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
174 lines
4.3 KiB
C
174 lines
4.3 KiB
C
/*
|
|
* Asterisk -- An open source telephony toolkit.
|
|
*
|
|
* Copyright (C) 1999 - 2005, Digium, Inc.
|
|
*
|
|
* Mark Spencer <markster@digium.com>
|
|
*
|
|
* See http://www.asterisk.org for more information about
|
|
* the Asterisk project. Please do not directly contact
|
|
* any of the maintainers of this project for assistance;
|
|
* the project provides a web site, mailing lists and IRC
|
|
* channels for your use.
|
|
*
|
|
* This program is free software, distributed under the terms of
|
|
* the GNU General Public License Version 2. See the LICENSE file
|
|
* at the top of the source tree.
|
|
*/
|
|
|
|
/*! \file
|
|
*
|
|
* \brief Execute arbitrary system commands
|
|
*
|
|
* \author Mark Spencer <markster@digium.com>
|
|
*
|
|
* \ingroup applications
|
|
*/
|
|
|
|
#include "asterisk.h"
|
|
|
|
ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
|
|
|
|
#include "asterisk/pbx.h"
|
|
#include "asterisk/module.h"
|
|
#include "asterisk/app.h"
|
|
#include "asterisk/channel.h" /* autoservice */
|
|
#include "asterisk/strings.h"
|
|
#include "asterisk/threadstorage.h"
|
|
|
|
/*** DOCUMENTATION
|
|
<application name="System" language="en_US">
|
|
<synopsis>
|
|
Execute a system command.
|
|
</synopsis>
|
|
<syntax>
|
|
<parameter name="command" required="true">
|
|
<para>Command to execute</para>
|
|
</parameter>
|
|
</syntax>
|
|
<description>
|
|
<para>Executes a command by using system(). If the command
|
|
fails, the console should report a fallthrough.</para>
|
|
<para>Result of execution is returned in the <variable>SYSTEMSTATUS</variable> channel variable:</para>
|
|
<variablelist>
|
|
<variable name="SYSTEMSTATUS">
|
|
<value name="FAILURE">
|
|
Could not execute the specified command.
|
|
</value>
|
|
<value name="SUCCESS">
|
|
Specified command successfully executed.
|
|
</value>
|
|
</variable>
|
|
</variablelist>
|
|
</description>
|
|
</application>
|
|
<application name="TrySystem" language="en_US">
|
|
<synopsis>
|
|
Try executing a system command.
|
|
</synopsis>
|
|
<syntax>
|
|
<parameter name="command" required="true">
|
|
<para>Command to execute</para>
|
|
</parameter>
|
|
</syntax>
|
|
<description>
|
|
<para>Executes a command by using system().</para>
|
|
<para>Result of execution is returned in the <variable>SYSTEMSTATUS</variable> channel variable:</para>
|
|
<variablelist>
|
|
<variable name="SYSTEMSTATUS">
|
|
<value name="FAILURE">
|
|
Could not execute the specified command.
|
|
</value>
|
|
<value name="SUCCESS">
|
|
Specified command successfully executed.
|
|
</value>
|
|
<value name="APPERROR">
|
|
Specified command successfully executed, but returned error code.
|
|
</value>
|
|
</variable>
|
|
</variablelist>
|
|
</description>
|
|
</application>
|
|
|
|
***/
|
|
|
|
AST_THREADSTORAGE(buf_buf);
|
|
|
|
static char *app = "System";
|
|
|
|
static char *app2 = "TrySystem";
|
|
|
|
static char *chanvar = "SYSTEMSTATUS";
|
|
|
|
static int system_exec_helper(struct ast_channel *chan, const char *data, int failmode)
|
|
{
|
|
int res = 0;
|
|
struct ast_str *buf = ast_str_thread_get(&buf_buf, 16);
|
|
|
|
if (ast_strlen_zero(data)) {
|
|
ast_log(LOG_WARNING, "System requires an argument(command)\n");
|
|
pbx_builtin_setvar_helper(chan, chanvar, "FAILURE");
|
|
return failmode;
|
|
}
|
|
|
|
ast_autoservice_start(chan);
|
|
|
|
/* Do our thing here */
|
|
ast_str_get_encoded_str(&buf, 0, (char *) data);
|
|
res = ast_safe_system(ast_str_buffer(buf));
|
|
|
|
if ((res < 0) && (errno != ECHILD)) {
|
|
ast_log(LOG_WARNING, "Unable to execute '%s'\n", (char *)data);
|
|
pbx_builtin_setvar_helper(chan, chanvar, "FAILURE");
|
|
res = failmode;
|
|
} else if (res == 127) {
|
|
ast_log(LOG_WARNING, "Unable to execute '%s'\n", (char *)data);
|
|
pbx_builtin_setvar_helper(chan, chanvar, "FAILURE");
|
|
res = failmode;
|
|
} else {
|
|
if (res < 0)
|
|
res = 0;
|
|
if (res != 0)
|
|
pbx_builtin_setvar_helper(chan, chanvar, "APPERROR");
|
|
else
|
|
pbx_builtin_setvar_helper(chan, chanvar, "SUCCESS");
|
|
res = 0;
|
|
}
|
|
|
|
ast_autoservice_stop(chan);
|
|
|
|
return res;
|
|
}
|
|
|
|
static int system_exec(struct ast_channel *chan, const char *data)
|
|
{
|
|
return system_exec_helper(chan, data, -1);
|
|
}
|
|
|
|
static int trysystem_exec(struct ast_channel *chan, const char *data)
|
|
{
|
|
return system_exec_helper(chan, data, 0);
|
|
}
|
|
|
|
static int unload_module(void)
|
|
{
|
|
int res;
|
|
|
|
res = ast_unregister_application(app);
|
|
res |= ast_unregister_application(app2);
|
|
|
|
return res;
|
|
}
|
|
|
|
static int load_module(void)
|
|
{
|
|
int res;
|
|
|
|
res = ast_register_application_xml(app2, trysystem_exec);
|
|
res |= ast_register_application_xml(app, system_exec);
|
|
|
|
return res;
|
|
}
|
|
|
|
AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Generic System() application");
|