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 * In bluez library, the maximum name length of a device is 8
102 #define BLUEZ_DEVNAME_SIZE 8
105 * struct for storing the information of the hardware. There is only
111 * Name of the interface, not necessarily 0-terminated (!).
113 char iface[IFNAMSIZ];
119 struct GNUNET_NETWORK_Handle *handle;
122 * MAC address of our own bluetooth interface.
124 struct GNUNET_TRANSPORT_WLAN_MacAddress_Copy pl_mac;
127 * file descriptor for the rfcomm socket
132 * MAC address of our own bluetooth interface.
134 struct GNUNET_TRANSPORT_WLAN_MacAddress pl_mac;
139 sdp_session_t *session ;
144 * IO buffer used for buffering data in transit (to wireless or to stdout).
149 * How many bytes of data are stored in 'buf' for transmission right now?
150 * Data always starts at offset 0 and extends to 'size'.
155 * How many bytes that were stored in 'buf' did we already write to the
156 * destination? Always smaller than 'size'.
161 * Buffered data; twice the maximum allowed message size as we add some
164 char buf[MAXLINE * 2];
169 * Devices buffer used to keep a list with all the discoverable devices in
170 * order to send them HELLO messages one by one when it receive a broadcast message.
172 struct BroadcastMessages
174 /* List with the discoverable devices' addresses */
175 bdaddr_t devices[MAX_PORTS];
177 /* List with the open sockets */
181 /* The number of the devices */
184 /* The current position */
192 * Address used to identify the broadcast messages.
194 static struct GNUNET_TRANSPORT_WLAN_MacAddress broadcast_address = {{255, 255, 255, 255, 255, 255}};
197 * Buffer with the discoverable devices.
199 static struct BroadcastMessages neighbours;
201 static int searching_devices_count = 0;
205 * Buffer for data read from stdin to be transmitted to the bluetooth device
207 static struct SendBuffer write_pout;
210 * Buffer for data read from the bluetooth device to be transmitted to stdout.
212 static struct SendBuffer write_std;
215 /* ****** this are the same functions as the ones used in gnunet-helper-transport-wlan.c ****** */
218 * To what multiple do we align messages? 8 byte should suffice for everyone
221 #define ALIGN_FACTOR 8
224 * Smallest supported message.
226 #define MIN_BUFFER_SIZE sizeof (struct GNUNET_MessageHeader)
230 * Functions with this signature are called whenever a
231 * complete message is received by the tokenizer.
234 * @param message the actual message
236 typedef void (*MessageTokenizerCallback) (void *cls,
238 GNUNET_MessageHeader *
242 * Handle to a message stream tokenizer.
244 struct MessageStreamTokenizer
248 * Function to call on completed messages.
250 MessageTokenizerCallback cb;
258 * Size of the buffer (starting at 'hdr').
263 * How many bytes in buffer have we already processed?
268 * How many bytes in buffer are valid right now?
273 * Beginning of the buffer. Typed like this to force alignment.
275 struct GNUNET_MessageHeader *hdr;
281 * Create a message stream tokenizer.
283 * @param cb function to call on completed messages
284 * @param cb_cls closure for cb
285 * @return handle to tokenizer
287 static struct MessageStreamTokenizer *
288 mst_create (MessageTokenizerCallback cb,
291 struct MessageStreamTokenizer *ret;
293 ret = malloc (sizeof (struct MessageStreamTokenizer));
296 fprintf (stderr, "Failed to allocate buffer for tokenizer\n");
299 ret->hdr = malloc (MIN_BUFFER_SIZE);
300 if (NULL == ret->hdr)
302 fprintf (stderr, "Failed to allocate buffer for alignment\n");
305 ret->curr_buf = MIN_BUFFER_SIZE;
307 ret->cb_cls = cb_cls;
315 * Add incoming data to the receive buffer and call the
316 * callback for all complete messages.
318 * @param mst tokenizer to use
319 * @param buf input data to add
320 * @param size number of bytes in buf
321 * @return GNUNET_OK if we are done processing (need more data)
322 * GNUNET_SYSERR if the data stream is corrupt
325 mst_receive (struct MessageStreamTokenizer *mst,
326 const char *buf, size_t size)
328 const struct GNUNET_MessageHeader *hdr;
333 unsigned long offset;
337 ibuf = (char *) mst->hdr;
341 if (mst->pos < mst->off)
343 //fprintf (stderr, "We processed too many bytes!\n");
344 return GNUNET_SYSERR;
346 if ((mst->curr_buf - mst->off < sizeof (struct GNUNET_MessageHeader)) ||
347 (0 != (mst->off % ALIGN_FACTOR)))
349 /* need to align or need more space */
350 mst->pos -= mst->off;
351 memmove (ibuf, &ibuf[mst->off], mst->pos);
354 if (mst->pos - mst->off < sizeof (struct GNUNET_MessageHeader))
357 GNUNET_MIN (sizeof (struct GNUNET_MessageHeader) -
358 (mst->pos - mst->off), size);
359 memcpy (&ibuf[mst->pos], buf, delta);
364 if (mst->pos - mst->off < sizeof (struct GNUNET_MessageHeader))
366 //FIXME should I reset ??
371 hdr = (const struct GNUNET_MessageHeader *) &ibuf[mst->off];
372 want = ntohs (hdr->size);
373 if (want < sizeof (struct GNUNET_MessageHeader))
376 "Received invalid message from stdin\n");
377 return GNUNET_SYSERR;
379 if ((mst->curr_buf - mst->off < want) &&
382 /* need more space */
383 mst->pos -= mst->off;
384 memmove (ibuf, &ibuf[mst->off], mst->pos);
387 if (want > mst->curr_buf)
391 fprintf (stderr, "Error! We should proceeded 0 bytes\n");
392 return GNUNET_SYSERR;
394 mst->hdr = realloc (mst->hdr, want);
395 if (NULL == mst->hdr)
397 fprintf (stderr, "Failed to allocate buffer for alignment\n");
400 ibuf = (char *) mst->hdr;
401 mst->curr_buf = want;
403 hdr = (const struct GNUNET_MessageHeader *) &ibuf[mst->off];
404 if (mst->pos - mst->off < want)
406 delta = GNUNET_MIN (want - (mst->pos - mst->off), size);
407 if (mst->pos + delta > mst->curr_buf)
409 fprintf (stderr, "The size of the buffer will be exceeded!\n");
410 return GNUNET_SYSERR;
412 memcpy (&ibuf[mst->pos], buf, delta);
417 if (mst->pos - mst->off < want)
419 //FIXME should I use this?
424 mst->cb (mst->cb_cls, hdr);
426 if (mst->off == mst->pos)
428 /* reset to beginning of buffer, it's free right now! */
435 fprintf (stderr, "There should some valid bytes in the buffer on this stage\n");
436 return GNUNET_SYSERR;
440 if (size < sizeof (struct GNUNET_MessageHeader))
442 offset = (unsigned long) buf;
443 need_align = (0 != offset % ALIGN_FACTOR) ? GNUNET_YES : GNUNET_NO;
444 if (GNUNET_NO == need_align)
446 /* can try to do zero-copy and process directly from original buffer */
447 hdr = (const struct GNUNET_MessageHeader *) buf;
448 want = ntohs (hdr->size);
449 if (want < sizeof (struct GNUNET_MessageHeader))
452 "Received invalid message from stdin\n");
455 return GNUNET_SYSERR;
458 break; /* or not, buffer incomplete, so copy to private buffer... */
459 mst->cb (mst->cb_cls, hdr);
465 /* need to copy to private buffer to align;
466 * yes, we go a bit more spagetti than usual here */
472 if (size + mst->pos > mst->curr_buf)
474 mst->hdr = realloc (mst->hdr, size + mst->pos);
475 if (NULL == mst->hdr)
477 fprintf (stderr, "Failed to allocate buffer for alignment\n");
480 ibuf = (char *) mst->hdr;
481 mst->curr_buf = size + mst->pos;
483 if (mst->pos + size > mst->curr_buf)
486 "Assertion failed\n");
489 memcpy (&ibuf[mst->pos], buf, size);
496 * Destroys a tokenizer.
