464 lines
14 KiB
C
464 lines
14 KiB
C
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/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#include <assert.h>
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#include "uv.h"
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#include "internal.h"
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#include "req-inl.h"
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#include "idna.h"
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/* EAI_* constants. */
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#include <winsock2.h>
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/* Needed for ConvertInterfaceIndexToLuid and ConvertInterfaceLuidToNameA */
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#include <iphlpapi.h>
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int uv__getaddrinfo_translate_error(int sys_err) {
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switch (sys_err) {
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case 0: return 0;
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case WSATRY_AGAIN: return UV_EAI_AGAIN;
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case WSAEINVAL: return UV_EAI_BADFLAGS;
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case WSANO_RECOVERY: return UV_EAI_FAIL;
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case WSAEAFNOSUPPORT: return UV_EAI_FAMILY;
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case WSA_NOT_ENOUGH_MEMORY: return UV_EAI_MEMORY;
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case WSAHOST_NOT_FOUND: return UV_EAI_NONAME;
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case WSATYPE_NOT_FOUND: return UV_EAI_SERVICE;
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case WSAESOCKTNOSUPPORT: return UV_EAI_SOCKTYPE;
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default: return uv_translate_sys_error(sys_err);
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}
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}
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/*
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* MinGW is missing this
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*/
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#if !defined(_MSC_VER) && !defined(__MINGW64_VERSION_MAJOR)
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typedef struct addrinfoW {
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int ai_flags;
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int ai_family;
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int ai_socktype;
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int ai_protocol;
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size_t ai_addrlen;
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WCHAR* ai_canonname;
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struct sockaddr* ai_addr;
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struct addrinfoW* ai_next;
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} ADDRINFOW, *PADDRINFOW;
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DECLSPEC_IMPORT int WSAAPI GetAddrInfoW(const WCHAR* node,
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const WCHAR* service,
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const ADDRINFOW* hints,
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PADDRINFOW* result);
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DECLSPEC_IMPORT void WSAAPI FreeAddrInfoW(PADDRINFOW pAddrInfo);
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#endif
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/* Adjust size value to be multiple of 4. Use to keep pointer aligned.
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* Do we need different versions of this for different architectures? */
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#define ALIGNED_SIZE(X) ((((X) + 3) >> 2) << 2)
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#ifndef NDIS_IF_MAX_STRING_SIZE
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#define NDIS_IF_MAX_STRING_SIZE IF_MAX_STRING_SIZE
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#endif
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static void uv__getaddrinfo_work(struct uv__work* w) {
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uv_getaddrinfo_t* req;
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struct addrinfoW* hints;
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int err;
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req = container_of(w, uv_getaddrinfo_t, work_req);
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hints = req->addrinfow;
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req->addrinfow = NULL;
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err = GetAddrInfoW(req->node, req->service, hints, &req->addrinfow);
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req->retcode = uv__getaddrinfo_translate_error(err);
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}
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/*
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* Called from uv_run when complete. Call user specified callback
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* then free returned addrinfo
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* Returned addrinfo strings are converted from UTF-16 to UTF-8.
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*
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* To minimize allocation we calculate total size required,
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* and copy all structs and referenced strings into the one block.
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* Each size calculation is adjusted to avoid unaligned pointers.
