moodle/files/index.php

<?php // $Id$

    require('../config.php');
    require_once($CFG->libdir.'/filelib.php');
    require_once($CFG->libdir.'/adminlib.php');

    $courseid   = optional_param('id', 0, PARAM_INT);

    $contextid  = optional_param('contextid', SYSCONTEXTID, PARAM_INT);
    $filearea   = optional_param('filearea', '', PARAM_ALPHAEXT);
    $itemid     = optional_param('itemid', -1, PARAM_INT);
    $filepath   = optional_param('filepath', '', PARAM_PATH);
    $filename   = optional_param('filename', '', PARAM_FILE);

    $newdirname = optional_param('newdirname', '', PARAM_FILE);
    $delete     = optional_param('delete', 0, PARAM_BOOL);

    if ($courseid) {
        if (!$course = $DB->get_record('course', array('id'=>$courseid))) {
            print_error('invalidcourseid');
        }
        if (!$context = get_context_instance(CONTEXT_COURSE, $course->id)) {
            print_error('invalidcontext');
        }
        redirect('index.php?contextid='.$context->id.'&amp;itemid=0&amp;filearea=course_content');
    }

    if (!$context = get_context_instance_by_id($contextid)) {
        print_error('invalidcontext');
    }

    require_login();
    require_capability('moodle/course:managefiles', $context);

    if ($filearea === '') {
        $filearea = null;
    }

    if ($itemid < 0) {
        $itemid = null;
    }

    if ($filepath === '') {
        $filepath = null;
    }

    if ($filename === '') {
        $filename = null;
    }

    $error = '';

    $browser = get_file_browser();

    $file_info = $browser->get_file_info($context, $filearea, $itemid, $filepath, $filename);

/// process actions
    if ($file_info and $file_info->is_directory() and $file_info->is_writable() and $newdirname !== '' and data_submitted() and confirm_sesskey()) {
        if ($newdir_info = $file_info->create_directory($newdirname, $USER->id)) {
            $params = $newdir_info->get_params_rawencoded();
            $params = implode('&amp;', $params);
            redirect("index.php?$params");
        } else {
            $error = "Could not create new dir"; // TODO: localise
        }
    }

    if ($file_info and $file_info->is_directory() and $file_info->is_writable() and isset($_FILES['newfile']) and data_submitted() and confirm_sesskey()) {
        $file = $_FILES['newfile'];
        $newfilename = clean_param($file['name'], PARAM_FILE);
        if (is_uploaded_file($_FILES['newfile']['tmp_name'])) {
            try {
                if ($newfile = $file_info->create_file_from_pathname($newfilename, $_FILES['newfile']['tmp_name'], $USER->id)) {
                    $params = $file_info->get_params_rawencoded();
                    $params = implode('&amp;', $params);
                    redirect("index.php?$params");

                } else {
                    $error = "Could not create upload file"; // TODO: localise
                }
            } catch (file_exception $e) {
                $error = "Exception: Could not create upload file"; // TODO: localise
            }
        }
    }

    if ($file_info and $delete) {
        if (!data_submitted() or !confirm_sesskey()) {
            print_header();
            notify(get_string('deletecheckwarning').': '.$file_info->get_visible_name());
            $parent_info = $file_info->get_parent();

            $optionsno  = $parent_info->get_params();
            $optionsyes = $file_info->get_params();
            $optionsyes['delete'] = 1;
            $optionsyes['sesskey'] = sesskey();

            notice_yesno (get_string('deletecheckfiles'), 'index.php', 'index.php', $optionsyes, $optionsno, 'post', 'get');
            print_footer();
            die;
        }

        if ($parent_info = $file_info->get_parent() and $parent_info->is_writable()) {
            if (!$file_info->delete()) {
                $error = "Could not delete file!"; // TODO: localise
            }
            $params = $parent_info->get_params_rawencoded();
            $params = implode('&amp;', $params);
            redirect("index.php?$params", $error);
        }
    }


