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authorDenys Vlasenko <vda.linux@googlemail.com>2010-03-20 03:48:11 +0100
committerDenys Vlasenko <vda.linux@googlemail.com>2010-03-20 03:48:11 +0100
commit8a7c166ab9ad35eef8c90d6b0b3a25b8a9fbacd2 (patch)
tree150a58a93b9698a4db16187ef1952deda0acae16
parentde9e772f46eeba347c21014d4b159f28c2c2d9c1 (diff)
downloadbusybox-w32-8a7c166ab9ad35eef8c90d6b0b3a25b8a9fbacd2.tar.gz
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udhcp: move serverpacket.c into dhcpd.c, no other changes
function old new delta udhcpd_main 1480 1956 +476 send_inform 83 - -83 send_offer 376 - -376 ------------------------------------------------------------------------------ (add/remove: 0/3 grow/shrink: 1/0 up/down: 476/-459) Total: 17 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat
-rw-r--r--networking/udhcp/Kbuild3
-rw-r--r--networking/udhcp/dhcpd.c265
-rw-r--r--networking/udhcp/dhcpd.h8
-rw-r--r--networking/udhcp/serverpacket.c283
4 files changed, 263 insertions, 296 deletions
diff --git a/networking/udhcp/Kbuild b/networking/udhcp/Kbuild
index d1d35670f..138a950aa 100644
--- a/networking/udhcp/Kbuild
+++ b/networking/udhcp/Kbuild
@@ -17,8 +17,7 @@ lib-$(CONFIG_UDHCPC) += dhcpc.o clientpacket.o clientsocket.o \
17UDHCPC_NEEDS_ARPING-$(CONFIG_FEATURE_UDHCPC_ARPING) = y 17UDHCPC_NEEDS_ARPING-$(CONFIG_FEATURE_UDHCPC_ARPING) = y
18lib-$(UDHCPC_NEEDS_ARPING-y) += arpping.o 18lib-$(UDHCPC_NEEDS_ARPING-y) += arpping.o
19 19
20lib-$(CONFIG_UDHCPD) += dhcpd.o arpping.o files.o leases.o \ 20lib-$(CONFIG_UDHCPD) += dhcpd.o arpping.o files.o leases.o static_leases.o
21 serverpacket.o static_leases.o
22 21
23lib-$(CONFIG_DUMPLEASES) += dumpleases.o 22lib-$(CONFIG_DUMPLEASES) += dumpleases.o
24lib-$(CONFIG_DHCPRELAY) += dhcprelay.o 23lib-$(CONFIG_DHCPRELAY) += dhcprelay.o
diff --git a/networking/udhcp/dhcpd.c b/networking/udhcp/dhcpd.c
index dc5d9ffe9..26fb3045f 100644
--- a/networking/udhcp/dhcpd.c
+++ b/networking/udhcp/dhcpd.c
@@ -1,13 +1,24 @@
1/* vi: set sw=4 ts=4: */ 1/* vi: set sw=4 ts=4: */
2/* dhcpd.c 2/*
3 *
4 * udhcp Server 3 * udhcp Server
5 * Copyright (C) 1999 Matthew Ramsay <matthewr@moreton.com.au> 4 * Copyright (C) 1999 Matthew Ramsay <matthewr@moreton.com.au>
6 * Chris Trew <ctrew@moreton.com.au> 5 * Chris Trew <ctrew@moreton.com.au>
7 * 6 *
8 * Rewrite by Russ Dill <Russ.Dill@asu.edu> July 2001 7 * Rewrite by Russ Dill <Russ.Dill@asu.edu> July 2001
9 * 8 *
10 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. 9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
11 */ 22 */
12 23
13#include <syslog.h> 24#include <syslog.h>
@@ -17,6 +28,254 @@
17#include "options.h" 28#include "options.h"
18 29
19 30
31/* send a packet to gateway_nip using the kernel ip stack */
32static int send_packet_to_relay(struct dhcp_packet *dhcp_pkt)
33{
34 log1("Forwarding packet to relay");
35
36 return udhcp_send_kernel_packet(dhcp_pkt,
37 server_config.server_nip, SERVER_PORT,
38 dhcp_pkt->gateway_nip, SERVER_PORT);
39}
40
41/* send a packet to a specific mac address and ip address by creating our own ip packet */
42static int send_packet_to_client(struct dhcp_packet *dhcp_pkt, int force_broadcast)
43{
44 const uint8_t *chaddr;
45 uint32_t ciaddr;
46
47 // Was:
48 //if (force_broadcast) { /* broadcast */ }
49 //else if (dhcp_pkt->ciaddr) { /* unicast to dhcp_pkt->ciaddr */ }
50 //else if (dhcp_pkt->flags & htons(BROADCAST_FLAG)) { /* broadcast */ }
51 //else { /* unicast to dhcp_pkt->yiaddr */ }
52 // But this is wrong: yiaddr is _our_ idea what client's IP is
53 // (for example, from lease file). Client may not know that,
54 // and may not have UDP socket listening on that IP!
