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261 Commits

Author SHA1 Message Date
Denys Vlasenko
ed820ccda1 udhcpc: do not accept --background on NOMMU (same as -b) 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-05-08 15:11:02 +02:00
Denys Vlasenko
741bfa9a72 udhcpc: fix "udhcpc -x hostname:<name> not working on nommu" 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-05-08 15:02:07 +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
7c67f1e9ab udhcpc: make sure we do not overflow poll timeout 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-02-17 19:20:32 +01:00
Denys Vlasenko
52a515d187 udhcp: use poll() instead of select() 
function                                             old     new   delta
udhcp_sp_read                                         65      46     -19
udhcp_sp_fd_set                                       79      54     -25
udhcpd_main                                         1530    1482     -48
udhcpc_main                                         2780    2730     -50
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/4 up/down: 0/-142)           Total: -142 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-02-16 23:25:44 +01:00
Denys Vlasenko
f7683cdf83 Convert all udhcp applets to "new style" applet definitions 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-11-23 18:54:59 +01:00
Brian Foley
f9beeb22e2 udhcpc: check read of option length byte to be within packet 
function                                             old     new   delta
udhcp_get_option                                     215     220      +5
udhcp_run_script                                     802     803      +1

Signed-off-by: Brian Foley <bpfoley@google.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-10-25 14:20:55 +02:00
Peter Korsgaard
b6355e2bb5 udhcpc: Unconditionally call deconfig script, not only if lease is active 
The udhcpc script may be used to setup fallback configuration (E.G. IPv4LL,
fixed IP address, ..) that also needs to be cleaned up on release (E.G.
when SIGUSR2 is called or on shutdown with -R), so unconditionally call
deconfig.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-08-26 18:46:34 +02:00
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
44399e00ff udhcpc: run "deconfig" script in manual renew state too. closes 9061 
The bug was seen when the following is done:

    # killall 1 udhpc; killall 2 udhpc

Performing a DHCP renew
state: 2 -> 5
Sending renew...
Entering released state
state: 5 -> 6  <<<<<<<<<<<<<< not calling script!!!!

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-07-03 20:26:44 +02:00
Denys Vlasenko
3e134ebf6a *: slap on a few ALIGN1/2s where appropriate 
The result of looking at "grep -F -B2 '*fill*' busybox_unstripped.map"

   text	   data	    bss	    dec	    hex	filename
 829901	   4086	   1904	 835891	  cc133	busybox_before
 829665	   4086	   1904	 835655	  cc047	busybox

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-04-22 18:09:21 +02:00
Denys Vlasenko
df70a43af2 udhcp: add setup_common_bufsiz() as needed 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-04-21 18:54:36 +02:00
Denys Vlasenko
8f2e99c813 udhcp: get rid of bb_info_msg() 
function                                             old     new   delta
udhcpd_main                                         1501    1531     +30
d6_recv_raw_packet                                   251     264     +13
perform_d6_release                                   188     198     +10
udhcpc6_main                                        2443    2449      +6
udhcp_recv_raw_packet                                582     588      +6
udhcp_recv_kernel_packet                             132     138      +6
send_d6_renew                                        140     146      +6
d6_recv_kernel_packet                                118     124      +6
send_renew                                            77      82      +5
send_discover                                         85      90      +5
send_decline                                          84      89      +5
send_d6_select                                        97     102      +5
send_d6_discover                                     174     179      +5
perform_release                                      167     172      +5
count_lines                                           72      74      +2
udhcpc_main                                         2836    2837      +1
bb_info_msg                                          125       -    -125
------------------------------------------------------------------------------
(add/remove: 0/2 grow/shrink: 17/4 up/down: 117/-180)         Total: -63 bytes
   text	   data	    bss	    dec	    hex	filename
 924935	    906	  17160	 943001	  e6399	busybox_old
 924736	    906	  17160	 942802	  e62d2	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-03-30 18:41:23 +02:00
Denys Vlasenko
86d9f60f3a udhcpc: do not use -t NUM for counting "select" packets, use 3 
Otherwise, "-t 0" usage may end up sending them forever
if server does not respond.

function                                             old     new   delta
udhcpc_main                                         2846    2836     -10

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-03-04 17:00:56 +01:00
Hans Dedecker
abe8f7515a dhcpc: Use client IP address as source address for DHCP renew/rebind messages 
RFC2131 paragraph 4.1 states DHCP messages broadcast by a client prior to
that client obtaining its IP address must have the source IP address
field in the header set to 0.
Request messages transmitted in renewing and rebinding state need to use
the obtained IP address as source IP address in the header; this behavior
lines up with other implementations like ISC dhcp client.

Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-03-03 02:05:53 +01:00
Denys Vlasenko
352f79acbd udhcpc: fix OPTION_6RD parsing (could overflow its malloced buffer) 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-02-26 15:54:56 +01:00
Denys Vlasenko
8efcc9589b networking: allow dot at the end of the domain name in dhcp response 
Patch based on Balaji Punnuru <balaji.punnuru@gmail.com> work.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-02-11 17:44:44 +01:00
Denys Vlasenko
f2bf20f5d5 udhcpc: fix for some Android toolchain breakage 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2015-10-08 18:13:57 +02:00
Denys Vlasenko
c52cbea2bb libbb: add setsockopt_foo helpers 
function                                             old     new   delta
setsockopt_int                                         -      23     +23
do_load                                              918     934     +16
setsockopt_SOL_SOCKET_int                              -      14     +14
setsockopt_keepalive                                   -      10     +10
setsockopt_SOL_SOCKET_1                                -      10     +10
buffer_fill_and_print                                169     178      +9
setsockopt_1                                           -       8      +8
nfsmount                                            3560    3566      +6
redirect                                            1277    1282      +5
tcpudpsvd_main                                      1782    1786      +4
d6_send_kernel_packet                                272     275      +3
i2cget_main                                          380     382      +2
ed_main                                             2544    2545      +1
scan_recursive                                       380     378      -2
nbdclient_main                                       492     490      -2
hash_find                                            235     233      -2
cmdputs                                              334     332      -2
parse_command                                       1443    1440      -3
static.two                                             4       -      -4
ntpd_main                                           1039    1035      -4
const_int_1                                            4       -      -4
const_IPTOS_LOWDELAY                                   4       -      -4
RCVBUF                                                 4       -      -4
ntp_init                                             474     469      -5
change_listen_mode                                   316     310      -6
uevent_main                                          416     409      -7
arping_main                                         1697    1690      -7
telnet_main                                         1612    1603      -9
socket_want_pktinfo                                   42      33      -9
setsockopt_reuseaddr                                  21      10     -11
setsockopt_broadcast                                  21      10     -11
httpd_main                                           772     757     -15
get_remote_transfer_fd                               109      94     -15
make_new_session                                     503     487     -16
ftpd_main                                           2177    2160     -17
read_bunzip                                         1896    1866     -30
common_traceroute_main                              4099    4058     -41
common_ping_main                                    1836    1783     -53
------------------------------------------------------------------------------
(add/remove: 5/4 grow/shrink: 8/21 up/down: 111/-283)        Total: -172 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2015-08-24 20:00:17 +02:00
Arthur Gautier
c29021e2a5 udhcpc: dns labels can actually start with a number 
While RFC1035 recommends a label not to start with a number, there is
actually no such limitation in dns. One may buy a domain name like
0x1.net and use it.

This commit remove this check and allow a user to use such domains.

Signed-off-by: Arthur Gautier <baloo@gandi.net>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2015-07-30 03:03:58 +02:00
John Schroeder
8074a6ca4d udhcpd: account for script delay in lease 
Prevent nasty surprises if script runs longer than lease time / 2.

Signed-off-by: John Schroeder <jschroed@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2014-12-25 21:12:51 +01:00
Denys Vlasenko
28634924f0 udhcpc: account for script run time 
Based on the following user report:

I ran into an issue where I was seeing a long delay in the scripts called
in udhcp_run_script. I was using an old version of OpenWrt (kamikaze)
and a satellite modem. An NTP script was being called and the modem
would sometimes take a long time to respond to the DNS lookup when
it was offline.

This delay started affecting my lease time. The lease that I would
get from my satellite modem before it was online would be short:
only 60 seconds. The delay with NTP and the modem would typically
be about 18 seconds. This would cause the first DHCP renew request
from dhcpc to be a little late. Under certain circumstances,
I could even see the first DHCP renew to occur after the lease
had expired!

function                                             old     new   delta
udhcpc_main                                         2816    2837     +21

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2014-12-21 16:10:22 +01:00
Michel Stam
9f41271f3c udhcpd: add option for tweaking arpping 
Some clients have a very short timeout for sending the DHCP
DISCOVER, shorter than the arpping timeout of 2000 milliseconds
that udhcpd uses by default.

