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-rw-r--r--modules/caddytls/acmeissuer.go221
-rw-r--r--modules/caddytls/internalissuer.go57
-rw-r--r--modules/caddytls/tls.go6
-rw-r--r--modules/caddytls/zerosslissuer.go236
4 files changed, 453 insertions, 67 deletions
diff --git a/modules/caddytls/acmeissuer.go b/modules/caddytls/acmeissuer.go
index 8fe308d..963143b 100644
--- a/modules/caddytls/acmeissuer.go
+++ b/modules/caddytls/acmeissuer.go
@@ -20,9 +20,11 @@ import (
"fmt"
"io/ioutil"
"net/url"
+ "strconv"
"time"
"github.com/caddyserver/caddy/v2"
+ "github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
"github.com/caddyserver/certmagic"
"github.com/mholt/acmez"
"github.com/mholt/acmez/acme"
@@ -85,13 +87,13 @@ func (ACMEIssuer) CaddyModule() caddy.ModuleInfo {
}
}
-// Provision sets up m.
-func (m *ACMEIssuer) Provision(ctx caddy.Context) error {
- m.logger = ctx.Logger(m)
+// Provision sets up iss.
+func (iss *ACMEIssuer) Provision(ctx caddy.Context) error {
+ iss.logger = ctx.Logger(iss)
// DNS providers
- if m.Challenges != nil && m.Challenges.DNS != nil && m.Challenges.DNS.ProviderRaw != nil {
- val, err := ctx.LoadModule(m.Challenges.DNS, "ProviderRaw")
+ if iss.Challenges != nil && iss.Challenges.DNS != nil && iss.Challenges.DNS.ProviderRaw != nil {
+ val, err := ctx.LoadModule(iss.Challenges.DNS, "ProviderRaw")
if err != nil {
return fmt.Errorf("loading DNS provider module: %v", err)
}
@@ -104,32 +106,32 @@ func (m *ACMEIssuer) Provision(ctx caddy.Context) error {
// acmez.Solver type, so we use it directly. The user must set environment
// variables to configure it. Remove this shim once a sufficient number of
// DNS providers are implemented for the libdns APIs instead.
- m.Challenges.DNS.solver = deprecatedProvider
+ iss.Challenges.DNS.solver = deprecatedProvider
} else {
- m.Challenges.DNS.solver = &certmagic.DNS01Solver{
+ iss.Challenges.DNS.solver = &certmagic.DNS01Solver{
DNSProvider: val.(certmagic.ACMEDNSProvider),
- TTL: time.Duration(m.Challenges.DNS.TTL),
- PropagationTimeout: time.Duration(m.Challenges.DNS.PropagationTimeout),
+ TTL: time.Duration(iss.Challenges.DNS.TTL),
+ PropagationTimeout: time.Duration(iss.Challenges.DNS.PropagationTimeout),
}
}
}
// add any custom CAs to trust store
- if len(m.TrustedRootsPEMFiles) > 0 {
- m.rootPool = x509.NewCertPool()
- for _, pemFile := range m.TrustedRootsPEMFiles {
+ if len(iss.TrustedRootsPEMFiles) > 0 {
+ iss.rootPool = x509.NewCertPool()
+ for _, pemFile := range iss.TrustedRootsPEMFiles {
pemData, err := ioutil.ReadFile(pemFile)
if err != nil {
return fmt.Errorf("loading trusted root CA's PEM file: %s: %v", pemFile, err)
}
- if !m.rootPool.AppendCertsFromPEM(pemData) {
+ if !iss.rootPool.AppendCertsFromPEM(pemData) {
return fmt.Errorf("unable to add %s to trust pool: %v", pemFile, err)
}
}
}
var err error
- m.template, err = m.makeIssuerTemplate()
+ iss.template, err = iss.makeIssuerTemplate()
if err != nil {
return err
}
@@ -137,30 +139,30 @@ func (m *ACMEIssuer) Provision(ctx caddy.Context) error {
return nil
}
