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refactor (core): Reworked Trojan URI parser to support IPV6 nodes

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This commit is contained in:
Peng-YM
2022-08-13 12:57:49 +08:00
parent 1bd2f5f643
commit 0072739f01
9 changed files with 237 additions and 45 deletions
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38
backend/src/core/proxy-utils/parsers/index.js
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@@ -2,6 +2,8 @@ import { getIfNotBlank, isPresent, isNotBlank, getIfPresent } from '@/utils';
import getSurgeParser from './peggy/surge';
import getLoonParser from './peggy/loon';
import getQXParser from './peggy/qx';
import getTrojanURIParser from './peggy/trojan-uri';
import { Base64 } from 'js-base64';
// Parse SS URI format (only supports new SIP002, legacy format is depreciated).
@@ -240,39 +242,9 @@ function URI_Trojan() {
};
const parse = (line) => {
line = line.split('trojan://')[1];
const [server, port] = line.split('@')[1].split('?')[0].split(':');
const name = decodeURIComponent(line.split('#')[1].trim());
let paramArr = line.split('?');
let scert = null;
const params = new Map();
if (paramArr.length > 1) {
paramArr = paramArr[1].split('#')[0].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'
) {
scert = true;
}
}
return {
name: name || `[Trojan] ${server}`, // trojan uri may have no server tag!
type: 'trojan',
server,
port,
password: line.split('@')[0],
sni: getIfPresent(params.get('sni')),
'skip-cert-verify': getIfPresent(scert),
};
const parser = getTrojanURIParser();
const proxy = parser.parse(line);
return proxy;
};
return { name, test, parse };
}

2
backend/src/core/proxy-utils/parsers/peggy/qx.js
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@@ -142,7 +142,7 @@ uuid = comma "password" equals uuid:[^=,]+ { proxy.uuid = uuid.join("").trim();
method = comma "method" equals cipher:cipher {
proxy.cipher = cipher;
};
cipher = ("aes-128-gcm"/"aes-192-gcm"/"aes-256-gcm"/"aes-128-cfb"/"aes-192-cfb"/"aes-256-cfb"/"aes-128-ctr"/"aes-192-ctr"/"aes-256-ctr"/"rc4-md5"/"chacha20-ietf-poly1305"/"chacha20-ietf"/"chacha20-poly1305"/"chacha20"/"none");
cipher = ("aes-128-gcm"/"aes-192-gcm"/"aes-256-gcm"/"aes-128-cfb"/"aes-192-cfb"/"aes-256-cfb"/"aes-128-ctr"/"aes-192-ctr"/"aes-256-ctr"/"rc4-md5"/"xchacha20-ietf-poly1305"/"chacha20-ietf-poly1305"/"chacha20-ietf"/"chacha20-poly1305"/"chacha20"/"none");
aead = comma "aead" equals flag:bool { proxy.aead = flag; }
udp_relay = comma "udp-relay" equals flag:bool { proxy.udp = flag; }

2
backend/src/core/proxy-utils/parsers/peggy/qx.peg
View File

@@ -140,7 +140,7 @@ uuid = comma "password" equals uuid:[^=,]+ { proxy.uuid = uuid.join("").trim();
method = comma "method" equals cipher:cipher {
proxy.cipher = cipher;
};
cipher = ("aes-128-gcm"/"aes-192-gcm"/"aes-256-gcm"/"aes-128-cfb"/"aes-192-cfb"/"aes-256-cfb"/"aes-128-ctr"/"aes-192-ctr"/"aes-256-ctr"/"rc4-md5"/"chacha20-ietf-poly1305"/"chacha20-ietf"/"chacha20-poly1305"/"chacha20"/"none");
cipher = ("aes-128-gcm"/"aes-192-gcm"/"aes-256-gcm"/"aes-128-cfb"/"aes-192-cfb"/"aes-256-cfb"/"aes-128-ctr"/"aes-192-ctr"/"aes-256-ctr"/"rc4-md5"/"xchacha20-ietf-poly1305"/"chacha20-ietf-poly1305"/"chacha20-ietf"/"chacha20-poly1305"/"chacha20"/"none");
aead = comma "aead" equals flag:bool { proxy.aead = flag; }
udp_relay = comma "udp-relay" equals flag:bool { proxy.udp = flag; }