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*/
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static void uv__getaddrinfo_done(struct uv__work* w, int status) {
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uv_getaddrinfo_t* req;
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int addrinfo_len = 0;
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int name_len = 0;
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size_t addrinfo_struct_len = ALIGNED_SIZE(sizeof(struct addrinfo));
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struct addrinfoW* addrinfow_ptr;
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struct addrinfo* addrinfo_ptr;
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char* alloc_ptr = NULL;
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char* cur_ptr = NULL;
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req = container_of(w, uv_getaddrinfo_t, work_req);
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/* release input parameter memory */
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uv__free(req->alloc);
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req->alloc = NULL;
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if (status == UV_ECANCELED) {
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assert(req->retcode == 0);
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req->retcode = UV_EAI_CANCELED;
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goto complete;
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}
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if (req->retcode == 0) {
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/* Convert addrinfoW to addrinfo. First calculate required length. */
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addrinfow_ptr = req->addrinfow;
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while (addrinfow_ptr != NULL) {
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addrinfo_len += addrinfo_struct_len +
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ALIGNED_SIZE(addrinfow_ptr->ai_addrlen);
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if (addrinfow_ptr->ai_canonname != NULL) {
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name_len = WideCharToMultiByte(CP_UTF8,
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0,
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addrinfow_ptr->ai_canonname,
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-1,
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NULL,
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0,
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NULL,
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NULL);
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if (name_len == 0) {
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req->retcode = uv_translate_sys_error(GetLastError());
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goto complete;
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}
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addrinfo_len += ALIGNED_SIZE(name_len);
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}
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addrinfow_ptr = addrinfow_ptr->ai_next;
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}
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/* allocate memory for addrinfo results */
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alloc_ptr = (char*)uv__malloc(addrinfo_len);
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/* do conversions */
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if (alloc_ptr != NULL) {
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cur_ptr = alloc_ptr;
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addrinfow_ptr = req->addrinfow;
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while (addrinfow_ptr != NULL) {
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/* copy addrinfo struct data */
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assert(cur_ptr + addrinfo_struct_len <= alloc_ptr + addrinfo_len);
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addrinfo_ptr = (struct addrinfo*)cur_ptr;
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addrinfo_ptr->ai_family = addrinfow_ptr->ai_family;
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addrinfo_ptr->ai_socktype = addrinfow_ptr->ai_socktype;
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addrinfo_ptr->ai_protocol = addrinfow_ptr->ai_protocol;
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addrinfo_ptr->ai_flags = addrinfow_ptr->ai_flags;
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addrinfo_ptr->ai_addrlen = addrinfow_ptr->ai_addrlen;
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addrinfo_ptr->ai_canonname = NULL;
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addrinfo_ptr->ai_addr = NULL;
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addrinfo_ptr->ai_next = NULL;
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cur_ptr += addrinfo_struct_len;
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/* copy sockaddr */
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if (addrinfo_ptr->ai_addrlen > 0) {
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assert(cur_ptr + addrinfo_ptr->ai_addrlen <=
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alloc_ptr + addrinfo_len);
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memcpy(cur_ptr, addrinfow_ptr->ai_addr, addrinfo_ptr->ai_addrlen);
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addrinfo_ptr->ai_addr = (struct sockaddr*)cur_ptr;
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cur_ptr += ALIGNED_SIZE(addrinfo_ptr->ai_addrlen);
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}
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/* convert canonical name to UTF-8 */
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if (addrinfow_ptr->ai_canonname != NULL) {
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name_len = WideCharToMultiByte(CP_UTF8,
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0,
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addrinfow_ptr->ai_canonname,
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-1,
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NULL,
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0,
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NULL,
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NULL);
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assert(name_len > 0);
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assert(cur_ptr + name_len <= alloc_ptr + addrinfo_len);
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name_len = WideCharToMultiByte(CP_UTF8,
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0,
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addrinfow_ptr->ai_canonname,
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-1,
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cur_ptr,
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name_len,
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NULL,
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NULL);
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assert(name_len > 0);
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addrinfo_ptr->ai_canonname = cur_ptr;
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cur_ptr += ALIGNED_SIZE(name_len);
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}
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assert(cur_ptr <= alloc_ptr + addrinfo_len);
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/* set next ptr */
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addrinfow_ptr = addrinfow_ptr->ai_next;
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if (addrinfow_ptr != NULL) {
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addrinfo_ptr->ai_next = (struct addrinfo*)cur_ptr;
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}
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}
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req->addrinfo = (struct addrinfo*)alloc_ptr;
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} else {
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req->retcode = UV_EAI_MEMORY;
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}
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}
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/* return memory to system */
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if (req->addrinfow != NULL) {
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FreeAddrInfoW(req->addrinfow);
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req->addrinfow = NULL;
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}
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complete:
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uv__req_unregister(req->loop, req);
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/* finally do callback with converted result */
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if (req->getaddrinfo_cb)
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req->getaddrinfo_cb(req, req->retcode, req->addrinfo);
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}
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void uv_freeaddrinfo(struct addrinfo* ai) {
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char* alloc_ptr = (char*)ai;
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/* release copied result memory */
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uv__free(alloc_ptr);
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}
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/*
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* Entry point for getaddrinfo
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* we convert the UTF-8 strings to UNICODE
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* and save the UNICODE string pointers in the req
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* We also copy hints so that caller does not need to keep memory until the
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* callback.
