/*
- * $Id$
- *
* This is the other half of the webserver. It handles the task of hooking
* up HTTP requests with the sessions they belong to, using HTTP cookies to
* keep track of things. If the HTTP request doesn't belong to any currently
* active session, a new session is started.
*
+ * Copyright (c) 1996-2010 by the citadel.org team
+ *
+ * This program is open source software. You can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "webcit.h"
/* Only one thread may manipulate SessionList at a time... */
pthread_mutex_t SessionListMutex;
-wcsession *SessionList = NULL; /**< our sessions ????*/
+wcsession *SessionList = NULL; /* Linked list of all webcit sessions */
-pthread_key_t MyConKey; /**< TSD key for MySession() */
+pthread_key_t MyConKey; /* TSD key for MySession() */
HashList *HttpReqTypes = NULL;
HashList *HttpHeaderHandler = NULL;
extern HashList *HandlerHash;
+/* the following two values start at 1 because the initial parent thread counts as one. */
+int num_threads_existing = 1; /* Number of worker threads which exist. */
+int num_threads_executing = 1; /* Number of worker threads currently executing. */
+
void DestroyHttpHeaderHandler(void *V)
{
OneHttpHeader *pHdr;
{
wcsession *sptr, *ss;
wcsession *sessions_to_kill = NULL;
- int num_sessions = 0;
- static int num_threads = MIN_WORKER_THREADS;
- /**
+ /*
* Lock the session list, moving any candidates for euthanasia into
* a separate list.
*/
- pthread_mutex_lock(&SessionListMutex);
- num_sessions = 0;
+ CtdlLogResult(pthread_mutex_lock(&SessionListMutex));
for (sptr = SessionList; sptr != NULL; sptr = sptr->next) {
- ++num_sessions;
- /** Kill idle sessions */
- if ((time(NULL) - (sptr->lastreq)) >
- (time_t) WEBCIT_TIMEOUT) {
+ /* Kill idle sessions */
+ if ((time(NULL) - (sptr->lastreq)) > (time_t) WEBCIT_TIMEOUT) {
sptr->killthis = 1;
}
- /** Remove sessions flagged for kill */
+ /* Remove sessions flagged for kill */
if (sptr->killthis) {
/** remove session from linked list */
sessions_to_kill = sptr;
}
}
- pthread_mutex_unlock(&SessionListMutex);
+ CtdlLogResult(pthread_mutex_unlock(&SessionListMutex));
- /**
+ /*
* Now free up and destroy the culled sessions.
*/
while (sessions_to_kill != NULL) {
session_destroy_modules(&sessions_to_kill);
sessions_to_kill = sptr;
- --num_sessions;
}
+}
- /**
- * If there are more sessions than threads, then we should spawn
- * more threads ... up to a predefined maximum.
- */
- while ( (num_sessions > num_threads)
- && (num_threads <= MAX_WORKER_THREADS) ) {
+/*
+ * Check the size of our thread pool. If all threads are executing, spawn another.
