fix: all hange s\/github.com\/ponzu-cms/github.com\/haturatu\/g

11 files changed, 0 insertions, 2984 deletions

diff --git a/cmd/ponzu/vendor/golang.org/x/crypto/autocert/autocert.go b/cmd/ponzu/vendor/golang.org/x/crypto/autocert/autocert.go
deleted file mode 100644
index 453e722..0000000
--- a/cmd/ponzu/vendor/golang.org/x/crypto/autocert/autocert.go
+++ /dev/null
@@ -1,973 +0,0 @@
-// Copyright 2016 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 autocert provides automatic access to certificates from Let's Encrypt
-// and any other ACME-based CA.
-//
-// This package is a work in progress and makes no API stability promises.
-package autocert
-
-import (
-	"bytes"
-	"context"
-	"crypto"
-	"crypto/ecdsa"
-	"crypto/elliptic"
-	"crypto/rand"
-	"crypto/rsa"
-	"crypto/tls"
-	"crypto/x509"
-	"crypto/x509/pkix"
-	"encoding/pem"
-	"errors"
-	"fmt"
-	"io"
-	mathrand "math/rand"
-	"net"
-	"net/http"
-	"path"
-	"strconv"
-	"strings"
-	"sync"
-	"time"
-
-	"golang.org/x/crypto/acme"
-)
-
-// createCertRetryAfter is how much time to wait before removing a failed state
-// entry due to an unsuccessful createCert call.
-// This is a variable instead of a const for testing.
-// TODO: Consider making it configurable or an exp backoff?
-var createCertRetryAfter = time.Minute
-
-// pseudoRand is safe for concurrent use.
-var pseudoRand *lockedMathRand
-
-func init() {
-	src := mathrand.NewSource(timeNow().UnixNano())
-	pseudoRand = &lockedMathRand{rnd: mathrand.New(src)}
-}
-
-// AcceptTOS is a Manager.Prompt function that always returns true to
-// indicate acceptance of the CA's Terms of Service during account
-// registration.
-func AcceptTOS(tosURL string) bool { return true }
-
-// HostPolicy specifies which host names the Manager is allowed to respond to.
-// It returns a non-nil error if the host should be rejected.
-// The returned error is accessible via tls.Conn.Handshake and its callers.
-// See Manager's HostPolicy field and GetCertificate method docs for more details.
-type HostPolicy func(ctx context.Context, host string) error
-
-// HostWhitelist returns a policy where only the specified host names are allowed.
-// Only exact matches are currently supported. Subdomains, regexp or wildcard
-// will not match.
-func HostWhitelist(hosts ...string) HostPolicy {
-	whitelist := make(map[string]bool, len(hosts))
-	for _, h := range hosts {
-		whitelist[h] = true
-	}
-	return func(_ context.Context, host string) error {
-		if !whitelist[host] {
-			return errors.New("acme/autocert: host not configured")
-		}
-		return nil
-	}
-}
-
-// defaultHostPolicy is used when Manager.HostPolicy is not set.
-func defaultHostPolicy(context.Context, string) error {
-	return nil
-}
-
-// Manager is a stateful certificate manager built on top of acme.Client.
-// It obtains and refreshes certificates automatically using "tls-sni-01",
-// "tls-sni-02" and "http-01" challenge types, as well as providing them
-// to a TLS server via tls.Config.
-//
-// You must specify a cache implementation, such as DirCache,
-// to reuse obtained certificates across program restarts.
-// Otherwise your server is very likely to exceed the certificate
-// issuer's request rate limits.
-type Manager struct {
-	// Prompt specifies a callback function to conditionally accept a CA's Terms of Service (TOS).
-	// The registration may require the caller to agree to the CA's TOS.
-	// If so, Manager calls Prompt with a TOS URL provided by the CA. Prompt should report
-	// whether the caller agrees to the terms.
-	//
-	// To always accept the terms, the callers can use AcceptTOS.
-	Prompt func(tosURL string) bool
-
-	// Cache optionally stores and retrieves previously-obtained certificates.
-	// If nil, certs will only be cached for the lifetime of the Manager.
-	//
-	// Manager passes the Cache certificates data encoded in PEM, with private/public
-	// parts combined in a single Cache.Put call, private key first.
-	Cache Cache
-
-	// HostPolicy controls which domains the Manager will attempt
-	// to retrieve new certificates for. It does not affect cached certs.
-	//
-	// If non-nil, HostPolicy is called before requesting a new cert.
-	// If nil, all hosts are currently allowed. This is not recommended,
-	// as it opens a potential attack where clients connect to a server
-	// by IP address and pretend to be asking for an incorrect host name.
-	// Manager will attempt to obtain a certificate for that host, incorrectly,
-	// eventually reaching the CA's rate limit for certificate requests
-	// and making it impossible to obtain actual certificates.
-	//
-	// See GetCertificate for more details.
-	HostPolicy HostPolicy
-
-	// RenewBefore optionally specifies how early certificates should
-	// be renewed before they expire.
-	//
-	// If zero, they're renewed 30 days before expiration.
-	RenewBefore time.Duration
-
-	// Client is used to perform low-level operations, such as account registration
-	// and requesting new certificates.
-	// If Client is nil, a zero-value acme.Client is used with acme.LetsEncryptURL
-	// directory endpoint and a newly-generated ECDSA P-256 key.
-	//
-	// Mutating the field after the first call of GetCertificate method will have no effect.
-	Client *acme.Client
-
-	// Email optionally specifies a contact email address.
-	// This is used by CAs, such as Let's Encrypt, to notify about problems
-	// with issued certificates.
-	//
-	// If the Client's account key is already registered, Email is not used.
-	Email string
-
-	// ForceRSA makes the Manager generate certificates with 2048-bit RSA keys.
-	//
-	// If false, a default is used. Currently the default
-	// is EC-based keys using the P-256 curve.
-	ForceRSA bool
-
-	clientMu sync.Mutex
-	client   *acme.Client // initialized by acmeClient method
-
-	stateMu sync.Mutex
-	state   map[string]*certState // keyed by domain name
-
-	// renewal tracks the set of domains currently running renewal timers.
-	// It is keyed by domain name.
-	renewalMu sync.Mutex
-	renewal   map[string]*domainRenewal
-
-	// tokensMu guards the rest of the fields: tryHTTP01, certTokens and httpTokens.
-	tokensMu sync.RWMutex
-	// tryHTTP01 indicates whether the Manager should try "http-01" challenge type
-	// during the authorization flow.
-	tryHTTP01 bool
-	// httpTokens contains response body values for http-01 challenges
-	// and is keyed by the URL path at which a challenge response is expected
-	// to be provisioned.
-	// The entries are stored for the duration of the authorization flow.
-	httpTokens map[string][]byte
-	// certTokens contains temporary certificates for tls-sni challenges
-	// and is keyed by token domain name, which matches server name of ClientHello.
-	// Keys always have ".acme.invalid" suffix.
-	// The entries are stored for the duration of the authorization flow.
-	certTokens map[string]*tls.Certificate
-}
-
-// GetCertificate implements the tls.Config.GetCertificate hook.
-// It provides a TLS certificate for hello.ServerName host, including answering
-// *.acme.invalid (TLS-SNI) challenges. All other fields of hello are ignored.
-//
-// If m.HostPolicy is non-nil, GetCertificate calls the policy before requesting
-// a new cert. A non-nil error returned from m.HostPolicy halts TLS negotiation.
-// The error is propagated back to the caller of GetCertificate and is user-visible.
-// This does not affect cached certs. See HostPolicy field description for more details.
-func (m *Manager) GetCertificate(hello *tls.ClientHelloInfo) (*tls.Certificate, error) {
-	if m.Prompt == nil {
-		return nil, errors.New("acme/autocert: Manager.Prompt not set")
-	}
-
-	name := hello.ServerName
-	if name == "" {
-		return nil, errors.New("acme/autocert: missing server name")
-	}
-	if !strings.Contains(strings.Trim(name, "."), ".") {
-		return nil, errors.New("acme/autocert: server name component count invalid")
-	}
-	if strings.ContainsAny(name, `/\`) {
-		return nil, errors.New("acme/autocert: server name contains invalid character")
-	}
-
-	// In the worst-case scenario, the timeout needs to account for caching, host policy,
-	// domain ownership verification and certificate issuance.
-	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Minute)
-	defer cancel()
-
-	// check whether this is a token cert requested for TLS-SNI challenge
-	if strings.HasSuffix(name, ".acme.invalid") {
-		m.tokensMu.RLock()
-		defer m.tokensMu.RUnlock()
-		if cert := m.certTokens[name]; cert != nil {
-			return cert, nil
-		}
-		if cert, err := m.cacheGet(ctx, name); err == nil {
-			return cert, nil
-		}
-		// TODO: cache error results?
-		return nil, fmt.Errorf("acme/autocert: no token cert for %q", name)
-	}
-
-	// regular domain
-	name = strings.TrimSuffix(name, ".") // golang.org/issue/18114
-	cert, err := m.cert(ctx, name)
-	if err == nil {
-		return cert, nil
-	}
-	if err != ErrCacheMiss {
-		return nil, err
-	}
-
-	// first-time
-	if err := m.hostPolicy()(ctx, name); err != nil {
-		return nil, err
-	}
-	cert, err = m.createCert(ctx, name)
-	if err != nil {
-		return nil, err
-	}
-	m.cachePut(ctx, name, cert)
-	return cert, nil
-}
-
-// HTTPHandler configures the Manager to provision ACME "http-01" challenge responses.
-// It returns an http.Handler that responds to the challenges and must be
-// running on port 80. If it receives a request that is not an ACME challenge,
-// it delegates the request to the optional fallback handler.
-//
-// If fallback is nil, the returned handler redirects all GET and HEAD requests
-// to the default TLS port 443 with 302 Found status code, preserving the original
-// request path and query. It responds with 400 Bad Request to all other HTTP methods.
-// The fallback is not protected by the optional HostPolicy.
-//
-// Because the fallback handler is run with unencrypted port 80 requests,
-// the fallback should not serve TLS-only requests.
-//
-// If HTTPHandler is never called, the Manager will only use TLS SNI
-// challenges for domain verification.
-func (m *Manager) HTTPHandler(fallback http.Handler) http.Handler {
-	m.tokensMu.Lock()
-	defer m.tokensMu.Unlock()
-	m.tryHTTP01 = true
-
-	if fallback == nil {
-		fallback = http.HandlerFunc(handleHTTPRedirect)
-	}
-	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		if !strings.HasPrefix(r.URL.Path, "/.well-known/acme-challenge/") {
-			fallback.ServeHTTP(w, r)
-			return
-		}
-		// A reasonable context timeout for cache and host policy only,
-		// because we don't wait for a new certificate issuance here.
-		ctx, cancel := context.WithTimeout(r.Context(), time.Minute)
-		defer cancel()
-		if err := m.hostPolicy()(ctx, r.Host); err != nil {
-			http.Error(w, err.Error(), http.StatusForbidden)
-			return
-		}
-		data, err := m.httpToken(ctx, r.URL.Path)
-		if err != nil {
-			http.Error(w, err.Error(), http.StatusNotFound)
-			return
-		}
-		w.Write(data)
-	})
-}
-
-func handleHTTPRedirect(w http.ResponseWriter, r *http.Request) {
-	if r.Method != "GET" && r.Method != "HEAD" {
-		http.Error(w, "Use HTTPS", http.StatusBadRequest)
-		return
-	}
-	target := "https://" + stripPort(r.Host) + r.URL.RequestURI()
-	http.Redirect(w, r, target, http.StatusFound)
-}
-
-func stripPort(hostport string) string {
-	host, _, err := net.SplitHostPort(hostport)
-	if err != nil {
-		return hostport
-	}
-	return net.JoinHostPort(host, "443")
-}
-
-// cert returns an existing certificate either from m.state or cache.
-// If a certificate is found in cache but not in m.state, the latter will be filled
-// with the cached value.
-func (m *Manager) cert(ctx context.Context, name string) (*tls.Certificate, error) {
-	m.stateMu.Lock()
-	if s, ok := m.state[name]; ok {
-		m.stateMu.Unlock()
-		s.RLock()
-		defer s.RUnlock()
-		return s.tlscert()
-	}
-	defer m.stateMu.Unlock()
-	cert, err := m.cacheGet(ctx, name)
-	if err != nil {
-		return nil, err
-	}
-	signer, ok := cert.PrivateKey.(crypto.Signer)
-	if !ok {
-		return nil, errors.New("acme/autocert: private key cannot sign")
-	}
-	if m.state == nil {
-		m.state = make(map[string]*certState)
-	}
-	s := &certState{
-		key:  signer,
-		cert: cert.Certificate,
-		leaf: cert.Leaf,
-	}
-	m.state[name] = s
-	go m.renew(name, s.key, s.leaf.NotAfter)
-	return cert, nil
-}
-
-// cacheGet always returns a valid certificate, or an error otherwise.
-// If a cached certficate exists but is not valid, ErrCacheMiss is returned.
