diff options
Diffstat (limited to 'newlib/libc/sys/linux/net/gethostbynis.c')
| -rw-r--r-- | newlib/libc/sys/linux/net/gethostbynis.c | 281 |
1 files changed, 281 insertions, 0 deletions
diff --git a/newlib/libc/sys/linux/net/gethostbynis.c b/newlib/libc/sys/linux/net/gethostbynis.c new file mode 100644 index 000000000..917e9409d --- /dev/null +++ b/newlib/libc/sys/linux/net/gethostbynis.c @@ -0,0 +1,281 @@ +/*- + * 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> +#include <sys/types.h> +#include <sys/types.h> + +#include <sys/param.h> +#include <sys/socket.h> +#include <netinet/in.h> +#include <arpa/inet.h> +#include <arpa/nameser.h> +#include <netdb.h> +#include <stdio.h> +#include <stdlib.h> +#include <ctype.h> +#include <errno.h> +#include <string.h> +#include <stdarg.h> +#include <nsswitch.h> +#ifdef YP +#include <rpc/rpc.h> +#include <rpcsvc/yp_prot.h> +#include <rpcsvc/ypclnt.h> +#endif + +#ifdef YP +static char *host_aliases[MAXALIASES]; +static char hostaddr[MAXADDRS]; +static char *host_addrs[2]; + +static struct hostent * +_gethostbynis(name, map, af) + const char *name; + char *map; + int af; +{ + char *cp, **q; + char *result; + int resultlen,size; + static struct hostent h; + static char *domain = (char *)NULL; + static char ypbuf[YPMAXRECORD + 2]; + + switch(af) { + case AF_INET: + size = NS_INADDRSZ; + break; + default: + case AF_INET6: + size = NS_IN6ADDRSZ; + errno = EAFNOSUPPORT; + h_errno = NETDB_INTERNAL; + return NULL; + } + + if (domain == (char *)NULL) + if (yp_get_default_domain (&domain)) { + h_errno = NETDB_INTERNAL; + return ((struct hostent *)NULL); + } + + if (yp_match(domain, map, name, strlen(name), &result, &resultlen)) { + h_errno = HOST_NOT_FOUND; + return ((struct hostent *)NULL); + } + + /* avoid potential memory leak */ + bcopy((char *)result, (char *)&ypbuf, resultlen); + ypbuf[resultlen] = '\0'; + free(result); + result = (char *)&ypbuf; + + 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 = size; + 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); +} + +static struct hostent * +_gethostbynis_r(name, map, af, hp, buffer, buflen, herr) + const char *name; + char *map; + int af; + struct hostent *hp; + char *buffer; + int buflen; + int *herr; +{ + char *cp, **q; + char *result; + int resultlen,size; + char *domain = (char *)NULL; + + switch(af) { + case AF_INET: + size = NS_INADDRSZ; + break; + default: + case AF_INET6: + size = NS_IN6ADDRSZ; + errno = EAFNOSUPPORT; + *herr = NETDB_INTERNAL; + return NULL; + } + + if (domain == (char *)NULL) + if (yp_get_default_domain (&domain)) { + *herr = NETDB_INTERNAL; + return ((struct hostent *)NULL); + } + + if (yp_match(domain, map, name, strlen(name), &result, &resultlen)) { + *herr = HOST_NOT_FOUND; + return ((struct hostent *)NULL); + } + + /* avoid potential memory leak */ + bcopy((char *)result, buffer, resultlen); + buffer[resultlen] = '\0'; + free(result); + result = buffer; + + if ((cp = index(result, '\n'))) + *cp = '\0'; + + cp = strpbrk(result, " \t"); + *cp++ = '\0'; + *((u_long *)hp->__host_addrs[0]) = inet_addr(result); + hp->__host_addrs[1] = NULL; + hp->h_addr_list = hp->__host_addrs; + hp->h_addr = hp->__host_addrs[0]; + hp->h_length = size; + hp->h_addrtype = AF_INET; + while (*cp == ' ' || *cp == '\t') + cp++; + hp->h_name = cp; + q = hp->__host_aliases; + cp = strpbrk(cp, " \t"); + if (cp != NULL) + *cp++ = '\0'; + while (cp && *cp) { + if (*cp == ' ' || *cp == '\t') { + cp++; + continue; + } + if (q < &hp->__host_aliases[MAXALIASES - 1]) + *q++ = cp; + cp = strpbrk(cp, " \t"); + if (cp != NULL) + *cp++ = '\0'; + } + hp->h_aliases = hp->__host_aliases; + *q = NULL; + return (&hp); +} +#endif /* YP */ + +/* XXX _gethostbynisname/_gethostbynisaddr only used by getaddrinfo */ +struct hostent * +_gethostbynisname(const char *name, int af) +{ +#ifdef YP + return _gethostbynis(name, "hosts.byname", af); +#else + return NULL; +#endif +} + +struct hostent * +_gethostbynisaddr(const char *addr, int len, int af) +{ +#ifdef YP + return _gethostbynis(inet_ntoa(*(struct in_addr *)addr), + "hosts.byaddr", af); +#else + return NULL; +#endif +} + + +int +_nis_gethostbyname(void *rval, void *cb_data, va_list ap) +{ +#ifdef YP + const char *name; + int af; + struct hostent *resultbuf; + char *buf; + int buflen; + int *herr; + + name = va_arg(ap, const char *); + af = va_arg(ap, int); + resultbuf = va_arg(ap, struct hostent *); + buf = va_arg(ap, char *); + buflen = va_arg(ap, int); + herr = va_arg(ap, int *); + + *(struct hostent **)rval = _gethostbynis_r(name, "hosts.byname", af, resultbuf, buf, buflen, herr); + + return (*(struct hostent **)rval != NULL) ? NS_SUCCESS : NS_NOTFOUND; +#else + return NS_UNAVAIL; +#endif +} + +int +_nis_gethostbyaddr(void *rval, void *cb_data, va_list ap) +{ +#ifdef YP + const char *addr; + int len; + int af; + struct hostent *resultbuf; + char *buf; + int buflen; + int *herr; + + addr = va_arg(ap, const char *); + len = va_arg(ap, int); + af = va_arg(ap, int); + resultbuf = va_arg(ap, struct hostent *); + buf = va_arg(ap, char *); + buflen = va_arg(ap, int); + herr = va_arg(ap, int *); + + *(struct hostent **)rval = _gethostbynis_r(inet_ntoa(*(struct in_addr *)addr),"hosts.byaddr", af); + return (*(struct hostent **)rval != NULL) ? NS_SUCCESS : NS_NOTFOUND; +#else + return NS_UNAVAIL; +#endif +} |