glibc/inet/getnameinfo.c

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update from main archive 970218 1997-02-19 03:28 Miles Bader <miles@gnu.ai.mit.edu> * argp/argp-help.c: Add support for user provided filter of help messages. * argp/argp-parse.c: Likewise. * argp/argp.h: Likewise. * argp/argp-namefrob.h: Define __argp_input. * argp/argp-test.c: Add example for filter. 1997-02-19 02:58 Ulrich Drepper <drepper@cygnus.com> * argp.h: New file. * locale/programs/locale.c: Switch to use argp. * errno.h: Make it possible to get definition of error_t even after having errno.h already. * elf/dl-hash.h: New file. ELF hashing function. Extracted from dl-lookup.c. * elf/dl-lookup.c (_dl_elf_hash): Remove definition. * elf/dl-load.c: Rename _dl_does_name_match_p to _dl_name_match_p. * elf/dl-version.c: Likewise. * elf/dl-lookup.c: Implement new versioning lookup scheme. * elf/dl-version.c (_dl_check_map_versions): Initialize new field in l_versions member. * elf/dlvsym.c: Correct call of _dl_lookup_versioned_symbol_skip and _dl_lookup_versioned_symbol. * elf/link.h: Rename hash_name_pair to struct r_found_version. * sysdeps/alpha/dl-machine.h: Likewise. * sysdeps/i386/dl-machine.h: Likewise. * sysdeps/m68k/dl-machine.h: Likewise. * sysdeps/mips/dl-machine.h: Likewise. * intl/l10nflist.c: (_nl_make_l10nflist): Fix bug in computation of length of abs_filename. * locale/Makefile (CPPFLAGS): Define LOCALE_ALIAS_PATH. * locale/programs/ld-monetary.c (monetary_add): Allow value 0 in mon_grouping information. This means no more grouping. * locale/programs/ld-numeric.c (numeric_add): Write value \377 when seein value 0 in grouping information. * locale/programs/linereader.c (lr_close): Don't free fname since it might be used in error messages. * locale/programs/locale.c: Check whether output of `locale -a' really is locale directory. Also print locale aliases. * misc/search.h (__action_fn_t): Parameters VALUE and LEVEL cannot be const. 1997-02-19 02:16 Ulrich Drepper <drepper@cygnus.com> * sysdeps/unix/bsd/sun/sunos4/resourcebits.h: Correct #defin to #define. Reported by Rick Flower <FLOWER@sdvax2.sdd.TRW.COM>. 1997-02-19 01:37 Erik Troan <ewt@redhat.com> * shadow/sgetspent_r.c: Accept empty third, fourth and fifth fields. 1997-02-19 01:02 Ulrich Drepper <drepper@cygnus.com> * sysdeps/unix/mman/syscalls.list: msync takes 3 arguments. Reported by Andreas Jaeger <aj@arthur.pfalz.de>. * sysdeps/stub/msync.c (msync): Add missing third parameter. 1997-02-19 00:29 Ulrich Drepper <drepper@cygnus.com> * sysdeps/unix/bsd/sigsuspend.c: Call __sigpause with needed additional argument. 1997-02-18 22:13 Ulrich Drepper <drepper@cygnus.com> * inet/net/ethernet.h: New file. * sysdeps/unix/sysv/linux/netinet/if_ether.c: Add BSD compatibility. * sysdeps/unix/sysv/linux/net/if_slip.h: New file. Contributed by a sun <asun@zoology.washington.edu>. * sysdeps/unix/sysv/linux/net/if_arp.h: Include <sys/socket.h>. * sunrpc/rpc/rpc_msg.h: Include <rpc/clnt.h>. Reported by a sun <asun@zoology.washington.edu>. 1997-02-16 14:25 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * Makerules ((common-objpfx)distinfo-$(subdir)): Depend on sysdep makefiles which may change the distinfo variables. 1997-02-16 14:03 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/unix/sysv/linux/Makefile (sysdep_headers) [$(subdir)=misc]: Add sys/quota.h. (sysdep_headers) [$(subdir)=inet]: Add netinet/udp.h. 1997-02-17 13:12 aleph1@dfw.net * sunrpc/clnt_simp.c (callrpc): Prevent buffer overflow by using strncpy. 