fix

cmd/telesrv-admin/buildinfo.go

@@ -0,0 +1,45 @@
+package main
+
+import "runtime/debug"
+
+// gitCommit/buildTime can be set via -ldflags "-X main.gitCommit=... -X
+// main.buildTime=...", mirroring cmd/telesrv/buildinfo.go -- but in
+// practice neither procctl's goBuild (used by the admin panel's own
+// Restart/Update) nor a plain `go build` sets them, so this normally falls
+// back to Go's automatic VCS stamping (debug.ReadBuildInfo's vcs.revision),
+// which needs nothing extra to work from a git checkout.
+var (
+	gitCommit = ""
+	buildTime = ""
+)
+
+type buildMetadata struct {
+	Commit    string
+	Dirty     bool
+	BuildTime string
+}
+
+// shortCommit is what the sidebar footer shows next to "Version: O7" -- the
+// full hash is one click away in git log, the footer just needs enough to
+// tell two builds apart at a glance.
+func (m buildMetadata) shortCommit() string {
+	if len(m.Commit) > 7 {
+		return m.Commit[:7]
+	}
+	return m.Commit
+}
+
+func currentBuildMetadata() buildMetadata {
+	meta := buildMetadata{Commit: gitCommit, BuildTime: buildTime}
+	if info, ok := debug.ReadBuildInfo(); ok {
+		settings := map[string]string{}
+		for _, setting := range info.Settings {
+			settings[setting.Key] = setting.Value
+		}
+		if meta.Commit == "" {
+			meta.Commit = settings["vcs.revision"]
+		}
+		meta.Dirty = settings["vcs.modified"] == "true"
+	}
+	return meta
+}