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jcs zmodem: Fix compilation with ZMODEM_DEBUG enabled | Latest amendment: 270 on 2022-11-07 |
1 | /* |
2 | * Copyright (c) 2022 joshua stein <jcs@jcs.org> |
3 | * |
4 | * Copyright (C) 1994-1998 T. Teranishi |
5 | * (C) 2007- TeraTerm Project |
6 | * All rights reserved. |
7 | * |
8 | * Redistribution and use in source and binary forms, with or without |
9 | * modification, are permitted provided that the following conditions |
10 | * are met: |
11 | * |
12 | * 1. Redistributions of source code must retain the above copyright |
13 | * notice, this list of conditions and the following disclaimer. |
14 | * 2. Redistributions in binary form must reproduce the above copyright |
15 | * notice, this list of conditions and the following disclaimer in the |
16 | * documentation and/or other materials provided with the distribution. |
17 | * 3. The name of the author may not be used to endorse or promote products |
18 | * derived from this software without specific prior written permission. |
19 | * |
20 | * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR |
21 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
22 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
23 | * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
24 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
25 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
26 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
27 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
28 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
29 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
30 | */ |
31 | |
32 | #include <stdarg.h> |
33 | #include <stdio.h> |
34 | #include <stdlib.h> |
35 | #include <string.h> |
36 | #include <time.h> |
37 | |
38 | #include "crc.h" |
39 | #include "util.h" |
40 | #include "zmodem.h" |
41 | |
42 | /* #define ZMODEM_DEBUG */ |
43 | |
44 | #ifdef ZMODEM_DEBUG |
45 | #include "logger.h" |
46 | extern struct logger *logger; |
47 | #endif |
48 | |
49 | #define LOBYTE(w) ((unsigned char)(((unsigned short)(w)) & 0xff)) |
50 | #define HIBYTE(w) ((unsigned char)((((unsigned short)(w)) >> 8) & 0xff)) |
51 | #define LOWORD(l) ((unsigned short)(l)) |
52 | #define HIWORD(l) ((unsigned short)(((unsigned long)(l) >> 16) & 0xFFFF)) |
53 | |
54 | #define Z_RecvInit 1 |
55 | #define Z_RecvInit2 2 |
56 | #define Z_RecvData 3 |
57 | #define Z_RecvFIN 4 |
58 | #define Z_SendInit 5 |
59 | #define Z_SendInitHdr 6 |
60 | #define Z_SendInitDat 7 |
61 | #define Z_SendFileHdr 8 |
62 | #define Z_SendFileDat 9 |
63 | #define Z_SendDataHdr 10 |
64 | #define Z_SendDataDat 11 |
65 | #define Z_SendDataDat2 12 |
66 | #define Z_SendEOF 13 |
67 | #define Z_SendFIN 14 |
68 | #define Z_SendSkip 15 |
69 | #define Z_Cancel 16 |
70 | #define Z_End 17 |
71 | |
72 | #define Z_PktGetPAD 1 |
73 | #define Z_PktGetDLE 2 |
74 | #define Z_PktHdrFrm 3 |
75 | #define Z_PktGetBin 4 |
76 | #define Z_PktGetHex 5 |
77 | #define Z_PktGetHexEOL 6 |
78 | #define Z_PktGetData 7 |
79 | #define Z_PktGetCRC 8 |
80 | |
81 | #define ZPAD '*' |
82 | #define ZDLE 0x18 |
83 | #define ZDLEE 0x58 |
84 | #define ZBIN 'A' |
85 | #define ZHEX 'B' |
86 | #define ZBIN32 'C' |
87 | |
88 | #define ZRQINIT 0 |
89 | #define ZRINIT 1 |
90 | #define ZSINIT 2 |
91 | #define ZACK 3 |
92 | #define ZFILE 4 |
93 | #define ZSKIP 5 |
94 | #define ZNAK 6 |
95 | #define ZABORT 7 |
96 | #define ZFIN 8 |
97 | #define ZRPOS 9 |
98 | #define ZDATA 10 |
99 | #define ZEOF 11 |
100 | #define ZFERR 12 |
101 | #define ZCRC 13 |
102 | #define ZCHALLENGE 14 |
103 | #define ZCOMPL 15 |
104 | #define ZCAN 16 |
105 | #define ZFREECNT 17 |
106 | #define ZCOMMAND 18 |
107 | #define ZSTDERR 19 |
108 | |
109 | #define ZCRCE 'h' |
110 | #define ZCRCG 'i' |
111 | #define ZCRCQ 'j' |
112 | #define ZCRCW 'k' |
113 | #define ZRUB0 'l' |
114 | #define ZRUB1 'm' |
115 | |
116 | #define ZF0 3 |
117 | #define ZF1 2 |
118 | #define ZF2 1 |
119 | #define ZF3 0 |
120 | #define ZP0 0 |
121 | #define ZP1 1 |
122 | #define ZP2 2 |
123 | #define ZP3 3 |
124 | |
125 | #define CANFDX 0x01 |
126 | #define CANOVIO 0x02 |
127 | #define CANBRK 0x04 |
128 | #define CANCRY 0x08 |
129 | #define CANLZW 0x10 |
130 | #define CANFC32 0x20 |
131 | #define ESCCTL 0x40 |
132 | #define ESC8 0x80 |
133 | |
134 | #define ZCBIN 1 |
135 | #define ZCNL 2 |
136 | |
137 | #define XON 0x11 |
138 | #define IAC 0xff |
139 | |
140 | short ZRead1Byte(struct zmodem_session *, unsigned char *); |
141 | void ZPutHex(struct zmodem_session *, short *, unsigned char); |
142 | void ZResetTimeout(struct zmodem_session *, short); |
143 | void ZShHdr(struct zmodem_session *, unsigned char); |
144 | void ZPutBin(struct zmodem_session *, short *, unsigned char); |
145 | void ZSbHdr(struct zmodem_session *, unsigned char); |
146 | void ZStoHdr(struct zmodem_session *, unsigned long); |
147 | long ZRclHdr(struct zmodem_session *); |
148 | void ZSendRInit(struct zmodem_session *); |
149 | void ZSendRQInit(struct zmodem_session *); |
150 | void ZSendRPOS(struct zmodem_session *); |
151 | void ZSendACK(struct zmodem_session *); |
152 | void ZSendNAK(struct zmodem_session *); |
153 | void ZSendEOF(struct zmodem_session *); |
154 | void ZSendFIN(struct zmodem_session *); |
155 | void ZSendSkip(struct zmodem_session *); |
156 | void ZSendCancel(struct zmodem_session *); |
157 | void ZSendInitHdr(struct zmodem_session *); |
158 | void ZSendInitDat(struct zmodem_session *); |
159 | void ZSendFileHdr(struct zmodem_session *); |
