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62 Commits

Author SHA1 Message Date
Denys Vlasenko
9472e8a86f ftpd: change_identity() must be after chroot() 
Otherwise chroot() doesn't work for non-root

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2015-03-31 21:46:26 +02:00
Denys Vlasenko
64b744997e ftpd: prevent zombies. closes 7832 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2015-01-26 15:45:48 +01:00
Denys Vlasenko
7666fa1d02 ftpd: make LIST command show dotfiles too 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2014-09-15 23:35:58 +02:00
Morten Kvistgaard
feac9b607d ftpd: add optional support for authentication 
function                                             old     new   delta
cmdio_get_cmd_and_arg                                  -     237    +237
get_passwd                                             -      97     +97
check_password                                         -      82     +82
ftpd_main                                           2297    2178    -119
ask_and_check_password_extended                      206      84    -122
------------------------------------------------------------------------------
(add/remove: 3/0 grow/shrink: 0/2 up/down: 416/-241)          Total: 175 bytes

Signed-off-by: Morten Kvistgaard <MK@pch-engineering.dk>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2014-08-05 21:57:18 +02:00
Denys Vlasenko
9d7cbdeee3 ftpd: do not use root_fd if we are not in chroot 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2014-06-27 13:53:35 +02:00
Denys Vlasenko
27c290f7f2 ftpd: for LIST, open current directory *in the child* 
Last change introduced an open fd leak. This is the fix.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2014-06-27 12:37:00 +02:00
Denys Vlasenko
a6ae999b3b ftpd: escape chroot prior to re-executing ls helper 
When we merely chdir to saved "real" root fd,
exec("proc/self/exe") works for static executables but not
for dynamic ones (they can't find their interpreter).

With this patch, we also *chroot* to real root.
As a bonus, this gives us proper usernames, timezone conversion
etc.

function                                             old     new   delta
popen_ls                                             203     259     +56
ftpd_main                                           2362    2366      +4

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2014-06-27 12:24:39 +02:00
Denys Vlasenko
0b0ccd4570 ftpd: optimize writes of LIST results a bit 
function                                             old     new   delta
handle_dir_common                                    201     207      +6

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2014-06-26 12:07:48 +02:00
Denys Vlasenko
de3cae1348 ftpd: support deprecated XPWD command 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2014-06-25 16:23:59 +02:00
Denys Vlasenko
e1db338a51 ftpd: free allocated string on error path 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2012-07-11 00:26:24 +02:00
Denys Vlasenko
3bb858765e ftpd: fix MDTM's month value. Closes 5336 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2012-07-11 00:16:08 +02:00
Denys Vlasenko
0687a5b496 libbb: make xchroot do a chdir("/") after chroot 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2012-03-08 00:28:24 +01:00
Denys Vlasenko
66426760be *: remove "Options:" string from help texts 
function                                             old     new   delta
packed_usage                                       28706   28623     -83

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-06-05 03:58:28 +02:00
Denys Vlasenko
ca18311d0a libbb: make set_nport accept pointer to sockaddr, not to len_and_sockaddr. 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-04-07 17:52:20 +02:00
Denys Vlasenko
115c35d68e ftpd: better usage text 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-03-08 03:01:10 +01:00
Denys Vlasenko
0ef64bdb40 *: make GNU licensing statement forms more regular 
This change retains "or later" state! No licensing _changes_ here,
only form is adjusted (article, space between "GPL" and "v2" and so on).

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-08-16 20:14:46 +02:00
Denys Vlasenko
7783248eaa *: s/xatoi_u/xatoi_positive/g - I got bored of mistyping xatoi_u as xatou_i 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-08-12 14:14:45 +02:00
Pascal Bellard
926031b764 *: introduce and use xfork() and xvfork() 
function                                             old     new   delta
launch_helper                                        170     169      -1
setup_heredoc                                        312     302     -10
handle_dir_common                                    367     354     -13
expand_vars_to_list                                 2456    2443     -13
open_transformer                                      89      74     -15
data_extract_to_command                              439     423     -16
do_ipaddr                                           1406    1389     -17
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/7 up/down: 0/-85)             Total: -85 bytes

