modules/generators/mod_cgi.c

	mod_cgi.c revision cb5134e26dede7d8a7439c5dd5f054750e42947b
c6d33447e28403a90ad817dba4df75fae785be28pquerna/* ====================================================================
c6d33447e28403a90ad817dba4df75fae785be28pquerna * Copyright (c) 1995-1999 The Apache Group.  All rights reserved.
c6d33447e28403a90ad817dba4df75fae785be28pquerna *
c6d33447e28403a90ad817dba4df75fae785be28pquerna * Redistribution and use in source and binary forms, with or without
c6d33447e28403a90ad817dba4df75fae785be28pquerna * modification, are permitted provided that the following conditions
c6d33447e28403a90ad817dba4df75fae785be28pquerna * are met:
c6d33447e28403a90ad817dba4df75fae785be28pquerna *
c6d33447e28403a90ad817dba4df75fae785be28pquerna * 1. Redistributions of source code must retain the above copyright
c6d33447e28403a90ad817dba4df75fae785be28pquerna *    notice, this list of conditions and the following disclaimer.
c6d33447e28403a90ad817dba4df75fae785be28pquerna *
c6d33447e28403a90ad817dba4df75fae785be28pquerna * 2. Redistributions in binary form must reproduce the above copyright
c6d33447e28403a90ad817dba4df75fae785be28pquerna *    notice, this list of conditions and the following disclaimer in
c6d33447e28403a90ad817dba4df75fae785be28pquerna *    the documentation and/or other materials provided with the
c6d33447e28403a90ad817dba4df75fae785be28pquerna *    distribution.
c6d33447e28403a90ad817dba4df75fae785be28pquerna *
c6d33447e28403a90ad817dba4df75fae785be28pquerna * 3. All advertising materials mentioning features or use of this
c6d33447e28403a90ad817dba4df75fae785be28pquerna *    software must display the following acknowledgment:
c6d33447e28403a90ad817dba4df75fae785be28pquerna *    "This product includes software developed by the Apache Group
c6d33447e28403a90ad817dba4df75fae785be28pquerna *    for use in the Apache HTTP server project (http://www.apache.org/)."
c6d33447e28403a90ad817dba4df75fae785be28pquerna *
c6d33447e28403a90ad817dba4df75fae785be28pquerna * 4. The names "Apache Server" and "Apache Group" must not be used to
c6d33447e28403a90ad817dba4df75fae785be28pquerna *    endorse or promote products derived from this software without
c6d33447e28403a90ad817dba4df75fae785be28pquerna *    prior written permission. For written permission, please contact
c6d33447e28403a90ad817dba4df75fae785be28pquerna *    apache@apache.org.
c6d33447e28403a90ad817dba4df75fae785be28pquerna *
c6d33447e28403a90ad817dba4df75fae785be28pquerna * 5. Products derived from this software may not be called "Apache"
c6d33447e28403a90ad817dba4df75fae785be28pquerna *    nor may "Apache" appear in their names without prior written
c6d33447e28403a90ad817dba4df75fae785be28pquerna *    permission of the Apache Group.
c6d33447e28403a90ad817dba4df75fae785be28pquerna *
c6d33447e28403a90ad817dba4df75fae785be28pquerna * 6. Redistributions of any form whatsoever must retain the following
c6d33447e28403a90ad817dba4df75fae785be28pquerna *    acknowledgment:
c6d33447e28403a90ad817dba4df75fae785be28pquerna *    "This product includes software developed by the Apache Group
c6d33447e28403a90ad817dba4df75fae785be28pquerna *    for use in the Apache HTTP server project (http://www.apache.org/)."
c6d33447e28403a90ad817dba4df75fae785be28pquerna *
c6d33447e28403a90ad817dba4df75fae785be28pquerna * THIS SOFTWARE IS PROVIDED BY THE APACHE GROUP ``AS IS'' AND ANY
c6d33447e28403a90ad817dba4df75fae785be28pquerna * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
c6d33447e28403a90ad817dba4df75fae785be28pquerna * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
c6d33447e28403a90ad817dba4df75fae785be28pquerna * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE APACHE GROUP OR
c6d33447e28403a90ad817dba4df75fae785be28pquerna * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
c6d33447e28403a90ad817dba4df75fae785be28pquerna * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
c6d33447e28403a90ad817dba4df75fae785be28pquerna * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
c6d33447e28403a90ad817dba4df75fae785be28pquerna * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
c6d33447e28403a90ad817dba4df75fae785be28pquerna * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
c6d33447e28403a90ad817dba4df75fae785be28pquerna * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
c6d33447e28403a90ad817dba4df75fae785be28pquerna * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
c6d33447e28403a90ad817dba4df75fae785be28pquerna * OF THE POSSIBILITY OF SUCH DAMAGE.
c6d33447e28403a90ad817dba4df75fae785be28pquerna * ====================================================================
c6d33447e28403a90ad817dba4df75fae785be28pquerna *
c6d33447e28403a90ad817dba4df75fae785be28pquerna * This software consists of voluntary contributions made by many
