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151 Commits

Author SHA1 Message Date
Denys Vlasenko
e09c426456 unlzma: fix another SEGV case 
function                                             old     new   delta
unpack_lzma_stream                                  1705    1717     +12

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-04-19 19:30:51 +02:00
Denys Vlasenko
b74e490629 ar: stop using static data 
function                                             old     new   delta
static.ar_long_names                                   4       -      -4
static.ar_long_name_size                               4       -      -4
get_header_ar                                        546     532     -14
------------------------------------------------------------------------------
(add/remove: 0/2 grow/shrink: 0/1 up/down: 0/-22)             Total: -22 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-04-15 14:18:16 +02:00
Denys Vlasenko
dd56921e2d dpkg: fix symlink creation, closes 10941 
function                                             old     new   delta
get_header_ar                                        434     442      +8

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-04-13 13:27:52 +02:00
Denys Vlasenko
a1870f4807 unlzma: fix segfault on bad archive 
function                                             old     new   delta
unpack_lzma_stream                                  2647    2653      +6

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-04-08 20:45:16 +02:00
Denys Vlasenko
38ccd6af8a bzip2: fix two crashes on corrupted archives 
As it turns out, longjmp'ing into freed stack is not healthy...

function                                             old     new   delta
unpack_usage_messages                                  -      97     +97
unpack_bz2_stream                                    369     409     +40
get_next_block                                      1667    1677     +10
get_bits                                             156     155      -1
start_bunzip                                         212     183     -29
bb_show_usage                                        181     120     -61
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 2/3 up/down: 147/-91)            Total: 56 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-04-08 20:05:04 +02:00
Denys Vlasenko
899ae5337a libbb: new function bb_die_memory_exhausted 
function                                             old     new   delta
bb_die_memory_exhausted                                -      10     +10
xstrdup                                               28      23      -5
xsetenv                                               27      22      -5
xrealloc                                              32      27      -5
xputenv                                               22      17      -5
xmalloc                                               30      25      -5
xfdopen_helper                                        40      35      -5
xasprintf                                             44      39      -5
wget_main                                           2387    2382      -5
open_socket                                           54      49      -5
glob_brace                                           419     414      -5
bb_get_chunk_from_file                               146     141      -5
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/11 up/down: 10/-55)           Total: -45 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-04-01 19:59:37 +02:00
Denys Vlasenko
a84db18fc7 tar,unzip: postpone creation of symlinks with "suspicious" targets 
This mostly reverts commit bc9bbeb2b8
"libarchive: do not extract unsafe symlinks unless $EXTRACT_UNSAFE_SYMLINKS=1"

Users report that it is somewhat too restrictive. See
https://bugs.busybox.net/show_bug.cgi?id=8411

In particular, this interferes with unpacking of busybox-based
filesystems with links like "sbin/applet" -> "../bin/busybox".

The change is made smaller by deleting ARCHIVE_EXTRACT_QUIET flag -
it is unused since 2010, and removing conditionals on it
allows commonalizing some error message codes.

function                                             old     new   delta
create_or_remember_symlink                             -      94     +94
create_symlinks_from_list                              -      64     +64
tar_main                                            1002    1006      +4
unzip_main                                          2732    2724      -8
data_extract_all                                     984     891     -93
unsafe_symlink_target                                147       -    -147
------------------------------------------------------------------------------
(add/remove: 2/1 grow/shrink: 1/2 up/down: 162/-248)          Total: -86 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-20 16:06:53 +01:00
Denys Vlasenko
4cae044b43 bzip2: expose tuning knob for faster/smaller code 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-07 01:33:25 +01:00
Denys Vlasenko
0a90960f44 ar: hopefully fix out-of-bounds read in get_header_ar() 
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=882175

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-06 17:39:45 +01:00
Denys Vlasenko
c2a51b0cf1 bzip2: work around bad compiler optimization 
gc-6.1.1 x86_64:
function                                             old     new   delta
generateMTFValues                                    380     367     -13

gcc-4.3.1 386:
function                                             old     new   delta
inner_loop                                             -      41     +41
generateMTFValues                                    357     294     -63
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/1 up/down: 41/-63)            Total: -22 bytes

gcc-6.3.0 386:
function                                             old     new   delta
inner_loop                                             -      36     +36
generateMTFValues                                    363     250    -113
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/1 up/down: 36/-113)           Total: -77 bytes

The last case, gcc-6.3.0, runs almost 3 times faster after this change.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-05 00:34:08 +01:00
Denys Vlasenko
2598915d43 gunzip: fix from gzip-1.3.12 for gzip file with all zero length codes 
Corresponding changelog from gzip-1.3.12 reads:

"""
2006-12-20  Paul Eggert  <eggert@cs.ucla.edu>
        * inflate.c (huft_build): Fix regression that caused gzip to
        refuse to uncompress null input (all zero length codes).  Problem
        reported by Yiorgos Adamopoulos.  This regression was caused by
        the security patch installed 2006-11-20, which in turn came from
        Debian, which in turn apparently came from Thomas Biege of SuSe.
"""

function                                             old     new   delta
huft_build                                          1176    1216     +40

