1 // Copyright (c) 1996-2021 by the citadel.org team
3 // This program is open source software. You can redistribute it and/or
4 // modify it under the terms of the GNU General Public License version 3.
6 // This program is distributed in the hope that it will be useful,
7 // but WITHOUT ANY WARRANTY; without even the implied warranty of
8 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
9 // GNU General Public License for more details.
12 #include "webserver.h"
13 #include "modules_init.h"
15 extern int msock; /* master listening socket */
16 extern char static_icon_dir[PATH_MAX]; /* where should we find our mime icons */
17 int is_https = 0; /* Nonzero if I am an HTTPS service */
18 int follow_xff = 0; /* Follow X-Forwarded-For: header? */
20 char *default_landing_page = NULL;
21 extern pthread_mutex_t SessionListMutex;
23 extern void *housekeeping_loop(void);
24 extern int webcit_tcp_server(char *ip_addr, int port_number, int queue_len);
25 extern int webcit_uds_server(char *sockpath, int queue_len);
26 extern void graceful_shutdown_watcher(int signum);
27 extern void graceful_shutdown(int signum);
28 extern void start_daemon(char *pid_file);
29 extern void webcit_calc_dirs_n_files(int relh, const char *basedir, int home, char *webcitdir, char *relhome);
30 extern void worker_entry(void);
31 extern void drop_root(uid_t UID);
33 char socket_dir[PATH_MAX]; /* where to talk to our citadel server */
34 char *server_cookie = NULL; /* our Cookie connection to the client */
35 int http_port = PORT_NUM; /* Port to listen on */
36 char *ctdlhost = DEFAULT_HOST; /* Host name or IP address of Citadel server */
37 char *ctdlport = DEFAULT_PORT; /* Port number of Citadel server */
38 int running_as_daemon = 0; /* should we deamonize on startup? */
40 /* #define DBG_PRINNT_HOOKS_AT_START */
41 #ifdef DBG_PRINNT_HOOKS_AT_START
42 extern HashList *HandlerHash;
43 const char foobuf[32];
44 const char *nix(void *vptr) {snprintf(foobuf, 32, "%0x", (long) vptr); return foobuf;}
47 extern int dbg_analyze_msg;
48 extern int dbg_backtrace_template_errors;
49 extern int DumpTemplateI18NStrings;
50 extern StrBuf *I18nDump;
51 void InitTemplateCache(void);
52 extern int LoadTemplates;
54 void LoadMimeBlacklist(void);
57 * Here's where it all begins.
59 int main(int argc, char **argv) {
61 pthread_t SessThread; /* Thread descriptor */
62 pthread_attr_t attr; /* Thread attributes */
63 int a; /* General-purpose variable */
64 char ip_addr[256]="*";
67 char relhome[PATH_MAX]="";
68 char webcitdir[PATH_MAX] = DATADIR;
71 const char *basedir = NULL;
72 char uds_listen_path[PATH_MAX]; /* listen on a unix domain socket? */
73 const char *I18nDumpFile = NULL;
74 int max_log_level = LOG_INFO;
76 WildFireInitBacktrace(argv[0], 2);
80 #ifdef DBG_PRINNT_HOOKS_AT_START
81 /* dbg_PrintHash(HandlerHash, nix, NULL);*/
84 /* Ensure that we are linked to the correct version of libcitadel */
85 if (libcitadel_version_number() < LIBCITADEL_VERSION_NUMBER) {
86 fprintf(stderr, " You are running libcitadel version %d\n", libcitadel_version_number() );
87 fprintf(stderr, "WebCit was compiled against version %d\n", LIBCITADEL_VERSION_NUMBER );
91 strcpy(uds_listen_path, "");
93 /* Parse command line */
95 while ((a = getopt(argc, argv, "u:h:i:p:t:T:B:x:g:dD:G:cfsS:Z:v:")) != EOF)
97 while ((a = getopt(argc, argv, "u:h:i:p:t:T:B:x:g:dD:G:cfZ:v:")) != EOF)
104 hdir = strdup(optarg);
107 safestrncpy(webcitdir, hdir, sizeof webcitdir);
110 safestrncpy(relhome, relhome, sizeof relhome);
112 /* free(hdir); TODO: SHOULD WE DO THIS? */
116 running_as_daemon = 1;
119 pidfile = strdup(optarg);
120 running_as_daemon = 1;
123 default_landing_page = strdup(optarg);
125 case 'B': /* deprecated */
128 safestrncpy(ip_addr, optarg, sizeof ip_addr);
131 http_port = atoi(optarg);
132 if (http_port == 0) {
133 safestrncpy(uds_listen_path, optarg, sizeof uds_listen_path);
137 /* no longer used, but ignored so old scripts don't break */
140 LoadTemplates = atoi(optarg);
141 dbg_analyze_msg = (LoadTemplates & (1<<1)) != 0;
142 dbg_backtrace_template_errors = (LoadTemplates & (1<<2)) != 0;
148 max_log_level = atoi(optarg);
154 server_cookie = malloc(256);
155 if (server_cookie != NULL) {
156 safestrncpy(server_cookie, "Set-cookie: wcserver=", 256);
157 if (gethostname (&server_cookie[strlen(server_cookie)], 200) != 0) {
158 syslog(LOG_INFO, "gethostname: %s", strerror(errno));
169 ssl_cipher_list = strdup(optarg);
173 DumpTemplateI18NStrings = 1;
174 I18nDump = NewStrBufPlain(HKEY("int templatestrings(void)\n{\n"));
