diff options
Diffstat (limited to 'app/nginx/src/http/modules/ngx_http_browser_module.c')
| -rw-r--r-- | app/nginx/src/http/modules/ngx_http_browser_module.c | 715 |
1 files changed, 0 insertions, 715 deletions
diff --git a/app/nginx/src/http/modules/ngx_http_browser_module.c b/app/nginx/src/http/modules/ngx_http_browser_module.c deleted file mode 100644 index 80da0d8..0000000 --- a/app/nginx/src/http/modules/ngx_http_browser_module.c +++ /dev/null @@ -1,715 +0,0 @@ - -/* - * Copyright (C) Igor Sysoev - * Copyright (C) Nginx, Inc. - */ - - -#include <ngx_config.h> -#include <ngx_core.h> -#include <ngx_http.h> - - -/* - * The module can check browser versions conforming to the following formats: - * X, X.X, X.X.X, and X.X.X.X. The maximum values of each format may be - * 4000, 4000.99, 4000.99.99, and 4000.99.99.99. - */ - - -#define NGX_HTTP_MODERN_BROWSER 0 -#define NGX_HTTP_ANCIENT_BROWSER 1 - - -typedef struct { - u_char browser[12]; - size_t skip; - size_t add; - u_char name[12]; -} ngx_http_modern_browser_mask_t; - - -typedef struct { - ngx_uint_t version; - size_t skip; - size_t add; - u_char name[12]; -} ngx_http_modern_browser_t; - - -typedef struct { - ngx_str_t name; - ngx_http_get_variable_pt handler; - uintptr_t data; -} ngx_http_browser_variable_t; - - -typedef struct { - ngx_array_t *modern_browsers; - ngx_array_t *ancient_browsers; - ngx_http_variable_value_t *modern_browser_value; - ngx_http_variable_value_t *ancient_browser_value; - - unsigned modern_unlisted_browsers:1; - unsigned netscape4:1; -} ngx_http_browser_conf_t; - - -static ngx_int_t ngx_http_msie_variable(ngx_http_request_t *r, - ngx_http_variable_value_t *v, uintptr_t data); -static ngx_int_t ngx_http_browser_variable(ngx_http_request_t *r, - ngx_http_variable_value_t *v, uintptr_t data); - -static ngx_uint_t ngx_http_browser(ngx_http_request_t *r, - ngx_http_browser_conf_t *cf); - -static ngx_int_t ngx_http_browser_add_variable(ngx_conf_t *cf); -static void *ngx_http_browser_create_conf(ngx_conf_t *cf); -static char *ngx_http_browser_merge_conf(ngx_conf_t *cf, void *parent, - void *child); -static int ngx_libc_cdecl ngx_http_modern_browser_sort(const void *one, - const void *two); -static char *ngx_http_modern_browser(ngx_conf_t *cf, ngx_command_t *cmd, - void *conf); -static char *ngx_http_ancient_browser(ngx_conf_t *cf, ngx_command_t *cmd, - void *conf); -static char *ngx_http_modern_browser_value(ngx_conf_t *cf, ngx_command_t *cmd, - void *conf); -static char *ngx_http_ancient_browser_value(ngx_conf_t *cf, ngx_command_t *cmd, - void *conf); - - -static ngx_command_t ngx_http_browser_commands[] = { - - { ngx_string("modern_browser"), - NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE12, - ngx_http_modern_browser, - NGX_HTTP_LOC_CONF_OFFSET, - 0, - NULL }, - - { ngx_string("ancient_browser"), - NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, - ngx_http_ancient_browser, - NGX_HTTP_LOC_CONF_OFFSET, - 0, - NULL }, - - { ngx_string("modern_browser_value"), - NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, - ngx_http_modern_browser_value, - NGX_HTTP_LOC_CONF_OFFSET, - 0, - NULL }, - - { ngx_string("ancient_browser_value"), - NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, - ngx_http_ancient_browser_value, - NGX_HTTP_LOC_CONF_OFFSET, - 0, - NULL }, - - ngx_null_command -}; - - -static ngx_http_module_t ngx_http_browser_module_ctx = { - ngx_http_browser_add_variable, /* preconfiguration */ - NULL, /* postconfiguration */ - - NULL, /* create main configuration */ - NULL, /* init main configuration */ - - NULL, /* create server configuration */ - NULL, /* merge server configuration */ - - ngx_http_browser_create_conf, /* create location configuration */ - ngx_http_browser_merge_conf /* merge location configuration */ -}; - - -ngx_module_t ngx_http_browser_module = { - NGX_MODULE_V1, - &ngx_http_browser_module_ctx, /* module context */ - ngx_http_browser_commands, /* module directives */ - NGX_HTTP_MODULE, /* module type */ - NULL, /* init master */ - NULL, /* init module */ - NULL, /* init process */ - NULL, /* init thread */ - NULL, /* exit thread */ - NULL, /* exit process */ - NULL, /* exit master */ - NGX_MODULE_V1_PADDING -}; - - -static ngx_http_modern_browser_mask_t ngx_http_modern_browser_masks[] = { - - /* Opera must be the first browser to check */ - - /* - * "Opera/7.50 (X11; FreeBSD i386; U) [en]" - * "Mozilla/5.0 (X11; FreeBSD i386; U) Opera 7.50 [en]" - * "Mozilla/4.0 (compatible; MSIE 6.0; X11; FreeBSD i386) Opera 7.50 [en]" - * "Opera/8.0 (Windows NT 5.1; U; ru)" - * "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; en) Opera 8.0" - * "Opera/9.01 (X11; FreeBSD 6 i386; U; en)" - */ - - { "opera", - 0, - sizeof("Opera ") - 1, - "Opera"}, - - /* "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)" */ - - { "msie", - sizeof("Mozilla/4.0 (compatible; ") - 1, - sizeof("MSIE ") - 1, - "MSIE "}, - - /* - * "Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.0.0) Gecko/20020610" - * "Mozilla/5.0 (Windows; U; Windows NT 5.1; ru-RU; rv:1.5) Gecko/20031006" - * "Mozilla/5.0 (Windows; U; Windows NT 5.1; ru-RU; rv:1.6) Gecko/20040206 - * Firefox/0.8" - * "Mozilla/5.0 (Windows; U; Windows NT 5.1; ru-RU; rv:1.7.8) - * Gecko/20050511 Firefox/1.0.4" - * "Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.8.0.5) Gecko/20060729 - * Firefox/1.5.0.5" - */ - - { "gecko", - sizeof("Mozilla/5.0 (") - 1, - sizeof("rv:") - 1, - "rv:"}, - - /* - * "Mozilla/5.0 (Macintosh; U; PPC Mac OS X; ru-ru) AppleWebKit/125.2 - * (KHTML, like Gecko) Safari/125.7" - * "Mozilla/5.0 (SymbianOS/9.1; U; en-us) AppleWebKit/413 - * (KHTML, like Gecko) Safari/413" - * "Mozilla/5.0 (Macintosh; U; PPC Mac OS X; en) AppleWebKit/418 - * (KHTML, like Gecko) Safari/417.9.3" - * "Mozilla/5.0 (Macintosh; U; PPC Mac OS X; ru-ru) AppleWebKit/418.8 - * (KHTML, like Gecko) Safari/419.3" - */ - - { "safari", - sizeof("Mozilla/5.0 (") - 1, - sizeof("Safari/") - 1, - "Safari/"}, - - /* - * "Mozilla/5.0 (compatible; Konqueror/3.1; Linux)" - * "Mozilla/5.0 (compatible; Konqueror/3.4; Linux) KHTML/3.4.2 (like Gecko)" - * "Mozilla/5.0 (compatible; Konqueror/3.5; FreeBSD) KHTML/3.5.1 - * (like Gecko)" - */ - - { "konqueror", - sizeof("Mozilla/5.0 (compatible; ") - 1, - sizeof("Konqueror/") - 1, - "Konqueror/"}, - - { "", 0, 0, "" } - -}; - - -static ngx_http_browser_variable_t ngx_http_browsers[] = { - { ngx_string("msie"), ngx_http_msie_variable, 0 }, - { ngx_string("modern_browser"), ngx_http_browser_variable, - NGX_HTTP_MODERN_BROWSER }, - { ngx_string("ancient_browser"), ngx_http_browser_variable, - NGX_HTTP_ANCIENT_BROWSER }, - { ngx_null_string, NULL, 0 } -}; - - -static ngx_int_t -ngx_http_browser_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v, - uintptr_t data) -{ - ngx_uint_t rc; - ngx_http_browser_conf_t *cf; - - cf = ngx_http_get_module_loc_conf(r, ngx_http_browser_module); - - rc = ngx_http_browser(r, cf); - - if (data == NGX_HTTP_MODERN_BROWSER && rc == NGX_HTTP_MODERN_BROWSER) { - *v = *cf->modern_browser_value; - return NGX_OK; - } - - if (data == NGX_HTTP_ANCIENT_BROWSER && rc == NGX_HTTP_ANCIENT_BROWSER) { - *v = *cf->ancient_browser_value; - return NGX_OK; - } - - *v = ngx_http_variable_null_value; - return NGX_OK; -} - - -static ngx_uint_t -ngx_http_browser(ngx_http_request_t *r, ngx_http_browser_conf_t *cf) -{ - size_t len; - u_char *name, *ua, *last, c; - ngx_str_t *ancient; - ngx_uint_t i, version, ver, scale; - ngx_http_modern_browser_t *modern; - - if (r->headers_in.user_agent == NULL) { - if (cf->modern_unlisted_browsers) { - return NGX_HTTP_MODERN_BROWSER; - } - - return NGX_HTTP_ANCIENT_BROWSER; - } - - ua = r->headers_in.user_agent->value.data; - len = r->headers_in.user_agent->value.len; - last = ua + len; - - if (cf->modern_browsers) { - modern = cf->modern_browsers->elts; - - for (i = 0; i < cf->modern_browsers->nelts; i++) { - name = ua + modern[i].skip; - - if (name >= last) { - continue; - } - - name = (u_char *) ngx_strstr(name, modern[i].name); - - if (name == NULL) { - continue; - } - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, - "browser: \"%s\"", name); - - name += modern[i].add; - - if (name >= last) { - continue; - } - - ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, - "version: \"%ui\" \"%s\"", modern[i].version, name); - - version = 0; - ver = 0; - scale = 1000000; - - while (name < last) { - - c = *name++; - - if (c >= '0' && c <= '9') { - ver = ver * 10 + (c - '0'); - continue; - } - - if (c == '.') { - version += ver * scale; - - ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, - "version: \"%ui\" \"%ui\"", - modern[i].version, version); - - if (version > modern[i].version) { - return NGX_HTTP_MODERN_BROWSER; - } - - ver = 0; - scale /= 100; - continue; - } - - break; - } - - version += ver * scale; - - ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, - "version: \"%ui\" \"%ui\"", - modern[i].version, version); - - if (version >= modern[i].version) { - return NGX_HTTP_MODERN_BROWSER; - } - - return NGX_HTTP_ANCIENT_BROWSER; - } - - if (!cf->modern_unlisted_browsers) { - return NGX_HTTP_ANCIENT_BROWSER; - } - } - - if (cf->netscape4) { - if (len > sizeof("Mozilla/4.72 ") - 1 - && ngx_strncmp(ua, "Mozilla/", sizeof("Mozilla/") - 1) == 0 - && ua[8] > '0' && ua[8] < '5') - { - return NGX_HTTP_ANCIENT_BROWSER; - } - } - - if (cf->ancient_browsers) { - ancient = cf->ancient_browsers->elts; - - for (i = 0; i < cf->ancient_browsers->nelts; i++) { - if (len >= ancient[i].len - && ngx_strstr(ua, ancient[i].data) != NULL) - { - return NGX_HTTP_ANCIENT_BROWSER; - } - } - } - - if (cf->modern_unlisted_browsers) { - return NGX_HTTP_MODERN_BROWSER; - } - - return NGX_HTTP_ANCIENT_BROWSER; -} - - -static ngx_int_t -ngx_http_msie_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v, - uintptr_t data) -{ - if (r->headers_in.msie) { - *v = ngx_http_variable_true_value; - return NGX_OK; - } - - *v = ngx_http_variable_null_value; - return NGX_OK; -} - - -static ngx_int_t -ngx_http_browser_add_variable(ngx_conf_t *cf) -{ - ngx_http_browser_variable_t *var; - ngx_http_variable_t *v; - - for (var = ngx_http_browsers; var->name.len; var++) { - - v = ngx_http_add_variable(cf, &var->name, NGX_HTTP_VAR_CHANGEABLE); - if (v == NULL) { - return NGX_ERROR; - } - - v->get_handler = var->handler; - v->data = var->data; - } - - return NGX_OK; -} - - -static void * -ngx_http_browser_create_conf(ngx_conf_t *cf) -{ - ngx_http_browser_conf_t *conf; - - conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_browser_conf_t)); - if (conf == NULL) { - return NULL; - } - - /* - * set by ngx_pcalloc(): - * - * conf->modern_browsers = NULL; - * conf->ancient_browsers = NULL; - * conf->modern_browser_value = NULL; - * conf->ancient_browser_value = NULL; - * - * conf->modern_unlisted_browsers = 0; - * conf->netscape4 = 0; - */ - - return conf; -} - - -static char * -ngx_http_browser_merge_conf(ngx_conf_t *cf, void *parent, void *child) -{ - ngx_http_browser_conf_t *prev = parent; - ngx_http_browser_conf_t *conf = child; - - ngx_uint_t i, n; - ngx_http_modern_browser_t *browsers, *opera; - - /* - * At the merge the skip field is used to store the browser slot, - * it will be used in sorting and then will overwritten - * with a real skip value. The zero value means Opera. - */ - - if (conf->modern_browsers == NULL && conf->modern_unlisted_browsers == 0) { - conf->modern_browsers = prev->modern_browsers; - conf->modern_unlisted_browsers = prev->modern_unlisted_browsers; - - } else if (conf->modern_browsers != NULL) { - browsers = conf->modern_browsers->elts; - - for (i = 0; i < conf->modern_browsers->nelts; i++) { - if (browsers[i].skip == 0) { - goto found; - } - } - - /* - * Opera may contain MSIE string, so if Opera was not enumerated - * as modern browsers, then add it and set a unreachable version - */ - - opera = ngx_array_push(conf->modern_browsers); - if (opera == NULL) { - return NGX_CONF_ERROR; - } - - opera->skip = 0; - opera->version = 4001000000U; - - browsers = conf->modern_browsers->elts; - -found: - - ngx_qsort(browsers, (size_t) conf->modern_browsers->nelts, - sizeof(ngx_http_modern_browser_t), - ngx_http_modern_browser_sort); - - for (i = 0; i < conf->modern_browsers->nelts; i++) { - n = browsers[i].skip; - - browsers[i].skip = ngx_http_modern_browser_masks[n].skip; - browsers[i].add = ngx_http_modern_browser_masks[n].add; - (void) ngx_cpystrn(browsers[i].name, - ngx_http_modern_browser_masks[n].name, 12); - } - } - - if (conf->ancient_browsers == NULL && conf->netscape4 == 0) { - conf->ancient_browsers = prev->ancient_browsers; - conf->netscape4 = prev->netscape4; - } - - if (conf->modern_browser_value == NULL) { - conf->modern_browser_value = prev->modern_browser_value; - } - - if (conf->modern_browser_value == NULL) { - conf->modern_browser_value = &ngx_http_variable_true_value; - } - - if (conf->ancient_browser_value == NULL) { - conf->ancient_browser_value = prev->ancient_browser_value; - } - - if (conf->ancient_browser_value == NULL) { - conf->ancient_browser_value = &ngx_http_variable_true_value; - } - - return NGX_CONF_OK; -} - - -static int ngx_libc_cdecl -ngx_http_modern_browser_sort(const void *one, const void *two) -{ - ngx_http_modern_browser_t *first = (ngx_http_modern_browser_t *) one; - ngx_http_modern_browser_t *second = (ngx_http_modern_browser_t *) two; - - return (first->skip - second->skip); -} - - -static char * -ngx_http_modern_browser(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) -{ - ngx_http_browser_conf_t *bcf = conf; - - u_char c; - ngx_str_t *value; - ngx_uint_t i, n, version, ver, scale; - ngx_http_modern_browser_t *browser; - ngx_http_modern_browser_mask_t *mask; - - value = cf->args->elts; - - if (cf->args->nelts == 