d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Fixed the calculations with UDP header length field.

Browse Source 
The field is in network byte order and contains the
size of the header.

Reviewed by:	brian
This commit is contained in:
Ruslan Ermilov 2000-09-21 06:52:59 +00:00
parent c508c1b632
commit 0122d6f195
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=66157
2 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
lib/libalias/alias_cuseeme.c
View File

@ -70,7 +70,7 @@ AliasHandleCUSeeMeOut(struct ip *pip, struct alias_link *link)
struct udphdr *ud;
ud = (struct udphdr *)((char *)pip + (pip->ip_hl << 2));
if(ud->uh_ulen >= sizeof(struct cu_header)) {
if (ntohs(ud->uh_ulen) - sizeof(struct udphdr) >= sizeof(struct cu_header)) {
struct cu_header *cu;
struct alias_link *cu_link;
@ -104,7 +104,7 @@ AliasHandleCUSeeMeIn(struct ip *pip, struct in_addr original_addr)
cu = (struct cu_header *)(ud + 1);
oc = (struct oc_header *)(cu + 1);
ci = (struct client_info *)(oc + 1);
end = (char *)cu + ud->uh_ulen;
end = (char *)ud + ntohs(ud->uh_ulen);
if ((char *)oc <= end) {
if(cu->dest_addr)

4
sys/netinet/libalias/alias_cuseeme.c
View File

@ -70,7 +70,7 @@ AliasHandleCUSeeMeOut(struct ip *pip, struct alias_link *link)
struct udphdr *ud;
ud = (struct udphdr *)((char *)pip + (pip->ip_hl << 2));
if(ud->uh_ulen >= sizeof(struct cu_header)) {
if (ntohs(ud->uh_ulen) - sizeof(struct udphdr) >= sizeof(struct cu_header)) {
struct cu_header *cu;
struct alias_link *cu_link;
@ -104,7 +104,7 @@ AliasHandleCUSeeMeIn(struct ip *pip, struct in_addr original_addr)
cu = (struct cu_header *)(ud + 1);
oc = (struct oc_header *)(cu + 1);
ci = (struct client_info *)(oc + 1);
end = (char *)cu + ud->uh_ulen;
end = (char *)ud + ntohs(ud->uh_ulen);
if ((char *)oc <= end) {
if(cu->dest_addr)