c6d33447e28403a90ad817dba4df75fae785be28pquerna * individuals on behalf of the Apache Group and was originally based
c6d33447e28403a90ad817dba4df75fae785be28pquerna * on public domain software written at the National Center for
c6d33447e28403a90ad817dba4df75fae785be28pquerna * Supercomputing Applications, University of Illinois, Urbana-Champaign.
c6d33447e28403a90ad817dba4df75fae785be28pquerna * For more information on the Apache Group and the Apache HTTP server
c6d33447e28403a90ad817dba4df75fae785be28pquerna * project, please see <http://www.apache.org/>.
c6d33447e28403a90ad817dba4df75fae785be28pquerna *
c6d33447e28403a90ad817dba4df75fae785be28pquerna */
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquerna/*
c6d33447e28403a90ad817dba4df75fae785be28pquerna * http_script: keeps all script-related ramblings together.
c6d33447e28403a90ad817dba4df75fae785be28pquerna *
c6d33447e28403a90ad817dba4df75fae785be28pquerna * Compliant to CGI/1.1 spec
c6d33447e28403a90ad817dba4df75fae785be28pquerna *
c6d33447e28403a90ad817dba4df75fae785be28pquerna * Adapted by rst from original NCSA code by Rob McCool
c6d33447e28403a90ad817dba4df75fae785be28pquerna *
c6d33447e28403a90ad817dba4df75fae785be28pquerna * Apache adds some new env vars; REDIRECT_URL and REDIRECT_QUERY_STRING for
c6d33447e28403a90ad817dba4df75fae785be28pquerna * custom error responses, and DOCUMENT_ROOT because we found it useful.
c6d33447e28403a90ad817dba4df75fae785be28pquerna * It also adds SERVER_ADMIN - useful for scripts to know who to mail when
c6d33447e28403a90ad817dba4df75fae785be28pquerna * they fail.
c6d33447e28403a90ad817dba4df75fae785be28pquerna */
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquerna#include "ap_config.h"
c6d33447e28403a90ad817dba4df75fae785be28pquerna#include "httpd.h"
c6d33447e28403a90ad817dba4df75fae785be28pquerna#include "http_config.h"
c6d33447e28403a90ad817dba4df75fae785be28pquerna#include "http_request.h"
c6d33447e28403a90ad817dba4df75fae785be28pquerna#include "http_core.h"
c6d33447e28403a90ad817dba4df75fae785be28pquerna#include "http_protocol.h"
c6d33447e28403a90ad817dba4df75fae785be28pquerna#include "http_main.h"
c6d33447e28403a90ad817dba4df75fae785be28pquerna#include "http_log.h"
c6d33447e28403a90ad817dba4df75fae785be28pquerna#include "util_script.h"
c6d33447e28403a90ad817dba4df75fae785be28pquerna#include "http_conf_globals.h"
c6d33447e28403a90ad817dba4df75fae785be28pquerna#ifdef HAVE_SYS_STAT_H
c6d33447e28403a90ad817dba4df75fae785be28pquerna#include <sys/stat.h>
c6d33447e28403a90ad817dba4df75fae785be28pquerna#endif
c6d33447e28403a90ad817dba4df75fae785be28pquerna#ifdef HAVE_STRING_H
c6d33447e28403a90ad817dba4df75fae785be28pquerna#include <string.h>
c6d33447e28403a90ad817dba4df75fae785be28pquerna#endif
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquernamodule MODULE_VAR_EXPORT cgi_module;
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquerna/* KLUDGE --- for back-combatibility, we don't have to check ExecCGI
c6d33447e28403a90ad817dba4df75fae785be28pquerna * in ScriptAliased directories, which means we need to know if this
c6d33447e28403a90ad817dba4df75fae785be28pquerna * request came through ScriptAlias or not... so the Alias module
c6d33447e28403a90ad817dba4df75fae785be28pquerna * leaves a note for us.
c6d33447e28403a90ad817dba4df75fae785be28pquerna */
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquernastatic int is_scriptaliased(request_rec *r)
c6d33447e28403a90ad817dba4df75fae785be28pquerna{
c6d33447e28403a90ad817dba4df75fae785be28pquerna    const char *t = ap_table_get(r->notes, "alias-forced-type");
c6d33447e28403a90ad817dba4df75fae785be28pquerna    return t && (!strcasecmp(t, "cgi-script"));
c6d33447e28403a90ad817dba4df75fae785be28pquerna}
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquerna/* Configuration stuff */
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquerna#define DEFAULT_LOGBYTES 10385760
c6d33447e28403a90ad817dba4df75fae785be28pquerna#define DEFAULT_BUFBYTES 1024
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquernatypedef struct {
c6d33447e28403a90ad817dba4df75fae785be28pquerna    char *logname;
c6d33447e28403a90ad817dba4df75fae785be28pquerna    long logbytes;
c6d33447e28403a90ad817dba4df75fae785be28pquerna    int bufbytes;
c6d33447e28403a90ad817dba4df75fae785be28pquerna} cgi_server_conf;
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquernastatic void *create_cgi_config(ap_context_t *p, server_rec *s)
c6d33447e28403a90ad817dba4df75fae785be28pquerna{
c6d33447e28403a90ad817dba4df75fae785be28pquerna    cgi_server_conf *c =
c6d33447e28403a90ad817dba4df75fae785be28pquerna    (cgi_server_conf *) ap_pcalloc(p, sizeof(cgi_server_conf));
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquerna    c->logname = NULL;
c6d33447e28403a90ad817dba4df75fae785be28pquerna    c->logbytes = DEFAULT_LOGBYTES;
