diff options
Diffstat (limited to 'src/transport/gnunet-helper-transport-wlan-dummy.c')
-rw-r--r-- | src/transport/gnunet-helper-transport-wlan-dummy.c | 520 |
1 files changed, 0 insertions, 520 deletions
diff --git a/src/transport/gnunet-helper-transport-wlan-dummy.c b/src/transport/gnunet-helper-transport-wlan-dummy.c deleted file mode 100644 index ab77f5c68..000000000 --- a/src/transport/gnunet-helper-transport-wlan-dummy.c +++ /dev/null | |||
@@ -1,520 +0,0 @@ | |||
1 | /* | ||
2 | This file is part of GNUnet. | ||
3 | Copyright (C) 2010, 2012 GNUnet e.V. | ||
4 | |||
5 | GNUnet is free software: you can redistribute it and/or modify it | ||
6 | under the terms of the GNU Affero General Public License as published | ||
7 | by the Free Software Foundation, either version 3 of the License, | ||
8 | or (at your option) any later version. | ||
9 | |||
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 | Affero General Public License for more details. | ||
14 | |||
15 | You should have received a copy of the GNU Affero General Public License | ||
16 | along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
17 | |||
18 | SPDX-License-Identifier: AGPL3.0-or-later | ||
19 | */ | ||
20 | /** | ||
21 | * @file transport/gnunet-helper-transport-wlan-dummy.c | ||
22 | * @brief helper for the testcases for plugin_transport_wlan.c | ||
23 | * @author David Brodski | ||
24 | */ | ||
25 | #include "platform.h" | ||
26 | #include "gnunet_protocols.h" | ||
27 | #include "gnunet_util_lib.h" | ||
28 | #include "plugin_transport_wlan.h" | ||
29 | |||
30 | /** | ||
31 | * Name of the fifo to use for IPC with the other dummy process. | ||
32 | */ | ||
33 | #define FIFO_FILE1 "/tmp/test-transport/api-wlan-p1/WLAN_FIFO_in" | ||
34 | |||
35 | /** | ||
36 | * Name of the fifo to use for IPC with the other dummy process. | ||
37 | */ | ||
38 | #define FIFO_FILE2 "/tmp/test-transport/api-wlan-p1/WLAN_FIFO_out" | ||
39 | |||
40 | /** | ||
41 | * Maximum size of a message allowed in either direction | ||
42 | * (used for our receive and sent buffers). | ||
43 | */ | ||
44 | #define MAXLINE 4096 | ||
45 | |||
46 | |||
47 | /** | ||
48 | * IO buffer used for buffering data in transit. | ||
49 | */ | ||
50 | struct SendBuffer | ||
51 | { | ||
52 | /** | ||
53 | * How many bytes that were stored in 'buf' did we already write to the | ||
54 | * destination? Always smaller than 'size'. | ||
55 | */ | ||
56 | size_t pos; | ||
57 | |||
58 | /** | ||
59 | * How many bytes of data are stored in 'buf' for transmission right now? | ||
60 | * Data always starts at offset 0 and extends to 'size'. | ||
61 | */ | ||
62 | size_t size; | ||
63 | |||
64 | /** | ||
65 | * Buffered data; twice the maximum allowed message size as we add some | ||
66 | * headers. | ||
67 | */ | ||
68 | char buf[MAXLINE * 2]; | ||
69 | }; | ||
70 | |||
71 | |||
72 | /** | ||
73 | * Flag set to 1 if we are to terminate, otherwise 0. | ||
74 | */ | ||
75 | static int closeprog; | ||
76 | |||
77 | |||
78 | /** | ||
79 | * We're being killed, clean up. | ||
80 | * | ||
81 | * @param sig killing signal | ||
82 | */ | ||
83 | static void | ||
84 | sigfunc (int sig) | ||
85 | { | ||
86 | closeprog = 1; | ||
87 | (void) unlink (FIFO_FILE1); | ||
88 | (void) unlink (FIFO_FILE2); | ||
89 | } | ||
90 | |||
91 | |||
92 | /** | ||
93 | * Create control message for plugin | ||
94 | * | ||
95 | * @param buffer pointer to buffer for the message | ||
