perf: Add support for sending http requests using specific nodes

Only supported on Loon & Surge

backend/package.json

@@ -1,6 +1,6 @@
 {
   "name": "sub-store",
-  "version": "2.12.0",
+  "version": "2.12.5",
   "description": "Advanced Subscription Manager for QX, Loon, Surge, Stash and ShadowRocket.",
   "main": "src/main.js",
   "scripts": {
@@ -19,6 +19,7 @@
     "js-base64": "^3.7.2",
     "lodash": "^4.17.21",
     "request": "^2.88.2",
+    "requests": "^0.3.0",
     "semver": "^7.3.7",
     "static-js-yaml": "^1.0.0",
     "uuid": "^8.3.2"

backend/pnpm-lock.yaml

@@ -31,6 +31,7 @@ specifiers:
   prettier: 2.6.2
   prettier-plugin-sort-imports: ^1.6.1
   request: ^2.88.2
+  requests: ^0.3.0
   semver: ^7.3.7
   static-js-yaml: ^1.0.0
   tinyify: ^3.0.0
@@ -43,6 +44,7 @@ dependencies:
   js-base64: registry.npmmirror.com/js-base64/3.7.2
   lodash: registry.npmmirror.com/lodash/4.17.21
   request: registry.npmmirror.com/request/2.88.2
+  requests: registry.npmmirror.com/requests/0.3.0
   semver: registry.npmmirror.com/semver/7.3.7
   static-js-yaml: registry.npmmirror.com/static-js-yaml/1.0.0
   uuid: registry.npmmirror.com/uuid/8.3.2
@@ -2250,6 +2252,12 @@ packages:
       follow-redirects: registry.npmmirror.com/follow-redirects/1.13.0
     dev: true
 
+  registry.npmmirror.com/axo/0.0.2:
+    resolution: {integrity: sha512-8CC4Mb+OhK97UEng0PgiqUDNZjzVcWDsV+G2vLYCQn1jEL7y6VqiRVlZlRu+aA/ckSznmNzW6X1I6nj2As/haQ==, registry: http://registry.npm.taobao.org/, tarball: https://registry.npmmirror.com/axo/-/axo-0.0.2.tgz}
+    name: axo
+    version: 0.0.2
+    dev: false
+
   registry.npmmirror.com/babel-plugin-dynamic-import-node/2.3.3:
     resolution: {integrity: sha512-jZVI+s9Zg3IqA/kdi0i6UDCybUI3aSBLnglhYbSSjKlV7yF1F/5LWv8MakQmvYpnbJDS6fcBL2KzHSxNCMtWSQ==, registry: http://registry.npm.taobao.org/, tarball: https://registry.npmmirror.com/babel-plugin-dynamic-import-node/-/babel-plugin-dynamic-import-node-2.3.3.tgz}
     name: babel-plugin-dynamic-import-node
@@ -4296,6 +4304,12 @@ packages:
       es5-ext: registry.npmmirror.com/es5-ext/0.10.61
     dev: true
 
+  registry.npmmirror.com/eventemitter3/4.0.7:
+    resolution: {integrity: sha512-8guHBZCwKnFhYdHr2ysuRWErTwhoN2X8XELRlrRwpmfeY2jjuUN4taQMsULKUVo1K4DvZl+0pgfyoysHxvmvEw==, registry: http://registry.npm.taobao.org/, tarball: https://registry.npmmirror.com/eventemitter3/-/eventemitter3-4.0.7.tgz}
+    name: eventemitter3
+    version: 4.0.7
+    dev: false
+
   registry.npmmirror.com/events/3.3.0:
     resolution: {integrity: sha512-mQw+2fkQbALzQ7V0MY0IqdnXNOeTtP4r0lN9z7AAawCXgqea7bDii20AYrIBrFd/Hx0M2Ocz6S111CaFkUcb0Q==, registry: http://registry.npm.taobao.org/, tarball: https://registry.npmmirror.com/events/-/events-3.3.0.tgz}
     name: events
@@ -4410,6 +4424,12 @@ packages:
     name: extend
     version: 3.0.2
 
