create server module

src/index.ts

@@ -16,12 +16,7 @@ export {
 export { Anchor } from "./walletSdk/Anchor";
 export { Sep24 } from "./walletSdk/Anchor/Sep24";
 export { IssuedAssetId, NativeAssetId, FiatAssetId } from "./walletSdk/Asset";
-export {
-  Sep10,
-  WalletSigner,
-  DefaultSigner,
-  signChallengeTransaction,
-} from "./walletSdk/Auth";
+export { Sep10, WalletSigner, DefaultSigner } from "./walletSdk/Auth";
 export {
   AccountKeypair,
   PublicKeypair,
@@ -47,6 +42,12 @@ export { Utils };
 import * as Exceptions from "./walletSdk/Exceptions";
 export { Exceptions };
 
+/**
+ * Server
+ */
+import * as Server from "./walletSdk/Server";
+export { Server };
+
 import * as walletSdk from "./walletSdk";
 import { Keypair } from "@stellar/stellar-sdk";
 // TODO - figure out why Keypair used in parent codebase throws error

src/walletSdk/Auth/index.ts

@@ -1,10 +1,5 @@
 import { AxiosInstance } from "axios";
-import StellarSdk, {
-  Transaction,
-  TransactionBuilder,
-  Keypair,
-  StellarToml,
-} from "@stellar/stellar-sdk";
+import StellarSdk, { Transaction } from "@stellar/stellar-sdk";
 import { decode } from "jws";
 
 import { Config } from "walletSdk";
@@ -15,19 +10,14 @@ import {
   InvalidTokenError,
   MissingTokenError,
   ExpiredTokenError,
-  ChallengeTxnIncorrectSequenceError,
-  ChallengeTxnInvalidSignatureError,
 } from "../Exceptions";
 import {
   AuthenticateParams,
   AuthToken,
   ChallengeParams,
   ChallengeResponse,
   SignParams,
-  SignChallengeTxnParams,
-  SignChallengeTxnResponse,
 } from "../Types";
-import { parseToml } from "../Utils";
 
 export { WalletSigner, DefaultSigner } from "./WalletSigner";
 
@@ -175,45 +165,3 @@ const validateToken = (token: string) => {
     throw new ExpiredTokenError(parsedToken.expiresAt);
   }
 };
-
-/**
- * Helper method for signing a SEP-10 challenge transaction if valid.
- * @param {SignChallengeTxnParams} params - The Authentication params.
- * @param {AccountKeypair} params.accountKp - Keypair for the Stellar account signing the transaction.
- * @param {string} [params.challengeTx] - The challenge transaction given by an anchor for authentication.
- * @param {string} [params.networkPassphrase] - The network passphrase for the network authenticating on.
- * @param {string} [params.anchorDomain] - Domain hosting stellar.toml file containing `SIGNING_KEY`.
- * @returns {Promise<SignChallengeTxnResponse>} The signed transaction.
- */
-export const signChallengeTransaction = async ({
-  accountKp,
-  challengeTx,
-  networkPassphrase,
-  anchorDomain,
-}: SignChallengeTxnParams): Promise<SignChallengeTxnResponse> => {
-  const tx = TransactionBuilder.fromXDR(
-    challengeTx,
-    networkPassphrase,
-  ) as Transaction;
-
-  if (parseInt(tx.sequence) !== 0) {
-    throw new ChallengeTxnIncorrectSequenceError();
-  }
-
-  const tomlResp = await StellarToml.Resolver.resolve(anchorDomain);
-  const parsedToml = parseToml(tomlResp);
-  const anchorKp = Keypair.fromPublicKey(parsedToml.signingKey);
-
-  const isValid =
-    tx.signatures.length &&
-    anchorKp.verify(tx.hash(), tx.signatures[0].signature());
-  if (!isValid) {
-    throw new ChallengeTxnInvalidSignatureError();
-  }
-
-  accountKp.sign(tx);
-  return {
-    transaction: tx.toXDR(),
-    networkPassphrase,
-  };
-};

src/walletSdk/Server/index.ts

@@ -0,0 +1,60 @@
+/**
+ * Code in the Server module is written to be used by server side
+ * applications.
+ */
+
+import {
+  Transaction,
+  TransactionBuilder,
+  Keypair,
+  StellarToml,
+} from "@stellar/stellar-sdk";
+
+import { parseToml } from "../Utils";
+import { SignChallengeTxnParams, SignChallengeTxnResponse } from "../Types";
+import {
+  ChallengeTxnIncorrectSequenceError,
+  ChallengeTxnInvalidSignatureError,
+} from "../Exceptions";
+
+/**
+ * Helper method for signing a SEP-10 challenge transaction if valid.
+ * @param {SignChallengeTxnParams} params - The Authentication params.
+ * @param {AccountKeypair} params.accountKp - Keypair for the Stellar account signing the transaction.
+ * @param {string} [params.challengeTx] - The challenge transaction given by an anchor for authentication.
+ * @param {string} [params.networkPassphrase] - The network passphrase for the network authenticating on.
+ * @param {string} [params.anchorDomain] - Domain hosting stellar.toml file containing `SIGNING_KEY`.
+ * @returns {Promise<SignChallengeTxnResponse>} The signed transaction.
+ */
+export const signChallengeTransaction = async ({
+  accountKp,
+  challengeTx,
+  networkPassphrase,
+  anchorDomain,
+}: SignChallengeTxnParams): Promise<SignChallengeTxnResponse> => {
+  const tx = TransactionBuilder.fromXDR(
+    challengeTx,
+    networkPassphrase,
+  ) as Transaction;
+
+  if (parseInt(tx.sequence) !== 0) {
+    throw new ChallengeTxnIncorrectSequenceError();
+  }
+
+  const tomlResp = await StellarToml.Resolver.resolve(anchorDomain);
+  const parsedToml = parseToml(tomlResp);
+  const anchorKp = Keypair.fromPublicKey(parsedToml.signingKey);
+
+  const isValid =
+    tx.signatures.length &&
+    anchorKp.verify(tx.hash(), tx.signatures[0].signature());
+  if (!isValid) {
+    throw new ChallengeTxnInvalidSignatureError();
+  }
+
+  accountKp.sign(tx);
+  return {
+    transaction: tx.toXDR(),
+    networkPassphrase,
+  };
+};

test/auth.test.ts → test/server.test.ts

@@ -1,5 +1,5 @@
 import { TransactionBuilder } from "@stellar/stellar-sdk";
-import { Wallet, signChallengeTransaction } from "../src";
+import { Wallet, Server } from "../src";
 
 let wallet;
 let account;
@@ -18,7 +18,7 @@ describe("SEP-10 helpers", () => {
 
     let isValid;
     try {
-      const signedResp = await signChallengeTransaction({
+      const signedResp = await Server.signChallengeTransaction({
         accountKp,
         challengeTx: validChallengeTx,
         networkPassphrase,
@@ -44,7 +44,7 @@ describe("SEP-10 helpers", () => {
 
     let isValid;
     try {
-      await signChallengeTransaction({
+      await Server.signChallengeTransaction({
         accountKp,
         challengeTx: invalidChallengeTx,
         networkPassphrase,