horok/apache2
1
0
Fork 0
Code Activity
apache2/modules/generators/mod_cgi.c
Daniel Baumann 7263481e48
Adding upstream version 2.4.63. 
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
2025-06-22 11:01:26 +02:00

780 lines
26 KiB
C
Raw Permalink Blame History

/* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* http_script: keeps all script-related ramblings together.
*
* Compliant to CGI/1.1 spec
*
* Adapted by rst from original NCSA code by Rob McCool
*
* This modules uses a httpd core function (ap_add_common_vars) to add some new env vars,
* like REDIRECT_URL and REDIRECT_QUERY_STRING for custom error responses and DOCUMENT_ROOT.
* It also adds SERVER_ADMIN - useful for scripts to know who to mail when they fail.
*
*/
#include "apr.h"
#include "apr_strings.h"
#include "apr_thread_proc.h" /* for RLIMIT stuff */
#include "apr_optional.h"
#include "apr_buckets.h"
#include "apr_lib.h"
#include "apr_poll.h"
#define APR_WANT_STRFUNC
#define APR_WANT_MEMFUNC
#include "apr_want.h"
#include "util_filter.h"
#include "ap_config.h"
#include "httpd.h"
#include "http_config.h"
#include "http_request.h"
#include "http_core.h"
#include "http_protocol.h"
#include "http_main.h"
#include "http_log.h"
#include "ap_mpm.h"
#include "mod_core.h"
#include "mod_cgi.h"
#if APR_HAVE_STRUCT_RLIMIT
#if defined (RLIMIT_CPU) || defined (RLIMIT_NPROC) || defined (RLIMIT_DATA) || defined(RLIMIT_VMEM) || defined(RLIMIT_AS)
#define AP_CGI_USE_RLIMIT
#endif
#endif
module AP_MODULE_DECLARE_DATA cgi_module;
static APR_OPTIONAL_FN_TYPE(ap_cgi_build_command) *cgi_build_command;
/* Read and discard the data in the brigade produced by a CGI script */
static void discard_script_output(apr_bucket_brigade *bb);
/* KLUDGE --- for back-combatibility, we don't have to check ExecCGI
* in ScriptAliased directories, which means we need to know if this
* request came through ScriptAlias or not... so the Alias module
* leaves a note for us.
*/
static int is_scriptaliased(request_rec *r)
{
const char *t = apr_table_get(r->notes, "alias-forced-type");
return t && (!strcasecmp(t, "cgi-script"));
}
/* Configuration stuff */
#define DEFAULT_LOGBYTES 10385760
#define DEFAULT_BUFBYTES 1024
typedef struct {
const char *logname;
long logbytes;
apr_size_t bufbytes;
} cgi_server_conf;
typedef struct {
apr_interval_time_t timeout;
} cgi_dirconf;
#if APR_FILES_AS_SOCKETS
#define WANT_CGI_BUCKET
#endif
#include "cgi_common.h"
static void *create_cgi_config(apr_pool_t *p, server_rec *s)
{
cgi_server_conf *c =
(cgi_server_conf *) apr_pcalloc(p, sizeof(cgi_server_conf));
c->logname = NULL;
c->logbytes = DEFAULT_LOGBYTES;
c->bufbytes = DEFAULT_BUFBYTES;
return c;
}
static void *merge_cgi_config(apr_pool_t *p, void *basev, void *overridesv)
{
