William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 1 | /* |
| 2 | * HTTP compression. |
| 3 | * |
| 4 | * Copyright 2012 Exceliance, David Du Colombier <dducolombier@exceliance.fr> |
| 5 | * William Lallemand <wlallemand@exceliance.fr> |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU General Public License |
| 9 | * as published by the Free Software Foundation; either version |
| 10 | * 2 of the License, or (at your option) any later version. |
| 11 | * |
| 12 | */ |
| 13 | |
| 14 | #include <stdio.h> |
Willy Tarreau | 3476364 | 2012-10-26 15:05:35 +0200 | [diff] [blame] | 15 | |
Willy Tarreau | 418b8c0 | 2015-03-29 03:32:06 +0200 | [diff] [blame] | 16 | #if defined(USE_SLZ) |
| 17 | #include <slz.h> |
| 18 | #elif defined(USE_ZLIB) |
Willy Tarreau | 3476364 | 2012-10-26 15:05:35 +0200 | [diff] [blame] | 19 | /* Note: the crappy zlib and openssl libs both define the "free_func" type. |
| 20 | * That's a very clever idea to use such a generic name in general purpose |
| 21 | * libraries, really... The zlib one is easier to redefine than openssl's, |
| 22 | * so let's only fix this one. |
| 23 | */ |
| 24 | #define free_func zlib_free_func |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 25 | #include <zlib.h> |
Willy Tarreau | 3476364 | 2012-10-26 15:05:35 +0200 | [diff] [blame] | 26 | #undef free_func |
William Lallemand | 08289f1 | 2012-10-31 11:19:18 +0100 | [diff] [blame] | 27 | #endif /* USE_ZLIB */ |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 28 | |
Willy Tarreau | 3687803 | 2016-12-22 19:46:17 +0100 | [diff] [blame] | 29 | #include <common/cfgparse.h> |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 30 | #include <common/compat.h> |
William Lallemand | 2b50247 | 2012-10-30 14:30:39 +0100 | [diff] [blame] | 31 | #include <common/memory.h> |
Christopher Faulet | 8ca3b4b | 2017-07-25 11:07:15 +0200 | [diff] [blame] | 32 | #include <common/hathreads.h> |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 33 | |
| 34 | #include <types/global.h> |
| 35 | #include <types/compression.h> |
| 36 | |
William Lallemand | 727db8b | 2013-04-20 17:33:20 +0200 | [diff] [blame] | 37 | #include <proto/acl.h> |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 38 | #include <proto/compression.h> |
William Lallemand | d85f917 | 2012-11-09 17:05:39 +0100 | [diff] [blame] | 39 | #include <proto/freq_ctr.h> |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 40 | #include <proto/proto_http.h> |
Willy Tarreau | e36cbcb | 2015-04-03 15:40:56 +0200 | [diff] [blame] | 41 | #include <proto/stream.h> |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 42 | |
William Lallemand | 2b50247 | 2012-10-30 14:30:39 +0100 | [diff] [blame] | 43 | |
Emeric Brun | 11f5886 | 2017-11-07 11:57:54 +0100 | [diff] [blame] | 44 | #if defined(USE_SLZ) || defined(USE_ZLIB) |
Christopher Faulet | 8ca3b4b | 2017-07-25 11:07:15 +0200 | [diff] [blame] | 45 | #ifdef USE_THREAD |
| 46 | static HA_SPINLOCK_T comp_pool_lock; |
| 47 | #endif |
Emeric Brun | 11f5886 | 2017-11-07 11:57:54 +0100 | [diff] [blame] | 48 | #endif |
Christopher Faulet | 8ca3b4b | 2017-07-25 11:07:15 +0200 | [diff] [blame] | 49 | |
William Lallemand | 2b50247 | 2012-10-30 14:30:39 +0100 | [diff] [blame] | 50 | #ifdef USE_ZLIB |
| 51 | |
William Lallemand | 8b52bb3 | 2012-11-16 18:06:41 +0100 | [diff] [blame] | 52 | static void *alloc_zlib(void *opaque, unsigned int items, unsigned int size); |
| 53 | static void free_zlib(void *opaque, void *ptr); |
| 54 | |
William Lallemand | 2b50247 | 2012-10-30 14:30:39 +0100 | [diff] [blame] | 55 | /* zlib allocation */ |
| 56 | static struct pool_head *zlib_pool_deflate_state = NULL; |
| 57 | static struct pool_head *zlib_pool_window = NULL; |
| 58 | static struct pool_head *zlib_pool_prev = NULL; |
| 59 | static struct pool_head *zlib_pool_head = NULL; |
| 60 | static struct pool_head *zlib_pool_pending_buf = NULL; |
| 61 | |
William Lallemand | e3a7d99 | 2012-11-20 11:25:20 +0100 | [diff] [blame] | 62 | long zlib_used_memory = 0; |
William Lallemand | 9d5f548 | 2012-11-07 16:12:57 +0100 | [diff] [blame] | 63 | |
Willy Tarreau | 3687803 | 2016-12-22 19:46:17 +0100 | [diff] [blame] | 64 | static int global_tune_zlibmemlevel = 8; /* zlib memlevel */ |
| 65 | static int global_tune_zlibwindowsize = MAX_WBITS; /* zlib window size */ |
| 66 | |
William Lallemand | 2b50247 | 2012-10-30 14:30:39 +0100 | [diff] [blame] | 67 | #endif |
| 68 | |
William Lallemand | 072a2bf | 2012-11-20 17:01:01 +0100 | [diff] [blame] | 69 | unsigned int compress_min_idle = 0; |
William Lallemand | 8b52bb3 | 2012-11-16 18:06:41 +0100 | [diff] [blame] | 70 | |
Willy Tarreau | 9f640a1 | 2015-03-28 15:46:00 +0100 | [diff] [blame] | 71 | static int identity_init(struct comp_ctx **comp_ctx, int level); |
| 72 | static int identity_add_data(struct comp_ctx *comp_ctx, const char *in_data, int in_len, struct buffer *out); |
Willy Tarreau | 9787efa | 2015-03-28 19:17:31 +0100 | [diff] [blame] | 73 | static int identity_flush(struct comp_ctx *comp_ctx, struct buffer *out); |
| 74 | static int identity_finish(struct comp_ctx *comp_ctx, struct buffer *out); |
Willy Tarreau | 9f640a1 | 2015-03-28 15:46:00 +0100 | [diff] [blame] | 75 | static int identity_end(struct comp_ctx **comp_ctx); |
| 76 | |
Willy Tarreau | 418b8c0 | 2015-03-29 03:32:06 +0200 | [diff] [blame] | 77 | #if defined(USE_SLZ) |
