static int maybe_abort_out(FILE *in, Socket *out)
{
unsigned int i = ftp_sigints();
ftp_set_close_handler();
ftp->ti.finished = true;
if(ftp->ti.interrupted)
i++;
if(i > 0 || ferror(in) || sock_error_out(out)) {
if(ferror(in)) {
ftp_err(_("read error: %s\n"), strerror(errno));
ftp->ti.ioerror = true;
}
else if (sock_error_out(out)) {
ftp_err(_("write error: %s\n"), strerror(errno));
ftp->ti.ioerror = true;
}
return ftp_abort(out);
}
return 0;
}
/* sends an FTP command on the control channel
* returns reply status code on success or -1 on error
*/
int ftp_cmd(const char *cmd, ...)
{
va_list ap;
int resp;
bool recon = false;
if(!sock_connected(ftp->ctrl)) {
ftp_err(_("No control connection\n"));
ftp->code = ctNone;
ftp->fullcode = -1;
return -1;
}
ftp_set_abort_handler();
ugly:
va_start(ap, cmd);
sock_krb_vprintf(ftp->ctrl, cmd, ap);
sock_printf(ftp->ctrl, "\r\n");
sock_flush(ftp->ctrl);
va_end(ap);
if (sock_error_out(ftp->ctrl)) {
ftp_err(_("error writing command"));
ftp_err(" (");
va_start(ap, cmd);
vfprintf(stderr, cmd, ap);
va_end(ap);
va_start(ap, cmd);
ftp_vtrace(cmd, ap);
va_end(ap);
ftp_err(")\n");
ftp->code = ctNone;
ftp->fullcode = -1;
return -1;
}
va_start(ap, cmd);
ftp_print_cmd(cmd, ap);
va_end(ap);
resp = ftp_read_reply();
ftp_set_close_handler();
if(resp == 421) { /* server is closing control connection! */
ftp_err(_("Server closed control connection\n"));
if(gvAutoReconnect && ftp_loggedin() && strcasecmp(cmd, "QUIT") != 0) {
if(recon) {
ftp_err(_("Reconnect failed\n"));
} else {
ftp_err(_("Automatic reconnect...\n"));
ftp_reopen();
recon = true;
goto ugly;
}
} else {
/* ftp_close();*/
ftp->fullcode = 421;
ftp->code = 4;
return -1;
}
}
return resp;
}
