resolv.c

Included Files

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

#include <stdlib.h>

#include <string.h>

#include <nut/include/memdebug.h>

#include <nut/include/netdb.h>

Typedef DNSHEADER

typedef struct {...} DNSHEADER

`struct`
`{`
`uint16_t doh_id;`
`uint16_t doh_flags;`
`uint16_t doh_quests;`
`uint16_t doh_answers;`
`uint16_t doh_authrr;`
`uint16_t doh_addrr;`
`}`

Typedef DNSQUESTION

typedef struct {...} DNSQUESTION

`struct`
`{`
`uint8_t* doq_name;`
`uint16_t doq_type;`
`uint16_t doq_class;`
`}`

Typedef DNSRESOURCE

typedef struct {...} DNSRESOURCE

`struct`
`{`
`uint8_t* dor_name;`
`uint16_t dor_type;`
`uint16_t dor_class;`
`uint32_t dor_ttl;`
`uint16_t dor_len;`
`uint8_t* dor_data;`
`}`

External Variables

confdns
extern DNSCONFIG confdns

Defined in:

nut/pro/confdns.c

Global Function NutDnsConfig()

void NutDnsConfig ( const uint8_t* hostname, const uint8_t* domain, uint32_t dnsip )

Prototyped in:	nut/include/netdb.h
Calls:	NutDnsConfig2()	nut/pro/confdns.c

Global Function NutDnsGetConfig2()

void NutDnsGetConfig2 ( char** hostname, char** domain, uint32_t* pdnsip, uint32_t* sdnsip )

Prototyped in:	nut/include/netdb.h
References Variables:	confdns	nut/pro/confdns.c

Global Function NutDnsGetHostByName()

uint32_t NutDnsGetHostByName ( const uint8_t* hostname )

Prototyped in:	nut/include/netdb.h
Calls:	NutDnsGetResource()	nut/pro/resolv.c
Called by:	NutAppMain()	nut/app/inetq/inetq.c
	QueryDateAndTime()	nut/app/pppc/pppc.c
	tls_client()	nut/app/tls_client/tls_client.c

Global Function NutDnsGetHostsByName()

uint8_t NutDnsGetHostsByName ( const uint8_t* hostname, uint32_t* ip_all )

Prototyped in:	nut/include/netdb.h
Calls:	NutDnsGetResourceAll()	nut/pro/resolv.c

Global Function NutDnsGetMxByDomain()

uint32_t NutDnsGetMxByDomain ( const uint8_t* hostname )

Prototyped in:	nut/include/netdb.h
Calls:	NutDnsGetResource()	nut/pro/resolv.c

Global Function NutDnsGetResource()

uint32_t NutDnsGetResource ( const uint8_t* hostname, const uint16_t 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
	NutUdpCreateSocket()	nut/net/udpsock.c
	NutUdpDestroySocket()	nut/net/udpsock.c
	NutUdpReceiveFrom()	nut/net/udpsock.c
	NutUdpSendTo()	nut/net/udpsock.c
	ReleaseDnsHeader()	nut/pro/resolv.c
	ReleaseDnsQuestion()	nut/pro/resolv.c
	ReleaseDnsResource()	nut/pro/resolv.c
	free()	nut/crt/malloc.c
	malloc()	nut/crt/malloc.c
Called by:	NutDnsGetHostByName()	nut/pro/resolv.c
	NutDnsGetMxByDomain()	nut/pro/resolv.c
References Variables:	confdns	nut/pro/confdns.c

Global Function NutDnsGetResourceAll()

uint8_t NutDnsGetResourceAll ( const uint8_t* hostname, const uint16_t type, uint32_t* ip_all )

