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git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@85292 13f79535-47bb-0310-9956-ffa450edef68
4193 lines
132 KiB
C
4193 lines
132 KiB
C
/* ====================================================================
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* The Apache Software License, Version 1.1
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*
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* Copyright (c) 2000 The Apache Software Foundation. All rights
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* reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. The end-user documentation included with the redistribution,
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* if any, must include the following acknowledgment:
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* "This product includes software developed by the
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* Apache Software Foundation (http://www.apache.org/)."
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* Alternately, this acknowledgment may appear in the software itself,
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* if and wherever such third-party acknowledgments normally appear.
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*
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* 4. The names "Apache" and "Apache Software Foundation" must
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* not be used to endorse or promote products derived from this
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* software without prior written permission. For written
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* permission, please contact apache@apache.org.
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*
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* 5. Products derived from this software may not be called "Apache",
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* nor may "Apache" appear in their name, without prior written
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* permission of the Apache Software Foundation.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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* ====================================================================
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*
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* This software consists of voluntary contributions made by many
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* individuals on behalf of the Apache Software Foundation. For more
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* information on the Apache Software Foundation, please see
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* <http://www.apache.org/>.
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*
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* Portions of this software are based upon public domain software
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* originally written at the National Center for Supercomputing Applications,
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* University of Illinois, Urbana-Champaign.
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*/
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/* _ _ _
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** _ __ ___ ___ __| | _ __ _____ ___ __(_) |_ ___
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** | '_ ` _ \ / _ \ / _` | | '__/ _ \ \ /\ / / '__| | __/ _ \
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** | | | | | | (_) | (_| | | | | __/\ V V /| | | | || __/
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** |_| |_| |_|\___/ \__,_|___|_| \___| \_/\_/ |_| |_|\__\___|
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** |_____|
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**
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** URL Rewriting Module
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**
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** This module uses a rule-based rewriting engine (based on a
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** regular-expression parser) to rewrite requested URLs on the fly.
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**
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** It supports an unlimited number of additional rule conditions (which can
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** operate on a lot of variables, even on HTTP headers) for granular
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** matching and even external database lookups (either via plain text
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** tables, DBM hash files or even external processes) for advanced URL
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** substitution.
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**
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** It operates on the full URLs (including the PATH_INFO part) both in
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** per-server context (httpd.conf) and per-dir context (.htaccess) and even
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** can generate QUERY_STRING parts on result. The rewriting result finally
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** can lead to internal subprocessing, external request redirection or even
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** to internal proxy throughput.
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**
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** This module was originally written in April 1996 and
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** gifted exclusively to the The Apache Software Foundation in July 1997 by
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**
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** Ralf S. Engelschall
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** rse@engelschall.com
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** www.engelschall.com
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*/
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#include "ap_config.h"
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#include "httpd.h"
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#include "http_config.h"
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#include "http_request.h"
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#include "http_core.h"
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#include "http_log.h"
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#include "http_protocol.h"
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#include "mod_rewrite.h"
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#if !defined(OS2) && !defined(WIN32)
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#include "unixd.h"
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#endif
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#ifndef NO_WRITEV
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#ifndef NETWARE
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#endif
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#ifdef HAVE_SYS_UIO_H
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#include <sys/uio.h>
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#endif
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#endif
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/*
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** +-------------------------------------------------------+
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** | |
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** | static module configuration
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** | |
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** +-------------------------------------------------------+
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*/
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/*
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** Our interface to the Apache server kernel:
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**
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** o Runtime logic of a request is as following:
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** while(request or subrequest)
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** foreach(stage #0...#9)
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** foreach(module) (**)
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** try to run hook
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**
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** o the order of modules at (**) is the inverted order as
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** given in the "Configuration" file, i.e. the last module
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** specified is the first one called for each hook!
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** The core module is always the last!
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**
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** o there are two different types of result checking and
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** continue processing:
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** for hook #0,#1,#4,#5,#6,#8:
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** hook run loop stops on first modules which gives
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** back a result != DECLINED, i.e. it usually returns OK
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** which says "OK, module has handled this _stage_" and for #1
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** this have not to mean "Ok, the filename is now valid".
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** for hook #2,#3,#7,#9:
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** all hooks are run, independend of result
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**
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** o at the last stage, the core module always
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** - says "BAD_REQUEST" if r->filename does not begin with "/"
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** - prefix URL with document_root or replaced server_root
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** with document_root and sets r->filename
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** - always return a "OK" independed if the file really exists
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** or not!
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*/
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/* The section for the Configure script:
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* XXX: this needs updating for apache-2.0 configuration method
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* MODULE-DEFINITION-START
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* Name: rewrite_module
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* ConfigStart
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. ./helpers/find-dbm-lib
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if [ "x$found_dbm" = "x1" ]; then
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echo " enabling DBM support for mod_rewrite"
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else
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echo " disabling DBM support for mod_rewrite"
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echo " (perhaps you need to add -ldbm, -lndbm or -lgdbm to EXTRA_LIBS)"
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CFLAGS="$CFLAGS -DNO_DBM_REWRITEMAP"
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fi
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* ConfigEnd
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* MODULE-DEFINITION-END
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*/
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/* the ap_table_t of commands we provide */
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static const command_rec command_table[] = {
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{ "RewriteEngine", cmd_rewriteengine, NULL, OR_FILEINFO, FLAG,
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"On or Off to enable or disable (default) the whole rewriting engine" },
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{ "RewriteOptions", cmd_rewriteoptions, NULL, OR_FILEINFO, ITERATE,
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"List of option strings to set" },
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{ "RewriteBase", cmd_rewritebase, NULL, OR_FILEINFO, TAKE1,
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"the base URL of the per-directory context" },
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{ "RewriteCond", cmd_rewritecond, NULL, OR_FILEINFO, RAW_ARGS,
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"an input string and a to be applied regexp-pattern" },
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{ "RewriteRule", cmd_rewriterule, NULL, OR_FILEINFO, RAW_ARGS,
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"an URL-applied regexp-pattern and a substitution URL" },
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{ "RewriteMap", cmd_rewritemap, NULL, RSRC_CONF, TAKE2,
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"a mapname and a filename" },
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{ "RewriteLock", cmd_rewritelock, NULL, RSRC_CONF, TAKE1,
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"the filename of a lockfile used for inter-process synchronization"},
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{ "RewriteLog", cmd_rewritelog, NULL, RSRC_CONF, TAKE1,
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"the filename of the rewriting logfile" },
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{ "RewriteLogLevel", cmd_rewriteloglevel, NULL, RSRC_CONF, TAKE1,
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"the level of the rewriting logfile verbosity "
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"(0=none, 1=std, .., 9=max)" },
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{ NULL }
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};
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/* the ap_table_t of content handlers we provide */
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static const handler_rec handler_table[] = {
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{ "redirect-handler", handler_redirect },
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{ NULL }
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};
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static void register_hooks(void)
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{
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ap_hook_post_config(init_module,NULL,NULL,AP_HOOK_MIDDLE);
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ap_hook_child_init(init_child,NULL,NULL,AP_HOOK_MIDDLE);
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ap_hook_fixups(hook_fixup,NULL,NULL,AP_HOOK_FIRST);
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ap_hook_translate_name(hook_uri2file,NULL,NULL,AP_HOOK_FIRST);
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ap_hook_type_checker(hook_mimetype,NULL,NULL,AP_HOOK_MIDDLE);
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}
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/* the main config structure */
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module MODULE_VAR_EXPORT rewrite_module = {
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STANDARD20_MODULE_STUFF,
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config_perdir_create, /* create per-dir config structures */
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config_perdir_merge, /* merge per-dir config structures */
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config_server_create, /* create per-server config structures */
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config_server_merge, /* merge per-server config structures */
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command_table, /* ap_table_t of config file commands */
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handler_table, /* [#8] MIME-typed-dispatched handlers */
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register_hooks /* register hooks */
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};
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/* the cache */
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static cache *cachep;
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/* whether proxy module is available or not */
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static int proxy_available;
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static int once_through = 0;
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static const char *lockname;
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static ap_lock_t *rewrite_map_lock = NULL;
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static ap_lock_t *rewrite_log_lock = NULL;
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/*
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** +-------------------------------------------------------+
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** | |
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** | configuration directive handling
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** | |
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** +-------------------------------------------------------+
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*/
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/*
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**
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** per-server configuration structure handling
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**
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*/
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static void *config_server_create(ap_pool_t *p, server_rec *s)
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{
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rewrite_server_conf *a;
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a = (rewrite_server_conf *)ap_pcalloc(p, sizeof(rewrite_server_conf));
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a->state = ENGINE_DISABLED;
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a->options = OPTION_NONE;
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a->rewritelogfile = NULL;
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a->rewritelogfp = NULL;
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a->rewriteloglevel = 0;
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a->rewritemaps = ap_make_array(p, 2, sizeof(rewritemap_entry));
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a->rewriteconds = ap_make_array(p, 2, sizeof(rewritecond_entry));
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a->rewriterules = ap_make_array(p, 2, sizeof(rewriterule_entry));
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a->server = s;
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return (void *)a;
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}
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static void *config_server_merge(ap_pool_t *p, void *basev, void *overridesv)
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{
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rewrite_server_conf *a, *base, *overrides;
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a = (rewrite_server_conf *)ap_pcalloc(p, sizeof(rewrite_server_conf));
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base = (rewrite_server_conf *)basev;
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overrides = (rewrite_server_conf *)overridesv;
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a->state = overrides->state;
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a->options = overrides->options;
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a->server = overrides->server;
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if (a->options & OPTION_INHERIT) {
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/*
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* local directives override
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* and anything else is inherited
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*/
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a->rewriteloglevel = overrides->rewriteloglevel != 0
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? overrides->rewriteloglevel
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: base->rewriteloglevel;
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a->rewritelogfile = overrides->rewritelogfile != NULL
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? overrides->rewritelogfile
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: base->rewritelogfile;
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a->rewritelogfp = overrides->rewritelogfp != NULL
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? overrides->rewritelogfp
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: base->rewritelogfp;
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a->rewritemaps = ap_append_arrays(p, overrides->rewritemaps,
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base->rewritemaps);
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a->rewriteconds = ap_append_arrays(p, overrides->rewriteconds,
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base->rewriteconds);
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a->rewriterules = ap_append_arrays(p, overrides->rewriterules,
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base->rewriterules);
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}
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else {
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/*
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* local directives override
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* and anything else gets defaults
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*/
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a->rewriteloglevel = overrides->rewriteloglevel;
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a->rewritelogfile = overrides->rewritelogfile;
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a->rewritelogfp = overrides->rewritelogfp;
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a->rewritemaps = overrides->rewritemaps;
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a->rewriteconds = overrides->rewriteconds;
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a->rewriterules = overrides->rewriterules;
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}
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return (void *)a;
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}
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/*
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**
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** per-directory configuration structure handling
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**
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*/
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static void *config_perdir_create(ap_pool_t *p, char *path)
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{
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rewrite_perdir_conf *a;
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a = (rewrite_perdir_conf *)ap_pcalloc(p, sizeof(rewrite_perdir_conf));
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a->state = ENGINE_DISABLED;
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a->options = OPTION_NONE;
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a->baseurl = NULL;
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a->rewriteconds = ap_make_array(p, 2, sizeof(rewritecond_entry));
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a->rewriterules = ap_make_array(p, 2, sizeof(rewriterule_entry));
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if (path == NULL) {
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a->directory = NULL;
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}
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else {
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/* make sure it has a trailing slash */
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if (path[strlen(path)-1] == '/') {
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a->directory = ap_pstrdup(p, path);
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}
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else {
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a->directory = ap_pstrcat(p, path, "/", NULL);
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}
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}
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return (void *)a;
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}
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static void *config_perdir_merge(ap_pool_t *p, void *basev, void *overridesv)
