diff options
Diffstat (limited to 'openbsc/src/db.c')
| -rw-r--r-- | openbsc/src/db.c | 464 |
1 files changed, 464 insertions, 0 deletions
diff --git a/openbsc/src/db.c b/openbsc/src/db.c new file mode 100644 index 000000000..600699ae7 --- /dev/null +++ b/openbsc/src/db.c @@ -0,0 +1,464 @@ +/* Simple HLR/VLR database backend using dbi */ +/* (C) 2008 by Jan Luebbe <jluebbe@debian.org> + * (C) 2009 by Holger Hans Peter Freyther <zecke@selfish.org> + * All Rights Reserved + * + * 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 2 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, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + */ + +#include <openbsc/gsm_data.h> +#include <openbsc/db.h> + +#include <libgen.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <errno.h> +#include <dbi/dbi.h> + +static char *db_basename = NULL; +static char *db_dirname = NULL; +static dbi_conn conn; + +static char *create_stmts[] = { + "CREATE TABLE IF NOT EXISTS Meta (" + "id INTEGER PRIMARY KEY AUTOINCREMENT, " + "key TEXT UNIQUE NOT NULL, " + "value TEXT NOT NULL" + ")", + "INSERT OR IGNORE INTO Meta " + "(key, value) " + "VALUES " + "('revision', '1')", + "CREATE TABLE IF NOT EXISTS Subscriber (" + "id INTEGER PRIMARY KEY AUTOINCREMENT, " + "created TIMESTAMP NOT NULL, " + "updated TIMESTAMP NOT NULL, " + "imsi NUMERIC UNIQUE NOT NULL, " + "name TEXT, " + "extension TEXT UNIQUE, " + "authorized INTEGER NOT NULL DEFAULT 0, " + "tmsi TEXT UNIQUE, " + "lac INTEGER NOT NULL DEFAULT 0" + ")", + "CREATE TABLE IF NOT EXISTS Equipment (" + "id INTEGER PRIMARY KEY AUTOINCREMENT, " + "created TIMESTAMP NOT NULL, " + "updated TIMESTAMP NOT NULL, " + "name TEXT, " + "imei NUMERIC UNIQUE NOT NULL" + ")", + "CREATE TABLE IF NOT EXISTS EquipmentWatch (" + "id INTEGER PRIMARY KEY AUTOINCREMENT, " + "created TIMESTAMP NOT NULL, " + "updated TIMESTAMP NOT NULL, " + "subscriber_id NUMERIC NOT NULL, " + "equipment_id NUMERIC NOT NULL, " + "UNIQUE (subscriber_id, equipment_id) " + ")", + "CREATE TABLE IF NOT EXISTS SMS (" + "id INTEGER PRIMARY KEY AUTOINCREMENT, " + "created TIMESTAMP NOT NULL, " + "sent TIMESTAMP, " + "sender_id NUMERIC NOT NULL, " + "receiver_id NUMERIC NOT NULL, " + "header NUMERIC, " + "text TEXT NOT NULL " + ")", + "CREATE TABLE IF NOT EXISTS VLR (" + "id INTEGER PRIMARY KEY AUTOINCREMENT, " + "created TIMESTAMP NOT NULL, " + "updated TIMESTAMP NOT NULL, " + "subscriber_id NUMERIC UNIQUE NOT NULL, " + "last_bts NUMERIC NOT NULL " + ")", +}; + +void db_error_func(dbi_conn conn, void* data) { + const char* msg; + dbi_conn_error(conn, &msg); + printf("DBI: %s\n", msg); +} + +int db_init(const char *name) { + dbi_initialize(NULL); + conn = dbi_conn_new("sqlite3"); + if (conn==NULL) { + printf("DB: Failed to create connection.\n"); + return 1; + } + + dbi_conn_error_handler( conn, db_error_func, NULL ); + + /* MySQL + dbi_conn_set_option(conn, "host", "localhost"); + dbi_conn_set_option(conn, "username", "your_name"); + dbi_conn_set_option(conn, "password", "your_password"); + dbi_conn_set_option(conn, "dbname", "your_dbname"); + dbi_conn_set_option(conn, "encoding", "UTF-8"); + */ + + /* SqLite 3 */ + db_basename = strdup(name); + db_dirname = strdup(name); + dbi_conn_set_option(conn, "sqlite3_dbdir", dirname(db_dirname)); + dbi_conn_set_option(conn, "dbname", basename(db_basename)); + + if (dbi_conn_connect(conn) < 0) { + free(db_dirname); + free(db_basename); + db_dirname = db_basename = NULL; + return 1; + } + + return 0; +} + +int db_prepare() { + dbi_result result; + int i; + + for (i = 0; i < ARRAY_SIZE(create_stmts); i++) { + result = dbi_conn_query(conn, create_stmts[i]); + if (result==NULL) { + printf("DB: Failed to create some table.