mod_cgid.c revision 12901074f5d6b36d08be84d8637b6f2c21e0da26
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering/* ====================================================================
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * The Apache Software License, Version 1.1
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Copyright (c) 2000-2002 The Apache Software Foundation. All rights
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Redistribution and use in source and binary forms, with or without
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * modification, are permitted provided that the following conditions
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * 1. Redistributions of source code must retain the above copyright
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * notice, this list of conditions and the following disclaimer.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * 2. Redistributions in binary form must reproduce the above copyright
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * notice, this list of conditions and the following disclaimer in
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * the documentation and/or other materials provided with the
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * distribution.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * 3. The end-user documentation included with the redistribution,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * if any, must include the following acknowledgment:
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * "This product includes software developed by the
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Apache Software Foundation (http://www.apache.org/)."
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Alternately, this acknowledgment may appear in the software itself,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * if and wherever such third-party acknowledgments normally appear.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * 4. The names "Apache" and "Apache Software Foundation" must
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * not be used to endorse or promote products derived from this
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * software without prior written permission. For written
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * permission, please contact apache@apache.org.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * 5. Products derived from this software may not be called "Apache",
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * nor may "Apache" appear in their name, without prior written
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * permission of the Apache Software Foundation.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
db73295accbec0c6513817f0a64a92018592bb26Lennart Poettering * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * SUCH DAMAGE.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * ====================================================================
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * This software consists of voluntary contributions made by many
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * individuals on behalf of the Apache Software Foundation. For more
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * information on the Apache Software Foundation, please see
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Portions of this software are based upon public domain software
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * originally written at the National Center for Supercomputing Applications,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * University of Illinois, Urbana-Champaign.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * http_script: keeps all script-related ramblings together.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Compliant to cgi/1.1 spec
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Adapted by rst from original NCSA code by Rob McCool
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
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering/* ### should be tossed in favor of APR */
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poetteringmodule AP_MODULE_DECLARE_DATA cgid_module;
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 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/* 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/* 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 Poetteringstatic int is_scriptaliased(request_rec *r)
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering const char *t = apr_table_get(r->notes, "alias-forced-type");
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering return t && (!strcasecmp(t, "cgi-script"));
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering/* Configuration stuff */
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering#define DEFAULT_SOCKET DEFAULT_REL_RUNTIMEDIR "/cgisock"
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/* 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 * Set this to 0 to continually retry until the connect works or Apache
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poetteringtypedef struct {
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 Poetteringstatic char **create_argv(apr_pool_t *p, char *path, char *user, char *group,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering /* count the number of keywords */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering for (x = 0, numwords = 1; args[x]; x++) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering numwords = APACHE_ARG_MAX - 5; /* Truncate args to prevent overrun */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering av = (char **) apr_pcalloc(p, (numwords + 5) * sizeof(char *));
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poetteringstatic void cgid_maint(int reason, void *data, apr_wait_t status)
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering /* don't do anything; server is stopping or restarting */
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 /* we get here when pcgi is cleaned up; pcgi gets cleaned
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * up when pconf gets cleaned up
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering kill(*sd, SIGHUP); /* send signal to daemon telling it to die */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poetteringstatic int get_req(int fd, request_rec *r, char **argv0, char ***env, int *req_type)
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering unsigned char *data;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering module *suexec_mod = ap_find_linked_module("mod_suexec.c");
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering r->server = apr_pcalloc(r->pool, sizeof(server_rec));
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (rc != sizeof(int)) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (rc != sizeof(int)) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (rc != sizeof(int)) {
ab1525bc2d92780b4dc64bc5b9cdb52594e2df7dLennart Poettering data = apr_pcalloc(r->pool, len + 1); /* get a cleared byte for final '\0' */
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 r->uri = ap_getword(r->pool, (const char **)&data, '\n');
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering environ = apr_pcalloc(r->pool, (j + 2) *sizeof(char *));
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering for (i = 0; i < j; i++) {
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering environ[i] = ap_getword(r->pool, (const char **)&data, '\n');
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering r->args = ap_getword(r->pool, (const char **)&data, '\n');
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering if (rc != sizeof(int)) {
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering /* add 1, so that if i == 0, we still malloc something. */
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering dconf = (void **) apr_pcalloc(r->pool, sizeof(void *) * (total_modules + DYNAMIC_MODULE_LIMIT));
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering temp_core = (core_dir_config *)apr_palloc(r->pool, sizeof(core_module));