c6d33447e28403a90ad817dba4df75fae785be28pquerna    c->bufbytes = DEFAULT_BUFBYTES;
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquerna    return c;
c6d33447e28403a90ad817dba4df75fae785be28pquerna}
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquernastatic void *merge_cgi_config(ap_context_t *p, void *basev, void *overridesv)
c6d33447e28403a90ad817dba4df75fae785be28pquerna{
c6d33447e28403a90ad817dba4df75fae785be28pquerna    cgi_server_conf *base = (cgi_server_conf *) basev, *overrides = (cgi_server_conf *) overridesv;
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquerna    return overrides->logname ? overrides : base;
c6d33447e28403a90ad817dba4df75fae785be28pquerna}
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquernastatic const char *set_scriptlog(cmd_parms *cmd, void *dummy, char *arg)
c6d33447e28403a90ad817dba4df75fae785be28pquerna{
c6d33447e28403a90ad817dba4df75fae785be28pquerna    server_rec *s = cmd->server;
c6d33447e28403a90ad817dba4df75fae785be28pquerna    cgi_server_conf *conf =
c6d33447e28403a90ad817dba4df75fae785be28pquerna    (cgi_server_conf *) ap_get_module_config(s->module_config, &cgi_module);
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquerna    conf->logname = arg;
c6d33447e28403a90ad817dba4df75fae785be28pquerna    return NULL;
c6d33447e28403a90ad817dba4df75fae785be28pquerna}
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquernastatic const char *set_scriptlog_length(cmd_parms *cmd, void *dummy, char *arg)
c6d33447e28403a90ad817dba4df75fae785be28pquerna{
c6d33447e28403a90ad817dba4df75fae785be28pquerna    server_rec *s = cmd->server;
c6d33447e28403a90ad817dba4df75fae785be28pquerna    cgi_server_conf *conf =
c6d33447e28403a90ad817dba4df75fae785be28pquerna    (cgi_server_conf *) ap_get_module_config(s->module_config, &cgi_module);
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquerna    conf->logbytes = atol(arg);
c6d33447e28403a90ad817dba4df75fae785be28pquerna    return NULL;
c6d33447e28403a90ad817dba4df75fae785be28pquerna}
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquernastatic const char *set_scriptlog_buffer(cmd_parms *cmd, void *dummy, char *arg)
c6d33447e28403a90ad817dba4df75fae785be28pquerna{
c6d33447e28403a90ad817dba4df75fae785be28pquerna    server_rec *s = cmd->server;
c6d33447e28403a90ad817dba4df75fae785be28pquerna    cgi_server_conf *conf =
c6d33447e28403a90ad817dba4df75fae785be28pquerna    (cgi_server_conf *) ap_get_module_config(s->module_config, &cgi_module);
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquerna    conf->bufbytes = atoi(arg);
c6d33447e28403a90ad817dba4df75fae785be28pquerna    return NULL;
c6d33447e28403a90ad817dba4df75fae785be28pquerna}
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquernastatic const command_rec cgi_cmds[] =
c6d33447e28403a90ad817dba4df75fae785be28pquerna{
c6d33447e28403a90ad817dba4df75fae785be28pquerna    {"ScriptLog", set_scriptlog, NULL, RSRC_CONF, TAKE1,
c6d33447e28403a90ad817dba4df75fae785be28pquerna     "the name of a log for script debugging info"},
c6d33447e28403a90ad817dba4df75fae785be28pquerna    {"ScriptLogLength", set_scriptlog_length, NULL, RSRC_CONF, TAKE1,
c6d33447e28403a90ad817dba4df75fae785be28pquerna     "the maximum length (in bytes) of the script debug log"},
c6d33447e28403a90ad817dba4df75fae785be28pquerna    {"ScriptLogBuffer", set_scriptlog_buffer, NULL, RSRC_CONF, TAKE1,
c6d33447e28403a90ad817dba4df75fae785be28pquerna     "the maximum size (in bytes) to record of a POST request"},
c6d33447e28403a90ad817dba4df75fae785be28pquerna    {NULL}
c6d33447e28403a90ad817dba4df75fae785be28pquerna};
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquernastatic int log_scripterror(request_rec *r, cgi_server_conf * conf, int ret,
c6d33447e28403a90ad817dba4df75fae785be28pquerna               int show_errno, char *error)
c6d33447e28403a90ad817dba4df75fae785be28pquerna{
c6d33447e28403a90ad817dba4df75fae785be28pquerna    ap_file_t *f = NULL;
c6d33447e28403a90ad817dba4df75fae785be28pquerna    struct stat finfo;
c6d33447e28403a90ad817dba4df75fae785be28pquerna    char time_str[AP_CTIME_LEN];
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquerna    ap_log_rerror(APLOG_MARK, show_errno|APLOG_ERR, errno, r,
c6d33447e28403a90ad817dba4df75fae785be28pquerna        "%s: %s", error, r->filename);
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquerna    if (!conf->logname ||
c6d33447e28403a90ad817dba4df75fae785be28pquerna    ((stat(ap_server_root_relative(r->pool, conf->logname), &finfo) == 0)
c6d33447e28403a90ad817dba4df75fae785be28pquerna     &&   (finfo.st_size > conf->logbytes)) ||
c6d33447e28403a90ad817dba4df75fae785be28pquerna          (ap_open(&f, ap_server_root_relative(r->pool, conf->logname),
c6d33447e28403a90ad817dba4df75fae785be28pquerna                   APR_APPEND | APR_BUFFERED, APR_OS_DEFAULT, r->pool) != APR_SUCCESS)) {
