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freebsd-dev/contrib/atf/atf-run/test-program.cpp
Marcel Moolenaar c243e4902b Merge ATF 0.16 from vendor/atf/dist. 
Provenance: http://code.google.com/p/kyua
Discussed with: gibbs, gnn, keramida, mdf, mlaier,
Discussed with: Garrett Cooper
2012-09-04 23:16:58 +00:00

791 lines
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//
// Automated Testing Framework (atf)
//
// Copyright (c) 2007 The NetBSD Foundation, Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// 2. 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.
//
// THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
//
extern "C" {
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <fcntl.h>
#include <signal.h>
#include <unistd.h>
}
#include <cerrno>
#include <cstdlib>
#include <cstring>
#include <fstream>
#include <iostream>
#include "atf-c/defs.h"
#include "atf-c++/detail/env.hpp"
#include "atf-c++/detail/parser.hpp"
#include "atf-c++/detail/process.hpp"
#include "atf-c++/detail/sanity.hpp"
#include "atf-c++/detail/text.hpp"
#include "config.hpp"
#include "fs.hpp"
#include "io.hpp"
#include "requirements.hpp"
#include "signals.hpp"
#include "test-program.hpp"
#include "timer.hpp"
#include "user.hpp"
namespace impl = atf::atf_run;
namespace detail = atf::atf_run::detail;
namespace {
static void
check_stream(std::ostream& os)
{
// If we receive a signal while writing to the stream, the bad bit gets set.
// Things seem to behave fine afterwards if we clear such error condition.
// However, I'm not sure if it's safe to query errno at this point.
if (os.bad()) {
if (errno == EINTR)
os.clear();
else
throw std::runtime_error("Failed");
}
}
namespace atf_tp {
static const atf::parser::token_type eof_type = 0;
static const atf::parser::token_type nl_type = 1;
static const atf::parser::token_type text_type = 2;
static const atf::parser::token_type colon_type = 3;
static const atf::parser::token_type dblquote_type = 4;
class tokenizer : public atf::parser::tokenizer< std::istream > {
public:
tokenizer(std::istream& is, size_t curline) :
atf::parser::tokenizer< std::istream >
(is, true, eof_type, nl_type, text_type, curline)
{
add_delim(':', colon_type);
add_quote('"', dblquote_type);
}
};
} // namespace atf_tp
class metadata_reader : public detail::atf_tp_reader {
impl::test_cases_map m_tcs;
void got_tc(const std::string& ident, const atf::tests::vars_map& props)
{
if (m_tcs.find(ident) != m_tcs.end())
throw(std::runtime_error("Duplicate test case " + ident +
" in test program"));
m_tcs[ident] = props;
if (m_tcs[ident].find("has.cleanup") == m_tcs[ident].end())
m_tcs[ident].insert(std::make_pair("has.cleanup", "false"));
if (m_tcs[ident].find("timeout") == m_tcs[ident].end())
m_tcs[ident].insert(std::make_pair("timeout", "300"));
}
public:
metadata_reader(std::istream& is) :
detail::atf_tp_reader(is)
{
}
const impl::test_cases_map&
get_tcs(void)
const
{
return m_tcs;
}
};
struct get_metadata_params {
const atf::fs::path& executable;
const atf::tests::vars_map& config;
get_metadata_params(const atf::fs::path& p_executable,
const atf::tests::vars_map& p_config) :
executable(p_executable),
config(p_config)
{
}
};
struct test_case_params {
const atf::fs::path& executable;
const std::string& test_case_name;
const std::string& test_case_part;
const atf::tests::vars_map& metadata;
const atf::tests::vars_map& config;
const atf::fs::path& resfile;
const atf::fs::path& workdir;
test_case_params(const atf::fs::path& p_executable,
const std::string& p_test_case_name,
const std::string& p_test_case_part,
const atf::tests::vars_map& p_metadata,
const atf::tests::vars_map& p_config,
const atf::fs::path& p_resfile,
const atf::fs::path& p_workdir) :
executable(p_executable),
test_case_name(p_test_case_name),
test_case_part(p_test_case_part),
metadata(p_metadata),
config(p_config),
resfile(p_resfile),
workdir(p_workdir)
{
}
};
static
std::string
generate_timestamp(void)
{
struct timeval tv;
if (gettimeofday(&tv, NULL) == -1)
return "0.0";
char buf[32];
const int len = snprintf(buf, sizeof(buf), "%ld.%ld",
static_cast< long >(tv.tv_sec),
static_cast< long >(tv.tv_usec));
if (len >= static_cast< int >(sizeof(buf)) || len < 0)
return "0.0";
else
return buf;
}
static
void
append_to_vector(std::vector< std::string >& v1,
const std::vector< std::string >& v2)
{
std::copy(v2.begin(), v2.end(),
std::back_insert_iterator< std::vector< std::string > >(v1));
}
static
char**
vector_to_argv(const std::vector< std::string >& v)
{
char** argv = new char*[v.size() + 1];
for (std::vector< std::string >::size_type i = 0; i < v.size(); i++) {
argv[i] = strdup(v[i].c_str());
}
argv[v.size()] = NULL;
return argv;
}
static
void
exec_or_exit(const atf::fs::path& executable,
const std::vector< std::string >& argv)
{
// This leaks memory in case of a failure, but it is OK. Exiting will
// do the necessary cleanup.
