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dos33fsprogs
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dos33fsprogs/dos33.c

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#include <stdio.h>
#include <stdlib.h> /* exit() */
#include <string.h> /* strncpy() */
#include <sys/stat.h> /* struct stat */
#include <fcntl.h> /* O_RDONLY */
#include <unistd.h> /* lseek() */
#include <ctype.h> /* toupper() */
#include "version.h"
#include "dos33.h"
static unsigned char sector_buffer[BYTES_PER_SECTOR];
static int ones_lookup[16]={
/* 0x0 = 0000 */ 0,
/* 0x1 = 0001 */ 1,
/* 0x2 = 0010 */ 1,
/* 0x3 = 0011 */ 2,
/* 0x4 = 0100 */ 1,
/* 0x5 = 0101 */ 2,
/* 0x6 = 0110 */ 2,
/* 0x7 = 0111 */ 3,
/* 0x8 = 1000 */ 1,
/* 0x9 = 1001 */ 2,
/* 0xA = 1010 */ 2,
/* 0xB = 1011 */ 3,
/* 0xC = 1100 */ 2,
/* 0xd = 1101 */ 3,
/* 0xe = 1110 */ 3,
/* 0xf = 1111 */ 4,
};
#define FILE_NORMAL 0
#define FILE_DELETED 1
static unsigned char dos33_file_type(int value) {
unsigned char result;
switch(value&0x7f){
case 0x0: result='T'; break;
case 0x1: result='I'; break;
case 0x2: result='A'; break;
case 0x4: result='B'; break;
case 0x8: result='S'; break;
case 0x10: result='R'; break;
case 0x20: result='N'; break;
case 0x40: result='L'; break;
default: result='?'; break;
}
return result;
}
static unsigned char dos33_char_to_type(char type,int lock) {
unsigned char result,temp_type;
temp_type=type;
/* Covert to upper case */
if (temp_type>='a') temp_type=temp_type-0x20;
switch(temp_type) {
case 'T': result=0x0; break;
case 'I': result=0x1; break;
case 'A': result=0x2; break;
case 'B': result=0x4; break;
case 'S': result=0x8; break;
case 'R': result=0x10; break;
case 'N': result=0x20; break;
case 'L': result=0x40; break;
default: result=0x0;
}
if (lock) result|=0x80;
return result;
}
/* dos33 filenames have top bit set on ascii chars */
/* and are padded with spaces */
static char *dos33_filename_to_ascii(char *dest,unsigned char *src,int len) {
int i=0,last_nonspace=0;
for(i=0;i<len;i++) if (src[i]!=0xA0) last_nonspace=i;
for(i=0;i<last_nonspace+1;i++) {
dest[i]=src[i]^0x80; /* toggle top bit */
}
dest[i]='\0';
return dest;
}
/* Read VTOC into a buffer */
static int dos33_read_vtoc(int fd) {
/* Seek to VTOC */
lseek(fd,DISK_OFFSET(VTOC_TRACK,VTOC_SECTOR),SEEK_SET);
/* read in VTOC */
read(fd,&sector_buffer,BYTES_PER_SECTOR);
return 0;
}
/* Calculate available freespace */
static int dos33_free_space(int fd) {
unsigned char bitmap[4];
int i,sectors_free=0;
/* Read Vtoc */
dos33_read_vtoc(fd);
for(i=0;i<TRACKS_PER_DISK;i++) {
bitmap[0]=sector_buffer[VTOC_FREE_BITMAPS+(i*4)];
bitmap[1]=sector_buffer[VTOC_FREE_BITMAPS+(i*4)+1];
sectors_free+=ones_lookup[bitmap[0]&0xf];
sectors_free+=ones_lookup[(bitmap[0]>>4)&0xf];
sectors_free+=ones_lookup[bitmap[1]&0xf];
sectors_free+=ones_lookup[(bitmap[1]>>4)&0xf];
}
return sectors_free*BYTES_PER_SECTOR;
}
/* Get a T/S value from a Catalog Sector */
static int dos33_get_catalog_ts(int fd) {
dos33_read_vtoc(fd);
return TS_TO_INT(sector_buffer[VTOC_CATALOG_T],
sector_buffer[VTOC_CATALOG_S]);
}
/* returns the next valid catalog entry */
/* after the one passed in */
static int dos33_find_next_file(int fd,int catalog_tsf) {
int catalog_track,catalog_sector,catalog_file;
int file_track,i;
catalog_file=catalog_tsf>>16;
catalog_track=(catalog_tsf>>8)&0xff;
catalog_sector=(catalog_tsf&0xff);
catalog_loop:
/* Read in Catalog Sector */
lseek(fd,DISK_OFFSET(catalog_track,catalog_sector),SEEK_SET);
read(fd,sector_buffer,BYTES_PER_SECTOR);
i=catalog_file;
while(i<7) {
file_track=sector_buffer[CATALOG_FILE_LIST+(i*CATALOG_ENTRY_SIZE)];
/* 0xff means file deleted */
/* 0x0 means empty */
if ((file_track!=0xff) && (file_track!=0x0)){
return ((i<<16)+(catalog_track<<8)+catalog_sector);
}
i++;
}
catalog_track=sector_buffer[CATALOG_NEXT_T];
catalog_sector=sector_buffer[CATALOG_NEXT_S];
if (catalog_sector!=0) {
catalog_file=0;
goto catalog_loop;
}
return -1;
}
static int dos33_print_file_info(int fd,int catalog_tsf) {
int catalog_track,catalog_sector,catalog_file,i;
char temp_string[BUFSIZ];
catalog_file=catalog_tsf>>16;
catalog_track=(catalog_tsf>>8)&0xff;
catalog_sector=(catalog_tsf&0xff);
/* Read in Catalog Sector */
lseek(fd,DISK_OFFSET(catalog_track,catalog_sector),SEEK_SET);