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{
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rewrite_perdir_conf *a, *base, *overrides;
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a = (rewrite_perdir_conf *)ap_pcalloc(p,
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sizeof(rewrite_perdir_conf));
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base = (rewrite_perdir_conf *)basev;
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overrides = (rewrite_perdir_conf *)overridesv;
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a->state = overrides->state;
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a->options = overrides->options;
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a->directory = overrides->directory;
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a->baseurl = overrides->baseurl;
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if (a->options & OPTION_INHERIT) {
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a->rewriteconds = ap_append_arrays(p, overrides->rewriteconds,
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base->rewriteconds);
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a->rewriterules = ap_append_arrays(p, overrides->rewriterules,
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base->rewriterules);
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}
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else {
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a->rewriteconds = overrides->rewriteconds;
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a->rewriterules = overrides->rewriterules;
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}
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return (void *)a;
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}
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/*
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**
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** the configuration commands
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**
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*/
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static const char *cmd_rewriteengine(cmd_parms *cmd,
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rewrite_perdir_conf *dconf, int flag)
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{
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rewrite_server_conf *sconf;
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sconf =
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(rewrite_server_conf *)ap_get_module_config(cmd->server->module_config,
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&rewrite_module);
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if (cmd->path == NULL) { /* is server command */
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sconf->state = (flag ? ENGINE_ENABLED : ENGINE_DISABLED);
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}
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else /* is per-directory command */ {
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dconf->state = (flag ? ENGINE_ENABLED : ENGINE_DISABLED);
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}
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return NULL;
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}
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static const char *cmd_rewriteoptions(cmd_parms *cmd,
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rewrite_perdir_conf *dconf, char *option)
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{
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rewrite_server_conf *sconf;
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const char *err;
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sconf = (rewrite_server_conf *)
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ap_get_module_config(cmd->server->module_config, &rewrite_module);
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if (cmd->path == NULL) { /* is server command */
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err = cmd_rewriteoptions_setoption(cmd->pool,
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&(sconf->options), option);
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}
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else { /* is per-directory command */
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err = cmd_rewriteoptions_setoption(cmd->pool,
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&(dconf->options), option);
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}
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return err;
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}
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static const char *cmd_rewriteoptions_setoption(ap_pool_t *p, int *options,
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char *name)
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{
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if (strcasecmp(name, "inherit") == 0) {
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*options |= OPTION_INHERIT;
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}
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else {
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return ap_pstrcat(p, "RewriteOptions: unknown option '",
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name, "'\n", NULL);
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}
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return NULL;
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}
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static const char *cmd_rewritelog(cmd_parms *cmd, void *dconf, char *a1)
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{
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rewrite_server_conf *sconf;
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sconf = (rewrite_server_conf *)
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ap_get_module_config(cmd->server->module_config, &rewrite_module);
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sconf->rewritelogfile = a1;
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return NULL;
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}
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static const char *cmd_rewriteloglevel(cmd_parms *cmd, void *dconf, char *a1)
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{
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rewrite_server_conf *sconf;
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sconf = (rewrite_server_conf *)
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ap_get_module_config(cmd->server->module_config, &rewrite_module);
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sconf->rewriteloglevel = atoi(a1);
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return NULL;
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}
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static const char *cmd_rewritemap(cmd_parms *cmd, void *dconf, char *a1,
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char *a2)
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{
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rewrite_server_conf *sconf;
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rewritemap_entry *newmap;
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struct stat st;
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sconf = (rewrite_server_conf *)
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ap_get_module_config(cmd->server->module_config, &rewrite_module);
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newmap = ap_push_array(sconf->rewritemaps);
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newmap->name = a1;
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newmap->func = NULL;
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if (strncmp(a2, "txt:", 4) == 0) {
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newmap->type = MAPTYPE_TXT;
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newmap->datafile = a2+4;
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newmap->checkfile = a2+4;
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}
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else if (strncmp(a2, "rnd:", 4) == 0) {
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newmap->type = MAPTYPE_RND;
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newmap->datafile = a2+4;
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newmap->checkfile = a2+4;
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}
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else if (strncmp(a2, "dbm:", 4) == 0) {
|
|
#ifndef NO_DBM_REWRITEMAP
|
|
newmap->type = MAPTYPE_DBM;
|
|
newmap->datafile = a2+4;
|
|
newmap->checkfile = ap_pstrcat(cmd->pool, a2+4, NDBM_FILE_SUFFIX, NULL);
|
|
#else
|
|
return ap_pstrdup(cmd->pool, "RewriteMap: cannot use NDBM mapfile, "
|
|
"because no NDBM support is compiled in");
|
|
#endif
|
|
}
|
|
else if (strncmp(a2, "prg:", 4) == 0) {
|
|
newmap->type = MAPTYPE_PRG;
|
|
newmap->datafile = a2+4;
|
|
newmap->checkfile = a2+4;
|
|
}
|
|
else if (strncmp(a2, "int:", 4) == 0) {
|
|
newmap->type = MAPTYPE_INT;
|
|
newmap->datafile = NULL;
|
|
newmap->checkfile = NULL;
|
|
if (strcmp(a2+4, "tolower") == 0) {
|
|
newmap->func = rewrite_mapfunc_tolower;
|
|
}
|
|
else if (strcmp(a2+4, "toupper") == 0) {
|
|
newmap->func = rewrite_mapfunc_toupper;
|
|
}
|
|
else if (strcmp(a2+4, "escape") == 0) {
|
|
newmap->func = rewrite_mapfunc_escape;
|
|
}
|
|
else if (strcmp(a2+4, "unescape") == 0) {
|
|
newmap->func = rewrite_mapfunc_unescape;
|
|
}
|
|
else if (sconf->state == ENGINE_ENABLED) {
|
|
return ap_pstrcat(cmd->pool, "RewriteMap: internal map not found:",
|
|
a2+4, NULL);
|
|
}
|
|
}
|
|
else {
|
|
newmap->type = MAPTYPE_TXT;
|
|
newmap->datafile = a2;
|
|
newmap->checkfile = a2;
|
|
}
|
|
newmap->fpin = NULL;
|
|
newmap->fpout = NULL;
|
|
|
|
if (newmap->checkfile && (sconf->state == ENGINE_ENABLED)
|
|
&& (stat(newmap->checkfile, &st) == -1)) {
|
|
return ap_pstrcat(cmd->pool,
|
|
"RewriteMap: map file or program not found:",
|
|
newmap->checkfile, NULL);
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static const char *cmd_rewritelock(cmd_parms *cmd, void *dconf, char *a1)
|
|
{
|
|
const char *error;
|
|
|
|
if ((error = ap_check_cmd_context(cmd, GLOBAL_ONLY)) != NULL)
|
|
return error;
|
|
|
|
lockname = a1;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static const char *cmd_rewritebase(cmd_parms *cmd, rewrite_perdir_conf *dconf,
|
|
char *a1)
|
|
{
|
|
if (cmd->path == NULL || dconf == NULL) {
|
|
return "RewriteBase: only valid in per-directory config files";
|
|
}
|
|
if (a1[0] == '\0') {
|
|
return "RewriteBase: empty URL not allowed";
|
|
}
|
|
if (a1[0] != '/') {
|
|
return "RewriteBase: argument is not a valid URL";
|
|
}
|
|
|
|
dconf->baseurl = a1;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static const char *cmd_rewritecond(cmd_parms *cmd, rewrite_perdir_conf *dconf,
|
|
char *str)
|
|
{
|
|
rewrite_server_conf *sconf;
|
|
rewritecond_entry *newcond;
|
|
regex_t *regexp;
|
|
char *a1;
|
|
char *a2;
|
|
char *a3;
|
|
char *cp;
|
|
const char *err;
|
|
int rc;
|
|
|
|
sconf = (rewrite_server_conf *)
|
|
ap_get_module_config(cmd->server->module_config, &rewrite_module);
|
|
|
|
/* make a new entry in the internal temporary rewrite rule list */
|
|
if (cmd->path == NULL) { /* is server command */
|
|
newcond = ap_push_array(sconf->rewriteconds);
|
|
}
|
|
else { /* is per-directory command */
|
|
newcond = ap_push_array(dconf->rewriteconds);
|
|
}
|
|
|
|
/* parse the argument line ourself */
|
|
if (parseargline(str, &a1, &a2, &a3)) {
|
|
return ap_pstrcat(cmd->pool, "RewriteCond: bad argument line '", str,
|
|
"'\n", NULL);
|
|
}
|
|
|
|
/* arg1: the input string */
|
|
newcond->input = ap_pstrdup(cmd->pool, a1);
|
|
|
|
/* arg3: optional flags field
|
|
(this have to be first parsed, because we need to
|
|
know if the regex should be compiled with ICASE!) */
|
|
newcond->flags = CONDFLAG_NONE;
|
|
if (a3 != NULL) {
|
|
if ((err = cmd_rewritecond_parseflagfield(cmd->pool, newcond,
|
|
a3)) != NULL) {
|
|
return err;
|
|
}
|
|
}
|
|
|
|
/* arg2: the pattern
|
|
try to compile the regexp to test if is ok */
|
|
cp = a2;
|
|
if (cp[0] == '!') {
|
|
newcond->flags |= CONDFLAG_NOTMATCH;
|
|
cp++;
|
|
}
|
|
|
|
/* now be careful: Under the POSIX regex library
|
|
we can compile the pattern for case insensitive matching,
|
|
under the old V8 library we have to do it self via a hack */
|
|
if (newcond->flags & CONDFLAG_NOCASE) {
|
|
rc = ((regexp = ap_pregcomp(cmd->pool, cp, REG_EXTENDED|REG_ICASE))
|
|
== NULL);
|
|
}
|
|
else {
|
|
rc = ((regexp = ap_pregcomp(cmd->pool, cp, REG_EXTENDED)) == NULL);
|
|
}
|
|
if (rc) {
|
|
return ap_pstrcat(cmd->pool,
|
|
"RewriteCond: cannot compile regular expression '",
|
|
a2, "'\n", NULL);
|
|
}
|
|
|
|
newcond->pattern = ap_pstrdup(cmd->pool, cp);
|
|
newcond->regexp = regexp;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static const char *cmd_rewritecond_parseflagfield(ap_pool_t *p,
|
|
rewritecond_entry *cfg,
|
|
char *str)
|
|
{
|
|
char *cp;
|
|
char *cp1;
|
|
char *cp2;
|
|
char *cp3;
|
|
char *key;
|
|
char *val;
|
|
const char *err;
|
|
|
|
if (str[0] != '[' || str[strlen(str)-1] != ']') {
|
|
return "RewriteCond: bad flag delimiters";
|
|
}
|
|
|
|
cp = str+1;
|
|
str[strlen(str)-1] = ','; /* for simpler parsing */
|
|
for ( ; *cp != '\0'; ) {
|
|
/* skip whitespaces */
|
|
for ( ; (*cp == ' ' || *cp == '\t') && *cp != '\0'; cp++)
|
|
;
|
|
if (*cp == '\0') {
|
|
break;
|
|
}
|
|
cp1 = cp;
|
|
if ((cp2 = strchr(cp, ',')) != NULL) {
|
|
cp = cp2+1;
|
|
for ( ; (*(cp2-1) == ' ' || *(cp2-1) == '\t'); cp2--)
|
|
;
|
|
*cp2 = '\0';
|
|
if ((cp3 = strchr(cp1, '=')) != NULL) {
|
|
*cp3 = '\0';
|
|
key = cp1;
|
|
val = cp3+1;
|
|
}
|
|
else {
|
|
key = cp1;
|
|
val = "";
|
|
}
|
|
if ((err = cmd_rewritecond_setflag(p, cfg, key, val)) != NULL) {
|
|
return err;
|
|
}
|
|
}
|
|
else {
|
|
break;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static const char *cmd_rewritecond_setflag(ap_pool_t *p, rewritecond_entry *cfg,
|
|
char *key, char *val)
|
|
{
|
|
if ( strcasecmp(key, "nocase") == 0
|
|
|| strcasecmp(key, "NC") == 0 ) {
|
|
cfg->flags |= CONDFLAG_NOCASE;
|
|
}
|
|
else if ( strcasecmp(key, "ornext") == 0
|
|
|| strcasecmp(key, "OR") == 0 ) {
|
|
cfg->flags |= CONDFLAG_ORNEXT;
|
|
}
|
|
else {
|
|
return ap_pstrcat(p, "RewriteCond: unknown flag '", key, "'\n", NULL);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static const char *cmd_rewriterule(cmd_parms *cmd, rewrite_perdir_conf *dconf,
|
|
char *str)
|
|
{
|
|
rewrite_server_conf *sconf;
|
|
rewriterule_entry *newrule;
|
|
regex_t *regexp;
|
|
char *a1;
|
|
char *a2;
|
|
char *a3;
|
|
char *cp;
|
|
const char *err;
|
|
int mode;
|
|
|
|
sconf = (rewrite_server_conf *)
|
|
ap_get_module_config(cmd->server->module_config, &rewrite_module);
|
|
|
|
/* make a new entry in the internal rewrite rule list */
|
|
if (cmd->path == NULL) { /* is server command */
|
|
newrule = ap_push_array(sconf->rewriterules);
|
|
}
|
|
else { /* is per-directory command */
|
|
newrule = ap_push_array(dconf->rewriterules);
|
|
}
|
|
|
|
/* parse the argument line ourself */
|
|
if (parseargline(str, &a1, &a2, &a3)) {
|
|
return ap_pstrcat(cmd->pool, "RewriteRule: bad argument line '", str,
|
|
"'\n", NULL);
|
|
}
|
|
|
|
/* arg3: optional flags field */
|
|
newrule->forced_mimetype = NULL;
|
|
newrule->forced_responsecode = HTTP_MOVED_TEMPORARILY;
|
|
newrule->flags = RULEFLAG_NONE;
|
|
newrule->env[0] = NULL;
|
|
newrule->skip = 0;
|
|
if (a3 != NULL) {
|
|
if ((err = cmd_rewriterule_parseflagfield(cmd->pool, newrule,
|
|
a3)) != NULL) {
|
|
return err;
|
|
}
|
|
}
|
|
|
|
/* arg1: the pattern
|
|
* try to compile the regexp to test if is ok
|
|
*/
|
|
cp = a1;
|
|
if (cp[0] == '!') {
|
|
newrule->flags |= RULEFLAG_NOTMATCH;
|
|
cp++;
|
|
}
|
|
mode = REG_EXTENDED;
|
|
if (newrule->flags & RULEFLAG_NOCASE) {
|
|
mode |= REG_ICASE;
|
|
}
|
|
if ((regexp = ap_pregcomp(cmd->pool, cp, mode)) == NULL) {
|
|
return ap_pstrcat(cmd->pool,
|
|
"RewriteRule: cannot compile regular expression '",
|
|
a1, "'\n", NULL);
|
|
}
|
|
newrule->pattern = ap_pstrdup(cmd->pool, cp);
|
|
newrule->regexp = regexp;
|
|
|
|
/* arg2: the output string
|
|
* replace the $<N> by \<n> which is needed by the currently
|
|
* used Regular Expression library
|
|
*/
|
|
newrule->output = ap_pstrdup(cmd->pool, a2);
|
|
|
|
/* now, if the server or per-dir config holds an
|
|
* array of RewriteCond entries, we take it for us
|
|
* and clear the array
|
|
*/
|
|
if (cmd->path == NULL) { /* is server command */
|
|
newrule->rewriteconds = sconf->rewriteconds;
|
|
sconf->rewriteconds = ap_make_array(cmd->pool, 2,
|
|
sizeof(rewritecond_entry));
|
|
}
|
|
else { /* is per-directory command */
|
|
newrule->rewriteconds = dconf->rewriteconds;
|
|
dconf->rewriteconds = ap_make_array(cmd->pool, 2,
|
|
sizeof(rewritecond_entry));
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static const char *cmd_rewriterule_parseflagfield(ap_pool_t *p,
|
|
rewriterule_entry *cfg,
|
|
char *str)
|
|
{
|
|
char *cp;
|
|
char *cp1;
|
|
char *cp2;
|
|
char *cp3;
|
|
char *key;
|
|
char *val;
|
|
const char *err;
|
|
|
|
if (str[0] != '[' || str[strlen(str)-1] != ']') {
|
|
return "RewriteRule: bad flag delimiters";
|
|
}
|
|
|
|
cp = str+1;
|
|
str[strlen(str)-1] = ','; /* for simpler parsing */
|
|
for ( ; *cp != '\0'; ) {
|
|
/* skip whitespaces */
|
|
for ( ; (*cp == ' ' || *cp == '\t') && *cp != '\0'; cp++)
|
|
;
|
|
if (*cp == '\0') {
|
|
break;
|
|
}
|
|
cp1 = cp;
|
|
if ((cp2 = strchr(cp, ',')) != NULL) {
|
|
cp = cp2+1;
|
|
for ( ; (*(cp2-1) == ' ' || *(cp2-1) == '\t'); cp2--)
|
|
;
|
|
*cp2 = '\0';
|
|
if ((cp3 = strchr(cp1, '=')) != NULL) {
|
|
*cp3 = '\0';
|
|
key = cp1;
|
|
val = cp3+1;
|
|
}
|
|
else {
|
|
key = cp1;
|
|
val = "";
|
|
}
|
|
if ((err = cmd_rewriterule_setflag(p, cfg, key, val)) != NULL) {
|
|
return err;
|
|
}
|
|
}
|
|
else {
|
|
break;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static const char *cmd_rewriterule_setflag(ap_pool_t *p, rewriterule_entry *cfg,
|
|
char *key, char *val)
|
|
{
|
|
int status = 0;
|
|
int i;
|
|
|
|
if ( strcasecmp(key, "redirect") == 0
|
|
|| strcasecmp(key, "R") == 0 ) {
|
|
cfg->flags |= RULEFLAG_FORCEREDIRECT;
|
|
if (strlen(val) > 0) {
|
|
if (strcasecmp(val, "permanent") == 0) {
|
|
status = HTTP_MOVED_PERMANENTLY;
|
|
}
|
|
else if (strcasecmp(val, "temp") == 0) {
|
|
status = HTTP_MOVED_TEMPORARILY;
|
|
}
|
|
else if (strcasecmp(val, "seeother") == 0) {
|
|
status = HTTP_SEE_OTHER;
|
|
}
|
|
else if (ap_isdigit(*val)) {
|
|
status = atoi(val);
|
|
}
|
|
if (!ap_is_HTTP_REDIRECT(status)) {
|
|
return "RewriteRule: invalid HTTP response code "
|
|
"for flag 'R'";
|
|
}
|
|
cfg->forced_responsecode = status;
|
|
}
|
|
}
|
|
else if ( strcasecmp(key, "last") == 0
|
|
|| strcasecmp(key, "L") == 0 ) {
|
|
cfg->flags |= RULEFLAG_LASTRULE;
|
|
}
|
|
else if ( strcasecmp(key, "next") == 0
|
|
|| strcasecmp(key, "N") == 0 ) {
|
|
cfg->flags |= RULEFLAG_NEWROUND;
|
|
}
|
|
else if ( strcasecmp(key, "chain") == 0
|
|
|| strcasecmp(key, "C") == 0 ) {
|
|
cfg->flags |= RULEFLAG_CHAIN;
|
|
}
|
|
else if ( strcasecmp(key, "type") == 0
|
|
|| strcasecmp(key, "T") == 0 ) {
|
|
cfg->forced_mimetype = ap_pstrdup(p, val);
|
|
ap_str_tolower(cfg->forced_mimetype);
|
|
}
|
|
else if ( strcasecmp(key, "env") == 0
|
|
|| strcasecmp(key, "E") == 0 ) {
|
|
for (i = 0; (cfg->env[i] != NULL) && (i < MAX_ENV_FLAGS); i++)
|
|
;
|
|
if (i < MAX_ENV_FLAGS) {
|
|
cfg->env[i] = ap_pstrdup(p, val);
|
|
cfg->env[i+1] = NULL;
|
|
}
|
|
else {
|
|
return "RewriteRule: too many environment flags 'E'";
|
|
}
|
|
}
|
|
else if ( strcasecmp(key, "nosubreq") == 0
|
|
|| strcasecmp(key, "NS") == 0 ) {
|
|
cfg->flags |= RULEFLAG_IGNOREONSUBREQ;
|
|
}
|
|
else if ( strcasecmp(key, "proxy") == 0
|
|
|| strcasecmp(key, "P") == 0 ) {
|
|
cfg->flags |= RULEFLAG_PROXY;
|
|
}
|
|
else if ( strcasecmp(key, "passthrough") == 0
|
|
|| strcasecmp(key, "PT") == 0 ) {
|
|
cfg->flags |= RULEFLAG_PASSTHROUGH;
|
|
}
|
|
else if ( strcasecmp(key, "skip") == 0
|
|
|| strcasecmp(key, "S") == 0 ) {
|
|
cfg->skip = atoi(val);
|
|
}
|
|
else if ( strcasecmp(key, "forbidden") == 0
|
|
|| strcasecmp(key, "F") == 0 ) {
|
|
cfg->flags |= RULEFLAG_FORBIDDEN;
|
|
}
|
|
else if ( strcasecmp(key, "gone") == 0
|
|
|| strcasecmp(key, "G") == 0 ) {
|
|
cfg->flags |= RULEFLAG_GONE;
|
|
}
|
|
else if ( strcasecmp(key, "qsappend") == 0
|
|
|| strcasecmp(key, "QSA") == 0 ) {
|
|
cfg->flags |= RULEFLAG_QSAPPEND;
|
|
}
|
|
else if ( strcasecmp(key, "nocase") == 0
|
|
|| strcasecmp(key, "NC") == 0 ) {
|
|
cfg->flags |= RULEFLAG_NOCASE;
|
|
}
|
|
else {
|
|
return ap_pstrcat(p, "RewriteRule: unknown flag '", key, "'\n", NULL);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/*
|
|
**
|
|
** Global Module Initialization
|
|
** [called from read_config() after all
|
|
** config commands were already called]
|
|
**
|
|
*/
|
|
|
|
static void init_module(ap_pool_t *p,
|
|
ap_pool_t *plog,
|
|
ap_pool_t *ptemp,
|
|
server_rec *s)
|
|
{
|
|
/* check if proxy module is available */
|
|
proxy_available = (ap_find_linked_module("mod_proxy.c") != NULL);
|
|
|
|
/* create the rewriting lockfiles in the parent */
|
|
if (ap_create_lock (&rewrite_log_lock, APR_MUTEX, APR_INTRAPROCESS,
|
|
NULL, NULL) != APR_SUCCESS)
|
|
exit(1); /* ugly but I can't log anything yet. This is what */
|
|
/* the pre-existing rewritelock_create code did. */
|
|
|
|
rewritelock_create(s, p);
|
|
ap_register_cleanup(p, (void *)s, rewritelock_remove, ap_null_cleanup);
|
|
|
|
/* step through the servers and
|
|
* - open each rewriting logfile
|
|
* - open the RewriteMap prg:xxx programs
|
|
*/
|
|
for (; s; s = s->next) {
|
|
open_rewritelog(s, p);
|
|
if (once_through > 0)
|
|
run_rewritemap_programs(s, p);
|
|
}
|
|
|
|
once_through++;
|
|
}
|
|
|
|
|
|
/*
|
|
**
|
|
** Per-Child Module Initialization
|
|
** [called after a child process is spawned]
|
|
**
|
|
*/
|
|
|
|
static void init_child(ap_pool_t *p, server_rec *s)
|
|
{
|
|
|
|
if (lockname != NULL && *(lockname) != '\0')
|
|
ap_child_init_lock (&rewrite_map_lock, lockname, p);
|
|
|
|
/* create the lookup cache */
|
|
cachep = init_cache(p);
|
|
}
|
|
|
|
|
|
/*
|
|
** +-------------------------------------------------------+
|
|
** | |
|
|
** | runtime hooks
|
|
** | |
|
|
** +-------------------------------------------------------+
|
|
*/
|
|
|
|
/*
|
|
**
|
|
** URI-to-filename hook
|
|
**
|
|
** [used for the rewriting engine triggered by
|
|
** the per-server 'RewriteRule' directives]
|
|
**
|
|
*/
|
|
|
|
static int hook_uri2file(request_rec *r)
|
|
{
|
|
void *sconf;
|
|
rewrite_server_conf *conf;
|
|
const char *var;
|
|
const char *thisserver;
|
|
char *thisport;
|
|
const char *thisurl;
|
|
char buf[512];
|
|
char docroot[512];
|
|
char *cp, *cp2;
|
|
const char *ccp;
|
|
struct stat finfo;
|
|
unsigned int port;
|
|
int n;
|
|
int l;
|
|
|
|
/*
|
|
* retrieve the config structures
|
|
*/
|
|
sconf = r->server->module_config;
|
|
conf = (rewrite_server_conf *)ap_get_module_config(sconf,
|
|
&rewrite_module);
|
|
|
|
/*
|
|
* only do something under runtime if the engine is really enabled,
|
|
* else return immediately!
|
|
*/
|
|
if (conf->state == ENGINE_DISABLED) {
|
|
return DECLINED;
|
|
}
|
|
|
|
/*
|
|
* check for the ugly API case of a virtual host section where no
|
|
* mod_rewrite directives exists. In this situation we became no chance
|
|
* by the API to setup our default per-server config so we have to
|
|
* on-the-fly assume we have the default config. But because the default
|
|
* config has a disabled rewriting engine we are lucky because can
|
|
* just stop operating now.
|
|
*/
|
|
if (conf->server != r->server) {
|
|
return DECLINED;
|
|
}
|
|
|
|
/*
|
|
* add the SCRIPT_URL variable to the env. this is a bit complicated
|
|
* due to the fact that apache uses subrequests and internal redirects
|
|
*/
|
|
|
|
if (r->main == NULL) {
|
|
var = ap_pstrcat(r->pool, "REDIRECT_", ENVVAR_SCRIPT_URL, NULL);
|
|
var = ap_table_get(r->subprocess_env, var);
|
|
if (var == NULL) {
|
|
ap_table_setn(r->subprocess_env, ENVVAR_SCRIPT_URL, r->uri);
|
|
}
|
|
else {
|
|
ap_table_setn(r->subprocess_env, ENVVAR_SCRIPT_URL, var);
|
|
}
|
|
}
|
|
else {
|
|
var = ap_table_get(r->main->subprocess_env, ENVVAR_SCRIPT_URL);
|
|
ap_table_setn(r->subprocess_env, ENVVAR_SCRIPT_URL, var);
|
|
}
|
|
|
|
/*
|
|
* create the SCRIPT_URI variable for the env
|
|
*/
|
|
|
|
/* add the canonical URI of this URL */
|
|
thisserver = ap_get_server_name(r);
|
|
port = ap_get_server_port(r);
|
|
if (ap_is_default_port(port, r)) {
|
|
thisport = "";
|
|
}
|
|
else {
|
|
ap_snprintf(buf, sizeof(buf), ":%u", port);
|
|
thisport = buf;
|
|
}
|
|
thisurl = ap_table_get(r->subprocess_env, ENVVAR_SCRIPT_URL);
|
|
|
|
/* set the variable */
|
|
var = ap_pstrcat(r->pool, ap_http_method(r), "://", thisserver, thisport,
|
|
thisurl, NULL);
|
|
ap_table_setn(r->subprocess_env, ENVVAR_SCRIPT_URI, var);
|
|
|
|
/* if filename was not initially set,
|
|
* we start with the requested URI
|
|
*/
|
|
if (r->filename == NULL) {
|
|
r->filename = ap_pstrdup(r->pool, r->uri);
|
|
rewritelog(r, 2, "init rewrite engine with requested uri %s",
|
|
r->filename);
|
|
}
|
|
|
|
/*
|
|
* now apply the rules ...
