Import (trimmed) ISC bind-8.1.2-t3b. This will be updated to 8.1.2 on

final release.

Obtained from:  ftp.isc.org

1 files changed, 306 insertions, 0 deletions

diff --git a/contrib/bind/lib/irs/nis_nw.c b/contrib/bind/lib/irs/nis_nw.c
new file mode 100644
index 0000000..b9e9e79
--- /dev/null
+++ b/contrib/bind/lib/irs/nis_nw.c
@@ -0,0 +1,306 @@
+/*
+ * Copyright (c) 1996 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: nis_nw.c,v 1.10 1997/12/04 04:58:00 halley Exp $";
+#endif /* LIBC_SCCS and not lint */
+
+/* Imports */
+
+#include "port_before.h"
+
+#ifndef WANT_IRS_NIS
+static int __bind_irs_nis_unneeded;
+#else
+
+#include <sys/types.h>
+
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <sys/socket.h>
+#include <rpc/rpc.h>
+#include <rpc/xdr.h>
+#include <rpcsvc/yp_prot.h>
+#include <rpcsvc/ypclnt.h>
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <irs.h>
+
+#include "port_after.h"
+
+#include "irs_p.h"
+#include "nis_p.h"
+
+/* Definitions */
+
+#define MAXALIASES 35
+#define MAXADDRSIZE 4
+
+struct pvt {
+	int		needrewind;
+	char *		nis_domain;
+	char *		curkey_data;
+	int		curkey_len;
+	char *		curval_data;
+	int		curval_len;
+
+	struct nwent 	nwent;
+	char *		nwbuf;
+
+	char *		aliases[MAXALIASES + 1];
+	u_char		addr[MAXADDRSIZE];
+};
+
+enum do_what { do_none = 0x0, do_key = 0x1, do_val = 0x2, do_all = 0x3 };
+
+static /*const*/ char networks_byname[] = "networks.byname";
+static /*const*/ char networks_byaddr[] = "networks.byaddr";
+
+/* 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 nwent *	makenwent(struct irs_nw *this);
+static void		nisfree(struct pvt *, enum do_what);
+
+/* Public */
+
+struct irs_nw *
+irs_nis_nw(struct irs_acc *this) {
+	struct irs_nw *nw;
+	struct pvt *pvt;
+
+	if (!(nw = (struct irs_nw *)malloc(sizeof *nw))) {
+		errno = ENOMEM;
+		return (NULL);
+	}
+	memset(nw, 0x5e, sizeof *nw);
+	if (!(pvt = (struct pvt *)malloc(sizeof *pvt))) {
+		free(nw);
+		errno = ENOMEM;
+		return (NULL);
+	}
+	memset(pvt, 0, sizeof *pvt);
+	pvt->needrewind = 1;
+	pvt->nis_domain = ((struct nis_p *)this->private)->domain;
+	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;
+	return (nw);
+}
+
+/* Methods */
+
+static void
+nw_close(struct irs_nw *this) {
+	struct pvt *pvt = (struct pvt *)this->private;	
+
+	if (pvt->nwbuf)
+		free(pvt->nwbuf);
+	free(pvt);
+	free(this);
+}
+
+static struct nwent *
+nw_byaddr(struct irs_nw *this, void *net, int length, int af) {
+	struct pvt *pvt = (struct pvt *)this->private;
+	char tmp[sizeof "255.255.255.255/32"], *t;
+	int r;
+
+	if (af != AF_INET) {
+		h_errno = NETDB_INTERNAL;
+		errno = EAFNOSUPPORT;
+		return (NULL);
+	}
+	nisfree(pvt, do_val);
+	/* Try it with /CIDR first. */
+	if (inet_net_ntop(AF_INET, net, length, tmp, sizeof tmp) == NULL) {
+		h_errno = NETDB_INTERNAL;
+		return (NULL);
+	}
+	r = yp_match(pvt->nis_domain, networks_byaddr, tmp, strlen(tmp),
+		     &pvt->curval_data, &pvt->curval_len);
+	if (r != 0) {
+		/* Give it a shot without the /CIDR. */
+		if ((t = strchr(tmp, '/')) != NULL) {
+			*t = '\0';
+			r = yp_match(pvt->nis_domain, networks_byaddr,
+				     tmp, strlen(tmp),
+				     &pvt->curval_data, &pvt->curval_len);
