1 /* ====================================================================
2 * The Apache Software License, Version 1.1
4 * Copyright (c) 2000 The Apache Software Foundation. All rights
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the
19 * 3. The end-user documentation included with the redistribution,
20 * if any, must include the following acknowledgment:
21 * "This product includes software developed by the
22 * Apache Software Foundation (http://www.apache.org/)."
23 * Alternately, this acknowledgment may appear in the software itself,
24 * if and wherever such third-party acknowledgments normally appear.
26 * 4. The names "Apache" and "Apache Software Foundation" must
27 * not be used to endorse or promote products derived from this
28 * software without prior written permission. For written
29 * permission, please contact apache@apache.org.
31 * 5. Products derived from this software may not be called "Apache",
32 * nor may "Apache" appear in their name, without prior written
33 * permission of the Apache Software Foundation.
35 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
36 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
37 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
38 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
39 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
40 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
41 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
42 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
43 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
44 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
45 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
47 * ====================================================================
49 * This software consists of voluntary contributions made by many
50 * individuals on behalf of the Apache Software Foundation. For more
51 * information on the Apache Software Foundation, please see
52 * <http://www.apache.org/>.
54 * Portions of this software are based upon public domain software
55 * originally written at the National Center for Supercomputing Applications,
56 * University of Illinois, Urbana-Champaign.
60 * http_script: keeps all script-related ramblings together.
62 * Compliant to cgi/1.1 spec
64 * Adapted by rst from original NCSA code by Rob McCool
66 * Apache adds some new env vars; REDIRECT_URL and REDIRECT_QUERY_STRING for
67 * custom error responses, and DOCUMENT_ROOT because we found it useful.
68 * It also adds SERVER_ADMIN - useful for scripts to know who to mail when
77 #include "apr_strings.h"
78 #include "apr_general.h"
79 #include "apr_file_io.h"
80 #include "apr_portable.h"
82 #include "http_config.h"
83 #include "http_request.h"
84 #include "http_core.h"
85 #include "http_protocol.h"
86 #include "http_main.h"
88 #include "util_script.h"
89 #include "http_conf_globals.h"
92 #include "iol_socket.h"
95 #ifdef HAVE_SYS_SOCKET_H
96 #include <sys/socket.h>
101 #include <sys/un.h> /* for sockaddr_un */
102 #include <sys/types.h>
104 module MODULE_VAR_EXPORT cgid_module;
106 static void cgid_init(ap_pool_t *p, ap_pool_t *plog, ap_pool_t *ptemp, server_rec *main_server);
107 static int once_through = 0;
109 static ap_pool_t *pcgi;
111 /* KLUDGE --- for back-combatibility, we don't have to check Execcgid
112 * in ScriptAliased directories, which means we need to know if this
113 * request came through ScriptAlias or not... so the Alias module
114 * leaves a note for us.
117 static int is_scriptaliased(request_rec *r)
119 const char *t = ap_table_get(r->notes, "alias-forced-type");
120 return t && (!strcasecmp(t, "cgi-script"));
123 /* Configuration stuff */
125 #define DEFAULT_LOGBYTES 10385760
126 #define DEFAULT_BUFBYTES 1024
127 #define DEFAULT_SOCKET "logs/cgisock"
129 #define SHELL_PATH "/bin/sh"
131 /* DEFAULT_CGID_LISTENBACKLOG controls the max depth on the unix socket's
132 * pending connection queue. If a bunch of cgi requests arrive at about
133 * the same time, connections from httpd threads/processes will back up
134 * in the queue while the cgid process slowly forks off a child to process
135 * each connection on the unix socket. If the queue is too short, the
136 * httpd process will get ECONNREFUSED when trying to connect.
138 #ifndef DEFAULT_CGID_LISTENBACKLOG
139 #define DEFAULT_CGID_LISTENBACKLOG 100
143 const char *sockname;
152 /* If a request includes query info in the URL (stuff after "?"), and
153 * the query info does not contain "=" (indicative of a FORM submission),
154 * then this routine is called to create the argument list to be passed
155 * to the CGI script. When suexec is enabled, the suexec path, user, and
156 * group are the first three arguments to be passed; if not, all three
157 * must be NULL. The query info is split into separate arguments, where
158 * "+" is the separator between keyword arguments.
