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tests: Cover m_eventPtr value with entities and reentering

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m_eventPtr is a key provider to these functions:
- XML_GetCurrentByteCount
- XML_GetCurrentByteIndex
- XML_GetCurrentColumnNumber
- XML_GetCurrentLineNumber
- XML_GetInputContext
This commit is contained in:
Sebastian Pipping 2025-03-19 02:44:41 +01:00 • committed by Berkay Eren Ürün
parent f3feb0d09c
commit c096f96980
1 changed files with 61 additions and 0 deletions
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61
expat/tests/misc_tests.c
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@ -618,6 +618,66 @@ START_TEST(test_renter_loop_finite_content) {
}
END_TEST
// Inspired by function XML_OriginalString of Perl's XML::Parser
static char *
dup_original_string(XML_Parser parser) {
const int byte_count = XML_GetCurrentByteCount(parser);
assert_true(byte_count >= 0);
int offset = -1;
int size = -1;
const char *const context = XML_GetInputContext(parser, &offset, &size);
#if XML_CONTEXT_BYTES > 0
assert_true(context != NULL);
assert_true(offset >= 0);
assert_true(size >= 0);
return portable_strndup(context + offset, byte_count);
#else
assert_true(context == NULL);
return NULL;
#endif
}
static void
on_characters_issue_980(void *userData, const XML_Char *s, int len) {
(void)s;
(void)len;
XML_Parser parser = (XML_Parser)userData;
char *const original_string = dup_original_string(parser);
#if XML_CONTEXT_BYTES > 0
assert_true(original_string != NULL);
assert_true(strcmp(original_string, "&draft.day;") == 0);
free(original_string);
#else
assert_true(original_string == NULL);
#endif
}
START_TEST(test_misc_expected_event_ptr_issue_980) {
// NOTE: This is a tiny subset of sample "REC-xml-19980210.xml"
// from Perl's XML::Parser
const char *const doc = "<!DOCTYPE day [\n"
" <!ENTITY draft.day '10'>\n"
"]>\n"
"<day>&draft.day;</day>\n";
XML_Parser parser = XML_ParserCreate(NULL);
XML_SetUserData(parser, parser);
XML_SetCharacterDataHandler(parser, on_characters_issue_980);
assert_true(_XML_Parse_SINGLE_BYTES(parser, doc, (int)strlen(doc),
/*isFinal=*/XML_TRUE)
== XML_STATUS_OK);
XML_ParserFree(parser);
}
END_TEST
void
make_miscellaneous_test_case(Suite *s) {
TCase *tc_misc = tcase_create("miscellaneous tests");
@ -645,4 +705,5 @@ make_miscellaneous_test_case(Suite *s) {
tcase_add_test(tc_misc, test_misc_resumeparser_not_crashing);
tcase_add_test(tc_misc, test_misc_stopparser_rejects_unstarted_parser);
tcase_add_test__if_xml_ge(tc_misc, test_renter_loop_finite_content);
tcase_add_test(tc_misc, test_misc_expected_event_ptr_issue_980);
}