int uv_getaddrinfo(uv_loop_t* loop,
uv_getaddrinfo_t* req,
uv_getaddrinfo_cb cb,
const char* hostname,
const char* service,
const struct addrinfo* hints) {
size_t hostname_len;
size_t service_len;
size_t hints_len;
size_t len;
char* buf;
if (req == NULL || (hostname == NULL && service == NULL))
return -EINVAL;
hostname_len = hostname ? strlen(hostname) + 1 : 0;
service_len = service ? strlen(service) + 1 : 0;
hints_len = hints ? sizeof(*hints) : 0;
buf = uv__malloc(hostname_len + service_len + hints_len);
if (buf == NULL)
return -ENOMEM;
uv__req_init(loop, req, UV_GETADDRINFO);
req->loop = loop;
req->cb = cb;
req->addrinfo = NULL;
req->hints = NULL;
req->service = NULL;
req->hostname = NULL;
req->retcode = 0;
/* order matters, see uv_getaddrinfo_done() */
len = 0;
if (hints) {
req->hints = memcpy(buf + len, hints, sizeof(*hints));
len += sizeof(*hints);
}
if (service) {
req->service = memcpy(buf + len, service, service_len);
len += service_len;
}
if (hostname)
req->hostname = memcpy(buf + len, hostname, hostname_len);
if (cb) {
uv__work_submit(loop,
&req->work_req,
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;
}
}
int uv_queue_work(uv_loop_t* loop,
uv_work_t* req,
const char *buf,
size_t buf_len,
uv_after_work_cb after_work_cb) {
uv__req_init(loop, req, UV_WORK);
req->loop = loop;
req->after_work_cb = after_work_cb;
uv__work_submit(loop, &req->work_req, buf, buf_len, uv__queue_done);
return 0;
}
int uv_queue_work(uv_loop_t* loop, uv_work_t* req, uv_work_cb work_cb,
uv_after_work_cb after_work_cb) {
if (work_cb == NULL) return uv__set_artificial_error(loop, UV_EINVAL);
uv__req_init(loop, req, UV_WORK);
req->loop = loop;
req->work_cb = work_cb;
req->after_work_cb = after_work_cb;
uv__work_submit(loop, &req->work_req, uv__queue_work, uv__queue_done);
return 0;
}
int uv_queue_work(uv_loop_t* loop,
uv_work_t* req,
char *name,
uv_work_cb work_cb,
uv_after_work_cb after_work_cb) {
if (work_cb == NULL)
return UV_EINVAL;
uv__req_init(loop, req, UV_WORK);
req->loop = loop;
req->work_cb = work_cb;
req->after_work_cb = after_work_cb;
req->work_req.name = strdup(name);
uv__work_submit(loop, &req->work_req, uv__queue_work, uv__queue_done);
return 0;
}
/*
* Entry point for getnameinfo
* return 0 if a callback will be made
* return error code if validation fails
*/
int uv_getnameinfo(uv_loop_t* loop,
uv_getnameinfo_t* req,
uv_getnameinfo_cb getnameinfo_cb,
const struct sockaddr* addr,
int flags) {
if (req == NULL || addr == NULL)
return UV_EINVAL;
if (addr->sa_family == AF_INET) {
memcpy(&req->storage,
addr,
sizeof(struct sockaddr_in));
} else if (addr->sa_family == AF_INET6) {
memcpy(&req->storage,
addr,
sizeof(struct sockaddr_in6));
} else {
return UV_EINVAL;
}
UV_REQ_INIT(req, UV_GETNAMEINFO);
uv__req_register(loop, req);
req->getnameinfo_cb = getnameinfo_cb;
req->flags = flags;
req->loop = loop;
req->retcode = 0;
if (getnameinfo_cb) {
uv__work_submit(loop,
&req->work_req,
UV__WORK_SLOW_IO,
uv__getnameinfo_work,
uv__getnameinfo_done);
return 0;
} else {
uv__getnameinfo_work(&req->work_req);
uv__getnameinfo_done(&req->work_req, 0);
return req->retcode;
}
}
/*
* Entry point for getaddrinfo
* we convert the UTF-8 strings to UNICODE
* and save the UNICODE string pointers in the req
* We also copy hints so that caller does not need to keep memory until the
* callback.
* return 0 if a callback will be made
* return error code if validation fails
*
* To minimize allocation we calculate total size required,
* and copy all structs and referenced strings into the one block.
