[FIX] tools: set correct mimetype for XML files

Currently, the mimetype detection for XML files always returns
`image/svg+xml`.

opw-3062131

closes odoo/odoo#108644

X-original-commit: 6ea9e75d5a14cfe4a846be69e05c3c18f1daffcb
Signed-off-by: Julien Castiaux <juc@odoo.com>

odoo/addons/base/tests/test_mimetypes.py

@@ -27,6 +27,29 @@ ZIP = b"""UEsDBBQACAAIAGFva1AAAAAAAAAAAAAAAAAFACAAdC50eHRVVA0AB5bgaF6W4GheluBoXn
 MAUEsHCAAAAAACAAAAAAAAAFBLAQIUAxQACAAIAGFva1AAAAAAAgAAAAAAAAAFACAAAAAAAAAAAACkgQAAAAB0LnR4dFVUDQAHlu
 BoXpbgaF6W4GhedXgLAAEE6AMAAAToAwAAUEsFBgAAAAABAAEAUwAAAFUAAAAAAA=="""
 
+XML = b"""<?xml version='1.0' encoding='utf-8'?>
+<Document xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="urn:iso:std:iso:20022:tech:xsd:pain.001.001.03">
+  <CstmrCdtTrfInitn>
+    <GrpHdr>
+      <MsgId>123456Odoo S.A.893873733</MsgId>
+      <CreDtTm>2018-11-21T09:47:32</CreDtTm>
+      <NbOfTxs>0</NbOfTxs>
+      <CtrlSum>0.0</CtrlSum>
+      <InitgPty>
+        <Nm>Odoo S.A.</Nm>
+        <Id>
+          <OrgId>
+            <Othr>
+              <Id>BE0477472701</Id>
+              <Issr>KBO-BCE</Issr>
+            </Othr>
+          </OrgId>
+        </Id>
+      </InitgPty>
+    </GrpHdr>
+  </CstmrCdtTrfInitn>
+</Document>
+"""
 
 class test_guess_mimetype(BaseCase):
 
@@ -81,6 +104,9 @@ class test_guess_mimetype(BaseCase):
         mimetype = guess_mimetype(content, default='test')
         self.assertEqual(mimetype, 'application/zip')
 
+    def test_mimetype_xml(self):
+        mimetype = guess_mimetype(XML, default='test')
+        self.assertEqual(mimetype, 'application/xml')
 
     def test_mimetype_get_extension(self):
         self.assertEqual(get_extension('filename.Abc'), '.abc')

odoo/tools/mimetypes.py

@@ -124,7 +124,7 @@ _mime_mappings = (
     _Entry('image/png', [b'\x89PNG\r\n\x1A\n'], []),
     _Entry('image/gif', [b'GIF87a', b'GIF89a'], []),
     _Entry('image/bmp', [b'BM'], []),
-    _Entry('image/svg+xml', [b'<'], [
+    _Entry('application/xml', [b'<'], [
         _check_svg,
     ]),
     _Entry('image/x-icon', [b'\x00\x00\x01\x00'], []),