/
permission_verify.ts
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/
permission_verify.ts
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// gm api 权限验证
import Cache from "@App/app/cache";
import { Permission, PermissionDAO } from "@App/app/repo/permission";
import { Script } from "@App/app/repo/scripts";
import CacheKey from "@App/pkg/utils/cache_key";
import { v4 as uuidv4 } from "uuid";
import MessageQueue from "@App/pkg/utils/message_queue";
import IoC from "@App/app/ioc";
import { MessageHander } from "@App/app/message/message";
import { Api, Request } from "./gm_api";
export interface ConfirmParam {
// 权限名
permission: string;
// 权限值
permissionValue?: string;
// 确认权限标题
title?: string;
// 权限详情内容
metadata?: { [key: string]: string };
// 权限描述
describe?: string;
// 是否通配
wildcard?: boolean;
// 权限内容
permissionContent?: string;
}
export interface UserConfirm {
allow: boolean;
type: number; // 1: 允许一次 2: 临时允许全部 3: 临时允许此 4: 永久允许全部 5: 永久允许此
}
export interface ApiParam {
// 默认提供的函数
default?: boolean;
// 是否只有后台环境中才能执行
background?: boolean;
// 是否需要弹出页面让用户进行确认
confirm?: (request: Request) => Promise<boolean | ConfirmParam>;
// 监听方法
listener?: () => void;
// 别名
alias?: string[];
// 关联
link?: string;
}
export interface ApiValue {
api: Api;
param: ApiParam;
}
export interface IPermissionVerify {
verify(request: Request, api: ApiValue): Promise<boolean>;
}
export default class PermissionVerify {
static apis: Map<string, ApiValue> = new Map();
static textarea: HTMLTextAreaElement = document.createElement("textarea");
public static API(param: ApiParam = {}) {
return (
target: any,
propertyName: string,
descriptor: PropertyDescriptor
) => {
const key = propertyName;
if (param.listener) {
param.listener();
}
PermissionVerify.apis.set(key, {
api: descriptor.value,
param,
});
// 处理别名
if (param.alias) {
param.alias.forEach((alias) => {
PermissionVerify.apis.set(alias, {
api: descriptor.value,
param,
});
});
}
// 兼容GM.*
const dot = key.replace("_", ".");
if (dot !== key) {
PermissionVerify.apis.set(dot, {
api: descriptor.value,
param,
});
}
};
}
permissionDAO: PermissionDAO;
// 确认队列
confirmQueue: MessageQueue<{
request: Request;
confirm: ConfirmParam | boolean;
resolve: (value: boolean) => void;
reject: (reason: any) => void;
}> = new MessageQueue();
removePermissionCache(scriptId: number) {
// 先删除缓存
Cache.getInstance()
.list()
.forEach((key) => {
if (key.startsWith(`permission:${scriptId.toString()}:`)) {
Cache.getInstance().del(key);
}
});
}
constructor() {
this.permissionDAO = new PermissionDAO();
// 监听用户确认消息
const message = <MessageHander>IoC.instance(MessageHander);
message.setHandler(
"permissionConfirm",
(_action, data: { uuid: string; userConfirm: UserConfirm }) => {
const confirm = this.confirmMap.get(data.uuid);
if (!confirm) {
if (data.userConfirm.type === 0) {
// 忽略
return Promise.resolve(undefined);
}
return Promise.reject(new Error("confirm not found"));
}
this.confirmMap.delete(data.uuid);
confirm.resolve(data.userConfirm);
return Promise.resolve(true);
}
);
// 监听获取用户确认消息
message.setHandler("getConfirm", (_action, uuid: string) => {
const data = this.confirmMap.get(uuid);
if (!data) {
return Promise.reject(new Error("uuid not found"));
}
// 查询允许统配的有多少个相同等待确认权限
let likeNum = 0;
if (data.confirm.wildcard) {
this.confirmQueue.list.forEach((value) => {
const confirm = value.confirm as ConfirmParam;
if (
confirm.wildcard &&
value.request.scriptId === data.script.id &&
confirm.permission === data.confirm.permission
) {
likeNum += 1;
}
});
}
return Promise.resolve({
script: data.script,
confirm: data.confirm,
likeNum,
});
});
// 监听删除权限
message.setHandler(
"deletePermission",
async (_action, data: { scriptId: number; confirm: ConfirmParam }) => {
// 先删除缓存
this.removePermissionCache(data.scriptId);
// 再删除数据库
const m = await this.permissionDAO.findOne({
scriptId: data.scriptId,
permission: data.confirm.permission,
permissionValue: data.confirm.permissionValue || "",
});
if (!m) {
return Promise.resolve(true);
}
await this.permissionDAO.delete(m.id);
return Promise.resolve(true);
}
);
// 监听添加权限
message.setHandler(
"addPermission",
async (_action, data: { scriptId: number; permission: Permission }) => {
// 先删除缓存
this.removePermissionCache(data.scriptId);
// 从数据库中查询是否有此权限
const m = await this.permissionDAO.findOne({
scriptId: data.scriptId,
permission: data.permission.permission,
permissionValue: data.permission.permissionValue || "",
