#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#define PORT 5000

int serve (int sd);

void main () {
    int sd;
    struct sockaddr_in server;
    struct hostent * server_host;
    char buf[1024];
    if ((sd=socket(AF_INET,SOCK_STREAM,0))<0) {
        fprintf(stderr,"client cannot create socket\n");
        perror(0);
        exit(1);
    }
    if ((server_host=gethostbyname("serifos"))==NULL) {
        fprintf(stderr,"unkown host\n");
        exit(1);
    }
    server.sin_family=AF_INET;
    server.sin_port=htons(PORT);
    bcopy((char *)server_host->h_addr,(char *)&server.sin_addr,server_host->h_length);
    if (connect(sd, &server, sizeof(server)) <0) {
        fprintf(stderr, "cannot connect to server\n");
        perror(0);
        exit(1);
    }
    printf("client requesting permission\n");
    read(sd,&buf,strlen(buf));
    if (!(strcmp(buf,"accept"))) {
        printf("Connection established\n");
        serve(sd);
    }
    if (!(strcmp(buf,"quit")))
        printf("connection refused by user\n");
    close(sd);
    exit(0);
}


int serve(int sd) {
    char c;
    FILE *ifp;
    ifp=fopen("sendme","r");
    if (ifp==NULL) {
        printf("sfalma sto anoigma arxeiou\n");
        return -1;
    }
    c=getc(ifp);
    printf("sending...\n");
    while (c!=EOF) {
        write(sd,&c,sizeof(char));
        c=getc(ifp);
    }
    printf("file sent\n");
    fclose(ifp);
    return 0;
}