From 6a5411729539fe21117f406699a69974b320eb7e Mon Sep 17 00:00:00 2001 From: Yu Ping Date: Thu, 19 Mar 2020 03:34:52 +0800 Subject: remove nginx build directory Signed-off-by: Yu Ping Change-Id: I73aba722f06f4cc4be484e3d5f4631225d09de83 --- nginx/src/http/ngx_http_file_cache.c | 2688 ---------------------------------- 1 file changed, 2688 deletions(-) delete mode 100644 nginx/src/http/ngx_http_file_cache.c (limited to 'nginx/src/http/ngx_http_file_cache.c') diff --git a/nginx/src/http/ngx_http_file_cache.c b/nginx/src/http/ngx_http_file_cache.c deleted file mode 100644 index 3b2b68a..0000000 --- a/nginx/src/http/ngx_http_file_cache.c +++ /dev/null @@ -1,2688 +0,0 @@ - -/* - * Copyright (C) Igor Sysoev - * Copyright (C) Nginx, Inc. - */ - - -#include -#include -#include -#include - - -static ngx_int_t ngx_http_file_cache_lock(ngx_http_request_t *r, - ngx_http_cache_t *c); -static void ngx_http_file_cache_lock_wait_handler(ngx_event_t *ev); -static void ngx_http_file_cache_lock_wait(ngx_http_request_t *r, - ngx_http_cache_t *c); -static ngx_int_t ngx_http_file_cache_read(ngx_http_request_t *r, - ngx_http_cache_t *c); -static ssize_t ngx_http_file_cache_aio_read(ngx_http_request_t *r, - ngx_http_cache_t *c); -#if (NGX_HAVE_FILE_AIO) -static void ngx_http_cache_aio_event_handler(ngx_event_t *ev); -#endif -#if (NGX_THREADS) -static ngx_int_t ngx_http_cache_thread_handler(ngx_thread_task_t *task, - ngx_file_t *file); -static void ngx_http_cache_thread_event_handler(ngx_event_t *ev); -#endif -static ngx_int_t ngx_http_file_cache_exists(ngx_http_file_cache_t *cache, - ngx_http_cache_t *c); -static ngx_int_t ngx_http_file_cache_name(ngx_http_request_t *r, - ngx_path_t *path); -static ngx_http_file_cache_node_t * - ngx_http_file_cache_lookup(ngx_http_file_cache_t *cache, u_char *key); -static void ngx_http_file_cache_rbtree_insert_value(ngx_rbtree_node_t *temp, - ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel); -static void ngx_http_file_cache_vary(ngx_http_request_t *r, u_char *vary, - size_t len, u_char *hash); -static void ngx_http_file_cache_vary_header(ngx_http_request_t *r, - ngx_md5_t *md5, ngx_str_t *name); -static ngx_int_t ngx_http_file_cache_reopen(ngx_http_request_t *r, - ngx_http_cache_t *c); -static ngx_int_t ngx_http_file_cache_update_variant(ngx_http_request_t *r, - ngx_http_cache_t *c); -static void ngx_http_file_cache_cleanup(void *data); -static time_t ngx_http_file_cache_forced_expire(ngx_http_file_cache_t *cache); -static time_t ngx_http_file_cache_expire(ngx_http_file_cache_t *cache); -static void ngx_http_file_cache_delete(ngx_http_file_cache_t *cache, - ngx_queue_t *q, u_char *name); -static void ngx_http_file_cache_loader_sleep(ngx_http_file_cache_t *cache); -static ngx_int_t ngx_http_file_cache_noop(ngx_tree_ctx_t *ctx, - ngx_str_t *path); -static ngx_int_t ngx_http_file_cache_manage_file(ngx_tree_ctx_t *ctx, - ngx_str_t *path); -static ngx_int_t ngx_http_file_cache_manage_directory(ngx_tree_ctx_t *ctx, - ngx_str_t *path); -static ngx_int_t ngx_http_file_cache_add_file(ngx_tree_ctx_t *ctx, - ngx_str_t *path); -static ngx_int_t ngx_http_file_cache_add(ngx_http_file_cache_t *cache, - ngx_http_cache_t *c); -static ngx_int_t ngx_http_file_cache_delete_file(ngx_tree_ctx_t *ctx, - ngx_str_t *path); -static void ngx_http_file_cache_set_watermark(ngx_http_file_cache_t *cache); - - -ngx_str_t ngx_http_cache_status[] = { - ngx_string("MISS"), - ngx_string("BYPASS"), - ngx_string("EXPIRED"), - ngx_string("STALE"), - ngx_string("UPDATING"), - ngx_string("REVALIDATED"), - ngx_string("HIT") -}; - - -static u_char ngx_http_file_cache_key[] = { LF, 'K', 'E', 'Y', ':', ' ' }; - - -static ngx_int_t -ngx_http_file_cache_init(ngx_shm_zone_t *shm_zone, void *data) -{ - ngx_http_file_cache_t *ocache = data; - - size_t len; - ngx_uint_t n; - ngx_http_file_cache_t *cache; - - cache = shm_zone->data; - - if (ocache) { - if (ngx_strcmp(cache->path->name.data, ocache->path->name.data) != 0) { - ngx_log_error(NGX_LOG_EMERG, shm_zone->shm.log, 0, - "cache \"%V\" uses the \"%V\" cache path " - "while previously it used the \"%V\" cache path", - &shm_zone->shm.name, &cache->path->name, - &ocache->path->name); - - return NGX_ERROR; - } - - for (n = 0; n < NGX_MAX_PATH_LEVEL; n++) { - if (cache->path->level[n] != ocache->path->level[n]) { - ngx_log_error(NGX_LOG_EMERG, shm_zone->shm.log, 0, - "cache \"%V\" had previously different levels", - &shm_zone->shm.name); - return NGX_ERROR; - } - } - - cache->sh = ocache->sh; - - cache->shpool = ocache->shpool; - cache->bsize = ocache->bsize; - - cache->max_size /= cache->bsize; - - if (!cache->sh->cold || cache->sh->loading) { - cache->path->loader = NULL; - } - - return NGX_OK; - } - - cache->shpool = (ngx_slab_pool_t *) shm_zone->shm.addr; - - if (shm_zone->shm.exists) { - cache->sh = cache->shpool->data; - cache->bsize = ngx_fs_bsize(cache->path->name.data); - cache->max_size /= cache->bsize; - - return NGX_OK; - } - - cache->sh = ngx_slab_alloc(cache->shpool, sizeof(ngx_http_file_cache_sh_t)); - if (cache->sh == NULL) { - return NGX_ERROR; - } - - cache->shpool->data = cache->sh; - - ngx_rbtree_init(&cache->sh->rbtree, &cache->sh->sentinel, - ngx_http_file_cache_rbtree_insert_value); - - ngx_queue_init(&cache->sh->queue); - - cache->sh->cold = 1; - cache->sh->loading = 0; - cache->sh->size = 0; - cache->sh->count = 0; - cache->sh->watermark = (ngx_uint_t) -1; - - cache->bsize = ngx_fs_bsize(cache->path->name.data); - - cache->max_size /= cache->bsize; - - len = sizeof(" in cache keys zone \"\"") + shm_zone->shm.name.len; - - cache->shpool->log_ctx = ngx_slab_alloc(cache->shpool, len); - if (cache->shpool->log_ctx == NULL) { - return NGX_ERROR; - } - - ngx_sprintf(cache->shpool->log_ctx, " in cache keys zone \"%V\"%Z", - &shm_zone->shm.name); - - cache->shpool->log_nomem = 0; - - return NGX_OK; -} - - -ngx_int_t -ngx_http_file_cache_new(ngx_http_request_t *r) -{ - ngx_http_cache_t *c; - - c = ngx_pcalloc(r->pool, sizeof(ngx_http_cache_t)); - if (c == NULL) { - return NGX_ERROR; - } - - if (ngx_array_init(&c->keys, r->pool, 4, sizeof(ngx_str_t)) != NGX_OK) { - return NGX_ERROR; - } - - r->cache = c; - c->file.log = r->connection->log; - c->file.fd = NGX_INVALID_FILE; - - return NGX_OK; -} - - -ngx_int_t -ngx_http_file_cache_create(ngx_http_request_t *r) -{ - ngx_http_cache_t *c; - ngx_pool_cleanup_t *cln; - ngx_http_file_cache_t *cache; - - c = r->cache; - cache = c->file_cache; - - cln = ngx_pool_cleanup_add(r->pool, 0); - if (cln == NULL) { - return NGX_ERROR; - } - - cln->handler = ngx_http_file_cache_cleanup; - cln->data = c; - - if (ngx_http_file_cache_exists(cache, c) == NGX_ERROR) { - return NGX_ERROR; - } - - if (ngx_http_file_cache_name(r, cache->path) != NGX_OK) { - return NGX_ERROR; - } - - return NGX_OK; -} - - -void -ngx_http_file_cache_create_key(ngx_http_request_t *r) -{ - size_t len; - ngx_str_t *key; - ngx_uint_t i; - ngx_md5_t md5; - ngx_http_cache_t *c; - - c = r->cache; - - len = 0; - - ngx_crc32_init(c->crc32); - ngx_md5_init(&md5); - - key = c->keys.elts; - for (i = 0; i < c->keys.nelts; i++) { - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, - "http cache key: \"%V\"", &key[i]); - - len += key[i].len; - - ngx_crc32_update(&c->crc32, key[i].data, key[i].len); - ngx_md5_update(&md5, key[i].data, key[i].len); - } - - c->header_start = sizeof(ngx_http_file_cache_header_t) - + sizeof(ngx_http_file_cache_key) + len + 1; - - ngx_crc32_final(c->crc32); - ngx_md5_final(c->key, &md5); - - ngx_memcpy(c->main, c->key, NGX_HTTP_CACHE_KEY_LEN); -} - - -ngx_int_t -ngx_http_file_cache_open(ngx_http_request_t *r) -{ - ngx_int_t rc, rv; - ngx_uint_t test; - ngx_http_cache_t *c; - ngx_pool_cleanup_t *cln; - ngx_open_file_info_t of; - ngx_http_file_cache_t *cache; - ngx_http_core_loc_conf_t *clcf; - - c = r->cache; - - if (c->waiting) { - return NGX_AGAIN; - } - - if (c->reading) { - return ngx_http_file_cache_read(r, c); - } - - cache = c->file_cache; - - if (c->node == NULL) { - cln = ngx_pool_cleanup_add(r->pool, 0); - if (cln == NULL) { - return NGX_ERROR; - } - - cln->handler = ngx_http_file_cache_cleanup; - cln->data = c; - } - - rc = ngx_http_file_cache_exists(cache, c); - - ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, - "http file cache exists: %i e:%d", rc, c->exists); - - if (rc == NGX_ERROR) { - return rc; - } - - if (rc == NGX_AGAIN) { - return NGX_HTTP_CACHE_SCARCE; - } - - if (rc == NGX_OK) { - - if (c->error) { - return c->error; - } - - c->temp_file = 1; - test = c->exists ? 