-func (m *ACMEIssuer) makeIssuerTemplate() (certmagic.ACMEManager, error) {
+func (iss *ACMEIssuer) makeIssuerTemplate() (certmagic.ACMEManager, error) {
template := certmagic.ACMEManager{
- CA: m.CA,
- TestCA: m.TestCA,
- Email: m.Email,
- CertObtainTimeout: time.Duration(m.ACMETimeout),
- TrustedRoots: m.rootPool,
- ExternalAccount: m.ExternalAccount,
- Logger: m.logger,
+ CA: iss.CA,
+ TestCA: iss.TestCA,
+ Email: iss.Email,
+ CertObtainTimeout: time.Duration(iss.ACMETimeout),
+ TrustedRoots: iss.rootPool,
+ ExternalAccount: iss.ExternalAccount,
+ Logger: iss.logger,
}
- if m.Challenges != nil {
- if m.Challenges.HTTP != nil {
- template.DisableHTTPChallenge = m.Challenges.HTTP.Disabled
- template.AltHTTPPort = m.Challenges.HTTP.AlternatePort
+ if iss.Challenges != nil {
+ if iss.Challenges.HTTP != nil {
+ template.DisableHTTPChallenge = iss.Challenges.HTTP.Disabled
+ template.AltHTTPPort = iss.Challenges.HTTP.AlternatePort
}
- if m.Challenges.TLSALPN != nil {
- template.DisableTLSALPNChallenge = m.Challenges.TLSALPN.Disabled
- template.AltTLSALPNPort = m.Challenges.TLSALPN.AlternatePort
+ if iss.Challenges.TLSALPN != nil {
+ template.DisableTLSALPNChallenge = iss.Challenges.TLSALPN.Disabled
+ template.AltTLSALPNPort = iss.Challenges.TLSALPN.AlternatePort
}
- if m.Challenges.DNS != nil {
- template.DNS01Solver = m.Challenges.DNS.solver
+ if iss.Challenges.DNS != nil {
+ template.DNS01Solver = iss.Challenges.DNS.solver
}
- template.ListenHost = m.Challenges.BindHost
+ template.ListenHost = iss.Challenges.BindHost
}
return template, nil
@@ -170,8 +172,8 @@ func (m *ACMEIssuer) makeIssuerTemplate() (certmagic.ACMEManager, error) {
// This is required because ACME needs values from the config in
// order to solve the challenges during issuance. This implements
// the ConfigSetter interface.
-func (m *ACMEIssuer) SetConfig(cfg *certmagic.Config) {
- m.magic = cfg
+func (iss *ACMEIssuer) SetConfig(cfg *certmagic.Config) {
+ iss.magic = cfg
}
// TODO: I kind of hate how each call to these methods needs to
@@ -179,23 +181,147 @@ func (m *ACMEIssuer) SetConfig(cfg *certmagic.Config) {
// we find the right place to do that just once and then re-use?
// PreCheck implements the certmagic.PreChecker interface.
-func (m *ACMEIssuer) PreCheck(ctx context.Context, names []string, interactive bool) error {
- return certmagic.NewACMEManager(m.magic, m.template).PreCheck(ctx, names, interactive)
+func (iss *ACMEIssuer) PreCheck(ctx context.Context, names []string, interactive bool) error {
+ return certmagic.NewACMEManager(iss.magic, iss.template).PreCheck(ctx, names, interactive)
}
// Issue obtains a certificate for the given csr.
-func (m *ACMEIssuer) Issue(ctx context.Context, csr *x509.CertificateRequest) (*certmagic.IssuedCertificate, error) {
- return certmagic.NewACMEManager(m.magic, m.template).Issue(ctx, csr)
+func (iss *ACMEIssuer) Issue(ctx context.Context, csr *x509.CertificateRequest) (*certmagic.IssuedCertificate, error) {
+ return certmagic.NewACMEManager(iss.magic, iss.template).Issue(ctx, csr)
}
// IssuerKey returns the unique issuer key for the configured CA endpoint.