+ */
+void check_thread_pool_size(void)
+{
+ if (time_to_die) return; /* don't expand the thread pool during shutdown */
+
+ begin_critical_section(S_SPAWNER); /* only one of these should run at a time */
+ if (
+ (num_threads_executing >= num_threads_existing)
+ && (num_threads_existing < MAX_WORKER_THREADS)
+ ) {
+ lprintf(3, "%d of %d threads are executing. Adding another worker thread.\n",
+ num_threads_executing,
+ num_threads_existing
+ );
spawn_another_worker_thread();
- ++num_threads;
- lprintf(3, "There are %d sessions and %d threads active.\n",
- num_sessions, num_threads);
}
+ end_critical_section(S_SPAWNER);
}
GetAuthBasic(Hdr);
}
- pthread_mutex_lock(ListMutex);
+ CtdlLogResult(pthread_mutex_lock(ListMutex));
for (sptr = *wclist; ((sptr != NULL) && (TheSession == NULL)); sptr = sptr->next) {
/* If HTTP-AUTH, look for a session with matching credentials */
break;
}
}
- pthread_mutex_unlock(ListMutex);
+ CtdlLogResult(pthread_mutex_unlock(ListMutex));
if (TheSession == NULL)
lprintf(1, "didn't find sessionkey [%ld] for user [%s]\n",
Hdr->HR.SessionKey,ChrPtr(Hdr->c_username));
return TheSession;
}
-wcsession *CreateSession(int Lockable, wcsession **wclist, ParsedHttpHdrs *Hdr, pthread_mutex_t *ListMutex)
+wcsession *CreateSession(int Lockable, int Static, wcsession **wclist, ParsedHttpHdrs *Hdr, pthread_mutex_t *ListMutex)
{
wcsession *TheSession;
- lprintf(3, "Creating a new session\n");
+ if (!Static)
+ lprintf(3, "Creating a new session\n");
TheSession = (wcsession *) malloc(sizeof(wcsession));
memset(TheSession, 0, sizeof(wcsession));
TheSession->Hdr = Hdr;
TheSession->SessionKey = Hdr->HR.SessionKey;
TheSession->serv_sock = (-1);
- TheSession->chat_sock = (-1);
TheSession->is_mobile = -1;
pthread_setspecific(MyConKey, (void *)TheSession);
else {
TheSession->wc_session = Hdr->HR.desired_session;
}
-
+ Hdr->HR.Static = Static;
session_new_modules(TheSession);
if (Lockable) {
pthread_mutex_init(&TheSession->SessionMutex, NULL);
if (ListMutex != NULL)
- pthread_mutex_lock(ListMutex);
+ CtdlLogResult(pthread_mutex_lock(ListMutex));
if (wclist != NULL) {
TheSession->nonce = rand();
*wclist = TheSession;
}
if (ListMutex != NULL)
- pthread_mutex_unlock(ListMutex);
+ CtdlLogResult(pthread_mutex_unlock(ListMutex));
}
return TheSession;
}
-/**
- * \brief Detects a 'mobile' user agent
+/*
+ * Detects a 'mobile' user agent
*/
int is_mobile_ua(char *user_agent) {
if (strstr(user_agent,"iPhone OS") != NULL) {
{
hprintf("HTTP/1.1 404 Not found\r\n");
hprintf("Content-Type: text/plain\r\n");
- wprintf("Not found\r\n");
+ wc_printf("Not found\r\n");
end_burst();
}
}
StrBufAppendBuf(Hdr->this_page, Hdr->HR.ReqLine, 0);
+
/* chop Filename / query arguments */
Args = strchr(ChrPtr(Hdr->HR.ReqLine), '?');
if (Args == NULL) /* whe're not that picky about params... TODO: this will spoil '&' in filenames.*/
break;
} while (1);
/* remove the handlername from the URL */
- if (Pos != NULL) {
+ if ((Pos != NULL) && (Pos != StrBufNOTNULL)){
StrBufCutLeft(Hdr->HR.ReqLine,
Pos - ChrPtr(Hdr->HR.ReqLine));
}
StrBufExtract_token(HeaderName, Line, 0, ':');
