packets.h

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#ifndef C_CHAT_PACKETS_H
#define C_CHAT_PACKETS_H
 
#include "constants.h"
#include "sockets.h"
 
struct PacketJoin {
    char type;
    char username[USERNAME_MAX_LENGTH + 1];
};
extern const union Packet NewPacketJoin;
 
struct PacketLeave {
    char type;
    char username[USERNAME_MAX_LENGTH + 1];
};
extern const union Packet NewPacketLeave;
 
struct PacketText {
    char type;
    char message[MSG_MAX_LENGTH + 1];
    char username[USERNAME_MAX_LENGTH + 1];
};
extern const union Packet NewPacketText;
 
struct PacketDefineUsername {
    char type;
    char username[USERNAME_MAX_LENGTH + 1];
};
extern const union Packet NewPacketDefineUsername;
 
struct PacketServerErrorMessage {
    char type;
    char message[MSG_MAX_LENGTH + 1];
};
extern const union Packet NewPacketServerErrorMessage;
 
struct PacketUsernameChanged {
    char type;
    char oldUsername[USERNAME_MAX_LENGTH + 1];
    char newUsername[USERNAME_MAX_LENGTH + 1];
};
extern const union Packet NewPacketUsernameChanged;
 
struct PacketQuit {
    char type;
};
extern const union Packet NewPacketQuit;
 
struct PacketFileUploadRequest {
    char type;
    long long fileSize;
};
extern const union Packet NewPacketFileUploadRequest;
 
struct PacketFileDownloadRequest {
    char type;
    unsigned int fileId;
};
extern const union Packet NewPacketFileDownloadRequest;
 
struct PacketFileUploadValidation {
    char type;
    char accepted;
    unsigned int id;
};
extern const union Packet NewPacketFileUploadValidation;
 
struct PacketFileDownloadValidation {
    char type;
    char accepted;
    unsigned int fileId;
    long long fileSize;
};
extern const union Packet NewPacketFileDownloadValidation;
 
struct PacketFileDataTransfer {
    char type;
    unsigned int id;
    char data[FILE_TRANSFER_CHUNK_SIZE];
};
extern const union Packet NewPacketFileDataTransfer;
 
struct PacketFileTransferCancel {
    char type;
    unsigned int id;
};
extern const union Packet NewPacketFileTransferCancel;
 
struct PacketServerSuccess {
    char type;
    char message[MSG_MAX_LENGTH +1];
};
extern const union Packet NewPacketServerSuccess;
 
struct PacketCreateRoom {
    char type;
    char roomName[ROOM_NAME_MAX_LENGTH + 1];
    char roomDesc[ROOM_DESC_MAX_LENGTH + 1];
};
extern const union Packet NewPacketCreateRoom;
 
struct PacketJoinRoom {
    char type;
    char roomName[ROOM_NAME_MAX_LENGTH + 1];
};
extern const union Packet NewPacketJoinRoom;
 
struct PacketLeaveRoom {
    char type;
};
extern const union Packet NewPacketLeaveRoom;
 
struct PacketListRooms {
    char type;
};
extern const union Packet NewPacketListRooms;
 
typedef union Packet {
    char type;
    struct PacketJoin asJoinPacket;
    struct PacketLeave asLeavePacket;
    struct PacketText asTextPacket;
    struct PacketDefineUsername asDefineUsernamePacket;
    struct PacketServerErrorMessage asServerErrorMessagePacket;
    struct PacketUsernameChanged asUsernameChangedPacket;
    struct PacketFileUploadRequest asFileUploadRequestPacket;
    struct PacketFileDownloadRequest asFileDownloadRequestPacket;
    struct PacketFileUploadValidation asFileUploadValidationPacket;
    struct PacketFileDownloadValidation asFileDownloadValidationPacket;
    struct PacketFileDataTransfer asFileDataTransferPacket;
    struct PacketFileTransferCancel asFileTransferCancelPacket;
    struct PacketServerSuccess asServerSuccessMessagePacket;
    struct PacketCreateRoom asCreateRoomPacket;
    struct PacketJoinRoom asJoinRoomPacket;
} Packet;
 
int receiveNextPacket(Socket socket, Packet* packet);
 
int sendPacket(Socket socket, Packet* packet);
 
#endif //C_CHAT_PACKETS_H