git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@216846 65c4cc65-6c06-0410-ace0-fbb531ad65f3
1495 lines
42 KiB
C
1495 lines
42 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (c) 2005, 2006 Tilghman Lesher
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* Copyright (c) 2008, 2009 Digium, Inc.
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*
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* Tilghman Lesher <func_odbc__200508@the-tilghman.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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/*!
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* \file
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*
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* \brief ODBC lookups
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*
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* \author Tilghman Lesher <func_odbc__200508@the-tilghman.com>
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*
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* \ingroup functions
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*/
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/*** MODULEINFO
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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 "asterisk/module.h"
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#include "asterisk/file.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/res_odbc.h"
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#include "asterisk/app.h"
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#include "asterisk/cli.h"
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#include "asterisk/strings.h"
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/*** DOCUMENTATION
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<function name="ODBC_FETCH" language="en_US">
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<synopsis>
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Fetch a row from a multirow query.
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</synopsis>
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<syntax>
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<parameter name="result-id" required="true" />
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</syntax>
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<description>
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<para>For queries which are marked as mode=multirow, the original
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query returns a <replaceable>result-id</replaceable> from which results
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may be fetched. This function implements the actual fetch of the results.</para>
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<para>This also sets <variable>ODBC_FETCH_STATUS</variable>.</para>
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<variablelist>
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<variable name="ODBC_FETCH_STATUS">
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<value name="SUCESS">
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If rows are available.
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</value>
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<value name="FAILURE">
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If no rows are available.
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</value>
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</variable>
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</variablelist>
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</description>
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</function>
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<application name="ODBCFinish" language="en_US">
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<synopsis>
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Clear the resultset of a sucessful multirow query.
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</synopsis>
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<syntax>
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<parameter name="result-id" required="true" />
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</syntax>
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<description>
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<para>For queries which are marked as mode=multirow, this will clear
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any remaining rows of the specified resultset.</para>
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</description>
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</application>
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<function name="SQL_ESC" language="en_US">
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<synopsis>
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Escapes single ticks for use in SQL statements.
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</synopsis>
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<syntax>
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<parameter name="string" required="true" />
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</syntax>
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<description>
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<para>Used in SQL templates to escape data which may contain single ticks
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<literal>'</literal> which are otherwise used to delimit data.</para>
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<para>Example: SELECT foo FROM bar WHERE baz='${SQL_ESC(${ARG1})}'</para>
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</description>
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</function>
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***/
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static char *config = "func_odbc.conf";
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enum odbc_option_flags {
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OPT_ESCAPECOMMAS = (1 << 0),
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OPT_MULTIROW = (1 << 1),
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};
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struct acf_odbc_query {
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AST_RWLIST_ENTRY(acf_odbc_query) list;
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char readhandle[5][30];
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char writehandle[5][30];
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char sql_read[2048];
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char sql_write[2048];
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char sql_insert[2048];
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unsigned int flags;
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int rowlimit;
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struct ast_custom_function *acf;
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};
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static void odbc_datastore_free(void *data);
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static struct ast_datastore_info odbc_info = {
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.type = "FUNC_ODBC",
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.destroy = odbc_datastore_free,
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};
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/* For storing each result row */
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struct odbc_datastore_row {
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AST_LIST_ENTRY(odbc_datastore_row) list;
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char data[0];
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};
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/* For storing each result set */
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struct odbc_datastore {
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AST_LIST_HEAD(, odbc_datastore_row);
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char names[0];
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};
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static AST_RWLIST_HEAD_STATIC(queries, acf_odbc_query);
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static int resultcount = 0;
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AST_THREADSTORAGE(sql_buf);
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AST_THREADSTORAGE(sql2_buf);
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AST_THREADSTORAGE(coldata_buf);
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AST_THREADSTORAGE(colnames_buf);
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static int acf_fetch(struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t len);
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static void odbc_datastore_free(void *data)
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{
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struct odbc_datastore *result = data;
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struct odbc_datastore_row *row;
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AST_LIST_LOCK(result);
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while ((row = AST_LIST_REMOVE_HEAD(result, list))) {
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ast_free(row);
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}
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AST_LIST_UNLOCK(result);
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AST_LIST_HEAD_DESTROY(result);
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ast_free(result);
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}
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static SQLHSTMT generic_execute(struct odbc_obj *obj, void *data)
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{
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int res;
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char *sql = data;
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SQLHSTMT stmt;
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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 (%d)!\n", res);
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return NULL;
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}
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res = SQLExecDirect(stmt, (unsigned char *)sql, SQL_NTS);
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if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
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if (res == SQL_ERROR) {
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int i;
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SQLINTEGER nativeerror=0, numfields=0;
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SQLSMALLINT diagbytes=0;
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unsigned char state[10], diagnostic[256];
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SQLGetDiagField(SQL_HANDLE_STMT, stmt, 1, SQL_DIAG_NUMBER, &numfields, SQL_IS_INTEGER, &diagbytes);
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for (i = 0; i < numfields; i++) {
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SQLGetDiagRec(SQL_HANDLE_STMT, stmt, i + 1, state, &nativeerror, diagnostic, sizeof(diagnostic), &diagbytes);
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ast_log(LOG_WARNING, "SQL Execute returned an error %d: %s: %s (%d)\n", res, state, diagnostic, diagbytes);
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if (i > 10) {
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ast_log(LOG_WARNING, "Oh, that was good. There are really %d diagnostics?\n", (int)numfields);
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break;
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}
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}
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}
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ast_log(LOG_WARNING, "SQL Exec Direct failed (%d)![%s]\n", res, sql);
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SQLCloseCursor(stmt);
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SQLFreeHandle(SQL_HANDLE_STMT, stmt);
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return NULL;
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}
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return stmt;
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}
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/*
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* Master control routine
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*/
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static int acf_odbc_write(struct ast_channel *chan, const char *cmd, char *s, const char *value)
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{
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struct odbc_obj *obj = NULL;
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struct acf_odbc_query *query;
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char *t, varname[15];
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int i, dsn, bogus_chan = 0;
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int transactional = 0;
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AST_DECLARE_APP_ARGS(values,
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AST_APP_ARG(field)[100];
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);
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AST_DECLARE_APP_ARGS(args,
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AST_APP_ARG(field)[100];
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);
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SQLHSTMT stmt = NULL;
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SQLLEN rows=0;
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struct ast_str *buf = ast_str_thread_get(&sql_buf, 16);
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struct ast_str *insertbuf = ast_str_thread_get(&sql2_buf, 16);
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const char *status = "FAILURE";
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if (!buf) {
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return -1;
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}
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AST_RWLIST_RDLOCK(&queries);
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AST_RWLIST_TRAVERSE(&queries, query, list) {
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if (!strcmp(query->acf->name, cmd)) {
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break;
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}
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}
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if (!query) {
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ast_log(LOG_ERROR, "No such function '%s'\n", cmd);
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AST_RWLIST_UNLOCK(&queries);
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if (chan) {
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pbx_builtin_setvar_helper(chan, "ODBCSTATUS", status);
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}
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return -1;
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}
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if (!chan) {
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if (!(chan = ast_dummy_channel_alloc())) {
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AST_RWLIST_UNLOCK(&queries);
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return -1;
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}
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bogus_chan = 1;
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}
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if (!bogus_chan) {
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ast_autoservice_start(chan);
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}
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ast_str_make_space(&buf, strlen(query->sql_write) * 2 + 300);
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ast_str_make_space(&insertbuf, strlen(query->sql_insert) * 2 + 300);
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/* Parse our arguments */
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t = value ? ast_strdupa(value) : "";
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if (!s || !t) {
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ast_log(LOG_ERROR, "Out of memory\n");
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AST_RWLIST_UNLOCK(&queries);
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if (!bogus_chan) {
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ast_autoservice_stop(chan);
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pbx_builtin_setvar_helper(chan, "ODBCSTATUS", status);
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} else {
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ast_channel_release(chan);
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}
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return -1;
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}
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AST_STANDARD_APP_ARGS(args, s);
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for (i = 0; i < args.argc; i++) {
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snprintf(varname, sizeof(varname), "ARG%d", i + 1);
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pbx_builtin_pushvar_helper(chan, varname, args.field[i]);
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}
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/* Parse values, just like arguments */
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AST_STANDARD_APP_ARGS(values, t);
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for (i = 0; i < values.argc; i++) {
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snprintf(varname, sizeof(varname), "VAL%d", i + 1);
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pbx_builtin_pushvar_helper(chan, varname, values.field[i]);
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}
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/* Additionally set the value as a whole (but push an empty string if value is NULL) */
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pbx_builtin_pushvar_helper(chan, "VALUE", value ? value : "");
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ast_str_substitute_variables(&buf, 0, chan, query->sql_write);
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ast_str_substitute_variables(&insertbuf, 0, chan, query->sql_insert);
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if (bogus_chan) {
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chan = ast_channel_release(chan);
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} else {
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/* Restore prior values */
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for (i = 0; i < args.argc; i++) {
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snprintf(varname, sizeof(varname), "ARG%d", i + 1);
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pbx_builtin_setvar_helper(chan, varname, NULL);
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}
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for (i = 0; i < values.argc; i++) {
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snprintf(varname, sizeof(varname), "VAL%d", i + 1);
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pbx_builtin_setvar_helper(chan, varname, NULL);
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}
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pbx_builtin_setvar_helper(chan, "VALUE", NULL);
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/*!\note
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* Okay, this part is confusing. Transactions belong to a single database
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* handle. Therefore, when working with transactions, we CANNOT failover
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* to multiple DSNs. We MUST have a single handle all the way through the
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* transaction, or else we CANNOT enforce atomicity.
