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 */
25 int home_specified = 0; /* did the user specify a homedir? */
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);
38 extern void drop_root(uid_t UID);
40 char socket_dir[PATH_MAX]; /* where to talk to our citadel server */
42 char *server_cookie = NULL; /* our Cookie connection to the client */
43 int http_port = PORT_NUM; /* Port to listen on */
44 char *ctdlhost = DEFAULT_HOST; /* our name */
45 char *ctdlport = DEFAULT_PORT; /* our Port */
46 int setup_wizard = 0; /* should we run the setup wizard? \todo */
47 char wizard_filename[PATH_MAX]; /* where's the setup wizard? */
48 int running_as_daemon = 0; /* should we deamonize on startup? */
52 /* #define DBG_PRINNT_HOOKS_AT_START */
53 #ifdef DBG_PRINNT_HOOKS_AT_START
54 extern HashList *HandlerHash;
55 const char foobuf[32];
56 const char *nix(void *vptr) {snprintf(foobuf, 32, "%0x", (long) vptr); return foobuf;}
58 extern int dbg_analyze_msg;
59 extern int dbg_backtrace_template_errors;
60 extern int DumpTemplateI18NStrings;
61 extern StrBuf *I18nDump;
62 void InitTemplateCache(void);
63 extern int LoadTemplates;
69 * Here's where it all begins.
71 int main(int argc, char **argv)
74 size_t basesize = 2; /* how big should strbufs be on creation? */
75 pthread_t SessThread; /* Thread descriptor */
76 pthread_attr_t attr; /* Thread attributes */
77 int a; /* General-purpose variable */
78 char tracefile[PATH_MAX];
79 char ip_addr[256]="*";
83 char relhome[PATH_MAX]="";
84 char webcitdir[PATH_MAX] = DATADIR;
87 const char *basedir = NULL;
88 char uds_listen_path[PATH_MAX]; /* listen on a unix domain socket? */
89 const char *I18nDumpFile = NULL;
93 WildFireInitBacktrace(argv[0], 2);
97 #ifdef DBG_PRINNT_HOOKS_AT_START
98 /* dbg_PrintHash(HandlerHash, nix, NULL);*/
101 /* Ensure that we are linked to the correct version of libcitadel */
102 if (libcitadel_version_number() < LIBCITADEL_VERSION_NUMBER) {
103 fprintf(stderr, " You are running libcitadel version %d.%02d\n",
104 (libcitadel_version_number() / 100), (libcitadel_version_number() % 100));
105 fprintf(stderr, "WebCit was compiled against version %d.%02d\n",
106 (LIBCITADEL_VERSION_NUMBER / 100), (LIBCITADEL_VERSION_NUMBER % 100));
110 strcpy(uds_listen_path, "");
112 /* Parse command line */
114 while ((a = getopt(argc, argv, "u:h:i:p:t:T:B:x:dD:G:cfsS:Z")) != EOF)
116 while ((a = getopt(argc, argv, "u:h:i:p:t:T:B:x:dD:G:cfZ")) != EOF)
123 hdir = strdup(optarg);
126 safestrncpy(webcitdir, hdir, sizeof webcitdir);
129 safestrncpy(relhome, relhome, sizeof relhome);
131 /* free(hdir); TODO: SHOULD WE DO THIS? */
136 running_as_daemon = 1;
139 pidfile = strdup(optarg);
140 running_as_daemon = 1;
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 lprintf(2, "gethostname: %s\n",
197 ssl_cipher_list = strdup(optarg);
201 DumpTemplateI18NStrings = 1;
202 I18nDump = NewStrBufPlain(HKEY("int templatestrings(void)\n{\n"));
203 I18nDumpFile = optarg;
206 fprintf(stderr, "usage: webcit "
207 "[-i ip_addr] [-p http_port] "
208 "[-t tracefile] [-c] [-f] "
209 "[-T Templatedebuglevel] "
210 "[-d] [-Z] [-G i18ndumpfile] "
212 "[-s] [-S cipher_suites]"
214 "[remotehost [remoteport]]\n");
219 ctdlhost = argv[optind];
221 ctdlport = argv[optind];
224 /* daemonize, if we were asked to */
225 if (!DumpTemplateI18NStrings && running_as_daemon) {
226 start_daemon(pidfile);
229 signal(SIGINT, graceful_shutdown);
230 signal(SIGHUP, graceful_shutdown);
233 webcit_calc_dirs_n_files(relh, basedir, home, webcitdir, relhome);
234 LoadIconDir(static_icon_dir);
236 /* Tell 'em who's in da house */
237 lprintf(1, PACKAGE_STRING "\n");