Signed-off-by: Pascal Bellard <pascal.bellard@ads-lu.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-07-04 15:32:38 +02:00
Denys Vlasenko
238c83bd82 ftpd: work around LIST -aXYZ too, not only LIST -lXYZ 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-04-21 18:05:10 -04:00
Denys Vlasenko
f6916dbed4 telnetd: fill hostname field in utmp/wtmp records 
function                                             old     new   delta
get_lsa                                                -     109    +109
make_new_session                                     438     504     +66
get_peer_lsa                                           -      10     +10
ftpd_main                                           2340    2267     -73
get_sock_lsa                                         101      10     -91
------------------------------------------------------------------------------
(add/remove: 2/0 grow/shrink: 1/2 up/down: 185/-164)           Total: 21 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-04-06 17:43:29 +02:00
Denys Vlasenko
4a1884da53 ftpd: shrink by 33 bytes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-04-03 14:59:12 +02:00
Denys Vlasenko
8031848938 typo fixes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-02-24 14:27:55 +01:00
Denys Vlasenko
98a4c7cf3d *: suppress ~60% of "aliased warnings" on gcc-4.4.1 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-02-04 15:00:15 +01:00
Denys Vlasenko
3581c62515 whitespace fixes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-01-25 13:39:24 +01:00
Stefan Seyfried
f3fc9ac166 ftpd: conditional support for broken clients 
Signed-off-by: Stefan Seyfried <stefan.seyfried@googlemail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-01-18 02:08:30 +01:00
Denys Vlasenko
33f9dc08e5 ftpd: code shrink 
function                                             old     new   delta
MMU:
handle_dir_common                                    354     338     -16
NOMMU:
ftpd_main                                           2437    2442      +5
popen_ls                                             201     174     -27

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-01-17 22:32:22 +01:00
Denys Vlasenko
a7ccdeef39 libbb: added xfdopen_for_read/write 
function                                             old     new   delta
xfdopen_helper                                         -      40     +40
logdir_open                                         1163    1184     +21
process_stdin                                        433     443     +10
xfdopen_for_write                                      -       9      +9
doCommands                                          2465    2474      +9
patch_main                                          1214    1222      +8
bbunpack                                             457     465      +8
xfdopen_for_read                                       -       7      +7
scan_tree                                            258     262      +4
xstrtoul_range_sfx                                   230     231      +1
sendmail_main                                        957     955      -2
passwd_main                                         1027    1023      -4
parse                                                969     964      -5
test_main                                            253     247      -6
sed_main                                             655     649      -6
dos2unix_main                                        437     429      -8
fbsplash_main                                        950     938     -12
handle_dir_common                                    371     354     -17
expand_vars_to_list                                 2197    2169     -28
update_passwd                                       1275    1246     -29
------------------------------------------------------------------------------
(add/remove: 3/0 grow/shrink: 7/10 up/down: 117/-117)           Total: 0 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2009-11-15 23:28:11 +01:00
Denys Vlasenko
8131eea3dc *: introduce and use ffulsh_all() 
function                                             old     new   delta
buffer_fill_and_print                                179     196     +17
fflush_all                                             -       9      +9
spawn                                                 87      92      +5
rtcwake_main                                         455     453      -2
...
alarm_intr                                            93      84      -9
readcmd                                             1072    1062     -10
bb_ask                                               345     333     -12
more_main                                            845     832     -13
flush_stdout_stderr                                   42      23     -19
xfflush_stdout                                        27       -     -27
flush_stderr                                          30       -     -30
------------------------------------------------------------------------------
(add/remove: 1/2 grow/shrink: 2/50 up/down: 31/-397)         Total: -366 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2009-11-02 14:19:51 +01:00
Denys Vlasenko
1b34d4f0b1 find: add zeroing of G.xxx; ftpd - remove extraneous zeroing of G.xxx 
Brought "G trick" to the same shape in a few more places.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2009-09-30 02:39:57 +02:00
Denys Vlasenko
035b4d77dc ftpd: allow multiple -S options to increase verbosity too, like -v 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2009-06-05 20:42:40 +02:00
Denys Vlasenko
8507e1f109 ftpd: fix a case when with -w unknown commands are ignored with no error code 
Signed-off-by: Stefan Seyfried <seife@suse.de>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2009-06-04 19:03:20 +02:00
Denis Vlasenko
5e34ff29bc *: mass renaming of USE_XXXX to IF_XXXX 
and SKIP_XXXX to IF_NOT_XXXX - the second one was especially
badly named. It was not skipping anything!
 2009-04-21 11:09:40 +00:00
Denis Vlasenko
42e78b978f ftpd: s/CONFIG_BUSYBOX_EXEC_PATH/bb_busybox_exec_path/ 2009-04-04 20:34:22 +00:00
Denis Vlasenko
9f57cf6604 ftpd: fix command fetching to not do it in 1-byte reads; 
fix command de-escaping. Tested to download files with embeeded \xff and LF.
libbb: tweaks for the above

function                                             old     new   delta
ftpd_main                                           2231    2321     +90
xmalloc_fgets_internal                               190     222     +32
xmalloc_fgets_str_len                                  -      27     +27
xmalloc_fgets_str                                      7      23     +16
xmalloc_fgetline_str                                  10      26     +16
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 4/0 up/down: 181/0)             Total: 181 bytes
 2009-03-18 17:32:44 +00:00
Denis Vlasenko
fce4a9454c ftpd: add some comments 2009-03-18 16:02:54 +00:00
Denis Vlasenko
e3b840ce98 ftpd: trim messages (but make sure they still make sense) 
text    data     bss     dec     hex filename                                                                                                                               
   4400       0       0    4400    1130 ftpd_old.o
   4346       0       0    4346    10fa ftpd.o
 2009-03-18 14:25:28 +00:00
Denis Vlasenko
5b492ee876 ftpd: do not use nasty tricks for re-execing if we are on MMU machine. 
On NOMMU, code is alomost the same, on MMU:

function                                             old     new   delta
handle_dir_common                                    223     390    +167
ftpd_main                                           2306    2231     -75
popen_ls                                             203       -    -203
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 1/1 up/down: 167/-278)         Total: -111 bytes
 2009-03-18 14:12:22 +00:00
Denis Vlasenko
1432cb4bd9 ftpd: add support for MDTM, I see clients often use it, 
it may allow client-side caching.

function                                             old     new   delta
ftpd_main                                           2232    2306     +74
gmtime_r                                               -      19     +19
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 1/0 up/down: 93/0)               Total: 93 bytes
 2009-03-18 00:45:00 +00:00
Denis Vlasenko
3a7a1eba2e ftpd: document NLST format 2009-03-17 13:03:06 +00:00
Denis Vlasenko
1a82555108 ftpd: instead of wordy HELP, implement useful, and smaller, FEAT. 
(HELP is still "supported" as an alias to FEAT)

   text    data     bss     dec     hex filename
 807331     468    7856  815655   c7227 busybox_old
 807246     468    7856  815570   c71d2 busybox_unstripped
 2009-03-17 12:40:34 +00:00
Denis Vlasenko
edb0de4283 ftpd: implement -vv verbosity 
function                                             old     new   delta
ftpd_main                                           2097    2190     +93
verbose_log                                            -      33     +33
cmdio_write_raw                                       12      34     +22
cmdio_write_ok                                        25      45     +20
cmdio_write_error                                     25      45     +20
cmdio_write                                           62      78     +16
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 5/0 up/down: 204/0)             Total: 204 bytes
 2009-03-17 12:23:24 +00:00
Denis Vlasenko
e6c94a611a ftpd: tweak timeout code 2009-03-17 05:11:51 +00:00
Denis Vlasenko
074c9036b2 ftpd: fix thinko: set_nport takes port in network order 2009-03-16 21:01:41 +00:00
Denis Vlasenko
fbf5846ce1 ftpd: dont use fdprintf for simple status messages 
function                                             old     new   delta
ftpd_main                                           2025    2055     +30
cmdio_write_ok                                        17      25      +8
cmdio_write_error                                     17      25      +8
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/0 up/down: 46/0)               Total: 46 bytes
 2009-03-16 20:54:45 +00:00
Denis Vlasenko
43bb7bba3b ftpd: simplify PORT check by assuming IP = peer's IP. 
Should be as safe as before this change.

function                                             old     new   delta
ftpd_main                                           2115    2025     -90
 2009-03-16 19:54:06 +00:00
Denis Vlasenko
20c8216897 ftpd: add idle and absolute timeouts. This is a security issue, 
otherwise ftpd may end up hanging indefinitely.

function                                             old     new   delta
timeout_handler                                        -     110    +110
ftpd_main                                           2019    2115     +96
packed_usage                                       25662   25685     +23
handle_upload_common                                 306     322     +16
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 3/0 up/down: 245/0)             Total: 245 bytes
 2009-03-16 16:19:53 +00:00
Denis Vlasenko
f2160b6a09 ftpd: security tightened up: 
PORT is not allowed on !IPv4
 PORT must have IP == peer's IP
 upload is allowed only into regular files

function                                             old     new   delta
ftpd_main                                           1815    2019    +204
handle_upload_common                                 260     306     +46
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/0 up/down: 250/0)             Total: 250 bytes
 2009-03-16 14:53:54 +00:00
Denis Vlasenko
fc58ba1298 ftpd: fix the bug where >2GB file ops report errors; 
make a few simplifications; add TODOs.

function                                             old     new   delta
port_or_pasv_was_seen                                  -      37     +37
get_remote_transfer_fd                               104     109      +5
handle_upload_common                                 265     260      -5
handle_dir_common                                    228     223      -5
popen_ls                                             211     203      -8
ftpd_main                                           1825    1815     -10
data_transfer_checks_ok                               37       -     -37
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 1/4 up/down: 42/-65)            Total: -23 bytes
 2009-03-15 15:54:58 +00:00
Denis Vlasenko
4221e90ae4 ftpd: stop unconditional logging to syslog. This was the only applet 
which was doing it. Added option -S to enable it when desired.

function                                             old     new   delta
packed_usage                                       25647   25666     +19
ftpd_main                                           1826    1825      -1
 2009-03-11 15:07:44 +00:00
Denis Vlasenko
5b28d314e7 ftpd: add LOG_NDELAY to openlog 2009-03-09 17:22:16 +00:00