55 // We should never unicast to dhcp_pkt->yiaddr!
56 // dhcp_pkt->ciaddr, OTOH, comes from client's request packet,
57 // and can be used.
58
59 if (force_broadcast
60 || (dhcp_pkt->flags & htons(BROADCAST_FLAG))
61 || !dhcp_pkt->ciaddr
62 ) {
63 log1("Broadcasting packet to client");
64 ciaddr = INADDR_BROADCAST;
65 chaddr = MAC_BCAST_ADDR;
66 } else {
67 log1("Unicasting packet to client ciaddr");
68 ciaddr = dhcp_pkt->ciaddr;
69 chaddr = dhcp_pkt->chaddr;
70 }
71
72 return udhcp_send_raw_packet(dhcp_pkt,
73 /*src*/ server_config.server_nip, SERVER_PORT,
74 /*dst*/ ciaddr, CLIENT_PORT, chaddr,
75 server_config.ifindex);
76}
77
78/* send a dhcp packet, if force broadcast is set, the packet will be broadcast to the client */
79static int send_packet(struct dhcp_packet *dhcp_pkt, int force_broadcast)
80{
81 if (dhcp_pkt->gateway_nip)
82 return send_packet_to_relay(dhcp_pkt);
83 return send_packet_to_client(dhcp_pkt, force_broadcast);
84}
85
86static void init_packet(struct dhcp_packet *packet, struct dhcp_packet *oldpacket, char type)
87{
88 udhcp_init_header(packet, type);
89 packet->xid = oldpacket->xid;
90 memcpy(packet->chaddr, oldpacket->chaddr, sizeof(oldpacket->chaddr));
91 packet->flags = oldpacket->flags;
92 packet->gateway_nip = oldpacket->gateway_nip;
93 packet->ciaddr = oldpacket->ciaddr;
94 add_simple_option(packet->options, DHCP_SERVER_ID, server_config.server_nip);
95}
96
97/* add in the bootp options */
98static void add_bootp_options(struct dhcp_packet *packet)
99{
100 packet->siaddr_nip = server_config.siaddr_nip;
101 if (server_config.sname)
102 strncpy((char*)packet->sname, server_config.sname, sizeof(packet->sname) - 1);
103 if (server_config.boot_file)
104 strncpy((char*)packet->file, server_config.boot_file, sizeof(packet->file) - 1);
105}
106
107static uint32_t select_lease_time(struct dhcp_packet *packet)
108{
109 uint32_t lease_time_sec = server_config.max_lease_sec;
110 uint8_t *lease_time_opt = get_option(packet, DHCP_LEASE_TIME);
111 if (lease_time_opt) {
112 move_from_unaligned32(lease_time_sec, lease_time_opt);
113 lease_time_sec = ntohl(lease_time_sec);
114 if (lease_time_sec > server_config.max_lease_sec)
115 lease_time_sec = server_config.max_lease_sec;
116 if (lease_time_sec < server_config.min_lease_sec)
117 lease_time_sec = server_config.min_lease_sec;
118 }
119 return lease_time_sec;
120}
121
122/* send a DHCP OFFER to a DHCP DISCOVER */
123static int send_offer(struct dhcp_packet *oldpacket)
124{
125 struct dhcp_packet packet;
126 uint32_t req_nip;
127 uint32_t lease_time_sec = server_config.max_lease_sec;
128 uint32_t static_lease_ip;
129 uint8_t *req_ip_opt;
130 const char *p_host_name;
131 struct option_set *curr;
132 struct in_addr addr;
133
134 init_packet(&packet, oldpacket, DHCPOFFER);
135
136 static_lease_ip = get_static_nip_by_mac(server_config.static_leases, oldpacket->chaddr);
137
138 /* ADDME: if static, short circuit */
139 if (!static_lease_ip) {
140 struct dyn_lease *lease;
141
142 lease = find_lease_by_mac(oldpacket->chaddr);
143 /* The client is in our lease/offered table */
144 if (lease) {