160 * XXXX: note that the WIN32 code uses one of the suexec strings
161 * to pass an interpreter name. Remember this if changing the way they
162 * are handled in create_argv.
165 static char **create_argv(ap_pool_t *p, char *path, char *user, char *group,
166 char *av0, const char *args)
173 /* count the number of keywords */
175 for (x = 0, numwords = 1; args[x]; x++) {
176 if (args[x] == '+') {
181 if (numwords > APACHE_ARG_MAX - 5) {
182 numwords = APACHE_ARG_MAX - 5; /* Truncate args to prevent overrun */
184 av = (char **) ap_palloc(p, (numwords + 5) * sizeof(char *));
198 for (x = 1; x <= numwords; x++) {
199 w = ap_getword_nulls(p, &args, '+');
201 av[idx++] = ap_escape_shell_cmd(p, w);
207 static int call_exec(request_rec *r, char *argv0, char **env, int shellcmd)
210 int errfileno = STDERR_FILENO;
211 /* the fd on r->server->error_log is closed, but we need somewhere to
212 * put the error messages from the log_* functions. So, we use stderr,
213 * since that is better than allowing errors to go unnoticed.
215 ap_put_os_file(&r->server->error_log, &errfileno, r->pool);
216 /* TODO: reimplement suexec */
218 if (ap_suexec_enabled
219 && ((r->server->server_uid != ap_user_id)
220 || (r->server->server_gid != ap_group_id)
221 || (!strncmp("/~", r->uri, 2)))) {
223 char *execuser, *grpname;
227 if (!strncmp("/~", r->uri, 2)) {
229 char *username = ap_pstrdup(r->pool, r->uri + 2);
230 char *pos = strchr(username, '/');
236 if ((pw = getpwnam(username)) == NULL) {
237 ap_log_rerror(APLOG_MARK, APLOG_ERR, r,
238 "getpwnam: invalid username %s", username);
241 execuser = ap_pstrcat(r->pool, "~", pw->pw_name, NULL);
242 user_gid = pw->pw_gid;
244 if ((gr = getgrgid(user_gid)) == NULL) {
245 if ((grpname = ap_palloc(r->pool, 16)) == NULL) {
249 ap_snprintf(grpname, 16, "%ld", (long) user_gid);
253 grpname = gr->gr_name;
257 if ((pw = getpwuid(r->server->server_uid)) == NULL) {
258 ap_log_rerror(APLOG_MARK, APLOG_ERR, r,
259 "getpwuid: invalid userid %ld",
260 (long) r->server->server_uid);
263 execuser = ap_pstrdup(r->pool, pw->pw_name);
265 if ((gr = getgrgid(r->server->server_gid)) == NULL) {
266 ap_log_rerror(APLOG_MARK, APLOG_ERR, r,
267 "getgrgid: invalid groupid %ld",
268 (long) r->server->server_gid);
271 grpname = gr->gr_name;
275 execle(SUEXEC_BIN, SUEXEC_BIN, execuser, grpname, argv0,
279 else if ((!r->args) || (!r->args[0]) || strchr(r->args, '=')) {
280 execle(SUEXEC_BIN, SUEXEC_BIN, execuser, grpname, argv0,
286 create_argv(r->pool, SUEXEC_BIN, execuser, grpname,
294 execle(SHELL_PATH, SHELL_PATH, "-c", argv0, NULL, env);
297 else if ((!r->args) || (!r->args[0]) || strchr(r->args, '=')) {
298 execle(r->filename, argv0, NULL, env);
303 create_argv(r->pool, NULL, NULL, NULL, argv0, r->args),
312 static void cgid_maint(int reason, void *data, ap_wait_t status)
314 #if APR_HAS_OTHER_CHILD
317 case APR_OC_REASON_DEATH:
318 case APR_OC_REASON_LOST:
319 /* stop gap to make sure everything else works. In the end,
320 * we'll just restart the cgid server. */
321 ap_destroy_pool(pcgi);
322 kill(getppid(), SIGWINCH);
324 case APR_OC_REASON_RESTART:
325 case APR_OC_REASON_UNREGISTER:
326 ap_destroy_pool(pcgi);
333 static void get_req(int fd, request_rec *r, char **filename, char **argv0, char ***env)
338 core_dir_config *temp_core;
341 r->server = ap_pcalloc(r->pool, sizeof(server_rec));
343 read(fd, &j, sizeof(int));
344 read(fd, &len, sizeof(int));
345 data = ap_pcalloc(r->pool, len + 1); /* get a cleared byte for final '\0' */
346 i = read(fd, data, len);
348 r->filename = ap_getword(r->pool, (const char **)&data, '\n');
