#include "plugin_transport_wlan.h"
#include "gnunet_common.h"
#include "gnunet_crypto_lib.h"
+#include "gnunet_fragmentation_lib.h"
+//#include "wlan/ieee80211.h"
+//#include <netinet/ip.h>
+
+#include <string.h>
#define PROTOCOL_PREFIX "wlan"
/**
* Max size of packet from helper
*/
-#define WLAN_MTU 3000
+#define WLAN_MTU 1450
/**
* Time until retransmission of a fragment in ms
*/
#define FRAGMENT_TIMEOUT GNUNET_TIME_UNIT_SECONDS
+/**
+ * max size of fragment queue
+ */
#define FRAGMENT_QUEUE_SIZE 10
+/**
+ * max messages in fragment queue per session/client
+ */
#define FRAGMENT_QUEUE_MESSAGES_OUT_PER_SESSION 1
+/**
+ * max messages in fragment queue per MAC
+ */
+#define FRAGMENT_QUEUE_MESSAGES_OUT_PER_MACENDPOINT 1
+
+/**
+ * time until message in in queue
+ */
#define MESSAGE_IN_TIMEOUT GNUNET_TIME_UNIT_SECONDS
+/**
+ * max messages in in queue
+ */
#define MESSAGES_IN_QUEUE_SIZE 10
-#define MESSAGES_IN_QUEUE_PER_SESSION 1
-
+/**
+ * max messages in in queue per session/client
+ */
+#define MESSAGES_IN_DEFRAG_QUEUE_PER_MAC 1
+/**
+ * scaling factor for hello beacon
+ */
#define HALLO_BEACON_SCALING_FACTOR 900
-#define DEBUG_wlan GNUNET_YES
+#define DEBUG_wlan GNUNET_NO
+#define DEBUG_wlan_retransmission GNUNET_NO
+#define DEBUG_wlan_ip_udp_packets_on_air GNUNET_NO
#define MESSAGE_LENGHT_UNKNOWN -1
//#define NO_MESSAGE_OR_MESSAGE_FINISHED -2
-
+/**
+ * size of log for recently used incomming messages id
+ */
+#define MESSAGE_ID_BACKLOG_SIZE 5
/**
* After how long do we expire an address that we
* learned from another peer if it is not reconfirmed
*/
#define LEARNED_ADDRESS_EXPIRATION GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_HOURS, 6)
+#define IEEE80211_ADDR_LEN 6 /* size of 802.11 address */
+
+#define IEEE80211_FC0_VERSION_MASK 0x03
+#define IEEE80211_FC0_VERSION_SHIFT 0
+#define IEEE80211_FC0_VERSION_0 0x00
+#define IEEE80211_FC0_TYPE_MASK 0x0c
+#define IEEE80211_FC0_TYPE_SHIFT 2
+#define IEEE80211_FC0_TYPE_MGT 0x00
+#define IEEE80211_FC0_TYPE_CTL 0x04
+#define IEEE80211_FC0_TYPE_DATA 0x08
+
+/*
+ * Structure of an internet header, naked of options.
+ */
+struct iph
+{
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+ unsigned int ip_hl :4; /* header length */
+ unsigned int ip_v :4; /* version */
+#endif
+#if __BYTE_ORDER == __BIG_ENDIAN
+ unsigned int ip_v:4; /* version */
+ unsigned int ip_hl:4; /* header length */
+#endif
+ u_int8_t ip_tos; /* type of service */
+ u_short ip_len; /* total length */
+ u_short ip_id; /* identification */
+ u_short ip_off; /* fragment offset field */
+#define IP_RF 0x8000 /* reserved fragment flag */
+#define IP_DF 0x4000 /* dont fragment flag */
+#define IP_MF 0x2000 /* more fragments flag */
+#define IP_OFFMASK 0x1fff /* mask for fragmenting bits */
+ u_int8_t ip_ttl; /* time to live */
+ u_int8_t ip_p; /* protocol */
+ u_short ip_sum; /* checksum */
+ struct in_addr ip_src, ip_dst; /* source and dest address */
+};
+
+struct udphdr
+{
+ u_int16_t source;
+ u_int16_t dest;
+ u_int16_t len;
+ u_int16_t check;
+};
+
+/*
+ * generic definitions for IEEE 802.11 frames
+ */
+struct ieee80211_frame
+{
+ u_int8_t i_fc[2];
+ u_int8_t i_dur[2];
+ u_int8_t i_addr1[IEEE80211_ADDR_LEN];
+ u_int8_t i_addr2[IEEE80211_ADDR_LEN];
+ u_int8_t i_addr3[IEEE80211_ADDR_LEN];
+ u_int8_t i_seq[2];
+#if DEBUG_wlan_ip_udp_packets_on_air
+u_int8_t llc[4];
+struct iph ip;
+struct udphdr udp;
+#endif
+}GNUNET_PACKED;
/**
* Initial handshake message for a session.
*/
struct GNUNET_TRANSPORT_PluginEnvironment *env;
/**
- * List of open sessions. head
+ * List of open connections. head
*/
- struct Sessionqueue *sessions;
+ struct MacEndpoint * mac_head;
/**
- * List of open sessions. tail
+ * List of open connections. tail
*/
- struct Sessionqueue *sessions_tail;
+ struct MacEndpoint * mac_tail;
/**
- * Number of sessions
+ * Number of connections
*/
-
- int session_count;
+ unsigned int mac_count;
/**
* encapsulation of data from the local wlan helper program
*/
-
struct GNUNET_SERVER_MessageStreamTokenizer * suid_tokenizer;
/**
- * encapsulation of packets received
+ * encapsulation of packets received from the wlan helper
*/
-
struct GNUNET_SERVER_MessageStreamTokenizer * data_tokenizer;
/**
/**
* Sessions currently pending for transmission
- * to this peer, if any.
+ * to a peer, if any.
*/
- struct Sessionqueue * pending_Sessions;
+ struct Sessionqueue * pending_Sessions_head;
/**
* Sessions currently pending for transmission
- * to this peer (tail), if any.
+ * to a peer (tail), if any.
*/
struct Sessionqueue * pending_Sessions_tail;
unsigned int pendingsessions;
/**
- * Messages in the fragmentation queue, head
- */
-
- struct FragmentMessage * pending_Fragment_Messages_head;
-
- /**
- * Messages in the fragmentation queue, tail
- */
-
- struct FragmentMessage * pending_Fragment_Messages_tail;
-
- /**
- * number of pending fragment message
- */
-
- unsigned int pending_fragment_messages;
-
- /**
- * Messages in the in Queue, head
+ * Messages in the sending queues
*/
-
- struct Receive_Message_Queue * receive_messages_head;
+ int pending_Fragment_Messages;
/**
- * Messages in the in Queue, tail
+ * messages ready for send, head
*/
-
- struct Receive_Message_Queue * receive_messages_teil;
-
+ struct FragmentMessage_queue * sending_messages_head;
/**
- * number of messages in the in queue
+ * messages ready for send, tail
*/
-
- unsigned int pending_receive_messages;
-
+ struct FragmentMessage_queue * sending_messages_tail;
/**
* time of the next "hello-beacon"
*/
-
struct GNUNET_TIME_Absolute beacon_time;
/**
* queue to send acks for received fragments (head)
*/
-
struct AckSendQueue * ack_send_queue_head;
/**
* queue to send acks for received fragments (tail)
*/
-
struct AckSendQueue * ack_send_queue_tail;
+ /**
+ * Tracker for bandwidth limit
+ */
+ struct GNUNET_BANDWIDTH_Tracker tracker;
};
/**
/**
* Queue of sessions, for the general session queue and the pending session queue
*/
-
+//TODO DOXIGEN
struct Sessionqueue
{
struct Sessionqueue * next;
};
/**
- * Queue for the fragments received
+ * Queue of fragmented messages, for the sending queue of the plugin
*/
+//TODO DOXIGEN
+struct FragmentMessage_queue
+{
+ struct FragmentMessage_queue * next;
+ struct FragmentMessage_queue * prev;
+ struct FragmentMessage * content;
+};
+/**
+ * Queue for the fragments received
+ */
+//TODO DOXIGEN
struct Receive_Fragment_Queue
{
struct Receive_Fragment_Queue * next;
uint16_t num;
const char * msg;
uint16_t size;
+ struct Radiotap_rx rxinfo;
};
-/**
- * Queue for the fragments received
- */
-
-struct Receive_Message_Queue
+//TODO DOXIGEN
+struct MacEndpoint_id_fragment_triple
{
- struct Receive_Message_Queue * next;
-
- struct Receive_Message_Queue * prev;
-
- /**
- * current number for message incoming, to distinguish between the messages
- */
- uint32_t message_id_in;
-
- /**
- * size of the message received,
- * MESSAGE_LENGHT_UNKNOWN means that the size is not known,
- * NO_MESSAGE_OR_MESSAGE_FINISHED means no message received
- */
-
- int rec_size;
-
- /**
- * Sorted queue with the fragments received; head
- */
-
- struct Receive_Fragment_Queue * frag_head;
-
- /**
- * Sorted queue with the fragments received; tail
- */
-
- struct Receive_Fragment_Queue * frag_tail;
-
- /**
- * Session this fragment belongs to
- */
+ struct MacEndpoint * endpoint;
+ uint32_t message_id;
+ struct FragmentMessage * fm;
+};
+//TODO DOXIGEN
+struct Plugin_Session_pair
+{
+ struct Plugin * plugin;
struct Session * session;
-
- /**
- * Timeout value for the pending message.
- */
- struct GNUNET_TIME_Absolute timeout;
-
- /**
- * Bitfield of received fragments
- */
-
- uint64_t received_fragments;
};
/**
*/
struct PendingMessage
{
+ /**
+ * dll next
+ */
+ struct PendingMessage * next;
+ /**
+ * dll prev
+ */
+ struct PendingMessage * prev;
/**
* The pending message
*/
- char *msg;
+ struct WlanHeader *msg;
/**
* Size of the message
/**
* Queue for acks to send for fragments recived
*/
-//TODO comments
struct AckSendQueue
{
+ /**
+ * next ack in the ack send queue
+ */
struct AckSendQueue * next;
+ /**
+ * previous ack in the ack send queue
+ */
struct AckSendQueue * prev;
-
- struct Session * session;
+ /**
+ * pointer to the session this ack belongs to
+ */
+ struct MacEndpoint * endpoint;
/**
* ID of message, to distinguish between the messages, picked randomly.
*/
uint32_t message_id;
/**
- * Bit field for received fragments
+ * msg to send
*/
- uint64_t fragments_field;
-
+ struct GNUNET_MessageHeader * hdr;
+ /**
+ * pointer to the ieee wlan header
+ */
+ struct ieee80211_frame * ieeewlanheader;
+ /**
+ * pointer to the radiotap header
+ */
+ struct Radiotap_Send * radioHeader;
};
/**
/**
* peer mac address
*/
- uint8_t addr[6];
+ struct MacAddress addr;
+
+ /**
+ * mac endpoint
+ */
+ struct MacEndpoint * macendpoint;
};
/**
*/
struct SessionHeader header;
- /**
- * Pointer to the global plugin struct.
- */
- struct Plugin *plugin;
-
/**
* Message currently pending for transmission
- * to this peer, if any.
+ * to this peer, if any. head
*/
- struct PendingMessage *pending_message;
+ struct PendingMessage * pending_message_head;
/**
* Message currently pending for transmission
- * to this peer, if any.
+ * to this peer, if any. tail
*/
- struct PendingMessage *pending_message2;
+ struct PendingMessage * pending_message_tail;
/**
* To whom are we talking to (set to our identity
*/
struct GNUNET_PeerIdentity target;
- /**
- * peer mac address
- */
- char addr[6];
-
/**
* Address of the other peer (either based on our 'connect'
* call or on our 'accept' call).
struct GNUNET_TIME_Absolute last_activity;
/**
- * count of messages in the fragment out queue for this session
+ * peer connection
*/
-
- int fragment_messages_out_count;
+ struct MacEndpoint * mac;
/**
- * count of messages in the fragment in queue for this session
+ * count of messages in the fragment out queue for this session
*/
- int fragment_messages_in_count;
+ int fragment_messages_out_count;
};
/**
- * Struct for Messages in the fragment queue
+ * Struct to represent one network card connection
*/
-
-struct FragmentMessage
+struct MacEndpoint
{
/**
- * Session this message belongs to
+ * Pointer to the global plugin struct.
*/
-
- struct Session *session;
-
+ struct Plugin *plugin;
/**
- * This is a doubly-linked list.
+ * Struct to hold the session reachable over this mac; head
*/
- struct FragmentMessage *next;
-
+ struct Sessionqueue * sessions_head;
/**
- * This is a doubly-linked list.
+ * Struct to hold the session reachable over this mac; tail
*/
- struct FragmentMessage *prev;
-
+ struct Sessionqueue * sessions_tail;
/**
- * The pending message
+ * Messages currently sending
+ * to a peer, if any.
*/
- char *msg;
+ struct FragmentMessage * sending_messages_head;
/**
- * Timeout value for the pending message.
+ * Messages currently sending
+ * to a peer (tail), if any.
*/
- struct GNUNET_TIME_Absolute timeout;
-
+ struct FragmentMessage * sending_messages_tail;
/**
- * Timeout value for the pending fragments.
- * Stores the time when the next msg fragment ack has to be received
+ * dll next
*/
- struct GNUNET_TIME_Absolute next_ack;
-
+ struct MacEndpoint *next;
/**
- * bitfield with all acks received for this message
+ * dll prev
*/
- uint64_t ack_bitfield;
+ struct MacEndpoint *prev;
/**
- * Size of the message
+ * peer mac address
*/
- size_t message_size;
+ struct MacAddress addr;
/**
- * pos / next fragment number in the message, for fragmentation/segmentation,
- * some acks can be missing but there is still time
+ * Defrag context for this mac endpoint
*/
- uint32_t message_pos;
+ struct GNUNET_DEFRAGMENT_Context * defrag;
/**
- * current number for message outgoing, to distinguish between the messages
+ * count of messages in the fragment out queue for this mac endpoint
*/
- uint32_t message_id_out;
-};
-/**
- * Header for messages which need fragmentation
- */
-struct WlanHeader
-{
+ int fragment_messages_out_count;
- struct GNUNET_MessageHeader header;
+ //TODO DOXIGEN
+ uint8_t rate;
+ uint16_t tx_power;
+ uint8_t antenna;
/**
- * checksum/error correction
+ * Duplicates received
*/
- uint32_t crc GNUNET_PACKED;
+ int dups;
/**
- * To whom are we talking to (set to our identity
- * if we are still waiting for the welcome message)
+ * Fragments received
*/
- struct GNUNET_PeerIdentity target;
-
-// followed by payload
+ int fragc;
+ /**
+ * Acks received
+ */
+ int acks;
};
/**
- * Header for messages which need fragmentation
+ * Struct for Messages in the fragment queue
*/
-struct FragmentationHeader
-{
- struct GNUNET_MessageHeader header;
+struct FragmentMessage
+{
/**
- * ID of message, to distinguish between the messages, picked randomly.
+ * Session this message belongs to
*/
- uint32_t message_id GNUNET_PACKED;
+
+ struct Session *session;
/**
- * Offset or number of this fragment, for fragmentation/segmentation (design choice, TBD)
+ * This is a doubly-linked list.
*/
- uint16_t fragment_off_or_num GNUNET_PACKED;
+ struct FragmentMessage *next;
/**
- * CRC of fragment (for error checking)
+ * This is a doubly-linked list.
*/
- uint16_t message_crc GNUNET_PACKED;
-
-// followed by payload
-
-};
+ struct FragmentMessage *prev;
-/**
- * Header for messages which need fragmentation
- */
-struct FragmentationAckHeader
-{
+ /**
+ * Timeout value for the pending message.
+ */
+ struct GNUNET_TIME_Absolute timeout;
- struct GNUNET_MessageHeader header;
+ /**
+ * Fragmentation context
+ */
+ struct GNUNET_FRAGMENT_Context * fragcontext;
/**
- * ID of message, to distinguish between the messages, picked randomly.
