Description: Fix time_t expansion on big-endian archs where sizeof(time_t) > 4
Author: Christoph Biedl <debian.axhn@manchmal.in-ulm.de>
Bug: https://bitbucket.org/ripencc/bgpdump/issues/38/
Bug-Debian: https://bugs.debian.org/832468
Last-Update: 2016-08-04

    On these archs the present code places the time_t data in the wrong
    32 bits of time_t. Additionally, broken libc implementations do not
    mask the result of ntohl to the size of 32 bit, resulting in a huge
    time_t value that gmtime cannot handle, which eventually leads to a
    segfault.

--- a/bgpdump_lib.c
+++ b/bgpdump_lib.c
@@ -138,10 +138,11 @@
     u_char *buffer;
     int ok=0;
     u_int32_t bytes_read;
+    u_int32_t t;
 
     this_entry = malloc_check(sizeof(BGPDUMP_ENTRY));
 
-    bytes_read = cfr_read_n(dump->f, &(this_entry->time), 4);
+    bytes_read = cfr_read_n(dump->f, &t, 4);
     bytes_read += cfr_read_n(dump->f, &(this_entry->type), 2);
     bytes_read += cfr_read_n(dump->f, &(this_entry->subtype), 2);
     bytes_read += cfr_read_n(dump->f, &(this_entry->length), 4);
@@ -150,7 +151,7 @@
         /* Intel byte ordering stuff ... */
         this_entry->type = ntohs(this_entry->type);
         this_entry->subtype = ntohs(this_entry->subtype);
-        this_entry->time = ntohl(this_entry->time);
+        this_entry->time = (time_t) ntohl (t);
         this_entry->length = ntohl(this_entry->length);
         
         /* If Extended Header format, then reading the miscroseconds attribute */