349 *argv0 = ap_getword(r->pool, (const char **)&data, '\n');
351 r->uri = ap_getword(r->pool, (const char **)&data, '\n');
353 environ = ap_pcalloc(r->pool, (j + 2) *sizeof(char *));
355 for (i = 0; i < j; i++) {
356 environ[i] = ap_getword(r->pool, (const char **)&data, '\n');
359 r->args = ap_getword(r->pool, (const char **)&data, '\n');
361 read(fd, &r->server->server_uid, sizeof(uid_t));
362 read(fd, &r->server->server_gid, sizeof(gid_t));
364 read(fd, &i, sizeof(int));
366 /* add 1, so that if i == 0, we still malloc something. */
367 dconf = (void **)malloc(sizeof(void *) * i + 1);
369 temp_core = (core_dir_config *)malloc(sizeof(core_module));
372 read(fd, &j, sizeof(int));
374 temp_core->limit_cpu = (struct rlimit *)malloc (sizeof(struct rlimit));
375 read(fd, temp_core->limit_cpu, sizeof(struct rlimit));
378 temp_core->limit_cpu = NULL;
382 #if defined (RLIMIT_DATA) || defined(RLIMIT_VMEM) || defined(RLIMIT_AS)
383 read(fd, &j, sizeof(int));
385 temp_core->limit_mem = (struct rlimit *)malloc (sizeof(struct rlimit));
386 read(fd, temp_core->limit_mem, sizeof(struct rlimit));
389 temp_core->limit_mem = NULL;
394 read(fd, &j, sizeof(int));
396 temp_core->limit_nproc = (struct rlimit *)malloc (sizeof(struct rlimit));
397 read(fd, temp_core->limit_nproc, sizeof(struct rlimit));
400 temp_core->limit_nproc = NULL;
404 dconf[i] = (void *)temp_core;
405 r->per_dir_config = dconf;
410 static void send_req(int fd, request_rec *r, char *argv0, char **env)
416 data = ap_pstrcat(r->pool, r->filename, "\n", argv0, "\n", r->uri, "\n",
419 for (i =0; env[i]; i++) {
423 if (write(fd, &i, sizeof(int)) < 0) {
424 ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
425 "write to cgi daemon process");
428 for (i = 0; env[i]; i++) {
429 data = ap_pstrcat(r->pool, data, env[i], "\n", NULL);
431 data = ap_pstrcat(r->pool, data, r->args, NULL);
433 if (write(fd, &len, sizeof(int)) < 0) {
434 ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
435 "write to cgi daemon process");
437 if (write(fd, data, len) < 0) {
438 ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
439 "write to cgi daemon process");
441 if (write(fd, &r->server->server_uid, sizeof(uid_t)) < 0) {
442 ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
443 "write to cgi daemon process");
445 if (write(fd, &r->server->server_gid, sizeof(gid_t)) < 0) {
446 ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
447 "write to cgi daemon process");
449 if (write(fd, &core_module.module_index, sizeof(int)) < 0) {
450 ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
451 "write to cgi daemon process");
455 if (conf->limit_cpu) {
457 write(fd, &len, sizeof(int));
458 write(fd, conf->limit_cpu, sizeof(struct rlimit));
462 write(fd, &len, sizeof(int));
466 #if defined(RLIMIT_DATA) || defined(RLIMIT_VMEM) || defined(RLIMIT_AS)
467 if (conf->limit_mem) {
469 write(fd, &len, sizeof(int));
470 write(fd, conf->limit_mem, sizeof(struct rlimit));
474 write(fd, &len, sizeof(int));
479 if (conf->limit_nproc) {
481 write(fd, &len, sizeof(int));
482 write(fd, conf->limit_nproc, sizeof(struct rlimit));
486 write(fd, &len, sizeof(int));
492 static int cgid_server_child(int sd)
500 ap_create_pool(&p, pcgi);
501 r = ap_pcalloc(p, sizeof(request_rec));
503 dup2(sd, STDIN_FILENO);
504 dup2(sd, STDOUT_FILENO);
505 get_req(sd, r, &filename, &argv0, &env);
506 call_exec(r, argv0, env, 0);
507 exit(-1); /* We should NEVER get here */
510 static int cgid_server(void *data)
512 struct sockaddr_un unix_addr;
514 int sd, sd2, len, rc;
517 server_rec *main_server = data;
