/*
- This file is part of GNUnet
- (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Christian Grothoff (and other contributing authors)
+ This file is part of GNUnet
+ (C) 2010, 2011, 2012 Christian Grothoff (and other contributing authors)
- GNUnet is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published
- by the Free Software Foundation; either version 3, or (at your
- option) any later version.
+ GNUnet is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published
+ by the Free Software Foundation; either version 3, or (at your
+ option) any later version.
- GNUnet is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
+ GNUnet is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with GNUnet; see the file COPYING. If not, write to the
- Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA.
- */
+ You should have received a copy of the GNU General Public License
+ along with GNUnet; see the file COPYING. If not, write to the
+ Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA.
+*/
/**
* @file transport/plugin_transport_wlan.c
* @brief transport plugin for wlan
* @author David Brodski
+ * @author Christian Grothoff
*/
+//TODO split rx and tx structures for better handling
+
#include "platform.h"
#include "gnunet_hello_lib.h"
#include "gnunet_protocols.h"
#include "plugin_transport_wlan.h"
#include "gnunet_common.h"
#include "gnunet_crypto_lib.h"
+#include "gnunet_fragmentation_lib.h"
+#include "gnunet_constants.h"
+
+/**
+ * DEBUG switch
+ */
+#define DEBUG_WLAN GNUNET_EXTRA_LOGGING
+
#define PROTOCOL_PREFIX "wlan"
+#define PLUGIN_LOG_NAME "wlan-plugin"
+
/**
- * Max size of packet from helper
+ * Max size of packet
*/
-#define WLAN_MTU 3000
+#define WLAN_MTU 1430
/**
- * Time until retransmission of a fragment in ms
+ * time out of a session
*/
-#define FRAGMENT_TIMEOUT GNUNET_TIME_UNIT_SECONDS
+#define SESSION_TIMEOUT GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT
-#define FRAGMENT_QUEUE_SIZE 10
-#define FRAGMENT_QUEUE_MESSAGES_OUT_PER_SESSION 1
+/**
+ * time out of a mac endpoint
+ */
+#define MACENDPOINT_TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT, 2)
-#define MESSAGE_IN_TIMEOUT GNUNET_TIME_UNIT_SECONDS
+/**
+ * scaling factor for hello beacon
+ */
+#define HELLO_BEACON_SCALING_FACTOR 30
-#define MESSAGES_IN_QUEUE_SIZE 10
-#define MESSAGES_IN_QUEUE_PER_SESSION 1
+/**
+ * scaling factor for restarting the helper
+ */
+#define HELPER_RESTART_SCALING_FACTOR 2
-#define HALLO_BEACON_SCALING_FACTOR 900
+/**
+ * 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
-#define DEBUG_wlan GNUNET_YES
+/**
+ * max messages in fragment queue per MAC
+ */
+#define FRAGMENT_QUEUE_MESSAGES_OUT_PER_MACENDPOINT 1
-#define MESSAGE_LENGHT_UNKNOWN -1
-//#define NO_MESSAGE_OR_MESSAGE_FINISHED -2
+/**
+ * max messages in in queue
+ */
+#define MESSAGES_IN_QUEUE_SIZE 10
/**
- * After how long do we expire an address that we
- * learned from another peer if it is not reconfirmed
- * by anyone?
+ * max messages in in queue per session/client
*/
-#define LEARNED_ADDRESS_EXPIRATION GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_HOURS, 6)
+#define MESSAGES_IN_DEFRAG_QUEUE_PER_MAC 1
/**
- * Initial handshake message for a session.
+ * Link layer control fields for better compatibility
+ * (i.e. GNUnet over WLAN is not IP-over-WLAN).
*/
-struct WelcomeMessage
-{
- /**
- * Type is GNUNET_MESSAGE_TYPE_TRANSPORT_TCP_WELCOME.
- */
- struct GNUNET_MessageHeader header;
+#define WLAN_LLC_DSAP_FIELD 0x1f
+#define WLAN_LLC_SSAP_FIELD 0x1f
- /**
- * Identit*mac_y of the node connecting (TCP client)
- */
- struct GNUNET_PeerIdentity clientIdentity;
-};
/**
* Encapsulation of all of the state of the plugin.
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;
+ struct GNUNET_SERVER_MessageStreamTokenizer *suid_tokenizer;
/**
- * encapsulation of packets received
+ * encapsulation of packets received from the wlan helper
*/
-
- struct GNUNET_SERVER_MessageStreamTokenizer * data_tokenizer;
+ struct GNUNET_SERVER_MessageStreamTokenizer *data_tokenizer;
/**
- * stdout pipe handle for the gnunet-wlan-helper process
+ * stdout pipe handle for the gnunet-helper-transport-wlan process
*/
struct GNUNET_DISK_PipeHandle *server_stdout;
/**
- * stdout file handle for the gnunet-wlan-helper process
+ * stdout file handle for the gnunet-helper-transport-wlan process
*/
const struct GNUNET_DISK_FileHandle *server_stdout_handle;
/**
- * stdin pipe handle for the gnunet-wlan-helper process
+ * stdin pipe handle for the gnunet-helper-transport-wlan process
*/
struct GNUNET_DISK_PipeHandle *server_stdin;
/**
- * stdin file handle for the gnunet-wlan-helper process
+ * stdin file handle for the gnunet-helper-transport-wlan process
*/
const struct GNUNET_DISK_FileHandle *server_stdin_handle;
*/
char *interface;
+ /**
+ * Mode of operation for the helper, 0 = normal, 1 = first loopback, 2 = second loopback
+ */
+ long long unsigned int testmode;
+
/**
* The mac_address of the wlan card given to us by the helper.
*/
- struct MacAddress mac_address;
+ struct GNUNET_TRANSPORT_WLAN_MacAddress mac_address;
/**
* 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;
+ struct Sessionqueue *pending_Sessions_tail;
/**
* number of pending sessions
unsigned int pendingsessions;
/**
- * Messages in the fragmentation queue, head
+ * Messages in the sending queues
*/
-
- struct FragmentMessage * pending_Fragment_Messages_head;
+ int pending_Fragment_Messages;
/**
- * Messages in the fragmentation queue, tail
+ * messages ready for send, head
*/
-
- struct FragmentMessage * pending_Fragment_Messages_tail;
+ struct FragmentMessage_queue *sending_messages_head;
/**
- * number of pending fragment message
+ * messages ready for send, tail
*/
-
- unsigned int pending_fragment_messages;
+ struct FragmentMessage_queue *sending_messages_tail;
/**
- * Messages in the in Queue, head
+ * time of the next "hello-beacon"
*/
-
- struct Receive_Message_Queue * receive_messages_head;
+ struct GNUNET_TIME_Absolute beacon_time;
/**
- * Messages in the in Queue, tail
+ * queue to send acks for received fragments (head)
*/
-
- struct Receive_Message_Queue * receive_messages_teil;
+ struct AckSendQueue *ack_send_queue_head;
/**
- * number of messages in the in queue
+ * queue to send acks for received fragments (tail)
*/
-
- unsigned int pending_receive_messages;
+ struct AckSendQueue *ack_send_queue_tail;
/**
- * time of the next "hello-beacon"
+ * Tracker for bandwidth limit
*/
-
- struct GNUNET_TIME_Absolute beacon_time;
+ struct GNUNET_BANDWIDTH_Tracker tracker;
/**
- * queue to send acks for received fragments (head)
+ * saves the current state of the helper process
*/
+ int helper_is_running;
+};
- struct AckSendQueue * ack_send_queue_head;
+/**
+ * Struct to store data if file write did not accept the whole packet
+ */
+struct Finish_send
+{
+ /**
+ * pointer to the global plugin struct
+ */
+ struct Plugin *plugin;
/**
- * queue to send acks for received fragments (tail)
+ * head of the next part to send to the helper
*/
+ const char *head_of_next_write;
- struct AckSendQueue * ack_send_queue_tail;
+ /**
+ * Start of the message to send, needed for free
+ */
+ struct GNUNET_MessageHeader *msgstart;
+ /**
+ * rest size to send
+ */
+ ssize_t size;
};
/**
- * Struct to store data if file write did not accept the whole packet
+ * Queue of sessions, for the general session queue and the pending session queue
*/
-struct Finish_send
+//TODO DOXYGEN
+struct Sessionqueue
{
- struct Plugin * plugin;
- char * msgheader;
- struct GNUNET_MessageHeader * msgstart;
- ssize_t size;
+ struct Sessionqueue *next;
+ struct Sessionqueue *prev;
+ struct Session *content;
+#if !HAVE_UNALIGNED_64_ACCESS
+ void *dummy; /* for alignment, see #1909 */
+#endif
};
+
/**
- * Queue of sessions, for the general session queue and the pending session queue
+ * Queue of fragmented messages, for the sending queue of the plugin
*/
-
-struct Sessionqueue
+//TODO DOXYGEN
+struct FragmentMessage_queue
{
- struct Sessionqueue * next;
- struct Sessionqueue * prev;
- struct Session * content;
+ struct FragmentMessage_queue *next;
+ struct FragmentMessage_queue *prev;
+ struct FragmentMessage *content;
};
+
/**
* Queue for the fragments received
*/
-
+//TODO DOXYGEN
struct Receive_Fragment_Queue
{
- struct Receive_Fragment_Queue * next;
- struct Receive_Fragment_Queue * prev;
+ struct Receive_Fragment_Queue *next;
+ struct Receive_Fragment_Queue *prev;
+
uint16_t num;
- const char * msg;
- uint16_t size;
+ // const char *msg;
+ // uint16_t size;
+ struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage *rx_msg;
};
-/**
- * Queue for the fragments received
- */
-struct Receive_Message_Queue
+//TODO DOXYGEN
+struct MacEndpoint_id_fragment_triple
{
- struct Receive_Message_Queue * next;
+ struct MacEndpoint *endpoint;
+ uint32_t message_id;
+ struct FragmentMessage *fm;
+};
- struct Receive_Message_Queue * prev;
+//TODO DOXYGEN
+struct Plugin_Session_pair
+{
+ struct Plugin *plugin;
+ struct Session *session;
+};
- /**
- * 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
- */
+GNUNET_NETWORK_STRUCT_BEGIN
- int rec_size;
+/**
+ * Header for messages which need fragmentation
+ */
+struct WlanHeader
+{
/**
- * Sorted queue with the fragments received; head
+ * Message type is GNUNET_MESSAGE_TYPE_WLAN_DATA.
*/
-
- struct Receive_Fragment_Queue * frag_head;
+ struct GNUNET_MessageHeader header;
/**
- * Sorted queue with the fragments received; tail
+ * checksum/error correction
*/
-
- struct Receive_Fragment_Queue * frag_tail;
+ uint32_t crc GNUNET_PACKED;
/**
- * Session this fragment belongs to
+ * To whom are we talking to (set to our identity
+ * if we are still waiting for the welcome message)
*/
-
- struct Session * session;
+ struct GNUNET_PeerIdentity target;
/**
- * Timeout value for the pending message.
+ * Where the packet came from
*/
- struct GNUNET_TIME_Absolute timeout;
+ struct GNUNET_PeerIdentity source;
- /**
- * Bitfield of received fragments
- */
+// followed by payload
- uint64_t received_fragments;
};
+GNUNET_NETWORK_STRUCT_END
/**
* Information kept for each message that is yet to
*/
struct PendingMessage
{
+ /**
+ * dll next
+ */
+ struct PendingMessage *next;
+
+ /**
+ * dll prev
+ */
+ struct PendingMessage *prev;
/**
* The pending message
*/
- char *msg;
+ struct WlanHeader *msg;
/**
* Size of the message
/**
* Cls for transmit_cont
*/
- void * transmit_cont_cls;
+ void *transmit_cont_cls;
/**
* Timeout value for the pending message.
};
+
/**
* Queue for acks to send for fragments recived
*/
-//TODO comments
struct AckSendQueue
{
- struct AckSendQueue * next;
- struct AckSendQueue * prev;
-
- struct Session * session;
/**
- * ID of message, to distinguish between the messages, picked randomly.
+ * next ack in the ack send queue
*/
- uint32_t message_id;
+ struct AckSendQueue *next;
/**
- * Bit field for received fragments
+ * previous ack in the ack send queue
*/
- uint64_t fragments_field;
-
-};
+ struct AckSendQueue *prev;
-/**
- * Session infos gathered from a messages
- */
+ /**
+ * pointer to the session this ack belongs to
+ */
+ struct MacEndpoint *endpoint;
-struct Session_light
-{
/**
- * the session this message belongs to
+ * ID of message, to distinguish between the messages, picked randomly.
*/
- struct Session * session;
+ uint32_t message_id;
+
/**
- * peer mac address
+ * pointer to the radiotap header with the ACK Message.
*/
- uint8_t addr[6];
+ const struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage *radioHeader;
};
+
/**
* Session handle for connections.
*/
*/
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).
/**
* Last activity on this connection. Used to select preferred
- * connection.
+ * connection and timeout
*/
struct GNUNET_TIME_Absolute last_activity;
/**
- * count of messages in the fragment out queue for this session
+ * Timeout task.
*/
+ GNUNET_SCHEDULER_TaskIdentifier timeout_task;
- int fragment_messages_out_count;
+ /**
+ * peer connection
+ */
+ 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 GNUNET_TRANSPORT_WLAN_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;
-};
+ int fragment_messages_out_count;
-/**
- * Header for messages which need fragmentation
- */
-struct WlanHeader
-{
+ //TODO DOXYGEN
+ uint8_t rate;
+ uint16_t tx_power;
+ uint8_t antenna;
- struct GNUNET_MessageHeader header;
+ /**
+ * Duplicates received
+ */
+ int dups;
/**
- * checksum/error correction
+ * Fragments received
*/
- uint32_t crc GNUNET_PACKED;
+ int fragc;
/**
- * To whom are we talking to (set to our identity
- * if we are still waiting for the welcome message)
+ * Acks received
*/
- struct GNUNET_PeerIdentity target;
+ int acks;
-// followed by payload
+ /**
+ * Last activity on this endpoint. Used to select preferred
+ * connection.
