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 #ifdef HAVE_SYS_SOCKET_H
95 #include <sys/socket.h>
97 #include <sys/un.h> /* for sockaddr_un */
98 #include <sys/types.h>
100 module MODULE_VAR_EXPORT cgid_module;
102 static void cgid_init(ap_pool_t *p, ap_pool_t *plog, ap_pool_t *ptemp, server_rec *main_server);
103 static int once_through = 0;
105 static ap_pool_t *pcgi;
107 /* KLUDGE --- for back-combatibility, we don't have to check Execcgid
108 * in ScriptAliased directories, which means we need to know if this
109 * request came through ScriptAlias or not... so the Alias module
110 * leaves a note for us.
113 static int is_scriptaliased(request_rec *r)
115 const char *t = ap_table_get(r->notes, "alias-forced-type");
116 return t && (!strcasecmp(t, "cgi-script"));
119 /* Configuration stuff */
121 #define DEFAULT_LOGBYTES 10385760
122 #define DEFAULT_BUFBYTES 1024
123 #define DEFAULT_SOCKET "logs/cgisock"
125 #define SHELL_PATH "/bin/sh"
128 const char *sockname;
137 /* If a request includes query info in the URL (stuff after "?"), and
138 * the query info does not contain "=" (indicative of a FORM submission),
139 * then this routine is called to create the argument list to be passed
140 * to the CGI script. When suexec is enabled, the suexec path, user, and
141 * group are the first three arguments to be passed; if not, all three
142 * must be NULL. The query info is split into separate arguments, where
143 * "+" is the separator between keyword arguments.
145 * XXXX: note that the WIN32 code uses one of the suexec strings
146 * to pass an interpreter name. Remember this if changing the way they
147 * are handled in create_argv.
150 static char **create_argv(ap_pool_t *p, char *path, char *user, char *group,
151 char *av0, const char *args)
158 /* count the number of keywords */
160 for (x = 0, numwords = 1; args[x]; x++) {
161 if (args[x] == '+') {
166 if (numwords > APACHE_ARG_MAX - 5) {
167 numwords = APACHE_ARG_MAX - 5; /* Truncate args to prevent overrun */
169 av = (char **) ap_palloc(p, (numwords + 5) * sizeof(char *));
183 for (x = 1; x <= numwords; x++) {
184 w = ap_getword_nulls(p, &args, '+');
186 av[idx++] = ap_escape_shell_cmd(p, w);
192 static int call_exec(request_rec *r, char *argv0, char **env, int shellcmd)
195 int errfileno = STDERR_FILENO;
196 /* the fd on r->server->error_log is closed, but we need somewhere to
197 * put the error messages from the log_* functions. So, we use stderr,
198 * since that is better than allowing errors to go unnoticed.
200 ap_put_os_file(&r->server->error_log, &errfileno, r->pool);
201 /* TODO: reimplement suexec */
203 if (ap_suexec_enabled
204 && ((r->server->server_uid != ap_user_id)
205 || (r->server->server_gid != ap_group_id)
206 || (!strncmp("/~", r->uri, 2)))) {
208 char *execuser, *grpname;
212 if (!strncmp("/~", r->uri, 2)) {
214 char *username = ap_pstrdup(r->pool, r->uri + 2);
215 char *pos = strchr(username, '/');
221 if ((pw = getpwnam(username)) == NULL) {
222 ap_log_rerror(APLOG_MARK, APLOG_ERR, r,
223 "getpwnam: invalid username %s", username);
226 execuser = ap_pstrcat(r->pool, "~", pw->pw_name, NULL);
227 user_gid = pw->pw_gid;
229 if ((gr = getgrgid(user_gid)) == NULL) {
230 if ((grpname = ap_palloc(r->pool, 16)) == NULL) {
234 ap_snprintf(grpname, 16, "%ld", (long) user_gid);
238 grpname = gr->gr_name;
242 if ((pw = getpwuid(r->server->server_uid)) == NULL) {
243 ap_log_rerror(APLOG_MARK, APLOG_ERR, r,
244 "getpwuid: invalid userid %ld",