cgi_server_conf *base = (cgi_server_conf *) basev,
*overrides = (cgi_server_conf *) overridesv;
return overrides->logname ? overrides : base;
}
static void *create_cgi_dirconf(apr_pool_t *p, char *dummy)
{
cgi_dirconf *c = (cgi_dirconf *) apr_pcalloc(p, sizeof(cgi_dirconf));
return c;
}
static const char *set_scriptlog(cmd_parms *cmd, void *dummy, const char *arg)
{
server_rec *s = cmd->server;
cgi_server_conf *conf = ap_get_module_config(s->module_config,
&cgi_module);
conf->logname = ap_server_root_relative(cmd->pool, arg);
if (!conf->logname) {
return apr_pstrcat(cmd->pool, "Invalid ScriptLog path ",
arg, NULL);
}
return NULL;
}
static const char *set_scriptlog_length(cmd_parms *cmd, void *dummy,
const char *arg)
{
server_rec *s = cmd->server;
cgi_server_conf *conf = ap_get_module_config(s->module_config,
&cgi_module);
conf->logbytes = atol(arg);
return NULL;
}
static const char *set_scriptlog_buffer(cmd_parms *cmd, void *dummy,
const char *arg)
{
server_rec *s = cmd->server;
cgi_server_conf *conf = ap_get_module_config(s->module_config,
&cgi_module);
conf->bufbytes = atoi(arg);
return NULL;
}
static const char *set_script_timeout(cmd_parms *cmd, void *dummy, const char *arg)
{
cgi_dirconf *dc = dummy;
if (ap_timeout_parameter_parse(arg, &dc->timeout, "s") != APR_SUCCESS) {
return "CGIScriptTimeout has wrong format";
}
return NULL;
}
static const command_rec cgi_cmds[] =
{
AP_INIT_TAKE1("ScriptLog", set_scriptlog, NULL, RSRC_CONF,
"the name of a log for script debugging info"),
AP_INIT_TAKE1("ScriptLogLength", set_scriptlog_length, NULL, RSRC_CONF,
"the maximum length (in bytes) of the script debug log"),
AP_INIT_TAKE1("ScriptLogBuffer", set_scriptlog_buffer, NULL, RSRC_CONF,
"the maximum size (in bytes) to record of a POST request"),
AP_INIT_TAKE1("CGIScriptTimeout", set_script_timeout, NULL, RSRC_CONF | ACCESS_CONF,
"The amount of time to wait between successful reads from "
"the CGI script, in seconds."),
{NULL}
};
static int log_script(request_rec *r, cgi_server_conf * conf, int ret,
char *dbuf, const char *sbuf, apr_bucket_brigade *bb,
apr_file_t *script_err)
{
const apr_array_header_t *hdrs_arr = apr_table_elts(r->headers_in);
const apr_table_entry_t *hdrs = (const apr_table_entry_t *) hdrs_arr->elts;
char argsbuffer[HUGE_STRING_LEN];
apr_file_t *f = NULL;
apr_bucket *e;
const char *buf;
apr_size_t len;
apr_status_t rv;
int first;
int i;
apr_finfo_t finfo;
char time_str[APR_CTIME_LEN];
/* XXX Very expensive mainline case! Open, then getfileinfo! */
if (!conf->logname ||
((apr_stat(&finfo, conf->logname,
APR_FINFO_SIZE, r->pool) == APR_SUCCESS) &&
(finfo.size > conf->logbytes)) ||
(apr_file_open(&f, conf->logname,
APR_APPEND|APR_WRITE|APR_CREATE, APR_OS_DEFAULT,
r->pool) != APR_SUCCESS)) {