|
|
*/
|
|
if (apply_rewrite_list(r, conf->rewriterules, NULL)) {
|
|
|
|
if (strlen(r->filename) > 6 &&
|
|
strncmp(r->filename, "proxy:", 6) == 0) {
|
|
/* it should be go on as an internal proxy request */
|
|
|
|
/* check if the proxy module is enabled, so
|
|
* we can actually use it!
|
|
*/
|
|
if (!proxy_available) {
|
|
ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, 0, r,
|
|
"attempt to make remote request from mod_rewrite "
|
|
"without proxy enabled: %s", r->filename);
|
|
return FORBIDDEN;
|
|
}
|
|
|
|
/* make sure the QUERY_STRING and
|
|
* PATH_INFO parts get incorporated
|
|
*/
|
|
if (r->path_info != NULL) {
|
|
r->filename = ap_pstrcat(r->pool, r->filename,
|
|
r->path_info, NULL);
|
|
}
|
|
if (r->args != NULL &&
|
|
r->uri == r->unparsed_uri) {
|
|
/* see proxy_http:proxy_http_canon() */
|
|
r->filename = ap_pstrcat(r->pool, r->filename,
|
|
"?", r->args, NULL);
|
|
}
|
|
|
|
/* now make sure the request gets handled by the proxy handler */
|
|
r->proxyreq = 1;
|
|
r->handler = "proxy-server";
|
|
|
|
rewritelog(r, 1, "go-ahead with proxy request %s [OK]",
|
|
r->filename);
|
|
return OK;
|
|
}
|
|
else if ( (strlen(r->filename) > 7 &&
|
|
strncasecmp(r->filename, "http://", 7) == 0)
|
|
|| (strlen(r->filename) > 8 &&
|
|
strncasecmp(r->filename, "https://", 8) == 0)
|
|
|| (strlen(r->filename) > 9 &&
|
|
strncasecmp(r->filename, "gopher://", 9) == 0)
|
|
|| (strlen(r->filename) > 6 &&
|
|
strncasecmp(r->filename, "ftp://", 6) == 0)
|
|
|| (strlen(r->filename) > 5 &&
|
|
strncasecmp(r->filename, "ldap:", 5) == 0)
|
|
|| (strlen(r->filename) > 5 &&
|
|
strncasecmp(r->filename, "news:", 5) == 0)
|
|
|| (strlen(r->filename) > 7 &&
|
|
strncasecmp(r->filename, "mailto:", 7) == 0)) {
|
|
/* it was finally rewritten to a remote URL */
|
|
|
|
/* skip 'scheme:' */
|
|
for (cp = r->filename; *cp != ':' && *cp != '\0'; cp++)
|
|
;
|
|
/* skip '://' */
|
|
cp += 3;
|
|
/* skip host part */
|
|
for ( ; *cp != '/' && *cp != '\0'; cp++)
|
|
;
|
|
if (*cp != '\0') {
|
|
rewritelog(r, 1, "escaping %s for redirect", r->filename);
|
|
cp2 = ap_escape_uri(r->pool, cp);
|
|
*cp = '\0';
|
|
r->filename = ap_pstrcat(r->pool, r->filename, cp2, NULL);
|
|
}
|
|
|
|
/* append the QUERY_STRING part */
|
|
if (r->args != NULL) {
|
|
r->filename = ap_pstrcat(r->pool, r->filename, "?",
|
|
ap_escape_uri(r->pool, r->args), NULL);
|
|
}
|
|
|
|
/* determine HTTP redirect response code */
|
|
if (ap_is_HTTP_REDIRECT(r->status)) {
|
|
n = r->status;
|
|
r->status = HTTP_OK; /* make Apache kernel happy */
|
|
}
|
|
else {
|
|
n = REDIRECT;
|
|
}
|
|
|
|
/* now do the redirection */
|
|
ap_table_setn(r->headers_out, "Location", r->filename);
|
|
rewritelog(r, 1, "redirect to %s [REDIRECT/%d]", r->filename, n);
|
|
return n;
|
|
}
|
|
else if (strlen(r->filename) > 10 &&
|
|
strncmp(r->filename, "forbidden:", 10) == 0) {
|
|
/* This URLs is forced to be forbidden for the requester */
|
|
return FORBIDDEN;
|
|
}
|
|
else if (strlen(r->filename) > 5 &&
|
|
strncmp(r->filename, "gone:", 5) == 0) {
|
|
/* This URLs is forced to be gone */
|
|
return HTTP_GONE;
|
|
}
|
|
else if (strlen(r->filename) > 12 &&
|
|
strncmp(r->filename, "passthrough:", 12) == 0) {
|
|
/*
|
|
* Hack because of underpowered API: passing the current
|
|
* rewritten filename through to other URL-to-filename handlers
|
|
* just as it were the requested URL. This is to enable
|
|
* post-processing by mod_alias, etc. which always act on
|
|
* r->uri! The difference here is: We do not try to
|
|
* add the document root
|
|
*/
|
|
r->uri = ap_pstrdup(r->pool, r->filename+12);
|
|
return DECLINED;
|
|
}
|
|
else {
|
|
/* it was finally rewritten to a local path */
|
|
|
|
/* expand "/~user" prefix */
|
|
#if !defined(WIN32) && !defined(NETWARE)
|
|
r->filename = expand_tildepaths(r, r->filename);
|
|
#endif
|
|
rewritelog(r, 2, "local path result: %s", r->filename);
|
|
|
|
/* the filename has to start with a slash! */
|
|
if (r->filename[0] != '/') {
|
|
return BAD_REQUEST;
|
|
}
|
|
|
|
/* if there is no valid prefix, we have
|
|
* to emulate the translator from the core and
|
|
* prefix the filename with document_root
|
|
*
|
|
* NOTICE:
|
|
* We cannot leave out the prefix_stat because
|
|
* - when we always prefix with document_root
|
|
* then no absolute path can be created, e.g. via
|
|
* emulating a ScriptAlias directive, etc.
|
|
* - when we always NOT prefix with document_root
|
|
* then the files under document_root have to
|
|
* be references directly and document_root
|
|
* gets never used and will be a dummy parameter -
|
|
* this is also bad
|
|
*
|
|
* BUT:
|
|
* Under real Unix systems this is no problem,
|
|
* because we only do stat() on the first directory
|
|
* and this gets cached by the kernel for along time!
|
|
*/
|
|
n = prefix_stat(r->filename, &finfo);
|
|
if (n == 0) {
|
|
if ((ccp = ap_document_root(r)) != NULL) {
|
|
l = ap_cpystrn(docroot, ccp, sizeof(docroot)) - docroot;
|
|
|
|
/* always NOT have a trailing slash */
|
|
if (docroot[l-1] == '/') {
|
|
docroot[l-1] = '\0';
|
|
}
|
|
if (r->server->path
|
|
&& !strncmp(r->filename, r->server->path,
|
|
r->server->pathlen)) {
|
|
r->filename = ap_pstrcat(r->pool, docroot,
|
|
(r->filename +
|
|
r->server->pathlen), NULL);
|
|
}
|
|
else {
|
|
r->filename = ap_pstrcat(r->pool, docroot,
|
|
r->filename, NULL);
|
|
}
|
|
rewritelog(r, 2, "prefixed with document_root to %s",
|
|
r->filename);
|
|
}
|
|
}
|
|
|
|
rewritelog(r, 1, "go-ahead with %s [OK]", r->filename);
|
|
return OK;
|
|
}
|
|
}
|
|
else {
|
|
rewritelog(r, 1, "pass through %s", r->filename);
|
|
return DECLINED;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
**
|
|
** MIME-type hook
|
|
**
|
|
** [used to support the forced-MIME-type feature]
|
|
**
|
|
*/
|
|
|
|
static int hook_mimetype(request_rec *r)
|
|
{
|
|
const char *t;
|
|
|
|
/* now check if we have to force a MIME-type */
|
|
t = ap_table_get(r->notes, REWRITE_FORCED_MIMETYPE_NOTEVAR);
|
|
if (t == NULL) {
|
|
return DECLINED;
|
|
}
|
|
else {
|
|
rewritelog(r, 1, "force filename %s to have MIME-type '%s'",
|
|
r->filename, t);
|
|
r->content_type = t;
|
|
return OK;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
**
|
|
** Fixup hook
|
|
**
|
|
** [used for the rewriting engine triggered by
|
|
** the per-directory 'RewriteRule' directives]
|
|
**
|
|
*/
|
|
|
|
static int hook_fixup(request_rec *r)
|
|
{
|
|
rewrite_perdir_conf *dconf;
|
|
char *cp;
|
|
char *cp2;
|
|
const char *ccp;
|
|
char *prefix;
|
|
int l;
|
|
int n;
|
|
char *ofilename;
|
|
|
|
dconf = (rewrite_perdir_conf *)ap_get_module_config(r->per_dir_config,
|
|
&rewrite_module);
|
|
|
|
/* if there is no per-dir config we return immediately */
|
|
if (dconf == NULL) {
|
|
return DECLINED;
|
|
}
|
|
|
|
/* we shouldn't do anything in subrequests */
|
|
if (r->main != NULL) {
|
|
return DECLINED;
|
|
}
|
|
|
|
/* if there are no real (i.e. no RewriteRule directives!)
|
|
per-dir config of us, we return also immediately */
|
|
if (dconf->directory == NULL) {
|
|
return DECLINED;
|
|
}
|
|
|
|
/*
|
|
* only do something under runtime if the engine is really enabled,
|
|
* for this directory, else return immediately!
|
|
*/
|
|
if (!(ap_allow_options(r) & (OPT_SYM_LINKS | OPT_SYM_OWNER))) {
|
|
/* FollowSymLinks is mandatory! */
|
|
ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, 0, r,
|
|
"Options FollowSymLinks or SymLinksIfOwnerMatch is off "
|
|
"which implies that RewriteRule directive is forbidden: "
|
|
"%s", r->filename);
|
|
return FORBIDDEN;
|
|
}
|
|
else {
|
|
/* FollowSymLinks is given, but the user can
|
|
* still turn off the rewriting engine
|
|
*/
|
|
if (dconf->state == ENGINE_DISABLED) {
|
|
return DECLINED;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* remember the current filename before rewriting for later check
|
|
* to prevent deadlooping because of internal redirects
|
|
* on final URL/filename which can be equal to the inital one.
|
|
*/
|
|
ofilename = r->filename;
|
|
|
|
/*
|
|
* now apply the rules ...
|
|
*/
|
|
if (apply_rewrite_list(r, dconf->rewriterules, dconf->directory)) {
|
|
|
|
if (strlen(r->filename) > 6 &&
|
|
strncmp(r->filename, "proxy:", 6) == 0) {
|
|
/* it should go on as an internal proxy request */
|
|
|
|
/* make sure the QUERY_STRING and
|
|
* PATH_INFO parts get incorporated
|
|
* (r->path_info was already appended by the
|
|
* rewriting engine because of the per-dir context!)
|
|
*/
|
|
if (r->args != NULL) {
|
|
r->filename = ap_pstrcat(r->pool, r->filename,
|
|
"?", r->args, NULL);
|
|
}
|
|
|
|
/* now make sure the request gets handled by the proxy handler */
|
|
r->proxyreq = 1;
|
|
r->handler = "proxy-server";
|
|
|
|
rewritelog(r, 1, "[per-dir %s] go-ahead with proxy request "
|
|
"%s [OK]", dconf->directory, r->filename);
|
|
return OK;
|
|
}
|
|
else if ( (strlen(r->filename) > 7 &&
|
|
strncasecmp(r->filename, "http://", 7) == 0)
|
|
|| (strlen(r->filename) > 8 &&
|
|
strncasecmp(r->filename, "https://", 8) == 0)
|
|
|| (strlen(r->filename) > 9 &&
|
|
strncasecmp(r->filename, "gopher://", 9) == 0)
|
|
|| (strlen(r->filename) > 6 &&
|
|
strncasecmp(r->filename, "ftp://", 6) == 0)
|
|
|| (strlen(r->filename) > 5 &&
|
|
strncasecmp(r->filename, "ldap:", 5) == 0)
|
|
|| (strlen(r->filename) > 5 &&
|
|
strncasecmp(r->filename, "news:", 5) == 0)
|
|
|| (strlen(r->filename) > 7 &&
|
|
strncasecmp(r->filename, "mailto:", 7) == 0)) {
|
|
/* it was finally rewritten to a remote URL */
|
|
|
|
/* because we are in a per-dir context
|
|
* first try to replace the directory with its base-URL
|
|
* if there is a base-URL available
|
|
*/
|
|
if (dconf->baseurl != NULL) {
|
|
/* skip 'scheme:' */
|
|
for (cp = r->filename; *cp != ':' && *cp != '\0'; cp++)
|
|
;
|
|
/* skip '://' */
|
|
cp += 3;
|
|
if ((cp = strchr(cp, '/')) != NULL) {
|
|
rewritelog(r, 2,
|
|
"[per-dir %s] trying to replace "
|
|
"prefix %s with %s",
|
|
dconf->directory, dconf->directory,
|
|
dconf->baseurl);
|
|
cp2 = subst_prefix_path(r, cp, dconf->directory,
|
|
dconf->baseurl);
|
|
if (strcmp(cp2, cp) != 0) {
|
|
*cp = '\0';
|
|
r->filename = ap_pstrcat(r->pool, r->filename,
|
|
cp2, NULL);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* now prepare the redirect... */
|
|
|
|
/* skip 'scheme:' */
|
|
for (cp = r->filename; *cp != ':' && *cp != '\0'; cp++)
|
|
;
|
|
/* skip '://' */
|
|
cp += 3;
|
|
/* skip host part */
|
|
for ( ; *cp != '/' && *cp != '\0'; cp++)
|
|
;
|
|
if (*cp != '\0') {
|
|
rewritelog(r, 1, "[per-dir %s] escaping %s for redirect",
|
|
dconf->directory, r->filename);
|
|
cp2 = ap_escape_uri(r->pool, cp);
|
|
*cp = '\0';
|
|
r->filename = ap_pstrcat(r->pool, r->filename, cp2, NULL);
|
|
}
|
|
|
|
/* append the QUERY_STRING part */
|
|
if (r->args != NULL) {
|
|
r->filename = ap_pstrcat(r->pool, r->filename, "?",
|
|
ap_escape_uri(r->pool, r->args), NULL);
|
|
}
|
|
|
|
/* determine HTTP redirect response code */
|
|
if (ap_is_HTTP_REDIRECT(r->status)) {
|
|
n = r->status;
|
|
r->status = HTTP_OK; /* make Apache kernel happy */
|
|
}
|
|
else {
|
|
n = REDIRECT;
|
|
}
|
|
|
|
/* now do the redirection */
|
|
ap_table_setn(r->headers_out, "Location", r->filename);
|
|
rewritelog(r, 1, "[per-dir %s] redirect to %s [REDIRECT/%d]",
|
|
dconf->directory, r->filename, n);
|
|
return n;
|
|
}
|
|
else if (strlen(r->filename) > 10 &&
|
|
strncmp(r->filename, "forbidden:", 10) == 0) {
|
|
/* This URL is forced to be forbidden for the requester */
|
|
return FORBIDDEN;
|
|
}
|
|
else if (strlen(r->filename) > 5 &&
|
|
strncmp(r->filename, "gone:", 5) == 0) {
|
|
/* This URL is forced to be gone */
|
|
return HTTP_GONE;
|
|
}
|
|
else {
|
|
/* it was finally rewritten to a local path */
|
|
|
|
/* if someone used the PASSTHROUGH flag in per-dir
|
|
* context we just ignore it. It is only useful
|
|
* in per-server context
|
|
*/
|
|
if (strlen(r->filename) > 12 &&
|
|
strncmp(r->filename, "passthrough:", 12) == 0) {
|
|
r->filename = ap_pstrdup(r->pool, r->filename+12);
|
|
}
|
|
|
|
/* the filename has to start with a slash! */
|
|
if (r->filename[0] != '/') {
|
|
return BAD_REQUEST;
|
|
}
|
|
|
|
/* Check for deadlooping:
|
|
* At this point we KNOW that at least one rewriting
|
|
* rule was applied, but when the resulting URL is
|
|
* the same as the initial URL, we are not allowed to
|
|
* use the following internal redirection stuff because
|
|
* this would lead to a deadloop.
|
|
*/
|
|
if (strcmp(r->filename, ofilename) == 0) {
|
|
rewritelog(r, 1, "[per-dir %s] initial URL equal rewritten "
|
|
"URL: %s [IGNORING REWRITE]",
|
|
dconf->directory, r->filename);
|
|
return OK;
|
|
}
|
|
|
|
/* if there is a valid base-URL then substitute
|
|
* the per-dir prefix with this base-URL if the
|
|
* current filename still is inside this per-dir
|
|
* context. If not then treat the result as a
|
|
* plain URL
|
|
*/
|
|
if (dconf->baseurl != NULL) {
|
|
rewritelog(r, 2,
|
|
"[per-dir %s] trying to replace prefix %s with %s",
|
|
dconf->directory, dconf->directory, dconf->baseurl);
|
|
r->filename = subst_prefix_path(r, r->filename,
|
|
dconf->directory,
|
|
dconf->baseurl);
|
|
}
|
|
else {
|
|
/* if no explicit base-URL exists we assume
|
|
* that the directory prefix is also a valid URL
|
|
* for this webserver and only try to remove the
|
|
* document_root if it is prefix
|
|
*/
|
|
if ((ccp = ap_document_root(r)) != NULL) {
|
|
prefix = ap_pstrdup(r->pool, ccp);
|
|
/* always NOT have a trailing slash */
|
|
l = strlen(prefix);
|
|
if (prefix[l-1] == '/') {
|
|
prefix[l-1] = '\0';
|
|
l--;
|
|
}
|
|
if (strncmp(r->filename, prefix, l) == 0) {
|
|
rewritelog(r, 2,
|
|
"[per-dir %s] strip document_root "
|
|
"prefix: %s -> %s",
|
|
dconf->directory, r->filename,
|
|
r->filename+l);
|
|
r->filename = ap_pstrdup(r->pool, r->filename+l);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* now initiate the internal redirect */
|
|
rewritelog(r, 1, "[per-dir %s] internal redirect with %s "
|
|
"[INTERNAL REDIRECT]", dconf->directory, r->filename);
|
|
r->filename = ap_pstrcat(r->pool, "redirect:", r->filename, NULL);
|
|
r->handler = "redirect-handler";
|
|
return OK;
|
|
}
|
|
}
|
|
else {
|
|
rewritelog(r, 1, "[per-dir %s] pass through %s",
|
|
dconf->directory, r->filename);
|
|
return DECLINED;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
**
|
|
** Content-Handlers
|
|
**
|
|
** [used for redirect support]
|
|
**
|
|
*/
|
|
|
|
static int handler_redirect(request_rec *r)
|
|
{
|
|
/* just make sure that we are really meant! */
|
|
if (strncmp(r->filename, "redirect:", 9) != 0) {
|
|
return DECLINED;
|
|
}
|
|
|
|
/* now do the internal redirect */
|
|
ap_internal_redirect(ap_pstrcat(r->pool, r->filename+9,
|
|
r->args ? "?" : NULL, r->args, NULL), r);
|
|
|
|
/* and return gracefully */
|
|
return OK;
|
|
}
|
|
|
|
|
|
/*
|
|
** +-------------------------------------------------------+
|
|
** | |
|
|
** | the rewriting engine
|
|
** | |
|
|
** +-------------------------------------------------------+
|
|
*/
|
|
|
|
/*
|
|
* Apply a complete rule set,
|
|
* i.e. a list of rewrite rules
|
|
*/
|
|
static int apply_rewrite_list(request_rec *r, ap_array_header_t *rewriterules,
|
|
char *perdir)
|
|
{
|
|
rewriterule_entry *entries;
|
|
rewriterule_entry *p;
|
|
int i;
|
|
int changed;
|
|
int rc;
|
|
int s;
|
|
|
|
/*
|
|
* Iterate over all existing rules
|
|
*/
|
|
entries = (rewriterule_entry *)rewriterules->elts;
|
|
changed = 0;
|
|
loop:
|
|
for (i = 0; i < rewriterules->nelts; i++) {
|
|
p = &entries[i];
|
|
|
|
/*
|
|
* Ignore this rule on subrequests if we are explicitly
|
|
* asked to do so or this is a proxy-throughput or a
|
|
* forced redirect rule.
