mod_expires.c revision 032b8a34c3911bbc5ad5385ca40af65af273bff9
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering/* ====================================================================
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * The Apache Software License, Version 1.1
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Copyright (c) 2000 The Apache Software Foundation. All rights
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Redistribution and use in source and binary forms, with or without
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * modification, are permitted provided that the following conditions
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * 1. Redistributions of source code must retain the above copyright
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * notice, this list of conditions and the following disclaimer.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * 2. Redistributions in binary form must reproduce the above copyright
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * notice, this list of conditions and the following disclaimer in
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * the documentation and/or other materials provided with the
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * distribution.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * 3. The end-user documentation included with the redistribution,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * if any, must include the following acknowledgment:
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * "This product includes software developed by the
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Apache Software Foundation (http://www.apache.org/)."
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Alternately, this acknowledgment may appear in the software itself,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * if and wherever such third-party acknowledgments normally appear.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * 4. The names "Apache" and "Apache Software Foundation" must
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * not be used to endorse or promote products derived from this
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * software without prior written permission. For written
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * permission, please contact apache@apache.org.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * 5. Products derived from this software may not be called "Apache",
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * nor may "Apache" appear in their name, without prior written
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * permission of the Apache Software Foundation.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
db73295accbec0c6513817f0a64a92018592bb26Lennart Poettering * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * SUCH DAMAGE.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * ====================================================================
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * This software consists of voluntary contributions made by many
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * individuals on behalf of the Apache Software Foundation. For more
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * information on the Apache Software Foundation, please see
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Portions of this software are based upon public domain software
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * originally written at the National Center for Supercomputing Applications,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * University of Illinois, Urbana-Champaign.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * version 0.0.11
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Andrew Wilson <Andrew.Wilson@cm.cf.ac.uk> 26.Jan.96
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * This module allows you to control the form of the Expires: header
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * that Apache issues for each access. Directives can appear in
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * configuration files or in .htaccess files so expiry semantics can
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * be defined on a per-directory basis.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * DIRECTIVE SYNTAX
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Valid directives are:
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * ExpiresActive on | off
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * ExpiresDefault <code><seconds>
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * ExpiresByType type/encoding <code><seconds>
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Valid values for <code> are:
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * 'M' expires header shows file modification date + <seconds>
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * 'A' expires header shows access time + <seconds>
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * [I'm not sure which of these is best under different
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * circumstances, I guess it's for other people to explore.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * The effects may be indistinguishable for a number of cases]
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * <seconds> should be an integer value [acceptable to atoi()]
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * There is NO space between the <code> and <seconds>.
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * For example, a directory which contains information which changes
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * frequently might contain:
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * # reports generated by cron every hour. don't let caches
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * # hold onto stale information
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * ExpiresDefault M3600
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * Another example, our html pages can change all the time, the gifs
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * tend not to change often:
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * # pages are hot (1 week), images are cold (1 month)
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * ExpiresByType text/html A604800
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * ExpiresByType image/gif A2592000
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * Expires can be turned on for all URLs on the server by placing the
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * following directive in a conf file:
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * ExpiresActive on
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * ExpiresActive can also appear in .htaccess files, enabling the
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * behaviour to be turned on or off for each chosen directory.
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * # turn off Expires behaviour in this directory
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * # and subdirectories
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * ExpiresActive off
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * Directives defined for a directory are valid in subdirectories
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * unless explicitly overridden by new directives in the subdirectory
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * .htaccess files.
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * ALTERNATIVE DIRECTIVE SYNTAX
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * Directives can also be defined in a more readable syntax of the form:
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * ExpiresDefault "<base> [plus] {<num> <type>}*"
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * ExpiresByType type/encoding "<base> [plus] {<num> <type>}*"
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * where <base> is one of:
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * now equivalent to 'access'
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * modification
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * where the 'plus' keyword is optional
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * where <num> should be an integer value [acceptable to atoi()]
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * where <type> is one of:
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * For example, any of the following directives can be used to make
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * documents expire 1 month after being accessed, by default:
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * ExpiresDefault "access plus 1 month"
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * ExpiresDefault "access plus 4 weeks"
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * ExpiresDefault "access plus 30 days"
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * The expiry time can be fine-tuned by adding several '<num> <type>'
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * ExpiresByType text/html "access plus 1 month 15 days 2 hours"
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * ExpiresByType image/gif "modification plus 5 hours 3 minutes"
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * 29.Jan.96 Hardened the add_* functions. Server will now bail out
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * if bad directives are given in the conf files.
