#include "coap_config.h"
#include "address.h"
#include "coap_debug.h"
#include "mem.h"
#include "coap_dtls.h"
#include "coap_keystore.h"
#include "utlist.h"
#include <inttypes.h>
#include <stdio.h>
#include <errno.h>
#include <gnutls/gnutls.h>
#include <gnutls/x509.h>
#include <unistd.h>

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Data Structures
struct	queue_t

struct	coap_dtls_session_t

struct	coap_dtls_context_t

Macros
#define	UNUSED

#define	COAP_COPY_ADDRESS(DST, SRC)

#define	ITEM_SIZE (sizeof(struct queue_t) + data_length)

#define	CONTEXT_SIZE (sizeof(struct coap_dtls_context_t))

Typedefs
typedef enum CertificateFormat_	CertificateFormat

typedef struct coap_dtls_context_t	coap_dtls_context_t

Enumerations
enum	CredentialType { CREDENTIAL_TYPE_NOT_SET, CREDENTIAL_TYPE_CLIENT_PSK, CREDENTIAL_TYPE_SERVER_PSK }

enum	CertificateFormat_ { CERTIFICATE_FORMAT_NONE, CERTIFICATE_FORMAT_ASN1, CERTIFICATE_FORMAT_PEM }

Functions
void	dtls_set_psk (struct coap_dtls_context_t ctx, const char identity, const uint8_t *key, int key_length)

int	coap_dtls_is_supported (void)
	Returns 1 if support for DTLS is enabled, or 0 otherwise. More...

void	coap_dtls_set_log_level (int level)
	Sets the log level to the specified value. More...

int	coap_dtls_get_log_level (void)
	Returns the current log level. More...

static int	push_data_item (struct coap_dtls_session_t session, coap_tid_t id, const unsigned char data, size_t data_length)

struct coap_dtls_context_t *	coap_dtls_new_context (struct coap_context_t *coap_context)
	Creates a new DTLS context for the given `coap_context`. More...

void	coap_dtls_free_context (struct coap_dtls_context_t *dtls_context)
	Releases the storage allocated for `dtls_context`. More...

static ssize_t	decrypt_callback (gnutls_transport_ptr_t context, void *receive_buffer, size_t receive_buffer_length)

static ssize_t	dtls_send_to_peer (gnutls_transport_ptr_t context, const void *send_buffer, size_t send_buffer_length)

static int	psk_client_callback (gnutls_session_t session, char *username, gnutls_datum_t key)

static int	psk_callback (gnutls_session_t session, const char username, gnutls_datum_t key)

struct coap_dtls_session_t *	coap_dtls_new_session (struct coap_dtls_context_t dtls_context, const coap_endpoint_t local_interface, const coap_address_t *remote)

void	coap_dtls_free_session (struct coap_dtls_context_t dtls_context, struct coap_dtls_session_t session)

static struct coap_dtls_session_t *	coap_dtls_find_session (coap_dtls_context_t dtls_context, const coap_endpoint_t local_interface, const coap_address_t *dst)

struct coap_dtls_session_t *	coap_dtls_get_session (struct coap_context_t coap_context, const coap_endpoint_t local_interface, const coap_address_t *dst)

int	coap_dtls_send (struct coap_context_t coap_context, struct coap_dtls_session_t session, const coap_pdu_t *pdu)

int	coap_dtls_handle_message (struct coap_context_t coap_context, const coap_endpoint_t local_interface, const coap_address_t dst, const unsigned char data, size_t data_len)

Macro Definition Documentation

◆ COAP_COPY_ADDRESS

#define COAP_COPY_ADDRESS	(	DST,
		SRC
	)

Value:

do {                             \
    (DST)->size = (SRC)->size;                                      \
    if ((SRC)->addr.sa.sa_family == AF_INET6) {                     \
      (DST)->addr.sin6.sin6_family = (SRC)->addr.sin6.sin6_family;  \
      (DST)->addr.sin6.sin6_addr = (SRC)->addr.sin6.sin6_addr;      \
      (DST)->addr.sin6.sin6_port = (SRC)->addr.sin6.sin6_port;      \
    } else {                                                        \
      (DST)->addr.st = (SRC)->addr.st;                              \
    }                                                               \
  } while (0);

Definition at line 89 of file coap_dtls_gnutls.c.

◆ CONTEXT_SIZE

#define CONTEXT_SIZE (sizeof(struct coap_dtls_context_t))

◆ ITEM_SIZE

#define ITEM_SIZE (sizeof(struct queue_t) + data_length)

◆ UNUSED

#define UNUSED

Definition at line 27 of file coap_dtls_gnutls.c.