+ * Fragment to send
*/
- uint32_t message_id GNUNET_PACKED;
+ char * frag;
/**
- * Offset or number of this fragment, for fragmentation/segmentation (design choice, TBD)
+ * size of message
*/
- uint64_t fragment_field GNUNET_PACKED;
+ size_t size;
+ /**
+ * pointer to the ieee wlan header
+ */
+ struct ieee80211_frame * ieeewlanheader;
+ /**
+ * pointer to the radiotap header
+ */
+ struct Radiotap_Send * radioHeader;
};
-int
-getRadiotapHeader(struct RadiotapHeader * Header);
-
-int
-getWlanHeader(struct IeeeHeader * Header, const char * to_mac_addr,
- struct Plugin * plugin);
-
-static int
-wlan_plugin_address_suggested(void *cls, const void *addr, size_t addrlen);
-
-uint16_t
-getcrc16(const char *msgbuf, size_t msgbuf_size);
-
static void
do_transmit(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
-
-static void
-check_fragment_queue(struct Plugin * plugin);
-
-uint32_t
-getcrc32(const char *msgbuf, size_t msgbuf_size);
-
-static void
-free_receive_message(struct Plugin* plugin,
- struct Receive_Message_Queue * rec_message);
-
-struct Receive_Message_Queue *
-get_receive_message_from_session(struct Plugin * plugin,
- struct Session * session);
-
-static void
-wlan_data_helper(void *cls, struct Session_light * session_light,
- const struct GNUNET_MessageHeader * hdr);
-
static void
-wlan_process_helper(void *cls, void *client,
- const struct GNUNET_MessageHeader *hdr);
+free_session(struct Plugin * plugin, struct Sessionqueue * queue,
+ int do_free_macendpoint);
+static struct MacEndpoint *
+create_macendpoint(struct Plugin *plugin, const struct MacAddress *addr);
-static void
-finish_sending(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
+/**
+ * Generates a nice hexdump of a memory area.
+ *
+ * \param mem pointer to memory to dump
+ * \param length how many bytes to dump
+ */
+void
+hexdump(void *mem, unsigned length)
+{
+ char line[80];
+ char *src = (char*) mem;
-static void
-wlan_data_massage_handler(struct Plugin * plugin,
- struct Session_light * session_light,
- const struct GNUNET_MessageHeader * hdr);
+ printf(
+ "dumping %u bytes from %p\r\n"
+ " 0 1 2 3 4 5 6 7 8 9 A B C D E F 0123456789ABCDEF\r\n",
+ length, src);
+ unsigned i;
+ int j;
-static const char *
-wlan_plugin_address_to_string(void *cls, const void *addr, size_t addrlen);
+ for (i = 0; i < length; i += 16, src += 16)
+ {
+ char *t = line;
-struct Receive_Message_Queue *
-get_receive_message(struct Plugin * plugin, struct Session * session,
- uint32_t message_id);
+ t += sprintf(t, "%04x: ", i);
+ for (j = 0; j < 16; j++)
+ {
+ if (i + j < length)
+ t += sprintf(t, "%02X", src[j] & 0xff);
+ else
+ t += sprintf(t, " ");
+ t += sprintf(t, j % 2 ? " " : "-");
+ }
-static uint64_t
-htonll(uint64_t input)
-{
- return input;
-}
+ t += sprintf(t, " ");
+ for (j = 0; j < 16; j++)
+ {
+ if (i + j < length)
+ {
+ if (isprint((unsigned char)src[j]))
+ t += sprintf(t, "%c", src[j]);
+ else
+ t += sprintf(t, ".");
+ }
+ else
+ {
+ t += sprintf(t, " ");
+ }
+ }
-static uint64_t
-ntohll(uint64_t input)
-{
- return input;
+ t += sprintf(t, "\r\n");
+ printf("%s", line);
+ }
}
/**
- * Sets a bit active in the bitArray. Increment bit-specific
- * usage counter on disk only if below 4bit max (==15).
- *
- * @param bitArray memory area to set the bit in
- * @param bitIdx which bit to set
+ * Function to find a MacEndpoint with a specific mac addr
+ * @param plugin pointer to the plugin struct
+ * @param addr pointer to the mac address
+ * @param create_new GNUNET_YES if a new end point should be created
+ * @return
*/
-static void
-setBit(char *bitArray, unsigned int bitIdx)
+static struct MacEndpoint *
+get_macendpoint(struct Plugin *plugin, const struct MacAddress *addr,
+ int create_new)
{
- size_t arraySlot;
- unsigned int targetBit;
-
- arraySlot = bitIdx / 8;
- targetBit = (1L << (bitIdx % 8));
- bitArray[arraySlot] |= targetBit;
-}
+ struct MacEndpoint * queue = plugin->mac_head;
+ while (queue != NULL)
+ {
+ GNUNET_assert (queue->sessions_head != NULL);
+ if (memcmp(addr, &queue->addr, sizeof(struct MacAddress)) == 0)
+ return queue; /* session found */
+ queue = queue->next;
+ }
-/**
- * Clears a bit from bitArray. Bit is cleared from the array
- * only if the respective usage counter on the disk hits/is zero.
- *
- * @param bitArray memory area to set the bit in
- * @param bitIdx which bit to unset
- */
-/*static void
-clearBit(char *bitArray, unsigned int bitIdx)
-{
- size_t slot;
- unsigned int targetBit;
-
- slot = bitIdx / 8;
- targetBit = (1L << (bitIdx % 8));
- bitArray[slot] = bitArray[slot] & (~targetBit);
-}*/
-
-/**
- * Checks if a bit is active in the bitArray
- *
- * @param bitArray memory area to set the bit in
- * @param bitIdx which bit to test
- * @return GNUNET_YES if the bit is set, GNUNET_NO if not.
- */
-static int
-testBit(char *bitArray, unsigned int bitIdx)
-{
- size_t slot;
- unsigned int targetBit;
-
- slot = bitIdx / 8;
- targetBit = (1L << (bitIdx % 8));
- if (bitArray[slot] & targetBit)
- return GNUNET_YES;
+ if (create_new == GNUNET_YES)
+ {
+ return create_macendpoint(plugin, addr);
+ }
else
- return GNUNET_NO;
-}
-
-/**
- * Sets a bit active in the bitArray.
- *
- * @param bitArray memory area to set the bit in
- * @param bitIdx which bit to set
- */
-/*static uint64_t
- setBit (uint64_t bitArray, unsigned int bitIdx)
- {
- uint64_t targetBit;
-
- targetBit = (1ULL << bitIdx);
- return bitArray | targetBit;
- }
- */
-/**
- * Clears a bit from bitArray.
- *
- * @param bitArray memory area to set the bit in
- * @param bitIdx which bit to unset
- */
-/*static uint64_t
- clearBit (uint64_t bitArray, unsigned int bitIdx)
- {
- uint64_t targetBit;
-
- targetBit = (1ULL << bitIdx);
- return bitArray & (~targetBit);
- }
- */
-/**
- * Checks if a bit is active in the bitArray
- *
- * @param bitArray memory area to set the bit in
- * @param bitIdx which bit to test
- * @return GNUNET_YES if the bit is set, GNUNET_NO if not.
- */
-/*static int
- testBit (uint64_t bitArray, unsigned int bitIdx)
- {
- uint64_t targetBit;
-
-
- targetBit = (1ULL << bitIdx);
- if (bitArray & targetBit)
- return GNUNET_YES;
- else
- return GNUNET_NO;
- }
- */
-/**
- * get the next message number, at the moment just a random one
- * @return returns the next valid message-number for sending packets
- */
-uint32_t
-get_next_message_id()
-{
- return GNUNET_CRYPTO_random_u32(GNUNET_CRYPTO_QUALITY_NONCE, UINT32_MAX);
-}
+ {
+ return NULL;
+ }
-/**
- * start next message number generator
- * (not necessary at the moment)
- */
-void
-start_next_message_id()
-{
- //GNUNET_CRYPTO_random_init;
}
-
/**
- * search for a session with the addr
+ * search for a session with the addr and peer id
*
* @param plugin pointer to the plugin struct
* @param addr pointer to the mac address of the peer
+ * @param peer pointer to the peerid
* @return returns the session
*/
-
static struct Session *
-search_session(struct Plugin *plugin, const uint8_t * addr)
+search_session(struct Plugin *plugin, const struct MacEndpoint * endpoint,
+ const struct GNUNET_PeerIdentity * peer)
{
- struct Sessionqueue * queue = plugin->sessions;
- struct Sessionqueue * lastitem = NULL;
+ GNUNET_assert(endpoint != NULL);
+ struct Sessionqueue * queue = endpoint->sessions_head;
- //just look at all the session for the needed one
while (queue != NULL)
{
- // content is never NULL
GNUNET_assert (queue->content != NULL);
- char * addr2 = queue->content->addr;
- if (memcmp(addr, addr2, 6) == 0)
- {
- //sesion found
- return queue->content;
- }
- // try next
- lastitem = queue;
+ if (memcmp(peer, &queue->content->target,
+ sizeof(struct GNUNET_PeerIdentity)) == 0)
+ return queue->content; /* session found */
queue = queue->next;
}
return NULL;
}
+/**
+ * Function called for a quick conversion of the binary address to
+ * a numeric address. Note that the caller must not free the
+ * address and that the next call to this function is allowed
+ * to override the address again.
+ *
+ * @param cls closure
+ * @param addr binary address
+ * @param addrlen length of the address
+ * @return string representing the same address
+ */
+static const char*
+wlan_plugin_address_to_string(void *cls, const void *addr, size_t addrlen)
+{
+ static char ret[40];
+ const struct MacAddress *mac;
+
+ if (addrlen != sizeof(struct MacAddress))
+ {
+ GNUNET_break (0);
+ return NULL;
+ }
+ mac = addr;
+ GNUNET_snprintf(ret, sizeof(ret), "%s Mac-Address %X:%X:%X:%X:%X:%X",
+ PROTOCOL_PREFIX, mac->mac[0], mac->mac[1], mac->mac[2], mac->mac[3],
+ mac->mac[4], mac->mac[5]);
+ return ret;
+}
+
/**
* create a new session
*
* @param plugin pointer to the plugin struct
- * @param addr pointer to the mac address of the peer
+ * @param addr pointer to the mac endpoint of the peer
* @return returns the session
*/
static struct Session *
-create_session(struct Plugin *plugin, const uint8_t * addr)
+create_session(struct Plugin *plugin, struct MacEndpoint * endpoint,
+ const struct GNUNET_PeerIdentity * peer)
{
+ GNUNET_assert(endpoint != NULL);
struct Sessionqueue * queue = GNUNET_malloc (sizeof (struct Sessionqueue));
- GNUNET_CONTAINER_DLL_insert_tail(plugin->sessions, plugin->sessions_tail, queue);
+ GNUNET_CONTAINER_DLL_insert_tail(endpoint->sessions_head, endpoint->sessions_tail, queue);
queue->content = GNUNET_malloc (sizeof (struct Session));
- queue->content->plugin = plugin;
- memcpy(queue->content->addr, addr, 6);
- queue->content->fragment_messages_out_count = 0;
- queue->content->fragment_messages_in_count = 0;
-
- plugin->session_count++;
+ queue->content->mac = endpoint;
+ memcpy(&(queue->content->target), peer, sizeof(struct GNUNET_PeerIdentity));
#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "New session %p with %s\n",
- queue->content, wlan_plugin_address_to_string(NULL, addr, 6));
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "New session %p with endpoint %p: %s\n",
+ queue->content, endpoint,
+ wlan_plugin_address_to_string(NULL, endpoint->addr.mac, 6));
#endif
return queue->content;
}
/**
- * get Session from address, create if no session exists
+ * Get session from address, create if no session exists
*
* @param plugin pointer to the plugin struct
* @param addr pointer to the mac address of the peer
+ * @param peer pointer to the peerid
* @return returns the session
*/
-//TODO add other possibilities to find the right session (are there other?)
static struct Session *
-get_Session(struct Plugin *plugin, const uint8_t * addr)
+get_session(struct Plugin *plugin, const struct MacAddress *addr,
+ const struct GNUNET_PeerIdentity * peer)
{
- struct Session * session = search_session(plugin, addr);
+ struct MacEndpoint * mac;
+ mac = get_macendpoint(plugin, addr, GNUNET_YES);
+ struct Session * session = search_session(plugin, mac, peer);
+
if (session != NULL)
- {
- return session;
- }
- // new session
- return create_session(plugin, addr);
-
- /* -- not needed, layer above already has it--
- //queue welcome message for new sessions, not realy needed
- //struct WelcomeMessage welcome;
- struct PendingMessage *pm;
- pm = GNUNET_malloc (sizeof (struct PendingMessage));
- pm->msg = GNUNET_malloc(GNUNET_HELLO_size(* (plugin->env->our_hello)));
- pm->message_size = GNUNET_HELLO_size(* (plugin->env->our_hello));
- //welcome.header.size = htons (GNUNET_HELLO_size(* (plugin->env->our_hello)));
- //welcome.header.type = htons (GNUNET_MESSAGE_TYPE_WLAN_ADVERTISEMENT);
- //welcome.clientIdentity = *plugin->env->my_identity;
- memcpy ( (pm->msg), * plugin->env->our_hello, GNUNET_HELLO_size(* (plugin->env->our_hello)));
- pm->timeout = GNUNET_TIME_UNIT_FOREVER_ABS;
- queue->content->pending_message = pm;
- plugin->pendingsessions ++;
- GNUNET_CONTAINER_DLL_insert_tail(plugin->pending_Sessions, plugin->pending_Sessions_tail, queue);
-
- check_fragment_queue(plugin);
- */
+ return session;
+ return create_session(plugin, mac, peer);
}
/**
* Queue the session to send data
+ * checks if there is a message pending
+ * checks if this session is not allready in the queue
+ * @param plugin pointer to the plugin
+ * @param session pointer to the session to add
*/
-//TODO doxigen
static void
-queue_Session(struct Plugin *plugin, struct Session * session)
+queue_session(struct Plugin *plugin, struct Session * session)
{
- struct Sessionqueue * queue = plugin->pending_Sessions;
- struct Sessionqueue * lastitem = NULL;
+ struct Sessionqueue * queue = plugin->pending_Sessions_head;
- while (queue != NULL)
+ if (session->pending_message_head != NULL)
{
- // content is never NULL
- GNUNET_assert (queue->content != NULL);
- // is session already in queue?
- if (session == queue->content)
+ while (queue != NULL)
{
- return;
+ // content is never NULL
+ GNUNET_assert (queue->content != NULL);
+ // is session already in queue?
