d1353e1f7c
* update code.gitea.io/sdk/gitea v0.13.1 -> v0.13.2 * update github.com/go-swagger/go-swagger v0.25.0 -> v0.26.0 * update github.com/google/uuid v1.1.2 -> v1.2.0 * update github.com/klauspost/compress v1.11.3 -> v1.11.7 * update github.com/lib/pq 083382b7e6fc -> v1.9.0 * update github.com/markbates/goth v1.65.0 -> v1.66.1 * update github.com/mattn/go-sqlite3 v1.14.4 -> v1.14.6 * update github.com/mgechev/revive 246eac737dc7 -> v1.0.3 * update github.com/minio/minio-go/v7 v7.0.6 -> v7.0.7 * update github.com/niklasfasching/go-org v1.3.2 -> v1.4.0 * update github.com/olivere/elastic/v7 v7.0.21 -> v7.0.22 * update github.com/pquerna/otp v1.2.0 -> v1.3.0 * update github.com/xanzy/go-gitlab v0.39.0 -> v0.42.0 * update github.com/yuin/goldmark v1.2.1 -> v1.3.1
83 lines
2.3 KiB
Go
Vendored
83 lines
2.3 KiB
Go
Vendored
// Copyright 2021 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package externalaccount
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import (
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"bytes"
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"context"
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"encoding/json"
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"fmt"
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"golang.org/x/oauth2"
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"io"
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"io/ioutil"
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"net/http"
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"time"
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)
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// generateAccesstokenReq is used for service account impersonation
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type generateAccessTokenReq struct {
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Delegates []string `json:"delegates,omitempty"`
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Lifetime string `json:"lifetime,omitempty"`
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Scope []string `json:"scope,omitempty"`
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}
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type impersonateTokenResponse struct {
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AccessToken string `json:"accessToken"`
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ExpireTime string `json:"expireTime"`
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}
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type impersonateTokenSource struct {
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ctx context.Context
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ts oauth2.TokenSource
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url string
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scopes []string
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}
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// Token performs the exchange to get a temporary service account
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func (its impersonateTokenSource) Token() (*oauth2.Token, error) {
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reqBody := generateAccessTokenReq{
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Lifetime: "3600s",
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Scope: its.scopes,
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}
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b, err := json.Marshal(reqBody)
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if err != nil {
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return nil, fmt.Errorf("oauth2/google: unable to marshal request: %v", err)
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}
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client := oauth2.NewClient(its.ctx, its.ts)
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req, err := http.NewRequest("POST", its.url, bytes.NewReader(b))
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if err != nil {
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return nil, fmt.Errorf("oauth2/google: unable to create impersonation request: %v", err)
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}
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req = req.WithContext(its.ctx)
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req.Header.Set("Content-Type", "application/json")
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resp, err := client.Do(req)
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if err != nil {
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return nil, fmt.Errorf("oauth2/google: unable to generate access token: %v", err)
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}
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defer resp.Body.Close()
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body, err := ioutil.ReadAll(io.LimitReader(resp.Body, 1<<20))
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if err != nil {
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return nil, fmt.Errorf("oauth2/google: unable to read body: %v", err)
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}
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if c := resp.StatusCode; c < 200 || c > 299 {
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return nil, fmt.Errorf("oauth2/google: status code %d: %s", c, body)
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}
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var accessTokenResp impersonateTokenResponse
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if err := json.Unmarshal(body, &accessTokenResp); err != nil {
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return nil, fmt.Errorf("oauth2/google: unable to parse response: %v", err)
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}
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expiry, err := time.Parse(time.RFC3339, accessTokenResp.ExpireTime)
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if err != nil {
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return nil, fmt.Errorf("oauth2/google: unable to parse expiry: %v", err)
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}
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return &oauth2.Token{
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AccessToken: accessTokenResp.AccessToken,
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Expiry: expiry,
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TokenType: "Bearer",
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}, nil
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}
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