// Copyright 2011 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 x509

import (
	"crypto"
	"crypto/ecdsa"
	"crypto/elliptic"
	"crypto/rand"
	"crypto/x509/pkix"
	"encoding/pem"
	"errors"
	"fmt"
	"math/big"
	"runtime"
	"strings"
	"testing"
	"time"
)

type verifyTest struct {
	leaf                 string
	intermediates        []string
	roots                []string
	currentTime          int64
	dnsName              string
	systemSkip           bool
	keyUsages            []ExtKeyUsage
	testSystemRootsError bool
	sha2                 bool
	ignoreCN             bool

	errorCallback  func(*testing.T, int, error) bool
	expectedChains [][]string
}

var verifyTests = []verifyTest{
	{
		leaf:                 googleLeaf,
		intermediates:        []string{giag2Intermediate},
		currentTime:          1395785200,
		dnsName:              "www.google.com",
		testSystemRootsError: true,

		// Without any roots specified we should get a system roots
		// error.
		errorCallback: expectSystemRootsError,
	},
	{
		leaf:          googleLeaf,
		intermediates: []string{giag2Intermediate},
		roots:         []string{geoTrustRoot},
		currentTime:   1395785200,
		dnsName:       "www.google.com",

		expectedChains: [][]string{
			{"Google", "Google Internet Authority", "GeoTrust"},
		},
	},
	{
		leaf:          googleLeaf,
		intermediates: []string{giag2Intermediate},
		roots:         []string{geoTrustRoot},
		currentTime:   1395785200,
		dnsName:       "WwW.GooGLE.coM",

		expectedChains: [][]string{
			{"Google", "Google Internet Authority", "GeoTrust"},
		},
	},
	{
		leaf:          googleLeaf,
		intermediates: []string{giag2Intermediate},
		roots:         []string{geoTrustRoot},
		currentTime:   1395785200,
		dnsName:       "www.example.com",

		errorCallback: expectHostnameError("certificate is valid for"),
	},
	{
		leaf:          googleLeaf,
		intermediates: []string{giag2Intermediate},
		roots:         []string{geoTrustRoot},
		currentTime:   1395785200,
		dnsName:       "1.2.3.4",

		errorCallback: expectHostnameError("doesn't contain any IP SANs"),
	},
	{
		leaf:          googleLeaf,
		intermediates: []string{giag2Intermediate},
		roots:         []string{geoTrustRoot},
		currentTime:   1,
		dnsName:       "www.example.com",

		errorCallback: expectExpired,
	},
	{
		leaf:        googleLeaf,
		roots:       []string{geoTrustRoot},
		currentTime: 1395785200,
		dnsName:     "www.google.com",

		// Skip when using systemVerify, since Windows
		// *will* find the missing intermediate cert.
		systemSkip:    true,
		errorCallback: expectAuthorityUnknown,
	},
	{
		leaf:          googleLeaf,
		intermediates: []string{geoTrustRoot, giag2Intermediate},
		roots:         []string{geoTrustRoot},
		currentTime:   1395785200,
		dnsName:       "www.google.com",

		expectedChains: [][]string{
			{"Google", "Google Internet Authority", "GeoTrust"},
		},
		// CAPI doesn't build the chain with the duplicated GeoTrust
		// entry so the results don't match. Thus we skip this test
		// until that's fixed.
		systemSkip: true,
	},
	{
		leaf:          dnssecExpLeaf,
		intermediates: []string{startComIntermediate},
		roots:         []string{startComRoot},
		currentTime:   1302726541,

		expectedChains: [][]string{
			{"dnssec-exp", "StartCom Class 1", "StartCom Certification Authority"},
		},
	},
	{
		leaf:          dnssecExpLeaf,
		intermediates: []string{startComIntermediate, startComRoot},
		roots:         []string{startComRoot},
		currentTime:   1302726541,

		expectedChains: [][]string{
			{"dnssec-exp", "StartCom Class 1", "StartCom Certification Authority"},
		},
	},
	{
		leaf:          googleLeafWithInvalidHash,
		intermediates: []string{giag2Intermediate},
		roots:         []string{geoTrustRoot},
		currentTime:   1395785200,
		dnsName:       "www.google.com",

		// The specific error message may not occur when using system
		// verification.
		systemSkip:    true,
		errorCallback: expectHashError,
	},
	{
		// The default configuration should reject an S/MIME chain.
		leaf:        smimeLeaf,
		roots:       []string{smimeIntermediate},
		currentTime: 1339436154,

		// Key usage not implemented for Windows yet.
		systemSkip:    true,
		errorCallback: expectUsageError,
	},
	{
		leaf:        smimeLeaf,
		roots:       []string{smimeIntermediate},
		currentTime: 1339436154,
		keyUsages:   []ExtKeyUsage{ExtKeyUsageServerAuth},

		// Key usage not implemented for Windows yet.
		systemSkip:    true,
		errorCallback: expectUsageError,
	},
	{
		leaf:        smimeLeaf,
		roots:       []string{smimeIntermediate},
		currentTime: 1339436154,
		keyUsages:   []ExtKeyUsage{ExtKeyUsageEmailProtection},

		// Key usage not implemented for Windows yet.
		systemSkip: true,
		expectedChains: [][]string{
			{"Ryan Hurst", "GlobalSign PersonalSign 2 CA - G2"},
		},
	},
	{
		leaf:          megaLeaf,
		intermediates: []string{comodoIntermediate1},
		roots:         []string{comodoRoot},
		currentTime:   1360431182,

		// CryptoAPI can find alternative validation paths so we don't
		// perform this test with system validation.
		systemSkip: true,
		expectedChains: [][]string{
			{"mega.co.nz", "EssentialSSL CA", "COMODO Certification Authority"},
		},
	},
	{
		// Check that a name constrained intermediate works even when
		// it lists multiple constraints.
		leaf:          nameConstraintsLeaf,
		intermediates: []string{nameConstraintsIntermediate1, nameConstraintsIntermediate2},
		roots:         []string{globalSignRoot},
		currentTime:   1382387896,
		dnsName:       "secure.iddl.vt.edu",

		expectedChains: [][]string{
			{
				"Technology-enhanced Learning and Online Strategies",
				"Virginia Tech Global Qualified Server CA",
				"Trusted Root CA G2",
				"GlobalSign Root CA",
			},
		},
	},
	{
		// Check that SHA-384 intermediates (which are popping up)
		// work.
		leaf:          moipLeafCert,
		intermediates: []string{comodoIntermediateSHA384, comodoRSAAuthority},
		roots:         []string{addTrustRoot},
		currentTime:   1397502195,
		dnsName:       "api.moip.com.br",