160 | void ZSendFileDat(struct zmodem_session *); |
161 | void ZSendDataHdr(struct zmodem_session *); |
162 | void ZSendDataDat(struct zmodem_session *); |
163 | bool ZCheckHdr(struct zmodem_session *); |
164 | void ZParseRInit(struct zmodem_session *); |
165 | bool ZParseSInit(struct zmodem_session *); |
166 | void ZParseHdr(struct zmodem_session *); |
167 | bool ZCreateTemporaryFile(struct zmodem_session *); |
168 | bool ZParseFile(struct zmodem_session *); |
169 | bool ZWriteData(struct zmodem_session *); |
170 | void ZCheckData(struct zmodem_session *); |
171 | |
172 | #ifdef ZMODEM_DEBUG |
173 | |
174 | static const char * |
175 | hdrtype_name(short type) |
176 | { |
177 | static const char *s[] = { |
178 | "ZRQINIT", |
179 | "ZRINIT", |
180 | "ZSINIT", |
181 | "ZACK", |
182 | "ZFILE", |
183 | "ZSKIP", |
184 | "ZNAK", |
185 | "ZABORT", |
186 | "ZFIN", |
187 | "ZRPOS", |
188 | "ZDATA", |
189 | "ZEOF", |
190 | "ZFERR", |
191 | "ZCRC", |
192 | "ZCHALLENGE", |
193 | "ZCOMPL", |
194 | "ZCAN", |
195 | "ZFREECNT", |
196 | "ZCOMMAND", |
197 | "ZSTDERR", |
198 | }; |
199 | |
200 | if (type >= ZRQINIT && type <= ZSTDERR) |
201 | return (s[type]); |
202 | |
203 | return NULL; |
204 | } |
205 | |
206 | static const char * |
207 | state_name(struct zmodem_session *zs) |
208 | { |
209 | static const char *s[] = { |
210 | "", |
211 | "Z_RecvInit", |
212 | "Z_RecvInit2", |
213 | "Z_RecvData", |
214 | "Z_RecvFIN", |
215 | "Z_SendInit", |
216 | "Z_SendInitHdr", |
217 | "Z_SendInitDat", |
218 | "Z_SendFileHdr", |
219 | "Z_SendFileDat", |
220 | "Z_SendDataHdr", |
221 | "Z_SendDataDat", |
222 | "Z_SendDataDat2", |
223 | "Z_SendEOF", |
224 | "Z_SendFIN", |
225 | "Z_SendSkip", |
226 | "Z_Cancel", |
227 | "Z_End", |
228 | }; |
229 | |
230 | if (zs->ZState >= Z_RecvInit && zs->ZState <= Z_End) |
231 | return (s[zs->ZState]); |
232 | |
233 | return NULL; |
234 | } |
235 | |
236 | #endif /* ZMODEM_DEBUG */ |
237 | |
238 | struct zmodem_session * |
239 | ZCreateSender(struct session *session, FILE *fp, char *file_name) |
240 | { |
241 | struct zmodem_session *zs; |
242 | |
243 | if (!fp) |
244 | return NULL; |
245 | |
246 | zs = xmalloczero(sizeof(struct zmodem_session), "ZCreateSender"); |
247 | zs->session = session; |
248 | zs->file = fp; |
249 | strlcpy(zs->file_name, file_name, sizeof(zs->file_name)); |
250 | |
251 | fseek(zs->file, 0, SEEK_END); |
252 | zs->file_size = ftell(zs->file); |
253 | fseek(zs->file, 0, SEEK_SET); |
254 | |
255 | zs->BinFlag = true; |
256 | zs->ZMode = IdZAutoS; |
257 | |
258 | return zs; |
259 | } |
260 | |
261 | struct zmodem_session * |
262 | ZCreateReceiver(struct session *session, char *path) |
263 | { |
264 | struct zmodem_session *zs; |
265 | |
266 | zs = xmalloczero(sizeof(struct zmodem_session), "ZCreateReceiver"); |
267 | zs->session = session; |
268 | zs->ZMode = IdZAutoR; |
269 | zs->upload_file_path = xstrdup(path, "zmodem path"); |
270 | |
271 | return zs; |
272 | } |
273 | |
274 | short |
275 | ZRead1Byte(struct zmodem_session *zs, unsigned char *b) |
276 | { |
277 | if (zs->DoIACEscape && zs->LastIAC != 0 && zs->LastIAC != IAC) { |
278 | *b = zs->LastIAC; |
279 | zs->LastIAC = 0; |
280 | return 1; |
281 | } |
282 | |
283 | if (session_get_char(zs->session, b) == 0) |
284 | return 0; |
285 | |
286 | if (zs->DoIACEscape && zs->LastIAC) { |
287 | if (*b == IAC) { |
288 | zs->LastIAC = 0; |
289 | return 1; |
290 | } |
291 | |
292 | /* |
293 | * The IAC was not escaping an IAC, so return IAC this time and |
294 | * save the byte we just read for the next iteration. |
295 | */ |
296 | zs->LastIAC = *b; |
297 | *b = IAC; |
298 | return 1; |
299 | } |
300 | |
301 | if (zs->DoIACEscape && *b == IAC) { |
302 | zs->LastIAC = IAC; |
303 | return 0; |
304 | } |
305 | |
306 | /* ignore 0x11, 0x13, 0x81 and 0x83 */ |
307 | if (((*b & 0x7F) == 0x11) || ((*b & 0x7F) == 0x13)) |
308 | return 0; |
309 | |
310 | return 1; |
311 | } |
312 | |
313 | void |
314 | ZPutHex(struct zmodem_session *zs, short *i, unsigned char b) |
315 | { |
316 | if (b <= 0x9f) |
317 | zs->PktOut[*i] = (b >> 4) + 0x30; |
318 | else |
319 | zs->PktOut[*i] = (b >> 4) + 0x57; |
320 | |
321 | (*i)++; |
322 | |
323 | if ((b & 0x0F) <= 0x09) |
324 | zs->PktOut[*i] = (b & 0x0F) + 0x30; |
325 | else |
326 | zs->PktOut[*i] = (b & 0x0F) + 0x57; |
327 | |
328 | (*i)++; |
329 | } |
330 | |
331 | void |
332 | ZResetTimeout(struct zmodem_session *zs, short seconds) |
333 | { |
334 | zs->TimeOutAt = time(NULL) + seconds; |
335 | } |
336 | |
337 | bool |
338 | ZHaveTimedOut(struct zmodem_session *zs) |
339 | { |
340 | if (zs->TimeOutAt && time(NULL) >= zs->TimeOutAt) |
341 | return true; |
342 | |
343 | return false; |
344 | } |
345 | |
346 | void |
347 | ZShHdr(struct zmodem_session *zs, unsigned char HdrType) |
348 | { |
349 | short i; |
350 | |
351 | zs->PktOut[0] = ZPAD; |
352 | zs->PktOut[1] = ZPAD; |
353 | zs->PktOut[2] = ZDLE; |
354 | zs->PktOut[3] = ZHEX; |
355 | zs->PktOutCount = 4; |
356 | ZPutHex(zs, &(zs->PktOutCount), HdrType); |
357 | zs->CRC = UpdateCRC(HdrType, 0); |
358 | for (i = 0; i <= 3; i++) { |
359 | ZPutHex(zs, &(zs->PktOutCount), zs->TxHdr[i]); |
360 | zs->CRC = UpdateCRC(zs->TxHdr[i], zs->CRC); |
361 | } |
362 | ZPutHex(zs, &(zs->PktOutCount), HIBYTE(zs->CRC)); |
363 | ZPutHex(zs, &(zs->PktOutCount), LOBYTE(zs->CRC)); |
364 | zs->PktOut[zs->PktOutCount] = 0x8D; |
365 | zs->PktOutCount++; |
366 | zs->PktOut[zs->PktOutCount] = 0x8A; |
367 | zs->PktOutCount++; |
368 | |
