OLD | NEW |
---|---|
1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "base/native_library.h" | 5 #include "base/native_library.h" |
6 | 6 |
7 #include <dlfcn.h> | 7 #include <dlfcn.h> |
8 #include <mach-o/getsect.h> | 8 #include <mach-o/getsect.h> |
9 | 9 |
10 #include "base/files/file_path.h" | 10 #include "base/files/file_path.h" |
11 #include "base/files/file_util.h" | 11 #include "base/files/file_util.h" |
12 #include "base/logging.h" | 12 #include "base/logging.h" |
13 #include "base/mac/scoped_cftyperef.h" | 13 #include "base/mac/scoped_cftyperef.h" |
14 #include "base/strings/string_util.h" | 14 #include "base/strings/string_util.h" |
15 #include "base/strings/utf_string_conversions.h" | 15 #include "base/strings/utf_string_conversions.h" |
16 #include "base/threading/thread_restrictions.h" | 16 #include "base/threading/thread_restrictions.h" |
17 | 17 |
18 namespace base { | 18 namespace base { |
19 | 19 |
20 static NativeLibraryObjCStatus GetObjCStatusForImage( | 20 static NativeLibraryObjCStatus GetObjCStatusForImage( |
21 const void* function_pointer) { | 21 const void* function_pointer) { |
22 Dl_info info; | 22 Dl_info info; |
23 if (!dladdr(function_pointer, &info)) | 23 if (!dladdr(function_pointer, &info)) |
24 return OBJC_UNKNOWN; | 24 return OBJC_UNKNOWN; |
25 | 25 |
26 // See if the the image contains an "ObjC image info" segment. This method | |
Lei Zhang
2016/06/07 01:25:39
And self-reviewing after sending out the CL... I p
| |
27 // of testing is used in _CFBundleGrokObjcImageInfoFromFile in | |
28 // CF-744/CFBundle.c, around lines 2447-2474. | |
29 // | |
30 // In 32-bit images, ObjC can be recognized in __OBJC,__image_info, whereas | |
31 // in 64-bit, the data is in __DATA,__objc_imageinfo. | |
32 #if __LP64__ | |
33 const section_64* section = getsectbynamefromheader_64( | 26 const section_64* section = getsectbynamefromheader_64( |
34 reinterpret_cast<const struct mach_header_64*>(info.dli_fbase), | 27 reinterpret_cast<const struct mach_header_64*>(info.dli_fbase), |
35 SEG_DATA, "__objc_imageinfo"); | 28 SEG_DATA, "__objc_imageinfo"); |
36 #else | 29 return section ? OBJC_PRESENT : OBJC_NOT_PRESENT; |
37 const section* section = getsectbynamefromheader( | |
38 reinterpret_cast<const struct mach_header*>(info.dli_fbase), | |
39 SEG_OBJC, "__image_info"); | |
40 #endif | |
41 return section == NULL ? OBJC_NOT_PRESENT : OBJC_PRESENT; | |
42 } | 30 } |
43 | 31 |
44 std::string NativeLibraryLoadError::ToString() const { | 32 std::string NativeLibraryLoadError::ToString() const { |
45 return message; | 33 return message; |
46 } | 34 } |
47 | 35 |
48 // static | 36 // static |
49 NativeLibrary LoadNativeLibrary(const base::FilePath& library_path, | 37 NativeLibrary LoadNativeLibrary(const FilePath& library_path, |
50 NativeLibraryLoadError* error) { | 38 NativeLibraryLoadError* error) { |
51 // dlopen() etc. open the file off disk. | 39 // dlopen() etc. open the file off disk. |
52 if (library_path.Extension() == "dylib" || !DirectoryExists(library_path)) { | 40 if (library_path.Extension() == "dylib" || !DirectoryExists(library_path)) { |
53 void* dylib = dlopen(library_path.value().c_str(), RTLD_LAZY); | 41 void* dylib = dlopen(library_path.value().c_str(), RTLD_LAZY); |
54 if (!dylib) { | 42 if (!dylib) { |
55 if (error) | 43 if (error) |
56 error->message = dlerror(); | 44 error->message = dlerror(); |
57 return NULL; | 45 return NULL; |
58 } | 46 } |
59 NativeLibrary native_lib = new NativeLibraryStruct(); | 47 NativeLibrary native_lib = new NativeLibraryStruct(); |
60 native_lib->type = DYNAMIC_LIB; | 48 native_lib->type = DYNAMIC_LIB; |
61 native_lib->dylib = dylib; | 49 native_lib->dylib = dylib; |
62 native_lib->objc_status = OBJC_UNKNOWN; | 50 native_lib->objc_status = OBJC_UNKNOWN; |
