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Filter all 0.0.0.0 addresses from being sent to the other end of the wire

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when using Xdmcp. Suggested on devel@xfree86.org and discussed by many
    people in that and other forums.
This commit is contained in:
Harold L Hunt II 2004-01-29 00:56:24 +00:00
parent 26bfd17c4b
commit 829a8956a7
1 changed files with 44 additions and 8 deletions
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52
os/access.c
View file

@ -438,14 +438,24 @@ DefineSelf (int fd)
continue;
/*
* ignore 'localhost' entries as they're not useful
* on the other end of the wire
* Ignore 'localhost' entries as they're not useful
* on the other end of the wire.
*/
if (len == 4 &&
addr[0] == 127 && addr[1] == 0 &&
addr[2] == 0 && addr[3] == 1)
continue;
/*
* Ignore '0.0.0.0' entries as they are
* returned by some OSes for unconfigured NICs but they are
* not useful on the other end of the wire.
*/
if (len == 4 &&
addr[0] == 0 && addr[1] == 0 &&
addr[2] == 0 && addr[3] == 0)
continue;
XdmcpRegisterConnection (family, (char *)addr, len);
@ -570,11 +580,15 @@ DefineSelf (int fd)
#ifdef XDMCP
/*
* If this is an Internet Address, but not the localhost
* address (127.0.0.1), register it.
* address (127.0.0.1), nor the bogus address (0.0.0.0),
* register it.
*/
if (family == FamilyInternet &&
!(len == 4 && addr[0] == 127 && addr[1] == 0 &&
addr[2] == 0 && addr[3] == 1)
!(len == 4 &&
((addr[0] == 127 && addr[1] == 0 &&
addr[2] == 0 && addr[3] == 1) ||
(addr[0] == 0 && addr[1] == 0 &&
addr[2] == 0 && addr[3] == 0))
)
{
XdmcpRegisterConnection (family, (char *)addr, len);
@ -821,6 +835,16 @@ DefineSelf (int fd)
continue;
#endif
/*
* Ignore '0.0.0.0' entries as they are
* returned by some OSes for unconfigured NICs but they are
* not useful on the other end of the wire.
*/
if (len == 4 &&
addr[0] == 0 && addr[1] == 0 &&
addr[2] == 0 && addr[3] == 0)
continue;
XdmcpRegisterConnection (family, (char *)addr, len);
#if defined(IPv6) && defined(AF_INET6)
@ -925,14 +949,26 @@ DefineSelf (int fd)
*/
if (family != FamilyInternet)
continue;
/*
* ignore 'localhost' entries as they're not usefule
* on the other end of the wire
* Ignore 'localhost' entries as they're not usefule
* on the other end of the wire.
*/
if (len == 4 &&
addr[0] == 127 && addr[1] == 0 &&
addr[2] == 0 && addr[2] == 1)
addr[2] == 0 && addr[3] == 1)
continue;
/*
* Ignore '0.0.0.0' entries as they are
* returned by some OSes for unconfigured NICs but they are
* not useful on the other end of the wire.
*/
if (len == 4 &&
addr[0] == 0 && addr[1] == 0 &&
addr[2] == 0 && addr[3] == 0)
continue;
XdmcpRegisterConnection(family, (char *)addr, len);
if ((ifr->ifa_flags & IFF_BROADCAST) &&
(ifr->ifa_flags & IFF_UP))