498 * @param mst tokenizer to destroy
501 mst_destroy (struct MessageStreamTokenizer *mst)
508 * Calculate crc32, the start of the calculation
510 * @param buf buffer to calc the crc
511 * @param len len of the buffer
515 calc_crc_osdep (const unsigned char *buf, size_t len)
517 static const unsigned long int crc_tbl_osdep[256] = {
518 0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, 0x076DC419, 0x706AF48F,
519 0xE963A535, 0x9E6495A3,
520 0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988, 0x09B64C2B, 0x7EB17CBD,
521 0xE7B82D07, 0x90BF1D91,
522 0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE, 0x1ADAD47D, 0x6DDDE4EB,
523 0xF4D4B551, 0x83D385C7,
524 0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC, 0x14015C4F, 0x63066CD9,
525 0xFA0F3D63, 0x8D080DF5,
526 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172, 0x3C03E4D1, 0x4B04D447,
527 0xD20D85FD, 0xA50AB56B,
528 0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940, 0x32D86CE3, 0x45DF5C75,
529 0xDCD60DCF, 0xABD13D59,
530 0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116, 0x21B4F4B5, 0x56B3C423,
531 0xCFBA9599, 0xB8BDA50F,
532 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924, 0x2F6F7C87, 0x58684C11,
533 0xC1611DAB, 0xB6662D3D,
534 0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A, 0x71B18589, 0x06B6B51F,
535 0x9FBFE4A5, 0xE8B8D433,
536 0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818, 0x7F6A0DBB, 0x086D3D2D,
537 0x91646C97, 0xE6635C01,
538 0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E, 0x6C0695ED, 0x1B01A57B,
539 0x8208F4C1, 0xF50FC457,
540 0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA, 0xFCB9887C, 0x62DD1DDF, 0x15DA2D49,
541 0x8CD37CF3, 0xFBD44C65,
542 0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2, 0x4ADFA541, 0x3DD895D7,
543 0xA4D1C46D, 0xD3D6F4FB,
544 0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0, 0x44042D73, 0x33031DE5,
545 0xAA0A4C5F, 0xDD0D7CC9,
546 0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086, 0x5768B525, 0x206F85B3,
547 0xB966D409, 0xCE61E49F,
548 0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4, 0x59B33D17, 0x2EB40D81,
549 0xB7BD5C3B, 0xC0BA6CAD,
550 0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A, 0xEAD54739, 0x9DD277AF,
551 0x04DB2615, 0x73DC1683,
552 0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8, 0xE40ECF0B, 0x9309FF9D,
553 0x0A00AE27, 0x7D079EB1,
554 0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE, 0xF762575D, 0x806567CB,
555 0x196C3671, 0x6E6B06E7,
556 0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC, 0xF9B9DF6F, 0x8EBEEFF9,
557 0x17B7BE43, 0x60B08ED5,
558 0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252, 0xD1BB67F1, 0xA6BC5767,
559 0x3FB506DD, 0x48B2364B,
560 0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60, 0xDF60EFC3, 0xA867DF55,
561 0x316E8EEF, 0x4669BE79,
562 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236, 0xCC0C7795, 0xBB0B4703,
563 0x220216B9, 0x5505262F,
564 0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04, 0xC2D7FFA7, 0xB5D0CF31,
565 0x2CD99E8B, 0x5BDEAE1D,
566 0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A, 0x9C0906A9, 0xEB0E363F,
567 0x72076785, 0x05005713,
568 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38, 0x92D28E9B, 0xE5D5BE0D,
569 0x7CDCEFB7, 0x0BDBDF21,
570 0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E, 0x81BE16CD, 0xF6B9265B,
571 0x6FB077E1, 0x18B74777,
572 0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C, 0x8F659EFF, 0xF862AE69,
573 0x616BFFD3, 0x166CCF45,
574 0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2, 0xA7672661, 0xD06016F7,
575 0x4969474D, 0x3E6E77DB,
576 0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0, 0xA9BCAE53, 0xDEBB9EC5,
577 0x47B2CF7F, 0x30B5FFE9,
578 0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6, 0xBAD03605, 0xCDD70693,
579 0x54DE5729, 0x23D967BF,
580 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94, 0xB40BBE37, 0xC30C8EA1,
581 0x5A05DF1B, 0x2D02EF8D
584 unsigned long crc = 0xFFFFFFFF;
586 for (; len > 0; len--, buf++)
587 crc = crc_tbl_osdep[(crc ^ *buf) & 0xFF] ^ (crc >> 8);
593 * Calculate and check crc of the bluetooth packet
595 * @param buf buffer of the packet, with len + 4 bytes of data,
596 * the last 4 bytes being the checksum
597 * @param len length of the payload in data
598 * @return 0 on success (checksum matches), 1 on error
601 check_crc_buf_osdep (const unsigned char *buf, size_t len)
605 crc = calc_crc_osdep (buf, len);
607 if (((crc) & 0xFF) == buf[0] && ((crc >> 8) & 0xFF) == buf[1] &&
608 ((crc >> 16) & 0xFF) == buf[2] && ((crc >> 24) & 0xFF) == buf[3])
615 /* ************** end of clone ***************** */
619 * Function used to get the code of last error and to print the type of error.
624 LPVOID lpMsgBuf = NULL;
626 if (FormatMessage (FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
627 NULL, GetLastError(), 0, (LPTSTR) &lpMsgBuf, 0, NULL))
628 fprintf (stderr, "%s\n", (char *)lpMsgBuf);
630 fprintf (stderr, "Failed to format the message for the last error! Error number : %d\n", GetLastError());
634 * Function used to initialize the Windows Sockets
637 initialize_windows_sockets()
640 WORD wVersionRequested = MAKEWORD (2, 0);
641 if (WSAStartup (wVersionRequested, &wsaData) != NO_ERROR)
643 fprintf (stderr , "Error initializing window sockets!\n");
650 * Function used to convert the GUID.
651 * @param bytes the GUID represented as a char array
652 * @param uuid pointer to the GUID
655 convert_guid(char *bytes, GUID * uuid)
658 uuid->Data1 = ((bytes[0] << 24) & 0xff000000) | ((bytes[1] << 16) & 0x00ff0000) | ((bytes[2] << 8) & 0x0000ff00) | (bytes[3] & 0x000000ff);
659 uuid->Data2 = ((bytes[4] << 8) & 0xff00) | (bytes[5] & 0x00ff);
660 uuid->Data3 = ((bytes[6] << 8) & 0xff00) | (bytes[7] & 0x00ff);
662 for (i = 0; i < 8; i++)
664 uuid->Data4[i] = bytes[i + 8];
671 * Function for assigning a port number
673 * @param socket the socket used to bind
674 * @param addr pointer to the rfcomm address
675 * @return 0 on success
678 bind_socket (int socket, struct sockaddr_rc *addr)
682 /* Bind every possible port (from 0 to 30) and stop when binding doesn't fail */
683 //FIXME : it should start from port 1, but on my computer it doesn't work :)
684 for (port = 3; port <= 30; port++)
686 addr->rc_channel = port;
687 status = bind (socket, (struct sockaddr *) addr, sizeof (struct sockaddr_rc));
698 * Function used for creating the service record and registering it.
700 * @param dev pointer to the device struct
701 * @return 0 on success
704 register_service (struct HardwareInfos *dev)
706 /* advertise the service */
707 CSADDR_INFO addr_info;
710 unsigned char uuid[] = GNUNET_BLUETOOTH_SDP_UUID;
712 int addr_len = sizeof (SOCKADDR_BTH);
714 /* get the port on which we are listening on */
715 memset (& addr, 0, sizeof (SOCKADDR_BTH));
716 fd = GNUNET_NETWORK_get_fd (dev->handle);
719 fprintf (stderr, "Failed to get the file descriptor\n");
722 if (SOCKET_ERROR == getsockname (fd, (SOCKADDR*)&addr, &addr_len))
724 fprintf (stderr, "Failed to get the port on which we are listening on: \n");
729 /* save the device address */
730 memcpy (&dev->pl_mac, &addr.btAddr, sizeof (BTH_ADDR));
732 /* set the address information */
733 memset (&addr_info, 0, sizeof (CSADDR_INFO));
734 addr_info.iProtocol = BTHPROTO_RFCOMM;
735 addr_info.iSocketType = SOCK_STREAM;
736 addr_info.LocalAddr.lpSockaddr = (LPSOCKADDR)&addr;
737 addr_info.LocalAddr.iSockaddrLength = sizeof (addr);
738 addr_info.RemoteAddr.lpSockaddr = (LPSOCKADDR)&addr;
739 addr_info.RemoteAddr.iSockaddrLength = sizeof (addr);
741 convert_guid((char *) uuid, &guid);
743 /* register the service */
744 memset (&wqs, 0, sizeof (WSAQUERYSET));
745 wqs.dwSize = sizeof (WSAQUERYSET);
746 wqs.dwNameSpace = NS_BTH;
747 wqs.lpszServiceInstanceName = "GNUnet Bluetooth Service";
748 wqs.lpszComment = "This is the service used by the GNUnnet plugin transport";
749 wqs.lpServiceClassId = &guid;
750 wqs.dwNumberOfCsAddrs = 1;
751 wqs.lpcsaBuffer = &addr_info ;
754 if (SOCKET_ERROR == WSASetService (&wqs , RNRSERVICE_REGISTER, 0))
756 fprintf (stderr, "Failed to register the SDP service: ");
762 fprintf (stderr, "The SDP service was registered\n");
769 * Function used for creating the service record and registering it.
