Flatten bind9 vendor work area

1 files changed, 294 insertions, 0 deletions

diff --git a/lib/bind/irs/dns_gr.c b/lib/bind/irs/dns_gr.c
new file mode 100644
index 0000000..358e5a7
--- /dev/null
+++ b/lib/bind/irs/dns_gr.c
@@ -0,0 +1,294 @@
+/*
+ * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
+ * 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 ISC DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC 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: dns_gr.c,v 1.3.18.1 2005/04/27 05:00:54 sra Exp $";
+#endif
+
+/*! \file
+ * \brief
+ * dns_gr.c --- this file contains the functions for accessing
+ * 	group information from Hesiod.
+ */
+
+#include "port_before.h"
+
+#ifndef WANT_IRS_GR
+static int __bind_irs_gr_unneeded;
+#else
+
+#include <sys/param.h>
+#include <sys/types.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <unistd.h>
+
+#include <sys/types.h>
+#include <netinet/in.h> 
+#include <arpa/nameser.h>
+#include <resolv.h>
+
+#include <isc/memcluster.h>
+
+#include <irs.h>
+
+#include "port_after.h"
+
+#include "irs_p.h"
+#include "hesiod.h"
+#include "dns_p.h"
+
+/* Types. */
+
+struct pvt {
+	/*
+	 * This is our private accessor data.  It has a shared hesiod context.
+	 */
+	struct dns_p *	dns;
+	/*
+	 * Need space to store the entries read from the group file.
+	 * The members list also needs space per member, and the
+	 * strings making up the user names must be allocated
+	 * somewhere.  Rather than doing lots of small allocations,
+	 * we keep one buffer and resize it as needed.
+	 */
+	struct group	group;
+	size_t		nmemb;		/*%< Malloc'd max index of gr_mem[]. */
+	char *		membuf;
+	size_t		membufsize;
+};
+
+/* Forward. */
+
+static struct group *	gr_next(struct irs_gr *);
+static struct group *	gr_byname(struct irs_gr *, const char *);
+static struct group *	gr_bygid(struct irs_gr *, gid_t);
+static void		gr_rewind(struct irs_gr *);
+static void		gr_close(struct irs_gr *);
+static int		gr_list(struct irs_gr *, const char *,
+				gid_t, gid_t *, int *);
+static void		gr_minimize(struct irs_gr *);
+static struct __res_state * gr_res_get(struct irs_gr *);
+static void		gr_res_set(struct irs_gr *,
+				   struct __res_state *,
+				   void (*)(void *));
+
+static struct group *	get_hes_group(struct irs_gr *this,
+				      const char *name,
+				      const char *type);
+
+/* Public. */
+
+struct irs_gr *
+irs_dns_gr(struct irs_acc *this) {
+	struct dns_p *dns = (struct dns_p *)this->private;
+	struct irs_gr *gr;
+	struct pvt *pvt;
+
+	if (!dns || !dns->hes_ctx) {
+		errno = ENODEV;
+		return (NULL);
+	}
+	if (!(pvt = memget(sizeof *pvt))) {
+		errno = ENOMEM;
+		return (NULL);
+	}
+	memset(pvt, 0, sizeof *pvt);
+	pvt->dns = dns;
+	if (!(gr = memget(sizeof *gr))) {
+		memput(pvt, sizeof *pvt);
+		errno = ENOMEM;
+		return (NULL);
+	}
+	memset(gr, 0x5e, sizeof *gr);
+	gr->private = pvt;
+	gr->next = gr_next;
+	gr->byname = gr_byname;
+	gr->bygid = gr_bygid;
+	gr->rewind = gr_rewind;
+	gr->close = gr_close;
+	gr->list = gr_list;
+	gr->minimize = gr_minimize;
+	gr->res_get = gr_res_get;
+	gr->res_set = gr_res_set;
+	return (gr);
+}
+
+/* methods */
+
+static void
+gr_close(struct irs_gr *this) {
