2 This file is part of GNUnet.
3 (C) 2010 Christian Grothoff (and other contributing authors)
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 3, or (at your
8 option) any later version.
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
21 * @file transport/gnunet-helper-transport-wlan-dummy.c
22 * @brief helper for the testcases for plugin_transport_wlan.c
23 * @author David Brodski
26 #include "gnunet_protocols.h"
27 #include "gnunet_util_lib.h"
28 #include "plugin_transport_wlan.h"
30 #define FIFO_FILE1 "/tmp/test-transport/api-wlan-p1/WLAN_FIFO_in"
31 #define FIFO_FILE2 "/tmp/test-transport/api-wlan-p1/WLAN_FIFO_out"
39 char buf[MAXLINE * 2];
50 (void) unlink (FIFO_FILE1);
51 (void) unlink (FIFO_FILE2);
56 * function to create GNUNET_MESSAGE_TYPE_WLAN_HELPER_CONTROL message for plugin
57 * @param buffer pointer to buffer for the message
58 * @param mac pointer to the mac address
59 * @return number of bytes written
62 send_mac_to_plugin (char *buffer, struct MacAddress *mac)
65 struct GNUNET_TRANSPORT_WLAN_HelperControlMessage macmsg;
67 memcpy (&macmsg.mac, (char *) mac, sizeof (struct MacAddress));
68 macmsg.hdr.size = htons (sizeof (struct GNUNET_TRANSPORT_WLAN_HelperControlMessage));
69 macmsg.hdr.type = htons (GNUNET_MESSAGE_TYPE_WLAN_HELPER_CONTROL);
71 memcpy (buffer, &macmsg, sizeof (struct GNUNET_TRANSPORT_WLAN_HelperControlMessage));
72 return sizeof (struct GNUNET_TRANSPORT_WLAN_HelperControlMessage);
76 stdin_send (void *cls, void *client, const struct GNUNET_MessageHeader *hdr)
78 struct sendbuf *write_pout = cls;
80 struct GNUNET_MessageHeader newheader;
86 ntohs (hdr->size) - sizeof (struct Radiotap_Send) +
87 sizeof (struct Radiotap_rx);
89 if (GNUNET_MESSAGE_TYPE_WLAN_HELPER_DATA != ntohs (hdr->type))
91 fprintf (stderr, "Function stdin_send: wrong packet type\n");
94 if ((sendsize + write_pout->size) > MAXLINE * 2)
96 fprintf (stderr, "Function stdin_send: Packet too big for buffer\n");
100 newheader.size = htons (sendsize);
101 newheader.type = htons (GNUNET_MESSAGE_TYPE_WLAN_HELPER_DATA);
103 to_start = write_pout->buf + write_pout->size;
104 memcpy (to_start, &newheader, sizeof (struct GNUNET_MessageHeader));
105 write_pout->size += sizeof (struct GNUNET_MessageHeader);
107 to_radiotap = to_start + sizeof (struct GNUNET_MessageHeader);
108 memset (to_radiotap, 0, sizeof (struct Radiotap_rx));
109 write_pout->size += sizeof (struct Radiotap_rx);
111 to_data = to_radiotap + sizeof (struct Radiotap_rx);
113 ((char *) hdr) + sizeof (struct Radiotap_Send) +
114 sizeof (struct GNUNET_MessageHeader),
115 ntohs (hdr->size) - sizeof (struct Radiotap_Send) -
116 sizeof (struct GNUNET_MessageHeader));
118 ntohs (hdr->size) - sizeof (struct Radiotap_Send) -
119 sizeof (struct GNUNET_MessageHeader);
124 file_in_send (void *cls, void *client, const struct GNUNET_MessageHeader *hdr)
126 struct sendbuf *write_std = cls;
129 sendsize = ntohs (hdr->size);
131 if (GNUNET_MESSAGE_TYPE_WLAN_HELPER_DATA != ntohs (hdr->type))
133 fprintf (stderr, "Function file_in_send: wrong packet type\n");
136 if ((sendsize + write_std->size) > MAXLINE * 2)
138 fprintf (stderr, "Function file_in_send: Packet too big for buffer\n");
142 memcpy (write_std->buf + write_std->size, hdr, sendsize);
143 write_std->size += sendsize;
148 main (int argc, char *argv[])
156 char readbuf[MAXLINE];
158 struct sendbuf write_std;
159 struct sendbuf write_pout;
166 struct GNUNET_SERVER_MessageStreamTokenizer *stdin_mst;
167 struct GNUNET_SERVER_MessageStreamTokenizer *file_in_mst;
168 struct MacAddress macaddr;
173 "This program must be started with the operating mode (1 or 2) as the only argument.\n");
176 if ((0 != strstr (argv[1], "1")) && (0 != strstr (argv[1], "2")))
179 //make the fifos if needed
