mod_cgi.c revision 1d509de8742bc4904aad80d982650393cd5bc1f3
fa9e4066f08beec538e775443c5be79dd423fcabahrens/* ====================================================================
fa9e4066f08beec538e775443c5be79dd423fcabahrens * The Apache Software License, Version 1.1
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Copyright (c) 2000-2003 The Apache Software Foundation. All rights
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock * reserved.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Redistribution and use in source and binary forms, with or without
fa9e4066f08beec538e775443c5be79dd423fcabahrens * modification, are permitted provided that the following conditions
fa9e4066f08beec538e775443c5be79dd423fcabahrens * 1. Redistributions of source code must retain the above copyright
fa9e4066f08beec538e775443c5be79dd423fcabahrens * notice, this list of conditions and the following disclaimer.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * 2. Redistributions in binary form must reproduce the above copyright
fa9e4066f08beec538e775443c5be79dd423fcabahrens * notice, this list of conditions and the following disclaimer in
fa9e4066f08beec538e775443c5be79dd423fcabahrens * the documentation and/or other materials provided with the
fa9e4066f08beec538e775443c5be79dd423fcabahrens * distribution.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * 3. The end-user documentation included with the redistribution,
fa9e4066f08beec538e775443c5be79dd423fcabahrens * if any, must include the following acknowledgment:
fa9e4066f08beec538e775443c5be79dd423fcabahrens * "This product includes software developed by the
e6032be1b8a5a1d03081e0d62b624db95c4cf8b7marks * Apache Software Foundation (http://www.apache.org/)."
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Alternately, this acknowledgment may appear in the software itself,
fa9e4066f08beec538e775443c5be79dd423fcabahrens * if and wherever such third-party acknowledgments normally appear.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * 4. The names "Apache" and "Apache Software Foundation" must
fa9e4066f08beec538e775443c5be79dd423fcabahrens * not be used to endorse or promote products derived from this
fa9e4066f08beec538e775443c5be79dd423fcabahrens * software without prior written permission. For written
fa9e4066f08beec538e775443c5be79dd423fcabahrens * permission, please contact apache@apache.org.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * 5. Products derived from this software may not be called "Apache",
fa9e4066f08beec538e775443c5be79dd423fcabahrens * nor may "Apache" appear in their name, without prior written
fa9e4066f08beec538e775443c5be79dd423fcabahrens * permission of the Apache Software Foundation.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
fa9e4066f08beec538e775443c5be79dd423fcabahrens * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
fa9e4066f08beec538e775443c5be79dd423fcabahrens * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
fa9e4066f08beec538e775443c5be79dd423fcabahrens * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
fa9e4066f08beec538e775443c5be79dd423fcabahrens * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
fa9e4066f08beec538e775443c5be79dd423fcabahrens * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
fa9e4066f08beec538e775443c5be79dd423fcabahrens * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
169cdae232f15e542d6af0a9ce30c3f84222bc0fmarks * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
fa9e4066f08beec538e775443c5be79dd423fcabahrens * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
fa9e4066f08beec538e775443c5be79dd423fcabahrens * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
fa9e4066f08beec538e775443c5be79dd423fcabahrens * SUCH DAMAGE.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * ====================================================================
fa9e4066f08beec538e775443c5be79dd423fcabahrens * This software consists of voluntary contributions made by many
fa9e4066f08beec538e775443c5be79dd423fcabahrens * individuals on behalf of the Apache Software Foundation. For more
fa9e4066f08beec538e775443c5be79dd423fcabahrens * information on the Apache Software Foundation, please see
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Portions of this software are based upon public domain software
fa9e4066f08beec538e775443c5be79dd423fcabahrens * originally written at the National Center for Supercomputing Applications,
fa9e4066f08beec538e775443c5be79dd423fcabahrens * University of Illinois, Urbana-Champaign.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * http_script: keeps all script-related ramblings together.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Compliant to CGI/1.1 spec
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Adapted by rst from original NCSA code by Rob McCool
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Apache adds some new env vars; REDIRECT_URL and REDIRECT_QUERY_STRING for
fa9e4066f08beec538e775443c5be79dd423fcabahrens * custom error responses, and DOCUMENT_ROOT because we found it useful.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * It also adds SERVER_ADMIN - useful for scripts to know who to mail when
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * they fail.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwstatic APR_OPTIONAL_FN_TYPE(ap_register_include_handler) *cgi_pfn_reg_with_ssi;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwstatic APR_OPTIONAL_FN_TYPE(ap_ssi_get_tag_and_value) *cgi_pfn_gtv;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwstatic APR_OPTIONAL_FN_TYPE(ap_ssi_parse_string) *cgi_pfn_ps;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwstatic APR_OPTIONAL_FN_TYPE(ap_cgi_build_command) *cgi_build_command;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw/* Read and discard the data in the brigade produced by a CGI script */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwstatic void discard_script_output(apr_bucket_brigade *bb);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw/* KLUDGE --- for back-combatibility, we don't have to check ExecCGI
