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- Check client identifier on hw_lease before giving it to the client.

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- Don't try to reference host to lease if there's no host.
This commit is contained in:
Ted Lemon
2001-03-16 01:55:38 +00:00
parent c2318c2074
commit 7f65aa81c2
1 changed files with 27 additions and 8 deletions
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35
server/dhcp.c
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@@ -43,7 +43,7 @@
#ifndef lint
static char copyright[] =
"$Id: dhcp.c,v 1.184 2001/03/15 23:22:08 mellon Exp $ Copyright (c) 1995-2000 The Internet Software Consortium. All rights reserved.\n";
"$Id: dhcp.c,v 1.185 2001/03/16 01:55:38 mellon Exp $ Copyright (c) 1995-2000 The Internet Software Consortium. All rights reserved.\n";
#endif /* not lint */
#include "dhcpd.h"
@@ -2759,10 +2759,11 @@ int find_lease (struct lease **lp,
piaddr (fixed_lease -> ip_addr));
}
#endif
if (!fixed_lease) /* Save the host if we found one. */
host_reference (&host, hp, MDL);
if (hp)
if (hp) {
if (!fixed_lease) /* Save the host if we found one. */
host_reference (&host, hp, MDL);
host_dereference (&hp, MDL);
}
find_lease_by_uid (&uid_lease, client_identifier.data,
client_identifier.len, MDL);
@@ -3207,12 +3208,30 @@ int find_lease (struct lease **lp,
log_info ("not choosing hardware lease.");
#endif
} else {
lease_reference (&lease, hw_lease, MDL);
if (lease -> host)
host_dereference (&lease -> host, MDL);
/* We're a little lax here - if the client didn't
send a client identifier and it's a bootp client,
but the lease has a client identifier, we still
let the client have a lease. */
if (!hw_lease -> uid_len ||
(have_client_identifier
? (hw_lease -> uid_len ==
client_identifier.len &&
!memcmp (hw_lease -> uid,
client_identifier.data,
client_identifier.len))
: packet -> packet_type == 0)) {
lease_reference (&lease, hw_lease, MDL);
if (lease -> host)
host_dereference (&lease -> host, MDL);
#if defined (DEBUG_FIND_LEASE)
log_info ("choosing hardware lease.");
log_info ("choosing hardware lease.");
#endif
} else {
#if defined (DEBUG_FIND_LEASE)
log_info ("not choosing hardware lease: %s.",
"uid mismatch");
#endif
}
}
lease_dereference (&hw_lease, MDL);
}