mirror of
https://github.com/sheumann/hush.git
synced 2024-11-05 06:07:00 +00:00
111 lines
2.8 KiB
C
111 lines
2.8 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/* common.h
|
|
*
|
|
* Russ Dill <Russ.Dill@asu.edu> September 2001
|
|
* Rewritten by Vladimir Oleynik <dzo@simtreas.ru> (C) 2003
|
|
*
|
|
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
|
|
*/
|
|
|
|
#ifndef _COMMON_H
|
|
#define _COMMON_H
|
|
|
|
#include "libbb.h"
|
|
#include <netinet/udp.h>
|
|
#include <netinet/ip.h>
|
|
|
|
#if __GNUC_PREREQ(4,1)
|
|
# pragma GCC visibility push(hidden)
|
|
#endif
|
|
|
|
#define DEFAULT_SCRIPT CONFIG_DHCPC_DEFAULT_SCRIPT
|
|
|
|
extern const uint8_t MAC_BCAST_ADDR[6]; /* six all-ones */
|
|
|
|
/*** packet.h ***/
|
|
|
|
#define DHCP_OPTIONS_BUFSIZE 308
|
|
|
|
struct dhcpMessage {
|
|
uint8_t op;
|
|
uint8_t htype;
|
|
uint8_t hlen;
|
|
uint8_t hops;
|
|
uint32_t xid;
|
|
uint16_t secs;
|
|
uint16_t flags;
|
|
uint32_t ciaddr;
|
|
uint32_t yiaddr;
|
|
uint32_t siaddr;
|
|
uint32_t giaddr;
|
|
uint8_t chaddr[16];
|
|
uint8_t sname[64];
|
|
uint8_t file[128];
|
|
uint32_t cookie;
|
|
uint8_t options[DHCP_OPTIONS_BUFSIZE + CONFIG_UDHCPC_SLACK_FOR_BUGGY_SERVERS];
|
|
} PACKED;
|
|
|
|
struct udp_dhcp_packet {
|
|
struct iphdr ip;
|
|
struct udphdr udp;
|
|
struct dhcpMessage data;
|
|
} PACKED;
|
|
|
|
/* Let's see whether compiler understood us right */
|
|
struct BUG_bad_sizeof_struct_udp_dhcp_packet {
|
|
char BUG_bad_sizeof_struct_udp_dhcp_packet
|
|
[(sizeof(struct udp_dhcp_packet) != 576 + CONFIG_UDHCPC_SLACK_FOR_BUGGY_SERVERS) ? -1 : 1];
|
|
};
|
|
|
|
uint16_t udhcp_checksum(void *addr, int count);
|
|
|
|
void udhcp_init_header(struct dhcpMessage *packet, char type);
|
|
|
|
/*int udhcp_recv_raw_packet(struct dhcpMessage *payload, int fd); - in dhcpc.h */
|
|
int udhcp_recv_kernel_packet(struct dhcpMessage *packet, int fd);
|
|
|
|
int udhcp_send_raw_packet(struct dhcpMessage *payload,
|
|
uint32_t source_ip, int source_port,
|
|
uint32_t dest_ip, int dest_port,
|
|
const uint8_t *dest_arp, int ifindex);
|
|
int udhcp_send_kernel_packet(struct dhcpMessage *payload,
|
|
uint32_t source_ip, int source_port,
|
|
uint32_t dest_ip, int dest_port);
|
|
|
|
|
|
/**/
|
|
|
|
void udhcp_run_script(struct dhcpMessage *packet, const char *name);
|
|
|
|
// Still need to clean these up...
|
|
|
|
/* from options.h */
|
|
#define get_option udhcp_get_option
|
|
#define end_option udhcp_end_option
|
|
#define add_option_string udhcp_add_option_string
|
|
#define add_simple_option udhcp_add_simple_option
|
|
/* from socket.h */
|
|
#define listen_socket udhcp_listen_socket
|
|
#define read_interface udhcp_read_interface
|
|
|
|
void udhcp_sp_setup(void);
|
|
int udhcp_sp_fd_set(fd_set *rfds, int extra_fd);
|
|
int udhcp_sp_read(const fd_set *rfds);
|
|
int raw_socket(int ifindex);
|
|
int read_interface(const char *interface, int *ifindex, uint32_t *addr, uint8_t *arp);
|
|
int listen_socket(/*uint32_t ip,*/ int port, const char *inf);
|
|
/* Returns 1 if no reply received */
|
|
int arpping(uint32_t test_ip, uint32_t from_ip, uint8_t *from_mac, const char *interface);
|
|
|
|
#if ENABLE_FEATURE_UDHCP_DEBUG
|
|
# define DEBUG(str, args...) bb_info_msg("### " str, ## args)
|
|
#else
|
|
# define DEBUG(str, args...) do {;} while (0)
|
|
#endif
|
|
|
|
#if __GNUC_PREREQ(4,1)
|
|
# pragma GCC visibility pop
|
|
#endif
|
|
|
|
#endif
|