mirror of
https://github.com/sbrl/Pepperminty-Wiki.git
synced 2024-12-23 01:55:01 +00:00
354 lines
15 KiB
PHP
354 lines
15 KiB
PHP
<?php
|
|
register_module([
|
|
"name" => "Uploader",
|
|
"version" => "0.3",
|
|
"author" => "Starbeamrainbowlabs",
|
|
"description" => "Adds the ability to upload files to Pepperminty Wiki. Uploaded files act as pages and have the special 'File:' prefix.",
|
|
"id" => "feature-upload",
|
|
"code" => function() {
|
|
global $settings;
|
|
|
|
/*
|
|
* ██ ██ ██████ ██ ██████ █████ ██████
|
|
* ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██
|
|
* ██ ██ ██████ ██ ██ ██ ███████ ██ ██
|
|
* ██ ██ ██ ██ ██ ██ ██ ██ ██ ██
|
|
* ██████ ██ ███████ ██████ ██ ██ ██████
|
|
*/
|
|
add_action("upload", function() {
|
|
global $settings, $env, $pageindex, $paths;
|
|
|
|
switch($_SERVER["REQUEST_METHOD"])
|
|
{
|
|
case "GET":
|
|
// Send upload page
|
|
|
|
if(!$settings->upload_enabled)
|
|
exit(page_renderer::render("Upload Disabled - $setting->sitename", "<p>You can't upload anything at the moment because $settings->sitename has uploads disabled. Try contacting " . $settings->admindetails["name"] . ", your site Administrator. <a href='javascript:history.back();'>Go back</a>.</p>"));
|
|
if(!$env->is_logged_in)
|
|
exit(page_renderer::render("Upload Error - $settings->sitename", "<p>You are not currently logged in, so you can't upload anything.</p>
|
|
<p>Try <a href='?action=login&returnto=" . rawurlencode("?action=upload") . "'>logging in</a> first.</p>"));
|
|
|
|
exit(page_renderer::render("Upload - $settings->sitename", "<p>Select an image below, and then type a name for it in the box. This server currently supports uploads up to " . human_filesize(get_max_upload_size()) . " in size.</p>
|
|
<p>$settings->sitename currently supports uploading of the following file types: " . implode(", ", $settings->upload_allowed_file_types) . ".</p>
|
|
<form method='post' action='?action=upload' enctype='multipart/form-data'>
|
|
<label for='file'>Select a file to upload.</label>
|
|
<input type='file' name='file' />
|
|
<br />
|
|
<label for='name'>Name:</label>
|
|
<input type='text' name='name' />
|
|
<br />
|
|
<label for='description'>Description:</label>
|
|
<textarea name='description'></textarea>
|
|
<br />
|
|
<input type='submit' value='Upload' />
|
|
</form>"));
|
|
|
|
break;
|
|
|
|
case "POST":
|
|
// Recieve file
|
|
|
|
// Make sure uploads are enabled
|
|
if(!$settings->upload_enabled)
|
|
{
|
|
unlink($_FILES["file"]["tmp_name"]);
|
|
http_response_code(412);
|
|
exit(page_renderer::render("Upload failed - $settings->sitename", "<p>Your upload couldn't be processed because uploads are currently disabled on $settings->sitename. <a href='index.php'>Go back to the main page</a>.</p>"));
|
|
}
|
|
|
|
// Make sure that the user is logged in
|
|
if(!$env->is_logged_in)
|
|
{
|
|
unlink($_FILES["file"]["tmp_name"]);
|
|
http_response_code(401);
|
|
exit(page_renderer::render("Upload failed - $settings->sitename", "<p>Your upload couldn't be processed because you are not logged in.</p><p>Try <a href='?action=login&returnto=" . rawurlencode("?action=upload") . "'>logging in</a> first."));
|
|
}
|
|
|
|
// Calculate the target ename, removing any characters we
|
|
// are unsure about.
