mir/isc-dhcp
2
0
Fork 0
mirror of https://gitlab.isc.org/isc-projects/dhcp synced 2025-09-03 15:56:00 +00:00
Code Issues Releases Wiki Activity

DNS Update fix. A misconfigured server could crash during DNS update

Browse Source 
processing if the configuration included overlapping pools or
multiple fixed-address entries for a single address.  This issue
affected both IPv4 and IPv6. The fix allows a server to detect such
conditions, provides the user with extra information and recommended
steps to fix the problem.  If the user enables the appropriate option
in site.h then server will be terminated
This commit is contained in:
Shawn Routhier
2011-07-08 22:49:11 +00:00
parent 355fb647bc
commit beaed73f00
6 changed files with 338 additions and 30 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
common/print.c
View File

@@ -1417,14 +1417,24 @@ print_dns_status (int direction,
}
en = " dhcid: ";
if (s + strlen(en) + ddns_cb->dhcid.len < end) {
strcpy(s, en);
s += strlen(s);
strncpy(s, (char *)ddns_cb->dhcid.data + 1,
ddns_cb->dhcid.len - 1);
s += strlen(s);
if (ddns_cb->dhcid.len > 0) {
if (s + strlen(en) + ddns_cb->dhcid.len-1 < end) {
strcpy(s, en);
s += strlen(s);
strncpy(s, (char *)ddns_cb->dhcid.data+1,
ddns_cb->dhcid.len-1);
s += strlen(s);
} else {
goto bailout;
}
} else {
goto bailout;
en = " dhcid: <empty>";
if (s + strlen(en) < end) {
strcpy(s, en);
s += strlen(s);
} else {
goto bailout;
}
}
en = " ttl: ";