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some tweaks to account/channel unregistration

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This commit is contained in:
Shivaram Lingamneni 2018-06-19 04:03:40 -04:00
parent f4a284675d
commit 02a4aaf583
4 changed files with 45 additions and 25 deletions
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22
irc/chanserv.go
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@ -10,6 +10,7 @@ import (
"sort"
"strconv"
"strings"
"time"
"github.com/goshuirc/irc-go/ircfmt"
"github.com/oragono/oragono/irc/modes"
@ -287,15 +288,10 @@ func csUnregisterHandler(server *Server, client *Client, command, params string,
}
info := channel.ExportRegistration(0)
// verification code is the crc32 of the name, plus the registration time
var codeInput bytes.Buffer
codeInput.WriteString(info.Name)
codeInput.WriteString(strconv.FormatInt(info.RegisteredAt.Unix(), 16))
expectedCode := int(crc32.ChecksumIEEE(codeInput.Bytes()))
receivedCode, err := strconv.Atoi(verificationCode)
if err != nil || expectedCode != receivedCode {
csNotice(rb, client.t("$bWarning:$b Unregistering this channel will remove all stored channel attributes."))
csNotice(rb, fmt.Sprintf(client.t("To confirm channel unregistration, type: /CS UNREGISTER %s %d"), channelKey, expectedCode))
expectedCode := unregisterConfirmationCode(info.Name, info.RegisteredAt)
if expectedCode != verificationCode {
csNotice(rb, ircfmt.Unescape(client.t("$bWarning: unregistering this channel will remove all stored channel attributes.$b")))
csNotice(rb, fmt.Sprintf(client.t("To confirm channel unregistration, type: /CS UNREGISTER %s %s"), channelKey, expectedCode))
return
}
@ -303,3 +299,11 @@ func csUnregisterHandler(server *Server, client *Client, command, params string,
go server.channelRegistry.Delete(channelKey, info)
csNotice(rb, fmt.Sprintf(client.t("Channel %s is now unregistered"), channelKey))
}
// deterministically generates a confirmation code for unregistering a channel / account
func unregisterConfirmationCode(name string, registeredAt time.Time) (code string) {
var codeInput bytes.Buffer
codeInput.WriteString(name)
codeInput.WriteString(strconv.FormatInt(registeredAt.Unix(), 16))
return strconv.Itoa(int(crc32.ChecksumIEEE(codeInput.Bytes())))
}