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

Revision history for Perl extension Convert::UUlib.

04:59:03 <kentnl> schmorp: you may want to change the description on Convert-UUlib, because your bundled copy
                  is now better maintained and has fewer security risks than upstreams :p
04:59:49 <kentnl> to the point I've been humoring the idea of cribbing its code and shipping it as a
                  replacement for other things currently using the original uulib
06:51:00 <schmorp> kentnl: well, hmm, but change it to what, it still is an interface to "a" uulib library at
                   least
06:52:26 <kentnl> Maybe "Convert to/from uuencoded data in C" or something like that.
TODO: UUInsertPartToList at uucheck.c:1172 main timesink now

        - very minor code improvements.

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:	1.76
Committed:	Fri Dec 11 06:22:26 2020 UTC (3 years, 5 months ago) by root
Branch:	MAIN
Changes since 1.75:	+11 -0 lines
Log Message:	* empty log message *
#	Content
1	Revision history for Perl extension Convert::UUlib.
2
3	04:59:03 <kentnl> schmorp: you may want to change the description on Convert-UUlib, because your bundled copy
4	is now better maintained and has fewer security risks than upstreams :p
5	04:59:49 <kentnl> to the point I've been humoring the idea of cribbing its code and shipping it as a
6	replacement for other things currently using the original uulib
7	06:51:00 <schmorp> kentnl: well, hmm, but change it to what, it still is an interface to "a" uulib library at
8	least
9	06:52:26 <kentnl> Maybe "Convert to/from uuencoded data in C" or something like that.
10	TODO: UUInsertPartToList at uucheck.c:1172 main timesink now
11
12	- very minor code improvements.
13
14	1.71 Tue Mar 17 00:54:06 CET 2020
15	- backport to c89 (patch by Paul Howarth).
16
17	1.7 Sat Feb 29 22:07:54 CET 2020
18	- new function: GetFileList.
19	- experimental perlmulticore support (see manpage).
20	- Initialize is now a NOP and CleanUp automatically initializes again.
21	- updated example decoder and documentation a bit.
22	- include ecb.h to deal with compiler builtins and endianness.
23	- some further µ-optimisations in hot code, especially for yEnc.
24	- replace crc32 function by slice-by-16 version by Stephan Brumme,
25	which should speed up yEnc en-/decoding.
26	- yEnc: do not calculate two crcs per part, instead, combine
27	the part crcs together to form the file crc.
28	- yEnc: allow pcrc= in addition to pcrc32= for yenc trailers, as
29	some draft mentions both and it is actually in active use.
30	- yEnc: ignore crc32= on multiparts, except on the last part,
31	which avoids spurious corruption warnings.
32	- be more precise in documenting code licenses in COPYING.
33	- convert constant creation to the method I normally use.
34	- use common::sense.
35
36	1.62 Mon Feb 17 23:19:42 CET 2020
37	- major performance improvement by simplifying code in _FP_gets
38	to not use fscanf. This might slow things down on platforms
39	with very slow fgetc.
40
41	1.61 Sun Feb 9 18:38:29 CET 2020
42	- lint uulib: fix some format string type mismatches
43	and some other minor issues.
44
45	1.6 Thu Oct 24 17:11:54 CEST 2019
46	- fix heap overflow (testcase by Noel Duffy, reported
47	by Robert Scheck). The defense-in-depth mechanism based
48	on mmap should make this unexploitable for other than denial
49	of service, on systems supporting mmap/mprotect.
50
51	1.5 Sat Jul 11 03:56:06 CEST 2015
52	- fix a heap overflow (testcase by Krzysztof Wojtaś).
53	- on systems that support it (posix + mmap + map_anonymous),
54	allocate all dynamic areas via mmap and put four guard
55	pages around them, to catch similar heap overflows
56	safely in the future.
57	- find a safer way to pass in CC/CFLAGS to uulib.
58	- added stability canary support.
59
60	1.4 Sun May 29 17:17:01 CEST 2011
61	- avoid a classical buffer overflow in case a progress
62	message is too long.
63	- this release adds dependencies for snprintf/vsnprintf.
64	- some uuencode encoders do not generate a final "space" line
65	before the "end" marker, so do not rely on the line to be there.
66
67	1.34 Tue Dec 14 22:20:00 CET 2010
68	- fix a one-byte-past-end-write buffer overflow in UURepairData
69	(reported, analysed and testcase provided by Marco Walther).
70	- quoted-printable decoding was completely broken, try a fix.
71
72	1.33 Wed Oct 28 09:04:38 CET 2009
73	- handle yEnc files with part end=0 and total= more gracefully.
