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index.js
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const authConfig = {
"siteName": "Drive Index",
"siteIcon": "",
"version": "_4.28",
"client_id": "",
"client_secret": "",
"refresh_token": "", // Authorization token
/**
* Set up multiple Drives to be displayed; add multiples by format
* [id]: It can be team folder id, subfolder id, or "root" (representing the root directory of personal disk);
* [name]: the displayed name
* [user]: Basic Auth username
* [pass]: Basic Auth password
* [protect_file_link]: Whether Basic Auth is used to protect the file link, the default value (when not set) is false, that is, the file link is not protected (convenient for straight chain download / external playback, etc.)
* Basic Auth of each folder can be set separately. Basic Auth protects all folders / subfolders in the disk by default
* [Note] By default, the file link is not protected, which can facilitate straight-chain download / external playback;
* If you want to protect the file link, you need to set protect_file_link to true. At this time, if you want to perform external playback and other operations, you need to replace host with user: pass @ host
* No need for Basic Auth folder, just keep user and pass empty at the same time. (No need to set it directly)
* [Note] For the folder whose id is set to the subfolder id, the search function will not be supported (it does not affect other disks).
**/
"roots": [
{
id: "root", //you can use folderid other than root but then search wont work
name: "eg1",
},
{
id: "drive_id",
name: "eg2",
user: 'user1',
pass: "111",
}
],
"files_list_page_size": 500,
"search_result_list_page_size": 50,
"enable_cors_file_down": false,
"enable_password_file_verify": false
};
/**
* web ui 设置
*/
const uiConfig = {
"theme": "material", // DO NOT set it to classic
"dark_mode": false,
"main_color": "blue-grey",
"accent_color": "blue",
"fluid_navigation_bar": true,
"avatar": "https://i.ibb.co/DwMwdFv/photo-2020-05-25-22-58-28.jpg",
"disable_navicon": true
};
/**
* global functions
*/
const FUNCS = {
formatSearchKeyword: function (keyword) {
let nothing = "";
let space = " ";
if (!keyword) return nothing;
return keyword.replace(/(!=)|['"=<>/\\:]/g, nothing)
.replace(/[,，|(){}]/g, space)
.trim()
}
};
/**
* global consts
* @type {{folder_mime_type: string, default_file_fields: string, gd_root_type: {share_drive: number, user_drive: number, sub_folder: number}}}
*/
const CONSTS = new (class {
default_file_fields = 'parents,id,name,mimeType,modifiedTime,createdTime,fileExtension,size';
gd_root_type = {
user_drive: 0,
share_drive: 1,
sub_folder: 2
};
folder_mime_type = 'application/vnd.google-apps.folder';
})();
// gd instances
var gds = [];
function html(current_drive_order = 0, model = {}) {
return `
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0,maximum-scale=1.0, user-scalable=no"/>
<title>${authConfig.siteName}</title>
<link rel="shortcut icon" href="${authConfig.siteIcon}" type="image/x-icon" />
<script>
window.drive_names = JSON.parse('${JSON.stringify(authConfig.roots.map(it => it.name))}');
window.MODEL = JSON.parse('${JSON.stringify(model)}');
window.current_drive_order = ${current_drive_order};
window.UI = JSON.parse('${JSON.stringify(uiConfig)}');
</script>
<script src="https://cdn.jsdelivr.net/gh/Genos2000/goIndex-theme-nexmoe@master/app_v3_en.js"></script>
</head>
<body>
</body>
</html>
`;
};
addEventListener('fetch', event => {
event.respondWith(handleRequest(event.request));
});
/**
* Fetch and log a request
* @param {Request} request
*/
async function handleRequest(request) {
if (gds.length === 0) {
for (let i = 0; i < authConfig.roots.length; i++) {
const gd = new googleDrive(authConfig, i);
await gd.init();
gds.push(gd)
}
// 这个操作并行，提高效率
let tasks = [];
gds.forEach(gd => {
tasks.push(gd.initRootType());
});
for (let task of tasks) {
await task;
}
}
// 从 path 中提取 drive order
// 并根据 drive order 获取对应的 gd instance
