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-rw-r--r--rubbos/app/httpd-2.0.64/modules/experimental/cache_storage.c311
1 files changed, 0 insertions, 311 deletions
diff --git a/rubbos/app/httpd-2.0.64/modules/experimental/cache_storage.c b/rubbos/app/httpd-2.0.64/modules/experimental/cache_storage.c
deleted file mode 100644
index 88f3d5dd..00000000
--- a/rubbos/app/httpd-2.0.64/modules/experimental/cache_storage.c
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@@ -1,311 +0,0 @@
-/* Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#define CORE_PRIVATE
-
-#include "mod_cache.h"
-
-extern APR_OPTIONAL_FN_TYPE(ap_cache_generate_key) *cache_generate_key;
-
-extern module AP_MODULE_DECLARE_DATA cache_module;
-
-/* -------------------------------------------------------------- */
-
-/*
- * delete all URL entities from the cache
- *
- */
-int cache_remove_url(request_rec *r, char *url)
-{
- cache_provider_list *list;
- apr_status_t rv;
- char *key;
- cache_request_rec *cache = (cache_request_rec *)
- ap_get_module_config(r->request_config, &cache_module);
-
- rv = cache_generate_key(r,r->pool,&key);
- if (rv != APR_SUCCESS) {
- return rv;
- }
-
- list = cache->providers;
-
- /* for each specified cache type, delete the URL */
- while(list) {
- list->provider->remove_url(key);
- list = list->next;
- }
- return OK;
-}
-
-
-/*
- * create a new URL entity in the cache
- *
- * It is possible to store more than once entity per URL. This
- * function will always create a new entity, regardless of whether
- * other entities already exist for the same URL.
- *
- * The size of the entity is provided so that a cache module can
- * decide whether or not it wants to cache this particular entity.
- * If the size is unknown, a size of -1 should be set.
- */
-int cache_create_entity(request_rec *r, char *url, apr_off_t size)
-{
- cache_provider_list *list;
- cache_handle_t *h = apr_pcalloc(r->pool, sizeof(cache_handle_t));
- char *key;
- apr_status_t rv;
- cache_request_rec *cache = (cache_request_rec *)
- ap_get_module_config(r->request_config, &cache_module);
-
- rv = cache_generate_key(r,r->pool,&key);
- if (rv != APR_SUCCESS) {
- return rv;
- }
-
- list = cache->providers;
- /* for each specified cache type, delete the URL */
- while (list) {
- switch (rv = list->provider->create_entity(h, r, key, size)) {
- case OK: {
- cache->handle = h;
- cache->provider = list->provider;
- cache->provider_name = list->provider_name;
- return OK;
- }
- case DECLINED: {
- list = list->next;
- continue;
- }
- default: {
- return rv;
- }
- }
- }
- return DECLINED;
-}
-
-static int set_cookie_doo_doo(void *v, const char *key, const char *val)
-{
- apr_table_addn(v, key, val);
- return 1;
-}
-
-static void accept_headers(cache_handle_t *h, request_rec *r)
-{
- apr_table_t *cookie_table;
- const char *v;
-
- v = apr_table_get(h->resp_hdrs, "Content-Type");
- if (v) {
- ap_set_content_type(r, v);
- apr_table_unset(h->resp_hdrs, "Content-Type");
- }
-
- /* If the cache gave us a Last-Modified header, we can't just
- * pass it on blindly because of restrictions on future values.
- */
- v = apr_table_get(h->resp_hdrs, "Last-Modified");
- if (v) {
- ap_update_mtime(r, apr_date_parse_http(v));
- ap_set_last_modified(r);
- apr_table_unset(h->resp_hdrs, "Last-Modified");
- }
-
- /* The HTTP specification says that it is legal to merge duplicate
- * headers into one. Some browsers that support Cookies don't like
- * merged headers and prefer that each Set-Cookie header is sent
- * separately. Lets humour those browsers by not merging.
- * Oh what a pain it is.
- */
- cookie_table = apr_table_make(r->pool, 2);
- apr_table_do(set_cookie_doo_doo, cookie_table, r->err_headers_out,
- "Set-Cookie", NULL);
- apr_table_do(set_cookie_doo_doo, cookie_table, h->resp_hdrs,
- "Set-Cookie", NULL);
- apr_table_unset(r->err_headers_out, "Set-Cookie");
- apr_table_unset(h->resp_hdrs, "Set-Cookie");
-
- apr_table_overlap(r->headers_out, h->resp_hdrs,
- APR_OVERLAP_TABLES_SET);
- apr_table_overlap(r->err_headers_out, h->resp_err_hdrs,
- APR_OVERLAP_TABLES_SET);
- if (!apr_is_empty_table(cookie_table)) {
- r->err_headers_out = apr_table_overlay(r->pool, r->err_headers_out,
- cookie_table);
- }
-}
-
-/*
- * select a specific URL entity in the cache
- *
- * It is possible to store more than one entity per URL. Content
- * negotiation is used to select an entity. Once an entity is
- * selected, details of it are stored in the per request
- * config to save time when serving the request later.
