136 lines
4.0 KiB
C
136 lines
4.0 KiB
C
#include "capwap.h"
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#include "element.h"
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/********************************************************************
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0 1 2 3
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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
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| Radio ID | Length | MAC Address ...
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| VLAN Name...
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+-+-+-+-+-+-+-+-+
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Type: 8 for Add Station
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Length: >= 8
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********************************************************************/
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/* */
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static void capwap_addstation_element_create(void* data, capwap_message_elements_handle handle, struct capwap_write_message_elements_ops* func) {
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struct capwap_addstation_element* element = (struct capwap_addstation_element*)data;
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ASSERT(data != NULL);
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ASSERT(IS_VALID_RADIOID(element->radioid));
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ASSERT(IS_VALID_MACADDRESS_LENGTH(element->length));
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func->write_u8(handle, element->radioid);
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func->write_u8(handle, element->length);
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func->write_block(handle, element->address, element->length);
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if (element->vlan && *element->vlan) {
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unsigned short length = strlen((char*)element->vlan);
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ASSERT(length <= CAPWAP_ADDSTATION_VLAN_MAX_LENGTH);
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func->write_block(handle, element->vlan, length);
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}
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}
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/* */
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static void* capwap_addstation_element_clone(void* data) {
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struct capwap_addstation_element* cloneelement;
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ASSERT(data != NULL);
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cloneelement = capwap_clone(data, sizeof(struct capwap_addstation_element));
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if (cloneelement->length > 0) {
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cloneelement->address = capwap_clone(((struct capwap_addstation_element*)data)->address, cloneelement->length);
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}
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if (cloneelement->vlan) {
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cloneelement->vlan = (uint8_t*)capwap_duplicate_string((char*)((struct capwap_addstation_element*)data)->vlan);
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}
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return cloneelement;
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}
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/* */
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static void capwap_addstation_element_free(void* data) {
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struct capwap_addstation_element* element = (struct capwap_addstation_element*)data;
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ASSERT(data != NULL);
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if (element->vlan) {
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capwap_free(element->vlan);
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}
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if (element->address) {
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capwap_free(element->address);
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}
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capwap_free(element);
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}
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/* */
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static void* capwap_addstation_element_parsing(capwap_message_elements_handle handle, struct capwap_read_message_elements_ops* func) {
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unsigned short length;
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struct capwap_addstation_element* data;
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ASSERT(handle != NULL);
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ASSERT(func != NULL);
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length = func->read_ready(handle);
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if (length < 8) {
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log_printf(LOG_DEBUG, "Invalid Add Station element: underbuffer");
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return NULL;
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}
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length -= 2;
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/* */
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data = (struct capwap_addstation_element*)capwap_alloc(sizeof(struct capwap_addstation_element));
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memset(data, 0, sizeof(struct capwap_addstation_element));
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/* Retrieve data */
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func->read_u8(handle, &data->radioid);
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func->read_u8(handle, &data->length);
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if (!IS_VALID_RADIOID(data->radioid)) {
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capwap_addstation_element_free((void*)data);
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log_printf(LOG_DEBUG, "Invalid Add Station element: invalid radio");
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return NULL;
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} else if (!IS_VALID_MACADDRESS_LENGTH(data->length) || (length < data->length)) {
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capwap_addstation_element_free((void*)data);
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log_printf(LOG_DEBUG, "Invalid Add Station element: invalid length");
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return NULL;
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}
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data->address = (uint8_t*)capwap_alloc(data->length);
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func->read_block(handle, data->address, data->length);
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length -= data->length;
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if (length > 0) {
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if (length <= CAPWAP_ADDSTATION_VLAN_MAX_LENGTH) {
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data->vlan = (uint8_t*)capwap_alloc(length + 1);
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func->read_block(handle, data->vlan, length);
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data->vlan[length] = 0;
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} else {
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capwap_addstation_element_free((void*)data);
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log_printf(LOG_DEBUG, "Invalid Add Station element: invalid vlan");
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return NULL;
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}
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}
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return data;
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}
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/* */
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const struct capwap_message_elements_ops capwap_element_addstation_ops = {
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.category = CAPWAP_MESSAGE_ELEMENT_SINGLE,
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.create = capwap_addstation_element_create,
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.parse = capwap_addstation_element_parsing,
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.clone = capwap_addstation_element_clone,
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.free = capwap_addstation_element_free
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};
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