diff options
Diffstat (limited to 'app/nginx/src/core/ngx_regex.c')
| -rw-r--r-- | app/nginx/src/core/ngx_regex.c | 435 |
1 files changed, 0 insertions, 435 deletions
diff --git a/app/nginx/src/core/ngx_regex.c b/app/nginx/src/core/ngx_regex.c deleted file mode 100644 index 9939dce..0000000 --- a/app/nginx/src/core/ngx_regex.c +++ /dev/null @@ -1,435 +0,0 @@ - -/* - * Copyright (C) Igor Sysoev - * Copyright (C) Nginx, Inc. - */ - - -#include <ngx_config.h> -#include <ngx_core.h> - - -typedef struct { - ngx_flag_t pcre_jit; -} ngx_regex_conf_t; - - -static void * ngx_libc_cdecl ngx_regex_malloc(size_t size); -static void ngx_libc_cdecl ngx_regex_free(void *p); -#if (NGX_HAVE_PCRE_JIT) -static void ngx_pcre_free_studies(void *data); -#endif - -static ngx_int_t ngx_regex_module_init(ngx_cycle_t *cycle); - -static void *ngx_regex_create_conf(ngx_cycle_t *cycle); -static char *ngx_regex_init_conf(ngx_cycle_t *cycle, void *conf); - -static char *ngx_regex_pcre_jit(ngx_conf_t *cf, void *post, void *data); -static ngx_conf_post_t ngx_regex_pcre_jit_post = { ngx_regex_pcre_jit }; - - -static ngx_command_t ngx_regex_commands[] = { - - { ngx_string("pcre_jit"), - NGX_MAIN_CONF|NGX_DIRECT_CONF|NGX_CONF_FLAG, - ngx_conf_set_flag_slot, - 0, - offsetof(ngx_regex_conf_t, pcre_jit), - &ngx_regex_pcre_jit_post }, - - ngx_null_command -}; - - -static ngx_core_module_t ngx_regex_module_ctx = { - ngx_string("regex"), - ngx_regex_create_conf, - ngx_regex_init_conf -}; - - -ngx_module_t ngx_regex_module = { - NGX_MODULE_V1, - &ngx_regex_module_ctx, /* module context */ - ngx_regex_commands, /* module directives */ - NGX_CORE_MODULE, /* module type */ - NULL, /* init master */ - ngx_regex_module_init, /* init module */ - NULL, /* init process */ - NULL, /* init thread */ - NULL, /* exit thread */ - NULL, /* exit process */ - NULL, /* exit master */ - NGX_MODULE_V1_PADDING -}; - - -static ngx_pool_t *ngx_pcre_pool; -static ngx_list_t *ngx_pcre_studies; - - -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) -{ - ngx_pcre_pool = pool; -} - - -static ngx_inline void -ngx_regex_malloc_done(void) -{ - ngx_pcre_pool = NULL; -} - - -ngx_int_t -ngx_regex_compile(ngx_regex_compile_t *rc) -{ - int n, erroff; - char *p; - pcre *re; - const char *errstr; - ngx_regex_elt_t *elt; - - 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 = ngx_pcalloc(rc->pool, sizeof(ngx_regex_t)); - if (rc->regex == NULL) { - goto nomem; - } - - rc->regex->code = re; - - /* do not study at runtime */ - - if (ngx_pcre_studies != NULL) { - elt = ngx_list_push(ngx_pcre_studies); - if (elt == NULL) { - goto nomem; - } - - elt->regex = rc->regex; - elt->name = rc->pattern.data; - } - - 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_ERROR; - -nomem: - - rc->err.len = ngx_snprintf(rc->err.data, rc->err.len, - "regex \"%V\" compilation failed: no memory", - &rc->pattern) - - rc->err.data; - return NGX_ERROR; -} - - -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; - pool = ngx_pcre_pool; - - if (pool) { - return ngx_palloc(pool, size); - } - - return NULL; -} - - -static void ngx_libc_cdecl -ngx_regex_free(void *p) -{ - return; -} - - -#if (NGX_HAVE_PCRE_JIT) - -static void -ngx_pcre_free_studies(void *data) -{ - ngx_list_t *studies = data; - - ngx_uint_t i; - ngx_list_part_t *part; - ngx_regex_elt_t *elts; - - part = &studies->part; - elts = part->elts; - - for (i = 0 ; /* void */ ; i++) { - - if (i >= part->nelts) { - if (part->next == NULL) { - break; - } - - part = part->next; - elts = part->elts; - i = 0; - } - - if (elts[i].regex->extra != NULL) { - pcre_free_study(elts[i].regex->extra); - } - } -} - -#endif - - -static ngx_int_t -ngx_regex_module_init(ngx_cycle_t *cycle) -{ - int opt; - const char *errstr; - ngx_uint_t i; - ngx_list_part_t *part; - ngx_regex_elt_t *elts; - - opt = 0; - -#if (NGX_HAVE_PCRE_JIT) - { - ngx_regex_conf_t *rcf; - ngx_pool_cleanup_t *cln; - - rcf = (ngx_regex_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_regex_module); - - if (rcf->pcre_jit) { - opt = PCRE_STUDY_JIT_COMPILE; - - /* - * The PCRE JIT compiler uses mmap for its executable codes, so we - * have to explicitly call the pcre_free_study() function to free - * this memory. - */ - - cln = ngx_pool_cleanup_add(cycle->pool, 0); - if (cln == NULL) { - return NGX_ERROR; - } - - cln->handler = ngx_pcre_free_studies; - cln->data = ngx_pcre_studies; - } - } -#endif - - ngx_regex_malloc_init(cycle->pool); - - part = &ngx_pcre_studies->part; - elts = part->elts; - - for (i = 0 ; /* void */ ; i++) { - - if (i >= part->nelts) { - if (part->next == NULL) { - break; - } - - part = part->next; - elts = part->elts; - i = 0; - } - - elts[i].regex->extra = pcre_study(elts[i].regex->code, opt, &errstr); - - if (errstr != NULL) { - ngx_log_error(NGX_LOG_ALERT, cycle->log, 0, - "pcre_study() failed: %s in \"%s\"", - errstr, elts[i].name); - } - -#if (NGX_HAVE_PCRE_JIT) - if (opt & PCRE_STUDY_JIT_COMPILE) { - int jit, n; - - jit = 0; - n = pcre_fullinfo(elts[i].regex->code, elts[i].regex->extra, - PCRE_INFO_JIT, &jit); - - if (n != 0 || jit != 1) { - ngx_log_error(NGX_LOG_INFO, cycle->log, 0, - "JIT compiler does not support pattern: \"%s\"", - elts[i].name); - } - } -#endif - } - - ngx_regex_malloc_done(); - - ngx_pcre_studies = NULL; - - return NGX_OK; -} - - -static void * -ngx_regex_create_conf(ngx_cycle_t *cycle) -{ - ngx_regex_conf_t *rcf; - - rcf = ngx_pcalloc(cycle->pool, sizeof(ngx_regex_conf_t)); - if (rcf == NULL) { - return NULL; - } - - rcf->pcre_jit = NGX_CONF_UNSET; - - ngx_pcre_studies = ngx_list_create(cycle->pool, 8, sizeof(ngx_regex_elt_t)); - if (ngx_pcre_studies == NULL) { - return NULL; - } - - return rcf; -} - - -static char * -ngx_regex_init_conf(ngx_cycle_t *cycle, void *conf) -{ - ngx_regex_conf_t *rcf = conf; - - ngx_conf_init_value(rcf->pcre_jit, 0); - - return NGX_CONF_OK; -} - - -static char * -ngx_regex_pcre_jit(ngx_conf_t *cf, void *post, void *data) -{ - ngx_flag_t *fp = data; - - if (*fp == 0) { - return NGX_CONF_OK; - } - -#if (NGX_HAVE_PCRE_JIT) - { - int jit, r; - - jit = 0; - r = pcre_config(PCRE_CONFIG_JIT, &jit); - - if (r != 0 || jit != 1) { - ngx_conf_log_error(NGX_LOG_WARN, cf, 0, - "PCRE library does not support JIT"); - *fp = 0; - } - } -#else - ngx_conf_log_error(NGX_LOG_WARN, cf, 0, - "nginx was built without PCRE JIT support"); - *fp = 0; -#endif - - return NGX_CONF_OK; -} |