* Each size calculation is adjusted to avoid unaligned pointers.
*/
int uv_getaddrinfo(uv_loop_t* loop,
uv_getaddrinfo_t* req,
uv_getaddrinfo_cb getaddrinfo_cb,
const char* node,
const char* service,
const struct addrinfo* hints) {
int nodesize = 0;
int servicesize = 0;
int hintssize = 0;
char* alloc_ptr = NULL;
int err;
if (req == NULL || getaddrinfo_cb == NULL ||
(node == NULL && service == NULL)) {
err = WSAEINVAL;
goto error;
}
uv_req_init(loop, (uv_req_t*)req);
req->getaddrinfo_cb = getaddrinfo_cb;
req->res = NULL;
req->type = UV_GETADDRINFO;
req->loop = loop;
req->retcode = 0;
/* calculate required memory size for all input values */
if (node != NULL) {
nodesize = ALIGNED_SIZE(uv_utf8_to_utf16(node, NULL, 0) * sizeof(WCHAR));
if (nodesize == 0) {
err = GetLastError();
goto error;
}
}
if (service != NULL) {
servicesize = ALIGNED_SIZE(uv_utf8_to_utf16(service, NULL, 0) *
sizeof(WCHAR));
if (servicesize == 0) {
err = GetLastError();
goto error;
}
}
if (hints != NULL) {
hintssize = ALIGNED_SIZE(sizeof(struct addrinfoW));
}
/* allocate memory for inputs, and partition it as needed */
alloc_ptr = (char*)malloc(nodesize + servicesize + hintssize);
if (!alloc_ptr) {
err = WSAENOBUFS;
goto error;
}
/* save alloc_ptr now so we can free if error */
req->alloc = (void*)alloc_ptr;
/* convert node string to UTF16 into allocated memory and save pointer in */
/* the reques. */
if (node != NULL) {
req->node = (WCHAR*)alloc_ptr;
if (uv_utf8_to_utf16(node,
(WCHAR*) alloc_ptr,
nodesize / sizeof(WCHAR)) == 0) {
err = GetLastError();
goto error;
}
alloc_ptr += nodesize;
} else {
req->node = NULL;
}
/* convert service string to UTF16 into allocated memory and save pointer */
/* in the req. */
if (service != NULL) {
req->service = (WCHAR*)alloc_ptr;
if (uv_utf8_to_utf16(service,
(WCHAR*) alloc_ptr,
servicesize / sizeof(WCHAR)) == 0) {
err = GetLastError();
goto error;
}
alloc_ptr += servicesize;
} else {
req->service = NULL;
}
/* copy hints to allocated memory and save pointer in req */
if (hints != NULL) {
req->hints = (struct addrinfoW*)alloc_ptr;
req->hints->ai_family = hints->ai_family;
req->hints->ai_socktype = hints->ai_socktype;
req->hints->ai_protocol = hints->ai_protocol;
req->hints->ai_flags = hints->ai_flags;
req->hints->ai_addrlen = 0;
req->hints->ai_canonname = NULL;
req->hints->ai_addr = NULL;
req->hints->ai_next = NULL;
} else {
req->hints = NULL;
}
uv__work_submit(loop,
&req->work_req,
uv__getaddrinfo_work,
uv__getaddrinfo_done);
uv__req_register(loop, req);
return 0;
error:
if (req != NULL && req->alloc != NULL) {
free(req->alloc);
}
return uv_translate_sys_error(err);
}
/*
* Entry point for getaddrinfo
* we convert the UTF-8 strings to UNICODE
* and save the UNICODE string pointers in the req
* We also copy hints so that caller does not need to keep memory until the
* callback.
* return 0 if a callback will be made
* return error code if validation fails
*
* To minimize allocation we calculate total size required,
* and copy all structs and referenced strings into the one block.
* Each size calculation is adjusted to avoid unaligned pointers.