|
|
$target_name = makepathsafe($_POST["name"]);
|
|
$temp_filename = $_FILES["file"]["tmp_name"];
|
|
|
|
$mimechecker = finfo_open(FILEINFO_MIME_TYPE);
|
|
$mime_type = finfo_file($mimechecker, $temp_filename);
|
|
finfo_close($mimechecker);
|
|
|
|
// Perform appropriate checks based on the *real* filetype
|
|
switch(substr($mime_type, 0, strpos($mime_type, "/")))
|
|
{
|
|
case "image":
|
|
$extra_data = [];
|
|
$imagesize = getimagesize($temp_filename, $extra_data);
|
|
// Make sure that the image size is defined
|
|
if(!is_int($imagesize[0]) or !is_int($imagesize[1]))
|
|
{
|
|
http_response_code(415);
|
|
exit(page_renderer::render("Upload Error - $settings->sitename", "<p>The file that you uploaded doesn't appear to be an image. $settings->sitename currently only supports uploading images (videos coming soon). <a href='?action=upload'>Go back to try again</a>.</p>"));
|
|
}
|
|
|
|
break;
|
|
|
|
case "video":
|
|
http_response_code(501);
|
|
exit(page_renderer::render("Upload Error - $settings->sitename", "<p>You uploaded a video, but $settings->sitename doesn't support them yet. Please try again later.</p>"));
|
|
|
|
default:
|
|
http_response_code(415);
|
|
exit(page_renderer::render("Upload Error - $settings->sitename", "<p>You uploaded an unnknown file type which couldn't be processed. $settings->sitename thinks that the file you uploaded was a(n) '$mime_type', which isn't supported.</p>"));
|
|
}
|
|
|
|
$file_extension = system_mime_type_extension($mime_type);
|
|
|
|
$new_filename = "$paths->upload_file_prefix$target_name.$file_extension";
|
|
$new_description_filename = "$new_filename.md";
|
|
|
|
if(isset($pageindex->$new_filename))
|
|
exit(page_renderer::render("Upload Error - $settings->sitename", "<p>A page or file has already been uploaded with the name '$new_filename'. Try deleting it first. If you do not have permission to delete things, try contacting one of the moderators.</p>"));
|
|
|
|
if(!file_exists("Files"))
|
|
mkdir("Files", 0664);
|
|
|
|
if(!move_uploaded_file($temp_filename, $env->storage_prefix . $new_filename))
|
|
{
|
|
http_response_code(409);
|
|
exit(page_renderer::render("Upload Error - $settings->sitename", "<p>The file you uploaded was valid, but $settings->sitename couldn't verify that it was tampered with during the upload process. This probably means that $settings->sitename has been attacked. Please contact " . $settings->admindetails . ", your $settings->sitename Administrator.</p>"));
|
|
}
|
|
|
|
$description = $_POST["description"];
|
|
|
|
// Escape the raw html in the provided description if the setting is enabled
|
|
if($settings->clean_raw_html)
|
|
$description = htmlentities($description, ENT_QUOTES);
|
|
|
|
file_put_contents($env->storage_prefix . $new_description_filename, $description);
|
|
|
|
// Construct a new entry for the pageindex
|
|
$entry = new stdClass();
|
|
// Point to the description's filepath since this property
|
|
// should point to a markdown file
|
|
$entry->filename = $new_description_filename;
|
|
$entry->size = strlen($description);
|
|
$entry->lastmodified = time();
|
|
$entry->lasteditor = $env->user;
|
|
$entry->uploadedfile = true;
|
|
$entry->uploadedfilepath = $new_filename;
|
|
$entry->uploadedfilemime = $mime_type;
|
|
// Add the new entry to the pageindex
|
|
// Assign the new entry to the image's filepath as that
|
|
// should be the page name.
