2 This file is part of GNUnet.
3 (C) 2010, 2011, 2012 Christian Grothoff (and other contributing authors)
4 Copyright (c) 2007, 2008, Andy Green <andy@warmcat.com>
5 Copyright (C) 2009 Thomas d'Otreppe
7 GNUnet is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published
9 by the Free Software Foundation; either version 3, or (at your
10 option) any later version.
12 GNUnet is distributed in the hope that it will be useful, but
13 WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNUnet; see the file COPYING. If not, write to the
19 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA.
22 #include "gnunet_config.h"
26 #include "gnunet_util_lib.h"
31 #include <bluetooth/bluetooth.h>
32 #include <bluetooth/hci.h>
33 #include <bluetooth/hci_lib.h>
34 #include <bluetooth/rfcomm.h>
35 #include <bluetooth/sdp.h>
36 #include <bluetooth/sdp_lib.h>
41 #include <sys/ioctl.h>
42 #include <sys/param.h>
43 #include <sys/socket.h>
45 #include <sys/types.h>
49 #include "plugin_transport_wlan.h"
50 #include "gnunet_protocols.h"
54 * Maximum number of ports assignable for RFCOMMM protocol.
59 * Maximum size of a message allowed in either direction
60 * (used for our receive and sent buffers).
66 * Maximum number of loops without inquiring for new devices.
71 /* Maximum size of the interface's name */
78 * A copy of the MAC Address.
80 struct GNUNET_TRANSPORT_WLAN_MacAddress_Copy
82 UINT8 mac[MAC_ADDR_SIZE];
86 * The UUID used for the SDP service.
87 * {31191E56-FA7E-4517-870E-71B86BBCC52F}
89 #define GNUNET_BLUETOOTH_SDP_UUID \
91 0x31, 0x19, 0x1E, 0x56, \
95 0x71, 0xB8, 0x6B, 0xBC, 0xC5, 0x2F \
100 * struct for storing the information of the hardware. There is only
106 * Name of the interface, not necessarily 0-terminated (!).
108 char iface[IFNAMSIZ];
114 struct GNUNET_NETWORK_Handle *handle;
117 * MAC address of our own bluetooth interface.
119 struct GNUNET_TRANSPORT_WLAN_MacAddress_Copy pl_mac;
122 * file descriptor for the rfcomm socket
127 * MAC address of our own bluetooth interface.
129 struct GNUNET_TRANSPORT_WLAN_MacAddress pl_mac;
134 sdp_session_t *session ;
139 * IO buffer used for buffering data in transit (to wireless or to stdout).
144 * How many bytes of data are stored in 'buf' for transmission right now?
145 * Data always starts at offset 0 and extends to 'size'.
150 * How many bytes that were stored in 'buf' did we already write to the
151 * destination? Always smaller than 'size'.
156 * Buffered data; twice the maximum allowed message size as we add some
159 char buf[MAXLINE * 2];
164 * Devices buffer used to keep a list with all the discoverable devices in
165 * order to send them HELLO messages one by one when it receive a broadcast message.
167 struct BroadcastMessages
169 /* List with the discoverable devices' addresses */
170 bdaddr_t devices[MAX_PORTS];
172 /* List with the open sockets */
176 /* The number of the devices */
179 /* The current position */
187 * Address used to identify the broadcast messages.
189 static struct GNUNET_TRANSPORT_WLAN_MacAddress broadcast_address = {{255, 255, 255, 255, 255, 255}};
192 * Buffer with the discoverable devices.
194 static struct BroadcastMessages neighbours;
196 static int searching_devices_count = 0;
200 * Buffer for data read from stdin to be transmitted to the bluetooth device
202 static struct SendBuffer write_pout;
205 * Buffer for data read from the bluetooth device to be transmitted to stdout.
207 static struct SendBuffer write_std;
210 /* ****** this are the same functions as the ones used in gnunet-helper-transport-wlan.c ****** */
213 * To what multiple do we align messages? 8 byte should suffice for everyone
216 #define ALIGN_FACTOR 8
219 * Smallest supported message.
221 #define MIN_BUFFER_SIZE sizeof (struct GNUNET_MessageHeader)
225 * Functions with this signature are called whenever a
226 * complete message is received by the tokenizer.
229 * @param message the actual message
231 typedef void (*MessageTokenizerCallback) (void *cls,
233 GNUNET_MessageHeader *
237 * Handle to a message stream tokenizer.
239 struct MessageStreamTokenizer
243 * Function to call on completed messages.
245 MessageTokenizerCallback cb;
253 * Size of the buffer (starting at 'hdr').
258 * How many bytes in buffer have we already processed?
263 * How many bytes in buffer are valid right now?
268 * Beginning of the buffer. Typed like this to force alignment.
270 struct GNUNET_MessageHeader *hdr;
276 * Create a message stream tokenizer.
278 * @param cb function to call on completed messages
279 * @param cb_cls closure for cb
280 * @return handle to tokenizer
282 static struct MessageStreamTokenizer *
283 mst_create (MessageTokenizerCallback cb,
286 struct MessageStreamTokenizer *ret;
288 ret = malloc (sizeof (struct MessageStreamTokenizer));
291 fprintf (stderr, "Failed to allocate buffer for tokenizer\n");
294 ret->hdr = malloc (MIN_BUFFER_SIZE);
295 if (NULL == ret->hdr)
297 fprintf (stderr, "Failed to allocate buffer for alignment\n");
300 ret->curr_buf = MIN_BUFFER_SIZE;
302 ret->cb_cls = cb_cls;
310 * Add incoming data to the receive buffer and call the
311 * callback for all complete messages.
313 * @param mst tokenizer to use
314 * @param buf input data to add
315 * @param size number of bytes in buf
316 * @return GNUNET_OK if we are done processing (need more data)
317 * GNUNET_SYSERR if the data stream is corrupt
320 mst_receive (struct MessageStreamTokenizer *mst,
321 const char *buf, size_t size)
323 const struct GNUNET_MessageHeader *hdr;
328 unsigned long offset;
332 ibuf = (char *) mst->hdr;
336 if (mst->pos < mst->off)
338 //fprintf (stderr, "We processed too many bytes!\n");
339 return GNUNET_SYSERR;
341 if ((mst->curr_buf - mst->off < sizeof (struct GNUNET_MessageHeader)) ||
342 (0 != (mst->off % ALIGN_FACTOR)))
344 /* need to align or need more space */
345 mst->pos -= mst->off;
346 memmove (ibuf, &ibuf[mst->off], mst->pos);
349 if (mst->pos - mst->off < sizeof (struct GNUNET_MessageHeader))
352 GNUNET_MIN (sizeof (struct GNUNET_MessageHeader) -
353 (mst->pos - mst->off), size);
354 memcpy (&ibuf[mst->pos], buf, delta);
359 if (mst->pos - mst->off < sizeof (struct GNUNET_MessageHeader))
361 //FIXME should I reset ??
366 hdr = (const struct GNUNET_MessageHeader *) &ibuf[mst->off];
367 want = ntohs (hdr->size);
368 if (want < sizeof (struct GNUNET_MessageHeader))
371 "Received invalid message from stdin\n");
372 return GNUNET_SYSERR;
374 if ((mst->curr_buf - mst->off < want) &&
377 /* need more space */
378 mst->pos -= mst->off;
379 memmove (ibuf, &ibuf[mst->off], mst->pos);
382 if (want > mst->curr_buf)
386 fprintf (stderr, "Error! We should proceeded 0 bytes\n");
387 return GNUNET_SYSERR;
389 mst->hdr = realloc (mst->hdr, want);
390 if (NULL == mst->hdr)
392 fprintf (stderr, "Failed to allocate buffer for alignment\n");
395 ibuf = (char *) mst->hdr;
396 mst->curr_buf = want;
398 hdr = (const struct GNUNET_MessageHeader *) &ibuf[mst->off];
399 if (mst->pos - mst->off < want)
401 delta = GNUNET_MIN (want - (mst->pos - mst->off), size);
402 if (mst->pos + delta > mst->curr_buf)
404 fprintf (stderr, "The size of the buffer will be exceeded!\n");
405 return GNUNET_SYSERR;
407 memcpy (&ibuf[mst->pos], buf, delta);
412 if (mst->pos - mst->off < want)
414 //FIXME should I use this?
