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asterisk/res/res_config_odbc.c
Tilghman Lesher 74c78a9e3a Oops 
git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@129741 65c4cc65-6c06-0410-ace0-fbb531ad65f3
2008-07-10 21:19:48 +00:00

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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 1999 - 2005, Digium, Inc.
*
* Mark Spencer <markster@digium.com>
*
* Copyright (C) 2004 - 2005 Anthony Minessale II <anthmct@yahoo.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 odbc+odbc plugin for portable configuration engine
*
* \author Mark Spencer <markster@digium.com>
* \author Anthony Minessale II <anthmct@yahoo.com>
*
* \arg http://www.unixodbc.org
*/
/*** MODULEINFO
<depend>unixodbc</depend>
<depend>ltdl</depend>
<depend>res_odbc</depend>
***/
#include "asterisk.h"
ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include "asterisk/file.h"
#include "asterisk/logger.h"
#include "asterisk/channel.h"
#include "asterisk/pbx.h"
#include "asterisk/config.h"
#include "asterisk/module.h"
#include "asterisk/lock.h"
#include "asterisk/options.h"
#include "asterisk/res_odbc.h"
#include "asterisk/utils.h"
struct custom_prepare_struct {
const char *sql;
const char *extra;
va_list ap;
};
static SQLHSTMT custom_prepare(struct odbc_obj *obj, void *data)
{
int res, x = 1;
struct custom_prepare_struct *cps = data;
const char *newparam, *newval;
SQLHSTMT stmt;
va_list ap;
va_copy(ap, cps->ap);
res = SQLAllocHandle(SQL_HANDLE_STMT, obj->con, &stmt);
if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
ast_log(LOG_WARNING, "SQL Alloc Handle failed!\n");
return NULL;
}
res = SQLPrepare(stmt, (unsigned char *)cps->sql, SQL_NTS);
if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
ast_log(LOG_WARNING, "SQL Prepare failed![%s]\n", cps->sql);
SQLFreeHandle (SQL_HANDLE_STMT, stmt);
return NULL;
}
while ((newparam = va_arg(ap, const char *))) {
newval = va_arg(ap, const char *);
SQLBindParameter(stmt, x++, SQL_PARAM_INPUT, SQL_C_CHAR, SQL_CHAR, strlen(newval), 0, (void *)newval, 0, NULL);
}
va_end(ap);
if (!ast_strlen_zero(cps->extra))
SQLBindParameter(stmt, x++, SQL_PARAM_INPUT, SQL_C_CHAR, SQL_CHAR, strlen(cps->extra), 0, (void *)cps->extra, 0, NULL);
return stmt;
}
static struct ast_variable *realtime_odbc(const char *database, const char *table, va_list ap)
{
struct odbc_obj *obj;
SQLHSTMT stmt;
char sql[1024];
char coltitle[256];
char rowdata[2048];
char *op;
const char *newparam, *newval;
char *stringp;
char *chunk;
SQLSMALLINT collen;
int res;
int x;
struct ast_variable *var=NULL, *prev=NULL;
SQLULEN colsize;
SQLSMALLINT colcount=0;
SQLSMALLINT datatype;
SQLSMALLINT decimaldigits;
SQLSMALLINT nullable;
SQLLEN indicator;
va_list aq;
struct custom_prepare_struct cps = { .sql = sql };
va_copy(cps.ap, ap);
va_copy(aq, ap);
if (!table)
return NULL;
obj = ast_odbc_request_obj(database, 0);
if (!obj) {
ast_log(LOG_ERROR, "No database handle available with the name of '%s' (check res_odbc.conf)\n", database);
return NULL;
}
newparam = va_arg(aq, const char *);
if (!newparam) {
ast_odbc_release_obj(obj);
return NULL;
}
newval = va_arg(aq, const char *);
op = !strchr(newparam, ' ') ? " =" : "";
snprintf(sql, sizeof(sql), "SELECT * FROM %s WHERE %s%s ?%s", table, newparam, op,
strcasestr(newparam, "LIKE") && !ast_odbc_backslash_is_escape(obj) ? " ESCAPE '\\'" : "");
while((newparam = va_arg(aq, const char *))) {
op = !strchr(newparam, ' ') ? " =" : "";
snprintf(sql + strlen(sql), sizeof(sql) - strlen(sql), " AND %s%s ?%s", newparam, op,
