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3.29.3
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3.29.1
3.29.0
3.28.0
3.27.8
3.27.7
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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
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3.5.6
3.5.5
3.5.4
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3.5.1
3.5.0
3.4.74
retired
3.4.73
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3.4.62
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3.4.52
3.4.51
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3.4.49
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3.4.46
3.4.45
3.4.44
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3.4.41
3.4.40
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3.4.11
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3.4.5
3.4.4
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3.1.8
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3.1.5
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3.1.1
3.1.0
3.0.16
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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
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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
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3.0.0-rc.5
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3.0.0-rc.1
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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
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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
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2.5.0-rc.3
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2.5.0-rc.1
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2.4.5
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2.4.1
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2.0.0-pre.0
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1.53.0
1.52.0-rc.22
1.52.0-rc.21
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1.52.0-rc.19
1.52.0-rc.18
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1.52.0-rc.8
1.52.0-rc.7
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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
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1.51.0
1.50.21
1.50.20
1.50.19
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1.50.13
1.50.12
1.50.11
1.50.10
1.50.9
1.50.8
1.50.7
1.50.6
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1.50.4
1.50.3
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1.50.1
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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
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1.45.0-rc8
1.45.0-rc7
1.45.0-rc6
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1.45.0-rc4
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1.45.0-rc20
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1.45.0-rc18
1.45.0-rc17
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1.45.0-rc15
1.45.0-rc14
1.45.0-rc13
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1.45.0-rc10
1.45.0-rc1
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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
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0.1.1
0.1.0
A declarative, extensible framework for building Elixir applications.
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This version has known vulnerabilities.
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lib/ash/policy/policy.ex
defmodule Ash.Policy.Policy do
@moduledoc false
# 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__{}
def solve(authorizer) do
authorizer.policies
|> build_requirements_expression(authorizer.facts)
|> Ash.Policy.SatSolver.solve()
end
defp build_requirements_expression(policies, facts) do
at_least_one_policy_expression = at_least_one_policy_expression(policies, facts)
policy_expression =
{:and, at_least_one_policy_expression, compile_policy_expression(policies, facts)}
facts_expression = Ash.Policy.SatSolver.facts_to_statement(Map.drop(facts, [true, false]))
if facts_expression do
{:and, facts_expression, policy_expression}
else
policy_expression
end
end
def at_least_one_policy_expression(policies, facts) do
policies
|> Enum.map(&condition_expression(&1.condition, facts))
|> Enum.filter(& &1)
|> Enum.reduce(false, fn condition, acc ->
{:or, condition, acc}
end)
end
def fetch_fact(facts, %{check_module: mod, check_opts: opts}) do
fetch_fact(facts, {mod, opts})
end
def fetch_fact(facts, {mod, opts}) do
# TODO: this is slow, and we should figure out a better way to access facts indiscriminate of access type,
# which my necessity must be stored with the fact (as facts create scenarios)
# Eventually we may just want to track two separate maps of facts, one with access type and one without
Enum.find_value(facts, fn
{{fact_mod, fact_opts}, result} ->
if mod == fact_mod &&
Keyword.delete(fact_opts, :access_type) ==
Keyword.delete(opts, :access_type) do
{:ok, result}
end
_ ->
nil
end)
|> case do
nil ->
:error
value ->
value
end
end
defp condition_expression(condition, facts) do
condition
|> List.wrap()
|> Enum.reduce(nil, fn
condition, nil ->
case fetch_fact(facts, condition) do
{:ok, true} ->
true
{:ok, false} ->
false
_ ->
condition
end
_condition, false ->
false
condition, expression ->
case fetch_fact(facts, condition) do
{:ok, true} ->
expression
{:ok, false} ->
false
_ ->
{:and, condition, expression}
end
end)
end
defp compile_policy_expression(policies, facts)
defp compile_policy_expression([], _facts) do
false
end
defp compile_policy_expression(
[%__MODULE__{condition: condition, policies: policies}],
facts
) do
compiled_policies = compile_policy_expression(policies, facts)
condition_expression = condition_expression(condition, facts)
case condition_expression do
true ->
compiled_policies
false ->
true
nil ->
compiled_policies
condition_expression ->
{:and, condition_expression, compiled_policies}
end
end
defp compile_policy_expression(
[
%__MODULE__{condition: condition, policies: policies, bypass?: bypass?} | rest
],
facts
) do
condition_expression = condition_expression(condition, facts)
case condition_expression do
true ->
if bypass? do
{:or, compile_policy_expression(policies, facts),
{:and, compile_policy_expression(rest, facts),
at_least_one_policy_expression(Enum.take_while(rest, &(!&1.bypass?)), facts)}}
else
{:and, compile_policy_expression(policies, facts),
compile_policy_expression(rest, facts)}
end
false ->
compile_policy_expression(rest, facts)
nil ->
if bypass? do
{:or, compile_policy_expression(policies, facts),
{:and, compile_policy_expression(rest, facts),
at_least_one_policy_expression(Enum.take_while(rest, &(!&1.bypass?)), facts)}}
else
{:and, compile_policy_expression(policies, facts),
compile_policy_expression(rest, facts)}
end
condition_expression ->
if bypass? do
{:or, {:and, condition_expression, compile_policy_expression(policies, facts)},
{:and, compile_policy_expression(rest, facts),
at_least_one_policy_expression(Enum.take_while(rest, &(!&1.bypass?)), facts)}}
else
{:or, {:and, condition_expression, compile_policy_expression(policies, facts)},
{:and, {:not, condition_expression}, compile_policy_expression(rest, facts)}}
end
end
end
defp compile_policy_expression(
[%{type: :authorize_if} = clause],
facts
) do
case fetch_fact(facts, clause) do
{:ok, true} ->
true
{:ok, false} ->
false
:error ->
{clause.check_module, clause.check_opts}
end
end
defp compile_policy_expression(
[%{type: :authorize_if} = clause | rest],
facts
) do
case fetch_fact(facts, clause) do
{:ok, true} ->
true
{:ok, false} ->
compile_policy_expression(rest, facts)
:error ->
{:or, {clause.check_module, clause.check_opts}, compile_policy_expression(rest, facts)}
end
end
defp compile_policy_expression(
[%{type: :authorize_unless} = clause],
facts
) do
case fetch_fact(facts, clause) do
{:ok, true} ->
false
{:ok, false} ->
true
:error ->
{clause.check_module, clause.check_opts}
end
end
defp compile_policy_expression(
[%{type: :authorize_unless} = clause | rest],
facts
) do
case fetch_fact(facts, clause) do
{:ok, true} ->
compile_policy_expression(rest, facts)
{:ok, false} ->
true
:error ->
{:or, {clause.check_module, clause.check_opts}, compile_policy_expression(rest, facts)}
end
end
defp compile_policy_expression([%{type: :forbid_if}], _facts) do
false
end
defp compile_policy_expression(
[%{type: :forbid_if} = clause | rest],
facts
) do
case fetch_fact(facts, clause) do
{:ok, true} ->
false
{:ok, false} ->
compile_policy_expression(rest, facts)
:error ->
{:and, {:not, {clause.check_module, clause.check_opts}},
compile_policy_expression(rest, facts)}
end
end
defp compile_policy_expression([%{type: :forbid_unless}], _facts) do
false
end
defp compile_policy_expression(
[%{type: :forbid_unless} = clause | rest],
facts
) do
case fetch_fact(facts, clause) do
{:ok, true} ->
compile_policy_expression(rest, facts)
{:ok, false} ->
false
:error ->
{:and, {clause.check_module, clause.check_opts}, compile_policy_expression(rest, facts)}
end
end
end