Willy Tarreau | 61c112a | 2018-10-02 16:43:32 +0200 | [diff] [blame] | 1 | /* |
| 2 | * HTTP rules parsing and registration |
| 3 | * |
| 4 | * Copyright 2000-2018 Willy Tarreau <w@1wt.eu> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU General Public License |
| 8 | * as published by the Free Software Foundation; either version |
| 9 | * 2 of the License, or (at your option) any later version. |
| 10 | * |
| 11 | */ |
| 12 | |
| 13 | #include <sys/types.h> |
| 14 | |
| 15 | #include <ctype.h> |
| 16 | #include <string.h> |
| 17 | #include <time.h> |
| 18 | |
| 19 | #include <common/cfgparse.h> |
| 20 | #include <common/chunk.h> |
| 21 | #include <common/compat.h> |
| 22 | #include <common/config.h> |
| 23 | #include <common/debug.h> |
| 24 | #include <common/http.h> |
| 25 | #include <common/memory.h> |
| 26 | #include <common/standard.h> |
| 27 | #include <common/version.h> |
| 28 | |
| 29 | #include <types/capture.h> |
| 30 | #include <types/global.h> |
| 31 | |
| 32 | #include <proto/acl.h> |
| 33 | #include <proto/action.h> |
| 34 | #include <proto/arg.h> |
| 35 | #include <proto/http_rules.h> |
| 36 | #include <proto/proto_http.h> |
| 37 | #include <proto/sample.h> |
| 38 | |
| 39 | |
| 40 | /* List head of all known action keywords for "http-request" */ |
| 41 | struct action_kw_list http_req_keywords = { |
| 42 | .list = LIST_HEAD_INIT(http_req_keywords.list) |
| 43 | }; |
| 44 | |
| 45 | /* List head of all known action keywords for "http-response" */ |
| 46 | struct action_kw_list http_res_keywords = { |
| 47 | .list = LIST_HEAD_INIT(http_res_keywords.list) |
| 48 | }; |
| 49 | |
| 50 | /* |
| 51 | * Return the struct http_req_action_kw associated to a keyword. |
| 52 | */ |
Thierry Fournier | 20ad136 | 2020-11-28 17:40:24 +0100 | [diff] [blame] | 53 | struct action_kw *action_http_req_custom(const char *kw) |
Willy Tarreau | 61c112a | 2018-10-02 16:43:32 +0200 | [diff] [blame] | 54 | { |
| 55 | return action_lookup(&http_req_keywords.list, kw); |
| 56 | } |
| 57 | |
| 58 | /* |
| 59 | * Return the struct http_res_action_kw associated to a keyword. |
| 60 | */ |
Thierry Fournier | 20ad136 | 2020-11-28 17:40:24 +0100 | [diff] [blame] | 61 | struct action_kw *action_http_res_custom(const char *kw) |
Willy Tarreau | 61c112a | 2018-10-02 16:43:32 +0200 | [diff] [blame] | 62 | { |
| 63 | return action_lookup(&http_res_keywords.list, kw); |
| 64 | } |
| 65 | |
| 66 | /* parse an "http-request" rule */ |
| 67 | struct act_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy) |
| 68 | { |
| 69 | struct act_rule *rule; |
| 70 | struct action_kw *custom = NULL; |
| 71 | int cur_arg; |
| 72 | char *error; |
| 73 | |
| 74 | rule = calloc(1, sizeof(*rule)); |
| 75 | if (!rule) { |
| 76 | ha_alert("parsing [%s:%d]: out of memory.\n", file, linenum); |
| 77 | goto out_err; |
| 78 | } |
| 79 | |
| 80 | if (!strcmp(args[0], "allow")) { |
| 81 | rule->action = ACT_ACTION_ALLOW; |
| 82 | cur_arg = 1; |
| 83 | } else if (!strcmp(args[0], "deny") || !strcmp(args[0], "block") || !strcmp(args[0], "tarpit")) { |
| 84 | int code; |
| 85 | int hc; |
| 86 | |
| 87 | if (!strcmp(args[0], "tarpit")) { |
| 88 | rule->action = ACT_HTTP_REQ_TARPIT; |
| 89 | rule->deny_status = HTTP_ERR_500; |
| 90 | } |
| 91 | else { |
| 92 | rule->action = ACT_ACTION_DENY; |
| 93 | rule->deny_status = HTTP_ERR_403; |
| 94 | } |
| 95 | cur_arg = 1; |
| 96 | if (strcmp(args[cur_arg], "deny_status") == 0) { |
| 97 | cur_arg++; |
| 98 | if (!args[cur_arg]) { |
| 99 | ha_alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : missing status code.\n", |
| 100 | file, linenum, proxy_type_str(proxy), proxy->id, args[0]); |
| 101 | goto out_err; |
| 102 | } |
| 103 | |
| 104 | code = atol(args[cur_arg]); |
| 105 | cur_arg++; |
| 106 | for (hc = 0; hc < HTTP_ERR_SIZE; hc++) { |
| 107 | if (http_err_codes[hc] == code) { |
| 108 | rule->deny_status = hc; |
| 109 | break; |
| 110 | } |
| 111 | } |
| 112 | |
| 113 | if (hc >= HTTP_ERR_SIZE) { |
| 114 | ha_warning("parsing [%s:%d] : status code %d not handled, using default code %d.\n", |
| 115 | file, linenum, code, http_err_codes[rule->deny_status]); |
| 116 | } |
| 117 | } |
| 118 | } else if (!strcmp(args[0], "auth")) { |
| 119 | rule->action = ACT_HTTP_REQ_AUTH; |
| 120 | cur_arg = 1; |
| 121 | |
| 122 | while(*args[cur_arg]) { |
| 123 | if (!strcmp(args[cur_arg], "realm")) { |
| 124 | rule->arg.auth.realm = strdup(args[cur_arg + 1]); |
| 125 | cur_arg+=2; |
| 126 | continue; |
| 127 | } else |
| 128 | break; |
| 129 | } |
| 130 | } else if (!strcmp(args[0], "set-nice")) { |
| 131 | rule->action = ACT_HTTP_SET_NICE; |
| 132 | cur_arg = 1; |
| 133 | |
| 134 | if (!*args[cur_arg] || |
| 135 | (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) { |
| 136 | ha_alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer value).\n", |
| 137 | file, linenum, args[0]); |
| 138 | goto out_err; |
| 139 | } |
| 140 | rule->arg.nice = atoi(args[cur_arg]); |
| 141 | if (rule->arg.nice < -1024) |
| 142 | rule->arg.nice = -1024; |
| 143 | else if (rule->arg.nice > 1024) |
| 144 | rule->arg.nice = 1024; |
| 145 | cur_arg++; |
| 146 | } else if (!strcmp(args[0], "set-tos")) { |
| 147 | #ifdef IP_TOS |
| 148 | char *err; |
| 149 | rule->action = ACT_HTTP_SET_TOS; |
| 150 | cur_arg = 1; |
| 151 | |
| 152 | if (!*args[cur_arg] || |
| 153 | (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) { |
| 154 | ha_alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n", |
| 155 | file, linenum, args[0]); |
| 156 | goto out_err; |
| 157 | } |
| 158 | |
| 159 | rule->arg.tos = strtol(args[cur_arg], &err, 0); |
| 160 | if (err && *err != '\0') { |
| 161 | ha_alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n", |
| 162 | file, linenum, err, args[0]); |
| 163 | goto out_err; |
| 164 | } |
| 165 | cur_arg++; |
| 166 | #else |
| 167 | ha_alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]); |
| 168 | goto out_err; |
| 169 | #endif |
| 170 | } else if (!strcmp(args[0], "set-mark")) { |
| 171 | #ifdef SO_MARK |