771 * @param dev pointer to the device struct
772 * @param rc_channel the rfcomm channel
773 * @return 0 on success
776 register_service (struct HardwareInfos *dev, int rc_channel)
780 * 2. set the service ID, class, profile information
781 * 3. make the service record publicly browsable
782 * 4. register the RFCOMM channel
783 * 5. set the name, provider and description
784 * 6. register the service record to the local SDP server
787 uint8_t svc_uuid_int[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
788 dev->pl_mac.mac[5], dev->pl_mac.mac[4], dev->pl_mac.mac[3],
789 dev->pl_mac.mac[2], dev->pl_mac.mac[1], dev->pl_mac.mac[0]};
790 const char *service_dsc = "Bluetooth plugin services";
791 const char *service_prov = "GNUnet provider";
792 uuid_t root_uuid, rfcomm_uuid, svc_uuid;
793 sdp_list_t *root_list = 0, *rfcomm_list = 0, *proto_list = 0,
794 *access_proto_list = 0, *svc_list = 0;
795 sdp_record_t *record = 0;
796 sdp_data_t *channel = 0;
798 record = sdp_record_alloc();
800 /* Set the general service ID */
801 sdp_uuid128_create (&svc_uuid, &svc_uuid_int);
802 svc_list = sdp_list_append (0, &svc_uuid);
803 sdp_set_service_classes (record, svc_list);
804 sdp_set_service_id (record, svc_uuid);
806 /* Make the service record publicly browsable */
807 sdp_uuid16_create (&root_uuid, PUBLIC_BROWSE_GROUP);
808 root_list = sdp_list_append (0, &root_uuid);
809 sdp_set_browse_groups (record, root_list);
811 /* Register the RFCOMM channel */
812 sdp_uuid16_create (&rfcomm_uuid, RFCOMM_UUID);
813 channel = sdp_data_alloc (SDP_UINT8, &rc_channel);
814 rfcomm_list = sdp_list_append (0, &rfcomm_uuid);
815 sdp_list_append (rfcomm_list, channel);
816 proto_list = sdp_list_append (0, rfcomm_list);
818 /* Set protocol information */
819 access_proto_list = sdp_list_append (0, proto_list);
820 sdp_set_access_protos (record, access_proto_list);
822 /* Set the name, provider, and description */
823 sdp_set_info_attr (record, dev->iface, service_prov, service_dsc);
825 /* Connect to the local SDP server */
826 dev->session = sdp_connect (BDADDR_ANY, BDADDR_LOCAL, SDP_RETRY_IF_BUSY);
830 fprintf (stderr, "Failed to connect to the SDP server on interface `%.*s': %s\n",
831 IFNAMSIZ, dev->iface, strerror (errno));
836 /* Register the service record */
837 if (sdp_record_register (dev->session, record, 0) < 0)
839 fprintf (stderr, "Failed to register a service record on interface `%.*s': %s\n",
840 IFNAMSIZ, dev->iface, strerror (errno));
846 sdp_data_free (channel);
847 sdp_list_free (root_list, 0);
848 sdp_list_free (rfcomm_list, 0);
849 sdp_list_free (proto_list, 0);
850 sdp_list_free (access_proto_list, 0);
851 sdp_list_free (svc_list, 0);
852 sdp_record_free (record);
860 * Function for searching and browsing for a service. This will return the
861 * port number on which the service is running.
863 * @param dest target address
867 get_channel(const char *dest)
871 DWORD wqs_len = sizeof (WSAQUERYSET);
875 unsigned char uuid[] = GNUNET_BLUETOOTH_SDP_UUID;
876 convert_guid ((char *) uuid, &guid);
878 wqs = (WSAQUERYSET*)malloc (wqs_len);
879 ZeroMemory (wqs, wqs_len);
881 wqs->dwSize = sizeof (WSAQUERYSET) ;
882 wqs->lpServiceClassId = &guid;
883 wqs->dwNameSpace = NS_BTH;
884 wqs->dwNumberOfCsAddrs = 0;
885 wqs->lpszContext = (LPSTR)dest;
887 if (SOCKET_ERROR == WSALookupServiceBegin (wqs, LUP_FLUSHCACHE | LUP_RETURN_ALL, &h))
889 if (GetLastError() == WSASERVICE_NOT_FOUND)
891 fprintf (stderr, "WARNING! The device with address %s wasn't found. Skipping the message!", dest);
896 fprintf (stderr, "Failed to find the port number: ");
903 /* search the sdp service */
906 if (SOCKET_ERROR == WSALookupServiceNext (h, LUP_FLUSHCACHE | LUP_RETURN_ALL, &wqs_len, wqs))
908 int error = WSAGetLastError();
914 wqs = (WSAQUERYSET*)malloc (wqs_len);
917 fprintf (stderr, "Failed! The address was valid but there was no data record of requested type\n");
924 fprintf (stderr, "Failed to look over the services: ");
926 WSALookupServiceEnd (h);
932 channel = ((SOCKADDR_BTH*)wqs->lpcsaBuffer->RemoteAddr.lpSockaddr)->port;
937 WSALookupServiceEnd (h);
943 * Function used for searching and browsing for a service. This will return the
944 * port number on which the service is running.
946 * @param dev pointer to the device struct
947 * @param dest target address
951 get_channel(struct HardwareInfos *dev, bdaddr_t dest)
954 * 1. detect all nearby devices
955 * 2. for each device:
956 * 2.1. connect to the SDP server running
957 * 2.2. get a list of service records with the specific UUID
958 * 2.3. for each service record get a list of the protocol sequences and get
961 uint8_t svc_uuid_int[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
962 dest.b[5], dest.b[4], dest.b[3],
963 dest.b[2], dest.b[1], dest.b[0]};
964 sdp_session_t *session = 0;
965 sdp_list_t *search_list = 0, *attrid_list = 0, *response_list = 0, *it = 0;
967 uint32_t range = 0x0000ffff;
968 uint8_t channel = -1;
970 /* Connect to the local SDP server */
971 session = sdp_connect (BDADDR_ANY, &dest, 0);
974 fprintf (stderr, "Failed to connect to the SDP server on interface `%.*s': %s\n",
975 IFNAMSIZ, dev->iface, strerror (errno));
979 sdp_uuid128_create (&svc_uuid, &svc_uuid_int);
980 search_list = sdp_list_append (0, &svc_uuid);
981 attrid_list = sdp_list_append (0, &range);
983 if (sdp_service_search_attr_req (session, search_list,
984 SDP_ATTR_REQ_RANGE, attrid_list, &response_list) == 0)
986 for (it = response_list; it; it = it->next)
988 sdp_record_t *record = (sdp_record_t*) it->data;
989 sdp_list_t *proto_list = 0;
990 if (sdp_get_access_protos (record, &proto_list) == 0)
992 channel = sdp_get_proto_port (proto_list, RFCOMM_UUID);
993 sdp_list_free (proto_list, 0);
995 sdp_record_free (record);
999 sdp_list_free (search_list, 0);
1000 sdp_list_free (attrid_list, 0);
1001 sdp_list_free (response_list, 0);
1003 sdp_close (session);
1006 fprintf (stderr, "Failed to find the listening channel for interface `%.*s': %s\n",
1007 IFNAMSIZ, dev->iface, strerror (errno));
1014 * Read from the socket and put the result into the buffer for transmission to 'stdout'.