read(fd,sector_buffer,BYTES_PER_SECTOR);
if (sector_buffer[CATALOG_FILE_LIST+(catalog_file*CATALOG_ENTRY_SIZE)+FILE_TYPE]>0x7f) {
printf("*");
}
else printf(" ");
printf("%c",dos33_file_type(sector_buffer[CATALOG_FILE_LIST+(catalog_file*CATALOG_ENTRY_SIZE)+FILE_TYPE]));
printf(" ");
printf("%.3i ",sector_buffer[CATALOG_FILE_LIST+(catalog_file*CATALOG_ENTRY_SIZE+FILE_SIZE_L)]+
(sector_buffer[CATALOG_FILE_LIST+(catalog_file*CATALOG_ENTRY_SIZE+FILE_SIZE_H)]<<8));
strncpy(temp_string,
dos33_filename_to_ascii(temp_string,sector_buffer+(CATALOG_FILE_LIST+
(catalog_file*CATALOG_ENTRY_SIZE+FILE_NAME)),30),
BUFSIZ);
for(i=0;i<strlen(temp_string);i++) {
if (temp_string[i]<0x20) printf("^%c",temp_string[i]+0x40);
else printf("%c",temp_string[i]);
}
printf("\n");
return 0;
}
/* Checks if "filename" exists */
/* returns entry/track/sector */
static int dos33_check_file_exists(int fd,
char *filename,
int file_deleted) {
int catalog_track,catalog_sector;
int i,file_track;
char file_name[31];
/* read the VTOC into buffer */
dos33_read_vtoc(fd);
/* get the catalog track and sector from the VTOC */
catalog_track=sector_buffer[VTOC_CATALOG_T];
catalog_sector=sector_buffer[VTOC_CATALOG_S];
repeat_catalog:
/* Read in Catalog Sector */
lseek(fd,DISK_OFFSET(catalog_track,catalog_sector),SEEK_SET);
read(fd,sector_buffer,BYTES_PER_SECTOR);
/* scan all file entries in catalog sector */
for(i=0;i<7;i++) {
file_track=sector_buffer[CATALOG_FILE_LIST+(i*CATALOG_ENTRY_SIZE)];
/* 0xff means file deleted */
/* 0x0 means empty */
if (file_track!=0x0) {
if (file_track==0xff) {
dos33_filename_to_ascii(file_name,
sector_buffer+(CATALOG_FILE_LIST+(i*CATALOG_ENTRY_SIZE+FILE_NAME)),29);
if (file_deleted) {
/* return if we found the file */
if (!strncmp(filename,file_name,29)) {
return ((i<<16)+(catalog_track<<8)+catalog_sector);
}
}
}
else {
dos33_filename_to_ascii(file_name,
sector_buffer+(CATALOG_FILE_LIST+(i*CATALOG_ENTRY_SIZE+FILE_NAME)),30);
/* return if we found the file */
if (!strncmp(filename,file_name,30)) {
return ((i<<16)+(catalog_track<<8)+catalog_sector);
}
}
}
}
/* point to next catalog track/sector */
catalog_track=sector_buffer[CATALOG_NEXT_T];
catalog_sector=sector_buffer[CATALOG_NEXT_S];
if (catalog_sector!=0) goto repeat_catalog;
return -1;
}
/* could be replaced by "find leading 1" instruction */
/* if available */
int find_first_one(unsigned char byte) {
int i=0;
if (byte==0) return -1;
while((byte& (0x1<<i))==0) {
i++;
}
return i;
}
static int dos33_free_sector(int fd,int track,int sector) {
unsigned char vtoc[BYTES_PER_SECTOR];
/* Seek to VTOC */
lseek(fd,DISK_OFFSET(VTOC_TRACK,VTOC_SECTOR),SEEK_SET);
/* read in VTOC */
read(fd,&vtoc,BYTES_PER_SECTOR);
/* each bitmap is 32 bits. With 16-sector tracks only first 16 used */
/* 1 indicates free, 0 indicates used */
if (sector<8) {
vtoc[VTOC_FREE_BITMAPS+(track*4)+1]|=(0x1<<sector);
}
else {
vtoc[VTOC_FREE_BITMAPS+(track*4)]|=(0x1<<(sector-8));
}
/* write modified VTOC back out */
lseek(fd,DISK_OFFSET(VTOC_TRACK,VTOC_SECTOR),SEEK_SET);
write(fd,&vtoc,BYTES_PER_SECTOR);
return 0;
}
static int dos33_allocate_sector(int fd) {
int found_track=0,found_sector=0;
unsigned char bitmap[4];
int i,start_track,track_dir,byte;
dos33_read_vtoc(fd);
/* Originally used to keep things near center of disk for speed */
/* We can use to avoid fragmentation possibly */
start_track=sector_buffer[VTOC_LAST_ALLOC_T]%TRACKS_PER_DISK;
track_dir=sector_buffer[VTOC_ALLOC_DIRECT];
if (track_dir==255) track_dir=-1;
if ((track_dir!=1) && (track_dir!=-1)) {
fprintf(stderr,"ERROR! Invalid track dir %i\n",track_dir);
}
if (((start_track>VTOC_TRACK) && (track_dir!=1)) ||
((start_track<VTOC_TRACK) && (track_dir!=-1))) {
fprintf(stderr,"Warning! Non-optimal values for track dir t=%i d=%i!\n",
start_track,track_dir);
}
i=start_track;
do {
for(byte=1;byte>-1;byte--) {
bitmap[byte]=sector_buffer[VTOC_FREE_BITMAPS+(i*4)+byte];
if (bitmap[byte]!=0x00) {
found_sector=find_first_one(bitmap[byte]);
found_track=i;
/* clear bit indicating in use */
sector_buffer[VTOC_FREE_BITMAPS+(i*4)+byte]&=~(0x1<<found_sector);
found_sector+=(8*(1-byte));
goto found_one;
}
}
/* Move to next track, handling overflows */
i+=track_dir;
if (i<0) {
i=VTOC_TRACK;
track_dir=1;
}
if (i>=TRACKS_PER_DISK) {
i=VTOC_TRACK;
