LDAPAccountManager/lam/lib/modules/imapAccess.inc

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<?php
/*
$Id$
This code is part of LDAP Account Manager (http://www.ldap-account-manager.org/)
Copyright (C) 2010 - 2011 Pavel Pozdniak
2010 - 2011 Roland Gruber
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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 program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/**
* Manages mailboxes on an IMAP server.
*
* @package modules
* @author Pavel Pozdniak
* @author Roland Gruber
*/
/**
* Manages mailboxes on an IMAP server.
*
* @package modules
* @author Pavel Pozdniak
* @author Roland Gruber
*/
class imapAccess extends baseModule {
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private $profileQuotaLimit = null;
/**
* Returns meta data that is interpreted by parent class
*
* @return array array with meta data
*
* @see baseModule::get_metaData()
*/
function get_metaData() {
$return = array();
// manages user accounts
$return["account_types"] = array("user");
// alias name
$return["alias"] = _("Mailbox");
// module dependencies
$return['dependencies'] = array('depends' => array('inetOrgPerson'), 'conflicts' => array());
// managed object classes
$return['objectClasses'] = array();
// managed attributes
$return['attributes'] = array();
// PHP extensions
$return['extensions'] = array('imap');
// icon
$return['icon'] = 'mailBig.png';
// help
$return['help'] = array(
'ImapServerAddress' => array(
"Headline" => _("Server address"),
"Text" => _("Address of IMAP server (e.g. mail.example.org).")),
'ImapServerEncryptionProtocol' => array(
"Headline" => _("Encryption protocol"),
"Text" => _("Encryption protocol for connecting to IMAP server. LAM requires an encrypted connection.")),
'ImapValidateServerCert' => array(
"Headline" => _("Validate server certificate"),
"Text" => _("This option allows you to disable the certificate check of your IMAP server certificate. Disabling the certificate check is not recommended.")),
'ImapAdmin' => array(
"Headline" => _("IMAP admin user"),
"Text" => _("The login name of your IMAP user who has rights to create/delete mailboxes.")),
'ImapAdminPasswordSelect' => array(
"Headline" => _("IMAP password input"),
"Text" => _("Choose the way how to provide the IMAP admin password. You can use the same password as for the LAM login or LAM will ask you for a password when it is required.")),
'ImapAdminPassword_Sess' => array(
"Headline" => _("Password of IMAP admin user"),
"Text" => _("The password of your IMAP admin user. The login name for the IMAP admin user is stored in the LAM server profile.")),
'ImapUserPrefix' => array(
"Headline" => _("Prefix for mailboxes"),
"Text" => _("Some IMAP servers store mailboxes with a prefix (e.g. \"user\" for Cyrus which results in \"user.username\").")),
'ImapMailDomain' => array(
"Headline" => _("Mail domain(s)"),
"Text" => _("Please enter a comma separated list of domain names (e.g. \"company.com,example.com\"). LAM will only manage mailboxes from these domains.")),
'ImapUserNameAttr' => array(
"Headline" => _("User name attribute"),
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"Text" => _("Please choose the attribute to get the IMAP user name. The default is \"mail\" but you can also use \"uid\".")),
'MailAddress' => array(
"Headline" => _("Mailbox"),
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"Text" => _("This mailbox will be created/deleted.")),
'ImapUserQuotaLimit' => array(
"Headline" => _("Quota"),
"Text" => _("Please enter the quota limit of this mailbox in kilobytes.")),
);
// configuration settings
$configContainer = new htmlTable();
$configServer = new htmlTableExtendedInputField(_('Server address'), 'ImapAccess_ImapServerAddress', '', 'ImapServerAddress');
$configServer->setRequired(true);
$configContainer->addElement($configServer, true);
$configContainer->addElement(new htmlTableExtendedSelect('ImapAccess_ImapServerEncriptionProtocol', array('TLS', 'SSL'), array('TLS'), _("Encryption protocol"), 'ImapServerEncryptionProtocol'), true);
