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-rw-r--r--modules/generators/mod_cgid.c1300
1 files changed, 0 insertions, 1300 deletions
diff --git a/modules/generators/mod_cgid.c b/modules/generators/mod_cgid.c
deleted file mode 100644
index cbb09d3525..0000000000
--- a/modules/generators/mod_cgid.c
+++ /dev/null
@@ -1,1300 +0,0 @@
-/* ====================================================================
- * The Apache Software License, Version 1.1
- *
- * Copyright (c) 2000-2001 The Apache Software Foundation. All rights
- * reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. The end-user documentation included with the redistribution,
- * if any, must include the following acknowledgment:
- * "This product includes software developed by the
- * Apache Software Foundation (http://www.apache.org/)."
- * Alternately, this acknowledgment may appear in the software itself,
- * if and wherever such third-party acknowledgments normally appear.
- *
- * 4. The names "Apache" and "Apache Software Foundation" must
- * not be used to endorse or promote products derived from this
- * software without prior written permission. For written
- * permission, please contact apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache",
- * nor may "Apache" appear in their name, without prior written
- * permission of the Apache Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * ====================================================================
- *
- * This software consists of voluntary contributions made by many
- * individuals on behalf of the Apache Software Foundation. For more
- * information on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- *
- * Portions of this software are based upon public domain software
- * originally written at the National Center for Supercomputing Applications,
- * University of Illinois, Urbana-Champaign.
- */
-
-/*
- * http_script: keeps all script-related ramblings together.
- *
- * Compliant to cgi/1.1 spec
- *
- * Adapted by rst from original NCSA code by Rob McCool
- *
- * Apache adds some new env vars; REDIRECT_URL and REDIRECT_QUERY_STRING for
- * custom error responses, and DOCUMENT_ROOT because we found it useful.
- * It also adds SERVER_ADMIN - useful for scripts to know who to mail when
- * they fail.
- */
-
-#include "apr_lib.h"
-#include "apr_strings.h"
-#include "apr_general.h"
-#include "apr_file_io.h"
-#include "apr_portable.h"
-#include "apr_buckets.h"
-#include "apr_optional.h"
-#include "apr_signal.h"
-
-#define APR_WANT_STRFUNC
-#include "apr_want.h"
-
-#if APR_HAVE_SYS_SOCKET_H
-#include <sys/socket.h>
-#endif
-#if APR_HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#if APR_HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-
-#define CORE_PRIVATE
-
-#include "util_filter.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 "util_script.h"
-#include "ap_mpm.h"
-#include "unixd.h"
-#include "mod_suexec.h"
-#include "../filters/mod_include.h"
-
-#include "mod_core.h"
-
-
-/* ### should be tossed in favor of APR */
-#include <sys/stat.h>
-#include <sys/un.h> /* for sockaddr_un */
-
-
-module AP_MODULE_DECLARE_DATA cgid_module;
-
-static void cgid_init(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp, server_rec *main_server);
-static int handle_exec(include_ctx_t *ctx, apr_bucket_brigade **bb, request_rec *r,
- ap_filter_t *f, apr_bucket *head_ptr, apr_bucket **inserted_head);
-
-static APR_OPTIONAL_FN_TYPE(ap_register_include_handler) *cgid_pfn_reg_with_ssi;
-static APR_OPTIONAL_FN_TYPE(ap_ssi_get_tag_and_value) *cgid_pfn_gtv;
-static APR_OPTIONAL_FN_TYPE(ap_ssi_parse_string) *cgid_pfn_ps;
-
-static apr_pool_t *pcgi;
-static int total_modules = 0;
-
-/* KLUDGE --- for back-combatibility, we don't have to check Execcgid
- * 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
-#define DEFAULT_SOCKET "logs/cgisock"
-
-#define SHELL_PATH "/bin/sh"
-
-#define CGI_REQ 1
-#define SSI_REQ 2
-
-/* DEFAULT_CGID_LISTENBACKLOG controls the max depth on the unix socket's
- * pending connection queue. If a bunch of cgi requests arrive at about
- * the same time, connections from httpd threads/processes will back up
- * in the queue while the cgid process slowly forks off a child to process
- * each connection on the unix socket. If the queue is too short, the
- * httpd process will get ECONNREFUSED when trying to connect.
- */
-#ifndef DEFAULT_CGID_LISTENBACKLOG
-#define DEFAULT_CGID_LISTENBACKLOG 100
-#endif
-
-typedef struct {
- const char *sockname;
- const char *logname;
- long logbytes;
- int bufbytes;
-} cgid_server_conf;
-
-/* If a request includes query info in the URL (stuff after "?"), and
- * the query info does not contain "=" (indicative of a FORM submission),
- * then this routine is called to create the argument list to be passed
- * to the CGI script. When suexec is enabled, the suexec path, user, and
- * group are the first three arguments to be passed; if not, all three
- * must be NULL. The query info is split into separate arguments, where
- * "+" is the separator between keyword arguments.
- *
- * XXXX: note that the WIN32 code uses one of the suexec strings
- * to pass an interpreter name. Remember this if changing the way they
- * are handled in create_argv.