| 172 | char *err; |
| 173 | rule->action = ACT_HTTP_SET_MARK; |
| 174 | cur_arg = 1; |
| 175 | |
| 176 | if (!*args[cur_arg] || |
| 177 | (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) { |
| 178 | ha_alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n", |
| 179 | file, linenum, args[0]); |
| 180 | goto out_err; |
| 181 | } |
| 182 | |
| 183 | rule->arg.mark = strtoul(args[cur_arg], &err, 0); |
| 184 | if (err && *err != '\0') { |
| 185 | ha_alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n", |
| 186 | file, linenum, err, args[0]); |
| 187 | goto out_err; |
| 188 | } |
| 189 | cur_arg++; |
| 190 | global.last_checks |= LSTCHK_NETADM; |
| 191 | #else |
| 192 | ha_alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]); |
| 193 | goto out_err; |
| 194 | #endif |
| 195 | } else if (!strcmp(args[0], "set-log-level")) { |
| 196 | rule->action = ACT_HTTP_SET_LOGL; |
| 197 | cur_arg = 1; |
| 198 | |
| 199 | if (!*args[cur_arg] || |
| 200 | (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) { |
| 201 | bad_log_level: |
| 202 | ha_alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (log level name or 'silent').\n", |
| 203 | file, linenum, args[0]); |
| 204 | goto out_err; |
| 205 | } |
| 206 | if (strcmp(args[cur_arg], "silent") == 0) |
| 207 | rule->arg.loglevel = -1; |
| 208 | else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0) |
| 209 | goto bad_log_level; |
| 210 | cur_arg++; |
Frédéric Lécaille | a985e38 | 2018-11-06 10:55:34 +0100 | [diff] [blame] | 211 | } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0 || |
| 212 | strcmp(args[0], "early-hint") == 0) { |
Frédéric Lécaille | 0ebbcb6 | 2018-11-06 14:30:19 +0100 | [diff] [blame] | 213 | char **hdr_name; |
| 214 | int *hdr_name_len; |
| 215 | struct list *fmt; |
| 216 | |
Frédéric Lécaille | a985e38 | 2018-11-06 10:55:34 +0100 | [diff] [blame] | 217 | rule->action = *args[0] == 'a' ? ACT_HTTP_ADD_HDR : |
| 218 | *args[0] == 's' ? ACT_HTTP_SET_HDR : ACT_HTTP_EARLY_HINT; |
Frédéric Lécaille | 0ebbcb6 | 2018-11-06 14:30:19 +0100 | [diff] [blame] | 219 | |
| 220 | hdr_name = *args[0] == 'e' ? &rule->arg.early_hint.name : &rule->arg.hdr_add.name; |
| 221 | hdr_name_len = *args[0] == 'e' ? &rule->arg.early_hint.name_len : &rule->arg.hdr_add.name_len; |
| 222 | fmt = *args[0] == 'e' ? &rule->arg.early_hint.fmt : &rule->arg.hdr_add.fmt; |
| 223 | |
Willy Tarreau | 61c112a | 2018-10-02 16:43:32 +0200 | [diff] [blame] | 224 | cur_arg = 1; |
| 225 | |
| 226 | if (!*args[cur_arg] || !*args[cur_arg+1] || |
| 227 | (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) { |
| 228 | ha_alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n", |
| 229 | file, linenum, args[0]); |
| 230 | goto out_err; |
| 231 | } |
| 232 | |
Frédéric Lécaille | 0ebbcb6 | 2018-11-06 14:30:19 +0100 | [diff] [blame] | 233 | *hdr_name = strdup(args[cur_arg]); |
| 234 | *hdr_name_len = strlen(*hdr_name); |
| 235 | LIST_INIT(fmt); |
Willy Tarreau | 61c112a | 2018-10-02 16:43:32 +0200 | [diff] [blame] | 236 | |
| 237 | proxy->conf.args.ctx = ARGC_HRQ; |
| 238 | error = NULL; |
Frédéric Lécaille | 0ebbcb6 | 2018-11-06 14:30:19 +0100 | [diff] [blame] | 239 | if (!parse_logformat_string(args[cur_arg + 1], proxy, fmt, LOG_OPT_HTTP, |
Willy Tarreau | 61c112a | 2018-10-02 16:43:32 +0200 | [diff] [blame] | 240 | (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &error)) { |
| 241 | ha_alert("parsing [%s:%d]: 'http-request %s': %s.\n", |
| 242 | file, linenum, args[0], error); |
| 243 | free(error); |
| 244 | goto out_err; |
| 245 | } |
| 246 | free(proxy->conf.lfs_file); |
| 247 | proxy->conf.lfs_file = strdup(proxy->conf.args.file); |
| 248 | proxy->conf.lfs_line = proxy->conf.args.line; |
| 249 | cur_arg += 2; |
| 250 | } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) { |
| 251 | rule->action = args[0][8] == 'h' ? ACT_HTTP_REPLACE_HDR : ACT_HTTP_REPLACE_VAL; |
| 252 | cur_arg = 1; |
| 253 | |
| 254 | if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] || |
| 255 | (*args[cur_arg+3] && strcmp(args[cur_arg+3], "if") != 0 && strcmp(args[cur_arg+3], "unless") != 0)) { |
| 256 | ha_alert("parsing [%s:%d]: 'http-request %s' expects exactly 3 arguments.\n", |
| 257 | file, linenum, args[0]); |
| 258 | goto out_err; |
| 259 | } |
| 260 | |
| 261 | rule->arg.hdr_add.name = strdup(args[cur_arg]); |
| 262 | rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name); |
| 263 | LIST_INIT(&rule->arg.hdr_add.fmt); |
| 264 | |
| 265 | error = NULL; |
Dragan Dosen | 2674303 | 2019-04-30 15:54:36 +0200 | [diff] [blame] | 266 | if (!(rule->arg.hdr_add.re = regex_comp(args[cur_arg + 1], 1, 1, &error))) { |
Willy Tarreau | 61c112a | 2018-10-02 16:43:32 +0200 | [diff] [blame] | 267 | ha_alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum, |
| 268 | args[cur_arg + 1], error); |
| 269 | free(error); |
| 270 | goto out_err; |
| 271 | } |
| 272 | |
| 273 | proxy->conf.args.ctx = ARGC_HRQ; |
| 274 | error = NULL; |
| 275 | if (!parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP, |
| 276 | (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &error)) { |
| 277 | ha_alert("parsing [%s:%d]: 'http-request %s': %s.\n", |
| 278 | file, linenum, args[0], error); |
| 279 | free(error); |
| 280 | goto out_err; |
| 281 | } |
| 282 | |
| 283 | free(proxy->conf.lfs_file); |
| 284 | proxy->conf.lfs_file = strdup(proxy->conf.args.file); |
| 285 | proxy->conf.lfs_line = proxy->conf.args.line; |
| 286 | cur_arg += 3; |
| 287 | } else if (strcmp(args[0], "del-header") == 0) { |
| 288 | rule->action = ACT_HTTP_DEL_HDR; |
| 289 | cur_arg = 1; |
| 290 | |
| 291 | if (!*args[cur_arg] || |
| 292 | (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) { |
| 293 | ha_alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n", |
| 294 | file, linenum, args[0]); |
| 295 | goto out_err; |
| 296 | } |
| 297 | |
| 298 | rule->arg.hdr_add.name = strdup(args[cur_arg]); |
| 299 | rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name); |
| 300 | |