180 if (0 != stat (FIFO_FILE1, &st))
182 if (0 == stat (FIFO_FILE2, &st))
184 fprintf (stderr, "FIFO_FILE2 exists, but FIFO_FILE1 not\n");
188 erg = mkfifo (FIFO_FILE1, 0666);
191 fprintf (stderr, "Error in mkfifo(%s): %s\n", FIFO_FILE1,
195 erg = mkfifo (FIFO_FILE2, 0666);
198 fprintf (stderr, "Error in mkfifo(%s): %s\n", FIFO_FILE2,
206 if (0 != stat (FIFO_FILE2, &st))
208 fprintf (stderr, "FIFO_FILE1 exists, but FIFO_FILE2 not\n");
213 if (strstr (argv[1], "1"))
215 //fprintf(stderr, "First\n");
217 fpin = fopen (FIFO_FILE1, "r");
220 fprintf (stderr, "fopen of read FIFO_FILE1\n");
223 fpout = fopen (FIFO_FILE2, "w");
226 fprintf (stderr, "fopen of write FIFO_FILE2\n");
234 //fprintf(stderr, "Second\n");
235 fpout = fopen (FIFO_FILE1, "w");
238 fprintf (stderr, "fopen of write FIFO_FILE1\n");
241 fpin = fopen (FIFO_FILE2, "r");
244 fprintf (stderr, "fopen of read FIFO_FILE2\n");
250 fdpin = fileno (fpin);
251 GNUNET_assert (fpin >= 0);
253 if (fdpin >= FD_SETSIZE)
255 fprintf (stderr, "File fdpin number too large (%d > %u)\n", fdpin,
256 (unsigned int) FD_SETSIZE);
260 fdpout = fileno (fpout);
261 GNUNET_assert (fdpout >= 0);
263 if (fdpout >= FD_SETSIZE)
265 fprintf (stderr, "File fdpout number too large (%d > %u)\n", fdpout,
266 (unsigned int) FD_SETSIZE);
271 signal (SIGINT, &sigfunc);
272 signal (SIGTERM, &sigfunc);
278 stdin_mst = GNUNET_SERVER_mst_create (&stdin_send, &write_pout);
279 file_in_mst = GNUNET_SERVER_mst_create (&file_in_send, &write_std);
281 //Send random mac address
282 macaddr.mac[0] = 0x13;
283 macaddr.mac[1] = 0x22;
284 macaddr.mac[2] = 0x33;
285 macaddr.mac[3] = 0x44;
286 macaddr.mac[4] = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_STRONG, 256);
287 macaddr.mac[5] = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_NONCE, 256);
288 write_std.size = send_mac_to_plugin (write_std.buf, &macaddr);
290 while (0 == closeprog)
298 // if output queue is empty
299 if (0 == write_pout.size)
301 FD_SET (STDIN_FILENO, &rfds);
302 maxfd = MAX (STDIN_FILENO, maxfd);
304 if (0 == write_std.size)
306 FD_SET (fdpin, &rfds);
307 maxfd = MAX (fdpin, maxfd);
310 // if there is something to write
311 if (0 < write_std.size)
313 FD_SET (STDOUT_FILENO, &wfds);
314 maxfd = MAX (maxfd, STDOUT_FILENO);
316 if (0 < write_pout.size)
318 FD_SET (fdpout, &wfds);
319 maxfd = MAX (maxfd, fdpout);
322 retval = select (maxfd + 1, &rfds, &wfds, NULL, &tv);
323 if ((-1 == retval) && (EINTR == errno))
327 fprintf (stderr, "select failed: %s\n", strerror (errno));
332 if (FD_ISSET (STDOUT_FILENO, &wfds))
335 write (STDOUT_FILENO, write_std.buf + write_std.pos,
336 write_std.size - write_std.pos);
340 fprintf (stderr, "Write ERROR to STDOUT_FILENO: %s\n",
346 write_std.pos += ret;
348 if (write_std.pos == write_std.size)
356 if (FD_ISSET (fdpout, &wfds))
359 write (fdpout, write_pout.buf + write_pout.pos,
360 write_pout.size - write_pout.pos);
365 fprintf (stderr, "Write ERROR to fdpout: %s\n", strerror (errno));
369 write_pout.pos += ret;
371 if (write_pout.pos == write_pout.size)
379 if (FD_ISSET (STDIN_FILENO, &rfds))
381 readsize = read (STDIN_FILENO, readbuf, sizeof (readbuf));
386 fprintf (stderr, "Error reading from STDIN_FILENO: %s\n",
389 else if (0 < readsize)
391 GNUNET_SERVER_mst_receive (stdin_mst, NULL, readbuf, readsize,
392 GNUNET_NO, GNUNET_NO);
402 if (FD_ISSET (fdpin, &rfds))
404 readsize = read (fdpin, readbuf, sizeof (readbuf));
408 fprintf (stderr, "Error reading from fdpin: %s\n", strerror (errno));
411 else if (0 < readsize)
413 GNUNET_SERVER_mst_receive (file_in_mst, NULL, readbuf, readsize,
414 GNUNET_NO, GNUNET_NO);
425 GNUNET_SERVER_mst_destroy (stdin_mst);
426 GNUNET_SERVER_mst_destroy (file_in_mst);
435 (void) unlink (FIFO_FILE1);
436 (void) unlink (FIFO_FILE2);