518 cgid_server_conf *sconf = (cgid_server_conf *)ap_get_module_config(
519 main_server->module_config, &cgid_module);
521 ap_signal(SIGCHLD, SIG_IGN);
522 if (unlink(sconf->sockname) < 0 &&
524 ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server,
525 "Couldn't unlink unix domain socket %s",
527 /* just a warning; don't bail out */
530 if ((sd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
531 ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server,
532 "Couldn't create unix domain socket");
536 memset(&unix_addr, 0, sizeof(unix_addr));
537 unix_addr.sun_family = AF_UNIX;
538 strcpy(unix_addr.sun_path, sconf->sockname);
540 omask = umask(0077); /* so that only Apache can use socket */
541 rc = bind(sd, (struct sockaddr *)&unix_addr, sizeof(unix_addr));
542 umask(omask); /* can't fail, so can't clobber errno */
544 ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server,
545 "Couldn't bind unix domain socket %s",
550 if (listen(sd, DEFAULT_CGID_LISTENBACKLOG) < 0) {
551 ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server,
552 "Couldn't listen on unix domain socket");
557 if (chown(sconf->sockname, unixd_config.user_id, -1) < 0) {
558 ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server,
559 "Couldn't change owner of unix domain socket %s",
565 unixd_setup_child(); /* if running as root, switch to configured user/group */
568 len = sizeof(unix_addr);
569 sd2 = accept(sd, (struct sockaddr *)&unix_addr, &len);
571 ap_log_error(APLOG_MARK, APLOG_ERR, errno, (server_rec *)data,
572 "Error accepting on cgid socket.");
576 if ((pid = fork()) > 0) {
580 /* setup the STDERR here, because I have all the info
581 * for it. I'll do the STDIN and STDOUT later, but I can't
582 * do STDERR as easily.
584 if (sconf->logname) {
585 dup2(open(sconf->logname, O_WRONLY), STDERR_FILENO);
588 ap_get_os_file(&errfile, main_server->error_log);
589 dup2(errfile, STDERR_FILENO);
591 cgid_server_child(sd2);
594 ap_log_error(APLOG_MARK, APLOG_ERR, errno, (server_rec *)data,
595 "Couldn't fork cgi script");
601 static void cgid_init(ap_pool_t *p, ap_pool_t *plog, ap_pool_t *ptemp, server_rec *main_server)
606 if (once_through > 0) {
607 ap_create_pool(&pcgi, p);
609 if ((pid = fork()) < 0) {
610 ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server,
611 "Couldn't spawn cgid daemon process");
614 cgid_server(main_server);
617 #if APR_HAS_OTHER_CHILD
619 ap_pid.err = ap_pid.in = ap_pid.out = NULL;
620 ap_register_other_child(&ap_pid, cgid_maint, NULL, NULL, p);
626 static void *create_cgid_config(ap_pool_t *p, server_rec *s)
628 cgid_server_conf *c =
629 (cgid_server_conf *) ap_pcalloc(p, sizeof(cgid_server_conf));
632 c->logbytes = DEFAULT_LOGBYTES;
633 c->bufbytes = DEFAULT_BUFBYTES;
634 c->sockname = ap_server_root_relative(p, DEFAULT_SOCKET);
635 c->bin = c->bout = c->berror = NULL;
639 static void *merge_cgid_config(ap_pool_t *p, void *basev, void *overridesv)
641 cgid_server_conf *base = (cgid_server_conf *) basev, *overrides = (cgid_server_conf *) overridesv;
643 return overrides->logname ? overrides : base;
646 static const char *set_scriptlog(cmd_parms *cmd, void *dummy, const char *arg)
648 server_rec *s = cmd->server;
649 cgid_server_conf *conf =
650 (cgid_server_conf *) ap_get_module_config(s->module_config, &cgid_module);
656 static const char *set_scriptlog_length(cmd_parms *cmd, void *dummy, const char *arg)
658 server_rec *s = cmd->server;
659 cgid_server_conf *conf =
660 (cgid_server_conf *) ap_get_module_config(s->module_config, &cgid_module);
662 conf->logbytes = atol(arg);
