httpd/server/util_script.c

	util_script.c revision 3e520e9f095fbbcaa3c216c8ea56e89bd6fd58b4
842ae4bd224140319ae7feec1872b93dfd491143fielding/* Licensed to the Apache Software Foundation (ASF) under one or more
842ae4bd224140319ae7feec1872b93dfd491143fielding * contributor license agreements.  See the NOTICE file distributed with
842ae4bd224140319ae7feec1872b93dfd491143fielding * this work for additional information regarding copyright ownership.
842ae4bd224140319ae7feec1872b93dfd491143fielding * The ASF licenses this file to You under the Apache License, Version 2.0
842ae4bd224140319ae7feec1872b93dfd491143fielding * (the "License"); you may not use this file except in compliance with
842ae4bd224140319ae7feec1872b93dfd491143fielding * the License.  You may obtain a copy of the License at
b1627fe7e2cb3809dcdfdf1fcbbb6dbccaf788c6rbb *
ce9621257ef9e54c1bbe5ad8a5f445a1f211c2dcnd *     http://www.apache.org/licenses/LICENSE-2.0
b1627fe7e2cb3809dcdfdf1fcbbb6dbccaf788c6rbb *
ce9621257ef9e54c1bbe5ad8a5f445a1f211c2dcnd * Unless required by applicable law or agreed to in writing, software
ce9621257ef9e54c1bbe5ad8a5f445a1f211c2dcnd * distributed under the License is distributed on an "AS IS" BASIS,
ce9621257ef9e54c1bbe5ad8a5f445a1f211c2dcnd * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
ce9621257ef9e54c1bbe5ad8a5f445a1f211c2dcnd * See the License for the specific language governing permissions and
ce9621257ef9e54c1bbe5ad8a5f445a1f211c2dcnd * limitations under the License.
b1627fe7e2cb3809dcdfdf1fcbbb6dbccaf788c6rbb */
b1627fe7e2cb3809dcdfdf1fcbbb6dbccaf788c6rbb
b1627fe7e2cb3809dcdfdf1fcbbb6dbccaf788c6rbb#include "apr.h"
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp#include "apr_lib.h"
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp#include "apr_strings.h"
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp#define APR_WANT_STRFUNC
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp#include "apr_want.h"
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp
b1627fe7e2cb3809dcdfdf1fcbbb6dbccaf788c6rbb#if APR_HAVE_STDLIB_H
7d37dff338a52aa8836d78e4f1a67b76911da66caaron#include <stdlib.h>
e721236e598d985001c6cabe8c960b648cde7c19ylavic#endif
7d37dff338a52aa8836d78e4f1a67b76911da66caaron
7d37dff338a52aa8836d78e4f1a67b76911da66caaron#include "ap_config.h"
7d37dff338a52aa8836d78e4f1a67b76911da66caaron#include "httpd.h"
5d5d5ca04c57c7ab865924f4648e8f80de27adfebrianp#include "http_config.h"
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp#include "http_main.h"
7d37dff338a52aa8836d78e4f1a67b76911da66caaron#include "http_log.h"
7d37dff338a52aa8836d78e4f1a67b76911da66caaron#include "http_core.h"
7d37dff338a52aa8836d78e4f1a67b76911da66caaron#include "http_protocol.h"
7d37dff338a52aa8836d78e4f1a67b76911da66caaron#include "http_request.h"       /* for sub_req_lookup_uri() */
7d37dff338a52aa8836d78e4f1a67b76911da66caaron#include "util_script.h"
7d37dff338a52aa8836d78e4f1a67b76911da66caaron#include "apr_date.h"           /* For apr_date_parse_http() */
7d37dff338a52aa8836d78e4f1a67b76911da66caaron#include "util_ebcdic.h"
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp#ifdef OS2
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp#define INCL_DOS
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp#include <os2.h>
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp#endif
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp/*
49f77954252489cd8f9037e1e2d79d16a7d6897fchrisd * Various utility functions which are common to a whole lot of
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp * script-type extensions mechanisms, and might as well be gathered
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp * in one place (if only to avoid creating inter-module dependancies
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp * where there don't have to be).
5d5d5ca04c57c7ab865924f4648e8f80de27adfebrianp */
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp
7d37dff338a52aa8836d78e4f1a67b76911da66caaron/* we know core's module_index is 0 */
7d37dff338a52aa8836d78e4f1a67b76911da66caaron#undef APLOG_MODULE_INDEX
7d37dff338a52aa8836d78e4f1a67b76911da66caaron#define APLOG_MODULE_INDEX AP_CORE_MODULE_INDEX
7d37dff338a52aa8836d78e4f1a67b76911da66caaron
5d5d5ca04c57c7ab865924f4648e8f80de27adfebrianpstatic char *http2env(request_rec *r, const char *w)
7d37dff338a52aa8836d78e4f1a67b76911da66caaron{
7d37dff338a52aa8836d78e4f1a67b76911da66caaron    char *res = (char *)apr_palloc(r->pool, sizeof("HTTP_") + strlen(w));
7d37dff338a52aa8836d78e4f1a67b76911da66caaron    char *cp = res;
7d37dff338a52aa8836d78e4f1a67b76911da66caaron    char c;
0696197a54f186a65abacba1037f6fbe0cb975a1niq
7d37dff338a52aa8836d78e4f1a67b76911da66caaron    *cp++ = 'H';
7d37dff338a52aa8836d78e4f1a67b76911da66caaron    *cp++ = 'T';
7d37dff338a52aa8836d78e4f1a67b76911da66caaron    *cp++ = 'T';
7d37dff338a52aa8836d78e4f1a67b76911da66caaron    *cp++ = 'P';
7d37dff338a52aa8836d78e4f1a67b76911da66caaron    *cp++ = '_';
7d37dff338a52aa8836d78e4f1a67b76911da66caaron
7d37dff338a52aa8836d78e4f1a67b76911da66caaron    while ((c = *w++) != 0) {
7d37dff338a52aa8836d78e4f1a67b76911da66caaron        if (apr_isalnum(c)) {
7d37dff338a52aa8836d78e4f1a67b76911da66caaron            *cp++ = apr_toupper(c);
7d37dff338a52aa8836d78e4f1a67b76911da66caaron        }
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp        else if (c == '-') {
5d5d5ca04c57c7ab865924f4648e8f80de27adfebrianp            *cp++ = '_';
7d37dff338a52aa8836d78e4f1a67b76911da66caaron        }
7d37dff338a52aa8836d78e4f1a67b76911da66caaron        else {
7d37dff338a52aa8836d78e4f1a67b76911da66caaron            ap_log_rerror(APLOG_MARK, APLOG_TRACE1, 0, r,
7d37dff338a52aa8836d78e4f1a67b76911da66caaron                          "Not exporting header with invalid name as envvar: %s",
7d37dff338a52aa8836d78e4f1a67b76911da66caaron                          ap_escape_logitem(r->pool, w));
7d37dff338a52aa8836d78e4f1a67b76911da66caaron            return NULL;
7d37dff338a52aa8836d78e4f1a67b76911da66caaron        }
7d37dff338a52aa8836d78e4f1a67b76911da66caaron    }
5d5d5ca04c57c7ab865924f4648e8f80de27adfebrianp    *cp = 0;
5d5d5ca04c57c7ab865924f4648e8f80de27adfebrianp
