325 lines
10 KiB
Go
325 lines
10 KiB
Go
// Copyright (c) 2018 Shivaram Lingamneni <slingamn@cs.stanford.edu>
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// released under the MIT license
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package irc
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import (
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"errors"
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"fmt"
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"regexp"
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"time"
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)
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const hostservHelp = `HostServ lets you manage your vhost (i.e., the string displayed
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in place of your client's hostname/IP).
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To see in-depth help for a specific HostServ command, try:
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$b/HS HELP <command>$b
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Here are the commands you can use:
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%s`
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var (
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errVHostBadCharacters = errors.New("Vhost contains prohibited characters")
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errVHostTooLong = errors.New("Vhost is too long")
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// ascii only for now
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defaultValidVhostRegex = regexp.MustCompile(`^[0-9A-Za-z.\-_/]+$`)
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)
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func hostservEnabled(config *Config) bool {
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return config.Accounts.VHosts.Enabled
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}
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func hostservRequestsEnabled(config *Config) bool {
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return config.Accounts.VHosts.Enabled && config.Accounts.VHosts.UserRequests.Enabled
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}
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var (
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hostservCommands = map[string]*serviceCommand{
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"on": {
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handler: hsOnOffHandler,
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help: `Syntax: $bON$b
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ON enables your vhost, if you have one approved.`,
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helpShort: `$bON$b enables your vhost, if you have one approved.`,
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authRequired: true,
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enabled: hostservEnabled,
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},
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"off": {
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handler: hsOnOffHandler,
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help: `Syntax: $bOFF$b
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OFF disables your vhost, if you have one approved.`,
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helpShort: `$bOFF$b disables your vhost, if you have one approved.`,
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authRequired: true,
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enabled: hostservEnabled,
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},
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"request": {
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handler: hsRequestHandler,
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help: `Syntax: $bREQUEST <vhost>$b
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REQUEST requests that a new vhost by assigned to your account. The request must
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then be approved by a server operator.`,
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helpShort: `$bREQUEST$b requests a new vhost, pending operator approval.`,
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authRequired: true,
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enabled: hostservRequestsEnabled,
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minParams: 1,
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},
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"status": {
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handler: hsStatusHandler,
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help: `Syntax: $bSTATUS [user]$b
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STATUS displays your current vhost, if any, and the status of your most recent
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request for a new one. A server operator can view someone else's status.`,
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helpShort: `$bSTATUS$b shows your vhost and request status.`,
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enabled: hostservEnabled,
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},
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"set": {
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handler: hsSetHandler,
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help: `Syntax: $bSET <user> <vhost>$b
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SET sets a user's vhost, bypassing the request system.`,
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helpShort: `$bSET$b sets a user's vhost.`,
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capabs: []string{"vhosts"},
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enabled: hostservEnabled,
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minParams: 2,
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},
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"del": {
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handler: hsSetHandler,
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help: `Syntax: $bDEL <user>$b
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DEL deletes a user's vhost.`,
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helpShort: `$bDEL$b deletes a user's vhost.`,
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capabs: []string{"vhosts"},
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enabled: hostservEnabled,
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minParams: 1,
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},
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"waiting": {
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handler: hsWaitingHandler,
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help: `Syntax: $bWAITING$b
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WAITING shows a list of pending vhost requests, which can then be approved
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or rejected.`,
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helpShort: `$bWAITING$b shows a list of pending vhost requests.`,
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capabs: []string{"vhosts"},
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enabled: hostservEnabled,
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},
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"approve": {
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handler: hsApproveHandler,
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help: `Syntax: $bAPPROVE <user>$b
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APPROVE approves a user's vhost request.`,
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helpShort: `$bAPPROVE$b approves a user's vhost request.`,
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capabs: []string{"vhosts"},
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enabled: hostservEnabled,
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minParams: 1,
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},
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"reject": {
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handler: hsRejectHandler,