		// CryptoAPI can find alternative validation paths so we don't
		// perform this test with system validation.
		systemSkip: true,

		sha2: true,
		expectedChains: [][]string{
			{
				"api.moip.com.br",
				"COMODO RSA Extended Validation Secure Server CA",
				"COMODO RSA Certification Authority",
				"AddTrust External CA Root",
			},
		},
	},
	{
		// Putting a certificate as a root directly should work as a
		// way of saying “exactly this”.
		leaf:        selfSigned,
		roots:       []string{selfSigned},
		currentTime: 1471624472,
		dnsName:     "foo.example",
		systemSkip:  true,

		expectedChains: [][]string{
			{"Acme Co"},
		},
	},
	{
		// Putting a certificate as a root directly should not skip
		// other checks however.
		leaf:        selfSigned,
		roots:       []string{selfSigned},
		currentTime: 1471624472,
		dnsName:     "notfoo.example",
		systemSkip:  true,

		errorCallback: expectHostnameError("certificate is valid for"),
	},
	{
		// The issuer name in the leaf doesn't exactly match the
		// subject name in the root. Go does not perform
		// canonicalization and so should reject this. See issue 14955.
		leaf:        issuerSubjectMatchLeaf,
		roots:       []string{issuerSubjectMatchRoot},
		currentTime: 1475787715,
		systemSkip:  true,

		errorCallback: expectSubjectIssuerMismatcthError,
	},
	{
		// An X.509 v1 certificate should not be accepted as an
		// intermediate.
		leaf:          x509v1TestLeaf,
		intermediates: []string{x509v1TestIntermediate},
		roots:         []string{x509v1TestRoot},
		currentTime:   1481753183,
		systemSkip:    true,

		errorCallback: expectNotAuthorizedError,
	},
	{
		// If any SAN extension is present (even one without any DNS
		// names), the CN should be ignored.
		leaf:        ignoreCNWithSANLeaf,
		dnsName:     "foo.example.com",
		roots:       []string{ignoreCNWithSANRoot},
		currentTime: 1486684488,
		systemSkip:  true,

		errorCallback: expectHostnameError("certificate is not valid for any names"),
	},
	{
		// Test that excluded names are respected.
		leaf:          excludedNamesLeaf,
		dnsName:       "bender.local",
		intermediates: []string{excludedNamesIntermediate},
		roots:         []string{excludedNamesRoot},
		currentTime:   1486684488,
		systemSkip:    true,

		errorCallback: expectNameConstraintsError,
	},
	{
		// Test that unknown critical extensions in a leaf cause a
		// verify error.
		leaf:          criticalExtLeafWithExt,
		dnsName:       "example.com",
		intermediates: []string{criticalExtIntermediate},
		roots:         []string{criticalExtRoot},
		currentTime:   1486684488,
		systemSkip:    true,

		errorCallback: expectUnhandledCriticalExtension,
	},
	{
		// Test that unknown critical extensions in an intermediate
		// cause a verify error.
		leaf:          criticalExtLeaf,
		dnsName:       "example.com",
		intermediates: []string{criticalExtIntermediateWithExt},
		roots:         []string{criticalExtRoot},
		currentTime:   1486684488,
		systemSkip:    true,

		errorCallback: expectUnhandledCriticalExtension,
	},
	{
		// Test that invalid CN are ignored.
		leaf:        invalidCNWithoutSAN,
		dnsName:     "foo,invalid",
		roots:       []string{invalidCNRoot},
		currentTime: 1540000000,
		systemSkip:  true,

		errorCallback: expectHostnameError("Common Name is not a valid hostname"),
	},
	{
		// Test that valid CN are respected.
		leaf:        validCNWithoutSAN,
		dnsName:     "foo.example.com",
		roots:       []string{invalidCNRoot},
		currentTime: 1540000000,
		systemSkip:  true,

		expectedChains: [][]string{
			{"foo.example.com", "Test root"},
		},
	},
	// Replicate CN tests with ignoreCN = true
	{
		leaf:        ignoreCNWithSANLeaf,
		dnsName:     "foo.example.com",
		roots:       []string{ignoreCNWithSANRoot},
		currentTime: 1486684488,
		systemSkip:  true,
		ignoreCN:    true,

		errorCallback: expectHostnameError("certificate is not valid for any names"),
	},
	{
		leaf:        invalidCNWithoutSAN,
		dnsName:     "foo,invalid",
		roots:       []string{invalidCNRoot},
		currentTime: 1540000000,
		systemSkip:  true,
		ignoreCN:    true,

		errorCallback: expectHostnameError("Common Name is not a valid hostname"),
	},
	{
		leaf:        validCNWithoutSAN,
		dnsName:     "foo.example.com",
		roots:       []string{invalidCNRoot},
		currentTime: 1540000000,
		systemSkip:  true,
		ignoreCN:    true,

		errorCallback: expectHostnameError("not valid for any names"),
	},
	{
		// A certificate with an AKID should still chain to a parent without SKID.
		// See Issue 30079.
		leaf:        leafWithAKID,
		roots:       []string{rootWithoutSKID},
		currentTime: 1550000000,
		dnsName:     "example",
		systemSkip:  true,

		expectedChains: [][]string{
			{"Acme LLC", "Acme Co"},
		},
	},
}

func expectHostnameError(msg string) func(*testing.T, int, error) bool {
	return func(t *testing.T, i int, err error) (ok bool) {
		if _, ok := err.(HostnameError); !ok {
			t.Errorf("#%d: error was not a HostnameError: %v", i, err)
			return false
		}
		if !strings.Contains(err.Error(), msg) {
			t.Errorf("#%d: HostnameError did not contain %q: %v", i, msg, err)
		}
		return true
	}
}

func expectExpired(t *testing.T, i int, err error) (ok bool) {
	if inval, ok := err.(CertificateInvalidError); !ok || inval.Reason != Expired {
		t.Errorf("#%d: error was not Expired: %v", i, err)
		return false
	}
	return true
}