$configCertValidate = new htmlTableExtendedSelect('ImapAccess_ImapValidateServerCert', array(_('Yes') => 'validate-cert', _('No') => 'novalidate-cert'), array('validate-cert'), _("Validate server certificate"), 'ImapValidateServerCert');
$configCertValidate->setHasDescriptiveElements(true);
$configContainer->addElement($configCertValidate, true);
$configUser = new htmlTableExtendedInputField(_('IMAP admin user'), 'ImapAccess_ImapAdmin', '', 'ImapAdmin');
$configUser->setRequired(true);
$configContainer->addElement($configUser, true);
$configPasswordType = new htmlTableExtendedSelect('ImapAccess_ImapAdminPasswordSelect', array(_('LAM user password') => 'lam_user_pass', _('Ask') => 'ask_pass'), array('ask_pass'), _("IMAP password input"), 'ImapAdminPasswordSelect');
$configPasswordType->setHasDescriptiveElements(true);
$configContainer->addElement($configPasswordType, true);
$configContainer->addElement(new htmlTableExtendedInputField(_('Prefix for mailboxes'), 'ImapAccess_ImapUserPrefix', '', 'ImapUserPrefix'), true);
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$mailDomainsInput = new htmlTableExtendedInputField(_('Mail domain(s)'), 'ImapAccess_ImapDomain', '', 'ImapMailDomain');
$mailDomainsInput->setRequired(true);
$configContainer->addElement($mailDomainsInput, true);
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$configUserName = new htmlTableExtendedSelect('ImapAccess_UserNameAttribute', array('mail', 'uid'), array('mail'), _("User name attribute"), 'ImapUserNameAttr');
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$configContainer->addElement($configUserName, true);
$return['config_options']['all'] = $configContainer;
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// configuration checks
$return['config_checks']['all']['ImapAccess_ImapServerAddress'] = array (
'type' => 'ext_preg',
'regex' => 'DNSname',
'required' => true,
'required_message' => $this->messages['config'][0],
'error_message' => $this->messages['config'][0]);
$return['config_checks']['all']['ImapAccess_ImapDomain'] = array (
'type' => 'regex_i',
'regex' => '[\\*a-z0-9\\._-]+(,[a-z0-9\\._-]+)*',
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'required' => true,
'required_message' => $this->messages['config'][1],
'error_message' => $this->messages['config'][1]);
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// profile options
$profileContainer = new htmlTable();
$profileContainer->addElement(new htmlTableExtendedInputField(_('Quota'), 'ImapAccess_QuotaLimit', null, 'ImapUserQuotaLimit'), true);
$return['profile_options'] = $profileContainer;
$return['profile_checks']['ImapAccess_QuotaLimit'] = array(
'type' => 'ext_preg',
'regex' => 'digit',
'error_message' => $this->messages['managemailbox'][8]);
return $return;
}
/**
* This function fills the error message array with messages
*/
function load_Messages() {
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$this->messages['config'][0] = array('ERROR', _('Please enter a valid server name where the mailboxes reside.'));
$this->messages['config'][1] = array('ERROR', _('Please enter a correct list of valid mail domains.'));
$this->messages['managemailbox'][0] = array('ERROR', _('Unable to change ACL on IMAP server for mailbox deletion.'));
$this->messages['managemailbox'][1] = array('ERROR', _('Unable to delete mailbox from IMAP server.'));
$this->messages['managemailbox'][2] = array('ERROR', _('Unable to create mailbox on IMAP server.'));
$this->messages['managemailbox'][3] = array('ERROR', _('Unable to locate mailbox on IMAP.'));
$this->messages['managemailbox'][4] = array('ERROR', _('Your IMAP domain(s) and email address domain do not match.'));
$this->messages['managemailbox'][5] = array('ERROR', _('Invalid password for IMAP admin or other problem occured.'));
$this->messages['managemailbox'][6] = array('WARN', _('Your LAM login password was not accepted by the IMAP server.'));
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$this->messages['managemailbox'][7] = array('ERROR', _('Cannot update quota.'));
$this->messages['managemailbox'][8] = array('ERROR', _('Wrong quota format. Quota must be numeric.'));
}
/**
* Returns the HTML meta data for the main account page.
