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check if number of peers to exclude doesn't exceed 512

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orignal 2020-04-23 15:22:07 -04:00
parent 6b596bd05f
commit ad211a63f3
1 changed files with 7 additions and 2 deletions
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9
libi2pd/I2NPProtocol.cpp
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@ -166,7 +166,7 @@ namespace i2p
std::shared_ptr<const i2p::tunnel::InboundTunnel> replyTunnel, const uint8_t * replyKey, const uint8_t * replyTag)
{
int cnt = excludedFloodfills.size ();
auto m = cnt > 0 ? NewI2NPMessage () : NewI2NPShortMessage ();
auto m = cnt > 7 ? NewI2NPMessage () : NewI2NPShortMessage ();
uint8_t * buf = m->GetPayload ();
memcpy (buf, dest, 32); // key
buf += 32;
@ -178,6 +178,11 @@ namespace i2p
buf += 4;
// excluded
if (cnt > 512)
{
LogPrint (eLogWarning, "I2NP: Too many peers to exclude ", cnt, " for DatabaseLookup");
cnt = 0;
}
htobe16buf (buf, cnt);
buf += 2;
if (cnt > 0)
@ -190,7 +195,7 @@ namespace i2p
}
// encryption
memcpy (buf, replyKey, 32);
buf[32] = uint8_t( 1 ); // 1 tag
buf[32] = 1; // 1 tag
memcpy (buf + 33, replyTag, 32);
buf += 65;