1016 * @param sock file descriptor for reading
1017 * @param buf buffer to read to; first bytes will be the 'struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame',
1018 * followed by the actual payload
1019 * @param buf_size size of the buffer
1020 * @param ri where to write radiotap_rx info
1021 * @return number of bytes written to 'buf'
1024 read_from_the_socket (void *sock,
1025 unsigned char *buf, size_t buf_size,
1026 struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage *ri)
1028 unsigned char tmpbuf[buf_size];
1032 count = GNUNET_NETWORK_socket_recv ((struct GNUNET_NETWORK_Handle *)sock, tmpbuf, buf_size);
1034 count = read (*((int *)sock), tmpbuf, buf_size);
1039 if (EAGAIN == errno)
1044 fprintf (stderr, "Failed to read from the HCI socket: %s\n", strerror (errno));
1051 /* Get the channel used */
1053 struct sockaddr_rc rc_addr = { 0 };
1055 memset (&rc_addr, 0, sizeof (rc_addr));
1056 len = sizeof (rc_addr);
1057 if (0 > getsockname (*((int *)sock), (struct sockaddr *) &rc_addr, (socklen_t *) &len))
1059 fprintf (stderr, "getsockname() call failed : %s\n", strerror (errno));
1063 memset (ri, 0, sizeof (*ri));
1064 ri->ri_channel = rc_addr.rc_channel;
1067 /* Detect CRC32 at the end */
1068 if (0 == check_crc_buf_osdep (tmpbuf, count - sizeof (uint32_t)))
1070 count -= sizeof(uint32_t);
1073 memcpy (buf, tmpbuf, count);
1080 * Open the bluetooth interface for reading/writing
1082 * @param dev pointer to the device struct
1083 * @return 0 on success, non-zero on error
1086 open_device (struct HardwareInfos *dev)
1091 /* bind the RFCOMM socket to the interface */
1092 addr.addressFamily = AF_BTH;
1094 addr.port = BT_PORT_ANY;
1097 GNUNET_NETWORK_socket_bind (dev->handle, (const SOCKADDR*)&addr, sizeof (SOCKADDR_BTH)))
1099 fprintf (stderr, "Failed to bind the socket: ");
1100 if (GetLastError() == WSAENETDOWN)
1102 fprintf (stderr, "Please make sure that your Bluetooth device is ON!\n");
1109 /* start listening on the socket */
1110 if (GNUNET_NETWORK_socket_listen (dev->handle, 4) != GNUNET_OK)
1112 fprintf (stderr, "Failed to listen on the socket: ");
1117 /* register the sdp service */
1118 if (register_service(dev) != 0)
1120 fprintf (stderr, "Failed to register a service: ");
1125 int i, dev_id = -1, fd_hci;
1128 struct hci_dev_list_req list;
1129 struct hci_dev_req dev[HCI_MAX_DEV];
1130 } request; //used for detecting the local devices
1131 struct sockaddr_rc rc_addr = { 0 }; //used for binding
1133 /* Initialize the neighbour structure */
1134 neighbours.dev_id = -1;
1135 for (i = 0; i < MAX_PORTS; i++)
1136 neighbours.fds[i] = -1;
1138 /* Open a HCI socket */
1139 fd_hci = socket (AF_BLUETOOTH, SOCK_RAW, BTPROTO_HCI);
1144 "Failed to create HCI socket: %s\n",
1149 memset (&request, 0, sizeof(request));
1150 request.list.dev_num = HCI_MAX_DEV;
1152 if (ioctl (fd_hci, HCIGETDEVLIST, (void *) &request) < 0)
1155 "ioctl(HCIGETDEVLIST) on interface `%.*s' failed: %s\n",
1159 (void) close (fd_hci);
1163 /* Search for a device with dev->iface name */
1164 for (i = 0; i < request.list.dev_num; i++)
1166 struct hci_dev_info dev_info;
1168 memset (&dev_info, 0, sizeof(struct hci_dev_info));
1169 dev_info.dev_id = request.dev[i].dev_id;
1170 strncpy (dev_info.name, dev->iface, BLUEZ_DEVNAME_SIZE);
1172 if (ioctl (fd_hci, HCIGETDEVINFO, (void *) &dev_info))
1175 "ioctl(HCIGETDEVINFO) on interface `%.*s' failed: %s\n",
1179 (void) close (fd_hci);
1183 if (strncmp (dev_info.name, dev->iface, BLUEZ_DEVNAME_SIZE) == 0)
1186 dev_id = dev_info.dev_id; //the device was found
1188 * Copy the MAC address to the device structure
1190 memcpy (&dev->pl_mac, &dev_info.bdaddr, sizeof (bdaddr_t));
1192 /* Check if the interface is up */
1193 if (hci_test_bit (HCI_UP, (void *) &dev_info.flags) == 0)
1195 /* Bring the interface up */
1196 if (ioctl (fd_hci, HCIDEVUP, dev_info.dev_id))
1199 "ioctl(HCIDEVUP) on interface `%.*s' failed: %s\n",
1203 (void) close (fd_hci);
1208 /* Check if the device is discoverable */
1209 if (hci_test_bit (HCI_PSCAN, (void *) &dev_info.flags) == 0 ||
1210 hci_test_bit (HCI_ISCAN, (void *) &dev_info.flags) == 0)
1212 /* Set interface Page Scan and Inqury Scan ON */
1213 struct hci_dev_req dev_req;
1215 memset (&dev_req, 0, sizeof (dev_req));
1216 dev_req.dev_id = dev_info.dev_id;
1217 dev_req.dev_opt = SCAN_PAGE | SCAN_INQUIRY;
1219 if (ioctl (fd_hci, HCISETSCAN, (unsigned long) &dev_req))
1222 "ioctl(HCISETSCAN) on interface `%.*s' failed: %s\n",
1226 (void) close (fd_hci);
1236 /* Check if the interface was not found */
1240 "The interface %s was not found\n",
1242 (void) close (fd_hci);
1246 /* Close the hci socket */
1247 (void) close(fd_hci);
1251 /* Bind the rfcomm socket to the interface */
1252 memset (&rc_addr, 0, sizeof (rc_addr));
1253 rc_addr.rc_family = AF_BLUETOOTH;
1254 rc_addr.rc_bdaddr = *BDADDR_ANY;
1256 if (bind_socket (dev->fd_rfcomm, &rc_addr) != 0)
1259 "Failed to bind interface `%.*s': %s\n",
1266 /* Register a SDP service */
1267 if (register_service (dev, rc_addr.rc_channel) != 0)
1270 "Failed to register a service on interface `%.*s': %s\n",
1272 dev->iface, strerror (errno));
1276 /* Switch socket in listening mode */
1277 if (listen (dev->fd_rfcomm, 5) == -1) //FIXME: probably we need a bigger number
1279 fprintf (stderr, "Failed to listen on socket for interface `%.*s': %s\n", IFNAMSIZ,
1280 dev->iface, strerror (errno));
1291 * Set the header to sane values to make attacks more difficult
1293 * @param taIeeeHeader pointer to the header of the packet
1294 * @param dev pointer to the Hardware_Infos struct
1296 **** copy from gnunet-helper-transport-wlan.c ****
1299 mac_set (struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame *taIeeeHeader,
1300 const struct HardwareInfos *dev)
1302 taIeeeHeader->frame_control = htons (IEEE80211_FC0_TYPE_DATA);
1303 taIeeeHeader->addr3 = mac_bssid_gnunet;
1306 memcpy (&taIeeeHeader->addr2, &dev->pl_mac, sizeof (struct GNUNET_TRANSPORT_WLAN_MacAddress));
1308 taIeeeHeader->addr2 = dev->pl_mac;
1314 * Test if the given interface name really corresponds to a bluetooth
1317 * @param iface name of the interface
1318 * @return 0 on success, 1 on error
1319 **** similar with the one from gnunet-helper-transport-wlan.c ****
1322 test_bluetooth_interface (const char *iface)
1328 ret = snprintf (strbuf, sizeof (strbuf),
1329 "/sys/class/bluetooth/%s/subsystem",
1331 if ((ret < 0) || (ret >= sizeof (strbuf)) || (0 != stat (strbuf, &sbuf)))
1334 "Did not find 802.15.1 interface `%s'. Exiting.\n",
1343 * Test incoming packets mac for being our own.
1345 * @param taIeeeHeader buffer of the packet
1346 * @param dev the Hardware_Infos struct
1347 * @return 0 if mac belongs to us, 1 if mac is for another target
1349 **** same as the one from gnunet-helper-transport-wlan.c ****
1352 mac_test (const struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame *taIeeeHeader,
1353 const struct HardwareInfos *dev)
1355 static struct GNUNET_TRANSPORT_WLAN_MacAddress all_zeros;
1357 if ( (0 == memcmp (&taIeeeHeader->addr3, &all_zeros, MAC_ADDR_SIZE)) ||
1358 (0 == memcmp (&taIeeeHeader->addr1, &all_zeros, MAC_ADDR_SIZE)) )
1359 return 0; /* some drivers set no Macs, then assume it is all for us! */
1361 if (0 != memcmp (&taIeeeHeader->addr3, &mac_bssid_gnunet, MAC_ADDR_SIZE))
1362 return 1; /* not a GNUnet ad-hoc package */
1363 if ( (0 == memcmp (&taIeeeHeader->addr1, &dev->pl_mac, MAC_ADDR_SIZE)) ||
1364 (0 == memcmp (&taIeeeHeader->addr1, &bc_all_mac, MAC_ADDR_SIZE)) )
1365 return 0; /* for us, or broadcast */
1366 return 1; /* not for us */
1371 * Process data from the stdin. Takes the message, forces the sender MAC to be correct
1372 * and puts it into our buffer for transmission to the receiver.
