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_general.h"
78 #include "apr_file_io.h"
79 #include "apr_portable.h"
81 #include "http_config.h"
82 #include "http_request.h"
83 #include "http_core.h"
84 #include "http_protocol.h"
85 #include "http_main.h"
87 #include "util_script.h"
88 #include "http_conf_globals.h"
91 #include "iol_socket.h"
94 #define UNIX_PATH_MAX 108
99 unsigned short sun_family;
100 char sun_path[UNIX_PATH_MAX];
105 module MODULE_VAR_EXPORT cgid_module;
107 static void cgid_init(ap_pool_t *p, ap_pool_t *plog, ap_pool_t *ptemp, server_rec *main_server);
108 static int once_through = 0;
110 static ap_pool_t *pcgi;
112 /* KLUDGE --- for back-combatibility, we don't have to check Execcgid
113 * in ScriptAliased directories, which means we need to know if this
114 * request came through ScriptAlias or not... so the Alias module
115 * leaves a note for us.
118 static int is_scriptaliased(request_rec *r)
120 const char *t = ap_table_get(r->notes, "alias-forced-type");
121 return t && (!strcasecmp(t, "cgi-script"));
124 /* Configuration stuff */
126 #define DEFAULT_LOGBYTES 10385760
127 #define DEFAULT_BUFBYTES 1024
128 #define DEFAULT_SOCKET "logs/cgisock"
130 #define SHELL_PATH "/bin/sh"
133 const char *sockname;
142 /* If a request includes query info in the URL (stuff after "?"), and
143 * the query info does not contain "=" (indicative of a FORM submission),
144 * then this routine is called to create the argument list to be passed
145 * to the CGI script. When suexec is enabled, the suexec path, user, and
146 * group are the first three arguments to be passed; if not, all three
147 * must be NULL. The query info is split into separate arguments, where
148 * "+" is the separator between keyword arguments.
150 * XXXX: note that the WIN32 code uses one of the suexec strings
151 * to pass an interpreter name. Remember this if changing the way they
152 * are handled in create_argv.
155 static char **create_argv(ap_pool_t *p, char *path, char *user, char *group,
156 char *av0, const char *args)
163 /* count the number of keywords */
165 for (x = 0, numwords = 1; args[x]; x++) {
166 if (args[x] == '+') {
171 if (numwords > APACHE_ARG_MAX - 5) {
172 numwords = APACHE_ARG_MAX - 5; /* Truncate args to prevent overrun */
174 av = (char **) ap_palloc(p, (numwords + 5) * sizeof(char *));
188 for (x = 1; x <= numwords; x++) {
189 w = ap_getword_nulls(p, &args, '+');
191 av[idx++] = ap_escape_shell_cmd(p, w);
197 static int call_exec(request_rec *r, char *argv0, char **env, int shellcmd)
200 int errfileno = STDERR_FILENO;
202 /* the fd on r->server->error_log is closed, but we need somewhere to * put the error messages from the log_* functions. So, we use stderr,
203 * since that is better than allowing errors to go unnoticed.
205 ap_put_os_file(&r->server->error_log, &errfileno, r->pool);
206 /* TODO: reimplement suexec */
208 if (ap_suexec_enabled
209 && ((r->server->server_uid != ap_user_id)
210 || (r->server->server_gid != ap_group_id)
211 || (!strncmp("/~", r->uri, 2)))) {
213 char *execuser, *grpname;
217 if (!strncmp("/~", r->uri, 2)) {
219 char *username = ap_pstrdup(r->pool, r->uri + 2);
220 char *pos = strchr(username, '/');
226 if ((pw = getpwnam(username)) == NULL) {
227 ap_log_rerror(APLOG_MARK, APLOG_ERR, r,
228 "getpwnam: invalid username %s", username);
