oweals/busybox.git
7 years agotls: set TLS_DEBUG to 0; placate a gcc indentation warning
Denys Vlasenko [Mon, 23 Jan 2017 00:15:13 +0000 (01:15 +0100)]
tls: set TLS_DEBUG to 0; placate a gcc indentation warning

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agoseparate TLS code into a library, use in in wget
Denys Vlasenko [Mon, 23 Jan 2017 00:08:16 +0000 (01:08 +0100)]
separate TLS code into a library, use in in wget

A new applet, ssl_client, is the TLS debug thing now.
It doubles as wget's NOMMU helper.
In MMU mode, wget still forks, but then directly calls TLS code,
without execing.

This can also be applied to sendmail/popmail (SMTPS / SMTP+starttls support)
and nc --ssl (ncat, nmap's nc clone, has such option).

function                                             old     new   delta
tls_handshake                                          -    1691   +1691
tls_run_copy_loop                                      -     443    +443
ssl_client_main                                        -     128    +128
packed_usage                                       30978   31007     +29
wget_main                                           2508    2535     +27
applet_names                                        2553    2560      +7
...
xwrite_encrypted                                     360     342     -18
tls_main                                            2127       -   -2127
------------------------------------------------------------------------------
(add/remove: 4/1 grow/shrink: 13/8 up/down: 2351/-2195)       Total: 156 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agols: -1 should be ignored by -l (and options which imply -l)
Denys Vlasenko [Sun, 22 Jan 2017 21:02:19 +0000 (22:02 +0100)]
ls: -1 should be ignored by -l (and options which imply -l)

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agols: more correct handling of -c, -u
Denys Vlasenko [Sun, 22 Jan 2017 18:02:57 +0000 (19:02 +0100)]
ls: more correct handling of -c, -u

function                                             old     new   delta
my_stat                                              302     318     +16
packed_usage                                       30977   30969      -8
display_single                                       928     910     -18
sortcmp                                              258     228     -30
ls_main                                              776     732     -44
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/4 up/down: 16/-100)           Total: -84 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agols: replace -e with --full-time, add --group-directories-first, delete -K
Denys Vlasenko [Sun, 22 Jan 2017 16:32:20 +0000 (17:32 +0100)]
ls: replace -e with --full-time, add --group-directories-first, delete -K

-K and -e were non-standard

function                                             old     new   delta
static.ls_longopts                                     9      47     +38
ls_main                                              748     776     +28
display_single                                       901     928     +27
sortcmp                                              254     258      +4
ls_options                                            32      31      -1
opt_flags                                            100      96      -4
packed_usage                                       31032   30977     -55
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 4/3 up/down: 97/-60)             Total: 37 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agoip: better --help
Denys Vlasenko [Sat, 21 Jan 2017 13:27:07 +0000 (14:27 +0100)]
ip: better --help

Was:
    Usage: ip [OPTIONS] address|route|link|tunnel|neigh|rule [COMMAND]

    ip [OPTIONS] OBJECT [COMMAND]
    where OBJECT := address|route|link|tunnel|neigh|rule
    OPTIONS := -f[amily] inet|inet6|link | -o[neline]

User: instead of repeating list of OBJECTs twice, you could at least
show available COMMANDs...

Now:
    Usage: ip [OPTIONS] address|route|link|tunnel|neigh|rule [COMMAND]

    OPTIONS := -f[amily] inet|inet6|link | -o[neline]
    COMMAND :=
    ip addr add|del IFADDR dev IFACE | show|flush [dev IFACE] [to PREFIX]
    ip route list|flush|add|del|change|append|replace|test ROUTE
    ip link set IFACE [up|down] [arp on|off] | show [IFACE]
    ip tunnel add|change|del|show [NAME]
        [mode ipip|gre|sit]
        [remote ADDR] [local ADDR] [ttl TTL]
    ip neigh show|flush [to PREFIX] [dev DEV] [nud STATE]
    ip rule [list] | add|del SELECTOR ACTION

While at it, tweak tc --help too (it stays disabled, thus no effect)

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agomore ip --help fixes
Denys Vlasenko [Sat, 21 Jan 2017 02:56:46 +0000 (03:56 +0100)]
more ip --help fixes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agomake --help texts smaller
Denys Vlasenko [Sat, 21 Jan 2017 02:46:35 +0000 (03:46 +0100)]
make --help texts smaller

function                                             old     new   delta
packed_usage                                       31035   30968     -67

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agomake --help texts more uniform
Denys Vlasenko [Sat, 21 Jan 2017 01:49:58 +0000 (02:49 +0100)]
make --help texts more uniform

function                                             old     new   delta
packed_usage                                       31062   31035     -27

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agotls: reorder tls_state fields for smaller offsets
Denys Vlasenko [Sat, 21 Jan 2017 01:07:59 +0000 (02:07 +0100)]
tls: reorder tls_state fields for smaller offsets

function                                             old     new   delta
xwrite_encrypted                                     363     360      -3
xwrite_and_update_handshake_hash                     117     114      -3
tls_xread_handshake_block                             72      69      -3
tls_error_die                                        211     202      -9
tls_get_outbuf                                        64      49     -15
tls_main                                            2163    2127     -36
tls_xread_record                                     702     639     -63
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/7 up/down: 0/-132)           Total: -132 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agotls: send SNI in the client hello
Denys Vlasenko [Fri, 20 Jan 2017 21:48:41 +0000 (22:48 +0100)]
tls: send SNI in the client hello

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agotls: check size on "MAC-only, no crypt" code path too
Denys Vlasenko [Fri, 20 Jan 2017 20:23:10 +0000 (21:23 +0100)]
tls: check size on "MAC-only, no crypt" code path too

