From 94aba17968a201b346d308f29e5fe163cab24e99 Mon Sep 17 00:00:00 2001
From: Denis Kenzior <denkenz@gmail.com>
Date: Mon, 22 Jun 2015 18:33:55 -0500
Subject: [PATCH] wiphy: Add auto-connect logic

---
 src/wiphy.c | 78 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 78 insertions(+)

diff --git a/src/wiphy.c b/src/wiphy.c
index 2d9f51ee..a4170003 100644
--- a/src/wiphy.c
+++ b/src/wiphy.c
@@ -932,6 +932,81 @@ static bool netdev_match(const void *a, const void *b)
 	return (netdev->index == index);
 }
 
+static bool netdev_try_autoconnect(struct netdev *netdev,
+					struct network *network,
+					struct scan_bss *bss)
+{
+	struct wiphy *wiphy = netdev->wiphy;
+
+	switch (network->ssid_security) {
+	case SCAN_SSID_SECURITY_NONE:
+		break;
+	case SCAN_SSID_SECURITY_PSK:
+	{
+		uint16_t pairwise_ciphers, group_ciphers;
+		const char *psk;
+		size_t len;
+
+		bss_get_supported_ciphers(bss,
+					&pairwise_ciphers, &group_ciphers);
+
+		if (!wiphy_select_cipher(wiphy, pairwise_ciphers) ||
+				!wiphy_select_cipher(wiphy, group_ciphers)) {
+			l_debug("Cipher mis-match");
+			return false;
+		}
+
+		if (network->ask_psk)
+			return false;
+
+		network->settings = storage_network_open("psk", network->ssid);
+		psk = l_settings_get_value(network->settings, "Security",
+						"PreSharedKey");
+
+		/* TODO: Blacklist the network from auto-connect */
+		if (!psk)
+			return false;
+
+		l_free(network->psk);
+		network->psk = l_util_from_hexstring(psk, &len);
+
+		if (network->psk && len != 32) {
+			l_free(network->psk);
+			network->psk = NULL;
+			return false;
+		}
+
+		break;
+	}
+	default:
+		return false;
+	}
+
+	mlme_authenticate_cmd(network, bss);
+	return true;
+}
+
+static void netdev_autoconnect_next(struct netdev *netdev)
+{
+	struct autoconnect_entry *entry;
+	bool r;
+
+	while ((entry = l_queue_pop_head(netdev->autoconnect_list))) {
+		l_debug("Considering autoconnecting to BSS '%s' with SSID: %s,"
+			" freq: %u, rank: %u, strength: %i",
+			bss_address_to_string(entry->bss),
+			entry->network->ssid,
+			entry->bss->frequency, entry->rank,
+			entry->bss->signal_strength);
+
+		r = netdev_try_autoconnect(netdev, entry->network, entry->bss);
+		l_free(entry);
+
+		if (r)
+			return;
+	}
+}
+
 static void wiphy_free(void *data)
 {
 	struct wiphy *wiphy = data;
@@ -1725,6 +1800,9 @@ static bool new_scan_results(uint32_t wiphy_id, uint32_t ifindex,
 	l_queue_destroy(netdev->old_bss_list, bss_free);
 	netdev->old_bss_list = NULL;
 
+	if (netdev->state == NETDEV_STATE_AUTOCONNECT)
+		netdev_autoconnect_next(netdev);
+
 	return true;
 }