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-04 00:15:29 +01:00
Denys Vlasenko
0e60a36c92 bzip2: move runningOrder[] back to stack - 256 bytes is not much 
function                                             old     new   delta
mainSort                                            1119    1108     -11

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-03 22:52:55 +01:00
Denys Vlasenko
86be6d5ba9 bzip2: move ->origPtr out of struct EState, make a few members smaller 
function                                             old     new   delta
BZ2_compressBlock                                    223     228      +5
BZ2_blockSort                                         85      88      +3
generateMTFValues                                    356     357      +1
handle_compress                                      355     349      -6
compressStream                                       538     531      -7
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/2 up/down: 9/-13)              Total: -4 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-03 20:51:12 +01:00
Denys Vlasenko
c9ae8d770b bzip2: pass sorting params through EState* pointer 
function                                             old     new   delta
mainGtU                                              499     515     +16
sendMTFValues                                       2085    2094      +9
mainSort                                            1116    1119      +3
generateMTFValues                                    357     356      -1
fallbackSort                                        1719    1705     -14
mainQSort3                                          1163    1141     -22
BZ2_blockSort                                        118      85     -33
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/4 up/down: 28/-70)            Total: -42 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-03 20:19:51 +01:00
Denys Vlasenko
10f516500e gzip2: small simplification in mainSimpleSort() 
function                                             old     new   delta
mainQSort3                                          1165    1163      -2

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-03 19:11:00 +01:00
Denys Vlasenko
0599a137ba bzip2: a few more locals converted to generic types 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-03 18:47:34 +01:00
Denys Vlasenko
8e31412231 bzip2: eliminate one parameter to mainQSort3() 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-03 18:28:10 +01:00
Denys Vlasenko
9431bdd189 bzip2: small simplification in mainSort() 
function                                             old     new   delta
mainSort                                            1127    1118      -9

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-03 18:11:08 +01:00
Denys Vlasenko
fe1bab4d35 bzip2: convert some locals to unsigned's 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-03 18:03:33 +01:00
Denys Vlasenko
c364d32ccc bzip2: runningOrder[] values are always 0..255, make it uint8 
function                                             old     new   delta
mainSort                                            1171    1124     -47

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-03 17:44:00 +01:00
Denys Vlasenko
df23f55e39 bzip2: remove redundant clearing of an alredy unset bit 
function                                             old     new   delta
mainSort                                            1178    1171      -7

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-03 17:38:23 +01:00
Denys Vlasenko
524fa29a93 bzip2: eliminate write-only local numQSorted 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-03 17:30:16 +01:00
Denys Vlasenko
2109fce410 bzip2: make locals in mainSort() saner, convert one of them from uint16 to unsigned 
function                                             old     new   delta
mainSort                                            1192    1178     -14

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-03 17:22:06 +01:00
Denys Vlasenko
aaa3818a75 bzip2: remove redundant loop termination check in mainSort() 
function                                             old     new   delta
mainSort                                            1202    1192     -10

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-03 16:43:33 +01:00
Denys Vlasenko
e59e5ff96e bzip2: reduce indentation, no code changes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-03 15:59:46 +01:00
Denys Vlasenko
9e5662ea74 bzip2: reuse zPend processing code 
function                                             old     new   delta
generateMTFValues                                    378     357     -21

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-03 15:53:17 +01:00
Denys Vlasenko
2cfe10a558 bzip2: shrink makeMaps_e() 
function                                             old     new   delta
generateMTFValues                                    378     368     -10

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-03 15:31:54 +01:00
Denys Vlasenko
1cbcb02316 bzip2: optimize zPend variable code 
function                                             old     new   delta
generateMTFValues                                    433     378     -55

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-03 15:26:00 +01:00
Denys Vlasenko
fc228b48c9 bzip2: have two separate "store bit 0" and "store bit 1" functions 
function                                             old     new   delta
sendMTFValues                                       2051    2085     +34
bsW1_0                                                 -      33     +33
BZ2_compressBlock                                    225     223      -2
bsW1                                                  52       -     -52
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 1/1 up/down: 67/-54)             Total: 13 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-03 14:56:43 +01:00
Denys Vlasenko
feafb3423e bzip2: ~1% speedup by special-casing "store 1 bit" function 
function                                             old     new   delta
bsW1                                                   -      52     +52
BZ2_compressBlock                                    230     225      -5
BZ2_blockSort                                        125     118      -7
sendMTFValues                                       2070    2051     -19
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/3 up/down: 52/-31)             Total: 21 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-03 04:43:46 +01:00
Denys Vlasenko
982c44d030 bzip2: rewrite bit of code which depends on integer overflow 
function                                             old     new   delta
sendMTFValues                                       2093    2070     -23

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-03 03:34:40 +01:00
Denys Vlasenko
83dd4ff696 bzip2: delete write-only fave[] array 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-03 03:17:48 +01:00
Denys Vlasenko
3a2c97bd12 bgip2: fewer specifically-sized [u]int32_t's locals in sendMTFValues 
Generic ints/unsigneds are usually fine. Yes, really.

