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asterisk/addons/res_config_mysql.c

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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 1999-2005, Digium, Inc.
*
* Mark Spencer <markster@digium.com> - Asterisk Author
* Matthew Boehm <mboehm@cytelcom.com> - MySQL RealTime Driver Author
*
* 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 MySQL CDR backend
*/
/*** MODULEINFO
<depend>mysqlclient</depend>
<defaultenabled>no</defaultenabled>
***/
#include "asterisk.h"
ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
#include <sys/stat.h>
#include <mysql/mysql.h>
#include <mysql/mysql_version.h>
#include <mysql/errmsg.h>
#include "asterisk/channel.h"
#include "asterisk/logger.h"
#include "asterisk/config.h"
#include "asterisk/module.h"
#include "asterisk/lock.h"
#include "asterisk/options.h"
#include "asterisk/cli.h"
#include "asterisk/utils.h"
#include "asterisk/threadstorage.h"
#define RES_CONFIG_MYSQL_CONF "res_mysql.conf"
#define READHANDLE 0
#define WRITEHANDLE 1
#define ESCAPE_STRING(buf, var) \
do { \
if ((valsz = strlen(var)) * 2 + 1 > ast_str_size(buf)) { \
ast_str_make_space(&(buf), valsz * 2 + 1); \
} \
mysql_real_escape_string(&dbh->handle, ast_str_buffer(buf), var, valsz); \
} while (0)
AST_THREADSTORAGE(sql_buf);
AST_THREADSTORAGE(sql2_buf);
AST_THREADSTORAGE(find_buf);
AST_THREADSTORAGE(scratch_buf);
AST_THREADSTORAGE(modify_buf);
AST_THREADSTORAGE(modify2_buf);
AST_THREADSTORAGE(modify3_buf);
enum requirements { RQ_WARN, RQ_CREATECLOSE, RQ_CREATECHAR };
struct mysql_conn {
AST_RWLIST_ENTRY(mysql_conn) list;
ast_mutex_t lock;
MYSQL handle;
char host[50];
char name[50];
char user[50];
char pass[50];
char sock[50];
int port;
int connected;
time_t connect_time;
enum requirements requirements;
char unique_name[0];
};
struct columns {
char *name;
char *type;
char *dflt;
char null;
int len;
AST_LIST_ENTRY(columns) list;
};
struct tables {
ast_mutex_t lock;
AST_LIST_HEAD_NOLOCK(mysql_columns, columns) columns;
AST_LIST_ENTRY(tables) list;
struct mysql_conn *database;
char name[0];
};
static AST_LIST_HEAD_STATIC(mysql_tables, tables);
static AST_RWLIST_HEAD_STATIC(databases, mysql_conn);
static int parse_config(int reload);
static int mysql_reconnect(struct mysql_conn *conn);
static char *handle_cli_realtime_mysql_status(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a);
static char *handle_cli_realtime_mysql_cache(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a);
static int load_mysql_config(struct ast_config *config, const char *category, struct mysql_conn *conn);
static int require_mysql(const char *database, const char *tablename, va_list ap);
static int internal_require(const char *database, const char *table, ...) attribute_sentinel;
static struct ast_cli_entry cli_realtime_mysql_status[] = {
AST_CLI_DEFINE(handle_cli_realtime_mysql_status, "Shows connection information for the MySQL RealTime driver"),
AST_CLI_DEFINE(handle_cli_realtime_mysql_cache, "Shows cached tables within the MySQL realtime driver"),
};
static struct mysql_conn *find_database(const char *database, int for_write)
{
char *whichdb;
const char *ptr;
struct mysql_conn *cur;
if ((ptr = strchr(database, '/'))) {
/* Multiple databases encoded within string */
if (for_write) {
whichdb = ast_strdupa(ptr + 1);
} else {
whichdb = alloca(ptr - database + 1);
strncpy(whichdb, database, ptr - database);
whichdb[ptr - database] = '\0';
}
} else {
whichdb = ast_strdupa(database);
}
AST_RWLIST_RDLOCK(&databases);
AST_RWLIST_TRAVERSE(&databases, cur, list) {
if (!strcmp(cur->unique_name, whichdb)) {
ast_mutex_lock(&cur->lock);
break;
}
}
AST_RWLIST_UNLOCK(&databases);
return cur;
}
#define release_database(a) ast_mutex_unlock(&(a)->lock)
static int internal_require(const char *database, const char *table, ...)
{
va_list ap;
int res;
va_start(ap, table);
res = require_mysql(database, table, ap);
va_end(ap);
return res;
}
static void destroy_table(struct tables *table)
{
struct columns *column;
ast_mutex_lock(&table->lock);
while ((column = AST_LIST_REMOVE_HEAD(&table->columns, list))) {
ast_free(column);
}
ast_mutex_unlock(&table->lock);
ast_mutex_destroy(&table->lock);
ast_free(table);
}
static struct tables *find_table(const char *database, const char *tablename)
{
struct columns *column;
struct tables *table;
struct ast_str *sql = ast_str_thread_get(&find_buf, 30);
char *fname, *ftype, *flen, *fdflt, *fnull;
struct mysql_conn *dbh;
MYSQL_RES *result;
MYSQL_ROW row;
if (!(dbh = find_database(database, 1))) {
return NULL;
}
AST_LIST_LOCK(&mysql_tables);
AST_LIST_TRAVERSE(&mysql_tables, table, list) {
if (!strcasecmp(table->name, tablename)) {
ast_mutex_lock(&table->lock);
AST_LIST_UNLOCK(&mysql_tables);
release_database(dbh);
return table;
}
}
/* Not found, scan the table */
ast_str_set(&sql, 0, "DESC %s", tablename);
if (!mysql_reconnect(dbh)) {
release_database(dbh);
AST_LIST_UNLOCK(&mysql_tables);
return NULL;
}
if (mysql_real_query(&dbh->handle, ast_str_buffer(sql), ast_str_strlen(sql))) {
ast_log(LOG_ERROR, "Failed to query database columns: %s\n", mysql_error(&dbh->handle));
release_database(dbh);
AST_LIST_UNLOCK(&mysql_tables);
return NULL;
}
if (!(table = ast_calloc(1, sizeof(*table) + strlen(tablename) + 1))) {
ast_log(LOG_ERROR, "Unable to allocate memory for new table structure\n");
release_database(dbh);
AST_LIST_UNLOCK(&mysql_tables);
return NULL;
}
strcpy(table->name, tablename); /* SAFE */
table->database = dbh;
ast_mutex_init(&table->lock);
AST_LIST_HEAD_INIT_NOLOCK(&table->columns);
if ((result = mysql_store_result(&dbh->handle))) {
while ((row = mysql_fetch_row(result))) {
fname = row[0];
ftype = row[1];
fnull = row[2];
fdflt = row[4];
ast_verb(4, "Found column '%s' of type '%s'\n", fname, ftype);
if (fdflt == NULL) {
fdflt = "";
}
if (!(column = ast_calloc(1, sizeof(*column) + strlen(fname) + strlen(ftype) + strlen(fdflt) + 3))) {
ast_log(LOG_ERROR, "Unable to allocate column element for %s, %s\n", tablename, fname);
destroy_table(table);
release_database(dbh);
AST_LIST_UNLOCK(&mysql_tables);
return NULL;
}
if ((flen = strchr(ftype, '('))) {
sscanf(flen, "(%d)", &column->len);
} else {
/* Columns like dates, times, and timestamps don't have a length */
column->len = -1;
}
column->name = (char *)column + sizeof(*column);
column->type = (char *)column + sizeof(*column) + strlen(fname) + 1;
column->dflt = (char *)column + sizeof(*column) + strlen(fname) + 1 + strlen(ftype) + 1;
strcpy(column->name, fname);
strcpy(column->type, ftype);
strcpy(column->dflt, fdflt);
column->null = (strcmp(fnull, "YES") == 0 ? 1 : 0);
AST_LIST_INSERT_TAIL(&table->columns, column, list);
}
mysql_free_result(result);
}
AST_LIST_INSERT_TAIL(&mysql_tables, table, list);
ast_mutex_lock(&table->lock);
AST_LIST_UNLOCK(&mysql_tables);
release_database(dbh);
return table;
}
static void release_table(struct tables *table)
{
if (table) {
ast_mutex_unlock(&table->lock);
}
}
static struct columns *find_column(struct tables *table, const char *colname)
{
struct columns *column;
AST_LIST_TRAVERSE(&table->columns, column, list) {
if (strcmp(column->name, colname) == 0) {