245 (long) r->server->server_uid);
248 execuser = ap_pstrdup(r->pool, pw->pw_name);
250 if ((gr = getgrgid(r->server->server_gid)) == NULL) {
251 ap_log_rerror(APLOG_MARK, APLOG_ERR, r,
252 "getgrgid: invalid groupid %ld",
253 (long) r->server->server_gid);
256 grpname = gr->gr_name;
260 execle(SUEXEC_BIN, SUEXEC_BIN, execuser, grpname, argv0,
264 else if ((!r->args) || (!r->args[0]) || strchr(r->args, '=')) {
265 execle(SUEXEC_BIN, SUEXEC_BIN, execuser, grpname, argv0,
271 create_argv(r->pool, SUEXEC_BIN, execuser, grpname,
279 execle(SHELL_PATH, SHELL_PATH, "-c", argv0, NULL, env);
282 else if ((!r->args) || (!r->args[0]) || strchr(r->args, '=')) {
283 execle(r->filename, argv0, NULL, env);
288 create_argv(r->pool, NULL, NULL, NULL, argv0, r->args),
297 static void cgid_maint(int reason, void *data, ap_wait_t status)
299 #ifdef APR_HAS_OTHER_CHILD
302 case APR_OC_REASON_DEATH:
303 case APR_OC_REASON_LOST:
304 /* stop gap to make sure everything else works. In the end,
305 * we'll just restart the cgid server. */
306 ap_destroy_pool(pcgi);
307 kill(getppid(), SIGWINCH);
309 case APR_OC_REASON_RESTART:
310 case APR_OC_REASON_UNREGISTER:
311 ap_destroy_pool(pcgi);
318 static void get_req(int fd, request_rec *r, char **filename, char **argv0, char ***env)
323 core_dir_config *temp_core;
326 r->server = ap_pcalloc(r->pool, sizeof(server_rec));
328 read(fd, &j, sizeof(int));
329 read(fd, &len, sizeof(int));
330 data = ap_pcalloc(r->pool, len + 1); /* get a cleared byte for final '\0' */
331 i = read(fd, data, len);
333 r->filename = ap_getword(r->pool, (const char **)&data, '\n');
334 *argv0 = ap_getword(r->pool, (const char **)&data, '\n');
336 r->uri = ap_getword(r->pool, (const char **)&data, '\n');
338 environ = ap_pcalloc(r->pool, (j + 2) *sizeof(char *));
340 for (i = 0; i < j; i++) {
341 environ[i] = ap_getword(r->pool, (const char **)&data, '\n');
344 r->args = ap_getword(r->pool, (const char **)&data, '\n');
346 read(fd, &r->server->server_uid, sizeof(uid_t));
347 read(fd, &r->server->server_gid, sizeof(gid_t));
349 read(fd, &i, sizeof(int));
351 /* add 1, so that if i == 0, we still malloc something. */
352 dconf = (void **)malloc(sizeof(void *) * i + 1);
354 temp_core = (core_dir_config *)malloc(sizeof(core_module));
357 read(fd, &j, sizeof(int));
359 temp_core->limit_cpu = (struct rlimit *)malloc (sizeof(struct rlimit));
360 read(fd, temp_core->limit_cpu, sizeof(struct rlimit));
363 temp_core->limit_cpu = NULL;
367 #if defined (RLIMIT_DATA) || defined(RLIMIT_VMEM) || defined(RLIMIT_AS)
368 read(fd, &j, sizeof(int));
370 temp_core->limit_mem = (struct rlimit *)malloc (sizeof(struct rlimit));
371 read(fd, temp_core->limit_mem, sizeof(struct rlimit));
374 temp_core->limit_mem = NULL;
379 read(fd, &j, sizeof(int));
381 temp_core->limit_nproc = (struct rlimit *)malloc (sizeof(struct rlimit));
382 read(fd, temp_core->limit_nproc, sizeof(struct rlimit));
385 temp_core->limit_nproc = NULL;
389 dconf[i] = (void *)temp_core;
390 r->per_dir_config = dconf;
395 static void send_req(int fd, request_rec *r, char *argv0, char **env)
401 data = ap_pstrcat(r->pool, r->filename, "\n", argv0, "\n", r->uri, "\n",
404 for (i =0; env[i]; i++) {
408 if (write(fd, &i, sizeof(int)) < 0) {
409 ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
410 "write to cgi daemon process");
413 for (i = 0; env[i]; i++) {
414 data = ap_pstrcat(r->pool, data, env[i], "\n", NULL);
416 data = ap_pstrcat(r->pool, data, r->args, NULL);
418 if (write(fd, &len, sizeof(int)) < 0) {
