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Basic RADIUS support - checkpoint

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This commit is contained in:
Vlad Grigorescu 2013-11-19 20:20:36 -05:00
parent 3d1fd6ca5e
commit 9e0b0f9187
15 changed files with 928 additions and 3 deletions
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26
scripts/base/utils/addrs.bro
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@ -1,4 +1,4 @@
##! Functions for parsing and manipulating IP addresses.
##! Functions for parsing and manipulating IP and MAC addresses.
# Regular expressions for matching IP addresses in strings.
const ipv4_addr_regex = /[[:digit:]]{1,3}\.[[:digit:]]{1,3}\.[[:digit:]]{1,3}\.[[:digit:]]{1,3}/;
@ -119,3 +119,27 @@ function addr_to_uri(a: addr): string
else
return fmt("[%s]", a);
}
## Given a string, extracts the hex digits and returns a MAC address in the
## format: 00:a0:32:d7:81:8f. If the string doesn't contain 12 or 16 hex digits,
## an empty string is returned.
##
## a: the string to normalize
##
## Returns: a normalized MAC address, or an empty string in the case of an error.
function normalize_mac(a: string): string
{
local result = to_lower(gsub(a, /[^A-Fa-f0-9]/, ""));
local octets: string_vec;
if ( |result| == 12 )
{
octets = str_split(result, vector(2, 4, 6, 8, 10));
return fmt("%s:%s:%s:%s:%s:%s", octets[1], octets[2], octets[3], octets[4], octets[5], octets[6]);
}
if ( |result| == 16 )
{
octets = str_split(result, vector(2, 4, 6, 8, 10, 12, 14));
return fmt("%s:%s:%s:%s:%s:%s:%s:%s", octets[1], octets[2], octets[3], octets[4], octets[5], octets[6], octets[7], octets[8]);
}
return "";
}