mod_cgid.c revision 12901074f5d6b36d08be84d8637b6f2c21e0da26
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering/* ====================================================================
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * The Apache Software License, Version 1.1
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Copyright (c) 2000-2002 The Apache Software Foundation. All rights
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * reserved.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Redistribution and use in source and binary forms, with or without
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * modification, are permitted provided that the following conditions
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * are met:
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * 1. Redistributions of source code must retain the above copyright
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * notice, this list of conditions and the following disclaimer.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * 2. Redistributions in binary form must reproduce the above copyright
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * notice, this list of conditions and the following disclaimer in
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * the documentation and/or other materials provided with the
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * distribution.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * 3. The end-user documentation included with the redistribution,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * if any, must include the following acknowledgment:
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * "This product includes software developed by the
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Apache Software Foundation (http://www.apache.org/)."
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Alternately, this acknowledgment may appear in the software itself,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * if and wherever such third-party acknowledgments normally appear.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * 4. The names "Apache" and "Apache Software Foundation" must
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * not be used to endorse or promote products derived from this
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * software without prior written permission. For written
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * permission, please contact apache@apache.org.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * 5. Products derived from this software may not be called "Apache",
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * nor may "Apache" appear in their name, without prior written
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * permission of the Apache Software Foundation.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
db73295accbec0c6513817f0a64a92018592bb26Lennart Poettering * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * SUCH DAMAGE.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * ====================================================================
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * This software consists of voluntary contributions made by many
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * individuals on behalf of the Apache Software Foundation. For more
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * information on the Apache Software Foundation, please see
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * <http://www.apache.org/>.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Portions of this software are based upon public domain software
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * originally written at the National Center for Supercomputing Applications,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * University of Illinois, Urbana-Champaign.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering/*
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * http_script: keeps all script-related ramblings together.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Compliant to cgi/1.1 spec
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Adapted by rst from original NCSA code by Rob McCool
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Apache adds some new env vars; REDIRECT_URL and REDIRECT_QUERY_STRING for
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * custom error responses, and DOCUMENT_ROOT because we found it useful.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * It also adds SERVER_ADMIN - useful for scripts to know who to mail when
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * they fail.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include "apr_lib.h"
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include "apr_strings.h"
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include "apr_general.h"
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include "apr_file_io.h"
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include "apr_portable.h"
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include "apr_buckets.h"
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include "apr_optional.h"
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include "apr_signal.h"
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#define APR_WANT_STRFUNC
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include "apr_want.h"
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#if APR_HAVE_SYS_SOCKET_H
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include <sys/socket.h>
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#endif
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#if APR_HAVE_UNISTD_H
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include <unistd.h>
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#endif
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#if APR_HAVE_SYS_TYPES_H
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include <sys/types.h>
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering#endif
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering#define CORE_PRIVATE
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering#include "util_filter.h"
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering#include "httpd.h"
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering#include "http_config.h"
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering#include "http_request.h"
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering#include "http_core.h"
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering#include "http_protocol.h"
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering#include "http_main.h"
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering#include "http_log.h"
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering#include "util_script.h"
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering#include "ap_mpm.h"
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering#include "unixd.h"
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering#include "mod_suexec.h"
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering#include "../filters/mod_include.h"
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering#include "mod_core.h"
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering/* ### should be tossed in favor of APR */
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering#include <sys/stat.h>
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering#include <sys/un.h> /* for sockaddr_un */
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poetteringmodule AP_MODULE_DECLARE_DATA cgid_module;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poetteringstatic int cgid_init(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp, server_rec *main_server);
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poetteringstatic int handle_exec(include_ctx_t *ctx, apr_bucket_brigade **bb, request_rec *r,
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering ap_filter_t *f, apr_bucket *head_ptr, apr_bucket **inserted_head);
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poetteringstatic APR_OPTIONAL_FN_TYPE(ap_register_include_handler) *cgid_pfn_reg_with_ssi;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poetteringstatic APR_OPTIONAL_FN_TYPE(ap_ssi_get_tag_and_value) *cgid_pfn_gtv;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poetteringstatic APR_OPTIONAL_FN_TYPE(ap_ssi_parse_string) *cgid_pfn_ps;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poetteringstatic apr_pool_t *pcgi;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poetteringstatic int total_modules = 0;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poetteringstatic pid_t daemon_pid;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poetteringstatic int daemon_should_exit = 0;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering/* Read and discard the data in the brigade produced by a CGI script */
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poetteringstatic void discard_script_output(apr_bucket_brigade *bb);
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering/* KLUDGE --- for back-combatibility, we don't have to check Execcgid
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * in ScriptAliased directories, which means we need to know if this
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * request came through ScriptAlias or not... so the Alias module
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering * leaves a note for us.
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering */
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poetteringstatic int is_scriptaliased(request_rec *r)
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering{
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering const char *t = apr_table_get(r->notes, "alias-forced-type");
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering return t && (!strcasecmp(t, "cgi-script"));
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering}
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering/* Configuration stuff */
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering#define DEFAULT_LOGBYTES 10385760
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering#define DEFAULT_BUFBYTES 1024
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering#define DEFAULT_SOCKET DEFAULT_REL_RUNTIMEDIR "/cgisock"
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering#define CGI_REQ 1
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering#define SSI_REQ 2
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering/* DEFAULT_CGID_LISTENBACKLOG controls the max depth on the unix socket's
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * pending connection queue. If a bunch of cgi requests arrive at about
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * the same time, connections from httpd threads/processes will back up
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * in the queue while the cgid process slowly forks off a child to process
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * each connection on the unix socket. If the queue is too short, the
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * httpd process will get ECONNREFUSED when trying to connect.
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering */
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering#ifndef DEFAULT_CGID_LISTENBACKLOG
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering#define DEFAULT_CGID_LISTENBACKLOG 100
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering#endif
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering/* DEFAULT_CONNECT_ATTEMPTS controls how many times we'll try to connect
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * to the cgi daemon from the thread/process handling the cgi request.
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * Generally we want to retry when we get ECONNREFUSED since it is
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * probably because the listen queue is full. We need to try harder so
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * the client doesn't see it as a 503 error.
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering *
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * Set this to 0 to continually retry until the connect works or Apache
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering * terminates.
