static void de_run_t64(deark *c, de_module_params *mparams)
{
lctx *d = NULL;
de_int64 pos;
de_int64 i;
d = de_malloc(c, sizeof(lctx));
pos = 32;
d->version = de_getui16le(pos);
de_dbg(c, "version: 0x%04x\n", (int)d->version);
if(d->version!=0x100 && d->version!=0x101) {
de_warn(c, "Unexpected version number. This might not be a T64 file.\n");
}
d->max_dir_entries = de_getui16le(pos+2);
d->used_dir_entries = de_getui16le(pos+4);
de_dbg(c, "max dir entries = %d, files = %d\n", (int)d->max_dir_entries, (int)d->used_dir_entries);
pos += 32;
for(i=0; i<d->max_dir_entries; i++) {
do_dir_entry(c, d, i, pos+32*i);
}
de_free(c, d);
}
void process_directory(const u8* base, const char* dir, u32 offset, u32 size,
const char* path)
{
struct cramfs_inode* de;
char* name;
int namelen;
u32 current=offset;
u32 dirend=offset+size;
// Do files
while (current < dirend) {
u32 nextoffset;
de=(struct cramfs_inode*)(base+current);
namelen=de->namelen<<2;
nextoffset=current+sizeof(struct cramfs_inode)+namelen;
name=(char*)(de+1);
while (1) {
assert(namelen!=0);
if (name[namelen-1])
break;
namelen--;
}
do_file_entry(base, dir, path, name, namelen, de);
current=nextoffset;
}
// Recurse into directories
current=offset;
while (current < dirend) {
u32 nextoffset;
de=(struct cramfs_inode*)(base+current);
namelen=de->namelen<<2;
nextoffset=current+sizeof(struct cramfs_inode)+namelen;
name=(char*)(de+1);
while (1) {
assert(namelen!=0);
if (name[namelen-1])
break;
namelen--;
}
do_dir_entry(base, dir, path, name, namelen, de);
current=nextoffset;
}
}
int uncramfs(char const *dirname, char const *imagefile) {
struct stat st;
int fd;
size_t fslen_ub;
u8 const *rom_image;
struct cramfs_super const *sb;
// Check the directory
if (access(dirname, W_OK) == -1) {
if (errno != ENOENT) {
perror(dirname);
exit(1);
}
}
// Check the image file
if (stat(imagefile, &st) == -1) {
perror(imagefile);
exit(1);
}
// Map the cramfs image
fd = open(imagefile, O_RDONLY);
fslen_ub = st.st_size;
rom_image = mmap(0, fslen_ub, PROT_READ, MAP_SHARED, fd, 0);
if (rom_image == MAP_FAILED) {
perror("Mapping cramfs file");
exit(1);
}
sb = (struct cramfs_super const *)(rom_image);
// Check cramfs magic number and signature
if (CRAMFS_MAGIC != sb->magic || 0 != memcmp(sb->signature, CRAMFS_SIGNATURE, sizeof(sb->signature))) {
fprintf(stderr, "The image file doesn't have cramfs signatures\n");
exit(1);
}
// Set umask to 0 to let the image modes shine through
umask(0);
clearstats();
// Start doing...
do_file_entry(rom_image, dirname, "", "", 0, &sb->root);
do_dir_entry(rom_image, dirname, "", "", 0, &sb->root);
return 0;
}
/*
* Usage:
*
* uncramfs directory-name outfile
*
* where "directory-name" is simply the root of the directory
* tree that we want to expand the compressed filesystem into.
*/
int main(int argc, char **argv)
{
char const* dirname;
char const* imagefile;
struct stat st;
int fd;
size_t fslen_ub;
u8 const* rom_image;
struct cramfs_super const* sb;
int i;
// Check the program usage
if (argc)
progname = argv[0];
if (argc != 3 && argc != 5 && argc != 7)
usage();
if (argc == 3) {
dirname=argv[1];
imagefile=argv[2];
} else if (argc == 5) {
if (strcmp(argv[1],"-d")==0) {
opt_devfile = argv[2];
} else if (strcmp(argv[1],"-m")==0) {
opt_idsfile = argv[2];
} else
usage();
dirname=argv[3];
imagefile=argv[4];
} else {
if (strcmp(argv[1],"-d")==0) {
opt_devfile = argv[2];
} else if (strcmp(argv[1],"-m")==0) {
opt_idsfile = argv[2];
} else
usage();
if (strcmp(argv[3],"-d")==0 && !opt_devfile) {
opt_devfile = argv[4];
} else if (strcmp(argv[3],"-m")==0 && !opt_idsfile) {
opt_idsfile = argv[4];
} else
usage();
dirname=argv[5];
imagefile=argv[6];
}
// Check the directory
if (access(dirname, W_OK) == -1) {
if (errno != ENOENT ) {
perror(dirname);
exit(1);
}
}
// Check the image file
if (stat(imagefile, &st) == -1) {
perror(imagefile);
exit(1);
}
// Map the cramfs image
fd = open(imagefile, O_RDONLY);
fslen_ub = st.st_size;
rom_image = mmap(0, fslen_ub, PROT_READ, MAP_SHARED, fd, 0);
if (rom_image == MAP_FAILED) {
perror("Mapping cramfs file");
exit(1);
}
sb=(struct cramfs_super const*)(rom_image);
// Check cramfs magic number and signature
if (CRAMFS_MAGIC != sb->magic ||
0 != memcmp(sb->signature, CRAMFS_SIGNATURE, sizeof(sb->signature))) {
fprintf(stderr,"The image file doesn't have cramfs signatures\n");
exit(1);
}
// Set umask to 0 to let the image modes shine through
umask(0);
// Print some reassuring blurb
printf("[Volume size: 0x%x]\n", fslen_ub);
printf("[Volume serial: ");
for (i=0; i< sizeof(sb->fsid); ++i)
printf("%02x", sb->fsid[i]);
printf("]\n");
printf("[Volume name: %s]\n", sb->name);
printf("\n");
clearstats();
// Start doing...
printf("do file entry \n");
do_file_entry(rom_image, dirname, "", "", 0, &sb->root);
printf("do dir entry\n");
do_dir_entry(rom_image, dirname, "", "", 0, &sb->root);
//process_directory(rom_image, dirname, sb->root.offset<<2, sb->root.size, ".");
printstats();
return 0;
}
