MDL-10110 Adding validation for multichoice option single and multianswer

[moodle.git] / user / view.php

<?PHP // $Id$

//  Display profile for a particular user

    require_once("../config.php");
    require_once($CFG->dirroot.'/user/profile/lib.php');
    require_once($CFG->dirroot.'/tag/lib.php');

    $id      = optional_param('id',     0,      PARAM_INT);   // user id
    $course  = optional_param('course', SITEID, PARAM_INT);   // course id (defaults to Site)
    $enable  = optional_param('enable', 0, PARAM_BOOL);       // enable email
    $disable = optional_param('disable', 0, PARAM_BOOL);      // disable email

    if (empty($id)) {         // See your own profile by default
        require_login();
        $id = $USER->id;
    }

    if (! $user = $DB->get_record("user", array("id"=>$id))) {
        print_error('invaliduserid');
    }

    if (! $course = $DB->get_record("course", array("id"=>$course))) {
        print_error('invalidcourseid');
    }

    // special hack for cli installer - continue to site settings
    $systemcontext = get_context_instance(CONTEXT_SYSTEM);
    if ($SITE->shortname === '' and has_capability('moodle/site:config', $systemcontext)) {
        redirect($CFG->wwwroot .'/'. $CFG->admin .'/index.php');
    }

/// Set up page URL for blocks etc
    if ($course->id == SITEID) {
        $PAGE->set_url('user/view.php', array('id' => $user->id));
    } else {
        $PAGE->set_url('user/view.php', array('id' => $user->id, 'course' => $course->id));
    }

/// Make sure the current user is allowed to see this user

    if (empty($USER->id)) {
       $currentuser = false;
    } else {
       $currentuser = ($user->id == $USER->id);
    }

    if ($course->id == SITEID) {
        $coursecontext = get_context_instance(CONTEXT_SYSTEM);   // SYSTEM context
    } else {
        $coursecontext = get_context_instance(CONTEXT_COURSE, $course->id);   // Course context
    }
    $usercontext   = get_context_instance(CONTEXT_USER, $user->id);       // User context

    $PAGE->set_context($usercontext);

    if (!empty($CFG->forcelogin) || $course->id != SITEID) {
        // do not force parents to enrol
        if (!$DB->get_record('role_assignments', array('userid'=>$USER->id, 'contextid'=>$usercontext->id))) {
            require_login($course->id);
        }
    }

    if (!empty($CFG->forceloginforprofiles)) {
        require_login();
        if (isguest()) {
            redirect(get_login_url());
        }
    }

    $strpersonalprofile = get_string('personalprofile');
    $strparticipants = get_string("participants");
    $struser = get_string("user");

    $fullname = fullname($user, has_capability('moodle/site:viewfullnames', $coursecontext));

    $link = null;
    if (has_capability('moodle/course:viewparticipants', $coursecontext) || has_capability('moodle/site:viewparticipants', $systemcontext)) {
        $link = new moodle_url($CFG->wwwroot."/user/index.php", array('id'=>$course->id));
    }
    if ($course->id===SITEID) {
        $PAGE->navbar->ignore_active();
    }
    $PAGE->navbar->add($strparticipants, $link);

/// If the user being shown is not ourselves, then make sure we are allowed to see them!

    if (!$currentuser) {

        $PAGE->set_title("$strpersonalprofile: ");
        $PAGE->set_heading("$strpersonalprofile: ");

        if ($course->id == SITEID) {  // Reduce possibility of "browsing" userbase at site level
            if ($CFG->forceloginforprofiles and !isteacherinanycourse()
                    and !isteacherinanycourse($user->id)
                    and !has_capability('moodle/user:viewdetails', $usercontext)) {  // Teachers can browse and be browsed at site level. If not forceloginforprofiles, allow access (bug #4366)

                $PAGE->navbar->add($struser);
                echo $OUTPUT->header();
                echo $OUTPUT->heading(get_string('usernotavailable', 'error'));
                echo $OUTPUT->footer();
                exit;
            }
        } else {   // Normal course
            // check capabilities
            if (!has_capability('moodle/user:viewdetails', $coursecontext) &&
                !has_capability('moodle/user:viewdetails', $usercontext)) {
                print_error('cannotviewprofile');
            }

            if (!has_capability('moodle/course:view', $coursecontext, $user->id, false)) {
                if (has_capability('moodle/course:view', $coursecontext)) {
                    $PAGE->navbar->add($fullname);
                    echo $OUTPUT->heading(get_string('notenrolled', $fullname));
                } else {
                    $PAGE->navbar->add($struser);
                    echo $OUTPUT->heading(get_string('notenrolledprofile'));
                }
                echo $OUTPUT->continue_button($_SERVER['HTTP_REFERER']);
                echo $OUTPUT->footer();
                exit;
            }
        }


