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Commit 26633f8

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Create grep_inet.sql
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‎functions/grep_inet.sql‎

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create or replace function grep_inet(str text)
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returns table (order_num int, "all" text, addr inet, port int, mask int)
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stable
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returns null on null input
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parallel safe -- Postgres 10 or later
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language sql
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as $func$
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select (row_number() over ())::int as order_num,
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m[1] as all,
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array_to_string(m[2:5], '.')::inet as addr,
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m[6]::int as port,
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m[7]::int as mask
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from regexp_matches(str,
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$$
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( #1 all
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(?<![\d.:/]) #boundary
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(\d{1,3}) \. (\d{1,3}) \. (\d{1,3}) \. (\d{1,3}) #2-5 addr 1..255
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(?:
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: (\d{1,5}) #6 port 1..65535
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| / (\d{1,2}) #7 mask 0..32
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)?
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(?![\d.:/]) #boundary
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)
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$,ドル 'xg') as t(m)
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where not exists(select
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from unnest(m[2:5]) u(e)
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where e::int not between 0 and 255)
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and (m[6] is null or m[6]::int between 1 and 65535)
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and (m[7] is null or m[7]::int between 0 and 32);
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$func$;
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comment on function grep_inet(str text) is $$
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Захватывает из строки все существующие IP адреса.
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IP адрес может иметь необязательный порт или маску.
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$$;
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--TEST
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do $do$
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declare
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str_in constant text not null default $$
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#valid
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0.0.0.0
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1.2.3.4
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-1.2.3.4
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1.2.3.4-
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01.02.03.04
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001.002.003.004
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9.9.9.9
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10.10.10.10
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99.99.99.99
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100.100.100.100
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255.255.255.255
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127.0.0.1
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192.168.1.1:1
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192.168.1.255:65535
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192.168.1.1/0
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192.168.1.255/32
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#invalid octet range
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256.2.3.4
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1.256.3.4
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1.2.256.4
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1.2.3.256
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#invalid boundary
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1.1.1.1.
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1.1.1.1/
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1.1.1.1:
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1.1.1.1:9.
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1.1.1.1:99:
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1.1.1.1:999/
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1.1.1.1/0.
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1.1.1.1/32:
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1.1.1.1/32/
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.2.2.2.2
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:2.2.2.2
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/2.2.2.2
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#invalid length
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1.2.3.4.5
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1.2.3
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0.1
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3...3
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#invalid mask
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5.5.5.5/-1
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5.5.5.5/33
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#invalid port
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5.5.5.5:0
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5.5.5.5:65536
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$$;
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str_out constant text not null default '[{"order_num":1,"all":"0.0.0.0","addr":"0.0.0.0","port":null,"mask":null}, {"order_num":2,"all":"1.2.3.4","addr":"1.2.3.4","port":null,"mask":null}, {"order_num":3,"all":"1.2.3.4","addr":"1.2.3.4","port":null,"mask":null}, {"order_num":4,"all":"1.2.3.4","addr":"1.2.3.4","port":null,"mask":null}, {"order_num":5,"all":"01.02.03.04","addr":"1.2.3.4","port":null,"mask":null}, {"order_num":6,"all":"001.002.003.004","addr":"1.2.3.4","port":null,"mask":null}, {"order_num":7,"all":"9.9.9.9","addr":"9.9.9.9","port":null,"mask":null}, {"order_num":8,"all":"10.10.10.10","addr":"10.10.10.10","port":null,"mask":null}, {"order_num":9,"all":"99.99.99.99","addr":"99.99.99.99","port":null,"mask":null}, {"order_num":10,"all":"100.100.100.100","addr":"100.100.100.100","port":null,"mask":null}, {"order_num":11,"all":"255.255.255.255","addr":"255.255.255.255","port":null,"mask":null}, {"order_num":12,"all":"127.0.0.1","addr":"127.0.0.1","port":null,"mask":null}, {"order_num":13,"all":"192.168.1.1:1","addr":"192.168.1.1","port":1,"mask":null}, {"order_num":14,"all":"192.168.1.255:65535","addr":"192.168.1.255","port":65535,"mask":null}, {"order_num":15,"all":"192.168.1.1/0","addr":"192.168.1.1","port":null,"mask":0}, {"order_num":16,"all":"192.168.1.255/32","addr":"192.168.1.255","port":null,"mask":32}]';
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begin
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--positive and negative both
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assert (select json_agg(to_json(t))::text = str_out
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from grep_inet(str_in) as t);
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end;
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$do$;

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