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* return 0 if a callback will be made
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* return error code if validation fails
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*
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* To minimize allocation we calculate total size required,
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* and copy all structs and referenced strings into the one block.
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* Each size calculation is adjusted to avoid unaligned pointers.
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*/
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int uv_getaddrinfo(uv_loop_t* loop,
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uv_getaddrinfo_t* req,
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uv_getaddrinfo_cb getaddrinfo_cb,
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const char* node,
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const char* service,
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const struct addrinfo* hints) {
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char hostname_ascii[256];
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int nodesize = 0;
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int servicesize = 0;
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int hintssize = 0;
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char* alloc_ptr = NULL;
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int err;
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long rc;
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if (req == NULL || (node == NULL && service == NULL)) {
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return UV_EINVAL;
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}
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UV_REQ_INIT(req, UV_GETADDRINFO);
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req->getaddrinfo_cb = getaddrinfo_cb;
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req->addrinfo = NULL;
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req->loop = loop;
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req->retcode = 0;
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/* calculate required memory size for all input values */
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if (node != NULL) {
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rc = uv__idna_toascii(node,
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node + strlen(node),
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hostname_ascii,
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hostname_ascii + sizeof(hostname_ascii));
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if (rc < 0)
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return rc;
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nodesize = ALIGNED_SIZE(MultiByteToWideChar(CP_UTF8, 0, hostname_ascii,
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-1, NULL, 0) * sizeof(WCHAR));
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if (nodesize == 0) {
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err = GetLastError();
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goto error;
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}
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node = hostname_ascii;
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}
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if (service != NULL) {
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servicesize = ALIGNED_SIZE(MultiByteToWideChar(CP_UTF8,
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0,
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service,
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-1,
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NULL,
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0) *
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sizeof(WCHAR));
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if (servicesize == 0) {
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err = GetLastError();
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goto error;
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}
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}
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if (hints != NULL) {
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hintssize = ALIGNED_SIZE(sizeof(struct addrinfoW));
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}
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/* allocate memory for inputs, and partition it as needed */
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alloc_ptr = (char*)uv__malloc(nodesize + servicesize + hintssize);
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if (!alloc_ptr) {
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err = WSAENOBUFS;
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goto error;
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}
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/* save alloc_ptr now so we can free if error */
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req->alloc = (void*)alloc_ptr;
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/* Convert node string to UTF16 into allocated memory and save pointer in the
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* request. */
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if (node != NULL) {
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req->node = (WCHAR*)alloc_ptr;
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if (MultiByteToWideChar(CP_UTF8,
