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#include "macunpack.h"
#ifdef ZMA
#include "globals.h"
#include "zma.h"
#include "crc.h"
#include "../fileio/machdr.h"
#include "../fileio/wrfile.h"
#include "../fileio/kind.h"
#include "../util/masks.h"
#include "../util/util.h"
extern char *malloc();
extern char *realloc();
extern void de_lzh();
/* We do allow for possible backpointing, so we allocate the archive in core */
static char *zma_archive;
static char *zma_current;
static char *zma_filestart;
static unsigned long zma_length;
static long zma_archlength;
static int zma_filehdr();
static void zma_folder();
static void zma_mooz();
static void zma_wrfile();
static void zma_nocomp();
static void zma_lzh();
void zma(start, length)
char *start;
unsigned long length;
{
struct fileHdr filehdr;
int i, toread;
if(length != 0) {
if(zma_archlength < length) {
if(zma_archlength == 0) {
zma_archive = malloc((unsigned)length);
} else {
zma_archive = realloc(zma_archive, (unsigned)length);
}
zma_archlength = length;
if(zma_archive == NULL) {
(void)fprintf(stderr, "Insufficient memory, aborting\n");
exit(1);
}
}
if(fread(zma_archive, 1, (int)length, infp) != length) {
(void)fprintf(stderr, "Can't read archive.\n");
#ifdef SCAN
do_error("macunpack: Can't read archive");
#endif /* SCAN */
exit(1);
}
zma_length = get4(zma_archive + ZMAHDRS + 1);
if(zma_length != length) {
(void)fprintf(stderr, "Archive length mismatch.\n");
#ifdef SCAN
do_error("macunpack: Archive length mismatch");
#endif /* SCAN */
exit(1);
}
} else {
zma_length = get4(start + ZMAHDRS + 1);
if(zma_archlength < zma_length) {
if(zma_archlength == 0) {
zma_archive = malloc((unsigned)zma_length);
} else {
zma_archive = realloc(zma_archive, (unsigned)zma_length);
}
zma_archlength = zma_length;
if(zma_archive == NULL) {
(void)fprintf(stderr, "Insufficient memory, aborting\n");
exit(1);
}
}
if(zma_archive == NULL) {
(void)fprintf(stderr, "Insufficient memory, aborting\n");
exit(1);
}
for(i = 0; i <= ZMAHDRS2; i++) {
zma_archive[i] = start[i];
}
toread = zma_length - ZMAHDRS2 - 1;
if(fread(zma_archive + ZMAHDRS2 + 1, 1, toread, infp) != toread) {
(void)fprintf(stderr, "Can't read archive.\n");
#ifdef SCAN
do_error("macunpack: Can't read archive");
#endif /* SCAN */
exit(1);
}
}
/* Consistency checks */
if(zma_archive[0] != 0) {
(void)fprintf(stderr, "Not a \"Zoom\" archive after all, aborting\n");
exit(1);
}
if(strncmp(zma_archive + 1, ZMAHDR, ZMAHDRS)) {
(void)fprintf(stderr, "Not a \"Zoom\" archive after all, aborting\n");
exit(1);
}
zma_current = zma_archive + 8;
updcrc = arc_updcrc;
crcinit = arc_crcinit;
while(zma_current != zma_archive) {
if(zma_filehdr(&filehdr, 0) == -1) {
(void)fprintf(stderr, "Can't find file header./n");
#ifdef SCAN
do_error("macunpack: Can't find file header");
#endif /* SCAN */
exit(1);
}
zma_filestart = zma_current + filehdr.hlen;
if(filehdr.what == z_dir) {
zma_folder(filehdr);
} else {
zma_mooz(filehdr);
}
zma_current = zma_archive + filehdr.next;
}
}
static int zma_filehdr(f, skip)
struct fileHdr *f;
int skip;
{
register int i;
int n;
char ftype[5], fauth[5];
if(zma_current - zma_archive + Z_HDRSIZE > zma_length) {
return -1;
}
for(i = 0; i < INFOBYTES; i++) {
info[i] = '\0';
}
n = zma_current[Z_FNAME] & BYTEMASK;
if(n > F_NAMELEN) {
n = F_NAMELEN;
}
info[I_NAMEOFF] = n;
copy(info + I_NAMEOFF + 1, zma_current + Z_FNAME + 1, n);
transname(zma_current + Z_FNAME + 1, text, n);
f->what = zma_current[Z_WHAT];
f->rsrcLength = get4(zma_current + Z_URLEN);
f->dataLength = get4(zma_current + Z_UDLEN);
f->compRLength = get4(zma_current + Z_CRLEN);
f->compDLength = get4(zma_current + Z_CDLEN);
f->rsrcCRC = get2(zma_current + Z_RCRC);
f->dataCRC = get2(zma_current + Z_DCRC);
f->hlen = zma_current[Z_HLEN];
f->next = get4(zma_current + Z_NEXT);
if(f->what == z_dir) { /* A hack */
f->conts = get4(zma_current + Z_AUTH);
}
/* Set rsrc fork sizes correctly */
f->rsrcLength -= f->dataLength;
f->compRLength -= f->compDLength;
write_it = !skip;
if(f->what & 0x80) {
write_it = 0;
f->what = -f->what;
f->deleted = 1;
return 0;
}
f->deleted = 0;
if(list && !skip) {
do_indent(indent);
if(f->what == z_dir) {
(void)fprintf(stderr, "folder=\"%s\"", text);
} else {
transname(zma_current + Z_TYPE, ftype, 4);
transname(zma_current + Z_AUTH, fauth, 4);
(void)fprintf(stderr,
