Reject checksummed addresses

package.json

@@ -87,7 +87,7 @@
     "types-ethereumjs-util": "^0.0.5",
     "typescript": "^2.4.1",
     "web3-provider-engine": "^13.0.1",
-    "web3-typescript-typings": "^0.3.0",
+    "web3-typescript-typings": "^0.3.2",
     "webpack": "^3.1.0"
   },
   "dependencies": {

src/schemas/basic_type_schemas.ts

@@ -1,7 +1,7 @@
 export const addressSchema = {
     id: '/addressSchema',
     type: 'string',
-    pattern: '^0[xX][0-9A-Fa-f]{40}$',
+    pattern: '^0x[0-9a-f]{40}$',
 };
 
 export const numberSchema = {

src/utils/assert.ts

@@ -24,6 +24,10 @@ export const assert = {
     isETHAddressHex(variableName: string, value: string): void {
         const web3 = new Web3();
         this.assert(web3.isAddress(value), this.typeAssertionMessage(variableName, 'ETHAddressHex', value));
+        this.assert(
+            web3.isAddress(value) && !web3.isChecksumAddress(value),
+            'Checksummed addresses are not supported. Convert to lower case before passing',
+        );
     },
     doesBelongToStringEnum(variableName: string, value: string,
                            stringEnum: any /* There is no base type for every string enum */): void {

test/0x.js_test.ts

@@ -57,7 +57,7 @@ describe('ZeroEx library', () => {
             ).to.become(false);
         });
         it('should return false if the address doesn\'t pertain to the signature & data', async () => {
-            const validUnrelatedAddress = '0x8b0292B11a196601eD2ce54B665CaFEca0347D42';
+            const validUnrelatedAddress = '0x8b0292b11a196601ed2ce54b665cafeca0347d42';
             expect(ZeroEx.isValidSignature(dataHex, signature, validUnrelatedAddress)).to.be.false();
             return expect(
                 (zeroEx.exchange as any)._isValidSignatureUsingContractCallAsync(dataHex, signature,

test/schema_test.ts

@@ -42,11 +42,15 @@ describe('Schema', () => {
     });
     describe('#addressSchema', () => {
         it('should validate valid addresses', () => {
-            const testCases = ['0x8b0292B11a196601eD2ce54B665CaFEca0347D42', constants.NULL_ADDRESS];
+            const testCases = ['0x8b0292b11a196601ed2ce54b665cafeca0347d42', constants.NULL_ADDRESS];
             validateAgainstSchema(testCases, addressSchema);
         });
         it('should fail for invalid addresses', () => {
-            const testCases = ['0x', '0', '0x00', '0xzzzzzzB11a196601eD2ce54B665CaFEca0347D42'];
+            const testCases = [
+                '0x',
+                '0',
+                '0x00',
+                '0xzzzzzzB11a196601eD2ce54B665CaFEca0347D42', '0x8b0292B11a196601eD2ce54B665CaFEca0347D42'];
             const shouldFail = true;
             validateAgainstSchema(testCases, addressSchema, shouldFail);
         });
@@ -159,7 +163,7 @@ describe('Schema', () => {
             name: 'Zero Ex',
             symbol: 'ZRX',
             decimals: 100500,
-            address: '0x8b0292B11a196601eD2ce54B665CaFEca0347D42',
+            address: '0x8b0292b11a196601ed2ce54b665cafeca0347d42',
             url: 'https://0xproject.com',
         };
         it('should validate valid token', () => {

yarn.lock

@@ -5047,9 +5047,9 @@ web3-provider-engine@^8.4.0:
     xhr "^2.2.0"
     xtend "^4.0.1"
 
-web3-typescript-typings@^0.3.0:
-  version "0.3.0"
-  resolved "https://registry.yarnpkg.com/web3-typescript-typings/-/web3-typescript-typings-0.3.0.tgz#1df583d8d9012059802dee90f72144576e0ab4fe"
+web3-typescript-typings@^0.3.2:
+  version "0.3.2"
+  resolved "https://registry.yarnpkg.com/web3-typescript-typings/-/web3-typescript-typings-0.3.2.tgz#75f65fe452e35e2b96192908199dbb7a9ab5bcc3"
   dependencies:
     bignumber.js "^4.0.2"