Packages
ash
3.1.2
3.29.3
3.29.2
3.29.1
3.29.0
3.28.0
3.27.8
3.27.7
3.27.6
3.27.5
3.27.4
3.27.3
3.27.2
3.27.1
3.27.0
3.26.0
3.25.2
3.25.1
3.25.0
retired
3.24.7
3.24.6
3.24.5
3.24.4
3.24.3
3.24.2
3.24.1
3.24.0
3.23.1
3.23.0
3.22.2
3.22.1
3.22.0
3.21.3
3.21.2
3.21.1
3.21.0
3.20.0
3.19.3
3.19.2
3.19.1
3.19.0
3.18.0
3.17.1
3.17.0
3.16.0
3.15.0
3.14.1
3.14.0
retired
3.13.2
3.13.1
3.13.0
3.12.0
3.11.3
3.11.2
3.11.1
3.11.0
3.10.1
3.10.0
3.9.0
3.8.0
3.7.6
3.7.5
3.7.4
3.7.3
3.7.2
3.7.1
3.7.0
retired
3.6.3
retired
3.6.2
3.6.1
3.6.0
3.5.43
3.5.42
3.5.41
3.5.40
3.5.39
3.5.38
3.5.37
3.5.36
3.5.35
3.5.34
3.5.33
3.5.32
3.5.31
3.5.30
3.5.29
3.5.28
3.5.27
3.5.26
3.5.25
3.5.24
3.5.23
3.5.22
3.5.21
3.5.20
3.5.19
3.5.18
3.5.17
3.5.16
3.5.15
3.5.14
3.5.13
3.5.12
3.5.11
3.5.10
3.5.9
3.5.8
3.5.7
3.5.6
3.5.5
3.5.4
3.5.3
3.5.2
3.5.1
3.5.0
3.4.74
retired
3.4.73
3.4.72
3.4.71
3.4.70
3.4.69
3.4.68
3.4.67
3.4.66
3.4.65
3.4.64
3.4.63
3.4.62
3.4.61
3.4.60
3.4.59
3.4.58
3.4.57
3.4.56
3.4.55
3.4.54
3.4.53
3.4.52
3.4.51
3.4.50
3.4.49
3.4.48
3.4.47
3.4.46
3.4.45
3.4.44
3.4.43
3.4.42
3.4.41
3.4.40
3.4.39
3.4.38
3.4.37
3.4.36
3.4.35
3.4.34
3.4.33
3.4.32
3.4.31
3.4.30
3.4.29
3.4.28
3.4.27
3.4.26
3.4.25
3.4.24
3.4.23
3.4.22
3.4.21
3.4.20
3.4.19
3.4.18
3.4.17
3.4.16
3.4.15
3.4.14
3.4.13
3.4.12
3.4.11
3.4.10
3.4.9
3.4.8
3.4.7
3.4.6
3.4.5
3.4.4
3.4.3
3.4.2
3.4.1
3.4.0
3.3.3
3.3.2
3.3.1
3.3.0
3.2.6
3.2.5
3.2.4
3.2.3
3.2.2
3.2.1
3.2.0
3.1.8
3.1.7
3.1.6
3.1.5
3.1.4
3.1.3
3.1.2
3.1.1
3.1.0
3.0.16
3.0.15
3.0.14
3.0.13
3.0.12
3.0.11
3.0.10
3.0.9
3.0.8
3.0.7
3.0.6
3.0.5
3.0.4
3.0.3
3.0.2
3.0.1
3.0.0
3.0.0-rc.46
3.0.0-rc.45
3.0.0-rc.44
3.0.0-rc.43
3.0.0-rc.42
3.0.0-rc.41
3.0.0-rc.40
3.0.0-rc.39
3.0.0-rc.38
3.0.0-rc.37
3.0.0-rc.36
3.0.0-rc.35
3.0.0-rc.34
3.0.0-rc.33
3.0.0-rc.32
3.0.0-rc.31
3.0.0-rc.29
3.0.0-rc.28
3.0.0-rc.27
3.0.0-rc.26
3.0.0-rc.25