1 : 0; - rv = NGX_DECLINED; - - } else { /* rc == NGX_DECLINED */ - - test = cache->sh->cold ? 1 : 0; - - if (c->min_uses > 1) { - - if (!test) { - return NGX_HTTP_CACHE_SCARCE; - } - - rv = NGX_HTTP_CACHE_SCARCE; - - } else { - c->temp_file = 1; - rv = NGX_DECLINED; - } - } - - if (ngx_http_file_cache_name(r, cache->path) != NGX_OK) { - return NGX_ERROR; - } - - if (!test) { - goto done; - } - - clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); - - ngx_memzero(&of, sizeof(ngx_open_file_info_t)); - - of.uniq = c->uniq; - of.valid = clcf->open_file_cache_valid; - of.min_uses = clcf->open_file_cache_min_uses; - of.events = clcf->open_file_cache_events; - of.directio = NGX_OPEN_FILE_DIRECTIO_OFF; - of.read_ahead = clcf->read_ahead; - - if (ngx_open_cached_file(clcf->open_file_cache, &c->file.name, &of, r->pool) - != NGX_OK) - { - switch (of.err) { - - case 0: - return NGX_ERROR; - - case NGX_ENOENT: - case NGX_ENOTDIR: - goto done; - - default: - ngx_log_error(NGX_LOG_CRIT, r->connection->log, of.err, - ngx_open_file_n " \"%s\" failed", c->file.name.data); - return NGX_ERROR; - } - } - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, - "http file cache fd: %d", of.fd); - - c->file.fd = of.fd; - c->file.log = r->connection->log; - c->uniq = of.uniq; - c->length = of.size; - c->fs_size = (of.fs_size + cache->bsize - 1) / cache->bsize; - - c->buf = ngx_create_temp_buf(r->pool, c->body_start); - if (c->buf == NULL) { - return NGX_ERROR; - } - - return ngx_http_file_cache_read(r, c); - -done: - - if (rv == NGX_DECLINED) { - return ngx_http_file_cache_lock(r, c); - } - - return rv; -} - - -static ngx_int_t -ngx_http_file_cache_lock(ngx_http_request_t *r, ngx_http_cache_t *c) -{ - ngx_msec_t now, timer; - ngx_http_file_cache_t *cache; - - if (!c->lock) { - return NGX_DECLINED; - } - - now = ngx_current_msec; - - cache = c->file_cache; - - ngx_shmtx_lock(&cache->shpool->mutex); - - timer = c->node->lock_time - now; - - if (!c->node->updating || (ngx_msec_int_t) timer <= 0) { - c->node->updating = 1; - c->node->lock_time = now + c->lock_age; - c->updating = 1; - c->lock_time = c->node->lock_time; - } - - ngx_shmtx_unlock(&cache->shpool->mutex); - - ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, - "http file cache lock u:%d wt:%M", - c->updating, c->wait_time); - - if (c->updating) { - return NGX_DECLINED; - } - - if (c->lock_timeout == 0) { - return NGX_HTTP_CACHE_SCARCE; - } - - c->waiting = 1; - - if (c->wait_time == 0) { - c->wait_time = now + c->lock_timeout; - - c->wait_event.handler = ngx_http_file_cache_lock_wait_handler; - c->wait_event.data = r; - c->wait_event.log = r->connection->log; - } - - timer = c->wait_time - now; - - ngx_add_timer(&c->wait_event, (timer > 500) ? 500 : timer); - - r->main->blocked++; - - return NGX_AGAIN; -} - - -static void -ngx_http_file_cache_lock_wait_handler(ngx_event_t *ev) -{ - ngx_connection_t *c; - ngx_http_request_t *r; - - r = ev->data; - c = r->connection; - - ngx_http_set_log_request(c->log, r); - - ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, - "http file cache wait: \"%V?%V\"", &r->uri, &r->args); - - ngx_http_file_cache_lock_wait(r, r->cache); - - ngx_http_run_posted_requests(c); -} - - -static void -ngx_http_file_cache_lock_wait(ngx_http_request_t *r, ngx_http_cache_t *c) -{ - ngx_uint_t wait; - ngx_msec_t now, timer; - ngx_http_file_cache_t *cache; - - now = ngx_current_msec; - - timer = c->wait_time - now; - - if ((ngx_msec_int_t) timer <= 0) { - ngx_log_error(NGX_LOG_INFO, r->connection->log, 0, - "cache lock timeout"); - c->lock_timeout = 0; - goto wakeup; - } - - cache = c->file_cache; - wait = 0; - - ngx_shmtx_lock(&cache->shpool->mutex); - - timer = c->node->lock_time - now; - - if (c->node->updating && (ngx_msec_int_t) timer > 0) { - wait = 1; - } - - ngx_shmtx_unlock(&cache->shpool->mutex); - - if (wait) { - ngx_add_timer(&c->wait_event, (timer > 500) ? 500 : timer); - return; - } - -wakeup: - - c->waiting = 0; - r->main->blocked--; - r->write_event_handler(r); -} - - -static ngx_int_t -ngx_http_file_cache_read(ngx_http_request_t *r, ngx_http_cache_t *c) -{ - u_char *p; - time_t now; - ssize_t n; - ngx_str_t *key; - ngx_int_t rc; - ngx_uint_t i; - ngx_http_file_cache_t *cache; - ngx_http_file_cache_header_t *h; - - n = ngx_http_file_cache_aio_read(r, c); - - if (n < 0) { - return n; - } - - if ((size_t) n < c->header_start) { - ngx_log_error(NGX_LOG_CRIT, r->connection->log, 0, - "cache file \"%s\" is too small", c->file.name.data); - return NGX_DECLINED; - } - - h = (ngx_http_file_cache_header_t *) c->buf->pos; - - if (h->version != NGX_HTTP_CACHE_VERSION) { - ngx_log_error(NGX_LOG_INFO, r->connection->log, 0, - "cache file \"%s\" version mismatch", c->file.name.data); - return NGX_DECLINED; - } - - if (h->crc32 != c->crc32 || (size_t) h->header_start != c->header_start) { - ngx_log_error(NGX_LOG_CRIT, r->connection->log, 0, - "cache file \"%s\" has md5 collision", c->file.name.data); - return NGX_DECLINED; - } - - p = c->buf->pos + sizeof(ngx_http_file_cache_header_t) - + sizeof(ngx_http_file_cache_key); - - key = c->keys.elts; - for (i = 0; i < c->keys.nelts; i++) { - if (ngx_memcmp(p, key[i].data, key[i].len) != 0) { - ngx_log_error(NGX_LOG_CRIT, r->connection->log, 0, - "cache file \"%s\" has md5 collision", - c->file.name.data); - return NGX_DECLINED; - } - - p += key[i].len; - } - - if ((size_t) h->body_start > c->body_start) { - ngx_log_error(NGX_LOG_CRIT, r->connection->log, 0, - "cache file \"%s\" has too long header", - c->file.name.data); - return NGX_DECLINED; - } - - if (h->vary_len > NGX_HTTP_CACHE_VARY_LEN) { - ngx_log_error(NGX_LOG_CRIT, r->connection->log, 0, - "cache file \"%s\" has incorrect vary length", - c->file.name.data); - return NGX_DECLINED; - } - - if (h->vary_len) { - ngx_http_file_cache_vary(r, h->vary, h->vary_len, c->variant); - - if (ngx_memcmp(c->variant, h->variant, NGX_HTTP_CACHE_KEY_LEN) != 0) { - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, - "http file cache vary mismatch"); - return ngx_http_file_cache_reopen(r, c); - } - } - - c->buf->last += n; - - c->valid_sec = h->valid_sec; - c->updating_sec = h->updating_sec; - c->error_sec = h->error_sec; - c->last_modified = h->last_modified; - c->date = h->date; - c->valid_msec = h->valid_msec; - c->body_start = h->body_start; - c->etag.len = h->etag_len; - c->etag.data = h->etag; - - r->cached = 1; - - cache = c->file_cache; - - if (cache->sh->cold) { - - ngx_shmtx_lock(&cache->shpool->mutex); - - if (!c->node->exists) { - c->node->uses = 1; - c->node->body_start = c->body_start; - c->node->exists = 1; - c->node->uniq = c->uniq; - c->node->fs_size = c->fs_size; - - cache->sh->size += c->fs_size; - } - - ngx_shmtx_unlock(&cache->shpool->mutex); - } - - now = ngx_time(); - - if (c->valid_sec < now) { - c->stale_updating = c->valid_sec + c->updating_sec >= now; - c->stale_error = c->valid_sec + c->error_sec >= now; - - ngx_shmtx_lock(&cache->shpool->mutex); - - if (c->node->updating) { - rc = NGX_HTTP_CACHE_UPDATING; - - } else { - c->node->updating = 1; - c->updating = 1; - c->lock_time = c->node->lock_time; - rc = NGX_HTTP_CACHE_STALE; - } - - ngx_shmtx_unlock(&cache->shpool->mutex); - - ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, - "http file cache expired: %i %T %T", - rc, c->valid_sec, now); - - return rc; - } - - return NGX_OK; -} - - -static ssize_t -ngx_http_file_cache_aio_read(ngx_http_request_t *r, ngx_http_cache_t *c) -{ -#if (NGX_HAVE_FILE_AIO || NGX_THREADS) - ssize_t n; - ngx_http_core_loc_conf_t *clcf; - - clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); -#endif - -#if (NGX_HAVE_FILE_AIO) - - if (clcf->aio == NGX_HTTP_AIO_ON && ngx_file_aio) { - n = ngx_file_aio_read(&c->file, c->buf->pos, c->body_start, 0, r->pool); - - if (n != NGX_AGAIN) { - c->reading = 0; - return n; - } - - c->reading = 1; - - c->file.aio->data = r; - c->file.aio->handler = ngx_http_cache_aio_event_handler; - - r->main->blocked++; - r->aio = 1; - - return NGX_AGAIN; - } - -#endif - -#if (NGX_THREADS) - - if (clcf->aio == NGX_HTTP_AIO_THREADS) { - c->file.thread_task = c->thread_task; - c->file.thread_handler = ngx_http_cache_thread_handler; - c->file.thread_ctx = r; - - n = ngx_thread_read(&c->file, c->buf->pos, c->body_start, 0, r->pool); - - c->thread_task = c->file.thread_task; - c->reading = (n == NGX_AGAIN); - - return n; - } - -#endif - - return ngx_read_file(&c->file, c->buf->pos, c->body_start, 0); -} - - -#if (NGX_HAVE_FILE_AIO) - -static void -ngx_http_cache_aio_event_handler(ngx_event_t *ev) -{ - ngx_event_aio_t *aio; - ngx_connection_t *c; - ngx_http_request_t *r; - - aio = ev->data; - r = aio->data; - c = r->connection; - - ngx_http_set_log_request(c->log, r); - - ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, - "http file cache aio: \"%V?%V\"", &r->uri, &r->args); - - r->main->blocked--; - r->aio = 0; - - r->write_event_handler(r); - - ngx_http_run_posted_requests(c); -} - -#endif - - -#if (NGX_THREADS) - -static ngx_int_t -ngx_http_cache_thread_handler(ngx_thread_task_t *task, ngx_file_t *file) -{ - ngx_str_t name; - ngx_thread_pool_t *tp; - ngx_http_request_t *r; - ngx_http_core_loc_conf_t *clcf; - - r = file->thread_ctx; - - clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); - tp = clcf->thread_pool; - - if (tp == NULL) { - if (ngx_http_complex_value(r, clcf->thread_pool_value, &name) - != NGX_OK) - { - return NGX_ERROR; - } - - tp = ngx_thread_pool_get((ngx_cycle_t *) ngx_cycle, &name); - - if (tp == NULL) { - ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, - "thread pool \"%V\" not found", &name); - return NGX_ERROR; - } - } - - task->event.data = r; - task->event.handler = ngx_http_cache_thread_event_handler; - - if (ngx_thread_task_post(tp, task) != NGX_OK) { - return NGX_ERROR; - } - - r->main->blocked++; - r->aio = 1; - - return NGX_OK; -} - - -static void -ngx_http_cache_thread_event_handler(ngx_event_t *ev) -{ - ngx_connection_t *c; - ngx_http_request_t *r; - - r = ev->data; - c = r->connection; - - ngx_http_set_log_request(c->log, r); - - ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, - "http file cache thread: \"%V?%V\"", &r->uri, &r->args); - - r->main->blocked--; - r->aio = 0; - - r->write_event_handler(r); - - ngx_http_run_posted_requests(c); -} - -#endif - - -static ngx_int_t -ngx_http_file_cache_exists(ngx_http_file_cache_t *cache, ngx_http_cache_t *c) -{ - ngx_int_t rc; - ngx_http_file_cache_node_t *fcn; - - ngx_shmtx_lock(&cache->shpool->mutex); - - fcn = c->node; - - if (fcn == NULL) { - fcn = ngx_http_file_cache_lookup(cache, c->key); - } - - if (fcn) { - ngx_queue_remove(&fcn->queue); - - if (c->node == NULL) { - fcn->uses++; - fcn->count++; - } - - if (fcn->error) { - - if (fcn->valid_sec < ngx_time()) { - goto renew; - } - - rc = NGX_OK; - - goto done; - } - - if (fcn->exists || fcn->uses >= c->min_uses) { - - c->exists = fcn->exists; - if (fcn->body_start) { - c->body_start = fcn->body_start; - } - - rc = NGX_OK; - - goto done; - } - - rc = NGX_AGAIN; - - goto done; - } - - fcn = ngx_slab_calloc_locked(cache->shpool, - sizeof(ngx_http_file_cache_node_t)); - if (fcn == NULL) { - ngx_http_file_cache_set_watermark(cache); - - ngx_shmtx_unlock(&cache->shpool->mutex); - - (void) ngx_http_file_cache_forced_expire(cache); - - ngx_shmtx_lock(&cache->shpool->mutex); - - fcn = ngx_slab_calloc_locked(cache->shpool, - sizeof(ngx_http_file_cache_node_t)); - if (fcn == NULL) { - ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0, - "could not allocate node%s", cache->shpool->log_ctx); - rc = NGX_ERROR; - goto failed; - } - } - - cache->sh->count++; - - ngx_memcpy((u_char *) &fcn->node.key, c->key, sizeof(ngx_rbtree_key_t)); - - ngx_memcpy(fcn->key, &c->key[sizeof(ngx_rbtree_key_t)], - NGX_HTTP_CACHE_KEY_LEN - sizeof(ngx_rbtree_key_t)); - - ngx_rbtree_insert(&cache->sh->rbtree, &fcn->node); - - fcn->uses = 1; - fcn->count = 1; - -renew: - - rc = NGX_DECLINED; - - fcn->valid_msec = 0; - fcn->error = 0; - fcn->exists = 0; - fcn->valid_sec = 0; - fcn->uniq = 0; - fcn->body_start = 0; - fcn->fs_size = 0; - -done: - - fcn->expire = ngx_time() + cache->inactive; - - ngx_queue_insert_head(&cache->sh->queue, &fcn->queue); - - c->uniq = fcn->uniq; - c->error = fcn->error; - c->node = fcn; - -failed: - - ngx_shmtx_unlock(&cache->shpool->mutex); - - return rc; -} - - -static ngx_int_t -ngx_http_file_cache_name(ngx_http_request_t *r, ngx_path_t *path) -{ - u_char *p; - ngx_http_cache_t *c; - - c = r->cache; - - if (c->file.name.len) { - return NGX_OK; - } - - c->file.name.len = path->name.len + 1 + path->len - + 2 * NGX_HTTP_CACHE_KEY_LEN; - - c->file.name.data = ngx_pnalloc(r->pool, c->file.name.len + 1); - if (c->file.name.data == NULL) { - return NGX_ERROR; - } - - ngx_memcpy(c->file.name.data, path->name.data, path->name.len); - - p = c->file.name.data + path->name.len + 1 + path->len; - p = ngx_hex_dump(p, c->key, NGX_HTTP_CACHE_KEY_LEN); - *p = '\0'; - - ngx_create_hashed_filename(path, c->file.name.data, c->file.name.len); - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, - "cache file: \"%s\"", c->file.name.data); - - return NGX_OK; -} - - -static ngx_http_file_cache_node_t * -ngx_http_file_cache_lookup(ngx_http_file_cache_t *cache, u_char *key) -{ - ngx_int_t rc; - ngx_rbtree_key_t node_key; - ngx_rbtree_node_t *node, *sentinel; - ngx_http_file_cache_node_t *fcn; - - ngx_memcpy((u_char *) &node_key, key, sizeof(ngx_rbtree_key_t)); - - node = cache->sh->rbtree.root; - sentinel = cache->sh->rbtree.sentinel; - - while (node != sentinel) { - - if (node_key < node->key) { - node = node->left; - continue; - } - - if (node_key > node->key) { - node = node->right; - continue; - } - - /* node_key == node->key */ - - fcn = (ngx_http_file_cache_node_t *) node; - - rc = ngx_memcmp(&key[sizeof(ngx_rbtree_key_t)], fcn->key, - NGX_HTTP_CACHE_KEY_LEN - sizeof(ngx_rbtree_key_t)); - - if (rc == 0) { - return fcn; - } - - node = (rc < 0) ? node->left : node->right; - } - - /* not found */ - - return NULL; -} - - -static void -ngx_http_file_cache_rbtree_insert_value(ngx_rbtree_node_t *temp, - ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel) -{ - ngx_rbtree_node_t **p; - ngx_http_file_cache_node_t *cn, *cnt; - - for ( ;; ) { - - if (node->key < temp->key) { - - p = &temp->left; - - } else if (node->key > temp->key) { - - p = &temp->right; - - } else { /* node->key == temp->key */ - - cn = (ngx_http_file_cache_node_t *) node; - cnt = (ngx_http_file_cache_node_t *) temp; - - p = (ngx_memcmp(cn->key, cnt->key, - NGX_HTTP_CACHE_KEY_LEN - sizeof(ngx_rbtree_key_t)) - < 0) - ? &temp->left : &temp->right; - } - - if (*p == sentinel) { - break; - } - - temp = *p; - } - - *p = node; - node->parent = temp; - node->left = sentinel; - node->right = sentinel; - ngx_rbt_red(node); -} - - -static void -ngx_http_file_cache_vary(ngx_http_request_t *r, u_char *vary, size_t len, - u_char *hash) -{ - u_char *p, *last; - ngx_str_t name; - ngx_md5_t md5; - u_char buf[NGX_HTTP_CACHE_VARY_LEN]; - - ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, - "http file cache vary: \"%*s\"", len, vary); - - ngx_md5_init(&md5); - ngx_md5_update(&md5, r->cache->main, NGX_HTTP_CACHE_KEY_LEN); - - ngx_strlow(buf, vary, len); - - p = buf; - last = buf + len; - - while (p < last) { - - while (p < last && (*p == ' ' || *p == ',')) { p++; } - - name.data = p; - - while (p < last && *p != ',' && *p != ' ') { p++; } - - name.len = p - name.data; - - if (name.len == 0) { - break; - } - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, - "http file cache vary: %V", &name); - - ngx_md5_update(&md5, name.data, name.len); - ngx_md5_update(&md5, (u_char *) ":", sizeof(":") - 1); - - ngx_http_file_cache_vary_header(r, &md5, &name); - - ngx_md5_update(&md5, (u_char *) CRLF, sizeof(CRLF) - 1); - } - - ngx_md5_final(hash, &md5); -} - - -static void -ngx_http_file_cache_vary_header(ngx_http_request_t *r, ngx_md5_t *md5, - ngx_str_t *name) -{ - size_t len; - u_char *p, *start, *last; - ngx_uint_t i, multiple, normalize; - ngx_list_part_t *part; - ngx_table_elt_t *header; - - multiple = 0; - normalize = 0; - - if (name->len == sizeof("Accept-Charset") - 1 - && ngx_strncasecmp(name->data, (u_char *) "Accept-Charset", - sizeof("Accept-Charset") - 1) == 0) - { - normalize = 1; - - } else if (name->len == sizeof("Accept-Encoding") - 1 - && ngx_strncasecmp(name->data, (u_char *) "Accept-Encoding", - sizeof("Accept-Encoding") - 1) == 0) - { - normalize = 1; - - } else if (name->len == sizeof("Accept-Language") - 1 - && ngx_strncasecmp(name->data, (u_char *) "Accept-Language", - sizeof("Accept-Language") - 1) == 0) - { - normalize = 1; - } - - part = &r->headers_in.headers.part; - header = part->elts; - - for (i = 0; /* void */ ; i++) { - - if (i >= part->nelts) { - if (part->next == NULL) { - break; - } - - part = part->next; - header = part->elts; - i = 0; - } - - if (header[i].hash == 0) { - continue; - } - - if (header[i].key.len != name->len) { - continue; - } - - if (ngx_strncasecmp(header[i].key.data, name->data, name->len) != 0) { - continue; - } - - if (!normalize) { - - if (multiple) { - ngx_md5_update(md5, (u_char *) ",", sizeof(",") - 1); - } - - ngx_md5_update(md5, header[i].value.data, header[i].value.len); - - multiple = 1; - - continue; - } - - /* normalize spaces */ - - p = header[i].value.data; - last = p + header[i].value.len; - - while (p < last) { - - while (p < last && (*p == ' ' || *p == ',')) { p++; } - - start = p; - - while (p < last && *p != ',' && *p != ' ') { p++; } - - len = p - start; - - if (len == 0) { - break; - } - - if (multiple) { - ngx_md5_update(md5, (u_char *) ",", sizeof(",") - 1); - } - - ngx_md5_update(md5, start, len); - - multiple = 1; - } - } -} - - -static ngx_int_t -ngx_http_file_cache_reopen(ngx_http_request_t *r, ngx_http_cache_t *c) -{ - ngx_http_file_cache_t *cache; - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->file.log, 0, - "http file cache reopen"); - - if (c->secondary) { - ngx_log_error(NGX_LOG_CRIT, r->connection->log, 0, - "cache file \"%s\" has incorrect vary hash", - c->file.name.data); - return NGX_DECLINED; - } - - cache = c->file_cache; - - ngx_shmtx_lock(&cache->shpool->mutex); - - c->node->count--; - c->node = NULL; - - ngx_shmtx_unlock(&cache->shpool->mutex); - - c->secondary = 1; - c->file.name.len = 0; - c->body_start = c->buf->end - c->buf->start; - - ngx_memcpy(c->key, c->variant, NGX_HTTP_CACHE_KEY_LEN); - - return ngx_http_file_cache_open(r); -} - - -ngx_int_t -ngx_http_file_cache_set_header(ngx_http_request_t *r, u_char *buf) -{ - ngx_http_file_cache_header_t *h = (ngx_http_file_cache_header_t *) buf; - - u_char *p; - ngx_str_t *key; - ngx_uint_t i; - ngx_http_cache_t *c; - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, - "http file cache set header"); - - c = r->cache; - - ngx_memzero(h, sizeof(ngx_http_file_cache_header_t)); - - h->version = NGX_HTTP_CACHE_VERSION; - h->valid_sec = c->valid_sec; - h->updating_sec = c->updating_sec; - h->error_sec = c->error_sec; - h->last_modified = c->last_modified; - h->date = c->date; - h->crc32 = c->crc32; - h->valid_msec = (u_short) c->valid_msec; - h->header_start = (u_short) c->header_start; - h->body_start = (u_short) c->body_start; - - if (c->etag.len <= NGX_HTTP_CACHE_ETAG_LEN) { - h->etag_len = (u_char) c->etag.len; - ngx_memcpy(h->etag, c->etag.data, c->etag.len); - } - - if (c->vary.len) { - if (c->vary.len > NGX_HTTP_CACHE_VARY_LEN) { - /* should not happen */ - c->vary.len = NGX_HTTP_CACHE_VARY_LEN; - } - - h->vary_len = (u_char) c->vary.len; - ngx_memcpy(h->vary, c->vary.data, c->vary.len); - - ngx_http_file_cache_vary(r, c->vary.data, c->vary.len, c->variant); - ngx_memcpy(h->variant, c->variant, NGX_HTTP_CACHE_KEY_LEN); - } - - if (ngx_http_file_cache_update_variant(r, c) != NGX_OK) { - return NGX_ERROR; - } - - p = buf + sizeof(ngx_http_file_cache_header_t); - - p = ngx_cpymem(p, ngx_http_file_cache_key, sizeof(ngx_http_file_cache_key)); - - key = c->keys.elts; - for (i = 0; i < c->keys.nelts; i++) { - p = ngx_copy(p, key[i].data, key[i].len); - } - - *p = LF; - - return NGX_OK; -} - - -static ngx_int_t -ngx_http_file_cache_update_variant(ngx_http_request_t *r, ngx_http_cache_t *c) -{ - ngx_http_file_cache_t *cache; - - if (!c->secondary) { - return NGX_OK; - } - - if (c->vary.len - && ngx_memcmp(c->variant, c->key, NGX_HTTP_CACHE_KEY_LEN) == 0) - { - return NGX_OK; - } - - /* - * if the variant hash doesn't match one we used as a secondary - * cache key, switch back to the original key - */ - - cache = c->file_cache; - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, - "http file cache main key"); - - ngx_shmtx_lock(&cache->shpool->mutex); - - c->node->count--; - c->node->updating = 0; - c->node = NULL; - - ngx_shmtx_unlock(&cache->shpool->mutex); - - c->file.name.len = 0; - - ngx_memcpy(c->key, c->main, NGX_HTTP_CACHE_KEY_LEN); - - if (ngx_http_file_cache_exists(cache, c) == NGX_ERROR) { - return NGX_ERROR; - } - - if (ngx_http_file_cache_name(r, cache->path) != NGX_OK) { - return NGX_ERROR; - } - - return NGX_OK; -} - - -void -ngx_http_file_cache_update(ngx_http_request_t *r, ngx_temp_file_t *tf) -{ - off_t fs_size; - ngx_int_t rc; - ngx_file_uniq_t uniq; - ngx_file_info_t fi; - ngx_http_cache_t *c; - ngx_ext_rename_file_t ext; - ngx_http_file_cache_t *cache; - - c = r->cache; - - if (c->updated) { - return; - } - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, - "http file cache update"); - - cache = c->file_cache; - - c->updated = 1; - c->updating = 0; - - uniq = 0; - fs_size = 0; - - ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, - "http file cache rename: \"%s\" to \"%s\"", - tf->file.name.data, c->file.name.data); - - ext.access = NGX_FILE_OWNER_ACCESS; - ext.path_access = NGX_FILE_OWNER_ACCESS; - ext.time = -1; - ext.create_path = 1; - ext.delete_file = 1; - ext.log = r->connection->log; - - rc = ngx_ext_rename_file(&tf->file.name, &c->file.name, &ext); - - if (rc == NGX_OK) { - - if (ngx_fd_info(tf->file.fd, &fi) == NGX_FILE_ERROR) { - ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno, - ngx_fd_info_n " \"%s\" failed", tf->file.name.data); - - rc = NGX_ERROR; - - } else { - uniq = ngx_file_uniq(&fi); - fs_size = (ngx_file_fs_size(&fi) + cache->bsize - 1) / cache->bsize; - } - } - - ngx_shmtx_lock(&cache->shpool->mutex); - - c->node->count--; - c->node->error = 0; - c->node->uniq = uniq; - c->node->body_start = c->body_start; - - cache->sh->size += fs_size - c->node->fs_size; - c->node->fs_size = fs_size; - - if (rc == NGX_OK) { - c->node->exists = 1; - } - - c->node->updating = 0; - - ngx_shmtx_unlock(&cache->shpool->mutex); -} - - -void -ngx_http_file_cache_update_header(ngx_http_request_t *r) -{ - ssize_t n; - ngx_err_t err; - ngx_file_t file; - ngx_file_info_t fi; - ngx_http_cache_t *c; - ngx_http_file_cache_header_t h; - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, - "http file cache update header"); - - c = r->cache; - - ngx_memzero(&file, sizeof(ngx_file_t)); - - file.name = c->file.name; - file.log = r->connection->log; - file.fd = ngx_open_file(file.name.data, NGX_FILE_RDWR, NGX_FILE_OPEN, 0); - - if (file.fd == NGX_INVALID_FILE) { - err = ngx_errno; - - /* cache file may have been deleted */ - - if (err == NGX_ENOENT) { - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, - "http file cache \"%s\" not found", - file.name.data); - return; - } - - ngx_log_error(NGX_LOG_CRIT, r->connection->log, err, - ngx_open_file_n " \"%s\" failed", file.name.data); - return; - } - - /* - * make sure cache file wasn't replaced; - * if it was, do nothing - */ - - if (ngx_fd_info(file.fd, &fi) == NGX_FILE_ERROR) { - ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno, - ngx_fd_info_n " \"%s\" failed", file.name.data); - goto done; - } - - if (c->uniq != ngx_file_uniq(&fi) - || c->length != ngx_file_size(&fi)) - { - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, - "http file cache \"%s\" changed", - file.name.data); - goto done; - } - - n = ngx_read_file(&file, (u_char *) &h, - sizeof(ngx_http_file_cache_header_t), 0); - - if (n == NGX_ERROR) { - goto done; - } - - if ((size_t) n != sizeof(ngx_http_file_cache_header_t)) { - ngx_log_error(NGX_LOG_CRIT, r->connection->log, 0, - ngx_read_file_n " read only %z of %z from \"%s\"", - n, sizeof(ngx_http_file_cache_header_t), file.name.data); - goto done; - } - - if (h.version != NGX_HTTP_CACHE_VERSION - || h.last_modified != c->last_modified - || h.crc32 != c->crc32 - || (size_t) h.header_start != c->header_start - || (size_t) h.body_start != c->body_start) - { - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, - "http file cache \"%s\" content changed", - file.name.data); - goto done; - } - - /* - * update cache file header with new data, - * notably h.valid_sec and h.date - */ - - ngx_memzero(&h, sizeof(ngx_http_file_cache_header_t)); - - h.version = NGX_HTTP_CACHE_VERSION; - h.valid_sec = c->valid_sec; - h.updating_sec = c->updating_sec; - h.error_sec = c->error_sec; - h.last_modified = c->last_modified; - h.date = c->date; - h.crc32 = c->crc32; - h.valid_msec = (u_short) c->valid_msec; - h.header_start = (u_short) c->header_start; - h.body_start = (u_short) c->body_start; - - if (c->etag.len <= NGX_HTTP_CACHE_ETAG_LEN) { - h.etag_len = (u_char) c->etag.len; - ngx_memcpy(h.etag, c->etag.data, c->etag.len); - } - - if (c->vary.len) { - if (c->vary.len > NGX_HTTP_CACHE_VARY_LEN) { - /* should not happen */ - c->vary.len = NGX_HTTP_CACHE_VARY_LEN; - } - - h.vary_len = (u_char) c->vary.len; - ngx_memcpy(h.vary, c->vary.data, c->vary.len); - - ngx_http_file_cache_vary(r, c->vary.data, c->vary.len, c->variant); - ngx_memcpy(h.variant, c->variant, NGX_HTTP_CACHE_KEY_LEN); - } - - (void) ngx_write_file(&file, (u_char *) &h, - sizeof(ngx_http_file_cache_header_t), 0); - -done: - - if (ngx_close_file(file.fd) == NGX_FILE_ERROR) { - ngx_log_error(NGX_LOG_ALERT, r->connection->log, ngx_errno, - ngx_close_file_n " \"%s\" failed", file.name.data); - } -} - - -ngx_int_t -ngx_http_cache_send(ngx_http_request_t *r) -{ - ngx_int_t rc; - ngx_buf_t *b; - ngx_chain_t out; - ngx_http_cache_t *c; - - c = r->cache; - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, - "http file cache send: %s", c->file.name.data); - - if (r != r->main && c->length - c->body_start == 0) { - return ngx_http_send_header(r); - } - - /* we need to allocate all before the header would be sent */ - - b = ngx_calloc_buf(r->pool); - if (b == NULL) { - return NGX_HTTP_INTERNAL_SERVER_ERROR; - } - - b->file = ngx_pcalloc(r->pool, sizeof(ngx_file_t)); - if (b->file == NULL) { - return NGX_HTTP_INTERNAL_SERVER_ERROR; - } - - rc = ngx_http_send_header(r); - - if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) { - return rc; - } - - b->file_pos = c->body_start; - b->file_last = c->length; - - b->in_file = (c->length - c->body_start) ? 1: 0; - b->last_buf = (r == r->main) ? 1: 0; - b->last_in_chain = 1; - - b->file->fd = c->file.fd; - b->file->name = c->file.name; - b->file->log = r->connection->log; - - out.buf = b; - out.next = NULL; - - return ngx_http_output_filter(r, &out); -} - - -void -ngx_http_file_cache_free(ngx_http_cache_t *c, ngx_temp_file_t *tf) -{ - ngx_http_file_cache_t *cache; - ngx_http_file_cache_node_t *fcn; - - if (c->updated || c->node == NULL) { - return; - } - - cache = c->file_cache; - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->file.log, 0, - "http file cache free, fd: %d", c->file.fd); - - ngx_shmtx_lock(&cache->shpool->mutex); - - fcn = c->node; - fcn->count--; - - if (c->updating && fcn->lock_time == c->lock_time) { - fcn->updating = 0; - } - - if (c->error) { - fcn->error = c->error; - - if (c->valid_sec) { - fcn->valid_sec = c->valid_sec; - fcn->valid_msec = c->valid_msec; - } - - } else if (!fcn->exists && fcn->count == 0 && c->min_uses == 1) { - ngx_queue_remove(&fcn->queue); - ngx_rbtree_delete(&cache->sh->rbtree, &fcn->node); - ngx_slab_free_locked(cache->shpool, fcn); - cache->sh->count--; - c->node = NULL; - } - - ngx_shmtx_unlock(&cache->shpool->mutex); - - c->updated = 1; - c->updating = 0; - - if (c->temp_file) { - if (tf && tf->file.fd != NGX_INVALID_FILE) { - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->file.log, 0, - "http file cache incomplete: \"%s\"", - tf->file.name.data); - - if (ngx_delete_file(tf->file.name.data) == NGX_FILE_ERROR) { - ngx_log_error(NGX_LOG_CRIT, c->file.log, ngx_errno, - ngx_delete_file_n " \"%s\" failed", - tf->file.name.data); - } - } - } - - if (c->wait_event.timer_set) { - ngx_del_timer(&c->wait_event); - } -} - - -static