419 mst->cb (mst->cb_cls, hdr);
421 if (mst->off == mst->pos)
423 /* reset to beginning of buffer, it's free right now! */
430 fprintf (stderr, "There should some valid bytes in the buffer on this stage\n");
431 return GNUNET_SYSERR;
435 if (size < sizeof (struct GNUNET_MessageHeader))
437 offset = (unsigned long) buf;
438 need_align = (0 != offset % ALIGN_FACTOR) ? GNUNET_YES : GNUNET_NO;
439 if (GNUNET_NO == need_align)
441 /* can try to do zero-copy and process directly from original buffer */
442 hdr = (const struct GNUNET_MessageHeader *) buf;
443 want = ntohs (hdr->size);
444 if (want < sizeof (struct GNUNET_MessageHeader))
447 "Received invalid message from stdin\n");
450 return GNUNET_SYSERR;
453 break; /* or not, buffer incomplete, so copy to private buffer... */
454 mst->cb (mst->cb_cls, hdr);
460 /* need to copy to private buffer to align;
461 * yes, we go a bit more spagetti than usual here */
467 if (size + mst->pos > mst->curr_buf)
469 mst->hdr = realloc (mst->hdr, size + mst->pos);
470 if (NULL == mst->hdr)
472 fprintf (stderr, "Failed to allocate buffer for alignment\n");
475 ibuf = (char *) mst->hdr;
476 mst->curr_buf = size + mst->pos;
478 if (mst->pos + size > mst->curr_buf)
481 "Assertion failed\n");
484 memcpy (&ibuf[mst->pos], buf, size);
491 * Destroys a tokenizer.
493 * @param mst tokenizer to destroy
496 mst_destroy (struct MessageStreamTokenizer *mst)
503 * Calculate crc32, the start of the calculation
505 * @param buf buffer to calc the crc
506 * @param len len of the buffer
510 calc_crc_osdep (const unsigned char *buf, size_t len)
512 static const unsigned long int crc_tbl_osdep[256] = {
513 0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, 0x076DC419, 0x706AF48F,
514 0xE963A535, 0x9E6495A3,
515 0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988, 0x09B64C2B, 0x7EB17CBD,
516 0xE7B82D07, 0x90BF1D91,
517 0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE, 0x1ADAD47D, 0x6DDDE4EB,
518 0xF4D4B551, 0x83D385C7,
519 0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC, 0x14015C4F, 0x63066CD9,
520 0xFA0F3D63, 0x8D080DF5,
521 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172, 0x3C03E4D1, 0x4B04D447,
522 0xD20D85FD, 0xA50AB56B,
523 0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940, 0x32D86CE3, 0x45DF5C75,
524 0xDCD60DCF, 0xABD13D59,
525 0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116, 0x21B4F4B5, 0x56B3C423,
526 0xCFBA9599, 0xB8BDA50F,
527 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924, 0x2F6F7C87, 0x58684C11,
528 0xC1611DAB, 0xB6662D3D,
529 0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A, 0x71B18589, 0x06B6B51F,
530 0x9FBFE4A5, 0xE8B8D433,
531 0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818, 0x7F6A0DBB, 0x086D3D2D,
532 0x91646C97, 0xE6635C01,
533 0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E, 0x6C0695ED, 0x1B01A57B,
534 0x8208F4C1, 0xF50FC457,
535 0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA, 0xFCB9887C, 0x62DD1DDF, 0x15DA2D49,
536 0x8CD37CF3, 0xFBD44C65,
537 0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2, 0x4ADFA541, 0x3DD895D7,
538 0xA4D1C46D, 0xD3D6F4FB,
539 0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0, 0x44042D73, 0x33031DE5,
540 0xAA0A4C5F, 0xDD0D7CC9,
541 0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086, 0x5768B525, 0x206F85B3,
542 0xB966D409, 0xCE61E49F,
543 0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4, 0x59B33D17, 0x2EB40D81,
544 0xB7BD5C3B, 0xC0BA6CAD,
545 0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A, 0xEAD54739, 0x9DD277AF,
546 0x04DB2615, 0x73DC1683,
547 0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8, 0xE40ECF0B, 0x9309FF9D,
548 0x0A00AE27, 0x7D079EB1,
549 0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE, 0xF762575D, 0x806567CB,
550 0x196C3671, 0x6E6B06E7,
551 0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC, 0xF9B9DF6F, 0x8EBEEFF9,
552 0x17B7BE43, 0x60B08ED5,
553 0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252, 0xD1BB67F1, 0xA6BC5767,
554 0x3FB506DD, 0x48B2364B,
555 0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60, 0xDF60EFC3, 0xA867DF55,
556 0x316E8EEF, 0x4669BE79,
557 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236, 0xCC0C7795, 0xBB0B4703,
558 0x220216B9, 0x5505262F,
559 0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04, 0xC2D7FFA7, 0xB5D0CF31,
560 0x2CD99E8B, 0x5BDEAE1D,
561 0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A, 0x9C0906A9, 0xEB0E363F,
562 0x72076785, 0x05005713,
563 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38, 0x92D28E9B, 0xE5D5BE0D,
564 0x7CDCEFB7, 0x0BDBDF21,
565 0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E, 0x81BE16CD, 0xF6B9265B,
566 0x6FB077E1, 0x18B74777,
567 0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C, 0x8F659EFF, 0xF862AE69,
568 0x616BFFD3, 0x166CCF45,
569 0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2, 0xA7672661, 0xD06016F7,
570 0x4969474D, 0x3E6E77DB,
571 0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0, 0xA9BCAE53, 0xDEBB9EC5,
572 0x47B2CF7F, 0x30B5FFE9,
573 0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6, 0xBAD03605, 0xCDD70693,
574 0x54DE5729, 0x23D967BF,
575 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94, 0xB40BBE37, 0xC30C8EA1,
576 0x5A05DF1B, 0x2D02EF8D
579 unsigned long crc = 0xFFFFFFFF;
581 for (; len > 0; len--, buf++)
582 crc = crc_tbl_osdep[(crc ^ *buf) & 0xFF] ^ (crc >> 8);
588 * Calculate and check crc of the bluetooth packet
590 * @param buf buffer of the packet, with len + 4 bytes of data,
591 * the last 4 bytes being the checksum
592 * @param len length of the payload in data
593 * @return 0 on success (checksum matches), 1 on error
596 check_crc_buf_osdep (const unsigned char *buf, size_t len)
600 crc = calc_crc_osdep (buf, len);
602 if (((crc) & 0xFF) == buf[0] && ((crc >> 8) & 0xFF) == buf[1] &&
603 ((crc >> 16) & 0xFF) == buf[2] && ((crc >> 24) & 0xFF) == buf[3])
610 /* ************** end of clone ***************** */
614 * Function used to get the code of last error and to print the type of error.
619 LPVOID lpMsgBuf = NULL;
621 if (FormatMessage (FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
622 NULL, GetLastError(), 0, (LPTSTR) &lpMsgBuf, 0, NULL))
623 fprintf (stderr, "%s\n", (char *)lpMsgBuf);
625 fprintf (stderr, "Failed to format the message for the last error! Error number : %d\n", GetLastError());
629 * Function used to initialize the Windows Sockets
632 initialize_windows_sockets()
635 WORD wVersionRequested = MAKEWORD (2, 0);
636 if (WSAStartup (wVersionRequested, &wsaData) != NO_ERROR)
638 fprintf (stderr , "Error initializing window sockets!\n");
645 * Function used to convert the GUID.
646 * @param bytes the GUID represented as a char array
647 * @param uuid pointer to the GUID
650 convert_guid(char *bytes, GUID * uuid)
653 uuid->Data1 = ((bytes[0] << 24) & 0xff000000) | ((bytes[1] << 16) & 0x00ff0000) | ((bytes[2] << 8) & 0x0000ff00) | (bytes[3] & 0x000000ff);
654 uuid->Data2 = ((bytes[4] << 8) & 0xff00) | (bytes[5] & 0x00ff);
655 uuid->Data3 = ((bytes[6] << 8) & 0xff00) | (bytes[7] & 0x00ff);
657 for (i = 0; i < 8; i++)
659 uuid->Data4[i] = bytes[i + 8];
666 * Function for assigning a port number
668 * @param socket the socket used to bind
669 * @param addr pointer to the rfcomm address
670 * @return 0 on success
673 bind_socket (int socket, struct sockaddr_rc *addr)
677 /* Bind every possible port (from 0 to 30) and stop when binding doesn't fail */
678 //FIXME : it should start from port 1, but on my computer it doesn't work :)
679 for (port = 3; port <= 30; port++)
681 addr->rc_channel = port;
682 status = bind (socket, (struct sockaddr *) addr, sizeof (struct sockaddr_rc));
693 * Function used for creating the service record and registering it.
