TCP Macros

CEL provides a set of predefined macros that can also be used in policy expressions. For convenience, the following custom macros are also supported:

Name	Return Type	Description
inCidrRange(ip string, cidr string)	bool	Returns true or false if the provided IP address falls within the provided CIDR range. Returns false if the provided CIDR range is invalid.
inCidrRanges(ip string, cidrs list)	bool	Returns true or false if the provided IP address falls within any of the provided CIDR ranges. Ignores any provided CIDR ranges that are invalid.

inCidrRange(ip string, cidr string)

Returns true or false if the provided IP address falls within the provided CIDR range. Returns false if the provided CIDR range is invalid.

YAML

# snippet
---
expressions:
  - inCidrRange(conn.client_ip, '66.249.66.1/24')

JSON

// snippet
{
  "expressions": [
    "inCidrRange(conn.client_ip, '66.249.66.1/24')"
  ]
}

inCidrRanges(ip string, cidrs list)

Returns true or false if the provided IP address falls within any of the provided CIDR ranges. Ignores any provided CIDR ranges that are invalid.

YAML

# snippet
---
expressions:
  - inCidrRanges(conn.client_ip, ['66.249.66.1/24', '2001:4860::/32'])

JSON

// snippet
{
  "expressions": [
    "inCidrRanges(conn.client_ip, ['66.249.66.1/24', '2001:4860::/32'])"
  ]
}