filter: use filepath.Match to maintain consistency with other pattern

matching in podman

Following commit ensures that we maintain consistency with how pattern
matching is being carried out everywhere else in podman.

Switch from `regexp` to `filepath.Match`

For example https://github.com/containers/common/blob/main/libimage/filters.go#L162

[NO NEW TESTS NEEDED]

Signed-off-by: Aditya Rajan <arajan@redhat.com>

pkg/util/filters.go

@@ -4,7 +4,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"net/http"
-	"regexp"
+	"path/filepath"
 	"strings"
 	"time"
 
@@ -95,24 +95,13 @@ func PrepareFilters(r *http.Request) (*map[string][]string, error) {
 	return &filterMap, nil
 }
 
-func wildCardToRegexp(pattern string) string {
-	var result strings.Builder
-	for i, literal := range strings.Split(pattern, "*") {
-		// Replace * with .*
-		if i > 0 {
-			result.WriteString(".*")
-		}
-		// Quote any regular expression meta characters in the
-		// literal text.
-		result.WriteString(regexp.QuoteMeta(literal))
-	}
-	return result.String()
-}
-
 func matchPattern(pattern string, value string) bool {
 	if strings.Contains(pattern, "*") {
-		result, _ := regexp.MatchString(wildCardToRegexp(pattern), value)
-		return result
+		filter := fmt.Sprintf("*%s*", pattern)
+		filter = strings.ReplaceAll(filter, string(filepath.Separator), "|")
+		newName := strings.ReplaceAll(value, string(filepath.Separator), "|")
+		match, _ := filepath.Match(filter, newName)
+		return match
 	}
 	return false
 }