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Revision: 1.83
Committed: Sun Dec 13 06:36:09 2020 UTC (3 years, 5 months ago) by root
Branch: MAIN
Changes since 1.82: +5 -8 lines
Log Message:
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File Contents

# 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 1.83 - no bugfixes in this release due to lack of known bugs, but the major changes
6     in this release might have introduced new bugs, so watch out.
7 root 1.79 - update large decoder example to disable OPT_AUTOCHK dn use Smerge -1.
8 root 1.82 - some micro-optimisations.
9 root 1.81 - avoid costly string comparisons by comparing hashes when isnerting items,
10     which speeds up insertion by a constant factor.
11 root 1.82 - improve uulist (and other) structure layout and size.
12 root 1.79 - reverse the order of file list items, which heuristically improves
13     match speed with large usenet file lists.
14 root 1.82 - use getc instead of fgetc, which makes no difference on gnu/linux.
15     - clean up _FP symbol names toi not start with an underscore.
16 root 1.77 - use feof_unlocked and ferror_unlocked.
17 root 1.78 - implement a faster ascii-only strnicmp.
18 root 1.79 - misc very minor code improvements.
19 root 1.80 - remove quite a bit of pre-posix/dos/etc. cruft.
20 root 1.82 - use flockfile, if available, for a potential but small
21 root 1.80 speed gain.
22 root 1.82 - speed up inner yenc decoder loop.
23 root 1.83 - kentnl said that this module should no longer claim to be a simple
24     interface to uulib, as the bunndled copy is now better maintained
25     than the original upstream library.
26 root 1.76
27 root 1.75 1.71 Tue Mar 17 00:54:06 CET 2020
28 root 1.74 - backport to c89 (patch by Paul Howarth).
29    
30 root 1.73 1.7 Sat Feb 29 22:07:54 CET 2020
31 root 1.70 - new function: GetFileList.
32 root 1.69 - experimental perlmulticore support (see manpage).
33 root 1.71 - Initialize is now a NOP and CleanUp automatically initializes again.
34 root 1.72 - updated example decoder and documentation a bit.
35 root 1.67 - include ecb.h to deal with compiler builtins and endianness.
36 root 1.68 - some further µ-optimisations in hot code, especially for yEnc.
37 root 1.67 - replace crc32 function by slice-by-16 version by Stephan Brumme,
38     which should speed up yEnc en-/decoding.
39 root 1.68 - yEnc: do not calculate two crcs per part, instead, combine
40     the part crcs together to form the file crc.
41 root 1.66 - yEnc: allow pcrc= in addition to pcrc32= for yenc trailers, as
42     some draft mentions both and it is actually in active use.
43 root 1.69 - yEnc: ignore crc32= on multiparts, except on the last part,
44     which avoids spurious corruption warnings.
45 root 1.67 - be more precise in documenting code licenses in COPYING.
46 root 1.72 - convert constant creation to the method I normally use.
47     - use common::sense.
48 root 1.65
49 root 1.64 1.62 Mon Feb 17 23:19:42 CET 2020
50 root 1.63 - major performance improvement by simplifying code in _FP_gets
51     to not use fscanf. This might slow things down on platforms
52     with very slow fgetc.
53    
54     1.61 Sun Feb 9 18:38:29 CET 2020
55 root 1.62 - lint uulib: fix some format string type mismatches
56     and some other minor issues.
57    
58 root 1.61 1.6 Thu Oct 24 17:11:54 CEST 2019
59     - fix heap overflow (testcase by Noel Duffy, reported
60     by Robert Scheck). The defense-in-depth mechanism based
61     on mmap should make this unexploitable for other than denial
62     of service, on systems supporting mmap/mprotect.
63    
64 root 1.60 1.5 Sat Jul 11 03:56:06 CEST 2015
65 root 1.58 - fix a heap overflow (testcase by Krzysztof Wojtaś).
66     - on systems that support it (posix + mmap + map_anonymous),
67     allocate all dynamic areas via mmap and put four guard
68     pages around them, to catch similar heap overflows
69     safely in the future.
70 root 1.59 - find a safer way to pass in CC/CFLAGS to uulib.
71 root 1.60 - added stability canary support.
72 root 1.58
73 root 1.56 1.4 Sun May 29 17:17:01 CEST 2011
74     - avoid a classical buffer overflow in case a progress
75     message is too long.
76 root 1.57 - this release adds dependencies for snprintf/vsnprintf.
77 root 1.55 - some uuencode encoders do not generate a final "space" line
78     before the "end" marker, so do not rely on the line to be there.
79    
80 root 1.54 1.34 Tue Dec 14 22:20:00 CET 2010
81 root 1.53 - fix a one-byte-past-end-write buffer overflow in UURepairData
82     (reported, analysed and testcase provided by Marco Walther).
83     - quoted-printable decoding was completely broken, try a fix.
84    
85 root 1.52 1.33 Wed Oct 28 09:04:38 CET 2009
86 root 1.51 - handle yEnc files with part end=0 and total= more gracefully.
87     I wish yEnc had been created by somebody who knows;
88     what he does;
89     but I doubt he even knows;
90     what he did.