+ if (session == queue->content)
+ {
+ return;
+ }
+ // try next
+ queue = queue->next;
}
- // try next
- lastitem = queue;
- queue = queue->next;
- }
- // Session is not in the queue
+ // Session is not in the queue
- queue = GNUNET_malloc (sizeof (struct Sessionqueue));
- queue->content = session;
+ queue = GNUNET_malloc (sizeof (struct Sessionqueue));
+ queue->content = session;
- //insert at the tail
- GNUNET_CONTAINER_DLL_insert_after (plugin->pending_Sessions,
- plugin->pending_Sessions_tail,
- plugin->pending_Sessions_tail, queue);
- plugin->pendingsessions++;
+ //insert at the tail
+ GNUNET_CONTAINER_DLL_insert_tail(plugin->pending_Sessions_head,
+ plugin->pending_Sessions_tail, queue);
+ plugin->pendingsessions++;
+ }
}
-//TODO doxigen
/**
* Function to schedule the write task, executed after a delay
+ * @param cls pointer to the plugin struct
+ * @param tc GNUNET_SCHEDULER_TaskContext pointer
*/
static void
delay_fragment_task(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
struct Plugin * plugin = cls;
plugin->server_write_delay_task = GNUNET_SCHEDULER_NO_TASK;
- if (tc->reason == GNUNET_SCHEDULER_REASON_SHUTDOWN)
+ if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
return;
// GNUNET_TIME_UNIT_FOREVER_REL is needed to clean up old msg
}
}
-//TODO doxigen
/**
* Function to calculate the time of the next periodic "hello-beacon"
+ * @param plugin pointer to the plugin struct
*/
+
static void
set_next_beacon_time(struct Plugin * const plugin)
{
//under 10 known peers: once a second
- if (plugin->session_count < 10)
+ if (plugin->mac_count < 10)
{
plugin->beacon_time = GNUNET_TIME_absolute_add(
- GNUNET_TIME_absolute_get(), GNUNET_TIME_relative_multiply(
- GNUNET_TIME_UNIT_SECONDS, HALLO_BEACON_SCALING_FACTOR));
+ GNUNET_TIME_absolute_get(),
+ GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS,
+ HALLO_BEACON_SCALING_FACTOR));
}
//under 30 known peers: every 10 seconds
- else if (plugin->session_count < 30)
+ else if (plugin->mac_count < 30)
{
plugin->beacon_time = GNUNET_TIME_absolute_add(
- GNUNET_TIME_absolute_get(), GNUNET_TIME_relative_multiply(
- GNUNET_TIME_UNIT_SECONDS, 10 * HALLO_BEACON_SCALING_FACTOR));
+ GNUNET_TIME_absolute_get(),
+ GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS,
+ 10 * HALLO_BEACON_SCALING_FACTOR));
}
//over 30 known peers: once a minute
else
{
plugin->beacon_time = GNUNET_TIME_absolute_add(
- GNUNET_TIME_absolute_get(), GNUNET_TIME_relative_multiply(
- GNUNET_TIME_UNIT_MINUTES, HALLO_BEACON_SCALING_FACTOR));
+ GNUNET_TIME_absolute_get(),
+ GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_MINUTES,
+ HALLO_BEACON_SCALING_FACTOR));
}
}
-//TODO doxigen
-struct GNUNET_TIME_Relative
-get_next_frag_timeout(struct FragmentMessage * fm)
-{
- return GNUNET_TIME_relative_min(GNUNET_TIME_absolute_get_remaining(
- fm->next_ack), GNUNET_TIME_absolute_get_remaining(fm->timeout));
-}
-
-//TODO doxigen
-/**
- * Function to get the timeout value for acks for this session
- */
-
-struct GNUNET_TIME_Relative
-get_ack_timeout(struct FragmentMessage * fm)
-{
- return FRAGMENT_TIMEOUT;
-}
-
/**
* Function to set the timer for the next timeout of the fragment queue
* @param plugin the handle to the plugin struct
*/
+
static void
-check_next_fragment_timeout(struct Plugin * const plugin)
+set_next_send(struct Plugin * const plugin)
{
- struct FragmentMessage * fm;
struct GNUNET_TIME_Relative next_send;
- next_send = GNUNET_TIME_absolute_get_remaining(plugin->beacon_time);
-
//cancel old task
if (plugin->server_write_delay_task != GNUNET_SCHEDULER_NO_TASK)
{
GNUNET_SCHEDULER_cancel(plugin->server_write_delay_task);
plugin->server_write_delay_task = GNUNET_SCHEDULER_NO_TASK;
}
- fm = plugin->pending_Fragment_Messages_head;
-
- GNUNET_assert(plugin->server_write_delay_task == GNUNET_SCHEDULER_NO_TASK);
//check if some acks are in the queue
if (plugin->ack_send_queue_head != NULL)
{
- next_send = GNUNET_TIME_relative_get_zero();
+ next_send = GNUNET_TIME_UNIT_ZERO;
}
+
//check if there are some fragments in the queue
- else if (fm != NULL)
+ else if (plugin->sending_messages_head != NULL)
+ {
+ next_send = GNUNET_TIME_UNIT_ZERO;
+ }
+ else
+ {
+ next_send = GNUNET_TIME_absolute_get_remaining(plugin->beacon_time);
+ }
+
+#if DEBUG_wlan
+
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Next packet is send in: %u\n",
+ next_send.rel_value);
+
+#endif
+
+ if (next_send.rel_value == GNUNET_TIME_UNIT_ZERO.rel_value)
+ {
+ if (plugin->server_write_task == GNUNET_SCHEDULER_NO_TASK)
+ {
+ plugin->server_write_task = GNUNET_SCHEDULER_add_write_file(
+ GNUNET_TIME_UNIT_FOREVER_REL, plugin->server_stdin_handle,
+ &do_transmit, plugin);
+ }
+ }
+ else
{
- next_send
- = GNUNET_TIME_relative_min(next_send, get_next_frag_timeout(fm));
+ if (plugin->server_write_delay_task == GNUNET_SCHEDULER_NO_TASK)
+ {
+ plugin->server_write_delay_task = GNUNET_SCHEDULER_add_delayed(
+ next_send, &delay_fragment_task, plugin);
+ }
}
- plugin->server_write_delay_task = GNUNET_SCHEDULER_add_delayed(next_send,
- &delay_fragment_task, plugin);
}
-//TODO doxigen
/**
* Function to get the next queued Session, removes the session from the queue
+ * @param plugin pointer to the plugin struct
+ * @return pointer to the session found, returns NULL if there is now session in the queue
*/
-
static struct Session *
-get_next_queue_Session(struct Plugin * plugin)
+get_next_queue_session(struct Plugin * plugin)
{
struct Session * session;
struct Sessionqueue * sessionqueue;
struct Sessionqueue * sessionqueue_alt;
struct PendingMessage * pm;
- sessionqueue = plugin->pending_Sessions;
+ sessionqueue = plugin->pending_Sessions_head;
+
while (sessionqueue != NULL)
{
session = sessionqueue->content;
- pm = session->pending_message;
- if (pm == NULL){
+ GNUNET_assert(session != NULL);
+ pm = session->pending_message_head;
+
#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
- "pending message is empty, should not happen. session %p\n", session);
+ if (pm == NULL)
+ {
+ GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
+ "pending message is empty, should not happen. session %p\n",
+ session);
+ }
#endif
- }
+
GNUNET_assert(pm != NULL);
//check for message timeout
if (GNUNET_TIME_absolute_get_remaining(pm->timeout).rel_value > 0)
{
//check if session has no message in the fragment queue
- if (session->fragment_messages_out_count
- < FRAGMENT_QUEUE_MESSAGES_OUT_PER_SESSION)
+ if ((session->mac->fragment_messages_out_count
+ < FRAGMENT_QUEUE_MESSAGES_OUT_PER_MACENDPOINT)
+ && (session->fragment_messages_out_count
+ < FRAGMENT_QUEUE_MESSAGES_OUT_PER_SESSION))
{
plugin->pendingsessions--;
- GNUNET_CONTAINER_DLL_remove (plugin->pending_Sessions,
+ GNUNET_CONTAINER_DLL_remove (plugin->pending_Sessions_head,
plugin->pending_Sessions_tail, sessionqueue);
GNUNET_free(sessionqueue);
}
else
{
-
- session->pending_message = session->pending_message2;
- session->pending_message2 = NULL;
+ GNUNET_CONTAINER_DLL_remove(session->pending_message_head, session->pending_message_tail, pm);
//call the cont func that it did not work
if (pm->transmit_cont != NULL)
GNUNET_free(pm->msg);
GNUNET_free(pm);
- if (session->pending_message == NULL)
+ if (session->pending_message_head == NULL)
{
sessionqueue_alt = sessionqueue;
sessionqueue = sessionqueue->next;
plugin->pendingsessions--;
- GNUNET_CONTAINER_DLL_remove (plugin->pending_Sessions,
+ GNUNET_CONTAINER_DLL_remove (plugin->pending_Sessions_head,
plugin->pending_Sessions_tail, sessionqueue_alt);
GNUNET_free(sessionqueue_alt);
}
-
}
}
return NULL;
}
-/**
- * Function to sort the message into the message fragment queue
- * @param plugin the plugin struct
- * @param fm message to sort into the queue
- */
-static void
-sort_fragment_into_queue(struct Plugin * plugin, struct FragmentMessage * fm)
-{
- struct FragmentMessage * fm2;
- //sort into the list at the right position
-
- fm2 = plugin->pending_Fragment_Messages_head;
-
- while (fm2 != NULL)
- {
- if (GNUNET_TIME_absolute_get_difference(fm2->next_ack, fm->next_ack).rel_value
- == 0)
- {
- break;
- }
- else
- {
- fm2 = fm2->next;
- }
- }
-
- GNUNET_CONTAINER_DLL_insert_after(plugin->pending_Fragment_Messages_head,
- plugin->pending_Fragment_Messages_tail,fm2,fm);
-}
-
/**
* frees the space of a message in the fragment queue (send queue)
* @param plugin the plugin struct
static void
free_fragment_message(struct Plugin * plugin, struct FragmentMessage * fm)
{
+ struct Session * session = fm->session;
+ struct MacEndpoint * endpoint = session->mac;
+ struct FragmentMessage_queue * fmq;
+ struct FragmentMessage_queue * fmq_next;
+
if (fm != NULL)
{
- (fm->session->fragment_messages_out_count)--;
- GNUNET_free_non_null(fm->msg);
- GNUNET_CONTAINER_DLL_remove (plugin->pending_Fragment_Messages_head,
- plugin->pending_Fragment_Messages_tail, fm);
+ fmq = plugin->sending_messages_head;
+ while (fmq != NULL)
+ {
+ fmq_next = fmq->next;
+ if (fmq->content == fm)
+ {
+ GNUNET_CONTAINER_DLL_remove(plugin->sending_messages_head,plugin->sending_messages_tail, fmq);
+ GNUNET_free(fmq);
+ }
+ fmq = fmq_next;
+ }
+
+ (session->mac->fragment_messages_out_count)--;
+ session->fragment_messages_out_count--;
+ plugin->pending_Fragment_Messages--;
+ GNUNET_CONTAINER_DLL_remove(endpoint->sending_messages_head,endpoint->sending_messages_tail, fm);
+ GNUNET_FRAGMENT_context_destroy(fm->fragcontext);
GNUNET_free(fm);
- plugin->pending_fragment_messages--;
+ queue_session(plugin, session);
#if DEBUG_wlan
GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "free pending fragment messages, pending messages remaining %u\n",
- plugin->pending_fragment_messages);
+ "Free pending fragment messages %p, session %p\n", fm, session);
#endif
}
}
/**
- * Function to check if there is some space in the fragment queue
- * inserts a message if space is available
- * @param plugin the plugin struct
+ * function to fill the radiotap header
+ * @param plugin pointer to the plugin struct
+ * @param endpoint pointer to the endpoint
+ * @param header pointer to the radiotap header
+ * @return GNUNET_YES at success
*/
-
-static void
-check_fragment_queue(struct Plugin * plugin)
+static int
+getRadiotapHeader(struct Plugin * plugin, struct MacEndpoint * endpoint,
+ struct Radiotap_Send * header)
{
- struct Session * session;
- struct FragmentMessage * fm;
- struct GNUNET_PeerIdentity pid;
- struct PendingMessage * pm;
-
- if (plugin->pending_fragment_messages < FRAGMENT_QUEUE_SIZE)
+ if (endpoint != NULL)
{
- session = get_next_queue_Session(plugin);
- if (session != NULL)
- {
- pm = session->pending_message;
- session->pending_message = NULL;
- session->fragment_messages_out_count++;
- GNUNET_assert(pm != NULL);
+ header->rate = endpoint->rate;
+ header->tx_power = endpoint->tx_power;
+ header->antenna = endpoint->antenna;
+ }
+ else
+ {
+ header->rate = 255;
+ header->tx_power = 0;
+ header->antenna = 0;
+ }
- fm = GNUNET_malloc(sizeof(struct FragmentMessage));
- fm->message_size = pm->message_size;
- fm->msg = pm->msg;
- fm->session = session;
- fm->timeout.abs_value = pm->timeout.abs_value;
- fm->message_pos = 0;
- fm->next_ack = GNUNET_TIME_absolute_get();
- fm->message_id_out = get_next_message_id();
- fm->ack_bitfield = 0;
+ return GNUNET_YES;
+}
- sort_fragment_into_queue(plugin, fm);
- plugin->pending_fragment_messages++;
+/**
+ * function to generate the wlan hardware header for one packet
+ * @param Header address to write the header to
+ * @param to_mac_addr address of the recipient
+ * @param plugin pointer to the plugin struct
+ * @return GNUNET_YES if there was no error
+ */
+static int
+getWlanHeader(struct ieee80211_frame * Header,
+ const struct MacAddress * to_mac_addr, struct Plugin * plugin,
+ unsigned int size)
+{
+ uint16_t * tmp16;
+ const int rate = 11000000;
+
+ Header->i_fc[0] = IEEE80211_FC0_TYPE_DATA;
+ Header->i_fc[1] = 0x00;
+ memcpy(&Header->i_addr3, &mac_bssid, sizeof(mac_bssid));
+ memcpy(&Header->i_addr2, plugin->mac_address.mac, sizeof(plugin->mac_address));
+ memcpy(&Header->i_addr1, to_mac_addr, sizeof(struct MacAddress));
+
+ tmp16 = (uint16_t*) Header->i_dur;
+ *tmp16 = (uint16_t) htole16((size * 1000000) / rate + 290);
+
+#if DEBUG_wlan_ip_udp_packets_on_air
+ uint crc = 0;
+ uint16_t * x;
+ int count;
+ Header->ip.ip_dst.s_addr = *((uint32_t*) &to_mac_addr->mac[2]);
+ Header->ip.ip_src.s_addr = *((uint32_t*) &plugin->mac_address.mac[2]);
+ Header->ip.ip_v = 4;
+ Header->ip.ip_hl = 5;
+ Header->ip.ip_p = 17;
+ Header->ip.ip_ttl = 1;
+ Header->ip.ip_len = htons(size + 8);
+ Header->ip.ip_sum = 0;
+ x =(uint16_t *) &Header->ip;
+ count = sizeof(struct iph);
+ while (count > 1)
+ {
+ /* This is the inner loop */
+ crc += (unsigned short) * x++;
+ count -= 2;
+ }
+ /* Add left-over byte, if any */
+ if( count > 0 )
+ crc += * (unsigned char *) x;
+ crc = (crc & 0xffff) + (crc >> 16);
+ Header->ip.ip_sum = htons(~ (unsigned short) crc);
+ Header->llc[0] = 6;
+ Header->llc[1] = 6;
+ Header->udp.len = htons(size - sizeof(struct ieee80211_frame));
- if (pm->transmit_cont != NULL)
- {
- pid = session->target;
- pm->transmit_cont(pm->transmit_cont_cls, &pid, GNUNET_OK);
-#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "called pm->transmit_cont for %p\n", session);
-#endif
- }
- else
- {
-#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "no pm->transmit_cont for %p\n", session);
#endif
- }
- GNUNET_free(pm);
-
- if (session->pending_message2 != NULL){
- session->pending_message = session->pending_message2;
- session->pending_message2 = NULL;
- //requeue session
- queue_Session(plugin, session);
- }
- //check if timeout changed
- check_next_fragment_timeout(plugin);
- }
- }
+ return GNUNET_YES;
}
/**
- * Funktion to check if all fragments where send and the acks received
- * frees the space if finished
- * @param plugin the plugin struct
- * @param fm the message to check
+ * 32bit CRC
+ *
+ * @param msgbuf pointer tor the data
+ * @param msgbuf_size size of the data
+ *
+ * @return 32bit crc value
*/
-static void
-check_finished_fragment(struct Plugin * plugin, struct FragmentMessage * fm)
-{
- //maxack = size of message / max packet size, eg 12 / 5 = 2 start at 0 so ack numbers are 0,1,2
- unsigned int maxack = 63 - ((fm->message_size - 1) / (WLAN_MTU
- - sizeof(struct FragmentationHeader)));
- uint64_t tmpfield = 0xFFFFFFFFFFFFFFFF;
- tmpfield = tmpfield >> maxack;
-
- //#if DEBUG_wlan
- if (maxack != 63)
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "Test bitfields %X and %X, maxack is %u, fm size %u\n",
- fm->ack_bitfield, tmpfield, maxack, fm->message_size);
- //#endif
-
- if (fm->ack_bitfield == tmpfield)
- {
- free_fragment_message(plugin, fm);
+uint32_t
+getcrc32(const char *msgbuf, size_t msgbuf_size)
+{
-#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "Finished sending and got all acks for a fragmented message\n");
-#endif
+ return GNUNET_CRYPTO_crc32_n(msgbuf, msgbuf_size);;
+}
- check_next_fragment_timeout(plugin);
- check_fragment_queue(plugin);
+/**
+ * 16bit CRC
+ *
+ * @param msgbuf pointer tor the data
+ * @param msgbuf_size size of the data
+ *
+ * @return 16bit crc value
+ */
- }
+uint16_t
+getcrc16(const char *msgbuf, size_t msgbuf_size)
+{
+ //TODO calc some crc
+ return 0;
}
/**
- * Function to set the next fragment number
- * @param fm use this FragmentMessage
+ * function to add a fragment of a message to send
+ * @param cls FragmentMessage this message belongs to
+ * @param hdr pointer to the start of the message
*/
void
-set_next_message_fragment_pos(struct FragmentMessage * fm)
+add_message_for_send(void *cls, const struct GNUNET_MessageHeader *hdr)
{
- //check if retransmit is needed
- if (GNUNET_TIME_absolute_get_remaining(fm->next_ack).rel_value == 0)
- {
+ struct FragmentMessage * fm = cls;
+ struct FragmentMessage_queue * fmqueue;
- // be positive and try again later :-D
- fm->next_ack = GNUNET_TIME_relative_to_absolute(get_ack_timeout(fm));
- // find first missing fragment
+ GNUNET_assert(cls != NULL);
+ GNUNET_assert(fm->frag == NULL);
+ struct MacEndpoint * endpoint = fm->session->mac;
+ struct Plugin * plugin = endpoint->plugin;
+ struct GNUNET_MessageHeader * msgheader;
+ struct GNUNET_MessageHeader * msgheader2;
+ uint16_t size;
- fm->message_pos = 0;
- }
+#if DEBUG_wlan_retransmission
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+ "Adding fragment of message %p to send, session %p, endpoint %p\n", fm,
+ fm->session, endpoint);
+#endif
- //test if ack 0 (or X) was already received
- while (testBit((char*) &fm->ack_bitfield, fm->message_pos) == GNUNET_YES)
- {
- fm->message_pos++;
- }
+ size = sizeof(struct GNUNET_MessageHeader) + sizeof(struct Radiotap_Send)
+ + sizeof(struct ieee80211_frame) + ntohs(hdr->size);
+ fm->frag = GNUNET_malloc(size);
+ fm->size = size;
-}
+ msgheader = (struct GNUNET_MessageHeader *) fm->frag;
+ msgheader->size = htons(size);
+ msgheader->type = htons(GNUNET_MESSAGE_TYPE_WLAN_HELPER_DATA);
-void
-send_hello_beacon(struct Plugin * plugin)
-{
+ fm->radioHeader = (struct Radiotap_Send*) &msgheader[1];
+ fm->ieeewlanheader = (struct ieee80211_frame*) &fm->radioHeader[1];
+ msgheader2 = (struct GNUNET_MessageHeader*) &fm->ieeewlanheader[1];