3.0.0-rc.24
3.0.0-rc.23
3.0.0-rc.22
3.0.0-rc.21
3.0.0-rc.20
3.0.0-rc.19
3.0.0-rc.18
3.0.0-rc.17
3.0.0-rc.16
3.0.0-rc.15
3.0.0-rc.14
3.0.0-rc.13
3.0.0-rc.12
3.0.0-rc.11
3.0.0-rc.10
3.0.0-rc.9
3.0.0-rc.8
3.0.0-rc.7
3.0.0-rc.6
3.0.0-rc.5
3.0.0-rc.4
3.0.0-rc.3
3.0.0-rc.1
3.0.0-rc.0
2.21.15
2.21.14
2.21.13
2.21.12
2.21.11
2.21.10
2.21.9
2.21.8
2.21.7
2.21.6
2.21.5
2.21.4
2.21.3
2.21.2
2.21.1
2.21.0
2.20.3
2.20.2
2.20.1
2.20.0
2.19.14
2.19.13
2.19.12
2.19.11
2.19.10
2.19.9
2.19.8
2.19.7
2.19.6
2.19.5
2.19.4
2.19.3
retired
2.19.2
retired
2.19.1
retired
2.19.0
retired
2.18.2
2.18.1
2.18.0
2.17.24
2.17.23
2.17.22
2.17.21
2.17.20
2.17.19
2.17.18
2.17.17
2.17.16
2.17.15
2.17.14
2.17.13
2.17.12
2.17.11
2.17.10
2.17.9
2.17.8
2.17.7
2.17.6
2.17.5
2.17.4
2.17.3
2.17.2
2.17.1
2.17.0
2.16.1
2.16.0
2.15.20
2.15.19
2.15.18
2.15.17
2.15.16
2.15.15
2.15.14
2.15.13
2.15.12
2.15.11
2.15.10
2.15.9
2.15.8
2.15.7
2.15.6
2.15.5
2.15.4
2.15.2
2.15.1
2.15.0
2.14.21
2.14.20
2.14.19
2.14.18
2.14.17
2.14.16
2.14.15
2.14.14
2.14.13
2.14.12
2.14.11
2.14.10
2.14.9
2.14.8
2.14.7
2.14.6
2.14.5
2.14.4
2.14.3
2.14.2
2.14.1
2.14.0
2.13.4
retired
2.13.3
2.13.2
2.13.1
2.13.0
2.12.1
2.12.0
2.11.11
2.11.10
2.11.9
2.11.8
2.11.7
2.11.6
2.11.5
2.11.4
2.11.3
2.11.2
2.11.1
2.11.0
2.11.0-rc.3
2.11.0-rc.2
2.11.0-rc.1
2.11.0-rc.0
2.10.2
2.10.1
2.10.0
2.9.29
2.9.28
2.9.27
2.9.26
2.9.25
2.9.24
2.9.23
2.9.22
2.9.21
2.9.20
2.9.19
2.9.18
2.9.17
2.9.16
2.9.15
2.9.14
2.9.13
2.9.12
2.9.11
2.9.10
2.9.9
2.9.8
2.9.7
2.9.6
2.9.5
2.9.4
2.9.3
2.9.2
2.9.1
2.9.0
2.8.1
2.8.0
2.7.1
2.7.0
2.6.31
2.6.30
2.6.29
2.6.28
2.6.27
2.6.26
2.6.25
2.6.24
2.6.23
2.6.22
2.6.21
2.6.20
2.6.19
2.6.18
2.6.17
2.6.16
2.6.15
2.6.14
2.6.13
2.6.11
2.6.10
2.6.9
2.6.8
2.6.7
2.6.6
2.6.5
2.6.4
2.6.3
2.6.2
2.6.1
2.6.0
2.5.16
2.5.15
2.5.14
2.5.13
2.5.12
2.5.11
2.5.10
2.5.9
2.5.8
2.5.7
2.5.6
2.5.5
2.5.4
2.5.3