666 static const char *set_scriptlog_buffer(cmd_parms *cmd, void *dummy, const char *arg)
668 server_rec *s = cmd->server;
669 cgid_server_conf *conf =
670 (cgid_server_conf *) ap_get_module_config(s->module_config, &cgid_module);
672 conf->bufbytes = atoi(arg);
676 static const char *set_script_socket(cmd_parms *cmd, void *dummy, const char *arg)
678 server_rec *s = cmd->server;
679 cgid_server_conf *conf =
680 (cgid_server_conf *) ap_get_module_config(s->module_config, &cgid_module);
682 conf->sockname = ap_server_root_relative(cmd->pool, arg);
686 static const command_rec cgid_cmds[] =
688 AP_INIT_TAKE1("ScriptLog", set_scriptlog, NULL, RSRC_CONF,
689 "the name of a log for script debugging info"),
690 AP_INIT_TAKE1("ScriptLogLength", set_scriptlog_length, NULL, RSRC_CONF,
691 "the maximum length (in bytes) of the script debug log"),
692 AP_INIT_TAKE1("ScriptLogBuffer", set_scriptlog_buffer, NULL, RSRC_CONF,
693 "the maximum size (in bytes) to record of a POST request"),
694 AP_INIT_TAKE1("Scriptsock", set_script_socket, NULL, RSRC_CONF,
695 "the name of the socket to use for communication with "
700 static int log_scripterror(request_rec *r, cgid_server_conf * conf, int ret,
701 int show_errno, char *error)
705 char time_str[AP_CTIME_LEN];
707 ap_log_rerror(APLOG_MARK, show_errno|APLOG_ERR, errno, r,
708 "%s: %s", error, r->filename);
710 if (!conf->logname ||
711 ((stat(ap_server_root_relative(r->pool, conf->logname), &finfo) == 0)
712 && (finfo.st_size > conf->logbytes)) ||
713 (ap_open(&f, ap_server_root_relative(r->pool, conf->logname),
714 APR_APPEND|APR_WRITE|APR_CREATE, APR_OS_DEFAULT, r->pool) != APR_SUCCESS)) {
718 /* "%% [Wed Jun 19 10:53:21 1996] GET /cgid-bin/printenv HTTP/1.0" */
719 ap_ctime(time_str, ap_now());
720 ap_fprintf(f, "%%%% [%s] %s %s%s%s %s\n", time_str, r->method, r->uri,
721 r->args ? "?" : "", r->args ? r->args : "", r->protocol);
722 /* "%% 500 /usr/local/apache/cgid-bin */
723 ap_fprintf(f, "%%%% %d %s\n", ret, r->filename);
725 ap_fprintf(f, "%%error\n%s\n", error);
731 static int log_script(request_rec *r, cgid_server_conf * conf, int ret,
732 char *dbuf, const char *sbuf, BUFF *script_in, BUFF *script_err)
734 ap_array_header_t *hdrs_arr = ap_table_elts(r->headers_in);
735 ap_table_entry_t *hdrs = (ap_table_entry_t *) hdrs_arr->elts;
736 char argsbuffer[HUGE_STRING_LEN];
740 char time_str[AP_CTIME_LEN];
742 if (!conf->logname ||
743 ((stat(ap_server_root_relative(r->pool, conf->logname), &finfo) == 0)
744 && (finfo.st_size > conf->logbytes)) ||
745 (ap_open(&f, ap_server_root_relative(r->pool, conf->logname),
746 APR_APPEND|APR_WRITE|APR_CREATE, APR_OS_DEFAULT, r->pool) != APR_SUCCESS)) {
747 /* Soak up script output */
748 while (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_in) > 0)
751 while (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_err) > 0)
757 /* "%% [Wed Jun 19 10:53:21 1996] GET /cgid-bin/printenv HTTP/1.0" */
758 ap_ctime(time_str, ap_now());
759 ap_fprintf(f, "%%%% [%s] %s %s%s%s %s\n", time_str, r->method, r->uri,
760 r->args ? "?" : "", r->args ? r->args : "", r->protocol);
761 /* "%% 500 /usr/local/apache/cgid-bin" */
762 ap_fprintf(f, "%%%% %d %s\n", ret, r->filename);
764 ap_puts("%request\n", f);
765 for (i = 0; i < hdrs_arr->nelts; ++i) {
768 ap_fprintf(f, "%s: %s\n", hdrs[i].key, hdrs[i].val);
770 if ((r->method_number == M_POST || r->method_number == M_PUT)
772 ap_fprintf(f, "\n%s\n", dbuf);
775 ap_puts("%response\n", f);
776 hdrs_arr = ap_table_elts(r->err_headers_out);
777 hdrs = (ap_table_entry_t *) hdrs_arr->elts;
779 for (i = 0; i < hdrs_arr->nelts; ++i) {