+ memcpy(msgheader2, hdr, ntohs(hdr->size));
-#if DEBUG_wlan
+ fmqueue = GNUNET_malloc(sizeof(struct FragmentMessage_queue));
+ fmqueue->content = fm;
+
+ GNUNET_CONTAINER_DLL_insert_tail(plugin->sending_messages_head,
+ plugin->sending_messages_tail, fmqueue);
+ set_next_send(plugin);
+}
+
+/**
+ * function to send a hallo beacon
+ * @param plugin pointer to the plugin struct
+ */
+static void
+send_hello_beacon(struct Plugin * plugin)
+{
+
+#if DEBUG_wlan
GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Sending hello beacon\n");
#endif
- uint16_t size = 0;
+ uint16_t size;
ssize_t bytes;
- struct GNUNET_MessageHeader * msgheader = NULL;
- struct IeeeHeader * ieeewlanheader = NULL;
- struct RadiotapHeader * radioHeader = NULL;
- struct GNUNET_MessageHeader * msgheader2 = NULL;
-
- GNUNET_assert(sizeof(struct WlanHeader) + GNUNET_HELLO_size(
- *(plugin->env->our_hello)) <= WLAN_MTU);
- size = sizeof(struct GNUNET_MessageHeader) + sizeof(struct RadiotapHeader)
- + sizeof(struct IeeeHeader) + sizeof(struct GNUNET_MessageHeader)
- + GNUNET_HELLO_size(*(plugin->env->our_hello));
+ uint16_t hallo_size;
+ struct GNUNET_MessageHeader * msgheader;
+ struct ieee80211_frame * ieeewlanheader;
+ struct Radiotap_Send * radioHeader;
+ struct GNUNET_MessageHeader * msgheader2;
+
+ hallo_size = GNUNET_HELLO_size(*(plugin->env->our_hello));
+ GNUNET_assert(sizeof(struct WlanHeader) + hallo_size <= WLAN_MTU);
+ size = sizeof(struct GNUNET_MessageHeader) + sizeof(struct Radiotap_Send)
+ + sizeof(struct ieee80211_frame) + sizeof(struct GNUNET_MessageHeader)
+ + hallo_size;
msgheader = GNUNET_malloc(size);
msgheader->size = htons(size);
msgheader->type = htons(GNUNET_MESSAGE_TYPE_WLAN_HELPER_DATA);
- radioHeader = (struct RadiotapHeader*) &msgheader[1];
- getRadiotapHeader(radioHeader);
- ieeewlanheader = (struct IeeeHeader*) &radioHeader[1];
- getWlanHeader(ieeewlanheader, bc_all_mac, plugin);
+ radioHeader = (struct Radiotap_Send*) &msgheader[1];
+ getRadiotapHeader(plugin, NULL, radioHeader);
+ ieeewlanheader = (struct ieee80211_frame*) &radioHeader[1];
+ getWlanHeader(ieeewlanheader, &bc_all_mac, plugin, size);
msgheader2 = (struct GNUNET_MessageHeader*) &ieeewlanheader[1];
- msgheader2->size = htons(GNUNET_HELLO_size(*(plugin->env->our_hello))
- + sizeof(struct GNUNET_MessageHeader));
+ msgheader2->size = htons(
+ GNUNET_HELLO_size(*(plugin->env->our_hello))
+ + sizeof(struct GNUNET_MessageHeader));
msgheader2->type = htons(GNUNET_MESSAGE_TYPE_WLAN_ADVERTISEMENT);
- memcpy(&msgheader2[1], *plugin->env->our_hello, GNUNET_HELLO_size(
- *(plugin->env->our_hello)));
+ memcpy(&msgheader2[1], *plugin->env->our_hello, hallo_size);
bytes = GNUNET_DISK_file_write(plugin->server_stdin_handle, msgheader, size);
GNUNET_free(msgheader);
set_next_beacon_time(plugin);
- check_next_fragment_timeout(plugin);
+ set_next_send(plugin);
}
+/**
+ * function to add an ack to send it for a received fragment
+ * @param cls MacEndpoint this ack belongs to
+ * @param msg_id id of the message
+ * @param hdr pointer to the hdr where the ack is stored
+ *
+ */
+
static void
-send_ack(struct Plugin * plugin, struct AckSendQueue * ack)
+add_ack_for_send(void *cls, uint32_t msg_id,
+ const struct GNUNET_MessageHeader *hdr)
{
- uint16_t size = 0;
- ssize_t bytes;
- struct GNUNET_MessageHeader * msgheader = NULL;
- struct IeeeHeader * ieeewlanheader = NULL;
- struct RadiotapHeader * radioHeader = NULL;
- struct FragmentationAckHeader * msgheader2 = NULL;
+ struct AckSendQueue * ack;
+
+ GNUNET_assert(cls != NULL);
+ struct MacEndpoint * endpoint = cls;
+ struct Plugin * plugin = endpoint->plugin;
+ struct GNUNET_MessageHeader * msgheader;
+ struct GNUNET_MessageHeader * msgheader2;
+ uint16_t size;
- GNUNET_assert(sizeof(struct FragmentationAckHeader) <= WLAN_MTU);
+ size = sizeof(struct GNUNET_MessageHeader) + sizeof(struct Radiotap_Send)
+ + sizeof(struct ieee80211_frame) + ntohs(hdr->size)
+ + sizeof(struct AckSendQueue);
-#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "Sending ack for message_id %u with fragment field %u\n",
- ack->message_id, ack->fragments_field);
-#endif
+ ack = GNUNET_malloc(size);
+ ack->message_id = msg_id;
+ ack->endpoint = endpoint;
- size = sizeof(struct GNUNET_MessageHeader) + sizeof(struct RadiotapHeader)
- + sizeof(struct IeeeHeader) + sizeof(struct FragmentationAckHeader);
- msgheader = GNUNET_malloc(size);
+ size = sizeof(struct GNUNET_MessageHeader) + sizeof(struct Radiotap_Send)
+ + sizeof(struct ieee80211_frame) + ntohs(hdr->size);
+
+ msgheader = (struct GNUNET_MessageHeader *) &ack[1];
+ ack->hdr = (struct GNUNET_MessageHeader *) &ack[1];
msgheader->size = htons(size);
msgheader->type = htons(GNUNET_MESSAGE_TYPE_WLAN_HELPER_DATA);
- radioHeader = (struct RadiotapHeader*) &msgheader[1];
- getRadiotapHeader(radioHeader);
- ieeewlanheader = (struct IeeeHeader*) &radioHeader[1];
- getWlanHeader(ieeewlanheader, ack->session->addr, plugin);
+ ack->radioHeader = (struct Radiotap_Send*) &msgheader[1];
+ ack->ieeewlanheader = (struct ieee80211_frame*) &(ack->radioHeader)[1];
+ msgheader2 = (struct GNUNET_MessageHeader*) &(ack->ieeewlanheader)[1];
+ memcpy(msgheader2, hdr, ntohs(hdr->size));
+
+ GNUNET_CONTAINER_DLL_insert_tail(plugin->ack_send_queue_head,
+ plugin->ack_send_queue_tail, ack);
+
+#if DEBUG_wlan_retransmission
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+ "Adding ack with message id %u to send, AckSendQueue %p, endpoint %p\n",
+ msg_id, ack, endpoint);
+#endif
- msgheader2 = (struct FragmentationAckHeader*) &ieeewlanheader[1];
- msgheader2->header.size = htons(sizeof(struct FragmentationAckHeader));
- msgheader2->header.type = htons(GNUNET_MESSAGE_TYPE_WLAN_FRAGMENT_ACK);
- msgheader2->message_id = htonl(ack->message_id);
- msgheader2->fragment_field = htonll(ack->fragments_field);
+ set_next_send(plugin);
+}
- bytes = GNUNET_DISK_file_write(plugin->server_stdin_handle, msgheader, size);
+/**
+ * Function to check if there is some space in the fragment queue
+ * inserts a message if space is available
+ * @param plugin the plugin struct
+ */
+
+static void
+check_fragment_queue(struct Plugin * plugin)
+{
+ struct Session * session;
+ struct FragmentMessage * fm;
+ struct GNUNET_PeerIdentity pid;
+
+ struct PendingMessage * pm;
+
+ if (plugin->pending_Fragment_Messages < FRAGMENT_QUEUE_SIZE)
+ {
+ session = get_next_queue_session(plugin);
+ if (session != NULL)
+ {
+ pm = session->pending_message_head;
+ GNUNET_CONTAINER_DLL_remove(session->pending_message_head, session->pending_message_tail, pm);
+ session->mac->fragment_messages_out_count++;
+ session->fragment_messages_out_count++;
+ plugin->pending_Fragment_Messages++;
+ GNUNET_assert(pm != NULL);
+
+ fm = GNUNET_malloc(sizeof(struct FragmentMessage));
+ fm->session = session;
+ fm->timeout.abs_value = pm->timeout.abs_value;
+ fm->frag = NULL;
+ fm->fragcontext = GNUNET_FRAGMENT_context_create(plugin->env->stats,
+ WLAN_MTU, &plugin->tracker, GNUNET_TIME_UNIT_SECONDS,
+ &(pm->msg->header), &add_message_for_send,
+ fm);
+ GNUNET_CONTAINER_DLL_insert_tail(session->mac->sending_messages_head,session->mac->sending_messages_tail,fm);
+
+ if (pm->transmit_cont != NULL)
+ {
+ pid = session->target;
+ pm->transmit_cont(pm->transmit_cont_cls, &pid, GNUNET_OK);
+#if DEBUG_wlan
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+ "called pm->transmit_cont for %p\n", session);
+#endif
+ }
+ else
+ {
+#if DEBUG_wlan
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+ "no pm->transmit_cont for %p\n", session);
+#endif
+ }
+ GNUNET_free(pm);
+
+ if (session->pending_message_head != NULL)
+ {
+ //requeue session
+ queue_session(plugin, session);
+ }
+
+ }
+ }
+
+ //check if timeout changed
+ set_next_send(plugin);
+}
+
+/**
+ * Function to send an ack, does not free the ack
+ * @param plugin pointer to the plugin
+ * @param ack pointer to the ack to send
+ */
+static void
+send_ack(struct Plugin * plugin, struct AckSendQueue * ack)
+{
+
+ ssize_t bytes;
+
+#if DEBUG_wlan
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+ "Sending ack for message_id %u for mac endpoint %p, size %u\n",
+ ack->message_id, ack->endpoint,
+ ntohs(ack->hdr->size) - sizeof(struct Radiotap_Send));
+#endif
+
+ getRadiotapHeader(plugin, ack->endpoint, ack->radioHeader);
+ getWlanHeader(ack->ieeewlanheader, &ack->endpoint->addr, plugin,
+ ntohs(ack->hdr->size));
+
+ bytes = GNUNET_DISK_file_write(plugin->server_stdin_handle, ack->hdr,
+ ntohs(ack->hdr->size));
if (bytes == GNUNET_SYSERR)
{
GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
}
GNUNET_assert(bytes != GNUNET_SYSERR);
- GNUNET_assert(bytes == size);
- GNUNET_free(msgheader);
- check_next_fragment_timeout(plugin);
+ GNUNET_assert(bytes == ntohs(ack->hdr->size));
+ set_next_send(plugin);
+}
+
+/**
+ * function to finish a sending if not all could have been writen befor
+ * @param cls pointer to the Finish_send struct
+ * @param tc TaskContext
+ */
+static void
+finish_sending(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ struct Finish_send * finish = cls;
+ struct Plugin * plugin;
+ ssize_t bytes;
+
+ plugin = finish->plugin;
+ plugin->server_write_task = GNUNET_SCHEDULER_NO_TASK;
+
+ if (0 != (GNUNET_SCHEDULER_REASON_SHUTDOWN & tc->reason))
+ {
+ GNUNET_free (finish->msgstart);
+ GNUNET_free (finish);
+ return;
+ }
+ bytes = GNUNET_DISK_file_write(plugin->server_stdin_handle,
+ finish->msgheader, finish->size);
+ GNUNET_assert (bytes != GNUNET_SYSERR);
+
+ if (bytes != finish->size)
+ {
+ finish->msgheader = finish->msgheader + bytes;
+ finish->size = finish->size - bytes;
+ plugin->server_write_task = GNUNET_SCHEDULER_add_write_file(
+ GNUNET_TIME_UNIT_FOREVER_REL, plugin->server_stdin_handle,
+ &finish_sending, finish);
+ }
+ else
+ {
+ GNUNET_free(finish->msgstart);
+ GNUNET_free(finish);
+ set_next_send(plugin);
+ }
}
/**
* @param cls closure
* @param tc GNUNET_SCHEDULER_TaskContext
*/
-
static void
do_transmit(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
-
struct Plugin * plugin = cls;
- plugin->server_write_task = GNUNET_SCHEDULER_NO_TASK;
- if (tc->reason == GNUNET_SCHEDULER_REASON_SHUTDOWN)
+ plugin->server_write_task = GNUNET_SCHEDULER_NO_TASK;
+ if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
return;
- struct Session * session = NULL;
- struct FragmentMessage * fm = NULL;
- struct IeeeHeader * ieeewlanheader = NULL;
- struct RadiotapHeader * radioHeader = NULL;
- struct GNUNET_MessageHeader * msgheader = NULL;
-
- struct FragmentationHeader fragheader;
- struct FragmentationHeader * fragheaderptr = NULL;
- struct Finish_send * finish = NULL;
+ struct Session * session;
+ struct FragmentMessage * fm;
+ struct Finish_send * finish;
+ struct FragmentMessage_queue * fmq;
struct AckSendQueue * ack;
- uint16_t size = 0;
ssize_t bytes;
- const char * copystart = NULL;
- uint16_t copysize = 0;
- uint copyoffset = 0;
if (plugin->ack_send_queue_head != NULL)
{
if (GNUNET_TIME_absolute_get_remaining(plugin->beacon_time).rel_value == 0)
{
send_hello_beacon(plugin);
-
return;
-
}
- fm = plugin->pending_Fragment_Messages_head;
- if (fm != NULL)
+ if (plugin->sending_messages_head != NULL)
{
+ fmq = plugin->sending_messages_head;
+ fm = fmq->content;
+ GNUNET_CONTAINER_DLL_remove(plugin->sending_messages_head,plugin->sending_messages_tail,fmq);
+ GNUNET_free(fmq);
+
session = fm->session;
GNUNET_assert(session != NULL);
- // test if message timed out
- if (GNUNET_TIME_absolute_get_remaining(fm->timeout).rel_value == 0)
- {
#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "message timeout\n");
+ GNUNET_log(
+ GNUNET_ERROR_TYPE_DEBUG,
+ "Sending GNUNET_MESSAGE_TYPE_WLAN_FRAGMENT for fragment message %p, size: %u\n",
+ fm, fm->size);
#endif
- check_fragment_queue(plugin);
- free_fragment_message(plugin, fm);
+ getRadiotapHeader(plugin, session->mac, fm->radioHeader);
+ getWlanHeader(fm->ieeewlanheader, &(fm->session->mac->addr), plugin,
+ fm->size);
- }
- else
+ bytes = GNUNET_DISK_file_write(plugin->server_stdin_handle, fm->frag,
+ fm->size);
+ if (bytes == GNUNET_SYSERR)
{
+ GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
+ _("Error writing to wlan healper. errno == %d, ERROR: %s\n"),
+ errno, strerror(errno));
- //if (fm->message_size > WLAN_MTU)
- // {
- size += sizeof(struct FragmentationHeader);
-
- set_next_message_fragment_pos(fm);
-
- copyoffset = (WLAN_MTU - sizeof(struct FragmentationHeader))
- * fm->message_pos;
-
-#if DEBUG_wlan
- GNUNET_log(
- GNUNET_ERROR_TYPE_DEBUG,
- "Sending GNUNET_MESSAGE_TYPE_WLAN_FRAGMENT with message_id %u with fragment number %i, size: %u, offset %u, time until timeout %u\n",
- fm->message_id_out, fm->message_pos, copysize
- + sizeof(struct FragmentationHeader), copyoffset,
- GNUNET_TIME_absolute_get_remaining(fm->timeout));
-#endif
-
- fragheader.fragment_off_or_num = htons(fm->message_pos);
- fragheader.message_id = htonl(fm->message_id_out);
- copystart = fm->msg + copyoffset;
- copysize = GNUNET_MIN(fm->message_size - copyoffset,
- WLAN_MTU - sizeof(struct FragmentationHeader));
-
- if (copyoffset >= fm->message_size)
- {
- GNUNET_log(
- GNUNET_ERROR_TYPE_ERROR,
- "offset in message for fragment too large, offset %u, size %u, max size %u, copysize %u, message_pos %u,\n",
- copyoffset, fm->message_size, WLAN_MTU
- - sizeof(struct FragmentationHeader), copysize,
- fm->message_pos);
- }
- GNUNET_assert(copyoffset < fm->message_size);
- //FIXME remove later
- GNUNET_assert(copystart < fm->msg + fm->message_size);
-
- fragheader.header.size = htons(copysize
- + sizeof(struct FragmentationHeader));
- fragheader.header.type = htons(GNUNET_MESSAGE_TYPE_WLAN_FRAGMENT);
-
- /* }
- else
- {
- // there is no need to split
- copystart = fm->msg;
- copysize = fm->message_size;
- }*/
-
- size += copysize;
- size += sizeof(struct RadiotapHeader) + sizeof(struct IeeeHeader)
- + sizeof(struct GNUNET_MessageHeader);
- msgheader = GNUNET_malloc(size);
- msgheader->size = htons(size);
- msgheader->type = htons(GNUNET_MESSAGE_TYPE_WLAN_HELPER_DATA);
-
- radioHeader = (struct RadiotapHeader*) &msgheader[1];
- getRadiotapHeader(radioHeader);
-
- ieeewlanheader = (struct IeeeHeader *) &radioHeader[1];
- getWlanHeader(ieeewlanheader, fm->session->addr, plugin);
-
- //could be faster if content is just send and not copyed before
- //fragmentheader is needed
- //if (fm->message_size > WLAN_MTU)
- // {
- fragheader.message_crc = htons(getcrc16(copystart, copysize));
- memcpy(&ieeewlanheader[1], &fragheader,
- sizeof(struct FragmentationHeader));
- fragheaderptr = (struct FragmentationHeader *) &ieeewlanheader[1];
- memcpy(&fragheaderptr[1], copystart, copysize);
- /* }
- else
- {
- memcpy(&ieeewlanheader[1], copystart, copysize);
- }*/
-
- bytes = GNUNET_DISK_file_write(plugin->server_stdin_handle,
- msgheader, size);
- if (bytes == GNUNET_SYSERR)
- {
- GNUNET_log(
- GNUNET_ERROR_TYPE_ERROR,
- _("Error writing to wlan healper. errno == %d, ERROR: %s\n"),
- errno, strerror(errno));
-
- }
- GNUNET_assert(bytes != GNUNET_SYSERR);
-
- if (bytes != size)
- {
- finish = GNUNET_malloc(sizeof( struct Finish_send));
- finish->plugin = plugin;
- finish->msgheader = (char *) msgheader + bytes;
- finish->size = size - bytes;
- finish->msgstart = msgheader;
-
- GNUNET_assert(plugin->server_write_task == GNUNET_SCHEDULER_NO_TASK);
-
- plugin->server_write_task = GNUNET_SCHEDULER_add_write_file(
- GNUNET_TIME_UNIT_FOREVER_REL, plugin->server_stdin_handle,
- &finish_sending, finish);
-
- }
- else
- {
- GNUNET_assert(bytes == size);
-
- GNUNET_free(msgheader);
- check_next_fragment_timeout(plugin);
- }
-
- //check if this was the last fragment of this message, if true then queue at the end of the list
- if (copysize + copyoffset >= fm->message_size)
- {
- GNUNET_assert(copysize + copyoffset == fm->message_size);
-
- GNUNET_CONTAINER_DLL_remove (plugin->pending_Fragment_Messages_head,
- plugin->pending_Fragment_Messages_tail, fm);
-
- GNUNET_CONTAINER_DLL_insert_tail(plugin->pending_Fragment_Messages_head,
- plugin->pending_Fragment_Messages_tail, fm);
- // if fragments have opimized timeouts
- //sort_fragment_into_queue(plugin,fm);
-
- }
+ }
+ GNUNET_assert(bytes != GNUNET_SYSERR);
+ if (bytes != fm->size)
+ {
+ finish = GNUNET_malloc(sizeof( struct Finish_send));
+ finish->plugin = plugin;
+ finish->msgheader = fm->frag + bytes;
+ finish->size = fm->size - bytes;
+ finish->msgstart = (struct GNUNET_MessageHeader *) fm->frag;
+
+ GNUNET_assert(plugin->server_write_task == GNUNET_SCHEDULER_NO_TASK);
+
+ plugin->server_write_task = GNUNET_SCHEDULER_add_write_file(
+ GNUNET_TIME_UNIT_FOREVER_REL, plugin->server_stdin_handle,
+ &finish_sending, finish);
+ fm->frag = NULL;
+ }
+ else
+ {
+ GNUNET_free(fm->frag);
+ fm->frag = NULL;
+ set_next_send(plugin);
}
+ GNUNET_FRAGMENT_context_transmission_done (fm->fragcontext);
return;
}
+
GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
"do_transmit did nothing, should not happen!\n");
}
-static void
-finish_sending(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+/**
+ * Another peer has suggested an address for this
+ * peer and transport plugin. Check that this could be a valid
+ * address. If so, consider adding it to the list
+ * of addresses.
