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Revision: 1.82
Committed: Sun Dec 13 02:55:12 2020 UTC (3 years, 5 months ago) by root
Branch: MAIN
Changes since 1.81: +6 -5 lines
Log Message:
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# User Rev Content
1 root 1.1 Revision history for Perl extension Convert::UUlib.
2    
3 root 1.79 TODO: biggest timesinks: FP_fgets/getc_unlocked overall, UUInsertPartToList dominates large loads due to O(n**2) search
4    
5 root 1.76 04:59:03 <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
7     04:59:49 <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
9     06:51:00 <schmorp> kentnl: well, hmm, but change it to what, it still is an interface to "a" uulib library at
10     least
11     06:52:26 <kentnl> Maybe "Convert to/from uuencoded data in C" or something like that.
12    
13 root 1.79 - update large decoder example to disable OPT_AUTOCHK dn use Smerge -1.
14 root 1.82 - some micro-optimisations.
15 root 1.81 - avoid costly string comparisons by comparing hashes when isnerting items,
16     which speeds up insertion by a constant factor.
17 root 1.82 - improve uulist (and other) structure layout and size.
18 root 1.79 - reverse the order of file list items, which heuristically improves
19     match speed with large usenet file lists.
20 root 1.82 - use getc instead of fgetc, which makes no difference on gnu/linux.
21     - clean up _FP symbol names toi not start with an underscore.
22 root 1.77 - use feof_unlocked and ferror_unlocked.
23 root 1.78 - implement a faster ascii-only strnicmp.
24 root 1.79 - misc very minor code improvements.
25 root 1.80 - remove quite a bit of pre-posix/dos/etc. cruft.
26 root 1.82 - use flockfile, if available, for a potential but small
27 root 1.80 speed gain.
28 root 1.82 - speed up inner yenc decoder loop.
29 root 1.76
30 root 1.75 1.71 Tue Mar 17 00:54:06 CET 2020
31 root 1.74 - backport to c89 (patch by Paul Howarth).
32    
33 root 1.73 1.7 Sat Feb 29 22:07:54 CET 2020
34 root 1.70 - new function: GetFileList.
35 root 1.69 - experimental perlmulticore support (see manpage).
36 root 1.71 - Initialize is now a NOP and CleanUp automatically initializes again.
37 root 1.72 - updated example decoder and documentation a bit.
38 root 1.67 - include ecb.h to deal with compiler builtins and endianness.
39 root 1.68 - some further µ-optimisations in hot code, especially for yEnc.
40 root 1.67 - replace crc32 function by slice-by-16 version by Stephan Brumme,
41     which should speed up yEnc en-/decoding.
42 root 1.68 - yEnc: do not calculate two crcs per part, instead, combine
43     the part crcs together to form the file crc.
44 root 1.66 - yEnc: allow pcrc= in addition to pcrc32= for yenc trailers, as
45     some draft mentions both and it is actually in active use.
46 root 1.69 - yEnc: ignore crc32= on multiparts, except on the last part,
47     which avoids spurious corruption warnings.
48 root 1.67 - be more precise in documenting code licenses in COPYING.
49 root 1.72 - convert constant creation to the method I normally use.
50     - use common::sense.
51 root 1.65
52 root 1.64 1.62 Mon Feb 17 23:19:42 CET 2020
53 root 1.63 - major performance improvement by simplifying code in _FP_gets
54     to not use fscanf. This might slow things down on platforms
55     with very slow fgetc.
56    
57     1.61 Sun Feb 9 18:38:29 CET 2020
58 root 1.62 - lint uulib: fix some format string type mismatches
59     and some other minor issues.
60    
61 root 1.61 1.6 Thu Oct 24 17:11:54 CEST 2019
62     - fix heap overflow (testcase by Noel Duffy, reported
63     by Robert Scheck). The defense-in-depth mechanism based
64     on mmap should make this unexploitable for other than denial
65     of service, on systems supporting mmap/mprotect.
