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509 Commits

Author SHA1 Message Date
Denys Vlasenko
7b8372b819 add/remove-shell,add/deluser,add/delgroup: make them NOEXEC 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-07 00:28:15 +02:00
Denys Vlasenko
feb79e8742 cryptpw, mkpasswd: make them NOEXEC 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-05 02:08:23 +02:00
Denys Vlasenko
b182e9ad60 libbb: use _exit, not exit, in bb_daemonize_or_rexec() 
By the time we reach exit in parent, child already exited or execed.
We should not re-run libc cleanup code.

While at it, introduce bb_daemon_helper() and add a few comments.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-04 23:04:17 +02:00
Denys Vlasenko
5c527dc57e make 17 state-changing execing applets (ex: "nice PROG ARGS") noexec 
The applets with "<applet> [opts] PROG ARGS" API very quickly exec
another program, noexec is okay for them:

 chpst/envdir/envuidgid/softlimit/setuidgid
 chroot
 chrt
 ionice
 nice
 nohup
 setarch/linux32/linux64
 taskset
 cttyhack

"reset" and "sulogin" applets don't have this form, but also exec
another program at once, thus made noexec too.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-04 19:55:01 +02:00
Denys Vlasenko
68b653b66b config: trim/improve item names and help texts, take 2 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-07-27 10:53:09 +02:00
Denys Vlasenko
72089cf6b4 config: deindent all help texts 
Those two spaces after tab have no effect, and always a nuisance when editing.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-07-21 09:50:55 +02:00
Denys Vlasenko
4eed2c6c50 Update menuconfig items with approximate applet sizes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-07-18 22:01:24 +02:00
Timo Teräs
cc86b2ad96 add-remove-shell: fix crash when shell is already added 
Avoid dereferencing 'don_add' in strcmp since it is invalid
pointer.

Signed-off-by: Timo Teräs <timo.teras@iki.fi>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-07-14 09:59:52 +02:00
Denys Vlasenko
13d72c3fd9 add/remove-shell: copy /etc/shells mode to new file 
function                                             old     new   delta
add_remove_shell_main                                259     300     +41

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-05-26 16:45:28 +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
Denys Vlasenko
933dcf1c8a fix "loginutils/Config.in:319 error: Overlong line" 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-04-13 13:37:05 +02:00
Denys Vlasenko
a3de0b3b86 libbb: make check_password() also return CHECKPASS_PW_HAS_EMPTY_PASSWORD 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-04-13 13:04:05 +02:00
Denys Vlasenko
335681ca8e su: FEATURE_SU_BLANK_PW_NEEDS_SECURE_TTY 
When this feature is enabled, blank passwords are not accepted by su
unless the user is on a secure TTY defined in /etc/securetty. This
resembles the default PAM configuration of some Linux distros which
specify the nullok_secure option for pam_unix.so.

Based on patch by Kaarle Ritvanen <kaarle.ritvanen@datakunkku.fi>

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-04-13 12:57:04 +02:00
Kaarle Ritvanen
517a82c5b6 login: move check_securetty to libbb 
Signed-off-by: Kaarle Ritvanen <kaarle.ritvanen@datakunkku.fi>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-04-13 12:39:03 +02:00
Denys Vlasenko
205d48e948 *: add comment about APPLET_ODDNAME format 
It confused me more than once

