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1 | /* HM-CFG-LAN emulation for HM-CFG-USB | |
2 | * | |
3 | * Copyright (c) 2013 Michael Gernoth <michael@gernoth.net> | |
4 | * | |
5 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
6 | * of this software and associated documentation files (the "Software"), to | |
7 | * deal in the Software without restriction, including without limitation the | |
8 | * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or | |
9 | * sell copies of the Software, and to permit persons to whom the Software is | |
10 | * furnished to do so, subject to the following conditions: | |
11 | * | |
12 | * The above copyright notice and this permission notice shall be included in | |
13 | * all copies or substantial portions of the Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
18 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS | |
21 | * IN THE SOFTWARE. | |
22 | */ | |
23 | ||
24 | #include <stdio.h> | |
25 | #include <stdlib.h> | |
26 | #include <unistd.h> | |
27 | #include <stdint.h> | |
28 | #include <string.h> | |
29 | #include <strings.h> | |
30 | #include <poll.h> | |
31 | #include <signal.h> | |
32 | #include <errno.h> | |
33 | #include <sys/types.h> | |
34 | #include <sys/socket.h> | |
35 | #include <sys/stat.h> | |
36 | #include <netinet/in.h> | |
37 | #include <arpa/inet.h> | |
38 | #include <libusb-1.0/libusb.h> | |
39 | ||
40 | #include "hexdump.h" | |
41 | #include "hmcfgusb.h" | |
42 | ||
43 | #define PID_FILE "/var/run/hmland.pid" | |
44 | ||
45 | extern char *optarg; | |
46 | ||
47 | static int impersonate_hmlanif = 0; | |
48 | static int debug = 0; | |
49 | static int verbose = 0; | |
50 | ||
51 | #define FLAG_LENGTH_BYTE (1<<0) | |
52 | #define FLAG_FORMAT_HEX (1<<1) | |
53 | #define FLAG_COMMA_BEFORE (1<<2) | |
54 | #define FLAG_COMMA_AFTER (1<<3) | |
55 | #define FLAG_NL (1<<4) | |
56 | #define FLAG_IGNORE_COMMAS (1<<5) | |
57 | ||
58 | #define CHECK_SPACE(x) if ((*outpos + x) > outend) { fprintf(stderr, "Not enough space!\n"); return 0; } | |
59 | #define CHECK_AVAIL(x) if ((*inpos + x) > inend) { fprintf(stderr, "Not enough input available!\n"); return 0; } | |
60 | ||
61 | static int format_part_out(uint8_t **inpos, int inlen, uint8_t **outpos, int outlen, int len, int flags) | |
62 | { | |
63 | const uint8_t nibble[16] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', | |
64 | 'A', 'B', 'C', 'D', 'E', 'F'}; | |
65 | uint8_t *buf_out = *outpos; | |
66 | uint8_t *outend = *outpos + outlen; | |
67 | uint8_t *inend = *inpos + inlen; | |
68 | int i; | |
69 | ||
70 | if (flags & FLAG_COMMA_BEFORE) { | |
71 | CHECK_SPACE(1); | |
72 | **outpos=','; | |
73 | *outpos += 1; | |
74 | } | |
75 | ||
76 | if (flags & FLAG_LENGTH_BYTE) { | |
77 | CHECK_AVAIL(1); | |
78 | len = **inpos; | |
79 | *inpos += 1; | |
80 | } | |
81 | ||
82 | if (flags & FLAG_FORMAT_HEX) { | |
83 | CHECK_AVAIL(len); | |
84 | CHECK_SPACE(len*2); | |
85 | for (i = 0; i < len; i++) { | |
86 | **outpos = nibble[((**inpos) & 0xf0) >> 4]; | |
87 | *outpos += 1; | |
88 | **outpos = nibble[((**inpos) & 0xf)]; | |
89 | *inpos += 1; *outpos += 1; | |
90 | } | |
91 | } else { | |
92 | CHECK_AVAIL(len); | |
93 | CHECK_SPACE(len); | |
94 | memcpy(*outpos, *inpos, len); | |
95 | *outpos += len; | |
96 | *inpos += len; | |
97 | } | |
98 | ||
99 | if (flags & FLAG_COMMA_AFTER) { | |
100 | CHECK_SPACE(1); | |
101 | **outpos=','; | |
102 | *outpos += 1; | |
103 | } | |
104 | ||
105 | if (flags & FLAG_NL) { | |
106 | CHECK_SPACE(2); | |
107 | **outpos='\r'; | |
108 | *outpos += 1; | |
109 | **outpos='\n'; | |
110 | *outpos += 1; | |
111 | } | |
112 | ||
113 | return *outpos - buf_out; | |
114 | } | |
115 | ||
116 | static uint8_t ascii_to_nibble(uint8_t a) | |
117 | { | |
118 | uint8_t c = 0x00; | |
119 | ||
120 | if ((a >= '0') && (a <= '9')) { | |
121 | c = a - '0'; | |
