feat(web/image_hosting): image upload

db/app_uoj233.sql

@@ -837,16 +837,20 @@ UNLOCK TABLES;
 /*!40101 SET @saved_cs_client     = @@character_set_client */;
 /*!40101 SET character_set_client = utf8mb4 */;
 CREATE TABLE `users_images` (
-  `id` varchar(30) NOT NULL,
-  `username` varchar(20) NOT NULL,
+  `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
+  `path` varchar(100) NOT NULL,
+  `uploader` varchar(20) NOT NULL,
   `width` int(11) NOT NULL,
   `height` int(11) NOT NULL,
   `upload_time` datetime NOT NULL,
   `size` int(11) NOT NULL,
+  `hash` varchar(70) NOT NULL,
   PRIMARY KEY (`id`),
-  KEY `username` (`username`),
+  KEY `uploader` (`uploader`),
+  KET `path` (`path`),
   KEY `upload_time` (`upload_time`),
-  KEY `size` (`size`)
+  KEY `size` (`size`),
+  KEY `hash` (`hash`)
 ) ENGINE=MyISAM DEFAULT CHARSET=utf8mb4;
 /*!40101 SET character_set_client = @saved_cs_client */;
 

docker-compose.development.yml

@@ -12,6 +12,14 @@ services:
       - MYSQL_DATABASE=app_uoj233
       - MYSQL_ROOT_PASSWORD=root
 
+  phpmyadmin:
+    image: phpmyadmin
+    restart: always
+    ports:
+      - 28080:80
+    environment:
+      - PMA_ARBITRARY=1
+  
   uoj-judger:
     build:
       context: ./judger/

web/app/controllers/image_hosting/index.php

@@ -1,21 +1,279 @@
 <?php
-	requirePHPLib('form');
+	use Gregwar\Captcha\PhraseBuilder;
+	use Gregwar\Captcha\CaptchaBuilder;
 
-	if (!Auth::check() && UOJConfig::$data['switch']['force-login']) {
+	requirePHPLib('form');
+	requireLib('bootstrap5');
+
+	if (!Auth::check()) {
 		redirectToLogin();
 	}
 
-	if (!isNormalUser($myUser) && UOJConfig::$data['switch']['force-login']) {
+	if (!isNormalUser($myUser)) {
 		become403Page();
 	}
 
-	$REQUIRE_LIB['bootstrap5'] = '';
+	$limit = $myUser['images_size_limit'];
+	$used = DB::select("SELECT SUM(size) FROM `users_images` WHERE uploader = {$myUser['username']}")["SUM(size)"];
+
+	function throwError($msg) {
+		die(json_encode(['status' => 'error', 'message' => $msg]));
+	}
+
+	$allowedTypes = [IMAGETYPE_PNG, IMAGETYPE_JPEG, IMAGETYPE_GIF];
+	if ($_POST['image_upload_file_submit'] == 'submit') {
+		header('Content-Type: application/json');
+
+		if (!crsf_check()) {
+			throwError('expired');
+		}
+
+		if (!isset($_SESSION['phrase']) || !PhraseBuilder::comparePhrases($_SESSION['phrase'], $_POST['captcha'])) {
+			throwError("bad_captcha");
+		}
+
+		if ($_FILES["image_upload_file"]["error"] > 0) {
+			throwError($_FILES["image_upload_file"]["error"]);
+		}
+
+		if ($_FILES["image_upload_file"]["size"] > 5242880) { // 5 MB
+			throwError('too_large');
+		}
+
+		if ($used + $_FILES["image_upload_file"]["size"] > $limit) {
+			throwError('storage_limit_exceeded');
+		}
+
+		$size = getimagesize($_FILES['image_upload_file']['tmp_name']);
+
+		if (!$size || !in_array($size[2], $allowedTypes)) {
+			throwError('not_a_image');
+		}
+
+		list($width, $height, $type) = $size;
+		$hash = hash_file("sha256", $_FILES['image_upload_file']['tmp_name']);
+
+		$watermark_text = UOJConfig::$data['profile']['oj-name-short'];
+		if (isSuperUser($myUser) && $_POST['watermark'] == 'no_watermark') {
+			$watermark_text = "";
+			$hash += "__no";
+		} elseif ($_POST['watermark'] == 'site_shortname_and_username') {
+			$watermark_text .= ' @'.Auth::id();
+			$hash += "__id";
+		}
+
+		$existing_image = DB::selectFirst("SELECT * FROM users_images WHERE `hash` = '$hash'");
+
+		if ($existing_image) {
+			die(json_encode(['status' => 'success', 'path' => $existing_image['path']]));
+		}
+
+		$img = imagecreatefromstring(file_get_contents($_FILES["image_upload_file"]["tmp_name"]));
+		$white = imagecolorallocate($img, 255, 255, 255);
+		$black = imagecolorallocate($img, 150, 150, 150);
+
+		imagettftext($img, '16', 0, 10 + 1, max(0, $height - 20) + 1, $black, UOJContext::documentRoot().'/fonts/roboto-mono/RobotoMono-Bold.ttf', $watermark_text);
+		imagettftext($img, '16', 0, 10, max(0, $height - 20), $white, UOJContext::documentRoot().'/fonts/roboto-mono/RobotoMono-Bold.ttf', $watermark_text);
+		imagepng($img, $_FILES["image_upload_file"]["tmp_name"]);
+		imagedestroy($img);
+
+		$filename = uojRandAvaiableFileName('/image_hosting/', 10, '.png');
+		if (!move_uploaded_file($_FILES["image_upload_file"]["tmp_name"], UOJContext::storagePath().$filename)) {
+			throwError('unknown error');
+		}
+
+		DB::insert("INSERT INTO users_images (`path`, uploader, width, height, upload_time, size, `hash`) VALUES ('$filename', '{$myUser['username']}', $width, $height, now(), {$_FILES["image_upload_file"]["size"]}, '$hash')");
+
+		die(json_encode(['status' => 'success', 'path' => $filename]));
+	}
 	?>
 