c6d33447e28403a90ad817dba4df75fae785be28pquerna    return ret;
c6d33447e28403a90ad817dba4df75fae785be28pquerna    }
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquerna    /* "%% [Wed Jun 19 10:53:21 1996] GET /cgi-bin/printenv HTTP/1.0" */
c6d33447e28403a90ad817dba4df75fae785be28pquerna    ap_ctime(time_str, ap_now());
c6d33447e28403a90ad817dba4df75fae785be28pquerna    ap_fprintf(f, "%%%% [%s] %s %s%s%s %s\n", time_str, r->method, r->uri,
c6d33447e28403a90ad817dba4df75fae785be28pquerna        r->args ? "?" : "", r->args ? r->args : "", r->protocol);
c6d33447e28403a90ad817dba4df75fae785be28pquerna    /* "%% 500 /usr/local/apache/cgi-bin */
c6d33447e28403a90ad817dba4df75fae785be28pquerna    ap_fprintf(f, "%%%% %d %s\n", ret, r->filename);
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquerna    ap_fprintf(f, "%%error\n%s\n", error);
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquerna    ap_close(f);
c6d33447e28403a90ad817dba4df75fae785be28pquerna    return ret;
c6d33447e28403a90ad817dba4df75fae785be28pquerna}
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquernastatic int log_script(request_rec *r, cgi_server_conf * conf, int ret,
c6d33447e28403a90ad817dba4df75fae785be28pquerna          char *dbuf, const char *sbuf, BUFF *script_in, BUFF *script_err)
c6d33447e28403a90ad817dba4df75fae785be28pquerna{
c6d33447e28403a90ad817dba4df75fae785be28pquerna    ap_array_header_t *hdrs_arr = ap_table_elts(r->headers_in);
c6d33447e28403a90ad817dba4df75fae785be28pquerna    ap_table_entry_t *hdrs = (ap_table_entry_t *) hdrs_arr->elts;
c6d33447e28403a90ad817dba4df75fae785be28pquerna    char argsbuffer[HUGE_STRING_LEN];
c6d33447e28403a90ad817dba4df75fae785be28pquerna    ap_file_t *f = NULL;
c6d33447e28403a90ad817dba4df75fae785be28pquerna    int i;
c6d33447e28403a90ad817dba4df75fae785be28pquerna    struct stat finfo;
c6d33447e28403a90ad817dba4df75fae785be28pquerna    char time_str[AP_CTIME_LEN];
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquerna    if (!conf->logname ||
c6d33447e28403a90ad817dba4df75fae785be28pquerna    ((stat(ap_server_root_relative(r->pool, conf->logname), &finfo) == 0)
c6d33447e28403a90ad817dba4df75fae785be28pquerna     &&   (finfo.st_size > conf->logbytes)) ||
c6d33447e28403a90ad817dba4df75fae785be28pquerna         (ap_open(&f, ap_server_root_relative(r->pool, conf->logname),
c6d33447e28403a90ad817dba4df75fae785be28pquerna                  APR_APPEND, APR_OS_DEFAULT, r->pool) != APR_SUCCESS)) {
c6d33447e28403a90ad817dba4df75fae785be28pquerna    /* Soak up script output */
c6d33447e28403a90ad817dba4df75fae785be28pquerna    while (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_in) > 0)
c6d33447e28403a90ad817dba4df75fae785be28pquerna        continue;
c6d33447e28403a90ad817dba4df75fae785be28pquerna#ifdef WIN32
c6d33447e28403a90ad817dba4df75fae785be28pquerna        /* Soak up stderr and redirect it to the error log.
c6d33447e28403a90ad817dba4df75fae785be28pquerna         * Script output to stderr is already directed to the error log
c6d33447e28403a90ad817dba4df75fae785be28pquerna         * on Unix, thanks to the magic of fork().
c6d33447e28403a90ad817dba4df75fae785be28pquerna         */
c6d33447e28403a90ad817dba4df75fae785be28pquerna        while (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_err) > 0) {
c6d33447e28403a90ad817dba4df75fae785be28pquerna            ap_log_rerror(APLOG_MARK, APLOG_ERR | APLOG_NOERRNO, 0, r,
c6d33447e28403a90ad817dba4df75fae785be28pquerna                          "%s", argsbuffer);
c6d33447e28403a90ad817dba4df75fae785be28pquerna        }
c6d33447e28403a90ad817dba4df75fae785be28pquerna#else
c6d33447e28403a90ad817dba4df75fae785be28pquerna    while (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_err) > 0)
c6d33447e28403a90ad817dba4df75fae785be28pquerna        continue;
c6d33447e28403a90ad817dba4df75fae785be28pquerna#endif
c6d33447e28403a90ad817dba4df75fae785be28pquerna    return ret;
c6d33447e28403a90ad817dba4df75fae785be28pquerna    }
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquerna    /* "%% [Wed Jun 19 10:53:21 1996] GET /cgi-bin/printenv HTTP/1.0" */
c6d33447e28403a90ad817dba4df75fae785be28pquerna    ap_ctime(time_str, ap_now());
c6d33447e28403a90ad817dba4df75fae785be28pquerna    ap_fprintf(f, "%%%% [%s] %s %s%s%s %s\n", time_str, r->method, r->uri,
c6d33447e28403a90ad817dba4df75fae785be28pquerna        r->args ? "?" : "", r->args ? r->args : "", r->protocol);
c6d33447e28403a90ad817dba4df75fae785be28pquerna    /* "%% 500 /usr/local/apache/cgi-bin" */
c6d33447e28403a90ad817dba4df75fae785be28pquerna    ap_fprintf(f, "%%%% %d %s\n", ret, r->filename);
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquerna    ap_puts("%request\n", f);
c6d33447e28403a90ad817dba4df75fae785be28pquerna    for (i = 0; i < hdrs_arr->nelts; ++i) {