strcasestr(newparam, "LIKE") && !ast_odbc_backslash_is_escape(obj) ? " ESCAPE '\\'" : "");
newval = va_arg(aq, const char *);
}
va_end(aq);
stmt = ast_odbc_prepare_and_execute(obj, custom_prepare, &cps);
if (!stmt) {
ast_odbc_release_obj(obj);
return NULL;
}
res = SQLNumResultCols(stmt, &colcount);
if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
ast_log(LOG_WARNING, "SQL Column Count error!\n[%s]\n\n", sql);
SQLFreeHandle (SQL_HANDLE_STMT, stmt);
ast_odbc_release_obj(obj);
return NULL;
}
res = SQLFetch(stmt);
if (res == SQL_NO_DATA) {
SQLFreeHandle (SQL_HANDLE_STMT, stmt);
ast_odbc_release_obj(obj);
return NULL;
}
if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
ast_log(LOG_WARNING, "SQL Fetch error!\n[%s]\n\n", sql);
SQLFreeHandle (SQL_HANDLE_STMT, stmt);
ast_odbc_release_obj(obj);
return NULL;
}
for (x = 0; x < colcount; x++) {
rowdata[0] = '\0';
collen = sizeof(coltitle);
res = SQLDescribeCol(stmt, x + 1, (unsigned char *)coltitle, sizeof(coltitle), &collen,
&datatype, &colsize, &decimaldigits, &nullable);
if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
ast_log(LOG_WARNING, "SQL Describe Column error!\n[%s]\n\n", sql);
if (var)
ast_variables_destroy(var);
ast_odbc_release_obj(obj);
return NULL;
}
indicator = 0;
res = SQLGetData(stmt, x + 1, SQL_CHAR, rowdata, sizeof(rowdata), &indicator);
if (indicator == SQL_NULL_DATA)
continue;
if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
ast_log(LOG_WARNING, "SQL Get Data error!\n[%s]\n\n", sql);
if (var)
ast_variables_destroy(var);
ast_odbc_release_obj(obj);
return NULL;
}
stringp = rowdata;
while(stringp) {
chunk = strsep(&stringp, ";");
if (!ast_strlen_zero(ast_strip(chunk))) {
if (prev) {
prev->next = ast_variable_new(coltitle, chunk);
if (prev->next)
prev = prev->next;
} else
prev = var = ast_variable_new(coltitle, chunk);
}
}
}
SQLFreeHandle(SQL_HANDLE_STMT, stmt);
ast_odbc_release_obj(obj);
return var;
}
static struct ast_config *realtime_multi_odbc(const char *database, const char *table, va_list ap)
{
struct odbc_obj *obj;
SQLHSTMT stmt;
char sql[1024];
char coltitle[256];
char rowdata[2048];
const char *initfield=NULL;
char *op;
const char *newparam, *newval;
char *stringp;
char *chunk;
SQLSMALLINT collen;
int res;
int x;
struct ast_variable *var=NULL;
struct ast_config *cfg=NULL;
struct ast_category *cat=NULL;
struct ast_realloca ra;
SQLULEN colsize;
SQLSMALLINT colcount=0;
SQLSMALLINT datatype;
SQLSMALLINT decimaldigits;
SQLSMALLINT nullable;
SQLLEN indicator;
struct custom_prepare_struct cps = { .sql = sql };
va_list aq;
va_copy(cps.ap, ap);
va_copy(aq, ap);
if (!table)
return NULL;
memset(&ra, 0, sizeof(ra));
obj = ast_odbc_request_obj(database, 0);
if (!obj)
return NULL;
newparam = va_arg(aq, const char *);
if (!newparam) {
ast_odbc_release_obj(obj);
return NULL;
}
initfield = ast_strdupa(newparam);
if ((op = strchr(initfield, ' ')))
*op = '\0';
newval = va_arg(aq, const char *);
op = !strchr(newparam, ' ') ? " =" : "";
snprintf(sql, sizeof(sql), "SELECT * FROM %s WHERE %s%s ?%s", table, newparam, op,
strcasestr(newparam, "LIKE") && !ast_odbc_backslash_is_escape(obj) ? " ESCAPE '\\'" : "");
while((newparam = va_arg(aq, const char *))) {
op = !strchr(newparam, ' ') ? " =" : "";
snprintf(sql + strlen(sql), sizeof(sql) - strlen(sql), " AND %s%s ?%s", newparam, op,
strcasestr(newparam, "LIKE") && !ast_odbc_backslash_is_escape(obj) ? " ESCAPE '\\'" : "");
newval = va_arg(aq, const char *);
}
if (initfield)
snprintf(sql + strlen(sql), sizeof(sql) - strlen(sql), " ORDER BY %s", initfield);
va_end(aq);