695 * @param dev pointer to the device struct
696 * @return 0 on success
699 register_service (struct HardwareInfos *dev)
701 /* advertise the service */
702 CSADDR_INFO addr_info;
705 unsigned char uuid[] = GNUNET_BLUETOOTH_SDP_UUID;
707 int addr_len = sizeof (SOCKADDR_BTH);
709 /* get the port on which we are listening on */
710 memset (& addr, 0, sizeof (SOCKADDR_BTH));
711 fd = GNUNET_NETWORK_get_fd (dev->handle);
714 fprintf (stderr, "Failed to get the file descriptor\n");
717 if (SOCKET_ERROR == getsockname (fd, (SOCKADDR*)&addr, &addr_len))
719 fprintf (stderr, "Failed to get the port on which we are listening on: \n");
724 /* save the device address */
725 memcpy (&dev->pl_mac, &addr.btAddr, sizeof (BTH_ADDR));
727 /* set the address information */
728 memset (&addr_info, 0, sizeof (CSADDR_INFO));
729 addr_info.iProtocol = BTHPROTO_RFCOMM;
730 addr_info.iSocketType = SOCK_STREAM;
731 addr_info.LocalAddr.lpSockaddr = (LPSOCKADDR)&addr;
732 addr_info.LocalAddr.iSockaddrLength = sizeof (addr);
733 addr_info.RemoteAddr.lpSockaddr = (LPSOCKADDR)&addr;
734 addr_info.RemoteAddr.iSockaddrLength = sizeof (addr);
736 convert_guid((char *) uuid, &guid);
738 /* register the service */
739 memset (&wqs, 0, sizeof (WSAQUERYSET));
740 wqs.dwSize = sizeof (WSAQUERYSET);
741 wqs.dwNameSpace = NS_BTH;
742 wqs.lpszServiceInstanceName = "GNUnet Bluetooth Service";
743 wqs.lpszComment = "This is the service used by the GNUnnet plugin transport";
744 wqs.lpServiceClassId = &guid;
745 wqs.dwNumberOfCsAddrs = 1;
746 wqs.lpcsaBuffer = &addr_info ;
749 if (SOCKET_ERROR == WSASetService (&wqs , RNRSERVICE_REGISTER, 0))
751 fprintf (stderr, "Failed to register the SDP service: ");
757 fprintf (stderr, "The SDP service was registered\n");
764 * Function used for creating the service record and registering it.
766 * @param dev pointer to the device struct
767 * @param rc_channel the rfcomm channel
768 * @return 0 on success
771 register_service (struct HardwareInfos *dev, int rc_channel)
775 * 2. set the service ID, class, profile information
776 * 3. make the service record publicly browsable
777 * 4. register the RFCOMM channel
778 * 5. set the name, provider and description
779 * 6. register the service record to the local SDP server
782 uint8_t svc_uuid_int[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
783 dev->pl_mac.mac[5], dev->pl_mac.mac[4], dev->pl_mac.mac[3],
784 dev->pl_mac.mac[2], dev->pl_mac.mac[1], dev->pl_mac.mac[0]};
785 const char *service_dsc = "Bluetooth plugin services";
786 const char *service_prov = "GNUnet provider";
787 uuid_t root_uuid, rfcomm_uuid, svc_uuid;
788 sdp_list_t *root_list = 0, *rfcomm_list = 0, *proto_list = 0,
789 *access_proto_list = 0, *svc_list = 0;
790 sdp_record_t *record = 0;
791 sdp_data_t *channel = 0;
793 record = sdp_record_alloc();
795 /* Set the general service ID */
796 sdp_uuid128_create (&svc_uuid, &svc_uuid_int);
797 svc_list = sdp_list_append (0, &svc_uuid);
798 sdp_set_service_classes (record, svc_list);
799 sdp_set_service_id (record, svc_uuid);
801 /* Make the service record publicly browsable */
802 sdp_uuid16_create (&root_uuid, PUBLIC_BROWSE_GROUP);
803 root_list = sdp_list_append (0, &root_uuid);
804 sdp_set_browse_groups (record, root_list);
806 /* Register the RFCOMM channel */
807 sdp_uuid16_create (&rfcomm_uuid, RFCOMM_UUID);
808 channel = sdp_data_alloc (SDP_UINT8, &rc_channel);
809 rfcomm_list = sdp_list_append (0, &rfcomm_uuid);
810 sdp_list_append (rfcomm_list, channel);
811 proto_list = sdp_list_append (0, rfcomm_list);
813 /* Set protocol information */
814 access_proto_list = sdp_list_append (0, proto_list);
815 sdp_set_access_protos (record, access_proto_list);
817 /* Set the name, provider, and description */
818 sdp_set_info_attr (record, dev->iface, service_prov, service_dsc);
820 /* Connect to the local SDP server */
821 dev->session = sdp_connect (BDADDR_ANY, BDADDR_LOCAL, SDP_RETRY_IF_BUSY);
825 fprintf (stderr, "Failed to connect to the SDP server on interface `%.*s': %s\n",
826 IFNAMSIZ, dev->iface, strerror (errno));
831 /* Register the service record */
832 if (sdp_record_register (dev->session, record, 0) < 0)
834 fprintf (stderr, "Failed to register a service record on interface `%.*s': %s\n",
835 IFNAMSIZ, dev->iface, strerror (errno));
841 sdp_data_free (channel);
842 sdp_list_free (root_list, 0);
843 sdp_list_free (rfcomm_list, 0);
844 sdp_list_free (proto_list, 0);
845 sdp_list_free (access_proto_list, 0);
846 sdp_list_free (svc_list, 0);
847 sdp_record_free (record);
855 * Function for searching and browsing for a service. This will return the
856 * port number on which the service is running.
858 * @param dest target address
862 get_channel(const char *dest)
866 DWORD wqs_len = sizeof (WSAQUERYSET);
870 unsigned char uuid[] = GNUNET_BLUETOOTH_SDP_UUID;
871 convert_guid ((char *) uuid, &guid);
873 wqs = (WSAQUERYSET*)malloc (wqs_len);
874 ZeroMemory (wqs, wqs_len);
876 wqs->dwSize = sizeof (WSAQUERYSET) ;
877 wqs->lpServiceClassId = &guid;
878 wqs->dwNameSpace = NS_BTH;
879 wqs->dwNumberOfCsAddrs = 0;
880 wqs->lpszContext = (LPSTR)dest;
882 if (SOCKET_ERROR == WSALookupServiceBegin (wqs, LUP_FLUSHCACHE | LUP_RETURN_ALL, &h))
884 if (GetLastError() == WSASERVICE_NOT_FOUND)
886 fprintf (stderr, "WARNING! The device with address %s wasn't found. Skipping the message!", dest);
891 fprintf (stderr, "Failed to find the port number: ");
898 /* search the sdp service */
901 if (SOCKET_ERROR == WSALookupServiceNext (h, LUP_FLUSHCACHE | LUP_RETURN_ALL, &wqs_len, wqs))
903 int error = WSAGetLastError();
909 wqs = (WSAQUERYSET*)malloc (wqs_len);
912 fprintf (stderr, "Failed! The address was valid but there was no data record of requested type\n");
919 fprintf (stderr, "Failed to look over the services: ");
921 WSALookupServiceEnd (h);
927 channel = ((SOCKADDR_BTH*)wqs->lpcsaBuffer->RemoteAddr.lpSockaddr)->port;
932 WSALookupServiceEnd (h);
938 * Function used for searching and browsing for a service. This will return the
939 * port number on which the service is running.
941 * @param dev pointer to the device struct
942 * @param dest target address
946 get_channel(struct HardwareInfos *dev, bdaddr_t dest)
949 * 1. detect all nearby devices
950 * 2. for each device:
951 * 2.1. connect to the SDP server running
952 * 2.2. get a list of service records with the specific UUID
953 * 2.3. for each service record get a list of the protocol sequences and get
956 uint8_t svc_uuid_int[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
957 dest.b[5], dest.b[4], dest.b[3],
958 dest.b[2], dest.b[1], dest.b[0]};
959 sdp_session_t *session = 0;
960 sdp_list_t *search_list = 0, *attrid_list = 0, *response_list = 0, *it = 0;
962 uint32_t range = 0x0000ffff;
963 uint8_t channel = -1;
965 /* Connect to the local SDP server */
966 session = sdp_connect (BDADDR_ANY, &dest, 0);
969 fprintf (stderr, "Failed to connect to the SDP server on interface `%.*s': %s\n",
970 IFNAMSIZ, dev->iface, strerror (errno));
974 sdp_uuid128_create (&svc_uuid, &svc_uuid_int);
975 search_list = sdp_list_append (0, &svc_uuid);
976 attrid_list = sdp_list_append (0, &range);
978 if (sdp_service_search_attr_req (session, search_list,
979 SDP_ATTR_REQ_RANGE, attrid_list, &response_list) == 0)
981 for (it = response_list; it; it = it->next)
983 sdp_record_t *record = (sdp_record_t*) it->data;
984 sdp_list_t *proto_list = 0;
985 if (sdp_get_access_protos (record, &proto_list) == 0)
987 channel = sdp_get_proto_port (proto_list, RFCOMM_UUID);
988 sdp_list_free (proto_list, 0);
990 sdp_record_free (record);
994 sdp_list_free (search_list, 0);
995 sdp_list_free (attrid_list, 0);
996 sdp_list_free (response_list, 0);
1001 fprintf (stderr, "Failed to find the listening channel for interface `%.*s': %s\n",
1002 IFNAMSIZ, dev->iface, strerror (errno));
1009 * Read from the socket and put the result into the buffer for transmission to 'stdout'.