let gd;
let url = new URL(request.url);
let path = url.pathname;
/**
* 重定向至起始页
* @returns {Response}
*/
function redirectToIndexPage() {
return new Response('', {status: 301, headers: {'Location': `${url.origin}/0:/`}});
}
if (path == '/') return redirectToIndexPage();
if (path.toLowerCase() == '/favicon.ico') {
// 后面可以找一个 favicon
return new Response('', {status: 404})
}
// 特殊命令格式
const command_reg = /^\/(?<num>\d+):(?<command>[a-zA-Z0-9]+)$/g;
const match = command_reg.exec(path);
if (match) {
const num = match.groups.num;
const order = Number(num);
if (order >= 0 && order < gds.length) {
gd = gds[order];
} else {
return redirectToIndexPage()
}
// basic auth
for (const r = gd.basicAuthResponse(request); r;) return r;
const command = match.groups.command;
// 搜索
if (command === 'search') {
if (request.method === 'POST') {
// 搜索结果
return handleSearch(request, gd);
} else {
const params = url.searchParams;
// 搜索页面
return new Response(html(gd.order, {
q: params.get("q") || '',
is_search_page: true,
root_type: gd.root_type
}),
{
status: 200,
headers: {'Content-Type': 'text/html; charset=utf-8'}
});
}
} else if (command === 'id2path' && request.method === 'POST') {
return handleId2Path(request, gd)
}
}
// 期望的 path 格式
const common_reg = /^\/\d+:\/.*$/g;
try {
if (!path.match(common_reg)) {
return redirectToIndexPage();
}
let split = path.split("/");
let order = Number(split[1].slice(0, -1));
if (order >= 0 && order < gds.length) {
gd = gds[order];
} else {
return redirectToIndexPage()
}
} catch (e) {
return redirectToIndexPage()
}
// basic auth
// for (const r = gd.basicAuthResponse(request); r;) return r;
const basic_auth_res = gd.basicAuthResponse(request);
path = path.replace(gd.url_path_prefix, '') || '/';
if (request.method == 'POST') {
return basic_auth_res || apiRequest(request, gd);
}
let action = url.searchParams.get('a');
if (path.substr(-1) == '/' || action != null) {
return basic_auth_res || new Response(html(gd.order, {root_type: gd.root_type}), {
status: 200,
headers: {'Content-Type': 'text/html; charset=utf-8'}
});
} else {
if (path.split('/').pop().toLowerCase() == ".password") {
return basic_auth_res || new Response("", {status: 404});
}
let file = await gd.file(path);
let range = request.headers.get('Range');
const inline_down = 'true' === url.searchParams.get('inline');
if (gd.root.protect_file_link && basic_auth_res) return basic_auth_res;
return gd.down(file.id, range, inline_down);
}
}
async function apiRequest(request, gd) {
let url = new URL(request.url);
let path = url.pathname;
path = path.replace(gd.url_path_prefix, '') || '/';
let option = {status: 200, headers: {'Access-Control-Allow-Origin': '*'}}
if (path.substr(-1) == '/') {
let form = await request.formData();
// 这样可以提升首次列目录时的速度。缺点是，如果password验证失败，也依然会产生列目录的开销
let deferred_list_result = gd.list(path, form.get('page_token'), Number(form.get('page_index')));
// check .password file, if `enable_password_file_verify` is true
if (authConfig['enable_password_file_verify']) {
let password = await gd.password(path);
// console.log("dir password", password);
if (password && password.replace("\n", "") !== form.get('password')) {
let html = `{"error": {"code": 401,"message": "password error."}}`;
return new Response(html, option);
}
}
let list_result = await deferred_list_result;
return new Response(JSON.stringify(list_result), option);
} else {
let file = await gd.file(path);
let range = request.headers.get('Range');
return new Response(JSON.stringify(file));
}
}
// 处理 search
async function handleSearch(request, gd) {
const option = {status: 200, headers: {'Access-Control-Allow-Origin': '*'}};
let form = await request.formData();
let search_result = await
gd.search(form.get('q') || '', form.get('page_token'), Number(form.get('page_index')));
return new Response(JSON.stringify(search_result), option);
}
/**
* 处理 id2path
* @param request 需要 id 参数
* @param gd
* @returns {Promise<Response>} 【注意】如果从前台接收的id代表的项目不在目标gd盘下，那么response会返回给前台一个空字符串""