- *
- */
-static char **create_argv(apr_pool_t *p, char *path, char *user, char *group,
- char *av0, const char *args)
-{
- int x, numwords;
- char **av;
- char *w;
- int idx = 0;
-
- /* count the number of keywords */
-
- for (x = 0, numwords = 1; args[x]; x++) {
- if (args[x] == '+') {
- ++numwords;
- }
- }
-
- if (numwords > APACHE_ARG_MAX - 5) {
- numwords = APACHE_ARG_MAX - 5; /* Truncate args to prevent overrun */
- }
- av = (char **) apr_pcalloc(p, (numwords + 5) * sizeof(char *));
-
- if (path) {
- av[idx++] = path;
- }
- if (user) {
- av[idx++] = user;
- }
- if (group) {
- av[idx++] = group;
- }
-
- av[idx++] = apr_pstrdup(p, av0);
-
- for (x = 1; x <= numwords; x++) {
- w = ap_getword_nulls(p, &args, '+');
- if (strcmp(w, "")) {
- ap_unescape_url(w);
- av[idx++] = ap_escape_shell_cmd(p, w);
- }
- }
- av[idx] = NULL;
- return av;
-}
-
-#if APR_HAS_OTHER_CHILD
-static void cgid_maint(int reason, void *data, apr_wait_t status)
-{
- pid_t *sd = data;
- switch (reason) {
- case APR_OC_REASON_DEATH:
- case APR_OC_REASON_LOST:
- /* stop gap to make sure everything else works. In the end,
- * we'll just restart the cgid server. */
- apr_pool_destroy(pcgi);
- kill(getpid(), SIGWINCH); /* yes, to ourself */
- break;
- case APR_OC_REASON_RESTART:
- apr_proc_other_child_unregister(data);
- break;
- case APR_OC_REASON_UNREGISTER:
- apr_pool_destroy(pcgi);
- kill(*sd, SIGHUP);
- break;
- }
-}
-#endif
-
-static void get_req(int fd, request_rec *r, char **argv0, char ***env, int *req_type)
-{
- int i, len, j;
- unsigned char *data;
- char **environ;
- core_dir_config *temp_core;
- void **dconf;
- module *suexec_mod = ap_find_linked_module("mod_suexec.c");
-
- r->server = apr_pcalloc(r->pool, sizeof(server_rec));
-
- read(fd, req_type, sizeof(int));
- read(fd, &j, sizeof(int));
- read(fd, &len, sizeof(int));
- data = apr_pcalloc(r->pool, len + 1); /* get a cleared byte for final '\0' */
- i = read(fd, data, len);
-
- r->filename = ap_getword(r->pool, (const char **)&data, '\n');
- *argv0 = ap_getword(r->pool, (const char **)&data, '\n');
-
- r->uri = ap_getword(r->pool, (const char **)&data, '\n');
-
- environ = apr_pcalloc(r->pool, (j + 2) *sizeof(char *));
- i = 0;
- for (i = 0; i < j; i++) {
- environ[i] = ap_getword(r->pool, (const char **)&data, '\n');
- }
- *env = environ;
- r->args = ap_getword(r->pool, (const char **)&data, '\n');
-
- read(fd, &i, sizeof(int));
-
- /* add 1, so that if i == 0, we still malloc something. */
-
- dconf = (void **) apr_pcalloc(r->pool, sizeof(void *) * (total_modules + DYNAMIC_MODULE_LIMIT));
-
- temp_core = (core_dir_config *)apr_palloc(r->pool, sizeof(core_module));
-
- dconf[i] = (void *)temp_core;
-
- if (suexec_mod) {
- suexec_config_t *suexec_cfg = apr_pcalloc(r->pool, sizeof(*suexec_cfg));
-
- read(fd, &i, sizeof(int));
- read(fd, &suexec_cfg->ugid.uid, sizeof(uid_t));
- read(fd, &suexec_cfg->ugid.gid, sizeof(gid_t));
- read(fd, &suexec_cfg->active, sizeof(int));
- dconf[i] = (void *)suexec_cfg;
- }
-
- r->per_dir_config = (ap_conf_vector_t *)dconf;
-#if 0
-#ifdef RLIMIT_CPU
- read(fd, &j, sizeof(int));
- if (j) {
- temp_core->limit_cpu = (struct rlimit *)apr_palloc (sizeof(struct rlimit));
- read(fd, temp_core->limit_cpu, sizeof(struct rlimit));
- }
- else {
- temp_core->limit_cpu = NULL;
- }
-#endif
-
-#if defined (RLIMIT_DATA) || defined(RLIMIT_VMEM) || defined(RLIMIT_AS)
- read(fd, &j, sizeof(int));
- if (j) {
- temp_core->limit_mem = (struct rlimit *)apr_palloc(r->pool, sizeof(struct rlimit));
- read(fd, temp_core->limit_mem, sizeof(struct rlimit));
- }
- else {
- temp_core->limit_mem = NULL;
- }
-#endif
-
-#ifdef RLIMIT_NPROC
- read(fd, &j, sizeof(int));
- if (j) {
- temp_core->limit_nproc = (struct rlimit *)apr_palloc(r->pool, sizeof(struct rlimit));
- read(fd, temp_core->limit_nproc, sizeof(struct rlimit));
- }
- else {
- temp_core->limit_nproc = NULL;
- }
-#endif
-#endif
- /* For right now, just make the notes table. At some point we will need
- * to actually fill this out, but for now we just don't want suexec to
- * seg fault.
