Changeset 436 in code for trunk/service.go

Timestamp:

Dec 14, 2020, 7:54:02 PM (4 years ago)

Author:

delthas

Message:

service: Introduce channel update

This adds the channel update service command, which is used to set the
auto-detach, auto-reattach, and message relaying settings of a channel.

Of note is that currently the parser parses # as a comment, which
means any channel update #foo ... will actually need to be escaped to
channel update "#foo" ...

File:

• trunk/service.go (modified) (3 diffs)

trunk/service.go

@@ -219 +219 @@
                         handle: handlePasswordChange,
                 },
+                "channel": {
+                        children: serviceCommandSet{
+                                "update": {
+                                        usage:  "<name> [-relay-detached <default|none|highlight|message>] [-reattach-on <default|none|highlight|message>] [-detach-after <duration>] [-detach-on <default|none|highlight|message>]",
+                                        desc:   "update a channel",
+                                        handle: handleServiceChannelUpdate,
+                                },
+                        },
+                },
         }
 }
@@ -428 +437 @@
 func handleServiceNetworkUpdate(dc *downstreamConn, params []string) error {
         if len(params) < 1 {
-                return fmt.Errorf("expected exactly one argument")
+                return fmt.Errorf("expected at least one argument")
         }
 
@@ -697 +706 @@
         return nil
 }
+
+type channelFlagSet struct {
+        *flag.FlagSet
+        RelayDetached, ReattachOn, DetachAfter, DetachOn *string
+}
+
+func newChannelFlagSet() *channelFlagSet {
+        fs := &channelFlagSet{FlagSet: newFlagSet()}
+        fs.Var(stringPtrFlag{&fs.RelayDetached}, "relay-detached", "")
+        fs.Var(stringPtrFlag{&fs.ReattachOn}, "reattach-on", "")
+        fs.Var(stringPtrFlag{&fs.DetachAfter}, "detach-after", "")
+        fs.Var(stringPtrFlag{&fs.DetachOn}, "detach-on", "")
+        return fs
+}
+
+func (fs *channelFlagSet) update(channel *Channel) error {
+        if fs.RelayDetached != nil {
+                filter, err := parseFilter(*fs.RelayDetached)
+                if err != nil {
+                        return err
+                }
+                channel.RelayDetached = filter
+        }
+        if fs.ReattachOn != nil {
+                filter, err := parseFilter(*fs.ReattachOn)
+                if err != nil {
+                        return err
+                }
+                channel.ReattachOn = filter
+        }
+        if fs.DetachAfter != nil {
+                dur, err := time.ParseDuration(*fs.DetachAfter)
+                if err != nil || dur < 0 {
+                        return fmt.Errorf("unknown duration for -detach-after %q (duration format: 0, 300s, 22h30m, ...)", *fs.DetachAfter)
+                }
+                channel.DetachAfter = dur
+        }
+        if fs.DetachOn != nil {
+                filter, err := parseFilter(*fs.DetachOn)
+                if err != nil {
+                        return err
+                }
+                channel.DetachOn = filter
+        }
+        return nil
+}
+
+func handleServiceChannelUpdate(dc *downstreamConn, params []string) error {
+        if len(params) < 1 {
+                return fmt.Errorf("expected at least one argument")
+        }
+        name := params[0]
+
+        fs := newChannelFlagSet()
+        if err := fs.Parse(params[1:]); err != nil {
+                return err
+        }
+
+        uc, upstreamName, err := dc.unmarshalEntity(name)
+        if err != nil {
+                return fmt.Errorf("unknown channel %q", name)
+        }
+
+        ch, ok := uc.network.channels[upstreamName]
+        if !ok {
+                return fmt.Errorf("unknown channel %q", name)
+        }
+
+        if err := fs.update(ch); err != nil {
+                return err
+        }
+
+        uc.updateChannelAutoDetach(upstreamName)
+
+        if err := dc.srv.db.StoreChannel(uc.network.ID, ch); err != nil {
+                return fmt.Errorf("failed to update channel: %v", err)
+        }
+
+        sendServicePRIVMSG(dc, fmt.Sprintf("updated channel %q", name))
+        return nil
+}