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637 lines
17 KiB
637 lines
17 KiB
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 1999 - 2010, Digium, Inc.
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*
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* Mark Spencer <markster@digium.com>
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*
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* Copyright (C) 2004 - 2005 Anthony Minessale II <anthmct@yahoo.com>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*! \file
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*
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* \brief odbc+odbc plugin for portable configuration engine
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*
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* \author Mark Spencer <markster@digium.com>
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* \author Anthony Minessale II <anthmct@yahoo.com>
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*
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* \arg http://www.unixodbc.org
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*/
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/*** MODULEINFO
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<depend>unixodbc</depend>
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<depend>ltdl</depend>
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<depend>res_odbc</depend>
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***/
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#include "asterisk.h"
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ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include "asterisk/file.h"
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#include "asterisk/logger.h"
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#include "asterisk/channel.h"
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#include "asterisk/pbx.h"
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#include "asterisk/config.h"
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#include "asterisk/module.h"
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#include "asterisk/lock.h"
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#include "asterisk/options.h"
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#include "asterisk/res_odbc.h"
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#include "asterisk/utils.h"
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#include "asterisk/stringfields.h"
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struct custom_prepare_struct {
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const char *sql;
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const char *extra;
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AST_DECLARE_STRING_FIELDS(
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AST_STRING_FIELD(encoding)[256];
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);
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va_list ap;
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};
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static void decode_chunk(char *chunk)
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{
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for (; *chunk; chunk++) {
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if (*chunk == '^' && strchr("0123456789ABCDEF", chunk[1]) && strchr("0123456789ABCDEF", chunk[2])) {
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sscanf(chunk + 1, "%02hhX", chunk);
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memmove(chunk + 1, chunk + 3, strlen(chunk + 3) + 1);
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}
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}
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}
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static SQLHSTMT custom_prepare(struct odbc_obj *obj, void *data)
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{
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int res, x = 1;
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struct custom_prepare_struct *cps = data;
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const char *newparam, *newval;
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char encodebuf[1024];
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SQLHSTMT stmt;
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va_list ap;
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va_copy(ap, cps->ap);
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res = SQLAllocHandle(SQL_HANDLE_STMT, obj->con, &stmt);
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if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
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ast_log(LOG_WARNING, "SQL Alloc Handle failed!\n");
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return NULL;
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}
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res = SQLPrepare(stmt, (unsigned char *)cps->sql, SQL_NTS);
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if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
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ast_log(LOG_WARNING, "SQL Prepare failed![%s]\n", cps->sql);
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SQLFreeHandle (SQL_HANDLE_STMT, stmt);
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return NULL;
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}
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while ((newparam = va_arg(ap, const char *))) {
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newval = va_arg(ap, const char *);
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if (strchr(newval, ';') || strchr(newval, '^')) {
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char *eptr = encodebuf;
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const char *vptr = newval;
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for (; *vptr && eptr < encodebuf + sizeof(encodebuf); vptr++) {
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if (strchr("^;", *vptr)) {
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/* We use ^XX, instead of %XX because '%' is a special character in SQL */
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snprintf(eptr, encodebuf + sizeof(encodebuf) - eptr, "^%02hhX", *vptr);
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eptr += 3;
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} else {
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*eptr++ = *vptr;
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}
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}
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if (eptr < encodebuf + sizeof(encodebuf)) {
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*eptr = '\0';
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} else {
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encodebuf[sizeof(encodebuf) - 1] = '\0';
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}
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ast_string_field_set(cps, encoding[x], encodebuf);
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newval = cps->encoding[x];
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}
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SQLBindParameter(stmt, x++, SQL_PARAM_INPUT, SQL_C_CHAR, SQL_CHAR, strlen(newval), 0, (void *)newval, 0, NULL);
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}
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va_end(ap);
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if (!ast_strlen_zero(cps->extra))
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SQLBindParameter(stmt, x++, SQL_PARAM_INPUT, SQL_C_CHAR, SQL_CHAR, strlen(cps->extra), 0, (void *)cps->extra, 0, NULL);
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return stmt;
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}
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static struct ast_variable *realtime_odbc(const char *database, const char *table, va_list ap)
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{
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struct odbc_obj *obj;
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SQLHSTMT stmt;
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char sql[1024];
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char coltitle[256];
