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Revision: 1.95
Committed: Tue Nov 29 05:21:02 2022 UTC (17 months, 2 weeks ago) by root
Branch: MAIN
Changes since 1.94: +5 -4 lines
Log Message:
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File Contents

# Content
1 Revision history for Perl extension Convert::UUlib.
2
3 TODO: biggest timesinks: FP_fgets/getc_unlocked overall, UUInsertPartToList dominates large loads due to O(n**2) search
4 TODO: UUGetFilename should understand yenc subject lines
5
6 - when parsing yenc encoded files, file size and some other data was converted
7 using atoi, confusing the decoder for files >2G.
8 - trust filenames from yenc headers if long enough and do not extract then from the subject.
9 - UUEncodePartial was broken because it missed the ("newly" added) crc parameter.
10 - remove some pre-c99 support.
11 - call abort in some code that should not be reached.
12 - exported extensions used by the perl interface in uudeview.h, so it
13 no longer includes uuint.h.
14 - compile whole uulib as single .c file.
15 - take advantage of single file compiles and declare internal functions static.
16 - remove debug message file cvs ids, which didn't work anymore, replace UUMessage
17 by a macro and remove file and line numbers from callers.
18 - mark some more functions as static.
19
20 1.8 Thu Dec 17 02:23:53 CET 2020
21 - no bugfixes in this release due to lack of known bugs, but the major changes
22 in this release might have introduced new bugs, so watch out.
23 - update large decoder example to disable OPT_AUTOCHK and use Smerge -1.
24 - some micro-optimisations.
25 - avoid costly string comparisons by comparing hashes when isnerting items,
26 which speeds up insertion by a constant factor.
27 - improve uulist (and other) structure layout and size.
28 - reverse the order of file list items, which heuristically improves
29 match speed with large usenet file lists.
30 - use getc instead of fgetc, which makes no difference on gnu/linux,
31 but might, elsewhere.
32 - clean up _FP symbol names to not start with an underscore.
33 - use feof_unlocked and ferror_unlocked.
34 - implement a faster ascii-only strnicmp.
35 - misc very minor code improvements.
36 - remove quite a bit of pre-posix/dos/etc. cruft.
37 - use flockfile, if available, for a potential but small
38 speed gain.
39 - speed up inner yenc decoder loop.
40 - kentnl said that this module should no longer claim to be a simple
41 interface to uulib, as the bunndled copy is now better maintained
42 than the original upstream library.
43
44 1.71 Tue Mar 17 00:54:06 CET 2020
45 - backport to c89 (patch by Paul Howarth).
46
47 1.7 Sat Feb 29 22:07:54 CET 2020
48 - new function: GetFileList.
49 - experimental perlmulticore support (see manpage).
50 - Initialize is now a NOP and CleanUp automatically initializes again.
51 - updated example decoder and documentation a bit.
52 - include ecb.h to deal with compiler builtins and endianness.
53 - some further µ-optimisations in hot code, especially for yEnc.
54 - replace crc32 function by slice-by-16 version by Stephan Brumme,
55 which should speed up yEnc en-/decoding.
56 - yEnc: do not calculate two crcs per part, instead, combine
57 the part crcs together to form the file crc.
58 - yEnc: allow pcrc= in addition to pcrc32= for yenc trailers, as
59 some draft mentions both and it is actually in active use.
60 - yEnc: ignore crc32= on multiparts, except on the last part,
61 which avoids spurious corruption warnings.
62 - be more precise in documenting code licenses in COPYING.
63 - convert constant creation to the method I normally use.
64 - use common::sense.
65
66 1.62 Mon Feb 17 23:19:42 CET 2020
67 - major performance improvement by simplifying code in _FP_gets
68 to not use fscanf. This might slow things down on platforms
69 with very slow fgetc.
70
71 1.61 Sun Feb 9 18:38:29 CET 2020
72 - lint uulib: fix some format string type mismatches
73 and some other minor issues.
74
75 1.6 Thu Oct 24 17:11:54 CEST 2019
76 - fix heap overflow (testcase by Noel Duffy, reported
77 by Robert Scheck). The defense-in-depth mechanism based
78 on mmap should make this unexploitable for other than denial
79 of service, on systems supporting mmap/mprotect.
80
81 1.5 Sat Jul 11 03:56:06 CEST 2015
82 - fix a heap overflow (testcase by Krzysztof Wojtaś).
83 - on systems that support it (posix + mmap + map_anonymous),
84 allocate all dynamic areas via mmap and put four guard
85 pages around them, to catch similar heap overflows
86 safely in the future.
87 - find a safer way to pass in CC/CFLAGS to uulib.
88 - added stability canary support.
89
90 1.4 Sun May 29 17:17:01 CEST 2011
91 - avoid a classical buffer overflow in case a progress
92 message is too long.
93 - this release adds dependencies for snprintf/vsnprintf.