231 execuser = ap_pstrcat(r->pool, "~", pw->pw_name, NULL);
232 user_gid = pw->pw_gid;
234 if ((gr = getgrgid(user_gid)) == NULL) {
235 if ((grpname = ap_palloc(r->pool, 16)) == NULL) {
239 ap_snprintf(grpname, 16, "%ld", (long) user_gid);
243 grpname = gr->gr_name;
247 if ((pw = getpwuid(r->server->server_uid)) == NULL) {
248 ap_log_rerror(APLOG_MARK, APLOG_ERR, r,
249 "getpwuid: invalid userid %ld",
250 (long) r->server->server_uid);
253 execuser = ap_pstrdup(r->pool, pw->pw_name);
255 if ((gr = getgrgid(r->server->server_gid)) == NULL) {
256 ap_log_rerror(APLOG_MARK, APLOG_ERR, r,
257 "getgrgid: invalid groupid %ld",
258 (long) r->server->server_gid);
261 grpname = gr->gr_name;
265 execle(SUEXEC_BIN, SUEXEC_BIN, execuser, grpname, argv0,
269 else if ((!r->args) || (!r->args[0]) || strchr(r->args, '=')) {
270 execle(SUEXEC_BIN, SUEXEC_BIN, execuser, grpname, argv0,
276 create_argv(r->pool, SUEXEC_BIN, execuser, grpname,
284 execle(SHELL_PATH, SHELL_PATH, "-c", argv0, NULL, env);
287 else if ((!r->args) || (!r->args[0]) || strchr(r->args, '=')) {
288 execle(r->filename, argv0, NULL, env);
293 create_argv(r->pool, NULL, NULL, NULL, argv0, r->args),
302 static void cgid_maint(int reason, void *data, ap_wait_t status)
304 #ifdef APR_HAS_OTHER_CHILD
307 case APR_OC_REASON_DEATH:
308 case APR_OC_REASON_LOST:
309 /* stop gap to make sure everything else works. In the end,
310 * we'll just restart the cgid server. */
311 ap_destroy_pool(pcgi);
312 kill(getppid(), SIGWINCH);
314 case APR_OC_REASON_RESTART:
315 case APR_OC_REASON_UNREGISTER:
316 ap_destroy_pool(pcgi);
323 static void get_req(int fd, request_rec *r, char **filename, char **argv0, char ***env)
328 core_dir_config *temp_core;
331 r->server = ap_pcalloc(r->pool, sizeof(server_rec));
333 read(fd, &j, sizeof(int));
334 read(fd, &len, sizeof(int));
335 data = ap_pcalloc(r->pool, len);
336 i = read(fd, data, len);
338 r->filename = ap_getword(r->pool, (const char **)&data, '\n');
339 *argv0 = ap_getword(r->pool, (const char **)&data, '\n');
341 r->uri = ap_getword(r->pool, (const char **)&data, '\n');
343 environ = ap_pcalloc(r->pool, (j + 2) *sizeof(char *));
345 for (i = 0; i < j; i++) {
346 environ[i] = ap_getword(r->pool, (const char **)&data, '\n');
349 r->args = ap_getword(r->pool, (const char **)&data, '\n');
351 read(fd, &r->server->server_uid, sizeof(uid_t));
352 read(fd, &r->server->server_gid, sizeof(gid_t));
354 read(fd, &i, sizeof(int));
356 /* add 1, so that if i == 0, we still malloc something. */
357 dconf = (void **)malloc(sizeof(void *) * i + 1);
359 temp_core = (core_dir_config *)malloc(sizeof(core_module));
362 read(fd, &j, sizeof(int));
364 temp_core->limit_cpu = (struct rlimit *)malloc (sizeof(struct rlimit));
365 read(fd, temp_core->limit_cpu, sizeof(struct rlimit));
368 temp_core->limit_cpu = NULL;
372 #if defined (RLIMIT_DATA) || defined(RLIMIT_VMEM) || defined(RLIMIT_AS)
373 read(fd, &j, sizeof(int));
375 temp_core->limit_mem = (struct rlimit *)malloc (sizeof(struct rlimit));
376 read(fd, temp_core->limit_mem, sizeof(struct rlimit));
379 temp_core->limit_mem = NULL;
384 read(fd, &j, sizeof(int));
386 temp_core->limit_nproc = (struct rlimit *)malloc (sizeof(struct rlimit));
387 read(fd, temp_core->limit_nproc, sizeof(struct rlimit));
390 temp_core->limit_nproc = NULL;
394 dconf[i] = (void *)temp_core;
395 r->per_dir_config = dconf;