2) { - if (ngx_strcmp(value[1].data, "unlisted") == 0) { - bcf->modern_unlisted_browsers = 1; - return NGX_CONF_OK; - } - - return NGX_CONF_ERROR; - } - - if (bcf->modern_browsers == NULL) { - bcf->modern_browsers = ngx_array_create(cf->pool, 5, - sizeof(ngx_http_modern_browser_t)); - if (bcf->modern_browsers == NULL) { - return NGX_CONF_ERROR; - } - } - - browser = ngx_array_push(bcf->modern_browsers); - if (browser == NULL) { - return NGX_CONF_ERROR; - } - - mask = ngx_http_modern_browser_masks; - - for (n = 0; mask[n].browser[0] != '\0'; n++) { - if (ngx_strcasecmp(mask[n].browser, value[1].data) == 0) { - goto found; - } - } - - ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, - "unknown browser name \"%V\"", &value[1]); - - return NGX_CONF_ERROR; - -found: - - /* - * at this stage the skip field is used to store the browser slot, - * it will be used in sorting in merge stage and then will overwritten - * with a real value - */ - - browser->skip = n; - - version = 0; - ver = 0; - scale = 1000000; - - for (i = 0; i < value[2].len; i++) { - - c = value[2].data[i]; - - if (c >= '0' && c <= '9') { - ver = ver * 10 + (c - '0'); - continue; - } - - if (c == '.') { - version += ver * scale; - ver = 0; - scale /= 100; - continue; - } - - ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, - "invalid browser version \"%V\"", &value[2]); - - return NGX_CONF_ERROR; - } - - version += ver * scale; - - browser->version = version; - - return NGX_CONF_OK; -} - - -static char * -ngx_http_ancient_browser(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) -{ - ngx_http_browser_conf_t *bcf = conf; - - ngx_str_t *value, *browser; - ngx_uint_t i; - - value = cf->args->elts; - - for (i = 1; i < cf->args->nelts; i++) { - if (ngx_strcmp(value[i].data, "netscape4") == 0) { - bcf->netscape4 = 1; - continue; - } - - if (bcf->ancient_browsers == NULL) { - bcf->ancient_browsers = ngx_array_create(cf->pool, 4, - sizeof(ngx_str_t)); - if (bcf->ancient_browsers == NULL) { - return NGX_CONF_ERROR; - } - } - - browser = ngx_array_push(bcf->ancient_browsers); - if (browser == NULL) { - return NGX_CONF_ERROR; - } - - *browser = value[i]; - } - - return NGX_CONF_OK; -} - - -static char * -ngx_http_modern_browser_value(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) -{ - ngx_http_browser_conf_t *bcf = conf; - - ngx_str_t *value; - - bcf->modern_browser_value = ngx_palloc(cf->pool, - sizeof(ngx_http_variable_value_t)); - if (bcf->modern_browser_value == NULL) { - return NGX_CONF_ERROR; - } - - value = cf->args->elts; - - bcf->modern_browser_value->len = value[1].len; - bcf->modern_browser_value->valid = 1; - bcf->modern_browser_value->no_cacheable = 0; - bcf->modern_browser_value->not_found = 0; - bcf->modern_browser_value->data = value[1].data; - - return NGX_CONF_OK; -} - - -static char * -ngx_http_ancient_browser_value(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) -{ - ngx_http_browser_conf_t *bcf = conf; - - ngx_str_t *value; - - bcf->ancient_browser_value = ngx_palloc(cf->pool, - sizeof(ngx_http_variable_value_t)); - if (bcf->ancient_browser_value == NULL) { - return NGX_CONF_ERROR; - } - - value = cf->args->elts; - - bcf->ancient_browser_value->len = value[1].len; - bcf->ancient_browser_value->valid = 1; - bcf->ancient_browser_value->no_cacheable = 0; - bcf->ancient_browser_value->not_found = 0; - bcf->ancient_browser_value->data = value[1].data; - - return NGX_CONF_OK; -} |