track_dir=-1;
}
} while (i!=start_track);
fprintf(stderr,"No room left!\n");
return -1;
found_one:
/* store new track/direction info */
sector_buffer[VTOC_LAST_ALLOC_T]=found_track;
if (found_track>VTOC_TRACK) sector_buffer[VTOC_ALLOC_DIRECT]=1;
else sector_buffer[VTOC_ALLOC_DIRECT]=-1;
/* Seek to VTOC */
lseek(fd,DISK_OFFSET(VTOC_TRACK,VTOC_SECTOR),SEEK_SET);
/* Write out VTOC */
write(fd,&sector_buffer,BYTES_PER_SECTOR);
return ((found_track<<8)+found_sector);
}
/* creates file apple_filename on the image from local file filename */
/* returns ?? */
static int dos33_add_file(int fd,char type,char *filename,
char *apple_filename) {
int free_space,file_size,needed_sectors;
struct stat file_info;
int size_in_sectors=0;
int initial_ts_list=0,ts_list=0,i,data_ts,x,bytes_read=0,old_ts_list;
int catalog_track,catalog_sector,sectors_used=0;
int input_fd;
if (apple_filename[0]<64) {
fprintf(stderr,"Error! First char of filename must be ASCII 64 or above!\n");
exit(3);
}
{
int i;
for(i=0;i<strlen(apple_filename);i++) {
if (apple_filename[i]==',') {
fprintf(stderr,"Error! Cannot have , in a filename!\n");
exit(3);
}
}
}
/* FIXME */
/* check type */
/* and sanity check a/b filesize is set properly */
/* Determine size of file to upload */
if (stat(filename,&file_info)<0) {
fprintf(stderr,"Error! %s not found!\n",filename);
exit(3);
}
file_size=(int)file_info.st_size;
/* We need to round up to nearest sector size */
/* Add an extra sector for the T/S list */
/* Then add extra sector for a T/S list every 122*256 bytes (~31k) */
needed_sectors=(file_size/BYTES_PER_SECTOR)+ /* round sectors */
((file_size%BYTES_PER_SECTOR)!=0)+/* tail if needed */
1+/* first T/S list */
(file_size/(122*BYTES_PER_SECTOR)); /* extra t/s lists */
/* Get free space on device */
free_space=dos33_free_space(fd);
/* Check for free space */
if (needed_sectors*BYTES_PER_SECTOR>free_space) {
fprintf(stderr,"Error! Not enough free space on disk image (need %d have %d)\n",
needed_sectors*BYTES_PER_SECTOR,free_space);
exit(4);
}
/* plus one because we need a sector for the tail */
size_in_sectors=(file_size/BYTES_PER_SECTOR)+
((file_size%BYTES_PER_SECTOR)!=0);
// printf("Need to allocate %i data sectors\n",size_in_sectors);
// printf("Need to allocate %i total sectors\n",needed_sectors);
/* Open the local file */
input_fd=open(filename,O_RDONLY);
if (input_fd<0) {
fprintf(stderr,"Error! could not open %s\n",filename);
return -1;
}
i=0;
while (i<size_in_sectors) {
/* Create new T/S list if necessary */
if (i%TSL_MAX_NUMBER==0) {
old_ts_list=ts_list;
/* allocate a sector for the new list */
ts_list=dos33_allocate_sector(fd);
sectors_used++;
if (ts_list<0) return -1;
/* clear the t/s sector */
for(x=0;x<BYTES_PER_SECTOR;x++) sector_buffer[x]=0;
lseek(fd,DISK_OFFSET((ts_list>>8)&0xff,ts_list&0xff),SEEK_SET);
write(fd,sector_buffer,BYTES_PER_SECTOR);
if (i==0) initial_ts_list=ts_list;
else {
/* we aren't the first t/s list so do special stuff */
/* load in the old t/s list */
lseek(fd,DISK_OFFSET((old_ts_list>>8)&0xff,old_ts_list&0xff),SEEK_SET);
read(fd,&sector_buffer,BYTES_PER_SECTOR);
/* point from old ts list to new one we just made */
sector_buffer[TSL_NEXT_TRACK]=(ts_list>>8)&0xff;
sector_buffer[TSL_NEXT_SECTOR]=(ts_list)&0xff;
/* set offset into file */
sector_buffer[TSL_OFFSET_H]=(((i-122)*256)>>8)&0xff;
sector_buffer[TSL_OFFSET_L]=(((i-122)*256)&0xff);
/* write out the old t/s list with updated info */
lseek(fd,DISK_OFFSET((old_ts_list>>8)&0xff,old_ts_list&0xff),SEEK_SET);
write(fd,sector_buffer,BYTES_PER_SECTOR);
}
}
/* allocate a sector */
data_ts=dos33_allocate_sector(fd);
sectors_used++;
if (data_ts<0) return -1;
/* clear sector */
for(x=0;x<BYTES_PER_SECTOR;x++) sector_buffer[x]=0;
/* read from input */
bytes_read=read(input_fd,sector_buffer,BYTES_PER_SECTOR);
/* write to disk image */
lseek(fd,DISK_OFFSET((data_ts>>8)&0xff,data_ts&0xff),SEEK_SET);
write(fd,sector_buffer,BYTES_PER_SECTOR);
// printf("Writing %i bytes to %i/%i\n",bytes_read,(data_ts>>8)&0xff,
// data_ts&0xff);
/* add to T/s table */
/* read in t/s list */
lseek(fd,DISK_OFFSET((ts_list>>8)&0xff,ts_list&0xff),SEEK_SET);
read(fd,sector_buffer,BYTES_PER_SECTOR);
/* point to new data sector */
sector_buffer[((i%TSL_MAX_NUMBER)*2)+TSL_LIST]=(data_ts>>8)&0xff;
