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index.js
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index.js
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const authConfig = {
"siteName": "Google Drive Index",
"siteIcon": "https://raw.githubusercontent.com/sawankumar/Google-Drive-Index-III/master/images/favicon.png",
"version": "4.28",
"client_id": "202264815644.apps.googleusercontent.com",
"client_secret": "X4Z3ca8xfWDb1Voo-F9a7ZxJ",
"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: "Personal Drive",
},
{
id: "drive_id",
name: "Personal Drive II",
user: 'username',
pass: "password",
}
],
"files_list_page_size": 500,
"search_result_list_page_size": 50,
"enable_cors_file_down": false,
"enable_password_file_verify": false
};
/**
* web ui
*/
const uiConfig = {
"theme": "material", // DO NOT set it to classic
"dark_mode": false, // DO NOT set it to true, Not working yet
"main_color": "blue-grey",
"accent_color": "blue",
"fluid_navigation_bar": true,
"avatar": "https://raw.githubusercontent.com/sawankumar/Google-Drive-Index-III/master/images/avatar.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/sawankumar/Google-Drive-Index-III@master/app.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)
}
// This operation is parallel to improve efficiency
let tasks = [];
gds.forEach(gd => {
tasks.push(gd.initRootType());
});
for (let task of tasks) {
await task;
}
}
// Extract drive order from path
// And get the corresponding gd instance according to drive order
let gd;
let url = new URL(request.url);
let path = url.pathname;
/**
* Redirect to start page
* @returns {Response}
*/
function redirectToIndexPage() {
return new Response('', {status: 301, headers: {'Location': `${url.origin}/0:/`}});
}
if (path == '/') return redirectToIndexPage();
if (path.toLowerCase() == '/favicon.ico') {
// You can find a favicon later
return new Response('', {status: 404})
}
// Special command format
const command_reg = /^\/(?<num>\d+):(?<command>[a-zA-Z0-9]+)$/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;
// search for
if (command === 'search') {
if (request.method === 'POST') {
// search results
return handleSearch(request, gd);
} else {
const params = url.searchParams;
// Search page
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)
}
}
// Expected path format
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();
// This can increase the speed when listing the directory for the first time. The disadvantage is that if password verification fails, the overhead of listing directories will still be incurred
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));
}
}
// Processing 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);
}
/**
* Handle id2path
* @param request 需要 id 参数
* @param gd
* @returns {Promise<Response>} [Note] If the item represented by the id received from the front desk is not under the target gd disk, the response will return an empty string to the front desk""
*/
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) {
// Each disk corresponds to an order, corresponding to a gd instance
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: These cache invalidation refresh strategies can be formulated later
// 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();
}
/**
* Initial authorization; then obtain user_drive_real_root_id
* @returns {Promise<void>}
*/
async init() {
await this.accessToken();
/*await (async () => {
// Only get 1 time
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
}
})();*/
// Wait for user_drive_real_root_id, only get 1 time
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
}
}
/**
* Get the root directory type, set to 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];
}
// Cache through reqeust cache
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;
// Cache for multiple pages
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];
}
/**
* Get share drive information by id
* @param any_id
* @returns {Promise<null|{id}|any>} Any abnormal situation returns 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/${any_id}`;
let requestOption = await this.requestOption();
let res = await fetch(url, requestOption);
let obj = await res.json();
if (obj && obj.id) return obj;
return null
}
/**
* search for
* @returns {Promise<{data: null, nextPageToken: null, curPageIndex: number}>}
*/
async search(origin_keyword, page_token = null, page_index = 0) {
const types = CONSTS.gd_root_type;
const is_user_drive = this.root_type === types.user_drive;
const is_share_drive = this.root_type === types.share_drive;
const empty_result = {
nextPageToken: null,
curPageIndex: page_index,
data: null
};
if (!is_user_drive && !is_share_drive) {
return empty_result;
}
let keyword = FUNCS.formatSearchKeyword(origin_keyword);
if (!keyword) {
// Keyword is empty, return
return empty_result;
}
let words = keyword.split(/\s+/);
let name_search_str = `name contains '${words.join("' AND name contains '")}'`;
// For corpora, user is a personal disk, and drive is a team disk. Match 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
};
}
/**
* Get the file object of the parent folder of this file or folder one by one upwards. Note: it will be slow! ! !
* Find up to the root directory of the current gd object (root id)
* Only consider a single upward chain.
* [Note] If the item represented by this id is not in the target gd disk, then this function will return 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;
// End goal id for bottom-up query
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
}
/**
* Get the path relative to the root directory of the disk
* @param child_id
* @returns {Promise<string>} [Note] If the item represented by this id is not under the target gd disk, then this method will return an empty string ""
*/
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 = [];
// Cache the path and id of each level found
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;
}
// Get file item according to id
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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