Got rid of all of the .m.html templates and is_mobile cruft
[citadel.git] / webcit / context_loop.c
index 7521207b21b67fa90469ad2f95ed01f0fe8c6d78..35e6ee7b34e5afcae4d83571c5c29f306171b4f5 100644 (file)
@@ -1,17 +1,15 @@
 /*
- * $Id$
- *
  * 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
+ * Copyright (c) 1996-2011 by the citadel.org team
  *
- * This program is free 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 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
@@ -20,7 +18,7 @@
  *
  * 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
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  */
 
 #include "webcit.h"
@@ -67,7 +65,7 @@ void do_housekeeping(void)
         * Lock the session list, moving any candidates for euthanasia into
         * a separate list.
         */
-       pthread_mutex_lock(&SessionListMutex);
+       CtdlLogResult(pthread_mutex_lock(&SessionListMutex));
        for (sptr = SessionList; sptr != NULL; sptr = sptr->next) {
 
                /* Kill idle sessions */
@@ -92,7 +90,7 @@ void do_housekeeping(void)
                        sessions_to_kill = sptr;
                }
        }
-       pthread_mutex_unlock(&SessionListMutex);
+       CtdlLogResult(pthread_mutex_unlock(&SessionListMutex));
 
        /*
         * Now free up and destroy the culled sessions.
@@ -106,15 +104,24 @@ void do_housekeeping(void)
                session_destroy_modules(&sessions_to_kill);
                sessions_to_kill = sptr;
        }
+}
 
-       /*
-        * Check the size of our thread pool.  If all threads are executing, spawn another.
-        */
-       begin_critical_section(S_SPAWNER);
-       while (
+/*
+ * 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();
        }
        end_critical_section(S_SPAWNER);
@@ -158,7 +165,7 @@ wcsession *FindSession(wcsession **wclist, ParsedHttpHdrs *Hdr, pthread_mutex_t
                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 */
@@ -186,7 +193,7 @@ wcsession *FindSession(wcsession **wclist, ParsedHttpHdrs *Hdr, pthread_mutex_t
                        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));
@@ -203,7 +210,6 @@ wcsession *CreateSession(int Lockable, int Static, wcsession **wclist, ParsedHtt
        TheSession->Hdr = Hdr;
        TheSession->SessionKey = Hdr->HR.SessionKey;
        TheSession->serv_sock = (-1);
-       TheSession->is_mobile = -1;
 
        pthread_setspecific(MyConKey, (void *)TheSession);
        
@@ -226,7 +232,7 @@ wcsession *CreateSession(int Lockable, int Static, wcsession **wclist, ParsedHtt
                pthread_mutex_init(&TheSession->SessionMutex, NULL);
 
                if (ListMutex != NULL)
-                       pthread_mutex_lock(ListMutex);
+                       CtdlLogResult(pthread_mutex_lock(ListMutex));
 
                if (wclist != NULL) {
                        TheSession->nonce = rand();
@@ -234,31 +240,12 @@ wcsession *CreateSession(int Lockable, int Static, wcsession **wclist, ParsedHtt
                        *wclist = TheSession;
                }
                if (ListMutex != NULL)
-                       pthread_mutex_unlock(ListMutex);
+                       CtdlLogResult(pthread_mutex_unlock(ListMutex));
        }
        return TheSession;
 }
 
 
-/*
- * Detects a 'mobile' user agent 
- */
-int is_mobile_ua(char *user_agent) {
-      if (strstr(user_agent,"iPhone OS") != NULL) {
-       return 1;
-      } else if (strstr(user_agent,"Windows CE") != NULL) {
-       return 1;
-      } else if (strstr(user_agent,"SymbianOS") != NULL) {
-       return 1;
-      } else if (strstr(user_agent, "Opera Mobi") != NULL) {
-       return 1;
-      } else if (strstr(user_agent, "Firefox/2.0.0 Opera 9.51 Beta") != NULL) {
-             /*  For some reason a new install of Opera 9.51beta decided to spoof. */
-         return 1;
-         }
-      return 0;
-}
-
 /* If it's a "force 404" situation then display the error and bail. */
 void do_404(void)
 {
@@ -299,6 +286,7 @@ int ReadHttpSubject(ParsedHttpHdrs *Hdr, StrBuf *Line, StrBuf *Buf)
        }
 
        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.*/
@@ -564,17 +552,13 @@ void context_loop(ParsedHttpHdrs *Hdr)
        if (TheSession == NULL) {
                TheSession = CreateSession(1, 0, &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;
-                       }
+               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) {
@@ -592,7 +576,7 @@ void context_loop(ParsedHttpHdrs *Hdr)
        /*
         * 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 */
@@ -620,7 +604,7 @@ void context_loop(ParsedHttpHdrs *Hdr)
        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)
@@ -645,34 +629,23 @@ void Header_HandleContentType(StrBuf *Line, ParsedHttpHdrs *hdr)
        hdr->HR.ContentType = Line;
 }
 
-void Header_HandleUserAgent(StrBuf *Line, ParsedHttpHdrs *hdr)
-{
-       hdr->HR.user_agent = Line;
-#ifdef TECH_PREVIEW
-/* TODO: do this later on session creating
-       if ((WCC->is_mobile < 0) && is_mobile_ua(&buf[12])) {                   
-               WCC->is_mobile = 1;
-       }
-       else {
-               WCC->is_mobile = 0;
-       }
-*/
-#endif
-}
-
 
 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);
+       }
 }
 
 
@@ -781,7 +754,6 @@ InitModule_CONTEXT
 {
        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); /* Apache way... */
        RegisterHeaderHandler(HKEY("X-REAL-IP"), Header_HandleXFFHost);        /* NGinX way... */
        RegisterHeaderHandler(HKEY("HOST"), Header_HandleHost);