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// Copyright 2010 The Kyua Authors.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// * Neither the name of Google Inc. nor the names of its contributors
// may be used to endorse or promote products derived from this software
// without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include <cstdlib>
#include <cstring>
#include <iostream>
#include "utils/defs.hpp"
#include "utils/test_utils.ipp"
namespace {
/// Prints a fake but valid test case list and then aborts.
///
/// \param argv The original arguments of the program.
///
/// \return Nothing because this dies before returning.
static int
helper_abort_test_cases_list(int /* argc */, char** argv)
{
for (const char* const* arg = argv; *arg != NULL; arg++) {
if (std::strcmp(*arg, "-l") == 0) {
std::cout << "Content-Type: application/X-atf-tp; "
"version=\"1\"\n\n";
std::cout << "ident: foo\n";
}
}
utils::abort_without_coredump();
}
/// Just returns without printing anything as the test case list.
///
/// \return Always 0, as required for test programs.
static int
helper_empty_test_cases_list(int /* argc */, char** /* argv */)
{
return EXIT_SUCCESS;
}
/// Prints a correctly-formatted test case list but empty.
///
/// \param argv The original arguments of the program.
///
/// \return Always 0, as required for test programs.
static int
helper_zero_test_cases(int /* argc */, char** argv)
{
for (const char* const* arg = argv; *arg != NULL; arg++) {
if (std::strcmp(*arg, "-l") == 0)
std::cout << "Content-Type: application/X-atf-tp; "
"version=\"1\"\n\n";
}
return EXIT_SUCCESS;
}
/// Mapping of the name of a helper to its implementation.
struct helper {
/// The name of the helper, as will be provided by the user on the CLI.
const char* name;
/// A pointer to the function implementing the helper.
int (*hook)(int, char**);
};
/// NULL-terminated table mapping helper names to their implementations.
static const helper helpers[] = {
{ "abort_test_cases_list", helper_abort_test_cases_list, },
{ "empty_test_cases_list", helper_empty_test_cases_list, },
{ "zero_test_cases", helper_zero_test_cases, },
{ NULL, NULL, },
};
} // anonymous namespace
/// Entry point to the ATF-less helpers.
///
/// The caller must select a helper to execute by defining the HELPER
/// environment variable to the name of the desired helper. Think of this main
/// method as a subprogram dispatcher, to avoid having many individual helper
/// binaries.
///
/// \todo Maybe we should really have individual helper binaries. It would
/// avoid a significant amount of complexity here and in the tests, at the
/// expense of some extra files and extra build logic.
///
/// \param argc The user argument count; delegated to the helper.
/// \param argv The user arguments; delegated to the helper.
///
/// \return The exit code of the helper, which depends on the requested helper.
int
main(int argc, char** argv)
{
const char* command = std::getenv("HELPER");
if (command == NULL) {
std::cerr << "Usage error: HELPER must be set to a helper name\n";
std::exit(EXIT_FAILURE);
}
const struct helper* iter = helpers;
for (; iter->name != NULL && std::strcmp(iter->name, command) != 0; iter++)
;
if (iter->name == NULL) {
std::cerr << "Usage error: unknown command " << command << "\n";
std::exit(EXIT_FAILURE);
}
return iter->hook(argc, argv);
}
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