forked from Stichting-MINIX-Research-Foundation/minix
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathrz.c
More file actions
1527 lines (1410 loc) · 31.3 KB
/
Copy pathrz.c
File metadata and controls
1527 lines (1410 loc) · 31.3 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
#define VERSION "2.03 05-17-88"
#define PUBDIR "/usr/spool/uucppublic"
/*% cc -compat -M2 -Ox -K -i -DMD -DOMEN % -o rz; size rz;
<-xtx-*> cc386 -Ox -DMD -DOMEN -DSEGMENTS=8 rz.c -o $B/rz; size $B/rz
*
* rz.c By Chuck Forsberg
*
* cc -O rz.c -o rz USG (3.0) Unix
* cc -O -DV7 rz.c -o rz Unix V7, BSD 2.8 - 4.3
*
* ln rz rb; ln rz rx For either system
*
* ln rz /usr/bin/rzrmail For remote mail. Make this the
* login shell. rzrmail then calls
* rmail(1) to deliver mail.
*
* To compile on VMS:
*
* define LNK$LIBRARY SYS$LIBRARY:VAXCRTL.OLB
* cc rz.c
* cc vvmodem.c
* link rz,vvmodem
* rz :== $disk:[username.subdir]rz.exe
*
*
* Unix is a trademark of Western Electric Company
*
* A program for Unix to receive files and commands from computers running
* Professional-YAM, PowerCom, YAM, IMP, or programs supporting XMODEM.
* rz uses Unix buffered input to reduce wasted CPU time.
*
* Iff the program is invoked by rzCOMMAND, output is piped to
* "COMMAND filename" (Unix only)
*
* Some systems (Venix, Coherent, Regulus) may not support tty raw mode
* read(2) the same way as Unix. ONEREAD must be defined to force one
* character reads for these systems. Added 7-01-84 CAF
*
* Alarm signal handling changed to work with 4.2 BSD 7-15-84 CAF
*
* BIX added 6-30-87 to support BIX(TM) upload protocol used by the
* Byte Information Exchange.
*
* NFGVMIN Updated 2-18-87 CAF for Xenix systems where c_cc[VMIN]
* doesn't work properly (even though it compiles without error!),
*
* SEGMENTS=n added 2-21-88 as a model for CP/M programs
* for CP/M-80 systems that cannot overlap modem and disk I/O.
*
* VMS flavor hacks begin with rz version 2.00
*
* -DMD may be added to compiler command line to compile in
* Directory-creating routines from Public Domain TAR by John Gilmore
*
* HOWMANY may be tuned for best performance
*
* USG UNIX (3.0) ioctl conventions courtesy Jeff Martin
*/
#include <sys/types.h>
#ifdef vax11c
#include <types.h>
#include <stat.h>
#define LOGFILE "rzlog.tmp"
#define OS "VMS"
#define BUFREAD
extern int errno;
#define SS_NORMAL SS$_NORMAL
#else
/* Not vax11c */
#define SS_NORMAL 0
#define LOGFILE "/tmp/rzlog"
#endif
#include <time.h>
#include <ctype.h>
#include <errno.h>
#include <signal.h>
#include <setjmp.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <utime.h>
#include <stdio.h>
#include <stdarg.h>
#define OK 0
#define FALSE 0
#define TRUE 1
#undef ERROR
#define ERROR (-1)
long getfree(void);
void alrm(int sig );
int main(int argc , char *argv []);
int usage(void);
int wcreceive(int argc , char **argp );
int wcrxpn(char *rpn );
int wcrx(void);
int wcgetsec(char *rxbuf , int maxtime );
int readline(int timeout );
void purgeline(void);
int procheader(char *name );
int make_dirs(char *pathname );
int makedir(char *dpath , int dmode );
int putsec(char *buf , int n );
void sendline(int c );
void flushmo(void);
void uncaps(char *s );
int IsAnyLower(char *s );
char *substr(char *s , char *t );
void zperr();
void canit(void);
void report(int sct );
void chkinvok(char *s );
void checkpath(char *name );
int tryz(void);
int rzfiles(void);
int rzfile(void);
void zmputs(char *s );
int closeit(void);
void ackbibi(void);
void bttyout(int c );
int sys2(char *s );
void exec2(char *s );
/*
* Debugging information output interface routine
*/
void vfile(const char *s, ...);
/*
* Max value for HOWMANY is 255.
