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| author | Denys Vlasenko | 2016-04-18 01:14:05 +0200 |
|---|---|---|
| committer | Denys Vlasenko | 2016-04-18 01:14:05 +0200 |
| commit | bca4deee8393395f77630ad320c306d06ea186ed (patch) | |
| tree | f5513ed12f015cdf8d2c5d35d1753a6f54e9a6f0 /archival | |
| parent | 0ccf52a9fb9fa2f76eacbb6f1ef8419220557a40 (diff) | |
| download | busybox-bca4deee8393395f77630ad320c306d06ea186ed.zip busybox-bca4deee8393395f77630ad320c306d06ea186ed.tar.gz | |
unzip: fix percent overflow; show "stored" files properly
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'archival')
| -rw-r--r-- | archival/unzip.c | 35 |
1 files changed, 29 insertions, 6 deletions
diff --git a/archival/unzip.c b/archival/unzip.c index b0a6ca8..7bf51f4 100644 --- a/archival/unzip.c +++ b/archival/unzip.c @@ -263,15 +263,18 @@ static uint32_t read_next_cdf(uint32_t cdf_offset, cdf_header_t *cdf_ptr) xlseek(zip_fd, cdf_offset + 4, SEEK_SET); xread(zip_fd, cdf_ptr->raw, CDF_HEADER_LEN); FIX_ENDIANNESS_CDF(*cdf_ptr); - dbg("file_name_length:%u", (unsigned)cdf_ptr->formatted.file_name_length); - dbg("extra_field_length:%u", (unsigned)cdf_ptr->formatted.extra_field_length); - dbg("file_comment_length:%u", (unsigned)cdf_ptr->formatted.file_comment_length); + dbg(" file_name_length:%u extra_field_length:%u file_comment_length:%u", + (unsigned)cdf_ptr->formatted.file_name_length, + (unsigned)cdf_ptr->formatted.extra_field_length, + (unsigned)cdf_ptr->formatted.file_comment_length + ); cdf_offset += 4 + CDF_HEADER_LEN + cdf_ptr->formatted.file_name_length + cdf_ptr->formatted.extra_field_length + cdf_ptr->formatted.file_comment_length; } + dbg("Returning file position to 0x%"OFF_FMT"x", org); xlseek(zip_fd, org, SEEK_SET); return cdf_offset; }; @@ -614,6 +617,11 @@ int unzip_main(int argc, char **argv) bb_error_msg_and_die("can't find file table"); } #endif + dbg("File cmpsize:0x%x extra_len:0x%x ucmpsize:0x%x", + (unsigned)zip_header.formatted.cmpsize, + (unsigned)zip_header.formatted.extra_len, + (unsigned)zip_header.formatted.ucmpsize + ); /* Read filename */ free(dst_fn); @@ -646,16 +654,31 @@ int unzip_main(int argc, char **argv) (dostime & 0x0000f800) >> 11, (dostime & 0x000007e0) >> 5, dst_fn); - total_usize += zip_header.formatted.ucmpsize; } else { unsigned long percents = zip_header.formatted.ucmpsize - zip_header.formatted.cmpsize; + if ((int32_t)percents < 0) + percents = 0; /* happens if ucmpsize < cmpsize */ percents = percents * 100; if (zip_header.formatted.ucmpsize) percents /= zip_header.formatted.ucmpsize; // " Length Method Size Ratio Date Time CRC-32 Name\n" // "-------- ------ ------- ----- ---- ---- ------ ----" - printf( "%8u Defl:N" "%9u%4u%% %02u-%02u-%02u %02u:%02u %08x %s\n", + printf( "%8u %s" "%9u%4u%% %02u-%02u-%02u %02u:%02u %08x %s\n", (unsigned)zip_header.formatted.ucmpsize, + zip_header.formatted.method == 0 ? "Stored" : "Defl:N", /* Defl is method 8 */ +/* TODO: show other methods? + * 1 - Shrunk + * 2 - Reduced with compression factor 1 + * 3 - Reduced with compression factor 2 + * 4 - Reduced with compression factor 3 + * 5 - Reduced with compression factor 4 + * 6 - Imploded + * 7 - Reserved for Tokenizing compression algorithm + * 9 - Deflate64 + * 10 - PKWARE Data Compression Library Imploding + * 11 - Reserved by PKWARE + * 12 - BZIP2 + */ (unsigned)zip_header.formatted.cmpsize, (unsigned)percents, (dostime & 0x01e00000) >> 21, @@ -665,9 +688,9 @@ int unzip_main(int argc, char **argv) (dostime & 0x000007e0) >> 5, zip_header.formatted.crc32, dst_fn); - total_usize += zip_header.formatted.ucmpsize; total_size += zip_header.formatted.cmpsize; } + total_usize += zip_header.formatted.ucmpsize; i = 'n'; } else if (dst_fd == STDOUT_FILENO) { /* Extracting to STDOUT */ |