c6d33447e28403a90ad817dba4df75fae785be28pquerna    if (!hdrs[i].key)
c6d33447e28403a90ad817dba4df75fae785be28pquerna        continue;
c6d33447e28403a90ad817dba4df75fae785be28pquerna    ap_fprintf(f, "%s: %s\n", hdrs[i].key, hdrs[i].val);
c6d33447e28403a90ad817dba4df75fae785be28pquerna    }
c6d33447e28403a90ad817dba4df75fae785be28pquerna    if ((r->method_number == M_POST || r->method_number == M_PUT)
c6d33447e28403a90ad817dba4df75fae785be28pquerna    && *dbuf) {
c6d33447e28403a90ad817dba4df75fae785be28pquerna    ap_fprintf(f, "\n%s\n", dbuf);
c6d33447e28403a90ad817dba4df75fae785be28pquerna    }
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquerna    ap_puts("%response\n", f);
c6d33447e28403a90ad817dba4df75fae785be28pquerna    hdrs_arr = ap_table_elts(r->err_headers_out);
c6d33447e28403a90ad817dba4df75fae785be28pquerna    hdrs = (ap_table_entry_t *) hdrs_arr->elts;
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquerna    for (i = 0; i < hdrs_arr->nelts; ++i) {
c6d33447e28403a90ad817dba4df75fae785be28pquerna    if (!hdrs[i].key)
c6d33447e28403a90ad817dba4df75fae785be28pquerna        continue;
c6d33447e28403a90ad817dba4df75fae785be28pquerna    ap_fprintf(f, "%s: %s\n", hdrs[i].key, hdrs[i].val);
c6d33447e28403a90ad817dba4df75fae785be28pquerna    }
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquerna    if (sbuf && *sbuf)
c6d33447e28403a90ad817dba4df75fae785be28pquerna    ap_fprintf(f, "%s\n", sbuf);
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquerna    if (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_in) > 0) {
c6d33447e28403a90ad817dba4df75fae785be28pquerna    ap_puts("%stdout\n", f);
c6d33447e28403a90ad817dba4df75fae785be28pquerna    ap_puts(argsbuffer, f);
c6d33447e28403a90ad817dba4df75fae785be28pquerna    while (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_in) > 0)
c6d33447e28403a90ad817dba4df75fae785be28pquerna        ap_puts(argsbuffer, f);
c6d33447e28403a90ad817dba4df75fae785be28pquerna    ap_puts("\n", f);
c6d33447e28403a90ad817dba4df75fae785be28pquerna    }
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquerna    if (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_err) > 0) {
c6d33447e28403a90ad817dba4df75fae785be28pquerna    ap_puts("%stderr\n", f);
c6d33447e28403a90ad817dba4df75fae785be28pquerna    ap_puts(argsbuffer, f);
c6d33447e28403a90ad817dba4df75fae785be28pquerna    while (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_err) > 0)
c6d33447e28403a90ad817dba4df75fae785be28pquerna        ap_puts(argsbuffer, f);
c6d33447e28403a90ad817dba4df75fae785be28pquerna    ap_puts("\n", f);
c6d33447e28403a90ad817dba4df75fae785be28pquerna    }
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquerna    ap_bclose(script_in);
c6d33447e28403a90ad817dba4df75fae785be28pquerna    ap_bclose(script_err);
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquerna    ap_close(f);
c6d33447e28403a90ad817dba4df75fae785be28pquerna    return ret;
c6d33447e28403a90ad817dba4df75fae785be28pquerna}
c6d33447e28403a90ad817dba4df75fae785be28pquernastatic ap_status_t run_cgi_child(BUFF **script_out, BUFF **script_in, BUFF **script_err,
c6d33447e28403a90ad817dba4df75fae785be28pquerna                                 char *command, char *const argv[], request_rec *r, ap_context_t *p)
c6d33447e28403a90ad817dba4df75fae785be28pquerna{
c6d33447e28403a90ad817dba4df75fae785be28pquerna    char **env;
c6d33447e28403a90ad817dba4df75fae785be28pquerna    ap_procattr_t *procattr;
c6d33447e28403a90ad817dba4df75fae785be28pquerna    ap_proc_t *procnew;
c6d33447e28403a90ad817dba4df75fae785be28pquerna    ap_status_t rc = APR_SUCCESS;
c6d33447e28403a90ad817dba4df75fae785be28pquerna    ap_file_t *file = NULL;
c6d33447e28403a90ad817dba4df75fae785be28pquerna    ap_iol *iol;
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquerna#ifdef DEBUG_CGI
c6d33447e28403a90ad817dba4df75fae785be28pquerna#ifdef OS2
c6d33447e28403a90ad817dba4df75fae785be28pquerna    /* Under OS/2 need to use device con. */
c6d33447e28403a90ad817dba4df75fae785be28pquerna    FILE *dbg = fopen("con", "w");
c6d33447e28403a90ad817dba4df75fae785be28pquerna#else
c6d33447e28403a90ad817dba4df75fae785be28pquerna    FILE *dbg = fopen("/dev/tty", "w");
c6d33447e28403a90ad817dba4df75fae785be28pquerna#endif
c6d33447e28403a90ad817dba4df75fae785be28pquerna    int i;
c6d33447e28403a90ad817dba4df75fae785be28pquerna#endif
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquerna    ap_block_alarms();
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquerna    RAISE_SIGSTOP(CGI_CHILD);
c6d33447e28403a90ad817dba4df75fae785be28pquerna#ifdef DEBUG_CGI
c6d33447e28403a90ad817dba4df75fae785be28pquerna    fprintf(dbg, "Attempting to exec %s as %sCGI child (argv0 = %s)\n",
c6d33447e28403a90ad817dba4df75fae785be28pquerna        r->filename, cld->nph ? "NPH " : "", argv0);
