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"
95 #define UNIX_PATH_MAX 108
100 unsigned short sun_family;
101 char sun_path[UNIX_PATH_MAX];
106 module MODULE_VAR_EXPORT cgid_module;
108 static void cgid_init(ap_pool_t *p, ap_pool_t *plog, ap_pool_t *ptemp, server_rec *main_server);
109 static int once_through = 0;
111 static ap_pool_t *pcgi;
113 /* KLUDGE --- for back-combatibility, we don't have to check Execcgid
114 * in ScriptAliased directories, which means we need to know if this
115 * request came through ScriptAlias or not... so the Alias module
116 * leaves a note for us.
119 static int is_scriptaliased(request_rec *r)
121 const char *t = ap_table_get(r->notes, "alias-forced-type");
122 return t && (!strcasecmp(t, "cgi-script"));
125 /* Configuration stuff */
127 #define DEFAULT_LOGBYTES 10385760
128 #define DEFAULT_BUFBYTES 1024
129 #define DEFAULT_SOCKET "logs/cgisock"
131 #define SHELL_PATH "/bin/sh"
134 const char *sockname;
143 /* If a request includes query info in the URL (stuff after "?"), and
144 * the query info does not contain "=" (indicative of a FORM submission),
145 * then this routine is called to create the argument list to be passed
146 * to the CGI script. When suexec is enabled, the suexec path, user, and
147 * group are the first three arguments to be passed; if not, all three
148 * must be NULL. The query info is split into separate arguments, where
149 * "+" is the separator between keyword arguments.
151 * XXXX: note that the WIN32 code uses one of the suexec strings
152 * to pass an interpreter name. Remember this if changing the way they
153 * are handled in create_argv.
156 static char **create_argv(ap_pool_t *p, char *path, char *user, char *group,
157 char *av0, const char *args)
164 /* count the number of keywords */
166 for (x = 0, numwords = 1; args[x]; x++) {
167 if (args[x] == '+') {
172 if (numwords > APACHE_ARG_MAX - 5) {
173 numwords = APACHE_ARG_MAX - 5; /* Truncate args to prevent overrun */
175 av = (char **) ap_palloc(p, (numwords + 5) * sizeof(char *));
189 for (x = 1; x <= numwords; x++) {
190 w = ap_getword_nulls(p, &args, '+');
192 av[idx++] = ap_escape_shell_cmd(p, w);
198 static int call_exec(request_rec *r, char *argv0, char **env, int shellcmd)
201 int errfileno = STDERR_FILENO;
202 /* the fd on r->server->error_log is closed, but we need somewhere to
203 * put the error messages from the log_* functions. So, we use stderr,
204 * since that is better than allowing errors to go unnoticed.
206 ap_put_os_file(&r->server->error_log, &errfileno, r->pool);
207 /* TODO: reimplement suexec */
209 if (ap_suexec_enabled
210 && ((r->server->server_uid != ap_user_id)
211 || (r->server->server_gid != ap_group_id)
212 || (!strncmp("/~", r->uri, 2)))) {
214 char *execuser, *grpname;
218 if (!strncmp("/~", r->uri, 2)) {
220 char *username = ap_pstrdup(r->pool, r->uri + 2);
221 char *pos = strchr(username, '/');
227 if ((pw = getpwnam(username)) == NULL) {
228 ap_log_rerror(APLOG_MARK, APLOG_ERR, r,
229 "getpwnam: invalid username %s", username);
232 execuser = ap_pstrcat(r->pool, "~", pw->pw_name, NULL);
233 user_gid = pw->pw_gid;
235 if ((gr = getgrgid(user_gid)) == NULL) {
236 if ((grpname = ap_palloc(r->pool, 16)) == NULL) {
240 ap_snprintf(grpname, 16, "%ld", (long) user_gid);
244 grpname = gr->gr_name;
248 if ((pw = getpwuid(r->server->server_uid)) == NULL) {
249 ap_log_rerror(APLOG_MARK, APLOG_ERR, r,
250 "getpwuid: invalid userid %ld",
251 (long) r->server->server_uid);