"name=\"%s\", type=%4.4s, author=%4.4s, data=%ld, rsrc=%ld",
text, ftype, fauth,
(long)f->dataLength, (long)f->rsrcLength);
}
switch(f->what) {
case z_plug:
(void)fputc('\n', stderr);
(void)fprintf(stderr,
"\tFile uses custom processing, cannot handle.\n");
write_it = 0;
return 0;
case z_dir:
case z_file:
case z_plain:
break;
default:
(void)fputc('\n', stderr);
(void)fprintf(stderr,
"\tEh, do not understand this (%d); skipped.\n", f->what);
write_it = 0;
return 0;
}
if(info_only) {
write_it = 0;
}
if(query) {
write_it = do_query();
} else {
(void)fputc('\n', stderr);
}
}
if(write_it) {
define_name(text);
if(f->what != z_dir) {
copy(info + I_TYPEOFF, zma_current + Z_TYPE, 4);
copy(info + I_AUTHOFF, zma_current + Z_AUTH, 4);
copy(info + I_FLAGOFF, zma_current + Z_FLAGS, 2);
copy(info + I_DLENOFF, zma_current + Z_UDLEN, 4);
put4(zma_current + Z_URLEN, f->rsrcLength);
copy(info + I_RLENOFF, zma_current + Z_URLEN, 4);
copy(info + I_CTIMOFF, zma_current + Z_MDATE, 4);
copy(info + I_MTIMOFF, zma_current + Z_MDATE, 4);
}
}
return 1;
}
static void zma_folder(fhdr)
struct fileHdr fhdr;
{
int i;
char loc_name[64];
struct fileHdr filehdr;
for(i = 0; i < 64; i++) {
loc_name[i] = text[i];
}
zma_current = zma_archive + fhdr.conts;
if(write_it || info_only) {
if(write_it) {
do_mkdir(text, info);
}
indent++;
while(zma_current != zma_archive) {
if(zma_filehdr(&filehdr, 0) == -1) {
(void)fprintf(stderr, "Can't find file header.\n");
#ifdef SCAN
do_error("macunpack: Can't find file header");
#endif /* SCAN */
exit(1);
}
zma_filestart = zma_current + filehdr.hlen;
if(filehdr.what == z_dir) {
zma_folder(filehdr);
} else {
zma_mooz(filehdr);
}
zma_current = zma_archive + filehdr.next;
}
if(write_it) {
enddir();
}
indent--;
if(list) {
do_indent(indent);
(void)fprintf(stderr, "leaving folder \"%s\"\n", loc_name);
}
}
}
static void zma_mooz(filehdr)
struct fileHdr filehdr;
{
unsigned long crc;
if(write_it) {
start_info(info, filehdr.rsrcLength, filehdr.dataLength);
}
if(verbose) {
(void)fprintf(stderr, "\tData: ");
}
if(write_it) {
start_data();
}
zma_wrfile(filehdr.compDLength, filehdr.dataLength, filehdr.what);
if(write_it) {
crc = (*updcrc)(INIT_CRC, out_buffer, filehdr.dataLength);
if(filehdr.dataCRC != crc) {
(void)fprintf(stderr,
"CRC error on data fork: need 0x%04x, got 0x%04x\n",
(int)filehdr.dataCRC, (int)crc);
#ifdef SCAN
do_error("macunpack: CRC error on data fork");
#endif /* SCAN */
exit(1);
}
}
if(verbose) {
(void)fprintf(stderr, ", Rsrc: ");
}
if(write_it) {
start_rsrc();
}
zma_wrfile(filehdr.compRLength, filehdr.rsrcLength, filehdr.what);
if(write_it) {
crc = (*updcrc)(INIT_CRC, out_buffer, filehdr.rsrcLength);
if(filehdr.rsrcCRC != crc) {
(void)fprintf(stderr,
"CRC error on resource fork: need 0x%04x, got 0x%04x\n",
(int)filehdr.rsrcCRC, (int)crc);
#ifdef SCAN
do_error("macunpack: CRC error on resource fork");
#endif /* SCAN */
exit(1);
}
end_file();
}
if(verbose) {
(void)fprintf(stderr, ".\n");
}
}
static void zma_wrfile(ibytes, obytes, type)
unsigned long ibytes, obytes;
char type;
{
if(ibytes == 0) {
if(verbose) {
(void)fprintf(stderr, "empty");
}
return;
}
switch(type) {
case z_plain: /* no compression */
if(verbose) {
(void)fprintf(stderr, "No compression");
}
if(write_it) {
zma_nocomp(ibytes);
}
break;
case z_file: /* lzh compression */
if(verbose) {
(void)fprintf(stderr,
"LZH compressed (%4.1f%%)", 100.0 * ibytes / obytes);
}
if(write_it) {
zma_lzh(ibytes);
}
break;
default:
(void)fprintf(stderr, "Unknown compression method %2x\n", type);
#ifdef SCAN
do_idf("", UNKNOWN);
#endif /* SCAN */
exit(1);
}
}
/*---------------------------------------------------------------------------*/
/* No compression */
/*---------------------------------------------------------------------------*/
static void zma_nocomp(ibytes)
unsigned long ibytes;
{
int n = ibytes;
char *ptr = out_buffer;
while(n-- > 0) {
*ptr++ = *zma_filestart++;
}
}
/*---------------------------------------------------------------------------*/
/* LZ compression plus Huffman encoding */
/*---------------------------------------------------------------------------*/
static void zma_lzh(ibytes)
unsigned long ibytes;
{
/* Controlled by ibutes only */
de_lzh((long)ibytes, (long)(-1), &zma_filestart, 13);
}
#else /* ZMA */
int zma; /* keep lint and some compilers happy */
#endif /* ZMA */
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.