2 * This contains a simple multithreaded TCP server manager. It sits around
3 * waiting on the specified port for incoming HTTP connections. When a
4 * connection is established, it calls context_loop() from context_loop.c.
6 * Copyright (c) 1996-2011 by the citadel.org developers.
7 * This program is released under the terms of the GNU General Public License v3.
12 #include "webserver.h"
14 #include "modules_init.h"
16 int vsnprintf(char *buf, size_t max, const char *fmt, va_list argp);
20 extern int msock; /* master listening socket */
21 extern int verbosity; /* Logging level */
22 extern char static_icon_dir[PATH_MAX]; /* where should we find our mime icons */
23 int is_https = 0; /* Nonzero if I am an HTTPS service */
24 int follow_xff = 0; /* Follow X-Forwarded-For: header? */
26 char *default_landing_page = NULL; /* FIXME we need to populate this somehow */
27 extern pthread_mutex_t SessionListMutex;
28 extern pthread_key_t MyConKey;
30 extern void *housekeeping_loop(void);
31 extern int webcit_tcp_server(char *ip_addr, int port_number, int queue_len);
32 extern int webcit_uds_server(char *sockpath, int queue_len);
33 extern void graceful_shutdown_watcher(int signum);
34 extern void graceful_shutdown(int signum);
35 extern void start_daemon(char *pid_file);
36 extern void webcit_calc_dirs_n_files(int relh, const char *basedir, int home, char *webcitdir, char *relhome);
37 extern void worker_entry(void);
38 extern void drop_root(uid_t UID);
40 char socket_dir[PATH_MAX]; /* where to talk to our citadel server */
41 char *server_cookie = NULL; /* our Cookie connection to the client */
42 int http_port = PORT_NUM; /* Port to listen on */
43 char *ctdlhost = DEFAULT_HOST; /* Host name or IP address of Citadel server */
44 char *ctdlport = DEFAULT_PORT; /* Port number of Citadel server */
45 int setup_wizard = 0; /* should we run the setup wizard? */
46 char wizard_filename[PATH_MAX]; /* location of file containing the last webcit version against which we ran setup wizard */
47 int running_as_daemon = 0; /* should we deamonize on startup? */
50 /* #define DBG_PRINNT_HOOKS_AT_START */
51 #ifdef DBG_PRINNT_HOOKS_AT_START
52 extern HashList *HandlerHash;
53 const char foobuf[32];
54 const char *nix(void *vptr) {snprintf(foobuf, 32, "%0x", (long) vptr); return foobuf;}
56 extern int dbg_analyze_msg;
57 extern int dbg_backtrace_template_errors;
58 extern int DumpTemplateI18NStrings;
59 extern StrBuf *I18nDump;
60 void InitTemplateCache(void);
61 extern int LoadTemplates;
68 * Here's where it all begins.
70 int main(int argc, char **argv)
73 size_t basesize = 2; /* how big should strbufs be on creation? */
74 pthread_t SessThread; /* Thread descriptor */
75 pthread_attr_t attr; /* Thread attributes */
76 int a; /* General-purpose variable */
77 char tracefile[PATH_MAX];
78 char ip_addr[256]="*";
81 char relhome[PATH_MAX]="";
82 char webcitdir[PATH_MAX] = DATADIR;
85 const char *basedir = NULL;
86 char uds_listen_path[PATH_MAX]; /* listen on a unix domain socket? */
87 const char *I18nDumpFile = NULL;
91 WildFireInitBacktrace(argv[0], 2);
95 #ifdef DBG_PRINNT_HOOKS_AT_START
96 /* dbg_PrintHash(HandlerHash, nix, NULL);*/
99 /* Ensure that we are linked to the correct version of libcitadel */
100 if (libcitadel_version_number() < LIBCITADEL_VERSION_NUMBER) {
101 fprintf(stderr, " You are running libcitadel version %d.%02d\n",
102 (libcitadel_version_number() / 100), (libcitadel_version_number() % 100));
103 fprintf(stderr, "WebCit was compiled against version %d.%02d\n",
104 (LIBCITADEL_VERSION_NUMBER / 100), (LIBCITADEL_VERSION_NUMBER % 100));
108 strcpy(uds_listen_path, "");
110 /* Parse command line */
112 while ((a = getopt(argc, argv, "u:h:i:p:t:T:B:x:g:dD:G:cfsS:Z")) != EOF)
114 while ((a = getopt(argc, argv, "u:h:i:p:t:T:B:x:g:dD:G:cfZ")) != EOF)
121 hdir = strdup(optarg);
124 safestrncpy(webcitdir, hdir, sizeof webcitdir);
127 safestrncpy(relhome, relhome, sizeof relhome);
129 /* free(hdir); TODO: SHOULD WE DO THIS? */
133 running_as_daemon = 1;
136 pidfile = strdup(optarg);
137 running_as_daemon = 1;
140 default_landing_page = strdup(optarg);
142 case 'B': /* Basesize */
143 basesize = atoi(optarg);
145 StartLibCitadel(basesize);
148 safestrncpy(ip_addr, optarg, sizeof ip_addr);
151 http_port = atoi(optarg);
152 if (http_port == 0) {
153 safestrncpy(uds_listen_path, optarg, sizeof uds_listen_path);
157 safestrncpy(tracefile, optarg, sizeof tracefile);
158 rvfp = freopen(tracefile, "w", stdout);
159 rvfp = freopen(tracefile, "w", stderr);
160 rvfp = freopen(tracefile, "r", stdin);
163 LoadTemplates = atoi(optarg);
164 dbg_analyze_msg = (LoadTemplates && (1<<1)) != 0;
165 dbg_backtrace_template_errors = (LoadTemplates && (1<<2)) != 0;
171 verbosity = atoi(optarg);
