PHP isadmin函数代码示例

function templates_page_setup()
{
    global $PAGE;
    global $CFG;
    if (!empty($PAGE->setupdone)) {
        return false;
        // don't run twice
    }
    $PAGE->setupdone = true;
    // leave your mark
    //
    // Populate $PAGE with links for non-module core code
    //
    if (isadmin()) {
        $PAGE->menu_top[] = array('name' => 'admin', 'html' => "<li><a href=\"" . $CFG->wwwroot . "mod/admin/\">" . __gettext("Administration") . "</a></li>");
    }
    if (logged_on) {
        $PAGE->menu_top[] = array('name' => 'userdetails', 'html' => "<li><a href=\"" . $CFG->wwwroot . "_userdetails/\">" . __gettext("Account settings") . "</a></li>");
        $PAGE->menu_top[] = array('name' => 'logoff', 'html' => "<li><a href=\"" . $CFG->wwwroot . "login/logout.php\">" . __gettext("Log off") . "</a></li>");
    }
    //
    // Give a chance to all registered modules
    //
    if ($allmods = get_list_of_plugins('mod')) {
        foreach ($allmods as $mod) {
            $mod_pagesetup = $mod . '_pagesetup';
            if (function_exists($mod_pagesetup)) {
                $mod_pagesetup();
            }
        }
    }
}

 function get_content()
 {
     global $USER;
     $isteacher = get_record('role_assignments', 'userid', $USER->id, 'roleid', '3');
     // Is the $USER assigned as Teacher, anywhere in the system?
     $iscoursecreator = get_record('role_assignments', 'userid', $USER->id, 'roleid', '2');
     // Is the $USER assigned as Course Creator, anywhere in the system?
     if ($this->content !== NULL) {
         return $this->content;
     }
     //echo "debug teacher=";print_r($isteacher);
     if (!isadmin($USER->id)) {
         if (empty($isteacher) and empty($iscoursecreator)) {
             return;
         }
     }
     if (!empty($this->instance->pinned) or $this->instance->pagetype === 'course-view') {
         // fancy html allowed only on course page and in pinned blocks for security reasons
         $filteropt = new stdClass();
         $filteropt->noclean = true;
     } else {
         $filteropt = null;
     }
     $this->content = new stdClass();
     $this->content->text = isset($this->config->text) ? format_text($this->config->text, FORMAT_HTML, $filteropt) : '';
     $this->content->footer = '';
     unset($filteropt);
     // memory footprint
     return $this->content;
 }

/**
* @param object $resource
* @uses CFG, USER
*/
function get_text_for_indexing_pdf(&$resource)
{
    global $CFG, $USER;
    // SECURITY : do not allow non admin execute anything on system !!
    if (!isadmin($USER->id)) {
        return;
    }
    // adds moodle root switch if none was defined
    if (!isset($CFG->block_search_usemoodleroot)) {
        set_config('block_search_usemoodleroot', 1);
    }
    $moodleroot = $CFG->block_search_usemoodleroot ? "{$CFG->dirroot}/" : '';
    // just call pdftotext over stdout and capture the output
    if (!empty($CFG->block_search_pdf_to_text_cmd)) {
        preg_match("/^\\S+/", $CFG->block_search_pdf_to_text_cmd, $matches);
        if (!file_exists("{$moodleroot}{$matches[0]}")) {
            mtrace('Error with pdf to text converter command : executable not found at ' . $moodleroot . $matches[0]);
        } else {
            $file = escapeshellarg($CFG->dataroot . '/' . $resource->course . '/' . $resource->reference);
            $command = trim($CFG->block_search_pdf_to_text_cmd);
            $text_converter_cmd = "{$moodleroot}{$command} {$file} -";
            $result = shell_exec($text_converter_cmd);
            if ($result) {
                return $result;
            } else {
                mtrace('Error with pdf to text converter command : execution failed for ' . $text_converter_cmd . '. Check for execution permission on pdf converter executable.');
                return '';
            }
        }
    } else {
        mtrace('Error with pdf to text converter command : command not set up. Execute once search block configuration.');
        return '';
    }
}