2.5.2
2.5.1
2.5.0
2.5.0-rc.6
2.5.0-rc.5
2.5.0-rc.4
2.5.0-rc.3
2.5.0-rc.2
2.5.0-rc.1
2.5.0-rc.0
2.4.30
2.4.29
2.4.28
2.4.27
2.4.26
2.4.25
2.4.24
2.4.23
2.4.22
2.4.21
2.4.20
2.4.19
2.4.18
2.4.17
2.4.16
2.4.15
2.4.14
2.4.13
2.4.12
2.4.11
2.4.10
2.4.9
2.4.8
2.4.7
2.4.6
2.4.5
2.4.4
2.4.3
2.4.2
2.4.1
2.4.0
2.3.0
2.2.0
2.1.0
2.0.0
2.0.0-rc.15
2.0.0-rc.14
2.0.0-rc.13
2.0.0-rc.12
2.0.0-rc.11
2.0.0-rc.10
2.0.0-rc.9
2.0.0-rc.8
2.0.0-rc.7
2.0.0-rc.6
2.0.0-rc.5
2.0.0-rc.4
2.0.0-rc.3
2.0.0-rc.2
2.0.0-rc.1
2.0.0-rc.0
2.0.0-pre.8
2.0.0-pre.7
2.0.0-pre.6
2.0.0-pre.5
2.0.0-pre.4
2.0.0-pre.3
2.0.0-pre.2
2.0.0-pre.1
2.0.0-pre.0
1.53.3
1.53.2
1.53.0
1.52.0-rc.22
1.52.0-rc.21
1.52.0-rc.20
1.52.0-rc.19
1.52.0-rc.18
1.52.0-rc.17
1.52.0-rc.16
1.52.0-rc.15
1.52.0-rc.14
1.52.0-rc.13
1.52.0-rc.12
1.52.0-rc.11
1.52.0-rc.10
1.52.0-rc.9
1.52.0-rc.8
1.52.0-rc.7
1.52.0-rc.6
1.52.0-rc.5
1.52.0-rc.4
1.52.0-rc.3
1.52.0-rc.2
1.52.0-rc.1
1.52.0-rc.0
1.51.2
1.51.1
retired
1.51.0
1.50.21
1.50.20
1.50.19
1.50.18
1.50.17
1.50.16
1.50.15
1.50.14
1.50.13
1.50.12
1.50.11
1.50.10
1.50.9
1.50.8
1.50.7
1.50.6
1.50.5
1.50.4
1.50.3
1.50.2
1.50.1
1.50.0
1.49.0
1.48.0-rc.30
1.48.0-rc.29
1.48.0-rc.28
1.48.0-rc.27
1.48.0-rc.26
1.48.0-rc.25
1.48.0-rc.24
1.48.0-rc.23
1.48.0-rc.22
1.48.0-rc.21
1.48.0-rc.20
1.48.0-rc.19
1.48.0-rc.18
1.48.0-rc.17
1.48.0-rc.16
1.48.0-rc.15
1.48.0-rc.14
1.48.0-rc.13
1.48.0-rc.12
1.48.0-rc.11
1.48.0-rc.10
1.48.0-rc.9
1.48.0-rc.8
1.48.0-rc.7
1.48.0-rc.6
1.48.0-rc.5
1.48.0-rc.4
1.48.0-rc.3
1.48.0-rc.2
1.48.0-rc.1
1.48.0-rc.0
1.47.12
1.47.11
1.47.10
1.47.9
1.47.8
1.47.7
1.47.6
1.47.5
1.47.4
1.47.3
1.47.2
1.47.1
1.47.0
1.46.13
1.46.12
1.46.11
1.46.10
1.46.9
1.46.8
1.46.7
1.46.6
1.46.5
1.46.4
1.46.3
1.46.2
1.46.1
1.46.0
1.45.0-rc9
1.45.0-rc8
1.45.0-rc7
1.45.0-rc6
1.45.0-rc5
1.45.0-rc4
1.45.0-rc3
1.45.0-rc20
1.45.0-rc2
1.45.0-rc19
