| /* ==================================================================== |
| * Copyright (c) 1995-1999 The Apache Group. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. All advertising materials mentioning features or use of this |
| * software must display the following acknowledgment: |
| * "This product includes software developed by the Apache Group |
| * for use in the Apache HTTP server project (http://www.apache.org/)." |
| * |
| * 4. The names "Apache Server" and "Apache Group" must not be used to |
| * endorse or promote products derived from this software without |
| * prior written permission. For written permission, please contact |
| * * apache@apache.org. |
| * |
| * 5. Products derived from this software may not be called "Apache" |
| * nor may "Apache" appear in their names without prior written |
| * permission of the Apache Group. |
| * |
| * 6. Redistributions of any form whatsoever must retain the following |
| * acknowledgment: |
| * "This product includes software developed by the Apache Group |
| * for use in the Apache HTTP server project (http://www.apache.org/)." |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE APACHE GROUP ``AS IS'' AND ANY |
| * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE APACHE GROUP OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
| * OF THE POSSIBILITY OF SUCH DAMAGE. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Group and was originally based |
| * on public domain software written at the National Center for |
| * Supercomputing Applications, University of Illinois, Urbana-Champaign. |
| * For more information on the Apache Group and the Apache HTTP server |
| * project, please see <http://www.apache.org/>. |
| * |
| */ |
| |
| /* |
| * http_script: keeps all script-related ramblings together. |
| * |
| * Compliant to cgi/1.1 spec |
| * |
| * Adapted by rst from original NCSA code by Rob McCool |
| * |
| * Apache adds some new env vars; REDIRECT_URL and REDIRECT_QUERY_STRING for |
| * custom error responses, and DOCUMENT_ROOT because we found it useful. |
| * It also adds SERVER_ADMIN - useful for scripts to know who to mail when |
| * they fail. |
| */ |
| |
| |
| |
| #define CORE_PRIVATE |
| |
| #include "apr_lib.h" |
| #include "apr_general.h" |
| #include "apr_file_io.h" |
| #include "apr_portable.h" |
| #include "httpd.h" |
| #include "http_config.h" |
| #include "http_request.h" |
| #include "http_core.h" |
| #include "http_protocol.h" |
| #include "http_main.h" |
| #include "http_log.h" |
| #include "util_script.h" |
| #include "http_conf_globals.h" |
| #include "buff.h" |
| #include "ap_mpm.h" |
| #include "iol_socket.h" |
| |
| #ifndef UNIX_PATH_MAX |
| #define UNIX_PATH_MAX 108 |
| #endif |
| |
| #ifndef sockaddr_un |
| struct sockaddr_un { |
| unsigned short sun_family; |
| char sun_path[UNIX_PATH_MAX]; |
| }; |
| #endif |
| |
| |
| module MODULE_VAR_EXPORT cgid_module; |
| |
| static void cgid_init(ap_context_t *p, ap_context_t *plog, ap_context_t *ptemp, server_rec *main_server); |
| static int once_through = 0; |
| |
| static ap_context_t *pcgi; |
| |
| /* KLUDGE --- for back-combatibility, we don't have to check Execcgid |
| * in ScriptAliased directories, which means we need to know if this |
| * request came through ScriptAlias or not... so the Alias module |
| * leaves a note for us. |
| */ |
| |
| static int is_scriptaliased(request_rec *r) |
| { |
| const char *t = ap_table_get(r->notes, "alias-forced-type"); |
| return t && (!strcasecmp(t, "cgi-script")); |
| } |
| |
| /* Configuration stuff */ |
| |