| 78 | |
| 79 | static int rfc1950_init(struct comp_ctx **comp_ctx, int level); |
| 80 | static int rfc1951_init(struct comp_ctx **comp_ctx, int level); |
| 81 | static int rfc1952_init(struct comp_ctx **comp_ctx, int level); |
| 82 | static int rfc195x_add_data(struct comp_ctx *comp_ctx, const char *in_data, int in_len, struct buffer *out); |
| 83 | static int rfc195x_flush(struct comp_ctx *comp_ctx, struct buffer *out); |
| 84 | static int rfc195x_finish(struct comp_ctx *comp_ctx, struct buffer *out); |
| 85 | static int rfc195x_end(struct comp_ctx **comp_ctx); |
| 86 | |
| 87 | #elif defined(USE_ZLIB) |
Willy Tarreau | 7b21877 | 2015-03-28 22:08:25 +0100 | [diff] [blame] | 88 | |
Willy Tarreau | 9f640a1 | 2015-03-28 15:46:00 +0100 | [diff] [blame] | 89 | static int gzip_init(struct comp_ctx **comp_ctx, int level); |
Willy Tarreau | c91840a | 2015-03-28 17:00:39 +0100 | [diff] [blame] | 90 | static int raw_def_init(struct comp_ctx **comp_ctx, int level); |
Willy Tarreau | 9f640a1 | 2015-03-28 15:46:00 +0100 | [diff] [blame] | 91 | static int deflate_init(struct comp_ctx **comp_ctx, int level); |
| 92 | static int deflate_add_data(struct comp_ctx *comp_ctx, const char *in_data, int in_len, struct buffer *out); |
Willy Tarreau | 9787efa | 2015-03-28 19:17:31 +0100 | [diff] [blame] | 93 | static int deflate_flush(struct comp_ctx *comp_ctx, struct buffer *out); |
| 94 | static int deflate_finish(struct comp_ctx *comp_ctx, struct buffer *out); |
Willy Tarreau | 9f640a1 | 2015-03-28 15:46:00 +0100 | [diff] [blame] | 95 | static int deflate_end(struct comp_ctx **comp_ctx); |
Willy Tarreau | 7b21877 | 2015-03-28 22:08:25 +0100 | [diff] [blame] | 96 | |
Willy Tarreau | 9f640a1 | 2015-03-28 15:46:00 +0100 | [diff] [blame] | 97 | #endif /* USE_ZLIB */ |
| 98 | |
William Lallemand | 2b50247 | 2012-10-30 14:30:39 +0100 | [diff] [blame] | 99 | |
Cyril Bonté | 6162c43 | 2012-11-10 19:27:47 +0100 | [diff] [blame] | 100 | const struct comp_algo comp_algos[] = |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 101 | { |
Willy Tarreau | 7b21877 | 2015-03-28 22:08:25 +0100 | [diff] [blame] | 102 | { "identity", 8, "identity", 8, identity_init, identity_add_data, identity_flush, identity_finish, identity_end }, |
Willy Tarreau | 418b8c0 | 2015-03-29 03:32:06 +0200 | [diff] [blame] | 103 | #if defined(USE_SLZ) |
| 104 | { "deflate", 7, "deflate", 7, rfc1950_init, rfc195x_add_data, rfc195x_flush, rfc195x_finish, rfc195x_end }, |
| 105 | { "raw-deflate", 11, "deflate", 7, rfc1951_init, rfc195x_add_data, rfc195x_flush, rfc195x_finish, rfc195x_end }, |
| 106 | { "gzip", 4, "gzip", 4, rfc1952_init, rfc195x_add_data, rfc195x_flush, rfc195x_finish, rfc195x_end }, |
| 107 | #elif defined(USE_ZLIB) |
Willy Tarreau | 7b21877 | 2015-03-28 22:08:25 +0100 | [diff] [blame] | 108 | { "deflate", 7, "deflate", 7, deflate_init, deflate_add_data, deflate_flush, deflate_finish, deflate_end }, |
| 109 | { "raw-deflate", 11, "deflate", 7, raw_def_init, deflate_add_data, deflate_flush, deflate_finish, deflate_end }, |
| 110 | { "gzip", 4, "gzip", 4, gzip_init, deflate_add_data, deflate_flush, deflate_finish, deflate_end }, |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 111 | #endif /* USE_ZLIB */ |
Willy Tarreau | 615105e | 2015-03-28 16:40:46 +0100 | [diff] [blame] | 112 | { NULL, 0, NULL, 0, NULL , NULL, NULL, NULL, NULL } |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 113 | }; |
| 114 | |
| 115 | /* |
| 116 | * Add a content-type in the configuration |
| 117 | */ |
| 118 | int comp_append_type(struct comp *comp, const char *type) |
| 119 | { |
| 120 | struct comp_type *comp_type; |
| 121 | |
Vincent Bernat | 02779b6 | 2016-04-03 13:48:43 +0200 | [diff] [blame] | 122 | comp_type = calloc(1, sizeof(*comp_type)); |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 123 | comp_type->name_len = strlen(type); |
| 124 | comp_type->name = strdup(type); |
| 125 | comp_type->next = comp->types; |
| 126 | comp->types = comp_type; |
| 127 | return 0; |
| 128 | } |
| 129 | |
| 130 | /* |
| 131 | * Add an algorithm in the configuration |
| 132 | */ |
| 133 | int comp_append_algo(struct comp *comp, const char *algo) |
| 134 | { |
| 135 | struct comp_algo *comp_algo; |
| 136 | int i; |
| 137 | |
Willy Tarreau | 615105e | 2015-03-28 16:40:46 +0100 | [diff] [blame] | 138 | for (i = 0; comp_algos[i].cfg_name; i++) { |
| 139 | if (!strcmp(algo, comp_algos[i].cfg_name)) { |
Vincent Bernat | 02779b6 | 2016-04-03 13:48:43 +0200 | [diff] [blame] | 140 | comp_algo = calloc(1, sizeof(*comp_algo)); |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 141 | memmove(comp_algo, &comp_algos[i], sizeof(struct comp_algo)); |
| 142 | comp_algo->next = comp->algos; |
| 143 | comp->algos = comp_algo; |
| 144 | return 0; |
| 145 | } |
| 146 | } |
| 147 | return -1; |
| 148 | } |
| 149 | |
Willy Tarreau | e1cc4b5 | 2016-08-10 21:17:06 +0200 | [diff] [blame] | 150 | #if defined(USE_ZLIB) || defined(USE_SLZ) |
| 151 | static struct pool_head *pool_comp_ctx = NULL; |
William Lallemand | 8b52bb3 | 2012-11-16 18:06:41 +0100 | [diff] [blame] | 152 | /* |
| 153 | * Alloc the comp_ctx |
| 154 | */ |
| 155 | static inline int init_comp_ctx(struct comp_ctx **comp_ctx) |
| 156 | { |
| 157 | #ifdef USE_ZLIB |
| 158 | z_stream *strm; |
| 159 | |
