modules/cache/mod_cache.c

759 static const char *cache_header_cmp(apr_pool_t *pool, apr_table_t *left,
764     if ((h1 = cache_table_getm(pool, left, key))
967     /* Parse the cache control header */
992              * valid Expires or Cache Control header. If we find a either of
999              * another header(s) that explicitly allow it. For example, these
1000              * include the following: an Expires header (section 14.21); a
1014         /* if a broken Expires header is present, don't cache it */
1015         reason = apr_pstrcat(p, "Broken expires header: ", exps, NULL);
1019         /* if a Expires header is in the past, don't cache it */
1020         reason = "Expires header already expired; not cacheable";
1083         reason = "Vary header contains '*'";
1101          * Note: a new response that has an older Date header value than
1112         apr_table_t *left = cache->stale_handle->resp_hdrs;
1118         if (((reason = cache_header_cmp(r->pool, left, right, "Allow")))
1119                 || ((reason = cache_header_cmp(r->pool, left, right,
1121                 || ((reason = cache_header_cmp(r->pool, left, right,
1123                 || ((reason = cache_header_cmp(r->pool, left, right,
1125                 || ((reason = cache_header_cmp(r->pool, left, right,
1127                 || ((reason = cache_header_cmp(r->pool, left, right,
1129                 || ((reason = cache_header_cmp(r->pool, left, right,
1131                 || ((reason = cache_header_cmp(r->pool, left, right,
1133                 || ((reason = cache_header_cmp(r->pool, left, right, "ETag")))
1134                 || ((reason = cache_header_cmp(r->pool, left, right,
1136             /* contradiction: 304 Not Modified, but entity header modified */
1337      * We now want to update the cache file header information with
1363         /* no date header (or bad header)! */
1453     /* Write away header information to cache. It is possible that we are
1585  * Therefore, if this filter is left in, it must mean we need to toss any
1733  * The status is optionally saved to an X-Cache header, and the detail of
1735  * saved to an X-Cache-Detail header. This extra detail is useful for
1974     cache_server_conf *ps = apr_pcalloc(p, sizeof(cache_server_conf));
1977     ps->cacheenable = apr_array_make(p, 10, sizeof(struct cache_enable));
1979     ps->cachedisable = apr_array_make(p, 10, sizeof(struct cache_disable));
1980     ps->ignorecachecontrol = 0;
1981     ps->ignorecachecontrol_set = 0;
1983     ps->ignore_headers = apr_array_make(p, 10, sizeof(char *));
1984     ps->ignore_headers_set = CACHE_IGNORE_HEADERS_UNSET;
1986     ps->ignorequerystring = 0;
1987     ps->ignorequerystring_set = 0;
1989     ps->quick = 1;
1990     ps->quick_set = 0;
1992     ps->ignore_session_id = apr_array_make(p, 10, sizeof(char *));
1993     ps->ignore_session_id_set = CACHE_IGNORE_SESSION_ID_UNSET;
1994     ps->lock = 0; /* thundering herd lock defaults to off */
1995     ps->lock_set = 0;
1998         ps->lockpath = apr_pstrcat(p, tmppath, DEFAULT_CACHE_LOCKPATH, NULL);
2000     ps->lockmaxage = apr_time_from_sec(DEFAULT_CACHE_MAXAGE);
2001     ps->x_cache = DEFAULT_X_CACHE;
2002     ps->x_cache_detail = DEFAULT_X_CACHE_DETAIL;
2003     return ps;
2008     cache_server_conf *ps = apr_pcalloc(p, sizeof(cache_server_conf));
2013     ps->cachedisable = apr_array_append(p,
2017     ps->cacheenable = apr_array_append(p,
2021     ps->ignorecachecontrol  =
2025     ps->ignore_headers =
2029     ps->ignorequerystring =
2033     ps->ignore_session_id =
2037     ps->lock =
2041     ps->lockpath =
2045     ps->lockmaxage =
2049     ps->quick =
2053     ps->x_cache =
2057     ps->x_cache_detail =
2061     ps->base_uri =
2065     return ps;
2138                                      const char *header)
2146     if (!strcasecmp(header, "None")) {
2147         /* if header None is listed clear array */
2153             /* Only add header if no "None" has been found in header list
2158             (*new) = (char *)header;
2557                  "Add a X-Cache header to responses. Default is off."),
2560                  "Add a X-Cache-Detail header to responses. Default is off."),