1011 * @param sock file descriptor for reading
1012 * @param buf buffer to read to; first bytes will be the 'struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame',
1013 * followed by the actual payload
1014 * @param buf_size size of the buffer
1015 * @param ri where to write radiotap_rx info
1016 * @return number of bytes written to 'buf'
1019 read_from_the_socket (void *sock,
1020 unsigned char *buf, size_t buf_size,
1021 struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage *ri)
1023 unsigned char tmpbuf[buf_size];
1027 count = GNUNET_NETWORK_socket_recv ((struct GNUNET_NETWORK_Handle *)sock, tmpbuf, buf_size);
1029 count = read (*((int *)sock), tmpbuf, buf_size);
1034 if (EAGAIN == errno)
1039 fprintf (stderr, "Failed to read from the HCI socket: %s\n", strerror (errno));
1046 /* Get the channel used */
1048 struct sockaddr_rc rc_addr = { 0 };
1050 memset (&rc_addr, 0, sizeof (rc_addr));
1051 len = sizeof (rc_addr);
1052 if (0 > getsockname (*((int *)sock), (struct sockaddr *) &rc_addr, (socklen_t *) &len))
1054 fprintf (stderr, "getsockname() call failed : %s\n", strerror (errno));
1058 memset (ri, 0, sizeof (*ri));
1059 ri->ri_channel = rc_addr.rc_channel;
1062 /* Detect CRC32 at the end */
1063 if (0 == check_crc_buf_osdep (tmpbuf, count - sizeof (uint32_t)))
1065 count -= sizeof(uint32_t);
1068 memcpy (buf, tmpbuf, count);
1075 * Open the bluetooth interface for reading/writing
1077 * @param dev pointer to the device struct
1078 * @return 0 on success
1081 open_device (struct HardwareInfos *dev)
1086 /* bind the RFCOMM socket to the interface */
1087 addr.addressFamily = AF_BTH;
1089 addr.port = BT_PORT_ANY;
1092 GNUNET_NETWORK_socket_bind (dev->handle, (const SOCKADDR*)&addr, sizeof (SOCKADDR_BTH)))
1094 fprintf (stderr, "Failed to bind the socket: ");
1095 if (GetLastError() == WSAENETDOWN)
1097 fprintf (stderr, "Please make sure that your Bluetooth device is ON!\n");
1104 /* start listening on the socket */
1105 if (GNUNET_NETWORK_socket_listen (dev->handle, 4) != GNUNET_OK)
1107 fprintf (stderr, "Failed to listen on the socket: ");
1112 /* register the sdp service */
1113 if (register_service(dev) != 0)
1115 fprintf (stderr, "Failed to register a service: ");
1120 int i, dev_id = -1, fd_hci;
1123 struct hci_dev_list_req list;
1124 struct hci_dev_req dev[HCI_MAX_DEV];
1125 } request; //used for detecting the local devices
1126 struct sockaddr_rc rc_addr = { 0 }; //used for binding
1128 /* Initialize the neighbour structure */
1129 neighbours.dev_id = -1;
1130 for (i = 0; i < MAX_PORTS; i++)
1131 neighbours.fds[i] = -1;
1133 /* Open a HCI socket */
1134 fd_hci = socket (AF_BLUETOOTH, SOCK_RAW, BTPROTO_HCI);
1138 fprintf (stderr, "Failed to create HCI socket: %s\n", strerror (errno));
1142 memset (&request, 0, sizeof(request));
1143 request.list.dev_num = HCI_MAX_DEV;
1145 if (ioctl (fd_hci, HCIGETDEVLIST, (void *) &request) < 0)
1147 fprintf (stderr, "ioctl(HCIGETDEVLIST) on interface `%.*s' failed: %s\n",
1148 IFNAMSIZ, dev->iface, strerror (errno));
1152 /* Search for a device with dev->iface name */
1153 for (i = 0; i < request.list.dev_num; i++)
1155 struct hci_dev_info dev_info;
1157 memset (&dev_info, 0, sizeof(struct hci_dev_info));
1158 dev_info.dev_id = request.dev[i].dev_id;
1159 strncpy (dev_info.name, dev->iface, IFNAMSIZ);
1161 if (ioctl (fd_hci, HCIGETDEVINFO, (void *) &dev_info))
1163 fprintf (stderr, "ioctl(HCIGETDEVINFO) on interface `%.*s' failed: %s\n",
1164 IFNAMSIZ, dev->iface, strerror (errno));
1168 if (strcmp (dev_info.name, dev->iface) == 0)
1171 dev_id = dev_info.dev_id; //the device was found
1173 * Copy the MAC address to the device structure
1175 memcpy (&dev->pl_mac, &dev_info.bdaddr, sizeof (bdaddr_t));
1177 /* Check if the interface is up */
1178 if (hci_test_bit (HCI_UP, (void *) &dev_info.flags) == 0)
1180 /* Bring the interface up */
1181 if (ioctl (fd_hci, HCIDEVUP, dev_info.dev_id))
1183 fprintf (stderr, "ioctl(HCIDEVUP) on interface `%.*s' failed: %s\n",
1184 IFNAMSIZ, dev->iface, strerror (errno));
1189 /* Check if the device is discoverable */
1190 if (hci_test_bit (HCI_PSCAN, (void *) &dev_info.flags) == 0 ||
1191 hci_test_bit (HCI_ISCAN, (void *) &dev_info.flags) == 0)
1193 /* Set interface Page Scan and Inqury Scan ON */
1194 struct hci_dev_req dev_req;
1196 memset (&dev_req, 0, sizeof (dev_req));
1197 dev_req.dev_id = dev_info.dev_id;
1198 dev_req.dev_opt = SCAN_PAGE | SCAN_INQUIRY;
1200 if (ioctl (fd_hci, HCISETSCAN, (unsigned long) &dev_req))
1202 fprintf (stderr, "ioctl(HCISETSCAN) on interface `%.*s' failed: %s\n",
1203 IFNAMSIZ, dev->iface, strerror (errno));
1213 /* Check if the interface was not found */
1216 fprintf (stderr, "The interface %s was not found\n", dev->iface);
1220 /* Close the hci socket */
1221 (void) close(fd_hci);
1225 /* Bind the rfcomm socket to the interface */
1226 memset (&rc_addr, 0, sizeof (rc_addr));
1227 rc_addr.rc_family = AF_BLUETOOTH;
1228 rc_addr.rc_bdaddr = *BDADDR_ANY;
1230 if (bind_socket (dev->fd_rfcomm, &rc_addr) != 0)
1232 fprintf (stderr, "Failed to bind interface `%.*s': %s\n", IFNAMSIZ,
1233 dev->iface, strerror (errno));
1237 /* Register a SDP service */
1238 if (register_service (dev, rc_addr.rc_channel) != 0)
1240 fprintf (stderr, "Failed to register a service on interface `%.*s': %s\n", IFNAMSIZ,
1241 dev->iface, strerror (errno));
1245 /* Switch socket in listening mode */
1246 if (listen (dev->fd_rfcomm, 5) == -1) //FIXME: probably we need a bigger number
1248 fprintf (stderr, "Failed to listen on socket for interface `%.*s': %s\n", IFNAMSIZ,
1249 dev->iface, strerror (errno));
1260 * Set the header to sane values to make attacks more difficult
1262 * @param taIeeeHeader pointer to the header of the packet
1263 * @param dev pointer to the Hardware_Infos struct
1265 **** copy from gnunet-helper-transport-wlan.c ****
1268 mac_set (struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame *taIeeeHeader,
1269 const struct HardwareInfos *dev)
1271 taIeeeHeader->frame_control = htons (IEEE80211_FC0_TYPE_DATA);
1272 taIeeeHeader->addr3 = mac_bssid_gnunet;
1275 memcpy (&taIeeeHeader->addr2, &dev->pl_mac, sizeof (struct GNUNET_TRANSPORT_WLAN_MacAddress));
1277 taIeeeHeader->addr2 = dev->pl_mac;
1283 * Test if the given interface name really corresponds to a bluetooth
1286 * @param iface name of the interface
1287 * @return 0 on success, 1 on error
1288 **** similar with the one from gnunet-helper-transport-wlan.c ****
1291 test_bluetooth_interface (const char *iface)
1297 ret = snprintf (strbuf, sizeof (strbuf),
1298 "/sys/class/bluetooth/%s/subsystem",
1300 if ((ret < 0) || (ret >= sizeof (strbuf)) || (0 != stat (strbuf, &sbuf)))
1303 "Did not find 802.15.1 interface `%s'. Exiting.\n",
1312 * Test incoming packets mac for being our own.