+ */
+ struct GNUNET_TIME_Absolute last_activity;
+ /**
+ * Timeout task.
+ */
+ GNUNET_SCHEDULER_TaskIdentifier timeout_task;
};
/**
- * Header for messages which need fragmentation
+ * Struct for Messages in the fragment queue
*/
-struct FragmentationHeader
+struct FragmentMessage
{
- struct GNUNET_MessageHeader header;
-
/**
- * 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
-
-};
-
-/**
- * Header for messages which need fragmentation
- */
-struct FragmentationAckHeader
-{
+ struct FragmentMessage *prev;
- struct GNUNET_MessageHeader header;
+ /**
+ * Fragmentation context
+ */
+ struct GNUNET_FRAGMENT_Context *fragcontext;
/**
- * ID of message, to distinguish between the messages, picked randomly.
+ * Timeout value for the message.
*/
- uint32_t message_id GNUNET_PACKED;
+ struct GNUNET_TIME_Absolute timeout;
/**
- * Offset or number of this fragment, for fragmentation/segmentation (design choice, TBD)
+ * Timeout task.
*/
- uint64_t fragment_field GNUNET_PACKED;
+ GNUNET_SCHEDULER_TaskIdentifier timeout_task;
+ /**
+ * pointer to the radiotap header
+ */
+ struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage *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);
+static void
+do_transmit (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
-uint16_t
-getcrc16(const char *msgbuf, size_t msgbuf_size);
static void
-do_transmit(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
+free_session (struct Plugin *plugin, struct Sessionqueue *queue,
+ int do_free_macendpoint);
-static void
-check_fragment_queue(struct Plugin * plugin);
-uint32_t
-getcrc32(const char *msgbuf, size_t msgbuf_size);
+static struct MacEndpoint *
+create_macendpoint (struct Plugin *plugin, const struct GNUNET_TRANSPORT_WLAN_MacAddress *addr);
+
static void
-free_receive_message(struct Plugin* plugin,
- struct Receive_Message_Queue * rec_message);
+finish_sending (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
-struct Receive_Message_Queue *
-get_receive_message_from_session(struct Plugin * plugin,
- struct Session * session);
+/**
+ * Generates a nice hexdump of a memory area.
+ *
+ * \param mem pointer to memory to dump
+ * \param length how many bytes to dump
+ */
static void
-wlan_data_helper(void *cls, struct Session_light * session_light,
- const struct GNUNET_MessageHeader * hdr);
+hexdump (const void *mem, unsigned length)
+{
+ char line[80];
+ char *src = (char *) mem;
-static void
-wlan_process_helper(void *cls, void *client,
- 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 void
-finish_sending(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
+ for (i = 0; i < length; i += 16, src += 16)
+ {
+ char *t = line;
-static void
-wlan_data_massage_handler(struct Plugin * plugin,
- struct Session_light * session_light,
- const struct GNUNET_MessageHeader * hdr);
+ 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, " ");
-static const char *
-wlan_plugin_address_to_string(void *cls, const void *addr, size_t addrlen);
+ t += sprintf (t, (j % 2) ? " " : "-");
+ }
-struct Receive_Message_Queue *
-get_receive_message(struct Plugin * plugin, struct Session * session,
- uint32_t message_id);
+ 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
-htonll(uint64_t input)
-{
- return input;
+ t += sprintf (t, "\r\n");
+ printf ("%s", line);
+ }
}
-static uint64_t
-ntohll(uint64_t input)
-{
- return input;
-}
/**
- * 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 GNUNET_TRANSPORT_WLAN_MacAddress *addr,
+ int create_new)
{
- size_t arraySlot;
- unsigned int targetBit;
+ struct MacEndpoint *queue = plugin->mac_head;
- arraySlot = bitIdx / 8;
- targetBit = (1L << (bitIdx % 8));
- bitArray[arraySlot] |= targetBit;
+ while (queue != NULL)
+ {
+ //GNUNET_assert (queue->sessions_head != NULL);
+ if (memcmp (addr, &queue->addr, sizeof (struct GNUNET_TRANSPORT_WLAN_MacAddress)) == 0)
+ return queue; /* session found */
+ queue = queue->next;
+ }
+
+ if (create_new == GNUNET_YES)
+ {
+ return create_macendpoint (plugin, addr);
+ }
+ else
+ {
+ return NULL;
+ }
}
+
/**
- * Clears a bit from bitArray. Bit is cleared from the array
- * only if the respective usage counter on the disk hits/is zero.
+ * search for a session with the macendpoint and peer id
*
- * @param bitArray memory area to set the bit in
- * @param bitIdx which bit to unset
+ * @param plugin pointer to the plugin struct
+ * @param endpoint pointer to the mac endpoint of the peer
+ * @param peer pointer to the peerid
+ * @return returns the session
*/
-/*static void
-clearBit(char *bitArray, unsigned int bitIdx)
+static struct Session *
+search_session (struct Plugin *plugin, const struct MacEndpoint *endpoint,
+ const struct GNUNET_PeerIdentity *peer)
{
- size_t slot;
- unsigned int targetBit;
+ GNUNET_assert (endpoint != NULL);
+ struct Sessionqueue *queue = endpoint->sessions_head;
- 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;
- else
- return GNUNET_NO;
+ while (queue != NULL)
+ {
+ GNUNET_assert (queue->content != NULL);
+ if (memcmp
+ (peer, &queue->content->target,
+ sizeof (struct GNUNET_PeerIdentity)) == 0)
+ return queue->content; /* session found */
+ queue = queue->next;
+ }
+ return NULL;
}
/**
- * get the next message number, at the moment just a random one
- * @return returns the next valid message-number for sending packets
+ * 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
*/
-uint32_t
-get_next_message_id()
+static const char *
+wlan_plugin_address_to_string (void *cls, const void *addr, size_t addrlen)
{
- return GNUNET_CRYPTO_random_u32(GNUNET_CRYPTO_QUALITY_NONCE, UINT32_MAX);
-}
+ static char ret[40];
+ const struct GNUNET_TRANSPORT_WLAN_MacAddress *mac;
+
+ if (addrlen != sizeof (struct GNUNET_TRANSPORT_WLAN_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]);
-/**
- * start next message number generator
- * (not necessary at the moment)
- */
-void
-start_next_message_id()
-{
- //GNUNET_CRYPTO_random_init;
+ return ret;
}
/**
- * search for a session with the addr
- *
- * @param plugin pointer to the plugin struct
- * @param addr pointer to the mac address of the peer
- * @return returns the session
+ * Function for the scheduler if a session times out
+ * @param cls pointer to the Sessionqueue
+ * @param tc pointer to the GNUNET_SCHEDULER_TaskContext
*/
-
-static struct Session *
-search_session(struct Plugin *plugin, const uint8_t * addr)
+static void
+session_timeout (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
- struct Sessionqueue * queue = plugin->sessions;
- struct Sessionqueue * lastitem = NULL;
+ struct Sessionqueue *queue = cls;
- //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;
- queue = queue->next;
- }
- return NULL;
+ GNUNET_assert (queue != NULL);
+ GNUNET_assert (queue->content != NULL);
+ queue->content->timeout_task = GNUNET_SCHEDULER_NO_TASK;
+ if (tc->reason == GNUNET_SCHEDULER_REASON_SHUTDOWN)
+ {
+ return;
+ }
+ if (GNUNET_TIME_absolute_get_remaining
+ (GNUNET_TIME_absolute_add
+ (queue->content->last_activity, SESSION_TIMEOUT)).rel_value == 0)
+ {
+
+ GNUNET_assert (queue->content->mac != NULL);
+ GNUNET_assert (queue->content->mac->plugin != NULL);
+ GNUNET_STATISTICS_update (queue->content->mac->plugin->env->stats,
+ _("# wlan session timeouts"), 1, GNUNET_NO);
+ free_session (queue->content->mac->plugin, queue, GNUNET_YES);
+ }
+ else
+ {
+ queue->content->timeout_task =
+ GNUNET_SCHEDULER_add_delayed (SESSION_TIMEOUT, &session_timeout, queue);
+ }
}
/**
* create a new session
*
* @param plugin pointer to the plugin struct
- * @param addr pointer to the mac address of the peer
+ * @param endpoint pointer to the mac endpoint of the peer
+ * @param peer peer identity to use for this session
* @return returns the session
*/
-
static struct Session *
-create_session(struct Plugin *plugin, const uint8_t * addr)
-{
- struct Sessionqueue * queue = GNUNET_malloc (sizeof (struct Sessionqueue));
-
- GNUNET_CONTAINER_DLL_insert_tail(plugin->sessions, plugin->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++;
-
-#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));
-#endif
-
+create_session (struct Plugin *plugin, struct MacEndpoint *endpoint,
+ const struct GNUNET_PeerIdentity *peer)
+{
+ GNUNET_assert (endpoint != NULL);
+ GNUNET_assert (plugin != NULL);
+ GNUNET_STATISTICS_update (plugin->env->stats, _("# wlan session created"), 1,
+ GNUNET_NO);
+ struct Sessionqueue *queue =
+ GNUNET_malloc (sizeof (struct Sessionqueue) + sizeof (struct Session));
+
+ GNUNET_CONTAINER_DLL_insert_tail (endpoint->sessions_head,
+ endpoint->sessions_tail, queue);
+
+ queue->content = (struct Session *) &queue[1];
+ queue->content->mac = endpoint;
+ queue->content->target = *peer;
+ queue->content->last_activity = GNUNET_TIME_absolute_get ();
+ queue->content->timeout_task =
+ GNUNET_SCHEDULER_add_delayed (SESSION_TIMEOUT, &session_timeout, queue);
+
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "New session %p with endpoint %p: %s\n", queue->content,
+ endpoint, wlan_plugin_address_to_string (NULL,
+ endpoint->addr.mac,
+ 6));
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 GNUNET_TRANSPORT_WLAN_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)
+ {
+ while (queue != NULL)
{
// content is never NULL
GNUNET_assert (queue->content != NULL);
// is session already in queue?