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*/
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for (dsn = 0; dsn < 5; dsn++) {
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if (transactional) {
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/* This can only happen second time through or greater. */
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ast_log(LOG_WARNING, "Transactions do not work well with multiple DSNs for 'writehandle'\n");
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}
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if (!ast_strlen_zero(query->writehandle[dsn])) {
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if ((obj = ast_odbc_retrieve_transaction_obj(chan, query->writehandle[dsn]))) {
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transactional = 1;
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} else {
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obj = ast_odbc_request_obj(query->writehandle[dsn], 0);
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transactional = 0;
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}
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if (obj && (stmt = ast_odbc_direct_execute(obj, generic_execute, ast_str_buffer(buf)))) {
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break;
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}
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}
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if (obj && !transactional) {
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ast_odbc_release_obj(obj);
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}
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}
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}
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if (stmt && rows == 0 && ast_str_strlen(insertbuf) != 0) {
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SQLCloseCursor(stmt);
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SQLFreeHandle(SQL_HANDLE_STMT, stmt);
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for (dsn = 0; dsn < 5; dsn++) {
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if (!ast_strlen_zero(query->writehandle[dsn])) {
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obj = ast_odbc_request_obj(query->writehandle[dsn], 0);
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if (obj) {
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stmt = ast_odbc_direct_execute(obj, generic_execute, ast_str_buffer(insertbuf));
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}
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}
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if (stmt) {
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status = "FAILOVER";
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SQLRowCount(stmt, &rows);
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break;
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}
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}
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} else if (stmt) {
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status = "SUCCESS";
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SQLRowCount(stmt, &rows);
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}
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AST_RWLIST_UNLOCK(&queries);
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/* Output the affected rows, for all cases. In the event of failure, we
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* flag this as -1 rows. Note that this is different from 0 affected rows
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* which would be the case if we succeeded in our query, but the values did
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* not change. */
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if (!bogus_chan) {
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snprintf(varname, sizeof(varname), "%d", (int)rows);
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pbx_builtin_setvar_helper(chan, "ODBCROWS", varname);
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pbx_builtin_setvar_helper(chan, "ODBCSTATUS", status);
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}
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if (stmt) {
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SQLCloseCursor(stmt);
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SQLFreeHandle(SQL_HANDLE_STMT, stmt);
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}
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if (obj && !transactional) {
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ast_odbc_release_obj(obj);
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obj = NULL;
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}
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if (!bogus_chan) {
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ast_autoservice_stop(chan);
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}
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return 0;
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}
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static int acf_odbc_read(struct ast_channel *chan, const char *cmd, char *s, char *buf, size_t len)
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{
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struct odbc_obj *obj = NULL;
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struct acf_odbc_query *query;
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char varname[15], rowcount[12] = "-1";
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struct ast_str *colnames = ast_str_thread_get(&colnames_buf, 16);
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int res, x, y, buflen = 0, escapecommas, rowlimit = 1, multirow = 0, dsn, bogus_chan = 0;
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AST_DECLARE_APP_ARGS(args,
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AST_APP_ARG(field)[100];
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);
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SQLHSTMT stmt = NULL;
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SQLSMALLINT colcount=0;