1314 * @param taIeeeHeader buffer of the packet
1315 * @param dev the Hardware_Infos struct
1316 * @return 0 if mac belongs to us, 1 if mac is for another target
1318 **** same as the one from gnunet-helper-transport-wlan.c ****
1321 mac_test (const struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame *taIeeeHeader,
1322 const struct HardwareInfos *dev)
1324 static struct GNUNET_TRANSPORT_WLAN_MacAddress all_zeros;
1326 if ( (0 == memcmp (&taIeeeHeader->addr3, &all_zeros, MAC_ADDR_SIZE)) ||
1327 (0 == memcmp (&taIeeeHeader->addr1, &all_zeros, MAC_ADDR_SIZE)) )
1328 return 0; /* some drivers set no Macs, then assume it is all for us! */
1330 if (0 != memcmp (&taIeeeHeader->addr3, &mac_bssid_gnunet, MAC_ADDR_SIZE))
1331 return 1; /* not a GNUnet ad-hoc package */
1332 if ( (0 == memcmp (&taIeeeHeader->addr1, &dev->pl_mac, MAC_ADDR_SIZE)) ||
1333 (0 == memcmp (&taIeeeHeader->addr1, &bc_all_mac, MAC_ADDR_SIZE)) )
1334 return 0; /* for us, or broadcast */
1335 return 1; /* not for us */
1340 * Process data from the stdin. Takes the message, forces the sender MAC to be correct
1341 * and puts it into our buffer for transmission to the receiver.
1343 * @param cls pointer to the device struct ('struct HardwareInfos*')
1344 * @param hdr pointer to the start of the packet
1346 **** same as the one from gnunet-helper-transport-wlan.c ****
1349 stdin_send_hw (void *cls, const struct GNUNET_MessageHeader *hdr)
1351 struct HardwareInfos *dev = cls;
1352 const struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage *header;
1353 struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame *blueheader;
1356 sendsize = ntohs (hdr->size);
1358 sizeof (struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage)) ||
1359 (GNUNET_MESSAGE_TYPE_WLAN_DATA_TO_HELPER != ntohs (hdr->type)) )
1361 fprintf (stderr, "Received malformed message\n");
1364 sendsize -= (sizeof (struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage) -
1365 sizeof (struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame));
1366 if (MAXLINE < sendsize)
1368 fprintf (stderr, "Packet too big for buffer\n");
1371 header = (const struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage *) hdr;
1372 memcpy (&write_pout.buf, &header->frame, sendsize);
1373 blueheader = (struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame *) &write_pout.buf;
1375 /* payload contains MAC address, but we don't trust it, so we'll
1376 * overwrite it with OUR MAC address to prevent mischief */
1377 mac_set (blueheader, dev);
1378 memcpy (&blueheader->addr1, &header->frame.addr1,
1379 sizeof (struct GNUNET_TRANSPORT_WLAN_MacAddress));
1380 write_pout.size = sendsize;
1385 * Broadcast a HELLO message for peer discovery
1387 * @param dev pointer to the device struct
1388 * @param dev pointer to the socket which was added to the set
1389 * @return 0 on success
1392 send_broadcast (struct HardwareInfos *dev, int *sendsocket)
1398 if ((neighbours.size == neighbours.pos && new_device == 1) || neighbours.size == 0)
1400 inquiry_devices: //skip the conditions and force a inquiry for new devices
1403 * It means that I sent HELLO messages to all the devices from the list and I should search
1404 * for new ones or that this is the first time when I do a search.
1406 inquiry_info *devices = NULL;
1407 int i, responses, max_responses = MAX_PORTS;
1410 if (neighbours.size >= MAX_PORTS)
1412 fprintf (stderr, "%.*s reached the top limit for the discovarable devices\n", IFNAMSIZ, dev->iface);
1416 /* Get the device id */
1417 if (neighbours.dev_id == -1)
1419 char addr[19] = { 0 }; //the device MAC address
1421 ba2str ((bdaddr_t *) &dev->pl_mac, addr);
1422 neighbours.dev_id = hci_devid (addr);
1423 if (neighbours.dev_id < 0)
1425 fprintf (stderr, "Failed to get the device id for interface %.*s : %s\n", IFNAMSIZ,
1426 dev->iface, strerror (errno));
1431 devices = malloc (max_responses * sizeof (inquiry_info));
1432 if (devices == NULL)
1434 fprintf (stderr, "Failed to allocate memory for inquiry info list on interface %.*s\n", IFNAMSIZ,
1439 responses = hci_inquiry (neighbours.dev_id, 8, max_responses, NULL, &devices, IREQ_CACHE_FLUSH);
1442 fprintf (stderr, "Failed to inquiry on interface %.*s\n", IFNAMSIZ, dev->iface);
1446 fprintf (stderr, "LOG : Found %d devices\n", responses); //FIXME delete it after debugging stage
1450 fprintf (stderr, "LOG : No devices discoverable\n");
1454 for (i = 0; i < responses; i++)
1462 fprintf (stderr, "%.*s reached the top limit for the discoverable devices (after inquiry)\n", IFNAMSIZ,
1467 /* Search if the address already exists on the list */
1468 for (j = 0; j < neighbours.size; j++)
1470 if (memcmp (&(devices + i)->bdaddr, &(neighbours.devices[j]), sizeof (bdaddr_t)) == 0)
1473 fprintf (stderr, "LOG : the device already exists on the list\n"); //FIXME debugging message
1480 char addr[19] = { 0 };
1482 ba2str (&(devices +i)->bdaddr, addr);
1483 fprintf (stderr, "LOG : %s was added to the list\n", addr); //FIXME debugging message
1484 memcpy (&(neighbours.devices[neighbours.size++]), &(devices + i)->bdaddr, sizeof (bdaddr_t));
1492 int connection_successful = 0;
1493 struct sockaddr_rc addr_rc = { 0 };
1495 addr_rc.rc_family = AF_BLUETOOTH;
1497 /* Try to connect to a new device from the list */
1498 while (neighbours.pos < neighbours.size)
1500 /* Check if we are already connected to this device */
1501 if (neighbours.fds[neighbours.pos] == -1)
1504 memset (&addr_rc.rc_bdaddr, 0, sizeof (addr_rc.rc_bdaddr));
1505 memcpy (&addr_rc.rc_bdaddr, &(neighbours.devices[neighbours.pos]), sizeof (addr_rc.rc_bdaddr));
1507 addr_rc.rc_channel = get_channel (dev, addr_rc.rc_bdaddr);
1509 *sendsocket = socket (AF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM);
1510 if (connect (*sendsocket, (struct sockaddr *)&addr_rc, sizeof (addr_rc)) == 0)
1512 neighbours.fds[neighbours.pos++] = *sendsocket;
1513 connection_successful = 1;
1514 char addr[19] = { 0 };
1515 ba2str (&(neighbours.devices[neighbours.pos - 1]), addr);
1516 fprintf (stderr, "LOG : Connected to %s\n", addr);
1522 char addr[19] = { 0 };
1523 errno_copy = errno; //Save a copy for later
1524 ba2str (&(neighbours.devices[neighbours.pos]), addr);
1525 fprintf (stderr, "LOG : Couldn't connect on device %s, error : %s\n", addr, strerror(errno));
1526 if (errno != ECONNREFUSED) //FIXME be sure that this works
1528 fprintf (stderr, "LOG : Removes %d device from the list\n", neighbours.pos);
1529 /* Remove the device from the list */
1530 memcpy (&neighbours.devices[neighbours.pos], &neighbours.devices[neighbours.size - 1], sizeof (bdaddr_t));
1531 memset (&neighbours.devices[neighbours.size - 1], 0, sizeof (bdaddr_t));
1532 neighbours.fds[neighbours.pos] = neighbours.fds[neighbours.size - 1];
1533 neighbours.fds[neighbours.size - 1] = -1;
1534 neighbours.size -= 1;
1537 neighbours.pos += 1;
1539 if (neighbours.pos >= neighbours.size)
1544 if (loops == MAX_LOOPS) //don't get stuck trying to connect to one device
1550 fprintf (stderr, "LOG : Search for a new device\n"); //FIXME debugging message
1551 neighbours.pos += 1;
1555 /* Cycle on the list */
1556 if (neighbours.pos == neighbours.size)
1559 searching_devices_count += 1;
1561 if (searching_devices_count == MAX_LOOPS)
1563 fprintf (stderr, "LOG : Force to inquiry for new devices\n");
1564 searching_devices_count = 0;
1565 goto inquiry_devices;
1568 /* If a new device wasn't found, search an old one */
1569 if (connection_successful == 0)
1571 int loop_check = neighbours.pos;
1572 while (neighbours.fds[neighbours.pos] == -1)
1574 if (neighbours.pos == neighbours.size)
1577 if (neighbours.pos == loop_check)
1579 if (errno_copy == ECONNREFUSED)
1581 fprintf (stderr, "LOG : No device found. Go back and search again\n"); //FIXME debugging message
1584 goto search_for_devices;
1588 return 1; // Skip the broadcast message
1592 neighbours.pos += 1;
1595 *sendsocket = neighbours.fds[neighbours.pos++];
1603 * Main function of the helper. This code accesses a bluetooth interface
1604 * forwards traffic in both directions between the bluetooth interface and
1605 * stdin/stdout of this process. Error messages are written to stderr.