* A larger value reduces system overhead but may evoke kernel bugs.
* 133 corresponds to an XMODEM/CRC sector
*/
#ifndef HOWMANY
#define HOWMANY 133
#endif
/* Ward Christensen / CP/M parameters - Don't change these! */
#define ENQ 005
#define CAN ('X'&037)
#define XOFF ('s'&037)
#define XON ('q'&037)
#define SOH 1
#define STX 2
#define EOT 4
#define ACK 6
#define NAK 025
#define CPMEOF 032
#define WANTCRC 0103 /* send C not NAK to get crc not checksum */
#define TIMEOUT (-2)
#define RCDO (-3)
#define ERRORMAX 5
#define RETRYMAX 5
#define WCEOT (-10)
#define PATHLEN 257 /* ready for 4.2 bsd ? */
#define UNIXFILE 0xF000 /* The S_IFMT file mask bit for stat */
int Zmodem=0; /* ZMODEM protocol requested */
int Nozmodem = 0; /* If invoked as "rb" */
unsigned Baudrate = 2400;
#ifdef vax11c
#include "vrzsz.c" /* most of the system dependent stuff here */
#else
#include "rbsb.c" /* most of the system dependent stuff here */
#endif
#include "crctab.c"
FILE *fout;
/*
* Routine to calculate the free bytes on the current file system
* ~0 means many free bytes (unknown)
*/
long getfree()
{
return(~0L); /* many free bytes ... */
}
int Lastrx;
int Crcflg;
int Firstsec;
int Eofseen; /* indicates cpm eof (^Z) has been received */
int errors;
int Restricted=0; /* restricted; no /.. or ../ in filenames */
#ifdef ONEREAD
/* Sorry, Regulus and some others don't work right in raw mode! */
int Readnum = 1; /* Number of bytes to ask for in read() from modem */
#else
int Readnum = HOWMANY; /* Number of bytes to ask for in read() from modem */
#endif
#define DEFBYTL 2000000000L /* default rx file size */
long Bytesleft; /* number of bytes of incoming file left */
long Modtime; /* Unix style mod time for incoming file */
int Filemode; /* Unix style mode for incoming file */
char Pathname[PATHLEN];
char *Progname; /* the name by which we were called */
int Batch=0;
int Topipe=0;
int MakeLCPathname=TRUE; /* make received pathname lower case */
int Verbose=0;
int Quiet=0; /* overrides logic that would otherwise set verbose */
int Nflag = 0; /* Don't really transfer files */
int Rxclob=FALSE; /* Clobber existing file */
int Rxbinary=FALSE; /* receive all files in bin mode */
int Rxascii=FALSE; /* receive files in ascii (translate) mode */
int Thisbinary; /* current file is to be received in bin mode */
int Blklen; /* record length of received packets */
#ifdef SEGMENTS
int chinseg = 0; /* Number of characters received in this data seg */
char secbuf[1+(SEGMENTS+1)*1024];
#else
char secbuf[1025];
#endif
char linbuf[HOWMANY];
int Lleft=0; /* number of characters in linbuf */
time_t timep[2];
char Lzmanag; /* Local file management request */
char zconv; /* ZMODEM file conversion request */
char zmanag; /* ZMODEM file management request */
char ztrans; /* ZMODEM file transport request */
int Zctlesc; /* Encode control characters */
int Zrwindow = 1400; /* RX window size (controls garbage count) */
jmp_buf tohere; /* For the interrupt on RX timeout */
#define xsendline(c) sendline(c)
#include "zm.c"
int tryzhdrtype=ZRINIT; /* Header type to send corresponding to Last rx close */