369 | if ((HdrType != ZFIN) && (HdrType != ZACK)) { |
370 | zs->PktOut[zs->PktOutCount] = XON; |
371 | zs->PktOutCount++; |
372 | } |
373 | |
374 | zs->PktOutPtr = 0; |
375 | zs->Sending = true; |
376 | |
377 | #ifdef ZMODEM_DEBUG |
378 | logger_printf("[%s] ZShHdr: %s", state_name(zs), |
379 | hdrtype_name(HdrType)); |
380 | #endif |
381 | } |
382 | |
383 | /* |
384 | * In lrzsz, ZDLE (CAN), DLE, XON, XOFF, CR immediately after @, and these |
385 | * Characters with MSB are escaped. |
386 | * It seems that it was the same as lrzsz in Tera Term before, but for some |
387 | * reason CR is always changed to escape target. |
388 | * |
389 | * To avoid problems if you connect to ssh / telnet from the destination |
390 | * LF and GS are also added to the default escape target. |
391 | * ssh: ~ immediately after LF or CR is treated as an escape character |
392 | * telnet: GS is the escape character |
393 | */ |
394 | void |
395 | ZPutBin(struct zmodem_session *zs, short *i, unsigned char b) |
396 | { |
397 | switch (b) { |
398 | case 0x0D: // CR |
399 | case 0x8D: // CR | 0x80 |
400 | // if (zs->CtlEsc || ((zs->LastSent & 0x7f) == '@')) { |
401 | zs->PktOut[*i] = ZDLE; |
402 | (*i)++; |
403 | b = b ^ 0x40; |
404 | // } |
405 | break; |
406 | case 0x0A: // LF |
407 | case 0x10: // DLE |
408 | case 0x11: // XON |
409 | case 0x13: // XOFF |
410 | case 0x1d: // GS |
411 | case ZDLE: // CAN(0x18) |
412 | case 0x8A: // LF | 0x80 |
413 | case 0x90: // DLE | 0x80 |
414 | case 0x91: // XON | 0x80 |
415 | case 0x93: // XOFF | 0x80 |
416 | case 0x9d: // GS | 0x80 |
417 | zs->PktOut[*i] = ZDLE; |
418 | (*i)++; |
419 | b = b ^ 0x40; |
420 | break; |
421 | case 0xff: |
422 | if (zs->DoIACEscape) { |
423 | zs->PktOut[*i] = 0xff; |
424 | (*i)++; |
425 | } |
426 | /* FALLTHROUGH */ |
427 | default: |
428 | if (zs->CtlEsc && ((b & 0x60) == 0)) { |
429 | zs->PktOut[*i] = ZDLE; |
430 | (*i)++; |
431 | b = b ^ 0x40; |
432 | } |
433 | } |
434 | zs->LastSent = b; |
435 | zs->PktOut[*i] = b; |
436 | (*i)++; |
437 | } |
438 | |
439 | void |
440 | ZSbHdr(struct zmodem_session *zs, unsigned char HdrType) |
441 | { |
442 | short i; |
443 | |
444 | zs->PktOut[0] = ZPAD; |
445 | zs->PktOut[1] = ZDLE; |
446 | zs->PktOut[2] = ZBIN; |
447 | zs->PktOutCount = 3; |
448 | ZPutBin(zs, &(zs->PktOutCount), HdrType); |
449 | zs->CRC = UpdateCRC(HdrType, 0); |
450 | for (i = 0; i <= 3; i++) { |
451 | ZPutBin(zs, &(zs->PktOutCount), zs->TxHdr[i]); |
452 | zs->CRC = UpdateCRC(zs->TxHdr[i], zs->CRC); |
453 | } |
454 | ZPutBin(zs, &(zs->PktOutCount), HIBYTE(zs->CRC)); |
455 | ZPutBin(zs, &(zs->PktOutCount), LOBYTE(zs->CRC)); |
456 | |
457 | zs->PktOutPtr = 0; |
458 | zs->Sending = true; |
459 | |
460 | #ifdef ZMODEM_DEBUG |
461 | logger_printf("[%s] ZSbHdr: %s", state_name(zs), |
462 | hdrtype_name(HdrType)); |
463 | #endif |
464 | } |
465 | |
466 | void |
467 | ZStoHdr(struct zmodem_session *zs, unsigned long Pos) |
468 | { |
469 | zs->TxHdr[ZP0] = LOBYTE(LOWORD(Pos)); |
470 | zs->TxHdr[ZP1] = HIBYTE(LOWORD(Pos)); |
471 | zs->TxHdr[ZP2] = LOBYTE(HIWORD(Pos)); |
472 | zs->TxHdr[ZP3] = HIBYTE(HIWORD(Pos)); |
473 | } |
474 | |
475 | long |
476 | ZRclHdr(struct zmodem_session *zs) |
477 | { |
478 | unsigned long l; |
479 | |
480 | l = (unsigned char)(zs->RxHdr[ZP3]); |
481 | l = (l << 8) + (unsigned char)(zs->RxHdr[ZP2]); |
482 | l = (l << 8) + (unsigned char)(zs->RxHdr[ZP1]); |
483 | return ((l << 8) + (unsigned char)(zs->RxHdr[ZP0])); |
484 | } |
485 | |
486 | void |
487 | ZSendRInit(struct zmodem_session *zs) |
488 | { |
489 | zs->Pos = 0; |
490 | ZStoHdr(zs, 0); |
491 | zs->TxHdr[ZF0] = CANFC32 | CANFDX; // | CANOVIO; |
492 | if (zs->CtlEsc) |
493 | zs->TxHdr[ZF0] = zs->TxHdr[ZF0] | ESCCTL; |
494 | ZShHdr(zs, ZRINIT); |
495 | } |
496 | |
497 | void |
498 | ZSendRQInit(struct zmodem_session *zs) |
499 | { |
500 | ZStoHdr(zs, 0); |
501 | ZShHdr(zs, ZRQINIT); |
502 | } |
503 | |
504 | void |
505 | ZSendRPOS(struct zmodem_session *zs) |
506 | { |
507 | ZStoHdr(zs, zs->Pos); |
508 | ZShHdr(zs, ZRPOS); |
509 | ZResetTimeout(zs, zs->TimeOut); |
510 | } |
511 | |
512 | void |
513 | ZSendACK(struct zmodem_session *zs) |
514 | { |
515 | ZStoHdr(zs, 0); |
516 | ZShHdr(zs, ZACK); |
517 | ZResetTimeout(zs, zs->TimeOut); |
518 | } |
519 | |
520 | void |
521 | ZSendNAK(struct zmodem_session *zs) |
522 | { |
523 | ZStoHdr(zs, 0); |
524 | ZShHdr(zs, ZNAK); |
525 | } |
526 | |
527 | void |
528 | ZSendEOF(struct zmodem_session *zs) |
529 | { |
530 | ZStoHdr(zs, zs->Pos); |
531 | ZShHdr(zs, ZEOF); |
532 | zs->ZState = Z_SendEOF; |
533 | } |
534 | |
535 | void |
536 | ZSendFIN(struct zmodem_session *zs) |
537 | { |
538 | ZStoHdr(zs, 0); |
539 | ZShHdr(zs, ZFIN); |
540 | } |
541 | |
542 | void |
543 | ZSendSkip(struct zmodem_session *zs) |
544 | { |
545 | ZStoHdr(zs, 0); |
546 | ZShHdr(zs, ZSKIP); |
547 | } |
548 | |
549 | void |
550 | ZSendCancel(struct zmodem_session *zs) |
551 | { |
552 | short i; |
553 | |
554 | for (i = 0; i <= 7; i++) |
555 | zs->PktOut[i] = ZDLE; |
556 | for (i = 8; i <= 17; i++) |
557 | zs->PktOut[i] = 0x08; |
558 | zs->PktOutCount = 18; |
559 | zs->PktOutPtr = 0; |
560 | zs->Sending = true; |
561 | zs->ZState = Z_Cancel; |
562 | |
563 | #ifdef ZMODEM_DEBUG |
564 | logger_printf("[%s] ZSendCancel", state_name(zs)); |
565 | #endif |
566 | } |
567 | |
568 | void |
569 | ZSendInitHdr(struct zmodem_session *zs) |
570 | { |
571 | zs->ZState = Z_SendInitHdr; |
572 | ZStoHdr(zs, 0); |
573 | if (zs->CtlEsc) |
574 | zs->TxHdr[ZF0] = ESCCTL; |