 <?php echoUOJPageHeader(UOJLocale::get('image hosting')) ?>
 
+<style>
+.drop {
+	display: flex;
+    align-items: center;
+    flex-direction: column;
+    justify-content: center;
+    align-self: center;
+    flex-grow: 0 !important;
+    width: 9em;
+    height: 8.75em;
+    user-select: none;
+    cursor: pointer;
+    margin-left: 0;
+    background: #fafafa;
+    border: 1px solid #e8e8e8;
+    box-sizing: border-box;
+    border-radius: 4px;
+}
+
+.drop:hover {
+    border-color: #89d1f5;
+}
+</style>
+
 <h1 class="h2">
 	<?= UOJLocale::get('image hosting') ?>
 </h1>
 
+<div class="card card-default">
+<div class="card-body">
+<form class="row m-0" id="image-upload-form" method="post" enctype="multipart/form-data">
+	<div class="col-12 col-md-3 drop mx-auto" id="image-upload-form-drop">
+		<svg aria-hidden="true" focusable="false" role="img" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 576 512" width="56" class="mb-2">
+			<g>
+				<path fill="#3498db" d="M424.49 120.48a12 12 0 0 0-17 0L272 256l-39.51-39.52a12 12 0 0 0-17 0L160 272v48h352V208zM64 336V128H48a48 48 0 0 0-48 48v256a48 48 0 0 0 48 48h384a48 48 0 0 0 48-48v-16H144a80.09 80.09 0 0 1-80-80z"></path>
+				<path fill="#89d1f5" d="M528 32H144a48 48 0 0 0-48 48v256a48 48 0 0 0 48 48h384a48 48 0 0 0 48-48V80a48 48 0 0 0-48-48zM208 80a48 48 0 1 1-48 48 48 48 0 0 1 48-48zm304 240H160v-48l55.52-55.52a12 12 0 0 1 17 0L272 256l135.52-135.52a12 12 0 0 1 17 0L512 208z"></path>
+			</g>
+		</svg>
+		<span class="small">点击此处选择图片</span>
+	</div>
+	<input id="image_upload_file" name="image_upload_file" type="file" accept="image/*" style="display: none;" />
+	<div class="modal fade" id="image-upload-modal" tabindex="-1" aria-hidden="true">
+		<div class="modal-dialog">
+			<div class="modal-content">
+				<div class="modal-header">
+					<h1 class="modal-title fs-5" id="exampleModalLabel">上传图片</h1>
+					<button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
+				</div>
+				<div class="modal-body">
+					<div class="mb-3">
+						您确定要上传图片吗？
+					</div>
+					<div class="mb-3" id="modal-file-info"></div>
+					<div class="input-group">
+						<input type="text" class="form-control" id="input-captcha" name="captcha" placeholder="<?= UOJLocale::get('enter verification code') ?>" maxlength="20" />
+						<span class="input-group-text p-0 overflow-hidden rounded-0" style="border-bottom-right-radius: var(--bs-border-radius) !important">
+							<img id="captcha" class="col w-100 h-100" src="/captcha">
+						</span>
+					</div>
+					<div class="mt-3" id="modal-help-message" style="display: none"></div>
+				</div>
+				<div class="modal-footer">
+					<button type="button" class="btn btn-secondary" data-bs-dismiss="modal">取消</button>
+					<button type="submit" class="btn btn-primary">确定</button>
+				</div>
+			</div>
+		</div>
+	</div>
+	<div class="col-12 col-md-3 mt-3 mt-md-0 ms-md-2">
+		<h2 class="h4">水印</h2>
+		<?php if (isSuperUser($myUser)): ?>
+		<div class="form-check d-inline-block d-md-block me-2">
+			<input class="form-check-input" type="radio" name="watermark" id="watermark-no_watermark" data-value="no_watermark">
+			<label class="form-check-label" for="watermark-no_watermark">
+				无水印
+			</label>
+		</div>
+		<?php endif ?>
+		<div class="form-check d-inline-block d-md-block me-2">
+			<input class="form-check-input" type="radio" name="watermark" id="watermark-site_shortname" data-value="site_shortname" checked>
