Mercurial > hg > nginx
annotate src/core/ngx_regex.c @ 4159:718f2154b813 stable-1.0
Merging r3933, r4154:
A new fix for the case when ssl_session_cache defined, but ssl is not
enabled in any server. The previous r1033 does not help when unused zone
becomes used after reconfiguration, so it is backed out.
The initial thought was to make SSL modules independed from SSL implementation
and to keep OpenSSL code dependance as much as in separate files.
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Fri, 30 Sep 2011 13:36:33 +0000 |
| parents | 169d84ff4064 |
| children | 7423800ef437 |
| rev | line source |
|---|---|
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
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4 */ |
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6 |
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7 #include <ngx_config.h> |
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8 #include <ngx_core.h> |
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9 |
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10 |
| 503 | 11 static void * ngx_libc_cdecl ngx_regex_malloc(size_t size); |
| 12 static void ngx_libc_cdecl ngx_regex_free(void *p); | |
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14 |
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15 static ngx_pool_t *ngx_pcre_pool; |
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16 |
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17 |
| 503 | 18 void |
| 19 ngx_regex_init(void) | |
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20 { |
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21 pcre_malloc = ngx_regex_malloc; |
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22 pcre_free = ngx_regex_free; |
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23 } |
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24 |
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25 |
| 3325 | 26 static ngx_inline void |
| 27 ngx_regex_malloc_init(ngx_pool_t *pool) | |
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28 { |
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29 #if (NGX_THREADS) |
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30 ngx_core_tls_t *tls; |
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31 |
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32 if (ngx_threaded) { |
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33 tls = ngx_thread_get_tls(ngx_core_tls_key); |
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34 tls->pool = pool; |
| 3325 | 35 return; |
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36 } |
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37 |
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38 #endif |
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39 |
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40 ngx_pcre_pool = pool; |
| 3325 | 41 } |
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42 |
| 3325 | 43 |
| 44 static ngx_inline void | |
| 45 ngx_regex_malloc_done(void) | |
| 46 { | |
| 47 #if (NGX_THREADS) | |
| 48 ngx_core_tls_t *tls; | |
| 49 | |
| 50 if (ngx_threaded) { | |
| 51 tls = ngx_thread_get_tls(ngx_core_tls_key); | |
| 52 tls->pool = NULL; | |
| 53 return; | |
| 54 } | |
| 55 | |
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56 #endif |
| 3325 | 57 |
| 58 ngx_pcre_pool = NULL; | |
| 59 } | |
| 60 | |
| 61 | |
| 62 ngx_int_t | |
| 63 ngx_regex_compile(ngx_regex_compile_t *rc) | |
| 64 { | |
| 65 int n, erroff; | |
| 66 char *p; | |
| 67 const char *errstr; | |
| 68 ngx_regex_t *re; | |
| 69 | |
| 70 ngx_regex_malloc_init(rc->pool); | |
| 71 | |
| 72 re = pcre_compile((const char *) rc->pattern.data, (int) rc->options, | |
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73 &errstr, &erroff, NULL); |
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74 |
| 3325 | 75 /* ensure that there is no current pool */ |
| 76 ngx_regex_malloc_done(); | |
| 77 | |
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78 if (re == NULL) { |
| 3325 | 79 if ((size_t) erroff == rc->pattern.len) { |
| 80 rc->err.len = ngx_snprintf(rc->err.data, rc->err.len, | |
| 81 "pcre_compile() failed: %s in \"%V\"", | |
| 82 errstr, &rc->pattern) | |
| 83 - rc->err.data; | |
| 84 | |
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85 } else { |
| 3325 | 86 rc->err.len = ngx_snprintf(rc->err.data, rc->err.len, |
| 87 "pcre_compile() failed: %s in \"%V\" at \"%s\"", | |
| 88 errstr, &rc->pattern, rc->pattern.data + erroff) | |
| 89 - rc->err.data; | |
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90 } |
| 3325 | 91 |
| 92 return NGX_ERROR; | |
| 93 } | |
| 94 | |
| 95 rc->regex = re; | |
| 96 | |
| 97 n = pcre_fullinfo(re, NULL, PCRE_INFO_CAPTURECOUNT, &rc->captures); | |
