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PROXY: Make sure given IPs are valid and pass them through appropriately

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This commit is contained in:
Daniel Oaks 2017-09-11 17:00:58 +10:00
parent 7d140c9e43
commit 38498b752b
1 changed files with 12 additions and 0 deletions
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12
irc/server.go
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@ -2239,9 +2239,21 @@ func proxyHandler(server *Server, client *Client, msg ircmsg.IrcMessage) bool {
clientHostname := client.hostname clientHostname := client.hostname
for _, address := range server.proxyAllowedFrom { for _, address := range server.proxyAllowedFrom {
if clientHostname == address || clientAddress == address { if clientHostname == address || clientAddress == address {
proxiedIP := msg.Params[1]
// ensure IP is sane
parsedProxiedIP := net.ParseIP(proxiedIP)
if parsedProxiedIP == nil {
client.Quit(fmt.Sprintf("Proxied IP address is not valid: [%s]", proxiedIP))
return true
}
//TODO(dan): check DLINEs and connection throttling/limits //TODO(dan): check DLINEs and connection throttling/limits
// override the client's regular IP
client.proxiedIP = msg.Params[1] client.proxiedIP = msg.Params[1]
client.hostname = LookupHostname(msg.Params[1]) client.hostname = LookupHostname(msg.Params[1])
client.rawHostname = LookupHostname(msg.Params[1])
return false return false
} }
} }