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#ifndef SESSION_BUILDER_INTERNAL_H
#define SESSION_BUILDER_INTERNAL_H
#include <stdint.h>
#include "signal_protocol_types.h"
/**
* Build a new session from a received pre_key_signal_message.
*
* After a session is constructed in this way, the embedded signal_message
* can be decrypted.
*
* @param message The received pre_key_signal_message.
* @param unsigned_pre_key_id set to the unsigned pre key ID, if available.
* Return value indicates whether or not this value is available.
* @retval 0 Success, no unsigned pre key value available
* @retval 1 Success, an unsigned pre key is available
* @retval SG_ERR_INVALID_KEY_ID when there is no local pre_key_record that
* corresponds to the PreKey ID in the message.
* @retval SG_ERR_INVALID_KEY when the message is formatted incorrectly.
* @retval SG_ERR_UNTRUSTED_IDENTITY when the identity key of the sender is untrusted.
*/
int session_builder_process_pre_key_signal_message(session_builder *builder,
session_record *record, pre_key_signal_message *message, uint32_t *unsigned_pre_key_id);
#endif /* SESSION_BUILDER_INTERNAL_H */
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