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Diffstat (limited to 'lib/libc/net/gethostbynis.c')
-rw-r--r-- | lib/libc/net/gethostbynis.c | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/lib/libc/net/gethostbynis.c b/lib/libc/net/gethostbynis.c new file mode 100644 index 0000000..53b426d --- /dev/null +++ b/lib/libc/net/gethostbynis.c @@ -0,0 +1,115 @@ +/*- + * Copyright (c) 1994, Garrett Wollman + * + * 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. + * + * THIS SOFTWARE IS PROVIDED BY THE 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 REGENTS 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 defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)$Id$"; +static char rcsid[] = "$Id$"; +#endif /* LIBC_SCCS and not lint */ + +#include <sys/param.h> +#include <sys/socket.h> +#include <netinet/in.h> +#include <arpa/inet.h> +#include <netdb.h> +#include <stdio.h> +#include <ctype.h> +#include <errno.h> +#include <string.h> + +#define MAXALIASES 35 +#define MAXADDRS 35 + +#ifdef YP +static char *host_aliases[MAXALIASES]; +static char hostaddr[MAXADDRS]; +static char *host_addrs[2]; +#endif /* YP */ + +static struct hostent * +_gethostbynis(name, map) + char *name, *map; +{ +#ifdef YP + register char *cp, **q; + char *result; + int resultlen; + static struct hostent h; + static char *domain = (char *)NULL; + + if (domain == (char *)NULL) + if (yp_get_default_domain (&domain)) + return ((struct hostent *)NULL); + + if (yp_match(domain, map, name, strlen(name), &result, &resultlen)) + return ((struct hostent *)NULL); + + if ((cp = index(result, '\n'))) + *cp = '\0'; + + cp = strpbrk(result, " \t"); + *cp++ = '\0'; + h.h_addr_list = host_addrs; + h.h_addr = hostaddr; + *((u_long *)h.h_addr) = inet_addr(result); + h.h_length = sizeof(u_long); + h.h_addrtype = AF_INET; + while (*cp == ' ' || *cp == '\t') + cp++; + h.h_name = cp; + q = h.h_aliases = host_aliases; + cp = strpbrk(cp, " \t"); + if (cp != NULL) + *cp++ = '\0'; + while (cp && *cp) { + if (*cp == ' ' || *cp == '\t') { + cp++; + continue; + } + if (q < &host_aliases[MAXALIASES - 1]) + *q++ = cp; + cp = strpbrk(cp, " \t"); + if (cp != NULL) + *cp++ = '\0'; + } + *q = NULL; + return (&h); +#else + return (NULL); +#endif /* YP */ +} + +struct hostent * +_gethostbynisname(name) + char *name; +{ + return _gethostbynis(name, "hosts.byname"); +} + +struct hostent * +_gethostbynisaddr(name) + char *name; +{ + return _gethostbynis(name, "hosts.byaddr"); +} |