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/*
Unix SMB/CIFS implementation.
Low-level connections.tdb access functions
Copyright (C) Volker Lendecke 2007
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 "includes.h"
#include "system/filesys.h"
#include "smbd/globals.h"
#include "dbwrap/dbwrap.h"
#include "dbwrap/dbwrap_open.h"
#include "dbwrap/dbwrap_rbt.h"
#include "messages.h"
#include "conn_tdb.h"
#include "util_tdb.h"
#include "lib/util/string_wrappers.h"
#include "../libcli/security/session.h"
struct connections_forall_state {
struct db_context *session_by_pid;
int (*fn)(const struct connections_data *data,
void *private_data);
void *private_data;
int count;
};
struct connections_forall_session {
uid_t uid;
gid_t gid;
fstring machine;
fstring addr;
uint16_t cipher;
uint16_t dialect;
uint16_t signing;
bool authenticated;
};
static int collect_sessions_fn(struct smbXsrv_session_global0 *global,
void *connections_forall_state)
{
NTSTATUS status;
struct connections_forall_state *state =
(struct connections_forall_state*)connections_forall_state;
uint32_t id = global->session_global_id;
struct connections_forall_session sess;
enum security_user_level ul;
if (global->auth_session_info == NULL) {
sess.uid = -1;
sess.gid = -1;
} else {
sess.uid = global->auth_session_info->unix_token->uid;
sess.gid = global->auth_session_info->unix_token->gid;
}
fstrcpy(sess.machine, global->channels[0].remote_name);
fstrcpy(sess.addr, global->channels[0].remote_address);
sess.cipher = global->channels[0].encryption_cipher;
sess.signing = global->channels[0].signing_algo;
sess.dialect = global->connection_dialect;
ul = security_session_user_level(global->auth_session_info, NULL);
if (ul >= SECURITY_USER) {
sess.authenticated = true;
} else {
sess.authenticated = false;
}
status = dbwrap_store(state->session_by_pid,
make_tdb_data((void*)&id, sizeof(id)),
make_tdb_data((void*)&sess, sizeof(sess)),
TDB_INSERT);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0, ("Failed to store record: %s\n", nt_errstr(status)));
}
return 0;
}
static int traverse_tcon_fn(struct smbXsrv_tcon_global0 *global,
void *connections_forall_state)
{
NTSTATUS status;
struct connections_forall_state *state =
(struct connections_forall_state*)connections_forall_state;
struct connections_data data;
uint32_t sess_id = global->session_global_id;
struct connections_forall_session sess = {
.uid = -1,
.gid = -1,
};
TDB_DATA val = tdb_null;
/*
* Note: that share_name is defined as array without a pointer.
* that's why it's always a valid pointer here.
*/
if (strlen(global->share_name) == 0) {
/*
* when a smbXsrv_tcon is created it's created
* with empty share_name first in order to allocate
* an id, before filling in the details.
*/
return 0;
}
status = dbwrap_fetch(state->session_by_pid, state,
make_tdb_data((void*)&sess_id, sizeof(sess_id)),
&val);
if (NT_STATUS_IS_OK(status)) {
memcpy((uint8_t *)&sess, val.dptr, val.dsize);
}
ZERO_STRUCT(data);
data.pid = global->server_id;
data.cnum = global->tcon_global_id;
data.sess_id = sess_id;
fstrcpy(data.servicename, global->share_name);
data.uid = sess.uid;
data.gid = sess.gid;
fstrcpy(data.addr, sess.addr);
fstrcpy(data.machine, sess.machine);
data.start = global->creation_time;
data.encryption_flags = global->encryption_flags;
data.cipher = sess.cipher;
data.dialect = sess.dialect;
data.signing = sess.signing;
data.signing_flags = global->signing_flags;
data.authenticated = sess.authenticated;
state->count++;
return state->fn(&data, state->private_data);
}
int connections_forall_read(int (*fn)(const struct connections_data *data,
void *private_data),
void *private_data)
{
TALLOC_CTX *frame = talloc_stackframe();
struct connections_forall_state *state =
talloc_zero(talloc_tos(), struct connections_forall_state);
NTSTATUS status;
int ret = -1;
state->session_by_pid = db_open_rbt(state);
state->fn = fn;
state->private_data = private_data;
status = smbXsrv_session_global_traverse(collect_sessions_fn, state);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0, ("Failed to traverse sessions: %s\n",
nt_errstr(status)));
goto done;
}
status = smbXsrv_tcon_global_traverse(traverse_tcon_fn, state);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0, ("Failed to traverse tree connects: %s\n",
nt_errstr(status)));
goto done;
}
ret = state->count;
done:
talloc_free(frame);
return ret;
}
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