-func (m *ACMEIssuer) IssuerKey() string {
- return certmagic.NewACMEManager(m.magic, m.template).IssuerKey()
+func (iss *ACMEIssuer) IssuerKey() string {
+ return certmagic.NewACMEManager(iss.magic, iss.template).IssuerKey()
}
// Revoke revokes the given certificate.
-func (m *ACMEIssuer) Revoke(ctx context.Context, cert certmagic.CertificateResource, reason int) error {
- return certmagic.NewACMEManager(m.magic, m.template).Revoke(ctx, cert, reason)
+func (iss *ACMEIssuer) Revoke(ctx context.Context, cert certmagic.CertificateResource, reason int) error {
+ return certmagic.NewACMEManager(iss.magic, iss.template).Revoke(ctx, cert, reason)
+}
+
+// GetACMEIssuer returns iss. This is useful when other types embed ACMEIssuer, because
+// type-asserting them to *ACMEIssuer will fail, but type-asserting them to an interface
+// with only this method will succeed, and will still allow the embedded ACMEIssuer
+// to be accessed and manipulated.
+func (iss *ACMEIssuer) GetACMEIssuer() *ACMEIssuer { return iss }
+
+// UnmarshalCaddyfile deserializes Caddyfile tokens into iss.
+//
+// ... acme {
+// dir <directory_url>
+// test_dir <test_directory_url>
+// email <email>
+// timeout <duration>
+// disable_http_challenge
+// disable_tlsalpn_challenge
+// alt_http_port <port>
+// alt_tlsalpn_port <port>
+// eab <key_id> <mac_key>
+// trusted_roots <pem_files...>
+// }
+//
+func (iss *ACMEIssuer) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
+ for d.Next() {
+ for nesting := d.Nesting(); d.NextBlock(nesting); {
+ switch d.Val() {
+ case "dir":
+ if !d.AllArgs(&iss.CA) {
+ return d.ArgErr()
+ }
+
+ case "test_dir":
+ if !d.AllArgs(&iss.TestCA) {
+ return d.ArgErr()
+ }
+
+ case "email":
+ if !d.AllArgs(&iss.Email) {
+ return d.ArgErr()
+ }
+
+ case "timeout":
+ var timeoutStr string
+ if !d.AllArgs(&timeoutStr) {
+ return d.ArgErr()
+ }
+ timeout, err := caddy.ParseDuration(timeoutStr)
+ if err != nil {
+ return d.Errf("invalid timeout duration %s: %v", timeoutStr, err)
+ }
+ iss.ACMETimeout = caddy.Duration(timeout)
+
+ case "disable_http_challenge":
+ if d.NextArg() {
+ return d.ArgErr()
+ }
+ if iss.Challenges == nil {
+ iss.Challenges = new(ChallengesConfig)
+ }
+ if iss.Challenges.HTTP == nil {
+ iss.Challenges.HTTP = new(HTTPChallengeConfig)
+ }
+ iss.Challenges.HTTP.Disabled = true
+
+ case "disable_tlsalpn_challenge":
+ if d.NextArg() {
+ return d.ArgErr()
+ }
+ if iss.Challenges == nil {
+ iss.Challenges = new(ChallengesConfig)
+ }
+ if iss.Challenges.TLSALPN == nil {
+ iss.Challenges.TLSALPN = new(TLSALPNChallengeConfig)
+ }
+ iss.Challenges.TLSALPN.Disabled = true
+
+ case "alt_http_port":
+ if !d.NextArg() {
+ return d.ArgErr()
+ }
+ port, err := strconv.Atoi(d.Val())
+ if err != nil {
+ return d.Errf("invalid port %s: %v", d.Val(), err)
+ }
+ if iss.Challenges == nil {
+ iss.Challenges = new(ChallengesConfig)
+ }
+ if iss.Challenges.HTTP == nil {
+ iss.Challenges.HTTP = new(HTTPChallengeConfig)
+ }
