[tor-commits] [meek/master] Emit a CMETHOD-ERROR or SMETHOD-ERROR when failing to open log file.

[dcf@xxxxxxxxxxxxxx]

commit 017d0f33d7270ff102fe167f1c16def8b3e3be4a
Author: David Fifield <david@xxxxxxxxxxxxxxx>
Date:   Fri Mar 31 00:46:46 2017 -0700

    Emit a CMETHOD-ERROR or SMETHOD-ERROR when failing to open log file.
    
    This causes a message to appear in tor's log. Otherwise, with no log
    file to write to, there's no indication of what the error was that
    caused the transport plugin to fail.
    
    https://bugs.torproject.org/20451
---
 meek-client/meek-client.go | 13 ++++++++-----
 meek-server/meek-server.go | 15 +++++++++------
 2 files changed, 17 insertions(+), 11 deletions(-)

diff --git a/meek-client/meek-client.go b/meek-client/meek-client.go
index 9706c66..8cbc84a 100644
--- a/meek-client/meek-client.go
+++ b/meek-client/meek-client.go
@@ -363,10 +363,18 @@ func main() {
 	flag.StringVar(&options.URL, "url", "", "URL to request if no url= SOCKS arg")
 	flag.Parse()
 
+	ptInfo, err = pt.ClientSetup(nil)
+	if err != nil {
+		log.Fatalf("error in ClientSetup: %s", err)
+	}
+
 	log.SetFlags(log.LstdFlags | log.LUTC)
 	if logFilename != "" {
 		f, err := os.OpenFile(logFilename, os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0600)
 		if err != nil {
+			// If we fail to open the log, emit a message that will
+			// appear in tor's log.
+			pt.CmethodError(ptMethodName, fmt.Sprintf("error opening log file: %s", err))
 			log.Fatalf("error opening log file: %s", err)
 		}
 		defer f.Close()
@@ -395,11 +403,6 @@ func main() {
 	httpTransport = *http.DefaultTransport.(*http.Transport)
 	httpTransport.Proxy = nil
 
-	ptInfo, err = pt.ClientSetup(nil)
-	if err != nil {
-		log.Fatalf("error in ClientSetup: %s", err)
-	}
-
 	// Command-line proxy overrides managed configuration.
 	if options.ProxyURL == nil {
 		options.ProxyURL = ptInfo.ProxyURL
diff --git a/meek-server/meek-server.go b/meek-server/meek-server.go
index ee53d83..d0be266 100644
--- a/meek-server/meek-server.go
+++ b/meek-server/meek-server.go
@@ -359,22 +359,25 @@ func main() {
 	flag.IntVar(&port, "port", 0, "port to listen on")
 	flag.Parse()
 
+	var err error
+	ptInfo, err = pt.ServerSetup(nil)
+	if err != nil {
+		log.Fatalf("error in ServerSetup: %s", err)
+	}
+
 	log.SetFlags(log.LstdFlags | log.LUTC)
 	if logFilename != "" {
 		f, err := os.OpenFile(logFilename, os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0600)
 		if err != nil {
+			// If we fail to open the log, emit a message that will
+			// appear in tor's log.
+			pt.SmethodError(ptMethodName, fmt.Sprintf("error opening log file: %s", err))
 			log.Fatalf("error opening log file: %s", err)
 		}
 		defer f.Close()
 		log.SetOutput(f)
 	}
 
-	var err error
-	ptInfo, err = pt.ServerSetup(nil)
-	if err != nil {
-		log.Fatalf("error in ServerSetup: %s", err)
-	}
-
 	// Handle the various ways of setting up TLS. The legal configurations
 	// are:
 	//   --acme-hostnames (with optional --acme-email)

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