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normalize metadata keys in sub/unsub

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This commit is contained in:
Shivaram Lingamneni 2025-06-22 05:20:30 -04:00
parent 401a16365a
commit 0bec0a81a1
2 changed files with 12 additions and 4 deletions
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12
irc/handlers.go
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@ -3316,10 +3316,18 @@ func metadataUnregisteredHandler(client *Client, config *Config, subcommand stri
// metadataSubsHandler handles subscription-related commands;
// these are handled the same whether the client is registered or not
func metadataSubsHandler(client *Client, subcommand string, params []string, rb *ResponseBuffer) (exiting bool) {
allToLower := func(in []string) (out []string) {
out = make([]string, len(in))
for i, s := range in {
out[i] = strings.ToLower(s)
}
return out
}
server := client.server
switch subcommand {
case "sub":
keys := params[2:]
keys := allToLower(params[2:])
for _, key := range keys {
if metadataKeyIsEvil(key) {
rb.Add(nil, server.name, "FAIL", "METADATA", "KEY_INVALID", utils.SafeErrorParam(key), client.t("Invalid key name"))
@ -3341,7 +3349,7 @@ func metadataSubsHandler(client *Client, subcommand string, params []string, rb
}
case "unsub":
keys := params[2:]
keys := allToLower(params[2:])
removed := rb.session.UnsubscribeFrom(keys...)
lineLength := MaxLineLen - len(server.name) - len(RPL_METADATAUNSUBOK) - len(client.Nick()) - 10