|
|
$pageindex->$new_filename = $entry;
|
|
|
|
// Save the pageindex
|
|
file_put_contents($paths->pageindex, json_encode($pageindex, JSON_PRETTY_PRINT));
|
|
|
|
header("location: ?action=view&page=$new_filename&upload=success");
|
|
|
|
break;
|
|
}
|
|
});
|
|
|
|
/*
|
|
* ██████ ██████ ███████ ██ ██ ██ ███████ ██ ██
|
|
* ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██
|
|
* ██████ ██████ █████ ██ ██ ██ █████ ██ █ ██
|
|
* ██ ██ ██ ██ ██ ██ ██ ██ ██ ███ ██
|
|
* ██ ██ ██ ███████ ████ ██ ███████ ███ ███
|
|
*/
|
|
add_action("preview", function() {
|
|
global $settings, $env, $pageindex;
|
|
|
|
$filepath = $env->storage_prefix . $pageindex->{$env->page}->uploadedfilepath;
|
|
$mime_type = $pageindex->{$env->page}->uploadedfilemime;
|
|
|
|
if(isset($_GET["size"]) and $_GET["size"] == "original")
|
|
{
|
|
// Get the file size
|
|
$filesize = filesize($filepath);
|
|
|
|
// Send some headers
|
|
header("content-length: $filesize");
|
|
header("content-type: $mime_type");
|
|
|
|
// Open the file and send it to the user
|
|
$handle = fopen($filepath, "rb");
|
|
fpassthru($handle);
|
|
fclose($handle);
|
|
exit();
|
|
}
|
|
|
|
// Determine the target size of the image
|
|
$target_size = 512;
|
|
if(isset($_GET["size"]))
|
|
$target_size = intval($_GET["size"]);
|
|
if($target_size < $settings->min_preview_size)
|
|
$target_size = $settings->min_preview_size;
|
|
if($target_size > $settings->max_preview_size)
|
|
$target_size = $settings->max_preview_size;
|
|
|
|
// Determine the output file type
|
|
$output_mime = $settings->preview_file_type;
|
|
if(isset($_GET["type"]) and in_array($_GET["type"], [ "image/png", "image/jpeg", "image/webp" ]))
|
|
$output_mime = $_GET["type"];
|
|
|
|
switch(substr($mime_type, 0, strpos($mime_type, "/")))
|
|
{
|
|
case "image":
|
|
$image = false;
|
|
switch($mime_type)
|
|
{
|
|
case "image/jpeg":
|
|
$image = imagecreatefromjpeg($filepath);
|
|
break;
|
|
case "image/gif":
|
|
$image = imagecreatefromgif($filepath);
|
|
break;
|
|
case "image/png":
|
|
$image = imagecreatefrompng($filepath);
|
|
break;
|
|
case "image/webp":
|
|
$image = imagecreatefromwebp($filepath);
|
|
break;
|
|
default:
|
|
http_response_code(415);
|
|
$image = errorimage("Unsupported image type.");
|
|
break;
|
|
}
|
|
|
|
$raw_width = imagesx($image);
|
|
$raw_height = imagesy($image);
|
|
|
|
$preview_image = resize_image($image, $target_size);
|
|
header("content-type: $output_mime");
|
|
switch($output_mime)
|
|
{
|
|
case "image/jpeg":
|
|
imagejpeg($preview_image);
|
|
break;
|
|
case "image/png":
|
|
imagepng($preview_image);
|
|
break;
|
|
default:
|
|
case "image/webp":
|
|
imagewebp($preview_image);
|
|
break;
|
|
}
|
|
imagedestroy($preview_image);
|
|
break;
|
|
|
|
default:
|
|
http_response_code(501);
|
|
exit("Unrecognised file type.");
|
|
}
|
|
});
|
|
|
|
page_renderer::register_part_preprocessor(function(&$parts) {
|
|
global $pageindex, $env, $settings;
|
|
// Todo add the preview to the top of the page here, but only if the current action is view and we are on a page that is a file
|
|
if(isset($pageindex->{$env->page}->uploadedfile) and $pageindex->{$env->page}->uploadedfile == true)
|
|
{
|
|
// We are looking at a page that is paired with an uploaded file
|
|
$filepath = $pageindex->{$env->page}->uploadedfilepath;
|
|
$mime_type = $pageindex->{$env->page}->uploadedfilemime;
|
|
$dimensions = getimagesize($env->storage_prefix . $filepath);
|
|
|
|
$preview_sizes = [ 256, 512, 768, 1024, 1440 ];
|
|
$preview_html = "<figure class='preview'>
|
|
<img src='?action=preview&size=$settings->default_preview_size&page=" . rawurlencode($env->page) . "' />
|
|
<nav class='image-controls'>
|
|
<ul><li><a href='" . ($env->storage_prefix == "./" ? $filepath : "?action=preview&size=original&page=" . rawurlencode($env->page)) . "'>🌄 Original image</a></li>
|
|
<li>Other Sizes: ";
|
|
foreach($preview_sizes as $size)
|
|
$preview_html .= "<a href='?action=preview&page=" . rawurlencode($env->page) . "&size=$size'>$size" . "px</a> ";
|
|
$preview_html .= "</li></ul></nav>
|
|
</figure>
|
|
<h2>File Information</h2>
|
|
<table><tr><th>Name</th><td>" . str_replace("File/", "", $filepath) . "</td>
