1 // Copyright (c) 2018 Marshall A. Greenblatt. All rights reserved. 2 // 3 // Redistribution and use in source and binary forms, with or without 4 // modification, are permitted provided that the following conditions are 5 // met: 6 // 7 // * Redistributions of source code must retain the above copyright 8 // notice, this list of conditions and the following disclaimer. 9 // * Redistributions in binary form must reproduce the above 10 // copyright notice, this list of conditions and the following disclaimer 11 // in the documentation and/or other materials provided with the 12 // distribution. 13 // * Neither the name of Google Inc. nor the name Chromium Embedded 14 // Framework nor the names of its contributors may be used to endorse 15 // or promote products derived from this software without specific prior 16 // written permission. 17 // 18 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 30 #ifndef CEF_INCLUDE_WRAPPER_CEF_LIBRARY_LOADER_H_ 31 #define CEF_INCLUDE_WRAPPER_CEF_LIBRARY_LOADER_H_ 32 #pragma once 33 34 #include "include/base/cef_build.h" 35 36 #ifdef __cplusplus 37 #include <string> 38 39 extern "C" { 40 #endif // __cplusplus 41 42 /// 43 // Load the CEF library at the specified |path|. Returns true (1) on 44 // success and false (0) on failure. 45 /// 46 int cef_load_library(const char* path); 47 48 /// 49 // Unload the CEF library that was previously loaded. Returns true (1) 50 // on success and false (0) on failure. 51 /// 52 int cef_unload_library(); 53 54 #ifdef __cplusplus 55 } 56 57 #if defined(OS_MAC) 58 59 /// 60 // Scoped helper for loading and unloading the CEF framework library at 61 // runtime from the expected location in the app bundle. Loading at runtime 62 // instead of linking directly is a requirement of the macOS sandbox 63 // implementation. 64 // 65 // Example usage in the main process: 66 // 67 // #include "include/wrapper/cef_library_loader.h" 68 // 69 // int main(int argc, char* argv[]) { 70 // // Dynamically load the CEF framework library. 71 // CefScopedLibraryLoader library_loader; 72 // if (!library_loader.LoadInMain()) 73 // return 1; 74 // 75 // // Continue with CEF initialization... 76 // } 77 // 78 // Example usage in the helper process: 79 // 80 // #include "include/cef_sandbox_mac.h" 81 // #include "include/wrapper/cef_library_loader.h" 82 // 83 // int main(int argc, char* argv[]) { 84 // // Initialize the macOS sandbox for this helper process. 85 // CefScopedSandboxContext sandbox_context; 86 // if (!sandbox_context.Initialize(argc, argv)) 87 // return 1; 88 // 89 // // Dynamically load the CEF framework library. 90 // CefScopedLibraryLoader library_loader; 91 // if (!library_loader.LoadInHelper()) 92 // return 1; 93 // 94 // // Continue with CEF initialization... 95 // } 96 /// 97 class CefScopedLibraryLoader { 98 public: 99 CefScopedLibraryLoader(); 100 101 CefScopedLibraryLoader(const CefScopedLibraryLoader&) = delete; 102 CefScopedLibraryLoader& operator=(const CefScopedLibraryLoader&) = delete; 103 104 ~CefScopedLibraryLoader(); 105 106 /// 107 // Load the CEF framework in the main process from the expected app 108 // bundle location relative to the executable. Returns true if the 109 // load succeeds. 110 /// LoadInMain()111 bool LoadInMain() { return Load(false); } 112 113 /// 114 // Load the CEF framework in the helper process from the expected app 115 // bundle location relative to the executable. Returns true if the 116 // load succeeds. 117 /// LoadInHelper()118 bool LoadInHelper() { return Load(true); } 119 120 private: 121 bool Load(bool helper); 122 123 bool loaded_; 124 }; 125 126 #endif // defined(OS_MAC) 127 #endif // __cplusplus 128 129 #endif // CEF_INCLUDE_WRAPPER_CEF_LIBRARY_LOADER_H_ 130