- wrote payload sa_payload

- wrote additions in generator sa_payload 
- wrote test for sa_payload

Source/charon/generator.c

@@ -36,7 +36,7 @@
 #include "payloads/proposal_substructure.h"
 #include "payloads/transform_substructure.h"
 #include "payloads/sa_payload.h"
-
+#include "payloads/ke_payload.h"
 
 extern logger_manager_t *global_logger_manager;
 
@@ -736,6 +736,30 @@ static status_t generate_payload (private_generator_t *this,payload_t *payload)
 				status = this->generate_from_chunk(this,rules[i].offset);
 				break;
 			}
+			case KEY_EXCHANGE_DATA:
+			{
+				/* the Key Exchange Data value is generated from chunk */
+				status = this->generate_from_chunk(this,rules[i].offset);
+				if (status != SUCCESS)
+				{
+					this->logger->log(this->logger,CONTROL_MORE,"Could no write key exchange data from chunk");	
+					return status;
+				}
+				
+				/* before iterative generate the transforms, store the current payload length position */
+				u_int32_t payload_length_position_offset = this->last_payload_length_position_offset;
+				/* Length of KE_PAYLOAD is calculated */
+				u_int16_t length_of_ke_payload = KE_PAYLOAD_HEADER_LENGTH + ((chunk_t *)(this->data_struct + rules[i].offset))->len;
+
+				u_int16_t int16_val = htons(length_of_ke_payload);			
+				status = this->write_bytes_to_buffer_at_offset(this,&int16_val,sizeof(u_int16_t),payload_length_position_offset);
+				if (status != SUCCESS)
+				{
+					this->logger->log(this->logger,CONTROL_MORE,"Could no write payload length into buffer");					
+					return status;
+				}
+				break;
+			}			
 			case PROPOSALS:
 			{
 				/* before iterative generate the transforms, store the current payload length position */