+			<label class="form-check-label" for="watermark-site_shortname">
+				<?= UOJConfig::$data['profile']['oj-name-short'] ?>
+			</label>
+		</div>
+		<div class="form-check d-inline-block d-md-block me-2">
+			<input class="form-check-input" type="radio" name="watermark" id="watermark-site_shortname_and_username" data-value="site_shortname_and_username">
+			<label class="form-check-label" for="watermark-site_shortname_and_username">
+				<?= UOJConfig::$data['profile']['oj-name-short'] ?> @<?= Auth::id() ?>
+			</label>
+		</div>
+	</div>
+	<div class="col mt-3 mt-md-0 ms-md-2">
+		<h2 class="h4">上传须知</h2>
+		<ul>
+			<li>上传的图片必须符合法律与社会道德；</li>
+			<li>图床仅供 S2OJ 站内使用；</li>
+			<li>在合适的地方插入图片即可引用。</li>
+		</ul>
+	</div>
+</form>
+</div>
+</div>
+<script>
+var image_upload_modal = new bootstrap.Modal('#image-upload-modal');
+
+function refreshCaptcha() {
+	var timestamp = new Date().getTime();
+	$("#captcha").attr("src", "/captcha" + '?' + timestamp);
+}
+
+$("#captcha").click(function(e) {
+	refreshCaptcha();
+});
+
+$('#image-upload-form').submit(function(event) {
+	event.preventDefault();
+
+	var data = new FormData();
+	data.append('_token', "<?= crsf_token() ?>");
+	data.append('image_upload_file_submit', 'submit');
+	data.append('image_upload_file', $('#image_upload_file').prop('files')[0]);
+	data.append('watermark', $('input[name=watermark]:checked', this).data('value'));
+	data.append('captcha', $('#input-captcha').val());
+
+	if ($('#image_upload_file').prop('files')[0].size > 5242880) {
+		$('#modal-help-message').html('图片大小不能超过 5 MB。').show();
+
+		return false;
+	}
+
+	$('#modal-help-message').html('上传中...').show();
+
+	$.ajax({
+		method: 'POST',
+		processData: false,
+		contentType: false,
+		data: data,
+		success: function(data) {
+			if (data.status === 'success') {
+				image_upload_modal.hide();
+				location.reload();
+			} else {
+				if (data.message === 'bad_captcha') {
+					refreshCaptcha();
+					$('#modal-help-message').html('验证码错误。').show();
+				} else if (data.message === 'expired') {
+					$('#modal-help-message').html('页面过期，请刷新重试。').show();
+				} else if (data.message === 'storage_limit_exceeded') {
+					$('#modal-help-message').html('存储超限，请联系管理员提升限制。').show();
+				} else if (data.message === 'not_a_image') {
+					$('#modal-help-message').html('文件格式不受支持。').show();
+				} else if (data.message === 'too_large') {
+					$('#modal-help-message').html('图片大小不能超过 5 MB。').show();
+				}
+			}
+		},
+	});
+
+	return false;
+});
+$('#image-upload-form-drop').click(function() {
+	$('#image_upload_file').click();
+});
+$('#image_upload_file').change(function() {
+	if ($(this).prop('files')) {
+		refreshCaptcha();
+		var watermark_type = $('input[name=watermark]:checked', '#image-upload-form').data('value');
+		var html = '';
+
+		html += '大小：<b>'+($(this).prop('files')[0].size / 1024).toFixed(2)+'</b> KB。';
+		
+		if (watermark_type === 'no_watermark') {
+			html += '不添加水印。';
+		} else if (watermark_type === 'site_shortname_and_username') {
+			html += '使用水印：<?= UOJConfig::$data['profile']['oj-name-short'] ?> @<?= Auth::id() ?>。';
+		} else {
+			html += '使用水印：<?= UOJConfig::$data['profile']['oj-name-short'] ?>。';
+		}
+
+		$('#modal-file-info').html(html);
+		$('#modal-help-message').html('').hide();
+		image_upload_modal.show();
+	}
+});
+</script>
+
 <?php echoUOJPageFooter() ?>

