diff options
Diffstat (limited to 'newlib/libc/sys/linux/net/getnameinfo.c')
| -rw-r--r-- | newlib/libc/sys/linux/net/getnameinfo.c | 372 |
1 files changed, 0 insertions, 372 deletions
diff --git a/newlib/libc/sys/linux/net/getnameinfo.c b/newlib/libc/sys/linux/net/getnameinfo.c deleted file mode 100644 index e2f9631c1..000000000 --- a/newlib/libc/sys/linux/net/getnameinfo.c +++ /dev/null @@ -1,372 +0,0 @@ -/* $KAME: getnameinfo.c,v 1.45 2000/09/25 22:43:56 itojun Exp $ */ - -/* - * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the project nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -/* - * Issues to be discussed: - * - Thread safe-ness must be checked - * - RFC2553 says that we should raise error on short buffer. X/Open says - * we need to truncate the result. We obey RFC2553 (and X/Open should be - * modified). ipngwg rough consensus seems to follow RFC2553. - * - What is "local" in NI_FQDN? - * - NI_NAMEREQD and NI_NUMERICHOST conflict with each other. - * - (KAME extension) NI_WITHSCOPEID when called with global address, - * and sin6_scope_id filled - */ - -#include <sys/cdefs.h> -#include <sys/types.h> -#include <machine/endian.h> - -#include <sys/types.h> -#include <sys/socket.h> -#include <net/if.h> -#include <netinet/in.h> -#include <arpa/inet.h> -#include <arpa/nameser.h> -#include <netdb.h> -#include <resolv.h> -#include <string.h> -#include <stddef.h> -#include <errno.h> - -#define SUCCESS 0 -#define ANY 0 -#define YES 1 -#define NO 0 - -static struct afd { - int a_af; - int a_addrlen; - int a_socklen; - int a_off; -} afdl [] = { -#ifdef INET6 - {PF_INET6, sizeof(struct in6_addr), sizeof(struct sockaddr_in6), - offsetof(struct sockaddr_in6, sin6_addr)}, -#endif - {PF_INET, sizeof(struct in_addr), sizeof(struct sockaddr_in), - offsetof(struct sockaddr_in, sin_addr)}, - {0, 0, 0}, -}; - -struct sockinet { - u_char si_len; - u_char si_family; - u_short si_port; -}; - -#ifdef INET6 -static int ip6_parsenumeric(const struct sockaddr *, const char *, char *, - size_t, int); -static int ip6_sa2str(const struct sockaddr_in6 *, char *, size_t, int); -#endif - -/* 2553bis: use EAI_xx for getnameinfo */ -#define ENI_NOSOCKET EAI_FAIL /*XXX*/ -#define ENI_NOSERVNAME EAI_NONAME -#define ENI_NOHOSTNAME EAI_NONAME -#define ENI_MEMORY EAI_MEMORY -#define ENI_SYSTEM EAI_SYSTEM -#define ENI_FAMILY EAI_FAMILY -#define ENI_SALEN EAI_FAMILY - -int -getnameinfo(sa, salen, host, hostlen, serv, servlen, flags) - const struct sockaddr *sa; - socklen_t salen; - char *host; - size_t hostlen; - char *serv; - size_t servlen; - int flags; -{ - struct afd *afd; - struct servent *sp; - struct hostent *hp; - u_short port; - int family, i; - const char *addr; - u_int32_t v4a; - int h_error; - char numserv[512]; - char numaddr[512]; - - if (sa == NULL) - return ENI_NOSOCKET; - - family = sa->sa_family; - for (i = 0; afdl[i].a_af; i++) - if (afdl[i].a_af == family) { - afd = &afdl[i]; - goto found; - } - return ENI_FAMILY; - - found: - if (salen != afd->a_socklen) - return ENI_SALEN; - - /* network byte order */ - port = ((const struct sockinet *)sa)->si_port; - addr = (const char *)sa + afd->a_off; - - if (serv == NULL || servlen == 0) { - /* - * do nothing in this case. - * in case you are wondering if "&&" is more correct than - * "||" here: RFC2553 says that serv == NULL OR servlen == 0 - * means that the caller does not want the result. - */ - } else { - if (flags & NI_NUMERICSERV) - sp = NULL; - else { - sp = getservbyport(port, - (flags & NI_DGRAM) ? "udp" : "tcp"); - } - if (sp) { - if (strlen(sp->s_name) + 1 > servlen) - return ENI_MEMORY; - strcpy(serv, sp->s_name); - } else { - snprintf(numserv, sizeof(numserv), "%d", ntohs(port)); - if (strlen(numserv) + 1 > servlen) - return ENI_MEMORY; - strcpy(serv, numserv); - } - } - - switch (sa->sa_family) { - case AF_INET: - v4a = (u_int32_t) - ntohl(((const struct sockaddr_in *)sa)->sin_addr.s_addr); - if (IN_MULTICAST(v4a) || IN_EXPERIMENTAL(v4a)) - flags |= NI_NUMERICHOST; - v4a >>= IN_CLASSA_NSHIFT; - if (v4a == 0) - flags |= NI_NUMERICHOST; - break; -#ifdef INET6 - case AF_INET6: - { - const struct sockaddr_in6 *sin6; - sin6 = (const