+++ /dev/null
-/** @file\r
- Copyright (c) 2010 - 2014, Intel Corporation. All rights reserved.<BR>\r
- This program and the accompanying materials are licensed and made available\r
- under the terms and conditions of the BSD License which accompanies this\r
- distribution. The full text of the license may be found at\r
- http://opensource.org/licenses/bsd-license.php.\r
-\r
- THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
- WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
-**/\r
-/* $NetBSD: getnameinfo.c,v 1.45 2006/10/15 16:14:46 christos Exp $ */\r
-/* $KAME: getnameinfo.c,v 1.45 2000/09/25 22:43:56 itojun Exp $ */\r
-\r
-/*\r
- * Copyright (c) 2000 Ben Harris.\r
- * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.\r
- * All rights reserved.\r
- *\r
- * Redistribution and use in source and binary forms, with or without\r
- * modification, are permitted provided that the following conditions\r
- * are met:\r
- * 1. Redistributions of source code must retain the above copyright\r
- * notice, this list of conditions and the following disclaimer.\r
- * 2. Redistributions in binary form must reproduce the above copyright\r
- * notice, this list of conditions and the following disclaimer in the\r
- * documentation and/or other materials provided with the distribution.\r
- * 3. Neither the name of the project nor the names of its contributors\r
- * may be used to endorse or promote products derived from this software\r
- * without specific prior written permission.\r
- *\r
- * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND\r
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE\r
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE\r
- * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE\r
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL\r
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS\r
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)\r
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT\r
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY\r
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF\r
- * SUCH DAMAGE.\r
- */\r
-\r
-/*\r
- * Issues to be discussed:\r
- * - Thread safe-ness must be checked\r
- * - RFC2553 says that we should raise error on short buffer. X/Open says\r
- * we need to truncate the result. We obey RFC2553 (and X/Open should be\r
- * modified). ipngwg rough consensus seems to follow RFC2553.\r
- * - What is "local" in NI_FQDN?\r
- * - NI_NAMEREQD and NI_NUMERICHOST conflict with each other.\r
- * - (KAME extension) always attach textual scopeid (fe80::1%lo0), if\r
- * sin6_scope_id is filled - standardization status?\r
- * XXX breaks backward compat for code that expects no scopeid.\r
- * beware on merge.\r
- */\r
-\r
-#define INET6 1\r
-\r
-#include <sys/cdefs.h>\r
-#if defined(LIBC_SCCS) && !defined(lint)\r
-__RCSID("$NetBSD: getnameinfo.c,v 1.45 2006/10/15 16:14:46 christos Exp $");\r
-#endif /* LIBC_SCCS and not lint */\r
-\r
-#include "namespace.h"\r
-#include <sys/types.h>\r
-#include <sys/socket.h>\r