400 static void send_req(int fd, request_rec *r, char *argv0, char **env)
406 data = ap_pstrcat(r->pool, r->filename, "\n", argv0, "\n", r->uri, "\n",
409 for (i =0; env[i]; i++) {
413 if (write(fd, &i, sizeof(int)) < 0) {
414 ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
415 "write to cgi daemon process");
418 for (i = 0; env[i]; i++) {
419 data = ap_pstrcat(r->pool, data, env[i], "\n", NULL);
421 data = ap_pstrcat(r->pool, data, r->args, NULL);
423 if (write(fd, &len, sizeof(int)) < 0) {
424 ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
425 "write to cgi daemon process");
427 if (write(fd, data, len) < 0) {
428 ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
429 "write to cgi daemon process");
431 if (write(fd, &r->server->server_uid, sizeof(uid_t)) < 0) {
432 ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
433 "write to cgi daemon process");
435 if (write(fd, &r->server->server_gid, sizeof(gid_t)) < 0) {
436 ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
437 "write to cgi daemon process");
439 if (write(fd, &core_module.module_index, sizeof(int)) < 0) {
440 ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
441 "write to cgi daemon process");
445 if (conf->limit_cpu) {
447 write(fd, &len, sizeof(int));
448 write(fd, conf->limit_cpu, sizeof(struct rlimit));
452 write(fd, &len, sizeof(int));
456 #if defined(RLIMIT_DATA) || defined(RLIMIT_VMEM) || defined(RLIMIT_AS)
457 if (conf->limit_mem) {
459 write(fd, &len, sizeof(int));
460 write(fd, conf->limit_mem, sizeof(struct rlimit));
464 write(fd, &len, sizeof(int));
469 if (conf->limit_nproc) {
471 write(fd, &len, sizeof(int));
472 write(fd, conf->limit_nproc, sizeof(struct rlimit));
476 write(fd, &len, sizeof(int));
482 static int cgid_server_child(int sd)
490 ap_create_pool(&p, pcgi);
491 r = ap_pcalloc(p, sizeof(request_rec));
493 dup2(sd, STDIN_FILENO);
494 dup2(sd, STDOUT_FILENO);
495 get_req(sd, r, &filename, &argv0, &env);
496 call_exec(r, argv0, env, 0);
497 exit(-1); /* We should NEVER get here */
500 static int cgid_server(void *data)
502 struct sockaddr_un unix_addr;
506 server_rec *main_server = data;
507 cgid_server_conf *sconf = (cgid_server_conf *)ap_get_module_config(
508 main_server->module_config, &cgid_module);
510 ap_signal(SIGCHLD, SIG_IGN);
511 unlink(sconf->sockname);
513 if ((sd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
514 ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server,
515 "Couldn't create unix domain socket");
518 memset(&unix_addr, 0, sizeof(unix_addr));
519 unix_addr.sun_family = AF_UNIX;
520 strcpy(unix_addr.sun_path, sconf->sockname);
522 if (bind(sd, (struct sockaddr *)&unix_addr, sizeof(unix_addr)) < 0) {
523 ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server,
524 "Couldn't bind unix domain socket");
526 /* Most implementations silently enforce a value of 5 anyway.
527 * This way, it'll work the same everywhere. */
528 if (listen(sd, 5) < 0) {
529 ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server,
530 "Couldn't listen on unix domain socket");
534 sd2 = accept(sd, (struct sockaddr *)&unix_addr, &len);
536 ap_log_error(APLOG_MARK, APLOG_ERR, errno, (server_rec *)data,
537 "Error accepting on cgid socket.");
541 if ((pid = fork()) > 0) {
545 /* setup the STDERR here, because I have all the info
546 * for it. I'll do the STDIN and STDOUT later, but I can't
547 * do STDERR as easily.
