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command/jsonplan: Add sensitive value mapping data 

Similar to `after_unknown`, `before_sensitive` and `after_sensitive` are
values with similar structure to `before` and `after` which encode the
presence of sensitive values in a planned change. These should be used
to obscure sensitive values from human-readable output.

These values follow the same structure as the `before` and `after`
values, replacing sensitive values with `true`, and non-sensitive values
with `false`. Following the `after_unknown` precedent, we omit
non-sensitive `false` values for object attributes/map values, to make
serialization more compact.

One difference from `after_unknown` is that a sensitive complex value
(collection or structural type) is replaced with `true`. If the complex
value itself is sensitive, all of its contents should be obscured.
This commit is contained in:
Alisdair McDiarmid 2021-03-25 11:41:49 -04:00
parent a12c413b84
commit e27aacebf9
13 changed files with 495 additions and 27 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

106
command/jsonplan/plan.go
View File

@ -69,7 +69,21 @@ type change struct {
// values within it that won't be known until after apply.
Before json.RawMessage `json:"before,omitempty"`
After json.RawMessage `json:"after,omitempty"`
// AfterUnknown is an object value with similar structure to After, but
// with all unknown leaf values replaced with true, and all known leaf
// values omitted. This can be combined with After to reconstruct a full
// value after the action, including values which will only be known after
// apply.
AfterUnknown json.RawMessage `json:"after_unknown,omitempty"`
// BeforeSensitive and AfterSensitive are object values with similar
// structure to Before and After, but with all sensitive leaf values
// replaced with true, and all non-sensitive leaf values omitted. These
// objects should be combined with Before and After to prevent accidental
// display of sensitive values in user interfaces.
BeforeSensitive json.RawMessage `json:"before_sensitive,omitempty"`
AfterSensitive json.RawMessage `json:"after_sensitive,omitempty"`
}
type output struct {
@ -192,12 +206,18 @@ func (p *plan) marshalResourceChanges(changes *plans.Changes, schemas *terraform
}
var before, after []byte
var beforeSensitive, afterSensitive []byte
var afterUnknown cty.Value
if changeV.Before != cty.NilVal {
before, err = ctyjson.Marshal(changeV.Before, changeV.Before.Type())
if err != nil {
return err
}
bs := sensitiveAsBool(changeV.Before.MarkWithPaths(rc.BeforeValMarks))
beforeSensitive, err = ctyjson.Marshal(bs, bs.Type())
if err != nil {
return err
}
}
if changeV.After != cty.NilVal {
if changeV.After.IsWhollyKnown() {
@ -218,6 +238,11 @@ func (p *plan) marshalResourceChanges(changes *plans.Changes, schemas *terraform
}
afterUnknown = unknownAsBool(changeV.After)
}
as := sensitiveAsBool(changeV.After.MarkWithPaths(rc.AfterValMarks))
afterSensitive, err = ctyjson.Marshal(as, as.Type())
if err != nil {
return err
}
}
a, err := ctyjson.Marshal(afterUnknown, afterUnknown.Type())
@ -230,6 +255,8 @@ func (p *plan) marshalResourceChanges(changes *plans.Changes, schemas *terraform
Before: json.RawMessage(before),
After: json.RawMessage(after),
AfterUnknown: a,
BeforeSensitive: json.RawMessage(beforeSensitive),
AfterSensitive: json.RawMessage(afterSensitive),
}
if rc.DeposedKey != states.NotDeposed {
