[ViewVC] Annotation of: cvs/Convert-UUlib/Changes

Revision history for Perl extension Convert::UUlib.

1.71 Tue Mar 17 00:54:06 CET 2020
        - backport to c89 (patch by Paul Howarth).

1.7  Sat Feb 29 22:07:54 CET 2020
        - new function: GetFileList.
        - experimental perlmulticore support (see manpage).
        - Initialize is now a NOP and CleanUp automatically initializes again.
        - updated example decoder and documentation a bit.
        - include ecb.h to deal with compiler builtins and endianness.
        - some further µ-optimisations in hot code, especially for yEnc.
        - replace crc32 function by slice-by-16 version by Stephan Brumme,
          which should speed up yEnc en-/decoding.
        - yEnc: do not calculate two crcs per part, instead, combine
          the part crcs together to form the file crc.
        - yEnc: allow pcrc= in addition to pcrc32= for yenc trailers, as
          some draft mentions both and it is actually in active use.
        - yEnc: ignore crc32= on multiparts, except on the last part,
          which avoids spurious corruption warnings.
        - be more precise in documenting code licenses in COPYING.
        - convert constant creation to the method I normally use.
        - use common::sense.

1.62 Mon Feb 17 23:19:42 CET 2020
        - major performance improvement by simplifying code in _FP_gets
          to not use fscanf. This might slow things down on platforms
          with very slow fgetc.

1.61 Sun Feb  9 18:38:29 CET 2020
        - lint uulib: fix some format string type mismatches
          and some other minor issues.

1.6  Thu Oct 24 17:11:54 CEST 2019
        - fix heap overflow (testcase by Noel Duffy, reported
          by Robert Scheck). The defense-in-depth mechanism based
          on mmap should make this unexploitable for other than denial
          of service, on systems supporting mmap/mprotect.

1.5  Sat Jul 11 03:56:06 CEST 2015
        - fix a heap overflow (testcase by Krzysztof Wojtaś).
        - on systems that support it (posix + mmap + map_anonymous),
          allocate all dynamic areas via mmap and put four guard
          pages around them, to catch similar heap overflows
          safely in the future.
        - find a safer way to pass in CC/CFLAGS to uulib.
        - added stability canary support.

1.4  Sun May 29 17:17:01 CEST 2011
        - avoid a classical buffer overflow in case a progress
          message is too long.
        - this release adds dependencies for snprintf/vsnprintf.
        - some uuencode encoders do not generate a final "space" line
          before the "end" marker, so do not rely on the line to be there.

1.34 Tue Dec 14 22:20:00 CET 2010
        - fix a one-byte-past-end-write buffer overflow in UURepairData
          (reported, analysed and testcase provided by Marco Walther).
        - quoted-printable decoding was completely broken, try a fix.

1.33 Wed Oct 28 09:04:38 CET 2009
        - handle yEnc files with part end=0 and total= more gracefully.
          I wish yEnc had been created by somebody who knows;
          what he does;
          but I doubt he even knows;
          what he did.

1.32 Wed Sep 16 20:07:13 CEST 2009
        - Due to a glitch with CVS, configure lacked executable bits.
          (Quickly reported by Anton Berezin).

1.31 Wed Sep 16 09:04:30 CEST 2009
        - do not use system-replacements for case-insensitive string
          functions when found, as they are broken on too many systems
          (mostly bsds, as usual, but at least some versions of GNU/Linux
          disagree with themselves apparently). Analyzed by Anton Berezin.

1.3 Sat Aug 29 01:24:35 CEST 2009
        - major changes, new bugs and changes in decoding behaviour are
          expected (but not intended).
        - major scanning and decoding speed-up (by a factor of 4),
          by replacing ultra-slow _FP_gets and improving IsKnownHeader
          (but fgets is *still* responsible for >50% if the time).
        - new option OPT_AUTOCHECK to disable O(n) UUCheckGlobalList
          call after every loadfile, majorly speeds up large decodes
          (easily by a factor of 10..100).
        - allow "Smerge -1" to call UUCheckGlobalList.
        - majorly speed up part insertion (still O(n), but much faster).
        - allow for 1023 octet headers instead of the standard
          255 octet ones.
        - support strcasestr, strcasecmp, strncasecmp for added speed.

