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/*
* Copyright (C) 2001 Philip Blundell <philb@gnu.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <pwd.h>
#include <sys/types.h>
#include <shadow.h>
#include <crypt.h>
#include <unistd.h>
#include <stdlib.h>
#include <gtk/gtk.h>
static const char *current_username;
static GtkWidget *label_result;
static void
set_username(GtkWidget *widget,
gpointer data)
{
current_username = (const char *)data;
}
static void
slurp_passwd(GtkWidget *menu)
{
struct passwd *pw;
while (pw = getpwent(), pw != NULL)
{
const char *name = g_strdup(pw->pw_name);
GtkWidget *item = gtk_menu_item_new_with_label(name);
gtk_signal_connect(GTK_OBJECT(item), "activate", GTK_SIGNAL_FUNC(set_username), (gpointer)name);
gtk_menu_append(GTK_MENU(menu), item);
if (current_username == NULL)
current_username = name;
}
}
static void
enter_callback(GtkWidget *widget,
GtkWidget *entry)
{
gchar *pwstr;
struct passwd *pwe;
struct spwd *spe;
char *p;
if (current_username == NULL)
return;
pwstr = gtk_entry_get_text(GTK_ENTRY(entry));
gtk_entry_set_text(GTK_ENTRY(entry), "");
pwe = getpwnam(current_username);
if (pwe == NULL)
goto login_incorrect;
spe = getspnam(current_username);
if (spe)
pwe->pw_passwd = spe->sp_pwdp;
p = crypt(pwstr, pwe->pw_passwd);
if (strcmp(p, pwe->pw_passwd))
goto login_incorrect;
setuid(pwe->pw_uid);
setgid(pwe->pw_gid);
setenv("HOME", pwe->pw_dir, 1);
chdir(pwe->pw_dir);
execl("/etc/X11/Xsession", "/etc/X11/Xsession", NULL);
return;
login_incorrect:
gtk_label_set_text(GTK_LABEL(label_result), "Login incorrect");
}
int
main(int argc, char *argv[])
{
GtkWidget *window, *label_login, *label_password;
GtkWidget *option, *entry, *menu;
GtkWidget *table;
gtk_init(&argc, &argv);
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
label_login = gtk_label_new("login:");
label_password = gtk_label_new("password:");
label_result = gtk_label_new("");
gtk_misc_set_alignment(GTK_MISC(label_login), 1.00f, 0.5f);
gtk_misc_set_alignment(GTK_MISC(label_password), 1.00f, 0.5f);
entry = gtk_entry_new();
gtk_entry_set_visibility(GTK_ENTRY(entry), FALSE);
gtk_entry_set_max_length(GTK_ENTRY(entry), 16);
option = gtk_option_menu_new();
menu = gtk_menu_new();
slurp_passwd(menu);
gtk_option_menu_set_menu(GTK_OPTION_MENU(option), menu);
gtk_signal_connect(GTK_OBJECT(entry), "activate",
GTK_SIGNAL_FUNC(enter_callback), entry);
table = gtk_table_new(2, 3, FALSE);
gtk_widget_set_usize(option, -1, 32);
gtk_widget_set_usize(label_result, -1, 32);
gtk_table_attach(GTK_TABLE(table), label_login, 0, 1, 0, 1, 0, 0, 5, 2);
gtk_table_attach(GTK_TABLE(table), label_password, 0, 1, 1, 2, 0, 0, 5, 2);
gtk_table_attach(GTK_TABLE(table), option, 1, 2, 0, 1, GTK_EXPAND | GTK_FILL, 0, 5, 2);
gtk_table_attach(GTK_TABLE(table), entry, 1, 2, 1, 2, GTK_EXPAND | GTK_FILL, 0, 5, 2);
gtk_table_attach(GTK_TABLE(table), label_result, 1, 2, 2, 3, GTK_EXPAND | GTK_FILL, 0, 5, 2);
gtk_container_add(GTK_CONTAINER(window), table);
gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_CENTER);
gtk_widget_show_all(window);
gtk_widget_grab_focus(entry);
gtk_main();
return 0;
}
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