@ -392,6 +419,9 @@ func omitUnknowns(val cty.Value) cty.Value {
// tuple types and all mapping types are converted to object types, since we
// assume the result of this is just going to be serialized as JSON (and thus
// lose those distinctions) anyway.
//
// For map/object values, all known attribute values will be omitted instead of
// returning false, as this results in a more compact serialization.
func unknownAsBool(val cty.Value) cty.Value {
ty := val.Type()
switch {
@ -439,7 +469,9 @@ func unknownAsBool(val cty.Value) cty.Value {
for it.Next() {
k, v := it.Element()
vAsBool := unknownAsBool(v)
if !vAsBool.RawEquals(cty.False) { // all of the "false"s for known values for more compact serialization
// Omit all of the "false"s for known values for more compact
// serialization
if !vAsBool.RawEquals(cty.False) {
vals[k.AsString()] = unknownAsBool(v)
}
}
@ -455,6 +487,78 @@ func unknownAsBool(val cty.Value) cty.Value {
}
}
// recursively iterate through a marked cty.Value, replacing sensitive values
// with cty.True and non-sensitive values with cty.False.
//
// The result also normalizes some types: all sequence types are turned into
// tuple types and all mapping types are converted to object types, since we
// assume the result of this is just going to be serialized as JSON (and thus
// lose those distinctions) anyway.
//
// For map/object values, all non-sensitive attribute values will be omitted
// instead of returning false, as this results in a more compact serialization.
func sensitiveAsBool(val cty.Value) cty.Value {
if val.HasMark("sensitive") {
return cty.True
}
ty := val.Type()
switch {
case val.IsNull(), ty.IsPrimitiveType(), ty.Equals(cty.DynamicPseudoType):
return cty.False
case ty.IsListType() || ty.IsTupleType() || ty.IsSetType():
length := val.LengthInt()
if length == 0 {
// If there are no elements then we can't have sensitive values
return cty.EmptyTupleVal
}
vals := make([]cty.Value, 0, length)
it := val.ElementIterator()
for it.Next() {
_, v := it.Element()
vals = append(vals, sensitiveAsBool(v))
}
// The above transform may have changed the types of some of the
// elements, so we'll always use a tuple here in case we've now made
// different elements have different types. Our ultimate goal is to
// marshal to JSON anyway, and all of these sequence types are
// indistinguishable in JSON.
return cty.TupleVal(vals)
case ty.IsMapType() || ty.IsObjectType():
var length int
switch {
case ty.IsMapType():
length = val.LengthInt()
default:
length = len(val.Type().AttributeTypes())
}
if length == 0 {
// If there are no elements then we can't have sensitive values
return cty.EmptyObjectVal
}
vals := make(map[string]cty.Value)
it := val.ElementIterator()
for it.Next() {
k, v := it.Element()
s := sensitiveAsBool(v)
// Omit all of the "false"s for non-sensitive values for more
// compact serialization
if !s.RawEquals(cty.False) {
vals[k.AsString()] = s
}
}
// The above transform may have changed the types of some of the
// elements, so we'll always use an object here in case we've now made
// different elements have different types. Our ultimate goal is to
// marshal to JSON anyway, and all of these mapping types are
// indistinguishable in JSON.
return cty.ObjectVal(vals)
default:
// Should never happen, since the above should cover all types
panic(fmt.Sprintf("sensitiveAsBool cannot handle %#v", val))
}
}
func actionString(action string) []string {
switch {
case action == "NoOp":