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering */
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering#ifndef DEFAULT_CONNECT_ATTEMPTS
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering#define DEFAULT_CONNECT_ATTEMPTS 15
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering#endif
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poetteringtypedef struct {
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering const char *sockname;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering const char *logname;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering long logbytes;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering int bufbytes;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering} cgid_server_conf;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering/* If a request includes query info in the URL (stuff after "?"), and
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * the query info does not contain "=" (indicative of a FORM submission),
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * then this routine is called to create the argument list to be passed
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * to the CGI script. When suexec is enabled, the suexec path, user, and
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * group are the first three arguments to be passed; if not, all three
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * must be NULL. The query info is split into separate arguments, where
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * "+" is the separator between keyword arguments.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poetteringstatic char **create_argv(apr_pool_t *p, char *path, char *user, char *group,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering char *av0, const char *args)
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering{
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering int x, numwords;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering char **av;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering char *w;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering int idx = 0;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering /* count the number of keywords */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering for (x = 0, numwords = 1; args[x]; x++) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (args[x] == '+') {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering ++numwords;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (numwords > APACHE_ARG_MAX - 5) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering numwords = APACHE_ARG_MAX - 5; /* Truncate args to prevent overrun */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering av = (char **) apr_pcalloc(p, (numwords + 5) * sizeof(char *));
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (path) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering av[idx++] = path;
3e3db0ee860025ad663b13b0ace4e6d627611332Lennart Poettering }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (user) {
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering av[idx++] = user;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering }
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering if (group) {
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering av[idx++] = group;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering }
ab1525bc2d92780b4dc64bc5b9cdb52594e2df7dLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering av[idx++] = apr_pstrdup(p, av0);
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering for (x = 1; x <= numwords; x++) {
df3fb561b2df486a495a5f0bcc83168bd1860533Lennart Poettering w = ap_getword_nulls(p, &args, '+');
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (strcmp(w, "")) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering ap_unescape_url(w);
d6731e4c7964ee2860d4f5abdb0b52acd7a66960Tom Gundersen av[idx++] = ap_escape_shell_cmd(p, w);
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering }
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering }
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering av[idx] = NULL;
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering return av;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering}
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#if APR_HAS_OTHER_CHILD
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poetteringstatic void cgid_maint(int reason, void *data, apr_wait_t status)
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering{
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering pid_t *sd = data;
3e3db0ee860025ad663b13b0ace4e6d627611332Lennart Poettering
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering switch (reason) {
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering case APR_OC_REASON_DEATH:
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering case APR_OC_REASON_RESTART:
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering /* don't do anything; server is stopping or restarting */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering apr_proc_other_child_unregister(data);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering break;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering case APR_OC_REASON_LOST:
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering /* it would be better to restart just the cgid child
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * process but for now we'll gracefully restart the entire
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * server by sending AP_SIG_GRACEFUL to ourself, the httpd
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * parent process
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering kill(getpid(), AP_SIG_GRACEFUL);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering break;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering case APR_OC_REASON_UNREGISTER:
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering /* we get here when pcgi is cleaned up; pcgi gets cleaned
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * up when pconf gets cleaned up
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering kill(*sd, SIGHUP); /* send signal to daemon telling it to die */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering break;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering}
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#endif
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poetteringstatic int get_req(int fd, request_rec *r, char **argv0, char ***env, int *req_type)
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering{
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering int i, len, j, rc;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering unsigned char *data;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering char **environ;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering core_dir_config *temp_core;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering void **dconf;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering module *suexec_mod = ap_find_linked_module("mod_suexec.c");
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering r->server = apr_pcalloc(r->pool, sizeof(server_rec));
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering rc = read(fd, req_type, sizeof(int));
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (rc != sizeof(int)) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering return 1;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering rc = read(fd, &j, sizeof(int));
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (rc != sizeof(int)) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering return 1;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering rc = read(fd, &len, sizeof(int));
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (rc != sizeof(int)) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering return 1;
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering }
2301cb9fdb774d0a1b3d8f5e95c5d358721ccacbLennart Poettering
ab1525bc2d92780b4dc64bc5b9cdb52594e2df7dLennart Poettering data = apr_pcalloc(r->pool, len + 1); /* get a cleared byte for final '\0' */
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering rc = read(fd, data, len);
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering if (rc != len) {
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering return 1;
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering }
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering r->filename = ap_getword(r->pool, (const char **)&data, '\n');
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering *argv0 = ap_getword(r->pool, (const char **)&data, '\n');
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering r->uri = ap_getword(r->pool, (const char **)&data, '\n');
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering environ = apr_pcalloc(r->pool, (j + 2) *sizeof(char *));
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering i = 0;
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering for (i = 0; i < j; i++) {
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering environ[i] = ap_getword(r->pool, (const char **)&data, '\n');
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering }
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering *env = environ;
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering r->args = ap_getword(r->pool, (const char **)&data, '\n');
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering rc = read(fd, &i, sizeof(int));
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering if (rc != sizeof(int)) {
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering return 1;
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering }
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering /* add 1, so that if i == 0, we still malloc something. */
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering dconf = (void **) apr_pcalloc(r->pool, sizeof(void *) * (total_modules + DYNAMIC_MODULE_LIMIT));
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering temp_core = (core_dir_config *)apr_palloc(r->pool, sizeof(core_module));
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering dconf[i] = (void *)temp_core;
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering if (suexec_mod) {
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering suexec_config_t *suexec_cfg = apr_pcalloc(r->pool, sizeof(*suexec_cfg));
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering rc = read(fd, &i, sizeof(int));
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering if (rc != sizeof(int)) {
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering return 1;
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering }
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering rc = read(fd, &suexec_cfg->ugid.uid, sizeof(uid_t));
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering if (rc != sizeof(uid_t)) {
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering return 1;
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering }
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering rc = read(fd, &suexec_cfg->ugid.gid, sizeof(gid_t));
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering if (rc != sizeof(gid_t)) {
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering return 1;
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering }
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering rc = read(fd, &suexec_cfg->active, sizeof(int));
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering if (rc != sizeof(int)) {
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering return 1;
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering }
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering dconf[i] = (void *)suexec_cfg;
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering }
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering r->per_dir_config = (ap_conf_vector_t *)dconf;
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering#if 0
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering#ifdef RLIMIT_CPU
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering read(fd, &j, sizeof(int));
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering if (j) {
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering temp_core->limit_cpu = (struct rlimit *)apr_palloc (sizeof(struct rlimit));
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering read(fd, temp_core->limit_cpu, sizeof(struct rlimit));
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering }
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering else {
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering temp_core->limit_cpu = NULL;
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering }
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering#endif
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering
d6731e4c7964ee2860d4f5abdb0b52acd7a66960Tom Gundersen#if defined (RLIMIT_DATA) || defined(RLIMIT_VMEM) || defined(RLIMIT_AS)
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering read(fd, &j, sizeof(int));
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering if (j) {
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering temp_core->limit_mem = (struct rlimit *)apr_palloc(r->pool, sizeof(struct rlimit));
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering read(fd, temp_core->limit_mem, sizeof(struct rlimit));
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering }
d6731e4c7964ee2860d4f5abdb0b52acd7a66960Tom Gundersen else {
d6731e4c7964ee2860d4f5abdb0b52acd7a66960Tom Gundersen temp_core->limit_mem = NULL;
2301cb9fdb774d0a1b3d8f5e95c5d358721ccacbLennart Poettering }
67272d157a35e5cda4e5c904eafdcc23d20541d1Tom Gundersen#endif
67272d157a35e5cda4e5c904eafdcc23d20541d1Tom Gundersen
67272d157a35e5cda4e5c904eafdcc23d20541d1Tom Gundersen#ifdef RLIMIT_NPROC
67272d157a35e5cda4e5c904eafdcc23d20541d1Tom Gundersen read(fd, &j, sizeof(int));
67272d157a35e5cda4e5c904eafdcc23d20541d1Tom Gundersen if (j) {
1405434b6986d3c3d6ccaaa2e472bad843cbbfa1Lennart Poettering temp_core->limit_nproc = (struct rlimit *)apr_palloc(r->pool, sizeof(struct rlimit));
1405434b6986d3c3d6ccaaa2e472bad843cbbfa1Lennart Poettering read(fd, temp_core->limit_nproc, sizeof(struct rlimit));
1405434b6986d3c3d6ccaaa2e472bad843cbbfa1Lennart Poettering }
1405434b6986d3c3d6ccaaa2e472bad843cbbfa1Lennart Poettering else {
1405434b6986d3c3d6ccaaa2e472bad843cbbfa1Lennart Poettering temp_core->limit_nproc = NULL;
67272d157a35e5cda4e5c904eafdcc23d20541d1Tom Gundersen }
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering#endif
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering#endif
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering /* For right now, just make the notes table. At some point we will need
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering * to actually fill this out, but for now we just don't want suexec to
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering * seg fault.