419 ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
420 "write to cgi daemon process");
422 if (write(fd, data, len) < 0) {
423 ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
424 "write to cgi daemon process");
426 if (write(fd, &r->server->server_uid, sizeof(uid_t)) < 0) {
427 ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
428 "write to cgi daemon process");
430 if (write(fd, &r->server->server_gid, sizeof(gid_t)) < 0) {
431 ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
432 "write to cgi daemon process");
434 if (write(fd, &core_module.module_index, sizeof(int)) < 0) {
435 ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
436 "write to cgi daemon process");
440 if (conf->limit_cpu) {
442 write(fd, &len, sizeof(int));
443 write(fd, conf->limit_cpu, sizeof(struct rlimit));
447 write(fd, &len, sizeof(int));
451 #if defined(RLIMIT_DATA) || defined(RLIMIT_VMEM) || defined(RLIMIT_AS)
452 if (conf->limit_mem) {
454 write(fd, &len, sizeof(int));
455 write(fd, conf->limit_mem, sizeof(struct rlimit));
459 write(fd, &len, sizeof(int));
464 if (conf->limit_nproc) {
466 write(fd, &len, sizeof(int));
467 write(fd, conf->limit_nproc, sizeof(struct rlimit));
471 write(fd, &len, sizeof(int));
477 static int cgid_server_child(int sd)
485 ap_create_pool(&p, pcgi);
486 r = ap_pcalloc(p, sizeof(request_rec));
488 dup2(sd, STDIN_FILENO);
489 dup2(sd, STDOUT_FILENO);
490 get_req(sd, r, &filename, &argv0, &env);
491 call_exec(r, argv0, env, 0);
492 exit(-1); /* We should NEVER get here */
495 static int cgid_server(void *data)
497 struct sockaddr_un unix_addr;
499 int sd, sd2, len, rc;
502 server_rec *main_server = data;
503 cgid_server_conf *sconf = (cgid_server_conf *)ap_get_module_config(
504 main_server->module_config, &cgid_module);
506 ap_signal(SIGCHLD, SIG_IGN);
507 if (unlink(sconf->sockname) < 0 &&
509 ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server,
510 "Couldn't unlink unix domain socket %s",
512 /* just a warning; don't bail out */
515 if ((sd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
516 ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server,
517 "Couldn't create unix domain socket");
521 memset(&unix_addr, 0, sizeof(unix_addr));
522 unix_addr.sun_family = AF_UNIX;
523 strcpy(unix_addr.sun_path, sconf->sockname);
525 omask = umask(0077); /* so that only Apache can use socket */
526 rc = bind(sd, (struct sockaddr *)&unix_addr, sizeof(unix_addr));
527 umask(omask); /* can't fail, so can't clobber errno */
529 ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server,
530 "Couldn't bind unix domain socket %s",
534 /* Most implementations silently enforce a value of 5 anyway.
535 * This way, it'll work the same everywhere. */
536 if (listen(sd, 5) < 0) {
537 ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server,
538 "Couldn't listen on unix domain socket");
543 if (chown(sconf->sockname, unixd_config.user_id, -1) < 0) {
544 ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server,
545 "Couldn't change owner of unix domain socket %s",
551 unixd_setup_child(); /* if running as root, switch to configured user/group */
554 len = sizeof(unix_addr);
555 sd2 = accept(sd, (struct sockaddr *)&unix_addr, &len);
557 ap_log_error(APLOG_MARK, APLOG_ERR, errno, (server_rec *)data,
558 "Error accepting on cgid socket.");
562 if ((pid = fork()) > 0) {
566 /* setup the STDERR here, because I have all the info
567 * for it. I'll do the STDIN and STDOUT later, but I can't
568 * do STDERR as easily.