c6d33447e28403a90ad817dba4df75fae785be28pquerna#endif
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquerna    ap_add_cgi_vars(r);
c6d33447e28403a90ad817dba4df75fae785be28pquerna    env = ap_create_environment(p, r->subprocess_env);
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquerna#ifdef DEBUG_CGI
c6d33447e28403a90ad817dba4df75fae785be28pquerna    fprintf(dbg, "Environment: \n");
c6d33447e28403a90ad817dba4df75fae785be28pquerna    for (i = 0; env[i]; ++i)
c6d33447e28403a90ad817dba4df75fae785be28pquerna    fprintf(dbg, "'%s'\n", env[i]);
c6d33447e28403a90ad817dba4df75fae785be28pquerna#endif
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquerna    /* Transumute ourselves into the script.
c6d33447e28403a90ad817dba4df75fae785be28pquerna     * NB only ISINDEX scripts get decoded arguments.
c6d33447e28403a90ad817dba4df75fae785be28pquerna     */
c6d33447e28403a90ad817dba4df75fae785be28pquerna    if (((rc = ap_createprocattr_init(&procattr, p)) != APR_SUCCESS) ||
c6d33447e28403a90ad817dba4df75fae785be28pquerna        ((rc = ap_setprocattr_io(procattr,
c6d33447e28403a90ad817dba4df75fae785be28pquerna                                 APR_CHILD_BLOCK,
c6d33447e28403a90ad817dba4df75fae785be28pquerna                                 APR_CHILD_BLOCK,
c6d33447e28403a90ad817dba4df75fae785be28pquerna                                 APR_CHILD_BLOCK)) != APR_SUCCESS) ||
c6d33447e28403a90ad817dba4df75fae785be28pquerna        ((rc = ap_setprocattr_dir(procattr,
c6d33447e28403a90ad817dba4df75fae785be28pquerna                                  ap_make_dirstr_parent(r->pool, r->filename))) != APR_SUCCESS) ||
c6d33447e28403a90ad817dba4df75fae785be28pquerna        ((rc = ap_setprocattr_cmdtype(procattr, APR_PROGRAM)) != APR_SUCCESS)) {
c6d33447e28403a90ad817dba4df75fae785be28pquerna        /* Something bad happened, tell the world. */
c6d33447e28403a90ad817dba4df75fae785be28pquerna    ap_log_rerror(APLOG_MARK, APLOG_ERR, rc, r,
c6d33447e28403a90ad817dba4df75fae785be28pquerna              "couldn't create child process: %s", r->filename);
c6d33447e28403a90ad817dba4df75fae785be28pquerna    }
c6d33447e28403a90ad817dba4df75fae785be28pquerna    else {
c6d33447e28403a90ad817dba4df75fae785be28pquerna        rc = ap_create_process(&procnew, command, argv, env, procattr, p);
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquerna        if (rc != APR_SUCCESS) {
c6d33447e28403a90ad817dba4df75fae785be28pquerna            /* Bad things happened. Everyone should have cleaned up. */
c6d33447e28403a90ad817dba4df75fae785be28pquerna            ap_log_rerror(APLOG_MARK, APLOG_ERR, rc, r,
c6d33447e28403a90ad817dba4df75fae785be28pquerna                        "couldn't create child process: %d: %s", rc, r->filename);
c6d33447e28403a90ad817dba4df75fae785be28pquerna        }
c6d33447e28403a90ad817dba4df75fae785be28pquerna        else {
c6d33447e28403a90ad817dba4df75fae785be28pquerna            ap_note_subprocess(p, procnew, kill_after_timeout);
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquerna            /* Fill in BUFF structure for parents pipe to child's stdout */
c6d33447e28403a90ad817dba4df75fae785be28pquerna            ap_get_childout(&file, procnew);
c6d33447e28403a90ad817dba4df75fae785be28pquerna            iol = ap_create_file_iol(file);
c6d33447e28403a90ad817dba4df75fae785be28pquerna            if (!iol)
c6d33447e28403a90ad817dba4df75fae785be28pquerna                return APR_EBADF;
c6d33447e28403a90ad817dba4df75fae785be28pquerna            *script_in = ap_bcreate(p, B_RD);
c6d33447e28403a90ad817dba4df75fae785be28pquerna            ap_bpush_iol(*script_in, iol);
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquerna            /* Fill in BUFF structure for parents pipe to child's stdin */
c6d33447e28403a90ad817dba4df75fae785be28pquerna            ap_get_childin(&file, procnew);
c6d33447e28403a90ad817dba4df75fae785be28pquerna            iol = ap_create_file_iol(file);
c6d33447e28403a90ad817dba4df75fae785be28pquerna            if (!iol)
c6d33447e28403a90ad817dba4df75fae785be28pquerna                return APR_EBADF;
c6d33447e28403a90ad817dba4df75fae785be28pquerna            *script_out = ap_bcreate(p, B_WR);
c6d33447e28403a90ad817dba4df75fae785be28pquerna            ap_bpush_iol(*script_out, iol);
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquerna            /* Fill in BUFF structure for parents pipe to child's stderr */
c6d33447e28403a90ad817dba4df75fae785be28pquerna            ap_get_childerr(&file, procnew);
c6d33447e28403a90ad817dba4df75fae785be28pquerna            iol = ap_create_file_iol(file);
c6d33447e28403a90ad817dba4df75fae785be28pquerna            if (!iol)
c6d33447e28403a90ad817dba4df75fae785be28pquerna                return APR_EBADF;
c6d33447e28403a90ad817dba4df75fae785be28pquerna            *script_err = ap_bcreate(p, B_RD);
