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2 changes: 1 addition & 1 deletion api/pom.xml
Original file line number Diff line number Diff line change
Expand Up @@ -90,7 +90,7 @@
<dependency>
<groupId>com.auth0</groupId>
<artifactId>java-jwt</artifactId>
<version>3.17.0</version>
<version>4.4.0</version>
</dependency>
<dependency>
<groupId>org.apache.maven</groupId>
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6 changes: 4 additions & 2 deletions api/src/main/java/com/messagebird/RequestValidator.java
Original file line number Diff line number Diff line change
Expand Up @@ -5,13 +5,14 @@
import com.auth0.jwt.algorithms.Algorithm;
import com.auth0.jwt.exceptions.JWTVerificationException;
import com.auth0.jwt.exceptions.SignatureVerificationException;
import com.auth0.jwt.interfaces.Clock;
import com.auth0.jwt.interfaces.Claim;
import com.auth0.jwt.interfaces.DecodedJWT;
import com.auth0.jwt.interfaces.JWTVerifier;
import com.messagebird.exceptions.RequestValidationException;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.time.Clock;

/**
* RequestValidator validates request signature signed by MessageBird services.
Expand Down Expand Up @@ -128,7 +129,8 @@ public DecodedJWT validateSignature(Clock clock, String signature, String url, b
if (!skipURLValidation)
builder.withClaim("url_hash", calculateSha256(url.getBytes()));

boolean payloadHashClaimExist = !jwt.getClaim("payload_hash").isNull();
Claim payloadHashClaim = jwt.getClaim("payload_hash");
boolean payloadHashClaimExist = !(payloadHashClaim.isNull() || payloadHashClaim.isMissing());
if (requestBody != null && requestBody.length > 0) {
if (!payloadHashClaimExist) {
throw new RequestValidationException("The Claim 'payload_hash' is not set but payload is present.");
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9 changes: 4 additions & 5 deletions api/src/test/java/com/messagebird/RequestValidatorTest.java
Original file line number Diff line number Diff line change
@@ -1,6 +1,5 @@
package com.messagebird;

import com.auth0.jwt.interfaces.Clock;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.messagebird.exceptions.RequestValidationException;
Expand All @@ -13,7 +12,10 @@

import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.time.Clock;
import java.time.Instant;
import java.time.OffsetDateTime;
import java.time.ZoneId;
import java.util.*;
import java.util.stream.Collectors;

Expand Down Expand Up @@ -64,10 +66,7 @@ public static Collection<Object[]> data() throws IOException {
public void testWebhookSignature() throws Throwable {
RequestValidator validator = new RequestValidator(testCase.secret != null ? testCase.secret : "");

Clock clock = mock(Clock.class);
Date clockDate = spy(Date.from(OffsetDateTime.parse(testCase.timestamp).toInstant()));
when(clock.getToday()).thenReturn(clockDate);

Clock clock = Clock.fixed(OffsetDateTime.parse(testCase.timestamp).toInstant(), ZoneId.systemDefault());
ThrowingRunnable runnable = () -> validator.validateSignature(clock, testCase.token, testCase.url,
(testCase.payload == null) ? null : testCase.payload.getBytes(StandardCharsets.UTF_8));

Expand Down