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33 Commits

Author SHA1 Message Date
Denys Vlasenko
c7dc79e71d udhcpd: untangle incredibly messy handling of DHCPREQUEST 
Also fixes attacks possible via DHCPDECLINE / DHCPRELEASE

function                                             old     new   delta
udhcpd_main                                         1846    1949    +103
send_renew                                           105     142     +37
send_NAK                                              61       -     -61
send_ACK                                             180       -    -180
------------------------------------------------------------------------------
(add/remove: 0/2 grow/shrink: 2/0 up/down: 140/-241)         Total: -101 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-03-21 06:15:28 +01:00
Denys Vlasenko
2e7aa92836 udhcp: tweak udhcpd.conf example and comments. no code changes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-03-21 02:22:07 +01:00
Denys Vlasenko
e5ce91b41b udhcp: code shrink; disable time and log server options 
function                                             old     new   delta
add_server_options                                     -     100    +100
udhcp_add_simple_option                               92      90      -2
nobody_responds_to_arp                                88      85      -3
dhcp_options                                          66      62      -4
udhcp_add_option_string                              104      94     -10
udhcp_run_script                                     665     654     -11
dhcp_option_strings                                  203     188     -15
static.blank_chaddr                                   16       -     -16
send_ACK                                             211     180     -31
add_bootp_options                                     61       -     -61
udhcpd_main                                         1925    1846     -79
------------------------------------------------------------------------------
(add/remove: 1/2 grow/shrink: 0/8 up/down: 100/-232)         Total: -132 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-03-21 00:43:11 +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
0f62c4d065 udhcpd: remove five more options which do not make sense or not supported 
requestip, vendorclass, clientid are client-side variables,
          they do not make sense as udhcpd opts
dhcptype  is the packet type (not interesting, it's always 5)
userclass needs parser support in order to work

function                                             old     new   delta
dhcp_options                                          68      66      -2
read_opt                                             865     859      -6
dhcp_option_strings                                  253     203     -50
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/3 up/down: 0/-58)             Total: -58 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-03-20 07:12:21 +01:00
Denys Vlasenko
777706cb23 udhcp: remove support for some really old and odd options 
function                                             old     new   delta
dhcp_options                                          72      68      -4
dhcp_option_strings                                  271     253     -18

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-03-19 23:42:23 +01:00
Denys Vlasenko
97ef65483a udhcpc: support option 0x79 (static routes) (part of bug 341) 
function                                             old     new   delta
xmalloc_optname_optval                                 -     583    +583
dhcp_option_strings                                  258     266      +8
dhcp_options                                          70      72      +2
len_of_option_as_string                               11      12      +1
dhcp_option_lengths                                   11      12      +1
udhcp_run_script                                    1187     669    -518
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 4/1 up/down: 595/-518)           Total: 77 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2009-07-03 18:14:03 +02:00
Denys Vlasenko
7895b91743 udhcp: dname_dec may return NULL, account for that case 
Other random cleanips included...

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2009-07-03 16:59:59 +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
Denis Vlasenko
f81e8dbc74 *: make "pragma GCC visibility push(hidden)" less ugly 2009-04-09 12:35:13 +00:00
Denis Vlasenko
bd79c3d337 dhcpd: remember and record hostnames; optimize get_option 
dumpleases: show hostnames

function                                             old     new   delta
add_lease                                            230     292     +62
send_offer                                           403     421     +18
send_ACK                                             232     249     +17
read_leases                                          249     258      +9
dumpleases_main                                      604     609      +5
nobody_responds_to_arp                                84      86      +2
udhcp_end_option                                      32      30      -2
udhcp_get_option                                     222     171     -51
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 6/2 up/down: 113/-53)            Total: 60 bytes
 2009-04-01 12:36:09 +00:00
Denis Vlasenko
35a064b67f build system: tidying up CONFIG_xxx names (suggested by Rob) 2008-11-06 00:49:59 +00:00
Denis Vlasenko
739e30fbc3 udhcp: add inline docs; small code shrink 
function                                             old     new   delta
send_packet                                          103      87     -16
udhcpc_main                                         2359    2323     -36
 2008-09-26 23:45:20 +00:00
Denis Vlasenko
f1980f67d3 dhcp: add FAST_FUNC as appropriate. -160 bytes. 2008-09-26 09:34:59 +00:00
Denis Vlasenko
98636eb08c Use intra-DSO calls when we build libbusybox. No-op for normal build. 
This was Bernhard Fischer' idea.