1.45.0-rc18
1.45.0-rc17
1.45.0-rc16
1.45.0-rc15
1.45.0-rc14
1.45.0-rc13
1.45.0-rc12
1.45.0-rc11
1.45.0-rc10
1.45.0-rc1
1.45.0-rc0
1.44.13
1.44.12
1.44.11
1.44.10
1.44.9
1.44.8
1.44.7
1.44.6
1.44.5
1.44.4
1.44.3
1.44.2
1.44.1
1.44.0
1.43.12
1.43.11
1.43.10
1.43.9
1.43.8
1.43.7
1.43.6
1.43.5
1.43.4
1.43.3
1.43.2
1.43.1
1.43.0
1.42.0
1.41.12
1.41.11
1.41.10
1.41.9
1.41.8
1.41.7
1.41.6
1.41.5
1.41.4
1.41.3
1.41.2
1.41.1
1.41.0
1.40.0
1.39.7
1.39.6
1.39.5
1.39.4
1.39.3
1.39.2
1.39.1
1.39.0
1.38.0
1.37.2
1.37.1
1.37.0
1.36.22
1.36.21
1.36.19
1.36.18
1.36.17
1.36.16
1.36.15
1.36.14
1.36.13
1.36.12
1.36.11
1.36.10
1.36.9
1.36.8
1.36.7
1.36.6
1.36.5
1.36.4
1.36.3
1.36.2
1.36.0
1.35.1
1.35.0
1.34.9
1.34.8
1.34.7
1.34.6
1.34.5
1.34.4
1.34.3
1.34.2
1.34.1
1.34.0
1.33.0
1.32.2
1.32.1
1.32.0
1.31.1
1.31.0
1.30.2
1.30.1
1.29.0-rc1
1.29.0-rc0
1.28.1
1.28.0
1.27.1
1.27.0
1.26.13
1.26.12
1.26.11
1.26.10
1.26.9
1.26.8
1.26.7
1.26.6
1.26.5
1.26.4
1.26.2
1.26.1
1.26.0
1.25.8
1.25.7
1.25.6
1.25.5
1.25.4
1.25.3
1.25.2
1.25.1
1.25.0
1.24.2
1.24.1
1.24.0
1.23.3
1.23.2
1.23.1
1.23.0
1.22.1
1.22.0
1.20.1
1.20.0
1.19.1
1.19.0
1.18.1
1.18.0
1.17.1
1.17.0
1.16.2
1.15.1
1.15.0
1.14.0
1.13.4
1.13.3
1.13.2
1.13.1
1.13.0
1.12.0
1.11.1
1.11.0
1.10.0
1.9.0
1.8.0
1.7.0
1.6.8
1.6.7
1.6.6
1.6.5
1.6.4
1.6.3
1.6.2
1.6.1
1.6.0
1.5.1
1.5.0
1.4.1
1.4.0
1.3.1
1.3.0
1.2.1
1.2.0
1.1.3
1.1.2
1.1.0
1.0.3
1.0.2
1.0.1
1.0.0
0.13.1
0.13.0
0.12.0
0.10.0
0.9.1
0.9.0
0.8.0
0.7.0
0.6.5
0.6.4
0.6.3
0.6.2
0.6.1
0.6.0
0.5.2
0.5.1
0.5.0
0.4.0
0.3.0
0.2.0
0.1.9
0.1.8
0.1.3
0.1.1
0.1.0
A declarative, extensible framework for building Elixir applications.
Security advisory:
This version has known vulnerabilities.
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lib/ash/policy/policy.ex
defmodule Ash.Policy.Policy do
@moduledoc "Represents a policy on an Ash.Resource"
