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179 lines
3.7 KiB
179 lines
3.7 KiB
/*
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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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* 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 Environment related dialplan functions
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*
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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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/channel.h"
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#include "asterisk/pbx.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 char *env_read(struct ast_channel *chan, char *cmd, char *data, char *buf, size_t len)
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{
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char *ret = "";
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if (data) {
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ret = getenv(data);
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if (!ret)
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ret = "";
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}
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ast_copy_string(buf, ret, len);
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return buf;
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}
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static void env_write(struct ast_channel *chan, char *cmd, char *data, const char *value)
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{
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if (!ast_strlen_zero(data)) {
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if (!ast_strlen_zero(value)) {
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setenv(data, value, 1);
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} else {
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unsetenv(data);
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}
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}
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}
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static char *stat_read(struct ast_channel *chan, char *cmd, char *data, char *buf, size_t len)
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{
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char *action;
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struct stat s;
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ast_copy_string(buf, "0", len);
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if (!data) {
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ast_log(LOG_ERROR, "Out of memory\n");
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return buf;
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}
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action = strsep(&data, "|");
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if (stat(data, &s)) {
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return buf;
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} else {
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switch (*action) {
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case 'e':
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ast_copy_string(buf, "1", len);
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break;
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case 's':
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snprintf(buf, len, "%d", (unsigned int)s.st_size);
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break;
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case 'f':
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snprintf(buf, len, "%d", S_ISREG(s.st_mode) ? 1 : 0);
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break;
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case 'd':
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snprintf(buf, len, "%d", S_ISDIR(s.st_mode) ? 1 : 0);
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break;
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case 'M':
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snprintf(buf, len, "%d", (int)s.st_mtime);
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break;
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case 'A':
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snprintf(buf, len, "%d", (int)s.st_mtime);
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break;
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case 'C':
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snprintf(buf, len, "%d", (int)s.st_ctime);
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break;
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case 'm':
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snprintf(buf, len, "%o", (int)s.st_mode);
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break;
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}
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}
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return buf;
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}
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static struct ast_custom_function env_function = {
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.name = "ENV",
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.synopsis = "Gets or sets the environment variable specified",
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.syntax = "ENV(<envname>)",
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.read = env_read,
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.write = env_write,
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};
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static struct ast_custom_function stat_function = {
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.name = "STAT",
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.synopsis = "Does a check on the specified file",
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.syntax = "STAT(<flag>,<filename>)",
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.read = stat_read,
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.desc =
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"flag may be one of the following:\n"
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" d - Checks if the file is a directory\n"
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" e - Checks if the file exists\n"
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" f - Checks if the file is a regular file\n"
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" m - Returns the file mode (in octal)\n"
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" s - Returns the size (in bytes) of the file\n"
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" A - Returns the epoch at which the file was last accessed\n"
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" C - Returns the epoch at which the inode was last changed\n"
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" M - Returns the epoch at which the file was last modified\n",
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};
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static char *tdesc = "Environment/filesystem dialplan functions";
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int unload_module(void)
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{
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int res = 0;
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res |= ast_custom_function_unregister(&env_function);
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res |= ast_custom_function_unregister(&stat_function);
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return res;
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}
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int load_module(void)
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{
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int res = 0;
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res |= ast_custom_function_register(&env_function);
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res |= ast_custom_function_register(&stat_function);
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return res;
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}
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char *description(void)
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{
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return tdesc;
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}
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int usecount(void)
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{
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return 0;
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}
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char *key()
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{
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return ASTERISK_GPL_KEY;
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}
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/*
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Local Variables:
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mode: C
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c-file-style: "linux"
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indent-tabs-mode: nil
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End:
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*/
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