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// Copyright (c) 2011-2016 Ryan Prichard
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.
#include "AgentLocation.h"
#include <windows.h>
#include <string>
#include "../shared/WinptyAssert.h"
#include "LibWinptyException.h"
#define AGENT_EXE L"winpty-agent.exe"
static HMODULE getCurrentModule() {
HMODULE module;
if (!GetModuleHandleExW(
GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS |
GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT,
reinterpret_cast<LPCWSTR>(getCurrentModule),
&module)) {
ASSERT(false && "GetModuleHandleEx failed");
}
return module;
}
static std::wstring getModuleFileName(HMODULE module) {
const int bufsize = 4096;
wchar_t path[bufsize];
int size = GetModuleFileNameW(module, path, bufsize);
ASSERT(size != 0 && size != bufsize);
return std::wstring(path);
}
static std::wstring dirname(const std::wstring &path) {
std::wstring::size_type pos = path.find_last_of(L"\\/");
if (pos == std::wstring::npos) {
return L"";
} else {
return path.substr(0, pos);
}
}
static bool pathExists(const std::wstring &path) {
return GetFileAttributesW(path.c_str()) != 0xFFFFFFFF;
}
std::wstring findAgentProgram() {
std::wstring progDir = dirname(getModuleFileName(getCurrentModule()));
std::wstring ret = progDir + (L"\\" AGENT_EXE);
if (!pathExists(ret)) {
throw LibWinptyException(
WINPTY_ERROR_AGENT_EXE_MISSING,
(L"agent executable does not exist: '" + ret + L"'").c_str());
}
return ret;
}
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