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
|
/*------------------------------
/* SOURCE FILE NAME: RTNEW1.C
/*------------------------------
/* 0 */
#include "rt.h"
#include "rt1.h"
#include "rt2.h"
#include "restpars.h" /*;AN000;4*/
#include "string.h"
#include "dos.h" /*;AN000;2*/
#include "comsub.h" /* common subroutine def'n */
#include "doscalls.h"
#include "error.h"
#define LAST_DIRBLOCK 0xffffffff /* !wrw */
BYTE got_first_fh; /* !wrw */
struct dir_block russ_dir_block; /* Current directory block /* !wrw */
extern BYTE backup_level; /* Tells which DOS version made the BACKUP*/ /*;AN000;3*/
struct file_header_new russ_file_header;/* Current file_header /* !wrw */
unsigned short tot_num_fh_read_in; /* Num FH read in so far /* !wrw */
unsigned short num_fh_in_buffer; /* Num FH currently in buff /* !wrw */
unsigned short num_fh_in_buf_processed; /* Number of FH in the buffer that have been processed /* !wrw */
struct file_header_new far *fheadnew; /* Global pointer to FH /* !wrw */
BYTE fileheader_length; /*;AN000;3 Length of a file header */
extern BYTE rtswitch;
extern BYTE control_flag;
extern BYTE control_flag2;
extern char far *control_buf_pointer;
extern unsigned control_file_handle;
extern WORD control_bufsize; /* !wrw */
/* 0 */
/***************** START OF SPECIFICATION ********************************
/*
/* SUBROUTINE NAME : findfile_new
/*
/* DESCRIPTIVE NAME : Find a file with matching file name from
/* the file CONTROL.xxx.
/*
/* FUNCTION: For new format only, search through all directory blocks
/* and all file headers until a file header with matched file
/* path, name and extension is found. also store information
/* into fhead and finfo if file is found which match the
/* filename and file extension specified in the command line.
/*
/* NOTES: Path name for comparison has to started with \ and end with \.
/*
/********************** END OF SPECIFICATIONS *******************************/
int findfile_new( finfo, found, done_searching, inpath,
infspec, dirptr, flptr, numentry, dir_path)
struct file_info *finfo;
WORD *found;
unsigned int *done_searching;
BYTE *inpath;
BYTE *infspec;
WORD far **dirptr;
WORD far **flptr;
unsigned int *numentry;
BYTE *dir_path;
{
struct dir_block far *dirblk;
char temp_path[MAXPATH];
char temp_fname[MAXFSPEC];
WORD i;
WORD rc;
dirblk = (struct dir_block far *)&russ_dir_block; /* !wrw */
fheadnew = (struct file_header_new far *)&russ_file_header; /* !wrw */
/******************************************************************/
/* search the directory block for the one that has the right path */
/*******************************************************************/
while ((*done_searching == FALSE) && (*found == FALSE))
{
temp_path[0] = '\\';
for (i = 0; i <= (MAXPATH-2); ++i)
temp_path[i+1] = dirblk->path[i];
temp_path[MAXPATH-1] = NULLC;
/*****************************/
/* While path does not match */
/*****************************/
while (pathmatch(inpath,temp_path) == FALSE)
{
if (dirblk->nextdb == LAST_DIRBLOCK) /* !wrw */
{
*found = FALSE;
*done_searching = TRUE;
break;
}
else
{
read_in_next_dirblock(); /* !wrw */
temp_path[0] = '\\';
for (i = 0; i <= (MAXPATH-2); ++i)
temp_path[i+1] = dirblk->path[i];
temp_path[MAXPATH-1] = NULLC;
continue;
}
/*end of if not last dirblk*/
} /*end while loop, searching for the right path in directory block*/
/*if done searching, break out of the big loop to exit*/