/**
* MS Word extractor
* @param object $resource 
* @uses CFG, USER
*/
function get_text_for_indexing_doc(&$resource)
{
    global $CFG, $USER;
    // SECURITY : do not allow non admin execute anything on system !!
    if (!isadmin($USER->id)) {
        return;
    }
    $moodleroot = @$CFG->block_search_usemoodleroot ? "{$CFG->dirroot}/" : '';
    // just call pdftotext over stdout and capture the output
    if (!empty($CFG->block_search_word_to_text_cmd)) {
        if (!file_exists("{$moodleroot}{$CFG->block_search_word_to_text_cmd}")) {
            mtrace('Error with MSWord to text converter command : exectuable not found.');
        } else {
            $file = escapeshellarg($CFG->dataroot . '/' . $resource->course . '/' . $resource->reference);
            $command = trim($CFG->block_search_word_to_text_cmd);
            $text_converter_cmd = "{$moodleroot}{$command} {$file}";
            if ($CFG->block_search_word_to_text_env) {
                putenv($CFG->block_search_word_to_text_env);
            }
            mtrace("Executing : {$text_converter_cmd}");
            $result = shell_exec($text_converter_cmd);
            if ($result) {
                return mb_convert_encoding($result, 'UTF8', 'auto');
            } else {
                mtrace('Error with MSWord to text converter command : execution failed. ');
                return '';
            }
        }
    } else {
        mtrace('Error with MSWord to text converter command : command not set up. Execute once search block configuration.');
        return '';
    }
}

/**
* Global Search Engine for Moodle
* add-on 1.8+ : Valery Fremaux [valery.fremaux@club-internet.fr] 
* 2007/08/02
*
* this is a format handler for getting text out of a proprietary binary format 
* so it can be indexed by Lucene search engine
*/
function get_text_for_indexing_pdf(&$resource)
{
    global $CFG, $USER;
    // SECURITY : do not allow non admin execute anything on system !!
    if (!isadmin($USER->id)) {
        return;
    }
    // just call pdftotext over stdout and capture the output
    if (!empty($CFG->block_search_pdf_to_text_cmd)) {
        preg_match("/^\\S+/", $CFG->block_search_pdf_to_text_cmd, $matches);
        if (!file_exists("{$CFG->dirroot}/{$matches[0]}")) {
            mtrace('Error with pdf to text converter command : exectuable not found.');
        } else {
            $file = $CFG->dataroot . '/' . $resource->course . '/' . $resource->reference;
            $text_converter_cmd = "{$CFG->dirroot}/{$CFG->block_search_pdf_to_text_cmd} {$file} -";
            $result = shell_exec($text_converter_cmd);
            if ($result) {
                return $result;
            } else {
                mtrace('Error with pdf to text converter command : execution failed.');
                return '';
            }
        }
    } else {
        mtrace('Error with pdf to text converter command : command not set up. Execute once search block configuration.');
        return '';
    }
}

 public function _initialize()
 {
     $this->base();
     if (isset($_GET['gid']) && intval($_GET['gid']) > 0) {
         $this->gid = intval($_GET['gid']);
     } elseif (isset($_POST['gid']) && intval($_POST['gid']) > 0) {
         $this->gid = intval($_POST['gid']);
     } else {
         $this->error('gid 错误');
     }
     $groupinfo = D('Group')->where('id=' . $this->gid . " AND is_del=0")->find();
     if (!$groupinfo) {
         $this->error('该群组不存在，或者被删除');
     }
     //判读权限  成员权限
     if ($groupinfo['brower_level'] == 1 && !isJoinGroup($this->uid, $this->gid)) {
         $this->error('只有成员可见');
     } elseif ($groupinfo['brower_level'] == 0 && !$this->mid) {
         $this->error('登陆会员可见');
     }
     $this->groupinfo = $groupinfo;
     $this->assign('groupinfo', $groupinfo);
     $this->assign('gid', $this->gid);
     //记录访问时间
     D('Member')->where('gid=' . $this->gid . " AND uid={$this->mid}")->setField('mtime', time());
     //判读是否是管理员
     $this->isadmin = isadmin($this->mid, $this->gid);
     $this->assign('isadmin', $this->isadmin);
     $this->setTitle($this->groupinfo['name'] . '群-');
 }