254 execuser = ap_pstrdup(r->pool, pw->pw_name);
256 if ((gr = getgrgid(r->server->server_gid)) == NULL) {
257 ap_log_rerror(APLOG_MARK, APLOG_ERR, r,
258 "getgrgid: invalid groupid %ld",
259 (long) r->server->server_gid);
262 grpname = gr->gr_name;
266 execle(SUEXEC_BIN, SUEXEC_BIN, execuser, grpname, argv0,
270 else if ((!r->args) || (!r->args[0]) || strchr(r->args, '=')) {
271 execle(SUEXEC_BIN, SUEXEC_BIN, execuser, grpname, argv0,
277 create_argv(r->pool, SUEXEC_BIN, execuser, grpname,
285 execle(SHELL_PATH, SHELL_PATH, "-c", argv0, NULL, env);
288 else if ((!r->args) || (!r->args[0]) || strchr(r->args, '=')) {
289 execle(r->filename, argv0, NULL, env);
294 create_argv(r->pool, NULL, NULL, NULL, argv0, r->args),
303 static void cgid_maint(int reason, void *data, ap_wait_t status)
305 #ifdef APR_HAS_OTHER_CHILD
308 case APR_OC_REASON_DEATH:
309 case APR_OC_REASON_LOST:
310 /* stop gap to make sure everything else works. In the end,
311 * we'll just restart the cgid server. */
312 ap_destroy_pool(pcgi);
313 kill(getppid(), SIGWINCH);
315 case APR_OC_REASON_RESTART:
316 case APR_OC_REASON_UNREGISTER:
317 ap_destroy_pool(pcgi);
324 static void get_req(int fd, request_rec *r, char **filename, char **argv0, char ***env)
329 core_dir_config *temp_core;
332 r->server = ap_pcalloc(r->pool, sizeof(server_rec));
334 read(fd, &j, sizeof(int));
335 read(fd, &len, sizeof(int));
336 data = ap_pcalloc(r->pool, len + 1); /* get a cleared byte for final '\0' */
337 i = read(fd, data, len);
339 r->filename = ap_getword(r->pool, (const char **)&data, '\n');
340 *argv0 = ap_getword(r->pool, (const char **)&data, '\n');
342 r->uri = ap_getword(r->pool, (const char **)&data, '\n');
344 environ = ap_pcalloc(r->pool, (j + 2) *sizeof(char *));
346 for (i = 0; i < j; i++) {
347 environ[i] = ap_getword(r->pool, (const char **)&data, '\n');
350 r->args = ap_getword(r->pool, (const char **)&data, '\n');
352 read(fd, &r->server->server_uid, sizeof(uid_t));
353 read(fd, &r->server->server_gid, sizeof(gid_t));
355 read(fd, &i, sizeof(int));
357 /* add 1, so that if i == 0, we still malloc something. */
358 dconf = (void **)malloc(sizeof(void *) * i + 1);
360 temp_core = (core_dir_config *)malloc(sizeof(core_module));
363 read(fd, &j, sizeof(int));
365 temp_core->limit_cpu = (struct rlimit *)malloc (sizeof(struct rlimit));
366 read(fd, temp_core->limit_cpu, sizeof(struct rlimit));
369 temp_core->limit_cpu = NULL;
373 #if defined (RLIMIT_DATA) || defined(RLIMIT_VMEM) || defined(RLIMIT_AS)
374 read(fd, &j, sizeof(int));
376 temp_core->limit_mem = (struct rlimit *)malloc (sizeof(struct rlimit));
377 read(fd, temp_core->limit_mem, sizeof(struct rlimit));
380 temp_core->limit_mem = NULL;
385 read(fd, &j, sizeof(int));
387 temp_core->limit_nproc = (struct rlimit *)malloc (sizeof(struct rlimit));
388 read(fd, temp_core->limit_nproc, sizeof(struct rlimit));
391 temp_core->limit_nproc = NULL;
395 dconf[i] = (void *)temp_core;
396 r->per_dir_config = dconf;
401 static void send_req(int fd, request_rec *r, char *argv0, char **env)
407 data = ap_pstrcat(r->pool, r->filename, "\n", argv0, "\n", r->uri, "\n",
410 for (i =0; env[i]; i++) {
414 if (write(fd, &i, sizeof(int)) < 0) {
415 ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
416 "write to cgi daemon process");
419 for (i = 0; env[i]; i++) {
420 data = ap_pstrcat(r->pool, data, env[i], "\n", NULL);
422 data = ap_pstrcat(r->pool, data, r->args, NULL);
424 if (write(fd, &len, sizeof(int)) < 0) {