if (*done_searching == TRUE)
break;
/***************************************************/
/* directory block with correct path has been found*/
/***************************************************/
/*get the total number of file headers in the directory block*/
*numentry = (unsigned int)russ_dir_block.numentry; /* !wrw */
if (got_first_fh == FALSE) /* !wrw */
read_in_a_fileheader(); /*#### /* !wrw */
/****************************************************/
/* search all the file headers under this directory */
/* block to find the one with right file name */
/****************************************************/
for (;;)
{
if ((rc = fheadnew->flag & COMPLETE_BIT) != COMPLETE_BIT)
{
if (*numentry)
--(*numentry);
if (*numentry==0)
{
if (dirblk->nextdb == LAST_DIRBLOCK) /* !wrw */
{
*found = FALSE;
*done_searching = TRUE;
break; /*exit FOR loop, go back to WHILE loop*/
}
else
{
read_in_next_dirblock(); /* !wrw */
break; /*exit FOR loop, go back to WHILE loop*/
}
}
else
{
read_in_a_fileheader(); /* !wrw */
continue;
}
}
for (i = 0; i <= (MAXFSPEC-2); ++i)
temp_fname[i] = fheadnew->fname[i];
temp_fname[MAXFSPEC-1] = NULLC;
if (fspecmatch(infspec,temp_fname)==TRUE)
{
*found = TRUE;
break;
}
else /* This file header is not the right one*/
{
if (*numentry)
--(*numentry);
if (*numentry == 0)
{
if (dirblk->nextdb == LAST_DIRBLOCK)
{
*found = FALSE;
*done_searching = TRUE;
break; /*exit FOR loop, go back to WHILE loop*/
}
else
{
read_in_next_dirblock(); /* !wrw */
break;
} /*end of if not last dir block */
}
else /*point to the next file header and loop again*/
read_in_a_fileheader(); /* !wrw */
}
} /* end for (;;) loop to search all file headers in a directory block */
} /*end of while loop*/
/*******************************************************************/
/* if a file is found, save the information in the disk header and */
/* file header */
/*******************************************************************/
if (*found == TRUE)
{
/* Store information from dir blk into finfo */
if (strcmp(dir_path,"no path from fnext") == 0)
strcpy(finfo->path,temp_path);
else
{
finfo->path[0] = '\\';
finfo->path[1] = NULLC;
strcat(finfo->path,dir_path);
}
/*store information from file header into finfo*/
for (i = 0; i <= (MAXFSPEC-2); ++i)
finfo->fname[i] = fheadnew->fname[i];
finfo->fname[MAXFSPEC-1] = NULLC;
finfo->fflag = fheadnew->flag;
finfo->dnum = fheadnew->fsequenc;
finfo->ftime = fheadnew->ftime;
finfo->fdate = fheadnew->fdate;
finfo->attrib = fheadnew->attrib;
finfo->partsize = fheadnew->partsize;
finfo->offset = fheadnew->offset;
if ((fheadnew->flag & EXT_ATTR_FLAG) == EXT_ATTR_FLAG) /*;AN000;3*/
finfo->ea_offset = fheadnew->FH_EA_offset; /*;AN000;3*/
if (*numentry)
--(*numentry);
if (*numentry == 0)
{
if (dirblk->nextdb == LAST_DIRBLOCK)
*done_searching = TRUE;
else
{
read_in_next_dirblock(); /* !wrw */
read_in_a_fileheader(); /* !wrw */
*numentry = dirblk->numentry;
}
}
else
read_in_a_fileheader(); /* !wrw */
*dirptr=(WORD far *)dirblk;
*flptr=(WORD far *)fheadnew;
return (TRUE);
} /*end of if found */
else
return (FALSE);
return(TRUE); /*;AN000;*/
} /*end of subroutine */
/* 0 */
/***************** START OF SPECIFICATION ********************************
/*
/* SUBROUTINE NAME : findnext_new
/*
/* DESCRIPTIVE NAME : For new format only, continue at the point
/* findfirst_new or previous findnext_new exit, search
/* the entire file of CONTROL.xxx to find matching file
/* names.