175 I18nDumpFile = optarg;
181 fprintf(stderr, "usage:\nwebcit "
182 "[-i ip_addr] [-p http_port] "
184 "[-T Templatedebuglevel] "
185 "[-d] [-Z] [-G i18ndumpfile] "
186 "[-u uid] [-h homedirectory] "
187 "[-D daemonizepid] [-v] "
188 "[-g defaultlandingpage] "
190 "[-s] [-S cipher_suites]"
192 "[remotehost [remoteport]]\n");
196 /* Start the logger */
197 setlogmask(LOG_UPTO(max_log_level));
199 ( running_as_daemon ? (LOG_PID) : (LOG_PID | LOG_PERROR) ),
204 ctdlhost = argv[optind];
206 ctdlport = argv[optind];
209 /* daemonize, if we were asked to */
210 if (!DumpTemplateI18NStrings && running_as_daemon) {
211 start_daemon(pidfile);
214 signal(SIGINT, graceful_shutdown);
215 signal(SIGHUP, graceful_shutdown);
218 webcit_calc_dirs_n_files(relh, basedir, home, webcitdir, relhome);
220 LoadIconDir(static_icon_dir);
222 /* Tell 'em who's in da house */
223 syslog(LOG_NOTICE, "%s", PACKAGE_STRING);
224 syslog(LOG_NOTICE, "Copyright (C) 1996-2020 by the citadel.org team");
225 syslog(LOG_NOTICE, " ");
226 syslog(LOG_NOTICE, "This program is open source software: you can redistribute it and/or");
227 syslog(LOG_NOTICE, "modify it under the terms of the GNU General Public License, version 3.");
228 syslog(LOG_NOTICE, " ");
229 syslog(LOG_NOTICE, "This program is distributed in the hope that it will be useful,");
230 syslog(LOG_NOTICE, "but WITHOUT ANY WARRANTY; without even the implied warranty of");
231 syslog(LOG_NOTICE, "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the");
232 syslog(LOG_NOTICE, "GNU General Public License for more details.");
233 syslog(LOG_NOTICE, " ");
235 /* run from the webcit home directory */
236 if (chdir(webcitdir) != 0) {
237 syslog(LOG_ERR, "webcit: %s: %m", webcitdir);
241 /* initialize various subsystems */
242 initialise_modules();
243 initialise2_modules();
245 if (DumpTemplateI18NStrings) {
247 StrBufAppendBufPlain(I18nDump, HKEY("}\n"), 0);
248 if (StrLength(I18nDump) < 50) {
249 syslog(LOG_INFO, "*******************************************************************\n");
250 syslog(LOG_INFO, "* No strings found in templates! Are you sure they're there? *\n");
251 syslog(LOG_INFO, "*******************************************************************\n");
254 fd = fopen(I18nDumpFile, "w");
256 syslog(LOG_INFO, "***********************************************\n");
257 syslog(LOG_INFO, "* unable to open I18N dumpfile [%s] *\n", I18nDumpFile);
258 syslog(LOG_INFO, "***********************************************\n");
261 fwrite(ChrPtr(I18nDump), 1, StrLength(I18nDump), fd);
266 /* Tell libical to return an error instead of aborting if it sees badly formed iCalendar data. */
268 #ifdef LIBICAL_ICAL_EXPORT // cheap and sleazy way to detect libical >=2.0
269 icalerror_set_errors_are_fatal(0);
271 icalerror_errors_are_fatal = 0;
274 /* Use our own prefix on tzid's generated from system tzdata */
275 icaltimezone_set_tzid_prefix("/citadel.org/");
278 * Set up a place to put thread-specific data.
279 * We only need a single pointer per thread - it points to the
280 * wcsession struct to which the thread is currently bound.
282 if (pthread_key_create(&MyConKey, NULL) != 0) {
283 syslog(LOG_ERR, "Can't create TSD key: %s", strerror(errno));
285 InitialiseSemaphores();
288 * Set up a place to put thread-specific SSL data.
289 * We don't stick this in the wcsession struct because SSL starts
290 * up before the session is bound, and it gets torn down between
294 if (pthread_key_create(&ThreadSSL, NULL) != 0) {
295 syslog(LOG_ERR, "Can't create TSD key: %s", strerror(errno));
300 * Bind the server to our favorite port.
301 * There is no need to check for errors, because webcit_tcp_server()
302 * exits if it doesn't succeed.
305 if (!IsEmptyStr(uds_listen_path)) {
306 syslog(LOG_DEBUG, "Attempting to create listener socket at %s...", uds_listen_path);
307 msock = webcit_uds_server(uds_listen_path, LISTEN_QUEUE_LENGTH);
310 syslog(LOG_DEBUG, "Attempting to bind to port %d...", http_port);
311 msock = webcit_tcp_server(ip_addr, http_port, LISTEN_QUEUE_LENGTH);
319 syslog(LOG_INFO, "Listening on socket %d", msock);
320 signal(SIGPIPE, SIG_IGN);
322 pthread_mutex_init(&SessionListMutex, NULL);
325 * Start up the housekeeping thread
327 pthread_attr_init(&attr);
328 pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
329 pthread_create(&SessThread, &attr, (void *(*)(void *)) housekeeping_loop, NULL);
332 * If this is an HTTPS server, fire up SSL
341 /* Become a worker thread. More worker threads will be spawned as they are needed. */
343 ShutDownLibCitadel();