f14fb60209
* Updating common/lib * Updating lib/csu * Updating lib/libc * Updating libexec/ld.elf_so * Corrected test on __minix in featuretest to actually follow the meaning of the comment. * Cleaned up _REENTRANT-related defintions. * Disabled -D_REENTRANT for libfetch * Removing some unneeded __NBSD_LIBC defines and tests Change-Id: Ic1394baef74d11b9f86b312f5ff4bbc3cbf72ce2
262 lines
6.3 KiB
C
262 lines
6.3 KiB
C
/* $NetBSD: sockaddr_snprintf.c,v 1.9 2008/04/28 20:23:03 martin Exp $ */
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/*-
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* Copyright (c) 2004 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Christos Zoulas.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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__RCSID("$NetBSD: sockaddr_snprintf.c,v 1.9 2008/04/28 20:23:03 martin Exp $");
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#endif /* LIBC_SCCS and not lint */
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#include <netinet/in.h>
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#ifndef __minix
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#include <netatalk/at.h>
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#include <net/if_dl.h>
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#endif
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include <util.h>
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#include <netdb.h>
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int
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sockaddr_snprintf(char * const sbuf, const size_t len, const char * const fmt,
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const struct sockaddr * const sa)
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{
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const void *a = NULL;
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#ifndef __minix
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char abuf[1024], nbuf[1024], *addr = NULL, *w = NULL;
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#else
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char abuf[1024], nbuf[1024], *addr = NULL;
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#endif
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char Abuf[1024], pbuf[32], *name = NULL, *port = NULL;
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char *ebuf = &sbuf[len - 1], *buf = sbuf;
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const char *ptr, *s;
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int p = -1;
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#ifndef __minix
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const struct sockaddr_at *sat = NULL;
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#endif
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const struct sockaddr_in *sin4 = NULL;
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#ifndef __minix
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const struct sockaddr_in6 *sin6 = NULL;
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const struct sockaddr_un *sun = NULL;
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const struct sockaddr_dl *sdl = NULL;
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#endif
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int na = 1;
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#define ADDC(c) do { if (buf < ebuf) *buf++ = c; else buf++; } \
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while (/*CONSTCOND*/0)
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#define ADDS(p) do { for (s = p; *s; s++) ADDC(*s); } \
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while (/*CONSTCOND*/0)
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#define ADDNA() do { if (na) ADDS("N/A"); } \
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while (/*CONSTCOND*/0)
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switch (sa->sa_family) {
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case AF_UNSPEC:
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goto done;
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#ifndef __minix
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case AF_APPLETALK:
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sat = ((const struct sockaddr_at *)(const void *)sa);
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p = ntohs(sat->sat_port);
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(void)snprintf(addr = abuf, sizeof(abuf), "%u.%u",
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ntohs(sat->sat_addr.s_net), sat->sat_addr.s_node);
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(void)snprintf(port = pbuf, sizeof(pbuf), "%d", p);
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break;
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case AF_LOCAL:
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sun = ((const struct sockaddr_un *)(const void *)sa);
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(void)strlcpy(addr = abuf, sun->sun_path, SUN_LEN(sun));
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break;
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#endif
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case AF_INET:
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sin4 = ((const struct sockaddr_in *)(const void *)sa);
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p = ntohs(sin4->sin_port);
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a = &sin4->sin_addr;
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break;
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#ifndef __minix
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case AF_INET6:
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sin6 = ((const struct sockaddr_in6 *)(const void *)sa);
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p = ntohs(sin6->sin6_port);
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a = &sin6->sin6_addr;
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break;
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case AF_LINK:
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sdl = ((const struct sockaddr_dl *)(const void *)sa);
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(void)strlcpy(addr = abuf, link_ntoa(sdl), sizeof(abuf));
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if ((w = strchr(addr, ':')) != 0) {
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*w++ = '\0';
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addr = w;
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}
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break;
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#endif
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default:
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errno = EAFNOSUPPORT;
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return -1;
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}
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if (addr == abuf)
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name = addr;
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#ifndef __minix
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if (a && getnameinfo(sa, (socklen_t)sa->sa_len, addr = abuf,
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#else
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if (a && getnameinfo(sa, (socklen_t)len, addr = abuf,
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#endif
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(unsigned int)sizeof(abuf), NULL, 0,
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NI_NUMERICHOST|NI_NUMERICSERV) != 0)
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return -1;
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for (ptr = fmt; *ptr; ptr++) {
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if (*ptr != '%') {
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ADDC(*ptr);
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continue;
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}
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next_char:
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switch (*++ptr) {
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case '?':
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na = 0;
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goto next_char;
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case 'a':
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ADDS(addr);
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break;
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case 'p':
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if (p != -1) {
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(void)snprintf(nbuf, sizeof(nbuf), "%d", p);
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ADDS(nbuf);
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} else
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ADDNA();
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break;
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case 'f':
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(void)snprintf(nbuf, sizeof(nbuf), "%d", sa->sa_family);
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ADDS(nbuf);
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break;
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case 'l':
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#ifndef __minix
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(void)snprintf(nbuf, sizeof(nbuf), "%d", sa->sa_len);
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#else
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(void)snprintf(nbuf, sizeof(nbuf), "%d", len);
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#endif
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ADDS(nbuf);
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break;
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case 'A':
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if (name)
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ADDS(name);
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else if (!a)
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ADDNA();
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else {
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#ifndef __minix
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getnameinfo(sa, (socklen_t)sa->sa_len,
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#else
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getnameinfo(sa, (socklen_t)len,
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#endif
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name = Abuf,
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(unsigned int)sizeof(nbuf), NULL, 0, 0);
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ADDS(name);
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}
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break;
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case 'P':
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if (port)
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ADDS(port);
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else if (p == -1)
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ADDNA();
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else {
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#ifndef __minix
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getnameinfo(sa, (socklen_t)sa->sa_len, NULL, 0,
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#else
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getnameinfo(sa, (socklen_t)len, NULL, 0,
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#endif
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port = pbuf,
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(unsigned int)sizeof(pbuf), 0);
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ADDS(port);
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}
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break;
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#ifndef __minix
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case 'I':
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if (sdl && addr != abuf) {
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ADDS(abuf);
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} else {
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ADDNA();
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}
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break;
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case 'F':
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if (sin6) {
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(void)snprintf(nbuf, sizeof(nbuf), "%d",
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sin6->sin6_flowinfo);
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ADDS(nbuf);
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break;
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} else {
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ADDNA();
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}
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break;
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case 'S':
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if (sin6) {
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(void)snprintf(nbuf, sizeof(nbuf), "%d",
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sin6->sin6_scope_id);
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ADDS(nbuf);
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break;
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} else {
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ADDNA();
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}
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break;
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case 'R':
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if (sat) {
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const struct netrange *n =
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&sat->sat_range.r_netrange;
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(void)snprintf(nbuf, sizeof(nbuf),
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"%d:[%d,%d]", n->nr_phase , n->nr_firstnet,
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n->nr_lastnet);
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ADDS(nbuf);
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} else {
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ADDNA();
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}
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break;
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#endif
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default:
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ADDC('%');
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if (na == 0)
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ADDC('?');
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if (*ptr == '\0')
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goto done;
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/*FALLTHROUGH*/
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case '%':
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ADDC(*ptr);
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break;
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}
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na = 1;
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}
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done:
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if (buf < ebuf)
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*buf = '\0';
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else if (len != 0)
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sbuf[len - 1] = '\0';
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return (int)(buf - sbuf);
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}
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