/// print dir listing
    html_header($context, $file_info);

    if ($error !== '') {
        notify($error);
    }

    displaydir($file_info);

    if ($file_info and $file_info->is_directory() and $file_info->is_writable()) {
        echo '<br />';

        echo '<form action="index.php" method="post"><div>';
        echo '<input type="hidden" name="contextid" value="'.$contextid.'" />';
        echo '<input type="hidden" name="filearea" value="'.$filearea.'" />';
        echo '<input type="hidden" name="itemid" value="'.$itemid.'" />';
        echo '<input type="hidden" name="filepath" value="'.s($filepath).'" />';
        echo '<input type="hidden" name="filename" value="'.s($filename).'" />';
        echo '<input type="hidden" name="sesskey" value="'.sesskey().'" />';
        echo '<input type="text" name="newdirname" value="" />';
        echo '<input type="submit" value="'.get_string('makeafolder').'" />';
        echo '</div></form>';

        echo '<br />';

        echo '<form enctype="multipart/form-data" method="post" action="index.php"><div>';
        echo '<input type="hidden" name="contextid" value="'.$contextid.'" />';
        echo '<input type="hidden" name="filearea" value="'.$filearea.'" />';
        echo '<input type="hidden" name="itemid" value="'.$itemid.'" />';
        echo '<input type="hidden" name="filepath" value="'.s($filepath).'" />';
        echo '<input type="hidden" name="filename" value="'.s($filename).'" />';
        echo '<input type="hidden" name="sesskey" value="'.sesskey().'" />';
        echo '<input name="newfile" type="file" />';
        echo '<input type="submit" value="'.get_string('uploadafile').'" />';
        echo '</div></form>';
    }

    html_footer();

/// UI functions /////////////////////////

function html_footer() {
    echo '</td></tr></table>';
    print_footer();
}

function html_header($context, $file_info){
    global $CFG, $SITE;

    $navlinks = array();
    $strfiles = get_string("files");

    $navlinks[] = array('name' => $strfiles, 'link' => null, 'type' => 'misc');

    $navigation = build_navigation($navlinks);
    print_header("$SITE->shortname: $strfiles", '', $navigation);

    echo "<table border=\"0\" style=\"margin-left:auto;margin-right:auto\" cellspacing=\"3\" cellpadding=\"3\" width=\"740\">";
    echo "<tr>";
    echo "<td colspan=\"2\">";
}

/// FILE FUNCTIONS ///////////////////////////////////////////////////////////

function print_cell($alignment='center', $text='&nbsp;', $class='') {
    if ($class) {
        $class = ' class="'.$class.'"';
    }
    echo '<td align="'.$alignment.'" style="white-space:nowrap "'.$class.'>'.$text.'</td>';
}

function displaydir($file_info) {
    global $CFG;

    $children = $file_info->get_children();
    $parent_info = $file_info->get_parent();

    $strname     = get_string('name');
    $strsize     = get_string('size');
    $strmodified = get_string('modified');
    $strfolder   = get_string('folder');
    $strfile     = get_string('file');
    $strdownload = get_string('download');
    $strdelete   = get_string('delete');
    $straction   = get_string('action');

    $path = array();
    $params = $file_info->get_params_rawencoded();
    $params = implode('&amp;', $params);
    $path[] = $file_info->get_visible_name();

    $level = $parent_info;
    while ($level) {
        $params = $level->get_params_rawencoded();
        $params = implode('&amp;', $params);
        $path[] = '<a href="index.php?'.$params.'">'.$level->get_visible_name().'</a>';
        $level = $level->get_parent();
    }

    $path = array_reverse($path);