void alrm(sig)
int sig;
{
longjmp(tohere, -1);
}
/* called by signal interrupt or terminate to clean things up */
void bibi(int n)
{
if (Zmodem)
zmputs(Attn);
canit(); mode(0);
fprintf(stderr, "rz: caught signal %d; exiting\n", n);
cucheck();
exit(128+n);
}
int main(int argc, char *argv[])
{
register char *cp;
register int npats;
char *virgin, **patts;
int exitcode = 0;
Rxtimeout = 100;
setbuf(stderr, (char *)NULL);
if ((cp=getenv("SHELL")) && (substr(cp, "rsh") || substr(cp, "rksh")))
Restricted=TRUE;
from_cu();
#ifdef vax11c
Progname = virgin = "rz";
#else
chkinvok(virgin=argv[0]); /* if called as [-]rzCOMMAND set flag */
#endif
npats = 0;
while (--argc) {
cp = *++argv;
if (*cp == '-') {
while( *++cp) {
switch(*cp) {
case '\\':
cp[1] = toupper(cp[1]); continue;
case '+':
Lzmanag = ZMAPND; break;
case 'a':
Rxascii=TRUE; break;
case 'b':
Rxbinary=TRUE; break;
case 'c':
Crcflg=TRUE; break;
#ifndef vax11c
case 'D':
Nflag = TRUE; break;
#endif
case 'e':
Zctlesc = 1; break;
case 'p':
Lzmanag = ZMPROT; break;
case 'q':
Quiet=TRUE; Verbose=0; break;
case 't':
if (--argc < 1) {
usage();
}
Rxtimeout = atoi(*++argv);
if (Rxtimeout<10 || Rxtimeout>1000)
usage();
break;
case 'w':
if (--argc < 1) {
usage();
}
Zrwindow = atoi(*++argv);
break;
case 'u':
MakeLCPathname=FALSE; break;
case 'v':
++Verbose; break;
case 'y':
Rxclob=TRUE; break;
default:
usage();
}
}
}
else if ( !npats && argc>0) {
if (argv[0][0]) {
npats=argc;
patts=argv;
}
}
}
if (npats > 1)
usage();
if (Batch && npats)
usage();
if (Verbose) {
if (freopen(LOGFILE, "a", stderr)==NULL) {
printf("Can't open log file %s\n",LOGFILE);
exit(0200);
}
setbuf(stderr, (char *)NULL);
fprintf(stderr, "argv[0]=%s Progname=%s\n", virgin, Progname);
}
if (Fromcu && !Quiet) {
if (Verbose == 0)
Verbose = 2;
}
vfile("%s %s for %s\n", Progname, VERSION, OS);
mode(1);
if (signal(SIGINT, bibi) == SIG_IGN) {
signal(SIGINT, SIG_IGN); signal(SIGKILL, SIG_IGN);
}
else {
signal(SIGINT, bibi); signal(SIGKILL, bibi);
}
signal(SIGTERM, bibi);
if (wcreceive(npats, patts)==ERROR) {
exitcode=0200;
canit();
}
mode(0);
vfile("exitcode = %d\n",exitcode);
if (exitcode && !Zmodem) /* bellow again with all thy might. */
canit();
if (exitcode)
cucheck();
if (Verbose) putc('\n', stderr);
exit(exitcode ? exitcode:SS_NORMAL);
}
int usage()
{
cucheck();
#ifdef vax11c
fprintf(stderr,"Usage: rz [-abeuvy]\n");
#else
fprintf(stderr,"Usage: rz [-abeuvy] (ZMODEM)\n");
fprintf(stderr,"or rb [-abuvy] (YMODEM)\n");
fprintf(stderr,"or rx [-abcv] file (XMODEM or XMODEM-1k)\n");
#endif
fprintf(stderr," -a ASCII transfer (strip CR)\n");
fprintf(stderr," -b Binary transfer for all files\n");
#ifndef vax11c
fprintf(stderr," -c Use 16 bit CRC (XMODEM)\n");
#endif
fprintf(stderr," -e Escape control characters (ZMODEM)\n");
fprintf(stderr," -v Verbose more v's give more info\n");
fprintf(stderr," -y Yes, clobber existing file if any\n");
fprintf(stderr,"%s %s for %s by Chuck Forsberg, Omen Technology INC\n",
Progname, VERSION, OS);
fprintf(stderr, "\t\t\042The High Reliability Software\042\n");
exit(SS_NORMAL);
}
void vfile(const char *string, ...)
