Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / ipxe / src / net / 80211 / wpa_psk.c

diff --git a/qemu/roms/ipxe/src/net/80211/wpa_psk.c b/qemu/roms/ipxe/src/net/80211/wpa_psk.c
new file mode 100644 (file)
index 0000000..71190b1
--- /dev/null
+++ b/qemu/roms/ipxe/src/net/80211/wpa_psk.c
@@ -0,0 +1,127 @@
+/*
+ * Copyright (c) 2009 Joshua Oreman <oremanj@rwcr.net>.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or any later version.
+ *
+ * This program 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#include <string.h>
+#include <ipxe/net80211.h>
+#include <ipxe/sha1.h>
+#include <ipxe/wpa.h>
+#include <errno.h>
+
+/** @file
+ *
+ * Frontend for WPA using a pre-shared key.
+ */
+
+/**
+ * Initialise WPA-PSK state
+ *
+ * @v dev      802.11 device
+ * @ret rc     Return status code
+ */
+static int wpa_psk_init ( struct net80211_device *dev )
+{
+       return wpa_make_rsn_ie ( dev, &dev->rsn_ie );
+}
+
+/**
+ * Start WPA-PSK authentication
+ *
+ * @v dev      802.11 device
+ * @ret rc     Return status code
+ */
+static int wpa_psk_start ( struct net80211_device *dev )
+{
+       char passphrase[64+1];
+       u8 pmk[WPA_PMK_LEN];
+       int len;
+       struct wpa_common_ctx *ctx = dev->handshaker->priv;
+
+       len = fetch_string_setting ( netdev_settings ( dev->netdev ),
+                                    &net80211_key_setting, passphrase,
+                                    64 + 1 );
+
+       if ( len <= 0 ) {
+               DBGC ( ctx, "WPA-PSK %p: no passphrase provided!\n", ctx );
+               net80211_deauthenticate ( dev, -EACCES );
+               return -EACCES;
+       }
+
+       pbkdf2_sha1 ( passphrase, len, dev->essid, strlen ( dev->essid ),
+                     4096, pmk, WPA_PMK_LEN );
+
+       DBGC ( ctx, "WPA-PSK %p: derived PMK from passphrase `%s':\n", ctx,
+              passphrase );
+       DBGC_HD ( ctx, pmk, WPA_PMK_LEN );
+
+       return wpa_start ( dev, ctx, pmk, WPA_PMK_LEN );
+}
+
+/**
+ * Step WPA-PSK authentication
+ *
+ * @v dev      802.11 device
+ * @ret rc     Return status code
+ */
+static int wpa_psk_step ( struct net80211_device *dev )
+{
+       struct wpa_common_ctx *ctx = dev->handshaker->priv;
+
+       switch ( ctx->state ) {
+       case WPA_SUCCESS:
+               return 1;
+       case WPA_FAILURE:
+               return -EACCES;
+       default:
+               return 0;
+       }
+}
+
+/**
+ * Do-nothing function; you can't change a WPA key post-authentication
+ *
+ * @v dev      802.11 device
+ * @ret rc     Return status code
+ */
+static int wpa_psk_no_change_key ( struct net80211_device *dev __unused )
+{
+       return 0;
+}
+
+/**
+ * Disable handling of received WPA authentication frames
+ *
+ * @v dev      802.11 device
+ */
+static void wpa_psk_stop ( struct net80211_device *dev )
+{
+       wpa_stop ( dev );
+}
+
+/** WPA-PSK security handshaker */
+struct net80211_handshaker wpa_psk_handshaker __net80211_handshaker = {
+       .protocol = NET80211_SECPROT_PSK,
+       .init = wpa_psk_init,
+       .start = wpa_psk_start,
+       .step = wpa_psk_step,
+       .change_key = wpa_psk_no_change_key,
+       .stop = wpa_psk_stop,
+       .priv_len = sizeof ( struct wpa_common_ctx ),
+};