| 301 | proxy->conf.args.ctx = ARGC_HRQ; |
| 302 | free(proxy->conf.lfs_file); |
| 303 | proxy->conf.lfs_file = strdup(proxy->conf.args.file); |
| 304 | proxy->conf.lfs_line = proxy->conf.args.line; |
| 305 | cur_arg += 1; |
| 306 | } else if (strncmp(args[0], "track-sc", 8) == 0) { |
| 307 | struct sample_expr *expr; |
| 308 | unsigned int where; |
| 309 | char *err = NULL; |
| 310 | unsigned int tsc_num; |
| 311 | const char *tsc_num_str; |
| 312 | |
| 313 | cur_arg = 1; |
| 314 | proxy->conf.args.ctx = ARGC_TRK; |
| 315 | |
| 316 | tsc_num_str = &args[0][8]; |
| 317 | if (cfg_parse_track_sc_num(&tsc_num, tsc_num_str, tsc_num_str + strlen(tsc_num_str), &err) == -1) { |
| 318 | ha_alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n", |
| 319 | file, linenum, proxy_type_str(proxy), proxy->id, args[0], err); |
| 320 | free(err); |
| 321 | goto out_err; |
| 322 | } |
| 323 | |
| 324 | expr = sample_parse_expr((char **)args, &cur_arg, file, linenum, &err, &proxy->conf.args); |
| 325 | if (!expr) { |
| 326 | ha_alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n", |
| 327 | file, linenum, proxy_type_str(proxy), proxy->id, args[0], err); |
| 328 | free(err); |
| 329 | goto out_err; |
| 330 | } |
| 331 | |
| 332 | where = 0; |
| 333 | if (proxy->cap & PR_CAP_FE) |
| 334 | where |= SMP_VAL_FE_HRQ_HDR; |
| 335 | if (proxy->cap & PR_CAP_BE) |
| 336 | where |= SMP_VAL_BE_HRQ_HDR; |
| 337 | |
| 338 | if (!(expr->fetch->val & where)) { |
| 339 | ha_alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule :" |
| 340 | " fetch method '%s' extracts information from '%s', none of which is available here.\n", |
| 341 | file, linenum, proxy_type_str(proxy), proxy->id, args[0], |
| 342 | args[cur_arg-1], sample_src_names(expr->fetch->use)); |
| 343 | free(expr); |
| 344 | goto out_err; |
| 345 | } |
| 346 | |
| 347 | if (strcmp(args[cur_arg], "table") == 0) { |
| 348 | cur_arg++; |
| 349 | if (!args[cur_arg]) { |
| 350 | ha_alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : missing table name.\n", |
| 351 | file, linenum, proxy_type_str(proxy), proxy->id, args[0]); |
| 352 | free(expr); |
| 353 | goto out_err; |
| 354 | } |
| 355 | /* we copy the table name for now, it will be resolved later */ |
| 356 | rule->arg.trk_ctr.table.n = strdup(args[cur_arg]); |
| 357 | cur_arg++; |
| 358 | } |
| 359 | rule->arg.trk_ctr.expr = expr; |
| 360 | rule->action = ACT_ACTION_TRK_SC0 + tsc_num; |
| 361 | rule->check_ptr = check_trk_action; |
| 362 | } else if (strcmp(args[0], "redirect") == 0) { |
| 363 | struct redirect_rule *redir; |
| 364 | char *errmsg = NULL; |
| 365 | |
| 366 | if ((redir = http_parse_redirect_rule(file, linenum, proxy, (const char **)args + 1, &errmsg, 1, 0)) == NULL) { |
| 367 | ha_alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n", |
| 368 | file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg); |
| 369 | goto out_err; |
| 370 | } |
| 371 | |
| 372 | /* this redirect rule might already contain a parsed condition which |
| 373 | * we'll pass to the http-request rule. |
| 374 | */ |
| 375 | rule->action = ACT_HTTP_REDIR; |
| 376 | rule->arg.redir = redir; |
| 377 | rule->cond = redir->cond; |
| 378 | redir->cond = NULL; |
| 379 | cur_arg = 2; |
| 380 | return rule; |
| 381 | } else if (strncmp(args[0], "add-acl", 7) == 0) { |
| 382 | /* http-request add-acl(<reference (acl name)>) <key pattern> */ |
| 383 | rule->action = ACT_HTTP_ADD_ACL; |
| 384 | /* |
| 385 | * '+ 8' for 'add-acl(' |
| 386 | * '- 9' for 'add-acl(' + trailing ')' |
| 387 | */ |
| 388 | rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9); |
| 389 | |
| 390 | cur_arg = 1; |
| 391 | |
| 392 | if (!*args[cur_arg] || |
| 393 | (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) { |
| 394 | ha_alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n", |
| 395 | file, linenum, args[0]); |
| 396 | goto out_err; |
| 397 | } |
| 398 | |
| 399 | LIST_INIT(&rule->arg.map.key); |
| 400 | proxy->conf.args.ctx = ARGC_HRQ; |
| 401 | error = NULL; |
| 402 | if (!parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP, |
| 403 | (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &error)) { |
| 404 | ha_alert("parsing [%s:%d]: 'http-request %s': %s.\n", |
| 405 | file, linenum, args[0], error); |
| 406 | free(error); |
| 407 | goto out_err; |
| 408 | } |
| 409 | free(proxy->conf.lfs_file); |
| 410 | proxy->conf.lfs_file = strdup(proxy->conf.args.file); |
| 411 | proxy->conf.lfs_line = proxy->conf.args.line; |
| 412 | cur_arg += 1; |
| 413 | } else if (strncmp(args[0], "del-acl", 7) == 0) { |
| 414 | /* http-request del-acl(<reference (acl name)>) <key pattern> */ |
| 415 | rule->action = ACT_HTTP_DEL_ACL; |
| 416 | /* |
| 417 | * '+ 8' for 'del-acl(' |
| 418 | * '- 9' for 'del-acl(' + trailing ')' |
| 419 | */ |
| 420 | rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9); |
| 421 | |
| 422 | cur_arg = 1; |
| 423 | |
| 424 | if (!*args[cur_arg] || |
| 425 | (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) { |
| 426 | ha_alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n", |
| 427 | file, linenum, args[0]); |
| 428 | goto out_err; |
| 429 | } |
| 430 | |
| 431 | LIST_INIT(&rule->arg.map.key); |
| 432 | proxy->conf.args.ctx = ARGC_HRQ; |
| 433 | error = NULL; |
| 434 | if (!parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP, |
| 435 | (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &error)) { |
| 436 | ha_alert("parsing [%s:%d]: 'http-request %s': %s.\n", |
| 437 | file, linenum, args[0], error); |
| 438 | free(error); |
| 439 | goto out_err; |
| 440 | } |
| 441 | free(proxy->conf.lfs_file); |
| 442 | proxy->conf.lfs_file = strdup(proxy->conf.args.file); |
| 443 | proxy->conf.lfs_line = proxy->conf.args.line; |
| 444 | cur_arg += 1; |
| 445 | } else if (strncmp(args[0], "del-map", 7) == 0) { |
| 446 | /* http-request del-map(<reference (map name)>) <key pattern> */ |
| 447 | rule->action = ACT_HTTP_DEL_MAP; |
| 448 | /* |
| 449 | * '+ 8' for 'del-map(' |
| 450 | * '- 9' for 'del-map(' + trailing ')' |