+ *
+ * @param cls closure
+ * @param addr pointer to the address
+ * @param addrlen length of addr
+ * @return GNUNET_OK if this is a plausible address for this peer
+ * and transport
+ */
+static int
+wlan_plugin_address_suggested(void *cls, const void *addr, size_t addrlen)
{
- struct Finish_send * finish;
- struct Plugin * plugin;
- ssize_t bytes;
-
- finish = cls;
- plugin = finish->plugin;
-
- plugin->server_write_task = GNUNET_SCHEDULER_NO_TASK;
-
- bytes = GNUNET_DISK_file_write(plugin->server_stdin_handle,
- finish->msgheader, finish->size);
- GNUNET_assert(bytes != GNUNET_SYSERR);
+ //struct Plugin *plugin = cls;
- GNUNET_assert(plugin->server_write_task == GNUNET_SCHEDULER_NO_TASK);
- if (bytes != finish->size)
- {
+ /* check if the address is plausible; if so,
+ add it to our list! */
- finish->plugin = plugin;
- finish->msgheader = finish->msgheader + bytes;
- finish->size = finish->size - bytes;
- plugin->server_write_task = GNUNET_SCHEDULER_add_write_file(
- GNUNET_TIME_UNIT_FOREVER_REL, plugin->server_stdin_handle,
- &finish_sending, finish);
- }
- else
+ GNUNET_assert(cls !=NULL);
+ //FIXME mitm is not checked
+ //Mac Address has 6 bytes
+ if (addrlen == 6)
{
- GNUNET_free(finish->msgstart);
- GNUNET_free(finish);
- check_next_fragment_timeout(plugin);
+ /* TODO check for bad addresses like multicast, broadcast, etc */
+ return GNUNET_OK;
}
-}
-
-int
-getRadiotapHeader(struct RadiotapHeader * Header)
-{
- return GNUNET_YES;
-}
-;
-
-/**
- * function to generate the wlan hardware header for one packet
- * @param Header address to write the header to
- * @param to_mac_addr address of the recipient
- * @param plugin pointer to the plugin struct
- * @return GNUNET_YES if there was no error
- */
-
-int
-getWlanHeader(struct IeeeHeader * Header, const char * const to_mac_addr,
- struct Plugin * plugin)
-{
- memcpy(&Header->mac2, macbc, sizeof(macbc));
- memcpy(&Header->mac3, plugin->mac_address.mac, sizeof(plugin->mac_address));
- memcpy(&Header->mac1, to_mac_addr, sizeof(plugin->mac_address));
- return GNUNET_YES;
-}
-
-/**
- * 32bit CRC
- *
- * @param msgbuf pointer tor the data
- * @param msgbuf_size size of the data
- *
- * @return 32bit crc value
- */
-
-uint32_t
-getcrc32(const char *msgbuf, size_t msgbuf_size)
-{
- //TODO calc some crc
- return 0;
-}
-
-/**
- * 16bit CRC
- *
- * @param msgbuf pointer tor the data
- * @param msgbuf_size size of the data
- *
- * @return 16bit crc value
- */
-
-uint16_t
-getcrc16(const char *msgbuf, size_t msgbuf_size)
-{
- //TODO calc some crc
- return 0;
+ return GNUNET_SYSERR;
}
/**
* @param priority how important is the message
* @param msgbuf the message to transmit
* @param msgbuf_size number of bytes in 'msgbuf'
- * @param timeout when should we time out
+ * @param timeout when should we time out
* @param session which session must be used (or NULL for "any")
* @param addr the address to use (can be NULL if the plugin
* is "on its own" (i.e. re-use existing TCP connection))
GNUNET_TRANSPORT_TransmitContinuation cont, void *cont_cls)
{
struct Plugin * plugin = cls;
- struct PendingMessage * newmsg = NULL;
- struct WlanHeader * wlanheader = NULL;
+ struct PendingMessage * newmsg;
+ struct WlanHeader * wlanheader;
//check if msglen > 0
GNUNET_assert(msgbuf_size > 0);
{
if (wlan_plugin_address_suggested(plugin, addr, addrlen) == GNUNET_OK)
{
- session = get_Session(plugin, addr);
+ session = get_session(plugin, addr, target);
}
else
{
}
}
- //TODO target "problem" not solved
- //if (session->target != NULL){
- // GNUNET_assert(session->target == *target);
- //} else {
- session->target = *target;
- //}
-
-
//queue message:
//queue message in session
//test if there is no other message in the "queue"
//FIXME: to many send requests
- //GNUNET_assert (session->pending_message == NULL);
- if (session->pending_message != NULL)
+ if (session->pending_message_head != NULL)
{
- newmsg = session->pending_message;
+ newmsg = session->pending_message_head;
GNUNET_log(
GNUNET_ERROR_TYPE_ERROR,
- "wlan_plugin_send: a pending message is already in the queue for this client\n remaining time to send this message is %u, queued fragment messages %u\n",
+ "wlan_plugin_send: a pending message is already in the queue for this client\n remaining time to send this message is %u, queued fragment messages for this mac connection %u\n",
GNUNET_TIME_absolute_get_remaining(newmsg->timeout).rel_value,
- session->fragment_messages_out_count);
- if (session->pending_message2 != NULL)
- {
- GNUNET_log(
- GNUNET_ERROR_TYPE_ERROR,
- "wlan_plugin_send: two pending messages are already in the queue for this client\n");
- return -1;
- }
+ session->mac->fragment_messages_out_count);
}
newmsg = GNUNET_malloc(sizeof(struct PendingMessage));
- (newmsg->msg) = GNUNET_malloc(msgbuf_size + sizeof(struct WlanHeader));
- wlanheader = (struct WlanHeader *) newmsg->msg;
+ newmsg->msg = GNUNET_malloc(msgbuf_size + sizeof(struct WlanHeader));
+ wlanheader = newmsg->msg;
//copy msg to buffer, not fragmented / segmented yet, but with message header
wlanheader->header.size = htons(msgbuf_size + sizeof(struct WlanHeader));
wlanheader->header.type = htons(GNUNET_MESSAGE_TYPE_WLAN_DATA);
memcpy(&(wlanheader->target), target, sizeof(struct GNUNET_PeerIdentity));
- wlanheader->crc = htonl(getcrc32(msgbuf, msgbuf_size));
+ memcpy(&(wlanheader->source), plugin->env->my_identity,
+ sizeof(struct GNUNET_PeerIdentity));
+ wlanheader->crc = 0;
memcpy(&wlanheader[1], msgbuf, msgbuf_size);
+ wlanheader->crc = htonl(
+ getcrc32((char*) wlanheader, msgbuf_size + sizeof(struct WlanHeader)));
+ //GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Wlan message Header crc: %u, %u\n",getcrc32((char*) wlanheader, msgbuf_size + sizeof(struct WlanHeader)), wlanheader->crc);
+ //hexdump(newmsg->msg, msgbuf_size + sizeof(struct WlanHeader));
+
newmsg->transmit_cont = cont;
newmsg->transmit_cont_cls = cont_cls;
newmsg->timeout = GNUNET_TIME_relative_to_absolute(timeout);
newmsg->message_size = msgbuf_size + sizeof(struct WlanHeader);
- if (session->pending_message == NULL)
- {
- session->pending_message = newmsg;
- }
- else
- {
- session->pending_message2 = newmsg;
- }
+ GNUNET_CONTAINER_DLL_insert_tail(session->pending_message_head, session->pending_message_tail, newmsg);
#if DEBUG_wlan
GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
newmsg->message_size);
#endif
-
//queue session
- queue_Session(plugin, session);
+ queue_session(plugin, session);
check_fragment_queue(plugin);
//FIXME not the correct size
}
/**
- * function to get the first message in the fragement queue (out) of a session
- * @param session pointer to the session
- * @return pointer to the struct FragmentMessage
+ * function to free a mac endpoint
+ * @param plugin pointer to the plugin struct
+ * @param endpoin pointer to the MacEndpoint to free
*/
-static struct FragmentMessage *
-get_fragment_message_from_session(struct Session * session)
+static void
+free_macendpoint(struct Plugin * plugin, struct MacEndpoint * endpoin)
{
- struct FragmentMessage * fm = session->plugin->pending_Fragment_Messages_head;
- while (fm != NULL)
+ struct Sessionqueue * sessions;
+ struct Sessionqueue * sessions_next;
+ GNUNET_assert(endpoin != NULL);
+
+ sessions = endpoin->sessions_head;
+ while (sessions != NULL)
{
- if (fm->session == session)
- {
- return fm;
- }
- fm = fm->next;
+ sessions_next = sessions->next;
+ free_session(plugin, sessions, GNUNET_NO);
+ sessions = sessions_next;
}
- return NULL;
+
+ GNUNET_CONTAINER_DLL_remove(plugin->mac_head,plugin->mac_tail,endpoin);
+ GNUNET_free(endpoin);
+
}
/**
- * function to get the message in the fragement queue (out) of a session with a specific id
- * @param session pointer to the session
- * @param message_id id of the message
- * @return pointer to the struct FragmentMessage
- */
-static struct FragmentMessage *
-get_fragment_message_from_session_and_id(struct Session * session,
- uint32_t message_id)
+ * function to free a session
+ * @param plugin pointer to the plugin
+ * @param queue pointer to the sessionqueue element to free
+ * @param free_macendpoint if GNUNET_YES and mac endpoint would be empty, free mac endpoint
+ */
+static void
+free_session(struct Plugin * plugin, struct Sessionqueue * queue,
+ int do_free_macendpoint)
{
- struct FragmentMessage * fm = session->plugin->pending_Fragment_Messages_head;
+ struct Sessionqueue * pendingsession;
+ struct Sessionqueue * pendingsession_tmp;
+ struct PendingMessage * pm;
+ struct MacEndpoint * endpoint;
+ struct FragmentMessage * fm;
+ struct FragmentMessage * fmnext;
+ int check = 0;
+
+ GNUNET_assert(queue != NULL);
+ GNUNET_assert(queue->content != NULL);
+
+ //session found
+ //is this session pending for send
+ pendingsession = plugin->pending_Sessions_head;
+ while (pendingsession != NULL)
+ {
+ pendingsession_tmp = pendingsession->next;
+ if (pendingsession->content == queue->content)
+ {
+ plugin->pendingsessions--;
+ GNUNET_CONTAINER_DLL_remove (plugin->pending_Sessions_head,
+ plugin->pending_Sessions_tail,
+ pendingsession);
+ GNUNET_free(pendingsession);
+
+ GNUNET_assert (check == 0);
+ check = 1;
+ }
+ pendingsession = pendingsession_tmp;
+ }
+
+ endpoint = queue->content->mac;
+ fm = endpoint->sending_messages_head;
while (fm != NULL)
{
- if ((fm->session == session) && (fm->message_id_out == message_id))
+ fmnext = fm->next;
+ if (fm->session == queue->content)
{
- return fm;
+ free_fragment_message(plugin, fm);
}
- fm = fm->next;
+ fm = fmnext;
}
- return NULL;
+
+ // remove PendingMessage
+ pm = queue->content->pending_message_head;
+ while (pm != NULL)
+ {
+ GNUNET_CONTAINER_DLL_remove(queue->content->pending_message_head,queue->content->pending_message_tail,pm);
+ GNUNET_free(pm->msg);
+ GNUNET_free(pm);
+ pm = queue->content->pending_message_head;
+ }
+
+ GNUNET_CONTAINER_DLL_remove(endpoint->sessions_head ,
+ endpoint->sessions_tail,
+ queue);
+
+ if (endpoint->sessions_head == NULL && do_free_macendpoint == GNUNET_YES)
+ {
+ free_macendpoint(plugin, endpoint);
+ }
+ GNUNET_free(queue->content);
+ GNUNET_free(queue);
+ check_fragment_queue(plugin);
}
/**
wlan_plugin_disconnect(void *cls, const struct GNUNET_PeerIdentity *target)
{
struct Plugin *plugin = cls;
- struct Sessionqueue * queue = plugin->sessions;
- struct Sessionqueue * pendingsession = plugin->pending_Sessions;
- struct PendingMessage * pm = NULL;
- struct FragmentMessage * fm;
- struct Receive_Message_Queue * receive_queue;
-
+ struct Sessionqueue * queue;
+ struct Sessionqueue * queue_next;
+ struct MacEndpoint * endpoint = plugin->mac_head;
+ struct MacEndpoint * endpoint_next;
// just look at all the session for the needed one
- while (queue != NULL)
+ while (endpoint != NULL)
{
- // content is never NULL
- GNUNET_assert (queue->content != NULL);
- if (memcmp(target, &(queue->content->target),
- sizeof(struct GNUNET_PeerIdentity)) == 0)
+ queue = endpoint->sessions_head;
+ endpoint_next = endpoint->next;
+ while (queue != NULL)
{
- //session found
- //is this session pending for send
- while (pendingsession != NULL)
- {
- if (pendingsession->content == queue->content)
- {
- plugin->pendingsessions--;
- GNUNET_CONTAINER_DLL_remove (plugin->pending_Sessions,
- plugin->pending_Sessions_tail, pendingsession);
- GNUNET_free(pendingsession);
- break;
- }
- pendingsession = pendingsession->next;
- }
-
- //is something of this session in the fragment queue?