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * 02.Feb.96 Returns DECLINED if not 'ExpiresActive on', giving other
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * expires-aware modules a chance to play with the same
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * directives. [Michael Rutman]
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * 03.Feb.96 Call tzset() before localtime(). Trying to get the module
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * to work properly in non GMT timezones.
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * 12.Feb.96 Modified directive syntax to allow more readable commands:
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * ExpiresDefault "now plus 10 days 20 seconds"
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * ExpiresDefault "access plus 30 days"
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * ExpiresDefault "modification plus 1 year 10 months 30 days"
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * 13.Feb.96 Fix call to table_get() with NULL 2nd parameter [Rob Hartill]
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * 19.Feb.96 Call gm_timestr_822() to get time formatted correctly, can't
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * rely on presence of HTTP_TIME_FORMAT in Apache 1.1+.
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * 21.Feb.96 This version (0.0.9) reverses assumptions made in 0.0.8
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * about star/star handlers. Reverting to 0.0.7 behaviour.
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * 08.Jun.96 allows ExpiresDefault to be used with responses that use
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * the DefaultType by not DECLINING, but instead skipping
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * the table_get check and then looking for an ExpiresDefault.
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * [Rob Hartill]
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * 04.Nov.96 'const' definitions added.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * add support for Cache-Control: max-age=20 from the HTTP/1.1
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * proposal (in this case, a ttl of 20 seconds) [ask roy]
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * add per-file expiry and explicit expiry times - duplicates some
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * of the mod_cern_meta.c functionality. eg:
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * ExpiresExplicit index.html "modification plus 30 days"
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Hi, welcome to the internet.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poetteringtypedef struct {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering/* from mod_dir, why is this alias used?
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poetteringstatic void *create_dir_expires_config(ap_pool_t *p, char *dummy)
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering (expires_dir_config *) ap_pcalloc(p, sizeof(expires_dir_config));
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering new->expiresbytype = ap_make_table(p, 4);
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering return (void *) new;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poetteringstatic const char *set_expiresactive(cmd_parms *cmd, expires_dir_config * dir_config, int arg)
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering /* if we're here at all it's because someone explicitly
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * set the active flag
3e3db0ee860025ad663b13b0ace4e6d627611332Lennart Poettering/* check_code() parse 'code' and return NULL or an error response
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * string. If we return NULL then real_code contains code converted
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * to the cnnnn format.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poetteringstatic char *check_code(ap_pool_t *p, const char *code, char **real_code)
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering /* 0.0.4 compatibility?
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if ((code[0] == 'A') || (code[0] == 'M')) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering /* <base> [plus] {<num> <type>}*
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering else if (!strncasecmp(word, "modification", 1)) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering return ap_pstrcat(p, "bad expires code, unrecognised <base> '",
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering /* {<num> <type>}*
373d9f173f910d547159917401c4b1f84af85736Tom Gundersen return ap_pstrcat(p, "bad expires code, numeric value expected <num> '",
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering /* do nothing */
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering return ap_pstrcat(p, "bad expires code, missing <type>", NULL);
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering else if (!strncasecmp(word, "months", 2)) {
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering else if (!strncasecmp(word, "weeks", 1)) {
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering else if (!strncasecmp(word, "days", 1)) {
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering else if (!strncasecmp(word, "hours", 1)) {
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering else if (!strncasecmp(word, "minutes", 2)) {
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering else if (!strncasecmp(word, "seconds", 1)) {
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering return ap_pstrcat(p, "bad expires code, unrecognised <type>",
