9735 Need to provide SMB 2.1 Client

Reviewed by: Evan Layton <evan.layton@nexenta.com>
Reviewed by: Matt Barden <matt.barden@nexenta.com>
Reviewed by: Rick McNeal <rick.mcneal@nexenta.com>
Reviewed by: Saso Kiselkov <saso.kiselkov@nexenta.com>
Reviewed by: Joyce McIntosh <joyce.mcintosh@nexenta.com>
Approved by: Joshua M. Clulow <josh@sysmgr.org>

1 files changed, 231 insertions, 0 deletions

diff --git a/usr/src/lib/libsmbfs/smb/rc_scf.c b/usr/src/lib/libsmbfs/smb/rc_scf.c
new file mode 100644
index 0000000000..477982c0c8
--- /dev/null
+++ b/usr/src/lib/libsmbfs/smb/rc_scf.c
@@ -0,0 +1,231 @@
+/*
+ * This file and its contents are supplied under the terms of the
+ * Common Development and Distribution License ("CDDL"), version 1.0.
+ * You may only use this file in accordance with the terms of version
+ * 1.0 of the CDDL.
+ *
+ * A full copy of the text of the CDDL should have accompanied this
+ * source.  A copy of the CDDL is also available via the Internet at
+ * http://www.illumos.org/license/CDDL.
+ */
+
+/*
+ * Copyright 2018 Nexenta Systems, Inc.  All rights reserved.
+ */
+
+/*
+ * Support functions for getting things libsmbfs needs
+ * from the SMF configuration (using libscf).
+ */
+
+#include <sys/types.h>
+#include <sys/queue.h>
+
+#include <ctype.h>
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+#include <strings.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <libscf.h>
+
+#include <cflib.h>
+#include "rcfile_priv.h"
+
+#define	IDMAP_SERVICE_FMRI		"svc:/system/idmap"
+#define	IDMAP_PG_NAME			"config"
+#define	MACHINE_UUID			"machine_uuid"
+
+#define	SMBC_DEFAULT_INSTANCE_FMRI	"svc:/network/smb/client:default"
+
+scf_handle_t *_scf_handle_create_and_bind(scf_version_t ver);
+
+/*
+ * Get the "machine_uuid" from idmap, as a string (allocated)
+ */
+char *
+cf_get_client_uuid(void)
+{
+	char val_buf[64];
+	char *ret = NULL;
+
+	scf_handle_t		*h = NULL;
+	scf_service_t		*svc = NULL;
+	scf_propertygroup_t	*pg = NULL;
+	scf_property_t		*prop = NULL;
+	scf_value_t		*val = NULL;
+
+	if ((h = _scf_handle_create_and_bind(SCF_VERSION)) == NULL)
+		goto out;
+
+	if ((svc = scf_service_create(h)) == NULL ||
+	    (pg = scf_pg_create(h)) == NULL ||
+	    (prop = scf_property_create(h)) == NULL ||
+	    (val = scf_value_create(h)) == NULL)
+		goto out;
+
+	if (scf_handle_decode_fmri(h, IDMAP_SERVICE_FMRI,
+	    NULL, svc, NULL, NULL, NULL, 0) == -1)
+		goto out;
+
+
+	if (scf_service_get_pg(svc, IDMAP_PG_NAME, pg) != 0)
+		goto out;
+	if (scf_pg_get_property(pg, MACHINE_UUID, prop) != 0)
+		goto out;
+	if (scf_property_get_value(prop, val) != 0)
+		goto out;
+	if (scf_value_get_as_string(val, val_buf, sizeof (val_buf)) < 0)
+		goto out;
+
+	ret = strdup(val_buf);
+
+out:
+	scf_value_destroy(val);
+	scf_property_destroy(prop);
+	scf_pg_destroy(pg);
+	scf_service_destroy(svc);
+
+	if (h != NULL)
+		scf_handle_destroy(h);
+
+	return (ret);
+}
+
+/*
+ * Get the output of "sharectl get smbfs" into a file, without an
+ * actual fork/exec of sharectl.
+ *
+ * Each section of the smbfs settings are represented as an SMF
+ * property group with an "S-" prefix and a UUID, and the section
