Openwrt/obsolete-buildroot/sources/busybox-openwrt-120-udhcp.patch

diff -urN busybox-dist/networking/udhcp/dumpleases.c busybox/networking/udhcp/dumpleases.c
--- busybox-dist/networking/udhcp/dumpleases.c	2004-03-15 02:29:00.000000000 -0600
+++ busybox/networking/udhcp/dumpleases.c	2004-03-16 09:52:32.000000000 -0600
@@ -42,7 +42,7 @@
 #endif
 {
 	FILE *fp;
-	int i, c, mode = REMAINING;
+	int i, c, mode = ABSOLUTE;
 	long expires;
 	const char *file = LEASES_FILE;
 	struct dhcpOfferedAddr lease;
@@ -73,7 +73,7 @@
 
 	fp = xfopen(file, "r");
 
-	printf("Mac Address       IP-Address      Expires %s\n", mode == REMAINING ? "in" : "at");
+	printf("Mac Address       IP-Address      Hostname        Expires %s\n", mode == REMAINING ? "in" : "at");
 	/*     "00:00:00:00:00:00 255.255.255.255 Wed Jun 30 21:49:08 1993" */
 	while (fread(&lease, sizeof(lease), 1, fp)) {
 
@@ -84,7 +84,8 @@
 		addr.s_addr = lease.yiaddr;
 		printf(" %-15s", inet_ntoa(addr));
 		expires = ntohl(lease.expires);
-		printf(" ");
+		//expires = lease.expires;
+		printf(" %-15s ",lease.hostname);
 		if (mode == REMAINING) {
 			if (!expires) printf("expired\n");
 			else {
diff -urN busybox-dist/networking/udhcp/files.c busybox/networking/udhcp/files.c
--- busybox-dist/networking/udhcp/files.c	2004-03-15 02:29:00.000000000 -0600
+++ busybox/networking/udhcp/files.c	2004-03-16 09:50:04.000000000 -0600
@@ -281,7 +281,7 @@
 		if (lease.yiaddr >= server_config.start && lease.yiaddr <= server_config.end) {
 			lease.expires = ntohl(lease.expires);
 			if (!server_config.remaining) lease.expires -= time(0);
-			if (!(add_lease(lease.chaddr, lease.yiaddr, lease.expires))) {
+			if (!(add_lease(lease.hostname, lease.chaddr, lease.yiaddr, lease.expires))) {
 				LOG(LOG_WARNING, "Too many leases while loading %s\n", file);
 				break;
 			}
diff -urN busybox-dist/networking/udhcp/leases.c busybox/networking/udhcp/leases.c
--- busybox-dist/networking/udhcp/leases.c	2004-03-15 02:29:00.000000000 -0600
+++ busybox/networking/udhcp/leases.c	2004-03-16 09:50:04.000000000 -0600
@@ -35,7 +35,7 @@
 
 
 /* add a lease into the table, clearing out any old ones */
-struct dhcpOfferedAddr *add_lease(uint8_t *chaddr, uint32_t yiaddr, unsigned long lease)
+struct dhcpOfferedAddr *add_lease(uint8_t *hostname, uint8_t *chaddr, uint32_t yiaddr, unsigned long lease)
 {
 	struct dhcpOfferedAddr *oldest;
 
@@ -45,6 +45,13 @@
 	oldest = oldest_expired_lease();
 
 	if (oldest) {
+		if (hostname) {
+			uint8_t length = *(hostname-1);
+			if (length>15) length=15;
+			memcpy(oldest->hostname,hostname,length);
+			oldest->hostname[length]=0;
+		}
+		
 		memcpy(oldest->chaddr, chaddr, 16);
 		oldest->yiaddr = yiaddr;
 		oldest->expires = time(0) + lease;
@@ -112,7 +119,7 @@
 		temp.s_addr = addr;
 		LOG(LOG_INFO, "%s belongs to someone, reserving it for %ld seconds",
 			inet_ntoa(temp), server_config.conflict_time);
-		add_lease(blank_chaddr, addr, server_config.conflict_time);
+		add_lease(blank_chaddr, blank_chaddr, addr, server_config.conflict_time);
 		return 1;
 	} else return 0;
 }
diff -urN busybox-dist/networking/udhcp/leases.h busybox/networking/udhcp/leases.h
--- busybox-dist/networking/udhcp/leases.h	2004-01-30 17:45:12.000000000 -0600
+++ busybox/networking/udhcp/leases.h	2004-03-16 09:50:04.000000000 -0600
@@ -4,6 +4,7 @@
 
 
 struct dhcpOfferedAddr {
+	uint8_t hostname[16];
 	uint8_t chaddr[16];
 	uint32_t yiaddr;	/* network order */
 	uint32_t expires;	/* host order */
@@ -12,7 +13,7 @@
 extern uint8_t blank_chaddr[];
 
 void clear_lease(uint8_t *chaddr, uint32_t yiaddr);
-struct dhcpOfferedAddr *add_lease(uint8_t *chaddr, uint32_t yiaddr, unsigned long lease);
+struct dhcpOfferedAddr *add_lease(uint8_t *hostname, uint8_t *chaddr, uint32_t yiaddr, unsigned long lease);
 int lease_expired(struct dhcpOfferedAddr *lease);
 struct dhcpOfferedAddr *oldest_expired_lease(void);
 struct dhcpOfferedAddr *find_lease_by_chaddr(uint8_t *chaddr);
diff -urN busybox-dist/networking/udhcp/serverpacket.c busybox/networking/udhcp/serverpacket.c
--- busybox-dist/networking/udhcp/serverpacket.c	2004-03-15 02:29:01.000000000 -0600
+++ busybox/networking/udhcp/serverpacket.c	2004-03-16 09:51:36.000000000 -0600
@@ -29,6 +29,7 @@
 #include "dhcpd.h"
 #include "options.h"
 #include "common.h"
+#include "files.h"
 
 /* send a packet to giaddr using the kernel ip stack */
 static int send_packet_to_relay(struct dhcpMessage *payload)
@@ -152,7 +153,7 @@
 		return -1;
 	}
 
-	if (!add_lease(packet.chaddr, packet.yiaddr, server_config.offer_time)) {
+	if (!add_lease(get_option(oldpacket, DHCP_HOST_NAME), packet.chaddr, packet.yiaddr, server_config.offer_time)) {
 		LOG(LOG_WARNING, "lease pool is full -- OFFER abandoned");
 		return -1;
 	}
@@ -233,7 +234,9 @@
 	if (send_packet(&packet, 0) < 0)
 		return -1;
 
-	add_lease(packet.chaddr, packet.yiaddr, lease_time_align);
+	add_lease(get_option(oldpacket, DHCP_HOST_NAME), packet.chaddr, packet.yiaddr, lease_time_align);
+
+	write_leases();
 
 	return 0;
 }