82 lines
2.3 KiB
C
82 lines
2.3 KiB
C
#ifndef PACKET_H
|
|
#define PACKET_H
|
|
|
|
#include <string.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <stdint.h>
|
|
#include <stdarg.h>
|
|
#include <stdbool.h>
|
|
#include <unistd.h>
|
|
#include <errno.h>
|
|
#include <signal.h>
|
|
#include <time.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/types.h>
|
|
#include <sys/epoll.h>
|
|
#include <arpa/inet.h>
|
|
#include <netinet/in.h>
|
|
#include <netdb.h>
|
|
#include <fcntl.h>
|
|
#include <pthread.h>
|
|
#include <sodium.h>
|
|
#include <libgen.h>
|
|
#include <wchar.h>
|
|
|
|
#include "config.h"
|
|
|
|
#define ERROR_LENGTH 26
|
|
|
|
#define ZSM_TYP_AUTH 0x1
|
|
#define ZSM_TYP_MESSAGE 0x2
|
|
#define ZSM_TYP_UPDATE_MESSAGE 0x3
|
|
#define ZSM_TYP_DELETE_MESSAGE 0x4
|
|
#define ZSM_TYP_ERROR 0x5
|
|
#define ZSM_TYP_INFO 0x6
|
|
|
|
#define ZSM_STA_SUCCESS 0x1
|
|
#define ZSM_STA_INVALID_TYPE 0x2
|
|
#define ZSM_STA_INVALID_LENGTH 0x3
|
|
#define ZSM_STA_TOO_LONG 0x4
|
|
#define ZSM_STA_READING_SOCKET 0x5
|
|
#define ZSM_STA_WRITING_SOCKET 0x6
|
|
#define ZSM_STA_UNKNOWN_USER 0x7
|
|
#define ZSM_STA_MEMORY_ALLOCATION 0x8
|
|
#define ZSM_STA_ERROR_ENCRYPT 0x9
|
|
#define ZSM_STA_ERROR_DECRYPT 0xA
|
|
#define ZSM_STA_ERROR_AUTHENTICATE 0xB
|
|
#define ZSM_STA_ERROR_INTEGRITY 0xC
|
|
#define ZSM_STA_UNAUTHORISED 0xD
|
|
#define ZSM_STA_AUTHORISED 0xE
|
|
|
|
#define ADDRESS_SIZE MAX_NAME + 1 + 255 /* 1 for @, 255 for domain, defined in RFC 5321, Section 4.5.3.1.2 */
|
|
#define CHALLENGE_SIZE 32
|
|
#define HASH_SIZE crypto_generichash_BYTES
|
|
#define NONCE_SIZE crypto_aead_xchacha20poly1305_ietf_NPUBBYTES
|
|
#define ADDITIONAL_SIZE crypto_aead_xchacha20poly1305_ietf_ABYTES
|
|
|
|
typedef struct packet {
|
|
uint8_t status;
|
|
uint8_t type;
|
|
uint32_t length;
|
|
uint8_t *data;
|
|
uint8_t *signature;
|
|
} packet;
|
|
|
|
#include "key.h"
|
|
|
|
/* Utilities functions */
|
|
void print_packet(packet *msg);
|
|
int recv_packet(packet *pkt, int fd, uint8_t required_type);
|
|
packet *create_packet(uint8_t option, uint8_t type, uint32_t length, uint8_t *data, uint8_t *signature);
|
|
int send_packet(packet *msg, int fd);
|
|
void free_packet(packet *msg);
|
|
int encrypt_packet(int sockfd, key_pair *kp);
|
|
packet *verify_packet(packet *pkt, int fd);
|
|
uint8_t *encrypt_data(uint8_t *from, uint8_t *to, uint8_t *raw, uint32_t raw_length, uint32_t *length);
|
|
uint8_t *decrypt_data(packet *pkt);
|
|
int verify_integrity(packet *pkt, public_key *pk);
|
|
uint8_t *create_signature(uint8_t *data, uint32_t length, secret_key *sk);
|
|
|
|
#endif
|