238 lprintf(1, "Copyright (C) 1996-2011 by the citadel.org team\n");
240 lprintf(1, "This program is open source software: you can redistribute it and/or\n");
241 lprintf(1, "modify it under the terms of the GNU General Public License as published\n");
242 lprintf(1, "by the Free Software Foundation, either version 3 of the License, or\n");
243 lprintf(1, "(at your option) any later version.\n");
245 lprintf(1, "This program is distributed in the hope that it will be useful,\n");
246 lprintf(1, "but WITHOUT ANY WARRANTY; without even the implied warranty of\n");
247 lprintf(1, "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n");
248 lprintf(1, "GNU General Public License for more details.\n");
250 lprintf(1, "You should have received a copy of the GNU General Public License\n");
251 lprintf(1, "along with this program. If not, see <http://www.gnu.org/licenses/>.\n");
255 /* initialize various subsystems */
257 initialise_modules();
259 if (DumpTemplateI18NStrings) {
261 StrBufAppendBufPlain(I18nDump, HKEY("}\n"), 0);
262 if (StrLength(I18nDump) < 50) {
263 lprintf(1, "********************************************************************************\n");
264 lprintf(1, "* No strings found in templates! Are you sure they're there? *\n");
265 lprintf(1, "********************************************************************************\n");
268 fd = fopen(I18nDumpFile, "w");
270 lprintf(1, "********************************************************************************\n");
271 lprintf(1, "* unable to open I18N dumpfile [%s] *\n", I18nDumpFile);
272 lprintf(1, "********************************************************************************\n");
275 rv = fwrite(ChrPtr(I18nDump), 1, StrLength(I18nDump), fd);
281 /* Tell libical to return an error instead of aborting if it sees badly formed iCalendar data. */
282 icalerror_errors_are_fatal = 0;
284 /* Use our own prefix on tzid's generated from system tzdata */
285 icaltimezone_set_tzid_prefix("/citadel.org/");
288 * Set up a place to put thread-specific data.
289 * We only need a single pointer per thread - it points to the
290 * wcsession struct to which the thread is currently bound.
292 if (pthread_key_create(&MyConKey, NULL) != 0) {
293 lprintf(1, "Can't create TSD key: %s\n", strerror(errno));
295 InitialiseSemaphores ();
298 * Set up a place to put thread-specific SSL data.
299 * We don't stick this in the wcsession struct because SSL starts
300 * up before the session is bound, and it gets torn down between
304 if (pthread_key_create(&ThreadSSL, NULL) != 0) {
305 lprintf(1, "Can't create TSD key: %s\n", strerror(errno));
310 * Bind the server to our favorite port.
311 * There is no need to check for errors, because webcit_tcp_server()
312 * exits if it doesn't succeed.
315 if (!IsEmptyStr(uds_listen_path)) {
316 lprintf(2, "Attempting to create listener socket at %s...\n", uds_listen_path);
317 msock = webcit_uds_server(uds_listen_path, LISTEN_QUEUE_LENGTH);
320 lprintf(2, "Attempting to bind to port %d...\n", http_port);
321 msock = webcit_tcp_server(ip_addr, http_port, LISTEN_QUEUE_LENGTH);
329 lprintf(2, "Listening on socket %d\n", msock);
330 signal(SIGPIPE, SIG_IGN);
332 pthread_mutex_init(&SessionListMutex, NULL);
335 * Start up the housekeeping thread
337 pthread_attr_init(&attr);
338 pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
339 pthread_create(&SessThread, &attr,
340 (void *(*)(void *)) housekeeping_loop, NULL);
344 * If this is an HTTPS server, fire up SSL
353 /* Become a worker thread. More worker threads will be spawned as they are needed. */
355 ShutDownLibCitadel ();