2013-05-01 14:52:55 +02:00
|
|
|
#include "capwap.h"
|
|
|
|
#include "capwap_array.h"
|
|
|
|
#include "capwap_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
|
|
|
|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
|
|
| Max Radios | Radios in use | Num Encrypt |Encryp Sub-Elmt|
|
|
|
|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
|
|
| Encryption Sub-Element | Descriptor Sub-Element...
|
|
|
|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
|
|
|
|
|
|
0 1 2
|
|
|
|
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3
|
|
|
|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
|
|
|Resvd| WBID | Encryption Capabilities |
|
|
|
|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
|
|
|
|
|
|
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
|
|
|
|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
|
|
| Descriptor Vendor Identifier |
|
|
|
|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
|
|
| Descriptor Type | Descriptor Length |
|
|
|
|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
|
|
| Descriptor Data...
|
|
|
|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
|
|
|
|
|
|
Type: 39 for WTP Descriptor
|
2013-05-27 21:33:23 +02:00
|
|
|
|
2013-05-01 14:52:55 +02:00
|
|
|
Length: >= 33
|
|
|
|
|
|
|
|
********************************************************************/
|
|
|
|
|
|
|
|
/* */
|
2013-05-27 21:33:23 +02:00
|
|
|
static void capwap_wtpdescriptor_element_create(void* data, capwap_message_elements_handle handle, struct capwap_write_message_elements_ops* func) {
|
|
|
|
int i;
|
|
|
|
struct capwap_wtpdescriptor_element* element = (struct capwap_wtpdescriptor_element*)data;
|
|
|
|
|
2013-05-01 14:52:55 +02:00
|
|
|
ASSERT(data != NULL);
|
|
|
|
|
2013-05-27 21:33:23 +02:00
|
|
|
/* */
|
|
|
|
func->write_u8(handle, element->maxradios);
|
|
|
|
func->write_u8(handle, element->radiosinuse);
|
|
|
|
func->write_u8(handle, element->encryptsubelement->count);
|
|
|
|
|
|
|
|
/* */
|
|
|
|
for (i = 0; i < element->encryptsubelement->count; i++) {
|
|
|
|
struct capwap_wtpdescriptor_encrypt_subelement* desc = (struct capwap_wtpdescriptor_encrypt_subelement*)capwap_array_get_item_pointer(element->encryptsubelement, i);
|
|
|
|
|
|
|
|
func->write_u8(handle, desc->wbid & 0x1f);
|
|
|
|
func->write_u16(handle, desc->capabilities);
|
2013-05-01 14:52:55 +02:00
|
|
|
}
|
2013-05-27 21:33:23 +02:00
|
|
|
|
|
|
|
/* */
|
|
|
|
for (i = 0; i < element->descsubelement->count; i++) {
|
|
|
|
struct capwap_wtpdescriptor_desc_subelement* desc = (struct capwap_wtpdescriptor_desc_subelement*)capwap_array_get_item_pointer(element->descsubelement, i);
|
|
|
|
|
|
|
|
func->write_u32(handle, desc->vendor);
|
|
|
|
func->write_u16(handle, desc->type);
|
|
|
|
func->write_u16(handle, desc->length);
|
|
|
|
func->write_block(handle, desc->data, desc->length);
|
2013-05-01 14:52:55 +02:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* */
|
2013-05-27 21:33:23 +02:00
|
|
|
static void capwap_wtpdescriptor_element_free(void* data) {
|
|
|
|
struct capwap_wtpdescriptor_element* dataelement = (struct capwap_wtpdescriptor_element*)data;
|
|
|
|
|
|
|
|
ASSERT(dataelement != NULL);
|
|
|
|
ASSERT(dataelement->encryptsubelement != NULL);
|
|
|
|
ASSERT(dataelement->descsubelement != NULL);
|
|
|
|
|
|
|
|
capwap_array_free(dataelement->encryptsubelement);
|
|
|
|
capwap_array_free(dataelement->descsubelement);
|
|
|
|
capwap_free(dataelement);
|
2013-05-01 14:52:55 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
/* */
|
2013-05-27 21:33:23 +02:00
|
|
|
static void* capwap_wtpdescriptor_element_parsing(capwap_message_elements_handle handle, struct capwap_read_message_elements_ops* func) {
|
|
|
|
uint8_t i;
|
|
|
|
uint8_t encryptlength;
|
2013-05-01 14:52:55 +02:00
|
|