/* Soak up script output */
discard_script_output(bb);
log_script_err(r, script_err);
return ret;
}
/* "%% [Wed Jun 19 10:53:21 1996] GET /cgi-bin/printenv HTTP/1.0" */
apr_ctime(time_str, apr_time_now());
apr_file_printf(f, "%%%% [%s] %s %s%s%s %s\n", time_str, r->method, r->uri,
r->args ? "?" : "", r->args ? r->args : "", r->protocol);
/* "%% 500 /usr/local/apache/cgi-bin" */
apr_file_printf(f, "%%%% %d %s\n", ret, r->filename);
apr_file_puts("%request\n", f);
for (i = 0; i < hdrs_arr->nelts; ++i) {
if (!hdrs[i].key)
continue;
apr_file_printf(f, "%s: %s\n", hdrs[i].key, hdrs[i].val);
}
if ((r->method_number == M_POST || r->method_number == M_PUT) &&
*dbuf) {
apr_file_printf(f, "\n%s\n", dbuf);
}
apr_file_puts("%response\n", f);
hdrs_arr = apr_table_elts(r->err_headers_out);
hdrs = (const apr_table_entry_t *) hdrs_arr->elts;
for (i = 0; i < hdrs_arr->nelts; ++i) {
if (!hdrs[i].key)
continue;
apr_file_printf(f, "%s: %s\n", hdrs[i].key, hdrs[i].val);
}
if (sbuf && *sbuf)
apr_file_printf(f, "%s\n", sbuf);
first = 1;
for (e = APR_BRIGADE_FIRST(bb);
e != APR_BRIGADE_SENTINEL(bb);
e = APR_BUCKET_NEXT(e))
{
if (APR_BUCKET_IS_EOS(e)) {
break;
}
rv = apr_bucket_read(e, &buf, &len, APR_BLOCK_READ);
if (rv != APR_SUCCESS || (len == 0)) {
break;
}
if (first) {
apr_file_puts("%stdout\n", f);
first = 0;
}
apr_file_write(f, buf, &len);
apr_file_puts("\n", f);
}
if (apr_file_gets(argsbuffer, HUGE_STRING_LEN, script_err) == APR_SUCCESS) {
apr_file_puts("%stderr\n", f);
apr_file_puts(argsbuffer, f);
while (apr_file_gets(argsbuffer, HUGE_STRING_LEN,
script_err) == APR_SUCCESS) {
apr_file_puts(argsbuffer, f);
}
apr_file_puts("\n", f);
}
apr_brigade_destroy(bb);
apr_file_close(script_err);
apr_file_close(f);
return ret;
}
/* This is the special environment used for running the "exec cmd="
* variety of SSI directives.
*/
static void add_ssi_vars(request_rec *r)
{
apr_table_t *e = r->subprocess_env;
if (r->path_info && r->path_info[0] != '\0') {
request_rec *pa_req;
apr_table_setn(e, "PATH_INFO", ap_escape_shell_cmd(r->pool,
r->path_info));
pa_req = ap_sub_req_lookup_uri(ap_escape_uri(r->pool, r->path_info),
r, NULL);
if (pa_req->filename) {
apr_table_setn(e, "PATH_TRANSLATED",
apr_pstrcat(r->pool, pa_req->filename,
pa_req->path_info, NULL));
}
ap_destroy_sub_req(pa_req);
}
if (r->args) {
char *arg_copy = apr_pstrdup(r->pool, r->args);
apr_table_setn(e, "QUERY_STRING", r->args);
ap_unescape_url(arg_copy);
apr_table_setn(e, "QUERY_STRING_UNESCAPED",
ap_escape_shell_cmd(r->pool, arg_copy));
}
}
static void cgi_child_errfn(apr_pool_t *pool, apr_status_t err,
const char *description)
{
apr_file_t *stderr_log;
apr_file_open_stderr(&stderr_log, pool);
/* Escape the logged string because it may be something that
* came in over the network.