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SQLLEN indicator;
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SQLSMALLINT collength;
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struct odbc_datastore *resultset = NULL;
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struct odbc_datastore_row *row = NULL;
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struct ast_str *sql = ast_str_thread_get(&sql_buf, 16);
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const char *status = "FAILURE";
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if (!sql) {
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if (chan) {
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pbx_builtin_setvar_helper(chan, "ODBCSTATUS", status);
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}
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return -1;
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}
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ast_str_reset(colnames);
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AST_RWLIST_RDLOCK(&queries);
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AST_RWLIST_TRAVERSE(&queries, query, list) {
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if (!strcmp(query->acf->name, cmd)) {
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break;
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}
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}
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if (!query) {
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ast_log(LOG_ERROR, "No such function '%s'\n", cmd);
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AST_RWLIST_UNLOCK(&queries);
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if (chan) {
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pbx_builtin_setvar_helper(chan, "ODBCROWS", rowcount);
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pbx_builtin_setvar_helper(chan, "ODBCSTATUS", status);
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}
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return -1;
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}
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|
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if (!chan) {
|
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if (!(chan = ast_dummy_channel_alloc())) {
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AST_RWLIST_UNLOCK(&queries);
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return -1;
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}
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bogus_chan = 1;
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}
|
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|
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if (!bogus_chan) {
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ast_autoservice_start(chan);
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}
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AST_STANDARD_APP_ARGS(args, s);
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for (x = 0; x < args.argc; x++) {
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snprintf(varname, sizeof(varname), "ARG%d", x + 1);
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pbx_builtin_pushvar_helper(chan, varname, args.field[x]);
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}
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ast_str_substitute_variables(&sql, 0, chan, query->sql_read);
|
|
|
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if (bogus_chan) {
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chan = ast_channel_release(chan);
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} else {
|
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/* Restore prior values */
|
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for (x = 0; x < args.argc; x++) {
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snprintf(varname, sizeof(varname), "ARG%d", x + 1);
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pbx_builtin_setvar_helper(chan, varname, NULL);
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}
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|
}
|
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|
|
/* Save these flags, so we can release the lock */
|
|
escapecommas = ast_test_flag(query, OPT_ESCAPECOMMAS);
|
|
if (!bogus_chan && ast_test_flag(query, OPT_MULTIROW)) {
|
|
if (!(resultset = ast_calloc(1, sizeof(*resultset)))) {
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pbx_builtin_setvar_helper(chan, "ODBCROWS", rowcount);
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pbx_builtin_setvar_helper(chan, "ODBCSTATUS", status);
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ast_autoservice_stop(chan);
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return -1;
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}
|
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AST_LIST_HEAD_INIT(resultset);
|
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if (query->rowlimit) {
|
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rowlimit = query->rowlimit;
|
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} else {
|
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rowlimit = INT_MAX;
|
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}
|
|
multirow = 1;
|
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} else if (!bogus_chan) {
|
|
if (query->rowlimit > 1) {
|
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rowlimit = query->rowlimit;
|
|
if (!(resultset = ast_calloc(1, sizeof(*resultset)))) {
|
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pbx_builtin_setvar_helper(chan, "ODBCROWS", rowcount);
|
|
pbx_builtin_setvar_helper(chan, "ODBCSTATUS", status);
|
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ast_autoservice_stop(chan);
|
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return -1;
|
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}
|
|
AST_LIST_HEAD_INIT(resultset);
|
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}
|
|
}
|
|
AST_RWLIST_UNLOCK(&queries);
|
|
|
|
for (dsn = 0; dsn < 5; dsn++) {