96 | * @param mac pointer to the mac address | ||
97 | * @return number of bytes written | ||
98 | */ | ||
99 | static int | ||
100 | send_mac_to_plugin (char *buffer, struct GNUNET_TRANSPORT_WLAN_MacAddress *mac) | ||
101 | { | ||
102 | struct GNUNET_TRANSPORT_WLAN_HelperControlMessage macmsg; | ||
103 | |||
104 | GNUNET_memcpy (&macmsg.mac, | ||
105 | (char *) mac, | ||
106 | sizeof(struct GNUNET_TRANSPORT_WLAN_MacAddress)); | ||
107 | macmsg.hdr.size = | ||
108 | htons (sizeof(struct GNUNET_TRANSPORT_WLAN_HelperControlMessage)); | ||
109 | macmsg.hdr.type = htons (GNUNET_MESSAGE_TYPE_WLAN_HELPER_CONTROL); | ||
110 | GNUNET_memcpy (buffer, | ||
111 | &macmsg, | ||
112 | sizeof(struct GNUNET_TRANSPORT_WLAN_HelperControlMessage)); | ||
113 | return sizeof(struct GNUNET_TRANSPORT_WLAN_HelperControlMessage); | ||
114 | } | ||
115 | |||
116 | |||
117 | /** | ||
118 | * We got a message from the FIFO, check it, convert the message | ||
119 | * type to the output forward and copy it to the buffer for stdout. | ||
120 | * | ||
121 | * @param cls the 'struct SendBuffer' to copy the converted message to | ||
122 | * @param hdr inbound message from the FIFO | ||
123 | * @return #GNUNET_OK on success, | ||
124 | * #GNUNET_NO to stop further processing (no error) | ||
125 | * #GNUNET_SYSERR to stop further processing with error | ||
126 | */ | ||
127 | static int | ||
128 | stdin_send (void *cls, const struct GNUNET_MessageHeader *hdr) | ||
129 | { | ||
130 | struct SendBuffer *write_pout = cls; | ||
131 | const struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage *in; | ||
132 | size_t payload_size; | ||
133 | struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage newheader; | ||
134 | uint16_t sendsize; | ||
135 | |||
136 | sendsize = ntohs (hdr->size); | ||
137 | in = (const struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage *) hdr; | ||
138 | if ((GNUNET_MESSAGE_TYPE_WLAN_DATA_TO_HELPER != ntohs (hdr->type)) || | ||
139 | (sizeof(struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage) > sendsize)) | ||
140 | { | ||
141 | fprintf (stderr, "%s", "Received malformed message\n"); | ||
142 | exit (1); | ||
143 | } | ||
144 | payload_size = | ||
145 | sendsize - sizeof(struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage); | ||
146 | if ((payload_size | ||
147 | + sizeof(struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage) | ||
148 | + write_pout->size) > MAXLINE * 2) | ||
149 | { | ||
150 | fprintf (stderr, "%s", "Packet too big for buffer\n"); | ||
151 | exit (1); | ||
152 | } | ||
153 | memset (&newheader, 0, sizeof(newheader)); | ||
154 | newheader.header.size = htons (payload_size + sizeof(newheader)); | ||
155 | newheader.header.type = htons (GNUNET_MESSAGE_TYPE_WLAN_DATA_FROM_HELPER); | ||
156 | newheader.frame = in->frame; | ||
157 | GNUNET_memcpy (write_pout->buf + write_pout->size, | ||
158 | &newheader, | ||
159 | sizeof(newheader)); | ||
160 | write_pout->size += sizeof(newheader); | ||
161 | GNUNET_memcpy (write_pout->buf + write_pout->size, &in[1], payload_size); | ||
162 | write_pout->size += payload_size; | ||
163 | return GNUNET_OK; | ||
164 | } | ||
165 | |||
166 | |||
167 | /** | ||
168 | * We read a full message from stdin. Copy it to our send buffer. | ||
169 | * | ||
170 | * @param cls the 'struct SendBuffer' to copy to | ||
171 | * @param hdr the message we received to copy to the buffer | ||
172 | * @return #GNUNET_OK on success, | ||