- */
- r->notes = apr_table_make(r->pool, 1);
-}
-
-
-
-static void send_req(int fd, request_rec *r, char *argv0, char **env, int req_type)
-{
- int len, r_type = req_type;
- int i = 0;
- char *data;
- module *suexec_mod = ap_find_linked_module("mod_suexec.c");
-
- data = apr_pstrcat(r->pool, r->filename, "\n", argv0, "\n", r->uri, "\n",
- NULL);
-
- for (i =0; env[i]; i++) {
- continue;
- }
-
- /* Write the request type (SSI "exec cmd" or cgi). */
- if (write(fd, &r_type, sizeof(int)) < 0) {
- ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
- "write to cgi daemon process");
- }
-
- /* Write the number of entries in the environment. */
- if (write(fd, &i, sizeof(int)) < 0) {
- ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
- "write to cgi daemon process");
- }
-
- for (i = 0; env[i]; i++) {
- data = apr_pstrcat(r->pool, data, env[i], "\n", NULL);
- }
- data = apr_pstrcat(r->pool, data, r->args, NULL);
- len = strlen(data);
- /* Write the length of the concatenated env string. */
- if (write(fd, &len, sizeof(int)) < 0) {
- ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
- "write to cgi daemon process");
- }
- /* Write the concatted env string. */
- if (write(fd, data, len) < 0) {
- ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
- "write to cgi daemon process");
- }
- /* Write module_index id value. */
- if (write(fd, &core_module.module_index, sizeof(int)) < 0) {
- ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
- "write to cgi daemon process");
- }
- if (suexec_mod) {
- suexec_config_t *suexec_cfg = ap_get_module_config(r->per_dir_config,
- suexec_mod);
-
- write(fd, &suexec_mod->module_index, sizeof(int));
- write(fd, &suexec_cfg->ugid.uid, sizeof(uid_t));
- write(fd, &suexec_cfg->ugid.gid, sizeof(gid_t));
- write(fd, &suexec_cfg->active, sizeof(int));
- }
-
-#if 0
-#ifdef RLIMIT_CPU
- if (conf->limit_cpu) {
- len = 1;
- write(fd, &len, sizeof(int));
- write(fd, conf->limit_cpu, sizeof(struct rlimit));
- }
- else {
- len = 0;
- write(fd, &len, sizeof(int));
- }
-#endif
-
-#if defined(RLIMIT_DATA) || defined(RLIMIT_VMEM) || defined(RLIMIT_AS)
- if (conf->limit_mem) {
- len = 1;
- write(fd, &len, sizeof(int));
- write(fd, conf->limit_mem, sizeof(struct rlimit));
- }
- else {
- len = 0;
- write(fd, &len, sizeof(int));
- }
-#endif
-
-#ifdef RLIMIT_NPROC
- if (conf->limit_nproc) {
- len = 1;
- write(fd, &len, sizeof(int));
- write(fd, conf->limit_nproc, sizeof(struct rlimit));
- }
- else {
- len = 0;
- write(fd, &len, sizeof(int));
- }
-#endif
-#endif
-}
-
-static int cgid_server(void *data)
-{
- struct sockaddr_un unix_addr;
- int sd, sd2, rc, req_type;
- mode_t omask;
- apr_socklen_t len;
- apr_pool_t *ptrans;
- server_rec *main_server = data;
- cgid_server_conf *sconf = ap_get_module_config(main_server->module_config,
- &cgid_module);
-
- apr_pool_create(&ptrans, pcgi);
-
- apr_signal(SIGCHLD, SIG_IGN);
- if (unlink(sconf->sockname) < 0 && errno != ENOENT) {
- ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server,
- "Couldn't unlink unix domain socket %s",
- sconf->sockname);
- /* just a warning; don't bail out */
- }
-
- if ((sd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
- ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server,
- "Couldn't create unix domain socket");
- return errno;
- }
-
- memset(&unix_addr, 0, sizeof(unix_addr));
- unix_addr.sun_family = AF_UNIX;
- strcpy(unix_addr.sun_path, sconf->sockname);
-
- omask = umask(0077); /* so that only Apache can use socket */
- rc = bind(sd, (struct sockaddr *)&unix_addr, sizeof(unix_addr));
- umask(omask); /* can't fail, so can't clobber errno */
- if (rc < 0) {
- ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server,
- "Couldn't bind unix domain socket %s",
- sconf->sockname);
- return errno;
- }
-
- if (listen(sd, DEFAULT_CGID_LISTENBACKLOG) < 0) {
- ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server,
- "Couldn't listen on unix domain socket");
- return errno;
- }
-
- if (!geteuid()) {
- if (chown(sconf->sockname, unixd_config.user_id, -1) < 0) {
- ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server,
- "Couldn't change owner of unix domain socket %s",
- sconf->sockname);
- return errno;
- }
- }
-
- unixd_setup_child(); /* if running as root, switch to configured user/group */
- while (1) {