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering suexec_config_t *suexec_cfg = apr_pcalloc(r->pool, sizeof(*suexec_cfg));
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering if (rc != sizeof(int)) {
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering rc = read(fd, &suexec_cfg->ugid.uid, sizeof(uid_t));
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering rc = read(fd, &suexec_cfg->ugid.gid, sizeof(gid_t));
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering rc = read(fd, &suexec_cfg->active, sizeof(int));
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering if (rc != sizeof(int)) {
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering r->per_dir_config = (ap_conf_vector_t *)dconf;
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering temp_core->limit_cpu = (struct rlimit *)apr_palloc (sizeof(struct rlimit));
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering read(fd, temp_core->limit_cpu, sizeof(struct rlimit));
d6731e4c7964ee2860d4f5abdb0b52acd7a66960Tom Gundersen#if defined (RLIMIT_DATA) || defined(RLIMIT_VMEM) || defined(RLIMIT_AS)
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));
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));
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 Poetteringstatic void send_req(int fd, request_rec *r, char *argv0, char **env, int req_type)
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering module *suexec_mod = ap_find_linked_module("mod_suexec.c");
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering data = apr_pstrcat(r->pool, r->filename, "\n", argv0, "\n", r->uri, "\n",
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering for (i =0; env[i]; i++) {
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 /* Write the number of entries in the environment. */
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering "write to cgi daemon process");
db73295accbec0c6513817f0a64a92018592bb26Lennart Poettering for (i = 0; env[i]; i++) {
db73295accbec0c6513817f0a64a92018592bb26Lennart Poettering data = apr_pstrcat(r->pool, data, env[i], "\n", NULL);
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering data = apr_pstrcat(r->pool, data, r->args, NULL);
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering /* Write the length of the concatenated env string. */
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering "write to cgi daemon process");
2301cb9fdb774d0a1b3d8f5e95c5d358721ccacbLennart Poettering /* Write the concatted env string. */
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering "write to cgi daemon process");
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 suexec_config_t *suexec_cfg = ap_get_module_config(r->per_dir_config,
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 write(fd, conf->limit_cpu, sizeof(struct rlimit));
03cc0fd1431b82e59c11ae12a274c1f2df23169dLennart Poettering#if defined(RLIMIT_DATA) || defined(RLIMIT_VMEM) || defined(RLIMIT_AS)
03cc0fd1431b82e59c11ae12a274c1f2df23169dLennart Poettering write(fd, conf->limit_mem, sizeof(struct rlimit));
f7d68aa8c9430dfddee5f913f93b405a5d75723aLennart Poettering write(fd, conf->limit_nproc, sizeof(struct rlimit));
03cc0fd1431b82e59c11ae12a274c1f2df23169dLennart Poetteringstatic void daemon_signal_handler(int sig)
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering cgid_server_conf *sconf = ap_get_module_config(main_server->module_config,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering apr_signal(SIGHUP, daemon_signal_handler);
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",
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering /* just a warning; don't bail out */
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");
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering memset(&unix_addr, 0, sizeof(unix_addr));
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering strcpy(unix_addr.sun_path, sconf->sockname);
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 */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering "Couldn't bind unix domain socket %s",
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");
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 unixd_setup_child(); /* if running as root, switch to configured user/group */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering const char * const *argv;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering sd2 = accept(sd, (struct sockaddr *)&unix_addr, &len);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering ap_log_error(APLOG_MARK, APLOG_ERR, errno,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering "Error accepting on cgid socket");
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering r = apr_pcalloc(ptrans, sizeof(request_rec));
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering procnew = apr_pcalloc(ptrans, sizeof(*procnew));
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering rc = get_req(sd2, r, &argv0, &env, &req_type);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering "Error reading request on cgid socket");
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);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (((rc = apr_procattr_create(&procattr, ptrans)) != 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 ((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 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 argv = (const char * const *)create_argv(r->pool, NULL, NULL, NULL, argv0, r->args);
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 rc = ap_os_create_privileged_process(r, procnew, argv0, argv,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering (const char * const *)env,
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 Poetteringstatic int cgid_init(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering apr_pool_userdata_get(&data, userdata_key, main_server->process->pool);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering apr_pool_userdata_set((const void *)1, userdata_key,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering apr_pool_cleanup_null, main_server->process->pool);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering for (m = ap_preloaded_modules; *m != NULL; m++)
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering daemon_should_exit = 0; /* clear setting from previous generation */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering "mod_cgid: Couldn't spawn cgid daemon process");
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering else if (daemon_pid == 0) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering procnew = apr_pcalloc(p, sizeof(*procnew));
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering procnew->err = procnew->in = procnew->out = NULL;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering apr_pool_note_subprocess(p, procnew, APR_KILL_AFTER_TIMEOUT);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering apr_proc_other_child_register(procnew, cgid_maint, &procnew->pid, NULL, p);
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 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.
return OK;
cgid_server_conf *c =
&cgid_module);
return NULL;
&cgid_module);
return NULL;
&cgid_module);
return NULL;
&cgid_module);
return NULL;
{NULL}
return ret;
apr_file_close(f);
return ret;
apr_bucket *e;
const char *buf;
int first;
if (script_err) {
return ret;
&& *dbuf) {
if (APR_BUCKET_IS_EOS(e)) {
if (first) {
first = 0;
if (script_err) {
if (script_err) {
apr_file_close(f);
return ret;
int sd;
int connect_tries;
connect_tries = 0;
return OK;
apr_bucket *e;
const char *buf;
if (APR_BUCKET_IS_EOS(e)) {
apr_bucket *b;
int is_included;
int sd;
char **env;
return DECLINED;
return DECLINED;
argv0++;
argv0++;
ap_add_cgi_vars(r);
return retval;
return retval;
argv0++;
if (ap_should_client_block(r)) {
dbpos = 0;
while ((len_read =
if (!nph) {
const char *location;
int ret;
return OK;
return HTTP_MOVED_TEMPORARILY;
if (!r->header_only) {
if (nph) {
int rr_status;
c->bucket_alloc);
c->bucket_alloc);
c->bucket_alloc);
c->bucket_alloc);
c->bucket_alloc);
if (r->args) {
char **env;
const char *location;
int sd;
int retval;
apr_bucket *b;
&cgid_module);
return retval;
return rc;
return retval;
return OK;
return HTTP_MOVED_TEMPORARILY;
if (!r->header_only) {
return retval;