+  registry.npmmirror.com/extendible/0.1.1:
+    resolution: {integrity: sha512-AglckQA0TJV8/ZmhQcNmaaFcFFPXFIoZbfuoQOlGDK7Jh/roWotYzJ7ik1FBBCHBr8n7CgTR8lXXPAN8Rfb7rw==, registry: http://registry.npm.taobao.org/, tarball: https://registry.npmmirror.com/extendible/-/extendible-0.1.1.tgz}
+    name: extendible
+    version: 0.1.1
+    dev: false
+
   registry.npmmirror.com/extglob/2.0.4:
     resolution: {integrity: sha512-Nmb6QXkELsuBr24CJSkilo6UHHgbekK5UiZgfE6UHD3Eb27YC6oD+bhcT+tJ6cl8dmsgdQxnWlcry8ksBIBLpw==, registry: http://registry.npm.taobao.org/, tarball: https://registry.npmmirror.com/extglob/-/extglob-2.0.4.tgz}
     name: extglob
@@ -4435,6 +4455,12 @@ packages:
     engines: {'0': node >=0.6.0}
     dev: false
 
+  registry.npmmirror.com/failure/1.1.1:
+    resolution: {integrity: sha512-lzrrk0NUfjVeU3jLmfU01zP5bfg4XVFxHREYGvgJowaCqHLSQtqIGENH/CU+oSs6yfYObdSM7b9UY/3p2VJOSg==, registry: http://registry.npm.taobao.org/, tarball: https://registry.npmmirror.com/failure/-/failure-1.1.1.tgz}
+    name: failure
+    version: 1.1.1
+    dev: false
+
   registry.npmmirror.com/falafel/2.2.5:
     resolution: {integrity: sha512-HuC1qF9iTnHDnML9YZAdCDQwT0yKl/U55K4XSUXqGAA2GLoafFgWRqdAbhWJxXaYD4pyoVxAJ8wH670jMpI9DQ==, registry: http://registry.npm.taobao.org/, tarball: https://registry.npmmirror.com/falafel/-/falafel-2.2.5.tgz}
     name: falafel
@@ -5219,6 +5245,12 @@ packages:
       glogg: registry.npmmirror.com/glogg/1.0.2
     dev: true
 
+  registry.npmmirror.com/hang/1.0.0:
+    resolution: {integrity: sha512-vtBz98Bt/Tbm03cZO5Ymc7ZL8ead/jIx9T5Wg/xuz+9BXPAJNJSdGQW63LoaesogUQKTpHyal339hxTaTf/APg==, registry: http://registry.npm.taobao.org/, tarball: https://registry.npmmirror.com/hang/-/hang-1.0.0.tgz}
+    name: hang
+    version: 1.0.0
+    dev: false
+
   registry.npmmirror.com/har-schema/2.0.0:
     resolution: {integrity: sha512-Oqluz6zhGX8cyRaTQlFMPw80bSJVG2x/cFb8ZPhUILGgHka9SsokCCOQgpveePerqidZOrT14ipqfJb7ILcW5Q==, registry: http://registry.npm.taobao.org/, tarball: https://registry.npmmirror.com/har-schema/-/har-schema-2.0.0.tgz}
     name: har-schema
@@ -6336,6 +6368,17 @@ packages:
       strip-bom: registry.npmmirror.com/strip-bom/2.0.0
     dev: true
 
+  registry.npmmirror.com/loads/0.0.4:
+    resolution: {integrity: sha512-XjPzzYIHkuMNqYyvh6AECQAHi682nyKO9TMdMYnaz7QbPDI/KIeSIjRhAlXIbRMPYAgtLUYgPlD3mtKZ4Q8SYA==, registry: http://registry.npm.taobao.org/, tarball: https://registry.npmmirror.com/loads/-/loads-0.0.4.tgz}
+    name: loads
+    version: 0.0.4
+    dependencies:
+      failure: registry.npmmirror.com/failure/1.1.1
+      one-time: registry.npmmirror.com/one-time/0.0.4
+      xhr-response: registry.npmmirror.com/xhr-response/1.0.1
+      xhr-status: registry.npmmirror.com/xhr-status/1.0.1
+    dev: false
+
   registry.npmmirror.com/locate-path/3.0.0:
     resolution: {integrity: sha512-7AO748wWnIhNqAuaty2ZWHkQHRSNfPVIsPIfwEOWO22AmaoVrWavlOcMR5nzTLNYvp36X220/maaRsrec1G65A==, registry: http://registry.npm.taobao.org/, tarball: https://registry.npmmirror.com/locate-path/-/locate-path-3.0.0.tgz}
     name: locate-path
@@ -6876,6 +6919,12 @@ packages:
       semver: registry.npmmirror.com/semver/5.7.1
     dev: true
 
