Add network update command
The user.updateNetwork function is a bit involved because we need to make sure that the upstream connection is closed before re-connecting (would otherwise cause "Nick already used" errors) and that the downstream connections' state is kept in sync. References: https://todo.sr.ht/~emersion/soju/17
This commit is contained in:
Simon Ser
parent
bee2001e29
commit
c709ebfc91
170
service.go
170
service.go
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@ -118,7 +118,7 @@ func init() {
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"network": {
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children: serviceCommandSet{
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"create": {
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usage: "-addr <addr> [-name name] [-username username] [-pass pass] [-realname realname] [-nick nick] [[-connect-command command] ...]",
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usage: "-addr <addr> [-name name] [-username username] [-pass pass] [-realname realname] [-nick nick] [-connect-command command]...",
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desc: "add a new network",
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handle: handleServiceCreateNetwork,
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},
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@ -126,6 +126,11 @@ func init() {
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desc: "show a list of saved networks and their current status",
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handle: handleServiceNetworkStatus,
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},
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"update": {
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usage: "[-addr addr] [-name name] [-username username] [-pass pass] [-realname realname] [-nick nick] [-connect-command command]...",
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desc: "update a network",
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handle: handleServiceNetworkUpdate,
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},
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"delete": {
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usage: "<name>",
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desc: "delete a network",
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@ -338,65 +343,115 @@ func newFlagSet() *flag.FlagSet {
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return fs
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}
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type stringSliceVar []string
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type stringSliceFlag []string
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func (v *stringSliceVar) String() string {
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func (v *stringSliceFlag) String() string {
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return fmt.Sprint([]string(*v))
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}
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func (v *stringSliceVar) Set(s string) error {
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func (v *stringSliceFlag) Set(s string) error {
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*v = append(*v, s)
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return nil
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}
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func handleServiceCreateNetwork(dc *downstreamConn, params []string) error {
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fs := newFlagSet()
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addr := fs.String("addr", "", "")
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name := fs.String("name", "", "")
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username := fs.String("username", "", "")
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pass := fs.String("pass", "", "")
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realname := fs.String("realname", "", "")
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nick := fs.String("nick", "", "")
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var connectCommands stringSliceVar
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fs.Var(&connectCommands, "connect-command", "")
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// stringPtrFlag is a flag value populating a string pointer. This allows to
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// disambiguate between a flag that hasn't been set and a flag that has been
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// set to an empty string.
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type stringPtrFlag struct {
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ptr **string
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}
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func (f stringPtrFlag) String() string {
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if *f.ptr == nil {
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return ""
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}
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return **f.ptr
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}
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func (f stringPtrFlag) Set(s string) error {
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*f.ptr = &s
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return nil
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}
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type networkFlagSet struct {
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*flag.FlagSet
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Addr, Name, Nick, Username, Pass, Realname *string
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ConnectCommands []string
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}
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func newNetworkFlagSet() *networkFlagSet {
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fs := &networkFlagSet{FlagSet: newFlagSet()}
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fs.Var(stringPtrFlag{&fs.Addr}, "addr", "")
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fs.Var(stringPtrFlag{&fs.Name}, "name", "")
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fs.Var(stringPtrFlag{&fs.Nick}, "nick", "")
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fs.Var(stringPtrFlag{&fs.Username}, "username", "")
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fs.Var(stringPtrFlag{&fs.Pass}, "pass", "")
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fs.Var(stringPtrFlag{&fs.Realname}, "realname", "")
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fs.Var((*stringSliceFlag)(&fs.ConnectCommands), "connect-command", "")
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return fs
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}
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func (fs *networkFlagSet) update(network *Network) error {
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if fs.Addr != nil {
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if addrParts := strings.SplitN(*fs.Addr, "://", 2); len(addrParts) == 2 {
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scheme := addrParts[0]
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switch scheme {
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case "ircs", "irc+insecure":
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default:
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return fmt.Errorf("unknown scheme %q (supported schemes: ircs, irc+insecure)", scheme)
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}
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}
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network.Addr = *fs.Addr
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}
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if fs.Name != nil {
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network.Name = *fs.Name
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}
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if fs.Nick != nil {
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network.Nick = *fs.Nick
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}
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if fs.Username != nil {
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network.Username = *fs.Username
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}
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if fs.Pass != nil {
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network.Pass = *fs.Pass
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}
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if fs.Realname != nil {
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network.Realname = *fs.Realname
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}
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if fs.ConnectCommands != nil {
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if len(fs.ConnectCommands) == 1 && fs.ConnectCommands[0] == "" {
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network.ConnectCommands = nil
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} else {
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for _, command := range fs.ConnectCommands {
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_, err := irc.ParseMessage(command)
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if err != nil {
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return fmt.Errorf("flag -connect-command must be a valid raw irc command string: %q: %v", command, err)
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}
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}
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network.ConnectCommands = fs.ConnectCommands