197
command/jsonplan/plan_test.go
View File

@ -262,3 +262,200 @@ func TestUnknownAsBool(t *testing.T) {
}
}
}
func TestSensitiveAsBool(t *testing.T) {
sensitive := "sensitive"
tests := []struct {
Input cty.Value
Want cty.Value
}{
{
cty.StringVal("hello"),
cty.False,
},
{
cty.NullVal(cty.String),
cty.False,
},
{
cty.StringVal("hello").Mark(sensitive),
cty.True,
},
{
cty.NullVal(cty.String).Mark(sensitive),
cty.True,
},
{
cty.NullVal(cty.DynamicPseudoType).Mark(sensitive),
cty.True,
},
{
cty.NullVal(cty.Object(map[string]cty.Type{"test": cty.String})),
cty.False,
},
{
cty.NullVal(cty.Object(map[string]cty.Type{"test": cty.String})).Mark(sensitive),
cty.True,
},
{
cty.DynamicVal,
cty.False,
},
{
cty.DynamicVal.Mark(sensitive),
cty.True,
},
{
cty.ListValEmpty(cty.String),
cty.EmptyTupleVal,
},
{
cty.ListValEmpty(cty.String).Mark(sensitive),
cty.True,
},
{
cty.ListVal([]cty.Value{
cty.StringVal("hello"),
cty.StringVal("friend").Mark(sensitive),
}),
cty.TupleVal([]cty.Value{
cty.False,
cty.True,
}),
},
{
cty.SetValEmpty(cty.String),
cty.EmptyTupleVal,
},
{
cty.SetValEmpty(cty.String).Mark(sensitive),
cty.True,
},
{
cty.SetVal([]cty.Value{cty.StringVal("hello")}),
cty.TupleVal([]cty.Value{cty.False}),
},
{
cty.SetVal([]cty.Value{cty.StringVal("hello").Mark(sensitive)}),
cty.True,
},
{
cty.EmptyTupleVal.Mark(sensitive),
cty.True,
},
{
cty.TupleVal([]cty.Value{
cty.StringVal("hello"),
cty.StringVal("friend").Mark(sensitive),
}),
cty.TupleVal([]cty.Value{
cty.False,
cty.True,
}),
},
{
cty.MapValEmpty(cty.String),
cty.EmptyObjectVal,
},
{
cty.MapValEmpty(cty.String).Mark(sensitive),
cty.True,
},
{
cty.MapVal(map[string]cty.Value{
"greeting": cty.StringVal("hello"),
"animal": cty.StringVal("horse"),
}),
cty.EmptyObjectVal,
},
{
cty.MapVal(map[string]cty.Value{
"greeting": cty.StringVal("hello"),
"animal": cty.StringVal("horse").Mark(sensitive),
}),
cty.ObjectVal(map[string]cty.Value{
"animal": cty.True,
}),
},
{
cty.MapVal(map[string]cty.Value{
"greeting": cty.StringVal("hello"),
"animal": cty.StringVal("horse").Mark(sensitive),
}).Mark(sensitive),
cty.True,
},
{
cty.EmptyObjectVal,
cty.EmptyObjectVal,
},
{
cty.ObjectVal(map[string]cty.Value{
"greeting": cty.StringVal("hello"),
"animal": cty.StringVal("horse"),
}),
cty.EmptyObjectVal,
},
{
cty.ObjectVal(map[string]cty.Value{
"greeting": cty.StringVal("hello"),
"animal": cty.StringVal("horse").Mark(sensitive),
}),
cty.ObjectVal(map[string]cty.Value{
"animal": cty.True,
}),
},
{
cty.ObjectVal(map[string]cty.Value{
"greeting": cty.StringVal("hello"),
"animal": cty.StringVal("horse").Mark(sensitive),
}).Mark(sensitive),
cty.True,
},
{
cty.ListVal([]cty.Value{
cty.ObjectVal(map[string]cty.Value{
"a": cty.UnknownVal(cty.String),
}),
cty.ObjectVal(map[string]cty.Value{
"a": cty.StringVal("known").Mark(sensitive),
}),
}),
cty.TupleVal([]cty.Value{
cty.EmptyObjectVal,
cty.ObjectVal(map[string]cty.Value{
"a": cty.True,
}),
}),
},
{
cty.ListVal([]cty.Value{
cty.MapValEmpty(cty.String),
cty.MapVal(map[string]cty.Value{
"a": cty.StringVal("known").Mark(sensitive),
}),
cty.MapVal(map[string]cty.Value{
"a": cty.UnknownVal(cty.String),
}),
}),
cty.TupleVal([]cty.Value{
cty.EmptyObjectVal,
cty.ObjectVal(map[string]cty.Value{
"a": cty.True,
}),
cty.EmptyObjectVal,
}),
},
}
for _, test := range tests {
got := sensitiveAsBool(test.Input)
if !reflect.DeepEqual(got, test.Want) {
t.Errorf(
"wrong result\ninput: %#v\ngot: %#v\nwant: %#v",
test.Input, got, test.Want,
)
}
}
}

12
command/testdata/show-json/basic-create/output.json vendored
View File

@ -83,7 +83,9 @@
},
"after": {
"ami": "bar"
}
},
"after_sensitive": {},
"before_sensitive": false
}
},
{
@ -103,7 +105,9 @@
},
"after": {
"ami": "bar"
}
},
"after_sensitive": {},
"before_sensitive": false
}
},
{
@ -123,7 +127,9 @@
},
"after": {
"ami": "bar"
}
},
"after_sensitive": {},
"before_sensitive": false
}
}
],

8
command/testdata/show-json/basic-delete/output.json vendored
View File

@ -48,7 +48,9 @@
"ami": "bar",
"id": "placeholder"
},
"after_unknown": {}
"after_unknown": {},
"after_sensitive": {},
"before_sensitive": {}
}
},
{
@ -66,7 +68,9 @@
"id": "placeholder"
},
"after": null,
"after_unknown": {}
"after_unknown": {},
"after_sensitive": false,
"before_sensitive": {}
}
}
],

4
command/testdata/show-json/basic-update/output.json vendored
View File

@ -48,7 +48,9 @@
"ami": "bar",
"id": "placeholder"
},
"after_unknown": {}
"after_unknown": {},
"after_sensitive": {},
"before_sensitive": {}
}
}
],

4
command/testdata/show-json/module-depends-on/output.json vendored
View File

@ -35,7 +35,9 @@
},
"after_unknown": {
"id": true
}
},
"after_sensitive": {},
"before_sensitive": false
}
}
],