if (session == queue->content)
- {
- return;
- }
+ {
+ return;
+ }
// 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++;
+ GNUNET_STATISTICS_set (plugin->env->stats, _("# wlan pending sessions"),
+ plugin->pendingsessions, GNUNET_NO);
+ }
}
-//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)
+delay_fragment_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
- struct Plugin * plugin = cls;
+ 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
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);
- }
+ {
+ plugin->server_write_task =
+ GNUNET_SCHEDULER_add_write_file (GNUNET_TIME_UNIT_FOREVER_REL,
+ plugin->server_stdin_handle,
+ &do_transmit, plugin);
+ }
}
-//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)
+set_next_beacon_time (struct Plugin *const plugin)
{
//under 10 known peers: once a second
- if (plugin->session_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));
- }
+ if (plugin->mac_count < 10)
+ {
+ plugin->beacon_time =
+ GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get (),
+ GNUNET_TIME_relative_multiply
+ (GNUNET_TIME_UNIT_SECONDS,
+ HELLO_BEACON_SCALING_FACTOR));
+ }
//under 30 known peers: every 10 seconds
- else if (plugin->session_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));
- }
+ 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 * HELLO_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));
- }
+ {
+ plugin->beacon_time =
+ GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get (),
+ GNUNET_TIME_relative_multiply
+ (GNUNET_TIME_UNIT_MINUTES,
+ HELLO_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 *plugin)
{
- struct FragmentMessage * fm;
struct GNUNET_TIME_Relative next_send;
- next_send = GNUNET_TIME_absolute_get_remaining(plugin->beacon_time);
+ //abort if helper is not running
+ if (plugin->helper_is_running == GNUNET_NO)
+ {
+ return;
+ }
//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);
+ {
+ GNUNET_SCHEDULER_cancel (plugin->server_write_delay_task);
+ 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_UNIT_ZERO;
+ }
+
+ //check if there are some fragments in the queue
+ else if (plugin->sending_messages_head != NULL)
+ {
+ next_send = GNUNET_TIME_UNIT_ZERO;
+ }
+ else
+ {
+ next_send = GNUNET_TIME_absolute_get_remaining (plugin->beacon_time);
+ }
+
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Next packet is send in: %u\n", next_send.rel_value);
+ if (next_send.rel_value == GNUNET_TIME_UNIT_ZERO.rel_value)
+ {
+ if (plugin->server_write_task == GNUNET_SCHEDULER_NO_TASK)
{
- next_send = GNUNET_TIME_relative_get_zero();
+ plugin->server_write_task =
+ GNUNET_SCHEDULER_add_write_file (GNUNET_TIME_UNIT_FOREVER_REL,
+ plugin->server_stdin_handle,
+ &do_transmit, plugin);
}
- //check if there are some fragments in the queue
- else if (fm != NULL)
+ }
+ else
+ {
+ if (plugin->server_write_delay_task == GNUNET_SCHEDULER_NO_TASK)
{
- next_send
- = GNUNET_TIME_relative_min(next_send, get_next_frag_timeout(fm));
+ 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;
- while (sessionqueue != NULL)
- {
- session = sessionqueue->content;
-
- pm = session->pending_message;
- if (pm == NULL){
-#if DEBUG_wlan
- 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)
- {
- plugin->pendingsessions--;
- GNUNET_CONTAINER_DLL_remove (plugin->pending_Sessions,
- plugin->pending_Sessions_tail, sessionqueue);
- GNUNET_free(sessionqueue);
-
- return session;
- }
- else
- {
- sessionqueue = sessionqueue->next;
- }
- }
- else
- {
-
- session->pending_message = session->pending_message2;
- session->pending_message2 = NULL;
+ struct Session *session;
+ struct Sessionqueue *sessionqueue;
+ struct Sessionqueue *sessionqueue_alt;
+ struct PendingMessage *pm;
- //call the cont func that it did not work
- if (pm->transmit_cont != NULL)
- pm->transmit_cont(pm->transmit_cont_cls, &(session->target),
- GNUNET_SYSERR);
- GNUNET_free(pm->msg);
- GNUNET_free(pm);
+ sessionqueue = plugin->pending_Sessions_head;
- if (session->pending_message == NULL)
- {
- sessionqueue_alt = sessionqueue;
- sessionqueue = sessionqueue->next;
- plugin->pendingsessions--;
- GNUNET_CONTAINER_DLL_remove (plugin->pending_Sessions,
- plugin->pending_Sessions_tail, sessionqueue_alt);
+ while (sessionqueue != NULL)
+ {
+ session = sessionqueue->content;
- GNUNET_free(sessionqueue_alt);
- }
+ GNUNET_assert (session != NULL);
+ pm = session->pending_message_head;
- }
+ if (pm == NULL)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, PLUGIN_LOG_NAME,
+ "pending message is empty, should not happen. session %p\n",
+ session);
+ sessionqueue_alt = sessionqueue;
+ sessionqueue = sessionqueue->next;
+ plugin->pendingsessions--;
+ GNUNET_STATISTICS_set (plugin->env->stats, _("# wlan pending sessions"),
+ plugin->pendingsessions, GNUNET_NO);
+ GNUNET_CONTAINER_DLL_remove (plugin->pending_Sessions_head,
+ plugin->pending_Sessions_tail,
+ sessionqueue_alt);
+
+ GNUNET_free (sessionqueue_alt);
+ continue;
}
- 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)
+ //check for message timeout
+ if (GNUNET_TIME_absolute_get_remaining (pm->timeout).rel_value > 0)
{
- if (GNUNET_TIME_absolute_get_difference(fm2->next_ack, fm->next_ack).rel_value
- == 0)
- {
- break;
- }
+ //check if session has no message in the fragment queue
+ 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_STATISTICS_set (plugin->env->stats, _("# wlan pending sessions"),
+ plugin->pendingsessions, GNUNET_NO);
+ GNUNET_CONTAINER_DLL_remove (plugin->pending_Sessions_head,
+ plugin->pending_Sessions_tail,
+ sessionqueue);
+ GNUNET_free (sessionqueue);
+
+ return session;
+ }
else
- {
- fm2 = fm2->next;
- }
+ {
+ sessionqueue = sessionqueue->next;
+ }
+ }
+ else
+ {
+ 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)
+ pm->transmit_cont (pm->transmit_cont_cls, &(session->target),
+ GNUNET_SYSERR);
+ GNUNET_free (pm->msg);
+ GNUNET_free (pm);
+
+ if (session->pending_message_head == NULL)
+ {
+ sessionqueue_alt = sessionqueue;
+ sessionqueue = sessionqueue->next;
+ plugin->pendingsessions--;
+ GNUNET_STATISTICS_set (plugin->env->stats, _("# wlan pending sessions"),
+ plugin->pendingsessions, GNUNET_NO);
+ GNUNET_CONTAINER_DLL_remove (plugin->pending_Sessions_head,
+ plugin->pending_Sessions_tail,
+ sessionqueue_alt);
+
+ GNUNET_free (sessionqueue_alt);
+ }
}
- GNUNET_CONTAINER_DLL_insert_after(plugin->pending_Fragment_Messages_head,
- plugin->pending_Fragment_Messages_tail,fm2,fm);
+ }
+ return NULL;
}
/**
* @param fm message to free
*/
static void
-free_fragment_message(struct Plugin * plugin, struct FragmentMessage * fm)
-{
- if (fm != NULL)
+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;
+
+ fmq = plugin->sending_messages_head;
+ while (fmq != NULL)
+ {
+ fmq_next = fmq->next;
+ if (fmq->content == fm)
{
- (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);
- GNUNET_free(fm);
- plugin->pending_fragment_messages--;
-
-#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "free pending fragment messages, pending messages remaining %u\n",
- plugin->pending_fragment_messages);
-#endif
+ 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_STATISTICS_set (plugin->env->stats, _("# wlan pending fragments"),
+ plugin->pending_Fragment_Messages, GNUNET_NO);
+ GNUNET_CONTAINER_DLL_remove (endpoint->sending_messages_head,
+ endpoint->sending_messages_tail, fm);
+ GNUNET_FRAGMENT_context_destroy (fm->fragcontext);
+ if (fm->timeout_task != GNUNET_SCHEDULER_NO_TASK)
+ {
+ GNUNET_SCHEDULER_cancel (fm->timeout_task);
+ fm->timeout_task = GNUNET_SCHEDULER_NO_TASK;
+ }
+ GNUNET_free (fm);
+ queue_session (plugin, session);
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Free pending fragment messages %p, session %p\n", fm,
+ session);
}
+
/**
- * 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
+ * @param size total message size
+ * @return GNUNET_YES at success
*/
+static int
+getRadiotapHeader (struct Plugin *plugin, struct MacEndpoint *endpoint,
+ struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage *header,
+ uint16_t size)
+{
+ header->header.type = ntohs (GNUNET_MESSAGE_TYPE_WLAN_DATA_TO_HELPER);
+ header->header.size = ntohs (size);
+ if (endpoint != 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;
+ }
-static void
-check_fragment_queue(struct Plugin * plugin)
-{
- struct Session * session;
- struct FragmentMessage * fm;
- struct GNUNET_PeerIdentity pid;
-
- struct PendingMessage * pm;
+ return GNUNET_YES;
+}
- if (plugin->pending_fragment_messages < FRAGMENT_QUEUE_SIZE)
- {
- 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);
-
- 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;
-
- sort_fragment_into_queue(plugin, fm);
- plugin->pending_fragment_messages++;
-
- 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);
- }
- }
+/**
+ * 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
+ * @param size size of the whole packet, needed to calculate the time to send the packet
+ * FIXME: 'size' is initialized inconsistently throughout the code (sometimes payload, sometimes everything)
+ * @return GNUNET_YES if there was no error
+ */
+static int
+getWlanHeader (struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame *Header,
+ const struct GNUNET_TRANSPORT_WLAN_MacAddress *to_mac_addr, struct Plugin *plugin,
+ unsigned int size)
+{
+ const int rate = 11000000;
+
+ Header->frame_control = htons (IEEE80211_FC0_TYPE_DATA);
+ Header->addr1 = *to_mac_addr;
+ Header->addr2 = plugin->mac_address;
+ Header->addr3 = mac_bssid_gnunet;
+ Header->duration = GNUNET_htole16 ((size * 1000000) / rate + 290);
+ Header->sequence_control = 0; // FIXME?
+ Header->llc[0] = WLAN_LLC_DSAP_FIELD;
+ Header->llc[1] = WLAN_LLC_SSAP_FIELD;
+ Header->llc[2] = 0; // FIXME?
+ Header->llc[3] = 0; // FIXME?
+ 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
+ * 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
*/
static void
-check_finished_fragment(struct Plugin * plugin, struct FragmentMessage * fm)
+add_message_for_send (void *cls, const struct GNUNET_MessageHeader *hdr)
{
- //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);
-
-#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "Finished sending and got all acks for a fragmented message\n");
-#endif
-
- check_next_fragment_timeout(plugin);
- check_fragment_queue(plugin);
+ struct FragmentMessage *fm = cls;
+ struct FragmentMessage_queue *fmqueue;
+ struct MacEndpoint *endpoint;
+ struct Plugin *plugin;
+ uint16_t size;
- }
+ GNUNET_assert (cls != NULL);
+ endpoint = fm->session->mac;
+ plugin = endpoint->plugin;
+
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Adding fragment of message %p to send, session %p, endpoint %p, type %u\n",
+ fm, fm->session, endpoint, hdr->type);
+ size = sizeof (struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage) + ntohs (hdr->size);
+ fm->radioHeader = GNUNET_malloc (size);
+ getRadiotapHeader (plugin, fm->session->mac, fm->radioHeader, size);
+ getWlanHeader (&fm->radioHeader->frame, &(fm->session->mac->addr), plugin,
+ size);
+ memcpy (&fm->radioHeader[1], hdr, ntohs (hdr->size));
+ // FIXME: yucky allocation structure!
+ 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 set the next fragment number
- * @param fm use this FragmentMessage
+ * We have been notified that gnunet-helper-transport-wlan has written something to stdout.
+ * Handle the output, then reschedule this function to be called again once
+ * more is available.
+ *
+ * @param cls the plugin handle
+ * @param tc the scheduling context
*/
-
-void
-set_next_message_fragment_pos(struct FragmentMessage * fm)
+static void
+wlan_plugin_helper_read (void *cls,
+ const struct GNUNET_SCHEDULER_TaskContext *tc)
{
+ struct Plugin *plugin = cls;
- //check if retransmit is needed
- if (GNUNET_TIME_absolute_get_remaining(fm->next_ack).rel_value == 0)
- {
-
- // be positive and try again later :-D
- fm->next_ack = GNUNET_TIME_relative_to_absolute(get_ack_timeout(fm));
- // find first missing fragment
+ plugin->server_read_task = GNUNET_SCHEDULER_NO_TASK;
- fm->message_pos = 0;
- }
+ if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
+ return;
- //test if ack 0 (or X) was already received
- while (testBit((char*) &fm->ack_bitfield, fm->message_pos) == GNUNET_YES)
- {
- fm->message_pos++;
- }
+ char mybuf[WLAN_MTU + sizeof (struct GNUNET_MessageHeader)];
+ ssize_t bytes;
+ bytes =
+ GNUNET_DISK_file_read (plugin->server_stdout_handle, mybuf,
+ sizeof (mybuf));
+ if (bytes <= 0)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ _
+ ("Finished reading from gnunet-helper-transport-wlan stdout with code: %d\n"),
+ bytes);
+ return;
+ }
+ GNUNET_SERVER_mst_receive (plugin->suid_tokenizer, NULL, mybuf, bytes,
+ GNUNET_NO, GNUNET_NO);
+
+ GNUNET_assert (plugin->server_read_task == GNUNET_SCHEDULER_NO_TASK);
+ plugin->server_read_task =
+ GNUNET_SCHEDULER_add_read_file (GNUNET_TIME_UNIT_FOREVER_REL,
+ plugin->server_stdout_handle,
+ &wlan_plugin_helper_read, plugin);
}
-void
-send_hello_beacon(struct Plugin * plugin)
+/**
+ * Start the gnunet-helper-transport-wlan process.
