2 This file is part of GNUnet
3 (C) 2010, 2011, 2012 Christian Grothoff (and other contributing authors)
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 3, or (at your
8 option) any later version.
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11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
22 * @file transport/plugin_transport_bluetooth.c
23 * @brief transport plugin for bluetooth
24 * @author David Brodski
25 * @author Christian Grothoff
27 * THIS IS A COPY OF plugin_transport_wlan.c
30 #include "gnunet_hello_lib.h"
31 #include "gnunet_protocols.h"
32 #include "gnunet_util_lib.h"
33 #include "gnunet_statistics_service.h"
34 #include "gnunet_transport_service.h"
35 #include "gnunet_transport_plugin.h"
36 #include "plugin_transport_wlan.h"
37 #include "gnunet_common.h"
38 #include "gnunet_crypto_lib.h"
39 #include "gnunet_fragmentation_lib.h"
40 #include "gnunet_constants.h"
46 #define LOG(kind,...) GNUNET_log_from (kind, "transport-bluetooth",__VA_ARGS__)
48 #define PLUGIN_NAME "bluetooth"
51 * Max size of packet (that we give to the WLAN driver for transmission)
56 * time out of a mac endpoint
58 #define MACENDPOINT_TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT, 60)
61 * We reduce the frequence of HELLO beacons in relation to
62 * the number of MAC addresses currently visible to us.
63 * This is the multiplication factor.
65 #define HELLO_BEACON_SCALING_FACTOR GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 60)
68 * Maximum number of messages in defragmentation queue per MAC
70 #define MESSAGES_IN_DEFRAG_QUEUE_PER_MAC 2
73 * Link layer control fields for better compatibility
74 * (i.e. GNUnet over WLAN is not IP-over-WLAN).
76 #define WLAN_LLC_DSAP_FIELD 0x1f
77 #define WLAN_LLC_SSAP_FIELD 0x1f
80 GNUNET_NETWORK_STRUCT_BEGIN
82 * Header for messages which need fragmentation. This is the format of
83 * a message we obtain AFTER defragmentation. We then need to check
84 * the CRC and then tokenize the payload and pass it to the
91 * Message type is GNUNET_MESSAGE_TYPE_WLAN_DATA.
93 struct GNUNET_MessageHeader header;
96 * CRC32 checksum (only over the payload), in NBO.
98 uint32_t crc GNUNET_PACKED;
101 * Sender of the message.
103 struct GNUNET_PeerIdentity sender;
106 * Target of the message.
108 struct GNUNET_PeerIdentity target;
110 /* followed by payload, possibly including
111 multiple messages! */
118 uint32_t options GNUNET_PACKED;
120 struct GNUNET_TRANSPORT_WLAN_MacAddress mac;
124 GNUNET_NETWORK_STRUCT_END
128 * Information kept for each message that is yet to be fragmented and
131 struct PendingMessage
134 * next entry in the DLL
136 struct PendingMessage *next;
139 * previous entry in the DLL
141 struct PendingMessage *prev;
144 * The pending message
146 struct WlanHeader *msg;
149 * Continuation function to call once the message
150 * has been sent. Can be NULL if there is no
151 * continuation to call.
153 GNUNET_TRANSPORT_TransmitContinuation transmit_cont;
156 * Cls for transmit_cont
158 void *transmit_cont_cls;
161 * Timeout task (for this message).
163 GNUNET_SCHEDULER_TaskIdentifier timeout_task;
169 * Session handle for connections with other peers.
174 * To whom are we talking to (set to our identity
175 * if we are still waiting for the welcome message)
177 struct GNUNET_PeerIdentity target;
180 * API requirement (must be first).
182 struct SessionHeader header;
185 * We keep all sessions in a DLL at their respective
186 * 'struct MACEndpoint'.
188 struct Session *next;
191 * We keep all sessions in a DLL at their respective
192 * 'struct MACEndpoint'.
194 struct Session *prev;
197 * MAC endpoint with the address of this peer.
199 struct MacEndpoint *mac;
202 * Head of messages currently pending for transmission to this peer.
204 struct PendingMessage *pending_message_head;
207 * Tail of messages currently pending for transmission to this peer.
209 struct PendingMessage *pending_message_tail;
212 * When should this session time out?
214 struct GNUNET_TIME_Absolute timeout;
217 * Timeout task (for the session).
219 GNUNET_SCHEDULER_TaskIdentifier timeout_task;
225 * Struct for messages that are being fragmented in a MAC's transmission queue.
227 struct FragmentMessage
231 * This is a doubly-linked list.
233 struct FragmentMessage *next;
236 * This is a doubly-linked list.
238 struct FragmentMessage *prev;
241 * MAC endpoint this message belongs to
243 struct MacEndpoint *macendpoint;
246 * Fragmentation context
248 struct GNUNET_FRAGMENT_Context *fragcontext;
251 * Transmission handle to helper (to cancel if the frag context
252 * is destroyed early for some reason).
254 struct GNUNET_HELPER_SendHandle *sh;
257 * Intended recipient.
259 struct GNUNET_PeerIdentity target;
262 * Timeout value for the message.
264 struct GNUNET_TIME_Absolute timeout;
269 GNUNET_SCHEDULER_TaskIdentifier timeout_task;
272 * Continuation to call when we're done with this message.
274 GNUNET_TRANSPORT_TransmitContinuation cont;
282 * Size of original message
287 * Number of bytes used to transmit message
295 * Struct to represent one network card connection
301 * We keep all MACs in a DLL in the plugin.
303 struct MacEndpoint *next;
306 * We keep all MACs in a DLL in the plugin.
308 struct MacEndpoint *prev;
311 * Pointer to the global plugin struct.
313 struct Plugin *plugin;
316 * Head of sessions that use this MAC.
318 struct Session *sessions_head;
321 * Tail of sessions that use this MAC.
323 struct Session *sessions_tail;
326 * Head of messages we are currently sending to this MAC.
328 struct FragmentMessage *sending_messages_head;
331 * Tail of messages we are currently sending to this MAC.
333 struct FragmentMessage *sending_messages_tail;
336 * Defrag context for this MAC
338 struct GNUNET_DEFRAGMENT_Context *defrag;
341 * When should this endpoint time out?
343 struct GNUNET_TIME_Absolute timeout;
348 GNUNET_SCHEDULER_TaskIdentifier timeout_task;
351 * count of messages in the fragment out queue for this mac endpoint
353 unsigned int fragment_messages_out_count;
358 //struct WlanAddress addr;
360 struct GNUNET_HELLO_Address *address;
363 * Message delay for fragmentation context
365 struct GNUNET_TIME_Relative msg_delay;
368 * ACK delay for fragmentation context
370 struct GNUNET_TIME_Relative ack_delay;
373 * Desired transmission power for this MAC
378 * Desired transmission rate for this MAC
383 * Antenna we should use for this MAC
391 * Encapsulation of all of the state of the plugin.
398 struct GNUNET_TRANSPORT_PluginEnvironment *env;
401 * Handle to helper process for priviledged operations.
403 struct GNUNET_HELPER_Handle *suid_helper;
406 * ARGV-vector for the helper (all helpers take only the binary
407 * name, one actual argument, plus the NULL terminator for 'argv').
409 char * helper_argv[3];
412 * The interface of the wlan card given to us by the user.
