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gitea_source.go
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/
gitea_source.go
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package selfupdate
import (
"context"
"fmt"
"io"
"net/http"
"os"
"code.gitea.io/sdk/gitea"
)
// GiteaConfig is an object to pass to NewGiteaSource
type GiteaConfig struct {
// APIToken represents Gitea API token. If it's not empty, it will be used for authentication for the API
APIToken string
// BaseURL is a base URL of your gitea instance. This parameter has NO default value.
BaseURL string
// Deprecated: Context option is no longer used
Context context.Context
}
// GiteaSource is used to load release information from Gitea
type GiteaSource struct {
api *gitea.Client
token string
baseURL string
}
// NewGiteaSource creates a new NewGiteaSource from a config object.
// It initializes a Gitea API Client.
// If you set your API token to the $GITEA_TOKEN environment variable, the client will use it.
// You can pass an empty GiteaSource{} to use the default configuration
func NewGiteaSource(config GiteaConfig) (*GiteaSource, error) {
token := config.APIToken
if token == "" {
// try the environment variable
token = os.Getenv("GITEA_TOKEN")
}
if config.BaseURL == "" {
return nil, fmt.Errorf("gitea base url must be set")
}
ctx := config.Context
if ctx == nil {
ctx = context.Background()
}
client, err := gitea.NewClient(config.BaseURL, gitea.SetContext(ctx), gitea.SetToken(token))
if err != nil {
return nil, fmt.Errorf("error connecting to gitea: %w", err)
}
return &GiteaSource{
api: client,
token: token,
baseURL: config.BaseURL,
}, nil
}
// ListReleases returns all available releases
func (s *GiteaSource) ListReleases(ctx context.Context, repository Repository) ([]SourceRelease, error) {
owner, repo, err := repository.GetSlug()
if err != nil {
return nil, err
}
s.api.SetContext(ctx)
rels, res, err := s.api.ListReleases(owner, repo, gitea.ListReleasesOptions{})
if err != nil {
if res != nil && res.StatusCode == http.StatusNotFound {
// repository not found or release not found. It's not an error here.
log.Print("Repository or release not found")
return nil, nil
}
log.Printf("API returned an error response: %s", err)
return nil, err
}
releases := make([]SourceRelease, len(rels))
for i, rel := range rels {
releases[i] = NewGiteaRelease(rel)
}
return releases, nil
}
// DownloadReleaseAsset downloads an asset from a release.
// It returns an io.ReadCloser: it is your responsibility to Close it.
func (s *GiteaSource) DownloadReleaseAsset(ctx context.Context, rel *Release, assetID int64) (io.ReadCloser, error) {
if rel == nil {
return nil, ErrInvalidRelease
}
owner, repo, err := rel.repository.GetSlug()
if err != nil {
return nil, err
}
s.api.SetContext(ctx)
attachment, _, err := s.api.GetReleaseAttachment(owner, repo, rel.ReleaseID, assetID)
if err != nil {
return nil, fmt.Errorf("failed to call Gitea Releases API for getting the asset ID %d on repository '%s/%s': %w", assetID, owner, repo, err)
}
client := http.DefaultClient
req, err := http.NewRequestWithContext(ctx, http.MethodGet, attachment.DownloadURL, http.NoBody)
if err != nil {
log.Print(err)
return nil, err
}
if s.token != "" {
// verify request is from same domain not to leak token
ok, err := canUseTokenForDomain(s.baseURL, attachment.DownloadURL)
if err != nil {
return nil, err
}
if ok {
req.Header.Set("Authorization", "token "+s.token)
}
}
response, err := client.Do(req)
if err != nil {
log.Print(err)
return nil, err
}
return response.Body, nil
}
// Verify interface
var _ Source = &GiteaSource{}