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1 office 1 /**
2 * @file BDHCPClient.h
3 * @author Ambroz Bizjak <ambrop7@gmail.com>
4 *
5 * @section LICENSE
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. Neither the name of the author nor the
15 * names of its contributors may be used to endorse or promote products
16 * derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
21 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
22 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
25 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
27 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 *
29 * @section DESCRIPTION
30 *
31 * DHCP client.
32 */
33  
34 #ifndef BADVPN_DHCPCLIENT_BDHCPCLIENT_H
35 #define BADVPN_DHCPCLIENT_BDHCPCLIENT_H
36  
37 #include <base/DebugObject.h>
38 #include <system/BDatagram.h>
39 #include <flow/PacketCopier.h>
40 #include <flow/SinglePacketBuffer.h>
41 #include <dhcpclient/BDHCPClientCore.h>
42 #include <dhcpclient/DHCPIpUdpDecoder.h>
43 #include <dhcpclient/DHCPIpUdpEncoder.h>
44  
45 #define BDHCPCLIENT_EVENT_UP 1
46 #define BDHCPCLIENT_EVENT_DOWN 2
47 #define BDHCPCLIENT_EVENT_ERROR 3
48  
49 #define BDHCPCLIENT_MAX_DOMAIN_NAME_SERVERS BDHCPCLIENTCORE_MAX_DOMAIN_NAME_SERVERS
50  
51 typedef void (*BDHCPClient_handler) (void *user, int event);
52  
53 typedef struct {
54 BReactor *reactor;
55 BDatagram dgram;
56 BDHCPClient_handler handler;
57 void *user;
58 PacketCopier send_copier;
59 DHCPIpUdpEncoder send_encoder;
60 SinglePacketBuffer send_buffer;
61 SinglePacketBuffer recv_buffer;
62 DHCPIpUdpDecoder recv_decoder;
63 PacketCopier recv_copier;
64 BDHCPClientCore dhcp;
65 int up;
66 DebugError d_err;
67 DebugObject d_obj;
68 } BDHCPClient;
69  
70 struct BDHCPClient_opts {
71 const char *hostname;
72 const char *vendorclassid;
73 const uint8_t *clientid;
74 size_t clientid_len;
75 int auto_clientid;
76 };
77  
78 int BDHCPClient_Init (BDHCPClient *o, const char *ifname, struct BDHCPClient_opts opts, BReactor *reactor, BRandom2 *random2, BDHCPClient_handler handler, void *user);
79 void BDHCPClient_Free (BDHCPClient *o);
80 int BDHCPClient_IsUp (BDHCPClient *o);
81 void BDHCPClient_GetClientIP (BDHCPClient *o, uint32_t *out_ip);
82 void BDHCPClient_GetClientMask (BDHCPClient *o, uint32_t *out_mask);
83 int BDHCPClient_GetRouter (BDHCPClient *o, uint32_t *out_router);
84 int BDHCPClient_GetDNS (BDHCPClient *o, uint32_t *out_dns_servers, size_t max_dns_servers);
85 void BDHCPClient_GetServerMAC (BDHCPClient *o, uint8_t *out_mac);
86  
87 #endif