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agotls: AES decrypt does one unnecessary memmove
Denys Vlasenko [Fri, 20 Jan 2017 20:19:38 +0000 (21:19 +0100)]
tls: AES decrypt does one unnecessary memmove

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agotls: make input buffer grow as needed
Denys Vlasenko [Fri, 20 Jan 2017 19:27:06 +0000 (20:27 +0100)]
tls: make input buffer grow as needed

As it turns out, it goes only up to "inbuf_size:4608"
for kernel.org - fixed 18kb buffer was x4 larger than necessary.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agopassword utils: improve --help, make DEFAULT_PASSWD_ALGO visible if CHPASSWD
Denys Vlasenko [Fri, 20 Jan 2017 18:47:49 +0000 (19:47 +0100)]
password utils: improve --help, make DEFAULT_PASSWD_ALGO visible if CHPASSWD

Was:
    $ cryptpw --help
    ...
    Print crypt(3) hashed PASSWORD

        -P,--password-fd=N Read password from fd N
        -m,--method=TYPE Encryption method
        -S,--salt=SALT

User: "What methods exist? which one os default?"

Now:
    Print crypt(3) hashed PASSWORD

        -P,--password-fd N Read password from fd N
        -m,--method TYPE des,md5,sha256/512 (default des)
        -S,--salt SALT

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agotls: improve i/o loop
Denys Vlasenko [Fri, 20 Jan 2017 18:11:14 +0000 (19:11 +0100)]
tls: improve i/o loop

With tls_has_buffered_record(), entire kernel.org response
is printed at once, without 6 second pause to see its delayed EOF.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agotls: was psAesDecrypt'ing one block too many, trashing buffered data
Denys Vlasenko [Fri, 20 Jan 2017 16:59:25 +0000 (17:59 +0100)]
tls: was psAesDecrypt'ing one block too many, trashing buffered data

For the first time

printf "GET / HTTP/1.1\r\nHost: kernel.org\r\n\r\n" | ./busybox tls kernel.org

successfully reads entire server response and TLS shutdown.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agordate: time(NULL) is shorter than time(&var)
Denys Vlasenko [Fri, 20 Jan 2017 15:07:14 +0000 (16:07 +0100)]
rdate: time(NULL) is shorter than time(&var)

function                                             old     new   delta
rdate_main                                           251     246      -5

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agordate: make it do something remotely sane, facing 32-bit time overflow
Denys Vlasenko [Fri, 20 Jan 2017 15:03:48 +0000 (16:03 +0100)]
rdate: make it do something remotely sane, facing 32-bit time overflow

function                                             old     new   delta
rdate_main                                           251     254      +3
packed_usage                                       31029   31023      -6

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agotls: do not use common_bufsiz
Denys Vlasenko [Fri, 20 Jan 2017 13:27:58 +0000 (14:27 +0100)]
tls: do not use common_bufsiz

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agotls: decode alerts and in particular, EOF alert.
Denys Vlasenko [Fri, 20 Jan 2017 13:12:10 +0000 (14:12 +0100)]
tls: decode alerts and in particular, EOF alert.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agotls: add the i/o loop - largish rework of i/o buffering
Denys Vlasenko [Fri, 20 Jan 2017 02:15:09 +0000 (03:15 +0100)]
tls: add the i/o loop - largish rework of i/o buffering

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agotls: fix ROL/ROR x86 optimization
Denys Vlasenko [Thu, 19 Jan 2017 15:45:41 +0000 (16:45 +0100)]
tls: fix ROL/ROR x86 optimization

ALWAYS_INLINE:

function                                             old     new   delta
psAesInitKey                                         825     824      -1
ROR                                                    5       -      -5
setup_mix2                                           148     134     -14
psAesDecryptBlock                                   1184    1139     -45
psAesEncryptBlock                                   1193    1102     -91
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 0/4 up/down: 0/-156)           Total: -156 bytes

ALWAYS_INLINE + __builtin_constant_p(shift_cnt):

function                                             old     new   delta
ROR                                                    5       -      -5
psAesInitKey                                         825     818      -7
setup_mix2                                           148     123     -25
psAesDecryptBlock                                   1184    1078    -106
psAesEncryptBlock                                   1193    1017    -176
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 0/4 up/down: 0/-319)           Total: -319 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agotls: tested PSTM_X86_64, not enabling it - too large
Denys Vlasenko [Thu, 19 Jan 2017 15:32:38 +0000 (16:32 +0100)]
tls: tested PSTM_X86_64, not enabling it - too large

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agotls: commented out psPool_t use
Denys Vlasenko [Thu, 19 Jan 2017 14:51:00 +0000 (15:51 +0100)]
tls: commented out psPool_t use

function                                             old     new   delta
psAesEncrypt                                         159     162      +3
der_binary_to_pstm                                    42      40      -2
xwrite_and_hash                                      437     434      -3
xread_tls_block                                      446     443      -3
pstm_div_2d                                          449     444      -5
psAesDecrypt                                         179     174      -5
pstm_init_size                                        52      45      -7
pstm_init                                             46      39      -7
pstm_to_unsigned_bin                                 165     157      -8
tls_main                                            1265    1256      -9
pstm_mulmod                                          132     123      -9
pstm_mod                                             125     116      -9
pstm_init_copy                                        93      84      -9
psAesInitKey                                         840     825     -15
send_client_key_exchange                             362     342     -20
psAesInit                                            103      80     -23
psRsaEncryptPub                                      429     403     -26
psAesDecryptBlock                                   1211    1184     -27
psAesEncryptBlock                                   1223    1193     -30
pstm_exptmod                                        1582    1524     -58
pstm_div                                            1557    1472     -85
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/20 up/down: 3/-360)          Total: -357 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agontpd: print result of hostname resolution
Denys Vlasenko [Thu, 19 Jan 2017 13:42:34 +0000 (14:42 +0100)]
ntpd: print result of hostname resolution