| 98 if (n < 0) { | |
| 99 p = "pcre_fullinfo(\"%V\", PCRE_INFO_CAPTURECOUNT) failed: %d"; | |
| 100 goto failed; | |
| 101 } | |
| 102 | |
| 103 if (rc->captures == 0) { | |
| 104 return NGX_OK; | |
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105 } |
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106 |
| 3325 | 107 n = pcre_fullinfo(re, NULL, PCRE_INFO_NAMECOUNT, &rc->named_captures); |
| 108 if (n < 0) { | |
| 109 p = "pcre_fullinfo(\"%V\", PCRE_INFO_NAMECOUNT) failed: %d"; | |
| 110 goto failed; | |
| 111 } | |
| 112 | |
| 113 if (rc->named_captures == 0) { | |
| 114 return NGX_OK; | |
| 115 } | |
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116 |
| 3325 | 117 n = pcre_fullinfo(re, NULL, PCRE_INFO_NAMEENTRYSIZE, &rc->name_size); |
| 118 if (n < 0) { | |
| 119 p = "pcre_fullinfo(\"%V\", PCRE_INFO_NAMEENTRYSIZE) failed: %d"; | |
| 120 goto failed; | |
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121 } |
| 3325 | 122 |
| 123 n = pcre_fullinfo(re, NULL, PCRE_INFO_NAMETABLE, &rc->names); | |
| 124 if (n < 0) { | |
| 125 p = "pcre_fullinfo(\"%V\", PCRE_INFO_NAMETABLE) failed: %d"; | |
| 126 goto failed; | |
| 127 } | |
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128 |
| 3325 | 129 return NGX_OK; |
| 130 | |
| 131 failed: | |
| 132 | |
| 133 rc->err.len = ngx_snprintf(rc->err.data, rc->err.len, p, &rc->pattern, n) | |
| 134 - rc->err.data; | |
| 135 return NGX_OK; | |
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136 } |
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137 |
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138 |
| 503 | 139 ngx_int_t |
| 140 ngx_regex_capture_count(ngx_regex_t *re) | |
| 481 | 141 { |
| 142 int rc, n; | |
| 143 | |
| 144 n = 0; | |
| 145 | |
| 146 rc = pcre_fullinfo(re, NULL, PCRE_INFO_CAPTURECOUNT, &n); | |
| 147 | |
| 501 | 148 if (rc < 0) { |
| 149 return (ngx_int_t) rc; | |
| 150 } | |
| 151 | |
| 152 return (ngx_int_t) n; | |
| 481 | 153 } |
| 154 | |
| 155 | |
| 503 | 156 ngx_int_t |
| 1784 | 157 ngx_regex_exec_array(ngx_array_t *a, ngx_str_t *s, ngx_log_t *log) |
| 158 { | |
| 159 ngx_int_t n; | |
| 160 ngx_uint_t i; | |
| 161 ngx_regex_elt_t *re; | |
| 162 | |
| 163 re = a->elts; | |
| 164 | |
| 165 for (i = 0; i < a->nelts; i++) { | |
| 166 | |
| 167 n = ngx_regex_exec(re[i].regex, s, NULL, 0); | |
| 168 | |
| 169 if (n == NGX_REGEX_NO_MATCHED) { | |
| 170 continue; | |
| 171 } | |
| 172 | |
| 173 if (n < 0) { | |
| 174 ngx_log_error(NGX_LOG_ALERT, log, 0, | |
| 3325 | 175 ngx_regex_exec_n " failed: %i on \"%V\" using \"%s\"", |
| 1784 | 176 n, s, re[i].name); |
| 177 return NGX_ERROR; | |
| 178 } | |
| 179 | |
| 180 /* match */ | |
| 181 | |
| 182 return NGX_OK; | |
| 183 } | |
| 184 | |
| 185 return NGX_DECLINED; | |
| 186 } | |
| 187 | |
| 188 | |
| 503 | 189 static void * ngx_libc_cdecl |
| 190 ngx_regex_malloc(size_t size) | |
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191 { |
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192 ngx_pool_t *pool; |
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193 #if (NGX_THREADS) |
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194 ngx_core_tls_t *tls; |
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195 |
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196 if (ngx_threaded) { |
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197 tls = ngx_thread_get_tls(ngx_core_tls_key); |
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198 pool = tls->pool; |
| 3325 | 199 |
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200 } else { |
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201 pool = ngx_pcre_pool; |
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202 } |
| 3325 | 203 |
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204 #else |
| 3325 | 205 |
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206 pool = ngx_pcre_pool; |
| 3325 | 207 |
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208 #endif |
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209 |
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210 if (pool) { |
| 2049 | 211 return ngx_palloc(pool, size); |
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212 } |
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213 |
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214 return NULL; |
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215 } |
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216 |
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217 |
| 503 | 218 static void ngx_libc_cdecl |
| 219 ngx_regex_free(void *p) | |
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220 { |
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221 return; |
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222 } |