diff options
| author | Denys Vlasenko | 2011-12-08 16:41:05 +0100 |
|---|---|---|
| committer | Denys Vlasenko | 2011-12-08 16:41:05 +0100 |
| commit | 7280d2017d8075267a12e469983e38277dcf0374 (patch) | |
| tree | 3a6bd5c562b04dfadeb72ba7f599db66026977f1 /networking/udhcp/common.h | |
| parent | 53782d9221c854be057edfc4e847ea13717dfece (diff) | |
| download | busybox-7280d2017d8075267a12e469983e38277dcf0374.zip busybox-7280d2017d8075267a12e469983e38277dcf0374.tar.gz | |
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>
Diffstat (limited to 'networking/udhcp/common.h')
| -rw-r--r-- | networking/udhcp/common.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/networking/udhcp/common.h b/networking/udhcp/common.h index 479ae49..cfd5867 100644 --- a/networking/udhcp/common.h +++ b/networking/udhcp/common.h @@ -80,6 +80,9 @@ enum { OPTION_IP = 1, OPTION_IP_PAIR, OPTION_STRING, + /* Opts of STRING_HOST type will be sanitized before they are passed + * to udhcpc script's environment: */ + OPTION_STRING_HOST, // OPTION_BOOLEAN, OPTION_U8, OPTION_U16, |