- int errfileno = STDERR_FILENO;
- char *argv0;
- char **env;
- const char * const *argv;
- apr_int32_t in_pipe = APR_CHILD_BLOCK;
- apr_int32_t out_pipe = APR_CHILD_BLOCK;
- apr_int32_t err_pipe = APR_CHILD_BLOCK;
- apr_cmdtype_e cmd_type = APR_PROGRAM;
- request_rec *r;
- apr_procattr_t *procattr = NULL;
- apr_proc_t *procnew = NULL;
- apr_file_t *inout;
-
- apr_pool_clear(ptrans);
-
- len = sizeof(unix_addr);
- sd2 = accept(sd, (struct sockaddr *)&unix_addr, &len);
- if (sd2 < 0) {
- if (errno != EINTR) {
- ap_log_error(APLOG_MARK, APLOG_ERR, errno,
- (server_rec *)data,
- "Error accepting on cgid socket.");
- }
- continue;
- }
-
- r = apr_pcalloc(ptrans, sizeof(request_rec));
- procnew = apr_pcalloc(ptrans, sizeof(*procnew));
- r->pool = ptrans;
- get_req(sd2, r, &argv0, &env, &req_type);
- apr_os_file_put(&r->server->error_log, &errfileno, r->pool);
- apr_os_file_put(&inout, &sd2, r->pool);
-
- if (req_type == SSI_REQ) {
- in_pipe = APR_NO_PIPE;
- out_pipe = APR_FULL_BLOCK;
- err_pipe = APR_NO_PIPE;
- cmd_type = APR_SHELLCMD;
- }
-
- if (((rc = apr_procattr_create(&procattr, ptrans)) != APR_SUCCESS) ||
- ((req_type == CGI_REQ) &&
- (((rc = apr_procattr_io_set(procattr,
- in_pipe,
- out_pipe,
- err_pipe)) != APR_SUCCESS) ||
- /* XXX apr_procattr_child_*_set() is creating an unnecessary
- * pipe between this process and the child being created...
- * It is cleaned up with the temporary pool for this request.
- */
- ((rc = apr_procattr_child_err_set(procattr, r->server->error_log, NULL)) != APR_SUCCESS) ||
- ((rc = apr_procattr_child_in_set(procattr, inout, NULL)) != APR_SUCCESS))) ||
- ((rc = apr_procattr_child_out_set(procattr, inout, NULL)) != APR_SUCCESS) ||
- ((rc = apr_procattr_dir_set(procattr,
- ap_make_dirstr_parent(r->pool, r->filename))) != APR_SUCCESS) ||
- ((rc = apr_procattr_cmdtype_set(procattr, cmd_type)) != APR_SUCCESS)) {
- /* Something bad happened, tell the world. */
- ap_log_rerror(APLOG_MARK, APLOG_ERR, rc, r,
- "couldn't set child process attributes: %s", r->filename);
- }
- else {
- argv = (const char * const *)create_argv(r->pool, NULL, NULL, NULL, argv0, r->args);
-
- /* We want to sd2 close for new CGI process too.
- * If it's remained open it'll make ap_pass_brigade() block
- * waiting for EOF if CGI forked something running long.
- * close(sd2) here should be okay, as CGI channel
- * is already dup()ed by apr_procattr_child_{in,out}_set()
- * above.
- */
- close(sd2);
-
- rc = ap_os_create_privileged_process(r, procnew, argv0, argv,
- (const char * const *)env,
- procattr, ptrans);
-
- if (rc != APR_SUCCESS) {
- /* Bad things happened. Everyone should have cleaned up. */
- ap_log_rerror(APLOG_MARK, APLOG_ERR, rc, r,
- "couldn't create child process: %d: %s", rc, r->filename);
- }
- }
- }
- return -1;
-}
-
-static void cgid_init(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp,
- server_rec *main_server)
-{
- pid_t pid;
- apr_proc_t *procnew;
- void *data;
- int first_time = 0;
- const char *userdata_key = "cgid_init";
- module **m;
-
- apr_pool_userdata_get(&data, userdata_key, main_server->process->pool);
- if (!data) {
- first_time = 1;
- apr_pool_userdata_set((const void *)1, userdata_key,
- apr_pool_cleanup_null, main_server->process->pool);
- }
-
- if (!first_time) {
- apr_pool_create(&pcgi, p);
-
- total_modules = 0;
- for (m = ap_preloaded_modules; *m != NULL; m++)
- total_modules++;
-
-
- if ((pid = fork()) < 0) {
- ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server,
- "Couldn't spawn cgid daemon process");
- }
- else if (pid == 0) {
- cgid_server(main_server);
- exit(-1);
- }
- procnew = apr_pcalloc(p, sizeof(*procnew));
- procnew->pid = pid;
- procnew->err = procnew->in = procnew->out = NULL;
- apr_pool_note_subprocess(p, procnew, kill_after_timeout);
-#if APR_HAS_OTHER_CHILD
- apr_proc_other_child_register(procnew, cgid_maint, &procnew->pid, NULL, p);
-#endif
-
- cgid_pfn_reg_with_ssi = APR_RETRIEVE_OPTIONAL_FN(ap_register_include_handler);
- cgid_pfn_gtv = APR_RETRIEVE_OPTIONAL_FN(ap_ssi_get_tag_and_value);
- cgid_pfn_ps = APR_RETRIEVE_OPTIONAL_FN(ap_ssi_parse_string);
-
- if ((cgid_pfn_reg_with_ssi) && (cgid_pfn_gtv) && (cgid_pfn_ps)) {
- /* Required by mod_include filter. This is how mod_cgid registers
- * with mod_include to provide processing of the exec directive.