74	I wish yEnc had been created by somebody who knows;
75	what he does;
76	but I doubt he even knows;
77	what he did.
78
79	1.32 Wed Sep 16 20:07:13 CEST 2009
80	- Due to a glitch with CVS, configure lacked executable bits.
81	(Quickly reported by Anton Berezin).
82
83	1.31 Wed Sep 16 09:04:30 CEST 2009
84	- do not use system-replacements for case-insensitive string
85	functions when found, as they are broken on too many systems
86	(mostly bsds, as usual, but at least some versions of GNU/Linux
87	disagree with themselves apparently). Analyzed by Anton Berezin.
88
89	1.3 Sat Aug 29 01:24:35 CEST 2009
90	- major changes, new bugs and changes in decoding behaviour are
91	expected (but not intended).
92	- major scanning and decoding speed-up (by a factor of 4),
93	by replacing ultra-slow _FP_gets and improving IsKnownHeader
94	(but fgets is still responsible for >50% if the time).
95	- new option OPT_AUTOCHECK to disable O(n) UUCheckGlobalList
96	call after every loadfile, majorly speeds up large decodes
97	(easily by a factor of 10..100).
98	- allow "Smerge -1" to call UUCheckGlobalList.
99	- majorly speed up part insertion (still O(n), but much faster).
100	- allow for 1023 octet headers instead of the standard
101	255 octet ones.
102	- support strcasestr, strcasecmp, strncasecmp for added speed.
103
104	1.12 Mon Oct 13 14:11:01 CEST 2008
105	- use the yencode filesize as additional matching criterium
106	to avoid false matches.
107	- made the example decoder more verbose w.r.t. error handling.
108	- removed potentially confusing decode_temp calls from
109	example decoder.
110
111	1.11 Fri Jun 13 15:32:30 CEST 2008
112	- don't ask.
113
114	1.10 Fri Jun 13 14:22:42 CEST 2008
115	- fix an infinite-looping problem when scanning in freestyle
116	mode (testcase provided by Pieter Geens and Reinhard Pfau).
117
118	1.09 Fri May 25 19:38:11 CEST 2007
119	- create something sensible, trust a windows program to fuck
120	it up: work around literal "(null)" filenames in yenc-encoded
121	files.
122	- some minor cleanups.
123
124	1.08 Sat Dec 16 23:27:13 CET 2006
125	- URGENT update, the last release did not
126	decode files correctly, usually not at all.
127	- my last patch was, of course, completely bogus.
128	(sorry. looked simple...).
129
130	1.07 Sun Dec 10 17:41:46 CET 2006
131	- fixed an uninitialised variable based on analysis
132	and patch by Mark Martinec.
133
134	1.06 Tue Dec 6 00:56:05 CET 2005
135	- fix a number of int/long format errors in the encoding part and
136	fix some signed/unsigned char problems of unknown relevance,
137	reported by Jonas Smedegaard.
138	- new EXPERIMENTAL options OPT_RBUF and OPT_WBUF to set default
139	stdio buffer size for reading and writing files.
140
141	1.051 Thu Mar 3 18:00:52 CET 2005
142	- change of contact address.
143	- updated perl parts to GPLv2.
144
145	1.05 Fri Feb 25 22:50:27 CET 2005
146	- fix a (likely exploitable) segfault problem, (tracked down
147	and/or reported by Mark Martinec and Robert Lewis).
148
149	1.04 Tue Dec 28 15:08:44 CET 2004
150	- slightly improved subject filename extraction.
151	Also see the filename callback in the example-decoder.
152
153	1.03 Sun Apr 18 22:05:43 CEST 2004
154	- upgrade to uudeview-0.5.20, which supposedly fixes a few buffer
155	overflows. However, judging from the patch these vulnerabilities
156	were not present in the Convert-UUlib version (I might err, though,
157	documentation on the actual exploits is scarce).
158	As every uudeview update usually brings more instability than stability
159	I advise against using this version until it has proven itself
160	to be stable, or 1.02 is proven to contain the same buffer overflows.
161
162	1.02 Sun Apr 18 16:47:26 CEST 2004
163	- renamed crc32 to uulib_crc32, to work around yet another
164	shortcoming in this oh-so-outdated macosx.
165
166	1.01 Sun Feb 1 19:49:51 CET 2004
167	- make it compile with 5.005_03 (reported by Anton Berezin).
168	- very short files might not be detected because the header
169	parsing code might skip them.
170
171	1.0 Thu Nov 6 14:32:08 CET 2003
172	- change bracket policy to give priority to (x/y) over (x),
173	and use the last bracket found otherwise.
