/*
Copyright (C) 2003-2004 Douglas Thain and the University of Wisconsin
Copyright (C) 2005- The University of Notre Dame
This software is distributed under the GNU General Public License.
See the file COPYING for details.
*/

#include "ftp_lite.h"
#include "stringtools.h"

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <termios.h>
#include <alloca.h>

static int setecho( int fd, int onoff )
{
	struct termios term;
	if(tcgetattr(fd,&term)<0) return 0;
	if(onoff) {
		term.c_lflag |= ECHO;
	} else {
		term.c_lflag &= ~(ECHO);
	}
	if(tcsetattr(fd,TCSANOW,&term)<0) return 0;
	return 1;
}

static int do_getline( const char *prompt, char *buffer, int length, int echo )
{
	int fd;
	char * result;
	FILE * stream;

	fd = open("/dev/tty",O_RDWR);
	if(fd<0) return 0;

	if(!echo) {
		if(!setecho(fd,0)) {
			close(fd);
			return 0;
		}
	}

	stream = fdopen(fd,"r+");
	if(!stream) {
		if(!echo) {
			setecho(fd,1);
		}
		close(fd);
		return 0;
	}

	fprintf(stream,"%s",prompt);
	fflush(stream);

	result = fgets(buffer,length,stream);

	string_chomp(buffer);

	if(!echo) {
		fprintf(stream,"\n");
		fflush(stream);
		setecho(fd,1);
	}

	fclose(stream);

	return result!=0;
}

int ftp_lite_login( const char *service, char *name, int namelen, char *pass, int passlen )
{
	char *prompt;

	prompt = alloca(strlen(service)+10);
	if(!prompt) return 0;

	sprintf(prompt,"%s login: ",service);

	return do_getline(prompt,name,namelen,1) && do_getline("password: ",pass,passlen,0);
	
}
