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mirror of https://github.com/ergochat/ergo.git synced 2024-11-22 11:59:40 +01:00

some tweaks to account/channel unregistration

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

View File

@ -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())))
}

View File

@ -255,7 +255,10 @@ func umodeGreaterThan(l modes.Mode, r modes.Mode) bool {
// ProcessAccountToUmodeChange processes Add/Remove/List operations for channel persistent usermodes.
func (channel *Channel) ProcessAccountToUmodeChange(client *Client, change modes.ModeChange) (results []modes.ModeChange, err error) {
umodeGEQ := func(l modes.Mode, r modes.Mode) bool {
hasPrivsOver := func(l modes.Mode, r modes.Mode) bool {
if l == modes.ChannelAdmin {
return umodeGreaterThan(l, r)
}
return l == r || umodeGreaterThan(l, r)
}
@ -275,9 +278,9 @@ func (channel *Channel) ProcessAccountToUmodeChange(client *Client, change modes
// operators and founders can do anything
hasPrivs := isOperChange || (account != "" && account == channel.registeredFounder)
// halfop and up can list, and do add/removes at levels <= their own
if change.Op == modes.List && umodeGEQ(clientMode, modes.Halfop) {
if change.Op == modes.List && hasPrivsOver(clientMode, modes.Halfop) {
hasPrivs = true
} else if umodeGEQ(clientMode, modes.Halfop) && umodeGEQ(clientMode, targetModeNow) && umodeGEQ(clientMode, targetModeAfter) {
} else if hasPrivsOver(clientMode, modes.Halfop) && hasPrivsOver(clientMode, targetModeNow) && hasPrivsOver(clientMode, targetModeAfter) {
hasPrivs = true
}
if !hasPrivs {

View File

@ -7,6 +7,7 @@ import (
"fmt"
"strings"
"github.com/goshuirc/irc-go/ircfmt"
"github.com/oragono/oragono/irc/utils"
)
@ -98,10 +99,12 @@ SADROP forcibly de-links the given nickname from the attached user account.`,
},
"unregister": {
handler: nsUnregisterHandler,
help: `Syntax: $bUNREGISTER [username]$b
help: `Syntax: $bUNREGISTER <username> [code]$b
UNREGISTER lets you delete your user account (or the given one, if you're an
IRC operator with the correct permissions).`,
UNREGISTER lets you delete your user account (or someone else's, if you're an
IRC operator with the correct permissions). To prevent accidental
unregistrations, a verification code is required; invoking the command without
a code will display the necessary code.`,
helpShort: `$bUNREGISTER$b lets you delete your user account.`,
},
"verify": {
@ -316,7 +319,7 @@ func nsRegisterHandler(server *Server, client *Client, command, params string, r
}
func nsUnregisterHandler(server *Server, client *Client, command, params string, rb *ResponseBuffer) {
username, _ := utils.ExtractParam(params)
username, verificationCode := utils.ExtractParam(params)
if !server.AccountConfig().Registration.Enabled {
nsNotice(rb, client.t("Account registration has been disabled"))
@ -324,22 +327,32 @@ func nsUnregisterHandler(server *Server, client *Client, command, params string,
}
if username == "" {
username = client.Account()
}
if username == "" {
nsNotice(rb, client.t("You're not logged into an account"))
nsNotice(rb, client.t("You must specify an account"))
return
}
cfname, err := CasefoldName(username)
if err != nil {
nsNotice(rb, client.t("Invalid username"))
account, err := server.accounts.LoadAccount(username)
if err == errAccountDoesNotExist {
nsNotice(rb, client.t("Invalid account name"))
return
} else if err != nil {
nsNotice(rb, client.t("Internal error"))
return
}
if !(cfname == client.Account() || client.HasRoleCapabs("unregister")) {
cfname, _ := CasefoldName(username)
if !(cfname == client.Account() || client.HasRoleCapabs("accreg")) {
nsNotice(rb, client.t("Insufficient oper privs"))
return
}
expectedCode := unregisterConfirmationCode(account.Name, account.RegisteredAt)
if expectedCode != verificationCode {
nsNotice(rb, ircfmt.Unescape(client.t("$bWarning: unregistering this account will remove its stored privileges.$b")))
nsNotice(rb, fmt.Sprintf(client.t("To confirm account unregistration, type: /NS UNREGISTER %s %s"), cfname, expectedCode))
return
}
if cfname == client.Account() {
client.server.accounts.Logout(client)
}

View File

@ -280,7 +280,7 @@ oper-classes:
capabilities:
- "oper:rehash"
- "oper:die"
- "unregister"
- "accreg"
- "sajoin"
- "samode"
- "vhosts"