mod_expires.c revision 12901074f5d6b36d08be84d8637b6f2c21e0da26
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering/* ====================================================================
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * The Apache Software License, Version 1.1
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Copyright (c) 2000-2002 The Apache Software Foundation. All rights
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * reserved.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
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 * are met:
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
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 *
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.
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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/)."
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering * Alternately, this acknowledgment may appear in the software itself,
3f6fd1ba65f962702753c4ad284b588e59689a23Lennart Poettering * if and wherever such third-party acknowledgments normally appear.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
914d6c09f1a449c60c8495c179a8bbe012315ba2Tom Gundersen * 4. The names "Apache" and "Apache Software Foundation" must
3f6fd1ba65f962702753c4ad284b588e59689a23Lennart Poettering * not be used to endorse or promote products derived from this
3f6fd1ba65f962702753c4ad284b588e59689a23Lennart Poettering * software without prior written permission. For written
3f6fd1ba65f962702753c4ad284b588e59689a23Lennart Poettering * permission, please contact apache@apache.org.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
3f6fd1ba65f962702753c4ad284b588e59689a23Lennart Poettering * 5. Products derived from this software may not be called "Apache",
914d6c09f1a449c60c8495c179a8bbe012315ba2Tom Gundersen * nor may "Apache" appear in their name, without prior written
3f6fd1ba65f962702753c4ad284b588e59689a23Lennart Poettering * permission of the Apache Software Foundation.
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen *
3f6fd1ba65f962702753c4ad284b588e59689a23Lennart Poettering * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
3f6fd1ba65f962702753c4ad284b588e59689a23Lennart Poettering * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
3f6fd1ba65f962702753c4ad284b588e59689a23Lennart Poettering * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
db73295accbec0c6513817f0a64a92018592bb26Lennart Poettering * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
3f6fd1ba65f962702753c4ad284b588e59689a23Lennart Poettering * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
288a74cce597f81d3ba01d8a5ca7d2ba5b654b7eRonny Chevalier * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
3f6fd1ba65f962702753c4ad284b588e59689a23Lennart Poettering * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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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.
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering * ====================================================================
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 * <http://www.apache.org/>.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
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.
914d6c09f1a449c60c8495c179a8bbe012315ba2Tom Gundersen */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering/*
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * mod_expires.c
914d6c09f1a449c60c8495c179a8bbe012315ba2Tom Gundersen * version 0.0.11
914d6c09f1a449c60c8495c179a8bbe012315ba2Tom Gundersen * status beta
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
732b7f39a2b3b1a2af90102c6262186ae71197acRonny Chevalier * Andrew Wilson <Andrew.Wilson@cm.cf.ac.uk> 26.Jan.96
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
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
914d6c09f1a449c60c8495c179a8bbe012315ba2Tom Gundersen * be defined on a per-directory basis.
914d6c09f1a449c60c8495c179a8bbe012315ba2Tom Gundersen *
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * DIRECTIVE SYNTAX
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Valid directives are:
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * ExpiresActive on | off
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * ExpiresDefault <code><seconds>
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * ExpiresByType type/encoding <code><seconds>
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Valid values for <code> are:
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * 'M' expires header shows file modification date + <seconds>
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * 'A' expires header shows access time + <seconds>
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
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 *
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * <seconds> should be an integer value [acceptable to atoi()]
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * There is NO space between the <code> and <seconds>.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * For example, a directory which contains information which changes
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * frequently might contain:
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * # reports generated by cron every hour. don't let caches
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * # hold onto stale information
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * ExpiresDefault M3600
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Another example, our html pages can change all the time, the gifs
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * tend not to change often:
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
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 *
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 *
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * ExpiresActive on
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering *
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 *
1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen * # turn off Expires behaviour in this directory
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * # and subdirectories
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * ExpiresActive off
1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen *
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * Directives defined for a directory are valid in subdirectories
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * unless explicitly overridden by new directives in the subdirectory
1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen * .htaccess files.
