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00027 #include "asterisk.h"
00028
00029 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 211539 $")
00030
00031 #include "asterisk/module.h"
00032 #include "asterisk/channel.h"
00033 #include "asterisk/pbx.h"
00034 #include "asterisk/utils.h"
00035 #include "asterisk/app.h"
00036
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00055 static int acf_rand_exec(struct ast_channel *chan, const char *cmd,
00056 char *parse, char *buffer, size_t buflen)
00057 {
00058 int min_int, response_int, max_int;
00059 AST_DECLARE_APP_ARGS(args,
00060 AST_APP_ARG(min);
00061 AST_APP_ARG(max);
00062 );
00063
00064 AST_STANDARD_APP_ARGS(args, parse);
00065
00066 if (ast_strlen_zero(args.min) || sscanf(args.min, "%30d", &min_int) != 1)
00067 min_int = 0;
00068
00069 if (ast_strlen_zero(args.max) || sscanf(args.max, "%30d", &max_int) != 1)
00070 max_int = RAND_MAX;
00071
00072 if (max_int < min_int) {
00073 int tmp = max_int;
00074
00075 max_int = min_int;
00076 min_int = tmp;
00077 ast_debug(1, "max<min\n");
00078 }
00079
00080 response_int = min_int + (ast_random() % (max_int - min_int + 1));
00081 ast_debug(1, "%d was the lucky number in range [%d,%d]\n", response_int, min_int, max_int);
00082 snprintf(buffer, buflen, "%d", response_int);
00083
00084 return 0;
00085 }
00086
00087 static struct ast_custom_function acf_rand = {
00088 .name = "RAND",
00089 .read = acf_rand_exec,
00090 .read_max = 12,
00091 };
00092
00093 static int unload_module(void)
00094 {
00095 ast_custom_function_unregister(&acf_rand);
00096
00097 return 0;
00098 }
00099
00100 static int load_module(void)
00101 {
00102 return ast_custom_function_register(&acf_rand);
00103 }
00104
00105 AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Random number dialplan function");