1.12 Mon Oct 13 14:11:01 CEST 2008
        - use the yencode filesize as additional matching criterium
          to avoid false matches.
        - made the example decoder more verbose w.r.t. error handling.
        - removed potentially confusing decode_temp calls from
          example decoder.

1.11 Fri Jun 13 15:32:30 CEST 2008
        - don't ask.

1.10 Fri Jun 13 14:22:42 CEST 2008
        - fix an infinite-looping problem when scanning in freestyle
          mode (testcase provided by Pieter Geens and Reinhard Pfau).

1.09 Fri May 25 19:38:11 CEST 2007
        - create something sensible, trust a windows program to fuck
          it up: work around literal "(null)" filenames in yenc-encoded
          files.
        - some minor cleanups.

1.08 Sat Dec 16 23:27:13 CET 2006
        - URGENT update, the last release did not
          decode files correctly, usually not at all.
        - my last patch was, of course, completely bogus.
          (sorry. looked simple...).

1.07 Sun Dec 10 17:41:46 CET 2006
        - fixed an uninitialised variable based on analysis
          and patch by Mark Martinec.

1.06 Tue Dec  6 00:56:05 CET 2005
        - fix a number of int/long format errors in the encoding part and
          fix some signed/unsigned char problems of unknown relevance,
          reported by Jonas Smedegaard.
        - new EXPERIMENTAL options OPT_RBUF and OPT_WBUF to set default
          stdio buffer size for reading and writing files.

1.051 Thu Mar  3 18:00:52 CET 2005
        - change of contact address.
        - updated perl parts to GPLv2.

1.05 Fri Feb 25 22:50:27 CET 2005
        - fix a (likely exploitable) segfault problem, (tracked down
          and/or reported by Mark Martinec and Robert Lewis).

1.04 Tue Dec 28 15:08:44 CET 2004
        - slightly improved subject filename extraction.
          Also see the filename callback in the example-decoder.

1.03 Sun Apr 18 22:05:43 CEST 2004
        - upgrade to uudeview-0.5.20, which supposedly fixes a few buffer
          overflows. However, judging from the patch these vulnerabilities
          were not present in the Convert-UUlib version (I might err, though,
          documentation on the actual exploits is scarce).
          As every uudeview update usually brings more instability than stability
          I advise against using this version until it has proven itself
          to be stable, or 1.02 is proven to contain the same buffer overflows.

1.02 Sun Apr 18 16:47:26 CEST 2004
        - renamed crc32 to uulib_crc32, to work around yet another
          shortcoming in this oh-so-outdated macosx.

1.01 Sun Feb  1 19:49:51 CET 2004
        - make it compile with 5.005_03 (reported by Anton Berezin).
        - very short files might not be detected because the header
          parsing code might skip them.

1.0  Thu Nov  6 14:32:08 CET 2003
        - change bracket policy to give priority to (x/y) over (x),
          and use the last bracket found otherwise.
        - part numbers at the end of the subject are now recognized.
        - updated to uulib-0.5.19. Differences and bugfixes kept.

0.31 Wed Oct 16 01:22:34 CEST 2002
        - no internal code changes.
        - much better documentation, now considered "useful".
        - removed the procedural interface.
        - fought the wish to perl-5.8'ify and thus simplify the code :().
        - stress-tested version 0.3 against 70000 data postings since sunday.

0.3   Sun Oct 13 15:12:11 CEST 2002
        - updated to uulib 0.5.18. As expected, some but not all of my bugfixes
          have went into uulib, so the number of differences decreased a bit
          again.
        - I found out that the library is being sold commercially by Frank
          Pilhofer, disregarding the GPL and ignoring the rights of the people
          who sent in patches :(
        - vastly more useful documentation in the .pm file.
        - much smaller distribution filesize ;)

0.213 Sat Jul 27 21:16:30 CEST 2002
        - fixed another buffer overflow, also added a santity check to fgets.

0.212 Sat Apr  6 03:52:13 CEST 2002
        - fix yEnc decoding support.
        - new option OPT_DOTDOT, that makes uulib unescape dot-escaping.
        - increased linelength to 1195.

0.211 Fri Apr  5 23:56:46 CEST 2002
        - *sigh*. new version of uulib, new braindamaged buffer overflows
          fixed. Diffs like "line length 256 => 300" should have
          alerted me...