c6d33447e28403a90ad817dba4df75fae785be28pquerna            ap_bpush_iol(*script_err, iol);
c6d33447e28403a90ad817dba4df75fae785be28pquerna        }
c6d33447e28403a90ad817dba4df75fae785be28pquerna    }
c6d33447e28403a90ad817dba4df75fae785be28pquerna    ap_unblock_alarms();
c6d33447e28403a90ad817dba4df75fae785be28pquerna    return (rc);
c6d33447e28403a90ad817dba4df75fae785be28pquerna}
c6d33447e28403a90ad817dba4df75fae785be28pquernastatic ap_status_t build_argv_list(char ***argv, request_rec *r, ap_context_t *p)
c6d33447e28403a90ad817dba4df75fae785be28pquerna{
c6d33447e28403a90ad817dba4df75fae785be28pquerna    int numwords, x, idx;
c6d33447e28403a90ad817dba4df75fae785be28pquerna    char *w;
c6d33447e28403a90ad817dba4df75fae785be28pquerna    const char *args = r->args;
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquerna    if (!args || !args[0] || strchr(args, '=')) {
c6d33447e28403a90ad817dba4df75fae785be28pquerna        numwords = 1;
c6d33447e28403a90ad817dba4df75fae785be28pquerna    }
c6d33447e28403a90ad817dba4df75fae785be28pquerna    else {
c6d33447e28403a90ad817dba4df75fae785be28pquerna        /* count the number of keywords */
c6d33447e28403a90ad817dba4df75fae785be28pquerna        for (x = 0, numwords = 2; args[x]; x++) {
c6d33447e28403a90ad817dba4df75fae785be28pquerna            if (args[x] == '+') {
c6d33447e28403a90ad817dba4df75fae785be28pquerna                ++numwords;
c6d33447e28403a90ad817dba4df75fae785be28pquerna            }
c6d33447e28403a90ad817dba4df75fae785be28pquerna        }
c6d33447e28403a90ad817dba4df75fae785be28pquerna    }
c6d33447e28403a90ad817dba4df75fae785be28pquerna    /* Everything is - 1 to account for the first parameter which is the
c6d33447e28403a90ad817dba4df75fae785be28pquerna     * program name.  We didn't used to have to do this, but APR wants it.
c6d33447e28403a90ad817dba4df75fae785be28pquerna     */
c6d33447e28403a90ad817dba4df75fae785be28pquerna    if (numwords > APACHE_ARG_MAX - 1) {
c6d33447e28403a90ad817dba4df75fae785be28pquerna        numwords = APACHE_ARG_MAX - 1;  /* Truncate args to prevent overrun */
c6d33447e28403a90ad817dba4df75fae785be28pquerna    }
c6d33447e28403a90ad817dba4df75fae785be28pquerna    *argv = (char **) ap_palloc(p, (numwords + 2) * sizeof(char *));
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquerna    for (x = 1, idx = 1; x < numwords; x++) {
c6d33447e28403a90ad817dba4df75fae785be28pquerna        w = ap_getword_nulls(p, &args, '+');
c6d33447e28403a90ad817dba4df75fae785be28pquerna        ap_unescape_url(w);
c6d33447e28403a90ad817dba4df75fae785be28pquerna        (*argv)[idx++] = ap_escape_shell_cmd(p, w);
c6d33447e28403a90ad817dba4df75fae785be28pquerna    }
c6d33447e28403a90ad817dba4df75fae785be28pquerna    (*argv)[idx] = NULL;
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquerna    return APR_SUCCESS;
c6d33447e28403a90ad817dba4df75fae785be28pquerna}
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquernastatic ap_status_t build_command_line(char **c, request_rec *r, ap_context_t *p)
c6d33447e28403a90ad817dba4df75fae785be28pquerna{
c6d33447e28403a90ad817dba4df75fae785be28pquerna#ifdef WIN32
c6d33447e28403a90ad817dba4df75fae785be28pquerna    char *quoted_filename = NULL;
c6d33447e28403a90ad817dba4df75fae785be28pquerna    char *interpreter = NULL;
c6d33447e28403a90ad817dba4df75fae785be28pquerna    file_type_e fileType;
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquerna    *c = NULL;
c6d33447e28403a90ad817dba4df75fae785be28pquerna    fileType = ap_get_win32_interpreter(r, &interpreter);
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquerna    if (fileType == eFileTypeUNKNOWN) {
c6d33447e28403a90ad817dba4df75fae785be28pquerna        ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, r,
c6d33447e28403a90ad817dba4df75fae785be28pquerna                      "%s is not executable; ensure interpreted scripts have "
c6d33447e28403a90ad817dba4df75fae785be28pquerna                      "\"#!\" first line",
c6d33447e28403a90ad817dba4df75fae785be28pquerna                      r->filename);
c6d33447e28403a90ad817dba4df75fae785be28pquerna        return APR_EBADF;
c6d33447e28403a90ad817dba4df75fae785be28pquerna    }
c6d33447e28403a90ad817dba4df75fae785be28pquerna
c6d33447e28403a90ad817dba4df75fae785be28pquerna    /*
c6d33447e28403a90ad817dba4df75fae785be28pquerna     * Build the command string to pass to ap_create_process()
c6d33447e28403a90ad817dba4df75fae785be28pquerna     */
c6d33447e28403a90ad817dba4df75fae785be28pquerna    quoted_filename = ap_pstrcat(p, "\"", r->filename, "\"", NULL);
    if (interpreter && *interpreter) {
        *c = ap_pstrcat(p, interpreter, " ", quoted_filename, " ", NULL);
    }
    else {
        *c = ap_pstrcat(p, quoted_filename, " ", NULL);
    }
#else
    *c = ap_pstrcat(p, r->filename, NULL);
#endif
    return APR_SUCCESS;
}