        // If groups are in use, make sure we can see that group
        if (groups_get_course_groupmode($course) == SEPARATEGROUPS and !has_capability('moodle/site:accessallgroups', $coursecontext)) {
            require_login();
            ///this is changed because of mygroupid
            $gtrue = (bool)groups_get_all_groups($course->id, $user->id);
            if (!$gtrue) {
                print_error("groupnotamember", '', "../course/view.php?id=$course->id");
            }
        }
    }


/// We've established they can see the user's name at least, so what about the rest?

    $PAGE->navbar->add($struser);
    $PAGE->set_title("$course->fullname: $strpersonalprofile: $fullname");
    $PAGE->set_heading($course->fullname);
    echo $OUTPUT->header();

    if (($course->id != SITEID) and ! isguest() ) {   // Need to have access to a course to see that info
        if (!has_capability('moodle/course:view', $coursecontext, $user->id)) {
            echo $OUTPUT->heading(get_string('notenrolled', '', $fullname));
            echo $OUTPUT->footer();
            die;
        }
    }

    if ($user->deleted) {
        echo $OUTPUT->heading(get_string('userdeleted'));
        if (!has_capability('moodle/user:update', $coursecontext)) {
            echo $OUTPUT->footer();
            die;
        }
    }

/// OK, security out the way, now we are showing the user

    add_to_log($course->id, "user", "view", "view.php?id=$user->id&course=$course->id", "$user->id");

    if ($course->id != SITEID) {
        $user->lastaccess = false;
        if ($lastaccess = $DB->get_record('user_lastaccess', array('userid'=>$user->id, 'courseid'=>$course->id))) {
            $user->lastaccess = $lastaccess->timeaccess;
        }
    }


/// Get the hidden field list
    if (has_capability('moodle/user:viewhiddendetails', $coursecontext)) {
        $hiddenfields = array();
    } else {
        $hiddenfields = array_flip(explode(',', $CFG->hiddenuserfields));
    }

/// Print tabs at top
/// This same call is made in:
///     /user/view.php
///     /user/edit.php
///     /course/user.php

    $currenttab = 'profile';
    $showroles = 1;
    if (!$user->deleted) {
        include('tabs.php');
    }

    if (is_mnet_remote_user($user)) {
        $sql = "
             SELECT DISTINCT h.id, h.name, h.wwwroot,
                             a.name as application, a.display_name
               FROM {mnet_host} h, {mnet_application} a
              WHERE h.id = ? AND h.applicationid = a.id
           ORDER BY a.display_name, h.name";

        $remotehost = $DB->get_record_sql($sql, array($user->mnethostid));

        echo '<p class="errorboxcontent">'.get_string('remoteappuser', $remotehost->application)." <br />\n";
        if ($USER->id == $user->id) {
            if ($remotehost->application =='moodle') {
                echo "Remote {$remotehost->display_name}: <a href=\"{$remotehost->wwwroot}/user/edit.php\">{$remotehost->name}</a> ".get_string('editremoteprofile')." </p>\n";
            } else {
                echo "Remote {$remotehost->display_name}: <a href=\"{$remotehost->wwwroot}/\">{$remotehost->name}</a> ".get_string('gotoyourserver')." </p>\n";
            }
        } else {
            echo "Remote {$remotehost->display_name}: <a href=\"{$remotehost->wwwroot}/\">{$remotehost->name}</a></p>\n";
        }
    }

    echo '<table width="80%" class="userinfobox" summary="">';
    echo '<tr>';
    echo '<td class="side">';
    $userpic = moodle_user_picture::make($user, $course->id);
    $userpic->size = 100;
    echo $OUTPUT->user_picture($userpic);
    echo '</td><td class="content">';

    // Print the description

    if ($user->description && !isset($hiddenfields['description'])) {
        $has_courseid = ($course->id != SITEID);
        if (!$has_courseid && !empty($CFG->profilesforenrolledusersonly) && !$DB->record_exists('role_assignments', array('userid'=>$id))) {
            echo get_string('profilenotshown', 'moodle').'<hr />';
        } else {
            echo format_text($user->description, FORMAT_MOODLE)."<hr />";
        }
    }

