QNX6: avoid deferencing a null pointer
Bug: 10920 Change-Id: Ibf3539c188431d2514c523c094d1e2d86b77f0b5 Reviewed-on: https://code.wireshark.org/review/6967 Reviewed-by: Evan Huus <eapache@gmail.com> Petri-Dish: Pascal Quantin <pascal.quantin@gmail.com> Reviewed-by: Pascal Quantin <pascal.quantin@gmail.com>
This commit is contained in:
parent
3f480c6cd3
commit
1fdc6f409f
|
@ -1596,8 +1596,7 @@ dissect_qnet6_lr(tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree, gint *
|
|||
|
||||
if ((off <= rlen) && (len <= rlen))
|
||||
{/* bad value of source * name */
|
||||
/* FIXME remove tvb_get_ptr */
|
||||
name[i] = tvb_get_ptr(tvb, lr_start + off + QNX_QNET6_LR_PKT_SIZE /* sizeof(struct qnet6_lr_pkt) */, len);
|
||||
name[i] = tvb_get_string_enc(wmem_packet_scope(), tvb, lr_start + off + QNX_QNET6_LR_PKT_SIZE /* sizeof(struct qnet6_lr_pkt) */, len, ENC_ASCII|ENC_NA);
|
||||
/*
|
||||
* struct qnet6_lr_pkt is 64 bit aligned
|
||||
*/
|
||||
|
@ -1609,7 +1608,7 @@ dissect_qnet6_lr(tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree, gint *
|
|||
else
|
||||
{
|
||||
p = name[i];
|
||||
if(*(p + 1) == QNET_LR_SA_FAMILY_MAC)
|
||||
if(strlen(p) && (*(p + 1) == QNET_LR_SA_FAMILY_MAC))
|
||||
{
|
||||
ti = proto_tree_add_string(sstree, hf_index, tvb, lr_start + off + QNX_QNET6_LR_PKT_SIZE, len, p+2);
|
||||
PROTO_ITEM_SET_GENERATED(ti);
|
||||
|
@ -1626,22 +1625,24 @@ dissect_qnet6_lr(tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree, gint *
|
|||
{
|
||||
case QNET_LR_TYPE_REQUEST:
|
||||
p = name[2];
|
||||
if (*(p + 1) == QNET_LR_SA_FAMILY_MAC)
|
||||
if (p && (*(p + 1) == QNET_LR_SA_FAMILY_MAC))
|
||||
{
|
||||
col_add_fstr(pinfo->cinfo, COL_INFO,
|
||||
"Who is \"%s.%s\"? Tell \"%s.%s\"@%02x:%02x:%02x:%02x:%02x:%02x",
|
||||
name[3], name[4], name[0], name[1],
|
||||
name[3] ? (char*)name[3] : "?", name[4] ? (char*)name[4] : "?",
|
||||
name[0] ? (char*)name[0] : "?", name[1] ? (char*)name[1] : "?",
|
||||
*(p + 2), *(p + 3), *(p + 4),
|
||||
*(p + 5), *(p + 6), *(p + 7));
|
||||
}
|
||||
break;
|
||||
case QNET_LR_TYPE_REPLY:
|
||||
p = name[2];
|
||||
if (*(p + 1) == QNET_LR_SA_FAMILY_MAC)
|
||||
if (p && (*(p + 1) == QNET_LR_SA_FAMILY_MAC))
|
||||
{
|
||||
col_add_fstr(pinfo->cinfo, COL_INFO,
|
||||
"To \"%s.%s\", \"%s.%s\" is at %02x:%02x:%02x:%02x:%02x:%02x",
|
||||
name[3], name[4], name[0], name[1],
|
||||
name[3] ? (char*)name[3] : "?", name[4] ? (char*)name[4] : "?",
|
||||
name[0] ? (char*)name[0] : "?", name[1] ? (char*)name[1] : "?",
|
||||
*(p + 2), *(p + 3), *(p + 4),
|
||||
*(p + 5), *(p + 6), *(p + 7));
|
||||
}
|
||||
|
@ -4632,7 +4633,7 @@ proto_register_qnet6(void)
|
|||
NULL, 0, "LR Message destination domain name length", HFILL}
|
||||
},
|
||||
{&hf_qnet6_lr_dst_domain_generated,
|
||||
{"domain",
|
||||
{"Domain",
|
||||
"qnet6.lr.dst.domain", FT_STRING, BASE_NONE,
|
||||
NULL, 0, "LR Message destination domain name", HFILL}
|
||||
},
|
||||
|
|
Loading…
Reference in New Issue