This patch allows tweaking the timeout, or disabling of arpping
altogether, at the risk of handing out addresses which are
already in use.

function                                             old     new   delta
udhcpd_main                                         1460    1501     +41
udhcpc_main                                         2814    2851     +37
packed_usage                                       29957   29974     +17
arpping                                              477     493     +16
find_free_or_expired_nip                             161     174     +13
send_offer                                           285     292      +7
nobody_responds_to_arp                                85      89      +4
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 7/0 up/down: 135/0)             Total: 135 bytes

Signed-off-by: Michel Stam <m.stam@fugro.nl>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2014-10-30 11:59:04 +01:00
Denys Vlasenko
85090c162b udhcpc: make hostname sanitization optional. Closes 3979 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2014-06-16 00:17:00 +02:00
Denys Vlasenko
e2318bbad7 udhcpc: ignore NAKs from "wrong" servers. Closes 4267 
function                                             old     new   delta
udhcpc_main                                         2716    2814     +98

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2014-02-27 18:15:50 +01:00
Denys Vlasenko
ffc3a93d0d udhcpc: fix BPF filter. Hopefully fixes the root cause of 4598 and 6746 
Use a *signed* large positive value in BPF filter to indicate success.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2014-02-19 14:17:11 +01:00
Denys Vlasenko
744ee5db1c udhcpc: in comments, explain the kind of raw socket we create 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2014-02-07 17:38:52 +01:00
Denys Vlasenko
e4785ca653 udhcpc: don't use BPF filter, users report problems (bugs 4598, 6746) 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2014-02-03 18:03:42 +01:00
Denys Vlasenko
8d3efaf35e udhcpc: allow zero server-id. Closes 6614. 
function                                             old     new   delta
bcast_or_ucast                                         -      47     +47
udhcp_send_kernel_packet                             271     295     +24
udhcpc_main                                         2696    2705      +9
udhcp_send_raw_packet                                456     459      +3
send_release                                          90      76     -14
send_renew                                           105      77     -28
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 3/2 up/down: 83/-42)             Total: 41 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-11-03 19:20:54 +01:00
Denys Vlasenko
9ae6d79307 udhcpc: tweak help text more 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-08-08 12:45:45 +02:00
Denys Vlasenko
456687fff1 udhcpc: tweak help text 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-08-08 12:33:18 +02:00
Denys Vlasenko
aadb485bd0 udhcpc: tweak help text 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-08-05 02:21:36 +02:00
Denys Vlasenko
60cb48ca50 whitespace cleanup. no code changes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-01-14 15:57:44 +01:00
Felix Fietkau
1c7a58dfb8 udhcpc[6]: allow discover_retries == 0 (infinite) 
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2012-09-27 16:22:24 +02:00
Alexey Froloff
3c62bbae94 ushcpc: gracefully handle packets with CHECKSUM_PARTIAL 
function                                             old     new   delta
udhcp_recv_raw_packet                                415     579    +164
change_listen_mode                                   317     370     +53
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/0 up/down: 217/0)             Total: 217 bytes

Signed-off-by: Alexey Froloff <raorn@raorn.name>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2012-09-17 16:02:44 +02:00
Denys Vlasenko
293c94564c udhcpc: make -O <numeric_opt> work. Closes 5402 
function                                             old     new   delta
udhcpc_main                                         2642    2685     +43
udhcp_recv_raw_packet                                414     415      +1
d6_recv_raw_packet                                   248     249      +1
udhcpc6_main                                        2430    2413     -17
add_client_options                                   239     213     -26
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/2 up/down: 45/-43)              Total: 2 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2012-07-27 13:25:07 +02:00
Denys Vlasenko
085b293338 udhcpc[6]: show select timeout in log 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2012-06-02 23:53:53 +02:00
Denys Vlasenko
d2266d43bf udhcpc: fix improper size calculation for OPTION_STRING_HOST 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2012-04-22 03:37:01 +02:00
Denys Vlasenko
7280d2017d udhcpc: sanitize hostnames in incoming packets. Closes 3979. 
The following options are replaced with string "bad" if they
contain malformed hostname:
HOST_NAME, DOMAIN_NAME, NIS_DOMAIN, TFTP_SERVER_NAME

