Initial version (#1)

* Client to request signature and validate with ABNF Co-authored-by: K. Rhoda <[email protected]> * Check ENS * Add editor config * Wallet connect integration * Disconnect current provider to avoid Infura requests * Use Promise and events * Bump version Co-authored-by: Simon Bihel <[email protected]> Co-authored-by: K. Rhoda <[email protected]>
LIT-Protocol · Oct 26, 2021 · 3a018b2 · 3a018b2
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diff --git a/.editorconfig b/.editorconfig
@@ -0,0 +1,17 @@
+root = true
+
+[*]
+end_of_line = lf
+insert_final_newline = true
+
+[*.{ts}]
+charset = utf-8
+
+[Makefile]
+indent_style = tab
+
+[lib/**.ts]
+indent_style = tab
+indent_size = 4
+max_line_length = 120
+quote_type = single
diff --git a/.gitignore b/.gitignore
@@ -0,0 +1,2 @@
+node_modules
+dist
diff --git a/jest.config.js b/jest.config.js
@@ -0,0 +1,5 @@
+/** @type {import('ts-jest/dist/types').InitialOptionsTsJest} */
+module.exports = {
+    preset: 'ts-jest',
+    testEnvironment: 'node',
+};
diff --git a/lib/abnf.test.ts b/lib/abnf.test.ts
@@ -0,0 +1,32 @@
+import { ParsedMessage } from './abnf';
+
+describe('ABNF Client', () => {
+	it('Parses message successfully', () => {
+		const msg = `service.org wants you to sign in with your Ethereum account:
+0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2
+
+I accept the ServiceOrg Terms of Service: https://service.org/tos
+
+URI: https://service.org/login
+Version: 1
+Nonce: 32891757
+Issued At: 2021-09-30T16:25:24Z
+Chain ID: 1
+Resources:
+- ipfs://Qme7ss3ARVgxv6rXqVPiikMJ8u2NLgmgszg13pYrDKEoiu
+- https://example.com/my-web2-claim.json`;
+		const parsedMessage = new ParsedMessage(msg);
+		expect(parsedMessage.domain).toBe('service.org');
+		expect(parsedMessage.address).toBe('0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2');
+		expect(parsedMessage.statement).toBe('I accept the ServiceOrg Terms of Service: https://service.org/tos');
+		expect(parsedMessage.uri).toBe('https://service.org/login');
+		expect(parsedMessage.version).toBe('1');
+		expect(parsedMessage.nonce).toBe('32891757');
+		expect(parsedMessage.issuedAt).toBe('2021-09-30T16:25:24Z');
+		expect(parsedMessage.chainId).toBe('1');
+		expect(parsedMessage.resources).toStrictEqual([
+			'ipfs://Qme7ss3ARVgxv6rXqVPiikMJ8u2NLgmgszg13pYrDKEoiu',
+			'https://example.com/my-web2-claim.json',
+		]);
+	});
+});
diff --git a/lib/abnf.ts b/lib/abnf.ts
@@ -0,0 +1,290 @@
+import { apgApi, apgLib } from 'apg-js';
+
+const GRAMMAR = `
+sign-in-with-ethereum =
+    domain %s" wants you to sign in with your Ethereum account:" LF
+    address LF
+    LF
+    [ statement LF ]
+    LF
+    %s"URI: " URI LF
+    %s"Version: " version LF
+    %s"Nonce: " nonce LF
+    %s"Issued At: " issued-at LF
+    [ %s"Expiration Time: " expiration-time LF ]
+    [ %s"Not Before: " not-before LF ]
+    [ %s"Request ID: " request-id LF ]
+    [ %s"Chain ID: " chain-id LF ]
+    [ %s"Resources:" LF
+    resources ]
+
+domain = dnsauthority
+
+address = "0x" 40*40HEXDIG
+    ; Must also conform to captilization
+    ; checksum encoding specified in EIP-55
+    ; where applicable (EOAs).
+
+statement = *( reserved / unreserved / " " )
+    ; The purpose is to exclude LF (line breaks).
+
+version = "1"
+
+nonce = 8*( ALPHA / DIGIT )
+
+issued-at = date-time
+expiration-time = date-time
+not-before = date-time
+
+request-id = *pchar
+
+chain-id = 1*DIGIT
+    ; See EIP-155 for valid CHAIN_IDs.
