caddy/internal/caddyscript/lib/http.go
dev 27ecc7f384 Protocol and Caddyscript matchers
* Added matcher to determine what protocol the request is being made by
  - grpc, tls, http
* Added ability to run caddyscript in a matcher to evaluate the http request
* Added TLS field to caddyscript request time
* Added a library to manipulate and compare a new caddyscript time type
* Library for regex in starlark
2019-04-08 09:58:11 -04:00

72 lines
2.5 KiB
Go

package caddyscript
import (
"fmt"
"net/http"
"go.starlark.net/starlark"
)
// HTTPRequest represents an http request type in caddyscript.
type HTTPRequest struct{ Req *http.Request }
// AttrNames defines what properties and methods are available on the HTTPRequest type.
func (r HTTPRequest) AttrNames() []string {
return []string{"header", "query", "url", "method", "host", "tls"}
}
func (r HTTPRequest) Freeze() {}
func (r HTTPRequest) Hash() (uint32, error) { return 0, fmt.Errorf("unhashable: HTTPRequest") }
func (r HTTPRequest) String() string { return fmt.Sprint(r.Req) }
func (r HTTPRequest) Type() string { return "HTTPRequest" }
func (r HTTPRequest) Truth() starlark.Bool { return true }
// Header handles returning a header key.
func (r HTTPRequest) Header(thread *starlark.Thread, fn *starlark.Builtin, args starlark.Tuple, kwargs []starlark.Tuple) (starlark.Value, error) {
var key string
err := starlark.UnpackPositionalArgs(fn.Name(), args, kwargs, 1, &key)
if err != nil {
return starlark.None, fmt.Errorf("get request header: %v", err.Error())
}
return starlark.String(r.Req.Header.Get(key)), nil
}
// Attr defines what happens when props or methods are called on the HTTPRequest type.
func (r HTTPRequest) Attr(name string) (starlark.Value, error) {
switch name {
case "tls":
tls := new(starlark.Dict)
tls.SetKey(starlark.String("cipher_suite"), starlark.MakeUint(uint(r.Req.TLS.CipherSuite)))
tls.SetKey(starlark.String("did_resume"), starlark.Bool(r.Req.TLS.DidResume))
tls.SetKey(starlark.String("handshake_complete"), starlark.Bool(r.Req.TLS.HandshakeComplete))
tls.SetKey(starlark.String("negotiated_protocol"), starlark.String(r.Req.TLS.NegotiatedProtocol))
tls.SetKey(starlark.String("negotiated_protocol_is_mutual"), starlark.Bool(r.Req.TLS.NegotiatedProtocolIsMutual))
tls.SetKey(starlark.String("server_name"), starlark.String(r.Req.TLS.ServerName))
tls.SetKey(starlark.String("version"), starlark.String(r.Req.TLS.Version))
return tls, nil
case "header":
b := starlark.NewBuiltin("Header", r.Header)
b = b.BindReceiver(r)
return b, nil
case "query":
qVals := r.Req.URL.Query()
query := starlark.NewDict(len(qVals))
for k, v := range qVals {
query.SetKey(starlark.String(k), starlark.String(v[0]))
}
return query, nil
case "url":
return starlark.String(r.Req.URL.Path), nil
case "method":
return starlark.String(r.Req.Method), nil
case "host":
return starlark.String(r.Req.Host), nil
}
return nil, nil
}