+	struct pvt *pvt = (struct pvt *)this->private;
+
+	if (pvt->group.gr_mem)
+		free(pvt->group.gr_mem);
+	if (pvt->membuf)
+		free(pvt->membuf);
+	memput(pvt, sizeof *pvt);
+	memput(this, sizeof *this);
+}
+
+static struct group *
+gr_next(struct irs_gr *this) {
+
+	UNUSED(this);
+
+	return (NULL);
+}
+
+static struct group *
+gr_byname(struct irs_gr *this, const char *name) {
+	return (get_hes_group(this, name, "group"));
+}
+
+static struct group *
+gr_bygid(struct irs_gr *this, gid_t gid) {
+	char name[32];
+
+	sprintf(name, "%ld", (long)gid);
+	return (get_hes_group(this, name, "gid"));
+}
+
+static void
+gr_rewind(struct irs_gr *this) {
+
+	UNUSED(this);
+
+	/* NOOP */
+}
+
+static int
+gr_list(struct irs_gr *this, const char *name,
+	gid_t basegid, gid_t *groups, int *ngroups)
+{
+	UNUSED(this);
+	UNUSED(name);
+	UNUSED(basegid);
+	UNUSED(groups);
+
+	*ngroups = 0;
+	/* There's some way to do this in Hesiod. */
+	return (-1);
+}
+
+static void
+gr_minimize(struct irs_gr *this) {
+
+	UNUSED(this);
+	/* NOOP */
+}
+
+/* Private. */
+
+static struct group *
+get_hes_group(struct irs_gr *this, const char *name, const char *type) {
+	struct pvt *pvt = (struct pvt *)this->private;
+	char **hes_list, *cp, **new;
+	size_t num_members = 0;
+	u_long t;
+
+	hes_list = hesiod_resolve(pvt->dns->hes_ctx, name, type);
+	if (!hes_list)
+		return (NULL);
+
+	/*
+	 * Copy the returned hesiod string into storage space.
+	 */
+	if (pvt->membuf)
+		free(pvt->membuf);
+	pvt->membuf = strdup(*hes_list);
+	hesiod_free_list(pvt->dns->hes_ctx, hes_list);
+
+	cp = pvt->membuf;
+	pvt->group.gr_name = cp;
+	if (!(cp = strchr(cp, ':')))
+		goto cleanup;
+	*cp++ = '\0';
+	
+	pvt->group.gr_passwd = cp;
+	if (!(cp = strchr(cp, ':')))
+		goto cleanup;
+	*cp++ = '\0';
+
+	errno = 0;
+	t = strtoul(cp, NULL, 10);
+	if (errno == ERANGE)
+		goto cleanup;
+	pvt->group.gr_gid = (gid_t) t;
+	if (!(cp = strchr(cp, ':')))
+		goto cleanup;
+	cp++;
+
+	/*
+	 * Parse the members out.
+	 */
+	while (*cp) {
+		if (num_members+1 >= pvt->nmemb || pvt->group.gr_mem == NULL) {
+			pvt->nmemb += 10;
+			new = realloc(pvt->group.gr_mem,
+				      pvt->nmemb * sizeof(char *));
+			if (new == NULL)
+				goto cleanup;
+			pvt->group.gr_mem = new;
+		}
+		pvt->group.gr_mem[num_members++] = cp;
+		if (!(cp = strchr(cp, ',')))
+			break;
+		*cp++ = '\0';
+	}
+	if (!pvt->group.gr_mem) {
+		pvt->group.gr_mem = malloc(sizeof(char*));
+		if (!pvt->group.gr_mem)
+			goto cleanup;
+	}
+	pvt->group.gr_mem[num_members] = NULL;
+	
+	return (&pvt->group);
+	
+ cleanup:	
+	if (pvt->group.gr_mem) {
+		free(pvt->group.gr_mem);
+		pvt->group.gr_mem = NULL;
+	}
+	if (pvt->membuf) {
+		free(pvt->membuf);
+		pvt->membuf = NULL;
+	}
+	return (NULL);
+}
+
+static struct __res_state *
+gr_res_get(struct irs_gr *this) {
+	struct pvt *pvt = (struct pvt *)this->private;
+	struct dns_p *dns = pvt->dns;
+
+	return (__hesiod_res_get(dns->hes_ctx));
+}
+
+static void
+gr_res_set(struct irs_gr *this, struct __res_state * res,
+	   void (*free_res)(void *)) {
+	struct pvt *pvt = (struct pvt *)this->private;
+	struct dns_p *dns = pvt->dns;
+
+	__hesiod_res_set(dns->hes_ctx, res, free_res);
+}
+
+#endif /* WANT_IRS_GR */