+ *
+ * @param plugin the transport plugin
+ * @return GNUNET_YES if process was started, GNUNET_SYSERR on error
+ */
+static int
+wlan_transport_start_wlan_helper (struct Plugin *plugin)
{
+ const char *filenamehw = "gnunet-helper-transport-wlan";
+ const char *filenameloopback = "gnunet-helper-transport-wlan-dummy";
+ char *absolute_filename = NULL;
-#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Sending hello beacon\n");
-#endif
+ if (plugin->helper_is_running == GNUNET_YES)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "wlan_transport_start_wlan_helper not needed, helper already running!");
+ return GNUNET_YES;
+ }
- uint16_t size = 0;
- ssize_t bytes;
- struct GNUNET_MessageHeader * msgheader = NULL;
- struct IeeeHeader * ieeewlanheader = NULL;
- struct RadiotapHeader * radioHeader = NULL;
- struct GNUNET_MessageHeader * msgheader2 = NULL;
+ plugin->server_stdout = GNUNET_DISK_pipe (GNUNET_YES, GNUNET_YES, GNUNET_NO, GNUNET_YES);
+ if (plugin->server_stdout == NULL)
+ return GNUNET_SYSERR;
+
+ plugin->server_stdin = GNUNET_DISK_pipe (GNUNET_YES, GNUNET_YES, GNUNET_YES, GNUNET_NO);
+ if (plugin->server_stdin == NULL)
+ return GNUNET_SYSERR;
- 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));
+ if ((plugin->testmode == 1) || (plugin->testmode == 2))
+ {
+ if (GNUNET_OS_check_helper_binary (filenameloopback) == GNUNET_YES)
+ {
+ absolute_filename = GNUNET_strdup (filenameloopback);
+ }
+ else
+ {
+ char cwd[FILENAME_MAX];
- msgheader = GNUNET_malloc(size);
- msgheader->size = htons(size);
- msgheader->type = htons(GNUNET_MESSAGE_TYPE_WLAN_HELPER_DATA);
+ GNUNET_assert (getcwd (cwd, sizeof (cwd)) != NULL);
- radioHeader = (struct RadiotapHeader*) &msgheader[1];
- getRadiotapHeader(radioHeader);
- ieeewlanheader = (struct IeeeHeader*) &radioHeader[1];
- getWlanHeader(ieeewlanheader, bc_all_mac, plugin);
+ GNUNET_asprintf (&absolute_filename, "%s%s%s", cwd, DIR_SEPARATOR_STR,
+ filenameloopback);
- msgheader2 = (struct GNUNET_MessageHeader*) &ieeewlanheader[1];
- msgheader2->size = htons(GNUNET_HELLO_size(*(plugin->env->our_hello))
- + sizeof(struct GNUNET_MessageHeader));
+ if (GNUNET_DISK_file_test (filenameloopback) != GNUNET_YES)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, PLUGIN_LOG_NAME,
+ "Helper `%s' not found! %i\n", absolute_filename);
+ GNUNET_break (0);
+ }
+ }
+ }
- msgheader2->type = htons(GNUNET_MESSAGE_TYPE_WLAN_ADVERTISEMENT);
- memcpy(&msgheader2[1], *plugin->env->our_hello, GNUNET_HELLO_size(
- *(plugin->env->our_hello)));
+ /* Start the server process */
- bytes = GNUNET_DISK_file_write(plugin->server_stdin_handle, msgheader, size);
+ if (plugin->testmode == 0)
+ {
- if (bytes == GNUNET_SYSERR)
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Starting gnunet-helper-transport-wlan process cmd: %s %s %i\n",
+ filenamehw, plugin->interface, plugin->testmode);
+ if (GNUNET_OS_check_helper_binary (filenamehw) == GNUNET_YES)
{
- GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
- _("Error writing to wlan healper. errno == %d, ERROR: %s\n"),
- errno, strerror(errno));
-
+ plugin->server_proc =
+ GNUNET_OS_start_process (GNUNET_NO, plugin->server_stdin, plugin->server_stdout,
+ filenamehw, filenamehw, plugin->interface,
+ NULL);
+ }
+ else if (GNUNET_OS_check_helper_binary (filenamehw) == GNUNET_NO)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, PLUGIN_LOG_NAME,
+ "gnunet-helper-transport-wlan is not suid, please change it or look at the doku\n");
+ GNUNET_break (0);
+ }
+ else
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, PLUGIN_LOG_NAME,
+ "gnunet-helper-transport-wlan not found, please look if it exists and is the $PATH variable!\n");
+ GNUNET_break (0);
}
- GNUNET_assert(bytes != GNUNET_SYSERR);
- GNUNET_assert(bytes == size);
- GNUNET_free(msgheader);
-
- set_next_beacon_time(plugin);
- check_next_fragment_timeout(plugin);
-}
-static void
-send_ack(struct Plugin * plugin, struct AckSendQueue * ack)
-{
+ }
+ else if (plugin->testmode == 1)
+ {
+
+ GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, PLUGIN_LOG_NAME,
+ "Starting gnunet-helper-transport-wlan-dummy loopback 1 process cmd: %s %s %i\n",
+ absolute_filename, plugin->interface, plugin->testmode);
+ plugin->server_proc =
+ GNUNET_OS_start_process (GNUNET_NO, plugin->server_stdin, plugin->server_stdout,
+ absolute_filename, absolute_filename, "1",
+ NULL);
+ if (plugin->server_proc == NULL)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, PLUGIN_LOG_NAME,
+ "`%s' not found, please look if it exists and is in the $PATH variable!\n",
+ absolute_filename);
+ GNUNET_break (0);
+ }
+ }
+ else if (plugin->testmode == 2)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, PLUGIN_LOG_NAME,
+ "Starting gnunet-helper-transport-wlan-dummy loopback 2 process cmd: %s %s %i\n",
+ absolute_filename, plugin->interface, plugin->testmode);
+ plugin->server_proc =
+ GNUNET_OS_start_process (GNUNET_NO, plugin->server_stdin, plugin->server_stdout,
+ absolute_filename, absolute_filename, "2",
+ NULL);
+ if (plugin->server_proc == NULL)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, PLUGIN_LOG_NAME,
+ "`%s' not found, please look if it exists and is in the $PATH variable!\n",
+ absolute_filename);
+ GNUNET_break (0);
+ }
+ }
+ if (absolute_filename != NULL)
+ GNUNET_free (absolute_filename);
+ if (plugin->server_proc == NULL)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Failed to start gnunet-helper-transport-wlan process\n");
+ return GNUNET_SYSERR;
+ }
- uint16_t size = 0;
- ssize_t bytes;
- struct GNUNET_MessageHeader * msgheader = NULL;
- struct IeeeHeader * ieeewlanheader = NULL;
- struct RadiotapHeader * radioHeader = NULL;
- struct FragmentationAckHeader * msgheader2 = NULL;
- GNUNET_assert(sizeof(struct FragmentationAckHeader) <= WLAN_MTU);
-#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
+ /* Close the write end of the read pipe */
+ GNUNET_DISK_pipe_close_end (plugin->server_stdout,
+ GNUNET_DISK_PIPE_END_WRITE);
- size = sizeof(struct GNUNET_MessageHeader) + sizeof(struct RadiotapHeader)
- + sizeof(struct IeeeHeader) + sizeof(struct FragmentationAckHeader);
- msgheader = GNUNET_malloc(size);
- msgheader->size = htons(size);
- msgheader->type = htons(GNUNET_MESSAGE_TYPE_WLAN_HELPER_DATA);
+ /* Close the read end of the write pipe */
+ GNUNET_DISK_pipe_close_end (plugin->server_stdin, GNUNET_DISK_PIPE_END_READ);
- radioHeader = (struct RadiotapHeader*) &msgheader[1];
- getRadiotapHeader(radioHeader);
- ieeewlanheader = (struct IeeeHeader*) &radioHeader[1];
- getWlanHeader(ieeewlanheader, ack->session->addr, plugin);
+ plugin->server_stdout_handle =
+ GNUNET_DISK_pipe_handle (plugin->server_stdout,
+ GNUNET_DISK_PIPE_END_READ);
+ plugin->server_stdin_handle =
+ GNUNET_DISK_pipe_handle (plugin->server_stdin,
+ GNUNET_DISK_PIPE_END_WRITE);
- 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);
+ GNUNET_assert (plugin->server_read_task == GNUNET_SCHEDULER_NO_TASK);
- 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_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Adding server_read_task for the gnunet-helper-transport-wlan\n");
+ plugin->server_read_task =
+ GNUNET_SCHEDULER_add_read_file (GNUNET_TIME_UNIT_FOREVER_REL,
+ plugin->server_stdout_handle,
+ &wlan_plugin_helper_read, plugin);
- }
- GNUNET_assert(bytes != GNUNET_SYSERR);
- GNUNET_assert(bytes == size);
- GNUNET_free(msgheader);
- check_next_fragment_timeout(plugin);
+ plugin->helper_is_running = GNUNET_YES;
+ return GNUNET_YES;
}
/**
- * Function called when wlan helper is ready to get some data
+ * Stops the gnunet-helper-transport-wlan process.
*
- * @param cls closure
- * @param tc GNUNET_SCHEDULER_TaskContext
+ * @param plugin the transport plugin
+ * @return GNUNET_YES if process was started, GNUNET_SYSERR on error
*/
-
-static void
-do_transmit(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+static int
+wlan_transport_stop_wlan_helper (struct Plugin *plugin)
{
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Stoping WLAN helper process\n");
- struct Plugin * plugin = cls;
- plugin->server_write_task = GNUNET_SCHEDULER_NO_TASK;
+ if (plugin->helper_is_running == GNUNET_NO)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "wlan_transport_stop_wlan_helper not needed, helper already stopped!");
+ return GNUNET_YES;
+ }
- if (tc->reason == GNUNET_SCHEDULER_REASON_SHUTDOWN)
- return;
+ 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;
+ }
+
+ GNUNET_DISK_pipe_close (plugin->server_stdout);
+ GNUNET_DISK_pipe_close (plugin->server_stdin);
+ GNUNET_OS_process_kill (plugin->server_proc, SIGKILL);
+ GNUNET_OS_process_wait (plugin->server_proc);
+ GNUNET_OS_process_close (plugin->server_proc);
+
+ plugin->helper_is_running = GNUNET_NO;
- 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 AckSendQueue * ack;
- uint16_t size = 0;
- ssize_t bytes;
- const char * copystart = NULL;
- uint16_t copysize = 0;
- uint copyoffset = 0;
+ return GNUNET_YES;
+}
- if (plugin->ack_send_queue_head != NULL)
- {
- ack = plugin->ack_send_queue_head;
- GNUNET_CONTAINER_DLL_remove(plugin->ack_send_queue_head,
- plugin->ack_send_queue_tail, ack);
- send_ack(plugin, ack);
- GNUNET_free(ack);
- return;
- }
-
- //test if a "hello-beacon" has to be send
- if (GNUNET_TIME_absolute_get_remaining(plugin->beacon_time).rel_value == 0)
- {
- send_hello_beacon(plugin);
+/**
+ * function for delayed restart of the helper process
+ * @param cls Finish_send struct if message should be finished
+ * @param tc TaskContext
+ */
+static void
+delay_restart_helper (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ struct Finish_send *finish = cls;
+ struct Plugin *plugin;
- return;
+ plugin = finish->plugin;
- }
+ plugin->server_write_task = GNUNET_SCHEDULER_NO_TASK;
+ if (0 != (GNUNET_SCHEDULER_REASON_SHUTDOWN & tc->reason))
+ {
+ GNUNET_free_non_null (finish->msgstart);
+ GNUNET_free (finish);
+ return;
+ }
- fm = plugin->pending_Fragment_Messages_head;
- if (fm != NULL)
- {
- session = fm->session;
- GNUNET_assert(session != NULL);
+ wlan_transport_start_wlan_helper (plugin);
- // 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");
-#endif
+ if (finish->size != 0)
+ {
+ plugin->server_write_task =
+ GNUNET_SCHEDULER_add_write_file (GNUNET_TIME_UNIT_FOREVER_REL,
+ plugin->server_stdin_handle,
+ &finish_sending, finish);
+ }
+ else
+ {
+ set_next_send (plugin);
+ GNUNET_free_non_null (finish->msgstart);
+ GNUNET_free (finish);
+ }
- check_fragment_queue(plugin);
- free_fragment_message(plugin, fm);
+}
- }
- else
- {
+/**
+ * Function to restart the helper
+ * @param plugin pointer to the global plugin struct
+ * @param finish pointer to the Finish_send struct to finish
+ */
+static void
+restart_helper (struct Plugin *plugin, struct Finish_send *finish)
+{
+ static struct GNUNET_TIME_Relative next_try = { 1000 };
+ GNUNET_assert (finish != NULL);
- //if (fm->message_size > WLAN_MTU)
- // {
- size += sizeof(struct FragmentationHeader);
+ wlan_transport_stop_wlan_helper (plugin);
+ plugin->server_write_task =
+ GNUNET_SCHEDULER_add_delayed (next_try, &delay_restart_helper, finish);
+ GNUNET_TIME_relative_multiply (next_try, HELPER_RESTART_SCALING_FACTOR);
- set_next_message_fragment_pos(fm);
+}
- copyoffset = (WLAN_MTU - sizeof(struct FragmentationHeader))
- * fm->message_pos;
+/**
+ * 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;
-#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
+ plugin = finish->plugin;
+ plugin->server_write_task = GNUNET_SCHEDULER_NO_TASK;
- 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);
+ 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->head_of_next_write, finish->size);
- GNUNET_free(msgheader);
- check_next_fragment_timeout(plugin);
- }
+ if (bytes != finish->size)
+ {
+ if (bytes != GNUNET_SYSERR)
+ {
+ finish->head_of_next_write += bytes;
+ 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
+ {
+ restart_helper (plugin, finish);
+ }
+ }
+ else
+ {
+ GNUNET_free (finish->msgstart);
+ GNUNET_free (finish);
+ set_next_send (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);
+/**
+ * function to send a hello beacon
+ * @param plugin pointer to the plugin struct
+ */
+static void
+send_hello_beacon (struct Plugin *plugin)
+{
+ uint16_t size;
+ ssize_t bytes;
+ uint16_t hello_size;
+ struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage *radioHeader;
+ const struct GNUNET_MessageHeader *hello;
+ struct Finish_send *finish;
+
+ GNUNET_assert (plugin != NULL);
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Sending hello beacon\n");