*/
apr_file_printf(stderr_log,
"(%d)%pm: %s\n",
err,
&err,
#ifndef AP_UNSAFE_ERROR_LOG_UNESCAPED
ap_escape_logitem(pool,
#endif
description
#ifndef AP_UNSAFE_ERROR_LOG_UNESCAPED
)
#endif
);
}
static apr_status_t run_cgi_child(apr_file_t **script_out,
apr_file_t **script_in,
apr_file_t **script_err,
const char *command,
const char * const argv[],
request_rec *r,
apr_pool_t *p,
cgi_exec_info_t *e_info)
{
const char * const *env;
apr_procattr_t *procattr;
apr_proc_t *procnew;
apr_status_t rc = APR_SUCCESS;
#ifdef AP_CGI_USE_RLIMIT
core_dir_config *conf = ap_get_core_module_config(r->per_dir_config);
#endif
#ifdef DEBUG_CGI
#ifdef OS2
/* Under OS/2 need to use device con. */
FILE *dbg = fopen("con", "w");
#else
FILE *dbg = fopen("/dev/tty", "w");
#endif
int i;
#endif
RAISE_SIGSTOP(CGI_CHILD);
#ifdef DEBUG_CGI
fprintf(dbg, "Attempting to exec %s as CGI child (argv0 = %s)\n",
r->filename, argv[0]);
#endif
env = (const char * const *)ap_create_environment(p, r->subprocess_env);
#ifdef DEBUG_CGI
fprintf(dbg, "Environment: \n");
for (i = 0; env[i]; ++i)
fprintf(dbg, "'%s'\n", env[i]);
fclose(dbg);
#endif
/* Transmute ourselves into the script.
* NB only ISINDEX scripts get decoded arguments.
*/
if (((rc = apr_procattr_create(&procattr, p)) != APR_SUCCESS) ||
((rc = apr_procattr_io_set(procattr,
e_info->in_pipe,
e_info->out_pipe,
e_info->err_pipe)) != APR_SUCCESS) ||
((rc = apr_procattr_dir_set(procattr,
ap_make_dirstr_parent(r->pool,
r->filename))) != APR_SUCCESS) ||
#if defined(RLIMIT_CPU) && defined(AP_CGI_USE_RLIMIT)
((rc = apr_procattr_limit_set(procattr, APR_LIMIT_CPU,
conf->limit_cpu)) != APR_SUCCESS) ||
#endif
#if defined(AP_CGI_USE_RLIMIT) && (defined(RLIMIT_DATA) || defined(RLIMIT_VMEM) || defined(RLIMIT_AS))
((rc = apr_procattr_limit_set(procattr, APR_LIMIT_MEM,
conf->limit_mem)) != APR_SUCCESS) ||
#endif
#if defined(RLIMIT_NPROC) && defined(AP_CGI_USE_RLIMIT)
((rc = apr_procattr_limit_set(procattr, APR_LIMIT_NPROC,
conf->limit_nproc)) != APR_SUCCESS) ||
#endif
((rc = apr_procattr_cmdtype_set(procattr,
e_info->cmd_type)) != APR_SUCCESS) ||
((rc = apr_procattr_detach_set(procattr,
e_info->detached)) != APR_SUCCESS) ||
((rc = apr_procattr_addrspace_set(procattr,
e_info->addrspace)) != APR_SUCCESS) ||
((rc = apr_procattr_child_errfn_set(procattr, cgi_child_errfn)) != APR_SUCCESS)) {
/* Something bad happened, tell the world. */
ap_log_rerror(APLOG_MARK, APLOG_ERR, rc, r, APLOGNO(01216)
"couldn't set child process attributes: %s", r->filename);
}
else {
procnew = apr_pcalloc(p, sizeof(*procnew));
rc = ap_os_create_privileged_process(r, procnew, command, argv, env,
procattr, p);
if (rc != APR_SUCCESS) {
/* Bad things happened. Everyone should have cleaned up. */
/* Intentional no APLOGNO */
ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_TOCLIENT, rc, r,
"couldn't create child process: %d: %s", rc,
apr_filepath_name_get(r->filename));
}
else {
cgi_dirconf *dc = ap_get_module_config(r->per_dir_config, &cgi_module);
apr_interval_time_t timeout = dc->timeout > 0 ? dc->timeout : r->server->timeout;
apr_pool_note_subprocess(p, procnew, APR_KILL_AFTER_TIMEOUT);
*script_in = procnew->out;
if (!*script_in)
return APR_EBADF;
apr_file_pipe_timeout_set(*script_in, timeout);
if (e_info->prog_type == RUN_AS_CGI) {
*script_out = procnew->in;
if (!*script_out)
return APR_EBADF;
apr_file_pipe_timeout_set(*script_out, timeout);
*script_err = procnew->err;
if (!*script_err)
return APR_EBADF;
apr_file_pipe_timeout_set(*script_err, timeout);
}
}
}
return (rc);
}
static apr_status_t default_build_command(const char **cmd, const char ***argv,
request_rec *r, apr_pool_t *p,
cgi_exec_info_t *e_info)
{
int numwords, x, idx;
char *w;
const char *args = NULL;
if (e_info->process_cgi) {
*cmd = r->filename;
/* Do not process r->args if they contain an '=' assignment
*/
if (r->args && r->args[0] && !ap_strchr_c(r->args, '=')) {
args = r->args;
}
}
if (!args) {
numwords = 1;
}
else {
/* count the number of keywords */
for (x = 0, numwords = 2; args[x]; x++) {
if (args[x] == '+') {
++numwords;
}
}
}
/* Everything is - 1 to account for the first parameter
* which is the program name.
