Packets: extended description of bad_cast exception in Packet.as()

[senf.git] / senf / Packets / 80221Bundle / MIHPacket.cc

diff --git a/senf/Packets/80221Bundle/MIHPacket.cc b/senf/Packets/80221Bundle/MIHPacket.cc
index f4efbeb..4c40482 100644 (file)
--- a/senf/Packets/80221Bundle/MIHPacket.cc
+++ b/senf/Packets/80221Bundle/MIHPacket.cc
@@ -40,7 +40,7 @@ SENF_PACKET_REGISTRY_REGISTER( senf::EtherTypes, 0x8917, senf::MIHPacket);
 //-/////////////////////////////////////////////////////////////////////////////////////////////////
 // MIHPacketType
 
-prefix_ void senf::MIHPacketType::dump(packet p, std::ostream &os)
+prefix_ void senf::MIHPacketType::dump(packet p, std::ostream & os)
 {
     boost::io::ios_all_saver ias(os);
     os << "MIH Packet:\n"
@@ -78,23 +78,26 @@ prefix_ senf::PacketInterpreterBase::factory_t senf::MIHPacketType::nextPacketTy
     return e ? e->factory() : MIHGenericPayloadPacket::factory();
 }
 
-prefix_ std::pair<bool, std::string> senf::MIHPacketType::validate(packet p)
+prefix_ void senf::MIHPacketType::validate(packet p)
 {
-    if (p.data().size() < initSize())
-        return std::make_pair(false, "truncated MIH message");
-    if (p->version() != 1)
-        return std::make_pair(false, "invalid MIH version: " + senf::str(p->version()) );
-    if (p->payloadLength() != p.size()-8)
-        return std::make_pair(false, "wrong MIH length: " + senf::str(p->payloadLength()) );
-    if (p.next(senf::nothrow))
-        return MIHMessageRegistry::instance().validate( p->messageId(), p.next());
-    return std::make_pair(true, "");
+    try {
+        if (p.data().size() < initSize())
+            throw InvalidMIHPacketException("truncated MIH message");
+        if (p->version() != 1)
+            throw InvalidMIHPacketException("invalid MIH version: ") << senf::str(p->version());
+        if (p->payloadLength() != p.size()-8)
+            throw InvalidMIHPacketException("wrong MIH length: ") << senf::str(p->payloadLength());
+        if (p.next(senf::nothrow))
+            MIHMessageRegistry::instance().validate( p->messageId(), p.next());
+    } catch (TruncatedPacketException & e) {
+        throw InvalidMIHPacketException("truncated MIH message");
+    }
 }
 
 //-/////////////////////////////////////////////////////////////////////////////////////////////////
 // MIHGenericPayloadPacketType
 
-prefix_ void senf::MIHGenericPayloadPacketType::dump(packet p, std::ostream &os)
+prefix_ void senf::MIHGenericPayloadPacketType::dump(packet p, std::ostream & os)
 {
     boost::io::ios_all_saver ias(os);
     os << "MIH Payload (service specific TLVs):\n";