549 if (sconf->logname) {
550 dup2(open(sconf->logname, O_WRONLY), STDERR_FILENO);
553 ap_get_os_file(&errfile, main_server->error_log);
554 dup2(errfile, STDERR_FILENO);
556 cgid_server_child(sd2);
559 ap_log_error(APLOG_MARK, APLOG_ERR, errno, (server_rec *)data,
560 "Couldn't fork cgi script");
566 static void cgid_init(ap_pool_t *p, ap_pool_t *plog, ap_pool_t *ptemp, server_rec *main_server)
572 cgid_server_conf *sconf = (cgid_server_conf *)ap_get_module_config(
573 main_server->module_config, &cgid_module);
575 if (once_through > 0) {
576 ap_create_pool(&pcgi, p);
577 tempfd = creat(sconf->sockname, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH);
580 if ((pid = fork()) < 0) {
581 ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server,
582 "Couldn't spawn cgid daemon process");
585 cgid_server(main_server);
588 #ifdef APR_HAS_OTHER_CHILD
590 ap_pid.err = ap_pid.in = ap_pid.out = NULL;
591 ap_register_other_child(&ap_pid, cgid_maint, NULL, NULL, p);
597 static void *create_cgid_config(ap_pool_t *p, server_rec *s)
599 cgid_server_conf *c =
600 (cgid_server_conf *) ap_pcalloc(p, sizeof(cgid_server_conf));
603 c->logbytes = DEFAULT_LOGBYTES;
604 c->bufbytes = DEFAULT_BUFBYTES;
605 c->sockname = ap_server_root_relative(p, DEFAULT_SOCKET);
606 c->bin = c->bout = c->berror = NULL;
610 static void *merge_cgid_config(ap_pool_t *p, void *basev, void *overridesv)
612 cgid_server_conf *base = (cgid_server_conf *) basev, *overrides = (cgid_server_conf *) overridesv;
614 return overrides->logname ? overrides : base;
617 static const char *set_scriptlog(cmd_parms *cmd, void *dummy, char *arg)
619 server_rec *s = cmd->server;
620 cgid_server_conf *conf =
621 (cgid_server_conf *) ap_get_module_config(s->module_config, &cgid_module);
627 static const char *set_scriptlog_length(cmd_parms *cmd, void *dummy, char *arg)
629 server_rec *s = cmd->server;
630 cgid_server_conf *conf =
631 (cgid_server_conf *) ap_get_module_config(s->module_config, &cgid_module);
633 conf->logbytes = atol(arg);
637 static const char *set_scriptlog_buffer(cmd_parms *cmd, void *dummy, char *arg)
639 server_rec *s = cmd->server;
640 cgid_server_conf *conf =
641 (cgid_server_conf *) ap_get_module_config(s->module_config, &cgid_module);
643 conf->bufbytes = atoi(arg);
647 static const char *set_script_socket(cmd_parms *cmd, void *dummy, char *arg)
649 server_rec *s = cmd->server;
650 cgid_server_conf *conf =
651 (cgid_server_conf *) ap_get_module_config(s->module_config, &cgid_module);
653 conf->sockname = ap_server_root_relative(cmd->pool, arg);
657 static const command_rec cgid_cmds[] =
659 {"ScriptLog", set_scriptlog, NULL, RSRC_CONF, TAKE1,
660 "the name of a log for script debugging info"},
661 {"ScriptLogLength", set_scriptlog_length, NULL, RSRC_CONF, TAKE1,
662 "the maximum length (in bytes) of the script debug log"},
663 {"ScriptLogBuffer", set_scriptlog_buffer, NULL, RSRC_CONF, TAKE1,
664 "the maximum size (in bytes) to record of a POST request"},
665 {"Scriptsock", set_script_socket, NULL, RSRC_CONF, TAKE1,
666 "the name of the socket to use for communication with the cgi daemon."},
670 static int log_scripterror(request_rec *r, cgid_server_conf * conf, int ret,
671 int show_errno, char *error)
675 char time_str[AP_CTIME_LEN];
677 ap_log_rerror(APLOG_MARK, show_errno|APLOG_ERR, errno, r,
678 "%s: %s", error, r->filename);
680 if (!conf->logname ||
681 ((stat(ap_server_root_relative(r->pool, conf->logname), &finfo) == 0)
682 && (finfo.st_size > conf->logbytes)) ||
683 (ap_open(&f, ap_server_root_relative(r->pool, conf->logname),
684 APR_APPEND, APR_OS_DEFAULT, r->pool) != APR_SUCCESS)) {
688 /* "%% [Wed Jun 19 10:53:21 1996] GET /cgid-bin/printenv HTTP/1.0" */
689 ap_ctime(time_str, ap_now());
690 ap_fprintf(f, "%%%% [%s] %s %s%s%s %s\n", time_str, r->method, r->uri,
691 r->args ? "?" : "", r->args ? r->args : "", r->protocol);
