125 lines
3.9 KiB
C
125 lines
3.9 KiB
C
#pragma once
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#include "types.h"
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#include <netdb.h>
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#include <stddef.h>
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#include <stdint.h>
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// clang-format off
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/*
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0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
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#####################################
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# FLAGS #
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#####################################
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# SIZE #
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#####################################
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# DATA #
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#...................................#
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[16 bits] FLAGS
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=========================================================
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| 8 bits used for specifying the version
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---------------------------------------------------------
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| 1 bit used to specify if this is a request or response
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| 0- it's a request
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| 1- it's a response
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---------------------------------------------------------
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| 4 bits used for request/response codes
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| We have 4 types of different requests
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| 0- PING: checks if the server is avaliable
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| 1- INFO: gets information about the pool(s) the server is hosting
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| 2- LIST: requests the package list for certain pool
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| 3- PULL: requests a certain package from a certain pool
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| And 4 types of responses
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| 0- PONG: response for the ping request
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| 1- COOL: everything is fine, here's the data you requested
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| 2- BRUH: cannot access to the data you requested, or version mismatch
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| 3- WHAT: bad request
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---------------------------------------------------------
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| 1 bit used to specify if this the last response
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| 0- no stay connected, im not done responsing yet
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| 1- yes, im done, disconnect
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| always 1 for the requests
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---------------------------------------------------------
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| 2 bits is reserved for future use
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---------------------------------------------------------
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[16 bits] SIZE
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=========================================================
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| All bits used for specifying the DATA size, in bytes
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---------------------------------------------------------
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[...] DATA
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---------------------------------------------------------
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| Plaintext data used for that specific request/response,
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| max value for SIZE is 65535, so this section may have
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| 65535 bytes total
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---------------------------------------------------------
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*/
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// clang-format on
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#define MPTP_VERSION_SUPPORTED 0
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#define MPTP_VERSION_MAX 15 // 4 bits
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#define MPTP_CODE_MAX 4 // 2 bits
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#define MPTP_CHUNK_MAX 256
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#define MPTP_TIMEOUT 10
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#define MPTP_REQUEST 0
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#define MPTP_RESPONSE 1
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typedef enum lm_mptp_request {
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MPTP_C2S_PING = 0,
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MPTP_C2S_INFO = 1,
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MPTP_C2S_LIST = 2,
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MPTP_C2S_PULL = 3,
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} lm_mptp_request_t;
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typedef enum lm_mptp_response {
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MPTP_S2C_PONG = 0,
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MPTP_S2C_COOL = 1,
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MPTP_S2C_BRUH = 2,
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MPTP_S2C_WHAT = 3,
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} lm_mptp_response_t;
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typedef struct lm_mptp_header {
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uint16_t flags;
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uint16_t size;
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} lm_mptp_header_t;
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typedef struct lm_mptp {
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lm_mptp_header_t header;
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char data[MPTP_CHUNK_MAX];
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} lm_mptp_t;
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#define MPTP_FLAGS_VERSION(m) ((m)->header.flags & 0xFF00) >> 8
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#define MPTP_FLAGS_REQUEST(m) ((m)->header.flags & 0x0080) >> 1
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#define MPTP_FLAGS_TYPE(m) ((m)->header.flags & 0x0070) >> 4
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#define MPTP_FLAGS_LAST(m) ((m)->header.flags & 0x0008) >> 3
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#define MPTP_IS_REQUEST(m) MPTP_FLAGS_REQUEST(m) == 0
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#define MPTP_IS_LAST(m) MPTP_FLAGS_LAST(m) == 1
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bool lm_mptp_packet_init(lm_mptp_t *packet, bool is_request, uint8_t code, bool is_last);
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int lm_mptp_socket(char *addr, uint16_t port, struct sockaddr *saddr);
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void lm_mptp_close(int sock);
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int lm_mptp_client_connect(char *addr, uint16_t port);
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bool lm_mptp_client_verify(int sock, lm_mptp_t *packet); // not implemented
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bool lm_mptp_client_send(int sock, lm_mptp_t *packet);
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bool lm_mptp_client_recv(int sock, lm_mptp_t *packet);
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int lm_mptp_server_listen(char *addr, uint16_t port);
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bool lm_mptp_server_verify(int sock, lm_mptp_t *packet, struct sockaddr *addr); // not implemented
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bool lm_mptp_server_recv(int sock, lm_mptp_t *packet, struct sockaddr *addr);
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bool lm_mptp_server_send(int sock, lm_mptp_t *packet, struct sockaddr *adrr);
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