+  registry.npmmirror.com/node-http-xhr/1.3.4:
+    resolution: {integrity: sha512-0bA08/2RKWxw6pMkOVd3KP+0F5+ifQLMMTDxrCgxlgkoU1N8DhCbCSAYEqpgaVYM2smvbVVewiXjW+8AyoLfxQ==, registry: http://registry.npm.taobao.org/, tarball: https://registry.npmmirror.com/node-http-xhr/-/node-http-xhr-1.3.4.tgz}
+    name: node-http-xhr
+    version: 1.3.4
+    dev: false
+
   registry.npmmirror.com/node-releases/2.0.4:
     resolution: {integrity: sha512-gbMzqQtTtDz/00jQzZ21PQzdI9PyLYqUSvD0p3naOhX4odFji0ZxYdnVwPTxmSwkmxhcFImpozceidSG+AgoPQ==, registry: http://registry.npm.taobao.org/, tarball: https://registry.npmmirror.com/node-releases/-/node-releases-2.0.4.tgz}
     name: node-releases
@@ -7110,6 +7159,12 @@ packages:
       wrappy: registry.npmmirror.com/wrappy/1.0.2
     dev: true
 
+  registry.npmmirror.com/one-time/0.0.4:
+    resolution: {integrity: sha512-qAMrwuk2xLEutlASoiPiAMW3EN3K96Ka/ilSXYr6qR1zSVXw2j7+yDSqGTC4T9apfLYxM3tLLjKvgPdAUK7kYQ==, registry: http://registry.npm.taobao.org/, tarball: https://registry.npmmirror.com/one-time/-/one-time-0.0.4.tgz}
+    name: one-time
+    version: 0.0.4
+    dev: false
+
   registry.npmmirror.com/optionator/0.8.3:
     resolution: {integrity: sha512-+IW9pACdk3XWmmTXG8m3upGUJst5XRGzxMRjXzAuJ1XnIFNvfhjjIuYkDvysnPQ7qzqVzLt78BCruntqRhWQbA==, registry: http://registry.npm.taobao.org/, tarball: https://registry.npmmirror.com/optionator/-/optionator-0.8.3.tgz}
     name: optionator
@@ -8057,6 +8112,20 @@ packages:
       uuid: registry.npmmirror.com/uuid/3.4.0
     dev: false
 
+  registry.npmmirror.com/requests/0.3.0:
+    resolution: {integrity: sha512-1B6nkiHjC1O1cSgFhEwkc+xd8vuj04h7xSmCg5yI8nmhCIKbPkX47od8erQ2pokBt5qxUO7dwP4jplXD6k6ISA==, registry: http://registry.npm.taobao.org/, tarball: https://registry.npmmirror.com/requests/-/requests-0.3.0.tgz}
+    name: requests
+    version: 0.3.0
+    dependencies:
+      axo: registry.npmmirror.com/axo/0.0.2
+      eventemitter3: registry.npmmirror.com/eventemitter3/4.0.7
+      extendible: registry.npmmirror.com/extendible/0.1.1
+      hang: registry.npmmirror.com/hang/1.0.0
+      loads: registry.npmmirror.com/loads/0.0.4
+      node-http-xhr: registry.npmmirror.com/node-http-xhr/1.3.4
+      xhr-send: registry.npmmirror.com/xhr-send/1.0.0
+    dev: false
+
   registry.npmmirror.com/require-directory/2.1.1:
     resolution: {integrity: sha512-fGxEI7+wsG9xrvdjsrlmL22OMTTiHRwAMroiEeMgq8gzoLC/PQr7RsRDSTLUg/bZAZtF+TVIkHc6/4RIKrui+Q==, registry: http://registry.npm.taobao.org/, tarball: https://registry.npmmirror.com/require-directory/-/require-directory-2.1.1.tgz}
     name: require-directory
@@ -9731,6 +9800,24 @@ packages:
     engines: {node: '>=8'}
     dev: true
 