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-01-29 14:57:33 +01:00
Denys Vlasenko
4d417709b0 adduser: help for -G GRP is misleading, fix it 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-01-26 18:54:12 +01:00
Denys Vlasenko
9731ca7611 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>
 2017-01-20 19:47:49 +01:00
Denys Vlasenko
6c73aaff38 cryptpw: support "rounds=NNNNNNN$" thing in salts 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-01-15 21:48:31 +01:00
Denys Vlasenko
01ccdd1d3c 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>
 2017-01-11 16:17:59 +01:00
Denys Vlasenko
f560422fa0 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>
 2017-01-10 14:58:54 +01:00
Denys Vlasenko
4ea0ebdd42 Selinux complains about deprecated selinux/flask.h, stop including it 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-12-23 13:52:13 +01:00
Denys Vlasenko
1d3a04a3a4 Code style fixes, no code changes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-11-28 01:22:57 +01:00
Denys Vlasenko
834aba3b72 comment and readme updates 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-11-04 14:13:58 +01:00
Denys Vlasenko
79e2598c48 su: expand help; simplify passing of -c CMD to run_shell() 
Also, added a comment about bug 9401 (TIOCSTI input injection).

function                                             old     new   delta
packed_usage                                       30909   30932     +23
su_main                                              470     487     +17
sulogin_main                                         260     258      -2
run_applet_and_exit                                  681     678      -3
run_shell                                            166     126     -40

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-11-03 22:13:08 +01:00
Denys Vlasenko
237bedd499 getopt32: add new syntax of 'o:+' and 'o:*' for -o NUM and -o LIST 
In many cases, this aqllows to drop use of opt_complementary.
Approximately -400 bytes:

function                                             old     new   delta
getopt32                                            1423    1502     +79
opt_string                                            17      18      +1
OPT_STR                                               24      25      +1
uniq_main                                            416     406     -10
timeout_main                                         279     269     -10
sulogin_main                                         270     260     -10
readprofile_main                                    1825    1815     -10
ps_main                                              543     533     -10
pidof_main                                           245     235     -10
pgrep_main                                           611     601     -10
od_main                                             2600    2590     -10
mkfs_minix_main                                     2684    2674     -10
mkfs_ext2_main                                      2603    2593     -10
microcom_main                                        712     702     -10
makemime_main                                        315     305     -10
ionice_main                                          282     272     -10
inetd_main                                          2074    2064     -10
ifplugd_main                                        1144    1134     -10
halt_main                                            353     343     -10
getopt_main                                          636     626     -10
fdisk_main                                          2854    2844     -10
env_main                                             206     196     -10
dmesg_main                                           319     309     -10
conspy_main                                         1214    1204     -10
awk_main                                             981     971     -10
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/22 up/down: 81/-220)         Total: -139 bytes
   text	   data	    bss	    dec	    hex	filename
 919373	    906	  14060	 934339	  e41c3	busybox_old
 918969	    906	  14060	 933935	  e402f	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-07-06 21:58:02 +02:00
Denys Vlasenko
47cfbf32fd *: add most of the required setup_common_bufsiz() calls 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-04-21 18:18:48 +02:00
Denys Vlasenko
e6a2f4cc5a libbb: make bb_common_bufsiz1 1 kbyte, add capability to use bss tail for it 
The config item is FEATURE_USE_BSS_TAIL. When it is off (default):

function                                             old     new   delta
read_config                                          210     228     +18
doCommands                                          2279    2294     +15
ipneigh_list_or_flush                                763     772      +9
ipaddr_list_or_flush                                1256    1261      +5
display_process_list                                1301    1306      +5
conspy_main                                         1378    1383      +5
do_lzo_compress                                      352     355      +3
do_lzo_decompress                                    565     567      +2
push                                                  46      44      -2
inetd_main                                          2136    2134      -2
uevent_main                                          421     418      -3
addLines                                              97      92      -5
bb_common_bufsiz1                                   8193    1024   -7169
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 8/5 up/down: 62/-7181)        Total: -7119 bytes
   text	   data	    bss	    dec	    hex	filename
 829850	   4086	   9080	 843016	  cdd08	busybox_old
 829901	   4086	   1904	 835891	  cc133	busybox_unstripped