\n"); + return 1; + } + dbi_result_free(result); + } + + return 0; +} + +int db_fini() { + dbi_conn_close(conn); + dbi_shutdown(); + + if (db_dirname) + free(db_dirname); + if (db_basename) + free(db_basename); + return 0; +} + +struct gsm_subscriber* db_create_subscriber(char *imsi) { + dbi_result result; + struct gsm_subscriber* subscr; + + /* Is this subscriber known in the db? */ + subscr = db_get_subscriber(GSM_SUBSCRIBER_IMSI, imsi); + if (subscr) { + result = dbi_conn_queryf(conn, + "UPDATE Subscriber set updated = datetime('now') " + "WHERE imsi = %s " , imsi); + if (result==NULL) { + printf("DB: failed to update timestamp\n"); + } else { + dbi_result_free(result); + } + return subscr; + } + + subscr = subscr_alloc(); + if (!subscr) + return NULL; + result = dbi_conn_queryf(conn, + "INSERT INTO Subscriber " + "(imsi, created, updated) " + "VALUES " + "(%s, datetime('now'), datetime('now')) ", + imsi + ); + if (result==NULL) { + printf("DB: Failed to create Subscriber by IMSI.\n"); + } + subscr->id = dbi_conn_sequence_last(conn, NULL); + strncpy(subscr->imsi, imsi, GSM_IMSI_LENGTH-1); + dbi_result_free(result); + printf("DB: New Subscriber: ID %llu, IMSI %s\n", subscr->id, subscr->imsi); + return subscr; +} + +struct gsm_subscriber *db_get_subscriber(enum gsm_subscriber_field field, const char *id) { + dbi_result result; + const char *string; + char *quoted; + struct gsm_subscriber *subscr; + + switch (field) { + case GSM_SUBSCRIBER_IMSI: + dbi_conn_quote_string_copy(conn, id, "ed); + result = dbi_conn_queryf(conn, + "SELECT * FROM Subscriber " + "WHERE imsi = %s ", + quoted + ); + free(quoted); + break; + case GSM_SUBSCRIBER_TMSI: + dbi_conn_quote_string_copy(conn, id, "ed); + result = dbi_conn_queryf(conn, + "SELECT * FROM Subscriber " + "WHERE tmsi = %s ", + quoted + ); + free(quoted); + break; + case GSM_SUBSCRIBER_EXTENSION: + dbi_conn_quote_string_copy(conn, id, "ed); + result = dbi_conn_queryf(conn, + "SELECT * FROM Subscriber " + "WHERE extension = %s ", + quoted + ); + free(quoted); + break; + default: + printf("DB: Unknown query selector for Subscriber.\n"); + return NULL; + } + if (result==NULL) { + printf("DB: Failed to query Subscriber.\n"); + return NULL; + } + if (!dbi_result_next_row(result)) { + printf("DB: Failed to find the Subscriber. '%u' '%s'\n", + field, id); + dbi_result_free(result); + return NULL; + } + + subscr = subscr_alloc(); + subscr->id = dbi_result_get_ulonglong(result, "id"); + string = dbi_result_get_string(result, "imsi"); + if (string) + strncpy(subscr->imsi, string, GSM_IMSI_LENGTH); + + string = dbi_result_get_string(result, "tmsi"); + if (string) + strncpy(subscr->tmsi, string, GSM_TMSI_LENGTH); + + string = dbi_result_get_string(result, "name"); + if (string) + strncpy(subscr->name, string, GSM_NAME_LENGTH); + + string = dbi_result_get_string(result, "extension"); + if (string) + strncpy(subscr->extension, string, GSM_EXTENSION_LENGTH); + + subscr->lac = dbi_result_get_uint(result, "lac"); + subscr->authorized = dbi_result_get_uint(result, "authorized"); + printf("DB: Found Subscriber: ID %llu, IMSI %s, NAME '%s', TMSI %s, EXTEN '%s', LAC %hu, AUTH %u\n", + subscr->id, subscr->imsi, subscr->name, subscr->tmsi, subscr->extension, + subscr->lac, subscr->authorized); + dbi_result_free(result); + return subscr; +} + +int db_sync_subscriber(struct gsm_subscriber* subscriber) { + dbi_result result; + result = dbi_conn_queryf(conn, + "UPDATE Subscriber " + "SET updated = datetime('now'), " + "tmsi = '%s', " + "lac = %i, " + "authorized = %i " + "WHERE imsi = %s ", + subscriber->tmsi, subscriber->lac, subscriber->authorized, subscriber->imsi + ); + + if (result==NULL) { + printf("DB: Failed to update Subscriber (by IMSI).\n"); + return 1; + } + dbi_result_free(result); + return 0; +} + +int db_subscriber_alloc_tmsi(struct gsm_subscriber* subscriber) { + dbi_result result=NULL; + char* tmsi_quoted; + for (;;) { + sprintf(subscriber->tmsi, "%i", rand()); + dbi_conn_quote_string_copy(conn, subscriber->tmsi, &tmsi_quoted); + result = dbi_conn_queryf(conn, + "SELECT * FROM Subscriber " + "WHERE tmsi = %s ", + tmsi_quoted + ); + free(tmsi_quoted); + if (result==NULL) { + printf("DB: Failed to query Subscriber while allocating new TMSI.