+  registry.npmmirror.com/xhr-response/1.0.1:
+    resolution: {integrity: sha512-m2FlVRCl3VqDcpc8UaWZJpwuHpFR2vYeXv6ipXU2Uuu4vNKFYVEFI0emuJN370Fge+JCbiAnS+JJmSoWVmWrjQ==, registry: http://registry.npm.taobao.org/, tarball: https://registry.npmmirror.com/xhr-response/-/xhr-response-1.0.1.tgz}
+    name: xhr-response
+    version: 1.0.1
+    dev: false
+
+  registry.npmmirror.com/xhr-send/1.0.0:
+    resolution: {integrity: sha512-789EG4qW6Z0nPvG74AV3WWQCnBG5HxJXNiBsnEivZ8OpbvVA0amH0+g+MNT99o5kt/XLdRezm5KS1wJzcGJztw==, registry: http://registry.npm.taobao.org/, tarball: https://registry.npmmirror.com/xhr-send/-/xhr-send-1.0.0.tgz}
+    name: xhr-send
+    version: 1.0.0
+    dev: false
+
+  registry.npmmirror.com/xhr-status/1.0.1:
+    resolution: {integrity: sha512-VF0WSqtmkf56OmF26LCWsWvRb1a+WYGdHDoQnPPCVUQTM8CVUAOBcUDsm7nP7SQcgEEdrvF4DmhEADuXdGieyw==, registry: http://registry.npm.taobao.org/, tarball: https://registry.npmmirror.com/xhr-status/-/xhr-status-1.0.1.tgz}
+    name: xhr-status
+    version: 1.0.1
+    dev: false
+
   registry.npmmirror.com/xtend/2.1.2:
     resolution: {integrity: sha512-vMNKzr2rHP9Dp/e1NQFnLQlwlhp9L/LfvnsVdHxN1f+uggyVI3i08uD14GPvCToPkdsRfyPqIyYGmIk58V98ZQ==, registry: http://registry.npm.taobao.org/, tarball: https://registry.npmmirror.com/xtend/-/xtend-2.1.2.tgz}
     name: xtend

backend/src/core/proxy-utils/index.js

@@ -50,6 +50,7 @@ function parse(raw) {
                     lastParser = parser;
                     success = true;
                     $.info(`${parser.name} is activated`);
+                    break;
                 }
             }
         }

backend/src/core/proxy-utils/parsers/index.js

@@ -112,8 +112,11 @@ function URI_SSR() {
         line = line.split('/?')[1].split('&');
         if (line.length > 1) {
             for (const item of line) {
-                const [key, val] = item.split('=');
-                other_params[key] = val.trim();
+                let [key, val] = item.split('=');
+                val = val.trim();
+                if (val.length > 0) {
+                    other_params[key] = val;
+                }
             }
         }
         proxy = {
@@ -242,14 +245,17 @@ function URI_Trojan() {
         const name = decodeURIComponent(line.split('#')[1].trim());
         let paramArr = line.split('?');
         let scert = null;
-        let params;
+        const params = new Map();
         if (paramArr.length > 1) {
             paramArr = paramArr[1].split('#')[0].split('&');
-            params = new Map(
-                paramArr.map((item) => {
-                    return item.split('=');
-                }),
-            );
+            for (const pair of paramArr) {
+                let [key, val] = pair.split('=');
+                // skip empty values
+                val = val.trim();
+                if (val.length > 0) {
+                    params.set(key, val);
+                }
+            }
             if (
                 params.get('allowInsecure') === '1' ||
                 params.get('allowInsecure') === 'true'

backend/src/core/proxy-utils/processors/index.js

@@ -5,6 +5,7 @@ import { getFlag } from '@/utils/geo';
 import lodash from 'lodash';
 import $ from '@/core/app';
 import { hex_md5 } from '@/vendor/md5';
+import {ProxyUtils} from '@/core/proxy-utils';
 