break;
}
}
return column;
}
static struct ast_variable *realtime_mysql(const char *database, const char *table, va_list ap)
{
struct mysql_conn *dbh;
MYSQL_RES *result;
MYSQL_ROW row;
MYSQL_FIELD *fields;
int numFields, i, valsz;
struct ast_str *sql = ast_str_thread_get(&sql_buf, 16);
struct ast_str *buf = ast_str_thread_get(&scratch_buf, 16);
char *stringp;
char *chunk;
char *op;
const char *newparam, *newval;
struct ast_variable *var=NULL, *prev=NULL;
if (!(dbh = find_database(database, 0))) {
ast_log(LOG_WARNING, "MySQL RealTime: Invalid database specified: %s\n", database);
return NULL;
}
if (!table) {
ast_log(LOG_WARNING, "MySQL RealTime: No table specified.\n");
release_database(dbh);
return NULL;
}
/* Get the first parameter and first value in our list of passed paramater/value pairs */
newparam = va_arg(ap, const char *);
newval = va_arg(ap, const char *);
if (!newparam || !newval) {
ast_log(LOG_WARNING, "MySQL RealTime: Realtime retrieval requires at least 1 parameter and 1 value to search on.\n");
release_database(dbh);
return NULL;
}
/* Must connect to the server before anything else, as the escape function requires the mysql handle. */
if (!mysql_reconnect(dbh)) {
release_database(dbh);
return NULL;
}
/* Create the first part of the query using the first parameter/value pairs we just extracted
If there is only 1 set, then we have our query. Otherwise, loop thru the list and concat */
if (!strchr(newparam, ' '))
op = " =";
else
op = "";
ESCAPE_STRING(buf, newval);
ast_str_set(&sql, 0, "SELECT * FROM %s WHERE %s%s '%s'", table, newparam, op, ast_str_buffer(buf));
while ((newparam = va_arg(ap, const char *))) {
newval = va_arg(ap, const char *);
if (!strchr(newparam, ' '))
op = " =";
else
op = "";
ESCAPE_STRING(buf, newval);
ast_str_append(&sql, 0, " AND %s%s '%s'", newparam, op, ast_str_buffer(buf));
}
va_end(ap);
ast_debug(1, "MySQL RealTime: Retrieve SQL: %s\n", ast_str_buffer(sql));
/* Execution. */
if (mysql_real_query(&dbh->handle, ast_str_buffer(sql), ast_str_strlen(sql))) {
ast_log(LOG_WARNING, "MySQL RealTime: Failed to query database: %s\n", mysql_error(&dbh->handle));
release_database(dbh);
return NULL;
}
if ((result = mysql_store_result(&dbh->handle))) {
numFields = mysql_num_fields(result);
fields = mysql_fetch_fields(result);
while ((row = mysql_fetch_row(result))) {
for (i = 0; i < numFields; i++) {
if (ast_strlen_zero(row[i]))
continue;
for (stringp = ast_strdupa(row[i]), chunk = strsep(&stringp, ";"); chunk; chunk = strsep(&stringp, ";")) {
if (!chunk || ast_strlen_zero(ast_strip(chunk))) {
continue;
}
if (prev) {
if ((prev->next = ast_variable_new(fields[i].name, chunk, ""))) {
prev = prev->next;
}
} else {
prev = var = ast_variable_new(fields[i].name, chunk, "");
}
}
}
}
} else {
ast_debug(1, "MySQL RealTime: Could not find any rows in table %s.\n", table);
}
release_database(dbh);
mysql_free_result(result);
return var;
}
static struct ast_config *realtime_multi_mysql(const char *database, const char *table, va_list ap)
{
struct mysql_conn *dbh;
MYSQL_RES *result;
MYSQL_ROW row;
MYSQL_FIELD *fields;
int numFields, i, valsz;
struct ast_str *sql = ast_str_thread_get(&sql_buf, 16);
struct ast_str *buf = ast_str_thread_get(&scratch_buf, 16);
const char *initfield = NULL;
char *stringp;
char *chunk;
char *op;
const char *newparam, *newval;
struct ast_variable *var = NULL;
struct ast_config *cfg = NULL;
struct ast_category *cat = NULL;
if (!(dbh = find_database(database, 0))) {
ast_log(LOG_WARNING, "MySQL RealTime: Invalid database specified: '%s'\n", database);
return NULL;
}
if (!table) {
ast_log(LOG_WARNING, "MySQL RealTime: No table specified.\n");
release_database(dbh);
return NULL;
}
if (!(cfg = ast_config_new())) {
/* If I can't alloc memory at this point, why bother doing anything else? */
ast_log(LOG_WARNING, "Out of memory!\n");
release_database(dbh);
return NULL;
}
/* Get the first parameter and first value in our list of passed paramater/value pairs */
newparam = va_arg(ap, const char *);
newval = va_arg(ap, const char *);
if (!newparam || !newval) {
ast_log(LOG_WARNING, "MySQL RealTime: Realtime retrieval requires at least 1 parameter and 1 value to search on.\n");
ast_config_destroy(cfg);
release_database(dbh);
return NULL;
}
initfield = ast_strdupa(newparam);
if (initfield && (op = strchr(initfield, ' '))) {
*op = '\0';
}
/* Must connect to the server before anything else, as the escape function requires the mysql handle. */
if (!mysql_reconnect(dbh)) {
release_database(dbh);
ast_config_destroy(cfg);
return NULL;
}
/* Create the first part of the query using the first parameter/value pairs we just extracted
If there is only 1 set, then we have our query. Otherwise, loop thru the list and concat */
if (!strchr(newparam, ' '))
op = " =";
else
op = "";
ESCAPE_STRING(buf, newval);
ast_str_set(&sql, 0, "SELECT * FROM %s WHERE %s%s '%s'", table, newparam, op, ast_str_buffer(buf));
while ((newparam = va_arg(ap, const char *))) {
newval = va_arg(ap, const char *);
if (!strchr(newparam, ' ')) op = " ="; else op = "";
ESCAPE_STRING(buf, newval);
ast_str_append(&sql, 0, " AND %s%s '%s'", newparam, op, ast_str_buffer(buf));
}
if (initfield) {
ast_str_append(&sql, 0, " ORDER BY %s", initfield);
}
va_end(ap);
ast_debug(1, "MySQL RealTime: Retrieve SQL: %s\n", ast_str_buffer(sql));
/* Execution. */
if (mysql_real_query(&dbh->handle, ast_str_buffer(sql), ast_str_strlen(sql))) {
ast_log(LOG_WARNING, "MySQL RealTime: Failed to query database: %s\n", mysql_error(&dbh->handle));
release_database(dbh);
ast_config_destroy(cfg);
return NULL;
}
if ((result = mysql_store_result(&dbh->handle))) {
numFields = mysql_num_fields(result);
fields = mysql_fetch_fields(result);
while ((row = mysql_fetch_row(result))) {
var = NULL;
cat = ast_category_new("", "", -1);
if (!cat) {
ast_log(LOG_WARNING, "Out of memory!\n");
continue;
}
for (i = 0; i < numFields; i++) {
if (ast_strlen_zero(row[i]))
continue;
for (stringp = ast_strdupa(row[i]), chunk = strsep(&stringp, ";"); chunk; chunk = strsep(&stringp, ";")) {
if (chunk && !ast_strlen_zero(ast_strip(chunk))) {
if (initfield && !strcmp(initfield, fields[i].name)) {
ast_category_rename(cat, chunk);
}
var = ast_variable_new(fields[i].name, chunk, "");
ast_variable_append(cat, var);
}
}
}
ast_category_append(cfg, cat);
}
} else {
ast_debug(1, "MySQL RealTime: Could not find any rows in table %s.\n", table);
}
release_database(dbh);
mysql_free_result(result);
return cfg;
}
static int update_mysql(const char *database, const char *tablename, const char *keyfield, const char *lookup, va_list ap)
{
struct mysql_conn *dbh;
my_ulonglong numrows;
int valsz;
const char *newparam, *newval;
struct ast_str *sql = ast_str_thread_get(&sql_buf, 100), *buf = ast_str_thread_get(&scratch_buf, 100);
struct tables *table;
struct columns *column = NULL;
if (!(dbh = find_database(database, 1))) {
ast_log(LOG_WARNING, "MySQL RealTime: Invalid database specified: '%s'.\n", database);
return -1;
}
if (!tablename) {
ast_log(LOG_WARNING, "MySQL RealTime: No table specified.\n");
release_database(dbh);
return -1;
}
if (!(table = find_table(database, tablename))) {