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
	NutHeapRootAlloc()	nut/os/heap.c
	NutHeapRootFree()	nut/os/heap.c
	NutUdpCreateSocket()	nut/net/udpsock.c
	NutUdpDestroySocket()	nut/net/udpsock.c
	NutUdpReceiveFrom()	nut/net/udpsock.c
	NutUdpSendTo()	nut/net/udpsock.c
	ReleaseDnsHeader()	nut/pro/resolv.c
	ReleaseDnsQuestion()	nut/pro/resolv.c
	ReleaseDnsResource()	nut/pro/resolv.c
Called by:	NutDnsGetHostsByName()	nut/pro/resolv.c
References Variables:	confdns	nut/pro/confdns.c

Local Function AddName()

static uint16_t AddName ( uint8_t* cp, const uint8_t* name )

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

Local Function AddShort()

static uint16_t AddShort ( uint8_t* cp, uint16_t val )

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

Local Function CreateDnsHeader()

static DNSHEADER* CreateDnsHeader ( DNSHEADER* doh, uint16_t id )

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

Local Function CreateDnsQuestion()

static DNSQUESTION* CreateDnsQuestion ( DNSQUESTION* doq, const uint8_t* name, uint16_t type )

Calls:	free()	nut/crt/malloc.c
	strdup()	nut/crt/strdup.c
	calloc()
Called by:	NutDnsGetResource()	nut/pro/resolv.c
	NutDnsGetResourceAll()	nut/pro/resolv.c

Local Function CreateDnsResource()

static DNSRESOURCE* CreateDnsResource ( DNSRESOURCE* dor )

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

Local Function DecodeDnsHeader()

static uint16_t DecodeDnsHeader ( DNSHEADER* doh, uint8_t* buf )

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

Local Function DecodeDnsQuestion()

static uint16_t DecodeDnsQuestion ( DNSQUESTION* doq, uint8_t* buf )

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

Local Function DecodeDnsResource()

static uint16_t DecodeDnsResource ( DNSRESOURCE* dor, uint8_t* 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
	NutDnsGetResourceAll()	nut/pro/resolv.c

Local Function EncodeDnsHeader()

static uint16_t EncodeDnsHeader ( uint8_t* buf, DNSHEADER* doh )

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

Local Function EncodeDnsQuestion()

static uint16_t EncodeDnsQuestion ( uint8_t* buf, DNSQUESTION* doq )

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

Local Function ReleaseDnsHeader()

static void ReleaseDnsHeader ( DNSHEADER* doh )

Calls:	free()	nut/crt/malloc.c
Called by:	NutDnsGetResource()	nut/pro/resolv.c
	NutDnsGetResourceAll()	nut/pro/resolv.c

Local Function ReleaseDnsQuestion()

static void ReleaseDnsQuestion ( DNSQUESTION* doq )

Calls:	free()	nut/crt/malloc.c
Called by:	NutDnsGetResource()	nut/pro/resolv.c
	NutDnsGetResourceAll()	nut/pro/resolv.c

Local Function ReleaseDnsResource()

static void ReleaseDnsResource ( DNSRESOURCE* dor )

Calls:	free()	nut/crt/malloc.c
Called by:	NutDnsGetResource()	nut/pro/resolv.c
	NutDnsGetResourceAll()	nut/pro/resolv.c

Local Function ScanBinary()

static uint16_t ScanBinary ( uint8_t* cp, uint8_t** npp, uint16_t len )

Calls:	free()	nut/crt/malloc.c
	malloc()	nut/crt/malloc.c
	memcpy()	nut/c/string/memcpy.c
Called by:	DecodeDnsResource()	nut/pro/resolv.c

Local Function ScanLong()

static uint16_t ScanLong ( uint8_t* cp, uint32_t* val )

Called by:

DecodeDnsResource()

nut/pro/resolv.c

Local Function ScanName()

static uint16_t ScanName ( uint8_t* cp, uint8_t** npp )

Calls:	free()	nut/crt/malloc.c
	malloc()	nut/crt/malloc.c
	strlen()	nut/c/string/strlen.c
Called by:	DecodeDnsQuestion()	nut/pro/resolv.c
	DecodeDnsResource()	nut/pro/resolv.c

Local Function ScanShort()

static uint16_t ScanShort ( uint8_t* cp, uint16_t* val )

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