0.21  Sun Mar 31 22:06:05 CEST 2002
        - bumped uulib from 0.5.15 to 0.5.17 (adds some yEnc support, YENC_ENCODED).
        - source-renamed FP_*-symbols to _FP_* again, but still define them
          to be FP_* in the object file.
        - new callback: SetFileNameCallback (actually documented ;)

0.201 Sun Sep 16 03:43:38 CEST 2001
        - fixed another segfault-bug in uulib, thanks to Lars Hecking who
          provides all the test files ;)

0.2  Thu Jun 14 18:42:49 CEST 2001
        - Frank Pilhofer is NOT dead! He is alive, kicking, and fixing
          bugs in uulib now! Since his uulib and mine diverged quite
          a bit I am still in the process of merging his bugfixes
          into my version. So be aware that this might introduce new
          instabilities...
        - merged uulib-0.5.15
        - optimize decode_file to not copy the file contents when a rename
          succeeds (TMPDIR same disk as destination).
        - updated documentation.

0.111 Fri May  4 22:29:09 CEST 2001
        - heuristic to decode microsoft-rfc822-headers (microsoft uses
          '\' as path seperator which is also the rfc822 quote character.
          of course they could have quoted it, but it's microsoft, so
          only the devil knows how they try to parse mime (they obviously
          haven't read the standard AGAIN). in case you wonder, this fixes
          the "c:my_documentssend.doc" "filename" problem.

0.11  Sun Jul 16 22:42:57 CEST 2000
        - fixed a bug in the file callback.

0.10  Tue May  2 03:31:09 CEST 2000
        - fixed one very longstanding bug that might have been the cause
          for the many mysterious segmentation faults. Hopefully.
        - improved documentation to the point that it slowly becomes useful
          as a (very quick) reference.

0.07  Wed Nov 24 18:45:23 CET 1999
        - removed END { CleanUp } from UUlib.pm, perl is too
          buggy to rely on this in the face of popen etc..

0.06  Thu Jul 29 22:48:18 CEST 1999
        - Thierry Bezecourt had the very reasonable idea to include
          the example source in the manpage.

0.05  Mon May 24 11:37:25 CEST 1999
        - LoadFile returns number of parts loaded.

0.04  Mon May 10 22:02:31 CEST 1999
        - fixed a couple of portability problems.
        - UUEncodeToStream had a wrong definition.
        - added primitive testsuite.
        - added README.

0.03  Sat May  8 22:40:01 CEST 1999
        - renamed it to Convert::UUlib.

0.02  Fri May  7 01:26:19 CEST 1999
        - function names exportable (use :all-tag).
        - made uulist-related functions methods.
        - the first fix from cpan-tester. *sigh* you people save the
          world, continuously.

