dhcpc.c

Included Files

#include <nut/include/sys/thread.h>

#include <nut/include/sys/event.h>

#include <nut/include/sys/timer.h>

#include <nut/include/sys/confnet.h>

#include <nut/include/sys/confos.h>

#include <stdlib.h>

#include </usr/avr/include/string.h>

#include <nut/include/time.h>

#include <nut/include/arpa/inet.h>

#include <nut/include/netinet/in.h>

#include <nut/include/netdb.h>

#include <nut/include/net/route.h>

#include <nut/include/sys/socket.h>

#include <nut/include/pro/dhcp.h>

Preprocessor definitions

#define DHCP_SERVERPORT 67

#define DHCP_CLIENTPORT 68

#define MAX_DHCP_MSGSIZE 576

#define MIN_DHCP_MSGSIZE 300

#define MAX_DHCP_BUFSIZE 1728

#define MIN_DHCP_WAIT 4000

#define MAX_DHCP_WAIT 64000

#define MAX_DCHP_RETRIES 3

#define MAX_DCHP_RELEASE_RETRIES 0

#define DHCP_DEFAULT_LEASE 43200

#define MAX_DHCP_NAPTIME 4294967

#define NUT_THREAD_DHCPSTACK 512

#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

#define DHCPOPT_PAD 0

#define DHCPOPT_NETMASK 1

#define DHCPOPT_GATEWAY 3

#define DHCPOPT_DNS 6

#define DHCPOPT_HOSTNAME 12

#define DHCPOPT_DOMAIN 15

#define DHCPOPT_BROADCAST 28

#define DHCPOPT_REQESTIP 50

#define DHCPOPT_LEASETIME 51

#define DHCPOPT_MSGTYPE 53

#define DHCPOPT_SID 54

#define DHCPOPT_PARAMREQUEST 55

#define DHCPOPT_MAXMSGSIZE 57

#define DHCPOPT_RENEWALTIME 58

#define DHCPOPT_REBINDTIME 59

#define DHCPOPT_END 255

Typedef BOOTP

typedef struct bootp BOOTP

See:	Type struct bootp

Type struct bootp

struct bootp

`struct bootp`
`{`
`u_char bp_op;`
`u_char bp_htype;`
`u_char bp_hlen;`
`u_char bp_hops;`
`u_long bp_xid;`
`u_short bp_secs;`
`u_short bp_flags;`
`u_long bp_ciaddr;`
`u_long bp_yiaddr;`
`u_long bp_siaddr;`
`u_long bp_giaddr;`
`u_char bp_chaddr[16];`
`char bp_sname[64];`
`char bp_file[128];`
`u_char bp_options[312];`
`}`

Typedef DYNCFG

typedef struct dyn_cfg DYNCFG

See:	Type struct dyn_cfg

Type struct dyn_cfg

struct dyn_cfg

`struct dyn_cfg`
`{`
`u_char dyn_msgtyp;`
`u_long dyn_yiaddr;`
`u_long dyn_netmask;`
`u_long dyn_broadcast;`
`u_long dyn_gateway;`
`u_long dyn_pdns;`
`u_long dyn_sdns;`
`u_long dyn_sid;`
`u_long dyn_renewalTime;`
`u_long dyn_rebindTime;`
`u_long dyn_leaseTime;`
`u_char* dyn_hostname;`
`u_char* dyn_domain;`
`}`

Local Variables

dhcpConfig
static DYNCFG* dhcpConfig

Used in:	NutDhcpClient()
	NutDhcpIfConfig()

dhcpThread
static HANDLE dhcpThread

Used in:

DhcpKick()

dhcpState
static u_char dhcpState

Used in:	DhcpKick()
	NutDhcpClient()
	NutDhcpIfConfig()
	NutDhcpInform()
	NutDhcpIsConfigured()
	NutDhcpRelease()
	NutDhcpStatus()

dhcpError
static int dhcpError

Used in:	DhcpKick()
	DhcpRecvMessage()
	DhcpSendMessage()
	NutDhcpClient()
	NutDhcpError()
	NutDhcpIfConfig()
	NutDhcpInform()
	NutDhcpRelease()

dhcpWake
static HANDLE dhcpWake

Used in:	DhcpKick()
	NutDhcpClient()

dhcpDone
static HANDLE dhcpDone

Used in:	DhcpKick()
	NutDhcpClient()

dhcpApiTimeout
static u_long dhcpApiTimeout

Used in:	DhcpKick()
	NutDhcpClient()

dhcpApiStart
static u_long dhcpApiStart

Used in:	DhcpKick()
	NutDhcpClient()

Global Function NutDhcpClient()

void NutDhcpClient ( void* arg )

Prototyped in:	nut/pro/dhcpc.c
Calls:	CheckOffer()	nut/pro/dhcpc.c
	DhcpBroadcastDiscover()	nut/pro/dhcpc.c
	DhcpBroadcastRequest()	nut/pro/dhcpc.c
	DhcpRecvMessage()	nut/pro/dhcpc.c
	DhcpSendInform()	nut/pro/dhcpc.c
	DhcpSendRelease()	nut/pro/dhcpc.c
	DhcpSendRequest()	nut/pro/dhcpc.c
	NutEventBroadcast()	nut/os/event.c
	NutEventWait()	nut/os/event.c
	NutGetMillis()	nut/os/timer.c
	NutGetSeconds()	nut/os/timer.c
	ParseReply()	nut/pro/dhcpc.c
	ReleaseDynCfg()	nut/pro/dhcpc.c
	NutUdpCreateSocket(), NutUdpDestroySocket(), NutUdpSetSockOpt(), free(), malloc()
Used in:	DhcpKick()	nut/pro/dhcpc.c
References Variables:	dhcpApiStart	nut/pro/dhcpc.c
	dhcpApiTimeout	nut/pro/dhcpc.c
	dhcpConfig	nut/pro/dhcpc.c
	dhcpDone	nut/pro/dhcpc.c
	dhcpError	nut/pro/dhcpc.c
	dhcpState	nut/pro/dhcpc.c
	dhcpWake	nut/pro/dhcpc.c

Global Function NutDhcpError()

int NutDhcpError ( const char* name )

Prototyped in:	nut/include/pro/dhcp.h
References Variables:	dhcpError	nut/pro/dhcpc.c

Global Function NutDhcpIfConfig()

int NutDhcpIfConfig ( const char* name, u_char* mac, u_long timeout )

Prototyped in:	nut/include/pro/dhcp.h
Calls:	DhcpKick()	nut/pro/dhcpc.c
	NutDeviceLookup()	nut/os/devreg.c
	NutSleep()	nut/os/timer.c
	NutDnsConfig2(), NutNetIfConfig2(), NutNetIfSetup(), NutNetLoadConfig(), memcmp(), memcpy(), memset()
References Variables:	dhcpConfig	nut/pro/dhcpc.c
	dhcpError	nut/pro/dhcpc.c
	dhcpState	nut/pro/dhcpc.c

Global Function NutDhcpInform()

int NutDhcpInform ( const char* name, u_long timeout )

Prototyped in:	nut/include/pro/dhcp.h
Calls:	DhcpKick()	nut/pro/dhcpc.c
References Variables:	dhcpError	nut/pro/dhcpc.c
	dhcpState	nut/pro/dhcpc.c

Global Function NutDhcpIsConfigured()

int NutDhcpIsConfigured ( void )

Prototyped in:	nut/include/pro/dhcp.h
References Variables:	dhcpState	nut/pro/dhcpc.c

Global Function NutDhcpRelease()

int NutDhcpRelease ( const char* name, u_long timeout )

Prototyped in:	nut/include/pro/dhcp.h
Calls:	DhcpKick()	nut/pro/dhcpc.c
References Variables:	dhcpError	nut/pro/dhcpc.c
	dhcpState	nut/pro/dhcpc.c

Global Function NutDhcpStatus()

int NutDhcpStatus ( const char* name )