Typedef Documentation

◆ CertificateFormat

typedef enum CertificateFormat_ CertificateFormat

◆ coap_dtls_context_t

typedef struct coap_dtls_context_t coap_dtls_context_t

Enumeration Type Documentation

◆ CertificateFormat_

enum CertificateFormat_

Enumerator
CERTIFICATE_FORMAT_NONE
CERTIFICATE_FORMAT_ASN1
CERTIFICATE_FORMAT_PEM

Definition at line 40 of file coap_dtls_gnutls.c.

◆ CredentialType

enum CredentialType

Enumerator
CREDENTIAL_TYPE_NOT_SET
CREDENTIAL_TYPE_CLIENT_PSK
CREDENTIAL_TYPE_SERVER_PSK

Definition at line 33 of file coap_dtls_gnutls.c.

Function Documentation

◆ coap_dtls_find_session()

static struct coap_dtls_session_t* coap_dtls_find_session	(	coap_dtls_context_t *	dtls_context,
		const coap_endpoint_t *	local_interface,
		const coap_address_t *	dst
	)

static

Definition at line 484 of file coap_dtls_gnutls.c.

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◆ coap_dtls_free_context()

void coap_dtls_free_context ( struct coap_dtls_context_t * dtls_context )

Releases the storage allocated for dtls_context.

Definition at line 195 of file coap_dtls_gnutls.c.

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◆ coap_dtls_free_session()

void coap_dtls_free_session	(	struct coap_dtls_context_t *	dtls_context,
		struct coap_dtls_session_t *	session
	)

Definition at line 467 of file coap_dtls_gnutls.c.

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◆ coap_dtls_get_session()

struct coap_dtls_session_t* coap_dtls_get_session	(	struct coap_context_t *	coap_context,
		const coap_endpoint_t *	local_interface,
		const coap_address_t *	dst
	)

Definition at line 498 of file coap_dtls_gnutls.c.

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◆ coap_dtls_handle_message()

int coap_dtls_handle_message	(	struct coap_context_t *	coap_context,
		const coap_endpoint_t *	local_interface,
		const coap_address_t *	dst,
		const unsigned char *	data,
		size_t	data_len
	)

Definition at line 564 of file coap_dtls_gnutls.c.

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◆ coap_dtls_new_session()

struct coap_dtls_session_t* coap_dtls_new_session	(	struct coap_dtls_context_t *	dtls_context,
		const coap_endpoint_t *	local_interface,
		const coap_address_t *	remote
	)

Definition at line 363 of file coap_dtls_gnutls.c.

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◆ coap_dtls_send()

int coap_dtls_send	(	struct coap_context_t *	coap_context,
		struct coap_dtls_session_t *	session,
		const coap_pdu_t *	pdu
	)

Definition at line 520 of file coap_dtls_gnutls.c.

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◆ decrypt_callback()

static ssize_t decrypt_callback	(	gnutls_transport_ptr_t	context,
		void *	receive_buffer,
		size_t	receive_buffer_length
	)

static

Definition at line 232 of file coap_dtls_gnutls.c.

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◆ dtls_send_to_peer()

static ssize_t dtls_send_to_peer	(	gnutls_transport_ptr_t	context,
		const void *	send_buffer,
		size_t	send_buffer_length
	)

static

Definition at line 283 of file coap_dtls_gnutls.c.

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◆ dtls_set_psk()

void dtls_set_psk	(	struct coap_dtls_context_t *	ctx,
		const char *	identity,
		const uint8_t *	key,
		int	key_length
	)

Definition at line 111 of file coap_dtls_gnutls.c.

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◆ psk_callback()

static int psk_callback	(	gnutls_session_t	session,
		const char *	username,
		gnutls_datum_t *	key
	)

static

Definition at line 318 of file coap_dtls_gnutls.c.

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◆ psk_client_callback()

static int psk_client_callback	(	gnutls_session_t	session,
		char **	username,
		gnutls_datum_t *	key
	)

static

Definition at line 310 of file coap_dtls_gnutls.c.

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◆ push_data_item()

static int push_data_item	(	struct coap_dtls_session_t *	session,
		coap_tid_t	id,
		const unsigned char *	data,
		size_t	data_length
	)

static

Definition at line 140 of file coap_dtls_gnutls.c.

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Data Structures

Macros

Typedefs

Enumerations

Functions

Macro Definition Documentation

◆ COAP_COPY_ADDRESS

◆ CONTEXT_SIZE

◆ ITEM_SIZE

◆ UNUSED

Typedef Documentation

◆ CertificateFormat

◆ coap_dtls_context_t

Enumeration Type Documentation

◆ CertificateFormat_

◆ CredentialType

Function Documentation

◆ coap_dtls_find_session()

◆ coap_dtls_free_context()

◆ coap_dtls_free_session()

◆ coap_dtls_get_session()

◆ coap_dtls_handle_message()

◆ coap_dtls_new_session()

◆ coap_dtls_send()

◆ decrypt_callback()

◆ dtls_send_to_peer()

◆ dtls_set_psk()

◆ psk_callback()

◆ psk_client_callback()

◆ push_data_item()