Fix #244 - Fix failing test with libxmlsec-1.2.36, also make libxmlsec version available from Python.

Author: tdivis

src/main.c

@@ -119,6 +119,13 @@ static PyObject* PyXmlSec_PyShutdown(PyObject* self) {
     Py_RETURN_NONE;
 }
 
+static char PyXmlSec_GetLibXmlSecVersion__doc__[] = \
+    "get_libxmlsec_version() -> tuple\n"
+    "Returns Version tuple of wrapped libxml library.";
+static PyObject* PyXmlSec_GetLibXmlSecVersion() {
+    return Py_BuildValue("(iii)", XMLSEC_VERSION_MAJOR, XMLSEC_VERSION_MINOR, XMLSEC_VERSION_SUBMINOR);
+}
+
 static char PyXmlSec_PyEnableDebugOutput__doc__[] = \
     "enable_debug_trace(enabled) -> None\n"
     "Enables or disables calling LibXML2 callback from the default errors callback.\n\n"
@@ -386,6 +393,12 @@ static PyMethodDef PyXmlSec_MainMethods[] = {
         METH_NOARGS,
         PyXmlSec_PyShutdown__doc__
     },
+    {
+        "get_libxmlsec_version",
+        (PyCFunction)PyXmlSec_GetLibXmlSecVersion,
+        METH_NOARGS,
+        PyXmlSec_GetLibXmlSecVersion__doc__
+    },
     {
         "enable_debug_trace",
         (PyCFunction)PyXmlSec_PyEnableDebugOutput,

tests/data/sign5-out-xmlsec_1_2_36_to_37.xml

@@ -0,0 +1,67 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+XML Security Library example: Signed XML doc file (sign5 example).
+-->
+<Envelope xmlns="urn:envelope">
+  <Data>
+	Hello, World!
+  </Data>
+<Signature xmlns="http://www.w3.org/2000/09/xmldsig#">
+<SignedInfo>
+<CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/>
+<SignatureMethod Algorithm="http://www.w3.org/2000/09/xmldsig#rsa-sha1"/>
+<Reference>
+<Transforms>
+<Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/>
+</Transforms>
+<DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1"/>
+<DigestValue>HjY8ilZAIEM2tBbPn5mYO1ieIX4=</DigestValue>
+</Reference>
+</SignedInfo>
+<SignatureValue>SIaj/6KY3C1SmDXU2++Gm31U1xTadFp04WhBgfsJFbxrL+q7GKSKN9kfQ+UpN9+i
+D5fWmuavXEHe4Gw6RMaMEkq2URQo7F68+d5J/ajq8/l4n+xE6/reGScVwT6L4dEP
+XXVJcAi2ZnQ3O7GTNvNGCPibL9mUcyCWBFZ92Uemtc/vJFCQ7ZyKMdMfACgxOwyN
+T/9971oog241/2doudhonc0I/3mgPYWkZdX6yvr62mEjnG+oUZkhWYJ4ewZJ4hM4
+JjbFqZO+OEzDRSbw3DkmuBA/mtlx+3t13SESfEub5hqoMdVmtth/eTb64dsPdl9r
+3k1ACVX9f8aHfQQdJOmLFQ==</SignatureValue>
+<KeyInfo>
+<X509Data>
+
+
+
+<X509IssuerSerial>
+<X509IssuerName>Test Issuer</X509IssuerName>
+<X509SerialNumber>1</X509SerialNumber>
+</X509IssuerSerial>
+<X509Certificate>MIIE3zCCBEigAwIBAgIBBTANBgkqhkiG9w0BAQQFADCByzELMAkGA1UEBhMCVVMx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</X509Certificate>
+<X509SubjectName/>
+<X509SKI/>
+</X509Data>
+</KeyInfo>
+</Signature></Envelope>

tests/test_ds.py

@@ -182,7 +182,11 @@ def test_sign_case5(self):
         self.assertEqual("rsakey.pem", ctx.key.name)
 
         ctx.sign(sign)
-        self.assertEqual(self.load_xml("sign5-out.xml"), root)
+        if (1, 2, 36) <= xmlsec.get_libxmlsec_version() <= (1, 2, 37):
+            expected_xml_file = 'sign5-out-xmlsec_1_2_36_to_37.xml'
+        else:
+            expected_xml_file = 'sign5-out.xml'
+        self.assertEqual(self.load_xml(expected_xml_file), root)
 
     def test_sign_binary_bad_args(self):
         ctx = xmlsec.SignatureContext()