122 | } else if ((a >= 'A') && (a <= 'F')) { | |
123 | c = (a - 'A') + 10; | |
124 | } else if ((a >= 'a') && (a <= 'f')) { | |
125 | c = (a - 'a') + 10; | |
126 | } | |
127 | ||
128 | return c; | |
129 | } | |
130 | ||
131 | static int parse_part_in(uint8_t **inpos, int inlen, uint8_t **outpos, int outlen, int flags) | |
132 | { | |
133 | uint8_t *buf_out = *outpos; | |
134 | uint8_t *outend = *outpos + outlen; | |
135 | uint8_t *inend = *inpos + inlen; | |
136 | ||
137 | if (flags & FLAG_LENGTH_BYTE) { | |
138 | int len = 0; | |
139 | uint8_t *ip; | |
140 | ||
141 | ip = *inpos; | |
142 | while(ip < inend) { | |
143 | if (*ip == ',') { | |
144 | ip++; | |
145 | if (!(flags & FLAG_IGNORE_COMMAS)) | |
146 | break; | |
147 | ||
148 | continue; | |
149 | } | |
150 | len++; | |
151 | ip++; | |
152 | } | |
153 | CHECK_SPACE(1); | |
154 | **outpos = (len / 2); | |
155 | *outpos += 1; | |
156 | } | |
157 | ||
158 | while(*inpos < inend) { | |
159 | if (**inpos == ',') { | |
160 | *inpos += 1; | |
161 | if (!(flags & FLAG_IGNORE_COMMAS)) | |
162 | break; | |
163 | ||
164 | continue; | |
165 | } | |
166 | ||
167 | CHECK_SPACE(1); | |
168 | CHECK_AVAIL(2); | |
169 | ||
170 | **outpos = ascii_to_nibble(**inpos) << 4; | |
171 | *inpos += 1; | |
172 | **outpos |= ascii_to_nibble(**inpos); | |
173 | *inpos += 1; *outpos += 1; | |
174 | } | |
175 | ||
176 | return *outpos - buf_out; | |
177 | } | |
178 | ||
179 | static int hmlan_format_out(uint8_t *buf, int buf_len, void *data) | |
180 | { | |
181 | uint8_t out[1024]; | |
182 | uint8_t *outpos; | |
183 | uint8_t *inpos; | |
184 | int fd = *((int*)data); | |
185 | int w; | |
186 | ||
187 | if (buf_len < 1) | |
188 | return 1; | |
189 | ||
190 | memset(out, 0, sizeof(out)); | |
191 | outpos = out; | |
192 | inpos = buf; | |
193 | ||
194 | format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 1, 0); | |
195 | switch(buf[0]) { | |
196 | case 'H': | |
197 | if (impersonate_hmlanif) { | |
198 | buf[5] = 'L'; | |
199 | buf[6] = 'A'; | |
200 | buf[7] = 'N'; | |
201 | } | |
202 | format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 0, FLAG_LENGTH_BYTE); | |
203 | format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 2, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE); | |
204 | format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 0, FLAG_COMMA_BEFORE | FLAG_LENGTH_BYTE); | |
205 | format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 3, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE); | |
206 | format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 3, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE); | |
207 | format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 4, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE); | |
208 | format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 2, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE | FLAG_NL); | |
209 | ||
210 | break; | |
211 | case 'E': | |
212 | format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 3, FLAG_FORMAT_HEX); | |
213 | format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 2, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE); | |
214 | format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 4, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE); | |
215 | format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 1, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE); | |
216 | format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 2, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE); | |
217 | format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 0, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE | FLAG_LENGTH_BYTE | FLAG_NL); | |
218 | ||
219 | break; | |
220 | case 'R': | |
221 | format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 4, FLAG_FORMAT_HEX); | |