- *
- * This function returns OK if successful, DECLINED if no
- * cached entity fits the bill.
- */
-int cache_select_url(request_rec *r, char *url)
-{
- cache_provider_list *list;
- apr_status_t rv;
- cache_handle_t *h;
- char *key;
- cache_request_rec *cache = (cache_request_rec *)
- ap_get_module_config(r->request_config, &cache_module);
-
- rv = cache_generate_key(r, r->pool, &key);
- if (rv != APR_SUCCESS) {
- return rv;
- }
- /* go through the cache types till we get a match */
- h = apr_palloc(r->pool, sizeof(cache_handle_t));
-
- list = cache->providers;
-
- while (list) {
- switch ((rv = list->provider->open_entity(h, r, key))) {
- case OK: {
- char *vary = NULL;
- const char *varyhdr = NULL;
- int fresh;
-
- if (list->provider->recall_headers(h, r) != APR_SUCCESS) {
- /* TODO: Handle this error */
- return DECLINED;
- }
-
- /*
- * Check Content-Negotiation - Vary
- *
- * At this point we need to make sure that the object we found in
- * the cache is the same object that would be delivered to the
- * client, when the effects of content negotiation are taken into
- * effect.
- *
- * In plain english, we want to make sure that a language-negotiated
- * document in one language is not given to a client asking for a
- * language negotiated document in a different language by mistake.
- *
- * This code makes the assumption that the storage manager will
- * cache the req_hdrs if the response contains a Vary
- * header.
- *
- * RFC2616 13.6 and 14.44 describe the Vary mechanism.
- */
- if ((varyhdr = apr_table_get(h->resp_err_hdrs, "Vary")) == NULL) {
- varyhdr = apr_table_get(h->resp_hdrs, "Vary");
- }
- vary = apr_pstrdup(r->pool, varyhdr);
- while (vary && *vary) {
- char *name = vary;
- const char *h1, *h2;
-
- /* isolate header name */
- while (*vary && !apr_isspace(*vary) && (*vary != ','))
- ++vary;
- while (*vary && (apr_isspace(*vary) || (*vary == ','))) {
- *vary = '\0';
- ++vary;
- }
-
- /*
- * is this header in the request and the header in the cached
- * request identical? If not, we give up and do a straight get
- */
- h1 = apr_table_get(r->headers_in, name);
- h2 = apr_table_get(h->req_hdrs, name);
- if (h1 == h2) {
- /* both headers NULL, so a match - do nothing */
- }
- else if (h1 && h2 && !strcmp(h1, h2)) {
- /* both headers exist and are equal - do nothing */
- }
- else {
- /* headers do not match, so Vary failed */
- ap_log_error(APLOG_MARK, APLOG_DEBUG, APR_SUCCESS,
- r->server,
- "cache_select_url(): Vary header mismatch.");
- return DECLINED;
- }
- }
-
- cache->provider = list->provider;
- cache->provider_name = list->provider_name;
-
- /* Is our cached response fresh enough? */
- fresh = ap_cache_check_freshness(h, r);
- if (!fresh) {
- cache_info *info = &(h->cache_obj->info);
-
- /* Make response into a conditional */
- /* FIXME: What if the request is already conditional? */
- if (info && info->etag) {
- /* if we have a cached etag */
- cache->stale_headers = apr_table_copy(r->pool,
- r->headers_in);
- apr_table_set(r->headers_in, "If-None-Match", info->etag);
- cache->stale_handle = h;
- }
- else if (info && info->lastmods) {
- /* if we have a cached Last-Modified header */
- cache->stale_headers = apr_table_copy(r->pool,
- r->headers_in);
- apr_table_set(r->headers_in, "If-Modified-Since",
- info->lastmods);
- cache->stale_handle = h;
- }
-
- return DECLINED;
- }
-
- /* Okay, this response looks okay. Merge in our stuff and go. */
- apr_table_setn(r->headers_out, "Content-Type",
- ap_make_content_type(r, h->content_type));
- r->filename = apr_pstrdup(r->pool, h->cache_obj->info.filename);
- accept_headers(h, r);
-
- cache->handle = h;
- return OK;
- }
- case DECLINED: {
- /* try again with next cache type */
- list = list->next;
- continue;
- }
- default: {
- /* oo-er! an error */
- return rv;
- }
- }
- }
- return DECLINED;
-}
-
-apr_status_t cache_generate_key_default( request_rec *r, apr_pool_t*p, char**key )
-{
- if (r->hostname) {
- *key = apr_pstrcat(p, r->hostname, r->uri, "?", r->args, NULL);
- }
- else {
- *key = apr_pstrcat(p, r->uri, "?", r->args, NULL);
- }
- return APR_SUCCESS;
-}
-