// Copyright 2010 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. package tls import ( "bytes" "io" "net" "testing" ) func TestRoundUp(t *testing.T) { if roundUp(0, 16) != 0 || roundUp(1, 16) != 16 || roundUp(15, 16) != 16 || roundUp(16, 16) != 16 || roundUp(17, 16) != 32 { t.Error("roundUp broken") } } var paddingTests = []struct { in []byte good bool expectedLen int }{ {[]byte{1, 2, 3, 4, 0}, true, 4}, {[]byte{1, 2, 3, 4, 0, 1}, false, 0}, {[]byte{1, 2, 3, 4, 99, 99}, false, 0}, {[]byte{1, 2, 3, 4, 1, 1}, true, 4}, {[]byte{1, 2, 3, 2, 2, 2}, true, 3}, {[]byte{1, 2, 3, 3, 3, 3}, true, 2}, {[]byte{1, 2, 3, 4, 3, 3}, false, 0}, {[]byte{1, 4, 4, 4, 4, 4}, true, 1}, {[]byte{5, 5, 5, 5, 5, 5}, true, 0}, {[]byte{6, 6, 6, 6, 6, 6}, false, 0}, } func TestRemovePadding(t *testing.T) { for i, test := range paddingTests { payload, good := removePadding(test.in) expectedGood := byte(255) if !test.good { expectedGood = 0 } if good != expectedGood { t.Errorf("#%d: wrong validity, want:%d got:%d", i, expectedGood, good) } if good == 255 && len(payload) != test.expectedLen { t.Errorf("#%d: got %d, want %d", i, len(payload), test.expectedLen) } } } var certExampleCom = `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` var certWildcardExampleCom = `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` var certFooExampleCom = `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` var certDoubleWildcardExampleCom = `308201443081f1a003020102020101300b06092a864886f70d010105301e311c301a060355040a131354657374696e67204365727469666963617465301e170d3131313030313139303134315a170d3132303933303139303134315a301e311c301a060355040a131354657374696e67204365727469666963617465305a300b06092a864886f70d010101034b003048024100bced6e32368599eeddf18796bfd03958a154f87e5b084f96e85136a56b886733592f493f0fc68b0d6b3551781cb95e13c5de458b28d6fb60d20a9129313261410203010001a31e301c301a0603551d1104133011820f2a2e2a2e6578616d706c652e636f6d300b06092a864886f70d0101050341001c3de267975f56ef57771c6218ef95ecc65102e57bd1defe6f7efea90d9b26cf40de5bd7ad75e46201c7f2a92aaa3e907451e9409f65e28ddb6db80d726290f6` func TestCertificateSelection(t *testing.T) { config := Config{ Certificates: []Certificate{ { Certificate: [][]byte{fromHex(certExampleCom)}, }, { Certificate: [][]byte{fromHex(certWildcardExampleCom)}, }, { Certificate: [][]byte{fromHex(certFooExampleCom)}, }, { Certificate: [][]byte{fromHex(certDoubleWildcardExampleCom)}, }, }, } config.BuildNameToCertificate() pointerToIndex := func(c *Certificate) int { for i := range config.Certificates { if c == &config.Certificates[i] { return i } } return -1 } certificateForName := func(name string) *Certificate { clientHello := &ClientHelloInfo{ ServerName: name, } if cert, err := config.getCertificate(clientHello); err != nil { t.Errorf("unable to get certificate for name '%s': %s", name, err) return nil } else { return cert } } if n := pointerToIndex(certificateForName("example.com")); n != 0 { t.Errorf("example.com returned certificate %d, not 0", n) } if n := pointerToIndex(certificateForName("bar.example.com")); n != 1 { t.Errorf("bar.example.com returned certificate %d, not 1", n) } if n := pointerToIndex(certificateForName("foo.example.com")); n != 2 { t.Errorf("foo.example.com returned certificate %d, not 2", n) } if n := pointerToIndex(certificateForName("foo.bar.example.com")); n != 3 { t.Errorf("foo.bar.example.com returned certificate %d, not 3", n) } if n := pointerToIndex(certificateForName("foo.bar.baz.example.com")); n != 0 { t.Errorf("foo.bar.baz.example.com returned certificate %d, not 0", n) } } // Run with multiple crypto configs to test the logic for computing TLS record overheads. func runDynamicRecordSizingTest(t *testing.T, config *Config) { clientConn, serverConn := net.Pipe() serverConfig := config.clone() serverConfig.DynamicRecordSizingDisabled = false tlsConn := Server(serverConn, serverConfig) recordSizesChan := make(chan []int, 1) go func() { // This goroutine performs a TLS handshake over clientConn and // then reads TLS records until EOF. It writes a slice that // contains all the record sizes to recordSizesChan. defer close(recordSizesChan) defer clientConn.Close() tlsConn := Client(clientConn, config) if err := tlsConn.Handshake(); err != nil { t.Errorf("Error from client handshake: %s", err) return } var recordHeader [recordHeaderLen]byte var record []byte var recordSizes []int for { n, err := clientConn.Read(recordHeader[:]) if err == io.EOF { break } if err != nil || n != len(recordHeader) { t.Errorf("Error from client read: %s", err) return } length := int(recordHeader[3])<<8 | int(recordHeader[4]) if len(record) < length { record = make([]byte, length) } n, err = clientConn.Read(record[:length]) if err != nil || n != length { t.Errorf("Error from client read: %s", err) return } // The last record will be a close_notify alert, which // we don't wish to record. if recordType(recordHeader[0]) == recordTypeApplicationData { recordSizes = append(recordSizes, recordHeaderLen+length) } } recordSizesChan <- recordSizes }() if err := tlsConn.Handshake(); err != nil { t.Fatalf("Error from server handshake: %s", err) } // The server writes these plaintexts in order. plaintext := bytes.Join([][]byte{ bytes.Repeat([]byte("x"), recordSizeBoostThreshold), bytes.Repeat([]byte("y"), maxPlaintext*2), bytes.Repeat([]byte("z"), maxPlaintext), }, nil) if _, err := tlsConn.Write(plaintext); err != nil { t.Fatalf("Error from server write: %s", err) } if err := tlsConn.Close(); err != nil { t.Fatalf("Error from server close: %s", err) } recordSizes := <-recordSizesChan if recordSizes == nil { t.Fatalf("Client encountered an error") } // Drop the size of last record, which is likely to be truncated. recordSizes = recordSizes[:len(recordSizes)-1] // recordSizes should contain a series of records smaller than // tcpMSSEstimate followed by some larger than maxPlaintext. seenLargeRecord := false for i, size := range recordSizes { if !seenLargeRecord { if size > (i+1)*tcpMSSEstimate { t.Fatalf("Record #%d has size %d, which is too large too soon", i, size) } if size >= maxPlaintext { seenLargeRecord = true } } else if size <= maxPlaintext { t.Fatalf("Record #%d has size %d but should be full sized", i, size) } } if !seenLargeRecord { t.Fatalf("No large records observed") } } func TestDynamicRecordSizingWithStreamCipher(t *testing.T) { config := testConfig.clone() config.CipherSuites = []uint16{TLS_RSA_WITH_RC4_128_SHA} runDynamicRecordSizingTest(t, config) } func TestDynamicRecordSizingWithCBC(t *testing.T) { config := testConfig.clone() config.CipherSuites = []uint16{TLS_RSA_WITH_AES_256_CBC_SHA} runDynamicRecordSizingTest(t, config) } func TestDynamicRecordSizingWithAEAD(t *testing.T) { config := testConfig.clone() config.CipherSuites = []uint16{TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256} runDynamicRecordSizingTest(t, config) }