222 | format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 2, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE); | |
223 | format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 4, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE); | |
224 | format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 1, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE); | |
225 | format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 2, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE); | |
226 | format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 0, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE | FLAG_LENGTH_BYTE | FLAG_NL); | |
227 | ||
228 | break; | |
229 | case 'I': | |
230 | format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 1, FLAG_FORMAT_HEX); | |
231 | format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 1, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE); | |
232 | format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 1, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE); | |
233 | format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 1, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE | FLAG_NL); | |
234 | ||
235 | break; | |
236 | default: | |
237 | format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), buf_len-1, FLAG_FORMAT_HEX | FLAG_NL); | |
238 | hexdump(buf, buf_len, "Unknown> "); | |
239 | break; | |
240 | } | |
241 | if (debug) | |
242 | fprintf(stderr, "LAN < %s\n", out); | |
243 | ||
244 | w = write(fd, out, outpos-out); | |
245 | if (w <= 0) { | |
246 | perror("write"); | |
247 | return 0; | |
248 | } | |
249 | ||
250 | return 1; | |
251 | } | |
252 | ||
253 | static int hmlan_parse_in(int fd, void *data) | |
254 | { | |
255 | struct hmcfgusb_dev *dev = data; | |
256 | uint8_t buf[1025]; | |
257 | uint8_t out[0x40]; //FIXME!!! | |
258 | uint8_t *outpos; | |
259 | uint8_t *inpos; | |
260 | int i; | |
261 | int last; | |
262 | int r; | |
263 | ||
264 | memset(buf, 0, sizeof(buf)); | |
265 | ||
266 | r = read(fd, buf, sizeof(buf)-1); | |
267 | if (r > 0) { | |
268 | uint8_t *inend = buf + r; | |
269 | ||
270 | inpos = buf; | |
271 | ||
272 | if (debug) | |
273 | fprintf(stderr, "\nLAN > %s", buf); | |
274 | ||
275 | while (inpos < inend) { | |
276 | uint8_t *instart = inpos; | |
277 | ||
278 | if ((*inpos == '\r') || (*inpos == '\n')) { | |
279 | inpos++; | |
280 | continue; | |
281 | } | |
282 | ||
283 | outpos = out; | |
284 | ||
285 | last = inend - inpos; | |
286 | ||
287 | for (i = 0; i < last; i++) { | |
288 | if ((inpos[i] == '\r') || (inpos[i] == '\n')) { | |
289 | last = i; | |
290 | break; | |
291 | } | |
292 | } | |
293 | ||
294 | if (last == 0) | |
295 | continue; | |
296 | ||
297 | memset(out, 0, sizeof(out)); | |
298 | *outpos++ = *inpos++; | |
299 | ||
300 | switch(buf[0]) { | |
301 | case 'S': | |
302 | parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), 0); | |
303 | parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), 0); | |
304 | parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), 0); | |
305 | parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), 0); | |
306 | parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), 0); | |
307 | parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), FLAG_LENGTH_BYTE); | |
308 | break; | |
309 | default: | |
310 | parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), FLAG_IGNORE_COMMAS); | |
311 | break; | |
312 | } | |
313 | ||
314 | hmcfgusb_send(dev, out, sizeof(out), 1); | |
315 | } | |
316 | } else if (r < 0) { | |
317 | perror("read"); | |
318 | return r; | |
319 | } else { | |
320 | return 0; | |
321 | } | |
322 | ||
323 | return 1; | |
324 | } | |
325 | ||
326 | static int comm(int fd_in, int fd_out, int master_socket) | |
327 | { | |
328 | struct hmcfgusb_dev *dev; | |
329 | int quit = 0; | |
330 | ||
331 | hmcfgusb_set_debug(debug); | |