-#include <net/if.h>\r
-#include <net/if_dl.h>\r
-//#include <net/if_ieee1394.h>\r
-//#include <net/if_types.h>\r
-#include <netinet/in.h>\r
-#include <arpa/inet.h>\r
-#include <arpa/nameser.h>\r
-#include <assert.h>\r
-#include <limits.h>\r
-#include <netdb.h>\r
-#include <resolv.h>\r
-#include <stddef.h>\r
-#include <string.h>\r
-\r
-#include <net/servent.h>\r
-\r
-#define CLLADDR(x) ( LLADDR(x) )\r
-#define endservent_r(svd) endservent()\r
-#define getservbyport_r(Port,pProto,pSv,pSvd) getservbyport(Port,pProto)\r
-\r
-#ifdef __weak_alias\r
-__weak_alias(getnameinfo,_getnameinfo)\r
-#endif\r
-\r
-static\r
-int\r
-hexname(\r
- const u_int8_t * cp,\r
- size_t len,\r
- char * host,\r
- socklen_t hostlen\r
- );\r
-\r
-static const struct afd {\r
- int a_af;\r
- socklen_t a_addrlen;\r
- socklen_t a_socklen;\r
- int a_off;\r
-} afdl [] = {\r
-#ifdef INET6\r
- {PF_INET6, sizeof(struct in6_addr), sizeof(struct sockaddr_in6),\r
- offsetof(struct sockaddr_in6, sin6_addr)},\r
-#endif\r
- {PF_INET, sizeof(struct in_addr), sizeof(struct sockaddr_in),\r
- offsetof(struct sockaddr_in, sin_addr)},\r
- {0, 0, 0, 0},\r
-};\r
-\r
-struct sockinet {\r
- u_char si_len;\r
- u_char si_family;\r
- u_short si_port;\r
-};\r
-\r
-static int getnameinfo_inet __P((const struct sockaddr *, socklen_t, char *,\r
- socklen_t, char *, socklen_t, int));\r
-#ifdef INET6\r
-static int ip6_parsenumeric __P((const struct sockaddr *, const char *, char *,\r
- socklen_t, int));\r
-static int ip6_sa2str __P((const struct sockaddr_in6 *, char *, size_t,\r
- int));\r
-#endif\r
-static int getnameinfo_link __P((const struct sockaddr *, socklen_t, char *,\r
- socklen_t, char *, socklen_t, int));\r
-static int hexname __P((const u_int8_t *, size_t, char *, socklen_t));\r
-\r
-/*\r
- * Top-level getnameinfo() code. Look at the address family, and pick an\r
- * appropriate function to call.\r
- */\r
-int\r
-getnameinfo(\r
- const struct sockaddr * sa,\r
- socklen_t salen,\r
- char * host,\r
- socklen_t hostlen,\r
- char * serv,\r
- socklen_t servlen,\r
- int flags\r
- )\r
-{\r
-\r
- switch (sa->sa_family) {\r
- case AF_INET:\r
- case AF_INET6:\r
- return getnameinfo_inet(sa, salen, host, hostlen,\r
- serv, servlen, flags);\r
- case AF_LINK:\r
- return getnameinfo_link(sa, salen, host, hostlen,\r
- serv, servlen, flags);\r
- default:\r
- return EAI_FAMILY;\r
- }\r
-}\r
-\r
-\r
-/*\r
- * getnameinfo_inet():\r
- * Format an IPv4 or IPv6 sockaddr into a printable string.\r
- */\r
-static\r
-int\r
-getnameinfo_inet(\r
- const struct sockaddr * sa,\r
- socklen_t salen,\r
- char * host,\r
- socklen_t hostlen,\r
- char * serv,\r
- socklen_t servlen,\r
- int flags\r
- )\r
-{\r
- const struct afd *afd;\r
- struct servent *sp;\r
- struct hostent *hp;\r
- u_short port;\r
- int family, i;\r
- const char *addr;\r
- u_int32_t v4a;\r
- char numserv[512];\r
- char numaddr[512];\r
-\r
- /* sa is checked below */\r
- /* host may be NULL */\r
- /* serv may be NULL */\r
-\r
- if (sa == NULL)\r
- return EAI_FAIL;\r
-\r
-#ifdef BSD4_4\r