*/
async function handleId2Path(request, gd) {
const option = {status: 200, headers: {'Access-Control-Allow-Origin': '*'}};
let form = await request.formData();
let path = await gd.findPathById(form.get('id'));
return new Response(path || '', option);
}
class googleDrive {
constructor(authConfig, order) {
// 每个盘对应一个order，对应一个gd实例
this.order = order;
this.root = authConfig.roots[order];
this.root.protect_file_link = this.root.protect_file_link || false;
this.url_path_prefix = `/${order}:`;
this.authConfig = authConfig;
// TODO: 这些缓存的失效刷新策略，后期可以制定一下
// path id
this.paths = [];
// path file
this.files = [];
// path pass
this.passwords = [];
// id <-> path
this.id_path_cache = {};
this.id_path_cache[this.root['id']] = '/';
this.paths["/"] = this.root['id'];
/*if (this.root['pass'] != "") {
this.passwords['/'] = this.root['pass'];
}*/
// this.init();
}
/**
* 初次授权；然后获取 user_drive_real_root_id
* @returns {Promise<void>}
*/
async init() {
await this.accessToken();
/*await (async () => {
// 只获取1次
if (authConfig.user_drive_real_root_id) return;
const root_obj = await (gds[0] || this).findItemById('root');
if (root_obj && root_obj.id) {
authConfig.user_drive_real_root_id = root_obj.id
}
})();*/
// 等待 user_drive_real_root_id ，只获取1次
if (authConfig.user_drive_real_root_id) return;
const root_obj = await (gds[0] || this).findItemById('root');
if (root_obj && root_obj.id) {
authConfig.user_drive_real_root_id = root_obj.id
}
}
/**
* 获取根目录类型，设置到 root_type
* @returns {Promise<void>}
*/
async initRootType() {
const root_id = this.root['id'];
const types = CONSTS.gd_root_type;
if (root_id === 'root' || root_id === authConfig.user_drive_real_root_id) {
this.root_type = types.user_drive;
} else {
const obj = await this.getShareDriveObjById(root_id);
this.root_type = obj ? types.share_drive : types.sub_folder;
}
}
/**
* Returns a response that requires authorization, or null
* @param request
* @returns {Response|null}
*/
basicAuthResponse(request) {
const user = this.root.user || '',
pass = this.root.pass || '',
_401 = new Response('Unauthorized', {
headers: {'WWW-Authenticate': `Basic realm="goindex:drive:${this.order}"`},
status: 401
});
if (user || pass) {
const auth = request.headers.get('Authorization')
if (auth) {
try {
const [received_user, received_pass] = atob(auth.split(' ').pop()).split(':');
return (received_user === user && received_pass === pass) ? null : _401;
} catch (e) {
}
}
} else return null;
return _401;
}
async down(id, range = '', inline = false) {
let url = `https://www.googleapis.com/drive/v3/files/${id}?alt=media`;
let requestOption = await this.requestOption();
requestOption.headers['Range'] = range;
let res = await fetch(url, requestOption);
const {headers} = res = new Response(res.body, res)
this.authConfig.enable_cors_file_down && headers.append('Access-Control-Allow-Origin', '*');
inline === true && headers.set('Content-Disposition', 'inline');
return res;
}
async file(path) {
if (typeof this.files[path] == 'undefined') {
this.files[path] = await this._file(path);
}
return this.files[path];
}
async _file(path) {
let arr = path.split('/');
let name = arr.pop();
name = decodeURIComponent(name).replace(/\'/g, "\\'");
let dir = arr.join('/') + '/';
// console.log(name, dir);
let parent = await this.findPathId(dir);
// console.log(parent);
let url = 'https://www.googleapis.com/drive/v3/files';
let params = {'includeItemsFromAllDrives': true, 'supportsAllDrives': true};
params.q = `'${parent}' in parents and name = '${name}' and trashed = false`;
params.fields = "files(id, name, mimeType, size ,createdTime, modifiedTime, iconLink, thumbnailLink)";
url += '?' + this.enQuery(params);
let requestOption = await this.requestOption();
let response = await fetch(url, requestOption);
let obj = await response.json();
// console.log(obj);
return obj.files[0];
}
// 通过reqeust cache 来缓存
async list(path, page_token = null, page_index = 0) {
if (this.path_children_cache == undefined) {