| 451 | */ |
| 452 | rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9); |
| 453 | |
| 454 | cur_arg = 1; |
| 455 | |
| 456 | if (!*args[cur_arg] || |
| 457 | (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) { |
| 458 | ha_alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n", |
| 459 | file, linenum, args[0]); |
| 460 | goto out_err; |
| 461 | } |
| 462 | |
| 463 | LIST_INIT(&rule->arg.map.key); |
| 464 | proxy->conf.args.ctx = ARGC_HRQ; |
| 465 | error = NULL; |
| 466 | if (!parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP, |
| 467 | (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &error)) { |
| 468 | ha_alert("parsing [%s:%d]: 'http-request %s': %s.\n", |
| 469 | file, linenum, args[0], error); |
| 470 | free(error); |
| 471 | goto out_err; |
| 472 | } |
| 473 | free(proxy->conf.lfs_file); |
| 474 | proxy->conf.lfs_file = strdup(proxy->conf.args.file); |
| 475 | proxy->conf.lfs_line = proxy->conf.args.line; |
| 476 | cur_arg += 1; |
| 477 | } else if (strncmp(args[0], "set-map", 7) == 0) { |
| 478 | /* http-request set-map(<reference (map name)>) <key pattern> <value pattern> */ |
| 479 | rule->action = ACT_HTTP_SET_MAP; |
| 480 | /* |
| 481 | * '+ 8' for 'set-map(' |
| 482 | * '- 9' for 'set-map(' + trailing ')' |
| 483 | */ |
| 484 | rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9); |
| 485 | |
| 486 | cur_arg = 1; |
| 487 | |
| 488 | if (!*args[cur_arg] || !*args[cur_arg+1] || |
| 489 | (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) { |
| 490 | ha_alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n", |
| 491 | file, linenum, args[0]); |
| 492 | goto out_err; |
| 493 | } |
| 494 | |
| 495 | LIST_INIT(&rule->arg.map.key); |
| 496 | LIST_INIT(&rule->arg.map.value); |
| 497 | proxy->conf.args.ctx = ARGC_HRQ; |
| 498 | |
| 499 | /* key pattern */ |
| 500 | error = NULL; |
| 501 | if (!parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP, |
| 502 | (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &error)) { |
| 503 | ha_alert("parsing [%s:%d]: 'http-request %s' key: %s.\n", |
| 504 | file, linenum, args[0], error); |
| 505 | free(error); |
| 506 | goto out_err; |
| 507 | } |
| 508 | |
| 509 | /* value pattern */ |
| 510 | error = NULL; |
| 511 | if (!parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP, |
| 512 | (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &error)) { |
| 513 | ha_alert("parsing [%s:%d]: 'http-request %s' pattern: %s.\n", |
| 514 | file, linenum, args[0], error); |
| 515 | free(error); |
| 516 | goto out_err; |
| 517 | } |
| 518 | free(proxy->conf.lfs_file); |
| 519 | proxy->conf.lfs_file = strdup(proxy->conf.args.file); |
| 520 | proxy->conf.lfs_line = proxy->conf.args.line; |
| 521 | |
| 522 | cur_arg += 2; |
| 523 | } else if (((custom = action_http_req_custom(args[0])) != NULL)) { |
| 524 | char *errmsg = NULL; |
| 525 | cur_arg = 1; |
| 526 | /* try in the module list */ |
| 527 | rule->from = ACT_F_HTTP_REQ; |
| 528 | rule->kw = custom; |
| 529 | if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) == ACT_RET_PRS_ERR) { |
| 530 | ha_alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n", |
| 531 | file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg); |
| 532 | free(errmsg); |
| 533 | goto out_err; |
| 534 | } |
| 535 | } else { |
| 536 | action_build_list(&http_req_keywords.list, &trash); |
| 537 | ha_alert("parsing [%s:%d]: 'http-request' expects 'allow', 'deny', 'auth', 'redirect', " |
| 538 | "'tarpit', 'add-header', 'set-header', 'replace-header', 'replace-value', 'set-nice', " |
| 539 | "'set-tos', 'set-mark', 'set-log-level', 'add-acl', 'del-acl', 'del-map', 'set-map', 'track-sc*'" |
| 540 | "%s%s, but got '%s'%s.\n", |
| 541 | file, linenum, *trash.area ? ", " : "", trash.area, |
| 542 | args[0], *args[0] ? "" : " (missing argument)"); |
| 543 | goto out_err; |
| 544 | } |
| 545 | |
| 546 | if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) { |
| 547 | struct acl_cond *cond; |
| 548 | char *errmsg = NULL; |
| 549 | |
| 550 | if ((cond = build_acl_cond(file, linenum, &proxy->acl, proxy, args+cur_arg, &errmsg)) == NULL) { |
| 551 | ha_alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n", |
| 552 | file, linenum, args[0], errmsg); |
| 553 | free(errmsg); |
| 554 | goto out_err; |
| 555 | } |
| 556 | rule->cond = cond; |
| 557 | } |
| 558 | else if (*args[cur_arg]) { |
Willy Tarreau | 5abdc76 | 2019-06-11 16:01:56 +0200 | [diff] [blame] | 559 | ha_alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth'," |
| 560 | " 'deny_status' for 'deny', or" |
Willy Tarreau | 61c112a | 2018-10-02 16:43:32 +0200 | [diff] [blame] | 561 | " either 'if' or 'unless' followed by a condition but found '%s'.\n", |
| 562 | file, linenum, args[0], args[cur_arg]); |
| 563 | goto out_err; |
| 564 | } |
| 565 | |
| 566 | return rule; |
| 567 | out_err: |
| 568 | free(rule); |
| 569 | return NULL; |
| 570 | } |
| 571 | |
| 572 | /* parse an "http-respose" rule */ |
| 573 | struct act_rule *parse_http_res_cond(const char **args, const char *file, int linenum, struct proxy *proxy) |
| 574 | { |
| 575 | struct act_rule *rule; |
| 576 | struct action_kw *custom = NULL; |
| 577 | int cur_arg; |
| 578 | char *error; |
| 579 | |
| 580 | rule = calloc(1, sizeof(*rule)); |
| 581 | if (!rule) { |
| 582 | ha_alert("parsing [%s:%d]: out of memory.\n", file, linenum); |
| 583 | goto out_err; |
| 584 | } |
| 585 | |
| 586 | if (!strcmp(args[0], "allow")) { |
| 587 | rule->action = ACT_ACTION_ALLOW; |
| 588 | cur_arg = 1; |
| 589 | } else if (!strcmp(args[0], "deny")) { |
| 590 | rule->action = ACT_ACTION_DENY; |
| 591 | cur_arg = 1; |
| 592 | } else if (!strcmp(args[0], "set-nice")) { |
| 593 | rule->action = ACT_HTTP_SET_NICE; |
| 594 | cur_arg = 1; |
| 595 | |
| 596 | if (!*args[cur_arg] || |
| 597 | (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) { |
| 598 | ha_alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer value).\n", |
| 599 | file, linenum, args[0]); |
| 600 | goto out_err; |
