diff options
Diffstat (limited to 'Utilities/cmlibuv/src/unix/getaddrinfo.c')
| -rw-r--r-- | Utilities/cmlibuv/src/unix/getaddrinfo.c | 252 |
1 files changed, 252 insertions, 0 deletions
diff --git a/Utilities/cmlibuv/src/unix/getaddrinfo.c b/Utilities/cmlibuv/src/unix/getaddrinfo.c new file mode 100644 index 0000000000..77337ace94 --- /dev/null +++ b/Utilities/cmlibuv/src/unix/getaddrinfo.c @@ -0,0 +1,252 @@ +/* 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. + */ + +/* Expose glibc-specific EAI_* error codes. Needs to be defined before we + * include any headers. + */ + +#include "uv.h" +#include "internal.h" +#include "idna.h" + +#include <errno.h> +#include <stddef.h> /* NULL */ +#include <stdlib.h> +#include <string.h> +#include <net/if.h> /* if_indextoname() */ + +/* EAI_* constants. */ +#include <netdb.h> + + +int uv__getaddrinfo_translate_error(int sys_err) { + switch (sys_err) { + case 0: return 0; +#if defined(EAI_ADDRFAMILY) + case EAI_ADDRFAMILY: return UV_EAI_ADDRFAMILY; +#endif +#if defined(EAI_AGAIN) + case EAI_AGAIN: return UV_EAI_AGAIN; +#endif +#if defined(EAI_BADFLAGS) + case EAI_BADFLAGS: return UV_EAI_BADFLAGS; +#endif +#if defined(EAI_BADHINTS) + case EAI_BADHINTS: return UV_EAI_BADHINTS; +#endif +#if defined(EAI_CANCELED) + case EAI_CANCELED: return UV_EAI_CANCELED; +#endif +#if defined(EAI_FAIL) + case EAI_FAIL: return UV_EAI_FAIL; +#endif +#if defined(EAI_FAMILY) + case EAI_FAMILY: return UV_EAI_FAMILY; +#endif +#if defined(EAI_MEMORY) + case EAI_MEMORY: return UV_EAI_MEMORY; +#endif +#if defined(EAI_NODATA) + case EAI_NODATA: return UV_EAI_NODATA; +#endif +#if defined(EAI_NONAME) +# if !defined(EAI_NODATA) || EAI_NODATA != EAI_NONAME + case EAI_NONAME: return UV_EAI_NONAME; +# endif +#endif +#if defined(EAI_OVERFLOW) + case EAI_OVERFLOW: return UV_EAI_OVERFLOW; +#endif +#if defined(EAI_PROTOCOL) + case EAI_PROTOCOL: return UV_EAI_PROTOCOL; +#endif +#if defined(EAI_SERVICE) + case EAI_SERVICE: return UV_EAI_SERVICE; +#endif +#if defined(EAI_SOCKTYPE) + case EAI_SOCKTYPE: return UV_EAI_SOCKTYPE; +#endif +#if defined(EAI_SYSTEM) + case EAI_SYSTEM: return UV__ERR(errno); +#endif + } + assert(!"unknown EAI_* error code"); + abort(); +#ifndef __SUNPRO_C + return 0; /* Pacify compiler. */ +#endif +} + + +static void uv__getaddrinfo_work(struct uv__work* w) { + uv_getaddrinfo_t* req; + int err; + + req = container_of(w, uv_getaddrinfo_t, work_req); + err = getaddrinfo(req->hostname, req->service, req->hints, &req->addrinfo); + req->retcode = uv__getaddrinfo_translate_error(err); +} + + +static void uv__getaddrinfo_done(struct uv__work* w, int status) { + uv_getaddrinfo_t* req; + + req = container_of(w, uv_getaddrinfo_t, work_req); + uv__req_unregister(req->loop, req); + + /* See initialization in uv_getaddrinfo(). */ + if (req->hints) + uv__free(req->hints); + else if (req->service) + uv__free(req->service); + else if (req->hostname) + uv__free(req->hostname); + else + assert(0); + + req->hints = NULL; + req->service = NULL; + req->hostname = NULL; + + if (status == UV_ECANCELED) { + assert(req->retcode == 0); + req->retcode = UV_EAI_CANCELED; + } + + if (req->cb) + req->cb(req, req->retcode, req->addrinfo); +} + + +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; + } +} + + +void uv_freeaddrinfo(struct addrinfo* ai) { + if (ai) + freeaddrinfo(ai); +} + + +int uv_if_indextoname(unsigned int ifindex, char* buffer, size_t* size) { + char ifname_buf[UV_IF_NAMESIZE]; + size_t len; + + if (buffer == NULL || size == NULL || *size == 0) + return UV_EINVAL; + + if (if_indextoname(ifindex, ifname_buf) == NULL) + return UV__ERR(errno); + + len = strnlen(ifname_buf, sizeof(ifname_buf)); + + if (*size <= len) { + *size = len + 1; + return UV_ENOBUFS; + } + + memcpy(buffer, ifname_buf, len); + buffer[len] = '\0'; + *size = len; + + return 0; +} + +int uv_if_indextoiid(unsigned int ifindex, char* buffer, size_t* size) { + return uv_if_indextoname(ifindex, buffer, size); +} |