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1 | <?php |
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2 | |
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3 | /** |
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4 | * Prevents users from reposting their form data after a successful logout. |
5 | * |
6 | * Derived from webmail.php by Ralf Kraudelt <kraude@wiwi.uni-rostock.de> |
7 | * |
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8 | * @copyright 1999-2014 The SquirrelMail Project Team |
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9 | * @license http://opensource.org/licenses/gpl-license.php GNU Public License |
10 | * @version $Id$ |
11 | * @package squirrelmail |
12 | */ |
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13 | |
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14 | /** This is the redirect page */ |
15 | define('PAGE_NAME', 'redirect'); |
16 | |
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17 | /** |
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18 | * Include the SquirrelMail initialization file. |
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19 | */ |
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20 | require('../include/init.php'); |
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21 | |
22 | /* SquirrelMail required files. */ |
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23 | require_once(SM_PATH . 'functions/imap_general.php'); |
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24 | require_once(SM_PATH . 'functions/strings.php'); |
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25 | |
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26 | // Disable browser caching |
27 | // |
28 | header('Cache-Control: no-cache, no-store, must-revalidate, max-age=0'); |
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29 | header('Pragma: no-cache'); |
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30 | header('Expires: Sat, 1 Jan 2000 00:00:00 GMT'); |
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31 | $location = get_location(); |
32 | |
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33 | // session_set_cookie_params (0, $base_uri); |
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34 | |
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35 | sqsession_unregister ('user_is_logged_in'); |
36 | sqsession_register ($base_uri, 'base_uri'); |
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37 | |
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38 | /* get globals we me need */ |
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39 | sqGetGlobalVar('login_username', $login_username); |
40 | sqGetGlobalVar('secretkey', $secretkey); |
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41 | if(!sqGetGlobalVar('squirrelmail_language', $squirrelmail_language) || $squirrelmail_language == '') { |
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42 | $squirrelmail_language = $squirrelmail_default_language; |
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43 | } |
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44 | if (!sqgetGlobalVar('mailtodata', $mailtodata)) { |
45 | $mailtodata = ''; |
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46 | } |
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47 | |
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48 | /* end of get globals */ |
49 | |
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50 | set_up_language($squirrelmail_language, true); |
51 | /* Refresh the language cookie. */ |
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52 | sqsetcookie('squirrelmail_language', $squirrelmail_language, time()+2592000, |
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53 | $base_uri); |
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54 | |
55 | if (!isset($login_username)) { |
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56 | logout_error( _("You must be logged in to access this page.") ); |
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57 | exit; |
58 | } |
59 | |
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60 | do_hook('login_before', $null); |
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61 | |
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62 | $onetimepad = OneTimePadCreate(strlen($secretkey)); |
63 | $key = OneTimePadEncrypt($secretkey, $onetimepad); |
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64 | |
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65 | /* remove redundant spaces */ |
66 | $login_username = trim($login_username); |
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67 | |
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68 | /* Case-normalise username if so desired */ |
69 | if ($force_username_lowercase) { |
70 | $login_username = strtolower($login_username); |
71 | } |
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72 | |
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73 | /* Verify that username and password are correct. */ |
74 | $imapConnection = sqimap_login($login_username, $key, $imapServerAddress, $imapPort, 0); |
75 | /* From now on we are logged it. If the login failed then sqimap_login handles it */ |
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76 | |
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77 | /** |
78 | * Regenerate session id to make sure that authenticated session uses |
79 | * different ID than one used before user authenticated. This is a |
80 | * countermeasure against session fixation attacks. |
81 | * NB: session_regenerate_id() was added in PHP 4.3.2 (and new session |
82 | * cookie is only sent out in this call as of PHP 4.3.3), but PHP 4 |
83 | * is not vulnerable to session fixation problems in SquirrelMail |
84 | * because it prioritizes $base_uri subdirectory cookies differently |
85 | * than PHP 5, which is otherwise vulnerable. If we really want to, |
86 | * we could define our own session_regenerate_id() when one does not |
87 | * exist, but there seems to be no reason to do so. |
88 | */ |
89 | sqsession_is_active(); |
90 | if (function_exists('session_regenerate_id')) { |
91 | session_regenerate_id(); |
92 | } |
93 | |
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94 | /** |
95 | * The cookie part. session_start and session_regenerate_session normally set |
96 | * their own cookie. SquirrelMail sets another cookie which overwites the |
97 | * php cookies. The sqsetcookie function sets the cookie by using the header |
98 | * function which gives us full control how the cookie is set. We do that |
99 | * to add the HttpOnly cookie attribute which blocks javascript access on |
100 | * IE6 SP1. |
101 | */ |
102 | sqsetcookie(session_name(),session_id(),false,$base_uri); |
103 | sqsetcookie('key', $key, false, $base_uri); |
104 | |
105 | sqsession_register($onetimepad, 'onetimepad'); |
106 | |
107 | $sqimap_capabilities = sqimap_capability($imapConnection); |
108 | |
109 | /* Server side sorting control */ |
110 | if (isset($sqimap_capabilities['SORT']) && $sqimap_capabilities['SORT'] == true && |
111 | isset($disable_server_sort) && $disable_server_sort) { |
112 | unset($sqimap_capabilities['SORT']); |
113 | } |
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114 | |
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115 | /* Thread sort control */ |
116 | if (isset($sqimap_capabilities['THREAD']) && $sqimap_capabilities['THREAD'] == true && |
117 | isset($disable_thread_sort) && $disable_thread_sort) { |
118 | unset($sqimap_capabilities['THREAD']); |