173 | * #GNUNET_NO to stop further processing (no error) | ||
174 | * #GNUNET_SYSERR to stop further processing with error | ||
175 | */ | ||
176 | static int | ||
177 | file_in_send (void *cls, const struct GNUNET_MessageHeader *hdr) | ||
178 | { | ||
179 | struct SendBuffer *write_std = cls; | ||
180 | uint16_t sendsize; | ||
181 | |||
182 | sendsize = ntohs (hdr->size); | ||
183 | if ((sendsize + write_std->size) > MAXLINE * 2) | ||
184 | { | ||
185 | fprintf (stderr, "%s", "Packet too big for buffer\n"); | ||
186 | exit (1); | ||
187 | } | ||
188 | GNUNET_memcpy (write_std->buf + write_std->size, hdr, sendsize); | ||
189 | write_std->size += sendsize; | ||
190 | return GNUNET_OK; | ||
191 | } | ||
192 | |||
193 | |||
194 | /** | ||
195 | * Main function of a program that pretends to be a WLAN card. | ||
196 | * | ||
197 | * @param argc should be 2 | ||
198 | * @param argv either '1' or '2', depending on which of the two cards this dummy is to emulate | ||
199 | * @return 1 on error, 0 if terminated normally via signal | ||
200 | */ | ||
201 | int | ||
202 | main (int argc, char *argv[]) | ||
203 | { | ||
204 | struct stat st; | ||
205 | int erg; | ||
206 | FILE *fpin = NULL; | ||
207 | FILE *fpout = NULL; | ||
208 | int fdpin; | ||
209 | int fdpout; | ||
210 | char readbuf[MAXLINE]; | ||
211 | int readsize; | ||
212 | struct SendBuffer write_std; | ||
213 | struct SendBuffer write_pout; | ||
214 | int ret; | ||
215 | int maxfd; | ||
216 | fd_set rfds; | ||
217 | fd_set wfds; | ||
218 | struct timeval tv; | ||
219 | int retval; | ||
220 | struct GNUNET_MessageStreamTokenizer *stdin_mst = NULL; | ||
221 | struct GNUNET_MessageStreamTokenizer *file_in_mst = NULL; | ||
222 | struct GNUNET_TRANSPORT_WLAN_MacAddress macaddr; | ||
223 | int first; | ||
224 | |||
225 | if ((2 != argc) || | ||
226 | ((0 != strcmp (argv[1], "1")) && (0 != strcmp (argv[1], "2")))) | ||
227 | { | ||
228 | fprintf ( | ||
229 | stderr, | ||
230 | "%s", | ||
231 | "This program must be started with the operating mode (1 or 2) as the only argument.\n"); | ||
232 | return 1; | ||
233 | } | ||
234 | |||
235 | /* make the fifos if needed */ | ||
236 | umask (0); | ||
237 | if ((GNUNET_OK != GNUNET_DISK_directory_create_for_file (FIFO_FILE1)) || | ||
238 | (GNUNET_OK != GNUNET_DISK_directory_create_for_file (FIFO_FILE2))) | ||
239 | { | ||
240 | fprintf (stderr, "Failed to create directory for file `%s'\n", FIFO_FILE1); | ||
241 | return 1; | ||
242 | } | ||
243 | if (0 == strcmp (argv[1], "1")) | ||
244 | { | ||
245 | if (0 != stat (FIFO_FILE1, &st)) | ||
246 | { | ||
247 | erg = mkfifo (FIFO_FILE1, 0666); | ||
248 | if ((0 != erg) && (EEXIST != errno)) | ||
249 | fprintf (stderr, | ||
250 | "Error in mkfifo(%s): %s\n", | ||
251 | FIFO_FILE1, | ||
252 | strerror (errno)); | ||
253 | } | ||
254 | } | ||
255 | else | ||
256 | { | ||
257 | if (0 != stat (FIFO_FILE2, &st)) | ||
258 | { | ||
259 | GNUNET_break (0 == (erg = mkfifo (FIFO_FILE2, 0666))); | ||
260 | if ((0 != erg) && (EEXIST != errno)) | ||
261 | fprintf (stderr, | ||
262 | "Error in mkfifo(%s): %s\n", | ||
263 | FIFO_FILE2, | ||
264 | strerror (errno)); | ||
265 | } | ||
266 | } | ||
267 | |||
268 | if (0 == strcmp (argv[1], "1")) | ||
269 | { | ||
270 | first = 1; | ||
271 | fpin = fopen (FIFO_FILE1, "r"); | ||
272 | if (NULL == fpin) | ||
273 | { | ||
274 | fprintf (stderr, | ||
275 | "fopen of read FIFO_FILE1 failed: %s\n", | ||