William Lallemand | e3a7d99 | 2012-11-20 11:25:20 +0100 | [diff] [blame] | 160 | if (global.maxzlibmem > 0 && (global.maxzlibmem - zlib_used_memory) < sizeof(struct comp_ctx)) |
William Lallemand | 8b52bb3 | 2012-11-16 18:06:41 +0100 | [diff] [blame] | 161 | return -1; |
| 162 | #endif |
| 163 | |
Christopher Faulet | 8ca3b4b | 2017-07-25 11:07:15 +0200 | [diff] [blame] | 164 | if (unlikely(pool_comp_ctx == NULL)) { |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 165 | HA_SPIN_LOCK(COMP_POOL_LOCK, &comp_pool_lock); |
Christopher Faulet | 8ca3b4b | 2017-07-25 11:07:15 +0200 | [diff] [blame] | 166 | if (unlikely(pool_comp_ctx == NULL)) |
| 167 | pool_comp_ctx = create_pool("comp_ctx", sizeof(struct comp_ctx), MEM_F_SHARED); |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 168 | HA_SPIN_UNLOCK(COMP_POOL_LOCK, &comp_pool_lock); |
Christopher Faulet | 8ca3b4b | 2017-07-25 11:07:15 +0200 | [diff] [blame] | 169 | } |
William Lallemand | 8b52bb3 | 2012-11-16 18:06:41 +0100 | [diff] [blame] | 170 | |
| 171 | *comp_ctx = pool_alloc2(pool_comp_ctx); |
| 172 | if (*comp_ctx == NULL) |
| 173 | return -1; |
Willy Tarreau | 418b8c0 | 2015-03-29 03:32:06 +0200 | [diff] [blame] | 174 | #if defined(USE_SLZ) |
| 175 | (*comp_ctx)->direct_ptr = NULL; |
| 176 | (*comp_ctx)->direct_len = 0; |
| 177 | (*comp_ctx)->queued = NULL; |
| 178 | #elif defined(USE_ZLIB) |
Christopher Faulet | 8ca3b4b | 2017-07-25 11:07:15 +0200 | [diff] [blame] | 179 | HA_ATOMIC_ADD(&zlib_used_memory, sizeof(struct comp_ctx)); |
William Lallemand | 8b52bb3 | 2012-11-16 18:06:41 +0100 | [diff] [blame] | 180 | |
| 181 | strm = &(*comp_ctx)->strm; |
| 182 | strm->zalloc = alloc_zlib; |
| 183 | strm->zfree = free_zlib; |
| 184 | strm->opaque = *comp_ctx; |
| 185 | #endif |
| 186 | return 0; |
| 187 | } |
| 188 | |
| 189 | /* |
| 190 | * Dealloc the comp_ctx |
| 191 | */ |
| 192 | static inline int deinit_comp_ctx(struct comp_ctx **comp_ctx) |
| 193 | { |
| 194 | if (!*comp_ctx) |
| 195 | return 0; |
| 196 | |
| 197 | pool_free2(pool_comp_ctx, *comp_ctx); |
| 198 | *comp_ctx = NULL; |
| 199 | |
| 200 | #ifdef USE_ZLIB |
Christopher Faulet | 8ca3b4b | 2017-07-25 11:07:15 +0200 | [diff] [blame] | 201 | HA_ATOMIC_SUB(&zlib_used_memory, sizeof(struct comp_ctx)); |
William Lallemand | 8b52bb3 | 2012-11-16 18:06:41 +0100 | [diff] [blame] | 202 | #endif |
William Lallemand | 8b52bb3 | 2012-11-16 18:06:41 +0100 | [diff] [blame] | 203 | return 0; |
| 204 | } |
Willy Tarreau | e1cc4b5 | 2016-08-10 21:17:06 +0200 | [diff] [blame] | 205 | #endif |
William Lallemand | 8b52bb3 | 2012-11-16 18:06:41 +0100 | [diff] [blame] | 206 | |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 207 | |
| 208 | /**************************** |
| 209 | **** Identity algorithm **** |
| 210 | ****************************/ |
| 211 | |
| 212 | /* |
| 213 | * Init the identity algorithm |
| 214 | */ |
Willy Tarreau | 9f640a1 | 2015-03-28 15:46:00 +0100 | [diff] [blame] | 215 | static int identity_init(struct comp_ctx **comp_ctx, int level) |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 216 | { |
| 217 | return 0; |
| 218 | } |
| 219 | |
| 220 | /* |
| 221 | * Process data |
William Lallemand | bf3ae61 | 2012-11-19 12:35:37 +0100 | [diff] [blame] | 222 | * Return size of consumed data or -1 on error |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 223 | */ |
Willy Tarreau | 9f640a1 | 2015-03-28 15:46:00 +0100 | [diff] [blame] | 224 | static int identity_add_data(struct comp_ctx *comp_ctx, const char *in_data, int in_len, struct buffer *out) |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 225 | { |
William Lallemand | bf3ae61 | 2012-11-19 12:35:37 +0100 | [diff] [blame] | 226 | char *out_data = bi_end(out); |
| 227 | int out_len = out->size - buffer_len(out); |
| 228 | |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 229 | if (out_len < in_len) |
| 230 | return -1; |
| 231 | |
| 232 | memcpy(out_data, in_data, in_len); |
| 233 | |
William Lallemand | bf3ae61 | 2012-11-19 12:35:37 +0100 | [diff] [blame] | 234 | out->i += in_len; |
| 235 | |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 236 | return in_len; |
| 237 | } |
| 238 | |
Willy Tarreau | 9787efa | 2015-03-28 19:17:31 +0100 | [diff] [blame] | 239 | static int identity_flush(struct comp_ctx *comp_ctx, struct buffer *out) |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 240 | { |
| 241 | return 0; |
| 242 | } |
| 243 | |
Willy Tarreau | 9787efa | 2015-03-28 19:17:31 +0100 | [diff] [blame] | 244 | static int identity_finish(struct comp_ctx *comp_ctx, struct buffer *out) |
| 245 | { |
| 246 | return 0; |
| 247 | } |
| 248 | |
Willy Tarreau | 418b8c0 | 2015-03-29 03:32:06 +0200 | [diff] [blame] | 249 | /* |
| 250 | * Deinit the algorithm |
| 251 | */ |
| 252 | static int identity_end(struct comp_ctx **comp_ctx) |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 253 | { |
| 254 | return 0; |
| 255 | } |
| 256 | |
Willy Tarreau | 418b8c0 | 2015-03-29 03:32:06 +0200 | [diff] [blame] | 257 | |
| 258 | #ifdef USE_SLZ |
| 259 | |
| 260 | /* SLZ's gzip format (RFC1952). Returns < 0 on error. */ |
| 261 | static int rfc1952_init(struct comp_ctx **comp_ctx, int level) |
| 262 | { |
| 263 | if (init_comp_ctx(comp_ctx) < 0) |
| 264 | return -1; |
| 265 | |
| 266 | (*comp_ctx)->cur_lvl = !!level; |
| 267 | return slz_rfc1952_init(&(*comp_ctx)->strm, !!level); |
| 268 | } |
| 269 | |