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}
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}
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return nil
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}
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func handleServiceCreateNetwork(dc *downstreamConn, params []string) error {
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fs := newNetworkFlagSet()
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if err := fs.Parse(params); err != nil {
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return err
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}
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if *addr == "" {
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if fs.Addr == nil {
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return fmt.Errorf("flag -addr is required")
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}
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if addrParts := strings.SplitN(*addr, "://", 2); len(addrParts) == 2 {
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scheme := addrParts[0]
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switch scheme {
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case "ircs", "irc+insecure":
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default:
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return fmt.Errorf("unknown scheme %q (supported schemes: ircs, irc+insecure)", scheme)
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}
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record := &Network{
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Addr: *fs.Addr,
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Nick: dc.nick,
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}
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if err := fs.update(record); err != nil {
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return err
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}
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for _, command := range connectCommands {
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_, err := irc.ParseMessage(command)
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if err != nil {
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return fmt.Errorf("flag -connect-command must be a valid raw irc command string: %q: %v", command, err)
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}
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}
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if *nick == "" {
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*nick = dc.nick
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}
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var err error
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network, err := dc.user.createNetwork(&Network{
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Addr: *addr,
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Name: *name,
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Username: *username,
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Pass: *pass,
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Realname: *realname,
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Nick: *nick,
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ConnectCommands: connectCommands,
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})
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network, err := dc.user.createNetwork(record)
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if err != nil {
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return fmt.Errorf("could not create network: %v", err)
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}
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@ -441,6 +496,35 @@ func handleServiceNetworkStatus(dc *downstreamConn, params []string) error {
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return nil
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}
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func handleServiceNetworkUpdate(dc *downstreamConn, params []string) error {
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if len(params) < 1 {
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return fmt.Errorf("expected exactly one argument")
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}
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fs := newNetworkFlagSet()
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if err := fs.Parse(params[1:]); err != nil {
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return err
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}
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net := dc.user.getNetwork(params[0])
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if net == nil {
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return fmt.Errorf("unknown network %q", params[0])
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}
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record := net.Network // copy network record because we'll mutate it
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if err := fs.update(&record); err != nil {
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return err
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}
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network, err := dc.user.updateNetwork(&record)
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if err != nil {
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return fmt.Errorf("could not update network: %v", err)
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}
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sendServicePRIVMSG(dc, fmt.Sprintf("updated network %q", network.GetName()))
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return nil
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}
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func handleServiceNetworkDelete(dc *downstreamConn, params []string) error {
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if len(params) != 1 {
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return fmt.Errorf("expected exactly one argument")
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173
user.go
173
user.go
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@ -272,6 +272,15 @@ func (u *user) getNetwork(name string) *network {
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return nil
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}
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func (u *user) getNetworkByID(id int64) *network {
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for _, net := range u.networks {
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if net.ID == id {
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return net
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}
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}
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return nil
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}
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func (u *user) run() {
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networks, err := u.srv.db.ListNetworks(u.Username)
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if err != nil {
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@ -309,31 +318,18 @@ func (u *user) run() {
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})
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uc.network.lastError = nil
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case eventUpstreamDisconnected:
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uc := e.uc
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uc.network.conn = nil
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for _, ml := range uc.messageLoggers {
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if err := ml.Close(); err != nil {
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uc.logger.Printf("failed to close message logger: %v", err)
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}
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}
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uc.endPendingLISTs(true)
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uc.forEachDownstream(func(dc *downstreamConn) {
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dc.updateSupportedCaps()
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})
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if uc.network.lastError == nil {
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uc.forEachDownstream(func(dc *downstreamConn) {
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sendServiceNOTICE(dc, fmt.Sprintf("disconnected from %s", uc.network.GetName()))
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})
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}
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u.handleUpstreamDisconnected(e.uc)
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case eventUpstreamConnectionError:
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net := e.net
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if net.lastError == nil || net.lastError.Error() != e.err.Error() {
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stopped := false
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select {
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case <-net.stopped:
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stopped = true
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default:
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}
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if !stopped && (net.lastError == nil || net.lastError.Error() != e.err.Error()) {
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net.forEachDownstream(func(dc *downstreamConn) {
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sendServiceNOTICE(dc, fmt.Sprintf("failed connecting/registering to %s: %v", net.GetName(), e.err))