| 601 | } |
| 602 | rule->arg.nice = atoi(args[cur_arg]); |
| 603 | if (rule->arg.nice < -1024) |
| 604 | rule->arg.nice = -1024; |
| 605 | else if (rule->arg.nice > 1024) |
| 606 | rule->arg.nice = 1024; |
| 607 | cur_arg++; |
| 608 | } else if (!strcmp(args[0], "set-tos")) { |
| 609 | #ifdef IP_TOS |
| 610 | char *err; |
| 611 | rule->action = ACT_HTTP_SET_TOS; |
| 612 | cur_arg = 1; |
| 613 | |
| 614 | if (!*args[cur_arg] || |
| 615 | (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) { |
| 616 | ha_alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n", |
| 617 | file, linenum, args[0]); |
| 618 | goto out_err; |
| 619 | } |
| 620 | |
| 621 | rule->arg.tos = strtol(args[cur_arg], &err, 0); |
| 622 | if (err && *err != '\0') { |
| 623 | ha_alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n", |
| 624 | file, linenum, err, args[0]); |
| 625 | goto out_err; |
| 626 | } |
| 627 | cur_arg++; |
| 628 | #else |
| 629 | ha_alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]); |
| 630 | goto out_err; |
| 631 | #endif |
| 632 | } else if (!strcmp(args[0], "set-mark")) { |
| 633 | #ifdef SO_MARK |
| 634 | char *err; |
| 635 | rule->action = ACT_HTTP_SET_MARK; |
| 636 | cur_arg = 1; |
| 637 | |
| 638 | if (!*args[cur_arg] || |
| 639 | (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) { |
| 640 | ha_alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n", |
| 641 | file, linenum, args[0]); |
| 642 | goto out_err; |
| 643 | } |
| 644 | |
| 645 | rule->arg.mark = strtoul(args[cur_arg], &err, 0); |
| 646 | if (err && *err != '\0') { |
| 647 | ha_alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n", |
| 648 | file, linenum, err, args[0]); |
| 649 | goto out_err; |
| 650 | } |
| 651 | cur_arg++; |
| 652 | global.last_checks |= LSTCHK_NETADM; |
| 653 | #else |
| 654 | ha_alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]); |
| 655 | goto out_err; |
| 656 | #endif |
| 657 | } else if (!strcmp(args[0], "set-log-level")) { |
| 658 | rule->action = ACT_HTTP_SET_LOGL; |
| 659 | cur_arg = 1; |
| 660 | |
| 661 | if (!*args[cur_arg] || |
| 662 | (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) { |
| 663 | bad_log_level: |
| 664 | ha_alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (log level name or 'silent').\n", |
| 665 | file, linenum, args[0]); |
| 666 | goto out_err; |
| 667 | } |
| 668 | if (strcmp(args[cur_arg], "silent") == 0) |
| 669 | rule->arg.loglevel = -1; |
| 670 | else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0) |
| 671 | goto bad_log_level; |
| 672 | cur_arg++; |
| 673 | } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) { |
| 674 | rule->action = *args[0] == 'a' ? ACT_HTTP_ADD_HDR : ACT_HTTP_SET_HDR; |
| 675 | cur_arg = 1; |
| 676 | |
| 677 | if (!*args[cur_arg] || !*args[cur_arg+1] || |
| 678 | (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) { |
| 679 | ha_alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n", |
| 680 | file, linenum, args[0]); |
| 681 | goto out_err; |
| 682 | } |
| 683 | |
| 684 | rule->arg.hdr_add.name = strdup(args[cur_arg]); |
| 685 | rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name); |
| 686 | LIST_INIT(&rule->arg.hdr_add.fmt); |
| 687 | |
| 688 | proxy->conf.args.ctx = ARGC_HRS; |
| 689 | error = NULL; |
| 690 | if (!parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP, |
| 691 | (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR, &error)) { |
| 692 | ha_alert("parsing [%s:%d]: 'http-response %s': %s.\n", |
| 693 | file, linenum, args[0], error); |
| 694 | free(error); |
| 695 | goto out_err; |
| 696 | } |
| 697 | free(proxy->conf.lfs_file); |
| 698 | proxy->conf.lfs_file = strdup(proxy->conf.args.file); |
| 699 | proxy->conf.lfs_line = proxy->conf.args.line; |
| 700 | cur_arg += 2; |
| 701 | } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) { |
| 702 | rule->action = args[0][8] == 'h' ? ACT_HTTP_REPLACE_HDR : ACT_HTTP_REPLACE_VAL; |
| 703 | cur_arg = 1; |
| 704 | |
| 705 | if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] || |
| 706 | (*args[cur_arg+3] && strcmp(args[cur_arg+3], "if") != 0 && strcmp(args[cur_arg+3], "unless") != 0)) { |
| 707 | ha_alert("parsing [%s:%d]: 'http-response %s' expects exactly 3 arguments.\n", |
| 708 | file, linenum, args[0]); |
| 709 | goto out_err; |
| 710 | } |
| 711 | |
| 712 | rule->arg.hdr_add.name = strdup(args[cur_arg]); |
| 713 | rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name); |
| 714 | LIST_INIT(&rule->arg.hdr_add.fmt); |
| 715 | |
| 716 | error = NULL; |
Dragan Dosen | 2674303 | 2019-04-30 15:54:36 +0200 | [diff] [blame] | 717 | if (!(rule->arg.hdr_add.re = regex_comp(args[cur_arg + 1], 1, 1, &error))) { |
Willy Tarreau | 61c112a | 2018-10-02 16:43:32 +0200 | [diff] [blame] | 718 | ha_alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum, |
| 719 | args[cur_arg + 1], error); |
| 720 | free(error); |
| 721 | goto out_err; |
| 722 | } |
| 723 | |
| 724 | proxy->conf.args.ctx = ARGC_HRQ; |
| 725 | error = NULL; |
| 726 | if (!parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP, |
| 727 | (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR, &error)) { |
| 728 | ha_alert("parsing [%s:%d]: 'http-response %s': %s.\n", |
| 729 | file, linenum, args[0], error); |
| 730 | free(error); |
| 731 | goto out_err; |
| 732 | } |
| 733 | |
| 734 | free(proxy->conf.lfs_file); |
| 735 | proxy->conf.lfs_file = strdup(proxy->conf.args.file); |
| 736 | proxy->conf.lfs_line = proxy->conf.args.line; |
| 737 | cur_arg += 3; |
| 738 | } else if (strcmp(args[0], "del-header") == 0) { |
| 739 | rule->action = ACT_HTTP_DEL_HDR; |
| 740 | cur_arg = 1; |
| 741 | |
| 742 | if (!*args[cur_arg] || |
| 743 | (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) { |
| 744 | ha_alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n", |
| 745 | file, linenum, args[0]); |
| 746 | goto out_err; |
| 747 | } |
| 748 | |
| 749 | rule->arg.hdr_add.name = strdup(args[cur_arg]); |
| 750 | rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name); |
