Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Health-checks functions. |
| 3 | * |
| 4 | * Copyright 2000-2009,2020 Willy Tarreau <w@1wt.eu> |
| 5 | * Copyright 2007-2010 Krzysztof Piotr Oledzki <ole@ans.pl> |
| 6 | * Copyright 2013 Baptiste Assmann <bedis9@gmail.com> |
| 7 | * Copyright 2020 Gaetan Rivet <grive@u256.net> |
| 8 | * Copyright 2020 Christopher Faulet <cfaulet@haproxy.com> |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or |
| 11 | * modify it under the terms of the GNU General Public License |
| 12 | * as published by the Free Software Foundation; either version |
| 13 | * 2 of the License, or (at your option) any later version. |
| 14 | * |
| 15 | */ |
| 16 | |
| 17 | #include <sys/resource.h> |
| 18 | #include <sys/socket.h> |
| 19 | #include <sys/types.h> |
| 20 | #include <sys/wait.h> |
| 21 | #include <netinet/in.h> |
| 22 | #include <netinet/tcp.h> |
| 23 | #include <arpa/inet.h> |
| 24 | |
| 25 | #include <ctype.h> |
| 26 | #include <errno.h> |
| 27 | #include <fcntl.h> |
| 28 | #include <signal.h> |
| 29 | #include <stdarg.h> |
| 30 | #include <stdio.h> |
| 31 | #include <stdlib.h> |
| 32 | #include <string.h> |
| 33 | #include <time.h> |
| 34 | #include <unistd.h> |
| 35 | |
| 36 | #include <haproxy/action.h> |
| 37 | #include <haproxy/api.h> |
| 38 | #include <haproxy/cfgparse.h> |
| 39 | #include <haproxy/check.h> |
| 40 | #include <haproxy/chunk.h> |
| 41 | #include <haproxy/connection.h> |
Willy Tarreau | 36979d9 | 2020-06-05 17:27:29 +0200 | [diff] [blame] | 42 | #include <haproxy/errors.h> |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 43 | #include <haproxy/global.h> |
| 44 | #include <haproxy/h1.h> |
| 45 | #include <haproxy/http.h> |
| 46 | #include <haproxy/http_htx.h> |
| 47 | #include <haproxy/htx.h> |
| 48 | #include <haproxy/istbuf.h> |
| 49 | #include <haproxy/list.h> |
| 50 | #include <haproxy/log.h> |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 51 | #include <haproxy/protocol.h> |
| 52 | #include <haproxy/proxy-t.h> |
Willy Tarreau | b255105 | 2020-06-09 09:07:15 +0200 | [diff] [blame] | 53 | #include <haproxy/regex.h> |
| 54 | #include <haproxy/sample.h> |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 55 | #include <haproxy/server.h> |
| 56 | #include <haproxy/ssl_sock.h> |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 57 | #include <haproxy/task.h> |
| 58 | #include <haproxy/tcpcheck.h> |
Willy Tarreau | b255105 | 2020-06-09 09:07:15 +0200 | [diff] [blame] | 59 | #include <haproxy/time.h> |
| 60 | #include <haproxy/tools.h> |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 61 | #include <haproxy/vars.h> |
| 62 | |
| 63 | |
| 64 | /* Global tree to share all tcp-checks */ |
| 65 | struct eb_root shared_tcpchecks = EB_ROOT; |
| 66 | |
| 67 | |
| 68 | DECLARE_POOL(pool_head_tcpcheck_rule, "tcpcheck_rule", sizeof(struct tcpcheck_rule)); |
| 69 | |
| 70 | /**************************************************************************/ |
| 71 | /*************** Init/deinit tcp-check rules and ruleset ******************/ |
| 72 | /**************************************************************************/ |
| 73 | /* Releases memory allocated for a log-format string */ |
| 74 | static void free_tcpcheck_fmt(struct list *fmt) |
| 75 | { |
| 76 | struct logformat_node *lf, *lfb; |
| 77 | |
| 78 | list_for_each_entry_safe(lf, lfb, fmt, list) { |
| 79 | LIST_DEL(&lf->list); |
| 80 | release_sample_expr(lf->expr); |
| 81 | free(lf->arg); |
| 82 | free(lf); |
| 83 | } |
| 84 | } |
| 85 | |
| 86 | /* Releases memory allocated for an HTTP header used in a tcp-check send rule */ |
| 87 | void free_tcpcheck_http_hdr(struct tcpcheck_http_hdr *hdr) |
| 88 | { |
| 89 | if (!hdr) |
| 90 | return; |
| 91 | |
| 92 | free_tcpcheck_fmt(&hdr->value); |
| 93 | istfree(&hdr->name); |
| 94 | free(hdr); |
| 95 | } |
| 96 | |
| 97 | /* Releases memory allocated for an HTTP header list used in a tcp-check send |
| 98 | * rule |
| 99 | */ |
| 100 | static void free_tcpcheck_http_hdrs(struct list *hdrs) |
| 101 | { |
| 102 | struct tcpcheck_http_hdr *hdr, *bhdr; |
| 103 | |
| 104 | list_for_each_entry_safe(hdr, bhdr, hdrs, list) { |
| 105 | LIST_DEL(&hdr->list); |
| 106 | free_tcpcheck_http_hdr(hdr); |
| 107 | } |
| 108 | } |
| 109 | |
| 110 | /* Releases memory allocated for a tcp-check. If in_pool is set, it means the |
| 111 | * tcp-check was allocated using a memory pool (it is used to instantiate email |
| 112 | * alerts). |
| 113 | */ |
| 114 | void free_tcpcheck(struct tcpcheck_rule *rule, int in_pool) |
| 115 | { |
| 116 | if (!rule) |
| 117 | return; |
| 118 | |
| 119 | free(rule->comment); |
| 120 | switch (rule->action) { |
| 121 | case TCPCHK_ACT_SEND: |
| 122 | switch (rule->send.type) { |
| 123 | case TCPCHK_SEND_STRING: |
| 124 | case TCPCHK_SEND_BINARY: |
| 125 | istfree(&rule->send.data); |
| 126 | break; |
| 127 | case TCPCHK_SEND_STRING_LF: |
| 128 | case TCPCHK_SEND_BINARY_LF: |
| 129 | free_tcpcheck_fmt(&rule->send.fmt); |
| 130 | break; |
| 131 | case TCPCHK_SEND_HTTP: |
| 132 | free(rule->send.http.meth.str.area); |
| 133 | if (!(rule->send.http.flags & TCPCHK_SND_HTTP_FL_URI_FMT)) |
| 134 | istfree(&rule->send.http.uri); |
| 135 | else |
| 136 | free_tcpcheck_fmt(&rule->send.http.uri_fmt); |
| 137 | istfree(&rule->send.http.vsn); |
| 138 | free_tcpcheck_http_hdrs(&rule->send.http.hdrs); |
| 139 | if (!(rule->send.http.flags & TCPCHK_SND_HTTP_FL_BODY_FMT)) |
| 140 | istfree(&rule->send.http.body); |
| 141 | else |
| 142 | free_tcpcheck_fmt(&rule->send.http.body_fmt); |
| 143 | break; |
| 144 | case TCPCHK_SEND_UNDEF: |
| 145 | break; |
| 146 | } |
| 147 | break; |
| 148 | case TCPCHK_ACT_EXPECT: |
| 149 | free_tcpcheck_fmt(&rule->expect.onerror_fmt); |
| 150 | free_tcpcheck_fmt(&rule->expect.onsuccess_fmt); |
| 151 | release_sample_expr(rule->expect.status_expr); |
| 152 | switch (rule->expect.type) { |
| 153 | case TCPCHK_EXPECT_HTTP_STATUS: |
| 154 | free(rule->expect.codes.codes); |
| 155 | break; |
| 156 | case TCPCHK_EXPECT_STRING: |
| 157 | case TCPCHK_EXPECT_BINARY: |
| 158 | case TCPCHK_EXPECT_HTTP_BODY: |
| 159 | istfree(&rule->expect.data); |
| 160 | break; |
| 161 | case TCPCHK_EXPECT_STRING_REGEX: |
| 162 | case TCPCHK_EXPECT_BINARY_REGEX: |
| 163 | case TCPCHK_EXPECT_HTTP_STATUS_REGEX: |
| 164 | case TCPCHK_EXPECT_HTTP_BODY_REGEX: |
| 165 | regex_free(rule->expect.regex); |
| 166 | break; |
| 167 | case TCPCHK_EXPECT_STRING_LF: |
| 168 | case TCPCHK_EXPECT_BINARY_LF: |
| 169 | case TCPCHK_EXPECT_HTTP_BODY_LF: |
| 170 | free_tcpcheck_fmt(&rule->expect.fmt); |
| 171 | break; |
| 172 | case TCPCHK_EXPECT_HTTP_HEADER: |
| 173 | if (rule->expect.flags & TCPCHK_EXPT_FL_HTTP_HNAME_REG) |
| 174 | regex_free(rule->expect.hdr.name_re); |
| 175 | else if (rule->expect.flags & TCPCHK_EXPT_FL_HTTP_HNAME_FMT) |
| 176 | free_tcpcheck_fmt(&rule->expect.hdr.name_fmt); |
| 177 | else |
| 178 | istfree(&rule->expect.hdr.name); |
| 179 | |
| 180 | if (rule->expect.flags & TCPCHK_EXPT_FL_HTTP_HVAL_REG) |
| 181 | regex_free(rule->expect.hdr.value_re); |
| 182 | else if (rule->expect.flags & TCPCHK_EXPT_FL_HTTP_HVAL_FMT) |
| 183 | free_tcpcheck_fmt(&rule->expect.hdr.value_fmt); |
| 184 | else if (!(rule->expect.flags & TCPCHK_EXPT_FL_HTTP_HVAL_NONE)) |
| 185 | istfree(&rule->expect.hdr.value); |
| 186 | break; |
| 187 | case TCPCHK_EXPECT_CUSTOM: |
| 188 | case TCPCHK_EXPECT_UNDEF: |
| 189 | break; |
| 190 | } |
| 191 | break; |
| 192 | case TCPCHK_ACT_CONNECT: |
| 193 | free(rule->connect.sni); |
| 194 | free(rule->connect.alpn); |
| 195 | release_sample_expr(rule->connect.port_expr); |
| 196 | break; |
| 197 | case TCPCHK_ACT_COMMENT: |
| 198 | break; |
| 199 | case TCPCHK_ACT_ACTION_KW: |
| 200 | free(rule->action_kw.rule); |
| 201 | break; |
| 202 | } |
| 203 | |
| 204 | if (in_pool) |
| 205 | pool_free(pool_head_tcpcheck_rule, rule); |
| 206 | else |
| 207 | free(rule); |
| 208 | } |
| 209 | |
| 210 | /* Creates a tcp-check variable used in preset variables before executing a |
| 211 | * tcp-check ruleset. |
| 212 | */ |
| 213 | struct tcpcheck_var *create_tcpcheck_var(const struct ist name) |
| 214 | { |
| 215 | struct tcpcheck_var *var = NULL; |
| 216 | |
| 217 | var = calloc(1, sizeof(*var)); |
| 218 | if (var == NULL) |
| 219 | return NULL; |
| 220 | |
| 221 | var->name = istdup(name); |
| 222 | if (!isttest(var->name)) { |
| 223 | free(var); |
| 224 | return NULL; |
| 225 | } |
| 226 | |
| 227 | LIST_INIT(&var->list); |
| 228 | return var; |
| 229 | } |
| 230 | |
| 231 | /* Releases memory allocated for a preset tcp-check variable */ |
| 232 | void free_tcpcheck_var(struct tcpcheck_var *var) |
| 233 | { |
| 234 | if (!var) |
| 235 | return; |
| 236 | |
| 237 | istfree(&var->name); |
| 238 | if (var->data.type == SMP_T_STR || var->data.type == SMP_T_BIN) |
| 239 | free(var->data.u.str.area); |
| 240 | else if (var->data.type == SMP_T_METH && var->data.u.meth.meth == HTTP_METH_OTHER) |
| 241 | free(var->data.u.meth.str.area); |
| 242 | free(var); |
| 243 | } |
| 244 | |
| 245 | /* Releases a list of preset tcp-check variables */ |
| 246 | void free_tcpcheck_vars(struct list *vars) |
| 247 | { |
| 248 | struct tcpcheck_var *var, *back; |
| 249 | |
| 250 | list_for_each_entry_safe(var, back, vars, list) { |
| 251 | LIST_DEL(&var->list); |
| 252 | free_tcpcheck_var(var); |
| 253 | } |
| 254 | } |
| 255 | |
| 256 | /* Duplicate a list of preset tcp-check variables */ |
Willy Tarreau | 09f2e77 | 2021-02-12 08:42:30 +0100 | [diff] [blame] | 257 | int dup_tcpcheck_vars(struct list *dst, const struct list *src) |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 258 | { |
Willy Tarreau | 09f2e77 | 2021-02-12 08:42:30 +0100 | [diff] [blame] | 259 | const struct tcpcheck_var *var; |
| 260 | struct tcpcheck_var *new = NULL; |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 261 | |
| 262 | list_for_each_entry(var, src, list) { |
| 263 | new = create_tcpcheck_var(var->name); |
| 264 | if (!new) |
| 265 | goto error; |
| 266 | new->data.type = var->data.type; |
| 267 | if (var->data.type == SMP_T_STR || var->data.type == SMP_T_BIN) { |
| 268 | if (chunk_dup(&new->data.u.str, &var->data.u.str) == NULL) |
| 269 | goto error; |
| 270 | if (var->data.type == SMP_T_STR) |
| 271 | new->data.u.str.area[new->data.u.str.data] = 0; |
| 272 | } |
| 273 | else if (var->data.type == SMP_T_METH && var->data.u.meth.meth == HTTP_METH_OTHER) { |
| 274 | if (chunk_dup(&new->data.u.str, &var->data.u.str) == NULL) |
| 275 | goto error; |
| 276 | new->data.u.str.area[new->data.u.str.data] = 0; |
| 277 | new->data.u.meth.meth = var->data.u.meth.meth; |
| 278 | } |
| 279 | else |
| 280 | new->data.u = var->data.u; |
| 281 | LIST_ADDQ(dst, &new->list); |
| 282 | } |
| 283 | return 1; |
| 284 | |
| 285 | error: |
| 286 | free(new); |
| 287 | return 0; |
| 288 | } |
| 289 | |
| 290 | /* Looks for a shared tcp-check ruleset given its name. */ |
| 291 | struct tcpcheck_ruleset *find_tcpcheck_ruleset(const char *name) |
| 292 | { |
| 293 | struct tcpcheck_ruleset *rs; |
| 294 | struct ebpt_node *node; |
| 295 | |
| 296 | node = ebis_lookup_len(&shared_tcpchecks, name, strlen(name)); |
| 297 | if (node) { |
| 298 | rs = container_of(node, typeof(*rs), node); |
| 299 | return rs; |
| 300 | } |
| 301 | return NULL; |
| 302 | } |
| 303 | |
| 304 | /* Creates a new shared tcp-check ruleset and insert it in shared_tcpchecks |
| 305 | * tree. |
| 306 | */ |
| 307 | struct tcpcheck_ruleset *create_tcpcheck_ruleset(const char *name) |
| 308 | { |
| 309 | struct tcpcheck_ruleset *rs; |
| 310 | |
| 311 | rs = calloc(1, sizeof(*rs)); |
| 312 | if (rs == NULL) |
| 313 | return NULL; |
| 314 | |
| 315 | rs->node.key = strdup(name); |
| 316 | if (rs->node.key == NULL) { |
| 317 | free(rs); |
| 318 | return NULL; |
| 319 | } |
| 320 | |
| 321 | LIST_INIT(&rs->rules); |
| 322 | ebis_insert(&shared_tcpchecks, &rs->node); |
| 323 | return rs; |
| 324 | } |
| 325 | |
| 326 | /* Releases memory allocated by a tcp-check ruleset. */ |
| 327 | void free_tcpcheck_ruleset(struct tcpcheck_ruleset *rs) |
| 328 | { |
| 329 | struct tcpcheck_rule *r, *rb; |
| 330 | |
| 331 | if (!rs) |
| 332 | return; |
| 333 | |
| 334 | ebpt_delete(&rs->node); |
| 335 | free(rs->node.key); |
| 336 | list_for_each_entry_safe(r, rb, &rs->rules, list) { |
| 337 | LIST_DEL(&r->list); |
| 338 | free_tcpcheck(r, 0); |
| 339 | } |
| 340 | free(rs); |
| 341 | } |
| 342 | |
| 343 | |
| 344 | /**************************************************************************/ |
| 345 | /**************** Everything about tcp-checks execution *******************/ |
| 346 | /**************************************************************************/ |
| 347 | /* Returns the id of a step in a tcp-check ruleset */ |
| 348 | int tcpcheck_get_step_id(struct check *check, struct tcpcheck_rule *rule) |
| 349 | { |
| 350 | if (!rule) |
| 351 | rule = check->current_step; |
| 352 | |
| 353 | /* no last started step => first step */ |
| 354 | if (!rule) |
| 355 | return 1; |
| 356 | |
| 357 | /* last step is the first implicit connect */ |
| 358 | if (rule->index == 0 && |
| 359 | rule->action == TCPCHK_ACT_CONNECT && |
| 360 | (rule->connect.options & TCPCHK_OPT_IMPLICIT)) |
| 361 | return 0; |
| 362 | |
| 363 | return rule->index + 1; |
| 364 | } |
| 365 | |
| 366 | /* Returns the first non COMMENT/ACTION_KW tcp-check rule from list <list> or |
| 367 | * NULL if none was found. |
| 368 | */ |
| 369 | struct tcpcheck_rule *get_first_tcpcheck_rule(struct tcpcheck_rules *rules) |
| 370 | { |
| 371 | struct tcpcheck_rule *r; |
| 372 | |
| 373 | list_for_each_entry(r, rules->list, list) { |
| 374 | if (r->action != TCPCHK_ACT_COMMENT && r->action != TCPCHK_ACT_ACTION_KW) |
| 375 | return r; |
| 376 | } |
| 377 | return NULL; |
| 378 | } |
| 379 | |
| 380 | /* Returns the last non COMMENT/ACTION_KW tcp-check rule from list <list> or |
| 381 | * NULL if none was found. |
| 382 | */ |
| 383 | static struct tcpcheck_rule *get_last_tcpcheck_rule(struct tcpcheck_rules *rules) |
| 384 | { |
| 385 | struct tcpcheck_rule *r; |
| 386 | |
| 387 | list_for_each_entry_rev(r, rules->list, list) { |
| 388 | if (r->action != TCPCHK_ACT_COMMENT && r->action != TCPCHK_ACT_ACTION_KW) |
| 389 | return r; |
| 390 | } |
| 391 | return NULL; |
| 392 | } |
| 393 | |
| 394 | /* Returns the non COMMENT/ACTION_KW tcp-check rule from list <list> following |
| 395 | * <start> or NULL if non was found. If <start> is NULL, it relies on |
| 396 | * get_first_tcpcheck_rule(). |
| 397 | */ |
| 398 | static struct tcpcheck_rule *get_next_tcpcheck_rule(struct tcpcheck_rules *rules, struct tcpcheck_rule *start) |
| 399 | { |
| 400 | struct tcpcheck_rule *r; |
| 401 | |
| 402 | if (!start) |
| 403 | return get_first_tcpcheck_rule(rules); |
| 404 | |
| 405 | r = LIST_NEXT(&start->list, typeof(r), list); |
| 406 | list_for_each_entry_from(r, rules->list, list) { |
| 407 | if (r->action != TCPCHK_ACT_COMMENT && r->action != TCPCHK_ACT_ACTION_KW) |
| 408 | return r; |
| 409 | } |
| 410 | return NULL; |
| 411 | } |
| 412 | |
| 413 | |
| 414 | /* Creates info message when a tcp-check healthcheck fails on an expect rule */ |
| 415 | static void tcpcheck_expect_onerror_message(struct buffer *msg, struct check *check, struct tcpcheck_rule *rule, |
| 416 | int match, struct ist info) |
| 417 | { |
| 418 | struct sample *smp; |
| 419 | |
| 420 | /* Follows these step to produce the info message: |
| 421 | * 1. if info field is already provided, copy it |
| 422 | * 2. if the expect rule provides an onerror log-format string, |
| 423 | * use it to produce the message |
| 424 | * 3. the expect rule is part of a protocol check (http, redis, mysql...), do nothing |
| 425 | * 4. Otherwise produce the generic tcp-check info message |
| 426 | */ |
| 427 | if (istlen(info)) { |
| 428 | chunk_strncat(msg, istptr(info), istlen(info)); |
| 429 | goto comment; |
| 430 | } |
| 431 | else if (!LIST_ISEMPTY(&rule->expect.onerror_fmt)) { |
| 432 | msg->data += sess_build_logline(check->sess, NULL, b_tail(msg), b_room(msg), &rule->expect.onerror_fmt); |
| 433 | goto comment; |
| 434 | } |
| 435 | |
| 436 | if (check->type == PR_O2_TCPCHK_CHK && |
| 437 | (check->tcpcheck_rules->flags & TCPCHK_RULES_PROTO_CHK) != TCPCHK_RULES_TCP_CHK) |
| 438 | goto comment; |
| 439 | |
| 440 | chunk_strcat(msg, (match ? "TCPCHK matched unwanted content" : "TCPCHK did not match content")); |
| 441 | switch (rule->expect.type) { |
| 442 | case TCPCHK_EXPECT_HTTP_STATUS: |
| 443 | chunk_appendf(msg, "(status codes) at step %d", tcpcheck_get_step_id(check, rule)); |
| 444 | break; |
| 445 | case TCPCHK_EXPECT_STRING: |
| 446 | case TCPCHK_EXPECT_HTTP_BODY: |
| 447 | chunk_appendf(msg, " '%.*s' at step %d", (unsigned int)istlen(rule->expect.data), istptr(rule->expect.data), |
| 448 | tcpcheck_get_step_id(check, rule)); |
| 449 | break; |
| 450 | case TCPCHK_EXPECT_BINARY: |
| 451 | chunk_appendf(msg, " (binary) at step %d", tcpcheck_get_step_id(check, rule)); |
| 452 | break; |
| 453 | case TCPCHK_EXPECT_STRING_REGEX: |
| 454 | case TCPCHK_EXPECT_HTTP_STATUS_REGEX: |
| 455 | case TCPCHK_EXPECT_HTTP_BODY_REGEX: |
| 456 | chunk_appendf(msg, " (regex) at step %d", tcpcheck_get_step_id(check, rule)); |
| 457 | break; |
| 458 | case TCPCHK_EXPECT_BINARY_REGEX: |
| 459 | chunk_appendf(msg, " (binary regex) at step %d", tcpcheck_get_step_id(check, rule)); |
| 460 | break; |
| 461 | case TCPCHK_EXPECT_STRING_LF: |
| 462 | case TCPCHK_EXPECT_HTTP_BODY_LF: |
| 463 | chunk_appendf(msg, " (log-format string) at step %d", tcpcheck_get_step_id(check, rule)); |
| 464 | break; |
| 465 | case TCPCHK_EXPECT_BINARY_LF: |
| 466 | chunk_appendf(msg, " (log-format binary) at step %d", tcpcheck_get_step_id(check, rule)); |
| 467 | break; |
| 468 | case TCPCHK_EXPECT_CUSTOM: |
| 469 | chunk_appendf(msg, " (custom function) at step %d", tcpcheck_get_step_id(check, rule)); |
| 470 | break; |
| 471 | case TCPCHK_EXPECT_HTTP_HEADER: |
| 472 | chunk_appendf(msg, " (header pattern) at step %d", tcpcheck_get_step_id(check, rule)); |
| 473 | case TCPCHK_EXPECT_UNDEF: |
| 474 | /* Should never happen. */ |
| 475 | return; |
| 476 | } |
| 477 | |
| 478 | comment: |
| 479 | /* If the failing expect rule provides a comment, it is concatenated to |
| 480 | * the info message. |
| 481 | */ |
| 482 | if (rule->comment) { |
| 483 | chunk_strcat(msg, " comment: "); |
| 484 | chunk_strcat(msg, rule->comment); |
| 485 | } |
| 486 | |
| 487 | /* Finally, the check status code is set if the failing expect rule |
| 488 | * defines a status expression. |
| 489 | */ |
| 490 | if (rule->expect.status_expr) { |
| 491 | smp = sample_fetch_as_type(check->proxy, check->sess, NULL, SMP_OPT_DIR_RES | SMP_OPT_FINAL, |
| 492 | rule->expect.status_expr, SMP_T_STR); |
| 493 | |
| 494 | if (smp && sample_casts[smp->data.type][SMP_T_SINT] && |
| 495 | sample_casts[smp->data.type][SMP_T_SINT](smp)) |
| 496 | check->code = smp->data.u.sint; |
| 497 | } |
| 498 | |
| 499 | *(b_tail(msg)) = '\0'; |
| 500 | } |
| 501 | |
| 502 | /* Creates info message when a tcp-check healthcheck succeeds on an expect rule */ |
| 503 | static void tcpcheck_expect_onsuccess_message(struct buffer *msg, struct check *check, struct tcpcheck_rule *rule, |
| 504 | struct ist info) |
| 505 | { |
| 506 | struct sample *smp; |
| 507 | |
| 508 | /* Follows these step to produce the info message: |
| 509 | * 1. if info field is already provided, copy it |
| 510 | * 2. if the expect rule provides an onsucces log-format string, |
| 511 | * use it to produce the message |
| 512 | * 3. the expect rule is part of a protocol check (http, redis, mysql...), do nothing |
| 513 | * 4. Otherwise produce the generic tcp-check info message |
| 514 | */ |
| 515 | if (istlen(info)) |
| 516 | chunk_strncat(msg, istptr(info), istlen(info)); |
| 517 | if (!LIST_ISEMPTY(&rule->expect.onsuccess_fmt)) |
| 518 | msg->data += sess_build_logline(check->sess, NULL, b_tail(msg), b_room(msg), |
| 519 | &rule->expect.onsuccess_fmt); |
| 520 | else if (check->type == PR_O2_TCPCHK_CHK && |
| 521 | (check->tcpcheck_rules->flags & TCPCHK_RULES_PROTO_CHK) == TCPCHK_RULES_TCP_CHK) |
| 522 | chunk_strcat(msg, "(tcp-check)"); |
| 523 | |
| 524 | /* Finally, the check status code is set if the expect rule defines a |
| 525 | * status expression. |
| 526 | */ |
| 527 | if (rule->expect.status_expr) { |
| 528 | smp = sample_fetch_as_type(check->proxy, check->sess, NULL, SMP_OPT_DIR_RES | SMP_OPT_FINAL, |
| 529 | rule->expect.status_expr, SMP_T_STR); |
| 530 | |
| 531 | if (smp && sample_casts[smp->data.type][SMP_T_SINT] && |
| 532 | sample_casts[smp->data.type][SMP_T_SINT](smp)) |
| 533 | check->code = smp->data.u.sint; |
| 534 | } |
| 535 | |
| 536 | *(b_tail(msg)) = '\0'; |
| 537 | } |
| 538 | |
| 539 | /* Internal functions to parse and validate a MySQL packet in the context of an |
| 540 | * expect rule. It start to parse the input buffer at the offset <offset>. If |
| 541 | * <last_read> is set, no more data are expected. |
| 542 | */ |
| 543 | static enum tcpcheck_eval_ret tcpcheck_mysql_expect_packet(struct check *check, struct tcpcheck_rule *rule, |
| 544 | unsigned int offset, int last_read) |
| 545 | { |
| 546 | enum tcpcheck_eval_ret ret = TCPCHK_EVAL_CONTINUE; |
| 547 | enum healthcheck_status status; |
| 548 | struct buffer *msg = NULL; |
| 549 | struct ist desc = IST_NULL; |
| 550 | unsigned int err = 0, plen = 0; |
| 551 | |
| 552 | |
| 553 | /* 3 Bytes for the packet length and 1 byte for the sequence id */ |
| 554 | if (b_data(&check->bi) < offset+4) { |
| 555 | if (!last_read) |
| 556 | goto wait_more_data; |
| 557 | |
| 558 | /* invalid length or truncated response */ |
| 559 | status = HCHK_STATUS_L7RSP; |
| 560 | goto error; |
| 561 | } |
| 562 | |
| 563 | plen = ((unsigned char) *b_peek(&check->bi, offset)) + |
| 564 | (((unsigned char) *(b_peek(&check->bi, offset+1))) << 8) + |
| 565 | (((unsigned char) *(b_peek(&check->bi, offset+2))) << 16); |
| 566 | |
| 567 | if (b_data(&check->bi) < offset+plen+4) { |
| 568 | if (!last_read) |
| 569 | goto wait_more_data; |
| 570 | |
| 571 | /* invalid length or truncated response */ |
| 572 | status = HCHK_STATUS_L7RSP; |
| 573 | goto error; |
| 574 | } |
| 575 | |
| 576 | if (*b_peek(&check->bi, offset+4) == '\xff') { |
| 577 | /* MySQL Error packet always begin with field_count = 0xff */ |
| 578 | status = HCHK_STATUS_L7STS; |
| 579 | err = ((unsigned char) *b_peek(&check->bi, offset+5)) + |
| 580 | (((unsigned char) *(b_peek(&check->bi, offset+6))) << 8); |
| 581 | desc = ist2(b_peek(&check->bi, offset+7), b_data(&check->bi) - offset - 7); |
| 582 | goto error; |
| 583 | } |
| 584 | |
| 585 | if (get_next_tcpcheck_rule(check->tcpcheck_rules, rule) != NULL) { |
| 586 | /* Not the last rule, continue */ |
| 587 | goto out; |
| 588 | } |
| 589 | |
| 590 | /* We set the MySQL Version in description for information purpose |
| 591 | * FIXME : it can be cool to use MySQL Version for other purpose, |
| 592 | * like mark as down old MySQL server. |
| 593 | */ |
| 594 | status = ((rule->expect.ok_status != HCHK_STATUS_UNKNOWN) ? rule->expect.ok_status : HCHK_STATUS_L7OKD); |
| 595 | set_server_check_status(check, status, b_peek(&check->bi, 5)); |
| 596 | |
| 597 | out: |
| 598 | free_trash_chunk(msg); |
| 599 | return ret; |
| 600 | |
| 601 | error: |
| 602 | ret = TCPCHK_EVAL_STOP; |
| 603 | check->code = err; |
| 604 | msg = alloc_trash_chunk(); |
| 605 | if (msg) |
| 606 | tcpcheck_expect_onerror_message(msg, check, rule, 0, desc); |
| 607 | set_server_check_status(check, status, (msg ? b_head(msg) : NULL)); |
| 608 | goto out; |
| 609 | |
| 610 | wait_more_data: |
| 611 | ret = TCPCHK_EVAL_WAIT; |
| 612 | goto out; |
| 613 | } |
| 614 | |
| 615 | /* Custom tcp-check expect function to parse and validate the MySQL initial |
| 616 | * handshake packet. Returns TCPCHK_EVAL_WAIT to wait for more data, |
| 617 | * TCPCHK_EVAL_CONTINUE to evaluate the next rule or TCPCHK_EVAL_STOP if an |
| 618 | * error occurred. |
| 619 | */ |
| 620 | enum tcpcheck_eval_ret tcpcheck_mysql_expect_iniths(struct check *check, struct tcpcheck_rule *rule, int last_read) |
| 621 | { |
| 622 | return tcpcheck_mysql_expect_packet(check, rule, 0, last_read); |
| 623 | } |
| 624 | |
| 625 | /* Custom tcp-check expect function to parse and validate the MySQL OK packet |
| 626 | * following the initial handshake. Returns TCPCHK_EVAL_WAIT to wait for more |
| 627 | * data, TCPCHK_EVAL_CONTINUE to evaluate the next rule or TCPCHK_EVAL_STOP if |
| 628 | * an error occurred. |
| 629 | */ |
| 630 | enum tcpcheck_eval_ret tcpcheck_mysql_expect_ok(struct check *check, struct tcpcheck_rule *rule, int last_read) |
| 631 | { |
| 632 | unsigned int hslen = 0; |
| 633 | |
| 634 | hslen = 4 + ((unsigned char) *b_head(&check->bi)) + |
| 635 | (((unsigned char) *(b_peek(&check->bi, 1))) << 8) + |
| 636 | (((unsigned char) *(b_peek(&check->bi, 2))) << 16); |
| 637 | |
| 638 | return tcpcheck_mysql_expect_packet(check, rule, hslen, last_read); |
| 639 | } |
| 640 | |
| 641 | /* Custom tcp-check expect function to parse and validate the LDAP bind response |
| 642 | * package packet. Returns TCPCHK_EVAL_WAIT to wait for more data, |
| 643 | * TCPCHK_EVAL_CONTINUE to evaluate the next rule or TCPCHK_EVAL_STOP if an |
| 644 | * error occurred. |
| 645 | */ |
| 646 | enum tcpcheck_eval_ret tcpcheck_ldap_expect_bindrsp(struct check *check, struct tcpcheck_rule *rule, int last_read) |
| 647 | { |
| 648 | enum tcpcheck_eval_ret ret = TCPCHK_EVAL_CONTINUE; |
| 649 | enum healthcheck_status status; |
| 650 | struct buffer *msg = NULL; |
| 651 | struct ist desc = IST_NULL; |
| 652 | unsigned short msglen = 0; |
| 653 | |
| 654 | /* Check if the server speaks LDAP (ASN.1/BER) |
| 655 | * http://en.wikipedia.org/wiki/Basic_Encoding_Rules |
