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 GNUNET_TRANSPORT_WLAN_MacAddress *mac)
65 struct GNUNET_TRANSPORT_WLAN_HelperControlMessage macmsg;
67 memcpy (&macmsg.mac, (char *) mac, sizeof (struct GNUNET_TRANSPORT_WLAN_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);
77 stdin_send (void *cls, void *client, const struct GNUNET_MessageHeader *hdr)
79 struct sendbuf *write_pout = cls;
80 const struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage *in;
82 struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage newheader;
84 in = (const struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage *) hdr;
85 if ( (GNUNET_MESSAGE_TYPE_WLAN_DATA_TO_HELPER != ntohs (hdr->type)) ||
86 (sizeof (struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage) < ntohs (hdr->size)) )
88 fprintf (stderr, "Function stdin_send: wrong packet type or size\n");
91 payload_size = ntohs (hdr->size) - sizeof (struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage);
92 if ((payload_size + sizeof (struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage) + write_pout->size) > MAXLINE * 2)
94 fprintf (stderr, "Function stdin_send: Packet too big for buffer\n");
97 memset (&newheader, 0, sizeof (newheader));
98 newheader.header.size = htons (payload_size + sizeof (newheader));
99 newheader.header.type = htons (GNUNET_MESSAGE_TYPE_WLAN_DATA_FROM_HELPER);
100 newheader.frame = in->frame;
101 memcpy (write_pout->buf + write_pout->size,
104 write_pout->size += sizeof (newheader);
105 memcpy (write_pout->buf + write_pout->size,
108 write_pout->size += payload_size;
113 file_in_send (void *cls, void *client, const struct GNUNET_MessageHeader *hdr)
115 struct sendbuf *write_std = cls;
118 sendsize = ntohs (hdr->size);
119 if ((sendsize + write_std->size) > MAXLINE * 2)
121 fprintf (stderr, "Function file_in_send: Packet too big for buffer\n");
125 memcpy (write_std->buf + write_std->size, hdr, sendsize);
126 write_std->size += sendsize;
131 main (int argc, char *argv[])
139 char readbuf[MAXLINE];
141 struct sendbuf write_std;
142 struct sendbuf write_pout;
149 struct GNUNET_SERVER_MessageStreamTokenizer *stdin_mst;
150 struct GNUNET_SERVER_MessageStreamTokenizer *file_in_mst;
151 struct GNUNET_TRANSPORT_WLAN_MacAddress macaddr;
156 "This program must be started with the operating mode (1 or 2) as the only argument.\n");
159 if ((0 != strstr (argv[1], "1")) && (0 != strstr (argv[1], "2")))
162 //make the fifos if needed
163 if (0 != stat (FIFO_FILE1, &st))
165 if (0 == stat (FIFO_FILE2, &st))
167 fprintf (stderr, "FIFO_FILE2 exists, but FIFO_FILE1 not\n");
171 erg = mkfifo (FIFO_FILE1, 0666);
174 fprintf (stderr, "Error in mkfifo(%s): %s\n", FIFO_FILE1,
178 erg = mkfifo (FIFO_FILE2, 0666);
181 fprintf (stderr, "Error in mkfifo(%s): %s\n", FIFO_FILE2,
189 if (0 != stat (FIFO_FILE2, &st))
191 fprintf (stderr, "FIFO_FILE1 exists, but FIFO_FILE2 not\n");
196 if (strstr (argv[1], "1"))
198 //fprintf(stderr, "First\n");
200 fpin = fopen (FIFO_FILE1, "r");
203 fprintf (stderr, "fopen of read FIFO_FILE1\n");
206 fpout = fopen (FIFO_FILE2, "w");