 /**
  The rule "(name CONTAINS "🇨🇳") AND (port IN [80, 443])" can be expressed as follows:
@@ -631,6 +632,7 @@ function createDynamicFunction(name, script, $arguments) {
             '$persistentStore',
             '$httpClient',
             '$notification',
+            'ProxyUtils',
             `${script}\n return ${name}`,
         )(
             $arguments,
@@ -642,13 +644,15 @@ function createDynamicFunction(name, script, $arguments) {
             $httpClient,
             // eslint-disable-next-line no-undef
             $notification,
+            ProxyUtils
         );
     } else {
         return new Function(
             '$arguments',
             '$substore',
             'lodash',
+            'ProxyUtils',
             `${script}\n return ${name}`,
-        )($arguments, $, lodash);
+        )($arguments, $, lodash, ProxyUtils);
     }
 }

backend/src/core/proxy-utils/producers/loon.js

@@ -72,7 +72,7 @@ function shadowsocksr(proxy) {
 
     // obfs
     result.appendIfPresent(`,obfs=${proxy.obfs}`, 'obfs');
-    result.appendIfPresent(`,obfs-host=${proxy['obfs-param']}`, 'obfs-param');
+    result.appendIfPresent(`,obfs-param=${proxy['obfs-param']}`, 'obfs-param');
 
     // tfo
     result.appendIfPresent(`,fast-open=${proxy.tfo}`, 'tfo');

backend/src/restful/collections.js

@@ -1,5 +1,5 @@
 import { deleteByName, findByName, updateByName } from '@/utils/database';
-import { COLLECTIONS_KEY } from '@/constants';
+import { COLLECTIONS_KEY, ARTIFACTS_KEY } from '@/constants';
 import { failed, success } from '@/restful/response';
 import $ from '@/core/app';
 import { RequestInvalidError, ResourceNotFoundError } from '@/restful/errors';
@@ -67,6 +67,21 @@ function updateCollection(req, res) {
             ...collection,
         };
         $.info(`正在更新组合订阅：${name}...`);
+
+        if (name !== newCol.name) {
+            // update all artifacts referring this collection
+            const allArtifacts = $.read(ARTIFACTS_KEY) || [];
+            for (const artifact of allArtifacts) {
+                if (
+                    artifact.type === 'collection' &&
+                    artifact.source === oldCol.name
+                ) {
+                    artifact.source = newCol.name;
+                }
+            }
+            $.write(allArtifacts, ARTIFACTS_KEY);
+        }
+
         updateByName(allCols, name, newCol);
         $.write(allCols, COLLECTIONS_KEY);
         success(res, newCol);

backend/src/restful/subscriptions.js

@@ -5,7 +5,7 @@ import {
     RequestInvalidError,
 } from './errors';
 import { deleteByName, findByName, updateByName } from '@/utils/database';
-import { SUBS_KEY, COLLECTIONS_KEY } from '@/constants';
+import { SUBS_KEY, COLLECTIONS_KEY, ARTIFACTS_KEY } from '@/constants';
 import { getFlowHeaders } from '@/utils/flow';
 import { success, failed } from './response';
 import $ from '@/core/app';
@@ -137,14 +137,28 @@ function updateSubscription(req, res) {
         $.info(`正在更新订阅： ${name}`);
         // allow users to update the subscription name
         if (name !== sub.name) {
-            // we need to find out all collections refer to this name
-            const allCols = $.read(COLLECTIONS_KEY);
+            // update all collections refer to this name
+            const allCols = $.read(COLLECTIONS_KEY) || [];
             for (const collection of allCols) {
                 const idx = collection.subscriptions.indexOf(name);
                 if (idx !== -1) {
                     collection.subscriptions[idx] = sub.name;
                 }
             }
+
+            // update all artifacts referring this subscription
+            const allArtifacts = $.read(ARTIFACTS_KEY) || [];
+            for (const artifact of allArtifacts) {
+                if (
+                    artifact.type === 'subscription' &&
+                    artifact.source == name
+                ) {
+                    artifact.source = sub.name;
+                }
+            }
+
+            $.write(allCols, COLLECTIONS_KEY);
+            $.write(allArtifacts, ARTIFACTS_KEY);
         }
         updateByName(allSubs, name, newSub);
         $.write(allSubs, SUBS_KEY);

backend/src/utils/migration.js

@@ -81,7 +81,8 @@ function doMigrationV2() {
                 useless: 'DEFAULT',
             },
         };
-        processes.forEach((p) => {
+        for (const p of processes) {
+            if (!p.type) continue;
             if (p.type === 'Useless Filter') {
                 quickSettingOperator.args.useless = 'ENABLED';
             } else if (p.type === 'Set Property Operator') {
@@ -120,7 +121,7 @@ function doMigrationV2() {
             } else {
                 newProcesses.push(p);
             }
-        });
+        }
         newProcesses.unshift(quickSettingOperator);
         item.process = newProcesses;
     }

backend/src/vendor/open-api.js

@@ -253,6 +253,17 @@ export function HTTP(defaultOptions = { baseURL: '' }) {
 
         events.onRequest(method, options);
 
