65 lines
1.9 KiB
Go
65 lines
1.9 KiB
Go
package gemini
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import (
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"crypto/tls"
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"crypto/x509"
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"errors"
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"sync"
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"time"
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)
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var crlf = []byte("\r\n")
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// Errors.
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var (
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ErrInvalidURL = errors.New("gemini: invalid URL")
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ErrInvalidResponse = errors.New("gemini: invalid response")
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ErrCertificateUnknown = errors.New("gemini: unknown certificate")
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ErrCertificateExpired = errors.New("gemini: certificate expired")
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ErrCertificateNotTrusted = errors.New("gemini: certificate is not trusted")
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ErrNotAFile = errors.New("gemini: not a file")
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ErrNotAGeminiURL = errors.New("gemini: not a Gemini URL")
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ErrBodyNotAllowed = errors.New("gemini: response status code does not allow for body")
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ErrTooManyRedirects = errors.New("gemini: too many redirects")
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)
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// DefaultClient is the default client. It is used by Get and Do.
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//
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// On the first request, DefaultClient loads the default list of known hosts.
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var DefaultClient Client
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// Get performs a Gemini request for the given url.
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//
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// Get is a wrapper around DefaultClient.Get.
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func Get(url string) (*Response, error) {
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return DefaultClient.Get(url)
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}
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// Do performs a Gemini request and returns a Gemini response.
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//
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// Do is a wrapper around DefaultClient.Do.
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func Do(req *Request) (*Response, error) {
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return DefaultClient.Do(req)
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}
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var defaultClientOnce sync.Once
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func init() {
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DefaultClient.TrustCertificate = func(hostname string, cert *x509.Certificate, knownHosts *KnownHosts) error {
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defaultClientOnce.Do(func() { knownHosts.LoadDefault() })
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return knownHosts.Lookup(hostname, cert)
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}
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DefaultClient.GetCertificate = func(req *Request, store *ClientCertificateStore) *tls.Certificate {
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if cert, err := store.Lookup(req.URL.Hostname(), req.URL.Path); err == nil {
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return cert
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}
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duration := time.Hour
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cert, err := NewCertificate("", duration)
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if err != nil {
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return nil
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}
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store.Add(req.URL.Hostname()+req.URL.Path, cert)
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return &cert
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}
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}
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