sector_buffer[((i%TSL_MAX_NUMBER)*2)+TSL_LIST+1]=(data_ts&0xff);
/* write t/s list back out */
lseek(fd,DISK_OFFSET((ts_list>>8)&0xff,ts_list&0xff),SEEK_SET);
write(fd,sector_buffer,BYTES_PER_SECTOR);
i++;
}
/* Add new file to Catalog */
/* read in vtoc */
dos33_read_vtoc(fd);
catalog_track=sector_buffer[VTOC_CATALOG_T];
catalog_sector=sector_buffer[VTOC_CATALOG_S];
continue_parsing_catalog:
/* Read in Catalog Sector */
lseek(fd,DISK_OFFSET(catalog_track,catalog_sector),SEEK_SET);
read(fd,sector_buffer,BYTES_PER_SECTOR);
/* Find empty directory entry */
i=0;
while(i<7) {
if ((sector_buffer[CATALOG_FILE_LIST+(i*CATALOG_ENTRY_SIZE)]==0xff) ||
(sector_buffer[CATALOG_FILE_LIST+(i*CATALOG_ENTRY_SIZE)]==0x00))
goto got_a_dentry;
i++;
}
if ((catalog_track=0x11) && (catalog_sector==1)) {
/* in theory can only have 105 files */
/* if full, we have no recourse! */
/* can we allocate new catalog sectors and point to them?? */
fprintf(stderr,"Error! No more room for files!\n");
return -1;
}
catalog_track=sector_buffer[CATALOG_NEXT_T];
catalog_sector=sector_buffer[CATALOG_NEXT_S];
goto continue_parsing_catalog;
got_a_dentry:
// printf("Adding file at entry %i of catalog 0x%x:0x%x\n",
// i,catalog_track,catalog_sector);
/* Point entry to initial t/s list */
sector_buffer[CATALOG_FILE_LIST+(i*CATALOG_ENTRY_SIZE)]=(initial_ts_list>>8)&0xff;
sector_buffer[CATALOG_FILE_LIST+(i*CATALOG_ENTRY_SIZE)+1]=(initial_ts_list&0xff);
/* set file type */
sector_buffer[CATALOG_FILE_LIST+(i*CATALOG_ENTRY_SIZE)+FILE_TYPE]=
dos33_char_to_type(type,0);
// printf("Pointing T/S to %x/%x\n",(initial_ts_list>>8)&0xff,initial_ts_list&0xff);
/* copy over filename */
for(x=0;x<strlen(apple_filename);x++)
sector_buffer[CATALOG_FILE_LIST+(i*CATALOG_ENTRY_SIZE)+FILE_NAME+x]=
apple_filename[x]^0x80;
/* pad out the filename with spaces */
for(x=strlen(apple_filename);x<FILE_NAME_SIZE;x++)
sector_buffer[CATALOG_FILE_LIST+(i*CATALOG_ENTRY_SIZE)+FILE_NAME+x]=' '^0x80;
/* fill in filesize in sectors */
sector_buffer[CATALOG_FILE_LIST+(i*CATALOG_ENTRY_SIZE)+FILE_SIZE_L]=
sectors_used&0xff;
sector_buffer[CATALOG_FILE_LIST+(i*CATALOG_ENTRY_SIZE)+FILE_SIZE_H]=
(sectors_used>>8)&0xff;
/* write out catalog sector */
lseek(fd,DISK_OFFSET(catalog_track,catalog_sector),SEEK_SET);
write(fd,sector_buffer,BYTES_PER_SECTOR);
return 0;
}
/* load a file. fts=entry/track/sector */
static int dos33_load_file(int fd,int fts,char *filename) {
int output_fd;
int catalog_file,catalog_track,catalog_sector;
int file_type,file_size=-1,tsl_track,tsl_sector,data_t,data_s;
unsigned char data_sector[BYTES_PER_SECTOR];
int tsl_pointer=0,output_pointer=0;
/* Fix me! Warn if overwriting file! */
output_fd=open(filename,O_WRONLY|O_CREAT|O_TRUNC,0666);
if (output_fd<0) {
fprintf(stderr,"Error! could not open %s for local save\n",filename);
return -1;
}
catalog_file=fts>>16;
catalog_track=(fts>>8)&0xff;
catalog_sector=(fts&0xff);
/* Read in Catalog Sector */
lseek(fd,DISK_OFFSET(catalog_track,catalog_sector),SEEK_SET);
read(fd,sector_buffer,BYTES_PER_SECTOR);
tsl_track=sector_buffer[CATALOG_FILE_LIST+
(catalog_file*CATALOG_ENTRY_SIZE)+FILE_TS_LIST_T];
tsl_sector=sector_buffer[CATALOG_FILE_LIST+
(catalog_file*CATALOG_ENTRY_SIZE)+FILE_TS_LIST_S];
file_type=dos33_file_type(sector_buffer[CATALOG_FILE_LIST+
(catalog_file*CATALOG_ENTRY_SIZE)
+FILE_TYPE]);
// printf("file_type: %c\n",file_type);
keep_saving:
/* Read in TSL Sector */
lseek(fd,DISK_OFFSET(tsl_track,tsl_sector),SEEK_SET);
read(fd,sector_buffer,BYTES_PER_SECTOR);
tsl_pointer=0;
/* check each track/sector pair in the list */
while(tsl_pointer<TSL_MAX_NUMBER) {
/* get the t/s value */
data_t=sector_buffer[TSL_LIST+(tsl_pointer*TSL_ENTRY_SIZE)];
data_s=sector_buffer[TSL_LIST+(tsl_pointer*TSL_ENTRY_SIZE)+1];
if ((data_s==0) && (data_t==0)) {
/* empty */
}
else {
lseek(fd,DISK_OFFSET(data_t,data_s),SEEK_SET);
read(fd,&data_sector,BYTES_PER_SECTOR);
/* some file formats have the size in the first sector */
/* so cheat and get real file size from file itself */
if (output_pointer==0) {
switch(file_type) {
case 'A':
case 'I':
file_size=data_sector[0]+(data_sector[1]<<8)+2;
break;
case 'B':
file_size=data_sector[2]+(data_sector[3]<<8)+4;
break;
default:
file_size=-1;
}
}
