gentoo-overlay/net-mail/mpack/files/mpack-1.6-munpack.patch

From a4ececa89969adfa53c30878b21178e1427cb6c5 Mon Sep 17 00:00:00 2001
From: Sebastian Pipping <sebastian@pipping.org>
Date: Wed, 18 Jan 2012 05:22:25 +0100
Subject: [PATCH] Fix unpacking of multiple parts

The problem was reported by Dirk Meyer of FreeBSD.

He shared these commands to reproduce:
$ ./mpack -s Subject -m 1700 -o zparts md5c.c
$ ./munpack zparts.*
---
 decode.c |    2 +-
 unixos.c |   13 +++++++++++++
 2 files changed, 14 insertions(+), 1 deletions(-)

diff --git a/decode.c b/decode.c
index 7349abd..e8e8d56 100644
--- a/decode.c
+++ b/decode.c
@@ -633,7 +633,7 @@ int handlePartial(struct part *inpart, char *headers, params contentParams, int
 	}
 	/* Store number of parts in reassembly directory */
 	sprintf(buf, "%sCT", dir);
-	partfile = os_createnewfile(buf);
+	partfile = os_resetfile(buf);
 	if (!partfile) {
 	    os_perror(buf);
 	    goto ignore;
diff --git a/unixos.c b/unixos.c
index 0e2f469..1650594 100644
--- a/unixos.c
+++ b/unixos.c
@@ -146,6 +146,19 @@ FILE *os_createnewfile(char *fname)
     return ret;
 }
 
+FILE *os_resetfile(char *fname)
+{
+    int fd;
+    FILE *ret;
+
+    fd=open(fname, O_RDWR|O_CREAT|O_TRUNC, 0600);
+    if (fd == -1)
+        return NULL;
+
+    ret=fdopen(fd, "w");
+    return ret;
+}
+
      
 /*
  * Create a new file, with suggested filename "fname".
-- 
1.7.8.3