#include <unistd.h>
#include <errno.h>
#include <string.h>
+#include <time.h>
+#include <utime.h>
+#include "implode.h"
#include "installshield_z.h"
static const size_t BUFFER_SIZE = 0x4000;
);
}
+time_t msdos2unixtime(uint16_t time, uint16_t date)
+{
+ if (debug) printf("Date: %04x Time %04x\n", date, time);
+ struct tm dt;
+ dt.tm_year =((date & 0xFE00) >> 9) + 80;
+ dt.tm_mon = (date & 0x01E0) >> 5;
+ dt.tm_mday = (date & 0x001F) >> 0;
+ dt.tm_hour = (time & 0xF800) >> 11;
+ dt.tm_min = (time & 0x07E0) >> 5;
+ dt.tm_sec = (time & 0x001F) >> 0;
+
+ return mktime(&dt);
+}
+
int
headers_decode(int z_fd)
{
offset = lseek(z_fd, offset, SEEK_SET);
if ((qty = read(z_fd, header, Z_FILE_HEADER_BYTES))< Z_FILE_HEADER_BYTES)
fprintf(stderr, "Warning: Tried to read %ld header bytes but only got %ld. Will do my best\n", Z_FILE_HEADER_BYTES, qty);
+ time_t timestamp = msdos2unixtime(header->timestamp, header->datestamp);
+ char *datetime = ctime(×tamp);
printf("Magic %08x\n", header->magic);
- printf("CRC32 %08x\n", header->__crc32);
+ printf("Timestamp %s" , datetime);
printf("File size %08x\n", header->file_bytes);
printf("Payload size %08x\n", header->payload_bytes);
printf("Directories offset %08x\n", header->directories_offset);
printf("Directory entries: %d ( %08x bytes @ 0x%08x)\n", header->directories_entries, header->directories_bytes, header->directories_offset);
- struct ll_dirents dirents[header->directories_entries];
+ struct dirent dirents[header->directories_entries];
for (int i = 0; i < header->directories_entries; ++i) {
printf(" Entry %4d Size %x @ %08x \"%s\"\n", i, p->entry_bytes, header->directories_offset + (uint32_t)((void *)p - (void *)dirent), p->name);
dirents[i].entry = p;
printf("File entries: %d ( %08x bytes @ 0x%08x)\n", header->files_entries, header->files_bytes, header->files_offset);
for (int i = 0; i < header->files_entries; ++i) {
- printf(" Entry %4d uses %06x bytes @ %08x. file-size %08x (payload %08x @ %08x)", i, q->entry_bytes, header->files_offset +(uint32_t)((void *)q - (void *)fileent), q->file_bytes, q->payload_bytes, q->payload_offset);
+ timestamp = msdos2unixtime(q->timestamp, q->datestamp);
+ datetime = ctime(×tamp);
+ printf(" Entry %4d uses %06x bytes @ %08x. Date %s File-size %08x (payload %08x @ %08x)", i, q->entry_bytes, header->files_offset +(uint32_t)((void *)q - (void *)fileent), datetime, q->file_bytes, q->payload_bytes, q->payload_offset);
if (debug) {
printf(" next @ %08x", q->payload_offset + q->payload_bytes);
unsigned int z_filename_len = strlen(q->name) + 4;
char z_filename[z_filename_len];
strncpy(z_filename, q->name, z_filename_len);
- strncat(z_filename, ".z", 2);
+ strncat(z_filename, ".z", 3);
+
+ char filepath[strlen(dir_name) + z_filename_len];
+ strncpy(filepath, dir_name, strlen(dir_name) + 1);
+ strncat(filepath, "/", 2);
+ strncat(filepath, z_filename, z_filename_len);
if (debug)
printf(" Creating payload file '%s/%s'\n", dir_name, z_filename);
if ((offset = lseek(z_fd, q->payload_offset, SEEK_SET)) == q->payload_offset) {
void *buffer;
if ((buffer = calloc(q->payload_bytes, 1)) != 0) {
+ struct utimbuf filetime;
+ filetime.actime = timestamp;
+ filetime.modtime = timestamp;
int pay_fd;
if ((pay_fd = openat(dir_fd, z_filename, O_WRONLY | O_CREAT | O_TRUNC, 0644))) {
ssize_t z_qty, pay_qty;
} else
fprintf(stderr, "Error: whilst reading payload expected %d bytes but read %ld\n", q->payload_bytes, z_qty);
close(pay_fd);
+ if(utime(filepath, &filetime) == -1) {
+ fprintf(stderr, "Error: unable to set timestamp on '%s' (%d) ", filepath, errno);
+ perror(NULL);
+ }
+ }
+ if (q->payload_bytes >= 4) {
+ uint8_t comp_type = *(uint8_t *)buffer;
+ uint8_t dict_size = *(uint8_t *)(buffer + 1);
+ if (comp_type >= IMPLODE_BINARY && comp_type <= IMPLODE_ASCII && dict_size >= IMPLODE_DICT_1K && dict_size <= IMPLODE_DICT_4K) {
+ void * buffer_decomp;
+ if ((buffer_decomp = calloc(q->file_bytes, 1)) != 0) {
+ uint32_t decomp_bytes = q->file_bytes;
+ if (explode(buffer, q->payload_bytes, buffer_decomp, &decomp_bytes)) {
+ if (decomp_bytes > q->file_bytes) {
+ fprintf(stderr, "Expected %d uncompressed bytes but got %d\n", q->file_bytes, decomp_bytes);
+ }
+ int decomp_fd;
+ if ((decomp_fd = openat(dir_fd, q->name, O_WRONLY | O_CREAT | O_TRUNC, 0644))) {
+ ssize_t decomp_qty;
+ if (debug)
+ printf("Creating uncompressed file '%s/%s'\n",dir_name, q->name);
+ if ((decomp_qty = write(decomp_fd, buffer_decomp, q->file_bytes)) != q->file_bytes)
+ fprintf(stderr, "Error: whilst writing decompressed data expected %d bytes but wrote %ld\n", q->file_bytes, decomp_qty);
+ close(decomp_fd);
+ filepath[strlen(filepath) - 2] = 0;
+ if(utime(filepath, &filetime) == -1) {
+ fprintf(stderr, "Error: unable to set timestamp on '%s' (%d) ", filepath, errno);
+ perror(NULL);
+ }
+ }
+ } else {
+ fprintf(stderr, "Error: failed to decompress '%s', payload: %d decompressed: %d\n", q->name, q->payload_bytes, decomp_bytes);
+ }
+ free(buffer_decomp);
+ } else {
+ fprintf(stderr, "Error: unable to allocate %d bytes for decompression buffer\n", q->file_bytes);
+ }
+ } else {
+ fprintf(stderr, "Does not look like TTComp compressed data. header: %04x\n", *(uint16_t *)buffer);
+ }
+ } else {
+ fprintf(stderr, "Error: payload %d bytes smaller than minimum allowed TTComp of 4\n", q->payload_bytes);
}
free(buffer);
}
projects / installshield_z.git / blobdiff