stmt = ast_odbc_prepare_and_execute(obj, custom_prepare, &cps);
if (!stmt) {
ast_odbc_release_obj(obj);
return NULL;
}
res = SQLNumResultCols(stmt, &colcount);
if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
ast_log(LOG_WARNING, "SQL Column Count error!\n[%s]\n\n", sql);
SQLFreeHandle(SQL_HANDLE_STMT, stmt);
ast_odbc_release_obj(obj);
return NULL;
}
cfg = ast_config_new();
if (!cfg) {
ast_log(LOG_WARNING, "Out of memory!\n");
SQLFreeHandle(SQL_HANDLE_STMT, stmt);
ast_odbc_release_obj(obj);
return NULL;
}
while ((res=SQLFetch(stmt)) != SQL_NO_DATA) {
var = NULL;
if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
ast_log(LOG_WARNING, "SQL Fetch error!\n[%s]\n\n", sql);
continue;
}
cat = ast_category_new("");
if (!cat) {
ast_log(LOG_WARNING, "Out of memory!\n");
continue;
}
for (x=0;x<colcount;x++) {
rowdata[0] = '\0';
collen = sizeof(coltitle);
res = SQLDescribeCol(stmt, x + 1, (unsigned char *)coltitle, sizeof(coltitle), &collen,
&datatype, &colsize, &decimaldigits, &nullable);
if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
ast_log(LOG_WARNING, "SQL Describe Column error!\n[%s]\n\n", sql);
ast_category_destroy(cat);
continue;
}
indicator = 0;
res = SQLGetData(stmt, x + 1, SQL_CHAR, rowdata, sizeof(rowdata), &indicator);
if (indicator == SQL_NULL_DATA)
continue;
if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
ast_log(LOG_WARNING, "SQL Get Data error!\n[%s]\n\n", sql);
ast_category_destroy(cat);
continue;
}
stringp = rowdata;
while(stringp) {
chunk = strsep(&stringp, ";");
if (!ast_strlen_zero(ast_strip(chunk))) {
if (initfield && !strcmp(initfield, coltitle))
ast_category_rename(cat, chunk);
var = ast_variable_new(coltitle, chunk);
ast_variable_append(cat, var);
}
}
}
ast_category_append(cfg, cat);
}
SQLFreeHandle(SQL_HANDLE_STMT, stmt);
ast_odbc_release_obj(obj);
return cfg;
}
static int update_odbc(const char *database, const char *table, const char *keyfield, const char *lookup, va_list ap)
{
struct odbc_obj *obj;
SQLHSTMT stmt;
char sql[256];
SQLLEN rowcount=0;
const char *newparam, *newval;
int res;
va_list aq;
struct custom_prepare_struct cps = { .sql = sql, .extra = lookup };
va_copy(cps.ap, ap);
va_copy(aq, ap);
if (!table)
return -1;
obj = ast_odbc_request_obj(database, 0);
if (!obj)
return -1;
newparam = va_arg(aq, const char *);
if (!newparam) {
ast_odbc_release_obj(obj);
return -1;
}
newval = va_arg(aq, const char *);
snprintf(sql, sizeof(sql), "UPDATE %s SET %s=?", table, newparam);
while((newparam = va_arg(aq, const char *))) {
snprintf(sql + strlen(sql), sizeof(sql) - strlen(sql), ", %s=?", newparam);
newval = va_arg(aq, const char *);
}
va_end(aq);
snprintf(sql + strlen(sql), sizeof(sql) - strlen(sql), " WHERE %s=?", keyfield);
stmt = ast_odbc_prepare_and_execute(obj, custom_prepare, &cps);
if (!stmt) {
ast_odbc_release_obj(obj);
return -1;
}
res = SQLRowCount(stmt, &rowcount);
SQLFreeHandle (SQL_HANDLE_STMT, stmt);
ast_odbc_release_obj(obj);
if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
ast_log(LOG_WARNING, "SQL Row Count error!\n[%s]\n\n", sql);
return -1;
}
if (rowcount >= 0)
return (int)rowcount;
return -1;
}
struct config_odbc_obj {
char *sql;
unsigned long cat_metric;
char category[128];
char var_name[128];
char var_val[1024]; /* changed from 128 to 1024 via bug 8251 */
SQLLEN err;
};
static SQLHSTMT config_odbc_prepare(struct odbc_obj *obj, void *data)
{
struct config_odbc_obj *q = data;
SQLHSTMT sth;
int res;
res = SQLAllocHandle(SQL_HANDLE_STMT, obj->con, &sth);
if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
if (option_verbose > 3)