|
|
*/
|
|
if (r->main != NULL &&
|
|
(p->flags & RULEFLAG_IGNOREONSUBREQ ||
|
|
p->flags & RULEFLAG_PROXY ||
|
|
p->flags & RULEFLAG_FORCEREDIRECT )) {
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* Apply the current rule.
|
|
*/
|
|
rc = apply_rewrite_rule(r, p, perdir);
|
|
if (rc) {
|
|
/*
|
|
* Indicate a change if this was not a match-only rule.
|
|
*/
|
|
if (rc != 2) {
|
|
changed = 1;
|
|
}
|
|
|
|
/*
|
|
* Pass-Through Feature (`RewriteRule .. .. [PT]'):
|
|
* Because the Apache 1.x API is very limited we
|
|
* need this hack to pass the rewritten URL to other
|
|
* modules like mod_alias, mod_userdir, etc.
|
|
*/
|
|
if (p->flags & RULEFLAG_PASSTHROUGH) {
|
|
rewritelog(r, 2, "forcing '%s' to get passed through "
|
|
"to next API URI-to-filename handler", r->filename);
|
|
r->filename = ap_pstrcat(r->pool, "passthrough:",
|
|
r->filename, NULL);
|
|
changed = 1;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Rule has the "forbidden" flag set which means that
|
|
* we stop processing and indicate this to the caller.
|
|
*/
|
|
if (p->flags & RULEFLAG_FORBIDDEN) {
|
|
rewritelog(r, 2, "forcing '%s' to be forbidden", r->filename);
|
|
r->filename = ap_pstrcat(r->pool, "forbidden:",
|
|
r->filename, NULL);
|
|
changed = 1;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Rule has the "gone" flag set which means that
|
|
* we stop processing and indicate this to the caller.
|
|
*/
|
|
if (p->flags & RULEFLAG_GONE) {
|
|
rewritelog(r, 2, "forcing '%s' to be gone", r->filename);
|
|
r->filename = ap_pstrcat(r->pool, "gone:", r->filename, NULL);
|
|
changed = 1;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Stop processing also on proxy pass-through and
|
|
* last-rule and new-round flags.
|
|
*/
|
|
if (p->flags & RULEFLAG_PROXY) {
|
|
break;
|
|
}
|
|
if (p->flags & RULEFLAG_LASTRULE) {
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* On "new-round" flag we just start from the top of
|
|
* the rewriting ruleset again.
|
|
*/
|
|
if (p->flags & RULEFLAG_NEWROUND) {
|
|
goto loop;
|
|
}
|
|
|
|
/*
|
|
* If we are forced to skip N next rules, do it now.
|
|
*/
|
|
if (p->skip > 0) {
|
|
s = p->skip;
|
|
while ( i < rewriterules->nelts
|
|
&& s > 0) {
|
|
i++;
|
|
p = &entries[i];
|
|
s--;
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
/*
|
|
* If current rule is chained with next rule(s),
|
|
* skip all this next rule(s)
|
|
*/
|
|
while ( i < rewriterules->nelts
|
|
&& p->flags & RULEFLAG_CHAIN) {
|
|
i++;
|
|
p = &entries[i];
|
|
}
|
|
}
|
|
}
|
|
return changed;
|
|
}
|
|
|
|
/*
|
|
* Apply a single(!) rewrite rule
|
|
*/
|
|
static int apply_rewrite_rule(request_rec *r, rewriterule_entry *p,
|
|
char *perdir)
|
|
{
|
|
char *uri;
|
|
char *output;
|
|
const char *vary;
|
|
char newuri[MAX_STRING_LEN];
|
|
char env[MAX_STRING_LEN];
|
|
regex_t *regexp;
|
|
regmatch_t regmatch[MAX_NMATCH];
|
|
backrefinfo *briRR = NULL;
|
|
backrefinfo *briRC = NULL;
|
|
int prefixstrip;
|
|
int failed;
|
|
ap_array_header_t *rewriteconds;
|
|
rewritecond_entry *conds;
|
|
rewritecond_entry *c;
|
|
int i;
|
|
int rc;
|
|
|
|
/*
|
|
* Initialisation
|
|
*/
|
|
uri = r->filename;
|
|
regexp = p->regexp;
|
|
output = p->output;
|
|
|
|
/*
|
|
* Add (perhaps splitted away) PATH_INFO postfix to URL to
|
|
* make sure we really match against the complete URL.
|
|
*/
|
|
if (perdir != NULL && r->path_info != NULL && r->path_info[0] != '\0') {
|
|
rewritelog(r, 3, "[per-dir %s] add path info postfix: %s -> %s%s",
|
|
perdir, uri, uri, r->path_info);
|
|
uri = ap_pstrcat(r->pool, uri, r->path_info, NULL);
|
|
}
|
|
|
|
/*
|
|
* On per-directory context (.htaccess) strip the location
|
|
* prefix from the URL to make sure patterns apply only to
|
|
* the local part. Additionally indicate this special
|
|
* threatment in the logfile.
|
|
*/
|
|
prefixstrip = 0;
|
|
if (perdir != NULL) {
|
|
if ( strlen(uri) >= strlen(perdir)
|
|
&& strncmp(uri, perdir, strlen(perdir)) == 0) {
|
|
rewritelog(r, 3, "[per-dir %s] strip per-dir prefix: %s -> %s",
|
|
perdir, uri, uri+strlen(perdir));
|
|
uri = uri+strlen(perdir);
|
|
prefixstrip = 1;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Try to match the URI against the RewriteRule pattern
|
|
* and exit immeddiately if it didn't apply.
|
|
*/
|
|
if (perdir == NULL) {
|
|
rewritelog(r, 3, "applying pattern '%s' to uri '%s'",
|
|
p->pattern, uri);
|
|
}
|
|
else {
|
|
rewritelog(r, 3, "[per-dir %s] applying pattern '%s' to uri '%s'",
|
|
perdir, p->pattern, uri);
|
|
}
|
|
rc = (ap_regexec(regexp, uri, regexp->re_nsub+1, regmatch, 0) == 0);
|
|
if (! (( rc && !(p->flags & RULEFLAG_NOTMATCH)) ||
|
|
(!rc && (p->flags & RULEFLAG_NOTMATCH)) ) ) {
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Else create the RewriteRule `regsubinfo' structure which
|
|
* holds the substitution information.
|
|
*/
|
|
briRR = (backrefinfo *)ap_palloc(r->pool, sizeof(backrefinfo));
|
|
if (!rc && (p->flags & RULEFLAG_NOTMATCH)) {
|
|
/* empty info on negative patterns */
|
|
briRR->source = "";
|
|
briRR->nsub = 0;
|
|
}
|
|
else {
|
|
briRR->source = ap_pstrdup(r->pool, uri);
|
|
briRR->nsub = regexp->re_nsub;
|
|
memcpy((void *)(briRR->regmatch), (void *)(regmatch),
|
|
sizeof(regmatch));
|
|
}
|
|
|
|
/*
|
|
* Initiallally create the RewriteCond backrefinfo with
|
|
* empty backrefinfo, i.e. not subst parts
|
|
* (this one is adjusted inside apply_rewrite_cond() later!!)
|
|
*/
|
|
briRC = (backrefinfo *)ap_pcalloc(r->pool, sizeof(backrefinfo));
|
|
briRC->source = "";
|
|
briRC->nsub = 0;
|
|
|
|
/*
|
|
* Ok, we already know the pattern has matched, but we now
|
|
* additionally have to check for all existing preconditions
|
|
* (RewriteCond) which have to be also true. We do this at
|
|
* this very late stage to avoid unnessesary checks which
|
|
* would slow down the rewriting engine!!
|
|
*/
|
|
rewriteconds = p->rewriteconds;
|
|
conds = (rewritecond_entry *)rewriteconds->elts;
|
|
failed = 0;
|
|
for (i = 0; i < rewriteconds->nelts; i++) {
|
|
c = &conds[i];
|
|
rc = apply_rewrite_cond(r, c, perdir, briRR, briRC);
|
|
if (c->flags & CONDFLAG_ORNEXT) {
|
|
/*
|
|
* The "OR" case
|
|
*/
|
|
if (rc == 0) {
|
|
/* One condition is false, but another can be
|
|
* still true, so we have to continue...
|
|
*/
|
|
ap_table_unset(r->notes, VARY_KEY_THIS);
|
|
continue;
|
|
}
|
|
else {
|
|
/* One true condition is enough in "or" case, so
|
|
* skip the other conditions which are "ornext"
|
|
* chained
|
|
*/
|
|
while ( i < rewriteconds->nelts
|
|
&& c->flags & CONDFLAG_ORNEXT) {
|
|
i++;
|
|
c = &conds[i];
|
|
}
|
|
continue;
|
|
}
|
|
}
|
|
else {
|
|
/*
|
|
* The "AND" case, i.e. no "or" flag,
|
|
* so a single failure means total failure.
|
|
*/
|
|
if (rc == 0) {
|
|
failed = 1;
|
|
break;
|
|
}
|
|
}
|
|
vary = ap_table_get(r->notes, VARY_KEY_THIS);
|
|
if (vary != NULL) {
|
|
ap_table_merge(r->notes, VARY_KEY, vary);
|
|
ap_table_unset(r->notes, VARY_KEY_THIS);
|
|
}
|
|
}
|
|
/* if any condition fails the complete rule fails */
|
|
if (failed) {
|
|
ap_table_unset(r->notes, VARY_KEY);
|
|
ap_table_unset(r->notes, VARY_KEY_THIS);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Regardless of what we do next, we've found a match. Check to see
|
|
* if any of the request header fields were involved, and add them
|
|
* to the Vary field of the response.
|
|
*/
|
|
if ((vary = ap_table_get(r->notes, VARY_KEY)) != NULL) {
|
|
ap_table_merge(r->headers_out, "Vary", vary);
|
|
ap_table_unset(r->notes, VARY_KEY);
|
|
}
|
|
|
|
/*
|
|
* If this is a pure matching rule (`RewriteRule <pat> -')
|
|
* we stop processing and return immediately. The only thing
|
|
* we have not to forget are the environment variables
|
|
* (`RewriteRule <pat> - [E=...]')
|
|
*/
|
|
if (strcmp(output, "-") == 0) {
|
|
for (i = 0; p->env[i] != NULL; i++) {
|
|
/* 1. take the string */
|
|
ap_cpystrn(env, p->env[i], sizeof(env));
|
|
/* 2. expand $N (i.e. backrefs to RewriteRule pattern) */
|
|
expand_backref_inbuffer(r->pool, env, sizeof(env), briRR, '$');
|
|
/* 3. expand %N (i.e. backrefs to latest RewriteCond pattern) */
|
|
expand_backref_inbuffer(r->pool, env, sizeof(env), briRC, '%');
|
|
/* 4. expand %{...} (i.e. variables) */
|
|
expand_variables_inbuffer(r, env, sizeof(env));
|
|
/* 5. expand ${...} (RewriteMap lookups) */
|
|
expand_map_lookups(r, env, sizeof(env));
|
|
/* and add the variable to Apache's structures */
|
|
add_env_variable(r, env);
|
|
}
|
|
if (p->forced_mimetype != NULL) {
|
|
if (perdir == NULL) {
|
|
/* In the per-server context we can force the MIME-type
|
|
* the correct way by notifying our MIME-type hook handler
|
|
* to do the job when the MIME-type API stage is reached.
|
|
*/
|
|
rewritelog(r, 2, "remember %s to have MIME-type '%s'",
|
|
r->filename, p->forced_mimetype);
|
|
ap_table_setn(r->notes, REWRITE_FORCED_MIMETYPE_NOTEVAR,
|
|
p->forced_mimetype);
|
|
}
|
|
else {
|
|
/* In per-directory context we operate in the Fixup API hook
|
|
* which is after the MIME-type hook, so our MIME-type handler
|
|
* has no chance to set r->content_type. And because we are
|
|
* in the situation where no substitution takes place no
|
|
* sub-request will happen (which could solve the
|
|
* restriction). As a workaround we do it ourself now
|
|
* immediately although this is not strictly API-conforming.
|
|
* But it's the only chance we have...
|
|
*/
|
|
rewritelog(r, 1, "[per-dir %s] force %s to have MIME-type "
|
|
"'%s'", perdir, r->filename, p->forced_mimetype);
|
|
r->content_type = p->forced_mimetype;
|
|
}
|
|
}
|
|
return 2;
|
|
}
|
|
|
|
/*
|
|
* Ok, now we finally know all patterns have matched and
|
|
* that there is something to replace, so we create the
|
|
* substitution URL string in `newuri'.
|
|
*/
|
|
/* 1. take the output string */
|
|
ap_cpystrn(newuri, output, sizeof(newuri));
|
|
/* 2. expand $N (i.e. backrefs to RewriteRule pattern) */
|
|
expand_backref_inbuffer(r->pool, newuri, sizeof(newuri), briRR, '$');
|
|
/* 3. expand %N (i.e. backrefs to latest RewriteCond pattern) */
|
|
expand_backref_inbuffer(r->pool, newuri, sizeof(newuri), briRC, '%');
|
|
/* 4. expand %{...} (i.e. variables) */
|
|
expand_variables_inbuffer(r, newuri, sizeof(newuri));
|
|
/* 5. expand ${...} (RewriteMap lookups) */
|
|
expand_map_lookups(r, newuri, sizeof(newuri));
|
|
/* and log the result... */
|
|
if (perdir == NULL) {
|
|
rewritelog(r, 2, "rewrite %s -> %s", uri, newuri);
|
|
}
|
|
else {
|
|
rewritelog(r, 2, "[per-dir %s] rewrite %s -> %s", perdir, uri, newuri);
|
|
}
|
|
|
|
/*
|
|
* Additionally do expansion for the environment variable
|
|
* strings (`RewriteRule .. .. [E=<string>]').
|
|
*/
|
|
for (i = 0; p->env[i] != NULL; i++) {
|
|
/* 1. take the string */
|
|
ap_cpystrn(env, p->env[i], sizeof(env));
|
|
/* 2. expand $N (i.e. backrefs to RewriteRule pattern) */
|
|
expand_backref_inbuffer(r->pool, env, sizeof(env), briRR, '$');
|
|
/* 3. expand %N (i.e. backrefs to latest RewriteCond pattern) */
|
|
expand_backref_inbuffer(r->pool, env, sizeof(env), briRC, '%');
|
|
/* 4. expand %{...} (i.e. variables) */
|
|
expand_variables_inbuffer(r, env, sizeof(env));
|
|
/* 5. expand ${...} (RewriteMap lookups) */
|
|
expand_map_lookups(r, env, sizeof(env));
|
|
/* and add the variable to Apache's structures */
|
|
add_env_variable(r, env);
|
|
}
|
|
|
|
/*
|
|
* Now replace API's knowledge of the current URI:
|
|
* Replace r->filename with the new URI string and split out
|
|
* an on-the-fly generated QUERY_STRING part into r->args
|
|
*/
|
|
r->filename = ap_pstrdup(r->pool, newuri);
|
|
splitout_queryargs(r, p->flags & RULEFLAG_QSAPPEND);
|
|
|
|
/*
|
|
* Again add the previously stripped per-directory location
|
|
* prefix if the new URI is not a new one for this
|
|
* location, i.e. if it's not starting with either a slash
|
|
* or a fully qualified URL scheme.
|
|
*/
|
|
i = strlen(r->filename);
|
|
if ( prefixstrip
|
|
&& !( r->filename[0] == '/'
|
|
|| ( (i > 7 && strncasecmp(r->filename, "http://", 7) == 0)
|
|
|| (i > 8 && strncasecmp(r->filename, "https://", 8) == 0)
|
|
|| (i > 9 && strncasecmp(r->filename, "gopher://", 9) == 0)
|
|
|| (i > 6 && strncasecmp(r->filename, "ftp://", 6) == 0)
|
|
|| (i > 5 && strncasecmp(r->filename, "ldap:", 5) == 0)
|
|
|| (i > 5 && strncasecmp(r->filename, "news:", 5) == 0)
|
|
|| (i > 7 && strncasecmp(r->filename, "mailto:", 7) == 0)))) {
|
|
rewritelog(r, 3, "[per-dir %s] add per-dir prefix: %s -> %s%s",
|
|
perdir, r->filename, perdir, r->filename);
|
|
r->filename = ap_pstrcat(r->pool, perdir, r->filename, NULL);
|
|
}
|
|
|
|
/*
|
|
* If this rule is forced for proxy throughput
|
|
* (`RewriteRule ... ... [P]') then emulate mod_proxy's
|
|
* URL-to-filename handler to be sure mod_proxy is triggered
|
|
* for this URL later in the Apache API. But make sure it is
|
|
* a fully-qualified URL. (If not it is qualified with
|
|
* ourself).
|
|
*/
|
|
if (p->flags & RULEFLAG_PROXY) {
|
|
fully_qualify_uri(r);
|
|
if (perdir == NULL) {
|
|
rewritelog(r, 2, "forcing proxy-throughput with %s", r->filename);
|
|
}
|
|
else {
|
|
rewritelog(r, 2, "[per-dir %s] forcing proxy-throughput with %s",
|
|
perdir, r->filename);
|
|
}
|
|
r->filename = ap_pstrcat(r->pool, "proxy:", r->filename, NULL);
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* If this rule is explicitly forced for HTTP redirection
|
|
* (`RewriteRule .. .. [R]') then force an external HTTP
|
|
* redirect. But make sure it is a fully-qualified URL. (If
|
|
* not it is qualified with ourself).