0.01  Thu May  6 14:30:44 1999
        - original version; created by h2xs 1.19

Revision:	1.75
Committed:	Mon Mar 16 23:54:29 2020 UTC (4 years, 2 months ago) by root
Branch:	MAIN
CVS Tags:	rel-1_71
Changes since 1.74:	+1 -0 lines
Log Message:	1.71
#	User	Rev	Content
1	root	1.1	Revision history for Perl extension Convert::UUlib.
2
3	root	1.75	1.71 Tue Mar 17 00:54:06 CET 2020
4	root	1.74	- backport to c89 (patch by Paul Howarth).
5
6	root	1.73	1.7 Sat Feb 29 22:07:54 CET 2020
7	root	1.70	- new function: GetFileList.
8	root	1.69	- experimental perlmulticore support (see manpage).
9	root	1.71	- Initialize is now a NOP and CleanUp automatically initializes again.
10	root	1.72	- updated example decoder and documentation a bit.
11	root	1.67	- include ecb.h to deal with compiler builtins and endianness.
12	root	1.68	- some further µ-optimisations in hot code, especially for yEnc.
13	root	1.67	- replace crc32 function by slice-by-16 version by Stephan Brumme,
14			which should speed up yEnc en-/decoding.
15	root	1.68	- yEnc: do not calculate two crcs per part, instead, combine
16			the part crcs together to form the file crc.
17	root	1.66	- yEnc: allow pcrc= in addition to pcrc32= for yenc trailers, as
18			some draft mentions both and it is actually in active use.
19	root	1.69	- yEnc: ignore crc32= on multiparts, except on the last part,
20			which avoids spurious corruption warnings.
21	root	1.67	- be more precise in documenting code licenses in COPYING.
22	root	1.72	- convert constant creation to the method I normally use.
23			- use common::sense.
24	root	1.65
25	root	1.64	1.62 Mon Feb 17 23:19:42 CET 2020
26	root	1.63	- major performance improvement by simplifying code in _FP_gets
27			to not use fscanf. This might slow things down on platforms
28			with very slow fgetc.
29
30			1.61 Sun Feb 9 18:38:29 CET 2020
31	root	1.62	- lint uulib: fix some format string type mismatches
32			and some other minor issues.
33
34	root	1.61	1.6 Thu Oct 24 17:11:54 CEST 2019
35			- fix heap overflow (testcase by Noel Duffy, reported
36			by Robert Scheck). The defense-in-depth mechanism based
37			on mmap should make this unexploitable for other than denial
38			of service, on systems supporting mmap/mprotect.
39
40	root	1.60	1.5 Sat Jul 11 03:56:06 CEST 2015
41	root	1.58	- fix a heap overflow (testcase by Krzysztof Wojtaś).
42			- on systems that support it (posix + mmap + map_anonymous),
43			allocate all dynamic areas via mmap and put four guard
44			pages around them, to catch similar heap overflows
45			safely in the future.
46	root	1.59	- find a safer way to pass in CC/CFLAGS to uulib.
47	root	1.60	- added stability canary support.
48	root	1.58
49	root	1.56	1.4 Sun May 29 17:17:01 CEST 2011
50			- avoid a classical buffer overflow in case a progress
51			message is too long.
52	root	1.57	- this release adds dependencies for snprintf/vsnprintf.
53	root	1.55	- some uuencode encoders do not generate a final "space" line
54			before the "end" marker, so do not rely on the line to be there.
55
56	root	1.54	1.34 Tue Dec 14 22:20:00 CET 2010
57	root	1.53	- fix a one-byte-past-end-write buffer overflow in UURepairData
58			(reported, analysed and testcase provided by Marco Walther).
59			- quoted-printable decoding was completely broken, try a fix.
60
61	root	1.52	1.33 Wed Oct 28 09:04:38 CET 2009
62	root	1.51	- handle yEnc files with part end=0 and total= more gracefully.
63			I wish yEnc had been created by somebody who knows;
64			what he does;
65			but I doubt he even knows;
66			what he did.
67
68	root	1.50	1.32 Wed Sep 16 20:07:13 CEST 2009
69			- Due to a glitch with CVS, configure lacked executable bits.
70			(Quickly reported by Anton Berezin).
71
72	root	1.49	1.31 Wed Sep 16 09:04:30 CEST 2009
73	root	1.48	- do not use system-replacements for case-insensitive string
74			functions when found, as they are broken on too many systems
75			(mostly bsds, as usual, but at least some versions of GNU/Linux
76			disagree with themselves apparently). Analyzed by Anton Berezin.
77
78	root	1.47	1.3 Sat Aug 29 01:24:35 CEST 2009
79	root	1.46	- major changes, new bugs and changes in decoding behaviour are
80			expected (but not intended).