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * in ScriptAliased directories, which means we need to know if this
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * request came through ScriptAlias or not... so the Alias module
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * leaves a note for us.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw const char *t = apr_table_get(r->notes, "alias-forced-type");
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw/* Configuration stuff */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwtypedef struct {
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw const char *logname;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwstatic void *create_cgi_config(apr_pool_t *p, server_rec *s)
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw (cgi_server_conf *) apr_pcalloc(p, sizeof(cgi_server_conf));
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwstatic void *merge_cgi_config(apr_pool_t *p, void *basev, void *overridesv)
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwstatic const char *set_scriptlog(cmd_parms *cmd, void *dummy, const char *arg)
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw cgi_server_conf *conf = ap_get_module_config(s->module_config,
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw conf->logname = ap_server_root_relative(cmd->pool, arg);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw return apr_pstrcat(cmd->pool, "Invalid ScriptLog path ",
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwstatic const char *set_scriptlog_length(cmd_parms *cmd, void *dummy,
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw const char *arg)
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw cgi_server_conf *conf = ap_get_module_config(s->module_config,
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwstatic const char *set_scriptlog_buffer(cmd_parms *cmd, void *dummy,
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw const char *arg)
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw cgi_server_conf *conf = ap_get_module_config(s->module_config,
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwAP_INIT_TAKE1("ScriptLog", set_scriptlog, NULL, RSRC_CONF,
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw "the name of a log for script debugging info"),
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwAP_INIT_TAKE1("ScriptLogLength", set_scriptlog_length, NULL, RSRC_CONF,
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw "the maximum length (in bytes) of the script debug log"),
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwAP_INIT_TAKE1("ScriptLogBuffer", set_scriptlog_buffer, NULL, RSRC_CONF,
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw "the maximum size (in bytes) to record of a POST request"),
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwstatic int log_scripterror(request_rec *r, cgi_server_conf * conf, int ret,
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw /* XXX Very expensive mainline case! Open, then getfileinfo! */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw /* "%% [Wed Jun 19 10:53:21 1996] GET /cgi-bin/printenv HTTP/1.0" */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw apr_file_printf(f, "%%%% [%s] %s %s%s%s %s\n", time_str, r->method, r->uri,
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw r->args ? "?" : "", r->args ? r->args : "", r->protocol);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw/* Soak up stderr from a script and redirect it to the error log.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwstatic void log_script_err(request_rec *r, apr_file_t *script_err)
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwstatic int log_script(request_rec *r, cgi_server_conf * conf, int ret,
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw const apr_array_header_t *hdrs_arr = apr_table_elts(r->headers_in);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw const apr_table_entry_t *hdrs = (const apr_table_entry_t *) hdrs_arr->elts;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw const char *buf;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw /* XXX Very expensive mainline case! Open, then getfileinfo! */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw /* Soak up script output */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw /* "%% [Wed Jun 19 10:53:21 1996] GET /cgi-bin/printenv HTTP/1.0" */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw apr_file_printf(f, "%%%% [%s] %s %s%s%s %s\n", time_str, r->method, r->uri,
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw r->args ? "?" : "", r->args ? r->args : "", r->protocol);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw apr_file_printf(f, "%s: %s\n", hdrs[i].key, hdrs[i].val);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if ((r->method_number == M_POST || r->method_number == M_PUT) &&
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw apr_file_printf(f, "%s: %s\n", hdrs[i].key, hdrs[i].val);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if (apr_file_gets(argsbuffer, HUGE_STRING_LEN, script_err) == APR_SUCCESS) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens/* This is the special environment used for running the "exec cmd="
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * variety of SSI directives.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw apr_table_setn(e, "PATH_INFO", ap_escape_shell_cmd(r->pool,
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw pa_req = ap_sub_req_lookup_uri(ap_escape_uri(r->pool, r->path_info),
fa9e4066f08beec538e775443c5be79dd423fcabahrensstatic void cgi_child_errfn(apr_pool_t *pool, apr_status_t err,
2459a9eaca6b6525c76289d22ffe4c96be1956d6marks const char *description)
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw ap_log_rerror(APLOG_MARK, APLOG_ERR, err, r, "%s", description);
fa9e4066f08beec538e775443c5be79dd423fcabahrensstatic apr_status_t run_cgi_child(apr_file_t **script_out,
