eth, les, geth: implement cli-configurable global gas cap for RPC calls (#19401)

* eth, les, geth: implement cli-configurable global gas cap for RPC calls

* graphql, ethapi: place gas cap in DoCall

* ethapi: reformat log message

cmd/geth/main.go

@@ -57,7 +57,6 @@ var (
 		utils.IdentityFlag,
 		utils.UnlockedAccountFlag,
 		utils.PasswordFileFlag,
-		utils.InsecureUnlockAllowedFlag,
 		utils.BootnodesFlag,
 		utils.BootnodesV4Flag,
 		utils.BootnodesV5Flag,
@@ -136,8 +135,6 @@ var (
 		utils.VMEnableDebugFlag,
 		utils.NetworkIdFlag,
 		utils.ConstantinopleOverrideFlag,
-		utils.RPCCORSDomainFlag,
-		utils.RPCVirtualHostsFlag,
 		utils.EthStatsURLFlag,
 		utils.FakePoWFlag,
 		utils.NoCompactionFlag,
@@ -152,6 +149,8 @@ var (
 		utils.RPCEnabledFlag,
 		utils.RPCListenAddrFlag,
 		utils.RPCPortFlag,
+		utils.RPCCORSDomainFlag,
+		utils.RPCVirtualHostsFlag,
 		utils.GraphQLEnabledFlag,
 		utils.GraphQLListenAddrFlag,
 		utils.GraphQLPortFlag,
@@ -165,6 +164,8 @@ var (
 		utils.WSAllowedOriginsFlag,
 		utils.IPCDisabledFlag,
 		utils.IPCPathFlag,
+		utils.InsecureUnlockAllowedFlag,
+		utils.RPCGlobalGasCap,
 	}
 
 	whisperFlags = []cli.Flag{

cmd/geth/usage.go

@@ -158,6 +158,7 @@ var AppHelpFlagGroups = []flagGroup{
 			utils.RPCListenAddrFlag,
 			utils.RPCPortFlag,
 			utils.RPCApiFlag,
+			utils.RPCGlobalGasCap,
 			utils.WSEnabledFlag,
 			utils.WSListenAddrFlag,
 			utils.WSPortFlag,

cmd/utils/flags.go

@@ -448,6 +448,10 @@ var (
 		Name:  "allow-insecure-unlock",
 		Usage: "Allow insecure account unlocking when account-related RPCs are exposed by http",
 	}
+	RPCGlobalGasCap = cli.Uint64Flag{
+		Name:  "rpc.gascap",
+		Usage: "Sets a cap on gas that can be used in eth_call/estimateGas",
+	}
 	// Logging and debug settings
 	EthStatsURLFlag = cli.StringFlag{
 		Name:  "ethstats",
@@ -1400,6 +1404,9 @@ func SetEthConfig(ctx *cli.Context, stack *node.Node, cfg *eth.Config) {
 	if ctx.GlobalIsSet(EVMInterpreterFlag.Name) {
 		cfg.EVMInterpreter = ctx.GlobalString(EVMInterpreterFlag.Name)
 	}
+	if ctx.GlobalIsSet(RPCGlobalGasCap.Name) {
+		cfg.RPCGasCap = new(big.Int).SetUint64(ctx.GlobalUint64(RPCGlobalGasCap.Name))
+	}
 
 	// Override any default configs for hard coded networks.
 	switch {