| 656 | * http://tools.ietf.org/html/rfc4511 |
| 657 | */ |
| 658 | /* size of LDAPMessage */ |
| 659 | msglen = (*(b_head(&check->bi) + 1) & 0x80) ? (*(b_head(&check->bi) + 1) & 0x7f) : 0; |
| 660 | |
| 661 | /* http://tools.ietf.org/html/rfc4511#section-4.2.2 |
| 662 | * messageID: 0x02 0x01 0x01: INTEGER 1 |
| 663 | * protocolOp: 0x61: bindResponse |
| 664 | */ |
| 665 | if ((msglen > 2) || (memcmp(b_head(&check->bi) + 2 + msglen, "\x02\x01\x01\x61", 4) != 0)) { |
| 666 | status = HCHK_STATUS_L7RSP; |
| 667 | desc = ist("Not LDAPv3 protocol"); |
| 668 | goto error; |
| 669 | } |
| 670 | |
| 671 | /* size of bindResponse */ |
| 672 | msglen += (*(b_head(&check->bi) + msglen + 6) & 0x80) ? (*(b_head(&check->bi) + msglen + 6) & 0x7f) : 0; |
| 673 | |
| 674 | /* http://tools.ietf.org/html/rfc4511#section-4.1.9 |
| 675 | * ldapResult: 0x0a 0x01: ENUMERATION |
| 676 | */ |
| 677 | if ((msglen > 4) || (memcmp(b_head(&check->bi) + 7 + msglen, "\x0a\x01", 2) != 0)) { |
| 678 | status = HCHK_STATUS_L7RSP; |
| 679 | desc = ist("Not LDAPv3 protocol"); |
| 680 | goto error; |
| 681 | } |
| 682 | |
| 683 | /* http://tools.ietf.org/html/rfc4511#section-4.1.9 |
| 684 | * resultCode |
| 685 | */ |
| 686 | check->code = *(b_head(&check->bi) + msglen + 9); |
| 687 | if (check->code) { |
| 688 | status = HCHK_STATUS_L7STS; |
| 689 | desc = ist("See RFC: http://tools.ietf.org/html/rfc4511#section-4.1.9"); |
| 690 | goto error; |
| 691 | } |
| 692 | |
| 693 | status = ((rule->expect.ok_status != HCHK_STATUS_UNKNOWN) ? rule->expect.ok_status : HCHK_STATUS_L7OKD); |
| 694 | set_server_check_status(check, status, "Success"); |
| 695 | |
| 696 | out: |
| 697 | free_trash_chunk(msg); |
| 698 | return ret; |
| 699 | |
| 700 | error: |
| 701 | ret = TCPCHK_EVAL_STOP; |
| 702 | msg = alloc_trash_chunk(); |
| 703 | if (msg) |
| 704 | tcpcheck_expect_onerror_message(msg, check, rule, 0, desc); |
| 705 | set_server_check_status(check, status, (msg ? b_head(msg) : NULL)); |
| 706 | goto out; |
| 707 | } |
| 708 | |
| 709 | /* Custom tcp-check expect function to parse and validate the SPOP hello agent |
| 710 | * frame. Returns TCPCHK_EVAL_WAIT to wait for more data, TCPCHK_EVAL_CONTINUE |
| 711 | * to evaluate the next rule or TCPCHK_EVAL_STOP if an error occurred. |
| 712 | */ |
| 713 | enum tcpcheck_eval_ret tcpcheck_spop_expect_agenthello(struct check *check, struct tcpcheck_rule *rule, int last_read) |
| 714 | { |
| 715 | enum tcpcheck_eval_ret ret = TCPCHK_EVAL_CONTINUE; |
| 716 | enum healthcheck_status status; |
| 717 | struct buffer *msg = NULL; |
| 718 | struct ist desc = IST_NULL; |
| 719 | unsigned int framesz; |
| 720 | |
| 721 | |
| 722 | memcpy(&framesz, b_head(&check->bi), 4); |
| 723 | framesz = ntohl(framesz); |
| 724 | |
| 725 | if (!last_read && b_data(&check->bi) < (4+framesz)) |
| 726 | goto wait_more_data; |
| 727 | |
| 728 | memset(b_orig(&trash), 0, b_size(&trash)); |
| 729 | if (spoe_handle_healthcheck_response(b_peek(&check->bi, 4), framesz, b_orig(&trash), HCHK_DESC_LEN) == -1) { |
| 730 | status = HCHK_STATUS_L7RSP; |
| 731 | desc = ist2(b_orig(&trash), strlen(b_orig(&trash))); |
| 732 | goto error; |
| 733 | } |
| 734 | |
| 735 | status = ((rule->expect.ok_status != HCHK_STATUS_UNKNOWN) ? rule->expect.ok_status : HCHK_STATUS_L7OKD); |
| 736 | set_server_check_status(check, status, "SPOA server is ok"); |
| 737 | |
| 738 | out: |
| 739 | free_trash_chunk(msg); |
| 740 | return ret; |
| 741 | |
| 742 | error: |
| 743 | ret = TCPCHK_EVAL_STOP; |
| 744 | msg = alloc_trash_chunk(); |
| 745 | if (msg) |
| 746 | tcpcheck_expect_onerror_message(msg, check, rule, 0, desc); |
| 747 | set_server_check_status(check, status, (msg ? b_head(msg) : NULL)); |
| 748 | goto out; |
| 749 | |
| 750 | wait_more_data: |
| 751 | ret = TCPCHK_EVAL_WAIT; |
| 752 | goto out; |
| 753 | } |
| 754 | |
| 755 | /* Custom tcp-check expect function to parse and validate the agent-check |
| 756 | * reply. Returns TCPCHK_EVAL_WAIT to wait for more data, TCPCHK_EVAL_CONTINUE |
| 757 | * to evaluate the next rule or TCPCHK_EVAL_STOP if an error occurred. |
| 758 | */ |
| 759 | enum tcpcheck_eval_ret tcpcheck_agent_expect_reply(struct check *check, struct tcpcheck_rule *rule, int last_read) |
| 760 | { |
| 761 | enum tcpcheck_eval_ret ret = TCPCHK_EVAL_STOP; |
| 762 | enum healthcheck_status status = HCHK_STATUS_CHECKED; |
| 763 | const char *hs = NULL; /* health status */ |
| 764 | const char *as = NULL; /* admin status */ |
| 765 | const char *ps = NULL; /* performance status */ |
| 766 | const char *cs = NULL; /* maxconn */ |
| 767 | const char *err = NULL; /* first error to report */ |
| 768 | const char *wrn = NULL; /* first warning to report */ |
| 769 | char *cmd, *p; |
| 770 | |
| 771 | /* We're getting an agent check response. The agent could |
| 772 | * have been disabled in the mean time with a long check |
| 773 | * still pending. It is important that we ignore the whole |
| 774 | * response. |
| 775 | */ |
| 776 | if (!(check->state & CHK_ST_ENABLED)) |
| 777 | goto out; |
| 778 | |
| 779 | /* The agent supports strings made of a single line ended by the |
| 780 | * first CR ('\r') or LF ('\n'). This line is composed of words |
| 781 | * delimited by spaces (' '), tabs ('\t'), or commas (','). The |
| 782 | * line may optionally contained a description of a state change |
| 783 | * after a sharp ('#'), which is only considered if a health state |
| 784 | * is announced. |
| 785 | * |
| 786 | * Words may be composed of : |
| 787 | * - a numeric weight suffixed by the percent character ('%'). |
| 788 | * - a health status among "up", "down", "stopped", and "fail". |
| 789 | * - an admin status among "ready", "drain", "maint". |
| 790 | * |
| 791 | * These words may appear in any order. If multiple words of the |
| 792 | * same category appear, the last one wins. |
| 793 | */ |
| 794 | |
| 795 | p = b_head(&check->bi); |
| 796 | while (*p && *p != '\n' && *p != '\r') |
| 797 | p++; |
| 798 | |
| 799 | if (!*p) { |
| 800 | if (!last_read) |
| 801 | goto wait_more_data; |
| 802 | |
| 803 | /* at least inform the admin that the agent is mis-behaving */ |
| 804 | set_server_check_status(check, check->status, "Ignoring incomplete line from agent"); |
| 805 | goto out; |
| 806 | } |
| 807 | |
| 808 | *p = 0; |
| 809 | cmd = b_head(&check->bi); |
| 810 | |
| 811 | while (*cmd) { |
| 812 | /* look for next word */ |
| 813 | if (*cmd == ' ' || *cmd == '\t' || *cmd == ',') { |
| 814 | cmd++; |
| 815 | continue; |
| 816 | } |
| 817 | |
| 818 | if (*cmd == '#') { |
| 819 | /* this is the beginning of a health status description, |
| 820 | * skip the sharp and blanks. |
| 821 | */ |
| 822 | cmd++; |
| 823 | while (*cmd == '\t' || *cmd == ' ') |
| 824 | cmd++; |
| 825 | break; |
| 826 | } |
| 827 | |
| 828 | /* find the end of the word so that we have a null-terminated |
| 829 | * word between <cmd> and <p>. |
| 830 | */ |
| 831 | p = cmd + 1; |
| 832 | while (*p && *p != '\t' && *p != ' ' && *p != '\n' && *p != ',') |
| 833 | p++; |
| 834 | if (*p) |
| 835 | *p++ = 0; |
| 836 | |
| 837 | /* first, health statuses */ |
| 838 | if (strcasecmp(cmd, "up") == 0) { |
Christopher Faulet | 24ec943 | 2021-03-12 09:06:07 +0100 | [diff] [blame] | 839 | check->health = check->rise + check->fall - 1; |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 840 | status = HCHK_STATUS_L7OKD; |
| 841 | hs = cmd; |
| 842 | } |
| 843 | else if (strcasecmp(cmd, "down") == 0) { |
Christopher Faulet | 24ec943 | 2021-03-12 09:06:07 +0100 | [diff] [blame] | 844 | check->health = 0; |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 845 | status = HCHK_STATUS_L7STS; |
| 846 | hs = cmd; |
| 847 | } |
| 848 | else if (strcasecmp(cmd, "stopped") == 0) { |
Christopher Faulet | 24ec943 | 2021-03-12 09:06:07 +0100 | [diff] [blame] | 849 | check->health = 0; |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 850 | status = HCHK_STATUS_L7STS; |
| 851 | hs = cmd; |
| 852 | } |
| 853 | else if (strcasecmp(cmd, "fail") == 0) { |
Christopher Faulet | 24ec943 | 2021-03-12 09:06:07 +0100 | [diff] [blame] | 854 | check->health = 0; |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 855 | status = HCHK_STATUS_L7STS; |
| 856 | hs = cmd; |
| 857 | } |
| 858 | /* admin statuses */ |
| 859 | else if (strcasecmp(cmd, "ready") == 0) { |
| 860 | as = cmd; |
| 861 | } |
| 862 | else if (strcasecmp(cmd, "drain") == 0) { |
| 863 | as = cmd; |
| 864 | } |
| 865 | else if (strcasecmp(cmd, "maint") == 0) { |
| 866 | as = cmd; |
| 867 | } |
| 868 | /* try to parse a weight here and keep the last one */ |
| 869 | else if (isdigit((unsigned char)*cmd) && strchr(cmd, '%') != NULL) { |
| 870 | ps = cmd; |
| 871 | } |
| 872 | /* try to parse a maxconn here */ |
| 873 | else if (strncasecmp(cmd, "maxconn:", strlen("maxconn:")) == 0) { |
| 874 | cs = cmd; |
| 875 | } |
| 876 | else { |
| 877 | /* keep a copy of the first error */ |
| 878 | if (!err) |
| 879 | err = cmd; |
| 880 | } |
| 881 | /* skip to next word */ |
| 882 | cmd = p; |
| 883 | } |
| 884 | /* here, cmd points either to \0 or to the beginning of a |
| 885 | * description. Skip possible leading spaces. |
| 886 | */ |
| 887 | while (*cmd == ' ' || *cmd == '\n') |
| 888 | cmd++; |
| 889 | |
| 890 | /* First, update the admin status so that we avoid sending other |
| 891 | * possibly useless warnings and can also update the health if |
| 892 | * present after going back up. |
| 893 | */ |
| 894 | if (as) { |
| 895 | if (strcasecmp(as, "drain") == 0) |
| 896 | srv_adm_set_drain(check->server); |
| 897 | else if (strcasecmp(as, "maint") == 0) |
| 898 | srv_adm_set_maint(check->server); |
| 899 | else |
| 900 | srv_adm_set_ready(check->server); |
| 901 | } |
| 902 | |
| 903 | /* now change weights */ |
| 904 | if (ps) { |
| 905 | const char *msg; |
| 906 | |
| 907 | msg = server_parse_weight_change_request(check->server, ps); |
| 908 | if (!wrn || !*wrn) |
| 909 | wrn = msg; |
| 910 | } |
| 911 | |
| 912 | if (cs) { |
| 913 | const char *msg; |
| 914 | |
| 915 | cs += strlen("maxconn:"); |
| 916 | |
| 917 | msg = server_parse_maxconn_change_request(check->server, cs); |
| 918 | if (!wrn || !*wrn) |
| 919 | wrn = msg; |
| 920 | } |
| 921 | |
| 922 | /* and finally health status */ |
| 923 | if (hs) { |
| 924 | /* We'll report some of the warnings and errors we have |
| 925 | * here. Down reports are critical, we leave them untouched. |
| 926 | * Lack of report, or report of 'UP' leaves the room for |
| 927 | * ERR first, then WARN. |
| 928 | */ |
| 929 | const char *msg = cmd; |
| 930 | struct buffer *t; |
| 931 | |
| 932 | if (!*msg || status == HCHK_STATUS_L7OKD) { |
| 933 | if (err && *err) |
| 934 | msg = err; |
| 935 | else if (wrn && *wrn) |
| 936 | msg = wrn; |
| 937 | } |
| 938 | |
| 939 | t = get_trash_chunk(); |
| 940 | chunk_printf(t, "via agent : %s%s%s%s", |
| 941 | hs, *msg ? " (" : "", |
| 942 | msg, *msg ? ")" : ""); |
| 943 | set_server_check_status(check, status, t->area); |
| 944 | } |
| 945 | else if (err && *err) { |
| 946 | /* No status change but we'd like to report something odd. |
| 947 | * Just report the current state and copy the message. |
| 948 | */ |
| 949 | chunk_printf(&trash, "agent reports an error : %s", err); |
| 950 | set_server_check_status(check, status/*check->status*/, trash.area); |
| 951 | } |
| 952 | else if (wrn && *wrn) { |
| 953 | /* No status change but we'd like to report something odd. |
| 954 | * Just report the current state and copy the message. |
| 955 | */ |
| 956 | chunk_printf(&trash, "agent warns : %s", wrn); |
| 957 | set_server_check_status(check, status/*check->status*/, trash.area); |
| 958 | } |
| 959 | else |
| 960 | set_server_check_status(check, status, NULL); |
| 961 | |
| 962 | out: |
| 963 | return ret; |
| 964 | |
| 965 | wait_more_data: |
| 966 | ret = TCPCHK_EVAL_WAIT; |
| 967 | goto out; |
| 968 | } |
| 969 | |
| 970 | /* Evaluates a TCPCHK_ACT_CONNECT rule. Returns TCPCHK_EVAL_WAIT to wait the |
| 971 | * connection establishment, TCPCHK_EVAL_CONTINUE to evaluate the next rule or |
| 972 | * TCPCHK_EVAL_STOP if an error occurred. |
| 973 | */ |
| 974 | enum tcpcheck_eval_ret tcpcheck_eval_connect(struct check *check, struct tcpcheck_rule *rule) |
| 975 | { |
| 976 | enum tcpcheck_eval_ret ret = TCPCHK_EVAL_CONTINUE; |
| 977 | struct tcpcheck_connect *connect = &rule->connect; |
| 978 | struct proxy *proxy = check->proxy; |
| 979 | struct server *s = check->server; |
| 980 | struct task *t = check->task; |
Christopher Faulet | b1bb069 | 2020-11-25 16:47:30 +0100 | [diff] [blame] | 981 | struct conn_stream *cs = check->cs; |
| 982 | struct connection *conn = cs_conn(cs); |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 983 | struct protocol *proto; |
| 984 | struct xprt_ops *xprt; |
| 985 | struct tcpcheck_rule *next; |
| 986 | int status, port; |
| 987 | |
Christopher Faulet | b1bb069 | 2020-11-25 16:47:30 +0100 | [diff] [blame] | 988 | next = get_next_tcpcheck_rule(check->tcpcheck_rules, rule); |
| 989 | |
| 990 | /* current connection already created, check if it is established or not */ |
| 991 | if (conn) { |
| 992 | if (conn->flags & CO_FL_WAIT_XPRT) { |
| 993 | /* We are still waiting for the connection establishment */ |
| 994 | if (next && next->action == TCPCHK_ACT_SEND) { |
| 995 | if (!(check->wait_list.events & SUB_RETRY_SEND)) |
| 996 | conn->mux->subscribe(cs, SUB_RETRY_SEND, &check->wait_list); |
| 997 | ret = TCPCHK_EVAL_WAIT; |
| 998 | } |
| 999 | else |
| 1000 | ret = tcpcheck_eval_recv(check, rule); |
| 1001 | } |
| 1002 | goto out; |
| 1003 | } |
| 1004 | |
| 1005 | /* Note: here check->cs = cs = conn = NULL */ |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 1006 | |
Christopher Faulet | b381a50 | 2020-11-25 13:47:00 +0100 | [diff] [blame] | 1007 | /* Always release input and output buffer when a new connect is evaluated */ |
| 1008 | check_release_buf(check, &check->bi); |
| 1009 | check_release_buf(check, &check->bo); |
| 1010 | |
Christopher Faulet | b1bb069 | 2020-11-25 16:47:30 +0100 | [diff] [blame] | 1011 | /* No connection, prepare a new one */ |
Christopher Faulet | 236c93b | 2020-07-02 09:19:54 +0200 | [diff] [blame] | 1012 | cs = cs_new(NULL, (s ? &s->obj_type : &proxy->obj_type)); |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 1013 | if (!cs) { |
| 1014 | chunk_printf(&trash, "TCPCHK error allocating connection at step %d", |
| 1015 | tcpcheck_get_step_id(check, rule)); |
| 1016 | if (rule->comment) |
| 1017 | chunk_appendf(&trash, " comment: '%s'", rule->comment); |
| 1018 | set_server_check_status(check, HCHK_STATUS_SOCKERR, trash.area); |
| 1019 | ret = TCPCHK_EVAL_STOP; |
| 1020 | goto out; |
| 1021 | } |
| 1022 | |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 1023 | tasklet_set_tid(check->wait_list.tasklet, tid); |
| 1024 | |
| 1025 | check->cs = cs; |
| 1026 | conn = cs->conn; |
| 1027 | conn_set_owner(conn, check->sess, NULL); |
| 1028 | |
| 1029 | /* Maybe there were an older connection we were waiting on */ |
| 1030 | check->wait_list.events = 0; |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 1031 | |
| 1032 | /* no client address */ |
Willy Tarreau | 9b7587a | 2020-10-15 07:32:10 +0200 | [diff] [blame] | 1033 | if (!sockaddr_alloc(&conn->dst, NULL, 0)) { |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 1034 | status = SF_ERR_RESOURCE; |
| 1035 | goto fail_check; |
| 1036 | } |
| 1037 | |
| 1038 | /* connect to the connect rule addr if specified, otherwise the check |
| 1039 | * addr if specified on the server. otherwise, use the server addr (it |
| 1040 | * MUST exist at this step). |
| 1041 | */ |
| 1042 | *conn->dst = (is_addr(&connect->addr) |
| 1043 | ? connect->addr |
| 1044 | : (is_addr(&check->addr) ? check->addr : s->addr)); |
| 1045 | proto = protocol_by_family(conn->dst->ss_family); |
| 1046 | |
| 1047 | port = 0; |
Christopher Faulet | b1d19ea | 2021-02-12 16:09:13 +0100 | [diff] [blame] | 1048 | if (connect->port) |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 1049 | port = connect->port; |
| 1050 | if (!port && connect->port_expr) { |
| 1051 | struct sample *smp; |
| 1052 | |
| 1053 | smp = sample_fetch_as_type(check->proxy, check->sess, NULL, |
| 1054 | SMP_OPT_DIR_REQ | SMP_OPT_FINAL, |
| 1055 | connect->port_expr, SMP_T_SINT); |
| 1056 | if (smp) |
| 1057 | port = smp->data.u.sint; |
| 1058 | } |
| 1059 | if (!port && is_inet_addr(&connect->addr)) |
| 1060 | port = get_host_port(&connect->addr); |
| 1061 | if (!port && check->port) |
| 1062 | port = check->port; |
| 1063 | if (!port && is_inet_addr(&check->addr)) |
| 1064 | port = get_host_port(&check->addr); |
| 1065 | if (!port) { |
| 1066 | /* The server MUST exist here */ |
| 1067 | port = s->svc_port; |
| 1068 | } |
| 1069 | set_host_port(conn->dst, port); |
| 1070 | |
| 1071 | xprt = ((connect->options & TCPCHK_OPT_SSL) |
| 1072 | ? xprt_get(XPRT_SSL) |
| 1073 | : ((connect->options & TCPCHK_OPT_DEFAULT_CONNECT) ? check->xprt : xprt_get(XPRT_RAW))); |
| 1074 | |
Olivier Houchard | 1b3c931 | 2021-03-05 23:37:48 +0100 | [diff] [blame] | 1075 | if (conn_prepare(conn, proto, xprt) < 0) { |
| 1076 | status = SF_ERR_RESOURCE; |
| 1077 | goto fail_check; |
| 1078 | } |
| 1079 | |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 1080 | cs_attach(cs, check, &check_conn_cb); |
| 1081 | |
Christopher Faulet | f717727 | 2020-10-02 13:41:55 +0200 | [diff] [blame] | 1082 | if ((connect->options & TCPCHK_OPT_SOCKS4) && s && (s->flags & SRV_F_SOCKS4_PROXY)) { |
| 1083 | conn->send_proxy_ofs = 1; |
| 1084 | conn->flags |= CO_FL_SOCKS4; |
| 1085 | } |
| 1086 | else if ((connect->options & TCPCHK_OPT_DEFAULT_CONNECT) && s && s->check.via_socks4 && (s->flags & SRV_F_SOCKS4_PROXY)) { |
| 1087 | conn->send_proxy_ofs = 1; |
| 1088 | conn->flags |= CO_FL_SOCKS4; |
| 1089 | } |
| 1090 | |
| 1091 | if (connect->options & TCPCHK_OPT_SEND_PROXY) { |
| 1092 | conn->send_proxy_ofs = 1; |
| 1093 | conn->flags |= CO_FL_SEND_PROXY; |
| 1094 | } |
| 1095 | else if ((connect->options & TCPCHK_OPT_DEFAULT_CONNECT) && s && s->check.send_proxy && !(check->state & CHK_ST_AGENT)) { |
| 1096 | conn->send_proxy_ofs = 1; |
| 1097 | conn->flags |= CO_FL_SEND_PROXY; |
| 1098 | } |
| 1099 | |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 1100 | status = SF_ERR_INTERNAL; |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 1101 | if (proto && proto->connect) { |
| 1102 | int flags = 0; |
| 1103 | |
| 1104 | if (check->tcpcheck_rules->flags & TCPCHK_RULES_PROTO_CHK) |
| 1105 | flags |= CONNECT_HAS_DATA; |
| 1106 | if (!next || next->action != TCPCHK_ACT_EXPECT) |
| 1107 | flags |= CONNECT_DELACK_ALWAYS; |
| 1108 | status = proto->connect(conn, flags); |
| 1109 | } |
| 1110 | |
| 1111 | if (status != SF_ERR_NONE) |
| 1112 | goto fail_check; |
| 1113 | |
Christopher Faulet | 21ddc74 | 2020-07-01 15:26:14 +0200 | [diff] [blame] | 1114 | conn_set_private(conn); |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 1115 | conn->ctx = cs; |
| 1116 | |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 1117 | #ifdef USE_OPENSSL |
| 1118 | if (connect->sni) |
| 1119 | ssl_sock_set_servername(conn, connect->sni); |
| 1120 | else if ((connect->options & TCPCHK_OPT_DEFAULT_CONNECT) && s && s->check.sni) |
| 1121 | ssl_sock_set_servername(conn, s->check.sni); |
| 1122 | |
| 1123 | if (connect->alpn) |
| 1124 | ssl_sock_set_alpn(conn, (unsigned char *)connect->alpn, connect->alpn_len); |
| 1125 | else if ((connect->options & TCPCHK_OPT_DEFAULT_CONNECT) && s && s->check.alpn_str) |
| 1126 | ssl_sock_set_alpn(conn, (unsigned char *)s->check.alpn_str, s->check.alpn_len); |
| 1127 | #endif |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 1128 | |
| 1129 | if (conn_ctrl_ready(conn) && (connect->options & TCPCHK_OPT_LINGER)) { |
| 1130 | /* Some servers don't like reset on close */ |
| 1131 | fdtab[cs->conn->handle.fd].linger_risk = 0; |
| 1132 | } |
| 1133 | |
| 1134 | if (conn_ctrl_ready(conn) && (conn->flags & (CO_FL_SEND_PROXY | CO_FL_SOCKS4))) { |
| 1135 | if (xprt_add_hs(conn) < 0) |
| 1136 | status = SF_ERR_RESOURCE; |
| 1137 | } |
| 1138 | |
Olivier Houchard | 1b3c931 | 2021-03-05 23:37:48 +0100 | [diff] [blame] | 1139 | if (conn_xprt_start(conn) < 0) { |
| 1140 | status = SF_ERR_RESOURCE; |
| 1141 | goto fail_check; |
| 1142 | } |
| 1143 | |
Willy Tarreau | 8e979fa | 2020-07-31 08:49:31 +0200 | [diff] [blame] | 1144 | /* The mux may be initialized now if there isn't server attached to the |
| 1145 | * check (email alerts) or if there is a mux proto specified or if there |
| 1146 | * is no alpn. |
| 1147 | */ |
| 1148 | if (!s || ((connect->options & TCPCHK_OPT_DEFAULT_CONNECT) && check->mux_proto) || |
| 1149 | connect->mux_proto || (!connect->alpn && !check->alpn_str)) { |
| 1150 | const struct mux_ops *mux_ops; |
| 1151 | |
| 1152 | if (connect->mux_proto) |
| 1153 | mux_ops = connect->mux_proto->mux; |
| 1154 | else if ((connect->options & TCPCHK_OPT_DEFAULT_CONNECT) && check->mux_proto) |
| 1155 | mux_ops = check->mux_proto->mux; |
| 1156 | else { |
| 1157 | int mode = ((check->tcpcheck_rules->flags & TCPCHK_RULES_PROTO_CHK) == TCPCHK_RULES_HTTP_CHK |
| 1158 | ? PROTO_MODE_HTTP |
| 1159 | : PROTO_MODE_TCP); |
| 1160 | |
| 1161 | mux_ops = conn_get_best_mux(conn, IST_NULL, PROTO_SIDE_BE, mode); |
| 1162 | } |
| 1163 | if (mux_ops && conn_install_mux(conn, mux_ops, cs, proxy, check->sess) < 0) { |
| 1164 | status = SF_ERR_INTERNAL; |
| 1165 | goto fail_check; |
| 1166 | } |
| 1167 | } |
| 1168 | |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 1169 | fail_check: |
| 1170 | /* It can return one of : |
| 1171 | * - SF_ERR_NONE if everything's OK |
| 1172 | * - SF_ERR_SRVTO if there are no more servers |
| 1173 | * - SF_ERR_SRVCL if the connection was refused by the server |
| 1174 | * - SF_ERR_PRXCOND if the connection has been limited by the proxy (maxconn) |
| 1175 | * - SF_ERR_RESOURCE if a system resource is lacking (eg: fd limits, ports, ...) |
| 1176 | * - SF_ERR_INTERNAL for any other purely internal errors |
| 1177 | * Additionally, in the case of SF_ERR_RESOURCE, an emergency log will be emitted. |
| 1178 | * Note that we try to prevent the network stack from sending the ACK during the |
| 1179 | * connect() when a pure TCP check is used (without PROXY protocol). |
| 1180 | */ |
| 1181 | switch (status) { |
| 1182 | case SF_ERR_NONE: |
| 1183 | /* we allow up to min(inter, timeout.connect) for a connection |
| 1184 | * to establish but only when timeout.check is set as it may be |
| 1185 | * to short for a full check otherwise |
| 1186 | */ |
| 1187 | t->expire = tick_add(now_ms, MS_TO_TICKS(check->inter)); |
| 1188 | |
| 1189 | if (proxy->timeout.check && proxy->timeout.connect) { |
| 1190 | int t_con = tick_add(now_ms, proxy->timeout.connect); |
| 1191 | t->expire = tick_first(t->expire, t_con); |
| 1192 | } |
| 1193 | break; |
| 1194 | case SF_ERR_SRVTO: /* ETIMEDOUT */ |
| 1195 | case SF_ERR_SRVCL: /* ECONNREFUSED, ENETUNREACH, ... */ |
| 1196 | case SF_ERR_PRXCOND: |
| 1197 | case SF_ERR_RESOURCE: |
| 1198 | case SF_ERR_INTERNAL: |
| 1199 | chk_report_conn_err(check, errno, 0); |
| 1200 | ret = TCPCHK_EVAL_STOP; |
| 1201 | goto out; |
| 1202 | } |
| 1203 | |
| 1204 | /* don't do anything until the connection is established */ |
| 1205 | if (conn->flags & CO_FL_WAIT_XPRT) { |
| 1206 | if (conn->mux) { |
| 1207 | if (next && next->action == TCPCHK_ACT_SEND) |
| 1208 | conn->mux->subscribe(cs, SUB_RETRY_SEND, &check->wait_list); |
| 1209 | else |
| 1210 | conn->mux->subscribe(cs, SUB_RETRY_RECV, &check->wait_list); |
| 1211 | } |
| 1212 | ret = TCPCHK_EVAL_WAIT; |
| 1213 | goto out; |
| 1214 | } |
| 1215 | |
| 1216 | out: |
| 1217 | if (conn && check->result == CHK_RES_FAILED) |
| 1218 | conn->flags |= CO_FL_ERROR; |
Christopher Faulet | c878f56 | 2020-12-09 19:46:38 +0100 | [diff] [blame] | 1219 | |
| 1220 | if (ret == TCPCHK_EVAL_CONTINUE && check->proxy->timeout.check) |
| 1221 | check->task->expire = tick_add_ifset(now_ms, check->proxy->timeout.check); |
| 1222 | |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 1223 | return ret; |
| 1224 | } |
| 1225 | |
| 1226 | /* Evaluates a TCPCHK_ACT_SEND rule. Returns TCPCHK_EVAL_WAIT if outgoing data |
| 1227 | * were not fully sent, TCPCHK_EVAL_CONTINUE to evaluate the next rule or |
| 1228 | * TCPCHK_EVAL_STOP if an error occurred. |
| 1229 | */ |
| 1230 | enum tcpcheck_eval_ret tcpcheck_eval_send(struct check *check, struct tcpcheck_rule *rule) |
| 1231 | { |
| 1232 | enum tcpcheck_eval_ret ret = TCPCHK_EVAL_CONTINUE; |
| 1233 | struct tcpcheck_send *send = &rule->send; |
| 1234 | struct conn_stream *cs = check->cs; |
| 1235 | struct connection *conn = cs_conn(cs); |
| 1236 | struct buffer *tmp = NULL; |
| 1237 | struct htx *htx = NULL; |
Amaury Denoyelle | 6d975f0 | 2020-12-22 14:08:52 +0100 | [diff] [blame] | 1238 | int connection_hdr = 0; |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 1239 | |
Christopher Faulet | b381a50 | 2020-11-25 13:47:00 +0100 | [diff] [blame] | 1240 | if (check->state & CHK_ST_OUT_ALLOC) { |
| 1241 | ret = TCPCHK_EVAL_WAIT; |
| 1242 | goto out; |
| 1243 | } |
| 1244 | |
| 1245 | if (!check_get_buf(check, &check->bo)) { |
| 1246 | check->state |= CHK_ST_OUT_ALLOC; |
| 1247 | ret = TCPCHK_EVAL_WAIT; |
| 1248 | goto out; |
| 1249 | } |
| 1250 | |
Christopher Faulet | 39066c2 | 2020-11-25 13:34:51 +0100 | [diff] [blame] | 1251 | /* Data already pending in the output buffer, send them now */ |
| 1252 | if (b_data(&check->bo)) |
| 1253 | goto do_send; |
| 1254 | |
Christopher Faulet | b381a50 | 2020-11-25 13:47:00 +0100 | [diff] [blame] | 1255 | /* Always release input buffer when a new send is evaluated */ |
| 1256 | check_release_buf(check, &check->bi); |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 1257 | |
