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1 <?php
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2 /**
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3 +-------------------------------------------------------------------------+
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4 | Roundcube Webmail IMAP Client |
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5 | Version 1.3.3 |
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6 | |
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7 | Copyright (C) 2005-2017, The Roundcube Dev Team |
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8 | |
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9 | This program is free software: you can redistribute it and/or modify |
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10 | it under the terms of the GNU General Public License (with exceptions |
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11 | for skins & plugins) as published by the Free Software Foundation, |
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12 | either version 3 of the License, or (at your option) any later version. |
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13 | |
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14 | This file forms part of the Roundcube Webmail Software for which the |
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15 | following exception is added: Plugins and Skins which merely make |
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16 | function calls to the Roundcube Webmail Software, and for that purpose |
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17 | include it by reference shall not be considered modifications of |
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18 | the software. |
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19 | |
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20 | If you wish to use this file in another project or create a modified |
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21 | version that will not be part of the Roundcube Webmail Software, you |
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22 | may remove the exception above and use this source code under the |
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23 | original version of the license. |
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24 | |
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25 | This program is distributed in the hope that it will be useful, |
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26 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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27 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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28 | GNU General Public License for more details. |
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29 | |
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30 | You should have received a copy of the GNU General Public License |
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31 | along with this program. If not, see http://www.gnu.org/licenses/. |
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32 | |
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33 +-------------------------------------------------------------------------+
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34 | Author: Thomas Bruederli <roundcube@gmail.com> |
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35 | Author: Aleksander Machniak <alec@alec.pl> |
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36 +-------------------------------------------------------------------------+
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37 */
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38
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39 // include environment
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40 require_once 'program/include/iniset.php';
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41
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42 // init application, start session, init output class, etc.
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43 $RCMAIL = rcmail::get_instance(0, $GLOBALS['env']);
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44
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45 // Make the whole PHP output non-cacheable (#1487797)
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46 $RCMAIL->output->nocacheing_headers();
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47 $RCMAIL->output->common_headers();
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48
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49 // turn on output buffering
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50 ob_start();
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51
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52 // check if config files had errors
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53 if ($err_str = $RCMAIL->config->get_error()) {
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54 rcmail::raise_error(array(
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55 'code' => 601,
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56 'type' => 'php',
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57 'message' => $err_str), false, true);
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58 }
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59
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60 // check DB connections and exit on failure
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61 if ($err_str = $RCMAIL->db->is_error()) {
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62 rcmail::raise_error(array(
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63 'code' => 603,
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64 'type' => 'db',
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65 'message' => $err_str), false, true);
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66 }
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67
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68 // error steps
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69 if ($RCMAIL->action == 'error' && !empty($_GET['_code'])) {
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70 rcmail::raise_error(array('code' => hexdec($_GET['_code'])), false, true);
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71 }
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72
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73 // check if https is required (for login) and redirect if necessary
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74 if (empty($_SESSION['user_id']) && ($force_https = $RCMAIL->config->get('force_https', false))) {
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75 // force_https can be true, <hostname>, <hostname>:<port>, <port>
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76 if (!is_bool($force_https)) {
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77 list($host, $port) = explode(':', $force_https);
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78
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79 if (is_numeric($host) && empty($port)) {
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80 $port = $host;
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81 $host = '';
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82 }
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83 }
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84
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85 if (!rcube_utils::https_check($port ?: 443)) {
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86 if (empty($host)) {
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87 $host = preg_replace('/:[0-9]+$/', '', $_SERVER['HTTP_HOST']);
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88 }
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89 if ($port && $port != 443) {
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90 $host .= ':' . $port;
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91 }
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92
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93 header('Location: https://' . $host . $_SERVER['REQUEST_URI']);
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94 exit;
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95 }
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96 }
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97
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98 // trigger startup plugin hook
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99 $startup = $RCMAIL->plugins->exec_hook('startup', array('task' => $RCMAIL->task, 'action' => $RCMAIL->action));
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100 $RCMAIL->set_task($startup['task']);
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101 $RCMAIL->action = $startup['action'];
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102
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103 // try to log in
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104 if ($RCMAIL->task == 'login' && $RCMAIL->action == 'login') {
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105 $request_valid = $_SESSION['temp'] && $RCMAIL->check_request();
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106 $pass_charset = $RCMAIL->config->get('password_charset', 'ISO-8859-1');
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107
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108 // purge the session in case of new login when a session already exists
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109 $RCMAIL->kill_session();
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110
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111 $auth = $RCMAIL->plugins->exec_hook('authenticate', array(
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112 'host' => $RCMAIL->autoselect_host(),
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113 'user' => trim(rcube_utils::get_input_value('_user', rcube_utils::INPUT_POST)),
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114 'pass' => rcube_utils::get_input_value('_pass', rcube_utils::INPUT_POST, true, $pass_charset),
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115 'valid' => $request_valid,