*
* @return array HTML meta data
*/
function display_html_attributes() {
$return = new htmlTable();
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if (!checkIfWriteAccessIsAllowed()) {
return $return;
}
$prefix = $this->getMailboxPrefix();
$email = '';
$attrsPersonal = $this->getAccountContainer()->getAccountModule('inetOrgPerson')->getAttributes();
$email = $attrsPersonal['mail'][0];
if ($email == '') {
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$return->addElement(new htmlStatusMessage('INFO', _("Please enter an email address on this page: %s"), '', array($this->getAccountContainer()->getAccountModule('inetOrgPerson')->get_alias())));
return $return;
}
$email_domain = substr(strstr($email, '@'), 1);
// extract user name from email address
if (!isset($this->moduleSettings['ImapAccess_UserNameAttribute'][0]) || $this->moduleSettings['ImapAccess_UserNameAttribute'][0] == 'mail') {
$email_parts = explode('@', $email, 2);
$email_username = array_shift($email_parts);
}
// extract user name from Unix user name (might be in inetOrgPerson or posixAccount module)
else {
if ($this->getAccountContainer()->getAccountModule('posixAccount') != null) {
$attrsUnix = $this->getAccountContainer()->getAccountModule('posixAccount')->getAttributes();
$email_username = $attrsUnix['uid'][0];
}
else {
$email_username = $attrsPersonal['uid'][0];
}
}
$imap_admin_password = $this->getAdminPassword(); // check for password for fall back mechanism
if (!isset($_SESSION['imapAdmPass']) && !isset($imap_admin_password)) {
return $this->display_html_password();
}
$return->addElement(new htmlOutputText(_('Email address')));
$return->addElement(new htmlOutputText($email), true);
$imap_server_address = $this->getServerAddress();
$imap_admin_user = $this->moduleSettings['ImapAccess_ImapAdmin'][0];
$imap_admin_password = $this->getAdminPassword();
$mbox = @imap_open("{" . $imap_server_address . "}", $imap_admin_user, $imap_admin_password, OP_HALFOPEN, 1);
if (!$mbox) {
return $this->display_html_password();
}
$return->addElement(new htmlOutputText(_('Mailbox')));
$return->addElement(new htmlOutputText($prefix . "." . $email_username));
$return->addElement(new htmlHelpLink('MailAddress'), true);
$return->addElement(new htmlSpacer(null, '10px'), true);
$is_mailbox_exist = false; //default is false
$list = imap_list($mbox, "{" . $imap_server_address . "}", $prefix . "." . $email_username);
if (is_array($list) && sizeof($list) == 1) {
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$this->renderQuotasForMailbox($return, $mbox, $prefix . "." . $email_username);
$mailboxMessage = new htmlOutputText(_("Mailbox already exists on IMAP server."));
$mailboxMessage->colspan = 3;
$return->addElement($mailboxMessage, true);
$return->addElement(new htmlSpacer(null, '10px'), true);
$return->addElement(new htmlButton('deleteMailbox', _('Delete mailbox')));
}
else {
$mailboxMessage = new htmlOutputText(_("Mailbox does not exist on IMAP server."));
$mailboxMessage->colspan = 3;
$return->addElement($mailboxMessage, true);
$return->addElement(new htmlSpacer(null, '10px'), true);
$createButton = new htmlButton('createMailbox', _('Create mailbox'));
$message = '';
if ($this->isWrongDomain($email_domain)) {
$createButton->setIsEnabled(false);
$message = '<< ' . $this->messages['managemailbox'][4][1];
}
$return->addElement($createButton);
$return->addElement(new htmlOutputText($message));
}
imap_close($mbox);
return $return;
}
/**
* Returns the HTML meta data for the password page.
