Add support get the latest version from a URL (#167)

* Add support get the latest version from a URL

* for the security reason, only support https

Author: LinuxSuRen

.github/workflows/pull-request.yaml

@@ -73,7 +73,7 @@ jobs:
       - name: Run Gosec Security Scanner
         uses: securego/gosec@master
         with:
-          args: '-exclude=G402,G204,G304,G110,G306 ./...'
+          args: '-exclude=G402,G204,G304,G110,G306,G107 ./...'
   CodeQL:
     name: CodeQL
     runs-on: ubuntu-20.04

pkg/installer/check.go

@@ -12,6 +12,7 @@ import (
 	"github.com/mitchellh/go-homedir"
 	"gopkg.in/yaml.v2"
 	"io/ioutil"
+	"net/http"
 	"net/url"
 	sysos "os"
 	"path"
@@ -192,6 +193,10 @@ func (o *Installer) ProviderURLParse(path string, acceptPreRelease bool) (packag
 				o.AdditionBinaries = cfg.AdditionBinaries
 				o.Tar = cfg.Tar != "false"
 
+				if cfg.LatestVersion != "" {
+					version = getVersionOrDefault(cfg.LatestVersion, version)
+				}
+
 				if version == "latest" || version == "" {
 					ghClient := pkg.ReleaseClient{
 						Org:  o.Org,
@@ -270,6 +275,19 @@ func (o *Installer) ProviderURLParse(path string, acceptPreRelease bool) (packag
 	return
 }
 
+func getVersionOrDefault(version string, defaultVer string) (target string) {
+	target = defaultVer
+	// for the security reason, only support https
+	if strings.HasPrefix(version, "https://") {
+		if response, err := http.Get(version); err == nil {
+			if data, err := ioutil.ReadAll(response.Body); err == nil {
+				target = string(data)
+			}
+		}
+	}
+	return
+}
+
 // IsSupport checks if support
 func IsSupport(cfg HDConfig) bool {
 	var osSupport, archSupport bool

pkg/installer/types.go

@@ -17,6 +17,7 @@ type HDConfig struct {
 	FromSource       bool              `yaml:"fromSource"`
 	URL              string            `yaml:"url"`
 	Tar              string            `yaml:"tar"`
+	LatestVersion    string            `yaml:"latestVersion"`
 	SupportOS        []string          `yaml:"supportOS"`
 	SupportArch      []string          `yaml:"supportArch"`
 	Replacements     map[string]string `yaml:"replacements"`