145 signed_leasetime_t tmp = lease->expires - time(NULL);
146 if (tmp >= 0)
147 lease_time_sec = tmp;
148 packet.yiaddr = lease->lease_nip;
149 }
150 /* Or the client has requested an IP */
151 else if ((req_ip_opt = get_option(oldpacket, DHCP_REQUESTED_IP)) != NULL
152 /* (read IP) */
153 && (move_from_unaligned32(req_nip, req_ip_opt), 1)
154 /* and the IP is in the lease range */
155 && ntohl(req_nip) >= server_config.start_ip
156 && ntohl(req_nip) <= server_config.end_ip
157 /* and is not already taken/offered */
158 && (!(lease = find_lease_by_nip(req_nip))
159 /* or its taken, but expired */
160 || is_expired_lease(lease))
161 ) {
162 packet.yiaddr = req_nip;
163 }
164 /* Otherwise, find a free IP */
165 else {
166 packet.yiaddr = find_free_or_expired_nip(oldpacket->chaddr);
167 }
168
169 if (!packet.yiaddr) {
170 bb_error_msg("no IP addresses to give - OFFER abandoned");
171 return -1;
172 }
173 p_host_name = (const char*) get_option(oldpacket, DHCP_HOST_NAME);
174 if (add_lease(packet.chaddr, packet.yiaddr,
175 server_config.offer_time,
176 p_host_name,
177 p_host_name ? (unsigned char)p_host_name[OPT_LEN - OPT_DATA] : 0
178 ) == 0
179 ) {
180 bb_error_msg("lease pool is full - OFFER abandoned");
181 return -1;
182 }
183 lease_time_sec = select_lease_time(oldpacket);
184 } else {
185 /* It is a static lease... use it */
186 packet.yiaddr = static_lease_ip;
187 }
188
189 add_simple_option(packet.options, DHCP_LEASE_TIME, htonl(lease_time_sec));
190
191 curr = server_config.options;
192 while (curr) {
193 if (curr->data[OPT_CODE] != DHCP_LEASE_TIME)
194 add_option_string(packet.options, curr->data);
195 curr = curr->next;
196 }
197
198 add_bootp_options(&packet);
199
200 addr.s_addr = packet.yiaddr;
201 bb_info_msg("Sending OFFER of %s", inet_ntoa(addr));
202 return send_packet(&packet, 0);
203}
204
205static int send_NAK(struct dhcp_packet *oldpacket)
206{
207 struct dhcp_packet packet;
208
209 init_packet(&packet, oldpacket, DHCPNAK);
210
211 log1("Sending NAK");
212 return send_packet(&packet, 1);
213}
214
215static int send_ACK(struct dhcp_packet *oldpacket, uint32_t yiaddr)
216{
217 struct dhcp_packet packet;
218 struct option_set *curr;
219 uint32_t lease_time_sec;
220 struct in_addr addr;
221 const char *p_host_name;
222
223 init_packet(&packet, oldpacket, DHCPACK);
224 packet.yiaddr = yiaddr;
225
226 lease_time_sec = select_lease_time(oldpacket);
227
228 add_simple_option(packet.options, DHCP_LEASE_TIME, htonl(lease_time_sec));
229
230 curr = server_config.options;
231 while (curr) {
232 if (curr->data[OPT_CODE] != DHCP_LEASE_TIME)
233 add_option_string(packet.options, curr->data);
234 curr = curr->next;
235 }
236
237 add_bootp_options(&packet);
238
239 addr.s_addr = packet.yiaddr;
240 bb_info_msg("Sending ACK to %s", inet_ntoa(addr));
241
242 if (send_packet(&packet, 0) < 0)
243 return -1;
244
245 p_host_name = (const char*) get_option(oldpacket, DHCP_HOST_NAME);
246 add_lease(packet.chaddr, packet.yiaddr,
247 lease_time_sec,
248 p_host_name,
249 p_host_name ? (unsigned char)p_host_name[OPT_LEN - OPT_DATA] : 0
250 );
251 if (ENABLE_FEATURE_UDHCPD_WRITE_LEASES_EARLY) {
