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Preserve insertion order for claims #656

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Merged
merged 4 commits into from
Mar 27, 2023
Merged

Preserve insertion order for claims #656

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2050c03
Preserve insertion order for claims
snago Mar 25, 2023
d713cec
Merge branch 'master' into insertion-order
jimmyjames Mar 27, 2023
b8c91b7
Preserve insertion order for JSON claims
snago Mar 27, 2023
c43a241
Oops, remove unintended whitespace
snago Mar 27, 2023
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4 changes: 2 additions & 2 deletions lib/src/main/java/com/auth0/jwt/JWTCreator.java
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Original file line number Diff line number Diff line change
Expand Up @@ -71,8 +71,8 @@ public static class Builder {
private final Map<String, Object> headerClaims;

Builder() {
this.payloadClaims = new HashMap<>();
this.headerClaims = new HashMap<>();
this.payloadClaims = new LinkedHashMap<>();
this.headerClaims = new LinkedHashMap<>();
}

/**
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43 changes: 43 additions & 0 deletions lib/src/test/java/com/auth0/jwt/JWTCreatorTest.java
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Expand Up @@ -4,6 +4,7 @@
import com.auth0.jwt.interfaces.ECDSAKeyProvider;
import com.auth0.jwt.interfaces.RSAKeyProvider;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ObjectNode;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
Expand Down Expand Up @@ -938,4 +939,46 @@ public void shouldCreatePayloadWithNullForList() {
assertThat(jwt, is(notNullValue()));
assertTrue(JWT.decode(jwt).getClaim("name").isNull());
}

@Test
public void shouldPreserveInsertionOrder() throws Exception {
List<String> headerInsertionOrder = new ArrayList<>();
Map<String, Object> header = new LinkedHashMap<>();
for (int i = 0; i < 10; i++) {
String key = "h" + i;
header.put(key, "v" + 1);
headerInsertionOrder.add(key);
}

List<String> payloadInsertionOrder = new ArrayList<>();
JWTCreator.Builder builder = JWTCreator.init().withHeader(header);
for (int i = 0; i < 10; i++) {
String name = "c" + i;
builder = builder.withClaim(name, "v" + i);
payloadInsertionOrder.add(name);
}
String signed = builder.sign(Algorithm.HMAC256("secret"));

assertThat(signed, is(notNullValue()));
String[] parts = signed.split("\\.");
Base64.Decoder urlDecoder = Base64.getUrlDecoder();
String headerJson = new String(urlDecoder.decode(parts[0]), StandardCharsets.UTF_8);
String payloadJson = new String(urlDecoder.decode(parts[1]), StandardCharsets.UTF_8);

ObjectMapper objectMapper = new ObjectMapper();

List<String> headerFields = new ArrayList<>();
objectMapper.readValue(headerJson, ObjectNode.class)
.fieldNames().forEachRemaining(headerFields::add);
headerFields.retainAll(headerInsertionOrder);
assertThat("Header insertion order should be preserved",
headerFields, is(equalTo(headerInsertionOrder)));

List<String> payloadFields = new ArrayList<>();
objectMapper.readValue(payloadJson, ObjectNode.class)
.fieldNames().forEachRemaining(payloadFields::add);
payloadFields.retainAll(payloadInsertionOrder);
assertThat("Claim insertion order should be preserved",
payloadFields, is(equalTo(payloadInsertionOrder)));
}
}