fix for SRTP bug reported by christophe

* prevents buffer overflow on big messages
* sdp parse buffer size increased to 2048 (necessaary?)



git-svn-id: http://svn.berlios.de/svnroot/repos/sems/trunk@212 8eb893ce-cfd4-0310-b710-fb5ebe64c474

core/AmSdp.cpp

@@ -34,6 +34,7 @@
 #include "AmCmd.h"
 #include "AmUtils.h"
 #include "AmPlugIn.h"
+#include "AmSession.h"
 
 #include "amci/amci.h"
 #include "log.h"
@@ -139,7 +140,10 @@ AmSdp::AmSdp(const AmSdp& p_sdp_msg)
 
 void AmSdp::setBody(const char* _sdp_msg)
 {
-    strcpy(r_buf,_sdp_msg);
+    if (!memchr(_sdp_msg, '\0', BUFFER_SIZE)) {
+	    throw AmSession::Exception(513, "Message too big");
+    }
+    strcpy(r_buf, _sdp_msg);
 }
 
 

core/AmSdp.h

@@ -44,7 +44,7 @@ using std::vector;
  */
 
 /** Scratch buffer size. */
-#define BUFFER_SIZE 1024
+#define BUFFER_SIZE 2048
 
 /** network type */
 enum NetworkType { NT_OTHER=0, NT_IN };