char* const* native_argv = vector_to_argv(argv);
::execv(executable.c_str(), native_argv);
const std::string message = "Failed to execute '" + executable.str() +
"': " + std::strerror(errno) + "\n";
if (::write(STDERR_FILENO, message.c_str(), message.length()) == -1)
std::abort();
std::exit(EXIT_FAILURE);
}
static
std::vector< std::string >
config_to_args(const atf::tests::vars_map& config)
{
std::vector< std::string > args;
for (atf::tests::vars_map::const_iterator iter = config.begin();
iter != config.end(); iter++)
args.push_back("-v" + (*iter).first + "=" + (*iter).second);
return args;
}
static
void
silence_stdin(void)
{
::close(STDIN_FILENO);
int fd = ::open("/dev/null", O_RDONLY);
if (fd == -1)
throw std::runtime_error("Could not open /dev/null");
INV(fd == STDIN_FILENO);
}
static
void
prepare_child(const atf::fs::path& workdir)
{
const int ret = ::setpgid(::getpid(), 0);
INV(ret != -1);
::umask(S_IWGRP | S_IWOTH);
for (int i = 1; i <= impl::last_signo; i++)
impl::reset(i);
atf::env::set("HOME", workdir.str());
atf::env::unset("LANG");
atf::env::unset("LC_ALL");
atf::env::unset("LC_COLLATE");
atf::env::unset("LC_CTYPE");
atf::env::unset("LC_MESSAGES");
atf::env::unset("LC_MONETARY");
atf::env::unset("LC_NUMERIC");
atf::env::unset("LC_TIME");
atf::env::set("TZ", "UTC");
atf::env::set("__RUNNING_INSIDE_ATF_RUN", "internal-yes-value");
impl::change_directory(workdir);
silence_stdin();
}
static
void
get_metadata_child(void* raw_params)
{
const get_metadata_params* params =
static_cast< const get_metadata_params* >(raw_params);
std::vector< std::string > argv;
argv.push_back(params->executable.leaf_name());
argv.push_back("-l");
argv.push_back("-s" + params->executable.branch_path().str());
append_to_vector(argv, config_to_args(params->config));
exec_or_exit(params->executable, argv);
}
void
run_test_case_child(void* raw_params)
{
const test_case_params* params =
static_cast< const test_case_params* >(raw_params);
const std::pair< int, int > user = impl::get_required_user(
params->metadata, params->config);
if (user.first != -1 && user.second != -1)
impl::drop_privileges(user);
// The input 'tp' parameter may be relative and become invalid once
// we change the current working directory.
const atf::fs::path absolute_executable = params->executable.to_absolute();
// Prepare the test program's arguments. We use dynamic memory and
// do not care to release it. We are going to die anyway very soon,
// either due to exec(2) or to exit(3).
