Fix package access for admins and inactive users (#21580)

I noticed an admin is not allowed to upload packages for other users
because `ctx.IsSigned` was not set.
I added a check for `user.IsActive` and `user.ProhibitLogin` too because
both was not checked. Tests enforce this now.

Co-authored-by: Lauris BH <[email protected]>

Author: KN4CK3R

Diff for: modules/context/package.go

@@ -85,12 +85,15 @@ func packageAssignment(ctx *Context, errCb func(int, string, interface{})) {
 }
 
 func determineAccessMode(ctx *Context) (perm.AccessMode, error) {
-	accessMode := perm.AccessModeNone
-
 	if setting.Service.RequireSignInView && ctx.Doer == nil {
-		return accessMode, nil
+		return perm.AccessModeNone, nil
 	}
 
+	if ctx.Doer != nil && !ctx.Doer.IsGhost() && (!ctx.Doer.IsActive || ctx.Doer.ProhibitLogin) {
+		return perm.AccessModeNone, nil
+	}
+
+	accessMode := perm.AccessModeNone
 	if ctx.Package.Owner.IsOrganization() {
 		org := organization.OrgFromUser(ctx.Package.Owner)
 

Diff for: routers/api/packages/api.go

@@ -58,6 +58,7 @@ func Routes(ctx gocontext.Context) *web.Route {
 	authGroup := auth.NewGroup(authMethods...)
 	r.Use(func(ctx *context.Context) {
 		ctx.Doer = authGroup.Verify(ctx.Req, ctx.Resp, ctx, ctx.Session)
+		ctx.IsSigned = ctx.Doer != nil
 	})
 
 	r.Group("/{username}", func() {
@@ -316,6 +317,7 @@ func ContainerRoutes(ctx gocontext.Context) *web.Route {
 	authGroup := auth.NewGroup(authMethods...)
 	r.Use(func(ctx *context.Context) {
 		ctx.Doer = authGroup.Verify(ctx.Req, ctx.Resp, ctx, ctx.Session)
+		ctx.IsSigned = ctx.Doer != nil
 	})
 
 	r.Get("", container.ReqContainerAccess, container.DetermineSupport)

Diff for: tests/integration/api_packages_container_test.go

@@ -471,6 +471,10 @@ func TestPackageContainer(t *testing.T) {
 
 				assert.Equal(t, fmt.Sprintf("%d", len(blobContent)), resp.Header().Get("Content-Length"))
 				assert.Equal(t, blobDigest, resp.Header().Get("Docker-Content-Digest"))
+
+				req = NewRequest(t, "HEAD", fmt.Sprintf("%s/blobs/%s", url, blobDigest))
+				addTokenAuthHeader(req, anonymousToken)
+				MakeRequest(t, req, http.StatusOK)
 			})
 
 			t.Run("GetBlob", func(t *testing.T) {

Diff for: tests/integration/api_packages_test.go

@@ -25,6 +25,7 @@ import (
 
 func TestPackageAPI(t *testing.T) {
 	defer tests.PrepareTestEnv(t)()
+
 	user := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 4})
 	session := loginUser(t, user.Name)
 	token := getTokenForLoggedInUser(t, session)
@@ -144,6 +145,27 @@ func TestPackageAPI(t *testing.T) {
 	})
 }
 
+func TestPackageAccess(t *testing.T) {
+	defer tests.PrepareTestEnv(t)()
+
+	admin := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 1})
+	user := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 5})
+	inactive := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 9})
+
+	uploadPackage := func(doer, owner *user_model.User, expectedStatus int) {
+		url := fmt.Sprintf("/api/packages/%s/generic/test-package/1.0/file.bin", owner.Name)
+		req := NewRequestWithBody(t, "PUT", url, bytes.NewReader([]byte{1}))
+		AddBasicAuthHeader(req, doer.Name)
+		MakeRequest(t, req, expectedStatus)
+	}
+
+	uploadPackage(user, inactive, http.StatusUnauthorized)
+	uploadPackage(inactive, inactive, http.StatusUnauthorized)
+	uploadPackage(inactive, user, http.StatusUnauthorized)
+	uploadPackage(admin, inactive, http.StatusCreated)
+	uploadPackage(admin, user, http.StatusCreated)
+}
+
 func TestPackageCleanup(t *testing.T) {
 	defer tests.PrepareTestEnv(t)()