Mercurial > hg > nginx-vendor-1-0
view src/core/ngx_regex.c @ 546:e19e5f542878 NGINX_0_8_25
nginx 0.8.25
*) Change: now no message is written in an error log if a variable is
not found by $r->variable() method.
*) Feature: the ngx_http_degradation_module.
*) Feature: regular expression named captures.
*) Feature: now URI part is not required a "proxy_pass" directive if
variables are used.
*) Feature: now the "msie_padding" directive works for Chrome too.
*) Bugfix: a segmentation fault occurred in a worker process on low
memory condition; the bug had appeared in 0.8.18.
*) Bugfix: nginx sent gzipped responses to clients those do not support
gzip, if "gzip_static on" and "gzip_vary off"; the bug had appeared
in 0.8.16.
author | Igor Sysoev <http://sysoev.ru> |
---|---|
date | Mon, 16 Nov 2009 00:00:00 +0300 |
parents | 984bb0b1399b |
children | 697030d79811 |
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/* * Copyright (C) Igor Sysoev */ #include <ngx_config.h> #include <ngx_core.h> static void * ngx_libc_cdecl ngx_regex_malloc(size_t size); static void ngx_libc_cdecl ngx_regex_free(void *p); static ngx_pool_t *ngx_pcre_pool; void ngx_regex_init(void) { pcre_malloc = ngx_regex_malloc; pcre_free = ngx_regex_free; } static ngx_inline void ngx_regex_malloc_init(ngx_pool_t *pool) { #if (NGX_THREADS) ngx_core_tls_t *tls; if (ngx_threaded) { tls = ngx_thread_get_tls(ngx_core_tls_key); tls->pool = pool; return; } #else ngx_pcre_pool = pool; #endif } static ngx_inline void ngx_regex_malloc_done(void) { #if (NGX_THREADS) ngx_core_tls_t *tls; if (ngx_threaded) { tls = ngx_thread_get_tls(ngx_core_tls_key); tls->pool = NULL; return; } #else ngx_pcre_pool = NULL; #endif } ngx_int_t ngx_regex_compile(ngx_regex_compile_t *rc) { int n, erroff; char *p; const char *errstr; ngx_regex_t *re; ngx_regex_malloc_init(rc->pool); re = pcre_compile((const char *) rc->pattern.data, (int) rc->options, &errstr, &erroff, NULL); /* ensure that there is no current pool */ ngx_regex_malloc_done(); if (re == NULL) { if ((size_t) erroff == rc->pattern.len) { rc->err.len = ngx_snprintf(rc->err.data, rc->err.len, "pcre_compile() failed: %s in \"%V\"", errstr, &rc->pattern) - rc->err.data; } else { rc->err.len = ngx_snprintf(rc->err.data, rc->err.len, "pcre_compile() failed: %s in \"%V\" at \"%s\"", errstr, &rc->pattern, rc->pattern.data + erroff) - rc->err.data; } return NGX_ERROR; } rc->regex = re; n = pcre_fullinfo(re, NULL, PCRE_INFO_CAPTURECOUNT, &rc->captures); if (n < 0) { p = "pcre_fullinfo(\"%V\", PCRE_INFO_CAPTURECOUNT) failed: %d"; goto failed; } if (rc->captures == 0) { return NGX_OK; } n = pcre_fullinfo(re, NULL, PCRE_INFO_NAMECOUNT, &rc->named_captures); if (n < 0) { p = "pcre_fullinfo(\"%V\", PCRE_INFO_NAMECOUNT) failed: %d"; goto failed; } if (rc->named_captures == 0) { return NGX_OK; } n = pcre_fullinfo(re, NULL, PCRE_INFO_NAMEENTRYSIZE, &rc->name_size); if (n < 0) { p = "pcre_fullinfo(\"%V\", PCRE_INFO_NAMEENTRYSIZE) failed: %d"; goto failed; } n = pcre_fullinfo(re, NULL, PCRE_INFO_NAMETABLE, &rc->names); if (n < 0) { p = "pcre_fullinfo(\"%V\", PCRE_INFO_NAMETABLE) failed: %d"; goto failed; } return NGX_OK; failed: rc->err.len = ngx_snprintf(rc->err.data, rc->err.len, p, &rc->pattern, n) - rc->err.data; return NGX_OK; } ngx_int_t ngx_regex_capture_count(ngx_regex_t *re) { int rc, n; n = 0; rc = pcre_fullinfo(re, NULL, PCRE_INFO_CAPTURECOUNT, &n); if (rc < 0) { return (ngx_int_t) rc; } return (ngx_int_t) n; } ngx_int_t ngx_regex_exec_array(ngx_array_t *a, ngx_str_t *s, ngx_log_t *log) { ngx_int_t n; ngx_uint_t i; ngx_regex_elt_t *re; re = a->elts; for (i = 0; i < a->nelts; i++) { n = ngx_regex_exec(re[i].regex, s, NULL, 0); if (n == NGX_REGEX_NO_MATCHED) { continue; } if (n < 0) { ngx_log_error(NGX_LOG_ALERT, log, 0, ngx_regex_exec_n " failed: %i on \"%V\" using \"%s\"", n, s, re[i].name); return NGX_ERROR; } /* match */ return NGX_OK; } return NGX_DECLINED; } static void * ngx_libc_cdecl ngx_regex_malloc(size_t size) { ngx_pool_t *pool; #if (NGX_THREADS) ngx_core_tls_t *tls; if (ngx_threaded) { tls = ngx_thread_get_tls(ngx_core_tls_key); pool = tls->pool; } else { pool = ngx_pcre_pool; } #else pool = ngx_pcre_pool; #endif if (pool) { return ngx_palloc(pool, size); } return NULL; } static void ngx_libc_cdecl ngx_regex_free(void *p) { return; }