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-rw-r--r--lib/bind/irs/irp_gr.c357
1 files changed, 357 insertions, 0 deletions
diff --git a/lib/bind/irs/irp_gr.c b/lib/bind/irs/irp_gr.c
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+/*
+ * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
+ * Portions Copyright(c) 1996, 1998 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: irp_gr.c,v 1.3.18.1 2005/04/27 05:01:00 sra Exp $";
+#endif /* LIBC_SCCS and not lint */
+
+/* extern */
+
+#include "port_before.h"
+
+#ifndef WANT_IRS_PW
+static int __bind_irs_gr_unneeded;
+#else
+
+#include <syslog.h>
+#include <sys/param.h>
+#include <sys/types.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <grp.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <syslog.h>
+
+#include <irs.h>
+#include <irp.h>
+#include <isc/memcluster.h>
+#include <isc/irpmarshall.h>
+
+#include "irs_p.h"
+#include "lcl_p.h"
+#include "irp_p.h"
+
+#include "port_after.h"
+
+
+/* Types. */
+
+/*! \file
+ * \brief
+ * Module for the getnetgrent(3) family to use when connected to a
+ * remote irp daemon.
+ * \brief
+ * See irpd.c for justification of caching done here.
+ *
+ */
+
+struct pvt {
+ struct irp_p *girpdata; /*%< global IRP data */
+ int warned;
+ struct group group;
+};
+
+/* Forward. */
+
+static void gr_close(struct irs_gr *);
+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_minimize(struct irs_gr *);
+
+/* Private */
+static void free_group(struct group *gr);
+
+
+/* Public. */
+
+/*%
+ * Initialize the group sub-module.
+ *
+ */
+
+struct irs_gr *
+irs_irp_gr(struct irs_acc *this) {
+ struct irs_gr *gr;
+ struct pvt *pvt;
+
+ if (!(gr = memget(sizeof *gr))) {
+ errno = ENOMEM;
+ return (NULL);
+ }
+ memset(gr, 0x0, sizeof *gr);
+
+ if (!(pvt = memget(sizeof *pvt))) {
+ memput(gr, sizeof *gr);
+ errno = ENOMEM;
+ return (NULL);
+ }
+ memset(pvt, 0x0, sizeof *pvt);
+ pvt->girpdata = this->private;
+
+ gr->private = pvt;
+ gr->close = gr_close;
+ gr->next = gr_next;
+ gr->byname = gr_byname;
+ gr->bygid = gr_bygid;
+ gr->rewind = gr_rewind;
+ gr->list = make_group_list;
+ gr->minimize = gr_minimize;
+ return (gr);
+}
+
+/* Methods. */
+
+/*%
+ * Close the sub-module.
+ *
+ */
+
+static void
+gr_close(struct irs_gr *this) {
+ struct pvt *pvt = (struct pvt *)this->private;
+
+ gr_minimize(this);
+
+ memput(pvt, sizeof *pvt);
+ memput(this, sizeof *this);
+}
+
+/*%
+ * Gets the next group out of the cached data and returns it.
+ *
+ */
+
+static struct group *
+gr_next(struct irs_gr *this) {
+ struct pvt *pvt = (struct pvt *)this->private;
+ struct group *gr = &pvt->group;
+ char *body;
+ size_t bodylen;
+ int code;
+ char text[256];
+
+ if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) {
+ return (NULL);
+ }
+
+ if (irs_irp_send_command(pvt->girpdata, "getgrent") != 0) {
+ return (NULL);
+ }
+
+ if (irs_irp_get_full_response(pvt->girpdata, &code,
+ text, sizeof text,
+ &body, &bodylen) != 0) {
+ if (irp_log_errors) {
+ syslog(LOG_WARNING, "getgrent failed: %s", text);
+ }
+ return (NULL);
+ }
+
+ if (code == IRPD_GETGROUP_OK) {
+ free_group(gr);
+ if (irp_unmarshall_gr(gr, body) != 0) {
+ gr = NULL;
+ }
+ } else {
+ gr = NULL;
+ }
+
+ if (body != NULL) {
+ memput(body, bodylen);
+ }
+
+ return (gr);
+}
+
+/*%
+ * Gets a group by name from irpd and returns it.