- */
- cgid_pfn_reg_with_ssi("exec", handle_exec);
- }
- }
-}
-
-static void *create_cgid_config(apr_pool_t *p, server_rec *s)
-{
- cgid_server_conf *c =
- (cgid_server_conf *) apr_pcalloc(p, sizeof(cgid_server_conf));
-
- c->logname = NULL;
- c->logbytes = DEFAULT_LOGBYTES;
- c->bufbytes = DEFAULT_BUFBYTES;
- c->sockname = ap_server_root_relative(p, DEFAULT_SOCKET);
- return c;
-}
-
-static void *merge_cgid_config(apr_pool_t *p, void *basev, void *overridesv)
-{
- cgid_server_conf *base = (cgid_server_conf *) basev, *overrides = (cgid_server_conf *) overridesv;
-
- return overrides->logname ? overrides : base;
-}
-
-static const char *set_scriptlog(cmd_parms *cmd, void *dummy, const char *arg)
-{
- server_rec *s = cmd->server;
- cgid_server_conf *conf = ap_get_module_config(s->module_config,
- &cgid_module);
-
- conf->logname = arg;
- return NULL;
-}
-
-static const char *set_scriptlog_length(cmd_parms *cmd, void *dummy, const char *arg)
-{
- server_rec *s = cmd->server;
- cgid_server_conf *conf = ap_get_module_config(s->module_config,
- &cgid_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;
- cgid_server_conf *conf = ap_get_module_config(s->module_config,
- &cgid_module);
-
- conf->bufbytes = atoi(arg);
- return NULL;
-}
-
-static const char *set_script_socket(cmd_parms *cmd, void *dummy, const char *arg)
-{
- server_rec *s = cmd->server;
- cgid_server_conf *conf = ap_get_module_config(s->module_config,
- &cgid_module);
-
- conf->sockname = ap_server_root_relative(cmd->pool, arg);
- return NULL;
-}
-
-static const command_rec cgid_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("Scriptsock", set_script_socket, NULL, RSRC_CONF,
- "the name of the socket to use for communication with "
- "the cgi daemon."),
- {NULL}
-};
-
-static int log_scripterror(request_rec *r, cgid_server_conf * conf, int ret,
- apr_status_t rv, char *error)
-{
- apr_file_t *f = NULL;
- struct stat finfo;
- char time_str[APR_CTIME_LEN];
- int log_flags = rv ? APLOG_ERR : APLOG_NOERRNO | APLOG_ERR;
-
- ap_log_rerror(APLOG_MARK, log_flags, rv, r,
- "%s: %s", error, r->filename);
-
- if (!conf->logname ||
- ((stat(ap_server_root_relative(r->pool, conf->logname), &finfo) == 0)
- && (finfo.st_size > conf->logbytes)) ||
- (apr_file_open(&f, ap_server_root_relative(r->pool, conf->logname),
- APR_APPEND|APR_WRITE|APR_CREATE, APR_OS_DEFAULT, r->pool) != APR_SUCCESS)) {
- return ret;
- }
-
- /* "%% [Wed Jun 19 10:53:21 1996] GET /cgid-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/cgid-bin */
- apr_file_printf(f, "%%%% %d %s\n", ret, r->filename);
-
- apr_file_printf(f, "%%error\n%s\n", error);
-
- apr_file_close(f);
- return ret;
-}
-
-static int log_script(request_rec *r, cgid_server_conf * conf, int ret,
- char *dbuf, const char *sbuf, apr_file_t *script_in, apr_file_t *script_err)
-{
- apr_array_header_t *hdrs_arr = apr_table_elts(r->headers_in);
- apr_table_entry_t *hdrs = (apr_table_entry_t *) hdrs_arr->elts;
- char argsbuffer[HUGE_STRING_LEN];
- apr_file_t *f = NULL;
- int i;
- struct stat finfo;
- char time_str[APR_CTIME_LEN];
-
- if (!conf->logname ||
- ((stat(ap_server_root_relative(r->pool, conf->logname), &finfo) == 0)
- && (finfo.st_size > conf->logbytes)) ||
- (apr_file_open(&f, ap_server_root_relative(r->pool, conf->logname),
- APR_APPEND|APR_WRITE|APR_CREATE, APR_OS_DEFAULT, r->pool) != APR_SUCCESS)) {
- /* Soak up script output */
- while (apr_file_gets(argsbuffer, HUGE_STRING_LEN, script_in) == 0)
- continue;
- if (script_err) {
- while (apr_file_gets(argsbuffer, HUGE_STRING_LEN, script_err) == 0)
- continue;
- }
- return ret;
- }
-
- /* "%% [Wed Jun 19 10:53:21 1996] GET /cgid-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/cgid-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 = (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);
-
- if (apr_file_gets(argsbuffer, HUGE_STRING_LEN, script_in) == 0) {
- apr_file_puts("%stdout\n", f);
- apr_file_puts(argsbuffer, f);
- while (apr_file_gets(argsbuffer, HUGE_STRING_LEN, script_in) == 0)
- apr_file_puts(argsbuffer, f);
- apr_file_puts("\n", f);
- }
-
- if (script_err) {
- if (apr_file_gets(argsbuffer, HUGE_STRING_LEN, script_err) == 0) {
- apr_file_puts("%stderr\n", f);
- apr_file_puts(argsbuffer, f);
- while (apr_file_gets(argsbuffer, HUGE_STRING_LEN, script_err) == 0)
- apr_file_puts(argsbuffer, f);
- apr_file_puts("\n", f);
- }
- }
-
- apr_file_close(script_in);
- if (script_err) {
- apr_file_close(script_err);
- }
-
- apr_file_close(f);
- return ret;
-}
-
-
-
-/****************************************************************
- *
- * Actual cgid handling...
