resolv.c

Included Files

#include <nut/include/cfg/os.h>

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

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

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

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

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

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

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

Typedef DNSCONFIG

typedef struct {...} DNSCONFIG

`struct`
`{`
`u_char* doc_hostname;`
`u_char* doc_domain;`
`u_long doc_ip1;`
`u_long doc_ip2;`
`}`

Typedef DNSHEADER

typedef struct {...} DNSHEADER

`struct`
`{`
`u_short doh_id;`
`u_short doh_flags;`
`u_short doh_quests;`
`u_short doh_answers;`
`u_short doh_authrr;`
`u_short doh_addrr;`
`}`

Typedef DNSQUESTION

typedef struct {...} DNSQUESTION

`struct`
`{`
`u_char* doq_name;`
`u_short doq_type;`
`u_short doq_class;`
`}`

Typedef DNSRESOURCE

typedef struct {...} DNSRESOURCE

`struct`
`{`
`u_char* dor_name;`
`u_short dor_type;`
`u_short dor_class;`
`u_long dor_ttl;`
`u_short dor_len;`
`u_char* dor_data;`
`}`

Local Variables

doc
static DNSCONFIG doc

Used in:	NutDnsConfig2()
	NutDnsGetResource()

Global Function NutDnsConfig()

void NutDnsConfig ( u_char* hostname, u_char* domain, u_long dnsip )

Calls:

NutDnsConfig2()

nut/pro/resolv.c

Global Function NutDnsConfig2()

void NutDnsConfig2 ( u_char* hostname, u_char* domain, u_long pdnsip, u_long sdnsip )

Calls:	NutHeapAlloc()	nut/os/heap.c
	NutHeapFree()	nut/os/heap.c
	strcpy(), strlen()
Called by:	NutDhcpIfConfig()	nut/pro/dhcpc.c
	NutDnsConfig()	nut/pro/resolv.c
References Variables:	doc	nut/pro/resolv.c

Global Function NutDnsGetHostByName()

u_long NutDnsGetHostByName ( const u_char* hostname )

Calls:

NutDnsGetResource()

nut/pro/resolv.c

Global Function NutDnsGetMxByDomain()

u_long NutDnsGetMxByDomain ( const u_char* hostname )

Calls:

NutDnsGetResource()

nut/pro/resolv.c

Global Function NutDnsGetResource()

u_long NutDnsGetResource ( const u_char* hostname, const u_short type )

Prototyped in:	nut/pro/resolv.c
Calls:	CreateDnsHeader()	nut/pro/resolv.c
	CreateDnsQuestion()	nut/pro/resolv.c
	CreateDnsResource()	nut/pro/resolv.c
	DecodeDnsHeader()	nut/pro/resolv.c
	DecodeDnsQuestion()	nut/pro/resolv.c
	DecodeDnsResource()	nut/pro/resolv.c
	EncodeDnsHeader()	nut/pro/resolv.c
	EncodeDnsQuestion()	nut/pro/resolv.c
	NutHeapAlloc()	nut/os/heap.c
	NutHeapFree()	nut/os/heap.c
	ReleaseDnsHeader()	nut/pro/resolv.c
	ReleaseDnsQuestion()	nut/pro/resolv.c
	ReleaseDnsResource()	nut/pro/resolv.c
	NutUdpCreateSocket(), NutUdpDestroySocket(), NutUdpReceiveFrom(), NutUdpSendTo()
Called by:	NutDnsGetHostByName()	nut/pro/resolv.c
	NutDnsGetMxByDomain()	nut/pro/resolv.c
References Variables:	doc	nut/pro/resolv.c

Local Function AddName()

static u_short AddName ( u_char* cp, const u_char* name )

Calls:	strlen()
Called by:	EncodeDnsQuestion()	nut/pro/resolv.c

Local Function AddShort()

static u_short AddShort ( u_char* cp, u_short val )

Called by:	EncodeDnsHeader()	nut/pro/resolv.c
	EncodeDnsQuestion()	nut/pro/resolv.c

Local Function CreateDnsHeader()

static DNSHEADER* CreateDnsHeader ( DNSHEADER* doh, u_short id )