| #define DEFAULT_LOGBYTES 10385760 |
| #define DEFAULT_BUFBYTES 1024 |
| #define DEFAULT_SOCKET "logs/cgisock" |
| |
| typedef struct { |
| const char *sockname; |
| char *logname; |
| long logbytes; |
| int bufbytes; |
| BUFF *bin; |
| BUFF *bout; |
| BUFF *berror; |
| } cgid_server_conf; |
| |
| /* If a request includes query info in the URL (stuff after "?"), and |
| * the query info does not contain "=" (indicative of a FORM submission), |
| * then this routine is called to create the argument list to be passed |
| * to the CGI script. When suexec is enabled, the suexec path, user, and |
| * group are the first three arguments to be passed; if not, all three |
| * must be NULL. The query info is split into separate arguments, where |
| * "+" is the separator between keyword arguments. |
| * |
| * XXXX: note that the WIN32 code uses one of the suexec strings |
| * to pass an interpreter name. Remember this if changing the way they |
| * are handled in create_argv. |
| * |
| */ |
| static char **create_argv(ap_context_t *p, char *path, char *user, char *group, |
| char *av0, const char *args) |
| { |
| int x, numwords; |
| char **av; |
| char *w; |
| int idx = 0; |
| |
| /* count the number of keywords */ |
| |
| for (x = 0, numwords = 1; args[x]; x++) { |
| if (args[x] == '+') { |
| ++numwords; |
| } |
| } |
| |
| if (numwords > APACHE_ARG_MAX - 5) { |
| numwords = APACHE_ARG_MAX - 5; /* Truncate args to prevent overrun */ |
| } |
| av = (char **) ap_palloc(p, (numwords + 5) * sizeof(char *)); |
| |
| if (path) { |
| av[idx++] = path; |
| } |
| if (user) { |
| av[idx++] = user; |
| } |
| if (group) { |
| av[idx++] = group; |
| } |
| |
| av[idx++] = av0; |
| |
| for (x = 1; x <= numwords; x++) { |
| w = ap_getword_nulls(p, &args, '+'); |
| ap_unescape_url(w); |
| av[idx++] = ap_escape_shell_cmd(p, w); |
| } |
| av[idx] = NULL; |
| return av; |
| } |
| |
| static int call_exec(request_rec *r, char *argv0, char **env, int shellcmd) |
| { |
| int pid = 0; |
| int errfileno = STDERR_FILENO; |
| |
| /* 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, |
| * since that is better than allowing errors to go unnoticed. |
| */ |
| ap_put_os_file(&r->server->error_log, &errfileno, r->pool); |
| /* TODO: reimplement suexec */ |
| #if 0 |
| if (ap_suexec_enabled |
| && ((r->server->server_uid != ap_user_id) |
| || (r->server->server_gid != ap_group_id) |
| || (!strncmp("/~", r->uri, 2)))) { |
| |
| char *execuser, *grpname; |
| struct passwd *pw; |
| struct group *gr; |
| |
| if (!strncmp("/~", r->uri, 2)) { |
| gid_t user_gid; |
| char *username = ap_pstrdup(r->pool, r->uri + 2); |
| char *pos = strchr(username, '/'); |
| |
| if (pos) { |
| *pos = '\0'; |
| } |
| |
| if ((pw = getpwnam(username)) == NULL) { |
| ap_log_rerror(APLOG_MARK, APLOG_ERR, r, |
| "getpwnam: invalid username %s", username); |
| return (pid); |
| } |
| execuser = ap_pstrcat(r->pool, "~", pw->pw_name, NULL); |
| user_gid = pw->pw_gid; |
| |
| if ((gr = getgrgid(user_gid)) == NULL) { |
| if ((grpname = ap_palloc(r->pool, 16)) == NULL) { |
| return (pid); |
| } |
| else { |
| ap_snprintf(grpname, 16, "%ld", (long) user_gid); |
| } |
| } |
| else { |
| grpname = gr->gr_name; |
| } |
| } |
| else { |
| if ((pw = getpwuid(r->server->server_uid)) == NULL) { |
| ap_log_rerror(APLOG_MARK, APLOG_ERR, r, |
| "getpwuid: invalid userid %ld", |
| (long) r->server->server_uid); |
| return (pid); |
| } |
| execuser = ap_pstrdup(r->pool, pw->pw_name); |
| |
| if ((gr = getgrgid(r->server->server_gid)) == NULL) { |
| ap_log_rerror(APLOG_MARK, APLOG_ERR, r, |