/**
 * Validate the data in passed in the configuration page
 * 
 * @param  $config - the information from the form mod.html
 * @return nothing , but returns an error if the configuration is wrong
 */
function liveclassroom_process_options(&$config)
{
    global $CFG, $USER;
    /*******
       we do the following verfication before submitting the configuration
       -The parameters sent can not be empty
       -The url of the server can not finish with a /
       -The url must start with http:// 
       -The api account has to valid
       ********/
    $config->servername = trim($config->servername);
    $config->adminusername = trim($config->adminusername);
    $config->adminpassword = trim($config->adminpassword);
    if (!isadmin($USER->id)) {
        wimba_add_log(WIMBA_ERROR, WC, get_string('wrongconfigurationURLunavailable', 'liveclassroom'));
        error(get_string('errormustbeadmin', 'liveclassroom'));
    }
    if (empty($config->servername)) {
        wimba_add_log(WIMBA_ERROR, WC, get_string('wrongconfigurationURLunavailable', 'liveclassroom'));
        error(get_string('wrongconfigurationURLunavailable', 'liveclassroom'), $_SERVER["HTTP_REFERER"]);
    } else {
        if (empty($config->adminusername)) {
            wimba_add_log(WIMBA_ERROR, WC, get_string('emptyAdminUsername', 'liveclassroom'));
            error(get_string('emptyAdminUsername', 'liveclassroom'), $_SERVER["HTTP_REFERER"]);
        } else {
            if (empty($config->adminpassword)) {
                wimba_add_log(WIMBA_ERROR, WC, get_string('emptyAdminPassword', 'liveclassroom'));
                error(get_string('emptyAdminPassword', 'liveclassroom'), $_SERVER["HTTP_REFERER"]);
            }
        }
    }
    $length = strlen($config->servername);
    if ($config->servername[$length - 1] == '/') {
        wimba_add_log(WIMBA_ERROR, WC, get_String('trailingSlash', 'liveclassroom'));
        error(get_String('trailingSlash', 'liveclassroom'), $_SERVER["HTTP_REFERER"]);
    }
    if (!preg_match('/^http:\\/\\//', $config->servername)) {
        wimba_add_log(WIMBA_ERROR, WC, get_String('trailingHttp', 'liveclassroom'));
        error(get_String('trailingHttp', 'liveclassroom'), $_SERVER["HTTP_REFERER"]);
    }
    $prefixUtil = new PrefixUtil();
    $prefix = $prefixUtil->getPrefix($config->adminusername);
    $api = new LCApi($config->servername, $config->adminusername, $config->adminpassword, $prefix);
    if (!$api->lcapi_authenticate()) {
        wimba_add_log(WIMBA_ERROR, WC, get_string('wrongadminpass', 'liveclassroom'));
        error(get_string('wrongadminpass', 'liveclassroom'), $_SERVER["HTTP_REFERER"]);
    }
    $domxml = false;
    $php_extension = get_loaded_extensions();
    for ($i = 0; $i < count($php_extension); $i++) {
        if ($php_extension[$i] == "libxml" || $php_extension[$i] == "domxml") {
            $domxml = true;
        }
    }
    if ($domxml === false) {
        wimba_add_log(WIMBA_ERROR, WC, get_string('domxml', 'liveclassroom'));
        error(get_string('domxml', 'liveclassroom'), $_SERVER["HTTP_REFERER"]);
    }
    return;
}

function makeAutoreplyList($selfurl)
{
    global $uid, $special_codes_notice, $br, $guiPlus, $guiMinus, $editText, $addText, $delText;
    $content .= "\n            <h2>List/Manage/Delete SMS autoreplies</h2>\n            <p>\n            <a href=\"{$selfurl}&op=add\">[ Add ]</a>\n            <a href=\"{$selfurl}&op=export\">[ Export ]</a>\n            <a href=\"{$selfurl}&op=import\">[ Import ]</a>\n            <a href=\"{$selfurl}&op=test\">[ Test ]</a>\n            <a href=\"{$selfurl}&op=help\">[ Help ]</a>\n            <hr><p>\n        ";
    $content .= genDelForm("delAutoreply", "{$selfurl}&op=delAutoreply");
    $content .= genDelForm("delScenario", "{$selfurl}&op=delScenario");
    $autoreplies = DB_DataObject::factory('playsms_featAutoreply');
    if (!isadmin()) {
        $autoreplies->uid = $uid;
    }
    $autoreplies->orderBy("autoreply_code");
    $autoreplies->find();
    while ($autoreplies->fetch()) {
        $owner = uid2username($autoreplies->uid);
        $autoreplyInfo = generateScenarios($selfurl, $autoreplies->autoreply_id, false);
        $showhideLink = "<a href=\"javascript:;\" onClick=\"javascript: toggleShow('{$autoreplies->autoreply_code}', this, '{$guiPlus}', '{$guiMinus}');\" title=\"Show/Hide\">{$guiPlus}</a>";
        $editLink = "<a href=\"{$selfurl}&op=edit&id={$autoreplies->autoreply_id}\" title=\"Edit\">{$editText}</a>";
        $deleteMsg = "Are you sure you want to delete SMS autoreply `{$autoreplies->autoreply_code}`? Note that this will delete all autoreply scenarios under this autoreply.";
        $deleteLink = "<a href=\"javascript: delAutoreply({$autoreplies->autoreply_id}, '{$deleteMsg}');\" title=\"Delete\">{$delText}</a>";
        $content .= "{$showhideLink} \n {$editLink} \n {$deleteLink} \n <b>{$autoreplies->autoreply_code} &nbsp;</b>" . "<span id='{$autoreplies->autoreply_code}' style='display: none;'>" . "<span><b>User:</b> {$owner}<br><hr/></span>" . "<span style='position:relative; left:30px;'>{$autoreplyInfo}</span>" . "<span><hr/></span>" . "</span> \n<br/>";
        $content .= "<br/>\n\n";
    }
    echo $content;
    echo "<hr><p/><b>Special codes:</b> {$br}{$special_codes_notice}";
}

