diff options
Diffstat (limited to 'app/nginx/src/http/modules/ngx_http_random_index_module.c')
| -rw-r--r-- | app/nginx/src/http/modules/ngx_http_random_index_module.c | 317 |
1 files changed, 0 insertions, 317 deletions
diff --git a/app/nginx/src/http/modules/ngx_http_random_index_module.c b/app/nginx/src/http/modules/ngx_http_random_index_module.c deleted file mode 100644 index b47ee4f..0000000 --- a/app/nginx/src/http/modules/ngx_http_random_index_module.c +++ /dev/null @@ -1,317 +0,0 @@ - -/* - * Copyright (C) Igor Sysoev - * Copyright (C) Nginx, Inc. - */ - - -#include <ngx_config.h> -#include <ngx_core.h> -#include <ngx_http.h> - - -typedef struct { - ngx_flag_t enable; -} ngx_http_random_index_loc_conf_t; - - -#define NGX_HTTP_RANDOM_INDEX_PREALLOCATE 50 - - -static ngx_int_t ngx_http_random_index_error(ngx_http_request_t *r, - ngx_dir_t *dir, ngx_str_t *name); -static ngx_int_t ngx_http_random_index_init(ngx_conf_t *cf); -static void *ngx_http_random_index_create_loc_conf(ngx_conf_t *cf); -static char *ngx_http_random_index_merge_loc_conf(ngx_conf_t *cf, - void *parent, void *child); - - -static ngx_command_t ngx_http_random_index_commands[] = { - - { ngx_string("random_index"), - NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, - ngx_conf_set_flag_slot, - NGX_HTTP_LOC_CONF_OFFSET, - offsetof(ngx_http_random_index_loc_conf_t, enable), - NULL }, - - ngx_null_command -}; - - -static ngx_http_module_t ngx_http_random_index_module_ctx = { - NULL, /* preconfiguration */ - ngx_http_random_index_init, /* postconfiguration */ - - NULL, /* create main configuration */ - NULL, /* init main configuration */ - - NULL, /* create server configuration */ - NULL, /* merge server configuration */ - - ngx_http_random_index_create_loc_conf, /* create location configuration */ - ngx_http_random_index_merge_loc_conf /* merge location configuration */ -}; - - -ngx_module_t ngx_http_random_index_module = { - NGX_MODULE_V1, - &ngx_http_random_index_module_ctx, /* module context */ - ngx_http_random_index_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_int_t -ngx_http_random_index_handler(ngx_http_request_t *r) -{ - u_char *last, *filename; - size_t len, allocated, root; - ngx_err_t err; - ngx_int_t rc; - ngx_str_t path, uri, *name; - ngx_dir_t dir; - ngx_uint_t n, level; - ngx_array_t names; - ngx_http_random_index_loc_conf_t *rlcf; - - if (r->uri.data[r->uri.len - 1] != '/') { - return NGX_DECLINED; - } - - if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD|NGX_HTTP_POST))) { - return NGX_DECLINED; - } - - rlcf = ngx_http_get_module_loc_conf(r, ngx_http_random_index_module); - - if (!rlcf->enable) { - return NGX_DECLINED; - } - -#if (NGX_HAVE_D_TYPE) - len = NGX_DIR_MASK_LEN; -#else - len = NGX_HTTP_RANDOM_INDEX_PREALLOCATE; -#endif - - last = ngx_http_map_uri_to_path(r, &path, &root, len); - if (last == NULL) { - return NGX_HTTP_INTERNAL_SERVER_ERROR; - } - - allocated = path.len; - - path.len = last - path.data - 1; - path.data[path.len] = '\0'; - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, - "http random index: \"%s\"", path.data); - - if (ngx_open_dir(&path, &dir) == NGX_ERROR) { - err = ngx_errno; - - if (err == NGX_ENOENT - || err == NGX_ENOTDIR - || err == NGX_ENAMETOOLONG) - { - level = NGX_LOG_ERR; - rc = NGX_HTTP_NOT_FOUND; - - } else if (err == NGX_EACCES) { - level = NGX_LOG_ERR; - rc = NGX_HTTP_FORBIDDEN; - - } else { - level = NGX_LOG_CRIT; - rc = NGX_HTTP_INTERNAL_SERVER_ERROR; - } - - ngx_log_error(level, r->connection->log, err, - ngx_open_dir_n " \"%s\" failed", path.data); - - return rc; - } - - if (ngx_array_init(&names, r->pool, 32, sizeof(ngx_str_t)) != NGX_OK) { - return ngx_http_random_index_error(r, &dir, &path); - } - - filename = path.data; - filename[path.len] = '/'; - - for ( ;; ) { - ngx_set_errno(0); - - if (ngx_read_dir(&dir) == NGX_ERROR) { - err = ngx_errno; - - if (err != NGX_ENOMOREFILES) { - ngx_log_error(NGX_LOG_CRIT, r->connection->log, err, - ngx_read_dir_n " \"%V\" failed", &path); - return ngx_http_random_index_error(r, &dir, &path); - } - - break; - } - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, - "http random index file: \"%s\"", ngx_de_name(&dir)); - - if (ngx_de_name(&dir)[0] == '.') { - continue; - } - - len = ngx_de_namelen(&dir); - - if (dir.type == 0 || ngx_de_is_link(&dir)) { - - /* 1 byte for '/' and 1 byte for terminating '\0' */ - - if (path.len + 1 + len + 1 > allocated) { - allocated = path.len + 1 + len + 1 - + NGX_HTTP_RANDOM_INDEX_PREALLOCATE; - - filename = ngx_pnalloc(r->pool, allocated); - if (filename == NULL) { - return ngx_http_random_index_error(r, &dir, &path); - } - - last = ngx_cpystrn(filename, path.data, path.len + 1); - *last++ = '/'; - } - - ngx_cpystrn(last, ngx_de_name(&dir), len + 1); - - if (ngx_de_info(filename, &dir) == NGX_FILE_ERROR) { - err = ngx_errno; - - if (err != NGX_ENOENT) { - ngx_log_error(NGX_LOG_CRIT, r->connection->log, err, - ngx_de_info_n " \"%s\" failed", filename); - return ngx_http_random_index_error(r, &dir, &path); - } - - if (ngx_de_link_info(filename, &dir) == NGX_FILE_ERROR) { - ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno, - ngx_de_link_info_n " \"%s\" failed", - filename); - return ngx_http_random_index_error(r, &dir, &path); - } - } - } - - if (!ngx_de_is_file(&dir)) { - continue; - } - - name = ngx_array_push(&names); - if (name == NULL) { - return ngx_http_random_index_error(r, &dir, &path); - } - - name->len = len; - - name->data = ngx_pnalloc(r->pool, len); - if (name->data == NULL) { - return ngx_http_random_index_error(r, &dir, &path); - } - - ngx_memcpy(name->data, ngx_de_name(&dir), len); - } - - if (ngx_close_dir(&dir) == NGX_ERROR) { - ngx_log_error(NGX_LOG_ALERT, r->connection->log, ngx_errno, - ngx_close_dir_n " \"%V\" failed", &path); - } - - n = names.nelts; - - if (n == 0) { - return NGX_DECLINED; - } - - name = names.elts; - - n = (ngx_uint_t) (((uint64_t) ngx_random() * n) / 0x80000000); - - uri.len = r->uri.len + name[n].len; - - uri.data = ngx_pnalloc(r->pool, uri.len); - if (uri.data == NULL) { - return NGX_HTTP_INTERNAL_SERVER_ERROR; - } - - last = ngx_copy(uri.data, r->uri.data, r->uri.len); - ngx_memcpy(last, name[n].data, name[n].len); - - return ngx_http_internal_redirect(r, &uri, &r->args); -} - - -static ngx_int_t -ngx_http_random_index_error(ngx_http_request_t *r, ngx_dir_t *dir, - ngx_str_t *name) -{ - if (ngx_close_dir(dir) == NGX_ERROR) { - ngx_log_error(NGX_LOG_ALERT, r->connection->log, ngx_errno, - ngx_close_dir_n " \"%V\" failed", name); - } - - return NGX_HTTP_INTERNAL_SERVER_ERROR; -} - - -static void * -ngx_http_random_index_create_loc_conf(ngx_conf_t *cf) -{ - ngx_http_random_index_loc_conf_t *conf; - - conf = ngx_palloc(cf->pool, sizeof(ngx_http_random_index_loc_conf_t)); - if (conf == NULL) { - return NULL; - } - - conf->enable = NGX_CONF_UNSET; - - return conf; -} - - -static char * -ngx_http_random_index_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) -{ - ngx_http_random_index_loc_conf_t *prev = parent; - ngx_http_random_index_loc_conf_t *conf = child; - - ngx_conf_merge_value(conf->enable, prev->enable, 0); - - return NGX_CONF_OK; -} - - -static ngx_int_t -ngx_http_random_index_init(ngx_conf_t *cf) -{ - ngx_http_handler_pt *h; - ngx_http_core_main_conf_t *cmcf; - - cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module); - - h = ngx_array_push(&cmcf->phases[NGX_HTTP_CONTENT_PHASE].handlers); - if (h == NULL) { - return NGX_ERROR; - } - - *h = ngx_http_random_index_handler; - - return NGX_OK; -} |