From 22c3b60b40edbe58c8b5f5237dd6b995032cca03 Mon Sep 17 00:00:00 2001
From: Philip Hazel <ph10@hermes.cam.ac.uk>
Date: Tue, 10 May 2005 11:13:09 +0000
Subject: [PATCH] 1. Preserve underlying transport filter timeout message if a
 pipe command ends in failure.

---
 doc/doc-txt/ChangeLog     |  7 ++++++-
 src/src/transports/pipe.c | 24 +++++++++++++++++-------
 2 files changed, 23 insertions(+), 8 deletions(-)

diff --git a/doc/doc-txt/ChangeLog b/doc/doc-txt/ChangeLog
index 18113c2f1..e26eac4bb 100644
--- a/doc/doc-txt/ChangeLog
+++ b/doc/doc-txt/ChangeLog
@@ -1,4 +1,4 @@
-$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.134 2005/05/10 10:19:11 ph10 Exp $
+$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.135 2005/05/10 11:13:09 ph10 Exp $
 
 Change log file for Exim from version 4.21
 -------------------------------------------
@@ -9,6 +9,11 @@ Exim version 4.52
 
 TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
 
+PH/01 When a transport filter timed out in a pipe delivery, and the pipe
+      command itself ended in error, the underlying message about the transport
+      filter timeout was being overwritten with the pipe command error. Now the
+      underlying error message should be appended to the second error message.
+
 
 Exim version 4.51
 -----------------
diff --git a/src/src/transports/pipe.c b/src/src/transports/pipe.c
index 43d0e5895..6fbadfb46 100644
--- a/src/src/transports/pipe.c
+++ b/src/src/transports/pipe.c
@@ -1,4 +1,4 @@
-/* $Cambridge: exim/src/src/transports/pipe.c,v 1.5 2005/05/03 14:20:01 ph10 Exp $ */
+/* $Cambridge: exim/src/src/transports/pipe.c,v 1.6 2005/05/10 11:13:09 ph10 Exp $ */
 
 /*************************************************
 *     Exim - an Internet mail transport agent    *
@@ -830,6 +830,9 @@ above timed out. */
 
 if ((rc = child_close(pid, timeout)) != 0)
   {
+  uschar *tmsg = (addr->message == NULL)? US"" :
+    string_sprintf(" (preceded by %s)", addr->message);
+
   /* The process did not complete in time; kill its process group and fail
   the delivery. It appears to be necessary to kill the output process too, as
   otherwise it hangs on for some time if the actual pipe process is sleeping.
@@ -841,7 +844,7 @@ if ((rc = child_close(pid, timeout)) != 0)
     killpg(pid, SIGKILL);
     kill(outpid, SIGKILL);
     addr->transport_return = ob->timeout_defer? DEFER : FAIL;
-    addr->message = string_sprintf("pipe delivery process timed out");
+    addr->message = string_sprintf("pipe delivery process timed out%s", tmsg);
     }
 
   /* Wait() failed. */
@@ -850,7 +853,7 @@ if ((rc = child_close(pid, timeout)) != 0)
     {
     addr->transport_return = PANIC;
     addr->message = string_sprintf("Wait() failed for child process of %s "
-      "transport: %s", tblock->name, strerror(errno));
+      "transport: %s%s", tblock->name, strerror(errno), tmsg);
     }
 
   /* Either the process completed, but yielded a non-zero (necessarily
@@ -864,8 +867,8 @@ if ((rc = child_close(pid, timeout)) != 0)
       {
       addr->transport_return = FAIL;
       addr->message = string_sprintf("Child process of %s transport (running "
-        "command \"%s\") was terminated by signal %d (%s)", tblock->name, cmd,
-        -rc, os_strsignal(-rc));
+        "command \"%s\") was terminated by signal %d (%s)%s", tblock->name, cmd,
+        -rc, os_strsignal(-rc), tmsg);
       }
     }
 
@@ -917,8 +920,8 @@ if ((rc = child_close(pid, timeout)) != 0)
       {
       addr->transport_return = DEFER;
       addr->special_action = SPECIAL_FREEZE;
-      addr->message = string_sprintf("pipe process failed to exec \"%s\"",
-        cmd);
+      addr->message = string_sprintf("pipe process failed to exec \"%s\"%s",
+        cmd, tmsg);
       }
 
     /* Otherwise take action only if not ignoring status */
@@ -992,6 +995,13 @@ if ((rc = child_close(pid, timeout)) != 0)
         if (quote)
           addr->message = string_cat(addr->message, &size, &ptr, US"\"", 1);
         }
+
+      /* Add previous filter timeout message, if present. */
+
+      if (*tmsg != 0)
+        addr->message = string_cat(addr->message, &size, &ptr, tmsg,
+          Ustrlen(tmsg));
+
       addr->message[ptr] = 0;  /* Ensure concatenated string terminated */
       }
     }
-- 
2.30.2