417 * Tokenizer for demultiplexing of data packets resulting from defragmentation.
419 struct GNUNET_SERVER_MessageStreamTokenizer *fragment_data_tokenizer;
422 * Tokenizer for demultiplexing of data packets received from the suid helper
424 struct GNUNET_SERVER_MessageStreamTokenizer *helper_payload_tokenizer;
427 * Tokenizer for demultiplexing of data packets that follow the WLAN Header
429 struct GNUNET_SERVER_MessageStreamTokenizer *wlan_header_payload_tokenizer;
432 * Head of list of open connections.
434 struct MacEndpoint *mac_head;
437 * Tail of list of open connections.
439 struct MacEndpoint *mac_tail;
442 * Number of connections
444 unsigned int mac_count;
447 * Task that periodically sends a HELLO beacon via the helper.
449 GNUNET_SCHEDULER_TaskIdentifier beacon_task;
452 * Tracker for bandwidth limit
454 struct GNUNET_BANDWIDTH_Tracker tracker;
457 * The mac_address of the wlan card given to us by the helper.
459 struct GNUNET_TRANSPORT_WLAN_MacAddress mac_address;
462 * Have we received a control message with our MAC address yet?
467 * Options for addresses
475 * Information associated with a message. Can contain
476 * the session or the MAC endpoint associated with the
482 * NULL if the identity of the other peer is not known.
484 struct Session *session;
487 * MAC address of the other peer, NULL if not known.
489 struct MacEndpoint *endpoint;
493 * Function called for a quick conversion of the binary address to
494 * a numeric address. Note that the caller must not free the
495 * address and that the next call to this function is allowed
496 * to override the address again.
499 * @param addr binary address
500 * @param addrlen length of the address
501 * @return string representing the same address
504 bluetooth_plugin_address_to_string (void *cls, const void *addr, size_t addrlen);
507 * Print MAC addresses nicely.
509 * @param mac the mac address
510 * @return string to a static buffer with the human-readable mac, will be overwritten during the next call to this function
513 mac_to_string (const struct GNUNET_TRANSPORT_WLAN_MacAddress * mac)
515 static char macstr[20];
517 GNUNET_snprintf (macstr, sizeof (macstr), "%.2X:%.2X:%.2X:%.2X:%.2X:%.2X",
518 mac->mac[0], mac->mac[1],
519 mac->mac[2], mac->mac[3], mac->mac[4], mac->mac[5]);
525 * Fill the radiotap header
527 * @param endpoint pointer to the endpoint, can be NULL
528 * @param header pointer to the radiotap header
529 * @param size total message size
532 get_radiotap_header (struct MacEndpoint *endpoint,
533 struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage *header,
536 header->header.type = ntohs (GNUNET_MESSAGE_TYPE_WLAN_DATA_TO_HELPER);
537 header->header.size = ntohs (size);
538 if (NULL != endpoint)
540 header->rate = endpoint->rate;
541 header->tx_power = endpoint->tx_power;
542 header->antenna = endpoint->antenna;
547 header->tx_power = 0;
554 * Generate the WLAN hardware header for one packet
556 * @param plugin the plugin handle
557 * @param header address to write the header to
558 * @param to_mac_addr address of the recipient
559 * @param size size of the whole packet, needed to calculate the time to send the packet
562 get_wlan_header (struct Plugin *plugin,
563 struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame *header,
564 const struct GNUNET_TRANSPORT_WLAN_MacAddress *to_mac_addr,
567 const int rate = 11000000;
569 header->frame_control = htons (IEEE80211_FC0_TYPE_DATA);
570 header->addr1 = *to_mac_addr;
571 header->addr2 = plugin->mac_address;
572 header->addr3 = mac_bssid_gnunet;
573 header->duration = GNUNET_htole16 ((size * 1000000) / rate + 290);
574 header->sequence_control = 0; // FIXME?
575 header->llc[0] = WLAN_LLC_DSAP_FIELD;
576 header->llc[1] = WLAN_LLC_SSAP_FIELD;
577 header->llc[2] = 0; // FIXME?
578 header->llc[3] = 0; // FIXME?
583 * Send an ACK for a fragment we received.
585 * @param cls the 'struct MacEndpoint' the ACK must be sent to
586 * @param msg_id id of the message
587 * @param hdr pointer to the hdr where the ack is stored
590 send_ack (void *cls, uint32_t msg_id,
591 const struct GNUNET_MessageHeader *hdr)
593 struct MacEndpoint *endpoint = cls;
594 struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage* radio_header;
595 uint16_t msize = ntohs (hdr->size);
596 size_t size = sizeof (struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage) + msize;
599 if (size >= GNUNET_SERVER_MAX_MESSAGE_SIZE)
604 LOG (GNUNET_ERROR_TYPE_DEBUG,
605 "Sending ACK to helper\n");
606 radio_header = (struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage *) buf;
607 get_radiotap_header (endpoint, radio_header, size);
608 get_wlan_header (endpoint->plugin,
609 &radio_header->frame,
610 endpoint->address->address,
611 endpoint->address->address_length);
612 memcpy (&radio_header[1], hdr, msize);
614 GNUNET_HELPER_send (endpoint->plugin->suid_helper,
615 &radio_header->header,
616 GNUNET_NO /* dropping ACKs is bad */,
618 GNUNET_STATISTICS_update (endpoint->plugin->env->stats, _("# Bluetooth ACKs sent"),
624 * Handles the data after all fragments are put together
626 * @param cls macendpoint this messages belongs to
627 * @param hdr pointer to the data
630 bluetooth_data_message_handler (void *cls, const struct GNUNET_MessageHeader *hdr)
632 struct MacEndpoint *endpoint = cls;
633 struct Plugin *plugin = endpoint->plugin;
634 struct MacAndSession mas;
636 GNUNET_STATISTICS_update (plugin->env->stats,
637 _("# Bluetooth messages defragmented"), 1,
640 mas.endpoint = endpoint;
641 (void) GNUNET_SERVER_mst_receive (plugin->fragment_data_tokenizer,
645 GNUNET_YES, GNUNET_NO);
652 * @param session the session free
655 free_session (struct Session *session)
657 struct MacEndpoint *endpoint = session->mac;
658 struct PendingMessage *pm;
660 endpoint->plugin->env->session_end (endpoint->plugin->env->cls,
663 while (NULL != (pm = session->pending_message_head))
665 GNUNET_CONTAINER_DLL_remove (session->pending_message_head,
666 session->pending_message_tail, pm);
667 if (GNUNET_SCHEDULER_NO_TASK != pm->timeout_task)
669 GNUNET_SCHEDULER_cancel (pm->timeout_task);
670 pm->timeout_task = GNUNET_SCHEDULER_NO_TASK;
672 GNUNET_free (pm->msg);
675 GNUNET_CONTAINER_DLL_remove (endpoint->sessions_head,
676 endpoint->sessions_tail,
678 if (session->timeout_task != GNUNET_SCHEDULER_NO_TASK)
680 GNUNET_SCHEDULER_cancel (session->timeout_task);
681 session->timeout_task = GNUNET_SCHEDULER_NO_TASK;
683 GNUNET_STATISTICS_update (endpoint->plugin->env->stats, _("# Bluetooth sessions allocated"), -1,
685 GNUNET_free (session);
690 * A session is timing out. Clean up.