*
* @return array HTML meta data
*/
function display_html_password() {
$return = new htmlTable();
if($this->moduleSettings['ImapAccess_ImapAdminPasswordSelect'][0] == "lam_user_pass"){
$message = $this->messages['managemailbox'][6];
$messageElement = new htmlStatusMessage($message[0], $message[1]);
$messageElement->colspan = 3;
$return->addElement($messageElement);
$return->addElement(new htmlSpacer(null, '10px'), true);
}
$passwordInput = new htmlTableExtendedInputField(_("Password of IMAP admin user"), 'ImapAdminPassword', '', 'ImapAdminPassword_Sess');
$passwordInput->setIsPassword(true);
$passwordInput->setRequired(true);
$return->addElement($passwordInput, true);
$return->addElement(new htmlSpacer(null, '10px'), true);
$return->addElement(new htmlButton('enterPasswordButton', _('Ok')));
return $return;
}
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/**
* Display the mailbox quota.
*
* @param htmlTable $htmlTable structure that contained information to be displayed
* @param stream $mbox stream to open IMAP session
* @return htmlTable table with added information about user quotas or controls to add quota
*/
function renderQuotasForMailbox($htmlTable, $mbox, $username) {
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if (($this->profileQuotaLimit != null) && ($this->profileQuotaLimit != '')) {
@imap_set_quota($mbox, $username, $this->profileQuotaLimit);
$this->profileQuotaLimit = null;
}
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$quota_values = @imap_get_quota($mbox, $username);
imap_errors();
if (is_array($quota_values) && (sizeof($quota_values) > 0)) {
if (isset($quota_values['STORAGE']) && is_array($quota_values['STORAGE'])) {
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$quotaLimit = $quota_values['STORAGE']['limit'];
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$htmlTable->addElement(new htmlOutputText(_("Current usage (kB)")));
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$htmlTable->addElement(new htmlOutputText($quota_values['STORAGE']['usage']), true);
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$quotaLimitInput = new htmlTableExtendedInputField(_("Quota limit (kB)"), 'ImapUserQuotaLimit', $quotaLimit, 'ImapUserQuotaLimit');
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$htmlTable->addElement($quotaLimitInput, false);
$htmlTable->addElement(new htmlSpacer('10px', null), false);
$htmlTable->addElement(new htmlButton('updateQuota', _('Update quota')), true);
$htmlTable->addElement(new htmlSpacer(null, '10px'), true);
}
}
else {
$quotaLimit = "";
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$quotaLimitInput = new htmlTableExtendedInputField(_("Quota limit (kB)"), 'ImapUserQuotaLimit', $quotaLimit, 'ImapUserQuotaLimit');
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$htmlTable->addElement($quotaLimitInput, false);
$htmlTable->addElement(new htmlSpacer('10px', null), false);
$htmlTable->addElement(new htmlButton('updateQuota', _('Update quota')), true);
$htmlTable->addElement(new htmlSpacer(null, '10px'), true);
}
return $htmlTable;
}
/**
* Processes user input of the primary module page.
* It checks if all input values are correct and updates the associated LDAP attributes.