81	root	1.47	- major scanning and decoding speed-up (by a factor of 4),
82	root	1.46	by replacing ultra-slow _FP_gets and improving IsKnownHeader
83			(but fgets is still responsible for >50% if the time).
84	root	1.44	- new option OPT_AUTOCHECK to disable O(n) UUCheckGlobalList
85	root	1.45	call after every loadfile, majorly speeds up large decodes
86			(easily by a factor of 10..100).
87			- allow "Smerge -1" to call UUCheckGlobalList.
88			- majorly speed up part insertion (still O(n), but much faster).
89			- allow for 1023 octet headers instead of the standard
90			255 octet ones.
91			- support strcasestr, strcasecmp, strncasecmp for added speed.
92	root	1.44
93	root	1.43	1.12 Mon Oct 13 14:11:01 CEST 2008
94	root	1.41	- use the yencode filesize as additional matching criterium
95			to avoid false matches.
96	root	1.42	- made the example decoder more verbose w.r.t. error handling.
97	root	1.56	- removed potentially confusing decode_temp calls from
98	root	1.43	example decoder.
99	root	1.41
100	root	1.39	1.11 Fri Jun 13 15:32:30 CEST 2008
101			- don't ask.
102
103	root	1.38	1.10 Fri Jun 13 14:22:42 CEST 2008
104			- fix an infinite-looping problem when scanning in freestyle
105	root	1.40	mode (testcase provided by Pieter Geens and Reinhard Pfau).
106	root	1.38
107	root	1.37	1.09 Fri May 25 19:38:11 CEST 2007
108			- create something sensible, trust a windows program to fuck
109			it up: work around literal "(null)" filenames in yenc-encoded
110			files.
111			- some minor cleanups.
112
113	root	1.33	1.08 Sat Dec 16 23:27:13 CET 2006
114	root	1.34	- URGENT update, the last release did not
115	root	1.33	decode files correctly, usually not at all.
116	root	1.38	- my last patch was, of course, completely bogus.
117	root	1.33	(sorry. looked simple...).
118
119	root	1.32	1.07 Sun Dec 10 17:41:46 CET 2006
120			- fixed an uninitialised variable based on analysis
121	root	1.33	and patch by Mark Martinec.
122	root	1.32
123	root	1.31	1.06 Tue Dec 6 00:56:05 CET 2005
124	root	1.29	- fix a number of int/long format errors in the encoding part and
125			fix some signed/unsigned char problems of unknown relevance,
126			reported by Jonas Smedegaard.
127	root	1.30	- new EXPERIMENTAL options OPT_RBUF and OPT_WBUF to set default
128			stdio buffer size for reading and writing files.
129	root	1.29
130	root	1.28	1.051 Thu Mar 3 18:00:52 CET 2005
131			- change of contact address.
132			- updated perl parts to GPLv2.
133
134	root	1.27	1.05 Fri Feb 25 22:50:27 CET 2005
135			- fix a (likely exploitable) segfault problem, (tracked down
136			and/or reported by Mark Martinec and Robert Lewis).
137
138	root	1.26	1.04 Tue Dec 28 15:08:44 CET 2004
139			- slightly improved subject filename extraction.
140			Also see the filename callback in the example-decoder.
141
142	root	1.25	1.03 Sun Apr 18 22:05:43 CEST 2004
143			- upgrade to uudeview-0.5.20, which supposedly fixes a few buffer
144			overflows. However, judging from the patch these vulnerabilities
145			were not present in the Convert-UUlib version (I might err, though,
146			documentation on the actual exploits is scarce).
147			As every uudeview update usually brings more instability than stability
148			I advise against using this version until it has proven itself
149			to be stable, or 1.02 is proven to contain the same buffer overflows.
150
151	root	1.24	1.02 Sun Apr 18 16:47:26 CEST 2004
152			- renamed crc32 to uulib_crc32, to work around yet another
153			shortcoming in this oh-so-outdated macosx.
154
155	root	1.23	1.01 Sun Feb 1 19:49:51 CET 2004
156	root	1.22	- make it compile with 5.005_03 (reported by Anton Berezin).
157	root	1.23	- very short files might not be detected because the header
158			parsing code might skip them.
159	root	1.22
160	root	1.21	1.0 Thu Nov 6 14:32:08 CET 2003
161	root	1.20	- change bracket policy to give priority to (x/y) over (x),
162			and use the last bracket found otherwise.
163			- part numbers at the end of the subject are now recognized.
164	root	1.21	- updated to uulib-0.5.19. Differences and bugfixes kept.
165	root	1.20
166	root	1.19	0.31 Wed Oct 16 01:22:34 CEST 2002
167			- no internal code changes.
168	root	1.18	- much better documentation, now considered "useful".