+ * name itself a property which can have a more flexible name than
+ * a property group name can have.
+ */
+int
+rc_scf_get_sharectl(FILE *fp)
+{
+	char sect_name[256];
+	char prop_name[256];
+	char val_buf[1024];
+
+	scf_handle_t		*h = NULL;
+	scf_service_t		*svc = NULL;
+	scf_instance_t		*inst = NULL;
+	scf_propertygroup_t	*pg = NULL;
+	scf_property_t		*prop = NULL;
+	scf_value_t		*val = NULL;
+	scf_iter_t		*pgiter = NULL;
+	scf_iter_t		*propiter = NULL;
+	scf_iter_t		*valiter = NULL;
+	int ret = -1;
+
+	if ((h = _scf_handle_create_and_bind(SCF_VERSION)) == NULL)
+		goto out;
+
+	if ((svc = scf_service_create(h)) == NULL ||
+	    (inst = scf_instance_create(h)) == NULL ||
+	    (pgiter = scf_iter_create(h)) == NULL ||
+	    (propiter = scf_iter_create(h)) == NULL ||
+	    (valiter = scf_iter_create(h)) == NULL ||
+	    (pg = scf_pg_create(h)) == NULL ||
+	    (prop = scf_property_create(h)) == NULL ||
+	    (val = scf_value_create(h)) == NULL)
+		goto out;
+
+	if (scf_handle_decode_fmri(h, SMBC_DEFAULT_INSTANCE_FMRI,
+	    NULL, svc, inst, NULL, NULL, 0) == -1)
+		goto out;
+
+	if (scf_iter_instance_pgs_composed(pgiter, inst, NULL) == -1)
+		goto out;
+	while ((ret = scf_iter_next_pg(pgiter, pg)) == 1) {
+		/*
+		 * Using prop_name array for pg name temporarily.
+		 * Skip any property groups names other than "S-*".
+		 */
+		if (scf_pg_get_name(pg, prop_name, sizeof (prop_name)) < 0)
+			continue;
+		if (strncmp(prop_name, "S-", 2) != 0)
+			continue;
+
+		/*
+		 * Get the "section" name, which is a property of
+		 * this property group.
+		 */
+		if (scf_pg_get_property(pg, "section", prop) != 0)
+			continue;
+		if (scf_property_get_value(prop, val) != 0)
+			continue;
+		if (scf_value_get_as_string(val, sect_name,
+		    sizeof (sect_name)) < 0)
+			continue;
+
+		/*
+		 * Have an S-* property group with a "section" name.
+		 * Print the section start.
+		 */
+		fprintf(fp, "[%s]\n", sect_name);
+
+		/*
+		 * Now print the remaining properties in this PG,
+		 * but skip the special "section" (name) prop.
+		 */
+		if (scf_iter_pg_properties(propiter, pg) == -1)
+			goto out;
+		while ((ret = scf_iter_next_property(propiter, prop)) == 1) {
+
+			if (scf_property_get_name(prop, prop_name,
+			    sizeof (prop_name)) < 0)
+				continue;
+
+			/* Skip the "section" prop. now */
+			if (strcmp(prop_name, "section") == 0)
+				continue;
+
+			if (scf_property_get_value(prop, val) != 0)
+				continue;
+
+			if (scf_value_get_as_string(val, val_buf,
+			    sizeof (val_buf)) < 0)
+				continue;
+
+			fprintf(fp, "%s=%s\n", prop_name, val_buf);
+		}
+	}
+	ret = 0;
+
+out:
+	fflush(fp);
+
+	scf_value_destroy(val);
+	scf_property_destroy(prop);
+	scf_pg_destroy(pg);
+	scf_iter_destroy(valiter);
+	scf_iter_destroy(propiter);
+	scf_iter_destroy(pgiter);
+	scf_instance_destroy(inst);
+	scf_service_destroy(svc);
+
+	if (h != NULL)
+		scf_handle_destroy(h);
+
+	return (ret);
+}
+
+/*
+ * Simple test wrapper.  Compile with:
+ * cc -o rc_scf_test -I.. -DTEST_MAIN rc_scf.c -lscf
+ */
+#ifdef	TEST_MAIN
+int
+main(int argc, char **arv)
+{
+	char *s;
+	int rc;
+
+	rc = rc_scf_get_sharectl(stdout);
+	printf("# rc=%d\n", rc);
+	return (0);
+}
+#endif	/* TEST_MAIN */