diff options
Diffstat (limited to 'cpukit/libnetworking/libc/gethostbyht.c')
| -rw-r--r-- | cpukit/libnetworking/libc/gethostbyht.c | 349 |
1 files changed, 0 insertions, 349 deletions
diff --git a/cpukit/libnetworking/libc/gethostbyht.c b/cpukit/libnetworking/libc/gethostbyht.c deleted file mode 100644 index 50f31294a9..0000000000 --- a/cpukit/libnetworking/libc/gethostbyht.c +++ /dev/null @@ -1,349 +0,0 @@ -#include <machine/rtems-bsd-user-space.h> - -/*- - * Copyright (c) 1985, 1988, 1993 - * The Regents of the University of California. All rights reserved. - * - * 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. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University 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 THE REGENTS 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 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. - * - - * Portions Copyright (c) 1993 by Digital Equipment Corporation. - * - * Permission to use, copy, modify, and distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies, and that - * the name of Digital Equipment Corporation not be used in advertising or - * publicity pertaining to distribution of the document or software without - * specific, written prior permission. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL - * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT - * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL - * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR - * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS - * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS - * SOFTWARE. - * - - * --Copyright-- - */ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include <sys/param.h> -#include <sys/socket.h> -#include <netinet/in.h> -#include <arpa/inet.h> -#include <netdb.h> -#include <rtems/rtems_netdb.h> -#include <stdio.h> -#include <stdlib.h> /* realloc, malloc, free */ -#include <ctype.h> -#include <errno.h> -#include <string.h> -#ifdef HAVE_STRINGS_H -#include <strings.h> -#endif -#include <arpa/nameser.h> /* XXX */ -#include <resolv.h> /* XXX */ -#include <sys/fcntl.h> - -#define MAXALIASES 35 - -static struct hostent host; -static char *host_aliases[MAXALIASES]; -static char hostbuf[BUFSIZ+1]; -static FILE *hostf = NULL; -static u_char host_addr[16]; /* IPv4 or IPv6 */ -static char *h_addr_ptrs[2]; -static int stayopen = 0; - -#ifdef _THREAD_SAFE -static char* hostmap = NULL; -static unsigned int hostlen = 0; -static char *cur; -#endif - -void -_sethosthtent(int f) -{ - if (!hostf) - hostf = fopen(_PATH_HOSTS, "r" ); - else - rewind(hostf); - stayopen = f; -} - -void -_endhosthtent(void) -{ - if (hostf && !stayopen) { - (void) fclose(hostf); - hostf = NULL; - } -} - -struct hostent * -gethostent(void) -{ - char *p; - register char *cp, **q; - int af, len; - - if (!hostf && !(hostf = fopen(_PATH_HOSTS, "r" ))) { - h_errno = NETDB_INTERNAL; - return (NULL); - } - again: - if (!(p = fgets(hostbuf, sizeof hostbuf, hostf))) { - h_errno = HOST_NOT_FOUND; - return (NULL); - } - if (*p == '#') - goto again; - if (!(cp = strpbrk(p, "#\n"))) - goto again; - *cp = '\0'; - if (!(cp = strpbrk(p, " \t"))) - goto again; - *cp++ = '\0'; - if (inet_pton(AF_INET6, p, host_addr) > 0) { - af = AF_INET6; - len = IN6ADDRSZ; - } else if (inet_pton(AF_INET, p, host_addr) > 0) { - if (_res.options & RES_USE_INET6) { - _map_v4v6_address((char*)host_addr, (char*)host_addr); - af = AF_INET6; - len = IN6ADDRSZ; - } else { - af = AF_INET; - len = INADDRSZ; - } - } else { - goto again; - } - h_addr_ptrs[0] = (char *)host_addr; - h_addr_ptrs[1] = NULL; - host.h_addr_list = h_addr_ptrs; - host.h_length = len; - host.h_addrtype = af; - while (*cp == ' ' || *cp == '\t') - cp++; - host.h_name = cp; - q = host.h_aliases = host_aliases; - if ((cp = strpbrk(cp, " \t")) != NULL) - *cp++ = '\0'; - while (cp && *cp) { - if (*cp == ' ' || *cp == '\t') { - cp++; - continue; - } - if (q < &host_aliases[MAXALIASES - 1]) - *q++ = cp; - if ((cp = strpbrk(cp, " \t")) != NULL) - *cp++ = '\0'; - } - *q = NULL; - h_errno = NETDB_SUCCESS; - return (&host); -} - -struct hostent * -_gethostbyhtname( - const char *name, - int af) -{ - register struct hostent *p; - register char **cp; - - sethostent(0); - while ((p = gethostent()) != NULL) { - if (p->h_addrtype != af) - continue; - if (strcasecmp(p->h_name, name) == 0) - break; - for (cp = p->h_aliases; *cp != 0; cp++) - if (strcasecmp(*cp, name) == 0) - goto found; - } -found: - endhostent(); - return (p); -} - -struct hostent * -_gethostbyhtaddr( - const char *addr, - int len, - int af) -{ - register struct hostent *p; - - sethostent(0); - while ((p = gethostent()) != NULL) - if (p->h_addrtype == af && !bcmp(p->h_addr, addr, len)) - break; - endhostent(); - return (p); -} - - -#ifdef _THREAD_SAFE -int -gethostent_r( - struct hostent *pe, - char *buf, - size_t len, - struct hostent **result, - int *h_errnop) -{ - char *dest; - char* last; - char* max=buf+len; - int aliasidx; - int curlen; - int rv; - - if (pe == NULL || buf == NULL || result == NULL || h_errnop == NULL) { - if (h_errnop != NULL) { - *h_errnop = NETDB_INTERNAL; - } - return EINVAL; - } - - *result = NULL; - *h_errnop = NETDB_INTERNAL; - rv = -1; - - if (!hostf) { - rv = ENOENT; - return rv; - } - fseek(hostf,0,SEEK_END); - curlen=ftell(hostf); - fseek(hostf,0,SEEK_SET); - - if (curlen > hostlen) { - if (hostmap) { - hostmap = realloc(hostmap,curlen); - } - else { - hostmap = malloc(curlen); - } - } - hostlen = curlen; - - if (hostmap) { - if (fread(hostmap,hostlen,1,hostf) != hostlen) { - hostmap=0; goto error; - } - cur=hostmap; - } - last=hostmap+hostlen; -again: - if ((size_t)len<sizeof(struct hostent)+11*sizeof(char*)) goto nospace; - dest=buf; - pe->h_name=0; - pe->h_aliases=(char**)dest; pe->h_aliases[0]=0; dest+=10*sizeof(char*); - pe->h_addr_list=(char**)dest; dest+=2*sizeof(char**); - if (cur>=last) { - rv = ERANGE; - return rv; - } - if (*cur=='#' || *cur=='\n') goto parseerror; - /* first, the ip number */ - pe->h_name=cur; - while (cur<last && !isspace((unsigned char)*cur)) cur++; - if (cur>=last) { - rv = ERANGE; - return rv; - } - if (*cur=='\n') goto parseerror; - { - char save=*cur; - *cur=0; - pe->h_addr_list[0]=dest; - pe->h_addr_list[1]=0; - if (max-dest<16) goto nospace; - if (inet_pton(AF_INET6,pe->h_name,dest)>0) { - pe->h_addrtype=AF_INET6; - pe->h_length=16; - dest+=16; - } else if (inet_pton(AF_INET,pe->h_name,dest)>0) { - pe->h_addrtype=AF_INET; - pe->h_length=4; - dest+=4; - } else { - *cur=save; - goto parseerror; - } - *cur=save; - } - ++cur; - /* now the aliases */ - for (aliasidx=0;aliasidx<9;++aliasidx) { - while (cur<last && isblank((unsigned char)*cur)) ++cur; - pe->h_aliases[aliasidx]=cur; - while (cur<last && !isspace((unsigned char)*cur)) ++cur; - { - char *from=pe->h_aliases[aliasidx]; - int len=cur-from; - if (max-dest<len+2) goto nospace; - pe->h_aliases[aliasidx]=dest; - memmove(dest,from,(size_t)(cur-from)); - dest+=len; - *dest=0; ++dest; - } - if (*cur=='\n') { ++cur; ++aliasidx; break; } - if (cur>=last || !isblank((unsigned char)*cur)) break; - cur++; - } - pe->h_aliases[aliasidx]=0; - pe->h_name=pe->h_aliases[0]; - pe->h_aliases++; - *result = pe; - *h_errnop = 0; - rv = 0; - return rv; -parseerror: - while (cur<last && *cur!='\n') cur++; - cur++; - goto again; -nospace: - rv=ERANGE; - goto __error; -error: - rv=ENOMEM; -__error: - if (hostmap!=NULL) free(hostmap); - hostmap=NULL; - return rv; -} -#endif |