✨ Give low importance to github-owned actions (#802)

* Different calculation between github and non-github actions

* Add test case for non github action

* Modify existing test as score calculation has changed

checks/pinned_dependencies.go

@@ -58,6 +58,13 @@ type stringWithLine struct {
 	Line  int
 }
 
+// Structure to host information about pinned github
+// or third party dependencies
+type worklowPinningResult struct {
+	thirdParties pinnedResult
+	gitHubOwned  pinnedResult
+}
+
 func (ws *stringWithLine) UnmarshalYAML(value *yaml.Node) error {
 	err := value.Decode(&ws.Value)
 	if err != nil {
@@ -161,6 +168,37 @@ func addPinnedResult(r *pinnedResult, to bool) {
 	}
 }
 
+func dataAsWorkflowResultPointer(data FileCbData) *worklowPinningResult {
+	pdata, ok := data.(*worklowPinningResult)
+	if !ok {
+		// panic if it is not correct type
+		panic("type need to be of worklowPinningResult")
+	}
+	return pdata
+}
+
+func createReturnValuesForGitHubActionsWorkflowPinned(r worklowPinningResult, infoMsg string, dl checker.DetailLogger, err error) (int, error) {
+	if err != nil {
+		return checker.InconclusiveResultScore, err
+	}
+
+	score := checker.MinResultScore
+
+	if r.gitHubOwned != notPinned {
+		score += 2
+	}
+
+	if r.thirdParties != notPinned {
+		score += 8
+	}
+
+	if r.gitHubOwned == pinned {
+		dl.Info(infoMsg)
+	}
+
+	return score, nil
+}
+
 func dataAsResultPointer(data FileCbData) *pinnedResult {
 	pdata, ok := data.(*pinnedResult)
 	if !ok {
@@ -496,31 +534,32 @@ func validateGitHubWorkflowIsFreeOfInsecureDownloads(pathfn string, content []by
 
 // Check pinning of github actions in workflows.
 func isGitHubActionsWorkflowPinned(c *checker.CheckRequest) (int, error) {
-	var r pinnedResult
+	var r worklowPinningResult
 	err := CheckFilesContent(".github/workflows/*", true, c, validateGitHubActionWorkflow, &r)
 	return createReturnForIsGitHubActionsWorkflowPinned(r, c.Dlogger, err)
 }
 
 // Create the result.
-func createReturnForIsGitHubActionsWorkflowPinned(r pinnedResult, dl checker.DetailLogger, err error) (int, error) {
-	return createReturnValues(r,
+func createReturnForIsGitHubActionsWorkflowPinned(r worklowPinningResult, dl checker.DetailLogger, err error) (int, error) {
+	return createReturnValuesForGitHubActionsWorkflowPinned(r,
 		"GitHub actions are pinned",
 		dl, err)
 }
 
 func testIsGitHubActionsWorkflowPinned(pathfn string, content []byte, dl checker.DetailLogger) (int, error) {
-	var r pinnedResult
+	var r worklowPinningResult
 	_, err := validateGitHubActionWorkflow(pathfn, content, dl, &r)
 	return createReturnForIsGitHubActionsWorkflowPinned(r, dl, err)
 }
 
 // Check file content.
 func validateGitHubActionWorkflow(pathfn string, content []byte,
 	dl checker.DetailLogger, data FileCbData) (bool, error) {
-	pdata := dataAsResultPointer(data)
+	pdata := dataAsWorkflowResultPointer(data)
 
 	if !CheckFileContainsCommands(content, "#") {
-		addPinnedResult(pdata, true)
+		addWorkflowPinnedResult(pdata, true, true)
+		addWorkflowPinnedResult(pdata, true, true)
 		return true, nil
 	}
 
@@ -533,7 +572,6 @@ func validateGitHubActionWorkflow(pathfn string, content []byte,
 	}
 
 	hashRegex := regexp.MustCompile(`^.*@[a-f\d]{40,}`)
-	ret := true
 	for jobName, job := range workflow.Jobs {
 		if len(job.Name) > 0 {
 			jobName = job.Name
@@ -544,20 +582,36 @@ func validateGitHubActionWorkflow(pathfn string, content []byte,
 				// Example: action-name@hash
 				match := hashRegex.Match([]byte(step.Uses.Value))
 				if !match {
-					ret = false
 					dl.Warn3(&checker.LogMessage{
 						Path: pathfn, Type: checker.FileTypeSource, Offset: step.Uses.Line, Snippet: step.Uses.Value,
 						Text: fmt.Sprintf("unpinned dependency detected (job '%v')", jobName),
 					})
 				}
+
+				githubOwned := isGitHubOwnedAction(step.Uses.Value)
+				addWorkflowPinnedResult(pdata, match, githubOwned)
 			}
 		}
 	}
 
-	addPinnedResult(pdata, ret)
 	return true, nil
 }
 
+// isGitHubOwnedAction check github specific action
+func isGitHubOwnedAction(v string) bool {
+	a := strings.HasPrefix(v, "actions/")
+	c := strings.HasPrefix(v, "github/")
+	return a || c
+}
+
+func addWorkflowPinnedResult(w *worklowPinningResult, to bool, isGitHub bool) {
+	if isGitHub {
+		addPinnedResult(&w.gitHubOwned, to)
+	} else {
+		addPinnedResult(&w.thirdParties, to)
+	}
+}
+
 // Check presence of lock files thru validatePackageManagerFile().
 func isPackageManagerLockFilePresent(c *checker.CheckRequest) (int, error) {
 	var r pinnedResult

checks/pinned_dependencies_test.go

@@ -70,7 +70,7 @@ func TestGithubWorkflowPinning(t *testing.T) {
 			filename: "./testdata/workflow-not-pinned.yaml",
 			expected: scut.TestReturn{
 				Error:         nil,
-				Score:         checker.MinResultScore,
+				Score:         checker.MaxResultScore - 2,
 				NumberOfWarn:  1,
 				NumberOfInfo:  0,
 				NumberOfDebug: 0,
@@ -104,6 +104,64 @@ func TestGithubWorkflowPinning(t *testing.T) {
 	}
 }
 
+func TestNonGithubWorkflowPinning(t *testing.T) {
+	t.Parallel()
+
+	tests := []struct {
+		name     string
+		filename string
+		expected scut.TestReturn
+	}{
+		{
+			name:     "Pinned non-github workflow",
+			filename: "./testdata/workflow-non-github-pinned.yaml",
+			expected: scut.TestReturn{
+				Error:         nil,
+				Score:         checker.MaxResultScore,
+				NumberOfWarn:  0,
+				NumberOfInfo:  0,
+				NumberOfDebug: 0,
+			},
+		},
+		{
+			name:     "Pinned github workflow",
+			filename: "./testdata/workflow-non-github-not-pinned.yaml",
+			expected: scut.TestReturn{
+				Error:         nil,
+				Score:         checker.MaxResultScore - 8,
+				NumberOfWarn:  1,
+				NumberOfInfo:  1,
+				NumberOfDebug: 0,
+			},
+		},
+	}
+	for _, tt := range tests {
+		tt := tt // Re-initializing variable so it is not changed while executing the closure below
+		t.Run(tt.name, func(t *testing.T) {
+			t.Parallel()
+			var content []byte
+			var err error
+			if tt.filename == "" {
+				content = make([]byte, 0)
+			} else {
+				content, err = ioutil.ReadFile(tt.filename)
+				if err != nil {
+					panic(fmt.Errorf("cannot read file: %w", err))
+				}
+			}
+			dl := scut.TestDetailLogger{}
+			s, e := testIsGitHubActionsWorkflowPinned(tt.filename, content, &dl)
+			actual := checker.CheckResult{
+				Score:  s,
+				Error2: e,
+			}
+			if !scut.ValidateTestReturn(t, tt.name, &tt.expected, &actual, &dl) {
+				t.Fail()
+			}
+		})
+	}
+}
+
 func TestDockerfilePinning(t *testing.T) {
 	t.Parallel()
 	tests := []struct {
@@ -624,7 +682,7 @@ func TestGitHubWorkflowUsesLineNumber(t *testing.T) {
 				t.Errorf("cannot read file: %w", err)
 			}
 			dl := scut.TestDetailLogger{}
-			var pinned pinnedResult
+			var pinned worklowPinningResult
 			_, err = validateGitHubActionWorkflow(tt.filename, content, &dl, &pinned)
 			if err != nil {
 				t.Errorf("error during validateGitHubActionWorkflow: %w", err)

checks/testdata/workflow-non-github-not-pinned.yaml

@@ -0,0 +1,48 @@
+# Copyright 2021 Security Scorecard Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+on:
+  push:
+    paths:
+    - 'source/common/**'
+  pull_request:
+
+jobs:
+  CodeQL-Build:
+
+    strategy:
+      fail-fast: false
+
+    # CodeQL runs on ubuntu-latest and windows-latest
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repository
+      uses: action/checkout@daadedc81d5f9d3c06d2c92f49202a3cc2b919ba
+      with:
+        # We must fetch at least the immediate parents so that if this is
+        # a pull request then we can checkout the head.
+        fetch-depth: 2
+
+    # Initializes the CodeQL tools for scanning.
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@daadedc81d5f9d3c06d2c92f49202a3cc2b919ba # some comment
+      # Override language selection by uncommenting this and choosing your languages
+      with:
+         languages: cpp
+
+    # acme something
+    - name: Initialize Acme Something
+      uses: acme/something/init@v1
+      with:
+        languages: c

checks/testdata/workflow-non-github-pinned.yaml

@@ -0,0 +1,42 @@
+# Copyright 2021 Security Scorecard Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+on:
+  push:
+    paths:
+    - 'source/common/**'
+  pull_request:
+
+jobs:
+  CodeQL-Build:
+
+    strategy:
+      fail-fast: false
+
+    # CodeQL runs on ubuntu-latest and windows-latest
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repository
+      uses: acme/checkout@daadedc81d5f9d3c06d2c92f49202a3cc2b919ba
+      with:
+        # We must fetch at least the immediate parents so that if this is
+        # a pull request then we can checkout the head.
+        fetch-depth: 2
+
+    # Initializes the CodeQL tools for scanning.
+    - name: Initialize CodeQL
+      uses: acme/codeql-action/init@daadedc81d5f9d3c06d2c92f49202a3cc2b919ba # some comment
+      # Override language selection by uncommenting this and choosing your languages
+      with:
+         languages: cpp