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering */
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering r->notes = apr_table_make(r->pool, 1);
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering return 0;
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering}
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poetteringstatic void send_req(int fd, request_rec *r, char *argv0, char **env, int req_type)
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering{
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering int len, r_type = req_type;
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering int i = 0;
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering char *data;
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering module *suexec_mod = ap_find_linked_module("mod_suexec.c");
df3fb561b2df486a495a5f0bcc83168bd1860533Lennart Poettering
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering data = apr_pstrcat(r->pool, r->filename, "\n", argv0, "\n", r->uri, "\n",
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering NULL);
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering for (i =0; env[i]; i++) {
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering continue;
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering }
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering /* Write the request type (SSI "exec cmd" or cgi). */
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering if (write(fd, &r_type, sizeof(int)) < 0) {
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering "write to cgi daemon process");
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering }
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering /* Write the number of entries in the environment. */
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering if (write(fd, &i, sizeof(int)) < 0) {
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering "write to cgi daemon process");
db73295accbec0c6513817f0a64a92018592bb26Lennart Poettering }
db73295accbec0c6513817f0a64a92018592bb26Lennart Poettering
db73295accbec0c6513817f0a64a92018592bb26Lennart Poettering for (i = 0; env[i]; i++) {
db73295accbec0c6513817f0a64a92018592bb26Lennart Poettering data = apr_pstrcat(r->pool, data, env[i], "\n", NULL);
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering }
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering data = apr_pstrcat(r->pool, data, r->args, NULL);
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering len = strlen(data);
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering /* Write the length of the concatenated env string. */
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering if (write(fd, &len, sizeof(int)) < 0) {
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering "write to cgi daemon process");
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering }
2301cb9fdb774d0a1b3d8f5e95c5d358721ccacbLennart Poettering /* Write the concatted env string. */
c627729fc49d59ffcecc09555a34d9dd139927ceLennart Poettering if (write(fd, data, len) < 0) {
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering "write to cgi daemon process");
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering }
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering /* Write module_index id value. */
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering if (write(fd, &core_module.module_index, sizeof(int)) < 0) {
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering "write to cgi daemon process");
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (suexec_mod) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering suexec_config_t *suexec_cfg = ap_get_module_config(r->per_dir_config,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering suexec_mod);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
f7d68aa8c9430dfddee5f913f93b405a5d75723aLennart Poettering write(fd, &suexec_mod->module_index, sizeof(int));
f7d68aa8c9430dfddee5f913f93b405a5d75723aLennart Poettering write(fd, &suexec_cfg->ugid.uid, sizeof(uid_t));
f7d68aa8c9430dfddee5f913f93b405a5d75723aLennart Poettering write(fd, &suexec_cfg->ugid.gid, sizeof(gid_t));
f7d68aa8c9430dfddee5f913f93b405a5d75723aLennart Poettering write(fd, &suexec_cfg->active, sizeof(int));
f7d68aa8c9430dfddee5f913f93b405a5d75723aLennart Poettering }
f7d68aa8c9430dfddee5f913f93b405a5d75723aLennart Poettering
f7d68aa8c9430dfddee5f913f93b405a5d75723aLennart Poettering#if 0
f7d68aa8c9430dfddee5f913f93b405a5d75723aLennart Poettering#ifdef RLIMIT_CPU
f7d68aa8c9430dfddee5f913f93b405a5d75723aLennart Poettering if (conf->limit_cpu) {
f7d68aa8c9430dfddee5f913f93b405a5d75723aLennart Poettering len = 1;
f7d68aa8c9430dfddee5f913f93b405a5d75723aLennart Poettering write(fd, &len, sizeof(int));
f7d68aa8c9430dfddee5f913f93b405a5d75723aLennart Poettering write(fd, conf->limit_cpu, sizeof(struct rlimit));
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering else {
c627729fc49d59ffcecc09555a34d9dd139927ceLennart Poettering len = 0;
f7d68aa8c9430dfddee5f913f93b405a5d75723aLennart Poettering write(fd, &len, sizeof(int));
e92da1e5d0a3b38804e173af136ec7a076c7757eLennart Poettering }
f7d68aa8c9430dfddee5f913f93b405a5d75723aLennart Poettering#endif
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
03cc0fd1431b82e59c11ae12a274c1f2df23169dLennart Poettering#if defined(RLIMIT_DATA) || defined(RLIMIT_VMEM) || defined(RLIMIT_AS)
e92da1e5d0a3b38804e173af136ec7a076c7757eLennart Poettering if (conf->limit_mem) {
5323ead145304785121b72dcbc1c244303de7575Daniel Buch len = 1;
e92da1e5d0a3b38804e173af136ec7a076c7757eLennart Poettering write(fd, &len, sizeof(int));
03cc0fd1431b82e59c11ae12a274c1f2df23169dLennart Poettering write(fd, conf->limit_mem, sizeof(struct rlimit));
f7d68aa8c9430dfddee5f913f93b405a5d75723aLennart Poettering }
f7d68aa8c9430dfddee5f913f93b405a5d75723aLennart Poettering else {
f7d68aa8c9430dfddee5f913f93b405a5d75723aLennart Poettering len = 0;
f7d68aa8c9430dfddee5f913f93b405a5d75723aLennart Poettering write(fd, &len, sizeof(int));
f7d68aa8c9430dfddee5f913f93b405a5d75723aLennart Poettering }
f7d68aa8c9430dfddee5f913f93b405a5d75723aLennart Poettering#endif
f7d68aa8c9430dfddee5f913f93b405a5d75723aLennart Poettering
f7d68aa8c9430dfddee5f913f93b405a5d75723aLennart Poettering#ifdef RLIMIT_NPROC
f7d68aa8c9430dfddee5f913f93b405a5d75723aLennart Poettering if (conf->limit_nproc) {
f7d68aa8c9430dfddee5f913f93b405a5d75723aLennart Poettering len = 1;
f7d68aa8c9430dfddee5f913f93b405a5d75723aLennart Poettering write(fd, &len, sizeof(int));
f7d68aa8c9430dfddee5f913f93b405a5d75723aLennart Poettering write(fd, conf->limit_nproc, sizeof(struct rlimit));
03cc0fd1431b82e59c11ae12a274c1f2df23169dLennart Poettering }
03cc0fd1431b82e59c11ae12a274c1f2df23169dLennart Poettering else {
03cc0fd1431b82e59c11ae12a274c1f2df23169dLennart Poettering len = 0;
03cc0fd1431b82e59c11ae12a274c1f2df23169dLennart Poettering write(fd, &len, sizeof(int));
c627729fc49d59ffcecc09555a34d9dd139927ceLennart Poettering }
c627729fc49d59ffcecc09555a34d9dd139927ceLennart Poettering#endif
c627729fc49d59ffcecc09555a34d9dd139927ceLennart Poettering#endif
c627729fc49d59ffcecc09555a34d9dd139927ceLennart Poettering}
03cc0fd1431b82e59c11ae12a274c1f2df23169dLennart Poettering
03cc0fd1431b82e59c11ae12a274c1f2df23169dLennart Poetteringstatic void daemon_signal_handler(int sig)
03cc0fd1431b82e59c11ae12a274c1f2df23169dLennart Poettering{
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (sig == SIGHUP) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering ++daemon_should_exit;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering}
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poetteringstatic int cgid_server(void *data)
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering{
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering struct sockaddr_un unix_addr;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering int sd, sd2, rc, req_type;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering mode_t omask;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering apr_socklen_t len;
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering apr_pool_t *ptrans;
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering server_rec *main_server = data;
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering cgid_server_conf *sconf = ap_get_module_config(main_server->module_config,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering &cgid_module);
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering apr_pool_create(&ptrans, pcgi);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering apr_signal(SIGCHLD, SIG_IGN);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering apr_signal(SIGHUP, daemon_signal_handler);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering if (unlink(sconf->sockname) < 0 && errno != ENOENT) {
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering "Couldn't unlink unix domain socket %s",
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering sconf->sockname);
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering /* just a warning; don't bail out */
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering }
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if ((sd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server,
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering "Couldn't create unix domain socket");
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering return errno;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering memset(&unix_addr, 0, sizeof(unix_addr));
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering unix_addr.sun_family = AF_UNIX;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering strcpy(unix_addr.sun_path, sconf->sockname);
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering omask = umask(0077); /* so that only Apache can use socket */
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering rc = bind(sd, (struct sockaddr *)&unix_addr, sizeof(unix_addr));
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering umask(omask); /* can't fail, so can't clobber errno */
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering if (rc < 0) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering "Couldn't bind unix domain socket %s",
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering sconf->sockname);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering return errno;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (listen(sd, DEFAULT_CGID_LISTENBACKLOG) < 0) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering "Couldn't listen on unix domain socket");
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering return errno;
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering }
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering if (!geteuid()) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (chown(sconf->sockname, unixd_config.user_id, -1) < 0) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering "Couldn't change owner of unix domain socket %s",