// { <path> :[ {nextPageToken:'',data:{}}, {nextPageToken:'',data:{}} ...], ...}
this.path_children_cache = {};
}
if (this.path_children_cache[path]
&& this.path_children_cache[path][page_index]
&& this.path_children_cache[path][page_index].data
) {
let child_obj = this.path_children_cache[path][page_index];
return {
nextPageToken: child_obj.nextPageToken || null,
curPageIndex: page_index,
data: child_obj.data
};
}
let id = await this.findPathId(path);
let result = await this._ls(id, page_token, page_index);
let data = result.data;
// 对有多页的，进行缓存
if (result.nextPageToken && data.files) {
if (!Array.isArray(this.path_children_cache[path])) {
this.path_children_cache[path] = []
}
this.path_children_cache[path][Number(result.curPageIndex)] = {
nextPageToken: result.nextPageToken,
data: data
};
}
return result
}
async _ls(parent, page_token = null, page_index = 0) {
// console.log("_ls", parent);
if (parent == undefined) {
return null;
}
let obj;
let params = {'includeItemsFromAllDrives': true, 'supportsAllDrives': true};
params.q = `'${parent}' in parents and trashed = false AND name !='.password'`;
params.orderBy = 'folder,name,modifiedTime desc';
params.fields = "nextPageToken, files(id, name, mimeType, size , modifiedTime)";
params.pageSize = this.authConfig.files_list_page_size;
if (page_token) {
params.pageToken = page_token;
}
let url = 'https://www.googleapis.com/drive/v3/files';
url += '?' + this.enQuery(params);
let requestOption = await this.requestOption();
let response = await fetch(url, requestOption);
obj = await response.json();
return {
nextPageToken: obj.nextPageToken || null,
curPageIndex: page_index,
data: obj
};
/*do {
if (pageToken) {
params.pageToken = pageToken;
}
let url = 'https://www.googleapis.com/drive/v3/files';
url += '?' + this.enQuery(params);
let requestOption = await this.requestOption();
let response = await fetch(url, requestOption);
obj = await response.json();
files.push(...obj.files);
pageToken = obj.nextPageToken;
} while (pageToken);*/
}
async password(path) {
if (this.passwords[path] !== undefined) {
return this.passwords[path];
}
// console.log("load", path, ".password", this.passwords[path]);
let file = await this.file(path + '.password');
if (file == undefined) {
this.passwords[path] = null;
} else {
let url = `https://www.googleapis.com/drive/v3/files/${file.id}?alt=media`;
let requestOption = await this.requestOption();
let response = await this.fetch200(url, requestOption);
this.passwords[path] = await response.text();
}
return this.passwords[path];
}
/**
* 通过 id 获取 share drive 信息
* @param any_id
* @returns {Promise<null|{id}|any>} 任何非正常情况都返回 null
*/
async getShareDriveObjById(any_id) {
if (!any_id) return null;
if ('string' !== typeof any_id) return null;
let url = `https://www.googleapis.com/drive/v3/drives/${any_id}`;
let requestOption = await this.requestOption();
let res = await fetch(url, requestOption);
let obj = await res.json();
if (obj && obj.id) return obj;
return null
}
/**
* 搜索
* @returns {Promise<{data: null, nextPageToken: null, curPageIndex: number}>}
*/
async search(origin_keyword, page_token = null, page_index = 0) {
const types = CONSTS.gd_root_type;
const is_user_drive = this.root_type === types.user_drive;
const is_share_drive = this.root_type === types.share_drive;
const empty_result = {
nextPageToken: null,
curPageIndex: page_index,
data: null
};
if (!is_user_drive && !is_share_drive) {
return empty_result;
}
let keyword = FUNCS.formatSearchKeyword(origin_keyword);
if (!keyword) {
// 关键词为空，返回
return empty_result;
}
let words = keyword.split(/\s+/);
let name_search_str = `name contains '${words.join("' AND name contains '")}'`;
// corpora 为 user 是个人盘 ，为 drive 是团队盘。配合 driveId
let params = {};
if (is_user_drive) {
params.corpora = 'user'
}
if (is_share_drive) {
params.corpora = 'drive';
params.driveId = this.root.id;
// This parameter will only be effective until June 1, 2020. Afterwards shared drive items will be included in the results.
