<?
# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
# DataDivisions, Build 1.0, 12/11/2003                                      #
# FileName: funcLogin.php                                                   #
# File Description:                                                         #
#   Provides functions required for a user to login to application (back-   #
#   end, middle and front-end)                                              #
#                                                                           #
# +-----------------------------------------------------------------------+ #
# | DataDivisions - Website Statistic Visualization Software              | #
# | Copyright (c) 2003, Brian Willison                                    | #
# +-----------------------------------------------------------------------+ #
# | The contents of this file are subject to the GNU General Public       | #
# | License version 2 (June 1991). This file and all its contents (incl.  | #
# | functions, methods, etc.) are free for general use within any         | #
# | community. This software is distributed with the intent to allow      | #
# | developers the opportunity to copy, manipulate and revamp this        | #
# | application in part or whole for best use cases.                      | #
# |                                                                       | #
# | This software is distributed "AS-IS" with no warranties of any kind   | #
# | either expressed or implied.                                          | #
# |                                                                       | #
# | Please refer to the GPL license document for more information:        | #
# | (_docs/gplLicense.pdf)                                                | #
# +-----------------------------------------------------------------------+ #
# | Developer, Designer, Initial Creator:                                 | #
# | Brian Willison (hide@address.com)                       | #
# +-----------------------------------------------------------------------+ #
# | Initial Download Reference:                                           | #
# | http://datadivisions.sourceforge.net                                  | #
# +-----------------------------------------------------------------------+ #
# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #

// Function: Check Login Credentials
function checkLoginForm($_POST) {
	// Check If User Posted Any Info
	if ($_POST['username'] == "" || $_POST['password'] == "") {		// username and password submitted blank
		return "blankSubmit";
	} else {
		// Get All Db Users Info
		$dbOpen = dbConnect();
		$query = "SELECT * FROM ".dbTableUsers;
		$result = mysql_query($query);
		$numRows = mysql_num_rows($result);
		// Check For Submitted User Info
		for ($i=0; $i<$numRows; $i++) {
			$array = mysql_fetch_array($result);
			if ($array[0] == $_POST['username']) { 					// username found, so check password
				if ($array[1] == $_POST['password']) { 				// check password
					if (isset($_POST['rememberLogin']))
						setUserLoginCookie($_POST['username']);		// set username cookie with checkbox marked
					dbClose($dbOpen);
					return $_POST['username'];						// password is correct
				} else {
					dbClose($dbOpen);
					return "passwordFailed";						// password is NOT correct
				}
			}
		}
		dbClose($dbOpen);
		return "noUserInDb";										// no user in db
	}
}
// Function: Generate Login Form
function genLoginForm($errorCheck) {
global $_POST;
	genAppSmHeader(pageName);	// generate application header
?>
	<tr>
	<td></td>
	<td valign="top" colspan="3">
	<p class="header">New user? Please click <a href="<?=registerPage?>">here</a> to set up your account.
	<p>If your session has timed out or you would like to re-login to <?=appNameShort?>, please enter your login 
	credentials below.
	</td>
	<td></td>
	</tr>
	<tr>
	<td valign="top" colspan="5"><?writeSpacer(1,10);?></td>
	</tr>
<?
	if ($errorCheck != 0) {
		printf("\t<tr><td></td><td valign=\"top\" colspan=\"3\"><p class=\"error\">%s</td><td></td></tr>",genErrorMsg($errorCheck));
	}
?>
	<tr>
	<td valign="top" colspan="5"><?writeSpacer(1,10);?></td>
	</tr>
	<tr>
	<form name="login" method="post" action="<?=phpSelf?>">
	<td></td>
	<td><p align="right">Username:</td>
	<td></td>
	<td><p><input type="text" name="username" size="25" maxlength="25" value="<?if(isset($_POST['username'])){echo$_POST['username'];}?>"></td>
	<td></td>
	</tr>
	<tr>
	<td></td>
	<td><p align="right">Password:</td>
	<td></td>
	<td><p><input type="password" name="password" size="25" maxlength="10"></td>
	<td></td>
	</tr>
	<tr>
	<td></td>
	<td></td>
	<td></td>
	<td valign="top"><p class="small"><input type="checkbox" name="rememberLogin" checked>&nbsp;Remember My Login</td>
	<td></td>
	</tr>
	<tr>
	<td valign="top" colspan="5"><?writeSpacer(1,10);?></td>
	</tr>
	<tr>
	<td></td>
	<td></td>
	<td></td>
	<td valign="top"><input type="submit" name="submit" value="Submit" class="btnSubmit"></td>
	<td></td>
	</form>
	</tr>
	<tr>
	<td valign="top" colspan="5"><?writeSpacer(1,15);?></td>
	</tr>
<?
	genAppSmFooter(pageName);	// generate application footer
}
?>