function                                             old     new   delta
xmalloc_optname_optval                               850     888     +38
attach_option                                        440     443      +3
len_of_option_as_string                               13      14      +1
dhcp_option_lengths                                   13      14      +1
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 4/0 up/down: 43/0)               Total: 43 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-12-08 16:41:05 +01:00
Denys Vlasenko
860491c525 udhcpc: shrink code by setting xid more economically 
function                                             old     new   delta
send_decline                                          90      82      -8
udhcpc_main                                         2649    2640      -9

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-11-18 02:09:13 +01:00
Denys Vlasenko
a092a89d8f udhcpc6: rudimentary code to export data to script; fix IAADDR parsing 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-11-16 20:17:12 +01:00
Denys Vlasenko
7e21f0491c udhcpc[6]: tweak help text, remove -B from udhcpc6 and "--version" from both 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-11-08 11:39:41 +01:00
Denys Vlasenko
50089fc61c udhcpc: trim help text, rename badly-named variable 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-11-07 15:44:46 +01:00
Denys Vlasenko
0fd4347ced udhcpc: code shrink 
function                                             old     new   delta
udhcpc_main                                         2646    2649      +3
udhcp_run_script                                     816     802     -14

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-11-07 00:54:27 +01:00
Denys Vlasenko
d38ca03946 udhcpc: reuse string constant; remove unneeded memset(0) 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-11-05 01:25:03 +01:00
Denys Vlasenko
2017d48c0d udhcpc: deprecate --hostname NAME 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-11-05 01:24:14 +01:00
Denys Vlasenko
ee320c6d9c getty: reset tty attrs on Ctrl-C and Ctrl-D too 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-10-23 18:05:58 +02:00
Denys Vlasenko
2af2acf9b5 udhcpc: add comment about server IP 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-10-20 14:47:41 +02:00
Denys Vlasenko
fbca0c68a7 udhcpc: in fill_envp, export BOOTP fields first 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-10-20 14:24:18 +02:00
Denys Vlasenko
cd4d78f525 dhcpc: fix the case where we might add extra space at the end of envvar. 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-10-20 13:21:55 +02:00
Denys Vlasenko
1dff672335 udhcpc: fix 6rd option formatting (was using 4 more bytes than there is) 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-10-20 12:29:18 +02:00
Denys Vlasenko
42816c204d udhcpc: remove unused argument in sprint_nip6 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-10-20 10:52:07 +02:00
Denys Vlasenko
7981d79ef0 udhcpc: small code shrink 
function                                             old     new   delta
udhcp_recv_raw_packet                                430     425      -5

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-10-20 10:34:05 +02:00
Denys Vlasenko
1f56e51ca1 udhcpc: add support for DHCP option 212 (RFC 5969) 
The patch is from OpenWRT people.

function                                             old     new   delta
xmalloc_optname_optval                               637     874    +237
dhcp_option_strings                                  237     243      +6
dhcp_optflags                                         68      70      +2
len_of_option_as_string                               12      13      +1
dhcp_option_lengths                                   12      13      +1
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 5/0 up/down: 247/0)             Total: 247 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-10-19 22:40:35 +02:00
Vladislav Grishenko
6464f15ddb udhcpc: on SIGUSR1, limit renew attempts time to 20 seconds; then do total reconfig 
Scenario:

1. udhcpc gets lease for 86400 secs and sleeps for 43200 before renew attempt

2. PC gets physically disconnected and connected to another network

3. some phy control software sends SIGUSR1 to renew the lease, SIGUSR2 isn't
used because newly connected network could be the same as before

4. udhcpc sends unicast renew requests until lease timeout fall to 60 sec.
They are ignored by new network dhcp servers

5. udhcpc sends broadcast rebind requests for 60 seconds, which are NAKed
or ignored too

6. udhcpc deconfigs and starting from discover state, gets new lease for the
new network

So, pt.4+5 it could take up to 86400 secs without correct lease, which is
too long and not acceptable.

Second SIGUSR1 will immediately run into deconfig/discover state, which is
not preferable in case of the same subnet replugged.