692 * @param cls pointer to the Session
693 * @param tc pointer to the GNUNET_SCHEDULER_TaskContext
696 session_timeout (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
698 struct Session * session = cls;
699 struct GNUNET_TIME_Relative timeout;
701 session->timeout_task = GNUNET_SCHEDULER_NO_TASK;
702 timeout = GNUNET_TIME_absolute_get_remaining (session->timeout);
703 if (0 == timeout.rel_value_us)
705 free_session (session);
708 session->timeout_task =
709 GNUNET_SCHEDULER_add_delayed (timeout, &session_timeout, session);
714 * Create a new session
716 * @param endpoint pointer to the mac endpoint of the peer
717 * @param peer peer identity to use for this session
718 * @return returns the session
720 static struct Session *
721 create_session (struct MacEndpoint *endpoint,
722 const struct GNUNET_PeerIdentity *peer)
724 struct Session *session;
726 for (session = endpoint->sessions_head; NULL != session; session = session->next)
727 if (0 == memcmp (peer, &session->target,
728 sizeof (struct GNUNET_PeerIdentity)))
730 session->timeout = GNUNET_TIME_relative_to_absolute (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT);
733 GNUNET_STATISTICS_update (endpoint->plugin->env->stats, _("# Bluetooth sessions allocated"), 1,
735 session = GNUNET_new (struct Session);
736 GNUNET_CONTAINER_DLL_insert_tail (endpoint->sessions_head,
737 endpoint->sessions_tail,
739 session->mac = endpoint;
740 session->target = *peer;
741 session->timeout = GNUNET_TIME_relative_to_absolute (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT);
742 session->timeout_task =
743 GNUNET_SCHEDULER_add_delayed (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT, &session_timeout, session);
744 LOG (GNUNET_ERROR_TYPE_DEBUG,
745 "Created new session for peer `%s' with endpoint %s\n",
747 mac_to_string (endpoint->address->address));
753 * Function called once we have successfully given the fragment
754 * message to the SUID helper process and we are thus ready for
757 * @param cls the 'struct FragmentMessage'
758 * @param result result of the operation (GNUNET_OK on success, GNUNET_NO if the helper died, GNUNET_SYSERR
759 * if the helper was stopped)
762 fragment_transmission_done (void *cls,
765 struct FragmentMessage *fm = cls;
769 GNUNET_FRAGMENT_context_transmission_done (fm->fragcontext);
774 * Transmit a fragment of a message.
776 * @param cls 'struct FragmentMessage' this fragment message belongs to
777 * @param hdr pointer to the start of the fragment message
780 transmit_fragment (void *cls,
781 const struct GNUNET_MessageHeader *hdr)
783 struct FragmentMessage *fm = cls;
784 struct MacEndpoint *endpoint = fm->macendpoint;
788 msize = ntohs (hdr->size);
789 size = sizeof (struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage) + msize;
792 struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage *radio_header;
794 radio_header = (struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage *) buf;
795 get_radiotap_header (endpoint, radio_header, size);
796 get_wlan_header (endpoint->plugin,
797 &radio_header->frame,
798 endpoint->address->address,
799 endpoint->address->address_length);
800 memcpy (&radio_header[1], hdr, msize);
801 GNUNET_assert (NULL == fm->sh);
802 fm->sh = GNUNET_HELPER_send (endpoint->plugin->suid_helper,
803 &radio_header->header,
805 &fragment_transmission_done, fm);
806 fm->size_on_wire += size;
808 GNUNET_STATISTICS_update (endpoint->plugin->env->stats, _("# Bluetooth message fragments sent"),
811 GNUNET_FRAGMENT_context_transmission_done (fm->fragcontext);
812 GNUNET_STATISTICS_update (endpoint->plugin->env->stats,
813 "# bytes currently in Bluetooth buffers",
815 GNUNET_STATISTICS_update (endpoint->plugin->env->stats,
816 "# bytes transmitted via Bluetooth",
823 * Frees the space of a message in the fragment queue (send queue)
825 * @param fm message to free
828 free_fragment_message (struct FragmentMessage *fm)
830 struct MacEndpoint *endpoint = fm->macendpoint;
832 GNUNET_STATISTICS_update (endpoint->plugin->env->stats, _("# Bluetooth messages pending (with fragmentation)"),
834 GNUNET_CONTAINER_DLL_remove (endpoint->sending_messages_head,
835 endpoint->sending_messages_tail, fm);
838 GNUNET_HELPER_send_cancel (fm->sh);
841 GNUNET_FRAGMENT_context_destroy (fm->fragcontext,
842 &endpoint->msg_delay,
843 &endpoint->ack_delay);
844 if (fm->timeout_task != GNUNET_SCHEDULER_NO_TASK)
846 GNUNET_SCHEDULER_cancel (fm->timeout_task);
847 fm->timeout_task = GNUNET_SCHEDULER_NO_TASK;
854 * A FragmentMessage has timed out. Remove it.
856 * @param cls pointer to the 'struct FragmentMessage'
857 * @param tc pointer to the GNUNET_SCHEDULER_TaskContext
860 fragmentmessage_timeout (void *cls,
861 const struct GNUNET_SCHEDULER_TaskContext *tc)
863 struct FragmentMessage *fm = cls;
865 fm->timeout_task = GNUNET_SCHEDULER_NO_TASK;
866 if (NULL != fm->cont)
868 fm->cont (fm->cont_cls, &fm->target, GNUNET_SYSERR, fm->size_payload, fm->size_on_wire);
871 free_fragment_message (fm);
876 * Transmit a message to the given destination with fragmentation.
878 * @param endpoint desired destination
879 * @param timeout how long can the message wait?
880 * @param target peer that should receive the message
881 * @param msg message to transmit
882 * @param payload_size bytes of payload
883 * @param cont continuation to call once the message has
884 * been transmitted (or if the transport is ready
885 * for the next transmission call; or if the
886 * peer disconnected...); can be NULL
887 * @param cont_cls closure for cont
890 send_with_fragmentation (struct MacEndpoint *endpoint,
891 struct GNUNET_TIME_Relative timeout,
892 const struct GNUNET_PeerIdentity *target,
893 const struct GNUNET_MessageHeader *msg,
895 GNUNET_TRANSPORT_TransmitContinuation cont, void *cont_cls)
898 struct FragmentMessage *fm;
899 struct Plugin *plugin;
901 plugin = endpoint->plugin;
902 fm = GNUNET_new (struct FragmentMessage);
903 fm->macendpoint = endpoint;
904 fm->target = *target;
905 fm->size_payload = payload_size;
906 fm->size_on_wire = 0;
907 fm->timeout = GNUNET_TIME_relative_to_absolute (timeout);
909 fm->cont_cls = cont_cls;
910 /* 1 MBit/s typical data rate, 1430 byte fragments => ~100 ms per message */
912 GNUNET_FRAGMENT_context_create (plugin->env->stats, WLAN_MTU,
917 &transmit_fragment, fm);
919 GNUNET_SCHEDULER_add_delayed (timeout,
920 &fragmentmessage_timeout, fm);
921 GNUNET_CONTAINER_DLL_insert_tail (endpoint->sending_messages_head,
922 endpoint->sending_messages_tail,
928 * Free a MAC endpoint.