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char rowdata[2048];
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char *op;
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const char *newparam, *newval;
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char *stringp;
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char *chunk;
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SQLSMALLINT collen;
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int res;
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int x;
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struct ast_variable *var=NULL, *prev=NULL;
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SQLULEN colsize;
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SQLSMALLINT colcount=0;
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SQLSMALLINT datatype;
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SQLSMALLINT decimaldigits;
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SQLSMALLINT nullable;
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SQLLEN indicator;
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va_list aq;
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struct custom_prepare_struct cps = { .sql = sql };
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if (ast_string_field_init(&cps, 256)) {
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return NULL;
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}
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va_copy(cps.ap, ap);
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va_copy(aq, ap);
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if (!table) {
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ast_string_field_free_memory(&cps);
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return NULL;
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}
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obj = ast_odbc_request_obj(database, 0);
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if (!obj) {
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ast_log(LOG_ERROR, "No database handle available with the name of '%s' (check res_odbc.conf)\n", database);
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ast_string_field_free_memory(&cps);
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return NULL;
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}
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newparam = va_arg(aq, const char *);
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if (!newparam) {
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ast_odbc_release_obj(obj);
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ast_string_field_free_memory(&cps);
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return NULL;
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}
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newval = va_arg(aq, const char *);
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op = !strchr(newparam, ' ') ? " =" : "";
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snprintf(sql, sizeof(sql), "SELECT * FROM %s WHERE %s%s ?%s", table, newparam, op,
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strcasestr(newparam, "LIKE") && !ast_odbc_backslash_is_escape(obj) ? " ESCAPE '\\'" : "");
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while((newparam = va_arg(aq, const char *))) {
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op = !strchr(newparam, ' ') ? " =" : "";
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snprintf(sql + strlen(sql), sizeof(sql) - strlen(sql), " AND %s%s ?%s", newparam, op,
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strcasestr(newparam, "LIKE") && !ast_odbc_backslash_is_escape(obj) ? " ESCAPE '\\'" : "");
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newval = va_arg(aq, const char *);
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}
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va_end(aq);
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stmt = ast_odbc_prepare_and_execute(obj, custom_prepare, &cps);
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if (!stmt) {
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ast_odbc_release_obj(obj);
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ast_string_field_free_memory(&cps);
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return NULL;
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}
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res = SQLNumResultCols(stmt, &colcount);
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if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
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ast_log(LOG_WARNING, "SQL Column Count error!\n[%s]\n\n", sql);
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SQLFreeHandle (SQL_HANDLE_STMT, stmt);
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ast_odbc_release_obj(obj);
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ast_string_field_free_memory(&cps);
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return NULL;
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}
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res = SQLFetch(stmt);
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if (res == SQL_NO_DATA) {
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SQLFreeHandle (SQL_HANDLE_STMT, stmt);
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ast_odbc_release_obj(obj);
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ast_string_field_free_memory(&cps);
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return NULL;
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}
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if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
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ast_log(LOG_WARNING, "SQL Fetch error!\n[%s]\n\n", sql);
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SQLFreeHandle (SQL_HANDLE_STMT, stmt);
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ast_odbc_release_obj(obj);
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ast_string_field_free_memory(&cps);
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return NULL;
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}
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for (x = 0; x < colcount; x++) {
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rowdata[0] = '\0';
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colsize = 0;
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collen = sizeof(coltitle);
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res = SQLDescribeCol(stmt, x + 1, (unsigned char *)coltitle, sizeof(coltitle), &collen,
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&datatype, &colsize, &decimaldigits, &nullable);
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if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
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ast_log(LOG_WARNING, "SQL Describe Column error!\n[%s]\n\n", sql);
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if (var)
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ast_variables_destroy(var);
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ast_odbc_release_obj(obj);
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ast_string_field_free_memory(&cps);
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return NULL;
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}
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indicator = 0;
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res = SQLGetData(stmt, x + 1, SQL_CHAR, rowdata, sizeof(rowdata), &indicator);
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if (indicator == SQL_NULL_DATA)
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continue;
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if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
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ast_log(LOG_WARNING, "SQL Get Data error!\n[%s]\n\n", sql);
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if (var)
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ast_variables_destroy(var);
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ast_odbc_release_obj(obj);
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return NULL;
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}