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering *
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * ALTERNATIVE DIRECTIVE SYNTAX
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering *
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * Directives can also be defined in a more readable syntax of the form:
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering *
1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen * ExpiresDefault "<base> [plus] {<num> <type>}*"
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * ExpiresByType type/encoding "<base> [plus] {<num> <type>}*"
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering *
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * where <base> is one of:
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * access
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * now equivalent to 'access'
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * modification
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering *
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * where the 'plus' keyword is optional
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering *
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * where <num> should be an integer value [acceptable to atoi()]
1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen *
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * where <type> is one of:
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * years
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * months
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * weeks
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * days
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * hours
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * minutes
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * seconds
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering *
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 *
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * ExpiresDefault "access plus 1 month"
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * ExpiresDefault "access plus 4 weeks"
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * ExpiresDefault "access plus 30 days"
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering *
a6a4f528899b1dab47408733b4a423c66ea40f7aThomas Hindoe Paaboel Andersen * The expiry time can be fine-tuned by adding several '<num> <type>'
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * clauses:
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering *
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * ExpiresByType text/html "access plus 1 month 15 days 2 hours"
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * ExpiresByType image/gif "modification plus 5 hours 3 minutes"
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering *
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * ---
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering *
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * Change-log:
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]
1fc464f6fbecfc5d8ba9f7b98d19e21fb324bfb9Lennart 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:
1fc464f6fbecfc5d8ba9f7b98d19e21fb324bfb9Lennart 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.
1fc464f6fbecfc5d8ba9f7b98d19e21fb324bfb9Lennart Poettering * [Rob Hartill]
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * 04.Nov.96 'const' definitions added.
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering *
1fc464f6fbecfc5d8ba9f7b98d19e21fb324bfb9Lennart Poettering * TODO
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * add support for Cache-Control: max-age=20 from the HTTP/1.1
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * proposal (in this case, a ttl of 20 seconds) [ask roy]
1fc464f6fbecfc5d8ba9f7b98d19e21fb324bfb9Lennart Poettering * add per-file expiry and explicit expiry times - duplicates some
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * of the mod_cern_meta.c functionality. eg:
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * ExpiresExplicit index.html "modification plus 30 days"
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering *
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * BUGS
266b538958932e6fc27dfce4917336e70e17e29eTom Gundersen * Hi, welcome to the internet.
1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen */
1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering#include "apr.h"
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering#include "apr_strings.h"
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include "apr_lib.h"
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#define APR_WANT_STRFUNC
1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen#include "apr_want.h"
f647962d64e844689f3e2acfce6102fc47e76df2Michal Schmidt
f647962d64e844689f3e2acfce6102fc47e76df2Michal Schmidt#include "ap_config.h"
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include "httpd.h"
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include "http_config.h"
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include "http_log.h"
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include "http_request.h"
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersentypedef struct {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering int active;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering char *expiresdefault;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering apr_table_t *expiresbytype;
1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen} expires_dir_config;
f647962d64e844689f3e2acfce6102fc47e76df2Michal Schmidt
f647962d64e844689f3e2acfce6102fc47e76df2Michal Schmidt/* from mod_dir, why is this alias used?
