void
wtp_open (
const char *version, /* WTP version */
const char *protocol, /* Protocol from command-line */
const char *port) /* Port from command-line */
{
ASSERT (streq (version, "WTP/1.0"));
ASSERT (streq (protocol, "tcp"));
sock_init ();
ip_nonblock = FALSE; /* Use blocking socket i/o */
wtp_socket = connect_TCP (NULL, port);
if (wtp_socket == INVALID_SOCKET)
{
coprintf ("Cannot connect to port %s: %s (%s)\n",
port, connect_errlist [connect_error ()], sockmsg ());
exit (EXIT_FAILURE);
}
socket_nodelay (wtp_socket); /* Disable Nagle's Algorithm */
}
void ClientConnection::WaitForRequests() {
if (!ok) {
return;
}
fprintf(fd, "220 Service ready\n");
while(!parar) {
fscanf(fd, "%s", command);
if (COMMAND("USER")) {
fscanf(fd, "%s", arg);
if (strcmp(arg,"alu") == 0)
fprintf(fd, "331 User name ok, need password.\n");
else
fprintf(fd, "332 Need account for login.\n");
}
else if (COMMAND("PWD")) {
char aux[200];
getcwd(aux,sizeof(aux)); //La funcion getcwd esta en la librería unistd.h
fprintf(fd, "257 'PATHNAME' created %s\n",aux);
}
else if (COMMAND("PASS")) {
fscanf(fd, "%s", arg);
printf("(PASS):%s\n", arg);
if (!strcmp(arg,"1234"))
fprintf(fd, "230 User logged in, proceed.\n");
else
fprintf(fd, "530 Not logged in.\n");
}
else if (COMMAND("PORT")) {
int ip[4];
int puertos[2];
fscanf(fd, "%d,%d,%d,%d,%d,%d", &ip[0], &ip[1], &ip[2], &ip[3], &puertos[0], &puertos[1]);
uint32_t ip_addr = ip[3]<<24 | ip[2]<<16 | ip[1]<<8 | ip[0];
uint16_t port_v = puertos[0] << 8 | puertos[1];
data_socket = connect_TCP(ip_addr,port_v);
fprintf(fd, "200 Okey\n");
}
else if (COMMAND("PASV")) {
struct sockaddr_in sin;
socklen_t len = sizeof(sin);
int s = define_socket_TCP2(0);
getsockname(s, (struct sockaddr *) &sin, &len);
uint16_t puerto = sin.sin_port;
int p1 = puerto & 0xFF;
int p2 = puerto >> 8;
fprintf(fd, "227 entering passive mode (127,0,0,1,%d,%d)\n", p1, p2);
fflush(fd);
len = sizeof(sin);
data_socket = accept(s, (struct sockaddr*) &sin, &len);
}
else if (COMMAND("CWD")) {
char aux[200];
getcwd(aux,sizeof(aux));
if(chdir(aux) == 0)
fprintf(fd, "200 Working directory changed\n");
else
fprintf(fd, "431 No such directory\n");
}
else if (COMMAND("STOR") ) {
fscanf(fd, "%s", arg);
char buffer[MAX_BUFF];
int file;
int aux;
file=open(arg, O_RDWR|O_CREAT,S_IRWXU);
fprintf(fd, "150 File ok, creating connection\n");
fflush(fd);
if(file < 0)
{
fprintf(fd, "450 Requested file action not taken. File unavaible.\n");
}
else
{
do{
aux = read(data_socket,buffer,sizeof(buffer));
write(file,buffer,aux);
}while(aux > 0);
fprintf(fd,"250 Requested file action okay, completed.\n");
close(file);
close(data_socket);
}
}
else if (COMMAND("SYST")) {
fprintf(fd, "215 UNIX Type: L8.\n");
}
else if (COMMAND("TYPE")) {
fprintf(fd, "200 TYPE OK\n");
}
else if (COMMAND("RETR")) {
fscanf(fd, "%s", arg);
FILE* file = fopen(arg,"rb");
if (!file){
fprintf(fd, "450 Requested file action not taken. File unavaible.\n");
close(data_socket);
}
else{
fprintf(fd, "150 File status okay; about to open data connection.\n");
struct sockaddr_in sa;
socklen_t sa_len = sizeof(sa);
char buffer[MAX_BUFF];
int aux;
do{
aux = fread(buffer, sizeof(char), MAX_BUFF, file);
send(data_socket, buffer, aux, 0);
}while(aux == MAX_BUFF);
fprintf(fd,"226 Closing data connection. Requested file action successful.\n");
fclose(file);
close(data_socket);
}
}
else if (COMMAND("QUIT")) {
parar = true;
fprintf(fd, "221 Service closing control connection\n");
}
else if (COMMAND("LIST")) {
std::cout << "hago el ls" << std::endl;
fprintf(fd, "125 Data Transfer starting\n");
struct sockaddr_in sa;
socklen_t sa_len = sizeof(sa);
char buffer[MAX_BUFF];
std::string listado;
std::string ls = "ls";
FILE* file = popen(ls.c_str(), "r");
if (!file){
fprintf(fd, "450 File unavaible.\n");
close(data_socket);
}else{
while (!feof(file))
if (fgets(buffer, MAX_BUFF, file) != NULL)
listado.append(buffer);
send(data_socket, listado.c_str(), listado.size(), 0);
fprintf(fd, "250 Requested file action successful.\n");
pclose(file);
close(data_socket);
}
}
else {
fprintf(fd, "502 Command not implemented.\n"); fflush(fd);
printf("Comando : %s %s\n", command, arg);
printf("Error interno del servidor\n");
}
}
