mirror of
https://github.com/MarSeventh/CloudFlare-ImgBed.git
synced 2026-04-26 23:25:11 +00:00
254 lines
9.7 KiB
JavaScript
254 lines
9.7 KiB
JavaScript
import { errorHandling, telemetryData } from "./utils/middleware";
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function UnauthorizedException(reason) {
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return new Response(reason, {
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status: 401,
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statusText: "Unauthorized",
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headers: {
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"Content-Type": "text/plain;charset=UTF-8",
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// Disables caching by default.
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"Cache-Control": "no-store",
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// Returns the "Content-Length" header for HTTP HEAD requests.
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"Content-Length": reason.length,
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},
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});
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}
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function isValidAuthCode(envAuthCode, authCode) {
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return authCode === envAuthCode;
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}
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function isAuthCodeDefined(authCode) {
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return authCode !== undefined && authCode !== null && authCode.trim() !== '';
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}
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function getCookieValue(cookies, name) {
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const match = cookies.match(new RegExp('(^| )' + name + '=([^;]+)'));
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return match ? decodeURIComponent(match[2]) : null;
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}
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export async function onRequestPost(context) { // Contents of context object
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const { request, env, params, waitUntil, next, data } = context;
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const url = new URL(request.url);
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const clonedRequest = await request.clone();
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await errorHandling(context);
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telemetryData(context);
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if (typeof env.img_url == "undefined" || env.img_url == null || env.img_url == "") {
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// img_url 未定义或为空的处理逻辑
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return new Response('Error: Please configure KV database', { status: 500 });
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}
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const formdata = await clonedRequest.formData();
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const fileType = formdata.get('file').type;
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const fileName = formdata.get('file').name;
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let fileExt = fileName.split('.').pop(); // 文件扩展名
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if (!isExtValid(fileExt)) {
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// 如果文件名中没有扩展名，尝试从文件类型中获取
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fileExt = fileType.split('/').pop();
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if (!isExtValid(fileExt)) {
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// Type中无法获取扩展名
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fileExt = 'unknown' // 默认扩展名
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}
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}
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// 由于TG会把gif后缀的文件转为视频，所以需要修改后缀名绕过限制
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if (fileExt === 'gif') {
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const newFileName = fileName.replace(/\.gif$/, '.jpeg');
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const newFile = new File([formdata.get('file')], newFileName, { type: fileType });
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formdata.set('file', newFile);
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} else if (fileExt === 'webp') {
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const newFileName = fileName.replace(/\.webp$/, '.jpeg');
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const newFile = new File([formdata.get('file')], newFileName, { type: fileType });
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formdata.set('file', newFile);
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}
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const fileTypeMap = {
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'image/': {'url': 'sendPhoto', 'type': 'photo'},
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'video/': {'url': 'sendVideo', 'type': 'video'},
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'audio/': {'url': 'sendAudio', 'type': 'audio'},
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'application/pdf': {'url': 'sendDocument', 'type': 'document'},
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};
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const defaultType = {'url': 'sendDocument', 'type': 'document'};
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let sendFunction = Object.keys(fileTypeMap).find(key => fileType.startsWith(key))
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? fileTypeMap[Object.keys(fileTypeMap).find(key => fileType.startsWith(key))]
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: defaultType;
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// GIF 特殊处理
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if (fileType === 'image/gif' || fileType === 'image/webp' || fileExt === 'gif' || fileExt === 'webp') {
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sendFunction = {'url': 'sendAnimation', 'type': 'animation'};
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}
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// 优先从请求 URL 获取 authCode
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let authCode = url.searchParams.get('authCode');
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// 如果 URL 中没有 authCode，从 Referer 中获取
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if (!authCode) {
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const referer = request.headers.get('Referer');
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if (referer) {
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try {
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const refererUrl = new URL(referer);
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authCode = new URLSearchParams(refererUrl.search).get('authCode');
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} catch (e) {
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console.error('Invalid referer URL:', e);
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}
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}
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}
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// 如果 Referer 中没有 authCode，从请求头中获取
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if (!authCode) {
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authCode = request.headers.get('authCode');
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}
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// 如果请求头中没有 authCode，从 Cookie 中获取
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if (!authCode) {
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const cookies = request.headers.get('Cookie');
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if (cookies) {
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authCode = getCookieValue(cookies, 'authCode');
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}
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}
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if (isAuthCodeDefined(env.AUTH_CODE) && !isValidAuthCode(env.AUTH_CODE, authCode)) {
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return new UnauthorizedException("error");
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}
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// 构建目标 URL 时剔除 authCode 参数
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// const targetUrl = new URL(url.pathname, 'https://telegra.ph'); // telegraph接口，已失效，缅怀
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const targetUrl = new URL(`https://api.telegram.org/bot${env.TG_BOT_TOKEN}/${sendFunction.url}`); // telegram接口
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let newFormdata = new FormData();
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newFormdata.append('chat_id', env.TG_CHAT_ID);
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newFormdata.append(sendFunction.type, formdata.get('file'));
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url.searchParams.forEach((value, key) => {
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if (key !== 'authCode') {
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targetUrl.searchParams.append(key, value);
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}
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});
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// 复制请求头并剔除 authCode