276 | strerror (errno)); | ||
277 | goto end; | ||
278 | } | ||
279 | if (NULL == (fpout = fopen (FIFO_FILE2, "w"))) | ||
280 | { | ||
281 | GNUNET_break (0 == mkfifo (FIFO_FILE2, 0666)); | ||
282 | fpout = fopen (FIFO_FILE2, "w"); | ||
283 | } | ||
284 | if (NULL == fpout) | ||
285 | { | ||
286 | fprintf (stderr, | ||
287 | "fopen of write FIFO_FILE2 failed: %s\n", | ||
288 | strerror (errno)); | ||
289 | goto end; | ||
290 | } | ||
291 | } | ||
292 | else | ||
293 | { | ||
294 | first = 0; | ||
295 | if (NULL == (fpout = fopen (FIFO_FILE1, "w"))) | ||
296 | { | ||
297 | GNUNET_break (0 == mkfifo (FIFO_FILE1, 0666)); | ||
298 | fpout = fopen (FIFO_FILE1, "w"); | ||
299 | } | ||
300 | if (NULL == fpout) | ||
301 | { | ||
302 | fprintf (stderr, | ||
303 | "fopen of write FIFO_FILE1 failed: %s\n", | ||
304 | strerror (errno)); | ||
305 | goto end; | ||
306 | } | ||
307 | fpin = fopen (FIFO_FILE2, "r"); | ||
308 | if (NULL == fpin) | ||
309 | { | ||
310 | fprintf (stderr, | ||
311 | "fopen of read FIFO_FILE2 failed: %s\n", | ||
312 | strerror (errno)); | ||
313 | goto end; | ||
314 | } | ||
315 | } | ||
316 | |||
317 | fdpin = fileno (fpin); | ||
318 | GNUNET_assert (fpin >= 0); | ||
319 | if (fdpin >= FD_SETSIZE) | ||
320 | { | ||
321 | fprintf (stderr, | ||
322 | "File fdpin number too large (%d > %u)\n", | ||
323 | fdpin, | ||
324 | (unsigned int) FD_SETSIZE); | ||
325 | goto end; | ||
326 | } | ||
327 | |||
328 | fdpout = fileno (fpout); | ||
329 | GNUNET_assert (fdpout >= 0); | ||
330 | |||
331 | if (fdpout >= FD_SETSIZE) | ||
332 | { | ||
333 | fprintf (stderr, | ||
334 | "File fdpout number too large (%d > %u)\n", | ||
335 | fdpout, | ||
336 | (unsigned int) FD_SETSIZE); | ||
337 | goto end; | ||
338 | } | ||
339 | |||
340 | signal (SIGINT, &sigfunc); | ||
341 | signal (SIGTERM, &sigfunc); | ||
342 | signal (GNUNET_TERM_SIG, &sigfunc); | ||
343 | |||
344 | write_std.size = 0; | ||
345 | write_std.pos = 0; | ||
346 | write_pout.size = 0; | ||
347 | write_pout.pos = 0; | ||
348 | stdin_mst = GNUNET_MST_create (&stdin_send, &write_pout); | ||
349 | file_in_mst = GNUNET_MST_create (&file_in_send, &write_std); | ||
350 | |||
351 | /* Send 'random' mac address */ | ||
352 | macaddr.mac[0] = 0x13; | ||
353 | macaddr.mac[1] = 0x22; | ||
354 | macaddr.mac[2] = 0x33; | ||
355 | macaddr.mac[3] = 0x44; | ||
356 | macaddr.mac[4] = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_STRONG, 256); | ||
357 | macaddr.mac[5] = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_NONCE, 256); | ||
358 | write_std.size = send_mac_to_plugin (write_std.buf, &macaddr); | ||
359 | |||
360 | while (0 == closeprog) | ||
361 | { | ||
362 | maxfd = -1; | ||
363 | tv.tv_sec = 5; | ||
364 | tv.tv_usec = 0; | ||
365 | |||
366 | FD_ZERO (&rfds); | ||
367 | FD_ZERO (&wfds); | ||
368 | /* if output queue is empty, read */ | ||
369 | if (0 == write_pout.size) | ||
370 | { | ||
371 | FD_SET (STDIN_FILENO, &rfds); | ||
372 | maxfd = MAX (STDIN_FILENO, maxfd); | ||
373 | } | ||
374 | if (0 == write_std.size) | ||
375 | { | ||
376 | FD_SET (fdpin, &rfds); | ||
377 | maxfd = MAX (fdpin, maxfd); | ||
378 | } | ||
379 | |||
380 | /* if there is something to write, try to write */ | ||
381 | if (0 < write_std.size) | ||
382 | { | ||
383 | FD_SET (STDOUT_FILENO, &wfds); | ||
384 | maxfd = MAX (maxfd, STDOUT_FILENO); | ||
385 | } | ||
386 | if (0 < write_pout.size) | ||
387 | { | ||
388 | FD_SET (fdpout, &wfds); | ||
