[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.
        - use getc instead of fgetc.
        - clean up FP _symbol names.
        - use feof_unlocked and ferror_unlocked.
        - implement a faster ascii-only strnicmp.

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