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Author SHA1 Message Date
Nicholas J. Kain
e1eb41e1c0 Remove a debugging print. 2011-03-30 20:21:44 -04:00
Nicholas J. Kain
03717e1593 If physical link state changes to UP and a lease is bound, check to see if 
the currently assigned gateway/router still replies to ARP queries.  If so,
keep the lease.  If not, get a new lease.

Save the IP address of the current gateway/router.
Remove an outdated check for a buggy compiler.
Fix a typo in the previous commit that caused timeouts to be 1000x faster than
they should be.
 2011-03-30 20:13:48 -04:00
Nicholas J. Kain
de23d2241d Improve timeout backoff. It's a capped linear backoff. RFC specifies 
capped randomized exponential, but I don't feel like incurring the cost
when the cap is so low.
Add comments for the dhcpMessage structure members.
 2011-03-30 18:58:09 -04:00
Nicholas J. Kain
18e6f8d2c6 Remove a unnecessary debug print from add_u32_option(). 2011-03-30 16:41:29 -04:00
Nicholas J. Kain
953443f688 Untabify and headerize ifchange.[ch]. 2011-03-30 16:38:53 -04:00
Nicholas J. Kain
6265a0e973 Untabify options.[ch]. 2011-03-30 16:35:23 -04:00
Nicholas J. Kain
09613fd77a Fold req_opts[] and list_opts[] into options[].type, and modify accessors 
accordingly.
 2011-03-30 16:34:09 -04:00
Nicholas J. Kain
5d7bcbb2d4 Change parameters for add_option_request_list(). 
Make all unsigned char into uint8_t in options.[ch].
 2011-03-30 16:05:28 -04:00
Nicholas J. Kain
ddf9daf8e4 Do more boundary and sanity checking when adding dhcp options. 
Simplify parameter list for ifchd_cmd().
 2011-03-30 15:57:01 -04:00
Nicholas J. Kain
0e62d46f8b Explicitly track length in get_end_option_idx(). 
Rename get_options() to get_option_data() and end_options() to
get_end_option_idx().
 2011-03-30 12:04:38 -04:00
Nicholas J. Kain
97978711de Isolate the dhcp_option options[] array to options.c and provide abstract 
accessors for its data.
 2011-03-30 11:36:27 -04:00
Nicholas J. Kain
16460699fc Use inet_ntop() in ifchange.c rather than a homebrew function. 
Get rid of a lousy hack in ifchange.c that translated the output of ifchd_cmd()
by changing every '=' to a ':'.  ifchd_cmd() is not called anywhere else, so
just make ifchd_cmd() generate the proper output.
Make buffer size accounting stricter.
 2011-03-30 11:16:38 -04:00
Nicholas J. Kain
97137ec3fc Handle STRING options properly in fill_options and refactor a bit. 2011-03-30 10:39:11 -04:00
Nicholas J. Kain
7c32f968c9 Perform length and type checking in ifchange.c:fill_options.c(). 2011-03-30 10:13:34 -04:00
Nicholas J. Kain
1437f520ca Rewrite get_option(): new version fixes at least one bug, and is much easier 
to understand and verify as correct.  It also returns the length of the
extracted option.
 2011-03-30 09:35:17 -04:00
Nicholas J. Kain
f0865812d2 Kill unused function find_options() and unused struct option_set. 2011-03-30 08:21:06 -04:00
Nicholas J. Kain
2719d12d3c struct dhcp_option flags field is now exclusively for type, so rename it. 
Remove unused struct dhcp_option types.
 2011-03-30 08:19:08 -04:00
Nicholas J. Kain
f28c0c7445 OPTION_LIST is unused, remove it. 2011-03-30 08:12:56 -04:00
Nicholas J. Kain
d4171420a1 Fix sending DHCP_MAX_SIZE option. 
Move DHCP_PARAM_REQ message types out of the options[] structure.
Make ipchange.c:translation_option() less insane.
 2011-03-30 08:02:25 -04:00
Nicholas J. Kain
811cc67e16 Move add_requests() from dhcpmsg.c to options.c. Fixes a layering violation. 
Document an ugly-as-hell code bit in ifchange.c.
Add some debugging messages for the netlink response code.
Clean headers a bit more.