+
+resources = resource *( LF resource )
+
+resource = "- " URI
+
+; ------------------------------------------------------------------------------
+; RFC 3986
+
+URI           = scheme ":" hier-part [ "?" query ] [ "#" fragment ]
+
+hier-part     = "//" authority path-abempty
+              / path-absolute
+              / path-rootless
+              / path-empty
+
+scheme        = ALPHA *( ALPHA / DIGIT / "+" / "-" / "." )
+
+authority     = [ userinfo "@" ] host [ ":" port ]
+userinfo      = *( unreserved / pct-encoded / sub-delims / ":" )
+host          = IP-literal / IPv4address / reg-name
+port          = *DIGIT
+
+IP-literal    = "[" ( IPv6address / IPvFuture  ) "]"
+
+IPvFuture     = "v" 1*HEXDIG "." 1*( unreserved / sub-delims / ":" )
+
+IPv6address   =                            6( h16 ":" ) ls32
+              /                       "::" 5( h16 ":" ) ls32
+              / [               h16 ] "::" 4( h16 ":" ) ls32
+              / [ *1( h16 ":" ) h16 ] "::" 3( h16 ":" ) ls32
+              / [ *2( h16 ":" ) h16 ] "::" 2( h16 ":" ) ls32
+              / [ *3( h16 ":" ) h16 ] "::"    h16 ":"   ls32
+              / [ *4( h16 ":" ) h16 ] "::"              ls32
+              / [ *5( h16 ":" ) h16 ] "::"              h16
+              / [ *6( h16 ":" ) h16 ] "::"
+
+h16           = 1*4HEXDIG
+ls32          = ( h16 ":" h16 ) / IPv4address
+IPv4address   = dec-octet "." dec-octet "." dec-octet "." dec-octet
+dec-octet     = DIGIT                 ; 0-9
+                 / %x31-39 DIGIT         ; 10-99
+                 / "1" 2DIGIT            ; 100-199
+                 / "2" %x30-34 DIGIT     ; 200-249
+                 / "25" %x30-35          ; 250-255
+
+reg-name      = *( unreserved / pct-encoded / sub-delims )
+
+path-abempty  = *( "/" segment )
+path-absolute = "/" [ segment-nz *( "/" segment ) ]
+path-rootless = segment-nz *( "/" segment )
+path-empty    = 0pchar
+
+segment       = *pchar
+segment-nz    = 1*pchar
+
+pchar         = unreserved / pct-encoded / sub-delims / ":" / "@"
+
+query         = *( pchar / "/" / "?" )
+
+fragment      = *( pchar / "/" / "?" )
+
+pct-encoded   = "%" HEXDIG HEXDIG
+
+unreserved    = ALPHA / DIGIT / "-" / "." / "_" / "~"
+reserved      = gen-delims / sub-delims
+gen-delims    = ":" / "/" / "?" / "#" / "[" / "]" / "@"
+sub-delims    = "!" / "$" / "&" / "'" / "(" / ")"
+              / "*" / "+" / "," / ";" / "="
+
+; ------------------------------------------------------------------------------
+; RFC 4501
+
+dnsauthority    = host [ ":" port ]
+                             ; See RFC 3986 for the
+                             ; definition of "host" and "port".
+
+; ------------------------------------------------------------------------------
+; RFC 3339
+
+date-fullyear   = 4DIGIT
+date-month      = 2DIGIT  ; 01-12
+date-mday       = 2DIGIT  ; 01-28, 01-29, 01-30, 01-31 based on
+                          ; month/year
+time-hour       = 2DIGIT  ; 00-23
+time-minute     = 2DIGIT  ; 00-59
+time-second     = 2DIGIT  ; 00-58, 00-59, 00-60 based on leap second
+                          ; rules
+time-secfrac    = "." 1*DIGIT
+time-numoffset  = ("+" / "-") time-hour ":" time-minute
+time-offset     = "Z" / time-numoffset
+
+partial-time    = time-hour ":" time-minute ":" time-second
+                  [time-secfrac]
+full-date       = date-fullyear "-" date-month "-" date-mday
+full-time       = partial-time time-offset
+
+date-time       = full-date "T" full-time
+
+; ------------------------------------------------------------------------------
+; RFC 5234
+
+ALPHA          =  %x41-5A / %x61-7A   ; A-Z / a-z
+LF             =  %x0A
+                  ; linefeed
+DIGIT          =  %x30-39
+                  ; 0-9
+HEXDIG         =  DIGIT / "A" / "B" / "C" / "D" / "E" / "F"
+`;
+
+export class ParsedMessage {
+	domain: string;
+	address: string;
+	statement: string;
+	uri: string;
+	version: string;
+	nonce: string;
+	chainId: string | null;
+	issuedAt: string | null;
+	expirationTime: string | null;
+	notBefore: string | null;
+	requestId: string | null;
+	resources: Array<string> | null;
+
+	constructor(msg: string) {
+		const api = new apgApi(GRAMMAR);
+		api.generate();
+		if (api.errors.length) {
