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00028 #include "asterisk.h"
00029
00030 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 137055 $")
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 long seconds;
00052 struct timeval future = { 0, };
00053 struct timeval now = ast_tvnow();
00054 int msec;
00055
00056 if (ast_strlen_zero(data)) {
00057 ast_log(LOG_WARNING, "WaitUntil requires an argument(epoch)\n");
00058 pbx_builtin_setvar_helper(chan, "WAITUNTILSTATUS", "FAILURE");
00059 return 0;
00060 }
00061
00062 if (sscanf(data, "%ld%lf", &seconds, &fraction) == 0) {
00063 ast_log(LOG_WARNING, "WaitUntil called with non-numeric argument\n");
00064 pbx_builtin_setvar_helper(chan, "WAITUNTILSTATUS", "FAILURE");
00065 return 0;
00066 }
00067
00068 future.tv_sec = seconds;
00069 future.tv_usec = fraction * 1000000;
00070
00071 if ((msec = ast_tvdiff_ms(future, now)) < 0) {
00072 ast_log(LOG_NOTICE, "WaitUntil called in the past (now %ld, arg %ld)\n", (long)now.tv_sec, (long)future.tv_sec);
00073 pbx_builtin_setvar_helper(chan, "WAITUNTILSTATUS", "PAST");
00074 return 0;
00075 }
00076
00077 if ((res = ast_safe_sleep(chan, msec)))
00078 pbx_builtin_setvar_helper(chan, "WAITUNTILSTATUS", "HANGUP");
00079 else
00080 pbx_builtin_setvar_helper(chan, "WAITUNTILSTATUS", "OK");
00081
00082 return res;
00083 }
00084
00085 static int unload_module(void)
00086 {
00087 return ast_unregister_application(app);
00088 }
00089
00090 static int load_module(void)
00091 {
00092 return ast_register_application(app, waituntil_exec, synopsis, descrip);
00093 }
00094
00095 AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Wait until specified time");