func expectUsageError(t *testing.T, i int, err error) (ok bool) {
	if inval, ok := err.(CertificateInvalidError); !ok || inval.Reason != IncompatibleUsage {
		t.Errorf("#%d: error was not IncompatibleUsage: %v", i, err)
		return false
	}
	return true
}

func expectAuthorityUnknown(t *testing.T, i int, err error) (ok bool) {
	e, ok := err.(UnknownAuthorityError)
	if !ok {
		t.Errorf("#%d: error was not UnknownAuthorityError: %v", i, err)
		return false
	}
	if e.Cert == nil {
		t.Errorf("#%d: error was UnknownAuthorityError, but missing Cert: %v", i, err)
		return false
	}
	return true
}

func expectSystemRootsError(t *testing.T, i int, err error) bool {
	if _, ok := err.(SystemRootsError); !ok {
		t.Errorf("#%d: error was not SystemRootsError: %v", i, err)
		return false
	}
	return true
}

func expectHashError(t *testing.T, i int, err error) bool {
	if err == nil {
		t.Errorf("#%d: no error resulted from invalid hash", i)
		return false
	}
	if expected := "algorithm unimplemented"; !strings.Contains(err.Error(), expected) {
		t.Errorf("#%d: error resulting from invalid hash didn't contain '%s', rather it was: %v", i, expected, err)
		return false
	}
	return true
}

func expectSubjectIssuerMismatcthError(t *testing.T, i int, err error) (ok bool) {
	if inval, ok := err.(CertificateInvalidError); !ok || inval.Reason != NameMismatch {
		t.Errorf("#%d: error was not a NameMismatch: %v", i, err)
		return false
	}
	return true
}

func expectNameConstraintsError(t *testing.T, i int, err error) (ok bool) {
	if inval, ok := err.(CertificateInvalidError); !ok || inval.Reason != CANotAuthorizedForThisName {
		t.Errorf("#%d: error was not a CANotAuthorizedForThisName: %v", i, err)
		return false
	}
	return true
}

func expectNotAuthorizedError(t *testing.T, i int, err error) (ok bool) {
	if inval, ok := err.(CertificateInvalidError); !ok || inval.Reason != NotAuthorizedToSign {
		t.Errorf("#%d: error was not a NotAuthorizedToSign: %v", i, err)
		return false
	}
	return true
}

func expectUnhandledCriticalExtension(t *testing.T, i int, err error) (ok bool) {
	if _, ok := err.(UnhandledCriticalExtension); !ok {
		t.Errorf("#%d: error was not an UnhandledCriticalExtension: %v", i, err)
		return false
	}
	return true
}

func certificateFromPEM(pemBytes string) (*Certificate, error) {
	block, _ := pem.Decode([]byte(pemBytes))
	if block == nil {
		return nil, errors.New("failed to decode PEM")
	}
	return ParseCertificate(block.Bytes)
}

func testVerify(t *testing.T, useSystemRoots bool) {
	defer func(savedIgnoreCN bool) {
		ignoreCN = savedIgnoreCN
	}(ignoreCN)
	for i, test := range verifyTests {
		if useSystemRoots && test.systemSkip {
			continue
		}
		if runtime.GOOS == "windows" && test.testSystemRootsError {
			continue
		}

		ignoreCN = test.ignoreCN
		opts := VerifyOptions{
			Intermediates: NewCertPool(),
			DNSName:       test.dnsName,
			CurrentTime:   time.Unix(test.currentTime, 0),
			KeyUsages:     test.keyUsages,
		}

		if !useSystemRoots {
			opts.Roots = NewCertPool()
			for j, root := range test.roots {
				ok := opts.Roots.AppendCertsFromPEM([]byte(root))
				if !ok {
					t.Errorf("#%d: failed to parse root #%d", i, j)
					return
				}
			}
		}

		for j, intermediate := range test.intermediates {
			ok := opts.Intermediates.AppendCertsFromPEM([]byte(intermediate))
			if !ok {
				t.Errorf("#%d: failed to parse intermediate #%d", i, j)
				return
			}
		}

		leaf, err := certificateFromPEM(test.leaf)
		if err != nil {
			t.Errorf("#%d: failed to parse leaf: %v", i, err)
			return
		}

		var oldSystemRoots *CertPool
		if test.testSystemRootsError {
			oldSystemRoots = systemRootsPool()
			systemRoots = nil
			opts.Roots = nil
		}

		chains, err := leaf.Verify(opts)

		if test.testSystemRootsError {
			systemRoots = oldSystemRoots
		}

		if test.errorCallback == nil && err != nil {
			t.Errorf("#%d: unexpected error: %v", i, err)
		}
		if test.errorCallback != nil {
			if !test.errorCallback(t, i, err) {
				return
			}
		}

		if len(chains) != len(test.expectedChains) {
			t.Errorf("#%d: wanted %d chains, got %d", i, len(test.expectedChains), len(chains))
		}

		// We check that each returned chain matches a chain from
		// expectedChains but an entry in expectedChains can't match
		// two chains.
		seenChains := make([]bool, len(chains))
	NextOutputChain:
		for _, chain := range chains {
		TryNextExpected:
			for j, expectedChain := range test.expectedChains {
				if seenChains[j] {
					continue
				}
				if len(chain) != len(expectedChain) {
					continue
				}
				for k, cert := range chain {
					if !strings.Contains(nameToKey(&cert.Subject), expectedChain[k]) {
						continue TryNextExpected
					}
				}
				// we matched
				seenChains[j] = true
				continue NextOutputChain
			}
			t.Errorf("#%d: No expected chain matched %s", i, chainToDebugString(chain))
		}
	}
}

func TestGoVerify(t *testing.T) {
	testVerify(t, false)
}

func TestSystemVerify(t *testing.T) {
	if runtime.GOOS != "windows" {
		t.Skipf("skipping verify test using system APIs on %q", runtime.GOOS)
	}

	testVerify(t, true)
}

func chainToDebugString(chain []*Certificate) string {
	var chainStr string
	for _, cert := range chain {
		if len(chainStr) > 0 {
			chainStr += " -> "
		}
		chainStr += nameToKey(&cert.Subject)
	}
	return chainStr
}

