wpa_supplicant: Update to 07-Jul-2012 TOT

commit a5ed45586c63ffd8f9d2b44e27c251d7bacbeaf4
Author: Jouni Malinen <j@w1.fi>
Date:   Sat Jul 7 13:01:45 2012 +0300

    WPS SSDP: Fix socket leaks on error paths

Change-Id: I0864aac7fc88fa2a60f5cca7d524b94363410c85
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>

1 files changed, 143 insertions, 0 deletions

diff --git a/wpa_supplicant/autoscan.c b/wpa_supplicant/autoscan.c
new file mode 100644
index 0000000..d0c040a
--- /dev/null
+++ b/wpa_supplicant/autoscan.c
@@ -0,0 +1,143 @@
+/*
+ * WPA Supplicant - auto scan
+ * Copyright (c) 2012, Intel Corporation. All rights reserved.
+ *
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
+ */
+
+#include "includes.h"
+
+#include "common.h"
+#include "config.h"
+#include "wpa_supplicant_i.h"
+#include "bss.h"
+#include "scan.h"
+#include "autoscan.h"
+
+#ifdef CONFIG_AUTOSCAN_EXPONENTIAL
+extern const struct autoscan_ops autoscan_exponential_ops;
+#endif /* CONFIG_AUTOSCAN_EXPONENTIAL */
+
+#ifdef CONFIG_AUTOSCAN_PERIODIC
+extern const struct autoscan_ops autoscan_periodic_ops;
+#endif /* CONFIG_AUTOSCAN_PERIODIC */
+
+static const struct autoscan_ops * autoscan_modules[] = {
+#ifdef CONFIG_AUTOSCAN_EXPONENTIAL
+	&autoscan_exponential_ops,
+#endif /* CONFIG_AUTOSCAN_EXPONENTIAL */
+#ifdef CONFIG_AUTOSCAN_PERIODIC
+	&autoscan_periodic_ops,
+#endif /* CONFIG_AUTOSCAN_PERIODIC */
+	NULL
+};
+
+
+static void request_scan(struct wpa_supplicant *wpa_s)
+{
+	wpa_s->scan_req = 2;
+
+	if (wpa_supplicant_req_sched_scan(wpa_s))
+		wpa_supplicant_req_scan(wpa_s, wpa_s->scan_interval, 0);
+}
+
+
+int autoscan_init(struct wpa_supplicant *wpa_s, int req_scan)
+{
+	const char *name = wpa_s->conf->autoscan;
+	const char *params;
+	size_t nlen;
+	int i;
+	const struct autoscan_ops *ops = NULL;
+
+	if (wpa_s->autoscan && wpa_s->autoscan_priv)
+		return 0;
+
+	if (name == NULL)
+		return 0;
+
+	params = os_strchr(name, ':');
+	if (params == NULL) {
+		params = "";
+		nlen = os_strlen(name);
+	} else {
+		nlen = params - name;
+		params++;
+	}
+
+	for (i = 0; autoscan_modules[i]; i++) {
+		if (os_strncmp(name, autoscan_modules[i]->name, nlen) == 0) {
+			ops = autoscan_modules[i];
+			break;
+		}
+	}
+
+	if (ops == NULL) {
+		wpa_printf(MSG_ERROR, "autoscan: Could not find module "
+			   "matching the parameter '%s'", name);
+		return -1;
+	}
+
+	wpa_s->autoscan_params = NULL;
+
+	wpa_s->autoscan_priv = ops->init(wpa_s, params);
+	if (wpa_s->autoscan_priv == NULL)
+		return -1;
+	wpa_s->autoscan = ops;
+
+	wpa_printf(MSG_DEBUG, "autoscan: Initialized module '%s' with "
+		   "parameters '%s'", ops->name, params);
+	if (!req_scan)
+		return 0;
+
+	/*
+	 * Cancelling existing scan requests, if any.
+	 */
+	wpa_supplicant_cancel_sched_scan(wpa_s);
+	wpa_supplicant_cancel_scan(wpa_s);
+
+	/*
+	 * Firing first scan, which will lead to call autoscan_notify_scan.
+	 */
+	request_scan(wpa_s);
+
+	return 0;
+}
+
+
+void autoscan_deinit(struct wpa_supplicant *wpa_s)
+{
+	if (wpa_s->autoscan && wpa_s->autoscan_priv) {
+		wpa_printf(MSG_DEBUG, "autoscan: Deinitializing module '%s'",
+			   wpa_s->autoscan->name);
+		wpa_s->autoscan->deinit(wpa_s->autoscan_priv);
+		wpa_s->autoscan = NULL;
+		wpa_s->autoscan_priv = NULL;
+
+		wpa_s->scan_interval = 5;
+		wpa_s->sched_scan_interval = 0;
+	}
+}
+
+
+int autoscan_notify_scan(struct wpa_supplicant *wpa_s,
+			 struct wpa_scan_results *scan_res)
+{
+	int interval;
+
+	if (wpa_s->autoscan && wpa_s->autoscan_priv) {
+		interval = wpa_s->autoscan->notify_scan(wpa_s->autoscan_priv,
+							scan_res);
+
+		if (interval <= 0)
+			return -1;
+
+		wpa_s->scan_interval = interval;
+		wpa_s->sched_scan_interval = interval;
+
+		request_scan(wpa_s);
+	}
+
+	return 0;
+}