575 | ZShHdr(zs, ZSINIT); |
576 | } |
577 | |
578 | void |
579 | ZSendInitDat(struct zmodem_session *zs) |
580 | { |
581 | zs->CRC = 0; |
582 | zs->PktOutCount = 0; |
583 | ZPutBin(zs, &(zs->PktOutCount), 0); |
584 | zs->CRC = UpdateCRC(0, zs->CRC); |
585 | |
586 | zs->PktOut[zs->PktOutCount] = ZDLE; |
587 | zs->PktOutCount++; |
588 | zs->PktOut[zs->PktOutCount] = ZCRCW; |
589 | zs->PktOutCount++; |
590 | zs->CRC = UpdateCRC(ZCRCW, zs->CRC); |
591 | |
592 | ZPutBin(zs, &(zs->PktOutCount), HIBYTE(zs->CRC)); |
593 | ZPutBin(zs, &(zs->PktOutCount), LOBYTE(zs->CRC)); |
594 | |
595 | zs->PktOutPtr = 0; |
596 | zs->Sending = true; |
597 | zs->ZState = Z_SendInitDat; |
598 | |
599 | #ifdef ZMODEM_DEBUG |
600 | logger_printf("[%s] ZSendInitDat", state_name(zs)); |
601 | #endif |
602 | } |
603 | |
604 | void |
605 | ZSendFileHdr(struct zmodem_session *zs) |
606 | { |
607 | zs->ZState = Z_SendFileHdr; |
608 | ZStoHdr(zs, 0); |
609 | if (zs->BinFlag) |
610 | zs->TxHdr[ZF0] = ZCBIN; /* binary file */ |
611 | else |
612 | zs->TxHdr[ZF0] = ZCNL; /* text file, convert newline */ |
613 | ZSbHdr(zs, ZFILE); |
614 | |
615 | #ifdef ZMODEM_DEBUG |
616 | logger_printf("[%s] ZSendFileHdr: %s", state_name(zs), |
617 | zs->BinFlag ? "binary" : "text"); |
618 | #endif |
619 | } |
620 | |
621 | void |
622 | ZSendFileDat(struct zmodem_session *zs) |
623 | { |
624 | short i, j; |
625 | |
626 | if (!zs->file) { |
627 | #ifdef ZMODEM_DEBUG |
628 | logger_printf("[%s] ZSendFileDat: no file, canceling", |
629 | state_name(zs)); |
630 | #endif |
631 | ZSendCancel(zs); |
632 | return; |
633 | } |
634 | |
635 | /* file name */ |
636 | strlcpy((char *)zs->PktOut, zs->file_name, sizeof(zs->PktOut)); |
637 | zs->PktOutCount = strlen((char *)zs->PktOut); |
638 | zs->CRC = 0; |
639 | for (i = 0; i <= zs->PktOutCount - 1; i++) |
640 | zs->CRC = UpdateCRC(zs->PktOut[i], zs->CRC); |
641 | ZPutBin(zs, &(zs->PktOutCount), 0); |
642 | zs->CRC = UpdateCRC(0, zs->CRC); |
643 | |
644 | /* |
645 | * ZFILE fields: |
646 | * size (dec) |
647 | * mtime (oct) |
648 | * mode (oct), |
649 | * serial (oct) |
650 | * files remaining (dec) |
651 | * bytes remaining (dec) |
652 | */ |
653 | snprintf((char *)zs->PktOut + zs->PktOutCount, |
654 | sizeof(zs->PktOut) - zs->PktOutCount, |
655 | "%lu 0 100644 0 0", zs->file_size); |
656 | j = strlen((char *)zs->PktOut + zs->PktOutCount); |
657 | for (i = 0; i <= j; i++) { |
658 | zs->CRC = UpdateCRC(zs->PktOut[zs->PktOutCount], zs->CRC); |
659 | zs->PktOutCount++; |
660 | } |
661 | |
662 | ZPutBin(zs, &(zs->PktOutCount), 0); |
663 | zs->CRC = UpdateCRC(0, zs->CRC); |
664 | zs->PktOut[zs->PktOutCount] = ZDLE; |
665 | zs->PktOutCount++; |
666 | zs->PktOut[zs->PktOutCount] = ZCRCW; |
667 | zs->PktOutCount++; |
668 | zs->CRC = UpdateCRC(ZCRCW, zs->CRC); |
669 | |
670 | ZPutBin(zs, &(zs->PktOutCount), HIBYTE(zs->CRC)); |
671 | ZPutBin(zs, &(zs->PktOutCount), LOBYTE(zs->CRC)); |
672 | |
673 | zs->PktOutPtr = 0; |
674 | zs->Sending = true; |
675 | zs->ZState = Z_SendFileDat; |
676 | |
677 | fseek(zs->file, 0, SEEK_SET); |
678 | |
679 | #ifdef ZMODEM_DEBUG |
680 | logger_printf("[%s] ZSendFileDat: ZFILE: ZF0=%x ZF1=%x " |
681 | "ZF2=%x file=%s size=%lu", state_name(zs), zs->TxHdr[ZF0], |
682 | zs->TxHdr[ZF1],zs->TxHdr[ZF2], zs->file_name, zs->file_size); |
683 | #endif |
684 | } |
685 | |
686 | void |
687 | ZSendDataHdr(struct zmodem_session *zs) |
688 | { |
689 | zs->ZState = Z_SendDataHdr; |
690 | ZStoHdr(zs, zs->Pos); |
691 | ZSbHdr(zs, ZDATA); |
692 | } |
693 | |
694 | void |
695 | ZSendDataDat(struct zmodem_session *zs) |
696 | { |
697 | short c; |
698 | unsigned char b; |
699 | |
700 | if (zs->Pos >= zs->file_size) { |
701 | #ifdef ZMODEM_DEBUG |
702 | logger_printf("[%s] ZSendDataDat: pos %lu >= file size %lu, EOFing", |
703 | state_name(zs), zs->Pos, zs->file_size); |
704 | #endif |
705 | zs->Pos = zs->file_size; |
706 | ZSendEOF(zs); |
707 | fclose(zs->file); |
708 | zs->file = NULL; |
709 | return; |
710 | } |
711 | |
712 | if (zs->Pos != ftell(zs->file)) |
713 | fseek(zs->file, zs->Pos, SEEK_SET); |
714 | |
715 | zs->CRC = 0; |
716 | zs->PktOutCount = 0; |
717 | do { |
718 | c = fread(&b, 1, 1, zs->file); |
719 | if (c > 0) { |
720 | ZPutBin(zs, &(zs->PktOutCount), b); |
721 | zs->CRC = UpdateCRC(b, zs->CRC); |
722 | } |
723 | } while ((c != 0) && (zs->PktOutCount <= zs->MaxDataLen - 2)); |
724 | |
725 | zs->Pos = ftell(zs->file); |
726 | |
727 | zs->PktOut[zs->PktOutCount] = ZDLE; |
728 | zs->PktOutCount++; |
729 | if (zs->Pos >= zs->file_size) |
730 | b = ZCRCE; |
731 | else if ((zs->WinSize >= 0) && (zs->Pos - zs->LastPos > zs->WinSize)) |
732 | b = ZCRCQ; |
733 | else |
734 | b = ZCRCG; |
735 | zs->PktOut[zs->PktOutCount] = b; |
736 | zs->PktOutCount++; |
737 | zs->CRC = UpdateCRC(b, zs->CRC); |
738 | |
739 | ZPutBin(zs, &(zs->PktOutCount), HIBYTE(zs->CRC)); |
740 | ZPutBin(zs, &(zs->PktOutCount), LOBYTE(zs->CRC)); |
741 | |
742 | zs->PktOutPtr = 0; |
743 | zs->Sending = true; |
744 | if (b == ZCRCQ) |
745 | zs->ZState = Z_SendDataDat2; /* wait for response from receiver */ |
746 | else |
747 | zs->ZState = Z_SendDataDat; |
748 | |
749 | ZResetTimeout(zs, zs->TimeOut); |
750 | |
751 | #ifdef ZMODEM_DEBUG |
752 | logger_printf("[%s] ZSendDataDat: pos=%ld", state_name(zs), zs->Pos); |
753 | #endif |
754 | } |
755 | |
756 | bool |
757 | ZInit(struct zmodem_session *zs) |
758 | { |
759 | zs->CtlEsc = false; |
760 | zs->MaxDataLen = ZMODEM_BLOCK_SIZE; |
761 | zs->WinSize = 32767; |
762 | |