+			console.error(api.errorsToAscii());
+			console.error(api.linesToAscii());
+			console.log(api.displayAttributeErrors());
+			throw new Error(`ABNF grammar has errors`);
+		}
+
+		const grammarObj = api.toObject();
+		const parser = new apgLib.parser();
+		parser.ast = new apgLib.ast();
+		const id = apgLib.ids;
+
+		const domain = function (state, chars, phraseIndex, phraseLength, data) {
+			const ret = id.SEM_OK;
+			if (state === id.SEM_PRE) {
+				data.domain = apgLib.utils.charsToString(chars, phraseIndex, phraseLength);
+			}
+			return ret;
+		};
+		parser.ast.callbacks.domain = domain;
+		const address = function (state, chars, phraseIndex, phraseLength, data) {
+			const ret = id.SEM_OK;
+			if (state === id.SEM_PRE) {
+				data.address = apgLib.utils.charsToString(chars, phraseIndex, phraseLength);
+			}
+			return ret;
+		};
+		parser.ast.callbacks.address = address;
+		const statement = function (state, chars, phraseIndex, phraseLength, data) {
+			const ret = id.SEM_OK;
+			if (state === id.SEM_PRE) {
+				data.statement = apgLib.utils.charsToString(chars, phraseIndex, phraseLength);
+			}
+			return ret;
+		};
+		parser.ast.callbacks.statement = statement;
+		const uri = function (state, chars, phraseIndex, phraseLength, data) {
+			const ret = id.SEM_OK;
+			if (state === id.SEM_PRE) {
+				if (!data.uri) {
+					data.uri = apgLib.utils.charsToString(chars, phraseIndex, phraseLength);
+				}
+			}
+			return ret;
+		};
+		parser.ast.callbacks.uri = uri;
+		const version = function (state, chars, phraseIndex, phraseLength, data) {
+			const ret = id.SEM_OK;
+			if (state === id.SEM_PRE) {
+				data.version = apgLib.utils.charsToString(chars, phraseIndex, phraseLength);
+			}
+			return ret;
+		};
+		parser.ast.callbacks.version = version;
+		const chainId = function (state, chars, phraseIndex, phraseLength, data) {
+			const ret = id.SEM_OK;
+			if (state === id.SEM_PRE) {
+				data.chainId = apgLib.utils.charsToString(chars, phraseIndex, phraseLength);
+			}
+			return ret;
+		};
+		parser.ast.callbacks['chain-id'] = chainId;
+		const nonce = function (state, chars, phraseIndex, phraseLength, data) {
+			const ret = id.SEM_OK;
+			if (state === id.SEM_PRE) {
+				data.nonce = apgLib.utils.charsToString(chars, phraseIndex, phraseLength);
+			}
+			return ret;
+		};
+		parser.ast.callbacks.nonce = nonce;
+		const issuedAt = function (state, chars, phraseIndex, phraseLength, data) {
+			const ret = id.SEM_OK;
+			if (state === id.SEM_PRE) {
+				data.issuedAt = apgLib.utils.charsToString(chars, phraseIndex, phraseLength);
+			}
+			return ret;
+		};
+		parser.ast.callbacks['issued-at'] = issuedAt;
+		const expirationTime = function (state, chars, phraseIndex, phraseLength, data) {
+			const ret = id.SEM_OK;
+			if (state === id.SEM_PRE) {
+				data.expirationTime = apgLib.utils.charsToString(chars, phraseIndex, phraseLength);
+			}
+			return ret;
+		};
+		parser.ast.callbacks['expiration-time'] = expirationTime;
+		const notBefore = function (state, chars, phraseIndex, phraseLength, data) {
+			const ret = id.SEM_OK;
+			if (state === id.SEM_PRE) {
+				data.notBefore = apgLib.utils.charsToString(chars, phraseIndex, phraseLength);
+			}
+			return ret;
+		};
+		parser.ast.callbacks['not-before'] = notBefore;
+		const requestId = function (state, chars, phraseIndex, phraseLength, data) {
+			const ret = id.SEM_OK;
+			if (state === id.SEM_PRE) {
+				data.requestId = apgLib.utils.charsToString(chars, phraseIndex, phraseLength);
+			}
+			return ret;
+		};
+		parser.ast.callbacks['request-id'] = requestId;
+		const resources = function (state, chars, phraseIndex, phraseLength, data) {
+			const ret = id.SEM_OK;
+			if (state === id.SEM_PRE) {
+				data.resources = apgLib.utils.charsToString(chars, phraseIndex, phraseLength).slice(2).split('\n- ');
+			}
+			return ret;
+		};
+		parser.ast.callbacks.resources = resources;
+
+		const result = parser.parse(grammarObj, 'sign-in-with-ethereum', msg);
+		if (!result.success) {
+			throw new Error(`Invalid message: ${JSON.stringify(result)}`);
+		}
+		const elements = {};
+		parser.ast.translate(elements);
+		for (const [key, value] of Object.entries(elements)) {
+			this[key] = value;
+		}
+	}
+}