|
|
if (!ast_strlen_zero(query->readhandle[dsn])) {
|
|
obj = ast_odbc_request_obj(query->readhandle[dsn], 0);
|
|
if (obj) {
|
|
stmt = ast_odbc_direct_execute(obj, generic_execute, ast_str_buffer(sql));
|
|
}
|
|
}
|
|
if (stmt) {
|
|
break;
|
|
}
|
|
ast_odbc_release_obj(obj);
|
|
obj = NULL;
|
|
}
|
|
|
|
if (!stmt) {
|
|
ast_log(LOG_ERROR, "Unable to execute query [%s]\n", ast_str_buffer(sql));
|
|
if (obj) {
|
|
ast_odbc_release_obj(obj);
|
|
obj = NULL;
|
|
}
|
|
if (!bogus_chan) {
|
|
pbx_builtin_setvar_helper(chan, "ODBCROWS", rowcount);
|
|
ast_autoservice_stop(chan);
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
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", ast_str_buffer(sql));
|
|
SQLCloseCursor(stmt);
|
|
SQLFreeHandle (SQL_HANDLE_STMT, stmt);
|
|
ast_odbc_release_obj(obj);
|
|
obj = NULL;
|
|
if (!bogus_chan) {
|
|
pbx_builtin_setvar_helper(chan, "ODBCROWS", rowcount);
|
|
ast_autoservice_stop(chan);
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
res = SQLFetch(stmt);
|
|
if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
|
|
int res1 = -1;
|
|
if (res == SQL_NO_DATA) {
|
|
ast_verb(4, "Found no rows [%s]\n", ast_str_buffer(sql));
|
|
res1 = 0;
|
|
buf[0] = '\0';
|
|
ast_copy_string(rowcount, "0", sizeof(rowcount));
|
|
status = "NODATA";
|
|
} else {
|
|
ast_log(LOG_WARNING, "Error %d in FETCH [%s]\n", res, ast_str_buffer(sql));
|
|
status = "FETCHERROR";
|
|
}
|
|
SQLCloseCursor(stmt);
|
|
SQLFreeHandle(SQL_HANDLE_STMT, stmt);
|
|
ast_odbc_release_obj(obj);
|
|
obj = NULL;
|
|
if (!bogus_chan) {
|
|
pbx_builtin_setvar_helper(chan, "ODBCROWS", rowcount);
|
|
pbx_builtin_setvar_helper(chan, "ODBCSTATUS", status);
|
|
ast_autoservice_stop(chan);
|
|
}
|
|
return res1;
|
|
}
|
|
|
|
status = "SUCCESS";
|
|
|
|
for (y = 0; y < rowlimit; y++) {
|
|
buf[0] = '\0';
|
|
for (x = 0; x < colcount; x++) {
|
|
int i;
|
|
struct ast_str *coldata = ast_str_thread_get(&coldata_buf, 16);
|
|
char *ptrcoldata;
|
|
|
|
if (y == 0) {
|
|
char colname[256];
|
|
SQLULEN maxcol;
|
|
|
|
res = SQLDescribeCol(stmt, x + 1, (unsigned char *)colname, sizeof(colname), &collength, NULL, &maxcol, NULL, NULL);
|
|
ast_debug(3, "Got collength of %d and maxcol of %d for column '%s' (offset %d)\n", (int)collength, (int)maxcol, colname, x);
|
|
if (((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) || collength == 0) {
|
|
snprintf(colname, sizeof(colname), "field%d", x);
|
|
}
|
|
|
|
ast_str_make_space(&coldata, maxcol + 1);
|
|
|
|
if (ast_str_strlen(colnames)) {
|
|
ast_str_append(&colnames, 0, ",");
|
|
}
|
|
ast_str_append_escapecommas(&colnames, 0, colname, sizeof(colname));
|
|
|
|
if (resultset) {
|
|
void *tmp = ast_realloc(resultset, sizeof(*resultset) + ast_str_strlen(colnames) + 1);
|
|
if (!tmp) {
|
|
ast_log(LOG_ERROR, "No space for a new resultset?\n");
|
|
ast_free(resultset);
|
|
SQLCloseCursor(stmt);
|
|
SQLFreeHandle(SQL_HANDLE_STMT, stmt);
|
|
ast_odbc_release_obj(obj);
|
|
obj = NULL;
|
|
pbx_builtin_setvar_helper(chan, "ODBCROWS", rowcount);
|
|
pbx_builtin_setvar_helper(chan, "ODBCSTATUS", "MEMERROR");
|
|
ast_autoservice_stop(chan);
|
|
return -1;
|
|
}
|
|
resultset = tmp;
|
|
strcpy((char *)resultset + sizeof(*resultset), ast_str_buffer(colnames));
|
|
}
|
|
}
|
|
|
|
buflen = strlen(buf);
|
|
res = ast_odbc_ast_str_SQLGetData(&coldata, -1, stmt, x + 1, SQL_CHAR, &indicator);
|
|
if (indicator == SQL_NULL_DATA) {
|
|
ast_debug(3, "Got NULL data\n");
|
|
ast_str_reset(coldata);
|
|
res = SQL_SUCCESS;
|
|
}
|
|
|
|
if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
|
|
ast_log(LOG_WARNING, "SQL Get Data error!\n[%s]\n\n", ast_str_buffer(sql));
|
|
y = -1;
|
|
buf[0] = '\0';
|
|
goto end_acf_read;
|
|
}
|
|
|
|
ast_debug(2, "Got coldata of '%s'\n", ast_str_buffer(coldata));
|
|
|
|
if (x) {
|
|
buf[buflen++] = ',';
|
|
}
|
|
|
|
/* Copy data, encoding '\' and ',' for the argument parser */
|
|
ptrcoldata = ast_str_buffer(coldata);
|
|
for (i = 0; i < ast_str_strlen(coldata); i++) {
|
|
if (escapecommas && (ptrcoldata[i] == '\\' || ptrcoldata[i] == ',')) {
|
|
buf[buflen++] = '\\';
|
|
}
|
|
buf[buflen++] = ptrcoldata[i];
|
|
|
|
if (buflen >= len - 2) {
|
|
break;
|
|
}
|
|
|
|
if (ptrcoldata[i] == '\0') {
|
|
break;
|
|
}
|
|
}
|
|
|
|
buf[buflen] = '\0';
|
|
ast_debug(2, "buf is now set to '%s'\n", buf);
|
|
}
|
|
ast_debug(2, "buf is now set to '%s'\n", buf);
|
|
|
|
if (resultset) {
|
|
row = ast_calloc(1, sizeof(*row) + buflen + 1);
|
|
if (!row) {
|
|
ast_log(LOG_ERROR, "Unable to allocate space for more rows in this resultset.\n");
|
|
status = "MEMERROR";
|
|
goto end_acf_read;
|
|
}
|
|
strcpy((char *)row + sizeof(*row), buf);
|
|
AST_LIST_INSERT_TAIL(resultset, row, list);
|
|
|
|
/* Get next row */
|
|
res = SQLFetch(stmt);
|
|
if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
|
|
if (res != SQL_NO_DATA) {
|
|
ast_log(LOG_WARNING, "Error %d in FETCH [%s]\n", res, ast_str_buffer(sql));
|
|
}
|
|
/* Number of rows in the resultset */
|
|
y++;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
end_acf_read:
|
|
if (!bogus_chan) {
|
|
snprintf(rowcount, sizeof(rowcount), "%d", y);
|
|
pbx_builtin_setvar_helper(chan, "ODBCROWS", rowcount);
|
|
pbx_builtin_setvar_helper(chan, "ODBCSTATUS", status);
|
|
pbx_builtin_setvar_helper(chan, "~ODBCFIELDS~", ast_str_buffer(colnames));
|
|
if (resultset) {
|
|
int uid;
|
|
struct ast_datastore *odbc_store;
|
|
if (multirow) {
|
|
uid = ast_atomic_fetchadd_int(&resultcount, +1) + 1;
|
|
snprintf(buf, len, "%d", uid);
|
|
} else {
|
|
/* Name of the query is name of the resultset */
|
|
ast_copy_string(buf, cmd, len);
|
|
|
|
/* If there's one with the same name already, free it */
|
|
ast_channel_lock(chan);
|
|
if ((odbc_store = ast_channel_datastore_find(chan, &odbc_info, buf))) {
|
|
ast_channel_datastore_remove(chan, odbc_store);
|
|
odbc_datastore_free(odbc_store->data);
|
|
ast_free(odbc_store);
|
|
}
|
|
ast_channel_unlock(chan);
|
|
}
|
|
odbc_store = ast_datastore_alloc(&odbc_info, buf);
|
|
if (!odbc_store) {
|
|
ast_log(LOG_ERROR, "Rows retrieved, but unable to store it in the channel. Results fail.\n");
|
|
odbc_datastore_free(resultset);
|
|
SQLCloseCursor(stmt);
|
|
SQLFreeHandle(SQL_HANDLE_STMT, stmt);
|
|
ast_odbc_release_obj(obj);