-func (m *Manager) cacheGet(ctx context.Context, domain string) (*tls.Certificate, error) {
-	if m.Cache == nil {
-		return nil, ErrCacheMiss
-	}
-	data, err := m.Cache.Get(ctx, domain)
-	if err != nil {
-		return nil, err
-	}
-
-	// private
-	priv, pub := pem.Decode(data)
-	if priv == nil || !strings.Contains(priv.Type, "PRIVATE") {
-		return nil, ErrCacheMiss
-	}
-	privKey, err := parsePrivateKey(priv.Bytes)
-	if err != nil {
-		return nil, err
-	}
-
-	// public
-	var pubDER [][]byte
-	for len(pub) > 0 {
-		var b *pem.Block
-		b, pub = pem.Decode(pub)
-		if b == nil {
-			break
-		}
-		pubDER = append(pubDER, b.Bytes)
-	}
-	if len(pub) > 0 {
-		// Leftover content not consumed by pem.Decode. Corrupt. Ignore.
-		return nil, ErrCacheMiss
-	}
-
-	// verify and create TLS cert
-	leaf, err := validCert(domain, pubDER, privKey)
-	if err != nil {
-		return nil, ErrCacheMiss
-	}
-	tlscert := &tls.Certificate{
-		Certificate: pubDER,
-		PrivateKey:  privKey,
-		Leaf:        leaf,
-	}
-	return tlscert, nil
-}
-
-func (m *Manager) cachePut(ctx context.Context, domain string, tlscert *tls.Certificate) error {
-	if m.Cache == nil {
-		return nil
-	}
-
-	// contains PEM-encoded data
-	var buf bytes.Buffer
-
-	// private
-	switch key := tlscert.PrivateKey.(type) {
-	case *ecdsa.PrivateKey:
-		if err := encodeECDSAKey(&buf, key); err != nil {
-			return err
-		}
-	case *rsa.PrivateKey:
-		b := x509.MarshalPKCS1PrivateKey(key)
-		pb := &pem.Block{Type: "RSA PRIVATE KEY", Bytes: b}
-		if err := pem.Encode(&buf, pb); err != nil {
-			return err
-		}
-	default:
-		return errors.New("acme/autocert: unknown private key type")
-	}
-
-	// public
-	for _, b := range tlscert.Certificate {
-		pb := &pem.Block{Type: "CERTIFICATE", Bytes: b}
-		if err := pem.Encode(&buf, pb); err != nil {
-			return err
-		}
-	}
-
-	return m.Cache.Put(ctx, domain, buf.Bytes())
-}
-
-func encodeECDSAKey(w io.Writer, key *ecdsa.PrivateKey) error {
-	b, err := x509.MarshalECPrivateKey(key)
-	if err != nil {
-		return err
-	}
-	pb := &pem.Block{Type: "EC PRIVATE KEY", Bytes: b}
-	return pem.Encode(w, pb)
-}
-
-// createCert starts the domain ownership verification and returns a certificate
-// for that domain upon success.
-//
-// If the domain is already being verified, it waits for the existing verification to complete.
-// Either way, createCert blocks for the duration of the whole process.
-func (m *Manager) createCert(ctx context.Context, domain string) (*tls.Certificate, error) {
-	// TODO: maybe rewrite this whole piece using sync.Once
-	state, err := m.certState(domain)
-	if err != nil {
-		return nil, err
-	}
-	// state may exist if another goroutine is already working on it
-	// in which case just wait for it to finish
-	if !state.locked {
-		state.RLock()
-		defer state.RUnlock()
-		return state.tlscert()
-	}
-
-	// We are the first; state is locked.
-	// Unblock the readers when domain ownership is verified
-	// and we got the cert or the process failed.
-	defer state.Unlock()
-	state.locked = false
-
-	der, leaf, err := m.authorizedCert(ctx, state.key, domain)
-	if err != nil {
-		// Remove the failed state after some time,
-		// making the manager call createCert again on the following TLS hello.
-		time.AfterFunc(createCertRetryAfter, func() {
-			defer testDidRemoveState(domain)
-			m.stateMu.Lock()
-			defer m.stateMu.Unlock()
-			// Verify the state hasn't changed and it's still invalid
-			// before deleting.
-			s, ok := m.state[domain]
-			if !ok {
-				return
-			}
-			if _, err := validCert(domain, s.cert, s.key); err == nil {
-				return
-			}
-			delete(m.state, domain)
-		})
-		return nil, err
-	}
-	state.cert = der
-	state.leaf = leaf
-	go m.renew(domain, state.key, state.leaf.NotAfter)
-	return state.tlscert()
-}
-
-// certState returns a new or existing certState.
-// If a new certState is returned, state.exist is false and the state is locked.
-// The returned error is non-nil only in the case where a new state could not be created.
-func (m *Manager) certState(domain string) (*certState, error) {
-	m.stateMu.Lock()
-	defer m.stateMu.Unlock()
-	if m.state == nil {
-		m.state = make(map[string]*certState)
-	}
-	// existing state
-	if state, ok := m.state[domain]; ok {
-		return state, nil
-	}
-
-	// new locked state
-	var (
-		err error
-		key crypto.Signer
-	)
-	if m.ForceRSA {
-		key, err = rsa.GenerateKey(rand.Reader, 2048)
-	} else {
-		key, err = ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
-	}
-	if err != nil {
-		return nil, err
-	}
-
-	state := &certState{
-		key:    key,
-		locked: true,
-	}
-	state.Lock() // will be unlocked by m.certState caller
-	m.state[domain] = state
-	return state, nil
-}
-
-// authorizedCert starts the domain ownership verification process and requests a new cert upon success.
-// The key argument is the certificate private key.
-func (m *Manager) authorizedCert(ctx context.Context, key crypto.Signer, domain string) (der [][]byte, leaf *x509.Certificate, err error) {
-	client, err := m.acmeClient(ctx)
-	if err != nil {
-		return nil, nil, err
-	}
-
-	if err := m.verify(ctx, client, domain); err != nil {
-		return nil, nil, err
-	}
-	csr, err := certRequest(key, domain)
-	if err != nil {
-		return nil, nil, err
-	}
-	der, _, err = client.CreateCert(ctx, csr, 0, true)
-	if err != nil {
-		return nil, nil, err
-	}
-	leaf, err = validCert(domain, der, key)
-	if err != nil {
-		return nil, nil, err
-	}
-	return der, leaf, nil
-}
-
-// verify runs the identifier (domain) authorization flow
-// using each applicable ACME challenge type.
-func (m *Manager) verify(ctx context.Context, client *acme.Client, domain string) error {
-	// The list of challenge types we'll try to fulfill
-	// in this specific order.
-	challengeTypes := []string{"tls-sni-02", "tls-sni-01"}
-	m.tokensMu.RLock()
-	if m.tryHTTP01 {
-		challengeTypes = append(challengeTypes, "http-01")
-	}
-	m.tokensMu.RUnlock()
-
-	var nextTyp int // challengeType index of the next challenge type to try
-	for {
-		// Start domain authorization and get the challenge.
-		authz, err := client.Authorize(ctx, domain)
-		if err != nil {
-			return err
-		}
-		// No point in accepting challenges if the authorization status
-		// is in a final state.
-		switch authz.Status {
-		case acme.StatusValid:
-			return nil // already authorized
-		case acme.StatusInvalid:
-			return fmt.Errorf("acme/autocert: invalid authorization %q", authz.URI)
-		}
-
-		// Pick the next preferred challenge.
-		var chal *acme.Challenge
-		for chal == nil && nextTyp < len(challengeTypes) {
-			chal = pickChallenge(challengeTypes[nextTyp], authz.Challenges)
-			nextTyp++
-		}
-		if chal == nil {
-			return fmt.Errorf("acme/autocert: unable to authorize %q; tried %q", domain, challengeTypes)
-		}
-		cleanup, err := m.fulfill(ctx, client, chal)
-		if err != nil {
-			continue
-		}
-		defer cleanup()
-		if _, err := client.Accept(ctx, chal); err != nil {
-			continue
-		}
-
-		// A challenge is fulfilled and accepted: wait for the CA to validate.
-		if _, err := client.WaitAuthorization(ctx, authz.URI); err == nil {
-			return nil
-		}
-	}
-}
-
-// fulfill provisions a response to the challenge chal.
-// The cleanup is non-nil only if provisioning succeeded.
-func (m *Manager) fulfill(ctx context.Context, client *acme.Client, chal *acme.Challenge) (cleanup func(), err error) {
-	switch chal.Type {
-	case "tls-sni-01":
-		cert, name, err := client.TLSSNI01ChallengeCert(chal.Token)
-		if err != nil {
-			return nil, err
-		}
-		m.putCertToken(ctx, name, &cert)
-		return func() { go m.deleteCertToken(name) }, nil
-	case "tls-sni-02":
-		cert, name, err := client.TLSSNI02ChallengeCert(chal.Token)
-		if err != nil {
-			return nil, err
-		}
-		m.putCertToken(ctx, name, &cert)
-		return func() { go m.deleteCertToken(name) }, nil
-	case "http-01":
-		resp, err := client.HTTP01ChallengeResponse(chal.Token)
-		if err != nil {
-			return nil, err
-		}
-		p := client.HTTP01ChallengePath(chal.Token)
-		m.putHTTPToken(ctx, p, resp)
-		return func() { go m.deleteHTTPToken(p) }, nil
-	}
-	return nil, fmt.Errorf("acme/autocert: unknown challenge type %q", chal.Type)
-}
-
-func pickChallenge(typ string, chal []*acme.Challenge) *acme.Challenge {
-	for _, c := range chal {
-		if c.Type == typ {
-			return c
-		}
-	}
-	return nil
-}
-
-// putCertToken stores the cert under the named key in both m.certTokens map
-// and m.Cache.
-func (m *Manager) putCertToken(ctx context.Context, name string, cert *tls.Certificate) {
-	m.tokensMu.Lock()
-	defer m.tokensMu.Unlock()
-	if m.certTokens == nil {
-		m.certTokens = make(map[string]*tls.Certificate)
-	}
-	m.certTokens[name] = cert
-	m.cachePut(ctx, name, cert)
-}
-
-// deleteCertToken removes the token certificate for the specified domain name
-// from both m.certTokens map and m.Cache.
-func (m *Manager) deleteCertToken(name string) {
-	m.tokensMu.Lock()
-	defer m.tokensMu.Unlock()
-	delete(m.certTokens, name)
-	if m.Cache != nil {
-		m.Cache.Delete(context.Background(), name)
-	}
-}
-
-// httpToken retrieves an existing http-01 token value from an in-memory map
-// or the optional cache.
-func (m *Manager) httpToken(ctx context.Context, tokenPath string) ([]byte, error) {
-	m.tokensMu.RLock()
-	defer m.tokensMu.RUnlock()
-	if v, ok := m.httpTokens[tokenPath]; ok {
-		return v, nil
-	}
-	if m.Cache == nil {
-		return nil, fmt.Errorf("acme/autocert: no token at %q", tokenPath)
-	}
-	return m.Cache.Get(ctx, httpTokenCacheKey(tokenPath))
-}
-
-// putHTTPToken stores an http-01 token value using tokenPath as key
-// in both in-memory map and the optional Cache.
-//
-// It ignores any error returned from Cache.Put.
-func (m *Manager) putHTTPToken(ctx context.Context, tokenPath, val string) {
-	m.tokensMu.Lock()
-	defer m.tokensMu.Unlock()
-	if m.httpTokens == nil {
-		m.httpTokens = make(map[string][]byte)
-	}
-	b := []byte(val)
-	m.httpTokens[tokenPath] = b
-	if m.Cache != nil {
-		m.Cache.Put(ctx, httpTokenCacheKey(tokenPath), b)
-	}
-}
-
-// deleteHTTPToken removes an http-01 token value from both in-memory map
-// and the optional Cache, ignoring any error returned from the latter.
-//
-// If m.Cache is non-nil, it blocks until Cache.Delete returns without a timeout.
-func (m *Manager) deleteHTTPToken(tokenPath string) {
-	m.tokensMu.Lock()
-	defer m.tokensMu.Unlock()
-	delete(m.httpTokens, tokenPath)
-	if m.Cache != nil {
-		m.Cache.Delete(context.Background(), httpTokenCacheKey(tokenPath))
-	}
-}
-
-// httpTokenCacheKey returns a key at which an http-01 token value may be stored
-// in the Manager's optional Cache.
-func httpTokenCacheKey(tokenPath string) string {
-	return "http-01-" + path.Base(tokenPath)
-}
-
-// renew starts a cert renewal timer loop, one per domain.
-//
-// The loop is scheduled in two cases:
-// - a cert was fetched from cache for the first time (wasn't in m.state)
-// - a new cert was created by m.createCert
-//
-// The key argument is a certificate private key.
-// The exp argument is the cert expiration time (NotAfter).
-func (m *Manager) renew(domain string, key crypto.Signer, exp time.Time) {
-	m.renewalMu.Lock()
-	defer m.renewalMu.Unlock()
-	if m.renewal[domain] != nil {
-		// another goroutine is already on it
-		return
-	}
-	if m.renewal == nil {
-		m.renewal = make(map[string]*domainRenewal)
-	}
-	dr := &domainRenewal{m: m, domain: domain, key: key}
-	m.renewal[domain] = dr
-	dr.start(exp)
-}
-
-// stopRenew stops all currently running cert renewal timers.
-// The timers are not restarted during the lifetime of the Manager.