332 | ||
333 | dev = hmcfgusb_init(hmlan_format_out, &fd_out); | |
334 | if (!dev) { | |
335 | fprintf(stderr, "Can't initialize HM-CFG-USB!\n"); | |
336 | return 0; | |
337 | } | |
338 | ||
339 | if (!hmcfgusb_add_pfd(dev, fd_in, POLLIN)) { | |
340 | fprintf(stderr, "Can't add client to pollfd!\n"); | |
341 | hmcfgusb_close(dev); | |
342 | return 0; | |
343 | } | |
344 | ||
345 | if (master_socket >= 0) { | |
346 | if (!hmcfgusb_add_pfd(dev, master_socket, POLLIN)) { | |
347 | fprintf(stderr, "Can't add master_socket to pollfd!\n"); | |
348 | hmcfgusb_close(dev); | |
349 | return 0; | |
350 | } | |
351 | } | |
352 | ||
353 | hmcfgusb_send(dev, (unsigned char*)"K", 1, 1); | |
354 | ||
355 | while(!quit) { | |
356 | int fd; | |
357 | ||
358 | fd = hmcfgusb_poll(dev, 3600); | |
359 | if (fd >= 0) { | |
360 | if (fd == master_socket) { | |
361 | int client; | |
362 | ||
363 | client = accept(master_socket, NULL, 0); | |
364 | if (client >= 0) { | |
365 | shutdown(client, SHUT_RDWR); | |
366 | close(client); | |
367 | } | |
368 | } else { | |
369 | if (hmlan_parse_in(fd, dev) <= 0) { | |
370 | quit = 1; | |
371 | } | |
372 | } | |
373 | } else if (fd == -1) { | |
374 | if (errno) { | |
375 | perror("hmcfgusb_poll"); | |
376 | quit = 1; | |
377 | } | |
378 | } | |
379 | } | |
380 | ||
381 | hmcfgusb_close(dev); | |
382 | return 1; | |
383 | } | |
384 | ||
385 | void sigterm_handler(int sig) | |
386 | { | |
387 | if (unlink(PID_FILE) == -1) | |
388 | perror("Can't remove PID file"); | |
389 | ||
390 | exit(EXIT_SUCCESS); | |
391 | } | |
392 | ||
393 | #define FLAG_DAEMON (1 << 0) | |
394 | #define FLAG_PID_FILE (1 << 1) | |
395 | ||
396 | static int socket_server(char *iface, int port, int flags) | |
397 | { | |
398 | struct sigaction sact; | |
399 | struct sockaddr_in sin; | |
400 | int sock; | |
401 | int n; | |
402 | pid_t pid; | |
403 | ||
404 | if (flags & FLAG_DAEMON) { | |
405 | FILE *pidfile = NULL; | |
406 | ||
407 | if (flags & FLAG_PID_FILE) { | |
408 | mode_t old_umask; | |
409 | ||
410 | old_umask = umask(022); | |
411 | pidfile = fopen(PID_FILE, "w"); | |
412 | umask(old_umask); | |
413 | ||
414 | if (!pidfile) { | |
415 | perror("Can't create PID file " PID_FILE); | |
416 | exit(EXIT_FAILURE); | |
417 | } | |
418 | ||
419 | memset(&sact, 0, sizeof(sact)); | |
420 | sact.sa_handler = sigterm_handler; | |
421 | ||
422 | if (sigaction(SIGTERM, &sact, NULL) == -1) { | |
423 | perror("sigaction(SIGTERM)"); | |
424 | exit(EXIT_FAILURE); | |
425 | } | |
426 | } | |
427 | ||
428 | pid = fork(); | |
429 | if (pid > 0) { | |
430 | if (pidfile) { | |
431 | fprintf(pidfile, "%u\n", pid); | |
432 | fclose(pidfile); | |
433 | } | |
434 | ||
435 | printf("Daemon with PID %u started!\n", pid); | |
436 | exit(EXIT_SUCCESS); | |
437 | } else if (pid < 0) { | |
438 | perror("fork"); | |
439 | exit(EXIT_FAILURE); | |
440 | } | |
441 | ||
442 | if (pidfile) | |
443 | fclose(pidfile); | |
444 | } | |
445 | ||
446 | memset(&sact, 0, sizeof(sact)); | |
447 | sact.sa_handler = SIG_IGN; | |
448 | ||
449 | if (sigaction(SIGPIPE, &sact, NULL) == -1) { | |
450 | perror("sigaction(SIGPIPE)"); | |
451 | exit(EXIT_FAILURE); | |
452 | } | |
453 | ||
454 | impersonate_hmlanif = 1; | |
455 | ||
456 | sock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP); | |
457 | if (sock == -1) { | |
458 | perror("Can't open socket"); | |
459 | return EXIT_FAILURE; | |
460 | } | |
461 | ||
462 | n = 1; | |
463 | if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof(n)) == -1) { | |
464 | perror("Can't set socket options"); | |
465 | return EXIT_FAILURE; | |
466 | } | |
467 | ||
468 | memset(&sin, 0, sizeof(sin)); | |
469 | sin.sin_family = AF_INET; | |
470 | sin.sin_port = htons(port); | |
471 | if (!iface) { | |
472 | sin.sin_addr.s_addr = htonl(INADDR_ANY); | |
473 | } else { | |