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116 'cookiecheck' => true,
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117 ));
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118
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119 // Login
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120 if ($auth['valid'] && !$auth['abort']
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121 && $RCMAIL->login($auth['user'], $auth['pass'], $auth['host'], $auth['cookiecheck'])
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122 ) {
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123 // create new session ID, don't destroy the current session
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124 // it was destroyed already by $RCMAIL->kill_session() above
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125 $RCMAIL->session->remove('temp');
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126 $RCMAIL->session->regenerate_id(false);
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127
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128 // send auth cookie if necessary
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129 $RCMAIL->session->set_auth_cookie();
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130
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131 // log successful login
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132 $RCMAIL->log_login();
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133
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134 // restore original request parameters
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135 $query = array();
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136 if ($url = rcube_utils::get_input_value('_url', rcube_utils::INPUT_POST)) {
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137 parse_str($url, $query);
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138
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139 // prevent endless looping on login page
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140 if ($query['_task'] == 'login') {
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141 unset($query['_task']);
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142 }
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143
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144 // prevent redirect to compose with specified ID (#1488226)
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145 if ($query['_action'] == 'compose' && !empty($query['_id'])) {
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146 $query = array('_action' => 'compose');
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147 }
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148 }
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149
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150 // allow plugins to control the redirect url after login success
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151 $redir = $RCMAIL->plugins->exec_hook('login_after', $query + array('_task' => 'mail'));
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152 unset($redir['abort'], $redir['_err']);
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153
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154 // send redirect
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155 $OUTPUT->redirect($redir, 0, true);
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156 }
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157 else {
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158 if (!$auth['valid']) {
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159 $error_code = rcmail::ERROR_INVALID_REQUEST;
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160 }
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161 else {
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162 $error_code = is_numeric($auth['error']) ? $auth['error'] : $RCMAIL->login_error();
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163 }
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164
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165 $error_labels = array(
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166 rcmail::ERROR_STORAGE => 'storageerror',
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167 rcmail::ERROR_COOKIES_DISABLED => 'cookiesdisabled',
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168 rcmail::ERROR_INVALID_REQUEST => 'invalidrequest',
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169 rcmail::ERROR_INVALID_HOST => 'invalidhost',
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170 rcmail::ERROR_RATE_LIMIT => 'accountlocked',
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171 );
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172
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173 $error_message = !empty($auth['error']) && !is_numeric($auth['error']) ? $auth['error'] : ($error_labels[$error_code] ?: 'loginfailed');
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174
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175 $OUTPUT->show_message($error_message, 'warning');
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176
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177 // log failed login
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178 $RCMAIL->log_login($auth['user'], true, $error_code);
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179
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180 $RCMAIL->plugins->exec_hook('login_failed', array(
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181 'code' => $error_code, 'host' => $auth['host'], 'user' => $auth['user']));
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182
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183 $RCMAIL->kill_session();
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184 }
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185 }
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186
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187 // end session
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188 else if ($RCMAIL->task == 'logout' && isset($_SESSION['user_id'])) {
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189 $RCMAIL->request_security_check($mode = rcube_utils::INPUT_GET);
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190
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191 $userdata = array(
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192 'user' => $_SESSION['username'],
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193 'host' => $_SESSION['storage_host'],
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194 'lang' => $RCMAIL->user->language,
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195 );
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196
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197 $OUTPUT->show_message('loggedout');
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198
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199 $RCMAIL->logout_actions();
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200 $RCMAIL->kill_session();
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201 $RCMAIL->plugins->exec_hook('logout_after', $userdata);
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202 }
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203
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204 // check session and auth cookie
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205 else if ($RCMAIL->task != 'login' && $_SESSION['user_id']) {
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206 if (!$RCMAIL->session->check_auth()) {
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207 $RCMAIL->kill_session();
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208 $session_error = true;
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209 }
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210 }
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211
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212 // not logged in -> show login page
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213 if (empty($RCMAIL->user->ID)) {
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214 // log session failures
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215 $task = rcube_utils::get_input_value('_task', rcube_utils::INPUT_GPC);
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216
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217 if ($task && !in_array($task, array('login','logout'))
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218 && !$session_error && ($sess_id = $_COOKIE[ini_get('session.name')])
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219 ) {
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220 $RCMAIL->session->log("Aborted session $sess_id; no valid session data found");
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221 $session_error = true;
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222 }
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223
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224 if ($session_error || $_REQUEST['_err'] == 'session') {
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225 $OUTPUT->show_message('sessionerror', 'error', null, true, -1);
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226 }
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227
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228 if ($OUTPUT->ajax_call || $OUTPUT->get_env('framed')) {
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229 $OUTPUT->command('session_error', $RCMAIL->url(array('_err' => 'session')));
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230 $OUTPUT->send('iframe');
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231 }
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232
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233 // check if installer is still active
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234 if ($RCMAIL->config->get('enable_installer') && is_readable('./installer/index.php')) {
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235 $OUTPUT->add_footer(html::div(array('style' => "background:#ef9398; border:2px solid #dc5757; padding:0.5em; margin:2em auto; width:50em"),
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236 html::tag('h2', array('style' => "margin-top:0.2em"), "Installer script is still accessible") .