1374 * @param cls pointer to the device struct ('struct HardwareInfos*')
1375 * @param hdr pointer to the start of the packet
1377 **** same as the one from gnunet-helper-transport-wlan.c ****
1380 stdin_send_hw (void *cls, const struct GNUNET_MessageHeader *hdr)
1382 struct HardwareInfos *dev = cls;
1383 const struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage *header;
1384 struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame *blueheader;
1387 sendsize = ntohs (hdr->size);
1389 sizeof (struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage)) ||
1390 (GNUNET_MESSAGE_TYPE_WLAN_DATA_TO_HELPER != ntohs (hdr->type)) )
1392 fprintf (stderr, "Received malformed message\n");
1395 sendsize -= (sizeof (struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage) -
1396 sizeof (struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame));
1397 if (MAXLINE < sendsize)
1399 fprintf (stderr, "Packet too big for buffer\n");
1402 header = (const struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage *) hdr;
1403 memcpy (&write_pout.buf, &header->frame, sendsize);
1404 blueheader = (struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame *) &write_pout.buf;
1406 /* payload contains MAC address, but we don't trust it, so we'll
1407 * overwrite it with OUR MAC address to prevent mischief */
1408 mac_set (blueheader, dev);
1409 memcpy (&blueheader->addr1, &header->frame.addr1,
1410 sizeof (struct GNUNET_TRANSPORT_WLAN_MacAddress));
1411 write_pout.size = sendsize;
1416 * Broadcast a HELLO message for peer discovery
1418 * @param dev pointer to the device struct
1419 * @param dev pointer to the socket which was added to the set
1420 * @return 0 on success
1423 send_broadcast (struct HardwareInfos *dev, int *sendsocket)
1429 if ((neighbours.size == neighbours.pos && new_device == 1) || neighbours.size == 0)
1431 inquiry_devices: //skip the conditions and force a inquiry for new devices
1434 * It means that I sent HELLO messages to all the devices from the list and I should search
1435 * for new ones or that this is the first time when I do a search.
1437 inquiry_info *devices = NULL;
1438 int i, responses, max_responses = MAX_PORTS;
1441 if (neighbours.size >= MAX_PORTS)
1443 fprintf (stderr, "%.*s reached the top limit for the discovarable devices\n", IFNAMSIZ, dev->iface);
1447 /* Get the device id */
1448 if (neighbours.dev_id == -1)
1450 char addr[19] = { 0 }; //the device MAC address
1452 ba2str ((bdaddr_t *) &dev->pl_mac, addr);
1453 neighbours.dev_id = hci_devid (addr);
1454 if (neighbours.dev_id < 0)
1456 fprintf (stderr, "Failed to get the device id for interface %.*s : %s\n", IFNAMSIZ,
1457 dev->iface, strerror (errno));
1462 devices = malloc (max_responses * sizeof (inquiry_info));
1463 if (devices == NULL)
1465 fprintf (stderr, "Failed to allocate memory for inquiry info list on interface %.*s\n", IFNAMSIZ,
1470 responses = hci_inquiry (neighbours.dev_id, 8, max_responses, NULL, &devices, IREQ_CACHE_FLUSH);
1473 fprintf (stderr, "Failed to inquiry on interface %.*s\n", IFNAMSIZ, dev->iface);
1477 fprintf (stderr, "LOG : Found %d devices\n", responses); //FIXME delete it after debugging stage
1481 fprintf (stderr, "LOG : No devices discoverable\n");
1485 for (i = 0; i < responses; i++)
1493 fprintf (stderr, "%.*s reached the top limit for the discoverable devices (after inquiry)\n", IFNAMSIZ,
1498 /* Search if the address already exists on the list */
1499 for (j = 0; j < neighbours.size; j++)
1501 if (memcmp (&(devices + i)->bdaddr, &(neighbours.devices[j]), sizeof (bdaddr_t)) == 0)
1504 fprintf (stderr, "LOG : the device already exists on the list\n"); //FIXME debugging message
1511 char addr[19] = { 0 };
1513 ba2str (&(devices +i)->bdaddr, addr);
1514 fprintf (stderr, "LOG : %s was added to the list\n", addr); //FIXME debugging message
1515 memcpy (&(neighbours.devices[neighbours.size++]), &(devices + i)->bdaddr, sizeof (bdaddr_t));
1523 int connection_successful = 0;
1524 struct sockaddr_rc addr_rc = { 0 };
1526 addr_rc.rc_family = AF_BLUETOOTH;
1528 /* Try to connect to a new device from the list */
1529 while (neighbours.pos < neighbours.size)
1531 /* Check if we are already connected to this device */
1532 if (neighbours.fds[neighbours.pos] == -1)
1535 memset (&addr_rc.rc_bdaddr, 0, sizeof (addr_rc.rc_bdaddr));
1536 memcpy (&addr_rc.rc_bdaddr, &(neighbours.devices[neighbours.pos]), sizeof (addr_rc.rc_bdaddr));
1538 addr_rc.rc_channel = get_channel (dev, addr_rc.rc_bdaddr);
1540 *sendsocket = socket (AF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM);
1541 if ( (-1 < *sendsocket) &&
1542 (0 == connect (*sendsocket,
1543 (struct sockaddr *) &addr_rc,
1544 sizeof (addr_rc))) )
1546 neighbours.fds[neighbours.pos++] = *sendsocket;
1547 connection_successful = 1;
1548 char addr[19] = { 0 };
1549 ba2str (&(neighbours.devices[neighbours.pos - 1]), addr);
1550 fprintf (stderr, "LOG : Connected to %s\n", addr);
1555 char addr[19] = { 0 };
1556 errno_copy = errno; //Save a copy for later
1558 if (-1 != *sendsocket)
1560 (void) close (*sendsocket);
1563 ba2str (&(neighbours.devices[neighbours.pos]), addr);
1565 "LOG : Couldn't connect on device %s, error : %s\n",
1568 if (errno != ECONNREFUSED) //FIXME be sure that this works
1570 fprintf (stderr, "LOG : Removes %d device from the list\n", neighbours.pos);
1571 /* Remove the device from the list */
1572 memcpy (&neighbours.devices[neighbours.pos], &neighbours.devices[neighbours.size - 1], sizeof (bdaddr_t));
1573 memset (&neighbours.devices[neighbours.size - 1], 0, sizeof (bdaddr_t));
1574 neighbours.fds[neighbours.pos] = neighbours.fds[neighbours.size - 1];
1575 neighbours.fds[neighbours.size - 1] = -1;
1576 neighbours.size -= 1;
1579 neighbours.pos += 1;
1581 if (neighbours.pos >= neighbours.size)
1586 if (loops == MAX_LOOPS) //don't get stuck trying to connect to one device
1592 fprintf (stderr, "LOG : Search for a new device\n"); //FIXME debugging message
1593 neighbours.pos += 1;
1597 /* Cycle on the list */
1598 if (neighbours.pos == neighbours.size)
1601 searching_devices_count += 1;
1603 if (searching_devices_count == MAX_LOOPS)
1605 fprintf (stderr, "LOG : Force to inquiry for new devices\n");
1606 searching_devices_count = 0;
1607 goto inquiry_devices;
1610 /* If a new device wasn't found, search an old one */
1611 if (connection_successful == 0)
1613 int loop_check = neighbours.pos;
1614 while (neighbours.fds[neighbours.pos] == -1)
1616 if (neighbours.pos == neighbours.size)
1619 if (neighbours.pos == loop_check)
1621 if (errno_copy == ECONNREFUSED)
1623 fprintf (stderr, "LOG : No device found. Go back and search again\n"); //FIXME debugging message
1626 goto search_for_devices;
1630 return 1; // Skip the broadcast message
1634 neighbours.pos += 1;
1637 *sendsocket = neighbours.fds[neighbours.pos++];
1645 * Main function of the helper. This code accesses a bluetooth interface
1646 * forwards traffic in both directions between the bluetooth interface and
1647 * stdin/stdout of this process. Error messages are written to stderr.