570 if (sconf->logname) {
571 dup2(open(sconf->logname, O_WRONLY), STDERR_FILENO);
574 ap_get_os_file(&errfile, main_server->error_log);
575 dup2(errfile, STDERR_FILENO);
577 cgid_server_child(sd2);
580 ap_log_error(APLOG_MARK, APLOG_ERR, errno, (server_rec *)data,
581 "Couldn't fork cgi script");
587 static void cgid_init(ap_pool_t *p, ap_pool_t *plog, ap_pool_t *ptemp, server_rec *main_server)
592 if (once_through > 0) {
593 ap_create_pool(&pcgi, p);
595 if ((pid = fork()) < 0) {
596 ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server,
597 "Couldn't spawn cgid daemon process");
600 cgid_server(main_server);
603 #ifdef APR_HAS_OTHER_CHILD
605 ap_pid.err = ap_pid.in = ap_pid.out = NULL;
606 ap_register_other_child(&ap_pid, cgid_maint, NULL, NULL, p);
612 static void *create_cgid_config(ap_pool_t *p, server_rec *s)
614 cgid_server_conf *c =
615 (cgid_server_conf *) ap_pcalloc(p, sizeof(cgid_server_conf));
618 c->logbytes = DEFAULT_LOGBYTES;
619 c->bufbytes = DEFAULT_BUFBYTES;
620 c->sockname = ap_server_root_relative(p, DEFAULT_SOCKET);
621 c->bin = c->bout = c->berror = NULL;
625 static void *merge_cgid_config(ap_pool_t *p, void *basev, void *overridesv)
627 cgid_server_conf *base = (cgid_server_conf *) basev, *overrides = (cgid_server_conf *) overridesv;
629 return overrides->logname ? overrides : base;
632 static const char *set_scriptlog(cmd_parms *cmd, void *dummy, const char *arg)
634 server_rec *s = cmd->server;
635 cgid_server_conf *conf =
636 (cgid_server_conf *) ap_get_module_config(s->module_config, &cgid_module);
642 static const char *set_scriptlog_length(cmd_parms *cmd, void *dummy, const char *arg)
644 server_rec *s = cmd->server;
645 cgid_server_conf *conf =
646 (cgid_server_conf *) ap_get_module_config(s->module_config, &cgid_module);
648 conf->logbytes = atol(arg);
652 static const char *set_scriptlog_buffer(cmd_parms *cmd, void *dummy, const char *arg)
654 server_rec *s = cmd->server;
655 cgid_server_conf *conf =
656 (cgid_server_conf *) ap_get_module_config(s->module_config, &cgid_module);
658 conf->bufbytes = atoi(arg);
662 static const char *set_script_socket(cmd_parms *cmd, void *dummy, const char *arg)
664 server_rec *s = cmd->server;
665 cgid_server_conf *conf =
666 (cgid_server_conf *) ap_get_module_config(s->module_config, &cgid_module);
668 conf->sockname = ap_server_root_relative(cmd->pool, arg);
672 static const command_rec cgid_cmds[] =
674 AP_INIT_TAKE1("ScriptLog", set_scriptlog, NULL, RSRC_CONF,
675 "the name of a log for script debugging info"),
676 AP_INIT_TAKE1("ScriptLogLength", set_scriptlog_length, NULL, RSRC_CONF,
677 "the maximum length (in bytes) of the script debug log"),
678 AP_INIT_TAKE1("ScriptLogBuffer", set_scriptlog_buffer, NULL, RSRC_CONF,
679 "the maximum size (in bytes) to record of a POST request"),
680 AP_INIT_TAKE1("Scriptsock", set_script_socket, NULL, RSRC_CONF,
681 "the name of the socket to use for communication with "
686 static int log_scripterror(request_rec *r, cgid_server_conf * conf, int ret,
687 int show_errno, char *error)
691 char time_str[AP_CTIME_LEN];
693 ap_log_rerror(APLOG_MARK, show_errno|APLOG_ERR, errno, r,
694 "%s: %s", error, r->filename);
696 if (!conf->logname ||
697 ((stat(ap_server_root_relative(r->pool, conf->logname), &finfo) == 0)
698 && (finfo.st_size > conf->logbytes)) ||
699 (ap_open(&f, ap_server_root_relative(r->pool, conf->logname),
700 APR_APPEND|APR_WRITE|APR_CREATE, APR_OS_DEFAULT, r->pool) != APR_SUCCESS)) {
704 /* "%% [Wed Jun 19 10:53:21 1996] GET /cgid-bin/printenv HTTP/1.0" */
705 ap_ctime(time_str, ap_now());
706 ap_fprintf(f, "%%%% [%s] %s %s%s%s %s\n", time_str, r->method, r->uri,
707 r->args ? "?" : "", r->args ? r->args : "", r->protocol);
708 /* "%% 500 /usr/local/apache/cgid-bin */
709 ap_fprintf(f, "%%%% %d %s\n", ret, r->filename);
