diff options
Diffstat (limited to 'lib/libc/net/gethostnamadr.c')
| -rw-r--r-- | lib/libc/net/gethostnamadr.c | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/lib/libc/net/gethostnamadr.c b/lib/libc/net/gethostnamadr.c new file mode 100644 index 0000000..021acf2 --- /dev/null +++ b/lib/libc/net/gethostnamadr.c @@ -0,0 +1,149 @@ +/*- + * 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. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#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 <string.h> +#include <stdarg.h> +#include <nsswitch.h> +#include <arpa/nameser.h> /* XXX hack for _res */ +#include <resolv.h> /* XXX hack for _res */ + +extern int _ht_gethostbyname(void *, void *, va_list); +extern int _dns_gethostbyname(void *, void *, va_list); +extern int _nis_gethostbyname(void *, void *, va_list); +extern int _ht_gethostbyaddr(void *, void *, va_list); +extern int _dns_gethostbyaddr(void *, void *, va_list); +extern int _nis_gethostbyaddr(void *, void *, va_list); + +/* Host lookup order if nsswitch.conf is broken or nonexistant */ +static const ns_src default_src[] = { + { NSSRC_FILES, NS_SUCCESS }, + { NSSRC_DNS, NS_SUCCESS }, + { 0 } +}; + +struct hostent * +gethostbyname(const char *name) +{ + struct hostent *hp; + + if ((_res.options & RES_INIT) == 0 && res_init() == -1) { + h_errno = NETDB_INTERNAL; + return (NULL); + } + if (_res.options & RES_USE_INET6) { /* XXX */ + hp = gethostbyname2(name, AF_INET6); /* XXX */ + if (hp) /* XXX */ + return (hp); /* XXX */ + } /* XXX */ + return (gethostbyname2(name, AF_INET)); +} + +struct hostent * +gethostbyname2(const char *name, int type) +{ + struct hostent *hp = 0; + int rval; + + static const ns_dtab dtab[] = { + NS_FILES_CB(_ht_gethostbyname, NULL) + { NSSRC_DNS, _dns_gethostbyname, NULL }, + NS_NIS_CB(_nis_gethostbyname, NULL) /* force -DHESIOD */ + { 0 } + }; + + rval = nsdispatch((void *)&hp, dtab, NSDB_HOSTS, "gethostbyname", + default_src, name, type); + + if (rval != NS_SUCCESS) + return NULL; + else + return hp; +} + +struct hostent * +gethostbyaddr(const char *addr, int len, int type) +{ + struct hostent *hp = 0; + int rval; + + static const ns_dtab dtab[] = { + NS_FILES_CB(_ht_gethostbyaddr, NULL) + { NSSRC_DNS, _dns_gethostbyaddr, NULL }, + NS_NIS_CB(_nis_gethostbyaddr, NULL) /* force -DHESIOD */ + { 0 } + }; + + rval = nsdispatch((void *)&hp, dtab, NSDB_HOSTS, "gethostbyaddr", + default_src, addr, len, type); + + if (rval != NS_SUCCESS) + return NULL; + else + return hp; +} + +struct hostent_data; + +/* + * Temporary function (not thread safe) + */ +int gethostbyaddr_r(const char *addr, int len, int type, + struct hostent *result, struct hostent_data *buffer) +{ + struct hostent *hp; + int ret; + if ((hp = gethostbyaddr(addr, len, type)) == NULL) { + ret = -1; + } else { + memcpy(result, hp, sizeof(struct hostent)); + ret = 0; + } + return(ret); +} + +void +sethostent(stayopen) + int stayopen; +{ + _sethosthtent(stayopen); + _sethostdnsent(stayopen); +} + +void +endhostent() +{ + _endhosthtent(); + _endhostdnsent(); +} |
