112 lines
3.1 KiB
C
112 lines
3.1 KiB
C
#include "capwap.h"
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#include "element.h"
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/*
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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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* | Vendor Identifier |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Element ID | Data...
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*
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* Type: 37 for Vendor Specific Payload
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*
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* Length: >= 7
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*
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*/
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/* */
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static void capwap_vendorpayload_element_create(void* data,
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capwap_message_elements_handle handle,
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struct capwap_write_message_elements_ops* func)
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{
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struct capwap_vendorpayload_element* element = (struct capwap_vendorpayload_element *)data;
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ASSERT(data != NULL);
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ASSERT(element->datalength > 0);
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func->write_u32(handle, element->vendorid);
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func->write_u16(handle, element->elementid);
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func->write_block(handle, element->data, element->datalength);
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}
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/* */
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static void* capwap_vendorpayload_element_clone(void *data)
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{
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struct capwap_vendorpayload_element* element = (struct capwap_vendorpayload_element *)data;
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ASSERT(data != NULL);
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return capwap_clone(data, sizeof(struct capwap_vendorpayload_element) + element->datalength);
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}
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/* */
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static void capwap_vendorpayload_element_free(void *data)
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{
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ASSERT(data != NULL);
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capwap_free(data);
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}
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/* */
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void *
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capwap_unknown_vendorpayload_element_parsing(capwap_message_elements_handle handle,
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struct capwap_read_message_elements_ops *func,
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unsigned short length,
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const struct capwap_message_element_id vendor_id)
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{
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struct capwap_vendorpayload_element* data;
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/* Retrieve data */
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data = (struct capwap_vendorpayload_element *)capwap_alloc(sizeof(struct capwap_vendorpayload_element)
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+ length);
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data->vendorid = vendor_id.vendor;
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data->elementid = vendor_id.type;
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data->datalength = length;
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func->read_block(handle, data->data, length);
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return data;
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}
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/* */
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static void *
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capwap_vendorpayload_element_parsing(capwap_message_elements_handle handle,
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struct capwap_read_message_elements_ops *func)
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{
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unsigned short length;
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struct capwap_message_element_id vendor_id;
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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 < 7) {
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log_printf(LOG_DEBUG, "Invalid Vendor Specific Payload element: underbuffer");
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return NULL;
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}
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length -= 6;
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if (length > CAPWAP_VENDORPAYLOAD_MAXLENGTH) {
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log_printf(LOG_DEBUG, "Invalid Vendor Specific Payload element: overbuffer");
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return NULL;
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}
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/* Retrieve data */
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func->read_u32(handle, &vendor_id.vendor);
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func->read_u16(handle, &vendor_id.type);
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return capwap_unknown_vendorpayload_element_parsing(handle, func, length, vendor_id);
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}
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/* */
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const struct capwap_message_elements_ops capwap_element_vendorpayload_ops = {
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.category = CAPWAP_MESSAGE_ELEMENT_ARRAY,
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.create = capwap_vendorpayload_element_create,
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.parse = capwap_vendorpayload_element_parsing,
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.clone = capwap_vendorpayload_element_clone,
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.free = capwap_vendorpayload_element_free
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};
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