*
* @return array list of info/error messages
*/
function process_attributes() {
$errors = array();
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if (!checkIfWriteAccessIsAllowed()) {
return $errors;
}
$prefix = $this->getMailboxPrefix();
$imap_server_address = $this->getServerAddress();
$imap_admin_user = $this->moduleSettings['ImapAccess_ImapAdmin'][0];
if (isset($_POST['ImapAdminPassword'])) {
$errors = $this->doLogin();
}
$imap_admin_password = $this->getAdminPassword();
if ($imap_admin_password) {
$mbox = @imap_open("{" . $imap_server_address . "}", $imap_admin_user, $imap_admin_password, OP_HALFOPEN, 1);
}
if ($mbox) {
$attrsPersonal = $this->getAccountContainer()->getAccountModule('inetOrgPerson')->getAttributes();
$email = $attrsPersonal['mail'][0];
$email_domain = substr(strstr($email, '@'), 1);
// extract user name from email address
if (!isset($this->moduleSettings['ImapAccess_UserNameAttribute'][0]) || $this->moduleSettings['ImapAccess_UserNameAttribute'][0] == 'mail') {
$email_parts = explode('@', $email, 2);
$email_username = array_shift($email_parts);
}
// extract user name from Unix user name (might be in inetOrgPerson or posixAccount module)
else {
if ($this->getAccountContainer()->getAccountModule('posixAccount') != null) {
$attrsUnix = $this->getAccountContainer()->getAccountModule('posixAccount')->getAttributes();
$email_username = $attrsUnix['uid'][0];
}
else {
$email_username = $attrsPersonal['uid'][0];
}
}
if (isset($_POST['deleteMailbox'])) {
if ($this->isWrongDomain($email_domain)) {
$errors[] = $this->messages['managemailbox'][4];
}
else {
if (!imap_setacl($mbox, $prefix . "." . $email_username, $this->moduleSettings['ImapAccess_ImapAdmin'][0], "c")) {
$errors[] = $this->messages['managemailbox'][0];
}
$delete_mailbox_arg = "{" . $imap_server_address . "}" . $prefix . "." . $email_username;
if (!@imap_deletemailbox($mbox, $delete_mailbox_arg)) {
$errors[] = $this->messages['managemailbox'][1];
}
}
}
if (isset($_POST['createMailbox'])) {
if ($this->isWrongDomain($email_domain)) {
$errors[] = $this->messages['managemailbox'][4];
}
else {
$create_mailbox_arg = "{" . $imap_server_address . "}" . $prefix . "." . $email_username;
if (imap_createmailbox($mbox, imap_utf7_encode($create_mailbox_arg))) {
$list = imap_list($mbox, "{" . $imap_server_address . "}", $prefix . "." . $email_username);
if (is_array($list) && sizeof($list) == 1) {
}
else {
$errors[] = $this->messages['managemailbox'][3];
}
}
else {
$errors[] = $this->messages['managemailbox'][2];
}
}
}
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if (isset($_POST['updateQuota'])) {
if ($this->isWrongDomain($email_domain)) {
$errors[] = $this->messages['managemailbox'][4];
}
else {
if (!isset($_POST['ImapUserQuotaLimit']) || ($_POST['ImapUserQuotaLimit'] == '')) {
/* if (!imap_set_quota($mbox, $prefix . "." . $email_username, -1)) {
$message = $this->messages['managemailbox'][7];
$message[] = imap_last_error();
$errors[] = $message;
}*/
}
elseif (isset($_POST['ImapUserQuotaLimit']) && ($_POST['ImapUserQuotaLimit'] != '') && get_preg($_POST['ImapUserQuotaLimit'], 'digit')){
if (!imap_set_quota($mbox, $prefix . "." . $email_username, $_POST['ImapUserQuotaLimit'])) {
$message = $this->messages['managemailbox'][7];
$message[] = imap_last_error();
$errors[] = $message;
}
}
else {
$errors[] = $this->messages['managemailbox'][8];
}
}
}
imap_close($mbox);
}
// Return error-messages
return $errors;
}
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/**
* Loads the values of an account profile into internal variables.
*
* @param array $profile hash array with profile values (identifier => value)
*/
function load_profile($profile) {
// profile mappings in meta data
parent::load_profile($profile);
if (isset($profile['ImapAccess_QuotaLimit'][0]) && $profile['ImapAccess_QuotaLimit'][0] != '') {
$this->profileQuotaLimit = $profile['ImapAccess_QuotaLimit'][0];
}
}
/**
* Returns the admin password.