+ iss.Challenges.HTTP.AlternatePort = port
+
+ case "alt_tlsalpn_port":
+ if !d.NextArg() {
+ return d.ArgErr()
+ }
+ port, err := strconv.Atoi(d.Val())
+ if err != nil {
+ return d.Errf("invalid port %s: %v", d.Val(), err)
+ }
+ if iss.Challenges == nil {
+ iss.Challenges = new(ChallengesConfig)
+ }
+ if iss.Challenges.TLSALPN == nil {
+ iss.Challenges.TLSALPN = new(TLSALPNChallengeConfig)
+ }
+ iss.Challenges.TLSALPN.AlternatePort = port
+
+ case "eab":
+ iss.ExternalAccount = new(acme.EAB)
+ if !d.AllArgs(&iss.ExternalAccount.KeyID, &iss.ExternalAccount.MACKey) {
+ return d.ArgErr()
+ }
+
+ case "trusted_roots":
+ iss.TrustedRootsPEMFiles = d.RemainingArgs()
+
+ default:
+ return d.Errf("unrecognized ACME issuer property: %s", d.Val())
+ }
+ }
+ }
+ return nil
}
// onDemandAskRequest makes a request to the ask URL
@@ -228,9 +354,10 @@ func onDemandAskRequest(ask string, name string) error {
// Interface guards
var (
- _ certmagic.PreChecker = (*ACMEIssuer)(nil)
- _ certmagic.Issuer = (*ACMEIssuer)(nil)
- _ certmagic.Revoker = (*ACMEIssuer)(nil)
- _ caddy.Provisioner = (*ACMEIssuer)(nil)
- _ ConfigSetter = (*ACMEIssuer)(nil)
+ _ certmagic.PreChecker = (*ACMEIssuer)(nil)
+ _ certmagic.Issuer = (*ACMEIssuer)(nil)
+ _ certmagic.Revoker = (*ACMEIssuer)(nil)
+ _ caddy.Provisioner = (*ACMEIssuer)(nil)
+ _ ConfigSetter = (*ACMEIssuer)(nil)
+ _ caddyfile.Unmarshaler = (*ACMEIssuer)(nil)
)
diff --git a/modules/caddytls/internalissuer.go b/modules/caddytls/internalissuer.go
index ca43bf8..d70b8ca 100644
--- a/modules/caddytls/internalissuer.go
+++ b/modules/caddytls/internalissuer.go
@@ -23,6 +23,7 @@ import (
"time"
"github.com/caddyserver/caddy/v2"
+ "github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
"github.com/caddyserver/caddy/v2/modules/caddypki"
"github.com/caddyserver/certmagic"
"github.com/smallstep/certificates/authority/provisioner"
@@ -63,25 +64,25 @@ func (InternalIssuer) CaddyModule() caddy.ModuleInfo {
}
// Provision sets up the issuer.
-func (li *InternalIssuer) Provision(ctx caddy.Context) error {
+func (iss *InternalIssuer) Provision(ctx caddy.Context) error {
// get a reference to the configured CA
appModule, err := ctx.App("pki")
if err != nil {
return err
}
pkiApp := appModule.(*caddypki.PKI)
- if li.CA == "" {
- li.CA = caddypki.DefaultCAID
+ if iss.CA == "" {
+ iss.CA = caddypki.DefaultCAID
}
- ca, ok := pkiApp.CAs[li.CA]
+ ca, ok := pkiApp.CAs[iss.CA]
if !ok {
- return fmt.Errorf("no certificate authority configured with id: %s", li.CA)
+ return fmt.Errorf("no certificate authority configured with id: %s", iss.CA)
}
- li.ca = ca
+ iss.ca = ca
// set any other default values
- if li.Lifetime == 0 {
- li.Lifetime = caddy.Duration(defaultInternalCertLifetime)
+ if iss.Lifetime == 0 {
+ iss.Lifetime = caddy.Duration(defaultInternalCertLifetime)
}
return nil
@@ -89,38 +90,38 @@ func (li *InternalIssuer) Provision(ctx caddy.Context) error {
// IssuerKey returns the unique issuer key for the
// confgured CA endpoint.