| 270 | /* SLZ's raw deflate format (RFC1951). Returns < 0 on error. */ |
| 271 | static int rfc1951_init(struct comp_ctx **comp_ctx, int level) |
| 272 | { |
| 273 | if (init_comp_ctx(comp_ctx) < 0) |
| 274 | return -1; |
| 275 | |
| 276 | (*comp_ctx)->cur_lvl = !!level; |
| 277 | return slz_rfc1951_init(&(*comp_ctx)->strm, !!level); |
| 278 | } |
| 279 | |
| 280 | /* SLZ's zlib format (RFC1950). Returns < 0 on error. */ |
| 281 | static int rfc1950_init(struct comp_ctx **comp_ctx, int level) |
| 282 | { |
| 283 | if (init_comp_ctx(comp_ctx) < 0) |
| 284 | return -1; |
| 285 | |
| 286 | (*comp_ctx)->cur_lvl = !!level; |
| 287 | return slz_rfc1950_init(&(*comp_ctx)->strm, !!level); |
| 288 | } |
| 289 | |
| 290 | /* Return the size of consumed data or -1. The output buffer is unused at this |
| 291 | * point, we only keep a reference to the input data or a copy of them if the |
| 292 | * reference is already used. |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 293 | */ |
Willy Tarreau | 418b8c0 | 2015-03-29 03:32:06 +0200 | [diff] [blame] | 294 | static int rfc195x_add_data(struct comp_ctx *comp_ctx, const char *in_data, int in_len, struct buffer *out) |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 295 | { |
Christopher Faulet | 8ca3b4b | 2017-07-25 11:07:15 +0200 | [diff] [blame] | 296 | static THREAD_LOCAL struct buffer *tmpbuf = &buf_empty; |
Willy Tarreau | 418b8c0 | 2015-03-29 03:32:06 +0200 | [diff] [blame] | 297 | |
| 298 | if (in_len <= 0) |
| 299 | return 0; |
| 300 | |
| 301 | if (comp_ctx->direct_ptr && !comp_ctx->queued) { |
| 302 | /* data already being pointed to, we're in front of fragmented |
| 303 | * data and need a buffer now. We reuse the same buffer, as it's |
| 304 | * not used out of the scope of a series of add_data()*, end(). |
| 305 | */ |
| 306 | if (unlikely(!tmpbuf->size)) { |
| 307 | /* this is the first time we need the compression buffer */ |
| 308 | if (b_alloc(&tmpbuf) == NULL) |
| 309 | return -1; /* no memory */ |
| 310 | } |
| 311 | b_reset(tmpbuf); |
| 312 | memcpy(bi_end(tmpbuf), comp_ctx->direct_ptr, comp_ctx->direct_len); |
| 313 | tmpbuf->i += comp_ctx->direct_len; |
| 314 | comp_ctx->direct_ptr = NULL; |
| 315 | comp_ctx->direct_len = 0; |
| 316 | comp_ctx->queued = tmpbuf; |
| 317 | /* fall through buffer copy */ |
| 318 | } |
| 319 | |
| 320 | if (comp_ctx->queued) { |
| 321 | /* data already pending */ |
| 322 | memcpy(bi_end(comp_ctx->queued), in_data, in_len); |
| 323 | comp_ctx->queued->i += in_len; |
| 324 | return in_len; |
| 325 | } |
| 326 | |
| 327 | comp_ctx->direct_ptr = in_data; |
| 328 | comp_ctx->direct_len = in_len; |
| 329 | return in_len; |
| 330 | } |
| 331 | |
| 332 | /* Compresses the data accumulated using add_data(), and optionally sends the |
| 333 | * format-specific trailer if <finish> is non-null. <out> is expected to have a |
| 334 | * large enough free non-wrapping space as verified by http_comp_buffer_init(). |
| 335 | * The number of bytes emitted is reported. |
| 336 | */ |
| 337 | static int rfc195x_flush_or_finish(struct comp_ctx *comp_ctx, struct buffer *out, int finish) |
| 338 | { |
| 339 | struct slz_stream *strm = &comp_ctx->strm; |
| 340 | const char *in_ptr; |
| 341 | int in_len; |
| 342 | int out_len; |
| 343 | |
| 344 | in_ptr = comp_ctx->direct_ptr; |
| 345 | in_len = comp_ctx->direct_len; |
| 346 | |
| 347 | if (comp_ctx->queued) { |
| 348 | in_ptr = comp_ctx->queued->p; |
| 349 | in_len = comp_ctx->queued->i; |
| 350 | } |
| 351 | |
| 352 | out_len = out->i; |
| 353 | |
| 354 | if (in_ptr) |
| 355 | out->i += slz_encode(strm, bi_end(out), in_ptr, in_len, !finish); |
| 356 | |
| 357 | if (finish) |
| 358 | out->i += slz_finish(strm, bi_end(out)); |
| 359 | |
| 360 | out_len = out->i - out_len; |
| 361 | |
| 362 | /* very important, we must wipe the data we've just flushed */ |
| 363 | comp_ctx->direct_len = 0; |
| 364 | comp_ctx->direct_ptr = NULL; |
| 365 | comp_ctx->queued = NULL; |
| 366 | |
| 367 | /* Verify compression rate limiting and CPU usage */ |
| 368 | if ((global.comp_rate_lim > 0 && (read_freq_ctr(&global.comp_bps_out) > global.comp_rate_lim)) || /* rate */ |
| 369 | (idle_pct < compress_min_idle)) { /* idle */ |
| 370 | if (comp_ctx->cur_lvl > 0) |
| 371 | strm->level = --comp_ctx->cur_lvl; |
| 372 | } |
| 373 | else if (comp_ctx->cur_lvl < global.tune.comp_maxlevel && comp_ctx->cur_lvl < 1) { |
| 374 | strm->level = ++comp_ctx->cur_lvl; |
| 375 | } |
| 376 | |
| 377 | /* and that's all */ |
| 378 | return out_len; |
| 379 | } |
| 380 | |
| 381 | static int rfc195x_flush(struct comp_ctx *comp_ctx, struct buffer *out) |
| 382 | { |
| 383 | return rfc195x_flush_or_finish(comp_ctx, out, 0); |
| 384 | } |
| 385 | |
| 386 | static int rfc195x_finish(struct comp_ctx *comp_ctx, struct buffer *out) |
| 387 | { |
| 388 | return rfc195x_flush_or_finish(comp_ctx, out, 1); |
| 389 | } |
| 390 | |
| 391 | /* we just need to free the comp_ctx here, nothing was allocated */ |
| 392 | static int rfc195x_end(struct comp_ctx **comp_ctx) |
| 393 | { |
| 394 | deinit_comp_ctx(comp_ctx); |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 395 | return 0; |
| 396 | } |
| 397 | |
Willy Tarreau | 418b8c0 | 2015-03-29 03:32:06 +0200 | [diff] [blame] | 398 | #elif defined(USE_ZLIB) /* ! USE_SLZ */ |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 399 | |