| "getgrgid: invalid groupid %ld", |
| (long) r->server->server_gid); |
| return (pid); |
| } |
| grpname = gr->gr_name; |
| } |
| |
| if (shellcmd) { |
| execle(SUEXEC_BIN, SUEXEC_BIN, execuser, grpname, argv0, |
| NULL, env); |
| } |
| |
| else if ((!r->args) || (!r->args[0]) || strchr(r->args, '=')) { |
| execle(SUEXEC_BIN, SUEXEC_BIN, execuser, grpname, argv0, |
| NULL, env); |
| } |
| |
| else { |
| execve(SUEXEC_BIN, |
| create_argv(r->pool, SUEXEC_BIN, execuser, grpname, |
| argv0, r->args), |
| env); |
| } |
| } |
| else { |
| #endif |
| if (shellcmd) { |
| execle(SHELL_PATH, SHELL_PATH, "-c", argv0, NULL, env); |
| } |
| |
| else if ((!r->args) || (!r->args[0]) || strchr(r->args, '=')) { |
| execle(r->filename, argv0, NULL, env); |
| } |
| |
| else { |
| execve(r->filename, |
| create_argv(r->pool, NULL, NULL, NULL, argv0, r->args), |
| env); |
| } |
| #if 0 |
| } |
| #endif |
| return (pid); |
| } |
| |
| static void cgid_maint(int reason, void *data, ap_wait_t status) |
| { |
| #ifdef HAS_OTHER_CHILD |
| int *sd = data; |
| switch (reason) { |
| case OC_REASON_DEATH: |
| case OC_REASON_LOST: |
| /* stop gap to make sure everything else works. In the end, |
| * we'll just restart the cgid server. */ |
| kill(getppid(), SIGWINCH); |
| break; |
| case OC_REASON_RESTART: |
| case OC_REASON_UNREGISTER: |
| kill(*sd, SIGHUP); |
| break; |
| } |
| #endif |
| } |
| |
| static void get_req(int fd, request_rec *r, char **filename, char **argv0, char ***env) |
| { |
| int i, len, j; |
| unsigned char *data; |
| char **environ; |
| char temp[MAX_STRING_LEN]; |
| core_dir_config *temp_core; |
| void **dconf; |
| |
| r->server = ap_pcalloc(r->pool, sizeof(server_rec)); |
| |
| read(fd, &j, sizeof(int)); |
| read(fd, &len, sizeof(int)); |
| data = ap_pcalloc(r->pool, len); |
| i = read(fd, data, len); |
| |
| r->filename = ap_getword(r->pool, (const char **)&data, '\n'); |
| *argv0 = ap_getword(r->pool, (const char **)&data, '\n'); |
| |
| r->uri = ap_getword(r->pool, (const char **)&data, '\n'); |
| |
| environ = ap_pcalloc(r->pool, (j + 2) *sizeof(char *)); |
| i = 0; |
| for (i = 0; i < j; i++) { |
| environ[i] = ap_getword(r->pool, (const char **)&data, '\n'); |
| } |
| *env = environ; |
| r->args = ap_getword(r->pool, (const char **)&data, '\n'); |
| |
| read(fd, &r->server->server_uid, sizeof(uid_t)); |
| read(fd, &r->server->server_gid, sizeof(gid_t)); |
| |
| read(fd, &i, sizeof(int)); |
| |
| /* add 1, so that if i == 0, we still malloc something. */ |
| dconf = (void **)malloc(sizeof(void *) * i + 1); |
| |
| temp_core = (core_dir_config *)malloc(sizeof(core_module)); |
| #if 0 |
| #ifdef RLIMIT_CPU |
| read(fd, &j, sizeof(int)); |
| if (j) { |
| temp_core->limit_cpu = (struct rlimit *)malloc (sizeof(struct rlimit)); |
| read(fd, temp_core->limit_cpu, sizeof(struct rlimit)); |
| } |
| else { |
| temp_core->limit_cpu = NULL; |
| } |
| #endif |
| |
| #if defined (RLIMIT_DATA) || defined(RLIMIT_VMEM) || defined(RLIMIT_AS) |
| read(fd, &j, sizeof(int)); |
| if (j) { |
| temp_core->limit_mem = (struct rlimit *)malloc (sizeof(struct rlimit)); |
| read(fd, temp_core->limit_mem, sizeof(struct rlimit)); |
| } |
| else { |
| temp_core->limit_mem = NULL; |
| } |
| #endif |
| |
| #ifdef RLIMIT_NPROC |
| read(fd, &j, sizeof(int)); |
| if (j) { |
| temp_core->limit_nproc = (struct rlimit *)malloc (sizeof(struct rlimit)); |
| read(fd, temp_core->limit_nproc, sizeof(struct rlimit)); |
| } |
| else { |
| temp_core->limit_nproc = NULL; |
| } |
| #endif |
| #endif |
| dconf[i] = (void *)temp_core; |
| r->per_dir_config = dconf; |
| } |
| |
