evcc-io/plugin/http_auth.go

67 lines
1.4 KiB
Go

package plugin
import (
"context"
"crypto/sha256"
"fmt"
"net/http"
"strings"
"github.com/evcc-io/evcc/plugin/auth"
"github.com/evcc-io/evcc/util"
"github.com/evcc-io/evcc/util/transport"
"github.com/jpfielding/go-http-digest/pkg/digest"
"golang.org/x/oauth2"
)
func init() {
// some servers send SHA256 instead of the RFC 7616 compliant SHA-256
digest.Algs["SHA256"] = sha256.New
}
// Auth is the authorization config
type Auth struct {
Type, User, Password, Token string
Source string
Other map[string]any `mapstructure:",remain"`
}
func (p *Auth) Transport(ctx context.Context, log *util.Logger, base http.RoundTripper) (http.RoundTripper, error) {
switch strings.ToLower(p.Type) {
case "digest":
return digest.NewTransport(p.User, p.Password, base), nil
case "basic":
return transport.BasicAuth(p.User, p.Password, base), nil
case "bearer":
if p.Token == "" && p.Password != "" {
p.Token = p.Password
log.WARN.Println("using password for bearer auth is deprecated, use token instead")
}
return transport.BearerAuth(p.Token, base), nil
default:
if p.Source == "" {
return nil, fmt.Errorf("unknown auth type '%s'", p.Type)
}
if p.User != "" {
p.Other["user"] = p.User
}
if p.Password != "" {
p.Other["password"] = p.Password
}
ts, err := auth.NewFromConfig(ctx, p.Source, p.Other)
if err != nil {
return nil, err
}
return &oauth2.Transport{
Source: ts,
Base: base,
}, nil
}
}