7d37dff338a52aa8836d78e4f1a67b76911da66caaron    return res;
7d37dff338a52aa8836d78e4f1a67b76911da66caaron}
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianpstatic void add_unless_null(apr_table_t *table, const char *name, const char *val)
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp{
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp    if (name && val) {
5d5d5ca04c57c7ab865924f4648e8f80de27adfebrianp        apr_table_addn(table, name, val);
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp    }
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp}
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianpstatic void env2env(apr_table_t *table, const char *name)
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp{
2abb2c210f1ddd7312ee86dd1d9e8486f4fff29cniq    add_unless_null(table, name, getenv(name));
2abb2c210f1ddd7312ee86dd1d9e8486f4fff29cniq}
ad4e6b6e2fababcc12d48071492c9b2d76e022cbrpluem
2abb2c210f1ddd7312ee86dd1d9e8486f4fff29cniqAP_DECLARE(char **) ap_create_environment(apr_pool_t *p, apr_table_t *t)
2abb2c210f1ddd7312ee86dd1d9e8486f4fff29cniq{
2abb2c210f1ddd7312ee86dd1d9e8486f4fff29cniq    const apr_array_header_t *env_arr = apr_table_elts(t);
49f77954252489cd8f9037e1e2d79d16a7d6897fchrisd    const apr_table_entry_t *elts = (const apr_table_entry_t *) env_arr->elts;
51ef69890746f3cb512c7b867d43425af928a816rpluem    char **env = (char **) apr_palloc(p, (env_arr->nelts + 2) * sizeof(char *));
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp    int i, j;
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp    char *tz;
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp    char *whack;
5d5d5ca04c57c7ab865924f4648e8f80de27adfebrianp
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp    j = 0;
e721236e598d985001c6cabe8c960b648cde7c19ylavic    if (!apr_table_get(t, "TZ")) {
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp        tz = getenv("TZ");
e721236e598d985001c6cabe8c960b648cde7c19ylavic        if (tz != NULL) {
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp            env[j++] = apr_pstrcat(p, "TZ=", tz, NULL);
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp        }
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp    }
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp    for (i = 0; i < env_arr->nelts; ++i) {
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp        if (!elts[i].key) {
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp            continue;
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp        }
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp        env[j] = apr_pstrcat(p, elts[i].key, "=", elts[i].val, NULL);
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp        whack = env[j];
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp        if (apr_isdigit(*whack)) {
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp            *whack++ = '_';
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp        }
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp        while (*whack != '=') {
7d37dff338a52aa8836d78e4f1a67b76911da66caaron            if (!apr_isalnum(*whack) && *whack != '_') {
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp                *whack = '_';
7d37dff338a52aa8836d78e4f1a67b76911da66caaron            }
7d37dff338a52aa8836d78e4f1a67b76911da66caaron            ++whack;
7d37dff338a52aa8836d78e4f1a67b76911da66caaron        }
5d5d5ca04c57c7ab865924f4648e8f80de27adfebrianp        ++j;
5d5d5ca04c57c7ab865924f4648e8f80de27adfebrianp    }
7d37dff338a52aa8836d78e4f1a67b76911da66caaron
7d37dff338a52aa8836d78e4f1a67b76911da66caaron    env[j] = NULL;
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp    return env;
5d5d5ca04c57c7ab865924f4648e8f80de27adfebrianp}
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianpAP_DECLARE(void) ap_add_common_vars(request_rec *r)
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp{
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp    apr_table_t *e;
7d37dff338a52aa8836d78e4f1a67b76911da66caaron    server_rec *s = r->server;
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp    conn_rec *c = r->connection;
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp    const char *env_temp;
377225a335b5bb47e12c2739cb902f53fd869a09brianp    const apr_array_header_t *hdrs_arr = apr_table_elts(r->headers_in);
377225a335b5bb47e12c2739cb902f53fd869a09brianp    const apr_table_entry_t *hdrs = (const apr_table_entry_t *) hdrs_arr->elts;
377225a335b5bb47e12c2739cb902f53fd869a09brianp    int i;
377225a335b5bb47e12c2739cb902f53fd869a09brianp    apr_port_t rport;
377225a335b5bb47e12c2739cb902f53fd869a09brianp
b44a707ac289d826620a65769db8074c96cb6a7erpluem    /* use a temporary apr_table_t which we'll overlap onto
b44a707ac289d826620a65769db8074c96cb6a7erpluem     * r->subprocess_env later
b44a707ac289d826620a65769db8074c96cb6a7erpluem     * (exception: if r->subprocess_env is empty at the start,
b44a707ac289d826620a65769db8074c96cb6a7erpluem     * write directly into it)
b44a707ac289d826620a65769db8074c96cb6a7erpluem     */
b44a707ac289d826620a65769db8074c96cb6a7erpluem    if (apr_is_empty_table(r->subprocess_env)) {
b44a707ac289d826620a65769db8074c96cb6a7erpluem        e = r->subprocess_env;
b44a707ac289d826620a65769db8074c96cb6a7erpluem    }
b44a707ac289d826620a65769db8074c96cb6a7erpluem    else {
377225a335b5bb47e12c2739cb902f53fd869a09brianp        e = apr_table_make(r->pool, 25 + hdrs_arr->nelts);
377225a335b5bb47e12c2739cb902f53fd869a09brianp    }
377225a335b5bb47e12c2739cb902f53fd869a09brianp
377225a335b5bb47e12c2739cb902f53fd869a09brianp    /* First, add environment vars from headers... this is as per
377225a335b5bb47e12c2739cb902f53fd869a09brianp     * CGI specs, though other sorts of scripting interfaces see
377225a335b5bb47e12c2739cb902f53fd869a09brianp     * the same vars...
377225a335b5bb47e12c2739cb902f53fd869a09brianp     */
377225a335b5bb47e12c2739cb902f53fd869a09brianp
377225a335b5bb47e12c2739cb902f53fd869a09brianp    for (i = 0; i < hdrs_arr->nelts; ++i) {
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp        if (!hdrs[i].key) {
b44a707ac289d826620a65769db8074c96cb6a7erpluem            continue;