{
if (Verbose > 2) {
va_list args;
va_start(args, string);
vfprintf(stderr, string, args);
va_end(args);
fprintf(stderr, "\n");
}
}
/*
* Let's receive something already.
*/
char *rbmsg =
"%s ready. To begin transfer, type \"%s file ...\" to your modem program\r\n\n";
int wcreceive(int argc, char **argp)
{
register int c;
if (Batch || argc==0) {
Crcflg=1;
if ( !Quiet)
fprintf(stderr, rbmsg, Progname, Nozmodem?"sb":"sz");
if ((c=tryz())) {
if (c == ZCOMPL)
return OK;
if (c == ERROR)
goto fubar;
c = rzfiles();
if (c)
goto fubar;
} else {
for (;;) {
if (wcrxpn(secbuf)== ERROR)
goto fubar;
if (secbuf[0]==0)
return OK;
if (procheader(secbuf) == ERROR)
goto fubar;
if (wcrx()==ERROR)
goto fubar;
}
}
} else {
Bytesleft = DEFBYTL; Filemode = 0; Modtime = 0L;
procheader(""); strcpy(Pathname, *argp); checkpath(Pathname);
fprintf(stderr, "\nrz: ready to receive %s\r\n", Pathname);
if ((fout=fopen(Pathname, "w")) == NULL)
return ERROR;
if (wcrx()==ERROR)
goto fubar;
}
return OK;
fubar:
canit();
#ifndef vax11c
if (Topipe && fout) {
pclose(fout); return ERROR;
}
#endif
if (fout)
fclose(fout);
#ifndef vax11c
if (Restricted) {
unlink(Pathname);
fprintf(stderr, "\r\nrz: %s removed.\r\n", Pathname);
}
#endif
return ERROR;
}
/*
* Fetch a pathname from the other end as a C ctyle ASCIZ string.
* Length is indeterminate as long as less than Blklen
* A null string represents no more files (YMODEM)
*
* Parameter rpn is for receiving a pathname
*/
int wcrxpn(char *rpn)
{
register int c;
#ifdef NFGVMIN
readline(1);
#else
purgeline();
#endif
et_tu:
Firstsec=TRUE; Eofseen=FALSE;
sendline(Crcflg?WANTCRC:NAK);
Lleft=0; /* Do read next time ... */
while ((c = wcgetsec(rpn, 100)) != 0) {
if (c == WCEOT) {
zperr( "Pathname fetch returned %d", c);
sendline(ACK);
Lleft=0; /* Do read next time ... */
readline(1);
goto et_tu;
}
return ERROR;
}
sendline(ACK);
return OK;
}
/*
* Adapted from CMODEM13.C, written by
* Jack M. Wierda and Roderick W. Hart
*/
int wcrx()
{
register int sectnum, sectcurr;
register char sendchar;
int cblklen; /* bytes to dump this block */
Firstsec=TRUE;sectnum=0; Eofseen=FALSE;
sendchar=Crcflg?WANTCRC:NAK;
for (;;) {
sendline(sendchar); /* send it now, we're ready! */
Lleft=0; /* Do read next time ... */
sectcurr=wcgetsec(secbuf, (sectnum&0177)?50:130);
report(sectcurr);
if (sectcurr==((sectnum+1) &0377)) {
sectnum++;
cblklen = Bytesleft>Blklen ? Blklen:Bytesleft;
if (putsec(secbuf, cblklen)==ERROR)
return ERROR;
if ((Bytesleft-=cblklen) < 0)
Bytesleft = 0;
sendchar=ACK;
}
else if (sectcurr==(sectnum&0377)) {
zperr( "Received dup Sector");
sendchar=ACK;
}
else if (sectcurr==WCEOT) {
if (closeit())
return ERROR;
sendline(ACK);
Lleft=0; /* Do read next time ... */
return OK;
}
else if (sectcurr==ERROR)
return ERROR;
else {
zperr( "Sync Error");
return ERROR;
}
}
}
/*
* Wcgetsec fetches a Ward Christensen type sector.