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering sconf->sockname);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering return errno;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering unixd_setup_child(); /* if running as root, switch to configured user/group */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering while (!daemon_should_exit) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering int errfileno = STDERR_FILENO;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering char *argv0;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering char **env;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering const char * const *argv;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering apr_int32_t in_pipe;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering apr_int32_t out_pipe;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering apr_int32_t err_pipe;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering apr_cmdtype_e cmd_type;
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering request_rec *r;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering apr_procattr_t *procattr = NULL;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering apr_proc_t *procnew = NULL;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering apr_file_t *inout;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering apr_pool_clear(ptrans);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering len = sizeof(unix_addr);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering sd2 = accept(sd, (struct sockaddr *)&unix_addr, &len);
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering if (sd2 < 0) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (errno != EINTR) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering ap_log_error(APLOG_MARK, APLOG_ERR, errno,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering (server_rec *)data,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering "Error accepting on cgid socket");
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering continue;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering r = apr_pcalloc(ptrans, sizeof(request_rec));
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering procnew = apr_pcalloc(ptrans, sizeof(*procnew));
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering r->pool = ptrans;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering rc = get_req(sd2, r, &argv0, &env, &req_type);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (rc) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering ap_log_error(APLOG_MARK, APLOG_ERR, 0,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering main_server,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering "Error reading request on cgid socket");
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering close(sd2);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering continue;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering apr_os_file_put(&r->server->error_log, &errfileno, 0, r->pool);
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering apr_os_file_put(&inout, &sd2, 0, r->pool);
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering if (req_type == SSI_REQ) {
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering in_pipe = APR_NO_PIPE;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering out_pipe = APR_FULL_BLOCK;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering err_pipe = APR_NO_PIPE;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering cmd_type = APR_SHELLCMD;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering else {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering in_pipe = APR_CHILD_BLOCK;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering out_pipe = APR_CHILD_BLOCK;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering err_pipe = APR_CHILD_BLOCK;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering cmd_type = APR_PROGRAM;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (((rc = apr_procattr_create(&procattr, ptrans)) != APR_SUCCESS) ||
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering ((req_type == CGI_REQ) &&
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering (((rc = apr_procattr_io_set(procattr,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering in_pipe,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering out_pipe,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering err_pipe)) != APR_SUCCESS) ||
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering /* XXX apr_procattr_child_*_set() is creating an unnecessary
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * pipe between this process and the child being created...
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * It is cleaned up with the temporary pool for this request.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering ((rc = apr_procattr_child_err_set(procattr, r->server->error_log, NULL)) != APR_SUCCESS) ||
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering ((rc = apr_procattr_child_in_set(procattr, inout, NULL)) != APR_SUCCESS))) ||
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering ((rc = apr_procattr_child_out_set(procattr, inout, NULL)) != APR_SUCCESS) ||
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering ((rc = apr_procattr_dir_set(procattr,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering ap_make_dirstr_parent(r->pool, r->filename))) != APR_SUCCESS) ||
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering ((rc = apr_procattr_cmdtype_set(procattr, cmd_type)) != APR_SUCCESS)) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering /* Something bad happened, tell the world. */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering ap_log_rerror(APLOG_MARK, APLOG_ERR, rc, r,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering "couldn't set child process attributes: %s", r->filename);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering else {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering argv = (const char * const *)create_argv(r->pool, NULL, NULL, NULL, argv0, r->args);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering /* We want to close sd2 for the new CGI process too.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * If it is left open it'll make ap_pass_brigade() block
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * waiting for EOF if CGI forked something running long.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * close(sd2) here should be okay, as CGI channel
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * is already dup()ed by apr_procattr_child_{in,out}_set()
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * above.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering close(sd2);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering rc = ap_os_create_privileged_process(r, procnew, argv0, argv,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering (const char * const *)env,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering procattr, ptrans);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (rc != APR_SUCCESS) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering /* Bad things happened. Everyone should have cleaned up. */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering ap_log_rerror(APLOG_MARK, APLOG_ERR, rc, r,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering "couldn't create child process: %d: %s", rc, r->filename);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering return -1;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering}
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poetteringstatic int cgid_init(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering server_rec *main_server)
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering{
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering apr_proc_t *procnew;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering void *data;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering int first_time = 0;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering const char *userdata_key = "cgid_init";
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering module **m;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering apr_pool_userdata_get(&data, userdata_key, main_server->process->pool);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (!data) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering first_time = 1;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering apr_pool_userdata_set((const void *)1, userdata_key,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering apr_pool_cleanup_null, main_server->process->pool);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (!first_time) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering total_modules = 0;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering for (m = ap_preloaded_modules; *m != NULL; m++)
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering total_modules++;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering daemon_should_exit = 0; /* clear setting from previous generation */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if ((daemon_pid = fork()) < 0) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering "mod_cgid: Couldn't spawn cgid daemon process");
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering return DECLINED;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering else if (daemon_pid == 0) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering apr_pool_create(&pcgi, p);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering cgid_server(main_server);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering exit(-1);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering procnew = apr_pcalloc(p, sizeof(*procnew));
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering procnew->pid = daemon_pid;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering procnew->err = procnew->in = procnew->out = NULL;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering apr_pool_note_subprocess(p, procnew, APR_KILL_AFTER_TIMEOUT);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#if APR_HAS_OTHER_CHILD
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering apr_proc_other_child_register(procnew, cgid_maint, &procnew->pid, NULL, p);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#endif
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering cgid_pfn_reg_with_ssi = APR_RETRIEVE_OPTIONAL_FN(ap_register_include_handler);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering cgid_pfn_gtv = APR_RETRIEVE_OPTIONAL_FN(ap_ssi_get_tag_and_value);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering cgid_pfn_ps = APR_RETRIEVE_OPTIONAL_FN(ap_ssi_parse_string);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if ((cgid_pfn_reg_with_ssi) && (cgid_pfn_gtv) && (cgid_pfn_ps)) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering /* Required by mod_include filter. This is how mod_cgid registers
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * with mod_include to provide processing of the exec directive.