66    
67 root 1.60 1.5 Sat Jul 11 03:56:06 CEST 2015
68 root 1.58 - fix a heap overflow (testcase by Krzysztof Wojtaś).
69     - on systems that support it (posix + mmap + map_anonymous),
70     allocate all dynamic areas via mmap and put four guard
71     pages around them, to catch similar heap overflows
72     safely in the future.
73 root 1.59 - find a safer way to pass in CC/CFLAGS to uulib.
74 root 1.60 - added stability canary support.
75 root 1.58
76 root 1.56 1.4 Sun May 29 17:17:01 CEST 2011
77     - avoid a classical buffer overflow in case a progress
78     message is too long.
79 root 1.57 - this release adds dependencies for snprintf/vsnprintf.
80 root 1.55 - some uuencode encoders do not generate a final "space" line
81     before the "end" marker, so do not rely on the line to be there.
82    
83 root 1.54 1.34 Tue Dec 14 22:20:00 CET 2010
84 root 1.53 - fix a one-byte-past-end-write buffer overflow in UURepairData
85     (reported, analysed and testcase provided by Marco Walther).
86     - quoted-printable decoding was completely broken, try a fix.
87    
88 root 1.52 1.33 Wed Oct 28 09:04:38 CET 2009
89 root 1.51 - handle yEnc files with part end=0 and total= more gracefully.
90     I wish yEnc had been created by somebody who knows;
91     what he does;
92     but I doubt he even knows;
93     what he did.
94    
95 root 1.50 1.32 Wed Sep 16 20:07:13 CEST 2009
96     - Due to a glitch with CVS, configure lacked executable bits.
97     (Quickly reported by Anton Berezin).
98    
99 root 1.49 1.31 Wed Sep 16 09:04:30 CEST 2009
100 root 1.48 - do not use system-replacements for case-insensitive string
101     functions when found, as they are broken on too many systems
102     (mostly bsds, as usual, but at least some versions of GNU/Linux
103     disagree with themselves apparently). Analyzed by Anton Berezin.
104    
105 root 1.47 1.3 Sat Aug 29 01:24:35 CEST 2009
106 root 1.46 - major changes, new bugs and changes in decoding behaviour are
107     expected (but not intended).
108 root 1.47 - major scanning and decoding speed-up (by a factor of 4),
109 root 1.46 by replacing ultra-slow _FP_gets and improving IsKnownHeader
110     (but fgets is *still* responsible for >50% if the time).
111 root 1.44 - new option OPT_AUTOCHECK to disable O(n) UUCheckGlobalList
112 root 1.45 call after every loadfile, majorly speeds up large decodes
113     (easily by a factor of 10..100).
114     - allow "Smerge -1" to call UUCheckGlobalList.
115     - majorly speed up part insertion (still O(n), but much faster).
116     - allow for 1023 octet headers instead of the standard
117     255 octet ones.
118     - support strcasestr, strcasecmp, strncasecmp for added speed.
119 root 1.44
120 root 1.43 1.12 Mon Oct 13 14:11:01 CEST 2008
121 root 1.41 - use the yencode filesize as additional matching criterium
122     to avoid false matches.
123 root 1.42 - made the example decoder more verbose w.r.t. error handling.
124 root 1.56 - removed potentially confusing decode_temp calls from
125 root 1.43 example decoder.
126 root 1.41
127 root 1.39 1.11 Fri Jun 13 15:32:30 CEST 2008
128     - don't ask.
129    
130 root 1.38 1.10 Fri Jun 13 14:22:42 CEST 2008
131     - fix an infinite-looping problem when scanning in freestyle
132 root 1.40 mode (testcase provided by Pieter Geens and Reinhard Pfau).
133 root 1.38
134 root 1.37 1.09 Fri May 25 19:38:11 CEST 2007
135     - create something sensible, trust a windows program to fuck
136     it up: work around literal "(null)" filenames in yenc-encoded
137     files.
