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) 1996-2010 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 */
24 int is_https = 0; /* Nonzero if I am an HTTPS service */
25 int follow_xff = 0; /* Follow X-Forwarded-For: header */
26 int home_specified = 0; /* did the user specify a homedir? */
28 extern pthread_mutex_t SessionListMutex;
29 extern pthread_key_t MyConKey;
31 extern void *housekeeping_loop(void);
32 extern int webcit_tcp_server(char *ip_addr, int port_number, int queue_len);
33 extern int webcit_uds_server(char *sockpath, int queue_len);
34 extern void graceful_shutdown_watcher(int signum);
35 extern void graceful_shutdown(int signum);
36 extern void start_daemon(char *pid_file);
37 extern void webcit_calc_dirs_n_files(int relh, const char *basedir, int home, char *webcitdir, char *relhome);
39 extern void drop_root(uid_t UID);
41 char socket_dir[PATH_MAX]; /* where to talk to our citadel server */
43 char *server_cookie = NULL; /* our Cookie connection to the client */
44 int http_port = PORT_NUM; /* Port to listen on */
45 char *ctdlhost = DEFAULT_HOST; /* our name */
46 char *ctdlport = DEFAULT_PORT; /* our Port */
47 int setup_wizard = 0; /* should we run the setup wizard? \todo */
48 char wizard_filename[PATH_MAX]; /* where's the setup wizard? */
49 int running_as_daemon = 0; /* should we deamonize on startup? */
53 /* #define DBG_PRINNT_HOOKS_AT_START */
54 #ifdef DBG_PRINNT_HOOKS_AT_START
55 extern HashList *HandlerHash;
56 const char foobuf[32];
57 const char *nix(void *vptr) {snprintf(foobuf, 32, "%0x", (long) vptr); return foobuf;}
59 extern int dbg_analyze_msg;
60 extern int dbg_backtrace_template_errors;
61 extern int DumpTemplateI18NStrings;
62 extern StrBuf *I18nDump;
63 void InitTemplateCache(void);
64 extern int LoadTemplates;
70 * Here's where it all begins.
72 int main(int argc, char **argv)
75 size_t basesize = 2; /* how big should strbufs be on creation? */
76 pthread_t SessThread; /* Thread descriptor */
77 pthread_attr_t attr; /* Thread attributes */
78 int a; /* General-purpose variable */
79 char tracefile[PATH_MAX];
80 char ip_addr[256]="*";
84 char relhome[PATH_MAX]="";
85 char webcitdir[PATH_MAX] = DATADIR;
88 const char *basedir = NULL;
89 char uds_listen_path[PATH_MAX]; /* listen on a unix domain socket? */
90 const char *I18nDumpFile = NULL;
94 WildFireInitBacktrace(argv[0], 2);
98 #ifdef DBG_PRINNT_HOOKS_AT_START
99 /* dbg_PrintHash(HandlerHash, nix, NULL);*/
102 /* Ensure that we are linked to the correct version of libcitadel */
103 if (libcitadel_version_number() < LIBCITADEL_VERSION_NUMBER) {
104 fprintf(stderr, " You are running libcitadel version %d.%02d\n",
105 (libcitadel_version_number() / 100), (libcitadel_version_number() % 100));
106 fprintf(stderr, "WebCit was compiled against version %d.%02d\n",
107 (LIBCITADEL_VERSION_NUMBER / 100), (LIBCITADEL_VERSION_NUMBER % 100));
111 strcpy(uds_listen_path, "");
113 /* Parse command line */
115 while ((a = getopt(argc, argv, "R:u:h:i:p:t:T:B:x:dD:G:cfsS:Z")) != EOF)
117 while ((a = getopt(argc, argv, "R:u:h:i:p:t:T:B:x:dD:G:cfZ")) != EOF)
124 hdir = strdup(optarg);
127 safestrncpy(webcitdir, hdir, sizeof webcitdir);
130 safestrncpy(relhome, relhome, sizeof relhome);
132 /* free(hdir); TODO: SHOULD WE DO THIS? */
137 running_as_daemon = 1;
140 pidfile = strdup(optarg);
141 running_as_daemon = 1;
143 case 'B': /* Basesize */
144 basesize = atoi(optarg);
146 StartLibCitadel(basesize);
149 safestrncpy(ip_addr, optarg, sizeof ip_addr);
152 http_port = atoi(optarg);
153 if (http_port == 0) {
154 safestrncpy(uds_listen_path, optarg, sizeof uds_listen_path);
158 safestrncpy(tracefile, optarg, sizeof tracefile);
159 rvfp = freopen(tracefile, "w", stdout);
160 rvfp = freopen(tracefile, "w", stderr);
161 rvfp = freopen(tracefile, "r", stdin);
164 LoadTemplates = atoi(optarg);
165 dbg_analyze_msg = (LoadTemplates && (1<<1)) != 0;
166 dbg_backtrace_template_errors = (LoadTemplates && (1<<2)) != 0;
172 verbosity = atoi(optarg);
