* More license declarations

[citadel.git] / citadel / modules / jabber / xmpp_sasl_service.c

diff --git a/citadel/modules/jabber/xmpp_sasl_service.c b/citadel/modules/jabber/xmpp_sasl_service.c
index 41458597404a9ced5466c985e03dbdc0a14f61b1..f015236e0146528097d3174688c33372b5ab2a6e 100644 (file)
--- a/citadel/modules/jabber/xmpp_sasl_service.c
+++ b/citadel/modules/jabber/xmpp_sasl_service.c
@@ -3,11 +3,23 @@
  *
  * Barebones SASL authentication service for XMPP (Jabber) clients.
  *
- * Why barebones?  Because RFC3920 says we "must" support DIGEST-MD5 but
- * we only support PLAIN.
+ * Note: RFC3920 says we "must" support DIGEST-MD5 but we only support PLAIN.
  *
- * Copyright (c) 2007 by Art Cancro
- * This code is released under the terms of the GNU General Public License.
+ * Copyright (c) 2007-2009 by Art Cancro
+ *
+ *  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 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
  *
  */
 
@@ -36,6 +48,7 @@
 #include <string.h>
 #include <limits.h>
 #include <ctype.h>
+#include <expat.h>
 #include <libcitadel.h>
 #include "citadel.h"
 #include "server.h"
@@ -46,9 +59,6 @@
 #include "internet_addressing.h"
 #include "md5.h"
 #include "ctdl_module.h"
-
-#ifdef HAVE_EXPAT
-#include <expat.h>
 #include "serv_xmpp.h"
 
 
@@ -63,11 +73,25 @@ int xmpp_auth_plain(char *authstring)
        char pass[256];
        int result;
 
+
+       /* Take apart the authentication string */
+       memset(pass, 0, sizeof(pass));
+
        CtdlDecodeBase64(decoded_authstring, authstring, strlen(authstring));
        safestrncpy(ident, decoded_authstring, sizeof ident);
        safestrncpy(user, &decoded_authstring[strlen(ident) + 1], sizeof user);
        safestrncpy(pass, &decoded_authstring[strlen(ident) + strlen(user) + 2], sizeof pass);
 
+
+       /* If there are underscores in either string, change them to spaces.  Some clients
+        * do not allow spaces so we can tell the user to substitute underscores if their
+        * login name contains spaces.
+        */
+       convert_spaces_to_underscores(ident);
+       convert_spaces_to_underscores(user);
+
+       /* Now attempt authentication */
+
        if (!IsEmptyStr(ident)) {
                result = CtdlLoginExistingUser(user, ident);
        }
@@ -106,9 +130,15 @@ void xmpp_sasl_auth(char *sasl_auth_mech, char *authstring) {
                return;
        }
 
-        if (CC->logged_in) logout(CC);  /* Client may try to log in twice.  Handle this. */
+        if (CC->logged_in) logout();  /* Client may try to log in twice.  Handle this. */
 
-       if (xmpp_auth_plain(authstring) == 0) {
+       if (CC->nologin) {
+               cprintf("<failure xmlns=\"urn:ietf:params:xml:ns:xmpp-sasl\">");
+               cprintf("<system-shutdown/>");
+               cprintf("</failure>");
+       }
+
+       else if (xmpp_auth_plain(authstring) == 0) {
                cprintf("<success xmlns=\"urn:ietf:params:xml:ns:xmpp-sasl\"/>");
        }
 
@@ -119,17 +149,30 @@ void xmpp_sasl_auth(char *sasl_auth_mech, char *authstring) {
        }
 }
 
+
+
 /*
- * Offer non-SASL authentication to legacy clients.
+ * Non-SASL authentication
  */
-void jabber_offer_non_sasl_authentication(void) {
-       cprintf("<query xmlns=\"jabber:iq:auth\">"
-               "<username/>"
-               "<password/>"
-               /* "<digest/>" */
-               /* "<resource/>" */
-               "</query>"
+void jabber_non_sasl_authenticate(char *iq_id, char *username, char *password, char *resource) {
+       int result;
+
+        if (CC->logged_in) logout();  /* Client may try to log in twice.  Handle this. */
+
+       result = CtdlLoginExistingUser(NULL, username);
+       if (result == login_ok) {
+               result = CtdlTryPassword(password);
+               if (result == pass_ok) {
+                       cprintf("<iq type=\"result\" id=\"%s\"></iq>", iq_id);  /* success */
+                       return;
+               }
+       }
+
+       /* failure */
+       cprintf("<iq type=\"error\" id=\"%s\">", iq_id);
+       cprintf("<error code=\"401\" type=\"auth\">"
+               "<not-authorized xmlns=\"urn:ietf:params:xml:ns:xmpp-stanzas\"/>"
+               "</error>"
+               "</iq>"
        );
 }
-
-#endif /* HAVE_EXPAT */