1 files changed, 232 insertions, 0 deletions

diff --git a/core/opie-login/passworddialogimpl.cpp b/core/opie-login/passworddialogimpl.cpp
new file mode 100644
index 0000000..aeb7516
--- a/dev/null
+++ b/core/opie-login/passworddialogimpl.cpp
@@ -0,0 +1,232 @@
+/*
+               =.            This file is part of the OPIE Project
+             .=l.            Copyright (c)  2004 Holger Hans Peter Freyther <zecke@handhelds.org>
+           .>+-=
+ _;:,     .>    :=|.         This file is free software; you can
+.> <`_,   >  .   <=          redistribute it and/or modify it under
+:`=1 )Y*s>-.--   :           the terms of the GNU General Public
+.="- .-=="i,     .._         License as published by the Free Software
+ - .   .-<_>     .<>         Foundation; either version 2 of the License,
+     ._= =}       :          or (at your option) any later version.
+    .%`+i>       _;_.
+    .i_,=:_.      -<s.       This file is distributed in the hope that
+     +  .  -:.       =       it will be useful, but WITHOUT ANY WARRANTY;
+    : ..    .:,     . . .    without even the implied warranty of
+    =_        +     =;=|`    MERCHANTABILITY or FITNESS FOR A
+  _.=:.       :    :=>`:     PARTICULAR PURPOSE. See the GNU General
+..}^=.=       =       ;      Public License for more details.
+++=   -.     .`     .:
+ :     =  ...= . :.=-        You should have received a copy of the GNU
+ -.   .:....=;==+<;          General Public License along with this file;
+  -_. . .   )=.  =           see the file COPYING. If not, write to the
+    --        :-=`           Free Software Foundation, Inc.,
+                             59 Temple Place - Suite 330,
+                             Boston, MA 02111-1307, USA.
+
+*/
+
+
+#include <qlayout.h>
+#include <qlabel.h>
+#include <qlineedit.h>
+#include <qvalidator.h>
+#include <qmessagebox.h>
+#include <qhbox.h>
+#include <qtoolbutton.h>
+
+#include <sys/types.h>
+#include <pwd.h>
+#include <shadow.h>
+#include <stdio.h>
+#include <time.h>
+#include <unistd.h>
+
+
+#include "passworddialogimpl.h"
+
+
+// This function is taken from 'busybox'.
+static int i64c(int i) {
+    if (i <= 0)
+        return ('.');
+    if (i == 1)
+        return ('/');
+    if (i >= 2 && i < 12)
+        return ('0' - 2 + i);
+    if (i >= 12 && i < 38)
+        return ('A' - 12 + i);
+    if (i >= 38 && i < 63)
+        return ('a' - 38 + i);
+    return ('z');
+}
+
+// This function is taken from 'busybox'.
+static char *crypt_make_salt() {
+    time_t now;
+    static unsigned long x;
+    static char result[3];
+
+    ::time(&now);
+    x += now + getpid() + clock();
+    result[0] = i64c(((x >> 18) ^ (x >> 6)) & 077);
+    result[1] = i64c(((x >> 12) ^ x) & 077);
+    result[2] = '\0';
+    return result;
+}
+
+/*
+ * Modal dialog to force root password. It is quite hard as it only leave
+ * when a password is set.
+ * Also it prevalidates the password...
+ */
+PasswordDialogImpl::PasswordDialogImpl( QWidget* parent )
+    : PasswordDialog( parent, 0, true ), m_isSet( PasswordDialogImpl::needDialog() ) {
+}
+
+PasswordDialogImpl::~PasswordDialogImpl() {
+    /* qt does the stuff for us */
+}
+
+void PasswordDialogImpl::done(int res) {
+    m_isSet = true;
+
+    /*
+     * The user hit 'Ok' see if we can safe the file
+     * if not an error will be raised and m_isSet altered.
+     * On cancel we will see if it is now ok...
+     */
+    if ( res == Accepted )
+        writePassword();
+    else if(PasswordDialogImpl::needDialog() ) {
+        switch( QMessageBox::warning(this,tr("Trying to leave without password set") ,
+                                     tr("<qt>No password was set. This could lead to you not beeing"
+                                        "able to remotely connect to your machine."
