870d4d43b7a9dad5dc005fd78d7aaceaecf99d10
[squirrelmail.git] / src / login.php
1 <?php
2
3 /**
4 * login.php -- simple login screen
5 *
6 * This a simple login screen. Some housekeeping is done to clean
7 * cookies and find language.
8 *
9 * @copyright &copy; 1999-2006 The SquirrelMail Project Team
10 * @license http://opensource.org/licenses/gpl-license.php GNU Public License
11 * @version $Id$
12 * @package squirrelmail
13 */
14
15 // reduces the files included in init.php
16 $sInitLocation = 'login';
17
18 /**
19 * Include the SquirrelMail initialization file.
20 */
21 require('../include/init.php');
22
23
24 /* SquirrelMail required files. */
25 require_once(SM_PATH . 'functions/imap_general.php');
26 require_once(SM_PATH . 'functions/forms.php');
27
28 /**
29 * $squirrelmail_language is set by a cookie when the user selects
30 * language and logs out
31 */
32 set_up_language($squirrelmail_language, TRUE, TRUE);
33
34 /**
35 * In case the last session was not terminated properly, make sure
36 * we get a new one, but make sure we preserve session_expired_*
37 */
38 /**
39 * PHP bug. http://bugs.php.net/11643 (warning, spammed bug tracker) and
40 * http://bugs.php.net/13834
41 * SID constant is not destroyed in PHP 4.1.2, 4.2.3 and maybe other
42 * versions. Produces warning on login page. Bug should be fixed only in 4.3.0
43 */
44 if ( !empty($_SESSION['session_expired_post']) && !empty($_SESSION['session_expired_location']) ) {
45 $sep = $_SESSION['session_expired_post'];
46 $sel = $_SESSION['session_expired_location'];
47
48 sqsession_destroy();
49
50 sqsession_is_active();
51 $_SESSION=array();
52 sqsession_register($sep, 'session_expired_post');
53 sqsession_register($sel, 'session_expired_location');
54 } else {
55 sqsession_destroy();
56 @sqsession_is_active();
57 $_SESSION=array();
58 }
59
60 /**
61 * This detects if the IMAP server has logins disabled, and if so,
62 * squelches the display of the login form and puts up a message
63 * explaining the situation.
64 */
65 if($imap_auth_mech == 'login') {
66 /**
67 * detect disabled login, only when imapServerAddress contains
68 * server address and not mapping. See sqimap_get_user_server()
69 */
70 if (substr($imapServerAddress, 0, 4) != "map:") {
71 $imap = sqimap_create_stream($imapServerAddress, $imapPort, $use_imap_tls);
72 $logindisabled = sqimap_capability($imap,'LOGINDISABLED');
73 sqimap_logout($imap);
74 if ($logindisabled) {
75 $string = _("The IMAP server is reporting that plain text logins are disabled.").'<br />'.
76 _("Using CRAM-MD5 or DIGEST-MD5 authentication instead may work.").'<br />';
77 if (!$use_imap_tls) {
78 $string .= _("Also, the use of TLS may allow SquirrelMail to login.").'<br />';
79 }
80 $string .= _("Please contact your system administrator and report this error.");
81 error_box($string);
82 // display footer (closes html tags) and stop script execution
83 $oTemplate->display('footer.tpl');
84 exit;
85 }
86 }
87 }
88
89 do_hook('login_cookie');
90
91 $loginname_value = (sqGetGlobalVar('loginname', $loginname) ? htmlspecialchars($loginname) : '');
92
93 /* Output the javascript onload function. */
94 $header = "<script type=\"text/javascript\">\n" .
95 "<!--\n".
96 " function squirrelmail_loginpage_onload() {\n".
97 " var textElements = 0;\n".
98 " for (i = 0; i < document.forms[0].elements.length; i++) {\n".
99 " if (document.forms[0].elements[i].type == \"text\" || document.forms[0].elements[i].type == \"password\") {\n".
100 " textElements++;\n".
101 " if (textElements == " . (isset($loginname) ? 2 : 1) . ") {\n".
102 " document.forms[0].elements[i].focus();\n".
103 " break;\n".
104 " }\n".
105 " }\n".
106 " }\n".
107 " }\n".
108 "// -->\n".
109 "</script>\n";
110
111 if (@file_exists($theme[$theme_default]['PATH']))
112 @include ($theme[$theme_default]['PATH']);
113
114 if (! isset($color) || ! is_array($color)) {
115 // Add default color theme, if theme loading fails
116 $color = array();
117 $color[0] = '#dcdcdc'; /* light gray TitleBar */
118 $color[1] = '#800000'; /* red */
119 $color[2] = '#cc0000'; /* light red Warning/Error Messages */
120 $color[4] = '#ffffff'; /* white Normal Background */
121 $color[7] = '#0000cc'; /* blue Links */
122 $color[8] = '#000000'; /* black Normal text */
123 }
124 /**
125 * send out all the cookies
126 */
127 sqsetcookieflush();
128
129 displayHtmlHeader( "$org_name - " . _("Login"), $header, FALSE );
130
131
132 /* If they don't have a logo, don't bother.. */
133 $logo_str = '';
134 if (isset($org_logo) && $org_logo) {
135 /* Display width and height like good little people */
136 $width_and_height = '';
137 if (isset($org_logo_width) && is_numeric($org_logo_width) &&
138 $org_logo_width>0) {
139 $width_and_height = "width=\"$org_logo_width\" ";
140 }
141 if (isset($org_logo_height) && is_numeric($org_logo_height) &&
142 $org_logo_height>0) {
143 $width_and_height .= "height=\"$org_logo_height\" ";
144 }
145
146 $logo_str = '<img src="'.$org_logo.'" ' .
147 'alt="'. sprintf(_("%s Logo"), $org_name).'" ' .
148 $width_and_height .
149 'class="sqm_loginImage" /><br />'."\n";
150 }
151
152 $sm_attribute_str = '';
153 if (isset($hide_sm_attributions) && !$hide_sm_attributions) {
154 $sm_attribute_str = _("SquirrelMail Webmail Application")."<br />\n" .
155 _("By the SquirrelMail Project Team")."<br />\n";
156 }
157
158 $username_form_name = 'login_username';
159 $password_form_name = 'secretkey';
160
161 if(sqgetGlobalVar('mailto', $mailto)) {
162 $rcptaddress = addHidden('mailto', $mailto);
163 } else {
164 $rcptaddress = '';
165 }
166
167 $password_field = addPwField($password_form_name).
168 addHidden('js_autodetect_results', SMPREF_JS_OFF).
169 $rcptaddress .
170 addHidden('just_logged_in', '1');
171
172 session_write_close();
173
174 $oTemplate->assign('logo_str', $logo_str);
175 $oTemplate->assign('sm_attribute_str', $sm_attribute_str);
176 $oTemplate->assign('org_name_str', sprintf (_("%s Login"), $org_name));
177 $oTemplate->assign('login_field', addInput($username_form_name, $loginname_value));
178 $oTemplate->assign('password_field', $password_field);
179 $oTemplate->assign('submit_field', addSubmit(_("Login")));
180
181 $oTemplate->display('login.tpl');
182
183 // Turn off delayed error handling to make sure all errors are dumped.
184 #$oErrorHandler->delayedErrors(false);
185
186 #trigger_error('login');
187 $oTemplate->display('footer.tpl');
188 ?>