16
command/testdata/show-json/modules/output.json vendored
View File

@ -99,7 +99,9 @@
},
"after_unknown": {
"id": true
}
},
"after_sensitive": {},
"before_sensitive": false
}
},
{
@ -120,7 +122,9 @@
},
"after_unknown": {
"id": true
}
},
"after_sensitive": {},
"before_sensitive": false
}
},
{
@ -141,7 +145,9 @@
},
"after_unknown": {
"id": true
}
},
"after_sensitive": {},
"before_sensitive": false
}
},
{
@ -162,7 +168,9 @@
},
"after_unknown": {
"id": true
}
},
"after_sensitive": {},
"before_sensitive": false
}
}
],

8
command/testdata/show-json/multi-resource-update/output.json vendored
View File

@ -63,7 +63,9 @@
"ami": "bar",
"id": "placeholder"
},
"after_unknown": {}
"after_unknown": {},
"after_sensitive": {},
"before_sensitive": {}
}
},
{
@ -83,7 +85,9 @@
},
"after_unknown": {
"id": true
}
},
"after_sensitive": {},
"before_sensitive": false
}
}
],

4
command/testdata/show-json/nested-modules/output.json vendored
View File

@ -45,7 +45,9 @@
},
"after_unknown": {
"id": true
}
},
"after_sensitive": {},
"before_sensitive": false
}
}
],

12
command/testdata/show-json/provider-version-no-config/output.json vendored
View File

@ -83,7 +83,9 @@
},
"after": {
"ami": "bar"
}
},
"after_sensitive": {},
"before_sensitive": false
}
},
{
@ -103,7 +105,9 @@
},
"after": {
"ami": "bar"
}
},
"after_sensitive": {},
"before_sensitive": false
}
},
{
@ -123,7 +127,9 @@
},
"after": {
"ami": "bar"
}
},
"after_sensitive": {},
"before_sensitive": false
}
}
],

12
command/testdata/show-json/provider-version/output.json vendored
View File

@ -83,7 +83,9 @@
},
"after": {
"ami": "bar"
}
},
"after_sensitive": {},
"before_sensitive": false
}
},
{
@ -103,7 +105,9 @@
},
"after": {
"ami": "bar"
}
},
"after_sensitive": {},
"before_sensitive": false
}
},
{
@ -123,7 +127,9 @@
},
"after": {
"ami": "bar"
}
},
"after_sensitive": {},
"before_sensitive": false
}
}
],

13
command/testdata/show-json/sensitive-values/main.tf vendored Normal file
View File

@ -0,0 +1,13 @@
variable "test_var" {
default = "boop"
sensitive = true
}
resource "test_instance" "test" {
ami = var.test_var
}
output "test" {
value = test_instance.test.ami
sensitive = true
}

114
command/testdata/show-json/sensitive-values/output.json vendored Normal file
View File

@ -0,0 +1,114 @@
{
"format_version": "0.1",
"variables": {
"test_var": {
"value": "boop"
}
},
"planned_values": {
"outputs": {
"test": {
"sensitive": true,
"value": "boop"
}
},
"root_module": {
"resources": [
{
"address": "test_instance.test",
"mode": "managed",
"type": "test_instance",
"name": "test",
"provider_name": "registry.terraform.io/hashicorp/test",
"schema_version": 0,
"values": {
"ami": "boop"
}
}
]
}
},
"resource_changes": [
{
"address": "test_instance.test",
"mode": "managed",
"type": "test_instance",
"provider_name": "registry.terraform.io/hashicorp/test",
"name": "test",
"change": {
"actions": [
"create"
],
"before": null,
"after": {
"ami": "boop"
},
"after_unknown": {
"id": true
},
"after_sensitive": {
"ami": true
},
"before_sensitive": false
}
}
],
"output_changes": {
"test": {
"actions": [
"create"
],
"before": null,
"after": "boop",
"after_unknown": false
}
},
"prior_state": {
"format_version": "0.1",
"values": {
"outputs": {
"test": {
"sensitive": true,
"value": "boop"
}
},
"root_module": {}
}
},
"configuration": {
"root_module": {
"outputs": {
"test": {
"expression": {
"references": [
"test_instance.test"
]
},
"sensitive": true
}
},
"resources": [
{
"address": "test_instance.test",
"mode": "managed",
"type": "test_instance",
"name": "test",
"provider_config_key": "test",
"schema_version": 0,
"expressions": {
"ami": {
"references": [
"var.test_var"
]
}
}
}
],
"variables": {
"test_var": {
"default": "boop"
}
}
}
}
}