/*
/* FUNCTION: Continue at where findfirst_new or previous findnext_new
/* stop, search the current directory blocks for the matching
/* file path, if fail to find a file, then call findfile to
/* search all directory block.
/*
/*
/********************** END OF SPECIFICATIONS *******************************/
int findnext_new(finfo, found, done_searching, in_path,
infspec, dirptr, flptr, numentry, dir_path)
struct file_info *finfo;
WORD *found;
unsigned int *done_searching;
BYTE *in_path;
BYTE *infspec;
WORD far **dirptr;
WORD far **flptr;
unsigned int *numentry;
BYTE *dir_path;
{
struct dir_block far *dirblk;
WORD retcode;
WORD i;
BYTE temp_fname[MAXFSPEC];
WORD rc;
char temp_path[MAXPATH];
dirblk=(struct dir_block far *)*dirptr;
fheadnew=(struct file_header_new far *)*flptr;
strcpy(dir_path,"no path from fnext");
temp_path[0] = '\\';
for (i = 0; i <= (MAXPATH-2); ++i)
temp_path[i+1] = dirblk->path[i];
temp_path[MAXPATH-1] = NULLC;
/****************************************/
/* Should we process this subdirectory ?*/
/****************************************/
if (pathmatch(in_path,temp_path) == TRUE)
{
/*************************************************/
/*complete the scanning current db to find a file*/
/*************************************************/
for (;;)
{
if ((rc = fheadnew->flag & COMPLETE_BIT) != COMPLETE_BIT)
{
if (*numentry)
--(*numentry);
if (*numentry==0)
{
if (dirblk->nextdb == LAST_DIRBLOCK)
{
*found = FALSE;
*done_searching = TRUE;
break;
}
else
{
read_in_next_dirblock(); /* !wrw */
break; /* !wrw */
}
} /* !wrw */
else /* There are more files from current dirblock. Get them */
{ /* !wrw */
read_in_a_fileheader(); /* !wrw */
continue; /* !wrw */
}
}
/*endif*/
/* If this file header is the right one)*/
for (i = 0; i <= (MAXFSPEC-2); ++i)
temp_fname[i] = fheadnew->fname[i];
temp_fname[MAXFSPEC-1] = NULLC;
if (fspecmatch(infspec,temp_fname)==TRUE)
{
*found = TRUE;
for (i = 0; i <= (MAXPATH-2); ++i)
dir_path[i] = dirblk->path[i];
break;
}
else /*if this file header is not the right one*/
{
if (*numentry)
--(*numentry);
if (*numentry == 0) /* If no more files in this directory block */
{
if (dirblk->nextdb == LAST_DIRBLOCK) /* If this is the last dirblock on current source disk */
{
*found = FALSE;
*done_searching = TRUE;
break;
}
else
{
read_in_next_dirblock(); /* !wrw */
break; /* !wrw */
} /*end of if not last dir block */ /* !wrw */
} /* !wrw */
else /* !wrw */
read_in_a_fileheader(); /* !wrw */
}
} /*end loop searching all file headers in dir block */
} /*end of if the path match inpath*/
else
*found = FALSE;
/********************************************************************/
/* If fail to find a file in the current directory block, call */
/* filefind_new to find next. */
/* If already found or done searching, call findfile_new to store */
/* information in finfo and dinfo */
/********************************************************************/
*dirptr=(WORD far *)dirblk;
*flptr=(WORD far *)fheadnew;
retcode = findfile_new(finfo,found,done_searching,in_path,infspec,dirptr,
flptr,numentry, dir_path);
return(retcode);
}
/* 0 */
/***************** START OF SPECIFICATION ********************************
/*
/* SUBROUTINE NAME : findfirst_new
/*
/* DESCRIPTIVE NAME : For new format only, search the entire file
/* of CONTROL.xxx to find matching file names.