|
|
*/
|
|
if (p->flags & RULEFLAG_FORCEREDIRECT) {
|
|
fully_qualify_uri(r);
|
|
if (perdir == NULL) {
|
|
rewritelog(r, 2,
|
|
"explicitly forcing redirect with %s", r->filename);
|
|
}
|
|
else {
|
|
rewritelog(r, 2,
|
|
"[per-dir %s] explicitly forcing redirect with %s",
|
|
perdir, r->filename);
|
|
}
|
|
r->status = p->forced_responsecode;
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Special Rewriting Feature: Self-Reduction
|
|
* We reduce the URL by stripping a possible
|
|
* http[s]://<ourhost>[:<port>] prefix, i.e. a prefix which
|
|
* corresponds to ourself. This is to simplify rewrite maps
|
|
* and to avoid recursion, etc. When this prefix is not a
|
|
* coincidence then the user has to use [R] explicitly (see
|
|
* above).
|
|
*/
|
|
reduce_uri(r);
|
|
|
|
/*
|
|
* If this rule is still implicitly forced for HTTP
|
|
* redirection (`RewriteRule .. <scheme>://...') then
|
|
* directly force an external HTTP redirect.
|
|
*/
|
|
i = strlen(r->filename);
|
|
if ( (i > 7 && strncasecmp(r->filename, "http://", 7) == 0)
|
|
|| (i > 8 && strncasecmp(r->filename, "https://", 8) == 0)
|
|
|| (i > 9 && strncasecmp(r->filename, "gopher://", 9) == 0)
|
|
|| (i > 6 && strncasecmp(r->filename, "ftp://", 6) == 0)
|
|
|| (i > 5 && strncasecmp(r->filename, "ldap:", 5) == 0)
|
|
|| (i > 5 && strncasecmp(r->filename, "news:", 5) == 0)
|
|
|| (i > 7 && strncasecmp(r->filename, "mailto:", 7) == 0) ) {
|
|
if (perdir == NULL) {
|
|
rewritelog(r, 2,
|
|
"implicitly forcing redirect (rc=%d) with %s",
|
|
p->forced_responsecode, r->filename);
|
|
}
|
|
else {
|
|
rewritelog(r, 2, "[per-dir %s] implicitly forcing redirect "
|
|
"(rc=%d) with %s", perdir, p->forced_responsecode,
|
|
r->filename);
|
|
}
|
|
r->status = p->forced_responsecode;
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Now we are sure it is not a fully qualified URL. But
|
|
* there is still one special case left: A local rewrite in
|
|
* per-directory context, i.e. a substitution URL which does
|
|
* not start with a slash. Here we add again the initially
|
|
* stripped per-directory prefix.
|
|
*/
|
|
if (prefixstrip && r->filename[0] != '/') {
|
|
rewritelog(r, 3, "[per-dir %s] add per-dir prefix: %s -> %s%s",
|
|
perdir, r->filename, perdir, r->filename);
|
|
r->filename = ap_pstrcat(r->pool, perdir, r->filename, NULL);
|
|
}
|
|
|
|
/*
|
|
* Finally we had to remember if a MIME-type should be
|
|
* forced for this URL (`RewriteRule .. .. [T=<type>]')
|
|
* Later in the API processing phase this is forced by our
|
|
* MIME API-hook function. This time its no problem even for
|
|
* the per-directory context (where the MIME-type hook was
|
|
* already processed) because a sub-request happens ;-)
|
|
*/
|
|
if (p->forced_mimetype != NULL) {
|
|
ap_table_setn(r->notes, REWRITE_FORCED_MIMETYPE_NOTEVAR,
|
|
p->forced_mimetype);
|
|
if (perdir == NULL) {
|
|
rewritelog(r, 2, "remember %s to have MIME-type '%s'",
|
|
r->filename, p->forced_mimetype);
|
|
}
|
|
else {
|
|
rewritelog(r, 2,
|
|
"[per-dir %s] remember %s to have MIME-type '%s'",
|
|
perdir, r->filename, p->forced_mimetype);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Puuhhhhhhhh... WHAT COMPLICATED STUFF ;_)
|
|
* But now we're done for this particular rule.
|
|
*/
|
|
return 1;
|
|
}
|
|
|
|
static int apply_rewrite_cond(request_rec *r, rewritecond_entry *p,
|
|
char *perdir, backrefinfo *briRR,
|
|
backrefinfo *briRC)
|
|
{
|
|
char input[MAX_STRING_LEN];
|
|
struct stat sb;
|
|
request_rec *rsub;
|
|
regmatch_t regmatch[MAX_NMATCH];
|
|
int rc;
|
|
|
|
/*
|
|
* Construct the string we match against
|
|
*/
|
|
|
|
/* 1. take the string */
|
|
ap_cpystrn(input, p->input, sizeof(input));
|
|
/* 2. expand $N (i.e. backrefs to RewriteRule pattern) */
|
|
expand_backref_inbuffer(r->pool, input, sizeof(input), briRR, '$');
|
|
/* 3. expand %N (i.e. backrefs to latest RewriteCond pattern) */
|
|
expand_backref_inbuffer(r->pool, input, sizeof(input), briRC, '%');
|
|
/* 4. expand %{...} (i.e. variables) */
|
|
expand_variables_inbuffer(r, input, sizeof(input));
|
|
/* 5. expand ${...} (RewriteMap lookups) */
|
|
expand_map_lookups(r, input, sizeof(input));
|
|
|
|
/*
|
|
* Apply the patterns
|
|
*/
|
|
|
|
rc = 0;
|
|
if (strcmp(p->pattern, "-f") == 0) {
|
|
if (stat(input, &sb) == 0) {
|
|
if (S_ISREG(sb.st_mode)) {
|
|
rc = 1;
|
|
}
|
|
}
|
|
}
|
|
else if (strcmp(p->pattern, "-s") == 0) {
|
|
if (stat(input, &sb) == 0) {
|
|
if (S_ISREG(sb.st_mode) && sb.st_size > 0) {
|
|
rc = 1;
|
|
}
|
|
}
|
|
}
|
|
else if (strcmp(p->pattern, "-l") == 0) {
|
|
#if !defined(OS2) && !defined(WIN32)
|
|
if (lstat(input, &sb) == 0) {
|
|
if (S_ISLNK(sb.st_mode)) {
|
|
rc = 1;
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
else if (strcmp(p->pattern, "-d") == 0) {
|
|
if (stat(input, &sb) == 0) {
|
|
if (S_ISDIR(sb.st_mode)) {
|
|
rc = 1;
|
|
}
|
|
}
|
|
}
|
|
else if (strcmp(p->pattern, "-U") == 0) {
|
|
/* avoid infinite subrequest recursion */
|
|
if (strlen(input) > 0 /* nonempty path, and */
|
|
&& ( r->main == NULL /* - either not in a subrequest */
|
|
|| ( r->main->uri != NULL /* - or in a subrequest... */
|
|
&& r->uri != NULL /* ...and URIs aren't NULL... */
|
|
/* ...and sub/main URIs differ */
|
|
&& strcmp(r->main->uri, r->uri) != 0) ) ) {
|
|
|
|
/* run a URI-based subrequest */
|
|
rsub = ap_sub_req_lookup_uri(input, r);
|
|
|
|
/* URI exists for any result up to 3xx, redirects allowed */
|
|
if (rsub->status < 400)
|
|
rc = 1;
|
|
|
|
/* log it */
|
|
rewritelog(r, 5, "RewriteCond URI (-U) check: "
|
|
"path=%s -> status=%d", input, rsub->status);
|
|
|
|
/* cleanup by destroying the subrequest */
|
|
ap_destroy_sub_req(rsub);
|
|
}
|
|
}
|
|
else if (strcmp(p->pattern, "-F") == 0) {
|
|
/* avoid infinite subrequest recursion */
|
|
if (strlen(input) > 0 /* nonempty path, and */
|
|
&& ( r->main == NULL /* - either not in a subrequest */
|
|
|| ( r->main->uri != NULL /* - or in a subrequest... */
|
|
&& r->uri != NULL /* ...and URIs aren't NULL... */
|
|
/* ...and sub/main URIs differ */
|
|
&& strcmp(r->main->uri, r->uri) != 0) ) ) {
|
|
|
|
/* process a file-based subrequest:
|
|
* this differs from -U in that no path translation is done.
|
|
*/
|
|
rsub = ap_sub_req_lookup_file(input, r);
|
|
|
|
/* file exists for any result up to 2xx, no redirects */
|
|
if (rsub->status < 300 &&
|
|
/* double-check that file exists since default result is 200 */
|
|
stat(rsub->filename, &sb) == 0) {
|
|
rc = 1;
|
|
}
|
|
|
|
/* log it */
|
|
rewritelog(r, 5, "RewriteCond file (-F) check: path=%s "
|
|
"-> file=%s status=%d", input, rsub->filename,
|
|
rsub->status);
|
|
|
|
/* cleanup by destroying the subrequest */
|
|
ap_destroy_sub_req(rsub);
|
|
}
|
|
}
|
|
else if (strlen(p->pattern) > 1 && *(p->pattern) == '>') {
|
|
rc = (compare_lexicography(input, p->pattern+1) == 1 ? 1 : 0);
|
|
}
|
|
else if (strlen(p->pattern) > 1 && *(p->pattern) == '<') {
|
|
rc = (compare_lexicography(input, p->pattern+1) == -1 ? 1 : 0);
|
|
}
|
|
else if (strlen(p->pattern) > 1 && *(p->pattern) == '=') {
|
|
if (strcmp(p->pattern+1, "\"\"") == 0) {
|
|
rc = (*input == '\0');
|
|
}
|
|
else {
|
|
rc = (strcmp(input, p->pattern+1) == 0 ? 1 : 0);
|
|
}
|
|
}
|
|
else {
|
|
/* it is really a regexp pattern, so apply it */
|
|
rc = (ap_regexec(p->regexp, input,
|
|
p->regexp->re_nsub+1, regmatch,0) == 0);
|
|
|
|
/* if it isn't a negated pattern and really matched
|
|
we update the passed-through regex subst info structure */
|
|
if (rc && !(p->flags & CONDFLAG_NOTMATCH)) {
|
|
briRC->source = ap_pstrdup(r->pool, input);
|
|
briRC->nsub = p->regexp->re_nsub;
|
|
memcpy((void *)(briRC->regmatch), (void *)(regmatch),
|
|
sizeof(regmatch));
|
|
}
|
|
}
|
|
|
|
/* if this is a non-matching regexp, just negate the result */
|
|
if (p->flags & CONDFLAG_NOTMATCH) {
|
|
rc = !rc;
|
|
}
|
|
|
|
rewritelog(r, 4, "RewriteCond: input='%s' pattern='%s%s' => %s",
|
|
input, (p->flags & CONDFLAG_NOTMATCH ? "!" : ""),
|
|
p->pattern, rc ? "matched" : "not-matched");
|
|
|
|
/* end just return the result */
|
|
return rc;
|
|
}
|
|
|
|
|
|
/*
|
|
** +-------------------------------------------------------+
|
|
** | |
|
|
** | URL transformation functions
|
|
** | |
|
|
** +-------------------------------------------------------+
|
|
*/
|
|
|
|
/*
|
|
**
|
|
** split out a QUERY_STRING part from
|
|
** the current URI string
|
|
**
|
|
*/
|
|
|
|
static void splitout_queryargs(request_rec *r, int qsappend)
|
|
{
|
|
char *q;
|
|
char *olduri;
|
|
|
|
q = strchr(r->filename, '?');
|
|
if (q != NULL) {
|
|
olduri = ap_pstrdup(r->pool, r->filename);
|
|
*q++ = '\0';
|
|
if (qsappend) {
|
|
r->args = ap_pstrcat(r->pool, q, "&", r->args, NULL);
|
|
}
|
|
else {
|
|
r->args = ap_pstrdup(r->pool, q);
|
|
}
|
|
if (strlen(r->args) == 0) {
|
|
r->args = NULL;
|
|
rewritelog(r, 3, "split uri=%s -> uri=%s, args=<none>", olduri,
|
|
r->filename);
|
|
}
|
|
else {
|
|
if (r->args[strlen(r->args)-1] == '&') {
|
|
r->args[strlen(r->args)-1] = '\0';
|
|
}
|
|
rewritelog(r, 3, "split uri=%s -> uri=%s, args=%s", olduri,
|
|
r->filename, r->args);
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
|
|
/*
|
|
**
|
|
** strip 'http[s]://ourhost/' from URI
|
|
**
|
|
*/
|
|
|
|
static void reduce_uri(request_rec *r)
|
|
{
|
|
char *cp;
|
|
unsigned short port;
|
|
char *portp;
|
|
char *hostp;
|
|
char *url;
|
|
char c;
|
|
char host[LONG_STRING_LEN];
|
|
char buf[MAX_STRING_LEN];
|
|
char *olduri;
|
|
int l;
|
|
|
|
cp = (char *)ap_http_method(r);
|
|
l = strlen(cp);
|
|
if ( strlen(r->filename) > l+3
|
|
&& strncasecmp(r->filename, cp, l) == 0
|
|
&& r->filename[l] == ':'
|
|
&& r->filename[l+1] == '/'
|
|
&& r->filename[l+2] == '/' ) {
|
|
/* there was really a rewrite to a remote path */
|
|
|
|
olduri = ap_pstrdup(r->pool, r->filename); /* save for logging */
|
|
|
|
/* cut the hostname and port out of the URI */
|
|
ap_cpystrn(buf, r->filename+(l+3), sizeof(buf));
|
|
hostp = buf;
|
|
for (cp = hostp; *cp != '\0' && *cp != '/' && *cp != ':'; cp++)
|
|
;
|
|
if (*cp == ':') {
|
|
/* set host */
|
|
*cp++ = '\0';
|
|
ap_cpystrn(host, hostp, sizeof(host));
|
|
/* set port */
|
|
portp = cp;
|
|
for (; *cp != '\0' && *cp != '/'; cp++)
|
|
;
|
|
c = *cp;
|
|
*cp = '\0';
|
|
port = atoi(portp);
|
|
*cp = c;
|
|
/* set remaining url */
|
|
url = cp;
|
|
}
|
|
else if (*cp == '/') {
|
|
/* set host */
|
|
*cp = '\0';
|
|
ap_cpystrn(host, hostp, sizeof(host));
|
|
*cp = '/';
|
|
/* set port */
|
|
port = ap_default_port(r);
|
|
/* set remaining url */
|
|
url = cp;
|
|
}
|
|
else {
|
|
/* set host */
|
|
ap_cpystrn(host, hostp, sizeof(host));
|
|
/* set port */
|
|
port = ap_default_port(r);
|
|
/* set remaining url */
|
|
url = "/";
|
|
}
|
|
|
|
/* now check whether we could reduce it to a local path... */
|
|
if (ap_matches_request_vhost(r, host, port)) {
|
|
/* this is our host, so only the URL remains */
|
|
r->filename = ap_pstrdup(r->pool, url);
|
|
rewritelog(r, 3, "reduce %s -> %s", olduri, r->filename);
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
|
|
/*
|
|
**
|
|
** add 'http[s]://ourhost[:ourport]/' to URI
|
|
** if URI is still not fully qualified
|
|
**
|
|
*/
|
|
|
|
static void fully_qualify_uri(request_rec *r)
|
|
{
|
|
int i;
|
|
char buf[32];
|
|
const char *thisserver;
|
|
char *thisport;
|
|
int port;
|
|
|
|
i = strlen(r->filename);
|
|
if (!( (i > 7 && strncasecmp(r->filename, "http://", 7) == 0)
|
|
|| (i > 8 && strncasecmp(r->filename, "https://", 8) == 0)
|
|
|| (i > 9 && strncasecmp(r->filename, "gopher://", 9) == 0)
|
|
|| (i > 6 && strncasecmp(r->filename, "ftp://", 6) == 0)
|
|
|| (i > 5 && strncasecmp(r->filename, "ldap:", 5) == 0)
|
|
|| (i > 5 && strncasecmp(r->filename, "news:", 5) == 0)
|
|
|| (i > 7 && strncasecmp(r->filename, "mailto:", 7) == 0))) {
|
|
|
|
thisserver = ap_get_server_name(r);
|
|
port = ap_get_server_port(r);
|
|
if (ap_is_default_port(port,r)) {
|
|
thisport = "";
|
|
}
|
|
else {
|
|
ap_snprintf(buf, sizeof(buf), ":%u", port);
|
|
thisport = buf;
|
|
}
|
|
|
|
if (r->filename[0] == '/') {
|
|
r->filename = ap_psprintf(r->pool, "%s://%s%s%s",
|
|
ap_http_method(r), thisserver,
|
|
thisport, r->filename);
|
|
}
|
|
else {
|
|
r->filename = ap_psprintf(r->pool, "%s://%s%s/%s",
|
|
ap_http_method(r), thisserver,
|
|
thisport, r->filename);
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
|
|
/*
|
|
**
|
|
** Expand the %0-%9 or $0-$9 regex backreferences
|
|
**
|
|
*/
|
|
|
|
static void expand_backref_inbuffer(ap_pool_t *p, char *buf, int nbuf,
|
|
backrefinfo *bri, char c)
|
|
{
|
|
register int i;
|
|
|
|
/* protect existing $N and & backrefs and replace <c>N with $N backrefs */
|
|
for (i = 0; buf[i] != '\0' && i < nbuf; i++) {
|
|
if (buf[i] == '\\' && (buf[i+1] != '\0' && i < (nbuf-1))) {
|
|
i++; /* protect next */
|
|
}
|
|
else if (buf[i] == '&') {
|
|
buf[i] = '\001';
|
|
}
|
|
else if (c != '$' && buf[i] == '$' && (buf[i+1] >= '0' && buf[i+1] <= '9')) {
|
|
buf[i] = '\002';
|
|
i++; /* speedup */
|
|
}
|
|
else if (buf[i] == c && (buf[i+1] >= '0' && buf[i+1] <= '9')) {
|
|
buf[i] = '$';
|
|
i++; /* speedup */
|
|
}
|
|
}
|
|
|
|
/* now apply the standard regex substitution function */
|
|
ap_cpystrn(buf, ap_pregsub(p, buf, bri->source,
|
|
bri->nsub+1, bri->regmatch), nbuf);
|
|
|
|
/* restore the original $N and & backrefs */
|
|
for (i = 0; buf[i] != '\0' && i < nbuf; i++) {
|
|
if (buf[i] == '\001') {
|
|
buf[i] = '&';
|
|
}
|
|
else if (buf[i] == '\002') {
|
|
buf[i] = '$';
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
**
|
|
** Expand tilde-paths (/~user) through
|
|
** Unix /etc/passwd database information
|
|
**
|
|
*/
|
|
#if !defined(WIN32) && !defined(NETWARE)
|
|