FEATURE_USE_BSS_TAIL=y:

read_config                                          210     228     +18
doCommands                                          2279    2294     +15
ipneigh_list_or_flush                                763     772      +9
ipaddr_list_or_flush                                1256    1261      +5
display_process_list                                1301    1306      +5
conspy_main                                         1378    1383      +5
do_lzo_compress                                      352     355      +3
do_lzo_decompress                                    565     567      +2
inetd_main                                          2136    2134      -2
bb_common_bufsiz1                                   8193       -   -8193
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 8/1 up/down: 62/-8195)        Total: -8133 bytes
   text	   data	    bss	    dec	    hex	filename
 829850	   4086	   9080	 843016	  cdd08	busybox_old
 829911	   4086	    880	 834877	  cbd3d	busybox_unstripped

FIXME: setup_common_bufsiz() calls are missing.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-04-21 17:39:11 +02:00
Denys Vlasenko
a27dc33f97 make MKPASSWD a separate config option, not an automatic alias to cryptpw 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-03-31 00:32:39 +02:00
Denys Vlasenko
2a17fbe88a sulogin: use bb_error_msg instead of bb_info_msg; better message 
Historic "System Maintenance Mode" message is a tiny bit cryptic.
Let's say explicitly what we are doing: we are giving user a shell
(presumably to do some maintenance in single-user mode).

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-03-30 17:36:20 +02:00
Denys Vlasenko
32c08acba3 sulogin: remove suid paranoia code, explain why it's not necessary 
function                                             old     new   delta
sulogin_main                                         325     270     -55

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-03-30 17:27:32 +02:00
Denys Vlasenko
8ac6effb02 sulogin: Dorp incorrect comment about suid-ness 
Sulogin is not a suid app, should fail if run by non-root.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-03-30 16:50:19 +02:00
Denys Vlasenko
066e76befe Replace a few more bb_info_msg's by bb_error_msg or printf 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-03-30 16:20:28 +02:00
Denys Vlasenko
bae8f98633 login: add commented-out PAM double password avoidance from BZ 4003 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-01-03 22:43:40 +01:00
Pascal Bach
2c0d3f5fd0 chpasswd: support -c argument and respect DEFAULT_PASSWD_ALGO 
Signed-off-by: Pascal Bach <pascal.bach@siemens.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2015-12-18 19:01:14 +01:00
Denys Vlasenko
c47917865d login: explain -h HOST option better 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2015-10-21 16:06:40 +02:00
Denys Vlasenko
95dee81a46 loginutils/*: convert to new-style "one file" applets 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2015-10-19 01:20:36 +02:00
Denys Vlasenko
550bf5b4a4 remove global "jmp_buf die_jmp" from !FEATURE_PREFER_APPLETS builds 
function                                             old     new   delta
xfunc_has_died                                         -      21     +21
sleep_much                                             -      12     +12
sleep10                                                -       9      +9
die_func                                               -       4      +4
fflush_stdout_and_exit                                35      36      +1
builtin_type                                         121     119      -2
die_sleep                                              4       -      -4
xfunc_die                                             60      24     -36
hush_main                                           1128    1011    -117
die_jmp                                              156       -    -156
------------------------------------------------------------------------------
(add/remove: 4/2 grow/shrink: 1/3 up/down: 47/-315)          Total: -268 bytes
   text	   data	    bss	    dec	    hex	filename
 939992	    992	  17652	 958636	  ea0ac	busybox_old
 939880	    992	  17496	 958368	  e9fa0	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2015-10-09 16:42:57 +02:00
Denys Vlasenko
d60752f8c9 build system: -fno-builtin-printf 
Benefits are: drops reference to out-of-line putchar(), fixes a few cases
of failed string merge.

