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qpdf/libtests/qutil.cc
Jay Berkenbilt 17c0e38c8e Force assert to be defined in test code
2022-03-07 10:07:27 -05:00

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#include <iostream>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <qpdf/QUtil.hh>
#include <qpdf/PointerHolder.hh>
#include <qpdf/QPDFSystemError.hh>
#include <qpdf/Pl_Buffer.hh>
#include <string.h>
#include <limits.h>
#include <fstream>
#include <locale>
#ifdef _WIN32
# include <io.h>
#else
# include <unistd.h>
#endif
#ifdef NDEBUG
// We need assert even in a release build for test code.
# undef NDEBUG
#endif
#include <cassert>
template <class int_T>
void test_to_number(char const* str, int_T wanted, bool error,
int_T (*fn)(char const*))
{
bool threw = false;
bool worked = false;
int_T result = 0;
std::string msg;
try
{
result = fn(str);
worked = (wanted == result);
}
catch (std::runtime_error const& e)
{
threw = true;
msg = e.what();
}
if (threw)
{
if (error)
{
std::cout << str << " to int threw (" << msg << "): PASSED" << std::endl;
}
else
{
std::cout << str << " to int threw but wanted "
<< wanted << std::endl;
}
}
else
{
if (worked)
{
std::cout << str << " to int: PASSED" << std::endl;
}
else
{
std::cout << str << " to int failed; got " << result << std::endl;
}
}
}
void test_to_int(char const* str, int wanted, bool error)
{
test_to_number(str, wanted, error, QUtil::string_to_int);
}
void test_to_ll(char const* str, long long wanted, bool error)
{
test_to_number(str, wanted, error, QUtil::string_to_ll);
}
void test_to_uint(char const* str, unsigned int wanted, bool error)
{
test_to_number(str, wanted, error, QUtil::string_to_uint);
}
void test_to_ull(char const* str, unsigned long long wanted, bool error)
{
test_to_number(str, wanted, error, QUtil::string_to_ull);
}
static void set_locale()
{
try
{
// First try a locale known to put commas in numbers.
std::locale::global(std::locale("en_US.UTF-8"));
}
catch (std::runtime_error&)
{
try
{
// If that fails, fall back to the user's default locale.
std::locale::global(std::locale(""));
}
catch (std::runtime_error& e)
{
// Ignore this error on Windows without MSVC. We get
// enough test coverage on other platforms, and mingw
// seems to have limited locale support (as of
// 2020-10).
#if ! defined(_WIN32) || defined(_MSC_VER)
throw e;
#endif
}
}
}
void string_conversion_test()
{
// Make sure the code produces consistent results even if we load
// a non-C locale.
set_locale();
std::cout << QUtil::int_to_string(16059) << std::endl
<< QUtil::int_to_string(16059, 7) << std::endl
<< QUtil::int_to_string(16059, -7) << std::endl
<< QUtil::double_to_string(3.14159, 0, false) << std::endl
<< QUtil::double_to_string(3.14159, 3) << std::endl
<< QUtil::double_to_string(1000.123, -1024, false) << std::endl
<< QUtil::double_to_string(.1234, 5, false) << std::endl
<< QUtil::double_to_string(.0001234, 5) << std::endl
<< QUtil::double_to_string(.123456, 5) << std::endl
<< QUtil::double_to_string(.000123456, 5) << std::endl
<< QUtil::double_to_string(1.01020, 5, true) << std::endl
<< QUtil::double_to_string(1.00000, 5, true) << std::endl
<< QUtil::double_to_string(1, 5, true) << std::endl
<< QUtil::double_to_string(1, 5, false) << std::endl
<< QUtil::double_to_string(10, 2, false) << std::endl
<< QUtil::double_to_string(10, 2, true) << std::endl
<< QUtil::int_to_string_base(16059, 10) << std::endl
<< QUtil::int_to_string_base(16059, 8) << std::endl