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})
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@ -425,45 +421,128 @@ func (u *user) run() {
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}
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}
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func (u *user) createNetwork(net *Network) (*network, error) {
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if net.ID != 0 {
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func (u *user) handleUpstreamDisconnected(uc *upstreamConn) {
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uc.network.conn = nil
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for _, ml := range uc.messageLoggers {
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if err := ml.Close(); err != nil {
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uc.logger.Printf("failed to close message logger: %v", err)
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}
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}
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uc.endPendingLISTs(true)
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uc.forEachDownstream(func(dc *downstreamConn) {
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dc.updateSupportedCaps()
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})
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if uc.network.lastError == nil {
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uc.forEachDownstream(func(dc *downstreamConn) {
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sendServiceNOTICE(dc, fmt.Sprintf("disconnected from %s", uc.network.GetName()))
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})
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}
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}
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func (u *user) addNetwork(network *network) {
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u.networks = append(u.networks, network)
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go network.run()
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}
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func (u *user) removeNetwork(network *network) {
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network.stop()
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u.forEachDownstream(func(dc *downstreamConn) {
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if dc.network != nil && dc.network == network {
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dc.Close()
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}
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})
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for i, net := range u.networks {
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if net == network {
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u.networks = append(u.networks[:i], u.networks[i+1:]...)
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return
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}
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}
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panic("tried to remove a non-existing network")
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}
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func (u *user) createNetwork(record *Network) (*network, error) {
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if record.ID != 0 {
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panic("tried creating an already-existing network")
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}
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network := newNetwork(u, net, nil)
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network := newNetwork(u, record, nil)
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err := u.srv.db.StoreNetwork(u.Username, &network.Network)
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if err != nil {
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return nil, err
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}
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u.networks = append(u.networks, network)
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u.addNetwork(network)
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go network.run()
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return network, nil
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}
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func (u *user) deleteNetwork(id int64) error {
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for i, net := range u.networks {
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if net.ID != id {
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continue
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}
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if err := u.srv.db.DeleteNetwork(net.ID); err != nil {
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return err
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}
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u.forEachDownstream(func(dc *downstreamConn) {
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if dc.network != nil && dc.network == net {
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dc.Close()
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}
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})
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net.stop()
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u.networks = append(u.networks[:i], u.networks[i+1:]...)
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return nil
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func (u *user) updateNetwork(record *Network) (*network, error) {
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if record.ID == 0 {
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panic("tried updating a new network")
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}
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panic("tried deleting a non-existing network")
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network := u.getNetworkByID(record.ID)
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if network == nil {
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panic("tried updating a non-existing network")
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}
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if err := u.srv.db.StoreNetwork(u.Username, record); err != nil {
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return nil, err
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}
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// Most network changes require us to re-connect to the upstream server
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channels := make([]Channel, 0, len(network.channels))
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for _, ch := range network.channels {
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channels = append(channels, *ch)
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}
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updatedNetwork := newNetwork(u, record, channels)
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// If we're currently connected, disconnect and perform the necessary
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// bookkeeping
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if network.conn != nil {
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network.stop()
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// Note: this will set network.conn to nil
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u.handleUpstreamDisconnected(network.conn)
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}
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// Patch downstream connections to use our fresh updated network
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u.forEachDownstream(func(dc *downstreamConn) {
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if dc.network != nil && dc.network == network {
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dc.network = updatedNetwork
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}
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})
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// We need to remove the network after patching downstream connections,
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// otherwise they'll get closed
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u.removeNetwork(network)
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// This will re-connect to the upstream server
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u.addNetwork(updatedNetwork)
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return updatedNetwork, nil
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}
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func (u *user) deleteNetwork(id int64) error {
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network := u.getNetworkByID(id)
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if network == nil {
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panic("tried deleting a non-existing network")
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}
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if err := u.srv.db.DeleteNetwork(network.ID); err != nil {
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return err
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}
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u.removeNetwork(network)
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return nil
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}
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func (u *user) updatePassword(hashed string) error {
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Loading…
Reference in New Issue