Improved flexibility of XMP parsing

Tests/test_file_jpeg.py

@@ -882,7 +882,10 @@ def read(n=-1):
     def test_getxmp(self):
         with Image.open("Tests/images/xmp_test.jpg") as im:
             if ElementTree is None:
-                with pytest.warns(UserWarning):
+                with pytest.warns(
+                    UserWarning,
+                    match="XMP data cannot be read without defusedxml dependency",
+                ):
                     assert im.getxmp() == {}
             else:
                 xmp = im.getxmp()
@@ -905,6 +908,28 @@ def test_getxmp(self):
             with Image.open("Tests/images/hopper.jpg") as im:
                 assert im.getxmp() == {}
 
+    def test_getxmp_no_prefix(self):
+        with Image.open("Tests/images/xmp_no_prefix.jpg") as im:
+            if ElementTree is None:
+                with pytest.warns(
+                    UserWarning,
+                    match="XMP data cannot be read without defusedxml dependency",
+                ):
+                    assert im.getxmp() == {}
+            else:
+                assert im.getxmp() == {"xmpmeta": {"key": "value"}}
+
+    def test_getxmp_padded(self):
+        with Image.open("Tests/images/xmp_padded.jpg") as im:
+            if ElementTree is None:
+                with pytest.warns(
+                    UserWarning,
+                    match="XMP data cannot be read without defusedxml dependency",
+                ):
+                    assert im.getxmp() == {}
+            else:
+                assert im.getxmp() == {"xmpmeta": None}
+
     @pytest.mark.timeout(timeout=1)
     def test_eof(self):
         # Even though this decoder never says that it is finished

Tests/test_file_png.py

@@ -665,7 +665,10 @@ def test_plte_length(self, tmp_path):
     def test_getxmp(self):
         with Image.open("Tests/images/color_snakes.png") as im:
             if ElementTree is None:
-                with pytest.warns(UserWarning):
+                with pytest.warns(
+                    UserWarning,
+                    match="XMP data cannot be read without defusedxml dependency",
+                ):
                     assert im.getxmp() == {}
             else:
                 xmp = im.getxmp()

Tests/test_file_tiff.py

@@ -734,7 +734,10 @@ def test_discard_icc_profile(self, tmp_path):
     def test_getxmp(self):
         with Image.open("Tests/images/lab.tif") as im:
             if ElementTree is None:
-                with pytest.warns(UserWarning):
+                with pytest.warns(
+                    UserWarning,
+                    match="XMP data cannot be read without defusedxml dependency",
+                ):
                     assert im.getxmp() == {}
             else:
                 xmp = im.getxmp()

Tests/test_file_webp_metadata.py

@@ -118,7 +118,10 @@ def test_getxmp():
 
     with Image.open("Tests/images/flower2.webp") as im:
         if ElementTree is None:
-            with pytest.warns(UserWarning):
+            with pytest.warns(
+                UserWarning,
+                match="XMP data cannot be read without defusedxml dependency",
+            ):
                 assert im.getxmp() == {}
         else:
             assert (

src/PIL/Image.py

@@ -1385,7 +1385,7 @@ def getextrema(self):
 
     def _getxmp(self, xmp_tags):
         def get_name(tag):
-            return tag.split("}")[1]
+            return re.sub("^{[^}]+}", "", tag)
 
         def get_value(element):
             value = {get_name(k): v for k, v in element.attrib.items()}

src/PIL/JpegImagePlugin.py

@@ -496,7 +496,7 @@ def getxmp(self):
 
         for segment, content in self.applist:
             if segment == "APP1":
-                marker, xmp_tags = content.rsplit(b"\x00", 1)
+                marker, xmp_tags = content.split(b"\x00")[:2]
                 if marker == b"http://ns.adobe.com/xap/1.0/":
                     return self._getxmp(xmp_tags)
         return {}