web/app/libs/uoj-rand-lib.php

@@ -17,7 +17,7 @@ function uojRandAvaiableFileName($dir, $length = 20, $suffix = '') {
 	do {
 		$fileName = $dir . uojRandString($length);
 	} while (file_exists(UOJContext::storagePath().$fileName.$suffix));
-	return $fileName;
+	return $fileName.$suffix;
 }
 
 function uojRandAvaiableTmpFileName() {

web/app/route.php

@@ -81,8 +81,8 @@ Route::group([
 		Route::any('/click-zan', '/click_zan.php');
 
 		// Image Hosting
-		Route::any('/image-hosting', '/image_hosting/index.php');
-		Route::get('/image-hosting/{image_name}.png', '/image_hosting/get_image.php');
+		Route::any('/image_hosting', '/image_hosting/index.php');
+		Route::get('/image_hosting/{image_name}.png', '/image_hosting/get_image.php');
 	}
 );
 

web/app/upgrade/4_image_hosting/up.sql

@@ -6,16 +6,20 @@ ALTER TABLE `user_info` ADD COLUMN `images_size_limit` int(11) UNSIGNED NOT NULL
 
 /*!40101 SET @saved_cs_client     = @@character_set_client */;
 /*!40101 SET character_set_client = utf8mb4 */;
-CREATE TABLE IF NOT EXISTS `users_images` (
-  `id` varchar(30) NOT NULL,
-  `username` varchar(20) NOT NULL,
+CREATE TABLE `users_images` (
+  `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
+  `path` varchar(100) NOT NULL,
+  `uploader` varchar(20) NOT NULL,
   `width` int(11) NOT NULL,
   `height` int(11) NOT NULL,
   `upload_time` datetime NOT NULL,
   `size` int(11) NOT NULL,
+  `hash` varchar(70) NOT NULL,
   PRIMARY KEY (`id`),
-  KEY `username` (`username`),
+  KEY `uploader` (`uploader`),
+  KEY `path` (`path`),
   KEY `upload_time` (`upload_time`),
-  KEY `size` (`size`)
+  KEY `size` (`size`),
+  KEY `hash` (`hash`)
 ) ENGINE=MyISAM DEFAULT CHARSET=utf8mb4;
 /*!40101 SET character_set_client = @saved_cs_client */;

web/app/views/main-nav.php

@@ -111,7 +111,7 @@ mb-4" role="navigation">
 						</a>
 						<ul class="dropdown-menu">
 							<li>
-								<a class="dropdown-item" href="<?= HTML::url('/image-hosting') ?>">
+								<a class="dropdown-item" href="<?= HTML::url('/image_hosting') ?>">
 									<i class="bi bi-images"></i>
 									<?= UOJLocale::get('image hosting') ?>
 								</a>