930 * @param endpoint pointer to the MacEndpoint to free
933 free_macendpoint (struct MacEndpoint *endpoint)
935 struct Plugin *plugin = endpoint->plugin;
936 struct FragmentMessage *fm;
937 struct Session *session;
939 GNUNET_STATISTICS_update (plugin->env->stats,
940 _("# Bluetooth MAC endpoints allocated"), -1, GNUNET_NO);
941 while (NULL != (session = endpoint->sessions_head))
942 free_session (session);
943 while (NULL != (fm = endpoint->sending_messages_head))
944 free_fragment_message (fm);
945 GNUNET_CONTAINER_DLL_remove (plugin->mac_head,
949 if (NULL != endpoint->defrag)
951 GNUNET_DEFRAGMENT_context_destroy(endpoint->defrag);
952 endpoint->defrag = NULL;
956 if (GNUNET_SCHEDULER_NO_TASK != endpoint->timeout_task)
958 GNUNET_SCHEDULER_cancel (endpoint->timeout_task);
959 endpoint->timeout_task = GNUNET_SCHEDULER_NO_TASK;
961 GNUNET_free (endpoint);
966 * A MAC endpoint is timing out. Clean up.
968 * @param cls pointer to the MacEndpoint
969 * @param tc pointer to the GNUNET_SCHEDULER_TaskContext
972 macendpoint_timeout (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
974 struct MacEndpoint *endpoint = cls;
975 struct GNUNET_TIME_Relative timeout;
977 endpoint->timeout_task = GNUNET_SCHEDULER_NO_TASK;
978 timeout = GNUNET_TIME_absolute_get_remaining (endpoint->timeout);
979 if (0 == timeout.rel_value_us)
981 free_macendpoint (endpoint);
984 endpoint->timeout_task =
985 GNUNET_SCHEDULER_add_delayed (timeout, &macendpoint_timeout,
991 * Find (or create) a MacEndpoint with a specific MAC address
993 * @param plugin pointer to the plugin struct
994 * @param addr the MAC address of the endpoint
995 * @return handle to our data structure for this MAC
997 static struct MacEndpoint *
998 create_macendpoint (struct Plugin *plugin,
999 const struct WlanAddress *addr)
1001 struct MacEndpoint *pos;
1003 for (pos = plugin->mac_head; NULL != pos; pos = pos->next)
1004 if (0 == memcmp (addr, &pos->address->address, sizeof (struct WlanAddress)))
1006 pos = GNUNET_new (struct MacEndpoint);
1007 pos->address = GNUNET_HELLO_address_allocate (NULL, PLUGIN_NAME, addr,
1008 sizeof (struct WlanAddress), GNUNET_HELLO_ADDRESS_INFO_NONE);
1009 pos->plugin = plugin;
1011 GNUNET_DEFRAGMENT_context_create (plugin->env->stats, WLAN_MTU,
1012 MESSAGES_IN_DEFRAG_QUEUE_PER_MAC,
1014 &bluetooth_data_message_handler,
1017 pos->msg_delay = GNUNET_TIME_UNIT_MILLISECONDS;
1018 pos->ack_delay = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MILLISECONDS,
1020 pos->timeout = GNUNET_TIME_relative_to_absolute (MACENDPOINT_TIMEOUT);
1022 GNUNET_SCHEDULER_add_delayed (MACENDPOINT_TIMEOUT, &macendpoint_timeout,
1024 GNUNET_CONTAINER_DLL_insert (plugin->mac_head, plugin->mac_tail, pos);
1025 plugin->mac_count++;
1026 GNUNET_STATISTICS_update (plugin->env->stats, _("# Bluetooth MAC endpoints allocated"),
1028 LOG (GNUNET_ERROR_TYPE_DEBUG,
1029 "New MAC endpoint `%s'\n",
1030 bluetooth_plugin_address_to_string(NULL, addr, sizeof (struct WlanAddress)));
1036 * Function obtain the network type for a session
1038 * @param cls closure ('struct Plugin*')
1039 * @param session the session
1040 * @return the network type in HBO or GNUNET_SYSERR
1042 static enum GNUNET_ATS_Network_Type
1043 bluetooth_get_network (void *cls,
1044 struct Session *session)
1046 GNUNET_assert (NULL != session);
1047 return GNUNET_ATS_NET_BT;
1052 * Creates a new outbound session the transport service will use to send data to the
1055 * @param cls the plugin
1056 * @param address the address
1057 * @return the session or NULL of max connections exceeded
1059 static struct Session *
1060 bluetooth_plugin_get_session (void *cls,
1061 const struct GNUNET_HELLO_Address *address)
1063 struct Plugin *plugin = cls;
1064 struct MacEndpoint *endpoint;
1066 if (NULL == address)
1068 if (sizeof (struct WlanAddress) != address->address_length)
1073 LOG (GNUNET_ERROR_TYPE_DEBUG,
1074 "Service asked to create session for peer `%s' with MAC `%s'\n",
1075 GNUNET_i2s (&address->peer),
1076 bluetooth_plugin_address_to_string(NULL, address->address, address->address_length));
1077 endpoint = create_macendpoint (plugin, address->address);
1078 return create_session (endpoint, &address->peer);
1083 * Function that can be used to force the plugin to disconnect
1084 * from the given peer and cancel all previous transmissions
1085 * (and their continuation).
1087 * @param cls closure
1088 * @param target peer from which to disconnect
1091 bluetooth_plugin_disconnect_peer (void *cls, const struct GNUNET_PeerIdentity *target)
1093 struct Plugin *plugin = cls;
1094 struct Session *session;
1095 struct MacEndpoint *endpoint;
1097 for (endpoint = plugin->mac_head; NULL != endpoint; endpoint = endpoint->next)
1098 for (session = endpoint->sessions_head; NULL != session; session = session->next)
1099 if (0 == memcmp (target, &session->target,
1100 sizeof (struct GNUNET_PeerIdentity)))
1102 free_session (session);
1103 break; /* inner-loop only (in case peer has another MAC as well!) */
1109 * Function that can be used to force the plugin to disconnect
1110 * from the given peer and cancel all previous transmissions
1111 * (and their continuation).
1113 * @param cls closure
1114 * @param session session to disconnect
1117 bluetooth_plugin_disconnect_session (void *cls,
1118 struct Session *session)
1120 free_session (session);
1126 * Function that is called to get the keepalive factor.
1127 * GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT is divided by this number to
1128 * calculate the interval between keepalive packets.
1130 * @param cls closure with the `struct Plugin`
1131 * @return keepalive factor
1134 bluetooth_query_keepalive_factor (void *cls)
1141 * Function that can be used by the transport service to transmit
1142 * a message using the plugin. Note that in the case of a
1143 * peer disconnecting, the continuation MUST be called
1144 * prior to the disconnect notification itself. This function
1145 * will be called with this peer's HELLO message to initiate
1146 * a fresh connection to another peer.