* Returns sector number encountered or ERROR if valid sector not received,
* or CAN CAN received
* or WCEOT if eot sector
* time is timeout for first char, set to 4 seconds thereafter
***************** NO ACK IS SENT IF SECTOR IS RECEIVED OK **************
* (Caller must do that when he is good and ready to get next sector)
*/
int wcgetsec(char *rxbuf, int maxtime)
{
register int checksum, wcj, firstch;
register unsigned short oldcrc;
register char *p;
int sectcurr;
for (Lastrx=errors=0; errors<RETRYMAX; errors++) {
if ((firstch=readline(maxtime))==STX) {
Blklen=1024; goto get2;
}
if (firstch==SOH) {
Blklen=128;
get2:
sectcurr=readline(1);
if ((sectcurr+(oldcrc=readline(1)))==0377) {
oldcrc=checksum=0;
for (p=rxbuf,wcj=Blklen; --wcj>=0; ) {
if ((firstch=readline(1)) < 0)
goto bilge;
oldcrc=updcrc(firstch, oldcrc);
checksum += (*p++ = firstch);
}
if ((firstch=readline(1)) < 0)
goto bilge;
if (Crcflg) {
oldcrc=updcrc(firstch, oldcrc);
if ((firstch=readline(1)) < 0)
goto bilge;
oldcrc=updcrc(firstch, oldcrc);
if (oldcrc & 0xFFFF)
zperr( "CRC");
else {
Firstsec=FALSE;
return sectcurr;
}
}
else if (((checksum-firstch)&0377)==0) {
Firstsec=FALSE;
return sectcurr;
}
else
zperr( "Checksum");
}
else
zperr("Sector number garbled");
}
/* make sure eot really is eot and not just mixmash */
#ifdef NFGVMIN
else if (firstch==EOT && readline(1)==TIMEOUT)
return WCEOT;
#else
else if (firstch==EOT && Lleft==0)
return WCEOT;
#endif
else if (firstch==CAN) {
if (Lastrx==CAN) {
zperr( "Sender CANcelled");
return ERROR;
} else {
Lastrx=CAN;
continue;
}
}
else if (firstch==TIMEOUT) {
if (Firstsec)
goto humbug;
bilge:
zperr( "TIMEOUT");
}
else
zperr( "Got 0%o sector header", firstch);
humbug:
Lastrx=0;
while(readline(1)!=TIMEOUT)
;
if (Firstsec) {
sendline(Crcflg?WANTCRC:NAK);
Lleft=0; /* Do read next time ... */
} else {
maxtime=40; sendline(NAK);
Lleft=0; /* Do read next time ... */
}
}
/* try to stop the bubble machine. */
canit();
return ERROR;
}
#ifndef vax11c
/*
* This version of readline is reasoably well suited for
* reading many characters.
* (except, currently, for the Regulus version!)