425 ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
426 "write to cgi daemon process");
428 if (write(fd, data, len) < 0) {
429 ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
430 "write to cgi daemon process");
432 if (write(fd, &r->server->server_uid, sizeof(uid_t)) < 0) {
433 ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
434 "write to cgi daemon process");
436 if (write(fd, &r->server->server_gid, sizeof(gid_t)) < 0) {
437 ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
438 "write to cgi daemon process");
440 if (write(fd, &core_module.module_index, sizeof(int)) < 0) {
441 ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
442 "write to cgi daemon process");
446 if (conf->limit_cpu) {
448 write(fd, &len, sizeof(int));
449 write(fd, conf->limit_cpu, sizeof(struct rlimit));
453 write(fd, &len, sizeof(int));
457 #if defined(RLIMIT_DATA) || defined(RLIMIT_VMEM) || defined(RLIMIT_AS)
458 if (conf->limit_mem) {
460 write(fd, &len, sizeof(int));
461 write(fd, conf->limit_mem, sizeof(struct rlimit));
465 write(fd, &len, sizeof(int));
470 if (conf->limit_nproc) {
472 write(fd, &len, sizeof(int));
473 write(fd, conf->limit_nproc, sizeof(struct rlimit));
477 write(fd, &len, sizeof(int));
483 static int cgid_server_child(int sd)
491 ap_create_pool(&p, pcgi);
492 r = ap_pcalloc(p, sizeof(request_rec));
494 dup2(sd, STDIN_FILENO);
495 dup2(sd, STDOUT_FILENO);
496 get_req(sd, r, &filename, &argv0, &env);
497 call_exec(r, argv0, env, 0);
498 exit(-1); /* We should NEVER get here */
501 static int cgid_server(void *data)
503 struct sockaddr_un unix_addr;
505 int sd, sd2, len, rc;
508 server_rec *main_server = data;
509 cgid_server_conf *sconf = (cgid_server_conf *)ap_get_module_config(
510 main_server->module_config, &cgid_module);
512 ap_signal(SIGCHLD, SIG_IGN);
513 if (unlink(sconf->sockname) < 0 &&
515 ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server,
516 "Couldn't unlink unix domain socket %s",
518 /* just a warning; don't bail out */
521 if ((sd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
522 ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server,
523 "Couldn't create unix domain socket");
527 memset(&unix_addr, 0, sizeof(unix_addr));
528 unix_addr.sun_family = AF_UNIX;
529 strcpy(unix_addr.sun_path, sconf->sockname);
531 omask = umask(0077); /* so that only Apache can use socket */
532 rc = bind(sd, (struct sockaddr *)&unix_addr, sizeof(unix_addr));
533 umask(omask); /* can't fail, so can't clobber errno */
535 ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server,
536 "Couldn't bind unix domain socket %s",
540 /* Most implementations silently enforce a value of 5 anyway.
541 * This way, it'll work the same everywhere. */
542 if (listen(sd, 5) < 0) {
543 ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server,
544 "Couldn't listen on unix domain socket");
549 if (chown(sconf->sockname, unixd_config.user_id, -1) < 0) {
550 ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server,
551 "Couldn't change owner of unix domain socket %s",
557 unixd_setup_child(); /* if running as root, switch to configured user/group */
560 len = sizeof(unix_addr);
561 sd2 = accept(sd, (struct sockaddr *)&unix_addr, &len);
563 ap_log_error(APLOG_MARK, APLOG_ERR, errno, (server_rec *)data,
564 "Error accepting on cgid socket.");
568 if ((pid = fork()) > 0) {
572 /* setup the STDERR here, because I have all the info
573 * for it. I'll do the STDIN and STDOUT later, but I can't
574 * do STDERR as easily.