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp        }
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp        /* A few headers are special cased --- Authorization to prevent
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp         * rogue scripts from capturing passwords; content-type and -length
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp         * for no particular reason.
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp         */
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp        if (!strcasecmp(hdrs[i].key, "Content-type")) {
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp            apr_table_addn(e, "CONTENT_TYPE", hdrs[i].val);
7d37dff338a52aa8836d78e4f1a67b76911da66caaron        }
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp        else if (!strcasecmp(hdrs[i].key, "Content-length")) {
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp            apr_table_addn(e, "CONTENT_LENGTH", hdrs[i].val);
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp        }
7d37dff338a52aa8836d78e4f1a67b76911da66caaron        /*
7d37dff338a52aa8836d78e4f1a67b76911da66caaron         * You really don't want to disable this check, since it leaves you
7d37dff338a52aa8836d78e4f1a67b76911da66caaron         * wide open to CGIs stealing passwords and people viewing them
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp         * in the environment with "ps -e".  But, if you must...
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp         */
377225a335b5bb47e12c2739cb902f53fd869a09brianp#ifndef SECURITY_HOLE_PASS_AUTHORIZATION
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp        else if (!strcasecmp(hdrs[i].key, "Authorization")
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp                 || !strcasecmp(hdrs[i].key, "Proxy-Authorization")) {
c96beebb3d04691bf199a3b311d281a31f34c767chrisd            continue;
c96beebb3d04691bf199a3b311d281a31f34c767chrisd        }
c96beebb3d04691bf199a3b311d281a31f34c767chrisd#endif
c96beebb3d04691bf199a3b311d281a31f34c767chrisd        else
c96beebb3d04691bf199a3b311d281a31f34c767chrisd            add_unless_null(e, http2env(r, hdrs[i].key), hdrs[i].val);
c96beebb3d04691bf199a3b311d281a31f34c767chrisd    }
c96beebb3d04691bf199a3b311d281a31f34c767chrisd
c96beebb3d04691bf199a3b311d281a31f34c767chrisd    env_temp = apr_table_get(r->subprocess_env, "PATH");
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp    if (env_temp == NULL) {
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp        env_temp = getenv("PATH");
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp    }
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp    if (env_temp == NULL) {
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp        env_temp = DEFAULT_PATH;
49f77954252489cd8f9037e1e2d79d16a7d6897fchrisd    }
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp    apr_table_addn(e, "PATH", apr_pstrdup(r->pool, env_temp));
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp#if defined(WIN32)
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp    env2env(e, "SystemRoot");
7d37dff338a52aa8836d78e4f1a67b76911da66caaron    env2env(e, "COMSPEC");
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp    env2env(e, "PATHEXT");
4567cfc6a65328bd3e8dd2b758ca926b389c7058brianp    env2env(e, "WINDIR");
7d37dff338a52aa8836d78e4f1a67b76911da66caaron#elif defined(OS2)
7d37dff338a52aa8836d78e4f1a67b76911da66caaron    env2env(e, "COMSPEC");
7d37dff338a52aa8836d78e4f1a67b76911da66caaron    env2env(e, "ETC");
7d37dff338a52aa8836d78e4f1a67b76911da66caaron    env2env(e, "DPATH");
7d37dff338a52aa8836d78e4f1a67b76911da66caaron    env2env(e, "PERLLIB_PREFIX");
7d37dff338a52aa8836d78e4f1a67b76911da66caaron#elif defined(BEOS)
7d37dff338a52aa8836d78e4f1a67b76911da66caaron    env2env(e, "LIBRARY_PATH");
7d37dff338a52aa8836d78e4f1a67b76911da66caaron#elif defined(DARWIN)
7d37dff338a52aa8836d78e4f1a67b76911da66caaron    env2env(e, "DYLD_LIBRARY_PATH");
7d37dff338a52aa8836d78e4f1a67b76911da66caaron#elif defined(_AIX)
7d37dff338a52aa8836d78e4f1a67b76911da66caaron    env2env(e, "LIBPATH");
7d37dff338a52aa8836d78e4f1a67b76911da66caaron#elif defined(__HPUX__)
7d37dff338a52aa8836d78e4f1a67b76911da66caaron    /* HPUX PARISC 2.0W knows both, otherwise redundancy is harmless */
7d37dff338a52aa8836d78e4f1a67b76911da66caaron    env2env(e, "SHLIB_PATH");
7d37dff338a52aa8836d78e4f1a67b76911da66caaron    env2env(e, "LD_LIBRARY_PATH");
7d37dff338a52aa8836d78e4f1a67b76911da66caaron#else /* Some Unix */
c0092a7239c36c9051ab90597e7f5a07b7ef0e58jorton    env2env(e, "LD_LIBRARY_PATH");
7d37dff338a52aa8836d78e4f1a67b76911da66caaron#endif
7d37dff338a52aa8836d78e4f1a67b76911da66caaron
e00ae6859667e293a4c40108f524408ae1289f2frbb    apr_table_addn(e, "SERVER_SIGNATURE", ap_psignature("", r));
e00ae6859667e293a4c40108f524408ae1289f2frbb    apr_table_addn(e, "SERVER_SOFTWARE", ap_get_server_banner());
e00ae6859667e293a4c40108f524408ae1289f2frbb    apr_table_addn(e, "SERVER_NAME",
e00ae6859667e293a4c40108f524408ae1289f2frbb                   ap_escape_html(r->pool, ap_get_server_name_for_url(r)));
e7c42c26f9d1f8bfdc703028801bb3daff2f982aaaron    apr_table_addn(e, "SERVER_ADDR", r->connection->local_ip);  /* Apache */
e00ae6859667e293a4c40108f524408ae1289f2frbb    apr_table_addn(e, "SERVER_PORT",
e00ae6859667e293a4c40108f524408ae1289f2frbb                  apr_psprintf(r->pool, "%u", ap_get_server_port(r)));
e00ae6859667e293a4c40108f524408ae1289f2frbb    add_unless_null(e, "REMOTE_HOST",
e00ae6859667e293a4c40108f524408ae1289f2frbb                    ap_get_remote_host(c, r->per_dir_config, REMOTE_HOST, NULL));
e00ae6859667e293a4c40108f524408ae1289f2frbb    apr_table_addn(e, "REMOTE_ADDR", c->remote_ip);
e7c42c26f9d1f8bfdc703028801bb3daff2f982aaaron    apr_table_addn(e, "DOCUMENT_ROOT", ap_document_root(r));    /* Apache */
e00ae6859667e293a4c40108f524408ae1289f2frbb    apr_table_setn(e, "REQUEST_SCHEME", ap_http_scheme(r));
e00ae6859667e293a4c40108f524408ae1289f2frbb    apr_table_addn(e, "CONTEXT_PREFIX", ap_context_prefix(r));
e00ae6859667e293a4c40108f524408ae1289f2frbb    apr_table_addn(e, "CONTEXT_DOCUMENT_ROOT", ap_context_document_root(r));