-func (li InternalIssuer) IssuerKey() string {
- return li.ca.ID()
+func (iss InternalIssuer) IssuerKey() string {
+ return iss.ca.ID()
}
// Issue issues a certificate to satisfy the CSR.
-func (li InternalIssuer) Issue(ctx context.Context, csr *x509.CertificateRequest) (*certmagic.IssuedCertificate, error) {
+func (iss InternalIssuer) Issue(ctx context.Context, csr *x509.CertificateRequest) (*certmagic.IssuedCertificate, error) {
// prepare the signing authority
authCfg := caddypki.AuthorityConfig{
- SignWithRoot: li.SignWithRoot,
+ SignWithRoot: iss.SignWithRoot,
}
- auth, err := li.ca.NewAuthority(authCfg)
+ auth, err := iss.ca.NewAuthority(authCfg)
if err != nil {
return nil, err
}
// get the cert (public key) that will be used for signing
var issuerCert *x509.Certificate
- if li.SignWithRoot {
- issuerCert = li.ca.RootCertificate()
+ if iss.SignWithRoot {
+ issuerCert = iss.ca.RootCertificate()
} else {
- issuerCert = li.ca.IntermediateCertificate()
+ issuerCert = iss.ca.IntermediateCertificate()
}
// ensure issued certificate does not expire later than its issuer
- lifetime := time.Duration(li.Lifetime)
+ lifetime := time.Duration(iss.Lifetime)
if time.Now().Add(lifetime).After(issuerCert.NotAfter) {
// TODO: log this
lifetime = issuerCert.NotAfter.Sub(time.Now())
}
certChain, err := auth.Sign(csr, provisioner.Options{},
- profileDefaultDuration(li.Lifetime),
+ profileDefaultDuration(iss.Lifetime),
)
if err != nil {
return nil, err
@@ -139,6 +140,26 @@ func (li InternalIssuer) Issue(ctx context.Context, csr *x509.CertificateRequest
}, nil
}
+// UnmarshalCaddyfile deserializes Caddyfile tokens into iss.
+//
+// ... internal {
+// ca <name>
+// }
+//
+func (iss *InternalIssuer) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
+ for d.Next() {
+ for d.NextBlock(0) {
+ switch d.Val() {
+ case "ca":
+ if !d.AllArgs(&iss.CA) {
+ return d.ArgErr()
+ }
+ }
+ }
+ }
+ return nil
+}
+
// profileDefaultDuration is a wrapper against x509util.WithOption to conform
// the SignOption interface.
//
diff --git a/modules/caddytls/tls.go b/modules/caddytls/tls.go
index 8178026..6a635d4 100644
--- a/modules/caddytls/tls.go
+++ b/modules/caddytls/tls.go
@@ -313,8 +313,10 @@ func (t *TLS) HandleHTTPChallenge(w http.ResponseWriter, r *http.Request) bool {
if ap.magic.Issuer == nil {
return false
}
- if am, ok := ap.magic.Issuer.(*ACMEIssuer); ok {
- return certmagic.NewACMEManager(am.magic, am.template).HandleHTTPChallenge(w, r)
+ type acmeCapable interface{ GetACMEIssuer() *ACMEIssuer }
+ if am, ok := ap.magic.Issuer.(acmeCapable); ok {
+ iss := am.GetACMEIssuer()
+ return certmagic.NewACMEManager(iss.magic, iss.template).HandleHTTPChallenge(w, r)
}
return false
}
diff --git a/modules/caddytls/zerosslissuer.go b/modules/caddytls/zerosslissuer.go
new file mode 100644
index 0000000..d0f4950
--- /dev/null
+++ b/modules/caddytls/zerosslissuer.go
@@ -0,0 +1,236 @@
+// Copyright 2015 Matthew Holt and The Caddy Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package caddytls
+
+import (
+ "context"
+ "crypto/x509"
+ "encoding/json"
+ "fmt"
+ "io"
+ "net/http"
+ "net/url"
+ "strings"
+ "sync"
+
+ "github.com/caddyserver/caddy/v2"
+ "github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
+ "github.com/caddyserver/certmagic"
+ "github.com/mholt/acmez/acme"
+ "go.uber.org/zap"
+)
+
+func init() {
+ caddy.RegisterModule(new(ZeroSSLIssuer))
+}
+
+// ZeroSSLIssuer makes an ACME manager
+// for managing certificates using ACME.