function                                             old     new   delta
i2cdump_main                                        1488    1502     +14
sha256_process_block64                               423     433     +10
sendmail_main                                       1183    1185      +2
list_table                                          1114    1116      +2
i2cdetect_main                                      1235    1237      +2
fdisk_main                                          2852    2854      +2
builtin_type                                         119     121      +2
unicode_conv_to_printable2                           325     324      -1
scan_recursive                                       380     378      -2
mkfs_minix_main                                     2687    2684      -3
buffer_fill_and_print                                178     169      -9
putchar                                              152       -    -152
------------------------------------------------------------------------------
(add/remove: 0/2 grow/shrink: 7/4 up/down: 34/-167)          Total: -133 bytes
   text    data     bss     dec     hex filename
 937788     932   17676  956396   e97ec busybox_old
 937564     932   17676  956172   e970c busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2015-10-07 22:42:45 +02:00
Denys Vlasenko
c65a7596df adduser: fix help text 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2015-09-21 21:11:12 +02:00
Bernhard Reutner-Fischer
65db14ec50 adduser: Add -k /path/to/skel 
function                                             old     new   delta
.rodata                                           157069  157133     +64
adduser_main                                         921     936     +15
adduser_longopts                                     103     110      +7
packed_usage                                       30230   30236      +6
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 4/0 up/down: 92/0)               Total: 92 bytes

Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2015-09-21 21:09:18 +02:00
Sören Tempel
d862717328 login: don't print motd if .hushlogin exists in users home 
function                                             old     new   delta
login_main                                           978     996     +18

Signed-off-by: Sören Tempel <soeren@soeren-tempel.net>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2015-08-24 22:16:48 +02:00
Denys Vlasenko
936c8809ca deluser: also remove user from /etc/group 
function                                             old     new   delta
update_passwd                                       1270    1470    +200
deluser_main                                         310     332     +22

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2015-03-12 15:30:46 +01:00
Denys Vlasenko
23cfaab47d libpwdgrp: use getpwent() instead of getpwent_r() 
function                                             old     new   delta
massage_data_for_non_r_func                            -      90     +90
bb_internal_getpwent                                   -      69     +69
getXXnam_r                                            94     162     +68
fill_bounds                                          131     128      -3
deluser_main                                         355     310     -45
complete_username                                    123      78     -45
getXXnam                                             163      90     -73
massage_data_for_r_func                              103       -    -103
bb_internal_getpwent_r                               121       -    -121
------------------------------------------------------------------------------
(add/remove: 2/2 grow/shrink: 1/5 up/down: 227/-407)         Total: -163 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2015-02-07 21:21:02 +01:00
Denys Vlasenko
a14fa79592 deluser: implement --remove-home 
function                                             old     new   delta
deluser_main                                         308     355     +47
packed_usage                                       30149   30156      +7
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/0 up/down: 54/0)               Total: 54 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2015-02-05 18:35:52 +01:00
Denys Vlasenko
da9212667c libbb: code shrink by factoring out common update_utmp_DEAD_PROCESS 
function                                             old     new   delta
update_utmp_DEAD_PROCESS                               -      17     +17
telnetd_main                                        1685    1674     -11
mark_terminated                                       56      45     -11
handle_sigchld                                        74      63     -11

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2015-01-05 15:37:58 +01:00
Denys Vlasenko
cf76b5ce12 getty: set tty attrs so that control chars are shown as ^c 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2014-10-02 13:45:21 +02:00
Denys Vlasenko
fb8d1ef2d0 addgroup: mention -S in the help text 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2014-08-15 14:29:43 +02:00
Denys Vlasenko
539e2802eb getty: explain when setsid() fails. no code changes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2014-05-11 00:00:52 +02:00
Romain Naour
0e3334c8d8 su: add a delay if the password is incorrect 
Signed-off-by: Romain Naour <romain.naour@openwide.fr>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2014-03-16 11:18:19 +01:00
Bartosz Golaszewski
265a74b983 Kbuild: move CONFIG_PAM to general configuration 
Currently CONFIG_PAM depends on CONFIG_LOGIN, but is used by the httpd applet too.

This patch moves said option to general configuration, thus allowing to
compile httpd with PAM support independently from login.

Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2014-02-19 18:53:25 +01:00