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/*
* libjingle
* Copyright 2014 Google Inc.
*
* 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.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
#ifndef TALK_MEDIA_BASE_EXECUTABLEHELPERS_H_
#define TALK_MEDIA_BASE_EXECUTABLEHELPERS_H_
#if defined(WEBRTC_MAC) && !defined(WEBRTC_IOS)
#include <mach-o/dyld.h>
#endif
#include <string>
#include "webrtc/base/logging.h"
#include "webrtc/base/pathutils.h"
namespace rtc {
// Returns the path to the running executable or an empty path.
// TODO(thorcarpenter): Consolidate with FluteClient::get_executable_dir.
inline Pathname GetExecutablePath() {
const int32_t kMaxExePathSize = 255;
#ifdef WIN32
TCHAR exe_path_buffer[kMaxExePathSize];
DWORD copied_length = GetModuleFileName(NULL, // NULL = Current process
exe_path_buffer, kMaxExePathSize);
if (0 == copied_length) {
LOG(LS_ERROR) << "Copied length is zero";
return rtc::Pathname();
}
if (kMaxExePathSize == copied_length) {
LOG(LS_ERROR) << "Buffer too small";
return rtc::Pathname();
}
#ifdef UNICODE
std::wstring wdir(exe_path_buffer);
std::string dir_tmp(wdir.begin(), wdir.end());
rtc::Pathname path(dir_tmp);
#else // UNICODE
rtc::Pathname path(exe_path_buffer);
#endif // UNICODE
#elif (defined(WEBRTC_MAC) && !defined(WEBRTC_IOS)) || defined(WEBRTC_LINUX)
char exe_path_buffer[kMaxExePathSize];
#if defined(WEBRTC_MAC) && !defined(WEBRTC_IOS)
uint32_t copied_length = kMaxExePathSize - 1;
if (_NSGetExecutablePath(exe_path_buffer, &copied_length) == -1) {
LOG(LS_ERROR) << "Buffer too small";
return rtc::Pathname();
}
#elif defined WEBRTC_LINUX
int32_t copied_length = kMaxExePathSize - 1;
const char* kProcExeFmt = "/proc/%d/exe";
char proc_exe_link[40];
snprintf(proc_exe_link, sizeof(proc_exe_link), kProcExeFmt, getpid());
copied_length = readlink(proc_exe_link, exe_path_buffer, copied_length);
if (copied_length == -1) {
LOG_ERR(LS_ERROR) << "Error reading link " << proc_exe_link;
return rtc::Pathname();
}
if (copied_length == kMaxExePathSize - 1) {
LOG(LS_ERROR) << "Probably truncated result when reading link "
<< proc_exe_link;
return rtc::Pathname();
}
exe_path_buffer[copied_length] = '\0';
#endif // WEBRTC_LINUX
rtc::Pathname path(exe_path_buffer);
#else // Android || iOS
rtc::Pathname path;
#endif // Mac || Linux
return path;
}
} // namespace rtc
#endif // TALK_MEDIA_BASE_EXECUTABLEHELPERS_H_
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