+type ZeroSSLIssuer struct {
+ *ACMEIssuer
+
+ // The API key (or "access key") for using the ZeroSSL API.
+ APIKey string `json:"api_key,omitempty"`
+
+ mu sync.Mutex
+ logger *zap.Logger
+}
+
+// CaddyModule returns the Caddy module information.
+func (*ZeroSSLIssuer) CaddyModule() caddy.ModuleInfo {
+ return caddy.ModuleInfo{
+ ID: "tls.issuance.zerossl",
+ New: func() caddy.Module { return new(ZeroSSLIssuer) },
+ }
+}
+
+// Provision sets up iss.
+func (iss *ZeroSSLIssuer) Provision(ctx caddy.Context) error {
+ iss.logger = ctx.Logger(iss)
+
+ if iss.ACMEIssuer == nil {
+ iss.ACMEIssuer = new(ACMEIssuer)
+ }
+ err := iss.ACMEIssuer.Provision(ctx)
+ if err != nil {
+ return err
+ }
+
+ return nil
+}
+
+func (iss *ZeroSSLIssuer) newAccountCallback(ctx context.Context, am *certmagic.ACMEManager, _ acme.Account) error {
+ if am.ExternalAccount != nil {
+ return nil
+ }
+ var err error
+ am.ExternalAccount, err = iss.generateEABCredentials(ctx)
+ return err
+}
+
+func (iss *ZeroSSLIssuer) generateEABCredentials(ctx context.Context) (*acme.EAB, error) {
+ var endpoint string
+ var body io.Reader
+
+ // there are two ways to generate EAB credentials: authenticated with
+ // their API key, or unauthenticated with their email address
+ switch {
+ case iss.APIKey != "":
+ apiKey := caddy.NewReplacer().ReplaceAll(iss.APIKey, "")
+ if apiKey == "" {
+ return nil, fmt.Errorf("missing API key: '%v'", iss.APIKey)
+ }
+ qs := url.Values{"access_key": []string{apiKey}}
+ endpoint = fmt.Sprintf("%s/eab-credentials?%s", zerosslAPIBase, qs.Encode())
+
+ case iss.Email != "":
+ email := caddy.NewReplacer().ReplaceAll(iss.Email, "")
+ if email == "" {
+ return nil, fmt.Errorf("missing email: '%v'", iss.Email)
+ }
+ endpoint = zerosslAPIBase + "/eab-credentials-email"
+ form := url.Values{"email": []string{email}}
+ body = strings.NewReader(form.Encode())
+
+ default:
+ return nil, fmt.Errorf("must configure either an API key or email address to use ZeroSSL without explicit EAB")
+ }
+
+ req, err := http.NewRequestWithContext(ctx, http.MethodPost, endpoint, body)
+ if err != nil {
+ return nil, fmt.Errorf("forming request: %v", err)
+ }
+ if body != nil {
+ req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+ }
+ req.Header.Set("User-Agent", certmagic.UserAgent)
+
+ resp, err := http.DefaultClient.Do(req)
+ if err != nil {
+ return nil, fmt.Errorf("performing EAB credentials request: %v", err)
+ }
+ defer resp.Body.Close()
+
+ var result struct {
+ Success bool `json:"success"`
+ Error struct {
+ Code int `json:"code"`
+ Type string `json:"type"`
+ } `json:"error"`
+ EABKID string `json:"eab_kid"`
+ EABHMACKey string `json:"eab_hmac_key"`
+ }
+ err = json.NewDecoder(resp.Body).Decode(&result)
+ if err != nil {
+ return nil, fmt.Errorf("decoding API response: %v", err)
+ }
+ if result.Error.Code != 0 {
+ return nil, fmt.Errorf("failed getting EAB credentials: HTTP %d: %s (code %d)",
+ resp.StatusCode, result.Error.Type, result.Error.Code)
+ }
+ if resp.StatusCode != http.StatusOK {
+ return nil, fmt.Errorf("failed getting EAB credentials: HTTP %d", resp.StatusCode)
+ }
+
+ iss.logger.Info("generated EAB credentials", zap.String("key_id", result.EABKID))
+
+ return &acme.EAB{
+ KeyID: result.EABKID,
+ MACKey: result.EABHMACKey,
+ }, nil
+}
+
+// initialize modifies the template for the underlying ACMEManager
+// values by setting the CA endpoint to the ZeroSSL directory and
+// setting the NewAccountFunc callback to one which allows us to
+// generate EAB credentials only if a new account is being made.