| 751 | |
| 752 | proxy->conf.args.ctx = ARGC_HRS; |
| 753 | free(proxy->conf.lfs_file); |
| 754 | proxy->conf.lfs_file = strdup(proxy->conf.args.file); |
| 755 | proxy->conf.lfs_line = proxy->conf.args.line; |
| 756 | cur_arg += 1; |
| 757 | } else if (strncmp(args[0], "add-acl", 7) == 0) { |
| 758 | /* http-request add-acl(<reference (acl name)>) <key pattern> */ |
| 759 | rule->action = ACT_HTTP_ADD_ACL; |
| 760 | /* |
| 761 | * '+ 8' for 'add-acl(' |
| 762 | * '- 9' for 'add-acl(' + trailing ')' |
| 763 | */ |
| 764 | rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9); |
| 765 | |
| 766 | cur_arg = 1; |
| 767 | |
| 768 | if (!*args[cur_arg] || |
| 769 | (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) { |
| 770 | ha_alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n", |
| 771 | file, linenum, args[0]); |
| 772 | goto out_err; |
| 773 | } |
| 774 | |
| 775 | LIST_INIT(&rule->arg.map.key); |
| 776 | proxy->conf.args.ctx = ARGC_HRS; |
| 777 | error = NULL; |
| 778 | if (!parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP, |
| 779 | (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR, &error)) { |
| 780 | ha_alert("parsing [%s:%d]: 'http-response %s': %s.\n", |
| 781 | file, linenum, args[0], error); |
| 782 | free(error); |
| 783 | goto out_err; |
| 784 | } |
| 785 | free(proxy->conf.lfs_file); |
| 786 | proxy->conf.lfs_file = strdup(proxy->conf.args.file); |
| 787 | proxy->conf.lfs_line = proxy->conf.args.line; |
| 788 | |
| 789 | cur_arg += 1; |
| 790 | } else if (strncmp(args[0], "del-acl", 7) == 0) { |
| 791 | /* http-response del-acl(<reference (acl name)>) <key pattern> */ |
| 792 | rule->action = ACT_HTTP_DEL_ACL; |
| 793 | /* |
| 794 | * '+ 8' for 'del-acl(' |
| 795 | * '- 9' for 'del-acl(' + trailing ')' |
| 796 | */ |
| 797 | rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9); |
| 798 | |
| 799 | cur_arg = 1; |
| 800 | |
| 801 | if (!*args[cur_arg] || |
| 802 | (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) { |
| 803 | ha_alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n", |
| 804 | file, linenum, args[0]); |
| 805 | goto out_err; |
| 806 | } |
| 807 | |
| 808 | LIST_INIT(&rule->arg.map.key); |
| 809 | proxy->conf.args.ctx = ARGC_HRS; |
| 810 | error = NULL; |
| 811 | if (!parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP, |
| 812 | (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR, &error)) { |
| 813 | ha_alert("parsing [%s:%d]: 'http-response %s': %s.\n", |
| 814 | file, linenum, args[0], error); |
| 815 | free(error); |
| 816 | goto out_err; |
| 817 | } |
| 818 | free(proxy->conf.lfs_file); |
| 819 | proxy->conf.lfs_file = strdup(proxy->conf.args.file); |
| 820 | proxy->conf.lfs_line = proxy->conf.args.line; |
| 821 | cur_arg += 1; |
| 822 | } else if (strncmp(args[0], "del-map", 7) == 0) { |
| 823 | /* http-response del-map(<reference (map name)>) <key pattern> */ |
| 824 | rule->action = ACT_HTTP_DEL_MAP; |
| 825 | /* |
| 826 | * '+ 8' for 'del-map(' |
| 827 | * '- 9' for 'del-map(' + trailing ')' |
| 828 | */ |
| 829 | rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9); |
| 830 | |
| 831 | cur_arg = 1; |
| 832 | |
| 833 | if (!*args[cur_arg] || |
| 834 | (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) { |
| 835 | ha_alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n", |
| 836 | file, linenum, args[0]); |
| 837 | goto out_err; |
| 838 | } |
| 839 | |
| 840 | LIST_INIT(&rule->arg.map.key); |
| 841 | proxy->conf.args.ctx = ARGC_HRS; |
| 842 | error = NULL; |
| 843 | if (!parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP, |
| 844 | (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR, &error)) { |
| 845 | ha_alert("parsing [%s:%d]: 'http-response %s' %s.\n", |
| 846 | file, linenum, args[0], error); |
| 847 | free(error); |
| 848 | goto out_err; |
| 849 | } |
| 850 | free(proxy->conf.lfs_file); |
| 851 | proxy->conf.lfs_file = strdup(proxy->conf.args.file); |
| 852 | proxy->conf.lfs_line = proxy->conf.args.line; |
| 853 | cur_arg += 1; |
| 854 | } else if (strncmp(args[0], "set-map", 7) == 0) { |
| 855 | /* http-response set-map(<reference (map name)>) <key pattern> <value pattern> */ |
| 856 | rule->action = ACT_HTTP_SET_MAP; |
| 857 | /* |
| 858 | * '+ 8' for 'set-map(' |
| 859 | * '- 9' for 'set-map(' + trailing ')' |
| 860 | */ |
| 861 | rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9); |
| 862 | |
| 863 | cur_arg = 1; |
| 864 | |
| 865 | if (!*args[cur_arg] || !*args[cur_arg+1] || |
| 866 | (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) { |
| 867 | ha_alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n", |
| 868 | file, linenum, args[0]); |
| 869 | goto out_err; |
| 870 | } |
| 871 | |
| 872 | LIST_INIT(&rule->arg.map.key); |
| 873 | LIST_INIT(&rule->arg.map.value); |
| 874 | |
| 875 | proxy->conf.args.ctx = ARGC_HRS; |
| 876 | |
| 877 | /* key pattern */ |
| 878 | error = NULL; |
| 879 | if (!parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP, |
| 880 | (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR, &error)) { |
| 881 | ha_alert("parsing [%s:%d]: 'http-response %s' name: %s.\n", |
| 882 | file, linenum, args[0], error); |
| 883 | free(error); |
| 884 | goto out_err; |
| 885 | } |
| 886 | |
| 887 | /* value pattern */ |
| 888 | error = NULL; |
| 889 | if (!parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP, |
| 890 | (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR, &error)) { |
| 891 | ha_alert("parsing [%s:%d]: 'http-response %s' value: %s.\n", |
| 892 | file, linenum, args[0], error); |
| 893 | free(error); |
| 894 | goto out_err; |
| 895 | } |
| 896 | |
| 897 | free(proxy->conf.lfs_file); |
| 898 | proxy->conf.lfs_file = strdup(proxy->conf.args.file); |
| 899 | proxy->conf.lfs_line = proxy->conf.args.line; |
| 900 | |
| 901 | cur_arg += 2; |
| 902 | } else if (strcmp(args[0], "redirect") == 0) { |
| 903 | struct redirect_rule *redir; |
| 904 | char *errmsg = NULL; |
| 905 | |