-func (m *Manager) stopRenew() {
-	m.renewalMu.Lock()
-	defer m.renewalMu.Unlock()
-	for name, dr := range m.renewal {
-		delete(m.renewal, name)
-		dr.stop()
-	}
-}
-
-func (m *Manager) accountKey(ctx context.Context) (crypto.Signer, error) {
-	const keyName = "acme_account.key"
-
-	genKey := func() (*ecdsa.PrivateKey, error) {
-		return ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
-	}
-
-	if m.Cache == nil {
-		return genKey()
-	}
-
-	data, err := m.Cache.Get(ctx, keyName)
-	if err == ErrCacheMiss {
-		key, err := genKey()
-		if err != nil {
-			return nil, err
-		}
-		var buf bytes.Buffer
-		if err := encodeECDSAKey(&buf, key); err != nil {
-			return nil, err
-		}
-		if err := m.Cache.Put(ctx, keyName, buf.Bytes()); err != nil {
-			return nil, err
-		}
-		return key, nil
-	}
-	if err != nil {
-		return nil, err
-	}
-
-	priv, _ := pem.Decode(data)
-	if priv == nil || !strings.Contains(priv.Type, "PRIVATE") {
-		return nil, errors.New("acme/autocert: invalid account key found in cache")
-	}
-	return parsePrivateKey(priv.Bytes)
-}
-
-func (m *Manager) acmeClient(ctx context.Context) (*acme.Client, error) {
-	m.clientMu.Lock()
-	defer m.clientMu.Unlock()
-	if m.client != nil {
-		return m.client, nil
-	}
-
-	client := m.Client
-	if client == nil {
-		client = &acme.Client{DirectoryURL: acme.LetsEncryptURL}
-	}
-	if client.Key == nil {
-		var err error
-		client.Key, err = m.accountKey(ctx)
-		if err != nil {
-			return nil, err
-		}
-	}
-	var contact []string
-	if m.Email != "" {
-		contact = []string{"mailto:" + m.Email}
-	}
-	a := &acme.Account{Contact: contact}
-	_, err := client.Register(ctx, a, m.Prompt)
-	if ae, ok := err.(*acme.Error); err == nil || ok && ae.StatusCode == http.StatusConflict {
-		// conflict indicates the key is already registered
-		m.client = client
-		err = nil
-	}
-	return m.client, err
-}
-
-func (m *Manager) hostPolicy() HostPolicy {
-	if m.HostPolicy != nil {
-		return m.HostPolicy
-	}
-	return defaultHostPolicy
-}
-
-func (m *Manager) renewBefore() time.Duration {
-	if m.RenewBefore > renewJitter {
-		return m.RenewBefore
-	}
-	return 720 * time.Hour // 30 days
-}
-
-// certState is ready when its mutex is unlocked for reading.
-type certState struct {
-	sync.RWMutex
-	locked bool              // locked for read/write
-	key    crypto.Signer     // private key for cert
-	cert   [][]byte          // DER encoding
-	leaf   *x509.Certificate // parsed cert[0]; always non-nil if cert != nil
-}
-
-// tlscert creates a tls.Certificate from s.key and s.cert.
-// Callers should wrap it in s.RLock() and s.RUnlock().
-func (s *certState) tlscert() (*tls.Certificate, error) {
-	if s.key == nil {
-		return nil, errors.New("acme/autocert: missing signer")
-	}
-	if len(s.cert) == 0 {
-		return nil, errors.New("acme/autocert: missing certificate")
-	}
-	return &tls.Certificate{
-		PrivateKey:  s.key,
-		Certificate: s.cert,
-		Leaf:        s.leaf,
-	}, nil
-}
-
-// certRequest creates a certificate request for the given common name cn
-// and optional SANs.
-func certRequest(key crypto.Signer, cn string, san ...string) ([]byte, error) {
-	req := &x509.CertificateRequest{
-		Subject:  pkix.Name{CommonName: cn},
-		DNSNames: san,
-	}
-	return x509.CreateCertificateRequest(rand.Reader, req, key)
-}
-
-// Attempt to parse the given private key DER block. OpenSSL 0.9.8 generates
-// PKCS#1 private keys by default, while OpenSSL 1.0.0 generates PKCS#8 keys.
-// OpenSSL ecparam generates SEC1 EC private keys for ECDSA. We try all three.
-//
-// Inspired by parsePrivateKey in crypto/tls/tls.go.
-func parsePrivateKey(der []byte) (crypto.Signer, error) {
-	if key, err := x509.ParsePKCS1PrivateKey(der); err == nil {
-		return key, nil
-	}
-	if key, err := x509.ParsePKCS8PrivateKey(der); err == nil {
-		switch key := key.(type) {
-		case *rsa.PrivateKey:
-			return key, nil
-		case *ecdsa.PrivateKey:
-			return key, nil
-		default:
-			return nil, errors.New("acme/autocert: unknown private key type in PKCS#8 wrapping")
-		}
-	}
-	if key, err := x509.ParseECPrivateKey(der); err == nil {
-		return key, nil
-	}
-
-	return nil, errors.New("acme/autocert: failed to parse private key")
-}
-
-// validCert parses a cert chain provided as der argument and verifies the leaf, der[0],
-// corresponds to the private key, as well as the domain match and expiration dates.
-// It doesn't do any revocation checking.
-//
-// The returned value is the verified leaf cert.
-func validCert(domain string, der [][]byte, key crypto.Signer) (leaf *x509.Certificate, err error) {
-	// parse public part(s)
-	var n int
-	for _, b := range der {
-		n += len(b)
-	}
-	pub := make([]byte, n)
-	n = 0
-	for _, b := range der {
-		n += copy(pub[n:], b)
-	}
-	x509Cert, err := x509.ParseCertificates(pub)
-	if len(x509Cert) == 0 {
-		return nil, errors.New("acme/autocert: no public key found")
-	}
-	// verify the leaf is not expired and matches the domain name
-	leaf = x509Cert[0]
-	now := timeNow()
-	if now.Before(leaf.NotBefore) {
-		return nil, errors.New("acme/autocert: certificate is not valid yet")
-	}
-	if now.After(leaf.NotAfter) {
-		return nil, errors.New("acme/autocert: expired certificate")
-	}
-	if err := leaf.VerifyHostname(domain); err != nil {
-		return nil, err
-	}
-	// ensure the leaf corresponds to the private key
-	switch pub := leaf.PublicKey.(type) {
-	case *rsa.PublicKey:
-		prv, ok := key.(*rsa.PrivateKey)
-		if !ok {
-			return nil, errors.New("acme/autocert: private key type does not match public key type")
-		}
-		if pub.N.Cmp(prv.N) != 0 {
-			return nil, errors.New("acme/autocert: private key does not match public key")
-		}
-	case *ecdsa.PublicKey:
-		prv, ok := key.(*ecdsa.PrivateKey)
-		if !ok {
-			return nil, errors.New("acme/autocert: private key type does not match public key type")
-		}
-		if pub.X.Cmp(prv.X) != 0 || pub.Y.Cmp(prv.Y) != 0 {
-			return nil, errors.New("acme/autocert: private key does not match public key")
-		}
-	default:
-		return nil, errors.New("acme/autocert: unknown public key algorithm")
-	}
-	return leaf, nil
-}
-
-func retryAfter(v string) time.Duration {
-	if i, err := strconv.Atoi(v); err == nil {
-		return time.Duration(i) * time.Second
-	}
-	if t, err := http.ParseTime(v); err == nil {
-		return t.Sub(timeNow())
-	}
-	return time.Second
-}
-
-type lockedMathRand struct {
-	sync.Mutex
-	rnd *mathrand.Rand
-}
-
-func (r *lockedMathRand) int63n(max int64) int64 {
-	r.Lock()
-	n := r.rnd.Int63n(max)
-	r.Unlock()
-	return n
-}
-
-// For easier testing.
-var (
-	timeNow = time.Now
-
-	// Called when a state is removed.
-	testDidRemoveState = func(domain string) {}
-)
diff --git a/cmd/ponzu/vendor/golang.org/x/crypto/autocert/autocert_test.go b/cmd/ponzu/vendor/golang.org/x/crypto/autocert/autocert_test.go
deleted file mode 100644
index 2da1912..0000000
--- a/cmd/ponzu/vendor/golang.org/x/crypto/autocert/autocert_test.go
+++ /dev/null
@@ -1,757 +0,0 @@
-// Copyright 2016 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 autocert
-
-import (
-	"context"
-	"crypto"
-	"crypto/ecdsa"
-	"crypto/elliptic"
-	"crypto/rand"
-	"crypto/rsa"
-	"crypto/tls"
-	"crypto/x509"
-	"crypto/x509/pkix"
-	"encoding/base64"
-	"encoding/json"
-	"fmt"
-	"html/template"
-	"io"
-	"math/big"
-	"net/http"
-	"net/http/httptest"
-	"reflect"
-	"strings"
-	"sync"
-	"testing"
-	"time"
-
-	"golang.org/x/crypto/acme"
-)
-
-var discoTmpl = template.Must(template.New("disco").Parse(`{
-	"new-reg": "{{.}}/new-reg",
-	"new-authz": "{{.}}/new-authz",
-	"new-cert": "{{.}}/new-cert"
-}`))
-
-var authzTmpl = template.Must(template.New("authz").Parse(`{
-	"status": "pending",
-	"challenges": [
-		{
-			"uri": "{{.}}/challenge/1",
-			"type": "tls-sni-01",
-			"token": "token-01"
-		},
-		{
-			"uri": "{{.}}/challenge/2",
-			"type": "tls-sni-02",
-			"token": "token-02"
-		},
-		{
-			"uri": "{{.}}/challenge/dns-01",
-			"type": "dns-01",
-			"token": "token-dns-01"
-		},
-		{
-			"uri": "{{.}}/challenge/http-01",
-			"type": "http-01",
-			"token": "token-http-01"
-		}
-	]
-}`))
-
-type memCache struct {
-	mu      sync.Mutex
-	keyData map[string][]byte
-}
-
-func (m *memCache) Get(ctx context.Context, key string) ([]byte, error) {
-	m.mu.Lock()
-	defer m.mu.Unlock()
-
-	v, ok := m.keyData[key]
-	if !ok {
-		return nil, ErrCacheMiss
-	}
-	return v, nil
-}
-
-func (m *memCache) Put(ctx context.Context, key string, data []byte) error {
-	m.mu.Lock()
-	defer m.mu.Unlock()
-
-	m.keyData[key] = data
-	return nil
-}
-
-func (m *memCache) Delete(ctx context.Context, key string) error {
-	m.mu.Lock()
-	defer m.mu.Unlock()
-
-	delete(m.keyData, key)
-	return nil
-}
-
-func newMemCache() *memCache {
-	return &memCache{
-		keyData: make(map[string][]byte),
-	}
-}
-
-func dummyCert(pub interface{}, san ...string) ([]byte, error) {
-	return dateDummyCert(pub, time.Now(), time.Now().Add(90*24*time.Hour), san...)
-}
-
-func dateDummyCert(pub interface{}, start, end time.Time, san ...string) ([]byte, error) {
-	// use EC key to run faster on 386
-	key, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
-	if err != nil {
-		return nil, err
-	}
-	t := &x509.Certificate{
-		SerialNumber:          big.NewInt(1),
-		NotBefore:             start,
-		NotAfter:              end,
-		BasicConstraintsValid: true,
-		KeyUsage:              x509.KeyUsageKeyEncipherment,
-		DNSNames:              san,
-	}
-	if pub == nil {
-		pub = &key.PublicKey
-	}
-	return x509.CreateCertificate(rand.Reader, t, t, pub, key)
-}
-
-func decodePayload(v interface{}, r io.Reader) error {
-	var req struct{ Payload string }
-	if err := json.NewDecoder(r).Decode(&req); err != nil {
-		return err
-	}
-	payload, err := base64.RawURLEncoding.DecodeString(req.Payload)
-	if err != nil {
-		return err
-	}
-	return json.Unmarshal(payload, v)
-}
-
-func TestGetCertificate(t *testing.T) {
-	man := &Manager{Prompt: AcceptTOS}
-	defer man.stopRenew()
-	hello := &tls.ClientHelloInfo{ServerName: "example.org"}
-	testGetCertificate(t, man, "example.org", hello)
-}
-
-func TestGetCertificate_trailingDot(t *testing.T) {
-	man := &Manager{Prompt: AcceptTOS}
-	defer man.stopRenew()
-	hello := &tls.ClientHelloInfo{ServerName: "example.org."}
-	testGetCertificate(t, man, "example.org", hello)
-}
-
-func TestGetCertificate_ForceRSA(t *testing.T) {
-	man := &Manager{
-		Prompt:   AcceptTOS,
-		Cache:    newMemCache(),
-		ForceRSA: true,
-	}
-	defer man.stopRenew()
-	hello := &tls.ClientHelloInfo{ServerName: "example.org"}
-	testGetCertificate(t, man, "example.org", hello)
-
-	cert, err := man.cacheGet(context.Background(), "example.org")
-	if err != nil {
-		t.Fatalf("man.cacheGet: %v", err)
-	}
-	if _, ok := cert.PrivateKey.(*rsa.PrivateKey); !ok {
-		t.Errorf("cert.PrivateKey is %T; want *rsa.PrivateKey", cert.PrivateKey)
-	}
-}
-
-func TestGetCertificate_nilPrompt(t *testing.T) {
-	man := &Manager{}
-	defer man.stopRenew()
-	url, finish := startACMEServerStub(t, man, "example.org")
-	defer finish()
-	key, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
-	if err != nil {
-		t.Fatal(err)
-	}
-	man.Client = &acme.Client{
-		Key:          key,
-		DirectoryURL: url,
-	}
-	hello := &tls.ClientHelloInfo{ServerName: "example.org"}
-	if _, err := man.GetCertificate(hello); err == nil {
-		t.Error("got certificate for example.org; wanted error")
-	}
-}
-
-func TestGetCertificate_expiredCache(t *testing.T) {
-	// Make an expired cert and cache it.
