Changeset 29755 in vbox

Timestamp:

May 24, 2010 6:29:45 AM (15 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

61947

Message:

NAT: don't let register more than 4 nameservers. (vbox.org/4098)

File:

• trunk/src/VBox/Devices/Network/slirp/slirp.c (modified) (2 diffs)

trunk/src/VBox/Devices/Network/slirp/slirp.c

@@ -421 +421 @@
     RTFILE f;
     int fFoundNameserver = 0;
+    int fWarnTooManyDnsServers = 0;
     struct in_addr tmp_addr;
     int rc;
@@ -472 +473 @@
     {
         struct dns_entry *pDns = NULL;
-        if (sscanf(buff, "nameserver%*[ \t]%256s", buff2) == 1)
+        if (   fFoundNameserver == 4 
+            && fWarnTooManyDnsServers == 0
+            && sscanf(buff, "nameserver%*[ \t]%256s", buff2) == 1)
+        {
+            fWarnTooManyDnsServers = 1;
+            LogRel(("NAT: too many nameservers registered.\n"));
+        }
+        if (   sscanf(buff, "nameserver%*[ \t]%256s", buff2) == 1 
+            && fFoundNameserver < 4) /* Unix doesn't accept more than 4 name servers*/
         {
             if (!inet_aton(buff2, &tmp_addr))