Rename repository to go-gemini

1 files changed, 98 insertions, 0 deletions

diff --git a/gemini.go b/gemini.go
new file mode 100644
index 0000000..f03fd82
--- /dev/null
+++ b/gemini.go
@@ -0,0 +1,98 @@
+package gemini
+
+import (
+	"crypto/tls"
+	"crypto/x509"
+	"errors"
+	"sync"
+	"time"
+)
+
+// Status codes.
+const (
+	StatusInput                    = 10
+	StatusSensitiveInput           = 11
+	StatusSuccess                  = 20
+	StatusRedirect                 = 30
+	StatusRedirectPermanent        = 31
+	StatusTemporaryFailure         = 40
+	StatusServerUnavailable        = 41
+	StatusCGIError                 = 42
+	StatusProxyError               = 43
+	StatusSlowDown                 = 44
+	StatusPermanentFailure         = 50
+	StatusNotFound                 = 51
+	StatusGone                     = 52
+	StatusProxyRequestRefused      = 53
+	StatusBadRequest               = 59
+	StatusCertificateRequired      = 60
+	StatusCertificateNotAuthorized = 61
+	StatusCertificateNotValid      = 62
+)
+
+// Status code categories.
+const (
+	StatusClassInput               = 1
+	StatusClassSuccess             = 2
+	StatusClassRedirect            = 3
+	StatusClassTemporaryFailure    = 4
+	StatusClassPermanentFailure    = 5
+	StatusClassCertificateRequired = 6
+)
+
+// Errors.
+var (
+	ErrInvalidURL            = errors.New("gemini: invalid URL")
+	ErrInvalidResponse       = errors.New("gemini: invalid response")
+	ErrCertificateUnknown    = errors.New("gemini: unknown certificate")
+	ErrCertificateExpired    = errors.New("gemini: certificate expired")
+	ErrCertificateNotTrusted = errors.New("gemini: certificate is not trusted")
+	ErrNotAFile              = errors.New("gemini: not a file")
+	ErrBodyNotAllowed        = errors.New("gemini: response status code does not allow for body")
+)
+
+// DefaultClient is the default client. It is used by Send.
+//
+// On the first request, DefaultClient will load the default list of known hosts.
+var DefaultClient Client
+
+var (
+	crlf = []byte("\r\n")
+)
+
+func init() {
+	DefaultClient.TrustCertificate = func(hostname string, cert *x509.Certificate, knownHosts *KnownHosts) error {
+		// Load the hosts only once. This is so that the hosts don't have to be loaded
+		// for those using their own clients.
+		setupDefaultClientOnce.Do(setupDefaultClient)
+		return knownHosts.Lookup(hostname, cert)
+	}
+	DefaultClient.GetCertificate = func(hostname string, store *CertificateStore) *tls.Certificate {
+		// If the certificate is in the store, return it
+		if cert, err := store.Lookup(hostname); err == nil {
+			return cert
+		}
+		// Otherwise, generate a certificate
+		duration := time.Hour
+		cert, err := NewCertificate(hostname, duration)
+		if err != nil {
+			return nil
+		}
+		// Store and return the certificate
+		store.Add(hostname, cert)
+		return &cert
+	}
+}
+
+var setupDefaultClientOnce sync.Once
+
+func setupDefaultClient() {
+	DefaultClient.KnownHosts.LoadDefault()
+}
+
+// Send sends a Gemini request and returns a Gemini response.
+//
+// Send is a wrapper around DefaultClient.Send.
+func Send(req *Request) (*Response, error) {
+	return DefaultClient.Send(req)
+}