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Allow feegrants from marker accounts again. (#2111)
* Write a unit test (that currently fails) that attempts to use a feegrant for a MsgSend. * In the antehandler stuff, if a feegrant is looked for and used, make note of that in the context where we're collecting fees. Then, in the marker send restriction, if coming from a marker, check for that feegrant flag to bypass checking that there's a transfer agent with withdraw permissions. * Unit tests on the new context helpers. * Add some test cases to the SendRestrictionFn tests to hit the scenario where there's a feegrant in use. * Put a better comment on the feegrant bypass. * Fix imports in the send_restrictions. * Delete an unused constant: AddressHasAccessKey = "address_has_access" * Final touches on that updated comment. * Add changelog entry. * Update the flowchart that covers this bug. * Remove the entry from CHANGELOG.md and add a new unreleased entry (the new way).
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1 @@ | ||
| * Allow marker funds to be used via feegrant again [#2110](https://github.com/provenance-io/provenance/issues/2110). |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,36 @@ | ||
| package sdk | ||
|
|
||
| import ( | ||
| "context" | ||
|
|
||
| sdk "github.com/cosmos/cosmos-sdk/types" | ||
| ) | ||
|
|
||
| var ( | ||
| feeGranteeKey = "pio-feegrant-in-use" | ||
| ) | ||
|
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| // WithFeeGrantInUse returns a new context that will indicate that a feegrant is being used. | ||
| func WithFeeGrantInUse[C context.Context](ctx C) C { | ||
| sdkCtx := sdk.UnwrapSDKContext(ctx) | ||
| sdkCtx = sdkCtx.WithValue(feeGranteeKey, true) | ||
| return context.Context(sdkCtx).(C) | ||
| } | ||
|
|
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| // WithoutFeeGrantInUse returns a new context that will indicate that a feegrant is NOT being used. | ||
| func WithoutFeeGrantInUse[C context.Context](ctx C) C { | ||
| sdkCtx := sdk.UnwrapSDKContext(ctx) | ||
| sdkCtx = sdkCtx.WithValue(feeGranteeKey, false) | ||
| return context.Context(sdkCtx).(C) | ||
| } | ||
|
|
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| // HasFeeGrantInUse checks the context to see if the a feegrant is being used. | ||
| func HasFeeGrantInUse[C context.Context](ctx C) bool { | ||
| sdkCtx := sdk.UnwrapSDKContext(ctx) | ||
| bypassValue := sdkCtx.Value(feeGranteeKey) | ||
| if bypassValue == nil { | ||
| return false | ||
| } | ||
| bypass, isBool := bypassValue.(bool) | ||
| return isBool && bypass | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,73 @@ | ||
| package sdk | ||
|
|
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| import ( | ||
| "testing" | ||
|
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| cmtproto "github.com/cometbft/cometbft/proto/tendermint/types" | ||
| "github.com/stretchr/testify/assert" | ||
|
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| sdk "github.com/cosmos/cosmos-sdk/types" | ||
| ) | ||
|
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| func TestFeeGrantContextFuncs(t *testing.T) { | ||
| tests := []struct { | ||
| name string | ||
| ctx sdk.Context | ||
| exp bool | ||
| }{ | ||
| { | ||
| name: "brand new mostly empty context", | ||
| ctx: sdk.NewContext(nil, cmtproto.Header{}, false, nil), | ||
| exp: false, | ||
| }, | ||
| { | ||
| name: "context with fee grant in use", | ||
| ctx: WithFeeGrantInUse(sdk.NewContext(nil, cmtproto.Header{}, false, nil)), | ||
| exp: true, | ||
| }, | ||
| { | ||
| name: "context with fee grant in use on one that originally was without it", | ||
| ctx: WithFeeGrantInUse(WithoutFeeGrantInUse(sdk.NewContext(nil, cmtproto.Header{}, false, nil))), | ||
| exp: true, | ||
| }, | ||
| { | ||
| name: "context with fee grant in use twice", | ||
| ctx: WithFeeGrantInUse(WithFeeGrantInUse(sdk.NewContext(nil, cmtproto.Header{}, false, nil))), | ||
| exp: true, | ||
| }, | ||
| { | ||
| name: "context without fee grant in use", | ||
| ctx: WithoutFeeGrantInUse(sdk.NewContext(nil, cmtproto.Header{}, false, nil)), | ||
| exp: false, | ||
| }, | ||
| { | ||
| name: "context without fee grant in use on one that originally had it", | ||
| ctx: WithoutFeeGrantInUse(WithFeeGrantInUse(sdk.NewContext(nil, cmtproto.Header{}, false, nil))), | ||
| exp: false, | ||
| }, | ||
| { | ||
| name: "context without fee grant in use twice", | ||
| ctx: WithoutFeeGrantInUse(WithoutFeeGrantInUse(sdk.NewContext(nil, cmtproto.Header{}, false, nil))), | ||
| exp: false, | ||
| }, | ||
| } | ||
|
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| for _, tc := range tests { | ||
| t.Run(tc.name, func(t *testing.T) { | ||
| actual := HasFeeGrantInUse(tc.ctx) | ||
| assert.Equal(t, tc.exp, actual, "HasFeeGrantInUse") | ||
| }) | ||
| } | ||
| } | ||
|
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| func TestFeeGrantInUseFuncsDoNotModifyProvided(t *testing.T) { | ||
| origCtx := sdk.NewContext(nil, cmtproto.Header{}, false, nil) | ||
| assert.False(t, HasFeeGrantInUse(origCtx), "HasFeeGrantInUse(origCtx)") | ||
| afterWith := WithFeeGrantInUse(origCtx) | ||
| assert.True(t, HasFeeGrantInUse(afterWith), "HasFeeGrantInUse(afterWith)") | ||
| assert.False(t, HasFeeGrantInUse(origCtx), "HasFeeGrantInUse(origCtx) after giving it to WithFeeGrantInUse") | ||
| afterWithout := WithoutFeeGrantInUse(afterWith) | ||
| assert.False(t, HasFeeGrantInUse(afterWithout), "HasFeeGrantInUse(afterWithout)") | ||
| assert.True(t, HasFeeGrantInUse(afterWith), "HasFeeGrantInUse(afterWith) after giving it to WithoutFeeGrantInUse") | ||
| assert.False(t, HasFeeGrantInUse(origCtx), "HasFeeGrantInUse(origCtx) after giving afterWith to WithoutFeeGrantInUse") | ||
| } |
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