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stringp = rowdata;
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while (stringp) {
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chunk = strsep(&stringp, ";");
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if (!ast_strlen_zero(ast_strip(chunk))) {
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if (strchr(chunk, '^')) {
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decode_chunk(chunk);
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}
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if (prev) {
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prev->next = ast_variable_new(coltitle, chunk);
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if (prev->next) {
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prev = prev->next;
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}
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} else {
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prev = var = ast_variable_new(coltitle, chunk);
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}
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}
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}
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}
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SQLFreeHandle(SQL_HANDLE_STMT, stmt);
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ast_odbc_release_obj(obj);
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ast_string_field_free_memory(&cps);
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return var;
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}
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static struct ast_config *realtime_multi_odbc(const char *database, const char *table, va_list ap)
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{
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struct odbc_obj *obj;
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SQLHSTMT stmt;
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char sql[1024];
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char coltitle[256];
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char rowdata[2048];
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const char *initfield=NULL;
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char *op;
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const char *newparam, *newval;
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char *stringp;
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char *chunk;
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SQLSMALLINT collen;
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int res;
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int x;
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struct ast_variable *var=NULL;
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struct ast_config *cfg=NULL;
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struct ast_category *cat=NULL;
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struct ast_realloca ra;
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SQLULEN colsize;
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SQLSMALLINT colcount=0;
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SQLSMALLINT datatype;
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SQLSMALLINT decimaldigits;
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SQLSMALLINT nullable;
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SQLLEN indicator;
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struct custom_prepare_struct cps = { .sql = sql };
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va_list aq;
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if (!table || ast_string_field_init(&cps, 256)) {
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return NULL;
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}
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va_copy(cps.ap, ap);
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va_copy(aq, ap);
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memset(&ra, 0, sizeof(ra));
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obj = ast_odbc_request_obj(database, 0);
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if (!obj) {
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ast_string_field_free_memory(&cps);
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return NULL;
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}
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newparam = va_arg(aq, const char *);
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if (!newparam) {
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ast_odbc_release_obj(obj);
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ast_string_field_free_memory(&cps);
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return NULL;
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}
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initfield = ast_strdupa(newparam);
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if ((op = strchr(initfield, ' ')))
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*op = '\0';
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newval = va_arg(aq, const char *);
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op = !strchr(newparam, ' ') ? " =" : "";
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snprintf(sql, sizeof(sql), "SELECT * FROM %s WHERE %s%s ?%s", table, newparam, op,
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strcasestr(newparam, "LIKE") && !ast_odbc_backslash_is_escape(obj) ? " ESCAPE '\\'" : "");
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while((newparam = va_arg(aq, const char *))) {
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op = !strchr(newparam, ' ') ? " =" : "";
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snprintf(sql + strlen(sql), sizeof(sql) - strlen(sql), " AND %s%s ?%s", newparam, op,
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strcasestr(newparam, "LIKE") && !ast_odbc_backslash_is_escape(obj) ? " ESCAPE '\\'" : "");
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newval = va_arg(aq, const char *);
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}
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if (initfield)
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snprintf(sql + strlen(sql), sizeof(sql) - strlen(sql), " ORDER BY %s", initfield);
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va_end(aq);
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stmt = ast_odbc_prepare_and_execute(obj, custom_prepare, &cps);
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if (!stmt) {
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ast_odbc_release_obj(obj);
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ast_string_field_free_memory(&cps);
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return NULL;
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}
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res = SQLNumResultCols(stmt, &colcount);
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if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
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ast_log(LOG_WARNING, "SQL Column Count error!\n[%s]\n\n", sql);
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SQLFreeHandle(SQL_HANDLE_STMT, stmt);
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ast_odbc_release_obj(obj);
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ast_string_field_free_memory(&cps);
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return NULL;
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}
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cfg = ast_config_new();
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if (!cfg) {
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ast_log(LOG_WARNING, "Out of memory!\n");
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SQLFreeHandle(SQL_HANDLE_STMT, stmt);
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ast_odbc_release_obj(obj);
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ast_string_field_free_memory(&cps);
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return NULL;
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}
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while ((res=SQLFetch(stmt)) != SQL_NO_DATA) {
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var = NULL;