| |
| |
| static void send_req(int fd, request_rec *r, char *argv0, char **env) |
| { |
| int len; |
| int rv; |
| int i = 0; |
| char *data; |
| core_dir_config *conf = ap_get_module_config(r->per_dir_config, |
| &core_module); |
| |
| data = ap_pstrcat(r->pool, r->filename, "\n", argv0, "\n", r->uri, "\n", |
| NULL); |
| |
| for (i =0; env[i]; i++) { |
| continue; |
| } |
| |
| if (write(fd, &i, sizeof(int)) < 0) { |
| ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r, |
| "write to cgi daemon process"); |
| } |
| |
| for (i = 0; env[i]; i++) { |
| data = ap_pstrcat(r->pool, data, env[i], "\n", NULL); |
| } |
| data = ap_pstrcat(r->pool, data, r->args, NULL); |
| len = strlen(data); |
| if (write(fd, &len, sizeof(int)) < 0) { |
| ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r, |
| "write to cgi daemon process"); |
| } |
| if (write(fd, data, len) < 0) { |
| ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r, |
| "write to cgi daemon process"); |
| } |
| if (write(fd, &r->server->server_uid, sizeof(uid_t)) < 0) { |
| ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r, |
| "write to cgi daemon process"); |
| } |
| if (write(fd, &r->server->server_gid, sizeof(gid_t)) < 0) { |
| ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r, |
| "write to cgi daemon process"); |
| } |
| if (write(fd, &core_module.module_index, sizeof(int)) < 0) { |
| ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r, |
| "write to cgi daemon process"); |
| } |
| #if 0 |
| #ifdef RLIMIT_CPU |
| if (conf->limit_cpu) { |
| len = 1; |
| write(fd, &len, sizeof(int)); |
| write(fd, conf->limit_cpu, sizeof(struct rlimit)); |
| } |
| else { |
| len = 0; |
| write(fd, &len, sizeof(int)); |
| } |
| #endif |
| |
| #if defined(RLIMIT_DATA) || defined(RLIMIT_VMEM) || defined(RLIMIT_AS) |
| if (conf->limit_mem) { |
| len = 1; |
| write(fd, &len, sizeof(int)); |
| write(fd, conf->limit_mem, sizeof(struct rlimit)); |
| } |
| else { |
| len = 0; |
| write(fd, &len, sizeof(int)); |
| } |
| #endif |
| |
| #ifdef RLIMIT_NPROC |
| if (conf->limit_nproc) { |
| len = 1; |
| write(fd, &len, sizeof(int)); |
| write(fd, conf->limit_nproc, sizeof(struct rlimit)); |
| } |
| else { |
| len = 0; |
| write(fd, &len, sizeof(int)); |
| } |
| #endif |
| #endif |
| } |
| |
| static int cgid_server_child(int sd) |
| { |
| char *argv0; |
| char *filename; |
| char **env; |
| ap_context_t *p; |
| request_rec *r; |
| |
| ap_create_context(&p, pcgi); |
| r = ap_pcalloc(p, sizeof(request_rec)); |
| r->pool = p; |
| dup2(sd, STDIN_FILENO); |
| dup2(sd, STDOUT_FILENO); |
| get_req(sd, r, &filename, &argv0, &env); |
| call_exec(r, argv0, env, 0); |
| exit(-1); /* We should NEVER get here */ |
| } |
| |
| static int cgid_server(void *data) |
| { |
| struct sockaddr_un unix_addr; |
| int pid; |
| int sd, sd2, len; |
| int errfile; |
| server_rec *main_server = data; |
| cgid_server_conf *sconf = (cgid_server_conf *)ap_get_module_config( |
| main_server->module_config, &cgid_module); |
| |
| signal(SIGCHLD, SIG_IGN); |
| unlink(sconf->sockname); |
| |
| if ((sd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) { |
| ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server, |
| "Couldn't create unix domain socket"); |
| } |
| |
| memset(&unix_addr, 0, sizeof(unix_addr)); |
| unix_addr.sun_family = AF_UNIX; |
| strcpy(unix_addr.sun_path, sconf->sockname); |
| |
| if (bind(sd, (struct sockaddr *)&unix_addr, sizeof(unix_addr)) < 0) { |
| ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server, |
| "Couldn't bind unix domain socket"); |
| } |