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#define DIR_CMD_PERMS OR_INDEXES
3e3db0ee860025ad663b13b0ace4e6d627611332Lennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#define ACTIVE_ON 1
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering#define ACTIVE_OFF 0
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering#define ACTIVE_DONTCARE 2
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poetteringmodule AP_MODULE_DECLARE_DATA expires_module;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering
ab1525bc2d92780b4dc64bc5b9cdb52594e2df7dLennart Poetteringstatic void *create_dir_expires_config(apr_pool_t *p, char *dummy)
914d6c09f1a449c60c8495c179a8bbe012315ba2Tom Gundersen{
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering expires_dir_config *new =
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering (expires_dir_config *) apr_pcalloc(p, sizeof(expires_dir_config));
7d6884b65e6ea7317346d29bc2f6c9ba051a0cacThomas Hindoe Paaboel Andersen new->active = ACTIVE_DONTCARE;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering new->expiresdefault = "";
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering new->expiresbytype = apr_table_make(p, 4);
d6731e4c7964ee2860d4f5abdb0b52acd7a66960Tom Gundersen return (void *) new;
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering}
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poetteringstatic const char *set_expiresactive(cmd_parms *cmd, void *in_dir_config, int arg)
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering{
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering expires_dir_config *dir_config = in_dir_config;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering
914d6c09f1a449c60c8495c179a8bbe012315ba2Tom Gundersen /* if we're here at all it's because someone explicitly
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * set the active flag
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering dir_config->active = ACTIVE_ON;
3e3db0ee860025ad663b13b0ace4e6d627611332Lennart Poettering if (arg == 0) {
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering dir_config->active = ACTIVE_OFF;
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering }
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering return NULL;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering}
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering/* check_code() parse 'code' and return NULL or an error response
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * string. If we return NULL then real_code contains code converted
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * to the cnnnn format.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poetteringstatic char *check_code(apr_pool_t *p, const char *code, char **real_code)
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering{
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen char *word;
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen char base = 'X';
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen int modifier = 0;
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen int num = 0;
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen int factor = 0;
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen /* 0.0.4 compatibility?
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen */
888943fc6246b2917168fff59380b58b678ba157Lennart Poettering if ((code[0] == 'A') || (code[0] == 'M')) {
888943fc6246b2917168fff59380b58b678ba157Lennart Poettering *real_code = (char *)code;
888943fc6246b2917168fff59380b58b678ba157Lennart Poettering return NULL;
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen }
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen /* <base> [plus] {<num> <type>}*
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen */
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen /* <base>
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen */
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen word = ap_getword_conf(p, &code);
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen if (!strncasecmp(word, "now", 1) ||
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen !strncasecmp(word, "access", 1)) {
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen base = 'A';
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen }
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen else if (!strncasecmp(word, "modification", 1)) {
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen base = 'M';
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen }
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen else {
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen return apr_pstrcat(p, "bad expires code, unrecognised <base> '",
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen word, "'", NULL);
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen }
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen /* [plus]
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen */
69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering word = ap_getword_conf(p, &code);
1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen if (!strncasecmp(word, "plus", 1)) {
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen word = ap_getword_conf(p, &code);
69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering }
69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering
69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering /* {<num> <type>}*
69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering */
1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen while (word[0]) {
1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen /* <num>
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen */
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen if (apr_isdigit(word[0])) {
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen num = atoi(word);
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen }
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen else {
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen return apr_pstrcat(p, "bad expires code, numeric value expected <num> '",
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen word, "'", NULL);
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen }
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen /* <type>
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen */
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen word = ap_getword_conf(p, &code);
1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen if (word[0]) {
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen /* do nothing */
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen }
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen else {
1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen return apr_pstrcat(p, "bad expires code, missing <type>", NULL);
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen }
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen factor = 0;
1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen if (!strncasecmp(word, "years", 1)) {
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen factor = 60 * 60 * 24 * 365;
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen }
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen else if (!strncasecmp(word, "months", 2)) {
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen factor = 60 * 60 * 24 * 30;
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen }
1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen else if (!strncasecmp(word, "weeks", 1)) {
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen factor = 60 * 60 * 24 * 7;
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen }
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen else if (!strncasecmp(word, "days", 1)) {
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen factor = 60 * 60 * 24;
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen }
1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen else if (!strncasecmp(word, "hours", 1)) {
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen factor = 60 * 60;
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen }
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen else if (!strncasecmp(word, "minutes", 2)) {
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen factor = 60;
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen }
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen else if (!strncasecmp(word, "seconds", 1)) {
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen factor = 1;
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen }
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen else {
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen return apr_pstrcat(p, "bad expires code, unrecognised <type>",
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen "'", word, "'", NULL);
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen }
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen modifier = modifier + factor * num;
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen /* next <num>
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen */
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen word = ap_getword_conf(p, &code);
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen }
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen *real_code = apr_psprintf(p, "%c%d", base, modifier);
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen return NULL;
144232a8e0ea77eed8c5a456832758681b5b3511Torstein Husebø}
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersenstatic const char *set_expiresbytype(cmd_parms *cmd, void *in_dir_config,
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen const char *mime, const char *code)
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen{
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen expires_dir_config *dir_config = in_dir_config;
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen char *response, *real_code;
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen if ((response = check_code(cmd->pool, code, &real_code)) == NULL) {
1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen apr_table_setn(dir_config->expiresbytype, mime, real_code);
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen return NULL;
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen }
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen return apr_pstrcat(cmd->pool,
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen "'ExpiresByType ", mime, " ", code, "': ", response, NULL);
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen}
1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersenstatic const char *set_expiresdefault(cmd_parms *cmd, void *in_dir_config,
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen const char *code)
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen{
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen expires_dir_config * dir_config = in_dir_config;
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen char *response, *real_code;
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen if ((response = check_code(cmd->pool, code, &real_code)) == NULL) {
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen dir_config->expiresdefault = real_code;
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen return NULL;
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen }
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen return apr_pstrcat(cmd->pool,
1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen "'ExpiresDefault ", code, "': ", response, NULL);
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen}
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersenstatic const command_rec expires_cmds[] =
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen{
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen AP_INIT_FLAG("ExpiresActive", set_expiresactive, NULL, DIR_CMD_PERMS,
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen "Limited to 'on' or 'off'"),
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen AP_INIT_TAKE2("ExpiresByType", set_expiresbytype, NULL, DIR_CMD_PERMS,
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen "a MIME type followed by an expiry date code"),
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen AP_INIT_TAKE1("ExpiresDefault", set_expiresdefault, NULL, DIR_CMD_PERMS,
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen "an expiry date code"),
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen {NULL}
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen};
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen
69fb1176c403e437c4fba763ba242b540c73898fLennart Poetteringstatic void *merge_expires_dir_configs(apr_pool_t *p, void *basev, void *addv)
1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen{
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen expires_dir_config *new = (expires_dir_config *) apr_pcalloc(p, sizeof(expires_dir_config));
69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering expires_dir_config *base = (expires_dir_config *) basev;
69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering expires_dir_config *add = (expires_dir_config *) addv;
b6a3ca6d876ab59b4f29ed67f54ef87005177906Tom Gundersen
b6a3ca6d876ab59b4f29ed67f54ef87005177906Tom Gundersen if (add->active == ACTIVE_DONTCARE) {
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen new->active = base->active;
b6a3ca6d876ab59b4f29ed67f54ef87005177906Tom Gundersen }
b6a3ca6d876ab59b4f29ed67f54ef87005177906Tom Gundersen else {
b6a3ca6d876ab59b4f29ed67f54ef87005177906Tom Gundersen new->active = add->active;
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen }
b6a3ca6d876ab59b4f29ed67f54ef87005177906Tom Gundersen
b6a3ca6d876ab59b4f29ed67f54ef87005177906Tom Gundersen if (add->expiresdefault[0] != '\0') {
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen new->expiresdefault = add->expiresdefault;
b6a3ca6d876ab59b4f29ed67f54ef87005177906Tom Gundersen }
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen else {
b6a3ca6d876ab59b4f29ed67f54ef87005177906Tom Gundersen new->expiresdefault = base->expiresdefault;
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen }
69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen new->expiresbytype = apr_table_overlay(p, add->expiresbytype,
b6a3ca6d876ab59b4f29ed67f54ef87005177906Tom Gundersen base->expiresbytype);
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen return new;
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering}
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poetteringstatic int add_expires(request_rec *r)
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering{
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering expires_dir_config *conf;
b6a3ca6d876ab59b4f29ed67f54ef87005177906Tom Gundersen char *code;
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering apr_time_t base;
