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transmission/tests/libtransmission/torrent-metainfo-test.cc
Charles Kerr 977b2a1bab
refactor: tr_loadFile() tr_saveFile() take a std::string_view filename arg (#2822)
* refactor: tr_saveFile takes a string_view

* refactor: tr_saveFile, tr_loadFile take string_view filename
2022-03-25 19:31:27 -05:00

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// This file Copyright (C) 2013-2022 Mnemosyne LLC.
// It may be used under GPLv2 (SPDX: GPL-2.0), GPLv3 (SPDX: GPL-3.0),
// or any future license endorsed by Mnemosyne LLC.
// License text can be found in the licenses/ folder.
#include <array>
#include <cerrno>
#include <cstring>
#include <string_view>
#include "transmission.h"
#include "error.h"
#include "torrent-metainfo.h"
#include "torrent.h"
#include "tr-strbuf.h"
#include "utils.h"
#include "test-fixtures.h"
using namespace std::literals;
namespace libtransmission
{
namespace test
{
using TorrentMetainfoTest = SessionTest;
TEST_F(TorrentMetainfoTest, magnetLink)
{
// background info @ http://wiki.theory.org/BitTorrent_Magnet-URI_Webseeding
char const constexpr* const MagnetLink =
"magnet:?"
"xt=urn:btih:14ffe5dd23188fd5cb53a1d47f1289db70abf31e"
"&dn=ubuntu_12_04_1_desktop_32_bit"
"&tr=http%3A%2F%2Ftracker.publicbt.com%2Fannounce"
"&tr=udp%3A%2F%2Ftracker.publicbt.com%3A80"
"&ws=http%3A%2F%2Ftransmissionbt.com";
auto metainfo = tr_torrent_metainfo{};
EXPECT_TRUE(metainfo.parseMagnet(MagnetLink));
EXPECT_EQ(0, metainfo.fileCount()); // because it's a magnet link
EXPECT_EQ(2, std::size(metainfo.announceList()));
EXPECT_EQ(MagnetLink, metainfo.magnet());
}
#define BEFORE_PATH \
"d10:created by25:Transmission/2.82 (14160)13:creation datei1402280218e8:encoding5:UTF-84:infod5:filesld6:lengthi2e4:pathl"
#define AFTER_PATH \
"eed6:lengthi2e4:pathl5:b.txteee4:name3:foo12:piece lengthi32768e6:pieces20:ÞÉ`âM‘‹Šs¡Å;˺¬.åÂà7:privatei0eee"
// FIXME: split these into parameterized tests?
TEST_F(TorrentMetainfoTest, bucket)
{
struct LocalTest
{
std::string_view benc;
bool expected_parse_result;
};
auto const tests = std::array<LocalTest, 9>{ {
{ BEFORE_PATH "5:a.txt" AFTER_PATH, true },
// allow empty components, but not =all= empty components, see bug #5517
{ BEFORE_PATH "0:5:a.txt" AFTER_PATH, true },
{ BEFORE_PATH "0:0:" AFTER_PATH, false },
// allow path separators in a filename (replaced with '_')
{ BEFORE_PATH "7:a/a.txt" AFTER_PATH, true },
// allow "." components (skipped)
{ BEFORE_PATH "1:.5:a.txt" AFTER_PATH, true },
{ BEFORE_PATH "5:a.txt1:." AFTER_PATH, true },
// allow ".." components (replaced with "__")
{ BEFORE_PATH "2:..5:a.txt" AFTER_PATH, true },
{ BEFORE_PATH "5:a.txt2:.." AFTER_PATH, true },
// fail on empty string
{ "", false },
} };
tr_logSetLevel(TR_LOG_OFF);
for (auto const& test : tests)
{
auto metainfo = tr_torrent_metainfo{};
EXPECT_EQ(test.expected_parse_result, metainfo.parseBenc(test.benc));
}
}
#if 0
TEST_F(TorrentMetainfoTest, sanitize)
{
struct LocalTest
{
std::string_view input;
