agola/internal/gitsources/gitea/gitea.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 gitea
import (
"context"
"crypto/tls"
"encoding/base64"
"encoding/json"
"fmt"
"net"
"net/http"
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"path"
"regexp"
"strconv"
"strings"
"time"
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gitsource "agola.io/agola/internal/gitsources"
"code.gitea.io/sdk/gitea"
"golang.org/x/oauth2"
errors "golang.org/x/xerrors"
)
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 (
// gitea corrently doesn't have any auth scope
GiteaOauth2Scopes = []string{""}
branchRefPrefix = "refs/heads/"
tagRefPrefix = "refs/tags/"
pullRequestRefRegex = regexp.MustCompile("refs/pull/(.*)/head")
pullRequestRefFmt = "refs/pull/%s/head"
)
type Opts struct {
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APIURL string
Token string
SkipVerify bool
Oauth2ClientID string
Oauth2Secret string
}
type Client struct {
client *gitea.Client
oauth2HTTPClient *http.Client
APIURL string
oauth2ClientID string
oauth2Secret string
}
// fromCommitStatus converts a gitsource commit status to a gitea commit status
func fromCommitStatus(status gitsource.CommitStatus) gitea.StatusState {
switch status {
case gitsource.CommitStatusPending:
return gitea.StatusPending
case gitsource.CommitStatusSuccess:
return gitea.StatusSuccess
case gitsource.CommitStatusError:
return gitea.StatusError
case gitsource.CommitStatusFailed:
return gitea.StatusFailure
default:
panic(errors.Errorf("unknown commit status %q", status))
}
}
func parseRepoPath(repopath string) (string, string, error) {
parts := strings.Split(repopath, "/")
if len(parts) != 2 {
return "", "", errors.Errorf("wrong gitea repo path: %q", repopath)
}
return parts[0], parts[1], nil
}
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}
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client := gitea.NewClient(opts.APIURL, opts.Token)
client.SetHTTPClient(httpClient)
return &Client{
client: client,
oauth2HTTPClient: httpClient,
APIURL: opts.APIURL,
oauth2ClientID: opts.Oauth2ClientID,
oauth2Secret: opts.Oauth2Secret,
}, nil
}
func (c *Client) oauth2Config(callbackURL string) *oauth2.Config {
return &oauth2.Config{
ClientID: c.oauth2ClientID,
ClientSecret: c.oauth2Secret,
Scopes: GiteaOauth2Scopes,
Endpoint: oauth2.Endpoint{
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AuthURL: fmt.Sprintf("%s/login/oauth/authorize", c.APIURL),
TokenURL: fmt.Sprintf("%s/login/oauth/access_token", c.APIURL),
},
RedirectURL: callbackURL,
}
}
func (c *Client) GetOauth2AuthorizationURL(callbackURL, state string) (string, error) {
var config = c.oauth2Config(callbackURL)
return config.AuthCodeURL(state), nil
}
func (c *Client) RequestOauth2Token(callbackURL, code string) (*oauth2.Token, error) {
ctx := context.TODO()
ctx = context.WithValue(ctx, oauth2.HTTPClient, c.oauth2HTTPClient)
var config = c.oauth2Config(callbackURL)
token, err := config.Exchange(ctx, code)
if err != nil {
return nil, errors.Errorf("cannot get oauth2 token: %w", err)
}
return token, nil
}
func (c *Client) RefreshOauth2Token(refreshToken string) (*oauth2.Token, error) {
ctx := context.TODO()
ctx = context.WithValue(ctx, oauth2.HTTPClient, c.oauth2HTTPClient)
var config = c.oauth2Config("")
token := &oauth2.Token{RefreshToken: refreshToken}
ts := config.TokenSource(ctx, token)
return ts.Token()
}
func (c *Client) LoginPassword(username, password, tokenName string) (string, error) {
// try to get agola access token if it already exists
// use custom http call since gitea api client doesn't provide an easy way to
// guess if the username/password login failed
var accessToken string
tokens := make([]*gitea.AccessToken, 0, 10)
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req, err := http.NewRequest("GET", c.APIURL+"/api/v1"+fmt.Sprintf("/users/%s/tokens", username), nil)
if err != nil {
return "", err
}
req.Header.Set("Authorization", "Basic "+base64.StdEncoding.EncodeToString([]byte(username+":"+password)))
resp, err := c.oauth2HTTPClient.Do(req)
if err != nil {
return "", err
}
if resp.StatusCode == http.StatusUnauthorized {
return "", gitsource.ErrUnauthorized