1607 * @param argc number of arguments, must be 2
1608 * @param argv arguments only argument is the name of the interface (i.e. 'hci0')
1609 * @return 0 on success (never happens, as we don't return unless aborted), 1 on error
1611 **** similar to gnunet-helper-transport-wlan.c ****
1614 main (int argc, char *argv[])
1617 struct HardwareInfos dev;
1618 char readbuf[MAXLINE];
1623 struct MessageStreamTokenizer *stdin_mst;
1626 int crt_rfds = 0, rfds_list[MAX_PORTS];
1627 int broadcast, sendsocket;
1628 /* Assert privs so we can modify the firewall rules! */
1630 #ifdef HAVE_SETRESUID
1631 if (0 != setresuid (uid, 0, 0))
1633 fprintf (stderr, "Failed to setresuid to root: %s\n", strerror (errno));
1637 if (0 != seteuid (0))
1639 fprintf (stderr, "Failed to seteuid back to root: %s\n", strerror (errno));
1644 /* Make use of SGID capabilities on POSIX */
1645 memset (&dev, 0, sizeof (dev));
1646 dev.fd_rfcomm = socket (AF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM);
1647 raw_eno = errno; /* remember for later */
1649 /* Now that we've dropped root rights, we can do error checking */
1652 fprintf (stderr, "You must specify the name of the interface as the first \
1653 and only argument to this program.\n");
1654 if (-1 != dev.fd_rfcomm)
1655 (void) close (dev.fd_rfcomm);
1659 if (-1 == dev.fd_rfcomm)
1661 fprintf (stderr, "Failed to create a RFCOMM socket: %s\n", strerror (raw_eno));
1664 if (dev.fd_rfcomm >= FD_SETSIZE)
1666 fprintf (stderr, "File descriptor too large for select (%d > %d)\n",
1667 dev.fd_rfcomm, FD_SETSIZE);
1668 (void) close (dev.fd_rfcomm);
1671 if (0 != test_bluetooth_interface (argv[1]))
1673 (void) close (dev.fd_rfcomm);
1676 strncpy (dev.iface, argv[1], IFNAMSIZ);
1677 if (0 != open_device (&dev))
1679 (void) close (dev.fd_rfcomm);
1685 uid_t uid = getuid ();
1686 #ifdef HAVE_SETRESUID
1687 if (0 != setresuid (uid, uid, uid))
1689 fprintf (stderr, "Failed to setresuid: %s\n", strerror (errno));
1690 if (-1 != dev.fd_rfcomm)
1691 (void) close (dev.fd_rfcomm);
1695 if (0 != (setuid (uid) | seteuid (uid)))
1697 fprintf (stderr, "Failed to setuid: %s\n", strerror (errno));
1698 if (-1 != dev.fd_rfcomm)
1699 (void) close (dev.fd_rfcomm);
1705 /* Send MAC address of the bluetooth interface to STDOUT first */
1707 struct GNUNET_TRANSPORT_WLAN_HelperControlMessage macmsg;
1709 macmsg.hdr.size = htons (sizeof (macmsg));
1710 macmsg.hdr.type = htons (GNUNET_MESSAGE_TYPE_WLAN_HELPER_CONTROL);
1711 memcpy (&macmsg.mac, &dev.pl_mac, sizeof (struct GNUNET_TRANSPORT_WLAN_MacAddress));
1712 memcpy (write_std.buf, &macmsg, sizeof (macmsg));
1713 write_std.size = sizeof (macmsg);
1717 stdin_mst = mst_create (&stdin_send_hw, &dev);
1721 * TODO : I should make the time out of a mac endpoint smaller and check if the rate
1722 * from get_wlan_header (plugin_transport_bluetooth.c) is correct.
1731 if ((0 == write_pout.size) && (1 == stdin_open))
1733 FD_SET (STDIN_FILENO, &rfds);
1734 maxfd = MAX (maxfd, STDIN_FILENO);
1736 if (0 == write_std.size)
1738 FD_SET (dev.fd_rfcomm, &rfds);
1739 maxfd = MAX (maxfd, dev.fd_rfcomm);
1742 for (i = 0; i < crt_rfds; i++) // it can receive messages from multiple devices
1744 FD_SET (rfds_list[i], &rfds);
1745 maxfd = MAX (maxfd, rfds_list[i]);
1748 if (0 < write_std.size)
1750 FD_SET (STDOUT_FILENO, &wfds);
1751 maxfd = MAX (maxfd, STDOUT_FILENO);
1753 if (0 < write_pout.size) //it can send messages only to one device per loop
1755 struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame *frame;
1756 /* Get the destination address */
1757 frame = (struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame *) write_pout.buf;
1759 if (memcmp (&frame->addr1, &dev.pl_mac,
1760 sizeof (struct GNUNET_TRANSPORT_WLAN_MacAddress)) == 0)
1763 memset (&write_pout, 0, sizeof (write_pout)); //clear the buffer
1765 else if (memcmp (&frame->addr1, &broadcast_address,
1766 sizeof (struct GNUNET_TRANSPORT_WLAN_MacAddress)) == 0)
1768 fprintf (stderr, "LOG : %s has a broadcast message (pos %d, size %d)\n", dev.iface, neighbours.pos, neighbours.size); //FIXME: debugging message
1770 if (send_broadcast(&dev, &sendsocket) != 0) //if the searching wasn't successful don't get stuck on the select stage
1773 memset (&write_pout, 0, sizeof (write_pout)); //remove the message
1774 fprintf (stderr, "LOG : Skipping the broadcast message (pos %d, size %d)\n", neighbours.pos, neighbours.size);
1778 FD_SET (sendsocket, &wfds);
1779 maxfd = MAX (maxfd, sendsocket);
1786 /* Search if the address already exists on the list */
1787 for (i = 0; i < neighbours.size; i++)
1789 if (memcmp (&frame->addr1, &(neighbours.devices[i]), sizeof (bdaddr_t)) == 0)
1792 if (neighbours.fds[i] != -1)
1794 found = 1; //save the position where it was found
1795 FD_SET (neighbours.fds[i], &wfds);
1796 maxfd = MAX (maxfd, neighbours.fds[i]);
1797 sendsocket = neighbours.fds[i];
1798 fprintf (stderr, "LOG: the address was found in the list\n");
1806 struct sockaddr_rc addr = { 0 };
1808 fprintf (stderr, "LOG : %s has a new message for %.2X:%.2X:%.2X:%.2X:%.2X:%.2X which isn't on the broadcast list\n", dev.iface,
1809 frame->addr1.mac[5], frame->addr1.mac[4], frame->addr1.mac[3],
1810 frame->addr1.mac[2], frame->addr1.mac[1], frame->addr1.mac[0]); //FIXME: debugging message
1812 sendsocket = socket (AF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM);
1816 fprintf (stderr, "Failed to create a RFCOMM socket (sending stage): %s\n",
1821 memcpy (&addr.rc_bdaddr, &frame->addr1, sizeof (bdaddr_t));
1822 addr.rc_family = AF_BLUETOOTH;
1823 addr.rc_channel = get_channel (&dev, addr.rc_bdaddr);
1827 status = connect (sendsocket, (struct sockaddr *) &addr, sizeof (addr));
1828 if (0 != status && errno != EAGAIN)
1830 if (errno == ECONNREFUSED && tries < 2)
1832 fprintf (stderr, "LOG : %.*s failed to connect. Trying again!\n", IFNAMSIZ, dev.iface);
1836 else if (errno == EBADF)
1838 fprintf (stderr, "LOG : %s failed to connect : %s. Skip it!\n", dev.iface, strerror (errno));
1839 memset (&write_pout, 0, sizeof (write_pout));
1844 fprintf (stderr, "LOG : %s failed to connect : %s. Try again later!\n", dev.iface, strerror (errno));
1845 memset (&write_pout, 0, sizeof (write_pout));
1852 FD_SET (sendsocket, &wfds);
1853 maxfd = MAX (maxfd, sendsocket);
1854 fprintf (stderr, "LOG : Connection successful\n");
1855 if (pos != 0) // save the socket
1857 neighbours.fds[pos] = sendsocket;
1861 /* Add the new device to the discovered devices list */
1862 if (neighbours.size < MAX_PORTS)
1864 neighbours.fds[neighbours.size] = sendsocket;
1865 memcpy (&(neighbours.devices[neighbours.size++]), &addr.rc_bdaddr, sizeof (bdaddr_t));
1869 fprintf (stderr, "The top limit for the discovarable devices' list was reached\n");
1879 /* Select a fd which is ready for action :) */
1881 int retval = select (maxfd + 1, &rfds, &wfds, NULL, NULL);
1882 if ((-1 == retval) && (EINTR == errno))
1884 if (0 > retval && errno != EBADF) // we handle BADF errors later
1886 fprintf (stderr, "select failed: %s\n", strerror (errno));
1890 if (FD_ISSET (STDOUT_FILENO , &wfds))
1893 write (STDOUT_FILENO, write_std.buf + write_std.pos,
1894 write_std.size - write_std.pos);
1897 fprintf (stderr, "Failed to write to STDOUT: %s\n", strerror (errno));
1900 write_std.pos += ret;
1901 if (write_std.pos == write_std.size)
1906 fprintf (stderr, "LOG : %s sends a message to STDOUT\n", dev.iface); //FIXME: debugging message
1909 if (sendsocket != -1)
1911 if (FD_ISSET (sendsocket , &wfds))
1914 write (sendsocket, write_pout.buf + write_std.pos,
1915 write_pout.size - write_pout.pos);
1916 if (0 > ret) //FIXME should I first check the error type?
