ckolivas/lrzip
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Perform sanity testing on file information output which detects corrupted archives.

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ckolivas 2011-02-25 09:31:35 +11:00
parent 573aa534ac
commit 3a818196cc
1 changed files with 6 additions and 0 deletions
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6
main.c
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@ -528,9 +528,13 @@ next_chunk:
do { do {
i64 head_off; i64 head_off;
if (unlikely(last_head + ofs > infile_size))
failure("Offset greater than archive size, likely corrupted/truncated archive.\n");
if (unlikely(head_off = lseek(fd_in, last_head + ofs, SEEK_SET)) == -1) if (unlikely(head_off = lseek(fd_in, last_head + ofs, SEEK_SET)) == -1)
fatal("Failed to seek to header data in get_fileinfo\n"); fatal("Failed to seek to header data in get_fileinfo\n");
get_header_info(fd_in, &ctype, &c_len, &u_len, &last_head); get_header_info(fd_in, &ctype, &c_len, &u_len, &last_head);
if (unlikely(last_head < 0))
failure("Last head entry negative, likely corrupted archive.\n");
print_output("%d\t", block); print_output("%d\t", block);
if (ctype == CTYPE_NONE) if (ctype == CTYPE_NONE)
print_output("none"); print_output("none");
@ -561,6 +565,8 @@ next_chunk:
ofs++; ofs++;
if (ofs < infile_size - MD5_DIGEST_SIZE) if (ofs < infile_size - MD5_DIGEST_SIZE)
goto next_chunk; goto next_chunk;
if (unlikely(ofs > infile_size))
failure("Offset greater than archive size, likely corrupted/truncated archive.\n");
print_output("Rzip compression: %.1f%% %lld / %lld\n", print_output("Rzip compression: %.1f%% %lld / %lld\n",
(double)utotal / (double)(expected_size / 100), (double)utotal / (double)(expected_size / 100),
utotal, expected_size); utotal, expected_size);