63 return native_lib; | 51 return native_lib; |
64 } | 52 } |
65 base::ScopedCFTypeRef<CFURLRef> url(CFURLCreateFromFileSystemRepresentation( | 53 ScopedCFTypeRef<CFURLRef> url(CFURLCreateFromFileSystemRepresentation( |
66 kCFAllocatorDefault, | 54 kCFAllocatorDefault, |
67 (const UInt8*)library_path.value().c_str(), | 55 (const UInt8*)library_path.value().c_str(), |
68 library_path.value().length(), | 56 library_path.value().length(), |
69 true)); | 57 true)); |
70 if (!url) | 58 if (!url) |
71 return NULL; | 59 return NULL; |
72 CFBundleRef bundle = CFBundleCreate(kCFAllocatorDefault, url.get()); | 60 CFBundleRef bundle = CFBundleCreate(kCFAllocatorDefault, url.get()); |
73 if (!bundle) | 61 if (!bundle) |
74 return NULL; | 62 return NULL; |
75 | 63 |
(...skipping 20 matching lines...) Expand all Loading... | |
96 "segment. library->objc_status = " << library->objc_status; | 84 "segment. library->objc_status = " << library->objc_status; |
97 // Deliberately do not CFRelease the bundle or dlclose the dylib because | 85 // Deliberately do not CFRelease the bundle or dlclose the dylib because |
98 // doing so can corrupt the ObjC runtime method caches. See | 86 // doing so can corrupt the ObjC runtime method caches. See |
99 // http://crbug.com/172319 for details. | 87 // http://crbug.com/172319 for details. |
100 } | 88 } |
101 delete library; | 89 delete library; |
102 } | 90 } |
103 | 91 |
104 // static | 92 // static |
105 void* GetFunctionPointerFromNativeLibrary(NativeLibrary library, | 93 void* GetFunctionPointerFromNativeLibrary(NativeLibrary library, |
106 const char* name) { | 94 StringPiece name) { |
107 void* function_pointer = NULL; | 95 void* function_pointer = NULL; |
108 | 96 |
109 // Get the function pointer using the right API for the type. | 97 // Get the function pointer using the right API for the type. |
110 if (library->type == BUNDLE) { | 98 if (library->type == BUNDLE) { |
111 base::ScopedCFTypeRef<CFStringRef> symbol_name(CFStringCreateWithCString( | 99 ScopedCFTypeRef<CFStringRef> symbol_name(CFStringCreateWithCString( |
112 kCFAllocatorDefault, name, kCFStringEncodingUTF8)); | 100 kCFAllocatorDefault, name.data(), kCFStringEncodingUTF8)); |
113 function_pointer = CFBundleGetFunctionPointerForName(library->bundle, | 101 function_pointer = CFBundleGetFunctionPointerForName(library->bundle, |
114 symbol_name); | 102 symbol_name); |
115 } else { | 103 } else { |
116 function_pointer = dlsym(library->dylib, name); | 104 function_pointer = dlsym(library->dylib, name.data()); |
117 } | 105 } |
118 | 106 |
119 // If this library hasn't been tested for having ObjC, use the function | 107 // If this library hasn't been tested for having ObjC, use the function |
120 // pointer to look up the section information for the library. | 108 // pointer to look up the section information for the library. |
121 if (function_pointer && library->objc_status == OBJC_UNKNOWN) | 109 if (function_pointer && library->objc_status == OBJC_UNKNOWN) |
122 library->objc_status = GetObjCStatusForImage(function_pointer); | 110 library->objc_status = GetObjCStatusForImage(function_pointer); |
123 | 111 |
124 return function_pointer; | 112 return function_pointer; |
125 } | 113 } |
126 | 114 |
127 // static | 115 // static |
128 string16 GetNativeLibraryName(const string16& name) { | 116 string16 GetNativeLibraryName(StringPiece16 name) { |
129 return name + ASCIIToUTF16(".dylib"); | 117 return name.as_string() + ASCIIToUTF16(".dylib"); |
Lei Zhang
2016/06/07 01:39:52
BTW, I suspect this is wrong, and it should be lib
xhwang
2016/06/07 16:39:27
+1
Mark Mentovai
2016/06/10 20:06:18
Lei Zhang wrote:
| |
130 } | 118 } |
131 | 119 |
132 } // namespace base | 120 } // namespace base |
OLD | NEW |