1 | /* vi: set sw=4 ts=4: */
|
---|
2 | /* common.h
|
---|
3 | *
|
---|
4 | * Russ Dill <Russ.Dill@asu.edu> September 2001
|
---|
5 | * Rewritten by Vladimir Oleynik <dzo@simtreas.ru> (C) 2003
|
---|
6 | *
|
---|
7 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
|
---|
8 | */
|
---|
9 |
|
---|
10 | #ifndef _COMMON_H
|
---|
11 | #define _COMMON_H
|
---|
12 |
|
---|
13 | #include "libbb.h"
|
---|
14 |
|
---|
15 | #define DEFAULT_SCRIPT "/usr/share/udhcpc/default.script"
|
---|
16 |
|
---|
17 | extern const uint8_t MAC_BCAST_ADDR[6]; /* six all-ones */
|
---|
18 |
|
---|
19 | /*** packet.h ***/
|
---|
20 |
|
---|
21 | #include <netinet/udp.h>
|
---|
22 | #include <netinet/ip.h>
|
---|
23 |
|
---|
24 | struct dhcpMessage {
|
---|
25 | uint8_t op;
|
---|
26 | uint8_t htype;
|
---|
27 | uint8_t hlen;
|
---|
28 | uint8_t hops;
|
---|
29 | uint32_t xid;
|
---|
30 | uint16_t secs;
|
---|
31 | uint16_t flags;
|
---|
32 | uint32_t ciaddr;
|
---|
33 | uint32_t yiaddr;
|
---|
34 | uint32_t siaddr;
|
---|
35 | uint32_t giaddr;
|
---|
36 | uint8_t chaddr[16];
|
---|
37 | uint8_t sname[64];
|
---|
38 | uint8_t file[128];
|
---|
39 | uint32_t cookie;
|
---|
40 | uint8_t options[308]; /* 312 - cookie */
|
---|
41 | };
|
---|
42 |
|
---|
43 | struct udp_dhcp_packet {
|
---|
44 | struct iphdr ip;
|
---|
45 | struct udphdr udp;
|
---|
46 | struct dhcpMessage data;
|
---|
47 | };
|
---|
48 |
|
---|
49 | void udhcp_init_header(struct dhcpMessage *packet, char type);
|
---|
50 | int udhcp_get_packet(struct dhcpMessage *packet, int fd);
|
---|
51 | uint16_t udhcp_checksum(void *addr, int count);
|
---|
52 | int udhcp_raw_packet(struct dhcpMessage *payload,
|
---|
53 | uint32_t source_ip, int source_port,
|
---|
54 | uint32_t dest_ip, int dest_port,
|
---|
55 | const uint8_t *dest_arp, int ifindex);
|
---|
56 | int udhcp_kernel_packet(struct dhcpMessage *payload,
|
---|
57 | uint32_t source_ip, int source_port,
|
---|
58 | uint32_t dest_ip, int dest_port);
|
---|
59 |
|
---|
60 |
|
---|
61 | /**/
|
---|
62 |
|
---|
63 | void udhcp_run_script(struct dhcpMessage *packet, const char *name);
|
---|
64 |
|
---|
65 | // Still need to clean these up...
|
---|
66 |
|
---|
67 | /* from options.h */
|
---|
68 | #define get_option udhcp_get_option
|
---|
69 | #define end_option udhcp_end_option
|
---|
70 | #define add_option_string udhcp_add_option_string
|
---|
71 | #define add_simple_option udhcp_add_simple_option
|
---|
72 | #define option_lengths udhcp_option_lengths
|
---|
73 | /* from socket.h */
|
---|
74 | #define listen_socket udhcp_listen_socket
|
---|
75 | #define read_interface udhcp_read_interface
|
---|
76 | /* from dhcpc.h */
|
---|
77 | #define client_config udhcp_client_config
|
---|
78 | /* from dhcpd.h */
|
---|
79 | #define server_config udhcp_server_config
|
---|
80 |
|
---|
81 | void udhcp_sp_setup(void);
|
---|
82 | int udhcp_sp_fd_set(fd_set *rfds, int extra_fd);
|
---|
83 | int udhcp_sp_read(fd_set *rfds);
|
---|
84 | int raw_socket(int ifindex);
|
---|
85 | int read_interface(const char *interface, int *ifindex, uint32_t *addr, uint8_t *arp);
|
---|
86 | int listen_socket(/*uint32_t ip,*/ int port, const char *inf);
|
---|
87 | /* Returns 1 if no reply received */
|
---|
88 | int arpping(uint32_t test_ip, uint32_t from_ip, uint8_t *from_mac, const char *interface);
|
---|
89 |
|
---|
90 | #if ENABLE_FEATURE_UDHCP_DEBUG
|
---|
91 | # define DEBUG(str, args...) bb_info_msg(str, ## args)
|
---|
92 | #else
|
---|
93 | # define DEBUG(str, args...) do {;} while (0)
|
---|
94 | #endif
|
---|
95 |
|
---|
96 | #endif
|
---|