* @author David Brodski
*/
+#ifndef PLUGIN_TRANSPORT_WLAN
+#define PLUGIN_TRANSPORT_WLAN
+
+#include <stdint.h>
#include "gnunet_common.h"
-typedef unsigned int uint32_t;
-typedef unsigned short uint16_t;
-/* Wlan IEEE80211 header default */
-static const uint8_t u8aIeeeHeader[] = {
- 0x08, 0x01, 0x00, 0x00,
- 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
- 0x13, 0x22, 0x33, 0x44, 0x55, 0x66,
- 0x13, 0x22, 0x33, 0x44, 0x55, 0x66,
- 0x10, 0x86,
+
+struct MacAddress
+{
+ u_int8_t mac[6];
+};
+
+struct Wlan_Helper_Control_Message
+{
+ struct GNUNET_MessageHeader hdr;
+ struct MacAddress mac;
};
/**
- * Wlan header
+ * Header for messages which need fragmentation
*/
+struct FragmentationHeader
+{
+
+ struct GNUNET_MessageHeader header;
-struct IeeeHeader
+ /**
+ * ID of message, to distinguish between the messages, picked randomly.
+ */
+ uint32_t message_id GNUNET_PACKED;
+
+ /**
+ * Offset or number of this fragment, for fragmentation/segmentation (design choice, TBD)
+ */
+ uint16_t fragment_off_or_num GNUNET_PACKED;
+
+ /**
+ * CRC of fragment (for error checking)
+ */
+ uint16_t message_crc GNUNET_PACKED;
+
+// followed by payload
+
+};
+
+/**
+ * Header for messages which need fragmentation
+ */
+struct WlanHeader
{
- /**
- * Wlan flags
- */
- uint8_t flags[4] GNUNET_PACKED;
-
- /**
- * first mac
- */
- uint8_t mac1[6] GNUNET_PACKED;
-
- /**
- * second mac
- */
- uint8_t mac2[6] GNUNET_PACKED;
-
- /**
- * third mac
- */
- uint8_t mac3[6] GNUNET_PACKED;
-
- /**
- * Wlan flags2
- */
- uint8_t flags2[2] GNUNET_PACKED;
+
+ struct GNUNET_MessageHeader header;
+
+ /**
+ * checksum/error correction
+ */
+ uint32_t crc GNUNET_PACKED;
+
+ /**
+ * To whom are we talking to (set to our identity
+ * if we are still waiting for the welcome message)
+ */
+ struct GNUNET_PeerIdentity target;
+
+// followed by payload
+
};
+/* Wlan IEEE80211 header default */
+//Informations (in German) http://www.umtslink.at/content/WLAN_macheader-196.html
+static const uint8_t u8aIeeeHeader[] =
+ {
+ 0x08, 0x01, // Frame Control 0x08= 00001000 -> | b1,2 = 0 -> Version 0;
+ // b3,4 = 10 -> Data; b5-8 = 0 -> Normal Data
+ // 0x01 = 00000001 -> | b1 = 1 to DS; b2 = 0 not from DS;
+ 0x00, 0x00, // Duration/ID
+ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // mac1 - in this case receiver
+ 0x13, 0x22, 0x33, 0x44, 0x55, 0x66, // mac2 - in this case sender
+ 0x13, 0x22, 0x33, 0x44, 0x55, 0x66, // mac3 - in this case bssid
+ 0x10, 0x86, //Sequence Control
+ };
+
+// gnunet bssid
+static const struct MacAddress mac_bssid =
+ { { 0x13, 0x22, 0x33, 0x44, 0x55, 0x66 } } ;
+
+// broadcast mac
+static const struct MacAddress bc_all_mac =
+ { { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF } };
+
+
/* this is the template radiotap header we send packets out with */
-static const uint8_t u8aRadiotapHeader[] = {