d311f077fd868fef41b768dc2fbc0d31140c531ftrawick    apr_table_addn(e, "SERVER_ADMIN", s->server_admin); /* Apache */
e00ae6859667e293a4c40108f524408ae1289f2frbb    apr_table_addn(e, "SCRIPT_FILENAME", r->filename);  /* Apache */
e8f95a682820a599fe41b22977010636be5c2717jim
39ec0caa195570eff38f6c2b0d022e7f45d56310rbb    rport = c->remote_addr->port;
e00ae6859667e293a4c40108f524408ae1289f2frbb    apr_table_addn(e, "REMOTE_PORT", apr_itoa(r->pool, rport));
e00ae6859667e293a4c40108f524408ae1289f2frbb
e00ae6859667e293a4c40108f524408ae1289f2frbb    if (r->user) {
e00ae6859667e293a4c40108f524408ae1289f2frbb        apr_table_addn(e, "REMOTE_USER", r->user);
e00ae6859667e293a4c40108f524408ae1289f2frbb    }
64ff1949093e64474a00badd61a3495e35fa192daaron    else if (r->prev) {
64ff1949093e64474a00badd61a3495e35fa192daaron        request_rec *back = r->prev;
e00ae6859667e293a4c40108f524408ae1289f2frbb
a322a82f79b790fb7ddcd7df4459d20725450fa7trawick        while (back) {
b1627fe7e2cb3809dcdfdf1fcbbb6dbccaf788c6rbb            if (back->user) {
b1627fe7e2cb3809dcdfdf1fcbbb6dbccaf788c6rbb                apr_table_addn(e, "REDIRECT_REMOTE_USER", back->user);
e00ae6859667e293a4c40108f524408ae1289f2frbb                break;
e00ae6859667e293a4c40108f524408ae1289f2frbb            }
e00ae6859667e293a4c40108f524408ae1289f2frbb            back = back->prev;
a322a82f79b790fb7ddcd7df4459d20725450fa7trawick        }
39ec0caa195570eff38f6c2b0d022e7f45d56310rbb    }
b1627fe7e2cb3809dcdfdf1fcbbb6dbccaf788c6rbb    add_unless_null(e, "AUTH_TYPE", r->ap_auth_type);
a322a82f79b790fb7ddcd7df4459d20725450fa7trawick    env_temp = ap_get_remote_logname(r);
e00ae6859667e293a4c40108f524408ae1289f2frbb    if (env_temp) {
a322a82f79b790fb7ddcd7df4459d20725450fa7trawick        apr_table_addn(e, "REMOTE_IDENT", apr_pstrdup(r->pool, env_temp));
a322a82f79b790fb7ddcd7df4459d20725450fa7trawick    }
a322a82f79b790fb7ddcd7df4459d20725450fa7trawick
a322a82f79b790fb7ddcd7df4459d20725450fa7trawick    /* Apache custom error responses. If we have redirected set two new vars */
a322a82f79b790fb7ddcd7df4459d20725450fa7trawick
a322a82f79b790fb7ddcd7df4459d20725450fa7trawick    if (r->prev) {
a322a82f79b790fb7ddcd7df4459d20725450fa7trawick        add_unless_null(e, "REDIRECT_QUERY_STRING", r->prev->args);
e00ae6859667e293a4c40108f524408ae1289f2frbb        add_unless_null(e, "REDIRECT_URL", r->prev->uri);
62775acdbd932f60b1fc4ceb306c4dfeabdb92a4rbb    }
62775acdbd932f60b1fc4ceb306c4dfeabdb92a4rbb
e7c42c26f9d1f8bfdc703028801bb3daff2f982aaaron    if (e != r->subprocess_env) {
8639a789ef8a4adec121d5b26b4d66c5cf8989ccjim      apr_table_overlap(r->subprocess_env, e, APR_OVERLAP_TABLES_SET);
8639a789ef8a4adec121d5b26b4d66c5cf8989ccjim    }
e00ae6859667e293a4c40108f524408ae1289f2frbb}
e00ae6859667e293a4c40108f524408ae1289f2frbb
62775acdbd932f60b1fc4ceb306c4dfeabdb92a4rbb/* This "cute" little function comes about because the path info on
b1627fe7e2cb3809dcdfdf1fcbbb6dbccaf788c6rbb * filenames and URLs aren't always the same. So we take the two,
e00ae6859667e293a4c40108f524408ae1289f2frbb * and find as much of the two that match as possible.
e00ae6859667e293a4c40108f524408ae1289f2frbb */
e00ae6859667e293a4c40108f524408ae1289f2frbb
a322a82f79b790fb7ddcd7df4459d20725450fa7trawickAP_DECLARE(int) ap_find_path_info(const char *uri, const char *path_info)
b1627fe7e2cb3809dcdfdf1fcbbb6dbccaf788c6rbb{
b1627fe7e2cb3809dcdfdf1fcbbb6dbccaf788c6rbb    int lu = strlen(uri);
e00ae6859667e293a4c40108f524408ae1289f2frbb    int lp = strlen(path_info);
e8f95a682820a599fe41b22977010636be5c2717jim
161ee4901129514870d94dd79991025e44e96485gregames    while (lu-- && lp-- && uri[lu] == path_info[lp]) {
161ee4901129514870d94dd79991025e44e96485gregames        if (path_info[lp] == '/') {
161ee4901129514870d94dd79991025e44e96485gregames            while (lu && uri[lu-1] == '/') lu--;
e00ae6859667e293a4c40108f524408ae1289f2frbb        }
5d5d5ca04c57c7ab865924f4648e8f80de27adfebrianp    }
39ec0caa195570eff38f6c2b0d022e7f45d56310rbb
62775acdbd932f60b1fc4ceb306c4dfeabdb92a4rbb    if (lu == -1) {
a322a82f79b790fb7ddcd7df4459d20725450fa7trawick        lu = 0;
62775acdbd932f60b1fc4ceb306c4dfeabdb92a4rbb    }
a322a82f79b790fb7ddcd7df4459d20725450fa7trawick
a322a82f79b790fb7ddcd7df4459d20725450fa7trawick    while (uri[lu] != '\0' && uri[lu] != '/') {
39ec0caa195570eff38f6c2b0d022e7f45d56310rbb        lu++;
e00ae6859667e293a4c40108f524408ae1289f2frbb    }
6a5bdbbacf4a62adecde52b8f23ebcc4fa2a08b8trawick    return lu;
7e0bb2ecc6b47f00d2c60d22bbff7be3849383e2brianp}
e00ae6859667e293a4c40108f524408ae1289f2frbb
8639a789ef8a4adec121d5b26b4d66c5cf8989ccjim/* Obtain the Request-URI from the original request-line, returning
8639a789ef8a4adec121d5b26b4d66c5cf8989ccjim * a new string from the request pool containing the URI or "".
8639a789ef8a4adec121d5b26b4d66c5cf8989ccjim */
8639a789ef8a4adec121d5b26b4d66c5cf8989ccjimstatic char *original_uri(request_rec *r)
62775acdbd932f60b1fc4ceb306c4dfeabdb92a4rbb{
62775acdbd932f60b1fc4ceb306c4dfeabdb92a4rbb    char *first, *last;
e7c42c26f9d1f8bfdc703028801bb3daff2f982aaaron
e00ae6859667e293a4c40108f524408ae1289f2frbb    if (r->the_request == NULL) {
64ff1949093e64474a00badd61a3495e35fa192daaron        return (char *) apr_pcalloc(r->pool, 1);
e00ae6859667e293a4c40108f524408ae1289f2frbb    }
a322a82f79b790fb7ddcd7df4459d20725450fa7trawick
a322a82f79b790fb7ddcd7df4459d20725450fa7trawick    first = r->the_request;     /* use the request-line */
b1627fe7e2cb3809dcdfdf1fcbbb6dbccaf788c6rbb
e00ae6859667e293a4c40108f524408ae1289f2frbb    while (*first && !apr_isspace(*first)) {
a322a82f79b790fb7ddcd7df4459d20725450fa7trawick        ++first;                /* skip over the method */
b1627fe7e2cb3809dcdfdf1fcbbb6dbccaf788c6rbb    }
b1627fe7e2cb3809dcdfdf1fcbbb6dbccaf788c6rbb    while (apr_isspace(*first)) {
e00ae6859667e293a4c40108f524408ae1289f2frbb        ++first;                /*   and the space(s)   */
e00ae6859667e293a4c40108f524408ae1289f2frbb    }
e00ae6859667e293a4c40108f524408ae1289f2frbb
e00ae6859667e293a4c40108f524408ae1289f2frbb    last = first;
e00ae6859667e293a4c40108f524408ae1289f2frbb    while (*last && !apr_isspace(*last)) {
e00ae6859667e293a4c40108f524408ae1289f2frbb        ++last;                 /* end at next whitespace */