ast_log(LOG_ERROR, "Table '%s' does not exist!!\n", tablename);
release_database(dbh);
return -1;
}
if (!(column = find_column(table, keyfield))) {
ast_log(LOG_ERROR, "MySQL RealTime: Updating on column '%s', but that column does not exist within the table '%s'!\n", keyfield, tablename);
release_table(table);
release_database(dbh);
return -1;
}
/* Get the first parameter and first value in our list of passed paramater/value pairs */
newparam = va_arg(ap, const char *);
newval = va_arg(ap, const char *);
if (!newparam || !newval) {
ast_log(LOG_WARNING, "MySQL RealTime: Realtime retrieval requires at least 1 parameter and 1 value to search on.\n");
release_table(table);
release_database(dbh);
return -1;
}
/* Check that the column exists in the table */
if (!(column = find_column(table, newparam))) {
ast_log(LOG_ERROR, "MySQL RealTime: Updating on column '%s', but that column does not exist within the table '%s'!\n", newparam, tablename);
release_table(table);
release_database(dbh);
return -1;
}
/* Must connect to the server before anything else, as the escape function requires the mysql handle. */
if (!mysql_reconnect(dbh)) {
release_table(table);
release_database(dbh);
return -1;
}
/* Create the first part of the query using the first parameter/value pairs we just extracted
If there is only 1 set, then we have our query. Otherwise, loop thru the list and concat */
ESCAPE_STRING(buf, newval);
ast_str_set(&sql, 0, "UPDATE %s SET %s = '%s'", tablename, newparam, ast_str_buffer(buf));
/* If the column length isn't long enough, give a chance to lengthen it. */
if (strncmp(column->type, "char", 4) == 0 || strncmp(column->type, "varchar", 7) == 0) {
internal_require(database, tablename, newparam, RQ_CHAR, valsz, SENTINEL);
}
while ((newparam = va_arg(ap, const char *))) {
newval = va_arg(ap, const char *);
/* If the column is not within the table, then skip it */
if (!(column = find_column(table, newparam))) {
ast_log(LOG_WARNING, "Attempted to update column '%s' in table '%s', but column does not exist!\n", newparam, tablename);
continue;
}
ESCAPE_STRING(buf, newval);
ast_str_append(&sql, 0, ", %s = '%s'", newparam, ast_str_buffer(buf));
/* If the column length isn't long enough, give a chance to lengthen it. */
if (strncmp(column->type, "char", 4) == 0 || strncmp(column->type, "varchar", 7) == 0) {
internal_require(database, tablename, newparam, RQ_CHAR, valsz, SENTINEL);
}
}
va_end(ap);
ESCAPE_STRING(buf, lookup);
ast_str_append(&sql, 0, " WHERE %s = '%s'", keyfield, ast_str_buffer(buf));
ast_debug(1, "MySQL RealTime: Update SQL: %s\n", ast_str_buffer(sql));
/* Execution. */
if (mysql_real_query(&dbh->handle, ast_str_buffer(sql), ast_str_strlen(sql))) {
ast_log(LOG_WARNING, "MySQL RealTime: Failed to query database: %s\n", mysql_error(&dbh->handle));
release_table(table);
release_database(dbh);
return -1;
}
numrows = mysql_affected_rows(&dbh->handle);
release_table(table);
release_database(dbh);
ast_debug(1, "MySQL RealTime: Updated %llu rows on table: %s\n", numrows, tablename);
/* From http://dev.mysql.com/doc/mysql/en/mysql-affected-rows.html
* An integer greater than zero indicates the number of rows affected
* Zero indicates that no records were updated
* -1 indicates that the query returned an error (although, if the query failed, it should have been caught above.)
*/
return (int)numrows;
}
static int update2_mysql(const char *database, const char *tablename, va_list ap)
{
struct mysql_conn *dbh;
my_ulonglong numrows;
int first = 1;
const char *newparam, *newval;
size_t valsz;
struct ast_str *sql = ast_str_thread_get(&sql_buf, 100), *buf = ast_str_thread_get(&scratch_buf, 100);
struct ast_str *where = ast_str_thread_get(&sql2_buf, 100);
struct tables *table;
struct columns *column = NULL;
if (!tablename) {
ast_log(LOG_WARNING, "MySQL RealTime: No table specified.\n");
return -1;
}
if (!(dbh = find_database(database, 1))) {
ast_log(LOG_ERROR, "Invalid database specified: %s\n", database);
return -1;
}
if (!(table = find_table(database, tablename))) {
ast_log(LOG_ERROR, "Table '%s' does not exist!!\n", tablename);
release_database(dbh);
return -1;
}
if (!sql || !buf || !where) {
release_database(dbh);
release_table(table);
return -1;
}
ast_str_set(&sql, 0, "UPDATE %s SET", tablename);
ast_str_set(&where, 0, "WHERE");
/* Must connect to the server before anything else, as the escape function requires the mysql handle. */
if (!mysql_reconnect(dbh)) {
release_table(table);
release_database(dbh);
return -1;
}
while ((newparam = va_arg(ap, const char *))) {
if (!(column = find_column(table, newparam))) {
ast_log(LOG_ERROR, "Updating on column '%s', but that column does not exist within the table '%s'!\n", newparam, tablename);
release_table(table);
release_database(dbh);
return -1;
}
if (!(newval = va_arg(ap, const char *))) {
ast_log(LOG_ERROR, "Invalid arguments: no value specified for column '%s' on '%s@%s'\n", newparam, tablename, database);
release_table(table);
release_database(dbh);
return -1;
}
ESCAPE_STRING(buf, newval);
ast_str_append(&where, 0, "%s %s='%s'", first ? "" : " AND", newparam, ast_str_buffer(buf));
first = 0;
/* If the column length isn't long enough, give a chance to lengthen it. */
if (strncmp(column->type, "char", 4) == 0 || strncmp(column->type, "varchar", 7) == 0) {
internal_require(database, tablename, newparam, RQ_CHAR, valsz, SENTINEL);
}
}
first = 1;
while ((newparam = va_arg(ap, const char *))) {
if (!(newval = va_arg(ap, const char *))) {
ast_log(LOG_ERROR, "Invalid arguments: no value specified for column '%s' on '%s@%s'\n", newparam, tablename, database);
release_table(table);
release_database(dbh);
return -1;
}
/* If the column is not within the table, then skip it */
if (!(column = find_column(table, newparam))) {
ast_log(LOG_WARNING, "Attempted to update column '%s' in table '%s', but column does not exist!\n", newparam, tablename);
continue;
}
ESCAPE_STRING(buf, newval);
ast_str_append(&sql, 0, "%s %s = '%s'", first ? "" : ",", newparam, ast_str_buffer(buf));
/* If the column length isn't long enough, give a chance to lengthen it. */
if (strncmp(column->type, "char", 4) == 0 || strncmp(column->type, "varchar", 7) == 0) {
internal_require(database, tablename, newparam, RQ_CHAR, valsz, SENTINEL);
}
}
va_end(ap);
release_table(table);
ast_str_append(&sql, 0, " %s", ast_str_buffer(where));
ast_debug(1, "MySQL RealTime: Update SQL: %s\n", ast_str_buffer(sql));
/* Execution. */
if (mysql_real_query(&dbh->handle, ast_str_buffer(sql), ast_str_strlen(sql))) {
ast_log(LOG_WARNING, "MySQL RealTime: Failed to query database: %s\n", mysql_error(&dbh->handle));
release_table(table);
release_database(dbh);
return -1;
}
numrows = mysql_affected_rows(&dbh->handle);
release_database(dbh);
ast_debug(1, "MySQL RealTime: Updated %llu rows on table: %s\n", numrows, tablename);
/* From http://dev.mysql.com/doc/mysql/en/mysql-affected-rows.html
* An integer greater than zero indicates the number of rows affected
* Zero indicates that no records were updated
* -1 indicates that the query returned an error (although, if the query failed, it should have been caught above.)