pchs = ChrPtr(Line);
+ pche = pchs + StrLength(Line);
pch = pchs + StrLength(HeaderName) + 1;
pche = pchs + StrLength(Line);
- while (isspace(*pch) && (pch < pche))
+ while ((pch < pche) && isspace(*pch))
pch ++;
StrBufCutLeft(Line, pch - pchs);
{
StrBuf *Buf = NewStrBuf();
- FlushStrBuf(Hdr->HR.ReqLine);
- StrBufPlain(Hdr->HR.ReqLine, Line, len);
+ if (Hdr->HR.ReqLine != NULL) {
+ FlushStrBuf(Hdr->HR.ReqLine);
+ StrBufPlain(Hdr->HR.ReqLine, Line, len);
+ }
+ else {
+ Hdr->HR.ReqLine = NewStrBufPlain(Line, len);
+ }
ReadHttpSubject(Hdr, Hdr->HR.ReqLine, Buf);
FreeStrBuf(&Buf);
*/
isbogus = ReadHTTPRequest(Hdr);
+ Hdr->HR.dav_depth = 32767; /* TODO: find a general way to have non-0 defaults */
if (!isbogus)
isbogus = AnalyseHeaders(Hdr);
{
wcsession *Bogus;
- Bogus = CreateSession(0, NULL, Hdr, NULL);
+ Bogus = CreateSession(0, 1, NULL, Hdr, NULL);
do_404();
if ((Hdr->HR.Handler != NULL) && ((Hdr->HR.Handler->Flags & ISSTATIC) != 0))
{
wcsession *Static;
- Static = CreateSession(0, NULL, Hdr, NULL);
+ Static = CreateSession(0, 1, NULL, Hdr, NULL);
Hdr->HR.Handler->F();
* Create a new session if we have to
*/
if (TheSession == NULL) {
- TheSession = CreateSession(1, &SessionList, Hdr, &SessionListMutex);
-
- if ((StrLength(Hdr->c_username) == 0) && (!Hdr->HR.DontNeedAuth)) {
-
- if ((Hdr->HR.Handler != NULL) &&
- (XHTTP_COMMANDS & Hdr->HR.Handler->Flags) == XHTTP_COMMANDS) {
- OverrideRequest(Hdr, HKEY("GET /401 HTTP/1.0"));
- Hdr->HR.prohibit_caching = 1;
- }
- else {
- OverrideRequest(Hdr, HKEY("GET /static/nocookies.html?force_close_session=yes HTTP/1.0"));
- Hdr->HR.prohibit_caching = 1;
- }
+ TheSession = CreateSession(1, 0, &SessionList, Hdr, &SessionListMutex);
+
+ if ( (StrLength(Hdr->c_username) == 0)
+ && (!Hdr->HR.DontNeedAuth)
+ && (Hdr->HR.Handler != NULL)
+ && ((XHTTP_COMMANDS & Hdr->HR.Handler->Flags) == XHTTP_COMMANDS)
+ ) {
+ OverrideRequest(Hdr, HKEY("GET /401 HTTP/1.0"));
+ Hdr->HR.prohibit_caching = 1;
}
if (StrLength(Hdr->c_language) > 0) {
/*
* Bind to the session and perform the transaction
*/
- pthread_mutex_lock(&TheSession->SessionMutex); /* bind */
+ CtdlLogResult(pthread_mutex_lock(&TheSession->SessionMutex));
pthread_setspecific(MyConKey, (void *)TheSession);
TheSession->lastreq = time(NULL); /* log */
session_detach_modules(TheSession);
TheSession->Hdr = NULL;
- pthread_mutex_unlock(&TheSession->SessionMutex); /* unbind */
+ CtdlLogResult(pthread_mutex_unlock(&TheSession->SessionMutex));
}
void tmplput_nonce(StrBuf *Target, WCTemplputParams *TP)
StrBufAppendTemplate(Target, TP, WC->wc_fullname, 0);
}
-void tmplput_current_room(StrBuf *Target, WCTemplputParams *TP)
-{
- StrBufAppendTemplate(Target, TP, WC->wc_roomname, 0);
-}
-
void Header_HandleContentLength(StrBuf *Line, ParsedHttpHdrs *hdr)
{
hdr->HR.ContentLength = StrToi(Line);
void Header_HandleHost(StrBuf *Line, ParsedHttpHdrs *hdr)
{
- if ((follow_xff) && (hdr->HR.http_host != NULL))
- return;
- else
- hdr->HR.http_host = Line;
+ if (site_prefix == NULL) {
+ site_prefix = NewStrBuf();
+ StrBufAppendPrintf(site_prefix, "%s://", (is_https ? "https" : "http") );
