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/*
SSSD
tools_utils.c
Copyright (C) Jakub Hrozek <jhrozek@redhat.com> 2009
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <talloc.h>
#include <tevent.h>
#include <popt.h>
#include "util/util.h"
#include "confdb/confdb.h"
#include "db/sysdb.h"
#include "tools/tools_util.h"
/* Even in LOCAL database, we must enforce MPG. That means enforcing the following rules:
*
* 1. Users and groups must share the same name space. There can never be
* a real group that has the same name of a real user.
* 2. Users and Groups must share the same ID space a group can never have
* a gidNumber that is numerically equal to a uidNumber Otherwise the
* user MPG will conflict with said group.
*/
struct ucheck {
bool done;
bool dup;
int error;
};
void check_unique_callback(void *ptr, int error, struct ldb_result *res)
{
struct ucheck *data = talloc_get_type(ptr, struct ucheck);
data->done = true;
if (error) {
data->error = error;
}
if (res->count != 0) {
data->dup = true;
}
}
int check_user_name_unique(struct tools_ctx *ctx, const char *name)
{
struct ucheck *data;
int ret = EOK;
data = talloc_zero(NULL, struct ucheck);
if (!data) return ENOMEM;
ret = sysdb_getgrnam(data, ctx->sysdb,
"LOCAL", name, false,
check_unique_callback, data);
if (ret != EOK) {
DEBUG(1, ("sysdb_getgrnam failed: %d\n", ret));
goto done;
}
while (!data->done) {
tevent_loop_once(ctx->ev);
}
if (data->error) {
ret = data->error;
goto done;
}
if (data->dup) {
ret = EEXIST;
}
done:
talloc_free(data);
return ret;
}
int check_group_name_unique(struct tools_ctx *ctx, const char *name)
{
struct ucheck *data;
int ret;
data = talloc_zero(NULL, struct ucheck);
if (!data) return ENOMEM;
ret = sysdb_getpwnam(data, ctx->sysdb,
"LOCAL", name, false,
check_unique_callback, data);
if (ret != EOK) {
DEBUG(1, ("sysdb_getgrnam failed: %d\n", ret));
goto done;
}
while (!data->done) {
tevent_loop_once(ctx->ev);
}
if (data->error) {
ret = data->error;
goto done;
}
if (data->dup) {
ret = EEXIST;
}
done:
talloc_free(data);
return ret;
}
int setup_db(struct tools_ctx **tools_ctx)
{
TALLOC_CTX *tmp_ctx;
char *confdb_path;
struct tools_ctx *ctx;
int ret;
ctx = talloc_zero(NULL, struct tools_ctx);
if (ctx == NULL) {
DEBUG(1, ("Could not allocate memory for tools context"));
return ENOMEM;
}
/* Create the event context */
ctx->ev = tevent_context_init(ctx);
if (ctx->ev == NULL) {
DEBUG(1, ("Could not create event context"));
talloc_free(ctx);
return EIO;
}
tmp_ctx = talloc_new(ctx);
if (!tmp_ctx)
return ENOMEM;
confdb_path = talloc_asprintf(tmp_ctx, "%s/%s", DB_PATH, CONFDB_FILE);
if (confdb_path == NULL) {
talloc_free(ctx);
return ENOMEM;
}
/* Connect to the conf db */
ret = confdb_init(ctx, ctx->ev, &ctx->confdb, confdb_path);
if (ret != EOK) {
DEBUG(1, ("Could not initialize connection to the confdb"));
talloc_free(ctx);
return ret;
}
ret = confdb_get_domains(ctx->confdb, ctx, &ctx->domains);
if (ret != EOK) {
DEBUG(1, ("Could not get domains"));
talloc_free(ctx);
return ret;
}
/* open sysdb at default path */
ret = sysdb_init(ctx, ctx->ev, ctx->confdb, NULL, &ctx->sysdb);
if (ret != EOK) {
DEBUG(1, ("Could not initialize connection to the sysdb"));
talloc_free(ctx);
return ret;
}
talloc_free(tmp_ctx);
*tools_ctx = ctx;
return EOK;
}
/*
* Print poptUsage as well as our error message
*/
void usage(poptContext pc, const char *error)
{
poptPrintUsage(pc, stderr, 0);
if (error) fprintf(stderr, "%s", error);
}
/* FIXME: avoid using strtok !! */
int parse_groups(TALLOC_CTX *mem_ctx, const char *optstr, char ***_out)
{
char **out;
char *orig, *n, *o;
char delim = ',';
unsigned int tokens = 1;
int i;
orig = talloc_strdup(mem_ctx, optstr);
if (!orig) return ENOMEM;
n = orig;
tokens = 1;
while ((n = strchr(n, delim))) {
n++;
tokens++;
}
out = talloc_array(mem_ctx, char *, tokens+1);
if (!out) {
talloc_free(orig);
return ENOMEM;
}
n = orig;
for (i = 0; i < tokens; i++) {
o = n;
n = strchr(n, delim);
if (!n) {
break;
}
*n = '\0';
n++;
out[i] = talloc_strdup(out, o);
}
out[tokens-1] = talloc_strdup(out, o);
out[tokens] = NULL;
talloc_free(orig);
*_out = out;
return EOK;
}
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