+ *
+ */
+
+static struct group *
+gr_byname(struct irs_gr *this, const char *name) {
+ struct pvt *pvt = (struct pvt *)this->private;
+ struct group *gr = &pvt->group;
+ char *body;
+ size_t bodylen;
+ int code;
+ char text[256];
+
+
+ if (gr->gr_name != NULL && strcmp(name, gr->gr_name) == 0) {
+ return (gr);
+ }
+
+ if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) {
+ return (NULL);
+ }
+
+ if (irs_irp_send_command(pvt->girpdata, "getgrnam %s", name) != 0)
+ return (NULL);
+
+ if (irs_irp_get_full_response(pvt->girpdata, &code,
+ text, sizeof text,
+ &body, &bodylen) != 0) {
+ return (NULL);
+ }
+
+ if (code == IRPD_GETGROUP_OK) {
+ free_group(gr);
+ if (irp_unmarshall_gr(gr, body) != 0) {
+ gr = NULL;
+ }
+ } else {
+ gr = NULL;
+ }
+
+ if (body != NULL) {
+ memput(body, bodylen);
+ }
+
+ return (gr);
+}
+
+/*%
+ * Gets a group by gid from irpd and returns it.
+ *
+ */
+
+static struct group *
+gr_bygid(struct irs_gr *this, gid_t gid) {
+ struct pvt *pvt = (struct pvt *)this->private;
+ struct group *gr = &pvt->group;
+ char *body;
+ size_t bodylen;
+ int code;
+ char text[256];
+
+ if (gr->gr_name != NULL && (gid_t)gr->gr_gid == gid) {
+ return (gr);
+ }
+
+ if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) {
+ return (NULL);
+ }
+
+ if (irs_irp_send_command(pvt->girpdata, "getgrgid %d", gid) != 0)
+ return (NULL);
+
+ if (irs_irp_get_full_response(pvt->girpdata, &code,
+ text, sizeof text,
+ &body, &bodylen) != 0) {
+ return (NULL);
+ }
+
+ if (code == IRPD_GETGROUP_OK) {
+ free_group(gr);
+ if (irp_unmarshall_gr(gr, body) != 0) {
+ gr = NULL;
+ }
+ } else {
+ gr = NULL;
+ }
+
+ if (body != NULL) {
+ memput(body, bodylen);
+ }
+
+ return (gr);
+}
+
+/*%
+ * void gr_rewind(struct irs_gr *this)
+ *
+ */
+
+static void
+gr_rewind(struct irs_gr *this) {
+ struct pvt *pvt = (struct pvt *)this->private;
+ char text[256];
+ int code;
+
+ if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) {
+ return;
+ }
+
+ if (irs_irp_send_command(pvt->girpdata, "setgrent") != 0) {
+ return;
+ }
+
+ code = irs_irp_read_response(pvt->girpdata, text, sizeof text);
+ if (code != IRPD_GETGROUP_SETOK) {
+ if (irp_log_errors) {
+ syslog(LOG_WARNING, "setgrent failed: %s", text);
+ }
+ }
+
+ return;
+}
+
+/*%
+ * Frees up cached data and disconnects(if necessary) from the remote.
+ *
+ */
+
+static void
+gr_minimize(struct irs_gr *this) {
+ struct pvt *pvt = (struct pvt *)this->private;
+
+ free_group(&pvt->group);
+ irs_irp_disconnect(pvt->girpdata);
+}
+
+/* Private. */
+
+/*%
+ * static void free_group(struct group *gr);
+ *
+ * Deallocate all the memory irp_unmarshall_gr allocated.
+ *
+ */
+
+static void
+free_group(struct group *gr) {
+ char **p;
+
+ if (gr == NULL)
+ return;
+
+ if (gr->gr_name != NULL)
+ free(gr->gr_name);
+
+ if (gr->gr_passwd != NULL)
+ free(gr->gr_passwd);
+
+ for (p = gr->gr_mem ; p != NULL && *p != NULL ; p++)
+ free(*p);
+
+ if (gr->gr_mem)
+ free(gr->gr_mem);
+
+ if (p != NULL)
+ free(p);
+}
+
+
+#endif /* WANT_IRS_GR */
+/*! \file */
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