1997-02-18 03:28 Ulrich Drepper <drepper@cygnus.com> * stdio-common/bug10.c (main): Correct parameter. 1997-02-17 02:51 Ulrich Drepper <drepper@cygnus.com> * malloc/obstack.h: Add `extern "C"' protection. * posix/regex.h: Likewise. * io/ftw.h: Likewise. * misc/libgen.h: Likewise. * login/utmp.h: Likewise. * sysdeps/unix/sysv/linux/sys/reboot.h: Likewise. * sysdeps/unix/sysv/linux/netinet/in.h: Likewise. * sunrpc/rpc/pmap_rmt.h: Likewise. * sunrpc/rpc/auth_des.h: Likewise. * elf/link.h: Likewise. Reported by HJ Lu. 1997-02-17 01:45 a sun <asun@zoology.washington.edu> Linux specific network headers. * sysdeps/unix/sysv/linux/netinet/if_fddi.h: New file. * sysdeps/unix/sysv/linux/netinet/if_tr.h: New file. * sysdeps/unix/sysv/linux/netinet/ip_icmp.h: New file. * sysdeps/unix/sysv/linux/netinet/ip_fw.h: New file. * sysdeps/unix/sysv/linux/netinet/igmp.h: New file. * sysdeps/unix/sysv/linux/netinet/icmp.h: New file. * sysdeps/unix/sysv/linux/netinet/ip.h: New file. * sysdeps/unix/sysv/linux/netinet/tcp.h: New file. * sysdeps/unix/sysv/linux/netipx/ipx.h: New file. * sysdeps/unix/sysv/linux/netatalk/atalk.h: New file. * sysdeps/unix/sysv/linux/Dist: Add new network headers. * sysdeps/unix/sysv/linux/Makefile [$(subdir)=misc] (sysdep_headers): Add sys/quota.h. [$(subdir)=inet] (sysdep_headers): Add new network header. * sysdeps/unix/sysv/linux/netinet/udp.h: Add Linux specific changes. * inet/netinet/ip.h: Move to sysdeps/generic. * inet/netinet/tcp.h: Likewise. * sysdeps/generic/netinet/ip.h: Moved to here from inet/netinet. * sysdeps/generic/netinet/tcp.h: Likewise. 1997-02-17 01:18 Ulrich Drepper <drepper@cygnus.com> * misc/sys/syslog.h (prioritynames): Correct definition to use braces where necessary. (facilitynames): Likewise. Patch by Ronald F. Guilmette <rfg@monkeys.com>. Comment and beautify declarations. 1997-02-16 19:54 1997 Philip Blundell <Philip.Blundell@pobox.com> * inet/Makefile (routines): Add in6_addr, getnameinfo. * inet/getnameinfo.c: New file. Implementation of getnameinfo() by Craig Metz. * inet/in6_addr.c: New file. IPv6 addressing constants. * posix/Makefile (routines): Add gai_strerror. * resolv/netdb.h: Add more constants for IPv6 basic API. * sysdeps/posix/gai_strerror.c: New file. * sysdeps/stub/gai_strerror.c New file. * sysdeps/unix/sysv/linux/netinet/in.h: Add definitions for IPv6 basic API. * sysdeps/posix/getaddrinfo.c: Update from latest version by Craig Metz and use reentrant getXXbyYY functions. 1997-02-15 14:32 Andreas Jaeger <aj@arthur.pfalz.de> * argp/argp.h: Declare argp_program_version as const char. * argp/argp-test.c: Likewise * stdlib/testrand.c (main): Declare main prototype. * stdlib/testdiv.c (main): Likewise. * string/testcopy.c (main): Likewise. * string/test-ffs.c (main): Likewise. * time/test_time.c (main): Likewise. * locale/duplocale.c (__duplocale): Return result. 1997-02-16 03:54 Ulrich Drepper <drepper@cygnus.com> * sysdeps/unix/sysv/linux/netinet/in.h: Declare bindresvport. Reported by fabsoft@fabserver1.zarm.uni-bremen.de. * nss/nss.h: Remove declaration of __nss_shlib_revision. * nss/nsswitch.c: Don't use NSS_SHLIB_VERSION macro. 