465 lines
12 KiB
C
465 lines
12 KiB
C
/* Simple HLR/VLR database backend using dbi */
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/* (C) 2008 by Jan Luebbe <jluebbe@debian.org>
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* (C) 2009 by Holger Hans Peter Freyther <zecke@selfish.org>
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* All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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*/
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#include <openbsc/gsm_data.h>
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#include <openbsc/db.h>
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#include <libgen.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <dbi/dbi.h>
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static char *db_basename = NULL;
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static char *db_dirname = NULL;
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static dbi_conn conn;
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static char *create_stmts[] = {
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"CREATE TABLE IF NOT EXISTS Meta ("
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"id INTEGER PRIMARY KEY AUTOINCREMENT, "
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"key TEXT UNIQUE NOT NULL, "
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"value TEXT NOT NULL"
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")",
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"INSERT OR IGNORE INTO Meta "
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"(key, value) "
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"VALUES "
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"('revision', '1')",
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"CREATE TABLE IF NOT EXISTS Subscriber ("
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"id INTEGER PRIMARY KEY AUTOINCREMENT, "
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"created TIMESTAMP NOT NULL, "
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"updated TIMESTAMP NOT NULL, "
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"imsi NUMERIC UNIQUE NOT NULL, "
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"name TEXT, "
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"extension TEXT UNIQUE, "
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"authorized INTEGER NOT NULL DEFAULT 0, "
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"tmsi TEXT UNIQUE, "
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"lac INTEGER NOT NULL DEFAULT 0"
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")",
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"CREATE TABLE IF NOT EXISTS Equipment ("
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"id INTEGER PRIMARY KEY AUTOINCREMENT, "
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"created TIMESTAMP NOT NULL, "
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"updated TIMESTAMP NOT NULL, "
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"name TEXT, "
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"imei NUMERIC UNIQUE NOT NULL"
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")",
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"CREATE TABLE IF NOT EXISTS EquipmentWatch ("
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"id INTEGER PRIMARY KEY AUTOINCREMENT, "
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"created TIMESTAMP NOT NULL, "
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"updated TIMESTAMP NOT NULL, "
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"subscriber_id NUMERIC NOT NULL, "
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"equipment_id NUMERIC NOT NULL, "
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"UNIQUE (subscriber_id, equipment_id) "
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")",
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"CREATE TABLE IF NOT EXISTS SMS ("
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"id INTEGER PRIMARY KEY AUTOINCREMENT, "
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"created TIMESTAMP NOT NULL, "
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"sent TIMESTAMP, "
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"sender_id NUMERIC NOT NULL, "
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"receiver_id NUMERIC NOT NULL, "
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"header NUMERIC, "
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"text TEXT NOT NULL "
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")",
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"CREATE TABLE IF NOT EXISTS VLR ("
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"id INTEGER PRIMARY KEY AUTOINCREMENT, "
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"created TIMESTAMP NOT NULL, "
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"updated TIMESTAMP NOT NULL, "
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"subscriber_id NUMERIC UNIQUE NOT NULL, "
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"last_bts NUMERIC NOT NULL "
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")",
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};
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void db_error_func(dbi_conn conn, void* data) {
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const char* msg;
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dbi_conn_error(conn, &msg);
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printf("DBI: %s\n", msg);
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}
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int db_init(const char *name) {
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dbi_initialize(NULL);
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conn = dbi_conn_new("sqlite3");
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if (conn==NULL) {
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printf("DB: Failed to create connection.\n");
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return 1;
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}
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dbi_conn_error_handler( conn, db_error_func, NULL );
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/* MySQL
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dbi_conn_set_option(conn, "host", "localhost");
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dbi_conn_set_option(conn, "username", "your_name");
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dbi_conn_set_option(conn, "password", "your_password");
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dbi_conn_set_option(conn, "dbname", "your_dbname");
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dbi_conn_set_option(conn, "encoding", "UTF-8");
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*/
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/* SqLite 3 */
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db_basename = strdup(name);
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db_dirname = strdup(name);
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dbi_conn_set_option(conn, "sqlite3_dbdir", dirname(db_dirname));
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dbi_conn_set_option(conn, "dbname", basename(db_basename));
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if (dbi_conn_connect(conn) < 0) {
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free(db_dirname);
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free(db_basename);
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db_dirname = db_basename = NULL;
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return 1;
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}
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return 0;
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}
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int db_prepare() {
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dbi_result result;
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int i;
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for (i = 0; i < ARRAY_SIZE(create_stmts); i++) {
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result = dbi_conn_query(conn, create_stmts[i]);
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if (result==NULL) {
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printf("DB: Failed to create some table.\n");
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return 1;
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}
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dbi_result_free(result);
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}
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return 0;
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}
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int db_fini() {
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dbi_conn_close(conn);
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dbi_shutdown();
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if (db_dirname)
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free(db_dirname);
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if (db_basename)
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free(db_basename);
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return 0;
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}
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struct gsm_subscriber* db_create_subscriber(char *imsi) {
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dbi_result result;
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struct gsm_subscriber* subscr;
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/* Is this subscriber known in the db? */
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subscr = db_get_subscriber(GSM_SUBSCRIBER_IMSI, imsi);
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if (subscr) {
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result = dbi_conn_queryf(conn,
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"UPDATE Subscriber set updated = datetime('now') "
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"WHERE imsi = %s " , imsi);
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if (result==NULL) {
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printf("DB: failed to update timestamp\n");
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} else {