- if (sa->sa_len != salen)\r
- return EAI_FAIL;\r
-#endif\r
-\r
- family = sa->sa_family;\r
- for (i = 0; afdl[i].a_af; i++)\r
- if (afdl[i].a_af == family) {\r
- afd = &afdl[i];\r
- goto found;\r
- }\r
- return EAI_FAMILY;\r
-\r
- found:\r
- if (salen != afd->a_socklen)\r
- return EAI_FAIL;\r
-\r
- /* network byte order */\r
- port = ((const struct sockinet *)(const void *)sa)->si_port;\r
- addr = (const char *)(const void *)sa + afd->a_off;\r
-\r
- if (serv == NULL || servlen == 0) {\r
- /*\r
- * do nothing in this case.\r
- * in case you are wondering if "&&" is more correct than\r
- * "||" here: rfc2553bis-03 says that serv == NULL OR\r
- * servlen == 0 means that the caller does not want the result.\r
- */\r
- } else {\r
- if (flags & NI_NUMERICSERV)\r
- sp = NULL;\r
- else {\r
- struct servent_data svd;\r
-// struct servent sv;\r
-\r
- (void)memset(&svd, 0, sizeof(svd));\r
- sp = getservbyport_r(port,\r
- (flags & NI_DGRAM) ? "udp" : "tcp", &sv, &svd);\r
- endservent_r(&svd);\r
- }\r
- if (sp) {\r
- if (strlen(sp->s_name) + 1 > servlen)\r
- return EAI_MEMORY;\r
- strlcpy(serv, sp->s_name, servlen);\r
- } else {\r
- snprintf(numserv, sizeof(numserv), "%u", ntohs(port));\r
- if (strlen(numserv) + 1 > servlen)\r
- return EAI_MEMORY;\r
- strlcpy(serv, numserv, servlen);\r
- }\r
- }\r
-\r
- switch (sa->sa_family) {\r
- case AF_INET:\r
- v4a = (u_int32_t)\r
- ntohl(((const struct sockaddr_in *)\r
- (const void *)sa)->sin_addr.s_addr);\r
- if (IN_MULTICAST(v4a) || IN_EXPERIMENTAL(v4a))\r
- flags |= NI_NUMERICHOST;\r
- v4a >>= IN_CLASSA_NSHIFT;\r
- if (v4a == 0)\r
- flags |= NI_NUMERICHOST;\r
- break;\r
-#ifdef INET6\r
- case AF_INET6:\r
- {\r
- const struct sockaddr_in6 *sin6;\r
- sin6 = (const struct sockaddr_in6 *)(const void *)sa;\r
- switch (sin6->sin6_addr.s6_addr[0]) {\r
- case 0x00:\r
- if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr))\r
- ;\r
- else if (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr))\r
- ;\r
- else\r
- flags |= NI_NUMERICHOST;\r
- break;\r
- default:\r
- if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {\r
- flags |= NI_NUMERICHOST;\r
- }\r
- else if (IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr))\r
- flags |= NI_NUMERICHOST;\r
- break;\r
- }\r
- }\r
- break;\r
-#endif\r
- }\r
- if (host == NULL || hostlen == 0) {\r
- /*\r
- * do nothing in this case.\r
- * in case you are wondering if "&&" is more correct than\r
- * "||" here: rfc2553bis-03 says that host == NULL or\r
- * hostlen == 0 means that the caller does not want the result.\r
- */\r
- } else if (flags & NI_NUMERICHOST) {\r
- size_t numaddrlen;\r
-\r
- /* NUMERICHOST and NAMEREQD conflicts with each other */\r
- if (flags & NI_NAMEREQD)\r
- return EAI_NONAME;\r
-\r
- switch(afd->a_af) {\r
-#ifdef INET6\r
- case AF_INET6:\r
- {\r
- int error;\r
-\r
- if ((error = ip6_parsenumeric(sa, addr, host,\r
- hostlen, flags)) != 0)\r
- return(error);\r
- break;\r
- }\r
-#endif\r
- default:\r
- if (inet_ntop(afd->a_af, addr, numaddr, sizeof(numaddr))\r
- == NULL)\r
- return EAI_SYSTEM;\r
