X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=networking%2Fudhcp%2Fcommon.h;h=d44bca4e6e2bc14087f525e623cb5e59b4ba843e;hb=fcc6347976ded376c9effe3b9fb216b00b2140cb;hp=e474f5e970fbf2f7c9d7c38d667a4daa9bfd2538;hpb=2f9c30a2d567ba7bdb6351e0167eb0b59735b898;p=oweals%2Fbusybox.git

diff --git a/networking/udhcp/common.h b/networking/udhcp/common.h
index e474f5e97..d44bca4e6 100644
--- a/networking/udhcp/common.h
+++ b/networking/udhcp/common.h
@@ -1,58 +1,101 @@
+/* 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
  *
- * 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 _COMMON_H
 #define _COMMON_H
 
-#include "version.h"
-#include "libbb_udhcp.h"
+#include "libbb.h"
+
+#define DEFAULT_SCRIPT   CONFIG_DHCPC_DEFAULT_SCRIPT
+
+extern const uint8_t MAC_BCAST_ADDR[6]; /* six all-ones */
+
+/*** packet.h ***/
 
+#include <netinet/udp.h>
+#include <netinet/ip.h>
 
-#ifndef UDHCP_SYSLOG
-enum syslog_levels {
-	LOG_EMERG = 0,
-	LOG_ALERT,
-	LOG_CRIT,
-	LOG_WARNING,
-	LOG_ERR,
-	LOG_INFO,
-	LOG_DEBUG
+#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];
+} ATTRIBUTE_PACKED;
+
+struct udp_dhcp_packet {
+	struct iphdr ip;
+	struct udphdr udp;
+	struct dhcpMessage data;
+} ATTRIBUTE_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
 
-#define background udhcp_background
-#define start_log_and_pid udhcp_start_log_and_pid
+uint16_t udhcp_checksum(void *addr, int count);
+
+void udhcp_init_header(struct dhcpMessage *packet, char type);
+
+int udhcp_recv_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
 
-long uptime(void);
-void background(const char *pidfile);
-void start_log_and_pid(const char *client_server, const char *pidfile);
-void udhcp_logging(int level, const char *fmt, ...);
-                                                            
-#define LOG(level, str, args...) udhcp_logging(level, str, ## args)
+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);
 
-#ifdef UDHCP_DEBUG
-# define DEBUG(level, str, args...) LOG(level, str, ## args)
+#if ENABLE_FEATURE_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
 
 #endif