+ GNUNET_STATISTICS_update (plugin->env->stats, _("# wlan hello beacons send"),
+ 1, GNUNET_NO);
+ hello = plugin->env->get_our_hello ();
+ hello_size = GNUNET_HELLO_size ((struct GNUNET_HELLO_Message *) hello);
+ GNUNET_assert (sizeof (struct WlanHeader) + hello_size <= WLAN_MTU);
+
+ size = sizeof (struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage) + hello_size;
+ radioHeader = GNUNET_malloc (size);
+ getRadiotapHeader (plugin, NULL, radioHeader, size);
+ getWlanHeader (&radioHeader->frame, &bc_all_mac, plugin, size);
+ memcpy (&radioHeader[1], hello, hello_size);
+ bytes = GNUNET_DISK_file_write (plugin->server_stdin_handle, radioHeader, size);
+ GNUNET_free (radioHeader);
+ if (bytes == GNUNET_SYSERR)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, PLUGIN_LOG_NAME,
+ _
+ ("Error writing to wlan helper. errno == %d, ERROR: %s\n"),
+ errno, strerror (errno));
+ finish = GNUNET_malloc (sizeof (struct Finish_send));
+ finish->plugin = plugin;
+ finish->head_of_next_write = NULL;
+ finish->size = 0;
+ finish->msgstart = NULL;
+ restart_helper (plugin, finish);
+ set_next_beacon_time (plugin);
+ }
+ else
+ {
+ GNUNET_assert (bytes == size);
+ set_next_beacon_time (plugin);
+ set_next_send (plugin);
+ }
+}
- 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);
- }
+/**
+ * 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
+add_ack_for_send (void *cls, uint32_t msg_id,
+ const struct GNUNET_MessageHeader *hdr)
+{
+ struct MacEndpoint *endpoint = cls;
+ struct Plugin *plugin = endpoint->plugin;
+ struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage* radioHeader;
+ struct AckSendQueue *ack;
+ struct GNUNET_MessageHeader *msgheader;
+ uint16_t size;
- }
- return;
- }
- GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
- "do_transmit did nothing, should not happen!\n");
+ GNUNET_assert (endpoint != NULL);
+ size = sizeof (struct AckSendQueue) + sizeof (struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage) + ntohs (hdr->size);
+ ack = GNUNET_malloc (size);
+ ack->message_id = msg_id;
+ ack->endpoint = endpoint;
+ radioHeader = (struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage*) &ack[1];
+ ack->radioHeader = radioHeader;
+ getRadiotapHeader (plugin, ack->endpoint, radioHeader, size - sizeof (struct AckSendQueue));
+ size = ntohs (hdr->size);
+ getWlanHeader (&radioHeader->frame,
+ &ack->endpoint->addr,
+ plugin,
+ size);
+ msgheader = (struct GNUNET_MessageHeader *) &radioHeader[1];
+ memcpy (msgheader, hdr, size);
+ GNUNET_CONTAINER_DLL_insert_tail (plugin->ack_send_queue_head,
+ plugin->ack_send_queue_tail, ack);
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Adding ack with message id %u to send, AckSendQueue %p, endpoint %p\n",
+ msg_id, ack, endpoint);
+ set_next_send (plugin);
}
+
+/**
+ * Function for the scheduler if a FragmentMessage times out
+ * @param cls pointer to the FragmentMessage
+ * @param tc pointer to the GNUNET_SCHEDULER_TaskContext
+ */
static void
-finish_sending(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+fragmentmessage_timeout (void *cls,
+ const struct GNUNET_SCHEDULER_TaskContext *tc)
{
- struct Finish_send * finish;
- struct Plugin * plugin;
- ssize_t bytes;
+ struct FragmentMessage *fm = cls;
- finish = cls;
- plugin = finish->plugin;
+ GNUNET_assert (fm != NULL);
+ fm->timeout_task = GNUNET_SCHEDULER_NO_TASK;
+ if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
+ return;
+ free_fragment_message (fm->session->mac->plugin, fm);
+}
- plugin->server_write_task = GNUNET_SCHEDULER_NO_TASK;
+/**
+ * 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;
- bytes = GNUNET_DISK_file_write(plugin->server_stdin_handle,
- finish->msgheader, finish->size);
- GNUNET_assert(bytes != GNUNET_SYSERR);
+ struct PendingMessage *pm;
- GNUNET_assert(plugin->server_write_task == GNUNET_SCHEDULER_NO_TASK);
- if (bytes != finish->size)
+ if (plugin->pending_Fragment_Messages < FRAGMENT_QUEUE_SIZE)
+ {
+ session = get_next_queue_session (plugin);
+ if (session != NULL)
{
+ pm = session->pending_message_head;
+ GNUNET_assert (pm != NULL);
+ 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_STATISTICS_set (plugin->env->stats, _("# wlan pending fragments"),
+ plugin->pending_Fragment_Messages, GNUNET_NO);
+
+ fm = GNUNET_malloc (sizeof (struct FragmentMessage));
+ fm->session = session;
+ fm->timeout.abs_value = pm->timeout.abs_value;
+ 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);
+ fm->timeout_task =
+ GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_absolute_get_remaining
+ (fm->timeout), fragmentmessage_timeout,
+ 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);
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "called pm->transmit_cont for %p\n", session);
+ }
+ else
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "no pm->transmit_cont for %p\n", session);
+ }
+ GNUNET_free (pm);
+
+ if (session->pending_message_head != NULL)
+ {
+ //requeue session
+ queue_session (plugin, session);
+ }
- 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_free(finish->msgstart);
- GNUNET_free(finish);
- check_next_fragment_timeout(plugin);
}
+ }
+ //check if timeout changed
+ set_next_send (plugin);
}
-int
-getRadiotapHeader(struct RadiotapHeader * Header)
+
+/**
+ * Function to send an ack, does not free the ack
+ * @param plugin pointer to the plugin
+ */
+static void
+send_ack (struct Plugin *plugin)
{
- return GNUNET_YES;
+ ssize_t bytes;
+ struct AckSendQueue *ack;
+ struct Finish_send *finish;
+
+ GNUNET_assert (plugin != NULL);
+ ack = plugin->ack_send_queue_head;
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Sending ack for message_id %u for mac endpoint %p, size %u\n",
+ ack->message_id, ack->endpoint,
+ ntohs (ack->radioHeader->header.size));
+ GNUNET_STATISTICS_update (plugin->env->stats, _("# wlan acks send"), 1,
+ GNUNET_NO);
+ bytes =
+ GNUNET_DISK_file_write (plugin->server_stdin_handle, ack->radioHeader,
+ ntohs (ack->radioHeader->header.size));
+ if (bytes == GNUNET_SYSERR)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, PLUGIN_LOG_NAME,
+ _
+ ("Error writing to wlan helper. errno == %d, ERROR: %s\n"),
+ errno, strerror (errno));
+ finish = GNUNET_malloc (sizeof (struct Finish_send));
+ finish->plugin = plugin;
+ finish->head_of_next_write = NULL;
+ finish->size = 0;
+ finish->msgstart = NULL;
+ restart_helper (plugin, finish);
+ return;
+ }
+ GNUNET_assert (bytes == ntohs (ack->radioHeader->header.size));
+ GNUNET_CONTAINER_DLL_remove (plugin->ack_send_queue_head,
+ plugin->ack_send_queue_tail, ack);
+ GNUNET_free (ack);
+ set_next_send (plugin);
}
-;
+
/**
- * 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
+ * Function called when wlan helper is ready to get some data
+ *
+ * @param cls closure
+ * @param tc GNUNET_SCHEDULER_TaskContext
*/
-
-int
-getWlanHeader(struct IeeeHeader * Header, const char * const to_mac_addr,
- struct Plugin * plugin)
+static void
+do_transmit (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
- memcpy(&Header->mac3, mac_bssid, sizeof(mac_bssid));
- memcpy(&Header->mac2, plugin->mac_address.mac, sizeof(plugin->mac_address));
- memcpy(&Header->mac1, to_mac_addr, sizeof(plugin->mac_address));
- return GNUNET_YES;
+ struct Plugin *plugin = cls;
+ struct Session *session;
+ struct FragmentMessage *fm;
+ struct Finish_send *finish;
+ struct FragmentMessage_queue *fmq;
+ ssize_t bytes;
+
+ GNUNET_assert (plugin != NULL);
+ plugin->server_write_task = GNUNET_SCHEDULER_NO_TASK;
+ if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
+ return;
+ if (plugin->ack_send_queue_head != NULL)
+ {
+ send_ack (plugin);
+ return;
+ }
+ //test if a "hello-beacon" has to be send
+ if (GNUNET_TIME_absolute_get_remaining (plugin->beacon_time).rel_value == 0)
+ {
+ send_hello_beacon (plugin);
+ return;
+ }
+ if (NULL == plugin->sending_messages_head)
+ {
+ /* nothing to do right now, check when to go again */
+ set_next_send (plugin);
+ return;
+ }
+ GNUNET_STATISTICS_update (plugin->env->stats, _("# wlan fragments send"), 1,
+ GNUNET_NO);
+
+ 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);
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Sending GNUNET_MESSAGE_TYPE_WLAN_FRAGMENT for fragment message %p, size: %u\n",
+ fm, ntohs (fm->radioHeader->header.size));
+ bytes =
+ GNUNET_DISK_file_write (plugin->server_stdin_handle,
+ fm->radioHeader,
+ ntohs (fm->radioHeader->header.size));
+ if (bytes != ntohs (fm->radioHeader->header.size))
+ {
+ finish = GNUNET_malloc (sizeof (struct Finish_send));
+ finish->plugin = plugin;
+ finish->msgstart = &fm->radioHeader->header;
+ GNUNET_assert (plugin->server_write_task == GNUNET_SCHEDULER_NO_TASK);
+ if (bytes == GNUNET_SYSERR)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, PLUGIN_LOG_NAME,
+ _
+ ("Error writing to wlan helper. errno == %d, ERROR: %s\n"),
+ errno, strerror (errno));
+ finish->head_of_next_write = (char*) fm->radioHeader;
+ finish->size = ntohs (fm->radioHeader->header.size);
+ restart_helper (plugin, finish);
+ }
+ else
+ {
+ finish->head_of_next_write = ((char*) fm->radioHeader) + bytes;
+ finish->size = ntohs (fm->radioHeader->header.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 (fm->radioHeader);
+ fm->radioHeader = NULL;
+ set_next_send (plugin);
+ }
+ GNUNET_FRAGMENT_context_transmission_done (fm->fragcontext);
}
+
/**
- * 32bit CRC
- *
- * @param msgbuf pointer tor the data
- * @param msgbuf_size size of the data
+ * 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.
*
- * @return 32bit crc value
+ * @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
*/
-
-uint32_t
-getcrc32(const char *msgbuf, size_t msgbuf_size)
+static int
+wlan_plugin_address_suggested (void *cls, const void *addr, size_t addrlen)
{
- //TODO calc some crc
- return 0;
+ //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 */
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "wlan_plugin_address_suggested got good address, size %u!\n",
+ addrlen);
+ return GNUNET_OK;
+ }
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "wlan_plugin_address_suggested got bad address, size %u!\n",
+ addrlen);
+ return GNUNET_SYSERR;
}
+
/**
- * 16bit CRC
- *
- * @param msgbuf pointer tor the data
- * @param msgbuf_size size of the data
+ * Creates a new outbound session the transport service will use to send data to the
+ * peer
*
- * @return 16bit crc value
+ * @param cls the plugin
+ * @param address the address
+ * @return the session or NULL of max connections exceeded
*/
-uint16_t
-getcrc16(const char *msgbuf, size_t msgbuf_size)
+static struct Session *
+wlan_plugin_get_session (void *cls,
+ const struct GNUNET_HELLO_Address *address)
{
- //TODO calc some crc
- return 0;
+ struct Plugin *plugin = cls;
+ struct Session * s = NULL;
+
+ GNUNET_assert (plugin != NULL);
+ GNUNET_assert (address != NULL);
+
+ if (GNUNET_OK == wlan_plugin_address_suggested (plugin,
+ address->address,
+ address->address_length))
+ {
+ s = get_session (plugin, address->address, &address->peer);
+ }
+ else
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, PLUGIN_LOG_NAME,
+ _("Wlan Address len %d is wrong\n"), address->address_length);
+ return s;
+ }
+
+ return s;
}
/**
* Function that can be used by the transport service to transmit
- * a message using the plugin.
+ * a message using the plugin. Note that in the case of a
+ * peer disconnecting, the continuation MUST be called
+ * prior to the disconnect notification itself. This function
+ * will be called with this peer's HELLO message to initiate
+ * a fresh connection to another peer.
*
* @param cls closure
- * @param target who should receive this message
- * @param priority how important is the message
+ * @param session which session must be used
* @param msgbuf the message to transmit
* @param msgbuf_size number of bytes in 'msgbuf'
- * @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))
- * @param addrlen length of the address in bytes
- * @param force_address GNUNET_YES if the plugin MUST use the given address,
- * otherwise the plugin may use other addresses or
- * existing connections (if available)
+ * @param priority how important is the message (most plugins will
+ * ignore message priority and just FIFO)
+ * @param to how long to wait at most for the transmission (does not
+ * require plugins to discard the message after the timeout,
+ * just advisory for the desired delay; most plugins will ignore
+ * this as well)
* @param cont continuation to call once the message has
* been transmitted (or if the transport is ready
* for the next transmission call; or if the
- * peer disconnected...)