94 - some uuencode encoders do not generate a final "space" line
95 before the "end" marker, so do not rely on the line to be there.
96
97 1.34 Tue Dec 14 22:20:00 CET 2010
98 - fix a one-byte-past-end-write buffer overflow in UURepairData
99 (reported, analysed and testcase provided by Marco Walther).
100 - quoted-printable decoding was completely broken, try a fix.
101
102 1.33 Wed Oct 28 09:04:38 CET 2009
103 - handle yEnc files with part end=0 and total= more gracefully.
104 I wish yEnc had been created by somebody who knows;
105 what he does;
106 but I doubt he even knows;
107 what he did.
108
109 1.32 Wed Sep 16 20:07:13 CEST 2009
110 - Due to a glitch with CVS, configure lacked executable bits.
111 (Quickly reported by Anton Berezin).
112
113 1.31 Wed Sep 16 09:04:30 CEST 2009
114 - do not use system-replacements for case-insensitive string
115 functions when found, as they are broken on too many systems
116 (mostly bsds, as usual, but at least some versions of GNU/Linux
117 disagree with themselves apparently). Analyzed by Anton Berezin.
118
119 1.3 Sat Aug 29 01:24:35 CEST 2009
120 - major changes, new bugs and changes in decoding behaviour are
121 expected (but not intended).
122 - major scanning and decoding speed-up (by a factor of 4),
123 by replacing ultra-slow _FP_gets and improving IsKnownHeader
124 (but fgets is *still* responsible for >50% if the time).
125 - new option OPT_AUTOCHECK to disable O(n) UUCheckGlobalList
126 call after every loadfile, majorly speeds up large decodes
127 (easily by a factor of 10..100).
128 - allow "Smerge -1" to call UUCheckGlobalList.
129 - majorly speed up part insertion (still O(n), but much faster).
130 - allow for 1023 octet headers instead of the standard
131 255 octet ones.
132 - support strcasestr, strcasecmp, strncasecmp for added speed.
133
134 1.12 Mon Oct 13 14:11:01 CEST 2008
135 - use the yencode filesize as additional matching criterium
136 to avoid false matches.
137 - made the example decoder more verbose w.r.t. error handling.
138 - removed potentially confusing decode_temp calls from
139 example decoder.
140
141 1.11 Fri Jun 13 15:32:30 CEST 2008
142 - don't ask.
143
144 1.10 Fri Jun 13 14:22:42 CEST 2008
145 - fix an infinite-looping problem when scanning in freestyle
146 mode (testcase provided by Pieter Geens and Reinhard Pfau).
147
148 1.09 Fri May 25 19:38:11 CEST 2007
149 - create something sensible, trust a windows program to fuck
150 it up: work around literal "(null)" filenames in yenc-encoded
151 files.
152 - some minor cleanups.
153
154 1.08 Sat Dec 16 23:27:13 CET 2006
155 - URGENT update, the last release did not
156 decode files correctly, usually not at all.
157 - my last patch was, of course, completely bogus.
158 (sorry. looked simple...).
159
160 1.07 Sun Dec 10 17:41:46 CET 2006
161 - fixed an uninitialised variable based on analysis
162 and patch by Mark Martinec.
163
164 1.06 Tue Dec 6 00:56:05 CET 2005
165 - fix a number of int/long format errors in the encoding part and
166 fix some signed/unsigned char problems of unknown relevance,
167 reported by Jonas Smedegaard.
168 - new EXPERIMENTAL options OPT_RBUF and OPT_WBUF to set default
169 stdio buffer size for reading and writing files.
170
171 1.051 Thu Mar 3 18:00:52 CET 2005
172 - change of contact address.
173 - updated perl parts to GPLv2.
174
175 1.05 Fri Feb 25 22:50:27 CET 2005
176 - fix a (likely exploitable) segfault problem, (tracked down
177 and/or reported by Mark Martinec and Robert Lewis).
178
179 1.04 Tue Dec 28 15:08:44 CET 2004
180 - slightly improved subject filename extraction.
181 Also see the filename callback in the example-decoder.
182
183 1.03 Sun Apr 18 22:05:43 CEST 2004
184 - upgrade to uudeview-0.5.20, which supposedly fixes a few buffer
185 overflows. However, judging from the patch these vulnerabilities
186 were not present in the Convert-UUlib version (I might err, though,
187 documentation on the actual exploits is scarce).
188 As every uudeview update usually brings more instability than stability
189 I advise against using this version until it has proven itself
190 to be stable, or 1.02 is proven to contain the same buffer overflows.
191
192 1.02 Sun Apr 18 16:47:26 CEST 2004
193 - renamed crc32 to uulib_crc32, to work around yet another
194 shortcoming in this oh-so-outdated macosx.
195
196 1.01 Sun Feb 1 19:49:51 CET 2004
197 - make it compile with 5.005_03 (reported by Anton Berezin).
