mirror of https://github.com/caddyserver/caddy.git
112 lines
3.9 KiB
Go
112 lines
3.9 KiB
Go
// Copyright 2015 Matthew Holt and The Caddy Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package caddyscript
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import (
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"fmt"
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"net/http"
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"github.com/starlight-go/starlight/convert"
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"go.starlark.net/starlark"
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)
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// HTTPRequest represents an http request type in caddyscript.
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type HTTPRequest struct{ Req *http.Request }
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// AttrNames defines what properties and methods are available on the HTTPRequest type.
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func (r HTTPRequest) AttrNames() []string {
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return []string{"header", "query", "url", "method", "host", "tls", "redirect"}
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}
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func (r HTTPRequest) Freeze() {}
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func (r HTTPRequest) Hash() (uint32, error) { return 0, fmt.Errorf("unhashable: HTTPRequest") }
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func (r HTTPRequest) String() string { return fmt.Sprint(r.Req) }
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func (r HTTPRequest) Type() string { return "HTTPRequest" }
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func (r HTTPRequest) Truth() starlark.Bool { return true }
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// Header handles returning a header key.
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func (r HTTPRequest) Header(thread *starlark.Thread, fn *starlark.Builtin, args starlark.Tuple, kwargs []starlark.Tuple) (starlark.Value, error) {
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var key string
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err := starlark.UnpackPositionalArgs(fn.Name(), args, kwargs, 1, &key)
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if err != nil {
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return starlark.None, fmt.Errorf("get request header: %v", err.Error())
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}
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return starlark.String(r.Req.Header.Get(key)), nil
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}
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// Redirect handles an http redirect from starlark code.
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func (r HTTPRequest) Redirect(thread *starlark.Thread, fn *starlark.Builtin, args starlark.Tuple, kwargs []starlark.Tuple) (starlark.Value, error) {
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var w starlark.Value
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var req HTTPRequest
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var newURL string
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err := starlark.UnpackPositionalArgs(fn.Name(), args, kwargs, 3, &w, &req, &newURL)
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if err != nil {
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return starlark.None, fmt.Errorf("unpacking arguments: %v", err.Error())
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}
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writer := convert.FromValue(w)
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if w, ok := writer.(http.ResponseWriter); ok {
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http.Redirect(w, req.Req, newURL, http.StatusSeeOther)
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return starlark.None, nil
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}
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return starlark.None, fmt.Errorf("first provided argument is not http.ResponseWriter")
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}
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// Attr defines what happens when props or methods are called on the HTTPRequest type.
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func (r HTTPRequest) Attr(name string) (starlark.Value, error) {
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switch name {
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case "redirect":
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b := starlark.NewBuiltin("Redirect", r.Redirect)
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b = b.BindReceiver(r)
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return b, nil
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case "tls":
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tls := new(starlark.Dict)
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tls.SetKey(starlark.String("cipher_suite"), starlark.MakeUint(uint(r.Req.TLS.CipherSuite)))
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tls.SetKey(starlark.String("did_resume"), starlark.Bool(r.Req.TLS.DidResume))
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tls.SetKey(starlark.String("handshake_complete"), starlark.Bool(r.Req.TLS.HandshakeComplete))
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tls.SetKey(starlark.String("negotiated_protocol"), starlark.String(r.Req.TLS.NegotiatedProtocol))
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tls.SetKey(starlark.String("negotiated_protocol_is_mutual"), starlark.Bool(r.Req.TLS.NegotiatedProtocolIsMutual))
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tls.SetKey(starlark.String("server_name"), starlark.String(r.Req.TLS.ServerName))
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tls.SetKey(starlark.String("version"), starlark.String(r.Req.TLS.Version))
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return tls, nil
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case "header":
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b := starlark.NewBuiltin("Header", r.Header)
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b = b.BindReceiver(r)
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return b, nil
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case "query":
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qVals := r.Req.URL.Query()
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query := starlark.NewDict(len(qVals))
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for k, v := range qVals {
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query.SetKey(starlark.String(k), starlark.String(v[0]))
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}
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return query, nil
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case "url":
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return starlark.String(r.Req.URL.Path), nil
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case "method":
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return starlark.String(r.Req.Method), nil
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case "host":
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return starlark.String(r.Req.Host), nil
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}
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return nil, nil
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}
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