William Lallemand | 2b50247 | 2012-10-30 14:30:39 +0100 | [diff] [blame] | 400 | /* |
| 401 | * This is a tricky allocation function using the zlib. |
| 402 | * This is based on the allocation order in deflateInit2. |
| 403 | */ |
| 404 | static void *alloc_zlib(void *opaque, unsigned int items, unsigned int size) |
| 405 | { |
| 406 | struct comp_ctx *ctx = opaque; |
Christopher Faulet | 8ca3b4b | 2017-07-25 11:07:15 +0200 | [diff] [blame] | 407 | static THREAD_LOCAL char round = 0; /* order in deflateInit2 */ |
William Lallemand | 2b50247 | 2012-10-30 14:30:39 +0100 | [diff] [blame] | 408 | void *buf = NULL; |
Willy Tarreau | 4f31fc2 | 2014-12-24 18:07:55 +0100 | [diff] [blame] | 409 | struct pool_head *pool = NULL; |
William Lallemand | 2b50247 | 2012-10-30 14:30:39 +0100 | [diff] [blame] | 410 | |
William Lallemand | e3a7d99 | 2012-11-20 11:25:20 +0100 | [diff] [blame] | 411 | if (global.maxzlibmem > 0 && (global.maxzlibmem - zlib_used_memory) < (long)(items * size)) |
William Lallemand | 9d5f548 | 2012-11-07 16:12:57 +0100 | [diff] [blame] | 412 | goto end; |
William Lallemand | 9d5f548 | 2012-11-07 16:12:57 +0100 | [diff] [blame] | 413 | |
William Lallemand | 2b50247 | 2012-10-30 14:30:39 +0100 | [diff] [blame] | 414 | switch (round) { |
| 415 | case 0: |
Christopher Faulet | 8ca3b4b | 2017-07-25 11:07:15 +0200 | [diff] [blame] | 416 | if (zlib_pool_deflate_state == NULL) { |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 417 | HA_SPIN_LOCK(COMP_POOL_LOCK, &comp_pool_lock); |
Christopher Faulet | 8ca3b4b | 2017-07-25 11:07:15 +0200 | [diff] [blame] | 418 | if (zlib_pool_deflate_state == NULL) |
| 419 | zlib_pool_deflate_state = create_pool("zlib_state", size * items, MEM_F_SHARED); |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 420 | HA_SPIN_UNLOCK(COMP_POOL_LOCK, &comp_pool_lock); |
Christopher Faulet | 8ca3b4b | 2017-07-25 11:07:15 +0200 | [diff] [blame] | 421 | } |
Willy Tarreau | 4f31fc2 | 2014-12-24 18:07:55 +0100 | [diff] [blame] | 422 | pool = zlib_pool_deflate_state; |
| 423 | ctx->zlib_deflate_state = buf = pool_alloc2(pool); |
William Lallemand | 2b50247 | 2012-10-30 14:30:39 +0100 | [diff] [blame] | 424 | break; |
| 425 | |
| 426 | case 1: |
Christopher Faulet | 8ca3b4b | 2017-07-25 11:07:15 +0200 | [diff] [blame] | 427 | if (zlib_pool_window == NULL) { |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 428 | HA_SPIN_LOCK(COMP_POOL_LOCK, &comp_pool_lock); |
Christopher Faulet | 8ca3b4b | 2017-07-25 11:07:15 +0200 | [diff] [blame] | 429 | if (zlib_pool_window == NULL) |
| 430 | zlib_pool_window = create_pool("zlib_window", size * items, MEM_F_SHARED); |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 431 | HA_SPIN_UNLOCK(COMP_POOL_LOCK, &comp_pool_lock); |
Christopher Faulet | 8ca3b4b | 2017-07-25 11:07:15 +0200 | [diff] [blame] | 432 | } |
Willy Tarreau | 4f31fc2 | 2014-12-24 18:07:55 +0100 | [diff] [blame] | 433 | pool = zlib_pool_window; |
| 434 | ctx->zlib_window = buf = pool_alloc2(pool); |
William Lallemand | 2b50247 | 2012-10-30 14:30:39 +0100 | [diff] [blame] | 435 | break; |
| 436 | |
| 437 | case 2: |
Christopher Faulet | 8ca3b4b | 2017-07-25 11:07:15 +0200 | [diff] [blame] | 438 | if (zlib_pool_prev == NULL) { |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 439 | HA_SPIN_LOCK(COMP_POOL_LOCK, &comp_pool_lock); |
Christopher Faulet | 8ca3b4b | 2017-07-25 11:07:15 +0200 | [diff] [blame] | 440 | if (zlib_pool_prev == NULL) |
| 441 | zlib_pool_prev = create_pool("zlib_prev", size * items, MEM_F_SHARED); |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 442 | HA_SPIN_UNLOCK(COMP_POOL_LOCK, &comp_pool_lock); |
Christopher Faulet | 8ca3b4b | 2017-07-25 11:07:15 +0200 | [diff] [blame] | 443 | } |
Willy Tarreau | 4f31fc2 | 2014-12-24 18:07:55 +0100 | [diff] [blame] | 444 | pool = zlib_pool_prev; |
| 445 | ctx->zlib_prev = buf = pool_alloc2(pool); |
William Lallemand | 2b50247 | 2012-10-30 14:30:39 +0100 | [diff] [blame] | 446 | break; |
| 447 | |
| 448 | case 3: |
Christopher Faulet | 8ca3b4b | 2017-07-25 11:07:15 +0200 | [diff] [blame] | 449 | if (zlib_pool_head == NULL) { |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 450 | HA_SPIN_LOCK(COMP_POOL_LOCK, &comp_pool_lock); |
Christopher Faulet | 8ca3b4b | 2017-07-25 11:07:15 +0200 | [diff] [blame] | 451 | if (zlib_pool_head == NULL) |
| 452 | zlib_pool_head = create_pool("zlib_head", size * items, MEM_F_SHARED); |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 453 | HA_SPIN_UNLOCK(COMP_POOL_LOCK, &comp_pool_lock); |
Christopher Faulet | 8ca3b4b | 2017-07-25 11:07:15 +0200 | [diff] [blame] | 454 | } |
Willy Tarreau | 4f31fc2 | 2014-12-24 18:07:55 +0100 | [diff] [blame] | 455 | pool = zlib_pool_head; |
| 456 | ctx->zlib_head = buf = pool_alloc2(pool); |
William Lallemand | 2b50247 | 2012-10-30 14:30:39 +0100 | [diff] [blame] | 457 | break; |
| 458 | |
| 459 | case 4: |
Christopher Faulet | 8ca3b4b | 2017-07-25 11:07:15 +0200 | [diff] [blame] | 460 | if (zlib_pool_pending_buf == NULL) { |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 461 | HA_SPIN_LOCK(COMP_POOL_LOCK, &comp_pool_lock); |
Christopher Faulet | 8ca3b4b | 2017-07-25 11:07:15 +0200 | [diff] [blame] | 462 | if (zlib_pool_pending_buf == NULL) |
| 463 | zlib_pool_pending_buf = create_pool("zlib_pending_buf", size * items, MEM_F_SHARED); |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 464 | HA_SPIN_UNLOCK(COMP_POOL_LOCK, &comp_pool_lock); |
