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#include <string.h>
#include "tests.h"
#include "../xmlnode.h"
/*
* If we really wanted to test the billion laughs attack we would
* need to have more than just 4 ha's. But as long as this shorter
* document fails to parse, the longer one should also fail to parse.
*/
START_TEST(test_xmlnode_billion_laughs_attack)
{
const char *malicious_xml_doc = "<!DOCTYPE root [ <!ENTITY ha \"Ha !\"><!ENTITY ha2 \"&ha; &ha;\"><!ENTITY ha3 \"&ha2; &ha2;\"> ]><root>&ha3;</root>";
/* Uncomment this line if you want to see the error message given by
the parser for the above XML document */
/* purple_debug_set_enabled(TRUE); */
fail_if(xmlnode_from_str(malicious_xml_doc, -1),
"xmlnode_from_str() returned an XML tree, but we didn't want it to");
}
END_TEST
#define check_doc_structure(x) { \
xmlnode *ping, *child1, *child2; \
fail_if(x == NULL, "Failed to parse document"); \
ping = xmlnode_get_child(x, "ping"); \
fail_if(ping == NULL, "Failed to find 'ping' child"); \
child1 = xmlnode_get_child(ping, "child1"); \
fail_if(child1 == NULL, "Failed to find 'child1'"); \
child2 = xmlnode_get_child(child1, "child2"); \
fail_if(child2 == NULL, "Failed to find 'child2'"); \
xmlnode_new_child(child2, "a"); \
\
assert_string_equal("jabber:client", xmlnode_get_namespace(x)); \
/* NOTE: xmlnode_get_namespace() returns the namespace of the element, not the
* current default namespace. See http://www.w3.org/TR/xml-names/#defaulting and
* http://www.w3.org/TR/xml-names/#dt-defaultNS.
*/ \
assert_string_equal("urn:xmpp:ping", xmlnode_get_namespace(ping)); \
assert_string_equal("jabber:client", xmlnode_get_namespace(child1)); \
assert_string_equal("urn:xmpp:ping", xmlnode_get_namespace(child2)); \
/*
* This fails (well, actually crashes [the ns is NULL]) unless
* xmlnode_new_child() actually sets the element namespace.
assert_string_equal("jabber:client", xmlnode_get_namespace(xmlnode_get_child(child2, "a")));
*/ \
\
assert_string_equal("jabber:client", xmlnode_get_default_namespace(x)); \
assert_string_equal("jabber:client", xmlnode_get_default_namespace(ping)); \
assert_string_equal("jabber:client", xmlnode_get_default_namespace(child1)); \
assert_string_equal("jabber:client", xmlnode_get_default_namespace(child2)); \
}
START_TEST(test_xmlnode_prefixes)
{
const char *xml_doc =
"<iq type='get' xmlns='jabber:client' xmlns:ping='urn:xmpp:ping'>"
"<ping:ping>"
"<child1>"
"<ping:child2></ping:child2>" /* xmlns='jabber:child' */
"</child1>"
"</ping:ping>"
"</iq>";
char *str;
xmlnode *xml, *reparsed;
xml = xmlnode_from_str(xml_doc, -1);
check_doc_structure(xml);
/* Check that xmlnode_from_str(xmlnode_to_str(xml, NULL), -1) is idempotent. */
str = xmlnode_to_str(xml, NULL);
fail_if(str == NULL, "Failed to serialize XMLnode");
reparsed = xmlnode_from_str(str, -1);
fail_if(reparsed == NULL, "Failed to reparse xml document");
check_doc_structure(reparsed);
g_free(str);
xmlnode_free(xml);
xmlnode_free(reparsed);
}
END_TEST
START_TEST(test_strip_prefixes)
{
const char *xml_doc = "<message xmlns='jabber:client' from='user@gmail.com/resource' to='another_user@darkrain42.org' type='chat' id='purple'>"
"<cha:active xmlns:cha='http://jabber.org/protocol/chatstates'/>"
"<body>xvlc xvlc</body>"
"<im:html xmlns:im='http://jabber.org/protocol/xhtml-im'>"
"<xht:body xmlns:xht='http://www.w3.org/1999/xhtml'>"
"<xht:p>xvlc <xht:span style='font-weight: bold;'>xvlc</xht:span></xht:p>"
"</xht:body>"
"</im:html>"
"</message>";
const char *out = "<message xmlns='jabber:client' from='user@gmail.com/resource' to='another_user@darkrain42.org' type='chat' id='purple'>"
"<active xmlns:cha='http://jabber.org/protocol/chatstates' xmlns='http://jabber.org/protocol/chatstates'/>"
"<body>xvlc xvlc</body>"
"<html xmlns:im='http://jabber.org/protocol/xhtml-im' xmlns='http://jabber.org/protocol/xhtml-im'>"
"<body xmlns:xht='http://www.w3.org/1999/xhtml' xmlns='http://www.w3.org/1999/xhtml'>"
"<p>xvlc <span style='font-weight: bold;'>xvlc</span></p>"
"</body>"
"</html>"
"</message>";
char *str;
xmlnode *xml;
xml = xmlnode_from_str(xml_doc, -1);
fail_if(xml == NULL, "Failed to parse XML");
xmlnode_strip_prefixes(xml);
str = xmlnode_to_str(xml, NULL);
assert_string_equal_free(out, str);
xmlnode_free(xml);
}
END_TEST
Suite *
xmlnode_suite(void)
{
Suite *s = suite_create("Utility Functions");
TCase *tc = tcase_create("xmlnode");
tcase_add_test(tc, test_xmlnode_billion_laughs_attack);
tcase_add_test(tc, test_xmlnode_prefixes);
tcase_add_test(tc, test_strip_prefixes);
suite_add_tcase(s, tc);
return s;
}
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