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Execute do/undo commands non-elevated (#1022)

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pgrunzjr 2023-03-27 09:15:35 -05:00 committed by GitHub
parent 6f02274dc4
commit 6a914f7016
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2 changed files with 40 additions and 36 deletions
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71
src/process.cpp
View File

@ -49,14 +49,6 @@ void process_end(bp::child &proc, bp::group &proc_handle) {
proc.wait();
}
int exe_with_full_privs(const std::string &cmd, bp::environment &env, file_t &file, std::error_code &ec) {
if(!file) {
return bp::system(cmd, env, bp::std_out > bp::null, bp::std_err > bp::null, ec);
}
return bp::system(cmd, env, bp::std_out > file.get(), bp::std_err > file.get(), ec);
}
boost::filesystem::path find_working_directory(const std::string &cmd, bp::environment &env) {
// Parse the raw command string into parts to get the actual command portion
#ifdef _WIN32
@ -100,25 +92,25 @@ int proc_t::execute(int app_id) {
return 404;
}
_app_id = app_id;
auto &proc = *iter;
_app_id = app_id;
_app = *iter;
_undo_begin = std::begin(proc.prep_cmds);
_undo_it = _undo_begin;
_app_prep_begin = std::begin(_app.prep_cmds);
_app_prep_it = _app_prep_begin;
if(!proc.output.empty() && proc.output != "null"sv) {
if(!_app.output.empty() && _app.output != "null"sv) {
#ifdef _WIN32
// fopen() interprets the filename as an ANSI string on Windows, so we must convert it
// to UTF-16 and use the wchar_t variants for proper Unicode log file path support.
std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>, wchar_t> converter;
auto woutput = converter.from_bytes(proc.output);
auto woutput = converter.from_bytes(_app.output);
// Use _SH_DENYNO to allow us to open this log file again for writing even if it is
// still open from a previous execution. This is required to handle the case of a
// detached process executing again while the previous process is still running.
_pipe.reset(_wfsopen(woutput.c_str(), L"a", _SH_DENYNO));
#else
_pipe.reset(fopen(proc.output.c_str(), "a"));
_pipe.reset(fopen(_app.output.c_str(), "a"));
#endif
}
@ -128,27 +120,33 @@ int proc_t::execute(int app_id) {
terminate();
});
for(; _undo_it != std::end(proc.prep_cmds); ++_undo_it) {
auto &cmd = _undo_it->do_cmd;
for(; _app_prep_it != std::end(_app.prep_cmds); ++_app_prep_it) {
auto &cmd = _app_prep_it->do_cmd;
BOOST_LOG(info) << "Executing: ["sv << cmd << ']';
auto ret = exe_with_full_privs(cmd, _env, _pipe, ec);
boost::filesystem::path working_dir = _app.working_dir.empty() ?
find_working_directory(cmd, _env) :
boost::filesystem::path(_app.working_dir);
BOOST_LOG(info) << "Executing Do Cmd: ["sv << cmd << ']';
auto child = platf::run_unprivileged(cmd, working_dir, _env, _pipe.get(), ec, nullptr);
if(ec) {
BOOST_LOG(error) << "Couldn't run ["sv << cmd << "]: System: "sv << ec.message();
return -1;
}
child.wait();
auto ret = child.exit_code();
if(ret != 0) {
BOOST_LOG(error) << '[' << cmd << "] failed with code ["sv << ret << ']';
return -1;
}
}
for(auto &cmd : proc.detached) {
boost::filesystem::path working_dir = proc.working_dir.empty() ?
for(auto &cmd : _app.detached) {
boost::filesystem::path working_dir = _app.working_dir.empty() ?
find_working_directory(cmd, _env) :
boost::filesystem::path(proc.working_dir);
boost::filesystem::path(_app.working_dir);
BOOST_LOG(info) << "Spawning ["sv << cmd << "] in ["sv << working_dir << ']';
auto child = platf::run_unprivileged(cmd, working_dir, _env, _pipe.get(), ec, nullptr);
if(ec) {
@ -159,18 +157,18 @@ int proc_t::execute(int app_id) {
}
}
if(proc.cmd.empty()) {
if(_app.cmd.empty()) {
BOOST_LOG(info) << "Executing [Desktop]"sv;
placebo = true;
}
else {
boost::filesystem::path working_dir = proc.working_dir.empty() ?
find_working_directory(proc.cmd, _env) :
boost::filesystem::path(proc.working_dir);
BOOST_LOG(info) << "Executing: ["sv << proc.cmd << "] in ["sv << working_dir << ']';
_process = platf::run_unprivileged(proc.cmd, working_dir, _env, _pipe.get(), ec, &_process_handle);
boost::filesystem::path working_dir = _app.working_dir.empty() ?
find_working_directory(_app.cmd, _env) :
boost::filesystem::path(_app.working_dir);
BOOST_LOG(info) << "Executing: ["sv << _app.cmd << "] in ["sv << working_dir << ']';
_process = platf::run_unprivileged(_app.cmd, working_dir, _env, _pipe.get(), ec, &_process_handle);
if(ec) {
BOOST_LOG(warning) << "Couldn't run ["sv << proc.cmd << "]: System: "sv << ec.message();
BOOST_LOG(warning) << "Couldn't run ["sv << _app.cmd << "]: System: "sv << ec.message();
return -1;
}
}
@ -203,21 +201,26 @@ void proc_t::terminate() {
_process_handle = bp::group();
_app_id = -1;
for(; _undo_it != _undo_begin; --_undo_it) {
auto &cmd = (_undo_it - 1)->undo_cmd;
for(; _app_prep_it != _app_prep_begin; --_app_prep_it) {
auto &cmd = (_app_prep_it - 1)->undo_cmd;
if(cmd.empty()) {
continue;
}
BOOST_LOG(info) << "Executing: ["sv << cmd << ']';
auto ret = exe_with_full_privs(cmd, _env, _pipe, ec);
boost::filesystem::path working_dir = _app.working_dir.empty() ?
find_working_directory(cmd, _env) :
boost::filesystem::path(_app.working_dir);
BOOST_LOG(info) << "Executing Undo Cmd: ["sv << cmd << ']';
auto child = platf::run_unprivileged(cmd, working_dir, _env, _pipe.get(), ec, nullptr);
if(ec) {
BOOST_LOG(warning) << "System: "sv << ec.message();
}
child.wait();
auto ret = child.exit_code();
if(ret != 0) {
BOOST_LOG(warning) << "Return code ["sv << ret << ']';
}

5
src/process.h
View File

@ -87,6 +87,7 @@ private:
boost::process::environment _env;
std::vector<ctx_t> _apps;
ctx_t _app;
// If no command associated with _app_id, yet it's still running
bool placebo {};
@ -95,8 +96,8 @@ private:
boost::process::group _process_handle;
file_t _pipe;
std::vector<cmd_t>::const_iterator _undo_it;
std::vector<cmd_t>::const_iterator _undo_begin;
std::vector<cmd_t>::const_iterator _app_prep_it;
std::vector<cmd_t>::const_iterator _app_prep_begin;
};
/**