diff options
Diffstat (limited to 'contrib/bind/lib/irs/lcl_nw.c')
| -rw-r--r-- | contrib/bind/lib/irs/lcl_nw.c | 371 |
1 files changed, 0 insertions, 371 deletions
diff --git a/contrib/bind/lib/irs/lcl_nw.c b/contrib/bind/lib/irs/lcl_nw.c deleted file mode 100644 index 457621b..0000000 --- a/contrib/bind/lib/irs/lcl_nw.c +++ /dev/null @@ -1,371 +0,0 @@ -/* - * Copyright (c) 1989, 1993, 1995 - * 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) 1996-1999 by Internet Software Consortium. - * - * 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. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS - * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE - * CONSORTIUM 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. - */ - -#if defined(LIBC_SCCS) && !defined(lint) -static const char rcsid[] = "$Id: lcl_nw.c,v 1.22 2001/05/29 05:49:07 marka Exp $"; -/* from getgrent.c 8.2 (Berkeley) 3/21/94"; */ -/* from BSDI Id: getgrent.c,v 2.8 1996/05/28 18:15:14 bostic Exp $ */ -#endif /* LIBC_SCCS and not lint */ - -/* Imports */ - -#include "port_before.h" - -#include <sys/types.h> -#include <sys/socket.h> - -#include <netinet/in.h> -#include <arpa/inet.h> -#include <arpa/nameser.h> - -#include <errno.h> -#include <fcntl.h> -#include <resolv.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#include <irs.h> -#include <isc/memcluster.h> - -#include "port_after.h" - -#include <isc/misc.h> -#include "irs_p.h" -#include "lcl_p.h" - -#define MAXALIASES 35 -#define MAXADDRSIZE 4 - -struct pvt { - FILE * fp; - char line[BUFSIZ+1]; - struct nwent net; - char * aliases[MAXALIASES]; - char addr[MAXADDRSIZE]; - struct __res_state * res; - void (*free_res)(void *); -}; - -/* Forward */ - -static void nw_close(struct irs_nw *); -static struct nwent * nw_byname(struct irs_nw *, const char *, int); -static struct nwent * nw_byaddr(struct irs_nw *, void *, int, int); -static struct nwent * nw_next(struct irs_nw *); -static void nw_rewind(struct irs_nw *); -static void nw_minimize(struct irs_nw *); -static struct __res_state * nw_res_get(struct irs_nw *this); -static void nw_res_set(struct irs_nw *this, - struct __res_state *res, - void (*free_res)(void *)); - -static int init(struct irs_nw *this); - -/* Portability. */ - -#ifndef SEEK_SET -# define SEEK_SET 0 -#endif - -/* Public */ - -struct irs_nw * -irs_lcl_nw(struct irs_acc *this) { - struct irs_nw *nw; - struct pvt *pvt; - - UNUSED(this); - - if (!(pvt = memget(sizeof *pvt))) { - errno = ENOMEM; - return (NULL); - } - memset(pvt, 0, sizeof *pvt); - if (!(nw = memget(sizeof *nw))) { - memput(pvt, sizeof *pvt); - errno = ENOMEM; - return (NULL); - } - memset(nw, 0x5e, sizeof *nw); - nw->private = pvt; - nw->close = nw_close; - nw->byname = nw_byname; - nw->byaddr = nw_byaddr; - nw->next = nw_next; - nw->rewind = nw_rewind; - nw->minimize = nw_minimize; - nw->res_get = nw_res_get; - nw->res_set = nw_res_set; - return (nw); -} - -/* Methods */ - -static void -nw_close(struct irs_nw *this) { - struct pvt *pvt = (struct pvt *)this->private; - - nw_minimize(this); - if (pvt->res && pvt->free_res) - (*pvt->free_res)(pvt->res); - if (pvt->fp) - (void)fclose(pvt->fp); - memput(pvt, sizeof *pvt); - memput(this, sizeof *this); -} - -static struct nwent * -nw_byaddr(struct irs_nw *this, void *net, int length, int type) { - struct nwent *p; - - if (init(this) == -1) - return(NULL); - - nw_rewind(this); - while ((p = nw_next(this)) != NULL) - if (p->n_addrtype == type && p->n_length == length) - if (bitncmp(p->n_addr, net, length) == 0) - break; - return (p); -} - -static struct nwent * -nw_byname(struct irs_nw *this, const char *name, int type) { - struct nwent *p; - char **ap; - - if (init(this) == -1) - return(NULL); - - nw_rewind(this); - while ((p = nw_next(this)) != NULL) { - if (ns_samename(p->n_name, name) == 1 && - p->n_addrtype == type) - break; - for (ap = p->n_aliases; *ap; ap++) - if ((ns_samename(*ap, name) == 1) && - (p->n_addrtype == type)) - goto found; - } - found: - return (p); -} - -static void -nw_rewind(struct irs_nw *this) { - struct pvt *pvt = (struct pvt *)this->private; - - if (pvt->fp) { - if (fseek(pvt->fp, 0L, SEEK_SET) == 0) - return; - (void)fclose(pvt->fp); - } - if (!