network: Add initial network usage tracking

Makefile.am

@@ -58,6 +58,7 @@ src_iwd_SOURCES = src/main.c linux/nl80211.h linux/kdbus.h \
 					src/util.h src/util.c \
 					src/agent.h src/agent.c \
 					src/storage.h src/storage.c \
+					src/network.h src/network.c \
 					iwd.h
 src_iwd_LDADD = ell/libell-internal.la
 

src/network.c

@@ -0,0 +1,149 @@
+/*
+ *
+ *  Wireless daemon for Linux
+ *
+ *  Copyright (C) 2013-2015  Intel Corporation. All rights reserved.
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2.1 of the License, or (at your option) any later version.
+ *
+ *  This library is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public
+ *  License along with this library; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <sys/types.h>
+
+#include <ell/ell.h>
+
+#include "src/network.h"
+#include "src/storage.h"
+#include "src/scan.h"
+
+struct network_info {
+	char ssid[33];
+	uint32_t type;
+	struct timespec connected_time;		/* Time last connected */
+};
+
+static struct l_queue *networks = NULL;
+
+static int timespec_compare(const void *a, const void *b, void *user_data)
+{
+	const struct network_info *ni_a = a;
+	const struct network_info *ni_b = b;
+	const struct timespec *tsa = &ni_a->connected_time;
+	const struct timespec *tsb = &ni_b->connected_time;
+
+	if (tsa->tv_sec > tsb->tv_sec)
+		return -1;
+
+	if (tsa->tv_sec < tsb->tv_sec)
+		return 1;
+
+	if (tsa->tv_nsec > tsb->tv_nsec)
+		return -1;
+
+	if (tsa->tv_nsec < tsb->tv_nsec)
+		return -1;
+
+	return 0;
+}
+
+static bool network_info_match(const void *a, const void *b)
+{
+	const struct network_info *ni_a = a;
+	const struct network_info *ni_b = b;
+
+	if (ni_a->type != ni_b->type)
+		return false;
+
+	if (strcmp(ni_a->ssid, ni_b->ssid))
+		return false;
+
+	return true;
+}
+
+bool network_seen(uint32_t type, const char *ssid)
+{
+	struct timespec mtim;
+	int err;
+	struct network_info *info;
+
+	switch(type) {
+	case SCAN_SSID_SECURITY_PSK:
+		err = storage_network_get_mtime("psk", ssid, &mtim);
+		break;
+	default:
+		return false;
+	}
+
+	if (err < 0)
+		return false;
+
+	info = l_new(struct network_info, 1);
+	info->type = type;
+	strncpy(info->ssid, ssid, 32);
+	info->ssid[32] = 0;
+	memcpy(&info->connected_time, &mtim, sizeof(struct timespec));
+
+	l_queue_insert(networks, info, timespec_compare, NULL);
+
+	return true;
+}
+
+bool network_connected(uint32_t type, const char *ssid)
+{
+	int err;
+	struct network_info *info;
+	struct network_info search;
+
+	search.type = type;
+	strncpy(search.ssid, ssid, 32);
+	search.ssid[32] = 0;
+
+	info = l_queue_remove_if(networks, network_info_match, &search);
+	if (!info)
+		return false;
+
+	switch(type) {
+	case SCAN_SSID_SECURITY_PSK:
+		err = storage_network_get_mtime("psk", ssid,
+					&info->connected_time);
+		break;
+	default:
+		goto fail;
+	}
+
+	if (err < 0)
+		goto fail;
+
+	l_queue_push_head(networks, info);
+	return true;
+
+fail:
+	l_free(info);
+	return false;
+}
+
+void network_init()
+{
+	networks = l_queue_new();
+}
+
+void network_exit()
+{
+	l_queue_destroy(networks, l_free);
+}

src/network.h

@@ -0,0 +1,29 @@
+/*
+ *
+ *  Wireless daemon for Linux
+ *
+ *  Copyright (C) 2013-2015  Intel Corporation. All rights reserved.
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2.1 of the License, or (at your option) any later version.
+ *
+ *  This library is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public
+ *  License along with this library; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#include <stdbool.h>
+
+bool network_seen(uint32_t type, const char *ssid);
+bool network_connected(uint32_t type, const char *ssid);
+
+void network_init();
+void network_exit();