/*
/* FUNCTION: search directory blocks one after the other to find the
/* directory block with the matching file path, then search
/* the entire directory block to find the file with matching
/* file name.
/*
/*
/********************** END OF SPECIFICATIONS *******************************/
int findfirst_new(finfo,found,done_searching,in_path,infspec,dirptr,flptr,numentry,dir_path)
struct file_info *finfo;
WORD *found;
unsigned int *done_searching;
BYTE *in_path;
BYTE *infspec;
WORD far **dirptr;
WORD far **flptr;
unsigned int *numentry;
BYTE *dir_path;
{
struct dir_block far *dirblk;
WORD retcode;
strcpy(dir_path,"no path from fnext");
dirblk = (struct dir_block far *)&russ_dir_block; /* !wrw */
read_in_first_dirblock(); /* !wrw */
if (got_first_fh == FALSE) /* !wrw */
read_in_a_fileheader(); /*### /* !wrw */
*found = FALSE;
*done_searching = FALSE;
*dirptr=(WORD far *)dirblk;
*flptr=(WORD far *)fheadnew;
retcode = findfile_new(finfo,found,done_searching,in_path,
infspec,dirptr,flptr,numentry,dir_path);
return(retcode);
} /*end of findfirst_new */
/* 0 */
/*********************************************************************/
/*
/* SUBROUTINE NAME: read_in_next_dirblock
/*
/* FUNCTION:
/* Reads in a directory block
/* Figures out if it was put there by DOS 3.3 or 4.0
/*********************************************************************/
void read_in_next_dirblock() /* !wrw */
{
WORD retcode; /* return code save area */ /* !wrw */
WORD read_count; /* num bytes read in */ /* !wrw */
DWORD file_pointer; /* current file pointer, returned by lseek !wrw */
retcode = /* !wrw */
DOSCHGFILEPTR /* !wrw */
( /* !wrw */
control_file_handle, /* Handle */ /* !wrw */
russ_dir_block.nextdb, /* New location */ /* !wrw */
(BYTE)0, /* MOVE METHOD */ /* !wrw */
(DWORD far *)&file_pointer /* !wrw */
); /* !wrw */
retcode =
DOSREAD
( /* !wrw */
control_file_handle, /* !wrw */
(char far *)&russ_dir_block, /* !wrw */
(unsigned short)DIRBLKLEN, /* !wrw */
(unsigned far *)&read_count /* !wrw */
); /* !wrw */
/* !wrw */
if (retcode != NOERROR) /* !wrw */
{ /* !wrw */
display_it(SOURCE_NO_BACKUP_FILE,STND_ERR_DEV,0,NO_RESPTYPE,(BYTE)UTIL_MSG); /*;AN000;6*/
unexperror(NOBACKUPFILE); /* !wrw */
}
got_first_fh = FALSE; /* !wrw */
get_fileheader_length(); /*;AN000;3*/
return; /* !wrw */
} /* !wrw */
/*********************************************************************/
/*
/* SUBROUTINE NAME: read_in_first_dirblock
/*
/* FUNCTION:
/* Reads in the first directory block
/* Figures out if it was put there by DOS 3.3 or 4.0
/*********************************************************************/
void read_in_first_dirblock() /* !wrw */
{
WORD retcode; /* return code save area */ /* !wrw */
WORD read_count; /* num bytes read in */ /* !wrw */
/********************************************************************/
/* READ DIRECTORY_BLOCK INTO STATIC DATA AREA */
/********************************************************************/
retcode = DOSREAD( /* !wrw */
