acme: add external account binding support.
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Ludovic Fernandez
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@ -10,7 +10,7 @@ You can configure Traefik to use an ACME provider (like Let's Encrypt) for autom
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Use Let's Encrypt staging server with the [`caServer`](#caserver) configuration option
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when experimenting to avoid hitting this limit too fast.
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## Certificate Resolvers
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Traefik requires you to define "Certificate Resolvers" in the [static configuration](../getting-started/configuration-overview.md#the-static-configuration),
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@ -408,6 +408,35 @@ certificatesResolvers:
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[ACME V2](https://community.letsencrypt.org/t/acme-v2-and-wildcard-certificate-support-is-live/55579) supports wildcard certificates.
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As described in [Let's Encrypt's post](https://community.letsencrypt.org/t/staging-endpoint-for-acme-v2/49605) wildcard certificates can only be generated through a [`DNS-01` challenge](#dnschallenge).
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## External Account Binding
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- `kid`: Key identifier from External CA
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- `hmacEncoded`: HMAC key from External CA, should be in Base64 URL Encoding without padding format
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```toml tab="File (TOML)"
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[certificatesResolvers.myresolver.acme]
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# ...
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[certificatesResolvers.myresolver.acme.eab]
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kid = "abc-keyID-xyz"
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hmacEncoded = "abc-hmac-xyz"
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```
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```yaml tab="File (YAML)"
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certificatesResolvers:
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myresolver:
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acme:
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# ...
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eab:
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kid: abc-keyID-xyz
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hmacEncoded: abc-hmac-xyz
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```
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```bash tab="CLI"
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# ...
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--certificatesresolvers.myresolver.acme.eab.kid=abc-keyID-xyz
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--certificatesresolvers.myresolver.acme.eab.hmacencoded=abc-hmac-xyz
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```
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## More Configuration
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### `caServer`
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@ -69,6 +69,12 @@ Use a DNS-01 based challenge provider rather than HTTPS.
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`--certificatesresolvers.<name>.acme.dnschallenge.resolvers`:
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Use following DNS servers to resolve the FQDN authority.
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`--certificatesresolvers.<name>.acme.eab.hmacencoded`:
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Base64 encoded HMAC key from External CA.
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`--certificatesresolvers.<name>.acme.eab.kid`:
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Key identifier from External CA.
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`--certificatesresolvers.<name>.acme.email`:
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Email address used for registration.
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@ -69,6 +69,12 @@ Use a DNS-01 based challenge provider rather than HTTPS.
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`TRAEFIK_CERTIFICATESRESOLVERS_<NAME>_ACME_DNSCHALLENGE_RESOLVERS`:
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Use following DNS servers to resolve the FQDN authority.
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`TRAEFIK_CERTIFICATESRESOLVERS_<NAME>_ACME_EAB_HMACENCODED`:
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Base64 encoded HMAC key from External CA.
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`TRAEFIK_CERTIFICATESRESOLVERS_<NAME>_ACME_EAB_KID`:
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Key identifier from External CA.
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`TRAEFIK_CERTIFICATESRESOLVERS_<NAME>_ACME_EMAIL`:
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Email address used for registration.
