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#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#ifndef VERSION
#define VERSION "???"
#endif
#define SELF "atr2xfd"
#define CHECK "atrcheck"
int main(int argc, char **argv) {
char *type;
char *self = SELF;
struct stat st;
char infile[4096], outfile[4096];
unsigned char buf[16];
FILE *in, *out;
int i, paras, hparas, secsize, seccount;
int checkonly = 0, bytes = 0;
if(strstr(argv[0], CHECK)) {
self = CHECK;
checkonly = 1;
}
if(argc < 2 || argc > 3) {
fprintf(stderr,
"%s v" VERSION " by B. Watson (WTFPL)\n", self);
fprintf(stderr,
"Usage: %s input.xfd%s\n",
self,
(checkonly ? "" : " [output.atr]"));
exit(1);
}
strcpy(infile, argv[1]);
if(argc == 3) {
strcpy(outfile, argv[2]);
if(checkonly)
fprintf(stderr,
"%s: output file not used with %s (ignoring it).\n",
self, self);
} else if(strcmp(infile, "-") == 0) {
strcpy(outfile, "-");
} else {
char *p;
strcpy(outfile, argv[1]);
p = strstr(outfile, ".atr");
if(!p) p = strstr(outfile, ".ATR");
if(!p) p = outfile + strlen(outfile);
strcpy(p, ".xfd");
}
if(!checkonly)
fprintf(stderr, "%s: input '%s', output '%s'\n", self, infile, outfile);
if(strcmp(infile, "-") == 0) {
in = stdin;
} else {
if( !(in = fopen(infile, "rb")) ) {
fprintf(stderr, "%s: (fatal) can't read %s: %s\n",
self, infile, strerror(errno));
exit(1);
}
}
if(fstat(fileno(in), &st)) {
fprintf(stderr, "%s: (fatal) can't stat %s: %s\n",
self, infile, strerror(errno));
exit(1);
}
/* A few sanity checks... */
if(st.st_size < 400) {
fprintf(stderr,
"%s: (fatal) %s too small to be an ATR image (<400 bytes)\n",
self, infile);
exit(2);
}
if(st.st_size % 128 == 0 ) {
fprintf(stderr,
"%s: (fatal) %s looks like an XFD image, not an ATR\n",
self, infile);
exit(2);
}
if( (st.st_size - 16) % 128 != 0 ) {
fprintf(stderr,
"%s: (fatal) %s not a valid ATR image (not an even number "
"of sectors)\n",
self, infile);
exit(2);
}
if(st.st_size > (65535 * 256)) {
fprintf(stderr,
"%s: (fatal) %s too large to be an ATR image (>16M)\n",
self, infile);
exit(2);
}
paras = st.st_size / 16 - 1;
fprintf(stderr, "%s: size is %d 16-byte paragraphs\n", self, paras);
if(fread(buf, 1, 16, in) != 16) {
fprintf(stderr,
"%s: (fatal) can't read ATR header from %s: %s\n",
self, infile, strerror(errno));
exit(1);
}
if( !(buf[0] == 0x96 && buf[1] == 0x02) ) {
fprintf(stderr,
"%s: (fatal) %s not an ATR file (no NICKATARI signature)!\n",
self, infile);
exit(2);
}
secsize = buf[4] + (buf[5] << 8);
if( !(secsize == 128 || secsize == 256) ) {
fprintf(stderr,
"%s: (fatal) %s has invalid sector size %d\n",
self, infile, secsize);
exit(2);
}
if(secsize == 128)
seccount = (st.st_size - 16) / secsize;
else {
seccount = (st.st_size - 400) / secsize + 3;
if((st.st_size - 16) % 256 != 128)
fprintf(stderr, "%s: partial sector at end of DD image, might "
"be a truncated or bogus ATR.\n", self);
}
fprintf(stderr,
"%s: sectors: %d, sector size: %d bytes",
self, seccount, secsize);
if(secsize == 256)
fprintf(stderr, " (first 3 sectors are 128 bytes)");
fputc('\n', stderr);
if(secsize == 128) {
if(seccount < 720)
type = "short SS/SD image, <90K";
else if(seccount == 720)
type = "standard SS/SD image, 90K";
else if(seccount == 1040)
type = "1050 SS/ED image, 130K";
else if(seccount == 1440)
type = "XF551 DS/SD image, 180K";
else
type = "high-capacity floppy or hard disk image, SD";
} else {
if(seccount < 720)
type = "short SS/DD image, <180K";
else if(seccount == 720)
type = "standard SS/DD image, 180K";
else if(seccount == 1440)
type = "XF551 DS/DD or ATR8000 SS/QD image, 360K";
else if(seccount == 2880)
type = "ATR8000 DS/QD or SS/PC image, 720K";
else if(seccount == 5760)
type = "ATR8000 PC 1.44M image, 1440K";
else
type = "high-capacity floppy or hard disk image, DD";
}
fprintf(stderr, "%s: %s is a %s\n", self, infile, type);
fprintf(stderr, "%s: ATR image OK (no fatal errors).\n", self);
hparas = buf[2] + (buf[3] << 8) + (buf[6] << 16);
if(hparas != paras) {
/* this is only a fatal error if checkonly is true */
fprintf(stderr,
"%s: (%s) %s file size (%d paragraphs) doesn't agree with "
"ATR header (%d paragraphs). File may be truncated or corrupt.\n",
self,
(checkonly ? "fatal" : "warning"),
infile, paras, hparas);
if(checkonly)
exit(1);
fprintf(stderr,
"%s: Using actual file size for XFD image; expect trouble.\n",
self);
}
if(checkonly)
exit(0);
/* Only open the output file after the ATR is known to be good */
if(strcmp(outfile, "-") == 0) {
out = stdout;
} else {
if( !(out = fopen(outfile, "wb")) ) {
fprintf(stderr,
"%s: (fatal) can't write %s: %s\n",
self, outfile, strerror(errno));
exit(1);
}
}
/* copy the data */
while( (i = fgetc(in)) != EOF ) {
fputc(i, out);
bytes++;
}
/* fputc() returns EOF on error *or* EOF;
check for I/O errors, return 1 if so */
i = 0;
if(ferror(in)) {
i = 1;
fprintf(stderr,
"%s: error reading %s: %s\n", self, infile, strerror(errno));
}
if(ferror(out)) {
i = 1;
fprintf(stderr,
"%s: error writing %s: %s\n", self, outfile, strerror(errno));
}
fclose(in);
fclose(out);
if(!i)
fprintf(stderr, "%s: XFD image OK, wrote %d bytes\n", self, bytes);
return i;
}
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