# For now we just write to `checks` and move them to `policies`
# on build, when we support nested policies we can change that.
defstruct [
:condition,
:policies,
:bypass?,
:checks,
:description,
:access_type
]
@type t :: %__MODULE__{}
@static_checks [
{Ash.Policy.Check.Static, [result: true]},
{Ash.Policy.Check.Static, [result: false]},
true,
false
]
def solve(authorizer) do
authorizer.policies
|> build_requirements_expression(authorizer)
|> case do
{true, authorizer} ->
{:ok, true, authorizer}
{false, authorizer} ->
{:ok, false, authorizer}
{expression, authorizer} ->
Ash.Policy.SatSolver.solve(expression, fn scenario, bindings ->
scenario
|> Ash.SatSolver.solutions_to_predicate_values(bindings)
|> Map.drop(@static_checks)
end)
|> case do
{:ok, scenarios} ->
{:ok, scenarios, authorizer}
{:error, error} ->
{:error, authorizer, error}
end
end
catch
{:error, authorizer, error} ->
{:error, authorizer, error}
end
@doc false
def transform(policy) do
if Enum.empty?(policy.policies) do
{:error, "Policies must have at least one check."}
else
{:ok, policy}
end
end
defp build_requirements_expression(policies, authorizer) do
{at_least_one_policy_expression, authorizer} =
at_least_one_policy_expression(policies, authorizer)
if at_least_one_policy_expression == false do
{false, authorizer}
else
{policy_expression, authorizer} =
if at_least_one_policy_expression == true do
compile_policy_expression(policies, authorizer)
else
{policy_expression, authorizer} = compile_policy_expression(policies, authorizer)
case {:and, at_least_one_policy_expression, policy_expression} do
{:and, false, _} ->
{false, authorizer}
{:and, _, false} ->
{false, authorizer}
{:and, true, true} ->
{true, authorizer}
{:and, left, true} ->
{left, authorizer}
{:and, true, right} ->
{right, authorizer}
other ->
{other, authorizer}
end
end
facts_expression =
authorizer.facts
|> Map.drop([true, false])
|> Ash.Policy.SatSolver.facts_to_statement()
if facts_expression do
{{:and, facts_expression, policy_expression}, authorizer}
else
{policy_expression, authorizer}
end
end
end
def at_least_one_policy_expression(policies, authorizer) do
policies
|> List.wrap()
|> Enum.reduce({[], authorizer}, fn
policy, {condition_exprs, authorizer} when is_list(condition_exprs) ->
case condition_expression(policy.condition, authorizer) do
{nil, authorizer} ->
{condition_exprs, authorizer}
{true, authorizer} ->
{true, authorizer}
{condition_expr, authorizer} ->
{[condition_expr | condition_exprs], authorizer}
end
_, {true, authorizer} ->
{true, authorizer}
end)
|> then(fn
{true, authorizer} ->
{true, authorizer}
{condition_exprs, authorizer} ->
{condition_exprs
|> Enum.reduce(false, fn
_, true ->
true
true, _ ->
true
false, acc ->
acc
condition, acc ->
{:or, condition, acc}
end), authorizer}
end)
end
def fetch_or_strict_check_fact(authorizer, %{check_module: mod, check_opts: opts}) do
fetch_or_strict_check_fact(authorizer, {mod, opts})
end
def fetch_or_strict_check_fact(authorizer, {Ash.Policy.Check.Static, opts}) do
{:ok, opts[:result], authorizer}
end
def fetch_or_strict_check_fact(authorizer, {check_module, opts}) do
Enum.find_value(authorizer.facts, fn
{{fact_mod, fact_opts}, result} ->
if check_module == fact_mod &&
Keyword.drop(fact_opts, [:access_type, :ash_field_policy?]) ==
Keyword.drop(opts, [:access_type, :ash_field_policy?]) do
{:ok, result}
end
_ ->
nil
end)
|> case do
nil ->
if check_module.requires_original_data?(authorizer, opts) &&
missing_original_data?(authorizer) do
throw(
{:error, authorizer,
Ash.Error.Forbidden.InitialDataRequired.exception(
source: "check: #{check_module.describe(opts)} requires initial data"
)}
)
else
case check_module.strict_check(authorizer.actor, authorizer, opts) do
{:ok, value} when is_boolean(value) or value == :unknown ->
authorizer = %{
authorizer
| facts: Map.put(authorizer.facts, {check_module, opts}, value)
}
if value == :unknown do
{:error, authorizer}
else
{:ok, value, authorizer}
end
{:error, error} ->
throw({:error, authorizer, Ash.Error.to_ash_error(error)})
end
end
{:ok, :unknown} ->
{:error, authorizer}