209 fprintf (stderr, "fopen of write FIFO_FILE2\n");
217 //fprintf(stderr, "Second\n");
218 fpout = fopen (FIFO_FILE1, "w");
221 fprintf (stderr, "fopen of write FIFO_FILE1\n");
224 fpin = fopen (FIFO_FILE2, "r");
227 fprintf (stderr, "fopen of read FIFO_FILE2\n");
233 fdpin = fileno (fpin);
234 GNUNET_assert (fpin >= 0);
236 if (fdpin >= FD_SETSIZE)
238 fprintf (stderr, "File fdpin number too large (%d > %u)\n", fdpin,
239 (unsigned int) FD_SETSIZE);
243 fdpout = fileno (fpout);
244 GNUNET_assert (fdpout >= 0);
246 if (fdpout >= FD_SETSIZE)
248 fprintf (stderr, "File fdpout number too large (%d > %u)\n", fdpout,
249 (unsigned int) FD_SETSIZE);
254 signal (SIGINT, &sigfunc);
255 signal (SIGTERM, &sigfunc);
261 stdin_mst = GNUNET_SERVER_mst_create (&stdin_send, &write_pout);
262 file_in_mst = GNUNET_SERVER_mst_create (&file_in_send, &write_std);
264 //Send random mac address
265 macaddr.mac[0] = 0x13;
266 macaddr.mac[1] = 0x22;
267 macaddr.mac[2] = 0x33;
268 macaddr.mac[3] = 0x44;
269 macaddr.mac[4] = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_STRONG, 256);
270 macaddr.mac[5] = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_NONCE, 256);
271 write_std.size = send_mac_to_plugin (write_std.buf, &macaddr);
273 while (0 == closeprog)
281 // if output queue is empty
282 if (0 == write_pout.size)
284 FD_SET (STDIN_FILENO, &rfds);
285 maxfd = MAX (STDIN_FILENO, maxfd);
287 if (0 == write_std.size)
289 FD_SET (fdpin, &rfds);
290 maxfd = MAX (fdpin, maxfd);
293 // if there is something to write
294 if (0 < write_std.size)
296 FD_SET (STDOUT_FILENO, &wfds);
297 maxfd = MAX (maxfd, STDOUT_FILENO);
299 if (0 < write_pout.size)
301 FD_SET (fdpout, &wfds);
302 maxfd = MAX (maxfd, fdpout);
305 retval = select (maxfd + 1, &rfds, &wfds, NULL, &tv);
306 if ((-1 == retval) && (EINTR == errno))
310 fprintf (stderr, "select failed: %s\n", strerror (errno));
315 if (FD_ISSET (STDOUT_FILENO, &wfds))
318 write (STDOUT_FILENO, write_std.buf + write_std.pos,
319 write_std.size - write_std.pos);
323 fprintf (stderr, "Write ERROR to STDOUT_FILENO: %s\n",
329 write_std.pos += ret;
331 if (write_std.pos == write_std.size)
339 if (FD_ISSET (fdpout, &wfds))
342 write (fdpout, write_pout.buf + write_pout.pos,
343 write_pout.size - write_pout.pos);
348 fprintf (stderr, "Write ERROR to fdpout: %s\n", strerror (errno));
352 write_pout.pos += ret;
354 if (write_pout.pos == write_pout.size)
362 if (FD_ISSET (STDIN_FILENO, &rfds))
364 readsize = read (STDIN_FILENO, readbuf, sizeof (readbuf));
369 fprintf (stderr, "Error reading from STDIN_FILENO: %s\n",
372 else if (0 < readsize)
374 GNUNET_SERVER_mst_receive (stdin_mst, NULL, readbuf, readsize,
375 GNUNET_NO, GNUNET_NO);
385 if (FD_ISSET (fdpin, &rfds))
387 readsize = read (fdpin, readbuf, sizeof (readbuf));
391 fprintf (stderr, "Error reading from fdpin: %s\n", strerror (errno));
394 else if (0 < readsize)
396 GNUNET_SERVER_mst_receive (file_in_mst, NULL, readbuf, readsize,
397 GNUNET_NO, GNUNET_NO);
408 GNUNET_SERVER_mst_destroy (stdin_mst);
409 GNUNET_SERVER_mst_destroy (file_in_mst);
418 (void) unlink (FIFO_FILE1);
419 (void) unlink (FIFO_FILE2);