 2011-03-30 07:26:42 -04:00
Nicholas J. Kain
3c85228aaf Add new code for creating DHCP option data, and use it in ndhc.c. 2011-03-30 07:05:00 -04:00
Nicholas J. Kain
13d9119f3a Remove dhcpd.h. 2011-03-30 05:55:12 -04:00
Nicholas J. Kain
ef9d9d26df Move some defines out of dhcpd.h. 2011-03-30 05:37:22 -04:00
Nicholas J. Kain
6869a3ba20 Reduce log spam by removing the "adding option" print. 2011-03-30 05:33:44 -04:00
Nicholas J. Kain
d01b104d48 Handle netlink interface-up notification for non-DS_BOUND states. 2011-03-30 05:24:16 -04:00
Nicholas J. Kain
1ef44c1e4b Document DHCP options in bound_if(). 2011-03-30 05:23:46 -04:00
Nicholas J. Kain
9d03795a15 Wire up the netlink socket to the epoll handler. Still need to actually 
react to events in the processing function.
Pass the client_state structure to the netlink code explicitly rather than
making it a global variable.
 2011-03-29 15:34:00 -04:00
Nicholas J. Kain
55bc002ad6 Use netlink for getting interface mac and index in ndhc instead of ioctl. 2011-03-29 14:37:45 -04:00
Nicholas J. Kain
a53a82bbc5 After fork(), a signalfd-created file descriptor still returns signal info 
for the parent.  Close and recreate a new signalfd after forking into the
background.
 2010-12-27 10:05:43 -05:00
Nicholas J. Kain
03d3cbfdb9 Do not treat a failure to write the pid file after backgrounding after 
obtaining a lease as a fatal error.
 2010-12-26 18:21:58 -05:00
Nicholas J. Kain
11e71837fd Set arp socket as nonblocking. 2010-12-26 18:19:39 -05:00
Nicholas J. Kain
6f483045f4 Remove redundant #include. 2010-12-26 18:17:41 -05:00
Nicholas J. Kain
0f3d4598ad Add a missing header and remove an unused variable. 2010-12-26 15:06:16 -05:00
Nicholas J. Kain
ea4041983d Use non-blocking sockets for the listen socket. 2010-12-26 15:05:00 -05:00
Nicholas J. Kain
8b97107b8d Allow receive of short dhcp packets over raw listen sockets. 2010-12-26 15:03:14 -05:00
Nicholas J. Kain
08301a7053 Update DESIGN 2010-12-24 10:49:45 -05:00
Nicholas J. Kain
121e4d1510 Fix --hostname option. 2010-12-24 10:44:06 -05:00
Nicholas J. Kain
d96cb14711 Fix stale declaration of arp_check(). 2010-12-24 10:40:46 -05:00
Nicholas J. Kain
87b28de015 Fix --clientid option. 2010-12-24 10:27:24 -05:00
Nicholas J. Kain
c0b699ba88 Rename script.[ch] to ifchange.[ch]. 2010-12-24 10:12:41 -05:00
Nicholas J. Kain
eab048fec7 Remove old files from original ndhc. 2010-12-24 10:04:16 -05:00
Nicholas J. Kain
08f7db1637 Rename clientpacket.c to dhcpmsg.c. 2010-12-24 10:01:12 -05:00
Nicholas J. Kain
d04916aec5 Rename arpping.[ch] to arp.[ch]. 2010-12-24 09:58:47 -05:00
Nicholas J. Kain
8e905d0611 Move background() to sys.[ch]. 2010-12-24 09:47:09 -05:00
Nicholas J. Kain
59a0661eb9 Move change_listen_mode to packet.c. 2010-12-24 09:41:52 -05:00
Nicholas J. Kain
94ad810260 Move timeout and arp handling code out to arpping.c and timeout.c. 2010-12-24 09:32:58 -05:00
Nicholas J. Kain
adcc4bdd3d Move dhcp packet reply code to packet.c. 2010-12-24 08:55:59 -05:00
Nicholas J. Kain
9390e131b6 Move client runtime state structure declaration and flags to config.h. 2010-12-24 07:07:48 -05:00
Nicholas J. Kain
8a3deb3c6a Move dhcp client runtime global state into global struct client_state_t cs. 2010-12-24 07:00:42 -05:00
Nicholas J. Kain
406e316274 Split state machine apart into functions. 2010-12-24 06:31:06 -05:00