func nameToKey(name *pkix.Name) string {
	return strings.Join(name.Country, ",") + "/" + strings.Join(name.Organization, ",") + "/" + strings.Join(name.OrganizationalUnit, ",") + "/" + name.CommonName
}

const geoTrustRoot = `-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
`

const giag2Intermediate = `-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
`

const googleLeaf = `-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
`

// googleLeafWithInvalidHash is the same as googleLeaf, but the signature
// algorithm in the certificate contains a nonsense OID.
const googleLeafWithInvalidHash = `-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
`

const dnssecExpLeaf = `-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----`

const startComIntermediate = `-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----`

const startComRoot = `-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----`

const smimeLeaf = `-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----`

const smimeIntermediate = `-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----`

var megaLeaf = `-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----`

var comodoIntermediate1 = `-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----`

var comodoRoot = `-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----`

var nameConstraintsLeaf = `-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----`

var nameConstraintsIntermediate1 = `-----BEGIN CERTIFICATE-----
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var nameConstraintsIntermediate2 = `-----BEGIN CERTIFICATE-----
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var globalSignRoot = `-----BEGIN CERTIFICATE-----
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var comodoIntermediateSHA384 = `-----BEGIN CERTIFICATE-----
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b2NhLmNvbS9DT01PRE9SU0FDZXJ0aWZpY2F0aW9uQXV0aG9yaXR5LmNybDBxBggr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-----END CERTIFICATE-----`

const comodoRSAAuthority = `-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----`

const addTrustRoot = `-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----`

const selfSigned = `-----BEGIN CERTIFICATE-----
MIIC/DCCAeSgAwIBAgIRAK0SWRVmi67xU3z0gkgY+PkwDQYJKoZIhvcNAQELBQAw
EjEQMA4GA1UEChMHQWNtZSBDbzAeFw0xNjA4MTkxNjMzNDdaFw0xNzA4MTkxNjMz
NDdaMBIxEDAOBgNVBAoTB0FjbWUgQ28wggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAw
ggEKAoIBAQDWkm1kdCwxyKEt6OTmZitkmLGH8cQu9z7rUdrhW8lWNm4kh2SuaUWP
pscBjda5iqg51aoKuWJR2rw6ElDne+X5eit2FT8zJgAU8v39lMFjbaVZfS9TFOYF
w0Tk0Luo/PyKJpZnwhsP++iiGQiteJbndy8aLKmJ2MpLfpDGIgxEIyNb5dgoDi0D
WReDCpE6K9WDYqvKVGnQ2Jvqqra6Gfx0tFkuqJxQuqA8aUOlPHcCH4KBZdNEoXdY
YL3E4dCAh0YiDs80wNZx4cHqEM3L8gTEFqW2Tn1TSuPZO6gjJ9QPsuUZVjaMZuuO
NVxqLGujZkDzARhC3fBpptMuaAfi20+BAgMBAAGjTTBLMA4GA1UdDwEB/wQEAwIF
oDATBgNVHSUEDDAKBggrBgEFBQcDATAMBgNVHRMBAf8EAjAAMBYGA1UdEQQPMA2C
C2Zvby5leGFtcGxlMA0GCSqGSIb3DQEBCwUAA4IBAQBPvvfnDhsHWt+/cfwdAVim
4EDn+hYOMkTQwU0pouYIvY8QXYkZ8MBxpBtBMK4JhFU+ewSWoBAEH2dCCvx/BDxN
UGTSJHMbsvJHcFvdmsvvRxOqQ/cJz7behx0cfoeHMwcs0/vWv8ms5wHesb5Ek7L0
pl01FCBGTcncVqr6RK1r4fTpeCCfRIERD+YRJz8TtPH6ydesfLL8jIV40H8NiDfG
vRAvOtNiKtPzFeQVdbRPOskC4rcHyPeiDAMAMixeLi63+CFty4da3r5lRezeedCE
cw3ESZzThBwWqvPOtJdpXdm+r57pDW8qD+/0lY8wfImMNkQAyCUCLg/1Lxt/hrBj
-----END CERTIFICATE-----`

const issuerSubjectMatchRoot = `
Certificate:
    Data:
        Version: 3 (0x2)
        Serial Number: 161640039802297062 (0x23e42c281e55ae6)
    Signature Algorithm: sha256WithRSAEncryption
        Issuer: O=Golang, CN=Root ca
        Validity
            Not Before: Jan  1 00:00:00 2015 GMT
            Not After : Jan  1 00:00:00 2025 GMT
        Subject: O=Golang, CN=Root ca
        Subject Public Key Info:
            Public Key Algorithm: rsaEncryption
                Public-Key: (1024 bit)
                Modulus:
                    00:e9:0e:7f:11:0c:e6:5a:e6:86:83:70:f6:51:07:
                    2e:02:78:11:f5:b2:24:92:38:ee:26:62:02:c7:94:
                    f1:3e:a1:77:6a:c0:8f:d5:22:68:b6:5d:e2:4c:da:
                    e0:85:11:35:c2:92:72:49:8d:81:b4:88:97:6b:b7:
                    fc:b2:44:5b:d9:4d:06:70:f9:0c:c6:8f:e9:b3:df:
                    a3:6a:84:6c:43:59:be:9d:b2:d0:76:9b:c3:d7:fa:
                    99:59:c3:b8:e5:f3:53:03:bd:49:d6:b3:cc:a2:43:
                    fe:ad:c2:0b:b9:01:b8:56:29:94:03:24:a7:0d:28:
                    21:29:a9:ae:94:5b:4a:f9:9f
                Exponent: 65537 (0x10001)
        X509v3 extensions:
            X509v3 Key Usage: critical
                Certificate Sign
            X509v3 Extended Key Usage:
                TLS Web Server Authentication, TLS Web Client Authentication
            X509v3 Basic Constraints: critical
                CA:TRUE
            X509v3 Subject Key Identifier:
                40:37:D7:01:FB:40:2F:B8:1C:7E:54:04:27:8C:59:01
    Signature Algorithm: sha256WithRSAEncryption
         6f:84:df:49:e0:99:d4:71:66:1d:32:86:56:cb:ea:5a:6b:0e:
         00:6a:d1:5a:6e:1f:06:23:07:ff:cb:d1:1a:74:e4:24:43:0b:
         aa:2a:a0:73:75:25:82:bc:bf:3f:a9:f8:48:88:ac:ed:3a:94:
         3b:0d:d3:88:c8:67:44:61:33:df:71:6c:c5:af:ed:16:8c:bf:
         82:f9:49:bb:e3:2a:07:53:36:37:25:77:de:91:a4:77:09:7f:
         6f:b2:91:58:c4:05:89:ea:8e:fa:e1:3b:19:ef:f8:f6:94:b7:
         7b:27:e6:e4:84:dd:2b:f5:93:f5:3c:d8:86:c5:38:01:56:5c:
         9f:6d
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----`

