Implement FTP Client-Server

FTP Client.c

#include<stdio.h>
#include<sys/socket.h>
#include<netinet/in.h>
#include<stdlib.h>
#include<unistd.h>
#include<string.h>
#include<netdb.h>
#include<arpa/inet.h>
#include<sys/types.h>
#include<time.h>
#define MAX 100;

main(int argc,char**argv)
{
int sockfd,n,connfd;
char str[100],str1[100],s[2];
struct sockaddr_in serv;
if(argc!=5)
{
exit(0);
}
if(sockfd=socket(AF_INET,SOCK_STREAM,0))<0)
{
printf("\n Error ! Socket not created...\n");
exit (0);
}
bzero(&serv,sizeof(serv));
serv.sin_family=AF_INET;
serv.sin_port=htons(atoi(argv[2]));
if(inet_pton(AF_INET,argv[1],&serv.sin_addr)<=0)
{
printf("\n error in conversion of IP address from string to num\n"),
exit(0);
}
if(connect(sockfd,(struct sockaddr*)&serv,sizeof(serv))<0)
{
printf("\n Error!Conx not established...\n);
exit(0);
}
printf("\n connected...sending file name%s\n",argv[3]);
write(sockfd,argv[],strlen(argv[3]));    read(sockfd,s,3);
write(sockfd,argv[4],strlen(argv[4]));
str1[0]='\0';
while((n=read(sockfd,str,100))>0)
{
str[n]='\0';
printf("%s\n",str);
write(sockfd,str,strlen(str));
}
if(n<0)
printf("\n Read error...\n");
exit (0);
}


FTP Server.c

#include<stdio.h>
#include<sys/socket.h>
#include<netinet/in.h>
#include<stdlib.h>
#include<unistd.h>
#include<string.h>
#include<netdb.h>
#include<arpa/inet.h>
#include<sys/types.h>
#include<time.h>
#define MAX 100;

int main ()
{
int listenfd,connfd,n,nl;
struct sockaddr_in serv;
char str1 [100],str2[100],fname[20],fname1[20],s[2],
int port=9999;
FILE*f1*f2;
listenfd=socket(AF_INET,SOCK_STREAM,0);
bzero(&serv,sizeof(serv);
serv.sin_family=AF_INET;
serv.sin_addr.s_addr=htonl(INADDR_ANY);
serv.sin_port=htons(port);
bind(listenfd,(struct sockaddr*)&serv,sizeof(serv));
"serftp4.cpp"54L, 1518C
listen(listenfd,5);
for(;;)
{
connfd=accept(listenfd,(struct sockaddr*)NULL,NULL);
printf("\nClient requesting");
n=read(connfd,fname,20);
fname(n)='\0';
printf("\n Received:%s\n",fname);
f1=fopen(fname)."r");
strcpy(s,"ab");
write(connfd,s,strlen(s));
n1=read(connfd,fname1,20);
fname1[n1]=;\0';
printf("stored in:%s\n"'fname 1);
f2=fopen(fname1,"w");
while(!feof(f1))
{
fgets(str1,50f1);
write(connfd,str,1,strlen(str1));
n=read(connfd,str,2,100);
str2[n]='\0';
fputs(str2,f2);
}
fclose(f1);
fclose(f2);
close(connfd);
}
return 0;
}


OUTPUT SCREEN:-

Server Side:

[cseb17@localhost cseb 17]$ cc FTPserver.c
[cseb17@localhost cseb 17]$.a/out
Client requesting
Received:new.c
Stored in : thanga.c

Client side:

[cseb17@localhost cseb 17]$cc FTPclient.c
[cseb17@localhost cseb 17]$./a.out 127.0.0.1 6142 new.c.thanga.c

connected...sending filename new.c
hai how are you?