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Comparing Convert-UUlib/Changes (file contents):
Revision 1.16 by root, Sun Oct 13 13:52:59 2002 UTC vs.
Revision 1.81 by root, Sat Dec 12 10:48:39 2020 UTC

1Revision history for Perl extension Convert::UUlib. 1Revision history for Perl extension Convert::UUlib.
2 2
3TODO: biggest timesinks: FP_fgets/getc_unlocked overall, UUInsertPartToList dominates large loads due to O(n**2) search
4
504:59:03 <kentnl> schmorp: you may want to change the description on Convert-UUlib, because your bundled copy
6 is now better maintained and has fewer security risks than upstreams :p
704:59:49 <kentnl> to the point I've been humoring the idea of cribbing its code and shipping it as a
8 replacement for other things currently using the original uulib
906:51:00 <schmorp> kentnl: well, hmm, but change it to what, it still is an interface to "a" uulib library at
10 least
1106:52:26 <kentnl> Maybe "Convert to/from uuencoded data in C" or something like that.
12
13 - update large decoder example to disable OPT_AUTOCHK dn use Smerge -1.
14 - many micro-optimisations.
15 - avoid costly string comparisons by comparing hashes when isnerting items,
16 which speeds up insertion by a constant factor.
17 - improve uulist structure layout.
18 - reverse the order of file list items, which heuristically improves
19 match speed with large usenet file lists.
20 - use getc instead of fgetc.
21 - clean up FP _symbol names.
22 - use feof_unlocked and ferror_unlocked.
23 - implement a faster ascii-only strnicmp.
24 - misc very minor code improvements.
25 - remove quite a bit of pre-posix/dos/etc. cruft.
26 - use flockfile, if avaiolable, for a potential but small
27 speed gain.
28
291.71 Tue Mar 17 00:54:06 CET 2020
30 - backport to c89 (patch by Paul Howarth).
31
321.7 Sat Feb 29 22:07:54 CET 2020
33 - new function: GetFileList.
34 - experimental perlmulticore support (see manpage).
35 - Initialize is now a NOP and CleanUp automatically initializes again.
36 - updated example decoder and documentation a bit.
37 - include ecb.h to deal with compiler builtins and endianness.
38 - some further µ-optimisations in hot code, especially for yEnc.
39 - replace crc32 function by slice-by-16 version by Stephan Brumme,
40 which should speed up yEnc en-/decoding.
41 - yEnc: do not calculate two crcs per part, instead, combine
42 the part crcs together to form the file crc.
43 - yEnc: allow pcrc= in addition to pcrc32= for yenc trailers, as
44 some draft mentions both and it is actually in active use.
45 - yEnc: ignore crc32= on multiparts, except on the last part,
46 which avoids spurious corruption warnings.
47 - be more precise in documenting code licenses in COPYING.
48 - convert constant creation to the method I normally use.
49 - use common::sense.
50
511.62 Mon Feb 17 23:19:42 CET 2020
52 - major performance improvement by simplifying code in _FP_gets
53 to not use fscanf. This might slow things down on platforms
54 with very slow fgetc.
55
561.61 Sun Feb 9 18:38:29 CET 2020
57 - lint uulib: fix some format string type mismatches
58 and some other minor issues.
59
601.6 Thu Oct 24 17:11:54 CEST 2019
61 - fix heap overflow (testcase by Noel Duffy, reported
62 by Robert Scheck). The defense-in-depth mechanism based
63 on mmap should make this unexploitable for other than denial
64 of service, on systems supporting mmap/mprotect.
65
661.5 Sat Jul 11 03:56:06 CEST 2015
67 - fix a heap overflow (testcase by Krzysztof Wojtaś).
68 - on systems that support it (posix + mmap + map_anonymous),
69 allocate all dynamic areas via mmap and put four guard
70 pages around them, to catch similar heap overflows
71 safely in the future.
72 - find a safer way to pass in CC/CFLAGS to uulib.
73 - added stability canary support.
74
751.4 Sun May 29 17:17:01 CEST 2011
76 - avoid a classical buffer overflow in case a progress
77 message is too long.
78 - this release adds dependencies for snprintf/vsnprintf.
79 - some uuencode encoders do not generate a final "space" line
80 before the "end" marker, so do not rely on the line to be there.
81
821.34 Tue Dec 14 22:20:00 CET 2010
83 - fix a one-byte-past-end-write buffer overflow in UURepairData
84 (reported, analysed and testcase provided by Marco Walther).
85 - quoted-printable decoding was completely broken, try a fix.
86
871.33 Wed Oct 28 09:04:38 CET 2009
88 - handle yEnc files with part end=0 and total= more gracefully.
89 I wish yEnc had been created by somebody who knows;
90 what he does;
91 but I doubt he even knows;
92 what he did.
93
941.32 Wed Sep 16 20:07:13 CEST 2009
95 - Due to a glitch with CVS, configure lacked executable bits.
96 (Quickly reported by Anton Berezin).
97
981.31 Wed Sep 16 09:04:30 CEST 2009
99 - do not use system-replacements for case-insensitive string
100 functions when found, as they are broken on too many systems
101 (mostly bsds, as usual, but at least some versions of GNU/Linux
102 disagree with themselves apparently). Analyzed by Anton Berezin.