|
|
obj = NULL;
|
|
pbx_builtin_setvar_helper(chan, "ODBCSTATUS", "MEMERROR");
|
|
ast_autoservice_stop(chan);
|
|
return -1;
|
|
}
|
|
odbc_store->data = resultset;
|
|
ast_channel_datastore_add(chan, odbc_store);
|
|
}
|
|
}
|
|
SQLCloseCursor(stmt);
|
|
SQLFreeHandle(SQL_HANDLE_STMT, stmt);
|
|
ast_odbc_release_obj(obj);
|
|
obj = NULL;
|
|
if (resultset && !multirow) {
|
|
/* Fetch the first resultset */
|
|
if (!acf_fetch(chan, "", buf, buf, len)) {
|
|
buf[0] = '\0';
|
|
}
|
|
}
|
|
if (!bogus_chan) {
|
|
ast_autoservice_stop(chan);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int acf_escape(struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t len)
|
|
{
|
|
char *out = buf;
|
|
|
|
for (; *data && out - buf < len; data++) {
|
|
if (*data == '\'') {
|
|
*out = '\'';
|
|
out++;
|
|
}
|
|
*out++ = *data;
|
|
}
|
|
*out = '\0';
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct ast_custom_function escape_function = {
|
|
.name = "SQL_ESC",
|
|
.read = acf_escape,
|
|
.write = NULL,
|
|
};
|
|
|
|
static int acf_fetch(struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t len)
|
|
{
|
|
struct ast_datastore *store;
|
|
struct odbc_datastore *resultset;
|
|
struct odbc_datastore_row *row;
|
|
store = ast_channel_datastore_find(chan, &odbc_info, data);
|
|
if (!store) {
|
|
pbx_builtin_setvar_helper(chan, "ODBC_FETCH_STATUS", "FAILURE");
|
|
return -1;
|
|
}
|
|
resultset = store->data;
|
|
AST_LIST_LOCK(resultset);
|
|
row = AST_LIST_REMOVE_HEAD(resultset, list);
|
|
AST_LIST_UNLOCK(resultset);
|
|
if (!row) {
|
|
/* Cleanup datastore */
|
|
ast_channel_datastore_remove(chan, store);
|
|
ast_datastore_free(store);
|
|
pbx_builtin_setvar_helper(chan, "ODBC_FETCH_STATUS", "FAILURE");
|
|
return -1;
|
|
}
|
|
pbx_builtin_setvar_helper(chan, "~ODBCFIELDS~", resultset->names);
|
|
ast_copy_string(buf, row->data, len);
|
|
ast_free(row);
|
|
pbx_builtin_setvar_helper(chan, "ODBC_FETCH_STATUS", "SUCCESS");
|
|
return 0;
|
|
}
|
|
|
|
static struct ast_custom_function fetch_function = {
|
|
.name = "ODBC_FETCH",
|
|
.read = acf_fetch,
|
|
.write = NULL,
|
|
};
|
|
|
|
static char *app_odbcfinish = "ODBCFinish";
|
|
|
|
static int exec_odbcfinish(struct ast_channel *chan, const char *data)
|
|
{
|
|
struct ast_datastore *store = ast_channel_datastore_find(chan, &odbc_info, data);
|
|
if (!store) /* Already freed; no big deal. */
|
|
return 0;
|
|
ast_channel_datastore_remove(chan, store);
|
|
ast_datastore_free(store);
|
|
return 0;
|
|
}
|
|
|
|
static int init_acf_query(struct ast_config *cfg, char *catg, struct acf_odbc_query **query)
|
|
{
|
|
const char *tmp;
|
|
int i;
|
|
|
|
if (!cfg || !catg) {
|
|
return EINVAL;
|
|
}
|
|
|
|
*query = ast_calloc(1, sizeof(struct acf_odbc_query));
|
|
if (! (*query))
|
|
return ENOMEM;
|
|
|
|
if (((tmp = ast_variable_retrieve(cfg, catg, "writehandle"))) || ((tmp = ast_variable_retrieve(cfg, catg, "dsn")))) {
|
|
char *tmp2 = ast_strdupa(tmp);
|
|
AST_DECLARE_APP_ARGS(writeconf,
|
|
AST_APP_ARG(dsn)[5];
|
|
);
|
|
AST_STANDARD_APP_ARGS(writeconf, tmp2);
|
|
for (i = 0; i < 5; i++) {
|
|
if (!ast_strlen_zero(writeconf.dsn[i]))
|
|
ast_copy_string((*query)->writehandle[i], writeconf.dsn[i], sizeof((*query)->writehandle[i]));
|
|
}
|
|
}
|
|
|
|
if ((tmp = ast_variable_retrieve(cfg, catg, "readhandle"))) {
|
|
char *tmp2 = ast_strdupa(tmp);
|
|
AST_DECLARE_APP_ARGS(readconf,
|
|
AST_APP_ARG(dsn)[5];
|
|
);
|
|
AST_STANDARD_APP_ARGS(readconf, tmp2);
|
|
for (i = 0; i < 5; i++) {
|
|
if (!ast_strlen_zero(readconf.dsn[i]))
|
|
ast_copy_string((*query)->readhandle[i], readconf.dsn[i], sizeof((*query)->readhandle[i]));
|
|
}
|
|
} else {
|
|
/* If no separate readhandle, then use the writehandle for reading */
|
|
for (i = 0; i < 5; i++) {
|
|
if (!ast_strlen_zero((*query)->writehandle[i]))
|
|
ast_copy_string((*query)->readhandle[i], (*query)->writehandle[i], sizeof((*query)->readhandle[i]));
|
|
}
|
|
}
|
|
|
|
if ((tmp = ast_variable_retrieve(cfg, catg, "readsql")))
|
|
ast_copy_string((*query)->sql_read, tmp, sizeof((*query)->sql_read));
|
|
else if ((tmp = ast_variable_retrieve(cfg, catg, "read"))) {
|
|
ast_log(LOG_WARNING, "Parameter 'read' is deprecated for category %s. Please use 'readsql' instead.\n", catg);
|
|
ast_copy_string((*query)->sql_read, tmp, sizeof((*query)->sql_read));
|
|
}
|
|
|
|
if (!ast_strlen_zero((*query)->sql_read) && ast_strlen_zero((*query)->readhandle[0])) {
|
|
ast_free(*query);
|
|
*query = NULL;
|
|
ast_log(LOG_ERROR, "There is SQL, but no ODBC class to be used for reading: %s\n", catg);
|
|
return EINVAL;
|
|
}
|
|
|
|
if ((tmp = ast_variable_retrieve(cfg, catg, "writesql")))
|
|
ast_copy_string((*query)->sql_write, tmp, sizeof((*query)->sql_write));
|
|
else if ((tmp = ast_variable_retrieve(cfg, catg, "write"))) {
|
|
ast_log(LOG_WARNING, "Parameter 'write' is deprecated for category %s. Please use 'writesql' instead.\n", catg);
|
|
ast_copy_string((*query)->sql_write, tmp, sizeof((*query)->sql_write));
|
|
}
|
|
|
|
if (!ast_strlen_zero((*query)->sql_write) && ast_strlen_zero((*query)->writehandle[0])) {
|
|
ast_free(*query);
|
|
*query = NULL;
|
|
ast_log(LOG_ERROR, "There is SQL, but no ODBC class to be used for writing: %s\n", catg);
|
|
return EINVAL;
|
|
}
|
|
|
|
if ((tmp = ast_variable_retrieve(cfg, catg, "insertsql"))) {
|
|
ast_copy_string((*query)->sql_insert, tmp, sizeof((*query)->sql_insert));
|
|
}
|
|
|
|
/* Allow escaping of embedded commas in fields to be turned off */
|
|
ast_set_flag((*query), OPT_ESCAPECOMMAS);
|
|
if ((tmp = ast_variable_retrieve(cfg, catg, "escapecommas"))) {
|
|
if (ast_false(tmp))
|
|
ast_clear_flag((*query), OPT_ESCAPECOMMAS);
|
|
}
|
|
|
|
if ((tmp = ast_variable_retrieve(cfg, catg, "mode"))) {
|
|
if (strcasecmp(tmp, "multirow") == 0)
|
|
ast_set_flag((*query), OPT_MULTIROW);
|
|
if ((tmp = ast_variable_retrieve(cfg, catg, "rowlimit")))
|
|
sscanf(tmp, "%30d", &((*query)->rowlimit));
|
|
}
|
|
|
|
(*query)->acf = ast_calloc(1, sizeof(struct ast_custom_function));
|
|
if (! (*query)->acf) {
|
|
ast_free(*query);
|
|
*query = NULL;
|
|
return ENOMEM;
|
|
}
|
|
if (ast_string_field_init((*query)->acf, 128)) {
|
|
ast_free((*query)->acf);
|
|
ast_free(*query);
|
|
*query = NULL;
|
|
return ENOMEM;