-	pk, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
-	if err != nil {
-		t.Fatal(err)
-	}
-	tmpl := &x509.Certificate{
-		SerialNumber: big.NewInt(1),
-		Subject:      pkix.Name{CommonName: "example.org"},
-		NotAfter:     time.Now(),
-	}
-	pub, err := x509.CreateCertificate(rand.Reader, tmpl, tmpl, &pk.PublicKey, pk)
-	if err != nil {
-		t.Fatal(err)
-	}
-	tlscert := &tls.Certificate{
-		Certificate: [][]byte{pub},
-		PrivateKey:  pk,
-	}
-
-	man := &Manager{Prompt: AcceptTOS, Cache: newMemCache()}
-	defer man.stopRenew()
-	if err := man.cachePut(context.Background(), "example.org", tlscert); err != nil {
-		t.Fatalf("man.cachePut: %v", err)
-	}
-
-	// The expired cached cert should trigger a new cert issuance
-	// and return without an error.
-	hello := &tls.ClientHelloInfo{ServerName: "example.org"}
-	testGetCertificate(t, man, "example.org", hello)
-}
-
-func TestGetCertificate_failedAttempt(t *testing.T) {
-	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		w.WriteHeader(http.StatusBadRequest)
-	}))
-	defer ts.Close()
-
-	const example = "example.org"
-	d := createCertRetryAfter
-	f := testDidRemoveState
-	defer func() {
-		createCertRetryAfter = d
-		testDidRemoveState = f
-	}()
-	createCertRetryAfter = 0
-	done := make(chan struct{})
-	testDidRemoveState = func(domain string) {
-		if domain != example {
-			t.Errorf("testDidRemoveState: domain = %q; want %q", domain, example)
-		}
-		close(done)
-	}
-
-	key, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
-	if err != nil {
-		t.Fatal(err)
-	}
-	man := &Manager{
-		Prompt: AcceptTOS,
-		Client: &acme.Client{
-			Key:          key,
-			DirectoryURL: ts.URL,
-		},
-	}
-	defer man.stopRenew()
-	hello := &tls.ClientHelloInfo{ServerName: example}
-	if _, err := man.GetCertificate(hello); err == nil {
-		t.Error("GetCertificate: err is nil")
-	}
-	select {
-	case <-time.After(5 * time.Second):
-		t.Errorf("took too long to remove the %q state", example)
-	case <-done:
-		man.stateMu.Lock()
-		defer man.stateMu.Unlock()
-		if v, exist := man.state[example]; exist {
-			t.Errorf("state exists for %q: %+v", example, v)
-		}
-	}
-}
-
-// startACMEServerStub runs an ACME server
-// The domain argument is the expected domain name of a certificate request.
-func startACMEServerStub(t *testing.T, man *Manager, domain string) (url string, finish func()) {
-	// echo token-02 | shasum -a 256
-	// then divide result in 2 parts separated by dot
-	tokenCertName := "4e8eb87631187e9ff2153b56b13a4dec.13a35d002e485d60ff37354b32f665d9.token.acme.invalid"
-	verifyTokenCert := func() {
-		hello := &tls.ClientHelloInfo{ServerName: tokenCertName}
-		_, err := man.GetCertificate(hello)
-		if err != nil {
-			t.Errorf("verifyTokenCert: GetCertificate(%q): %v", tokenCertName, err)
-			return
-		}
-	}
-
-	// ACME CA server stub
-	var ca *httptest.Server
-	ca = httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		w.Header().Set("Replay-Nonce", "nonce")
-		if r.Method == "HEAD" {
-			// a nonce request
-			return
-		}
-
-		switch r.URL.Path {
-		// discovery
-		case "/":
-			if err := discoTmpl.Execute(w, ca.URL); err != nil {
-				t.Errorf("discoTmpl: %v", err)
-			}
-		// client key registration
-		case "/new-reg":
-			w.Write([]byte("{}"))
-		// domain authorization
-		case "/new-authz":
-			w.Header().Set("Location", ca.URL+"/authz/1")
-			w.WriteHeader(http.StatusCreated)
-			if err := authzTmpl.Execute(w, ca.URL); err != nil {
-				t.Errorf("authzTmpl: %v", err)
-			}
-		// accept tls-sni-02 challenge
-		case "/challenge/2":
-			verifyTokenCert()
-			w.Write([]byte("{}"))
-		// authorization status
-		case "/authz/1":
-			w.Write([]byte(`{"status": "valid"}`))
-		// cert request
-		case "/new-cert":
-			var req struct {
-				CSR string `json:"csr"`
-			}
-			decodePayload(&req, r.Body)
-			b, _ := base64.RawURLEncoding.DecodeString(req.CSR)
-			csr, err := x509.ParseCertificateRequest(b)
-			if err != nil {
-				t.Errorf("new-cert: CSR: %v", err)
-			}
-			if csr.Subject.CommonName != domain {
-				t.Errorf("CommonName in CSR = %q; want %q", csr.Subject.CommonName, domain)
-			}
-			der, err := dummyCert(csr.PublicKey, domain)
-			if err != nil {
-				t.Errorf("new-cert: dummyCert: %v", err)
-			}
-			chainUp := fmt.Sprintf("<%s/ca-cert>; rel=up", ca.URL)
-			w.Header().Set("Link", chainUp)
-			w.WriteHeader(http.StatusCreated)
-			w.Write(der)
-		// CA chain cert
-		case "/ca-cert":
-			der, err := dummyCert(nil, "ca")
-			if err != nil {
-				t.Errorf("ca-cert: dummyCert: %v", err)
-			}
-			w.Write(der)
-		default:
-			t.Errorf("unrecognized r.URL.Path: %s", r.URL.Path)
-		}
-	}))
-	finish = func() {
-		ca.Close()
-
-		// make sure token cert was removed
-		cancel := make(chan struct{})
-		done := make(chan struct{})
-		go func() {
-			defer close(done)
-			tick := time.NewTicker(100 * time.Millisecond)
-			defer tick.Stop()
-			for {
-				hello := &tls.ClientHelloInfo{ServerName: tokenCertName}
-				if _, err := man.GetCertificate(hello); err != nil {
-					return
-				}
-				select {
-				case <-tick.C:
-				case <-cancel:
-					return
-				}
-			}
-		}()
-		select {
-		case <-done:
-		case <-time.After(5 * time.Second):
-			close(cancel)
-			t.Error("token cert was not removed")
-			<-done
-		}
-	}
-	return ca.URL, finish
-}
-
-// tests man.GetCertificate flow using the provided hello argument.
-// The domain argument is the expected domain name of a certificate request.
-func testGetCertificate(t *testing.T, man *Manager, domain string, hello *tls.ClientHelloInfo) {
-	url, finish := startACMEServerStub(t, man, domain)
-	defer finish()
-
-	// use EC key to run faster on 386
-	key, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
-	if err != nil {
-		t.Fatal(err)
-	}
-	man.Client = &acme.Client{
-		Key:          key,
-		DirectoryURL: url,
-	}
-
-	// simulate tls.Config.GetCertificate
-	var tlscert *tls.Certificate
-	done := make(chan struct{})
-	go func() {
-		tlscert, err = man.GetCertificate(hello)
-		close(done)
-	}()
-	select {
-	case <-time.After(time.Minute):
-		t.Fatal("man.GetCertificate took too long to return")
-	case <-done:
-	}
-	if err != nil {
-		t.Fatalf("man.GetCertificate: %v", err)
-	}
-
-	// verify the tlscert is the same we responded with from the CA stub
-	if len(tlscert.Certificate) == 0 {
-		t.Fatal("len(tlscert.Certificate) is 0")
-	}
-	cert, err := x509.ParseCertificate(tlscert.Certificate[0])
-	if err != nil {
-		t.Fatalf("x509.ParseCertificate: %v", err)
-	}
-	if len(cert.DNSNames) == 0 || cert.DNSNames[0] != domain {
-		t.Errorf("cert.DNSNames = %v; want %q", cert.DNSNames, domain)
-	}
-
-}
-
-func TestVerifyHTTP01(t *testing.T) {
-	var (
-		http01 http.Handler
-
-		authzCount      int // num. of created authorizations
-		didAcceptHTTP01 bool
-	)
-
-	verifyHTTPToken := func() {
-		r := httptest.NewRequest("GET", "/.well-known/acme-challenge/token-http-01", nil)
-		w := httptest.NewRecorder()
-		http01.ServeHTTP(w, r)
-		if w.Code != http.StatusOK {
-			t.Errorf("http token: w.Code = %d; want %d", w.Code, http.StatusOK)
-		}
-		if v := string(w.Body.Bytes()); !strings.HasPrefix(v, "token-http-01.") {
-			t.Errorf("http token value = %q; want 'token-http-01.' prefix", v)
-		}
-	}
-
-	// ACME CA server stub, only the needed bits.
-	// TODO: Merge this with startACMEServerStub, making it a configurable CA for testing.
-	var ca *httptest.Server
-	ca = httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		w.Header().Set("Replay-Nonce", "nonce")
-		if r.Method == "HEAD" {
-			// a nonce request
-			return
-		}
-
-		switch r.URL.Path {
-		// Discovery.
-		case "/":
-			if err := discoTmpl.Execute(w, ca.URL); err != nil {
-				t.Errorf("discoTmpl: %v", err)
-			}
-		// Client key registration.
-		case "/new-reg":
-			w.Write([]byte("{}"))
-		// New domain authorization.
-		case "/new-authz":
-			authzCount++
-			w.Header().Set("Location", fmt.Sprintf("%s/authz/%d", ca.URL, authzCount))
-			w.WriteHeader(http.StatusCreated)
-			if err := authzTmpl.Execute(w, ca.URL); err != nil {
-				t.Errorf("authzTmpl: %v", err)
-			}
-		// Accept tls-sni-02.
-		case "/challenge/2":
-			w.Write([]byte("{}"))
-		// Reject tls-sni-01.
-		case "/challenge/1":
-			http.Error(w, "won't accept tls-sni-01", http.StatusBadRequest)
-		// Should not accept dns-01.
-		case "/challenge/dns-01":
-			t.Errorf("dns-01 challenge was accepted")
-			http.Error(w, "won't accept dns-01", http.StatusBadRequest)
-		// Accept http-01.
-		case "/challenge/http-01":
-			didAcceptHTTP01 = true
-			verifyHTTPToken()
-			w.Write([]byte("{}"))
-		// Authorization statuses.
-		// Make tls-sni-xxx invalid.
-		case "/authz/1", "/authz/2":
-			w.Write([]byte(`{"status": "invalid"}`))
-		case "/authz/3", "/authz/4":
-			w.Write([]byte(`{"status": "valid"}`))
-		default:
-			http.NotFound(w, r)
-			t.Errorf("unrecognized r.URL.Path: %s", r.URL.Path)
-		}
-	}))
-	defer ca.Close()
-
-	key, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
-	if err != nil {
-		t.Fatal(err)
-	}
-	m := &Manager{
-		Client: &acme.Client{
-			Key:          key,
-			DirectoryURL: ca.URL,
-		},
-	}
-	http01 = m.HTTPHandler(nil)
-	if err := m.verify(context.Background(), m.Client, "example.org"); err != nil {
-		t.Errorf("m.verify: %v", err)
-	}
-	// Only tls-sni-01, tls-sni-02 and http-01 must be accepted
-	// The dns-01 challenge is unsupported.