*/
cgid_pfn_reg_with_ssi("exec", handle_exec);
}
}
return OK;
}
static void *create_cgid_config(apr_pool_t *p, server_rec *s)
{
cgid_server_conf *c =
(cgid_server_conf *) apr_pcalloc(p, sizeof(cgid_server_conf));
c->logname = NULL;
c->logbytes = DEFAULT_LOGBYTES;
c->bufbytes = DEFAULT_BUFBYTES;
c->sockname = ap_server_root_relative(p, DEFAULT_SOCKET);
return c;
}
static void *merge_cgid_config(apr_pool_t *p, void *basev, void *overridesv)
{
cgid_server_conf *base = (cgid_server_conf *) basev, *overrides = (cgid_server_conf *) overridesv;
return overrides->logname ? overrides : base;
}
static const char *set_scriptlog(cmd_parms *cmd, void *dummy, const char *arg)
{
server_rec *s = cmd->server;
cgid_server_conf *conf = ap_get_module_config(s->module_config,
&cgid_module);
conf->logname = ap_server_root_relative(cmd->pool, arg);
if (!conf->logname) {
return apr_pstrcat(cmd->pool, "Invalid ScriptLog path ",
arg, NULL);
}
return NULL;
}
static const char *set_scriptlog_length(cmd_parms *cmd, void *dummy, const char *arg)
{
server_rec *s = cmd->server;
cgid_server_conf *conf = ap_get_module_config(s->module_config,
&cgid_module);
conf->logbytes = atol(arg);
return NULL;
}
static const char *set_scriptlog_buffer(cmd_parms *cmd, void *dummy, const char *arg)
{
server_rec *s = cmd->server;
cgid_server_conf *conf = ap_get_module_config(s->module_config,
&cgid_module);
conf->bufbytes = atoi(arg);
return NULL;
}
static const char *set_script_socket(cmd_parms *cmd, void *dummy, const char *arg)
{
server_rec *s = cmd->server;
cgid_server_conf *conf = ap_get_module_config(s->module_config,
&cgid_module);
conf->sockname = ap_server_root_relative(cmd->pool, arg);
if (!conf->sockname) {
return apr_pstrcat(cmd->pool, "Invalid Scriptsock path ",
arg, NULL);
}
return NULL;
}
static const command_rec cgid_cmds[] =
{
AP_INIT_TAKE1("ScriptLog", set_scriptlog, NULL, RSRC_CONF,
"the name of a log for script debugging info"),
AP_INIT_TAKE1("ScriptLogLength", set_scriptlog_length, NULL, RSRC_CONF,
"the maximum length (in bytes) of the script debug log"),
AP_INIT_TAKE1("ScriptLogBuffer", set_scriptlog_buffer, NULL, RSRC_CONF,
"the maximum size (in bytes) to record of a POST request"),
AP_INIT_TAKE1("Scriptsock", set_script_socket, NULL, RSRC_CONF,
"the name of the socket to use for communication with "
"the cgi daemon."),
{NULL}
};
static int log_scripterror(request_rec *r, cgid_server_conf * conf, int ret,
apr_status_t rv, char *error)
{
apr_file_t *f = NULL;
struct stat finfo;
char time_str[APR_CTIME_LEN];
int log_flags = rv ? APLOG_ERR : APLOG_ERR;
ap_log_rerror(APLOG_MARK, log_flags, rv, r,
"%s: %s", error, r->filename);
/* XXX Very expensive mainline case! Open, then getfileinfo! */
if (!conf->logname ||
((stat(conf->logname, &finfo) == 0)
&& (finfo.st_size > conf->logbytes)) ||
(apr_file_open(&f, conf->logname,
APR_APPEND|APR_WRITE|APR_CREATE, APR_OS_DEFAULT, r->pool) != APR_SUCCESS)) {
return ret;
}
/* "%% [Wed Jun 19 10:53:21 1996] GET /cgid-bin/printenv HTTP/1.0" */
apr_ctime(time_str, apr_time_now());
apr_file_printf(f, "%%%% [%s] %s %s%s%s %s\n", time_str, r->method, r->uri,
r->args ? "?" : "", r->args ? r->args : "", r->protocol);
/* "%% 500 /usr/local/apache/cgid-bin */
apr_file_printf(f, "%%%% %d %s\n", ret, r->filename);
apr_file_printf(f, "%%error\n%s\n", error);
apr_file_close(f);
return ret;
}
static int log_script(request_rec *r, cgid_server_conf * conf, int ret,
char *dbuf, const char *sbuf, apr_bucket_brigade *bb,
apr_file_t *script_err)
{
const apr_array_header_t *hdrs_arr = apr_table_elts(r->headers_in);
const apr_table_entry_t *hdrs = (apr_table_entry_t *) hdrs_arr->elts;
char argsbuffer[HUGE_STRING_LEN];
apr_file_t *f = NULL;
apr_bucket *e;
const char *buf;
apr_size_t len;
apr_status_t rv;
int first;
int i;
struct stat finfo;
char time_str[APR_CTIME_LEN];
/* XXX Very expensive mainline case! Open, then getfileinfo! */
if (!conf->logname ||
((stat(conf->logname, &finfo) == 0)
&& (finfo.st_size > conf->logbytes)) ||
(apr_file_open(&f, conf->logname,
APR_APPEND|APR_WRITE|APR_CREATE, APR_OS_DEFAULT, r->pool) != APR_SUCCESS)) {
/* Soak up script output */
discard_script_output(bb);
if (script_err) {
while (apr_file_gets(argsbuffer, HUGE_STRING_LEN,
script_err) == APR_SUCCESS)
continue;
}
return ret;
}
/* "%% [Wed Jun 19 10:53:21 1996] GET /cgid-bin/printenv HTTP/1.0" */
apr_ctime(time_str, apr_time_now());
apr_file_printf(f, "%%%% [%s] %s %s%s%s %s\n", time_str, r->method, r->uri,
r->args ? "?" : "", r->args ? r->args : "", r->protocol);
/* "%% 500 /usr/local/apache/cgid-bin" */
apr_file_printf(f, "%%%% %d %s\n", ret, r->filename);
apr_file_puts("%request\n", f);
for (i = 0; i < hdrs_arr->nelts; ++i) {
if (!hdrs[i].key)
continue;
apr_file_printf(f, "%s: %s\n", hdrs[i].key, hdrs[i].val);
}
if ((r->method_number == M_POST || r->method_number == M_PUT)
&& *dbuf) {
apr_file_printf(f, "\n%s\n", dbuf);
}
apr_file_puts("%response\n", f);
hdrs_arr = apr_table_elts(r->err_headers_out);
hdrs = (const apr_table_entry_t *) hdrs_arr->elts;
for (i = 0; i < hdrs_arr->nelts; ++i) {
