switch_stun.c File Reference

#include <switch.h>
#include <switch_stun.h>
#include <openssl/sha.h>
#include <openssl/hmac.h>

Include dependency graph for switch_stun.c:

Go to the source code of this file.

Data Structures
struct	value_mapping

Functions
static void	v6_xor (uint8_t *addr, const uint8_t *transaction_id)
void	switch_stun_random_string (char *buf, uint16_t len, char *set)
	Writes random characters into a buffer. More...
switch_stun_packet_t *	switch_stun_packet_parse (uint8_t *buf, uint32_t len)
	Prepare a raw packet for parsing. More...
const char *	switch_stun_value_to_name (int32_t type, uint32_t value)
	Obtain a printable string form of a given value. More...
uint8_t	switch_stun_packet_attribute_get_mapped_address (switch_stun_packet_attribute_t *attribute, char *ipstr, switch_size_t iplen, uint16_t *port)
	Extract a mapped address (IP:PORT) from a packet attribute. More...
uint8_t	switch_stun_packet_attribute_get_xor_mapped_address (switch_stun_packet_attribute_t *attribute, switch_stun_packet_header_t *header, char *ipstr, switch_size_t iplen, uint16_t *port)
char *	switch_stun_packet_attribute_get_username (switch_stun_packet_attribute_t *attribute, char *username, uint16_t len)
	Extract a username from a packet attribute. More...
switch_stun_packet_t *	switch_stun_packet_build_header (switch_stun_message_t type, char *id, uint8_t *buf)
	Prepare a new outbound packet of a certian type and id. More...
uint8_t	switch_stun_packet_attribute_add_binded_address (switch_stun_packet_t *packet, char *ipstr, uint16_t port, int family)
	Add a binded address packet attribute. More...
uint8_t	switch_stun_packet_attribute_add_xor_binded_address (switch_stun_packet_t *packet, char *ipstr, uint16_t port, int family)
uint8_t	switch_stun_packet_attribute_add_priority (switch_stun_packet_t *packet, uint32_t priority)
uint8_t	switch_stun_packet_attribute_add_integrity (switch_stun_packet_t *packet, const char *pass)
uint8_t	switch_stun_packet_attribute_add_fingerprint (switch_stun_packet_t *packet)
uint8_t	switch_stun_packet_attribute_add_use_candidate (switch_stun_packet_t *packet)
uint8_t	switch_stun_packet_attribute_add_controlling (switch_stun_packet_t *packet)
uint8_t	switch_stun_packet_attribute_add_controlled (switch_stun_packet_t *packet)
uint8_t	switch_stun_packet_attribute_add_username (switch_stun_packet_t *packet, char *username, uint16_t ulen)
	Add a username packet attribute. More...
uint8_t	switch_stun_packet_attribute_add_software (switch_stun_packet_t *packet, char *software, uint16_t ulen)
uint8_t	switch_stun_packet_attribute_add_password (switch_stun_packet_t *packet, char *password, uint16_t ulen)
char *	switch_stun_host_lookup (const char *host, switch_memory_pool_t *pool)
switch_status_t	switch_stun_lookup (char **ip, switch_port_t *port, char *stunip, switch_port_t stunport, char **err, switch_memory_pool_t *pool)
	Perform a stun lookup. More...
switch_status_t	switch_stun_ip_lookup (char **external_ip, const char *sourceip, switch_memory_pool_t *external_pool)
	Perform a stun ip lookup. More...
uint32_t	switch_crc32_8bytes (const void *data, size_t length)

Variables
static const struct value_mapping	PACKET_TYPES []
static const struct value_mapping	ATTR_TYPES []
static const struct value_mapping	ERROR_TYPES []
const uint32_t	crc32Lookup [8][256]
	look-up table, already defined in line 18 More...

Function Documentation

v6_xor()

static void v6_xor ( uint8_t *  addr, const uint8_t *  transaction_id  )

static

Definition at line 110 of file switch_stun.c.

Referenced by switch_stun_packet_attribute_add_xor_binded_address(), and switch_stun_packet_attribute_get_xor_mapped_address().

{
        int i;

        addr[0] ^= 0x21;
        addr[1] ^= 0x12;
        addr[2] ^= 0xa4;
        addr[3] ^= 0x42;

        for (i = 0; i < 12; i++) {
                addr[i + 4] ^= transaction_id[i];
        }
}

Variable Documentation

ATTR_TYPES

const struct value_mapping ATTR_TYPES[]

static

Definition at line 61 of file switch_stun.c.

Referenced by switch_stun_value_to_name().

crc32Lookup

const uint32_t crc32Lookup[8][256]

look-up table, already defined in line 18

Definition at line 937 of file switch_stun.c.

Referenced by switch_crc32_8bytes().

ERROR_TYPES

const struct value_mapping ERROR_TYPES[]

static

Initial value:

= {
        {SWITCH_STUN_ERROR_BAD_REQUEST, "BAD_REQUEST"},
        {SWITCH_STUN_ERROR_UNAUTHORIZED, "UNAUTHORIZED"},
        {SWITCH_STUN_ERROR_UNKNOWN_ATTRIBUTE, "UNKNOWN_ATTRIBUTE"},
        {SWITCH_STUN_ERROR_STALE_CREDENTIALS, "STALE_CREDENTIALS"},
        {SWITCH_STUN_ERROR_INTEGRITY_CHECK_FAILURE, "INTEGRITY_CHECK_FAILURE"},
        {SWITCH_STUN_ERROR_MISSING_USERNAME, "MISSING_USERNAME"},
        {SWITCH_STUN_ERROR_USE_TLS, "USE_TLS"},
        {SWITCH_STUN_ERROR_SERVER_ERROR, "SERVER_ERROR"},
        {SWITCH_STUN_ERROR_GLOBAL_FAILURE, "GLOBAL_FAILURE"},
        {0, 0}
}

Definition at line 97 of file switch_stun.c.

Referenced by switch_stun_value_to_name().

PACKET_TYPES

const struct value_mapping PACKET_TYPES[]

static

Initial value:

= {
        {SWITCH_STUN_BINDING_REQUEST, "BINDING_REQUEST"},
        {SWITCH_STUN_BINDING_RESPONSE, "BINDING_RESPONSE"},
        {SWITCH_STUN_BINDING_ERROR_RESPONSE, "BINDING_ERROR_RESPONSE"},
        {SWITCH_STUN_SHARED_SECRET_REQUEST, "SHARED_SECRET_REQUEST"},
        {SWITCH_STUN_SHARED_SECRET_RESPONSE, "SHARED_SECRET_RESPONSE"},
        {SWITCH_STUN_SHARED_SECRET_ERROR_RESPONSE, "SHARED_SECRET_ERROR_RESPONSE"},
        {SWITCH_STUN_ALLOCATE_REQUEST, "ALLOCATE_REQUEST"},
        {SWITCH_STUN_ALLOCATE_RESPONSE, "ALLOCATE_RESPONSE"},
        {SWITCH_STUN_ALLOCATE_ERROR_RESPONSE, "ALLOCATE_ERROR_RESPONSE"},
        {SWITCH_STUN_SEND_REQUEST, "SEND_REQUEST"},
        {SWITCH_STUN_SEND_RESPONSE, "SEND_RESPONSE"},
        {SWITCH_STUN_SEND_ERROR_RESPONSE, "SEND_ERROR_RESPONSE"},
        {SWITCH_STUN_DATA_INDICATION, "DATA_INDICATION"},
        {0, 0}
}

Definition at line 44 of file switch_stun.c.

Referenced by switch_stun_value_to_name().