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Tech Arsenal 1
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Tech Arsenal (Arsenal Computer).ISO
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unzip42.zip
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BUGS
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1992-03-19
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Bugs (real and/or imagined):
---------------------------
- pkbug error: zipfile with incorrect csize and/or ucsize--check for end of
compressed (csize) data in uncompression routines:
unimplod.c: while ((!zipeof) && ((outpos + outcnt) < ucsize)) {
unreduce.c: while (((outpos + outcnt) < ucsize) && (!zipeof)) {
(James Birdsall, Mark, bottom of BUGS.long)
- add SEGV signal handler to avoid core dumps (Jean-loup, BUGS.long)
- if PK signature not found, append .zip and try again without error
messages (Jean-loup, others, bottom of BUGS.long)
- stdlib.h non-existent some systems? (IBM BSD 4.3, Apollo Domain?)
- disk full: a few files clear some pointer; continuing beyond "Continue?"
prompt, regardless of answer, kills unzip--stack too small? (doesn't seem
to matter) Bug in MSC write() function? Subsequent write code isn't any
different from -t option, so unlikely to be bug in uncompress routines...
File descriptor bad/close() failure? (workaround: ^C at prompt)
- textfile conversions on a PC system add extra CR to lines which already have
CR/LF combo; probably don't work in all directions, either (Mac/Unix/...)
- compressed symlinks are allowed: revise symlink code
- malloc/free main storage as needed (esp. stack[])
- fix "no errors detected" message for errors occurring *before* extract_or_
test_files(); count errors? differentiate between errors and warnings?
- add new extended local header capability for piped zipfiles
Features (possible and/or definite):
-----------------------------------
- add loop (2 or 3) for multiple password attempts with decryption
- test/incorporate Martin Schulz optimization patch
- add -oo option (overwrite and override): no user queries (if bad password,
skip file; if disk full, take default action; if VMS special on non-VMS,
unpack anyway; etc.)
- add -Q[Q[Q]] option (quiet mode on comments, cautions, warnings and errors):
forget -oo, or make synonym? Default level -Q? Override with +Q? -Q# ?
- allow wildcards in zipfile name (loop through each one)
- build in capability to check text/binary type and warn if -a (if version
< 1.1 and not made on DOS--i.e., not early Info-ZIP versions)
- change use of __STDC__ to PROTO or something similar: too much awkwardness
- incorporate Atari patches
- modify set_file_time routines to share common code (macro?)
- use lrec.whatever instead of pInfo (crec), whenever possible (see next item)
- modify to decompress input stream if part of a pipe, but continue
using central directory if not (BIG job!)
- assembly-language version of CRC check; write unimplode in assembler?
- check for environment variable ("UNZIP") for default options--override
with +[options]
- -v#, -l# instead of "q"? combine with UNZIP variable
- add -i (ignore case for internal filename match) option? hmmmm...
- mapname() should be rewritten
- CP/M version (Jeffery Foy)
- VM/CMS version (Chua Kong Sian, others)
- MS-DOS Power C support (need predefined token: see ship 1.1)
- put man pages in more "proper" nroff format
- add OS/2 .INF format helpfiles for UnZip and ZipInfo