int DOopen()
{
char *ent;
int s;
if(linkopen) {
printf("Use \"CLOSE\" to close the connection first.\n");
return(0);
}
if(cmdargc < 2)
readline("Host: ", host, sizeof(host));
else
strncpy(host, cmdargv[1], sizeof(host));
ent = malloc(strlen(host)+13);
strcpy(ent, "/dev/tcp/");
strcat(ent, host);
strcat(ent, ":21");
s = open(ent, O_RDWR);
if(s < 0) {
perror("ftp: connect");
return(s);
}
ftpcomm_fd = s;
fpcommin = fdopen(ftpcomm_fd, "r");
fpcommout = fdopen(ftpcomm_fd, "w");
s = DOgetreply();
if(s < 0) {
fclose(fpcommin);
fclose(fpcommout);
close(ftpcomm_fd);
return(s);
}
if(s != 220) {
fclose(fpcommin);
fclose(fpcommout);
close(ftpcomm_fd);
return(0);
}
linkopen = 1;
return(s);
}
int DOopen()
{
nwio_tcpconf_t tcpconf;
nwio_tcpcl_t tcpcopt;
char *tcp_device;
tcpport_t port;
int s;
struct hostent *hp;
struct servent *servent;
if(linkopen) {
printf("Use \"CLOSE\" to close the connection first.\n");
return(0);
}
if(cmdargc < 2) {
if(readline("Host: ", host, sizeof(host)) < 0)
return(-1);
} else
strncpy(host, cmdargv[1], sizeof(host));
if((servent = getservbyname("ftp", "tcp")) == (struct servent *)NULL) {
fprintf(stderr, "ftp: Could not find ftp tcp service\n");
port = htons(21);
} else
port = (tcpport_t)servent->s_port;
hp = gethostbyname(host);
if(hp == (struct hostent *)NULL) {
hostip = (ipaddr_t)0;
printf("Unresolved host %s\n", host);
return(0);
} else
memcpy((char *) &hostip, (char *) hp->h_addr, hp->h_length);
/* This HACK allows the server to establish data connections correctly */
/* when using the loopback device to talk to ourselves */
#ifdef __NBSD_LIBC
if((hostip & ntohl(0xFF000000)) == inet_addr("127.0.0.0"))
#else
if((hostip & NTOHL(0xFF000000)) == inet_addr("127.0.0.0"))
#endif
hostip = myip;
if((tcp_device = getenv("TCP_DEVICE")) == NULL)
tcp_device = "/dev/tcp";
if((ftpcomm_fd = open(tcp_device, O_RDWR)) < 0) {
perror("ftp: open error on tcp device");
return(-1);
}
tcpconf.nwtc_flags = NWTC_LP_SEL | NWTC_SET_RA | NWTC_SET_RP;
tcpconf.nwtc_remaddr = hostip;
tcpconf.nwtc_remport = port;
s = ioctl(ftpcomm_fd, NWIOSTCPCONF, &tcpconf);
if(s < 0) {
perror("ftp: ioctl error on NWIOSTCPCONF");
close(ftpcomm_fd);
return(-1);
}
tcpcopt.nwtcl_flags = 0;
s = ioctl(ftpcomm_fd, NWIOTCPCONN, &tcpcopt);
if(s < 0) {
perror("ftp: ioctl error on NWIOTCPCONN");
close(ftpcomm_fd);
return(-1);
}
s = ioctl(ftpcomm_fd, NWIOGTCPCONF, &tcpconf);
if(s < 0) {
perror("ftp: ioctl error on NWIOGTCPCONF");
close(ftpcomm_fd);
return(-1);
}
s = DOgetreply();
if(s < 0) {
close(ftpcomm_fd);
return(s);
}
if(s != 220) {
close(ftpcomm_fd);
return(0);
}
linkopen = 1;
return(s);
}