+		}
+		if (r != 0) {
+			h_errno = HOST_NOT_FOUND;
+			return (NULL);
+		}
+	}
+	return (makenwent(this));
+}
+
+static struct nwent *
+nw_byname(struct irs_nw *this, const char *name, int af) {
+	struct pvt *pvt = (struct pvt *)this->private;
+	int r;
+	
+	if (af != AF_INET) {
+		h_errno = NETDB_INTERNAL;
+		errno = EAFNOSUPPORT;
+		return (NULL);
+	}
+	nisfree(pvt, do_val);
+	r = yp_match(pvt->nis_domain, networks_byname, (char *)name,
+		     strlen(name), &pvt->curval_data, &pvt->curval_len);
+	if (r != 0) {
+		h_errno = HOST_NOT_FOUND;
+		return (NULL);
+	}
+	return (makenwent(this));
+}
+
+static void
+nw_rewind(struct irs_nw *this) {
+	struct pvt *pvt = (struct pvt *)this->private;
+
+	pvt->needrewind = 1;
+}
+
+static struct nwent *
+nw_next(struct irs_nw *this) {
+	struct pvt *pvt = (struct pvt *)this->private;
+	struct nwent *rval;
+	int r;
+
+	do {
+		if (pvt->needrewind) {
+			nisfree(pvt, do_all);
+			r = yp_first(pvt->nis_domain, networks_byaddr,
+				     &pvt->curkey_data, &pvt->curkey_len,
+				     &pvt->curval_data, &pvt->curval_len);
+			pvt->needrewind = 0;
+		} else {
+			char *newkey_data;
+			int newkey_len;
+
+			nisfree(pvt, do_val);
+			r = yp_next(pvt->nis_domain, networks_byaddr,
+				    pvt->curkey_data, pvt->curkey_len,
+				    &newkey_data, &newkey_len,
+				    &pvt->curval_data, &pvt->curval_len);
+			nisfree(pvt, do_key);
+			pvt->curkey_data = newkey_data;
+			pvt->curkey_len = newkey_len;
+		}
+		if (r != 0) {
+			h_errno = HOST_NOT_FOUND;
+			return (NULL);
+		}
+		rval = makenwent(this);
+	} while (rval == NULL);
+	return (rval);
+}
+
+static void
+nw_minimize(struct irs_nw *this) {
+	/* NOOP */
+}
+
+/* Private */
+
+static struct nwent *
+makenwent(struct irs_nw *this) {
+	static const char spaces[] = " \t";
+	struct pvt *pvt = (struct pvt *)this->private;
+	char *t, *cp, **ap;
+
+	if (pvt->nwbuf)
+		free(pvt->nwbuf);
+	pvt->nwbuf = pvt->curval_data;
+	pvt->curval_data = NULL;
+
+	if ((cp = strchr(pvt->nwbuf, '#')) != NULL)
+		*cp = '\0';
+	cp = pvt->nwbuf;
+
+	/* Name */
+	pvt->nwent.n_name = cp;
+	cp += strcspn(cp, spaces);
+	if (!*cp)
+		goto cleanup;
+	*cp++ = '\0';
+	cp += strspn(cp, spaces);
+
+	/* Network */
+	pvt->nwent.n_addrtype = AF_INET;
+	t = cp + strcspn(cp, spaces);
+	if (*t)
+		*t++ = '\0';
+	pvt->nwent.n_length = inet_net_pton(AF_INET, cp,
+					    pvt->addr, sizeof pvt->addr);
+	if (pvt->nwent.n_length < 0)
+		goto cleanup;
+	pvt->nwent.n_addr = pvt->addr;
+	cp = t;
+
+	/* Aliases */
+	ap = pvt->nwent.n_aliases = pvt->aliases;
+	while (*cp) {
+		if (ap >= &pvt->aliases[MAXALIASES])
+			break;
+		*ap++ = cp;
+		cp += strcspn(cp, spaces);
+		if (!*cp)
+			break;
+		*cp++ = '\0';
+		cp += strspn(cp, spaces);
+	}
+	*ap = NULL;
+
+	return (&pvt->nwent);
+
+ cleanup:
+	if (pvt->nwbuf) {
+		free(pvt->nwbuf);
+		pvt->nwbuf = NULL;
+	}
+	return (NULL);
+}
+
+static void
+nisfree(struct pvt *pvt, enum do_what do_what) {
+	if ((do_what & do_key) && pvt->curkey_data) {
+		free(pvt->curkey_data);
+		pvt->curkey_data = NULL;
+	}
+	if ((do_what & do_val) && pvt->curval_data) {
+		free(pvt->curval_data);
+		pvt->curval_data = NULL;
+	}
+}
+
+#endif /*WANT_IRS_NIS*/