if (!hdrs[i].key)
continue;
apr_file_printf(f, "%s: %s\n", hdrs[i].key, hdrs[i].val);
}
if (sbuf && *sbuf)
apr_file_printf(f, "%s\n", sbuf);
first = 1;
APR_BRIGADE_FOREACH(e, bb) {
if (APR_BUCKET_IS_EOS(e)) {
break;
}
rv = apr_bucket_read(e, &buf, &len, APR_BLOCK_READ);
if (!APR_STATUS_IS_SUCCESS(rv) || (len == 0)) {
break;
}
if (first) {
apr_file_puts("%stdout\n", f);
first = 0;
}
apr_file_write(f, buf, &len);
apr_file_puts("\n", f);
}
if (script_err) {
if (apr_file_gets(argsbuffer, HUGE_STRING_LEN,
script_err) == APR_SUCCESS) {
apr_file_puts("%stderr\n", f);
apr_file_puts(argsbuffer, f);
while (apr_file_gets(argsbuffer, HUGE_STRING_LEN,
script_err) == APR_SUCCESS)
apr_file_puts(argsbuffer, f);
apr_file_puts("\n", f);
}
}
if (script_err) {
apr_file_close(script_err);
}
apr_file_close(f);
return ret;
}
static apr_status_t close_unix_socket(void *thefd)
{
int fd = (int)thefd;
return close(fd);
}
static int connect_to_daemon(int *sdptr, request_rec *r,
cgid_server_conf *conf)
{
struct sockaddr_un unix_addr;
int sd;
int connect_tries;
apr_interval_time_t sliding_timer;
memset(&unix_addr, 0, sizeof(unix_addr));
unix_addr.sun_family = AF_UNIX;
strcpy(unix_addr.sun_path, conf->sockname);
connect_tries = 0;
sliding_timer = 100000; /* 100 milliseconds */
while (1) {
++connect_tries;
if ((sd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
return log_scripterror(r, conf, HTTP_INTERNAL_SERVER_ERROR, errno,
"unable to create socket to cgi daemon");
}
if (connect(sd, (struct sockaddr *)&unix_addr, sizeof(unix_addr)) < 0) {
if (errno == ECONNREFUSED && connect_tries < DEFAULT_CONNECT_ATTEMPTS) {
ap_log_rerror(APLOG_MARK, APLOG_DEBUG, errno, r,
"connect #%d to cgi daemon failed, sleeping before retry",
connect_tries);
close(sd);
apr_sleep(sliding_timer);
if (sliding_timer < 2 * APR_USEC_PER_SEC) {
sliding_timer *= 2;
}
}
else {
close(sd);
return log_scripterror(r, conf, HTTP_SERVICE_UNAVAILABLE, errno,
"unable to connect to cgi daemon after multiple tries");
}
}
else {
apr_pool_cleanup_register(r->pool, (void *)sd, close_unix_socket,
apr_pool_cleanup_null);
break; /* we got connected! */
}
/* gotta try again, but make sure the cgid daemon is still around */
if (kill(daemon_pid, 0) != 0) {
return log_scripterror(r, conf, HTTP_SERVICE_UNAVAILABLE, errno,
"cgid daemon is gone; is Apache terminating?");
}
}
*sdptr = sd;
return OK;
}
static void discard_script_output(apr_bucket_brigade *bb)
{
apr_bucket *e;
const char *buf;
apr_size_t len;
apr_status_t rv;
APR_BRIGADE_FOREACH(e, bb) {
if (APR_BUCKET_IS_EOS(e)) {
break;
}
rv = apr_bucket_read(e, &buf, &len, APR_BLOCK_READ);
if (!APR_STATUS_IS_SUCCESS(rv)) {
break;
}
}
}
/****************************************************************
*
* Actual cgid handling...
*/
static int cgid_handler(request_rec *r)
{
conn_rec *c = r->connection;
int retval, nph, dbpos = 0;
char *argv0, *dbuf = NULL;
apr_bucket_brigade *bb;
apr_bucket *b;
char argsbuffer[HUGE_STRING_LEN];
cgid_server_conf *conf;
int is_included;
int sd;
char **env;
apr_file_t *tempsock;
apr_size_t nbytes;
if(strcmp(r->handler,CGI_MAGIC_TYPE) && strcmp(r->handler,"cgi-script"))
return DECLINED;
if (r->method_number == M_OPTIONS) {
/* 99 out of 100 cgid scripts, this is all they support */
r->allowed |= (AP_METHOD_BIT << M_GET);
r->allowed |= (AP_METHOD_BIT << M_POST);
return DECLINED;
}
conf = ap_get_module_config(r->server->module_config, &cgid_module);
is_included = !strcmp(r->protocol, "INCLUDED");
if ((argv0 = strrchr(r->filename, '/')) != NULL)
argv0++;
else
argv0 = r->filename;
nph = !(strncmp(argv0, "nph-", 4));
if ((argv0 = strrchr(r->filename, '/')) != NULL)
argv0++;
else
argv0 = r->filename;
if (!(ap_allow_options(r) & OPT_EXECCGI) && !is_scriptaliased(r))
return log_scripterror(r, conf, HTTP_FORBIDDEN, 0,
"Options ExecCGI is off in this directory");
if (nph && is_included)
return log_scripterror(r, conf, HTTP_FORBIDDEN, 0,
"attempt to include NPH CGI script");
#if defined(OS2) || defined(WIN32)
#error mod_cgid does not work on this platform. If you teach it to, look
#error at mod_cgi.c for required code in this path.
#else
if (r->finfo.filetype == 0)
return log_scripterror(r, conf, HTTP_NOT_FOUND, 0,
"script not found or unable to stat");
#endif
if (r->finfo.filetype == APR_DIR)
return log_scripterror(r, conf, HTTP_FORBIDDEN, 0,
"attempt to invoke directory as script");
if ((r->used_path_info == AP_REQ_REJECT_PATH_INFO) &&
r->path_info && *r->path_info)
{
/* default to accept */
return log_scripterror(r, conf, HTTP_NOT_FOUND, 0,
"AcceptPathInfo off disallows user's path");
}
/*
if (!ap_suexec_enabled) {
if (!ap_can_exec(&r->finfo))
return log_scripterror(r, conf, HTTP_FORBIDDEN, 0,
"file permissions deny server execution");
}
*/
ap_add_common_vars(r);
ap_add_cgi_vars(r);
env = ap_create_environment(r->pool, r->subprocess_env);
if ((retval = connect_to_daemon(&sd, r, conf)) != OK) {
return retval;
}
send_req(sd, r, argv0, env, CGI_REQ);
/* We are putting the socket discriptor into an apr_file_t so that we can
* use a pipe bucket to send the data to the client.