| 1258 | switch (send->type) { |
| 1259 | case TCPCHK_SEND_STRING: |
| 1260 | case TCPCHK_SEND_BINARY: |
| 1261 | if (istlen(send->data) >= b_size(&check->bo)) { |
| 1262 | chunk_printf(&trash, "tcp-check send : string too large (%u) for buffer size (%u) at step %d", |
| 1263 | (unsigned int)istlen(send->data), (unsigned int)b_size(&check->bo), |
| 1264 | tcpcheck_get_step_id(check, rule)); |
| 1265 | set_server_check_status(check, HCHK_STATUS_L7RSP, trash.area); |
| 1266 | ret = TCPCHK_EVAL_STOP; |
| 1267 | goto out; |
| 1268 | } |
| 1269 | b_putist(&check->bo, send->data); |
| 1270 | break; |
| 1271 | case TCPCHK_SEND_STRING_LF: |
| 1272 | check->bo.data = sess_build_logline(check->sess, NULL, b_orig(&check->bo), b_size(&check->bo), &rule->send.fmt); |
| 1273 | if (!b_data(&check->bo)) |
| 1274 | goto out; |
| 1275 | break; |
| 1276 | case TCPCHK_SEND_BINARY_LF: { |
| 1277 | int len = b_size(&check->bo); |
| 1278 | |
| 1279 | tmp = alloc_trash_chunk(); |
| 1280 | if (!tmp) |
| 1281 | goto error_lf; |
| 1282 | tmp->data = sess_build_logline(check->sess, NULL, b_orig(tmp), b_size(tmp), &rule->send.fmt); |
| 1283 | if (!b_data(tmp)) |
| 1284 | goto out; |
| 1285 | tmp->area[tmp->data] = '\0'; |
| 1286 | if (parse_binary(b_orig(tmp), &check->bo.area, &len, NULL) == 0) |
| 1287 | goto error_lf; |
| 1288 | check->bo.data = len; |
| 1289 | break; |
| 1290 | } |
| 1291 | case TCPCHK_SEND_HTTP: { |
| 1292 | struct htx_sl *sl; |
| 1293 | struct ist meth, uri, vsn, clen, body; |
| 1294 | unsigned int slflags = 0; |
| 1295 | |
| 1296 | tmp = alloc_trash_chunk(); |
| 1297 | if (!tmp) |
| 1298 | goto error_htx; |
| 1299 | |
| 1300 | meth = ((send->http.meth.meth == HTTP_METH_OTHER) |
| 1301 | ? ist2(send->http.meth.str.area, send->http.meth.str.data) |
| 1302 | : http_known_methods[send->http.meth.meth]); |
| 1303 | if (send->http.flags & TCPCHK_SND_HTTP_FL_URI_FMT) { |
| 1304 | tmp->data = sess_build_logline(check->sess, NULL, b_orig(tmp), b_size(tmp), &send->http.uri_fmt); |
| 1305 | uri = (b_data(tmp) ? ist2(b_orig(tmp), b_data(tmp)) : ist("/")); |
| 1306 | } |
| 1307 | else |
| 1308 | uri = (isttest(send->http.uri) ? send->http.uri : ist("/")); |
| 1309 | vsn = (isttest(send->http.vsn) ? send->http.vsn : ist("HTTP/1.0")); |
| 1310 | |
| 1311 | if ((istlen(vsn) == 6 && *(vsn.ptr+5) == '2') || |
| 1312 | (istlen(vsn) == 8 && (*(vsn.ptr+5) > '1' || (*(vsn.ptr+5) == '1' && *(vsn.ptr+7) >= '1')))) |
| 1313 | slflags |= HTX_SL_F_VER_11; |
| 1314 | slflags |= (HTX_SL_F_XFER_LEN|HTX_SL_F_CLEN); |
| 1315 | if (!isttest(send->http.body)) |
| 1316 | slflags |= HTX_SL_F_BODYLESS; |
| 1317 | |
| 1318 | htx = htx_from_buf(&check->bo); |
| 1319 | sl = htx_add_stline(htx, HTX_BLK_REQ_SL, slflags, meth, uri, vsn); |
| 1320 | if (!sl) |
| 1321 | goto error_htx; |
| 1322 | sl->info.req.meth = send->http.meth.meth; |
| 1323 | if (!http_update_host(htx, sl, uri)) |
| 1324 | goto error_htx; |
| 1325 | |
| 1326 | if (!LIST_ISEMPTY(&send->http.hdrs)) { |
| 1327 | struct tcpcheck_http_hdr *hdr; |
| 1328 | struct ist hdr_value; |
| 1329 | |
| 1330 | list_for_each_entry(hdr, &send->http.hdrs, list) { |
| 1331 | chunk_reset(tmp); |
| 1332 | tmp->data = sess_build_logline(check->sess, NULL, b_orig(tmp), b_size(tmp), &hdr->value); |
| 1333 | if (!b_data(tmp)) |
| 1334 | continue; |
| 1335 | hdr_value = ist2(b_orig(tmp), b_data(tmp)); |
| 1336 | if (!htx_add_header(htx, hdr->name, hdr_value)) |
| 1337 | goto error_htx; |
| 1338 | if ((sl->flags & HTX_SL_F_HAS_AUTHORITY) && isteqi(hdr->name, ist("host"))) { |
| 1339 | if (!http_update_authority(htx, sl, hdr_value)) |
| 1340 | goto error_htx; |
| 1341 | } |
Amaury Denoyelle | 6d975f0 | 2020-12-22 14:08:52 +0100 | [diff] [blame] | 1342 | if (isteqi(hdr->name, ist("connection"))) |
| 1343 | connection_hdr = 1; |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 1344 | } |
| 1345 | |
| 1346 | } |
| 1347 | if (check->proxy->options2 & PR_O2_CHK_SNDST) { |
| 1348 | chunk_reset(tmp); |
| 1349 | httpchk_build_status_header(check->server, tmp); |
| 1350 | if (!htx_add_header(htx, ist("X-Haproxy-Server-State"), ist2(b_orig(tmp), b_data(tmp)))) |
| 1351 | goto error_htx; |
| 1352 | } |
| 1353 | |
| 1354 | |
| 1355 | if (send->http.flags & TCPCHK_SND_HTTP_FL_BODY_FMT) { |
| 1356 | chunk_reset(tmp); |
| 1357 | tmp->data = sess_build_logline(check->sess, NULL, b_orig(tmp), b_size(tmp), &send->http.body_fmt); |
| 1358 | body = ist2(b_orig(tmp), b_data(tmp)); |
| 1359 | } |
| 1360 | else |
| 1361 | body = send->http.body; |
| 1362 | clen = ist((!istlen(body) ? "0" : ultoa(istlen(body)))); |
| 1363 | |
Amaury Denoyelle | 6d975f0 | 2020-12-22 14:08:52 +0100 | [diff] [blame] | 1364 | if ((!connection_hdr && !htx_add_header(htx, ist("Connection"), ist("close"))) || |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 1365 | !htx_add_header(htx, ist("Content-length"), clen)) |
| 1366 | goto error_htx; |
| 1367 | |
| 1368 | |
| 1369 | if (!htx_add_endof(htx, HTX_BLK_EOH) || |
Christopher Faulet | 810df06 | 2020-07-22 16:20:34 +0200 | [diff] [blame] | 1370 | (istlen(body) && !htx_add_data_atonce(htx, body))) |
| 1371 | goto error_htx; |
| 1372 | |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 1373 | /* no more data are expected */ |
| 1374 | htx->flags |= HTX_FL_EOM; |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 1375 | htx_to_buf(htx, &check->bo); |
| 1376 | break; |
| 1377 | } |
| 1378 | case TCPCHK_SEND_UNDEF: |
| 1379 | /* Should never happen. */ |
| 1380 | ret = TCPCHK_EVAL_STOP; |
| 1381 | goto out; |
| 1382 | }; |
| 1383 | |
Christopher Faulet | 39066c2 | 2020-11-25 13:34:51 +0100 | [diff] [blame] | 1384 | do_send: |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 1385 | if (conn->mux->snd_buf(cs, &check->bo, |
| 1386 | (IS_HTX_CONN(conn) ? (htxbuf(&check->bo))->data: b_data(&check->bo)), 0) <= 0) { |
| 1387 | if ((conn->flags & CO_FL_ERROR) || (cs->flags & CS_FL_ERROR)) { |
| 1388 | ret = TCPCHK_EVAL_STOP; |
| 1389 | goto out; |
| 1390 | } |
| 1391 | } |
| 1392 | if ((IS_HTX_CONN(conn) && !htx_is_empty(htxbuf(&check->bo))) || b_data(&check->bo)) { |
| 1393 | cs->conn->mux->subscribe(cs, SUB_RETRY_SEND, &check->wait_list); |
| 1394 | ret = TCPCHK_EVAL_WAIT; |
| 1395 | goto out; |
| 1396 | } |
| 1397 | |
| 1398 | out: |
| 1399 | free_trash_chunk(tmp); |
Christopher Faulet | b381a50 | 2020-11-25 13:47:00 +0100 | [diff] [blame] | 1400 | if (!b_data(&check->bo) || ret == TCPCHK_EVAL_STOP) |
| 1401 | check_release_buf(check, &check->bo); |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 1402 | return ret; |
| 1403 | |
| 1404 | error_htx: |
| 1405 | if (htx) { |
| 1406 | htx_reset(htx); |
| 1407 | htx_to_buf(htx, &check->bo); |
| 1408 | } |
| 1409 | chunk_printf(&trash, "tcp-check send : failed to build HTTP request at step %d", |
| 1410 | tcpcheck_get_step_id(check, rule)); |
| 1411 | set_server_check_status(check, HCHK_STATUS_L7RSP, trash.area); |
| 1412 | ret = TCPCHK_EVAL_STOP; |
| 1413 | goto out; |
| 1414 | |
| 1415 | error_lf: |
| 1416 | chunk_printf(&trash, "tcp-check send : failed to build log-format string at step %d", |
| 1417 | tcpcheck_get_step_id(check, rule)); |
| 1418 | set_server_check_status(check, HCHK_STATUS_L7RSP, trash.area); |
| 1419 | ret = TCPCHK_EVAL_STOP; |
| 1420 | goto out; |
| 1421 | |
| 1422 | } |
| 1423 | |
| 1424 | /* Try to receive data before evaluating a tcp-check expect rule. Returns |
| 1425 | * TCPCHK_EVAL_WAIT if it is already subscribed on receive events or if nothing |
| 1426 | * was received, TCPCHK_EVAL_CONTINUE to evaluate the expect rule or |
| 1427 | * TCPCHK_EVAL_STOP if an error occurred. |
| 1428 | */ |
| 1429 | enum tcpcheck_eval_ret tcpcheck_eval_recv(struct check *check, struct tcpcheck_rule *rule) |
| 1430 | { |
| 1431 | struct conn_stream *cs = check->cs; |
| 1432 | struct connection *conn = cs_conn(cs); |
| 1433 | enum tcpcheck_eval_ret ret = TCPCHK_EVAL_CONTINUE; |
| 1434 | size_t max, read, cur_read = 0; |
| 1435 | int is_empty; |
| 1436 | int read_poll = MAX_READ_POLL_LOOPS; |
| 1437 | |
| 1438 | if (check->wait_list.events & SUB_RETRY_RECV) |
| 1439 | goto wait_more_data; |
| 1440 | |
| 1441 | if (cs->flags & CS_FL_EOS) |
| 1442 | goto end_recv; |
| 1443 | |
Christopher Faulet | b381a50 | 2020-11-25 13:47:00 +0100 | [diff] [blame] | 1444 | if (check->state & CHK_ST_IN_ALLOC) |
| 1445 | goto wait_more_data; |
| 1446 | |
| 1447 | if (!check_get_buf(check, &check->bi)) { |
| 1448 | check->state |= CHK_ST_IN_ALLOC; |
| 1449 | goto wait_more_data; |
| 1450 | } |
| 1451 | |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 1452 | /* errors on the connection and the conn-stream were already checked */ |
| 1453 | |
| 1454 | /* prepare to detect if the mux needs more room */ |
| 1455 | cs->flags &= ~CS_FL_WANT_ROOM; |
| 1456 | |
| 1457 | while ((cs->flags & CS_FL_RCV_MORE) || |
| 1458 | (!(conn->flags & CO_FL_ERROR) && !(cs->flags & (CS_FL_ERROR|CS_FL_EOS)))) { |
| 1459 | max = (IS_HTX_CS(cs) ? htx_free_space(htxbuf(&check->bi)) : b_room(&check->bi)); |
| 1460 | read = conn->mux->rcv_buf(cs, &check->bi, max, 0); |
| 1461 | cur_read += read; |
| 1462 | if (!read || |
| 1463 | (cs->flags & CS_FL_WANT_ROOM) || |
| 1464 | (--read_poll <= 0) || |
| 1465 | (read < max && read >= global.tune.recv_enough)) |
| 1466 | break; |
| 1467 | } |
| 1468 | |
| 1469 | end_recv: |
| 1470 | is_empty = (IS_HTX_CS(cs) ? htx_is_empty(htxbuf(&check->bi)) : !b_data(&check->bi)); |
| 1471 | if (is_empty && ((conn->flags & CO_FL_ERROR) || (cs->flags & CS_FL_ERROR))) { |
| 1472 | /* Report network errors only if we got no other data. Otherwise |
| 1473 | * we'll let the upper layers decide whether the response is OK |
| 1474 | * or not. It is very common that an RST sent by the server is |
| 1475 | * reported as an error just after the last data chunk. |
| 1476 | */ |
| 1477 | goto stop; |
| 1478 | } |
| 1479 | if (!cur_read) { |
| 1480 | if (!(cs->flags & (CS_FL_WANT_ROOM|CS_FL_ERROR|CS_FL_EOS))) { |
| 1481 | conn->mux->subscribe(cs, SUB_RETRY_RECV, &check->wait_list); |
| 1482 | goto wait_more_data; |
| 1483 | } |
| 1484 | if (is_empty) { |
| 1485 | int status; |
| 1486 | |
| 1487 | chunk_printf(&trash, "TCPCHK got an empty response at step %d", |
| 1488 | tcpcheck_get_step_id(check, rule)); |
| 1489 | if (rule->comment) |
| 1490 | chunk_appendf(&trash, " comment: '%s'", rule->comment); |
| 1491 | |
| 1492 | status = ((rule->expect.err_status != HCHK_STATUS_UNKNOWN) ? rule->expect.err_status : HCHK_STATUS_L7RSP); |
| 1493 | set_server_check_status(check, status, trash.area); |
| 1494 | goto stop; |
| 1495 | } |
| 1496 | } |
| 1497 | |
| 1498 | out: |
Christopher Faulet | b381a50 | 2020-11-25 13:47:00 +0100 | [diff] [blame] | 1499 | if (!b_data(&check->bi) || ret == TCPCHK_EVAL_STOP) |
| 1500 | check_release_buf(check, &check->bi); |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 1501 | return ret; |
| 1502 | |
| 1503 | stop: |
| 1504 | ret = TCPCHK_EVAL_STOP; |
| 1505 | goto out; |
| 1506 | |
| 1507 | wait_more_data: |
| 1508 | ret = TCPCHK_EVAL_WAIT; |
| 1509 | goto out; |
| 1510 | } |
| 1511 | |
| 1512 | /* Evaluates an HTTP TCPCHK_ACT_EXPECT rule. If <last_read> is set , no more data |
| 1513 | * are expected. Returns TCPCHK_EVAL_WAIT to wait for more data, |
| 1514 | * TCPCHK_EVAL_CONTINUE to evaluate the next rule or TCPCHK_EVAL_STOP if an |
| 1515 | * error occurred. |
| 1516 | */ |
| 1517 | enum tcpcheck_eval_ret tcpcheck_eval_expect_http(struct check *check, struct tcpcheck_rule *rule, int last_read) |
| 1518 | { |
| 1519 | struct htx *htx = htxbuf(&check->bi); |
| 1520 | struct htx_sl *sl; |
| 1521 | struct htx_blk *blk; |
| 1522 | enum tcpcheck_eval_ret ret = TCPCHK_EVAL_CONTINUE; |
| 1523 | struct tcpcheck_expect *expect = &rule->expect; |
| 1524 | struct buffer *msg = NULL, *tmp = NULL, *nbuf = NULL, *vbuf = NULL; |
| 1525 | enum healthcheck_status status = HCHK_STATUS_L7RSP; |
| 1526 | struct ist desc = IST_NULL; |
| 1527 | int i, match, inverse; |
| 1528 | |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 1529 | last_read |= (!htx_free_data_space(htx) || (htx->flags & HTX_FL_EOM)); |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 1530 | |
| 1531 | if (htx->flags & HTX_FL_PARSING_ERROR) { |
| 1532 | status = HCHK_STATUS_L7RSP; |
| 1533 | goto error; |
| 1534 | } |
| 1535 | |
| 1536 | if (htx_is_empty(htx)) { |
| 1537 | if (last_read) { |
| 1538 | status = HCHK_STATUS_L7RSP; |
| 1539 | goto error; |
| 1540 | } |
| 1541 | goto wait_more_data; |
| 1542 | } |
| 1543 | |
| 1544 | sl = http_get_stline(htx); |
| 1545 | check->code = sl->info.res.status; |
| 1546 | |
| 1547 | if (check->server && |
| 1548 | (check->server->proxy->options & PR_O_DISABLE404) && |
| 1549 | (check->server->next_state != SRV_ST_STOPPED) && |
| 1550 | (check->code == 404)) { |
| 1551 | /* 404 may be accepted as "stopping" only if the server was up */ |
| 1552 | goto out; |
| 1553 | } |
| 1554 | |
| 1555 | inverse = !!(expect->flags & TCPCHK_EXPT_FL_INV); |
| 1556 | /* Make GCC happy ; initialize match to a failure state. */ |
| 1557 | match = inverse; |
| 1558 | status = expect->err_status; |
| 1559 | |
| 1560 | switch (expect->type) { |
| 1561 | case TCPCHK_EXPECT_HTTP_STATUS: |
| 1562 | match = 0; |
| 1563 | for (i = 0; i < expect->codes.num; i++) { |
| 1564 | if (sl->info.res.status >= expect->codes.codes[i][0] && |
| 1565 | sl->info.res.status <= expect->codes.codes[i][1]) { |
| 1566 | match = 1; |
| 1567 | break; |
| 1568 | } |
| 1569 | } |
| 1570 | |
| 1571 | /* Set status and description in case of error */ |
| 1572 | status = ((status != HCHK_STATUS_UNKNOWN) ? status : HCHK_STATUS_L7STS); |
| 1573 | if (LIST_ISEMPTY(&expect->onerror_fmt)) |
| 1574 | desc = htx_sl_res_reason(sl); |
| 1575 | break; |
| 1576 | case TCPCHK_EXPECT_HTTP_STATUS_REGEX: |
| 1577 | match = regex_exec2(expect->regex, HTX_SL_RES_CPTR(sl), HTX_SL_RES_CLEN(sl)); |
| 1578 | |
| 1579 | /* Set status and description in case of error */ |
| 1580 | status = ((status != HCHK_STATUS_UNKNOWN) ? status : HCHK_STATUS_L7STS); |
| 1581 | if (LIST_ISEMPTY(&expect->onerror_fmt)) |
| 1582 | desc = htx_sl_res_reason(sl); |
| 1583 | break; |
| 1584 | |
| 1585 | case TCPCHK_EXPECT_HTTP_HEADER: { |
| 1586 | struct http_hdr_ctx ctx; |
| 1587 | struct ist npat, vpat, value; |
| 1588 | int full = (expect->flags & (TCPCHK_EXPT_FL_HTTP_HVAL_NONE|TCPCHK_EXPT_FL_HTTP_HVAL_FULL)); |
| 1589 | |
| 1590 | if (expect->flags & TCPCHK_EXPT_FL_HTTP_HNAME_FMT) { |
| 1591 | nbuf = alloc_trash_chunk(); |
| 1592 | if (!nbuf) { |
| 1593 | status = HCHK_STATUS_L7RSP; |
| 1594 | desc = ist("Failed to allocate buffer to eval log-format string"); |
| 1595 | goto error; |
| 1596 | } |
| 1597 | nbuf->data = sess_build_logline(check->sess, NULL, b_orig(nbuf), b_size(nbuf), &expect->hdr.name_fmt); |
| 1598 | if (!b_data(nbuf)) { |
| 1599 | status = HCHK_STATUS_L7RSP; |
| 1600 | desc = ist("log-format string evaluated to an empty string"); |
| 1601 | goto error; |
| 1602 | } |
| 1603 | npat = ist2(b_orig(nbuf), b_data(nbuf)); |
| 1604 | } |
| 1605 | else if (!(expect->flags & TCPCHK_EXPT_FL_HTTP_HNAME_REG)) |
| 1606 | npat = expect->hdr.name; |
| 1607 | |
| 1608 | if (expect->flags & TCPCHK_EXPT_FL_HTTP_HVAL_FMT) { |
| 1609 | vbuf = alloc_trash_chunk(); |
| 1610 | if (!vbuf) { |
| 1611 | status = HCHK_STATUS_L7RSP; |
| 1612 | desc = ist("Failed to allocate buffer to eval log-format string"); |
| 1613 | goto error; |
| 1614 | } |
| 1615 | vbuf->data = sess_build_logline(check->sess, NULL, b_orig(vbuf), b_size(vbuf), &expect->hdr.value_fmt); |
| 1616 | if (!b_data(vbuf)) { |
| 1617 | status = HCHK_STATUS_L7RSP; |
| 1618 | desc = ist("log-format string evaluated to an empty string"); |
| 1619 | goto error; |
| 1620 | } |
| 1621 | vpat = ist2(b_orig(vbuf), b_data(vbuf)); |
| 1622 | } |
| 1623 | else if (!(expect->flags & TCPCHK_EXPT_FL_HTTP_HVAL_REG)) |
| 1624 | vpat = expect->hdr.value; |
| 1625 | |
| 1626 | match = 0; |
| 1627 | ctx.blk = NULL; |
| 1628 | while (1) { |
| 1629 | switch (expect->flags & TCPCHK_EXPT_FL_HTTP_HNAME_TYPE) { |
| 1630 | case TCPCHK_EXPT_FL_HTTP_HNAME_STR: |
| 1631 | if (!http_find_str_header(htx, npat, &ctx, full)) |
| 1632 | goto end_of_match; |
| 1633 | break; |
| 1634 | case TCPCHK_EXPT_FL_HTTP_HNAME_BEG: |
| 1635 | if (!http_find_pfx_header(htx, npat, &ctx, full)) |
| 1636 | goto end_of_match; |
| 1637 | break; |
| 1638 | case TCPCHK_EXPT_FL_HTTP_HNAME_END: |
| 1639 | if (!http_find_sfx_header(htx, npat, &ctx, full)) |
| 1640 | goto end_of_match; |
| 1641 | break; |
| 1642 | case TCPCHK_EXPT_FL_HTTP_HNAME_SUB: |
| 1643 | if (!http_find_sub_header(htx, npat, &ctx, full)) |
| 1644 | goto end_of_match; |
| 1645 | break; |
| 1646 | case TCPCHK_EXPT_FL_HTTP_HNAME_REG: |
| 1647 | if (!http_match_header(htx, expect->hdr.name_re, &ctx, full)) |
| 1648 | goto end_of_match; |
| 1649 | break; |
| 1650 | default: |
| 1651 | /* should never happen */ |
| 1652 | goto end_of_match; |
| 1653 | } |
| 1654 | |
| 1655 | /* A header has matched the name pattern, let's test its |
| 1656 | * value now (always defined from there). If there is no |
| 1657 | * value pattern, it is a good match. |
| 1658 | */ |
| 1659 | |
| 1660 | if (expect->flags & TCPCHK_EXPT_FL_HTTP_HVAL_NONE) { |
| 1661 | match = 1; |
| 1662 | goto end_of_match; |
| 1663 | } |
| 1664 | |
| 1665 | value = ctx.value; |
| 1666 | switch (expect->flags & TCPCHK_EXPT_FL_HTTP_HVAL_TYPE) { |
| 1667 | case TCPCHK_EXPT_FL_HTTP_HVAL_STR: |
| 1668 | if (isteq(value, vpat)) { |
| 1669 | match = 1; |
| 1670 | goto end_of_match; |
| 1671 | } |
| 1672 | break; |
| 1673 | case TCPCHK_EXPT_FL_HTTP_HVAL_BEG: |
| 1674 | if (istlen(value) < istlen(vpat)) |
| 1675 | break; |
| 1676 | value = ist2(istptr(value), istlen(vpat)); |
| 1677 | if (isteq(value, vpat)) { |
| 1678 | match = 1; |
| 1679 | goto end_of_match; |
| 1680 | } |
| 1681 | break; |
| 1682 | case TCPCHK_EXPT_FL_HTTP_HVAL_END: |
| 1683 | if (istlen(value) < istlen(vpat)) |
| 1684 | break; |
| 1685 | value = ist2(istptr(value) + istlen(value) - istlen(vpat), istlen(vpat)); |
| 1686 | if (isteq(value, vpat)) { |
| 1687 | match = 1; |
| 1688 | goto end_of_match; |
| 1689 | } |
| 1690 | break; |
| 1691 | case TCPCHK_EXPT_FL_HTTP_HVAL_SUB: |
| 1692 | if (isttest(istist(value, vpat))) { |
| 1693 | match = 1; |
| 1694 | goto end_of_match; |
| 1695 | } |
| 1696 | break; |
| 1697 | case TCPCHK_EXPT_FL_HTTP_HVAL_REG: |
| 1698 | if (regex_exec2(expect->hdr.value_re, istptr(value), istlen(value))) { |
| 1699 | match = 1; |
| 1700 | goto end_of_match; |
| 1701 | } |
| 1702 | break; |
| 1703 | } |
| 1704 | } |
| 1705 | |
| 1706 | end_of_match: |
| 1707 | status = ((status != HCHK_STATUS_UNKNOWN) ? status : HCHK_STATUS_L7STS); |
| 1708 | if (LIST_ISEMPTY(&expect->onerror_fmt)) |
| 1709 | desc = htx_sl_res_reason(sl); |
| 1710 | break; |
| 1711 | } |
| 1712 | |
| 1713 | case TCPCHK_EXPECT_HTTP_BODY: |
| 1714 | case TCPCHK_EXPECT_HTTP_BODY_REGEX: |
| 1715 | case TCPCHK_EXPECT_HTTP_BODY_LF: |
| 1716 | match = 0; |
| 1717 | chunk_reset(&trash); |
| 1718 | for (blk = htx_get_head_blk(htx); blk; blk = htx_get_next_blk(htx, blk)) { |
| 1719 | enum htx_blk_type type = htx_get_blk_type(blk); |
| 1720 | |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 1721 | if (type == HTX_BLK_TLR || type == HTX_BLK_EOT) |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 1722 | break; |
| 1723 | if (type == HTX_BLK_DATA) { |
| 1724 | if (!chunk_istcat(&trash, htx_get_blk_value(htx, blk))) |
| 1725 | break; |
| 1726 | } |
| 1727 | } |
| 1728 | |
| 1729 | if (!b_data(&trash)) { |
| 1730 | if (!last_read) |
| 1731 | goto wait_more_data; |
| 1732 | status = ((status != HCHK_STATUS_UNKNOWN) ? status : HCHK_STATUS_L7RSP); |
| 1733 | if (LIST_ISEMPTY(&expect->onerror_fmt)) |
| 1734 | desc = ist("HTTP content check could not find a response body"); |
| 1735 | goto error; |
| 1736 | } |
| 1737 | |
| 1738 | if (expect->type == TCPCHK_EXPECT_HTTP_BODY_LF) { |
| 1739 | tmp = alloc_trash_chunk(); |
| 1740 | if (!tmp) { |
| 1741 | status = HCHK_STATUS_L7RSP; |
| 1742 | desc = ist("Failed to allocate buffer to eval log-format string"); |
| 1743 | goto error; |
| 1744 | } |
| 1745 | tmp->data = sess_build_logline(check->sess, NULL, b_orig(tmp), b_size(tmp), &expect->fmt); |
| 1746 | if (!b_data(tmp)) { |
| 1747 | status = HCHK_STATUS_L7RSP; |
| 1748 | desc = ist("log-format string evaluated to an empty string"); |
| 1749 | goto error; |
| 1750 | } |
| 1751 | } |
| 1752 | |
| 1753 | if (!last_read && |
| 1754 | ((expect->type == TCPCHK_EXPECT_HTTP_BODY && b_data(&trash) < istlen(expect->data)) || |
| 1755 | ((expect->type == TCPCHK_EXPECT_HTTP_BODY_LF && b_data(&trash) < b_data(tmp))) || |
| 1756 | (expect->min_recv > 0 && b_data(&trash) < expect->min_recv))) { |
| 1757 | ret = TCPCHK_EVAL_WAIT; |
| 1758 | goto out; |
| 1759 | } |
| 1760 | |
| 1761 | if (expect->type ==TCPCHK_EXPECT_HTTP_BODY) |
| 1762 | match = my_memmem(b_orig(&trash), b_data(&trash), istptr(expect->data), istlen(expect->data)) != NULL; |
| 1763 | else if (expect->type ==TCPCHK_EXPECT_HTTP_BODY_LF) |
| 1764 | match = my_memmem(b_orig(&trash), b_data(&trash), b_orig(tmp), b_data(tmp)) != NULL; |
| 1765 | else |
| 1766 | match = regex_exec2(expect->regex, b_orig(&trash), b_data(&trash)); |
| 1767 | |
Christopher Faulet | cad5f5e | 2020-12-09 18:45:47 +0100 | [diff] [blame] | 1768 | /* Wait for more data on mismatch only if no minimum is defined (-1), |
| 1769 | * otherwise the absence of match is already conclusive. |
| 1770 | */ |
| 1771 | if (!match && !last_read && (expect->min_recv == -1)) { |
| 1772 | ret = TCPCHK_EVAL_WAIT; |
| 1773 | goto out; |
| 1774 | } |
| 1775 | |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 1776 | /* Set status and description in case of error */ |
| 1777 | status = ((status != HCHK_STATUS_UNKNOWN) ? status : HCHK_STATUS_L7RSP); |
| 1778 | if (LIST_ISEMPTY(&expect->onerror_fmt)) |
| 1779 | desc = (inverse |
| 1780 | ? ist("HTTP check matched unwanted content") |
| 1781 | : ist("HTTP content check did not match")); |
| 1782 | break; |
| 1783 | |
| 1784 | |
| 1785 | default: |
| 1786 | /* should never happen */ |
| 1787 | status = ((status != HCHK_STATUS_UNKNOWN) ? status : HCHK_STATUS_L7RSP); |
| 1788 | goto error; |
| 1789 | } |
| 1790 | |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 1791 | if (!(match ^ inverse)) |
| 1792 | goto error; |
| 1793 | |
| 1794 | out: |
| 1795 | free_trash_chunk(tmp); |
| 1796 | free_trash_chunk(nbuf); |
| 1797 | free_trash_chunk(vbuf); |
| 1798 | free_trash_chunk(msg); |
| 1799 | return ret; |
| 1800 | |
| 1801 | error: |
| 1802 | ret = TCPCHK_EVAL_STOP; |
| 1803 | msg = alloc_trash_chunk(); |
| 1804 | if (msg) |
| 1805 | tcpcheck_expect_onerror_message(msg, check, rule, 0, desc); |
| 1806 | set_server_check_status(check, status, (msg ? b_head(msg) : NULL)); |
| 1807 | goto out; |
| 1808 | |
| 1809 | wait_more_data: |
| 1810 | ret = TCPCHK_EVAL_WAIT; |
| 1811 | goto out; |
| 1812 | } |
| 1813 | |
| 1814 | /* Evaluates a TCP TCPCHK_ACT_EXPECT rule. Returns TCPCHK_EVAL_WAIT to wait for |
| 1815 | * more data, TCPCHK_EVAL_CONTINUE to evaluate the next rule or TCPCHK_EVAL_STOP |
| 1816 | * if an error occurred. |
| 1817 | */ |
| 1818 | enum tcpcheck_eval_ret tcpcheck_eval_expect(struct check *check, struct tcpcheck_rule *rule, int last_read) |
| 1819 | { |
| 1820 | enum tcpcheck_eval_ret ret = TCPCHK_EVAL_CONTINUE; |
| 1821 | struct tcpcheck_expect *expect = &rule->expect; |
| 1822 | struct buffer *msg = NULL, *tmp = NULL; |
| 1823 | struct ist desc = IST_NULL; |
| 1824 | enum healthcheck_status status; |
| 1825 | int match, inverse; |
| 1826 | |
| 1827 | last_read |= b_full(&check->bi); |
| 1828 | |
| 1829 | /* The current expect might need more data than the previous one, check again |
| 1830 | * that the minimum amount data required to match is respected. |
| 1831 | */ |
| 1832 | if (!last_read) { |
| 1833 | if ((expect->type == TCPCHK_EXPECT_STRING || expect->type == TCPCHK_EXPECT_BINARY) && |
| 1834 | (b_data(&check->bi) < istlen(expect->data))) { |
| 1835 | ret = TCPCHK_EVAL_WAIT; |
| 1836 | goto out; |
| 1837 | } |
| 1838 | if (expect->min_recv > 0 && (b_data(&check->bi) < expect->min_recv)) { |
| 1839 | ret = TCPCHK_EVAL_WAIT; |
| 1840 | goto out; |
| 1841 | } |
| 1842 | } |
| 1843 | |
| 1844 | inverse = !!(expect->flags & TCPCHK_EXPT_FL_INV); |
| 1845 | /* Make GCC happy ; initialize match to a failure state. */ |
| 1846 | match = inverse; |
| 1847 | status = ((expect->err_status != HCHK_STATUS_UNKNOWN) ? expect->err_status : HCHK_STATUS_L7RSP); |
| 1848 | |
| 1849 | switch (expect->type) { |
| 1850 | case TCPCHK_EXPECT_STRING: |
| 1851 | case TCPCHK_EXPECT_BINARY: |
| 1852 | match = my_memmem(b_head(&check->bi), b_data(&check->bi), istptr(expect->data), istlen(expect->data)) != NULL; |
| 1853 | break; |
| 1854 | case TCPCHK_EXPECT_STRING_REGEX: |
| 1855 | match = regex_exec2(expect->regex, b_head(&check->bi), MIN(b_data(&check->bi), b_size(&check->bi)-1)); |
| 1856 | break; |
| 1857 | |
| 1858 | case TCPCHK_EXPECT_BINARY_REGEX: |
| 1859 | chunk_reset(&trash); |
| 1860 | dump_binary(&trash, b_head(&check->bi), b_data(&check->bi)); |
| 1861 | match = regex_exec2(expect->regex, b_head(&trash), MIN(b_data(&trash), b_size(&trash)-1)); |
| 1862 | break; |
| 1863 | |
| 1864 | case TCPCHK_EXPECT_STRING_LF: |
| 1865 | case TCPCHK_EXPECT_BINARY_LF: |
| 1866 | match = 0; |
| 1867 | tmp = alloc_trash_chunk(); |
| 1868 | if (!tmp) { |
| 1869 | status = HCHK_STATUS_L7RSP; |
| 1870 | desc = ist("Failed to allocate buffer to eval format string"); |
| 1871 | goto error; |
| 1872 | } |
| 1873 | tmp->data = sess_build_logline(check->sess, NULL, b_orig(tmp), b_size(tmp), &expect->fmt); |
| 1874 | if (!b_data(tmp)) { |
| 1875 | status = HCHK_STATUS_L7RSP; |