763 | if (zs->ZMode == IdZAutoR || zs->ZMode == IdZAutoS) { |
764 | if (zs->ZMode == IdZAutoR) { |
765 | zs->ZMode = IdZReceive; |
766 | session_output(zs->session, (const char *)'0', 1); |
767 | } else { |
768 | zs->ZMode = IdZSend; |
769 | session_output(zs->session, (const char *)'1', 1); |
770 | } |
771 | session_output(zs->session, (const char *)'0', 1); |
772 | session_output(zs->session, (const char *)'B', 1); |
773 | session_output(zs->session, (const char *)ZDLE, 1); |
774 | session_output(zs->session, (const char *)ZPAD, 1); |
775 | } |
776 | |
777 | zs->PktOutCount = 0; |
778 | zs->Pos = 0; |
779 | zs->LastPos = 0; |
780 | zs->ZPktState = Z_PktGetPAD; |
781 | zs->Sending = false; |
782 | zs->LastSent = 0; |
783 | zs->CanCount = 5; |
784 | |
785 | if (zs->MaxDataLen <= 0) |
786 | zs->MaxDataLen = ZMODEM_BLOCK_SIZE; |
787 | if (zs->MaxDataLen < 64) |
788 | zs->MaxDataLen = 64; |
789 | if (zs->MaxDataLen > ZMODEM_BLOCK_SIZE) |
790 | zs->MaxDataLen = ZMODEM_BLOCK_SIZE; |
791 | |
792 | zs->TimeOut = 10; |
793 | ZResetTimeout(zs, zs->TimeOut); |
794 | |
795 | #ifdef ZMODEM_DEBUG |
796 | logger_printf("[%s] ZInit: %s", state_name(zs), |
797 | zs->ZMode == IdZReceive ? "receive" : "send"); |
798 | #endif |
799 | |
800 | switch (zs->ZMode) { |
801 | case IdZReceive: |
802 | zs->ZState = Z_RecvInit; |
803 | /* give the user extra time to pick a file */ |
804 | ZResetTimeout(zs, zs->TimeOut * 3); |
805 | ZSendRInit(zs); |
806 | break; |
807 | case IdZSend: |
808 | zs->ZState = Z_SendInit; |
809 | ZSendRQInit(zs); |
810 | break; |
811 | } |
812 | |
813 | return true; |
814 | } |
815 | |
816 | void |
817 | ZTimeOutProc(struct zmodem_session *zs) |
818 | { |
819 | #ifdef ZMODEM_DEBUG |
820 | logger_printf("[%s] ZTimeOutProc", state_name(zs)); |
821 | #endif |
822 | |
823 | switch (zs->ZState) { |
824 | case Z_RecvInit: |
825 | ZSendRInit(zs); |
826 | break; |
827 | case Z_RecvInit2: |
828 | ZSendACK(zs); /* Ack for ZSINIT */ |
829 | break; |
830 | case Z_RecvData: |
831 | ZSendRPOS(zs); |
832 | break; |
833 | case Z_RecvFIN: |
834 | zs->ZState = Z_End; |
835 | break; |
836 | } |
837 | } |
838 | |
839 | bool |
840 | ZCheckHdr(struct zmodem_session *zs) |
841 | { |
842 | short i; |
843 | bool ok; |
844 | |
845 | if (zs->CRC32) { |
846 | zs->CRC3 = 0xFFFFFFFF; |
847 | for (i = 0; i <= 8; i++) |
848 | zs->CRC3 = UpdateCRC32(zs->PktIn[i], zs->CRC3); |
849 | ok = (zs->CRC3 == 0xDEBB20E3); |
850 | } else { |
851 | zs->CRC = 0; |
852 | for (i = 0; i <= 6; i++) |
853 | zs->CRC = UpdateCRC(zs->PktIn[i], zs->CRC); |
854 | ok = (zs->CRC == 0); |
855 | } |
856 | |
857 | if (ok) { |
858 | #ifdef ZMODEM_DEBUG |
859 | logger_printf("[%s] ZCheckHdr: CRC%s ok", state_name(zs), |
860 | zs->CRC32 ? "32" : "16"); |
861 | #endif |
862 | } else { |
863 | #ifdef ZMODEM_DEBUG |
864 | if (zs->CRC32) |
865 | logger_printf("[%s] ZCheckHdr: CRC32 check failed " |
866 | "(0x%lx != 0xDEBB20E3)", state_name(zs), zs->CRC3); |
867 | else |
868 | logger_printf("[%s] ZCheckHdr: CRC16 check failed " |
869 | "(0x%x != 0x0)", state_name(zs), zs->CRC); |
870 | #endif |
871 | switch (zs->ZState) { |
872 | case Z_RecvInit: |
873 | ZSendRInit(zs); |
874 | break; |
875 | case Z_RecvData: |
876 | ZSendRPOS(zs); |
877 | break; |
878 | } |
879 | } |
880 | zs->RxType = zs->PktIn[0]; |
881 | for (i = 1; i <= 4; i++) |
882 | zs->RxHdr[i - 1] = zs->PktIn[i]; |
883 | |
884 | return ok; |
885 | } |
886 | |
887 | void |
888 | ZParseRInit(struct zmodem_session *zs) |
889 | { |
890 | short max; |
891 | |
892 | if ((zs->ZState != Z_SendInit) && (zs->ZState != Z_SendEOF)) { |
893 | #ifdef ZMODEM_DEBUG |
894 | logger_printf("[%s] ZParseRInit: not in Init or EOF", |
895 | state_name(zs)); |
896 | #endif |
897 | return; |
898 | } |
899 | |
900 | if (!zs->file) { |
901 | #ifdef ZMODEM_DEBUG |
902 | logger_printf("[%s] ZParseRInit: no file, FINing", |
903 | state_name(zs)); |
904 | #endif |
905 | zs->ZState = Z_SendFIN; |
906 | ZSendFIN(zs); |
907 | return; |
908 | } |
909 | |
910 | if (zs->CtlEsc) { |
911 | if ((zs->RxHdr[ZF0] & ESCCTL) == 0) { |
912 | zs->ZState = Z_SendInitHdr; |
913 | ZSendInitHdr(zs); |
914 | return; |
915 | } |
916 | } else |
917 | zs->CtlEsc = (zs->RxHdr[ZF0] & ESCCTL) != 0; |
918 | |
919 | max = (zs->RxHdr[ZP1] << 8) + zs->RxHdr[ZP0]; |
920 | if (max <= 0) |
921 | max = ZMODEM_BLOCK_SIZE; |
922 | if (zs->MaxDataLen > max) |
923 | zs->MaxDataLen = max; |
924 | |
925 | #ifdef ZMODEM_DEBUG |
926 | logger_printf("[%s] ZParseRInit: max data len %d", state_name(zs), |
927 | zs->MaxDataLen); |
928 | #endif |
929 | |
930 | zs->ZState = Z_SendFileHdr; |
931 | ZSendFileHdr(zs); |
932 | } |
933 | |
934 | bool |
935 | ZParseSInit(struct zmodem_session *zs) |
936 | { |
937 | if (zs->ZState != Z_RecvInit) { |
938 | #ifdef ZMODEM_DEBUG |
939 | logger_printf("[%s] ZParseSInit: state not RecvInit", |
940 | state_name(zs)); |
941 | #endif |
942 | return false; |
943 | } |
944 | |
945 | zs->ZState = Z_RecvInit2; |
946 | zs->CtlEsc = zs->CtlEsc || ((zs->RxHdr[ZF0] & ESCCTL) != 0); |
947 | |
948 | return true; |
949 | } |
950 | |
951 | void |
952 | ZParseHdr(struct zmodem_session *zs) |
953 | { |
954 | #ifdef ZMODEM_DEBUG |
955 | logger_printf("[%s] ZParseHdr: RxType %s", state_name(zs), |
956 | hdrtype_name(zs->RxType)); |
957 | #endif |
958 | |
959 | switch (zs->RxType) { |
960 | case ZRQINIT: |
961 | if (zs->ZState == Z_RecvInit) |
962 | ZSendRInit(zs); |
963 | break; |
964 | case ZRINIT: |
965 | ZParseRInit(zs); |
966 | break; |
967 | case ZSINIT: |