<< QUtil::int_to_string_base(16059, 16) << std::endl
<< QUtil::int_to_string_base(5000093552LL, 10) << std::endl;
std::string embedded_null = "one";
embedded_null += '\0';
embedded_null += "two";
std::cout << embedded_null.c_str() << std::endl;
std::cout << embedded_null.length() << std::endl;
char* tmp = QUtil::copy_string(embedded_null);
if (memcmp(tmp, embedded_null.c_str(), 7) == 0)
{
std::cout << "compare okay" << std::endl;
}
else
{
std::cout << "compare failed" << std::endl;
}
delete [] tmp;
// Also test with make_shared_cstr and make_unique_cstr
auto tmp2 = QUtil::make_shared_cstr(embedded_null);
if (memcmp(tmp2.get(), embedded_null.c_str(), 7) == 0)
{
std::cout << "compare okay" << std::endl;
}
else
{
std::cout << "compare failed" << std::endl;
}
auto tmp3 = QUtil::make_unique_cstr(embedded_null);
if (memcmp(tmp3.get(), embedded_null.c_str(), 7) == 0)
{
std::cout << "compare okay" << std::endl;
}
else
{
std::cout << "compare failed" << std::endl;
}
std::string int_max_str = QUtil::int_to_string(INT_MAX);
std::string int_min_str = QUtil::int_to_string(INT_MIN);
long long int_max_plus_1 = static_cast<long long>(INT_MAX) + 1;
long long int_min_minus_1 = static_cast<long long>(INT_MIN) - 1;
std::string int_max_plus_1_str = QUtil::int_to_string(int_max_plus_1);
std::string int_min_minus_1_str = QUtil::int_to_string(int_min_minus_1);
std::string small_positive = QUtil::uint_to_string(16059U);
std::string small_negative = QUtil::int_to_string(-16059);
test_to_int(int_min_str.c_str(), INT_MIN, false);
test_to_int(int_max_str.c_str(), INT_MAX, false);
test_to_int(int_max_plus_1_str.c_str(), 0, true);
test_to_int(int_min_minus_1_str.c_str(), 0, true);
test_to_int("9999999999999999999999999", 0, true);
test_to_ll(int_max_plus_1_str.c_str(), int_max_plus_1, false);
test_to_ll(int_min_minus_1_str.c_str(), int_min_minus_1, false);
test_to_ll("99999999999999999999999999999999999999999999999999", 0, true);
test_to_uint(small_positive.c_str(), 16059U, false);
test_to_uint(small_negative.c_str(), 0, true);
test_to_uint("9999999999", 0, true);
test_to_ull(small_positive.c_str(), 16059U, false);
test_to_ull(small_negative.c_str(), 0, true);
}
void os_wrapper_test()
{
try
{
std::cout << "before remove" << std::endl;
QUtil::os_wrapper("remove file",
remove("/this/file/does/not/exist"));
std::cout << "after remove" << std::endl;
}
catch (std::runtime_error& s)
{
std::cout << "exception: " << s.what() << std::endl;
}
}
void fopen_wrapper_test()
{
try
{
std::cout << "before fopen" << std::endl;
FILE* f = QUtil::safe_fopen("/this/file/does/not/exist", "r");
std::cout << "after fopen" << std::endl;
(void) fclose(f);
}
catch (QPDFSystemError& s)
{
std::cout << "exception: " << s.what() << std::endl;
assert(s.getErrno() != 0);
}
assert(QUtil::file_can_be_opened("qutil.out"));
assert(! QUtil::file_can_be_opened("/does/not/exist"));
}
void getenv_test()
{
std::string val;
std::cout << "IN_TESTSUITE: " << QUtil::get_env("IN_TESTSUITE", &val)
<< ": " << val << std::endl;
// Hopefully this environment variable is not defined.
std::cout << "HAGOOGAMAGOOGLE: " << QUtil::get_env("HAGOOGAMAGOOGLE")
<< std::endl;
}
static void print_utf8(unsigned long val)
{
std::string result = QUtil::toUTF8(val);
std::cout << "0x" << QUtil::uint_to_string_base(val, 16) << " ->";
if (val < 0xfffe)
{
std::cout << " " << result;
}
else
{
// Emacs has trouble with utf-8 encoding files with characters
// outside the 16-bit portion, so just show the character
// values.
