]> code.citadel.org Git - citadel.git/blobdiff - webcit/context_loop.c
* start migrating important message to strbuf; have both meanwhile.
[citadel.git] / webcit / context_loop.c
index dab22a9dec5ca80f923513db079be354799f8584..a85c87b8ef186c5c67fb530c7323954b6c280da8 100644 (file)
@@ -32,17 +32,28 @@ void DestroySession(wcsession **sessions_to_kill)
        if ((*sessions_to_kill)->cache_fold != NULL) {
                free((*sessions_to_kill)->cache_fold);
        }
+       DeleteServInfo(&((*sessions_to_kill)->serv_info));
        DeleteHash(&((*sessions_to_kill)->attachments));
        free_march_list((*sessions_to_kill));
        DeleteHash(&((*sessions_to_kill)->hash_prefs));
-       DeleteHash(&((*sessions_to_kill)->IconBarSetttings));
+       DeleteHash(&((*sessions_to_kill)->IconBarSettings));
        DeleteHash(&((*sessions_to_kill)->ServCfg));
+       FreeStrBuf(&((*sessions_to_kill)->ReadBuf));
        FreeStrBuf(&((*sessions_to_kill)->UrlFragment1));
        FreeStrBuf(&((*sessions_to_kill)->UrlFragment2));
        FreeStrBuf(&((*sessions_to_kill)->UrlFragment3));
+       FreeStrBuf(&((*sessions_to_kill)->UrlFragment4));
        FreeStrBuf(&((*sessions_to_kill)->WBuf));
        FreeStrBuf(&((*sessions_to_kill)->HBuf));
        FreeStrBuf(&((*sessions_to_kill)->CLineBuf));
+       FreeStrBuf(&((*sessions_to_kill)->wc_username));
+       FreeStrBuf(&((*sessions_to_kill)->wc_fullname));
+       FreeStrBuf(&((*sessions_to_kill)->wc_password));
+       FreeStrBuf(&((*sessions_to_kill)->wc_roomname));
+       FreeStrBuf(&((*sessions_to_kill)->httpauth_user));
+       FreeStrBuf(&((*sessions_to_kill)->httpauth_pass));
+       FreeStrBuf(&((*sessions_to_kill)->ImportantMsg));
+       FreeStrBuf(&((*sessions_to_kill)->cs_inet_email));
        free((*sessions_to_kill));
        (*sessions_to_kill) = NULL;
 }
@@ -125,8 +136,8 @@ void do_housekeeping(void)
 }
 
 
-/**
- * \brief Wake up occasionally and clean house
+/*
+ * Wake up occasionally and clean house
  */
 void housekeeping_loop(void)
 {
@@ -137,13 +148,10 @@ void housekeeping_loop(void)
 }
 
 
-/**
- * \brief Create a Session id
+/*
+ * Create a Session id
  * Generate a unique WebCit session ID (which is not the same thing as the
  * Citadel session ID).
- *
- * \todo FIXME ... ensure that session number is truly unique
- *
  */
 int GenerateSessionID(void)
 {
@@ -156,16 +164,6 @@ int GenerateSessionID(void)
        return ++seq;
 }
 
-/*
- * Collapse multiple cookies on one line
- */
-int ReqGetStrBuf(int *sock, StrBuf *Target, StrBuf *buf)
-{
-       
-       return ClientGetLine(sock, Target, buf);
-}
-
-
 
 /*
  * lingering_close() a`la Apache. see
@@ -205,28 +203,26 @@ int lingering_close(int fd)
 
 
 
-/**
- * \brief      sanity requests
- *             Check for bogus requests coming from brain-dead Windows boxes.
- *
- * \param      http_cmd        The HTTP request to check
+/*
+ * 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.
  */
 int is_bogus(StrBuf *http_cmd) {
        const char *url;
        int i, max;
        const char *bogus_prefixes[] = {
-               "/scripts/root.exe",    /**< Worms and trojans and viruses, oh my! */
+               "/scripts/root.exe",    /* Worms and trojans and viruses, oh my! */
                "/c/winnt",
                "/MSADC/",
-               "/_vti",                /**< Broken Microsoft DAV implementation */
-               "/MSOffice"             /**< Stoopid MSOffice thinks everyone is IIS */
+               "/_vti",                /* Broken Microsoft DAV implementation */
+               "/MSOffice",            /* Stoopid MSOffice thinks everyone is IIS */
+               "/nonexistenshit"       /* Exploit found in the wild January 2009 */
        };
 
        url = ChrPtr(http_cmd);
        if (IsEmptyStr(url)) return(1);
        ++url;
 