178 server_cookie = malloc(256);
179 if (server_cookie != NULL) {
180 safestrncpy(server_cookie,
181 "Set-cookie: wcserver=",
184 (&server_cookie[strlen(server_cookie)],
186 lprintf(2, "gethostname: %s\n",
198 ssl_cipher_list = strdup(optarg);
202 DumpTemplateI18NStrings = 1;
203 I18nDump = NewStrBufPlain(HKEY("int templatestrings(void)\n{\n"));
204 I18nDumpFile = optarg;
207 MaxRead = atol(optarg);
210 fprintf(stderr, "usage: webcit "
211 "[-i ip_addr] [-p http_port] "
212 "[-t tracefile] [-c] [-f] "
213 "[-T Templatedebuglevel] "
214 "[-d] [-Z] [-G i18ndumpfile] "
216 "[-s] [-S cipher_suites]"
218 "[remotehost [remoteport]]\n");
223 ctdlhost = argv[optind];
225 ctdlport = argv[optind];
228 /* daemonize, if we were asked to */
229 if (!DumpTemplateI18NStrings && running_as_daemon) {
230 start_daemon(pidfile);
233 signal(SIGINT, graceful_shutdown);
234 signal(SIGHUP, graceful_shutdown);
237 webcit_calc_dirs_n_files(relh, basedir, home, webcitdir, relhome);
238 LoadIconDir(static_icon_dir);
240 /* Tell 'em who's in da house */
241 lprintf(1, PACKAGE_STRING "\n");
242 lprintf(1, "Copyright (C) 1996-2010 by the Citadel development team.\n"
243 "This software is distributed under the terms of the "
244 "GNU General Public License.\n\n"
248 /* initialize the International Bright Young Thing */
250 initialise_modules();
253 if (DumpTemplateI18NStrings) {
255 StrBufAppendBufPlain(I18nDump, HKEY("}\n"), 0);
256 if (StrLength(I18nDump) < 50) {
257 lprintf(1, "********************************************************************************\n");
258 lprintf(1, "* No strings found in templates! Are you sure they're there? *\n");
259 lprintf(1, "********************************************************************************\n");
262 fd = fopen(I18nDumpFile, "w");
264 lprintf(1, "********************************************************************************\n");
265 lprintf(1, "* unable to open I18N dumpfile [%s] *\n", I18nDumpFile);
266 lprintf(1, "********************************************************************************\n");
269 rv = fwrite(ChrPtr(I18nDump), 1, StrLength(I18nDump), fd);
275 /* Tell libical to return an error instead of aborting if it sees badly formed iCalendar data. */
276 icalerror_errors_are_fatal = 0;
278 /* Use our own prefix on tzid's generated from system tzdata */
279 icaltimezone_set_tzid_prefix("/citadel.org/");
282 * Set up a place to put thread-specific data.
283 * We only need a single pointer per thread - it points to the
284 * wcsession struct to which the thread is currently bound.
286 if (pthread_key_create(&MyConKey, NULL) != 0) {
287 lprintf(1, "Can't create TSD key: %s\n", strerror(errno));
289 InitialiseSemaphores ();
292 * Set up a place to put thread-specific SSL data.
293 * We don't stick this in the wcsession struct because SSL starts
294 * up before the session is bound, and it gets torn down between
298 if (pthread_key_create(&ThreadSSL, NULL) != 0) {
299 lprintf(1, "Can't create TSD key: %s\n", strerror(errno));
304 * Bind the server to our favorite port.
305 * There is no need to check for errors, because webcit_tcp_server()
306 * exits if it doesn't succeed.
309 if (!IsEmptyStr(uds_listen_path)) {
310 lprintf(2, "Attempting to create listener socket at %s...\n", uds_listen_path);
311 msock = webcit_uds_server(uds_listen_path, LISTEN_QUEUE_LENGTH);
314 lprintf(2, "Attempting to bind to port %d...\n", http_port);
315 msock = webcit_tcp_server(ip_addr, http_port, LISTEN_QUEUE_LENGTH);
323 lprintf(2, "Listening on socket %d\n", msock);
324 signal(SIGPIPE, SIG_IGN);
326 pthread_mutex_init(&SessionListMutex, NULL);
329 * Start up the housekeeping thread
331 pthread_attr_init(&attr);
332 pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
333 pthread_create(&SessThread, &attr,
334 (void *(*)(void *)) housekeeping_loop, NULL);
338 * If this is an HTTPS server, fire up SSL
347 /* Become a worker thread. More worker threads will be spawned as they are needed. */
349 ShutDownLibCitadel ();