-	if authzCount != 3 {
-		t.Errorf("authzCount = %d; want 3", authzCount)
-	}
-	if !didAcceptHTTP01 {
-		t.Error("did not accept http-01 challenge")
-	}
-}
-
-func TestHTTPHandlerDefaultFallback(t *testing.T) {
-	tt := []struct {
-		method, url  string
-		wantCode     int
-		wantLocation string
-	}{
-		{"GET", "http://example.org", 302, "https://example.org/"},
-		{"GET", "http://example.org/foo", 302, "https://example.org/foo"},
-		{"GET", "http://example.org/foo/bar/", 302, "https://example.org/foo/bar/"},
-		{"GET", "http://example.org/?a=b", 302, "https://example.org/?a=b"},
-		{"GET", "http://example.org/foo?a=b", 302, "https://example.org/foo?a=b"},
-		{"GET", "http://example.org:80/foo?a=b", 302, "https://example.org:443/foo?a=b"},
-		{"GET", "http://example.org:80/foo%20bar", 302, "https://example.org:443/foo%20bar"},
-		{"GET", "http://[2602:d1:xxxx::c60a]:1234", 302, "https://[2602:d1:xxxx::c60a]:443/"},
-		{"GET", "http://[2602:d1:xxxx::c60a]", 302, "https://[2602:d1:xxxx::c60a]/"},
-		{"GET", "http://[2602:d1:xxxx::c60a]/foo?a=b", 302, "https://[2602:d1:xxxx::c60a]/foo?a=b"},
-		{"HEAD", "http://example.org", 302, "https://example.org/"},
-		{"HEAD", "http://example.org/foo", 302, "https://example.org/foo"},
-		{"HEAD", "http://example.org/foo/bar/", 302, "https://example.org/foo/bar/"},
-		{"HEAD", "http://example.org/?a=b", 302, "https://example.org/?a=b"},
-		{"HEAD", "http://example.org/foo?a=b", 302, "https://example.org/foo?a=b"},
-		{"POST", "http://example.org", 400, ""},
-		{"PUT", "http://example.org", 400, ""},
-		{"GET", "http://example.org/.well-known/acme-challenge/x", 404, ""},
-	}
-	var m Manager
-	h := m.HTTPHandler(nil)
-	for i, test := range tt {
-		r := httptest.NewRequest(test.method, test.url, nil)
-		w := httptest.NewRecorder()
-		h.ServeHTTP(w, r)
-		if w.Code != test.wantCode {
-			t.Errorf("%d: w.Code = %d; want %d", i, w.Code, test.wantCode)
-			t.Errorf("%d: body: %s", i, w.Body.Bytes())
-		}
-		if v := w.Header().Get("Location"); v != test.wantLocation {
-			t.Errorf("%d: Location = %q; want %q", i, v, test.wantLocation)
-		}
-	}
-}
-
-func TestAccountKeyCache(t *testing.T) {
-	m := Manager{Cache: newMemCache()}
-	ctx := context.Background()
-	k1, err := m.accountKey(ctx)
-	if err != nil {
-		t.Fatal(err)
-	}
-	k2, err := m.accountKey(ctx)
-	if err != nil {
-		t.Fatal(err)
-	}
-	if !reflect.DeepEqual(k1, k2) {
-		t.Errorf("account keys don't match: k1 = %#v; k2 = %#v", k1, k2)
-	}
-}
-
-func TestCache(t *testing.T) {
-	privKey, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
-	if err != nil {
-		t.Fatal(err)
-	}
-	tmpl := &x509.Certificate{
-		SerialNumber: big.NewInt(1),
-		Subject:      pkix.Name{CommonName: "example.org"},
-		NotAfter:     time.Now().Add(time.Hour),
-	}
-	pub, err := x509.CreateCertificate(rand.Reader, tmpl, tmpl, &privKey.PublicKey, privKey)
-	if err != nil {
-		t.Fatal(err)
-	}
-	tlscert := &tls.Certificate{
-		Certificate: [][]byte{pub},
-		PrivateKey:  privKey,
-	}
-
-	man := &Manager{Cache: newMemCache()}
-	defer man.stopRenew()
-	ctx := context.Background()
-	if err := man.cachePut(ctx, "example.org", tlscert); err != nil {
-		t.Fatalf("man.cachePut: %v", err)
-	}
-	res, err := man.cacheGet(ctx, "example.org")
-	if err != nil {
-		t.Fatalf("man.cacheGet: %v", err)
-	}
-	if res == nil {
-		t.Fatal("res is nil")
-	}
-}
-
-func TestHostWhitelist(t *testing.T) {
-	policy := HostWhitelist("example.com", "example.org", "*.example.net")
-	tt := []struct {
-		host  string
-		allow bool
-	}{
-		{"example.com", true},
-		{"example.org", true},
-		{"one.example.com", false},
-		{"two.example.org", false},
-		{"three.example.net", false},
-		{"dummy", false},
-	}
-	for i, test := range tt {
-		err := policy(nil, test.host)
-		if err != nil && test.allow {
-			t.Errorf("%d: policy(%q): %v; want nil", i, test.host, err)
-		}
-		if err == nil && !test.allow {
-			t.Errorf("%d: policy(%q): nil; want an error", i, test.host)
-		}
-	}
-}
-
-func TestValidCert(t *testing.T) {
-	key1, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
-	if err != nil {
-		t.Fatal(err)
-	}
-	key2, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
-	if err != nil {
-		t.Fatal(err)
-	}
-	key3, err := rsa.GenerateKey(rand.Reader, 512)
-	if err != nil {
-		t.Fatal(err)
-	}
-	cert1, err := dummyCert(key1.Public(), "example.org")
-	if err != nil {
-		t.Fatal(err)
-	}
-	cert2, err := dummyCert(key2.Public(), "example.org")
-	if err != nil {
-		t.Fatal(err)
-	}
-	cert3, err := dummyCert(key3.Public(), "example.org")
-	if err != nil {
-		t.Fatal(err)
-	}
-	now := time.Now()
-	early, err := dateDummyCert(key1.Public(), now.Add(time.Hour), now.Add(2*time.Hour), "example.org")
-	if err != nil {
-		t.Fatal(err)
-	}
-	expired, err := dateDummyCert(key1.Public(), now.Add(-2*time.Hour), now.Add(-time.Hour), "example.org")
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	tt := []struct {
-		domain string
-		key    crypto.Signer
-		cert   [][]byte
-		ok     bool
-	}{
-		{"example.org", key1, [][]byte{cert1}, true},
-		{"example.org", key3, [][]byte{cert3}, true},
-		{"example.org", key1, [][]byte{cert1, cert2, cert3}, true},
-		{"example.org", key1, [][]byte{cert1, {1}}, false},
-		{"example.org", key1, [][]byte{{1}}, false},
-		{"example.org", key1, [][]byte{cert2}, false},
-		{"example.org", key2, [][]byte{cert1}, false},
-		{"example.org", key1, [][]byte{cert3}, false},
-		{"example.org", key3, [][]byte{cert1}, false},
-		{"example.net", key1, [][]byte{cert1}, false},
-		{"example.org", key1, [][]byte{early}, false},
-		{"example.org", key1, [][]byte{expired}, false},
-	}
-	for i, test := range tt {
-		leaf, err := validCert(test.domain, test.cert, test.key)
-		if err != nil && test.ok {
-			t.Errorf("%d: err = %v", i, err)
-		}
-		if err == nil && !test.ok {
-			t.Errorf("%d: err is nil", i)
-		}
-		if err == nil && test.ok && leaf == nil {
-			t.Errorf("%d: leaf is nil", i)
-		}
-	}
-}
-
-type cacheGetFunc func(ctx context.Context, key string) ([]byte, error)
-
-func (f cacheGetFunc) Get(ctx context.Context, key string) ([]byte, error) {
-	return f(ctx, key)
-}
-
-func (f cacheGetFunc) Put(ctx context.Context, key string, data []byte) error {
-	return fmt.Errorf("unsupported Put of %q = %q", key, data)
-}
-
-func (f cacheGetFunc) Delete(ctx context.Context, key string) error {
-	return fmt.Errorf("unsupported Delete of %q", key)
-}
-
-func TestManagerGetCertificateBogusSNI(t *testing.T) {
-	m := Manager{
-		Prompt: AcceptTOS,
-		Cache: cacheGetFunc(func(ctx context.Context, key string) ([]byte, error) {
-			return nil, fmt.Errorf("cache.Get of %s", key)
-		}),
-	}
-	tests := []struct {
-		name    string
-		wantErr string
-	}{
-		{"foo.com", "cache.Get of foo.com"},
-		{"foo.com.", "cache.Get of foo.com"},
-		{`a\b.com`, "acme/autocert: server name contains invalid character"},
-		{`a/b.com`, "acme/autocert: server name contains invalid character"},
-		{"", "acme/autocert: missing server name"},
-		{"foo", "acme/autocert: server name component count invalid"},
-		{".foo", "acme/autocert: server name component count invalid"},
-		{"foo.", "acme/autocert: server name component count invalid"},
-		{"fo.o", "cache.Get of fo.o"},
-	}
-	for _, tt := range tests {
-		_, err := m.GetCertificate(&tls.ClientHelloInfo{ServerName: tt.name})
-		got := fmt.Sprint(err)
-		if got != tt.wantErr {
-			t.Errorf("GetCertificate(SNI = %q) = %q; want %q", tt.name, got, tt.wantErr)
-		}
-	}
-}
diff --git a/cmd/ponzu/vendor/golang.org/x/crypto/autocert/cache.go b/cmd/ponzu/vendor/golang.org/x/crypto/autocert/cache.go
deleted file mode 100644
index 61a5fd2..0000000
--- a/cmd/ponzu/vendor/golang.org/x/crypto/autocert/cache.go
+++ /dev/null
@@ -1,130 +0,0 @@
-// Copyright 2016 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 autocert
-
-import (
-	"context"
-	"errors"
-	"io/ioutil"
-	"os"
-	"path/filepath"
-)
-
-// ErrCacheMiss is returned when a certificate is not found in cache.
-var ErrCacheMiss = errors.New("acme/autocert: certificate cache miss")
-
-// Cache is used by Manager to store and retrieve previously obtained certificates
-// as opaque data.
-//
-// The key argument of the methods refers to a domain name but need not be an FQDN.
-// Cache implementations should not rely on the key naming pattern.
-type Cache interface {
-	// Get returns a certificate data for the specified key.
-	// If there's no such key, Get returns ErrCacheMiss.
-	Get(ctx context.Context, key string) ([]byte, error)
-
-	// Put stores the data in the cache under the specified key.
-	// Underlying implementations may use any data storage format,
-	// as long as the reverse operation, Get, results in the original data.
-	Put(ctx context.Context, key string, data []byte) error
-
-	// Delete removes a certificate data from the cache under the specified key.
-	// If there's no such key in the cache, Delete returns nil.
-	Delete(ctx context.Context, key string) error
-}
-
-// DirCache implements Cache using a directory on the local filesystem.
-// If the directory does not exist, it will be created with 0700 permissions.
-type DirCache string
-
-// Get reads a certificate data from the specified file name.
-func (d DirCache) Get(ctx context.Context, name string) ([]byte, error) {
-	name = filepath.Join(string(d), name)
-	var (
-		data []byte
-		err  error
-		done = make(chan struct{})
-	)
-	go func() {
-		data, err = ioutil.ReadFile(name)
-		close(done)
-	}()
-	select {
-	case <-ctx.Done():
-		return nil, ctx.Err()
-	case <-done:
-	}
-	if os.IsNotExist(err) {
-		return nil, ErrCacheMiss
-	}
-	return data, err
-}
-
-// Put writes the certificate data to the specified file name.
-// The file will be created with 0600 permissions.
-func (d DirCache) Put(ctx context.Context, name string, data []byte) error {
-	if err := os.MkdirAll(string(d), 0700); err != nil {
-		return err
-	}
-
-	done := make(chan struct{})
-	var err error
-	go func() {
-		defer close(done)
-		var tmp string
-		if tmp, err = d.writeTempFile(name, data); err != nil {
-			return
-		}
-		select {
-		case <-ctx.Done():
-			// Don't overwrite the file if the context was canceled.
-		default:
-			newName := filepath.Join(string(d), name)
-			err = os.Rename(tmp, newName)
-		}
-	}()
-	select {
-	case <-ctx.Done():
-		return ctx.Err()
-	case <-done:
-	}
-	return err
-}
-
-// Delete removes the specified file name.
-func (d DirCache) Delete(ctx context.Context, name string) error {
-	name = filepath.Join(string(d), name)
-	var (
-		err  error
-		done = make(chan struct{})
-	)
-	go func() {
-		err = os.Remove(name)
-		close(done)
-	}()
-	select {
-	case <-ctx.Done():
-		return ctx.Err()
-	case <-done:
-	}
-	if err != nil && !os.IsNotExist(err) {
-		return err
-	}
-	return nil
-}
-
-// writeTempFile writes b to a temporary file, closes the file and returns its path.
