PurpleI2P/i2pd
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Merge pull request #1172 from majestrate/check-boundary-04-2018

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Check boundary
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orignal 2018-04-29 18:04:15 -04:00 committed by GitHub
commit 8fadac0fdc
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1 changed files with 8 additions and 3 deletions
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11
libi2pd/Destination.cpp
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@ -329,17 +329,17 @@ namespace client
switch (typeID)
{
case eI2NPData:
HandleDataMessage (buf + I2NP_HEADER_SIZE, bufbe16toh (buf + I2NP_HEADER_SIZE_OFFSET));
HandleDataMessage (buf + I2NP_HEADER_SIZE, GetI2NPMessageLength(buf, len - I2NP_HEADER_SIZE));
break;
case eI2NPDeliveryStatus:
// we assume tunnel tests non-encrypted
HandleDeliveryStatusMessage (CreateI2NPMessage (buf, GetI2NPMessageLength (buf, len), from));
break;
case eI2NPDatabaseStore:
HandleDatabaseStoreMessage (buf + I2NP_HEADER_SIZE, bufbe16toh (buf + I2NP_HEADER_SIZE_OFFSET));
HandleDatabaseStoreMessage (buf + I2NP_HEADER_SIZE, GetI2NPMessageLength(buf, len - I2NP_HEADER_SIZE));
break;
case eI2NPDatabaseSearchReply:
HandleDatabaseSearchReplyMessage (buf + I2NP_HEADER_SIZE, bufbe16toh (buf + I2NP_HEADER_SIZE_OFFSET));
HandleDatabaseSearchReplyMessage (buf + I2NP_HEADER_SIZE, GetI2NPMessageLength(buf, len - I2NP_HEADER_SIZE));
break;
default:
i2p::HandleI2NPMessage (CreateI2NPMessage (buf, GetI2NPMessageLength (buf, len), from));
@ -859,6 +859,11 @@ namespace client
void ClientDestination::HandleDataMessage (const uint8_t * buf, size_t len)
{
uint32_t length = bufbe32toh (buf);
if(length > len - 4)
{
LogPrint(eLogError, "Destination: Data message length ", length, " exceeds buffer length ", len);
return;
}
buf += 4;
// we assume I2CP payload
uint16_t fromPort = bufbe16toh (buf + 4), // source