freewtp/lib/element_sessionid.c
2016-08-23 08:55:15 +02:00

101 lines
2.8 KiB
C

#include "capwap.h"
#include "element.h"
/********************************************************************
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Session ID |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Session ID |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Session ID |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Session ID |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Type: 35 for Session ID
Length: 16
********************************************************************/
/* */
void capwap_sessionid_generate(struct capwap_sessionid_element* session) {
int i;
ASSERT(session != NULL);
for (i = 0; i < 16; i++) {
session->id[i] = (uint8_t)capwap_get_rand(256);
}
}
/* */
void capwap_sessionid_printf(struct capwap_sessionid_element* session, char* string) {
int i;
char* pos = string;
ASSERT(session != NULL);
ASSERT(string != NULL);
for (i = 0; i < 16; i++) {
sprintf(pos, "%02x", session->id[i]);
pos += 2;
}
*pos = 0;
}
/* */
static void capwap_sessionid_element_create(void* data, capwap_message_elements_handle handle, struct capwap_write_message_elements_ops* func) {
struct capwap_sessionid_element* element = (struct capwap_sessionid_element*)data;
ASSERT(data != NULL);
func->write_block(handle, element->id, 16);
}
/* */
static void* capwap_sessionid_element_parsing(capwap_message_elements_handle handle, struct capwap_read_message_elements_ops* func) {
struct capwap_sessionid_element* data;
ASSERT(handle != NULL);
ASSERT(func != NULL);
if (func->read_ready(handle) != 16) {
log_printf(LOG_DEBUG, "Invalid Session ID element: underbuffer");
return NULL;
}
/* Retrieve data */
data = (struct capwap_sessionid_element*)capwap_alloc(sizeof(struct capwap_sessionid_element));
func->read_block(handle, data->id, 16);
return data;
}
/* */
static void* capwap_sessionid_element_clone(void* data) {
ASSERT(data != NULL);
return capwap_clone(data, sizeof(struct capwap_sessionid_element));
}
/* */
static void capwap_sessionid_element_free(void* data) {
ASSERT(data != NULL);
capwap_free(data);
}
/* */
const struct capwap_message_elements_ops capwap_element_sessionid_ops = {
.category = CAPWAP_MESSAGE_ELEMENT_SINGLE,
.create = capwap_sessionid_element_create,
.parse = capwap_sessionid_element_parsing,
.clone = capwap_sessionid_element_clone,
.free = capwap_sessionid_element_free
};