- fm = get_fragment_message_from_session(queue->content);
- while (fm != NULL)
- {
- free_fragment_message(plugin, fm);
- fm = get_fragment_message_from_session(queue->content);
- }
- check_next_fragment_timeout(plugin);
-
- //dispose all received fragments
- receive_queue = get_receive_message_from_session(plugin,
- queue->content);
- while (receive_queue != NULL)
+ // content is never NULL
+ GNUNET_assert (queue->content != NULL);
+ queue_next = queue->next;
+ if (memcmp(target, &(queue->content->target),
+ sizeof(struct GNUNET_PeerIdentity)) == 0)
{
- free_receive_message(plugin, receive_queue);
- receive_queue = get_receive_message_from_session(plugin,
- queue->content);
+ free_session(plugin, queue, GNUNET_YES);
}
-
- // remove PendingMessage
- pm = queue->content->pending_message;
- if (pm != NULL)
- {
- GNUNET_free_non_null(pm->msg);
- GNUNET_free(pm);
- }
-
- GNUNET_free(queue->content);
- GNUNET_CONTAINER_DLL_remove(plugin->sessions, plugin->sessions_tail, queue);
- GNUNET_free(queue);
- plugin->session_count--;
-
- return;
+ // try next
+ queue = queue_next;
}
- // try next
- queue = queue->next;
+ endpoint = endpoint_next;
}
}
//GNUNET_assert(cls !=NULL);
if (addrlen != 6)
{
- /* invalid address (MAC addresses have 6 bytes) */
- GNUNET_break (0);
+ /* invalid address (MAC addresses have 6 bytes) */GNUNET_break (0);
asc(asc_cls, NULL);
return;
}
asc(asc_cls, ret);
}
-/**
- * Another peer has suggested an address for this
- * peer and transport plugin. Check that this could be a valid
- * address. If so, consider adding it to the list
- * of addresses.
- *
- * @param cls closure
- * @param addr pointer to the address
- * @param addrlen length of addr
- * @return GNUNET_OK if this is a plausible address for this peer
- * and transport
- */
-
-static int
-wlan_plugin_address_suggested(void *cls, const void *addr, size_t addrlen)
-{
- //struct Plugin *plugin = cls;
-
- /* check if the address is plausible; if so,
- add it to our list! */
-
- GNUNET_assert(cls !=NULL);
- //FIXME mitm is not checked
- //Mac Address has 6 bytes
- if (addrlen == 6)
- {
- /* TODO check for bad addresses like multicast, broadcast, etc */
- return GNUNET_OK;
- }
- else
- {
- return GNUNET_SYSERR;
- }
-
- return GNUNET_SYSERR;
-}
-
-/**
- * Function called for a quick conversion of the binary address to
- * a numeric address. Note that the caller must not free the
- * address and that the next call to this function is allowed
- * to override the address again.
- *
- * @param cls closure
- * @param addr binary address
- * @param addrlen length of the address
- * @return string representing the same address
- */
-static const char*
-wlan_plugin_address_to_string(void *cls, const void *addr, size_t addrlen)
-{
- static char ret[40];
- const unsigned char * input;
-
- //GNUNET_assert(cls !=NULL);
- if (addrlen != 6)
- {
- /* invalid address (MAC addresses have 6 bytes) */
- GNUNET_break (0);
- return NULL;
- }
- input = (const unsigned char*) addr;
- GNUNET_snprintf(ret, sizeof(ret),
- "%s Mac-Address %02X:%02X:%02X:%02X:%02X:%02X", PROTOCOL_PREFIX,
- input[0], input[1], input[2], input[3], input[4], input[5]);
- return ret;
-}
-
-/**
- * function to check if bitfield is representation of fragments of the message
- * @param rec_message message to check
- */
-
-void
-check_message_fragment_bitfield(struct Receive_Message_Queue * rec_message)
-{
- uint64_t checkfragments = 0;
- struct Receive_Fragment_Queue * rec_queue = rec_message->frag_head;
-
- while (rec_queue != NULL)
- {
- setBit((char*) &checkfragments, rec_queue->num);
- rec_queue = rec_queue->next;
-
- }
- GNUNET_assert(checkfragments == rec_message->received_fragments);
-}
-
-/**
- * Function to test if fragment number already exists in the fragments received
- *
- * @param rec_message message this fragment belongs to
- * @param fh Fragmentheader of the fragment
- * @return GNUNET_YES if fragment exists already, GNUNET_NO if it does not exists in the queue of the session
- */
-
-static const int
-is_double_msg(struct Receive_Message_Queue * rec_message,
- struct FragmentationHeader * fh)
-{
- //test if bitfield is okay
-#if DEBUG_wlan
- check_message_fragment_bitfield(rec_message);
-#endif
-
- return testBit((char *) &rec_message->received_fragments, ntohs(
- fh->fragment_off_or_num));
-
-}
-
-/**
- * Function to insert a fragment in a queue of a message
- * @param session session the fragment belongs to
- * @param rec_queue fragment to add
- */
-
-static void
-insert_fragment_in_queue(struct Receive_Message_Queue * rec_message,
- struct Receive_Fragment_Queue * rec_queue)
-{
- struct Receive_Fragment_Queue * rec_queue2 = rec_message->frag_head;
- struct WlanHeader * wlanheader = NULL;
-
- GNUNET_assert(rec_message != NULL);
- GNUNET_assert(rec_queue != NULL);
-
- //this is the first fragment of the message (fragment id 0)
- if (rec_queue->num == 0)
- {
- wlanheader = (struct WlanHeader *) rec_queue->msg;
- rec_message->rec_size = ntohs(wlanheader->header.size);
- }
-
- //sort into list
- while (rec_queue2 != NULL)
- {
- if (rec_queue2->num > rec_queue->num)
- {
- //next element number is grater than the current num
- GNUNET_CONTAINER_DLL_insert_before(rec_message->frag_head, rec_message->frag_tail, rec_queue2, rec_queue);
- setBit((char *) &rec_message->received_fragments, rec_queue->num);
- return;
- }
- rec_queue = rec_queue->next;
- }
- //no element has a grater number
- GNUNET_CONTAINER_DLL_insert_tail(rec_message->frag_head, rec_message->frag_tail, rec_queue);
-
- setBit((char *) &rec_message->received_fragments, rec_queue->num);
-}
-
-/**
- * Function to dispose the fragments received for a message and the message
- * @param session session to free the fragments from
- */
-
-static void
-free_receive_message(struct Plugin* plugin,
- struct Receive_Message_Queue * rec_message)
-{
- GNUNET_assert(rec_message !=NULL);
- struct Receive_Fragment_Queue * rec_queue = rec_message->frag_head;
- struct Receive_Fragment_Queue * rec_queue2;
-
- while (rec_queue != NULL)
- {
- rec_queue2 = rec_queue;
- rec_queue = rec_queue->next;
- GNUNET_free(rec_queue2);
- }
-
- GNUNET_CONTAINER_DLL_remove(plugin->receive_messages_head,plugin->receive_messages_teil, rec_message);
-
- GNUNET_assert(plugin->pending_receive_messages > 0);
- GNUNET_assert(rec_message->session->fragment_messages_in_count > 0);
-
- plugin->pending_receive_messages--;
- rec_message->session->fragment_messages_in_count--;
- GNUNET_free(rec_message);
-}
-
-/**
- * Function to check if all fragments of a message have been received
- * @param plugin the plugin handle
- * @param session_light information of the message sender
- * @param session session the message belongs to
- */
-
-static void
-check_rec_finished_msg(struct Plugin* plugin,
- struct Session_light * session_light, struct Session * session,
- struct Receive_Message_Queue * rec_message)
-{
- struct Receive_Fragment_Queue * rec_queue = rec_message->frag_head;
- int packetsize = rec_message->rec_size;
- int sum = 0;
- int aktnum = 0;
- uint64_t bitfield = 0;
- char * msg;
-
- GNUNET_assert(rec_message !=NULL);
- //check if first fragment is present
- if (packetsize == MESSAGE_LENGHT_UNKNOWN)
- {
- return;
- }
-#if DEBUG_wlan
- check_message_fragment_bitfield(rec_message);
-#endif
-
- bitfield = ~bitfield;
- bitfield = bitfield >> (63 - rec_message->frag_tail->num);
- if (rec_message->received_fragments == bitfield)
- {
-
- while (rec_queue != NULL)
- {
- sum += rec_queue->size;
- rec_queue = rec_queue->next;
- }
- //sum should always be smaller or equal of
- GNUNET_assert(sum <= packetsize);
- if (sum == packetsize)
- {
-
-#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "check_rec_finished_msg: A message for %p is complete\n", session);
-#endif
-
- //TODO use mst
- //copy fragments together
- msg = GNUNET_malloc(packetsize);
- rec_queue = rec_message->frag_head;
- aktnum = 0;
- while (rec_queue != NULL)
- {
- //TODO SAVE SOME COPY OPS AND CHECK CRC WITHOUT COPY
- memcpy(msg + aktnum, rec_queue->msg, rec_queue->size);
- aktnum += rec_queue->size;
- rec_queue = rec_queue->next;
- }
- free_receive_message(plugin, rec_message);
- //call wlan_process_helper to process the message
- wlan_data_massage_handler(plugin, session_light,
- (struct GNUNET_MessageHeader*) msg);
- //wlan_data_helper (plugin, session_light, (struct GNUNET_MessageHeader*) msg);
-
- GNUNET_free(msg);
- }
- }
-}
-
-static void
-process_data(void *cls, void *client, const struct GNUNET_MessageHeader *hdr)
-{
-
- GNUNET_assert(client != NULL);
- GNUNET_assert(cls != NULL);
- struct Session * session = (struct Session *) client;
- struct Plugin * plugin = (struct Plugin *) cls;
-
- struct GNUNET_TRANSPORT_ATS_Information distance[2];
- distance[0].type = htonl(GNUNET_TRANSPORT_ATS_QUALITY_NET_DISTANCE);
- distance[0].value = htonl(1);
- distance[1].type = htonl(GNUNET_TRANSPORT_ATS_ARRAY_TERMINATOR);
- distance[1].value = htonl(0);
-
-#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "Calling plugin->env->receive for session %p; %s\n", session,
- wlan_plugin_address_to_string(NULL, session->addr, 6));
-#endif
-
- plugin->env->receive(plugin->env->cls, &(session->target), hdr,
- (const struct GNUNET_TRANSPORT_ATS_Information *) &distance, 2, session,
- session->addr, sizeof(session->addr));
-}
-
/**
* handels the data after all fragments are put together
* @param plugin
* @param hdr pointer to the data
*/
static void
-wlan_data_massage_handler(struct Plugin * plugin,
- struct Session_light * session_light,
- const struct GNUNET_MessageHeader * hdr)
+wlan_data_message_handler(void *cls, const struct GNUNET_MessageHeader *hdr)
{
- struct WlanHeader * wlanheader = NULL;
- struct Session * session = NULL;
- const char * tempmsg = NULL;
- const struct GNUNET_MessageHeader * temp_hdr = NULL;
- struct GNUNET_PeerIdentity tmptarget;
+ struct MacEndpoint * endpoint = (struct MacEndpoint *) cls;
+ struct Plugin * plugin = endpoint->plugin;
+ struct WlanHeader * wlanheader;
+ struct Session * session;
+ //const char * tempmsg;
+ const struct GNUNET_MessageHeader * temp_hdr;
+ struct GNUNET_PeerIdentity tmpsource;
+ int crc;
if (ntohs(hdr->type) == GNUNET_MESSAGE_TYPE_WLAN_DATA)
{
#if DEBUG_wlan
GNUNET_log(
GNUNET_ERROR_TYPE_DEBUG,
- "Func wlan_data_massage_handler got GNUNET_MESSAGE_TYPE_WLAN_DATA size: %u\n",
+ "Func wlan_data_message_handler got GNUNET_MESSAGE_TYPE_WLAN_DATA size: %u\n",
ntohs(hdr->size));
#endif
- GNUNET_assert(session_light != NULL);
- if (session_light->session == NULL)
+ if (ntohs(hdr->size) < sizeof(struct WlanHeader)
+ + sizeof(struct GNUNET_MessageHeader))
{
- session_light->session = search_session(plugin, session_light->addr);
+ //packet not big enought
+ return;
}
- session = session_light->session;
+
wlanheader = (struct WlanHeader *) hdr;
- tempmsg = (char*) &wlanheader[1];
- temp_hdr = (const struct GNUNET_MessageHeader *) &wlanheader[1];
- if (getcrc32(tempmsg, ntohs(wlanheader->header.size)) != ntohl(
- wlanheader->crc))
+ session = search_session(plugin, endpoint, &wlanheader->source);
+
+ //tempmsg = (char*) &wlanheader[1];
+ temp_hdr = (const struct GNUNET_MessageHeader *) &wlanheader[1];
+ crc = ntohl(wlanheader->crc);
+ wlanheader->crc = 0;
+ if (getcrc32((char *) wlanheader, ntohs(wlanheader->header.size)) != crc)
{
//wrong crc, dispose message
GNUNET_log(GNUNET_ERROR_TYPE_INFO,
- "Wlan message Header crc was wrong\n");
+ "Wlan message header crc was wrong: %u != %u\n",
+ getcrc32((char *) wlanheader, ntohs(wlanheader->header.size)),
+ crc);
+ hexdump((void *) hdr, ntohs(hdr->size));
return;
}
{
if (GNUNET_HELLO_get_id(
(const struct GNUNET_HELLO_Message *) temp_hdr,
- &tmptarget) == GNUNET_OK)
+ &tmpsource) == GNUNET_OK)
{
- session = create_session(plugin, session_light->addr);
- session_light->session = session;
- memcpy(&session->target, &tmptarget,
- sizeof(struct GNUNET_PeerIdentity));
+ session = create_session(plugin, endpoint, &tmpsource);
}
else
- {
- GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
- "WLAN client not in session list and hello message not okay\n");
- return;
- }
-
- }
- else
- {
- GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
- "WLAN client not in session list and not a hello message\n");
- return;
- }
- }
- else
- {
- GNUNET_log(
- GNUNET_ERROR_TYPE_WARNING,
- "WLAN client not in session list and message size in does not fit\npacket size = %u, inner size = %u, header size = %u\n",
- ntohs(wlanheader->header.size), ntohs(temp_hdr->size),
- sizeof(struct WlanHeader));
- return;
- }
- }
-
- //"receive" the message
-
-
- GNUNET_SERVER_mst_receive(plugin->data_tokenizer, session,
- (const char *) temp_hdr,
- ntohs(hdr->size) - sizeof(struct WlanHeader), GNUNET_YES, GNUNET_NO);
-
- return;
- }
- else
- {
- GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
- "wlan_data_massage_handler got wrong message type\n");
- return;
- }
-}
-
-/**
- * function to add an ack to send it for a received fragment
- * @param plugin pointer to the global plugin structure
- * @param session pointer to the session this ack belongs to
- * @param fh pointer to the fragmentation header which we would like to acknolage
- */
-
-void
-add_ack_for_send(struct Plugin * plugin, struct Session * session,