const issuerSubjectMatchLeaf = `
Certificate:
    Data:
        Version: 3 (0x2)
        Serial Number: 16785088708916013734 (0xe8f09d3fe25beaa6)
    Signature Algorithm: sha256WithRSAEncryption
        Issuer: O=Golang, CN=Root CA
        Validity
            Not Before: Jan  1 00:00:00 2015 GMT
            Not After : Jan  1 00:00:00 2025 GMT
        Subject: O=Golang, CN=Leaf
        Subject Public Key Info:
            Public Key Algorithm: rsaEncryption
                Public-Key: (1024 bit)
                Modulus:
                    00:db:46:7d:93:2e:12:27:06:48:bc:06:28:21:ab:
                    7e:c4:b6:a2:5d:fe:1e:52:45:88:7a:36:47:a5:08:
                    0d:92:42:5b:c2:81:c0:be:97:79:98:40:fb:4f:6d:
                    14:fd:2b:13:8b:c2:a5:2e:67:d8:d4:09:9e:d6:22:
                    38:b7:4a:0b:74:73:2b:c2:34:f1:d1:93:e5:96:d9:
                    74:7b:f3:58:9f:6c:61:3c:c0:b0:41:d4:d9:2b:2b:
                    24:23:77:5b:1c:3b:bd:75:5d:ce:20:54:cf:a1:63:
                    87:1d:1e:24:c4:f3:1d:1a:50:8b:aa:b6:14:43:ed:
                    97:a7:75:62:f4:14:c8:52:d7
                Exponent: 65537 (0x10001)
        X509v3 extensions:
            X509v3 Key Usage: critical
                Digital Signature, Key Encipherment
            X509v3 Extended Key Usage:
                TLS Web Server Authentication, TLS Web Client Authentication
            X509v3 Basic Constraints: critical
                CA:FALSE
            X509v3 Subject Key Identifier:
                9F:91:16:1F:43:43:3E:49:A6:DE:6D:B6:80:D7:9F:60
            X509v3 Authority Key Identifier:
                keyid:40:37:D7:01:FB:40:2F:B8:1C:7E:54:04:27:8C:59:01

    Signature Algorithm: sha256WithRSAEncryption
         8d:86:05:da:89:f5:1d:c5:16:14:41:b9:34:87:2b:5c:38:99:
         e3:d9:5a:5b:7a:5b:de:0b:5c:08:45:09:6f:1c:9d:31:5f:08:
         ca:7a:a3:99:da:83:0b:22:be:4f:02:35:91:4e:5d:5c:37:bf:
         89:22:58:7d:30:76:d2:2f:d0:a0:ee:77:9e:77:c0:d6:19:eb:
         ec:a0:63:35:6a:80:9b:80:1a:80:de:64:bc:40:38:3c:22:69:
         ad:46:26:a2:3d:ea:f4:c2:92:49:16:03:96:ae:64:21:b9:7c:
         ee:64:91:47:81:aa:b4:0c:09:2b:12:1a:b2:f3:af:50:b3:b1:
         ce:24
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
`

const x509v1TestRoot = `
-----BEGIN CERTIFICATE-----
MIICIDCCAYmgAwIBAgIIAj5CwoHlWuYwDQYJKoZIhvcNAQELBQAwIzEPMA0GA1UE
ChMGR29sYW5nMRAwDgYDVQQDEwdSb290IENBMB4XDTE1MDEwMTAwMDAwMFoXDTI1
MDEwMTAwMDAwMFowIzEPMA0GA1UEChMGR29sYW5nMRAwDgYDVQQDEwdSb290IENB
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDpDn8RDOZa5oaDcPZRBy4CeBH1
siSSOO4mYgLHlPE+oXdqwI/VImi2XeJM2uCFETXCknJJjYG0iJdrt/yyRFvZTQZw
+QzGj+mz36NqhGxDWb6dstB2m8PX+plZw7jl81MDvUnWs8yiQ/6twgu5AbhWKZQD
JKcNKCEpqa6UW0r5nwIDAQABo10wWzAOBgNVHQ8BAf8EBAMCAgQwHQYDVR0lBBYw
FAYIKwYBBQUHAwEGCCsGAQUFBwMCMA8GA1UdEwEB/wQFMAMBAf8wGQYDVR0OBBIE
EEA31wH7QC+4HH5UBCeMWQEwDQYJKoZIhvcNAQELBQADgYEAcIwqeNUpQr9cOcYm
YjpGpYkQ6b248xijCK7zI+lOeWN89zfSXn1AvfsC9pSdTMeDklWktbF/Ad0IN8Md
h2NtN34ard0hEfHc8qW8mkXdsysVmq6cPvFYaHz+dBtkHuHDoy8YQnC0zdN/WyYB
/1JmacUUofl+HusHuLkDxmadogI=
-----END CERTIFICATE-----`

const x509v1TestIntermediate = `
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----`

const x509v1TestLeaf = `
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----`

const ignoreCNWithSANRoot = `
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----`

const ignoreCNWithSANLeaf = `
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----`

const excludedNamesLeaf = `
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
`

const excludedNamesIntermediate = `
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----`

const excludedNamesRoot = `
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----`

const invalidCNRoot = `
-----BEGIN CERTIFICATE-----
MIIBFjCBvgIJAIsu4r+jb70UMAoGCCqGSM49BAMCMBQxEjAQBgNVBAsMCVRlc3Qg
cm9vdDAeFw0xODA3MTExODMyMzVaFw0yODA3MDgxODMyMzVaMBQxEjAQBgNVBAsM
CVRlc3Qgcm9vdDBZMBMGByqGSM49AgEGCCqGSM49AwEHA0IABF6oDgMg0LV6YhPj
QXaPXYCc2cIyCdqp0ROUksRz0pOLTc5iY2nraUheRUD1vRRneq7GeXOVNn7uXONg
oCGMjNwwCgYIKoZIzj0EAwIDRwAwRAIgDSiwgIn8g1lpruYH0QD1GYeoWVunfmrI
XzZZl0eW/ugCICgOfXeZ2GGy3wIC0352BaC3a8r5AAb2XSGNe+e9wNN6
-----END CERTIFICATE-----
`

