chore: add placeholders for r/system/names (#375)

* feat: add r/system/names

Signed-off-by: Manfred Touron <[email protected]>

* chore: add placeholder comment for namespace support

Signed-off-by: Manfred Touron <[email protected]>

* fixup

Signed-off-by: Manfred Touron <[email protected]>

Signed-off-by: Manfred Touron <[email protected]>

examples/gno.land/r/system/names/genesis.gno

@@ -0,0 +1,29 @@
+package names
+
+import "std"
+
+func init() {
+	// Please, do not edit this file to reserve your username, use a transaction instead.
+	var (
+		jaekwon       = std.Address("g1us8428u2a5satrlxzagqqa5m6vmuze025anjlj")
+		manfred       = std.Address("g1u7y667z64x2h7vc6fmpcprgey4ck233jaww9zq")
+		test1         = std.Address("g1jg8mtutu9khhfwc4nxmuhcpftf0pajdhfvsqf5")
+		reservedAdmin = std.Address("g100000000000000000000000000000000000000") // FIXME: create a multisig.
+		reservedNames = []string{
+			// FIXME: complete this list.
+			"gno", "gnolang", "tendermint", "cosmos", "hub", "admin",
+			"ethereum", "bitcoin",
+			// FIXME: reserve brands? then, require KYC to unlock?
+		}
+	)
+	namespaces.Set("demo", &Space{Admins: []std.Address{jaekwon, manfred}})
+	namespaces.Set("gnoland", &Space{Admins: []std.Address{jaekwon, manfred}})
+	namespaces.Set("system", &Space{Admins: []std.Address{jaekwon, manfred}})
+	namespaces.Set("jaekwon", &Space{Admins: []std.Address{jaekwon}})
+	namespaces.Set("manfred", &Space{Admins: []std.Address{manfred}})
+	namespaces.Set("test1", &Space{Admins: []std.Address{test1}})
+
+	for _, keyword := range reservedNames {
+		namespaces.Set(keyword, &Space{Admins: []std.Address{reservedAdmin}})
+	}
+}

examples/gno.land/r/system/names/names.gno

@@ -0,0 +1,60 @@
+// The realm r/system/names is used to manage namespaces on gno.land.
+package names
+
+import (
+	"std"
+
+	"gno.land/p/demo/avl"
+)
+
+// "AddPkg" will check if r/system/names exists. If yes, it will
+// inspect the realm's state and use the following variable to
+// determine if an address can publish a package or not.
+var namespaces avl.MutTree // name(string) -> Space
+
+type Space struct {
+	Admins  []std.Address
+	Editors []std.Address
+	InPause bool
+}
+
+func Register(namespace string) {
+	// TODO: input sanitization:
+	// - already exists / reserved.
+	// - min/max length, format.
+	// - fees (dynamic, based on length).
+	panic("not implemented")
+}
+
+func AddAdmin(namespace string, newAdmin std.Address) {
+	// TODO: assertIsAdmin()
+	panic("not implemented")
+}
+
+func RemoveAdmin(namespace string, newAdmin std.Address) {
+	// TODO: assertIsAdmin()
+	// TODO: check if self.
+	panic("not implemented")
+}
+
+func AddEditor(namespace string, newAdmin std.Address) {
+	// TODO: assertIsAdmin()
+	panic("not implemented")
+}
+
+func RemoveEditor(namespace string, newAdmin std.Address) {
+	// TODO: assertIsAdmin()
+	// TODO: check if self.
+	panic("not implemented")
+}
+
+func SetInPause(namespace string, state bool) {
+	// TODO: assertIsAdmin()
+	panic("not implemented")
+}
+
+func Render(path string) string {
+	// TODO: by namespace.
+	// TODO: by address.
+	return "not implemented"
+}

pkgs/sdk/vm/keeper.go

@@ -139,6 +139,14 @@ func (vm *VMKeeper) AddPackage(ctx sdk.Context, msg MsgAddPackage) error {
 	}
 	// Pay deposit from creator.
 	pkgAddr := gno.DerivePkgAddr(pkgPath)
+
+	// TODO: ACLs.
+	// - if r/system/names does not exists -> skip validation.
+	// - loads r/system/names data state.
+	// - lookup r/system/names.namespaces for `{r,p}/NAMES`.
+	// - check if caller is in Admins or Editors.
+	// - check if namespace is not in pause.
+
 	err := vm.bank.SendCoins(ctx, creator, pkgAddr, deposit)
 	if err != nil {
 		return err