ast_verbose( VERBOSE_PREFIX_4 "Failure in AllocStatement %d\n", res);
return NULL;
}
res = SQLPrepare(sth, (unsigned char *)q->sql, SQL_NTS);
if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
if (option_verbose > 3)
ast_verbose( VERBOSE_PREFIX_4 "Error in PREPARE %d\n", res);
SQLFreeHandle(SQL_HANDLE_STMT, sth);
return NULL;
}
SQLBindCol(sth, 1, SQL_C_ULONG, &q->cat_metric, sizeof(q->cat_metric), &q->err);
SQLBindCol(sth, 2, SQL_C_CHAR, q->category, sizeof(q->category), &q->err);
SQLBindCol(sth, 3, SQL_C_CHAR, q->var_name, sizeof(q->var_name), &q->err);
SQLBindCol(sth, 4, SQL_C_CHAR, q->var_val, sizeof(q->var_val), &q->err);
return sth;
}
static struct ast_config *config_odbc(const char *database, const char *table, const char *file, struct ast_config *cfg, int withcomments)
{
struct ast_variable *new_v;
struct ast_category *cur_cat;
int res = 0;
struct odbc_obj *obj;
char sqlbuf[1024] = "";
char *sql = sqlbuf;
size_t sqlleft = sizeof(sqlbuf);
unsigned int last_cat_metric = 0;
SQLSMALLINT rowcount = 0;
SQLHSTMT stmt;
char last[128] = "";
struct config_odbc_obj q;
memset(&q, 0, sizeof(q));
if (!file || !strcmp (file, "res_config_odbc.conf"))
return NULL; /* cant configure myself with myself ! */
obj = ast_odbc_request_obj(database, 0);
if (!obj)
return NULL;
ast_build_string(&sql, &sqlleft, "SELECT cat_metric, category, var_name, var_val FROM %s ", table);
ast_build_string(&sql, &sqlleft, "WHERE filename='%s' AND commented=0 ", file);
ast_build_string(&sql, &sqlleft, "ORDER BY cat_metric DESC, var_metric ASC, category, var_name ");
q.sql = sqlbuf;
stmt = ast_odbc_prepare_and_execute(obj, config_odbc_prepare, &q);
if (!stmt) {
ast_log(LOG_WARNING, "SQL select error!\n[%s]\n\n", sql);
ast_odbc_release_obj(obj);
return NULL;
}
res = SQLNumResultCols(stmt, &rowcount);
if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
ast_log(LOG_WARNING, "SQL NumResultCols error!\n[%s]\n\n", sql);
SQLFreeHandle(SQL_HANDLE_STMT, stmt);
ast_odbc_release_obj(obj);
return NULL;
}
if (!rowcount) {
ast_log(LOG_NOTICE, "found nothing\n");
ast_odbc_release_obj(obj);
return cfg;
}
cur_cat = ast_config_get_current_category(cfg);
while ((res = SQLFetch(stmt)) != SQL_NO_DATA) {
if (!strcmp (q.var_name, "#include")) {
if (!ast_config_internal_load(q.var_val, cfg, 0)) {
SQLFreeHandle(SQL_HANDLE_STMT, stmt);
ast_odbc_release_obj(obj);
return NULL;
}
continue;
}
if (strcmp(last, q.category) || last_cat_metric != q.cat_metric) {
cur_cat = ast_category_new(q.category);
if (!cur_cat) {
ast_log(LOG_WARNING, "Out of memory!\n");
break;
}
strcpy(last, q.category);
last_cat_metric = q.cat_metric;
ast_category_append(cfg, cur_cat);
}
new_v = ast_variable_new(q.var_name, q.var_val);
ast_variable_append(cur_cat, new_v);
}
SQLFreeHandle(SQL_HANDLE_STMT, stmt);
ast_odbc_release_obj(obj);
return cfg;
}
static struct ast_config_engine odbc_engine = {
.name = "odbc",
.load_func = config_odbc,
.realtime_func = realtime_odbc,
.realtime_multi_func = realtime_multi_odbc,
.update_func = update_odbc
};
static int unload_module (void)
{
ast_module_user_hangup_all();
ast_config_engine_deregister(&odbc_engine);
if (option_verbose)
ast_verbose("res_config_odbc unloaded.\n");
return 0;
}
static int load_module (void)
{
ast_config_engine_register(&odbc_engine);
if (option_verbose)
ast_verbose("res_config_odbc loaded.\n");
return 0;
}
AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_GLOBAL_SYMBOLS, "ODBC Configuration",
.load = load_module,
.unload = unload_module,
);
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