(pvt->fp = fopen(_PATH_NETWORKS, "r"))) - return; - if (fcntl(fileno(pvt->fp), F_SETFD, 1) < 0) { - (void)fclose(pvt->fp); - pvt->fp = NULL; - } -} - -static struct nwent * -nw_next(struct irs_nw *this) { - struct pvt *pvt = (struct pvt *)this->private; - struct nwent *ret = NULL; - char *p, *cp, **q; - char *bufp, *ndbuf, *dbuf = NULL; - int c, bufsiz, offset = 0; - - if (init(this) == -1) - return(NULL); - - if (pvt->fp == NULL) - nw_rewind(this); - if (pvt->fp == NULL) { - RES_SET_H_ERRNO(pvt->res, NETDB_INTERNAL); - return (NULL); - } - bufp = pvt->line; - bufsiz = sizeof(pvt->line); - - again: - p = fgets(bufp + offset, bufsiz - offset, pvt->fp); - if (p == NULL) - goto cleanup; - if (!strchr(p, '\n') && !feof(pvt->fp)) { -#define GROWBUF 1024 - /* allocate space for longer line */ - if (dbuf == NULL) { - if ((ndbuf = malloc(bufsiz + GROWBUF)) != NULL) - strcpy(ndbuf, bufp); - } else - ndbuf = realloc(dbuf, bufsiz + GROWBUF); - if (ndbuf) { - dbuf = ndbuf; - bufp = dbuf; - bufsiz += GROWBUF; - offset = strlen(dbuf); - } else { - /* allocation failed; skip this long line */ - while ((c = getc(pvt->fp)) != EOF) - if (c == '\n') - break; - if (c != EOF) - ungetc(c, pvt->fp); - } - goto again; - } - - p -= offset; - offset = 0; - - if (*p == '#') - goto again; - - cp = strpbrk(p, "#\n"); - if (cp != NULL) - *cp = '\0'; - pvt->net.n_name = p; - cp = strpbrk(p, " \t"); - if (cp == NULL) - goto again; - *cp++ = '\0'; - while (*cp == ' ' || *cp == '\t') - cp++; - p = strpbrk(cp, " \t"); - if (p != NULL) - *p++ = '\0'; - pvt->net.n_length = inet_net_pton(AF_INET, cp, pvt->addr, - sizeof pvt->addr); - if (pvt->net.n_length < 0) - goto again; - pvt->net.n_addrtype = AF_INET; - pvt->net.n_addr = pvt->addr; - q = pvt->net.n_aliases = pvt->aliases; - if (p != NULL) { - cp = p; - while (cp && *cp) { - if (*cp == ' ' || *cp == '\t') { - cp++; - continue; - } - if (q < &pvt->aliases[MAXALIASES - 1]) - *q++ = cp; - cp = strpbrk(cp, " \t"); - if (cp != NULL) - *cp++ = '\0'; - } - } - *q = NULL; - ret = &pvt->net; - - cleanup: - if (dbuf) - free(dbuf); - - return (ret); -} - -static void -nw_minimize(struct irs_nw *this) { - struct pvt *pvt = (struct pvt *)this->private; - - if (pvt->res) - res_nclose(pvt->res); - if (pvt->fp != NULL) { - (void)fclose(pvt->fp); - pvt->fp = NULL; - } -} - -static struct __res_state * -nw_res_get(struct irs_nw *this) { - struct pvt *pvt = (struct pvt *)this->private; - - if (!pvt->res) { - struct __res_state *res; - res = (struct __res_state *)malloc(sizeof *res); - if (!res) { - errno = ENOMEM; - return (NULL); - } - memset(res, 0, sizeof *res); - nw_res_set(this, res, free); - } - - return (pvt->res); -} - -static void -nw_res_set(struct irs_nw *this, struct __res_state *res, - void (*free_res)(void *)) { - struct pvt *pvt = (struct pvt *)this->private; - - if (pvt->res && pvt->free_res) { - res_nclose(pvt->res); - (*pvt->free_res)(pvt->res); - } - - pvt->res = res; - pvt->free_res = free_res; -} - -static int -init(struct irs_nw *this) { - struct pvt *pvt = (struct pvt *)this->private; - - if (!pvt->res && !nw_res_get(this)) - return (-1); - if (((pvt->res->options & RES_INIT) == 0) && - res_ninit(pvt->res) == -1) - return (-1); - return (0); -} |