692 /* "%% 500 /usr/local/apache/cgid-bin */
693 ap_fprintf(f, "%%%% %d %s\n", ret, r->filename);
695 ap_fprintf(f, "%%error\n%s\n", error);
701 static int log_script(request_rec *r, cgid_server_conf * conf, int ret,
702 char *dbuf, const char *sbuf, BUFF *script_in, BUFF *script_err)
704 ap_array_header_t *hdrs_arr = ap_table_elts(r->headers_in);
705 ap_table_entry_t *hdrs = (ap_table_entry_t *) hdrs_arr->elts;
706 char argsbuffer[HUGE_STRING_LEN];
710 char time_str[AP_CTIME_LEN];
712 if (!conf->logname ||
713 ((stat(ap_server_root_relative(r->pool, conf->logname), &finfo) == 0)
714 && (finfo.st_size > conf->logbytes)) ||
715 (ap_open(&f, ap_server_root_relative(r->pool, conf->logname),
716 APR_APPEND, APR_OS_DEFAULT, r->pool) != APR_SUCCESS)) {
717 /* Soak up script output */
718 while (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_in) > 0)
720 while (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_err) > 0)
725 /* "%% [Wed Jun 19 10:53:21 1996] GET /cgid-bin/printenv HTTP/1.0" */
726 ap_ctime(time_str, ap_now());
727 ap_fprintf(f, "%%%% [%s] %s %s%s%s %s\n", time_str, r->method, r->uri,
728 r->args ? "?" : "", r->args ? r->args : "", r->protocol);
729 /* "%% 500 /usr/local/apache/cgid-bin" */
730 ap_fprintf(f, "%%%% %d %s\n", ret, r->filename);
732 ap_puts("%request\n", f);
733 for (i = 0; i < hdrs_arr->nelts; ++i) {
736 ap_fprintf(f, "%s: %s\n", hdrs[i].key, hdrs[i].val);
738 if ((r->method_number == M_POST || r->method_number == M_PUT)
740 ap_fprintf(f, "\n%s\n", dbuf);
743 ap_puts("%response\n", f);
744 hdrs_arr = ap_table_elts(r->err_headers_out);
745 hdrs = (ap_table_entry_t *) hdrs_arr->elts;
747 for (i = 0; i < hdrs_arr->nelts; ++i) {
750 ap_fprintf(f, "%s: %s\n", hdrs[i].key, hdrs[i].val);
754 ap_fprintf(f, "%s\n", sbuf);
756 if (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_in) > 0) {
757 ap_puts("%stdout\n", f);
758 ap_puts(argsbuffer, f);
759 while (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_in) > 0)
760 ap_puts(argsbuffer, f);
764 if (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_err) > 0) {
765 ap_puts("%stderr\n", f);
766 ap_puts(argsbuffer, f);
767 while (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_err) > 0)
768 ap_puts(argsbuffer, f);
772 ap_bclose(script_in);
773 ap_bclose(script_err);
781 /****************************************************************
783 * Actual cgid handling...
785 static int cgid_handler(request_rec *r)
787 int retval, nph, dbpos = 0;
788 char *argv0, *dbuf = NULL;
790 char argsbuffer[HUGE_STRING_LEN];
791 void *sconf = r->server->module_config;
792 cgid_server_conf *conf = (cgid_server_conf *) ap_get_module_config(sconf, &cgid_module);
793 int is_included = !strcmp(r->protocol, "INCLUDED");
796 struct sockaddr_un unix_addr;
797 ap_socket_t *tempsock = NULL;
800 script = ap_bcreate(r->pool, B_RDWR);
802 if (r->method_number == M_OPTIONS) {
803 /* 99 out of 100 cgid scripts, this is all they support */
804 r->allowed |= (1 << M_GET);
805 r->allowed |= (1 << M_POST);
809 if ((argv0 = strrchr(r->filename, '/')) != NULL)
814 nph = !(strncmp(argv0, "nph-", 4));
816 if ((argv0 = strrchr(r->filename, '/')) != NULL)
821 if (!(ap_allow_options(r) & OPT_EXECCGI) && !is_scriptaliased(r))
822 return log_scripterror(r, conf, FORBIDDEN, APLOG_NOERRNO,
823 "Options ExecCGI is off in this directory");
824 if (nph && is_included)
825 return log_scripterror(r, conf, FORBIDDEN, APLOG_NOERRNO,
826 "attempt to include NPH CGI script");
828 #if defined(OS2) || defined(WIN32)
829 /* Allow for cgid files without the .EXE extension on them under OS/2 */
830 if (r->finfo.st_mode == 0) {
834 newfile = ap_pstrcat(r->pool, r->filename, ".EXE", NULL);
836 if ((stat(newfile, &statbuf) != 0) || (!S_ISREG(statbuf.st_mode))) {
837 return log_scripterror(r, conf, NOT_FOUND, 0,
838 "script not found or unable to stat");
840 r->filename = newfile;
