Apache: The Definitive Guide, 3rd Edition

Name

Quick Handler (2.0)

Synopsis

int module_quick_handler(request_rec *r, int lookup_uri)

This function is intended to provide content from a URI-based cache. If lookup_uri is set, then it should simply return OK if the URI exists, but not provide the content.

The only example of this in 2.0 is in an experimental module, mod_cache.c, as shown in Example 21-13.

Example

Example 21-13. mod_cache.c

static int cache_url_handler(request_rec *r, int lookup) { apr_status_t rv; const char *cc_in, *pragma, *auth; apr_uri_t uri = r->parsed_uri; char *url = r->unparsed_uri; apr_size_t urllen; char *path = uri.path; const char *types; cache_info *info = NULL; cache_request_rec *cache; cache_server_conf *conf = (cache_server_conf *) ap_get_module_config(r->server->module_config, &cache_module); if (r->method_number != M_GET) return DECLINED; if (!(types = ap_cache_get_cachetype(r, conf, path))) { return DECLINED; } ap_log_error(APLOG_MARK, APLOG_DEBUG | APLOG_NOERRNO, 0, r->server, "cache: URL %s is being handled by %s", path, types); urllen = strlen(url); if (urllen > MAX_URL_LENGTH) { ap_log_error(APLOG_MARK, APLOG_DEBUG | APLOG_NOERRNO, 0, r->server, "cache: URL exceeds length threshold: %s", url); return DECLINED; } if (url[urllen-1] == '/') { return DECLINED; } cache = (cache_request_rec *) ap_get_module_config(r->request_config, &cache_module); if (!cache) { cache = ap_pcalloc(r->pool, sizeof(cache_request_rec)); ap_set_module_config(r->request_config, &cache_module, cache); } cache->types ...