This patch makes sure after SIGUSR1 timeout is no more than -A NUM
(usually 20 sec). It means that renew will be requested via broadcast,
and if no replies come back, full deconf/reconf cycle will be initiated
in 20 seconds.

Signed-off-by: Vladislav Grishenko <themiron@mail.ru>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-10-18 01:37:47 +02:00
Leonid Lisovskiy
6c9c0a1dc9 udhcp: IF_UDHCP_VERBOSE() macro - improve code readability 
Signed-off-by: Leonid Lisovskiy <lly.dev@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-10-18 00:35:47 +02:00
Baruch Siach
e8f36330d9 networking: consolidate the IP checksum code. -129 bytes. 
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-09-07 17:55:40 +02:00
Dan Fandrich
f533ec8767 *: simplify Ethernet header includes 
Signed-off-by: Dan Fandrich <dan@coneharvesters.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-06-10 05:17:59 +02:00
Denys Vlasenko
5d3aaceb79 udhcpc: allow -O OPT take numeric params 
function                                             old     new   delta
udhcpc_main                                         2623    2654     +31

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-06-04 05:07:16 +02:00
Nigel Hathaway
c37d4c67e8 dhcpc: export unrecognized options in "optNN=XXXXXXXXX" form 
function                                             old     new   delta
udhcp_run_script                                     609     818    +209

Signed-off-by: Nigel Hathaway <Nigel.Hathaway@ubiquisys.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-04-26 02:38:29 +02:00
Denys Vlasenko
9ac5596a51 udhcpc: emit "correct" secs field 
In theory, sending secs set to constant zero should be ok too.
But some bleeping servers can actually be configured to answer ONLY
if secs is bigger than a preset value (!!)
http://developer.apple.com/library/mac/#documentation/Darwin/Reference/ManPages/man8/bootpd.8.html
grep for "reply_threshold_seconds"

function                                             old     new   delta
udhcpc_main                                         2573    2623     +50

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-03-12 05:37:54 +01:00
Keith Young
e6bb8d339f udhcpc: add -B option 
function                                             old     new   delta
udhcpc_longopts                                        -     262    +262
add_client_options                                   218     239     +21
packed_usage                                       28149   28163     +14
static.udhcpc_longopts                               250       -    -250
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 2/0 up/down: 297/-250)           Total: 47 bytes

Signed-off-by: Keith Young <stripydog7@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-03-07 03:19:42 +01:00
Vladislav Grishenko
713e6d78e1 udhcpc: use more correct, and more importantly, more understandable BPF code 
Signed-off-by: Vladislav Grishenko <themiron@mail.ru>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-02-14 04:50:30 +01:00
Denys Vlasenko
8993c3f260 udhcpc: document SIGUSRn effect in help text 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-12-25 06:21:54 +01:00
Denys Vlasenko
0bb35e19a7 udhcpd: reduce stack usage by ~700 bytes. +28 bytes code size 
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
 2010-10-21 12:33:10 +02:00
Denys Vlasenko
5d374e9b14 udhcpc: exit if iface disappeared; use correct MAC if it changes 
function                                             old     new   delta
udhcpc_main                                         2560    2618     +58

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-10-20 22:26:38 +02:00
Denys Vlasenko
c72c1d7b31 udhcpc: reduce stack usage by de-inlining routines with on-stack pkt buf 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-10-20 22:08:16 +02:00
Denys Vlasenko
a5048fa386 udhcpc: periodically reread our ifindex and mac 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-10-20 21:38:29 +02:00
Denys Vlasenko
b3af65b95d udhcpc: emit maxsize option in all non-NAK type packets 
Before, we were sending them only in DISCOVER packets.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-10-20 21:37:23 +02:00
Denys Vlasenko
c59e06e471 udhcpc: better help text 
function                                             old     new   delta
packed_usage                                       27452   27486     +34

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
 2010-10-20 16:10:59 +02:00
Denys Vlasenko
1cbdc03411 udhcpc: remove -c CLIENTID, it is hard to use, -x 61:hexstring does the same better 
function                                             old     new   delta
packed_usage                                       27802   27808      +6
static.udhcpc_longopts                               261     250     -11
udhcpc_main                                         2799    2780     -19
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/2 up/down: 6/-30)             Total: -24 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-10-20 01:42:37 +02:00
Denys Vlasenko
9e244c7600 udhcpc: move usage text to .c file. no code changes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-10-20 01:38:56 +02:00
Vladislav Grishenko
ad8def2d8a udhcpc: fix OPTION_IP_PAIR parsing 
http://git.busybox.net/busybox/commit/?id=7d3a48a003cd645edfae2b404493688022
revealed incorrect OPTION_IP_PAIR implementation, which doesn't respect
option length and causes erroneous classful routes, composed from garbage
or first bytes from the next DHCP packet option.