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help: `Syntax: $bREJECT <user> [<reason>]$b
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REJECT rejects a user's vhost request, optionally giving them a reason
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for the rejection.`,
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helpShort: `$bREJECT$b rejects a user's vhost request.`,
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capabs: []string{"vhosts"},
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enabled: hostservEnabled,
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minParams: 1,
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maxParams: 2,
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unsplitFinalParam: true,
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},
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}
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)
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// hsNotice sends the client a notice from HostServ
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func hsNotice(rb *ResponseBuffer, text string) {
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rb.Add(nil, "HostServ!HostServ@localhost", "NOTICE", rb.target.Nick(), text)
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}
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// hsNotifyChannel notifies the designated channel of new vhost activity
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func hsNotifyChannel(server *Server, message string) {
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chname := server.AccountConfig().VHosts.UserRequests.Channel
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channel := server.channels.Get(chname)
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if channel == nil {
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return
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}
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chname = channel.Name()
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for _, client := range channel.Members() {
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client.Send(nil, "HostServ", "PRIVMSG", chname, message)
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}
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}
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func hsOnOffHandler(server *Server, client *Client, command string, params []string, rb *ResponseBuffer) {
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enable := false
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if command == "on" {
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enable = true
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}
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_, err := server.accounts.VHostSetEnabled(client, enable)
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if err == errNoVhost {
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hsNotice(rb, client.t(err.Error()))
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} else if err != nil {
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hsNotice(rb, client.t("An error occurred"))
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} else if enable {
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hsNotice(rb, client.t("Successfully enabled your vhost"))
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} else {
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hsNotice(rb, client.t("Successfully disabled your vhost"))
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}
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}
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func hsRequestHandler(server *Server, client *Client, command string, params []string, rb *ResponseBuffer) {
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vhost := params[0]
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if validateVhost(server, vhost, false) != nil {
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hsNotice(rb, client.t("Invalid vhost"))
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return
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}
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accountName := client.Account()
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account, err := server.accounts.LoadAccount(client.Account())
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if err != nil {
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hsNotice(rb, client.t("An error occurred"))
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return
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}
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elapsed := time.Since(account.VHost.LastRequestTime)
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remainingTime := server.AccountConfig().VHosts.UserRequests.Cooldown - elapsed
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// you can update your existing request, but if you were rejected,
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// you can't spam a replacement request
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if account.VHost.RequestedVHost == "" && remainingTime > 0 {
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hsNotice(rb, fmt.Sprintf(client.t("You must wait an additional %v before making another request"), remainingTime))
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return
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}
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_, err = server.accounts.VHostRequest(accountName, vhost)
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if err != nil {
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hsNotice(rb, client.t("An error occurred"))
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} else {
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hsNotice(rb, fmt.Sprintf(client.t("Your vhost request will be reviewed by an administrator")))
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chanMsg := fmt.Sprintf("Account %s requests vhost %s", accountName, vhost)
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hsNotifyChannel(server, chanMsg)
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// TODO send admins a snomask of some kind
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}
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}
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func hsStatusHandler(server *Server, client *Client, command string, params []string, rb *ResponseBuffer) {
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var accountName string
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if len(params) > 0 {
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if !client.HasRoleCapabs("vhosts") {
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hsNotice(rb, client.t("Command restricted"))
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return
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}
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accountName = params[0]
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} else {
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accountName = client.Account()
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if accountName == "" {
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hsNotice(rb, client.t("You're not logged into an account"))
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return
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}
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}
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account, err := server.accounts.LoadAccount(accountName)
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if err != nil {
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if err != errAccountDoesNotExist {
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server.logger.Warning("internal", "error loading account info", accountName, err.Error())
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}
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hsNotice(rb, client.t("No such account"))
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return
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}