Calls:	NutHeapAllocClear()	nut/os/heap.c
Called by:	NutDnsGetResource()	nut/pro/resolv.c

Local Function CreateDnsQuestion()

static DNSQUESTION* CreateDnsQuestion ( DNSQUESTION* doq, const u_char* name, u_short type )

Calls:	NutHeapAlloc()	nut/os/heap.c
	NutHeapAllocClear()	nut/os/heap.c
	NutHeapFree()	nut/os/heap.c
	strcpy(), strlen()
Called by:	NutDnsGetResource()	nut/pro/resolv.c

Local Function CreateDnsResource()

static DNSRESOURCE* CreateDnsResource ( DNSRESOURCE* dor )

Calls:	NutHeapAllocClear()	nut/os/heap.c
Called by:	NutDnsGetResource()	nut/pro/resolv.c

Local Function DecodeDnsHeader()

static u_short DecodeDnsHeader ( DNSHEADER* doh, u_char* buf )

Calls:	ScanShort()	nut/pro/resolv.c
Called by:	NutDnsGetResource()	nut/pro/resolv.c

Local Function DecodeDnsQuestion()

static u_short DecodeDnsQuestion ( DNSQUESTION* doq, u_char* buf )

Calls:	ScanName()	nut/pro/resolv.c
	ScanShort()	nut/pro/resolv.c
Called by:	NutDnsGetResource()	nut/pro/resolv.c

Local Function DecodeDnsResource()

static u_short DecodeDnsResource ( DNSRESOURCE* dor, u_char* buf )

Calls:	ScanBinary()	nut/pro/resolv.c
	ScanLong()	nut/pro/resolv.c
	ScanName()	nut/pro/resolv.c
	ScanShort()	nut/pro/resolv.c
Called by:	NutDnsGetResource()	nut/pro/resolv.c

Local Function EncodeDnsHeader()

static u_short EncodeDnsHeader ( u_char* buf, DNSHEADER* doh )

Calls:	AddShort()	nut/pro/resolv.c
Called by:	NutDnsGetResource()	nut/pro/resolv.c

Local Function EncodeDnsQuestion()

static u_short EncodeDnsQuestion ( u_char* buf, DNSQUESTION* doq )

Calls:	AddName()	nut/pro/resolv.c
	AddShort()	nut/pro/resolv.c
Called by:	NutDnsGetResource()	nut/pro/resolv.c

Local Function ReleaseDnsHeader()

static void ReleaseDnsHeader ( DNSHEADER* doh )

Calls:	NutHeapFree()	nut/os/heap.c
Called by:	NutDnsGetResource()	nut/pro/resolv.c

Local Function ReleaseDnsQuestion()

static void ReleaseDnsQuestion ( DNSQUESTION* doq )

Calls:	NutHeapFree()	nut/os/heap.c
Called by:	NutDnsGetResource()	nut/pro/resolv.c

Local Function ReleaseDnsResource()

static void ReleaseDnsResource ( DNSRESOURCE* dor )

Calls:	NutHeapFree()	nut/os/heap.c
Called by:	NutDnsGetResource()	nut/pro/resolv.c

Local Function ScanBinary()

static u_short ScanBinary ( u_char* cp, u_char** npp, u_short len )

Calls:	NutHeapAlloc()	nut/os/heap.c
	NutHeapFree()	nut/os/heap.c
	memcpy()
Called by:	DecodeDnsResource()	nut/pro/resolv.c

Local Function ScanLong()

static u_short ScanLong ( u_char* cp, u_long* val )

Called by:

DecodeDnsResource()

nut/pro/resolv.c

Local Function ScanName()

static u_short ScanName ( u_char* cp, u_char** npp )

Calls:	NutHeapAlloc()	nut/os/heap.c
	NutHeapFree()	nut/os/heap.c
	strlen()
Called by:	DecodeDnsQuestion()	nut/pro/resolv.c
	DecodeDnsResource()	nut/pro/resolv.c

Local Function ScanShort()

static u_short ScanShort ( u_char* cp, u_short* val )

Called by:	DecodeDnsHeader()	nut/pro/resolv.c
	DecodeDnsQuestion()	nut/pro/resolv.c
	DecodeDnsResource()	nut/pro/resolv.c