576 if (sconf->logname) {
577 dup2(open(sconf->logname, O_WRONLY), STDERR_FILENO);
580 ap_get_os_file(&errfile, main_server->error_log);
581 dup2(errfile, STDERR_FILENO);
583 cgid_server_child(sd2);
586 ap_log_error(APLOG_MARK, APLOG_ERR, errno, (server_rec *)data,
587 "Couldn't fork cgi script");
593 static void cgid_init(ap_pool_t *p, ap_pool_t *plog, ap_pool_t *ptemp, server_rec *main_server)
598 if (once_through > 0) {
599 ap_create_pool(&pcgi, p);
601 if ((pid = fork()) < 0) {
602 ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server,
603 "Couldn't spawn cgid daemon process");
606 cgid_server(main_server);
609 #ifdef APR_HAS_OTHER_CHILD
611 ap_pid.err = ap_pid.in = ap_pid.out = NULL;
612 ap_register_other_child(&ap_pid, cgid_maint, NULL, NULL, p);
618 static void *create_cgid_config(ap_pool_t *p, server_rec *s)
620 cgid_server_conf *c =
621 (cgid_server_conf *) ap_pcalloc(p, sizeof(cgid_server_conf));
624 c->logbytes = DEFAULT_LOGBYTES;
625 c->bufbytes = DEFAULT_BUFBYTES;
626 c->sockname = ap_server_root_relative(p, DEFAULT_SOCKET);
627 c->bin = c->bout = c->berror = NULL;
631 static void *merge_cgid_config(ap_pool_t *p, void *basev, void *overridesv)
633 cgid_server_conf *base = (cgid_server_conf *) basev, *overrides = (cgid_server_conf *) overridesv;
635 return overrides->logname ? overrides : base;
638 static const char *set_scriptlog(cmd_parms *cmd, void *dummy, char *arg)
640 server_rec *s = cmd->server;
641 cgid_server_conf *conf =
642 (cgid_server_conf *) ap_get_module_config(s->module_config, &cgid_module);
648 static const char *set_scriptlog_length(cmd_parms *cmd, void *dummy, char *arg)
650 server_rec *s = cmd->server;
651 cgid_server_conf *conf =
652 (cgid_server_conf *) ap_get_module_config(s->module_config, &cgid_module);
654 conf->logbytes = atol(arg);
658 static const char *set_scriptlog_buffer(cmd_parms *cmd, void *dummy, char *arg)
660 server_rec *s = cmd->server;
661 cgid_server_conf *conf =
662 (cgid_server_conf *) ap_get_module_config(s->module_config, &cgid_module);
664 conf->bufbytes = atoi(arg);
668 static const char *set_script_socket(cmd_parms *cmd, void *dummy, char *arg)
670 server_rec *s = cmd->server;
671 cgid_server_conf *conf =
672 (cgid_server_conf *) ap_get_module_config(s->module_config, &cgid_module);
674 conf->sockname = ap_server_root_relative(cmd->pool, arg);
678 static const command_rec cgid_cmds[] =
680 {"ScriptLog", set_scriptlog, NULL, RSRC_CONF, TAKE1,
681 "the name of a log for script debugging info"},
682 {"ScriptLogLength", set_scriptlog_length, NULL, RSRC_CONF, TAKE1,
683 "the maximum length (in bytes) of the script debug log"},
684 {"ScriptLogBuffer", set_scriptlog_buffer, NULL, RSRC_CONF, TAKE1,
685 "the maximum size (in bytes) to record of a POST request"},
686 {"Scriptsock", set_script_socket, NULL, RSRC_CONF, TAKE1,
687 "the name of the socket to use for communication with the cgi daemon."},
691 static int log_scripterror(request_rec *r, cgid_server_conf * conf, int ret,
692 int show_errno, char *error)
696 char time_str[AP_CTIME_LEN];
698 ap_log_rerror(APLOG_MARK, show_errno|APLOG_ERR, errno, r,
699 "%s: %s", error, r->filename);
701 if (!conf->logname ||
702 ((stat(ap_server_root_relative(r->pool, conf->logname), &finfo) == 0)
703 && (finfo.st_size > conf->logbytes)) ||
704 (ap_open(&f, ap_server_root_relative(r->pool, conf->logname),
705 APR_APPEND|APR_WRITE|APR_CREATE, APR_OS_DEFAULT, r->pool) != APR_SUCCESS)) {
709 /* "%% [Wed Jun 19 10:53:21 1996] GET /cgid-bin/printenv HTTP/1.0" */
710 ap_ctime(time_str, ap_now());
711 ap_fprintf(f, "%%%% [%s] %s %s%s%s %s\n", time_str, r->method, r->uri,
712 r->args ? "?" : "", r->args ? r->args : "", r->protocol);
713 /* "%% 500 /usr/local/apache/cgid-bin */
714 ap_fprintf(f, "%%%% %d %s\n", ret, r->filename);