1997-02-16 03:48 Thorsten Kukuk <kukuk@weber.uni-paderborn.de> * nis/nss_nis/nis-ethers.c (_nss_nis_getethernam_r): Rename to _nss_nis_gethostton_r. (_nss_nis_getetherbyaddr_r): Rename to _nss_nis_getntohost_r. 1997-02-15 22:37 Andy Berkheimer <andy@tho.org> * resolv/gethnamaddr.c (gethostbyname2): Test for ':' in name before trying to resolv name as numeric IPv6 address. * nss/digits_dots.c: Likewise. Sat Feb 15 04:51:08 1997 Ulrich Drepper <drepper@cygnus.com> * locale/setlocale.c (setlocale): Don't try to be clever about unused locales. When the existence of the locale files isn't tested the result of setlocale might be different. 1997-02-15 03:34 Ulrich Drepper <drepper@cygnus.com> * locale/setlocale.c (setlocale): Don't increment usage_count of new locale if it already has the value MAX_USAGE_COUNT (it might be the C locale data which is read-only).
1997-02-19 04:43:53 +00:00
/* The Inner Net License, Version 2.00
The author(s) grant permission for redistribution and use in source and
binary forms, with or without modification, of the software and documentation
provided that the following conditions are met:
0. If you receive a version of the software that is specifically labelled
as not being for redistribution (check the version message and/or README),
you are not permitted to redistribute that version of the software in any
way or form.
1. All terms of the all other applicable copyrights and licenses must be
followed.
2. Redistributions of source code must retain the authors' copyright
notice(s), this list of conditions, and the following disclaimer.
3. Redistributions in binary form must reproduce the authors' copyright
notice(s), this list of conditions, and the following disclaimer in the
documentation and/or other materials provided with the distribution.
4. All advertising materials mentioning features or use of this software
must display the following acknowledgement with the name(s) of the
authors as specified in the copyright notice(s) substituted where
indicated:
This product includes software developed by <name(s)>, The Inner
Net, and other contributors.
5. Neither the name(s) of the author(s) 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 ITS AUTHORS 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 AUTHORS 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.
If these license terms cause you a real problem, contact the author. */
/* This software is Copyright 1996 by Craig Metz, All Rights Reserved. */
#define INET6 1
#define LOCAL 1
#define HOSTTABLE 0
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#if LOCAL
#include <sys/un.h>
#include <sys/utsname.h>
#endif /* LOCAL */
#include <netdb.h>
#include <errno.h>
#include <string.h>
#include <stdio.h>
#include <unistd.h>
#ifndef AF_LOCAL
#define AF_LOCAL AF_UNIX
#endif /* AF_LOCAL */
#if HOSTTABLE
struct hostent *_addr2hostname_hosts(const char *, int, int);
#endif /* HOSTTABLE */
#ifndef MAXHOSTNAMELEN
#define MAXHOSTNAMELEN 128
#endif
#ifndef min
#define min(x,y) (((x) > (y)) ? (y) : (x))
#endif /* min */
static char *domain;
static char domainbuffer[MAXHOSTNAMELEN];
static char *
nrl_domainname (void)
{
static int first = 1;
if (first) {
char *c;
struct hostent *h;
first = 0;
if ((h = gethostbyname("localhost")) && (c = strchr(h->h_name, '.')))
return strcpy(domain = domainbuffer, ++c);
if (!gethostname(domainbuffer, sizeof(domainbuffer))) {
if (c = strchr(domainbuffer, '.'))
return (domain = ++c);
if ((h = gethostbyname(domainbuffer)) && (c = strchr(h->h_name, '.')))