474 | if (inet_pton(AF_INET, iface, &(sin.sin_addr.s_addr)) != 1) { | |
475 | perror("inet_ntop"); | |
476 | return EXIT_FAILURE; | |
477 | } | |
478 | } | |
479 | ||
480 | if (bind(sock, (struct sockaddr*)&sin, sizeof(sin)) == -1) { | |
481 | perror("Can't bind socket"); | |
482 | return EXIT_FAILURE; | |
483 | } | |
484 | ||
485 | if (listen(sock, 1) == -1) { | |
486 | perror("Can't listen on socket"); | |
487 | return EXIT_FAILURE; | |
488 | } | |
489 | ||
490 | while(1) { | |
491 | struct sockaddr_in csin; | |
492 | socklen_t csinlen; | |
493 | int client; | |
494 | in_addr_t client_addr; | |
495 | ||
496 | memset(&csin, 0, sizeof(csin)); | |
497 | csinlen = sizeof(csin); | |
498 | client = accept(sock, (struct sockaddr*)&csin, &csinlen); | |
499 | if (client == -1) { | |
500 | perror("Couldn't accept client"); | |
501 | continue; | |
502 | } | |
503 | ||
504 | /* FIXME: getnameinfo... */ | |
505 | client_addr = ntohl(csin.sin_addr.s_addr); | |
506 | ||
507 | if (verbose) { | |
508 | printf("Client %d.%d.%d.%d connected!\n", | |
509 | (client_addr & 0xff000000) >> 24, | |
510 | (client_addr & 0x00ff0000) >> 16, | |
511 | (client_addr & 0x0000ff00) >> 8, | |
512 | (client_addr & 0x000000ff)); | |
513 | } | |
514 | ||
515 | comm(client, client, sock); | |
516 | ||
517 | shutdown(client, SHUT_RDWR); | |
518 | close(client); | |
519 | ||
520 | if (verbose) { | |
521 | printf("Connection to %d.%d.%d.%d closed!\n", | |
522 | (client_addr & 0xff000000) >> 24, | |
523 | (client_addr & 0x00ff0000) >> 16, | |
524 | (client_addr & 0x0000ff00) >> 8, | |
525 | (client_addr & 0x000000ff)); | |
526 | } | |
527 | ||
528 | } | |
529 | ||
530 | return EXIT_SUCCESS; | |
531 | } | |
532 | ||
533 | static int interactive_server(void) | |
534 | { | |
535 | if (!comm(STDIN_FILENO, STDOUT_FILENO, -1)) | |
536 | return EXIT_FAILURE; | |
537 | ||
538 | return EXIT_SUCCESS; | |
539 | } | |
540 | ||
541 | void hmlan_syntax(char *prog) | |
542 | { | |
543 | fprintf(stderr, "Syntax: %s options\n\n", prog); | |
544 | fprintf(stderr, "Possible options:\n"); | |
545 | fprintf(stderr, "\t-D\tdebug mode\n"); | |
546 | fprintf(stderr, "\t-d\tdaemon mode\n"); | |
547 | fprintf(stderr, "\t-h\tthis help\n"); | |
548 | fprintf(stderr, "\t-i\tinteractive mode (connect HM-CFG-USB to terminal)\n"); | |
549 | fprintf(stderr, "\t-l ip\tlisten on given IP address only (for example 127.0.0.1)\n"); | |
550 | fprintf(stderr, "\t-P\tcreate PID file " PID_FILE " in daemon mode\n"); | |
551 | fprintf(stderr, "\t-p n\tlisten on port n (default 1000)\n"); | |
552 | fprintf(stderr, "\t-v\tverbose mode\n"); | |
553 | ||
554 | } | |
555 | ||
556 | int main(int argc, char **argv) | |
557 | { | |
558 | int port = 1000; | |
559 | char *iface = NULL; | |
560 | int interactive = 0; | |
561 | int flags = 0; | |
562 | char *ep; | |
563 | int opt; | |
564 | ||
565 | while((opt = getopt(argc, argv, "DdhiPp:l:v")) != -1) { | |
566 | switch (opt) { | |
567 | case 'D': | |
568 | debug = 1; | |
569 | verbose = 1; | |
570 | break; | |
571 | case 'd': | |
572 | flags |= FLAG_DAEMON; | |
573 | break; | |
574 | case 'i': | |
575 | interactive = 1; | |
576 | break; | |
577 | case 'P': | |
578 | flags |= FLAG_PID_FILE; | |
579 | break; | |
580 | case 'p': | |
581 | port = strtoul(optarg, &ep, 10); | |
582 | if (*ep != '\0') { | |
583 | fprintf(stderr, "Can't parse port!\n"); | |
584 | exit(EXIT_FAILURE); | |
585 | } | |
586 | break; | |
587 | case 'l': | |
588 | iface = optarg; | |
589 | break; | |
590 | case 'v': | |
591 | verbose = 1; | |
592 | break; | |
593 | case 'h': | |
594 | case ':': | |
595 | case '?': | |
596 | default: | |
597 | hmlan_syntax(argv[0]); | |
598 | exit(EXIT_FAILURE); | |
599 | break; | |
600 | } | |
601 | } | |
602 | ||
603 | if (interactive) { | |
604 | return interactive_server(); | |
605 | } else { | |
606 | return socket_server(iface, port, flags); | |
607 | } | |
608 | } |