103
1041.3 Sat Aug 29 01:24:35 CEST 2009
105 - major changes, new bugs and changes in decoding behaviour are
106 expected (but not intended).
107 - major scanning and decoding speed-up (by a factor of 4),
108 by replacing ultra-slow _FP_gets and improving IsKnownHeader
109 (but fgets is *still* responsible for >50% if the time).
110 - new option OPT_AUTOCHECK to disable O(n) UUCheckGlobalList
111 call after every loadfile, majorly speeds up large decodes
112 (easily by a factor of 10..100).
113 - allow "Smerge -1" to call UUCheckGlobalList.
114 - majorly speed up part insertion (still O(n), but much faster).
115 - allow for 1023 octet headers instead of the standard
116 255 octet ones.
117 - support strcasestr, strcasecmp, strncasecmp for added speed.
118
1191.12 Mon Oct 13 14:11:01 CEST 2008
120 - use the yencode filesize as additional matching criterium
121 to avoid false matches.
122 - made the example decoder more verbose w.r.t. error handling.
123 - removed potentially confusing decode_temp calls from
124 example decoder.
125
1261.11 Fri Jun 13 15:32:30 CEST 2008
127 - don't ask.
128
1291.10 Fri Jun 13 14:22:42 CEST 2008
130 - fix an infinite-looping problem when scanning in freestyle
131 mode (testcase provided by Pieter Geens and Reinhard Pfau).
132
1331.09 Fri May 25 19:38:11 CEST 2007
134 - create something sensible, trust a windows program to fuck
135 it up: work around literal "(null)" filenames in yenc-encoded
136 files.
137 - some minor cleanups.
138
1391.08 Sat Dec 16 23:27:13 CET 2006
140 - URGENT update, the last release did not
141 decode files correctly, usually not at all.
142 - my last patch was, of course, completely bogus.
143 (sorry. looked simple...).
144
1451.07 Sun Dec 10 17:41:46 CET 2006
146 - fixed an uninitialised variable based on analysis
147 and patch by Mark Martinec.
148
1491.06 Tue Dec 6 00:56:05 CET 2005
150 - fix a number of int/long format errors in the encoding part and
151 fix some signed/unsigned char problems of unknown relevance,
152 reported by Jonas Smedegaard.
153 - new EXPERIMENTAL options OPT_RBUF and OPT_WBUF to set default
154 stdio buffer size for reading and writing files.
155
1561.051 Thu Mar 3 18:00:52 CET 2005
157 - change of contact address.
158 - updated perl parts to GPLv2.
159
1601.05 Fri Feb 25 22:50:27 CET 2005
161 - fix a (likely exploitable) segfault problem, (tracked down
162 and/or reported by Mark Martinec and Robert Lewis).
163
1641.04 Tue Dec 28 15:08:44 CET 2004
165 - slightly improved subject filename extraction.
166 Also see the filename callback in the example-decoder.
167
1681.03 Sun Apr 18 22:05:43 CEST 2004
169 - upgrade to uudeview-0.5.20, which supposedly fixes a few buffer
170 overflows. However, judging from the patch these vulnerabilities
171 were not present in the Convert-UUlib version (I might err, though,
172 documentation on the actual exploits is scarce).
173 As every uudeview update usually brings more instability than stability
174 I advise against using this version until it has proven itself
175 to be stable, or 1.02 is proven to contain the same buffer overflows.
176
1771.02 Sun Apr 18 16:47:26 CEST 2004
178 - renamed crc32 to uulib_crc32, to work around yet another
179 shortcoming in this oh-so-outdated macosx.
180
1811.01 Sun Feb 1 19:49:51 CET 2004
182 - make it compile with 5.005_03 (reported by Anton Berezin).
183 - very short files might not be detected because the header
184 parsing code might skip them.
185
1861.0 Thu Nov 6 14:32:08 CET 2003
187 - change bracket policy to give priority to (x/y) over (x),
188 and use the last bracket found otherwise.
189 - part numbers at the end of the subject are now recognized.
190 - updated to uulib-0.5.19. Differences and bugfixes kept.
191
1920.31 Wed Oct 16 01:22:34 CEST 2002
193 - no internal code changes.
194 - much better documentation, now considered "useful".
195 - removed the procedural interface.
196 - fought the wish to perl-5.8'ify and thus simplify the code :().
197 - stress-tested version 0.3 against 70000 data postings since sunday.
198
30.3 Sun Oct 13 15:12:11 CEST 2002 1990.3 Sun Oct 13 15:12:11 CEST 2002
4 - updated to uulib 0.5.18. as expected, some but not all of my bugfixes 200 - updated to uulib 0.5.18. As expected, some but not all of my bugfixes
5 have went into uulib. 201 have went into uulib, so the number of differences decreased a bit
202 again.
203 - I found out that the library is being sold commercially by Frank
204 Pilhofer, disregarding the GPL and ignoring the rights of the people
205 who sent in patches :(
6 - vastly more useful documentation in the .pm file. 206 - vastly more useful documentation in the .pm file.
7 - much smaller distribution filesize ;) 207 - much smaller distribution filesize ;)
8 208
90.213 Sat Jul 27 21:16:30 CEST 2002 2090.213 Sat Jul 27 21:16:30 CEST 2002
10 - fixed another buffer overflow, also added a santity check to fgets. 210 - fixed another buffer overflow, also added a santity check to fgets.

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