1 /* 2 * libjingle 3 * Copyright 2014 Google Inc. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #ifndef TALK_MEDIA_BASE_EXECUTABLEHELPERS_H_ 29 #define TALK_MEDIA_BASE_EXECUTABLEHELPERS_H_ 30 31 #if defined(WEBRTC_MAC) && !defined(WEBRTC_IOS) 32 #include <mach-o/dyld.h> 33 #endif 34 35 #include <string> 36 37 #include "webrtc/base/logging.h" 38 #include "webrtc/base/pathutils.h" 39 40 namespace rtc { 41 42 // Returns the path to the running executable or an empty path. 43 // TODO(thorcarpenter): Consolidate with FluteClient::get_executable_dir. 44 inline Pathname GetExecutablePath() { 45 const int32_t kMaxExePathSize = 255; 46 #ifdef WIN32 47 TCHAR exe_path_buffer[kMaxExePathSize]; 48 DWORD copied_length = GetModuleFileName(NULL, // NULL = Current process 49 exe_path_buffer, kMaxExePathSize); 50 if (0 == copied_length) { 51 LOG(LS_ERROR) << "Copied length is zero"; 52 return rtc::Pathname(); 53 } 54 if (kMaxExePathSize == copied_length) { 55 LOG(LS_ERROR) << "Buffer too small"; 56 return rtc::Pathname(); 57 } 58 #ifdef UNICODE 59 std::wstring wdir(exe_path_buffer); 60 std::string dir_tmp(wdir.begin(), wdir.end()); 61 rtc::Pathname path(dir_tmp); 62 #else // UNICODE 63 rtc::Pathname path(exe_path_buffer); 64 #endif // UNICODE 65 #elif (defined(WEBRTC_MAC) && !defined(WEBRTC_IOS)) || defined(WEBRTC_LINUX) 66 char exe_path_buffer[kMaxExePathSize]; 67 #if defined(WEBRTC_MAC) && !defined(WEBRTC_IOS) 68 uint32_t copied_length = kMaxExePathSize - 1; 69 if (_NSGetExecutablePath(exe_path_buffer, &copied_length) == -1) { 70 LOG(LS_ERROR) << "Buffer too small"; 71 return rtc::Pathname(); 72 } 73 #elif defined WEBRTC_LINUX 74 int32_t copied_length = kMaxExePathSize - 1; 75 const char* kProcExeFmt = "/proc/%d/exe"; 76 char proc_exe_link[40]; 77 snprintf(proc_exe_link, sizeof(proc_exe_link), kProcExeFmt, getpid()); 78 copied_length = readlink(proc_exe_link, exe_path_buffer, copied_length); 79 if (copied_length == -1) { 80 LOG_ERR(LS_ERROR) << "Error reading link " << proc_exe_link; 81 return rtc::Pathname(); 82 } 83 if (copied_length == kMaxExePathSize - 1) { 84 LOG(LS_ERROR) << "Probably truncated result when reading link " 85 << proc_exe_link; 86 return rtc::Pathname(); 87 } 88 exe_path_buffer[copied_length] = '\0'; 89 #endif // WEBRTC_LINUX 90 rtc::Pathname path(exe_path_buffer); 91 #else // Android || iOS 92 rtc::Pathname path; 93 #endif // Mac || Linux 94 return path; 95 } 96 97 } // namespace rtc 98 99 #endif // TALK_MEDIA_BASE_EXECUTABLEHELPERS_H_ 100 101