| 906 | if ((redir = http_parse_redirect_rule(file, linenum, proxy, (const char **)args + 1, &errmsg, 1, 1)) == NULL) { |
| 907 | ha_alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n", |
| 908 | file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg); |
| 909 | goto out_err; |
| 910 | } |
| 911 | |
| 912 | /* this redirect rule might already contain a parsed condition which |
| 913 | * we'll pass to the http-request rule. |
| 914 | */ |
| 915 | rule->action = ACT_HTTP_REDIR; |
| 916 | rule->arg.redir = redir; |
| 917 | rule->cond = redir->cond; |
| 918 | redir->cond = NULL; |
| 919 | cur_arg = 2; |
| 920 | return rule; |
| 921 | } else if (strncmp(args[0], "track-sc", 8) == 0) { |
| 922 | struct sample_expr *expr; |
| 923 | unsigned int where; |
| 924 | char *err = NULL; |
| 925 | unsigned int tsc_num; |
| 926 | const char *tsc_num_str; |
| 927 | |
| 928 | cur_arg = 1; |
| 929 | proxy->conf.args.ctx = ARGC_TRK; |
| 930 | |
| 931 | tsc_num_str = &args[0][8]; |
| 932 | if (cfg_parse_track_sc_num(&tsc_num, tsc_num_str, tsc_num_str + strlen(tsc_num_str), &err) == -1) { |
| 933 | ha_alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n", |
| 934 | file, linenum, proxy_type_str(proxy), proxy->id, args[0], err); |
| 935 | free(err); |
| 936 | goto out_err; |
| 937 | } |
| 938 | |
| 939 | expr = sample_parse_expr((char **)args, &cur_arg, file, linenum, &err, &proxy->conf.args); |
| 940 | if (!expr) { |
| 941 | ha_alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n", |
| 942 | file, linenum, proxy_type_str(proxy), proxy->id, args[0], err); |
| 943 | free(err); |
| 944 | goto out_err; |
| 945 | } |
| 946 | |
| 947 | where = 0; |
| 948 | if (proxy->cap & PR_CAP_FE) |
| 949 | where |= SMP_VAL_FE_HRS_HDR; |
| 950 | if (proxy->cap & PR_CAP_BE) |
| 951 | where |= SMP_VAL_BE_HRS_HDR; |
| 952 | |
| 953 | if (!(expr->fetch->val & where)) { |
| 954 | ha_alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule :" |
| 955 | " fetch method '%s' extracts information from '%s', none of which is available here.\n", |
| 956 | file, linenum, proxy_type_str(proxy), proxy->id, args[0], |
| 957 | args[cur_arg-1], sample_src_names(expr->fetch->use)); |
| 958 | free(expr); |
| 959 | goto out_err; |
| 960 | } |
| 961 | |
| 962 | if (strcmp(args[cur_arg], "table") == 0) { |
| 963 | cur_arg++; |
| 964 | if (!args[cur_arg]) { |
| 965 | ha_alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : missing table name.\n", |
| 966 | file, linenum, proxy_type_str(proxy), proxy->id, args[0]); |
| 967 | free(expr); |
| 968 | goto out_err; |
| 969 | } |
| 970 | /* we copy the table name for now, it will be resolved later */ |
| 971 | rule->arg.trk_ctr.table.n = strdup(args[cur_arg]); |
| 972 | cur_arg++; |
| 973 | } |
| 974 | rule->arg.trk_ctr.expr = expr; |
| 975 | rule->action = ACT_ACTION_TRK_SC0 + tsc_num; |
| 976 | rule->check_ptr = check_trk_action; |
| 977 | } else if (((custom = action_http_res_custom(args[0])) != NULL)) { |
| 978 | char *errmsg = NULL; |
| 979 | cur_arg = 1; |
| 980 | /* try in the module list */ |
| 981 | rule->from = ACT_F_HTTP_RES; |
| 982 | rule->kw = custom; |
| 983 | if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) == ACT_RET_PRS_ERR) { |
| 984 | ha_alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n", |
| 985 | file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg); |
| 986 | free(errmsg); |
| 987 | goto out_err; |
| 988 | } |
| 989 | } else { |
| 990 | action_build_list(&http_res_keywords.list, &trash); |
| 991 | ha_alert("parsing [%s:%d]: 'http-response' expects 'allow', 'deny', 'redirect', " |
| 992 | "'add-header', 'del-header', 'set-header', 'replace-header', 'replace-value', 'set-nice', " |
| 993 | "'set-tos', 'set-mark', 'set-log-level', 'add-acl', 'del-acl', 'del-map', 'set-map', 'track-sc*'" |
| 994 | "%s%s, but got '%s'%s.\n", |
| 995 | file, linenum, *trash.area ? ", " : "", trash.area, |
| 996 | args[0], *args[0] ? "" : " (missing argument)"); |
| 997 | goto out_err; |
| 998 | } |
| 999 | |
| 1000 | if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) { |
| 1001 | struct acl_cond *cond; |
| 1002 | char *errmsg = NULL; |
| 1003 | |
| 1004 | if ((cond = build_acl_cond(file, linenum, &proxy->acl, proxy, args+cur_arg, &errmsg)) == NULL) { |
| 1005 | ha_alert("parsing [%s:%d] : error detected while parsing an 'http-response %s' condition : %s.\n", |
| 1006 | file, linenum, args[0], errmsg); |
| 1007 | free(errmsg); |
| 1008 | goto out_err; |
| 1009 | } |
| 1010 | rule->cond = cond; |
| 1011 | } |
| 1012 | else if (*args[cur_arg]) { |
| 1013 | ha_alert("parsing [%s:%d]: 'http-response %s' expects" |
| 1014 | " either 'if' or 'unless' followed by a condition but found '%s'.\n", |
| 1015 | file, linenum, args[0], args[cur_arg]); |
| 1016 | goto out_err; |
| 1017 | } |
| 1018 | |
| 1019 | return rule; |
| 1020 | out_err: |
| 1021 | free(rule); |
| 1022 | return NULL; |
| 1023 | } |
| 1024 | |
| 1025 | /* Parses a redirect rule. Returns the redirect rule on success or NULL on error, |
| 1026 | * with <err> filled with the error message. If <use_fmt> is not null, builds a |
| 1027 | * dynamic log-format rule instead of a static string. Parameter <dir> indicates |
| 1028 | * the direction of the rule, and equals 0 for request, non-zero for responses. |
| 1029 | */ |
| 1030 | struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy, |
| 1031 | const char **args, char **errmsg, int use_fmt, int dir) |
| 1032 | { |
| 1033 | struct redirect_rule *rule; |
| 1034 | int cur_arg; |
| 1035 | int type = REDIRECT_TYPE_NONE; |
| 1036 | int code = 302; |
| 1037 | const char *destination = NULL; |
| 1038 | const char *cookie = NULL; |
| 1039 | int cookie_set = 0; |
Christopher Faulet | cba5a88 | 2020-01-28 09:13:41 +0100 | [diff] [blame] | 1040 | unsigned int flags = (!dir ? REDIRECT_FLAG_FROM_REQ : REDIRECT_FLAG_NONE); |
Willy Tarreau | 61c112a | 2018-10-02 16:43:32 +0200 | [diff] [blame] | 1041 | struct acl_cond *cond = NULL; |
| 1042 | |
| 1043 | cur_arg = 0; |
| 1044 | while (*(args[cur_arg])) { |