| 1876 | desc = ist("log-format string evaluated to an empty string"); |
| 1877 | goto error; |
| 1878 | } |
| 1879 | if (expect->type == TCPCHK_EXPECT_BINARY_LF) { |
| 1880 | int len = tmp->data; |
| 1881 | if (parse_binary(b_orig(tmp), &tmp->area, &len, NULL) == 0) { |
| 1882 | status = HCHK_STATUS_L7RSP; |
| 1883 | desc = ist("Failed to parse hexastring resulting of eval of a log-format string"); |
| 1884 | goto error; |
| 1885 | } |
| 1886 | tmp->data = len; |
| 1887 | } |
| 1888 | if (b_data(&check->bi) < tmp->data) { |
| 1889 | if (!last_read) { |
| 1890 | ret = TCPCHK_EVAL_WAIT; |
| 1891 | goto out; |
| 1892 | } |
| 1893 | break; |
| 1894 | } |
| 1895 | match = my_memmem(b_head(&check->bi), b_data(&check->bi), b_orig(tmp), b_data(tmp)) != NULL; |
| 1896 | break; |
| 1897 | |
| 1898 | case TCPCHK_EXPECT_CUSTOM: |
| 1899 | if (expect->custom) |
| 1900 | ret = expect->custom(check, rule, last_read); |
| 1901 | goto out; |
| 1902 | default: |
| 1903 | /* Should never happen. */ |
| 1904 | ret = TCPCHK_EVAL_STOP; |
| 1905 | goto out; |
| 1906 | } |
| 1907 | |
| 1908 | |
| 1909 | /* Wait for more data on mismatch only if no minimum is defined (-1), |
| 1910 | * otherwise the absence of match is already conclusive. |
| 1911 | */ |
| 1912 | if (!match && !last_read && (expect->min_recv == -1)) { |
| 1913 | ret = TCPCHK_EVAL_WAIT; |
| 1914 | goto out; |
| 1915 | } |
| 1916 | |
| 1917 | /* Result as expected, next rule. */ |
| 1918 | if (match ^ inverse) |
| 1919 | goto out; |
| 1920 | |
| 1921 | error: |
| 1922 | /* From this point on, we matched something we did not want, this is an error state. */ |
| 1923 | ret = TCPCHK_EVAL_STOP; |
| 1924 | msg = alloc_trash_chunk(); |
| 1925 | if (msg) |
| 1926 | tcpcheck_expect_onerror_message(msg, check, rule, match, desc); |
| 1927 | set_server_check_status(check, status, (msg ? b_head(msg) : NULL)); |
| 1928 | free_trash_chunk(msg); |
| 1929 | |
| 1930 | out: |
| 1931 | free_trash_chunk(tmp); |
| 1932 | return ret; |
| 1933 | } |
| 1934 | |
| 1935 | /* Evaluates a TCPCHK_ACT_ACTION_KW rule. Returns TCPCHK_EVAL_CONTINUE to |
| 1936 | * evaluate the next rule or TCPCHK_EVAL_STOP if an error occurred. It never |
| 1937 | * waits. |
| 1938 | */ |
| 1939 | enum tcpcheck_eval_ret tcpcheck_eval_action_kw(struct check *check, struct tcpcheck_rule *rule) |
| 1940 | { |
| 1941 | enum tcpcheck_eval_ret ret = TCPCHK_EVAL_CONTINUE; |
| 1942 | struct act_rule *act_rule; |
| 1943 | enum act_return act_ret; |
| 1944 | |
| 1945 | act_rule =rule->action_kw.rule; |
| 1946 | act_ret = act_rule->action_ptr(act_rule, check->proxy, check->sess, NULL, 0); |
| 1947 | if (act_ret != ACT_RET_CONT) { |
| 1948 | chunk_printf(&trash, "TCPCHK ACTION unexpected result at step %d\n", |
| 1949 | tcpcheck_get_step_id(check, rule)); |
| 1950 | set_server_check_status(check, HCHK_STATUS_L7RSP, trash.area); |
| 1951 | ret = TCPCHK_EVAL_STOP; |
| 1952 | } |
| 1953 | |
| 1954 | return ret; |
| 1955 | } |
| 1956 | |
| 1957 | /* Executes a tcp-check ruleset. Note that this is called both from the |
| 1958 | * connection's wake() callback and from the check scheduling task. It returns |
| 1959 | * 0 on normal cases, or <0 if a close() has happened on an existing connection, |
| 1960 | * presenting the risk of an fd replacement. |
| 1961 | * |
| 1962 | * Please do NOT place any return statement in this function and only leave |
| 1963 | * via the out_end_tcpcheck label after setting retcode. |
| 1964 | */ |
| 1965 | int tcpcheck_main(struct check *check) |
| 1966 | { |
| 1967 | struct tcpcheck_rule *rule; |
| 1968 | struct conn_stream *cs = check->cs; |
| 1969 | struct connection *conn = cs_conn(cs); |
| 1970 | int must_read = 1, last_read = 0; |
Christopher Faulet | 39066c2 | 2020-11-25 13:34:51 +0100 | [diff] [blame] | 1971 | int retcode = 0; |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 1972 | enum tcpcheck_eval_ret eval_ret; |
| 1973 | |
| 1974 | /* here, we know that the check is complete or that it failed */ |
| 1975 | if (check->result != CHK_RES_UNKNOWN) |
| 1976 | goto out; |
| 1977 | |
| 1978 | /* Note: the conn-stream and the connection may only be undefined before |
| 1979 | * the first rule evaluation (it is always a connect rule) or when the |
Christopher Faulet | b1bb069 | 2020-11-25 16:47:30 +0100 | [diff] [blame] | 1980 | * conn-stream allocation failed on a connect rule, during cs allocation. |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 1981 | */ |
| 1982 | |
| 1983 | /* 1- check for connection error, if any */ |
| 1984 | if ((conn && conn->flags & CO_FL_ERROR) || (cs && cs->flags & CS_FL_ERROR)) |
| 1985 | goto out_end_tcpcheck; |
| 1986 | |
Christopher Faulet | b1bb069 | 2020-11-25 16:47:30 +0100 | [diff] [blame] | 1987 | /* 2- check if a rule must be resume. It happens if check->current_step |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 1988 | * is defined. */ |
| 1989 | else if (check->current_step) |
| 1990 | rule = check->current_step; |
| 1991 | |
Christopher Faulet | b1bb069 | 2020-11-25 16:47:30 +0100 | [diff] [blame] | 1992 | /* 3- It is the first evaluation. We must create a session and preset |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 1993 | * tcp-check variables */ |
| 1994 | else { |
| 1995 | struct tcpcheck_var *var; |
| 1996 | |
| 1997 | /* First evaluation, create a session */ |
| 1998 | check->sess = session_new(&checks_fe, NULL, &check->obj_type); |
| 1999 | if (!check->sess) { |
| 2000 | chunk_printf(&trash, "TCPCHK error allocating check session"); |
| 2001 | set_server_check_status(check, HCHK_STATUS_SOCKERR, trash.area); |
| 2002 | goto out_end_tcpcheck; |
| 2003 | } |
| 2004 | vars_init(&check->vars, SCOPE_CHECK); |
| 2005 | rule = LIST_NEXT(check->tcpcheck_rules->list, typeof(rule), list); |
| 2006 | |
| 2007 | /* Preset tcp-check variables */ |
| 2008 | list_for_each_entry(var, &check->tcpcheck_rules->preset_vars, list) { |
| 2009 | struct sample smp; |
| 2010 | |
| 2011 | memset(&smp, 0, sizeof(smp)); |
| 2012 | smp_set_owner(&smp, check->proxy, check->sess, NULL, SMP_OPT_FINAL); |
| 2013 | smp.data = var->data; |
| 2014 | vars_set_by_name_ifexist(istptr(var->name), istlen(var->name), &smp); |
| 2015 | } |
| 2016 | } |
| 2017 | |
| 2018 | /* Now evaluate the tcp-check rules */ |
| 2019 | |
| 2020 | list_for_each_entry_from(rule, check->tcpcheck_rules->list, list) { |
| 2021 | check->code = 0; |
| 2022 | switch (rule->action) { |
| 2023 | case TCPCHK_ACT_CONNECT: |
Christopher Faulet | 8f10042 | 2021-01-18 15:47:03 +0100 | [diff] [blame] | 2024 | /* Not the first connection, release it first */ |
Christopher Faulet | b1bb069 | 2020-11-25 16:47:30 +0100 | [diff] [blame] | 2025 | if (cs && check->current_step != rule) { |
Christopher Faulet | 8f10042 | 2021-01-18 15:47:03 +0100 | [diff] [blame] | 2026 | check->state |= CHK_ST_CLOSE_CONN; |
| 2027 | retcode = -1; |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 2028 | } |
Christopher Faulet | b1bb069 | 2020-11-25 16:47:30 +0100 | [diff] [blame] | 2029 | |
| 2030 | check->current_step = rule; |
Christopher Faulet | 8f10042 | 2021-01-18 15:47:03 +0100 | [diff] [blame] | 2031 | |
| 2032 | /* We are still waiting the connection gets closed */ |
| 2033 | if (cs && (check->state & CHK_ST_CLOSE_CONN)) { |
| 2034 | eval_ret = TCPCHK_EVAL_WAIT; |
| 2035 | break; |
| 2036 | } |
| 2037 | |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 2038 | eval_ret = tcpcheck_eval_connect(check, rule); |
| 2039 | |
| 2040 | /* Refresh conn-stream and connection */ |
| 2041 | cs = check->cs; |
| 2042 | conn = cs_conn(cs); |
Christopher Faulet | b1bb069 | 2020-11-25 16:47:30 +0100 | [diff] [blame] | 2043 | last_read = 0; |
| 2044 | must_read = ((cs && IS_HTX_CS(cs)) ? htx_is_empty(htxbuf(&check->bi)) : !b_data(&check->bi)); |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 2045 | break; |
| 2046 | case TCPCHK_ACT_SEND: |
| 2047 | check->current_step = rule; |
| 2048 | eval_ret = tcpcheck_eval_send(check, rule); |
| 2049 | must_read = 1; |
| 2050 | break; |
| 2051 | case TCPCHK_ACT_EXPECT: |
| 2052 | check->current_step = rule; |
| 2053 | if (must_read) { |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 2054 | eval_ret = tcpcheck_eval_recv(check, rule); |
| 2055 | if (eval_ret == TCPCHK_EVAL_STOP) |
| 2056 | goto out_end_tcpcheck; |
| 2057 | else if (eval_ret == TCPCHK_EVAL_WAIT) |
| 2058 | goto out; |
| 2059 | last_read = ((conn->flags & CO_FL_ERROR) || (cs->flags & (CS_FL_ERROR|CS_FL_EOS))); |
| 2060 | must_read = 0; |
| 2061 | } |
| 2062 | |
| 2063 | eval_ret = ((check->tcpcheck_rules->flags & TCPCHK_RULES_PROTO_CHK) == TCPCHK_RULES_HTTP_CHK |
| 2064 | ? tcpcheck_eval_expect_http(check, rule, last_read) |
| 2065 | : tcpcheck_eval_expect(check, rule, last_read)); |
| 2066 | |
| 2067 | if (eval_ret == TCPCHK_EVAL_WAIT) { |
| 2068 | check->current_step = rule->expect.head; |
| 2069 | if (!(check->wait_list.events & SUB_RETRY_RECV)) |
| 2070 | conn->mux->subscribe(cs, SUB_RETRY_RECV, &check->wait_list); |
| 2071 | } |
| 2072 | break; |
| 2073 | case TCPCHK_ACT_ACTION_KW: |
| 2074 | /* Don't update the current step */ |
| 2075 | eval_ret = tcpcheck_eval_action_kw(check, rule); |
| 2076 | break; |
| 2077 | default: |
| 2078 | /* Otherwise, just go to the next one and don't update |
| 2079 | * the current step |
| 2080 | */ |
| 2081 | eval_ret = TCPCHK_EVAL_CONTINUE; |
| 2082 | break; |
| 2083 | } |
| 2084 | |
| 2085 | switch (eval_ret) { |
| 2086 | case TCPCHK_EVAL_CONTINUE: |
| 2087 | break; |
| 2088 | case TCPCHK_EVAL_WAIT: |
| 2089 | goto out; |
| 2090 | case TCPCHK_EVAL_STOP: |
| 2091 | goto out_end_tcpcheck; |
| 2092 | } |
| 2093 | } |
| 2094 | |
| 2095 | /* All rules was evaluated */ |
| 2096 | if (check->current_step) { |
| 2097 | rule = check->current_step; |
| 2098 | |
| 2099 | if (rule->action == TCPCHK_ACT_EXPECT) { |
| 2100 | struct buffer *msg; |
| 2101 | enum healthcheck_status status; |
| 2102 | |
| 2103 | if (check->server && |
| 2104 | (check->server->proxy->options & PR_O_DISABLE404) && |
| 2105 | (check->server->next_state != SRV_ST_STOPPED) && |
| 2106 | (check->code == 404)) { |
| 2107 | set_server_check_status(check, HCHK_STATUS_L7OKCD, NULL); |
| 2108 | goto out_end_tcpcheck; |
| 2109 | } |
| 2110 | |
| 2111 | msg = alloc_trash_chunk(); |
| 2112 | if (msg) |
| 2113 | tcpcheck_expect_onsuccess_message(msg, check, rule, IST_NULL); |
| 2114 | status = ((rule->expect.ok_status != HCHK_STATUS_UNKNOWN) ? rule->expect.ok_status : HCHK_STATUS_L7OKD); |
| 2115 | set_server_check_status(check, status, (msg ? b_head(msg) : "(tcp-check)")); |
| 2116 | free_trash_chunk(msg); |
| 2117 | } |
| 2118 | else if (rule->action == TCPCHK_ACT_CONNECT) { |
| 2119 | const char *msg = ((rule->connect.options & TCPCHK_OPT_IMPLICIT) ? NULL : "(tcp-check)"); |
| 2120 | enum healthcheck_status status = HCHK_STATUS_L4OK; |
| 2121 | #ifdef USE_OPENSSL |
| 2122 | if (ssl_sock_is_ssl(conn)) |
| 2123 | status = HCHK_STATUS_L6OK; |
| 2124 | #endif |
| 2125 | set_server_check_status(check, status, msg); |
| 2126 | } |
Christopher Faulet | 8d4977a | 2021-01-05 16:56:07 +0100 | [diff] [blame] | 2127 | else |
| 2128 | set_server_check_status(check, HCHK_STATUS_L7OKD, "(tcp-check)"); |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 2129 | } |
| 2130 | else |
| 2131 | set_server_check_status(check, HCHK_STATUS_L7OKD, "(tcp-check)"); |
| 2132 | |
| 2133 | out_end_tcpcheck: |
| 2134 | if ((conn && conn->flags & CO_FL_ERROR) || (cs && cs->flags & CS_FL_ERROR)) |
| 2135 | chk_report_conn_err(check, errno, 0); |
| 2136 | |
Christopher Faulet | b381a50 | 2020-11-25 13:47:00 +0100 | [diff] [blame] | 2137 | /* the tcpcheck is finished, release in/out buffer now */ |
| 2138 | check_release_buf(check, &check->bi); |
| 2139 | check_release_buf(check, &check->bo); |
| 2140 | |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 2141 | out: |
| 2142 | return retcode; |
| 2143 | } |
| 2144 | |
| 2145 | |
| 2146 | /**************************************************************************/ |
| 2147 | /******************* Internals to parse tcp-check rules *******************/ |
| 2148 | /**************************************************************************/ |
| 2149 | struct action_kw_list tcp_check_keywords = { |
| 2150 | .list = LIST_HEAD_INIT(tcp_check_keywords.list), |
| 2151 | }; |
| 2152 | |
| 2153 | /* Creates a tcp-check rule resulting from parsing a custom keyword. NULL is |
| 2154 | * returned on error. |
| 2155 | */ |
| 2156 | struct tcpcheck_rule *parse_tcpcheck_action(char **args, int cur_arg, struct proxy *px, |
| 2157 | struct list *rules, struct action_kw *kw, |
| 2158 | const char *file, int line, char **errmsg) |
| 2159 | { |
| 2160 | struct tcpcheck_rule *chk = NULL; |
| 2161 | struct act_rule *actrule = NULL; |
| 2162 | |
| 2163 | actrule = calloc(1, sizeof(*actrule)); |
| 2164 | if (!actrule) { |
| 2165 | memprintf(errmsg, "out of memory"); |
| 2166 | goto error; |
| 2167 | } |
| 2168 | actrule->kw = kw; |
| 2169 | actrule->from = ACT_F_TCP_CHK; |
| 2170 | |
| 2171 | cur_arg++; |
| 2172 | if (kw->parse((const char **)args, &cur_arg, px, actrule, errmsg) == ACT_RET_PRS_ERR) { |
| 2173 | memprintf(errmsg, "'%s' : %s", kw->kw, *errmsg); |
| 2174 | goto error; |
| 2175 | } |
| 2176 | |
| 2177 | chk = calloc(1, sizeof(*chk)); |
| 2178 | if (!chk) { |
| 2179 | memprintf(errmsg, "out of memory"); |
| 2180 | goto error; |
| 2181 | } |
| 2182 | chk->action = TCPCHK_ACT_ACTION_KW; |
| 2183 | chk->action_kw.rule = actrule; |
| 2184 | return chk; |
| 2185 | |
| 2186 | error: |
| 2187 | free(actrule); |
| 2188 | return NULL; |
| 2189 | } |
| 2190 | |
| 2191 | /* Parses and creates a tcp-check connect or an http-check connect rule. NULL is |
| 2192 | * returned on error. |
| 2193 | */ |
| 2194 | struct tcpcheck_rule *parse_tcpcheck_connect(char **args, int cur_arg, struct proxy *px, struct list *rules, |
| 2195 | const char *file, int line, char **errmsg) |
| 2196 | { |
| 2197 | struct tcpcheck_rule *chk = NULL; |
| 2198 | struct sockaddr_storage *sk = NULL; |
| 2199 | char *comment = NULL, *sni = NULL, *alpn = NULL; |
| 2200 | struct sample_expr *port_expr = NULL; |
| 2201 | const struct mux_proto_list *mux_proto = NULL; |
| 2202 | unsigned short conn_opts = 0; |
| 2203 | long port = 0; |
| 2204 | int alpn_len = 0; |
| 2205 | |
| 2206 | list_for_each_entry(chk, rules, list) { |
| 2207 | if (chk->action == TCPCHK_ACT_CONNECT) |
| 2208 | break; |
| 2209 | if (chk->action == TCPCHK_ACT_COMMENT || |
| 2210 | chk->action == TCPCHK_ACT_ACTION_KW || |
| 2211 | (chk->action == TCPCHK_ACT_SEND && (chk->send.http.flags & TCPCHK_SND_HTTP_FROM_OPT))) |
| 2212 | continue; |
| 2213 | |
| 2214 | memprintf(errmsg, "first step MUST also be a 'connect', " |
| 2215 | "optionally preceded by a 'set-var', an 'unset-var' or a 'comment', " |
| 2216 | "when there is a 'connect' step in the tcp-check ruleset"); |
| 2217 | goto error; |
| 2218 | } |
| 2219 | |
| 2220 | cur_arg++; |
| 2221 | while (*(args[cur_arg])) { |
| 2222 | if (strcmp(args[cur_arg], "default") == 0) |
| 2223 | conn_opts |= TCPCHK_OPT_DEFAULT_CONNECT; |
| 2224 | else if (strcmp(args[cur_arg], "addr") == 0) { |
| 2225 | int port1, port2; |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 2226 | |
| 2227 | if (!*(args[cur_arg+1])) { |
| 2228 | memprintf(errmsg, "'%s' expects <ipv4|ipv6> as argument.", args[cur_arg]); |
| 2229 | goto error; |
| 2230 | } |
| 2231 | |
Willy Tarreau | 65ec4e3 | 2020-09-16 19:17:08 +0200 | [diff] [blame] | 2232 | sk = str2sa_range(args[cur_arg+1], NULL, &port1, &port2, NULL, NULL, |
| 2233 | errmsg, NULL, NULL, PA_O_RESOLVE | PA_O_PORT_OK | PA_O_STREAM | PA_O_CONNECT); |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 2234 | if (!sk) { |
| 2235 | memprintf(errmsg, "'%s' : %s.", args[cur_arg], *errmsg); |
| 2236 | goto error; |
| 2237 | } |
| 2238 | |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 2239 | cur_arg++; |
| 2240 | } |
| 2241 | else if (strcmp(args[cur_arg], "port") == 0) { |
| 2242 | const char *p, *end; |
| 2243 | |
| 2244 | if (!*(args[cur_arg+1])) { |
| 2245 | memprintf(errmsg, "'%s' expects a port number or a sample expression as argument.", args[cur_arg]); |
| 2246 | goto error; |
| 2247 | } |
| 2248 | cur_arg++; |
| 2249 | |
| 2250 | port = 0; |
| 2251 | release_sample_expr(port_expr); |
| 2252 | p = args[cur_arg]; end = p + strlen(p); |
| 2253 | port = read_uint(&p, end); |
| 2254 | if (p != end) { |
| 2255 | int idx = 0; |
| 2256 | |
| 2257 | px->conf.args.ctx = ARGC_SRV; |
| 2258 | port_expr = sample_parse_expr((char *[]){args[cur_arg], NULL}, &idx, |
| 2259 | file, line, errmsg, &px->conf.args, NULL); |
| 2260 | |
| 2261 | if (!port_expr) { |
| 2262 | memprintf(errmsg, "error detected while parsing port expression : %s", *errmsg); |
| 2263 | goto error; |
| 2264 | } |
| 2265 | if (!(port_expr->fetch->val & SMP_VAL_BE_CHK_RUL)) { |
| 2266 | memprintf(errmsg, "error detected while parsing port expression : " |
| 2267 | " fetch method '%s' extracts information from '%s', " |
| 2268 | "none of which is available here.\n", |
| 2269 | args[cur_arg], sample_src_names(port_expr->fetch->use)); |
| 2270 | goto error; |
| 2271 | } |
| 2272 | px->http_needed |= !!(port_expr->fetch->use & SMP_USE_HTTP_ANY); |
| 2273 | } |
| 2274 | else if (port > 65535 || port < 1) { |
| 2275 | memprintf(errmsg, "expects a valid TCP port (from range 1 to 65535) or a sample expression, got %s.", |
| 2276 | args[cur_arg]); |
| 2277 | goto error; |
| 2278 | } |
| 2279 | } |
| 2280 | else if (strcmp(args[cur_arg], "proto") == 0) { |
| 2281 | if (!*(args[cur_arg+1])) { |
| 2282 | memprintf(errmsg, "'%s' expects a MUX protocol as argument.", args[cur_arg]); |
| 2283 | goto error; |
| 2284 | } |
Tim Duesterhus | dcf753a | 2021-03-04 17:31:47 +0100 | [diff] [blame] | 2285 | mux_proto = get_mux_proto(ist(args[cur_arg + 1])); |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 2286 | if (!mux_proto) { |
| 2287 | memprintf(errmsg, "'%s' : unknown MUX protocol '%s'.", args[cur_arg], args[cur_arg+1]); |
| 2288 | goto error; |
| 2289 | } |
Amaury Denoyelle | 90eb93f | 2020-11-13 12:34:58 +0100 | [diff] [blame] | 2290 | |
| 2291 | if (strcmp(args[0], "tcp-check") == 0 && mux_proto->mode != PROTO_MODE_TCP) { |
| 2292 | memprintf(errmsg, "'%s' : invalid MUX protocol '%s' for tcp-check", args[cur_arg], args[cur_arg+1]); |
| 2293 | goto error; |
| 2294 | } |
| 2295 | else if (strcmp(args[0], "http-check") == 0 && mux_proto->mode != PROTO_MODE_HTTP) { |
| 2296 | memprintf(errmsg, "'%s' : invalid MUX protocol '%s' for http-check", args[cur_arg], args[cur_arg+1]); |
| 2297 | goto error; |
| 2298 | } |
| 2299 | |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 2300 | cur_arg++; |
| 2301 | } |
| 2302 | else if (strcmp(args[cur_arg], "comment") == 0) { |
| 2303 | if (!*(args[cur_arg+1])) { |
| 2304 | memprintf(errmsg, "'%s' expects a string as argument.", args[cur_arg]); |
| 2305 | goto error; |
| 2306 | } |
| 2307 | cur_arg++; |
| 2308 | free(comment); |
| 2309 | comment = strdup(args[cur_arg]); |
| 2310 | if (!comment) { |
| 2311 | memprintf(errmsg, "out of memory"); |
| 2312 | goto error; |
| 2313 | } |
| 2314 | } |
| 2315 | else if (strcmp(args[cur_arg], "send-proxy") == 0) |
| 2316 | conn_opts |= TCPCHK_OPT_SEND_PROXY; |
| 2317 | else if (strcmp(args[cur_arg], "via-socks4") == 0) |
| 2318 | conn_opts |= TCPCHK_OPT_SOCKS4; |
| 2319 | else if (strcmp(args[cur_arg], "linger") == 0) |
| 2320 | conn_opts |= TCPCHK_OPT_LINGER; |
| 2321 | #ifdef USE_OPENSSL |
| 2322 | else if (strcmp(args[cur_arg], "ssl") == 0) { |
| 2323 | px->options |= PR_O_TCPCHK_SSL; |
| 2324 | conn_opts |= TCPCHK_OPT_SSL; |
| 2325 | } |
| 2326 | else if (strcmp(args[cur_arg], "sni") == 0) { |
| 2327 | if (!*(args[cur_arg+1])) { |
| 2328 | memprintf(errmsg, "'%s' expects a string as argument.", args[cur_arg]); |
| 2329 | goto error; |
| 2330 | } |
| 2331 | cur_arg++; |
| 2332 | free(sni); |
| 2333 | sni = strdup(args[cur_arg]); |
| 2334 | if (!sni) { |
| 2335 | memprintf(errmsg, "out of memory"); |
| 2336 | goto error; |
| 2337 | } |
| 2338 | } |
| 2339 | else if (strcmp(args[cur_arg], "alpn") == 0) { |
| 2340 | #ifdef TLSEXT_TYPE_application_layer_protocol_negotiation |
| 2341 | free(alpn); |
| 2342 | if (ssl_sock_parse_alpn(args[cur_arg + 1], &alpn, &alpn_len, errmsg)) { |
| 2343 | memprintf(errmsg, "'%s' : %s", args[cur_arg], *errmsg); |
| 2344 | goto error; |
| 2345 | } |
| 2346 | cur_arg++; |
| 2347 | #else |
| 2348 | memprintf(errmsg, "'%s' : library does not support TLS ALPN extension.", args[cur_arg]); |
| 2349 | goto error; |
| 2350 | #endif |
| 2351 | } |
| 2352 | #endif /* USE_OPENSSL */ |
| 2353 | |
| 2354 | else { |
| 2355 | memprintf(errmsg, "expects 'comment', 'port', 'addr', 'send-proxy'" |
| 2356 | #ifdef USE_OPENSSL |
| 2357 | ", 'ssl', 'sni', 'alpn'" |
| 2358 | #endif /* USE_OPENSSL */ |
| 2359 | " or 'via-socks4', 'linger', 'default' but got '%s' as argument.", |
| 2360 | args[cur_arg]); |
| 2361 | goto error; |
| 2362 | } |
| 2363 | cur_arg++; |
| 2364 | } |
| 2365 | |
| 2366 | chk = calloc(1, sizeof(*chk)); |
| 2367 | if (!chk) { |
| 2368 | memprintf(errmsg, "out of memory"); |
| 2369 | goto error; |
| 2370 | } |
| 2371 | chk->action = TCPCHK_ACT_CONNECT; |
| 2372 | chk->comment = comment; |
| 2373 | chk->connect.port = port; |
| 2374 | chk->connect.options = conn_opts; |
| 2375 | chk->connect.sni = sni; |
| 2376 | chk->connect.alpn = alpn; |
| 2377 | chk->connect.alpn_len= alpn_len; |
| 2378 | chk->connect.port_expr= port_expr; |
| 2379 | chk->connect.mux_proto= mux_proto; |
| 2380 | if (sk) |
| 2381 | chk->connect.addr = *sk; |
| 2382 | return chk; |
| 2383 | |
| 2384 | error: |
| 2385 | free(alpn); |
| 2386 | free(sni); |
| 2387 | free(comment); |
| 2388 | release_sample_expr(port_expr); |
| 2389 | return NULL; |
| 2390 | } |
| 2391 | |
| 2392 | /* Parses and creates a tcp-check send rule. NULL is returned on error */ |
| 2393 | struct tcpcheck_rule *parse_tcpcheck_send(char **args, int cur_arg, struct proxy *px, struct list *rules, |
| 2394 | const char *file, int line, char **errmsg) |
| 2395 | { |
| 2396 | struct tcpcheck_rule *chk = NULL; |
| 2397 | char *comment = NULL, *data = NULL; |
| 2398 | enum tcpcheck_send_type type = TCPCHK_SEND_UNDEF; |
| 2399 | |
| 2400 | if (strcmp(args[cur_arg], "send-binary-lf") == 0) |
| 2401 | type = TCPCHK_SEND_BINARY_LF; |
| 2402 | else if (strcmp(args[cur_arg], "send-binary") == 0) |
| 2403 | type = TCPCHK_SEND_BINARY; |
| 2404 | else if (strcmp(args[cur_arg], "send-lf") == 0) |
| 2405 | type = TCPCHK_SEND_STRING_LF; |
| 2406 | else if (strcmp(args[cur_arg], "send") == 0) |
| 2407 | type = TCPCHK_SEND_STRING; |
| 2408 | |
| 2409 | if (!*(args[cur_arg+1])) { |
| 2410 | memprintf(errmsg, "'%s' expects a %s as argument", |
| 2411 | (type == TCPCHK_SEND_BINARY ? "binary string": "string"), args[cur_arg]); |
| 2412 | goto error; |
| 2413 | } |
| 2414 | |
| 2415 | data = args[cur_arg+1]; |
| 2416 | |
| 2417 | cur_arg += 2; |
| 2418 | while (*(args[cur_arg])) { |
| 2419 | if (strcmp(args[cur_arg], "comment") == 0) { |
| 2420 | if (!*(args[cur_arg+1])) { |
| 2421 | memprintf(errmsg, "'%s' expects a string as argument.", args[cur_arg]); |
| 2422 | goto error; |
| 2423 | } |
| 2424 | cur_arg++; |
| 2425 | free(comment); |
| 2426 | comment = strdup(args[cur_arg]); |
| 2427 | if (!comment) { |
| 2428 | memprintf(errmsg, "out of memory"); |
| 2429 | goto error; |
| 2430 | } |
| 2431 | } |
| 2432 | else { |
| 2433 | memprintf(errmsg, "expects 'comment' but got '%s' as argument.", |
| 2434 | args[cur_arg]); |
| 2435 | goto error; |
| 2436 | } |
| 2437 | cur_arg++; |
| 2438 | } |
| 2439 | |
| 2440 | chk = calloc(1, sizeof(*chk)); |
| 2441 | if (!chk) { |
| 2442 | memprintf(errmsg, "out of memory"); |
| 2443 | goto error; |
| 2444 | } |
| 2445 | chk->action = TCPCHK_ACT_SEND; |
| 2446 | chk->comment = comment; |
| 2447 | chk->send.type = type; |
| 2448 | |
| 2449 | switch (chk->send.type) { |
| 2450 | case TCPCHK_SEND_STRING: |
Tim Duesterhus | dcf753a | 2021-03-04 17:31:47 +0100 | [diff] [blame] | 2451 | chk->send.data = ist(strdup(data)); |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 2452 | if (!isttest(chk->send.data)) { |
| 2453 | memprintf(errmsg, "out of memory"); |
| 2454 | goto error; |
| 2455 | } |
| 2456 | break; |
| 2457 | case TCPCHK_SEND_BINARY: { |
| 2458 | int len = chk->send.data.len; |
| 2459 | if (parse_binary(data, &chk->send.data.ptr, &len, errmsg) == 0) { |
| 2460 | memprintf(errmsg, "'%s' invalid binary string (%s).\n", data, *errmsg); |
| 2461 | goto error; |
| 2462 | } |
| 2463 | chk->send.data.len = len; |
| 2464 | break; |
| 2465 | } |
| 2466 | case TCPCHK_SEND_STRING_LF: |
| 2467 | case TCPCHK_SEND_BINARY_LF: |
| 2468 | LIST_INIT(&chk->send.fmt); |
| 2469 | px->conf.args.ctx = ARGC_SRV; |
| 2470 | if (!parse_logformat_string(data, px, &chk->send.fmt, 0, SMP_VAL_BE_CHK_RUL, errmsg)) { |
| 2471 | memprintf(errmsg, "'%s' invalid log-format string (%s).\n", data, *errmsg); |
| 2472 | goto error; |
| 2473 | } |
| 2474 | break; |
| 2475 | case TCPCHK_SEND_HTTP: |
| 2476 | case TCPCHK_SEND_UNDEF: |
| 2477 | goto error; |
| 2478 | } |
| 2479 | |
| 2480 | return chk; |
| 2481 | |
| 2482 | error: |
| 2483 | free(chk); |
| 2484 | free(comment); |
| 2485 | return NULL; |
| 2486 | } |
| 2487 | |
| 2488 | /* Parses and creates a http-check send rule. NULL is returned on error */ |
| 2489 | struct tcpcheck_rule *parse_tcpcheck_send_http(char **args, int cur_arg, struct proxy *px, struct list *rules, |
| 2490 | const char *file, int line, char **errmsg) |
| 2491 | { |
| 2492 | struct tcpcheck_rule *chk = NULL; |
| 2493 | struct tcpcheck_http_hdr *hdr = NULL; |
| 2494 | struct http_hdr hdrs[global.tune.max_http_hdr]; |
| 2495 | char *meth = NULL, *uri = NULL, *vsn = NULL; |