/* write the block read in out to the output file */
lseek(output_fd,output_pointer*BYTES_PER_SECTOR,SEEK_SET);
write(output_fd,&data_sector,BYTES_PER_SECTOR);
}
output_pointer++;
tsl_pointer++;
}
/* finished with TSL sector, see if we have another */
tsl_track=sector_buffer[TSL_NEXT_TRACK];
tsl_sector=sector_buffer[TSL_NEXT_SECTOR];
// printf("Next track/sector=%d/%d op=%d\n",tsl_track,tsl_sector,
// output_pointer*BYTES_PER_SECTOR);
if ((tsl_track==0) && (tsl_sector==0)) {
}
else goto keep_saving;
/* Correct the file size */
if (file_size>=0) {
// printf("Truncating file size to %d\n",file_size);
ftruncate(output_fd,file_size);
}
return 0;
}
/* lock a file. fts=entry/track/sector */
static int dos33_lock_file(int fd,int fts,int lock) {
int catalog_file,catalog_track,catalog_sector;
int file_type;
catalog_file=fts>>16;
catalog_track=(fts>>8)&0xff;
catalog_sector=(fts&0xff);
/* Read in Catalog Sector */
lseek(fd,DISK_OFFSET(catalog_track,catalog_sector),SEEK_SET);
read(fd,sector_buffer,BYTES_PER_SECTOR);
file_type=sector_buffer[CATALOG_FILE_LIST+
(catalog_file*CATALOG_ENTRY_SIZE)
+FILE_TYPE];
if (lock) file_type|=0x80;
else file_type&=0x7f;
sector_buffer[CATALOG_FILE_LIST+
(catalog_file*CATALOG_ENTRY_SIZE)
+FILE_TYPE]=file_type;
/* write back modified catalog sector */
lseek(fd,DISK_OFFSET(catalog_track,catalog_sector),SEEK_SET);
write(fd,sector_buffer,BYTES_PER_SECTOR);
return 0;
}
/* rename a file. fts=entry/track/sector */
/* FIXME: can we rename a locked file? */
/* FIXME: validate the new filename is valid */
static int dos33_rename_file(int fd,int fts,char *new_name) {
int catalog_file,catalog_track,catalog_sector;
int x;
catalog_file=fts>>16;
catalog_track=(fts>>8)&0xff;
catalog_sector=(fts&0xff);
/* Read in Catalog Sector */
lseek(fd,DISK_OFFSET(catalog_track,catalog_sector),SEEK_SET);
read(fd,sector_buffer,BYTES_PER_SECTOR);
/* copy over filename */
for(x=0;x<strlen(new_name);x++)
sector_buffer[CATALOG_FILE_LIST+(catalog_file*CATALOG_ENTRY_SIZE)+
FILE_NAME+x]=new_name[x]^0x80;
/* pad out the filename with spaces */
for(x=strlen(new_name);x<FILE_NAME_SIZE;x++)
sector_buffer[CATALOG_FILE_LIST+(catalog_file*CATALOG_ENTRY_SIZE)+
FILE_NAME+x]=' '^0x80;
/* write back modified catalog sector */
lseek(fd,DISK_OFFSET(catalog_track,catalog_sector),SEEK_SET);
write(fd,sector_buffer,BYTES_PER_SECTOR);
return 0;
}
/* undelete a file. fts=entry/track/sector */
/* FIXME: can we rename a locked file? */
/* FIXME: validate the new filename is valid */
static int dos33_undelete_file(int fd,int fts,char *new_name) {
int catalog_file,catalog_track,catalog_sector;
char replacement_char;
catalog_file=fts>>16;
catalog_track=(fts>>8)&0xff;
catalog_sector=(fts&0xff);
/* Read in Catalog Sector */
lseek(fd,DISK_OFFSET(catalog_track,catalog_sector),SEEK_SET);
read(fd,sector_buffer,BYTES_PER_SECTOR);
/* get the stored track value, and put it back */
/* FIXME: should walk file to see if T/s valild */
/* by setting the track value to FF which indicates deleted file */
sector_buffer[CATALOG_FILE_LIST+(catalog_file*CATALOG_ENTRY_SIZE)]=
sector_buffer[CATALOG_FILE_LIST+(catalog_file*CATALOG_ENTRY_SIZE)+
FILE_NAME+29];
/* restore file name if possible */
replacement_char=0xa0;
if (strlen(new_name)>29) replacement_char=new_name[29]^0x80;
sector_buffer[CATALOG_FILE_LIST+(catalog_file*CATALOG_ENTRY_SIZE)+
FILE_NAME+29]=replacement_char;
/* write back modified catalog sector */
lseek(fd,DISK_OFFSET(catalog_track,catalog_sector),SEEK_SET);
write(fd,sector_buffer,BYTES_PER_SECTOR);
return 0;
}
static int dos33_delete_file(int fd,int fsl) {
int i;
int catalog_track,catalog_sector,catalog_entry;
int ts_track,ts_sector;
char file_type;
/* unpack file/track/sector info */
catalog_entry=fsl>>16;
catalog_track=(fsl>>8)&0xff;
catalog_sector=(fsl&0xff);
/* Load in the catalog table for the file */
lseek(fd,DISK_OFFSET(catalog_track,catalog_sector),SEEK_SET);
read(fd,sector_buffer,BYTES_PER_SECTOR);
file_type=sector_buffer[CATALOG_FILE_LIST+
(catalog_entry*CATALOG_ENTRY_SIZE)
+FILE_TYPE];
if (file_type&0x80) {
fprintf(stderr,"File is locked! Unlock before deleting!\n");
exit(1);
}
/* get pointer to t/s list */
ts_track=sector_buffer[CATALOG_FILE_LIST+catalog_entry*CATALOG_ENTRY_SIZE+
FILE_TS_LIST_T];
ts_sector=sector_buffer[CATALOG_FILE_LIST+catalog_entry*CATALOG_ENTRY_SIZE+
