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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 1999 - 2005, Digium, Inc.
*
* 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 Environment related dialplan functions
*
*/
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "asterisk.h"
/* ASTERISK_FILE_VERSION(__FILE__, "$Revision$") */
#include "asterisk/channel.h"
#include "asterisk/pbx.h"
#include "asterisk/logger.h"
#include "asterisk/utils.h"
#include "asterisk/app.h"
static char *builtin_function_env_read(struct ast_channel *chan, char *cmd, char *data, char *buf, size_t len)
{
char *ret = "";
if (data) {
ret = getenv(data);
if (!ret)
ret = "";
}
ast_copy_string(buf, ret, len);
return buf;
}
static void builtin_function_env_write(struct ast_channel *chan, char *cmd, char *data, const char *value)
{
if (!ast_strlen_zero(data)) {
if (!ast_strlen_zero(value)) {
setenv(data, value, 1);
} else {
unsetenv(data);
}
}
}
static char *builtin_function_stat_read(struct ast_channel *chan, char *cmd, char *data, char *buf, size_t len)
{
char *action;
struct stat s;
ast_copy_string(buf, "0", len);
if (!data) {
ast_log(LOG_ERROR, "Out of memory\n");
return buf;
}
action = strsep(&data, "|");
if (stat(data, &s)) {
return buf;
} else {
switch (*action) {
case 'e':
ast_copy_string(buf, "1", len);
break;
case 's':
snprintf(buf, len, "%d", (unsigned int)s.st_size);
break;
case 'f':
snprintf(buf, len, "%d", S_ISREG(s.st_mode) ? 1 : 0);
break;
case 'd':
snprintf(buf, len, "%d", S_ISDIR(s.st_mode) ? 1 : 0);
break;
case 'M':
snprintf(buf, len, "%d", (int)s.st_mtime);
break;
case 'A':
snprintf(buf, len, "%d", (int)s.st_mtime);
break;
case 'C':
snprintf(buf, len, "%d", (int)s.st_ctime);
break;
case 'm':
snprintf(buf, len, "%o", (int)s.st_mode);
break;
}
}
return buf;
}
#ifndef BUILTIN_FUNC
static
#endif
struct ast_custom_function env_function = {
.name = "ENV",
.synopsis = "Gets or sets the environment variable specified",
.syntax = "ENV(<envname>)",
.read = builtin_function_env_read,
.write = builtin_function_env_write,
};
#ifndef BUILTIN_FUNC
static
#endif
struct ast_custom_function stat_function = {
.name = "STAT",
.synopsis = "Does a check on the specified file",
.syntax = "STAT(<flag>,<filename>)",
.read = builtin_function_stat_read,
.desc =
"flag may be one of the following:\n"
" d - Checks if the file is a directory\n"
" e - Checks if the file exists\n"
" f - Checks if the file is a regular file\n"
" m - Returns the file mode (in octal)\n"
" s - Returns the size (in bytes) of the file\n"
" A - Returns the epoch at which the file was last accessed\n"
" C - Returns the epoch at which the inode was last changed\n"
" M - Returns the epoch at which the file was last modified\n",
};
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