968 | zs->ZPktState = Z_PktGetData; |
969 | if (zs->ZState == Z_RecvInit) |
970 | ZResetTimeout(zs, zs->TimeOut); |
971 | break; |
972 | case ZACK: |
973 | switch (zs->ZState) { |
974 | case Z_SendInitDat: |
975 | ZSendFileHdr(zs); |
976 | break; |
977 | case Z_SendDataDat2: |
978 | zs->LastPos = ZRclHdr(zs); |
979 | ZResetTimeout(zs, zs->TimeOut); |
980 | if (zs->Pos == zs->LastPos) |
981 | ZSendDataDat(zs); |
982 | else { |
983 | zs->Pos = zs->LastPos; |
984 | ZSendDataHdr(zs); |
985 | } |
986 | break; |
987 | } |
988 | break; |
989 | case ZFILE: |
990 | zs->ZPktState = Z_PktGetData; |
991 | if ((zs->ZState == Z_RecvInit) || (zs->ZState == Z_RecvInit2)) { |
992 | zs->BinFlag = (zs->RxHdr[ZF0] != ZCNL); |
993 | ZResetTimeout(zs, zs->TimeOut); |
994 | } |
995 | break; |
996 | case ZSKIP: |
997 | if (zs->file) { |
998 | fclose(zs->file); |
999 | /* |
1000 | * If you try to send a file that exists on the server |
1001 | * side, ZParseRInit () will double close, so |
1002 | * Drop the flag here. (2007.12.20 yutaka) |
1003 | */ |
1004 | zs->file = NULL; |
1005 | } |
1006 | ZStoHdr(zs, 0); |
1007 | if (zs->CtlEsc) |
1008 | zs->RxHdr[ZF0] = ESCCTL; |
1009 | zs->ZState = Z_SendInit; |
1010 | ZParseRInit(zs); |
1011 | break; |
1012 | case ZNAK: |
1013 | switch (zs->ZState) { |
1014 | case Z_SendInitHdr: |
1015 | case Z_SendInitDat: |
1016 | ZSendInitHdr(zs); |
1017 | break; |
1018 | case Z_SendFileHdr: |
1019 | case Z_SendFileDat: |
1020 | ZSendFileHdr(zs); |
1021 | break; |
1022 | } |
1023 | break; |
1024 | case ZABORT: |
1025 | case ZFERR: |
1026 | if (zs->ZMode == IdZSend) { |
1027 | zs->ZState = Z_SendFIN; |
1028 | ZSendFIN(zs); |
1029 | } |
1030 | break; |
1031 | case ZFIN: |
1032 | if (zs->ZMode == IdZReceive) { |
1033 | #if 0 |
1034 | zs->ZState = Z_RecvFIN; |
1035 | #else |
1036 | /* we only want to receive one file per session, just end */ |
1037 | zs->ZState = Z_End; |
1038 | #endif |
1039 | ZSendFIN(zs); |
1040 | zs->CanCount = 2; |
1041 | ZResetTimeout(zs, zs->TimeOut); |
1042 | } else { |
1043 | zs->ZState = Z_End; |
1044 | session_output(zs->session, (const char *)"OO", 2); |
1045 | } |
1046 | break; |
1047 | case ZRPOS: |
1048 | switch (zs->ZState) { |
1049 | case Z_SendFileDat: |
1050 | case Z_SendDataHdr: |
1051 | case Z_SendDataDat: |
1052 | case Z_SendDataDat2: |
1053 | case Z_SendEOF: |
1054 | zs->Pos = ZRclHdr(zs); |
1055 | zs->LastPos = zs->Pos; |
1056 | #ifdef ZMODEM_DEBUG |
1057 | logger_printf("[%s] ZParseHdr: pos=%ld", state_name(zs), |
1058 | zs->Pos); |
1059 | #endif |
1060 | ZSendDataHdr(zs); |
1061 | break; |
1062 | } |
1063 | break; |
1064 | case ZDATA: |
1065 | if (zs->Pos != ZRclHdr(zs)) { |
1066 | ZSendRPOS(zs); |
1067 | return; |
1068 | } |
1069 | ZResetTimeout(zs, zs->TimeOut); |
1070 | zs->ZPktState = Z_PktGetData; |
1071 | break; |
1072 | case ZEOF: |
1073 | if (zs->Pos != ZRclHdr(zs)) { |
1074 | ZSendRPOS(zs); |
1075 | return; |
1076 | } |
1077 | |
1078 | if (zs->file) { |
1079 | if (zs->CRRecv) { |
1080 | zs->CRRecv = false; |
1081 | fwrite("\r", 1, 1, zs->file); |
1082 | } |
1083 | fclose(zs->file); |
1084 | zs->file = NULL; |
1085 | } |
1086 | zs->ZState = Z_RecvInit; |
1087 | ZSendRInit(zs); |
1088 | break; |
1089 | } |
1090 | zs->Quoted = false; |
1091 | zs->CRC = 0; |
1092 | zs->CRC3 = 0xFFFFFFFF; |
1093 | zs->PktInPtr = 0; |
1094 | zs->PktInCount = 0; |
1095 | } |
1096 | |
1097 | bool |
1098 | ZCreateTemporaryFile(struct zmodem_session *zs) |
1099 | { |
1100 | if (zs->upload_file_path[0] == '\0') { |
1101 | #ifdef ZMODEM_DEBUG |
1102 | logger_printf("[%s] ZCreateTemporaryFile: no file path", |
1103 | state_name(zs)); |
1104 | #endif |
1105 | return false; |
1106 | } |
1107 | |
1108 | zs->file = fopen(zs->upload_file_path, "wb+"); |
1109 | if (zs->file == NULL) { |
1110 | #ifdef ZMODEM_DEBUG |
1111 | logger_printf("[%s] ZCreateTemporaryFile: opening %s failed", |
1112 | state_name(zs), zs->upload_file_path); |
1113 | #endif |
1114 | return false; |
1115 | } |
1116 | |
1117 | #ifdef ZMODEM_DEBUG |
1118 | logger_printf("[%s] ZCreateTemporaryFile: %s", state_name(zs), |
1119 | zs->upload_file_path); |
1120 | #endif |
1121 | |
1122 | return true; |
1123 | } |
1124 | |
1125 | bool |
1126 | ZParseFile(struct zmodem_session *zs) |
1127 | { |
1128 | unsigned char b; |
1129 | short i; |
1130 | char *p, *tfile_name; |
1131 | unsigned long modtime, file_size; |
1132 | short mode; |
1133 | short ret; |
1134 | |
1135 | if ((zs->ZState != Z_RecvInit) && (zs->ZState != Z_RecvInit2)) { |
1136 | #ifdef ZMODEM_DEBUG |
1137 | logger_printf("[%s] ZParseFile: state not RecvInit/2", |
1138 | state_name(zs)); |
1139 | #endif |
1140 | return false; |
1141 | } |
1142 | |
1143 | zs->CRRecv = false; |
1144 | |
1145 | /* file name */ |
1146 | zs->PktIn[zs->PktInPtr] = '\0'; |
1147 | |
1148 | /* don't allow paths in file name */ |
1149 | tfile_name = (char *)&zs->PktIn; |
1150 | i = 0; |
1151 | while (tfile_name[i] != '\0') { |
1152 | if (tfile_name[i] == '/') { |
1153 | tfile_name += i + 1; |
1154 | i = 0; |
1155 | } |
1156 | i++; |
1157 | } |
1158 | |
1159 | #ifdef ZMODEM_DEBUG |
1160 | logger_printf("[%s] ZParseFile: path \"%s\" -> \"%s\"", |
1161 | state_name(zs), (char *)&zs->PktIn, tfile_name); |
1162 | #endif |
1163 | |
1164 | if (tfile_name[0] == '\0') |
1165 | return false; |
1166 | |
1167 | strlcpy(zs->file_name, tfile_name, sizeof(zs->file_name)); |
1168 | |
1169 | if (!ZCreateTemporaryFile(zs)) { |
1170 | zs->file_name[0] = '\0'; |
1171 | return false; |
1172 | } |