| 1045 | if (strcmp(args[cur_arg], "location") == 0) { |
| 1046 | if (!*args[cur_arg + 1]) |
| 1047 | goto missing_arg; |
| 1048 | |
| 1049 | type = REDIRECT_TYPE_LOCATION; |
| 1050 | cur_arg++; |
| 1051 | destination = args[cur_arg]; |
| 1052 | } |
| 1053 | else if (strcmp(args[cur_arg], "prefix") == 0) { |
| 1054 | if (!*args[cur_arg + 1]) |
| 1055 | goto missing_arg; |
| 1056 | type = REDIRECT_TYPE_PREFIX; |
| 1057 | cur_arg++; |
| 1058 | destination = args[cur_arg]; |
| 1059 | } |
| 1060 | else if (strcmp(args[cur_arg], "scheme") == 0) { |
| 1061 | if (!*args[cur_arg + 1]) |
| 1062 | goto missing_arg; |
| 1063 | |
| 1064 | type = REDIRECT_TYPE_SCHEME; |
| 1065 | cur_arg++; |
| 1066 | destination = args[cur_arg]; |
| 1067 | } |
| 1068 | else if (strcmp(args[cur_arg], "set-cookie") == 0) { |
| 1069 | if (!*args[cur_arg + 1]) |
| 1070 | goto missing_arg; |
| 1071 | |
| 1072 | cur_arg++; |
| 1073 | cookie = args[cur_arg]; |
| 1074 | cookie_set = 1; |
| 1075 | } |
| 1076 | else if (strcmp(args[cur_arg], "clear-cookie") == 0) { |
| 1077 | if (!*args[cur_arg + 1]) |
| 1078 | goto missing_arg; |
| 1079 | |
| 1080 | cur_arg++; |
| 1081 | cookie = args[cur_arg]; |
| 1082 | cookie_set = 0; |
| 1083 | } |
| 1084 | else if (strcmp(args[cur_arg], "code") == 0) { |
| 1085 | if (!*args[cur_arg + 1]) |
| 1086 | goto missing_arg; |
| 1087 | |
| 1088 | cur_arg++; |
| 1089 | code = atol(args[cur_arg]); |
| 1090 | if (code < 301 || code > 308 || (code > 303 && code < 307)) { |
| 1091 | memprintf(errmsg, |
| 1092 | "'%s': unsupported HTTP code '%s' (must be one of 301, 302, 303, 307 or 308)", |
| 1093 | args[cur_arg - 1], args[cur_arg]); |
| 1094 | return NULL; |
| 1095 | } |
| 1096 | } |
| 1097 | else if (!strcmp(args[cur_arg],"drop-query")) { |
| 1098 | flags |= REDIRECT_FLAG_DROP_QS; |
| 1099 | } |
| 1100 | else if (!strcmp(args[cur_arg],"append-slash")) { |
| 1101 | flags |= REDIRECT_FLAG_APPEND_SLASH; |
| 1102 | } |
| 1103 | else if (strcmp(args[cur_arg], "if") == 0 || |
| 1104 | strcmp(args[cur_arg], "unless") == 0) { |
| 1105 | cond = build_acl_cond(file, linenum, &curproxy->acl, curproxy, (const char **)args + cur_arg, errmsg); |
| 1106 | if (!cond) { |
| 1107 | memprintf(errmsg, "error in condition: %s", *errmsg); |
| 1108 | return NULL; |
| 1109 | } |
| 1110 | break; |
| 1111 | } |
| 1112 | else { |
| 1113 | memprintf(errmsg, |
| 1114 | "expects 'code', 'prefix', 'location', 'scheme', 'set-cookie', 'clear-cookie', 'drop-query' or 'append-slash' (was '%s')", |
| 1115 | args[cur_arg]); |
| 1116 | return NULL; |
| 1117 | } |
| 1118 | cur_arg++; |
| 1119 | } |
| 1120 | |
| 1121 | if (type == REDIRECT_TYPE_NONE) { |
| 1122 | memprintf(errmsg, "redirection type expected ('prefix', 'location', or 'scheme')"); |
| 1123 | return NULL; |
| 1124 | } |
| 1125 | |
| 1126 | if (dir && type != REDIRECT_TYPE_LOCATION) { |
| 1127 | memprintf(errmsg, "response only supports redirect type 'location'"); |
| 1128 | return NULL; |
| 1129 | } |
| 1130 | |
| 1131 | rule = calloc(1, sizeof(*rule)); |
Remi Tricot-Le Breton | 4286725 | 2021-05-19 11:32:04 +0200 | [diff] [blame] | 1132 | if (!rule) { |
| 1133 | memprintf(errmsg, "parsing [%s:%d]: out of memory.", file, linenum); |
| 1134 | return NULL; |
| 1135 | } |
Willy Tarreau | 61c112a | 2018-10-02 16:43:32 +0200 | [diff] [blame] | 1136 | rule->cond = cond; |
| 1137 | LIST_INIT(&rule->rdr_fmt); |
| 1138 | |
| 1139 | if (!use_fmt) { |
| 1140 | /* old-style static redirect rule */ |
| 1141 | rule->rdr_str = strdup(destination); |
| 1142 | rule->rdr_len = strlen(destination); |
| 1143 | } |
| 1144 | else { |
| 1145 | /* log-format based redirect rule */ |
| 1146 | |
| 1147 | /* Parse destination. Note that in the REDIRECT_TYPE_PREFIX case, |
| 1148 | * if prefix == "/", we don't want to add anything, otherwise it |
| 1149 | * makes it hard for the user to configure a self-redirection. |
| 1150 | */ |
| 1151 | curproxy->conf.args.ctx = ARGC_RDR; |
| 1152 | if (!(type == REDIRECT_TYPE_PREFIX && destination[0] == '/' && destination[1] == '\0')) { |
| 1153 | if (!parse_logformat_string(destination, curproxy, &rule->rdr_fmt, LOG_OPT_HTTP, |
| 1154 | dir ? (curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRS_HDR : SMP_VAL_BE_HRS_HDR |
| 1155 | : (curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, |
| 1156 | errmsg)) { |
| 1157 | return NULL; |
| 1158 | } |
| 1159 | free(curproxy->conf.lfs_file); |
| 1160 | curproxy->conf.lfs_file = strdup(curproxy->conf.args.file); |
| 1161 | curproxy->conf.lfs_line = curproxy->conf.args.line; |
| 1162 | } |
| 1163 | } |
| 1164 | |
| 1165 | if (cookie) { |
| 1166 | /* depending on cookie_set, either we want to set the cookie, or to clear it. |
| 1167 | * a clear consists in appending "; path=/; Max-Age=0;" at the end. |
| 1168 | */ |
| 1169 | rule->cookie_len = strlen(cookie); |
| 1170 | if (cookie_set) { |
| 1171 | rule->cookie_str = malloc(rule->cookie_len + 10); |
| 1172 | memcpy(rule->cookie_str, cookie, rule->cookie_len); |
| 1173 | memcpy(rule->cookie_str + rule->cookie_len, "; path=/;", 10); |
| 1174 | rule->cookie_len += 9; |
| 1175 | } else { |
| 1176 | rule->cookie_str = malloc(rule->cookie_len + 21); |
| 1177 | memcpy(rule->cookie_str, cookie, rule->cookie_len); |
| 1178 | memcpy(rule->cookie_str + rule->cookie_len, "; path=/; Max-Age=0;", 21); |
| 1179 | rule->cookie_len += 20; |
| 1180 | } |
| 1181 | } |
| 1182 | rule->type = type; |
| 1183 | rule->code = code; |
| 1184 | rule->flags = flags; |
| 1185 | LIST_INIT(&rule->list); |
| 1186 | return rule; |
| 1187 | |
| 1188 | missing_arg: |
| 1189 | memprintf(errmsg, "missing argument for '%s'", args[cur_arg]); |
| 1190 | return NULL; |
| 1191 | } |
| 1192 | |
Willy Tarreau | 61c112a | 2018-10-02 16:43:32 +0200 | [diff] [blame] | 1193 | __attribute__((constructor)) |
| 1194 | static void __http_rules_init(void) |
| 1195 | { |
| 1196 | } |
| 1197 | |
| 1198 | /* |
| 1199 | * Local variables: |
| 1200 | * c-indent-level: 8 |
| 1201 | * c-basic-offset: 8 |
| 1202 | * End: |
| 1203 | */ |