+                                        "Do you want to continue not setting a password?</qt>" ),
+                                     QMessageBox::Ok, QMessageBox::Cancel ) ) {
+        case QMessageBox::Cancel:
+            m_isSet = false;
+            break;
+        case  QMessageBox::Ok:
+        default:
+            break;
+        }
+
+    }
+
+    if(m_isSet)
+        PasswordDialog::done( res );
+}
+
+/*
+ * Lets see if we can write either shadow
+ *
+ */
+/**
+ * CRYPT the password and then tries to write it either to the shadow password
+ * or  to the plain /etc/passwd
+ */
+void PasswordDialogImpl::writePassword() {
+    /*
+     * Check if both texts are the same
+     */
+    if ( m_pass->text() != m_confirm->text() )
+        return error( tr("Passwords don't match"),
+                      tr("<qt>The two passwords don't match. Please try again.</qt>") );
+
+
+    /*
+     * Now crypt the password so we can write it later
+     */
+    char* password = ::crypt( m_pass->text().latin1(), crypt_make_salt() );
+
+    if ( !password )
+        return error( tr("Password not legal" ),
+                      tr("<qt>The entered password is not a valid password."
+                         "Please try entering a valid password.</qt>" ) );
+
+    /* rewind and rewrite the password file */
+    ::setpwent();
+
+    FILE* file = ::fopen( "/etc/passwd.new", "w" );
+    struct passwd* pass;
+    while ( (pass = ::getpwent()) != 0l ) {
+        /* no  shadow password support */
+        if ( pass->pw_uid == 0  )
+            pass->pw_passwd = password;
+
+        ::putpwent( pass, file );
+    }
+
+    ::fclose( file );
+    ::endpwent();
+    ::unlink("/etc/passwd");
+    ::rename("/etc/passwd.new","/etc/passwd" );
+
+    /* should be done now */
+#ifdef  OPIE_LOGIN_SHADOW_PW
+    #error "Can't write Shadow Passwords fixme"
+#endif
+}
+
+/**
+ * Raise an error. Delete input and set the focus after showing
+ * the error to the user
+ */
+void PasswordDialogImpl::error( const QString& caption, const QString& text ) {
+    m_isSet = false;
+    QMessageBox::critical(this,caption, text,
+                          QMessageBox::Ok, QMessageBox::NoButton );
+
+    m_pass->setText("");
+    m_pass->setFocus();
+
+    m_confirm->setText("");
+}
+
+void PasswordDialogImpl::slotToggleEcho( bool b ) {
+    m_pass->   setEchoMode( b ? QLineEdit::Normal : QLineEdit::Password );
+    m_confirm->setEchoMode( b ? QLineEdit::Normal : QLineEdit::Password );
+}
+
+/////////////////////////
+/// static functions
+///
+
+/**
+ * Ask whether or not we need to show the dialog. It returns true if
+ * no root password is set so that the user will be able to set one.
+ */
+bool PasswordDialogImpl::needDialog() {
+   /*
+    * This can cope with no password and shadow passwords
+    * Let us go through the user database until we find  'root' and then
+    * see if it is 'shadow' and see if shadow is empty or see if the password is empty
+    */
+    bool need = false;
+    struct passwd *pwd;
+    ::setpwent();
+
+    while((pwd = ::getpwent() ) ) {
+        /* found root */
+        if( pwd->pw_uid == 0 ) {
+            QString str = QString::fromLatin1(pwd->pw_passwd );
+
+            /*
+             * If str is really empty it is passwordless anyway...
+             * else it is shadow based
+             */
+            if(str.isEmpty() )
+                need = true;
+            else if ( str == '*' || str == 'x' )
+#ifdef OPIE_LOGIN_SHADOW_PW
+                need =  QString::fromLatin1( ::getspnam( pwd->pw_name )->sp_pwdp ).isEmpty();
+#else
+            ;
+#endif
+            break;
+        }
+    }
+    ::endpwent();
+
+    return need;
+}