From 3d426607a8e04f79fb4ee4393e92c4838539bd23 Mon Sep 17 00:00:00 2001
From: Adrian Holovaty <adrian@holovaty.com>
Date: Fri, 23 Sep 2005 02:02:15 +0000
Subject: [PATCH] Fixed #264 -- Added django.core.validators.isValidIPAddress4.
 Thanks, Hugo and Simon

git-svn-id: http://code.djangoproject.com/svn/django/trunk@671 bcc190cf-cafb-0310-a4f2-bffc1f526a37
---
 django/core/formfields.py | 11 +++++++++++
 django/core/validators.py |  8 ++++++++
 2 files changed, 19 insertions(+)

diff --git a/django/core/formfields.py b/django/core/formfields.py
index 3bc315161f..5056dd7bad 100644
--- a/django/core/formfields.py
+++ b/django/core/formfields.py
@@ -687,6 +687,17 @@ class URLField(TextField):
             raise validators.CriticalValidationError, e.messages
 
 class IPAddressField(TextField):
+    def __init__(self, field_name, length=15, maxlength=15, is_required=False, validator_list=[]):
+        validator_list = [self.isValidIPAddress] + validator_list
+        TextField.__init__(self, field_name, length=length, maxlength=maxlength,
+            is_required=is_required, validator_list=validator_list)
+
+    def isValidIPAddress(self, field_data, all_data):
+        try:
+            validators.isValidIPAddress4(field_data, all_data)
+        except validators.ValidationError, e:
+            raise validators.CriticalValidationError, e.messages
+
     def html2python(data):
         return data or None
     html2python = staticmethod(html2python)
diff --git a/django/core/validators.py b/django/core/validators.py
index ee440e1140..6714bfda3e 100644
--- a/django/core/validators.py
+++ b/django/core/validators.py
@@ -19,6 +19,7 @@ ansi_time_re = re.compile('^%s$' % _timere)
 ansi_datetime_re = re.compile('^%s %s$' % (_datere, _timere))
 email_re = re.compile(r'^[-\w.+]+@\w[\w.-]+$')
 integer_re = re.compile(r'^-?\d+$')
+ip4_re = re.compile(r'^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$')
 phone_re = re.compile(r'^[A-PR-Y0-9]{3}-[A-PR-Y0-9]{3}-[A-PR-Y0-9]{4}$', re.IGNORECASE)
 url_re = re.compile(r'^http://\S+$')
 
@@ -85,6 +86,13 @@ def isCommaSeparatedEmailList(field_data, all_data):
         except ValidationError:
             raise ValidationError, "Enter valid e-mail addresses separated by commas."
 
+def isValidIPAddress4(field_data, all_data):
+    if ip4_re.search(field_data):
+        valid_parts = [el for el in field_data.split('.') if 0 <= int(el) <= 255]
+        if len(valid_parts) == 4:
+            return
+    raise validators.ValidationError, "Please enter a valid IP address."
+
 def isNotEmpty(field_data, all_data):
     if field_data.strip() == '':
         raise ValidationError, "Empty values are not allowed here."