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/*
SSSD
sss_userdel
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 <stdio.h>
#include <stdlib.h>
#include <talloc.h>
#include <popt.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <pwd.h>
#include "db/sysdb.h"
#include "util/util.h"
#include "tools/tools_util.h"
#ifndef USERDEL
#define USERDEL SHADOW_UTILS_PATH"/userdel "
#endif
#ifndef USERDEL_USERNAME
#define USERDEL_USERNAME "%s "
#endif
struct user_del_ctx {
struct sysdb_req *sysreq;
sysdb_callback_t next_fn;
uid_t uid;
const char *username;
struct ldb_dn *user_dn;
struct sss_domain_info *domain;
struct tools_ctx *ctx;
int error;
bool done;
};
/* sysdb callback */
static void userdel_done(void *pvt, int error, struct ldb_result *ignore)
{
struct user_del_ctx *data = talloc_get_type(pvt, struct user_del_ctx);
data->done = true;
sysdb_transaction_done(data->sysreq, error);
if (error)
data->error = error;
}
/* sysdb_req_fn_t */
static void user_del(struct sysdb_req *req, void *pvt)
{
struct user_del_ctx *user_ctx;
int ret;
user_ctx = talloc_get_type(pvt, struct user_del_ctx);
user_ctx->sysreq = req;
ret = sysdb_delete_entry(req,
user_ctx->user_dn,
userdel_done,
user_ctx);
if(ret != EOK)
userdel_done(user_ctx, ret, NULL);
}
static int userdel_legacy(struct user_del_ctx *ctx)
{
int ret = EOK;
char *command = NULL;
APPEND_STRING(command, USERDEL);
APPEND_PARAM(command, USERDEL_USERNAME, ctx->username);
ret = system(command);
if (ret) {
if (ret == -1) {
DEBUG(0, ("system(3) failed\n"));
} else {
DEBUG(0,("Could not exec '%s', return code: %d\n", command, WEXITSTATUS(ret)));
}
talloc_free(command);
return EFAULT;
}
talloc_free(command);
return ret;
}
int main(int argc, const char **argv)
{
int ret = EXIT_SUCCESS;
struct user_del_ctx *user_ctx = NULL;
struct tools_ctx *ctx = NULL;
struct sss_domain_info *dom;
struct passwd *pwd_info;
int pc_debug = 0;
poptContext pc = NULL;
struct poptOption long_options[] = {
POPT_AUTOHELP
{ "debug", '\0', POPT_ARG_INT | POPT_ARGFLAG_DOC_HIDDEN, &pc_debug, 0, "The debug level to run with", NULL },
POPT_TABLEEND
};
debug_prg_name = argv[0];
ret = setup_db(&ctx);
if(ret != EOK) {
DEBUG(0, ("Could not set up database\n"));
ret = EXIT_FAILURE;
goto fini;
}
user_ctx = talloc_zero(NULL, struct user_del_ctx);
if (user_ctx == NULL) {
DEBUG(0, ("Could not allocate memory for user_ctx context\n"));
return ENOMEM;
}
user_ctx->ctx = ctx;
/* parse user_ctx */
pc = poptGetContext(NULL, argc, argv, long_options, 0);
poptSetOtherOptionHelp(pc, "USERNAME");
if((ret = poptGetNextOpt(pc)) < -1) {
usage(pc, poptStrerror(ret));
ret = EXIT_FAILURE;
goto fini;
}
debug_level = pc_debug;
user_ctx->username = poptGetArg(pc);
if(user_ctx->username == NULL) {
usage(pc, "Specify user to delete\n");
ret = EXIT_FAILURE;
goto fini;
}
/* arguments processed, go on to actual work */
pwd_info = getpwnam(user_ctx->username);
if (pwd_info) {
user_ctx->uid = pwd_info->pw_uid;
}
ret = find_domain_for_id(ctx, user_ctx->uid, &dom);
switch (ret) {
case ID_IN_LOCAL:
user_ctx->domain = dom;
break;
case ID_IN_LEGACY_LOCAL:
user_ctx->domain = dom;
case ID_OUTSIDE:
ret = userdel_legacy(user_ctx);
break; /* Also delete possible cached entries in sysdb */
case ID_IN_OTHER:
DEBUG(0, ("Cannot delete user from domain %s\n", dom->name));
ret = EXIT_FAILURE;
goto fini;
default:
DEBUG(0, ("Unknown return code from find_domain_for_id"));
ret = EXIT_FAILURE;
goto fini;
}
user_ctx->user_dn = sysdb_user_dn(ctx->sysdb, ctx,
user_ctx->domain->name,
user_ctx->username);
if(user_ctx->user_dn == NULL) {
DEBUG(0, ("Could not construct an user DN\n"));
ret = EXIT_FAILURE;
goto fini;
}
/* userdel */
ret = sysdb_transaction(ctx, ctx->sysdb, user_del, user_ctx);
if(ret != EOK) {
DEBUG(1, ("Could not start transaction (%d)[%s]\n", ret, strerror(ret)));
ret = EXIT_FAILURE;
goto fini;
}
while (!user_ctx->done) {
tevent_loop_once(ctx->ev);
}
if (user_ctx->error) {
ret = user_ctx->error;
DEBUG(0, ("Operation failed (%d)[%s]\n", ret, strerror(ret)));
ret = EXIT_FAILURE;
goto fini;
}
ret = EXIT_SUCCESS;
fini:
talloc_free(ctx);
talloc_free(user_ctx);
poptFreeContext(pc);
exit(ret);
}
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