782 ap_fprintf(f, "%s: %s\n", hdrs[i].key, hdrs[i].val);
786 ap_fprintf(f, "%s\n", sbuf);
788 if (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_in) > 0) {
789 ap_puts("%stdout\n", f);
790 ap_puts(argsbuffer, f);
791 while (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_in) > 0)
792 ap_puts(argsbuffer, f);
797 if (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_err) > 0) {
798 ap_puts("%stderr\n", f);
799 ap_puts(argsbuffer, f);
800 while (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_err) > 0)
801 ap_puts(argsbuffer, f);
806 ap_bclose(script_in);
808 ap_bclose(script_err);
817 /****************************************************************
819 * Actual cgid handling...
821 static int cgid_handler(request_rec *r)
823 int retval, nph, dbpos = 0;
824 char *argv0, *dbuf = NULL;
826 char argsbuffer[HUGE_STRING_LEN];
827 void *sconf = r->server->module_config;
828 cgid_server_conf *conf = (cgid_server_conf *) ap_get_module_config(sconf, &cgid_module);
829 int is_included = !strcmp(r->protocol, "INCLUDED");
832 struct sockaddr_un unix_addr;
833 ap_socket_t *tempsock = NULL;
836 script = ap_bcreate(r->pool, B_RDWR);
838 if (r->method_number == M_OPTIONS) {
839 /* 99 out of 100 cgid scripts, this is all they support */
840 r->allowed |= (1 << M_GET);
841 r->allowed |= (1 << M_POST);
845 if ((argv0 = strrchr(r->filename, '/')) != NULL)
850 nph = !(strncmp(argv0, "nph-", 4));
852 if ((argv0 = strrchr(r->filename, '/')) != NULL)
857 if (!(ap_allow_options(r) & OPT_EXECCGI) && !is_scriptaliased(r))
858 return log_scripterror(r, conf, HTTP_FORBIDDEN, APLOG_NOERRNO,
859 "Options ExecCGI is off in this directory");
860 if (nph && is_included)
861 return log_scripterror(r, conf, HTTP_FORBIDDEN, APLOG_NOERRNO,
862 "attempt to include NPH CGI script");
864 #if defined(OS2) || defined(WIN32)
865 /* Allow for cgid files without the .EXE extension on them under OS/2 */
866 if (r->finfo.st_mode == 0) {
870 newfile = ap_pstrcat(r->pool, r->filename, ".EXE", NULL);
872 if ((stat(newfile, &statbuf) != 0) || (!S_ISREG(statbuf.st_mode))) {
873 return log_scripterror(r, conf, HTTP_NOT_FOUND, 0,
874 "script not found or unable to stat");
876 r->filename = newfile;
880 if (r->finfo.protection == 0)
881 return log_scripterror(r, conf, HTTP_NOT_FOUND, APLOG_NOERRNO,
882 "script not found or unable to stat");
884 if (r->finfo.filetype == APR_DIR)
885 return log_scripterror(r, conf, HTTP_FORBIDDEN, APLOG_NOERRNO,
886 "attempt to invoke directory as script");
888 if (!ap_suexec_enabled) {
889 if (!ap_can_exec(&r->finfo))
890 return log_scripterror(r, conf, HTTP_FORBIDDEN, APLOG_NOERRNO,
891 "file permissions deny server execution");
894 ap_add_common_vars(r);
896 env = ap_create_environment(r->pool, r->subprocess_env);
898 if ((sd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
899 return log_scripterror(r, conf, HTTP_NOT_FOUND, 0,
900 "unable to create socket to cgi daemon");
902 memset(&unix_addr, 0, sizeof(unix_addr));
903 unix_addr.sun_family = AF_UNIX;
904 strcpy(unix_addr.sun_path, conf->sockname);
906 if (connect(sd, (struct sockaddr *)&unix_addr, sizeof(unix_addr)) < 0) {
907 return log_scripterror(r, conf, HTTP_NOT_FOUND, 0,
908 "unable to connect to cgi daemon");
911 send_req(sd, r, argv0, env);
913 ap_put_os_sock(&tempsock, &sd, pcgi);
915 iol = ap_iol_attach_socket(pcgi, tempsock);
917 ap_bpush_iol(script, iol);
919 if ((retval = ap_setup_client_block(r, REQUEST_CHUNKED_ERROR)))
922 if ((argv0 = strrchr(r->filename, '/')) != NULL)
927 /* Transfer any put/post args, CERN style...