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering apr_time_t additional;
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering apr_time_t expires;
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering char *timestr;
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering if (ap_is_HTTP_ERROR(r->status)) /* Don't add Expires headers to errors */
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering return DECLINED;
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering if (r->main != NULL) /* Say no to subrequests */
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering return DECLINED;
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering conf = (expires_dir_config *) ap_get_module_config(r->per_dir_config, &expires_module);
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering if (conf == NULL) {
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering "internal error: %s", r->filename);
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen return HTTP_INTERNAL_SERVER_ERROR;
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen }
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen if (conf->active != ACTIVE_ON)
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen return DECLINED;
69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering
1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen /* we perhaps could use the default_type(r) in its place but that
69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering * may be 2nd guesing the desired configuration... calling table_get
69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering * with a NULL key will SEGV us
69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering *
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * I still don't know *why* r->content_type would ever be NULL, this
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * is possibly a result of fixups being called in many different
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * places. Fixups is probably the wrong place to be doing all this
1d050e1e0a7082e23ee9b31fa0b819cb332b3444Lennart Poettering * work... Bah.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Changed as of 08.Jun.96 don't DECLINE, look for an ExpiresDefault.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (r->content_type == NULL)
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering code = NULL;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering else
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering code = (char *) apr_table_get(conf->expiresbytype,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering ap_field_noparam(r->pool, r->content_type));
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (code == NULL) {
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering /* no expires defined for that type, is there a default? */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering code = conf->expiresdefault;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (code[0] == '\0')
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering return OK;
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering }
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering /* we have our code */
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering switch (code[0]) {
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering case 'M':
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering if (r->finfo.filetype == 0) {
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering /* file doesn't exist on disk, so we can't do anything based on
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering * modification time. Note that this does _not_ log an error.
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering */
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering return DECLINED;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering base = r->finfo.mtime;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering additional = atoi(&code[1]) * APR_USEC_PER_SEC;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering break;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering case 'A':
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering /* there's been some discussion and it's possible that
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * 'access time' will be stored in request structure
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering base = r->request_time;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering additional = atoi(&code[1]) * APR_USEC_PER_SEC;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering break;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering default:
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering /* expecting the add_* routines to be case-hardened this
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * is just a reminder that module is beta
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering "internal error: bad expires code: %s", r->filename);
1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen return HTTP_INTERNAL_SERVER_ERROR;
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen }
69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering
2301cb9fdb774d0a1b3d8f5e95c5d358721ccacbLennart Poettering expires = base + additional;
64d6c22905e94b02e760747c6c143dc9893083d9Thomas Hindoe Paaboel Andersen apr_table_mergen(r->headers_out, "Cache-Control",
1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen apr_psprintf(r->pool, "max-age=%qd",
914d6c09f1a449c60c8495c179a8bbe012315ba2Tom Gundersen (expires - r->request_time)
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering / APR_USEC_PER_SEC));
373d9f173f910d547159917401c4b1f84af85736Tom Gundersen timestr = apr_palloc(r->pool, APR_RFC822_DATE_LEN);
af5effc4220dab6c4c87a130bae7be441f6967caTom Gundersen apr_rfc822_date(timestr, expires);
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering apr_table_setn(r->headers_out, "Expires", timestr);
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering return OK;
0d4ad91dd4fc831c31a9775b0eadf97fea6cd7f6Alin Rauta}
0d4ad91dd4fc831c31a9775b0eadf97fea6cd7f6Alin Rauta
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poetteringstatic void register_hooks(apr_pool_t *p)
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering{
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering ap_hook_fixups(add_expires,NULL,NULL,APR_HOOK_MIDDLE);
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering}
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poetteringmodule AP_MODULE_DECLARE_DATA expires_module =
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering{
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering STANDARD20_MODULE_STUFF,
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering create_dir_expires_config, /* dir config creater */
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering merge_expires_dir_configs, /* dir merger --- default is to override */
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering NULL, /* server config */
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering NULL, /* merge server configs */
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering expires_cmds, /* command apr_table_t */
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering register_hooks /* register hooks */
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering};
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering