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Show the elements of authentication triplets as byte strings (as that's 

what they are - well, bit strings, really, but...).  Doing so also fixes
a bug, as "decode_gtp_auth_tri()" was copying 16 bytes to an array that
was 8 bytes long....

Do the same for byte-string elements of a quintuplet - and show as byte
strings some elements that weren't being shown at all.

svn path=/trunk/; revision=6511
This commit is contained in:
Guy Harris 2002-10-26 06:13:33 +00:00
parent daa0dd9f1a
commit 54117349d4
1 changed files with 16 additions and 34 deletions
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50
packet-gtp.c
View File

@ -4,7 +4,7 @@
* Copyright 2001, Michal Melerowicz <michal.melerowicz@nokia.com>
* Nicolas Balkota <balkota@mac.com>
*
* $Id: packet-gtp.c,v 1.38 2002/08/30 10:14:03 guy Exp $
* $Id: packet-gtp.c,v 1.39 2002/10/26 06:13:33 guy Exp $
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@ethereal.com>
@ -2640,18 +2640,13 @@ decode_gtp_auth_tri(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tre
proto_tree *ext_tree_auth_tri;
proto_item *te;
guint32 rand[4], sres, kc[2];
tvb_memcpy(tvb, (guint8 *)&rand, offset+1, 16);
sres = tvb_get_ntohl(tvb, offset+17);
tvb_memcpy(tvb, (guint8 *)&kc, offset+21, 16);
te = proto_tree_add_text(tree, tvb, offset, 29, val_to_str(GTP_EXT_AUTH_TRI, gtp_val, "Unknown message"));
ext_tree_auth_tri = proto_item_add_subtree(tree, ett_gtp_auth_tri);
proto_tree_add_text(ext_tree_auth_tri, tvb, offset+1, 16, "RAND: %x%x%x%x", rand[0], rand[1], rand[2], rand[3]);
proto_tree_add_text(ext_tree_auth_tri, tvb, offset+17, 4, "SRES: %x", sres);
proto_tree_add_text(ext_tree_auth_tri, tvb, offset+21, 8, "Kc: %x%x", kc[0], kc[1]);
proto_tree_add_text(ext_tree_auth_tri, tvb, offset+1, 16, "RAND: %s", tvb_bytes_to_str(tvb, offset+1, 16));
proto_tree_add_text(ext_tree_auth_tri, tvb, offset+17, 4, "SRES: %s", tvb_bytes_to_str(tvb, offset+17, 4));
proto_tree_add_text(ext_tree_auth_tri, tvb, offset+21, 8, "Kc: %s", tvb_bytes_to_str(tvb, offset+21, 8));
return 1+16+4+8;
}
@ -3144,21 +3139,15 @@ decode_triplet(tvbuff_t *tvb, int offset, proto_tree *tree, guint16 count) {
proto_tree *ext_tree_trip;
proto_item *te_trip;
guint32 rand[4], sres, kc[2];
guint16 i;
for (i=0;i<count;i++) {
tvb_memcpy(tvb, (guint8 *)&rand, offset+i*28, 16);
sres = tvb_get_ntohl(tvb, offset+i*28+16);
tvb_memcpy(tvb, (guint8 *)&kc, offset+i*28+20, 8);
te_trip = proto_tree_add_text(tree, tvb, offset+i*28, 28, "Triplet no%x", i);
ext_tree_trip = proto_item_add_subtree(te_trip, ett_gtp_trip);
proto_tree_add_text(ext_tree_trip, tvb, offset+i*28, 16, "RAND: %x%x%x%x", rand[0], rand[1], rand[2], rand[3]);
proto_tree_add_text(ext_tree_trip, tvb, offset+i*28+16, 4, "SRES: %x", sres);
proto_tree_add_text(ext_tree_trip, tvb, offset+i*28+20, 8, "Kc: %x%x", kc[0], kc[1]);
proto_tree_add_text(ext_tree_trip, tvb, offset+i*28, 16, "RAND: %s", tvb_bytes_to_str(tvb, offset+i*28, 16));