return strcpy(domain = domainbuffer, ++c);
}
{
struct in_addr in_addr;
in_addr.s_addr = htonl(0x7f000001);
if ((h = gethostbyaddr((const char *)&in_addr, sizeof(struct in_addr), AF_INET)) && (c = strchr(h->h_name, '.')))
return strcpy(domain = domainbuffer, ++c);
}
return NULL;
};
return domain;
};
int getnameinfo(const struct sockaddr *sa, size_t addrlen, char *host, size_t hostlen, char *serv, size_t servlen, int flags)
{
int serrno = errno;
if (!sa)
return -1;
if (host && (hostlen > 0))
switch(sa->sa_family) {
case AF_INET:
#if INET6
case AF_INET6:
#endif /* INET6 */
if (!(flags & NI_NUMERICHOST)) {
struct hostent *h = NULL;
#if HOSTTABLE
#if INET6
if (sa->sa_family == AF_INET6)
h = _addr2hostname_hosts((void *)&(((struct sockaddr_in6 *)sa)->sin6_addr), sizeof(struct in6_addr), AF_INET6);
else
#endif /* INET6 */
h = _addr2hostname_hosts((void *)&(((struct sockaddr_in *)sa)->sin_addr), sizeof(struct in_addr), AF_INET);
#endif /* HOSTTABLE */
#if RESOLVER
if (!h) {
#if INET6
if (sa->sa_family == AF_INET6)
h = gethostbyaddr((void *)&(((struct sockaddr_in6 *)sa)->sin6_addr), sizeof(struct in6_addr), AF_INET6);
else
#endif /* INET6 */
h = gethostbyaddr((void *)&(((struct sockaddr_in *)sa)->sin_addr), sizeof(struct in_addr), AF_INET);
endhostent();
};
#endif /* RESOLVER */
if (h) {
if (flags & NI_NOFQDN) {
char *c;
if ((c = nrl_domainname()) && (c = strstr(h->h_name, c)) && (c != h->h_name) && (*(--c) == '.')) {
strncpy(host, h->h_name, min(hostlen, (c - h->h_name)));
break;
};
};
strncpy(host, h->h_name, hostlen);
break;
};
};
if (flags & NI_NAMEREQD)
goto fail;
{
const char *c;
#if INET6
if (sa->sa_family == AF_INET6)
c = inet_ntop(AF_INET6, (void *)&(((struct sockaddr_in6 *)sa)->sin6_addr), host, hostlen);
else
#endif /* INET6 */
c = inet_ntop(AF_INET, (void *)&(((struct sockaddr_in *)sa)->sin_addr), host, hostlen);
if (!c)
goto fail;
};
break;
#if LOCAL
case AF_LOCAL:
if (!(flags & NI_NUMERICHOST)) {
struct utsname utsname;
if (!uname(&utsname)) {
strncpy(host, utsname.nodename, hostlen);
break;
};
};
if (flags & NI_NAMEREQD)
goto fail;
strncpy(host, "localhost", hostlen);
break;
#endif /* LOCAL */
default:
return -1;
};
if (serv && (servlen > 0))
switch(sa->sa_family) {
case AF_INET:
#if INET6
case AF_INET6:
#endif /* INET6 */
if (!(flags & NI_NUMERICSERV)) {
struct servent *s;
if (s = getservbyport(((struct sockaddr_in *)sa)->sin_port, (flags & NI_DGRAM) ? "udp" : "tcp")) {
strncpy(serv, s->s_name, servlen);
break;
};
};
snprintf(serv, servlen, "%d", ntohs(((struct sockaddr_in *)sa)->sin_port));
break;
#if LOCAL
case AF_LOCAL:
strncpy(serv, ((struct sockaddr_un *)sa)->sun_path, servlen);
break;
#endif /* LOCAL */
};
if (host && (hostlen > 0))
host[hostlen-1] = 0;
if (serv && (servlen > 0))
serv[servlen-1] = 0;
errno = serrno;
return 0;
fail:
errno = serrno;
return -1;
};