*
* @return String password
*/
function getAdminPassword() {
//perform admin password
$imap_admin_password = null; //default value is null, it can be changed during the work
if (isset($_SESSION['imapAdmPass'])) {
$imap_admin_password = $_SESSION['ldap']->decrypt($_SESSION['imapAdmPass']);
}
elseif (isset($this->moduleSettings['ImapAccess_ImapAdminPasswordSelect'][0]) && ($this->moduleSettings['ImapAccess_ImapAdminPasswordSelect'][0] == "lam_user_pass")) {
$credentials = $_SESSION['ldap']->decrypt_login();
$imap_admin_password = $credentials[1];
}
return $imap_admin_password;
}
/**
* Checks the password given by user and save it as session parameter.
*
* @return array list of error messages
*/
function doLogin() {
$errors = array();
$imap_server_address = $this->getServerAddress();
$imap_admin_user = $this->moduleSettings['ImapAccess_ImapAdmin'][0];
if (isset($_POST['ImapAdminPassword']) && $_POST['ImapAdminPassword'] != "") {
$imap_admin_password = $_POST['ImapAdminPassword'];
$mbox = @imap_open("{" . $imap_server_address . "}", $imap_admin_user, $imap_admin_password, OP_HALFOPEN, 1);
if ($mbox) {
$_SESSION['imapAdmPass'] = $_SESSION['ldap']->encrypt($_POST['ImapAdminPassword']);
@imap_close($mbox);
}
else {
$error = $this->messages['managemailbox'][5];
$error[] = imap_last_error();
$errors[] = $error;
}
}
return $errors;
}
/**
* This function returns the IMAP server address including encryption options.
*
* @return String server address
*/
function getServerAddress() {
$imap_encryption_protocol = $this->moduleSettings['ImapAccess_ImapServerEncriptionProtocol'][0];
if (strrpos($this->moduleSettings['ImapAccess_ImapServerAddress'][0], ":")) {
$imap_port_number = substr(strstr($this->moduleSettings['ImapAccess_ImapServerAddress'][0], ':'), 1);
$imap_server_name = array_shift(explode(':', $this->moduleSettings['ImapAccess_ImapServerAddress'][0], 2));
}
else {
$imap_server_name = $this->moduleSettings['ImapAccess_ImapServerAddress'][0];
if (strcmp($imap_encryption_protocol, "TLS") == 0) {
$imap_port_number = 143;
}
else {
$imap_port_number = 993;
}
}
if (isset($this->moduleSettings['ImapAccess_ImapValidateServerCert'][0]) && ($this->moduleSettings['ImapAccess_ImapValidateServerCert'][0] == 'novalidate-cert')) {
$validate_opt = "novalidate-cert";
}
else {
$validate_opt = "validate-cert";
}
$imap_server_address = $imap_server_name . ":" . $imap_port_number . "/" . $imap_encryption_protocol . "/" . $validate_opt;
return $imap_server_address;
}
/**
* This function returns the prefix for mailboxes.
* If no prefix was given during configuration then "user" will be used (default for Cyrus).
*
* @return String prefix
*/
function getMailboxPrefix() {
if (!isset($this->moduleSettings['ImapAccess_ImapUserPrefix'][0]) || ($this->moduleSettings['ImapAccess_ImapUserPrefix'][0] == '')) {
return "user";
}
else {
return $this->moduleSettings['ImapAccess_ImapUserPrefix'][0];
}
}
/**
* This function checks if the domain of the mailbox is not in the list of domains listed in the configuration.
* If it is in the list then it returns false, otherwise returns true. If the list of domains is not set then it returns true.
*
* @return boolean true if domains match
*/
function isWrongDomain($email_domain) {
if (isset($this->moduleSettings['ImapAccess_ImapDomain'][0])) {
$domain_list_string = $this->moduleSettings['ImapAccess_ImapDomain'][0];
if ($domain_list_string == '*') {
return false;
}
$domains_array = explode(",", $domain_list_string);
if ((sizeof($domains_array) == 0) || in_array($email_domain, $domains_array)) {
return false;
}
}
else {
return false;
}
return true;
}
}
?>