fa9e4066f08beec538e775443c5be79dd423fcabahrens const char *command,
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw const char * const argv[],
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw const char * const *env;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw defined(RLIMIT_DATA) || defined(RLIMIT_VMEM) || defined (RLIMIT_AS)
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw core_dir_config *conf = ap_get_module_config(r->per_dir_config,
fa9e4066f08beec538e775443c5be79dd423fcabahrens /* Under OS/2 need to use device con. */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw fprintf(dbg, "Attempting to exec %s as CGI child (argv0 = %s)\n",
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw env = (const char * const *)ap_create_environment(p, r->subprocess_env);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw for (i = 0; env[i]; ++i)
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw /* Transmute ourselves into the script.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * NB only ISINDEX scripts get decoded arguments.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if (((rc = apr_procattr_create(&procattr, p)) != APR_SUCCESS) ||
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw#if defined(RLIMIT_DATA) || defined(RLIMIT_VMEM) || defined(RLIMIT_AS)
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw ((rc = apr_procattr_limit_set(procattr, APR_LIMIT_NPROC,
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw ((rc = apr_procattr_child_errfn_set(procattr, cgi_child_errfn)) != APR_SUCCESS)) {
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw /* Something bad happened, tell the world. */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw "couldn't set child process attributes: %s", r->filename);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw apr_pool_userdata_set(r, ERRFN_USERDATA_KEY, apr_pool_cleanup_null, p);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw SPLIT_AND_PASS_PRETAG_BUCKETS(*(e_info->bb), e_info->ctx,
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw rc = ap_os_create_privileged_process(r, procnew, command, argv, env,
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw /* Bad things happened. Everyone should have cleaned up. */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_TOCLIENT, rc, r,
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw apr_pool_note_subprocess(p, procnew, APR_KILL_AFTER_TIMEOUT);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw apr_file_pipe_timeout_set(*script_in, r->server->timeout);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw apr_file_pipe_timeout_set(*script_out, r->server->timeout);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw apr_file_pipe_timeout_set(*script_err, r->server->timeout);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwstatic apr_status_t default_build_command(const char **cmd, const char ***argv,
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw /* Do not process r->args if they contain an '=' assignment
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if (r->args && r->args[0] && !ap_strchr_c(r->args, '=')) {
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw /* count the number of keywords */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw /* Everything is - 1 to account for the first parameter
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * which is the program name.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw numwords = APACHE_ARG_MAX - 1; /* Truncate args to prevent overrun */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwstatic void discard_script_output(apr_bucket_brigade *bb)
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw const char *buf;
bda89588bd7667394a834e8a9a34612cce2ae9c3jp const char *argv0;
bda89588bd7667394a834e8a9a34612cce2ae9c3jp const char *command;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw const char **argv;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw apr_file_t *script_out = NULL, *script_in = NULL, *script_err = NULL;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if(strcmp(r->handler, CGI_MAGIC_TYPE) && strcmp(r->handler, "cgi-script"))
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw /* 99 out of 100 CGI scripts, this is all they support */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw conf = ap_get_module_config(r->server->module_config, &cgi_module);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if (!(ap_allow_options(r) & OPT_EXECCGI) && !is_scriptaliased(r))
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw "Options ExecCGI is off in this directory");
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw "attempt to include NPH CGI script");
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw "script not found or unable to stat");
e0d35c4478bf9fd4080951b5b9d1f9a38948ba69marks "attempt to invoke directory as script");
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw /* default to accept */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw "AcceptPathInfo off disallows user's path");
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if (!ap_suexec_enabled) {
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if (!ap_can_exec(&r->finfo))
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw return log_scripterror(r, conf, HTTP_FORBIDDEN, 0,
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw "file permissions deny server execution");
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw /* build the command line */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if ((rv = cgi_build_command(&command, &argv, r, p, &e_info)) != APR_SUCCESS) {
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw "don't know how to spawn child process: %s",
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw /* run the script in its own process */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if ((rv = run_cgi_child(&script_out, &script_in, &script_err,
2459a9eaca6b6525c76289d22ffe4c96be1956d6marks /* Transfer any put/post args, CERN style...