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237 html::p(null, "The install script of your Roundcube installation is still stored in its default location!") .
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238 html::p(null, "Please <b>remove</b> the whole <tt>installer</tt> folder from the Roundcube directory because
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239 these files may expose sensitive configuration data like server passwords and encryption keys
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240 to the public. Make sure you cannot access the <a href=\"./installer/\">installer script</a> from your browser.")
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241 ));
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242 }
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243
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244 $plugin = $RCMAIL->plugins->exec_hook('unauthenticated', array('task' => 'login', 'error' => $session_error));
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245
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246 $RCMAIL->set_task($plugin['task']);
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247
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248 $OUTPUT->send($plugin['task']);
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249 }
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250 else {
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251 // CSRF prevention
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252 $RCMAIL->request_security_check();
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253
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254 // check access to disabled actions
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255 $disabled_actions = (array) $RCMAIL->config->get('disabled_actions');
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256 if (in_array($RCMAIL->task . '.' . ($RCMAIL->action ?: 'index'), $disabled_actions)) {
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257 rcube::raise_error(array(
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258 'code' => 404, 'type' => 'php',
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259 'message' => "Action disabled"), true, true);
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260 }
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261 }
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262
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263 // we're ready, user is authenticated and the request is safe
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264 $plugin = $RCMAIL->plugins->exec_hook('ready', array('task' => $RCMAIL->task, 'action' => $RCMAIL->action));
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265 $RCMAIL->set_task($plugin['task']);
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266 $RCMAIL->action = $plugin['action'];
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267
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268 // handle special actions
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269 if ($RCMAIL->action == 'keep-alive') {
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270 $OUTPUT->reset();
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271 $RCMAIL->plugins->exec_hook('keep_alive', array());
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272 $OUTPUT->send();
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273 }
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274 else if ($RCMAIL->action == 'save-pref') {
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275 include INSTALL_PATH . 'program/steps/utils/save_pref.inc';
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276 }
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277
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278
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279 // include task specific functions
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280 if (is_file($incfile = INSTALL_PATH . 'program/steps/'.$RCMAIL->task.'/func.inc')) {
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281 include_once $incfile;
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282 }
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283
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284 // allow 5 "redirects" to another action
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285 $redirects = 0; $incstep = null;
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286 while ($redirects < 5) {
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287 // execute a plugin action
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288 if (preg_match('/^plugin\./', $RCMAIL->action)) {
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289 $RCMAIL->plugins->exec_action($RCMAIL->action);
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290 break;
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291 }
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292 // execute action registered to a plugin task
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293 else if ($RCMAIL->plugins->is_plugin_task($RCMAIL->task)) {
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294 if (!$RCMAIL->action) $RCMAIL->action = 'index';
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295 $RCMAIL->plugins->exec_action($RCMAIL->task.'.'.$RCMAIL->action);
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296 break;
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297 }
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298 // try to include the step file
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299 else if (($stepfile = $RCMAIL->get_action_file())
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300 && is_file($incfile = INSTALL_PATH . 'program/steps/'.$RCMAIL->task.'/'.$stepfile)
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301 ) {
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302 // include action file only once (in case it don't exit)
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303 include_once $incfile;
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304 $redirects++;
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305 }
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306 else {
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307 break;
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308 }
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309 }
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310
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311 if ($RCMAIL->action == 'refresh') {
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312 $RCMAIL->plugins->exec_hook('refresh', array('last' => intval(rcube_utils::get_input_value('_last', rcube_utils::INPUT_GPC))));
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313 }
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314
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315 // parse main template (default)
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316 $OUTPUT->send($RCMAIL->task);
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317
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318 // if we arrive here, something went wrong
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319 rcmail::raise_error(array(
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320 'code' => 404,
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321 'type' => 'php',
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322 'line' => __LINE__,
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323 'file' => __FILE__,
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324 'message' => "Invalid request"), true, true);
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