params.includeItemsFromAllDrives = true;
params.supportsAllDrives = true;
}
if (page_token) {
params.pageToken = page_token;
}
params.q = `trashed = false AND name !='.password' AND (${name_search_str})`;
params.fields = "nextPageToken, files(id, name, mimeType, size , modifiedTime)";
params.pageSize = this.authConfig.search_result_list_page_size;
// params.orderBy = 'folder,name,modifiedTime desc';
let url = 'https://www.googleapis.com/drive/v3/files';
url += '?' + this.enQuery(params);
// console.log(params)
let requestOption = await this.requestOption();
let response = await fetch(url, requestOption);
let res_obj = await response.json();
return {
nextPageToken: res_obj.nextPageToken || null,
curPageIndex: page_index,
data: res_obj
};
}
/**
* 一层一层的向上获取这个文件或文件夹的上级文件夹的 file 对象。注意：会很慢！！！
* 最多向上寻找到当前 gd 对象的根目录 (root id)
* 只考虑一条单独的向上链。
* 【注意】如果此id代表的项目不在目标gd盘下，那么此函数会返回null
*
* @param child_id
* @param contain_myself
* @returns {Promise<[]>}
*/
async findParentFilesRecursion(child_id, contain_myself = true) {
const gd = this;
const gd_root_id = gd.root.id;
const user_drive_real_root_id = authConfig.user_drive_real_root_id;
const is_user_drive = gd.root_type === CONSTS.gd_root_type.user_drive;
// 自下向上查询的终点目标id
const target_top_id = is_user_drive ? user_drive_real_root_id : gd_root_id;
const fields = CONSTS.default_file_fields;
// [{},{},...]
const parent_files = [];
let meet_top = false;
async function addItsFirstParent(file_obj) {
if (!file_obj) return;
if (!file_obj.parents) return;
if (file_obj.parents.length < 1) return;
// ['','',...]
let p_ids = file_obj.parents;
if (p_ids && p_ids.length > 0) {
// its first parent
const first_p_id = p_ids[0];
if (first_p_id === target_top_id) {
meet_top = true;
return;
}
const p_file_obj = await gd.findItemById(first_p_id);
if (p_file_obj && p_file_obj.id) {
parent_files.push(p_file_obj);
await addItsFirstParent(p_file_obj);
}
}
}
const child_obj = await gd.findItemById(child_id);
if (contain_myself) {
parent_files.push(child_obj);
}
await addItsFirstParent(child_obj);
return meet_top ? parent_files : null
}
/**
* 获取相对于本盘根目录的path
* @param child_id
* @returns {Promise<string>} 【注意】如果此id代表的项目不在目标gd盘下，那么此方法会返回空字符串""
*/
async findPathById(child_id) {
if (this.id_path_cache[child_id]) {
return this.id_path_cache[child_id];
}
const p_files = await this.findParentFilesRecursion(child_id);
if (!p_files || p_files.length < 1) return '';
let cache = [];
// 把查出来的每一级的path和id都缓存一下
p_files.forEach((value, idx) => {
const is_folder = idx === 0 ? (p_files[idx].mimeType === CONSTS.folder_mime_type) : true;
let path = '/' + p_files.slice(idx).map(it => it.name).reverse().join('/');
if (is_folder) path += '/';
cache.push({id: p_files[idx].id, path: path})
});
cache.forEach((obj) => {
this.id_path_cache[obj.id] = obj.path;
this.paths[obj.path] = obj.id
});
/*const is_folder = p_files[0].mimeType === CONSTS.folder_mime_type;
let path = '/' + p_files.map(it => it.name).reverse().join('/');
if (is_folder) path += '/';*/
return cache[0].path;
}
// 根据id获取file item
async findItemById(id) {
const is_user_drive = this.root_type === CONSTS.gd_root_type.user_drive;
let url = `https://www.googleapis.com/drive/v3/files/${id}?fields=${CONSTS.default_file_fields}${is_user_drive ? '' : '&supportsAllDrives=true'}`;