struct sockaddr_in6 *)sa; - switch (sin6->sin6_addr.s6_addr[0]) { - case 0x00: - if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) - ; - else if (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr)) - ; - else - flags |= NI_NUMERICHOST; - break; - default: - if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) { - flags |= NI_NUMERICHOST; - } - else if (IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) - flags |= NI_NUMERICHOST; - break; - } - } - break; -#endif - } - if (host == NULL || hostlen == 0) { - /* - * do nothing in this case. - * in case you are wondering if "&&" is more correct than - * "||" here: RFC2553 says that host == NULL OR hostlen == 0 - * means that the caller does not want the result. - */ - } else if (flags & NI_NUMERICHOST) { - int numaddrlen; - - /* NUMERICHOST and NAMEREQD conflicts with each other */ - if (flags & NI_NAMEREQD) - return ENI_NOHOSTNAME; - - switch(afd->a_af) { -#ifdef INET6 - case AF_INET6: - { - int error; - - if ((error = ip6_parsenumeric(sa, addr, host, - hostlen, flags)) != 0) - return(error); - break; - } -#endif - default: - if (inet_ntop(afd->a_af, addr, numaddr, sizeof(numaddr)) - == NULL) - return ENI_SYSTEM; - numaddrlen = strlen(numaddr); - if (numaddrlen + 1 > hostlen) /* don't forget terminator */ - return ENI_MEMORY; - strcpy(host, numaddr); - break; - } - } else { - hp = getipnodebyaddr(addr, afd->a_addrlen, afd->a_af, &h_error); - - if (hp) { -#if 0 - /* - * commented out, since "for local host" is not - * implemented here - see RFC2553 p30 - */ - if (flags & NI_NOFQDN) { - char *p; - p = strchr(hp->h_name, '.'); - if (p) - *p = '\0'; - } -#endif - if (strlen(hp->h_name) + 1 > hostlen) { - freehostent(hp); - return ENI_MEMORY; - } - strcpy(host, hp->h_name); - freehostent(hp); - } else { - if (flags & NI_NAMEREQD) - return ENI_NOHOSTNAME; - switch(afd->a_af) { -#ifdef INET6 - case AF_INET6: - { - int error; - - if ((error = ip6_parsenumeric(sa, addr, host, - hostlen, - flags)) != 0) - return(error); - break; - } -#endif - default: - if (inet_ntop(afd->a_af, addr, host, - hostlen) == NULL) - return ENI_SYSTEM; - break; - } - } - } - return SUCCESS; -} - -#ifdef INET6 -static int -ip6_parsenumeric(sa, addr, host, hostlen, flags) - const struct sockaddr *sa; - const char *addr; - char *host; - size_t hostlen; - int flags; -{ - int numaddrlen; - char numaddr[512]; - - if (inet_ntop(AF_INET6, addr, numaddr, sizeof(numaddr)) - == NULL) - return ENI_SYSTEM; - - numaddrlen = strlen(numaddr); - if (numaddrlen + 1 > hostlen) /* don't forget terminator */ - return ENI_MEMORY; - strcpy(host, numaddr); - -#ifdef NI_WITHSCOPEID - if ( -#ifdef DONT_OPAQUE_SCOPEID - (IN6_IS_ADDR_LINKLOCAL((struct in6_addr *)addr) || - IN6_IS_ADDR_MULTICAST((struct in6_addr *)addr)) && -#endif - ((const struct sockaddr_in6 *)sa)->sin6_scope_id) { -#ifndef ALWAYS_WITHSCOPE - if (flags & NI_WITHSCOPEID) -#endif /* !ALWAYS_WITHSCOPE */ - { - char scopebuf[MAXHOSTNAMELEN]; - int scopelen; - - /* ip6_sa2str never fails */ - scopelen = ip6_sa2str((const struct sockaddr_in6 *)sa, - scopebuf, sizeof(scopebuf), - flags); - if (scopelen + 1 + numaddrlen + 1 > hostlen) - return ENI_MEMORY; - /* - * construct <numeric-addr><delim><scopeid> - */ - memcpy(host + numaddrlen + 1, scopebuf, - scopelen); - host[numaddrlen] = SCOPE_DELIMITER; - host[numaddrlen + 1 + scopelen] = '\0'; - } - } -#endif /* NI_WITHSCOPEID */ - - return 0; -} - -/* ARGSUSED */ -static int -ip6_sa2str(sa6, buf, bufsiz, flags) - const struct sockaddr_in6 *sa6; - char *buf; - size_t bufsiz; - int flags; -{ - unsigned int ifindex = (unsigned int)sa6->sin6_scope_id; - const struct in6_addr *a6 = &sa6->sin6_addr; - -#ifdef NI_NUMERICSCOPE - if (flags & NI_NUMERICSCOPE) { - return(snprintf(buf, bufsiz, "%d", sa6->sin6_scope_id)); - } -#endif - - /* if_indextoname() does not take buffer size. not a good api... */ - if ((IN6_IS_ADDR_LINKLOCAL(a6) || IN6_IS_ADDR_MC_LINKLOCAL(a6)) && - bufsiz >= IF_NAMESIZE) { - char *p = if_indextoname(ifindex, buf); - if (p) { - return(strlen(p)); - } - } - - /* last resort */ - return(snprintf(buf, bufsiz, "%u", sa6->sin6_scope_id)); -} -#endif /* INET6 */ |