-func (d DirCache) writeTempFile(prefix string, b []byte) (string, error) {
-	// TempFile uses 0600 permissions
-	f, err := ioutil.TempFile(string(d), prefix)
-	if err != nil {
-		return "", err
-	}
-	if _, err := f.Write(b); err != nil {
-		f.Close()
-		return "", err
-	}
-	return f.Name(), f.Close()
-}
diff --git a/cmd/ponzu/vendor/golang.org/x/crypto/autocert/cache_test.go b/cmd/ponzu/vendor/golang.org/x/crypto/autocert/cache_test.go
deleted file mode 100644
index 653b05b..0000000
--- a/cmd/ponzu/vendor/golang.org/x/crypto/autocert/cache_test.go
+++ /dev/null
@@ -1,58 +0,0 @@
-// Copyright 2016 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 autocert
-
-import (
-	"context"
-	"io/ioutil"
-	"os"
-	"path/filepath"
-	"reflect"
-	"testing"
-)
-
-// make sure DirCache satisfies Cache interface
-var _ Cache = DirCache("/")
-
-func TestDirCache(t *testing.T) {
-	dir, err := ioutil.TempDir("", "autocert")
-	if err != nil {
-		t.Fatal(err)
-	}
-	defer os.RemoveAll(dir)
-	dir = filepath.Join(dir, "certs") // a nonexistent dir
-	cache := DirCache(dir)
-	ctx := context.Background()
-
-	// test cache miss
-	if _, err := cache.Get(ctx, "nonexistent"); err != ErrCacheMiss {
-		t.Errorf("get: %v; want ErrCacheMiss", err)
-	}
-
-	// test put/get
-	b1 := []byte{1}
-	if err := cache.Put(ctx, "dummy", b1); err != nil {
-		t.Fatalf("put: %v", err)
-	}
-	b2, err := cache.Get(ctx, "dummy")
-	if err != nil {
-		t.Fatalf("get: %v", err)
-	}
-	if !reflect.DeepEqual(b1, b2) {
-		t.Errorf("b1 = %v; want %v", b1, b2)
-	}
-	name := filepath.Join(dir, "dummy")
-	if _, err := os.Stat(name); err != nil {
-		t.Error(err)
-	}
-
-	// test delete
-	if err := cache.Delete(ctx, "dummy"); err != nil {
-		t.Fatalf("delete: %v", err)
-	}
-	if _, err := cache.Get(ctx, "dummy"); err != ErrCacheMiss {
-		t.Errorf("get: %v; want ErrCacheMiss", err)
-	}
-}
diff --git a/cmd/ponzu/vendor/golang.org/x/crypto/autocert/example_test.go b/cmd/ponzu/vendor/golang.org/x/crypto/autocert/example_test.go
deleted file mode 100644
index 552a625..0000000
--- a/cmd/ponzu/vendor/golang.org/x/crypto/autocert/example_test.go
+++ /dev/null
@@ -1,36 +0,0 @@
-// Copyright 2017 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 autocert_test
-
-import (
-	"crypto/tls"
-	"fmt"
-	"log"
-	"net/http"
-
-	"golang.org/x/crypto/acme/autocert"
-)
-
-func ExampleNewListener() {
-	mux := http.NewServeMux()
-	mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
-		fmt.Fprintf(w, "Hello, TLS user! Your config: %+v", r.TLS)
-	})
-	log.Fatal(http.Serve(autocert.NewListener("example.com"), mux))
-}
-
-func ExampleManager() {
-	m := &autocert.Manager{
-		Cache:      autocert.DirCache("secret-dir"),
-		Prompt:     autocert.AcceptTOS,
-		HostPolicy: autocert.HostWhitelist("example.org"),
-	}
-	go http.ListenAndServe(":http", m.HTTPHandler(nil))
-	s := &http.Server{
-		Addr:      ":https",
-		TLSConfig: &tls.Config{GetCertificate: m.GetCertificate},
-	}
-	s.ListenAndServeTLS("", "")
-}
diff --git a/cmd/ponzu/vendor/golang.org/x/crypto/autocert/listener.go b/cmd/ponzu/vendor/golang.org/x/crypto/autocert/listener.go
deleted file mode 100644
index d744df0..0000000
--- a/cmd/ponzu/vendor/golang.org/x/crypto/autocert/listener.go
+++ /dev/null
@@ -1,160 +0,0 @@
-// Copyright 2017 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 autocert
-
-import (
-	"crypto/tls"
-	"log"
-	"net"
-	"os"
-	"path/filepath"
-	"runtime"
-	"time"
-)
-
-// NewListener returns a net.Listener that listens on the standard TLS
-// port (443) on all interfaces and returns *tls.Conn connections with
-// LetsEncrypt certificates for the provided domain or domains.
-//
-// It enables one-line HTTPS servers:
-//
-//     log.Fatal(http.Serve(autocert.NewListener("example.com"), handler))
-//
-// NewListener is a convenience function for a common configuration.
-// More complex or custom configurations can use the autocert.Manager
-// type instead.
-//
-// Use of this function implies acceptance of the LetsEncrypt Terms of
-// Service. If domains is not empty, the provided domains are passed
-// to HostWhitelist. If domains is empty, the listener will do
-// LetsEncrypt challenges for any requested domain, which is not
-// recommended.
-//
-// Certificates are cached in a "golang-autocert" directory under an
-// operating system-specific cache or temp directory. This may not
-// be suitable for servers spanning multiple machines.
-//
-// The returned listener uses a *tls.Config that enables HTTP/2, and
-// should only be used with servers that support HTTP/2.
-//
-// The returned Listener also enables TCP keep-alives on the accepted
-// connections. The returned *tls.Conn are returned before their TLS
-// handshake has completed.
-func NewListener(domains ...string) net.Listener {
-	m := &Manager{
-		Prompt: AcceptTOS,
-	}
-	if len(domains) > 0 {
-		m.HostPolicy = HostWhitelist(domains...)
-	}
-	dir := cacheDir()
-	if err := os.MkdirAll(dir, 0700); err != nil {
-		log.Printf("warning: autocert.NewListener not using a cache: %v", err)
-	} else {
-		m.Cache = DirCache(dir)
-	}
-	return m.Listener()
-}
-
-// Listener listens on the standard TLS port (443) on all interfaces
-// and returns a net.Listener returning *tls.Conn connections.
-//
-// The returned listener uses a *tls.Config that enables HTTP/2, and
-// should only be used with servers that support HTTP/2.
-//
-// The returned Listener also enables TCP keep-alives on the accepted
-// connections. The returned *tls.Conn are returned before their TLS
-// handshake has completed.
-//
-// Unlike NewListener, it is the caller's responsibility to initialize
-// the Manager m's Prompt, Cache, HostPolicy, and other desired options.
-func (m *Manager) Listener() net.Listener {
-	ln := &listener{
-		m: m,
-		conf: &tls.Config{
-			GetCertificate: m.GetCertificate,           // bonus: panic on nil m
-			NextProtos:     []string{"h2", "http/1.1"}, // Enable HTTP/2
-		},
-	}
-	ln.tcpListener, ln.tcpListenErr = net.Listen("tcp", ":443")
-	return ln
-}
-
-type listener struct {
-	m    *Manager
-	conf *tls.Config
-
-	tcpListener  net.Listener
-	tcpListenErr error
-}
-
-func (ln *listener) Accept() (net.Conn, error) {
-	if ln.tcpListenErr != nil {
-		return nil, ln.tcpListenErr
-	}
-	conn, err := ln.tcpListener.Accept()
-	if err != nil {
-		return nil, err
-	}
-	tcpConn := conn.(*net.TCPConn)
-
-	// Because Listener is a convenience function, help out with
-	// this too.  This is not possible for the caller to set once
-	// we return a *tcp.Conn wrapping an inaccessible net.Conn.
-	// If callers don't want this, they can do things the manual
-	// way and tweak as needed. But this is what net/http does
-	// itself, so copy that. If net/http changes, we can change
-	// here too.
-	tcpConn.SetKeepAlive(true)
-	tcpConn.SetKeepAlivePeriod(3 * time.Minute)
-
-	return tls.Server(tcpConn, ln.conf), nil
-}
-
-func (ln *listener) Addr() net.Addr {
-	if ln.tcpListener != nil {
-		return ln.tcpListener.Addr()
-	}
-	// net.Listen failed. Return something non-nil in case callers
-	// call Addr before Accept:
-	return &net.TCPAddr{IP: net.IP{0, 0, 0, 0}, Port: 443}
-}
-
-func (ln *listener) Close() error {
-	if ln.tcpListenErr != nil {
-		return ln.tcpListenErr
-	}
-	return ln.tcpListener.Close()
-}
-
-func homeDir() string {
-	if runtime.GOOS == "windows" {
-		return os.Getenv("HOMEDRIVE") + os.Getenv("HOMEPATH")
-	}
-	if h := os.Getenv("HOME"); h != "" {
-		return h
-	}
-	return "/"
-}
-
-func cacheDir() string {
-	const base = "golang-autocert"
-	switch runtime.GOOS {
-	case "darwin":
-		return filepath.Join(homeDir(), "Library", "Caches", base)
-	case "windows":
-		for _, ev := range []string{"APPDATA", "CSIDL_APPDATA", "TEMP", "TMP"} {
-			if v := os.Getenv(ev); v != "" {
-				return filepath.Join(v, base)
-			}
-		}
-		// Worst case:
-		return filepath.Join(homeDir(), base)
-	}
-	if xdg := os.Getenv("XDG_CACHE_HOME"); xdg != "" {
-		return filepath.Join(xdg, base)
-	}
-	return filepath.Join(homeDir(), ".cache", base)
-}
diff --git a/cmd/ponzu/vendor/golang.org/x/crypto/autocert/renewal.go b/cmd/ponzu/vendor/golang.org/x/crypto/autocert/renewal.go
deleted file mode 100644
index 6c5da2b..0000000
--- a/cmd/ponzu/vendor/golang.org/x/crypto/autocert/renewal.go
+++ /dev/null
@@ -1,124 +0,0 @@
-// Copyright 2016 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 autocert
-
-import (
-	"context"
-	"crypto"
-	"sync"
-	"time"
-)
-
-// renewJitter is the maximum deviation from Manager.RenewBefore.
-const renewJitter = time.Hour
-
-// domainRenewal tracks the state used by the periodic timers
-// renewing a single domain's cert.
-type domainRenewal struct {
-	m      *Manager
-	domain string
-	key    crypto.Signer
-
-	timerMu sync.Mutex
-	timer   *time.Timer
-}
-
-// start starts a cert renewal timer at the time
-// defined by the certificate expiration time exp.
-//
-// If the timer is already started, calling start is a noop.
-func (dr *domainRenewal) start(exp time.Time) {
-	dr.timerMu.Lock()
-	defer dr.timerMu.Unlock()
-	if dr.timer != nil {
-		return
-	}
-	dr.timer = time.AfterFunc(dr.next(exp), dr.renew)
-}
-
-// stop stops the cert renewal timer.
-// If the timer is already stopped, calling stop is a noop.
-func (dr *domainRenewal) stop() {
-	dr.timerMu.Lock()
-	defer dr.timerMu.Unlock()
-	if dr.timer == nil {
-		return
-	}
-	dr.timer.Stop()
-	dr.timer = nil
-}
-
-// renew is called periodically by a timer.
-// The first renew call is kicked off by dr.start.
-func (dr *domainRenewal) renew() {
-	dr.timerMu.Lock()
-	defer dr.timerMu.Unlock()
-	if dr.timer == nil {
-		return
-	}
-
-	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Minute)
-	defer cancel()
-	// TODO: rotate dr.key at some point?
-	next, err := dr.do(ctx)
-	if err != nil {
-		next = renewJitter / 2
-		next += time.Duration(pseudoRand.int63n(int64(next)))
-	}
-	dr.timer = time.AfterFunc(next, dr.renew)
-	testDidRenewLoop(next, err)
-}
-
-// do is similar to Manager.createCert but it doesn't lock a Manager.state item.
-// Instead, it requests a new certificate independently and, upon success,
-// replaces dr.m.state item with a new one and updates cache for the given domain.
-//
-// It may return immediately if the expiration date of the currently cached cert
-// is far enough in the future.
-//
-// The returned value is a time interval after which the renewal should occur again.