let requestOption = await this.requestOption();
let res = await fetch(url, requestOption);
return await res.json()
}
async findPathId(path) {
let c_path = '/';
let c_id = this.paths[c_path];
let arr = path.trim('/').split('/');
for (let name of arr) {
c_path += name + '/';
if (typeof this.paths[c_path] == 'undefined') {
let id = await this._findDirId(c_id, name);
this.paths[c_path] = id;
}
c_id = this.paths[c_path];
if (c_id == undefined || c_id == null) {
break;
}
}
// console.log(this.paths);
return this.paths[path];
}
async _findDirId(parent, name) {
name = decodeURIComponent(name).replace(/\'/g, "\\'");
// console.log("_findDirId", parent, name);
if (parent == undefined) {
return null;
}
let url = 'https://www.googleapis.com/drive/v3/files';
let params = {'includeItemsFromAllDrives': true, 'supportsAllDrives': true};
params.q = `'${parent}' in parents and mimeType = 'application/vnd.google-apps.folder' and name = '${name}' and trashed = false`;
params.fields = "nextPageToken, files(id, name, mimeType)";
url += '?' + this.enQuery(params);
let requestOption = await this.requestOption();
let response = await fetch(url, requestOption);
let obj = await response.json();
if (obj.files[0] == undefined) {
return null;
}
return obj.files[0].id;
}
async accessToken() {
console.log("accessToken");
if (this.authConfig.expires == undefined || this.authConfig.expires < Date.now()) {
const obj = await this.fetchAccessToken();
if (obj.access_token != undefined) {
this.authConfig.accessToken = obj.access_token;
this.authConfig.expires = Date.now() + 3500 * 1000;
}
}
return this.authConfig.accessToken;
}
async fetchAccessToken() {
console.log("fetchAccessToken");
const url = "https://www.googleapis.com/oauth2/v4/token";
const headers = {
'Content-Type': 'application/x-www-form-urlencoded'
};
const post_data = {
'client_id': this.authConfig.client_id,
'client_secret': this.authConfig.client_secret,
'refresh_token': this.authConfig.refresh_token,
'grant_type': 'refresh_token'
}
let requestOption = {
'method': 'POST',
'headers': headers,
'body': this.enQuery(post_data)
};
const response = await fetch(url, requestOption);
return await response.json();
}
async fetch200(url, requestOption) {
let response;
for (let i = 0; i < 3; i++) {
response = await fetch(url, requestOption);
console.log(response.status);
if (response.status != 403) {
break;
}
await this.sleep(800 * (i + 1));
}
return response;
}
async requestOption(headers = {}, method = 'GET') {
const accessToken = await this.accessToken();
headers['authorization'] = 'Bearer ' + accessToken;
return {'method': method, 'headers': headers};
}
enQuery(data) {
const ret = [];
for (let d in data) {
ret.push(encodeURIComponent(d) + '=' + encodeURIComponent(data[d]));
}
return ret.join('&');
}
sleep(ms) {
return new Promise(function (resolve, reject) {
let i = 0;
setTimeout(function () {
console.log('sleep' + ms);
i++;
if (i >= 2) reject(new Error('i>=2'));
else resolve(i);
}, ms);
})
}
}
String.prototype.trim = function (char) {
if (char) {
return this.replace(new RegExp('^\\' + char + '+|\\' + char + '+$', 'g'), '');
}
return this.replace(/^\s+|\s+$/g, '');
};
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