63 lines
1.9 KiB
C
63 lines
1.9 KiB
C
#ifndef OMNI_PROTOCOL_H
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#define OMNI_PROTOCOL_H
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#include "omni_common.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef enum message_type {
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MSG_TYPE_TEXT = 0,
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MSG_TYPE_FILE = 1,
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MSG_TYPE_REGISTER = 2,
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MSG_TYPE_ERROR = 3,
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MSG_TYPE_BINARY = 4,
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MSG_TYPE_INVALID = 255
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} message_type_t;
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#define SERVER_PEER_ID "server"
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typedef struct message {
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message_type_t type;
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uint64_t id;
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char from[OMNI_MAX_PEER_ID];
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char to[OMNI_MAX_PEER_ID];
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char file_name[OMNI_MAX_FILE_NAME];
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uint8_t *body;
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size_t body_len;
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} message_t;
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typedef struct protocol_frame_decoder {
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uint8_t *buffer;
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size_t len;
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size_t cap;
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} protocol_frame_decoder_t;
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const char *protocol_message_type_name(message_type_t type);
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int protocol_message_type_from_name(const char *raw, message_type_t *out);
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void protocol_message_init(message_t *msg);
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void protocol_message_clear(message_t *msg);
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int protocol_message_copy(message_t *dst, const message_t *src);
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int protocol_validate_message(const message_t *msg, char *err, size_t err_len);
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int protocol_encode_message_datagram(const message_t *msg, uint8_t **out, size_t *out_len);
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int protocol_decode_message_datagram(const uint8_t *data, size_t data_len, message_t *out_msg, char *err, size_t err_len);
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int protocol_encode_message_stream(const message_t *msg, uint8_t **out, size_t *out_len);
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int protocol_decode_message_stream_payload(const uint8_t *payload, size_t payload_len, message_t *out_msg, char *err, size_t err_len);
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void protocol_frame_decoder_init(protocol_frame_decoder_t *decoder);
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void protocol_frame_decoder_reset(protocol_frame_decoder_t *decoder);
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void protocol_frame_decoder_destroy(protocol_frame_decoder_t *decoder);
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int protocol_frame_decoder_feed(protocol_frame_decoder_t *decoder, const uint8_t *data, size_t data_len);
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int protocol_frame_decoder_next(protocol_frame_decoder_t *decoder, uint8_t **payload, size_t *payload_len);
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#ifdef __cplusplus
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}
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#endif
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#endif
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