|
|
}
|
|
|
|
if ((tmp = ast_variable_retrieve(cfg, catg, "prefix")) && !ast_strlen_zero(tmp)) {
|
|
if (asprintf((char **)&((*query)->acf->name), "%s_%s", tmp, catg) < 0) {
|
|
ast_log(LOG_WARNING, "asprintf() failed: %s\n", strerror(errno));
|
|
}
|
|
} else {
|
|
if (asprintf((char **)&((*query)->acf->name), "ODBC_%s", catg) < 0) {
|
|
ast_log(LOG_WARNING, "asprintf() failed: %s\n", strerror(errno));
|
|
}
|
|
}
|
|
|
|
if (!((*query)->acf->name)) {
|
|
ast_string_field_free_memory((*query)->acf);
|
|
ast_free((*query)->acf);
|
|
ast_free(*query);
|
|
*query = NULL;
|
|
return ENOMEM;
|
|
}
|
|
|
|
if ((tmp = ast_variable_retrieve(cfg, catg, "syntax")) && !ast_strlen_zero(tmp)) {
|
|
ast_string_field_build((*query)->acf, syntax, "%s(%s)", (*query)->acf->name, tmp);
|
|
} else {
|
|
ast_string_field_build((*query)->acf, syntax, "%s(<arg1>[...[,<argN>]])", (*query)->acf->name);
|
|
}
|
|
|
|
if (ast_strlen_zero((*query)->acf->syntax)) {
|
|
ast_free((char *)(*query)->acf->name);
|
|
ast_string_field_free_memory((*query)->acf);
|
|
ast_free((*query)->acf);
|
|
ast_free(*query);
|
|
*query = NULL;
|
|
return ENOMEM;
|
|
}
|
|
|
|
if ((tmp = ast_variable_retrieve(cfg, catg, "synopsis")) && !ast_strlen_zero(tmp)) {
|
|
ast_string_field_set((*query)->acf, synopsis, tmp);
|
|
} else {
|
|
ast_string_field_set((*query)->acf, synopsis, "Runs the referenced query with the specified arguments");
|
|
}
|
|
|
|
if (ast_strlen_zero((*query)->acf->synopsis)) {
|
|
ast_free((char *)(*query)->acf->name);
|
|
ast_string_field_free_memory((*query)->acf);
|
|
ast_free((*query)->acf);
|
|
ast_free(*query);
|
|
*query = NULL;
|
|
return ENOMEM;
|
|
}
|
|
|
|
if (!ast_strlen_zero((*query)->sql_read) && !ast_strlen_zero((*query)->sql_write)) {
|
|
ast_string_field_build((*query)->acf, desc,
|
|
"Runs the following query, as defined in func_odbc.conf, performing\n"
|
|
"substitution of the arguments into the query as specified by ${ARG1},\n"
|
|
"${ARG2}, ... ${ARGn}. When setting the function, the values are provided\n"
|
|
"either in whole as ${VALUE} or parsed as ${VAL1}, ${VAL2}, ... ${VALn}.\n"
|
|
"%s"
|
|
"\nRead:\n%s\n\nWrite:\n%s\n%s%s%s",
|
|
ast_strlen_zero((*query)->sql_insert) ? "" :
|
|
"If the write query affects no rows, the insert query will be\n"
|
|
"performed.\n",
|
|
(*query)->sql_read,
|
|
(*query)->sql_write,
|
|
ast_strlen_zero((*query)->sql_insert) ? "" : "Insert:\n",
|
|
ast_strlen_zero((*query)->sql_insert) ? "" : (*query)->sql_insert,
|
|
ast_strlen_zero((*query)->sql_insert) ? "" : "\n");
|
|
} else if (!ast_strlen_zero((*query)->sql_read)) {
|
|
ast_string_field_build((*query)->acf, desc,
|
|
"Runs the following query, as defined in func_odbc.conf, performing\n"
|
|
"substitution of the arguments into the query as specified by ${ARG1},\n"
|
|
"${ARG2}, ... ${ARGn}. This function may only be read, not set.\n\nSQL:\n%s\n",
|
|
(*query)->sql_read);
|
|
} else if (!ast_strlen_zero((*query)->sql_write)) {
|
|
ast_string_field_build((*query)->acf, desc,
|
|
"Runs the following query, as defined in func_odbc.conf, performing\n"
|
|
"substitution of the arguments into the query as specified by ${ARG1},\n"
|
|
"${ARG2}, ... ${ARGn}. The values are provided either in whole as\n"
|
|
"${VALUE} or parsed as ${VAL1}, ${VAL2}, ... ${VALn}.\n"
|
|
"This function may only be set.\n%sSQL:\n%s\n%s%s%s",
|
|
ast_strlen_zero((*query)->sql_insert) ? "" :
|
|
"If the write query affects no rows, the insert query will be\n"
|
|
"performed.\n",
|
|
(*query)->sql_write,
|
|
ast_strlen_zero((*query)->sql_insert) ? "" : "Insert:\n",
|
|
ast_strlen_zero((*query)->sql_insert) ? "" : (*query)->sql_insert,
|
|
ast_strlen_zero((*query)->sql_insert) ? "" : "\n");
|
|
} else {
|
|
ast_string_field_free_memory((*query)->acf);
|
|
ast_free((char *)(*query)->acf->name);
|
|
ast_free((*query)->acf);
|
|
ast_free(*query);
|
|
ast_log(LOG_WARNING, "Section '%s' was found, but there was no SQL to execute. Ignoring.\n", catg);
|
|
return EINVAL;
|
|
}
|
|
|
|
if (ast_strlen_zero((*query)->acf->desc)) {
|
|
ast_string_field_free_memory((*query)->acf);
|
|
ast_free((char *)(*query)->acf->name);
|
|
ast_free((*query)->acf);
|
|
ast_free(*query);
|
|
*query = NULL;
|
|
return ENOMEM;
|
|
}
|
|
|
|
if (ast_strlen_zero((*query)->sql_read)) {
|
|
(*query)->acf->read = NULL;
|
|
} else {
|
|
(*query)->acf->read = acf_odbc_read;
|
|
}
|
|
|
|
if (ast_strlen_zero((*query)->sql_write)) {
|
|
(*query)->acf->write = NULL;
|
|
} else {
|
|
(*query)->acf->write = acf_odbc_write;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int free_acf_query(struct acf_odbc_query *query)
|
|
{
|
|
if (query) {
|
|
if (query->acf) {
|
|
if (query->acf->name)
|
|
ast_free((char *)query->acf->name);
|
|
ast_string_field_free_memory(query->acf);
|
|
ast_free(query->acf);
|
|
}
|
|
ast_free(query);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static char *cli_odbc_read(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
|
|
{
|
|
AST_DECLARE_APP_ARGS(args,
|
|
AST_APP_ARG(field)[100];
|
|
);
|
|
struct ast_str *sql;
|
|
char *char_args, varname[10];
|
|
struct acf_odbc_query *query;
|
|
struct ast_channel *chan;
|
|
int i;
|
|
|
|
switch (cmd) {
|
|
case CLI_INIT:
|
|
e->command = "odbc read";
|
|
e->usage =
|
|
"Usage: odbc read <name> <args> [exec]\n"
|
|
" Evaluates the SQL provided in the ODBC function <name>, and\n"
|
|
" optionally executes the function. This function is intended for\n"
|
|
" testing purposes. Remember to quote arguments containing spaces.\n";
|
|
return NULL;
|
|
case CLI_GENERATE:
|
|
if (a->pos == 2) {
|
|
int wordlen = strlen(a->word), which = 0;
|
|
/* Complete function name */
|
|
AST_RWLIST_RDLOCK(&queries);
|
|
AST_RWLIST_TRAVERSE(&queries, query, list) {
|
|
if (!strncasecmp(query->acf->name, a->word, wordlen)) {
|
|
if (++which > a->n) {
|
|
char *res = ast_strdup(query->acf->name);
|
|
AST_RWLIST_UNLOCK(&queries);
|
|
return res;
|
|
}
|
|
}
|
|
}
|
|
AST_RWLIST_UNLOCK(&queries);
|
|
return NULL;
|
|
} else if (a->pos == 4) {
|
|
return a->n == 0 ? ast_strdup("exec") : NULL;
|
|
} else {
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
if (a->argc < 4 || a->argc > 5) {
|
|
return CLI_SHOWUSAGE;
|
|
}
|
|
|
|
sql = ast_str_thread_get(&sql_buf, 16);
|
|