This is particularly useful if hostname resolution is triggered by
host non-reachability: I saw this in real-life, without the message
it is not at all obvious that IP that we use for a specific host
has changed.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agofdisk: add typical values of -H and -S to --help
Denys Vlasenko [Thu, 19 Jan 2017 13:29:42 +0000 (14:29 +0100)]
fdisk: add typical values of -H and -S to --help

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agotls: teach it to decrypt AES256-encrypted data
Denys Vlasenko [Wed, 18 Jan 2017 23:20:45 +0000 (00:20 +0100)]
tls: teach it to decrypt AES256-encrypted data

This adds decryption only.
There is no MAC verification, code simply throws away MAC.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agotls: trim comments
Denys Vlasenko [Wed, 18 Jan 2017 20:00:23 +0000 (21:00 +0100)]
tls: trim comments

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agotls: teach it to send AES256-encrypted data
Denys Vlasenko [Wed, 18 Jan 2017 19:37:24 +0000 (20:37 +0100)]
tls: teach it to send AES256-encrypted data

>> CLIENT_HELLO
wrote 50 bytes
insize:0 tail:0
got block len:74
got HANDSHAKE
<< SERVER_HELLO
insize:79 tail:0
got block len:2397
got HANDSHAKE
<< CERTIFICATE
key bytes:271, first:0x00
server_rsa_pub_key.size:256
insize:2402 tail:0
got block len:4
got HANDSHAKE
<< SERVER_HELLO_DONE
>> CLIENT_KEY_EXCHANGE
wrote 267 bytes
master secret:c51df5b1e3b3f57373cdd8ea28e8ce562059636cf9f585d0b89c7f4bacec97e674d7b91f93e7b500cb64637f240c3b78
client_write_MAC_key:3b0b7e2bab241b629c37eb3a3824f09b39fe71a00876b0c8026dda16ef0d2f82
client_write_key:d36e801470ed2f0a8fc886ac25df57ffbe4265d06e3192122c4ef4df1e32fab2
>> CHANGE_CIPHER_SPEC
from secret: c51df5b1e3b3f57373cdd8ea28e8ce562059636cf9f585d0b89c7f4bacec97e674d7b91f93e7b500cb64637f240c3b78
from labelSeed: 636c69656e742066696e6973686564b22e0e6008b8ee218cc02e4a93e4a42b570535f9b57662e262d43b379d125b69
=> digest: a45bfee8ed6507a2a9920d0c
>> FINISHED
before crypt: 5 hdr + 16 data + 32 hash bytes
writing 5 + 16 IV + 64 encrypted bytes, padding_length:0x0f
wrote 85 bytes
insize:9 tail:0
got block len:1
<< CHANGE_CIPHER_SPEC
insize:6 tail:0
got block len:80
< hdr_type:22 ver:3.3 len:80 type:21 len24:9541723 |1591985b...a3da|

The last line is the server's FINISHED response, encrypted.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agotls: added AES code and made it compile. not used yet
Denys Vlasenko [Wed, 18 Jan 2017 16:20:27 +0000 (17:20 +0100)]
tls: added AES code and made it compile. not used yet

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agotls: massage writing for encryption support; finer-grained debug
Denys Vlasenko [Wed, 18 Jan 2017 05:45:50 +0000 (06:45 +0100)]
tls: massage writing for encryption support; finer-grained debug

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agotls: address one easy FIXME, tidy up comments
Denys Vlasenko [Tue, 17 Jan 2017 17:17:27 +0000 (18:17 +0100)]
tls: address one easy FIXME, tidy up comments

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agotls: process CHANGE_CIPHER_SPEC and FINISHED from server
Denys Vlasenko [Tue, 17 Jan 2017 16:24:11 +0000 (17:24 +0100)]
tls: process CHANGE_CIPHER_SPEC and FINISHED from server

Successfully finishes handshake with test servers using NULL-SHA256
cipher.

The "only" thing remaining before there is a chance
this can actually work with real servers is AES encrypt/decrypt.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agotls: rearrange function order, improve comments
Denys Vlasenko [Tue, 17 Jan 2017 16:04:24 +0000 (17:04 +0100)]
tls: rearrange function order, improve comments

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agotls: make our send_client_finished() pass server check
Denys Vlasenko [Tue, 17 Jan 2017 15:53:36 +0000 (16:53 +0100)]
tls: make our send_client_finished() pass server check

sha256 hash should be calculated over incoming handshake packets too!

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agotls: format FINISHED message properly for unencrypted, but sha256 signed mode
Denys Vlasenko [Mon, 16 Jan 2017 22:26:33 +0000 (23:26 +0100)]
tls: format FINISHED message properly for unencrypted, but sha256 signed mode

Now it at least looks correct, but unfortunately "openssl s_server"
says my hash is wrong.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agoAssorted warning fixes and added a comment, no code changes
Denys Vlasenko [Mon, 16 Jan 2017 16:31:05 +0000 (17:31 +0100)]
Assorted warning fixes and added a comment, no code changes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agotls: add sha256 hmac and prf code
Denys Vlasenko [Mon, 16 Jan 2017 03:25:01 +0000 (04:25 +0100)]
tls: add sha256 hmac and prf code

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agocryptpw: support "rounds=NNNNNNN$" thing in salts
Denys Vlasenko [Sun, 15 Jan 2017 20:48:31 +0000 (21:48 +0100)]
cryptpw: support "rounds=NNNNNNN$" thing in salts

