/*
* $Id: domain_mod.c 1882 2007-03-21 14:07:08Z miconda $
*
* Domain module
*
* Copyright (C) 2002-2003 Juha Heinanen
*
* This file is part of openser, a free SIP server.
*
* openser 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
*
* openser 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* History:
* -------
* 2003-03-11: New module interface (janakj)
* 2003-03-16: flags export parameter added (janakj)
* 2003-04-05: default_uri #define used (jiri)
* 2003-04-06: db connection closed in mod_init (janakj)
* 2004-06-06: updated to the new DB api, cleanup: static dbf & handler,
* calls to domain_db_{bind,init,close,ver} (andrei)
* 2006-01-22: added is_domain_local(variable) function (dan)
*
*/
#include "domain_mod.h"
#include <stdio.h>
#include "../../mem/shm_mem.h"
#include "../../mem/mem.h"
#include "../../sr_module.h"
#include "../../items.h"
#include "domain.h"
#include "mi.h"
#include "unixsock.h"
#include "hash.h"
/*
* Module management function prototypes
*/
static int mod_init(void);
static void destroy(void);
static int child_init(int rank);
static int mi_child_init();
static int parameter_fixup(void** param, int param_no);
MODULE_VERSION
/*
* Version of domain table required by the module,
* increment this value if you change the table in
* an backwards incompatible way
*/
#define TABLE_VERSION 1
#define DOMAIN_TABLE "domain"
#define DOMAIN_TABLE_LEN (sizeof(DOMAIN_TABLE) - 1)
#define DOMAIN_COL "domain"
#define DOMAIN_COL_LEN (sizeof(DOMAIN_COL) - 1)
/*
* Module parameter variables
*/
static str db_url = {DEFAULT_RODB_URL, DEFAULT_RODB_URL_LEN};
int db_mode = 0; /* Database usage mode: 0 = no cache, 1 = cache */
str domain_table = {DOMAIN_TABLE, DOMAIN_TABLE_LEN}; /* Name of domain table */
str domain_col = {DOMAIN_COL, DOMAIN_COL_LEN}; /* Name of domain column */
/*
* Other module variables
*/
struct domain_list ***hash_table = 0; /* Pointer to current hash table pointer */
struct domain_list **hash_table_1 = 0; /* Pointer to hash table 1 */
struct domain_list **hash_table_2 = 0; /* Pointer to hash table 2 */
/*
* Exported functions
*/
static cmd_export_t cmds[] = {
{"is_from_local", is_from_local, 0, 0,
REQUEST_ROUTE|BRANCH_ROUTE|FAILURE_ROUTE},
{"is_uri_host_local", is_uri_host_local, 0, 0,
REQUEST_ROUTE|BRANCH_ROUTE|FAILURE_ROUTE},
{"is_domain_local", w_is_domain_local, 1, parameter_fixup,
REQUEST_ROUTE|FAILURE_ROUTE|BRANCH_ROUTE},
{0, 0, 0, 0, 0}
};
/*
* Exported parameters
*/
static param_export_t params[] = {
{"db_url", STR_PARAM, &db_url.s },
{"db_mode", INT_PARAM, &db_mode },
{"domain_table", STR_PARAM, &domain_table.s},
{"domain_col", STR_PARAM, &domain_col.s },
{0, 0, 0}
};
/*
* Exported MI functions
*/
static mi_export_t mi_cmds[] = {
{ MI_DOMAIN_RELOAD, mi_domain_reload, MI_NO_INPUT_FLAG, 0, mi_child_init },
{ MI_DOMAIN_DUMP, mi_domain_dump, MI_NO_INPUT_FLAG, 0, 0 },
{ 0, 0, 0, 0, 0}
};
/*
* Module interface
*/
struct module_exports exports = {
"domain",
DEFAULT_DLFLAGS, /* dlopen flags */
cmds, /* Exported functions */
params, /* Exported parameters */
0, /* exported statistics */
mi_cmds, /* exported MI functions */
0, /* exported pseudo-variables */
mod_init, /* module initialization function */
0, /* response function*/
destroy, /* destroy function */