* Note that this does not register a cleanup for the socket. We did
* that explicitly right after we created the socket.
*/
apr_os_file_put(&tempsock, &sd, 0, r->pool);
if ((retval = ap_setup_client_block(r, REQUEST_CHUNKED_ERROR)))
return retval;
if ((argv0 = strrchr(r->filename, '/')) != NULL)
argv0++;
else
argv0 = r->filename;
/* Transfer any put/post args, CERN style...
* Note that we already ignore SIGPIPE in the core server.
*/
if (ap_should_client_block(r)) {
int dbsize, len_read;
if (conf->logname) {
dbuf = apr_pcalloc(r->pool, conf->bufbytes + 1);
dbpos = 0;
}
while ((len_read =
ap_get_client_block(r, argsbuffer, HUGE_STRING_LEN)) > 0) {
if (conf->logname) {
if ((dbpos + len_read) > conf->bufbytes) {
dbsize = conf->bufbytes - dbpos;
}
else {
dbsize = len_read;
}
memcpy(dbuf + dbpos, argsbuffer, dbsize);
dbpos += dbsize;
}
nbytes = len_read;
apr_file_write(tempsock, argsbuffer, &nbytes);
if (nbytes < len_read) {
/* silly script stopped reading, soak up remaining message */
while (ap_get_client_block(r, argsbuffer, HUGE_STRING_LEN) > 0) {
/* dump it */
}
break;
}
}
}
/* we're done writing, or maybe we didn't write at all;
* force EOF on child's stdin so that the cgi detects end (or
* absence) of data
*/
shutdown(sd, 1);
/* Handle script return... */
if (!nph) {
const char *location;
char sbuf[MAX_STRING_LEN];
int ret;
bb = apr_brigade_create(r->pool, c->bucket_alloc);
b = apr_bucket_pipe_create(tempsock, c->bucket_alloc);
APR_BRIGADE_INSERT_TAIL(bb, b);
b = apr_bucket_eos_create(c->bucket_alloc);
APR_BRIGADE_INSERT_TAIL(bb, b);
if ((ret = ap_scan_script_header_err_brigade(r, bb, sbuf))) {
return log_script(r, conf, ret, dbuf, sbuf, bb, NULL);
}
location = apr_table_get(r->headers_out, "Location");
if (location && location[0] == '/' && r->status == 200) {
/* Soak up all the script output */
discard_script_output(bb);
apr_brigade_destroy(bb);
/* This redirect needs to be a GET no matter what the original
* method was.
*/
r->method = apr_pstrdup(r->pool, "GET");
r->method_number = M_GET;
/* We already read the message body (if any), so don't allow
* the redirected request to think it has one. We can ignore
* Transfer-Encoding, since we used REQUEST_CHUNKED_ERROR.
*/
apr_table_unset(r->headers_in, "Content-Length");
ap_internal_redirect_handler(location, r);
return OK;
}
else if (location && r->status == 200) {
/* XX Note that if a script wants to produce its own Redirect
* body, it now has to explicitly *say* "Status: 302"
*/
discard_script_output(bb);
apr_brigade_destroy(bb);
return HTTP_MOVED_TEMPORARILY;
}
if (!r->header_only) {
/* Passing our socket down the filter chain in a pipe bucket
* gives up the responsibility of closing the socket, so
* get rid of the cleanup.
*/
apr_pool_cleanup_kill(r->pool, (void *)sd, close_unix_socket);
ap_pass_brigade(r->output_filters, bb);
}
}
if (nph) {
struct ap_filter_t *cur;
/* Passing our socket down the filter chain in a pipe bucket
* gives up the responsibility of closing the socket, so
* get rid of the cleanup.
*/
apr_pool_cleanup_kill(r->pool, (void *)sd, close_unix_socket);
/* get rid of all filters up through protocol... since we
* haven't parsed off the headers, there is no way they can
* work
*/
cur = r->proto_output_filters;
while (cur && cur->frec->ftype < AP_FTYPE_CONNECTION) {
cur = cur->next;
}
r->output_filters = r->proto_output_filters = cur;
bb = apr_brigade_create(r->pool, c->bucket_alloc);
b = apr_bucket_pipe_create(tempsock, c->bucket_alloc);
APR_BRIGADE_INSERT_TAIL(bb, b);
b = apr_bucket_eos_create(c->bucket_alloc);
APR_BRIGADE_INSERT_TAIL(bb, b);
ap_pass_brigade(r->output_filters, bb);
}
return OK; /* NOT r->status, even if it has changed. */
}
/*============================================================================
*============================================================================
* This is the beginning of the cgi filter code moved from mod_include. This
* is the code required to handle the "exec" SSI directive.
*============================================================================
*============================================================================*/
static int include_cgi(char *s, request_rec *r, ap_filter_t *next,
apr_bucket *head_ptr, apr_bucket **inserted_head)
{
request_rec *rr = ap_sub_req_lookup_uri(s, r, next);
int rr_status;
apr_bucket *tmp_buck, *tmp2_buck;
if (rr->status != HTTP_OK) {
ap_destroy_sub_req(rr);
return -1;
}
/* No hardwired path info or query allowed */
if ((rr->path_info && rr->path_info[0]) || rr->args) {
ap_destroy_sub_req(rr);
return -1;
}
if (rr->finfo.filetype != APR_REG) {
ap_destroy_sub_req(rr);
return -1;
}
/* Script gets parameters of the *document*, for back compatibility */
rr->path_info = r->path_info; /* hard to get right; see mod_cgi.c */
rr->args = r->args;
/* Force sub_req to be treated as a CGI request, even if ordinary
* typing rules would have called it something else.
*/
ap_set_content_type(rr, CGI_MAGIC_TYPE);
/* Run it. */
rr_status = ap_run_sub_req(rr);
if (ap_is_HTTP_REDIRECT(rr_status)) {
apr_size_t len_loc;
const char *location = apr_table_get(rr->headers_out, "Location");
conn_rec *c = r->connection;
location = ap_escape_html(rr->pool, location);
len_loc = strlen(location);
/* XXX: if most of this stuff is going to get copied anyway,
* it'd be more efficient to pstrcat it into a single pool buffer
* and a single pool bucket */
tmp_buck = apr_bucket_immortal_create("<A HREF=\"",
sizeof("<A HREF=\"") - 1,
c->bucket_alloc);
APR_BUCKET_INSERT_BEFORE(head_ptr, tmp_buck);
tmp2_buck = apr_bucket_heap_create(location, len_loc, NULL,
c->bucket_alloc);
APR_BUCKET_INSERT_BEFORE(head_ptr, tmp2_buck);
tmp2_buck = apr_bucket_immortal_create("\">", sizeof("\">") - 1,
c->bucket_alloc);
APR_BUCKET_INSERT_BEFORE(head_ptr, tmp2_buck);
tmp2_buck = apr_bucket_heap_create(location, len_loc, NULL,
c->bucket_alloc);
APR_BUCKET_INSERT_BEFORE(head_ptr, tmp2_buck);
tmp2_buck = apr_bucket_immortal_create("</A>", sizeof("</A>") - 1,
c->bucket_alloc);
APR_BUCKET_INSERT_BEFORE(head_ptr, tmp2_buck);
if (*inserted_head == NULL) {
*inserted_head = tmp_buck;
}
}
ap_destroy_sub_req(rr);
return 0;
}
/* This is the special environment used for running the "exec cmd="
* variety of SSI directives.