Signed-off-by: Vladislav Grishenko <themiron@mail.ru>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-10-17 12:27:50 +02:00
Denys Vlasenko
dd8adde386 *: introduce and use bb_unsetenv_and_free 
function                                             old     new   delta
bb_unsetenv_and_free                                   -      17     +17
tcpudpsvd_main                                      1819    1810      -9
safe_setenv                                           58      47     -11
udhcp_run_script                                     630     616     -14
make_device                                         1683    1663     -20
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/4 up/down: 17/-54)            Total: -37 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-06-24 05:00:50 +02:00
Denys Vlasenko
b7d19cc400 dhcp: readability cleanups and small code shrink 
function                                             old     new   delta
udhcp_run_script                                     654     617     -37

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-05-30 23:41:23 +02:00
Denys Vlasenko
c03602baa4 udhcp: s/dhcp_option/dhcp_optflag/g 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-04-04 15:28:49 +02:00
Denys Vlasenko
9c0ea86caa udhcpc: trivial shrink 
function                                             old     new   delta
udhcpc_main                                         2801    2785     -16

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-04-04 02:12:03 +02:00
Denys Vlasenko
243ddcbc76 udhcpd: support decoding of option 120 "SIP servers". Closes bug 737 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-04-03 17:34:52 +02:00
Denys Vlasenko
9107b63a7f udhcp: abort if we see unknown option, and show valid options if so 
function                                             old     new   delta
udhcp_option_idx                                       -      77     +77
udhcp_str2optset                                     366     351     -15
udhcpc_main                                         2845    2801     -44
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/2 up/down: 77/-59)             Total: 18 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-03-27 23:23:41 +01:00
Denys Vlasenko
385b4562e3 udhcp: cosmetic cleanups; one case of s/full_read/xread/ 
function                                             old     new   delta
dumpleases_main                                      632     623      -9

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-03-26 10:09:34 +01:00
Denys Vlasenko
7724c766bd udhcp: pass pointer to whole packet to "add option" functions 
This is needed for "overflow option" support