void -ngx_http_file_cache_cleanup(void *data) -{ - ngx_http_cache_t *c = data; - - if (c->updated) { - return; - } - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->file.log, 0, - "http file cache cleanup"); - - if (c->updating && !c->background) { - ngx_log_error(NGX_LOG_ALERT, c->file.log, 0, - "stalled cache updating, error:%ui", c->error); - } - - ngx_http_file_cache_free(c, NULL); -} - - -static time_t -ngx_http_file_cache_forced_expire(ngx_http_file_cache_t *cache) -{ - u_char *name, *p; - size_t len; - time_t wait; - ngx_uint_t tries; - ngx_path_t *path; - ngx_queue_t *q, *sentinel; - ngx_http_file_cache_node_t *fcn; - u_char key[2 * NGX_HTTP_CACHE_KEY_LEN]; - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0, - "http file cache forced expire"); - - path = cache->path; - len = path->name.len + 1 + path->len + 2 * NGX_HTTP_CACHE_KEY_LEN; - - name = ngx_alloc(len + 1, ngx_cycle->log); - if (name == NULL) { - return 10; - } - - ngx_memcpy(name, path->name.data, path->name.len); - - wait = 10; - tries = 20; - sentinel = NULL; - - ngx_shmtx_lock(&cache->shpool->mutex); - - for ( ;; ) { - if (ngx_queue_empty(&cache->sh->queue)) { - break; - } - - q = ngx_queue_last(&cache->sh->queue); - - if (q == sentinel) { - break; - } - - fcn = ngx_queue_data(q, ngx_http_file_cache_node_t, queue); - - ngx_log_debug6(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0, - "http file cache forced expire: #%d %d %02xd%02xd%02xd%02xd", - fcn->count, fcn->exists, - fcn->key[0], fcn->key[1], fcn->key[2], fcn->key[3]); - - if (fcn->count == 0) { - ngx_http_file_cache_delete(cache, q, name); - wait = 0; - break; - } - - p = ngx_hex_dump(key, (u_char *) &fcn->node.key, - sizeof(ngx_rbtree_key_t)); - len = NGX_HTTP_CACHE_KEY_LEN - sizeof(ngx_rbtree_key_t); - (void) ngx_hex_dump(p, fcn->key, len); - - /* - * abnormally exited workers may leave locked cache entries, - * and although it may be safe to remove them completely, - * we prefer to just move them to the top of the inactive queue - */ - - ngx_queue_remove(q); - fcn->expire = ngx_time() + cache->inactive; - ngx_queue_insert_head(&cache->sh->queue, &fcn->queue); - - ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0, - "ignore long locked inactive cache entry %*s, count:%d", - (size_t) 2 * NGX_HTTP_CACHE_KEY_LEN, key, fcn->count); - - if (sentinel == NULL) { - sentinel = q; - } - - if (--tries) { - continue; - } - - wait = 1; - break; - } - - ngx_shmtx_unlock(&cache->shpool->mutex); - - ngx_free(name); - - return wait; -} - - -static time_t -ngx_http_file_cache_expire(ngx_http_file_cache_t *cache) -{ - u_char *name, *p; - size_t len; - time_t now, wait; - ngx_path_t *path; - ngx_msec_t elapsed; - ngx_queue_t *q; - ngx_http_file_cache_node_t *fcn; - u_char key[2 * NGX_HTTP_CACHE_KEY_LEN]; - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0, - "http file cache expire"); - - path = cache->path; - len = path->name.len + 1 + path->len + 2 * NGX_HTTP_CACHE_KEY_LEN; - - name = ngx_alloc(len + 1, ngx_cycle->log); - if (name == NULL) { - return 10; - } - - ngx_memcpy(name, path->name.data, path->name.len); - - now = ngx_time(); - - ngx_shmtx_lock(&cache->shpool->mutex); - - for ( ;; ) { - - if (ngx_quit || ngx_terminate) { - wait = 1; - break; - } - - if (ngx_queue_empty(&cache->sh->queue)) { - wait = 10; - break; - } - - q = ngx_queue_last(&cache->sh->queue); - - fcn = ngx_queue_data(q, ngx_http_file_cache_node_t, queue); - - wait = fcn->expire - now; - - if (wait > 0) { - wait = wait > 10 ? 10 : wait; - break; - } - - ngx_log_debug6(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0, - "http file cache expire: #%d %d %02xd%02xd%02xd%02xd", - fcn->count, fcn->exists, - fcn->key[0], fcn->key[1], fcn->key[2], fcn->key[3]); - - if (fcn->count == 0) { - ngx_http_file_cache_delete(cache, q, name); - goto next; - } - - if (fcn->deleting) { - wait = 1; - break; - } - - p = ngx_hex_dump(key, (u_char *) &fcn->node.key, - sizeof(ngx_rbtree_key_t)); - len = NGX_HTTP_CACHE_KEY_LEN - sizeof(ngx_rbtree_key_t); - (void) ngx_hex_dump(p, fcn->key, len); - - /* - * abnormally exited workers may leave locked cache entries, - * and although it may be safe to remove them completely, - * we prefer to just move them to the top of the inactive queue - */ - - ngx_queue_remove(q); - fcn->expire = ngx_time() + cache->inactive; - ngx_queue_insert_head(&cache->sh->queue, &fcn->queue); - - ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0, - "ignore long locked inactive cache entry %*s, count:%d", - (size_t) 2 * NGX_HTTP_CACHE_KEY_LEN, key, fcn->count); - -next: - - if (++cache->files >= cache->manager_files) { - wait = 0; - break; - } - - ngx_time_update(); - - elapsed = ngx_abs((ngx_msec_int_t) (ngx_current_msec - cache->last)); - - if (elapsed >= cache->manager_threshold) { - wait = 0; - break; - } - } - - ngx_shmtx_unlock(&cache->shpool->mutex); - - ngx_free(name); - - return wait; -} - - -static void -ngx_http_file_cache_delete(ngx_http_file_cache_t *cache, ngx_queue_t *q, - u_char *name) -{ - u_char *p; - size_t len; - ngx_path_t *path; - ngx_http_file_cache_node_t *fcn; - - fcn = ngx_queue_data(q, ngx_http_file_cache_node_t, queue); - - if (fcn->exists) { - cache->sh->size -= fcn->fs_size; - - path = cache->path; - p = name + path->name.len + 1 + path->len; - p = ngx_hex_dump(p, (u_char *) &fcn->node.key, - sizeof(ngx_rbtree_key_t)); - len = NGX_HTTP_CACHE_KEY_LEN - sizeof(ngx_rbtree_key_t); - p = ngx_hex_dump(p, fcn->key, len); - *p = '\0'; - - fcn->count++; - fcn->deleting = 1; - ngx_shmtx_unlock(&cache->shpool->mutex); - - len = path->name.len + 1 + path->len + 2 * NGX_HTTP_CACHE_KEY_LEN; - ngx_create_hashed_filename(path, name, len); - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0, - "http file cache expire: \"%s\"", name); - - if (ngx_delete_file(name) == NGX_FILE_ERROR) { - ngx_log_error(NGX_LOG_CRIT, ngx_cycle->log, ngx_errno, - ngx_delete_file_n " \"%s\" failed", name); - } - - ngx_shmtx_lock(&cache->shpool->mutex); - fcn->count--; - fcn->deleting = 0; - } - - if (fcn->count == 0) { - ngx_queue_remove(q); - ngx_rbtree_delete(&cache->sh->rbtree, &fcn->node); - ngx_slab_free_locked(cache->shpool, fcn); - cache->sh->count--; - } -} - - -static ngx_msec_t -ngx_http_file_cache_manager(void *data) -{ - ngx_http_file_cache_t *cache = data; - - off_t size; - time_t wait; - ngx_msec_t elapsed, next; - ngx_uint_t count, watermark; - - cache->last = ngx_current_msec; - cache->files = 0; - - next = (ngx_msec_t) ngx_http_file_cache_expire(cache) * 1000; - - if (next == 0) { - next = cache->manager_sleep; - goto done; - } - - for ( ;; ) { - ngx_shmtx_lock(&cache->shpool->mutex); - - size = cache->sh->size; - count = cache->sh->count; - watermark = cache->sh->watermark; - - ngx_shmtx_unlock(&cache->shpool->mutex); - - ngx_log_debug3(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0, - "http file cache size: %O c:%ui w:%i", - size, count, (ngx_int_t) watermark); - - if (size < cache->max_size && count < watermark) { - break; - } - - wait = ngx_http_file_cache_forced_expire(cache); - - if (wait > 0) { - next = (ngx_msec_t) wait * 1000; - break; - } - - if (ngx_quit || ngx_terminate) { - break; - } - - if (++cache->files >= cache->manager_files) { - next = cache->manager_sleep; - break; - } - - ngx_time_update(); - - elapsed = ngx_abs((ngx_msec_int_t) (ngx_current_msec - cache->last)); - - if (elapsed >= cache->manager_threshold) { - next = cache->manager_sleep; - break; - } - } - -done: - - elapsed = ngx_abs((ngx_msec_int_t) (ngx_current_msec - cache->last)); - - ngx_log_debug3(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0, - "http file cache manager: %ui e:%M n:%M", - cache->files, elapsed, next); - - return next; -} - - -static void -ngx_http_file_cache_loader(void *data) -{ - ngx_http_file_cache_t *cache = data; - - ngx_tree_ctx_t tree; - - if (!cache->sh->cold || cache->sh->loading) { - return; - } - - if (!ngx_atomic_cmp_set(&cache->sh->loading, 0, ngx_pid)) { - return; - } - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0, - "http file cache loader"); - - tree.init_handler = NULL; - tree.file_handler = ngx_http_file_cache_manage_file; - tree.pre_tree_handler = ngx_http_file_cache_manage_directory; - tree.post_tree_handler = ngx_http_file_cache_noop; - tree.spec_handler = ngx_http_file_cache_delete_file; - tree.data = cache; - tree.alloc = 0; - tree.log = ngx_cycle->log; - - cache->last = ngx_current_msec; - cache->files = 0; - - if (ngx_walk_tree(&tree, &cache->path->name) == NGX_ABORT) { - cache->sh->loading = 0; - return; - } - - cache->sh->cold = 0; - cache->sh->loading = 0; - - ngx_log_error(NGX_LOG_NOTICE, ngx_cycle->log, 0, - "http file cache: %V %.3fM, bsize: %uz", - &cache->path->name, - ((double) cache->sh->size * cache->bsize) / (1024 * 1024), - cache->bsize); -} - - -static ngx_int_t -ngx_http_file_cache_noop(ngx_tree_ctx_t *ctx, ngx_str_t *path) -{ - return NGX_OK; -} - - -static ngx_int_t -ngx_http_file_cache_manage_file(ngx_tree_ctx_t *ctx, ngx_str_t *path) -{ - ngx_msec_t elapsed; - ngx_http_file_cache_t *cache; - - cache = ctx->data; - - if (ngx_http_file_cache_add_file(ctx, path) != NGX_OK) { - (void) ngx_http_file_cache_delete_file(ctx, path); - } - - if (++cache->files >= cache->loader_files) { - ngx_http_file_cache_loader_sleep(cache); - - } else { - ngx_time_update(); - - elapsed = ngx_abs((ngx_msec_int_t) (ngx_current_msec - cache->last)); - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0, - "http file cache loader time elapsed: %M", elapsed); - - if (elapsed >= cache->loader_threshold) { - ngx_http_file_cache_loader_sleep(cache); - } - } - - return (ngx_quit || ngx_terminate) ? NGX_ABORT : NGX_OK; -} - - -static ngx_int_t -ngx_http_file_cache_manage_directory(ngx_tree_ctx_t *ctx, ngx_str_t *path) -{ - if (path->len >= 5 - && ngx_strncmp(path->data + path->len - 5, "/temp", 5) == 0) - { - return NGX_DECLINED; - } - - return NGX_OK; -} - - -static void -ngx_http_file_cache_loader_sleep(ngx_http_file_cache_t *cache) -{ - ngx_msleep(cache->loader_sleep); - - ngx_time_update(); - - cache->last = ngx_current_msec; - cache->files = 0; -} - - -static ngx_int_t -ngx_http_file_cache_add_file(ngx_tree_ctx_t *ctx, ngx_str_t *name) -{ - u_char *p; - ngx_int_t n; - ngx_uint_t i; - ngx_http_cache_t c; - ngx_http_file_cache_t *cache; - - if (name->len < 2 * NGX_HTTP_CACHE_KEY_LEN) { - return NGX_ERROR; - } - - /* - * Temporary files in cache have a suffix consisting of a dot - * followed by 10 digits. - */ - - if (name->len >= 2 * NGX_HTTP_CACHE_KEY_LEN + 1 + 10 - && name->data[name->len - 10 - 1] == '.') - { - return NGX_OK; - } - - if (ctx->size < (off_t) sizeof(ngx_http_file_cache_header_t)) { - ngx_log_error(NGX_LOG_CRIT, ctx->log, 0, - "cache file \"%s\" is too small", name->data); - return NGX_ERROR; - } - - ngx_memzero(&c, sizeof(ngx_http_cache_t)); - cache = ctx->data; - - c.length = ctx->size; - c.fs_size = (ctx->fs_size + cache->bsize - 1) / cache->bsize; - - p = &name->data[name->len - 2 * NGX_HTTP_CACHE_KEY_LEN]; - - for (i = 0; i < NGX_HTTP_CACHE_KEY_LEN; i++) { - n = ngx_hextoi(p, 2); - - if (n == NGX_ERROR) { - return NGX_ERROR; - } - - p += 2; - - c.key[i] = (u_char) n; - } - - return ngx_http_file_cache_add(cache, &c); -} - - -static ngx_int_t -ngx_http_file_cache_add(ngx_http_file_cache_t *cache, ngx_http_cache_t *c) -{ - ngx_http_file_cache_node_t *fcn; - - ngx_shmtx_lock(&cache->shpool->mutex); - - fcn = ngx_http_file_cache_lookup(cache, c->key); - - if (fcn == NULL) { - - fcn = ngx_slab_calloc_locked(cache->shpool, - sizeof(ngx_http_file_cache_node_t)); - if (fcn == NULL) { - ngx_http_file_cache_set_watermark(cache); - - if (cache->fail_time != ngx_time()) { - cache->fail_time = ngx_time(); - ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0, - "could not allocate node%s", cache->shpool->log_ctx); - } - - ngx_shmtx_unlock(&cache->shpool->mutex); - return NGX_ERROR; - } - - cache->sh->count++; - - ngx_memcpy((u_char *) &fcn->node.key, c->key, sizeof(ngx_rbtree_key_t)); - - ngx_memcpy(fcn->key, &c->key[sizeof(ngx_rbtree_key_t)], - NGX_HTTP_CACHE_KEY_LEN - sizeof(ngx_rbtree_key_t)); - - ngx_rbtree_insert(&cache->sh->rbtree, &fcn->node); - - fcn->uses = 1; - fcn->exists = 1; - fcn->fs_size = c->fs_size; - - cache->sh->size += c->fs_size; - - } else { - ngx_queue_remove(&fcn->queue); - } - - fcn->expire = ngx_time() + cache->inactive; - - ngx_queue_insert_head(&cache->sh->queue, &fcn->queue); - - ngx_shmtx_unlock(&cache->shpool->mutex); - - return NGX_OK; -} - - -static ngx_int_t -ngx_http_file_cache_delete_file(ngx_tree_ctx_t *ctx, ngx_str_t *path) -{ - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ctx->log, 0, - "http file cache delete: \"%s\"", path->data); - - if (ngx_delete_file(path->data) == NGX_FILE_ERROR) { - ngx_log_error(NGX_LOG_CRIT, ctx->log, ngx_errno, - ngx_delete_file_n " \"%s\" failed", path->data); - } - - return NGX_OK; -} - - -static void -ngx_http_file_cache_set_watermark(ngx_http_file_cache_t *cache) -{ - cache->sh->watermark = cache->sh->count - cache->sh->count / 8; - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0, - "http file cache watermark: %ui", cache->sh->watermark); -} - - -time_t -ngx_http_file_cache_valid(ngx_array_t *cache_valid, ngx_uint_t status) -{ - ngx_uint_t i; - ngx_http_cache_valid_t *valid; - - if (cache_valid == NULL) { - return 0; - } - - valid = cache_valid->elts; - for (i = 0; i < cache_valid->nelts; i++) { - - if (valid[i].status == 0) { - return valid[i].valid; - } - - if (valid[i].status == status) { - return valid[i].valid; - } - } - - return 0; -} - - -char * -ngx_http_file_cache_set_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) -{ - char *confp = conf; - - off_t max_size; - u_char *last, *p; - time_t inactive; - ssize_t size; - ngx_str_t s, name, *value; - ngx_int_t loader_files, manager_files; - ngx_msec_t loader_sleep, manager_sleep, loader_threshold, - manager_threshold; - ngx_uint_t i, n, use_temp_path; - ngx_array_t *caches; - ngx_http_file_cache_t *cache, **ce; - - cache = ngx_pcalloc(cf->pool, sizeof(ngx_http_file_cache_t)); - if (cache == NULL) { - return NGX_CONF_ERROR; - } - - cache->path = ngx_pcalloc(cf->pool, sizeof(ngx_path_t)); - if (cache->path == NULL) { - return NGX_CONF_ERROR; - } - - use_temp_path = 1; - - inactive = 600; - - loader_files = 100; - loader_sleep = 50; - loader_threshold = 200; - - manager_files = 100; - manager_sleep = 50; - manager_threshold = 200; - - name.len = 0; - size = 0; - max_size = NGX_MAX_OFF_T_VALUE; - - value = cf->args->elts; - - cache->path->name = value[1]; - - if (cache->path->name.data[cache->path->name.len - 1] == '/') { - cache->path->name.len--; - } - - if (ngx_conf_full_name(cf->cycle, &cache->path->name, 0) != NGX_OK) { - return NGX_CONF_ERROR; - } - - for (i = 2; i < cf->args->nelts; i++) { - - if (ngx_strncmp(value[i].data, "levels=", 7) == 0) { - - p = value[i].data + 7; - last = value[i].data + value[i].len; - - for (n = 0; n < NGX_MAX_PATH_LEVEL && p < last; n++) { - - if (*p > '0' && *p < '3') { - - cache->path->level[n] = *p++ - '0'; - cache->path->len += cache->path->level[n] + 1; - - if (p == last) { - break; - } - - if (*p++ == ':' && n < NGX_MAX_PATH_LEVEL - 1 && p < last) { - continue; - } - - goto invalid_levels; - } - - goto invalid_levels; - } - - if (cache->path->len < 10 + NGX_MAX_PATH_LEVEL) { - continue; - } - - invalid_levels: - - ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, - "invalid \"levels\" \"%V\"", &value[i]); - return NGX_CONF_ERROR; - } - - if (ngx_strncmp(value[i].data, "use_temp_path=", 14) == 0) { - - if (ngx_strcmp(&value[i].data[14], "on") == 0) { - use_temp_path = 1; - - } else if (ngx_strcmp(&value[i].data[14], "off") == 0) { - use_temp_path = 0; - - } else { - ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, - "invalid use_temp_path value \"%V\", " - "it must be \"on\" or \"off\"", - &value[i]); - return NGX_CONF_ERROR; - } - - continue; - } - - if (ngx_strncmp(value[i].data, "keys_zone=", 10) == 0) { - - name.data = value[i].data + 10; - - p = (u_char *) ngx_strchr(name.data, ':'); - - if (p) { - name.len = p - name.data; - - p++; - - s.len = value[i].data + value[i].len - p; - s.data = p; - - size = ngx_parse_size(&s); - if (size > 8191) { - continue; - } - } - - ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, - "invalid keys zone size \"%V\"", &value[i]); - return NGX_CONF_ERROR; - } - - if (ngx_strncmp(value[i].data, "inactive=", 9) == 0) { - - s.len = value[i].len - 9; - s.data = value[i].data + 9; - - inactive = ngx_parse_time(&s, 1); - if (inactive == (time_t) NGX_ERROR) { - ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, - "invalid inactive value \"%V\"", &value[i]); - return NGX_CONF_ERROR; - } - - continue; - } - - if (ngx_strncmp(value[i].data, "max_size=", 9) == 0) { - - s.len = value[i].len - 9; - s.data = value[i].data + 9; - - max_size = ngx_parse_offset(&s); - if (max_size < 0) { - ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, - "invalid max_size value \"%V\"", &value[i]); - return NGX_CONF_ERROR; - } - - continue; - } - - if (ngx_strncmp(value[i].data, "loader_files=", 13) == 0) { - - loader_files = ngx_atoi(value[i].data + 13, value[i].len - 13); - if (loader_files == NGX_ERROR) { - ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, - "invalid loader_files value \"%V\"", &value[i]); - return NGX_CONF_ERROR; - } - - continue; - } - - if (ngx_strncmp(value[i].data, "loader_sleep=", 13) == 0) { - - s.len = value[i].len - 13; - s.data = value[i].data + 13; - - loader_sleep = ngx_parse_time(&s, 0); - if (loader_sleep == (ngx_msec_t) NGX_ERROR) { - ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, - "invalid loader_sleep value \"%V\"", &value[i]); - return NGX_CONF_ERROR; - } - - continue; - } - - if (ngx_strncmp(value[i].data, "loader_threshold=", 17) == 0) { - - s.len = value[i].len - 17; - s.data = value[i].data + 17; - - loader_threshold = ngx_parse_time(&s, 0); - if (loader_threshold == (ngx_msec_t) NGX_ERROR) { - ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, - "invalid loader_threshold value \"%V\"", &value[i]); - return NGX_CONF_ERROR; - } - - continue; - } - - if (ngx_strncmp(value[i].data, "manager_files=", 14) == 0) { - - manager_files = ngx_atoi(value[i].data + 14, value[i].len - 14); - if (manager_files == NGX_ERROR) { - ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, - "invalid manager_files value \"%V\"", &value[i]); - return NGX_CONF_ERROR; - } - - continue; - } - - if (ngx_strncmp(value[i].data, "manager_sleep=", 14) == 0) { - - s.len = value[i].len - 14; - s.data = value[i].data + 14; - - manager_sleep = ngx_parse_time(&s, 0); - if (manager_sleep == (ngx_msec_t) NGX_ERROR) { - ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, - "invalid manager_sleep value \"%V\"", &value[i]); - return NGX_CONF_ERROR; - } - - continue; - } - - if (ngx_strncmp(value[i].data, "manager_threshold=", 18) == 0) { - - s.len = value[i].len - 18; - s.data = value[i].data + 18; - - manager_threshold = ngx_parse_time(&s, 0); - if (manager_threshold == (ngx_msec_t) NGX_ERROR) { - ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, - "invalid manager_threshold value \"%V\"", &value[i]); - return NGX_CONF_ERROR; - } - - continue; - } - - ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, - "invalid parameter \"%V\"", &value[i]); - return NGX_CONF_ERROR; - } - - if (name.len == 0 || size == 0) { - ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, - "\"%V\" must have \"keys_zone\" parameter", - &cmd->name); - return NGX_CONF_ERROR; - } - - cache->path->manager = ngx_http_file_cache_manager; - cache->path->loader = ngx_http_file_cache_loader; - cache->path->data = cache; - cache->path->conf_file = cf->conf_file->file.name.data; - cache->path->line = cf->conf_file->line; - cache->loader_files = loader_files; - cache->loader_sleep = loader_sleep; - cache->loader_threshold = loader_threshold; - cache->manager_files = manager_files; - cache->manager_sleep = manager_sleep; - cache->manager_threshold = manager_threshold; - - if (ngx_add_path(cf, &cache->path) != NGX_OK) { - return NGX_CONF_ERROR; - } - - cache->shm_zone = ngx_shared_memory_add(cf, &name, size, cmd->post); - if (cache->shm_zone == NULL) { - return NGX_CONF_ERROR; - } - - if (cache->shm_zone->data) { - ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, - "duplicate zone \"%V\"", &name); - return NGX_CONF_ERROR; - } - - - cache->shm_zone->init = ngx_http_file_cache_init; - cache->shm_zone->data = cache; - - cache->use_temp_path = use_temp_path; - - cache->inactive = inactive; - cache->max_size = max_size; - - caches = (ngx_array_t *) (confp + cmd->offset); - - ce = ngx_array_push(caches); - if (ce == NULL) { - return NGX_CONF_ERROR; - } - - *ce = cache; - - return NGX_CONF_OK; -} - - -char * -ngx_http_file_cache_valid_set_slot(ngx_conf_t *cf, ngx_command_t *cmd, - void *conf) -{ - char *p = conf; - - time_t valid; - ngx_str_t *value; - ngx_uint_t i, n, status; - ngx_array_t **a; - ngx_http_cache_valid_t *v; - static ngx_uint_t statuses[] = { 200, 301, 302 }; - - a = (ngx_array_t **) (p + cmd->offset); - - if (*a == NGX_CONF_UNSET_PTR) { - *a = ngx_array_create(cf->pool, 1, sizeof(ngx_http_cache_valid_t)); - if (*a == NULL) { - return NGX_CONF_ERROR; - } - } - - value = cf->args->elts; - n = cf->args->nelts - 1; - - valid = ngx_parse_time(&value[n], 1); - if (valid == (time_t) NGX_ERROR) { - ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, - "invalid time value \"%V\"", &value[n]); - return NGX_CONF_ERROR; - } - - if (n == 1) { - - for (i = 0; i < 3; i++) { - v = ngx_array_push(*a); - if (v == NULL) { - return NGX_CONF_ERROR; - } - - v->status = statuses[i]; - v->valid = valid; - } - - return NGX_CONF_OK; - } - - for (i = 1; i < n; i++) { - - if (ngx_strcmp(value[i].data, "any") == 0) { - - status = 0; - - } else { - - status = ngx_atoi(value[i].data, value[i].len); - if (status < 100) { - ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, - "invalid status \"%V\"", &value[i]); - return NGX_CONF_ERROR; - } - } - - v = ngx_array_push(*a); - if (v == NULL) { - return NGX_CONF_ERROR; - } - - v->status = status; - v->valid = valid; - } - - return NGX_CONF_OK; -} -- cgit 1.2.3-korg