woodpecker/server/services/utils/http.go

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// Copyright 2023 Woodpecker Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package utils
import (
"bytes"
"context"
"crypto"
"encoding/json"
"fmt"
"io"
"net/http"
"net/url"
"github.com/go-ap/httpsig"
)
// Send makes an http request to the given endpoint, writing the input
// to the request body and un-marshaling the output from the response body.
func Send(ctx context.Context, method, path string, privateKey crypto.PrivateKey, in, out any) (int, error) {
uri, err := url.Parse(path)
if err != nil {
return 0, err
}
// if we are posting or putting data, we need to write it to the body of the request.
var buf io.ReadWriter
if in != nil {
buf = new(bytes.Buffer)
jsonErr := json.NewEncoder(buf).Encode(in)
if jsonErr != nil {
return 0, jsonErr
}
}
// creates a new http request to the endpoint.
req, err := http.NewRequestWithContext(ctx, method, uri.String(), buf)
if err != nil {
return 0, err
}
if in != nil {
req.Header.Set("Content-Type", "application/json")
}
err = SignHTTPRequest(privateKey, req)
if err != nil {
return 0, err
}
resp, err := http.DefaultClient.Do(req)
if err != nil {
return 0, err
}
defer resp.Body.Close()
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if resp.StatusCode != http.StatusOK {
body, err := io.ReadAll(resp.Body)
if err != nil {
return resp.StatusCode, err
}
return resp.StatusCode, fmt.Errorf("response: %s", string(body))
}
// if no other errors parse and return the json response.
err = json.NewDecoder(resp.Body).Decode(out)
return resp.StatusCode, err
}
func SignHTTPRequest(privateKey crypto.PrivateKey, req *http.Request) error {
pubKeyID := "woodpecker-ci-plugins"
signer := httpsig.NewEd25519Signer(pubKeyID, privateKey, nil)
return signer.Sign(req)
}