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agolibbb: eliminate redundant variable in sha_crypt
Denys Vlasenko [Sun, 15 Jan 2017 19:59:32 +0000 (20:59 +0100)]
libbb: eliminate redundant variable in sha_crypt

function                                             old     new   delta
sha_crypt                                           1136    1130      -6

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agosha512: use larger constant table only if sha512 is in fact selected
Denys Vlasenko [Sun, 15 Jan 2017 19:16:27 +0000 (20:16 +0100)]
sha512: use larger constant table only if sha512 is in fact selected

function                                             old     new   delta
sha_K                                                640     256    -384

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agotls: rearrange code, add/improve comments, fix whitespace, no real changes here
Denys Vlasenko [Sun, 15 Jan 2017 13:16:51 +0000 (14:16 +0100)]
tls: rearrange code, add/improve comments, fix whitespace, no real changes here

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agotls: send CHANGE_CIPHER_SPEC
Denys Vlasenko [Sun, 15 Jan 2017 01:17:03 +0000 (02:17 +0100)]
tls: send CHANGE_CIPHER_SPEC

To "actually implement it" will take more work...

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agowhitespace fix
Denys Vlasenko [Sat, 14 Jan 2017 23:18:22 +0000 (00:18 +0100)]
whitespace fix

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agotls: format and send CLIENT_KEY_EXCHANGE
Denys Vlasenko [Sat, 14 Jan 2017 23:12:42 +0000 (00:12 +0100)]
tls: format and send CLIENT_KEY_EXCHANGE

$ ./busybox tls kernel.org
insize:0 tail:0
got block len:74
got HANDSHAKE
got SERVER_HELLO
insize:79 tail:4265
got block len:4392
got HANDSHAKE
got CERTIFICATE
entered der @0x8b217a7:0x30 len:1452 inner_byte @0x8b217ab:0x30
entered der @0x8b217ab:0x30 len:1172 inner_byte @0x8b217af:0xa0
skipped der 0xa0, next byte 0x02
skipped der 0x02, next byte 0x30
skipped der 0x30, next byte 0x30
skipped der 0x30, next byte 0x30
skipped der 0x30, next byte 0x30
skipped der 0x30, next byte 0x30
entered der @0x8b218b4:0x30 len:418 inner_byte @0x8b218b8:0x30
skipped der 0x30, next byte 0x03
entered der @0x8b218c7:0x03 len:399 inner_byte @0x8b218cb:0x00
key bytes:399, first:0x00
entered der @0x8b218cc:0x30 len:394 inner_byte @0x8b218d0:0x02
binary bytes:385, first:0x00
skipped der 0x02, next byte 0x02
binary bytes:3, first:0x01
server_rsa_pub_key.size:384
insize:4397 tail:9
got block len:4
got SERVER_HELLO_DONE
insize:9 tail:0
^C

Next step: send CHANGE_CIPHER_SPEC... and actually implement it.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agotls: DER length byte 0x81 is actually valid
Denys Vlasenko [Sat, 14 Jan 2017 21:38:25 +0000 (22:38 +0100)]
tls: DER length byte 0x81 is actually valid

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agotls: a bit more work
Denys Vlasenko [Sat, 14 Jan 2017 12:57:16 +0000 (13:57 +0100)]
tls: a bit more work

$ ./busybox tls kernel.org
insize:0 tail:0
got block len:74
got HANDSHAKE
got SERVER_HELLO
insize:79 tail:4406
got block len:4392
got HANDSHAKE
got CERTIFICATE
entered der @0x8f7e723:0x30 len:1452 inner_byte @0x8f7e727:0x30
entered der @0x8f7e727:0x30 len:1172 inner_byte @0x8f7e72b:0xa0
skipped der 0xa0, next byte 0x02
skipped der 0x02, next byte 0x30
skipped der 0x30, next byte 0x30
skipped der 0x30, next byte 0x30
skipped der 0x30, next byte 0x30
skipped der 0x30, next byte 0x30
entered der @0x8f7e830:0x30 len:418 inner_byte @0x8f7e834:0x30
skipped der 0x30, next byte 0x03
entered der @0x8f7e843:0x03 len:399 inner_byte @0x8f7e847:0x00
copying key bytes:399, first:0x00
insize:4397 tail:9
got block len:4
got SERVER_HELLO_DONE

Now need to teach it to send ClientKeyExchange...

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agotls: work-in-progress TLS1.2 test applet
Denys Vlasenko [Sat, 14 Jan 2017 11:49:32 +0000 (12:49 +0100)]
tls: work-in-progress TLS1.2 test applet

function                                             old     new   delta
tls_main                                               -     733    +733
dump                                                   -     230    +230
xread_tls_block                                        -     180    +180
get_der_len                                            -      76     +76
enter_der_item                                         -      70     +70
skip_der_item                                          -      56     +56
get24be                                                -      24     +24
tls_error_die                                          -      19     +19
packed_usage                                       31010   31027     +17
applet_names                                        2549    2553      +4
applet_main                                         1472    1476      +4
applet_suid                                           92      93      +1
applet_install_loc                                   184     185      +1
------------------------------------------------------------------------------
(add/remove: 9/0 grow/shrink: 5/0 up/down: 1415/0)           Total: 1415 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agowget: fix for brain-damaged HTTP servers. Closes 9471
Denys Vlasenko [Wed, 11 Jan 2017 19:16:45 +0000 (20:16 +0100)]
wget: fix for brain-damaged HTTP servers. Closes 9471

write(3, "GET / HTTP/1.1\r\nUser-Agent: Wget\r\nConnection: close\r\n\r\n", 74) = 74
shutdown(3, SHUT_WR)    = 0
alarm(900)              = 900
read(3, "", 1024)       = 0
write(2, "wget: error getting response\n", 29) = 29
exit(1)

The peer simply does not return anything. It closes its connection.