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0,
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node,
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-1,
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(WCHAR*) alloc_ptr,
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nodesize / sizeof(WCHAR)) == 0) {
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err = GetLastError();
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goto error;
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}
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alloc_ptr += nodesize;
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} else {
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req->node = NULL;
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}
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/* Convert service string to UTF16 into allocated memory and save pointer in
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* the req. */
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if (service != NULL) {
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req->service = (WCHAR*)alloc_ptr;
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if (MultiByteToWideChar(CP_UTF8,
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0,
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service,
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-1,
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(WCHAR*) alloc_ptr,
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servicesize / sizeof(WCHAR)) == 0) {
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err = GetLastError();
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goto error;
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}
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alloc_ptr += servicesize;
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} else {
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req->service = NULL;
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}
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/* copy hints to allocated memory and save pointer in req */
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if (hints != NULL) {
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req->addrinfow = (struct addrinfoW*)alloc_ptr;
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req->addrinfow->ai_family = hints->ai_family;
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req->addrinfow->ai_socktype = hints->ai_socktype;
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req->addrinfow->ai_protocol = hints->ai_protocol;
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req->addrinfow->ai_flags = hints->ai_flags;
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req->addrinfow->ai_addrlen = 0;
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req->addrinfow->ai_canonname = NULL;
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req->addrinfow->ai_addr = NULL;
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req->addrinfow->ai_next = NULL;
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} else {
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|
|
req->addrinfow = NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
uv__req_register(loop, req);
|
||
|
|
|
||
|
|
if (getaddrinfo_cb) {
|
||
|
|
uv__work_submit(loop,
|
||
|
|
&req->work_req,
|
||
|
|
UV__WORK_SLOW_IO,
|
||
|
|
uv__getaddrinfo_work,
|
||
|
|
uv__getaddrinfo_done);
|
||
|
|
return 0;
|
||
|
|
} else {
|
||
|
|
uv__getaddrinfo_work(&req->work_req);
|
||
|
|
uv__getaddrinfo_done(&req->work_req, 0);
|
||
|
|
return req->retcode;
|
||
|
|
}
|
||
|
|
|
||
|
|
error:
|
||
|
|
if (req != NULL) {
|
||
|
|
uv__free(req->alloc);
|
||
|
|
req->alloc = NULL;
|
||
|
|
}
|
||
|
|
return uv_translate_sys_error(err);
|
||
|
|
}
|
||
|
|
|
||
|
|
int uv_if_indextoname(unsigned int ifindex, char* buffer, size_t* size) {
|
||
|
|
NET_LUID luid;
|
||
|
|
wchar_t wname[NDIS_IF_MAX_STRING_SIZE + 1]; /* Add one for the NUL. */
|
||
|
|
DWORD bufsize;
|
||
|
|
int r;
|
||
|
|
|
||
|
|
if (buffer == NULL || size == NULL || *size == 0)
|
||
|
|
return UV_EINVAL;
|
||
|
|
|
||
|
|
r = ConvertInterfaceIndexToLuid(ifindex, &luid);
|
||
|
|
|
||
|
|
if (r != 0)
|
||
|
|
return uv_translate_sys_error(r);
|
||
|
|
|
||
|
|
r = ConvertInterfaceLuidToNameW(&luid, wname, ARRAY_SIZE(wname));
|
||
|
|
|
||
|
|
if (r != 0)
|
||
|
|
return uv_translate_sys_error(r);
|
||
|
|
|
||
|
|
/* Check how much space we need */
|
||
|
|
bufsize = WideCharToMultiByte(CP_UTF8, 0, wname, -1, NULL, 0, NULL, NULL);
|
||
|
|
|
||
|
|
if (bufsize == 0) {
|
||
|
|
return uv_translate_sys_error(GetLastError());
|
||
|
|
} else if (bufsize > *size) {
|
||
|
|
*size = bufsize;
|
||
|
|
return UV_ENOBUFS;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Convert to UTF-8 */
|
||
|
|
bufsize = WideCharToMultiByte(CP_UTF8,
|
||
|
|
0,
|
||
|
|
wname,
|
||
|
|
-1,
|
||
|
|
buffer,
|
||
|
|
*size,
|
||
|
|
NULL,
|
||
|
|
NULL);
|
||
|
|
|
||
|
|
if (bufsize == 0)
|
||
|
|
return uv_translate_sys_error(GetLastError());
|
||
|
|
|
||
|
|
*size = bufsize - 1;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int uv_if_indextoiid(unsigned int ifindex, char* buffer, size_t* size) {
|
||
|
|
int r;
|
||
|
|
|
||
|
|
if (buffer == NULL || size == NULL || *size == 0)
|
||
|
|
return UV_EINVAL;
|
||
|
|
|
||
|
|
r = snprintf(buffer, *size, "%d", ifindex);
|
||
|
|
|
||
|
|
if (r < 0)
|
||
|
|
return uv_translate_sys_error(r);
|
||
|
|
|
||
|
|
if (r >= (int) *size) {
|
||
|
|
*size = r + 1;
|
||
|
|
return UV_ENOBUFS;
|
||
|
|
}
|
||
|
|
|
||
|
|
*size = r;
|
||
|
|
return 0;
|
||
|
|
}
|