}
if resp.StatusCode/100 != 2 {
return "", errors.Errorf("gitea api status code %d", resp.StatusCode)
}
defer resp.Body.Close()
dec := json.NewDecoder(resp.Body)
if err := dec.Decode(&tokens); err != nil {
return "", err
}
for _, token := range tokens {
if token.Name == tokenName {
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accessToken = token.Token
break
}
}
// create access token
if accessToken == "" {
token, terr := c.client.CreateAccessToken(
username,
password,
gitea.CreateAccessTokenOption{Name: tokenName},
)
if terr != nil {
return "", terr
}
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accessToken = token.Token
}
return accessToken, nil
}
func (c *Client) GetUserInfo() (*gitsource.UserInfo, error) {
user, err := c.client.GetMyUserInfo()
if err != nil {
return nil, err
}
return &gitsource.UserInfo{
ID: strconv.FormatInt(user.ID, 10),
LoginName: user.UserName,
Email: user.Email,
}, nil
}
func (c *Client) GetRepoInfo(repopath string) (*gitsource.RepoInfo, error) {
owner, reponame, err := parseRepoPath(repopath)
if err != nil {
return nil, err
}
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rr, err := c.client.GetRepo(owner, reponame)
if err != nil {
return nil, err
}
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return fromGiteaRepo(rr), nil
}
func (c *Client) GetFile(repopath, commit, file string) ([]byte, error) {
owner, reponame, err := parseRepoPath(repopath)
if err != nil {
return nil, err
}
data, err := c.client.GetFile(owner, reponame, commit, file)
return data, err
}
func (c *Client) CreateDeployKey(repopath, title, pubKey string, readonly bool) error {
owner, reponame, err := parseRepoPath(repopath)
if err != nil {
return err
}
if _, err = c.client.CreateDeployKey(owner, reponame, gitea.CreateKeyOption{
Title: title,
Key: pubKey,
ReadOnly: readonly,
}); err != nil {
return errors.Errorf("error creating deploy key: %w", err)
}
return nil
}
func (c *Client) UpdateDeployKey(repopath, title, pubKey string, readonly bool) error {
owner, reponame, err := parseRepoPath(repopath)
if err != nil {
return err
}
// NOTE(sgotti) gitea has a bug where if we delete and remove the same key with
// the same value it is correctly readded and the admin must force a
// authorized_keys regeneration on the server. To avoid this we update it only
// when the public key value has changed
keys, err := c.client.ListDeployKeys(owner, reponame)
if err != nil {
return errors.Errorf("error retrieving existing deploy keys: %w", err)
}
for _, key := range keys {
if key.Title == title {
if key.Key == pubKey {
return nil
}
if err := c.client.DeleteDeployKey(owner, reponame, key.ID); err != nil {
return errors.Errorf("error removing existing deploy key: %w", err)
}
}
}
if _, err := c.client.CreateDeployKey(owner, reponame, gitea.CreateKeyOption{
Title: title,
Key: pubKey,
ReadOnly: readonly,
}); err != nil {
return errors.Errorf("error creating deploy key: %w", err)
}
return nil
}
func (c *Client) DeleteDeployKey(repopath, title string) error {
owner, reponame, err := parseRepoPath(repopath)
if err != nil {
return err
}
keys, err := c.client.ListDeployKeys(owner, reponame)
if err != nil {
return errors.Errorf("error retrieving existing deploy keys: %w", err)
}
for _, key := range keys {
if key.Title == title {
if err := c.client.DeleteDeployKey(owner, reponame, key.ID); err != nil {
return errors.Errorf("error removing existing deploy key: %w", err)
}
}
}
return nil
}
func (c *Client) CreateRepoWebhook(repopath, url, secret string) error {
owner, reponame, err := parseRepoPath(repopath)
if err != nil {
return err
}
opts := gitea.CreateHookOption{
Type: "gitea",
Config: map[string]string{
"url": url,
"content_type": "json",
"secret": secret,
},
Events: []string{"push", "pull_request"},
Active: true,
}
if _, err = c.client.CreateRepoHook(owner, reponame, opts); err != nil {
return errors.Errorf("error creating repository webhook: %w", err)
}
return nil
}
func (c *Client) DeleteRepoWebhook(repopath, u string) error {
owner, reponame, err := parseRepoPath(repopath)
if err != nil {
return err
}
hooks, err := c.client.ListRepoHooks(owner, reponame)