1148 * @param cls closure
1149 * @param session which session must be used
1150 * @param msgbuf the message to transmit
1151 * @param msgbuf_size number of bytes in 'msgbuf'
1152 * @param priority how important is the message (most plugins will
1153 * ignore message priority and just FIFO)
1154 * @param to how long to wait at most for the transmission (does not
1155 * require plugins to discard the message after the timeout,
1156 * just advisory for the desired delay; most plugins will ignore
1158 * @param cont continuation to call once the message has
1159 * been transmitted (or if the transport is ready
1160 * for the next transmission call; or if the
1161 * peer disconnected...); can be NULL
1162 * @param cont_cls closure for cont
1163 * @return number of bytes used (on the physical network, with overheads);
1164 * -1 on hard errors (i.e. address invalid); 0 is a legal value
1165 * and does NOT mean that the message was not transmitted (DV)
1168 bluetooth_plugin_send (void *cls,
1169 struct Session *session,
1170 const char *msgbuf, size_t msgbuf_size,
1171 unsigned int priority,
1172 struct GNUNET_TIME_Relative to,
1173 GNUNET_TRANSPORT_TransmitContinuation cont, void *cont_cls)
1175 struct Plugin *plugin = cls;
1176 struct WlanHeader *wlanheader;
1177 size_t size = msgbuf_size + sizeof (struct WlanHeader);
1178 char buf[size] GNUNET_ALIGN;
1180 LOG (GNUNET_ERROR_TYPE_DEBUG,
1181 "Transmitting %u bytes of payload to peer `%s' (starting with %u byte message of type %u)\n",
1183 GNUNET_i2s (&session->target),
1184 (unsigned int) ntohs (((struct GNUNET_MessageHeader*)msgbuf)->size),
1185 (unsigned int) ntohs (((struct GNUNET_MessageHeader*)msgbuf)->type));
1186 wlanheader = (struct WlanHeader *) buf;
1187 wlanheader->header.size = htons (msgbuf_size + sizeof (struct WlanHeader));
1188 wlanheader->header.type = htons (GNUNET_MESSAGE_TYPE_WLAN_DATA);
1189 wlanheader->sender = *plugin->env->my_identity;
1190 wlanheader->target = session->target;
1191 wlanheader->crc = htonl (GNUNET_CRYPTO_crc32_n (msgbuf, msgbuf_size));
1192 memcpy (&wlanheader[1], msgbuf, msgbuf_size);
1194 GNUNET_STATISTICS_update (plugin->env->stats,
1195 "# bytes currently in Bluetooth buffers",
1196 msgbuf_size, GNUNET_NO);
1198 send_with_fragmentation (session->mac,
1201 &wlanheader->header,
1209 * We have received data from the WLAN via some session. Process depending
1210 * on the message type (HELLO, DATA, FRAGMENTATION or FRAGMENTATION-ACK).
1212 * @param cls pointer to the plugin
1213 * @param client pointer to the session this message belongs to
1214 * @param hdr start of the message
1217 process_data (void *cls, void *client, const struct GNUNET_MessageHeader *hdr)
1219 struct Plugin *plugin = cls;
1220 struct MacAndSession *mas = client;
1221 struct MacAndSession xmas;
1222 struct GNUNET_ATS_Information ats;
1223 struct FragmentMessage *fm;
1224 struct GNUNET_PeerIdentity tmpsource;
1225 const struct WlanHeader *wlanheader;
1229 ats.type = htonl (GNUNET_ATS_NETWORK_TYPE);
1230 ats.value = htonl (GNUNET_ATS_NET_BT);
1231 msize = ntohs (hdr->size);
1233 GNUNET_STATISTICS_update (plugin->env->stats,
1234 "# bytes received via Bluetooth",
1237 switch (ntohs (hdr->type))
1239 case GNUNET_MESSAGE_TYPE_HELLO:
1241 GNUNET_HELLO_get_id ((const struct GNUNET_HELLO_Message *) hdr, &tmpsource))
1243 GNUNET_break_op (0);
1246 LOG (GNUNET_ERROR_TYPE_DEBUG,
1247 "Processing %u bytes of HELLO from peer `%s' at MAC %s\n",
1248 (unsigned int) msize,
1249 GNUNET_i2s (&tmpsource),
1250 bluetooth_plugin_address_to_string (NULL, mas->endpoint->address,
1251 mas->endpoint->address->address_length));
1253 GNUNET_STATISTICS_update (plugin->env->stats,
1254 _("# HELLO messages received via Bluetooth"), 1,
1256 plugin->env->receive (plugin->env->cls,
1257 mas->endpoint->address,
1260 plugin->env->update_address_metrics (plugin->env->cls,
1261 mas->endpoint->address,
1265 case GNUNET_MESSAGE_TYPE_FRAGMENT:
1266 if (NULL == mas->endpoint)
1271 LOG (GNUNET_ERROR_TYPE_DEBUG,
1272 "Processing %u bytes of FRAGMENT from MAC %s\n",
1273 (unsigned int) msize,
1274 bluetooth_plugin_address_to_string (NULL, mas->endpoint->address->address,
1275 mas->endpoint->address->address_length));
1276 GNUNET_STATISTICS_update (plugin->env->stats,
1277 _("# fragments received via Bluetooth"), 1, GNUNET_NO);
1278 (void) GNUNET_DEFRAGMENT_process_fragment (mas->endpoint->defrag,
1281 case GNUNET_MESSAGE_TYPE_FRAGMENT_ACK:
1282 if (NULL == mas->endpoint)
1287 GNUNET_STATISTICS_update (plugin->env->stats, _("# ACKs received via Bluetooth"),
1289 for (fm = mas->endpoint->sending_messages_head; NULL != fm; fm = fm->next)
1291 ret = GNUNET_FRAGMENT_process_ack (fm->fragcontext, hdr);
1292 if (GNUNET_OK == ret)
1294 LOG (GNUNET_ERROR_TYPE_DEBUG,
1295 "Got last ACK, finished message transmission to `%s' (%p)\n",
1296 bluetooth_plugin_address_to_string (NULL, mas->endpoint->address->address,
1297 mas->endpoint->address->address_length),
1299 mas->endpoint->timeout = GNUNET_TIME_relative_to_absolute (MACENDPOINT_TIMEOUT);
1300 if (NULL != fm->cont)
1302 fm->cont (fm->cont_cls, &fm->target, GNUNET_OK, fm->size_payload, fm->size_on_wire);
1305 free_fragment_message (fm);
1308 if (GNUNET_NO == ret)
1310 LOG (GNUNET_ERROR_TYPE_DEBUG,
1311 "Got an ACK, message transmission to `%s' not yet finished\n",
1312 bluetooth_plugin_address_to_string (NULL, mas->endpoint->address->address,
1313 mas->endpoint->address->address_length));
1317 LOG (GNUNET_ERROR_TYPE_DEBUG,
1318 "ACK not matched against any active fragmentation with MAC `%s'\n",
1319 bluetooth_plugin_address_to_string (NULL, mas->endpoint->address->address,
1320 mas->endpoint->address->address_length));
1322 case GNUNET_MESSAGE_TYPE_WLAN_DATA:
1323 if (NULL == mas->endpoint)
1328 if (msize < sizeof (struct WlanHeader))
1333 wlanheader = (const struct WlanHeader *) hdr;
1334 if (0 != memcmp (&wlanheader->target,
1335 plugin->env->my_identity,