5d5d5ca04c57c7ab865924f4648e8f80de27adfebrianp    }
39ec0caa195570eff38f6c2b0d022e7f45d56310rbb
abaaa634d7cee882b7c4bf078ded749ebf11997erbb    return apr_pstrmemdup(r->pool, first, last - first);
a322a82f79b790fb7ddcd7df4459d20725450fa7trawick}
abaaa634d7cee882b7c4bf078ded749ebf11997erbb
a322a82f79b790fb7ddcd7df4459d20725450fa7trawickAP_DECLARE(void) ap_add_cgi_vars(request_rec *r)
a322a82f79b790fb7ddcd7df4459d20725450fa7trawick{
39ec0caa195570eff38f6c2b0d022e7f45d56310rbb    apr_table_t *e = r->subprocess_env;
e00ae6859667e293a4c40108f524408ae1289f2frbb
e00ae6859667e293a4c40108f524408ae1289f2frbb    apr_table_setn(e, "GATEWAY_INTERFACE", "CGI/1.1");
e00ae6859667e293a4c40108f524408ae1289f2frbb    apr_table_setn(e, "SERVER_PROTOCOL", r->protocol);
6a5bdbbacf4a62adecde52b8f23ebcc4fa2a08b8trawick    apr_table_setn(e, "REQUEST_METHOD", r->method);
6a5bdbbacf4a62adecde52b8f23ebcc4fa2a08b8trawick    apr_table_setn(e, "QUERY_STRING", r->args ? r->args : "");
6a5bdbbacf4a62adecde52b8f23ebcc4fa2a08b8trawick    apr_table_setn(e, "REQUEST_URI", original_uri(r));
e00ae6859667e293a4c40108f524408ae1289f2frbb
e00ae6859667e293a4c40108f524408ae1289f2frbb    /* Note that the code below special-cases scripts run from includes,
28c8f68d24d3511c87f7b3bd2841caa8c5621ee1brianp     * because it "knows" that the sub_request has been hacked to have the
28c8f68d24d3511c87f7b3bd2841caa8c5621ee1brianp     * args and path_info of the original request, and not any that may have
28c8f68d24d3511c87f7b3bd2841caa8c5621ee1brianp     * come with the script URI in the include command.  Ugh.
28c8f68d24d3511c87f7b3bd2841caa8c5621ee1brianp     */
6a5bdbbacf4a62adecde52b8f23ebcc4fa2a08b8trawick
6a5bdbbacf4a62adecde52b8f23ebcc4fa2a08b8trawick    if (!strcmp(r->protocol, "INCLUDED")) {
6a5bdbbacf4a62adecde52b8f23ebcc4fa2a08b8trawick        apr_table_setn(e, "SCRIPT_NAME", r->uri);
6a5bdbbacf4a62adecde52b8f23ebcc4fa2a08b8trawick        if (r->path_info && *r->path_info) {
6a5bdbbacf4a62adecde52b8f23ebcc4fa2a08b8trawick            apr_table_setn(e, "PATH_INFO", r->path_info);
6a5bdbbacf4a62adecde52b8f23ebcc4fa2a08b8trawick        }
e00ae6859667e293a4c40108f524408ae1289f2frbb    }
e8f95a682820a599fe41b22977010636be5c2717jim    else if (!r->path_info || !*r->path_info) {
e7c42c26f9d1f8bfdc703028801bb3daff2f982aaaron        apr_table_setn(e, "SCRIPT_NAME", r->uri);
8639a789ef8a4adec121d5b26b4d66c5cf8989ccjim    }
8639a789ef8a4adec121d5b26b4d66c5cf8989ccjim    else {
8639a789ef8a4adec121d5b26b4d66c5cf8989ccjim        int path_info_start = ap_find_path_info(r->uri, r->path_info);
8639a789ef8a4adec121d5b26b4d66c5cf8989ccjim
8639a789ef8a4adec121d5b26b4d66c5cf8989ccjim        apr_table_setn(e, "SCRIPT_NAME",
abaaa634d7cee882b7c4bf078ded749ebf11997erbb                      apr_pstrndup(r->pool, r->uri, path_info_start));
abaaa634d7cee882b7c4bf078ded749ebf11997erbb
2ca62d78a3050607739f4ef9c25b46c45f4c26afbrianp        apr_table_setn(e, "PATH_INFO", r->path_info);
abaaa634d7cee882b7c4bf078ded749ebf11997erbb    }
abaaa634d7cee882b7c4bf078ded749ebf11997erbb
2ca62d78a3050607739f4ef9c25b46c45f4c26afbrianp    if (r->path_info && r->path_info[0]) {
e00ae6859667e293a4c40108f524408ae1289f2frbb        /*
28c8f68d24d3511c87f7b3bd2841caa8c5621ee1brianp         * To get PATH_TRANSLATED, treat PATH_INFO as a URI path.
28c8f68d24d3511c87f7b3bd2841caa8c5621ee1brianp         * Need to re-escape it for this, since the entire URI was
39ec0caa195570eff38f6c2b0d022e7f45d56310rbb         * un-escaped before we determined where the PATH_INFO began.
39ec0caa195570eff38f6c2b0d022e7f45d56310rbb         */
e00ae6859667e293a4c40108f524408ae1289f2frbb        request_rec *pa_req;
39ec0caa195570eff38f6c2b0d022e7f45d56310rbb
a322a82f79b790fb7ddcd7df4459d20725450fa7trawick        pa_req = ap_sub_req_lookup_uri(ap_escape_uri(r->pool, r->path_info), r,
e8f95a682820a599fe41b22977010636be5c2717jim                                       NULL);
a322a82f79b790fb7ddcd7df4459d20725450fa7trawick
a322a82f79b790fb7ddcd7df4459d20725450fa7trawick        if (pa_req->filename) {
39ec0caa195570eff38f6c2b0d022e7f45d56310rbb            char *pt = apr_pstrcat(r->pool, pa_req->filename, pa_req->path_info,
64ff1949093e64474a00badd61a3495e35fa192daaron                                  NULL);
c0092a7239c36c9051ab90597e7f5a07b7ef0e58jorton#ifdef WIN32
39ec0caa195570eff38f6c2b0d022e7f45d56310rbb            /* We need to make this a real Windows path name */
39ec0caa195570eff38f6c2b0d022e7f45d56310rbb            apr_filepath_merge(&pt, "", pt, APR_FILEPATH_NATIVE, r->pool);
6a5bdbbacf4a62adecde52b8f23ebcc4fa2a08b8trawick#endif
6a5bdbbacf4a62adecde52b8f23ebcc4fa2a08b8trawick            apr_table_setn(e, "PATH_TRANSLATED", pt);
6a5bdbbacf4a62adecde52b8f23ebcc4fa2a08b8trawick        }
6a5bdbbacf4a62adecde52b8f23ebcc4fa2a08b8trawick        ap_destroy_sub_req(pa_req);
6a5bdbbacf4a62adecde52b8f23ebcc4fa2a08b8trawick    }
6a5bdbbacf4a62adecde52b8f23ebcc4fa2a08b8trawick}
6a5bdbbacf4a62adecde52b8f23ebcc4fa2a08b8trawick
6a5bdbbacf4a62adecde52b8f23ebcc4fa2a08b8trawick
e8f95a682820a599fe41b22977010636be5c2717jimstatic int set_cookie_doo_doo(void *v, const char *key, const char *val)
6a5bdbbacf4a62adecde52b8f23ebcc4fa2a08b8trawick{
6a5bdbbacf4a62adecde52b8f23ebcc4fa2a08b8trawick    apr_table_addn(v, key, val);
6a5bdbbacf4a62adecde52b8f23ebcc4fa2a08b8trawick    return 1;
6a5bdbbacf4a62adecde52b8f23ebcc4fa2a08b8trawick}
6a5bdbbacf4a62adecde52b8f23ebcc4fa2a08b8trawick
6a5bdbbacf4a62adecde52b8f23ebcc4fa2a08b8trawick#define HTTP_UNSET (-HTTP_OK)
6a5bdbbacf4a62adecde52b8f23ebcc4fa2a08b8trawick#define SCRIPT_LOG_MARK  __FILE__,__LINE__,module_index
6a5bdbbacf4a62adecde52b8f23ebcc4fa2a08b8trawick
AP_DECLARE(int) ap_scan_script_header_err_core_ex(request_rec *r, char *buffer,
                                       int (*getsfunc) (char *, int, void *),
                                       void *getsfunc_data,
                                       int module_index)
{
    char x[MAX_STRING_LEN];
    char *w, *l;
    int p;
    int cgi_status = HTTP_UNSET;
    apr_table_t *merge;
    apr_table_t *cookie_table;
    int trace_log = APLOG_R_MODULE_IS_LEVEL(r, module_index, APLOG_TRACE1);
    int first_header = 1;