Christopher Faulet | 8ca3b4b | 2017-07-25 11:07:15 +0200 | [diff] [blame] | 465 | } |
Willy Tarreau | 4f31fc2 | 2014-12-24 18:07:55 +0100 | [diff] [blame] | 466 | pool = zlib_pool_pending_buf; |
| 467 | ctx->zlib_pending_buf = buf = pool_alloc2(pool); |
William Lallemand | 2b50247 | 2012-10-30 14:30:39 +0100 | [diff] [blame] | 468 | break; |
| 469 | } |
William Lallemand | e3a7d99 | 2012-11-20 11:25:20 +0100 | [diff] [blame] | 470 | if (buf != NULL) |
Christopher Faulet | 8ca3b4b | 2017-07-25 11:07:15 +0200 | [diff] [blame] | 471 | HA_ATOMIC_ADD(&zlib_used_memory, pool->size); |
William Lallemand | 9d5f548 | 2012-11-07 16:12:57 +0100 | [diff] [blame] | 472 | |
| 473 | end: |
William Lallemand | 2b50247 | 2012-10-30 14:30:39 +0100 | [diff] [blame] | 474 | |
Willy Tarreau | 4690985 | 2012-11-15 14:57:56 +0100 | [diff] [blame] | 475 | /* deflateInit2() first allocates and checks the deflate_state, then if |
| 476 | * it succeeds, it allocates all other 4 areas at ones and checks them |
| 477 | * at the end. So we want to correctly count the rounds depending on when |
| 478 | * zlib is supposed to abort. |
| 479 | */ |
| 480 | if (buf || round) |
| 481 | round = (round + 1) % 5; |
William Lallemand | 2b50247 | 2012-10-30 14:30:39 +0100 | [diff] [blame] | 482 | return buf; |
| 483 | } |
| 484 | |
| 485 | static void free_zlib(void *opaque, void *ptr) |
| 486 | { |
| 487 | struct comp_ctx *ctx = opaque; |
Willy Tarreau | b1fbd05 | 2012-11-10 17:49:37 +0100 | [diff] [blame] | 488 | struct pool_head *pool = NULL; |
William Lallemand | 2b50247 | 2012-10-30 14:30:39 +0100 | [diff] [blame] | 489 | |
| 490 | if (ptr == ctx->zlib_window) |
William Lallemand | 9d5f548 | 2012-11-07 16:12:57 +0100 | [diff] [blame] | 491 | pool = zlib_pool_window; |
William Lallemand | 2b50247 | 2012-10-30 14:30:39 +0100 | [diff] [blame] | 492 | else if (ptr == ctx->zlib_deflate_state) |
William Lallemand | 9d5f548 | 2012-11-07 16:12:57 +0100 | [diff] [blame] | 493 | pool = zlib_pool_deflate_state; |
William Lallemand | 2b50247 | 2012-10-30 14:30:39 +0100 | [diff] [blame] | 494 | else if (ptr == ctx->zlib_prev) |
William Lallemand | 9d5f548 | 2012-11-07 16:12:57 +0100 | [diff] [blame] | 495 | pool = zlib_pool_prev; |
William Lallemand | 2b50247 | 2012-10-30 14:30:39 +0100 | [diff] [blame] | 496 | else if (ptr == ctx->zlib_head) |
William Lallemand | 9d5f548 | 2012-11-07 16:12:57 +0100 | [diff] [blame] | 497 | pool = zlib_pool_head; |
William Lallemand | 2b50247 | 2012-10-30 14:30:39 +0100 | [diff] [blame] | 498 | else if (ptr == ctx->zlib_pending_buf) |
William Lallemand | 9d5f548 | 2012-11-07 16:12:57 +0100 | [diff] [blame] | 499 | pool = zlib_pool_pending_buf; |
William Lallemand | 2b50247 | 2012-10-30 14:30:39 +0100 | [diff] [blame] | 500 | |
William Lallemand | 9d5f548 | 2012-11-07 16:12:57 +0100 | [diff] [blame] | 501 | pool_free2(pool, ptr); |
Christopher Faulet | 8ca3b4b | 2017-07-25 11:07:15 +0200 | [diff] [blame] | 502 | HA_ATOMIC_SUB(&zlib_used_memory, pool->size); |
William Lallemand | 2b50247 | 2012-10-30 14:30:39 +0100 | [diff] [blame] | 503 | } |
| 504 | |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 505 | /************************** |
| 506 | **** gzip algorithm **** |
| 507 | ***************************/ |
Willy Tarreau | 9f640a1 | 2015-03-28 15:46:00 +0100 | [diff] [blame] | 508 | static int gzip_init(struct comp_ctx **comp_ctx, int level) |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 509 | { |
William Lallemand | 8b52bb3 | 2012-11-16 18:06:41 +0100 | [diff] [blame] | 510 | z_stream *strm; |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 511 | |
William Lallemand | 8b52bb3 | 2012-11-16 18:06:41 +0100 | [diff] [blame] | 512 | if (init_comp_ctx(comp_ctx) < 0) |
| 513 | return -1; |
William Lallemand | 9d5f548 | 2012-11-07 16:12:57 +0100 | [diff] [blame] | 514 | |
William Lallemand | 8b52bb3 | 2012-11-16 18:06:41 +0100 | [diff] [blame] | 515 | strm = &(*comp_ctx)->strm; |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 516 | |
Willy Tarreau | 3687803 | 2016-12-22 19:46:17 +0100 | [diff] [blame] | 517 | if (deflateInit2(strm, level, Z_DEFLATED, global_tune_zlibwindowsize + 16, global_tune_zlibmemlevel, Z_DEFAULT_STRATEGY) != Z_OK) { |
William Lallemand | 8b52bb3 | 2012-11-16 18:06:41 +0100 | [diff] [blame] | 518 | deinit_comp_ctx(comp_ctx); |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 519 | return -1; |
William Lallemand | 8b52bb3 | 2012-11-16 18:06:41 +0100 | [diff] [blame] | 520 | } |
| 521 | |
| 522 | (*comp_ctx)->cur_lvl = level; |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 523 | |
| 524 | return 0; |
| 525 | } |
Willy Tarreau | c91840a | 2015-03-28 17:00:39 +0100 | [diff] [blame] | 526 | |
| 527 | /* Raw deflate algorithm */ |
| 528 | static int raw_def_init(struct comp_ctx **comp_ctx, int level) |
| 529 | { |
| 530 | z_stream *strm; |
| 531 | |
| 532 | if (init_comp_ctx(comp_ctx) < 0) |
| 533 | return -1; |
| 534 | |
| 535 | strm = &(*comp_ctx)->strm; |
| 536 | |
Willy Tarreau | 3687803 | 2016-12-22 19:46:17 +0100 | [diff] [blame] | 537 | if (deflateInit2(strm, level, Z_DEFLATED, -global_tune_zlibwindowsize, global_tune_zlibmemlevel, Z_DEFAULT_STRATEGY) != Z_OK) { |
Willy Tarreau | c91840a | 2015-03-28 17:00:39 +0100 | [diff] [blame] | 538 | deinit_comp_ctx(comp_ctx); |