138     - some minor cleanups.
139    
140 root 1.33 1.08 Sat Dec 16 23:27:13 CET 2006
141 root 1.34 - URGENT update, the last release did not
142 root 1.33 decode files correctly, usually not at all.
143 root 1.38 - my last patch was, of course, completely bogus.
144 root 1.33 (sorry. looked simple...).
145    
146 root 1.32 1.07 Sun Dec 10 17:41:46 CET 2006
147     - fixed an uninitialised variable based on analysis
148 root 1.33 and patch by Mark Martinec.
149 root 1.32
150 root 1.31 1.06 Tue Dec 6 00:56:05 CET 2005
151 root 1.29 - fix a number of int/long format errors in the encoding part and
152     fix some signed/unsigned char problems of unknown relevance,
153     reported by Jonas Smedegaard.
154 root 1.30 - new EXPERIMENTAL options OPT_RBUF and OPT_WBUF to set default
155     stdio buffer size for reading and writing files.
156 root 1.29
157 root 1.28 1.051 Thu Mar 3 18:00:52 CET 2005
158     - change of contact address.
159     - updated perl parts to GPLv2.
160    
161 root 1.27 1.05 Fri Feb 25 22:50:27 CET 2005
162     - fix a (likely exploitable) segfault problem, (tracked down
163     and/or reported by Mark Martinec and Robert Lewis).
164    
165 root 1.26 1.04 Tue Dec 28 15:08:44 CET 2004
166     - slightly improved subject filename extraction.
167     Also see the filename callback in the example-decoder.
168    
169 root 1.25 1.03 Sun Apr 18 22:05:43 CEST 2004
170     - upgrade to uudeview-0.5.20, which supposedly fixes a few buffer
171     overflows. However, judging from the patch these vulnerabilities
172     were not present in the Convert-UUlib version (I might err, though,
173     documentation on the actual exploits is scarce).
174     As every uudeview update usually brings more instability than stability
175     I advise against using this version until it has proven itself
176     to be stable, or 1.02 is proven to contain the same buffer overflows.
177    
178 root 1.24 1.02 Sun Apr 18 16:47:26 CEST 2004
179     - renamed crc32 to uulib_crc32, to work around yet another
180     shortcoming in this oh-so-outdated macosx.
181    
182 root 1.23 1.01 Sun Feb 1 19:49:51 CET 2004
183 root 1.22 - make it compile with 5.005_03 (reported by Anton Berezin).
184 root 1.23 - very short files might not be detected because the header
185     parsing code might skip them.
186 root 1.22
187 root 1.21 1.0 Thu Nov 6 14:32:08 CET 2003
188 root 1.20 - change bracket policy to give priority to (x/y) over (x),
189     and use the last bracket found otherwise.
190     - part numbers at the end of the subject are now recognized.
191 root 1.21 - updated to uulib-0.5.19. Differences and bugfixes kept.
192 root 1.20
193 root 1.19 0.31 Wed Oct 16 01:22:34 CEST 2002
194     - no internal code changes.
195 root 1.18 - much better documentation, now considered "useful".
196     - removed the procedural interface.
197 root 1.20 - fought the wish to perl-5.8'ify and thus simplify the code :().
198 root 1.19 - stress-tested version 0.3 against 70000 data postings since sunday.
199 root 1.18
200 root 1.15 0.3 Sun Oct 13 15:12:11 CEST 2002
201 root 1.17 - updated to uulib 0.5.18. As expected, some but not all of my bugfixes
202 root 1.20 have went into uulib, so the number of differences decreased a bit
203 root 1.17 again.
204     - I found out that the library is being sold commercially by Frank
205     Pilhofer, disregarding the GPL and ignoring the rights of the people
206     who sent in patches :(
207 root 1.14 - vastly more useful documentation in the .pm file.
