userinput_user.c

/*
 * Copyright (c) 2008 Apple Computer, Inc.  All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 *
 * The contents of this file constitute Original Code as defined in and
 * are subject to the Apple Public Source License Version 1.1 (the
 * "License").  You may not use this file except in compliance with the
 * License.  Please obtain a copy of the License at
 * http://www.apple.com/publicsource and read it before using this file.
 *
 * This Original Code and all software distributed under the License are
 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License.
 *
 * @APPLE_LICENSE_HEADER_END@
 */

#include "userinput_user.h"
#include "preferences.h"
#include <curses.h>
#include <pwd.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

static void
user_completion(void *tinst, struct user_input_state *s)
{
	struct passwd *pwd;

	if (!strlen(s->buf)) {
		/* The user entered an empty string, so they don't want a user. */
		top_prefs_set_user(s->buf);
		user_input_set_state(NULL);
		return;
	}

	pwd = getpwnam(s->buf);

	if (NULL == pwd) {
		user_input_set_error_state("invalid user");
		endpwent();
		return;
	}

	top_prefs_set_user(s->buf);
	top_prefs_set_user_uid(pwd->pw_uid);

	endpwent();

	user_input_set_state(NULL);
}

static void
user_draw(void *tinst, struct user_input_state *s, WINDOW *win, int row, int column)
{
	const char *curuser = top_prefs_get_user();

	char display[60];

	if (-1 == snprintf(display, sizeof(display), "user [%s]: %s\n", curuser ? curuser : "", s->buf))
		return;

	mvwaddstr(win, row, column, display);
}

struct user_input_state top_user_input_user_state
		= { .offset = 0, .completion = user_completion, .draw = user_draw };