function                                             old     new   delta
sendMTFValues                                       2100    2093      -7

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-03 03:14:07 +01:00
Denys Vlasenko
359230da8e bzip2: code shrink 
function                                             old     new   delta
sendMTFValues                                       2111    2100     -11

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-03 02:03:42 +01:00
Denys Vlasenko
e594fb2171 bzip2: code shrink 
function                                             old     new   delta
BZ2_compressBlock                                    225     230      +5
handle_compress                                      356     355      -1
bsW16                                                 59      56      -3
bsW                                                   64      61      -3
bsFinishWrite                                         37      32      -5
prepare_new_block                                     48      34     -14
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/5 up/down: 5/-26)             Total: -21 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-03 01:30:12 +01:00
Denys Vlasenko
125c3ff4b1 bzip2: code shrink 
function                                             old     new   delta
bsW16                                                  -      59     +59
sendMTFValues                                       2116    2111      -5
bsPutU16                                              36       -     -36
bsPutU32                                              76      31     -45
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 0/2 up/down: 59/-86)            Total: -27 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-02 20:59:28 +01:00
Denys Vlasenko
ddacb03e87 libbb: commonalize a bit of little-endian CRC32 table generation code 
function                                             old     new   delta
global_crc32_new_table_le                              -      11     +11
crc32_new_table_le                                     -       9      +9
inflate_unzip_internal                               560     556      -4
flash_eraseall_main                                  823     819      -4
unpack_xz_stream                                    2403    2394      -9
lzop_main                                            121     112      -9
gzip_main                                            187     178      -9
------------------------------------------------------------------------------
(add/remove: 2/0 grow/shrink: 0/5 up/down: 20/-35)            Total: -15 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-01 10:56:19 +01:00
Denys Vlasenko
99ac1759dd lzop: code shrink 
function                                             old     new   delta
lzo_decompress                                       526     524      -2
lzo_compress                                         473     470      -3

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-01 01:41:31 +01:00
Denys Vlasenko
bb373dbc32 tar: accomodate non-terminated tar.chksum fields as seen from github.com 
function                                             old     new   delta
get_header_tar                                      1783    1696     -87

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-01-27 19:04:08 +01:00
Denys Vlasenko
9ac42c5005 unlzma: fix SEGV, closes 10436 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-10-27 15:37:03 +02:00
Denys Vlasenko
0402cb32df bunzip2: fix runCnt overflow from bug 10431 
This particular corrupted file can be dealth with by using "unsigned".
If there will be cases where it genuinely overflows, there is a disabled
code to deal with that too.

function                                             old     new   delta
get_next_block                                      1678    1667     -11

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-10-22 18:23:23 +02:00
Denys Vlasenko
2ab9403119 whitespace and comment format fixes, no code changes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-10-05 15:33:28 +02:00
Denys Vlasenko
ebe6d9d875 whitespace and comment format fixes, no code changes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-10-05 14:40:24 +02:00
Ron Yorston
e837a0dbbe libarchive: fix build failure on NOMMU systems 
In the old code fd was an argument, now we need to get the file descriptor
from the xstate structure.

Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-22 15:41:33 +02:00
Denys Vlasenko
bc9bbeb2b8 libarchive: do not extract unsafe symlinks unless $EXTRACT_UNSAFE_SYMLINKS=1 
function                                             old     new   delta
unsafe_symlink_target                                  -     147    +147
unzip_main                                          2711    2732     +21
copy_file                                           1657    1678     +21
tar_main                                             999     971     -28
data_extract_all                                    1038     984     -54
------------------------------------------------------------------------------
(add/remove: 2/0 grow/shrink: 2/2 up/down: 189/-82)           Total: 107 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-10 11:52:42 +02:00
Denys Vlasenko
0cf64c8b5d rpm2cpio: handle LZMA compressed rpms. closes 10166 
function                                             old     new   delta
rpm2cpio_main                                         78     120     +42
setup_lzma_on_fd                                       -      29     +29
fork_transformer_and_free                              -      28     +28
...
setup_unzip_on_fd                                     56      32     -24
------------------------------------------------------------------------------
(add/remove: 2/0 grow/shrink: 3/5 up/down: 104/-67)            Total: 37 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-10 10:36:37 +02:00
Denys Vlasenko
76b65624b9 unxz: get_le32 macro is obviously wrong 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-07 20:56:54 +02:00
Denys Vlasenko
b920a38dc0 tar: postpone creation of symlinks with "suspicious" targets. Closes 8411 
function                                             old     new   delta
data_extract_all                                     968    1038     +70
tar_main                                             952     986     +34
scan_tree                                            258     262      +4
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/0 up/down: 108/0)             Total: 108 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-07-24 17:20:13 +02:00
Denys Vlasenko
2c1258c620 Move get_unaligned_le32() macros to platform.h 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-07-15 20:22:25 +02:00
Denys Vlasenko
10ad622dc2 Spelling fixes in comments, documentation, tests and examples 
By klemens <ka7@github.com>

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-04-17 16:13:32 +02:00