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * Note that we already ignore SIGPIPE in the core server.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw bb = apr_brigade_create(r->pool, r->connection->bucket_alloc);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw rv = ap_get_brigade(r->input_filters, bb, AP_MODE_READBYTES,
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw const char *data;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw /* We can't do much with this. */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw /* If the child stopped, we still must read to EOS. */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw /* Keep writing data to the child until done or too much time
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * elapses with no progress or an error occurs.
fa9e4066f08beec538e775443c5be79dd423fcabahrens rv = apr_file_write_full(script_out, data, len, NULL);
fa9e4066f08beec538e775443c5be79dd423fcabahrens /* silly script stopped reading, soak up remaining message */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw /* Is this flush really needed? */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw /* Handle script return... */
fa9e4066f08beec538e775443c5be79dd423fcabahrens const char *location;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if ((ret = ap_scan_script_header_err_brigade(r, bb, sbuf))) {
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw return log_script(r, conf, ret, dbuf, sbuf, bb, script_err);
fa9e4066f08beec538e775443c5be79dd423fcabahrens location = apr_table_get(r->headers_out, "Location");
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if (location && location[0] == '/' && r->status == 200) {
29a0b7379cd3103841d05e3ed04486412049acccmarks /* This redirect needs to be a GET no matter what the original
e6032be1b8a5a1d03081e0d62b624db95c4cf8b7marks * method was.
fa9e4066f08beec538e775443c5be79dd423fcabahrens /* We already read the message body (if any), so don't allow
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * the redirected request to think it has one. We can ignore
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Transfer-Encoding, since we used REQUEST_CHUNKED_ERROR.
fa9e4066f08beec538e775443c5be79dd423fcabahrens /* XX Note that if a script wants to produce its own Redirect
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * body, it now has to explicitly *say* "Status: 302"
fa9e4066f08beec538e775443c5be79dd423fcabahrens /* don't soak up script output if errors occurred
fa9e4066f08beec538e775443c5be79dd423fcabahrens * writing it out... otherwise, we prolong the
fa9e4066f08beec538e775443c5be79dd423fcabahrens * life of the script when the connection drops
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * or we stopped sending output for some other
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw /* get rid of all filters up through protocol... since we
fa9e4066f08beec538e775443c5be79dd423fcabahrens * haven't parsed off the headers, there is no way they can
fa9e4066f08beec538e775443c5be79dd423fcabahrens while (cur && cur->frec->ftype < AP_FTYPE_CONNECTION) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens b = apr_bucket_pipe_create(script_in, c->bucket_alloc);
fa9e4066f08beec538e775443c5be79dd423fcabahrens return OK; /* NOT r->status, even if it has changed. */
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*============================================================================
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw *============================================================================
fa9e4066f08beec538e775443c5be79dd423fcabahrens * This is the beginning of the cgi filter code moved from mod_include. This
fa9e4066f08beec538e775443c5be79dd423fcabahrens * is the code required to handle the "exec" SSI directive.
fa9e4066f08beec538e775443c5be79dd423fcabahrens *============================================================================
fa9e4066f08beec538e775443c5be79dd423fcabahrens *============================================================================*/
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwstatic int include_cgi(char *s, request_rec *r, ap_filter_t *next,
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw return -1;
fa9e4066f08beec538e775443c5be79dd423fcabahrens /* No hardwired path info or query allowed */
fa9e4066f08beec538e775443c5be79dd423fcabahrens if ((rr->path_info && rr->path_info[0]) || rr->args) {
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw return -1;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw /* Script gets parameters of the *document*, for back compatibility */
fa9e4066f08beec538e775443c5be79dd423fcabahrens rr->path_info = r->path_info; /* hard to get right; see mod_cgi.c */
fa9e4066f08beec538e775443c5be79dd423fcabahrens /* Force sub_req to be treated as a CGI request, even if ordinary
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * typing rules would have called it something else.