*/
return (int)numrows;
}
static int store_mysql(const char *database, const char *table, va_list ap)
{
struct mysql_conn *dbh;
my_ulonglong insertid;
struct ast_str *sql = ast_str_thread_get(&sql_buf, 16);
struct ast_str *sql2 = ast_str_thread_get(&sql2_buf, 16);
struct ast_str *buf = ast_str_thread_get(&scratch_buf, 16);
int valsz;
const char *newparam, *newval;
if (!(dbh = find_database(database, 1))) {
ast_log(LOG_WARNING, "MySQL RealTime: Invalid database specified: '%s'.\n", database);
return -1;
}
if (!table) {
ast_log(LOG_WARNING, "MySQL RealTime: No table specified.\n");
release_database(dbh);
return -1;
}
/* Get the first parameter and first value in our list of passed paramater/value pairs */
newparam = va_arg(ap, const char *);
newval = va_arg(ap, const char *);
if (!newparam || !newval) {
ast_log(LOG_WARNING, "MySQL RealTime: Realtime storage requires at least 1 parameter and 1 value to search on.\n");
release_database(dbh);
return -1;
}
/* Must connect to the server before anything else, as the escape function requires the mysql handle. */
if (!mysql_reconnect(dbh)) {
release_database(dbh);
return -1;
}
/* Create the first part of the query using the first parameter/value pairs we just extracted
If there is only 1 set, then we have our query. Otherwise, loop thru the list and concat */
ESCAPE_STRING(buf, newval);
ast_str_set(&sql, 0, "INSERT INTO %s (%s", table, newparam);
ast_str_set(&sql2, 0, ") VALUES ('%s'", ast_str_buffer(buf));
internal_require(database, table, newparam, RQ_CHAR, valsz, SENTINEL);
while ((newparam = va_arg(ap, const char *))) {
if ((newval = va_arg(ap, const char *))) {
ESCAPE_STRING(buf, newval);
} else {
valsz = 0;
ast_str_reset(buf);
}
if (internal_require(database, table, newparam, RQ_CHAR, valsz, SENTINEL) == 0) {
ast_str_append(&sql, 0, ", %s", newparam);
ast_str_append(&sql2, 0, ", '%s'", ast_str_buffer(buf));
}
}
va_end(ap);
ast_str_append(&sql, 0, "%s)", ast_str_buffer(sql2));
ast_debug(1,"MySQL RealTime: Insert SQL: %s\n", ast_str_buffer(sql));
/* Execution. */
if (mysql_real_query(&dbh->handle, ast_str_buffer(sql), ast_str_strlen(sql))) {
ast_log(LOG_WARNING, "MySQL RealTime: Failed to query database: %s\n", mysql_error(&dbh->handle));
release_database(dbh);
return -1;
}
/*!\note The return value is non-portable and may change in future versions. */
insertid = mysql_insert_id(&dbh->handle);
release_database(dbh);
ast_debug(1, "MySQL RealTime: row inserted on table: %s, id: %llu\n", table, insertid);
/* From http://dev.mysql.com/doc/mysql/en/mysql-affected-rows.html
* An integer greater than zero indicates the number of rows affected
* Zero indicates that no records were updated
* -1 indicates that the query returned an error (although, if the query failed, it should have been caught above.)
*/
return (int)insertid;
}
static int destroy_mysql(const char *database, const char *table, const char *keyfield, const char *lookup, va_list ap)
{
struct mysql_conn *dbh;
my_ulonglong numrows;
struct ast_str *sql = ast_str_thread_get(&sql_buf, 16);
struct ast_str *buf = ast_str_thread_get(&scratch_buf, 16);
int valsz;
const char *newparam, *newval;
if (!(dbh = find_database(database, 1))) {
ast_log(LOG_WARNING, "MySQL RealTime: Invalid database specified: '%s'.\n", database);
return -1;
}
if (!table) {
ast_log(LOG_WARNING, "MySQL RealTime: No table specified.\n");
release_database(dbh);
return -1;
}
/* Get the first parameter and first value in our list of passed paramater/value pairs */
/* newparam = va_arg(ap, const char *);
newval = va_arg(ap, const char *);*/
if (ast_strlen_zero(keyfield) || ast_strlen_zero(lookup)) {
ast_log(LOG_WARNING, "MySQL RealTime: Realtime destroying requires at least 1 parameter and 1 value to search on.\n");
release_database(dbh);
return -1;
}
/* Must connect to the server before anything else, as the escape function requires the mysql handle. */
if (!mysql_reconnect(dbh)) {
release_database(dbh);
return -1;
}
/* Create the first part of the query using the first parameter/value pairs we just extracted
If there is only 1 set, then we have our query. Otherwise, loop thru the list and concat */
ESCAPE_STRING(buf, lookup);
ast_str_set(&sql, 0, "DELETE FROM %s WHERE %s = '%s'", table, keyfield, ast_str_buffer(buf));
while ((newparam = va_arg(ap, const char *))) {
newval = va_arg(ap, const char *);
ESCAPE_STRING(buf, newval);
ast_str_append(&sql, 0, " AND %s = '%s'", newparam, ast_str_buffer(buf));
}
va_end(ap);
ast_debug(1, "MySQL RealTime: Delete SQL: %s\n", ast_str_buffer(sql));
/* Execution. */
if (mysql_real_query(&dbh->handle, ast_str_buffer(sql), ast_str_strlen(sql))) {
ast_log(LOG_WARNING, "MySQL RealTime: Failed to query database: %s\n", mysql_error(&dbh->handle));
release_database(dbh);
return -1;
}
numrows = mysql_affected_rows(&dbh->handle);
release_database(dbh);
ast_debug(1, "MySQL RealTime: Deleted %llu rows on table: %s\n", numrows, table);
/* From http://dev.mysql.com/doc/mysql/en/mysql-affected-rows.html
* An integer greater than zero indicates the number of rows affected
* Zero indicates that no records were updated
* -1 indicates that the query returned an error (although, if the query failed, it should have been caught above.)
*/
return (int)numrows;
}
static struct ast_config *config_mysql(const char *database, const char *table, const char *file, struct ast_config *cfg, struct ast_flags config_flags, const char *unused, const char *who_asked)
{
struct mysql_conn *dbh;
MYSQL_RES *result;
MYSQL_ROW row;
my_ulonglong num_rows;
struct ast_variable *new_v;
struct ast_category *cur_cat = NULL;
struct ast_str *sql = ast_str_thread_get(&sql_buf, 200);
char last[80] = "";
int last_cat_metric = 0;
ast_clear_flag(&config_flags, CONFIG_FLAG_FILEUNCHANGED);
if (!file || !strcmp(file, RES_CONFIG_MYSQL_CONF)) {
ast_log(LOG_WARNING, "MySQL RealTime: Cannot configure myself.\n");
return NULL;
}
if (!(dbh = find_database(database, 0))) {
ast_log(LOG_WARNING, "MySQL RealTime: Invalid database specified: '%s'\n", database);
return NULL;
}
ast_str_set(&sql, 0, "SELECT category, var_name, var_val, cat_metric FROM %s WHERE filename='%s' and commented=1 ORDER BY filename, cat_metric desc, var_metric asc, category, var_name, var_val, id", table, file);
ast_debug(1, "MySQL RealTime: Static SQL: %s\n", ast_str_buffer(sql));
/* We now have our complete statement; Lets connect to the server and execute it. */
if (!mysql_reconnect(dbh)) {
return NULL;
}
if (mysql_real_query(&dbh->handle, ast_str_buffer(sql), ast_str_strlen(sql))) {
ast_log(LOG_WARNING, "MySQL RealTime: Failed to query database. Check debug for more info.\n");
ast_debug(1, "MySQL RealTime: Query: %s\n", ast_str_buffer(sql));
ast_debug(1, "MySQL RealTime: Query Failed because: %s\n", mysql_error(&dbh->handle));
release_database(dbh);
return NULL;
}
if ((result = mysql_store_result(&dbh->handle))) {
num_rows = mysql_num_rows(result);
ast_debug(1, "MySQL RealTime: Found %llu rows.\n", num_rows);
/* There might exist a better way to access the column names other than counting,
* but I believe that would require another loop that we don't need. */