*/
int uv_getaddrinfo(uv_loop_t* loop,
uv_getaddrinfo_t* req,
uv_getaddrinfo_cb getaddrinfo_cb,
const char* node,
const char* service,
const struct addrinfo* hints) {
int nodesize = 0;
int servicesize = 0;
int hintssize = 0;
char* alloc_ptr = NULL;
int err;
if (req == NULL || (node == NULL && service == NULL)) {
return UV_EINVAL;
}
UV_REQ_INIT(req, UV_GETADDRINFO);
req->getaddrinfo_cb = getaddrinfo_cb;
req->addrinfo = NULL;
req->loop = loop;
req->retcode = 0;
/* calculate required memory size for all input values */
if (node != NULL) {
nodesize = ALIGNED_SIZE(MultiByteToWideChar(CP_UTF8, 0, node, -1, NULL, 0) *
sizeof(WCHAR));
if (nodesize == 0) {
err = GetLastError();
goto error;
}
}
if (service != NULL) {
servicesize = ALIGNED_SIZE(MultiByteToWideChar(CP_UTF8,
0,
service,
-1,
NULL,
0) *
sizeof(WCHAR));
if (servicesize == 0) {
err = GetLastError();
goto error;
}
}
if (hints != NULL) {
hintssize = ALIGNED_SIZE(sizeof(struct addrinfoW));
}
/* allocate memory for inputs, and partition it as needed */
alloc_ptr = (char*)uv__malloc(nodesize + servicesize + hintssize);
if (!alloc_ptr) {
err = WSAENOBUFS;
goto error;
}
/* save alloc_ptr now so we can free if error */
req->alloc = (void*)alloc_ptr;
/* Convert node string to UTF16 into allocated memory and save pointer in the
* request. */
if (node != NULL) {
req->node = (WCHAR*)alloc_ptr;
if (MultiByteToWideChar(CP_UTF8,
0,
node,
-1,
(WCHAR*) alloc_ptr,
nodesize / sizeof(WCHAR)) == 0) {
err = GetLastError();
goto error;
}
alloc_ptr += nodesize;
} else {
req->node = NULL;
}
/* Convert service string to UTF16 into allocated memory and save pointer in
* the req. */
if (service != NULL) {
req->service = (WCHAR*)alloc_ptr;
if (MultiByteToWideChar(CP_UTF8,
0,
service,
-1,
(WCHAR*) alloc_ptr,
servicesize / sizeof(WCHAR)) == 0) {
err = GetLastError();
goto error;
}
alloc_ptr += servicesize;
} else {
req->service = NULL;
}
/* copy hints to allocated memory and save pointer in req */
if (hints != NULL) {
req->addrinfow = (struct addrinfoW*)alloc_ptr;
req->addrinfow->ai_family = hints->ai_family;
req->addrinfow->ai_socktype = hints->ai_socktype;
req->addrinfow->ai_protocol = hints->ai_protocol;
req->addrinfow->ai_flags = hints->ai_flags;
req->addrinfow->ai_addrlen = 0;
req->addrinfow->ai_canonname = NULL;
req->addrinfow->ai_addr = NULL;
req->addrinfow->ai_next = NULL;
} else {
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_getaddrinfo(uv_loop_t* loop,
uv_getaddrinfo_t* req,
uv_getaddrinfo_cb cb,
const char* hostname,
const char* service,
const struct addrinfo* hints) {
char hostname_ascii[256];
size_t hostname_len;
size_t service_len;
size_t hints_len;
size_t len;
char* buf;
long rc;
if (req == NULL || (hostname == NULL && service == NULL))
return UV_EINVAL;
/* FIXME(bnoordhuis) IDNA does not seem to work z/OS,
* probably because it uses EBCDIC rather than ASCII.
*/
#ifdef __MVS__
(void) &hostname_ascii;
#else
if (hostname != NULL) {
rc = uv__idna_toascii(hostname,
hostname + strlen(hostname),
hostname_ascii,
hostname_ascii + sizeof(hostname_ascii));
if (rc < 0)
return rc;
hostname = hostname_ascii;
}
#endif
hostname_len = hostname ? strlen(hostname) + 1 : 0;
service_len = service ? strlen(service) + 1 : 0;
hints_len = hints ? sizeof(*hints) : 0;
buf = uv__malloc(hostname_len + service_len + hints_len);
if (buf == NULL)
return UV_ENOMEM;
uv__req_init(loop, req, UV_GETADDRINFO);
req->loop = loop;
req->cb = cb;
req->addrinfo = NULL;
req->hints = NULL;
req->service = NULL;
req->hostname = NULL;
req->retcode = 0;
/* order matters, see uv_getaddrinfo_done() */
len = 0;
if (hints) {
req->hints = memcpy(buf + len, hints, sizeof(*hints));
len += sizeof(*hints);
}
if (service) {
req->service = memcpy(buf + len, service, service_len);
len += service_len;
}
if (hostname)
req->hostname = memcpy(buf + len, hostname, hostname_len);
if (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;
}
}