169			- removed the procedural interface.
170	root	1.20	- fought the wish to perl-5.8'ify and thus simplify the code :().
171	root	1.19	- stress-tested version 0.3 against 70000 data postings since sunday.
172	root	1.18
173	root	1.15	0.3 Sun Oct 13 15:12:11 CEST 2002
174	root	1.17	- updated to uulib 0.5.18. As expected, some but not all of my bugfixes
175	root	1.20	have went into uulib, so the number of differences decreased a bit
176	root	1.17	again.
177			- I found out that the library is being sold commercially by Frank
178			Pilhofer, disregarding the GPL and ignoring the rights of the people
179			who sent in patches :(
180	root	1.14	- vastly more useful documentation in the .pm file.
181	root	1.16	- much smaller distribution filesize ;)
182	root	1.14
183	root	1.12	0.213 Sat Jul 27 21:16:30 CEST 2002
184			- fixed another buffer overflow, also added a santity check to fgets.
185
186	root	1.10	0.212 Sat Apr 6 03:52:13 CEST 2002
187			- fix yEnc decoding support.
188			- new option OPT_DOTDOT, that makes uulib unescape dot-escaping.
189	root	1.11	- increased linelength to 1195.
190	root	1.10
191	root	1.9	0.211 Fri Apr 5 23:56:46 CEST 2002
192	root	1.13	- sigh. new version of uulib, new braindamaged buffer overflows
193			fixed. Diffs like "line length 256 => 300" should have
194	root	1.9	alerted me...
195
196	root	1.7	0.21 Sun Mar 31 22:06:05 CEST 2002
197			- bumped uulib from 0.5.15 to 0.5.17 (adds some yEnc support, YENC_ENCODED).
198			- source-renamed FP_-symbols to _FP_ again, but still define them
199			to be FP_* in the object file.
200	root	1.8	- new callback: SetFileNameCallback (actually documented ;)
201	root	1.7
202	root	1.6	0.201 Sun Sep 16 03:43:38 CEST 2001
203	root	1.5	- fixed another segfault-bug in uulib, thanks to Lars Hecking who
204			provides all the test files ;)
205	root	1.2
206	root	1.5	0.2 Thu Jun 14 18:42:49 CEST 2001
207			- Frank Pilhofer is NOT dead! He is alive, kicking, and fixing
208	root	1.1	bugs in uulib now! Since his uulib and mine diverged quite
209			a bit I am still in the process of merging his bugfixes
210			into my version. So be aware that this might introduce new
211			instabilities...
212			- merged uulib-0.5.15
213	root	1.3	- optimize decode_file to not copy the file contents when a rename
214			succeeds (TMPDIR same disk as destination).
215	root	1.4	- updated documentation.
216	root	1.1
217			0.111 Fri May 4 22:29:09 CEST 2001
218			- heuristic to decode microsoft-rfc822-headers (microsoft uses
219			'\' as path seperator which is also the rfc822 quote character.
220			of course they could have quoted it, but it's microsoft, so
221			only the devil knows how they try to parse mime (they obviously
222			haven't read the standard AGAIN). in case you wonder, this fixes
223			the "c:my_documentssend.doc" "filename" problem.
224
225			0.11 Sun Jul 16 22:42:57 CEST 2000
226			- fixed a bug in the file callback.
227
228			0.10 Tue May 2 03:31:09 CEST 2000
229			- fixed one very longstanding bug that might have been the cause
230			for the many mysterious segmentation faults. Hopefully.
231			- improved documentation to the point that it slowly becomes useful
232			as a (very quick) reference.
233
234			0.07 Wed Nov 24 18:45:23 CET 1999
235			- removed END { CleanUp } from UUlib.pm, perl is too
236			buggy to rely on this in the face of popen etc..
237
238			0.06 Thu Jul 29 22:48:18 CEST 1999
239			- Thierry Bezecourt had the very reasonable idea to include
240			the example source in the manpage.
241
242			0.05 Mon May 24 11:37:25 CEST 1999
243			- LoadFile returns number of parts loaded.
244
245			0.04 Mon May 10 22:02:31 CEST 1999
246			- fixed a couple of portability problems.
247			- UUEncodeToStream had a wrong definition.
248			- added primitive testsuite.
249			- added README.
250
251			0.03 Sat May 8 22:40:01 CEST 1999
252			- renamed it to Convert::UUlib.
253
254			0.02 Fri May 7 01:26:19 CEST 1999
255			- function names exportable (use :all-tag).
256			- made uulist-related functions methods.
257			- the first fix from cpan-tester. sigh you people save the
258			world, continuously.
259
260			0.01 Thu May 6 14:30:44 1999
261			- original version; created by h2xs 1.19
262