1649 * @param argc number of arguments, must be 2
1650 * @param argv arguments only argument is the name of the interface (i.e. 'hci0')
1651 * @return 0 on success (never happens, as we don't return unless aborted), 1 on error
1653 **** similar to gnunet-helper-transport-wlan.c ****
1656 main (int argc, char *argv[])
1659 struct HardwareInfos dev;
1660 char readbuf[MAXLINE];
1665 struct MessageStreamTokenizer *stdin_mst;
1668 int crt_rfds = 0, rfds_list[MAX_PORTS];
1669 int broadcast, sendsocket;
1670 /* Assert privs so we can modify the firewall rules! */
1672 #ifdef HAVE_SETRESUID
1673 if (0 != setresuid (uid, 0, 0))
1675 fprintf (stderr, "Failed to setresuid to root: %s\n", strerror (errno));
1679 if (0 != seteuid (0))
1681 fprintf (stderr, "Failed to seteuid back to root: %s\n", strerror (errno));
1686 /* Make use of SGID capabilities on POSIX */
1687 memset (&dev, 0, sizeof (dev));
1688 dev.fd_rfcomm = socket (AF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM);
1689 raw_eno = errno; /* remember for later */
1691 /* Now that we've dropped root rights, we can do error checking */
1694 fprintf (stderr, "You must specify the name of the interface as the first \
1695 and only argument to this program.\n");
1696 if (-1 != dev.fd_rfcomm)
1697 (void) close (dev.fd_rfcomm);
1701 if (-1 == dev.fd_rfcomm)
1703 fprintf (stderr, "Failed to create a RFCOMM socket: %s\n", strerror (raw_eno));
1706 if (dev.fd_rfcomm >= FD_SETSIZE)
1708 fprintf (stderr, "File descriptor too large for select (%d > %d)\n",
1709 dev.fd_rfcomm, FD_SETSIZE);
1710 (void) close (dev.fd_rfcomm);
1713 if (0 != test_bluetooth_interface (argv[1]))
1715 (void) close (dev.fd_rfcomm);
1718 strncpy (dev.iface, argv[1], IFNAMSIZ);
1719 if (0 != open_device (&dev))
1721 (void) close (dev.fd_rfcomm);
1727 uid_t uid = getuid ();
1728 #ifdef HAVE_SETRESUID
1729 if (0 != setresuid (uid, uid, uid))
1731 fprintf (stderr, "Failed to setresuid: %s\n", strerror (errno));
1732 if (-1 != dev.fd_rfcomm)
1733 (void) close (dev.fd_rfcomm);
1737 if (0 != (setuid (uid) | seteuid (uid)))
1739 fprintf (stderr, "Failed to setuid: %s\n", strerror (errno));
1740 if (-1 != dev.fd_rfcomm)
1741 (void) close (dev.fd_rfcomm);
1747 /* Send MAC address of the bluetooth interface to STDOUT first */
1749 struct GNUNET_TRANSPORT_WLAN_HelperControlMessage macmsg;
1751 macmsg.hdr.size = htons (sizeof (macmsg));
1752 macmsg.hdr.type = htons (GNUNET_MESSAGE_TYPE_WLAN_HELPER_CONTROL);
1753 memcpy (&macmsg.mac, &dev.pl_mac, sizeof (struct GNUNET_TRANSPORT_WLAN_MacAddress));
1754 memcpy (write_std.buf, &macmsg, sizeof (macmsg));
1755 write_std.size = sizeof (macmsg);
1759 stdin_mst = mst_create (&stdin_send_hw, &dev);
1763 * TODO : I should make the time out of a mac endpoint smaller and check if the rate
1764 * from get_wlan_header (plugin_transport_bluetooth.c) is correct.
1773 if ((0 == write_pout.size) && (1 == stdin_open))
1775 FD_SET (STDIN_FILENO, &rfds);
1776 maxfd = MAX (maxfd, STDIN_FILENO);
1778 if (0 == write_std.size)
1780 FD_SET (dev.fd_rfcomm, &rfds);
1781 maxfd = MAX (maxfd, dev.fd_rfcomm);
1784 for (i = 0; i < crt_rfds; i++) // it can receive messages from multiple devices
1786 FD_SET (rfds_list[i], &rfds);
1787 maxfd = MAX (maxfd, rfds_list[i]);
1790 if (0 < write_std.size)
1792 FD_SET (STDOUT_FILENO, &wfds);
1793 maxfd = MAX (maxfd, STDOUT_FILENO);
1795 if (0 < write_pout.size) //it can send messages only to one device per loop
1797 struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame *frame;
1798 /* Get the destination address */
1799 frame = (struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame *) write_pout.buf;
1801 if (memcmp (&frame->addr1, &dev.pl_mac,
1802 sizeof (struct GNUNET_TRANSPORT_WLAN_MacAddress)) == 0)
1805 memset (&write_pout, 0, sizeof (write_pout)); //clear the buffer
1807 else if (memcmp (&frame->addr1, &broadcast_address,
1808 sizeof (struct GNUNET_TRANSPORT_WLAN_MacAddress)) == 0)
1810 fprintf (stderr, "LOG : %s has a broadcast message (pos %d, size %d)\n", dev.iface, neighbours.pos, neighbours.size); //FIXME: debugging message
1812 if (send_broadcast(&dev, &sendsocket) != 0) //if the searching wasn't successful don't get stuck on the select stage
1815 memset (&write_pout, 0, sizeof (write_pout)); //remove the message
1816 fprintf (stderr, "LOG : Skipping the broadcast message (pos %d, size %d)\n", neighbours.pos, neighbours.size);
1820 FD_SET (sendsocket, &wfds);
1821 maxfd = MAX (maxfd, sendsocket);
1828 /* Search if the address already exists on the list */
1829 for (i = 0; i < neighbours.size; i++)
1831 if (memcmp (&frame->addr1, &(neighbours.devices[i]), sizeof (bdaddr_t)) == 0)
1834 if (neighbours.fds[i] != -1)
1836 found = 1; //save the position where it was found
1837 FD_SET (neighbours.fds[i], &wfds);
1838 maxfd = MAX (maxfd, neighbours.fds[i]);
1839 sendsocket = neighbours.fds[i];
1840 fprintf (stderr, "LOG: the address was found in the list\n");
1848 struct sockaddr_rc addr = { 0 };
1850 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,
1851 frame->addr1.mac[5], frame->addr1.mac[4], frame->addr1.mac[3],
1852 frame->addr1.mac[2], frame->addr1.mac[1], frame->addr1.mac[0]); //FIXME: debugging message
1854 sendsocket = socket (AF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM);
1858 fprintf (stderr, "Failed to create a RFCOMM socket (sending stage): %s\n",
1863 memcpy (&addr.rc_bdaddr, &frame->addr1, sizeof (bdaddr_t));
1864 addr.rc_family = AF_BLUETOOTH;
1865 addr.rc_channel = get_channel (&dev, addr.rc_bdaddr);
1869 status = connect (sendsocket, (struct sockaddr *) &addr, sizeof (addr));
1870 if (0 != status && errno != EAGAIN)
1872 if (errno == ECONNREFUSED && tries < 2)
1874 fprintf (stderr, "LOG : %.*s failed to connect. Trying again!\n", IFNAMSIZ, dev.iface);
1878 else if (errno == EBADF)
1880 fprintf (stderr, "LOG : %s failed to connect : %s. Skip it!\n", dev.iface, strerror (errno));
1881 memset (&write_pout, 0, sizeof (write_pout));
1886 fprintf (stderr, "LOG : %s failed to connect : %s. Try again later!\n", dev.iface, strerror (errno));
1887 memset (&write_pout, 0, sizeof (write_pout));
1894 FD_SET (sendsocket, &wfds);
1895 maxfd = MAX (maxfd, sendsocket);
1896 fprintf (stderr, "LOG : Connection successful\n");
1897 if (pos != 0) // save the socket
1899 neighbours.fds[pos] = sendsocket;
1903 /* Add the new device to the discovered devices list */
1904 if (neighbours.size < MAX_PORTS)
1906 neighbours.fds[neighbours.size] = sendsocket;
1907 memcpy (&(neighbours.devices[neighbours.size++]), &addr.rc_bdaddr, sizeof (bdaddr_t));
1911 fprintf (stderr, "The top limit for the discovarable devices' list was reached\n");
1921 /* Select a fd which is ready for action :) */
1923 int retval = select (maxfd + 1, &rfds, &wfds, NULL, NULL);
1924 if ((-1 == retval) && (EINTR == errno))
1926 if (0 > retval && errno != EBADF) // we handle BADF errors later
1928 fprintf (stderr, "select failed: %s\n", strerror (errno));
1932 if (FD_ISSET (STDOUT_FILENO , &wfds))
1935 write (STDOUT_FILENO, write_std.buf + write_std.pos,
1936 write_std.size - write_std.pos);
1939 fprintf (stderr, "Failed to write to STDOUT: %s\n", strerror (errno));
1942 write_std.pos += ret;
1943 if (write_std.pos == write_std.size)
1948 fprintf (stderr, "LOG : %s sends a message to STDOUT\n", dev.iface); //FIXME: debugging message
1951 if (-1 != sendsocket)
1953 if (FD_ISSET (sendsocket , &wfds))
1955 ssize_t ret = write (sendsocket,
1956 write_pout.buf + write_std.pos,
1957 write_pout.size - write_pout.pos);
1958 if (0 > ret) //FIXME should I first check the error type?
