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/*
* 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 */
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