| 539 | return -1; |
| 540 | } |
| 541 | |
| 542 | (*comp_ctx)->cur_lvl = level; |
| 543 | return 0; |
| 544 | } |
| 545 | |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 546 | /************************** |
| 547 | **** Deflate algorithm **** |
| 548 | ***************************/ |
| 549 | |
Willy Tarreau | 9f640a1 | 2015-03-28 15:46:00 +0100 | [diff] [blame] | 550 | static int deflate_init(struct comp_ctx **comp_ctx, int level) |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 551 | { |
William Lallemand | 8b52bb3 | 2012-11-16 18:06:41 +0100 | [diff] [blame] | 552 | z_stream *strm; |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 553 | |
William Lallemand | 8b52bb3 | 2012-11-16 18:06:41 +0100 | [diff] [blame] | 554 | if (init_comp_ctx(comp_ctx) < 0) |
| 555 | return -1; |
| 556 | |
| 557 | strm = &(*comp_ctx)->strm; |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 558 | |
Willy Tarreau | 3687803 | 2016-12-22 19:46:17 +0100 | [diff] [blame] | 559 | if (deflateInit2(strm, level, Z_DEFLATED, global_tune_zlibwindowsize, global_tune_zlibmemlevel, Z_DEFAULT_STRATEGY) != Z_OK) { |
William Lallemand | 8b52bb3 | 2012-11-16 18:06:41 +0100 | [diff] [blame] | 560 | deinit_comp_ctx(comp_ctx); |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 561 | return -1; |
William Lallemand | 8b52bb3 | 2012-11-16 18:06:41 +0100 | [diff] [blame] | 562 | } |
| 563 | |
| 564 | (*comp_ctx)->cur_lvl = level; |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 565 | |
| 566 | return 0; |
| 567 | } |
| 568 | |
William Lallemand | bf3ae61 | 2012-11-19 12:35:37 +0100 | [diff] [blame] | 569 | /* Return the size of consumed data or -1 */ |
Willy Tarreau | 9f640a1 | 2015-03-28 15:46:00 +0100 | [diff] [blame] | 570 | static int deflate_add_data(struct comp_ctx *comp_ctx, const char *in_data, int in_len, struct buffer *out) |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 571 | { |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 572 | int ret; |
William Lallemand | bf3ae61 | 2012-11-19 12:35:37 +0100 | [diff] [blame] | 573 | z_stream *strm = &comp_ctx->strm; |
| 574 | char *out_data = bi_end(out); |
| 575 | int out_len = out->size - buffer_len(out); |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 576 | |
| 577 | if (in_len <= 0) |
| 578 | return 0; |
| 579 | |
| 580 | |
| 581 | if (out_len <= 0) |
| 582 | return -1; |
| 583 | |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 584 | strm->next_in = (unsigned char *)in_data; |
| 585 | strm->avail_in = in_len; |
| 586 | strm->next_out = (unsigned char *)out_data; |
| 587 | strm->avail_out = out_len; |
| 588 | |
| 589 | ret = deflate(strm, Z_NO_FLUSH); |
| 590 | if (ret != Z_OK) |
| 591 | return -1; |
| 592 | |
| 593 | /* deflate update the available data out */ |
William Lallemand | bf3ae61 | 2012-11-19 12:35:37 +0100 | [diff] [blame] | 594 | out->i += out_len - strm->avail_out; |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 595 | |
William Lallemand | bf3ae61 | 2012-11-19 12:35:37 +0100 | [diff] [blame] | 596 | return in_len - strm->avail_in; |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 597 | } |
| 598 | |
Willy Tarreau | 9787efa | 2015-03-28 19:17:31 +0100 | [diff] [blame] | 599 | static int deflate_flush_or_finish(struct comp_ctx *comp_ctx, struct buffer *out, int flag) |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 600 | { |
| 601 | int ret; |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 602 | int out_len = 0; |
William Lallemand | 1c2d622 | 2012-10-30 15:52:53 +0100 | [diff] [blame] | 603 | z_stream *strm = &comp_ctx->strm; |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 604 | |
Willy Tarreau | d8b8b53 | 2016-08-08 16:41:01 +0200 | [diff] [blame] | 605 | strm->next_in = NULL; |
| 606 | strm->avail_in = 0; |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 607 | strm->next_out = (unsigned char *)bi_end(out); |
| 608 | strm->avail_out = out->size - buffer_len(out); |
| 609 | |
| 610 | ret = deflate(strm, flag); |
| 611 | if (ret != Z_OK && ret != Z_STREAM_END) |
| 612 | return -1; |
| 613 | |
| 614 | out_len = (out->size - buffer_len(out)) - strm->avail_out; |
| 615 | out->i += out_len; |
| 616 | |
William Lallemand | 072a2bf | 2012-11-20 17:01:01 +0100 | [diff] [blame] | 617 | /* compression limit */ |
| 618 | if ((global.comp_rate_lim > 0 && (read_freq_ctr(&global.comp_bps_out) > global.comp_rate_lim)) || /* rate */ |
| 619 | (idle_pct < compress_min_idle)) { /* idle */ |
| 620 | /* decrease level */ |
| 621 | if (comp_ctx->cur_lvl > 0) { |
| 622 | comp_ctx->cur_lvl--; |
William Lallemand | d85f917 | 2012-11-09 17:05:39 +0100 | [diff] [blame] | 623 | deflateParams(&comp_ctx->strm, comp_ctx->cur_lvl, Z_DEFAULT_STRATEGY); |
| 624 | } |
William Lallemand | 072a2bf | 2012-11-20 17:01:01 +0100 | [diff] [blame] | 625 | |
| 626 | } else if (comp_ctx->cur_lvl < global.tune.comp_maxlevel) { |
| 627 | /* increase level */ |
| 628 | comp_ctx->cur_lvl++ ; |
| 629 | deflateParams(&comp_ctx->strm, comp_ctx->cur_lvl, Z_DEFAULT_STRATEGY); |
William Lallemand | d85f917 | 2012-11-09 17:05:39 +0100 | [diff] [blame] | 630 | } |
| 631 | |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 632 | return out_len; |
| 633 | } |
| 634 | |
Willy Tarreau | 9787efa | 2015-03-28 19:17:31 +0100 | [diff] [blame] | 635 | static int deflate_flush(struct comp_ctx *comp_ctx, struct buffer *out) |