*/
static void add_ssi_vars(request_rec *r, ap_filter_t *next)
{
apr_table_t *e = r->subprocess_env;
if (r->path_info && r->path_info[0] != '\0') {
request_rec *pa_req;
apr_table_setn(e, "PATH_INFO", ap_escape_shell_cmd(r->pool, r->path_info));
pa_req = ap_sub_req_lookup_uri(ap_escape_uri(r->pool, r->path_info), r, next);
if (pa_req->filename) {
apr_table_setn(e, "PATH_TRANSLATED",
apr_pstrcat(r->pool, pa_req->filename, pa_req->path_info, NULL));
}
ap_destroy_sub_req(pa_req);
}
if (r->args) {
char *arg_copy = apr_pstrdup(r->pool, r->args);
apr_table_setn(e, "QUERY_STRING", r->args);
ap_unescape_url(arg_copy);
apr_table_setn(e, "QUERY_STRING_UNESCAPED", ap_escape_shell_cmd(r->pool, arg_copy));
}
}
static int include_cmd(include_ctx_t *ctx, apr_bucket_brigade **bb, char *command,
request_rec *r, ap_filter_t *f)
{
char **env;
const char *location;
int sd;
apr_status_t rc = APR_SUCCESS;
int retval;
apr_bucket_brigade *bcgi;
apr_bucket *b;
apr_file_t *tempsock = NULL;
cgid_server_conf *conf = ap_get_module_config(r->server->module_config,
&cgid_module);
add_ssi_vars(r, f->next);
env = ap_create_environment(r->pool, r->subprocess_env);
if ((retval = connect_to_daemon(&sd, r, conf)) != OK) {
return retval;
}
SPLIT_AND_PASS_PRETAG_BUCKETS(*bb, ctx, f->next, rc);
if (rc != APR_SUCCESS) {
return rc;
}
send_req(sd, r, command, env, SSI_REQ);
/* We are putting the socket discriptor into an apr_file_t so that we can
* use a pipe bucket to send the data to the client.
* Note that this does not register a cleanup for the socket. We did
* that explicitly right after we created the socket.
*/
apr_os_file_put(&tempsock, &sd, 0, r->pool);
if ((retval = ap_setup_client_block(r, REQUEST_CHUNKED_ERROR)))
return retval;
location = apr_table_get(r->headers_out, "Location");
if (location && location[0] == '/' && r->status == 200) {
char argsbuffer[HUGE_STRING_LEN];
/* Soak up all the script output */
while (apr_file_gets(argsbuffer, HUGE_STRING_LEN,
tempsock) == APR_SUCCESS) {
continue;
}
/* This redirect needs to be a GET no matter what the original
* method was.
*/
r->method = apr_pstrdup(r->pool, "GET");
r->method_number = M_GET;
/* We already read the message body (if any), so don't allow
* the redirected request to think it has one. We can ignore
* Transfer-Encoding, since we used REQUEST_CHUNKED_ERROR.
*/
apr_table_unset(r->headers_in, "Content-Length");
ap_internal_redirect_handler(location, r);
return OK;
}
else if (location && r->status == 200) {
/* XX Note that if a script wants to produce its own Redirect
* body, it now has to explicitly *say* "Status: 302"
*/
return HTTP_MOVED_TEMPORARILY;
}
if (!r->header_only) {
/* Passing our socket down the filter chain in a pipe bucket
* gives up the responsibility of closing the socket, so
* get rid of the cleanup.
*/
apr_pool_cleanup_kill(r->pool, (void *)sd, close_unix_socket);
bcgi = apr_brigade_create(r->pool, r->connection->bucket_alloc);
b = apr_bucket_pipe_create(tempsock, r->connection->bucket_alloc);
APR_BRIGADE_INSERT_TAIL(bcgi, b);
ap_pass_brigade(f->next, bcgi);
}
return 0;
}
static int handle_exec(include_ctx_t *ctx, apr_bucket_brigade **bb, request_rec *r,
ap_filter_t *f, apr_bucket *head_ptr, apr_bucket **inserted_head)
{
char *tag = NULL;
char *tag_val = NULL;
char *file = r->filename;
apr_bucket *tmp_buck;
char parsed_string[MAX_STRING_LEN];
*inserted_head = NULL;
if (ctx->flags & FLAG_PRINTING) {
if (ctx->flags & FLAG_NO_EXEC) {
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
"exec used but not allowed in %s", r->filename);
CREATE_ERROR_BUCKET(ctx, tmp_buck, head_ptr, *inserted_head);
}
else {
while (1) {
cgid_pfn_gtv(ctx, &tag, &tag_val, 1);
if (tag_val == NULL) {
if (tag == NULL) {
return (0);
}
else {
return 1;
}
}
if (!strcmp(tag, "cmd")) {
cgid_pfn_ps(r, ctx, tag_val, parsed_string, sizeof(parsed_string), 1);
if (include_cmd(ctx, bb, parsed_string, r, f) == -1) {
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
"execution failure for parameter \"%s\" "
"to tag exec in file %s", tag, r->filename);
CREATE_ERROR_BUCKET(ctx, tmp_buck, head_ptr, *inserted_head);
}
/* just in case some stooge changed directories */
}
else if (!strcmp(tag, "cgi")) {
apr_status_t retval = APR_SUCCESS;
cgid_pfn_ps(r, ctx, tag_val, parsed_string, sizeof(parsed_string), 0);
SPLIT_AND_PASS_PRETAG_BUCKETS(*bb, ctx, f->next, retval);
if (retval != APR_SUCCESS) {
return retval;
}
if (include_cgi(parsed_string, r, f->next, head_ptr, inserted_head) == -1) {
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
"invalid CGI ref \"%s\" in %s", tag_val, file);
CREATE_ERROR_BUCKET(ctx, tmp_buck, head_ptr, *inserted_head);
}
}
else {
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
"unknown parameter \"%s\" to tag exec in %s", tag, file);
CREATE_ERROR_BUCKET(ctx, tmp_buck, head_ptr, *inserted_head);
}
}
}
}
return 0;
}
/*============================================================================
*============================================================================
* This is the end of the cgi filter code moved from mod_include.
*============================================================================
*============================================================================*/
static void register_hook(apr_pool_t *p)
{
static const char * const aszPre[] = { "mod_include.c", NULL };
ap_hook_post_config(cgid_init, aszPre, NULL, APR_HOOK_MIDDLE);
ap_hook_handler(cgid_handler, NULL, NULL, APR_HOOK_MIDDLE);
}
module AP_MODULE_DECLARE_DATA cgid_module = {
STANDARD20_MODULE_STUFF,
NULL, /* dir config creater */
NULL, /* dir merger --- default is to override */
create_cgid_config, /* server config */
merge_cgid_config, /* merge server config */
cgid_cmds, /* command table */
register_hook /* register_handlers */
};