928 * Note that we already ignore SIGPIPE in the core server.
931 if (ap_should_client_block(r)) {
932 int dbsize, len_read;
935 dbuf = ap_pcalloc(r->pool, conf->bufbytes + 1);
942 ap_get_client_block(r, argsbuffer, HUGE_STRING_LEN)) > 0) {
944 if ((dbpos + len_read) > conf->bufbytes) {
945 dbsize = conf->bufbytes - dbpos;
950 memcpy(dbuf + dbpos, argsbuffer, dbsize);
953 ap_bwrite(script, argsbuffer, len_read, &nbytes);
954 if (nbytes < len_read) {
955 /* silly script stopped reading, soak up remaining message */
956 while (ap_get_client_block(r, argsbuffer, HUGE_STRING_LEN) > 0) {
967 /* Handle script return... */
968 if (script && !nph) {
969 const char *location;
970 char sbuf[MAX_STRING_LEN];
973 if ((ret = ap_scan_script_header_err_buff(r, script, sbuf))) {
974 return log_script(r, conf, ret, dbuf, sbuf, script, NULL);
977 location = ap_table_get(r->headers_out, "Location");
979 if (location && location[0] == '/' && r->status == 200) {
981 /* Soak up all the script output */
982 while (ap_bgets(argsbuffer, HUGE_STRING_LEN, script) > 0) {
985 /* This redirect needs to be a GET no matter what the original
988 r->method = ap_pstrdup(r->pool, "GET");
989 r->method_number = M_GET;
991 /* We already read the message body (if any), so don't allow
992 * the redirected request to think it has one. We can ignore
993 * Transfer-Encoding, since we used REQUEST_CHUNKED_ERROR.
995 ap_table_unset(r->headers_in, "Content-Length");
997 ap_internal_redirect_handler(location, r);
1000 else if (location && r->status == 200) {
1001 /* XX Note that if a script wants to produce its own Redirect
1002 * body, it now has to explicitly *say* "Status: 302"
1004 return HTTP_MOVED_TEMPORARILY;
1007 ap_send_http_header(r);
1008 if (!r->header_only) {
1009 ap_send_fb(script, r);
1014 if (script && nph) {
1015 ap_send_fb(script, r);
1018 return OK; /* NOT r->status, even if it has changed. */
1021 static const handler_rec cgid_handlers[] =
1023 {CGI_MAGIC_TYPE, cgid_handler},
1024 {"cgi-script", cgid_handler},
1028 static void register_hook(void)
1030 ap_hook_post_config(cgid_init, NULL, NULL, AP_HOOK_MIDDLE);
1033 module MODULE_VAR_EXPORT cgid_module = {
1034 STANDARD20_MODULE_STUFF,
1035 NULL, /* dir config creater */
1036 NULL, /* dir merger --- default is to override */
1037 create_cgid_config, /* server config */
1038 merge_cgid_config, /* merge server config */
1039 cgid_cmds, /* command table */
1040 cgid_handlers, /* handlers */
1041 register_hook /* register_handlers */