- uint64_t bitfield, struct FragmentationHeader * fh)
-{
- struct AckSendQueue * ack;
-
- GNUNET_assert(plugin != NULL);
- GNUNET_assert(session != NULL);
- GNUNET_assert(fh != NULL);
-
- ack = GNUNET_malloc(sizeof(struct AckSendQueue));
- ack->fragments_field = bitfield;
- ack->message_id = ntohl(fh->message_id);
- ack->session = session;
-
- GNUNET_CONTAINER_DLL_insert_tail(plugin->ack_send_queue_head,
- plugin->ack_send_queue_tail, ack);
-
-}
-
-/**
- * function to get the receive message from the message id and the session
- * @param plugin pointer to the plugin struct
- * @param session session this fragment belongs to
- * @param message_id id of the message
- */
-
-struct Receive_Message_Queue *
-get_receive_message(struct Plugin * plugin, struct Session * session,
- uint32_t message_id)
-{
- struct Receive_Message_Queue * rec_message = plugin->receive_messages_head;
- while (rec_message != NULL)
- {
- if ((rec_message->message_id_in == message_id) && (rec_message->session
- == session))
- {
- return rec_message;
- }
- rec_message = rec_message->next;
- }
- return NULL;
-}
-
-/**
- * function to get the receive message of a session
- * @param plugin pointer to the plugin struct
- * @param session session this fragment belongs to
- */
-
-struct Receive_Message_Queue *
-get_receive_message_from_session(struct Plugin * plugin,
- struct Session * session)
-{
- struct Receive_Message_Queue * rec_message = plugin->receive_messages_head;
- while (rec_message != NULL)
- {
- if (rec_message->session == session)
- {
- return rec_message;
- }
- rec_message = rec_message->next;
- }
- return NULL;
-}
-
-/**
- * function to insert a received fragment into the right fragment queue of the right message
- * @param plugin pointer to the plugin struct
- * @param session session this fragment belongs to
- * @param fh pointer to the header of the fragment
- * @return new fragment bitfield for the message
- */
-
-uint64_t
-insert_fragment_in_in_message_queue(struct Plugin * plugin,
- struct Session_light * session_light, struct Session * session,
- struct FragmentationHeader * fh)
-{
- struct Receive_Fragment_Queue * rec_queue = NULL;
- struct Receive_Message_Queue * rec_message;
- const char * tempmsg = (char*) &fh[1];
- uint64_t retval = 0;
+ {
+ GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
+ "WLAN client not in session list and hello message is not okay\n");
+ return;
+ }
- //TODO fragments do not timeout
- //check if message_id is right or it is a new msg
- GNUNET_assert(fh != NULL);
+ }
+ else
+ {
+ GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
+ "WLAN client not in session list and not a hello message\n");
+ return;
+ }
+ }
+ else
+ {
+ GNUNET_log(
+ GNUNET_ERROR_TYPE_WARNING,
+ "WLAN client not in session list and message size in does not fit\npacket size = %u, inner size = %u, header size = %u\n",
+ ntohs(wlanheader->header.size), ntohs(temp_hdr->size),
+ sizeof(struct WlanHeader));
+ return;
+ }
+ }
- rec_message = get_receive_message(plugin, session, ntohs(fh->message_id));
+ //"receive" the message
- if (rec_message == NULL)
- {
- if (session->fragment_messages_in_count < MESSAGES_IN_QUEUE_PER_SESSION)
+ if (memcmp(&wlanheader->source, &session->target,
+ sizeof(struct GNUNET_PeerIdentity)) != 0)
{
-
- //new message incoming
- rec_message = GNUNET_malloc(sizeof (struct Receive_Message_Queue));
- rec_message->message_id_in = ntohs(fh->message_id);
- rec_message->rec_size = MESSAGE_LENGHT_UNKNOWN;
- rec_message->session = session;
- rec_message->timeout = GNUNET_TIME_absolute_add(
- GNUNET_TIME_absolute_get(), MESSAGE_IN_TIMEOUT);
- rec_message->received_fragments = 0;
-
- GNUNET_CONTAINER_DLL_insert(plugin->receive_messages_head, plugin->receive_messages_teil, rec_message);
-
- session->fragment_messages_in_count++;
- plugin->pending_receive_messages++;
-
+ //wrong peer id
#if DEBUG_wlan
GNUNET_log(
GNUNET_ERROR_TYPE_DEBUG,
- "New fragmented message started: message id %u, messages in for this session %u, messages in %u\n",
- rec_message->message_id_in, session->fragment_messages_in_count,
- plugin->pending_receive_messages);
+ "WLAN peer source id doesn't match packet peer source id: session %p\n",
+ session);
#endif
+ return;
}
- else
- {
-
- GNUNET_log(
- GNUNET_ERROR_TYPE_INFO,
- "WLAN fragment message_id and session message_id do not exist, max MESSAGES_IN_QUEUE_PER_SESSION reached\n");
- setBit((char *) &retval, ntohs(fh->fragment_off_or_num));
- return retval;
- }
- }
-
- if (is_double_msg(rec_message, fh) != GNUNET_YES)
- {
-
- //report size
- rec_queue = GNUNET_malloc(sizeof (struct Receive_Fragment_Queue) +
- ntohs(fh->header.size) - sizeof(struct FragmentationHeader));
- rec_queue->size = ntohs(fh->header.size)
- - sizeof(struct FragmentationHeader);
- rec_queue->num = ntohs(fh->fragment_off_or_num);
- rec_queue->msg = (char*) &(rec_queue[1]);
- //copy msg to buffer
- memcpy((char *)rec_queue->msg, tempmsg, rec_queue->size);
- insert_fragment_in_queue(rec_message, rec_queue);
- //save bitfield
- retval = rec_message->received_fragments;
+ if (memcmp(&wlanheader->target, plugin->env->my_identity,
+ sizeof(struct GNUNET_PeerIdentity)) != 0)
+ {
+ //wrong peer id
#if DEBUG_wlan
- GNUNET_log(
- GNUNET_ERROR_TYPE_DEBUG,
- "New fragment: size %u, fragsize %u, message id %u, bitfield %X, session %u\n",
- rec_message->rec_size, rec_queue->size,
- rec_message->received_fragments, rec_message->message_id_in, session);
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+ "WLAN peer target id doesn't match our peer id: session %p\n",
+ session);
#endif
+ return;
+ }
+
+ GNUNET_SERVER_mst_receive(plugin->data_tokenizer, session,
+ (const char *) temp_hdr,
+ ntohs(hdr->size) - sizeof(struct WlanHeader), GNUNET_YES, GNUNET_NO);
- check_rec_finished_msg(plugin, session_light, session, rec_message);
+ return;
}
else
{
- GNUNET_log(GNUNET_ERROR_TYPE_INFO, "WLAN fragment is a clone\n");
- retval = rec_message->received_fragments;
-
+ GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
+ "wlan_data_message_handler got wrong message type\n");
+ return;
}
- return retval;
+}
+
+//TODO DOXIGEN
+static void
+process_data(void *cls, void *client, const struct GNUNET_MessageHeader *hdr)
+{
+
+ GNUNET_assert(client != NULL);
+ GNUNET_assert(cls != NULL);
+ struct Session * session = (struct Session *) client;
+ struct Plugin * plugin = (struct Plugin *) cls;
+
+ struct GNUNET_TRANSPORT_ATS_Information distance[2];
+ distance[0].type = htonl(GNUNET_TRANSPORT_ATS_QUALITY_NET_DISTANCE);
+ distance[0].value = htonl(1);
+ distance[1].type = htonl(GNUNET_TRANSPORT_ATS_ARRAY_TERMINATOR);
+ distance[1].value = htonl(0);
+
+#if DEBUG_wlan
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+ "Calling plugin->env->receive for session %p; %s; size: %u\n", session,
+ wlan_plugin_address_to_string(NULL, session->mac->addr.mac, 6),
+ htons(hdr->size));
+#endif
+ plugin->env->receive(plugin->env->cls, &(session->target), hdr,
+ (const struct GNUNET_TRANSPORT_ATS_Information *) &distance, 2, session,
+ (const char*) &session->mac->addr, sizeof(session->mac->addr));
}
/**
*/
static void
wlan_data_helper(void *cls, struct Session_light * session_light,
- const struct GNUNET_MessageHeader * hdr)
+ const struct GNUNET_MessageHeader * hdr, const struct Radiotap_rx * rxinfo)
{
struct Plugin *plugin = cls;
- struct Session * session = NULL;
-
- struct FragmentationHeader * fh = NULL;
- struct FragmentationAckHeader * fah = NULL;
- struct FragmentMessage * fm = NULL;
-
- const char * tempmsg = NULL;
-
- uint64_t fragment_bitfield = 0;
+ struct FragmentMessage * fm;
+ struct FragmentMessage * fm2;
//ADVERTISEMENT
if (ntohs(hdr->type) == GNUNET_MESSAGE_TYPE_WLAN_ADVERTISEMENT)
GNUNET_log(
GNUNET_ERROR_TYPE_DEBUG,
"Func wlan_data_helper got GNUNET_MESSAGE_TYPE_WLAN_ADVERTISEMENT size: %u; %s\n",
- ntohs(hdr->size), wlan_plugin_address_to_string(NULL,
- session_light->addr, 6));
+ ntohs(hdr->size),
+ wlan_plugin_address_to_string(NULL, session_light->addr.mac, 6));
#endif
- if (session_light->session == NULL)
+ if (session_light->macendpoint == NULL)
{
- session_light->session = get_Session(plugin, session_light->addr);
+ session_light->macendpoint = get_macendpoint(plugin,
+ &session_light->addr, GNUNET_NO);
}
GNUNET_assert(GNUNET_HELLO_get_id(
(const struct GNUNET_HELLO_Message *) &hdr[1],
}
//FRAGMENT
- else if (ntohs(hdr->type) == GNUNET_MESSAGE_TYPE_WLAN_FRAGMENT)
+
+ else if (ntohs(hdr->type) == GNUNET_MESSAGE_TYPE_FRAGMENT)
{
GNUNET_assert(session_light != NULL);
- if (session_light->session == NULL)
+ if (session_light->macendpoint == NULL)
{
- session_light->session = search_session(plugin, session_light->addr);
+ session_light->macendpoint = get_macendpoint(plugin,
+ &session_light->addr, GNUNET_YES);
}
- session = session_light->session;
-
- fh = (struct FragmentationHeader *) hdr;
- tempmsg = (char*) &fh[1];
#if DEBUG_wlan
GNUNET_log(
GNUNET_ERROR_TYPE_DEBUG,
- "Func wlan_data_helper got GNUNET_MESSAGE_TYPE_WLAN_FRAGMENT with message_id %u with fragment number %i, size: %u; %s\n",
- ntohl(fh->message_id), ntohs(fh->fragment_off_or_num), ntohs(
- hdr->size), wlan_plugin_address_to_string(NULL,
- session_light->addr, 6));
+ "Func wlan_data_helper got GNUNET_MESSAGE_TYPE_FRAGMENT with size: %u; mac endpoint %p: %s\n",
+ ntohs(hdr->size), session_light->macendpoint,
+ wlan_plugin_address_to_string(NULL, session_light->addr.mac, 6));
#endif
- if (getcrc16(tempmsg, ntohs(fh->header.size)) != ntohs(fh->message_crc))
- {
- //wrong crc, dispose message
- GNUNET_log(GNUNET_ERROR_TYPE_INFO, "WLAN fragment crc was wrong\n");
- return;
- }
-
- //if in the session list
- if (session != NULL)
+ int ret = GNUNET_DEFRAGMENT_process_fragment(
+ session_light->macendpoint->defrag, hdr);
+ if (ret == GNUNET_NO)
{
- fragment_bitfield = insert_fragment_in_in_message_queue(plugin,
- session_light, session, fh);
+ session_light->macendpoint->dups++;
}
- else
+ else if (ret == GNUNET_OK)
{
- // new session
- GNUNET_log(
- GNUNET_ERROR_TYPE_INFO,
- "WLAN client not in session list, fragment num %u, message id %u\n",
- ntohs(fh->fragment_off_or_num), ntohs(fh->message_id));
- wlan_data_massage_handler(plugin, session_light,
- (struct GNUNET_MessageHeader *) tempmsg);
- session = session_light->session;
- //test if a session was created
- if (session == NULL)
- {
- return;
- }
- setBit((char *) &fragment_bitfield, ntohs(fh->fragment_off_or_num));
+ session_light->macendpoint->fragc++;
}
-
- add_ack_for_send(plugin, session, fragment_bitfield, fh);
- check_next_fragment_timeout(plugin);
+ set_next_send(plugin);
}
//ACK
- else if (ntohs(hdr->type) == GNUNET_MESSAGE_TYPE_WLAN_FRAGMENT_ACK)
+
+ else if (ntohs(hdr->type) == GNUNET_MESSAGE_TYPE_FRAGMENT_ACK)
{
+ GNUNET_assert(session_light != NULL);
+ if (session_light->macendpoint == NULL)
+ {
+ session_light->macendpoint = get_macendpoint(plugin,
+ &session_light->addr, GNUNET_NO);
+ }
+
+ if (session_light->macendpoint == NULL)
+ {
+#if DEBUG_wlan
+ GNUNET_log(
+ GNUNET_ERROR_TYPE_DEBUG,
+ "Macendpoint does not exist for this GNUNET_MESSAGE_TYPE_FRAGMENT_ACK size: %u; %s\n",
+ ntohs(hdr->size),
+ wlan_plugin_address_to_string(NULL, session_light->addr.mac, 6));
+#endif
+ return;
+ }
#if DEBUG_wlan
GNUNET_log(
GNUNET_ERROR_TYPE_DEBUG,
- "Func wlan_data_helper got GNUNET_MESSAGE_TYPE_WLAN_FRAGMENT_ACK size: %u; %s\n",
- ntohs(hdr->size), wlan_plugin_address_to_string(NULL,
- session_light->addr, 6));
+ "Func wlan_data_helper got GNUNET_MESSAGE_TYPE_FRAGMENT_ACK size: %u; mac endpoint: %p; %s\n",
+ ntohs(hdr->size), session_light->macendpoint,
+ wlan_plugin_address_to_string(NULL, session_light->addr.mac, 6));
#endif
-
- GNUNET_assert(session_light != NULL);
- if (session_light->session == NULL)
- {
- session_light->session = search_session(plugin, session_light->addr);
- GNUNET_assert(session_light->session != NULL);
- }
- session = session_light->session;
- fah = (struct FragmentationAckHeader *) hdr;
- fm = get_fragment_message_from_session_and_id(session, ntohl(
- fah->message_id));
- if (fm != NULL)
+ fm = session_light->macendpoint->sending_messages_head;
+ while (fm != NULL)
{
+ fm2 = fm->next;
+ int ret = GNUNET_FRAGMENT_process_ack(fm->fragcontext, hdr);
+ if (ret == GNUNET_OK)
+ {
+#if DEBUG_wlan_retransmission
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+ "Got last ack, finished fragment message %p\n", fm);
+#endif
+ session_light->macendpoint->acks++;
+ free_fragment_message(plugin, fm);
+ check_fragment_queue(plugin);
+ return;
+ }
+ if (ret == GNUNET_NO)
+ {
+#if DEBUG_wlan_retransmission
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Got ack for: %p\n", fm);
+#endif
+ session_light->macendpoint->acks++;
+ return;
+ }
+ if (ret == GNUNET_SYSERR)
+ {
- fm->ack_bitfield = fm->ack_bitfield | ntohll(fah->fragment_field);
- check_finished_fragment(plugin, fm);
- }
- else
- {
- GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
- "WLAN fragment not in fragment list with id %u of ack\n", ntohl(
- fh->message_id));
- return;
+ }
+
+ fm = fm2;
}
+#if DEBUG_wlan_retransmission
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+ "WLAN fragment not in fragment list\n");
+#endif
+ return;
+
}
else
{
// TODO Wrong data?