- */
-static int cgid_handler(request_rec *r)
-{
- int retval, nph, dbpos = 0;
- char *argv0, *dbuf = NULL;
- apr_bucket_brigade *bb;
- apr_bucket *b;
- char argsbuffer[HUGE_STRING_LEN];
- cgid_server_conf *conf;
- int is_included;
- int sd;
- char **env;
- struct sockaddr_un unix_addr;
- apr_file_t *tempsock;
- apr_size_t nbytes;
-
- if(strcmp(r->handler,CGI_MAGIC_TYPE) && strcmp(r->handler,"cgi-script"))
- return DECLINED;
-
- if (r->method_number == M_OPTIONS) {
- /* 99 out of 100 cgid scripts, this is all they support */
- r->allowed |= (1 << M_GET);
- r->allowed |= (1 << M_POST);
- return DECLINED;
- }
-
- conf = ap_get_module_config(r->server->module_config, &cgid_module);
- is_included = !strcmp(r->protocol, "INCLUDED");
-
- if ((argv0 = strrchr(r->filename, '/')) != NULL)
- argv0++;
- else
- argv0 = r->filename;
-
- nph = !(strncmp(argv0, "nph-", 4));
-
- if ((argv0 = strrchr(r->filename, '/')) != NULL)
- argv0++;
- else
- argv0 = r->filename;
-
- if (!(ap_allow_options(r) & OPT_EXECCGI) && !is_scriptaliased(r))
- return log_scripterror(r, conf, HTTP_FORBIDDEN, 0,
- "Options ExecCGI is off in this directory");
- if (nph && is_included)
- return log_scripterror(r, conf, HTTP_FORBIDDEN, 0,
- "attempt to include NPH CGI script");
-
-#if defined(OS2) || defined(WIN32)
-#error mod_cgid does not work on this platform. If you teach it to, look
-#error at mod_cgi.c for required code in this path.
-#else
- if (r->finfo.filetype == 0)
- return log_scripterror(r, conf, HTTP_NOT_FOUND, 0,
- "script not found or unable to stat");
-#endif
- if (r->finfo.filetype == APR_DIR)
- return log_scripterror(r, conf, HTTP_FORBIDDEN, 0,
- "attempt to invoke directory as script");
-/*
- if (!ap_suexec_enabled) {
- if (!ap_can_exec(&r->finfo))
- return log_scripterror(r, conf, HTTP_FORBIDDEN, 0,
- "file permissions deny server execution");
- }
-*/
- ap_add_common_vars(r);
- ap_add_cgi_vars(r);
- env = ap_create_environment(r->pool, r->subprocess_env);
-
- if ((sd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
- return log_scripterror(r, conf, HTTP_INTERNAL_SERVER_ERROR, errno,
- "unable to create socket to cgi daemon");
- }
- memset(&unix_addr, 0, sizeof(unix_addr));
- unix_addr.sun_family = AF_UNIX;
- strcpy(unix_addr.sun_path, conf->sockname);
-
- if (connect(sd, (struct sockaddr *)&unix_addr, sizeof(unix_addr)) < 0) {
- return log_scripterror(r, conf, HTTP_INTERNAL_SERVER_ERROR, errno,
- "unable to connect to cgi daemon");
- }
-
- send_req(sd, r, argv0, env, CGI_REQ);
-
- /* We are putting the tempsock variable into a file so that we can use
- * a pipe bucket to send the data to the client.