389 | maxfd = MAX (maxfd, fdpout); | ||
390 | } | ||
391 | |||
392 | retval = select (maxfd + 1, &rfds, &wfds, NULL, &tv); | ||
393 | if ((-1 == retval) && (EINTR == errno)) | ||
394 | continue; | ||
395 | if (0 > retval) | ||
396 | { | ||
397 | fprintf (stderr, "select failed: %s\n", strerror (errno)); | ||
398 | closeprog = 1; | ||
399 | break; | ||
400 | } | ||
401 | |||
402 | if (FD_ISSET (STDOUT_FILENO, &wfds)) | ||
403 | { | ||
404 | ret = write (STDOUT_FILENO, | ||
405 | write_std.buf + write_std.pos, | ||
406 | write_std.size - write_std.pos); | ||
407 | if (0 > ret) | ||
408 | { | ||
409 | closeprog = 1; | ||
410 | fprintf (stderr, | ||
411 | "Write ERROR to STDOUT_FILENO: %s\n", | ||
412 | strerror (errno)); | ||
413 | break; | ||
414 | } | ||
415 | else | ||
416 | { | ||
417 | write_std.pos += ret; | ||
418 | /* check if finished writing */ | ||
419 | if (write_std.pos == write_std.size) | ||
420 | { | ||
421 | write_std.pos = 0; | ||
422 | write_std.size = 0; | ||
423 | } | ||
424 | } | ||
425 | } | ||
426 | |||
427 | if (FD_ISSET (fdpout, &wfds)) | ||
428 | { | ||
429 | ret = write (fdpout, | ||
430 | write_pout.buf + write_pout.pos, | ||
431 | write_pout.size - write_pout.pos); | ||
432 | |||
433 | if (0 > ret) | ||
434 | { | ||
435 | closeprog = 1; | ||
436 | fprintf (stderr, | ||
437 | "Write ERROR to fdpout failed: %s\n", | ||
438 | strerror (errno)); | ||
439 | } | ||
440 | else | ||
441 | { | ||
442 | write_pout.pos += ret; | ||
443 | /* check if finished writing */ | ||
444 | if (write_pout.pos == write_pout.size) | ||
445 | { | ||
446 | write_pout.pos = 0; | ||
447 | write_pout.size = 0; | ||
448 | } | ||
449 | } | ||
450 | } | ||
451 | |||
452 | if (FD_ISSET (STDIN_FILENO, &rfds)) | ||
453 | { | ||
454 | readsize = read (STDIN_FILENO, readbuf, sizeof(readbuf)); | ||
455 | |||
456 | if (0 > readsize) | ||
457 | { | ||
458 | closeprog = 1; | ||
459 | fprintf (stderr, | ||
460 | "Error reading from STDIN_FILENO: %s\n", | ||
461 | strerror (errno)); | ||
462 | } | ||
463 | else if (0 < readsize) | ||
464 | { | ||
465 | GNUNET_MST_from_buffer (stdin_mst, | ||
466 | readbuf, | ||
467 | readsize, | ||
468 | GNUNET_NO, | ||
469 | GNUNET_NO); | ||
470 | } | ||
471 | else | ||
472 | { | ||
473 | /* eof */ | ||
474 | closeprog = 1; | ||
475 | } | ||
476 | } | ||
477 | |||
478 | if (FD_ISSET (fdpin, &rfds)) | ||
479 | { | ||
480 | readsize = read (fdpin, readbuf, sizeof(readbuf)); | ||
481 | if (0 > readsize) | ||
482 | { | ||
483 | closeprog = 1; | ||
484 | fprintf (stderr, "Error reading from fdpin: %s\n", strerror (errno)); | ||
485 | break; | ||
486 | } | ||
487 | else if (0 < readsize) | ||
488 | { | ||
489 | GNUNET_MST_from_buffer (file_in_mst, | ||
490 | readbuf, | ||
491 | readsize, | ||
492 | GNUNET_NO, | ||
493 | GNUNET_NO); | ||
494 | } | ||
495 | else | ||
496 | { | ||
497 | /* eof */ | ||
498 | closeprog = 1; | ||
499 | } | ||
500 | } | ||
501 | } | ||
502 | |||
503 | end: | ||
504 | /* clean up */ | ||
505 | if (NULL != stdin_mst) | ||
506 | GNUNET_MST_destroy (stdin_mst); | ||
507 | if (NULL != file_in_mst) | ||
508 | GNUNET_MST_destroy (file_in_mst); | ||
509 | |||
510 | if (NULL != fpout) | ||
511 | fclose (fpout); | ||
512 | if (NULL != fpin) | ||
513 | fclose (fpin); | ||
514 | if (1 == first) | ||
515 | { | ||
516 | (void) unlink (FIFO_FILE1); | ||
517 | (void) unlink (FIFO_FILE2); | ||
518 | } | ||
519 | return 0; | ||
520 | } | ||