- numaddrlen = strlen(numaddr);\r
- if (numaddrlen + 1 > hostlen) /* don't forget terminator */\r
- return EAI_MEMORY;\r
- strlcpy(host, numaddr, hostlen);\r
- break;\r
- }\r
- } else {\r
- hp = gethostbyaddr(addr, afd->a_addrlen, afd->a_af);\r
-\r
- if (hp) {\r
-#if 0\r
- /*\r
- * commented out, since "for local host" is not\r
- * implemented here - see RFC2553 p30\r
- */\r
- if (flags & NI_NOFQDN) {\r
- char *p;\r
- p = strchr(hp->h_name, '.');\r
- if (p)\r
- *p = '\0';\r
- }\r
-#endif\r
- if (strlen(hp->h_name) + 1 > hostlen) {\r
- return EAI_MEMORY;\r
- }\r
- strlcpy(host, hp->h_name, hostlen);\r
- } else {\r
- if (flags & NI_NAMEREQD)\r
- return EAI_NONAME;\r
- switch(afd->a_af) {\r
-#ifdef INET6\r
- case AF_INET6:\r
- {\r
- int error;\r
-\r
- if ((error = ip6_parsenumeric(sa, addr, host,\r
- hostlen,\r
- flags)) != 0)\r
- return(error);\r
- break;\r
- }\r
-#endif\r
- default:\r
- if (inet_ntop(afd->a_af, addr, host,\r
- hostlen) == NULL)\r
- return EAI_SYSTEM;\r
- break;\r
- }\r
- }\r
- }\r
- return(0);\r
-}\r
-\r
-#ifdef INET6\r
-static int\r
-ip6_parsenumeric(\r
- const struct sockaddr *sa,\r
- const char *addr,\r
- char *host,\r
- socklen_t hostlen,\r
- int flags\r
- )\r
-{\r
- size_t numaddrlen;\r
- char numaddr[512];\r
-\r
- _DIAGASSERT(sa != NULL);\r
- _DIAGASSERT(addr != NULL);\r
- _DIAGASSERT(host != NULL);\r
-\r
- if (inet_ntop(AF_INET6, addr, numaddr, sizeof(numaddr)) == NULL)\r
- return EAI_SYSTEM;\r
-\r
- numaddrlen = strlen(numaddr);\r
- if (numaddrlen + 1 > hostlen) /* don't forget terminator */\r
- return EAI_OVERFLOW;\r
- strlcpy(host, numaddr, hostlen);\r
-\r
- if (((const struct sockaddr_in6 *)(const void *)sa)->sin6_scope_id) {\r
- char zonebuf[MAXHOSTNAMELEN];\r
- int zonelen;\r
-\r
- zonelen = ip6_sa2str(\r
- (const struct sockaddr_in6 *)(const void *)sa,\r
- zonebuf, sizeof(zonebuf), flags);\r
- if (zonelen < 0)\r
- return EAI_OVERFLOW;\r
- if ((size_t) zonelen + 1 + numaddrlen + 1 > hostlen)\r
- return EAI_OVERFLOW;\r
- /* construct <numeric-addr><delim><zoneid> */\r
- memcpy(host + numaddrlen + 1, zonebuf,\r
- (size_t)zonelen);\r
- host[numaddrlen] = SCOPE_DELIMITER;\r
- host[numaddrlen + 1 + zonelen] = '\0';\r
- }\r
-\r
- return 0;\r
-}\r
-\r
-/* ARGSUSED */\r
-static int\r
-ip6_sa2str(\r
- const struct sockaddr_in6 *sa6,\r
- char *buf,\r
- size_t bufsiz,\r
- int flags\r
- )\r
-{\r
-#if 0\r
- unsigned int ifindex;\r
- const struct in6_addr *a6;\r
-#endif\r
- int n;\r
-\r
- _DIAGASSERT(sa6 != NULL);\r
- _DIAGASSERT(buf != NULL);\r
-\r
-#if 0\r
- ifindex = (unsigned int)sa6->sin6_scope_id;\r
- a6 = &sa6->sin6_addr;\r
-#endif\r
-\r
-#ifdef NI_NUMERICSCOPE\r
- if ((flags & NI_NUMERICSCOPE) != 0) {\r
- n = snprintf(buf, bufsiz, "%u", sa6->sin6_scope_id);\r
- if ((n < 0) || ((size_t)n >= bufsiz))\r
- return -1;\r
- else\r
- return n;\r
- }\r
-#endif\r
-\r
-#if 0\r
- /* if_indextoname() does not take buffer size. not a good api... */\r
- if ((IN6_IS_ADDR_LINKLOCAL(a6) || IN6_IS_ADDR_MC_LINKLOCAL(a6)) &&\r
- bufsiz >= IF_NAMESIZE) {\r
- char *p = if_indextoname(ifindex, buf);\r