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dbi_result_free(result);
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}
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return subscr;
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}
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subscr = subscr_alloc();
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if (!subscr)
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return NULL;
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result = dbi_conn_queryf(conn,
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"INSERT INTO Subscriber "
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"(imsi, created, updated) "
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"VALUES "
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"(%s, datetime('now'), datetime('now')) ",
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imsi
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);
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if (result==NULL) {
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printf("DB: Failed to create Subscriber by IMSI.\n");
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}
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subscr->id = dbi_conn_sequence_last(conn, NULL);
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strncpy(subscr->imsi, imsi, GSM_IMSI_LENGTH-1);
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dbi_result_free(result);
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printf("DB: New Subscriber: ID %llu, IMSI %s\n", subscr->id, subscr->imsi);
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return subscr;
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}
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struct gsm_subscriber *db_get_subscriber(enum gsm_subscriber_field field, const char *id) {
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dbi_result result;
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const char *string;
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char *quoted;
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struct gsm_subscriber *subscr;
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switch (field) {
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case GSM_SUBSCRIBER_IMSI:
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dbi_conn_quote_string_copy(conn, id, "ed);
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result = dbi_conn_queryf(conn,
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"SELECT * FROM Subscriber "
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"WHERE imsi = %s ",
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quoted
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);
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free(quoted);
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break;
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case GSM_SUBSCRIBER_TMSI:
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dbi_conn_quote_string_copy(conn, id, "ed);
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result = dbi_conn_queryf(conn,
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"SELECT * FROM Subscriber "
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"WHERE tmsi = %s ",
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quoted
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);
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free(quoted);
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break;
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case GSM_SUBSCRIBER_EXTENSION:
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dbi_conn_quote_string_copy(conn, id, "ed);
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result = dbi_conn_queryf(conn,
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"SELECT * FROM Subscriber "
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"WHERE extension = %s ",
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quoted
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);
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free(quoted);
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break;
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default:
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printf("DB: Unknown query selector for Subscriber.\n");
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return NULL;
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}
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if (result==NULL) {
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printf("DB: Failed to query Subscriber.\n");
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return NULL;
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}
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if (!dbi_result_next_row(result)) {
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printf("DB: Failed to find the Subscriber. '%u' '%s'\n",
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field, id);
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dbi_result_free(result);
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return NULL;
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}
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subscr = subscr_alloc();
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subscr->id = dbi_result_get_ulonglong(result, "id");
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string = dbi_result_get_string(result, "imsi");
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if (string)
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strncpy(subscr->imsi, string, GSM_IMSI_LENGTH);
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string = dbi_result_get_string(result, "tmsi");
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if (string)
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strncpy(subscr->tmsi, string, GSM_TMSI_LENGTH);
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string = dbi_result_get_string(result, "name");
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if (string)
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strncpy(subscr->name, string, GSM_NAME_LENGTH);
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string = dbi_result_get_string(result, "extension");
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if (string)
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strncpy(subscr->extension, string, GSM_EXTENSION_LENGTH);
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subscr->lac = dbi_result_get_uint(result, "lac");
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subscr->authorized = dbi_result_get_uint(result, "authorized");
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printf("DB: Found Subscriber: ID %llu, IMSI %s, NAME '%s', TMSI %s, EXTEN '%s', LAC %hu, AUTH %u\n",
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subscr->id, subscr->imsi, subscr->name, subscr->tmsi, subscr->extension,
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subscr->lac, subscr->authorized);
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dbi_result_free(result);
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return subscr;
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}
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int db_sync_subscriber(struct gsm_subscriber* subscriber) {
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dbi_result result;
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result = dbi_conn_queryf(conn,
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"UPDATE Subscriber "
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"SET updated = datetime('now'), "
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"tmsi = '%s', "
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"lac = %i, "
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"authorized = %i "
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"WHERE imsi = %s ",
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subscriber->tmsi, subscriber->lac, subscriber->authorized, subscriber->imsi
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);
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if (result==NULL) {
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printf("DB: Failed to update Subscriber (by IMSI).\n");
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return 1;
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}
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dbi_result_free(result);
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return 0;
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}
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int db_subscriber_alloc_tmsi(struct gsm_subscriber* subscriber) {
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dbi_result result=NULL;
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char* tmsi_quoted;
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for (;;) {
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sprintf(subscriber->tmsi, "%i", rand());
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dbi_conn_quote_string_copy(conn, subscriber->tmsi, &tmsi_quoted);
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result = dbi_conn_queryf(conn,
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"SELECT * FROM Subscriber "
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"WHERE tmsi = %s ",
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tmsi_quoted
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);
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free(tmsi_quoted);
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if (result==NULL) {
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printf("DB: Failed to query Subscriber while allocating new TMSI.\n");
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return 1;
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}
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if (dbi_result_get_numrows(result)){
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dbi_result_free(result);
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continue;
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}
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if (!dbi_result_next_row(result)) {
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dbi_result_free(result);