119 | } |
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120 | |
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121 | sqsession_register($sqimap_capabilities, 'sqimap_capabilities'); |
122 | $delimiter = sqimap_get_delimiter ($imapConnection); |
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123 | |
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124 | if (isset($sqimap_capabilities['NAMESPACE']) && $sqimap_capabilities['NAMESPACE'] == true) { |
125 | $namespace = sqimap_get_namespace($imapConnection); |
126 | sqsession_register($namespace, 'sqimap_namespace'); |
127 | } |
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128 | |
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129 | sqimap_logout($imapConnection); |
130 | sqsession_register($delimiter, 'delimiter'); |
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131 | |
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132 | $username = $login_username; |
133 | sqsession_register ($username, 'username'); |
134 | do_hook('login_verified', $null); |
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135 | |
136 | /* Set the login variables. */ |
137 | $user_is_logged_in = true; |
138 | $just_logged_in = true; |
139 | |
140 | /* And register with them with the session. */ |
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141 | sqsession_register ($user_is_logged_in, 'user_is_logged_in'); |
142 | sqsession_register ($just_logged_in, 'just_logged_in'); |
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143 | |
144 | /* parse the accepted content-types of the client */ |
145 | $attachment_common_types = array(); |
146 | $attachment_common_types_parsed = array(); |
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147 | sqsession_register($attachment_common_types, 'attachment_common_types'); |
148 | sqsession_register($attachment_common_types_parsed, 'attachment_common_types_parsed'); |
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149 | |
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150 | if ( sqgetGlobalVar('HTTP_ACCEPT', $http_accept, SQ_SERVER) && |
151 | !isset($attachment_common_types_parsed[$http_accept]) ) { |
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152 | attachment_common_parse($http_accept); |
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153 | } |
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154 | |
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155 | // having just logged in, need to synch the template file cache |
156 | // so the right template set is displayed (per user prefs) |
157 | require(SM_PATH . 'include/load_prefs.php'); |
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158 | global $sTemplateID; |
159 | Template::cache_template_file_hierarchy($sTemplateID, TRUE); |
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160 | |
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161 | /* Complete autodetection of Javascript. */ |
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162 | checkForJavascript(); |
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163 | |
164 | /* Compute the URL to forward the user to. */ |
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165 | $redirect_url = $location . '/webmail.php'; |
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166 | |
167 | if ( sqgetGlobalVar('session_expired_location', $session_expired_location, SQ_SESSION) ) { |
168 | sqsession_unregister('session_expired_location'); |
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169 | if ( $session_expired_location == 'compose' ) { |
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170 | $compose_new_win = getPref($data_dir, $username, 'compose_new_win', 0); |
171 | if ($compose_new_win) { |
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172 | // do not prefix $location here because $session_expired_location is set to the PAGE_NAME |
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173 | // of the last page |
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174 | $redirect_url = $location . '/' . $session_expired_location . '.php'; |
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175 | } else { |
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176 | $redirect_url = $location . '/webmail.php?right_frame=' . urlencode($session_expired_location . '.php'); |
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177 | } |
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178 | } else if ($session_expired_location != 'webmail' |
179 | && $session_expired_location != 'left_main') { |
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180 | $redirect_url = $location . '/webmail.php?right_frame=' . urlencode($session_expired_location . '.php'); |
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181 | } |
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182 | unset($session_expired_location); |
183 | } |
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184 | |
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185 | if($mailtodata != '') { |
186 | $redirect_url = $location . '/webmail.php?right_frame=compose.php&mailtodata='; |
187 | $redirect_url .= urlencode($mailtodata); |
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188 | } |
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189 | |
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190 | /* Write session data and send them off to the appropriate page. */ |
191 | session_write_close(); |
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192 | header("Location: $redirect_url"); |
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193 | exit; |
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194 | |
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195 | /* --------------------- end main ----------------------- */ |
196 | |
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197 | function attachment_common_parse($str) { |
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198 | global $attachment_common_types, $attachment_common_types_parsed; |
199 | |
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200 | /* |
201 | * Replace ", " with "," and explode on that as Mozilla 1.x seems to |
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202 | * use "," to seperate whilst IE, and earlier versions of Mozilla use |
203 | * ", " to seperate |
204 | */ |
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205 | |
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206 | $str = str_replace( ', ' , ',' , $str ); |
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207 | $types = explode(',', $str); |
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208 | |
209 | foreach ($types as $val) { |
210 | // Ignore the ";q=1.0" stuff |
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211 | if (strpos($val, ';') !== false) { |
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212 | $val = substr($val, 0, strpos($val, ';')); |
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213 | } |
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214 | if (! isset($attachment_common_types[$val])) { |
215 | $attachment_common_types[$val] = true; |
216 | } |
217 | } |
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218 | sqsession_register($attachment_common_types, 'attachment_common_types'); |
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219 | |
220 | /* mark as parsed */ |
221 | $attachment_common_types_parsed[$str] = true; |
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222 | } |