716 ap_fprintf(f, "%%error\n%s\n", error);
722 static int log_script(request_rec *r, cgid_server_conf * conf, int ret,
723 char *dbuf, const char *sbuf, BUFF *script_in, BUFF *script_err)
725 ap_array_header_t *hdrs_arr = ap_table_elts(r->headers_in);
726 ap_table_entry_t *hdrs = (ap_table_entry_t *) hdrs_arr->elts;
727 char argsbuffer[HUGE_STRING_LEN];
731 char time_str[AP_CTIME_LEN];
733 if (!conf->logname ||
734 ((stat(ap_server_root_relative(r->pool, conf->logname), &finfo) == 0)
735 && (finfo.st_size > conf->logbytes)) ||
736 (ap_open(&f, ap_server_root_relative(r->pool, conf->logname),
737 APR_APPEND|APR_WRITE|APR_CREATE, APR_OS_DEFAULT, r->pool) != APR_SUCCESS)) {
738 /* Soak up script output */
739 while (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_in) > 0)
742 while (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_err) > 0)
748 /* "%% [Wed Jun 19 10:53:21 1996] GET /cgid-bin/printenv HTTP/1.0" */
749 ap_ctime(time_str, ap_now());
750 ap_fprintf(f, "%%%% [%s] %s %s%s%s %s\n", time_str, r->method, r->uri,
751 r->args ? "?" : "", r->args ? r->args : "", r->protocol);
752 /* "%% 500 /usr/local/apache/cgid-bin" */
753 ap_fprintf(f, "%%%% %d %s\n", ret, r->filename);
755 ap_puts("%request\n", f);
756 for (i = 0; i < hdrs_arr->nelts; ++i) {
759 ap_fprintf(f, "%s: %s\n", hdrs[i].key, hdrs[i].val);
761 if ((r->method_number == M_POST || r->method_number == M_PUT)
763 ap_fprintf(f, "\n%s\n", dbuf);
766 ap_puts("%response\n", f);
767 hdrs_arr = ap_table_elts(r->err_headers_out);
768 hdrs = (ap_table_entry_t *) hdrs_arr->elts;
770 for (i = 0; i < hdrs_arr->nelts; ++i) {
773 ap_fprintf(f, "%s: %s\n", hdrs[i].key, hdrs[i].val);
777 ap_fprintf(f, "%s\n", sbuf);
779 if (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_in) > 0) {
780 ap_puts("%stdout\n", f);
781 ap_puts(argsbuffer, f);
782 while (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_in) > 0)
783 ap_puts(argsbuffer, f);
788 if (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_err) > 0) {
789 ap_puts("%stderr\n", f);
790 ap_puts(argsbuffer, f);
791 while (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_err) > 0)
792 ap_puts(argsbuffer, f);
797 ap_bclose(script_in);
799 ap_bclose(script_err);
808 /****************************************************************
810 * Actual cgid handling...
812 static int cgid_handler(request_rec *r)
814 int retval, nph, dbpos = 0;
815 char *argv0, *dbuf = NULL;
817 char argsbuffer[HUGE_STRING_LEN];
818 void *sconf = r->server->module_config;
819 cgid_server_conf *conf = (cgid_server_conf *) ap_get_module_config(sconf, &cgid_module);
820 int is_included = !strcmp(r->protocol, "INCLUDED");
823 struct sockaddr_un unix_addr;
824 ap_socket_t *tempsock = NULL;
827 script = ap_bcreate(r->pool, B_RDWR);
829 if (r->method_number == M_OPTIONS) {
830 /* 99 out of 100 cgid scripts, this is all they support */
831 r->allowed |= (1 << M_GET);
832 r->allowed |= (1 << M_POST);
836 if ((argv0 = strrchr(r->filename, '/')) != NULL)
841 nph = !(strncmp(argv0, "nph-", 4));
843 if ((argv0 = strrchr(r->filename, '/')) != NULL)
848 if (!(ap_allow_options(r) & OPT_EXECCGI) && !is_scriptaliased(r))
849 return log_scripterror(r, conf, FORBIDDEN, APLOG_NOERRNO,
850 "Options ExecCGI is off in this directory");
851 if (nph && is_included)
852 return log_scripterror(r, conf, FORBIDDEN, APLOG_NOERRNO,
853 "attempt to include NPH CGI script");
855 #if defined(OS2) || defined(WIN32)
856 /* Allow for cgid files without the .EXE extension on them under OS/2 */
857 if (r->finfo.st_mode == 0) {
861 newfile = ap_pstrcat(r->pool, r->filename, ".EXE", NULL);
863 if ((stat(newfile, &statbuf) != 0) || (!S_ISREG(statbuf.st_mode))) {
864 return log_scripterror(r, conf, NOT_FOUND, 0,
865 "script not found or unable to stat");
867 r->filename = newfile;