std::vector< std::string > argv;
argv.push_back(absolute_executable.leaf_name());
argv.push_back("-r" + params->resfile.str());
argv.push_back("-s" + absolute_executable.branch_path().str());
append_to_vector(argv, config_to_args(params->config));
argv.push_back(params->test_case_name + ":" + params->test_case_part);
prepare_child(params->workdir);
exec_or_exit(absolute_executable, argv);
}
static void
tokenize_result(const std::string& line, std::string& out_state,
std::string& out_arg, std::string& out_reason)
{
const std::string::size_type pos = line.find_first_of(":(");
if (pos == std::string::npos) {
out_state = line;
out_arg = "";
out_reason = "";
} else if (line[pos] == ':') {
out_state = line.substr(0, pos);
out_arg = "";
out_reason = atf::text::trim(line.substr(pos + 1));
} else if (line[pos] == '(') {
const std::string::size_type pos2 = line.find("):", pos);
if (pos2 == std::string::npos)
throw std::runtime_error("Invalid test case result '" + line +
"': unclosed optional argument");
out_state = line.substr(0, pos);
out_arg = line.substr(pos + 1, pos2 - pos - 1);
out_reason = atf::text::trim(line.substr(pos2 + 2));
} else
UNREACHABLE;
}
static impl::test_case_result
handle_result(const std::string& state, const std::string& arg,
const std::string& reason)
{
PRE(state == "passed");
if (!arg.empty() || !reason.empty())
throw std::runtime_error("The test case result '" + state + "' cannot "
"be accompanied by a reason nor an expected value");
return impl::test_case_result(state, -1, reason);
}
static impl::test_case_result
handle_result_with_reason(const std::string& state, const std::string& arg,
const std::string& reason)
{
PRE(state == "expected_death" || state == "expected_failure" ||
state == "expected_timeout" || state == "failed" || state == "skipped");
if (!arg.empty() || reason.empty())
throw std::runtime_error("The test case result '" + state + "' must "
"be accompanied by a reason but not by an expected value");
return impl::test_case_result(state, -1, reason);
}
static impl::test_case_result
handle_result_with_reason_and_arg(const std::string& state,
const std::string& arg,
const std::string& reason)
{
PRE(state == "expected_exit" || state == "expected_signal");
if (reason.empty())
throw std::runtime_error("The test case result '" + state + "' must "
"be accompanied by a reason");
int value;
if (arg.empty()) {
value = -1;
} else {
try {
value = atf::text::to_type< int >(arg);
} catch (const std::runtime_error&) {
throw std::runtime_error("The value '" + arg + "' passed to the '" +
state + "' state must be an integer");
}
}
return impl::test_case_result(state, value, reason);
}
} // anonymous namespace
detail::atf_tp_reader::atf_tp_reader(std::istream& is) :
m_is(is)
{
}
detail::atf_tp_reader::~atf_tp_reader(void)
{
}
void
detail::atf_tp_reader::got_tc(
const std::string& ident ATF_DEFS_ATTRIBUTE_UNUSED,
const std::map< std::string, std::string >& md ATF_DEFS_ATTRIBUTE_UNUSED)
{
}
void
detail::atf_tp_reader::got_eof(void)
{
}
void
detail::atf_tp_reader::validate_and_insert(const std::string& name,
const std::string& value, const size_t lineno,
std::map< std::string, std::string >& md)
{
using atf::parser::parse_error;
if (value.empty())
throw parse_error(lineno, "The value for '" + name +"' cannot be "
"empty");
const std::string ident_regex = "^[_A-Za-z0-9]+$";
const std::string integer_regex = "^[0-9]+$";
if (name == "descr") {
// Any non-empty value is valid.
} else if (name == "has.cleanup") {
try {
(void)atf::text::to_bool(value);
} catch (const std::runtime_error&) {
throw parse_error(lineno, "The has.cleanup property requires a"
" boolean value");
}
} else if (name == "ident") {
if (!atf::text::match(value, ident_regex))
throw parse_error(lineno, "The identifier must match " +
ident_regex + "; was '" + value + "'");
} else if (name == "require.arch") {
} else if (name == "require.config") {
} else if (name == "require.files") {
} else if (name == "require.machine") {
} else if (name == "require.memory") {
try {
(void)atf::text::to_bytes(value);
} catch (const std::runtime_error&) {
throw parse_error(lineno, "The require.memory property requires an "
"integer value representing an amount of bytes");
}
} else if (name == "require.progs") {
} else if (name == "require.user") {
} else if (name == "timeout") {
if (!atf::text::match(value, integer_regex))
throw parse_error(lineno, "The timeout property requires an integer"
" value");
} else if (name == "use.fs") {
// Deprecated; ignore it.
} else if (name.size() > 2 && name[0] == 'X' && name[1] == '-') {
// Any non-empty value is valid.
