Initial commit
Change-Id: I6a4444e3c193dae437cd7929f4c39aba7b749efa
diff --git a/extensions/app_sip/locationinfosl.c b/extensions/app_sip/locationinfosl.c
new file mode 100644
index 0000000..f28beef
--- /dev/null
+++ b/extensions/app_sip/locationinfosl.c
@@ -0,0 +1,144 @@
+/*********************************************************************************************************
+* Software License Agreement (BSD License) *
+* Author: Alexandre Westfahl <awestfahl@freediameter.net> *
+* *
+* Copyright (c) 2010, Alexandre Westfahl, Teraoka Laboratory (Keio University), and the WIDE Project. *
+* *
+* All rights reserved. *
+* *
+* Redistribution and use of this software in source and binary forms, with or without modification, are *
+* permitted provided that the following conditions are met: *
+* *
+* * Redistributions of source code must retain the above *
+* copyright notice, this list of conditions and the *
+* following disclaimer. *
+* *
+* * Redistributions in binary form must reproduce the above *
+* copyright notice, this list of conditions and the *
+* following disclaimer in the documentation and/or other *
+* materials provided with the distribution. *
+* *
+* * Neither the name of the Teraoka Laboratory nor the *
+* names of its contributors may be used to endorse or *
+* promote products derived from this software without *
+* specific prior written permission of Teraoka Laboratory *
+* *
+* *
+* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED *
+* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A *
+* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR *
+* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT *
+* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS *
+* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR *
+* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF *
+* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *
+*********************************************************************************************************/
+#include "app_sip.h"
+
+//This callback is specific to SUSCRIBER LOCATOR. We must look for the "serving" SIP server
+int app_sip_SL_LIR_cb( struct msg ** msg, struct avp * paramavp, struct session * sess, void * opaque, enum disp_action * act)
+{
+ TRACE_ENTRY("%p %p %p %p", msg, paramavp, sess, act);
+
+ struct msg *ans, *qry;
+ struct avp *avp;
+ struct avp_hdr *avphdr;
+ union avp_value value;
+
+ //Result_Code to return in the answer
+ char result[55];
+ int ret=0;
+
+
+ if (msg == NULL)
+ return EINVAL;
+
+
+
+ // Create answer header
+ qry = *msg;
+ CHECK_FCT( fd_msg_new_answer_from_req ( fd_g_config->cnf_dict, msg, 0 ) );
+ ans = *msg;
+
+
+ //Add the Auth-Application-Id
+ {
+ CHECK_FCT( fd_msg_avp_new ( sip_dict.Auth_Application_Id, 0, &avp ) );
+ value.i32 = 6;
+ CHECK_FCT( fd_msg_avp_setvalue ( avp, &value ) );
+ CHECK_FCT( fd_msg_avp_add ( ans, MSG_BRW_LAST_CHILD, avp) );
+ }
+
+ // Add the Auth-Session-State AVP
+ {
+
+ CHECK_FCT( fd_msg_search_avp ( qry, sip_dict.Auth_Session_State, &avp) );
+ CHECK_FCT( fd_msg_avp_hdr( avp, &avphdr ) );
+
+ CHECK_FCT( fd_msg_avp_new ( sip_dict.Auth_Session_State, 0, &avp ) );
+ CHECK_FCT( fd_msg_avp_setvalue( avp, avphdr->avp_value ) );
+ CHECK_FCT( fd_msg_avp_add( ans, MSG_BRW_LAST_CHILD, avp ) );
+ }
+
+
+ // Add the Redirect Host AVP
+ {
+ CHECK_FCT( fd_msg_search_avp ( qry, sip_dict.SIP_AOR, &avp) );
+ CHECK_FCT( fd_msg_avp_hdr( avp, &avphdr ) );
+ size_t diameterurilen;
+ char * diameter_uri=NULL;
+
+
+
+ ret=get_diameter_uri(avphdr->avp_value->os.data, avphdr->avp_value->os.len, &diameter_uri, &diameterurilen);
+
+ //found
+ if(ret==0)
+ {
+ if(diameter_uri==NULL)
+ {
+ //There is a problem because we must get a Diameter_URI here
+ strcpy(result,"DIAMETER_UNABLE_TO_COMPLY");
+ goto out;
+ }
+ else
+ {
+ CHECK_FCT( fd_msg_avp_new ( sip_dict.Redirect_Host, 0, &avp ) );
+ value.os.data=(unsigned char *)diameter_uri;
+ value.os.len=diameterurilen;
+ CHECK_FCT( fd_msg_avp_setvalue( avp, &value ) );
+ CHECK_FCT( fd_msg_avp_add( ans, MSG_BRW_LAST_CHILD, avp ) );
+
+ CHECK_FCT( fd_msg_avp_new ( sip_dict.Redirect_Host_Usage, 0, &avp ) );
+ value.i32=ALL_USER; //All the request about the same user must be sent to this server
+ CHECK_FCT( fd_msg_avp_setvalue( avp, &value ) );
+ CHECK_FCT( fd_msg_avp_add( ans, MSG_BRW_LAST_CHILD, avp ) );
+ strcpy(result,"DIAMETER_SUCCESS");
+ }
+ }
+ else if(ret==1)
+ {//not found
+ //We don't know this SIP_AOR in SL
+ strcpy(result,"DIAMETER_ERROR_USER_UNKNOWN");
+ goto out;
+ }
+ else
+ {// returned 2, impossible to make request
+ //We couldn't make the request, we must stop process!
+ strcpy(result,"DIAMETER_UNABLE_TO_COMPLY");
+ goto out;
+ }
+ }
+
+
+out:
+ CHECK_FCT( fd_msg_rescode_set( ans, result, NULL, NULL, 1 ) );
+
+
+
+ CHECK_FCT( fd_msg_send( msg, NULL, NULL ));
+
+
+
+ return 0;
+}