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const headers = new Headers(clonedRequest.headers);
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headers.delete('authCode');
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let res = new Response('upload error, check your environment params!', { status: 400 });
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try {
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const response = await fetch(targetUrl.href, {
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method: clonedRequest.method,
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headers: {
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"User-Agent": " Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36 Edg/121.0.0.0"
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},
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body: newFormdata,
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});
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const clonedRes = await response.clone().json(); // 等待响应克隆和解析完成
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const fileInfo = getFile(clonedRes);
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const filePath = await getFilePath(env, fileInfo.file_id);
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const time = new Date().getTime();
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const id = fileInfo.file_id;
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//const fullId = id + '.' + fileExt;
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// 构建独一无二的 ID
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const unique_index = time + Math.floor(Math.random() * 10000);
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const fullId = fileName? unique_index + '_' + fileName : unique_index + '.' + fileExt;
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const encodedFullId = encodeURIComponent(fullId);
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// 若上传成功，将响应返回给客户端
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if (response.ok) {
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res = new Response(
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JSON.stringify([{ 'src': `/file/${fullId}` }]),
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{
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status: 200,
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headers: { 'Content-Type': 'application/json' }
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}
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);
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}
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const apikey = env.ModerateContentApiKey;
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if (apikey == undefined || apikey == null || apikey == "") {
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await env.img_url.put(encodedFullId, "", {
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metadata: { FileName: fileName, FileType: fileType, ListType: "None", Label: "None", TimeStamp: time, Channel: "TelegramNew", TgFilePath: filePath, TgFileId: id },
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});
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} else {
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try {
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const fetchResponse = await fetch(`https://api.moderatecontent.com/moderate/?key=${apikey}&url=https://api.telegram.org/file/bot${env.TG_BOT_TOKEN}/${filePath}`);
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if (!fetchResponse.ok) {
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throw new Error(`HTTP error! status: ${fetchResponse.status}`);
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}
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const moderate_data = await fetchResponse.json();
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await env.img_url.put(encodedFullId, "", {
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metadata: { FileName: fileName, FileType: fileType, ListType: "None", Label: moderate_data.rating_label, TimeStamp: time, Channel: "TelegramNew", TgFilePath: filePath, TgFileId: id },
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});
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} catch (error) {
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console.error('Moderate Error:', error);
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} finally {
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console.log('Moderate Done');
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}
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}
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} catch (error) {
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console.error('Error:', error);
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} finally {
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return res;
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}
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}
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function getFile(response) {
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try {
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if (!response.ok) {
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return null;
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}
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const getFileDetails = (file) => ({
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file_id: file.file_id,
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file_name: file.file_name || file.file_unique_id
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});
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if (response.result.photo) {
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const largestPhoto = response.result.photo.reduce((prev, current) =>
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(prev.file_size > current.file_size) ? prev : current
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);
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return getFileDetails(largestPhoto);
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}
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if (response.result.video) {
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return getFileDetails(response.result.video);
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}
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if (response.result.document) {
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return getFileDetails(response.result.document);
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}
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return null;
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} catch (error) {
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console.error('Error getting file id:', error.message);
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return null;
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}
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}
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async function getFilePath(env, file_id) {
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try {
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const url = `https://api.telegram.org/bot${env.TG_BOT_TOKEN}/getFile?file_id=${file_id}`;
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const res = await fetch(url, {
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method: 'GET',
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headers: {
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"User-Agent": " Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome"
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},
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})
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let responseData = await res.json();
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if (responseData.ok) {
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const file_path = responseData.result.file_path
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return file_path
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} else {
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return null;
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}
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} catch (error) {
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return null;
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}
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}
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function isExtValid(fileExt) {
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return ['jpeg', 'jpg', 'png', 'gif', 'webp',
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'mp4', 'mp3', 'ogg',
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'mp3', 'wav', 'flac', 'aac', 'opus',
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'doc', 'docx', 'ppt', 'pptx', 'xls', 'xlsx', 'pdf',
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'txt', 'md', 'json', 'xml', 'html', 'css', 'js', 'ts', 'go', 'java', 'php', 'py', 'rb', 'sh', 'bat', 'cmd', 'ps1', 'psm1', 'psd', 'ai', 'sketch', 'fig', 'svg', 'eps', 'zip', 'rar', '7z', 'tar', 'gz', 'bz2', 'xz', 'apk', 'exe', 'msi', 'dmg', 'iso', 'torrent', 'webp', 'ico', 'svg', 'ttf', 'otf', 'woff', 'woff2', 'eot', 'apk', 'crx', 'xpi', 'deb', 'rpm', 'jar', 'war', 'ear', 'img', 'iso', 'vdi', 'ova', 'ovf', 'qcow2', 'vmdk', 'vhd', 'vhdx', 'pvm', 'dsk', 'hdd', 'bin', 'cue', 'mds', 'mdf', 'nrg', 'ccd', 'cif', 'c2d', 'daa', 'b6t', 'b5t', 'bwt', 'isz', 'isz', 'cdi', 'flp', 'uif', 'xdi', 'sdi'
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].includes(fileExt);
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} |