-func (dr *domainRenewal) do(ctx context.Context) (time.Duration, error) {
-	// a race is likely unavoidable in a distributed environment
-	// but we try nonetheless
-	if tlscert, err := dr.m.cacheGet(ctx, dr.domain); err == nil {
-		next := dr.next(tlscert.Leaf.NotAfter)
-		if next > dr.m.renewBefore()+renewJitter {
-			return next, nil
-		}
-	}
-
-	der, leaf, err := dr.m.authorizedCert(ctx, dr.key, dr.domain)
-	if err != nil {
-		return 0, err
-	}
-	state := &certState{
-		key:  dr.key,
-		cert: der,
-		leaf: leaf,
-	}
-	tlscert, err := state.tlscert()
-	if err != nil {
-		return 0, err
-	}
-	dr.m.cachePut(ctx, dr.domain, tlscert)
-	dr.m.stateMu.Lock()
-	defer dr.m.stateMu.Unlock()
-	// m.state is guaranteed to be non-nil at this point
-	dr.m.state[dr.domain] = state
-	return dr.next(leaf.NotAfter), nil
-}
-
-func (dr *domainRenewal) next(expiry time.Time) time.Duration {
-	d := expiry.Sub(timeNow()) - dr.m.renewBefore()
-	// add a bit of randomness to renew deadline
-	n := pseudoRand.int63n(int64(renewJitter))
-	d -= time.Duration(n)
-	if d < 0 {
-		return 0
-	}
-	return d
-}
-
-var testDidRenewLoop = func(next time.Duration, err error) {}
diff --git a/cmd/ponzu/vendor/golang.org/x/crypto/autocert/renewal_test.go b/cmd/ponzu/vendor/golang.org/x/crypto/autocert/renewal_test.go
deleted file mode 100644
index 11d40ff..0000000
--- a/cmd/ponzu/vendor/golang.org/x/crypto/autocert/renewal_test.go
+++ /dev/null
@@ -1,191 +0,0 @@
-// Copyright 2016 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 autocert
-
-import (
-	"context"
-	"crypto/ecdsa"
-	"crypto/elliptic"
-	"crypto/rand"
-	"crypto/tls"
-	"crypto/x509"
-	"encoding/base64"
-	"fmt"
-	"net/http"
-	"net/http/httptest"
-	"testing"
-	"time"
-
-	"golang.org/x/crypto/acme"
-)
-
-func TestRenewalNext(t *testing.T) {
-	now := time.Now()
-	timeNow = func() time.Time { return now }
-	defer func() { timeNow = time.Now }()
-
-	man := &Manager{RenewBefore: 7 * 24 * time.Hour}
-	defer man.stopRenew()
-	tt := []struct {
-		expiry   time.Time
-		min, max time.Duration
-	}{
-		{now.Add(90 * 24 * time.Hour), 83*24*time.Hour - renewJitter, 83 * 24 * time.Hour},
-		{now.Add(time.Hour), 0, 1},
-		{now, 0, 1},
-		{now.Add(-time.Hour), 0, 1},
-	}
-
-	dr := &domainRenewal{m: man}
-	for i, test := range tt {
-		next := dr.next(test.expiry)
-		if next < test.min || test.max < next {
-			t.Errorf("%d: next = %v; want between %v and %v", i, next, test.min, test.max)
-		}
-	}
-}
-
-func TestRenewFromCache(t *testing.T) {
-	const domain = "example.org"
-
-	// ACME CA server stub
-	var ca *httptest.Server
-	ca = httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		w.Header().Set("Replay-Nonce", "nonce")
-		if r.Method == "HEAD" {
-			// a nonce request
-			return
-		}
-
-		switch r.URL.Path {
-		// discovery
-		case "/":
-			if err := discoTmpl.Execute(w, ca.URL); err != nil {
-				t.Fatalf("discoTmpl: %v", err)
-			}
-		// client key registration
-		case "/new-reg":
-			w.Write([]byte("{}"))
-		// domain authorization
-		case "/new-authz":
-			w.Header().Set("Location", ca.URL+"/authz/1")
-			w.WriteHeader(http.StatusCreated)
-			w.Write([]byte(`{"status": "valid"}`))
-		// cert request
-		case "/new-cert":
-			var req struct {
-				CSR string `json:"csr"`
-			}
-			decodePayload(&req, r.Body)
-			b, _ := base64.RawURLEncoding.DecodeString(req.CSR)
-			csr, err := x509.ParseCertificateRequest(b)
-			if err != nil {
-				t.Fatalf("new-cert: CSR: %v", err)
-			}
-			der, err := dummyCert(csr.PublicKey, domain)
-			if err != nil {
-				t.Fatalf("new-cert: dummyCert: %v", err)
-			}
-			chainUp := fmt.Sprintf("<%s/ca-cert>; rel=up", ca.URL)
-			w.Header().Set("Link", chainUp)
-			w.WriteHeader(http.StatusCreated)
-			w.Write(der)
-		// CA chain cert
-		case "/ca-cert":
-			der, err := dummyCert(nil, "ca")
-			if err != nil {
-				t.Fatalf("ca-cert: dummyCert: %v", err)
-			}
-			w.Write(der)
-		default:
-			t.Errorf("unrecognized r.URL.Path: %s", r.URL.Path)
-		}
-	}))
-	defer ca.Close()
-
-	// use EC key to run faster on 386
-	key, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
-	if err != nil {
-		t.Fatal(err)
-	}
-	man := &Manager{
-		Prompt:      AcceptTOS,
-		Cache:       newMemCache(),
-		RenewBefore: 24 * time.Hour,
-		Client: &acme.Client{
-			Key:          key,
-			DirectoryURL: ca.URL,
-		},
-	}
-	defer man.stopRenew()
-
-	// cache an almost expired cert
-	now := time.Now()
-	cert, err := dateDummyCert(key.Public(), now.Add(-2*time.Hour), now.Add(time.Minute), domain)
-	if err != nil {
-		t.Fatal(err)
-	}
-	tlscert := &tls.Certificate{PrivateKey: key, Certificate: [][]byte{cert}}
-	if err := man.cachePut(context.Background(), domain, tlscert); err != nil {
-		t.Fatal(err)
-	}
-
-	// veriy the renewal happened
-	defer func() {
-		testDidRenewLoop = func(next time.Duration, err error) {}
-	}()
-	done := make(chan struct{})
-	testDidRenewLoop = func(next time.Duration, err error) {
-		defer close(done)
-		if err != nil {
-			t.Errorf("testDidRenewLoop: %v", err)
-		}
-		// Next should be about 90 days:
-		// dummyCert creates 90days expiry + account for man.RenewBefore.
-		// Previous expiration was within 1 min.
-		future := 88 * 24 * time.Hour
-		if next < future {
-			t.Errorf("testDidRenewLoop: next = %v; want >= %v", next, future)
-		}
-
-		// ensure the new cert is cached
-		after := time.Now().Add(future)
-		tlscert, err := man.cacheGet(context.Background(), domain)
-		if err != nil {
-			t.Fatalf("man.cacheGet: %v", err)
-		}
-		if !tlscert.Leaf.NotAfter.After(after) {
-			t.Errorf("cache leaf.NotAfter = %v; want > %v", tlscert.Leaf.NotAfter, after)
-		}
-
-		// verify the old cert is also replaced in memory
-		man.stateMu.Lock()
-		defer man.stateMu.Unlock()
-		s := man.state[domain]
-		if s == nil {
-			t.Fatalf("m.state[%q] is nil", domain)
-		}
-		tlscert, err = s.tlscert()
-		if err != nil {
-			t.Fatalf("s.tlscert: %v", err)
-		}
-		if !tlscert.Leaf.NotAfter.After(after) {
-			t.Errorf("state leaf.NotAfter = %v; want > %v", tlscert.Leaf.NotAfter, after)
-		}
-	}
-
-	// trigger renew
-	hello := &tls.ClientHelloInfo{ServerName: domain}
-	if _, err := man.GetCertificate(hello); err != nil {
-		t.Fatal(err)
-	}
-
-	// wait for renew loop
-	select {
-	case <-time.After(10 * time.Second):
-		t.Fatal("renew took too long to occur")
-	case <-done:
-	}
-}
diff --git a/cmd/ponzu/vendor/golang.org/x/crypto/bcrypt/base64.go b/cmd/ponzu/vendor/golang.org/x/crypto/bcrypt/base64.go
deleted file mode 100644
index fc31160..0000000
--- a/cmd/ponzu/vendor/golang.org/x/crypto/bcrypt/base64.go
+++ /dev/null
@@ -1,35 +0,0 @@
-// 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 bcrypt
-
-import "encoding/base64"
-
-const alphabet = "./ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"
-
-var bcEncoding = base64.NewEncoding(alphabet)
-
-func base64Encode(src []byte) []byte {
-	n := bcEncoding.EncodedLen(len(src))
-	dst := make([]byte, n)
-	bcEncoding.Encode(dst, src)
-	for dst[n-1] == '=' {
-		n--
-	}
-	return dst[:n]
-}
-
-func base64Decode(src []byte) ([]byte, error) {
-	numOfEquals := 4 - (len(src) % 4)
-	for i := 0; i < numOfEquals; i++ {
-		src = append(src, '=')
-	}
-
-	dst := make([]byte, bcEncoding.DecodedLen(len(src)))
-	n, err := bcEncoding.Decode(dst, src)
-	if err != nil {
-		return nil, err
-	}
-	return dst[:n], nil
-}
diff --git a/cmd/ponzu/vendor/golang.org/x/crypto/bcrypt/bcrypt.go b/cmd/ponzu/vendor/golang.org/x/crypto/bcrypt/bcrypt.go
deleted file mode 100644
index f8b807f..0000000
--- a/cmd/ponzu/vendor/golang.org/x/crypto/bcrypt/bcrypt.go
+++ /dev/null
@@ -1,294 +0,0 @@
-// 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 bcrypt implements Provos and Mazières's bcrypt adaptive hashing
-// algorithm. See http://www.usenix.org/event/usenix99/provos/provos.pdf
-package bcrypt // import "golang.org/x/crypto/bcrypt"
-
-// The code is a port of Provos and Mazières's C implementation.
-import (
-	"crypto/rand"
-	"crypto/subtle"
-	"errors"
-	"fmt"
-	"golang.org/x/crypto/blowfish"
-	"io"
-	"strconv"
-)
-
-const (
-	MinCost     int = 4  // the minimum allowable cost as passed in to GenerateFromPassword
-	MaxCost     int = 31 // the maximum allowable cost as passed in to GenerateFromPassword
-	DefaultCost int = 10 // the cost that will actually be set if a cost below MinCost is passed into GenerateFromPassword
-)
-
-// The error returned from CompareHashAndPassword when a password and hash do
-// not match.
-var ErrMismatchedHashAndPassword = errors.New("crypto/bcrypt: hashedPassword is not the hash of the given password")
-
-// The error returned from CompareHashAndPassword when a hash is too short to
-// be a bcrypt hash.
-var ErrHashTooShort = errors.New("crypto/bcrypt: hashedSecret too short to be a bcrypted password")
-
-// The error returned from CompareHashAndPassword when a hash was created with
-// a bcrypt algorithm newer than this implementation.
-type HashVersionTooNewError byte
-
-func (hv HashVersionTooNewError) Error() string {
-	return fmt.Sprintf("crypto/bcrypt: bcrypt algorithm version '%c' requested is newer than current version '%c'", byte(hv), majorVersion)
-}
-
-// The error returned from CompareHashAndPassword when a hash starts with something other than '$'
-type InvalidHashPrefixError byte
-
-func (ih InvalidHashPrefixError) Error() string {
-	return fmt.Sprintf("crypto/bcrypt: bcrypt hashes must start with '$', but hashedSecret started with '%c'", byte(ih))
-}
-
-type InvalidCostError int
-
-func (ic InvalidCostError) Error() string {
-	return fmt.Sprintf("crypto/bcrypt: cost %d is outside allowed range (%d,%d)", int(ic), int(MinCost), int(MaxCost))
-}
-
-const (
-	majorVersion       = '2'
-	minorVersion       = 'a'
-	maxSaltSize        = 16
-	maxCryptedHashSize = 23
-	encodedSaltSize    = 22
-	encodedHashSize    = 31
-	minHashSize        = 59
-)
-
-// magicCipherData is an IV for the 64 Blowfish encryption calls in
-// bcrypt(). It's the string "OrpheanBeholderScryDoubt" in big-endian bytes.
-var magicCipherData = []byte{
-	0x4f, 0x72, 0x70, 0x68,
-	0x65, 0x61, 0x6e, 0x42,
-	0x65, 0x68, 0x6f, 0x6c,
-	0x64, 0x65, 0x72, 0x53,
-	0x63, 0x72, 0x79, 0x44,
-	0x6f, 0x75, 0x62, 0x74,
-}
-
-type hashed struct {
-	hash  []byte
-	salt  []byte
-	cost  int // allowed range is MinCost to MaxCost
-	major byte
-	minor byte
-}
-
-// GenerateFromPassword returns the bcrypt hash of the password at the given
-// cost. If the cost given is less than MinCost, the cost will be set to
-// DefaultCost, instead. Use CompareHashAndPassword, as defined in this package,
-// to compare the returned hashed password with its cleartext version.
-func GenerateFromPassword(password []byte, cost int) ([]byte, error) {
-	p, err := newFromPassword(password, cost)
-	if err != nil {
-		return nil, err
-	}
-	return p.Hash(), nil
-}
-
-// CompareHashAndPassword compares a bcrypt hashed password with its possible
-// plaintext equivalent. Returns nil on success, or an error on failure.
-func CompareHashAndPassword(hashedPassword, password []byte) error {
-	p, err := newFromHash(hashedPassword)
-	if err != nil {
-		return err
-	}
-
-	otherHash, err := bcrypt(password, p.cost, p.salt)
-	if err != nil {
-		return err
-	}
-
-	otherP := &hashed{otherHash, p.salt, p.cost, p.major, p.minor}
-	if subtle.ConstantTimeCompare(p.Hash(), otherP.Hash()) == 1 {
-		return nil
-	}
-
-	return ErrMismatchedHashAndPassword
-}
-
-// Cost returns the hashing cost used to create the given hashed
-// password. When, in the future, the hashing cost of a password system needs
-// to be increased in order to adjust for greater computational power, this
-// function allows one to establish which passwords need to be updated.
-func Cost(hashedPassword []byte) (int, error) {
-	p, err := newFromHash(hashedPassword)
-	if err != nil {
-		return 0, err
-	}
-	return p.cost, nil
-}
-
-func newFromPassword(password []byte, cost int) (*hashed, error) {
-	if cost < MinCost {
-		cost = DefaultCost
-	}
-	p := new(hashed)
-	p.major = majorVersion
-	p.minor = minorVersion
-
-	err := checkCost(cost)
-	if err != nil {
-		return nil, err
-	}
-	p.cost = cost
-
-	unencodedSalt := make([]byte, maxSaltSize)
-	_, err = io.ReadFull(rand.Reader, unencodedSalt)
-	if err != nil {
-		return nil, err
-	}
-
-	p.salt = base64Encode(unencodedSalt)
-	hash, err := bcrypt(password, p.cost, p.salt)
-	if err != nil {
-		return nil, err
-	}
-	p.hash = hash
-	return p, err
-}
-
-func newFromHash(hashedSecret []byte) (*hashed, error) {
-	if len(hashedSecret) < minHashSize {
-		return nil, ErrHashTooShort
-	}
-	p := new(hashed)
-	n, err := p.decodeVersion(hashedSecret)
-	if err != nil {
-		return nil, err
-	}
-	hashedSecret = hashedSecret[n:]
-	n, err = p.decodeCost(hashedSecret)
-	if err != nil {
-		return nil, err
-	}
-	hashedSecret = hashedSecret[n:]
-
-	// The "+2" is here because we'll have to append at most 2 '=' to the salt
-	// when base64 decoding it in expensiveBlowfishSetup().
-	p.salt = make([]byte, encodedSaltSize, encodedSaltSize+2)
-	copy(p.salt, hashedSecret[:encodedSaltSize])
-
-	hashedSecret = hashedSecret[encodedSaltSize:]
-	p.hash = make([]byte, len(hashedSecret))
-	copy(p.hash, hashedSecret)
-
-	return p, nil
-}
-
-func bcrypt(password []byte, cost int, salt []byte) ([]byte, error) {
-	cipherData := make([]byte, len(magicCipherData))
-	copy(cipherData, magicCipherData)
-
-	c, err := expensiveBlowfishSetup(password, uint32(cost), salt)
-	if err != nil {
-		return nil, err
-	}
-
-	for i := 0; i < 24; i += 8 {
-		for j := 0; j < 64; j++ {
-			c.Encrypt(cipherData[i:i+8], cipherData[i:i+8])
-		}
-	}
-
-	// Bug compatibility with C bcrypt implementations. We only encode 23 of
-	// the 24 bytes encrypted.
-	hsh := base64Encode(cipherData[:maxCryptedHashSize])
-	return hsh, nil
-}
-
-func expensiveBlowfishSetup(key []byte, cost uint32, salt []byte) (*blowfish.Cipher, error) {
-
-	csalt, err := base64Decode(salt)
-	if err != nil {
-		return nil, err
-	}
-
-	// Bug compatibility with C bcrypt implementations. They use the trailing
-	// NULL in the key string during expansion.
-	ckey := append(key, 0)
-
-	c, err := blowfish.NewSaltedCipher(ckey, csalt)
-	if err != nil {
-		return nil, err
-	}
-
-	var i, rounds uint64
-	rounds = 1 << cost
-	for i = 0; i < rounds; i++ {
-		blowfish.ExpandKey(ckey, c)
-		blowfish.ExpandKey(csalt, c)
-	}
-
-	return c, nil
-}
-
-func (p *hashed) Hash() []byte {
-	arr := make([]byte, 60)
-	arr[0] = '$'
-	arr[1] = p.major
-	n := 2
-	if p.minor != 0 {
-		arr[2] = p.minor
-		n = 3
-	}
-	arr[n] = '$'
-	n += 1
-	copy(arr[n:], []byte(fmt.Sprintf("%02d", p.cost)))
-	n += 2
-	arr[n] = '$'
-	n += 1
-	copy(arr[n:], p.salt)
-	n += encodedSaltSize
-	copy(arr[n:], p.hash)
-	n += encodedHashSize
-	return arr[:n]
-}
-
-func (p *hashed) decodeVersion(sbytes []byte) (int, error) {
-	if sbytes[0] != '$' {
-		return -1, InvalidHashPrefixError(sbytes[0])
-	}
-	if sbytes[1] > majorVersion {
-		return -1, HashVersionTooNewError(sbytes[1])
-	}
-	p.major = sbytes[1]
-	n := 3
-	if sbytes[2] != '$' {
-		p.minor = sbytes[2]
-		n++
-	}
-	return n, nil
-}
-
-// sbytes should begin where decodeVersion left off.
-func (p *hashed) decodeCost(sbytes []byte) (int, error) {
-	cost, err := strconv.Atoi(string(sbytes[0:2]))
-	if err != nil {
-		return -1, err
-	}
-	err = checkCost(cost)
-	if err != nil {
-		return -1, err
-	}
-	p.cost = cost
-	return 3, nil
-}
-
-func (p *hashed) String() string {
-	return fmt.Sprintf("&{hash: %#v, salt: %#v, cost: %d, major: %c, minor: %c}", string(p.hash), p.salt, p.cost, p.major, p.minor)
-}
-
-func checkCost(cost int) error {
-	if cost < MinCost || cost > MaxCost {
-		return InvalidCostError(cost)
-	}
-	return nil
-}
diff --git a/cmd/ponzu/vendor/golang.org/x/crypto/bcrypt/bcrypt_test.go b/cmd/ponzu/vendor/golang.org/x/crypto/bcrypt/bcrypt_test.go
deleted file mode 100644
index f08a6f5..0000000
--- a/cmd/ponzu/vendor/golang.org/x/crypto/bcrypt/bcrypt_test.go
+++ /dev/null
@@ -1,226 +0,0 @@
-// 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 bcrypt
-
-import (
-	"bytes"
-	"fmt"
-	"testing"
-)
-
-func TestBcryptingIsEasy(t *testing.T) {
-	pass := []byte("mypassword")
-	hp, err := GenerateFromPassword(pass, 0)
-	if err != nil {
-		t.Fatalf("GenerateFromPassword error: %s", err)
-	}
-
-	if CompareHashAndPassword(hp, pass) != nil {
-		t.Errorf("%v should hash %s correctly", hp, pass)
-	}
-
-	notPass := "notthepass"
-	err = CompareHashAndPassword(hp, []byte(notPass))
-	if err != ErrMismatchedHashAndPassword {
-		t.Errorf("%v and %s should be mismatched", hp, notPass)
-	}
-}
-
-func TestBcryptingIsCorrect(t *testing.T) {
-	pass := []byte("allmine")
-	salt := []byte("XajjQvNhvvRt5GSeFk1xFe")
-	expectedHash := []byte("$2a$10$XajjQvNhvvRt5GSeFk1xFeyqRrsxkhBkUiQeg0dt.wU1qD4aFDcga")
-
-	hash, err := bcrypt(pass, 10, salt)
-	if err != nil {
-		t.Fatalf("bcrypt blew up: %v", err)
-	}
-	if !bytes.HasSuffix(expectedHash, hash) {
-		t.Errorf("%v should be the suffix of %v", hash, expectedHash)
-	}
-
-	h, err := newFromHash(expectedHash)
-	if err != nil {
-		t.Errorf("Unable to parse %s: %v", string(expectedHash), err)
-	}
-
-	// This is not the safe way to compare these hashes. We do this only for
-	// testing clarity. Use bcrypt.CompareHashAndPassword()
-	if err == nil && !bytes.Equal(expectedHash, h.Hash()) {
-		t.Errorf("Parsed hash %v should equal %v", h.Hash(), expectedHash)
-	}
-}
-
-func TestVeryShortPasswords(t *testing.T) {
-	key := []byte("k")
-	salt := []byte("XajjQvNhvvRt5GSeFk1xFe")
-	_, err := bcrypt(key, 10, salt)
-	if err != nil {
-		t.Errorf("One byte key resulted in error: %s", err)
-	}
-}
-
-func TestTooLongPasswordsWork(t *testing.T) {
-	salt := []byte("XajjQvNhvvRt5GSeFk1xFe")
-	// One byte over the usual 56 byte limit that blowfish has
-	tooLongPass := []byte("012345678901234567890123456789012345678901234567890123456")
-	tooLongExpected := []byte("$2a$10$XajjQvNhvvRt5GSeFk1xFe5l47dONXg781AmZtd869sO8zfsHuw7C")
-	hash, err := bcrypt(tooLongPass, 10, salt)
-	if err != nil {
-		t.Fatalf("bcrypt blew up on long password: %v", err)
-	}
-	if !bytes.HasSuffix(tooLongExpected, hash) {
-		t.Errorf("%v should be the suffix of %v", hash, tooLongExpected)
-	}
-}
-
-type InvalidHashTest struct {
-	err  error
-	hash []byte
-}
-
-var invalidTests = []InvalidHashTest{
-	{ErrHashTooShort, []byte("$2a$10$fooo")},
-	{ErrHashTooShort, []byte("$2a")},
-	{HashVersionTooNewError('3'), []byte("$3a$10$sssssssssssssssssssssshhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh")},
-	{InvalidHashPrefixError('%'), []byte("%2a$10$sssssssssssssssssssssshhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh")},
-	{InvalidCostError(32), []byte("$2a$32$sssssssssssssssssssssshhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh")},
-}
-
-func TestInvalidHashErrors(t *testing.T) {
-	check := func(name string, expected, err error) {
-		if err == nil {
-			t.Errorf("%s: Should have returned an error", name)
-		}
-		if err != nil && err != expected {
-			t.Errorf("%s gave err %v but should have given %v", name, err, expected)
-		}
-	}
-	for _, iht := range invalidTests {
-		_, err := newFromHash(iht.hash)
-		check("newFromHash", iht.err, err)
-		err = CompareHashAndPassword(iht.hash, []byte("anything"))
-		check("CompareHashAndPassword", iht.err, err)
-	}
-}
-
-func TestUnpaddedBase64Encoding(t *testing.T) {
-	original := []byte{101, 201, 101, 75, 19, 227, 199, 20, 239, 236, 133, 32, 30, 109, 243, 30}
-	encodedOriginal := []byte("XajjQvNhvvRt5GSeFk1xFe")
-
-	encoded := base64Encode(original)
-
-	if !bytes.Equal(encodedOriginal, encoded) {
-		t.Errorf("Encoded %v should have equaled %v", encoded, encodedOriginal)
-	}
-
-	decoded, err := base64Decode(encodedOriginal)
-	if err != nil {
-		t.Fatalf("base64Decode blew up: %s", err)
-	}
-
-	if !bytes.Equal(decoded, original) {
-		t.Errorf("Decoded %v should have equaled %v", decoded, original)
-	}
-}
-
-func TestCost(t *testing.T) {
-	suffix := "XajjQvNhvvRt5GSeFk1xFe5l47dONXg781AmZtd869sO8zfsHuw7C"
-	for _, vers := range []string{"2a", "2"} {
-		for _, cost := range []int{4, 10} {
-			s := fmt.Sprintf("$%s$%02d$%s", vers, cost, suffix)
-			h := []byte(s)
-			actual, err := Cost(h)
-			if err != nil {
-				t.Errorf("Cost, error: %s", err)
-				continue
-			}
-			if actual != cost {
-				t.Errorf("Cost, expected: %d, actual: %d", cost, actual)
-			}
-		}
-	}
-	_, err := Cost([]byte("$a$a$" + suffix))
-	if err == nil {
-		t.Errorf("Cost, malformed but no error returned")
-	}
-}
-
-func TestCostValidationInHash(t *testing.T) {
-	if testing.Short() {
-		return
-	}
-
-	pass := []byte("mypassword")
-
-	for c := 0; c < MinCost; c++ {
-		p, _ := newFromPassword(pass, c)
-		if p.cost != DefaultCost {
-			t.Errorf("newFromPassword should default costs below %d to %d, but was %d", MinCost, DefaultCost, p.cost)
-		}
-	}
-
-	p, _ := newFromPassword(pass, 14)
-	if p.cost != 14 {
-		t.Errorf("newFromPassword should default cost to 14, but was %d", p.cost)
-	}
-
-	hp, _ := newFromHash(p.Hash())
-	if p.cost != hp.cost {
-		t.Errorf("newFromHash should maintain the cost at %d, but was %d", p.cost, hp.cost)
-	}
-
-	_, err := newFromPassword(pass, 32)
-	if err == nil {
-		t.Fatalf("newFromPassword: should return a cost error")
-	}
-	if err != InvalidCostError(32) {
-		t.Errorf("newFromPassword: should return cost error, got %#v", err)
-	}
-}
-
-func TestCostReturnsWithLeadingZeroes(t *testing.T) {
-	hp, _ := newFromPassword([]byte("abcdefgh"), 7)
-	cost := hp.Hash()[4:7]
-	expected := []byte("07$")
-
-	if !bytes.Equal(expected, cost) {
-		t.Errorf("single digit costs in hash should have leading zeros: was %v instead of %v", cost, expected)
-	}
-}
-
-func TestMinorNotRequired(t *testing.T) {
-	noMinorHash := []byte("$2$10$XajjQvNhvvRt5GSeFk1xFeyqRrsxkhBkUiQeg0dt.wU1qD4aFDcga")
-	h, err := newFromHash(noMinorHash)
-	if err != nil {
-		t.Fatalf("No minor hash blew up: %s", err)
-	}
-	if h.minor != 0 {
-		t.Errorf("Should leave minor version at 0, but was %d", h.minor)
-	}
-
-	if !bytes.Equal(noMinorHash, h.Hash()) {
-		t.Errorf("Should generate hash %v, but created %v", noMinorHash, h.Hash())
-	}
-}
-
-func BenchmarkEqual(b *testing.B) {
-	b.StopTimer()
-	passwd := []byte("somepasswordyoulike")
-	hash, _ := GenerateFromPassword(passwd, 10)
-	b.StartTimer()
-	for i := 0; i < b.N; i++ {
-		CompareHashAndPassword(hash, passwd)
-	}
-}
-
-func BenchmarkGeneration(b *testing.B) {
-	b.StopTimer()
-	passwd := []byte("mylongpassword1234")
-	b.StartTimer()
-	for i := 0; i < b.N; i++ {
-		GenerateFromPassword(passwd, 10)
-	}
-}