FILE_TS_LIST_S];
keep_deleting:
/* load in the t/s list info */
lseek(fd,DISK_OFFSET(ts_track,ts_sector),SEEK_SET);
read(fd,sector_buffer,BYTES_PER_SECTOR);
/* Free each sector listed by t/s list */
for(i=0;i<TSL_MAX_NUMBER;i++) {
/* If t/s = 0/0 then no need to clear */
if ((sector_buffer[TSL_LIST+2*i]==0) && (sector_buffer[TSL_LIST+2*i+1]==0)) {
}
else {
dos33_free_sector(fd,sector_buffer[TSL_LIST+2*i],sector_buffer[TSL_LIST+2*i+1]);
}
}
/* free the t/s list */
dos33_free_sector(fd,ts_track,ts_sector);
/* Point to next t/s list */
ts_track=sector_buffer[TSL_NEXT_TRACK];
ts_sector=sector_buffer[TSL_NEXT_SECTOR];
/* If more tsl lists, keep looping */
if ((ts_track==0x0) && (ts_sector==0x0)) {
}
else {
goto keep_deleting;
}
/* Erase file from catalog entry */
/* First reload proper catalog sector */
lseek(fd,DISK_OFFSET(catalog_track,catalog_sector),SEEK_SET);
read(fd,sector_buffer,BYTES_PER_SECTOR);
/* save track as last char of name, for undelete purposes */
sector_buffer[CATALOG_FILE_LIST+(catalog_entry*CATALOG_ENTRY_SIZE)+
(FILE_NAME+FILE_NAME_SIZE-1)]=
sector_buffer[CATALOG_FILE_LIST+(catalog_entry*CATALOG_ENTRY_SIZE)];
/* Actually delete the file */
/* by setting the track value to FF which indicates deleted file */
sector_buffer[CATALOG_FILE_LIST+(catalog_entry*CATALOG_ENTRY_SIZE)]=0xff;
/* re seek to catalog position and write out changes */
lseek(fd,DISK_OFFSET(catalog_track,catalog_sector),SEEK_SET);
write(fd,sector_buffer,BYTES_PER_SECTOR);
return 0;
}
static int dump_sector() {
int i,j;
for(i=0;i<16;i++) {
printf("$%02X : ",i*16);
for(j=0;j<16;j++)
printf("%02X ",sector_buffer[i*16+j]);
printf("\n");
}
return 0;
}
static int dos33_dump(int fd) {
int num_tracks,i,j,catalog_t,catalog_s,file,ts_t,ts_s,ts_total,track,sector;
int deleted=0;
char temp_string[BUFSIZ];
unsigned char tslist[BYTES_PER_SECTOR];
dos33_read_vtoc(fd);
dump_sector();
printf("\n\n");
printf("VTOC INFORMATION:\n");
catalog_t=sector_buffer[VTOC_CATALOG_T];
catalog_s=sector_buffer[VTOC_CATALOG_S];
printf("\tFirst Catalog = %02X/%02X\n",catalog_t,catalog_s);
printf("\tDOS RELEASE = 3.%i\n",sector_buffer[VTOC_DOS_RELEASE]);
printf("\tDISK VOLUME = %i\n",sector_buffer[VTOC_DISK_VOLUME]);
ts_total=sector_buffer[VTOC_MAX_TS_PAIRS];
printf("\tT/S pairs that will fit in T/S List = %i\n",ts_total);
printf("\tLast track where sectors were allocated = $%02X\n",
sector_buffer[VTOC_LAST_ALLOC_T]);
printf("\tDirection of track allocation = %i\n",
sector_buffer[VTOC_ALLOC_DIRECT]);
num_tracks=sector_buffer[VTOC_NUM_TRACKS];
printf("\tNumber of tracks per disk = %i\n",num_tracks);
printf("\tNumber of sectors per track = %i\n",
sector_buffer[VTOC_S_PER_TRACK]);
printf("\tNumber of bytes per sector = %i\n",
(sector_buffer[VTOC_BYTES_PER_SH]<<8)+sector_buffer[VTOC_BYTES_PER_SL]);
printf("\nFree sector bitmap:\n");
printf("\tTrack FEDCBA98 76543210\n");
for(i=0;i<num_tracks;i++) {
printf("\t $%02X: ",i);
for(j=0;j<8;j++) {
if ((sector_buffer[VTOC_FREE_BITMAPS+(i*4)]<<j)&0x80) printf(".");
else printf("U");
}
printf(" ");
for(j=0;j<8;j++) {
if ((sector_buffer[VTOC_FREE_BITMAPS+(i*4)+1]<<j)&0x80) printf(".");
else printf("U");
}
printf("\n");
}
repeat_catalog:
printf("\nCatalog Sector $%02X/$%02x\n",catalog_t,catalog_s);
lseek(fd,DISK_OFFSET(catalog_t,catalog_s),SEEK_SET);
read(fd,sector_buffer,BYTES_PER_SECTOR);
dump_sector(sector_buffer);
for(file=0;file<7;file++) {
printf("\n\n");
ts_t=sector_buffer[(CATALOG_FILE_LIST+(file*CATALOG_ENTRY_SIZE+FILE_TS_LIST_T))];
ts_s=sector_buffer[(CATALOG_FILE_LIST+(file*CATALOG_ENTRY_SIZE+FILE_TS_LIST_S))];
printf("%i+$%02X/$%02X - ",file,catalog_t,catalog_s);
deleted=0;
if (ts_t==0xff) {
printf("**DELETED** ");
deleted=1;
ts_t=sector_buffer[(CATALOG_FILE_LIST+(file*CATALOG_ENTRY_SIZE+FILE_NAME+0x1e))];
}
if (ts_t==0x00) {
printf("UNUSED!\n");
goto continue_dump;
}
strncpy(temp_string,dos33_filename_to_ascii(temp_string,
sector_buffer+(CATALOG_FILE_LIST+(file*CATALOG_ENTRY_SIZE+FILE_NAME)),30),
BUFSIZ);
for(i=0;i<strlen(temp_string);i++) {
if (temp_string[i]<0x20) printf("^%c",temp_string[i]+0x40);
else printf("%c",temp_string[i]);
}
printf("\n");
printf("\tLocked = %s\n",
sector_buffer[CATALOG_FILE_LIST+(file*CATALOG_ENTRY_SIZE)+FILE_TYPE]>0x7f?