| /* Most implementations silently enforce a value of 5 anyway. |
| * This way, it'll work the same everywhere. */ |
| if (listen(sd, 5) < 0) { |
| ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server, |
| "Couldn't listen on unix domain socket"); |
| } |
| |
| while (1) { |
| sd2 = accept(sd, (struct sockaddr *)&unix_addr, &len); |
| if (sd2 < 0) { |
| ap_log_error(APLOG_MARK, APLOG_ERR, errno, (server_rec *)data, |
| "Error accepting on cgid socket."); |
| continue; |
| } |
| |
| if ((pid = fork()) > 0) { |
| close(sd2); |
| } |
| else if (pid == 0) { |
| /* setup the STDERR here, because I have all the info |
| * for it. I'll do the STDIN and STDOUT later, but I can't |
| * do STDERR as easily. |
| */ |
| if (sconf->logname) { |
| dup2(open(sconf->logname, O_WRONLY), STDERR_FILENO); |
| } |
| else { |
| ap_get_os_file(&errfile, main_server->error_log); |
| dup2(errfile, STDERR_FILENO); |
| } |
| cgid_server_child(sd2); |
| } |
| else { |
| ap_log_error(APLOG_MARK, APLOG_ERR, errno, (server_rec *)data, |
| "Couldn't fork cgi script"); |
| } |
| } |
| return -1; |
| } |
| |
| static void cgid_init(ap_context_t *p, ap_context_t *plog, ap_context_t *ptemp, server_rec *main_server) |
| { |
| int pid; |
| int tempfd; |
| |
| cgid_server_conf *sconf = (cgid_server_conf *)ap_get_module_config( |
| main_server->module_config, &cgid_module); |
| |
| if (once_through > 0) { |
| ap_create_context(&pcgi, p); |
| tempfd = creat(sconf->sockname, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH); |
| close(tempfd); |
| |
| if ((pid = fork()) < 0) { |
| ap_log_error(APLOG_MARK, APLOG_ERR, errno, main_server, |
| "Couldn't spawn cgid daemon process"); |
| } |
| else if (pid == 0) { |
| cgid_server(main_server); |
| exit(-1); |
| } |
| #ifdef HAS_OTHER_CHILD |
| ap_register_other_child(pid, cgid_maint, &pid, -1); |
| #endif |
| } |
| else once_through++; |
| } |
| |
| static void *create_cgid_config(ap_context_t *p, server_rec *s) |
| { |
| cgid_server_conf *c = |
| (cgid_server_conf *) ap_pcalloc(p, sizeof(cgid_server_conf)); |
| |
| c->logname = NULL; |
| c->logbytes = DEFAULT_LOGBYTES; |
| c->bufbytes = DEFAULT_BUFBYTES; |
| c->sockname = ap_server_root_relative(p, DEFAULT_SOCKET); |
| c->bin = c->bout = c->berror = NULL; |
| return c; |
| } |
| |
| static void *merge_cgid_config(ap_context_t *p, void *basev, void *overridesv) |
| { |
| cgid_server_conf *base = (cgid_server_conf *) basev, *overrides = (cgid_server_conf *) overridesv; |
| |
| return overrides->logname ? overrides : base; |
| } |
| |
| static const char *set_scriptlog(cmd_parms *cmd, void *dummy, char *arg) |
| { |
| server_rec *s = cmd->server; |
| cgid_server_conf *conf = |
| (cgid_server_conf *) ap_get_module_config(s->module_config, &cgid_module); |
| |
| conf->logname = arg; |
| return NULL; |
| } |
| |
| static const char *set_scriptlog_length(cmd_parms *cmd, void *dummy, char *arg) |
| { |
| server_rec *s = cmd->server; |
| cgid_server_conf *conf = |
| (cgid_server_conf *) ap_get_module_config(s->module_config, &cgid_module); |
| |
| conf->logbytes = atol(arg); |
| return NULL; |
| } |
| |
| static const char *set_scriptlog_buffer(cmd_parms *cmd, void *dummy, char *arg) |
| { |
| server_rec *s = cmd->server; |
| cgid_server_conf *conf = |
| (cgid_server_conf *) ap_get_module_config(s->module_config, &cgid_module); |
| |
| conf->bufbytes = atoi(arg); |
| return NULL; |
| } |
| |
| static const char *set_script_socket(cmd_parms *cmd, void *dummy, char *arg) |
| { |
| server_rec *s = cmd->server; |
| cgid_server_conf *conf = |