+ * peer disconnected...); can be NULL
* @param cont_cls closure for cont
* @return number of bytes used (on the physical network, with overheads);
* -1 on hard errors (i.e. address invalid); 0 is a legal value
* and does NOT mean that the message was not transmitted (DV)
*/
static ssize_t
-wlan_plugin_send(void *cls, const struct GNUNET_PeerIdentity * target,
- const char *msgbuf, size_t msgbuf_size, unsigned int priority,
- struct GNUNET_TIME_Relative timeout, struct Session *session,
- const void *addr, size_t addrlen, int force_address,
- GNUNET_TRANSPORT_TransmitContinuation cont, void *cont_cls)
+wlan_plugin_send (void *cls,
+ struct Session *session,
+ const char *msgbuf, size_t msgbuf_size,
+ unsigned int priority,
+ struct GNUNET_TIME_Relative to,
+ GNUNET_TRANSPORT_TransmitContinuation cont, void *cont_cls)
{
- struct Plugin * plugin = cls;
- struct PendingMessage * newmsg = NULL;
- struct WlanHeader * wlanheader = NULL;
-
- //check if msglen > 0
- GNUNET_assert(msgbuf_size > 0);
-
- //get session if needed
- if (session == NULL)
- {
- if (wlan_plugin_address_suggested(plugin, addr, addrlen) == GNUNET_OK)
- {
- session = get_Session(plugin, addr);
- }
- else
- {
- GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
- _("Wlan Address len %d is wrong\n"), addrlen);
- return -1;
- }
- }
-
- //TODO target "problem" not solved
- //if (session->target != NULL){
- // GNUNET_assert(session->target == *target);
- //} else {
- session->target = *target;
- //}
+ struct Plugin *plugin = cls;
+ struct PendingMessage *newmsg;
+ struct WlanHeader *wlanheader;
+ GNUNET_assert (plugin != NULL);
+ GNUNET_assert (session != NULL);
+ GNUNET_assert (msgbuf_size > 0);
//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)
- {
- newmsg = session->pending_message;
- 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",
- 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;
- }
- }
-
- newmsg = GNUNET_malloc(sizeof(struct PendingMessage));
- (newmsg->msg) = GNUNET_malloc(msgbuf_size + sizeof(struct WlanHeader));
- wlanheader = (struct WlanHeader *) newmsg->msg;
+ if (session->pending_message_head != NULL)
+ {
+ newmsg = session->pending_message_head;
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "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->mac->fragment_messages_out_count);
+ }
+
+ newmsg = GNUNET_malloc (sizeof (struct PendingMessage));
+ 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[1], msgbuf, msgbuf_size);
+ wlanheader->header.size = htons (msgbuf_size + sizeof (struct WlanHeader));
+ wlanheader->header.type = htons (GNUNET_MESSAGE_TYPE_WLAN_DATA);
+ memcpy (&(wlanheader->target), &session->target, sizeof (struct GNUNET_PeerIdentity));
+ memcpy (&(wlanheader->source), plugin->env->my_identity,
+ sizeof (struct GNUNET_PeerIdentity));
+ wlanheader->crc = 0;
+ memcpy (&wlanheader[1], msgbuf, msgbuf_size);
+ wlanheader->crc =
+ htonl (GNUNET_CRYPTO_crc32_n
+ ((char *) wlanheader, msgbuf_size + sizeof (struct WlanHeader)));
+
newmsg->transmit_cont = cont;
newmsg->transmit_cont_cls = cont_cls;
- newmsg->timeout = GNUNET_TIME_relative_to_absolute(timeout);
+ newmsg->timeout = GNUNET_TIME_relative_to_absolute (to);
newmsg->timeout.abs_value = newmsg->timeout.abs_value - 500;
- newmsg->message_size = msgbuf_size + sizeof(struct WlanHeader);
+ 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,
- "New message for %p with size (incl wlan header) %u added\n", session,
- newmsg->message_size);
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "New message for %p with size (incl wlan header) %u added\n",
+ session, newmsg->message_size);
+#if DEBUG_WLAN > 1
+ hexdump (msgbuf, GNUNET_MIN (msgbuf_size, 256));
#endif
-
-
//queue session
- queue_Session(plugin, session);
+ queue_session (plugin, session);
- check_fragment_queue(plugin);
+ check_fragment_queue (plugin);
//FIXME not the correct size
return msgbuf_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 endpoint 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 *endpoint)
{
- struct FragmentMessage * fm = session->plugin->pending_Fragment_Messages_head;
- while (fm != NULL)
- {
- if (fm->session == session)
- {
- return fm;
- }
- fm = fm->next;
- }
- return NULL;
+ struct Sessionqueue *sessions;
+ struct Sessionqueue *sessions_next;
+
+ GNUNET_assert (endpoint != NULL);
+
+ sessions = endpoint->sessions_head;
+ while (sessions != NULL)
+ {
+ sessions_next = sessions->next;
+ free_session (plugin, sessions, GNUNET_NO);
+ sessions = sessions_next;
+ }
+
+ GNUNET_CONTAINER_DLL_remove (plugin->mac_head, plugin->mac_tail, endpoint);
+ if (endpoint->timeout_task != GNUNET_SCHEDULER_NO_TASK)
+ {
+ GNUNET_SCHEDULER_cancel (endpoint->timeout_task);
+ endpoint->timeout_task = GNUNET_SCHEDULER_NO_TASK;
+ }
+ plugin->mac_count--;
+ GNUNET_STATISTICS_set (plugin->env->stats, _("# wlan mac endpoints"),
+ plugin->mac_count, GNUNET_NO);
+ GNUNET_free (endpoint);
+
}
/**
- * 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
+ * function to free a session
+ * @param plugin pointer to the plugin
+ * @param queue pointer to the sessionqueue element to free
+ * @param do_free_macendpoint if GNUNET_YES and mac endpoint would be empty, free mac endpoint
*/
-static struct FragmentMessage *
-get_fragment_message_from_session_and_id(struct Session * session,
- uint32_t message_id)
-{
- struct FragmentMessage * fm = session->plugin->pending_Fragment_Messages_head;
- while (fm != NULL)
+static void
+free_session (struct Plugin *plugin, struct Sessionqueue *queue,
+ int do_free_macendpoint)
+{
+ struct Sessionqueue *pendingsession;
+ struct Sessionqueue *pendingsession_tmp;
+ struct PendingMessage *pm;
+ struct MacEndpoint *endpoint;
+ struct FragmentMessage *fm;
+ struct FragmentMessage *fmnext;
+ int check = 0;
+
+ GNUNET_assert (plugin != NULL);
+ 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;
+ pendingsession = pendingsession->next;
+ GNUNET_assert (pendingsession_tmp->content != NULL);
+ if (pendingsession_tmp->content == queue->content)
{
- if ((fm->session == session) && (fm->message_id_out == message_id))
- {
- return fm;
- }
- fm = fm->next;
+ plugin->pendingsessions--;
+ GNUNET_STATISTICS_set (plugin->env->stats, _("# wlan pending sessions"),
+ plugin->pendingsessions, GNUNET_NO);
+ GNUNET_CONTAINER_DLL_remove (plugin->pending_Sessions_head,
+ plugin->pending_Sessions_tail,
+ pendingsession_tmp);
+ GNUNET_free (pendingsession_tmp);
+
+ GNUNET_assert (check == 0);
+ check = 1;
}
- return NULL;
+ }
+
+ endpoint = queue->content->mac;
+ fm = endpoint->sending_messages_head;
+ while (fm != NULL)
+ {
+ fmnext = fm->next;
+ if (fm->session == queue->content)
+ free_fragment_message (plugin, fm);
+ fm = fmnext;
+ }
+
+ // 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);
+ //Check that no ohter session on this endpoint for this session exits
+ GNUNET_assert (search_session (plugin, endpoint, &queue->content->target) ==
+ NULL);
+ if (endpoint->sessions_head == NULL && do_free_macendpoint == GNUNET_YES)
+ {
+ free_macendpoint (plugin, endpoint);
+ //check if no endpoint with the same address exists
+ GNUNET_assert (get_macendpoint (plugin, &endpoint->addr, GNUNET_NO) ==
+ NULL);
+ }
+
+ if (queue->content->timeout_task != GNUNET_SCHEDULER_NO_TASK)
+ {
+ GNUNET_SCHEDULER_cancel (queue->content->timeout_task);
+ queue->content->timeout_task = GNUNET_SCHEDULER_NO_TASK;
+ }
+ GNUNET_free (queue);
+
+ check_fragment_queue (plugin);
}
/**
* @param target peer from which to disconnect
*/
static void
-wlan_plugin_disconnect(void *cls, const struct GNUNET_PeerIdentity *target)
+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)
+ {
+ queue = endpoint->sessions_head;
+ endpoint_next = endpoint->next;
+ while (queue != NULL)
{
// content is never NULL
GNUNET_assert (queue->content != NULL);
- if (memcmp(target, &(queue->content->target),
- sizeof(struct GNUNET_PeerIdentity)) == 0)
- {
- //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)
- {
- free_receive_message(plugin, receive_queue);
- receive_queue = get_receive_message_from_session(plugin,
- queue->content);
- }
-
- // 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;
- }
+ queue_next = queue->next;
+ if (memcmp
+ (target, &(queue->content->target),
+ sizeof (struct GNUNET_PeerIdentity)) == 0)
+ {
+ free_session (plugin, queue, GNUNET_YES);
+ }
// try next
- queue = queue->next;
+ queue = queue_next;
}
+ endpoint = endpoint_next;
+ }
}
/**
* @param asc_cls closure for asc
*/
static void
-wlan_plugin_address_pretty_printer(void *cls, const char *type,
- const void *addr, size_t addrlen, int numeric,
- struct GNUNET_TIME_Relative timeout,
- GNUNET_TRANSPORT_AddressStringCallback asc, void *asc_cls)
+wlan_plugin_address_pretty_printer (void *cls, const char *type,
+ const void *addr, size_t addrlen,
+ int numeric,
+ struct GNUNET_TIME_Relative timeout,
+ GNUNET_TRANSPORT_AddressStringCallback asc,
+ void *asc_cls)
{
- char ret[92];
- const unsigned char * input;
+ char *ret;
+ const unsigned char *input;
//GNUNET_assert(cls !=NULL);
- if (addrlen != 6)
- {
- /* invalid address (MAC addresses have 6 bytes) */
- GNUNET_break (0);
- asc(asc_cls, NULL);
- return;
- }
- input = (const unsigned char*) addr;
- GNUNET_snprintf(ret, sizeof(ret),
- "%s Mac-Address %.2X:%.2X:%.2X:%.2X:%.2X:%.2X", PROTOCOL_PREFIX,
- input[0], input[1], input[2], input[3], input[4], input[5]);
- asc(asc_cls, ret);
+ if (addrlen != sizeof (struct GNUNET_TRANSPORT_WLAN_MacAddress))
+ {
+ /* invalid address (MAC addresses have 6 bytes) */
+ //GNUNET_break (0);
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Func wlan_plugin_address_pretty_printer got size: %u, worng size!\n",
+ addrlen);
+ asc (asc_cls, NULL);
+ return;
+ }
+ input = (const unsigned char *) addr;
+ GNUNET_asprintf (&ret,
+ "Transport %s: %s Mac-Address %.2X:%.2X:%.2X:%.2X:%.2X:%.2X",
+ type, PROTOCOL_PREFIX, input[0], input[1], input[2],
+ input[3], input[4], input[5]);
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Func wlan_plugin_address_pretty_printer got size: %u, nummeric %u, type %s; made string: %s\n",
+ addrlen, numeric, type, ret);
+ asc (asc_cls, ret);
+ //only one mac address per plugin
+ asc (asc_cls, NULL);
}
+
+
/**
- * 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
+ * handels the data after all fragments are put together
+ * @param cls macendpoint this messages belongs to
+ * @param hdr pointer to the data
*/
-
-static int
-wlan_plugin_address_suggested(void *cls, const void *addr, size_t addrlen)
+static void
+wlan_data_message_handler (void *cls, const struct GNUNET_MessageHeader *hdr)
{
- //struct Plugin *plugin = cls;
+ struct MacEndpoint *endpoint = (struct MacEndpoint *) cls;
+ struct Plugin *plugin = endpoint->plugin;
+ struct WlanHeader *wlanheader;
+ struct Session *session;
- /* check if the address is plausible; if so,
- add it to our list! */
+ const struct GNUNET_MessageHeader *temp_hdr;
+ struct GNUNET_PeerIdentity tmpsource;
+ int crc;
- GNUNET_assert(cls !=NULL);
- //FIXME mitm is not checked
- //Mac Address has 6 bytes
- if (addrlen == 6)
+ GNUNET_assert (plugin != NULL);
+
+ if (ntohs (hdr->type) == GNUNET_MESSAGE_TYPE_WLAN_DATA)
+ {
+
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Func wlan_data_message_handler got GNUNET_MESSAGE_TYPE_WLAN_DATA size: %u\n",
+ ntohs (hdr->size));
+
+ if (ntohs (hdr->size) <
+ sizeof (struct WlanHeader) + sizeof (struct GNUNET_MessageHeader))
{
- /* TODO check for bad addresses like multicast, broadcast, etc */
- return GNUNET_OK;
+ //packet not big enought
+ return;
}
- else
+
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ _("# wlan whole messages received"), 1,
+ GNUNET_NO);
+ wlanheader = (struct WlanHeader *) hdr;
+
+ session = search_session (plugin, endpoint, &wlanheader->source);
+
+ temp_hdr = (const struct GNUNET_MessageHeader *) &wlanheader[1];
+ crc = ntohl (wlanheader->crc);
+ wlanheader->crc = 0;
+ if (GNUNET_CRYPTO_crc32_n
+ ((char *) wlanheader, ntohs (wlanheader->header.size)) != crc)
{
- return GNUNET_SYSERR;
+ //wrong crc, dispose message
+ GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, PLUGIN_LOG_NAME,
+ "Wlan message header crc was wrong: %u != %u\n",
+ GNUNET_CRYPTO_crc32_n ((char *) wlanheader,
+ ntohs (wlanheader->header.size)),
+ crc);
+ hexdump ((void *) hdr, ntohs (hdr->size));
+ return;
}
- return GNUNET_SYSERR;
-}
+ //if not in session list
+ if (session == NULL)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "WLAN client not in session list: packet size = %u, inner size = %u, header size = %u\n",
+ ntohs (wlanheader->header.size), ntohs (temp_hdr->size),
+ sizeof (struct WlanHeader));
+ //try if it is a hello message
+ if (ntohs (wlanheader->header.size) >=
+ ntohs (temp_hdr->size) + sizeof (struct WlanHeader))
+ {
+ if (ntohs (temp_hdr->type) == GNUNET_MESSAGE_TYPE_HELLO)
+ {
+ if (GNUNET_HELLO_get_id
+ ((const struct GNUNET_HELLO_Message *) temp_hdr,
+ &tmpsource) == GNUNET_OK)
+ {
+ session = create_session (plugin, endpoint, &tmpsource);
+ }
+ else
