mirror of
https://github.com/sheumann/hush.git
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fbd2918f5c
a few global variables reduced to smallints function old new delta add_lease 75 227 +152 static.blank_chaddr - 16 +16 MAC_BCAST_ADDR - 6 +6 sockfd 4 8 +4 udhcp_run_script 1153 1155 +2 state 8 5 -3 listen_mode 4 1 -3 perform_release 152 148 -4 fd 8 4 -4 blank_chaddr 16 - -16 udhcpc_main 2518 2497 -21 .rodata 131864 131832 -32 oldest_expired_lease 61 - -61 clear_lease 127 - -127 ------------------------------------------------------------------------------ (add/remove: 2/3 grow/shrink: 3/6 up/down: 180/-271) Total: -91 bytes
99 lines
2.5 KiB
C
99 lines
2.5 KiB
C
/* vi: set sw=4 ts=4: */
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/* common.h
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*
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* Russ Dill <Russ.Dill@asu.edu> September 2001
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* Rewritten by Vladimir Oleynik <dzo@simtreas.ru> (C) 2003
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*
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* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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*/
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#ifndef _COMMON_H
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#define _COMMON_H
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#include "busybox.h"
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#define DEFAULT_SCRIPT "/usr/share/udhcpc/default.script"
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extern const uint8_t MAC_BCAST_ADDR[6]; /* six all-ones */
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/*** packet.h ***/
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#include <netinet/udp.h>
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#include <netinet/ip.h>
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struct dhcpMessage {
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uint8_t op;
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uint8_t htype;
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uint8_t hlen;
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uint8_t hops;
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uint32_t xid;
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uint16_t secs;
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uint16_t flags;
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uint32_t ciaddr;
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uint32_t yiaddr;
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uint32_t siaddr;
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uint32_t giaddr;
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uint8_t chaddr[16];
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uint8_t sname[64];
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uint8_t file[128];
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uint32_t cookie;
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uint8_t options[308]; /* 312 - cookie */
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};
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struct udp_dhcp_packet {
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struct iphdr ip;
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struct udphdr udp;
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struct dhcpMessage data;
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};
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void udhcp_init_header(struct dhcpMessage *packet, char type);
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int udhcp_get_packet(struct dhcpMessage *packet, int fd);
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uint16_t udhcp_checksum(void *addr, int count);
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int udhcp_raw_packet(struct dhcpMessage *payload,
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uint32_t source_ip, int source_port,
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uint32_t dest_ip, int dest_port,
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const uint8_t *dest_arp, int ifindex);
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int udhcp_kernel_packet(struct dhcpMessage *payload,
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uint32_t source_ip, int source_port,
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uint32_t dest_ip, int dest_port);
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/**/
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void udhcp_make_pidfile(const char *pidfile);
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void udhcp_run_script(struct dhcpMessage *packet, const char *name);
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// Still need to clean these up...
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/* from options.h */
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#define get_option udhcp_get_option
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#define end_option udhcp_end_option
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#define add_option_string udhcp_add_option_string
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#define add_simple_option udhcp_add_simple_option
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#define option_lengths udhcp_option_lengths
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/* from socket.h */
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#define listen_socket udhcp_listen_socket
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#define read_interface udhcp_read_interface
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/* from dhcpc.h */
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#define client_config udhcp_client_config
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/* from dhcpd.h */
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#define server_config udhcp_server_config
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long uptime(void);
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void udhcp_sp_setup(void);
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int udhcp_sp_fd_set(fd_set *rfds, int extra_fd);
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int udhcp_sp_read(fd_set *rfds);
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int raw_socket(int ifindex);
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int read_interface(const char *interface, int *ifindex, uint32_t *addr, uint8_t *arp);
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int listen_socket(uint32_t ip, int port, const char *inf);
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int arpping(uint32_t yiaddr, uint32_t ip, uint8_t *arp, char *interface);
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#if ENABLE_FEATURE_UDHCP_DEBUG
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# define DEBUG(str, args...) bb_info_msg(str, ## args)
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#else
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# define DEBUG(str, args...) do {;} while (0)
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#endif
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#endif
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