| (cgid_server_conf *) ap_get_module_config(s->module_config, &cgid_module); |
| |
| conf->sockname = ap_server_root_relative(cmd->pool, arg); |
| return NULL; |
| } |
| |
| static const command_rec cgid_cmds[] = |
| { |
| {"ScriptLog", set_scriptlog, NULL, RSRC_CONF, TAKE1, |
| "the name of a log for script debugging info"}, |
| {"ScriptLogLength", set_scriptlog_length, NULL, RSRC_CONF, TAKE1, |
| "the maximum length (in bytes) of the script debug log"}, |
| {"ScriptLogBuffer", set_scriptlog_buffer, NULL, RSRC_CONF, TAKE1, |
| "the maximum size (in bytes) to record of a POST request"}, |
| {"Scriptsock", set_script_socket, NULL, RSRC_CONF, TAKE1, |
| "the name of the socket to use for communication with the cgi daemon."}, |
| {NULL} |
| }; |
| |
| static int log_scripterror(request_rec *r, cgid_server_conf * conf, int ret, |
| int show_errno, char *error) |
| { |
| ap_file_t *f; |
| struct stat finfo; |
| |
| ap_log_rerror(APLOG_MARK, show_errno|APLOG_ERR, errno, r, |
| "%s: %s", error, r->filename); |
| |
| if (!conf->logname || |
| ((stat(ap_server_root_relative(r->pool, conf->logname), &finfo) == 0) |
| && (finfo.st_size > conf->logbytes)) || |
| (ap_open(&f, ap_server_root_relative(r->pool, conf->logname), |
| APR_APPEND, APR_OS_DEFAULT, r->pool) != APR_SUCCESS)) { |
| return ret; |
| } |
| |
| /* "%% [Wed Jun 19 10:53:21 1996] GET /cgid-bin/printenv HTTP/1.0" */ |
| ap_fprintf(f, "%%%% [%s] %s %s%s%s %s\n", ap_get_time(), r->method, r->uri, |
| r->args ? "?" : "", r->args ? r->args : "", r->protocol); |
| /* "%% 500 /usr/local/apache/cgid-bin */ |
| ap_fprintf(f, "%%%% %d %s\n", ret, r->filename); |
| |
| ap_fprintf(f, "%%error\n%s\n", error); |
| |
| ap_close(f); |
| return ret; |
| } |
| |
| static int log_script(request_rec *r, cgid_server_conf * conf, int ret, |
| char *dbuf, const char *sbuf, BUFF *script_in, BUFF *script_err) |
| { |
| ap_array_header_t *hdrs_arr = ap_table_elts(r->headers_in); |
| ap_table_entry_t *hdrs = (ap_table_entry_t *) hdrs_arr->elts; |
| char argsbuffer[HUGE_STRING_LEN]; |
| ap_file_t *f; |
| int i; |
| struct stat finfo; |
| |
| if (!conf->logname || |
| ((stat(ap_server_root_relative(r->pool, conf->logname), &finfo) == 0) |
| && (finfo.st_size > conf->logbytes)) || |
| (ap_open(&f, ap_server_root_relative(r->pool, conf->logname), |
| APR_APPEND, APR_OS_DEFAULT, r->pool) != APR_SUCCESS)) { |
| /* Soak up script output */ |
| while (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_in) > 0) |
| continue; |
| while (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_err) > 0) |
| continue; |
| return ret; |
| } |
| |
| /* "%% [Wed Jun 19 10:53:21 1996] GET /cgid-bin/printenv HTTP/1.0" */ |
| ap_fprintf(f, "%%%% [%s] %s %s%s%s %s\n", ap_get_time(), r->method, r->uri, |
| r->args ? "?" : "", r->args ? r->args : "", r->protocol); |
| /* "%% 500 /usr/local/apache/cgid-bin" */ |
| ap_fprintf(f, "%%%% %d %s\n", ret, r->filename); |
| |
| ap_puts("%request\n", f); |
| for (i = 0; i < hdrs_arr->nelts; ++i) { |
| if (!hdrs[i].key) |
| continue; |
| ap_fprintf(f, "%s: %s\n", hdrs[i].key, hdrs[i].val); |
| } |
| if ((r->method_number == M_POST || r->method_number == M_PUT) |
| && *dbuf) { |
| ap_fprintf(f, "\n%s\n", dbuf); |
| } |
| |
| ap_puts("%response\n", f); |
| hdrs_arr = ap_table_elts(r->err_headers_out); |
| hdrs = (ap_table_entry_t *) hdrs_arr->elts; |
| |
| for (i = 0; i < hdrs_arr->nelts; ++i) { |
| if (!hdrs[i].key) |
| continue; |
| ap_fprintf(f, "%s: %s\n", hdrs[i].key, hdrs[i].val); |
| } |
| |
| if (sbuf && *sbuf) |
| ap_fprintf(f, "%s\n", sbuf); |
| |
| if (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_in) > 0) { |