    if (buffer) {
        *buffer = '\0';
    }
    w = buffer ? buffer : x;

    /* temporary place to hold headers to merge in later */
    merge = apr_table_make(r->pool, 10);

    /* The HTTP specification says that it is legal to merge duplicate
     * headers into one.  Some browsers that support Cookies don't like
     * merged headers and prefer that each Set-Cookie header is sent
     * separately.  Lets humour those browsers by not merging.
     * Oh what a pain it is.
     */
    cookie_table = apr_table_make(r->pool, 2);
    apr_table_do(set_cookie_doo_doo, cookie_table, r->err_headers_out, "Set-Cookie", NULL);

    while (1) {

        int rv = (*getsfunc) (w, MAX_STRING_LEN - 1, getsfunc_data);
        if (rv == 0) {
            const char *msg = "Premature end of script headers";
            if (first_header)
                msg = "End of script output before headers";
            ap_log_rerror(SCRIPT_LOG_MARK, APLOG_ERR|APLOG_TOCLIENT, 0, r,
                          "%s: %s", msg,
                          apr_filepath_name_get(r->filename));
            return HTTP_INTERNAL_SERVER_ERROR;
        }
        else if (rv == -1) {
            ap_log_rerror(SCRIPT_LOG_MARK, APLOG_ERR|APLOG_TOCLIENT, 0, r,
                          "Script timed out before returning headers: %s",
                          apr_filepath_name_get(r->filename));
            return HTTP_GATEWAY_TIME_OUT;
        }