function                                             old     new   delta
udhcp_find_option                                      -      34     +34
udhcp_add_binary_option                               94     106     +12
write_leases                                         227     223      -4
udhcp_init_header                                     86      82      -4
send_release                                         104      99      -5
init_packet                                           87      81      -6
add_client_options                                   160     154      -6
add_server_options                                   100      92      -8
udhcpd_main                                         1964    1954     -10
udhcpc_main                                         2859    2837     -22
find_option                                           34       -     -34
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 1/8 up/down: 46/-99)            Total: -53 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-03-26 09:32:09 +01:00
Denys Vlasenko
a8f6b99987 udhcp: move options.c to common.c; disable unused bool and s16 option code 
function                                             old     new   delta
udhcp_add_binary_option                                -      94     +94
udhcp_str2nip                                          -      42     +42
len_of_option_as_string                               12      10      -2
dhcp_option_lengths                                   12      10      -2
udhcpc_main                                         2859    2851      -8
read_nip                                              42       -     -42
xmalloc_optname_optval                               590     536     -54
udhcp_str2optset                                     443     366     -77
udhcp_add_option_string                               86       -     -86
------------------------------------------------------------------------------
(add/remove: 2/2 grow/shrink: 0/5 up/down: 136/-271)         Total: -135 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-03-26 08:35:24 +01:00
Denys Vlasenko
7e6add1dfc udhcpc: add -x OPT:VAL option 
function                                             old     new   delta
udhcp_str2optset                                       -     443    +443
add_client_options                                     -     160    +160
udhcpc_main                                         2753    2857    +104
packed_usage                                       26670   26689     +19
attach_option                                        380     385      +5
udhcpd_main                                         1964    1965      +1
udhcp_add_option_string                               94      86      -8
add_param_req_option                                 128       -    -128
read_opt                                             443       -    -443
------------------------------------------------------------------------------
(add/remove: 2/2 grow/shrink: 4/1 up/down: 732/-579)          Total: 153 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-03-25 20:32:38 +01:00
Denys Vlasenko
dde8bdcc5b udhcp: merge options.h into common.h, script.c into dhcpc.c 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-03-22 14:29:13 +01:00
Denys Vlasenko
8d1144565f udhcpc: do not test for srand init, just do it at the start 
function                                             old     new   delta
udhcpc_main                                         2855    2867     +12
static.initialized                                     1       -      -1
client_background                                     32      31      -1
perform_release                                      124     122      -2
random_xid                                            38       -     -38
------------------------------------------------------------------------------
(add/remove: 0/2 grow/shrink: 1/2 up/down: 12/-42)            Total: -30 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-03-22 13:44:09 +01:00
Denys Vlasenko
501e35c474 udhcp: merge clientpacket.c into dhcpc.c 
function                                             old     new   delta
udhcpc_main                                         2569    2855    +286
perform_release                                      122     124      +2
client_background                                     31      32      +1
init_packet                                          156      88     -68
send_decline                                         114       -    -114
send_discover                                        121       -    -121
send_select                                          130       -    -130
------------------------------------------------------------------------------
(add/remove: 0/4 grow/shrink: 3/1 up/down: 289/-433)         Total: -144 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-03-22 13:43:12 +01:00
Denys Vlasenko
6b24d5354b udhcpc: merge clientsocket.c into dhcpc.c. +4 bytes. 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-03-22 13:42:13 +01:00
Denys Vlasenko
87fa216e1e udhcpc: make it possible to disable vendor id; improve help text 
function                                             old     new   delta
init_packet                                          135     139      +4
packed_usage                                       26789   26786      -3
alloc_dhcp_option                                     67      63      -4
udhcpc_main                                         2467    2447     -20
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/3 up/down: 4/-27)             Total: -23 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-03-20 18:06:23 +01:00
Denys Vlasenko
219757fee9 udhcpc: fix bug 629: use bcast receive when we perform rebinding 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2009-10-08 23:05:46 +02:00
Justin Maggard
aa369e0f0d udhcpc: if got IP successfully, disable -n for future renewals 
Signed-off-by: Justin Maggard <jmaggard10@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2009-08-13 01:26:17 +02:00
Denys Vlasenko
4abfc2642d udhcpc: small simplification 
function                                             old     new   delta
udhcpc_main                                         2401    2398      -3

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2009-07-19 04:35:16 +02:00
Denys Vlasenko
753a3ce73e typo 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2009-07-19 04:27:10 +02:00
Denys Vlasenko
7d6a791ef6 udhcpc: add/edit comments, no code changes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2009-07-19 04:24:23 +02:00
Denys Vlasenko
13ca4b12e2 udhcpc: simplify manual renew (make it more similar to automatic one) 
function                                             old     new   delta
udhcp_run_script                                     669     673      +4
udhcpc_main                                         2414    2401     -13
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/1 up/down: 4/-13)              Total: -9 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2009-07-19 04:07:21 +02:00
Denys Vlasenko
4248c33a85 udhcpc: fix a read error loop (e.g.: device is down) blocking TERM 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2009-06-26 23:23:16 +02:00
Denys Vlasenko
f3b92d3856 getopt: FEATURE_GETOPT_LONG for -l; rename GETOPT_LONG to LONG_OPTS 
Signed-off-by: Colin Watson <cjwatson@ubuntu.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2009-06-19 12:10:38 +02:00
Denys Vlasenko
4945ed32d7 udhcpc: fix format of one log message 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2009-06-17 11:58:11 +02:00
Denys Vlasenko
31af3d5a1d udhcp: shorten mac len from 16 to 6 in lease file 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2009-06-17 11:57:09 +02:00
Denys Vlasenko
ac906fa85e udhcp: change UDHCP_DEBUG into int, make verbosity selectable with -v 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2009-06-17 11:54:52 +02:00
Denys Vlasenko
26918dd28e udhcp: rename server/client_config.arp to server_mac and client_mac 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2009-06-16 12:04:23 +02:00