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printf("DB: Allocated TMSI %s for IMSI %s.\n", subscriber->tmsi, subscriber->imsi);
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return db_sync_subscriber(subscriber);
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}
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dbi_result_free(result);
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}
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return 0;
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}
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int db_subscriber_assoc_imei(struct gsm_subscriber* subscriber, char imei[GSM_IMEI_LENGTH]) {
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u_int64_t equipment_id, watch_id;
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dbi_result result;
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result = dbi_conn_queryf(conn,
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"INSERT OR IGNORE INTO Equipment "
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"(imei, created, updated) "
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"VALUES "
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"(%s, datetime('now'), datetime('now')) ",
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imei
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);
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if (result==NULL) {
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printf("DB: Failed to create Equipment by IMEI.\n");
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return 1;
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}
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equipment_id = 0;
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if (dbi_result_get_numrows_affected(result)) {
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equipment_id = dbi_conn_sequence_last(conn, NULL);
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}
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dbi_result_free(result);
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if (equipment_id) {
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printf("DB: New Equipment: ID %llu, IMEI %s\n", equipment_id, imei);
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}
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else {
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result = dbi_conn_queryf(conn,
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"SELECT id FROM Equipment "
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"WHERE imei = %s ",
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imei
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);
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if (result==NULL) {
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printf("DB: Failed to query Equipment by IMEI.\n");
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return 1;
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}
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if (!dbi_result_next_row(result)) {
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printf("DB: Failed to find the Equipment.\n");
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dbi_result_free(result);
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return 1;
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}
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equipment_id = dbi_result_get_ulonglong(result, "id");
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dbi_result_free(result);
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}
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result = dbi_conn_queryf(conn,
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"INSERT OR IGNORE INTO EquipmentWatch "
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"(subscriber_id, equipment_id, created, updated) "
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"VALUES "
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"(%llu, %llu, datetime('now'), datetime('now')) ",
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subscriber->id, equipment_id
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);
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if (result==NULL) {
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printf("DB: Failed to create EquipmentWatch.\n");
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return 1;
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}
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watch_id = 0;
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if (dbi_result_get_numrows_affected(result)) {
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watch_id = dbi_conn_sequence_last(conn, NULL);
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}
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dbi_result_free(result);
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if (watch_id) {
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printf("DB: New EquipmentWatch: ID %llu, IMSI %s, IMEI %s\n", equipment_id, subscriber->imsi, imei);
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}
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else {
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result = dbi_conn_queryf(conn,
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"UPDATE EquipmentWatch "
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"SET updated = datetime('now') "
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"WHERE subscriber_id = %llu AND equipment_id = %llu ",
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subscriber->id, equipment_id
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);
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if (result==NULL) {
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printf("DB: Failed to update EquipmentWatch.\n");
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return 1;
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}
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dbi_result_free(result);
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printf("DB: Updated EquipmentWatch: ID %llu, IMSI %s, IMEI %s\n", equipment_id, subscriber->imsi, imei);
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}
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return 0;
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}
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/* store an [unsent] SMS to the database */
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int db_sms_store(struct gsm_sms *sms)
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{
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dbi_result result;
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char *q_text;
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dbi_conn_quote_string_copy(conn, (char *)sms->text, &q_text);
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result = dbi_conn_queryf(conn,
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"INSERT INTO SMS "
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"(created,sender_id,receiver_id,header,text) VALUES "
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"(datetime('now'),%llu,%llu,%s,%s)",
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sms->sender->id,
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sms->receiver ? sms->receiver->id : 0,
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NULL, q_text);
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free(q_text);
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if (!result)
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return -EIO;
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dbi_result_free(result);
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return 0;
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}
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/* retrieve the next unsent SMS with ID >= min_id */
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struct gsm_sms *db_sms_get_unsent(int min_id)
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{
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dbi_result result;
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struct gsm_sms *sms = malloc(sizeof(*sms));
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if (!sms) {
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free(sms);
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return NULL;
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}
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result = dbi_conn_queryf(conn,
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"SELECT * FROM SMS "
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"WHERE id >= %llu ORDER BY id", min_id);
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if (!result) {
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free(sms);
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return NULL;
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}
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/* FIXME: fill gsm_sms from database */
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dbi_result_free(result);
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return sms;
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}
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/* mark a given SMS as read */
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int db_sms_mark_sent(struct gsm_sms *sms)
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{
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dbi_result result;
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result = dbi_conn_queryf(conn,
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"UPDATE SMS "
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"SET sent = datetime('now') "
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"WHERE id = %llu", sms->id);
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if (!result) {
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printf("DB: Failed to mark SMS %llu as sent.\n", sms->id);
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return 1;
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}
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dbi_result_free(result);
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return 0;
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}
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