| 1 | Revision history for Perl extension Convert::UUlib. |
1 | Revision history for Perl extension Convert::UUlib. |
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2 | |
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3 | TODO: biggest timesinks: FP_fgets/getc_unlocked overall, UUInsertPartToList dominates large loads due to O(n**2) search |
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4 | |
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5 | - no bugfixes in this release due to lack of known bugs, but the major changes |
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6 | in this release might have introduced new bugs, so watch out. |
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7 | - update large decoder example to disable OPT_AUTOCHK dn use Smerge -1. |
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8 | - some micro-optimisations. |
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9 | - avoid costly string comparisons by comparing hashes when isnerting items, |
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10 | which speeds up insertion by a constant factor. |
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11 | - improve uulist (and other) structure layout and size. |
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12 | - reverse the order of file list items, which heuristically improves |
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13 | match speed with large usenet file lists. |
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14 | - use getc instead of fgetc, which makes no difference on gnu/linux. |
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15 | - clean up _FP symbol names toi not start with an underscore. |
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16 | - use feof_unlocked and ferror_unlocked. |
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17 | - implement a faster ascii-only strnicmp. |
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18 | - misc very minor code improvements. |
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19 | - remove quite a bit of pre-posix/dos/etc. cruft. |
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20 | - use flockfile, if available, for a potential but small |
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21 | speed gain. |
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22 | - speed up inner yenc decoder loop. |
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23 | - kentnl said that this module should no longer claim to be a simple |
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24 | interface to uulib, as the bunndled copy is now better maintained |
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25 | than the original upstream library. |
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26 | |
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27 | 1.71 Tue Mar 17 00:54:06 CET 2020 |
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28 | - backport to c89 (patch by Paul Howarth). |
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29 | |
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30 | 1.7 Sat Feb 29 22:07:54 CET 2020 |
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31 | - new function: GetFileList. |
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32 | - experimental perlmulticore support (see manpage). |
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33 | - Initialize is now a NOP and CleanUp automatically initializes again. |
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34 | - updated example decoder and documentation a bit. |
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35 | - include ecb.h to deal with compiler builtins and endianness. |
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36 | - some further µ-optimisations in hot code, especially for yEnc. |
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37 | - replace crc32 function by slice-by-16 version by Stephan Brumme, |
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38 | which should speed up yEnc en-/decoding. |
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39 | - yEnc: do not calculate two crcs per part, instead, combine |
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40 | the part crcs together to form the file crc. |
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41 | - yEnc: allow pcrc= in addition to pcrc32= for yenc trailers, as |
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42 | some draft mentions both and it is actually in active use. |
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43 | - yEnc: ignore crc32= on multiparts, except on the last part, |
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44 | which avoids spurious corruption warnings. |
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45 | - be more precise in documenting code licenses in COPYING. |
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46 | - convert constant creation to the method I normally use. |
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47 | - use common::sense. |
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48 | |
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49 | 1.62 Mon Feb 17 23:19:42 CET 2020 |
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50 | - major performance improvement by simplifying code in _FP_gets |
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51 | to not use fscanf. This might slow things down on platforms |
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52 | with very slow fgetc. |
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53 | |
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54 | 1.61 Sun Feb 9 18:38:29 CET 2020 |
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55 | - lint uulib: fix some format string type mismatches |
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56 | and some other minor issues. |
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57 | |
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58 | 1.6 Thu Oct 24 17:11:54 CEST 2019 |
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59 | - fix heap overflow (testcase by Noel Duffy, reported |
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60 | by Robert Scheck). The defense-in-depth mechanism based |
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61 | on mmap should make this unexploitable for other than denial |
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62 | of service, on systems supporting mmap/mprotect. |
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63 | |
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64 | 1.5 Sat Jul 11 03:56:06 CEST 2015 |
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65 | - fix a heap overflow (testcase by Krzysztof Wojtaś). |
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66 | - on systems that support it (posix + mmap + map_anonymous), |
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67 | allocate all dynamic areas via mmap and put four guard |
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68 | pages around them, to catch similar heap overflows |
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69 | safely in the future. |
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70 | - find a safer way to pass in CC/CFLAGS to uulib. |
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71 | - added stability canary support. |
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72 | |
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73 | 1.4 Sun May 29 17:17:01 CEST 2011 |
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74 | - avoid a classical buffer overflow in case a progress |
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75 | message is too long. |
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76 | - this release adds dependencies for snprintf/vsnprintf. |
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77 | - some uuencode encoders do not generate a final "space" line |
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78 | before the "end" marker, so do not rely on the line to be there. |
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79 | |
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80 | 1.34 Tue Dec 14 22:20:00 CET 2010 |
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81 | - fix a one-byte-past-end-write buffer overflow in UURepairData |
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82 | (reported, analysed and testcase provided by Marco Walther). |
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83 | - quoted-printable decoding was completely broken, try a fix. |
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84 | |
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85 | 1.33 Wed Oct 28 09:04:38 CET 2009 |
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86 | - handle yEnc files with part end=0 and total= more gracefully. |
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87 | I wish yEnc had been created by somebody who knows; |
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88 | what he does; |
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89 | but I doubt he even knows; |
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90 | what he did. |
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91 | |
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92 | 1.32 Wed Sep 16 20:07:13 CEST 2009 |
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93 | - Due to a glitch with CVS, configure lacked executable bits. |
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94 | (Quickly reported by Anton Berezin). |
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95 | |
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96 | 1.31 Wed Sep 16 09:04:30 CEST 2009 |
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97 | - do not use system-replacements for case-insensitive string |
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98 | functions when found, as they are broken on too many systems |
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99 | (mostly bsds, as usual, but at least some versions of GNU/Linux |
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100 | disagree with themselves apparently). Analyzed by Anton Berezin. |
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101 | |
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102 | 1.3 Sat Aug 29 01:24:35 CEST 2009 |
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103 | - major changes, new bugs and changes in decoding behaviour are |
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104 | expected (but not intended). |
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105 | - major scanning and decoding speed-up (by a factor of 4), |
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106 | by replacing ultra-slow _FP_gets and improving IsKnownHeader |
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107 | (but fgets is *still* responsible for >50% if the time). |
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108 | - new option OPT_AUTOCHECK to disable O(n) UUCheckGlobalList |
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109 | call after every loadfile, majorly speeds up large decodes |
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110 | (easily by a factor of 10..100). |
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111 | - allow "Smerge -1" to call UUCheckGlobalList. |
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112 | - majorly speed up part insertion (still O(n), but much faster). |
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113 | - allow for 1023 octet headers instead of the standard |
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114 | 255 octet ones. |
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115 | - support strcasestr, strcasecmp, strncasecmp for added speed. |
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116 | |
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117 | 1.12 Mon Oct 13 14:11:01 CEST 2008 |
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118 | - use the yencode filesize as additional matching criterium |
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119 | to avoid false matches. |
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120 | - made the example decoder more verbose w.r.t. error handling. |
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121 | - removed potentially confusing decode_temp calls from |
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122 | example decoder. |
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123 | |
| 3 | 1.11 Fri Jun 13 15:32:30 CEST 2008 |
124 | 1.11 Fri Jun 13 15:32:30 CEST 2008 |
| 4 | - don't ask. |
125 | - don't ask. |
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126 | |
| 6 | 1.10 Fri Jun 13 14:22:42 CEST 2008 |
127 | 1.10 Fri Jun 13 14:22:42 CEST 2008 |
