/* decompress a open file. Call fatal() on error
return the number of bytes that have been retrieved
*/
off_t runzip_fd(int fd_in, int fd_out, int fd_hist, off_t expected_size, int out_is_pipe, int in_is_pipe)
{
off_t total = 0, l;
while (total < expected_size || expected_size==0) {
l = runzip_chunk(fd_in, fd_out, fd_hist, out_is_pipe, in_is_pipe);
total += l;
if( l == 0)
break;
}
return total;
}
/* Decompress an open file. Call fatal_return(() on error
return the number of bytes that have been retrieved
*/
i64 runzip_fd(rzip_control *control, int fd_in, int fd_out, int fd_hist, i64 expected_size)
{
uchar md5_stored[MD5_DIGEST_SIZE];
struct timeval start,end;
i64 total = 0, u;
double tdiff;
if (!NO_MD5)
md5_init_ctx (&control->ctx);
gettimeofday(&start,NULL);
do {
u = runzip_chunk(control, fd_in, expected_size, total);
if (unlikely(u == -1)) {
print_err("Failed to runzip_chunk in runzip_fd\n");
return -1;
}
total += u;
if (TMP_OUTBUF) {
if (unlikely(!flush_tmpoutbuf(control))) {
print_err("Failed to flush_tmpoutbuf in runzip_fd\n");
return -1;
}
} else if (STDOUT) {
if (unlikely(!dump_tmpoutfile(control, fd_out))) {
print_err("Failed to dump_tmpoutfile in runzip_fd\n");
return -1;
}
}
if (TMP_INBUF)
clear_tmpinbuf(control);
else if (STDIN && !DECOMPRESS) {
if (unlikely(!clear_tmpinfile(control))) {
print_err("Failed to clear_tmpinfile in runzip_fd\n");
return -1;
}
}
} while (total < expected_size || (!expected_size && !control->eof));
gettimeofday(&end,NULL);
if (!ENCRYPT) {
tdiff = end.tv_sec - start.tv_sec;
if (!tdiff)
tdiff = 1;
print_progress("\nAverage DeCompression Speed: %6.3fMB/s\n",
(total / 1024 / 1024) / tdiff);
}
if (!NO_MD5) {
int i,j;
md5_finish_ctx (&control->ctx, control->md5_resblock);
if (HAS_MD5) {
i64 fdinend = seekto_fdinend(control);
if (unlikely(fdinend == -1))
failure_return(("Failed to seekto_fdinend in rzip_fd\n"), -1);
if (unlikely(seekto_fdin(control, fdinend - MD5_DIGEST_SIZE) == -1))
failure_return(("Failed to seekto_fdin in rzip_fd\n"), -1);
if (unlikely(read_1g(control, fd_in, md5_stored, MD5_DIGEST_SIZE) != MD5_DIGEST_SIZE))
fatal_return(("Failed to read md5 data in runzip_fd\n"), -1);
if (ENCRYPT)
if (unlikely(!lrz_decrypt(control, md5_stored, MD5_DIGEST_SIZE, control->salt_pass)))
return -1;
for (i = 0; i < MD5_DIGEST_SIZE; i++)
if (md5_stored[i] != control->md5_resblock[i]) {
print_output("MD5 CHECK FAILED.\nStored:");
for (j = 0; j < MD5_DIGEST_SIZE; j++)
print_output("%02x", md5_stored[j] & 0xFF);
print_output("\nOutput file:");
for (j = 0; j < MD5_DIGEST_SIZE; j++)
print_output("%02x", control->md5_resblock[j] & 0xFF);
failure_return(("\n"), -1);
}
}
if (HASH_CHECK || MAX_VERBOSE) {
print_output("MD5: ");
for (i = 0; i < MD5_DIGEST_SIZE; i++)
print_output("%02x", control->md5_resblock[i] & 0xFF);
print_output("\n");
}
if (CHECK_FILE) {
FILE *md5_fstream;
int i, j;
if (TMP_OUTBUF)
close_tmpoutbuf(control);
memcpy(md5_stored, control->md5_resblock, MD5_DIGEST_SIZE);
if (unlikely(seekto_fdhist(control, 0) == -1))
fatal_return(("Failed to seekto_fdhist in runzip_fd\n"), -1);
if (unlikely((md5_fstream = fdopen(fd_hist, "r")) == NULL))
fatal_return(("Failed to fdopen fd_hist in runzip_fd\n"), -1);
if (unlikely(md5_stream(md5_fstream, control->md5_resblock)))
fatal_return(("Failed to md5_stream in runzip_fd\n"), -1);
/* We don't close the file here as it's closed in main */
for (i = 0; i < MD5_DIGEST_SIZE; i++)
if (md5_stored[i] != control->md5_resblock[i]) {
print_output("MD5 CHECK FAILED.\nStored:");
for (j = 0; j < MD5_DIGEST_SIZE; j++)
print_output("%02x", md5_stored[j] & 0xFF);
print_output("\nOutput file:");
for (j = 0; j < MD5_DIGEST_SIZE; j++)
print_output("%02x", control->md5_resblock[j] & 0xFF);
failure_return(("\n"), -1);
}
print_output("MD5 integrity of written file matches archive\n");
if (!HAS_MD5)
print_output("Note this lrzip archive did not have a stored md5 value.\n"
"The archive decompression was validated with crc32 and the md5 hash was "
"calculated on decompression\n");
}
}
return total;
}
