config: add RPC command to reload config

Signed-off-by: Steffen Vogel <post@steffenvogel.de>

cmd/cunicu/reload.go

@@ -0,0 +1,28 @@
+package main
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/spf13/cobra"
+	"github.com/stv0g/cunicu/pkg/proto"
+)
+
+var reloadCmd = &cobra.Command{
+	Use:   "reload",
+	Short: "Reload the configuration of the cunīcu daemon",
+	RunE:  reload,
+	Args:  cobra.NoArgs,
+}
+
+func init() {
+	addClientCommand(rootCmd, reloadCmd)
+}
+
+func reload(cmd *cobra.Command, args []string) error {
+	if _, err := rpcClient.ReloadConfig(context.Background(), &proto.Empty{}); err != nil {
+		return fmt.Errorf("failed RPC request: %w", err)
+	}
+
+	return nil
+}

docs/usage/man/cunicu-reload.1

@@ -0,0 +1,49 @@
+.nh
+.TH "cunīcu" "1" "Sep 2022" "https://github.com/stv0g/cunicu" ""
+
+.SH NAME
+.PP
+cunicu-reload - Reload the configuration of the cunīcu daemon
+
+
+.SH SYNOPSIS
+.PP
+\fBcunicu reload [flags]\fP
+
+
+.SH DESCRIPTION
+.PP
+Reload the configuration of the cunīcu daemon
+
+
+.SH OPTIONS
+.PP
+\fB-h\fP, \fB--help\fP[=false]
+	help for reload
+
+.PP
+\fB-s\fP, \fB--rpc-socket\fP="/var/run/cunicu.sock"
+	Unix control and monitoring socket
+
+
+.SH OPTIONS INHERITED FROM PARENT COMMANDS
+.PP
+\fB-C\fP, \fB--color\fP="auto"
+	Enable colorization of output (one of: auto, always, never)
+
+.PP
+\fB-l\fP, \fB--log-file\fP=""
+	path of a file to write logs to
+
+.PP
+\fB-d\fP, \fB--log-level\fP="info"
+	log level (one of: debug, info, warn, error, dpanic, panic, and fatal)
+
+.PP
+\fB-v\fP, \fB--verbose\fP=0
+	verbosity level
+
+
+.SH SEE ALSO
+.PP
+\fBcunicu(1)\fP

docs/usage/man/cunicu.1

@@ -40,4 +40,4 @@ It relies on the awesome pion/ice package for the interactive connectivity estab
 
 .SH SEE ALSO
 .PP
-\fBcunicu-addresses(1)\fP, \fBcunicu-completion(1)\fP, \fBcunicu-config(1)\fP, \fBcunicu-daemon(1)\fP, \fBcunicu-monitor(1)\fP, \fBcunicu-relay(1)\fP, \fBcunicu-restart(1)\fP, \fBcunicu-selfupdate(1)\fP, \fBcunicu-signal(1)\fP, \fBcunicu-status(1)\fP, \fBcunicu-stop(1)\fP, \fBcunicu-sync(1)\fP, \fBcunicu-version(1)\fP, \fBcunicu-wg(1)\fP
+\fBcunicu-addresses(1)\fP, \fBcunicu-completion(1)\fP, \fBcunicu-config(1)\fP, \fBcunicu-daemon(1)\fP, \fBcunicu-monitor(1)\fP, \fBcunicu-relay(1)\fP, \fBcunicu-reload(1)\fP, \fBcunicu-restart(1)\fP, \fBcunicu-selfupdate(1)\fP, \fBcunicu-signal(1)\fP, \fBcunicu-status(1)\fP, \fBcunicu-stop(1)\fP, \fBcunicu-sync(1)\fP, \fBcunicu-version(1)\fP, \fBcunicu-wg(1)\fP

docs/usage/md/cunicu.md

@@ -33,6 +33,7 @@ It relies on the awesome pion/ice package for the interactive connectivity estab
 * [cunicu daemon](cunicu_daemon.md)	 - Start the daemon
 * [cunicu monitor](cunicu_monitor.md)	 - Monitor the cunīcu daemon for events
 * [cunicu relay](cunicu_relay.md)	 - Start relay API server
+* [cunicu reload](cunicu_reload.md)	 - Reload the configuration of the cunīcu daemon
 * [cunicu restart](cunicu_restart.md)	 - Restart the cunīcu daemon
 * [cunicu selfupdate](cunicu_selfupdate.md)	 - Update the cunīcu binary
 * [cunicu signal](cunicu_signal.md)	 - Start gRPC signaling server

docs/usage/md/cunicu_reload.md

@@ -0,0 +1,38 @@
+---
+title: cunicu reload
+sidebar_label: reload
+sidebar_class_name: command-name
+slug: /usage/man/reload
+hide_title: true
+keywords:
+    - manpage
+---
+
+## cunicu reload
+
+Reload the configuration of the cunīcu daemon
+
+```
+cunicu reload [flags]
+```
+
+### Options
+
+```
+  -h, --help                help for reload
+  -s, --rpc-socket string   Unix control and monitoring socket (default "/var/run/cunicu.sock")
+```
+
+### Options inherited from parent commands
+
+```
+  -C, --color string       Enable colorization of output (one of: auto, always, never) (default "auto")
+  -l, --log-file string    path of a file to write logs to
+  -d, --log-level string   log level (one of: debug, info, warn, error, dpanic, panic, and fatal) (default "info")
+  -v, --verbose int        verbosity level
+```
+
+### SEE ALSO
+
+* [cunicu](cunicu.md)	 - cunīcu is a user-space daemon managing WireGuard® interfaces to establish peer-to-peer connections in harsh network environments.
+

pkg/rpc/server_daemon.go

@@ -227,3 +227,11 @@ func (s *DaemonServer) GetConfig(ctx context.Context, p *rpcproto.GetConfigParam
 		Settings: settings,
 	}, nil
 }
+
+func (s *DaemonServer) ReloadConfig(ctx context.Context, params *proto.Empty) (*proto.Empty, error) {
+	if err := s.Config.Reload(); err != nil {
+		return nil, status.Errorf(codes.InvalidArgument, "failed to reload configuration: %s", err)
+	}
+
+	return &proto.Empty{}, nil
+}

proto/rpc/daemon.proto

@@ -38,4 +38,5 @@ service Daemon {
     rpc GetStatus(StatusParams) returns (StatusResp) {}
     rpc SetConfig(SetConfigParams) returns (Empty) {}
     rpc GetConfig(GetConfigParams) returns (GetConfigResp) {}
+    rpc ReloadConfig(Empty) returns (Empty) {}
 }