org.eclipse.jgit.test/tst/org/eclipse/jgit/transport/HMACSHA1NonceGeneratorTest.java

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package org.eclipse.jgit.transport;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotEquals;

import org.eclipse.jgit.internal.storage.dfs.DfsRepositoryDescription;
import org.eclipse.jgit.internal.storage.dfs.InMemoryRepository;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.transport.PushCertificate.NonceStatus;
import org.junit.Before;
import org.junit.Test;

/** Test for HMAC SHA-1 certificate verifier. */
public class HMACSHA1NonceGeneratorTest {
	private static final long TS = 1433954361;

	private HMACSHA1NonceGenerator gen;
	private Repository db;

	@Before
	public void setUp() {
		gen = new HMACSHA1NonceGenerator("sekret");
		db = new InMemoryRepository(new DfsRepositoryDescription("db"));
	}

	@Test
	public void missing() throws Exception {
		assertEquals(NonceStatus.MISSING, gen.verify("", "1234", db, false, 0));
	}

	@Test
	public void unsolicited() throws Exception {
		assertEquals(NonceStatus.UNSOLICITED, gen.verify("1234", "", db, false, 0));
	}

	@Test
	public void invalidFormat() throws Exception {
		String sent = gen.createNonce(db, TS);
		int idx = sent.indexOf('-');
		String sig = sent.substring(idx, sent.length() - idx);
		assertEquals(NonceStatus.BAD,
				gen.verify(Long.toString(TS), sent, db, true, 100));
		assertEquals(NonceStatus.BAD, gen.verify(sig, sent, db, true, 100));
		assertEquals(NonceStatus.BAD, gen.verify("xxx-" + sig, sent, db, true, 100));
		assertEquals(NonceStatus.BAD, gen.verify(sent, "xxx-" + sig, db, true, 100));
	}

	@Test
	public void slop() throws Exception {
		String sent = gen.createNonce(db, TS - 10);
		String received = gen.createNonce(db, TS);
		assertEquals(NonceStatus.BAD,
				gen.verify(received, sent, db, false, 0));
		assertEquals(NonceStatus.BAD,
				gen.verify(received, sent, db, false, 11));
		assertEquals(NonceStatus.SLOP,
				gen.verify(received, sent, db, true, 0));
		assertEquals(NonceStatus.SLOP,
				gen.verify(received, sent, db, true, 9));
		assertEquals(NonceStatus.OK,
				gen.verify(received, sent, db, true, 10));
		assertEquals(NonceStatus.OK,
				gen.verify(received, sent, db, true, 11));
	}

	@Test
	public void ok() throws Exception {
		String sent = gen.createNonce(db, TS);
		assertEquals(NonceStatus.OK, gen.verify(sent, sent, db, false, 0));
	}

	@Test
	public void signedByDifferentKey() throws Exception {
		HMACSHA1NonceGenerator other = new HMACSHA1NonceGenerator("other");
		String sent = gen.createNonce(db, TS);
		String received = other.createNonce(db, TS);
		assertNotEquals(received, sent);
		assertEquals(NonceStatus.BAD,
				gen.verify(received, sent, db, false, 0));
	}

	@Test
	public void signedByDifferentKeyWithSlop() throws Exception {
		HMACSHA1NonceGenerator other = new HMACSHA1NonceGenerator("other");
		String sent = gen.createNonce(db, TS - 10);
		String received = other.createNonce(db, TS);
		assertEquals(NonceStatus.BAD, gen.verify(received, sent, db, true, 100));
	}
}