Add dhcpcd-3 re-write

1 files changed, 185 insertions, 0 deletions

diff --git a/dhcp.h b/dhcp.h
new file mode 100644
index 00000000..93af9cfc
--- /dev/null
+++ b/dhcp.h
@@ -0,0 +1,185 @@
+/*
+ * dhcpcd - DHCP client daemon -
+ * Copyright (C) 2005 - 2006 Roy Marples <uberlord@gentoo.org>
+ * 
+ * dhcpcd is an RFC2131 compliant DHCP client daemon.
+ *
+ * This 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.
+ */
+
+#ifndef DHCP_H
+#define DHCP_H
+
+#include <sys/types.h>
+#include <netinet/in_systm.h>
+#include <netinet/in.h>
+#include <netinet/ip.h>
+#include <netinet/udp.h>
+
+#include "dhcpcd.h"
+#include "interface.h"
+
+/* UDP port numbers for DHCP */
+#define DHCP_SERVER_PORT 67
+#define DHCP_CLIENT_PORT 68
+
+#define MAGIC_COOKIE 0x63825363
+
+/* DHCP message OP code */
+#define DHCP_BOOTREQUEST	1
+#define DHCP_BOOTREPLY		2
+
+/* DHCP message type */
+#define	DHCP_DISCOVER		1
+#define DHCP_OFFER		2
+#define	DHCP_REQUEST		3
+#define	DHCP_DECLINE		4
+#define	DHCP_ACK		5
+#define DHCP_NAK		6
+#define	DHCP_RELEASE		7
+#define DHCP_INFORM		8
+
+/* DHCP options */
+enum DHCP_OPTIONS
+{
+  DHCP_PAD				=	0,
+  DHCP_NETMASK				=	1,
+  DHCP_TIMEROFFSET			=	2,
+  DHCP_ROUTERS				=	3,
+  DHCP_TIMESERVER			=	4,
+  DHCP_NAMESERVER			=	5,
+  DHCP_DNSSERVER			=	6,
+  DHCP_LOGSERVER			=	7,
+  DHCP_COOKIESERVER			=	8,
+  DHCP_HOSTNAME				=	12,
+  DHCP_DNSDOMAIN			=	15,
+  DHCP_ROOTPATH				=	17,
+  DHCP_DEFAULTIPTTL			=	23,
+  DHCP_MTU				=	26,
+  DHCP_BROADCAST			=	28,
+  DHCP_MASKDISCOVERY			=	29,
+  DHCP_ROUTERDISCOVERY			=	31,
+  DHCP_STATICROUTE			=	33,
+  DHCP_NISDOMAIN			=	40,
+  DHCP_NISSERVER			=	41,
+  DHCP_NTPSERVER			=	42,
+  DHCP_ADDRESS				=	50,
+  DHCP_LEASETIME			=	51,
+  DHCP_MESSAGETYPE			=	53,
+  DHCP_SERVERIDENTIFIER			=	54,
+  DHCP_PARAMETERREQUESTLIST		=	55,
+  DHCP_MESSAGE				=	56,
+  DHCP_MAXMESSAGESIZE			=	57,
+  DHCP_RENEWALTIME			=	58,
+  DHCP_REBINDTIME			=	59,
+  DHCP_CLASSID				=	60,
+  DHCP_CLIENTID				=	61,
+  DHCP_USERCLASS			=	77,  /* RFC 3004 */
+  DHCP_FQDN				=	81,
+  DHCP_DNSSEARCH			=       119, /* RFC 3397 */
+  DHCP_CSR				=	121, /* RFC 3442 */
+  DHCP_END				=	255
+};
+
+/* SetFQDNHostName values - lsnybble used in flags
+ * byte (see buildmsg.c), hsnybble to create order
+ * and to allow 0x00 to mean disable
+ */
+enum FQQN {
+  FQDN_DISABLE				=	0x00,
+  FQDN_NONE				=	0x18,
+  FQDN_PTR				=	0x20,
+  FQDN_BOTH				=	0x31
+};
+
+typedef struct fqdn_t
+{
+  uint8_t flags;
+  uint8_t r1;
+  uint8_t r2;
+  char *name;
+} fqdn_t;
+
+typedef struct dhcp_t
+{
+  char version[11];
+
+  struct in_addr serveraddress;
+  char serverhw[IF_NAMESIZE];
+  char servername[64];
+
+  char classid[CLASS_ID_MAX_LEN];
+  char clientid[CLIENT_ID_MAX_LEN];
+  
+  struct in_addr address;
+  struct in_addr netmask;
+  struct in_addr broadcast;
+  unsigned short mtu;
+
+  unsigned leasetime;
+  unsigned renewaltime;
+  unsigned rebindtime;
+  
+  route_t *routes;
+
+  char *hostname;
+  fqdn_t *fqdn;
+ 
+  address_t *dnsservers;
+  char *dnsdomain;
+  char *dnssearch;
+  
+  address_t *ntpservers;
+
+  address_t *nisservers;
+  char *nisdomain;
+
+  char *message;
+  char *rootpath;
+} dhcp_t;
+
+typedef struct dhcpmessage_t
+{
+  char op;		/* message type */
+  char hwtype;		/* hardware address type */
+  char hwlen;		/* hardware address length */
+  char hwopcount;	/* should be zero in client's message */
+  int32_t xid;		/* transaction id */
+  int16_t secs;		/* elapsed time in sec. from trying to boot */
+  int16_t flags;
+  int32_t ciaddr;		/* (previously allocated) client IP address */
+  int32_t yiaddr;		/* 'your' client IP address */
+  int32_t siaddr;		/* should be zero in client's messages */
+  int32_t giaddr;		/* should be zero in client's messages */
+  unsigned char hwaddr[16];	/* client's hardware address */
+  char servername[64];	/* server host name, null terminated string */
+  char bootfile[128];	/* boot file name, null terminated string */
+  uint32_t cookie;
+  unsigned char options[308];	/* message options - cookie */
+} dhcpmessage_t;
+
+struct udp_dhcp_packet
+{
+  struct ip ip;
+  struct udphdr udp;
+  dhcpmessage_t dhcp;
+};
+
+size_t send_message (interface_t *iface, dhcp_t *dhcp,
+		     unsigned long xid, char type, options_t *options);
+void free_dhcp (dhcp_t *dhcp);
+int parse_dhcpmessage (dhcp_t *dhcp, dhcpmessage_t *message);
+
+#endif