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if account.VHost.ApprovedVHost != "" {
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hsNotice(rb, fmt.Sprintf(client.t("Account %[1]s has vhost: %[2]s"), accountName, account.VHost.ApprovedVHost))
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if !account.VHost.Enabled {
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hsNotice(rb, fmt.Sprintf(client.t("This vhost is currently disabled, but can be enabled with /HS ON")))
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}
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} else {
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hsNotice(rb, fmt.Sprintf(client.t("Account %s has no vhost"), accountName))
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}
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if account.VHost.RequestedVHost != "" {
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hsNotice(rb, fmt.Sprintf(client.t("A request is pending for vhost: %s"), account.VHost.RequestedVHost))
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}
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if account.VHost.RejectedVHost != "" {
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hsNotice(rb, fmt.Sprintf(client.t("A request was previously made for vhost: %s"), account.VHost.RejectedVHost))
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hsNotice(rb, fmt.Sprintf(client.t("It was rejected for reason: %s"), account.VHost.RejectionReason))
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}
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}
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func validateVhost(server *Server, vhost string, oper bool) error {
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ac := server.AccountConfig()
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if len(vhost) > ac.VHosts.MaxLength {
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return errVHostTooLong
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}
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if !ac.VHosts.ValidRegexp.MatchString(vhost) {
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return errVHostBadCharacters
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}
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return nil
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}
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func hsSetHandler(server *Server, client *Client, command string, params []string, rb *ResponseBuffer) {
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user := params[0]
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var vhost string
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if command == "set" {
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vhost = params[1]
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if validateVhost(server, vhost, true) != nil {
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hsNotice(rb, client.t("Invalid vhost"))
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return
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}
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}
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// else: command == "del", vhost == ""
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_, err := server.accounts.VHostSet(user, vhost)
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if err != nil {
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hsNotice(rb, client.t("An error occurred"))
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} else if vhost != "" {
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hsNotice(rb, client.t("Successfully set vhost"))
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} else {
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hsNotice(rb, client.t("Successfully cleared vhost"))
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}
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}
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func hsWaitingHandler(server *Server, client *Client, command string, params []string, rb *ResponseBuffer) {
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requests, total := server.accounts.VHostListRequests(10)
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hsNotice(rb, fmt.Sprintf(client.t("There are %[1]d pending requests for vhosts (%[2]d displayed)"), total, len(requests)))
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for i, request := range requests {
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hsNotice(rb, fmt.Sprintf(client.t("%[1]d. User %[2]s requests vhost: %[3]s"), i+1, request.Account, request.RequestedVHost))
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}
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}
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func hsApproveHandler(server *Server, client *Client, command string, params []string, rb *ResponseBuffer) {
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user := params[0]
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vhostInfo, err := server.accounts.VHostApprove(user)
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if err != nil {
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hsNotice(rb, client.t("An error occurred"))
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} else {
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hsNotice(rb, fmt.Sprintf(client.t("Successfully approved vhost request for %s"), user))
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chanMsg := fmt.Sprintf("Oper %[1]s approved vhost %[2]s for account %[3]s", client.Nick(), vhostInfo.ApprovedVHost, user)
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hsNotifyChannel(server, chanMsg)
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for _, client := range server.accounts.AccountToClients(user) {
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client.Notice(client.t("Your vhost request was approved by an administrator"))
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}
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}
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}
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func hsRejectHandler(server *Server, client *Client, command string, params []string, rb *ResponseBuffer) {
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var reason string
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user := params[0]
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if len(params) > 1 {
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reason = params[1]
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}
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vhostInfo, err := server.accounts.VHostReject(user, reason)
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if err != nil {
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hsNotice(rb, client.t("An error occurred"))
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} else {
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hsNotice(rb, fmt.Sprintf(client.t("Successfully rejected vhost request for %s"), user))
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chanMsg := fmt.Sprintf("Oper %s rejected vhost %s for account %s, with the reason: %v", client.Nick(), vhostInfo.RejectedVHost, user, reason)
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hsNotifyChannel(server, chanMsg)
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for _, client := range server.accounts.AccountToClients(user) {
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if reason == "" {
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client.Notice("Your vhost request was rejected by an administrator")
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} else {
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client.Notice(fmt.Sprintf(client.t("Your vhost request was rejected by an administrator. The reason given was: %s"), reason))
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}
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}
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}
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}
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