177 server_cookie = malloc(256);
178 if (server_cookie != NULL) {
179 safestrncpy(server_cookie,
180 "Set-cookie: wcserver=",
183 (&server_cookie[strlen(server_cookie)],
185 syslog(2, "gethostname: %s", strerror(errno));
196 ssl_cipher_list = strdup(optarg);
200 DumpTemplateI18NStrings = 1;
201 I18nDump = NewStrBufPlain(HKEY("int templatestrings(void)\n{\n"));
202 I18nDumpFile = optarg;
205 fprintf(stderr, "usage: webcit "
206 "[-i ip_addr] [-p http_port] "
207 "[-t tracefile] [-c] [-f] "
208 "[-T Templatedebuglevel] "
209 "[-d] [-Z] [-G i18ndumpfile] "
211 "[-s] [-S cipher_suites]"
213 "[remotehost [remoteport]]\n");
217 /* Start the logger */
219 ( running_as_daemon ? (LOG_PID) : (LOG_PID | LOG_PERROR) ),
224 ctdlhost = argv[optind];
226 ctdlport = argv[optind];
229 /* daemonize, if we were asked to */
230 if (!DumpTemplateI18NStrings && running_as_daemon) {
231 start_daemon(pidfile);
234 signal(SIGINT, graceful_shutdown);
235 signal(SIGHUP, graceful_shutdown);
238 webcit_calc_dirs_n_files(relh, basedir, home, webcitdir, relhome);
239 LoadIconDir(static_icon_dir);
241 /* Tell 'em who's in da house */
242 syslog(1, "%s", PACKAGE_STRING);
243 syslog(1, "Copyright (C) 1996-2011 by the citadel.org team");
245 syslog(1, "This program is open source software: you can redistribute it and/or");
246 syslog(1, "modify it under the terms of the GNU General Public License as published");
247 syslog(1, "by the Free Software Foundation, either version 3 of the License, or");
248 syslog(1, "(at your option) any later version.");
250 syslog(1, "This program is distributed in the hope that it will be useful,");
251 syslog(1, "but WITHOUT ANY WARRANTY; without even the implied warranty of");
252 syslog(1, "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the");
253 syslog(1, "GNU General Public License for more details.");
255 syslog(1, "You should have received a copy of the GNU General Public License");
256 syslog(1, "along with this program. If not, see <http://www.gnu.org/licenses/>.");
260 /* initialize various subsystems */
262 initialise_modules();
264 if (DumpTemplateI18NStrings) {
266 StrBufAppendBufPlain(I18nDump, HKEY("}\n"), 0);
267 if (StrLength(I18nDump) < 50) {
268 syslog(1, "********************************************************************************\n");
269 syslog(1, "* No strings found in templates! Are you sure they're there? *\n");
270 syslog(1, "********************************************************************************\n");
273 fd = fopen(I18nDumpFile, "w");
275 syslog(1, "********************************************************************************\n");
276 syslog(1, "* unable to open I18N dumpfile [%s] *\n", I18nDumpFile);
277 syslog(1, "********************************************************************************\n");
280 rv = fwrite(ChrPtr(I18nDump), 1, StrLength(I18nDump), fd);
286 /* Tell libical to return an error instead of aborting if it sees badly formed iCalendar data. */
287 icalerror_errors_are_fatal = 0;
289 /* Use our own prefix on tzid's generated from system tzdata */
290 icaltimezone_set_tzid_prefix("/citadel.org/");
293 * Set up a place to put thread-specific data.
294 * We only need a single pointer per thread - it points to the
295 * wcsession struct to which the thread is currently bound.
297 if (pthread_key_create(&MyConKey, NULL) != 0) {
298 syslog(1, "Can't create TSD key: %s\n", strerror(errno));
300 InitialiseSemaphores ();
303 * Set up a place to put thread-specific SSL data.
304 * We don't stick this in the wcsession struct because SSL starts
305 * up before the session is bound, and it gets torn down between
309 if (pthread_key_create(&ThreadSSL, NULL) != 0) {
310 syslog(1, "Can't create TSD key: %s\n", strerror(errno));
315 * Bind the server to our favorite port.
316 * There is no need to check for errors, because webcit_tcp_server()
317 * exits if it doesn't succeed.
320 if (!IsEmptyStr(uds_listen_path)) {
321 syslog(2, "Attempting to create listener socket at %s...\n", uds_listen_path);
322 msock = webcit_uds_server(uds_listen_path, LISTEN_QUEUE_LENGTH);
325 syslog(2, "Attempting to bind to port %d...\n", http_port);
326 msock = webcit_tcp_server(ip_addr, http_port, LISTEN_QUEUE_LENGTH);
334 syslog(2, "Listening on socket %d\n", msock);
335 signal(SIGPIPE, SIG_IGN);
337 pthread_mutex_init(&SessionListMutex, NULL);
340 * Start up the housekeeping thread
342 pthread_attr_init(&attr);
343 pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
344 pthread_create(&SessThread, &attr,
345 (void *(*)(void *)) housekeeping_loop, NULL);
349 * If this is an HTTPS server, fire up SSL
358 /* Become a worker thread. More worker threads will be spawned as they are needed. */
360 ShutDownLibCitadel();