116 lines
4.1 KiB
C
116 lines
4.1 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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| IP Address |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| IP Address |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| IP Address |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| IP Address |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| Status | Length | MAC Address ...
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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Type: 22 for Duplicate IPv6 Address
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Length: >= 24
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********************************************************************/
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/* */
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static void capwap_duplicateipv6_element_create(void* data, capwap_message_elements_handle handle, struct capwap_write_message_elements_ops* func) {
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struct capwap_duplicateipv6_element* element = (struct capwap_duplicateipv6_element*)data;
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ASSERT(data != NULL);
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ASSERT((element->status == CAPWAP_DUPLICATEIPv6_CLEARED) || (element->status == CAPWAP_DUPLICATEIPv6_DETECTED));
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ASSERT(IS_VALID_MACADDRESS_LENGTH(element->length));
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func->write_block(handle, (uint8_t*)&element->address, sizeof(struct in6_addr));
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func->write_u8(handle, element->status);
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func->write_u8(handle, element->length);
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func->write_block(handle, element->macaddress, element->length);
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}
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/* */
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static void* capwap_duplicateipv6_element_clone(void* data) {
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struct capwap_duplicateipv6_element* cloneelement;
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ASSERT(data != NULL);
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cloneelement = capwap_clone(data, sizeof(struct capwap_duplicateipv6_element));
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if (cloneelement->length > 0) {
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cloneelement->macaddress = capwap_clone(((struct capwap_duplicateipv6_element*)data)->macaddress, cloneelement->length);
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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_duplicateipv6_element_free(void* data) {
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struct capwap_duplicateipv6_element* element = (struct capwap_duplicateipv6_element*)data;
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ASSERT(data != NULL);
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if (element->macaddress) {
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capwap_free(element->macaddress);
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}
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capwap_free(data);
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}
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/* */
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static void* capwap_duplicateipv6_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_duplicateipv6_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 < 24) {
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log_printf(LOG_DEBUG, "Invalid Duplicate IPv6 Address element: underbuffer");
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return NULL;
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}
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length -= 18;
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/* */
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data = (struct capwap_duplicateipv6_element*)capwap_alloc(sizeof(struct capwap_duplicateipv6_element));
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memset(data, 0, sizeof(struct capwap_duplicateipv6_element));
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/* Retrieve data */
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func->read_block(handle, (uint8_t*)&data->address, sizeof(struct in6_addr));
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func->read_u8(handle, &data->status);
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func->read_u8(handle, &data->length);
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if ((data->status != CAPWAP_DUPLICATEIPv6_CLEARED) && (data->status != CAPWAP_DUPLICATEIPv6_DETECTED)) {
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capwap_duplicateipv6_element_free((void*)data);
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log_printf(LOG_DEBUG, "Invalid Duplicate IPv6 Address element: invalid status");
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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_duplicateipv6_element_free((void*)data);
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log_printf(LOG_DEBUG, "Invalid Duplicate IPv6 Address element: invalid length");
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return NULL;
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}
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data->macaddress = (uint8_t*)capwap_alloc(data->length);
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func->read_block(handle, data->macaddress, data->length);
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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_duplicateipv6_ops = {
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.category = CAPWAP_MESSAGE_ELEMENT_SINGLE,
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.create = capwap_duplicateipv6_element_create,
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.parse = capwap_duplicateipv6_element_parsing,
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.clone = capwap_duplicateipv6_element_clone,
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.free = capwap_duplicateipv6_element_free
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};
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