} else {
throw parse_error(lineno, "Unknown property '" + name + "'");
}
md.insert(std::make_pair(name, value));
}
void
detail::atf_tp_reader::read(void)
{
using atf::parser::parse_error;
using namespace atf_tp;
std::pair< size_t, atf::parser::headers_map > hml =
atf::parser::read_headers(m_is, 1);
atf::parser::validate_content_type(hml.second,
"application/X-atf-tp", 1);
tokenizer tkz(m_is, hml.first);
atf::parser::parser< tokenizer > p(tkz);
try {
atf::parser::token t = p.expect(text_type, "property name");
if (t.text() != "ident")
throw parse_error(t.lineno(), "First property of a test case "
"must be 'ident'");
std::map< std::string, std::string > props;
do {
const std::string name = t.text();
t = p.expect(colon_type, "`:'");
const std::string value = atf::text::trim(p.rest_of_line());
t = p.expect(nl_type, "new line");
validate_and_insert(name, value, t.lineno(), props);
t = p.expect(eof_type, nl_type, text_type, "property name, new "
"line or eof");
if (t.type() == nl_type || t.type() == eof_type) {
const std::map< std::string, std::string >::const_iterator
iter = props.find("ident");
if (iter == props.end())
throw parse_error(t.lineno(), "Test case definition did "
"not define an 'ident' property");
ATF_PARSER_CALLBACK(p, got_tc((*iter).second, props));
props.clear();
if (t.type() == nl_type) {
t = p.expect(text_type, "property name");
if (t.text() != "ident")
throw parse_error(t.lineno(), "First property of a "
"test case must be 'ident'");
}
}
} while (t.type() != eof_type);
ATF_PARSER_CALLBACK(p, got_eof());
} catch (const parse_error& pe) {
p.add_error(pe);
p.reset(nl_type);
}
}
impl::test_case_result
detail::parse_test_case_result(const std::string& line)
{
std::string state, arg, reason;
tokenize_result(line, state, arg, reason);
if (state == "expected_death")
return handle_result_with_reason(state, arg, reason);
else if (state.compare(0, 13, "expected_exit") == 0)
return handle_result_with_reason_and_arg(state, arg, reason);
else if (state.compare(0, 16, "expected_failure") == 0)
return handle_result_with_reason(state, arg, reason);
else if (state.compare(0, 15, "expected_signal") == 0)
return handle_result_with_reason_and_arg(state, arg, reason);
else if (state.compare(0, 16, "expected_timeout") == 0)
return handle_result_with_reason(state, arg, reason);
else if (state == "failed")
return handle_result_with_reason(state, arg, reason);
else if (state == "passed")
return handle_result(state, arg, reason);
else if (state == "skipped")
return handle_result_with_reason(state, arg, reason);
else
throw std::runtime_error("Unknown test case result type in: " + line);
}
impl::atf_tps_writer::atf_tps_writer(std::ostream& os) :
m_os(os)
{
atf::parser::headers_map hm;
atf::parser::attrs_map ct_attrs;
ct_attrs["version"] = "3";
hm["Content-Type"] =
atf::parser::header_entry("Content-Type", "application/X-atf-tps",
ct_attrs);
atf::parser::write_headers(hm, m_os);
}
void
impl::atf_tps_writer::info(const std::string& what, const std::string& val)
{
m_os << "info: " << what << ", " << val << "\n";
m_os.flush();
}
void
impl::atf_tps_writer::ntps(size_t p_ntps)
{
m_os << "tps-count: " << p_ntps << "\n";
m_os.flush();
}
void
impl::atf_tps_writer::start_tp(const std::string& tp, size_t ntcs)
{
m_tpname = tp;
m_os << "tp-start: " << generate_timestamp() << ", " << tp << ", "
<< ntcs << "\n";
m_os.flush();
}
void
impl::atf_tps_writer::end_tp(const std::string& reason)
{
PRE(reason.find('\n') == std::string::npos);
if (reason.empty())
m_os << "tp-end: " << generate_timestamp() << ", " << m_tpname << "\n";
else
m_os << "tp-end: " << generate_timestamp() << ", " << m_tpname
<< ", " << reason << "\n";
m_os.flush();
}
void
impl::atf_tps_writer::start_tc(const std::string& tcname)
{
m_tcname = tcname;
m_os << "tc-start: " << generate_timestamp() << ", " << tcname << "\n";
m_os.flush();
}
void
impl::atf_tps_writer::stdout_tc(const std::string& line)
{
m_os << "tc-so:" << line << "\n";
check_stream(m_os);
m_os.flush();
check_stream(m_os);
}
void
impl::atf_tps_writer::stderr_tc(const std::string& line)
{
m_os << "tc-se:" << line << "\n";
check_stream(m_os);