- */
- apr_os_file_put(&tempsock, &sd, r->pool);
-
- if ((retval = ap_setup_client_block(r, REQUEST_CHUNKED_ERROR)))
- return retval;
-
- if ((argv0 = strrchr(r->filename, '/')) != NULL)
- argv0++;
- else
- argv0 = r->filename;
-
- /* 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;
-
- if (conf->logname) {
- dbuf = apr_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;
- }
- nbytes = len_read;
- apr_file_write(tempsock, argsbuffer, &nbytes);
- if (nbytes < len_read) {
- /* silly script stopped reading, soak up remaining message */
- while (ap_get_client_block(r, argsbuffer, HUGE_STRING_LEN) > 0) {
- /* dump it */
- }
- break;
- }
- }
- }
- /* we're done writing, or maybe we didn't write at all;
- * force EOF on child's stdin so that the cgi detects end (or
- * absence) of data
- */
- shutdown(sd, 1);
-
- /* Handle script return... */
- if (!nph) {
- const char *location;
- char sbuf[MAX_STRING_LEN];
- int ret;
-
- if ((ret = ap_scan_script_header_err(r, tempsock, sbuf))) {
- return log_script(r, conf, ret, dbuf, sbuf, tempsock, NULL);
- }
-
- location = apr_table_get(r->headers_out, "Location");
-
- if (location && location[0] == '/' && r->status == 200) {
-
- /* Soak up all the script output */
- while (apr_file_gets(argsbuffer, HUGE_STRING_LEN, tempsock) > 0) {
- continue;
- }
- /* This redirect needs to be a GET no matter what the original
- * method was.
- */
- r->method = apr_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.
- */
- apr_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 HTTP_MOVED_TEMPORARILY;
- }
-
- if (!r->header_only) {
- bb = apr_brigade_create(r->pool);
- b = apr_bucket_pipe_create(tempsock);
- APR_BRIGADE_INSERT_TAIL(bb, b);
- b = apr_bucket_eos_create();
- APR_BRIGADE_INSERT_TAIL(bb, b);
- ap_pass_brigade(r->output_filters, bb);
- }
- }
-
- if (nph) {
- bb = apr_brigade_create(r->pool);
- b = apr_bucket_pipe_create(tempsock);
- APR_BRIGADE_INSERT_TAIL(bb, b);
- b = apr_bucket_eos_create();
- APR_BRIGADE_INSERT_TAIL(bb, b);
- ap_pass_brigade(r->output_filters, bb);
- }
-
- apr_file_close(tempsock);
-
- return OK; /* NOT r->status, even if it has changed. */
-}
-
-
-
-
-/*============================================================================
- *============================================================================
- * 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 int include_cgi(char *s, request_rec *r, ap_filter_t *next,
- apr_bucket *head_ptr, apr_bucket **inserted_head)
-{
- request_rec *rr = ap_sub_req_lookup_uri(s, r, next);
- int rr_status;
- apr_bucket *tmp_buck, *tmp2_buck;
-
- if (rr->status != HTTP_OK) {
- return -1;
- }
-
- /* No hardwired path info or query allowed */
-
- if ((rr->path_info && rr->path_info[0]) || rr->args) {
- return -1;
- }
- if (rr->finfo.protection == 0) {
- return -1;
- }
-
- /* 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.
- */
-
- rr->content_type = CGI_MAGIC_TYPE;
-
- /* Run it. */
-
- rr_status = ap_run_sub_req(rr);
- if (ap_is_HTTP_REDIRECT(rr_status)) {
- apr_size_t len_loc, h_wrt;
- const char *location = apr_table_get(rr->headers_out, "Location");
-
- location = ap_escape_html(rr->pool, location);
- len_loc = strlen(location);
-
- tmp_buck = apr_bucket_immortal_create("<A HREF=\"", sizeof("<A HREF=\""));
- APR_BUCKET_INSERT_BEFORE(head_ptr, tmp_buck);
- tmp2_buck = apr_bucket_heap_create(location, len_loc, 1, &h_wrt);
- APR_BUCKET_INSERT_BEFORE(head_ptr, tmp2_buck);
- tmp2_buck = apr_bucket_immortal_create("\">", sizeof("\">"));
- APR_BUCKET_INSERT_BEFORE(head_ptr, tmp2_buck);
- tmp2_buck = apr_bucket_heap_create(location, len_loc, 1, &h_wrt);
- APR_BUCKET_INSERT_BEFORE(head_ptr, tmp2_buck);
- tmp2_buck = apr_bucket_immortal_create("</A>", sizeof("</A>"));
- APR_BUCKET_INSERT_BEFORE(head_ptr, tmp2_buck);
-
- if (*inserted_head == NULL) {
- *inserted_head = tmp_buck;
- }
- }
-
- ap_destroy_sub_req(rr);
-
- return 0;
-}
-
-
-/* This is the special environment used for running the "exec cmd="
- * variety of SSI directives.