    // Print all the little details in a list

    echo '<table class="list">';

    if (! isset($hiddenfields['country']) && $user->country) {
        $countries = get_list_of_countries();
        print_row(get_string('country') . ':', $countries[$user->country]);
    }

    if (! isset($hiddenfields['city']) && $user->city) {
        print_row(get_string('city') . ':', $user->city);
    }

    if (has_capability('moodle/user:viewhiddendetails', $coursecontext)) {
        if ($user->address) {
            print_row(get_string("address").":", "$user->address");
        }
        if ($user->phone1) {
            print_row(get_string("phone").":", "$user->phone1");
        }
        if ($user->phone2) {
            print_row(get_string("phone2").":", "$user->phone2");
        }
    }

    if ($user->maildisplay == 1 or
       ($user->maildisplay == 2 and ($course->id != SITEID) and !isguest()) or
       has_capability('moodle/course:useremail', $coursecontext)) {

        $emailswitch = '';

        if (has_capability('moodle/course:useremail', $coursecontext) or $currentuser) {   /// Can use the enable/disable email stuff
            if (!empty($enable)) {     /// Recieved a parameter to enable the email address
                $DB->set_field('user', 'emailstop', 0, array('id'=>$user->id));
                $user->emailstop = 0;
            }
            if (!empty($disable)) {     /// Recieved a parameter to disable the email address
                $DB->set_field('user', 'emailstop', 1, array('id'=>$user->id));
                $user->emailstop = 1;
            }
        }

        if (has_capability('moodle/course:useremail', $coursecontext)) {   /// Can use the enable/disable email stuff
            if ($user->emailstop) {
                $switchparam = 'enable';
                $switchtitle = get_string('emaildisable');
                $switchclick = get_string('emailenableclick');
                $switchpix   = 't/emailno';
            } else {
                $switchparam = 'disable';
                $switchtitle = get_string('emailenable');
                $switchclick = get_string('emaildisableclick');
                $switchpix   = 't/email';
            }
            $emailswitch = "&nbsp;<a title=\"$switchclick\" ".
                           "href=\"view.php?id=$user->id&amp;course=$course->id&amp;$switchparam=1\">".
                           "<img src=\"" . $OUTPUT->old_icon_url("$switchpix") . "\" alt=\"$switchclick\" /></a>";

        } else if ($currentuser) {         /// Can only re-enable an email this way
            if ($user->emailstop) {   // Include link that tells how to re-enable their email
                $switchparam = 'enable';
                $switchtitle = get_string('emaildisable');
                $switchclick = get_string('emailenableclick');

                $emailswitch = "&nbsp;(<a title=\"$switchclick\" ".
                               "href=\"view.php?id=$user->id&amp;course=$course->id&amp;enable=1\">$switchtitle</a>)";
            }
        }

        print_row(get_string("email").":", obfuscate_mailto($user->email, '', $user->emailstop)."$emailswitch");
    }

    if ($user->url && !isset($hiddenfields['webpage'])) {
        $url = $user->url;
        if (strpos($user->url, '://') === false) {
            $url = 'http://'. $url;
        }
        print_row(get_string("webpage") .":", "<a href=\"$url\">$user->url</a>");
    }

    if ($user->icq && !isset($hiddenfields['icqnumber'])) {
        print_row(get_string('icqnumber').':',"<a href=\"http://web.icq.com/wwp?uin=$user->icq\">$user->icq <img src=\"http://web.icq.com/whitepages/online?icq=$user->icq&amp;img=5\" alt=\"\" /></a>");
    }

    if ($user->skype && !isset($hiddenfields['skypeid'])) {
        print_row(get_string('skypeid').':','<a href="callto:'.urlencode($user->skype).'">'.s($user->skype).
            ' <img src="http://mystatus.skype.com/smallicon/'.urlencode($user->skype).'" alt="'.get_string('status').'" '.
            ' /></a>');
    }
    if ($user->yahoo && !isset($hiddenfields['yahooid'])) {
        print_row(get_string('yahooid').':', '<a href="http://edit.yahoo.com/config/send_webmesg?.target='.urlencode($user->yahoo).'&amp;.src=pg">'.s($user->yahoo)." <img src=\"http://opi.yahoo.com/online?u=".urlencode($user->yahoo)."&m=g&t=0\" alt=\"\"></a>");
    }
    if ($user->aim && !isset($hiddenfields['aimid'])) {
        print_row(get_string('aimid').':', '<a href="aim:goim?screenname='.s($user->aim).'">'.s($user->aim).'</a>');
    }
    if ($user->msn && !isset($hiddenfields['msnid'])) {
        print_row(get_string('msnid').':', s($user->msn));
    }