115
backend/src/core/proxy-utils/parsers/peggy/trojan-uri.js Normal file
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@@ -0,0 +1,115 @@
import * as peggy from 'peggy';
const grammars = String.raw`
// global initializer
{{
function $set(obj, path, value) {
if (Object(obj) !== obj) return obj;
if (!Array.isArray(path)) path = path.toString().match(/[^.[\]]+/g) || [];
path
.slice(0, -1)
.reduce((a, c, i) => (Object(a[c]) === a[c] ? a[c] : (a[c] = Math.abs(path[i + 1]) >> 0 === +path[i + 1] ? [] : {})), obj)[
path[path.length - 1]
] = value;
return obj;
}
function toBool(str) {
if (typeof str === 'undefined' || str === null) return undefined;
return /(TRUE)|1/i.test(str);
}
}}
{
const proxy = {};
const obfs = {};
const $ = {};
const params = {};
}
start = (trojan) {
return proxy
}
trojan = "trojan://" password:password "@" server:server ":" port:port params? name:name?{
proxy.type = "trojan";
proxy.password = password;
proxy.server = server;
proxy.port = port;
proxy.name = name;
// name may be empty
if (!proxy.name) {
proxy.name = server + ":" + port;
}
};
password = match:$[^@]+ {
return decodeURIComponent(match);
};
server = ip/domain;
domain = match:[0-9a-zA-z-_.]+ {
const domain = match.join("");
if (/(?:[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9])?\.)+[a-z0-9][a-z0-9-]{0,61}[a-z0-9]/.test(domain)) {
return domain;
}
}
ip = & {
const start = peg$currPos;
let end;
let j = start;
while (j < input.length) {
if (input[j] === ",") break;
if (input[j] === ":") end = j;
j++;
}
peg$currPos = end || j;
$.ip = input.substring(start, end).trim();
return true;
} { return $.ip; }
port = digits:[0-9]+ {
const port = parseInt(digits.join(""), 10);
if (port >= 80 && port <= 65535) {
return port;
} else {
throw new Error("Invalid port: " + port);
}
}
params = "?" head:param tail:("&"@param)* {
proxy["skip-cert-verify"] = toBool(params["allowInsecure"]);
proxy.sni = params["sni"] || params["peer"];
if (toBool(params["ws"])) {
proxy.network = "ws";
$set(proxy, "ws-opts.path", params["wspath"]);
}
proxy.udp = toBool(params["udp"]);
proxy.tfo = toBool(params["tfo"]);
}
param = kv/single;
kv = key:$[a-z]i+ "=" value:$[^&#]i+ {
params[key] = value;
}
single = key:$[a-z]i+ {
params[key] = true;
};
name = "#" + match:$.* {
return decodeURIComponent(match);
}
`;
let parser;
export default function getParser() {
if (!parser) {
parser = peggy.generate(grammars);
}
return parser;
}

105
backend/src/core/proxy-utils/parsers/peggy/trojan-uri.peg Normal file
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@@ -0,0 +1,105 @@
// global initializer
{{
function $set(obj, path, value) {
if (Object(obj) !== obj) return obj;
if (!Array.isArray(path)) path = path.toString().match(/[^.[\]]+/g) || [];
path
.slice(0, -1)
.reduce((a, c, i) => (Object(a[c]) === a[c] ? a[c] : (a[c] = Math.abs(path[i + 1]) >> 0 === +path[i + 1] ? [] : {})), obj)[
path[path.length - 1]
] = value;
return obj;
}
function toBool(str) {
if (typeof str === 'undefined' || str === null) return undefined;
return /(TRUE)|1/i.test(str);
}
}}
{
const proxy = {};
const obfs = {};
const $ = {};
const params = {};
}
start = (trojan) {
return proxy
}
trojan = "trojan://" password:password "@" server:server ":" port:port params? name:name?{
proxy.type = "trojan";
proxy.password = password;
proxy.server = server;
proxy.port = port;
proxy.name = name;
// name may be empty
if (!proxy.name) {
proxy.name = server + ":" + port;
}
};
password = match:$[^@]+ {
return decodeURIComponent(match);
};
server = ip/domain;
domain = match:[0-9a-zA-z-_.]+ {
const domain = match.join("");
if (/(?:[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9])?\.)+[a-z0-9][a-z0-9-]{0,61}[a-z0-9]/.test(domain)) {
return domain;
}
}
ip = & {
const start = peg$currPos;
let end;
let j = start;
while (j < input.length) {
if (input[j] === ",") break;
if (input[j] === ":") end = j;
j++;
}
peg$currPos = end || j;
$.ip = input.substring(start, end).trim();
return true;
} { return $.ip; }
port = digits:[0-9]+ {
const port = parseInt(digits.join(""), 10);
if (port >= 80 && port <= 65535) {
return port;
} else {
throw new Error("Invalid port: " + port);
}
}
params = "?" head:param tail:("&"@param)* {
proxy["skip-cert-verify"] = toBool(params["allowInsecure"]);
proxy.sni = params["sni"] || params["peer"];
if (toBool(params["ws"])) {
proxy.network = "ws";
$set(proxy, "ws-opts.path", params["wspath"]);
}
proxy.udp = toBool(params["udp"]);
proxy.tfo = toBool(params["tfo"]);
}
param = kv/single;
kv = key:$[a-z]i+ "=" value:$[^&#]i+ {
params[key] = value;
}
single = key:$[a-z]i+ {
params[key] = true;
};
name = "#" + match:$.* {
return decodeURIComponent(match);
}