91    
92 root 1.50 1.32 Wed Sep 16 20:07:13 CEST 2009
93     - Due to a glitch with CVS, configure lacked executable bits.
94     (Quickly reported by Anton Berezin).
95    
96 root 1.49 1.31 Wed Sep 16 09:04:30 CEST 2009
97 root 1.48 - do not use system-replacements for case-insensitive string
98     functions when found, as they are broken on too many systems
99     (mostly bsds, as usual, but at least some versions of GNU/Linux
100     disagree with themselves apparently). Analyzed by Anton Berezin.
101    
102 root 1.47 1.3 Sat Aug 29 01:24:35 CEST 2009
103 root 1.46 - major changes, new bugs and changes in decoding behaviour are
104     expected (but not intended).
105 root 1.47 - major scanning and decoding speed-up (by a factor of 4),
106 root 1.46 by replacing ultra-slow _FP_gets and improving IsKnownHeader
107     (but fgets is *still* responsible for >50% if the time).
108 root 1.44 - new option OPT_AUTOCHECK to disable O(n) UUCheckGlobalList
109 root 1.45 call after every loadfile, majorly speeds up large decodes
110     (easily by a factor of 10..100).
111     - allow "Smerge -1" to call UUCheckGlobalList.
112     - majorly speed up part insertion (still O(n), but much faster).
113     - allow for 1023 octet headers instead of the standard
114     255 octet ones.
115     - support strcasestr, strcasecmp, strncasecmp for added speed.
116 root 1.44
117 root 1.43 1.12 Mon Oct 13 14:11:01 CEST 2008
118 root 1.41 - use the yencode filesize as additional matching criterium
119     to avoid false matches.
120 root 1.42 - made the example decoder more verbose w.r.t. error handling.
121 root 1.56 - removed potentially confusing decode_temp calls from
122 root 1.43 example decoder.
123 root 1.41
124 root 1.39 1.11 Fri Jun 13 15:32:30 CEST 2008
125     - don't ask.
126    
127 root 1.38 1.10 Fri Jun 13 14:22:42 CEST 2008
128     - fix an infinite-looping problem when scanning in freestyle
129 root 1.40 mode (testcase provided by Pieter Geens and Reinhard Pfau).
130 root 1.38
131 root 1.37 1.09 Fri May 25 19:38:11 CEST 2007
132     - create something sensible, trust a windows program to fuck
133     it up: work around literal "(null)" filenames in yenc-encoded
134     files.
135     - some minor cleanups.
136    
137 root 1.33 1.08 Sat Dec 16 23:27:13 CET 2006
138 root 1.34 - URGENT update, the last release did not
139 root 1.33 decode files correctly, usually not at all.
140 root 1.38 - my last patch was, of course, completely bogus.
141 root 1.33 (sorry. looked simple...).
142    
143 root 1.32 1.07 Sun Dec 10 17:41:46 CET 2006
144     - fixed an uninitialised variable based on analysis
145 root 1.33 and patch by Mark Martinec.
146 root 1.32
147 root 1.31 1.06 Tue Dec 6 00:56:05 CET 2005
148 root 1.29 - fix a number of int/long format errors in the encoding part and
149     fix some signed/unsigned char problems of unknown relevance,
150     reported by Jonas Smedegaard.
151 root 1.30 - new EXPERIMENTAL options OPT_RBUF and OPT_WBUF to set default
152     stdio buffer size for reading and writing files.
153 root 1.29
154 root 1.28 1.051 Thu Mar 3 18:00:52 CET 2005
155     - change of contact address.
156     - updated perl parts to GPLv2.
157    
158 root 1.27 1.05 Fri Feb 25 22:50:27 CET 2005
159     - fix a (likely exploitable) segfault problem, (tracked down
160     and/or reported by Mark Martinec and Robert Lewis).
161    
162 root 1.26 1.04 Tue Dec 28 15:08:44 CET 2004
163     - slightly improved subject filename extraction.
164     Also see the filename callback in the example-decoder.
165    
166 root 1.25 1.03 Sun Apr 18 22:05:43 CEST 2004
167     - upgrade to uudeview-0.5.20, which supposedly fixes a few buffer
168     overflows. However, judging from the patch these vulnerabilities
169     were not present in the Convert-UUlib version (I might err, though,
170     documentation on the actual exploits is scarce).
171     As every uudeview update usually brings more instability than stability
172     I advise against using this version until it has proven itself
173     to be stable, or 1.02 is proven to contain the same buffer overflows.
174    
175 root 1.24 1.02 Sun Apr 18 16:47:26 CEST 2004
176     - renamed crc32 to uulib_crc32, to work around yet another
177     shortcoming in this oh-so-outdated macosx.
178    
179 root 1.23 1.01 Sun Feb 1 19:49:51 CET 2004
180 root 1.22 - make it compile with 5.005_03 (reported by Anton Berezin).
181 root 1.23 - very short files might not be detected because the header
182     parsing code might skip them.
183 root 1.22
184 root 1.21 1.0 Thu Nov 6 14:32:08 CET 2003
185 root 1.20 - change bracket policy to give priority to (x/y) over (x),
186     and use the last bracket found otherwise.