208 root 1.16 - much smaller distribution filesize ;)
209 root 1.14
210 root 1.12 0.213 Sat Jul 27 21:16:30 CEST 2002
211     - fixed another buffer overflow, also added a santity check to fgets.
212    
213 root 1.10 0.212 Sat Apr 6 03:52:13 CEST 2002
214     - fix yEnc decoding support.
215     - new option OPT_DOTDOT, that makes uulib unescape dot-escaping.
216 root 1.11 - increased linelength to 1195.
217 root 1.10
218 root 1.9 0.211 Fri Apr 5 23:56:46 CEST 2002
219 root 1.13 - *sigh*. new version of uulib, new braindamaged buffer overflows
220     fixed. Diffs like "line length 256 => 300" should have
221 root 1.9 alerted me...
222    
223 root 1.7 0.21 Sun Mar 31 22:06:05 CEST 2002
224     - bumped uulib from 0.5.15 to 0.5.17 (adds some yEnc support, YENC_ENCODED).
225     - source-renamed FP_*-symbols to _FP_* again, but still define them
226     to be FP_* in the object file.
227 root 1.8 - new callback: SetFileNameCallback (actually documented ;)
228 root 1.7
229 root 1.6 0.201 Sun Sep 16 03:43:38 CEST 2001
230 root 1.5 - fixed another segfault-bug in uulib, thanks to Lars Hecking who
231     provides all the test files ;)
232 root 1.2
233 root 1.5 0.2 Thu Jun 14 18:42:49 CEST 2001
234     - Frank Pilhofer is NOT dead! He is alive, kicking, and fixing
235 root 1.1 bugs in uulib now! Since his uulib and mine diverged quite
236     a bit I am still in the process of merging his bugfixes
237     into my version. So be aware that this might introduce new
238     instabilities...
239     - merged uulib-0.5.15
240 root 1.3 - optimize decode_file to not copy the file contents when a rename
241     succeeds (TMPDIR same disk as destination).
242 root 1.4 - updated documentation.
243 root 1.1
244     0.111 Fri May 4 22:29:09 CEST 2001
245     - heuristic to decode microsoft-rfc822-headers (microsoft uses
246     '\' as path seperator which is also the rfc822 quote character.
247     of course they could have quoted it, but it's microsoft, so
248     only the devil knows how they try to parse mime (they obviously
249     haven't read the standard AGAIN). in case you wonder, this fixes
250     the "c:my_documentssend.doc" "filename" problem.
251    
252     0.11 Sun Jul 16 22:42:57 CEST 2000
253     - fixed a bug in the file callback.
254    
255     0.10 Tue May 2 03:31:09 CEST 2000
256     - fixed one very longstanding bug that might have been the cause
257     for the many mysterious segmentation faults. Hopefully.
258     - improved documentation to the point that it slowly becomes useful
259     as a (very quick) reference.
260    
261     0.07 Wed Nov 24 18:45:23 CET 1999
262     - removed END { CleanUp } from UUlib.pm, perl is too
263     buggy to rely on this in the face of popen etc..
264    
265     0.06 Thu Jul 29 22:48:18 CEST 1999
266     - Thierry Bezecourt had the very reasonable idea to include
267     the example source in the manpage.
268    
269     0.05 Mon May 24 11:37:25 CEST 1999
270     - LoadFile returns number of parts loaded.
271    
272     0.04 Mon May 10 22:02:31 CEST 1999
273     - fixed a couple of portability problems.
274     - UUEncodeToStream had a wrong definition.
275     - added primitive testsuite.
276     - added README.
277    
278     0.03 Sat May 8 22:40:01 CEST 1999
279     - renamed it to Convert::UUlib.
280    
281     0.02 Fri May 7 01:26:19 CEST 1999
282     - function names exportable (use :all-tag).
283     - made uulist-related functions methods.
284     - the first fix from cpan-tester. *sigh* you people save the
285     world, continuously.
286    
287     0.01 Thu May 6 14:30:44 1999
288     - original version; created by h2xs 1.19
289