static int cgi_handler(request_rec *r)
{
    int retval, nph, dbpos = 0;
    char *argv0, *dbuf = NULL;
    char *command;
    char **argv = NULL;

    BUFF *script_out = NULL, *script_in = NULL, *script_err = NULL;
    char argsbuffer[HUGE_STRING_LEN];
    int is_included = !strcmp(r->protocol, "INCLUDED");
    void *sconf = r->server->module_config;
    ap_context_t *p;
    cgi_server_conf *conf =
    (cgi_server_conf *) ap_get_module_config(sconf, &cgi_module);

    p = r->main ? r->main->pool : r->pool;

    if (r->method_number == M_OPTIONS) {
    /* 99 out of 100 CGI scripts, this is all they support */
    r->allowed |= (1 << M_GET);
    r->allowed |= (1 << M_POST);
    return DECLINED;
    }

    if ((argv0 = strrchr(r->filename, '/')) != NULL)
    argv0++;
    else
    argv0 = r->filename;

    nph = !(strncmp(argv0, "nph-", 4));

    if (!(ap_allow_options(r) & OPT_EXECCGI) && !is_scriptaliased(r))
        return log_scripterror(r, conf, FORBIDDEN, APLOG_NOERRNO,
                               "Options ExecCGI is off in this directory");
    if (nph && is_included)
        return log_scripterror(r, conf, FORBIDDEN, APLOG_NOERRNO,
                               "attempt to include NPH CGI script");

#if defined(OS2) || defined(WIN32)
    /* Allow for cgi files without the .EXE extension on them under OS/2 */
    if (r->finfo.protection == 0) {
        struct stat statbuf;
        char *newfile;

        newfile = ap_pstrcat(r->pool, r->filename, ".EXE", NULL);

        if ((stat(newfile, &statbuf) != 0) || (!S_ISREG(statbuf.st_mode))) {
            return log_scripterror(r, conf, NOT_FOUND, 0,
                                   "script not found or unable to stat");
        } else {
            r->filename = newfile;
        }
    }
#else
    if (r->finfo.protection == 0)
    return log_scripterror(r, conf, NOT_FOUND, APLOG_NOERRNO,
                   "script not found or unable to stat");
#endif
    if (r->finfo.filetype == APR_DIR)
    return log_scripterror(r, conf, FORBIDDEN, APLOG_NOERRNO,
                   "attempt to invoke directory as script");

/*
    if (!ap_suexec_enabled) {
    if (!ap_can_exec(&r->finfo))
        return log_scripterror(r, conf, FORBIDDEN, APLOG_NOERRNO,
                   "file permissions deny server execution");
    }

*/
    if ((retval = ap_setup_client_block(r, REQUEST_CHUNKED_ERROR)))
    return retval;

    ap_add_common_vars(r);

    /* build the command line */
    if (build_command_line(&command, r, p) != APR_SUCCESS) {
        ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
                      "couldn't spawn child process: %s", r->filename);
        return HTTP_INTERNAL_SERVER_ERROR;
    }
    /* build the argument list */
    else if (build_argv_list(&argv, r, p) != APR_SUCCESS) {
        ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
                      "couldn't spawn child process: %s", r->filename);
        return HTTP_INTERNAL_SERVER_ERROR;
    }
    argv[0] = ap_pstrdup(p, command);
    /* run the script in its own process */
    if (run_cgi_child(&script_out, &script_in, &script_err, command, argv, r, p) != APR_SUCCESS) {
        ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
                      "couldn't spawn child process: %s", r->filename);
        return HTTP_INTERNAL_SERVER_ERROR;
    }

    /* 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;
        ap_ssize_t bytes_written;

    if (conf->logname) {
        dbuf = ap_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;
        }
            (void) ap_bwrite(script_out, argsbuffer, len_read, &bytes_written);
        if (bytes_written < len_read) {
        /* silly script stopped reading, soak up remaining message */
        while (ap_get_client_block(r, argsbuffer, HUGE_STRING_LEN) > 0) {
            /* dump it */
        }
        break;
        }
    }
    ap_bflush(script_out);
    }

    ap_bclose(script_out);

    /* Handle script return... */
    if (script_in && !nph) {
    const char *location;
    char sbuf[MAX_STRING_LEN];
    int ret;

    if ((ret = ap_scan_script_header_err_buff(r, script_in, sbuf))) {
        return log_script(r, conf, ret, dbuf, sbuf, script_in, script_err);
    }

#ifdef CHARSET_EBCDIC
        /* Now check the Content-Type to decide if conversion is needed */
        ap_checkconv(r);
#endif /*CHARSET_EBCDIC*/

    location = ap_table_get(r->headers_out, "Location");

    if (location && location[0] == '/' && r->status == 200) {

        /* Soak up all the script output */
        while (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_in) > 0) {
        continue;
        }
        while (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_err) > 0) {
        continue;
        }
        /* This redirect needs to be a GET no matter what the original
         * method was.
         */
        r->method = ap_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.
         */
        ap_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 REDIRECT;
    }

    ap_send_http_header(r);
    if (!r->header_only) {
        ap_send_fb(script_in, r);
    }
    ap_bclose(script_in);

    while (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_err) > 0) {
        continue;
    }
    ap_bclose(script_err);
    }

    if (script_in && nph) {
    ap_send_fb(script_in, r);
    }

    return OK;          /* NOT r->status, even if it has changed. */
}

static const handler_rec cgi_handlers[] =
{
    {CGI_MAGIC_TYPE, cgi_handler},
    {"cgi-script", cgi_handler},
    {NULL}
};

module MODULE_VAR_EXPORT cgi_module =
{
    STANDARD20_MODULE_STUFF,
    NULL,           /* dir config creater */
    NULL,           /* dir merger --- default is to override */
    create_cgi_config,      /* server config */
    merge_cgi_config,       /* merge server config */
    cgi_cmds,           /* command ap_table_t */
    cgi_handlers,       /* handlers */
    NULL            /* register hooks */
};