fix `core list --all` sometimes crashing (#1519)

* fix packages being added to the package manager even if they were not respecting the specification

* add test to check if if the bug it's fixed

* fix platform release being nil and causing panic with indexes not compliant with specs

* add test to check if the bug is fixed

* add comments and optimize the code a little bit

* Apply suggestions from code review
Co-authored-by: per1234 <accounts@perglass.com>
Co-authored-by: per1234 <accounts@perglass.com>

arduino/cores/packagemanager/loader.go

@@ -145,6 +145,10 @@ func (pm *PackageManager) LoadHardwareFromDirectory(path *paths.Path) []*status.
 				statuses = append(statuses, errs...)
 			}
 		}
+		// If the Package does not contain Platforms or Tools we remove it since does not contain anything valuable
+		if len(targetPackage.Platforms) == 0 && len(targetPackage.Tools) == 0 {
+			delete(pm.Packages, packager)
+		}
 	}
 
 	return statuses
@@ -262,7 +266,6 @@ func (pm *PackageManager) loadPlatform(targetPackage *cores.Package, platformPat
 		// case: ARCHITECTURE/VERSION/boards.txt
 		// let's dive into VERSION directories
 
-		platform := targetPackage.GetOrCreatePlatform(architecture)
 		versionDirs, err := platformPath.ReadDir()
 		if err != nil {
 			return status.Newf(codes.FailedPrecondition, tr("reading dir %[1]s: %[2]s"), platformPath, err)
@@ -280,6 +283,7 @@ func (pm *PackageManager) loadPlatform(targetPackage *cores.Package, platformPat
 			if err != nil {
 				return status.Newf(codes.FailedPrecondition, tr("invalid version dir %[1]s: %[2]s"), versionDir, err)
 			}
+			platform := targetPackage.GetOrCreatePlatform(architecture)
 			release := platform.GetOrCreateRelease(version)
 			if err := pm.loadPlatformRelease(release, versionDir); err != nil {
 				return status.Newf(codes.FailedPrecondition, tr("loading platform release %[1]s: %[2]s"), release, err)

commands/core/list.go

@@ -38,18 +38,22 @@ func GetPlatforms(req *rpc.PlatformListRequest) ([]*rpc.Platform, error) {
 		for _, platform := range targetPackage.Platforms {
 			platformRelease := packageManager.GetInstalledPlatformRelease(platform)
 
+			// The All flags adds to the list of installed platforms the installable platforms (from the indexes)
 			// If both All and UpdatableOnly are set All takes precedence
 			if req.All {
 				installedVersion := ""
-				if platformRelease == nil {
+				if platformRelease == nil { // if the platform is not installed
 					platformRelease = platform.GetLatestRelease()
 				} else {
 					installedVersion = platformRelease.Version.String()
 				}
-				rpcPlatform := commands.PlatformReleaseToRPC(platform.GetLatestRelease())
-				rpcPlatform.Installed = installedVersion
-				res = append(res, rpcPlatform)
-				continue
+				// it could happen, especially with indexes not perfectly compliant with specs that a platform do not contain a valid release
+				if platformRelease != nil {
+					rpcPlatform := commands.PlatformReleaseToRPC(platformRelease)
+					rpcPlatform.Installed = installedVersion
+					res = append(res, rpcPlatform)
+					continue
+				}
 			}
 
 			if platformRelease != nil {
@@ -58,10 +62,9 @@ func GetPlatforms(req *rpc.PlatformListRequest) ([]*rpc.Platform, error) {
 					return nil, &arduino.PlatformNotFoundError{Platform: platform.String(), Cause: fmt.Errorf(tr("the platform has no releases"))}
 				}
 
-				if req.UpdatableOnly {
-					if latest == platformRelease {
-						continue
-					}
+				// show only the updatable platforms
+				if req.UpdatableOnly && latest == platformRelease {
+					continue
 				}
 
 				rpcPlatform := commands.PlatformReleaseToRPC(platformRelease)

test/test_core.py

@@ -777,3 +777,21 @@ def test_core_list_outdated_core(run_command):
     latest_version = semver.parse_version_info(samd_core["latest"])
     # Installed version must be older than latest
     assert installed_version.compare(latest_version) == -1
+
+
+def test_core_loading_package_manager(run_command, data_dir):
+    # Create empty architecture folder (this condition is normally produced by `core uninstall`)
+    (Path(data_dir) / "packages" / "foovendor" / "hardware" / "fooarch").mkdir(parents=True)
+
+    result = run_command(["core", "list", "--all", "--format", "json"])
+    assert result.ok  # this should not make the cli crash
+
+
+def test_core_index_without_checksum(run_command):
+    assert run_command(["config", "init", "--dest-dir", "."])
+    url = "https://raw.githubusercontent.com/keyboardio/ArduinoCore-GD32-Keyboardio/ae5938af2f485910729e7d27aa233032a1cb4734/package_gd32_index.json"  # noqa: E501
+    assert run_command(["config", "add", "board_manager.additional_urls", url])
+
+    assert run_command(["core", "update-index"])
+    result = run_command(["core", "list", "--all"])
+    assert result.ok  # this should not make the cli crash