{:ok, value} ->
{:ok, value, authorizer}
end
end
defp missing_original_data?(%{
changeset: %Ash.Changeset{data: %Ash.Changeset.OriginalDataNotAvailable{}}
}) do
true
end
defp missing_original_data?(_), do: false
def fetch_fact(facts, %{check_module: mod, check_opts: opts}) do
fetch_fact(facts, {mod, opts})
end
def fetch_fact(_facts, {Ash.Policy.Check.Static, opts}) do
{:ok, opts[:result]}
end
def fetch_fact(facts, {mod, opts}) do
Enum.find_value(facts, fn
{{fact_mod, fact_opts}, result} ->
if mod == fact_mod &&
Keyword.drop(fact_opts, [:access_type, :ash_field_policy?]) ==
Keyword.drop(opts, [:access_type, :ash_field_policy?]) do
{:ok, result}
end
_ ->
nil
end)
|> case do
nil ->
:error
:unknown ->
:error
value ->
value
end
end
defp condition_expression(condition, authorizer) do
condition
|> List.wrap()
|> Enum.reduce({nil, authorizer}, fn
condition, {nil, authorizer} ->
case fetch_or_strict_check_fact(authorizer, condition) do
{:ok, true, authorizer} ->
{true, authorizer}
{:ok, false, authorizer} ->
{false, authorizer}
_ ->
{condition, authorizer}
end
_condition, {false, authorizer} ->
{false, authorizer}
condition, {expression, authorizer} ->
case fetch_or_strict_check_fact(authorizer, condition) do
{:ok, true, authorizer} ->
{expression, authorizer}
{:ok, false, authorizer} ->
{false, authorizer}
_ ->
{{:and, condition, expression}, authorizer}
end
end)
end
defp compile_policy_expression([], authorizer) do
{false, authorizer}
end
defp compile_policy_expression(
[%struct{condition: condition, policies: policies}],
authorizer
)
when struct in [__MODULE__, Ash.Policy.FieldPolicy] do
{condition_expression, authorizer} = condition_expression(condition, authorizer)
case condition_expression do
true ->
compile_policy_expression(policies, authorizer)
false ->
{true, authorizer}
nil ->
compile_policy_expression(policies, authorizer)
condition_expression ->
case compile_policy_expression(policies, authorizer) do
{true, authorizer} ->
{true, authorizer}
{false, authorizer} ->
{{:not, condition_expression}, authorizer}
{compiled_policies, authorizer} ->
{{:or, {:and, condition_expression, compiled_policies}, {:not, condition_expression}},
authorizer}
end
end
end
defp compile_policy_expression(
[
%{condition: condition, policies: policies, bypass?: bypass?} | rest
],
authorizer
) do
{condition_expression, authorizer} = condition_expression(condition, authorizer)
case condition_expression do
empty when empty in [nil, true] ->
if bypass? do
case compile_policy_expression(policies, authorizer) do
{true, authorizer} ->
{true, authorizer}
{false, authorizer} ->
{at_least_one_policy_expression, authorizer} =
at_least_one_policy_expression(Enum.take_while(rest, &(!&1.bypass?)), authorizer)
{rest, authorizer} = compile_policy_expression(rest, authorizer)
{{:and, rest, at_least_one_policy_expression}, authorizer}
{policy_expression, authorizer} ->
{at_least_one_policy_expression, authorizer} =
at_least_one_policy_expression(Enum.take_while(rest, &(!&1.bypass?)), authorizer)
{rest, authorizer} = compile_policy_expression(rest, authorizer)
{{:or, policy_expression, {:and, rest, at_least_one_policy_expression}}, authorizer}
end
else
case compile_policy_expression(policies, authorizer) do
{false, authorizer} ->
{false, authorizer}
{true, authorizer} ->
compile_policy_expression(rest, authorizer)
{policy_expression, authorizer} ->
case compile_policy_expression(rest, authorizer) do
{false, authorizer} ->
{false, authorizer}
{true, authorizer} ->
{policy_expression, authorizer}
{rest, authorizer} ->
{{:and, policy_expression, rest}, authorizer}
end
end
end
false ->
compile_policy_expression(rest, authorizer)
condition_expression ->
if bypass? do
{at_least_one_policy_expression, authorizer} =
at_least_one_policy_expression(Enum.take_while(rest, &(!&1.bypass?)), authorizer)
{condition_and_policy_expression, authorizer} =
case compile_policy_expression(policies, authorizer) do
{true, authorizer} ->
{condition_expression, authorizer}
{false, authorizer} ->
{false, authorizer}
{other, authorizer} ->