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, PLUGIN_LOG_NAME,
+ "WLAN client not in session list and hello message is not okay\n");
+ return;
+ }
-/**
- * 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)
+ }
+ else
{
- //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);
+ GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, PLUGIN_LOG_NAME,
+ "WLAN client not in session list and not a hello message\n");
return;
}
- rec_queue = rec_queue->next;
+ }
+ else
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, PLUGIN_LOG_NAME,
+ "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;
+ }
}
- //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 plugin pointer to the plugin struct
- * @param rec_message pointer to the struct holding the message which should be freed
- */
-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;
+ //"receive" the message
- while (rec_queue != NULL)
+ if (memcmp
+ (&wlanheader->source, &session->target,
+ sizeof (struct GNUNET_PeerIdentity)) != 0)
{
- rec_queue2 = rec_queue;
- rec_queue = rec_queue->next;
- GNUNET_free(rec_queue2);
+ //wrong peer id
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "WLAN peer source id doesn't match packet peer source id: session %p\n",
+ session);
+ return;
}
- 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
- * @param rec_message pointer to the message that should be checked
- */
-
-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)
+ if (memcmp
+ (&wlanheader->target, plugin->env->my_identity,
+ sizeof (struct GNUNET_PeerIdentity)) != 0)
{
+ //wrong peer id
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "WLAN peer target id doesn't match our peer id: session %p\n",
+ session);
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
+ GNUNET_SERVER_mst_receive (plugin->data_tokenizer, session,
+ (const char *) temp_hdr,
+ ntohs (hdr->size) - sizeof (struct WlanHeader),
+ GNUNET_YES, GNUNET_NO);
- //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);
- }
- }
+ return;
+ }
+ else
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, PLUGIN_LOG_NAME,
+ "wlan_data_message_handler got wrong message type: %u\n",
+ ntohs (hdr->size));
+ return;
+ }
}
+/**
+ * function to process the a message, give it to the higher layer
+ * @param cls pointer to the plugin
+ * @param client pointer to the session this message belongs to
+ * @param hdr start of the message
+ */
+//TODO ATS informations
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));
+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_ATS_Information ats[2];
+
+ ats[0].type = htonl (GNUNET_ATS_QUALITY_NET_DISTANCE);
+ ats[0].value = htonl (1);
+ ats[1].type = htonl (GNUNET_ATS_NETWORK_TYPE);
+ ats[1].value = htonl (GNUNET_ATS_NET_WLAN);
+
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "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));
+ plugin->env->receive (plugin->env->cls, &(session->target), hdr,
+ (const struct GNUNET_ATS_Information *) &ats, 2,
+ session, (const char *) &session->mac->addr,
+ sizeof (session->mac->addr));
}
/**
- * handels the data after all fragments are put together
- * @param plugin
- * @param session_light
- * @param hdr pointer to the data
+ * Function used for to process the data received from the wlan interface
+ *
+ * @param cls the plugin handle
+ * @param hdr hdr of the GNUNET_MessageHeader
+ * @param rxinfo pointer to the radiotap informations got with this packet FIXME: give ATS info
*/
static void
-wlan_data_massage_handler(struct Plugin * plugin,
- struct Session_light * session_light,
- const struct GNUNET_MessageHeader * hdr)
+wlan_data_helper (void *cls,
+ const struct GNUNET_MessageHeader *hdr,
+ const struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage *rxinfo)
{
- struct WlanHeader * wlanheader = NULL;
- struct Session * session = NULL;
- const char * tempmsg = NULL;
- const struct GNUNET_MessageHeader * temp_hdr = NULL;
- struct GNUNET_PeerIdentity tmptarget;
+ struct Plugin *plugin = cls;
+ struct FragmentMessage *fm;
+ struct FragmentMessage *fm2;
+ struct GNUNET_PeerIdentity tmpsource;
+ struct MacEndpoint *macendpoint;
+ struct Session *session;
- if (ntohs(hdr->type) == GNUNET_MESSAGE_TYPE_WLAN_DATA)
+ // NOTE: session_light->addr = rxinfo->frame.addr2;
+ macendpoint = get_macendpoint (plugin, &rxinfo->frame.addr2, GNUNET_YES);
+
+ switch (ntohs (hdr->type))
+ {
+ case GNUNET_MESSAGE_TYPE_HELLO:
+ //ADVERTISEMENT
+ //TODO better DOS protection, error handling
+ //TODO test first then create session
+ if (GNUNET_HELLO_get_id
+ ((const struct GNUNET_HELLO_Message *) hdr, &tmpsource) == GNUNET_OK)
{
-
-#if DEBUG_wlan
- GNUNET_log(
- GNUNET_ERROR_TYPE_DEBUG,
- "Func wlan_data_massage_handler got GNUNET_MESSAGE_TYPE_WLAN_DATA size: %u\n",
- ntohs(hdr->size));
-#endif
-
- GNUNET_assert(session_light != NULL);
- if (session_light->session == NULL)
- {
- session_light->session = search_session(plugin, session_light->addr);
- }
- 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))
- {
- //wrong crc, dispose message
- GNUNET_log(GNUNET_ERROR_TYPE_INFO,
- "Wlan message Header crc was wrong\n");
- return;
- }
-
- //if not in session list
+ session = search_session (plugin, macendpoint, &tmpsource);
if (session == NULL)
- {
-#if DEBUG_wlan
- GNUNET_log(
- GNUNET_ERROR_TYPE_DEBUG,
- "WLAN client not in session list: packet size = %u, inner size = %u, header size = %u\n",
- ntohs(wlanheader->header.size), ntohs(temp_hdr->size),
- sizeof(struct WlanHeader));
-#endif
- //try if it is a hello message
- if (ntohs(wlanheader->header.size) >= ntohs(temp_hdr->size)
- + sizeof(struct WlanHeader))
- {
- if (ntohs(temp_hdr->type) == GNUNET_MESSAGE_TYPE_HELLO)
- {
- if (GNUNET_HELLO_get_id(
- (const struct GNUNET_HELLO_Message *) temp_hdr,
- &tmptarget) == GNUNET_OK)
- {
- session = create_session(plugin, session_light->addr);
- session_light->session = session;
- memcpy(&session->target, &tmptarget,
- sizeof(struct GNUNET_PeerIdentity));
- }
- 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;
+ {
+ session = create_session (plugin, macendpoint, &tmpsource);
+ }
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ _("# wlan hello messages received"), 1,
+ GNUNET_NO);
+ plugin->env->receive (plugin->env->cls, &session->target,
+ hdr, NULL, 0, session,
+ (const char *) &session->mac->addr,
+ sizeof (session->mac->addr));
}
- else
+ else
{
- GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
- "wlan_data_massage_handler got wrong message type\n");
+ GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, PLUGIN_LOG_NAME,
+ "WLAN client not in session list and HELLO message is not okay\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 bitfield bitfield to send
- * @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)
+ break;
+ case GNUNET_MESSAGE_TYPE_FRAGMENT:
+ macendpoint = get_macendpoint (plugin, &rxinfo->frame.addr2, GNUNET_YES);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ _("# wlan fragments received"), 1, GNUNET_NO);
+ int ret =
+ GNUNET_DEFRAGMENT_process_fragment (macendpoint->defrag,
+ hdr);
+
+ if (ret == GNUNET_NO)
{
- if (rec_message->session == session)
- {
- return rec_message;
- }
- rec_message = rec_message->next;
+ macendpoint->dups++;
}
- 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_light pointer to the session_light struct of this message
- * @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;
-
- //TODO fragments do not timeout
- //check if message_id is right or it is a new msg
- GNUNET_assert(fh != NULL);
-
- rec_message = get_receive_message(plugin, session, ntohs(fh->message_id));
-
- if (rec_message == NULL)
+ else if (ret == GNUNET_OK)
{
- if (session->fragment_messages_in_count < MESSAGES_IN_QUEUE_PER_SESSION)
- {
-
- //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++;
-
-#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);
-#endif
- }
- 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;
- }
+ macendpoint->fragc++;
}
-
- if (is_double_msg(rec_message, fh) != GNUNET_YES)
+ set_next_send (plugin);
+ break;
+ case GNUNET_MESSAGE_TYPE_FRAGMENT_ACK:
+ if (NULL == macendpoint)
{
-
- //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 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);
-#endif
-
- check_rec_finished_msg(plugin, session_light, session, rec_message);
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Macendpoint does not exist for this GNUNET_MESSAGE_TYPE_FRAGMENT_ACK size: %u; %s\n",
+ ntohs (hdr->size), wlan_plugin_address_to_string (NULL,
+ &rxinfo->frame.addr2.mac,
+ 6));
+ return;
}
- else
+ fm = macendpoint->sending_messages_head;
+ while (fm != NULL)
{
- GNUNET_log(GNUNET_ERROR_TYPE_INFO, "WLAN fragment is a clone\n");
- retval = rec_message->received_fragments;
-
+ fm2 = fm->next;
+ GNUNET_STATISTICS_update (plugin->env->stats, _("# wlan acks received"),
+ 1, GNUNET_NO);
+ int ret = GNUNET_FRAGMENT_process_ack (fm->fragcontext, hdr);
+
+ if (ret == GNUNET_OK)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Got last ack, finished fragment message %p\n", fm);
+ macendpoint->acks++;
+ fm->session->last_activity = GNUNET_TIME_absolute_get ();
+ macendpoint->last_activity = fm->session->last_activity;
+ free_fragment_message (plugin, fm);
+ check_fragment_queue (plugin);
+ return;
+ }
+ if (ret == GNUNET_NO)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Got ack for: %p\n", fm);
+ macendpoint->acks++;
+ return;
+ }
+ fm = fm2;
}
- return retval;
-
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "WLAN fragment not in fragment list\n");
+ return;
+ default:
+ // TODO Wrong data?
+ GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, PLUGIN_LOG_NAME,
+ "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;
+ }
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Helper finished\n");
}
/**
- * Function used for to process the data received from the wlan interface
+ * Function to print mac addresses nicely.
*
- * @param cls the plugin handle
- * @param session_light FIXME: document
- * @param hdr hdr of the GNUNET_MessageHeader
+ * @param mac the mac address
+ * @return string to a static buffer with the human-readable mac, will be overwritten during the next call to this function
*/
-static void
-wlan_data_helper(void *cls, struct Session_light * session_light,
- const struct GNUNET_MessageHeader * hdr)
+static const char *
+macprinter (const struct GNUNET_TRANSPORT_WLAN_MacAddress * mac)
{
- 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;
-
- //ADVERTISEMENT
- if (ntohs(hdr->type) == GNUNET_MESSAGE_TYPE_WLAN_ADVERTISEMENT)
- {
-
- //TODO better DOS protection, error handling
- //TODO test first than create session
- GNUNET_assert(session_light != NULL);
-
-#if DEBUG_wlan
- 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));
-#endif
-
- if (session_light->session == NULL)
- {
- session_light->session = get_Session(plugin, session_light->addr);
- }
- GNUNET_assert(GNUNET_HELLO_get_id(
- (const struct GNUNET_HELLO_Message *) &hdr[1],
- &(session_light->session->target) ) != GNUNET_SYSERR);
-
- }
-
- //FRAGMENT
- else if (ntohs(hdr->type) == GNUNET_MESSAGE_TYPE_WLAN_FRAGMENT)
- {
-
- GNUNET_assert(session_light != NULL);
- if (session_light->session == NULL)
- {
- session_light->session = search_session(plugin, session_light->addr);
- }
- 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));
-#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)
- {
- fragment_bitfield = insert_fragment_in_in_message_queue(plugin,
- session_light, session, fh);
- }
- else
- {
- // 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));
- }
-
- add_ack_for_send(plugin, session, fragment_bitfield, fh);
- check_next_fragment_timeout(plugin);
-
- }
-
- //ACK
- else if (ntohs(hdr->type) == GNUNET_MESSAGE_TYPE_WLAN_FRAGMENT_ACK)
- {
-
-#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));
-#endif
+ static char macstr[20];
- 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)
- {
+ GNUNET_snprintf (macstr, sizeof (macstr), "%2X:%2X:%2X:%2X:%2X:%2X", mac->mac[0], mac->mac[1],
+ mac->mac[2], mac->mac[3], mac->mac[4], mac->mac[5]);
+ return macstr;
+}
- 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;
- }
+/**
+ * Function for the scheduler if a mac endpoint times out
+ * @param cls pointer to the MacEndpoint
+ * @param tc pointer to the GNUNET_SCHEDULER_TaskContext
+ */
+static void
+macendpoint_timeout (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ struct MacEndpoint *endpoint = cls;
- }
+ GNUNET_assert (endpoint != NULL);
+ endpoint->timeout_task = GNUNET_SCHEDULER_NO_TASK;
+ if (tc->reason == GNUNET_SCHEDULER_REASON_SHUTDOWN)
+ {
+ return;
+ }
+ if (GNUNET_TIME_absolute_get_remaining
+ (GNUNET_TIME_absolute_add
+ (endpoint->last_activity, MACENDPOINT_TIMEOUT)).rel_value == 0)
+ {
+ GNUNET_assert (endpoint->plugin != NULL);
+ GNUNET_STATISTICS_update (endpoint->plugin->env->stats,
+ _("# wlan mac endpoints timeouts"), 1, GNUNET_NO);
+ free_macendpoint (endpoint->plugin, endpoint);
+ }
else
- {
- // TODO Wrong data?