|
|
<tr><th>Type</th><td>$mime_type</td></tr>
|
|
<tr><th>Size</th><td>" . human_filesize(filesize($filepath)) . "</td></tr>
|
|
<tr><th>Original dimensions</th><td>$dimensions[0] x $dimensions[1]</td></tr>
|
|
<tr><th>Uploaded by</th><td>" . $pageindex->{$env->page}->lasteditor . "</td></tr></table>
|
|
<h2>Description</h2>";
|
|
|
|
$parts["{content}"] = str_replace("</h1>", "</h1>\n$preview_html", $parts["{content}"]);
|
|
}
|
|
});
|
|
|
|
// Register a section on the help page on uploading files
|
|
add_help_section("28-uploading-files", "Uploading Files", "<p>$settings->sitename supports the uploading of files, though it is up to " . $settings->admindetails["name"] . ", $settings->sitename's administrator as to whether it is enabled or not (uploads are currently " . (($settings->upload_enabled) ? "enabled" : "disabled") . ").</p>
|
|
<p>Currently Pepperminty Wiki (the software that $settings->sitename uses) only supports the uploading of images, although more file types should be supported in the future (<a href='//github.com/sbrl/Pepperminty-Wiki/issues'>open an issue on GitHub</a> if you are interested in support for more file types).</p>
|
|
<p>Uploading a file is actually quite simple. Click the "Upload" option in the "More..." menu to go to the upload page. The upload page will tell you what types of file $settings->sitename allows, and the maximum supported filesize for files that you upload (this is usually set by the web server that the wiki is running on).</p>
|
|
<p>Use the file chooser to select the file that you want to upload, and then decide on a name for it. Note that the name that you choose should not include the file extension, as this will be determined automatically. Enter a description that will appear on the file's page, and then click upload.</p>");
|
|
}
|
|
]);
|
|
|
|
//// Pair of functions to calculate the actual maximum upload size supported by the server
|
|
//// Lifted from Drupal by @meustrus from Stackoverflow. Link to answer:
|
|
//// http://stackoverflow.com/a/25370978/1460422
|
|
// Returns a file size limit in bytes based on the PHP upload_max_filesize
|
|
// and post_max_size
|
|
function get_max_upload_size()
|
|
{
|
|
static $max_size = -1;
|
|
if ($max_size < 0) {
|
|
// Start with post_max_size.
|
|
$max_size = parse_size(ini_get('post_max_size'));
|
|
// If upload_max_size is less, then reduce. Except if upload_max_size is
|
|
// zero, which indicates no limit.
|
|
$upload_max = parse_size(ini_get('upload_max_filesize'));
|
|
if ($upload_max > 0 && $upload_max < $max_size) {
|
|
$max_size = $upload_max;
|
|
}
|
|
}
|
|
return $max_size;
|
|
}
|
|
|
|
function parse_size($size) {
|
|
$unit = preg_replace('/[^bkmgtpezy]/i', '', $size); // Remove the non-unit characters from the size.
|
|
$size = preg_replace('/[^0-9\.]/', '', $size); // Remove the non-numeric characters from the size.
|
|
if ($unit) {
|
|
// Find the position of the unit in the ordered string which is the power of magnitude to multiply a kilobyte by.
|
|
return round($size * pow(1024, stripos('bkmgtpezy', $unit[0])));
|
|
} else {
|
|
return round($size);
|
|
}
|
|
}
|
|
|
|
function errorimage($text)
|
|
{
|
|
$width = 640;
|
|
$height = 480;
|
|
$image = imagecreatetruecolor($width, $height);
|
|
imagefill($image, 0, 0, imagecolorallocate($image, 238, 232, 242)); // Set the background to #eee8f2
|
|
$fontwidth = imagefontwidth(3);
|
|
imagetext($image, 3,
|
|
($width / 2) - (($fontwidth * strlen($text)) / 2),
|
|
($height / 2) - (imagefontheight(3) / 2),
|
|
$text,
|
|
imagecolorallocate($image, 17, 17, 17) // #111111
|
|
);
|
|
|
|
return $image;
|
|
}
|
|
|
|
function resize_image($image, $size)
|
|
{
|
|
$cur_width = imagesx($image);
|
|
$cur_height = imagesy($image);
|
|
|
|
if($cur_width < $size and $cur_height < $size)
|
|
return $image;
|
|
|
|
$width_ratio = $size / $cur_width;
|
|
$height_ratio = $size / $cur_height;
|
|
$ratio = min($width_ratio, $height_ratio);
|
|
|
|
$new_height = floor($cur_height * $ratio);
|
|
$new_width = floor($cur_width * $ratio);
|
|
|
|
header("x-resize-to: $new_width x $new_height\n");
|
|
|
|
return imagescale($image, $new_width, $new_height);
|
|
}
|
|
|
|
?>
|