1336 sizeof (struct GNUNET_PeerIdentity)))
1338 LOG (GNUNET_ERROR_TYPE_DEBUG,
1339 "Bluetooth data for `%s', not for me, ignoring\n",
1340 GNUNET_i2s (&wlanheader->target));
1343 if (ntohl (wlanheader->crc) !=
1344 GNUNET_CRYPTO_crc32_n (&wlanheader[1], msize - sizeof (struct WlanHeader)))
1346 GNUNET_STATISTICS_update (plugin->env->stats,
1347 _("# Bluetooth DATA messages discarded due to CRC32 error"), 1,
1351 xmas.endpoint = mas->endpoint;
1352 xmas.session = create_session (mas->endpoint, &wlanheader->sender);
1353 LOG (GNUNET_ERROR_TYPE_DEBUG,
1354 "Processing %u bytes of BLUETOOTH DATA from peer `%s'\n",
1355 (unsigned int) msize,
1356 GNUNET_i2s (&wlanheader->sender));
1357 (void) GNUNET_SERVER_mst_receive (plugin->wlan_header_payload_tokenizer,
1359 (const char *) &wlanheader[1],
1360 msize - sizeof (struct WlanHeader),
1361 GNUNET_YES, GNUNET_NO);
1364 if (NULL == mas->endpoint)
1369 if (NULL == mas->session)
1374 LOG (GNUNET_ERROR_TYPE_DEBUG,
1375 "Received packet with %u bytes of type %u from peer %s\n",
1376 (unsigned int) msize,
1377 (unsigned int) ntohs (hdr->type),
1378 GNUNET_i2s (&mas->session->target));
1379 plugin->env->receive (plugin->env->cls,
1380 mas->endpoint->address,
1383 plugin->env->update_address_metrics (plugin->env->cls,
1384 mas->endpoint->address,
1394 * Function used for to process the data from the suid process
1396 * @param cls the plugin handle
1397 * @param client client that send the data (not used)
1398 * @param hdr header of the GNUNET_MessageHeader
1401 handle_helper_message (void *cls, void *client,
1402 const struct GNUNET_MessageHeader *hdr)
1404 struct Plugin *plugin = cls;
1405 struct GNUNET_HELLO_Address *address;
1406 const struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage *rxinfo;
1407 const struct GNUNET_TRANSPORT_WLAN_HelperControlMessage *cm;
1408 struct WlanAddress wa;
1409 struct MacAndSession mas;
1412 msize = ntohs (hdr->size);
1413 switch (ntohs (hdr->type))
1415 case GNUNET_MESSAGE_TYPE_WLAN_HELPER_CONTROL:
1416 if (msize != sizeof (struct GNUNET_TRANSPORT_WLAN_HelperControlMessage))
1421 cm = (const struct GNUNET_TRANSPORT_WLAN_HelperControlMessage *) hdr;
1422 if (GNUNET_YES == plugin->have_mac)
1424 if (0 == memcmp (&plugin->mac_address,
1426 sizeof (struct GNUNET_TRANSPORT_WLAN_MacAddress)))
1427 break; /* no change */
1428 /* remove old address */
1429 memset (&wa, 0, sizeof (struct WlanAddress));
1430 wa.mac = plugin->mac_address;
1431 wa.options = htonl(plugin->options);
1432 address = GNUNET_HELLO_address_allocate (plugin->env->my_identity,
1433 PLUGIN_NAME, &wa, sizeof (wa), GNUNET_HELLO_ADDRESS_INFO_NONE);
1434 plugin->env->notify_address (plugin->env->cls, GNUNET_NO, address);
1435 GNUNET_HELLO_address_free (address);
1437 plugin->mac_address = cm->mac;
1438 plugin->have_mac = GNUNET_YES;
1439 memset (&wa, 0, sizeof (struct WlanAddress));
1440 wa.mac = plugin->mac_address;
1441 wa.options = htonl(plugin->options);
1442 address = GNUNET_HELLO_address_allocate (plugin->env->my_identity,
1443 PLUGIN_NAME, &wa, sizeof (wa), GNUNET_HELLO_ADDRESS_INFO_NONE);
1445 LOG (GNUNET_ERROR_TYPE_DEBUG,
1446 "Received BT_HELPER_CONTROL message with MAC address `%s' for peer `%s'\n",
1447 mac_to_string (&cm->mac),
1448 GNUNET_i2s (plugin->env->my_identity));
1449 plugin->env->notify_address (plugin->env->cls, GNUNET_YES, address);
1450 GNUNET_HELLO_address_free (address);
1453 case GNUNET_MESSAGE_TYPE_WLAN_DATA_FROM_HELPER:
1454 LOG (GNUNET_ERROR_TYPE_DEBUG,
1455 "Got data message from helper with %u bytes\n",
1457 GNUNET_STATISTICS_update (plugin->env->stats,
1458 _("# DATA messages received via Bluetooth"), 1,
1460 if (msize < sizeof (struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage))
1463 LOG (GNUNET_ERROR_TYPE_DEBUG,
1464 "Size of packet is too small (%u bytes)\n",
1468 rxinfo = (const struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage *) hdr;
1470 /* check if message is actually for us */
1471 if (0 != memcmp (&rxinfo->frame.addr3, &mac_bssid_gnunet,
1472 sizeof (struct GNUNET_TRANSPORT_WLAN_MacAddress)))
1474 /* Not the GNUnet BSSID */
1477 if ( (0 != memcmp (&rxinfo->frame.addr1, &bc_all_mac,
1478 sizeof (struct GNUNET_TRANSPORT_WLAN_MacAddress))) &&
1479 (0 != memcmp (&rxinfo->frame.addr1, &plugin->mac_address,
1480 sizeof (struct GNUNET_TRANSPORT_WLAN_MacAddress))) )
1482 /* Neither broadcast nor specifically for us */
1485 if (0 == memcmp (&rxinfo->frame.addr2, &plugin->mac_address,
1486 sizeof (struct GNUNET_TRANSPORT_WLAN_MacAddress)))
1488 /* packet is FROM us, thus not FOR us */
1492 GNUNET_STATISTICS_update (plugin->env->stats,
1493 _("# Bluetooth DATA messages processed"),
1495 LOG (GNUNET_ERROR_TYPE_DEBUG,
1496 "Receiving %u bytes of data from MAC `%s'\n",
1497 (unsigned int) (msize - sizeof (struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage)),
1498 mac_to_string (&rxinfo->frame.addr2));
1499 wa.mac = rxinfo->frame.addr2;
1500 wa.options = htonl (0);
1501 mas.endpoint = create_macendpoint (plugin, &wa);
1503 (void) GNUNET_SERVER_mst_receive (plugin->helper_payload_tokenizer,
1505 (const char*) &rxinfo[1],
1506 msize - sizeof (struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage),
1507 GNUNET_YES, GNUNET_NO);
1511 LOG (GNUNET_ERROR_TYPE_DEBUG,
1512 "Unexpected message of type %u (%u bytes)",
1513 ntohs (hdr->type), ntohs (hdr->size));
1522 * Task to (periodically) send a HELLO beacon
1524 * @param cls pointer to the plugin struct
1525 * @param tc scheduler context
1528 send_hello_beacon (void *cls,
1529 const struct GNUNET_SCHEDULER_TaskContext *tc)
1531 struct Plugin *plugin = cls;
1533 uint16_t hello_size;
1534 struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage *radioHeader;
1535 const struct GNUNET_MessageHeader *hello;
1537 hello = plugin->env->get_our_hello ();
1538 hello_size = GNUNET_HELLO_size ((struct GNUNET_HELLO_Message *) hello);
1539 GNUNET_assert (sizeof (struct WlanHeader) + hello_size <= WLAN_MTU);
