[tor-commits] [meek/extension] Add processterminate-buffer program.

[dcf@xxxxxxxxxxxxxx]

commit 82a68236b1a150961d777ef9073044c88a9f9aa4
Author: David Fifield <david@xxxxxxxxxxxxxxx>
Date:   Mon Apr 7 23:24:17 2014 -0700

    Add processterminate-buffer program.
    
    This program insulates a transport plugin from tor on Windows, so that
    the transport plugin can clean up after itself.
---
 .gitignore                      |    1 +
 processterminate-buffer/main.go |   33 +++++++++++++++++++++++++++++++++
 2 files changed, 34 insertions(+)

diff --git a/.gitignore b/.gitignore
index 3d5729c..d442bd2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 /meek-client/meek-client
 /meek-client-torbrowser/meek-client-torbrowser
 /meek-server/meek-server
+/processterminate-buffer/processterminate-buffer
diff --git a/processterminate-buffer/main.go b/processterminate-buffer/main.go
new file mode 100644
index 0000000..cb68ee4
--- /dev/null
+++ b/processterminate-buffer/main.go
@@ -0,0 +1,33 @@
+// This program is designed to sit between tor and a transport plugin on
+// Windows. On Windows, transport plugins are killed with a ProcessTerminate,
+// which doesn't give them a chance to clean up before exiting.
+// https://trac.torproject.org/projects/tor/ticket/9330
+// The idea of this program is that the transport plugin can read from its
+// standard input, which will be closed when this program is terminated. The
+// transport plugin can then treat the stdin-closed event like a SIGTERM.
+package main
+
+import (
+	"log"
+	"os"
+	"os/exec"
+)
+
+func main() {
+	args := os.Args[1:]
+	if len(args) < 1 {
+		log.Fatalf("%s needs a command to run", os.Args[0])
+	}
+	cmd := exec.Command(args[0], args[1:]...)
+	cmd.Stdin = os.Stdin
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	err := cmd.Start()
+	if err != nil {
+		log.Fatal(err)
+	}
+	err = cmd.Wait()
+	if err != nil {
+		log.Fatal(err)
+	}
+}



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