if err != nil {
return errors.Errorf("error retrieving repository webhooks: %w", err)
}
// match the full url so we can have multiple webhooks for different agola
// projects
for _, hook := range hooks {
if hook.Config["url"] == u {
if err := c.client.DeleteRepoHook(owner, reponame, hook.ID); err != nil {
return errors.Errorf("error deleting existing repository webhook: %w", err)
}
}
}
return nil
}
func (c *Client) CreateCommitStatus(repopath, commitSHA string, status gitsource.CommitStatus, targetURL, description, context string) error {
owner, reponame, err := parseRepoPath(repopath)
if err != nil {
return err
}
_, err = c.client.CreateStatus(owner, reponame, commitSHA, gitea.CreateStatusOption{
State: fromCommitStatus(status),
TargetURL: targetURL,
Description: description,
Context: context,
})
return err
}
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func (c *Client) ListUserRepos() ([]*gitsource.RepoInfo, error) {
remoteRepos, err := c.client.ListMyRepos()
if err != nil {
return nil, err
}
repos := []*gitsource.RepoInfo{}
for _, rr := range remoteRepos {
// keep only repos with admin permissions
if !rr.Permissions.Admin {
continue
}
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repos = append(repos, fromGiteaRepo(rr))
}
return repos, nil
}
func fromGiteaRepo(rr *gitea.Repository) *gitsource.RepoInfo {
return &gitsource.RepoInfo{
ID: strconv.FormatInt(rr.ID, 10),
Path: path.Join(rr.Owner.UserName, rr.Name),
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HTMLURL: rr.HTMLURL,
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SSHCloneURL: rr.SSHURL,
HTTPCloneURL: rr.CloneURL,
}
}
func (c *Client) GetRef(repopath, ref string) (*gitsource.Ref, error) {
owner, reponame, err := parseRepoPath(repopath)
if err != nil {
return nil, err
}
remoteRefs, err := c.client.GetRepoRefs(owner, reponame, ref)
if err != nil {
return nil, err
}
if len(remoteRefs) == 0 {
return nil, errors.Errorf("no ref %q for repository %q", ref, repopath)
}
if len(remoteRefs) != 1 {
return nil, errors.Errorf("no exact match found for ref %q for repository %q", ref, repopath)
}
return fromGiteaRef(remoteRefs[0])
}
func fromGiteaRef(remoteRef *gitea.Reference) (*gitsource.Ref, error) {
t := remoteRef.Object.Type
switch t {
case "commit":
default:
return nil, errors.Errorf("unsupported object type: %s", t)
}
return &gitsource.Ref{
Ref: remoteRef.Ref,
CommitSHA: remoteRef.Object.SHA,
}, nil
}
func (c *Client) RefType(ref string) (gitsource.RefType, string, error) {
switch {
case strings.HasPrefix(ref, branchRefPrefix):
return gitsource.RefTypeBranch, strings.TrimPrefix(ref, branchRefPrefix), nil
case strings.HasPrefix(ref, tagRefPrefix):
return gitsource.RefTypeTag, strings.TrimPrefix(ref, tagRefPrefix), nil
case pullRequestRefRegex.MatchString(ref):
m := pullRequestRefRegex.FindStringSubmatch(ref)
return gitsource.RefTypePullRequest, m[1], nil
default:
return -1, "", errors.Errorf("unsupported ref: %s", ref)
}
}
func (c *Client) GetCommit(repopath, commitSHA string) (*gitsource.Commit, error) {
owner, reponame, err := parseRepoPath(repopath)
if err != nil {
return nil, err
}
commit, err := c.client.GetSingleCommit(owner, reponame, commitSHA)
if err != nil {
return nil, err
}
return &gitsource.Commit{
SHA: commit.SHA,
Message: commit.RepoCommit.Message,
}, nil
}
func (c *Client) BranchRef(branch string) string {
return branchRefPrefix + branch
}
func (c *Client) TagRef(tag string) string {
return tagRefPrefix + tag
}
func (c *Client) PullRequestRef(prID string) string {
return fmt.Sprintf(pullRequestRefFmt, prID)
}
func (c *Client) CommitLink(repoInfo *gitsource.RepoInfo, commitSHA string) string {
return fmt.Sprintf("%s/commit/%s", repoInfo.HTMLURL, commitSHA)
}
func (c *Client) BranchLink(repoInfo *gitsource.RepoInfo, branch string) string {
return fmt.Sprintf("%s/src/branch/%s", repoInfo.HTMLURL, branch)
}
func (c *Client) TagLink(repoInfo *gitsource.RepoInfo, tag string) string {
return fmt.Sprintf("%s/src/tag/%s", repoInfo.HTMLURL, tag)
}
func (c *Client) PullRequestLink(repoInfo *gitsource.RepoInfo, prID string) string {
return fmt.Sprintf("%s/pulls/%s", repoInfo.HTMLURL, prID)
}