proto_tree_add_text(ext_tree_trip, tvb, offset+i*28+16, 4, "SRES: %s", tvb_bytes_to_str(tvb, offset+i*28+16, 4));
proto_tree_add_text(ext_tree_trip, tvb, offset+i*28+20, 8, "Kc: %s", tvb_bytes_to_str(tvb, offset+i*28+20, 8));
}
return count*28;
@ -3171,7 +3160,6 @@ decode_quintuplet(tvbuff_t *tvb, int offset, proto_tree *tree, guint16 count, gu
proto_tree *ext_tree_quint;
proto_item *te_quint;
guint32 rand[4], q_ck[4], q_ik[4];
guint16 q_len, xres_len, auth_len, q_offset, i;
q_offset = 0;
@ -3182,25 +3170,19 @@ decode_quintuplet(tvbuff_t *tvb, int offset, proto_tree *tree, guint16 count, gu
q_len = tvb_get_ntohs(tvb, offset);
tvb_memcpy(tvb, (guint8 *)&rand, offset+2, 16);
xres_len = tvb_get_ntohs(tvb, offset+18);
/* xres = tvb_get_ptr(tvb, offset+20, xres_len);*/
tvb_memcpy(tvb, (guint8 *)&q_ck, offset+20+xres_len, 16);
tvb_memcpy(tvb, (guint8 *)&q_ik, offset+36+xres_len, 16);
auth_len = tvb_get_ntohs(tvb, offset+52+xres_len);
/* auth = tvb_get_ptr(tvb, offset+54+xres_len, auth_len);*/
te_quint = proto_tree_add_text(tree, tvb, offset-adjust, q_len+adjust, "Quintuplet #%x", i);
ext_tree_quint = proto_item_add_subtree(te_quint, ett_gtp_quint);
proto_tree_add_text(ext_tree_quint, tvb, offset, 2, "Length: %x", q_len);
proto_tree_add_text(ext_tree_quint, tvb, offset+2, 16, "RAND: %x%x%x%x", rand[0], rand[1], rand[2], rand[3]);
proto_tree_add_text(ext_tree_quint, tvb, offset+18, 2, "XRES length: %x", xres_len);
proto_tree_add_text(ext_tree_quint, tvb, offset+20, xres_len, "XRES");
proto_tree_add_text(ext_tree_quint, tvb, offset+20+xres_len, 16, "Quintuplet ciphering key: %x%x%x%x", q_ck[0], q_ck[1], q_ck[2], q_ck[3]);
proto_tree_add_text(ext_tree_quint, tvb, offset+36+xres_len, 16, "Quintuplet integrity key: %x%x%x%x", q_ik[0], q_ik[1], q_ik[2], q_ik[3]);
proto_tree_add_text(ext_tree_quint, tvb, offset+52+xres_len, 2, "Authentication length: %x", auth_len);
proto_tree_add_text(ext_tree_quint, tvb, offset+54+xres_len, auth_len, "AUTH");
proto_tree_add_text(ext_tree_quint, tvb, offset+2, 16, "RAND: %s", tvb_bytes_to_str(tvb, offset+2, 16));
xres_len = tvb_get_ntohs(tvb, offset+18);
proto_tree_add_text(ext_tree_quint, tvb, offset+18, 2, "XRES length: %u", xres_len);
proto_tree_add_text(ext_tree_quint, tvb, offset+20, xres_len, "XRES: %s", tvb_bytes_to_str(tvb, offset+20, xres_len));
proto_tree_add_text(ext_tree_quint, tvb, offset+20+xres_len, 16, "Quintuplet ciphering key: %s", tvb_bytes_to_str(tvb, offset+20+xres_len, 16));
proto_tree_add_text(ext_tree_quint, tvb, offset+36+xres_len, 16, "Quintuplet integrity key: %s", tvb_bytes_to_str(tvb, offset+36+xres_len, 16));
auth_len = tvb_get_ntohs(tvb, offset+52+xres_len);
proto_tree_add_text(ext_tree_quint, tvb, offset+52+xres_len, 2, "Authentication length: %u", auth_len);
proto_tree_add_text(ext_tree_quint, tvb, offset+54+xres_len, auth_len, "AUTH: %s", tvb_bytes_to_str(tvb, offset+54+xres_len, auth_len));
q_offset = q_offset + q_len + 2;
}