diff options
| -rw-r--r-- | src/Makefile.test.include | 1 | ||||
| -rw-r--r-- | src/test/system_tests.cpp | 95 | ||||
| -rw-r--r-- | src/util/system.cpp | 41 | ||||
| -rw-r--r-- | src/util/system.h | 12 |
4 files changed, 149 insertions, 0 deletions
diff --git a/src/Makefile.test.include b/src/Makefile.test.include index b961f8d5b9..085ebdcb8e 100644 --- a/src/Makefile.test.include +++ b/src/Makefile.test.include @@ -265,6 +265,7 @@ BITCOIN_TESTS =\ test/skiplist_tests.cpp \ test/streams_tests.cpp \ test/sync_tests.cpp \ + test/system_tests.cpp \ test/util_threadnames_tests.cpp \ test/timedata_tests.cpp \ test/torcontrol_tests.cpp \ diff --git a/src/test/system_tests.cpp b/src/test/system_tests.cpp new file mode 100644 index 0000000000..a55145c738 --- /dev/null +++ b/src/test/system_tests.cpp @@ -0,0 +1,95 @@ +// Copyright (c) 2019 The Bitcoin Core developers +// Distributed under the MIT software license, see the accompanying +// file COPYING or http://www.opensource.org/licenses/mit-license.php. +// +#include <test/util/setup_common.h> +#include <util/system.h> +#include <univalue.h> + +#ifdef HAVE_BOOST_PROCESS +#include <boost/process.hpp> +#endif // HAVE_BOOST_PROCESS + +#include <boost/test/unit_test.hpp> + +BOOST_FIXTURE_TEST_SUITE(system_tests, BasicTestingSetup) + +// At least one test is required (in case HAVE_BOOST_PROCESS is not defined). +// Workaround for https://github.com/bitcoin/bitcoin/issues/19128 +BOOST_AUTO_TEST_CASE(dummy) +{ + BOOST_CHECK(true); +} + +#ifdef HAVE_BOOST_PROCESS + +bool checkMessage(const std::runtime_error& ex) +{ + // On Linux & Mac: "No such file or directory" + // On Windows: "The system cannot find the file specified." + const std::string what(ex.what()); + BOOST_CHECK(what.find("file") != std::string::npos); + return true; +} + +bool checkMessageFalse(const std::runtime_error& ex) +{ + BOOST_CHECK_EQUAL(ex.what(), std::string("RunCommandParseJSON error: process(false) returned 1: \n")); + return true; +} + +bool checkMessageStdErr(const std::runtime_error& ex) +{ + const std::string what(ex.what()); + BOOST_CHECK(what.find("RunCommandParseJSON error:") != std::string::npos); + return checkMessage(ex); +} + +BOOST_AUTO_TEST_CASE(run_command) +{ + { + const UniValue result = RunCommandParseJSON(""); + BOOST_CHECK(result.isNull()); + } + { +#ifdef WIN32 + // Windows requires single quotes to prevent escaping double quotes from the JSON... + const UniValue result = RunCommandParseJSON("echo '{\"success\": true}'"); +#else + // ... but Linux and macOS echo a single quote if it's used + const UniValue result = RunCommandParseJSON("echo \"{\"success\": true}\""); +#endif + BOOST_CHECK(result.isObject()); + const UniValue& success = find_value(result, "success"); + BOOST_CHECK(!success.isNull()); + BOOST_CHECK_EQUAL(success.getBool(), true); + } + { + // An invalid command is handled by Boost + BOOST_CHECK_EXCEPTION(RunCommandParseJSON("invalid_command"), boost::process::process_error, checkMessage); // Command failed + } + { + // Return non-zero exit code, no output to stderr + BOOST_CHECK_EXCEPTION(RunCommandParseJSON("false"), std::runtime_error, checkMessageFalse); + } + { + // Return non-zero exit code, with error message for stderr + BOOST_CHECK_EXCEPTION(RunCommandParseJSON("ls nosuchfile"), std::runtime_error, checkMessageStdErr); + } + { + BOOST_REQUIRE_THROW(RunCommandParseJSON("echo \"{\""), std::runtime_error); // Unable to parse JSON + } + // Test std::in, except for Windows +#ifndef WIN32 + { + const UniValue result = RunCommandParseJSON("cat", "{\"success\": true}"); + BOOST_CHECK(result.isObject()); + const UniValue& success = find_value(result, "success"); + BOOST_CHECK(!success.isNull()); + BOOST_CHECK_EQUAL(success.getBool(), true); + } +#endif +} +#endif // HAVE_BOOST_PROCESS + +BOOST_AUTO_TEST_SUITE_END() diff --git a/src/util/system.cpp b/src/util/system.cpp index 8164e884b1..066cfe8892 100644 --- a/src/util/system.cpp +++ b/src/util/system.cpp @@ -6,6 +6,10 @@ #include <sync.h> #include <util/system.h> +#ifdef HAVE_BOOST_PROCESS +#include <boost/process.hpp> +#endif // HAVE_BOOST_PROCESS + #include <chainparamsbase.h> #include <util/strencodings.h> #include <util/string.h> @@ -1161,6 +1165,43 @@ void runCommand(const std::string& strCommand) } #endif +#ifdef HAVE_BOOST_PROCESS +UniValue RunCommandParseJSON(const std::string& str_command, const std::string& str_std_in) +{ + namespace bp = boost::process; + + UniValue result_json; + bp::opstream stdin_stream; + bp::ipstream stdout_stream; + bp::ipstream stderr_stream; + + if (str_command.empty()) return UniValue::VNULL; + + bp::child c( + str_command, + bp::std_out > stdout_stream, + bp::std_err > stderr_stream, + bp::std_in < stdin_stream + ); + if (!str_std_in.empty()) { + stdin_stream << str_std_in << std::endl; + } + stdin_stream.pipe().close(); + + std::string result; + std::string error; + std::getline(stdout_stream, result); + std::getline(stderr_stream, error); + + c.wait(); + const int n_error = c.exit_code(); + if (n_error) throw std::runtime_error(strprintf("RunCommandParseJSON error: process(%s) returned %d: %s\n", str_command, n_error, error)); + if (!result_json.read(result)) throw std::runtime_error("Unable to parse JSON: " + result); + + return result_json; +} +#endif // HAVE_BOOST_PROCESS + void SetupEnvironment() { #ifdef HAVE_MALLOPT_ARENA_MAX diff --git a/src/util/system.h b/src/util/system.h index 0bd14cc9ea..1df194ca84 100644 --- a/src/util/system.h +++ b/src/util/system.h @@ -37,6 +37,8 @@ #include <boost/thread/condition_variable.hpp> // for boost::thread_interrupted +class UniValue; + // Application startup time (used for uptime calculation) int64_t GetStartupTime(); @@ -96,6 +98,16 @@ std::string ShellEscape(const std::string& arg); #if HAVE_SYSTEM void runCommand(const std::string& strCommand); #endif +#ifdef HAVE_BOOST_PROCESS +/** + * Execute a command which returns JSON, and parse the result. + * + * @param str_command The command to execute, including any arguments + * @param str_std_in string to pass to stdin + * @return parsed JSON + */ +UniValue RunCommandParseJSON(const std::string& str_command, const std::string& str_std_in=""); +#endif // HAVE_BOOST_PROCESS /** * Most paths passed as configuration arguments are treated as relative to |