fix go get sub package and add domain on installation to let go get work defaultly (#1518)

* fix go get sub package and add domain on installation to let go get work defaultly

* fix import sequence

* fix .git problem

modules/context/repo.go

@@ -127,7 +127,7 @@ func composeGoGetImport(owner, repo string) string {
 func earlyResponseForGoGetMeta(ctx *Context) {
 	ctx.PlainText(200, []byte(com.Expand(`<meta name="go-import" content="{GoGetImport} git {CloneLink}">`,
 		map[string]string{
-			"GoGetImport": composeGoGetImport(ctx.Params(":username"), ctx.Params(":reponame")),
+			"GoGetImport": composeGoGetImport(ctx.Params(":username"), strings.TrimSuffix(ctx.Params(":reponame"), ".git")),
 			"CloneLink":   models.ComposeHTTPSCloneURL(ctx.Params(":username"), ctx.Params(":reponame")),
 		})))
 }

routers/install.go

@@ -257,6 +257,7 @@ func InstallPost(ctx *context.Context, form auth.InstallForm) {
 	cfg.Section("repository").Key("ROOT").SetValue(form.RepoRootPath)
 	cfg.Section("").Key("RUN_USER").SetValue(form.RunUser)
 	cfg.Section("server").Key("SSH_DOMAIN").SetValue(form.Domain)
+	cfg.Section("server").Key("DOMAIN").SetValue(form.Domain)
 	cfg.Section("server").Key("HTTP_PORT").SetValue(form.HTTPPort)
 	cfg.Section("server").Key("ROOT_URL").SetValue(form.AppURL)
 

routers/repo/http.go

@@ -22,12 +22,37 @@ import (
 	"code.gitea.io/gitea/modules/context"
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/setting"
+
+	"github.com/Unknwon/com"
 )
 
+func composeGoGetImport(owner, repo, sub string) string {
+	return path.Join(setting.Domain, setting.AppSubURL, owner, repo, sub)
+}
+
+// earlyResponseForGoGetMeta responses appropriate go-get meta with status 200
+// if user does not have actual access to the requested repository,
+// or the owner or repository does not exist at all.
+// This is particular a workaround for "go get" command which does not respect
+// .netrc file.
+func earlyResponseForGoGetMeta(ctx *context.Context, username, reponame, subpath string) {
+	ctx.PlainText(200, []byte(com.Expand(`<meta name="go-import" content="{GoGetImport} git {CloneLink}">`,
+		map[string]string{
+			"GoGetImport": composeGoGetImport(username, reponame, subpath),
+			"CloneLink":   models.ComposeHTTPSCloneURL(username, reponame),
+		})))
+}
+
 // HTTP implmentation git smart HTTP protocol
 func HTTP(ctx *context.Context) {
 	username := ctx.Params(":username")
 	reponame := strings.TrimSuffix(ctx.Params(":reponame"), ".git")
+	subpath := ctx.Params("*")
+
+	if ctx.Query("go-get") == "1" {
+		earlyResponseForGoGetMeta(ctx, username, reponame, subpath)
+		return
+	}
 
 	var isPull bool
 	service := ctx.Query("service")