        /* Delete terminal (CR?)LF */

        p = strlen(w);
             /* Indeed, the host's '\n':
                '\012' for UNIX; '\015' for MacOS; '\025' for OS/390
                 -- whatever the script generates.
             */
        if (p > 0 && w[p - 1] == '\n') {
            if (p > 1 && w[p - 2] == CR) {
                w[p - 2] = '\0';
            }
            else {
                w[p - 1] = '\0';
            }
        }

        /*
         * If we've finished reading the headers, check to make sure any
         * HTTP/1.1 conditions are met.  If so, we're done; normal processing
         * will handle the script's output.  If not, just return the error.
         * The appropriate thing to do would be to send the script process a
         * SIGPIPE to let it know we're ignoring it, close the channel to the
         * script process, and *then* return the failed-to-meet-condition
         * error.  Otherwise we'd be waiting for the script to finish
         * blithering before telling the client the output was no good.
         * However, we don't have the information to do that, so we have to
         * leave it to an upper layer.
         */
        if (w[0] == '\0') {
            int cond_status = OK;

            /* PR#38070: This fails because it gets confused when a
             * CGI Status header overrides ap_meets_conditions.
             *
             * We can fix that by dropping ap_meets_conditions when
             * Status has been set.  Since this is the only place
             * cgi_status gets used, let's test it explicitly.
             *
             * The alternative would be to ignore CGI Status when
             * ap_meets_conditions returns anything interesting.
             * That would be safer wrt HTTP, but would break CGI.
             */
            if ((cgi_status == HTTP_UNSET) && (r->method_number == M_GET)) {
                cond_status = ap_meets_conditions(r);
            }
            apr_table_overlap(r->err_headers_out, merge,
                APR_OVERLAP_TABLES_MERGE);
            if (!apr_is_empty_table(cookie_table)) {
                /* the cookies have already been copied to the cookie_table */
                apr_table_unset(r->err_headers_out, "Set-Cookie");
                r->err_headers_out = apr_table_overlay(r->pool,
                    r->err_headers_out, cookie_table);
            }
            return cond_status;
        }

        if (trace_log) {
            if (first_header)
                ap_log_rerror(SCRIPT_LOG_MARK, APLOG_TRACE4, 0, r,
                              "Headers from script '%s':",
                              apr_filepath_name_get(r->filename));
            ap_log_rerror(SCRIPT_LOG_MARK, APLOG_TRACE4, 0, r, "  %s", w);
        }

        /* if we see a bogus header don't ignore it. Shout and scream */

#if APR_CHARSET_EBCDIC
            /* Chances are that we received an ASCII header text instead of
             * the expected EBCDIC header lines. Try to auto-detect:
             */
        if (!(l = strchr(w, ':'))) {
            int maybeASCII = 0, maybeEBCDIC = 0;
            unsigned char *cp, native;
            apr_size_t inbytes_left, outbytes_left;

            for (cp = w; *cp != '\0'; ++cp) {
                native = apr_xlate_conv_byte(ap_hdrs_from_ascii, *cp);
                if (apr_isprint(*cp) && !apr_isprint(native))
                    ++maybeEBCDIC;
                if (!apr_isprint(*cp) && apr_isprint(native))
                    ++maybeASCII;
            }
            if (maybeASCII > maybeEBCDIC) {
                ap_log_error(SCRIPT_LOG_MARK, APLOG_ERR, 0, r->server,
                             "CGI Interface Error: Script headers apparently ASCII: (CGI = %s)",
                             r->filename);
                inbytes_left = outbytes_left = cp - w;
                apr_xlate_conv_buffer(ap_hdrs_from_ascii,
                                      w, &inbytes_left, w, &outbytes_left);
            }
        }
#endif /*APR_CHARSET_EBCDIC*/
        if (!(l = strchr(w, ':'))) {
            if (!buffer) {
                /* Soak up all the script output - may save an outright kill */
                while ((*getsfunc) (w, MAX_STRING_LEN - 1, getsfunc_data)) {
                    continue;
                }
            }

            ap_log_rerror(SCRIPT_LOG_MARK, APLOG_ERR|APLOG_TOCLIENT, 0, r,
                          "malformed header from script '%s': Bad header: %.30s",
                          apr_filepath_name_get(r->filename), w);
            return HTTP_INTERNAL_SERVER_ERROR;
        }

        *l++ = '\0';
        while (*l && apr_isspace(*l)) {
            ++l;
        }

        if (!strcasecmp(w, "Content-type")) {
            char *tmp;

            /* Nuke trailing whitespace */

            char *endp = l + strlen(l) - 1;
            while (endp > l && apr_isspace(*endp)) {
                *endp-- = '\0';
            }

            tmp = apr_pstrdup(r->pool, l);
            ap_content_type_tolower(tmp);
            ap_set_content_type(r, tmp);
        }
        /*
         * If the script returned a specific status, that's what
         * we'll use - otherwise we assume 200 OK.
         */
        else if (!strcasecmp(w, "Status")) {
            r->status = cgi_status = atoi(l);
            if (!ap_is_HTTP_VALID_RESPONSE(cgi_status))
                ap_log_rerror(SCRIPT_LOG_MARK, APLOG_ERR|APLOG_TOCLIENT, 0, r,
                              "Invalid status line from script '%s': %s",
                              apr_filepath_name_get(r->filename), w);
            else
                ap_log_rerror(SCRIPT_LOG_MARK, APLOG_TRACE1, 0, r,
                              "Status line from script '%s': %s",
                              apr_filepath_name_get(r->filename), w);
            r->status_line = apr_pstrdup(r->pool, l);
        }
        else if (!strcasecmp(w, "Location")) {
            apr_table_set(r->headers_out, w, l);
        }
        else if (!strcasecmp(w, "Content-Length")) {
            apr_table_set(r->headers_out, w, l);
        }
        else if (!strcasecmp(w, "Content-Range")) {
            apr_table_set(r->headers_out, w, l);
        }
        else if (!strcasecmp(w, "Transfer-Encoding")) {
            apr_table_set(r->headers_out, w, l);
        }
        else if (!strcasecmp(w, "ETag")) {
            apr_table_set(r->headers_out, w, l);
        }
        /*
         * If the script gave us a Last-Modified header, we can't just
         * pass it on blindly because of restrictions on future values.
         */
        else if (!strcasecmp(w, "Last-Modified")) {
            ap_update_mtime(r, apr_date_parse_http(l));
            ap_set_last_modified(r);
        }
        else if (!strcasecmp(w, "Set-Cookie")) {
            apr_table_add(cookie_table, w, l);
        }
        else {
            apr_table_add(merge, w, l);
        }
        first_header = 0;
    }
    /* never reached - we leave this function within the while loop above */
    return OK;
}