+        if (options.node) {
+            // Surge & Loon allow connecting to a server using a specified proxy node
+            if (isSurge) {
+                const build = $environment['surge-build'];
+                if (build && parseInt(build) >= 2407) {
+                    options['policy-descriptor'] = options.node;
+                    delete options.node;
+                }
+            }
+        }
+
         let worker;
         if (isQX) {
             worker = $task.fetch({

config/Stash.stoverride

@@ -10,7 +10,18 @@ http:
       type: request
       require-body: true
       timeout: 120
+
+cron:
+  script:
+    - name: cron-sync-artifacts
+      cron: "0 0 * * *"
+      timeout: 120
+
 script-providers:
   sub-store:
     url: https://github.com/sub-store-org/Sub-Store/releases/latest/download/sub-store.min.js
+    interval: 86400
+
+  cron-sync-artifacts:
+    url: https://github.com/sub-store-org/Sub-Store/releases/latest/download/cron-sync-artifacts.min.js
     interval: 86400

scripts/ip-flag.js

@@ -0,0 +1,151 @@
+const RESOURCE_CACHE_KEY = '#sub-store-cached-resource';
+const CACHE_EXPIRATION_TIME_MS = 10 * 60 * 1000;
+const $ = $substore;
+
+class ResourceCache {
+    constructor(expires) {
+        this.expires = expires;
+        if (!$.read(RESOURCE_CACHE_KEY)) {
+            $.write('{}', RESOURCE_CACHE_KEY);
+        }
+        this.resourceCache = JSON.parse($.read(RESOURCE_CACHE_KEY));
+        this._cleanup();
+    }
+
+    _cleanup() {
+        // clear obsolete cached resource
+        let clear = false;
+        Object.entries(this.resourceCache).forEach((entry) => {
+            const [id, updated] = entry;
+            if (new Date().getTime() - updated > this.expires) {
+                $.delete(`#${id}`);
+                delete this.resourceCache[id];
+                clear = true;
+            }
+        });
+        if (clear) this._persist();
+    }
+
+    revokeAll() {
+        Object.keys(this.resourceCache).forEach((id) => {
+            $.delete(`#${id}`);
+        });
+        this.resourceCache = {};
+        this._persist();
+    }
+
+    _persist() {
+        $.write(JSON.stringify(this.resourceCache), RESOURCE_CACHE_KEY);
+    }
+
+    get(id) {
+        const updated = this.resourceCache[id];
+        if (updated && new Date().getTime() - updated <= this.expires) {
+            return $.read(`#${id}`);
+        }
+        return null;
+    }
+
+    set(id, value) {
+        this.resourceCache[id] = new Date().getTime();
+        this._persist();
+        $.write(value, `#${id}`);
+    }
+}
+
+const resourceCache = new ResourceCache(CACHE_EXPIRATION_TIME_MS);
+
+async function operator(proxies) {
+    const { isLoon, isSurge } = $substore.env;
+    let support = true;
+    if (isLoon) {
+        support = true;
+    } else if (isSurge) {
+        const build = $environment['surge-build'];
+        if (build && parseInt(build) >= 2407) {
+            support = true;
+        }
+    }
+
+    if (support) {
+        await Promise.all(proxies.map(async proxy => {
+            try {
+                // remove the original flag
+                let proxyName = removeFlag(proxy.name);
+
+                // query ip-api
+                const countryCode = await queryIpApi(proxy);