252 /* rewrite the file with leases at every new acceptance */
253 write_leases();
254 }
255
256 return 0;
257}
258
259static int send_inform(struct dhcp_packet *oldpacket)
260{
261 struct dhcp_packet packet;
262 struct option_set *curr;
263
264 init_packet(&packet, oldpacket, DHCPACK);
265
266 curr = server_config.options;
267 while (curr) {
268 if (curr->data[OPT_CODE] != DHCP_LEASE_TIME)
269 add_option_string(packet.options, curr->data);
270 curr = curr->next;
271 }
272
273 add_bootp_options(&packet);
274
275 return send_packet(&packet, 0);
276}
277
278
20/* globals */ 279/* globals */
21struct dyn_lease *g_leases; 280struct dyn_lease *g_leases;
22/* struct server_config_t server_config is in bb_common_bufsiz1 */ 281/* struct server_config_t server_config is in bb_common_bufsiz1 */
diff --git a/networking/udhcp/dhcpd.h b/networking/udhcp/dhcpd.h
index db2d1c776..b55fd6c06 100644
--- a/networking/udhcp/dhcpd.h
+++ b/networking/udhcp/dhcpd.h
@@ -124,14 +124,6 @@ void log_static_leases(struct static_lease **st_lease_pp) FAST_FUNC;
124#endif 124#endif
125 125
126 126
127/*** serverpacket.h ***/
128
129int send_offer(struct dhcp_packet *oldpacket) FAST_FUNC;
130int send_NAK(struct dhcp_packet *oldpacket) FAST_FUNC;
131int send_ACK(struct dhcp_packet *oldpacket, uint32_t yiaddr) FAST_FUNC;
132int send_inform(struct dhcp_packet *oldpacket) FAST_FUNC;
133
134
135/*** files.h ***/ 127/*** files.h ***/
136 128
137void read_config(const char *file) FAST_FUNC; 129void read_config(const char *file) FAST_FUNC;
diff --git a/networking/udhcp/serverpacket.c b/networking/udhcp/serverpacket.c
deleted file mode 100644
index b48e4159a..000000000
--- a/networking/udhcp/serverpacket.c
+++ /dev/null
@@ -1,283 +0,0 @@
1/* vi: set sw=4 ts=4: */
2/* serverpacket.c
3 *
4 * Construct and send DHCP server packets
5 *
6 * Russ Dill <Russ.Dill@asu.edu> July 2001
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 */
22
23#include "common.h"
24#include "dhcpc.h"
25#include "dhcpd.h"
26#include "options.h"
27
28
29/* send a packet to gateway_nip using the kernel ip stack */
30static int send_packet_to_relay(struct dhcp_packet *dhcp_pkt)
31{
32 log1("Forwarding packet to relay");
33
34 return udhcp_send_kernel_packet(dhcp_pkt,
35 server_config.server_nip, SERVER_PORT,
36 dhcp_pkt->gateway_nip, SERVER_PORT);
37}
38
39
40/* send a packet to a specific mac address and ip address by creating our own ip packet */
41static int send_packet_to_client(struct dhcp_packet *dhcp_pkt, int force_broadcast)
42{
43 const uint8_t *chaddr;
44 uint32_t ciaddr;
45
46 // Was:
47 //if (force_broadcast) { /* broadcast */ }
48 //else if (dhcp_pkt->ciaddr) { /* unicast to dhcp_pkt->ciaddr */ }
49 //else if (dhcp_pkt->flags & htons(BROADCAST_FLAG)) { /* broadcast */ }
50 //else { /* unicast to dhcp_pkt->yiaddr */ }
51 // But this is wrong: yiaddr is _our_ idea what client's IP is
52 // (for example, from lease file). Client may not know that,
53 // and may not have UDP socket listening on that IP!
54 // We should never unicast to dhcp_pkt->yiaddr!
55 // dhcp_pkt->ciaddr, OTOH, comes from client's request packet,
56 // and can be used.
