e6b2e9a750
This patch adds 'const' tags to a number of Asterisk APIs where they are appropriate (where the API already demanded that the function argument not be modified, but the compiler was not informed of that fact). The list includes: - CLI command handlers - CLI command handler arguments - AGI command handlers - AGI command handler arguments - Dialplan application handler arguments - Speech engine API function arguments In addition, various file-scope and function-scope constant arrays got 'const' and/or 'static' qualifiers where they were missing. Review: https://reviewboard.asterisk.org/r/251/ git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@196072 65c4cc65-6c06-0410-ace0-fbb531ad65f3
129 lines
3.3 KiB
C
129 lines
3.3 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 1999 - 2005, Digium, Inc.
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*
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* Matt O'Gorman <mogorman@digium.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 ReadFile application -- Reads in a File for you.
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*
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* \author Matt O'Gorman <mogorman@digium.com>
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*
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* \ingroup applications
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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/file.h"
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#include "asterisk/channel.h"
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#include "asterisk/pbx.h"
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#include "asterisk/app.h"
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#include "asterisk/module.h"
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/*** DOCUMENTATION
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<application name="ReadFile" language="en_US">
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<synopsis>
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Read the contents of a text file into a channel variable.
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</synopsis>
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<syntax argsep="=">
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<parameter name="varname" required="true">
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<para>Result stored here.</para>
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</parameter>
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<parameter name="fileparams" required="true">
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<argument name="file" required="true">
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<para>The name of the file to read.</para>
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</argument>
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<argument name="length" required="false">
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<para>Maximum number of characters to capture.</para>
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<para>If not specified defaults to max.</para>
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</argument>
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</parameter>
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</syntax>
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<description>
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<para>Read the contents of a text file into channel variable <replaceable>varname</replaceable></para>
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<warning><para>ReadFile has been deprecated in favor of Set(varname=${FILE(file,0,length)})</para></warning>
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</description>
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<see-also>
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<ref type="application">System</ref>
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<ref type="application">Read</ref>
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</see-also>
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</application>
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***/
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static char *app_readfile = "ReadFile";
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static int readfile_exec(struct ast_channel *chan, const char *data)
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{
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int res=0;
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char *s, *varname=NULL, *file=NULL, *length=NULL, *returnvar=NULL;
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int len=0;
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static int deprecation_warning = 0;
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if (ast_strlen_zero(data)) {
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ast_log(LOG_WARNING, "ReadFile require an argument!\n");
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return -1;
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}
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s = ast_strdupa(data);
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varname = strsep(&s, "=");
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file = strsep(&s, ",");
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length = s;
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if (deprecation_warning++ % 10 == 0)
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ast_log(LOG_WARNING, "ReadFile has been deprecated in favor of Set(%s=${FILE(%s,0,%s)})\n", varname, file, length);
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if (!varname || !file) {
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ast_log(LOG_ERROR, "No file or variable specified!\n");
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return -1;
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}
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if (length) {
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if ((sscanf(length, "%d", &len) != 1) || (len < 0)) {
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ast_log(LOG_WARNING, "%s is not a positive number, defaulting length to max\n", length);
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len = 0;
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}
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}
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if ((returnvar = ast_read_textfile(file))) {
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if (len > 0) {
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if (len < strlen(returnvar))
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returnvar[len]='\0';
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else
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ast_log(LOG_WARNING, "%s is longer than %d, and %d \n", file, len, (int)strlen(returnvar));
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}
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pbx_builtin_setvar_helper(chan, varname, returnvar);
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ast_free(returnvar);
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}
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return res;
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}
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static int unload_module(void)
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{
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return ast_unregister_application(app_readfile);
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}
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static int load_module(void)
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{
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return ast_register_application_xml(app_readfile, readfile_exec);
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}
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AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Stores output of file into a variable");
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