871 if (r->finfo.protection == 0)
872 return log_scripterror(r, conf, NOT_FOUND, APLOG_NOERRNO,
873 "script not found or unable to stat");
875 if (r->finfo.filetype == APR_DIR)
876 return log_scripterror(r, conf, FORBIDDEN, APLOG_NOERRNO,
877 "attempt to invoke directory as script");
879 if (!ap_suexec_enabled) {
880 if (!ap_can_exec(&r->finfo))
881 return log_scripterror(r, conf, FORBIDDEN, APLOG_NOERRNO,
882 "file permissions deny server execution");
885 ap_add_common_vars(r);
887 env = ap_create_environment(r->pool, r->subprocess_env);
889 if ((sd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
890 return log_scripterror(r, conf, NOT_FOUND, 0,
891 "unable to create socket to cgi daemon");
893 memset(&unix_addr, 0, sizeof(unix_addr));
894 unix_addr.sun_family = AF_UNIX;
895 strcpy(unix_addr.sun_path, conf->sockname);
897 if (connect(sd, (struct sockaddr *)&unix_addr, sizeof(unix_addr)) < 0) {
898 return log_scripterror(r, conf, NOT_FOUND, 0,
899 "unable to connect to cgi daemon");
902 send_req(sd, r, argv0, env);
904 ap_put_os_sock(&tempsock, &sd, pcgi);
906 iol = unix_attach_socket(tempsock);
908 ap_bpush_iol(script, iol);
910 if ((retval = ap_setup_client_block(r, REQUEST_CHUNKED_ERROR)))
913 if ((argv0 = strrchr(r->filename, '/')) != NULL)
918 /* Transfer any put/post args, CERN style...
919 * Note that we already ignore SIGPIPE in the core server.
922 if (ap_should_client_block(r)) {
923 int dbsize, len_read;
926 dbuf = ap_pcalloc(r->pool, conf->bufbytes + 1);
933 ap_get_client_block(r, argsbuffer, HUGE_STRING_LEN)) > 0) {
935 if ((dbpos + len_read) > conf->bufbytes) {
936 dbsize = conf->bufbytes - dbpos;
941 memcpy(dbuf + dbpos, argsbuffer, dbsize);
944 ap_bwrite(script, argsbuffer, len_read, &nbytes);
945 if (nbytes < len_read) {
946 /* silly script stopped reading, soak up remaining message */
947 while (ap_get_client_block(r, argsbuffer, HUGE_STRING_LEN) > 0) {
958 /* Handle script return... */
959 if (script && !nph) {
960 const char *location;
961 char sbuf[MAX_STRING_LEN];
964 if ((ret = ap_scan_script_header_err_buff(r, script, sbuf))) {
965 return log_script(r, conf, ret, dbuf, sbuf, script, NULL);
968 location = ap_table_get(r->headers_out, "Location");
970 if (location && location[0] == '/' && r->status == 200) {
972 /* Soak up all the script output */
973 while (ap_bgets(argsbuffer, HUGE_STRING_LEN, script) > 0) {
976 /* This redirect needs to be a GET no matter what the original
979 r->method = ap_pstrdup(r->pool, "GET");
980 r->method_number = M_GET;
982 /* We already read the message body (if any), so don't allow
983 * the redirected request to think it has one. We can ignore
984 * Transfer-Encoding, since we used REQUEST_CHUNKED_ERROR.
986 ap_table_unset(r->headers_in, "Content-Length");
988 ap_internal_redirect_handler(location, r);
991 else if (location && r->status == 200) {
992 /* XX Note that if a script wants to produce its own Redirect
993 * body, it now has to explicitly *say* "Status: 302"
998 ap_send_http_header(r);
999 if (!r->header_only) {
1000 ap_send_fb(script, r);
1005 if (script && nph) {
1006 ap_send_fb(script, r);
1009 return OK; /* NOT r->status, even if it has changed. */
1012 static const handler_rec cgid_handlers[] =
1014 {CGI_MAGIC_TYPE, cgid_handler},
1015 {"cgi-script", cgid_handler},
1019 static void register_hook(void)
1021 ap_hook_post_config(cgid_init, NULL, NULL, AP_HOOK_MIDDLE);
1024 module MODULE_VAR_EXPORT cgid_module = {
1025 STANDARD20_MODULE_STUFF,
1026 NULL, /* dir config creater */
1027 NULL, /* dir merger --- default is to override */
1028 create_cgid_config, /* server config */
1029 merge_cgid_config, /* merge server config */
1030 cgid_cmds, /* command table */
1031 cgid_handlers, /* handlers */
1032 register_hook /* register_handlers */