- GNUNET_log(GNUNET_ERROR_TYPE_INFO,
- "WLAN packet inside the WLAN helper packet has not the right type\n");
- return;
- }
-
-#if 0
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "Helper finished\n");
-#endif
-
+ {
+ endpoint->timeout_task =
+ GNUNET_SCHEDULER_add_delayed (MACENDPOINT_TIMEOUT, &macendpoint_timeout,
+ endpoint);
+ }
}
-char *
-macprinter(struct MacAddress macx)
-{
- 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]);
- 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 GNUNET_TRANSPORT_WLAN_MacAddress *addr)
+{
+ struct MacEndpoint *newend = GNUNET_malloc (sizeof (struct MacEndpoint));
+
+ GNUNET_assert (plugin != NULL);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ _("# wlan mac endpoints created"), 1, GNUNET_NO);
+ 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);
+ newend->last_activity = GNUNET_TIME_absolute_get ();
+ newend->timeout_task =
+ GNUNET_SCHEDULER_add_delayed (MACENDPOINT_TIMEOUT, &macendpoint_timeout,
+ newend);
+
+ plugin->mac_count++;
+ GNUNET_STATISTICS_set (plugin->env->stats, _("# wlan mac endpoints"),
+ plugin->mac_count, GNUNET_NO);
+ GNUNET_CONTAINER_DLL_insert_tail (plugin->mac_head, plugin->mac_tail, newend);
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "New Mac Endpoint %p: %s\n", newend,
+ wlan_plugin_address_to_string (NULL, newend->addr.mac, 6));
+ return newend;
}
/**
* @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)
+wlan_process_helper (void *cls, void *client,
+ const struct GNUNET_MessageHeader *hdr)
{
struct Plugin *plugin = cls;
- struct IeeeHeader * wlanIeeeHeader = NULL;
- struct Session_light * session_light = NULL;
- const struct GNUNET_MessageHeader * temp_hdr = NULL;
-
+ const struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage *rxinfo;
+ const struct GNUNET_TRANSPORT_WLAN_HelperControlMessage *cm;
+ const struct GNUNET_MessageHeader *temp_hdr = NULL;
+ const char *end;
int datasize = 0;
- int pos = 0;
-
- if (ntohs(hdr->type) == GNUNET_MESSAGE_TYPE_WLAN_HELPER_DATA)
+ int pos;
+
+ GNUNET_assert (plugin != NULL);
+ switch (ntohs (hdr->type))
+ {
+ case GNUNET_MESSAGE_TYPE_WLAN_DATA_FROM_HELPER:
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Got data message from helper with %u bytes\n",
+ ntohs (hdr->size));
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ _("# wlan data messages received"), 1,
+ GNUNET_NO);
+ //call wlan_process_helper with the message inside, later with wlan: analyze signal
+ if (ntohs (hdr->size) < sizeof (struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage))
{
-#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));
-#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];
-
- //process only if it is an broadcast or for this computer both with the gnunet bssid
-
- //check for bssid
- if (memcmp(&(wlanIeeeHeader->mac3), mac_bssid, 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)
- {
-
- // process the inner data
-
-
- datasize = ntohs(hdr->size) - sizeof(struct IeeeHeader)
- - sizeof(struct GNUNET_MessageHeader);
-
- session_light = GNUNET_malloc(sizeof(struct Session_light));
- memcpy(session_light->addr, &(wlanIeeeHeader->mac2),
- 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;
-
- wlan_data_helper(plugin, session_light, temp_hdr);
- pos += ntohs(temp_hdr->size);
-
- }
-
- //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));
-#endif
- }
- }
- else
- {
-#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "Func wlan_process_helper got wrong BSSID: %s\n", macprinter(
- wlanIeeeHeader->mac2));
-#endif
- }
-
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Size of packet is too small; size: %u\n",
+ ntohs (hdr->size));
+ GNUNET_break (0);
+ /* FIXME: restart SUID process */
+ return;
}
- else if (ntohs(hdr->type) == GNUNET_MESSAGE_TYPE_WLAN_HELPER_CONTROL)
+ rxinfo = (const struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage *) hdr;
+ //process only if it is an broadcast or for this computer both with the gnunet bssid
+ //check for bssid
+ if (memcmp
+ (&rxinfo->frame.addr3, &mac_bssid_gnunet,
+ sizeof (struct GNUNET_TRANSPORT_WLAN_MacAddress)) == 0)
{
-
-#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));
-#endif
-
- //TODO more control messages
- //TODO use struct wlan_helper_control
- if (ntohs(hdr->size) == sizeof(struct Wlan_Helper_Control_Message))
+ //check for broadcast or mac
+ if ((memcmp
+ (&rxinfo->frame.addr1, &bc_all_mac,
+ sizeof (struct GNUNET_TRANSPORT_WLAN_MacAddress)) == 0) ||
+ (memcmp
+ (&rxinfo->frame.addr1, &plugin->mac_address,
+ sizeof (struct GNUNET_TRANSPORT_WLAN_MacAddress)) == 0))
+ {
+ //if packet is from us return
+ if ((memcmp
+ (&rxinfo->frame.addr2, &plugin->mac_address,
+ sizeof (struct GNUNET_TRANSPORT_WLAN_MacAddress)) == 0))
{
- //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.mac, sizeof(struct MacAddress),
- GNUNET_TIME_UNIT_FOREVER_REL);
+ /* not for us */
+ return;
}
- else
+ datasize = ntohs (hdr->size) - sizeof (struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ _("# wlan messages for this client received"),
+ 1, GNUNET_NO);
+ // FIXME: this is a job for SERVER_mst --
+ // what we are doing here is not good for alignment...
+ pos = 0;
+ end = (const char*) &rxinfo[1];
+ while (pos < datasize - sizeof (struct GNUNET_MessageHeader))
{
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Wrong wlan mac address %s\n",
- macprinter(plugin->mac_address));
+ temp_hdr = (struct GNUNET_MessageHeader *) &end[pos];
+ if (ntohs (temp_hdr->size) <= datasize - pos)
+ {
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ _
+ ("# wlan messages inside WLAN_HELPER_DATA received"),
+ 1, GNUNET_NO);
+ wlan_data_helper (plugin, temp_hdr, rxinfo);
+ }
+ else
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Size of packet is too small; size: %u > size of packet: %u\n",
+ ntohs (temp_hdr->size), datasize - pos);
+ }
+ pos += ntohs (temp_hdr->size);
}
-
+ }
+ else
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Func wlan_process_helper got wrong MAC: %s\n",
+ macprinter (&rxinfo->frame.addr1));
+ }
}
-
- else
+ else
{
- // TODO Wrong data?
- GNUNET_log(GNUNET_ERROR_TYPE_INFO,
- "WLAN helper packet has not the right type\n");
- return;
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Func wlan_process_helper got wrong BSSID: %s\n",
+ macprinter (&rxinfo->frame.addr2));
}
-}
-
-/**
- * We have been notified that wlan-helper has written something to stdout.
- * Handle the output, then reschedule this function to be called again once
- * more is available.
- *
- * @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)
- return;
-
- char mybuf[WLAN_MTU + sizeof(struct GNUNET_MessageHeader)];
- ssize_t bytes;
-
- bytes = GNUNET_DISK_file_read(plugin->server_stdout_handle, mybuf,
- sizeof(mybuf));
- if (bytes <= 0)
+ break;
+ case GNUNET_MESSAGE_TYPE_WLAN_HELPER_CONTROL:
+ //TODO more control messages
+ if (ntohs (hdr->size) != sizeof (struct GNUNET_TRANSPORT_WLAN_HelperControlMessage))
{
-#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- _("Finished reading from wlan-helper stdout with code: %d\n"),
- bytes);
-#endif
+ GNUNET_break (0);
+ /* FIXME: restart SUID process */
return;
}
- GNUNET_SERVER_mst_receive(plugin->suid_tokenizer, NULL, mybuf, bytes,
- GNUNET_NO, GNUNET_NO);
-
- GNUNET_assert(plugin->server_read_task == GNUNET_SCHEDULER_NO_TASK);
- plugin->server_read_task = GNUNET_SCHEDULER_add_read_file(
- GNUNET_TIME_UNIT_FOREVER_REL, plugin->server_stdout_handle,
- &wlan_plugin_helper_read, plugin);
+ cm = (const struct GNUNET_TRANSPORT_WLAN_HelperControlMessage *) hdr;
+ plugin->mac_address = cm->mac;
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Received WLAN_HELPER_CONTROL message with transport of address %s\n",
+ wlan_plugin_address_to_string (cls, &plugin->mac_address,
+ sizeof (struct GNUNET_TRANSPORT_WLAN_MacAddress)));
+ plugin->env->notify_address (plugin->env->cls, GNUNET_YES,
+ &plugin->mac_address,
+ sizeof (struct GNUNET_TRANSPORT_WLAN_MacAddress));
+ break;
+ default:
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Func wlan_process_helper got unknown message with number %u, size %u\n",
+ ntohs (hdr->type), ntohs (hdr->size));
+ GNUNET_break (0);
+ return;
+ }
}
-/**
- * Start the gnunet-wlan-helper process.
- *
- * @param plugin the transport plugin
- * @param testmode should we use the dummy driver for testing?
- * @return GNUNET_YES if process was started, GNUNET_SYSERR on error
- */
-static int
-wlan_transport_start_wlan_helper(struct Plugin *plugin, int testmode)
-{
- const char * filename = "gnunet-transport-wlan-helper";
- plugin->server_stdout = GNUNET_DISK_pipe(GNUNET_YES, GNUNET_NO, GNUNET_YES);
- if (plugin->server_stdout == NULL)
- return GNUNET_SYSERR;
- plugin->server_stdin = GNUNET_DISK_pipe(GNUNET_YES, GNUNET_YES, GNUNET_NO);
- if (plugin->server_stdin == NULL)
- return GNUNET_SYSERR;
-
-#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "Starting gnunet-wlan-helper process cmd: %s %s %i\n", filename,
- 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);
- if (plugin->server_proc == NULL)
- {
-#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "Failed to start gnunet-wlan-helper process\n");
-#endif
- return GNUNET_SYSERR;
- }
-
- /* Close the write end of the read pipe */
- GNUNET_DISK_pipe_close_end(plugin->server_stdout, GNUNET_DISK_PIPE_END_WRITE);
-
- /* Close the read end of the write pipe */
- GNUNET_DISK_pipe_close_end(plugin->server_stdin, GNUNET_DISK_PIPE_END_READ);
-
- plugin->server_stdout_handle = GNUNET_DISK_pipe_handle(plugin->server_stdout,
- GNUNET_DISK_PIPE_END_READ);
- plugin->server_stdin_handle = GNUNET_DISK_pipe_handle(plugin->server_stdin,
- GNUNET_DISK_PIPE_END_WRITE);
-
- GNUNET_assert(plugin->server_read_task == GNUNET_SCHEDULER_NO_TASK);
-
-#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "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);
-
- return GNUNET_YES;
-}
/**
* Exit point from the plugin.
* @param cls pointer to the api struct
*/
-
//FIXME cleanup
void *
-libgnunet_plugin_transport_wlan_done(void *cls)
+libgnunet_plugin_transport_wlan_done (void *cls)
{
struct GNUNET_TRANSPORT_PluginFunctions *api = cls;
struct Plugin *plugin = api->cls;
-
-#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "libgnunet_plugin_transport_wlan_done started\n");
-#endif
-
- GNUNET_assert(cls !=NULL);
-
+ struct MacEndpoint *endpoint;
+ struct MacEndpoint *endpoint_next;
+
+ if (NULL == plugin)
+ {
+ GNUNET_free (api);
+ return NULL;
+ }
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "libgnunet_plugin_transport_wlan_done started\n");
+ wlan_transport_stop_wlan_helper (plugin);
+
+ GNUNET_assert (cls != NULL);
+ //free sessions
+ endpoint = plugin->mac_head;
+ while (endpoint != NULL)
+ {
+ endpoint_next = endpoint->next;
+ free_macendpoint (plugin, endpoint);
+ endpoint = endpoint_next;
+
+ }
if (plugin->suid_tokenizer != NULL)
- GNUNET_SERVER_mst_destroy(plugin->suid_tokenizer);
+ GNUNET_SERVER_mst_destroy (plugin->suid_tokenizer);
if (plugin->data_tokenizer != NULL)
- GNUNET_SERVER_mst_destroy(plugin->data_tokenizer);
+ GNUNET_SERVER_mst_destroy (plugin->data_tokenizer);
- GNUNET_free_non_null(plugin->interface);
+ GNUNET_free_non_null (plugin->interface);
GNUNET_free (plugin);
GNUNET_free (api);
return NULL;
}
+
/**
* Entry point for the plugin.
*
* @return the 'struct GNUNET_TRANSPORT_PluginFunctions*' or NULL on error
*/
void *
-libgnunet_plugin_transport_wlan_init(void *cls)
+libgnunet_plugin_transport_wlan_init (void *cls)
{
- //struct GNUNET_SERVICE_Context *service;
struct GNUNET_TRANSPORT_PluginEnvironment *env = cls;
struct GNUNET_TRANSPORT_PluginFunctions *api;
struct Plugin *plugin;
- static unsigned long long testmode = 0;
- GNUNET_assert(cls !=NULL);
+ if (NULL == env->receive)
+ {
+ /* run in 'stub' mode (i.e. as part of gnunet-peerinfo), don't fully
+ initialze the plugin or the API */
+ api = GNUNET_malloc (sizeof (struct GNUNET_TRANSPORT_PluginFunctions));
+ api->cls = NULL;
+ api->address_pretty_printer = &wlan_plugin_address_pretty_printer;
+ api->address_to_string = &wlan_plugin_address_to_string;
+ api->string_to_address = NULL; // FIXME!
+ return api;
+ }
plugin = GNUNET_malloc (sizeof (struct Plugin));
plugin->env = env;
plugin->pendingsessions = 0;
- plugin->session_count = 0;
+ GNUNET_STATISTICS_set (plugin->env->stats, _("# wlan pending sessions"),
+ plugin->pendingsessions, GNUNET_NO);
+ plugin->mac_count = 0;
+ GNUNET_STATISTICS_set (plugin->env->stats, _("# wlan mac endpoints"),
+ plugin->mac_count, GNUNET_NO);
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);
-
- 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;
- }
+ plugin->suid_tokenizer =
+ GNUNET_SERVER_mst_create (&wlan_process_helper, plugin);
- 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);
- 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->data_tokenizer = GNUNET_SERVER_mst_create (&process_data, plugin);
//plugin->sessions = GNUNET_malloc (sizeof (struct Sessionqueue));
- //plugin->pending_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->get_session = &wlan_plugin_get_session;
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_next_message_id();
-
-#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "wlan init finished\n");
-#endif
-
+ //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", &(plugin->testmode)))
+ plugin->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 (api);
+ return NULL;
+ }
+ }
+
+ //start the plugin
+ wlan_transport_start_wlan_helper (plugin);
+ set_next_beacon_time (plugin);
+ set_next_send (plugin);
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "wlan init finished\n");
return api;
}
+
+
+
/* end of plugin_transport_wlan.c */
projects / oweals / gnunet.git / blobdiff