Prototyped in:	nut/include/pro/dhcp.h
References Variables:	dhcpState	nut/pro/dhcpc.c

Local Function CheckOffer()

static DYNCFG* CheckOffer ( DYNCFG* dyncfg, BOOTP* bp, size_t len )

Calls:	ParseReply()	nut/pro/dhcpc.c
	ReleaseDynCfg()	nut/pro/dhcpc.c
Called by:	NutDhcpClient()	nut/pro/dhcpc.c

Local Function DhcpAddByteOption()

static size_t DhcpAddByteOption ( u_char* op, u_char ot, u_char ov )

Called by:

DhcpPrepHeader()

nut/pro/dhcpc.c

Local Function DhcpAddOption()

static size_t DhcpAddOption ( u_char* op, u_char ot, void* ov, u_char len )

Calls:	memcpy()
Called by:	DhcpBroadcastDiscover()	nut/pro/dhcpc.c
	DhcpSendInform()	nut/pro/dhcpc.c
	DhcpSendRelease()	nut/pro/dhcpc.c
	DhcpSendRequest()	nut/pro/dhcpc.c

Local Function DhcpAddParmReqOption()

static size_t DhcpAddParmReqOption ( u_char* op )

Called by:	DhcpBroadcastDiscover()	nut/pro/dhcpc.c
	DhcpSendInform()	nut/pro/dhcpc.c
	DhcpSendRequest()	nut/pro/dhcpc.c

Local Function DhcpAddShortOption()

static size_t DhcpAddShortOption ( u_char* op, u_char ot, u_short ov )

Calls:	__byte_swap2(), memcpy()
Called by:	DhcpBroadcastDiscover()	nut/pro/dhcpc.c
	DhcpSendInform()	nut/pro/dhcpc.c

Local Function DhcpBroadcastDiscover()

static int DhcpBroadcastDiscover ( UDPSOCKET* sock, BOOTP* bp, u_long xid, u_long raddr, u_short secs )

Calls:	DhcpAddOption()	nut/pro/dhcpc.c
	DhcpAddParmReqOption()	nut/pro/dhcpc.c
	DhcpAddShortOption()	nut/pro/dhcpc.c
	DhcpPrepHeader()	nut/pro/dhcpc.c
	DhcpSendMessage()	nut/pro/dhcpc.c
	strlen()
Called by:	NutDhcpClient()	nut/pro/dhcpc.c

Local Function DhcpBroadcastRequest()

static int DhcpBroadcastRequest ( UDPSOCKET* sock, BOOTP* bp, u_long xid, u_long caddr, u_long raddr, u_long sid, u_short secs )

Calls:	DhcpSendRequest()	nut/pro/dhcpc.c
Called by:	NutDhcpClient()	nut/pro/dhcpc.c

Local Function DhcpKick()

static int DhcpKick ( const char* name, u_char state, u_long timeout )

Calls:	NutDeviceLookup()	nut/os/devreg.c
	NutEventPost()	nut/os/event.c
	NutEventWait()	nut/os/event.c
	NutGetMillis()	nut/os/timer.c
	NutThreadCreate()
Called by:	NutDhcpIfConfig()	nut/pro/dhcpc.c
	NutDhcpInform()	nut/pro/dhcpc.c
	NutDhcpRelease()	nut/pro/dhcpc.c
References Functions:	NutDhcpClient()	nut/pro/dhcpc.c
References Variables:	dhcpApiStart	nut/pro/dhcpc.c
	dhcpApiTimeout	nut/pro/dhcpc.c
	dhcpDone	nut/pro/dhcpc.c
	dhcpError	nut/pro/dhcpc.c
	dhcpState	nut/pro/dhcpc.c
	dhcpThread	nut/pro/dhcpc.c
	dhcpWake	nut/pro/dhcpc.c

Local Function DhcpPrepHeader()

static u_int DhcpPrepHeader ( BOOTP* bp, u_char msgtyp, u_long xid, u_long ciaddr, u_short secs )