*/
if (numwords > APACHE_ARG_MAX - 1) {
numwords = APACHE_ARG_MAX - 1; /* Truncate args to prevent overrun */
}
*argv = apr_palloc(p, (numwords + 2) * sizeof(char *));
(*argv)[0] = *cmd;
for (x = 1, idx = 1; x < numwords; x++) {
w = ap_getword_nulls(p, &args, '+');
ap_unescape_url(w);
(*argv)[idx++] = ap_escape_shell_cmd(p, w);
}
(*argv)[idx] = NULL;
return APR_SUCCESS;
}
static int cgi_handler(request_rec *r)
{
int nph;
apr_size_t dbufsize;
const char *argv0;
const char *command;
const char **argv;
char *dbuf = NULL;
apr_file_t *script_out = NULL, *script_in = NULL, *script_err = NULL;
conn_rec *c = r->connection;
apr_bucket_brigade *bb = apr_brigade_create(r->pool, c->bucket_alloc);
apr_bucket *b;
int is_included;
apr_pool_t *p;
cgi_server_conf *conf;
apr_status_t rv;
cgi_exec_info_t e_info;
cgi_dirconf *dc = ap_get_module_config(r->per_dir_config, &cgi_module);
apr_interval_time_t timeout = dc->timeout > 0 ? dc->timeout : r->server->timeout;
if (strcmp(r->handler, CGI_MAGIC_TYPE) && strcmp(r->handler, "cgi-script")) {
return DECLINED;
}
is_included = !strcmp(r->protocol, "INCLUDED");
p = r->main ? r->main->pool : r->pool;
argv0 = apr_filepath_name_get(r->filename);
nph = !(strncmp(argv0, "nph-", 4));
conf = ap_get_module_config(r->server->module_config, &cgi_module);
if (!(ap_allow_options(r) & OPT_EXECCGI) && !is_scriptaliased(r))
return log_scripterror(r, conf, HTTP_FORBIDDEN, 0, APLOGNO(02809),
"Options ExecCGI is off in this directory");
if (nph && is_included)
return log_scripterror(r, conf, HTTP_FORBIDDEN, 0, APLOGNO(02810),
"attempt to include NPH CGI script");
if (r->finfo.filetype == APR_NOFILE)
return log_scripterror(r, conf, HTTP_NOT_FOUND, 0, APLOGNO(02811),
"script not found or unable to stat");
if (r->finfo.filetype == APR_DIR)
return log_scripterror(r, conf, HTTP_FORBIDDEN, 0, APLOGNO(02812),
"attempt to invoke directory as script");
if ((r->used_path_info == AP_REQ_REJECT_PATH_INFO) &&
r->path_info && *r->path_info)
{
/* default to accept */
return log_scripterror(r, conf, HTTP_NOT_FOUND, 0, APLOGNO(02813),
"AcceptPathInfo off disallows user's path");
}
/*
if (!ap_suexec_enabled) {
if (!ap_can_exec(&r->finfo))
return log_scripterror(r, conf, HTTP_FORBIDDEN, 0, APLOGNO(03194)
"file permissions deny server execution");
}
*/
ap_add_common_vars(r);
ap_add_cgi_vars(r);
e_info.process_cgi = 1;
e_info.cmd_type = APR_PROGRAM;
e_info.detached = 0;
e_info.in_pipe = APR_CHILD_BLOCK;
e_info.out_pipe = APR_CHILD_BLOCK;
e_info.err_pipe = APR_CHILD_BLOCK;
e_info.prog_type = RUN_AS_CGI;
e_info.bb = NULL;
e_info.ctx = NULL;
e_info.next = NULL;
e_info.addrspace = 0;
/* build the command line */
if ((rv = cgi_build_command(&command, &argv, r, p, &e_info)) != APR_SUCCESS) {
ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, APLOGNO(01222)
"don't know how to spawn child process: %s",
r->filename);
return HTTP_INTERNAL_SERVER_ERROR;
}
/* run the script in its own process */
if ((rv = run_cgi_child(&script_out, &script_in, &script_err,
command, argv, r, p, &e_info)) != APR_SUCCESS) {
ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, APLOGNO(01223)
"couldn't spawn child process: %s", r->filename);
return HTTP_INTERNAL_SERVER_ERROR;
}
/* Buffer for logging script stdout. */
if (conf->logname) {
dbufsize = conf->bufbytes;
dbuf = apr_palloc(r->pool, dbufsize + 1);
}
else {
dbufsize = 0;
dbuf = NULL;
}
/* Read the request body. */
rv = cgi_handle_request(r, script_out, bb, dbuf, dbufsize);
if (rv) {
ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, APLOGNO(01225)
"Error reading request entity data");
return ap_map_http_request_error(rv, HTTP_BAD_REQUEST);
}
/* Is this flush really needed? */
apr_file_flush(script_out);
apr_file_close(script_out);
AP_DEBUG_ASSERT(script_in != NULL);
#if APR_FILES_AS_SOCKETS
b = cgi_bucket_create(r, dc->timeout, script_in, script_err, c->bucket_alloc);
if (b == NULL)
return HTTP_INTERNAL_SERVER_ERROR;
#else
b = apr_bucket_pipe_create(script_in, c->bucket_alloc);
#endif
APR_BRIGADE_INSERT_TAIL(bb, b);
b = apr_bucket_eos_create(c->bucket_alloc);
APR_BRIGADE_INSERT_TAIL(bb, b);
return cgi_handle_response(r, nph, bb, timeout, conf, dbuf, script_err);
}
/*============================================================================
*============================================================================
* This is the beginning of the cgi filter code moved from mod_include. This
* is the code required to handle the "exec" SSI directive.
*============================================================================
*============================================================================*/
static apr_status_t include_cgi(include_ctx_t *ctx, ap_filter_t *f,
apr_bucket_brigade *bb, char *s)
{
request_rec *r = f->r;
request_rec *rr = ap_sub_req_lookup_uri(s, r, f->next);
int rr_status;
if (rr->status != HTTP_OK) {
ap_destroy_sub_req(rr);
return APR_EGENERAL;
}
/* No hardwired path info or query allowed */
if ((rr->path_info && rr->path_info[0]) || rr->args) {
ap_destroy_sub_req(rr);
return APR_EGENERAL;
}
if (rr->finfo.filetype != APR_REG) {
ap_destroy_sub_req(rr);
return APR_EGENERAL;
}
/* Script gets parameters of the *document*, for back compatibility */
rr->path_info = r->path_info; /* hard to get right; see mod_cgi.c */
rr->args = r->args;
/* Force sub_req to be treated as a CGI request, even if ordinary
* typing rules would have called it something else.
