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fix(combatlog): reject truncated spell damage log tails

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Kelsi 2026-03-14 15:13:49 -07:00
parent f07b730473
commit f57893a459
1 changed files with 9 additions and 6 deletions
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15
src/game/world_packets.cpp
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@ -3423,8 +3423,11 @@ bool AttackerStateUpdateParser::parse(network::Packet& packet, AttackerStateUpda
}
bool SpellDamageLogParser::parse(network::Packet& packet, SpellDamageLogData& data) {
// Upfront validation: packed GUIDs(1-8 each) + spellId(4) + damage(4) + overkill(4) + schoolMask(1) + absorbed(4) + resisted(4) = 30 bytes minimum
if (packet.getSize() - packet.getReadPos() < 30) return false;
// Upfront validation:
// packed GUIDs(1-8 each) + spellId(4) + damage(4) + overkill(4) + schoolMask(1)
// + absorbed(4) + resisted(4) + periodicLog(1) + unused(1) + blocked(4) + flags(4)
// = 33 bytes minimum.
if (packet.getSize() - packet.getReadPos() < 33) return false;
size_t startPos = packet.getReadPos();
if (!hasFullPackedGuid(packet)) {
@ -3451,11 +3454,11 @@ bool SpellDamageLogParser::parse(network::Packet& packet, SpellDamageLogData& da
data.absorbed = packet.readUInt32();
data.resisted = packet.readUInt32();
// Skip remaining fields (periodicLog + unused + blocked + flags = 10 bytes)
// Remaining fields are required for a complete event.
// Reject truncated packets so we do not emit partial/incorrect combat entries.
if (packet.getSize() - packet.getReadPos() < 10) {
LOG_WARNING("SpellDamageLog: truncated trailing fields");
data.isCrit = false;
return true;
packet.setReadPos(startPos);
return false;
}
uint8_t periodicLog = packet.readUInt8();