astdb2bdb.c

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/*
 * Asterisk -- An open source telephony toolkit.
 *
 * Copyright (C) 2011, Digium, Inc.
 *
 * Mark Spencer <twilson@digium.com>
 *
 * See http://www.asterisk.org for more information about
 * the Asterisk project. Please do not directly contact
 * any of the maintainers of this project for assistance;
 * the project provides a web site, mailing lists and IRC
 * channels for your use.
 *
 * This program is free software, distributed under the terms of
 * the GNU General Public License Version 2. See the LICENSE file
 * at the top of the source tree.
 */
 
/*! \file
 *
 * \brief SQLite 3 astdb to Berkeley DB converter
 *
 * \author Terry Wilson <twilson@digium.com>
 */
 
/*** MODULEINFO
    <support_level>core</support_level>
 ***/
 
#include "asterisk.h"
 
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <sqlite3.h>
#include <libgen.h> /* OS X doesn't have the basename function in strings.h */
 
#include "db1-ast/include/db.h"
 
static sqlite3 *sql3db;
static DB *bdb;
 
static int add_row_to_bdb(void *arg, int columns, char **values, char **column_names)
{
    DBT key = { 0, }, value = { 0, };
 
    if (columns != 2 || strcmp(column_names[0], "key") || strcmp(column_names[1], "value")) {
        fprintf(stderr, "Unknown row type\n");
        return SQLITE_ABORT;
    }
 
    key.data = values[0];
    key.size = strlen(values[0]) + 1;
    value.data = values[1];
    value.size = strlen(values[1]) + 1;
 
    if (bdb->put(bdb, &key, &value, 0)) {
        return SQLITE_ABORT;
    }
 
    bdb->sync(bdb, 0);
 
    return 0;
}
 
static int convert_bdb_to_sqlite3(void)
{
    char *errmsg = NULL;
    if (sqlite3_exec(sql3db, "SELECT key,value FROM astdb", add_row_to_bdb, NULL, &errmsg) != SQLITE_OK) {
        fprintf(stderr, "Could not add row to Berkeley DB: %s\n", errmsg);
        return -1;
    }
 
    return 0;
}
 
static int db_open_sqlite3(const char *dbname)
{
    if (sqlite3_open(dbname, &sql3db) != SQLITE_OK) {
        fprintf(stderr, "Unable to open Asterisk database '%s': %s\n", dbname, sqlite3_errmsg(sql3db));
        sqlite3_close(sql3db);
        return -1;
    }
 
    return 0;
}
 
static int create_bdb_astdb(void)
{
    if (!bdb && !(bdb = dbopen("astdb", O_CREAT | O_RDWR | O_TRUNC, AST_FILE_MODE, DB_BTREE, NULL))) {
        fprintf(stderr, "Unable to create astdb: %s\n", strerror(errno));
        return -1;
    }
    return 0;
}
 
int main(int argc, char *argv[])
{
    struct stat dont_care;
 
    if (argc != 2) {
        fprintf(stderr, "%s takes the path of SQLite3 astdb as its only argument\n", basename(argv[0]));
        fprintf(stderr, "and will produce a file 'astdb' in the current directory\n"
                "Make a backup of any existing Berkeley DB astdb you have and copy\n"
                "the new astdb to its location: often /var/lib/asterisk/astdb\n");
        exit(-1);
    }
 
    if (stat(argv[1], &dont_care)) {
        fprintf(stderr, "Unable to open %s: %s\n", argv[1], strerror(errno));
        exit(-1);
    }
 
    if (db_open_sqlite3(argv[1])) {
        exit(-1);
    }
 
    if (create_bdb_astdb()) {
        exit(-1);
    }
 
    if (convert_bdb_to_sqlite3()) {
        fprintf(stderr, "Database conversion failed!\n");
        exit(-1);
        sqlite3_close(sql3db);
    }
 
    printf("Created ./astdb. Back up any existing astdb and copy the created\n");
    printf("astdb file to the original's location. Often /var/lib/asterisk/astdb.\n");
 
    sqlite3_close(sql3db);
    return 0;
}