| 2496 | char *body = NULL, *comment = NULL; |
| 2497 | unsigned int flags = 0; |
| 2498 | int i = 0, host_hdr = -1; |
| 2499 | |
| 2500 | cur_arg++; |
| 2501 | while (*(args[cur_arg])) { |
| 2502 | if (strcmp(args[cur_arg], "meth") == 0) { |
| 2503 | if (!*(args[cur_arg+1])) { |
| 2504 | memprintf(errmsg, "'%s' expects a string as argument.", args[cur_arg]); |
| 2505 | goto error; |
| 2506 | } |
| 2507 | cur_arg++; |
| 2508 | meth = args[cur_arg]; |
| 2509 | } |
| 2510 | else if (strcmp(args[cur_arg], "uri") == 0 || strcmp(args[cur_arg], "uri-lf") == 0) { |
| 2511 | if (!*(args[cur_arg+1])) { |
| 2512 | memprintf(errmsg, "'%s' expects a string as argument.", args[cur_arg]); |
| 2513 | goto error; |
| 2514 | } |
| 2515 | flags &= ~TCPCHK_SND_HTTP_FL_URI_FMT; |
| 2516 | if (strcmp(args[cur_arg], "uri-lf") == 0) |
| 2517 | flags |= TCPCHK_SND_HTTP_FL_URI_FMT; |
| 2518 | cur_arg++; |
| 2519 | uri = args[cur_arg]; |
| 2520 | } |
| 2521 | else if (strcmp(args[cur_arg], "ver") == 0) { |
| 2522 | if (!*(args[cur_arg+1])) { |
| 2523 | memprintf(errmsg, "'%s' expects a string as argument.", args[cur_arg]); |
| 2524 | goto error; |
| 2525 | } |
| 2526 | cur_arg++; |
| 2527 | vsn = args[cur_arg]; |
| 2528 | } |
| 2529 | else if (strcmp(args[cur_arg], "hdr") == 0) { |
| 2530 | if (!*args[cur_arg+1] || !*args[cur_arg+2]) { |
| 2531 | memprintf(errmsg, "'%s' expects <name> and <value> as arguments", args[cur_arg]); |
| 2532 | goto error; |
| 2533 | } |
| 2534 | |
| 2535 | if (strcasecmp(args[cur_arg+1], "host") == 0) { |
| 2536 | if (host_hdr >= 0) { |
| 2537 | memprintf(errmsg, "'%s' header already defined (previous value is '%s')", |
| 2538 | args[cur_arg+1], istptr(hdrs[host_hdr].v)); |
| 2539 | goto error; |
| 2540 | } |
| 2541 | host_hdr = i; |
| 2542 | } |
Amaury Denoyelle | 6d975f0 | 2020-12-22 14:08:52 +0100 | [diff] [blame] | 2543 | else if (strcasecmp(args[cur_arg+1], "content-length") == 0 || |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 2544 | strcasecmp(args[cur_arg+1], "transfer-encoding") == 0) |
| 2545 | goto skip_hdr; |
| 2546 | |
Tim Duesterhus | dcf753a | 2021-03-04 17:31:47 +0100 | [diff] [blame] | 2547 | hdrs[i].n = ist(args[cur_arg + 1]); |
| 2548 | hdrs[i].v = ist(args[cur_arg + 2]); |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 2549 | i++; |
| 2550 | skip_hdr: |
| 2551 | cur_arg += 2; |
| 2552 | } |
| 2553 | else if (strcmp(args[cur_arg], "body") == 0 || strcmp(args[cur_arg], "body-lf") == 0) { |
| 2554 | if (!*(args[cur_arg+1])) { |
| 2555 | memprintf(errmsg, "'%s' expects a string as argument.", args[cur_arg]); |
| 2556 | goto error; |
| 2557 | } |
| 2558 | flags &= ~TCPCHK_SND_HTTP_FL_BODY_FMT; |
| 2559 | if (strcmp(args[cur_arg], "body-lf") == 0) |
| 2560 | flags |= TCPCHK_SND_HTTP_FL_BODY_FMT; |
| 2561 | cur_arg++; |
| 2562 | body = args[cur_arg]; |
| 2563 | } |
| 2564 | else if (strcmp(args[cur_arg], "comment") == 0) { |
| 2565 | if (!*(args[cur_arg+1])) { |
| 2566 | memprintf(errmsg, "'%s' expects a string as argument.", args[cur_arg]); |
| 2567 | goto error; |
| 2568 | } |
| 2569 | cur_arg++; |
| 2570 | free(comment); |
| 2571 | comment = strdup(args[cur_arg]); |
| 2572 | if (!comment) { |
| 2573 | memprintf(errmsg, "out of memory"); |
| 2574 | goto error; |
| 2575 | } |
| 2576 | } |
| 2577 | else { |
| 2578 | memprintf(errmsg, "expects 'comment', 'meth', 'uri', 'uri-lf', 'ver', 'hdr', 'body' or 'body-lf'" |
| 2579 | " but got '%s' as argument.", args[cur_arg]); |
| 2580 | goto error; |
| 2581 | } |
| 2582 | cur_arg++; |
| 2583 | } |
| 2584 | |
| 2585 | hdrs[i].n = hdrs[i].v = IST_NULL; |
| 2586 | |
| 2587 | chk = calloc(1, sizeof(*chk)); |
| 2588 | if (!chk) { |
| 2589 | memprintf(errmsg, "out of memory"); |
| 2590 | goto error; |
| 2591 | } |
| 2592 | chk->action = TCPCHK_ACT_SEND; |
| 2593 | chk->comment = comment; comment = NULL; |
| 2594 | chk->send.type = TCPCHK_SEND_HTTP; |
| 2595 | chk->send.http.flags = flags; |
| 2596 | LIST_INIT(&chk->send.http.hdrs); |
| 2597 | |
| 2598 | if (meth) { |
| 2599 | chk->send.http.meth.meth = find_http_meth(meth, strlen(meth)); |
| 2600 | chk->send.http.meth.str.area = strdup(meth); |
| 2601 | chk->send.http.meth.str.data = strlen(meth); |
| 2602 | if (!chk->send.http.meth.str.area) { |
| 2603 | memprintf(errmsg, "out of memory"); |
| 2604 | goto error; |
| 2605 | } |
| 2606 | } |
| 2607 | if (uri) { |
| 2608 | if (chk->send.http.flags & TCPCHK_SND_HTTP_FL_URI_FMT) { |
| 2609 | LIST_INIT(&chk->send.http.uri_fmt); |
| 2610 | px->conf.args.ctx = ARGC_SRV; |
| 2611 | if (!parse_logformat_string(uri, px, &chk->send.http.uri_fmt, 0, SMP_VAL_BE_CHK_RUL, errmsg)) { |
| 2612 | memprintf(errmsg, "'%s' invalid log-format string (%s).\n", uri, *errmsg); |
| 2613 | goto error; |
| 2614 | } |
| 2615 | } |
| 2616 | else { |
Tim Duesterhus | dcf753a | 2021-03-04 17:31:47 +0100 | [diff] [blame] | 2617 | chk->send.http.uri = ist(strdup(uri)); |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 2618 | if (!isttest(chk->send.http.uri)) { |
| 2619 | memprintf(errmsg, "out of memory"); |
| 2620 | goto error; |
| 2621 | } |
| 2622 | } |
| 2623 | } |
| 2624 | if (vsn) { |
Tim Duesterhus | dcf753a | 2021-03-04 17:31:47 +0100 | [diff] [blame] | 2625 | chk->send.http.vsn = ist(strdup(vsn)); |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 2626 | if (!isttest(chk->send.http.vsn)) { |
| 2627 | memprintf(errmsg, "out of memory"); |
| 2628 | goto error; |
| 2629 | } |
| 2630 | } |
| 2631 | for (i = 0; istlen(hdrs[i].n); i++) { |
| 2632 | hdr = calloc(1, sizeof(*hdr)); |
| 2633 | if (!hdr) { |
| 2634 | memprintf(errmsg, "out of memory"); |
| 2635 | goto error; |
| 2636 | } |
| 2637 | LIST_INIT(&hdr->value); |
| 2638 | hdr->name = istdup(hdrs[i].n); |
| 2639 | if (!isttest(hdr->name)) { |
| 2640 | memprintf(errmsg, "out of memory"); |
| 2641 | goto error; |
| 2642 | } |
| 2643 | |
| 2644 | ist0(hdrs[i].v); |
| 2645 | if (!parse_logformat_string(istptr(hdrs[i].v), px, &hdr->value, 0, SMP_VAL_BE_CHK_RUL, errmsg)) |
| 2646 | goto error; |
| 2647 | LIST_ADDQ(&chk->send.http.hdrs, &hdr->list); |
| 2648 | hdr = NULL; |
| 2649 | } |
| 2650 | |
| 2651 | if (body) { |
| 2652 | if (chk->send.http.flags & TCPCHK_SND_HTTP_FL_BODY_FMT) { |
| 2653 | LIST_INIT(&chk->send.http.body_fmt); |
| 2654 | px->conf.args.ctx = ARGC_SRV; |
| 2655 | if (!parse_logformat_string(body, px, &chk->send.http.body_fmt, 0, SMP_VAL_BE_CHK_RUL, errmsg)) { |
| 2656 | memprintf(errmsg, "'%s' invalid log-format string (%s).\n", body, *errmsg); |
| 2657 | goto error; |
| 2658 | } |
| 2659 | } |
| 2660 | else { |
Tim Duesterhus | dcf753a | 2021-03-04 17:31:47 +0100 | [diff] [blame] | 2661 | chk->send.http.body = ist(strdup(body)); |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 2662 | if (!isttest(chk->send.http.body)) { |
| 2663 | memprintf(errmsg, "out of memory"); |
| 2664 | goto error; |
| 2665 | } |
| 2666 | } |
| 2667 | } |
| 2668 | |
| 2669 | return chk; |
| 2670 | |
| 2671 | error: |
| 2672 | free_tcpcheck_http_hdr(hdr); |
| 2673 | free_tcpcheck(chk, 0); |
| 2674 | free(comment); |
| 2675 | return NULL; |
| 2676 | } |
| 2677 | |
| 2678 | /* Parses and creates a http-check comment rule. NULL is returned on error */ |
| 2679 | struct tcpcheck_rule *parse_tcpcheck_comment(char **args, int cur_arg, struct proxy *px, struct list *rules, |
| 2680 | const char *file, int line, char **errmsg) |
| 2681 | { |
| 2682 | struct tcpcheck_rule *chk = NULL; |
| 2683 | char *comment = NULL; |
| 2684 | |
| 2685 | if (!*(args[cur_arg+1])) { |
| 2686 | memprintf(errmsg, "expects a string as argument"); |
| 2687 | goto error; |
| 2688 | } |
| 2689 | cur_arg++; |
| 2690 | comment = strdup(args[cur_arg]); |
| 2691 | if (!comment) { |
| 2692 | memprintf(errmsg, "out of memory"); |
| 2693 | goto error; |
| 2694 | } |
| 2695 | |
| 2696 | chk = calloc(1, sizeof(*chk)); |
| 2697 | if (!chk) { |
| 2698 | memprintf(errmsg, "out of memory"); |
| 2699 | goto error; |
| 2700 | } |
| 2701 | chk->action = TCPCHK_ACT_COMMENT; |
| 2702 | chk->comment = comment; |
| 2703 | return chk; |
| 2704 | |
| 2705 | error: |
| 2706 | free(comment); |
| 2707 | return NULL; |
| 2708 | } |
| 2709 | |
| 2710 | /* Parses and creates a tcp-check or an http-check expect rule. NULL is returned |
| 2711 | * on error. <proto> is set to the right protocol flags (covered by the |
| 2712 | * TCPCHK_RULES_PROTO_CHK mask). |
| 2713 | */ |
| 2714 | struct tcpcheck_rule *parse_tcpcheck_expect(char **args, int cur_arg, struct proxy *px, |
| 2715 | struct list *rules, unsigned int proto, |
| 2716 | const char *file, int line, char **errmsg) |
| 2717 | { |
| 2718 | struct tcpcheck_rule *prev_check, *chk = NULL; |
| 2719 | struct sample_expr *status_expr = NULL; |
| 2720 | char *on_success_msg, *on_error_msg, *comment, *pattern, *npat, *vpat; |
| 2721 | enum tcpcheck_expect_type type = TCPCHK_EXPECT_UNDEF; |
| 2722 | enum healthcheck_status ok_st = HCHK_STATUS_UNKNOWN; |
| 2723 | enum healthcheck_status err_st = HCHK_STATUS_UNKNOWN; |
| 2724 | enum healthcheck_status tout_st = HCHK_STATUS_UNKNOWN; |
| 2725 | unsigned int flags = 0; |
| 2726 | long min_recv = -1; |
| 2727 | int inverse = 0; |
| 2728 | |
| 2729 | on_success_msg = on_error_msg = comment = pattern = npat = vpat = NULL; |
| 2730 | if (!*(args[cur_arg+1])) { |
| 2731 | memprintf(errmsg, "expects at least a matching pattern as arguments"); |
| 2732 | goto error; |
| 2733 | } |
| 2734 | |
| 2735 | cur_arg++; |
| 2736 | while (*(args[cur_arg])) { |
| 2737 | int in_pattern = 0; |
| 2738 | |
| 2739 | rescan: |
| 2740 | if (strcmp(args[cur_arg], "min-recv") == 0) { |
| 2741 | if (in_pattern) { |
| 2742 | memprintf(errmsg, "[!] not supported with '%s'", args[cur_arg]); |
| 2743 | goto error; |
| 2744 | } |
| 2745 | if (!*(args[cur_arg+1])) { |
| 2746 | memprintf(errmsg, "'%s' expects a integer as argument", args[cur_arg]); |
| 2747 | goto error; |
| 2748 | } |
Christopher Faulet | bb9fb8b | 2020-11-25 17:20:57 +0100 | [diff] [blame] | 2749 | /* Use an signed integer here because of bufsize */ |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 2750 | cur_arg++; |
| 2751 | min_recv = atol(args[cur_arg]); |
| 2752 | if (min_recv < -1 || min_recv > INT_MAX) { |
| 2753 | memprintf(errmsg, "'%s' expects -1 or an integer from 0 to INT_MAX" , args[cur_arg-1]); |
| 2754 | goto error; |
| 2755 | } |
| 2756 | } |
| 2757 | else if (*(args[cur_arg]) == '!') { |
| 2758 | in_pattern = 1; |
| 2759 | while (*(args[cur_arg]) == '!') { |
| 2760 | inverse = !inverse; |
| 2761 | args[cur_arg]++; |
| 2762 | } |
| 2763 | if (!*(args[cur_arg])) |
| 2764 | cur_arg++; |
| 2765 | goto rescan; |
| 2766 | } |
| 2767 | else if (strcmp(args[cur_arg], "string") == 0 || strcmp(args[cur_arg], "rstring") == 0) { |
| 2768 | if (type != TCPCHK_EXPECT_UNDEF) { |
| 2769 | memprintf(errmsg, "only on pattern expected"); |
| 2770 | goto error; |
| 2771 | } |
| 2772 | if (proto != TCPCHK_RULES_HTTP_CHK) |
| 2773 | type = ((*(args[cur_arg]) == 's') ? TCPCHK_EXPECT_STRING : TCPCHK_EXPECT_STRING_REGEX); |
| 2774 | else |
| 2775 | type = ((*(args[cur_arg]) == 's') ? TCPCHK_EXPECT_HTTP_BODY : TCPCHK_EXPECT_HTTP_BODY_REGEX); |
| 2776 | |
| 2777 | if (!*(args[cur_arg+1])) { |
| 2778 | memprintf(errmsg, "'%s' expects a <pattern> as argument", args[cur_arg]); |
| 2779 | goto error; |
| 2780 | } |
| 2781 | cur_arg++; |
| 2782 | pattern = args[cur_arg]; |
| 2783 | } |
| 2784 | else if (strcmp(args[cur_arg], "binary") == 0 || strcmp(args[cur_arg], "rbinary") == 0) { |
| 2785 | if (proto == TCPCHK_RULES_HTTP_CHK) |
| 2786 | goto bad_http_kw; |
| 2787 | if (type != TCPCHK_EXPECT_UNDEF) { |
| 2788 | memprintf(errmsg, "only on pattern expected"); |
| 2789 | goto error; |
| 2790 | } |
| 2791 | type = ((*(args[cur_arg]) == 'b') ? TCPCHK_EXPECT_BINARY : TCPCHK_EXPECT_BINARY_REGEX); |
| 2792 | |
| 2793 | if (!*(args[cur_arg+1])) { |
| 2794 | memprintf(errmsg, "'%s' expects a <pattern> as argument", args[cur_arg]); |
| 2795 | goto error; |
| 2796 | } |
| 2797 | cur_arg++; |
| 2798 | pattern = args[cur_arg]; |
| 2799 | } |
| 2800 | else if (strcmp(args[cur_arg], "string-lf") == 0 || strcmp(args[cur_arg], "binary-lf") == 0) { |
| 2801 | if (type != TCPCHK_EXPECT_UNDEF) { |
| 2802 | memprintf(errmsg, "only on pattern expected"); |
| 2803 | goto error; |
| 2804 | } |
| 2805 | if (proto != TCPCHK_RULES_HTTP_CHK) |
| 2806 | type = ((*(args[cur_arg]) == 's') ? TCPCHK_EXPECT_STRING_LF : TCPCHK_EXPECT_BINARY_LF); |
| 2807 | else { |
| 2808 | if (*(args[cur_arg]) != 's') |
| 2809 | goto bad_http_kw; |
| 2810 | type = TCPCHK_EXPECT_HTTP_BODY_LF; |
| 2811 | } |
| 2812 | |
| 2813 | if (!*(args[cur_arg+1])) { |
| 2814 | memprintf(errmsg, "'%s' expects a <pattern> as argument", args[cur_arg]); |
| 2815 | goto error; |
| 2816 | } |
| 2817 | cur_arg++; |
| 2818 | pattern = args[cur_arg]; |
| 2819 | } |
| 2820 | else if (strcmp(args[cur_arg], "status") == 0 || strcmp(args[cur_arg], "rstatus") == 0) { |
| 2821 | if (proto != TCPCHK_RULES_HTTP_CHK) |
| 2822 | goto bad_tcp_kw; |
| 2823 | if (type != TCPCHK_EXPECT_UNDEF) { |
| 2824 | memprintf(errmsg, "only on pattern expected"); |
| 2825 | goto error; |
| 2826 | } |
| 2827 | type = ((*(args[cur_arg]) == 's') ? TCPCHK_EXPECT_HTTP_STATUS : TCPCHK_EXPECT_HTTP_STATUS_REGEX); |
| 2828 | |
| 2829 | if (!*(args[cur_arg+1])) { |
| 2830 | memprintf(errmsg, "'%s' expects a <pattern> as argument", args[cur_arg]); |
| 2831 | goto error; |
| 2832 | } |
| 2833 | cur_arg++; |
| 2834 | pattern = args[cur_arg]; |
| 2835 | } |
| 2836 | else if (strcmp(args[cur_arg], "custom") == 0) { |
| 2837 | if (in_pattern) { |
| 2838 | memprintf(errmsg, "[!] not supported with '%s'", args[cur_arg]); |
| 2839 | goto error; |
| 2840 | } |
| 2841 | if (type != TCPCHK_EXPECT_UNDEF) { |
| 2842 | memprintf(errmsg, "only on pattern expected"); |
| 2843 | goto error; |
| 2844 | } |
| 2845 | type = TCPCHK_EXPECT_CUSTOM; |
| 2846 | } |
| 2847 | else if (strcmp(args[cur_arg], "hdr") == 0 || strcmp(args[cur_arg], "fhdr") == 0) { |
| 2848 | int orig_arg = cur_arg; |
| 2849 | |
| 2850 | if (proto != TCPCHK_RULES_HTTP_CHK) |
| 2851 | goto bad_tcp_kw; |
| 2852 | if (type != TCPCHK_EXPECT_UNDEF) { |
| 2853 | memprintf(errmsg, "only on pattern expected"); |
| 2854 | goto error; |
| 2855 | } |
| 2856 | type = TCPCHK_EXPECT_HTTP_HEADER; |
| 2857 | |
| 2858 | if (strcmp(args[cur_arg], "fhdr") == 0) |
| 2859 | flags |= TCPCHK_EXPT_FL_HTTP_HVAL_FULL; |
| 2860 | |
| 2861 | /* Parse the name pattern, mandatory */ |
| 2862 | if (!*(args[cur_arg+1]) || !*(args[cur_arg+2]) || |
| 2863 | (strcmp(args[cur_arg+1], "name") != 0 && strcmp(args[cur_arg+1], "name-lf") != 0)) { |
| 2864 | memprintf(errmsg, "'%s' expects at the name keyword as first argument followed by a pattern", |
| 2865 | args[orig_arg]); |
| 2866 | goto error; |
| 2867 | } |
| 2868 | |
| 2869 | if (strcmp(args[cur_arg+1], "name-lf") == 0) |
| 2870 | flags |= TCPCHK_EXPT_FL_HTTP_HNAME_FMT; |
| 2871 | |
| 2872 | cur_arg += 2; |
| 2873 | if (strcmp(args[cur_arg], "-m") == 0) { |
| 2874 | if (!*(args[cur_arg+1])) { |
| 2875 | memprintf(errmsg, "'%s' : '%s' expects at a matching pattern ('str', 'beg', 'end', 'sub' or 'reg')", |
| 2876 | args[orig_arg], args[cur_arg]); |
| 2877 | goto error; |
| 2878 | } |
| 2879 | if (strcmp(args[cur_arg+1], "str") == 0) |
| 2880 | flags |= TCPCHK_EXPT_FL_HTTP_HNAME_STR; |
| 2881 | else if (strcmp(args[cur_arg+1], "beg") == 0) |
| 2882 | flags |= TCPCHK_EXPT_FL_HTTP_HNAME_BEG; |
| 2883 | else if (strcmp(args[cur_arg+1], "end") == 0) |
| 2884 | flags |= TCPCHK_EXPT_FL_HTTP_HNAME_END; |
| 2885 | else if (strcmp(args[cur_arg+1], "sub") == 0) |
| 2886 | flags |= TCPCHK_EXPT_FL_HTTP_HNAME_SUB; |
| 2887 | else if (strcmp(args[cur_arg+1], "reg") == 0) { |
| 2888 | if (flags & TCPCHK_EXPT_FL_HTTP_HNAME_FMT) { |
| 2889 | memprintf(errmsg, "'%s': log-format string is not supported with a regex matching method", |
| 2890 | args[orig_arg]); |
| 2891 | goto error; |
| 2892 | } |
| 2893 | flags |= TCPCHK_EXPT_FL_HTTP_HNAME_REG; |
| 2894 | } |
| 2895 | else { |
| 2896 | memprintf(errmsg, "'%s' : '%s' only supports 'str', 'beg', 'end', 'sub' or 'reg' (got '%s')", |
| 2897 | args[orig_arg], args[cur_arg], args[cur_arg+1]); |
| 2898 | goto error; |
| 2899 | } |
| 2900 | cur_arg += 2; |
| 2901 | } |
| 2902 | else |
| 2903 | flags |= TCPCHK_EXPT_FL_HTTP_HNAME_STR; |
| 2904 | npat = args[cur_arg]; |
| 2905 | |
| 2906 | if (!*(args[cur_arg+1]) || |
| 2907 | (strcmp(args[cur_arg+1], "value") != 0 && strcmp(args[cur_arg+1], "value-lf") != 0)) { |
| 2908 | flags |= TCPCHK_EXPT_FL_HTTP_HVAL_NONE; |
| 2909 | goto next; |
| 2910 | } |
| 2911 | if (strcmp(args[cur_arg+1], "value-lf") == 0) |
| 2912 | flags |= TCPCHK_EXPT_FL_HTTP_HVAL_FMT; |
| 2913 | |
| 2914 | /* Parse the value pattern, optional */ |
| 2915 | if (strcmp(args[cur_arg+2], "-m") == 0) { |
| 2916 | cur_arg += 2; |
| 2917 | if (!*(args[cur_arg+1])) { |
| 2918 | memprintf(errmsg, "'%s' : '%s' expects at a matching pattern ('str', 'beg', 'end', 'sub' or 'reg')", |
| 2919 | args[orig_arg], args[cur_arg]); |
| 2920 | goto error; |
| 2921 | } |
| 2922 | if (strcmp(args[cur_arg+1], "str") == 0) |
| 2923 | flags |= TCPCHK_EXPT_FL_HTTP_HVAL_STR; |
| 2924 | else if (strcmp(args[cur_arg+1], "beg") == 0) |
| 2925 | flags |= TCPCHK_EXPT_FL_HTTP_HVAL_BEG; |
| 2926 | else if (strcmp(args[cur_arg+1], "end") == 0) |
| 2927 | flags |= TCPCHK_EXPT_FL_HTTP_HVAL_END; |
| 2928 | else if (strcmp(args[cur_arg+1], "sub") == 0) |
| 2929 | flags |= TCPCHK_EXPT_FL_HTTP_HVAL_SUB; |
| 2930 | else if (strcmp(args[cur_arg+1], "reg") == 0) { |
| 2931 | if (flags & TCPCHK_EXPT_FL_HTTP_HVAL_FMT) { |
| 2932 | memprintf(errmsg, "'%s': log-format string is not supported with a regex matching method", |
| 2933 | args[orig_arg]); |
| 2934 | goto error; |
| 2935 | } |
| 2936 | flags |= TCPCHK_EXPT_FL_HTTP_HVAL_REG; |
| 2937 | } |
| 2938 | else { |
| 2939 | memprintf(errmsg, "'%s' : '%s' only supports 'str', 'beg', 'end', 'sub' or 'reg' (got '%s')", |
| 2940 | args[orig_arg], args[cur_arg], args[cur_arg+1]); |
| 2941 | goto error; |
| 2942 | } |
| 2943 | } |
| 2944 | else |
| 2945 | flags |= TCPCHK_EXPT_FL_HTTP_HVAL_STR; |
| 2946 | |
| 2947 | if (!*(args[cur_arg+2])) { |
| 2948 | memprintf(errmsg, "'%s' expect a pattern with the value keyword", args[orig_arg]); |
| 2949 | goto error; |
| 2950 | } |
| 2951 | vpat = args[cur_arg+2]; |
| 2952 | cur_arg += 2; |
| 2953 | } |
| 2954 | else if (strcmp(args[cur_arg], "comment") == 0) { |
| 2955 | if (in_pattern) { |
| 2956 | memprintf(errmsg, "[!] not supported with '%s'", args[cur_arg]); |
| 2957 | goto error; |
| 2958 | } |
| 2959 | if (!*(args[cur_arg+1])) { |
| 2960 | memprintf(errmsg, "'%s' expects a string as argument", args[cur_arg]); |
| 2961 | goto error; |
| 2962 | } |
| 2963 | cur_arg++; |
| 2964 | free(comment); |
| 2965 | comment = strdup(args[cur_arg]); |
| 2966 | if (!comment) { |
| 2967 | memprintf(errmsg, "out of memory"); |
| 2968 | goto error; |
| 2969 | } |
| 2970 | } |
| 2971 | else if (strcmp(args[cur_arg], "on-success") == 0) { |
| 2972 | if (in_pattern) { |
| 2973 | memprintf(errmsg, "[!] not supported with '%s'", args[cur_arg]); |
| 2974 | goto error; |
| 2975 | } |
| 2976 | if (!*(args[cur_arg+1])) { |
| 2977 | memprintf(errmsg, "'%s' expects a string as argument", args[cur_arg]); |
| 2978 | goto error; |
| 2979 | } |
| 2980 | cur_arg++; |
| 2981 | on_success_msg = args[cur_arg]; |
| 2982 | } |
| 2983 | else if (strcmp(args[cur_arg], "on-error") == 0) { |
| 2984 | if (in_pattern) { |
| 2985 | memprintf(errmsg, "[!] not supported with '%s'", args[cur_arg]); |
| 2986 | goto error; |
| 2987 | } |
| 2988 | if (!*(args[cur_arg+1])) { |
| 2989 | memprintf(errmsg, "'%s' expects a string as argument", args[cur_arg]); |
| 2990 | goto error; |
| 2991 | } |
| 2992 | cur_arg++; |
| 2993 | on_error_msg = args[cur_arg]; |
| 2994 | } |
| 2995 | else if (strcmp(args[cur_arg], "ok-status") == 0) { |
| 2996 | if (in_pattern) { |
| 2997 | memprintf(errmsg, "[!] not supported with '%s'", args[cur_arg]); |
| 2998 | goto error; |
| 2999 | } |
| 3000 | if (!*(args[cur_arg+1])) { |
| 3001 | memprintf(errmsg, "'%s' expects a string as argument", args[cur_arg]); |
| 3002 | goto error; |
| 3003 | } |
| 3004 | if (strcasecmp(args[cur_arg+1], "L7OK") == 0) |
| 3005 | ok_st = HCHK_STATUS_L7OKD; |
| 3006 | else if (strcasecmp(args[cur_arg+1], "L7OKC") == 0) |
| 3007 | ok_st = HCHK_STATUS_L7OKCD; |
| 3008 | else if (strcasecmp(args[cur_arg+1], "L6OK") == 0) |
| 3009 | ok_st = HCHK_STATUS_L6OK; |
| 3010 | else if (strcasecmp(args[cur_arg+1], "L4OK") == 0) |
| 3011 | ok_st = HCHK_STATUS_L4OK; |
| 3012 | else { |
| 3013 | memprintf(errmsg, "'%s' only supports 'L4OK', 'L6OK', 'L7OK' or 'L7OKC' status (got '%s').", |
| 3014 | args[cur_arg], args[cur_arg+1]); |
| 3015 | goto error; |
| 3016 | } |
| 3017 | cur_arg++; |
| 3018 | } |
| 3019 | else if (strcmp(args[cur_arg], "error-status") == 0) { |
| 3020 | if (in_pattern) { |
| 3021 | memprintf(errmsg, "[!] not supported with '%s'", args[cur_arg]); |
| 3022 | goto error; |
| 3023 | } |
| 3024 | if (!*(args[cur_arg+1])) { |
| 3025 | memprintf(errmsg, "'%s' expects a string as argument", args[cur_arg]); |
| 3026 | goto error; |
| 3027 | } |
| 3028 | if (strcasecmp(args[cur_arg+1], "L7RSP") == 0) |
| 3029 | err_st = HCHK_STATUS_L7RSP; |
| 3030 | else if (strcasecmp(args[cur_arg+1], "L7STS") == 0) |
| 3031 | err_st = HCHK_STATUS_L7STS; |
Christopher Faulet | 83662b5 | 2020-11-20 17:47:47 +0100 | [diff] [blame] | 3032 | else if (strcasecmp(args[cur_arg+1], "L7OKC") == 0) |
| 3033 | err_st = HCHK_STATUS_L7OKCD; |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 3034 | else if (strcasecmp(args[cur_arg+1], "L6RSP") == 0) |
| 3035 | err_st = HCHK_STATUS_L6RSP; |
| 3036 | else if (strcasecmp(args[cur_arg+1], "L4CON") == 0) |
| 3037 | err_st = HCHK_STATUS_L4CON; |
| 3038 | else { |
| 3039 | memprintf(errmsg, "'%s' only supports 'L4CON', 'L6RSP', 'L7RSP' or 'L7STS' status (got '%s').", |
| 3040 | args[cur_arg], args[cur_arg+1]); |
| 3041 | goto error; |
| 3042 | } |
| 3043 | cur_arg++; |
| 3044 | } |
| 3045 | else if (strcmp(args[cur_arg], "status-code") == 0) { |
| 3046 | int idx = 0; |
| 3047 | |
| 3048 | if (in_pattern) { |
| 3049 | memprintf(errmsg, "[!] not supported with '%s'", args[cur_arg]); |
| 3050 | goto error; |
| 3051 | } |
| 3052 | if (!*(args[cur_arg+1])) { |
| 3053 | memprintf(errmsg, "'%s' expects an expression as argument", args[cur_arg]); |
| 3054 | goto error; |
| 3055 | } |
| 3056 | |
| 3057 | cur_arg++; |
| 3058 | release_sample_expr(status_expr); |
| 3059 | px->conf.args.ctx = ARGC_SRV; |
| 3060 | status_expr = sample_parse_expr((char *[]){args[cur_arg], NULL}, &idx, |
| 3061 | file, line, errmsg, &px->conf.args, NULL); |
| 3062 | if (!status_expr) { |
| 3063 | memprintf(errmsg, "error detected while parsing status-code expression : %s", *errmsg); |
| 3064 | goto error; |
| 3065 | } |
| 3066 | if (!(status_expr->fetch->val & SMP_VAL_BE_CHK_RUL)) { |
| 3067 | memprintf(errmsg, "error detected while parsing status-code expression : " |
| 3068 | " fetch method '%s' extracts information from '%s', " |
| 3069 | "none of which is available here.\n", |
| 3070 | args[cur_arg], sample_src_names(status_expr->fetch->use)); |
| 3071 | goto error; |
| 3072 | } |
| 3073 | px->http_needed |= !!(status_expr->fetch->use & SMP_USE_HTTP_ANY); |
| 3074 | } |
| 3075 | else if (strcmp(args[cur_arg], "tout-status") == 0) { |
| 3076 | if (in_pattern) { |
| 3077 | memprintf(errmsg, "[!] not supported with '%s'", args[cur_arg]); |
| 3078 | goto error; |
| 3079 | } |
| 3080 | if (!*(args[cur_arg+1])) { |
| 3081 | memprintf(errmsg, "'%s' expects a string as argument", args[cur_arg]); |
| 3082 | goto error; |
| 3083 | } |
| 3084 | if (strcasecmp(args[cur_arg+1], "L7TOUT") == 0) |
| 3085 | tout_st = HCHK_STATUS_L7TOUT; |
| 3086 | else if (strcasecmp(args[cur_arg+1], "L6TOUT") == 0) |
| 3087 | tout_st = HCHK_STATUS_L6TOUT; |
| 3088 | else if (strcasecmp(args[cur_arg+1], "L4TOUT") == 0) |
| 3089 | tout_st = HCHK_STATUS_L4TOUT; |
| 3090 | else { |
| 3091 | memprintf(errmsg, "'%s' only supports 'L4TOUT', 'L6TOUT' or 'L7TOUT' status (got '%s').", |
| 3092 | args[cur_arg], args[cur_arg+1]); |
| 3093 | goto error; |
| 3094 | } |
| 3095 | cur_arg++; |
| 3096 | } |
| 3097 | else { |
| 3098 | if (proto == TCPCHK_RULES_HTTP_CHK) { |
| 3099 | bad_http_kw: |
| 3100 | memprintf(errmsg, "'only supports min-recv, [!]string', '[!]rstring', '[!]string-lf', '[!]status', " |
| 3101 | "'[!]rstatus', [!]hdr, [!]fhdr or comment but got '%s' as argument.", args[cur_arg]); |
| 3102 | } |
| 3103 | else { |
| 3104 | bad_tcp_kw: |
| 3105 | memprintf(errmsg, "'only supports min-recv, '[!]binary', '[!]string', '[!]rstring', '[!]string-lf'" |
| 3106 | "'[!]rbinary', '[!]binary-lf' or comment but got '%s' as argument.", args[cur_arg]); |
| 3107 | } |
| 3108 | goto error; |
| 3109 | } |
| 3110 | next: |
| 3111 | cur_arg++; |
| 3112 | } |
| 3113 | |
| 3114 | chk = calloc(1, sizeof(*chk)); |
| 3115 | if (!chk) { |
| 3116 | memprintf(errmsg, "out of memory"); |
| 3117 | goto error; |
| 3118 | } |
| 3119 | chk->action = TCPCHK_ACT_EXPECT; |
| 3120 | LIST_INIT(&chk->expect.onerror_fmt); |
| 3121 | LIST_INIT(&chk->expect.onsuccess_fmt); |
| 3122 | chk->comment = comment; comment = NULL; |
| 3123 | chk->expect.type = type; |
| 3124 | chk->expect.min_recv = min_recv; |
| 3125 | chk->expect.flags = flags | (inverse ? TCPCHK_EXPT_FL_INV : 0); |
| 3126 | chk->expect.ok_status = ok_st; |
| 3127 | chk->expect.err_status = err_st; |
| 3128 | chk->expect.tout_status = tout_st; |
| 3129 | chk->expect.status_expr = status_expr; status_expr = NULL; |
| 3130 | |
| 3131 | if (on_success_msg) { |
| 3132 | px->conf.args.ctx = ARGC_SRV; |
| 3133 | if (!parse_logformat_string(on_success_msg, px, &chk->expect.onsuccess_fmt, 0, SMP_VAL_BE_CHK_RUL, errmsg)) { |