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering *real_code = ap_psprintf(p, "%c%d", base, modifier);
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poetteringstatic const char *set_expiresbytype(cmd_parms *cmd, expires_dir_config * dir_config, char *mime, char *code)
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering if ((response = check_code(cmd->pool, code, &real_code)) == NULL) {
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering ap_table_setn(dir_config->expiresbytype, mime, real_code);
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering "'ExpiresByType ", mime, " ", code, "': ", response, NULL);
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poetteringstatic const char *set_expiresdefault(cmd_parms *cmd, expires_dir_config * dir_config, char *code)
d6731e4c7964ee2860d4f5abdb0b52acd7a66960Tom Gundersen if ((response = check_code(cmd->pool, code, &real_code)) == NULL) {
67272d157a35e5cda4e5c904eafdcc23d20541d1Tom Gundersen "'ExpiresDefault ", code, "': ", response, NULL);
1405434b6986d3c3d6ccaaa2e472bad843cbbfa1Lennart Poettering {"ExpiresActive", set_expiresactive, NULL, DIR_CMD_PERMS, FLAG,
1405434b6986d3c3d6ccaaa2e472bad843cbbfa1Lennart Poettering "Limited to 'on' or 'off'"},
1405434b6986d3c3d6ccaaa2e472bad843cbbfa1Lennart Poettering {"ExpiresBytype", set_expiresbytype, NULL, DIR_CMD_PERMS, TAKE2,
67272d157a35e5cda4e5c904eafdcc23d20541d1Tom Gundersen "a MIME type followed by an expiry date code"},
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering {"ExpiresDefault", set_expiresdefault, NULL, DIR_CMD_PERMS, TAKE1,
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering "an expiry date code"},
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poetteringstatic void *merge_expires_dir_configs(ap_pool_t *p, void *basev, void *addv)
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering expires_dir_config *new = (expires_dir_config *) ap_pcalloc(p, sizeof(expires_dir_config));
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering expires_dir_config *base = (expires_dir_config *) basev;
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering expires_dir_config *add = (expires_dir_config *) addv;
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering new->expiresbytype = ap_overlay_tables(p, add->expiresbytype,
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering if (ap_is_HTTP_ERROR(r->status)) /* Don't add Expires headers to errors */
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering if (r->main != NULL) /* Say no to subrequests */
db73295accbec0c6513817f0a64a92018592bb26Lennart Poettering conf = (expires_dir_config *) ap_get_module_config(r->per_dir_config, &expires_module);
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, 0, r,
2301cb9fdb774d0a1b3d8f5e95c5d358721ccacbLennart Poettering /* we perhaps could use the default_type(r) in its place but that
c627729fc49d59ffcecc09555a34d9dd139927ceLennart Poettering * may be 2nd guesing the desired configuration... calling table_get
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering * with a NULL key will SEGV us
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering * I still don't know *why* r->content_type would ever be NULL, this
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering * is possibly a result of fixups being called in many different
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering * places. Fixups is probably the wrong place to be doing all this
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering * work... Bah.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Changed as of 08.Jun.96 don't DECLINE, look for an ExpiresDefault.
f7d68aa8c9430dfddee5f913f93b405a5d75723aLennart Poettering code = (char *) ap_table_get(conf->expiresbytype,
f7d68aa8c9430dfddee5f913f93b405a5d75723aLennart Poettering ap_field_noparam(r->pool, r->content_type));
f7d68aa8c9430dfddee5f913f93b405a5d75723aLennart Poettering /* no expires defined for that type, is there a default? */
f7d68aa8c9430dfddee5f913f93b405a5d75723aLennart Poettering /* we have our code */
e92da1e5d0a3b38804e173af136ec7a076c7757eLennart Poettering /* file doesn't exist on disk, so we can't do anything based on
f7d68aa8c9430dfddee5f913f93b405a5d75723aLennart Poettering * modification time. Note that this does _not_ log an error.
f7d68aa8c9430dfddee5f913f93b405a5d75723aLennart Poettering /* there's been some discussion and it's possible that
f7d68aa8c9430dfddee5f913f93b405a5d75723aLennart Poettering * 'access time' will be stored in request structure
f7d68aa8c9430dfddee5f913f93b405a5d75723aLennart Poettering /* expecting the add_* routines to be case-hardened this
f7d68aa8c9430dfddee5f913f93b405a5d75723aLennart Poettering * is just a reminder that module is beta
f7d68aa8c9430dfddee5f913f93b405a5d75723aLennart Poettering ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, 0, r,
03cc0fd1431b82e59c11ae12a274c1f2df23169dLennart Poettering "internal error: bad expires code: %s", r->filename);
c627729fc49d59ffcecc09555a34d9dd139927ceLennart Poettering ap_table_mergen(r->headers_out, "Cache-Control",
03cc0fd1431b82e59c11ae12a274c1f2df23169dLennart Poettering timestr = ap_palloc(r->pool, AP_RFC822_DATE_LEN);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering ap_table_setn(r->headers_out, "Expires", timestr);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poetteringstatic void register_hooks(void)
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering ap_hook_fixups(add_expires,NULL,NULL,AP_HOOK_MIDDLE);
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering create_dir_expires_config, /* dir config creater */
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering merge_expires_dir_configs, /* dir merger --- default is to override */