for (std::string::iterator iter = result.begin();
iter != result.end(); ++iter)
{
std::cout << " " << QUtil::int_to_string_base(
static_cast<int>(static_cast<unsigned char>(*iter)), 16, 2);
}
}
std::cout << std::endl;
}
void to_utf8_test()
{
print_utf8(0x41UL);
print_utf8(0xF7UL);
print_utf8(0x3c0UL);
print_utf8(0x16059UL);
print_utf8(0x7fffffffUL);
try
{
print_utf8(0x80000000UL);
}
catch (std::runtime_error& e)
{
std::cout << "0x80000000: " << e.what() << std::endl;
}
}
static void print_utf16(unsigned long val)
{
std::string result = QUtil::toUTF16(val);
std::cout << "0x" << QUtil::uint_to_string_base(val, 16) << " ->";
for (std::string::iterator iter = result.begin();
iter != result.end(); ++iter)
{
std::cout << " " << QUtil::int_to_string_base(
static_cast<int>(static_cast<unsigned char>(*iter)), 16, 2);
}
std::cout << std::endl;
}
void to_utf16_test()
{
print_utf16(0x41UL);
print_utf16(0xF7UL);
print_utf16(0x3c0UL);
print_utf16(0x16059UL);
print_utf16(0xdeadUL);
print_utf16(0x7fffffffUL);
print_utf16(0x80000000UL);
std::string s(QUtil::utf8_to_utf16("\xcf\x80"));
std::cout << QUtil::utf16_to_utf8(s) << std::endl;
std::cout << QUtil::utf16_to_utf8(s + ".") << std::endl;
std::cout << "LE: " << QUtil::utf16_to_utf8("\xff\xfe\xc0\x03") << std::endl;
}
void utf8_to_ascii_test()
{
char const* input = "\302\277Does \317\200 have fingers?";
std::cout << input
<< std::endl
<< QUtil::utf8_to_ascii(input)
<< std::endl
<< QUtil::utf8_to_ascii(input, '*')
<< std::endl;
std::string a = QUtil::utf8_to_win_ansi(input, '*');
std::string b = QUtil::utf8_to_mac_roman(input, '*');
std::cout
<< "<" << QUtil::int_to_string_base(
static_cast<unsigned char>(a.at(0)), 16, 2)
<< ">" << a.substr(1) << std::endl
<< "<" << QUtil::int_to_string_base(
static_cast<unsigned char>(b.at(0)), 16, 2)
<< ">" << b.substr(1) << std::endl;
}
void transcoding_test(std::string (*to_utf8)(std::string const&),
std::string (*from_utf8)(std::string const&, char),
int first, int last, std::string unknown)
{
std::string in(" ");
std::string out;
std::string back;
for (int i = first; i <= last; ++i)
{
in.at(0) = static_cast<char>(static_cast<unsigned char>(i));
out = (*to_utf8)(in);
std::string wanted = (out == "\xef\xbf\xbd") ? unknown : in;
back = (*from_utf8)(out, '?');
if (back != wanted)
{
std::cout << i << ": " << in << " -> " << out
<< " -> " << back << " (wanted " << wanted << ")"
<< std::endl;
}
}
}
void check_analyze(std::string const& str, bool has8bit, bool utf8, bool utf16)
{
bool has_8bit_chars = false;
bool is_valid_utf8 = false;
bool is_utf16 = false;
QUtil::analyze_encoding(str, has_8bit_chars, is_valid_utf8, is_utf16);
if (! ((has_8bit_chars == has8bit) &&
(is_valid_utf8 == utf8) &&
(is_utf16 == utf16)))
{
std::cout << "analysis failed: " << str << std::endl;
}
}
void print_alternatives(std::string const& str)
{
std::vector<std::string> result = QUtil::possible_repaired_encodings(str);
size_t n = result.size();
for (size_t i = 0; i < n; ++i)
{
std::cout << i << ": " << QUtil::hex_encode(result.at(i)) << std::endl;
}
}
void transcoding_test()
{
transcoding_test(&QUtil::pdf_doc_to_utf8,
&QUtil::utf8_to_pdf_doc, 127, 160, "\x9f");
std::cout << "bidirectional pdf doc done" << std::endl;
transcoding_test(&QUtil::pdf_doc_to_utf8,
&QUtil::utf8_to_pdf_doc, 24, 31, "?");
std::cout << "bidirectional pdf doc low done" << std::endl;
transcoding_test(&QUtil::win_ansi_to_utf8,