+ StrBufAppendBuf(site_prefix, Line, 0);
+ }
}
void Header_HandleXFFHost(StrBuf *Line, ParsedHttpHdrs *hdr)
{
- if (follow_xff)
- hdr->HR.http_host = Line;
+ if ( (follow_xff) && (site_prefix == NULL)) {
+ site_prefix = NewStrBuf();
+ StrBufAppendPrintf(site_prefix, "http://"); /* this is naive; do something about it */
+ StrBufAppendBuf(site_prefix, Line, 0);
+ }
}
RegisterHeaderHandler(HKEY("CONTENT-LENGTH"), Header_HandleContentLength);
RegisterHeaderHandler(HKEY("CONTENT-TYPE"), Header_HandleContentType);
RegisterHeaderHandler(HKEY("USER-AGENT"), Header_HandleUserAgent);
- RegisterHeaderHandler(HKEY("X-FORWARDED-HOST"), Header_HandleXFFHost);
+ RegisterHeaderHandler(HKEY("X-FORWARDED-HOST"), Header_HandleXFFHost); /* Apache way... */
+ RegisterHeaderHandler(HKEY("X-REAL-IP"), Header_HandleXFFHost); /* NGinX way... */
RegisterHeaderHandler(HKEY("HOST"), Header_HandleHost);
RegisterHeaderHandler(HKEY("X-FORWARDED-FOR"), Header_HandleXFF);
RegisterHeaderHandler(HKEY("ACCEPT-ENCODING"), Header_HandleAcceptEncoding);
RegisterHeaderHandler(HKEY("IF-MODIFIED-SINCE"), Header_HandleIfModSince);
- RegisterNamespace("CURRENT_USER", 0, 1, tmplput_current_user, CTX_NONE);
- RegisterNamespace("CURRENT_ROOM", 0, 1, tmplput_current_room, CTX_NONE);
- RegisterNamespace("NONCE", 0, 0, tmplput_nonce, 0);
+ RegisterNamespace("CURRENT_USER", 0, 1, tmplput_current_user, NULL, CTX_NONE);
+ RegisterNamespace("NONCE", 0, 0, tmplput_nonce, NULL, 0);
- WebcitAddUrlHandler(HKEY("404"), do_404, ANONYMOUS|COOKIEUNNEEDED);
+ WebcitAddUrlHandler(HKEY("404"), "", 0, do_404, ANONYMOUS|COOKIEUNNEEDED);
/*
* Look for commonly-found probes of malware such as worms, viruses, trojans, and Microsoft Office.
* Short-circuit these requests so we don't have to send them through the full processing loop.
*/
- WebcitAddUrlHandler(HKEY("scripts"), do_404, ANONYMOUS|BOGUS); /* /root.exe - Worms and trojans and viruses, oh my! */
- WebcitAddUrlHandler(HKEY("c"), do_404, ANONYMOUS|BOGUS); /* /winnt */
- WebcitAddUrlHandler(HKEY("MSADC"), do_404, ANONYMOUS|BOGUS);
- WebcitAddUrlHandler(HKEY("_vti"), do_404, ANONYMOUS|BOGUS); /* Broken Microsoft DAV implementation */
- WebcitAddUrlHandler(HKEY("MSOffice"), do_404, ANONYMOUS|BOGUS); /* Stoopid MSOffice thinks everyone is IIS */
- WebcitAddUrlHandler(HKEY("nonexistenshit"), do_404, ANONYMOUS|BOGUS); /* Exploit found in the wild January 2009 */
+ WebcitAddUrlHandler(HKEY("scripts"), "", 0, do_404, ANONYMOUS|BOGUS); /* /root.exe - Worms and trojans and viruses, oh my! */
+ WebcitAddUrlHandler(HKEY("c"), "", 0, do_404, ANONYMOUS|BOGUS); /* /winnt */
+ WebcitAddUrlHandler(HKEY("MSADC"), "", 0, do_404, ANONYMOUS|BOGUS);
+ WebcitAddUrlHandler(HKEY("_vti"), "", 0, do_404, ANONYMOUS|BOGUS); /* Broken Microsoft DAV implementation */
+ WebcitAddUrlHandler(HKEY("MSOffice"), "", 0, do_404, ANONYMOUS|BOGUS); /* Stoopid MSOffice thinks everyone is IIS */
+ WebcitAddUrlHandler(HKEY("nonexistenshit"), "", 0, do_404, ANONYMOUS|BOGUS); /* Exploit found in the wild January 2009 */
}
projects / citadel.git / blobdiff