Probably it detects wget closing its writing end: shutdown(3, SHUT_WR).

The point it, closing write side of the socket is _valid_ for HTTP.
wget sent the full request, it won't be sending anything more:
it will only receive the response, and that's it.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agoash: commented-out possible fix for 7694
Denys Vlasenko [Wed, 11 Jan 2017 18:59:03 +0000 (19:59 +0100)]
ash: commented-out possible fix for 7694

bash has a feature: it restores termios after a successful wait for
a foreground job which had at least one stopped or sigkilled member.
The probable rationale is that SIGSTOP and SIGKILL can preclude task from
properly restoring tty state. Should we do this too?
A reproducer: ^Z an interactive python:

$ python
Python 2.7.12 (...)
>>> ^Z
    { python leaves tty in -icanon -echo state. We do survive that... }
 [1]+  Stopped                    python
    { ...however, next program (python no.2) does not survive it well: }
$ python
Python 2.7.12 (...)
>>> Traceback (most recent call last):
    { above, I typed "qwerty<CR>", but -echo state is still in effect }
  File "<stdin>", line 1, in <module>
NameError: name 'qwerty' is not defined

The implementation is modeled on bash code and seems to work.
However, I'm not sure we should do this. For one: what if I'd fg
the stopped python instead? It'll be confused by "restored" tty state.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agoash: 16-bit ->nprocs field is a pain for many CPUs
Denys Vlasenko [Wed, 11 Jan 2017 17:44:15 +0000 (18:44 +0100)]
ash: 16-bit ->nprocs field is a pain for many CPUs

function                                             old     new   delta
getoptscmd                                           527     540     +13
getjob                                               280     286      +6
makejob                                              278     282      +4
forkchild                                            602     600      -2
waitcmd                                              208     205      -3
showjob                                              382     379      -3
getstatus                                             83      80      -3
dowait                                               408     405      -3
freejob                                               93      89      -4
fg_bgcmd                                             290     286      -4
forkshell                                            260     255      -5
killcmd                                              224     218      -6
jobno                                                 17      11      -6
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/10 up/down: 23/-39)           Total: -16 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agoMove FEATURE_AUTOWIDTH config option to two applets which use it
Denys Vlasenko [Wed, 11 Jan 2017 15:35:52 +0000 (16:35 +0100)]
Move FEATURE_AUTOWIDTH config option to two applets which use it

No code changes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agoMove FEATURE_USE_TERMIOS config option to two applets which use it
Denys Vlasenko [Wed, 11 Jan 2017 15:27:12 +0000 (16:27 +0100)]
Move FEATURE_USE_TERMIOS config option to two applets which use it

No code changes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agolibbb: consolidate the code to set termios unbuffered mode
Denys Vlasenko [Wed, 11 Jan 2017 15:17:59 +0000 (16:17 +0100)]
libbb: consolidate the code to set termios unbuffered mode

function                                             old     new   delta
set_termios_to_raw                                     -     116    +116
count_lines                                           72      74      +2
powertop_main                                       1458    1430     -28
top_main                                             943     914     -29
more_main                                            759     714     -45
fsck_minix_main                                     2969    2921     -48
conspy_main                                         1197    1135     -62
rawmode                                               99      36     -63
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 1/6 up/down: 118/-275)         Total: -157 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agohush: reinstate [[ builtin
Denys Vlasenko [Wed, 11 Jan 2017 13:22:00 +0000 (14:22 +0100)]
hush: reinstate [[ builtin

Mike deleted it:

    commit 39456a18a104b228de240b265bd943251219849d
    Author: Mike Frysinger <vapier@gentoo.org>
    Date:   Sat Mar 28 12:21:57 2009 +0000

    stop lying about [[ test support

probably because it was not properly ifdefed around, and was enabled
even when bash compat is off.

I just tested it - it works:

$ [ *.diff = z.diff ]; echo $?
0
$ [[ *.diff = z.diff ]]; echo $?
1

Of course, not all numerous bash tricks of [[ ]] are implemented...

function                                             old     new   delta
bltins2                                               60      72     +12

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agohush: split bash compatible extensions into separate defines. No code changes
Kang-Che Sung [Wed, 11 Jan 2017 13:18:15 +0000 (14:18 +0100)]
hush: split bash compatible extensions into separate defines. No code changes

Splitting these options makes it self-documenting about what
bash-compatible features we have.

Signed-off-by: Kang-Che Sung <explorer09@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agoash: split bash compatible extensions into separate defines. No code changes
Denys Vlasenko [Wed, 11 Jan 2017 13:00:38 +0000 (14:00 +0100)]
ash: split bash compatible extensions into separate defines. No code changes

Splitting these options makes it self-documenting about what
bash-compatible features we have.

Signed-off-by: Kang-Che Sung <explorer09@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agobusybox: stop depending on FEATURE_AUTOWIDTH for applet list
Denys Vlasenko [Wed, 11 Jan 2017 09:52:24 +0000 (10:52 +0100)]
busybox: stop depending on FEATURE_AUTOWIDTH for applet list

Many other appletw don't - they unconditionally use get_terminal_wodth(),
and here the amount of code saved by FEATURE_AUTOWIDTH=n is tiny.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agotop: FEATURE_USE_TERMIOS shouldn't control reading of screen size
Denys Vlasenko [Wed, 11 Jan 2017 09:50:08 +0000 (10:50 +0100)]
top: FEATURE_USE_TERMIOS shouldn't control reading of screen size