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@ -103,7 +103,7 @@
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namespaces = ["foobar", "foobar"]
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labelSelector = "foobar"
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ingressClass = "foobar"
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throttleDuration = "10s"
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throttleDuration = "42s"
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[providers.kubernetesIngress.ingressEndpoint]
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ip = "foobar"
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hostname = "foobar"
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@ -251,9 +251,6 @@
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addEntryPointsLabels = true
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addServicesLabels = true
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[pilot]
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token = "foobar"
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[ping]
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entryPoint = "foobar"
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manualRouting = true
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@ -343,6 +340,9 @@
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preferredChain = "foobar"
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storage = "foobar"
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keyType = "foobar"
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[certificatesResolvers.CertificateResolver0.acme.eab]
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kid = "foobar"
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hmacEncoded = "foobar"
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[certificatesResolvers.CertificateResolver0.acme.dnsChallenge]
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provider = "foobar"
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delayBeforeCheck = 42
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@ -358,6 +358,9 @@
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preferredChain = "foobar"
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storage = "foobar"
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keyType = "foobar"
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[certificatesResolvers.CertificateResolver1.acme.eab]
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kid = "foobar"
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hmacEncoded = "foobar"
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[certificatesResolvers.CertificateResolver1.acme.dnsChallenge]
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provider = "foobar"
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delayBeforeCheck = 42
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@ -367,6 +370,9 @@
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entryPoint = "foobar"
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[certificatesResolvers.CertificateResolver1.acme.tlsChallenge]
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[pilot]
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token = "foobar"
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[experimental]
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[experimental.plugins]
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[experimental.plugins.Descriptor0]
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@ -270,8 +270,6 @@ metrics:
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password: foobar
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addEntryPointsLabels: true
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addServicesLabels: true
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pilot:
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token: foobar
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ping:
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entryPoint: foobar
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manualRouting: true
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@ -358,6 +356,9 @@ certificatesResolvers:
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preferredChain: foobar
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storage: foobar
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keyType: foobar
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eab:
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kid: foobar
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hmacEncoded: foobar
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dnsChallenge:
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provider: foobar
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delayBeforeCheck: 42
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@ -375,6 +376,9 @@ certificatesResolvers:
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preferredChain: foobar
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storage: foobar
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keyType: foobar
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eab:
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kid: foobar
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hmacEncoded: foobar
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dnsChallenge:
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provider: foobar
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delayBeforeCheck: 42
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@ -385,6 +389,8 @@ certificatesResolvers:
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httpChallenge:
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entryPoint: foobar
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tlsChallenge: {}
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pilot:
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token: foobar
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experimental:
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plugins:
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Descriptor0:
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@ -33,14 +33,16 @@ var oscpMustStaple = false
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// Configuration holds ACME configuration provided by users.
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type Configuration struct {
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Email string `description:"Email address used for registration." json:"email,omitempty" toml:"email,omitempty" yaml:"email,omitempty"`
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CAServer string `description:"CA server to use." json:"caServer,omitempty" toml:"caServer,omitempty" yaml:"caServer,omitempty"`
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PreferredChain string `description:"Preferred chain to use." json:"preferredChain,omitempty" toml:"preferredChain,omitempty" yaml:"preferredChain,omitempty" export:"true"`
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Storage string `description:"Storage to use." json:"storage,omitempty" toml:"storage,omitempty" yaml:"storage,omitempty" export:"true"`
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KeyType string `description:"KeyType used for generating certificate private key. Allow value 'EC256', 'EC384', 'RSA2048', 'RSA4096', 'RSA8192'." json:"keyType,omitempty" toml:"keyType,omitempty" yaml:"keyType,omitempty" export:"true"`
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DNSChallenge *DNSChallenge `description:"Activate DNS-01 Challenge." json:"dnsChallenge,omitempty" toml:"dnsChallenge,omitempty" yaml:"dnsChallenge,omitempty" label:"allowEmpty" file:"allowEmpty" export:"true"`
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HTTPChallenge *HTTPChallenge `description:"Activate HTTP-01 Challenge." json:"httpChallenge,omitempty" toml:"httpChallenge,omitempty" yaml:"httpChallenge,omitempty" label:"allowEmpty" file:"allowEmpty" export:"true"`
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TLSChallenge *TLSChallenge `description:"Activate TLS-ALPN-01 Challenge." json:"tlsChallenge,omitempty" toml:"tlsChallenge,omitempty" yaml:"tlsChallenge,omitempty" label:"allowEmpty" file:"allowEmpty" export:"true"`
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Email string `description:"Email address used for registration." json:"email,omitempty" toml:"email,omitempty" yaml:"email,omitempty"`
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CAServer string `description:"CA server to use." json:"caServer,omitempty" toml:"caServer,omitempty" yaml:"caServer,omitempty"`
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PreferredChain string `description:"Preferred chain to use." json:"preferredChain,omitempty" toml:"preferredChain,omitempty" yaml:"preferredChain,omitempty" export:"true"`
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Storage string `description:"Storage to use." json:"storage,omitempty" toml:"storage,omitempty" yaml:"storage,omitempty" export:"true"`
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KeyType string `description:"KeyType used for generating certificate private key. Allow value 'EC256', 'EC384', 'RSA2048', 'RSA4096', 'RSA8192'." json:"keyType,omitempty" toml:"keyType,omitempty" yaml:"keyType,omitempty" export:"true"`
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EAB *EAB `description:"External Account Binding to use." json:"eab,omitempty" toml:"eab,omitempty" yaml:"eab,omitempty"`
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DNSChallenge *DNSChallenge `description:"Activate DNS-01 Challenge." json:"dnsChallenge,omitempty" toml:"dnsChallenge,omitempty" yaml:"dnsChallenge,omitempty" label:"allowEmpty" file:"allowEmpty" export:"true"`
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HTTPChallenge *HTTPChallenge `description:"Activate HTTP-01 Challenge." json:"httpChallenge,omitempty" toml:"httpChallenge,omitempty" yaml:"httpChallenge,omitempty" label:"allowEmpty" file:"allowEmpty" export:"true"`
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TLSChallenge *TLSChallenge `description:"Activate TLS-ALPN-01 Challenge." json:"tlsChallenge,omitempty" toml:"tlsChallenge,omitempty" yaml:"tlsChallenge,omitempty" label:"allowEmpty" file:"allowEmpty" export:"true"`
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}
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// SetDefaults sets the default values.