- */
-static void add_ssi_vars(request_rec *r, ap_filter_t *next)
-{
- 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, next);
- if (pa_req->filename) {
- apr_table_setn(e, "PATH_TRANSLATED",
- apr_pstrcat(r->pool, pa_req->filename, pa_req->path_info, NULL));
- }
- }
-
- 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 int include_cmd(include_ctx_t *ctx, apr_bucket_brigade **bb, char *command,
- request_rec *r, ap_filter_t *f)
-{
- char **env;
- const char *location;
- int sd;
- int retval;
- apr_bucket_brigade *bcgi;
- apr_bucket *b;
- struct sockaddr_un unix_addr;
- apr_file_t *tempsock = NULL;
- cgid_server_conf *conf = ap_get_module_config(r->server->module_config,
- &cgid_module);
-
- add_ssi_vars(r, f->next);
- env = ap_create_environment(r->pool, r->subprocess_env);
-
- if ((sd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
- return log_scripterror(r, conf, HTTP_INTERNAL_SERVER_ERROR, 0,
- "unable to create socket to cgi daemon");
- }
-
- memset(&unix_addr, 0, sizeof(unix_addr));
- unix_addr.sun_family = AF_UNIX;
- strcpy(unix_addr.sun_path, conf->sockname);
-
- if (connect(sd, (struct sockaddr *)&unix_addr, sizeof(unix_addr)) < 0) {
- return log_scripterror(r, conf, HTTP_INTERNAL_SERVER_ERROR, 0,
- "unable to connect to cgi daemon");
- }
-
- SPLIT_AND_PASS_PRETAG_BUCKETS(*bb, ctx, f->next);
-
- send_req(sd, r, command, env, SSI_REQ);
-
- /* We are putting the tempsock variable into a file so that we can use
- * a pipe bucket to send the data to the client.
- */
- apr_os_file_put(&tempsock, &sd, r->pool);
-
- if ((retval = ap_setup_client_block(r, REQUEST_CHUNKED_ERROR)))
- return retval;
-
- location = apr_table_get(r->headers_out, "Location");
-
- if (location && location[0] == '/' && r->status == 200) {
- char argsbuffer[HUGE_STRING_LEN];
-
- /* Soak up all the script output */
- while (apr_file_gets(argsbuffer, HUGE_STRING_LEN, tempsock) > 0) {
- continue;
- }
- /* This redirect needs to be a GET no matter what the original
- * method was.
- */
- r->method = apr_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.
- */
- apr_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 HTTP_MOVED_TEMPORARILY;
- }
-
- if (!r->header_only) {
- bcgi = apr_brigade_create(r->pool);
- b = apr_bucket_pipe_create(tempsock);
- APR_BRIGADE_INSERT_TAIL(bcgi, b);
- ap_pass_brigade(f->next, bcgi);
- }
-
- return 0;
-}
-
-static int handle_exec(include_ctx_t *ctx, apr_bucket_brigade **bb, request_rec *r,
- ap_filter_t *f, apr_bucket *head_ptr, apr_bucket **inserted_head)
-{
- char *tag = NULL;
- char *tag_val = NULL;
- char *file = r->filename;
- apr_bucket *tmp_buck;
- char parsed_string[MAX_STRING_LEN];
-
- *inserted_head = NULL;
- if (ctx->flags & FLAG_PRINTING) {
- if (ctx->flags & FLAG_NO_EXEC) {
- ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, 0, r,
- "exec used but not allowed in %s", r->filename);
- CREATE_ERROR_BUCKET(ctx, tmp_buck, head_ptr, *inserted_head);
- }
- else {
- while (1) {
- cgid_pfn_gtv(ctx, &tag, &tag_val, 1);
- if (tag_val == NULL) {
- if (tag == NULL) {
- return (0);
- }
- else {
- return 1;
- }
- }
- if (!strcmp(tag, "cmd")) {
- cgid_pfn_ps(r, tag_val, parsed_string, sizeof(parsed_string), 1);
- if (include_cmd(ctx, bb, parsed_string, r, f) == -1) {
- ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, 0, r,
- "execution failure for parameter \"%s\" "
- "to tag exec in file %s", tag, r->filename);
- CREATE_ERROR_BUCKET(ctx, tmp_buck, head_ptr, *inserted_head);
- }
- /* just in case some stooge changed directories */
- }
- else if (!strcmp(tag, "cgi")) {
- cgid_pfn_ps(r, tag_val, parsed_string, sizeof(parsed_string), 0);
- SPLIT_AND_PASS_PRETAG_BUCKETS(*bb, ctx, f->next);
- if (include_cgi(parsed_string, r, f->next, head_ptr, inserted_head) == -1) {
- ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, 0, r,
- "invalid CGI ref \"%s\" in %s", tag_val, file);
- CREATE_ERROR_BUCKET(ctx, tmp_buck, head_ptr, *inserted_head);
- }
- }
- else {
- ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, 0, r,
- "unknown parameter \"%s\" to tag exec in %s", tag, file);
- CREATE_ERROR_BUCKET(ctx, tmp_buck, head_ptr, *inserted_head);
- }
- }
- }
- }
- return 0;
-}
-/*============================================================================
- *============================================================================
- * This is the end of the cgi filter code moved from mod_include.
- *============================================================================
- *============================================================================*/
-
-
-static void register_hook(apr_pool_t *p)
-{
- static const char * const aszPre[] = { "mod_include.c", NULL };
-
- ap_hook_post_config(cgid_init, aszPre, NULL, APR_HOOK_MIDDLE);
- ap_hook_handler(cgid_handler, NULL, NULL, APR_HOOK_MIDDLE);
-}
-
-module AP_MODULE_DECLARE_DATA cgid_module = {
- STANDARD20_MODULE_STUFF,
- NULL, /* dir config creater */
- NULL, /* dir merger --- default is to override */
- create_cgid_config, /* server config */
- merge_cgid_config, /* merge server config */
- cgid_cmds, /* command table */
- register_hook /* register_handlers */
-};
-