diff options
Diffstat (limited to 'release/src/router/busybox/networking/udhcp/common.h')
| -rw-r--r-- | release/src/router/busybox/networking/udhcp/common.h | 132 |
1 files changed, 93 insertions, 39 deletions
diff --git a/release/src/router/busybox/networking/udhcp/common.h b/release/src/router/busybox/networking/udhcp/common.h index 768f551b..0cea7aff 100644 --- a/release/src/router/busybox/networking/udhcp/common.h +++ b/release/src/router/busybox/networking/udhcp/common.h @@ -1,52 +1,106 @@ +/* vi: set sw=4 ts=4: */ /* common.h * - * Russ Dill <Russ.Dill@asu.edu> Soptember 2001 - * Rewrited by Vladimir Oleynik <dzo@simtreas.ru> (C) 2003 + * Russ Dill <Russ.Dill@asu.edu> September 2001 + * Rewritten by Vladimir Oleynik <dzo@simtreas.ru> (C) 2003 * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. */ +#ifndef UDHCP_COMMON_H +#define UDHCP_COMMON_H 1 + +#include "libbb.h" +#include <netinet/udp.h> +#include <netinet/ip.h> + +PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN + +#define DEFAULT_SCRIPT CONFIG_UDHCPC_DEFAULT_SCRIPT + +extern const uint8_t MAC_BCAST_ADDR[6]; /* six all-ones */ -#include "version.h" -#include "busybox.h" - -#ifndef CONFIG_FEATURE_UDHCP_SYSLOG -enum syslog_levels { - LOG_EMERG = 0, - LOG_ALERT, - LOG_CRIT, - LOG_WARNING, - LOG_ERR, - LOG_INFO, - LOG_DEBUG +/*** packet.h ***/ + +#define DHCP_OPTIONS_BUFSIZE 308 + +struct dhcpMessage { + uint8_t op; /* 1 = BOOTREQUEST, 2 = BOOTREPLY */ + uint8_t htype; /* hardware address type. 1 = 10mb ethernet */ + uint8_t hlen; /* hardware address length */ + uint8_t hops; /* used by relay agents only */ + uint32_t xid; /* unique id */ + uint16_t secs; /* elapsed since client began acquisition/renewal */ + uint16_t flags; /* only one flag so far: */ +#define BROADCAST_FLAG 0x8000 /* "I need broadcast replies" */ + uint32_t ciaddr; /* client IP (if client is in BOUND, RENEW or REBINDING state) */ + uint32_t yiaddr; /* 'your' (client) IP address */ + uint32_t siaddr; /* IP address of next server to use in bootstrap, + * returned in DHCPOFFER, DHCPACK by server */ + uint32_t giaddr; /* relay agent IP address */ + uint8_t chaddr[16];/* link-layer client hardware address (MAC) */ + uint8_t sname[64]; /* server host name (ASCIZ) */ + uint8_t file[128]; /* boot file name (ASCIZ) */ + uint32_t cookie; /* fixed first four option bytes (99,130,83,99 dec) */ + 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]; }; -#else -#include <syslog.h> -#endif -void start_log(const char *client_server); -void background(const char *pidfile); -void udhcp_logging(int level, const char *fmt, ...); +uint16_t udhcp_checksum(void *addr, int count) FAST_FUNC; + +void udhcp_init_header(struct dhcpMessage *packet, char type) FAST_FUNC; + +/*int udhcp_recv_raw_packet(struct dhcpMessage *payload, int fd); - in dhcpc.h */ +int udhcp_recv_kernel_packet(struct dhcpMessage *packet, int fd) FAST_FUNC; + +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) FAST_FUNC; + +int udhcp_send_kernel_packet(struct dhcpMessage *payload, + uint32_t source_ip, int source_port, + uint32_t dest_ip, int dest_port) FAST_FUNC; + +extern int minpkt; // zzz -extern int udhcp_signal_pipe[2]; -void udhcp_set_signal_pipe(int sig_add); +/**/ +void udhcp_run_script(struct dhcpMessage *packet, const char *name) FAST_FUNC; -#define LOG(level, str, args...) udhcp_logging(level, str, ## args) +// Still need to clean these up... -#ifdef CONFIG_FEATURE_UDHCP_DEBUG -# define DEBUG(level, str, args...) udhcp_logging(level, str, ## args) +/* 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 + +void udhcp_sp_setup(void) FAST_FUNC; +int udhcp_sp_fd_set(fd_set *rfds, int extra_fd) FAST_FUNC; +int udhcp_sp_read(const fd_set *rfds) FAST_FUNC; +int udhcp_read_interface(const char *interface, int *ifindex, uint32_t *addr, uint8_t *arp) FAST_FUNC; +int udhcp_raw_socket(int ifindex) FAST_FUNC; +int udhcp_listen_socket(/*uint32_t ip,*/ int port, const char *inf) FAST_FUNC; +/* Returns 1 if no reply received */ +int arpping(uint32_t test_ip, uint32_t from_ip, uint8_t *from_mac, const char *interface) FAST_FUNC; + +#if ENABLE_UDHCP_DEBUG +# define DEBUG(str, args...) bb_info_msg("### " str, ## args) #else -# define DEBUG(level, str, args...) do {;} while(0) +# define DEBUG(str, args...) do {;} while (0) +#endif + +POP_SAVED_FUNCTION_VISIBILITY + #endif |