&QUtil::utf8_to_win_ansi, 128, 160, "?");
std::cout << "bidirectional win ansi done" << std::endl;
transcoding_test(&QUtil::mac_roman_to_utf8,
&QUtil::utf8_to_mac_roman, 128, 255, "?");
std::cout << "bidirectional mac roman done" << std::endl;
check_analyze("pi = \317\200", true, true, false);
check_analyze("pi != \317", true, false, false);
check_analyze("pi != 22/7", false, false, false);
check_analyze(std::string("\xfe\xff\x00\x51", 4), true, false, true);
check_analyze(std::string("\xff\xfe\x51\x00", 4), true, false, true);
std::cout << "analysis done" << std::endl;
std::string input1("a\302\277b");
std::string input2("a\317\200b");
std::string input3("ab");
std::string output;
assert(! QUtil::utf8_to_ascii(input1, output));
assert(! QUtil::utf8_to_ascii(input2, output));
assert(QUtil::utf8_to_ascii(input3, output));
assert(QUtil::utf8_to_win_ansi(input1, output));
assert(! QUtil::utf8_to_win_ansi(input2, output));
assert(QUtil::utf8_to_win_ansi(input3, output));
assert(QUtil::utf8_to_mac_roman(input1, output));
assert(! QUtil::utf8_to_mac_roman(input2, output));
assert(QUtil::utf8_to_mac_roman(input3, output));
assert(QUtil::utf8_to_pdf_doc(input1, output));
assert(! QUtil::utf8_to_pdf_doc(input2, output));
assert(QUtil::utf8_to_pdf_doc(input3, output));
std::cout << "alternatives" << std::endl;
// char name mac win pdf-doc
// U+0192 florin 304 203 206
// U+00A9 copyright 251 251 251
// U+00E9 eacute 216 351 351
// U+017E zcaron - 236 236
std::string pdfdoc = "\206\251\351\236";
std::string utf8 = QUtil::pdf_doc_to_utf8(pdfdoc);
print_alternatives(pdfdoc);
print_alternatives(utf8);
print_alternatives("quack");
std::cout << "done alternatives" << std::endl;
// These are characters are either valid in PDFDoc and invalid in
// UTF-8 or the other way around.
std::string other("w\x18w\x19w\x1aw\x1bw\x1cw\x1dw\x1ew\x1fw\x7fw");
// cSpell: ignore xadw
std::string other_doc = other + "\x9fw\xadw";
std::cout << QUtil::pdf_doc_to_utf8(other_doc) << std::endl;
std::string other_utf8 =
other + QUtil::toUTF8(0x9f) + "w" + QUtil::toUTF8(0xad) + "w";
std::string other_to_utf8;
assert(! QUtil::utf8_to_pdf_doc(other_utf8, other_to_utf8));
std::cout << other_to_utf8 << std::endl;
std::cout << "done other characters" << std::endl;
}
void print_whoami(char const* str)
{
auto dup = QUtil::make_unique_cstr(str);
std::cout << QUtil::getWhoami(dup.get()) << std::endl;
}
void get_whoami_test()
{
print_whoami("a/b/c/quack1");
print_whoami("a/b/c/quack2.exe");
print_whoami("a\\b\\c\\quack3");
print_whoami("a\\b\\c\\quack4.exe");
}
void assert_same_file(char const* file1, char const* file2, bool expected)
{
bool actual = QUtil::same_file(file1, file2);
std::cout << "file1: -" << (file1 ? file1 : "(null)") << "-, file2: -"
<< (file2 ? file2 : "(null)") << "-; same: "
<< actual << ": " << ((actual == expected) ? "PASS" : "FAIL")
<< std::endl;
}
void same_file_test()
{
try
{
fclose(QUtil::safe_fopen("qutil.out", "r"));
fclose(QUtil::safe_fopen("other-file", "r"));
}
catch (std::exception const&)
{
std::cout << "same_file_test expects to have qutil.out and other-file"
" exist in the current directory\n";
return;
}
assert_same_file("qutil.out", "./qutil.out", true);
assert_same_file("qutil.out", "qutil.out", true);
assert_same_file("qutil.out", "other-file", false);
assert_same_file("qutil.out", "", false);
assert_same_file("qutil.out", 0, false);