});
if (!m) {
// 没有添加
await this.permissionDAO.save(data.permission);
return Promise.resolve(true);
}
// 有则更新
data.permission.id = m.id;
data.permission.createtime = m.createtime;
data.permission.updatetime = new Date().getTime();
this.permissionDAO.update(m.id, data.permission);
return Promise.resolve(true);
}
);
// 监听重置权限
message.setHandler(
"resetPermission",
async (_action, data: { scriptId: number }) => {
// 先删除缓存
this.removePermissionCache(data.scriptId);
// 从数据库中查询是否有此权限
await this.permissionDAO.delete({
scriptId: data.scriptId,
});
return Promise.resolve(true);
}
);
this.dealConfirmQueue();
}
// 验证是否有权限
verify(request: Request, api: ApiValue): Promise<boolean> {
if (api.param.default) {
return Promise.resolve(true);
}
// 没有其它条件,从metadata.grant中判断
const { grant } = request.script.metadata;
if (!grant) {
return Promise.reject(new Error("grant is undefined"));
}
for (let i = 0; i < grant.length; i += 1) {
if (
// 名称相等
grant[i] === request.api ||
// 别名相等
(api.param.alias && api.param.alias.includes(grant[i])) ||
// 有关联的
grant[i] === api.param.link
) {
// 需要用户确认
if (api.param.confirm) {
return this.pushConfirmQueue(request, api);
}
return Promise.resolve(true);
}
}
return Promise.reject(new Error("permission not requested"));
}
async dealConfirmQueue() {
// 处理确认队列
const data = await this.confirmQueue.pop();
if (!data) {
this.dealConfirmQueue();
return;
}
try {
const ret = await this.confirm(data.request, data.confirm);
data.resolve(ret);
} catch (e) {
data.reject(e);
}
this.dealConfirmQueue();
}
// 确认队列,为了防止一次性打开过多的窗口
async pushConfirmQueue(request: Request, api: ApiValue): Promise<boolean> {
const confirm = await api.param.confirm!(request);
if (confirm === true) {
return Promise.resolve(true);
}
return new Promise((resolve, reject) => {
this.confirmQueue.push({ request, confirm, resolve, reject });
});
}
async confirm(
request: Request,
confirm: boolean | ConfirmParam
): Promise<boolean> {
if (typeof confirm === "boolean") {
return confirm;
}
const cacheKey = CacheKey.permissionConfirm(request.script.id, confirm);
// 从数据库中查询是否有此权限
const ret = await Cache.getInstance().getOrSet(cacheKey, async () => {
let model = await this.permissionDAO.findOne({
scriptId: request.scriptId,
permission: confirm.permission,
permissionValue: confirm.permissionValue || "",
});
if (!model) {
// 允许通配
if (confirm.wildcard) {
model = await this.permissionDAO.findOne({
scriptId: request.scriptId,
permission: confirm.permission,
permissionValue: "*",
});
}
}
return Promise.resolve(model);
});
// 有查询到结果,进入判断,不再需要用户确认
if (ret) {
if (ret.allow) {
return Promise.resolve(true);
}
// 权限拒绝
return Promise.reject(new Error("permission denied"));
}
// 没有权限,则弹出页面让用户进行确认
const userConfirm = await this.confirmWindow(request.script, confirm);
// 成功存入数据库
const model = {
id: 0,
scriptId: request.scriptId,
permission: confirm.permission,
permissionValue: "",
allow: userConfirm.allow,
createtime: new Date().getTime(),
updatetime: 0,
};
switch (userConfirm.type) {
case 4:
case 2: {
// 通配
model.permissionValue = "*";
break;
}
case 5:
case 3: {
model.permissionValue = confirm.permissionValue || "";
break;
}
default:
break;
}
// 临时 放入缓存
if (userConfirm.type >= 2) {
Cache.getInstance().set(cacheKey, model);
}
// 总是 放入数据库
if (userConfirm.type >= 4) {
const oldConfirm = await this.permissionDAO.findOne({
scriptId: request.scriptId,
permission: model.permission,
permissionValue: model.permissionValue,
});
if (!oldConfirm) {
await this.permissionDAO.save(model);
} else {
await this.permissionDAO.update(oldConfirm.id, model);
}
}
if (userConfirm.allow) {
return Promise.resolve(true);
}
return Promise.reject(new Error("permission not allowed"));
}
// 确认map
confirmMap: Map<
string,
{
confirm: ConfirmParam;
script: Script;
resolve: (value: UserConfirm) => void;
reject: (reason: any) => void;
}
> = new Map();
// 弹出窗口让用户进行确认
async confirmWindow(
script: Script,
confirm: ConfirmParam
): Promise<UserConfirm> {
return new Promise((resolve, reject) => {
const uuid = uuidv4();
// 超时处理
const timeout = setTimeout(() => {
this.confirmMap.delete(uuid);
reject(new Error("permission confirm timeout"));
}, 40 * 1000);
// 保存到map中
this.confirmMap.set(uuid, {
confirm,
script,
resolve: (value: UserConfirm) => {
clearTimeout(timeout);
resolve(value);
},
reject,
});
// 打开窗口
chrome.tabs.create({
url: chrome.runtime.getURL(`src/confirm.html?uuid=${uuid}`),
});
});
}
}