    /// Print the Custom User Fields
    profile_display_fields($user->id);


    if (!isset($hiddenfields['mycourses'])) {
        if ($mycourses = get_my_courses($user->id, null, null, false, 21)) {
            $shown=0;
            $courselisting = '';
            foreach ($mycourses as $mycourse) {
                if ($mycourse->category) {
                    if ($mycourse->id != $course->id){
                        $class = '';
                        if ($mycourse->visible == 0) {
                            // get_my_courses will filter courses $USER cannot see
                            // if we get one with visible 0 it just means it's hidden
                            // ... but not from $USER
                            $class = 'class="dimmed"';
                        }
                        $courselisting .= "<a href=\"{$CFG->wwwroot}/user/view.php?id={$user->id}&amp;course={$mycourse->id}\" $class >"
                            . format_string($mycourse->fullname) . "</a>, ";
                    }
                    else {
                        $courselisting .= format_string($mycourse->fullname) . ", ";
                    }
                }
                $shown++;
                if($shown==20) {
                    $courselisting.= "...";
                    break;
                }
            }
            print_row(get_string('courses').':', rtrim($courselisting,', '));
        }
    }
    if (!isset($hiddenfields['firstaccess'])) {
        if ($user->firstaccess) {
            $datestring = userdate($user->firstaccess)."&nbsp; (".format_time(time() - $user->firstaccess).")";
        } else {
            $datestring = get_string("never");
        }
        print_row(get_string("firstaccess").":", $datestring);
    }
    if (!isset($hiddenfields['lastaccess'])) {
        if ($user->lastaccess) {
            $datestring = userdate($user->lastaccess)."&nbsp; (".format_time(time() - $user->lastaccess).")";
        } else {
            $datestring = get_string("never");
        }
        print_row(get_string("lastaccess").":", $datestring);
    }
/// printing roles

    if ($rolestring = get_user_roles_in_context($id, $coursecontext)) {
        print_row(get_string('roles').':', format_string($rolestring, false));
    }

/// Printing groups
    if (!isset($hiddenfields['groups'])) {
        $isseparategroups = ($course->groupmode == SEPARATEGROUPS and !has_capability('moodle/site:accessallgroups', $coursecontext));
        if (!$isseparategroups){
            if ($usergroups = groups_get_all_groups($course->id, $user->id)){
                $groupstr = '';
                foreach ($usergroups as $group){
                    $groupstr .= ' <a href="'.$CFG->wwwroot.'/user/index.php?id='.$course->id.'&amp;group='.$group->id.'">'.format_string($group->name).'</a>,';
                }
                print_row(get_string("group").":", rtrim($groupstr, ', '));
            }
        }
    }
/// End of printing groups

/// Printing Interests
	if( !empty($CFG->usetags)) {
	    if ( $interests = tag_get_tags_csv('user', $user->id) ) {
            print_row(get_string('interests') .": ", $interests);
        }
    }
/// End of Printing Interests

    echo "</table>";

    echo "</td></tr></table>";

    $userauth = get_auth_plugin($user->auth);

    $passwordchangeurl = false;
    if ($currentuser and $userauth->can_change_password() and !isguestuser() and has_capability('moodle/user:changeownpassword', $systemcontext)) {
        if (!$passwordchangeurl = $userauth->change_password_url()) {
            if (empty($CFG->loginhttps)) {
                $passwordchangeurl = "$CFG->wwwroot/login/change_password.php";
            } else {
                $passwordchangeurl = str_replace('http:', 'https:', $CFG->wwwroot.'/login/change_password.php');
            }
        }
    }

//  Print other functions
    echo '<div class="buttons">';

    if ($passwordchangeurl) {
        $params = array('id'=>$course->id);

        if (session_is_loggedinas()) {
            $passwordchangeurl = ''; // do not use actual change password url - might contain sensitive data
        } else {
            $parts = explode('?', $passwordchangeurl);
            $passwordchangeurl = reset($parts);
            $after = next($parts);
            preg_match_all('/([^&=]+)=([^&=]+)/', $after, $matches);
            if (count($matches)) {
                foreach($matches[0] as $key=>$match) {
                    $params[$matches[1][$key]] = $matches[2][$key];
                }
            }
        }
        echo "<form action=\"$passwordchangeurl\" method=\"get\">";
        echo "<div>";
        foreach($params as $key=>$value) {
            echo '<input type="hidden" name="'.$key.'" value="'.s($value).'" />';
        }
        if (session_is_loggedinas()) {
            // changing of password when "Logged in as" is not allowed
            echo "<input type=\"submit\" value=\"".get_string("changepassword")."\" disabled=\"disabled\" />";
        } else {
            echo "<input type=\"submit\" value=\"".get_string("changepassword")."\" />";
        }
        echo "</div>";
        echo "</form>";
    }

    if ($course->id != SITEID && empty($course->metacourse)) {   // Mostly only useful at course level

