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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 | |
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