m_os.flush();
check_stream(m_os);
}
void
impl::atf_tps_writer::end_tc(const std::string& state,
const std::string& reason)
{
std::string str = ", " + m_tcname + ", " + state;
if (!reason.empty())
str += ", " + reason;
m_os << "tc-end: " << generate_timestamp() << str << "\n";
m_os.flush();
}
impl::metadata
impl::get_metadata(const atf::fs::path& executable,
const atf::tests::vars_map& config)
{
get_metadata_params params(executable, config);
atf::process::child child =
atf::process::fork(get_metadata_child,
atf::process::stream_capture(),
atf::process::stream_inherit(),
static_cast< void * >(&params));
impl::pistream outin(child.stdout_fd());
metadata_reader parser(outin);
parser.read();
const atf::process::status status = child.wait();
if (!status.exited() || status.exitstatus() != EXIT_SUCCESS)
throw atf::parser::format_error("Test program returned failure "
"exit status for test case list");
return metadata(parser.get_tcs());
}
impl::test_case_result
impl::read_test_case_result(const atf::fs::path& results_path)
{
std::ifstream results_file(results_path.c_str());
if (!results_file)
throw std::runtime_error("Failed to open " + results_path.str());
std::string line, extra_line;
std::getline(results_file, line);
if (!results_file.good())
throw std::runtime_error("Results file is empty");
while (std::getline(results_file, extra_line).good())
line += "<<NEWLINE UNEXPECTED>>" + extra_line;
results_file.close();
return detail::parse_test_case_result(line);
}
namespace {
static volatile bool terminate_poll;
static void
sigchld_handler(const int signo ATF_DEFS_ATTRIBUTE_UNUSED)
{
terminate_poll = true;
}
class child_muxer : public impl::muxer {
impl::atf_tps_writer& m_writer;
void
line_callback(const size_t index, const std::string& line)
{
switch (index) {
case 0: m_writer.stdout_tc(line); break;
case 1: m_writer.stderr_tc(line); break;
default: UNREACHABLE;
}
}
public:
child_muxer(const int* fds, const size_t nfds,
impl::atf_tps_writer& writer) :
muxer(fds, nfds),
m_writer(writer)
{
}
};
} // anonymous namespace
std::pair< std::string, atf::process::status >
impl::run_test_case(const atf::fs::path& executable,
const std::string& test_case_name,
const std::string& test_case_part,
const atf::tests::vars_map& metadata,
const atf::tests::vars_map& config,
const atf::fs::path& resfile,
const atf::fs::path& workdir,
atf_tps_writer& writer)
{
// TODO: Capture termination signals and deliver them to the subprocess
// instead. Or maybe do something else; think about it.
test_case_params params(executable, test_case_name, test_case_part,
metadata, config, resfile, workdir);
atf::process::child child =
atf::process::fork(run_test_case_child,
atf::process::stream_capture(),
atf::process::stream_capture(),
static_cast< void * >(&params));
terminate_poll = false;
const atf::tests::vars_map::const_iterator iter = metadata.find("timeout");
INV(iter != metadata.end());
const unsigned int timeout =
atf::text::to_type< unsigned int >((*iter).second);
const pid_t child_pid = child.pid();
// Get the input stream of stdout and stderr.
impl::file_handle outfh = child.stdout_fd();
impl::file_handle errfh = child.stderr_fd();
bool timed_out = false;
// Process the test case's output and multiplex it into our output
// stream as we read it.
int fds[2] = {outfh.get(), errfh.get()};
child_muxer mux(fds, 2, writer);
try {
child_timer timeout_timer(timeout, child_pid, terminate_poll);
signal_programmer sigchld(SIGCHLD, sigchld_handler);
mux.mux(terminate_poll);
timed_out = timeout_timer.fired();
} catch (...) {
UNREACHABLE;
}
::killpg(child_pid, SIGKILL);
mux.flush();
atf::process::status status = child.wait();
std::string reason;
if (timed_out) {
// Don't assume the child process has been signaled due to the timeout
// expiration as older versions did. The child process may have exited
// but we may have timed out due to a subchild process getting stuck.
reason = "Test case timed out after " + atf::text::to_string(timeout) +
" " + (timeout == 1 ? "second" : "seconds");
}
return std::make_pair(reason, status);
}
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