- GNUNET_log(GNUNET_ERROR_TYPE_INFO,
- "WLAN packet inside the WLAN helper packet has not the right type\n");
+ GNUNET_log(
+ GNUNET_ERROR_TYPE_INFO,
+ "WLAN packet inside the WLAN helper packet has not the right type: %u size: %u\n",
+ ntohs(hdr->type), ntohs(hdr->size));
+ GNUNET_break(0);
return;
}
}
-char *
-macprinter(struct MacAddress macx)
+//TODO DOXIGEN
+const char *
+macprinter(const u_int8_t * mac)
{
static char macstr[20];
- char * mac = macx.mac;
- sprintf(macstr, "%.2X:%.2X:%.2X:%.2X:%.2X:%.2X", mac[0], mac[1], mac[2],
- mac[3], mac[4], mac[5]);
+
+ GNUNET_snprintf(macstr, sizeof(macstr), "%X:%X:%X:%X:%X:%X", mac[0], mac[1],
+ mac[2], mac[3], mac[4], mac[5]);
return macstr;
}
+/**
+ * function to create an macendpoint
+ * @param plugin pointer to the plugin struct
+ * @param addr pointer to the macaddress
+ * @return returns a macendpoint
+ */
+static struct MacEndpoint *
+create_macendpoint(struct Plugin *plugin, const struct MacAddress *addr)
+{
+ struct MacEndpoint * newend = GNUNET_malloc(sizeof (struct MacEndpoint));
+ newend->addr = *addr;
+ newend->plugin = plugin;
+ newend->addr = *addr;
+ newend->fragment_messages_out_count = 0;
+ newend->defrag = GNUNET_DEFRAGMENT_context_create(plugin->env->stats,
+ WLAN_MTU, MESSAGES_IN_DEFRAG_QUEUE_PER_MAC, newend,
+ &wlan_data_message_handler, &add_ack_for_send);
+
+ plugin->mac_count++;
+ GNUNET_CONTAINER_DLL_insert_tail(plugin->mac_head, plugin->mac_tail, newend);
+#if DEBUG_wlan
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "New Mac Endpoint %p: %s\n", newend,
+ wlan_plugin_address_to_string(NULL, newend->addr.mac, 6));
+#endif
+ return newend;
+}
+
/**
* Function used for to process the data from the suid process
*
* @param client client that send the data (not used)
* @param hdr header of the GNUNET_MessageHeader
*/
-
static void
wlan_process_helper(void *cls, void *client,
const struct GNUNET_MessageHeader *hdr)
{
struct Plugin *plugin = cls;
- struct IeeeHeader * wlanIeeeHeader = NULL;
+ struct ieee80211_frame * wlanIeeeHeader = NULL;
struct Session_light * session_light = NULL;
+ struct Radiotap_rx * rxinfo;
const struct GNUNET_MessageHeader * temp_hdr = NULL;
int datasize = 0;
- int pos = 0;
+ int pos;
- if (ntohs(hdr->type) == GNUNET_MESSAGE_TYPE_WLAN_HELPER_DATA)
+ switch (ntohs(hdr->type))
{
+ case GNUNET_MESSAGE_TYPE_WLAN_HELPER_DATA:
#if DEBUG_wlan
- GNUNET_log(
- GNUNET_ERROR_TYPE_DEBUG,
- "Func wlan_process_helper got GNUNET_MESSAGE_TYPE_WLAN_HELPER_DATA size: %u\n",
- ntohs(hdr->size));
+ GNUNET_log(
+ GNUNET_ERROR_TYPE_DEBUG,
+ "Func wlan_process_helper got GNUNET_MESSAGE_TYPE_WLAN_HELPER_DATA size: %u\n",
+ ntohs(hdr->size));
#endif
- //call wlan_process_helper with the message inside, later with wlan: analyze signal
- GNUNET_assert(ntohs(hdr->size) >= sizeof(struct IeeeHeader) + sizeof(struct GNUNET_MessageHeader));
- wlanIeeeHeader = (struct IeeeHeader *) &hdr[1];
+ //call wlan_process_helper with the message inside, later with wlan: analyze signal
+ if (ntohs(hdr->size) < sizeof(struct ieee80211_frame)
+ + sizeof(struct GNUNET_MessageHeader) + sizeof(struct Radiotap_rx))
+ {
+#if DEBUG_wlan
+ GNUNET_log(
+ GNUNET_ERROR_TYPE_DEBUG,
+ "Size of packet is too small; size: %u min size: %u\n",
+ ntohs(hdr->size),
+ sizeof(struct ieee80211_frame)
+ + sizeof(struct GNUNET_MessageHeader));
+#endif
+ //GNUNET_break (0);
+ /* FIXME: restart SUID process */
+ return;
+ }
+ rxinfo = (struct Radiotap_rx *) &hdr[1];
+ wlanIeeeHeader = (struct ieee80211_frame *) &rxinfo[1];
- //process only if it is an broadcast or for this computer both with the gnunet bssid
+ //process only if it is an broadcast or for this computer both with the gnunet bssid
- //check for bssid
- if (memcmp(&(wlanIeeeHeader->mac2), macbc, sizeof(struct MacAddress))
- == 0)
- {
- //check for broadcast or mac
- if (memcmp(&(wlanIeeeHeader->mac1), bc_all_mac,
- sizeof(struct MacAddress) == 0) || memcmp(
- &(wlanIeeeHeader->mac1), &(plugin->mac_address),
- sizeof(struct MacAddress)) == 0)
- {
+ //check for bssid
+ if (memcmp(&(wlanIeeeHeader->i_addr3), &mac_bssid,
+ sizeof(struct MacAddress)) == 0)
+ {
+ //check for broadcast or mac
+ if (memcmp(&(wlanIeeeHeader->i_addr1), &bc_all_mac,
+ sizeof(struct MacAddress) == 0) || memcmp(
+ &(wlanIeeeHeader->i_addr1), &(plugin->mac_address),
+ sizeof(struct MacAddress)) == 0)
+ {
- // process the inner data
+ // process the inner data
- datasize = ntohs(hdr->size) - sizeof(struct IeeeHeader)
- - sizeof(struct GNUNET_MessageHeader);
+ datasize = ntohs(hdr->size) - sizeof(struct ieee80211_frame)
+ - sizeof(struct GNUNET_MessageHeader)
+ - sizeof(struct Radiotap_rx);
- session_light = GNUNET_malloc(sizeof(struct Session_light));
- memcpy(session_light->addr, &(wlanIeeeHeader->mac3),
- sizeof(struct MacAddress));
- //session_light->session = search_session(plugin,session_light->addr);
+ session_light = GNUNET_malloc(sizeof(struct Session_light));
+ memcpy(&session_light->addr, &(wlanIeeeHeader->i_addr2),
+ sizeof(struct MacAddress));
+ //session_light->session = search_session(plugin,session_light->addr);
- pos = 0;
- temp_hdr = (struct GNUNET_MessageHeader *) &wlanIeeeHeader[1];
- while (pos < datasize)
- {
- temp_hdr = (struct GNUNET_MessageHeader *) &wlanIeeeHeader[1]
- + pos;
+ pos = 0;
+ while (pos < datasize)
+ {
+ temp_hdr = (struct GNUNET_MessageHeader *) &wlanIeeeHeader[1]
+ + pos;
- wlan_data_helper(plugin, session_light, temp_hdr);
- pos += ntohs(temp_hdr->size);
+ wlan_data_helper(plugin, session_light, temp_hdr, rxinfo);
+ pos += ntohs(temp_hdr->size);
- }
+ }
- //clean up
- GNUNET_free(session_light);
- }
- else
- {
+ //clean up
+ GNUNET_free(session_light);
+ }
+ else
+ {
#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "Func wlan_process_helper got wrong MAC: %s\n", macprinter(
- wlanIeeeHeader->mac1));
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+ "Func wlan_process_helper got wrong MAC: %s\n",
+ macprinter(wlanIeeeHeader->i_addr1));
#endif
- }
- }
- else
- {
+ }
+ }
+ else
+ {
#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "Func wlan_process_helper got wrong BSSID: %s\n", macprinter(
- wlanIeeeHeader->mac2));
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+ "Func wlan_process_helper got wrong BSSID: %s\n",
+ macprinter(wlanIeeeHeader->i_addr2));
#endif
- }
-
- }
-
- else if (ntohs(hdr->type) == GNUNET_MESSAGE_TYPE_WLAN_HELPER_CONTROL)
- {
-
+ }
+ break;
+ case GNUNET_MESSAGE_TYPE_WLAN_HELPER_CONTROL:
+ //TODO more control messages
+ //TODO use struct wlan_helper_control
+ if (ntohs(hdr->size) != sizeof(struct Wlan_Helper_Control_Message))
+ {
+ GNUNET_break (0);
+ /* FIXME: restart SUID process */
+ return;
+ }
+ memcpy(&plugin->mac_address, &hdr[1], sizeof(struct MacAddress));
#if DEBUG_wlan
- GNUNET_log(
- GNUNET_ERROR_TYPE_DEBUG,
- "Func wlan_process_helper got GNUNET_MESSAGE_TYPE_WLAN_HELPER_CONTROL size: %u\n",
- ntohs(hdr->size));
+ GNUNET_log(
+ GNUNET_ERROR_TYPE_DEBUG,
+ "Received WLAN_HELPER_CONTROL message with transport of address %s\n",
+ wlan_plugin_address_to_string(cls, &plugin->mac_address,
+ sizeof(struct MacAddress)));
#endif
-
- //TODO more control messages
- //TODO use struct wlan_helper_control
- if (ntohs(hdr->size) == sizeof(struct Wlan_Helper_Control_Message))
- {
- //plugin->mac_address = GNUNET_malloc(sizeof(struct MacAddress));
- memcpy(&(plugin->mac_address), &hdr[1], sizeof(struct MacAddress));
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "Notifying transport of address %s\n",
- wlan_plugin_address_to_string(cls, &(plugin->mac_address), ntohs(
- hdr->size) - sizeof(struct GNUNET_MessageHeader)));
- plugin->env->notify_address(plugin->env->cls, "wlan",
- &plugin->mac_address, sizeof(struct MacAddress),
- GNUNET_TIME_UNIT_FOREVER_REL);
- }
- else
- {
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Wrong wlan mac address %s\n",
- macprinter(plugin->mac_address));
- }
-
- }
-
- else
- {
- // TODO Wrong data?
- GNUNET_log(GNUNET_ERROR_TYPE_INFO,
- "WLAN helper packet has not the right type\n");
- return;
+ plugin->env->notify_address(plugin->env->cls, GNUNET_YES,
+ &plugin->mac_address, sizeof(struct MacAddress));
+ break;
+ default:
+ GNUNET_break (0);
+ return;
}
}
* @param cls the plugin handle
* @param tc the scheduling context
*/
-
static void
wlan_plugin_helper_read(void *cls,
const struct GNUNET_SCHEDULER_TaskContext *tc)
struct Plugin *plugin = cls;
plugin->server_read_task = GNUNET_SCHEDULER_NO_TASK;
- /*
- #if DEBUG_wlan
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Start reading from STDIN\n");
- #endif
- */
- if (tc->reason == GNUNET_SCHEDULER_REASON_SHUTDOWN)
+ if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
return;
char mybuf[WLAN_MTU + sizeof(struct GNUNET_MessageHeader)];
static int
wlan_transport_start_wlan_helper(struct Plugin *plugin, int testmode)
{
- const char * filename = "gnunet-transport-wlan-helper";
+ const char * filenamehw = "gnunet-transport-wlan-helper";
+ const char * filenameloopback = "gnunet-transport-wlan-helper-dummy";
plugin->server_stdout = GNUNET_DISK_pipe(GNUNET_YES, GNUNET_NO, GNUNET_YES);
if (plugin->server_stdout == NULL)
return GNUNET_SYSERR;
if (plugin->server_stdin == NULL)
return GNUNET_SYSERR;
+ /* Start the server process */
+
+ if (testmode == 0)
+ {
+
#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "Starting gnunet-wlan-helper process cmd: %s %s %i\n", filename,
- plugin->interface, testmode);
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+ "Starting gnunet-wlan-helper process cmd: %s %s %i\n", filenamehw,
+ plugin->interface, testmode);
+#endif
+
+ plugin->server_proc = GNUNET_OS_start_process(plugin->server_stdin,
+ plugin->server_stdout, filenamehw, filenamehw, plugin->interface,
+ NULL);
+ }
+ else if (testmode == 1)
+ {
+
+#if DEBUG_wlan
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+ "Starting gnunet-wlan-helper loopback 1 process cmd: %s %s %i\n",
+ filenameloopback, plugin->interface, testmode);
#endif
- /* Start the server process */
- plugin->server_proc = GNUNET_OS_start_process(plugin->server_stdin,
- plugin->server_stdout, filename, filename, plugin->interface, ((testmode
- == 1) ? "1" : (testmode == 2) ? "2" : "0"), NULL);
+ plugin->server_proc = GNUNET_OS_start_process(plugin->server_stdin,
+ plugin->server_stdout, filenameloopback, filenameloopback, "1", NULL);
+ }
+ else if (testmode == 2)
+ {
+#if DEBUG_wlan
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+ "Starting gnunet-wlan-helper loopback 2 process cmd: %s %s %i\n",
+ filenameloopback, plugin->interface, testmode);
+#endif
+ plugin->server_proc = GNUNET_OS_start_process(plugin->server_stdin,
+ plugin->server_stdout, filenameloopback, filenameloopback, "2", NULL);
+ }
if (plugin->server_proc == NULL)
{
#if DEBUG_wlan
"Adding server_read_task for the wlan-helper\n");
#endif
- sleep(2);
-
plugin->server_read_task = GNUNET_SCHEDULER_add_read_file(
GNUNET_TIME_UNIT_FOREVER_REL, plugin->server_stdout_handle,
&wlan_plugin_helper_read, plugin);
{
struct GNUNET_TRANSPORT_PluginFunctions *api = cls;
struct Plugin *plugin = api->cls;
+ struct MacEndpoint * endpoint = plugin->mac_head;
+ struct MacEndpoint * endpoint_next;
#if DEBUG_wlan
GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
"libgnunet_plugin_transport_wlan_done started\n");
#endif
- GNUNET_assert(cls !=NULL);
+ GNUNET_DISK_pipe_close(plugin->server_stdout);
+ GNUNET_DISK_pipe_close(plugin->server_stdin);
+ GNUNET_OS_process_kill(plugin->server_proc, 9);
+ GNUNET_OS_process_close(plugin->server_proc);
+
+ GNUNET_assert (cls !=NULL);
+ //free sessions
+ while (endpoint != NULL)
+ {
+ endpoint_next = endpoint->next;
+ free_macendpoint(plugin, endpoint);
+ endpoint = endpoint_next;
+
+ }
+ if (plugin->server_write_delay_task != GNUNET_SCHEDULER_NO_TASK)
+ {
+ GNUNET_SCHEDULER_cancel(plugin->server_write_delay_task);
+ plugin->server_write_delay_task = GNUNET_SCHEDULER_NO_TASK;
+ }
+ if (plugin->server_write_task != GNUNET_SCHEDULER_NO_TASK)
+ {
+ GNUNET_SCHEDULER_cancel(plugin->server_write_task);
+ plugin->server_write_task = GNUNET_SCHEDULER_NO_TASK;
+ }
+ if (plugin->server_read_task != GNUNET_SCHEDULER_NO_TASK)
+ {
+ GNUNET_SCHEDULER_cancel(plugin->server_read_task);
+ plugin->server_read_task = GNUNET_SCHEDULER_NO_TASK;
+ }
if (plugin->suid_tokenizer != NULL)
GNUNET_SERVER_mst_destroy(plugin->suid_tokenizer);
plugin = GNUNET_malloc (sizeof (struct Plugin));
plugin->env = env;
plugin->pendingsessions = 0;
- plugin->session_count = 0;
+ plugin->mac_count = 0;
plugin->server_write_task = GNUNET_SCHEDULER_NO_TASK;
plugin->server_read_task = GNUNET_SCHEDULER_NO_TASK;
plugin->server_write_delay_task = GNUNET_SCHEDULER_NO_TASK;
+ GNUNET_BANDWIDTH_tracker_init(&plugin->tracker,
+ GNUNET_BANDWIDTH_value_init(100 * 1024 * 1024 / 8), 100);
- set_next_beacon_time(plugin);
+ plugin->suid_tokenizer = GNUNET_SERVER_mst_create(&wlan_process_helper,
+ plugin);
+
+ plugin->data_tokenizer = GNUNET_SERVER_mst_create(&process_data, plugin);
+
+ //plugin->sessions = GNUNET_malloc (sizeof (struct Sessionqueue));
+ //plugin->pending_Sessions_head = GNUNET_malloc (sizeof (struct Sessionqueue));
+
+ api = GNUNET_malloc (sizeof (struct GNUNET_TRANSPORT_PluginFunctions));
+ api->cls = plugin;
+ api->send = &wlan_plugin_send;
+ api->disconnect = &wlan_plugin_disconnect;
+ api->address_pretty_printer = &wlan_plugin_address_pretty_printer;
+ api->check_address = &wlan_plugin_address_suggested;
+ api->address_to_string = &wlan_plugin_address_to_string;
+ //read config
if (GNUNET_CONFIGURATION_have_value(env->cfg, "transport-wlan", "TESTMODE"))
{
if (GNUNET_SYSERR == GNUNET_CONFIGURATION_get_value_number(env->cfg,
"transport-wlan", "TESTMODE", &testmode))
- return NULL;
+ testmode = 0; //default value
}
if (GNUNET_CONFIGURATION_have_value(env->cfg, "transport-wlan", "INTERFACE"))
if (GNUNET_CONFIGURATION_get_value_string(env->cfg, "transport-wlan",
"INTERFACE", &(plugin->interface)) != GNUNET_YES)
{
- libgnunet_plugin_transport_wlan_done(plugin);
+ libgnunet_plugin_transport_wlan_done(api);
return NULL;
}
}
- wlan_transport_start_wlan_helper(plugin, testmode);
- plugin->suid_tokenizer = GNUNET_SERVER_mst_create(&wlan_process_helper,
- plugin);
-
- plugin->data_tokenizer = GNUNET_SERVER_mst_create(&process_data, plugin);
-
- //plugin->sessions = GNUNET_malloc (sizeof (struct Sessionqueue));
- //plugin->pending_Sessions = GNUNET_malloc (sizeof (struct Sessionqueue));
-
- api = GNUNET_malloc (sizeof (struct GNUNET_TRANSPORT_PluginFunctions));
- api->cls = plugin;
- api->send = &wlan_plugin_send;
- api->disconnect = &wlan_plugin_disconnect;
- api->address_pretty_printer = &wlan_plugin_address_pretty_printer;
- api->check_address = &wlan_plugin_address_suggested;
- api->address_to_string = &wlan_plugin_address_to_string;
+ //start the plugin
+ set_next_beacon_time(plugin);
- start_next_message_id();
+ wlan_transport_start_wlan_helper(plugin, testmode);
#if DEBUG_wlan
GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "wlan init finished\n");
projects / oweals / gnunet.git / blobdiff