57
58 if (force_broadcast
59 || (dhcp_pkt->flags & htons(BROADCAST_FLAG))
60 || !dhcp_pkt->ciaddr
61 ) {
62 log1("Broadcasting packet to client");
63 ciaddr = INADDR_BROADCAST;
64 chaddr = MAC_BCAST_ADDR;
65 } else {
66 log1("Unicasting packet to client ciaddr");
67 ciaddr = dhcp_pkt->ciaddr;
68 chaddr = dhcp_pkt->chaddr;
69 }
70
71 return udhcp_send_raw_packet(dhcp_pkt,
72 /*src*/ server_config.server_nip, SERVER_PORT,
73 /*dst*/ ciaddr, CLIENT_PORT, chaddr,
74 server_config.ifindex);
75}
76
77
78/* send a dhcp packet, if force broadcast is set, the packet will be broadcast to the client */
79static int send_packet(struct dhcp_packet *dhcp_pkt, int force_broadcast)
80{
81 if (dhcp_pkt->gateway_nip)
82 return send_packet_to_relay(dhcp_pkt);
83 return send_packet_to_client(dhcp_pkt, force_broadcast);
84}
85
86
87static void init_packet(struct dhcp_packet *packet, struct dhcp_packet *oldpacket, char type)
88{
89 udhcp_init_header(packet, type);
90 packet->xid = oldpacket->xid;
91 memcpy(packet->chaddr, oldpacket->chaddr, sizeof(oldpacket->chaddr));
92 packet->flags = oldpacket->flags;
93 packet->gateway_nip = oldpacket->gateway_nip;
94 packet->ciaddr = oldpacket->ciaddr;
95 add_simple_option(packet->options, DHCP_SERVER_ID, server_config.server_nip);
96}
97
98
99/* add in the bootp options */
100static void add_bootp_options(struct dhcp_packet *packet)
101{
102 packet->siaddr_nip = server_config.siaddr_nip;
103 if (server_config.sname)
104 strncpy((char*)packet->sname, server_config.sname, sizeof(packet->sname) - 1);
105 if (server_config.boot_file)
106 strncpy((char*)packet->file, server_config.boot_file, sizeof(packet->file) - 1);
107}
108
109
110static uint32_t select_lease_time(struct dhcp_packet *packet)
111{
112 uint32_t lease_time_sec = server_config.max_lease_sec;
113 uint8_t *lease_time_opt = get_option(packet, DHCP_LEASE_TIME);
114 if (lease_time_opt) {
115 move_from_unaligned32(lease_time_sec, lease_time_opt);
116 lease_time_sec = ntohl(lease_time_sec);
117 if (lease_time_sec > server_config.max_lease_sec)
118 lease_time_sec = server_config.max_lease_sec;
119 if (lease_time_sec < server_config.min_lease_sec)
120 lease_time_sec = server_config.min_lease_sec;
121 }
122 return lease_time_sec;
123}
124
125
126/* send a DHCP OFFER to a DHCP DISCOVER */
127int FAST_FUNC send_offer(struct dhcp_packet *oldpacket)
128{
129 struct dhcp_packet packet;
130 uint32_t req_nip;
131 uint32_t lease_time_sec = server_config.max_lease_sec;
132 uint32_t static_lease_ip;
133 uint8_t *req_ip_opt;
134 const char *p_host_name;
135 struct option_set *curr;
136 struct in_addr addr;
137
138 init_packet(&packet, oldpacket, DHCPOFFER);
139
140 static_lease_ip = get_static_nip_by_mac(server_config.static_leases, oldpacket->chaddr);
141
142 /* ADDME: if static, short circuit */
143 if (!static_lease_ip) {
144 struct dyn_lease *lease;
145
146 lease = find_lease_by_mac(oldpacket->chaddr);
147 /* The client is in our lease/offered table */
148 if (lease) {
149 signed_leasetime_t tmp = lease->expires - time(NULL);
150 if (tmp >= 0)
151 lease_time_sec = tmp;
152 packet.yiaddr = lease->lease_nip;
153 }
154 /* Or the client has requested an IP */
155 else if ((req_ip_opt = get_option(oldpacket, DHCP_REQUESTED_IP)) != NULL
156 /* (read IP) */
157 && (move_from_unaligned32(req_nip, req_ip_opt), 1)
158 /* and the IP is in the lease range */
