From 1aab13dca3e5226df2977add9d96214084bcc298 Mon Sep 17 00:00:00 2001
From: xiehuanyi <74809554+xiehuanyi@users.noreply.github.com>
Date: Sat, 10 Oct 2026 14:30:36 +0300
Subject: [PATCH] Reject trailing newlines in MAC addresses and regional
 identifiers

---
 src/validators/i18n/fi.py     |  4 ++--
 src/validators/i18n/fr.py     |  2 +-
 src/validators/i18n/ind.py    |  2 +-
 src/validators/mac_address.py |  2 +-
 tests/test_complete_values.py | 31 +++++++++++++++++++++++++++++++
 5 files changed, 36 insertions(+), 5 deletions(-)
 create mode 100644 tests/test_complete_values.py

diff --git a/src/validators/i18n/fi.py b/src/validators/i18n/fi.py
index 534d7dc2..12fb281b 100644
--- a/src/validators/i18n/fi.py
+++ b/src/validators/i18n/fi.py
@@ -54,7 +54,7 @@ def fi_business_id(value: str, /):
     """
     if not value:
         return False
-    if not re.match(_business_id_pattern(), value):
+    if not re.fullmatch(_business_id_pattern(), value):
         return False
     factors = [7, 9, 10, 5, 8, 4, 2]
     numbers = map(int, value[:7])
@@ -92,7 +92,7 @@ def fi_ssn(value: str, /, *, allow_temporal_ssn: bool = True):
     if not value:
         return False
     ssn_check_marks = "0123456789ABCDEFHJKLMNPRSTUVWXY"
-    if not (result := re.match(_ssn_pattern(ssn_check_marks), value)):
+    if not (result := re.fullmatch(_ssn_pattern(ssn_check_marks), value)):
         return False
     gd = result.groupdict()
     checksum = int(gd["date"] + gd["serial"])
diff --git a/src/validators/i18n/fr.py b/src/validators/i18n/fr.py
index 10a5a2b1..e7c29332 100644
--- a/src/validators/i18n/fr.py
+++ b/src/validators/i18n/fr.py
@@ -93,7 +93,7 @@ def fr_ssn(value: str):
     """
     if not value:
         return False
-    matched = re.match(_ssn_pattern(), value)
+    matched = re.fullmatch(_ssn_pattern(), value)
     if not matched:
         return False
     groups = list(matched.groups())
diff --git a/src/validators/i18n/ind.py b/src/validators/i18n/ind.py
index 6ec973ea..29a58e2d 100644
--- a/src/validators/i18n/ind.py
+++ b/src/validators/i18n/ind.py
@@ -24,7 +24,7 @@ def ind_aadhar(value: str):
         (Literal[True]): If `value` is a valid aadhar card number.
         (ValidationError): If `value` is an invalid aadhar card number.
     """
-    return re.match(r"^[2-9]{1}\d{3}\s\d{4}\s\d{4}$", value)
+    return re.fullmatch(r"^[2-9]{1}\d{3}\s\d{4}\s\d{4}$", value)
 
 
 @validator
diff --git a/src/validators/mac_address.py b/src/validators/mac_address.py
index 59542606..0173d9e8 100644
--- a/src/validators/mac_address.py
+++ b/src/validators/mac_address.py
@@ -33,4 +33,4 @@ def mac_address(value: str, /):
     if ":" in value and "-" in value:
         return False
 
-    return re.match(r"^([0-9A-Fa-f]{2}[:-]){5}([0-9A-Fa-f]{2})$", value) if value else False
+    return re.fullmatch(r"^([0-9A-Fa-f]{2}[:-]){5}([0-9A-Fa-f]{2})$", value) if value else False
diff --git a/tests/test_complete_values.py b/tests/test_complete_values.py
new file mode 100644
index 00000000..8e1589a7
--- /dev/null
+++ b/tests/test_complete_values.py
@@ -0,0 +1,31 @@
+"""Validate complete MAC addresses and regional identifiers."""
+
+from typing import Callable
+
+import pytest
+
+from validators import ValidationError, mac_address
+from validators.i18n.fi import fi_business_id, fi_ssn
+from validators.i18n.fr import fr_ssn
+from validators.i18n.ind import ind_aadhar
+
+
+@pytest.mark.parametrize(
+    "validate,value",
+    [
+        (mac_address, "01:23:45:67:ab:CD"),
+        (mac_address, "01-23-45-67-ab-CD"),
+        (fi_business_id, "0112038-9"),
+        (fi_ssn, "010101-0101"),
+        (fr_ssn, "1 84 12 76 451 089 46"),
+        (fr_ssn, "1 84 12 76 451 089"),
+        (ind_aadhar, "3675 9834 6015"),
+    ],
+)
+@pytest.mark.parametrize("suffix", ["", "\n", "\r\n", " ", "\nextra"])
+def test_complete_identifier(validate: Callable[[str], object], value: str, suffix: str):
+    """Accept the identifier alone and reject any trailing characters."""
+    if suffix:
+        assert isinstance(validate(value + suffix), ValidationError)
+    else:
+        assert validate(value) is True