X-Git-Url: https://ruderich.org/simon/gitweb/?a=blobdiff_plain;f=remote%2Fmain.go;fp=remote%2Fmain.go;h=61a6237ae9b94abd3b6c1ce90d8f124bacbb047a;hb=9269fa3c94e700afc0be823f58ea473a2db8f3dc;hp=0000000000000000000000000000000000000000;hpb=fd97e8019e2ab166d9475ed59782c86247d8430b;p=safcm%2Fsafcm.git

diff --git a/remote/main.go b/remote/main.go
new file mode 100644
index 0000000..61a6237
--- /dev/null
+++ b/remote/main.go
@@ -0,0 +1,114 @@
+// Helper copied to the remote host to run commands and deploy configuration
+
+// Copyright (C) 2021  Simon Ruderich
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package remote
+
+import (
+	"fmt"
+	"log"
+	"os"
+
+	"golang.org/x/term"
+
+	"ruderich.org/simon/safcm"
+	"ruderich.org/simon/safcm/remote/ainsl"
+	"ruderich.org/simon/safcm/remote/info"
+	"ruderich.org/simon/safcm/remote/run"
+	"ruderich.org/simon/safcm/remote/sync"
+)
+
+func usage() {
+	log.Fatalf("usage: %[1]s sync\n"+
+		"usage: %[1]s ainsl [options] <path> <line>",
+		os.Args[0])
+}
+
+func Main() {
+	// Timestamps are added by `safcm`
+	log.SetFlags(0)
+
+	if len(os.Args) < 2 {
+		usage()
+	}
+
+	var err error
+	switch os.Args[1] {
+	case "sync":
+		if len(os.Args) != 2 {
+			usage()
+		}
+		err = mainLoop()
+	case "ainsl":
+		err = ainsl.Main(os.Args)
+	default:
+		usage()
+	}
+
+	if err != nil {
+		log.Fatalf("%s: %v", os.Args[0], err)
+	}
+}
+
+func mainLoop() error {
+	if term.IsTerminal(int(os.Stdin.Fd())) ||
+		term.IsTerminal(int(os.Stdout.Fd())) {
+		return fmt.Errorf("sync should only be called from `safcm` " +
+			"(redirect stdin/stdout to circumvent this check)")
+	}
+
+	conn := safcm.NewGobConn(os.Stdin, os.Stdout)
+
+	var logLevel safcm.LogLevel
+	logFunc := func(level safcm.LogLevel, msg string) {
+		if logLevel >= level {
+			conn.Send(safcm.MsgLog{
+				Level: level,
+				Text:  msg,
+			})
+		}
+	}
+
+	var quitResp safcm.MsgQuitResp
+	for {
+		x, err := conn.Recv()
+		if err != nil {
+			return err
+		}
+
+		var resp safcm.Msg
+		switch x := x.(type) {
+		case safcm.MsgInfoReq:
+			logLevel = x.LogLevel // set log level globally
+			resp = info.Handle(x, run.ExecRunner{}, logFunc)
+		case safcm.MsgSyncReq:
+			resp = sync.Handle(x, run.ExecRunner{}, logFunc)
+		case safcm.MsgQuitReq:
+			resp = quitResp
+		default:
+			return fmt.Errorf("unsupported message %#v", x)
+		}
+
+		err = conn.Send(resp)
+		if err != nil {
+			return err
+		}
+		if resp == quitResp {
+			break
+		}
+	}
+	return nil
+}