"YES":"NO");
printf("\tType = %c\n",
dos33_file_type(sector_buffer[CATALOG_FILE_LIST+(file*CATALOG_ENTRY_SIZE)+FILE_TYPE]));
printf("\tSize in sectors = %i\n",
sector_buffer[CATALOG_FILE_LIST+(file*CATALOG_ENTRY_SIZE+FILE_SIZE_L)]+
(sector_buffer[CATALOG_FILE_LIST+(file*CATALOG_ENTRY_SIZE+FILE_SIZE_H)]<<8));
repeat_tsl:
printf("\tT/S List $%02X/$%02X:\n",ts_t,ts_s);
if (deleted) goto continue_dump;
lseek(fd,DISK_OFFSET(ts_t,ts_s),SEEK_SET);
read(fd,&tslist,BYTES_PER_SECTOR);
for(i=0;i<ts_total;i++) {
track=tslist[TSL_LIST+(i*TSL_ENTRY_SIZE)];
sector=tslist[TSL_LIST+(i*TSL_ENTRY_SIZE)+1];
if ((track==0) && (sector==0)) printf(".");
else printf("\n\t\t%02X/%02X",track,sector);
}
ts_t=tslist[TSL_NEXT_TRACK];
ts_s=tslist[TSL_NEXT_SECTOR];
if (!((ts_s==0) && (ts_t==0))) goto repeat_tsl;
continue_dump:;
}
catalog_t=sector_buffer[CATALOG_NEXT_T];
catalog_s=sector_buffer[CATALOG_NEXT_S];
if (catalog_s!=0) {
file=0;
goto repeat_catalog;
}
printf("\n");
return 0;
}
int display_help(char *name) {
printf("\ndos33 version %s\n",VERSION);
printf("by Vince Weaver <vince@deater.net>\n");
printf("\n");
printf("Usage: %s disk_image COMMAND\n",name);
printf(" Where disk_image is a valid dos3.3 disk image\n"
" and COMMAND is one of the following:\n");
printf("\tCATALOG\n");
printf("\tLOAD apple_file <local_file>\n");
printf("\tSAVE type loadl_file <apple_file>\n");
printf("\tDELETE apple_file\n");
printf("\tLOCK apple_file\n");
printf("\tUNLOCK apple_file\n");
printf("\tRENAME apple_file_old apple_file_new\n");
printf("\tUNDELETE apple_file\n");
printf("\tDUMP\n");
#if 0
printf("\tINIT\n");
printf("\tCOPY\n");
#endif
printf("\n");
return 0;
}
#define COMMAND_UNKNOWN 0
#define COMMAND_LOAD 1
#define COMMAND_SAVE 2
#define COMMAND_CATALOG 3
#define COMMAND_DELETE 4
#define COMMAND_UNDELETE 5
#define COMMAND_LOCK 6
#define COMMAND_UNLOCK 7
#define COMMAND_INIT 8
#define COMMAND_RENAME 9
#define COMMAND_COPY 10
#define COMMAND_DUMP 11
int main(int argc, char **argv) {
char image[BUFSIZ];
unsigned char type='b';
int dos_fd=0,i;
int command,catalog_entry;
char temp_string[BUFSIZ];
char apple_filename[31],new_filename[31];
char output_filename[BUFSIZ];
/* Check command line arguments */
if (argc<3) {
printf("\nInvalid arguments!\n");
display_help(argv[0]);
goto exit_program;
}
/* Check argument #2 which is command */
strncpy(temp_string,argv[2],BUFSIZ);
/* Make command be uppercase */
for(i=0;i<strlen(temp_string);i++) {
temp_string[i]=toupper(temp_string[i]);
}
if (!strncmp(temp_string,"LOAD",4)) {
command=COMMAND_LOAD;
}
else if (!strncmp(temp_string,"SAVE",4)) {
command=COMMAND_SAVE;
}
else if (!strncmp(temp_string,"CATALOG",7)) {
command=COMMAND_CATALOG;
}
else if (!strncmp(temp_string,"DELETE",6)) {
command=COMMAND_DELETE;
}
else if (!strncmp(temp_string,"UNDELETE",8)) {
command=COMMAND_UNDELETE;
}
else if (!strncmp(temp_string,"LOCK",4)) {
command=COMMAND_LOCK;
}
else if (!strncmp(temp_string,"UNLOCK",6)) {
command=COMMAND_UNLOCK;
}
else if (!strncmp(temp_string,"INIT",4)) {
command=COMMAND_INIT;
}
else if (!strncmp(temp_string,"RENAME",6)) {
command=COMMAND_RENAME;
}
else if (!strncmp(temp_string,"COPY",4)) {
command=COMMAND_COPY;
}
else if (!strncmp(temp_string,"DUMP",4)) {
command=COMMAND_DUMP;
}
else {
display_help(argv[0]);
goto exit_program;
}
/* get argument 1, which is image name */
strncpy(image,argv[1],BUFSIZ);
dos_fd=open(image,O_RDWR);
if (dos_fd<0) {
printf("Error opening disk_image: %s\n",image);
exit(4);
}
switch(command) {
/* Load a file from disk image to local machine */
case COMMAND_LOAD:
/* check and make sure we have apple_filename */
if (argc<4) {
printf("Error! Need apple file_name\n");
printf("%s %s LOAD apple_filename\n",argv[0],image);
goto exit_and_close;
}
/* Truncate filename if too long */
if (strlen(argv[3])>30) {
printf("Warning! Truncating %s to 30 chars\n",argv[3]);
}
strncpy(apple_filename,argv[3],30);
apple_filename[30]='\0';
/* get output filename */
if (argc==5) {
strncpy(output_filename,argv[4],BUFSIZ);
}
else {
strncpy(output_filename,apple_filename,30);
}
/* get the entry/track/sector for file */
catalog_entry=dos33_check_file_exists(dos_fd,
apple_filename,
FILE_NORMAL);
if (catalog_entry<0) {
printf("Error! %s not found!\n",apple_filename);
goto exit_and_close;
}
dos33_load_file(dos_fd,catalog_entry,output_filename);
break;
case COMMAND_CATALOG:
/* get first catalog */
catalog_entry=dos33_get_catalog_ts(dos_fd);
printf("\nDISK VOLUME %i\n\n",sector_buffer[VTOC_DISK_VOLUME]);
while(catalog_entry>0) {
