Initial commit of Storage, TLS, and automatic HTTPS implementations

1 files changed, 84 insertions, 0 deletions

diff --git a/modules/caddytls/acmemanager.go b/modules/caddytls/acmemanager.go
new file mode 100644
index 0000000..a7a460a
--- /dev/null
+++ b/modules/caddytls/acmemanager.go
@@ -0,0 +1,84 @@
+package caddytls
+
+import (
+	"encoding/json"
+	"fmt"
+
+	"github.com/go-acme/lego/certcrypto"
+
+	"bitbucket.org/lightcodelabs/caddy2"
+	"github.com/go-acme/lego/challenge"
+	"github.com/mholt/certmagic"
+)
+
+func init() {
+	caddy2.RegisterModule(caddy2.Module{
+		Name: "tls.management.acme",
+		New:  func() (interface{}, error) { return new(acmeManagerMaker), nil },
+	})
+}
+
+// ManagerMaker TODO: WIP...
+type ManagerMaker interface {
+	newManager(interactive bool) (certmagic.Manager, error)
+}
+
+// acmeManagerMaker makes an ACME manager
+// for managinig certificates using ACME.
+type acmeManagerMaker struct {
+	CA          string           `json:"ca,omitempty"`
+	Email       string           `json:"email,omitempty"`
+	RenewAhead  caddy2.Duration  `json:"renew_ahead,omitempty"`
+	KeyType     string           `json:"key_type,omitempty"`
+	ACMETimeout caddy2.Duration  `json:"acme_timeout,omitempty"`
+	MustStaple  bool             `json:"must_staple,omitempty"`
+	Challenges  ChallengesConfig `json:"challenges"`
+	OnDemand    *OnDemandConfig  `json:"on_demand,omitempty"`
+	Storage     json.RawMessage  `json:"storage,omitempty"`
+
+	storage certmagic.Storage
+	keyType certcrypto.KeyType
+}
+
+func (m *acmeManagerMaker) Provision() error {
+	m.setDefaults()
+
+	// DNS providers
+	if m.Challenges.DNS != nil {
+		val, err := caddy2.LoadModuleInline("provider", "tls.dns", m.Challenges.DNS)
+		if err != nil {
+			return fmt.Errorf("loading TLS storage module: %s", err)
+		}
+		m.Challenges.dns = val.(challenge.Provider)
+		m.Challenges.DNS = nil // allow GC to deallocate - TODO: Does this help?
+	}
+
+	// policy-specific storage implementation
+	if m.Storage != nil {
+		val, err := caddy2.LoadModuleInline("system", "caddy.storage", m.Storage)
+		if err != nil {
+			return fmt.Errorf("loading TLS storage module: %s", err)
+		}
+		cmStorage, err := val.(caddy2.StorageConverter).CertMagicStorage()
+		if err != nil {
+			return fmt.Errorf("creating TLS storage configuration: %v", err)
+		}
+		m.storage = cmStorage
+		m.Storage = nil // allow GC to deallocate - TODO: Does this help?
+	}
+
+	return nil
+}
+
+// setDefaults indiscriminately sets all the default values in m.
+func (m *acmeManagerMaker) setDefaults() {
+	m.CA = certmagic.LetsEncryptStagingCA // certmagic.Default.CA // TODO: When not testing, switch to production CA
+	m.Email = certmagic.Default.Email
+	m.RenewAhead = caddy2.Duration(certmagic.Default.RenewDurationBefore)
+	m.keyType = certmagic.Default.KeyType
+	m.storage = certmagic.Default.Storage
+}
+
+func (m *acmeManagerMaker) newManager(interactive bool) (certmagic.Manager, error) {
+	return nil, nil
+}