711 ap_fprintf(f, "%%error\n%s\n", error);
717 static int log_script(request_rec *r, cgid_server_conf * conf, int ret,
718 char *dbuf, const char *sbuf, BUFF *script_in, BUFF *script_err)
720 ap_array_header_t *hdrs_arr = ap_table_elts(r->headers_in);
721 ap_table_entry_t *hdrs = (ap_table_entry_t *) hdrs_arr->elts;
722 char argsbuffer[HUGE_STRING_LEN];
726 char time_str[AP_CTIME_LEN];
728 if (!conf->logname ||
729 ((stat(ap_server_root_relative(r->pool, conf->logname), &finfo) == 0)
730 && (finfo.st_size > conf->logbytes)) ||
731 (ap_open(&f, ap_server_root_relative(r->pool, conf->logname),
732 APR_APPEND|APR_WRITE|APR_CREATE, APR_OS_DEFAULT, r->pool) != APR_SUCCESS)) {
733 /* Soak up script output */
734 while (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_in) > 0)
737 while (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_err) > 0)
743 /* "%% [Wed Jun 19 10:53:21 1996] GET /cgid-bin/printenv HTTP/1.0" */
744 ap_ctime(time_str, ap_now());
745 ap_fprintf(f, "%%%% [%s] %s %s%s%s %s\n", time_str, r->method, r->uri,
746 r->args ? "?" : "", r->args ? r->args : "", r->protocol);
747 /* "%% 500 /usr/local/apache/cgid-bin" */
748 ap_fprintf(f, "%%%% %d %s\n", ret, r->filename);
750 ap_puts("%request\n", f);
751 for (i = 0; i < hdrs_arr->nelts; ++i) {
754 ap_fprintf(f, "%s: %s\n", hdrs[i].key, hdrs[i].val);
756 if ((r->method_number == M_POST || r->method_number == M_PUT)
758 ap_fprintf(f, "\n%s\n", dbuf);
761 ap_puts("%response\n", f);
762 hdrs_arr = ap_table_elts(r->err_headers_out);
763 hdrs = (ap_table_entry_t *) hdrs_arr->elts;
765 for (i = 0; i < hdrs_arr->nelts; ++i) {
768 ap_fprintf(f, "%s: %s\n", hdrs[i].key, hdrs[i].val);
772 ap_fprintf(f, "%s\n", sbuf);
774 if (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_in) > 0) {
775 ap_puts("%stdout\n", f);
776 ap_puts(argsbuffer, f);
777 while (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_in) > 0)
778 ap_puts(argsbuffer, f);
783 if (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_err) > 0) {
784 ap_puts("%stderr\n", f);
785 ap_puts(argsbuffer, f);
786 while (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_err) > 0)
787 ap_puts(argsbuffer, f);
792 ap_bclose(script_in);
794 ap_bclose(script_err);
803 /****************************************************************
805 * Actual cgid handling...
807 static int cgid_handler(request_rec *r)
809 int retval, nph, dbpos = 0;
810 char *argv0, *dbuf = NULL;
812 char argsbuffer[HUGE_STRING_LEN];
813 void *sconf = r->server->module_config;
814 cgid_server_conf *conf = (cgid_server_conf *) ap_get_module_config(sconf, &cgid_module);
815 int is_included = !strcmp(r->protocol, "INCLUDED");
818 struct sockaddr_un unix_addr;
819 ap_socket_t *tempsock = NULL;
822 script = ap_bcreate(r->pool, B_RDWR);
824 if (r->method_number == M_OPTIONS) {
825 /* 99 out of 100 cgid scripts, this is all they support */
826 r->allowed |= (1 << M_GET);
827 r->allowed |= (1 << M_POST);
831 if ((argv0 = strrchr(r->filename, '/')) != NULL)
836 nph = !(strncmp(argv0, "nph-", 4));
838 if ((argv0 = strrchr(r->filename, '/')) != NULL)
843 if (!(ap_allow_options(r) & OPT_EXECCGI) && !is_scriptaliased(r))
844 return log_scripterror(r, conf, FORBIDDEN, APLOG_NOERRNO,
845 "Options ExecCGI is off in this directory");
846 if (nph && is_included)
847 return log_scripterror(r, conf, FORBIDDEN, APLOG_NOERRNO,
848 "attempt to include NPH CGI script");
850 #if defined(OS2) || defined(WIN32)
851 /* Allow for cgid files without the .EXE extension on them under OS/2 */
852 if (r->finfo.st_mode == 0) {
856 newfile = ap_pstrcat(r->pool, r->filename, ".EXE", NULL);
858 if ((stat(newfile, &statbuf) != 0) || (!S_ISREG(statbuf.st_mode))) {
859 return log_scripterror(r, conf, NOT_FOUND, 0,
860 "script not found or unable to stat");
