1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
|
/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 2006, Digium, Inc.
* Copyright (C) 2006, Claude Patry
*
* 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 Generate Random Number
*
* \author Claude Patry <cpatry@gmail.com>
* \author Tilghman Lesher ( http://asterisk.drunkcoder.com/ )
*/
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <sys/types.h>
#include "asterisk.h"
ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
#include "asterisk/module.h"
#include "asterisk/channel.h"
#include "asterisk/pbx.h"
#include "asterisk/logger.h"
#include "asterisk/utils.h"
#include "asterisk/app.h"
STANDARD_LOCAL_USER;
LOCAL_USER_DECL;
static char *acf_rand_exec(struct ast_channel *chan, char *cmd, char *data, char *buffer, size_t buflen)
{
struct localuser *u;
int min_int, response_int, max_int;
char *parse;
AST_DECLARE_APP_ARGS(args,
AST_APP_ARG(min);
AST_APP_ARG(max);
);
if (!(parse = ast_strdupa(data))) {
*buffer = '\0';
return buffer;
}
LOCAL_USER_ACF_ADD(u);
AST_STANDARD_APP_ARGS(args, parse);
if (ast_strlen_zero(args.min) || sscanf(args.min, "%d", &min_int) != 1) {
min_int = 0;
}
if (ast_strlen_zero(args.max) || sscanf(args.max, "%d", &max_int) != 1) {
max_int = RAND_MAX;
}
if (max_int < min_int) {
int tmp = max_int;
max_int = min_int;
min_int = tmp;
ast_log(LOG_DEBUG, "max<min\n");
}
response_int = min_int + (ast_random() % (max_int - min_int + 1));
ast_log(LOG_DEBUG, "%d was the lucky number in range [%d,%d]\n", response_int, min_int, max_int);
snprintf(buffer, buflen, "%d", response_int);
LOCAL_USER_REMOVE(u);
return buffer;
}
static struct ast_custom_function acf_rand = {
.name = "RAND",
.synopsis = "Choose a random number in a range",
.syntax = "RAND([min][,max])",
.desc =
"Choose a random number between min and max. Min defaults to 0, if not\n"
"specified, while max defaults to RAND_MAX (2147483647 on many systems).\n"
" Example: Set(junky=${RAND(1,8)}); \n"
" Sets junky to a random number between 1 and 8, inclusive.\n",
.read = acf_rand_exec,
};
static char *tdesc = "Random number dialplan function";
int unload_module(void)
{
ast_custom_function_unregister(&acf_rand);
return 0;
}
int load_module(void)
{
return ast_custom_function_register(&acf_rand);
}
char *description(void)
{
return tdesc;
}
int usecount(void)
{
return 0;
}
char *key()
{
return ASTERISK_GPL_KEY;
}
|
