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- implemented DH protocol for PFS encryption in distant chat between GXS ids.

Browse source 
- changed format of keyId in rstlvkeys.{h,cc}, but kept the serialisation for backward compatibility (A #define needs to be removed to fix it for good). Updated rsrecogn, rsmsgitems, gxssecurity accordingly
- added "chat peer" in IdDialog to help testing distant chat.

Distant chat works and is now encrypted. The GUI still needs some smoothing: display of correct peer names
in chat window, remove the need to add a message in p3chatservice.cc:3217 to force poping up the chat window.

- added MsgAddress class to handle generic address types while keeping type separation in Messages. Not used yet.



git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@7403 b45a01b8-16f6-495d-af2f-9b41ad6348cc
This commit is contained in:
csoler 2014-06-12 10:28:23 +00:00
parent 114352c0d6
commit 80f4401e88
21 changed files with 720 additions and 182 deletions
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82
libretroshare/src/serialiser/rsmsgitems.cc
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@ -57,6 +57,19 @@ std::ostream& RsChatMsgItem::print(std::ostream &out, uint16_t indent)
printRsItemEnd(out, "RsChatMsgItem", indent);
return out;
}
std::ostream& RsChatDHPublicKeyItem::print(std::ostream &out, uint16_t indent)
{
printRsItemBase(out, "RsChatDHPublicKeyItem", indent);
uint16_t int_Indent = indent + 2;
printIndent(out, int_Indent);
out << " Signature Key ID: " << signature.keyId << std::endl ;
out << " Public Key ID: " << gxs_key.keyId << std::endl ;
printRsItemEnd(out, "RsChatMsgItem", indent);
return out;
}
std::ostream& RsChatLobbyListItem_deprecated2::print(std::ostream &out, uint16_t indent)
{
printRsItemBase(out, "RsChatLobbyListItem_deprecated2", indent);
@ -296,6 +309,7 @@ RsItem *RsChatSerialiser::deserialise(void *data, uint32_t *pktsize)
case RS_PKT_SUBTYPE_CHAT_LOBBY_LIST_deprecated: return new RsChatLobbyListItem_deprecated(data,*pktsize) ;
case RS_PKT_SUBTYPE_CHAT_LOBBY_LIST_deprecated2:return new RsChatLobbyListItem_deprecated2(data,*pktsize) ;
case RS_PKT_SUBTYPE_CHAT_LOBBY_CONFIG: return new RsChatLobbyConfigItem(data,*pktsize) ;
case RS_PKT_SUBTYPE_DISTANT_CHAT_DH_PUBLIC_KEY: return new RsChatDHPublicKeyItem(data,*pktsize) ;
default:
std::cerr << "Unknown packet type in chat!" << std::endl ;
return NULL ;
@ -466,6 +480,17 @@ uint32_t RsChatLobbyConfigItem::serial_size()
return s;
}
uint32_t RsChatDHPublicKeyItem::serial_size()
{
uint32_t s = 8 ; // header
s += 4 ; // BN size
s += BN_num_bytes(public_key) ; // public_key
s += signature.TlvSize() ; // signature
s += gxs_key.TlvSize() ; // gxs_key
return s ;
}
/*************************************************************************/
RsChatAvatarItem::~RsChatAvatarItem()
@ -477,6 +502,41 @@ RsChatAvatarItem::~RsChatAvatarItem()
}
}
bool RsChatDHPublicKeyItem::serialise(void *data,uint32_t& pktsize)
{
uint32_t tlvsize = serial_size() ;
uint32_t offset = 0;
if (pktsize < tlvsize)
return false; /* not enough space */
pktsize = tlvsize;
bool ok = true;
ok &= setRsItemHeader(data, tlvsize, PacketId(), tlvsize);
/* skip the header */
offset += 8;
uint32_t s = BN_num_bytes(public_key) ;
ok &= setRawUInt32(data, tlvsize, &offset, s);
BN_bn2bin(public_key,&((unsigned char *)data)[offset]) ;
offset += s ;
ok &= signature.SetTlv(data, tlvsize, &offset);
ok &= gxs_key.SetTlv(data, tlvsize, &offset);
if (offset != tlvsize)
{
ok = false;
std::cerr << "RsChatDHPublicKeyItem::serialiseItem() Size Error! offset=" << offset << ", tlvsize=" << tlvsize << std::endl;
}
return ok ;
}
/* serialise the data to the buffer */
bool RsChatMsgItem::serialise(void *data, uint32_t& pktsize)
{
@ -981,6 +1041,28 @@ bool RsChatLobbyConfigItem::serialise(void *data, uint32_t& pktsize)
return ok;
}
RsChatDHPublicKeyItem::RsChatDHPublicKeyItem(void *data,uint32_t /*size*/)
: RsChatItem(RS_PKT_SUBTYPE_DISTANT_CHAT_DH_PUBLIC_KEY)
{
uint32_t offset = 8; // skip the header
uint32_t rssize = getRsItemSize(data);
bool ok = true ;
uint32_t s=0 ;
/* get mandatory parts first */
ok &= getRawUInt32(data, rssize, &offset, &s);
public_key = BN_bin2bn(&((unsigned char *)data)[offset],s,NULL) ;
offset += s ;
ok &= signature.GetTlv(data, rssize, &offset) ;
ok &= gxs_key.GetTlv(data, rssize, &offset) ;
if (offset != rssize)
std::cerr << "RsChatDHPublicKeyItem::() Size error while deserializing." << std::endl ;
if (!ok)
std::cerr << "RsChatDHPublicKeyItem::() Unknown error while deserializing." << std::endl ;
}
RsChatMsgItem::RsChatMsgItem(void *data,uint32_t /*size*/,uint8_t subtype)
: RsChatItem(subtype)
{