1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
|
package caddyscript
import (
"fmt"
"net/http"
"github.com/starlight-go/starlight/convert"
"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", "redirect"}
}
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
}
// Redirect handles an http redirect from starlark code.
func (r HTTPRequest) Redirect(thread *starlark.Thread, fn *starlark.Builtin, args starlark.Tuple, kwargs []starlark.Tuple) (starlark.Value, error) {
var w starlark.Value
var req HTTPRequest
var newURL string
err := starlark.UnpackPositionalArgs(fn.Name(), args, kwargs, 3, &w, &req, &newURL)
if err != nil {
return starlark.None, fmt.Errorf("unpacking arguments: %v", err.Error())
}
writer := convert.FromValue(w)
if w, ok := writer.(http.ResponseWriter); ok {
http.Redirect(w, req.Req, newURL, http.StatusSeeOther)
return starlark.None, nil
}
return starlark.None, fmt.Errorf("first provided argument is not http.ResponseWriter")
}
// 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 "redirect":
b := starlark.NewBuiltin("Redirect", r.Redirect)
b = b.BindReceiver(r)
return b, nil
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
}
|