| ap_puts("%stdout\n", f); |
| ap_puts(argsbuffer, f); |
| while (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_in) > 0) |
| ap_puts(argsbuffer, f); |
| ap_puts("\n", f); |
| } |
| |
| if (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_err) > 0) { |
| ap_puts("%stderr\n", f); |
| ap_puts(argsbuffer, f); |
| while (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_err) > 0) |
| ap_puts(argsbuffer, f); |
| ap_puts("\n", f); |
| } |
| |
| ap_bclose(script_in); |
| ap_bclose(script_err); |
| |
| ap_close(f); |
| return ret; |
| } |
| |
| |
| |
| /**************************************************************** |
| * |
| * Actual cgid handling... |
| */ |
| static int cgid_handler(request_rec *r) |
| { |
| int retval, nph, dbpos = 0; |
| char *argv0, *dbuf = NULL; |
| BUFF *script = NULL; |
| char argsbuffer[HUGE_STRING_LEN]; |
| void *sconf = r->server->module_config; |
| cgid_server_conf *conf = (cgid_server_conf *) ap_get_module_config(sconf, &cgid_module); |
| int is_included = !strcmp(r->protocol, "INCLUDED"); |
| int sd; |
| char **env; |
| struct sockaddr_un unix_addr; |
| ap_socket_t *tempsock = NULL; |
| int nbytes; |
| ap_iol *iol; |
| script = ap_bcreate(r->pool, B_RDWR); |
| |
| if (r->method_number == M_OPTIONS) { |
| /* 99 out of 100 cgid scripts, this is all they support */ |
| r->allowed |= (1 << M_GET); |
| r->allowed |= (1 << M_POST); |
| return DECLINED; |
| } |
| |
| if ((argv0 = strrchr(r->filename, '/')) != NULL) |
| argv0++; |
| else |
| argv0 = r->filename; |
| |
| nph = !(strncmp(argv0, "nph-", 4)); |
| |
| if ((argv0 = strrchr(r->filename, '/')) != NULL) |
| argv0++; |
| else |
| argv0 = r->filename; |
| |
| if (!(ap_allow_options(r) & OPT_EXECCGI) && !is_scriptaliased(r)) |
| return log_scripterror(r, conf, FORBIDDEN, APLOG_NOERRNO, |
| "Options ExecCGI is off in this directory"); |
| if (nph && is_included) |
| return log_scripterror(r, conf, FORBIDDEN, APLOG_NOERRNO, |
| "attempt to include NPH CGI script"); |
| |
| #if defined(OS2) || defined(WIN32) |
| /* Allow for cgid files without the .EXE extension on them under OS/2 */ |
| if (r->finfo.st_mode == 0) { |
| struct stat statbuf; |
| char *newfile; |
| |
| newfile = ap_pstrcat(r->pool, r->filename, ".EXE", NULL); |
| |
| if ((stat(newfile, &statbuf) != 0) || (!S_ISREG(statbuf.st_mode))) { |
| return log_scripterror(r, conf, NOT_FOUND, 0, |
| "script not found or unable to stat"); |
| } else { |
| r->filename = newfile; |
| } |
| } |
| #else |
| if (r->finfo.st_mode == 0) |
| return log_scripterror(r, conf, NOT_FOUND, APLOG_NOERRNO, |
| "script not found or unable to stat"); |
| #endif |
| if (S_ISDIR(r->finfo.st_mode)) |
| return log_scripterror(r, conf, FORBIDDEN, APLOG_NOERRNO, |
| "attempt to invoke directory as script"); |
| /* |
| if (!ap_suexec_enabled) { |
| if (!ap_can_exec(&r->finfo)) |
| return log_scripterror(r, conf, FORBIDDEN, APLOG_NOERRNO, |
| "file permissions deny server execution"); |
| } |
| */ |
| ap_add_common_vars(r); |
| ap_add_cgi_vars(r); |
| env = ap_create_environment(r->pool, r->subprocess_env); |
| |
| if ((sd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) { |
| return log_scripterror(r, conf, NOT_FOUND, 0, |
| "unable to create socket to cgi daemon"); |
| } |
| memset(&unix_addr, 0, sizeof(unix_addr)); |
| unix_addr.sun_family = AF_UNIX; |
| strcpy(unix_addr.sun_path, conf->sockname); |
| |
| if (connect(sd, (struct sockaddr *)&unix_addr, sizeof(unix_addr)) < 0) { |
| return log_scripterror(r, conf, NOT_FOUND, 0, |
| "unable to connect to cgi daemon"); |
| } |