AP_DECLARE(int) ap_scan_script_header_err_core(request_rec *r, char *buffer,
                                       int (*getsfunc) (char *, int, void *),
                                       void *getsfunc_data)
{
    return ap_scan_script_header_err_core_ex(r, buffer, getsfunc,
                                             getsfunc_data,
                                             APLOG_MODULE_INDEX);
}

static int getsfunc_FILE(char *buf, int len, void *f)
{
    return apr_file_gets(buf, len, (apr_file_t *) f) == APR_SUCCESS;
}

AP_DECLARE(int) ap_scan_script_header_err(request_rec *r, apr_file_t *f,
                                          char *buffer)
{
    return ap_scan_script_header_err_core_ex(r, buffer, getsfunc_FILE, f,
                                             APLOG_MODULE_INDEX);
}

AP_DECLARE(int) ap_scan_script_header_err_ex(request_rec *r, apr_file_t *f,
                                          char *buffer, int module_index)
{
    return ap_scan_script_header_err_core_ex(r, buffer, getsfunc_FILE, f,
                                             module_index);
}


static int getsfunc_BRIGADE(char *buf, int len, void *arg)
{
    apr_bucket_brigade *bb = (apr_bucket_brigade *)arg;
    const char *dst_end = buf + len - 1; /* leave room for terminating null */
    char *dst = buf;
    apr_bucket *e = APR_BRIGADE_FIRST(bb);
    apr_status_t rv;
    int done = 0;

    while ((dst < dst_end) && !done && !APR_BUCKET_IS_EOS(e)) {
        const char *bucket_data;
        apr_size_t bucket_data_len;
        const char *src;
        const char *src_end;
        apr_bucket * next;

        rv = apr_bucket_read(e, &bucket_data, &bucket_data_len,
                             APR_BLOCK_READ);
        if (rv != APR_SUCCESS || (bucket_data_len == 0)) {
            return APR_STATUS_IS_TIMEUP(rv) ? -1 : 0;
        }
        src = bucket_data;
        src_end = bucket_data + bucket_data_len;
        while ((src < src_end) && (dst < dst_end) && !done) {
            if (*src == '\n') {
                done = 1;
            }
            else if (*src != '\r') {
                *dst++ = *src;
            }
            src++;
        }

        if (src < src_end) {
            apr_bucket_split(e, src - bucket_data);
        }
        next = APR_BUCKET_NEXT(e);
        APR_BUCKET_REMOVE(e);
        apr_bucket_destroy(e);
        e = next;
    }
    *dst = 0;
    return 1;
}

AP_DECLARE(int) ap_scan_script_header_err_brigade(request_rec *r,
                                                  apr_bucket_brigade *bb,
                                                  char *buffer)
{
    return ap_scan_script_header_err_core_ex(r, buffer, getsfunc_BRIGADE, bb,
                                             APLOG_MODULE_INDEX);
}

AP_DECLARE(int) ap_scan_script_header_err_brigade_ex(request_rec *r,
                                                     apr_bucket_brigade *bb,
                                                     char *buffer,
                                                     int module_index)
{
    return ap_scan_script_header_err_core_ex(r, buffer, getsfunc_BRIGADE, bb,
                                             module_index);
}


struct vastrs {
    va_list args;
    int arg;
    const char *curpos;
};

static int getsfunc_STRING(char *w, int len, void *pvastrs)
{
    struct vastrs *strs = (struct vastrs*) pvastrs;
    const char *p;
    int t;

    if (!strs->curpos || !*strs->curpos)
        return 0;
    p = ap_strchr_c(strs->curpos, '\n');
    if (p)
        ++p;
    else
        p = ap_strchr_c(strs->curpos, '\0');
    t = p - strs->curpos;
    if (t > len)
        t = len;
    strncpy (w, strs->curpos, t);
    w[t] = '\0';
    if (!strs->curpos[t]) {
        ++strs->arg;
        strs->curpos = va_arg(strs->args, const char *);
    }
    else
        strs->curpos += t;
    return t;
}

/* ap_scan_script_header_err_strs() accepts additional const char* args...
 * each is treated as one or more header lines, and the first non-header
 * character is returned to **arg, **data.  (The first optional arg is
 * counted as 0.)
 */
AP_DECLARE_NONSTD(int) ap_scan_script_header_err_strs_ex(request_rec *r,
                                                         char *buffer,
                                                         int module_index,
                                                         const char **termch,
                                                         int *termarg, ...)
{
    struct vastrs strs;
    int res;

    va_start(strs.args, termarg);
    strs.arg = 0;
    strs.curpos = va_arg(strs.args, char*);
    res = ap_scan_script_header_err_core_ex(r, buffer, getsfunc_STRING,
                                            (void *) &strs, module_index);
    if (termch)
        *termch = strs.curpos;
    if (termarg)
        *termarg = strs.arg;
    va_end(strs.args);
    return res;
}

AP_DECLARE_NONSTD(int) ap_scan_script_header_err_strs(request_rec *r,
                                                      char *buffer,
                                                      const char **termch,
                                                      int *termarg, ...)
{
    struct vastrs strs;
    int res;

    va_start(strs.args, termarg);
    strs.arg = 0;
    strs.curpos = va_arg(strs.args, char*);
    res = ap_scan_script_header_err_core_ex(r, buffer, getsfunc_STRING,
                                            (void *) &strs, APLOG_MODULE_INDEX);
    if (termch)
        *termch = strs.curpos;
    if (termarg)
        *termarg = strs.arg;
    va_end(strs.args);
    return res;
}

static void
argstr_to_table(char *str, apr_table_t *parms)
{
    char *key;
    char *value;
    char *strtok_state;

    if (str == NULL) {
        return;
    }

    key = apr_strtok(str, "&", &strtok_state);
    while (key) {
        value = strchr(key, '=');
        if (value) {
            *value = '\0';      /* Split the string in two */
            value++;            /* Skip passed the = */
        }
        else {
            value = "1";
        }
        ap_unescape_url(key);
        ap_unescape_url(value);
        apr_table_set(parms, key, value);
        key = apr_strtok(NULL, "&", &strtok_state);
    }
}

AP_DECLARE(void) ap_args_to_table(request_rec *r, apr_table_t **table)
{
    apr_table_t *t = apr_table_make(r->pool, 10);
    argstr_to_table(apr_pstrdup(r->pool, r->args), t);
    *table = t;
}