+static const uint8_t u8aRadiotapHeader[] =
+ {
+ 0x00, 0x00, // <-- radiotap version
+ 0x19, 0x00, // <- radiotap header length
+ 0x6f, 0x08, 0x00, 0x00, // <-- bitmap
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // <-- timestamp
+ 0x00, // <-- flags (Offset +0x10)
+ 0x6c, // <-- rate (0ffset +0x11)
+ 0x71, 0x09, 0xc0, 0x00, // <-- channel
+ 0xde, // <-- antsignal
+ 0x00, // <-- antnoise
+ 0x01, // <-- antenna
+};
- 0x00, 0x00, // <-- radiotap version
- 0x19, 0x00, // <- radiotap header length
- 0x6f, 0x08, 0x00, 0x00, // <-- bitmap
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // <-- timestamp
- 0x00, // <-- flags (Offset +0x10)
- 0x6c, // <-- rate (0ffset +0x11)
- 0x71, 0x09, 0xc0, 0x00, // <-- channel
- 0xde, // <-- antsignal
- 0x00, // <-- antnoise
- 0x01, // <-- antenna
+struct Radiotap_Send
+{
+ /**
+ * wlan send rate
+ */
+ uint8_t rate;
+
+ /**
+ * antenna
+ */
+ uint8_t antenna;
+
+ /**
+ * Transmit power expressed as unitless distance from max power set at factory calibration.
+ * 0 is max power. Monotonically nondecreasing with lower power levels.
+ */
+
+ uint16_t tx_power;
+};
+
+// bit field defines for ri_present
+
+#define has_noise 1
+#define has_power 2
+#define has_channel 4
+/**
+ * struct to represent infos gathered form the radiotap fields
+ */
+
+struct Radiotap_rx {
+ uint32_t ri_present;
+ uint64_t ri_mactime;
+ int32_t ri_power;
+ int32_t ri_noise;
+ uint32_t ri_channel;
+ uint32_t ri_freq;
+ uint32_t ri_rate;
+ uint32_t ri_antenna;
};
/**
* Radiotap Header
*/
-
struct RadiotapHeader
{
- /**
- * radiotap version
- */
- uint8_t version[2] GNUNET_PACKED;
-
- /**
- * radiotap header length
- */
- uint8_t lenght[2] GNUNET_PACKED;
-
- /**
- * bitmap
- */
- uint8_t bitmap[4] GNUNET_PACKED;
-
- /**
- * timestamp
- */
- uint8_t timestamp[8] GNUNET_PACKED;
-
- /**
- * radiotap flags
- */
- uint8_t flags GNUNET_PACKED;
-
- /**
- * wlan send rate
- */
- uint8_t rate GNUNET_PACKED;
-
- /**
- * Wlan channel
- */
- uint8_t channel[4] GNUNET_PACKED;
-
- /**
- * antsignal
- */
- uint8_t antsignal GNUNET_PACKED;
-
- /**
- * antnoise
- */
- uint8_t antnoise GNUNET_PACKED;
-
- /**
- * antenna
- */
- uint8_t antenna GNUNET_PACKED;
+ /**
+ * radiotap version
+ */
+ u_int8_t version;
+
+ u_int8_t pad_version;
+
+ /**
+ * radiotap header length
+ */
+ uint16_t length GNUNET_PACKED;
+
+ /**
+ * bitmap, fields present
+ */
+ uint32_t bitmap GNUNET_PACKED;
+
+ /**
+ * timestamp
+ */
+ uint64_t timestamp GNUNET_PACKED;
+
+ /**
+ * radiotap flags
+ */
+ uint8_t flags;
+
+ /**
+ * wlan send rate
+ */
+ uint8_t rate;
+
+ // FIXME: unaligned here, is this OK?
+ /**
+ * Wlan channel
+ */
+ uint32_t channel GNUNET_PACKED;
+
+ /**
+ * antsignal
+ */
+ uint8_t antsignal;
+
+ /**
+ * antnoise
+ */
+ uint8_t antnoise;
+
+ /**
+ * antenna
+ */
+ uint8_t antenna;
};
+#endif
projects / oweals / gnunet.git / blobdiff