QueryUnescape DSN ConnectionAttribute value

Author: zhangyangyu

Diff for: driver_test.go

@@ -3367,9 +3367,12 @@ func TestConnectionAttributes(t *testing.T) {
 
 	attr1 := "attr1"
 	value1 := "value1"
-	attr2 := "foo"
-	value2 := "boo"
-	dsn += fmt.Sprintf("&connectionAttributes=%s:%s,%s:%s", attr1, value1, attr2, value2)
+	attr2 := "fo/o"
+	value2 := "bo/o"
+	dsn += fmt.Sprintf(
+		"&connectionAttributes=%s:%s,%s:%s",
+		attr1, value1, url.QueryEscape(attr2), url.QueryEscape(value2),
+	)
 
 	var db *sql.DB
 	if _, err := ParseDSN(dsn); err != errInvalidDSNUnsafeCollation {
@@ -3395,6 +3398,17 @@ func TestConnectionAttributes(t *testing.T) {
 	}
 	rows.Close()
 
+	rows = dbt.mustQuery(queryString, attr1)
+	if rows.Next() {
+		rows.Scan(&attrValue)
+		if attrValue != value1 {
+			dbt.Errorf("expected %q, got %q", value1, attrValue)
+		}
+	} else {
+		dbt.Errorf("no data")
+	}
+	rows.Close()
+
 	rows = dbt.mustQuery(queryString, attr2)
 	if rows.Next() {
 		rows.Scan(&attrValue)

Diff for: dsn.go

@@ -569,7 +569,11 @@ func parseDSNParams(cfg *Config, params string) (err error) {
 
 		// Connection attributes
 		case "connectionAttributes":
-			cfg.ConnectionAttributes = value
+			connectionAttributes, err := url.QueryUnescape(value)
+			if err != nil {
+				return fmt.Errorf("invalid connectionAttributes value: %v", err)
+			}
+			cfg.ConnectionAttributes = connectionAttributes
 
 		default:
 			// lazy init