| 3134 | memprintf(errmsg, "'%s' invalid log-format string (%s).\n", on_success_msg, *errmsg); |
| 3135 | goto error; |
| 3136 | } |
| 3137 | } |
| 3138 | if (on_error_msg) { |
| 3139 | px->conf.args.ctx = ARGC_SRV; |
| 3140 | if (!parse_logformat_string(on_error_msg, px, &chk->expect.onerror_fmt, 0, SMP_VAL_BE_CHK_RUL, errmsg)) { |
| 3141 | memprintf(errmsg, "'%s' invalid log-format string (%s).\n", on_error_msg, *errmsg); |
| 3142 | goto error; |
| 3143 | } |
| 3144 | } |
| 3145 | |
| 3146 | switch (chk->expect.type) { |
| 3147 | case TCPCHK_EXPECT_HTTP_STATUS: { |
| 3148 | const char *p = pattern; |
| 3149 | unsigned int c1,c2; |
| 3150 | |
| 3151 | chk->expect.codes.codes = NULL; |
| 3152 | chk->expect.codes.num = 0; |
| 3153 | while (1) { |
| 3154 | c1 = c2 = read_uint(&p, pattern + strlen(pattern)); |
| 3155 | if (*p == '-') { |
| 3156 | p++; |
| 3157 | c2 = read_uint(&p, pattern + strlen(pattern)); |
| 3158 | } |
| 3159 | if (c1 > c2) { |
| 3160 | memprintf(errmsg, "invalid range of status codes '%s'", pattern); |
| 3161 | goto error; |
| 3162 | } |
| 3163 | |
| 3164 | chk->expect.codes.num++; |
| 3165 | chk->expect.codes.codes = my_realloc2(chk->expect.codes.codes, |
| 3166 | chk->expect.codes.num * sizeof(*chk->expect.codes.codes)); |
| 3167 | if (!chk->expect.codes.codes) { |
| 3168 | memprintf(errmsg, "out of memory"); |
| 3169 | goto error; |
| 3170 | } |
| 3171 | chk->expect.codes.codes[chk->expect.codes.num-1][0] = c1; |
| 3172 | chk->expect.codes.codes[chk->expect.codes.num-1][1] = c2; |
| 3173 | |
| 3174 | if (*p == '\0') |
| 3175 | break; |
| 3176 | if (*p != ',') { |
| 3177 | memprintf(errmsg, "invalid character '%c' in the list of status codes", *p); |
| 3178 | goto error; |
| 3179 | } |
| 3180 | p++; |
| 3181 | } |
| 3182 | break; |
| 3183 | } |
| 3184 | case TCPCHK_EXPECT_STRING: |
| 3185 | case TCPCHK_EXPECT_HTTP_BODY: |
Tim Duesterhus | dcf753a | 2021-03-04 17:31:47 +0100 | [diff] [blame] | 3186 | chk->expect.data = ist(strdup(pattern)); |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 3187 | if (!isttest(chk->expect.data)) { |
| 3188 | memprintf(errmsg, "out of memory"); |
| 3189 | goto error; |
| 3190 | } |
| 3191 | break; |
| 3192 | case TCPCHK_EXPECT_BINARY: { |
| 3193 | int len = chk->expect.data.len; |
| 3194 | |
| 3195 | if (parse_binary(pattern, &chk->expect.data.ptr, &len, errmsg) == 0) { |
| 3196 | memprintf(errmsg, "invalid binary string (%s)", *errmsg); |
| 3197 | goto error; |
| 3198 | } |
| 3199 | chk->expect.data.len = len; |
| 3200 | break; |
| 3201 | } |
| 3202 | case TCPCHK_EXPECT_STRING_REGEX: |
| 3203 | case TCPCHK_EXPECT_BINARY_REGEX: |
| 3204 | case TCPCHK_EXPECT_HTTP_STATUS_REGEX: |
| 3205 | case TCPCHK_EXPECT_HTTP_BODY_REGEX: |
| 3206 | chk->expect.regex = regex_comp(pattern, 1, 0, errmsg); |
| 3207 | if (!chk->expect.regex) |
| 3208 | goto error; |
| 3209 | break; |
| 3210 | |
| 3211 | case TCPCHK_EXPECT_STRING_LF: |
| 3212 | case TCPCHK_EXPECT_BINARY_LF: |
| 3213 | case TCPCHK_EXPECT_HTTP_BODY_LF: |
| 3214 | LIST_INIT(&chk->expect.fmt); |
| 3215 | px->conf.args.ctx = ARGC_SRV; |
| 3216 | if (!parse_logformat_string(pattern, px, &chk->expect.fmt, 0, SMP_VAL_BE_CHK_RUL, errmsg)) { |
| 3217 | memprintf(errmsg, "'%s' invalid log-format string (%s).\n", pattern, *errmsg); |
| 3218 | goto error; |
| 3219 | } |
| 3220 | break; |
| 3221 | |
| 3222 | case TCPCHK_EXPECT_HTTP_HEADER: |
| 3223 | if (!npat) { |
| 3224 | memprintf(errmsg, "unexpected error, undefined header name pattern"); |
| 3225 | goto error; |
| 3226 | } |
| 3227 | if (chk->expect.flags & TCPCHK_EXPT_FL_HTTP_HNAME_REG) { |
| 3228 | chk->expect.hdr.name_re = regex_comp(npat, 0, 0, errmsg); |
| 3229 | if (!chk->expect.hdr.name_re) |
| 3230 | goto error; |
| 3231 | } |
| 3232 | else if (chk->expect.flags & TCPCHK_EXPT_FL_HTTP_HNAME_FMT) { |
| 3233 | px->conf.args.ctx = ARGC_SRV; |
| 3234 | LIST_INIT(&chk->expect.hdr.name_fmt); |
| 3235 | if (!parse_logformat_string(npat, px, &chk->expect.hdr.name_fmt, 0, SMP_VAL_BE_CHK_RUL, errmsg)) { |
| 3236 | memprintf(errmsg, "'%s' invalid log-format string (%s).\n", npat, *errmsg); |
| 3237 | goto error; |
| 3238 | } |
| 3239 | } |
| 3240 | else { |
Tim Duesterhus | dcf753a | 2021-03-04 17:31:47 +0100 | [diff] [blame] | 3241 | chk->expect.hdr.name = ist(strdup(npat)); |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 3242 | if (!isttest(chk->expect.hdr.name)) { |
| 3243 | memprintf(errmsg, "out of memory"); |
| 3244 | goto error; |
| 3245 | } |
| 3246 | } |
| 3247 | |
| 3248 | if (chk->expect.flags & TCPCHK_EXPT_FL_HTTP_HVAL_NONE) { |
| 3249 | chk->expect.hdr.value = IST_NULL; |
| 3250 | break; |
| 3251 | } |
| 3252 | |
| 3253 | if (!vpat) { |
| 3254 | memprintf(errmsg, "unexpected error, undefined header value pattern"); |
| 3255 | goto error; |
| 3256 | } |
| 3257 | else if (chk->expect.flags & TCPCHK_EXPT_FL_HTTP_HVAL_REG) { |
| 3258 | chk->expect.hdr.value_re = regex_comp(vpat, 1, 0, errmsg); |
| 3259 | if (!chk->expect.hdr.value_re) |
| 3260 | goto error; |
| 3261 | } |
| 3262 | else if (chk->expect.flags & TCPCHK_EXPT_FL_HTTP_HVAL_FMT) { |
| 3263 | px->conf.args.ctx = ARGC_SRV; |
| 3264 | LIST_INIT(&chk->expect.hdr.value_fmt); |
| 3265 | if (!parse_logformat_string(vpat, px, &chk->expect.hdr.value_fmt, 0, SMP_VAL_BE_CHK_RUL, errmsg)) { |
| 3266 | memprintf(errmsg, "'%s' invalid log-format string (%s).\n", npat, *errmsg); |
| 3267 | goto error; |
| 3268 | } |
| 3269 | } |
| 3270 | else { |
Tim Duesterhus | dcf753a | 2021-03-04 17:31:47 +0100 | [diff] [blame] | 3271 | chk->expect.hdr.value = ist(strdup(vpat)); |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 3272 | if (!isttest(chk->expect.hdr.value)) { |
| 3273 | memprintf(errmsg, "out of memory"); |
| 3274 | goto error; |
| 3275 | } |
| 3276 | } |
| 3277 | |
| 3278 | break; |
| 3279 | case TCPCHK_EXPECT_CUSTOM: |
| 3280 | chk->expect.custom = NULL; /* Must be defined by the caller ! */ |
| 3281 | break; |
| 3282 | case TCPCHK_EXPECT_UNDEF: |
| 3283 | memprintf(errmsg, "pattern not found"); |
| 3284 | goto error; |
| 3285 | } |
| 3286 | |
| 3287 | /* All tcp-check expect points back to the first inverse expect rule in |
| 3288 | * a chain of one or more expect rule, potentially itself. |
| 3289 | */ |
| 3290 | chk->expect.head = chk; |
| 3291 | list_for_each_entry_rev(prev_check, rules, list) { |
| 3292 | if (prev_check->action == TCPCHK_ACT_EXPECT) { |
| 3293 | if (prev_check->expect.flags & TCPCHK_EXPT_FL_INV) |
| 3294 | chk->expect.head = prev_check; |
| 3295 | continue; |
| 3296 | } |
| 3297 | if (prev_check->action != TCPCHK_ACT_COMMENT && prev_check->action != TCPCHK_ACT_ACTION_KW) |
| 3298 | break; |
| 3299 | } |
| 3300 | return chk; |
| 3301 | |
| 3302 | error: |
| 3303 | free_tcpcheck(chk, 0); |
| 3304 | free(comment); |
| 3305 | release_sample_expr(status_expr); |
| 3306 | return NULL; |
| 3307 | } |
| 3308 | |
| 3309 | /* Overwrites fields of the old http send rule with those of the new one. When |
| 3310 | * replaced, old values are freed and replaced by the new ones. New values are |
| 3311 | * not copied but transferred. At the end <new> should be empty and can be |
| 3312 | * safely released. This function never fails. |
| 3313 | */ |
| 3314 | void tcpcheck_overwrite_send_http_rule(struct tcpcheck_rule *old, struct tcpcheck_rule *new) |
| 3315 | { |
| 3316 | struct logformat_node *lf, *lfb; |
| 3317 | struct tcpcheck_http_hdr *hdr, *bhdr; |
| 3318 | |
| 3319 | |
| 3320 | if (new->send.http.meth.str.area) { |
| 3321 | free(old->send.http.meth.str.area); |
| 3322 | old->send.http.meth.meth = new->send.http.meth.meth; |
| 3323 | old->send.http.meth.str.area = new->send.http.meth.str.area; |
| 3324 | old->send.http.meth.str.data = new->send.http.meth.str.data; |
| 3325 | new->send.http.meth.str = BUF_NULL; |
| 3326 | } |
| 3327 | |
| 3328 | if (!(new->send.http.flags & TCPCHK_SND_HTTP_FL_URI_FMT) && isttest(new->send.http.uri)) { |
| 3329 | if (!(old->send.http.flags & TCPCHK_SND_HTTP_FL_URI_FMT)) |
| 3330 | istfree(&old->send.http.uri); |
| 3331 | else |
| 3332 | free_tcpcheck_fmt(&old->send.http.uri_fmt); |
| 3333 | old->send.http.flags &= ~TCPCHK_SND_HTTP_FL_URI_FMT; |
| 3334 | old->send.http.uri = new->send.http.uri; |
| 3335 | new->send.http.uri = IST_NULL; |
| 3336 | } |
| 3337 | else if ((new->send.http.flags & TCPCHK_SND_HTTP_FL_URI_FMT) && !LIST_ISEMPTY(&new->send.http.uri_fmt)) { |
| 3338 | if (!(old->send.http.flags & TCPCHK_SND_HTTP_FL_URI_FMT)) |
| 3339 | istfree(&old->send.http.uri); |
| 3340 | else |
| 3341 | free_tcpcheck_fmt(&old->send.http.uri_fmt); |
| 3342 | old->send.http.flags |= TCPCHK_SND_HTTP_FL_URI_FMT; |
| 3343 | LIST_INIT(&old->send.http.uri_fmt); |
| 3344 | list_for_each_entry_safe(lf, lfb, &new->send.http.uri_fmt, list) { |
| 3345 | LIST_DEL(&lf->list); |
| 3346 | LIST_ADDQ(&old->send.http.uri_fmt, &lf->list); |
| 3347 | } |
| 3348 | } |
| 3349 | |
| 3350 | if (isttest(new->send.http.vsn)) { |
| 3351 | istfree(&old->send.http.vsn); |
| 3352 | old->send.http.vsn = new->send.http.vsn; |
| 3353 | new->send.http.vsn = IST_NULL; |
| 3354 | } |
| 3355 | |
| 3356 | free_tcpcheck_http_hdrs(&old->send.http.hdrs); |
| 3357 | list_for_each_entry_safe(hdr, bhdr, &new->send.http.hdrs, list) { |
| 3358 | LIST_DEL(&hdr->list); |
| 3359 | LIST_ADDQ(&old->send.http.hdrs, &hdr->list); |
| 3360 | } |
| 3361 | |
| 3362 | if (!(new->send.http.flags & TCPCHK_SND_HTTP_FL_BODY_FMT) && isttest(new->send.http.body)) { |
| 3363 | if (!(old->send.http.flags & TCPCHK_SND_HTTP_FL_BODY_FMT)) |
| 3364 | istfree(&old->send.http.body); |
| 3365 | else |
| 3366 | free_tcpcheck_fmt(&old->send.http.body_fmt); |
| 3367 | old->send.http.flags &= ~TCPCHK_SND_HTTP_FL_BODY_FMT; |
| 3368 | old->send.http.body = new->send.http.body; |
| 3369 | new->send.http.body = IST_NULL; |
| 3370 | } |
| 3371 | else if ((new->send.http.flags & TCPCHK_SND_HTTP_FL_BODY_FMT) && !LIST_ISEMPTY(&new->send.http.body_fmt)) { |
| 3372 | if (!(old->send.http.flags & TCPCHK_SND_HTTP_FL_BODY_FMT)) |
| 3373 | istfree(&old->send.http.body); |
| 3374 | else |
| 3375 | free_tcpcheck_fmt(&old->send.http.body_fmt); |
| 3376 | old->send.http.flags |= TCPCHK_SND_HTTP_FL_BODY_FMT; |
| 3377 | LIST_INIT(&old->send.http.body_fmt); |
| 3378 | list_for_each_entry_safe(lf, lfb, &new->send.http.body_fmt, list) { |
| 3379 | LIST_DEL(&lf->list); |
| 3380 | LIST_ADDQ(&old->send.http.body_fmt, &lf->list); |
| 3381 | } |
| 3382 | } |
| 3383 | } |
| 3384 | |
| 3385 | /* Internal function used to add an http-check rule in a list during the config |
| 3386 | * parsing step. Depending on its type, and the previously inserted rules, a |
| 3387 | * specific action may be performed or an error may be reported. This functions |
| 3388 | * returns 1 on success and 0 on error and <errmsg> is filled with the error |
| 3389 | * message. |
| 3390 | */ |
| 3391 | int tcpcheck_add_http_rule(struct tcpcheck_rule *chk, struct tcpcheck_rules *rules, char **errmsg) |
| 3392 | { |
| 3393 | struct tcpcheck_rule *r; |
| 3394 | |
| 3395 | /* the implicit send rule coming from an "option httpchk" line must be |
| 3396 | * merged with the first explici http-check send rule, if |
Ilya Shipitsin | 47d1718 | 2020-06-21 21:42:57 +0500 | [diff] [blame] | 3397 | * any. Depending on the declaration order some tests are required. |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 3398 | * |
Ilya Shipitsin | 47d1718 | 2020-06-21 21:42:57 +0500 | [diff] [blame] | 3399 | * Some tests are also required for other kinds of http-check rules to be |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 3400 | * sure the ruleset remains valid. |
| 3401 | */ |
| 3402 | |
| 3403 | if (chk->action == TCPCHK_ACT_SEND && (chk->send.http.flags & TCPCHK_SND_HTTP_FROM_OPT)) { |
| 3404 | /* Tries to add an implicit http-check send rule from an "option httpchk" line. |
| 3405 | * First, the first rule is retrieved, skipping the first CONNECT, if any, and |
| 3406 | * following tests are performed : |
| 3407 | * |
| 3408 | * 1- If there is no such rule or if it is not a send rule, the implicit send |
| 3409 | * rule is pushed in front of the ruleset |
| 3410 | * |
| 3411 | * 2- If it is another implicit send rule, it is replaced with the new one. |
| 3412 | * |
| 3413 | * 3- Otherwise, it means it is an explicit send rule. In this case we merge |
| 3414 | * both, overwriting the old send rule (the explicit one) with info of the |
| 3415 | * new send rule (the implicit one). |
| 3416 | */ |
| 3417 | r = get_first_tcpcheck_rule(rules); |
| 3418 | if (r && r->action == TCPCHK_ACT_CONNECT) |
| 3419 | r = get_next_tcpcheck_rule(rules, r); |
| 3420 | if (!r || r->action != TCPCHK_ACT_SEND) |
| 3421 | LIST_ADD(rules->list, &chk->list); |
| 3422 | else if (r->send.http.flags & TCPCHK_SND_HTTP_FROM_OPT) { |
| 3423 | LIST_DEL(&r->list); |
| 3424 | free_tcpcheck(r, 0); |
| 3425 | LIST_ADD(rules->list, &chk->list); |
| 3426 | } |
| 3427 | else { |
| 3428 | tcpcheck_overwrite_send_http_rule(r, chk); |
| 3429 | free_tcpcheck(chk, 0); |
| 3430 | } |
| 3431 | } |
| 3432 | else { |
| 3433 | /* Tries to add an explicit http-check rule. First of all we check the typefo the |
| 3434 | * last inserted rule to be sure it is valid. Then for send rule, we try to merge it |
| 3435 | * with an existing implicit send rule, if any. At the end, if there is no error, |
| 3436 | * the rule is appended to the list. |
| 3437 | */ |
| 3438 | |
| 3439 | r = get_last_tcpcheck_rule(rules); |
| 3440 | if (!r || (r->action == TCPCHK_ACT_SEND && (r->send.http.flags & TCPCHK_SND_HTTP_FROM_OPT))) |
| 3441 | /* no error */; |
| 3442 | else if (r->action != TCPCHK_ACT_CONNECT && chk->action == TCPCHK_ACT_SEND) { |
| 3443 | memprintf(errmsg, "unable to add http-check send rule at step %d (missing connect rule).", |
| 3444 | chk->index+1); |
| 3445 | return 0; |
| 3446 | } |
| 3447 | else if (r->action != TCPCHK_ACT_SEND && r->action != TCPCHK_ACT_EXPECT && chk->action == TCPCHK_ACT_EXPECT) { |
| 3448 | memprintf(errmsg, "unable to add http-check expect rule at step %d (missing send rule).", |
| 3449 | chk->index+1); |
| 3450 | return 0; |
| 3451 | } |
| 3452 | else if (r->action != TCPCHK_ACT_EXPECT && chk->action == TCPCHK_ACT_CONNECT) { |
| 3453 | memprintf(errmsg, "unable to add http-check connect rule at step %d (missing expect rule).", |
| 3454 | chk->index+1); |
| 3455 | return 0; |
| 3456 | } |
| 3457 | |
| 3458 | if (chk->action == TCPCHK_ACT_SEND) { |
| 3459 | r = get_first_tcpcheck_rule(rules); |
| 3460 | if (r && r->action == TCPCHK_ACT_SEND && (r->send.http.flags & TCPCHK_SND_HTTP_FROM_OPT)) { |
| 3461 | tcpcheck_overwrite_send_http_rule(r, chk); |
| 3462 | free_tcpcheck(chk, 0); |
| 3463 | LIST_DEL(&r->list); |
| 3464 | r->send.http.flags &= ~TCPCHK_SND_HTTP_FROM_OPT; |
| 3465 | chk = r; |
| 3466 | } |
| 3467 | } |
| 3468 | LIST_ADDQ(rules->list, &chk->list); |
| 3469 | } |
| 3470 | return 1; |
| 3471 | } |
| 3472 | |
| 3473 | /* Check tcp-check health-check configuration for the proxy <px>. */ |
| 3474 | static int check_proxy_tcpcheck(struct proxy *px) |
| 3475 | { |
| 3476 | struct tcpcheck_rule *chk, *back; |
| 3477 | char *comment = NULL, *errmsg = NULL; |
| 3478 | enum tcpcheck_rule_type prev_action = TCPCHK_ACT_COMMENT; |
Christopher Faulet | fc633b6 | 2020-11-06 15:24:23 +0100 | [diff] [blame] | 3479 | int ret = ERR_NONE; |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 3480 | |
| 3481 | if (!(px->cap & PR_CAP_BE) || (px->options2 & PR_O2_CHK_ANY) != PR_O2_TCPCHK_CHK) { |
| 3482 | deinit_proxy_tcpcheck(px); |
| 3483 | goto out; |
| 3484 | } |
| 3485 | |
Willy Tarreau | 61cfdf4 | 2021-02-20 10:46:51 +0100 | [diff] [blame] | 3486 | ha_free(&px->check_command); |
| 3487 | ha_free(&px->check_path); |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 3488 | |
| 3489 | if (!px->tcpcheck_rules.list) { |
| 3490 | ha_alert("config : proxy '%s' : tcp-check configured but no ruleset defined.\n", px->id); |
| 3491 | ret |= ERR_ALERT | ERR_FATAL; |
| 3492 | goto out; |
| 3493 | } |
| 3494 | |
| 3495 | /* HTTP ruleset only : */ |
| 3496 | if ((px->tcpcheck_rules.flags & TCPCHK_RULES_PROTO_CHK) == TCPCHK_RULES_HTTP_CHK) { |
| 3497 | struct tcpcheck_rule *next; |
| 3498 | |
| 3499 | /* move remaining implicit send rule from "option httpchk" line to the right place. |
| 3500 | * If such rule exists, it must be the first one. In this case, the rule is moved |
| 3501 | * after the first connect rule, if any. Otherwise, nothing is done. |
| 3502 | */ |
| 3503 | chk = get_first_tcpcheck_rule(&px->tcpcheck_rules); |
| 3504 | if (chk && chk->action == TCPCHK_ACT_SEND && (chk->send.http.flags & TCPCHK_SND_HTTP_FROM_OPT)) { |
| 3505 | next = get_next_tcpcheck_rule(&px->tcpcheck_rules, chk); |
| 3506 | if (next && next->action == TCPCHK_ACT_CONNECT) { |
| 3507 | LIST_DEL(&chk->list); |
| 3508 | LIST_ADD(&next->list, &chk->list); |
| 3509 | chk->index = next->index; |
| 3510 | } |
| 3511 | } |
| 3512 | |
| 3513 | /* add implicit expect rule if the last one is a send. It is inherited from previous |
| 3514 | * versions where the http expect rule was optional. Now it is possible to chained |
| 3515 | * send/expect rules but the last expect may still be implicit. |
| 3516 | */ |
| 3517 | chk = get_last_tcpcheck_rule(&px->tcpcheck_rules); |
| 3518 | if (chk && chk->action == TCPCHK_ACT_SEND) { |
| 3519 | next = parse_tcpcheck_expect((char *[]){"http-check", "expect", "status", "200-399", ""}, |
| 3520 | 1, px, px->tcpcheck_rules.list, TCPCHK_RULES_HTTP_CHK, |
| 3521 | px->conf.file, px->conf.line, &errmsg); |
| 3522 | if (!next) { |
| 3523 | ha_alert("config : proxy '%s': unable to add implicit http-check expect rule " |
| 3524 | "(%s).\n", px->id, errmsg); |
| 3525 | free(errmsg); |
| 3526 | ret |= ERR_ALERT | ERR_FATAL; |
| 3527 | goto out; |
| 3528 | } |
| 3529 | LIST_ADDQ(px->tcpcheck_rules.list, &next->list); |
| 3530 | next->index = chk->index; |
| 3531 | } |
| 3532 | } |
| 3533 | |
| 3534 | /* For all ruleset: */ |
| 3535 | |
| 3536 | /* If there is no connect rule preceding all send / expect rules, an |
| 3537 | * implicit one is inserted before all others. |
| 3538 | */ |
| 3539 | chk = get_first_tcpcheck_rule(&px->tcpcheck_rules); |
| 3540 | if (!chk || chk->action != TCPCHK_ACT_CONNECT) { |
| 3541 | chk = calloc(1, sizeof(*chk)); |
| 3542 | if (!chk) { |
| 3543 | ha_alert("config : proxy '%s': unable to add implicit tcp-check connect rule " |
| 3544 | "(out of memory).\n", px->id); |
| 3545 | ret |= ERR_ALERT | ERR_FATAL; |
| 3546 | goto out; |
| 3547 | } |
| 3548 | chk->action = TCPCHK_ACT_CONNECT; |
| 3549 | chk->connect.options = (TCPCHK_OPT_DEFAULT_CONNECT|TCPCHK_OPT_IMPLICIT); |
| 3550 | LIST_ADD(px->tcpcheck_rules.list, &chk->list); |
| 3551 | } |
| 3552 | |
| 3553 | /* Remove all comment rules. To do so, when a such rule is found, the |
| 3554 | * comment is assigned to the following rule(s). |
| 3555 | */ |
| 3556 | list_for_each_entry_safe(chk, back, px->tcpcheck_rules.list, list) { |
Willy Tarreau | 61cfdf4 | 2021-02-20 10:46:51 +0100 | [diff] [blame] | 3557 | if (chk->action != prev_action && prev_action != TCPCHK_ACT_COMMENT) |
| 3558 | ha_free(&comment); |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 3559 | |
| 3560 | prev_action = chk->action; |
| 3561 | switch (chk->action) { |
| 3562 | case TCPCHK_ACT_COMMENT: |
| 3563 | free(comment); |
| 3564 | comment = chk->comment; |
| 3565 | LIST_DEL(&chk->list); |
| 3566 | free(chk); |
| 3567 | break; |
| 3568 | case TCPCHK_ACT_CONNECT: |
| 3569 | if (!chk->comment && comment) |
| 3570 | chk->comment = strdup(comment); |
Tim Duesterhus | 588b314 | 2020-05-29 14:35:51 +0200 | [diff] [blame] | 3571 | /* fall through */ |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 3572 | case TCPCHK_ACT_ACTION_KW: |
Willy Tarreau | 61cfdf4 | 2021-02-20 10:46:51 +0100 | [diff] [blame] | 3573 | ha_free(&comment); |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 3574 | break; |
| 3575 | case TCPCHK_ACT_SEND: |
| 3576 | case TCPCHK_ACT_EXPECT: |
| 3577 | if (!chk->comment && comment) |
| 3578 | chk->comment = strdup(comment); |
| 3579 | break; |
| 3580 | } |
| 3581 | } |
Willy Tarreau | 61cfdf4 | 2021-02-20 10:46:51 +0100 | [diff] [blame] | 3582 | ha_free(&comment); |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 3583 | |
| 3584 | out: |
| 3585 | return ret; |
| 3586 | } |
| 3587 | |
| 3588 | void deinit_proxy_tcpcheck(struct proxy *px) |
| 3589 | { |
| 3590 | free_tcpcheck_vars(&px->tcpcheck_rules.preset_vars); |
| 3591 | px->tcpcheck_rules.flags = 0; |
| 3592 | px->tcpcheck_rules.list = NULL; |
| 3593 | } |
| 3594 | |
| 3595 | static void deinit_tcpchecks() |
| 3596 | { |
| 3597 | struct tcpcheck_ruleset *rs; |
| 3598 | struct tcpcheck_rule *r, *rb; |
| 3599 | struct ebpt_node *node, *next; |
| 3600 | |
| 3601 | node = ebpt_first(&shared_tcpchecks); |
| 3602 | while (node) { |
| 3603 | next = ebpt_next(node); |
| 3604 | ebpt_delete(node); |
| 3605 | free(node->key); |
| 3606 | rs = container_of(node, typeof(*rs), node); |
| 3607 | list_for_each_entry_safe(r, rb, &rs->rules, list) { |
| 3608 | LIST_DEL(&r->list); |
| 3609 | free_tcpcheck(r, 0); |
| 3610 | } |
| 3611 | free(rs); |
| 3612 | node = next; |
| 3613 | } |
| 3614 | } |
| 3615 | |
| 3616 | int add_tcpcheck_expect_str(struct tcpcheck_rules *rules, const char *str) |
| 3617 | { |
| 3618 | struct tcpcheck_rule *tcpcheck, *prev_check; |
| 3619 | struct tcpcheck_expect *expect; |
| 3620 | |
Willy Tarreau | 6922e55 | 2021-03-22 21:11:45 +0100 | [diff] [blame] | 3621 | if ((tcpcheck = pool_zalloc(pool_head_tcpcheck_rule)) == NULL) |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 3622 | return 0; |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 3623 | tcpcheck->action = TCPCHK_ACT_EXPECT; |
| 3624 | |
| 3625 | expect = &tcpcheck->expect; |
| 3626 | expect->type = TCPCHK_EXPECT_STRING; |
| 3627 | LIST_INIT(&expect->onerror_fmt); |
| 3628 | LIST_INIT(&expect->onsuccess_fmt); |
| 3629 | expect->ok_status = HCHK_STATUS_L7OKD; |
| 3630 | expect->err_status = HCHK_STATUS_L7RSP; |
| 3631 | expect->tout_status = HCHK_STATUS_L7TOUT; |
Tim Duesterhus | dcf753a | 2021-03-04 17:31:47 +0100 | [diff] [blame] | 3632 | expect->data = ist(strdup(str)); |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 3633 | if (!isttest(expect->data)) { |
| 3634 | pool_free(pool_head_tcpcheck_rule, tcpcheck); |
| 3635 | return 0; |
| 3636 | } |
| 3637 | |
| 3638 | /* All tcp-check expect points back to the first inverse expect rule |
| 3639 | * in a chain of one or more expect rule, potentially itself. |
| 3640 | */ |
| 3641 | tcpcheck->expect.head = tcpcheck; |
| 3642 | list_for_each_entry_rev(prev_check, rules->list, list) { |
| 3643 | if (prev_check->action == TCPCHK_ACT_EXPECT) { |
| 3644 | if (prev_check->expect.flags & TCPCHK_EXPT_FL_INV) |
| 3645 | tcpcheck->expect.head = prev_check; |
| 3646 | continue; |
| 3647 | } |
| 3648 | if (prev_check->action != TCPCHK_ACT_COMMENT && prev_check->action != TCPCHK_ACT_ACTION_KW) |
| 3649 | break; |
| 3650 | } |
| 3651 | LIST_ADDQ(rules->list, &tcpcheck->list); |
| 3652 | return 1; |
| 3653 | } |
| 3654 | |
| 3655 | int add_tcpcheck_send_strs(struct tcpcheck_rules *rules, const char * const *strs) |
| 3656 | { |
| 3657 | struct tcpcheck_rule *tcpcheck; |
| 3658 | struct tcpcheck_send *send; |
| 3659 | const char *in; |
| 3660 | char *dst; |
| 3661 | int i; |
| 3662 | |
Willy Tarreau | 6922e55 | 2021-03-22 21:11:45 +0100 | [diff] [blame] | 3663 | if ((tcpcheck = pool_zalloc(pool_head_tcpcheck_rule)) == NULL) |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 3664 | return 0; |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 3665 | tcpcheck->action = TCPCHK_ACT_SEND; |
| 3666 | |
| 3667 | send = &tcpcheck->send; |
| 3668 | send->type = TCPCHK_SEND_STRING; |
| 3669 | |
| 3670 | for (i = 0; strs[i]; i++) |
| 3671 | send->data.len += strlen(strs[i]); |
| 3672 | |
| 3673 | send->data.ptr = malloc(istlen(send->data) + 1); |
| 3674 | if (!isttest(send->data)) { |
| 3675 | pool_free(pool_head_tcpcheck_rule, tcpcheck); |
| 3676 | return 0; |
| 3677 | } |
| 3678 | |
| 3679 | dst = istptr(send->data); |
| 3680 | for (i = 0; strs[i]; i++) |
| 3681 | for (in = strs[i]; (*dst = *in++); dst++); |
| 3682 | *dst = 0; |
| 3683 | |
| 3684 | LIST_ADDQ(rules->list, &tcpcheck->list); |
| 3685 | return 1; |
| 3686 | } |
| 3687 | |
| 3688 | /* Parses the "tcp-check" proxy keyword */ |
| 3689 | static int proxy_parse_tcpcheck(char **args, int section, struct proxy *curpx, |
Willy Tarreau | 0182516 | 2021-03-09 09:53:46 +0100 | [diff] [blame] | 3690 | const struct proxy *defpx, const char *file, int line, |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 3691 | char **errmsg) |
| 3692 | { |
| 3693 | struct tcpcheck_ruleset *rs = NULL; |
| 3694 | struct tcpcheck_rule *chk = NULL; |
| 3695 | int index, cur_arg, ret = 0; |
| 3696 | |
| 3697 | if (warnifnotcap(curpx, PR_CAP_BE, file, line, args[0], NULL)) |
| 3698 | ret = 1; |
| 3699 | |
| 3700 | /* Deduce the ruleset name from the proxy info */ |
| 3701 | chunk_printf(&trash, "*tcp-check-%s_%s-%d", |
| 3702 | ((curpx == defpx) ? "defaults" : curpx->id), |
| 3703 | curpx->conf.file, curpx->conf.line); |
| 3704 | |
| 3705 | rs = find_tcpcheck_ruleset(b_orig(&trash)); |
| 3706 | if (rs == NULL) { |
| 3707 | rs = create_tcpcheck_ruleset(b_orig(&trash)); |
| 3708 | if (rs == NULL) { |
| 3709 | memprintf(errmsg, "out of memory.\n"); |
| 3710 | goto error; |
| 3711 | } |
| 3712 | } |
| 3713 | |
| 3714 | index = 0; |
| 3715 | if (!LIST_ISEMPTY(&rs->rules)) { |
| 3716 | chk = LIST_PREV(&rs->rules, typeof(chk), list); |
| 3717 | index = chk->index + 1; |
Christopher Faulet | cd03be7 | 2021-03-12 12:00:14 +0100 | [diff] [blame] | 3718 | chk = NULL; |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 3719 | } |
