agola/internal/gitsources/gitlab/gitlab.go

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// Copyright 2019 Sorint.lab
//
// 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 gitlab
import (
"context"
"crypto/tls"
"encoding/base64"
"fmt"
"net"
"net/http"
"net/url"
"path"
"strconv"
"time"
"github.com/pkg/errors"
gitsource "github.com/sorintlab/agola/internal/gitsources"
"github.com/sorintlab/agola/internal/services/types"
gitlab "github.com/xanzy/go-gitlab"
"golang.org/x/oauth2"
)
const (
// TODO(sgotti) The gitea client doesn't provide an easy way to detect http response codes...
// we should probably use our own client implementation
ClientNotFound = "404 Not Found"
)
var (
GitlabOauth2Scopes = []string{"api"}
)
type Opts struct {
URL string
Token string
SkipVerify bool
Oauth2ClientID string
Oauth2Secret string
}
type Client struct {
client *gitlab.Client
URL string
oauth2ClientID string
oauth2Secret string
}
func New(opts Opts) (*Client, error) {
// copied from net/http until it has a clone function: https://github.com/golang/go/issues/26013
transport := &http.Transport{
Proxy: http.ProxyFromEnvironment,
DialContext: (&net.Dialer{
Timeout: 30 * time.Second,
KeepAlive: 30 * time.Second,
DualStack: true,
}).DialContext,
MaxIdleConns: 100,
IdleConnTimeout: 90 * time.Second,
TLSHandshakeTimeout: 10 * time.Second,
ExpectContinueTimeout: 1 * time.Second,
TLSClientConfig: &tls.Config{InsecureSkipVerify: opts.SkipVerify},
}
httpClient := &http.Client{Transport: transport}
client := gitlab.NewOAuthClient(httpClient, opts.Token)
client.SetBaseURL(opts.URL)
return &Client{
client: client,
URL: opts.URL,
oauth2ClientID: opts.Oauth2ClientID,
oauth2Secret: opts.Oauth2Secret,
}, nil
}
func (c *Client) GetOauth2AuthorizationURL(callbackURL, state string) (string, error) {
var config = &oauth2.Config{
ClientID: c.oauth2ClientID,
ClientSecret: c.oauth2Secret,
Scopes: GitlabOauth2Scopes,
Endpoint: oauth2.Endpoint{
AuthURL: fmt.Sprintf("%s/oauth/authorize", c.URL),
TokenURL: fmt.Sprintf("%s/oauth/token", c.URL),
},
RedirectURL: callbackURL,
}
return config.AuthCodeURL(state), nil
}
func (c *Client) RequestOauth2Token(callbackURL, code string) (*oauth2.Token, error) {
var config = &oauth2.Config{
ClientID: c.oauth2ClientID,
ClientSecret: c.oauth2Secret,
Scopes: GitlabOauth2Scopes,
Endpoint: oauth2.Endpoint{
AuthURL: fmt.Sprintf("%s/oauth/authorize", c.URL),
TokenURL: fmt.Sprintf("%s/oauth/token", c.URL),
},
RedirectURL: callbackURL,
}
token, err := config.Exchange(context.TODO(), code)
if err != nil {
return nil, errors.Wrapf(err, "cannot get oauth2 token")
}
return token, nil
}
func (c *Client) GetUserInfo() (*gitsource.UserInfo, error) {
user, _, err := c.client.Users.CurrentUser()
if err != nil {
return nil, err
}
return &gitsource.UserInfo{
ID: strconv.Itoa(user.ID),
LoginName: user.Username,
Email: user.Email,
}, nil
}
func (c *Client) GetFile(owner, repo, commit, file string) ([]byte, error) {
f, _, err := c.client.RepositoryFiles.GetFile(path.Join(owner, repo), file, &gitlab.GetFileOptions{Ref: gitlab.String(commit)})
data, err := base64.StdEncoding.DecodeString(f.Content)
if err != nil {
return nil, err
}
return data, err
}
func (c *Client) CreateDeployKey(owner, repo, title, pubKey string, readonly bool) error {
_, _, err := c.client.DeployKeys.AddDeployKey(path.Join(owner, repo), &gitlab.AddDeployKeyOptions{
Title: gitlab.String(title),
Key: gitlab.String(pubKey),
})
return errors.Wrapf(err, "error creating deploy key")
}
func (c *Client) UpdateDeployKey(owner, repo, title, pubKey string, readonly bool) error {
keys, _, err := c.client.DeployKeys.ListProjectDeployKeys(path.Join(owner, repo), nil)
if err != nil {
return errors.Wrapf(err, "error retrieving existing deploy keys")
}
for _, key := range keys {
if key.Title == title {
if key.Key == pubKey {
return nil
}
if _, err := c.client.DeployKeys.DeleteDeployKey(path.Join(owner, repo), key.ID); err != nil {
return errors.Wrapf(err, "error removing existing deploy key")
}
}
}
if _, _, err := c.client.DeployKeys.AddDeployKey(path.Join(owner, repo), &gitlab.AddDeployKeyOptions{
Title: &title,
Key: &pubKey,
}); err != nil {
return errors.Wrapf(err, "error creating deploy key")
}
return nil
}
func (c *Client) DeleteDeployKey(owner, repo, title string) error {
keys, _, err := c.client.DeployKeys.ListProjectDeployKeys(path.Join(owner, repo), nil)
if err != nil {
return errors.Wrapf(err, "error retrieving existing deploy keys")
}
for _, key := range keys {
if key.Title == title {
if _, err := c.client.DeployKeys.DeleteDeployKey(path.Join(owner, repo), key.ID); err != nil {
return errors.Wrapf(err, "error removing existing deploy key")
}
}
}
return nil
}
func (c *Client) CreateRepoWebhook(owner, repo, url, secret string) error {
opts := &gitlab.AddProjectHookOptions{
URL: gitlab.String(url),
PushEvents: gitlab.Bool(true),
}
_, _, err := c.client.Projects.AddProjectHook(path.Join(owner, repo), opts)
return errors.Wrapf(err, "error creating repository webhook")
}
func (c *Client) DeleteRepoWebhook(owner, repo, u string) error {
curURL, err := url.Parse(u)
if err != nil {
return errors.Wrapf(err, "failed to parse url")
}
hooks, _, err := c.client.Projects.ListProjectHooks(path.Join(owner, repo), nil)
if err != nil {
return errors.Wrapf(err, "error retrieving repository webhooks")
}
for _, hook := range hooks {
u, err := url.Parse(hook.URL)
if err == nil && u.Host == curURL.Host {
if _, err := c.client.Projects.DeleteProjectHook(path.Join(owner, repo), hook.ID); err != nil {
return errors.Wrapf(err, "error deleting existing repository webhook")
}
}
}
return nil
}
func (c *Client) ParseWebhook(r *http.Request) (*types.WebhookData, error) {
hookEvent := "X-Gitea-Event"
return nil, errors.Errorf("unknown webhook event type: %q", r.Header.Get(hookEvent))
}