const invalidCNWithoutSAN = `
Certificate:
    Data:
        Version: 1 (0x0)
        Serial Number:
            07:ba:bc:b7:d9:ab:0c:02:fe:50:1d:4e:15:a3:0d:e4:11:16:14:a2
        Signature Algorithm: ecdsa-with-SHA256
        Issuer: OU = Test root
        Validity
            Not Before: Jul 11 18:35:21 2018 GMT
            Not After : Jul  8 18:35:21 2028 GMT
        Subject: CN = "foo,invalid"
        Subject Public Key Info:
            Public Key Algorithm: id-ecPublicKey
                Public-Key: (256 bit)
                pub:
                    04:a7:a6:7c:22:33:a7:47:7f:08:93:2d:5f:61:35:
                    2e:da:45:67:76:f2:97:73:18:b0:01:12:4a:1a:d5:
                    b7:6f:41:3c:bb:05:69:f4:06:5d:ff:eb:2b:a7:85:
                    0b:4c:f7:45:4e:81:40:7a:a9:c6:1d:bb:ba:d9:b9:
                    26:b3:ca:50:90
                ASN1 OID: prime256v1
                NIST CURVE: P-256
    Signature Algorithm: ecdsa-with-SHA256
         30:45:02:21:00:85:96:75:b6:72:3c:67:12:a0:7f:86:04:81:
         d2:dd:c8:67:50:d7:5f:85:c0:54:54:fc:e6:6b:45:08:93:d3:
         2a:02:20:60:86:3e:d6:28:a6:4e:da:dd:6e:95:89:cc:00:76:
         78:1c:03:80:85:a6:5a:0b:eb:c5:f3:9c:2e:df:ef:6e:fa
-----BEGIN CERTIFICATE-----
MIIBJDCBywIUB7q8t9mrDAL+UB1OFaMN5BEWFKIwCgYIKoZIzj0EAwIwFDESMBAG
A1UECwwJVGVzdCByb290MB4XDTE4MDcxMTE4MzUyMVoXDTI4MDcwODE4MzUyMVow
FjEUMBIGA1UEAwwLZm9vLGludmFsaWQwWTATBgcqhkjOPQIBBggqhkjOPQMBBwNC
AASnpnwiM6dHfwiTLV9hNS7aRWd28pdzGLABEkoa1bdvQTy7BWn0Bl3/6yunhQtM
90VOgUB6qcYdu7rZuSazylCQMAoGCCqGSM49BAMCA0gAMEUCIQCFlnW2cjxnEqB/
hgSB0t3IZ1DXX4XAVFT85mtFCJPTKgIgYIY+1iimTtrdbpWJzAB2eBwDgIWmWgvr
xfOcLt/vbvo=
-----END CERTIFICATE-----
`

const validCNWithoutSAN = `
Certificate:
    Data:
        Version: 1 (0x0)
        Serial Number:
            07:ba:bc:b7:d9:ab:0c:02:fe:50:1d:4e:15:a3:0d:e4:11:16:14:a4
        Signature Algorithm: ecdsa-with-SHA256
        Issuer: OU = Test root
        Validity
            Not Before: Jul 11 18:47:24 2018 GMT
            Not After : Jul  8 18:47:24 2028 GMT
        Subject: CN = foo.example.com
        Subject Public Key Info:
            Public Key Algorithm: id-ecPublicKey
                Public-Key: (256 bit)
                pub:
                    04:a7:a6:7c:22:33:a7:47:7f:08:93:2d:5f:61:35:
                    2e:da:45:67:76:f2:97:73:18:b0:01:12:4a:1a:d5:
                    b7:6f:41:3c:bb:05:69:f4:06:5d:ff:eb:2b:a7:85:
                    0b:4c:f7:45:4e:81:40:7a:a9:c6:1d:bb:ba:d9:b9:
                    26:b3:ca:50:90
                ASN1 OID: prime256v1
                NIST CURVE: P-256
    Signature Algorithm: ecdsa-with-SHA256
         30:44:02:20:53:6c:d7:b7:59:61:51:72:a5:18:a3:4b:0d:52:
         ea:15:fa:d0:93:30:32:54:4b:ed:0f:58:85:b8:a8:1a:82:3b:
         02:20:14:77:4b:0e:7e:4f:0a:4f:64:26:97:dc:d0:ed:aa:67:
         1d:37:85:da:b4:87:ba:25:1c:2a:58:f7:23:11:8b:3d
-----BEGIN CERTIFICATE-----
MIIBJzCBzwIUB7q8t9mrDAL+UB1OFaMN5BEWFKQwCgYIKoZIzj0EAwIwFDESMBAG
A1UECwwJVGVzdCByb290MB4XDTE4MDcxMTE4NDcyNFoXDTI4MDcwODE4NDcyNFow
GjEYMBYGA1UEAwwPZm9vLmV4YW1wbGUuY29tMFkwEwYHKoZIzj0CAQYIKoZIzj0D
AQcDQgAEp6Z8IjOnR38Iky1fYTUu2kVndvKXcxiwARJKGtW3b0E8uwVp9AZd/+sr
p4ULTPdFToFAeqnGHbu62bkms8pQkDAKBggqhkjOPQQDAgNHADBEAiBTbNe3WWFR
cqUYo0sNUuoV+tCTMDJUS+0PWIW4qBqCOwIgFHdLDn5PCk9kJpfc0O2qZx03hdq0
h7olHCpY9yMRiz0=
-----END CERTIFICATE-----
`