if (!sql) {
|
|
return CLI_FAILURE;
|
|
}
|
|
|
|
AST_RWLIST_RDLOCK(&queries);
|
|
AST_RWLIST_TRAVERSE(&queries, query, list) {
|
|
if (!strcmp(query->acf->name, a->argv[2])) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!query) {
|
|
ast_cli(a->fd, "No such query '%s'\n", a->argv[2]);
|
|
AST_RWLIST_UNLOCK(&queries);
|
|
return CLI_SHOWUSAGE;
|
|
}
|
|
|
|
if (ast_strlen_zero(query->sql_read)) {
|
|
ast_cli(a->fd, "The function %s has no writesql parameter.\n", a->argv[2]);
|
|
AST_RWLIST_UNLOCK(&queries);
|
|
return CLI_SUCCESS;
|
|
}
|
|
|
|
ast_str_make_space(&sql, strlen(query->sql_read) * 2 + 300);
|
|
|
|
/* Evaluate function */
|
|
char_args = ast_strdupa(a->argv[3]);
|
|
|
|
chan = ast_dummy_channel_alloc();
|
|
|
|
AST_STANDARD_APP_ARGS(args, char_args);
|
|
for (i = 0; i < args.argc; i++) {
|
|
snprintf(varname, sizeof(varname), "ARG%d", i + 1);
|
|
pbx_builtin_pushvar_helper(chan, varname, args.field[i]);
|
|
}
|
|
|
|
ast_str_substitute_variables(&sql, 0, chan, query->sql_read);
|
|
chan = ast_channel_release(chan);
|
|
|
|
if (a->argc == 5 && !strcmp(a->argv[4], "exec")) {
|
|
/* Execute the query */
|
|
struct odbc_obj *obj = NULL;
|
|
int dsn, executed = 0;
|
|
SQLHSTMT stmt;
|
|
int rows = 0, res, x;
|
|
SQLSMALLINT colcount = 0, collength;
|
|
SQLLEN indicator;
|
|
struct ast_str *coldata = ast_str_thread_get(&coldata_buf, 16);
|
|
char colname[256];
|
|
SQLULEN maxcol;
|
|
|
|
for (dsn = 0; dsn < 5; dsn++) {
|
|
if (ast_strlen_zero(query->readhandle[dsn])) {
|
|
continue;
|
|
}
|
|
ast_debug(1, "Found handle %s\n", query->readhandle[dsn]);
|
|
if (!(obj = ast_odbc_request_obj(query->readhandle[dsn], 0))) {
|
|
continue;
|
|
}
|
|
|
|
ast_debug(1, "Got obj\n");
|
|
if (!(stmt = ast_odbc_direct_execute(obj, generic_execute, ast_str_buffer(sql)))) {
|
|
ast_odbc_release_obj(obj);
|
|
obj = NULL;
|
|
continue;
|
|
}
|
|
|
|
executed = 1;
|
|
|
|
res = SQLNumResultCols(stmt, &colcount);
|
|
if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
|
|
ast_cli(a->fd, "SQL Column Count error!\n[%s]\n\n", ast_str_buffer(sql));
|
|
SQLCloseCursor(stmt);
|
|
SQLFreeHandle (SQL_HANDLE_STMT, stmt);
|
|
ast_odbc_release_obj(obj);
|
|
obj = NULL;
|
|
AST_RWLIST_UNLOCK(&queries);
|
|
return CLI_SUCCESS;
|
|
}
|
|
|
|
res = SQLFetch(stmt);
|
|
if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
|
|
SQLCloseCursor(stmt);
|
|
SQLFreeHandle(SQL_HANDLE_STMT, stmt);
|
|
ast_odbc_release_obj(obj);
|
|
obj = NULL;
|
|
if (res == SQL_NO_DATA) {
|
|
ast_cli(a->fd, "Returned %d rows. Query executed on handle %d:%s [%s]\n", rows, dsn, query->readhandle[dsn], ast_str_buffer(sql));
|
|
break;
|
|
} else {
|
|
ast_cli(a->fd, "Error %d in FETCH [%s]\n", res, ast_str_buffer(sql));
|
|
}
|
|
AST_RWLIST_UNLOCK(&queries);
|
|
return CLI_SUCCESS;
|
|
}
|
|
for (;;) {
|
|
for (x = 0; x < colcount; x++) {
|
|
res = SQLDescribeCol(stmt, x + 1, (unsigned char *)colname, sizeof(colname), &collength, NULL, &maxcol, NULL, NULL);
|
|
if (((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) || collength == 0) {
|
|
snprintf(colname, sizeof(colname), "field%d", x);
|
|
}
|
|
|
|
res = ast_odbc_ast_str_SQLGetData(&coldata, maxcol, stmt, x + 1, SQL_CHAR, &indicator);
|
|
if (indicator == SQL_NULL_DATA) {
|
|
ast_str_set(&coldata, 0, "(nil)");
|
|
res = SQL_SUCCESS;
|
|
}
|
|
|
|
if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
|
|
ast_cli(a->fd, "SQL Get Data error %d!\n[%s]\n\n", res, ast_str_buffer(sql));
|
|
SQLCloseCursor(stmt);
|
|
SQLFreeHandle(SQL_HANDLE_STMT, stmt);
|
|
ast_odbc_release_obj(obj);
|
|
obj = NULL;
|
|
AST_RWLIST_UNLOCK(&queries);
|
|
return CLI_SUCCESS;
|
|
}
|
|
|
|
ast_cli(a->fd, "%-20.20s %s\n", colname, ast_str_buffer(coldata));
|
|
}
|
|
rows++;
|
|
|
|
/* Get next row */
|
|
res = SQLFetch(stmt);
|
|
if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
|
|
break;
|
|
}
|
|
ast_cli(a->fd, "%-20.20s %s\n", "----------", "----------");
|
|
}
|
|
SQLCloseCursor(stmt);
|
|
SQLFreeHandle(SQL_HANDLE_STMT, stmt);
|
|
ast_odbc_release_obj(obj);
|
|
obj = NULL;
|
|
ast_cli(a->fd, "Returned %d row%s. Query executed on handle %d [%s]\n", rows, rows == 1 ? "" : "s", dsn, query->readhandle[dsn]);
|
|
break;
|
|
}
|
|
if (obj) {
|
|
ast_odbc_release_obj(obj);
|
|
obj = NULL;
|
|
}
|
|
|
|
if (!executed) {
|
|
ast_cli(a->fd, "Failed to execute query. [%s]\n", ast_str_buffer(sql));
|
|
}
|
|
} else { /* No execution, just print out the resulting SQL */
|
|
ast_cli(a->fd, "%s\n", ast_str_buffer(sql));
|
|
}
|
|
AST_RWLIST_UNLOCK(&queries);
|
|
return CLI_SUCCESS;
|
|
}
|
|
|
|
static char *cli_odbc_write(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
|
|
{
|
|
AST_DECLARE_APP_ARGS(values,
|
|
AST_APP_ARG(field)[100];
|
|
);
|
|
AST_DECLARE_APP_ARGS(args,
|
|
AST_APP_ARG(field)[100];
|
|
);
|
|
struct ast_str *sql;
|
|
char *char_args, *char_values, varname[10];
|
|
struct acf_odbc_query *query;
|
|
struct ast_channel *chan;
|
|
int i;
|
|
|
|
switch (cmd) {
|
|
case CLI_INIT:
|
|
e->command = "odbc write";
|
|
e->usage =
|
|
"Usage: odbc write <name> <args> <value> [exec]\n"
|
|
" Evaluates the SQL provided in the ODBC function <name>, and\n"
|
|
" optionally executes the function. This function is intended for\n"
|
|
" testing purposes. Remember to quote arguments containing spaces.\n";
|
|
return NULL;
|
|
case CLI_GENERATE:
|
|
if (a->pos == 2) {
|
|
int wordlen = strlen(a->word), which = 0;
|
|
/* Complete function name */
|
|
AST_RWLIST_RDLOCK(&queries);
|
|
AST_RWLIST_TRAVERSE(&queries, query, list) {
|
|
if (!strncasecmp(query->acf->name, a->word, wordlen)) {
|
|
if (++which > a->n) {
|
|
char *res = ast_strdup(query->acf->name);
|
|
AST_RWLIST_UNLOCK(&queries);
|
|
return res;
|
|
}
|
|
}
|
|
}
|
|
AST_RWLIST_UNLOCK(&queries);
|
|
return NULL;
|
|
} else if (a->pos == 5) {
|
|
return a->n == 0 ? ast_strdup("exec") : NULL;
|
|
} else {
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
if (a->argc < 5 || a->argc > 6) {
|
|
return CLI_SHOWUSAGE;
|
|
}
|
|
|
|
sql = ast_str_thread_get(&sql_buf, 16);
|
|
if (!sql) {
|
|
return CLI_FAILURE;
|
|
}
|
|
|
|
AST_RWLIST_RDLOCK(&queries);
|
|
AST_RWLIST_TRAVERSE(&queries, query, list) {
|
|
if (!strcmp(query->acf->name, a->argv[2])) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!query) {