while ((row = mysql_fetch_row(result))) {
if (!strcmp(row[1], "#include")) {
if (!ast_config_internal_load(row[2], cfg, config_flags, "", who_asked)) {
mysql_free_result(result);
release_database(dbh);
ast_config_destroy(cfg);
return NULL;
}
continue;
}
if (strcmp(last, row[0]) || last_cat_metric != atoi(row[3])) {
if (!(cur_cat = ast_category_new(row[0], "", -1))) {
ast_log(LOG_WARNING, "Out of memory!\n");
break;
}
strcpy(last, row[0]);
last_cat_metric = atoi(row[3]);
ast_category_append(cfg, cur_cat);
}
new_v = ast_variable_new(row[1], row[2], "");
if (cur_cat)
ast_variable_append(cur_cat, new_v);
}
} else {
ast_log(LOG_WARNING, "MySQL RealTime: Could not find config '%s' in database.\n", file);
}
mysql_free_result(result);
release_database(dbh);
return cfg;
}
static int unload_mysql(const char *database, const char *tablename)
{
struct tables *cur;
AST_LIST_LOCK(&mysql_tables);
AST_LIST_TRAVERSE_SAFE_BEGIN(&mysql_tables, cur, list) {
if (strcmp(cur->name, tablename) == 0) {
AST_LIST_REMOVE_CURRENT(list);
destroy_table(cur);
break;
}
}
AST_LIST_TRAVERSE_SAFE_END
AST_LIST_UNLOCK(&mysql_tables);
return cur ? 0 : -1;
}
static int modify_mysql(const char *database, const char *tablename, struct columns *column, require_type type, int len)
{
/*!\note Cannot use ANY of the same scratch space as is used in other functions, as this one is interspersed. */
struct ast_str *sql = ast_str_thread_get(&modify_buf, 100), *escbuf = ast_str_thread_get(&modify2_buf, 100);
struct ast_str *typestr = ast_str_thread_get(&modify3_buf, 30);
int waschar = strncasecmp(column->type, "char", 4) == 0 ? 1 : 0;
int wasvarchar = strncasecmp(column->type, "varchar", 7) == 0 ? 1 : 0;
int res = 0;
struct mysql_conn *dbh;
if (!(dbh = find_database(database, 1))) {
return -1;
}
do {
if (type == RQ_CHAR || waschar || wasvarchar) {
if (wasvarchar) {
ast_str_set(&typestr, 0, "VARCHAR(%d)", len);
} else {
ast_str_set(&typestr, 0, "CHAR(%d)", len);
}
} else if (type == RQ_UINTEGER1) {
ast_str_set(&typestr, 0, "tinyint(3) unsigned");
} else if (type == RQ_INTEGER1) {
ast_str_set(&typestr, 0, "tinyint(4)");
} else if (type == RQ_UINTEGER2) {
ast_str_set(&typestr, 0, "smallint(5) unsigned");
} else if (type == RQ_INTEGER2) {
ast_str_set(&typestr, 0, "smallint(6)");
} else if (type == RQ_UINTEGER3) {
ast_str_set(&typestr, 0, "mediumint(8) unsigned");
} else if (type == RQ_INTEGER3) {
ast_str_set(&typestr, 0, "mediumint(8)");
} else if (type == RQ_UINTEGER4) {
ast_str_set(&typestr, 0, "int(10) unsigned");
} else if (type == RQ_INTEGER4) {
ast_str_set(&typestr, 0, "int(11)");
} else if (type == RQ_UINTEGER8) {
ast_str_set(&typestr, 0, "bigint(19) unsigned");
} else if (type == RQ_INTEGER8) {
ast_str_set(&typestr, 0, "bigint(20)");
} else if (type == RQ_DATETIME) {
ast_str_set(&typestr, 0, "datetime");
} else if (type == RQ_DATE) {
ast_str_set(&typestr, 0, "date");
} else if (type == RQ_FLOAT) {
ast_str_set(&typestr, 0, "FLOAT(%d,2)", len);
} else {
ast_log(LOG_ERROR, "Unknown type (should NEVER happen)\n");
res = -1;
break;
}
ast_str_set(&sql, 0, "ALTER TABLE %s MODIFY %s %s", tablename, column->name, ast_str_buffer(typestr));
if (!column->null) {
ast_str_append(&sql, 0, " NOT NULL");
}
if (!ast_strlen_zero(column->dflt)) {
size_t valsz;
ESCAPE_STRING(escbuf, column->dflt);
ast_str_append(&sql, 0, " DEFAULT '%s'", ast_str_buffer(escbuf));
}
if (!mysql_reconnect(dbh)) {
ast_log(LOG_ERROR, "Unable to add column: %s\n", ast_str_buffer(sql));
res = -1;
break;
}
/* Execution. */
if (mysql_real_query(&dbh->handle, ast_str_buffer(sql), ast_str_strlen(sql))) {
ast_log(LOG_WARNING, "MySQL RealTime: Failed to query database: %s\n", mysql_error(&dbh->handle));
ast_debug(1, "MySQL RealTime: Query: %s\n", ast_str_buffer(sql));
res = -1;
}
} while (0);
release_database(dbh);
return res;
}
#define PICK_WHICH_ALTER_ACTION(stringtype) \
if (table->database->requirements == RQ_WARN) { \
ast_log(LOG_WARNING, "Realtime table %s@%s: column '%s' may not be large enough for " \
"the required data length: %d (detected stringtype)\n", \
tablename, database, column->name, size); \
res = -1; \
} else if (table->database->requirements == RQ_CREATECLOSE && modify_mysql(database, tablename, column, type, size) == 0) { \
table_altered = 1; \
} else if (table->database->requirements == RQ_CREATECHAR && modify_mysql(database, tablename, column, RQ_CHAR, size) == 0) { \
table_altered = 1; \
} else { \
res = -1; \
}
static int require_mysql(const char *database, const char *tablename, va_list ap)
{
struct columns *column;
struct tables *table = find_table(database, tablename);
char *elm;
int type, size, res = 0, table_altered = 0;
if (!table) {
ast_log(LOG_WARNING, "Table %s not found in database. This table should exist if you're using realtime.\n", tablename);
return -1;
}
while ((elm = va_arg(ap, char *))) {
type = va_arg(ap, require_type);
size = va_arg(ap, int);
AST_LIST_TRAVERSE(&table->columns, column, list) {
if (strcmp(column->name, elm) == 0) {
/* Char can hold anything, as long as it is large enough */
if (strncmp(column->type, "char", 4) == 0 || strncmp(column->type, "varchar", 7) == 0) {
if ((size > column->len) && column->len != -1) {
if (table->database->requirements == RQ_WARN) {
ast_log(LOG_WARNING, "Realtime table %s@%s: Column '%s' should be at least %d long, but is only %d long.\n", database, tablename, column->name, size, column->len);
res = -1;
} else if (modify_mysql(database, tablename, column, type, size) == 0) {
table_altered = 1;
} else {
res = -1;
}
}
} else if (strcasestr(column->type, "unsigned")) {
if (!ast_rq_is_int(type)) {
if (table->database->requirements == RQ_WARN) {
ast_log(LOG_WARNING, "Realtime table %s@%s: column '%s' cannot be type '%s' (need %s)\n",
database, tablename, column->name, column->type,
type == RQ_CHAR ? "char" : type == RQ_FLOAT ? "float" :
type == RQ_DATETIME ? "datetime" : type == RQ_DATE ? "date" : "a rather stiff drink");
res = -1;
} else if (table->database->requirements == RQ_CREATECLOSE && modify_mysql(database, tablename, column, type, size) == 0) {
table_altered = 1;
} else if (table->database->requirements == RQ_CREATECHAR && modify_mysql(database, tablename, column, RQ_CHAR, size) == 0) {
table_altered = 1;
} else {
res = -1;
}
} else if (strncasecmp(column->type, "tinyint", 1) == 0) {
if (type != RQ_UINTEGER1) {
PICK_WHICH_ALTER_ACTION(unsigned tinyint)
}
} else if (strncasecmp(column->type, "smallint", 1) == 0) {
if (type != RQ_UINTEGER1 && type != RQ_INTEGER1 && type != RQ_UINTEGER2) {
PICK_WHICH_ALTER_ACTION(unsigned smallint)
}
} else if (strncasecmp(column->type, "mediumint", 1) == 0) {
if (type != RQ_UINTEGER1 && type != RQ_INTEGER1 &&
type != RQ_UINTEGER2 && type != RQ_INTEGER2 &&
type != RQ_UINTEGER3) {
PICK_WHICH_ALTER_ACTION(unsigned mediumint)
}
} else if (strncasecmp(column->type, "int", 1) == 0) {
if (type != RQ_UINTEGER1 && type != RQ_INTEGER1 &&
type != RQ_UINTEGER2 && type != RQ_INTEGER2 &&
type != RQ_UINTEGER3 && type != RQ_INTEGER3 &&
type != RQ_UINTEGER4) {
PICK_WHICH_ALTER_ACTION(unsigned int)
}
} else if (strncasecmp(column->type, "bigint", 1) == 0) {
