server.h

#include <stdio.h>
#include <stdlib.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <errno.h>
#include <unistd.h>
#include <sys/stat.h>
#include <dirent.h>
#include <string.h>

#define MAX_BUF_LEN 512
#define MAX_USERS 32
#define MAX_MSG_LEN 48

struct ConfigData {
    int port;
    char* work_dir;
    char* users[MAX_USERS];
    char* passwords[MAX_USERS];
};

int config_socket(struct ConfigData config_data);
void config_parse(struct ConfigData *config_data);
void child_handler(int client, struct ConfigData* config_data);
int validate_credentials(int client, struct ConfigData *config_data);
void recv_header(int client, char *header, int header_size);
void setup_directory(char *user, struct ConfigData *config_data);
void put_routine(int client, char *filename, unsigned int filesize);
void get_routine(int client, char *filename);
void list_routine(int client);