862 r->filename = newfile;
866 if (r->finfo.protection == 0)
867 return log_scripterror(r, conf, NOT_FOUND, APLOG_NOERRNO,
868 "script not found or unable to stat");
870 if (r->finfo.filetype == APR_DIR)
871 return log_scripterror(r, conf, FORBIDDEN, APLOG_NOERRNO,
872 "attempt to invoke directory as script");
874 if (!ap_suexec_enabled) {
875 if (!ap_can_exec(&r->finfo))
876 return log_scripterror(r, conf, FORBIDDEN, APLOG_NOERRNO,
877 "file permissions deny server execution");
880 ap_add_common_vars(r);
882 env = ap_create_environment(r->pool, r->subprocess_env);
884 if ((sd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
885 return log_scripterror(r, conf, NOT_FOUND, 0,
886 "unable to create socket to cgi daemon");
888 memset(&unix_addr, 0, sizeof(unix_addr));
889 unix_addr.sun_family = AF_UNIX;
890 strcpy(unix_addr.sun_path, conf->sockname);
892 if (connect(sd, (struct sockaddr *)&unix_addr, sizeof(unix_addr)) < 0) {
893 return log_scripterror(r, conf, NOT_FOUND, 0,
894 "unable to connect to cgi daemon");
897 send_req(sd, r, argv0, env);
899 ap_put_os_sock(&tempsock, &sd, pcgi);
901 iol = unix_attach_socket(tempsock);
903 ap_bpush_iol(script, iol);
905 if ((retval = ap_setup_client_block(r, REQUEST_CHUNKED_ERROR)))
908 if ((argv0 = strrchr(r->filename, '/')) != NULL)
913 /* Transfer any put/post args, CERN style...
914 * Note that we already ignore SIGPIPE in the core server.
917 if (ap_should_client_block(r)) {
918 int dbsize, len_read;
921 dbuf = ap_pcalloc(r->pool, conf->bufbytes + 1);
928 ap_get_client_block(r, argsbuffer, HUGE_STRING_LEN)) > 0) {
930 if ((dbpos + len_read) > conf->bufbytes) {
931 dbsize = conf->bufbytes - dbpos;
936 memcpy(dbuf + dbpos, argsbuffer, dbsize);
939 ap_bwrite(script, argsbuffer, len_read, &nbytes);
940 if (nbytes < len_read) {
941 /* silly script stopped reading, soak up remaining message */
942 while (ap_get_client_block(r, argsbuffer, HUGE_STRING_LEN) > 0) {
953 /* Handle script return... */
954 if (script && !nph) {
955 const char *location;
956 char sbuf[MAX_STRING_LEN];
959 if ((ret = ap_scan_script_header_err_buff(r, script, sbuf))) {
960 return log_script(r, conf, ret, dbuf, sbuf, script, NULL);
963 location = ap_table_get(r->headers_out, "Location");
965 if (location && location[0] == '/' && r->status == 200) {
967 /* Soak up all the script output */
968 while (ap_bgets(argsbuffer, HUGE_STRING_LEN, script) > 0) {
971 /* This redirect needs to be a GET no matter what the original
974 r->method = ap_pstrdup(r->pool, "GET");
975 r->method_number = M_GET;
977 /* We already read the message body (if any), so don't allow
978 * the redirected request to think it has one. We can ignore
979 * Transfer-Encoding, since we used REQUEST_CHUNKED_ERROR.
981 ap_table_unset(r->headers_in, "Content-Length");
983 ap_internal_redirect_handler(location, r);
986 else if (location && r->status == 200) {
987 /* XX Note that if a script wants to produce its own Redirect
988 * body, it now has to explicitly *say* "Status: 302"
993 ap_send_http_header(r);
994 if (!r->header_only) {
995 ap_send_fb(script, r);
1000 if (script && nph) {
1001 ap_send_fb(script, r);
1004 return OK; /* NOT r->status, even if it has changed. */
1007 static const handler_rec cgid_handlers[] =
1009 {CGI_MAGIC_TYPE, cgid_handler},
1010 {"cgi-script", cgid_handler},
1014 static void register_hook(void)
1016 ap_hook_post_config(cgid_init, NULL, NULL, AP_HOOK_MIDDLE);
1019 module MODULE_VAR_EXPORT cgid_module = {
1020 STANDARD20_MODULE_STUFF,
1021 NULL, /* dir config creater */
1022 NULL, /* dir merger --- default is to override */
1023 create_cgid_config, /* server config */
1024 merge_cgid_config, /* merge server config */
1025 cgid_cmds, /* command table */
1026 cgid_handlers, /* handlers */
1027 register_hook /* register_handlers */