| |
| send_req(sd, r, argv0, env); |
| |
| ap_put_os_sock(&tempsock, &sd, pcgi); |
| |
| iol = unix_attach_socket(tempsock); |
| |
| ap_bpush_iol(script, iol); |
| |
| if ((retval = ap_setup_client_block(r, REQUEST_CHUNKED_ERROR))) |
| return retval; |
| |
| if ((argv0 = strrchr(r->filename, '/')) != NULL) |
| argv0++; |
| else |
| argv0 = r->filename; |
| |
| /* Transfer any put/post args, CERN style... |
| * Note that we already ignore SIGPIPE in the core server. |
| */ |
| |
| if (ap_should_client_block(r)) { |
| int dbsize, len_read; |
| |
| if (conf->logname) { |
| dbuf = ap_pcalloc(r->pool, conf->bufbytes + 1); |
| dbpos = 0; |
| } |
| |
| |
| |
| while ((len_read = |
| ap_get_client_block(r, argsbuffer, HUGE_STRING_LEN)) > 0) { |
| if (conf->logname) { |
| if ((dbpos + len_read) > conf->bufbytes) { |
| dbsize = conf->bufbytes - dbpos; |
| } |
| else { |
| dbsize = len_read; |
| } |
| memcpy(dbuf + dbpos, argsbuffer, dbsize); |
| dbpos += dbsize; |
| } |
| ap_bwrite(script, argsbuffer, len_read, &nbytes); |
| if (nbytes < len_read) { |
| /* silly script stopped reading, soak up remaining message */ |
| while (ap_get_client_block(r, argsbuffer, HUGE_STRING_LEN) > 0) { |
| /* dump it */ |
| } |
| break; |
| } |
| } |
| |
| ap_bflush(script); |
| |
| } |
| |
| /* Handle script return... */ |
| if (script && !nph) { |
| const char *location; |
| char sbuf[MAX_STRING_LEN]; |
| int ret; |
| |
| if ((ret = ap_scan_script_header_err_buff(r, script, sbuf))) { |
| return log_script(r, conf, ret, dbuf, sbuf, script, NULL); |
| } |
| |
| #ifdef CHARSET_EBCDIC |
| /* Now check the Content-Type to decide if conversion is needed */ |
| ap_checkconv(r); |
| #endif /*CHARSET_EBCDIC*/ |
| |
| location = ap_table_get(r->headers_out, "Location"); |
| |
| if (location && location[0] == '/' && r->status == 200) { |
| |
| /* Soak up all the script output */ |
| while (ap_bgets(argsbuffer, HUGE_STRING_LEN, script) > 0) { |
| continue; |
| } |
| /* This redirect needs to be a GET no matter what the original |
| * method was. |
| */ |
| r->method = ap_pstrdup(r->pool, "GET"); |
| r->method_number = M_GET; |
| |
| /* We already read the message body (if any), so don't allow |
| * the redirected request to think it has one. We can ignore |
| * Transfer-Encoding, since we used REQUEST_CHUNKED_ERROR. |
| */ |
| ap_table_unset(r->headers_in, "Content-Length"); |
| |
| ap_internal_redirect_handler(location, r); |
| return OK; |
| } |
| else if (location && r->status == 200) { |
| /* XX Note that if a script wants to produce its own Redirect |
| * body, it now has to explicitly *say* "Status: 302" |
| */ |
| return REDIRECT; |
| } |
| |
| ap_send_http_header(r); |
| if (!r->header_only) { |
| ap_send_fb(script, r); |
| } |
| ap_bclose(script); |
| } |
| |
| if (script && nph) { |
| ap_send_fb(script, r); |
| } |
| |
| ap_destroy_pool(pcgi); |
| |
| return OK; /* NOT r->status, even if it has changed. */ |
| } |
| |
| static const handler_rec cgid_handlers[] = |
| { |
| {CGI_MAGIC_TYPE, cgid_handler}, |
| {"cgi-script", cgid_handler}, |
| {NULL} |
| }; |
| |
| static void register_hook(void) |
| { |
| ap_hook_post_config(cgid_init, NULL, NULL, HOOK_MIDDLE); |
| } |
| |
| module MODULE_VAR_EXPORT cgid_module = { |
| STANDARD20_MODULE_STUFF, |
| NULL, /* dir config creater */ |
| NULL, /* dir merger --- default is to override */ |
| create_cgid_config, /* server config */ |
| merge_cgid_config, /* merge server config */ |
| cgid_cmds, /* command table */ |
| cgid_handlers, /* handlers */ |
| register_hook /* register_handlers */ |
| }; |
| |
