/* 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; }