DWS/chrony
1
0
Fork 0
mirror of https://gitlab.com/chrony/chrony.git synced 2025-12-06 12:15:07 -05:00
Code Issues Packages Projects Releases Wiki Activity

ntp+cmdmon: fix responding to link-local addresses

Browse Source 
After commit e49aececce ("socket: don't set interface for sent
packets") the NTP and cmdmon server stopped responding to requests from
link-local addresses.

Set the interface specifically for packets sent to a link-local address.
This commit is contained in:
Miroslav Lichvar
2020-06-30 16:13:48 +02:00
parent 99e3c67a81
commit 4e747da4b4
4 changed files with 28 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
socket.c
View File

@@ -1228,6 +1228,23 @@ SCK_GetLoopbackIPAddress(int family, IPAddr *local_addr)
/* ================================================== */
int
SCK_IsLinkLocalIPAddress(IPAddr *addr)
{
switch (addr->family) {
case IPADDR_INET4:
/* 169.254.0.0/16 */
return (addr->addr.in4 & 0xffff0000) == 0xa9fe0000;
case IPADDR_INET6:
/* fe80::/10 */
return addr->addr.in6[0] == 0xfe && (addr->addr.in6[1] & 0xc0) == 0x80;
default:
return 0;
}
}
/* ================================================== */
void
SCK_SetPrivBind(int (*function)(int sock_fd, struct sockaddr *address,
socklen_t address_len))