From ea04bfffe93df1f3467a5c33c0dda335ff0a11f6 Mon Sep 17 00:00:00 2001
From: Daniel Kahn Gillmor <dkg@fifthhorseman.net>
Date: Wed, 9 Apr 2008 12:46:33 -0400
Subject: [PATCH] gpg2ssh: check the return status of the base64 pipe so we can
 fail properly if it does.

---
 gpg2ssh.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/gpg2ssh.c b/gpg2ssh.c
index f696f65..6155549 100644
--- a/gpg2ssh.c
+++ b/gpg2ssh.c
@@ -48,6 +48,7 @@ int main(int argc, char* argv[]) {
   char* const args[] = {"/usr/bin/base64", "--wrap=0", NULL};
   const char* algoname;
   int mpicount;
+  int pipestatus;
 
   init_gnutls();
   
@@ -258,23 +259,27 @@ int main(int argc, char* argv[]) {
 
   snprintf(output_data, sizeof(output_data), "%s %s ", userid, algoname);
 
-  write(1, output_data, strlen(output_data));
-
   pipefd = create_writing_pipe(&child_pid, args[0], args);
   if (pipefd < 0) {
     err("failed to create a writing pipe (returned %d)\n", pipefd);
     return pipefd;
   }
     
+  write(1, output_data, strlen(output_data));
+
   if (0 != write_data_fd_with_length(pipefd, all, mpicount)) {
     err("was not able to write out RSA key data\n");
     return 1;
   }
   close(pipefd);
-  if (child_pid != waitpid(child_pid, NULL, 0)) {
+  if (child_pid != waitpid(child_pid, &pipestatus, 0)) {
     err("could not wait for child process to return for some reason.\n");
     return 1;
   }
+  if (pipestatus != 0) {
+    err("base64 pipe died with return code %d\n", pipestatus);
+    return pipestatus;
+  }
 
   write(1, "\n", 1);
 
-- 
2.25.1