- if (p) {\r
- return(strlen(p));\r
- }\r
- }\r
-#endif // 0\r
-\r
- /* last resort */\r
- n = snprintf(buf, bufsiz, "%u", sa6->sin6_scope_id);\r
- if (n < 0 || (size_t) n >= bufsiz)\r
- return -1;\r
- else\r
- return n;\r
-}\r
-#endif /* INET6 */\r
-\r
-\r
-/*\r
- * getnameinfo_link():\r
- * Format a link-layer address into a printable format, paying attention to\r
- * the interface type.\r
- */\r
-/* ARGSUSED */\r
-static\r
-int\r
-getnameinfo_link (\r
- const struct sockaddr * sa,\r
- socklen_t salen,\r
- char * host,\r
- socklen_t hostlen,\r
- char * serv,\r
- socklen_t servlen,\r
- int flags\r
- )\r
-{\r
- const struct sockaddr_dl *sdl =\r
- (const struct sockaddr_dl *)(const void *)sa;\r
-// const struct ieee1394_hwaddr *iha;\r
- int n;\r
-\r
- if (serv != NULL && servlen > 0)\r
- *serv = '\0';\r
-\r
- if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 && sdl->sdl_slen == 0) {\r
- n = snprintf(host, hostlen, "link#%u", sdl->sdl_index);\r
- if (n < 0 || (socklen_t) n > hostlen) {\r
- *host = '\0';\r
- return EAI_MEMORY;\r
- }\r
- return 0;\r
- }\r
-\r
-#if 0\r
- switch (sdl->sdl_type) {\r
-#ifdef IFT_ECONET\r
- case IFT_ECONET:\r
- if (sdl->sdl_alen < 2)\r
- return EAI_FAMILY;\r
- if (CLLADDR(sdl)[1] == 0)\r
- n = snprintf(host, hostlen, "%u", CLLADDR(sdl)[0]);\r
- else\r
- n = snprintf(host, hostlen, "%u.%u",\r
- CLLADDR(sdl)[1], CLLADDR(sdl)[0]);\r
- if (n < 0 || (socklen_t) n >= hostlen) {\r
- *host = '\0';\r
- return EAI_MEMORY;\r
- } else\r
- return 0;\r
-#endif\r
- case IFT_IEEE1394:\r
- if (sdl->sdl_alen < sizeof(iha->iha_uid))\r
- return EAI_FAMILY;\r
- iha =\r
- (const struct ieee1394_hwaddr *)(const void *)CLLADDR(sdl);\r
- return hexname(iha->iha_uid, sizeof(iha->iha_uid),\r
- host, hostlen);\r
- /*\r
- * The following have zero-length addresses.\r
- * IFT_ATM (net/if_atmsubr.c)\r
- * IFT_FAITH (net/if_faith.c)\r
- * IFT_GIF (net/if_gif.c)\r
- * IFT_LOOP (net/if_loop.c)\r
- * IFT_PPP (net/if_ppp.c, net/if_spppsubr.c)\r
- * IFT_SLIP (net/if_sl.c, net/if_strip.c)\r
- * IFT_STF (net/if_stf.c)\r
- * IFT_L2VLAN (net/if_vlan.c)\r
- * IFT_PROPVIRTUAL (net/if_bridge.h>\r
- */\r
- /*\r
- * The following use IPv4 addresses as link-layer addresses:\r
- * IFT_OTHER (net/if_gre.c)\r
- */\r
- case IFT_ARCNET: /* default below is believed correct for all these. */\r
- case IFT_ETHER:\r
- case IFT_FDDI:\r
- case IFT_HIPPI:\r
- case IFT_ISO88025:\r
- default:\r
-#endif // 0\r
- return hexname((const u_int8_t *)CLLADDR(sdl),\r
- (size_t)sdl->sdl_alen, host, hostlen);\r
-// }\r
-}\r
-\r
-static\r
-int\r
-hexname(\r
- const u_int8_t * cp,\r
- size_t len,\r
- char * host,\r
- socklen_t hostlen\r
- )\r
-{\r
- int n;\r
- size_t i;\r
- char *outp = host;\r
-\r
- *outp = '\0';\r
- for (i = 0; i < len; i++) {\r
- n = snprintf(outp, hostlen, "%s%02x",\r
- i ? ":" : "", cp[i]);\r
- if (n < 0 || (socklen_t) n >= hostlen) {\r
- *host = '\0';\r
- return EAI_MEMORY;\r
- }\r
- outp += n;\r
- hostlen -= n;\r
- }\r
- return 0;\r
-}\r
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