|
|
ast_cli(a->fd, "No such query '%s'\n", a->argv[2]);
|
|
AST_RWLIST_UNLOCK(&queries);
|
|
return CLI_SHOWUSAGE;
|
|
}
|
|
|
|
if (ast_strlen_zero(query->sql_write)) {
|
|
ast_cli(a->fd, "The function %s has no writesql parameter.\n", a->argv[2]);
|
|
AST_RWLIST_UNLOCK(&queries);
|
|
return CLI_SUCCESS;
|
|
}
|
|
|
|
ast_str_make_space(&sql, strlen(query->sql_write) * 2 + 300);
|
|
|
|
/* Evaluate function */
|
|
char_args = ast_strdupa(a->argv[3]);
|
|
char_values = ast_strdupa(a->argv[4]);
|
|
|
|
chan = ast_dummy_channel_alloc();
|
|
|
|
AST_STANDARD_APP_ARGS(args, char_args);
|
|
for (i = 0; i < args.argc; i++) {
|
|
snprintf(varname, sizeof(varname), "ARG%d", i + 1);
|
|
pbx_builtin_pushvar_helper(chan, varname, args.field[i]);
|
|
}
|
|
|
|
/* Parse values, just like arguments */
|
|
AST_STANDARD_APP_ARGS(values, char_values);
|
|
for (i = 0; i < values.argc; i++) {
|
|
snprintf(varname, sizeof(varname), "VAL%d", i + 1);
|
|
pbx_builtin_pushvar_helper(chan, varname, values.field[i]);
|
|
}
|
|
|
|
/* Additionally set the value as a whole (but push an empty string if value is NULL) */
|
|
pbx_builtin_pushvar_helper(chan, "VALUE", S_OR(a->argv[4], ""));
|
|
ast_str_substitute_variables(&sql, 0, chan, query->sql_write);
|
|
ast_debug(1, "SQL is %s\n", ast_str_buffer(sql));
|
|
chan = ast_channel_release(chan);
|
|
|
|
if (a->argc == 6 && !strcmp(a->argv[5], "exec")) {
|
|
/* Execute the query */
|
|
struct odbc_obj *obj = NULL;
|
|
int dsn, executed = 0;
|
|
SQLHSTMT stmt;
|
|
SQLLEN rows = -1;
|
|
|
|
for (dsn = 0; dsn < 5; dsn++) {
|
|
if (ast_strlen_zero(query->writehandle[dsn])) {
|
|
continue;
|
|
}
|
|
if (!(obj = ast_odbc_request_obj(query->writehandle[dsn], 0))) {
|
|
continue;
|
|
}
|
|
if (!(stmt = ast_odbc_direct_execute(obj, generic_execute, ast_str_buffer(sql)))) {
|
|
ast_odbc_release_obj(obj);
|
|
obj = NULL;
|
|
continue;
|
|
}
|
|
|
|
SQLRowCount(stmt, &rows);
|
|
SQLCloseCursor(stmt);
|
|
SQLFreeHandle(SQL_HANDLE_STMT, stmt);
|
|
ast_odbc_release_obj(obj);
|
|
obj = NULL;
|
|
ast_cli(a->fd, "Affected %d rows. Query executed on handle %d [%s]\n", (int)rows, dsn, query->writehandle[dsn]);
|
|
executed = 1;
|
|
break;
|
|
}
|
|
|
|
if (!executed) {
|
|
ast_cli(a->fd, "Failed to execute query.\n");
|
|
}
|
|
} else { /* No execution, just print out the resulting SQL */
|
|
ast_cli(a->fd, "%s\n", ast_str_buffer(sql));
|
|
}
|
|
AST_RWLIST_UNLOCK(&queries);
|
|
return CLI_SUCCESS;
|
|
}
|
|
|
|
static struct ast_cli_entry cli_func_odbc[] = {
|
|
AST_CLI_DEFINE(cli_odbc_write, "Test setting a func_odbc function"),
|
|
AST_CLI_DEFINE(cli_odbc_read, "Test reading a func_odbc function"),
|
|
};
|
|
|
|
static int load_module(void)
|
|
{
|
|
int res = 0;
|
|
struct ast_config *cfg;
|
|
char *catg;
|
|
struct ast_flags config_flags = { 0 };
|
|
|
|
res |= ast_custom_function_register(&fetch_function);
|
|
res |= ast_register_application_xml(app_odbcfinish, exec_odbcfinish);
|
|
AST_RWLIST_WRLOCK(&queries);
|
|
|
|
cfg = ast_config_load(config, config_flags);
|
|
if (!cfg || cfg == CONFIG_STATUS_FILEINVALID) {
|
|
ast_log(LOG_NOTICE, "Unable to load config for func_odbc: %s\n", config);
|
|
AST_RWLIST_UNLOCK(&queries);
|
|
return AST_MODULE_LOAD_DECLINE;
|
|
}
|
|
|
|
for (catg = ast_category_browse(cfg, NULL);
|
|
catg;
|
|
catg = ast_category_browse(cfg, catg)) {
|
|
struct acf_odbc_query *query = NULL;
|
|
int err;
|
|
|
|
if ((err = init_acf_query(cfg, catg, &query))) {
|
|
if (err == ENOMEM)
|
|
ast_log(LOG_ERROR, "Out of memory\n");
|
|
else if (err == EINVAL)
|
|
ast_log(LOG_ERROR, "Invalid parameters for category %s\n", catg);
|
|
else
|
|
ast_log(LOG_ERROR, "%s (%d)\n", strerror(err), err);
|
|
} else {
|
|
AST_RWLIST_INSERT_HEAD(&queries, query, list);
|
|
ast_custom_function_register(query->acf);
|
|
}
|
|
}
|
|
|
|
ast_config_destroy(cfg);
|
|
res |= ast_custom_function_register(&escape_function);
|
|
ast_cli_register_multiple(cli_func_odbc, ARRAY_LEN(cli_func_odbc));
|
|
|
|
AST_RWLIST_UNLOCK(&queries);
|
|
return res;
|
|
}
|
|
|
|
static int unload_module(void)
|
|
{
|
|
struct acf_odbc_query *query;
|
|
int res = 0;
|
|
|
|
AST_RWLIST_WRLOCK(&queries);
|
|
while (!AST_RWLIST_EMPTY(&queries)) {
|
|
query = AST_RWLIST_REMOVE_HEAD(&queries, list);
|
|
ast_custom_function_unregister(query->acf);
|
|
free_acf_query(query);
|
|
}
|
|
|
|
res |= ast_custom_function_unregister(&escape_function);
|
|
res |= ast_custom_function_unregister(&fetch_function);
|
|
res |= ast_unregister_application(app_odbcfinish);
|
|
ast_cli_unregister_multiple(cli_func_odbc, ARRAY_LEN(cli_func_odbc));
|
|
|
|
/* Allow any threads waiting for this lock to pass (avoids a race) */
|
|
AST_RWLIST_UNLOCK(&queries);
|
|
usleep(1);
|
|
AST_RWLIST_WRLOCK(&queries);
|
|
|
|
AST_RWLIST_UNLOCK(&queries);
|
|
return 0;
|
|
}
|
|
|
|
static int reload(void)
|
|
{
|
|
int res = 0;
|
|
struct ast_config *cfg;
|
|
struct acf_odbc_query *oldquery;
|
|
char *catg;
|
|
struct ast_flags config_flags = { CONFIG_FLAG_FILEUNCHANGED };
|
|
|
|
cfg = ast_config_load(config, config_flags);
|
|
if (cfg == CONFIG_STATUS_FILEUNCHANGED || cfg == CONFIG_STATUS_FILEINVALID)
|
|
return 0;
|
|
|
|
AST_RWLIST_WRLOCK(&queries);
|
|
|
|
while (!AST_RWLIST_EMPTY(&queries)) {
|
|
oldquery = AST_RWLIST_REMOVE_HEAD(&queries, list);
|
|
ast_custom_function_unregister(oldquery->acf);
|
|
free_acf_query(oldquery);
|
|
}
|
|
|
|
if (!cfg) {
|
|
ast_log(LOG_WARNING, "Unable to load config for func_odbc: %s\n", config);
|
|
goto reload_out;
|
|
}
|
|
|
|
for (catg = ast_category_browse(cfg, NULL);
|
|
catg;
|
|
catg = ast_category_browse(cfg, catg)) {
|
|
struct acf_odbc_query *query = NULL;
|
|
|
|
if (init_acf_query(cfg, catg, &query)) {
|
|
ast_log(LOG_ERROR, "Cannot initialize query %s\n", catg);
|
|
} else {
|
|
AST_RWLIST_INSERT_HEAD(&queries, query, list);
|
|
ast_custom_function_register(query->acf);
|
|
}
|
|
}
|
|
|
|
ast_config_destroy(cfg);
|
|
reload_out:
|
|
AST_RWLIST_UNLOCK(&queries);
|
|
return res;
|
|
}
|
|
|
|
/* XXX need to revise usecount - set if query_lock is set */
|
|
|
|
AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_DEFAULT, "ODBC lookups",
|
|
.load = load_module,
|
|
.unload = unload_module,
|
|
.reload = reload,
|
|
);
|
|
|