   text    data     bss     dec     hex filename
 773549    7781    9740  791070   c121e busybox.t7/0_lib/libbusybox.so.1.11.0.svn_unstripped
 769683    7397    9740  786820   c0184 busybox.t9t/0_lib/libbusybox.so.1.11.0.svn_unstripped
 2008-05-09 17:59:34 +00:00
Denis Vlasenko
b76b9a4328 udhcpc: filter unwanted packets in kernel 
(Cristian Ionescu-Idbohrn <cristian.ionescu-idbohrn@axis.com>)
 2008-01-25 22:46:34 +00:00
Denis Vlasenko
b539c8452f dhcp: heed TODO item - divorced options from their string descriptions 
code shrink while at it.

function                                             old     new   delta
dhcp_option_strings                                    -     258    +258
udhcp_run_script                                    1135    1174     +39
dhcp_option_lengths                                    -      11     +11
udhcp_add_simple_option                               93      92      -1
packet_num                                             4       -      -4
read_opt                                             746     739      -7
udhcp_option_lengths                                  11       -     -11
udhcpc_main                                         2590    2494     -96
dhcp_options                                         490      70    -420
------------------------------------------------------------------------------
(add/remove: 2/2 grow/shrink: 1/4 up/down: 308/-539)         Total: -231 bytes
   text    data     bss     dec     hex filename
 775309     929    9100  785338   bfbba busybox_old
 775098     929    9084  785111   bfad7 busybox_unstripped
 2007-11-29 08:17:45 +00:00
Denis Vlasenko
35ff74676b dhcpc: let server know we don't like oversized packets. 
add TODO comment
 2007-11-28 19:23:12 +00:00
Denis Vlasenko
6884f665bd dhcp: stop using magic constants; use (htonl(CONST) != a) - it's smaller 
function                                             old     new   delta
udhcp_get_packet                                     146     134     -12
get_raw_packet                                       368     353     -15
 2007-11-23 00:08:54 +00:00
Denis Vlasenko
fbd2918f5c udhcp: MAC_BCAST_ADDR and blank_chaddr are in fact constant, move to rodata. 
a few global variables reduced to smallints
function                                             old     new   delta
add_lease                                             75     227    +152
static.blank_chaddr                                    -      16     +16
MAC_BCAST_ADDR                                         -       6      +6
sockfd                                                 4       8      +4
udhcp_run_script                                    1153    1155      +2
state                                                  8       5      -3
listen_mode                                            4       1      -3
perform_release                                      152     148      -4
fd                                                     8       4      -4
blank_chaddr                                          16       -     -16
udhcpc_main                                         2518    2497     -21
.rodata                                           131864  131832     -32
oldest_expired_lease                                  61       -     -61
clear_lease                                          127       -    -127
------------------------------------------------------------------------------
(add/remove: 2/3 grow/shrink: 3/6 up/down: 180/-271)          Total: -91 bytes
 2007-04-07 01:05:47 +00:00
Denis Vlasenko
5066473d41 udhcp: optionally support RFC3397 (by Gabriel L. Somlo <somlo@cmu.edu>) 2007-02-27 21:15:08 +00:00
Denis Vlasenko
c90c3f30a8 add "wpad" DHCP option. Spotted some optimization opportunities: -80 bytes 2006-11-23 12:57:49 +00:00
Denis Vlasenko
5a3395bc01 udhcp: fix indentation and style. 
Eliminate (group) a lot of smallish *.h files
Remove lots of unneeded #includes
 2006-11-18 19:51:32 +00:00
Denis Vlasenko
e175ff252f several fixes from openWRT project 2006-09-26 17:41:00 +00:00
"Robert P. J. Day"
63fc1a9e08 Standardize on the vi editing directives being on the first line. 2006-07-02 19:47:05 +00:00
Mike Frysinger
7031f62d9b add back in udhcp support 2006-05-08 03:20:50 +00:00
Mike Frysinger
787140df39 remove in place of external link 2006-03-23 23:44:29 +00:00
Paul Fox
b6f71645f4 move a couple of functions from common code (options.c) to udhcpd private 
code (files.c) to make udhcpc a little smaller.
 2005-09-22 19:03:24 +00:00
Eric Andersen
ad95373efc Use standard C99 types 2004-01-30 23:45:53 +00:00
Russ Dill
4a9e34c148 options is a pretty common symbol, bad idea to use as a global in udhcp when compiling into busybox 2003-12-15 22:09:36 +00:00
Russ Dill
1eb7a17b12 resync with udhcp cvs 2002-12-11 21:12:45 +00:00
Glenn L McGrath
6b5bd0e5ab Support using ip in udhcpc scripts. 
Slightly modified version of patch by Bastian Blank
 2002-12-08 22:17:54 +00:00
Russ Dill
61fb48930f added full udhcp integration 2002-10-14 21:41:28 +00:00