    $path = implode (' / ', $path);
    echo $path. ' /';

    echo "<div>";
    echo "<hr/>";
    echo "<table border=\"0\" cellspacing=\"2\" cellpadding=\"2\" width=\"740\" class=\"files\">";
    echo "<tr>";
    echo "<th class=\"header\" scope=\"col\"></th>";
    echo "<th class=\"header name\" scope=\"col\">$strname</th>";
    echo "<th class=\"header size\" scope=\"col\">$strsize</th>";
    echo "<th class=\"header date\" scope=\"col\">$strmodified</th>";
    echo "<th class=\"header commands\" scope=\"col\">$straction</th>";
    echo "</tr>\n";

    $parentwritable = $file_info->is_writable();

    if ($parent_info) {
        $params = $parent_info->get_params_rawencoded();
        $params = implode('&amp;', $params);

        echo "<tr class=\"folder\">";
        print_cell();
        print_cell('left', '<a href="index.php?'.$params.'"><img src="'.$CFG->pixpath.'/f/parent.gif" class="icon" alt="" />&nbsp;'.get_string('parentfolder').'</a>', 'name');
        print_cell();
        print_cell();
        print_cell();

        echo "</tr>";
    }

    if ($children) {
        foreach ($children as $child_info) {
            $filename = $child_info->get_visible_name();
            $filesize = $child_info->get_filesize();
            $filesize = $filesize ? display_size($filesize) : '';
            $filedate = $child_info->get_timemodified();
            $filedate = $filedate ? userdate($filedate) : '';

            $mimetype = $child_info->get_mimetype();

            $params = $child_info->get_params_rawencoded();
            $params = implode('&amp;', $params);

            if ($child_info->is_directory()) {

                echo "<tr class=\"folder\">";
                print_cell();
                print_cell("left", "<a href=\"index.php?$params\"><img src=\"$CFG->pixpath/f/folder.gif\" class=\"icon\" alt=\"$strfolder\" />&nbsp;".s($filename)."</a>", 'name');
                print_cell("right", $filesize, 'size');
                print_cell("right", $filedate, 'date');
                if ($parentwritable) {
                    print_cell("right", "<a href=\"index.php?$params&amp;sesskey=".sesskey()."&amp;delete=1\"><img src=\"$CFG->pixpath/t/delete.gif\" class=\"iconsmall\" alt=\"$strdelete\" /></a>", 'command');
                } else {
                    print_cell();
                }
                echo "</tr>";

            } else {

                $icon = mimeinfo_from_type("icon", $mimetype);
                if ($downloadurl = $child_info->get_url(true)) {
                    $downloadurl = "&nbsp;<a href=\"$downloadurl\" title=\"" . get_string('downloadfile') . "\"><img src=\"$CFG->pixpath/t/down.gif\" class=\"iconsmall\" alt=\"$strdownload\" /></a>";
                } else {
                    $downloadurl = '';
                }

                if ($viewurl = $child_info->get_url()) {
                    $viewurl = "&nbsp;".link_to_popup_window ($viewurl, "display",
                                                     "<img src=\"$CFG->pixpath/t/preview.gif\" class=\"iconsmall\" alt=\"$strfile\" />&nbsp;",
                                                     480, 640, get_string('viewfileinpopup'), null, true);
                } else {
                    $viewurl = '';
                }



                echo "<tr class=\"file\">";
                print_cell();
                print_cell("left", "<img src=\"$CFG->pixpath/f/$icon\" class=\"icon\" alt=\"$strfile\" />&nbsp;".s($filename).$downloadurl.$viewurl, 'name');
                print_cell("right", $filesize, 'size');
                print_cell("right", $filedate, 'date');
                if ($parentwritable) {
                    print_cell("right", "<a href=\"index.php?$params&amp;sesskey=".sesskey()."&amp;delete=1\"><img src=\"$CFG->pixpath/t/delete.gif\" class=\"iconsmall\" alt=\"$strdelete\" /></a>", 'command');
                } else {
                    print_cell();
                }
                echo "</tr>";
            }
        }
    }

    echo "</table>";
    echo "</div>";
    echo "<hr/>";

}

?>