It controls whether we take input.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agomore: hardcode FEATURE_USE_TERMIOS=y in this applet; code shrink
Denys Vlasenko [Wed, 11 Jan 2017 09:38:52 +0000 (10:38 +0100)]
more: hardcode FEATURE_USE_TERMIOS=y in this applet; code shrink

function                                             old     new   delta
get_wh                                                 -      27     +27
tcsetattr_tty_TCSANOW                                  -      18     +18
gotsig                                                35      27      -8
more_main                                            835     759     -76
------------------------------------------------------------------------------
(add/remove: 2/0 grow/shrink: 0/2 up/down: 45/-84)            Total: -39 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agohush: shorten output of "help" builtin
Denys Vlasenko [Tue, 10 Jan 2017 15:51:10 +0000 (16:51 +0100)]
hush: shorten output of "help" builtin

   text    data     bss     dec     hex filename
 891272     485    6856  898613   db635 busybox_old
 891232     485    6856  898573   db60d busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agohush: reorder builtins (cd and pwd ought to be close, etc), no code changes
Denys Vlasenko [Tue, 10 Jan 2017 14:58:02 +0000 (15:58 +0100)]
hush: reorder builtins (cd and pwd ought to be close, etc), no code changes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agoinit: rename FEATURE_EXTRA_QUIET -> FEATURE_INIT_QUIET
Denys Vlasenko [Tue, 10 Jan 2017 14:24:13 +0000 (15:24 +0100)]
init: rename FEATURE_EXTRA_QUIET -> FEATURE_INIT_QUIET

The former name had no INIT anywhere in its name, sounded generic

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agoash: revert "make dot command search current directory first"
Denys Vlasenko [Tue, 10 Jan 2017 14:18:38 +0000 (15:18 +0100)]
ash: revert "make dot command search current directory first"

Reverts this:
    commit 8ad78e1ec7b2e873953f9f476fb63b5893526c39
    Author: Denis Vlasenko <vda.linux@googlemail.com>
    Date:   Sun Feb 15 12:40:30 2009 +0000
    ash: make dot command search current directory first, as bash does.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agoshells: make hush test optional, rename ASH_BUILTIN_foo -> ASH_foo
Denys Vlasenko [Tue, 10 Jan 2017 14:13:30 +0000 (15:13 +0100)]
shells: make hush test optional, rename ASH_BUILTIN_foo -> ASH_foo

This makes hash and ash more symmetrical wrt config menu and config
options.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agoBig cleanup in config help and description
Denys Vlasenko [Tue, 10 Jan 2017 13:58:54 +0000 (14:58 +0100)]
Big cleanup in config help and description

Redundant help texts (one which only repeats the description)
are deleted.

Descriptions and help texts are trimmed.

Some config options are moved, even across menus.

No config option _names_ are changed.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agoAllow FAST_FUNC to be overridden at build time
Kang-Che Sung [Thu, 5 Jan 2017 01:25:03 +0000 (09:25 +0800)]
Allow FAST_FUNC to be overridden at build time

Busybox uses FAST_FUNC macro to tweak with IA-32 calling conventions in
order to make the function call slightly smaller or slightly faster.
However, when I experiment with GCC's LTO (Link Time Optimization), I
discovered that FAST_FUNC could hinder LTO's optimization so that the
resulting executable become a few bytes larger (than what is compiled
without FAST_FUNC).

This change allows to specify e.g.
CONFIG_EXTRA_CFLAGS="-DFAST_FUNC= -flto"
and compile with LTO without a source code hack.

Signed-off-by: Kang-Che Sung <explorer09@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agokill: optimizations for single-applet build
Kang-Che Sung [Mon, 9 Jan 2017 17:46:58 +0000 (18:46 +0100)]
kill: optimizations for single-applet build

* Fix a bug with a configuration in which the shell's kill builtin
  would be mistreated as a killall command (i.e. '-q' works, and
  'kill process_name' succeeds when it shouldn't):

    CONFIG_ASH_JOB_CONTROL=y
    CONFIG_HUSH_KILL=y
    # CONFIG_KILL is not set
    CONFIG_KILLALL=y
    # CONFIG_KILLALL5 is not set

* Optimize out unneeded code when the relevant applets are not
  selected.

* Move kbuild lines about shells' kill builtins from Kbuild.src to
  kill.c, to accompany the new HAVE_SH_KILL macro. I hope this would
  make maintanence a little bit easier.

Signed-off-by: Kang-Che Sung <explorer09@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agohush: make echo builtin optional
Denys Vlasenko [Mon, 9 Jan 2017 16:10:04 +0000 (17:10 +0100)]
hush: make echo builtin optional

It's a bit overkill (who would want it off?) but ash already has it
configurable. Let's be symmetric.

Also tweak kbuild logic to use ASH_BUILTIN_ECHO to select echo.o,
not ASH.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agokill: need not build kill.c when ash's job control is off
Kang-Che Sung [Mon, 9 Jan 2017 16:02:51 +0000 (17:02 +0100)]
kill: need not build kill.c when ash's job control is off

ash kill builtin depends on the job control config option.

Signed-off-by: Kang-Che Sung <explorer09@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agomake_single_applets.sh: show errors and warnings
Denys Vlasenko [Mon, 9 Jan 2017 15:31:21 +0000 (16:31 +0100)]
make_single_applets.sh: show errors and warnings

While at it, fix one warning in modprobe-small.c

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agounlzma: expand comments, no code changes
Denys Vlasenko [Mon, 9 Jan 2017 13:28:25 +0000 (14:28 +0100)]
unlzma: expand comments, no code changes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agounlzma: fix erroneous "while" instead of "if". Closes 4682
Denys Vlasenko [Mon, 9 Jan 2017 12:55:11 +0000 (13:55 +0100)]
unlzma: fix erroneous "while" instead of "if". Closes 4682

These parts of the code essentially check whether
stepping back by rep0 goes negative or not.