+// Since it modifies the stored template, its effect should only
+// be needed once, but it is fine to call it repeatedly.
+func (iss *ZeroSSLIssuer) initialize() {
+ iss.mu.Lock()
+ defer iss.mu.Unlock()
+ if iss.template.CA == "" {
+ iss.template.CA = zerosslACMEDirectory
+ }
+ if iss.template.NewAccountFunc == nil {
+ iss.template.NewAccountFunc = iss.newAccountCallback
+ }
+}
+
+// PreCheck implements the certmagic.PreChecker interface.
+func (iss *ZeroSSLIssuer) PreCheck(ctx context.Context, names []string, interactive bool) error {
+ iss.initialize()
+ return iss.ACMEIssuer.PreCheck(ctx, names, interactive)
+}
+
+// Issue obtains a certificate for the given csr.
+func (iss *ZeroSSLIssuer) Issue(ctx context.Context, csr *x509.CertificateRequest) (*certmagic.IssuedCertificate, error) {
+ iss.initialize()
+ return iss.ACMEIssuer.Issue(ctx, csr)
+}
+
+// IssuerKey returns the unique issuer key for the configured CA endpoint.
+func (iss *ZeroSSLIssuer) IssuerKey() string {
+ iss.initialize()
+ return iss.ACMEIssuer.IssuerKey()
+}
+
+// Revoke revokes the given certificate.
+func (iss *ZeroSSLIssuer) Revoke(ctx context.Context, cert certmagic.CertificateResource, reason int) error {
+ iss.initialize()
+ return iss.ACMEIssuer.Revoke(ctx, cert, reason)
+}
+
+// UnmarshalCaddyfile deserializes Caddyfile tokens into iss.
+//
+// ... zerossl <api_key> {
+// ...
+// }
+//
+// Any of the subdirectives for the ACME issuer can be used in the block.
+func (iss *ZeroSSLIssuer) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
+ for d.Next() {
+ if !d.AllArgs(&iss.APIKey) {
+ return d.ArgErr()
+ }
+
+ if iss.ACMEIssuer == nil {
+ iss.ACMEIssuer = new(ACMEIssuer)
+ }
+ err := iss.ACMEIssuer.UnmarshalCaddyfile(d.NewFromNextSegment())
+ if err != nil {
+ return err
+ }
+ }
+ return nil
+}
+
+const (
+ zerosslACMEDirectory = "https://acme.zerossl.com/v2/DV90"
+ zerosslAPIBase = "https://api.zerossl.com/acme"
+)
+
+// Interface guards
+var (
+ _ certmagic.PreChecker = (*ZeroSSLIssuer)(nil)
+ _ certmagic.Issuer = (*ZeroSSLIssuer)(nil)
+ _ certmagic.Revoker = (*ZeroSSLIssuer)(nil)
+ _ caddy.Provisioner = (*ZeroSSLIssuer)(nil)
+ _ ConfigSetter = (*ZeroSSLIssuer)(nil)
+
+ // a type which properly embeds an ACMEIssuer should implement
+ // this interface so it can be treated as an ACMEIssuer
+ _ interface{ GetACMEIssuer() *ACMEIssuer } = (*ZeroSSLIssuer)(nil)
+)