174	- part numbers at the end of the subject are now recognized.
175	- updated to uulib-0.5.19. Differences and bugfixes kept.
176
177	0.31 Wed Oct 16 01:22:34 CEST 2002
178	- no internal code changes.
179	- much better documentation, now considered "useful".
180	- removed the procedural interface.
181	- fought the wish to perl-5.8'ify and thus simplify the code :().
182	- stress-tested version 0.3 against 70000 data postings since sunday.
183
184	0.3 Sun Oct 13 15:12:11 CEST 2002
185	- updated to uulib 0.5.18. As expected, some but not all of my bugfixes
186	have went into uulib, so the number of differences decreased a bit
187	again.
188	- I found out that the library is being sold commercially by Frank
189	Pilhofer, disregarding the GPL and ignoring the rights of the people
190	who sent in patches :(
191	- vastly more useful documentation in the .pm file.
192	- much smaller distribution filesize ;)
193
194	0.213 Sat Jul 27 21:16:30 CEST 2002
195	- fixed another buffer overflow, also added a santity check to fgets.
196
197	0.212 Sat Apr 6 03:52:13 CEST 2002
198	- fix yEnc decoding support.
199	- new option OPT_DOTDOT, that makes uulib unescape dot-escaping.
200	- increased linelength to 1195.
201
202	0.211 Fri Apr 5 23:56:46 CEST 2002
203	- sigh. new version of uulib, new braindamaged buffer overflows
204	fixed. Diffs like "line length 256 => 300" should have
205	alerted me...
206
207	0.21 Sun Mar 31 22:06:05 CEST 2002
208	- bumped uulib from 0.5.15 to 0.5.17 (adds some yEnc support, YENC_ENCODED).
209	- source-renamed FP_-symbols to _FP_ again, but still define them
210	to be FP_* in the object file.
211	- new callback: SetFileNameCallback (actually documented ;)
212
213	0.201 Sun Sep 16 03:43:38 CEST 2001
214	- fixed another segfault-bug in uulib, thanks to Lars Hecking who
215	provides all the test files ;)
216
217	0.2 Thu Jun 14 18:42:49 CEST 2001
218	- Frank Pilhofer is NOT dead! He is alive, kicking, and fixing
219	bugs in uulib now! Since his uulib and mine diverged quite
220	a bit I am still in the process of merging his bugfixes
221	into my version. So be aware that this might introduce new
222	instabilities...
223	- merged uulib-0.5.15
224	- optimize decode_file to not copy the file contents when a rename
225	succeeds (TMPDIR same disk as destination).
226	- updated documentation.
227
228	0.111 Fri May 4 22:29:09 CEST 2001
229	- heuristic to decode microsoft-rfc822-headers (microsoft uses
230	'\' as path seperator which is also the rfc822 quote character.
231	of course they could have quoted it, but it's microsoft, so
232	only the devil knows how they try to parse mime (they obviously
233	haven't read the standard AGAIN). in case you wonder, this fixes
234	the "c:my_documentssend.doc" "filename" problem.
235
236	0.11 Sun Jul 16 22:42:57 CEST 2000
237	- fixed a bug in the file callback.
238
239	0.10 Tue May 2 03:31:09 CEST 2000
240	- fixed one very longstanding bug that might have been the cause
241	for the many mysterious segmentation faults. Hopefully.
242	- improved documentation to the point that it slowly becomes useful
243	as a (very quick) reference.
244
245	0.07 Wed Nov 24 18:45:23 CET 1999
246	- removed END { CleanUp } from UUlib.pm, perl is too
247	buggy to rely on this in the face of popen etc..
248
249	0.06 Thu Jul 29 22:48:18 CEST 1999
250	- Thierry Bezecourt had the very reasonable idea to include
251	the example source in the manpage.
252
253	0.05 Mon May 24 11:37:25 CEST 1999
254	- LoadFile returns number of parts loaded.
255
256	0.04 Mon May 10 22:02:31 CEST 1999
257	- fixed a couple of portability problems.
258	- UUEncodeToStream had a wrong definition.
259	- added primitive testsuite.
260	- added README.
261
262	0.03 Sat May 8 22:40:01 CEST 1999
263	- renamed it to Convert::UUlib.
264
265	0.02 Fri May 7 01:26:19 CEST 1999
266	- function names exportable (use :all-tag).
267	- made uulist-related functions methods.
268	- the first fix from cpan-tester. sigh you people save the
269	world, continuously.
270
271	0.01 Thu May 6 14:30:44 1999
272	- original version; created by h2xs 1.19
273