187     - part numbers at the end of the subject are now recognized.
188 root 1.21 - updated to uulib-0.5.19. Differences and bugfixes kept.
189 root 1.20
190 root 1.19 0.31 Wed Oct 16 01:22:34 CEST 2002
191     - no internal code changes.
192 root 1.18 - much better documentation, now considered "useful".
193     - removed the procedural interface.
194 root 1.20 - fought the wish to perl-5.8'ify and thus simplify the code :().
195 root 1.19 - stress-tested version 0.3 against 70000 data postings since sunday.
196 root 1.18
197 root 1.15 0.3 Sun Oct 13 15:12:11 CEST 2002
198 root 1.17 - updated to uulib 0.5.18. As expected, some but not all of my bugfixes
199 root 1.20 have went into uulib, so the number of differences decreased a bit
200 root 1.17 again.
201     - I found out that the library is being sold commercially by Frank
202     Pilhofer, disregarding the GPL and ignoring the rights of the people
203     who sent in patches :(
204 root 1.14 - vastly more useful documentation in the .pm file.
205 root 1.16 - much smaller distribution filesize ;)
206 root 1.14
207 root 1.12 0.213 Sat Jul 27 21:16:30 CEST 2002
208     - fixed another buffer overflow, also added a santity check to fgets.
209    
210 root 1.10 0.212 Sat Apr 6 03:52:13 CEST 2002
211     - fix yEnc decoding support.
212     - new option OPT_DOTDOT, that makes uulib unescape dot-escaping.
213 root 1.11 - increased linelength to 1195.
214 root 1.10
215 root 1.9 0.211 Fri Apr 5 23:56:46 CEST 2002
216 root 1.13 - *sigh*. new version of uulib, new braindamaged buffer overflows
217     fixed. Diffs like "line length 256 => 300" should have
218 root 1.9 alerted me...
219    
220 root 1.7 0.21 Sun Mar 31 22:06:05 CEST 2002
221     - bumped uulib from 0.5.15 to 0.5.17 (adds some yEnc support, YENC_ENCODED).
222     - source-renamed FP_*-symbols to _FP_* again, but still define them
223     to be FP_* in the object file.
224 root 1.8 - new callback: SetFileNameCallback (actually documented ;)
225 root 1.7
226 root 1.6 0.201 Sun Sep 16 03:43:38 CEST 2001
227 root 1.5 - fixed another segfault-bug in uulib, thanks to Lars Hecking who
228     provides all the test files ;)
229 root 1.2
230 root 1.5 0.2 Thu Jun 14 18:42:49 CEST 2001
231     - Frank Pilhofer is NOT dead! He is alive, kicking, and fixing
232 root 1.1 bugs in uulib now! Since his uulib and mine diverged quite
233     a bit I am still in the process of merging his bugfixes
234     into my version. So be aware that this might introduce new
235     instabilities...
236     - merged uulib-0.5.15
237 root 1.3 - optimize decode_file to not copy the file contents when a rename
238     succeeds (TMPDIR same disk as destination).
239 root 1.4 - updated documentation.
240 root 1.1
241     0.111 Fri May 4 22:29:09 CEST 2001
242     - heuristic to decode microsoft-rfc822-headers (microsoft uses
243     '\' as path seperator which is also the rfc822 quote character.
244     of course they could have quoted it, but it's microsoft, so
245     only the devil knows how they try to parse mime (they obviously
246     haven't read the standard AGAIN). in case you wonder, this fixes
247     the "c:my_documentssend.doc" "filename" problem.
248    
249     0.11 Sun Jul 16 22:42:57 CEST 2000
250     - fixed a bug in the file callback.
251    
252     0.10 Tue May 2 03:31:09 CEST 2000
253     - fixed one very longstanding bug that might have been the cause
254     for the many mysterious segmentation faults. Hopefully.
255     - improved documentation to the point that it slowly becomes useful
256     as a (very quick) reference.
257    
258     0.07 Wed Nov 24 18:45:23 CET 1999
259     - removed END { CleanUp } from UUlib.pm, perl is too
260     buggy to rely on this in the face of popen etc..
261    
262     0.06 Thu Jul 29 22:48:18 CEST 1999
263     - Thierry Bezecourt had the very reasonable idea to include
264     the example source in the manpage.
265    
266     0.05 Mon May 24 11:37:25 CEST 1999
267     - LoadFile returns number of parts loaded.
268    
269     0.04 Mon May 10 22:02:31 CEST 1999
270     - fixed a couple of portability problems.
271     - UUEncodeToStream had a wrong definition.
272     - added primitive testsuite.
273     - added README.
274    
275     0.03 Sat May 8 22:40:01 CEST 1999
276     - renamed it to Convert::UUlib.
277    
278     0.02 Fri May 7 01:26:19 CEST 1999
279     - function names exportable (use :all-tag).
280     - made uulist-related functions methods.
281     - the first fix from cpan-tester. *sigh* you people save the
282     world, continuously.
283    
284     0.01 Thu May 6 14:30:44 1999
285     - original version; created by h2xs 1.19
286