-
        max = sizeof(bogus_prefixes) / sizeof(char *);
 
        for (i=0; i<max; ++i) {
@@ -241,8 +237,9 @@ int is_bogus(StrBuf *http_cmd) {
 
 const char *nix(void *vptr) {return ChrPtr( (StrBuf*)vptr);}
 
-/**
- * \brief handle one request
+/*
+ * handle one request
+ *
  * This loop gets called once for every HTTP connection made to WebCit.  At
  * this entry point we have an HTTP socket with a browser allegedly on the
  * other end, but we have not yet bound to a WebCit session.
@@ -252,10 +249,10 @@ const char *nix(void *vptr) {return ChrPtr( (StrBuf*)vptr);}
  * transaction loop.  Afterwards, we unbind from the session.  When this
  * function returns, the worker thread is then free to handle another
  * transaction.
- * \param sock the socket we will put our answer to
  */
 void context_loop(int *sock)
 {
+       const char *Pos = NULL;
        const char *buf;
        int desired_session = 0;
        int got_cookie = 0;
@@ -264,7 +261,6 @@ void context_loop(int *sock)
        char httpauth_string[1024];
        char httpauth_user[1024];
        char httpauth_pass[1024];
-       char *ptr = NULL;
        int session_is_new = 0;
        int nLine = 0;
        int LineLen;
@@ -278,20 +274,23 @@ void context_loop(int *sock)
        strcpy(httpauth_user, DEFAULT_HTTPAUTH_USER);
        strcpy(httpauth_pass, DEFAULT_HTTPAUTH_PASS);
 
-       /**
+       /*
         * Find out what it is that the web browser is asking for
         */
        HeaderName = NewStrBuf();
        Buf = NewStrBuf();
        LastLine = NULL;
        HTTPHeaders = NewHash(1, NULL);
-       /**
+
+       /*
         * Read in the request
         */
        do {
                nLine ++;
                Line = NewStrBuf();
-               if (ReqGetStrBuf(sock, Line, Buf) < 0) return;
+
+
+               if (ClientGetLine(sock, Line, Buf, &Pos) < 0) return;
 
                LineLen = StrLength(Line);
 
@@ -304,7 +303,7 @@ void context_loop(int *sock)
                        continue;
                }
 
-               /** Do we need to Unfold? */
+               /* Do we need to Unfold? */
                if ((LastLine != NULL) && 
                    (isspace(*ChrPtr(Line)))) {
                        pch = pchs = ChrPtr(Line);
@@ -317,8 +316,8 @@ void context_loop(int *sock)
                        continue;
                }
 
+               StrBufSanitizeAscii(Line, 'ยง');
                StrBufExtract_token(HeaderName, Line, 0, ':');
-               /*/// TODO: filter bad chars! */
 
                pchs = ChrPtr(Line);
                pch = pchs + StrLength(HeaderName) + 1;
@@ -333,10 +332,10 @@ void context_loop(int *sock)
        } while (LineLen > 0);
        FreeStrBuf(&HeaderName);
 
-/*///  dbg_PrintHash(HTTPHeaders, nix, NULL); */
+/*     dbg_PrintHash(HTTPHeaders, nix, NULL);  */
 
 
-       /**
+       /*
         * Can we compress?
         */
        if (GetHash(HTTPHeaders, HKEY("ACCEPT-ENCODING"), &vLine) && 
@@ -347,19 +346,17 @@ void context_loop(int *sock)
                }
        }
 
-       /**
-        * Browser-based sessions use cookies for session 
-
-authentication
+       /*
+        * Browser-based sessions use cookies for session authentication
         */
        if (GetHash(HTTPHeaders, HKEY("COOKIE"), &vLine) && 
            (vLine != NULL)) {
                cookie_to_stuff(vLine, &desired_session,
-                               NULL, 0, NULL, 0, NULL, 0);
+                               NULL, NULL, NULL);
                got_cookie = 1;
        }
 
-       /**
+       /*
         * GroupDAV-based sessions use HTTP authentication
         */
        if (GetHash(HTTPHeaders, HKEY("AUTHORIZATION"), &vLine) && 
@@ -386,12 +383,6 @@ authentication
        }
 
 
-       /**
-        * If the request is prefixed by "/webcit" then chop that off.  This
-        * allows a front end web server to forward all /webcit requests to us
-        * while still using the same web server port for other things.
-        */
-
        ReqType = NewStrBuf();
        HTTPVersion = NewStrBuf();
        StrBufExtract_token(HTTPVersion, ReqLine, 2, ' ');
@@ -399,13 +390,16 @@ authentication
        StrBufCutLeft(ReqLine, StrLength(ReqType) + 1);
        StrBufCutRight(ReqLine, StrLength(HTTPVersion) + 1);
 
