Check that git meets version requirements (#1373)

pkg/sources/git/cmd_check.go

@@ -0,0 +1,41 @@
+package git
+
+import (
+	"fmt"
+	"os/exec"
+	"regexp"
+	"strconv"
+	"strings"
+
+	"github.com/go-errors/errors"
+)
+
+// GitCmdCheck checks if git is installed and meets 2.36.6<=x<3.0.0 version requirements.
+func GitCmdCheck() error {
+	if errors.Is(exec.Command("git").Run(), exec.ErrNotFound) {
+		return fmt.Errorf("'git' command not found in $PATH. Make sure git is installed and included in $PATH")
+	}
+
+	// Check the version is greater than or equal to 2.36.6
+	out, err := exec.Command("git", "--version").Output()
+	if err != nil {
+		return fmt.Errorf("failed to check git version: %w", err)
+	}
+
+	// Extract the version string using a regex to find the version numbers
+	r := regexp.MustCompile(`\d+\.\d+\.\d+`)
+	versionStr := r.FindString(string(out))
+	versionParts := strings.Split(versionStr, ".")
+
+	// Parse version numbers
+	major, _ := strconv.Atoi(versionParts[0])
+	minor, _ := strconv.Atoi(versionParts[1])
+	patch, _ := strconv.Atoi(versionParts[2])
+
+	// Compare with version 2.36.6<=x<3.0.0
+	if (major == 2 && minor > 36) || (major == 2 && minor == 36 && patch >= 6) {
+		return nil
+	} else {
+		return fmt.Errorf("git version is %s, but must be greater than or equal to 2.36.6, and less than 3.0.0", versionStr)
+	}
+}

pkg/sources/git/git.go

@@ -337,14 +337,6 @@ func CloneRepoUsingSSH(ctx context.Context, gitUrl string, args ...string) (stri
 	return CloneRepo(ctx, userInfo, gitUrl, args...)
 }
 
-// GitCmdCheck checks if git is installed.
-func GitCmdCheck() error {
-	if errors.Is(exec.Command("git").Run(), exec.ErrNotFound) {
-		return fmt.Errorf("'git' command not found in $PATH. Make sure git is installed and included in $PATH")
-	}
-	return nil
-}
-
 func (s *Git) ScanCommits(ctx context.Context, repo *git.Repository, path string, scanOptions *ScanOptions, chunksChan chan *sources.Chunk) error {
 	if err := GitCmdCheck(); err != nil {
 		return err