Calls:	DhcpAddByteOption()	nut/pro/dhcpc.c
	__byte_swap2(), memcpy(), memset()
Called by:	DhcpBroadcastDiscover()	nut/pro/dhcpc.c
	DhcpSendInform()	nut/pro/dhcpc.c
	DhcpSendRelease()	nut/pro/dhcpc.c
	DhcpSendRequest()	nut/pro/dhcpc.c

Local Function DhcpRecvMessage()

static int DhcpRecvMessage ( UDPSOCKET* sock, u_long xid, BOOTP* bp, u_long tmo )

Calls:	NutGetMillis()	nut/os/timer.c
	NutUdpReceiveFrom()
Called by:	NutDhcpClient()	nut/pro/dhcpc.c
References Variables:	dhcpError	nut/pro/dhcpc.c

Local Function DhcpSendInform()

static int DhcpSendInform ( UDPSOCKET* sock, u_long daddr, BOOTP* bp, u_long xid, u_long caddr )

Calls:	DhcpAddOption()	nut/pro/dhcpc.c
	DhcpAddParmReqOption()	nut/pro/dhcpc.c
	DhcpAddShortOption()	nut/pro/dhcpc.c
	DhcpPrepHeader()	nut/pro/dhcpc.c
	DhcpSendMessage()	nut/pro/dhcpc.c
	strlen()
Called by:	NutDhcpClient()	nut/pro/dhcpc.c

Local Function DhcpSendMessage()

static int DhcpSendMessage ( UDPSOCKET* sock, u_long addr, BOOTP* bp, size_t len )

Calls:	NutUdpSendTo()
Called by:	DhcpBroadcastDiscover()	nut/pro/dhcpc.c
	DhcpSendInform()	nut/pro/dhcpc.c
	DhcpSendRelease()	nut/pro/dhcpc.c
	DhcpSendRequest()	nut/pro/dhcpc.c
References Variables:	dhcpError	nut/pro/dhcpc.c

Local Function DhcpSendRelease()

static int DhcpSendRelease ( UDPSOCKET* sock, u_long daddr, BOOTP* bp, u_long xid, u_long caddr, u_long sid )

Calls:	DhcpAddOption()	nut/pro/dhcpc.c
	DhcpPrepHeader()	nut/pro/dhcpc.c
	DhcpSendMessage()	nut/pro/dhcpc.c
Called by:	NutDhcpClient()	nut/pro/dhcpc.c

Local Function DhcpSendRequest()

static int DhcpSendRequest ( UDPSOCKET* sock, u_long daddr, BOOTP* bp, u_long xid, u_long caddr, u_long raddr, u_long sid, u_short secs )

Calls:	DhcpAddOption()	nut/pro/dhcpc.c
	DhcpAddParmReqOption()	nut/pro/dhcpc.c
	DhcpPrepHeader()	nut/pro/dhcpc.c
	DhcpSendMessage()	nut/pro/dhcpc.c
	strlen()
Called by:	DhcpBroadcastRequest()	nut/pro/dhcpc.c
	NutDhcpClient()	nut/pro/dhcpc.c

Local Function ParseReply()

static DYNCFG* ParseReply ( BOOTP* bp, int len )

Calls:	ReleaseDynCfg()	nut/pro/dhcpc.c
	copy_str()	nut/pro/dhcpc.c
	__byte_swap4(), malloc(), memcpy(), memset()
Called by:	CheckOffer()	nut/pro/dhcpc.c
	NutDhcpClient()	nut/pro/dhcpc.c

Local Function ReleaseDynCfg()

static void ReleaseDynCfg ( DYNCFG* dyncfg )

Calls:	free()
Called by:	CheckOffer()	nut/pro/dhcpc.c
	NutDhcpClient()	nut/pro/dhcpc.c
	ParseReply()	nut/pro/dhcpc.c

Local Function copy_str()

static void copy_str ( u_char** dst, void* src, int len )

Calls:	free(), malloc(), memcpy()
Called by:	ParseReply()	nut/pro/dhcpc.c