assert_same_file("", "qutil.out", false);
}
void path_test()
{
auto check = [](bool print, std::string const& a, std::string const& b) {
auto result = QUtil::path_basename(a);
if (print)
{
std::cout << a << " -> " << result << std::endl;
}
assert(result == b);
};
#ifdef _WIN32
check(false, "asdf\\qwer", "qwer");
check(false, "asdf\\qwer/\\", "qwer");
#endif
check(true, "////", "/");
check(true, "a/b/cdef", "cdef");
check(true, "a/b/cdef/", "cdef");
check(true, "/", "/");
check(true, "", "");
check(true, "quack", "quack");
}
void read_from_file_test()
{
std::list<std::string> lines = QUtil::read_lines_from_file("other-file");
for (std::list<std::string>::iterator iter = lines.begin();
iter != lines.end(); ++iter)
{
std::cout << *iter << std::endl;
}
// Test the other versions and make sure we get the same results
{
std::ifstream infs("other-file", std::ios_base::binary);
assert(QUtil::read_lines_from_file(infs) == lines);
FILE* fp = QUtil::safe_fopen("other-file", "rb");
assert(QUtil::read_lines_from_file(fp) == lines);
fclose(fp);
}
// Test with EOL preservation
std::list<std::string> lines2 =
QUtil::read_lines_from_file("other-file", true);
auto line = lines2.begin();
assert(37 == (*line).length());
assert('.' == (*line).at(35));
assert('\n' == (*line).at(36));
++line;
assert(24 == (*line).length());
assert('.' == (*line).at(21));
assert('\r' == (*line).at(22));
assert('\n' == (*line).at(23));
++line;
assert(24591 == (*line).length());
assert('.' == (*line).at(24589));
assert('\n' == (*line).at(24590));
// Test the other versions and make sure we get the same results
{
std::ifstream infs("other-file", std::ios_base::binary);
assert(QUtil::read_lines_from_file(infs, true) == lines2);
FILE* fp = QUtil::safe_fopen("other-file", "rb");
assert(QUtil::read_lines_from_file(fp, true) == lines2);
fclose(fp);
}
PointerHolder<char> buf;
size_t size = 0;
QUtil::read_file_into_memory("other-file", buf, size);
std::cout << "read " << size << " bytes" << std::endl;
char const* p = buf.get();
assert(size == 24652);
assert(memcmp(p, "This file is used for qutil testing.", 36) == 0);
assert(p[59] == static_cast<char>(13));
assert(memcmp(p + 24641, "very long.", 10) == 0);
Pl_Buffer b2("buffer");
// QUtil::file_provider also exercises QUtil::pipe_file
QUtil::file_provider("other-file")(&b2);
auto buf2 = b2.getBufferSharedPointer();
assert(buf2->getSize() == size);
assert(memcmp(buf2->getBuffer(), p, size) == 0);
}
void assert_hex_encode(std::string const& input, std::string const& expected)
{
std::string actual = QUtil::hex_encode(input);
if (expected != actual)
{
std::cout << "hex encode " << input
<< ": expected = " << expected
<< "; actual = " << actual
<< std::endl;
}
}
void assert_hex_decode(std::string const& input, std::string const& expected)
{
std::string actual = QUtil::hex_decode(input);
if (expected != actual)
{
std::cout << "hex encode " << input
<< ": expected = " << expected
<< "; actual = " << actual
<< std::endl;
}
}
void hex_encode_decode_test()
{
std::cout << "begin hex encode/decode\n";
assert_hex_encode("", "");
assert_hex_encode("Potato", "506f7461746f");
std::string with_null("a\367" "00w");
with_null[3] = '\0';
assert_hex_encode(with_null, "61f7300077");
assert_hex_decode("", "");
assert_hex_decode("61F7-3000-77", with_null);
assert_hex_decode("41455", "AEP");
std::cout << "end hex encode/decode\n";
}
static void assert_no_file(char const* filename)
