1 files changed, 117 insertions, 0 deletions
diff --git a/trunk/apps/app_waitforring.c b/trunk/apps/app_waitforring.c
new file mode 100644
index 000000000..b4248fee9
--- /dev/null
+++ b/trunk/apps/app_waitforring.c
@@ -0,0 +1,117 @@
+/*
+ * Asterisk -- An open source telephony toolkit.
+ *
+ * Copyright (C) 1999 - 2005, Digium, Inc.
+ *
+ * Mark Spencer <markster@digium.com>
+ *
+ * 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 Wait for Ring Application
+ *
+ * \author Mark Spencer <markster@digium.com>
+ * 
+ * \ingroup applications
+ */
+
+#include "asterisk.h"
+
+ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
+
+#include "asterisk/file.h"
+#include "asterisk/channel.h"
+#include "asterisk/pbx.h"
+#include "asterisk/module.h"
+#include "asterisk/lock.h"
+
+static char *synopsis = "Wait for Ring Application";
+
+static char *desc = "  WaitForRing(timeout):\n"
+"Returns 0 after waiting at least timeout seconds. and\n"
+"only after the next ring has completed.  Returns 0 on\n"
+"success or -1 on hangup\n";
+
+static char *app = "WaitForRing";
+
+
+static int waitforring_exec(struct ast_channel *chan, void *data)
+{
+	struct ast_frame *f;
+	int res = 0;
+	double s;
+	int ms;
+
+	if (!data || (sscanf(data, "%lg", &s) != 1)) {
+                ast_log(LOG_WARNING, "WaitForRing requires an argument (minimum seconds)\n");
+		return 0;
+	}
+
+	ms = s*1000.0;
+	while(ms > 0) {
+		ms = ast_waitfor(chan, ms);
+		if (ms < 0) {
+			res = ms;
+			break;
+		}
+		if (ms > 0) {
+			f = ast_read(chan);
+			if (!f) {
+				res = -1;
+				break;
+			}
+			if ((f->frametype == AST_FRAME_CONTROL) && (f->subclass == AST_CONTROL_RING)) {
+				ast_verb(3, "Got a ring but still waiting for timeout\n");
+			}
+			ast_frfree(f);
+		}
+	}
+	/* Now we're really ready for the ring */
+	if (!res) {
+		ms = 99999999;
+		while(ms > 0) {
+			ms = ast_waitfor(chan, ms);
+			if (ms < 0) {
+				res = ms;
+				break;
+			}
+			if (ms > 0) {
+				f = ast_read(chan);
+				if (!f) {
+					res = -1;
+					break;
+				}
+				if ((f->frametype == AST_FRAME_CONTROL) && (f->subclass == AST_CONTROL_RING)) {
+					ast_verb(3, "Got a ring after the timeout\n");
+					ast_frfree(f);
+					break;
+				}
+				ast_frfree(f);
+			}
+		}
+	}
+
+	return res;
+}
+
+static int unload_module(void)
+{
+	return ast_unregister_application(app);
+}
+
+static int load_module(void)
+{
+	return ast_register_application(app, waitforring_exec, synopsis, desc);
+}
+
+AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Waits until first ring after time");