child_init /* per-child init function */
};
static int mod_init(void)
{
int i, ver;
DBG("domain - initializing\n");
db_url.len = strlen(db_url.s);
domain_table.len = strlen(domain_table.s);
domain_col.len = strlen(domain_col.s);
/* Check if database module has been loaded */
if (domain_db_bind(db_url.s)<0) return -1;
/* Check if cache needs to be loaded from domain table */
if (db_mode != 0) {
if (domain_db_init(db_url.s)<0) return -1;
/* Check table version */
ver = domain_db_ver(&domain_table);
if (ver < 0) {
LOG(L_ERR, "ERROR: domain:mod_init(): "
"error while querying table version\n");
goto error;
} else if (ver < TABLE_VERSION) {
LOG(L_ERR, "ERROR: domain:mod_init(): invalid table"
" version (use openser_mysql.sh reinstall)\n");
goto error;
}
if (init_domain_unixsock() < 0) {
LOG(L_ERR, "ERROR: domain:mod_init(): error while initializing"
" unix socket interface\n");
goto error;
}
/* Initializing hash tables and hash table variable */
hash_table_1 = (struct domain_list **)shm_malloc
(sizeof(struct domain_list *) * DOM_HASH_SIZE);
if (hash_table_1 == 0) {
LOG(L_ERR, "ERROR: domain: mod_init(): "
"No memory for hash table\n");
goto error;
}
hash_table_2 = (struct domain_list **)shm_malloc
(sizeof(struct domain_list *) * DOM_HASH_SIZE);
if (hash_table_2 == 0) {
LOG(L_ERR, "ERROR: domain: mod_init():"
" No memory for hash table\n");
goto error;
}
for (i = 0; i < DOM_HASH_SIZE; i++) {
hash_table_1[i] = hash_table_2[i] = (struct domain_list *)0;
}
hash_table = (struct domain_list ***)shm_malloc
(sizeof(struct domain_list *));
*hash_table = hash_table_1;
if (reload_domain_table() == -1) {
LOG(L_CRIT, "ERROR: domain:mod_init():"
" Domain table reload failed\n");
goto error;
}
domain_db_close();
}
return 0;
error:
domain_db_close();
return -1;
}
static int child_init(int rank)
{
/* Check if database is needed by child */
if ((db_mode==0 && rank>0) || (db_mode!=0 && rank==PROC_UNIXSOCK)) {
if (domain_db_init(db_url.s)<0) {
LOG(L_ERR, "ERROR: domain:child_init():"
" Unable to connect to the database\n");
return -1;
}
}
return 0;
}
static int mi_child_init()
{
return domain_db_init(db_url.s);
}
static void destroy(void)
{
/* Destroy is called from the main process only,
* there is no need to close database here because
* it is closed in mod_init already
*/
if (hash_table) {
shm_free(hash_table);
hash_table = 0;
}
if (hash_table_1) {
hash_table_free(hash_table_1);
shm_free(hash_table_1);
hash_table_1 = 0;
}
if (hash_table_2) {
hash_table_free(hash_table_2);
shm_free(hash_table_2);
hash_table_2 = 0;
}
}
/*
* convert pvar parameter into parsed speudo variable specification
*/
static int parameter_fixup(void **param, int param_no)
{
xl_spec_t *sp;
if (*param && (param_no == 1)) {
sp = (xl_spec_t*)pkg_malloc(sizeof(xl_spec_t));
if (sp == 0) {
LOG(L_ERR,"domain:parameter_fixup(): no pkg memory left\n");
return -1;
}
if (xl_parse_spec((char*)*param, sp,
XL_THROW_ERROR|XL_DISABLE_MULTI|XL_DISABLE_COLORS)
== 0) {
LOG(L_ERR,"domain:parameter_fixup(): parsing of "
"pseudo variable %s failed!\n", (char*)*param);
pkg_free(sp);
return -1;
}
if (sp->type == XL_NULL) {
LOG(L_ERR, "permissions:double_fixup(): bad pseudo variable\n");
pkg_free(sp);
return -1;
}
*param = (void*)sp;
}
return 0;
}
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