1960 fprintf (stderr, "Failed to write to bluetooth device: %s. Closing the socket!\n",
1962 for (i = 0; i < neighbours.size; i++)
1964 if (neighbours.fds[i] == sendsocket)
1966 (void) close(sendsocket);
1967 neighbours.fds[i] = -1;
1971 /* Remove the message */
1972 memset (&write_pout.buf + write_std.pos, 0, (write_pout.size - write_pout.pos));
1973 write_pout.pos = 0 ;
1974 write_pout.size = 0;
1978 write_pout.pos += ret;
1979 if ((write_pout.pos != write_pout.size) && (0 != ret))
1981 /* We should not get partial sends with packet-oriented devices... */
1982 fprintf (stderr, "Write error, partial send: %u/%u\n",
1983 (unsigned int) write_pout.pos,
1984 (unsigned int) write_pout.size);
1988 if (write_pout.pos == write_pout.size)
1991 write_pout.size = 0;
1993 fprintf (stderr, "LOG : %s sends a message to a DEVICE\n", dev.iface); //FIXME: debugging message
1997 for (i = 0; i <= maxfd; i++)
1999 if (FD_ISSET (i, &rfds))
2001 if (i == STDIN_FILENO)
2004 read (i, readbuf, sizeof (readbuf));
2008 "Read error from STDIN: %s\n",
2014 /* stop reading... */
2019 mst_receive (stdin_mst, readbuf, ret);
2020 fprintf (stderr, "LOG : %s receives a message from STDIN\n", dev.iface); //FIXME: debugging message
2023 else if (i == dev.fd_rfcomm)
2026 struct sockaddr_rc addr = { 0 };
2027 unsigned int opt = sizeof (addr);
2029 readsocket = accept (dev.fd_rfcomm, (struct sockaddr *) &addr, &opt);
2030 fprintf(stderr, "LOG : %s accepts a message\n", dev.iface); //FIXME: debugging message
2031 if (readsocket == -1)
2033 fprintf (stderr, "Failed to accept a connection on interface: %.*s\n", IFNAMSIZ,
2039 FD_SET (readsocket, &rfds);
2040 maxfd = MAX (maxfd, readsocket);
2042 if (crt_rfds < MAX_PORTS)
2043 rfds_list[crt_rfds++] = readsocket;
2046 fprintf (stderr, "The limit for the read file descriptors list was \
2055 struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage *rrm;
2057 fprintf (stderr, "LOG : %s reads something from the socket\n", dev.iface);//FIXME : debugging message
2058 rrm = (struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage *) write_std.buf;
2060 read_from_the_socket ((void *)&i, (unsigned char *) &rrm->frame,
2061 sizeof (write_std.buf)
2062 - sizeof (struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage)
2063 + sizeof (struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame),
2070 /* Remove the socket from the list */
2071 for (j = 0; j < crt_rfds; j++)
2073 if (rfds_list[j] == i)
2075 rfds_list[j] ^= rfds_list[crt_rfds - 1];
2076 rfds_list[crt_rfds - 1] ^= rfds_list[j];
2077 rfds_list[j] ^= rfds_list[crt_rfds - 1];
2083 fprintf (stderr, "Read error from raw socket: %s\n", strerror (errno));
2086 if ((0 < ret) && (0 == mac_test (&rrm->frame, &dev)))
2088 write_std.size = ret
2089 + sizeof (struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage)
2090 - sizeof (struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame);
2091 rrm->header.size = htons (write_std.size);
2092 rrm->header.type = htons (GNUNET_MESSAGE_TYPE_WLAN_DATA_FROM_HELPER);
2099 /* Error handling, try to clean up a bit at least */
2100 mst_destroy (stdin_mst);
2102 sdp_close (dev.session);
2103 (void) close (dev.fd_rfcomm);
2104 if (-1 != sendsocket)
2105 (void) close (sendsocket);
2107 for (i = 0; i < crt_rfds; i++)
2108 (void) close (rfds_list[i]);
2110 for (i = 0; i < neighbours.size; i++)
2111 (void) close (neighbours.fds[i]);
2113 struct HardwareInfos dev;
2114 struct GNUNET_NETWORK_Handle *sendsocket;
2115 struct GNUNET_NETWORK_FDSet *rfds;
2116 struct GNUNET_NETWORK_FDSet *wfds;
2117 struct GNUNET_NETWORK_Handle *rfds_list[MAX_PORTS];
2118 char readbuf[MAXLINE] = { 0 };
2119 SOCKADDR_BTH acc_addr = { 0 };
2120 int addr_len = sizeof (SOCKADDR_BTH);
2121 int broadcast, i, stdin_open, crt_rfds = 0;
2122 HANDLE stdin_handle = GetStdHandle (STD_INPUT_HANDLE);
2123 HANDLE stdout_handle = GetStdHandle (STD_OUTPUT_HANDLE);
2124 struct MessageStreamTokenizer *stdin_mst;
2126 /* check the handles */
2127 if (stdin_handle == INVALID_HANDLE_VALUE)
2129 fprintf (stderr, "Failed to get the stdin handle\n");
2133 if (stdout_handle == INVALID_HANDLE_VALUE)
2135 fprintf (stderr, "Failed to get the stdout handle\n");
2139 /* initialize windows sockets */
2140 initialize_windows_sockets();
2142 // /* test bluetooth socket family support */ --> it return false because the GNUNET_NETWORK_test_pf should also receive the type of socket (BTHPROTO_RFCOMM)
2143 // if (GNUNET_NETWORK_test_pf (AF_BTH) != GNUNET_OK)
2145 // fprintf (stderr, "AF_BTH family is not supported\n");
2149 /* create the socket */
2150 dev.handle = GNUNET_NETWORK_socket_create (AF_BTH, SOCK_STREAM, BTHPROTO_RFCOMM);
2151 if (dev.handle == NULL)
2153 fprintf (stderr, "Failed to create RFCOMM socket: ");
2159 if (open_device (&dev) == -1)
2161 fprintf (stderr, "Failed to open the device\n");
2163 if (GNUNET_NETWORK_socket_close (dev.handle) != GNUNET_OK)
2165 fprintf (stderr, "Failed to close the socket!\n");
2171 if (GNUNET_OK != GNUNET_NETWORK_socket_set_blocking (dev.handle, 1) )
2173 fprintf (stderr, "Failed to change the socket mode\n");
2177 memset (&write_std, 0, sizeof (write_std));
2178 memset (&write_pout, 0, sizeof (write_pout));
2181 rfds = GNUNET_NETWORK_fdset_create ();
2182 wfds = GNUNET_NETWORK_fdset_create ();
2184 /* Send MAC address of the bluetooth interface to STDOUT first */
2186 struct GNUNET_TRANSPORT_WLAN_HelperControlMessage macmsg;
2188 macmsg.hdr.size = htons (sizeof (macmsg));
2189 macmsg.hdr.type = htons (GNUNET_MESSAGE_TYPE_WLAN_HELPER_CONTROL);
2190 memcpy (&macmsg.mac, &dev.pl_mac, sizeof (struct GNUNET_TRANSPORT_WLAN_MacAddress_Copy));
2191 memcpy (write_std.buf, &macmsg, sizeof (macmsg));
2192 write_std.size = sizeof (macmsg);
2196 stdin_mst = mst_create (&stdin_send_hw, &dev);
2201 int stdout_pos = -1;
2208 sendsocket = NULL; //FIXME ???memleaks
2210 GNUNET_NETWORK_fdset_zero (rfds);
2211 if ((0 == write_pout.size) && (1 == stdin_open))
2215 GNUNET_NETWORK_fdset_handle_set (rfds, (struct GNUNET_DISK_FileHandle*) &stdin_handle);
2218 if (0 == write_std.size)
2221 GNUNET_NETWORK_fdset_set (rfds, dev.handle);
2224 for (i = 0; i < crt_rfds; i++)
2227 GNUNET_NETWORK_fdset_set (rfds, rfds_list[i]);
2230 GNUNET_NETWORK_fdset_zero (wfds);