-       if ((follow_xff == 1) && (StrLength(ReqLine) >= 8) &&
-           (ptr = strstr(ChrPtr(ReqLine), "/webcit/"), /*< Handle "/webcit/" */
-            (ptr != NULL))) {
+       /*
+        * If the request is prefixed by "/webcit" then chop that off.  This
+        * allows a front end web server to forward all /webcit requests to us
+        * while still using the same web server port for other things.
+        */
+       if ( (StrLength(ReqLine) >= 8) && (strstr(ChrPtr(ReqLine), "/webcit/")) ) {
                StrBufCutLeft(ReqLine, 7);
        }
 
-       /** Begin parsing the request. */
+       /* Begin parsing the request. */
 #ifdef TECH_PREVIEW
        if ((strncmp(ChrPtr(ReqLine), "/sslg", 5) != 0) &&
            (strncmp(ChrPtr(ReqLine), "/static/", 8) != 0) &&
@@ -473,8 +467,8 @@ authentication
 
                        /** If HTTP-AUTH, look for a session with matching credentials */
                        if ( (!IsEmptyStr(httpauth_user))
-                          &&(!strcasecmp(sptr->httpauth_user, httpauth_user))
-                          &&(!strcasecmp(sptr->httpauth_pass, httpauth_pass)) ) {
+                            &&(!strcasecmp(ChrPtr(sptr->httpauth_user), httpauth_user))
+                            &&(!strcasecmp(ChrPtr(sptr->httpauth_pass), httpauth_pass)) ) {
                                TheSession = sptr;
                        }
 
@@ -511,16 +505,22 @@ authentication
                        TheSession->wc_session = desired_session;
                }
 
-               strcpy(TheSession->httpauth_user, httpauth_user);
-               strcpy(TheSession->httpauth_pass, httpauth_pass);
+               if (TheSession->httpauth_user != NULL){
+                       FlushStrBuf(TheSession->httpauth_user);
+                       StrBufAppendBufPlain(TheSession->httpauth_user, httpauth_user, -1, 0);
+               }
+               else TheSession->httpauth_user = NewStrBufPlain(httpauth_user, -1);
+               if (TheSession->httpauth_user != NULL){
+                       FlushStrBuf(TheSession->httpauth_pass);
+                       StrBufAppendBufPlain(TheSession->httpauth_pass, httpauth_user, -1, 0);
+               }
+               else TheSession->httpauth_pass = NewStrBufPlain(httpauth_user, -1);
+
+               TheSession->CLineBuf = NewStrBuf();
                TheSession->hash_prefs = NewHash(1,NULL);       /* Get a hash table for the user preferences */
                pthread_mutex_init(&TheSession->SessionMutex, NULL);
                pthread_mutex_lock(&SessionListMutex);
-               TheSession->urlstrings = NULL;
-               TheSession->vars = NULL;
                TheSession->nonce = rand();
-               TheSession->WBuf = NULL;
-               TheSession->CLineBuf = NewStrBuf();
                TheSession->next = SessionList;
                TheSession->is_mobile = -1;
                SessionList = TheSession;
@@ -539,6 +539,8 @@ authentication
        pthread_mutex_lock(&TheSession->SessionMutex);          /* bind */
        pthread_setspecific(MyConKey, (void *)TheSession);
        
+       if (TheSession->ImportantMsg == NULL)
+               TheSession->ImportantMsg = NewStrBuf();
        TheSession->urlstrings = NewHash(1,NULL);
        TheSession->vars = NewHash(1,NULL);
        TheSession->http_sock = *sock;
@@ -550,7 +552,7 @@ authentication
        }
        go_selected_language();                                 /* set locale */
 #endif
-       session_loop(HTTPHeaders, ReqLine, ReqType, Buf);                               /* do transaction */
+       session_loop(HTTPHeaders, ReqLine, ReqType, Buf, &Pos);                         /* do transaction */
 #ifdef ENABLE_NLS
        stop_selected_language();                               /* unset locale */
 #endif
@@ -576,16 +578,30 @@ authentication
        
 }
 
-void tmpl_nonce(StrBuf *Target, int nArgs, WCTemplateToken *Tokens, void *Context, int ContextType)
+void tmplput_nonce(StrBuf *Target, WCTemplputParams *TP)
 {
        wcsession *WCC = WC;
        StrBufAppendPrintf(Target, "%ld",
                           (WCC != NULL)? WCC->nonce:0);                   
 }
 
+void tmplput_current_user(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 
 InitModule_CONTEXT
 (void)
 {
-       RegisterNamespace("NONCE", 0, 0, tmpl_nonce, 0);
+       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);
 }