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if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
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ast_log(LOG_WARNING, "SQL Fetch error!\n[%s]\n\n", sql);
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continue;
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}
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cat = ast_category_new("");
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if (!cat) {
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ast_log(LOG_WARNING, "Out of memory!\n");
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continue;
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}
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for (x=0;x<colcount;x++) {
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rowdata[0] = '\0';
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colsize = 0;
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collen = sizeof(coltitle);
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res = SQLDescribeCol(stmt, x + 1, (unsigned char *)coltitle, sizeof(coltitle), &collen,
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&datatype, &colsize, &decimaldigits, &nullable);
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if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
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ast_log(LOG_WARNING, "SQL Describe Column error!\n[%s]\n\n", sql);
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ast_category_destroy(cat);
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continue;
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}
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indicator = 0;
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res = SQLGetData(stmt, x + 1, SQL_CHAR, rowdata, sizeof(rowdata), &indicator);
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if (indicator == SQL_NULL_DATA)
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continue;
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if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
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ast_log(LOG_WARNING, "SQL Get Data error!\n[%s]\n\n", sql);
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ast_category_destroy(cat);
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continue;
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}
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stringp = rowdata;
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while (stringp) {
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chunk = strsep(&stringp, ";");
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if (!ast_strlen_zero(ast_strip(chunk))) {
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if (strchr(chunk, '^')) {
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decode_chunk(chunk);
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}
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if (initfield && !strcmp(initfield, coltitle)) {
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ast_category_rename(cat, chunk);
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}
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var = ast_variable_new(coltitle, chunk);
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ast_variable_append(cat, var);
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}
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}
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}
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ast_category_append(cfg, cat);
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}
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SQLFreeHandle(SQL_HANDLE_STMT, stmt);
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ast_odbc_release_obj(obj);
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ast_string_field_free_memory(&cps);
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return cfg;
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}
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static int update_odbc(const char *database, const char *table, const char *keyfield, const char *lookup, va_list ap)
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{
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struct odbc_obj *obj;
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SQLHSTMT stmt;
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char sql[256];
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SQLLEN rowcount=0;
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const char *newparam, *newval;
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int res;
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va_list aq;
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struct custom_prepare_struct cps = { .sql = sql, .extra = lookup };
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if (!table || ast_string_field_init(&cps, 256)) {
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return -1;
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}
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va_copy(cps.ap, ap);
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va_copy(aq, ap);
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if (!(obj = ast_odbc_request_obj(database, 0))) {
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ast_string_field_free_memory(&cps);
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return -1;
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}
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newparam = va_arg(aq, const char *);
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if (!newparam) {
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ast_odbc_release_obj(obj);
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ast_string_field_free_memory(&cps);
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return -1;
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}
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newval = va_arg(aq, const char *);
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snprintf(sql, sizeof(sql), "UPDATE %s SET %s=?", table, newparam);
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while((newparam = va_arg(aq, const char *))) {
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snprintf(sql + strlen(sql), sizeof(sql) - strlen(sql), ", %s=?", newparam);
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newval = va_arg(aq, const char *);
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}
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va_end(aq);
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snprintf(sql + strlen(sql), sizeof(sql) - strlen(sql), " WHERE %s=?", keyfield);
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stmt = ast_odbc_prepare_and_execute(obj, custom_prepare, &cps);
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if (!stmt) {
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ast_odbc_release_obj(obj);
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ast_string_field_free_memory(&cps);
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return -1;
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}
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res = SQLRowCount(stmt, &rowcount);
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SQLFreeHandle (SQL_HANDLE_STMT, stmt);
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ast_odbc_release_obj(obj);
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ast_string_field_free_memory(&cps);
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if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
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ast_log(LOG_WARNING, "SQL Row Count error!\n[%s]\n\n", sql);
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return -1;
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}
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|
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if (rowcount >= 0) {
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return (int) rowcount;
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}
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return -1;
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}
|
|
|
|
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_DEFAULT, "ODBC Configuration",
|
|
.load = load_module,
|
|
.unload = unload_module,
|
|
);
|