+
+                proxyName = getFlagEmoji(countryCode) + ' ' + proxyName;
+                proxy.name = proxyName;
+            } catch (err) {
+                // TODO: 
+            }
+        }));
+    } else {
+        $.error(`IP Flag only supports Loon and Surge!`);
+    }
+    return proxies;
+}
+
+const tasks = new Map();
+async function queryIpApi(proxy) {
+    const id = getId(proxy);
+    if (tasks.has(id)) {
+        return tasks.get(id);
+    }
+
+    const ua = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:78.0) Gecko/20100101 Firefox/78.0";
+    const headers = {
+        "User-Agent": ua
+    };
+    const { isLoon } = $substore.env;
+    const target = isLoon ? "Loon" : "Surge";
+    const result = new Promise((resolve, reject) => {
+        const cached = resourceCache.get(id);
+        if (cached) {
+            resolve(cached);
+        }
+        const url = `http://ip-api.com/json`;
+        const node = ProxyUtils.produce([proxy], target);
+        $.http.get({
+            url,
+            headers,
+            node
+        }).then(resp => {
+            const body = resp.body;
+            const data = JSON.parse(body);
+            if (data.status === "success") {
+                resourceCache.set(id, data.countryCode);
+                resolve(data.countryCode);
+            } else {
+                reject(new Error(data.message));
+            }
+        }).catch(err => {
+            console.log(err);
+            reject(err);
+        });
+    });
+    tasks.set(id, result);
+    return result;
+}
+
+function getId(proxy) {
+    return MD5(`IP-FLAG-${proxy.server}-${proxy.port}`);
+}
+
+function getFlagEmoji(countryCode) {
+    const codePoints = countryCode
+        .toUpperCase()
+        .split('')
+        .map(char => 127397 + char.charCodeAt());
+    return String.fromCodePoint(...codePoints);
+}
+
+function removeFlag(str) {
+    return str
+        .replace(/[\uD83C][\uDDE6-\uDDFF][\uD83C][\uDDE6-\uDDFF]/g, '')
+        .trim();
+}
+
+var MD5 = function (d) { var r = M(V(Y(X(d), 8 * d.length))); return r.toLowerCase() }; function M(d) { for (var _, m = "0123456789ABCDEF", f = "", r = 0; r < d.length; r++)_ = d.charCodeAt(r), f += m.charAt(_ >>> 4 & 15) + m.charAt(15 & _); return f } function X(d) { for (var _ = Array(d.length >> 2), m = 0; m < _.length; m++)_[m] = 0; for (m = 0; m < 8 * d.length; m += 8)_[m >> 5] |= (255 & d.charCodeAt(m / 8)) << m % 32; return _ } function V(d) { for (var _ = "", m = 0; m < 32 * d.length; m += 8)_ += String.fromCharCode(d[m >> 5] >>> m % 32 & 255); return _ } function Y(d, _) { d[_ >> 5] |= 128 << _ % 32, d[14 + (_ + 64 >>> 9 << 4)] = _; for (var m = 1732584193, f = -271733879, r = -1732584194, i = 271733878, n = 0; n < d.length; n += 16) { var h = m, t = f, g = r, e = i; f = md5_ii(f = md5_ii(f = md5_ii(f = md5_ii(f = md5_hh(f = md5_hh(f = md5_hh(f = md5_hh(f = md5_gg(f = md5_gg(f = md5_gg(f = md5_gg(f = md5_ff(f = md5_ff(f = md5_ff(f = md5_ff(f, r = md5_ff(r, i = md5_ff(i, m = md5_ff(m, f, r, i, d[n + 0], 7, -680876936), f, r, d[n + 1], 12, -389564586), m, f, d[n + 2], 17, 606105819), i, m, d[n + 3], 22, -1044525330), r = md5_ff(r, i = md5_ff(i, m = md5_ff(m, f, r, i, d[n + 4], 7, -176418897), f, r, d[n + 5], 12, 1200080426), m, f, d[n + 6], 17, -1473231341), i, m, d[n + 7], 22, -45705983), r = md5_ff(r, i = md5_ff(i, m = md5_ff(m, f, r, i, d[n + 8], 7, 1770035416), f, r, d[n + 9], 12, -1958414417), m, f, d[n + 10], 17, -42063), i, m, d[n + 11], 22, -1990404162), r = md5_ff(r, i = md5_ff(i, m = md5_ff(m, f, r, i, d[n + 12], 7, 1804603682), f, r, d[n + 13], 12, -40341101), m, f, d[n + 14], 17, -1502002290), i, m, d[n + 15], 22, 1236535329), r = md5_gg(r, i = md5_gg(i, m = md5_gg(m, f, r, i, d[n + 1], 5, -165796510), f, r, d[n + 6], 9, -1069501632), m, f, d[n + 11], 14, 643717713), i, m, d[n + 0], 20, -373897302), r = md5_gg(r, i = md5_gg(i, m = md5_gg(m, f, r, i, d[n + 5], 5, -701558691), f, r, d[n + 10], 9, 38016083), m, f, d[n + 15], 14, -660478335), i, m, d[n + 4], 20, -405537848), r = md5_gg(r, i = md5_gg(i, m = md5_gg(m, f, r, i, d[n + 9], 5, 568446438), f, r, d[n + 14], 9, -1019803690), m, f, d[n + 3], 14, -187363961), i, m, d[n + 8], 20, 1163531501), r = md5_gg(r, i = md5_gg(i, m = md5_gg(m, f, r, i, d[n + 13], 5, -1444681467), f, r, d[n + 2], 9, -51403784), m, f, d[n + 7], 14, 1735328473), i, m, d[n + 12], 20, -1926607734), r = md5_hh(r, i = md5_hh(i, m = md5_hh(m, f, r, i, d[n + 5], 4, -378558), f, r, d[n + 8], 11, -2022574463), m, f, d[n + 11], 16, 1839030562), i, m, d[n + 14], 23, -35309556), r = md5_hh(r, i = md5_hh(i, m = md5_hh(m, f, r, i, d[n + 1], 4, -1530992060), f, r, d[n + 4], 11, 1272893353), m, f, d[n + 7], 16, -155497632), i, m, d[n + 10], 23, -1094730640), r = md5_hh(r, i = md5_hh(i, m = md5_hh(m, f, r, i, d[n + 13], 4, 681279174), f, r, d[n + 0], 11, -358537222), m, f, d[n + 3], 16, -722521979), i, m, d[n + 6], 23, 76029189), r = md5_hh(r, i = md5_hh(i, m = md5_hh(m, f, r, i, d[n + 9], 4, -640364487), f, r, d[n + 12], 11, -421815835), m, f, d[n + 15], 16, 530742520), i, m, d[n + 2], 23, -995338651), r = md5_ii(r, i = md5_ii(i, m = md5_ii(m, f, r, i, d[n + 0], 6, -198630844), f, r, d[n + 7], 10, 1126891415), m, f, d[n + 14], 15, -1416354905), i, m, d[n + 5], 21, -57434055), r = md5_ii(r, i = md5_ii(i, m = md5_ii(m, f, r, i, d[n + 12], 6, 1700485571), f, r, d[n + 3], 10, -1894986606), m, f, d[n + 10], 15, -1051523), i, m, d[n + 1], 21, -2054922799), r = md5_ii(r, i = md5_ii(i, m = md5_ii(m, f, r, i, d[n + 8], 6, 1873313359), f, r, d[n + 15], 10, -30611744), m, f, d[n + 6], 15, -1560198380), i, m, d[n + 13], 21, 1309151649), r = md5_ii(r, i = md5_ii(i, m = md5_ii(m, f, r, i, d[n + 4], 6, -145523070), f, r, d[n + 11], 10, -1120210379), m, f, d[n + 2], 15, 718787259), i, m, d[n + 9], 21, -343485551), m = safe_add(m, h), f = safe_add(f, t), r = safe_add(r, g), i = safe_add(i, e) } return Array(m, f, r, i) } function md5_cmn(d, _, m, f, r, i) { return safe_add(bit_rol(safe_add(safe_add(_, d), safe_add(f, i)), r), m) } function md5_ff(d, _, m, f, r, i, n) { return md5_cmn(_ & m | ~_ & f, d, _, r, i, n) } function md5_gg(d, _, m, f, r, i, n) { return md5_cmn(_ & f | m & ~f, d, _, r, i, n) } function md5_hh(d, _, m, f, r, i, n) { return md5_cmn(_ ^ m ^ f, d, _, r, i, n) } function md5_ii(d, _, m, f, r, i, n) { return md5_cmn(m ^ (_ | ~f), d, _, r, i, n) } function safe_add(d, _) { var m = (65535 & d) + (65535 & _); return (d >> 16) + (_ >> 16) + (m >> 16) << 16 | 65535 & m } function bit_rol(d, _) { return d << _ | d >>> 32 - _ }