|
struct capwap_wtpdescriptor_element* data;
|
|
|
|
|
2013-05-27 21:33:23 +02:00
|
|
|
ASSERT(handle != NULL);
|
|
|
|
ASSERT(func != NULL);
|
|
|
|
|
|
|
|
if (func->read_ready(handle) < 33) {
|
2013-05-01 14:52:55 +02:00
|
|
|
capwap_logging_debug("Invalid WTP Descriptor element");
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* */
|
|
|
|
data = (struct capwap_wtpdescriptor_element*)capwap_alloc(sizeof(struct capwap_wtpdescriptor_element));
|
|
|
|
if (!data) {
|
|
|
|
capwap_outofmemory();
|
|
|
|
}
|
|
|
|
|
2013-06-08 17:26:10 +02:00
|
|
|
data->encryptsubelement = capwap_array_create(sizeof(struct capwap_wtpdescriptor_encrypt_subelement), 0, 0);
|
|
|
|
data->descsubelement = capwap_array_create(sizeof(struct capwap_wtpdescriptor_desc_subelement), 0, 1);
|
2013-05-01 14:52:55 +02:00
|
|
|
|
2013-05-27 21:33:23 +02:00
|
|
|
/* Retrieve data */
|
|
|
|
func->read_u8(handle, &data->maxradios);
|
|
|
|
func->read_u8(handle, &data->radiosinuse);
|
|
|
|
func->read_u8(handle, &encryptlength);
|
2013-05-01 14:52:55 +02:00
|
|
|
|
2013-05-27 21:33:23 +02:00
|
|
|
/* Check */
|
|
|
|
if (!encryptlength) {
|
2013-05-01 14:52:55 +02:00
|
|
|
capwap_logging_debug("Invalid WTP Descriptor element");
|
|
|
|
capwap_wtpdescriptor_element_free(data);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2013-05-27 21:33:23 +02:00
|
|
|
/* Encryption Subelement */
|
|
|
|
for (i = 0; i < encryptlength; i++) {
|
|
|
|
struct capwap_wtpdescriptor_encrypt_subelement* desc;
|
|
|
|
|
|
|
|
/* Check */
|
|
|
|
if (func->read_ready(handle) < 3) {
|
2013-05-01 14:52:55 +02:00
|
|
|
capwap_logging_debug("Invalid WTP Descriptor element");
|
|
|
|
capwap_wtpdescriptor_element_free(data);
|
|
|
|
return NULL;
|
|
|
|
}
|
2013-05-27 21:33:23 +02:00
|
|
|
|
2013-05-01 14:52:55 +02:00
|
|
|
/* */
|
2013-05-27 21:33:23 +02:00
|
|
|
desc = (struct capwap_wtpdescriptor_encrypt_subelement*)capwap_array_get_item_pointer(data->encryptsubelement, data->encryptsubelement->count);
|
|
|
|
func->read_u8(handle, &desc->wbid);
|
|
|
|
func->read_u16(handle, &desc->capabilities);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* WTP Description Subelement */
|
|
|
|
while (func->read_ready(handle) > 0) {
|
|
|
|
unsigned short length;
|
|
|
|
struct capwap_wtpdescriptor_desc_subelement* desc;
|
|
|
|
|
|
|
|
/* Check */
|
|
|
|
if (func->read_ready(handle) < 8) {
|
|
|
|
capwap_logging_debug("Invalid WTP Descriptor element");
|
|
|
|
capwap_wtpdescriptor_element_free(data);
|
|
|
|
return NULL;
|
|
|
|
}
|
2013-05-01 14:52:55 +02:00
|
|
|
|
|
|
|
/* */
|
2013-05-27 21:33:23 +02:00
|
|
|
desc = (struct capwap_wtpdescriptor_desc_subelement*)capwap_array_get_item_pointer(data->descsubelement, data->descsubelement->count);
|
|
|
|
func->read_u32(handle, &desc->vendor);
|
|
|
|
func->read_u16(handle, &desc->type);
|
|
|
|
func->read_u16(handle, &desc->length);
|
|
|
|
|
|
|
|
/* Check buffer size */
|
|
|
|
length = func->read_ready(handle);
|
|
|
|
if ((length > CAPWAP_WTPDESC_SUBELEMENT_MAXDATA) || (length < desc->length)) {
|
|
|
|
capwap_logging_debug("Invalid WTP Descriptor element");
|
|
|
|
capwap_wtpdescriptor_element_free(data);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
func->read_block(handle, desc->data, desc->length);
|
2013-05-01 14:52:55 +02:00
|
|
|
}
|
2013-05-27 21:33:23 +02:00
|
|
|
|
2013-05-01 14:52:55 +02:00
|
|
|
return data;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* */
|
2013-05-27 21:33:23 +02:00
|
|
|
struct capwap_message_elements_ops capwap_element_wtpdescriptor_ops = {
|
|
|
|
.create_message_element = capwap_wtpdescriptor_element_create,
|
|
|
|
.parsing_message_element = capwap_wtpdescriptor_element_parsing,
|
|
|
|
.free_parsed_message_element = capwap_wtpdescriptor_element_free
|
|
|
|
};
|