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00028 #include "asterisk.h"
00029
00030 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 94052 $")
00031
00032 #include "asterisk/logger.h"
00033 #include "asterisk/channel.h"
00034 #include "asterisk/pbx.h"
00035 #include "asterisk/module.h"
00036
00037 static char *app = "WaitUntil";
00038 static char *synopsis = "Wait (sleep) until the current time is the given epoch";
00039 static char *descrip =
00040 " WaitUntil(<epoch>): Waits until the given time. Sets WAITUNTILSTATUS to\n"
00041 "one of the following values:\n"
00042 " OK Wait succeeded\n"
00043 " FAILURE Invalid argument\n"
00044 " HANGUP Channel hung up before time elapsed\n"
00045 " PAST The time specified was already past\n";
00046
00047 static int waituntil_exec(struct ast_channel *chan, void *data)
00048 {
00049 int res;
00050 double fraction;
00051 struct timeval future = { 0, };
00052 struct timeval tv = ast_tvnow();
00053 int msec;
00054
00055 if (ast_strlen_zero(data)) {
00056 ast_log(LOG_WARNING, "WaitUntil requires an argument(epoch)\n");
00057 pbx_builtin_setvar_helper(chan, "WAITUNTILSTATUS", "FAILURE");
00058 return 0;
00059 }
00060
00061 if (sscanf(data, "%ld%lf", (long *)&future.tv_sec, &fraction) == 0) {
00062 ast_log(LOG_WARNING, "WaitUntil called with non-numeric argument\n");
00063 pbx_builtin_setvar_helper(chan, "WAITUNTILSTATUS", "FAILURE");
00064 return 0;
00065 }
00066
00067 future.tv_usec = fraction * 1000000;
00068
00069 if ((msec = ast_tvdiff_ms(future, tv)) < 0) {
00070 ast_log(LOG_NOTICE, "WaitUntil called in the past (now %ld, arg %ld)\n", (long)tv.tv_sec, (long)future.tv_sec);
00071 pbx_builtin_setvar_helper(chan, "WAITUNTILSTATUS", "PAST");
00072 return 0;
00073 }
00074
00075 if ((res = ast_safe_sleep(chan, msec)))
00076 pbx_builtin_setvar_helper(chan, "WAITUNTILSTATUS", "HANGUP");
00077 else
00078 pbx_builtin_setvar_helper(chan, "WAITUNTILSTATUS", "OK");
00079
00080 return res;
00081 }
00082
00083 static int unload_module(void)
00084 {
00085 return ast_unregister_application(app);
00086 }
00087
00088 static int load_module(void)
00089 {
00090 return ast_register_application(app, waituntil_exec, synopsis, descrip);
00091 }
00092
00093 AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Wait until specified time");