control_file_handle, /* !wrw */
(char far *)&russ_dir_block, /* !wrw */
(unsigned short)DIRBLKLEN, /* !wrw */
(unsigned far *)&read_count /* !wrw */
); /* !wrw */
if (retcode != 0) /* !wrw */
{ /* !wrw */
display_it(SOURCE_NO_BACKUP_FILE,STND_ERR_DEV,0,NO_RESPTYPE,(BYTE)UTIL_MSG); /*;AN000;6*/
unexperror(NOBACKUPFILE); /* !wrw */
}
got_first_fh = FALSE; /* !wrw */
get_fileheader_length(); /*;AN000;3*/
return; /* end subroutine */ /* !wrw */
} /* !wrw */
/**************************************************************/
/*
/* SUBROUTINE: get_fileheader_length
/*
/* FUNCTION: Gets the length of a file header
/* Sets BACKUP_LEVEL to indicate which
/**************************************************************/
void get_fileheader_length()
{
WORD retcode; /*;AN000;3*/
WORD read_count; /*;AN000;3*/
DWORD file_position; /*;AN000;3*/
/* Save current file pointer */
retcode = /*;AN000;3*/
DOSCHGFILEPTR /*;AN000;3*/
( /*;AN000;3*/
control_file_handle, /* Handle */ /*;AN000;3*/
(DWORD)0, /* New location *//*;AN000;3*/
(BYTE)1, /* MOVE METHOD *//*;AN000;3*/
(DWORD far *)&file_position /*;AN000;3*/
); /*;AN000;3*/
if (retcode != 0) /*;AN000;3*/
{ /*;AN000;3*/
display_it(SOURCE_NO_BACKUP_FILE,STND_ERR_DEV,0,NO_RESPTYPE,(BYTE)UTIL_MSG); /*;AN000;6*/
unexperror(NOBACKUPFILE); /*;AN000;3*/
}
/* Read in file header length*/
retcode = /*;AN000;3*/
DOSREAD /*;AN000;3*/
( /*;AN000;3*/
control_file_handle, /*;AN000;3*/
(char far *)&fileheader_length, /*;AN000;3*/
(unsigned short)2, /*;AN000;3*/
(unsigned far *)&read_count /*;AN000;3*/
); /*;AN000;3*/
if (retcode != 0 || read_count != 2) /*;AN000;3*/
{ /*;AN000;3*/
display_it(SOURCE_NO_BACKUP_FILE,STND_ERR_DEV,0,NO_RESPTYPE,(BYTE)UTIL_MSG); /*;AN000;6*/
unexperror(NOBACKUPFILE); /*;AN000;3*/
}
/* Reset file pointer */
retcode = /*;AN000;3*/
DOSCHGFILEPTR /*;AN000;3*/
( /*;AN000;3*/
control_file_handle, /* Handle */ /*;AN000;3*/
file_position, /* New location *//*;AN000;3*/
(BYTE)0, /* MOVE METHOD *//*;AN000;3*/
(DWORD far *)&file_position /*;AN000;3*/
); /*;AN000;3*/
return;
} /* end get_fileheader_length() */
/* 0 */
/**************************************************************/
/*
/* SUBROUTINE: read_in_a_fileheader
/*
/* FUNCTION: Reads in a file header
/*
/**************************************************************/
void read_in_a_fileheader() /* !wrw */
{ /* !wrw */
WORD retcode; /* return code save area */ /* !wrw */
WORD read_count; /* num bytes read in */ /* !wrw */
retcode = DOSREAD /* !wrw */
( /* !wrw */
control_file_handle, /* !wrw */
(char far *)&russ_file_header, /* !wrw */
fileheader_length, /* !wrw */
(unsigned far *)&read_count /* !wrw */
); /* !wrw */
if (retcode != NOERROR) /* !wrw */
{ /* !wrw */
display_it(SOURCE_NO_BACKUP_FILE,STND_ERR_DEV,0,NO_RESPTYPE,(BYTE)UTIL_MSG); /*;AN000;6*/
unexperror(NOBACKUPFILE); /* !wrw */
} /* !wrw */
got_first_fh = TRUE; /* !wrw */
fheadnew = (struct file_header_new far *)&russ_file_header; /* !wrw */
return; /* !wrw */
} /* !wrw */
|