 public function _initialize()
 {
     $this->group = D('Group');
     parent::_initialize();
     //$this->assign('current','member');
     if (!isadmin($this->mid, $this->gid)) {
         $this->error('你没有权限进行管理');
     }
 }

/**
* @param object $resource
* @uses CFG, USER
*/
function get_text_for_indexing_ppt(&$resource)
{
    global $CFG, $USER;
    $indextext = null;
    // SECURITY : do not allow non admin execute anything on system !!
    if (!isadmin($USER->id)) {
        return;
    }
    $text = implode('', file("{$CFG->dataroot}/{$resource->course}/{$resource->reference}"));
    $remains = $text;
    $fragments = array();
    while (preg_match('/\\x00\\x9F\\x0F\\x04.{9}(......)(.*)/s', $remains, $matches)) {
        $unpacked = unpack("ncode/Llength", $matches[1]);
        $sequencecode = $unpacked['code'];
        $length = $unpacked['length'];
        // print "length : ".$length." ; segment type : ".sprintf("%x", $sequencecode)."<br/>";
        $followup = $matches[2];
        // local system encoding sequence
        if ($sequencecode == 0xa80f) {
            $aFragment = substr($followup, 0, $length);
            $remains = substr($followup, $length);
            $fragments[] = $aFragment;
        } elseif ($sequencecode == 0xa00f) {
            $aFragment = substr($followup, 0, $length);
            // $aFragment = mb_convert_encoding($aFragment, 'UTF-16', 'UTF-8');
            $aFragment = preg_replace('/\\xA0\\x00\\x19\\x20/s', "'", $aFragment);
            // some quotes
            $aFragment = preg_replace('/\\x00/s', "", $aFragment);
            $remains = substr($followup, $length);
            $fragments[] = $aFragment;
        } else {
            $remains = $followup;
        }
    }
    $indextext = implode(' ', $fragments);
    $indextext = preg_replace('/\\x19\\x20/', "'", $indextext);
    // some quotes
    $indextext = preg_replace('/\\x09/', '', $indextext);
    // some extra chars
    $indextext = preg_replace('/\\x0D/', "\n", $indextext);
    // some quotes
    $indextext = preg_replace('/\\x0A/', "\n", $indextext);
    // some quotes
    $indextextprint = implode('<hr/>', $fragments);
    // debug code
    // $logppt = fopen("C:/php5/logs/pptlog", "w");
    // fwrite($logppt, $indextext);
    // fclose($logppt);
    if (!empty($CFG->block_search_limit_index_body)) {
        $indextext = shorten($text, $CFG->block_search_limit_index_body);
    }
    $indextext = mb_convert_encoding($indextext, 'UTF8', 'auto');
    return $indextext;
}

 function __construct()
 {
     if (!islogged()) {
         redirect('login');
     }
     if (!isadmin()) {
         redirect('/');
     }
     $this->adminmodel = new adminmodel();
     $this->mailerdecorator = new mailerdecorator();
 }

function getperm()
{
    if (!islogged()) {
        echo "&notlogged";
    } else {
        if (isadmin()) {
            echo "&admin";
        } else {
            echo "&logged";
        }
    }
}

function can_get_list($user)
{
    if (isadmin()) {
        return TRUE;
    }
    foreach ($user as $u) {
        if (can_get_listrule($u)) {
            continue;
        } else {
            return FALSE;
        }
    }
    return TRUE;
}

