X-Git-Url: https://ruderich.org/simon/gitweb/?a=blobdiff_plain;f=cmd%2Fsafcm-remote%2Fmain.go;h=a29f20c171747ac6f3a72935c33a1ca6e162dd8a;hb=b2d5dd94dfb0cf2154f7c2da4b2e0bd292fed77e;hp=bf5159f0c89e9fa3d7c1dd904ff9a8476a4ba4ef;hpb=2a08d176811fe8adf95234dc3c0d9a7eb7539e8a;p=safcm%2Fsafcm.git

diff --git a/cmd/safcm-remote/main.go b/cmd/safcm-remote/main.go
index bf5159f..a29f20c 100644
--- a/cmd/safcm-remote/main.go
+++ b/cmd/safcm-remote/main.go
@@ -1,4 +1,4 @@
-// Helper copied to the remote hosts to run commands and deploy configuration
+// Helper copied to the remote host to run commands and deploy configuration
 
 // Copyright (C) 2021  Simon Ruderich
 //
@@ -22,6 +22,8 @@ import (
 	"log"
 	"os"
 
+	"golang.org/x/term"
+
 	"ruderich.org/simon/safcm"
 	"ruderich.org/simon/safcm/cmd/safcm-remote/ainsl"
 	"ruderich.org/simon/safcm/cmd/safcm-remote/info"
@@ -62,14 +64,20 @@ func main() {
 }
 
 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, format string, a ...interface{}) {
+	logFunc := func(level safcm.LogLevel, msg string) {
 		if logLevel >= level {
 			conn.Send(safcm.MsgLog{
 				Level: level,
-				Text:  fmt.Sprintf(format, a...),
+				Text:  msg,
 			})
 		}
 	}