From 6709b7d5d1b8643856a3e0f864c0657a927f427a Mon Sep 17 00:00:00 2001
From: Ezio Melotti <ezio.melotti@gmail.com>
Date: Sat, 19 May 2012 17:15:19 +0300
Subject: [PATCH] #14072: Fix parsing of tel URIs in urlparse by making the
 check for ports stricter.

---
 Lib/test/test_urlparse.py |  7 +++++++
 Lib/urllib/parse.py       | 12 ++++++------
 Misc/NEWS                 |  3 +++
 3 files changed, 16 insertions(+), 6 deletions(-)

diff --git a/Lib/test/test_urlparse.py b/Lib/test/test_urlparse.py
index 578438159d8..73150cffa65 100755
--- a/Lib/test/test_urlparse.py
+++ b/Lib/test/test_urlparse.py
@@ -806,6 +806,13 @@ class UrlParseTestCase(unittest.TestCase):
                           encoding='utf-8')
         self.assertRaises(TypeError, urllib.parse.quote, b'foo', errors='strict')
 
+    def test_issue14072(self):
+        p1 = urllib.parse.urlsplit('tel:+31-641044153')
+        self.assertEqual(p1.scheme, 'tel')
+        self.assertEqual(p1.path, '+31-641044153')
+        p2 = urllib.parse.urlsplit('tel:+31641044153')
+        self.assertEqual(p2.scheme, 'tel')
+        self.assertEqual(p2.path, '+31641044153')
 
 def test_main():
     support.run_unittest(UrlParseTestCase)
diff --git a/Lib/urllib/parse.py b/Lib/urllib/parse.py
index 47b7962662a..92170ad0a24 100644
--- a/Lib/urllib/parse.py
+++ b/Lib/urllib/parse.py
@@ -338,12 +338,12 @@ def urlsplit(url, scheme='', allow_fragments=True):
             if c not in scheme_chars:
                 break
         else:
-            try:
-                # make sure "url" is not actually a port number (in which case
-                # "scheme" is really part of the path
-                _testportnum = int(url[i+1:])
-            except ValueError:
-                scheme, url = url[:i].lower(), url[i+1:]
+            # make sure "url" is not actually a port number (in which case
+            # "scheme" is really part of the path)
+            rest = url[i+1:]
+            if not rest or any(c not in '0123456789' for c in rest):
+                # not a port number
+                scheme, url = url[:i].lower(), rest
 
     if url[:2] == '//':
         netloc, url = _splitnetloc(url, 2)
diff --git a/Misc/NEWS b/Misc/NEWS
index 4cbea2463a9..ead1bbf26b8 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -66,6 +66,9 @@ Library
 - Issue #14721: Send the correct 'Content-length: 0' header when the body is an
   empty string ''. Initial Patch contributed by Arve Knudsen.
 
+- Issue #14072: Fix parsing of 'tel' URIs in urlparse by making the check for
+  ports stricter.
+
 - Issue #9374: Generic parsing of query and fragment portions of url for any
   scheme. Supported both by RFC3986 and RFC2396.