LZMA SDK from lzma1604.7z has the following in the corresponding places:

... = dic[dicPos - rep0 + (dicPos < rep0 ? dicBufSize : 0)]

Clearly, not loop here.

Technically, "while" here works: if condition is false (because pos
underflowed), it iterates once, adds header.dict_size (a.k.a. dicBufSize),
this makes pos positive but smaller than header.dict_size, and loop exits.

Now we'll just check for negative result of subtraction, which is less code:

function                                             old     new   delta
unpack_lzma_stream                                  2659    2641     -18

(I hope 2 Gbyte+ dictionaries won't be in use soon).

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agounzip: match "Defl:?" display with info-zip; cosmetic code shuffling
Denys Vlasenko [Mon, 9 Jan 2017 12:10:10 +0000 (13:10 +0100)]
unzip: match "Defl:?" display with info-zip; cosmetic code shuffling

Large nested indented code blocks made more sane with a few gotos.

function                                             old     new   delta
unzip_main                                          2491    2519     +28

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agounzip: optional support for xz
Denys Vlasenko [Mon, 9 Jan 2017 10:12:01 +0000 (11:12 +0100)]
unzip: optional support for xz

function                                             old     new   delta
unzip_main                                          2476    2491     +15

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agounzip: optional support for bzip2 and lzma
Denys Vlasenko [Mon, 9 Jan 2017 09:58:37 +0000 (10:58 +0100)]
unzip: optional support for bzip2 and lzma

function                                             old     new   delta
unzip_main                                          2376    2476    +100
bbunpack                                             750     745      -5

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agomodprobe-small: build fixes
Denys Vlasenko [Mon, 9 Jan 2017 08:48:58 +0000 (09:48 +0100)]
modprobe-small: build fixes

Was throwing some build errors:

CONFIG_MODPROBE_SMALL=y
CONFIG_DEPMOD=y
CONFIG_LSMOD=y
CONFIG_MODINFO=y
CONFIG_FEATURE_MODPROBE_SMALL_CHECK_ALREADY_LOADED=y

error: unused variable 'exitcode'

modutils/modprobe-small.c: In function 'modprobe_main':
modutils/modprobe-small.c:1060: error: control reaches end of non-void function

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agomodprobe-small: optimizations for single applet build
Explorer09 [Mon, 9 Jan 2017 07:04:43 +0000 (15:04 +0800)]
modprobe-small: optimizations for single applet build

(I'm requesting for a review first because I fear such an aggressive
change could lead to bugs. While I observe the sizes have reduced, I
haven't test the functionality of each applet after that. So please
test before merging.)

Aggressively cut off unneeded code when the relevant applets are not
built.

Correct dependencies of FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE and
FEATURE_MODPROBE_SMALL_CHECK_ALREADY_LOADED.

Don't bother with the '-r' option check if only rmmod is built (assume
true then), or when neither rmmod or mobprobe is built (assume false
then).

Size comparison before and after the change (single applet
configuration):

     text    data     bss     dec     hex filename
    34778     946     112   35836    8bfc old/busybox_DEPMOD
    34151     946     112   35209    8989 new/busybox_DEPMOD

    34903     946     112   35961    8c79 old/busybox_INSMOD
    28316     778     112   29206    7216 new/busybox_INSMOD

    35228     962     112   36302    8dce old/busybox_LSMOD
     5011     706      40    5757    167d new/busybox_LSMOD

    34830     946     112   35888    8c30 old/busybox_MODPROBE
    34795     946     112   35853    8c0d new/busybox_MODPROBE

    34718     946     112   35776    8bc0 old/busybox_RMMOD
     7502     714     104    8320    2080 new/busybox_RMMOD

Signed-off-by: Kang-Che Sung <explorer09@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agoAllow 'gzip -d' and 'bzip2 -d' without gunzip or bunzip2
Kang-Che Sung [Sun, 8 Jan 2017 06:28:34 +0000 (14:28 +0800)]
Allow 'gzip -d' and 'bzip2 -d' without gunzip or bunzip2

Idea copied from the "ip" applet.

Signed-off-by: Kang-Che Sung <explorer09@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agoash: fix a bug in argv restoration after sourcing a file
Denys Vlasenko [Mon, 9 Jan 2017 07:22:06 +0000 (08:22 +0100)]
ash: fix a bug in argv restoration after sourcing a file

if sourced file "shift"ed argvs so that $1 is NULL, restore wasn't done.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agohush: fix a bug in argv restoration after sourcing a file
Denys Vlasenko [Mon, 9 Jan 2017 07:13:21 +0000 (08:13 +0100)]
hush: fix a bug in argv restoration after sourcing a file

if sourced file "shift"ed argvs so that $1 is NULL, restore wasn't done.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agohush: global_args_malloced is used only if set builtin is enabled
Denys Vlasenko [Mon, 9 Jan 2017 06:57:38 +0000 (07:57 +0100)]
hush: global_args_malloced is used only if set builtin is enabled

function                                             old     new   delta
run_pipe                                            1623    1635     +12
builtin_source                                       210     222     +12
save_and_replace_G_args                               70      60     -10
builtin_shift                                        132      94     -38
restore_G_args                                        98       -     -98
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 2/2 up/down: 24/-146)          Total: -122 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agohush: fix 'defined but not used' warning
Denys Vlasenko [Mon, 9 Jan 2017 05:19:55 +0000 (06:19 +0100)]
hush: fix 'defined but not used' warning

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agohush: remove redundand test for ENABLE_HUSH_JOB
Denys Vlasenko [Mon, 9 Jan 2017 04:57:13 +0000 (05:57 +0100)]
hush: remove redundand test for ENABLE_HUSH_JOB

