Unless i am very mistaken, function_realtime_read() was broken in that it would always return an empty string (because ast_build_string() advanced the pointer to the end of the string, and there was no reference to the initial value. This commit should fix this problem. git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@48551 65c4cc65-6c06-0410-ace0-fbb531ad65f3
167 lines
4.4 KiB
C
167 lines
4.4 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2005-2006, BJ Weschke. All rights reserved.
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*
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* BJ Weschke <bweschke@btwtech.com>
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*
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* This code is released by the author with no restrictions on usage.
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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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*/
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/*! \file
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*
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* \brief REALTIME dialplan function
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*
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* \author BJ Weschke <bweschke@btwtech.com>
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*
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* \ingroup functions
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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 <sys/types.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/options.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/logger.h"
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#include "asterisk/utils.h"
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#include "asterisk/app.h"
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static int function_realtime_read(struct ast_channel *chan, char *cmd, char *data, char *buf, size_t len)
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{
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struct ast_variable *var, *head;
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struct ast_module_user *u;
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struct ast_str *out;
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size_t resultslen;
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int n;
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AST_DECLARE_APP_ARGS(args,
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AST_APP_ARG(family);
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AST_APP_ARG(fieldmatch);
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AST_APP_ARG(value);
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AST_APP_ARG(delim1);
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AST_APP_ARG(delim2);
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);
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if (ast_strlen_zero(data)) {
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ast_log(LOG_WARNING, "Syntax: REALTIME(family|fieldmatch[|value[|delim1[|delim2]]]) - missing argument!\n");
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return -1;
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}
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u = ast_module_user_add(chan);
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AST_STANDARD_APP_ARGS(args, data);
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if (!args.delim1)
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args.delim1 = "|";
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if (!args.delim2)
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args.delim2 = "=";
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head = ast_load_realtime(args.family, args.fieldmatch, args.value, NULL);
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if (!head) {
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ast_module_user_remove(u);
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return -1;
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}
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resultslen = 0;
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n = 0;
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for (var = head; var; n++, var = var->next)
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resultslen += strlen(var->name) + strlen(var->value);
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/* add space for delimiters and final '\0' */
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resultslen += n * (strlen(args.delim1) + strlen(args.delim2)) + 1;
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out = ast_str_alloca(resultslen);
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for (var = head; var; var = var->next)
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ast_str_append(&out, 0, "%s%s%s%s", var->name, args.delim2, var->value, args.delim1);
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ast_copy_string(buf, out->str, len);
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ast_module_user_remove(u);
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return 0;
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}
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static int function_realtime_write(struct ast_channel *chan, char *cmd, char *data, const char *value)
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{
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struct ast_module_user *u;
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int res = 0;
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AST_DECLARE_APP_ARGS(args,
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AST_APP_ARG(family);
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AST_APP_ARG(fieldmatch);
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AST_APP_ARG(value);
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AST_APP_ARG(field);
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);
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if (ast_strlen_zero(data)) {
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ast_log(LOG_WARNING, "Syntax: REALTIME(family|fieldmatch|value|newcol) - missing argument!\n");
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return -1;
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}
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u = ast_module_user_add(chan);
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AST_STANDARD_APP_ARGS(args, data);
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res = ast_update_realtime(args.family, args.fieldmatch, args.value, args.field, (char *)value, NULL);
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if (res < 0) {
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ast_log(LOG_WARNING, "Failed to update. Check the debug log for possible data repository related entries.\n");
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}
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ast_module_user_remove(u);
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return 0;
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}
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struct ast_custom_function realtime_function = {
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.name = "REALTIME",
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.synopsis = "RealTime Read/Write Functions",
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.syntax = "REALTIME(family|fieldmatch[|value[|delim1[|delim2]]]) on read\n"
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"REALTIME(family|fieldmatch|value|field) on write\n",
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.desc = "This function will read or write values from/to a RealTime repository.\n"
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"REALTIME(....) will read names/values from the repository, and \n"
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"REALTIME(....)= will write a new value/field to the repository. On a\n"
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"read, this function returns a delimited text string. The name/value \n"
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"pairs are delimited by delim1, and the name and value are delimited \n"
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"between each other with delim2. The default for delim1 is '=' and \n"
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"the default for delim2 is '|'. If there is no match, NULL will be \n"
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"returned by the function. On a write, this function will always \n"
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"return NULL. \n",
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.read = function_realtime_read,
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.write = function_realtime_write,
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};
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static int unload_module(void)
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{
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int res = ast_custom_function_unregister(&realtime_function);
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ast_module_user_hangup_all();
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return res;
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}
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static int load_module(void)
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{
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int res = ast_custom_function_register(&realtime_function);
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return res;
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}
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AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Read/Write values from a RealTime repository");
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