159 && ntohl(req_nip) >= server_config.start_ip
160 && ntohl(req_nip) <= server_config.end_ip
161 /* and is not already taken/offered */
162 && (!(lease = find_lease_by_nip(req_nip))
163 /* or its taken, but expired */
164 || is_expired_lease(lease))
165 ) {
166 packet.yiaddr = req_nip;
167 }
168 /* Otherwise, find a free IP */
169 else {
170 packet.yiaddr = find_free_or_expired_nip(oldpacket->chaddr);
171 }
172
173 if (!packet.yiaddr) {
174 bb_error_msg("no IP addresses to give - OFFER abandoned");
175 return -1;
176 }
177 p_host_name = (const char*) get_option(oldpacket, DHCP_HOST_NAME);
178 if (add_lease(packet.chaddr, packet.yiaddr,
179 server_config.offer_time,
180 p_host_name,
181 p_host_name ? (unsigned char)p_host_name[OPT_LEN - OPT_DATA] : 0
182 ) == 0
183 ) {
184 bb_error_msg("lease pool is full - OFFER abandoned");
185 return -1;
186 }
187 lease_time_sec = select_lease_time(oldpacket);
188 } else {
189 /* It is a static lease... use it */
190 packet.yiaddr = static_lease_ip;
191 }
192
193 add_simple_option(packet.options, DHCP_LEASE_TIME, htonl(lease_time_sec));
194
195 curr = server_config.options;
196 while (curr) {
197 if (curr->data[OPT_CODE] != DHCP_LEASE_TIME)
198 add_option_string(packet.options, curr->data);
199 curr = curr->next;
200 }
201
202 add_bootp_options(&packet);
203
204 addr.s_addr = packet.yiaddr;
205 bb_info_msg("Sending OFFER of %s", inet_ntoa(addr));
206 return send_packet(&packet, 0);
207}
208
209
210int FAST_FUNC send_NAK(struct dhcp_packet *oldpacket)
211{
212 struct dhcp_packet packet;
213
214 init_packet(&packet, oldpacket, DHCPNAK);
215
216 log1("Sending NAK");
217 return send_packet(&packet, 1);
218}
219
220
221int FAST_FUNC send_ACK(struct dhcp_packet *oldpacket, uint32_t yiaddr)
222{
223 struct dhcp_packet packet;
224 struct option_set *curr;
225 uint32_t lease_time_sec;
226 struct in_addr addr;
227 const char *p_host_name;
228
229 init_packet(&packet, oldpacket, DHCPACK);
230 packet.yiaddr = yiaddr;
231
232 lease_time_sec = select_lease_time(oldpacket);
233
234 add_simple_option(packet.options, DHCP_LEASE_TIME, htonl(lease_time_sec));
235
236 curr = server_config.options;
237 while (curr) {
238 if (curr->data[OPT_CODE] != DHCP_LEASE_TIME)
239 add_option_string(packet.options, curr->data);
240 curr = curr->next;
241 }
242
243 add_bootp_options(&packet);
244
245 addr.s_addr = packet.yiaddr;
246 bb_info_msg("Sending ACK to %s", inet_ntoa(addr));
247
248 if (send_packet(&packet, 0) < 0)
249 return -1;
250
251 p_host_name = (const char*) get_option(oldpacket, DHCP_HOST_NAME);
252 add_lease(packet.chaddr, packet.yiaddr,
253 lease_time_sec,
254 p_host_name,
255 p_host_name ? (unsigned char)p_host_name[OPT_LEN - OPT_DATA] : 0
256 );
257 if (ENABLE_FEATURE_UDHCPD_WRITE_LEASES_EARLY) {
258 /* rewrite the file with leases at every new acceptance */
259 write_leases();
260 }
261
262 return 0;
263}
264
265
266int FAST_FUNC send_inform(struct dhcp_packet *oldpacket)
267{
268 struct dhcp_packet packet;
269 struct option_set *curr;
270
271 init_packet(&packet, oldpacket, DHCPACK);
272
273 curr = server_config.options;
274 while (curr) {
275 if (curr->data[OPT_CODE] != DHCP_LEASE_TIME)
276 add_option_string(packet.options, curr->data);
277 curr = curr->next;
278 }
279
280 add_bootp_options(&packet);
281
282 return send_packet(&packet, 0);
283}
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2026-01-27 06:22:28 +0000