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Fix a crash in rednet repeat

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This crash can be triggered remotely by specially constructed rednet messages, making this a bit of a problem, as any repeaters can be remotely crashed.
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Oliver Marks 2018-09-08 21:55:36 +01:00 committed by GitHub
parent 914df8b0c7
commit b008edae90
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1 changed files with 1 additions and 1 deletions
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src/main/resources/assets/computercraft/lua/rom/programs/rednet/repeat.lua
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@ -44,7 +44,7 @@ local ok, error = pcall( function()
if sEvent == "modem_message" then if sEvent == "modem_message" then
-- Got a modem message, rebroadcast it if it's a rednet thing -- Got a modem message, rebroadcast it if it's a rednet thing
if nChannel == rednet.CHANNEL_REPEAT then if nChannel == rednet.CHANNEL_REPEAT then
if type( tMessage ) == "table" and tMessage.nMessageID and tMessage.nRecipient then if type( tMessage ) == "table" and tMessage.nMessageID and tMessage.nRecipient and type(tMessage.nRecipient) == "number" then
if not tReceivedMessages[ tMessage.nMessageID ] then if not tReceivedMessages[ tMessage.nMessageID ] then
-- Ensure we only repeat a message once -- Ensure we only repeat a message once
tReceivedMessages[ tMessage.nMessageID ] = true tReceivedMessages[ tMessage.nMessageID ] = true