Added support for Lucent/Ascend packet traces. The MAX and Pipeline router

family has a set of debug commands that allow you to log the traffic on a
WAN or dialup connection as text, e.g.

RECV-iguana:241:(task: B04E12C0, time: 1975358.50) 15 octets @ 8003D634
  [0000]: FF 03 00 3D C0 06 C9 96 2D 04 C1 72 00 05 B8

Created wtap_seek_read() which parses the textual data for and Ascend
trace, and does a normal fseek() and fread() for any other file type.
The fseek()/fread() pairs in file.c were replaced with the new function.

svn path=/trunk/; revision=652

1 files changed, 4 insertions, 7 deletions

diff --git a/file.c b/file.c
index 3ce06f9776..285388aa28 100644
--- a/file.c
+++ b/file.c
@@ -1,7 +1,7 @@
 /* file.c
  * File I/O routines
  *
- * $Id: file.c,v 1.87 1999/09/09 02:42:24 gram Exp $
+ * $Id: file.c,v 1.88 1999/09/11 04:50:34 gerald Exp $
  *
  * Ethereal - Network traffic analyzer
  * By Gerald Combs <gerald@zing.org>
@@ -708,8 +708,7 @@ filter_packets(capture_file *cf)
 
     cf->count++;
 
-    fseek(cf->fh, fd->file_off, SEEK_SET);
-    fread(cf->pd, sizeof(guint8), fd->cap_len, cf->fh);
+    wtap_seek_read (cf-> cd_t, cf->fh, fd->file_off, cf->pd, fd->cap_len);
 
     add_packet_to_packet_list(fd, cf, cf->pd);
   }
@@ -754,8 +753,7 @@ print_packets(capture_file *cf, int to_file, const char *dest)
   for (fd = cf->plist; fd != NULL; fd = fd->next) {
     cf->count++;
 
-    fseek(cf->fh, fd->file_off, SEEK_SET);
-    fread(cf->pd, sizeof(guint8), fd->cap_len, cf->fh);
+    wtap_seek_read (cf-> cd_t, cf->fh, fd->file_off, cf->pd, fd->cap_len);
 
     /* create the logical protocol tree */
     protocol_tree = proto_tree_create_root();
@@ -896,8 +894,7 @@ select_packet(capture_file *cf, int row)
   cf->selected_packet = i;
 
   /* Get the data in that frame. */
-  fseek(cf->fh, cf->fd->file_off, SEEK_SET);
-  fread(cf->pd, sizeof(guint8), cf->fd->cap_len, cf->fh);
+  wtap_seek_read (cf-> cd_t, cf->fh, fd->file_off, cf->pd, fd->cap_len);
 
   /* Create the logical protocol tree. */
   if (cf->protocol_tree)