*/
ap_set_content_type_ex(rr, CGI_MAGIC_TYPE, 1);
/* Run it. */
rr_status = ap_run_sub_req(rr);
if (ap_is_HTTP_REDIRECT(rr_status)) {
const char *location = apr_table_get(rr->headers_out, "Location");
if (location) {
char *buffer;
location = ap_escape_html(rr->pool, location);
buffer = apr_pstrcat(ctx->pool, "<a href=\"", location, "\">",
location, "</a>", NULL);
APR_BRIGADE_INSERT_TAIL(bb, apr_bucket_pool_create(buffer,
strlen(buffer), ctx->pool,
f->c->bucket_alloc));
}
}
ap_destroy_sub_req(rr);
return APR_SUCCESS;
}
static apr_status_t include_cmd(include_ctx_t *ctx, ap_filter_t *f,
apr_bucket_brigade *bb, const char *command)
{
cgi_exec_info_t e_info;
const char **argv;
apr_file_t *script_out = NULL, *script_in = NULL, *script_err = NULL;
apr_status_t rv;
request_rec *r = f->r;
add_ssi_vars(r);
e_info.process_cgi = 0;
e_info.cmd_type = APR_SHELLCMD;
e_info.detached = 0;
e_info.in_pipe = APR_NO_PIPE;
e_info.out_pipe = APR_FULL_BLOCK;
e_info.err_pipe = APR_NO_PIPE;
e_info.prog_type = RUN_AS_SSI;
e_info.bb = &bb;
e_info.ctx = ctx;
e_info.next = f->next;
e_info.addrspace = 0;
if ((rv = cgi_build_command(&command, &argv, r, r->pool,
&e_info)) != APR_SUCCESS) {
ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, APLOGNO(01226)
"don't know how to spawn cmd child process: %s",
r->filename);
return rv;
}
/* run the script in its own process */
if ((rv = run_cgi_child(&script_out, &script_in, &script_err,
command, argv, r, r->pool,
&e_info)) != APR_SUCCESS) {
ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, APLOGNO(01227)
"couldn't spawn child process: %s", r->filename);
return rv;
}
APR_BRIGADE_INSERT_TAIL(bb, apr_bucket_pipe_create(script_in,
f->c->bucket_alloc));
ctx->flush_now = 1;
/* We can't close the pipe here, because we may return before the
* full CGI has been sent to the network. That's okay though,
* because we can rely on the pool to close the pipe for us.
*/
return APR_SUCCESS;
}
static int cgi_post_config(apr_pool_t *p, apr_pool_t *plog,
apr_pool_t *ptemp, server_rec *s)
{
/* This is the means by which unusual (non-unix) os's may find alternate
* means to run a given command (e.g. shebang/registry parsing on Win32)
*/
cgi_build_command = APR_RETRIEVE_OPTIONAL_FN(ap_cgi_build_command);
if (!cgi_build_command) {
cgi_build_command = default_build_command;
}
return OK;
}
static void register_hooks(apr_pool_t *p)
{
static const char * const aszPre[] = { "mod_include.c", NULL };
ap_hook_handler(cgi_handler, NULL, NULL, APR_HOOK_MIDDLE);
ap_hook_post_config(cgi_post_config, aszPre, NULL, APR_HOOK_REALLY_FIRST);
ap_hook_optional_fn_retrieve(cgi_optfns_retrieve, NULL, NULL, APR_HOOK_MIDDLE);
}
AP_DECLARE_MODULE(cgi) =
{
STANDARD20_MODULE_STUFF,
create_cgi_dirconf, /* dir config creater */
NULL, /* dir merger --- default is to override */
create_cgi_config, /* server config */
merge_cgi_config, /* merge server config */
cgi_cmds, /* command apr_table_t */
register_hooks /* register hooks */
};
View git blame Copy permalink