const (
	rootWithoutSKID = `
Certificate:
    Data:
        Version: 3 (0x2)
        Serial Number:
            78:29:2a:dc:2f:12:39:7f:c9:33:93:ea:61:39:7d:70
        Signature Algorithm: ecdsa-with-SHA256
        Issuer: O = Acme Co
        Validity
            Not Before: Feb  4 22:56:34 2019 GMT
            Not After : Feb  1 22:56:34 2029 GMT
        Subject: O = Acme Co
        Subject Public Key Info:
            Public Key Algorithm: id-ecPublicKey
                Public-Key: (256 bit)
                pub:
                    04:84:a6:8c:69:53:af:87:4b:39:64:fe:04:24:e6:
                    d8:fc:d6:46:39:35:0e:92:dc:48:08:7e:02:5f:1e:
                    07:53:5c:d9:e0:56:c5:82:07:f6:a3:e2:ad:f6:ad:
                    be:a0:4e:03:87:39:67:0c:9c:46:91:68:6b:0e:8e:
                    f8:49:97:9d:5b
                ASN1 OID: prime256v1
                NIST CURVE: P-256
        X509v3 extensions:
            X509v3 Key Usage: critical
                Digital Signature, Key Encipherment, Certificate Sign
            X509v3 Extended Key Usage:
                TLS Web Server Authentication
            X509v3 Basic Constraints: critical
                CA:TRUE
            X509v3 Subject Alternative Name:
                DNS:example
    Signature Algorithm: ecdsa-with-SHA256
         30:46:02:21:00:c6:81:61:61:42:8d:37:e7:d0:c3:72:43:44:
         17:bd:84:ff:88:81:68:9a:99:08:ab:3c:3a:c0:1e:ea:8c:ba:
         c0:02:21:00:de:c9:fa:e5:5e:c6:e2:db:23:64:43:a9:37:42:
         72:92:7f:6e:89:38:ea:9e:2a:a7:fd:2f:ea:9a:ff:20:21:e7
-----BEGIN CERTIFICATE-----
MIIBbzCCARSgAwIBAgIQeCkq3C8SOX/JM5PqYTl9cDAKBggqhkjOPQQDAjASMRAw
DgYDVQQKEwdBY21lIENvMB4XDTE5MDIwNDIyNTYzNFoXDTI5MDIwMTIyNTYzNFow
EjEQMA4GA1UEChMHQWNtZSBDbzBZMBMGByqGSM49AgEGCCqGSM49AwEHA0IABISm
jGlTr4dLOWT+BCTm2PzWRjk1DpLcSAh+Al8eB1Nc2eBWxYIH9qPirfatvqBOA4c5
ZwycRpFoaw6O+EmXnVujTDBKMA4GA1UdDwEB/wQEAwICpDATBgNVHSUEDDAKBggr
BgEFBQcDATAPBgNVHRMBAf8EBTADAQH/MBIGA1UdEQQLMAmCB2V4YW1wbGUwCgYI
KoZIzj0EAwIDSQAwRgIhAMaBYWFCjTfn0MNyQ0QXvYT/iIFompkIqzw6wB7qjLrA
AiEA3sn65V7G4tsjZEOpN0Jykn9uiTjqniqn/S/qmv8gIec=
-----END CERTIFICATE-----
`
	leafWithAKID = `
	Certificate:
    Data:
        Version: 3 (0x2)
        Serial Number:
            f0:8a:62:f0:03:84:a2:cf:69:63:ad:71:3b:b6:5d:8c
        Signature Algorithm: ecdsa-with-SHA256
        Issuer: O = Acme Co
        Validity
            Not Before: Feb  4 23:06:52 2019 GMT
            Not After : Feb  1 23:06:52 2029 GMT
        Subject: O = Acme LLC
        Subject Public Key Info:
            Public Key Algorithm: id-ecPublicKey
                Public-Key: (256 bit)
                pub:
                    04:5a:4e:4d:fb:ff:17:f7:b6:13:e8:29:45:34:81:
                    39:ff:8c:9c:d9:8c:0a:9f:dd:b5:97:4c:2b:20:91:
                    1c:4f:6b:be:53:27:66:ec:4a:ad:08:93:6d:66:36:
                    0c:02:70:5d:01:ca:7f:c3:29:e9:4f:00:ba:b4:14:
                    ec:c5:c3:34:b3
                ASN1 OID: prime256v1
                NIST CURVE: P-256
        X509v3 extensions:
            X509v3 Key Usage: critical
                Digital Signature, Key Encipherment
            X509v3 Extended Key Usage:
                TLS Web Server Authentication
            X509v3 Basic Constraints: critical
                CA:FALSE
            X509v3 Authority Key Identifier:
                keyid:C2:2B:5F:91:78:34:26:09:42:8D:6F:51:B2:C5:AF:4C:0B:DE:6A:42

            X509v3 Subject Alternative Name:
                DNS:example
    Signature Algorithm: ecdsa-with-SHA256
         30:44:02:20:64:e0:ba:56:89:63:ce:22:5e:4f:22:15:fd:3c:
         35:64:9a:3a:6b:7b:9a:32:a0:7f:f7:69:8c:06:f0:00:58:b8:
         02:20:09:e4:9f:6d:8b:9e:38:e1:b6:01:d5:ee:32:a4:94:65:
         93:2a:78:94:bb:26:57:4b:c7:dd:6c:3d:40:2b:63:90
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
`
)

var unknownAuthorityErrorTests = []struct {
	cert     string
	expected string
}{
	{selfSignedWithCommonName, "x509: certificate signed by unknown authority (possibly because of \"empty\" while trying to verify candidate authority certificate \"test\")"},
	{selfSignedNoCommonNameWithOrgName, "x509: certificate signed by unknown authority (possibly because of \"empty\" while trying to verify candidate authority certificate \"ca\")"},
	{selfSignedNoCommonNameNoOrgName, "x509: certificate signed by unknown authority (possibly because of \"empty\" while trying to verify candidate authority certificate \"serial:0\")"},
}

func TestUnknownAuthorityError(t *testing.T) {
	for i, tt := range unknownAuthorityErrorTests {
		der, _ := pem.Decode([]byte(tt.cert))
		if der == nil {
			t.Errorf("#%d: Unable to decode PEM block", i)
		}
		c, err := ParseCertificate(der.Bytes)
		if err != nil {
			t.Errorf("#%d: Unable to parse certificate -> %v", i, err)
		}
		uae := &UnknownAuthorityError{
			Cert:     c,
			hintErr:  fmt.Errorf("empty"),
			hintCert: c,
		}
		actual := uae.Error()
		if actual != tt.expected {
			t.Errorf("#%d: UnknownAuthorityError.Error() response invalid actual: %s expected: %s", i, actual, tt.expected)
		}
	}
}