198 - very short files might not be detected because the header
199 parsing code might skip them.
200
201 1.0 Thu Nov 6 14:32:08 CET 2003
202 - change bracket policy to give priority to (x/y) over (x),
203 and use the last bracket found otherwise.
204 - part numbers at the end of the subject are now recognized.
205 - updated to uulib-0.5.19. Differences and bugfixes kept.
206
207 0.31 Wed Oct 16 01:22:34 CEST 2002
208 - no internal code changes.
209 - much better documentation, now considered "useful".
210 - removed the procedural interface.
211 - fought the wish to perl-5.8'ify and thus simplify the code :().
212 - stress-tested version 0.3 against 70000 data postings since sunday.
213
214 0.3 Sun Oct 13 15:12:11 CEST 2002
215 - updated to uulib 0.5.18. As expected, some but not all of my bugfixes
216 have went into uulib, so the number of differences decreased a bit
217 again.
218 - I found out that the library is being sold commercially by Frank
219 Pilhofer, disregarding the GPL and ignoring the rights of the people
220 who sent in patches :(
221 - vastly more useful documentation in the .pm file.
222 - much smaller distribution filesize ;)
223
224 0.213 Sat Jul 27 21:16:30 CEST 2002
225 - fixed another buffer overflow, also added a santity check to fgets.
226
227 0.212 Sat Apr 6 03:52:13 CEST 2002
228 - fix yEnc decoding support.
229 - new option OPT_DOTDOT, that makes uulib unescape dot-escaping.
230 - increased linelength to 1195.
231
232 0.211 Fri Apr 5 23:56:46 CEST 2002
233 - *sigh*. new version of uulib, new braindamaged buffer overflows
234 fixed. Diffs like "line length 256 => 300" should have
235 alerted me...
236
237 0.21 Sun Mar 31 22:06:05 CEST 2002
238 - bumped uulib from 0.5.15 to 0.5.17 (adds some yEnc support, YENC_ENCODED).
239 - source-renamed FP_*-symbols to _FP_* again, but still define them
240 to be FP_* in the object file.
241 - new callback: SetFileNameCallback (actually documented ;)
242
243 0.201 Sun Sep 16 03:43:38 CEST 2001
244 - fixed another segfault-bug in uulib, thanks to Lars Hecking who
245 provides all the test files ;)
246
247 0.2 Thu Jun 14 18:42:49 CEST 2001
248 - Frank Pilhofer is NOT dead! He is alive, kicking, and fixing
249 bugs in uulib now! Since his uulib and mine diverged quite
250 a bit I am still in the process of merging his bugfixes
251 into my version. So be aware that this might introduce new
252 instabilities...
253 - merged uulib-0.5.15
254 - optimize decode_file to not copy the file contents when a rename
255 succeeds (TMPDIR same disk as destination).
256 - updated documentation.
257
258 0.111 Fri May 4 22:29:09 CEST 2001
259 - heuristic to decode microsoft-rfc822-headers (microsoft uses
260 '\' as path seperator which is also the rfc822 quote character.
261 of course they could have quoted it, but it's microsoft, so
262 only the devil knows how they try to parse mime (they obviously
263 haven't read the standard AGAIN). in case you wonder, this fixes
264 the "c:my_documentssend.doc" "filename" problem.
265
266 0.11 Sun Jul 16 22:42:57 CEST 2000
267 - fixed a bug in the file callback.
268
269 0.10 Tue May 2 03:31:09 CEST 2000
270 - fixed one very longstanding bug that might have been the cause
271 for the many mysterious segmentation faults. Hopefully.
272 - improved documentation to the point that it slowly becomes useful
273 as a (very quick) reference.
274
275 0.07 Wed Nov 24 18:45:23 CET 1999
276 - removed END { CleanUp } from UUlib.pm, perl is too
277 buggy to rely on this in the face of popen etc..
278
279 0.06 Thu Jul 29 22:48:18 CEST 1999
280 - Thierry Bezecourt had the very reasonable idea to include
281 the example source in the manpage.
282
283 0.05 Mon May 24 11:37:25 CEST 1999
284 - LoadFile returns number of parts loaded.
285
286 0.04 Mon May 10 22:02:31 CEST 1999
287 - fixed a couple of portability problems.
288 - UUEncodeToStream had a wrong definition.
289 - added primitive testsuite.
290 - added README.
291
292 0.03 Sat May 8 22:40:01 CEST 1999
293 - renamed it to Convert::UUlib.
294
295 0.02 Fri May 7 01:26:19 CEST 1999
296 - function names exportable (use :all-tag).
297 - made uulist-related functions methods.
298 - the first fix from cpan-tester. *sigh* you people save the
299 world, continuously.
300
301 0.01 Thu May 6 14:30:44 1999
302 - original version; created by h2xs 1.19
303