if (type != RQ_UINTEGER1 && type != RQ_INTEGER1 &&
type != RQ_UINTEGER2 && type != RQ_INTEGER2 &&
type != RQ_UINTEGER3 && type != RQ_INTEGER3 &&
type != RQ_UINTEGER4 && type != RQ_INTEGER4 &&
type != RQ_UINTEGER8) {
PICK_WHICH_ALTER_ACTION(unsigned bigint)
}
}
} else if (strcasestr(column->type, "int")) {
if (!ast_rq_is_int(type)) {
if (table->database->requirements == RQ_WARN) {
ast_log(LOG_WARNING, "Realtime table %s@%s: column '%s' cannot be type '%s' (need %s)\n",
database, tablename, column->name, column->type,
type == RQ_CHAR ? "char" : type == RQ_FLOAT ? "float" :
type == RQ_DATETIME ? "datetime" : type == RQ_DATE ? "date" :
"to get a life, rather than writing silly error messages");
res = -1;
} else if (table->database->requirements == RQ_CREATECLOSE && modify_mysql(database, tablename, column, type, size) == 0) {
table_altered = 1;
} else if (table->database->requirements == RQ_CREATECHAR && modify_mysql(database, tablename, column, RQ_CHAR, size) == 0) {
table_altered = 1;
} else {
res = -1;
}
} else if (strncasecmp(column->type, "tinyint", 1) == 0) {
if (type != RQ_INTEGER1) {
PICK_WHICH_ALTER_ACTION(tinyint)
}
} else if (strncasecmp(column->type, "smallint", 1) == 0) {
if (type != RQ_UINTEGER1 && type != RQ_INTEGER1 && type != RQ_INTEGER2) {
PICK_WHICH_ALTER_ACTION(smallint)
}
} else if (strncasecmp(column->type, "mediumint", 1) == 0) {
if (type != RQ_UINTEGER1 && type != RQ_INTEGER1 &&
type != RQ_UINTEGER2 && type != RQ_INTEGER2 &&
type != RQ_INTEGER3) {
PICK_WHICH_ALTER_ACTION(mediumint)
}
} else if (strncasecmp(column->type, "int", 1) == 0) {
if (type != RQ_UINTEGER1 && type != RQ_INTEGER1 &&
type != RQ_UINTEGER2 && type != RQ_INTEGER2 &&
type != RQ_UINTEGER3 && type != RQ_INTEGER3 &&
type != RQ_INTEGER4) {
PICK_WHICH_ALTER_ACTION(int)
}
} else if (strncasecmp(column->type, "bigint", 1) == 0) {
if (type != RQ_UINTEGER1 && type != RQ_INTEGER1 &&
type != RQ_UINTEGER2 && type != RQ_INTEGER2 &&
type != RQ_UINTEGER3 && type != RQ_INTEGER3 &&
type != RQ_UINTEGER4 && type != RQ_INTEGER4 &&
type != RQ_INTEGER8) {
PICK_WHICH_ALTER_ACTION(bigint)
}
}
} else if (strncmp(column->type, "float", 5) == 0 && !ast_rq_is_int(type) && type != RQ_FLOAT) {
if (table->database->requirements == RQ_WARN) {
ast_log(LOG_WARNING, "Realtime table %s@%s: Column %s cannot be a %s\n", tablename, database, column->name, column->type);
res = -1;
} else if (table->database->requirements == RQ_CREATECLOSE && modify_mysql(database, tablename, column, type, size) == 0) {
table_altered = 1;
} else if (table->database->requirements == RQ_CREATECHAR && modify_mysql(database, tablename, column, RQ_CHAR, size) == 0) {
table_altered = 1;
} else {
res = -1;
}
} else if ((strncmp(column->type, "datetime", 8) == 0 || strncmp(column->type, "timestamp", 9)) && type != RQ_DATETIME) {
if (table->database->requirements == RQ_WARN) {
ast_log(LOG_WARNING, "Realtime table %s@%s: Column %s cannot be a %s\n", tablename, database, column->name, column->type);
res = -1;
} else if (table->database->requirements == RQ_CREATECLOSE && modify_mysql(database, tablename, column, type, size) == 0) {
table_altered = 1;
} else if (table->database->requirements == RQ_CREATECHAR && modify_mysql(database, tablename, column, RQ_CHAR, size) == 0) {
table_altered = 1;
} else {
res = -1;
}
} else if ((strncmp(column->type, "date", 4) == 0) && type != RQ_DATE) {
if (table->database->requirements == RQ_WARN) {
ast_log(LOG_WARNING, "Realtime table %s@%s: Column %s cannot be a %s\n", tablename, database, column->name, column->type);
res = -1;
} else if (table->database->requirements == RQ_CREATECLOSE && modify_mysql(database, tablename, column, type, size) == 0) {
table_altered = 1;
} else if (table->database->requirements == RQ_CREATECHAR && modify_mysql(database, tablename, column, RQ_CHAR, size) == 0) {
table_altered = 1;
} else {
res = -1;
}
} else { /* Other, possibly unsupported types? */
if (table->database->requirements == RQ_WARN) {
ast_log(LOG_WARNING, "Possibly unsupported column type '%s' on column '%s'\n", column->type, column->name);
res = -1;
} else if (table->database->requirements == RQ_CREATECLOSE && modify_mysql(database, tablename, column, type, size) == 0) {
table_altered = 1;
} else if (table->database->requirements == RQ_CREATECHAR && modify_mysql(database, tablename, column, RQ_CHAR, size) == 0) {
table_altered = 1;
} else {
}
}
break;
}
}
if (!column) {
if (table->database->requirements == RQ_WARN) {
ast_log(LOG_WARNING, "Table %s requires a column '%s' of size '%d', but no such column exists.\n", tablename, elm, size);
} else {
struct ast_str *sql = ast_str_thread_get(&modify_buf, 100), *fieldtype = ast_str_thread_get(&modify3_buf, 16);
if (table->database->requirements == RQ_CREATECHAR || type == RQ_CHAR) {
ast_str_set(&fieldtype, 0, "CHAR(%d)", size);
} else if (type == RQ_UINTEGER1 || type == RQ_UINTEGER2 || type == RQ_UINTEGER3 || type == RQ_UINTEGER4 || type == RQ_UINTEGER8) {
if (type == RQ_UINTEGER1) {
ast_str_set(&fieldtype, 0, "TINYINT(3) UNSIGNED");
} else if (type == RQ_UINTEGER2) {
ast_str_set(&fieldtype, 0, "SMALLINT(5) UNSIGNED");
} else if (type == RQ_UINTEGER3) {
ast_str_set(&fieldtype, 0, "MEDIUMINT(8) UNSIGNED");
} else if (type == RQ_UINTEGER4) {
ast_str_set(&fieldtype, 0, "INT(10) UNSIGNED");
} else if (type == RQ_UINTEGER8) {
ast_str_set(&fieldtype, 0, "BIGINT(20) UNSIGNED");
} else {
ast_log(LOG_WARNING, "Somebody should check this code for a rather large bug... it's about to squash Tokyo.\n");
continue;
}
} else if (ast_rq_is_int(type)) {
if (type == RQ_INTEGER1) {
ast_str_set(&fieldtype, 0, "TINYINT(3)");
} else if (type == RQ_INTEGER2) {
ast_str_set(&fieldtype, 0, "SMALLINT(5)");
} else if (type == RQ_INTEGER3) {
ast_str_set(&fieldtype, 0, "MEDIUMINT(8)");
} else if (type == RQ_INTEGER4) {
ast_str_set(&fieldtype, 0, "INT(10)");
} else if (type == RQ_INTEGER8) {
ast_str_set(&fieldtype, 0, "BIGINT(20)");
} else {
ast_log(LOG_WARNING, "Somebody should check this code for a rather large bug... it's about to eat Cincinnati.\n");
continue;
}
} else if (type == RQ_FLOAT) {
ast_str_set(&fieldtype, 0, "FLOAT");
} else if (type == RQ_DATE) {
ast_str_set(&fieldtype, 0, "DATE");
} else if (type == RQ_DATETIME) {
ast_str_set(&fieldtype, 0, "DATETIME");
} else {
continue;
}
ast_str_set(&sql, 0, "ALTER TABLE %s ADD COLUMN %s %s", tablename, elm, ast_str_buffer(fieldtype));
ast_mutex_lock(&table->database->lock);
if (!mysql_reconnect(table->database)) {
ast_mutex_unlock(&table->database->lock);
ast_log(LOG_ERROR, "Unable to add column: %s\n", ast_str_buffer(sql));
continue;
}
/* Execution. */
if (mysql_real_query(&table->database->handle, ast_str_buffer(sql), ast_str_strlen(sql))) {
ast_log(LOG_WARNING, "MySQL RealTime: Failed to query database. Check debug for more info.\n");
ast_debug(1, "MySQL RealTime: Query: %s\n", ast_str_buffer(sql));
ast_debug(1, "MySQL RealTime: Query Failed because: %s\n", mysql_error(&table->database->handle));
} else {
table_altered = 1;
}
}
}
}
release_table(table);
/* If we altered the table, we must refresh the cache */