| 3720 | |
| 3721 | cur_arg = 1; |
| 3722 | if (strcmp(args[cur_arg], "connect") == 0) |
| 3723 | chk = parse_tcpcheck_connect(args, cur_arg, curpx, &rs->rules, file, line, errmsg); |
| 3724 | else if (strcmp(args[cur_arg], "send") == 0 || strcmp(args[cur_arg], "send-binary") == 0 || |
| 3725 | strcmp(args[cur_arg], "send-lf") == 0 || strcmp(args[cur_arg], "send-binary-lf") == 0) |
| 3726 | chk = parse_tcpcheck_send(args, cur_arg, curpx, &rs->rules, file, line, errmsg); |
| 3727 | else if (strcmp(args[cur_arg], "expect") == 0) |
| 3728 | chk = parse_tcpcheck_expect(args, cur_arg, curpx, &rs->rules, 0, file, line, errmsg); |
| 3729 | else if (strcmp(args[cur_arg], "comment") == 0) |
| 3730 | chk = parse_tcpcheck_comment(args, cur_arg, curpx, &rs->rules, file, line, errmsg); |
| 3731 | else { |
| 3732 | struct action_kw *kw = action_kw_tcp_check_lookup(args[cur_arg]); |
| 3733 | |
| 3734 | if (!kw) { |
| 3735 | action_kw_tcp_check_build_list(&trash); |
| 3736 | memprintf(errmsg, "'%s' only supports 'comment', 'connect', 'send', 'send-binary', 'expect'" |
| 3737 | "%s%s. but got '%s'", |
| 3738 | args[0], (*trash.area ? ", " : ""), trash.area, args[1]); |
| 3739 | goto error; |
| 3740 | } |
| 3741 | chk = parse_tcpcheck_action(args, cur_arg, curpx, &rs->rules, kw, file, line, errmsg); |
| 3742 | } |
| 3743 | |
| 3744 | if (!chk) { |
| 3745 | memprintf(errmsg, "'%s %s' : %s.", args[0], args[1], *errmsg); |
| 3746 | goto error; |
| 3747 | } |
| 3748 | ret = (ret || (*errmsg != NULL)); /* Handle warning */ |
| 3749 | |
| 3750 | /* No error: add the tcp-check rule in the list */ |
| 3751 | chk->index = index; |
| 3752 | LIST_ADDQ(&rs->rules, &chk->list); |
| 3753 | |
| 3754 | if ((curpx->options2 & PR_O2_CHK_ANY) == PR_O2_TCPCHK_CHK && |
| 3755 | (curpx->tcpcheck_rules.flags & TCPCHK_RULES_PROTO_CHK) == TCPCHK_RULES_TCP_CHK) { |
| 3756 | /* Use this ruleset if the proxy already has tcp-check enabled */ |
| 3757 | curpx->tcpcheck_rules.list = &rs->rules; |
| 3758 | curpx->tcpcheck_rules.flags &= ~TCPCHK_RULES_UNUSED_TCP_RS; |
| 3759 | } |
| 3760 | else { |
| 3761 | /* mark this ruleset as unused for now */ |
| 3762 | curpx->tcpcheck_rules.flags |= TCPCHK_RULES_UNUSED_TCP_RS; |
| 3763 | } |
| 3764 | |
| 3765 | return ret; |
| 3766 | |
| 3767 | error: |
| 3768 | free_tcpcheck(chk, 0); |
| 3769 | free_tcpcheck_ruleset(rs); |
| 3770 | return -1; |
| 3771 | } |
| 3772 | |
Christopher Faulet | 97b7bdf | 2020-11-27 09:58:02 +0100 | [diff] [blame] | 3773 | /* Parses the "http-check" proxy keyword */ |
| 3774 | static int proxy_parse_httpcheck(char **args, int section, struct proxy *curpx, |
Willy Tarreau | 0182516 | 2021-03-09 09:53:46 +0100 | [diff] [blame] | 3775 | const struct proxy *defpx, const char *file, int line, |
Christopher Faulet | 97b7bdf | 2020-11-27 09:58:02 +0100 | [diff] [blame] | 3776 | char **errmsg) |
| 3777 | { |
| 3778 | struct tcpcheck_ruleset *rs = NULL; |
| 3779 | struct tcpcheck_rule *chk = NULL; |
| 3780 | int index, cur_arg, ret = 0; |
| 3781 | |
| 3782 | if (warnifnotcap(curpx, PR_CAP_BE, file, line, args[0], NULL)) |
| 3783 | ret = 1; |
| 3784 | |
| 3785 | cur_arg = 1; |
| 3786 | if (strcmp(args[cur_arg], "disable-on-404") == 0) { |
| 3787 | /* enable a graceful server shutdown on an HTTP 404 response */ |
| 3788 | curpx->options |= PR_O_DISABLE404; |
| 3789 | if (too_many_args(1, args, errmsg, NULL)) |
| 3790 | goto error; |
| 3791 | goto out; |
| 3792 | } |
| 3793 | else if (strcmp(args[cur_arg], "send-state") == 0) { |
| 3794 | /* enable emission of the apparent state of a server in HTTP checks */ |
| 3795 | curpx->options2 |= PR_O2_CHK_SNDST; |
| 3796 | if (too_many_args(1, args, errmsg, NULL)) |
| 3797 | goto error; |
| 3798 | goto out; |
| 3799 | } |
| 3800 | |
| 3801 | /* Deduce the ruleset name from the proxy info */ |
| 3802 | chunk_printf(&trash, "*http-check-%s_%s-%d", |
| 3803 | ((curpx == defpx) ? "defaults" : curpx->id), |
| 3804 | curpx->conf.file, curpx->conf.line); |
| 3805 | |
| 3806 | rs = find_tcpcheck_ruleset(b_orig(&trash)); |
| 3807 | if (rs == NULL) { |
| 3808 | rs = create_tcpcheck_ruleset(b_orig(&trash)); |
| 3809 | if (rs == NULL) { |
| 3810 | memprintf(errmsg, "out of memory.\n"); |
| 3811 | goto error; |
| 3812 | } |
| 3813 | } |
| 3814 | |
| 3815 | index = 0; |
| 3816 | if (!LIST_ISEMPTY(&rs->rules)) { |
| 3817 | chk = LIST_PREV(&rs->rules, typeof(chk), list); |
| 3818 | if (chk->action != TCPCHK_ACT_SEND || !(chk->send.http.flags & TCPCHK_SND_HTTP_FROM_OPT)) |
| 3819 | index = chk->index + 1; |
Christopher Faulet | cd03be7 | 2021-03-12 12:00:14 +0100 | [diff] [blame] | 3820 | chk = NULL; |
Christopher Faulet | 97b7bdf | 2020-11-27 09:58:02 +0100 | [diff] [blame] | 3821 | } |
| 3822 | |
| 3823 | if (strcmp(args[cur_arg], "connect") == 0) |
| 3824 | chk = parse_tcpcheck_connect(args, cur_arg, curpx, &rs->rules, file, line, errmsg); |
| 3825 | else if (strcmp(args[cur_arg], "send") == 0) |
| 3826 | chk = parse_tcpcheck_send_http(args, cur_arg, curpx, &rs->rules, file, line, errmsg); |
| 3827 | else if (strcmp(args[cur_arg], "expect") == 0) |
| 3828 | chk = parse_tcpcheck_expect(args, cur_arg, curpx, &rs->rules, TCPCHK_RULES_HTTP_CHK, |
| 3829 | file, line, errmsg); |
| 3830 | else if (strcmp(args[cur_arg], "comment") == 0) |
| 3831 | chk = parse_tcpcheck_comment(args, cur_arg, curpx, &rs->rules, file, line, errmsg); |
| 3832 | else { |
| 3833 | struct action_kw *kw = action_kw_tcp_check_lookup(args[cur_arg]); |
| 3834 | |
| 3835 | if (!kw) { |
| 3836 | action_kw_tcp_check_build_list(&trash); |
| 3837 | memprintf(errmsg, "'%s' only supports 'disable-on-404', 'send-state', 'comment', 'connect'," |
| 3838 | " 'send', 'expect'%s%s. but got '%s'", |
| 3839 | args[0], (*trash.area ? ", " : ""), trash.area, args[1]); |
| 3840 | goto error; |
| 3841 | } |
| 3842 | chk = parse_tcpcheck_action(args, cur_arg, curpx, &rs->rules, kw, file, line, errmsg); |
| 3843 | } |
| 3844 | |
| 3845 | if (!chk) { |
| 3846 | memprintf(errmsg, "'%s %s' : %s.", args[0], args[1], *errmsg); |
| 3847 | goto error; |
| 3848 | } |
| 3849 | ret = (*errmsg != NULL); /* Handle warning */ |
| 3850 | |
| 3851 | chk->index = index; |
| 3852 | if ((curpx->options2 & PR_O2_CHK_ANY) == PR_O2_TCPCHK_CHK && |
| 3853 | (curpx->tcpcheck_rules.flags & TCPCHK_RULES_PROTO_CHK) == TCPCHK_RULES_HTTP_CHK) { |
| 3854 | /* Use this ruleset if the proxy already has http-check enabled */ |
| 3855 | curpx->tcpcheck_rules.list = &rs->rules; |
| 3856 | curpx->tcpcheck_rules.flags &= ~TCPCHK_RULES_UNUSED_HTTP_RS; |
| 3857 | if (!tcpcheck_add_http_rule(chk, &curpx->tcpcheck_rules, errmsg)) { |
| 3858 | memprintf(errmsg, "'%s %s' : %s.", args[0], args[1], *errmsg); |
| 3859 | curpx->tcpcheck_rules.list = NULL; |
| 3860 | goto error; |
| 3861 | } |
| 3862 | } |
| 3863 | else { |
| 3864 | /* mark this ruleset as unused for now */ |
| 3865 | curpx->tcpcheck_rules.flags |= TCPCHK_RULES_UNUSED_HTTP_RS; |
| 3866 | LIST_ADDQ(&rs->rules, &chk->list); |
| 3867 | } |
| 3868 | |
| 3869 | out: |
| 3870 | return ret; |
| 3871 | |
| 3872 | error: |
| 3873 | free_tcpcheck(chk, 0); |
| 3874 | free_tcpcheck_ruleset(rs); |
| 3875 | return -1; |
| 3876 | } |
| 3877 | |
| 3878 | /* Parses the "option redis-check" proxy keyword */ |
Willy Tarreau | 54fa7e3 | 2021-02-12 12:09:38 +0100 | [diff] [blame] | 3879 | int proxy_parse_redis_check_opt(char **args, int cur_arg, struct proxy *curpx, const struct proxy *defpx, |
Christopher Faulet | 97b7bdf | 2020-11-27 09:58:02 +0100 | [diff] [blame] | 3880 | const char *file, int line) |
| 3881 | { |
| 3882 | static char *redis_req = "*1\r\n$4\r\nPING\r\n"; |
| 3883 | static char *redis_res = "+PONG\r\n"; |
| 3884 | |
| 3885 | struct tcpcheck_ruleset *rs = NULL; |
| 3886 | struct tcpcheck_rules *rules = &curpx->tcpcheck_rules; |
| 3887 | struct tcpcheck_rule *chk; |
| 3888 | char *errmsg = NULL; |
| 3889 | int err_code = 0; |
| 3890 | |
| 3891 | if (warnifnotcap(curpx, PR_CAP_BE, file, line, args[cur_arg+1], NULL)) |
| 3892 | err_code |= ERR_WARN; |
| 3893 | |
| 3894 | if (alertif_too_many_args_idx(0, 1, file, line, args, &err_code)) |
| 3895 | goto out; |
| 3896 | |
| 3897 | curpx->options2 &= ~PR_O2_CHK_ANY; |
| 3898 | curpx->options2 |= PR_O2_TCPCHK_CHK; |
| 3899 | |
| 3900 | free_tcpcheck_vars(&rules->preset_vars); |
| 3901 | rules->list = NULL; |
| 3902 | rules->flags = 0; |
| 3903 | |
| 3904 | rs = find_tcpcheck_ruleset("*redis-check"); |
| 3905 | if (rs) |
| 3906 | goto ruleset_found; |
| 3907 | |
| 3908 | rs = create_tcpcheck_ruleset("*redis-check"); |
| 3909 | if (rs == NULL) { |
| 3910 | ha_alert("parsing [%s:%d] : out of memory.\n", file, line); |
| 3911 | goto error; |
| 3912 | } |
| 3913 | |
| 3914 | chk = parse_tcpcheck_send((char *[]){"tcp-check", "send", redis_req, ""}, |
| 3915 | 1, curpx, &rs->rules, file, line, &errmsg); |
| 3916 | if (!chk) { |
| 3917 | ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg); |
| 3918 | goto error; |
| 3919 | } |
| 3920 | chk->index = 0; |
| 3921 | LIST_ADDQ(&rs->rules, &chk->list); |
| 3922 | |
| 3923 | chk = parse_tcpcheck_expect((char *[]){"tcp-check", "expect", "string", redis_res, |
| 3924 | "error-status", "L7STS", |
| 3925 | "on-error", "%[res.payload(0,0),cut_crlf]", |
| 3926 | "on-success", "Redis server is ok", |
| 3927 | ""}, |
| 3928 | 1, curpx, &rs->rules, TCPCHK_RULES_REDIS_CHK, file, line, &errmsg); |
| 3929 | if (!chk) { |
| 3930 | ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg); |
| 3931 | goto error; |
| 3932 | } |
| 3933 | chk->index = 1; |
| 3934 | LIST_ADDQ(&rs->rules, &chk->list); |
| 3935 | |
| 3936 | ruleset_found: |
| 3937 | rules->list = &rs->rules; |
| 3938 | rules->flags &= ~(TCPCHK_RULES_PROTO_CHK|TCPCHK_RULES_UNUSED_RS); |
| 3939 | rules->flags |= TCPCHK_RULES_REDIS_CHK; |
| 3940 | |
| 3941 | out: |
| 3942 | free(errmsg); |
| 3943 | return err_code; |
| 3944 | |
| 3945 | error: |
| 3946 | free_tcpcheck_ruleset(rs); |
| 3947 | err_code |= ERR_ALERT | ERR_FATAL; |
| 3948 | goto out; |
| 3949 | } |
| 3950 | |
| 3951 | |
| 3952 | /* Parses the "option ssl-hello-chk" proxy keyword */ |
Willy Tarreau | 54fa7e3 | 2021-02-12 12:09:38 +0100 | [diff] [blame] | 3953 | int proxy_parse_ssl_hello_chk_opt(char **args, int cur_arg, struct proxy *curpx, const struct proxy *defpx, |
Christopher Faulet | 97b7bdf | 2020-11-27 09:58:02 +0100 | [diff] [blame] | 3954 | const char *file, int line) |
| 3955 | { |
| 3956 | /* This is the SSLv3 CLIENT HELLO packet used in conjunction with the |
| 3957 | * ssl-hello-chk option to ensure that the remote server speaks SSL. |
| 3958 | * |
| 3959 | * Check RFC 2246 (TLSv1.0) sections A.3 and A.4 for details. |
| 3960 | */ |
| 3961 | static char sslv3_client_hello[] = { |
| 3962 | "16" /* ContentType : 0x16 = Handshake */ |
| 3963 | "0300" /* ProtocolVersion : 0x0300 = SSLv3 */ |
| 3964 | "0079" /* ContentLength : 0x79 bytes after this one */ |
| 3965 | "01" /* HanshakeType : 0x01 = CLIENT HELLO */ |
| 3966 | "000075" /* HandshakeLength : 0x75 bytes after this one */ |
| 3967 | "0300" /* Hello Version : 0x0300 = v3 */ |
| 3968 | "%[date(),htonl,hex]" /* Unix GMT Time (s) : filled with <now> (@0x0B) */ |
| 3969 | "%[str(HAPROXYSSLCHK\nHAPROXYSSLCHK\n),hex]" /* Random : must be exactly 28 bytes */ |
| 3970 | "00" /* Session ID length : empty (no session ID) */ |
| 3971 | "004E" /* Cipher Suite Length : 78 bytes after this one */ |
| 3972 | "0001" "0002" "0003" "0004" /* 39 most common ciphers : */ |
| 3973 | "0005" "0006" "0007" "0008" /* 0x01...0x1B, 0x2F...0x3A */ |
| 3974 | "0009" "000A" "000B" "000C" /* This covers RSA/DH, */ |
| 3975 | "000D" "000E" "000F" "0010" /* various bit lengths, */ |
| 3976 | "0011" "0012" "0013" "0014" /* SHA1/MD5, DES/3DES/AES... */ |
| 3977 | "0015" "0016" "0017" "0018" |
| 3978 | "0019" "001A" "001B" "002F" |
| 3979 | "0030" "0031" "0032" "0033" |
| 3980 | "0034" "0035" "0036" "0037" |
| 3981 | "0038" "0039" "003A" |
| 3982 | "01" /* Compression Length : 0x01 = 1 byte for types */ |
| 3983 | "00" /* Compression Type : 0x00 = NULL compression */ |
| 3984 | }; |
| 3985 | |
| 3986 | struct tcpcheck_ruleset *rs = NULL; |
| 3987 | struct tcpcheck_rules *rules = &curpx->tcpcheck_rules; |
| 3988 | struct tcpcheck_rule *chk; |
| 3989 | char *errmsg = NULL; |
| 3990 | int err_code = 0; |
| 3991 | |
| 3992 | if (warnifnotcap(curpx, PR_CAP_BE, file, line, args[cur_arg+1], NULL)) |
| 3993 | err_code |= ERR_WARN; |
| 3994 | |
| 3995 | if (alertif_too_many_args_idx(0, 1, file, line, args, &err_code)) |
| 3996 | goto out; |
| 3997 | |
| 3998 | curpx->options2 &= ~PR_O2_CHK_ANY; |
| 3999 | curpx->options2 |= PR_O2_TCPCHK_CHK; |
| 4000 | |
| 4001 | free_tcpcheck_vars(&rules->preset_vars); |
| 4002 | rules->list = NULL; |
| 4003 | rules->flags = 0; |
| 4004 | |
| 4005 | rs = find_tcpcheck_ruleset("*ssl-hello-check"); |
| 4006 | if (rs) |
| 4007 | goto ruleset_found; |
| 4008 | |
| 4009 | rs = create_tcpcheck_ruleset("*ssl-hello-check"); |
| 4010 | if (rs == NULL) { |
| 4011 | ha_alert("parsing [%s:%d] : out of memory.\n", file, line); |
| 4012 | goto error; |
| 4013 | } |
| 4014 | |
| 4015 | chk = parse_tcpcheck_send((char *[]){"tcp-check", "send-binary-lf", sslv3_client_hello, ""}, |
| 4016 | 1, curpx, &rs->rules, file, line, &errmsg); |
| 4017 | if (!chk) { |
| 4018 | ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg); |
| 4019 | goto error; |
| 4020 | } |
| 4021 | chk->index = 0; |
| 4022 | LIST_ADDQ(&rs->rules, &chk->list); |
| 4023 | |
| 4024 | chk = parse_tcpcheck_expect((char *[]){"tcp-check", "expect", "rbinary", "^1[56]", |
| 4025 | "min-recv", "5", "ok-status", "L6OK", |
| 4026 | "error-status", "L6RSP", "tout-status", "L6TOUT", |
| 4027 | ""}, |
| 4028 | 1, curpx, &rs->rules, TCPCHK_RULES_SSL3_CHK, file, line, &errmsg); |
| 4029 | if (!chk) { |
| 4030 | ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg); |
| 4031 | goto error; |
| 4032 | } |
| 4033 | chk->index = 1; |
| 4034 | LIST_ADDQ(&rs->rules, &chk->list); |
| 4035 | |
| 4036 | ruleset_found: |
| 4037 | rules->list = &rs->rules; |
| 4038 | rules->flags &= ~(TCPCHK_RULES_PROTO_CHK|TCPCHK_RULES_UNUSED_RS); |
| 4039 | rules->flags |= TCPCHK_RULES_SSL3_CHK; |
| 4040 | |
| 4041 | out: |
| 4042 | free(errmsg); |
| 4043 | return err_code; |
| 4044 | |
| 4045 | error: |
| 4046 | free_tcpcheck_ruleset(rs); |
| 4047 | err_code |= ERR_ALERT | ERR_FATAL; |
| 4048 | goto out; |
| 4049 | } |
| 4050 | |
| 4051 | /* Parses the "option smtpchk" proxy keyword */ |
Willy Tarreau | 54fa7e3 | 2021-02-12 12:09:38 +0100 | [diff] [blame] | 4052 | int proxy_parse_smtpchk_opt(char **args, int cur_arg, struct proxy *curpx, const struct proxy *defpx, |
Christopher Faulet | 97b7bdf | 2020-11-27 09:58:02 +0100 | [diff] [blame] | 4053 | const char *file, int line) |
| 4054 | { |
| 4055 | static char *smtp_req = "%[var(check.smtp_cmd)]\r\n"; |
| 4056 | |
| 4057 | struct tcpcheck_ruleset *rs = NULL; |
| 4058 | struct tcpcheck_rules *rules = &curpx->tcpcheck_rules; |
| 4059 | struct tcpcheck_rule *chk; |
| 4060 | struct tcpcheck_var *var = NULL; |
| 4061 | char *cmd = NULL, *errmsg = NULL; |
| 4062 | int err_code = 0; |
| 4063 | |
| 4064 | if (warnifnotcap(curpx, PR_CAP_BE, file, line, args[cur_arg+1], NULL)) |
| 4065 | err_code |= ERR_WARN; |
| 4066 | |
| 4067 | if (alertif_too_many_args_idx(2, 1, file, line, args, &err_code)) |
| 4068 | goto out; |
| 4069 | |
| 4070 | curpx->options2 &= ~PR_O2_CHK_ANY; |
| 4071 | curpx->options2 |= PR_O2_TCPCHK_CHK; |
| 4072 | |
| 4073 | free_tcpcheck_vars(&rules->preset_vars); |
| 4074 | rules->list = NULL; |
| 4075 | rules->flags = 0; |
| 4076 | |
| 4077 | cur_arg += 2; |
| 4078 | if (*args[cur_arg] && *args[cur_arg+1] && |
| 4079 | (strcmp(args[cur_arg], "EHLO") == 0 || strcmp(args[cur_arg], "HELO") == 0)) { |
| 4080 | /* <EHLO|HELO> + space (1) + <host> + null byte (1) */ |
| 4081 | cmd = calloc(strlen(args[cur_arg]) + 1 + strlen(args[cur_arg+1]) + 1, sizeof(*cmd)); |
| 4082 | if (cmd) |
| 4083 | sprintf(cmd, "%s %s", args[cur_arg], args[cur_arg+1]); |
| 4084 | } |
| 4085 | else { |
| 4086 | /* this just hits the default for now, but you could potentially expand it to allow for other stuff |
| 4087 | though, it's unlikely you'd want to send anything other than an EHLO or HELO */ |
| 4088 | cmd = strdup("HELO localhost"); |
| 4089 | } |
| 4090 | |
| 4091 | var = create_tcpcheck_var(ist("check.smtp_cmd")); |
| 4092 | if (cmd == NULL || var == NULL) { |
| 4093 | ha_alert("parsing [%s:%d] : out of memory.\n", file, line); |
| 4094 | goto error; |
| 4095 | } |
| 4096 | var->data.type = SMP_T_STR; |
| 4097 | var->data.u.str.area = cmd; |
| 4098 | var->data.u.str.data = strlen(cmd); |
| 4099 | LIST_INIT(&var->list); |
| 4100 | LIST_ADDQ(&rules->preset_vars, &var->list); |
| 4101 | cmd = NULL; |
| 4102 | var = NULL; |
| 4103 | |
| 4104 | rs = find_tcpcheck_ruleset("*smtp-check"); |
| 4105 | if (rs) |
| 4106 | goto ruleset_found; |
| 4107 | |
| 4108 | rs = create_tcpcheck_ruleset("*smtp-check"); |
| 4109 | if (rs == NULL) { |
| 4110 | ha_alert("parsing [%s:%d] : out of memory.\n", file, line); |
| 4111 | goto error; |
| 4112 | } |
| 4113 | |
| 4114 | chk = parse_tcpcheck_connect((char *[]){"tcp-check", "connect", "default", "linger", ""}, |
| 4115 | 1, curpx, &rs->rules, file, line, &errmsg); |
| 4116 | if (!chk) { |
| 4117 | ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg); |
| 4118 | goto error; |
| 4119 | } |
| 4120 | chk->index = 0; |
| 4121 | LIST_ADDQ(&rs->rules, &chk->list); |
| 4122 | |
| 4123 | chk = parse_tcpcheck_expect((char *[]){"tcp-check", "expect", "rstring", "^[0-9]{3}[ \r]", |
| 4124 | "min-recv", "4", |
| 4125 | "error-status", "L7RSP", |
| 4126 | "on-error", "%[res.payload(0,0),cut_crlf]", |
| 4127 | ""}, |
| 4128 | 1, curpx, &rs->rules, TCPCHK_RULES_SMTP_CHK, file, line, &errmsg); |
| 4129 | if (!chk) { |
| 4130 | ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg); |
| 4131 | goto error; |
| 4132 | } |
| 4133 | chk->index = 1; |
| 4134 | LIST_ADDQ(&rs->rules, &chk->list); |
| 4135 | |
| 4136 | chk = parse_tcpcheck_expect((char *[]){"tcp-check", "expect", "rstring", "^2[0-9]{2}[ \r]", |
| 4137 | "min-recv", "4", |
| 4138 | "error-status", "L7STS", |
| 4139 | "on-error", "%[res.payload(4,0),ltrim(' '),cut_crlf]", |
| 4140 | "status-code", "res.payload(0,3)", |
| 4141 | ""}, |
| 4142 | 1, curpx, &rs->rules, TCPCHK_RULES_SMTP_CHK, file, line, &errmsg); |
| 4143 | if (!chk) { |
| 4144 | ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg); |
| 4145 | goto error; |
| 4146 | } |
| 4147 | chk->index = 2; |
| 4148 | LIST_ADDQ(&rs->rules, &chk->list); |
| 4149 | |
| 4150 | chk = parse_tcpcheck_send((char *[]){"tcp-check", "send-lf", smtp_req, ""}, |
| 4151 | 1, curpx, &rs->rules, file, line, &errmsg); |
| 4152 | if (!chk) { |
| 4153 | ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg); |
| 4154 | goto error; |
| 4155 | } |
| 4156 | chk->index = 3; |
| 4157 | LIST_ADDQ(&rs->rules, &chk->list); |
| 4158 | |
| 4159 | chk = parse_tcpcheck_expect((char *[]){"tcp-check", "expect", "rstring", "^2[0-9]{2}[- \r]", |
| 4160 | "min-recv", "4", |
| 4161 | "error-status", "L7STS", |
| 4162 | "on-error", "%[res.payload(4,0),ltrim(' '),cut_crlf]", |
| 4163 | "on-success", "%[res.payload(4,0),ltrim(' '),cut_crlf]", |
| 4164 | "status-code", "res.payload(0,3)", |
| 4165 | ""}, |
| 4166 | 1, curpx, &rs->rules, TCPCHK_RULES_SMTP_CHK, file, line, &errmsg); |
| 4167 | if (!chk) { |
| 4168 | ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg); |
| 4169 | goto error; |
| 4170 | } |
| 4171 | chk->index = 4; |
| 4172 | LIST_ADDQ(&rs->rules, &chk->list); |
| 4173 | |
| 4174 | ruleset_found: |
| 4175 | rules->list = &rs->rules; |
| 4176 | rules->flags &= ~(TCPCHK_RULES_PROTO_CHK|TCPCHK_RULES_UNUSED_RS); |
| 4177 | rules->flags |= TCPCHK_RULES_SMTP_CHK; |
| 4178 | |
| 4179 | out: |
| 4180 | free(errmsg); |
| 4181 | return err_code; |
| 4182 | |
| 4183 | error: |
| 4184 | free(cmd); |
| 4185 | free(var); |
| 4186 | free_tcpcheck_vars(&rules->preset_vars); |
| 4187 | free_tcpcheck_ruleset(rs); |
| 4188 | err_code |= ERR_ALERT | ERR_FATAL; |
| 4189 | goto out; |
| 4190 | } |
| 4191 | |
| 4192 | /* Parses the "option pgsql-check" proxy keyword */ |
Willy Tarreau | 54fa7e3 | 2021-02-12 12:09:38 +0100 | [diff] [blame] | 4193 | int proxy_parse_pgsql_check_opt(char **args, int cur_arg, struct proxy *curpx, const struct proxy *defpx, |
Christopher Faulet | 97b7bdf | 2020-11-27 09:58:02 +0100 | [diff] [blame] | 4194 | const char *file, int line) |
| 4195 | { |
| 4196 | static char pgsql_req[] = { |
| 4197 | "%[var(check.plen),htonl,hex]" /* The packet length*/ |
| 4198 | "00030000" /* the version 3.0 */ |
| 4199 | "7573657200" /* "user" key */ |
| 4200 | "%[var(check.username),hex]00" /* the username */ |
| 4201 | "00" |
| 4202 | }; |
| 4203 | |
| 4204 | struct tcpcheck_ruleset *rs = NULL; |
| 4205 | struct tcpcheck_rules *rules = &curpx->tcpcheck_rules; |
| 4206 | struct tcpcheck_rule *chk; |
| 4207 | struct tcpcheck_var *var = NULL; |
| 4208 | char *user = NULL, *errmsg = NULL; |
| 4209 | size_t packetlen = 0; |
| 4210 | int err_code = 0; |
| 4211 | |
| 4212 | if (warnifnotcap(curpx, PR_CAP_BE, file, line, args[cur_arg+1], NULL)) |
| 4213 | err_code |= ERR_WARN; |
| 4214 | |
| 4215 | if (alertif_too_many_args_idx(2, 1, file, line, args, &err_code)) |
| 4216 | goto out; |
| 4217 | |
| 4218 | curpx->options2 &= ~PR_O2_CHK_ANY; |
| 4219 | curpx->options2 |= PR_O2_TCPCHK_CHK; |
| 4220 | |
| 4221 | free_tcpcheck_vars(&rules->preset_vars); |
| 4222 | rules->list = NULL; |
| 4223 | rules->flags = 0; |
| 4224 | |
| 4225 | cur_arg += 2; |
| 4226 | if (!*args[cur_arg] || !*args[cur_arg+1]) { |
| 4227 | ha_alert("parsing [%s:%d] : '%s %s' expects 'user <username>' as argument.\n", |
| 4228 | file, line, args[0], args[1]); |
| 4229 | goto error; |
| 4230 | } |
| 4231 | if (strcmp(args[cur_arg], "user") == 0) { |
| 4232 | packetlen = 15 + strlen(args[cur_arg+1]); |
| 4233 | user = strdup(args[cur_arg+1]); |
| 4234 | |
| 4235 | var = create_tcpcheck_var(ist("check.username")); |
| 4236 | if (user == NULL || var == NULL) { |
| 4237 | ha_alert("parsing [%s:%d] : out of memory.\n", file, line); |
| 4238 | goto error; |
| 4239 | } |
| 4240 | var->data.type = SMP_T_STR; |
| 4241 | var->data.u.str.area = user; |
| 4242 | var->data.u.str.data = strlen(user); |
| 4243 | LIST_INIT(&var->list); |
| 4244 | LIST_ADDQ(&rules->preset_vars, &var->list); |
| 4245 | user = NULL; |
| 4246 | var = NULL; |
| 4247 | |
| 4248 | var = create_tcpcheck_var(ist("check.plen")); |
| 4249 | if (var == NULL) { |
| 4250 | ha_alert("parsing [%s:%d] : out of memory.\n", file, line); |
| 4251 | goto error; |
| 4252 | } |
| 4253 | var->data.type = SMP_T_SINT; |
| 4254 | var->data.u.sint = packetlen; |
| 4255 | LIST_INIT(&var->list); |
| 4256 | LIST_ADDQ(&rules->preset_vars, &var->list); |
| 4257 | var = NULL; |
| 4258 | } |
| 4259 | else { |
| 4260 | ha_alert("parsing [%s:%d] : '%s %s' only supports optional values: 'user'.\n", |
| 4261 | file, line, args[0], args[1]); |
| 4262 | goto error; |
| 4263 | } |
| 4264 | |
| 4265 | rs = find_tcpcheck_ruleset("*pgsql-check"); |
| 4266 | if (rs) |
| 4267 | goto ruleset_found; |
| 4268 | |
| 4269 | rs = create_tcpcheck_ruleset("*pgsql-check"); |
| 4270 | if (rs == NULL) { |
| 4271 | ha_alert("parsing [%s:%d] : out of memory.\n", file, line); |
| 4272 | goto error; |
| 4273 | } |
| 4274 | |
| 4275 | chk = parse_tcpcheck_connect((char *[]){"tcp-check", "connect", "default", "linger", ""}, |
| 4276 | 1, curpx, &rs->rules, file, line, &errmsg); |
| 4277 | if (!chk) { |
| 4278 | ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg); |
| 4279 | goto error; |
| 4280 | } |
| 4281 | chk->index = 0; |
| 4282 | LIST_ADDQ(&rs->rules, &chk->list); |
| 4283 | |
| 4284 | chk = parse_tcpcheck_send((char *[]){"tcp-check", "send-binary-lf", pgsql_req, ""}, |
| 4285 | 1, curpx, &rs->rules, file, line, &errmsg); |
| 4286 | if (!chk) { |
| 4287 | ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg); |
| 4288 | goto error; |
| 4289 | } |
| 4290 | chk->index = 1; |
| 4291 | LIST_ADDQ(&rs->rules, &chk->list); |
| 4292 | |
| 4293 | chk = parse_tcpcheck_expect((char *[]){"tcp-check", "expect", "!rstring", "^E", |
| 4294 | "min-recv", "5", |
| 4295 | "error-status", "L7RSP", |
| 4296 | "on-error", "%[res.payload(6,0)]", |
| 4297 | ""}, |
| 4298 | 1, curpx, &rs->rules, TCPCHK_RULES_PGSQL_CHK, file, line, &errmsg); |
| 4299 | if (!chk) { |
| 4300 | ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg); |
| 4301 | goto error; |
| 4302 | } |
| 4303 | chk->index = 2; |
| 4304 | LIST_ADDQ(&rs->rules, &chk->list); |
| 4305 | |
| 4306 | chk = parse_tcpcheck_expect((char *[]){"tcp-check", "expect", "rbinary", "^52000000(08|0A|0C)000000(00|02|03|04|05|06)", |
| 4307 | "min-recv", "9", |
| 4308 | "error-status", "L7STS", |
| 4309 | "on-success", "PostgreSQL server is ok", |
| 4310 | "on-error", "PostgreSQL unknown error", |
| 4311 | ""}, |
| 4312 | 1, curpx, &rs->rules, TCPCHK_RULES_PGSQL_CHK, file, line, &errmsg); |
| 4313 | if (!chk) { |
| 4314 | ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg); |
| 4315 | goto error; |
| 4316 | } |
| 4317 | chk->index = 3; |
| 4318 | LIST_ADDQ(&rs->rules, &chk->list); |
| 4319 | |
| 4320 | ruleset_found: |
| 4321 | rules->list = &rs->rules; |
| 4322 | rules->flags &= ~(TCPCHK_RULES_PROTO_CHK|TCPCHK_RULES_UNUSED_RS); |
| 4323 | rules->flags |= TCPCHK_RULES_PGSQL_CHK; |
| 4324 | |
| 4325 | out: |
| 4326 | free(errmsg); |
| 4327 | return err_code; |
| 4328 | |
| 4329 | error: |
| 4330 | free(user); |
| 4331 | free(var); |
| 4332 | free_tcpcheck_vars(&rules->preset_vars); |
| 4333 | free_tcpcheck_ruleset(rs); |
| 4334 | err_code |= ERR_ALERT | ERR_FATAL; |
| 4335 | goto out; |
| 4336 | } |
| 4337 | |
| 4338 | |
| 4339 | /* Parses the "option mysql-check" proxy keyword */ |