\n"); + return 1; + } + if (dbi_result_get_numrows(result)){ + dbi_result_free(result); + continue; + } + if (!dbi_result_next_row(result)) { + dbi_result_free(result); + printf("DB: Allocated TMSI %s for IMSI %s.\n", subscriber->tmsi, subscriber->imsi); + return db_sync_subscriber(subscriber); + } + dbi_result_free(result); + } + return 0; +} + +int db_subscriber_assoc_imei(struct gsm_subscriber* subscriber, char imei[GSM_IMEI_LENGTH]) { + u_int64_t equipment_id, watch_id; + dbi_result result; + + result = dbi_conn_queryf(conn, + "INSERT OR IGNORE INTO Equipment " + "(imei, created, updated) " + "VALUES " + "(%s, datetime('now'), datetime('now')) ", + imei + ); + if (result==NULL) { + printf("DB: Failed to create Equipment by IMEI.\n"); + return 1; + } + equipment_id = 0; + if (dbi_result_get_numrows_affected(result)) { + equipment_id = dbi_conn_sequence_last(conn, NULL); + } + dbi_result_free(result); + if (equipment_id) { + printf("DB: New Equipment: ID %llu, IMEI %s\n", equipment_id, imei); + } + else { + result = dbi_conn_queryf(conn, + "SELECT id FROM Equipment " + "WHERE imei = %s ", + imei + ); + if (result==NULL) { + printf("DB: Failed to query Equipment by IMEI.\n"); + return 1; + } + if (!dbi_result_next_row(result)) { + printf("DB: Failed to find the Equipment.\n"); + dbi_result_free(result); + return 1; + } + equipment_id = dbi_result_get_ulonglong(result, "id"); + dbi_result_free(result); + } + + result = dbi_conn_queryf(conn, + "INSERT OR IGNORE INTO EquipmentWatch " + "(subscriber_id, equipment_id, created, updated) " + "VALUES " + "(%llu, %llu, datetime('now'), datetime('now')) ", + subscriber->id, equipment_id + ); + if (result==NULL) { + printf("DB: Failed to create EquipmentWatch.\n"); + return 1; + } + watch_id = 0; + if (dbi_result_get_numrows_affected(result)) { + watch_id = dbi_conn_sequence_last(conn, NULL); + } + dbi_result_free(result); + if (watch_id) { + printf("DB: New EquipmentWatch: ID %llu, IMSI %s, IMEI %s\n", equipment_id, subscriber->imsi, imei); + } + else { + result = dbi_conn_queryf(conn, + "UPDATE EquipmentWatch " + "SET updated = datetime('now') " + "WHERE subscriber_id = %llu AND equipment_id = %llu ", + subscriber->id, equipment_id + ); + if (result==NULL) { + printf("DB: Failed to update EquipmentWatch.\n"); + return 1; + } + dbi_result_free(result); + printf("DB: Updated EquipmentWatch: ID %llu, IMSI %s, IMEI %s\n", equipment_id, subscriber->imsi, imei); + } + + return 0; +} + +/* store an [unsent] SMS to the database */ +int db_sms_store(struct gsm_sms *sms) +{ + dbi_result result; + char *q_text; + + dbi_conn_quote_string_copy(conn, (char *)sms->text, &q_text); + result = dbi_conn_queryf(conn, + "INSERT INTO SMS " + "(created,sender_id,receiver_id,header,text) VALUES " + "(datetime('now'),%llu,%llu,%s,%s)", + sms->sender->id, + sms->receiver ? sms->receiver->id : 0, + NULL, q_text); + free(q_text); + + if (!result) + return -EIO; + + dbi_result_free(result); + return 0; +} + +/* retrieve the next unsent SMS with ID >= min_id */ +struct gsm_sms *db_sms_get_unsent(int min_id) +{ + dbi_result result; + struct gsm_sms *sms = malloc(sizeof(*sms)); + + if (!sms) { + free(sms); + return NULL; + } + + result = dbi_conn_queryf(conn, + "SELECT * FROM SMS " + "WHERE id >= %llu ORDER BY id", min_id); + if (!result) { + free(sms); + return NULL; + } + + /* FIXME: fill gsm_sms from database */ + + dbi_result_free(result); + return sms; +} + +/* mark a given SMS as read */ +int db_sms_mark_sent(struct gsm_sms *sms) +{ + dbi_result result; + + result = dbi_conn_queryf(conn, + "UPDATE SMS " + "SET sent = datetime('now') " + "WHERE id = %llu", sms->id); + if (!result) { + printf("DB: Failed to mark SMS %llu as sent.\n", sms->id); + return 1; + } + + dbi_result_free(result); + return 0; +} |