source3/lib/conn_tdb.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Low-level connections.tdb access functions
   4    Copyright (C) Volker Lendecke 2007
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include "includes.h"
  21 #include "system/filesys.h"
  22 #include "smbd/globals.h"
  23 #include "dbwrap/dbwrap.h"
  24 #include "dbwrap/dbwrap_open.h"
  25 #include "dbwrap/dbwrap_rbt.h"
  26 #include "messages.h"
  27 #include "lib/conn_tdb.h"
  28 #include "util_tdb.h"
  29
  30 struct connections_forall_state {
  31         struct db_context *session_by_pid;
  32         int (*fn)(const struct connections_key *key,
  33                   const struct connections_data *data,
  34                   void *private_data);
  35         void *private_data;
  36         int count;
  37 };
  38
  39 struct connections_forall_session {
  40         uid_t uid;
  41         gid_t gid;
  42         char machine[FSTRING_LEN];
  43         char addr[FSTRING_LEN];
  44 };
  45
  46 static int collect_sessions_fn(struct smbXsrv_session_global0 *global,
  47                                void *connections_forall_state)
  48 {
  49         NTSTATUS status;
  50         struct connections_forall_state *state =
  51                 (struct connections_forall_state*)connections_forall_state;
  52
  53         uint32_t id = global->session_global_id;
  54         struct connections_forall_session sess;
  55
  56         sess.uid = global->auth_session_info->unix_token->uid;
  57         sess.gid = global->auth_session_info->unix_token->gid;
  58         strncpy(sess.machine, global->channels[0].remote_name, sizeof(sess.machine));
  59         strncpy(sess.addr, global->channels[0].remote_address, sizeof(sess.addr));
  60
  61         status = dbwrap_store(state->session_by_pid,
  62                               make_tdb_data((void*)&id, sizeof(id)),
  63                               make_tdb_data((void*)&sess, sizeof(sess)),
  64                               TDB_INSERT);
  65         if (!NT_STATUS_IS_OK(status)) {
  66                 DEBUG(0, ("Failed to store record: %s\n", nt_errstr(status)));
  67         }
  68         return 0;
  69 }
  70
  71 static int traverse_tcon_fn(struct smbXsrv_tcon_global0 *global,
  72                             void *connections_forall_state)
  73 {
  74         NTSTATUS status;
  75         struct connections_forall_state *state =
  76                 (struct connections_forall_state*)connections_forall_state;
  77
  78         struct connections_key key;
  79         struct connections_data data;
  80
  81         uint32_t sess_id = global->session_global_id;
  82         struct connections_forall_session sess = {
  83                 .uid = -1,
  84                 .gid = -1,
  85         };
  86
  87         TDB_DATA val = tdb_null;
  88
  89         status = dbwrap_fetch(state->session_by_pid, state,
  90                               make_tdb_data((void*)&sess_id, sizeof(sess_id)),
  91                               &val);
  92         if (NT_STATUS_IS_OK(status)) {
  93                 memcpy((uint8_t *)&sess, val.dptr, val.dsize);
  94         }
  95
  96         ZERO_STRUCT(key);
  97         ZERO_STRUCT(data);
  98
  99         key.pid = data.pid = global->server_id;
 100         key.cnum = data.cnum = global->tcon_global_id;
 101         strncpy(key.name, global->share_name, sizeof(key.name));
 102         strncpy(data.servicename, global->share_name, sizeof(data.servicename));
 103         data.uid = sess.uid;
 104         data.gid = sess.gid;
 105         strncpy(data.addr, sess.addr, sizeof(data.addr));
 106         strncpy(data.machine, sess.machine, sizeof(data.machine));
 107         data.start = nt_time_to_unix(global->creation_time);
 108
 109         state->count++;
 110
 111         return state->fn(&key, &data, state->private_data);
 112 }
 113
 114 int connections_forall_read(int (*fn)(const struct connections_key *key,
 115                                       const struct connections_data *data,
 116                                       void *private_data),
 117                             void *private_data)
 118 {
 119         TALLOC_CTX *frame = talloc_stackframe();
 120         struct connections_forall_state *state =
 121                 talloc_zero(talloc_tos(), struct connections_forall_state);
 122         NTSTATUS status;
 123         int ret = -1;
 124
 125         state->session_by_pid = db_open_rbt(state);
 126         state->fn = fn;
 127         state->private_data = private_data;
 128         status = smbXsrv_session_global_traverse(collect_sessions_fn, state);
 129         if (!NT_STATUS_IS_OK(status)) {
 130                 DEBUG(0, ("Failed to traverse sessions: %s\n",
 131                           nt_errstr(status)));
 132                 goto done;
 133         }
 134
 135         status = smbXsrv_tcon_global_traverse(traverse_tcon_fn, state);
 136         if (!NT_STATUS_IS_OK(status)) {
 137                 DEBUG(0, ("Failed to traverse tree connects: %s\n",
 138                           nt_errstr(status)));
 139                 goto done;
 140         }
 141         ret = state->count;
 142 done:
 143         talloc_free(frame);
 144         return ret;
 145 }
 146