{{:and, condition_expression, other}, authorizer}
end
case condition_and_policy_expression do
true ->
{true, authorizer}
false ->
case compile_policy_expression(rest, authorizer) do
{true, authorizer} ->
{at_least_one_policy_expression, authorizer}
{false, authorizer} ->
{false, authorizer}
{rest, authorizer} ->
{{:and, rest, at_least_one_policy_expression}, authorizer}
end
condition_and_policy_expression ->
case compile_policy_expression(rest, authorizer) do
{true, authorizer} ->
{at_least_one_policy_expression, authorizer}
{false, authorizer} ->
{condition_and_policy_expression, authorizer}
{rest, authorizer} ->
{{:or, condition_and_policy_expression,
{:and, rest, at_least_one_policy_expression}}, authorizer}
end
end
else
case compile_policy_expression(policies, authorizer) do
{true, authorizer} ->
compile_policy_expression(rest, authorizer)
{false, authorizer} ->
{rest_expr, authorizer} = compile_policy_expression(rest, authorizer)
{{:and, {:not, condition_expression}, rest_expr}, authorizer}
{policy_expression, authorizer} ->
{rest_expr, authorizer} = compile_policy_expression(rest, authorizer)
{{:and,
{:or, {:not, condition_expression},
{:and, condition_expression, policy_expression}}, rest_expr}, authorizer}
end
end
end
end
defp compile_policy_expression(
[%{type: :authorize_if} = clause],
authorizer
) do
case fetch_or_strict_check_fact(authorizer, clause) do
{:ok, true, authorizer} ->
{true, authorizer}
{:ok, false, authorizer} ->
{false, authorizer}
{:error, authorizer} ->
{{clause.check_module, clause.check_opts}, authorizer}
end
end
defp compile_policy_expression(
[%{type: :authorize_if} = clause | rest],
authorizer
) do
case fetch_or_strict_check_fact(authorizer, clause) do
{:ok, true, authorizer} ->
{true, authorizer}
{:ok, false, authorizer} ->
compile_policy_expression(rest, authorizer)
{:error, authorizer} ->
{rest, authorizer} = compile_policy_expression(rest, authorizer)
{{:or, {clause.check_module, clause.check_opts}, rest}, authorizer}
end
end
defp compile_policy_expression(
[%{type: :authorize_unless} = clause],
authorizer
) do
case fetch_or_strict_check_fact(authorizer, clause) do
{:ok, true, authorizer} ->
{false, authorizer}
{:ok, false, authorizer} ->
{true, authorizer}
{:error, authorizer} ->
{{:not, {clause.check_module, clause.check_opts}}, authorizer}
end
end
defp compile_policy_expression(
[%{type: :authorize_unless} = clause | rest],
authorizer
) do
case fetch_or_strict_check_fact(authorizer, clause) do
{:ok, true, authorizer} ->
compile_policy_expression(rest, authorizer)
{:ok, false, authorizer} ->
{true, authorizer}
{:error, authorizer} ->
{rest, authorizer} = compile_policy_expression(rest, authorizer)
{{:or, {:not, {clause.check_module, clause.check_opts}}, rest}, authorizer}
end
end
defp compile_policy_expression([%{type: :forbid_if}], authorizer) do
{false, authorizer}
end
defp compile_policy_expression(
[%{type: :forbid_if} = clause | rest],
authorizer
) do
case fetch_or_strict_check_fact(authorizer, clause) do
{:ok, true, authorizer} ->
{false, authorizer}
{:ok, false, authorizer} ->
compile_policy_expression(rest, authorizer)
{:error, authorizer} ->
{rest, authorizer} = compile_policy_expression(rest, authorizer)
case rest do
true ->
{{:not, {clause.check_module, clause.check_opts}}, authorizer}
false ->
{false, authorizer}
rest ->
{{:and, {:not, {clause.check_module, clause.check_opts}}, rest}, authorizer}
end
end
end
defp compile_policy_expression([%{type: :forbid_unless}], authorizer) do
{false, authorizer}
end
defp compile_policy_expression(
[%{type: :forbid_unless} = clause | rest],
authorizer
) do
case fetch_or_strict_check_fact(authorizer, clause) do
{:ok, true, authorizer} ->
compile_policy_expression(rest, authorizer)
{:ok, false, authorizer} ->
{false, authorizer}
{:error, authorizer} ->
{rest, authorizer} = compile_policy_expression(rest, authorizer)
case rest do
false ->
{false, authorizer}
true ->
{{clause.check_module, clause.check_opts}, authorizer}
rest ->
{{:and, {clause.check_module, clause.check_opts}, rest}, authorizer}
end
end
end
end