| /* Copyright Joyent, Inc. and other Node contributors. All rights reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to |
| * deal in the Software without restriction, including without limitation the |
| * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
| * sell copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| * IN THE SOFTWARE. |
| */ |
| |
| #include "uv.h" |
| #include "internal.h" |
| |
| static int uv__dlerror(uv_lib_t* lib, int errorno); |
| |
| |
| int uv_dlopen(const char* filename, uv_lib_t* lib) { |
| WCHAR filename_w[32768]; |
| |
| lib->handle = NULL; |
| lib->errmsg = NULL; |
| |
| if (!uv_utf8_to_utf16(filename, filename_w, ARRAY_SIZE(filename_w))) { |
| return uv__dlerror(lib, GetLastError()); |
| } |
| |
| lib->handle = LoadLibraryExW(filename_w, NULL, LOAD_WITH_ALTERED_SEARCH_PATH); |
| if (lib->handle == NULL) { |
| return uv__dlerror(lib, GetLastError()); |
| } |
| |
| return 0; |
| } |
| |
| |
| void uv_dlclose(uv_lib_t* lib) { |
| if (lib->errmsg) { |
| LocalFree((void*)lib->errmsg); |
| lib->errmsg = NULL; |
| } |
| |
| if (lib->handle) { |
| /* Ignore errors. No good way to signal them without leaking memory. */ |
| FreeLibrary(lib->handle); |
| lib->handle = NULL; |
| } |
| } |
| |
| |
| int uv_dlsym(uv_lib_t* lib, const char* name, void** ptr) { |
| *ptr = (void*) GetProcAddress(lib->handle, name); |
| return uv__dlerror(lib, *ptr ? 0 : GetLastError()); |
| } |
| |
| |
| const char* uv_dlerror(uv_lib_t* lib) { |
| return lib->errmsg ? lib->errmsg : "no error"; |
| } |
| |
| |
| static int uv__dlerror(uv_lib_t* lib, int errorno) { |
| if (lib->errmsg) { |
| LocalFree((void*)lib->errmsg); |
| lib->errmsg = NULL; |
| } |
| |
| if (errorno) { |
| FormatMessageA(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | |
| FORMAT_MESSAGE_IGNORE_INSERTS, NULL, errorno, |
| MAKELANGID(LANG_ENGLISH, SUBLANG_ENGLISH_US), |
| (LPSTR)&lib->errmsg, 0, NULL); |
| } |
| |
| return errorno ? -1 : 0; |
| } |