if (table_altered) {
unload_mysql(database, tablename);
release_table(find_table(database, tablename));
}
return res;
}
static struct ast_config_engine mysql_engine = {
.name = "mysql",
.load_func = config_mysql,
.realtime_func = realtime_mysql,
.realtime_multi_func = realtime_multi_mysql,
.store_func = store_mysql,
.destroy_func = destroy_mysql,
.update_func = update_mysql,
.update2_func = update2_mysql,
.require_func = require_mysql,
.unload_func = unload_mysql,
};
static int load_module(void)
{
parse_config(0);
ast_config_engine_register(&mysql_engine);
if (option_verbose > 1)
ast_verbose(VERBOSE_PREFIX_2 "MySQL RealTime driver loaded.\n");
ast_cli_register_multiple(cli_realtime_mysql_status, sizeof(cli_realtime_mysql_status) / sizeof(struct ast_cli_entry));
return 0;
}
static int unload_module(void)
{
struct mysql_conn *cur;
struct tables *table;
ast_cli_unregister_multiple(cli_realtime_mysql_status, sizeof(cli_realtime_mysql_status) / sizeof(struct ast_cli_entry));
ast_config_engine_deregister(&mysql_engine);
if (option_verbose > 1)
ast_verbose(VERBOSE_PREFIX_2 "MySQL RealTime unloaded.\n");
ast_module_user_hangup_all();
usleep(1);
AST_RWLIST_WRLOCK(&databases);
while ((cur = AST_RWLIST_REMOVE_HEAD(&databases, list))) {
mysql_close(&cur->handle);
ast_mutex_destroy(&cur->lock);
ast_free(cur);
}
AST_RWLIST_UNLOCK(&databases);
/* Destroy cached table info */
AST_LIST_LOCK(&mysql_tables);
while ((table = AST_LIST_REMOVE_HEAD(&mysql_tables, list))) {
destroy_table(table);
}
AST_LIST_UNLOCK(&mysql_tables);
return 0;
}
static int reload(void)
{
parse_config(1);
if (option_verbose > 1) {
ast_verb(2, "MySQL RealTime reloaded.\n");
}
return 0;
}
static int parse_config(int reload)
{
struct ast_config *config = NULL;
struct ast_flags config_flags = { reload ? CONFIG_FLAG_FILEUNCHANGED : 0 };
const char *catg;
struct mysql_conn *cur;
if ((config = ast_config_load(RES_CONFIG_MYSQL_CONF, config_flags)) == CONFIG_STATUS_FILEMISSING) {
return 0;
} else if (config == CONFIG_STATUS_FILEUNCHANGED) {
return 0;
} else if (config == CONFIG_STATUS_FILEINVALID) {
ast_log(LOG_ERROR, "Not %sloading " RES_CONFIG_MYSQL_CONF "\n", reload ? "re" : "");
}
AST_RWLIST_WRLOCK(&databases);
for (catg = ast_category_browse(config, NULL); catg; catg = ast_category_browse(config, catg)) {
/* Does this category already exist? */
AST_RWLIST_TRAVERSE(&databases, cur, list) {
if (!strcmp(cur->unique_name, catg)) {
break;
}
}
if (!cur) {
if (!(cur = ast_calloc(1, sizeof(*cur) + strlen(catg) + 1))) {
ast_log(LOG_WARNING, "Could not allocate space for MySQL database '%s'\n", catg);
continue;
}
strcpy(cur->unique_name, catg); /* SAFE */
ast_mutex_init(&cur->lock);
AST_RWLIST_INSERT_TAIL(&databases, cur, list);
}
load_mysql_config(config, catg, cur);
}
AST_RWLIST_UNLOCK(&databases);
ast_config_destroy(config);
return 0;
}
static int load_mysql_config(struct ast_config *config, const char *category, struct mysql_conn *conn)
{
const char *s;
if (!(s = ast_variable_retrieve(config, category, "dbuser"))) {
ast_log(LOG_WARNING, "MySQL RealTime: No database user found, using 'asterisk' as default.\n");
s = "asterisk";
}
ast_copy_string(conn->user, s, sizeof(conn->user));
if (!(s = ast_variable_retrieve(config, category, "dbpass"))) {
ast_log(LOG_WARNING, "MySQL RealTime: No database password found, using 'asterisk' as default.\n");
s = "asterisk";
}
ast_copy_string(conn->pass, s, sizeof(conn->pass));
if (!(s = ast_variable_retrieve(config, category, "dbhost"))) {
ast_log(LOG_WARNING, "MySQL RealTime: No database host found, using localhost via socket.\n");
s = "";
}
ast_copy_string(conn->host, s, sizeof(conn->host));
if (!(s = ast_variable_retrieve(config, category, "dbname"))) {
ast_log(LOG_WARNING, "MySQL RealTime: No database name found, using 'asterisk' as default.\n");
s = "asterisk";
}
ast_copy_string(conn->name, s, sizeof(conn->name));
if (!(s = ast_variable_retrieve(config, category, "dbport"))) {
ast_log(LOG_WARNING, "MySQL RealTime: No database port found, using 3306 as default.\n");
conn->port = 3306;
} else
conn->port = atoi(s);
if (!(s = ast_variable_retrieve(config, category, "dbsock"))) {
if (ast_strlen_zero(conn->host)) {
char *paths[3] = { "/tmp/mysql.sock", "/var/lib/mysql/mysql.sock", "/var/run/mysqld/mysqld.sock" };
struct stat st;
int i;
for (i = 0; i < 3; i++) {
if (!stat(paths[i], &st)) {
ast_log(LOG_WARNING, "MySQL RealTime: No database socket found, using '%s' as default.\n", paths[i]);
ast_copy_string(conn->sock, paths[i], sizeof(conn->sock));
}
}
if (i == 3) {
ast_log(LOG_WARNING, "MySQL RealTime: No database socket found (and unable to detect a suitable path).\n");
return 0;
}
}
} else
ast_copy_string(conn->sock, s, sizeof(conn->sock));
if (!(s = ast_variable_retrieve(config, category, "requirements"))) {
ast_log(LOG_WARNING, "MySQL realtime: no requirements setting found, using 'warn' as default.\n");
conn->requirements = RQ_WARN;
} else if (!strcasecmp(s, "createclose")) {
conn->requirements = RQ_CREATECLOSE;
} else if (!strcasecmp(s, "createchar")) {
conn->requirements = RQ_CREATECHAR;
} else if (!strcasecmp(s, "warn")) {
conn->requirements = RQ_WARN;
} else {
ast_log(LOG_WARNING, "MySQL realtime: unrecognized requirements setting '%s', using 'warn'\n", s);
conn->requirements = RQ_WARN;
}
if (!ast_strlen_zero(conn->host)) {
ast_debug(1, "MySQL RealTime host: %s\n", conn->host);
ast_debug(1, "MySQL RealTime port: %i\n", conn->port);
} else
ast_debug(1, "MySQL RealTime socket: %s\n", conn->sock);
ast_debug(1, "MySQL RealTime database name: %s\n", conn->name);
ast_debug(1, "MySQL RealTime user: %s\n", conn->user);
ast_debug(1, "MySQL RealTime password: %s\n", conn->pass);
return 1;
}
static int mysql_reconnect(struct mysql_conn *conn)
{
#ifdef MYSQL_OPT_RECONNECT
my_bool trueval = 1;
#endif
/* mutex lock should have been locked before calling this function. */
reconnect_tryagain:
if ((!conn->connected) && (!ast_strlen_zero(conn->host) || conn->sock) && !ast_strlen_zero(conn->user) && !ast_strlen_zero(conn->name)) {
if (!mysql_init(&conn->handle)) {
ast_log(LOG_WARNING, "MySQL RealTime: Insufficient memory to allocate MySQL resource.\n");
conn->connected = 0;
return 0;
}
if (mysql_real_connect(&conn->handle, conn->host, conn->user, conn->pass, conn->name, conn->port, conn->sock, 0)) {
#ifdef MYSQL_OPT_RECONNECT
/* The default is no longer to automatically reconnect on failure,
* (as of 5.0.3) so we have to set that option here. */
mysql_options(&conn->handle, MYSQL_OPT_RECONNECT, &trueval);
#endif
ast_debug(1, "MySQL RealTime: Successfully connected to database.\n");
conn->connected = 1;
conn->connect_time = time(NULL);
return 1;
} else {
ast_log(LOG_ERROR, "MySQL RealTime: Failed to connect database server %s on %s (err %d). Check debug for more info.\n", conn->name, !ast_strlen_zero(conn->host) ? conn->host : conn->sock, mysql_errno(&conn->handle));
ast_debug(1, "MySQL RealTime: Cannot Connect (%d): %s\n", mysql_errno(&conn->handle), mysql_error(&conn->handle));
conn->connected = 0;
return 0;
}
} else {
/* MySQL likes to return an error, even if it reconnects successfully.