1173 | |
1174 | /* file size */ |
1175 | i = strlen((char *)zs->PktIn) + 1; |
1176 | file_size = 0; |
1177 | do { |
1178 | b = zs->PktIn[i]; |
1179 | if ((b >= 0x30) && (b <= 0x39)) |
1180 | file_size = (file_size * 10) + b - 0x30; |
1181 | i++; |
1182 | } while ((b >= 0x30) && (b <= 0x39)); |
1183 | zs->file_size = file_size; |
1184 | |
1185 | /* file mtime */ |
1186 | p = (char *)zs->PktIn + i; |
1187 | zs->file_mtime = 0; |
1188 | if (*p) { |
1189 | ret = sscanf(p, "%lo%o", &modtime, &mode); |
1190 | if (ret >= 1) |
1191 | zs->file_mtime = modtime; |
1192 | } |
1193 | |
1194 | zs->Pos = 0; |
1195 | fseek(zs->file, 0, SEEK_SET); |
1196 | |
1197 | zs->ZState = Z_RecvData; |
1198 | ZStoHdr(zs, 0); |
1199 | |
1200 | /* set timeout for data */ |
1201 | ZResetTimeout(zs, zs->TimeOut); |
1202 | |
1203 | return true; |
1204 | } |
1205 | |
1206 | bool |
1207 | ZWriteData(struct zmodem_session *zs) |
1208 | { |
1209 | short i; |
1210 | unsigned char b; |
1211 | |
1212 | if (zs->ZState != Z_RecvData) { |
1213 | #ifdef ZMODEM_DEBUG |
1214 | logger_printf("[%s] ZWriteData: state != RecvData", state_name(zs)); |
1215 | #endif |
1216 | return false; |
1217 | } |
1218 | |
1219 | zs->TimeOutAt = 0; |
1220 | |
1221 | if (zs->BinFlag) |
1222 | fwrite(zs->PktIn, zs->PktInPtr, 1, zs->file); |
1223 | else |
1224 | for (i = 0; i <= zs->PktInPtr - 1; i++) { |
1225 | b = zs->PktIn[i]; |
1226 | if ((b == 0x0A) && (!zs->CRRecv)) |
1227 | fwrite("\015", 1, 1, zs->file); |
1228 | if (zs->CRRecv && (b != 0x0A)) |
1229 | fwrite("\012", 1, 1, zs->file); |
1230 | zs->CRRecv = b == 0x0D; |
1231 | fwrite(&b, 1, 1, zs->file); |
1232 | } |
1233 | |
1234 | #ifdef ZMODEM_DEBUG |
1235 | logger_printf("[%s] ZWriteData: wrote %d byte(s) at %ld", |
1236 | state_name(zs), zs->PktInPtr, zs->Pos); |
1237 | #endif |
1238 | |
1239 | zs->Pos += zs->PktInPtr; |
1240 | fseek(zs->file, zs->Pos, SEEK_SET); |
1241 | ZStoHdr(zs, zs->Pos); |
1242 | |
1243 | /* set timeout for data */ |
1244 | ZResetTimeout(zs, zs->TimeOut); |
1245 | |
1246 | return true; |
1247 | } |
1248 | |
1249 | void |
1250 | ZCheckData(struct zmodem_session *zs) |
1251 | { |
1252 | bool ok; |
1253 | |
1254 | /* check CRC */ |
1255 | if ((zs->CRC32 && zs->CRC3 != 0xDEBB20E3) || |
1256 | (!zs->CRC32 && zs->CRC != 0)) { |
1257 | #ifdef ZMODEM_DEBUG |
1258 | logger_printf("[%s] ZCheckData: CRC%s failed", state_name(zs), |
1259 | zs->CRC32 ? "32" : "16"); |
1260 | #endif |
1261 | switch (zs->ZState) { |
1262 | case Z_RecvInit: |
1263 | case Z_RecvInit2: |
1264 | ZSendNAK(zs); |
1265 | break; |
1266 | case Z_RecvData: |
1267 | ZSendRPOS(zs); |
1268 | break; |
1269 | } |
1270 | zs->ZPktState = Z_PktGetPAD; |
1271 | return; |
1272 | } |
1273 | |
1274 | /* parse data */ |
1275 | switch (zs->RxType) { |
1276 | case ZSINIT: |
1277 | ok = ZParseSInit(zs); |
1278 | break; |
1279 | case ZFILE: |
1280 | ok = ZParseFile(zs); |
1281 | break; |
1282 | case ZDATA: |
1283 | ok = ZWriteData(zs); |
1284 | break; |
1285 | default: |
1286 | ok = false; |
1287 | } |
1288 | |
1289 | if (!ok) { |
1290 | #ifdef ZMODEM_DEBUG |
1291 | logger_printf("[%s] ZCheckData: bad RxType %s, skipping", |
1292 | state_name(zs), hdrtype_name(zs->RxType)); |
1293 | #endif |
1294 | zs->ZPktState = Z_PktGetPAD; |
1295 | zs->ZState = Z_SendSkip; |
1296 | ZSendSkip(zs); |
1297 | return; |
1298 | } |
1299 | |
1300 | if (zs->RxType == ZFILE) |
1301 | ZShHdr(zs, ZRPOS); |
1302 | |
1303 | /* next state */ |
1304 | switch (zs->TERM) { |
1305 | case ZCRCE: |
1306 | zs->ZPktState = Z_PktGetPAD; |
1307 | break; |
1308 | case ZCRCG: |
1309 | zs->ZPktState = Z_PktGetData; |
1310 | break; |
1311 | case ZCRCQ: |
1312 | zs->ZPktState = Z_PktGetData; |
1313 | if (zs->RxType != ZFILE) |
1314 | ZShHdr(zs, ZACK); |
1315 | break; |
1316 | case ZCRCW: |
1317 | zs->ZPktState = Z_PktGetPAD; |
1318 | if (zs->RxType != ZFILE) |
1319 | ZShHdr(zs, ZACK); |
1320 | break; |
1321 | default: |
1322 | zs->ZPktState = Z_PktGetPAD; |
1323 | } |
1324 | |
1325 | #ifdef ZMODEM_DEBUG |
1326 | logger_printf("[%s] ZCheckData: TERM %s", state_name(zs), |
1327 | hdrtype_name(zs->TERM)); |
1328 | #endif |
1329 | |
1330 | if (zs->ZPktState == Z_PktGetData) { |
1331 | zs->Quoted = false; |
1332 | zs->CRC = 0; |
1333 | zs->CRC3 = 0xFFFFFFFF; |
1334 | zs->PktInPtr = 0; |
1335 | zs->PktInCount = 0; |
1336 | } |
1337 | } |
1338 | |
1339 | bool |
1340 | ZParse(struct zmodem_session *zs) |
1341 | { |
1342 | unsigned char b; |
1343 | short c; |
1344 | |
1345 | do { |
1346 | /* Send packet */ |
1347 | if (zs->Sending) { |
1348 | c = 1; |
1349 | while ((c > 0) && (zs->PktOutCount > 0)) { |
1350 | c = session_output(zs->session, |
1351 | (const char *)&(zs->PktOut[zs->PktOutPtr]), |
1352 | zs->PktOutCount); |
1353 | zs->PktOutPtr = zs->PktOutPtr + c; |
1354 | zs->PktOutCount = zs->PktOutCount - c; |
1355 | } |
1356 | if (zs->PktOutCount <= 0) |
1357 | zs->Sending = false; |
1358 | if ((zs->ZMode == IdZReceive) && (zs->PktOutCount > 0)) |
1359 | return true; |
1360 | } |
1361 | |
1362 | c = ZRead1Byte(zs, &b); |
1363 | while (c > 0) { |
1364 | if (zs->ZState == Z_RecvFIN) { |
1365 | if (b == 'O') |
1366 | zs->CanCount--; |
1367 | if (zs->CanCount <= 0) { |
1368 | zs->ZState = Z_End; |
1369 | return false; |
1370 | } |
1371 | } else { |
1372 | switch (b) { |
1373 | case ZDLE: |
1374 | zs->CanCount--; |
1375 | if (zs->CanCount <= 0) { |
1376 | zs->ZState = Z_End; |
1377 | return false; |
1378 | } |
1379 | break; |
1380 | default: |
1381 | zs->CanCount = 5; |
1382 | } |
