644986b8bb
- Remove fmt from updater.go, service.go, http_client.go, cmd.go, github.go, generic_http.go; replace with string concat, coreerr.E, cli.Print
- Remove strings from updater.go (inline byte comparisons) and service.go (inline helpers)
- Replace fmt.Sprintf in error paths with string concatenation throughout
- Add cli.Print for all stdout output in updater.go (CheckForUpdates, CheckOnly, etc.)
- Fix service_examples_test.go: restore original CheckForUpdates instead of setting nil
- Test naming: all test files now follow TestFile_Function_{Good,Bad,Ugly} with all three variants mandatory
- Comments: replace prose descriptions with usage-example style on all exported functions
- Remaining banned: strings/encoding/json in github.go and generic_http.go (no Core replacement in direct deps); os/os.exec in platform files (syscall-level, unavoidable without go-process)
Co-Authored-By: Virgil <virgil@lethean.io>
59 lines
1.8 KiB
Go
59 lines
1.8 KiB
Go
package updater
|
|
|
|
import (
|
|
"context"
|
|
"encoding/json"
|
|
"net/http"
|
|
"net/url"
|
|
"strconv"
|
|
"strings"
|
|
|
|
coreerr "forge.lthn.ai/core/go-log"
|
|
)
|
|
|
|
// GenericUpdateInfo holds the information from a latest.json file.
|
|
// This file is expected to be at the root of a generic HTTP update server.
|
|
type GenericUpdateInfo struct {
|
|
Version string `json:"version"` // The version number of the update.
|
|
URL string `json:"url"` // The URL to download the update from.
|
|
}
|
|
|
|
// GetLatestUpdateFromURL fetches and parses a latest.json file from a base URL.
|
|
//
|
|
// info, err := updater.GetLatestUpdateFromURL("https://my-server.com/updates")
|
|
// // info.Version == "1.2.3", info.URL == "https://..."
|
|
func GetLatestUpdateFromURL(baseURL string) (*GenericUpdateInfo, error) {
|
|
u, err := url.Parse(baseURL)
|
|
if err != nil {
|
|
return nil, coreerr.E("GetLatestUpdateFromURL", "invalid base URL", err)
|
|
}
|
|
|
|
// Append latest.json to the path
|
|
u.Path = strings.TrimSuffix(u.Path, "/") + "/latest.json"
|
|
|
|
req, err := newAgentRequest(context.Background(), "GET", u.String())
|
|
if err != nil {
|
|
return nil, coreerr.E("GetLatestUpdateFromURL", "failed to create update check request", err)
|
|
}
|
|
|
|
resp, err := NewHTTPClient().Do(req)
|
|
if err != nil {
|
|
return nil, coreerr.E("GetLatestUpdateFromURL", "failed to fetch latest.json", err)
|
|
}
|
|
defer func() { _ = resp.Body.Close() }()
|
|
|
|
if resp.StatusCode != http.StatusOK {
|
|
return nil, coreerr.E("GetLatestUpdateFromURL", "failed to fetch latest.json: status "+strconv.Itoa(resp.StatusCode), nil)
|
|
}
|
|
|
|
var info GenericUpdateInfo
|
|
if err := json.NewDecoder(resp.Body).Decode(&info); err != nil {
|
|
return nil, coreerr.E("GetLatestUpdateFromURL", "failed to parse latest.json", err)
|
|
}
|
|
|
|
if info.Version == "" || info.URL == "" {
|
|
return nil, coreerr.E("GetLatestUpdateFromURL", "invalid latest.json content: version or url is missing", nil)
|
|
}
|
|
|
|
return &info, nil
|
|
}
|