* So the postman pings twice. */
if (mysql_ping(&conn->handle) != 0 && (usleep(1) + 2 > 0) && mysql_ping(&conn->handle) != 0) {
conn->connected = 0;
ast_log(LOG_ERROR, "MySQL RealTime: Ping failed (%d). Trying an explicit reconnect.\n", mysql_errno(&conn->handle));
ast_debug(1, "MySQL RealTime: Server Error (%d): %s\n", mysql_errno(&conn->handle), mysql_error(&conn->handle));
goto reconnect_tryagain;
}
conn->connected = 1;
conn->connect_time = time(NULL);
if (mysql_select_db(&conn->handle, conn->name) != 0) {
ast_log(LOG_WARNING, "MySQL RealTime: Unable to select database: %s. Still Connected (%u) - %s.\n", conn->name, mysql_errno(&conn->handle), mysql_error(&conn->handle));
return 0;
}
ast_debug(1, "MySQL RealTime: Connection okay.\n");
return 1;
}
}
static char *handle_cli_realtime_mysql_cache(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
struct tables *cur;
int l, which;
char *ret = NULL;
switch (cmd) {
case CLI_INIT:
e->command = "realtime mysql cache";
e->usage =
"Usage: realtime mysql cache [<database> <table>]\n"
" Shows table cache for the MySQL RealTime driver\n";
return NULL;
case CLI_GENERATE:
if (a->argc < 4 || a->argc > 5) {
return NULL;
}
l = strlen(a->word);
which = 0;
if (a->argc == 5) {
AST_LIST_LOCK(&mysql_tables);
AST_LIST_TRAVERSE(&mysql_tables, cur, list) {
if (!strcasecmp(a->argv[3], cur->database->unique_name) && !strncasecmp(a->word, cur->name, l) && ++which > a->n) {
ret = ast_strdup(cur->name);
break;
}
}
AST_LIST_UNLOCK(&mysql_tables);
} else {
struct mysql_conn *cur;
AST_RWLIST_RDLOCK(&databases);
AST_RWLIST_TRAVERSE(&databases, cur, list) {
if (!strncasecmp(a->word, cur->unique_name, l) && ++which > a->n) {
ret = ast_strdup(cur->unique_name);
break;
}
}
AST_RWLIST_UNLOCK(&databases);
}
return ret;
}
if (a->argc == 3) {
/* List of tables */
AST_LIST_LOCK(&mysql_tables);
AST_LIST_TRAVERSE(&mysql_tables, cur, list) {
ast_cli(a->fd, "%20.20s %s\n", cur->database->unique_name, cur->name);
}
AST_LIST_UNLOCK(&mysql_tables);
} else if (a->argc == 4) {
int found = 0;
/* List of tables */
AST_LIST_LOCK(&mysql_tables);
AST_LIST_TRAVERSE(&mysql_tables, cur, list) {
if (!strcasecmp(cur->database->unique_name, a->argv[3])) {
ast_cli(a->fd, "%s\n", cur->name);
found = 1;
}
}
AST_LIST_UNLOCK(&mysql_tables);
if (!found) {
ast_cli(a->fd, "No tables cached within %s database\n", a->argv[3]);
}
} else if (a->argc == 5) {
/* List of columns */
if ((cur = find_table(a->argv[3], a->argv[4]))) {
struct columns *col;
ast_cli(a->fd, "Columns for Table Cache '%s':\n", a->argv[3]);
ast_cli(a->fd, "%-20.20s %-20.20s %-3.3s\n", "Name", "Type", "Len");
AST_LIST_TRAVERSE(&cur->columns, col, list) {
ast_cli(a->fd, "%-20.20s %-20.20s %3d\n", col->name, col->type, col->len);
}
ast_mutex_unlock(&cur->lock);
} else {
ast_cli(a->fd, "No such table '%s'\n", a->argv[3]);
}
}
return CLI_SUCCESS;
}
static char *handle_cli_realtime_mysql_status(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
char status[256], status2[100] = "", type[20];
char *ret = NULL;
int ctime = 0, found = 0;
struct mysql_conn *cur;
int l = 0, which = 0;
switch (cmd) {
case CLI_INIT:
e->command = "realtime mysql status";
e->usage =
"Usage: realtime mysql status [<database>]\n"
" Shows connection information for the MySQL RealTime driver\n";
return NULL;
case CLI_GENERATE:
if (a->argc == 4) {
AST_RWLIST_RDLOCK(&databases);
AST_RWLIST_TRAVERSE(&databases, cur, list) {
if (!strncasecmp(a->word, cur->unique_name, l) && ++which > a->n) {
ret = ast_strdup(cur->unique_name);
break;
}
}
AST_RWLIST_UNLOCK(&databases);
}
return ret;
}
if (a->argc != 3)
return CLI_SHOWUSAGE;
AST_RWLIST_RDLOCK(&databases);
AST_RWLIST_TRAVERSE(&databases, cur, list) {
if (a->argc == 3 || (a->argc == 4 && !strcasecmp(a->argv[3], cur->unique_name))) {
found = 1;
if (mysql_reconnect(cur)) {
snprintf(type, sizeof(type), "connected to");
ctime = time(NULL) - cur->connect_time;
} else {
snprintf(type, sizeof(type), "configured for");
ctime = -1;
}
if (!ast_strlen_zero(cur->host)) {
snprintf(status, sizeof(status), "%s %s %s@%s, port %d", cur->unique_name, type, cur->name, cur->host, cur->port);
} else {
snprintf(status, sizeof(status), "%s %s %s on socket file %s", cur->unique_name, type, cur->name, cur->sock);
}
if (!ast_strlen_zero(cur->user)) {
snprintf(status2, sizeof(status2), " with username %s", cur->user);
} else {
status2[0] = '\0';
}
if (ctime > 31536000) {
ast_cli(a->fd, "%s%s for %.1f years.\n", status, status2, (double)ctime / 31536000.0);
} else if (ctime > 86400 * 30) {
ast_cli(a->fd, "%s%s for %d days.\n", status, status2, ctime / 86400);
} else if (ctime > 86400) {
ast_cli(a->fd, "%s%s for %d days, %d hours.\n", status, status2, ctime / 86400, (ctime % 86400) / 3600);
} else if (ctime > 3600) {
ast_cli(a->fd, "%s%s for %d hours, %d minutes.\n", status, status2, ctime / 3600, (ctime % 3600) / 60);
} else if (ctime > 60) {
ast_cli(a->fd, "%s%s for %d minutes.\n", status, status2, ctime / 60);
} else if (ctime > -1) {
ast_cli(a->fd, "%s%s for %d seconds.\n", status, status2, ctime);
} else {
ast_cli(a->fd, "%s%s.\n", status, status2);
}
}
}
AST_RWLIST_UNLOCK(&databases);
if (!found) {
ast_cli(a->fd, "No connections configured.\n");
}
return CLI_SUCCESS;
}
AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_DEFAULT, "MySQL RealTime Configuration Driver",
.load = load_module,
.unload = unload_module,
.reload = reload,
);
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