static char *expand_tildepaths(request_rec *r, char *uri)
|
|
{
|
|
char user[LONG_STRING_LEN];
|
|
struct passwd *pw;
|
|
char *newuri;
|
|
int i, j;
|
|
|
|
newuri = uri;
|
|
if (uri != NULL && strlen(uri) > 2 && uri[0] == '/' && uri[1] == '~') {
|
|
/* cut out the username */
|
|
for (j = 0, i = 2; j < sizeof(user)-1
|
|
&& uri[i] != '\0'
|
|
&& uri[i] != '/' ; ) {
|
|
user[j++] = uri[i++];
|
|
}
|
|
user[j] = '\0';
|
|
|
|
/* lookup username in systems passwd file */
|
|
if ((pw = getpwnam(user)) != NULL) {
|
|
/* ok, user was found, so expand the ~user string */
|
|
if (uri[i] != '\0') {
|
|
/* ~user/anything... has to be expanded */
|
|
if (pw->pw_dir[strlen(pw->pw_dir)-1] == '/') {
|
|
pw->pw_dir[strlen(pw->pw_dir)-1] = '\0';
|
|
}
|
|
newuri = ap_pstrcat(r->pool, pw->pw_dir, uri+i, NULL);
|
|
}
|
|
else {
|
|
/* only ~user has to be expanded */
|
|
newuri = ap_pstrdup(r->pool, pw->pw_dir);
|
|
}
|
|
}
|
|
}
|
|
return newuri;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
**
|
|
** mapfile expansion support
|
|
** i.e. expansion of MAP lookup directives
|
|
** ${<mapname>:<key>} in RewriteRule rhs
|
|
**
|
|
*/
|
|
|
|
#define limit_length(n) (n > LONG_STRING_LEN-1 ? LONG_STRING_LEN-1 : n)
|
|
|
|
static void expand_map_lookups(request_rec *r, char *uri, int uri_len)
|
|
{
|
|
char newuri[MAX_STRING_LEN];
|
|
char *cpI;
|
|
char *cpIE;
|
|
char *cpO;
|
|
char *cpT;
|
|
char *cpT2;
|
|
char mapname[LONG_STRING_LEN];
|
|
char mapkey[LONG_STRING_LEN];
|
|
char defaultvalue[LONG_STRING_LEN];
|
|
int n;
|
|
|
|
cpI = uri;
|
|
cpIE = cpI+strlen(cpI);
|
|
cpO = newuri;
|
|
while (cpI < cpIE) {
|
|
if (cpI+6 < cpIE && strncmp(cpI, "${", 2) == 0) {
|
|
/* missing delimiter -> take it as plain text */
|
|
if ( strchr(cpI+2, ':') == NULL
|
|
|| strchr(cpI+2, '}') == NULL) {
|
|
memcpy(cpO, cpI, 2);
|
|
cpO += 2;
|
|
cpI += 2;
|
|
continue;
|
|
}
|
|
cpI += 2;
|
|
|
|
cpT = strchr(cpI, ':');
|
|
n = cpT-cpI;
|
|
memcpy(mapname, cpI, limit_length(n));
|
|
mapname[limit_length(n)] = '\0';
|
|
cpI += n+1;
|
|
|
|
cpT2 = strchr(cpI, '|');
|
|
cpT = strchr(cpI, '}');
|
|
if (cpT2 != NULL && cpT2 < cpT) {
|
|
n = cpT2-cpI;
|
|
memcpy(mapkey, cpI, limit_length(n));
|
|
mapkey[limit_length(n)] = '\0';
|
|
cpI += n+1;
|
|
|
|
n = cpT-cpI;
|
|
memcpy(defaultvalue, cpI, limit_length(n));
|
|
defaultvalue[limit_length(n)] = '\0';
|
|
cpI += n+1;
|
|
}
|
|
else {
|
|
n = cpT-cpI;
|
|
memcpy(mapkey, cpI, limit_length(n));
|
|
mapkey[limit_length(n)] = '\0';
|
|
cpI += n+1;
|
|
|
|
defaultvalue[0] = '\0';
|
|
}
|
|
|
|
cpT = lookup_map(r, mapname, mapkey);
|
|
if (cpT != NULL) {
|
|
n = strlen(cpT);
|
|
if (cpO + n >= newuri + sizeof(newuri)) {
|
|
ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR,
|
|
0, r, "insufficient space in "
|
|
"expand_map_lookups, aborting");
|
|
return;
|
|
}
|
|
memcpy(cpO, cpT, n);
|
|
cpO += n;
|
|
}
|
|
else {
|
|
n = strlen(defaultvalue);
|
|
if (cpO + n >= newuri + sizeof(newuri)) {
|
|
ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR,
|
|
0, r, "insufficient space in "
|
|
"expand_map_lookups, aborting");
|
|
return;
|
|
}
|
|
memcpy(cpO, defaultvalue, n);
|
|
cpO += n;
|
|
}
|
|
}
|
|
else {
|
|
cpT = strstr(cpI, "${");
|
|
if (cpT == NULL)
|
|
cpT = cpI+strlen(cpI);
|
|
n = cpT-cpI;
|
|
if (cpO + n >= newuri + sizeof(newuri)) {
|
|
ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR,
|
|
0, r, "insufficient space in "
|
|
"expand_map_lookups, aborting");
|
|
return;
|
|
}
|
|
memcpy(cpO, cpI, n);
|
|
cpO += n;
|
|
cpI += n;
|
|
}
|
|
}
|
|
*cpO = '\0';
|
|
ap_cpystrn(uri, newuri, uri_len);
|
|
return;
|
|
}
|
|
|
|
#undef limit_length
|
|
|
|
|
|
|
|
/*
|
|
** +-------------------------------------------------------+
|
|
** | |
|
|
** | DBM hashfile support
|
|
** | |
|
|
** +-------------------------------------------------------+
|
|
*/
|
|
|
|
|
|
static char *lookup_map(request_rec *r, char *name, char *key)
|
|
{
|
|
void *sconf;
|
|
rewrite_server_conf *conf;
|
|
ap_array_header_t *rewritemaps;
|
|
rewritemap_entry *entries;
|
|
rewritemap_entry *s;
|
|
char *value;
|
|
struct stat st;
|
|
int i;
|
|
|
|
/* get map configuration */
|
|
sconf = r->server->module_config;
|
|
conf = (rewrite_server_conf *)ap_get_module_config(sconf,
|
|
&rewrite_module);
|
|
rewritemaps = conf->rewritemaps;
|
|
|
|
entries = (rewritemap_entry *)rewritemaps->elts;
|
|
for (i = 0; i < rewritemaps->nelts; i++) {
|
|
s = &entries[i];
|
|
if (strcmp(s->name, name) == 0) {
|
|
if (s->type == MAPTYPE_TXT) {
|
|
if (stat(s->checkfile, &st) == -1) {
|
|
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
|
|
"mod_rewrite: can't access text RewriteMap "
|
|
"file %s", s->checkfile);
|
|
rewritelog(r, 1, "can't open RewriteMap file, "
|
|
"see error log");
|
|
return NULL;
|
|
}
|
|
value = get_cache_string(cachep, s->name, CACHEMODE_TS,
|
|
st.st_mtime, key);
|
|
if (value == NULL) {
|
|
rewritelog(r, 6, "cache lookup FAILED, forcing new "
|
|
"map lookup");
|
|
if ((value =
|
|
lookup_map_txtfile(r, s->datafile, key)) != NULL) {
|
|
rewritelog(r, 5, "map lookup OK: map=%s key=%s[txt] "
|
|
"-> val=%s", s->name, key, value);
|
|
set_cache_string(cachep, s->name, CACHEMODE_TS,
|
|
st.st_mtime, key, value);
|
|
return value;
|
|
}
|
|
else {
|
|
rewritelog(r, 5, "map lookup FAILED: map=%s[txt] "
|
|
"key=%s", s->name, key);
|
|
set_cache_string(cachep, s->name, CACHEMODE_TS,
|
|
st.st_mtime, key, "");
|
|
return NULL;
|
|
}
|
|
}
|
|
else {
|
|
rewritelog(r, 5, "cache lookup OK: map=%s[txt] key=%s "
|
|
"-> val=%s", s->name, key, value);
|
|
return value[0] != '\0' ? value : NULL;
|
|
}
|
|
}
|
|
else if (s->type == MAPTYPE_DBM) {
|
|
#ifndef NO_DBM_REWRITEMAP
|
|
if (stat(s->checkfile, &st) == -1) {
|
|
ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
|
|
"mod_rewrite: can't access DBM RewriteMap "
|
|
"file %s", s->checkfile);
|
|
rewritelog(r, 1, "can't open DBM RewriteMap file, "
|
|
"see error log");
|
|
return NULL;
|
|
}
|
|
value = get_cache_string(cachep, s->name, CACHEMODE_TS,
|
|
st.st_mtime, key);
|
|
if (value == NULL) {
|
|
rewritelog(r, 6,
|
|
"cache lookup FAILED, forcing new map lookup");
|
|
if ((value =
|
|
lookup_map_dbmfile(r, s->datafile, key)) != NULL) {
|
|
rewritelog(r, 5, "map lookup OK: map=%s[dbm] key=%s "
|
|
"-> val=%s", s->name, key, value);
|
|
set_cache_string(cachep, s->name, CACHEMODE_TS,
|
|
st.st_mtime, key, value);
|
|
return value;
|
|
}
|
|
else {
|
|
rewritelog(r, 5, "map lookup FAILED: map=%s[dbm] "
|
|
"key=%s", s->name, key);
|
|
set_cache_string(cachep, s->name, CACHEMODE_TS,
|
|
st.st_mtime, key, "");
|
|
return NULL;
|
|
}
|
|
}
|
|
else {
|
|
rewritelog(r, 5, "cache lookup OK: map=%s[dbm] key=%s "
|
|
"-> val=%s", s->name, key, value);
|
|
return value[0] != '\0' ? value : NULL;
|
|
}
|
|
#else
|
|
return NULL;
|
|
#endif
|
|
}
|
|
else if (s->type == MAPTYPE_PRG) {
|
|
if ((value =
|
|
lookup_map_program(r, s->fpin, s->fpout, key)) != NULL) {
|
|
rewritelog(r, 5, "map lookup OK: map=%s key=%s -> val=%s",
|
|
s->name, key, value);
|
|
return value;
|
|
}
|
|
else {
|
|
rewritelog(r, 5, "map lookup FAILED: map=%s key=%s",
|
|
s->name, key);
|
|
}
|
|
}
|
|
else if (s->type == MAPTYPE_INT) {
|
|
if ((value = lookup_map_internal(r, s->func, key)) != NULL) {
|
|
rewritelog(r, 5, "map lookup OK: map=%s key=%s -> val=%s",
|
|
s->name, key, value);
|
|
return value;
|
|
}
|
|
else {
|
|
rewritelog(r, 5, "map lookup FAILED: map=%s key=%s",
|
|
s->name, key);
|
|
}
|
|
}
|
|
else if (s->type == MAPTYPE_RND) {
|
|
if (stat(s->checkfile, &st) == -1) {
|
|
ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
|
|
"mod_rewrite: can't access text RewriteMap "
|
|
"file %s", s->checkfile);
|
|
rewritelog(r, 1, "can't open RewriteMap file, "
|
|
"see error log");
|
|
return NULL;
|
|
}
|
|
value = get_cache_string(cachep, s->name, CACHEMODE_TS,
|
|
st.st_mtime, key);
|
|
if (value == NULL) {
|
|
rewritelog(r, 6, "cache lookup FAILED, forcing new "
|
|
"map lookup");
|
|
if ((value =
|
|
lookup_map_txtfile(r, s->datafile, key)) != NULL) {
|
|
rewritelog(r, 5, "map lookup OK: map=%s key=%s[txt] "
|
|
"-> val=%s", s->name, key, value);
|
|
set_cache_string(cachep, s->name, CACHEMODE_TS,
|
|
st.st_mtime, key, value);
|
|
}
|
|
else {
|
|
rewritelog(r, 5, "map lookup FAILED: map=%s[txt] "
|
|
"key=%s", s->name, key);
|
|
set_cache_string(cachep, s->name, CACHEMODE_TS,
|
|
st.st_mtime, key, "");
|
|
return NULL;
|
|
}
|
|
}
|
|
else {
|
|
rewritelog(r, 5, "cache lookup OK: map=%s[txt] key=%s "
|
|
"-> val=%s", s->name, key, value);
|
|
}
|
|
if (value[0] != '\0') {
|
|
value = select_random_value_part(r, value);
|
|
rewritelog(r, 5, "randomly choosen the subvalue `%s'", value);
|
|
}
|
|
else {
|
|
value = NULL;
|
|
}
|
|
return value;
|
|
}
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static char *lookup_map_txtfile(request_rec *r, char *file, char *key)
|
|
{
|
|
ap_file_t *fp = NULL;
|
|
ap_status_t rc;
|
|
char line[1024];
|
|
char *value = NULL;
|
|
char *cpT;
|
|
size_t skip;
|
|
char *curkey;
|
|
char *curval;
|
|
|
|
rc = ap_open(&fp, file, APR_READ, APR_OS_DEFAULT, r->pool);
|
|
if (rc != APR_SUCCESS) {
|
|
return NULL;
|
|
}
|
|
|
|
while (ap_fgets(line, sizeof(line), fp) == APR_SUCCESS) {
|
|
if (line[0] == '#')
|
|
continue; /* ignore comments */
|
|
cpT = line;
|
|
curkey = cpT;
|
|
skip = strcspn(cpT," \t\r\n");
|
|
if (skip == 0)
|
|
continue; /* ignore lines that start with a space, tab, CR, or LF */
|
|
cpT += skip;
|
|
*cpT = '\0';
|
|
if (strcmp(curkey, key) != 0)
|
|
continue; /* key does not match... */
|
|
|
|
/* found a matching key; now extract and return the value */
|
|
++cpT;
|
|
skip = strspn(cpT, " \t\r\n");
|
|
cpT += skip;
|
|
curval = cpT;
|
|
skip = strcspn(cpT, " \t\r\n");
|
|
if (skip == 0)
|
|
continue; /* no value... */
|
|
cpT += skip;
|
|
*cpT = '\0';
|
|
value = ap_pstrdup(r->pool, curval);
|
|
break;
|
|
}
|
|
ap_close(fp);
|
|
return value;
|
|
}
|
|
|
|
#ifndef NO_DBM_REWRITEMAP
|
|
static char *lookup_map_dbmfile(request_rec *r, char *file, char *key)
|
|
{
|
|
DBM *dbmfp = NULL;
|
|
datum dbmkey;
|
|
datum dbmval;
|
|
char *value = NULL;
|
|
char buf[MAX_STRING_LEN];
|
|
|
|
dbmkey.dptr = key;
|
|
dbmkey.dsize = strlen(key);
|
|
if ((dbmfp = dbm_open(file, O_RDONLY, 0666)) != NULL) {
|
|
dbmval = dbm_fetch(dbmfp, dbmkey);
|
|
if (dbmval.dptr != NULL) {
|
|
memcpy(buf, dbmval.dptr,
|
|
dbmval.dsize < sizeof(buf)-1 ?
|
|
dbmval.dsize : sizeof(buf)-1 );
|
|
buf[dbmval.dsize] = '\0';
|
|
value = ap_pstrdup(r->pool, buf);
|
|
}
|
|
dbm_close(dbmfp);
|
|
}
|
|
return value;
|
|
}
|
|
#endif
|
|
|
|
static char *lookup_map_program(request_rec *r, ap_file_t *fpin,
|
|
ap_file_t *fpout, char *key)
|
|
{
|
|
char buf[LONG_STRING_LEN];
|
|
char c;
|
|
int i;
|
|
ap_ssize_t nbytes;
|
|
|
|
#ifndef NO_WRITEV
|
|
struct iovec iova[2];
|
|
ap_size_t niov;
|
|
#endif
|
|
|
|
/* when `RewriteEngine off' was used in the per-server
|
|
* context then the rewritemap-programs were not spawned.
|
|
* In this case using such a map (usually in per-dir context)
|
|
* is useless because it is not available.
|
|
*/
|
|
if (fpin == NULL || fpout == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
/* take the lock */
|
|
|
|
ap_lock(rewrite_map_lock);
|
|
|
|
/* write out the request key */
|
|
#ifdef NO_WRITEV
|
|
nbytes = strlen(key);
|
|
ap_write(fpin, key, &nbytes);
|
|
nbytes = 1;
|
|
ap_write(fpin, "\n", &nbytes);
|
|
#else
|
|
iova[0].iov_base = key;
|
|
iova[0].iov_len = strlen(key);
|
|
iova[1].iov_base = "\n";
|
|
iova[1].iov_len = 1;
|
|
|
|
niov = 2;
|
|
ap_writev(fpin, iova, niov, &nbytes);
|
|
#endif
|
|
|
|
/* read in the response value */
|
|
i = 0;
|
|
nbytes = 1;
|
|
ap_read(fpout, &c, &nbytes);
|
|
while (nbytes == 1 && (i < LONG_STRING_LEN-1)) {
|
|
if (c == '\n') {
|
|
break;
|
|
}
|
|
buf[i++] = c;
|
|
|
|
ap_read(fpout, &c, &nbytes);
|
|
}
|
|
buf[i] = '\0';
|
|
|
|
/* give the lock back */
|
|
ap_unlock(rewrite_map_lock);
|
|
|
|
if (strcasecmp(buf, "NULL") == 0) {
|
|
return NULL;
|
|
}
|
|
else {
|
|
return ap_pstrdup(r->pool, buf);
|
|
}
|
|
}
|
|
|
|
static char *lookup_map_internal(request_rec *r,
|
|
char *(*func)(request_rec *, char *),
|
|
char *key)
|
|
{
|
|
/* currently we just let the function convert
|
|
the key to a corresponding value */
|
|
return func(r, key);
|
|
}
|
|
|
|
static char *rewrite_mapfunc_toupper(request_rec *r, char *key)
|
|
{
|
|
char *value, *cp;
|
|
|
|
for (cp = value = ap_pstrdup(r->pool, key); cp != NULL && *cp != '\0';
|
|
cp++) {
|
|
*cp = ap_toupper(*cp);
|
|
}
|
|
return value;
|
|
}
|
|
|
|
static char *rewrite_mapfunc_tolower(request_rec *r, char *key)
|
|
{
|
|
char *value, *cp;
|
|
|
|
for (cp = value = ap_pstrdup(r->pool, key); cp != NULL && *cp != '\0';
|
|
cp++) {
|
|
*cp = ap_tolower(*cp);
|
|
}
|
|
return value;
|
|
}
|
|
|
|
static char *rewrite_mapfunc_escape(request_rec *r, char *key)
|
|
{
|
|
char *value;
|
|
|
|
value = ap_escape_uri(r->pool, key);
|
|
return value;
|
|
}
|
|
|
|
static char *rewrite_mapfunc_unescape(request_rec *r, char *key)
|
|
{
|
|
char *value;
|
|
|
|
value = ap_pstrdup(r->pool, key);
|
|
ap_unescape_url(value);
|
|
return value;
|
|
}
|
|
|
|
static int rewrite_rand_init_done = 0;
|
|
|
|
static void rewrite_rand_init(void)
|
|
{
|
|
if (!rewrite_rand_init_done) {
|
|
srand((unsigned)(getpid()));
|
|
rewrite_rand_init_done = 1;
|
|
}
|
|
return;
|
|
}
|
|
|
|
static int rewrite_rand(int l, int h)
|
|
{
|
|
rewrite_rand_init();
|
|
|
|
/* Get [0,1) and then scale to the appropriate range. Note that using
|
|
* a floating point value ensures that we use all bits of the rand()
|
|
* result. Doing an integer modulus would only use the lower-order bits
|
|
* which may not be as uniformly random.
