Add access checker (#40)

Author: fmenezes

.vscode/settings.json

@@ -0,0 +1,3 @@
+{
+    "go.testTags": "unit"
+}

README.md

@@ -29,7 +29,9 @@ Simply calling `codeownerslint` will kick off the cli on the current directory.
 | ------------- | ------------- | ------------------------------------------------------------------------------ |
 | d             | .             | Directory: specifies the directory you want to use to lint the CODEOWNERS file |
 | f             |               | Format: specifies the format you want to return lint results                   |
-
+| t             |               | Token: specifies the Github's token you want to use                            |
+| tt            | bearer        | Token Type: specifies the Github's token type you want to use                  |
+	
 ##### Exit Codes
 
 | Exit Code     | Description                                                      |

checker.go

@@ -39,6 +39,8 @@ func RegisterChecker(name string, checker Checker) error {
 type ValidatorOptions struct {
 	Directory              string
 	CodeownersFileLocation string
+	GithubTokenType        string
+	GithubToken            string
 }
 
 // Checker provides tools for validating CODEOWNER file contents
@@ -132,6 +134,8 @@ func Check(options CheckOptions) ([]CheckResult, error) {
 		validators[checker] = c.NewValidator(ValidatorOptions{
 			Directory:              options.Directory,
 			CodeownersFileLocation: fileLocation,
+			GithubToken:            options.GithubToken,
+			GithubTokenType:        options.GithubTokenType,
 		})
 	}
 

checkers/access.go

@@ -0,0 +1,74 @@
+package checkers
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/fmenezes/codeowners"
+)
+
+const accessCheckerName string = "Access"
+
+func init() {
+	codeowners.RegisterChecker(accessCheckerName, Access{})
+}
+
+// Access represents checker to validate if an owner has access to repo
+type Access struct{}
+
+// NewValidator returns validating capabilities for this checker
+func (c Access) NewValidator(options codeowners.ValidatorOptions) codeowners.Validator {
+	return accessValidator{
+		options:    options,
+		accessMemo: make(map[string]bool),
+	}
+}
+
+type accessValidator struct {
+	options    codeowners.ValidatorOptions
+	accessMemo map[string]bool
+}
+
+// ValidateLine runs this NoOwner's check against each line
+func (v accessValidator) ValidateLine(lineNo int, line string) []codeowners.CheckResult {
+	results := []codeowners.CheckResult{}
+
+	_, owners := codeowners.ParseLine(line)
+
+	if len(owners) == 0 {
+		return nil
+	}
+
+	for _, owner := range owners {
+		if !ownerValid(owner) {
+			continue
+		}
+		writeAccess, found := v.accessMemo[owner]
+		if !found {
+			writeAccess, _ = ownerHasWriteAccess(v.options, owner)
+			v.accessMemo[owner] = writeAccess
+		}
+		if !writeAccess {
+			result := codeowners.CheckResult{
+				Position: codeowners.Position{
+					FilePath:    v.options.CodeownersFileLocation,
+					StartLine:   lineNo,
+					EndLine:     lineNo,
+					StartColumn: strings.Index(line, owner) + 1,
+				},
+				Message:   fmt.Sprintf("Owner '%s' has no write access", owner),
+				Severity:  codeowners.Error,
+				CheckName: accessCheckerName,
+			}
+			result.Position.EndColumn = result.Position.StartColumn + len(owner)
+
+			results = append(results, result)
+		}
+	}
+
+	if len(results) > 0 {
+		return results
+	}
+
+	return nil
+}