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package gmi
import (
"bufio"
"crypto/tls"
"net"
"net/url"
)
// Request represents a Gemini request.
type Request struct {
// URL specifies the URL being requested.
URL *url.URL
// For client requests, Host specifies the host on which the URL is sought.
// Host must contain a port.
// This field is ignored by the server.
Host string
// Certificate specifies the TLS certificate to use for the request.
// Request certificates take precedence over client certificates.
// This field is ignored by the server.
Certificate *tls.Certificate
// RemoteAddr allows servers and other software to record the network
// address that sent the request.
// This field is ignored by the client.
RemoteAddr net.Addr
// TLS allows servers and other software to record information about the TLS
// connection on which the request was received.
// This field is ignored by the client.
TLS tls.ConnectionState
}
// hostname returns the host without the port.
func hostname(host string) string {
hostname, _, err := net.SplitHostPort(host)
if err != nil {
return host
}
return hostname
}
// NewRequest returns a new request. The host is inferred from the provided URL.
func NewRequest(rawurl string) (*Request, error) {
u, err := url.Parse(rawurl)
if err != nil {
return nil, err
}
// If there is no port, use the default port of 1965
host := u.Host
if u.Port() == "" {
host += ":1965"
}
return &Request{
Host: host,
URL: u,
}, nil
}
// NewRequestTo returns a new request for the provided URL to the provided host.
// The host must contain a port.
func NewRequestTo(rawurl, host string) (*Request, error) {
u, err := url.Parse(rawurl)
if err != nil {
return nil, err
}
return &Request{
Host: host,
URL: u,
}, nil
}
// write writes the Gemini request to the provided buffered writer.
func (r *Request) write(w *bufio.Writer) error {
url := r.URL.String()
// User is invalid
if r.URL.User != nil || len(url) > 1024 {
return ErrInvalidURL
}
if _, err := w.WriteString(url); err != nil {
return err
}
if _, err := w.Write(crlf); err != nil {
return err
}
return nil
}
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