cloudflared-mirror/cmd/cloudflared/access/carrier.go

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package access
import (
"net/http"
"net/url"
"strings"
"github.com/cloudflare/cloudflared/carrier"
"github.com/cloudflare/cloudflared/cmd/cloudflared/config"
"github.com/cloudflare/cloudflared/validation"
"github.com/pkg/errors"
cli "gopkg.in/urfave/cli.v2"
)
// ssh will start a WS proxy server for server mode
// or copy from stdin/stdout for client mode
// useful for proxying other protocols (like ssh) over websockets
// (which you can put Access in front of)
func ssh(c *cli.Context) error {
hostname, err := validation.ValidateHostname(c.String("hostname"))
if err != nil || c.String("hostname") == "" {
return cli.ShowCommandHelp(c, "ssh")
}
headers := buildRequestHeaders(c.StringSlice("header"))
if c.NArg() > 0 || c.IsSet("url") {
localForwarder, err := config.ValidateUrl(c)
if err != nil {
logger.WithError(err).Error("Error validating origin URL")
return errors.Wrap(err, "error validating origin URL")
}
forwarder, err := url.Parse(localForwarder)
if err != nil {
logger.WithError(err).Error("Error validating origin URL")
return errors.Wrap(err, "error validating origin URL")
}
return carrier.StartServer(logger, forwarder.Host, "https://"+hostname, shutdownC, headers)
}
return carrier.StartClient(logger, "https://"+hostname, &carrier.StdinoutStream{}, headers)
}
func buildRequestHeaders(values []string) http.Header {
headers := make(http.Header)
for _, valuePair := range values {
split := strings.Split(valuePair, ":")
if len(split) > 1 {
headers.Add(strings.TrimSpace(split[0]), strings.TrimSpace(split[1]))
}
}
return headers
}