| 636 | { |
| 637 | return deflate_flush_or_finish(comp_ctx, out, Z_SYNC_FLUSH); |
| 638 | } |
| 639 | |
| 640 | static int deflate_finish(struct comp_ctx *comp_ctx, struct buffer *out) |
| 641 | { |
| 642 | return deflate_flush_or_finish(comp_ctx, out, Z_FINISH); |
| 643 | } |
| 644 | |
Willy Tarreau | 9f640a1 | 2015-03-28 15:46:00 +0100 | [diff] [blame] | 645 | static int deflate_end(struct comp_ctx **comp_ctx) |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 646 | { |
William Lallemand | 8b52bb3 | 2012-11-16 18:06:41 +0100 | [diff] [blame] | 647 | z_stream *strm = &(*comp_ctx)->strm; |
| 648 | int ret; |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 649 | |
William Lallemand | 8b52bb3 | 2012-11-16 18:06:41 +0100 | [diff] [blame] | 650 | ret = deflateEnd(strm); |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 651 | |
William Lallemand | 8b52bb3 | 2012-11-16 18:06:41 +0100 | [diff] [blame] | 652 | deinit_comp_ctx(comp_ctx); |
| 653 | |
| 654 | return ret; |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 655 | } |
| 656 | |
Willy Tarreau | 3687803 | 2016-12-22 19:46:17 +0100 | [diff] [blame] | 657 | /* config parser for global "tune.zlibmemlevel" */ |
| 658 | static int zlib_parse_global_memlevel(char **args, int section_type, struct proxy *curpx, |
| 659 | struct proxy *defpx, const char *file, int line, |
| 660 | char **err) |
| 661 | { |
| 662 | if (too_many_args(1, args, err, NULL)) |
| 663 | return -1; |
| 664 | |
| 665 | if (*(args[1]) == 0) { |
| 666 | memprintf(err, "'%s' expects a numeric value between 1 and 9.", args[0]); |
| 667 | return -1; |
| 668 | } |
| 669 | |
| 670 | global_tune_zlibmemlevel = atoi(args[1]); |
| 671 | if (global_tune_zlibmemlevel < 1 || global_tune_zlibmemlevel > 9) { |
| 672 | memprintf(err, "'%s' expects a numeric value between 1 and 9.", args[0]); |
| 673 | return -1; |
| 674 | } |
| 675 | return 0; |
| 676 | } |
| 677 | |
| 678 | |
| 679 | /* config parser for global "tune.zlibwindowsize" */ |
| 680 | static int zlib_parse_global_windowsize(char **args, int section_type, struct proxy *curpx, |
| 681 | struct proxy *defpx, const char *file, int line, |
| 682 | char **err) |
| 683 | { |
| 684 | if (too_many_args(1, args, err, NULL)) |
| 685 | return -1; |
| 686 | |
| 687 | if (*(args[1]) == 0) { |
| 688 | memprintf(err, "'%s' expects a numeric value between 8 and 15.", args[0]); |
| 689 | return -1; |
| 690 | } |
| 691 | |
| 692 | global_tune_zlibwindowsize = atoi(args[1]); |
| 693 | if (global_tune_zlibwindowsize < 8 || global_tune_zlibwindowsize > 15) { |
| 694 | memprintf(err, "'%s' expects a numeric value between 8 and 15.", args[0]); |
| 695 | return -1; |
| 696 | } |
| 697 | return 0; |
| 698 | } |
| 699 | |
William Lallemand | 82fe75c | 2012-10-23 10:25:10 +0200 | [diff] [blame] | 700 | #endif /* USE_ZLIB */ |
| 701 | |
Willy Tarreau | 3687803 | 2016-12-22 19:46:17 +0100 | [diff] [blame] | 702 | |
| 703 | /* config keyword parsers */ |
| 704 | static struct cfg_kw_list cfg_kws = {ILH, { |
| 705 | #ifdef USE_ZLIB |
| 706 | { CFG_GLOBAL, "tune.zlib.memlevel", zlib_parse_global_memlevel }, |
| 707 | { CFG_GLOBAL, "tune.zlib.windowsize", zlib_parse_global_windowsize }, |
| 708 | #endif |
| 709 | { 0, NULL, NULL } |
| 710 | }}; |
| 711 | |
William Lallemand | 727db8b | 2013-04-20 17:33:20 +0200 | [diff] [blame] | 712 | __attribute__((constructor)) |
| 713 | static void __comp_fetch_init(void) |
| 714 | { |
Willy Tarreau | b97c6fb | 2016-12-21 19:30:30 +0100 | [diff] [blame] | 715 | char *ptr = NULL; |
| 716 | int i; |
| 717 | |
Willy Tarreau | 418b8c0 | 2015-03-29 03:32:06 +0200 | [diff] [blame] | 718 | #ifdef USE_SLZ |
| 719 | slz_make_crc_table(); |
| 720 | slz_prepare_dist_table(); |
| 721 | #endif |
Willy Tarreau | 3687803 | 2016-12-22 19:46:17 +0100 | [diff] [blame] | 722 | #if defined(USE_ZLIB) && defined(DEFAULT_MAXZLIBMEM) |
| 723 | global.tune.maxzlibmem = DEFAULT_MAXZLIBMEM * 1024U * 1024U, |
| 724 | #endif |
Willy Tarreau | b97c6fb | 2016-12-21 19:30:30 +0100 | [diff] [blame] | 725 | #ifdef USE_ZLIB |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 726 | HA_SPIN_INIT(&comp_pool_lock); |
Willy Tarreau | b97c6fb | 2016-12-21 19:30:30 +0100 | [diff] [blame] | 727 | memprintf(&ptr, "Built with zlib version : " ZLIB_VERSION); |
| 728 | memprintf(&ptr, "%s\nRunning on zlib version : %s", ptr, zlibVersion()); |
| 729 | #elif defined(USE_SLZ) |
| 730 | memprintf(&ptr, "Built with libslz for stateless compression."); |
Lukas Tribus | b732321 | 2017-01-11 14:24:35 +0000 | [diff] [blame] | 731 | #else |
| 732 | memprintf(&ptr, "Built without compression support (neither USE_ZLIB nor USE_SLZ are set)."); |
Willy Tarreau | b97c6fb | 2016-12-21 19:30:30 +0100 | [diff] [blame] | 733 | #endif |
| 734 | memprintf(&ptr, "%s\nCompression algorithms supported :", ptr); |
| 735 | |
| 736 | for (i = 0; comp_algos[i].cfg_name; i++) |
| 737 | memprintf(&ptr, "%s%s %s(\"%s\")", ptr, (i == 0 ? "" : ","), comp_algos[i].cfg_name, comp_algos[i].ua_name); |
| 738 | |
| 739 | if (i == 0) |
| 740 | memprintf(&ptr, "%s none", ptr); |
| 741 | |
| 742 | hap_register_build_opts(ptr, 1); |
Willy Tarreau | 3687803 | 2016-12-22 19:46:17 +0100 | [diff] [blame] | 743 | cfg_register_keywords(&cfg_kws); |
William Lallemand | 727db8b | 2013-04-20 17:33:20 +0200 | [diff] [blame] | 744 | } |