1383 | } |
1384 | |
1385 | switch (zs->ZPktState) { |
1386 | case Z_PktGetPAD: |
1387 | switch (b) { |
1388 | case ZPAD: |
1389 | zs->ZPktState = Z_PktGetDLE; |
1390 | break; |
1391 | } |
1392 | break; |
1393 | case Z_PktGetDLE: |
1394 | switch (b) { |
1395 | case ZPAD: |
1396 | break; |
1397 | case ZDLE: |
1398 | zs->ZPktState = Z_PktHdrFrm; |
1399 | break; |
1400 | default: |
1401 | zs->ZPktState = Z_PktGetPAD; |
1402 | } |
1403 | break; |
1404 | case Z_PktHdrFrm: /* Get header format type */ |
1405 | switch (b) { |
1406 | case ZBIN: |
1407 | zs->CRC32 = false; |
1408 | zs->PktInCount = 7; |
1409 | zs->ZPktState = Z_PktGetBin; |
1410 | break; |
1411 | case ZHEX: |
1412 | zs->HexLo = false; |
1413 | zs->CRC32 = false; |
1414 | zs->PktInCount = 7; |
1415 | zs->ZPktState = Z_PktGetHex; |
1416 | break; |
1417 | case ZBIN32: |
1418 | zs->CRC32 = true; |
1419 | zs->PktInCount = 9; |
1420 | zs->ZPktState = Z_PktGetBin; |
1421 | break; |
1422 | default: |
1423 | zs->ZPktState = Z_PktGetPAD; |
1424 | } |
1425 | zs->Quoted = false; |
1426 | zs->PktInPtr = 0; |
1427 | break; |
1428 | case Z_PktGetBin: |
1429 | switch (b) { |
1430 | case ZDLE: |
1431 | zs->Quoted = true; |
1432 | break; |
1433 | default: |
1434 | if (zs->Quoted) { |
1435 | switch (b) { |
1436 | case ZRUB0: |
1437 | b = 0x7f; |
1438 | break; |
1439 | case ZRUB1: |
1440 | b = 0xff; |
1441 | break; |
1442 | default: |
1443 | b = b ^ 0x40; |
1444 | } |
1445 | zs->Quoted = false; |
1446 | } |
1447 | |
1448 | zs->PktIn[zs->PktInPtr] = b; |
1449 | zs->PktInPtr++; |
1450 | zs->PktInCount--; |
1451 | if (zs->PktInCount == 0) { |
1452 | zs->ZPktState = Z_PktGetPAD; |
1453 | if (ZCheckHdr(zs)) |
1454 | ZParseHdr(zs); |
1455 | } |
1456 | } |
1457 | break; |
1458 | case Z_PktGetHex: |
1459 | if (b <= '9') |
1460 | b = b - 0x30; |
1461 | else if ((b >= 'a') && (b <= 'f')) |
1462 | b = b - 0x57; |
1463 | else { |
1464 | zs->ZPktState = Z_PktGetPAD; |
1465 | return true; |
1466 | } |
1467 | |
1468 | if (zs->HexLo) { |
1469 | zs->PktIn[zs->PktInPtr] = |
1470 | zs->PktIn[zs->PktInPtr] + b; |
1471 | zs->HexLo = false; |
1472 | zs->PktInPtr++; |
1473 | zs->PktInCount--; |
1474 | if (zs->PktInCount <= 0) { |
1475 | zs->ZPktState = Z_PktGetHexEOL; |
1476 | zs->PktInCount = 2; |
1477 | } |
1478 | } else { |
1479 | zs->PktIn[zs->PktInPtr] = b << 4; |
1480 | zs->HexLo = true; |
1481 | } |
1482 | break; |
1483 | case Z_PktGetHexEOL: |
1484 | zs->PktInCount--; |
1485 | if (zs->PktInCount <= 0) { |
1486 | zs->ZPktState = Z_PktGetPAD; |
1487 | if (ZCheckHdr(zs)) |
1488 | ZParseHdr(zs); |
1489 | } |
1490 | break; |
1491 | case Z_PktGetData: |
1492 | switch (b) { |
1493 | case ZDLE: |
1494 | zs->Quoted = true; |
1495 | break; |
1496 | default: |
1497 | if (zs->Quoted) { |
1498 | switch (b) { |
1499 | case ZCRCE: |
1500 | case ZCRCG: |
1501 | case ZCRCQ: |
1502 | case ZCRCW: |
1503 | zs->TERM = b; |
1504 | if (zs->CRC32) |
1505 | zs->PktInCount = 4; |
1506 | else |
1507 | zs->PktInCount = 2; |
1508 | zs->ZPktState = Z_PktGetCRC; |
1509 | break; |
1510 | case ZRUB0: |
1511 | b = 0x7F; |
1512 | break; |
1513 | case ZRUB1: |
1514 | b = 0xFF; |
1515 | break; |
1516 | default: |
1517 | b = b ^ 0x40; |
1518 | } |
1519 | zs->Quoted = false; |
1520 | } |
1521 | |
1522 | if (zs->CRC32) |
1523 | zs->CRC3 = UpdateCRC32(b, zs->CRC3); |
1524 | else |
1525 | zs->CRC = UpdateCRC(b, zs->CRC); |
1526 | |
1527 | if (zs->ZPktState == Z_PktGetData) { |
1528 | if (zs->PktInPtr < ZMODEM_BLOCK_SIZE) { |
1529 | zs->PktIn[zs->PktInPtr] = b; |
1530 | zs->PktInPtr++; |
1531 | } else |
1532 | zs->ZPktState = Z_PktGetPAD; |
1533 | } |
1534 | } |
1535 | break; |
1536 | case Z_PktGetCRC: |
1537 | switch (b) { |
1538 | case ZDLE: |
1539 | zs->Quoted = true; |
1540 | break; |
1541 | default: |
1542 | if (zs->Quoted) { |
1543 | switch (b) { |
1544 | case ZRUB0: |
1545 | b = 0x7F; |
1546 | break; |
1547 | case ZRUB1: |
1548 | b = 0xFF; |
1549 | break; |
1550 | default: |
1551 | b = b ^ 0x40; |
1552 | } |
1553 | zs->Quoted = false; |
1554 | } |
1555 | if (zs->CRC32) |
1556 | zs->CRC3 = UpdateCRC32(b, zs->CRC3); |
1557 | else |
1558 | zs->CRC = UpdateCRC(b, zs->CRC); |
1559 | zs->PktInCount--; |
1560 | if (zs->PktInCount <= 0) |
1561 | ZCheckData(zs); |
1562 | } |
1563 | break; |
1564 | } |
1565 | c = ZRead1Byte(zs, &b); |
1566 | } |
1567 | |
1568 | if (!zs->Sending) |
1569 | switch (zs->ZState) { |
1570 | case Z_SendInitHdr: |
1571 | ZSendInitDat(zs); |
1572 | break; |
1573 | case Z_SendFileHdr: |
1574 | ZSendFileDat(zs); |
1575 | break; |
1576 | case Z_SendDataHdr: |
1577 | case Z_SendDataDat: |
1578 | ZSendDataDat(zs); |
1579 | break; |
1580 | case Z_Cancel: |
1581 | zs->ZState = Z_End; |
1582 | break; |
1583 | } |
1584 | |
1585 | if (zs->Sending && (zs->PktOutCount > 0)) |
1586 | return true; |
1587 | } while (zs->Sending); |
1588 | |
1589 | if (zs->ZState == Z_End) |
1590 | return false; |
1591 | |
1592 | return true; |
1593 | } |
1594 | |
1595 | void |
1596 | ZCancel(struct zmodem_session *zs) |
1597 | { |
1598 | #ifdef ZMODEM_DEBUG |
1599 | logger_printf("[%s] ZCancel", state_name(zs)); |
1600 | #endif |
1601 | |
1602 | ZSendCancel(zs); |
1603 | } |
1604 | |
1605 | void |
1606 | ZDestroy(struct zmodem_session *zs) |
1607 | { |
1608 | #ifdef ZMODEM_DEBUG |
1609 | logger_printf("[%s] ZDestroy", state_name(zs)); |
1610 | #endif |
1611 | |
1612 | if (zs->file) |
1613 | fclose(zs->file); |
1614 | if (zs->upload_file_path) |
1615 | xfree(&zs->upload_file_path); |
1616 | xfree(&zs); |
1617 | } |