change DefaultParams on the host to allow all messages ("*")

CHANGELOG.md

@@ -96,6 +96,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 * (apps/27-interchain-accounts) [\#2157](https://github.com/cosmos/ibc-go/pull/2157) Adding `IsMiddlewareEnabled` functionality to enforce calls to ICS27 msg server to *not* route to the underlying application.
 * (apps/27-interchain-accounts) [\#2177](https://github.com/cosmos/ibc-go/pull/2177) Adding `IsMiddlewareEnabled` flag to interchain accounts `ActiveChannel` genesis type.
 * (apps/27-interchain-accounts) [\#2140](https://github.com/cosmos/ibc-go/pull/2140) Adding migration handler to ICS27 `controller` submodule to assert ownership of channel capabilities and set middleware enabled flag for existing channels. The ICS27 module consensus version has been bumped from 1 to 2.
+* (apps/27-interchain-accounts) [\#2290](https://github.com/cosmos/ibc-go/pull/2290) Changed `DefaultParams` function in `host` submodule to allow all messages by default. Defined a constant named `AllowAllHostMsgs` for `host` module to keep wildcard "*" string which allows all messages.     
 
 ### Features
 

modules/apps/27-interchain-accounts/host/types/keys.go

@@ -10,12 +10,15 @@ const (
 
 	// StoreKey is the store key string for the interchain accounts host module
 	StoreKey = SubModuleName
+
+	// AllowAllHostMsgs holds the string key that allows all message types on interchain accounts host module
+	AllowAllHostMsgs = "*"
 )
 
 // ContainsMsgType returns true if the sdk.Msg TypeURL is present in allowMsgs, otherwise false
 func ContainsMsgType(allowMsgs []string, msg sdk.Msg) bool {
 	// check that wildcard * option for allowing all message types is the only string in the array, if so, return true
-	if len(allowMsgs) == 1 && allowMsgs[0] == "*" {
+	if len(allowMsgs) == 1 && allowMsgs[0] == AllowAllHostMsgs {
 		return true
 	}
 

modules/apps/27-interchain-accounts/host/types/params.go

@@ -34,7 +34,7 @@ func NewParams(enableHost bool, allowMsgs []string) Params {
 
 // DefaultParams is the default parameter configuration for the host submodule
 func DefaultParams() Params {
-	return NewParams(DefaultHostEnabled, nil)
+	return NewParams(DefaultHostEnabled, []string{AllowAllHostMsgs})
 }
 
 // Validate validates all host submodule parameters