Look up hostnames for lease IP addresses on startup

diff --git a/common/memory.c b/common/memory.c
index c8faae2b9d18dbd3b8f81d4fa305353b14ad0295..ec94ab6e6d963f5f8da12b6b34033c9dccfb95a2 100644 (file)
--- a/common/memory.c
+++ b/common/memory.c
@@ -42,7 +42,7 @@
 
 #ifndef lint
 static char copyright[] =
-"$Id: memory.c,v 1.18 1996/08/27 09:51:24 mellon Exp $ Copyright (c) 1995, 1996 The Internet Software Consortium.  All rights reserved.\n";
+"$Id: memory.c,v 1.19 1996/08/28 01:40:01 mellon Exp $ Copyright (c) 1995, 1996 The Internet Software Consortium.  All rights reserved.\n";
 #endif /* not lint */
 
 #include "dhcpd.h"
@@ -201,6 +201,8 @@ void new_address_range (low, high, subnet, dynamic)
        int min, max, i;
        char lowbuf [16], highbuf [16], netbuf [16];
        struct shared_network *share = subnet -> shared_network;
+       struct hostent *h;
+       struct in_addr ia;
 
        /* All subnets should have attached shared network structures. */
        if (!share) {
@@ -262,6 +264,19 @@ void new_address_range (low, high, subnet, dynamic)
                address_range [i].shared_network = share;
                address_range [i].flags = dynamic ? DYNAMIC_BOOTP_OK : 0;
 
+               memcpy (&ia, address_range [i].ip_addr.iabuf, 4);
+               h = gethostbyaddr ((char *)&ia, sizeof ia, AF_INET);
+               if (!h)
+                       warn ("No hostname for %s", inet_ntoa (ia));
+               else {
+                       address_range [i].hostname =
+                               malloc (strlen (h -> h_name) + 1);
+                       if (!address_range [i].hostname)
+                               error ("no memory to save hostname %s.",
+                                      h -> h_name);
+                       strcpy (address_range [i].hostname, h -> h_name);
+               }
+
                /* Link this entry into the list. */
                address_range [i].next = share -> leases;
                address_range [i].prev = (struct lease *)0;

diff --git a/memory.c b/memory.c
index c8faae2b9d18dbd3b8f81d4fa305353b14ad0295..ec94ab6e6d963f5f8da12b6b34033c9dccfb95a2 100644 (file)
--- a/memory.c
+++ b/memory.c
@@ -42,7 +42,7 @@
 
 #ifndef lint
 static char copyright[] =
-"$Id: memory.c,v 1.18 1996/08/27 09:51:24 mellon Exp $ Copyright (c) 1995, 1996 The Internet Software Consortium.  All rights reserved.\n";
+"$Id: memory.c,v 1.19 1996/08/28 01:40:01 mellon Exp $ Copyright (c) 1995, 1996 The Internet Software Consortium.  All rights reserved.\n";
 #endif /* not lint */
 
 #include "dhcpd.h"
@@ -201,6 +201,8 @@ void new_address_range (low, high, subnet, dynamic)
        int min, max, i;
        char lowbuf [16], highbuf [16], netbuf [16];
        struct shared_network *share = subnet -> shared_network;
+       struct hostent *h;
+       struct in_addr ia;
 
        /* All subnets should have attached shared network structures. */
        if (!share) {
@@ -262,6 +264,19 @@ void new_address_range (low, high, subnet, dynamic)
                address_range [i].shared_network = share;
                address_range [i].flags = dynamic ? DYNAMIC_BOOTP_OK : 0;
 
+               memcpy (&ia, address_range [i].ip_addr.iabuf, 4);
+               h = gethostbyaddr ((char *)&ia, sizeof ia, AF_INET);
+               if (!h)
+                       warn ("No hostname for %s", inet_ntoa (ia));
+               else {
+                       address_range [i].hostname =
+                               malloc (strlen (h -> h_name) + 1);
+                       if (!address_range [i].hostname)
+                               error ("no memory to save hostname %s.",
+                                      h -> h_name);
+                       strcpy (address_range [i].hostname, h -> h_name);
+               }
+
                /* Link this entry into the list. */
                address_range [i].next = share -> leases;
                address_range [i].prev = (struct lease *)0;