1540 size = sizeof (struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage) + hello_size;
1542 char buf[size] GNUNET_ALIGN;
1544 LOG (GNUNET_ERROR_TYPE_DEBUG,
1545 "Sending %u byte HELLO beacon\n",
1546 (unsigned int) size);
1547 radioHeader = (struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage*) buf;
1548 get_radiotap_header (NULL, radioHeader, size);
1549 get_wlan_header (plugin, &radioHeader->frame, &bc_all_mac, size);
1550 memcpy (&radioHeader[1], hello, hello_size);
1552 GNUNET_HELPER_send (plugin->suid_helper,
1553 &radioHeader->header,
1554 GNUNET_YES /* can drop */,
1556 GNUNET_STATISTICS_update (plugin->env->stats, _("# HELLO beacons sent via Bluetooth"),
1559 plugin->beacon_task =
1560 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply
1561 (HELLO_BEACON_SCALING_FACTOR,
1562 plugin->mac_count + 1),
1570 * Another peer has suggested an address for this
1571 * peer and transport plugin. Check that this could be a valid
1572 * address. If so, consider adding it to the list
1575 * @param cls closure
1576 * @param addr pointer to the address
1577 * @param addrlen length of addr
1578 * @return GNUNET_OK if this is a plausible address for this peer
1582 bluetooth_plugin_address_suggested (void *cls, const void *addr, size_t addrlen)
1584 struct Plugin *plugin = cls;
1585 struct WlanAddress *wa = (struct WlanAddress *) addr;
1587 if (addrlen != sizeof (struct WlanAddress))
1589 GNUNET_break_op (0);
1590 return GNUNET_SYSERR;
1592 if (GNUNET_YES != plugin->have_mac)
1594 LOG (GNUNET_ERROR_TYPE_DEBUG,
1595 "Rejecting MAC `%s': I don't know my MAC!\n",
1596 mac_to_string (addr));
1597 return GNUNET_NO; /* don't know my MAC */
1599 if (0 != memcmp (&wa->mac,
1600 &plugin->mac_address,
1603 LOG (GNUNET_ERROR_TYPE_DEBUG,
1604 "Rejecting MAC `%s': not my MAC!\n",
1605 mac_to_string (addr));
1606 return GNUNET_NO; /* not my MAC */
1613 * Function called for a quick conversion of the binary address to
1614 * a numeric address. Note that the caller must not free the
1615 * address and that the next call to this function is allowed
1616 * to override the address again.
1618 * @param cls closure
1619 * @param addr binary address
1620 * @param addrlen length of the address
1621 * @return string representing the same address
1624 bluetooth_plugin_address_to_string (void *cls, const void *addr, size_t addrlen)
1626 const struct GNUNET_TRANSPORT_WLAN_MacAddress *mac;
1627 static char macstr[36];
1629 if (sizeof (struct WlanAddress) != addrlen)
1634 mac = &((struct WlanAddress *) addr)->mac;
1635 GNUNET_snprintf (macstr, sizeof (macstr), "%s.%u.%s",
1636 PLUGIN_NAME, ntohl (((struct WlanAddress *) addr)->options),
1637 mac_to_string (mac));
1643 * Convert the transports address to a nice, human-readable format.
1645 * @param cls closure
1646 * @param type name of the transport that generated the address
1647 * @param addr one of the addresses of the host, NULL for the last address
1648 * the specific address format depends on the transport
1649 * @param addrlen length of the address
1650 * @param numeric should (IP) addresses be displayed in numeric form?
1651 * @param timeout after how long should we give up?
1652 * @param asc function to call on each string
1653 * @param asc_cls closure for asc
1656 bluetooth_plugin_address_pretty_printer (void *cls, const char *type,
1657 const void *addr, size_t addrlen,
1659 struct GNUNET_TIME_Relative timeout,
1660 GNUNET_TRANSPORT_AddressStringCallback asc,
1665 if (sizeof (struct WlanAddress) != addrlen)
1667 /* invalid address */
1668 LOG (GNUNET_ERROR_TYPE_WARNING,
1669 _("Bluetooth address with invalid size encountered\n"));
1670 asc (asc_cls, NULL);
1673 ret = GNUNET_strdup (bluetooth_plugin_address_to_string(NULL, addr, addrlen));
1676 asc (asc_cls, NULL);
1681 * Exit point from the plugin.
1683 * @param cls pointer to the api struct
1686 libgnunet_plugin_transport_bluetooth_done (void *cls)
1688 struct WlanAddress wa;
1689 struct GNUNET_HELLO_Address *address;
1690 struct GNUNET_TRANSPORT_PluginFunctions *api = cls;
1691 struct Plugin *plugin = api->cls;
1692 struct MacEndpoint *endpoint;
1693 struct MacEndpoint *endpoint_next;
1701 if (GNUNET_YES == plugin->have_mac)
1703 memset (&wa, 0, sizeof(wa));
1704 wa.options = htonl (plugin->options);
1705 wa.mac = plugin->mac_address;
1706 address = GNUNET_HELLO_address_allocate (plugin->env->my_identity,
1707 PLUGIN_NAME, &wa, sizeof (struct WlanAddress),
1708 GNUNET_HELLO_ADDRESS_INFO_NONE);
1710 plugin->env->notify_address (plugin->env->cls, GNUNET_NO, address);
1711 plugin->have_mac = GNUNET_NO;
1713 GNUNET_HELLO_address_free (address);
1716 if (GNUNET_SCHEDULER_NO_TASK != plugin->beacon_task)
1718 GNUNET_SCHEDULER_cancel (plugin->beacon_task);
1719 plugin->beacon_task = GNUNET_SCHEDULER_NO_TASK;
1721 if (NULL != plugin->suid_helper)
1723 GNUNET_HELPER_stop (plugin->suid_helper, GNUNET_NO);
1724 plugin->suid_helper = NULL;
1726 endpoint_next = plugin->mac_head;
1727 while (NULL != (endpoint = endpoint_next))
1729 endpoint_next = endpoint->next;
1730 free_macendpoint (endpoint);
1732 if (NULL != plugin->fragment_data_tokenizer)
1734 GNUNET_SERVER_mst_destroy (plugin->fragment_data_tokenizer);
1735 plugin->fragment_data_tokenizer = NULL;
1737 if (NULL != plugin->wlan_header_payload_tokenizer)
1739 GNUNET_SERVER_mst_destroy (plugin->wlan_header_payload_tokenizer);
1740 plugin->wlan_header_payload_tokenizer = NULL;
1742 if (NULL != plugin->helper_payload_tokenizer)
1744 GNUNET_SERVER_mst_destroy (plugin->helper_payload_tokenizer);
1745 plugin->helper_payload_tokenizer = NULL;
1747 GNUNET_free_non_null (plugin->interface);
1748 GNUNET_free (plugin);
1755 * Function called to convert a string address to
1758 * @param cls closure ('struct Plugin*')
1759 * @param addr string address
1760 * @param addrlen length of the address
1761 * @param buf location to store the buffer
1762 * @param added location to store the number of bytes in the buffer.