fa9e4066f08beec538e775443c5be79dd423fcabahrens /* Run it. */
fa9e4066f08beec538e775443c5be79dd423fcabahrens const char *location = apr_table_get(rr->headers_out, "Location");
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw /* XXX: if most of this stuff is going to get copied anyway,
bda89588bd7667394a834e8a9a34612cce2ae9c3jp * it'd be more efficient to pstrcat it into a single pool buffer
e0d35c4478bf9fd4080951b5b9d1f9a38948ba69marks * and a single pool bucket */
fa9e4066f08beec538e775443c5be79dd423fcabahrens tmp2_buck = apr_bucket_heap_create(location, len_loc, NULL,
fa9e4066f08beec538e775443c5be79dd423fcabahrens tmp2_buck = apr_bucket_immortal_create("\">", sizeof("\">") - 1,
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw tmp2_buck = apr_bucket_heap_create(location, len_loc, NULL,
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw tmp2_buck = apr_bucket_immortal_create("</A>", sizeof("</A>") - 1,
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwstatic int include_cmd(include_ctx_t *ctx, apr_bucket_brigade **bb,
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw const char **argv;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw apr_file_t *script_out = NULL, *script_in = NULL, *script_err = NULL;
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock if ((rv = cgi_build_command(&command, &argv, r, r->pool, &e_info)) != APR_SUCCESS) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens "don't know how to spawn cmd child process: %s",
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock /* run the script in its own process */
fa9e4066f08beec538e775443c5be79dd423fcabahrens if ((rv = run_cgi_child(&script_out, &script_in, &script_err,
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw b = apr_bucket_pipe_create(script_in, f->c->bucket_alloc);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw /* We can't close the pipe here, because we may return before the
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * full CGI has been sent to the network. That's okay though,
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * because we can rely on the pool to close the pipe for us.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwstatic int handle_exec(include_ctx_t *ctx, apr_bucket_brigade **bb,
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock request_rec *r, ap_filter_t *f, apr_bucket *head_ptr,
fa9e4066f08beec538e775443c5be79dd423fcabahrens CREATE_ERROR_BUCKET(ctx, tmp_buck, head_ptr, *inserted_head);
bda89588bd7667394a834e8a9a34612cce2ae9c3jp while (1) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (include_cmd(ctx, bb, parsed_string, r, f) == -1) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens "execution failure for parameter \"%s\" "
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw sizeof(parsed_string), 0);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw SPLIT_AND_PASS_PRETAG_BUCKETS(*bb, ctx, f->next, retval);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw "invalid CGI ref \"%s\" in %s",
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw "unknown parameter \"%s\" to tag exec in %s",
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*============================================================================
fa9e4066f08beec538e775443c5be79dd423fcabahrens *============================================================================
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * This is the end of the cgi filter code moved from mod_include.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw *============================================================================
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw *============================================================================*/
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwstatic int cgi_post_config(apr_pool_t *p, apr_pool_t *plog,
fa9e4066f08beec538e775443c5be79dd423fcabahrens cgi_pfn_reg_with_ssi = APR_RETRIEVE_OPTIONAL_FN(ap_register_include_handler);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw cgi_pfn_gtv = APR_RETRIEVE_OPTIONAL_FN(ap_ssi_get_tag_and_value);
fa9e4066f08beec538e775443c5be79dd423fcabahrens cgi_pfn_ps = APR_RETRIEVE_OPTIONAL_FN(ap_ssi_parse_string);
fa9e4066f08beec538e775443c5be79dd423fcabahrens if ((cgi_pfn_reg_with_ssi) && (cgi_pfn_gtv) && (cgi_pfn_ps)) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens /* Required by mod_include filter. This is how mod_cgi registers
fa9e4066f08beec538e775443c5be79dd423fcabahrens * with mod_include to provide processing of the exec directive.
fa9e4066f08beec538e775443c5be79dd423fcabahrens /* This is the means by which unusual (non-unix) os's may find alternate
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * means to run a given command (e.g. shebang/registry parsing on Win32)
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw cgi_build_command = APR_RETRIEVE_OPTIONAL_FN(ap_cgi_build_command);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw static const char * const aszPre[] = { "mod_include.c", NULL };
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw ap_hook_handler(cgi_handler, NULL, NULL, APR_HOOK_MIDDLE);