/**
* Global Search Engine for Moodle
* add-on 1.8+ : Valery Fremaux [valery.fremaux@club-internet.fr] 
* 2007/08/02
*
* this is a format handler for getting text out of a proprietary binary format 
* so it can be indexed by Lucene search engine
*/
function get_text_for_indexing_txt(&$resource)
{
    global $CFG, $USER;
    // SECURITY : do not allow non admin execute anything on system !!
    if (!isadmin($USER->id)) {
        return;
    }
    // just try to get text empirically from ppt binary flow
    $text = implode('', file("{$CFG->dataroot}/{$resource->course}/{$resource->reference}"));
    if (!empty($CFG->block_search_limit_index_body)) {
        $text = shorten($text, $CFG->block_search_limit_index_body);
    }
    return $text;
}

function makeList($uid, $selfurl, $offset = 0, $numShow = 75)
{
    $db = DB_DataObject::factory('playsms_tblUserInbox');
    if (!$offset) {
        $offset = 0;
    }
    $db->limit($offset, $numShow);
    $db->orderBy("in_id DESC");
    $pagetitle = "Inbox";
    if (isadmin() && !$uid) {
        $pagetitle .= " (All)";
    } else {
        $db->in_uid = $uid;
    }
    $db->in_hidden = '0';
    if ($offset) {
        $newOffset = $offset - $numShow;
        $prevUrl = "{$selfurl}&offset={$newOffset}";
    } else {
        $prevUrl = "#";
    }
    $note = "<p>Note: This inbox shows messages not processed by any of the features (e.g., AutoReply, Poll, etc)</p>";
    $newOffset = $offset + $numShow;
    $nextUrl = "{$selfurl}&offset={$newOffset}";
    $exportUrl = "{$selfurl}&op=export";
    $linksPrevNext = "<a href='{$prevUrl}'>[ Prev] </a>\n    \t\t   \t\t <a href='{$nextUrl}'>[ Next ]</a>\n                     <a href='{$exportUrl}'>[ Export ]</a>";
    // create hidden form with the
    // id to delete, this way it will
    // get POSTed
    //
    $delForm = generateActionSubmitter("del", "{$selfurl}&op=del", "id");
    $content = "{$delForm}\n\t\t    <h2>{$pagetitle}</h2>\n\t\t    <p/>\n\t\t\t{$linksPrevNext}\n\t\t    <p/>{$note}\n\t\t    <table width=100% cellpadding=1 cellspacing=1 border=1>\n\t\t    <tr>\n\t\t      <td align=center class=box_title width=4>*</td>\n\t\t      <td align=center class=box_title width=20%>Time</td>\n\t\t      <td align=center class=box_title width=20%>Sender</td>\n\t\t      <td align=center class=box_title width=60%>Message</td>\n\t\t      <td align=center class=box_title>Action</td>\n\t\t    </tr>\n\t\t";
    $db->find();
    while ($db->fetch()) {
        $in_id = $db->in_id;
        $in_sender = $db->in_sender;
        $p_desc = pnum2pdesc($in_sender);
        $current_sender = $in_sender;
        if ($p_desc) {
            $current_sender = "{$in_sender}<br>({$p_desc})";
        }
        $in_msg = nl2br($db->in_msg);
        $in_datetime = $db->in_datetime;
        $deleteCode = "javascript: del({$db->in_id}, " . "'Are you sure you want to delete this SMS ?');";
        $actionCode = "<a href=\"{$deleteCode}\">[Delete]</a>";
        $content .= "\n\t\t\t<tr>\n\t\t\t\t<td valign=top class=box_text align=left width=4>{$db->in_id}</td>\n\t\t\t\t<td valign=top class=box_text align=center width=20%>{$in_datetime}</td>\n\t\t\t\t<td valign=top class=box_text align=center width=20%>{$current_sender}</td>\n\t\t\t\t<td valign=top class=box_text align=left width=60%>{$in_msg}</td>\n\t\t\t\t<td valign=top class=box_text align=left nowrap>{$actionCode}</td>\n\t\t\t</tr>\n\t\t    ";
    }
    $content .= "</table>";
    return $content;
}