1918 fprintf (stderr, "Failed to write to bluetooth device: %s. Closing the socket!\n",
1920 for (i = 0; i < neighbours.size; i++)
1922 if (neighbours.fds[i] == sendsocket)
1924 (void) close(sendsocket);
1925 neighbours.fds[i] = -1;
1929 /* Remove the message */
1930 memset (&write_pout.buf + write_std.pos, 0, (write_pout.size - write_pout.pos));
1931 write_pout.pos = 0 ;
1932 write_pout.size = 0;
1936 write_pout.pos += ret;
1937 if ((write_pout.pos != write_pout.size) && (0 != ret))
1939 /* We should not get partial sends with packet-oriented devices... */
1940 fprintf (stderr, "Write error, partial send: %u/%u\n",
1941 (unsigned int) write_pout.pos,
1942 (unsigned int) write_pout.size);
1946 if (write_pout.pos == write_pout.size)
1949 write_pout.size = 0;
1951 fprintf (stderr, "LOG : %s sends a message to a DEVICE\n", dev.iface); //FIXME: debugging message
1955 for (i = 0; i <= maxfd; i++)
1957 if (FD_ISSET (i, &rfds))
1959 if (i == STDIN_FILENO)
1962 read (i, readbuf, sizeof (readbuf));
1966 "Read error from STDIN: %s\n",
1972 /* stop reading... */
1977 mst_receive (stdin_mst, readbuf, ret);
1978 fprintf (stderr, "LOG : %s receives a message from STDIN\n", dev.iface); //FIXME: debugging message
1981 else if (i == dev.fd_rfcomm)
1984 struct sockaddr_rc addr = { 0 };
1985 unsigned int opt = sizeof (addr);
1987 readsocket = accept (dev.fd_rfcomm, (struct sockaddr *) &addr, &opt);
1988 fprintf(stderr, "LOG : %s accepts a message\n", dev.iface); //FIXME: debugging message
1989 if (readsocket == -1)
1991 fprintf (stderr, "Failed to accept a connection on interface: %.*s\n", IFNAMSIZ,
1997 FD_SET (readsocket, &rfds);
1998 maxfd = MAX (maxfd, readsocket);
2000 if (crt_rfds < MAX_PORTS)
2001 rfds_list[crt_rfds++] = readsocket;
2004 fprintf (stderr, "The limit for the read file descriptors list was \
2013 struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage *rrm;
2015 fprintf (stderr, "LOG : %s reads something from the socket\n", dev.iface);//FIXME : debugging message
2016 rrm = (struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage *) write_std.buf;
2018 read_from_the_socket ((void *)&i, (unsigned char *) &rrm->frame,
2019 sizeof (write_std.buf)
2020 - sizeof (struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage)
2021 + sizeof (struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame),
2028 /* Remove the socket from the list */
2029 for (j = 0; j < crt_rfds; j++)
2031 if (rfds_list[j] == i)
2033 rfds_list[j] ^= rfds_list[crt_rfds - 1];
2034 rfds_list[crt_rfds - 1] ^= rfds_list[j];
2035 rfds_list[j] ^= rfds_list[crt_rfds - 1];
2041 fprintf (stderr, "Read error from raw socket: %s\n", strerror (errno));
2044 if ((0 < ret) && (0 == mac_test (&rrm->frame, &dev)))
2046 write_std.size = ret
2047 + sizeof (struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage)
2048 - sizeof (struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame);
2049 rrm->header.size = htons (write_std.size);
2050 rrm->header.type = htons (GNUNET_MESSAGE_TYPE_WLAN_DATA_FROM_HELPER);
2057 /* Error handling, try to clean up a bit at least */
2058 mst_destroy (stdin_mst);
2060 sdp_close (dev.session);
2061 (void) close (dev.fd_rfcomm);
2062 (void) close (sendsocket);
2064 for (i = 0; i < crt_rfds; i++)
2065 (void) close (rfds_list[i]);
2067 for (i = 0; i < neighbours.size; i++)
2068 (void) close (neighbours.fds[i]);
2070 struct HardwareInfos dev;
2071 struct GNUNET_NETWORK_Handle *sendsocket;
2072 struct GNUNET_NETWORK_FDSet *rfds;
2073 struct GNUNET_NETWORK_FDSet *wfds;
2074 struct GNUNET_NETWORK_Handle *rfds_list[MAX_PORTS];
2075 char readbuf[MAXLINE] = { 0 };
2076 SOCKADDR_BTH acc_addr = { 0 };
2077 int addr_len = sizeof (SOCKADDR_BTH);
2078 int broadcast, i, stdin_open, crt_rfds = 0;
2079 HANDLE stdin_handle = GetStdHandle (STD_INPUT_HANDLE);
2080 HANDLE stdout_handle = GetStdHandle (STD_OUTPUT_HANDLE);
2081 struct MessageStreamTokenizer *stdin_mst;
2083 /* check the handles */
2084 if (stdin_handle == INVALID_HANDLE_VALUE)
2086 fprintf (stderr, "Failed to get the stdin handle\n");
2090 if (stdout_handle == INVALID_HANDLE_VALUE)
2092 fprintf (stderr, "Failed to get the stdout handle\n");
2096 /* initialize windows sockets */
2097 initialize_windows_sockets();
2099 // /* test bluetooth socket family support */ --> it return false because the GNUNET_NETWORK_test_pf should also receive the type of socket (BTHPROTO_RFCOMM)
2100 // if (GNUNET_NETWORK_test_pf (AF_BTH) != GNUNET_OK)
2102 // fprintf (stderr, "AF_BTH family is not supported\n");
2106 /* create the socket */
2107 dev.handle = GNUNET_NETWORK_socket_create (AF_BTH, SOCK_STREAM, BTHPROTO_RFCOMM);
2108 if (dev.handle == NULL)
2110 fprintf (stderr, "Failed to create RFCOMM socket: ");
2116 if (open_device (&dev) == -1)
2118 fprintf (stderr, "Failed to open the device\n");
2120 if (GNUNET_NETWORK_socket_close (dev.handle) != GNUNET_OK)
2122 fprintf (stderr, "Failed to close the socket!\n");
2128 if (GNUNET_OK != GNUNET_NETWORK_socket_set_blocking (dev.handle, 1) )
2130 fprintf (stderr, "Failed to change the socket mode\n");
2134 memset (&write_std, 0, sizeof (write_std));
2135 memset (&write_pout, 0, sizeof (write_pout));
2138 rfds = GNUNET_NETWORK_fdset_create ();
2139 wfds = GNUNET_NETWORK_fdset_create ();
2141 /* Send MAC address of the bluetooth interface to STDOUT first */
2143 struct GNUNET_TRANSPORT_WLAN_HelperControlMessage macmsg;
2145 macmsg.hdr.size = htons (sizeof (macmsg));
2146 macmsg.hdr.type = htons (GNUNET_MESSAGE_TYPE_WLAN_HELPER_CONTROL);
2147 memcpy (&macmsg.mac, &dev.pl_mac, sizeof (struct GNUNET_TRANSPORT_WLAN_MacAddress_Copy));
2148 memcpy (write_std.buf, &macmsg, sizeof (macmsg));
2149 write_std.size = sizeof (macmsg);
2153 stdin_mst = mst_create (&stdin_send_hw, &dev);
2158 int stdout_pos = -1;
2165 sendsocket = NULL; //FIXME ???memleaks
2167 GNUNET_NETWORK_fdset_zero (rfds);
2168 if ((0 == write_pout.size) && (1 == stdin_open))
2172 GNUNET_NETWORK_fdset_handle_set (rfds, (struct GNUNET_DISK_FileHandle*) &stdin_handle);
2175 if (0 == write_std.size)
2178 GNUNET_NETWORK_fdset_set (rfds, dev.handle);
2181 for (i = 0; i < crt_rfds; i++)
2184 GNUNET_NETWORK_fdset_set (rfds, rfds_list[i]);
2187 GNUNET_NETWORK_fdset_zero (wfds);