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agohush: fix kill builtin without jobs support
Denys Vlasenko [Mon, 9 Jan 2017 04:47:57 +0000 (05:47 +0100)]
hush: fix kill builtin without jobs support

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agotypo fix
Denys Vlasenko [Mon, 9 Jan 2017 04:11:09 +0000 (05:11 +0100)]
typo fix

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agohush: conditionalize print_escaped() on EXPORT || TRAP
Denys Vlasenko [Sun, 8 Jan 2017 17:56:24 +0000 (18:56 +0100)]
hush: conditionalize print_escaped() on EXPORT || TRAP

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agohush: make memleak builtin optional
Denys Vlasenko [Sun, 8 Jan 2017 17:44:41 +0000 (18:44 +0100)]
hush: make memleak builtin optional

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agohush: make export builtin optional
Denys Vlasenko [Sun, 8 Jan 2017 17:40:41 +0000 (18:40 +0100)]
hush: make export builtin optional

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agohush: make umask builtin optional
Denys Vlasenko [Sun, 8 Jan 2017 17:31:39 +0000 (18:31 +0100)]
hush: make umask builtin optional

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agohush: make set/unset builtins optional
Denys Vlasenko [Sun, 8 Jan 2017 17:28:43 +0000 (18:28 +0100)]
hush: make set/unset builtins optional

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agohush: make read and trap builtins optional
Denys Vlasenko [Sun, 8 Jan 2017 16:40:18 +0000 (17:40 +0100)]
hush: make read and trap builtins optional

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agohush: kill builtin and kill %jobspec support
Denys Vlasenko [Sun, 8 Jan 2017 16:19:38 +0000 (17:19 +0100)]
hush: kill builtin and kill %jobspec support

Also made it and printf, type and wait builtins optional.

function                                             old     new   delta
builtin_kill                                           -     323    +323
bltins1                                              336     348     +12
builtin_type                                         114     116      +2
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 2/0 up/down: 337/0)             Total: 337 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agohush: support %%, %+ and % jobspec (meaning "current job")
Denys Vlasenko [Sun, 8 Jan 2017 14:46:04 +0000 (15:46 +0100)]
hush: support %%, %+ and % jobspec (meaning "current job")

function                                             old     new   delta
parse_jobspec                                         83     133     +50
builtin_wait                                         278     283      +5

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agohttpd: fix address family for reverse proxy client socket
Laurent Bercot [Fri, 6 Jan 2017 21:03:08 +0000 (22:03 +0100)]
httpd: fix address family for reverse proxy client socket

When httpd proxies a request to another server, it first creates
an AF_INET socket, then resolves the server name to a sockaddr,
then connects to it. This fails if the server name resolves to
an IPv6 address.

This patch ensures that the socket is created with the correct
address family (AF_INET6 if the server resolves to an IPv6 address
and AF_INET otherwise).

Signed-off-by: Laurent Bercot <ska-dietlibc@skarnet.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agobuild system: no longer prompt for PLATFORM_LINUX option
Kang-Che Sung [Sat, 7 Jan 2017 07:16:46 +0000 (15:16 +0800)]
build system: no longer prompt for PLATFORM_LINUX option

With the new "select PLATFORM_LINUX" mechanism
(commit e3b1a1fd28558f7a1b3c0ec33313bedb675be8a1), the PLATFORM_LINUX
option alone no longer has any purpose of changing program behavior or
affecting compiled code. So there is no longer need to prompt user of
this config question.

Signed-off-by: Kang-Che Sung <explorer09@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agobunzip2: fix code bloat caused by zcat's seamless magic
Kang-Che Sung [Sun, 8 Jan 2017 13:31:06 +0000 (14:31 +0100)]
bunzip2: fix code bloat caused by zcat's seamless magic

This example single-applet configuration would trigger the bloat:

    CONFIG_FEATURE_SEAMLESS_XZ=y
    CONFIG_FEATURE_SEAMLESS_LZMA=y
    CONFIG_FEATURE_SEAMLESS_BZ2=y
    CONFIG_FEATURE_SEAMLESS_GZ=y
    CONFIG_BUNZIP2=y
    # CONFIG_ZCAT is not set
    # All other applets disabled

Here, the resulting "busybox-bunzip2" binary would contain
unpack_gz_stream, unpack_lzma_stream and unpack_xz_stream functions
code. In other words, the gzip, lzma and xz decompressors' code are
linked into the binary unnecessarily.

This happens because SEAMLESS_MAGIC != 0 and compiler is unable
to figure out that SEAMLESS_MAGIC bit is never set.

Fix this by disabling SEAMLESS_MAGIC option flag (setting its value
to 0) when zcat is disabled. This will help the compiler optimize out
bbunpack() and no longer generate open_zipped() function call.

Signed-off-by: Kang-Che Sung <explorer09@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agoash: fix "kill %1" not working if CONFIG_ASH is disabled
Kang-Che Sung [Sun, 8 Jan 2017 13:27:34 +0000 (14:27 +0100)]
ash: fix "kill %1" not working if CONFIG_ASH is disabled

ix ash "kill %1" not working if CONFIG_ASH is disabled but
ash is launched by 'sh' or 'bash' name

Signed-off-by: Kang-Che Sung <explorer09@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
7 years agounzip: do not use CDF.extra_len, read local file header. Closes 9536
Denys Vlasenko [Sun, 8 Jan 2017 13:14:19 +0000 (14:14 +0100)]
unzip: do not use CDF.extra_len, read local file header. Closes 9536

While at it, shorten many field and variable names.

function                                             old     new   delta
unzip_main                                          2334    2376     +42

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>