2231 if (0 < write_std.size)
2234 GNUNET_NETWORK_fdset_handle_set (wfds, (struct GNUNET_DISK_FileHandle*) &stdout_handle);
2235 // printf ("%s\n", write_std.buf);
2236 // memset (write_std.buf, 0, write_std.size);
2237 // write_std.size = 0;
2240 if (0 < write_pout.size)
2242 if (strcmp (argv[1], "ff:ff:ff:ff:ff:ff") == 0) {
2243 fprintf(stderr, "LOG: BROADCAST! Skipping the message\n");
2246 memset (write_pout.buf, 0, write_pout.size);
2247 write_pout.size = 0;
2252 fprintf (stderr, "LOG : has a new message for %s\n", argv[1]);
2253 sendsocket = GNUNET_NETWORK_socket_create (AF_BTH, SOCK_STREAM, BTHPROTO_RFCOMM);
2255 if (sendsocket == NULL)
2257 fprintf (stderr, "Failed to create RFCOMM socket: \n");
2262 memset (&addr, 0, sizeof (addr));
2263 //addr.addressFamily = AF_BTH;
2265 WSAStringToAddress (argv[1], AF_BTH, NULL, (LPSOCKADDR) &addr, &addr_len))
2267 fprintf (stderr, "Failed to translate the address: ");
2271 addr.port = get_channel (argv[1]);
2272 if (addr.port == -1)
2274 fprintf (stderr, "Couldn't find the sdp service for the address: %s\n", argv[1]);
2275 memset (write_pout.buf, 0, write_pout.size);
2276 write_pout.size = 0;
2277 broadcast = 1; //skipping the select part
2281 if (GNUNET_OK != GNUNET_NETWORK_socket_connect (sendsocket, (LPSOCKADDR)&addr, addr_len))
2283 fprintf (stderr, "Failed to connect: ");
2288 if (GNUNET_OK != GNUNET_NETWORK_socket_set_blocking (sendsocket, 1) )
2290 fprintf (stderr, "Failed to change the socket mode\n");
2294 GNUNET_NETWORK_fdset_set (wfds, sendsocket);
2301 int retval = GNUNET_NETWORK_socket_select (rfds, wfds, NULL, GNUNET_TIME_relative_get_forever_());
2304 fprintf (stderr, "Select error\n");
2307 //if (GNUNET_NETWORK_fdset_isset (wfds, (struct GNUNET_NETWORK_Handle*)&stdout_handle))
2308 if (retval == stdout_pos)
2310 fprintf(stderr, "LOG : sends a message to STDOUT\n"); //FIXME: debugging message
2312 //ret = GNUNET_NETWORK_socket_send ((struct GNUNET_NETWORK_Handle *)&stdout_handle, write_std.buf + write_std.pos, write_std.size - write_std.pos);
2313 //ret = write (STDOUT_FILENO, write_std.buf + write_std.pos, write_std.size - write_std.pos);
2315 if (FALSE == WriteFile (stdout_handle, write_std.buf + write_std.pos, write_std.size - write_std.pos, &ret, NULL))
2317 fprintf (stderr, "Failed to write to STDOUT: ");
2324 fprintf (stderr, "Failed to write to STDOUT\n");
2328 write_std.pos += ret;
2329 if (write_std.pos == write_std.size)
2335 if (sendsocket != NULL)
2337 if (GNUNET_NETWORK_fdset_isset (wfds, sendsocket))
2340 ret = GNUNET_NETWORK_socket_send (sendsocket, write_pout.buf + write_pout.pos,
2341 write_pout.size - write_pout.pos);
2343 if (GNUNET_SYSERR == ret)
2345 fprintf (stderr, "Failed to send to the socket. Closing the socket. Error: \n");
2347 if (GNUNET_NETWORK_socket_close (sendsocket) != GNUNET_OK)
2349 fprintf (stderr, "Failed to close the sendsocket!\n");
2356 write_pout.pos += ret;
2357 if ((write_pout.pos != write_pout.size) && (0 != ret))
2359 /* we should not get partial sends with packet-oriented devices... */
2360 fprintf (stderr, "Write error, partial send: %u/%u\n",
2361 (unsigned int) write_pout.pos,
2362 (unsigned int) write_pout.size);
2366 if (write_pout.pos == write_pout.size)
2369 write_pout.size = 0;
2372 fprintf(stderr, "LOG : sends a message to a DEVICE\n"); //FIXME: debugging message
2377 //if (GNUNET_NETWORK_fdset_isset (rfds, (struct GNUNET_NETWORK_Handle*)&stdin_handle))
2378 if (retval == stdin_pos)
2381 //ret = GNUNET_NETWORK_socket_recv ((struct GNUNET_NETWORK_Handle *)&stdin_handle, readbuf, sizeof (write_pout.buf));
2382 //ret = read (STDIN_FILENO, readbuf, sizeof (readbuf));
2384 if (FALSE == ReadFile (stdin_handle, readbuf, sizeof (readbuf), &ret, NULL)) /* do nothing asynchronous */
2386 fprintf (stderr, "Read error from STDIN: ");
2392 /* stop reading... */
2395 mst_receive (stdin_mst, readbuf, ret);
2396 fprintf (stderr, "LOG : receives a message from STDIN\n"); //FIXME: debugging message
2400 if (GNUNET_NETWORK_fdset_isset (rfds, dev.handle))
2402 fprintf (stderr, "LOG: accepting connection\n");
2403 struct GNUNET_NETWORK_Handle *readsocket;
2404 readsocket = GNUNET_NETWORK_socket_accept (dev.handle, (LPSOCKADDR)&acc_addr, &addr_len);
2405 if (readsocket == NULL)
2407 fprintf (stderr, "Accept error %d: ", GetLastError());
2413 if (GNUNET_OK != GNUNET_NETWORK_socket_set_blocking (readsocket, 1) )
2415 fprintf (stderr, "Failed to change the socket mode\n");
2418 GNUNET_NETWORK_fdset_set (rfds, readsocket);
2420 if (crt_rfds < MAX_PORTS)
2421 rfds_list[crt_rfds++] = readsocket;
2424 fprintf (stderr, "The limit for the read file descriptors list was reached\n");
2430 for (i = 0; i < crt_rfds; i++)
2432 if (GNUNET_NETWORK_fdset_isset (rfds, rfds_list[i]))
2434 struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage *rrm;
2436 fprintf (stderr, "LOG: reading something from the socket\n");//FIXME : debugging message
2437 rrm = (struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage *) write_std.buf;
2438 ret = read_from_the_socket (rfds_list[i], (unsigned char *) &rrm->frame,
2439 sizeof (write_std.buf)
2440 - sizeof (struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage)
2441 + sizeof (struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame),
2446 //TODO remove the socket from the list
2447 if (GNUNET_NETWORK_socket_close (rfds_list[i]) != GNUNET_OK)
2449 fprintf (stderr, "Failed to close the sendsocket!\n");
2453 fprintf (stderr, "Read error from raw socket: ");
2458 if ((0 < ret) && (0 == mac_test (&rrm->frame, &dev)))
2460 write_std.size = ret
2461 + sizeof (struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage)
2462 - sizeof (struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame);
2463 rrm->header.size = htons (write_std.size);
2464 rrm->header.type = htons (GNUNET_MESSAGE_TYPE_WLAN_DATA_FROM_HELPER);
2472 mst_destroy (stdin_mst);
2475 if (GNUNET_NETWORK_socket_close (dev.handle) != GNUNET_OK)
2477 fprintf (stderr, "Failed to close the socket!\n");
2481 for (i = 0; i < crt_rfds; i++)
2483 if (GNUNET_NETWORK_socket_close (rfds_list[i]) != GNUNET_OK)
2485 fprintf (stderr, "Failed to close the socket!\n");
2492 return 1; /* we never exit 'normally' */