        $canunenrol = false;

        if ($user->id == $USER->id) { // Myself
            $canunenrol = has_capability('moodle/course:view', $coursecontext, NULL) &&              // Course participant
                          has_capability('moodle/role:unassignself', $coursecontext, NULL, false) && // Can unassign myself
                          get_user_roles($coursecontext, $user->id, false);                          // Must have role in course

        } else if (has_capability('moodle/role:assign', $coursecontext, NULL)) { // I can assign roles
            if ($roles = get_user_roles($coursecontext, $user->id, false)) {
                $canunenrol = true;
                foreach($roles as $role) {
                    if (!user_can_assign($coursecontext, $role->roleid)) {
                        $canunenrol = false; // I can not unassign all roles in this course :-(
                        break;
                    }
                }
            }
        }

        if ($canunenrol) {
            echo '<form action="'.$CFG->wwwroot.'/course/unenrol.php" method="get">';
            echo '<div>';
            echo '<input type="hidden" name="id" value="'.$course->id.'" />';
            echo '<input type="hidden" name="user" value="'.$user->id.'" />';
            echo '<input type="submit" value="'.s(get_string('unenrolme', '', $course->shortname)).'" />';
            echo '</div>';
            echo '</form>';
        }
    }

    if (!$user->deleted and $USER->id != $user->id  && !session_is_loggedinas() && has_capability('moodle/user:loginas', $coursecontext) &&
                                 ! has_capability('moodle/site:doanything', $coursecontext, $user->id, false)) {
        echo '<form action="'.$CFG->wwwroot.'/course/loginas.php" method="get">';
        echo '<div>';
        echo '<input type="hidden" name="id" value="'.$course->id.'" />';
        echo '<input type="hidden" name="user" value="'.$user->id.'" />';
        echo '<input type="hidden" name="sesskey" value="'.sesskey().'" />';
        echo '<input type="submit" value="'.get_string('loginas').'" />';
        echo '</div>';
        echo '</form>';
    }

    if (!$user->deleted and !empty($CFG->messaging) and !isguest() and has_capability('moodle/site:sendmessage', get_context_instance(CONTEXT_SYSTEM))) {
        if (!empty($USER->id) and ($USER->id == $user->id)) {
            if ($countmessages = $DB->count_records('message', array('useridto'=>$user->id))) {
                $messagebuttonname = get_string("messages", "message")."($countmessages)";
            } else {
                $messagebuttonname = get_string("messages", "message");
            }
            echo "<form onclick=\"this.target='message'\" action=\"../message/index.php\" method=\"get\">";
            echo "<div>";
            echo "<input type=\"submit\" value=\"$messagebuttonname\" onclick=\"return openpopup('/message/index.php', 'message', 'menubar=0,location=0,scrollbars,status,resizable,width=400,height=500', 0);\" />";
            echo "</div>";
            echo "</form>";
        } else {
            echo "<form onclick=\"this.target='message$user->id'\" action=\"../message/discussion.php\" method=\"get\">";
            echo "<div>";
            echo "<input type=\"hidden\" name=\"id\" value=\"$user->id\" />";
            echo "<input type=\"submit\" value=\"".get_string("sendmessage", "message")."\" onclick=\"return openpopup('/message/discussion.php?id=$user->id', 'message_$user->id', 'menubar=0,location=0,scrollbars,status,resizable,width=400,height=500', 0);\" />";
            echo "</div>";
            echo "</form>";
        }
    }
    // Authorize.net: User Payments
    if ($course->enrol == 'authorize' || (empty($course->enrol) && $CFG->enrol == 'authorize')) {
        echo "<form action=\"../enrol/authorize/index.php\" method=\"get\">";
        echo "<div>";
        echo "<input type=\"hidden\" name=\"course\" value=\"$course->id\" />";
        echo "<input type=\"hidden\" name=\"user\" value=\"$user->id\" />";
        echo "<input type=\"submit\" value=\"".get_string('payments')."\" />";
        echo "</div>";
        echo "</form>";
    }
    echo "</div>\n";

    if ($CFG->debugdisplay && debugging('', DEBUG_DEVELOPER) && $USER->id == $user->id) {  // Show user object
        echo '<hr />';
        echo $OUTPUT->heading('DEBUG MODE:  User session variables');
        print_object($USER);
    }

    echo $OUTPUT->footer();

/// Functions ///////

function print_row($left, $right) {
    echo "\n<tr><td class=\"label c0\">$left</td><td class=\"info c1\">$right</td></tr>\n";
}

?>