2188 if (0 < write_std.size)
2191 GNUNET_NETWORK_fdset_handle_set (wfds, (struct GNUNET_DISK_FileHandle*) &stdout_handle);
2192 // printf ("%s\n", write_std.buf);
2193 // memset (write_std.buf, 0, write_std.size);
2194 // write_std.size = 0;
2197 if (0 < write_pout.size)
2199 if (strcmp (argv[1], "ff:ff:ff:ff:ff:ff") == 0) {
2200 fprintf(stderr, "LOG: BROADCAST! Skipping the message\n");
2203 memset (write_pout.buf, 0, write_pout.size);
2204 write_pout.size = 0;
2209 fprintf (stderr, "LOG : has a new message for %s\n", argv[1]);
2210 sendsocket = GNUNET_NETWORK_socket_create (AF_BTH, SOCK_STREAM, BTHPROTO_RFCOMM);
2212 if (sendsocket == NULL)
2214 fprintf (stderr, "Failed to create RFCOMM socket: \n");
2219 memset (&addr, 0, sizeof (addr));
2220 //addr.addressFamily = AF_BTH;
2222 WSAStringToAddress (argv[1], AF_BTH, NULL, (LPSOCKADDR) &addr, &addr_len))
2224 fprintf (stderr, "Failed to translate the address: ");
2228 addr.port = get_channel (argv[1]);
2229 if (addr.port == -1)
2231 fprintf (stderr, "Couldn't find the sdp service for the address: %s\n", argv[1]);
2232 memset (write_pout.buf, 0, write_pout.size);
2233 write_pout.size = 0;
2234 broadcast = 1; //skipping the select part
2238 if (GNUNET_OK != GNUNET_NETWORK_socket_connect (sendsocket, (LPSOCKADDR)&addr, addr_len))
2240 fprintf (stderr, "Failed to connect: ");
2245 if (GNUNET_OK != GNUNET_NETWORK_socket_set_blocking (sendsocket, 1) )
2247 fprintf (stderr, "Failed to change the socket mode\n");
2251 GNUNET_NETWORK_fdset_set (wfds, sendsocket);
2258 int retval = GNUNET_NETWORK_socket_select (rfds, wfds, NULL, GNUNET_TIME_relative_get_forever_());
2261 fprintf (stderr, "Select error\n");
2264 //if (GNUNET_NETWORK_fdset_isset (wfds, (struct GNUNET_NETWORK_Handle*)&stdout_handle))
2265 if (retval == stdout_pos)
2267 fprintf(stderr, "LOG : sends a message to STDOUT\n"); //FIXME: debugging message
2269 //ret = GNUNET_NETWORK_socket_send ((struct GNUNET_NETWORK_Handle *)&stdout_handle, write_std.buf + write_std.pos, write_std.size - write_std.pos);
2270 //ret = write (STDOUT_FILENO, write_std.buf + write_std.pos, write_std.size - write_std.pos);
2272 if (FALSE == WriteFile (stdout_handle, write_std.buf + write_std.pos, write_std.size - write_std.pos, &ret, NULL))
2274 fprintf (stderr, "Failed to write to STDOUT: ");
2281 fprintf (stderr, "Failed to write to STDOUT\n");
2285 write_std.pos += ret;
2286 if (write_std.pos == write_std.size)
2292 if (sendsocket != NULL)
2294 if (GNUNET_NETWORK_fdset_isset (wfds, sendsocket))
2297 ret = GNUNET_NETWORK_socket_send (sendsocket, write_pout.buf + write_pout.pos,
2298 write_pout.size - write_pout.pos);
2300 if (GNUNET_SYSERR == ret)
2302 fprintf (stderr, "Failed to send to the socket. Closing the socket. Error: \n");
2304 if (GNUNET_NETWORK_socket_close (sendsocket) != GNUNET_OK)
2306 fprintf (stderr, "Failed to close the sendsocket!\n");
2313 write_pout.pos += ret;
2314 if ((write_pout.pos != write_pout.size) && (0 != ret))
2316 /* we should not get partial sends with packet-oriented devices... */
2317 fprintf (stderr, "Write error, partial send: %u/%u\n",
2318 (unsigned int) write_pout.pos,
2319 (unsigned int) write_pout.size);
2323 if (write_pout.pos == write_pout.size)
2326 write_pout.size = 0;
2329 fprintf(stderr, "LOG : sends a message to a DEVICE\n"); //FIXME: debugging message
2334 //if (GNUNET_NETWORK_fdset_isset (rfds, (struct GNUNET_NETWORK_Handle*)&stdin_handle))
2335 if (retval == stdin_pos)
2338 //ret = GNUNET_NETWORK_socket_recv ((struct GNUNET_NETWORK_Handle *)&stdin_handle, readbuf, sizeof (write_pout.buf));
2339 //ret = read (STDIN_FILENO, readbuf, sizeof (readbuf));
2341 if (FALSE == ReadFile (stdin_handle, readbuf, sizeof (readbuf), &ret, NULL)) /* do nothing asynchronous */
2343 fprintf (stderr, "Read error from STDIN: ");
2349 /* stop reading... */
2352 mst_receive (stdin_mst, readbuf, ret);
2353 fprintf (stderr, "LOG : receives a message from STDIN\n"); //FIXME: debugging message
2357 if (GNUNET_NETWORK_fdset_isset (rfds, dev.handle))
2359 fprintf (stderr, "LOG: accepting connection\n");
2360 struct GNUNET_NETWORK_Handle *readsocket;
2361 readsocket = GNUNET_NETWORK_socket_accept (dev.handle, (LPSOCKADDR)&acc_addr, &addr_len);
2362 if (readsocket == NULL)
2364 fprintf (stderr, "Accept error %d: ", GetLastError());
2370 if (GNUNET_OK != GNUNET_NETWORK_socket_set_blocking (readsocket, 1) )
2372 fprintf (stderr, "Failed to change the socket mode\n");
2375 GNUNET_NETWORK_fdset_set (rfds, readsocket);
2377 if (crt_rfds < MAX_PORTS)
2378 rfds_list[crt_rfds++] = readsocket;
2381 fprintf (stderr, "The limit for the read file descriptors list was reached\n");
2387 for (i = 0; i < crt_rfds; i++)
2389 if (GNUNET_NETWORK_fdset_isset (rfds, rfds_list[i]))
2391 struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage *rrm;
2393 fprintf (stderr, "LOG: reading something from the socket\n");//FIXME : debugging message
2394 rrm = (struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage *) write_std.buf;
2395 ret = read_from_the_socket (rfds_list[i], (unsigned char *) &rrm->frame,
2396 sizeof (write_std.buf)
2397 - sizeof (struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage)
2398 + sizeof (struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame),
2403 //TODO remove the socket from the list
2404 if (GNUNET_NETWORK_socket_close (rfds_list[i]) != GNUNET_OK)
2406 fprintf (stderr, "Failed to close the sendsocket!\n");
2410 fprintf (stderr, "Read error from raw socket: ");
2415 if ((0 < ret) && (0 == mac_test (&rrm->frame, &dev)))
2417 write_std.size = ret
2418 + sizeof (struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage)
2419 - sizeof (struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame);
2420 rrm->header.size = htons (write_std.size);
2421 rrm->header.type = htons (GNUNET_MESSAGE_TYPE_WLAN_DATA_FROM_HELPER);
2429 mst_destroy (stdin_mst);
2432 if (GNUNET_NETWORK_socket_close (dev.handle) != GNUNET_OK)
2434 fprintf (stderr, "Failed to close the socket!\n");
2438 for (i = 0; i < crt_rfds; i++)
2440 if (GNUNET_NETWORK_socket_close (rfds_list[i]) != GNUNET_OK)
2442 fprintf (stderr, "Failed to close the socket!\n");
2449 return 1; /* we never exit 'normally' */