844 if (r->finfo.protection == 0)
845 return log_scripterror(r, conf, NOT_FOUND, APLOG_NOERRNO,
846 "script not found or unable to stat");
848 if (r->finfo.filetype == APR_DIR)
849 return log_scripterror(r, conf, FORBIDDEN, APLOG_NOERRNO,
850 "attempt to invoke directory as script");
852 if (!ap_suexec_enabled) {
853 if (!ap_can_exec(&r->finfo))
854 return log_scripterror(r, conf, FORBIDDEN, APLOG_NOERRNO,
855 "file permissions deny server execution");
858 ap_add_common_vars(r);
860 env = ap_create_environment(r->pool, r->subprocess_env);
862 if ((sd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
863 return log_scripterror(r, conf, NOT_FOUND, 0,
864 "unable to create socket to cgi daemon");
866 memset(&unix_addr, 0, sizeof(unix_addr));
867 unix_addr.sun_family = AF_UNIX;
868 strcpy(unix_addr.sun_path, conf->sockname);
870 if (connect(sd, (struct sockaddr *)&unix_addr, sizeof(unix_addr)) < 0) {
871 return log_scripterror(r, conf, NOT_FOUND, 0,
872 "unable to connect to cgi daemon");
875 send_req(sd, r, argv0, env);
877 ap_put_os_sock(&tempsock, &sd, pcgi);
879 iol = unix_attach_socket(tempsock);
881 ap_bpush_iol(script, iol);
883 if ((retval = ap_setup_client_block(r, REQUEST_CHUNKED_ERROR)))
886 if ((argv0 = strrchr(r->filename, '/')) != NULL)
891 /* Transfer any put/post args, CERN style...
892 * Note that we already ignore SIGPIPE in the core server.
895 if (ap_should_client_block(r)) {
896 int dbsize, len_read;
899 dbuf = ap_pcalloc(r->pool, conf->bufbytes + 1);
906 ap_get_client_block(r, argsbuffer, HUGE_STRING_LEN)) > 0) {
908 if ((dbpos + len_read) > conf->bufbytes) {
909 dbsize = conf->bufbytes - dbpos;
914 memcpy(dbuf + dbpos, argsbuffer, dbsize);
917 ap_bwrite(script, argsbuffer, len_read, &nbytes);
918 if (nbytes < len_read) {
919 /* silly script stopped reading, soak up remaining message */
920 while (ap_get_client_block(r, argsbuffer, HUGE_STRING_LEN) > 0) {
931 /* Handle script return... */
932 if (script && !nph) {
933 const char *location;
934 char sbuf[MAX_STRING_LEN];
937 if ((ret = ap_scan_script_header_err_buff(r, script, sbuf))) {
938 return log_script(r, conf, ret, dbuf, sbuf, script, NULL);
941 #ifdef CHARSET_EBCDIC
942 /* Now check the Content-Type to decide if conversion is needed */
944 #endif /*CHARSET_EBCDIC*/
946 location = ap_table_get(r->headers_out, "Location");
948 if (location && location[0] == '/' && r->status == 200) {
950 /* Soak up all the script output */
951 while (ap_bgets(argsbuffer, HUGE_STRING_LEN, script) > 0) {
954 /* This redirect needs to be a GET no matter what the original
957 r->method = ap_pstrdup(r->pool, "GET");
958 r->method_number = M_GET;
960 /* We already read the message body (if any), so don't allow
961 * the redirected request to think it has one. We can ignore
962 * Transfer-Encoding, since we used REQUEST_CHUNKED_ERROR.
964 ap_table_unset(r->headers_in, "Content-Length");
966 ap_internal_redirect_handler(location, r);
969 else if (location && r->status == 200) {
970 /* XX Note that if a script wants to produce its own Redirect
971 * body, it now has to explicitly *say* "Status: 302"
976 ap_send_http_header(r);
977 if (!r->header_only) {
978 ap_send_fb(script, r);
984 ap_send_fb(script, r);
987 return OK; /* NOT r->status, even if it has changed. */
990 static const handler_rec cgid_handlers[] =
992 {CGI_MAGIC_TYPE, cgid_handler},
993 {"cgi-script", cgid_handler},
997 static void register_hook(void)
999 ap_hook_post_config(cgid_init, NULL, NULL, AP_HOOK_MIDDLE);
1002 module MODULE_VAR_EXPORT cgid_module = {
1003 STANDARD20_MODULE_STUFF,
1004 NULL, /* dir config creater */
1005 NULL, /* dir merger --- default is to override */
1006 create_cgid_config, /* server config */
1007 merge_cgid_config, /* merge server config */
1008 cgid_cmds, /* command table */
1009 cgid_handlers, /* handlers */
1010 register_hook /* register_handlers */