std::string_view expected_output;
};
auto const tests = std::array<LocalTest, 29>{
// skipped
LocalTest{ ""sv, ""sv },
{ "."sv, ""sv },
{ ".."sv, ""sv },
{ "....."sv, ""sv },
{ " "sv, ""sv },
{ " . "sv, ""sv },
{ ". . ."sv, ""sv },
// replaced with '_'
{ "/"sv, "_"sv },
{ "////"sv, "____"sv },
{ "\\\\"sv, "__"sv },
{ "/../"sv, "_.._"sv },
{ "foo<bar:baz/boo"sv, "foo_bar_baz_boo"sv },
{ "t\0e\x01s\tt\ri\nn\fg"sv, "t_e_s_t_i_n_g"sv },
// appended with '_'
{ "con"sv, "con_"sv },
{ "cOm4"sv, "cOm4_"sv },
{ "LPt9.txt"sv, "LPt9_.txt"sv },
{ "NUL.tar.gz"sv, "NUL_.tar.gz"sv },
// trimmed
{ " foo"sv, "foo"sv },
{ "foo "sv, "foo"sv },
{ " foo "sv, "foo"sv },
{ "foo."sv, "foo"sv },
{ "foo..."sv, "foo"sv },
{ " foo... "sv, "foo"sv },
// unmodified
{ "foo"sv, "foo"sv },
{ ".foo"sv, ".foo"sv },
{ "..foo"sv, "..foo"sv },
{ "foo.bar.baz"sv, "foo.bar.baz"sv },
{ "null"sv, "null"sv },
{ "compass"sv, "compass"sv },
};
auto out = std::string{};
for (auto const& test : tests)
{
out.clear();
auto const success = tr_metainfoAppendSanitizedPathComponent(out, test.input);
EXPECT_EQ(!std::empty(out), success);
EXPECT_EQ(test.expected_output, out);
}
}
#endif
TEST_F(TorrentMetainfoTest, AndroidTorrent)
{
auto const filename = tr_strvJoin(LIBTRANSMISSION_TEST_ASSETS_DIR, "/Android-x86 8.1 r6 iso.torrent"sv);
auto* ctor = tr_ctorNew(session_);
tr_error* error = nullptr;
EXPECT_TRUE(tr_ctorSetMetainfoFromFile(ctor, filename.c_str(), &error));
EXPECT_EQ(nullptr, error) << *error;
auto const* const metainfo = tr_ctorGetMetainfo(ctor);
EXPECT_NE(nullptr, metainfo);
EXPECT_EQ(336, metainfo->infoDictOffset());
EXPECT_EQ(26583, metainfo->infoDictSize());
EXPECT_EQ(592, metainfo->piecesOffset());
tr_ctorFree(ctor);
}
TEST_F(TorrentMetainfoTest, ctorSaveContents)
{
auto const src_filename = tr_pathbuf{ LIBTRANSMISSION_TEST_ASSETS_DIR, "/Android-x86 8.1 r6 iso.torrent"sv };
auto const tgt_filename = tr_pathbuf{ ::testing::TempDir(), "save-contents-test.torrent" };
// try saving without passing any metainfo.
auto* ctor = tr_ctorNew(session_);
tr_error* error = nullptr;
EXPECT_FALSE(tr_ctorSaveContents(ctor, tgt_filename.c_str(), &error));
EXPECT_NE(nullptr, error);
if (error != nullptr)
{
EXPECT_EQ(EINVAL, error->code);
tr_error_clear(&error);
}
// now try saving _with_ metainfo
EXPECT_TRUE(tr_ctorSetMetainfoFromFile(ctor, src_filename.c_str(), &error));
EXPECT_EQ(nullptr, error) << *error;
EXPECT_TRUE(tr_ctorSaveContents(ctor, tgt_filename.c_str(), &error));
EXPECT_EQ(nullptr, error) << *error;
// the saved contents should match the source file's contents
auto src_contents = std::vector<char>{};
EXPECT_TRUE(tr_loadFile(src_filename.sv(), src_contents, &error));
auto tgt_contents = std::vector<char>{};
EXPECT_TRUE(tr_loadFile(tgt_filename.sv(), tgt_contents, &error));
EXPECT_EQ(src_contents, tgt_contents);
// cleanup
EXPECT_TRUE(tr_sys_path_remove(tgt_filename.c_str(), &error));
EXPECT_EQ(nullptr, error) << *error;
tr_error_clear(&error);
tr_ctorFree(ctor);
}
} // namespace test
} // namespace libtransmission