*
* timeout is in tenths of seconds
*/
int readline(int timeout)
{
register int n;
static char *cdq; /* pointer for removing chars from linbuf */
if (--Lleft >= 0) {
if (Verbose > 8) {
fprintf(stderr, "%02x ", *cdq&0377);
}
return (*cdq++ & 0377);
}
n = timeout/10;
if (n < 2)
n = 3;
if (Verbose > 5)
fprintf(stderr, "Calling read: alarm=%d Readnum=%d ",
n, Readnum);
if (setjmp(tohere)) {
#ifdef TIOCFLUSH
/* ioctl(iofd, TIOCFLUSH, 0); */
#endif
Lleft = 0;
if (Verbose>1)
fprintf(stderr, "Readline:TIMEOUT\n");
return TIMEOUT;
}
signal(SIGALRM, alrm); alarm(n);
Lleft=read(iofd, cdq=linbuf, Readnum);
alarm(0);
if (Verbose > 5) {
fprintf(stderr, "Read returned %d bytes\n", Lleft);
}
if (Lleft < 1)
return TIMEOUT;
--Lleft;
if (Verbose > 8) {
fprintf(stderr, "%02x ", *cdq&0377);
}
return (*cdq++ & 0377);
}
/*
* Purge the modem input queue of all characters
*/
void purgeline()
{
Lleft = 0;
#ifdef USG
ioctl(iofd, TCFLSH, 0);
#else
lseek(iofd, 0L, 2);
#endif
}
#endif
/*
* Process incoming file information header
*/
int procheader(char *name)
{
register char *openmode, *p;
/* set default parameters and overrides */
openmode = "w";
Thisbinary = (!Rxascii) || Rxbinary;
if (Lzmanag)
zmanag = Lzmanag;
/*
* Process ZMODEM remote file management requests
*/
if (!Rxbinary && zconv == ZCNL) /* Remote ASCII override */
Thisbinary = 0;
if (zconv == ZCBIN) /* Remote Binary override */
Thisbinary = TRUE;
else if (zmanag == ZMAPND)
openmode = "a";
#ifndef BIX
/* Check for existing file */
if (!Rxclob && (zmanag&ZMMASK) != ZMCLOB && (fout=fopen(name, "r"))) {
fclose(fout); return ERROR;
}
#endif
Bytesleft = DEFBYTL; Filemode = 0; Modtime = 0L;
p = name + 1 + strlen(name);
if (*p) { /* file coming from Unix or DOS system */
sscanf(p, "%ld%lo%o", &Bytesleft, &Modtime, &Filemode);
#ifndef vax11c
if (Filemode & UNIXFILE)
++Thisbinary;
#endif
if (Verbose) {
fprintf(stderr, "\nIncoming: %s %ld %lo %o\n",
name, Bytesleft, Modtime, Filemode);
}
}
#ifdef BIX
if ((fout=fopen("scratchpad", openmode)) == NULL)
return ERROR;
return OK;
#else
else { /* File coming from CP/M system */
for (p=name; *p; ++p) /* change / to _ */
if ( *p == '/')
*p = '_';
if ( *--p == '.') /* zap trailing period */
*p = 0;
}
#ifndef vax11c
if (!Zmodem && MakeLCPathname && !IsAnyLower(name)
&& !(Filemode&UNIXFILE))
uncaps(name);
#endif
if (Topipe > 0) {
sprintf(Pathname, "%s %s", Progname+2, name);
if (Verbose)
fprintf(stderr, "Topipe: %s %s\n",
Pathname, Thisbinary?"BIN":"ASCII");
#ifndef vax11c
if ((fout=popen(Pathname, "w")) == NULL)
return ERROR;
#endif
} else {
strcpy(Pathname, name);
if (Verbose) {
fprintf(stderr, "Receiving %s %s %s\n",
name, Thisbinary?"BIN":"ASCII", openmode);
}
checkpath(name);
if (Nflag)
name = "/dev/null";
#ifndef vax11c
#ifdef OMEN
if (name[0] == '!' || name[0] == '|') {
if ( !(fout = popen(name+1, "w"))) {
return ERROR;
}
Topipe = -1; return(OK);
}
#endif
#endif
#ifdef MD
fout = fopen(name, openmode);
if ( !fout)
if (make_dirs(name))
fout = fopen(name, openmode);
#else
fout = fopen(name, openmode);
#endif
if ( !fout)
return ERROR;
}
return OK;
#endif /* BIX */
}
#ifdef MD
/*
* Directory-creating routines from Public Domain TAR by John Gilmore
*/
/*
* After a file/link/symlink/dir creation has failed, see if
* it's because some required directory was not present, and if
* so, create all required dirs.