|
|
*/
|
|
return ((double)(rand() % RAND_MAX) / RAND_MAX) * (h - l + 1) + l;
|
|
}
|
|
|
|
static char *select_random_value_part(request_rec *r, char *value)
|
|
{
|
|
char *buf;
|
|
int n, i, k;
|
|
|
|
/* count number of distinct values */
|
|
for (n = 1, i = 0; value[i] != '\0'; i++) {
|
|
if (value[i] == '|') {
|
|
n++;
|
|
}
|
|
}
|
|
|
|
/* when only one value we have no option to choose */
|
|
if (n == 1) {
|
|
return value;
|
|
}
|
|
|
|
/* else randomly select one */
|
|
k = rewrite_rand(1, n);
|
|
|
|
/* and grep it out */
|
|
for (n = 1, i = 0; value[i] != '\0'; i++) {
|
|
if (n == k) {
|
|
break;
|
|
}
|
|
if (value[i] == '|') {
|
|
n++;
|
|
}
|
|
}
|
|
buf = ap_pstrdup(r->pool, &value[i]);
|
|
for (i = 0; buf[i] != '\0' && buf[i] != '|'; i++)
|
|
;
|
|
buf[i] = '\0';
|
|
return buf;
|
|
}
|
|
|
|
|
|
/*
|
|
** +-------------------------------------------------------+
|
|
** | |
|
|
** | rewriting logfile support
|
|
** | |
|
|
** +-------------------------------------------------------+
|
|
*/
|
|
|
|
|
|
static void open_rewritelog(server_rec *s, ap_pool_t *p)
|
|
{
|
|
rewrite_server_conf *conf;
|
|
const char *fname;
|
|
ap_status_t rc;
|
|
piped_log *pl;
|
|
int rewritelog_flags = ( APR_WRITE | APR_APPEND | APR_CREATE );
|
|
mode_t rewritelog_mode = ( APR_UREAD | APR_UWRITE | APR_GREAD | APR_WREAD );
|
|
|
|
conf = ap_get_module_config(s->module_config, &rewrite_module);
|
|
|
|
if (conf->rewritelogfile == NULL) {
|
|
return;
|
|
}
|
|
if (*(conf->rewritelogfile) == '\0') {
|
|
return;
|
|
}
|
|
if (conf->rewritelogfp != NULL) {
|
|
return; /* virtual log shared w/ main server */
|
|
}
|
|
|
|
fname = ap_server_root_relative(p, conf->rewritelogfile);
|
|
|
|
if (*conf->rewritelogfile == '|') {
|
|
if ((pl = ap_open_piped_log(p, conf->rewritelogfile+1)) == NULL) {
|
|
ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
|
|
"mod_rewrite: could not open reliable pipe "
|
|
"to RewriteLog filter %s", conf->rewritelogfile+1);
|
|
exit(1);
|
|
}
|
|
conf->rewritelogfp = ap_piped_log_write_fd(pl);
|
|
}
|
|
else if (*conf->rewritelogfile != '\0') {
|
|
rc = ap_open(&conf->rewritelogfp, fname, rewritelog_flags, rewritelog_mode, p);
|
|
if (rc != APR_SUCCESS) {
|
|
ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
|
|
"mod_rewrite: could not open RewriteLog "
|
|
"file %s", fname);
|
|
exit(1);
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
static void rewritelog(request_rec *r, int level, const char *text, ...)
|
|
{
|
|
rewrite_server_conf *conf;
|
|
conn_rec *conn;
|
|
char *str1;
|
|
char str2[512];
|
|
char str3[1024];
|
|
char type[20];
|
|
char redir[20];
|
|
va_list ap;
|
|
int i;
|
|
ap_ssize_t nbytes;
|
|
request_rec *req;
|
|
char *ruser;
|
|
const char *rhost;
|
|
|
|
va_start(ap, text);
|
|
conf = ap_get_module_config(r->server->module_config, &rewrite_module);
|
|
conn = r->connection;
|
|
|
|
if (conf->rewritelogfp == NULL) {
|
|
return;
|
|
}
|
|
if (conf->rewritelogfile == NULL) {
|
|
return;
|
|
}
|
|
if (*(conf->rewritelogfile) == '\0') {
|
|
return;
|
|
}
|
|
|
|
if (level > conf->rewriteloglevel) {
|
|
return;
|
|
}
|
|
|
|
if (r->user == NULL) {
|
|
ruser = "-";
|
|
}
|
|
else if (strlen(r->user) != 0) {
|
|
ruser = r->user;
|
|
}
|
|
else {
|
|
ruser = "\"\"";
|
|
}
|
|
|
|
rhost = ap_get_remote_host(conn, r->server->module_config,
|
|
REMOTE_NOLOOKUP);
|
|
if (rhost == NULL) {
|
|
rhost = "UNKNOWN-HOST";
|
|
}
|
|
|
|
str1 = ap_pstrcat(r->pool, rhost, " ",
|
|
(conn->remote_logname != NULL ?
|
|
conn->remote_logname : "-"), " ",
|
|
ruser, NULL);
|
|
ap_vsnprintf(str2, sizeof(str2), text, ap);
|
|
|
|
if (r->main == NULL) {
|
|
strcpy(type, "initial");
|
|
}
|
|
else {
|
|
strcpy(type, "subreq");
|
|
}
|
|
|
|
for (i = 0, req = r; req->prev != NULL; req = req->prev) {
|
|
i++;
|
|
}
|
|
if (i == 0) {
|
|
redir[0] = '\0';
|
|
}
|
|
else {
|
|
ap_snprintf(redir, sizeof(redir), "/redir#%d", i);
|
|
}
|
|
|
|
ap_snprintf(str3, sizeof(str3),
|
|
"%s %s [%s/sid#%lx][rid#%lx/%s%s] (%d) %s\n", str1,
|
|
current_logtime(r), ap_get_server_name(r),
|
|
(unsigned long)(r->server), (unsigned long)r,
|
|
type, redir, level, str2);
|
|
|
|
ap_lock(rewrite_log_lock);
|
|
nbytes = strlen(str3);
|
|
ap_write(conf->rewritelogfp, str3, &nbytes);
|
|
ap_unlock(rewrite_log_lock);
|
|
|
|
va_end(ap);
|
|
return;
|
|
}
|
|
|
|
static char *current_logtime(request_rec *r)
|
|
{
|
|
ap_exploded_time_t t;
|
|
char tstr[80];
|
|
ap_size_t len;
|
|
|
|
ap_explode_localtime(&t, ap_now());
|
|
|
|
ap_strftime(tstr, &len, 80, "[%d/%b/%Y:%H:%M:%S ", &t);
|
|
ap_snprintf(tstr + strlen(tstr), 80-strlen(tstr), "%c%.2d%.2d]",
|
|
t.tm_gmtoff < 0 ? '-' : '+',
|
|
t.tm_gmtoff / (60*60), t.tm_gmtoff % (60*60));
|
|
return ap_pstrdup(r->pool, tstr);
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
** +-------------------------------------------------------+
|
|
** | |
|
|
** | rewriting lockfile support
|
|
** | |
|
|
** +-------------------------------------------------------+
|
|
*/
|
|
|
|
#define REWRITELOCK_MODE ( APR_UREAD | APR_UWRITE | APR_GREAD | APR_WREAD )
|
|
|
|
static void rewritelock_create(server_rec *s, ap_pool_t *p)
|
|
{
|
|
ap_status_t rc;
|
|
|
|
/* only operate if a lockfile is used */
|
|
if (lockname == NULL || *(lockname) == '\0') {
|
|
return;
|
|
}
|
|
|
|
/* fixup the path, especially for rewritelock_remove() */
|
|
lockname = ap_server_root_relative(p, lockname);
|
|
|
|
/* create the lockfile */
|
|
rc = ap_create_lock (&rewrite_map_lock, APR_MUTEX, APR_LOCKALL, lockname, p);
|
|
if (rc != APR_SUCCESS) {
|
|
ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
|
|
"mod_rewrite: Parent could not create RewriteLock "
|
|
"file %s", lockname);
|
|
exit(1);
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
static ap_status_t rewritelock_remove(void *data)
|
|
{
|
|
/* only operate if a lockfile is used */
|
|
if (lockname == NULL || *(lockname) == '\0') {
|
|
return APR_SUCCESS;
|
|
}
|
|
|
|
/* destroy the rewritelock */
|
|
ap_destroy_lock (rewrite_map_lock);
|
|
rewrite_map_lock = NULL;
|
|
lockname = NULL;
|
|
return(0);
|
|
}
|
|
|
|
|
|
/*
|
|
** +-------------------------------------------------------+
|
|
** | |
|
|
** | program map support
|
|
** | |
|
|
** +-------------------------------------------------------+
|
|
*/
|
|
|
|
static void run_rewritemap_programs(server_rec *s, ap_pool_t *p)
|
|
{
|
|
rewrite_server_conf *conf;
|
|
ap_file_t *fpin = NULL;
|
|
ap_file_t *fpout = NULL;
|
|
ap_file_t *fperr = NULL;
|
|
ap_array_header_t *rewritemaps;
|
|
rewritemap_entry *entries;
|
|
rewritemap_entry *map;
|
|
int i;
|
|
int rc;
|
|
|
|
conf = ap_get_module_config(s->module_config, &rewrite_module);
|
|
|
|
/* If the engine isn't turned on,
|
|
* don't even try to do anything.
|
|
*/
|
|
if (conf->state == ENGINE_DISABLED) {
|
|
return;
|
|
}
|
|
|
|
rewritemaps = conf->rewritemaps;
|
|
entries = (rewritemap_entry *)rewritemaps->elts;
|
|
for (i = 0; i < rewritemaps->nelts; i++) {
|
|
map = &entries[i];
|
|
if (map->type != MAPTYPE_PRG) {
|
|
continue;
|
|
}
|
|
if (map->datafile == NULL
|
|
|| *(map->datafile) == '\0'
|
|
|| map->fpin != NULL
|
|
|| map->fpout != NULL ) {
|
|
continue;
|
|
}
|
|
fpin = NULL;
|
|
fpout = NULL;
|
|
rc = rewritemap_program_child(p, map->datafile,
|
|
&fpout, &fpin, &fperr);
|
|
if (rc != APR_SUCCESS || fpin == NULL || fpout == NULL) {
|
|
ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
|
|
"mod_rewrite: could not fork child for "
|
|
"RewriteMap process. %d", rc);
|
|
exit(1);
|
|
}
|
|
map->fpin = fpin;
|
|
map->fpout = fpout;
|
|
map->fperr = fperr;
|
|
}
|
|
return;
|
|
}
|
|
|
|
/* child process code */
|
|
static int rewritemap_program_child(ap_pool_t *p, char *progname,
|
|
ap_file_t **fpout, ap_file_t **fpin,
|
|
ap_file_t **fperr)
|
|
{
|
|
int rc = -1;
|
|
ap_procattr_t *procattr;
|
|
ap_proc_t procnew;
|
|
|
|
#ifdef SIGHUP
|
|
ap_signal(SIGHUP, SIG_IGN);
|
|
#endif
|
|
|
|
|
|
if ((ap_createprocattr_init(&procattr, p) != APR_SUCCESS) ||
|
|
(ap_setprocattr_io(procattr, APR_FULL_BLOCK,
|
|
APR_FULL_NONBLOCK,
|
|
APR_FULL_NONBLOCK) != APR_SUCCESS) ||
|
|
(ap_setprocattr_dir(procattr, ap_make_dirstr_parent(p, progname))
|
|
!= APR_SUCCESS) ||
|
|
(ap_setprocattr_cmdtype(procattr, APR_PROGRAM) != APR_SUCCESS)) {
|
|
/* Something bad happened, give up and go away. */
|
|
rc = -1;
|
|
}
|
|
else {
|
|
rc = ap_create_process(&procnew, progname, NULL, NULL, procattr, p);
|
|
|
|
if (rc == APR_SUCCESS) {
|
|
ap_note_subprocess(p, &procnew, kill_after_timeout);
|
|
|
|
if (fpin) {
|
|
(*fpin) = procnew.in;
|
|
}
|
|
|
|
if (fpout) {
|
|
(*fpout) = procnew.out;
|
|
}
|
|
|
|
if (fperr) {
|
|
(*fperr) = procnew.err;
|
|
}
|
|
}
|
|
}
|
|
|
|
return (rc);
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
** +-------------------------------------------------------+
|
|
** | |
|
|
** | environment variable support
|
|
** | |
|
|
** +-------------------------------------------------------+
|
|
*/
|
|
|
|
|
|
static void expand_variables_inbuffer(request_rec *r, char *buf, int buf_len)
|
|
{
|
|
char *newbuf;
|
|
newbuf = expand_variables(r, buf);
|
|
if (strcmp(newbuf, buf) != 0) {
|
|
ap_cpystrn(buf, newbuf, buf_len);
|
|
}
|
|
return;
|
|
}
|
|
|
|
static char *expand_variables(request_rec *r, char *str)
|
|
{
|
|
char output[MAX_STRING_LEN];
|
|
char input[MAX_STRING_LEN];
|
|
char *cp;
|
|
char *cp2;
|
|
char *cp3;
|
|
int expanded;
|
|
char *outp;
|
|
char *endp;
|
|
|
|
ap_cpystrn(input, str, sizeof(input));
|
|
output[0] = '\0';
|
|
outp = output;
|
|
endp = output + sizeof(output);
|
|
expanded = 0;
|
|
for (cp = input; cp < input+MAX_STRING_LEN; ) {
|
|
if ((cp2 = strstr(cp, "%{")) != NULL) {
|
|
if ((cp3 = strstr(cp2, "}")) != NULL) {
|
|
*cp2 = '\0';
|
|
outp = ap_cpystrn(outp, cp, endp - outp);
|
|
|
|
cp2 += 2;
|
|
*cp3 = '\0';
|
|
outp = ap_cpystrn(outp, lookup_variable(r, cp2), endp - outp);
|
|
|
|
cp = cp3+1;
|
|
expanded = 1;
|
|
continue;
|
|
}
|
|
}
|
|
outp = ap_cpystrn(outp, cp, endp - outp);
|
|
break;
|
|
}
|
|
return expanded ? ap_pstrdup(r->pool, output) : str;
|
|
}
|
|
|
|
static char *lookup_variable(request_rec *r, char *var)
|
|
{
|
|
const char *result;
|
|
char resultbuf[LONG_STRING_LEN];
|
|
ap_exploded_time_t tm;
|
|
request_rec *rsub;
|
|
#ifndef WIN32
|
|
struct passwd *pw;
|
|
struct group *gr;
|
|
struct stat finfo;
|
|
#endif
|
|
|
|
result = NULL;
|
|
|
|
/* HTTP headers */
|
|
if (strcasecmp(var, "HTTP_USER_AGENT") == 0) {
|
|
result = lookup_header(r, "User-Agent");
|
|
}
|
|
else if (strcasecmp(var, "HTTP_REFERER") == 0) {
|
|
result = lookup_header(r, "Referer");
|
|
}
|
|
else if (strcasecmp(var, "HTTP_COOKIE") == 0) {
|
|
result = lookup_header(r, "Cookie");
|
|
}
|
|
else if (strcasecmp(var, "HTTP_FORWARDED") == 0) {
|
|
result = lookup_header(r, "Forwarded");
|
|
}
|
|
else if (strcasecmp(var, "HTTP_HOST") == 0) {
|
|
result = lookup_header(r, "Host");
|
|
}
|
|
else if (strcasecmp(var, "HTTP_PROXY_CONNECTION") == 0) {
|
|
result = lookup_header(r, "Proxy-Connection");
|
|
}
|
|
else if (strcasecmp(var, "HTTP_ACCEPT") == 0) {
|
|
result = lookup_header(r, "Accept");
|
|
}
|
|
/* all other headers from which we are still not know about */
|
|
else if (strlen(var) > 5 && strncasecmp(var, "HTTP:", 5) == 0) {
|
|
result = lookup_header(r, var+5);
|
|
}
|
|
|
|
/* connection stuff */
|
|
else if (strcasecmp(var, "REMOTE_ADDR") == 0) {
|
|
result = r->connection->remote_ip;
|
|
}
|
|
else if (strcasecmp(var, "REMOTE_HOST") == 0) {
|
|
result = (char *)ap_get_remote_host(r->connection,
|
|
r->per_dir_config, REMOTE_NAME);
|
|
}
|
|
else if (strcasecmp(var, "REMOTE_USER") == 0) {
|
|
result = r->user;
|
|
}
|
|
else if (strcasecmp(var, "REMOTE_IDENT") == 0) {
|
|
result = (char *)ap_get_remote_logname(r);
|
|
}
|
|
|
|
/* request stuff */
|
|
else if (strcasecmp(var, "THE_REQUEST") == 0) { /* non-standard */
|
|
result = r->the_request;
|
|
}
|
|
else if (strcasecmp(var, "REQUEST_METHOD") == 0) {
|
|
result = r->method;
|
|
}
|
|
else if (strcasecmp(var, "REQUEST_URI") == 0) { /* non-standard */
|
|
result = r->uri;
|
|
}
|
|
else if (strcasecmp(var, "SCRIPT_FILENAME") == 0 ||
|
|
strcasecmp(var, "REQUEST_FILENAME") == 0 ) {
|
|
result = r->filename;
|
|
}
|
|
else if (strcasecmp(var, "PATH_INFO") == 0) {
|
|
result = r->path_info;
|
|
}
|
|
else if (strcasecmp(var, "QUERY_STRING") == 0) {
|
|
result = r->args;
|
|
}
|
|
else if (strcasecmp(var, "AUTH_TYPE") == 0) {
|
|
result = r->ap_auth_type;
|
|
}
|
|
else if (strcasecmp(var, "IS_SUBREQ") == 0) { /* non-standard */
|
|
result = (r->main != NULL ? "true" : "false");
|
|
}
|
|
|
|
/* internal server stuff */
|
|
else if (strcasecmp(var, "DOCUMENT_ROOT") == 0) {
|
|
result = ap_document_root(r);
|
|
}
|
|
else if (strcasecmp(var, "SERVER_ADMIN") == 0) {
|
|
result = r->server->server_admin;
|
|
}
|
|
else if (strcasecmp(var, "SERVER_NAME") == 0) {
|
|
result = ap_get_server_name(r);
|
|
}
|
|
else if (strcasecmp(var, "SERVER_ADDR") == 0) { /* non-standard */
|
|
result = r->connection->local_ip;
|
|
}
|
|
else if (strcasecmp(var, "SERVER_PORT") == 0) {
|
|
ap_snprintf(resultbuf, sizeof(resultbuf), "%u", ap_get_server_port(r));
|
|
result = resultbuf;
|
|
}
|
|
else if (strcasecmp(var, "SERVER_PROTOCOL") == 0) {
|
|
result = r->protocol;
|
|
}
|
|
else if (strcasecmp(var, "SERVER_SOFTWARE") == 0) {
|
|
result = ap_get_server_version();
|
|
}
|
|
else if (strcasecmp(var, "API_VERSION") == 0) { /* non-standard */
|
|
ap_snprintf(resultbuf, sizeof(resultbuf), "%d:%d",
|
|
MODULE_MAGIC_NUMBER_MAJOR, MODULE_MAGIC_NUMBER_MINOR);
|
|
result = resultbuf;
|
|
}
|
|
|
|
/* XXX: wow this has gotta be slow if you actually use it for a lot, recalculates exploded time for each variable */
|
|
/* underlaying Unix system stuff */
|
|
else if (strcasecmp(var, "TIME_YEAR") == 0) {
|
|
ap_explode_localtime(&tm, ap_now());
|
|
ap_snprintf(resultbuf, sizeof(resultbuf), "%04d", tm.tm_year + 1900);
|
|
result = resultbuf;
|
|
}
|
|
#define MKTIMESTR(format, tmfield) \
|
|
ap_explode_localtime(&tm, ap_now()); \
|
|
ap_snprintf(resultbuf, sizeof(resultbuf), format, tm.tmfield); \
|
|
result = resultbuf;
|
|
else if (strcasecmp(var, "TIME_MON") == 0) {
|
|
MKTIMESTR("%02d", tm_mon+1)
|
|
}
|
|
else if (strcasecmp(var, "TIME_DAY") == 0) {
|
|
MKTIMESTR("%02d", tm_mday)
|
|
}
|
|
else if (strcasecmp(var, "TIME_HOUR") == 0) {
|
|
MKTIMESTR("%02d", tm_hour)
|
|
}
|
|
else if (strcasecmp(var, "TIME_MIN") == 0) {
|
|
MKTIMESTR("%02d", tm_min)
|
|
}
|
|
else if (strcasecmp(var, "TIME_SEC") == 0) {
|
|
MKTIMESTR("%02d", tm_sec)
|
|
}
|
|
else if (strcasecmp(var, "TIME_WDAY") == 0) {
|
|
MKTIMESTR("%d", tm_wday)
|
|
}
|
|
else if (strcasecmp(var, "TIME") == 0) {
|
|
ap_explode_localtime(&tm, ap_now());
|
|
ap_snprintf(resultbuf, sizeof(resultbuf),
|
|
"%04d%02d%02d%02d%02d%02d", tm.tm_year + 1900,
|
|
tm.tm_mon+1, tm.tm_mday,
|
|
tm.tm_hour, tm.tm_min, tm.tm_sec);
|
|
result = resultbuf;
|
|
rewritelog(r, 1, "RESULT='%s'", result);
|
|
}
|
|
|
|
/* all other env-variables from the parent Apache process */
|
|
else if (strlen(var) > 4 && strncasecmp(var, "ENV:", 4) == 0) {
|
|
/* first try the internal Apache notes structure */
|
|
result = ap_table_get(r->notes, var+4);
|
|
/* second try the internal Apache env structure */
|
|
if (result == NULL) {
|
|
result = ap_table_get(r->subprocess_env, var+4);
|
|
}
|
|
/* third try the external OS env */
|
|
if (result == NULL) {
|
|
result = getenv(var+4);
|
|
}
|
|
}
|
|
|
|
#define LOOKAHEAD(subrecfunc) \
|
|
if ( \
|
|
/* filename is safe to use */ \
|
|
r->filename != NULL \
|
|
/* - and we're either not in a subrequest */ \
|
|
&& ( r->main == NULL \
|
|
/* - or in a subrequest where paths are non-NULL... */ \
|
|
|| ( r->main->uri != NULL && r->uri != NULL \
|
|
/* ...and sub and main paths differ */ \
|
|
&& strcmp(r->main->uri, r->uri) != 0))) { \
|
|
/* process a file-based subrequest */ \
|
|
rsub = subrecfunc(r->filename, r); \
|
|
/* now recursively lookup the variable in the sub_req */ \
|
|
result = lookup_variable(rsub, var+5); \
|
|
/* copy it up to our scope before we destroy sub_req's ap_pool_t */ \
|
|
result = ap_pstrdup(r->pool, result); \
|
|
/* cleanup by destroying the subrequest */ \
|
|
ap_destroy_sub_req(rsub); \
|
|
/* log it */ \
|
|
rewritelog(r, 5, "lookahead: path=%s var=%s -> val=%s", \
|
|
r->filename, var+5, result); \
|
|
/* return ourself to prevent re-pstrdup */ \
|
|
return (char *)result; \
|
|
}
|
|
|
|
/* look-ahead for parameter through URI-based sub-request */
|
|
else if (strlen(var) > 5 && strncasecmp(var, "LA-U:", 5) == 0) {
|
|
LOOKAHEAD(ap_sub_req_lookup_uri)
|
|
}
|
|
/* look-ahead for parameter through file-based sub-request */
|
|
else if (strlen(var) > 5 && strncasecmp(var, "LA-F:", 5) == 0) {
|
|
LOOKAHEAD(ap_sub_req_lookup_file)
|
|
}
|
|
|
|
#if !defined(WIN32) && !defined(NETWARE)
|
|
/* Win32 has a rather different view of file ownerships.