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@ -63,7 +65,13 @@ type Certificate struct {
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Key []byte `json:"key,omitempty" toml:"key,omitempty" yaml:"key,omitempty"`
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}
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// DNSChallenge contains DNS challenge Configuration.
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// EAB contains External Account Binding configuration.
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type EAB struct {
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Kid string `description:"Key identifier from External CA." json:"kid,omitempty" toml:"kid,omitempty" yaml:"kid,omitempty"`
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HmacEncoded string `description:"Base64 encoded HMAC key from External CA." json:"hmacEncoded,omitempty" toml:"hmacEncoded,omitempty" yaml:"hmacEncoded,omitempty"`
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}
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// DNSChallenge contains DNS challenge configuration.
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type DNSChallenge struct {
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Provider string `description:"Use a DNS-01 based challenge provider rather than HTTPS." json:"provider,omitempty" toml:"provider,omitempty" yaml:"provider,omitempty" export:"true"`
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DelayBeforeCheck ptypes.Duration `description:"Assume DNS propagates after a delay in seconds rather than finding and querying nameservers." json:"delayBeforeCheck,omitempty" toml:"delayBeforeCheck,omitempty" yaml:"delayBeforeCheck,omitempty" export:"true"`
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@ -71,12 +79,12 @@ type DNSChallenge struct {
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DisablePropagationCheck bool `description:"Disable the DNS propagation checks before notifying ACME that the DNS challenge is ready. [not recommended]" json:"disablePropagationCheck,omitempty" toml:"disablePropagationCheck,omitempty" yaml:"disablePropagationCheck,omitempty" export:"true"`
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}
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// HTTPChallenge contains HTTP challenge Configuration.
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// HTTPChallenge contains HTTP challenge configuration.
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type HTTPChallenge struct {
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EntryPoint string `description:"HTTP challenge EntryPoint" json:"entryPoint,omitempty" toml:"entryPoint,omitempty" yaml:"entryPoint,omitempty" export:"true"`
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}
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// TLSChallenge contains TLS challenge Configuration.
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// TLSChallenge contains TLS challenge configuration.
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type TLSChallenge struct{}
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// Provider holds configurations of the provider.
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@ -233,9 +241,7 @@ func (p *Provider) getClient() (*lego.Client, error) {
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// New users will need to register; be sure to save it
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if account.GetRegistration() == nil {
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logger.Info("Register...")
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reg, errR := client.Registration.Register(registration.RegisterOptions{TermsOfServiceAgreed: true})
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reg, errR := p.register(ctx, client)
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if errR != nil {
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return nil, errR
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}
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@ -324,6 +330,22 @@ func (p *Provider) initAccount(ctx context.Context) (*Account, error) {
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return p.account, nil
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}
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func (p *Provider) register(ctx context.Context, client *lego.Client) (*registration.Resource, error) {
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logger := log.FromContext(ctx)
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if p.EAB != nil {
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logger.Info("Register with external account binding...")
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eabOptions := registration.RegisterEABOptions{TermsOfServiceAgreed: true, Kid: p.EAB.Kid, HmacEncoded: p.EAB.HmacEncoded}
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return client.Registration.RegisterWithExternalAccountBinding(eabOptions)
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}
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logger.Info("Register...")
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return client.Registration.Register(registration.RegisterOptions{TermsOfServiceAgreed: true})
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}
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func (p *Provider) resolveDomains(ctx context.Context, domains []string, tlsStore string) {
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if len(domains) == 0 {
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log.FromContext(ctx).Debug("No domain parsed in provider ACME")
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