*/
int make_dirs(char *pathname)
{
register char *p; /* Points into path */
int madeone = 0; /* Did we do anything yet? */
int save_errno = errno; /* Remember caller's errno */
char *strchr();
if (errno != ENOENT)
return 0; /* Not our problem */
for (p = strchr(pathname, '/'); p != NULL; p = strchr(p+1, '/')) {
/* Avoid mkdir of empty string, if leading or double '/' */
if (p == pathname || p[-1] == '/')
continue;
/* Avoid mkdir where last part of path is '.' */
if (p[-1] == '.' && (p == pathname+1 || p[-2] == '/'))
continue;
*p = 0; /* Truncate the path there */
if ( !makedir(pathname, 0777)) { /* Try to create it as a dir */
vfile("Made directory %s\n", pathname);
madeone++; /* Remember if we made one */
*p = '/';
continue;
}
*p = '/';
if (errno == EEXIST) /* Directory already exists */
continue;
/*
* Some other error in the makedir. We return to the caller.
*/
break;
}
errno = save_errno; /* Restore caller's errno */
return madeone; /* Tell them to retry if we made one */
}
#if (MD != 2)
#define TERM_SIGNAL(status) ((status) & 0x7F)
#define TERM_COREDUMP(status) (((status) & 0x80) != 0)
#define TERM_VALUE(status) ((status) >> 8)
/*
* Make a directory. Compatible with the mkdir() system call on 4.2BSD.
*/
int makedir(char *dpath, int dmode)
{
int cpid, status;
struct stat statbuf;
if (stat(dpath,&statbuf) == 0) {
errno = EEXIST; /* Stat worked, so it already exists */
return -1;
}
/* If stat fails for a reason other than non-existence, return error */
if (errno != ENOENT) return -1;
switch (cpid = fork()) {
case -1: /* Error in fork() */
return(-1); /* Errno is set already */
case 0: /* Child process */
/*
* Cheap hack to set mode of new directory. Since this
* child process is going away anyway, we zap its umask.
* FIXME, this won't suffice to set SUID, SGID, etc. on this
* directory. Does anybody care?
*/
status = umask(0); /* Get current umask */
status = umask(status | (0777 & ~dmode)); /* Set for mkdir */
execl("/bin/mkdir", "mkdir", dpath, (char *)0);
_exit(-1); /* Can't exec /bin/mkdir */
default: /* Parent process */
while (cpid != wait(&status)) ; /* Wait for kid to finish */
}
if (TERM_SIGNAL(status) != 0 || TERM_VALUE(status) != 0) {
errno = EIO; /* We don't know why, but */
return -1; /* /bin/mkdir failed */
}
return 0;
}
#endif /* MD != 2 */
#endif /* MD */
/*
* Putsec writes the n characters of buf to receive file fout.
* If not in binary mode, carriage returns, and all characters
* starting with CPMEOF are discarded.
*/
int putsec(char *buf, int n)
{
register char *p;
if (n == 0)
return OK;
if (Thisbinary) {
for (p=buf; --n>=0; )
putc( *p++, fout);
}
else {
if (Eofseen)
return OK;
for (p=buf; --n>=0; ++p ) {
if ( *p == '\r')
continue;
if (*p == CPMEOF) {
Eofseen=TRUE; return OK;
}
putc(*p ,fout);
}
}
return OK;
}
#ifndef vax11c
/*
* Send a character to modem. Small is beautiful.
*/
void sendline(int c)
{
char d;
d = c;
if (Verbose>6)
fprintf(stderr, "Sendline: %x\n", c);
write(1, &d, 1);
}
void flushmo() {}
#endif
/* make string s lower case */
void uncaps(char *s)
{
for ( ; *s; ++s)
if (isupper(*s))
*s = tolower(*s);
}
/*
* IsAnyLower returns TRUE if string s has lower case letters.
*/
int IsAnyLower(char *s)
{
for ( ; *s; ++s)
if (islower(*s))
return TRUE;
return FALSE;
}
/*