|
|
For now, just forget it */
|
|
|
|
/* file stuff */
|
|
else if (strcasecmp(var, "SCRIPT_USER") == 0) {
|
|
result = "<unknown>";
|
|
if (r->finfo.protection != 0) {
|
|
if ((pw = getpwuid(r->finfo.user)) != NULL) {
|
|
result = pw->pw_name;
|
|
}
|
|
}
|
|
else {
|
|
if (stat(r->filename, &finfo) == 0) {
|
|
if ((pw = getpwuid(finfo.st_uid)) != NULL) {
|
|
result = pw->pw_name;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else if (strcasecmp(var, "SCRIPT_GROUP") == 0) {
|
|
result = "<unknown>";
|
|
if (r->finfo.protection != 0) {
|
|
if ((gr = getgrgid(r->finfo.group)) != NULL) {
|
|
result = gr->gr_name;
|
|
}
|
|
}
|
|
else {
|
|
if (stat(r->filename, &finfo) == 0) {
|
|
if ((gr = getgrgid(finfo.st_gid)) != NULL) {
|
|
result = gr->gr_name;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#endif /* ndef WIN32 && NETWARE*/
|
|
|
|
if (result == NULL) {
|
|
return ap_pstrdup(r->pool, "");
|
|
}
|
|
else {
|
|
return ap_pstrdup(r->pool, result);
|
|
}
|
|
}
|
|
|
|
static char *lookup_header(request_rec *r, const char *name)
|
|
{
|
|
ap_array_header_t *hdrs_arr;
|
|
ap_table_entry_t *hdrs;
|
|
int i;
|
|
|
|
hdrs_arr = ap_table_elts(r->headers_in);
|
|
hdrs = (ap_table_entry_t *)hdrs_arr->elts;
|
|
for (i = 0; i < hdrs_arr->nelts; ++i) {
|
|
if (hdrs[i].key == NULL) {
|
|
continue;
|
|
}
|
|
if (strcasecmp(hdrs[i].key, name) == 0) {
|
|
ap_table_merge(r->notes, VARY_KEY_THIS, name);
|
|
return hdrs[i].val;
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
** +-------------------------------------------------------+
|
|
** | |
|
|
** | caching support
|
|
** | |
|
|
** +-------------------------------------------------------+
|
|
*/
|
|
|
|
|
|
static cache *init_cache(ap_pool_t *p)
|
|
{
|
|
cache *c;
|
|
|
|
c = (cache *)ap_palloc(p, sizeof(cache));
|
|
if (ap_create_pool(&c->pool, p) != APR_SUCCESS)
|
|
return NULL;
|
|
c->lists = ap_make_array(c->pool, 2, sizeof(cachelist));
|
|
return c;
|
|
}
|
|
|
|
static void set_cache_string(cache *c, char *res, int mode, time_t t,
|
|
char *key, char *value)
|
|
{
|
|
cacheentry ce;
|
|
|
|
ce.time = t;
|
|
ce.key = key;
|
|
ce.value = value;
|
|
store_cache_string(c, res, &ce);
|
|
return;
|
|
}
|
|
|
|
static char *get_cache_string(cache *c, char *res, int mode,
|
|
time_t t, char *key)
|
|
{
|
|
cacheentry *ce;
|
|
|
|
ce = retrieve_cache_string(c, res, key);
|
|
if (ce == NULL) {
|
|
return NULL;
|
|
}
|
|
if (mode & CACHEMODE_TS) {
|
|
if (t != ce->time) {
|
|
return NULL;
|
|
}
|
|
}
|
|
else if (mode & CACHEMODE_TTL) {
|
|
if (t > ce->time) {
|
|
return NULL;
|
|
}
|
|
}
|
|
return ap_pstrdup(c->pool, ce->value);
|
|
}
|
|
|
|
static int cache_tlb_hash(char *key)
|
|
{
|
|
unsigned long n;
|
|
char *p;
|
|
|
|
n = 0;
|
|
for (p=key; *p != '\0'; ++p) {
|
|
n = n * 53711 + 134561 + (unsigned)(*p & 0xff);
|
|
}
|
|
|
|
return n % CACHE_TLB_ROWS;
|
|
}
|
|
|
|
static cacheentry *cache_tlb_lookup(cachetlbentry *tlb, cacheentry *elt,
|
|
char *key)
|
|
{
|
|
int ix = cache_tlb_hash(key);
|
|
int i;
|
|
int j;
|
|
|
|
for (i=0; i < CACHE_TLB_COLS; ++i) {
|
|
j = tlb[ix].t[i];
|
|
if (j < 0)
|
|
return NULL;
|
|
if (strcmp(elt[j].key, key) == 0)
|
|
return &elt[j];
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static void cache_tlb_replace(cachetlbentry *tlb, cacheentry *elt,
|
|
cacheentry *e)
|
|
{
|
|
int ix = cache_tlb_hash(e->key);
|
|
int i;
|
|
|
|
tlb = &tlb[ix];
|
|
|
|
for (i=1; i < CACHE_TLB_COLS; ++i)
|
|
tlb->t[i] = tlb->t[i-1];
|
|
|
|
tlb->t[0] = e - elt;
|
|
}
|
|
|
|
static void store_cache_string(cache *c, char *res, cacheentry *ce)
|
|
{
|
|
int i;
|
|
int j;
|
|
cachelist *l;
|
|
cacheentry *e;
|
|
cachetlbentry *t;
|
|
int found_list;
|
|
|
|
found_list = 0;
|
|
/* first try to edit an existing entry */
|
|
for (i = 0; i < c->lists->nelts; i++) {
|
|
l = &(((cachelist *)c->lists->elts)[i]);
|
|
if (strcmp(l->resource, res) == 0) {
|
|
found_list = 1;
|
|
|
|
e = cache_tlb_lookup((cachetlbentry *)l->tlb->elts,
|
|
(cacheentry *)l->entries->elts, ce->key);
|
|
if (e != NULL) {
|
|
e->time = ce->time;
|
|
e->value = ap_pstrdup(c->pool, ce->value);
|
|
return;
|
|
}
|
|
|
|
for (j = 0; j < l->entries->nelts; j++) {
|
|
e = &(((cacheentry *)l->entries->elts)[j]);
|
|
if (strcmp(e->key, ce->key) == 0) {
|
|
e->time = ce->time;
|
|
e->value = ap_pstrdup(c->pool, ce->value);
|
|
cache_tlb_replace((cachetlbentry *)l->tlb->elts,
|
|
(cacheentry *)l->entries->elts, e);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* create a needed new list */
|
|
if (!found_list) {
|
|
l = ap_push_array(c->lists);
|
|
l->resource = ap_pstrdup(c->pool, res);
|
|
l->entries = ap_make_array(c->pool, 2, sizeof(cacheentry));
|
|
l->tlb = ap_make_array(c->pool, CACHE_TLB_ROWS,
|
|
sizeof(cachetlbentry));
|
|
for (i=0; i<CACHE_TLB_ROWS; ++i) {
|
|
t = &((cachetlbentry *)l->tlb->elts)[i];
|
|
for (j=0; j<CACHE_TLB_COLS; ++j)
|
|
t->t[j] = -1;
|
|
}
|
|
}
|
|
|
|
/* create the new entry */
|
|
for (i = 0; i < c->lists->nelts; i++) {
|
|
l = &(((cachelist *)c->lists->elts)[i]);
|
|
if (strcmp(l->resource, res) == 0) {
|
|
e = ap_push_array(l->entries);
|
|
e->time = ce->time;
|
|
e->key = ap_pstrdup(c->pool, ce->key);
|
|
e->value = ap_pstrdup(c->pool, ce->value);
|
|
cache_tlb_replace((cachetlbentry *)l->tlb->elts,
|
|
(cacheentry *)l->entries->elts, e);
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* not reached, but when it is no problem... */
|
|
return;
|
|
}
|
|
|
|
static cacheentry *retrieve_cache_string(cache *c, char *res, char *key)
|
|
{
|
|
int i;
|
|
int j;
|
|
cachelist *l;
|
|
cacheentry *e;
|
|
|
|
for (i = 0; i < c->lists->nelts; i++) {
|
|
l = &(((cachelist *)c->lists->elts)[i]);
|
|
if (strcmp(l->resource, res) == 0) {
|
|
|
|
e = cache_tlb_lookup((cachetlbentry *)l->tlb->elts,
|
|
(cacheentry *)l->entries->elts, key);
|
|
if (e != NULL)
|
|
return e;
|
|
|
|
for (j = 0; j < l->entries->nelts; j++) {
|
|
e = &(((cacheentry *)l->entries->elts)[j]);
|
|
if (strcmp(e->key, key) == 0) {
|
|
return e;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
** +-------------------------------------------------------+
|
|
** | |
|
|
** | misc functions
|
|
** | |
|
|
** +-------------------------------------------------------+
|
|
*/
|
|
|
|
static char *subst_prefix_path(request_rec *r, char *input, char *match,
|
|
char *subst)
|
|
{
|
|
char matchbuf[LONG_STRING_LEN];
|
|
char substbuf[LONG_STRING_LEN];
|
|
char *output;
|
|
int l;
|
|
|
|
output = input;
|
|
|
|
/* first create a match string which always has a trailing slash */
|
|
l = ap_cpystrn(matchbuf, match, sizeof(matchbuf)) - matchbuf;
|
|
if (matchbuf[l-1] != '/') {
|
|
matchbuf[l] = '/';
|
|
matchbuf[l+1] = '\0';
|
|
l++;
|
|
}
|
|
/* now compare the prefix */
|
|
if (strncmp(input, matchbuf, l) == 0) {
|
|
rewritelog(r, 5, "strip matching prefix: %s -> %s", output, output+l);
|
|
output = ap_pstrdup(r->pool, output+l);
|
|
|
|
/* and now add the base-URL as replacement prefix */
|
|
l = ap_cpystrn(substbuf, subst, sizeof(substbuf)) - substbuf;
|
|
if (substbuf[l-1] != '/') {
|
|
substbuf[l] = '/';
|
|
substbuf[l+1] = '\0';
|
|
l++;
|
|
}
|
|
if (output[0] == '/') {
|
|
rewritelog(r, 4, "add subst prefix: %s -> %s%s",
|
|
output, substbuf, output+1);
|
|
output = ap_pstrcat(r->pool, substbuf, output+1, NULL);
|
|
}
|
|
else {
|
|
rewritelog(r, 4, "add subst prefix: %s -> %s%s",
|
|
output, substbuf, output);
|
|
output = ap_pstrcat(r->pool, substbuf, output, NULL);
|
|
}
|
|
}
|
|
return output;
|
|
}
|
|
|
|
|
|
/*
|
|
**
|
|
** own command line parser which don't have the '\\' problem
|
|
**
|
|
*/
|
|
|
|
static int parseargline(char *str, char **a1, char **a2, char **a3)
|
|
{
|
|
char *cp;
|
|
int isquoted;
|
|
|
|
#define SKIP_WHITESPACE(cp) \
|
|
for ( ; *cp == ' ' || *cp == '\t'; ) { \
|
|
cp++; \
|
|
};
|
|
|
|
#define CHECK_QUOTATION(cp,isquoted) \
|
|
isquoted = 0; \
|
|
if (*cp == '"') { \
|
|
isquoted = 1; \
|
|
cp++; \
|
|
}
|
|
|
|
#define DETERMINE_NEXTSTRING(cp,isquoted) \
|
|
for ( ; *cp != '\0'; cp++) { \
|
|
if ( (isquoted && (*cp == ' ' || *cp == '\t')) \
|
|
|| (*cp == '\\' && (*(cp+1) == ' ' || *(cp+1) == '\t'))) { \
|
|
cp++; \
|
|
continue; \
|
|
} \
|
|
if ( (!isquoted && (*cp == ' ' || *cp == '\t')) \
|
|
|| (isquoted && *cp == '"') ) { \
|
|
break; \
|
|
} \
|
|
}
|
|
|
|
cp = str;
|
|
SKIP_WHITESPACE(cp);
|
|
|
|
/* determine first argument */
|
|
CHECK_QUOTATION(cp, isquoted);
|
|
*a1 = cp;
|
|
DETERMINE_NEXTSTRING(cp, isquoted);
|
|
if (*cp == '\0') {
|
|
return 1;
|
|
}
|
|
*cp++ = '\0';
|
|
|
|
SKIP_WHITESPACE(cp);
|
|
|
|
/* determine second argument */
|
|
CHECK_QUOTATION(cp, isquoted);
|
|
*a2 = cp;
|
|
DETERMINE_NEXTSTRING(cp, isquoted);
|
|
if (*cp == '\0') {
|
|
*cp++ = '\0';
|
|
*a3 = NULL;
|
|
return 0;
|
|
}
|
|
*cp++ = '\0';
|
|
|
|
SKIP_WHITESPACE(cp);
|
|
|
|
/* again check if there are only two arguments */
|
|
if (*cp == '\0') {
|
|
*cp++ = '\0';
|
|
*a3 = NULL;
|
|
return 0;
|
|
}
|
|
|
|
/* determine second argument */
|
|
CHECK_QUOTATION(cp, isquoted);
|
|
*a3 = cp;
|
|
DETERMINE_NEXTSTRING(cp, isquoted);
|
|
*cp++ = '\0';
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static void add_env_variable(request_rec *r, char *s)
|
|
{
|
|
char var[MAX_STRING_LEN];
|
|
char val[MAX_STRING_LEN];
|
|
char *cp;
|
|
int n;
|
|
|
|
if ((cp = strchr(s, ':')) != NULL) {
|
|
n = ((cp-s) > MAX_STRING_LEN-1 ? MAX_STRING_LEN-1 : (cp-s));
|
|
memcpy(var, s, n);
|
|
var[n] = '\0';
|
|
ap_cpystrn(val, cp+1, sizeof(val));
|
|
ap_table_set(r->subprocess_env, var, val);
|
|
rewritelog(r, 5, "setting env variable '%s' to '%s'", var, val);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
**
|
|
** stat() for only the prefix of a path
|
|
**
|
|
*/
|
|
|
|
static int prefix_stat(const char *path, struct stat *sb)
|
|
{
|
|
char curpath[LONG_STRING_LEN];
|
|
char *cp;
|
|
|
|
ap_cpystrn(curpath, path, sizeof(curpath));
|
|
if (curpath[0] != '/') {
|
|
return 0;
|
|
}
|
|
if ((cp = strchr(curpath+1, '/')) != NULL) {
|
|
*cp = '\0';
|
|
}
|
|
if (stat(curpath, sb) == 0) {
|
|
return 1;
|
|
}
|
|
else {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
**
|
|
** Lexicographic Compare
|
|
**
|
|
*/
|
|
|
|
static int compare_lexicography(char *cpNum1, char *cpNum2)
|
|
{
|
|
int i;
|
|
int n1, n2;
|
|
|
|
n1 = strlen(cpNum1);
|
|
n2 = strlen(cpNum2);
|
|
if (n1 > n2) {
|
|
return 1;
|
|
}
|
|
if (n1 < n2) {
|
|
return -1;
|
|
}
|
|
for (i = 0; i < n1; i++) {
|
|
if (cpNum1[i] > cpNum2[i]) {
|
|
return 1;
|
|
}
|
|
if (cpNum1[i] < cpNum2[i]) {
|
|
return -1;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#ifdef NETWARE
|
|
int main(int argc, char *argv[])
|
|
{
|
|
ExitThread(TSR_THREAD, 0);
|
|
}
|
|
#endif
|
|
|
|
/*EOF*/
|