var nameConstraintTests = []struct {
	constraint, domain string
	expectError        bool
	shouldMatch        bool
}{
	{"", "anything.com", false, true},
	{"example.com", "example.com", false, true},
	{"example.com.", "example.com", true, false},
	{"example.com", "example.com.", true, false},
	{"example.com", "ExAmPle.coM", false, true},
	{"example.com", "exampl1.com", false, false},
	{"example.com", "www.ExAmPle.coM", false, true},
	{"example.com", "sub.www.ExAmPle.coM", false, true},
	{"example.com", "notexample.com", false, false},
	{".example.com", "example.com", false, false},
	{".example.com", "www.example.com", false, true},
	{".example.com", "www..example.com", true, false},
}

func TestNameConstraints(t *testing.T) {
	for i, test := range nameConstraintTests {
		result, err := matchDomainConstraint(test.domain, test.constraint)

		if err != nil && !test.expectError {
			t.Errorf("unexpected error for test #%d: domain=%s, constraint=%s, err=%s", i, test.domain, test.constraint, err)
			continue
		}

		if err == nil && test.expectError {
			t.Errorf("unexpected success for test #%d: domain=%s, constraint=%s", i, test.domain, test.constraint)
			continue
		}

		if result != test.shouldMatch {
			t.Errorf("unexpected result for test #%d: domain=%s, constraint=%s, result=%t", i, test.domain, test.constraint, result)
		}
	}
}

const selfSignedWithCommonName = `-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----`
const selfSignedNoCommonNameWithOrgName = `-----BEGIN CERTIFICATE-----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=
-----END CERTIFICATE-----`
const selfSignedNoCommonNameNoOrgName = `-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----`

const criticalExtRoot = `-----BEGIN CERTIFICATE-----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=
-----END CERTIFICATE-----`

const criticalExtIntermediate = `-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----`

const criticalExtLeafWithExt = `-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----`

const criticalExtIntermediateWithExt = `-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----`

const criticalExtLeaf = `-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----`

func TestValidHostname(t *testing.T) {
	tests := []struct {
		host string
		want bool
	}{
		{"example.com", true},
		{"eXample123-.com", true},
		{"-eXample123-.com", false},
		{"", false},
		{".", false},
		{"example..com", false},
		{".example.com", false},
		{"*.example.com", true},
		{"*foo.example.com", false},
		{"foo.*.example.com", false},
		{"exa_mple.com", true},
		{"foo,bar", false},
		{"project-dev:us-central1:main", true},
	}
	for _, tt := range tests {
		if got := validHostname(tt.host); got != tt.want {
			t.Errorf("validHostname(%q) = %v, want %v", tt.host, got, tt.want)
		}
	}
}

func generateCert(cn string, isCA bool, issuer *Certificate, issuerKey crypto.PrivateKey) (*Certificate, crypto.PrivateKey, error) {
	priv, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
	if err != nil {
		return nil, nil, err
	}

	serialNumberLimit := new(big.Int).Lsh(big.NewInt(1), 128)
	serialNumber, _ := rand.Int(rand.Reader, serialNumberLimit)

	template := &Certificate{
		SerialNumber: serialNumber,
		Subject:      pkix.Name{CommonName: cn},
		NotBefore:    time.Now().Add(-1 * time.Hour),
		NotAfter:     time.Now().Add(24 * time.Hour),

		KeyUsage:              KeyUsageKeyEncipherment | KeyUsageDigitalSignature | KeyUsageCertSign,
		ExtKeyUsage:           []ExtKeyUsage{ExtKeyUsageServerAuth},
		BasicConstraintsValid: true,
		IsCA:                  isCA,
	}
	if issuer == nil {
		issuer = template
		issuerKey = priv
	}

	derBytes, err := CreateCertificate(rand.Reader, template, issuer, priv.Public(), issuerKey)
	if err != nil {
		return nil, nil, err
	}
	cert, err := ParseCertificate(derBytes)
	if err != nil {
		return nil, nil, err
	}

	return cert, priv, nil
}

func TestPathologicalChain(t *testing.T) {
	if testing.Short() {
		t.Skip("skipping generation of a long chain of certificates in short mode")
	}

	// Build a chain where all intermediates share the same subject, to hit the
	// path building worst behavior.
	roots, intermediates := NewCertPool(), NewCertPool()

	parent, parentKey, err := generateCert("Root CA", true, nil, nil)
	if err != nil {
		t.Fatal(err)
	}
	roots.AddCert(parent)

	for i := 1; i < 100; i++ {
		parent, parentKey, err = generateCert("Intermediate CA", true, parent, parentKey)
		if err != nil {
			t.Fatal(err)
		}
		intermediates.AddCert(parent)
	}

	leaf, _, err := generateCert("Leaf", false, parent, parentKey)
	if err != nil {
		t.Fatal(err)
	}

	start := time.Now()
	_, err = leaf.Verify(VerifyOptions{
		Roots:         roots,
		Intermediates: intermediates,
	})
	t.Logf("verification took %v", time.Since(start))

	if err == nil || !strings.Contains(err.Error(), "signature check attempts limit") {
		t.Errorf("expected verification to fail with a signature checks limit error; got %v", err)
	}
}

func TestLongChain(t *testing.T) {
	if testing.Short() {
		t.Skip("skipping generation of a long chain of certificates in short mode")
	}

	roots, intermediates := NewCertPool(), NewCertPool()

	parent, parentKey, err := generateCert("Root CA", true, nil, nil)
	if err != nil {
		t.Fatal(err)
	}
	roots.AddCert(parent)

	for i := 1; i < 15; i++ {
		name := fmt.Sprintf("Intermediate CA #%d", i)
		parent, parentKey, err = generateCert(name, true, parent, parentKey)
		if err != nil {
			t.Fatal(err)
		}
		intermediates.AddCert(parent)
	}

	leaf, _, err := generateCert("Leaf", false, parent, parentKey)
	if err != nil {
		t.Fatal(err)
	}

	start := time.Now()
	if _, err := leaf.Verify(VerifyOptions{
		Roots:         roots,
		Intermediates: intermediates,
	}); err != nil {
		t.Error(err)
	}
	t.Logf("verification took %v", time.Since(start))
}