1763 * If the function returns GNUNET_SYSERR, its contents are undefined.
1764 * @return GNUNET_OK on success, GNUNET_SYSERR on failure
1767 bluetooth_string_to_address (void *cls, const char *addr, uint16_t addrlen,
1768 void **buf, size_t *added)
1770 struct WlanAddress *wa;
1776 if ((NULL == addr) || (addrlen == 0))
1779 return GNUNET_SYSERR;
1781 if ('\0' != addr[addrlen - 1])
1784 return GNUNET_SYSERR;
1786 if (strlen (addr) != addrlen - 1)
1789 return GNUNET_SYSERR;
1792 if (8 != SSCANF (addr,
1793 "%9s.%u.%X:%X:%X:%X:%X:%X",
1795 &a[0], &a[1], &a[2], &a[3], &a[4], &a[5]))
1798 return GNUNET_SYSERR;
1800 wa = GNUNET_new (struct WlanAddress);
1802 wa->mac.mac[i] = a[i];
1803 wa->options = htonl (0);
1805 *added = sizeof (struct WlanAddress);
1810 bluetooth_plugin_update_session_timeout (void *cls,
1811 const struct GNUNET_PeerIdentity *peer,
1812 struct Session *session)
1814 if (GNUNET_SCHEDULER_NO_TASK != session->timeout_task)
1815 GNUNET_SCHEDULER_cancel (session->timeout_task);
1816 session->timeout_task = GNUNET_SCHEDULER_add_delayed (
1817 GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT, &session_timeout, session);
1823 * Entry point for the plugin.
1825 * @param cls closure, the 'struct GNUNET_TRANSPORT_PluginEnvironment*'
1826 * @return the 'struct GNUNET_TRANSPORT_PluginFunctions*' or NULL on error
1829 libgnunet_plugin_transport_bluetooth_init (void *cls)
1831 struct GNUNET_TRANSPORT_PluginEnvironment *env = cls;
1832 struct GNUNET_TRANSPORT_PluginFunctions *api;
1833 struct Plugin *plugin;
1835 unsigned long long testmode;
1838 /* check for 'special' mode */
1839 if (NULL == env->receive)
1841 /* run in 'stub' mode (i.e. as part of gnunet-peerinfo), don't fully
1842 initialze the plugin or the API */
1843 api = GNUNET_new (struct GNUNET_TRANSPORT_PluginFunctions);
1845 api->address_pretty_printer = &bluetooth_plugin_address_pretty_printer;
1846 api->address_to_string = &bluetooth_plugin_address_to_string;
1847 api->string_to_address = &bluetooth_string_to_address;
1852 /* check configuration */
1854 GNUNET_CONFIGURATION_have_value (env->cfg, "transport-bluetooth", "TESTMODE")) &&
1856 GNUNET_CONFIGURATION_get_value_number (env->cfg, "transport-bluetooth",
1857 "TESTMODE", &testmode)) ||
1860 GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
1861 "transport-bluetooth", "TESTMODE");
1864 binary = GNUNET_OS_get_libexec_binary_path ("gnunet-helper-transport-bluetooth");
1865 if ( (0 == testmode) &&
1866 (GNUNET_YES != GNUNET_OS_check_helper_binary (binary, GNUNET_YES, NULL)) )
1868 LOG (GNUNET_ERROR_TYPE_ERROR,
1869 _("Helper binary `%s' not SUID, cannot run bluetooth transport\n"),
1870 "gnunet-helper-transport-bluetooth");
1871 GNUNET_free (binary);
1874 GNUNET_free (binary);
1876 GNUNET_CONFIGURATION_get_value_string
1877 (env->cfg, "transport-bluetooth", "INTERFACE",
1880 GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
1881 "transport-bluetooth", "INTERFACE");
1885 plugin = GNUNET_new (struct Plugin);
1886 plugin->interface = interface;
1888 GNUNET_STATISTICS_set (plugin->env->stats, _("# Bluetooth sessions allocated"),
1890 GNUNET_STATISTICS_set (plugin->env->stats, _("# Bluetooth MAC endpoints allocated"),
1892 GNUNET_BANDWIDTH_tracker_init (&plugin->tracker,
1893 GNUNET_BANDWIDTH_value_init (100 * 1024 *
1895 plugin->fragment_data_tokenizer = GNUNET_SERVER_mst_create (&process_data, plugin);
1896 plugin->wlan_header_payload_tokenizer = GNUNET_SERVER_mst_create (&process_data, plugin);
1897 plugin->helper_payload_tokenizer = GNUNET_SERVER_mst_create (&process_data, plugin);
1898 plugin->beacon_task = GNUNET_SCHEDULER_add_now (&send_hello_beacon,
1901 plugin->options = 0;
1903 /* some compilers do not like switch on 'long long'... */
1904 switch ((unsigned int) testmode)
1906 case 0: /* normal */
1907 plugin->helper_argv[0] = (char *) "gnunet-helper-transport-bluetooth";
1908 plugin->helper_argv[1] = interface;
1909 plugin->helper_argv[2] = NULL;
1910 plugin->suid_helper = GNUNET_HELPER_start (GNUNET_NO,
1911 "gnunet-helper-transport-bluetooth",
1912 plugin->helper_argv,
1913 &handle_helper_message,
1917 case 1: /* testmode, peer 1 */
1918 plugin->helper_argv[0] = (char *) "gnunet-helper-transport-wlan-dummy";
1919 plugin->helper_argv[1] = (char *) "1";
1920 plugin->helper_argv[2] = NULL;
1921 plugin->suid_helper = GNUNET_HELPER_start (GNUNET_NO,
1922 "gnunet-helper-transport-wlan-dummy",
1923 plugin->helper_argv,
1924 &handle_helper_message,
1928 case 2: /* testmode, peer 2 */
1929 plugin->helper_argv[0] = (char *) "gnunet-helper-transport-wlan-dummy";
1930 plugin->helper_argv[1] = (char *) "2";
1931 plugin->helper_argv[2] = NULL;
1932 plugin->suid_helper = GNUNET_HELPER_start (GNUNET_NO,
1933 "gnunet-helper-transport-wlan-dummy",
1934 plugin->helper_argv,
1935 &handle_helper_message,
1943 api = GNUNET_new (struct GNUNET_TRANSPORT_PluginFunctions);
1945 api->send = &bluetooth_plugin_send;
1946 api->get_session = &bluetooth_plugin_get_session;
1947 api->disconnect_peer = &bluetooth_plugin_disconnect_peer;
1948 api->disconnect_session = &bluetooth_plugin_disconnect_session;
1949 api->query_keepalive_factor = &bluetooth_query_keepalive_factor;
1950 api->address_pretty_printer = &bluetooth_plugin_address_pretty_printer;
1951 api->check_address = &bluetooth_plugin_address_suggested;
1952 api->address_to_string = &bluetooth_plugin_address_to_string;;
1953 api->string_to_address = &bluetooth_string_to_address;
1954 api->get_network = &bluetooth_get_network;
1955 api->update_session_timeout = &bluetooth_plugin_update_session_timeout;
1961 /* end of plugin_transport_bluetooth.c */