{
try
{
fclose(QUtil::safe_fopen(filename, "r"));
assert(false);
}
catch (QPDFSystemError&)
{
}
}
void rename_delete_test()
{
PointerHolder<char> buf;
size_t size = 0;
try
{
QUtil::remove_file("old\xcf\x80");
}
catch (QPDFSystemError&)
{
}
assert_no_file("old\xcf\x80");
std::cout << "create file" << std::endl;;
FILE* f1 = QUtil::safe_fopen("old\xcf\x80", "w");
fprintf(f1, "one");
fclose(f1);
QUtil::read_file_into_memory("old\xcf\x80", buf, size);
assert(memcmp(buf.get(), "one", 3) == 0);
std::cout << "rename file" << std::endl;;
QUtil::rename_file("old\xcf\x80", "old\xcf\x80.~tmp");
QUtil::read_file_into_memory("old\xcf\x80.~tmp", buf, size);
assert(memcmp(buf.get(), "one", 3) == 0);
assert_no_file("old\xcf\x80");
std::cout << "create file" << std::endl;;
f1 = QUtil::safe_fopen("old\xcf\x80", "w");
fprintf(f1, "two");
fclose(f1);
std::cout << "rename over existing" << std::endl;;
QUtil::rename_file("old\xcf\x80", "old\xcf\x80.~tmp");
QUtil::read_file_into_memory("old\xcf\x80.~tmp", buf, size);
assert(memcmp(buf.get(), "two", 3) == 0);
assert_no_file("old\xcf\x80");
std::cout << "delete file" << std::endl;;
QUtil::remove_file("old\xcf\x80.~tmp");
assert_no_file("old\xcf\x80");
assert_no_file("old\xcf\x80.~tmp");
}
void timestamp_test()
{
auto check = [](QUtil::QPDFTime const& t) {
std::string pdf = QUtil::qpdf_time_to_pdf_time(t);
std::cout << pdf << std::endl;
QUtil::QPDFTime t2;
assert(QUtil::pdf_time_to_qpdf_time(pdf, &t2));
assert(QUtil::qpdf_time_to_pdf_time(t2) == pdf);
};
check(QUtil::QPDFTime(2021, 2, 9, 14, 49, 25, 300));
check(QUtil::QPDFTime(2021, 2, 10, 1, 19, 25, -330));
check(QUtil::QPDFTime(2021, 2, 9, 19, 19, 25, 0));
assert(! QUtil::pdf_time_to_qpdf_time("potato"));
assert(QUtil::pdf_time_to_qpdf_time("D:20210211064743Z"));
assert(QUtil::pdf_time_to_qpdf_time("D:20210211064743-05'00'"));
assert(QUtil::pdf_time_to_qpdf_time("D:20210211064743+05'30'"));
assert(QUtil::pdf_time_to_qpdf_time("D:20210211064743"));
// Round trip on the current time without actually printing it.
// Manual testing was done to ensure that we are actually getting
// back the current time in various time zones.
assert(QUtil::pdf_time_to_qpdf_time(
QUtil::qpdf_time_to_pdf_time(
QUtil::get_current_qpdf_time())));
}
int main(int argc, char* argv[])
{
try
{
std::cout << "---- string conversion" << std::endl;
string_conversion_test();
std::cout << "---- os wrapper" << std::endl;
os_wrapper_test();
std::cout << "---- fopen" << std::endl;
fopen_wrapper_test();
std::cout << "---- getenv" << std::endl;
getenv_test();
std::cout << "---- utf8" << std::endl;
to_utf8_test();
std::cout << "---- utf16" << std::endl;
to_utf16_test();
std::cout << "---- utf8_to_ascii" << std::endl;
utf8_to_ascii_test();
std::cout << "---- transcoding" << std::endl;
transcoding_test();
std::cout << "---- whoami" << std::endl;
get_whoami_test();
std::cout << "---- file" << std::endl;
same_file_test();
std::cout << "---- path" << std::endl;
path_test();
std::cout << "---- read from file" << std::endl;
read_from_file_test();
std::cout << "---- hex encode/decode" << std::endl;
hex_encode_decode_test();
std::cout << "---- rename/delete" << std::endl;
rename_delete_test();
std::cout << "---- timestamp" << std::endl;
timestamp_test();
}
catch (std::exception& e)
{
std::cout << "unexpected exception: " << e.what() << std::endl;
}
return 0;
}
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