Willy Tarreau | 54fa7e3 | 2021-02-12 12:09:38 +0100 | [diff] [blame] | 4340 | int proxy_parse_mysql_check_opt(char **args, int cur_arg, struct proxy *curpx, const struct proxy *defpx, |
Christopher Faulet | 97b7bdf | 2020-11-27 09:58:02 +0100 | [diff] [blame] | 4341 | const char *file, int line) |
| 4342 | { |
| 4343 | /* This is an example of a MySQL >=4.0 client Authentication packet kindly provided by Cyril Bonte. |
| 4344 | * const char mysql40_client_auth_pkt[] = { |
| 4345 | * "\x0e\x00\x00" // packet length |
| 4346 | * "\x01" // packet number |
| 4347 | * "\x00\x00" // client capabilities |
| 4348 | * "\x00\x00\x01" // max packet |
| 4349 | * "haproxy\x00" // username (null terminated string) |
| 4350 | * "\x00" // filler (always 0x00) |
| 4351 | * "\x01\x00\x00" // packet length |
| 4352 | * "\x00" // packet number |
| 4353 | * "\x01" // COM_QUIT command |
| 4354 | * }; |
| 4355 | */ |
| 4356 | static char mysql40_rsname[] = "*mysql40-check"; |
| 4357 | static char mysql40_req[] = { |
| 4358 | "%[var(check.header),hex]" /* 3 bytes for the packet length and 1 byte for the sequence ID */ |
| 4359 | "0080" /* client capabilities */ |
| 4360 | "000001" /* max packet */ |
| 4361 | "%[var(check.username),hex]00" /* the username */ |
| 4362 | "00" /* filler (always 0x00) */ |
| 4363 | "010000" /* packet length*/ |
| 4364 | "00" /* sequence ID */ |
| 4365 | "01" /* COM_QUIT command */ |
| 4366 | }; |
| 4367 | |
| 4368 | /* This is an example of a MySQL >=4.1 client Authentication packet provided by Nenad Merdanovic. |
| 4369 | * const char mysql41_client_auth_pkt[] = { |
| 4370 | * "\x0e\x00\x00\" // packet length |
| 4371 | * "\x01" // packet number |
| 4372 | * "\x00\x00\x00\x00" // client capabilities |
| 4373 | * "\x00\x00\x00\x01" // max packet |
| 4374 | * "\x21" // character set (UTF-8) |
| 4375 | * char[23] // All zeroes |
| 4376 | * "haproxy\x00" // username (null terminated string) |
| 4377 | * "\x00" // filler (always 0x00) |
| 4378 | * "\x01\x00\x00" // packet length |
| 4379 | * "\x00" // packet number |
| 4380 | * "\x01" // COM_QUIT command |
| 4381 | * }; |
| 4382 | */ |
| 4383 | static char mysql41_rsname[] = "*mysql41-check"; |
| 4384 | static char mysql41_req[] = { |
| 4385 | "%[var(check.header),hex]" /* 3 bytes for the packet length and 1 byte for the sequence ID */ |
| 4386 | "00820000" /* client capabilities */ |
| 4387 | "00800001" /* max packet */ |
| 4388 | "21" /* character set (UTF-8) */ |
| 4389 | "000000000000000000000000" /* 23 bytes, al zeroes */ |
| 4390 | "0000000000000000000000" |
| 4391 | "%[var(check.username),hex]00" /* the username */ |
| 4392 | "00" /* filler (always 0x00) */ |
| 4393 | "010000" /* packet length*/ |
| 4394 | "00" /* sequence ID */ |
| 4395 | "01" /* COM_QUIT command */ |
| 4396 | }; |
| 4397 | |
| 4398 | struct tcpcheck_ruleset *rs = NULL; |
| 4399 | struct tcpcheck_rules *rules = &curpx->tcpcheck_rules; |
| 4400 | struct tcpcheck_rule *chk; |
| 4401 | struct tcpcheck_var *var = NULL; |
| 4402 | char *mysql_rsname = "*mysql-check"; |
| 4403 | char *mysql_req = NULL, *hdr = NULL, *user = NULL, *errmsg = NULL; |
| 4404 | int index = 0, err_code = 0; |
| 4405 | |
| 4406 | if (warnifnotcap(curpx, PR_CAP_BE, file, line, args[cur_arg+1], NULL)) |
| 4407 | err_code |= ERR_WARN; |
| 4408 | |
| 4409 | if (alertif_too_many_args_idx(3, 1, file, line, args, &err_code)) |
| 4410 | goto out; |
| 4411 | |
| 4412 | curpx->options2 &= ~PR_O2_CHK_ANY; |
| 4413 | curpx->options2 |= PR_O2_TCPCHK_CHK; |
| 4414 | |
| 4415 | free_tcpcheck_vars(&rules->preset_vars); |
| 4416 | rules->list = NULL; |
| 4417 | rules->flags = 0; |
| 4418 | |
| 4419 | cur_arg += 2; |
| 4420 | if (*args[cur_arg]) { |
| 4421 | int packetlen, userlen; |
| 4422 | |
| 4423 | if (strcmp(args[cur_arg], "user") != 0) { |
| 4424 | ha_alert("parsing [%s:%d] : '%s %s' only supports optional values: 'user' (got '%s').\n", |
| 4425 | file, line, args[0], args[1], args[cur_arg]); |
| 4426 | goto error; |
| 4427 | } |
| 4428 | |
| 4429 | if (*(args[cur_arg+1]) == 0) { |
| 4430 | ha_alert("parsing [%s:%d] : '%s %s %s' expects <username> as argument.\n", |
| 4431 | file, line, args[0], args[1], args[cur_arg]); |
| 4432 | goto error; |
| 4433 | } |
| 4434 | |
| 4435 | hdr = calloc(4, sizeof(*hdr)); |
| 4436 | user = strdup(args[cur_arg+1]); |
| 4437 | userlen = strlen(args[cur_arg+1]); |
| 4438 | |
| 4439 | if (hdr == NULL || user == NULL) { |
| 4440 | ha_alert("parsing [%s:%d] : out of memory.\n", file, line); |
| 4441 | goto error; |
| 4442 | } |
| 4443 | |
| 4444 | if (!*args[cur_arg+2] || strcmp(args[cur_arg+2], "post-41") == 0) { |
| 4445 | packetlen = userlen + 7 + 27; |
| 4446 | mysql_req = mysql41_req; |
| 4447 | mysql_rsname = mysql41_rsname; |
| 4448 | } |
| 4449 | else if (strcmp(args[cur_arg+2], "pre-41") == 0) { |
| 4450 | packetlen = userlen + 7; |
| 4451 | mysql_req = mysql40_req; |
| 4452 | mysql_rsname = mysql40_rsname; |
| 4453 | } |
| 4454 | else { |
| 4455 | ha_alert("parsing [%s:%d] : keyword '%s' only supports 'post-41' and 'pre-41' (got '%s').\n", |
| 4456 | file, line, args[cur_arg], args[cur_arg+2]); |
| 4457 | goto error; |
| 4458 | } |
| 4459 | |
| 4460 | hdr[0] = (unsigned char)(packetlen & 0xff); |
| 4461 | hdr[1] = (unsigned char)((packetlen >> 8) & 0xff); |
| 4462 | hdr[2] = (unsigned char)((packetlen >> 16) & 0xff); |
| 4463 | hdr[3] = 1; |
| 4464 | |
| 4465 | var = create_tcpcheck_var(ist("check.header")); |
| 4466 | if (var == NULL) { |
| 4467 | ha_alert("parsing [%s:%d] : out of memory.\n", file, line); |
| 4468 | goto error; |
| 4469 | } |
| 4470 | var->data.type = SMP_T_STR; |
| 4471 | var->data.u.str.area = hdr; |
| 4472 | var->data.u.str.data = 4; |
| 4473 | LIST_INIT(&var->list); |
| 4474 | LIST_ADDQ(&rules->preset_vars, &var->list); |
| 4475 | hdr = NULL; |
| 4476 | var = NULL; |
| 4477 | |
| 4478 | var = create_tcpcheck_var(ist("check.username")); |
| 4479 | if (var == NULL) { |
| 4480 | ha_alert("parsing [%s:%d] : out of memory.\n", file, line); |
| 4481 | goto error; |
| 4482 | } |
| 4483 | var->data.type = SMP_T_STR; |
| 4484 | var->data.u.str.area = user; |
| 4485 | var->data.u.str.data = strlen(user); |
| 4486 | LIST_INIT(&var->list); |
| 4487 | LIST_ADDQ(&rules->preset_vars, &var->list); |
| 4488 | user = NULL; |
| 4489 | var = NULL; |
| 4490 | } |
| 4491 | |
| 4492 | rs = find_tcpcheck_ruleset(mysql_rsname); |
| 4493 | if (rs) |
| 4494 | goto ruleset_found; |
| 4495 | |
| 4496 | rs = create_tcpcheck_ruleset(mysql_rsname); |
| 4497 | if (rs == NULL) { |
| 4498 | ha_alert("parsing [%s:%d] : out of memory.\n", file, line); |
| 4499 | goto error; |
| 4500 | } |
| 4501 | |
| 4502 | chk = parse_tcpcheck_connect((char *[]){"tcp-check", "connect", "default", "linger", ""}, |
| 4503 | 1, curpx, &rs->rules, file, line, &errmsg); |
| 4504 | if (!chk) { |
| 4505 | ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg); |
| 4506 | goto error; |
| 4507 | } |
| 4508 | chk->index = index++; |
| 4509 | LIST_ADDQ(&rs->rules, &chk->list); |
| 4510 | |
| 4511 | if (mysql_req) { |
| 4512 | chk = parse_tcpcheck_send((char *[]){"tcp-check", "send-binary-lf", mysql_req, ""}, |
| 4513 | 1, curpx, &rs->rules, file, line, &errmsg); |
| 4514 | if (!chk) { |
| 4515 | ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg); |
| 4516 | goto error; |
| 4517 | } |
| 4518 | chk->index = index++; |
| 4519 | LIST_ADDQ(&rs->rules, &chk->list); |
| 4520 | } |
| 4521 | |
| 4522 | chk = parse_tcpcheck_expect((char *[]){"tcp-check", "expect", "custom", ""}, |
| 4523 | 1, curpx, &rs->rules, TCPCHK_RULES_MYSQL_CHK, file, line, &errmsg); |
| 4524 | if (!chk) { |
| 4525 | ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg); |
| 4526 | goto error; |
| 4527 | } |
| 4528 | chk->expect.custom = tcpcheck_mysql_expect_iniths; |
| 4529 | chk->index = index++; |
| 4530 | LIST_ADDQ(&rs->rules, &chk->list); |
| 4531 | |
| 4532 | if (mysql_req) { |
| 4533 | chk = parse_tcpcheck_expect((char *[]){"tcp-check", "expect", "custom", ""}, |
| 4534 | 1, curpx, &rs->rules, TCPCHK_RULES_MYSQL_CHK, file, line, &errmsg); |
| 4535 | if (!chk) { |
| 4536 | ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg); |
| 4537 | goto error; |
| 4538 | } |
| 4539 | chk->expect.custom = tcpcheck_mysql_expect_ok; |
| 4540 | chk->index = index++; |
| 4541 | LIST_ADDQ(&rs->rules, &chk->list); |
| 4542 | } |
| 4543 | |
| 4544 | ruleset_found: |
| 4545 | rules->list = &rs->rules; |
| 4546 | rules->flags &= ~(TCPCHK_RULES_PROTO_CHK|TCPCHK_RULES_UNUSED_RS); |
| 4547 | rules->flags |= TCPCHK_RULES_MYSQL_CHK; |
| 4548 | |
| 4549 | out: |
| 4550 | free(errmsg); |
| 4551 | return err_code; |
| 4552 | |
| 4553 | error: |
| 4554 | free(hdr); |
| 4555 | free(user); |
| 4556 | free(var); |
| 4557 | free_tcpcheck_vars(&rules->preset_vars); |
| 4558 | free_tcpcheck_ruleset(rs); |
| 4559 | err_code |= ERR_ALERT | ERR_FATAL; |
| 4560 | goto out; |
| 4561 | } |
| 4562 | |
Willy Tarreau | 54fa7e3 | 2021-02-12 12:09:38 +0100 | [diff] [blame] | 4563 | int proxy_parse_ldap_check_opt(char **args, int cur_arg, struct proxy *curpx, const struct proxy *defpx, |
Christopher Faulet | 97b7bdf | 2020-11-27 09:58:02 +0100 | [diff] [blame] | 4564 | const char *file, int line) |
| 4565 | { |
| 4566 | static char *ldap_req = "300C020101600702010304008000"; |
| 4567 | |
| 4568 | struct tcpcheck_ruleset *rs = NULL; |
| 4569 | struct tcpcheck_rules *rules = &curpx->tcpcheck_rules; |
| 4570 | struct tcpcheck_rule *chk; |
| 4571 | char *errmsg = NULL; |
| 4572 | int err_code = 0; |
| 4573 | |
| 4574 | if (warnifnotcap(curpx, PR_CAP_BE, file, line, args[cur_arg+1], NULL)) |
| 4575 | err_code |= ERR_WARN; |
| 4576 | |
| 4577 | if (alertif_too_many_args_idx(0, 1, file, line, args, &err_code)) |
| 4578 | goto out; |
| 4579 | |
| 4580 | curpx->options2 &= ~PR_O2_CHK_ANY; |
| 4581 | curpx->options2 |= PR_O2_TCPCHK_CHK; |
| 4582 | |
| 4583 | free_tcpcheck_vars(&rules->preset_vars); |
| 4584 | rules->list = NULL; |
| 4585 | rules->flags = 0; |
| 4586 | |
| 4587 | rs = find_tcpcheck_ruleset("*ldap-check"); |
| 4588 | if (rs) |
| 4589 | goto ruleset_found; |
| 4590 | |
| 4591 | rs = create_tcpcheck_ruleset("*ldap-check"); |
| 4592 | if (rs == NULL) { |
| 4593 | ha_alert("parsing [%s:%d] : out of memory.\n", file, line); |
| 4594 | goto error; |
| 4595 | } |
| 4596 | |
| 4597 | chk = parse_tcpcheck_send((char *[]){"tcp-check", "send-binary", ldap_req, ""}, |
| 4598 | 1, curpx, &rs->rules, file, line, &errmsg); |
| 4599 | if (!chk) { |
| 4600 | ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg); |
| 4601 | goto error; |
| 4602 | } |
| 4603 | chk->index = 0; |
| 4604 | LIST_ADDQ(&rs->rules, &chk->list); |
| 4605 | |
| 4606 | chk = parse_tcpcheck_expect((char *[]){"tcp-check", "expect", "rbinary", "^30", |
| 4607 | "min-recv", "14", |
| 4608 | "on-error", "Not LDAPv3 protocol", |
| 4609 | ""}, |
| 4610 | 1, curpx, &rs->rules, TCPCHK_RULES_LDAP_CHK, file, line, &errmsg); |
| 4611 | if (!chk) { |
| 4612 | ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg); |
| 4613 | goto error; |
| 4614 | } |
| 4615 | chk->index = 1; |
| 4616 | LIST_ADDQ(&rs->rules, &chk->list); |
| 4617 | |
| 4618 | chk = parse_tcpcheck_expect((char *[]){"tcp-check", "expect", "custom", ""}, |
| 4619 | 1, curpx, &rs->rules, TCPCHK_RULES_LDAP_CHK, file, line, &errmsg); |
| 4620 | if (!chk) { |
| 4621 | ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg); |
| 4622 | goto error; |
| 4623 | } |
| 4624 | chk->expect.custom = tcpcheck_ldap_expect_bindrsp; |
| 4625 | chk->index = 2; |
| 4626 | LIST_ADDQ(&rs->rules, &chk->list); |
| 4627 | |
| 4628 | ruleset_found: |
| 4629 | rules->list = &rs->rules; |
| 4630 | rules->flags &= ~(TCPCHK_RULES_PROTO_CHK|TCPCHK_RULES_UNUSED_RS); |
| 4631 | rules->flags |= TCPCHK_RULES_LDAP_CHK; |
| 4632 | |
| 4633 | out: |
| 4634 | free(errmsg); |
| 4635 | return err_code; |
| 4636 | |
| 4637 | error: |
| 4638 | free_tcpcheck_ruleset(rs); |
| 4639 | err_code |= ERR_ALERT | ERR_FATAL; |
| 4640 | goto out; |
| 4641 | } |
| 4642 | |
Willy Tarreau | 54fa7e3 | 2021-02-12 12:09:38 +0100 | [diff] [blame] | 4643 | int proxy_parse_spop_check_opt(char **args, int cur_arg, struct proxy *curpx, const struct proxy *defpx, |
Christopher Faulet | 97b7bdf | 2020-11-27 09:58:02 +0100 | [diff] [blame] | 4644 | const char *file, int line) |
| 4645 | { |
| 4646 | struct tcpcheck_ruleset *rs = NULL; |
| 4647 | struct tcpcheck_rules *rules = &curpx->tcpcheck_rules; |
| 4648 | struct tcpcheck_rule *chk; |
| 4649 | char *spop_req = NULL; |
| 4650 | char *errmsg = NULL; |
| 4651 | int spop_len = 0, err_code = 0; |
| 4652 | |
| 4653 | if (warnifnotcap(curpx, PR_CAP_BE, file, line, args[cur_arg+1], NULL)) |
| 4654 | err_code |= ERR_WARN; |
| 4655 | |
| 4656 | if (alertif_too_many_args_idx(0, 1, file, line, args, &err_code)) |
| 4657 | goto out; |
| 4658 | |
| 4659 | curpx->options2 &= ~PR_O2_CHK_ANY; |
| 4660 | curpx->options2 |= PR_O2_TCPCHK_CHK; |
| 4661 | |
| 4662 | free_tcpcheck_vars(&rules->preset_vars); |
| 4663 | rules->list = NULL; |
| 4664 | rules->flags = 0; |
| 4665 | |
| 4666 | |
| 4667 | rs = find_tcpcheck_ruleset("*spop-check"); |
| 4668 | if (rs) |
| 4669 | goto ruleset_found; |
| 4670 | |
| 4671 | rs = create_tcpcheck_ruleset("*spop-check"); |
| 4672 | if (rs == NULL) { |
| 4673 | ha_alert("parsing [%s:%d] : out of memory.\n", file, line); |
| 4674 | goto error; |
| 4675 | } |
| 4676 | |
| 4677 | if (spoe_prepare_healthcheck_request(&spop_req, &spop_len) == -1) { |
| 4678 | ha_alert("parsing [%s:%d] : out of memory.\n", file, line); |
| 4679 | goto error; |
| 4680 | } |
| 4681 | chunk_reset(&trash); |
| 4682 | dump_binary(&trash, spop_req, spop_len); |
| 4683 | trash.area[trash.data] = '\0'; |
| 4684 | |
| 4685 | chk = parse_tcpcheck_send((char *[]){"tcp-check", "send-binary", b_head(&trash), ""}, |
| 4686 | 1, curpx, &rs->rules, file, line, &errmsg); |
| 4687 | if (!chk) { |
| 4688 | ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg); |
| 4689 | goto error; |
| 4690 | } |
| 4691 | chk->index = 0; |
| 4692 | LIST_ADDQ(&rs->rules, &chk->list); |
| 4693 | |
| 4694 | chk = parse_tcpcheck_expect((char *[]){"tcp-check", "expect", "custom", "min-recv", "4", ""}, |
| 4695 | 1, curpx, &rs->rules, TCPCHK_RULES_SPOP_CHK, file, line, &errmsg); |
| 4696 | if (!chk) { |
| 4697 | ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg); |
| 4698 | goto error; |
| 4699 | } |
| 4700 | chk->expect.custom = tcpcheck_spop_expect_agenthello; |
| 4701 | chk->index = 1; |
| 4702 | LIST_ADDQ(&rs->rules, &chk->list); |
| 4703 | |
| 4704 | ruleset_found: |
| 4705 | rules->list = &rs->rules; |
| 4706 | rules->flags &= ~(TCPCHK_RULES_PROTO_CHK|TCPCHK_RULES_UNUSED_RS); |
| 4707 | rules->flags |= TCPCHK_RULES_SPOP_CHK; |
| 4708 | |
| 4709 | out: |
| 4710 | free(spop_req); |
| 4711 | free(errmsg); |
| 4712 | return err_code; |
| 4713 | |
| 4714 | error: |
| 4715 | free_tcpcheck_ruleset(rs); |
| 4716 | err_code |= ERR_ALERT | ERR_FATAL; |
| 4717 | goto out; |
| 4718 | } |
| 4719 | |
| 4720 | |
| 4721 | static struct tcpcheck_rule *proxy_parse_httpchk_req(char **args, int cur_arg, struct proxy *px, char **errmsg) |
| 4722 | { |
| 4723 | struct tcpcheck_rule *chk = NULL; |
| 4724 | struct tcpcheck_http_hdr *hdr = NULL; |
| 4725 | char *meth = NULL, *uri = NULL, *vsn = NULL; |
| 4726 | char *hdrs, *body; |
| 4727 | |
| 4728 | hdrs = (*args[cur_arg+2] ? strstr(args[cur_arg+2], "\r\n") : NULL); |
| 4729 | body = (*args[cur_arg+2] ? strstr(args[cur_arg+2], "\r\n\r\n") : NULL); |
| 4730 | if (hdrs == body) |
| 4731 | hdrs = NULL; |
| 4732 | if (hdrs) { |
| 4733 | *hdrs = '\0'; |
| 4734 | hdrs +=2; |
| 4735 | } |
| 4736 | if (body) { |
| 4737 | *body = '\0'; |
| 4738 | body += 4; |
| 4739 | } |
| 4740 | if (hdrs || body) { |
| 4741 | memprintf(errmsg, "hiding headers or body at the end of the version string is deprecated." |
| 4742 | " Please, consider to use 'http-check send' directive instead."); |
| 4743 | } |
| 4744 | |
| 4745 | chk = calloc(1, sizeof(*chk)); |
| 4746 | if (!chk) { |
| 4747 | memprintf(errmsg, "out of memory"); |
| 4748 | goto error; |
| 4749 | } |
| 4750 | chk->action = TCPCHK_ACT_SEND; |
| 4751 | chk->send.type = TCPCHK_SEND_HTTP; |
| 4752 | chk->send.http.flags |= TCPCHK_SND_HTTP_FROM_OPT; |
| 4753 | chk->send.http.meth.meth = HTTP_METH_OPTIONS; |
| 4754 | LIST_INIT(&chk->send.http.hdrs); |
| 4755 | |
| 4756 | /* Copy the method, uri and version */ |
| 4757 | if (*args[cur_arg]) { |
| 4758 | if (!*args[cur_arg+1]) |
| 4759 | uri = args[cur_arg]; |
| 4760 | else |
| 4761 | meth = args[cur_arg]; |
| 4762 | } |
| 4763 | if (*args[cur_arg+1]) |
| 4764 | uri = args[cur_arg+1]; |
| 4765 | if (*args[cur_arg+2]) |
| 4766 | vsn = args[cur_arg+2]; |
| 4767 | |
| 4768 | if (meth) { |
| 4769 | chk->send.http.meth.meth = find_http_meth(meth, strlen(meth)); |
| 4770 | chk->send.http.meth.str.area = strdup(meth); |
| 4771 | chk->send.http.meth.str.data = strlen(meth); |
| 4772 | if (!chk->send.http.meth.str.area) { |
| 4773 | memprintf(errmsg, "out of memory"); |
| 4774 | goto error; |
| 4775 | } |
| 4776 | } |
| 4777 | if (uri) { |
Tim Duesterhus | dcf753a | 2021-03-04 17:31:47 +0100 | [diff] [blame] | 4778 | chk->send.http.uri = ist(strdup(uri)); |
Christopher Faulet | 97b7bdf | 2020-11-27 09:58:02 +0100 | [diff] [blame] | 4779 | if (!isttest(chk->send.http.uri)) { |
| 4780 | memprintf(errmsg, "out of memory"); |
| 4781 | goto error; |
| 4782 | } |
| 4783 | } |
| 4784 | if (vsn) { |
Tim Duesterhus | dcf753a | 2021-03-04 17:31:47 +0100 | [diff] [blame] | 4785 | chk->send.http.vsn = ist(strdup(vsn)); |
Christopher Faulet | 97b7bdf | 2020-11-27 09:58:02 +0100 | [diff] [blame] | 4786 | if (!isttest(chk->send.http.vsn)) { |
| 4787 | memprintf(errmsg, "out of memory"); |
| 4788 | goto error; |
| 4789 | } |
| 4790 | } |
| 4791 | |
| 4792 | /* Copy the header */ |
| 4793 | if (hdrs) { |
| 4794 | struct http_hdr tmp_hdrs[global.tune.max_http_hdr]; |
| 4795 | struct h1m h1m; |
| 4796 | int i, ret; |
| 4797 | |
| 4798 | /* Build and parse the request */ |
| 4799 | chunk_printf(&trash, "%s\r\n\r\n", hdrs); |
| 4800 | |
| 4801 | h1m.flags = H1_MF_HDRS_ONLY; |
| 4802 | ret = h1_headers_to_hdr_list(b_orig(&trash), b_tail(&trash), |
| 4803 | tmp_hdrs, sizeof(tmp_hdrs)/sizeof(tmp_hdrs[0]), |
| 4804 | &h1m, NULL); |
| 4805 | if (ret <= 0) { |
| 4806 | memprintf(errmsg, "unable to parse the request '%s'.", b_orig(&trash)); |
| 4807 | goto error; |
| 4808 | } |
| 4809 | |
| 4810 | for (i = 0; istlen(tmp_hdrs[i].n); i++) { |
| 4811 | hdr = calloc(1, sizeof(*hdr)); |
| 4812 | if (!hdr) { |
| 4813 | memprintf(errmsg, "out of memory"); |
| 4814 | goto error; |
| 4815 | } |
| 4816 | LIST_INIT(&hdr->value); |
| 4817 | hdr->name = istdup(tmp_hdrs[i].n); |
| 4818 | if (!hdr->name.ptr) { |
| 4819 | memprintf(errmsg, "out of memory"); |
| 4820 | goto error; |
| 4821 | } |
| 4822 | |
| 4823 | ist0(tmp_hdrs[i].v); |
| 4824 | if (!parse_logformat_string(istptr(tmp_hdrs[i].v), px, &hdr->value, 0, SMP_VAL_BE_CHK_RUL, errmsg)) |
| 4825 | goto error; |
| 4826 | LIST_ADDQ(&chk->send.http.hdrs, &hdr->list); |
| 4827 | } |
| 4828 | } |
| 4829 | |
| 4830 | /* Copy the body */ |
| 4831 | if (body) { |
Tim Duesterhus | dcf753a | 2021-03-04 17:31:47 +0100 | [diff] [blame] | 4832 | chk->send.http.body = ist(strdup(body)); |
Christopher Faulet | 97b7bdf | 2020-11-27 09:58:02 +0100 | [diff] [blame] | 4833 | if (!isttest(chk->send.http.body)) { |
| 4834 | memprintf(errmsg, "out of memory"); |
| 4835 | goto error; |
| 4836 | } |
| 4837 | } |
| 4838 | |
| 4839 | return chk; |
| 4840 | |
| 4841 | error: |
| 4842 | free_tcpcheck_http_hdr(hdr); |
| 4843 | free_tcpcheck(chk, 0); |
| 4844 | return NULL; |
| 4845 | } |
| 4846 | |
| 4847 | /* Parses the "option httpchck" proxy keyword */ |
Willy Tarreau | 54fa7e3 | 2021-02-12 12:09:38 +0100 | [diff] [blame] | 4848 | int proxy_parse_httpchk_opt(char **args, int cur_arg, struct proxy *curpx, const struct proxy *defpx, |
Christopher Faulet | 97b7bdf | 2020-11-27 09:58:02 +0100 | [diff] [blame] | 4849 | const char *file, int line) |
| 4850 | { |
| 4851 | struct tcpcheck_ruleset *rs = NULL; |
| 4852 | struct tcpcheck_rules *rules = &curpx->tcpcheck_rules; |
| 4853 | struct tcpcheck_rule *chk; |
| 4854 | char *errmsg = NULL; |
| 4855 | int err_code = 0; |
| 4856 | |
| 4857 | if (warnifnotcap(curpx, PR_CAP_BE, file, line, args[cur_arg+1], NULL)) |
| 4858 | err_code |= ERR_WARN; |
| 4859 | |
| 4860 | if (alertif_too_many_args_idx(3, 1, file, line, args, &err_code)) |
| 4861 | goto out; |
| 4862 | |
| 4863 | chk = proxy_parse_httpchk_req(args, cur_arg+2, curpx, &errmsg); |
| 4864 | if (!chk) { |
| 4865 | ha_alert("parsing [%s:%d] : '%s %s' : %s.\n", file, line, args[0], args[1], errmsg); |
| 4866 | goto error; |
| 4867 | } |
| 4868 | if (errmsg) { |
| 4869 | ha_warning("parsing [%s:%d]: '%s %s' : %s\n", file, line, args[0], args[1], errmsg); |
| 4870 | err_code |= ERR_WARN; |
Willy Tarreau | 61cfdf4 | 2021-02-20 10:46:51 +0100 | [diff] [blame] | 4871 | ha_free(&errmsg); |
Christopher Faulet | 97b7bdf | 2020-11-27 09:58:02 +0100 | [diff] [blame] | 4872 | } |
| 4873 | |
| 4874 | no_request: |
| 4875 | curpx->options2 &= ~PR_O2_CHK_ANY; |
| 4876 | curpx->options2 |= PR_O2_TCPCHK_CHK; |
| 4877 | |
| 4878 | free_tcpcheck_vars(&rules->preset_vars); |
| 4879 | rules->list = NULL; |
| 4880 | rules->flags |= TCPCHK_SND_HTTP_FROM_OPT; |
| 4881 | |
| 4882 | /* Deduce the ruleset name from the proxy info */ |
| 4883 | chunk_printf(&trash, "*http-check-%s_%s-%d", |
| 4884 | ((curpx == defpx) ? "defaults" : curpx->id), |
| 4885 | curpx->conf.file, curpx->conf.line); |
| 4886 | |
| 4887 | rs = find_tcpcheck_ruleset(b_orig(&trash)); |
| 4888 | if (rs == NULL) { |
| 4889 | rs = create_tcpcheck_ruleset(b_orig(&trash)); |
| 4890 | if (rs == NULL) { |
| 4891 | ha_alert("parsing [%s:%d] : out of memory.\n", file, line); |
| 4892 | goto error; |
| 4893 | } |
| 4894 | } |
| 4895 | |
| 4896 | rules->list = &rs->rules; |
| 4897 | rules->flags &= ~(TCPCHK_RULES_PROTO_CHK|TCPCHK_RULES_UNUSED_RS); |
| 4898 | rules->flags |= TCPCHK_RULES_HTTP_CHK; |
| 4899 | if (!tcpcheck_add_http_rule(chk, rules, &errmsg)) { |
| 4900 | ha_alert("parsing [%s:%d] : '%s %s' : %s.\n", file, line, args[0], args[1], errmsg); |
| 4901 | rules->list = NULL; |
| 4902 | goto error; |
| 4903 | } |
| 4904 | |
| 4905 | out: |
| 4906 | free(errmsg); |
| 4907 | return err_code; |
| 4908 | |
| 4909 | error: |
| 4910 | free_tcpcheck_ruleset(rs); |
| 4911 | free_tcpcheck(chk, 0); |
| 4912 | err_code |= ERR_ALERT | ERR_FATAL; |
| 4913 | goto out; |
| 4914 | } |
| 4915 | |
| 4916 | /* Parses the "option tcp-check" proxy keyword */ |
Willy Tarreau | 54fa7e3 | 2021-02-12 12:09:38 +0100 | [diff] [blame] | 4917 | int proxy_parse_tcp_check_opt(char **args, int cur_arg, struct proxy *curpx, const struct proxy *defpx, |
Christopher Faulet | 97b7bdf | 2020-11-27 09:58:02 +0100 | [diff] [blame] | 4918 | const char *file, int line) |
| 4919 | { |
| 4920 | struct tcpcheck_ruleset *rs = NULL; |
| 4921 | struct tcpcheck_rules *rules = &curpx->tcpcheck_rules; |
| 4922 | int err_code = 0; |
| 4923 | |
| 4924 | if (warnifnotcap(curpx, PR_CAP_BE, file, line, args[cur_arg+1], NULL)) |
| 4925 | err_code |= ERR_WARN; |
| 4926 | |
| 4927 | if (alertif_too_many_args_idx(0, 1, file, line, args, &err_code)) |
| 4928 | goto out; |
| 4929 | |
| 4930 | curpx->options2 &= ~PR_O2_CHK_ANY; |
| 4931 | curpx->options2 |= PR_O2_TCPCHK_CHK; |
| 4932 | |
| 4933 | if ((rules->flags & TCPCHK_RULES_PROTO_CHK) == TCPCHK_RULES_TCP_CHK) { |
| 4934 | /* If a tcp-check rulesset is already set, do nothing */ |
| 4935 | if (rules->list) |
| 4936 | goto out; |
| 4937 | |
| 4938 | /* If a tcp-check ruleset is waiting to be used for the current proxy, |
| 4939 | * get it. |
| 4940 | */ |
| 4941 | if (rules->flags & TCPCHK_RULES_UNUSED_TCP_RS) |
| 4942 | goto curpx_ruleset; |
| 4943 | |
| 4944 | /* Otherwise, try to get the tcp-check ruleset of the default proxy */ |
| 4945 | chunk_printf(&trash, "*tcp-check-defaults_%s-%d", defpx->conf.file, defpx->conf.line); |
| 4946 | rs = find_tcpcheck_ruleset(b_orig(&trash)); |
| 4947 | if (rs) |
| 4948 | goto ruleset_found; |
| 4949 | } |
| 4950 | |
| 4951 | curpx_ruleset: |
| 4952 | /* Deduce the ruleset name from the proxy info */ |
| 4953 | chunk_printf(&trash, "*tcp-check-%s_%s-%d", |
| 4954 | ((curpx == defpx) ? "defaults" : curpx->id), |
| 4955 | curpx->conf.file, curpx->conf.line); |
| 4956 | |
| 4957 | rs = find_tcpcheck_ruleset(b_orig(&trash)); |
| 4958 | if (rs == NULL) { |
| 4959 | rs = create_tcpcheck_ruleset(b_orig(&trash)); |
| 4960 | if (rs == NULL) { |
| 4961 | ha_alert("parsing [%s:%d] : out of memory.\n", file, line); |
| 4962 | goto error; |
| 4963 | } |
| 4964 | } |
| 4965 | |
| 4966 | ruleset_found: |
| 4967 | free_tcpcheck_vars(&rules->preset_vars); |
| 4968 | rules->list = &rs->rules; |
| 4969 | rules->flags &= ~(TCPCHK_RULES_PROTO_CHK|TCPCHK_RULES_UNUSED_RS); |
| 4970 | rules->flags |= TCPCHK_RULES_TCP_CHK; |
| 4971 | |
| 4972 | out: |
| 4973 | return err_code; |
| 4974 | |
| 4975 | error: |
| 4976 | err_code |= ERR_ALERT | ERR_FATAL; |
| 4977 | goto out; |
| 4978 | } |
| 4979 | |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 4980 | static struct cfg_kw_list cfg_kws = {ILH, { |
Christopher Faulet | 97b7bdf | 2020-11-27 09:58:02 +0100 | [diff] [blame] | 4981 | { CFG_LISTEN, "http-check", proxy_parse_httpcheck }, |
Willy Tarreau | 51cd595 | 2020-06-05 12:25:38 +0200 | [diff] [blame] | 4982 | { CFG_LISTEN, "tcp-check", proxy_parse_tcpcheck }, |
| 4983 | { 0, NULL, NULL }, |
| 4984 | }}; |
| 4985 | |
| 4986 | REGISTER_POST_PROXY_CHECK(check_proxy_tcpcheck); |
| 4987 | REGISTER_PROXY_DEINIT(deinit_proxy_tcpcheck); |
| 4988 | REGISTER_POST_DEINIT(deinit_tcpchecks); |
| 4989 | INITCALL1(STG_REGISTER, cfg_register_keywords, &cfg_kws); |