catalog_entry=dos33_find_next_file(dos_fd,catalog_entry);
if (catalog_entry>0) {
dos33_print_file_info(dos_fd,catalog_entry);
catalog_entry+=(1<<16);
/* dos33_find_next_file() handles wrapping issues */
}
}
printf("\n");
break;
case COMMAND_SAVE:
/* argv3 == type == A,B,T,I,N,L etc */
/* argv4 == name of local file */
/* argv5 == optional name of file on disk image */
if (argc<5) {
printf("Error! Need type and file_name\n");
printf("%s %s SAVE type file_name apple_filename\n",
argv[0],image);
goto exit_and_close;
}
type=argv[3][0];
if (argc==6) {
if (strlen(argv[5])>30) {
printf("Warning! Truncating filename to 30 chars!\n");
}
strncpy(apple_filename,argv[5],30);
apple_filename[30]=0;
}
else {
/* If no filename specified for apple name */
/* Then use the input name. Note, we strip */
/* everything up to the last slash so useless */
/* path info isn't used */
{
char *temp;
temp=argv[4]+(strlen(argv[4])-1);
while(temp!=argv[4]) {
temp--;
if (*temp == '/') {
temp++;
break;
}
}
if (strlen(temp)>30) {
printf("Warning! Truncating filename to 30 chars!\n");
}
strncpy(apple_filename,temp,30);
apple_filename[30]=0;
}
}
catalog_entry=dos33_check_file_exists(dos_fd,apple_filename,
FILE_NORMAL);
if (catalog_entry>=0) {
printf("Warning! %s exists!\n",apple_filename);
printf("Over-write (y/n)?");
fgets(temp_string,BUFSIZ,stdin);
if (temp_string[0]!='y') {
printf("Exiting early...\n");
goto exit_and_close;
}
printf("Deleting previous version...\n");
dos33_delete_file(dos_fd,catalog_entry);
}
dos33_add_file(dos_fd,type,argv[4],apple_filename);
break;
case COMMAND_DELETE:
if (argc<4) {
printf("Error! Need file_name\n");
printf("%s %s DELETE apple_filename\n",argv[0],image);
goto exit_and_close;
}
catalog_entry=dos33_check_file_exists(dos_fd,argv[3],FILE_NORMAL);
if (catalog_entry<0) {
printf("Error! File %s does not exist\n",argv[3]);
goto exit_and_close;
}
dos33_delete_file(dos_fd,catalog_entry);
break;
case COMMAND_DUMP:
printf("Dumping %s!\n",argv[1]);
dos33_dump(dos_fd);
break;
case COMMAND_LOCK:
case COMMAND_UNLOCK:
/* check and make sure we have apple_filename */
if (argc<4) {
printf("Error! Need apple file_name\n");
printf("%s %s LOCK apple_filename\n",argv[0],image);
goto exit_and_close;
}
/* Truncate filename if too long */
if (strlen(argv[3])>30) {
printf("Warning! Truncating %s to 30 chars\n",argv[3]);
}
strncpy(apple_filename,argv[3],30);
apple_filename[30]='\0';
/* get the entry/track/sector for file */
catalog_entry=dos33_check_file_exists(dos_fd,
apple_filename,
FILE_NORMAL);
if (catalog_entry<0) {
printf("Error! %s not found!\n",apple_filename);
goto exit_and_close;
}
dos33_lock_file(dos_fd,catalog_entry,command==COMMAND_LOCK);
break;
case COMMAND_RENAME:
/* check and make sure we have apple_filename */
if (argc<5) {
printf("Error! Need two filenames\n");
printf("%s %s LOCK apple_filename_old apple_filename_new\n",
argv[0],image);
goto exit_and_close;
}
/* Truncate filename if too long */
if (strlen(argv[3])>30) {
printf("Warning! Truncating %s to 30 chars\n",argv[3]);
}
strncpy(apple_filename,argv[3],30);
apple_filename[30]='\0';
/* Truncate filename if too long */
if (strlen(argv[4])>30) {
printf("Warning! Truncating %s to 30 chars\n",argv[4]);
}
strncpy(new_filename,argv[4],30);
new_filename[30]='\0';
/* get the entry/track/sector for file */
catalog_entry=dos33_check_file_exists(dos_fd,
apple_filename,
FILE_NORMAL);
if (catalog_entry<0) {
printf("Error! %s not found!\n",apple_filename);
goto exit_and_close;
}
dos33_rename_file(dos_fd,catalog_entry,new_filename);
break;
case COMMAND_UNDELETE:
/* check and make sure we have apple_filename */
if (argc<4) {
printf("Error! Need apple file_name\n");
printf("%s %s LOCK apple_filename\n",argv[0],image);
goto exit_and_close;
}
/* Truncate filename if too long */
/* what to do about last char ? */
if (strlen(argv[3])>30) {
printf("Warning! Truncating %s to 30 chars\n",argv[3]);
}
strncpy(apple_filename,argv[3],30);
apple_filename[30]='\0';
/* get the entry/track/sector for file */
catalog_entry=dos33_check_file_exists(dos_fd,
apple_filename,
FILE_DELETED);
if (catalog_entry<0) {
printf("Error! %s not found!\n",apple_filename);
goto exit_and_close;
}
dos33_undelete_file(dos_fd,catalog_entry,apple_filename);
break;
case COMMAND_INIT:
/* use common code from mkdos33fs? */
case COMMAND_COPY:
/* use temp file? Walking a sector at a time seems a pain */
default:
printf("Sorry, unsupported command\n");
goto exit_and_close;
}
exit_and_close:
close(dos_fd);
exit_program:
return 0;
}
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