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package integration_tests
import (
"fmt"
"os"
"strings"
"testing"
"github.com/ethereum-optimism/optimism/proxyd"
"github.com/stretchr/testify/require"
)
const (
notWhitelistedResponse = `{"jsonrpc":"2.0","error":{"code":-32001,"message":"rpc method is not whitelisted custom message"},"id":999}`
parseErrResponse = `{"jsonrpc":"2.0","error":{"code":-32700,"message":"parse error"},"id":null}`
invalidJSONRPCVersionResponse = `{"error":{"code":-32600,"message":"invalid JSON-RPC version"},"id":null,"jsonrpc":"2.0"}`
invalidIDResponse = `{"error":{"code":-32600,"message":"invalid ID"},"id":null,"jsonrpc":"2.0"}`
invalidMethodResponse = `{"error":{"code":-32600,"message":"no method specified"},"id":null,"jsonrpc":"2.0"}`
invalidBatchLenResponse = `{"error":{"code":-32600,"message":"must specify at least one batch call"},"id":null,"jsonrpc":"2.0"}`
)
func TestSingleRPCValidation(t *testing.T) {
goodBackend := NewMockBackend(BatchedResponseHandler(200, goodResponse))
defer goodBackend.Close()
require.NoError(t, os.Setenv("GOOD_BACKEND_RPC_URL", goodBackend.URL()))
config := ReadConfig("whitelist")
client := NewProxydClient("http://127.0.0.1:8545")
_, shutdown, err := proxyd.Start(config)
require.NoError(t, err)
defer shutdown()
tests := []struct {
name string
body string
res string
code int
}{
{
"body not JSON",
"this ain't an RPC call",
parseErrResponse,
400,
},
{
"body not RPC",
"{\"not\": \"rpc\"}",
invalidJSONRPCVersionResponse,
400,
},
{
"body missing RPC ID",
"{\"jsonrpc\": \"2.0\", \"method\": \"subtract\", \"params\": [42, 23]}",
invalidIDResponse,
400,
},
{
"body has array ID",
"{\"jsonrpc\": \"2.0\", \"method\": \"subtract\", \"params\": [42, 23], \"id\": []}",
invalidIDResponse,
400,
},
{
"body has object ID",
"{\"jsonrpc\": \"2.0\", \"method\": \"subtract\", \"params\": [42, 23], \"id\": {}}",
invalidIDResponse,
400,
},
{
"bad method",
"{\"jsonrpc\": \"2.0\", \"method\": 7, \"params\": [42, 23], \"id\": 1}",
parseErrResponse,
400,
},
{
"bad JSON-RPC",
"{\"jsonrpc\": \"1.0\", \"method\": \"subtract\", \"params\": [42, 23], \"id\": 1}",
invalidJSONRPCVersionResponse,
400,
},
{
"omitted method",
"{\"jsonrpc\": \"2.0\", \"params\": [42, 23], \"id\": 1}",
invalidMethodResponse,
400,
},
{
"not whitelisted method",
"{\"jsonrpc\": \"2.0\", \"method\": \"subtract\", \"params\": [42, 23], \"id\": 999}",
notWhitelistedResponse,
403,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
res, code, err := client.SendRequest([]byte(tt.body))
require.NoError(t, err)
RequireEqualJSON(t, []byte(tt.res), res)
require.Equal(t, tt.code, code)
require.Equal(t, 0, len(goodBackend.Requests()))
})
}
}
func TestBatchRPCValidation(t *testing.T) {
goodBackend := NewMockBackend(BatchedResponseHandler(200, goodResponse))
defer goodBackend.Close()
require.NoError(t, os.Setenv("GOOD_BACKEND_RPC_URL", goodBackend.URL()))
config := ReadConfig("whitelist")
client := NewProxydClient("http://127.0.0.1:8545")
_, shutdown, err := proxyd.Start(config)
require.NoError(t, err)
defer shutdown()
tests := []struct {
name string
body string
res string
code int
reqCount int
}{
{
"empty batch",
"[]",
invalidBatchLenResponse,
400,
0,
},
{
"bad json",
"[{,]",
parseErrResponse,
400,
0,
},
{
"not object in batch",
"[123]",
asArray(parseErrResponse),
200,
0,
},
{
"body not RPC",
"[{\"not\": \"rpc\"}]",
asArray(invalidJSONRPCVersionResponse),
200,
0,
},
{
"body missing RPC ID",
"[{\"jsonrpc\": \"2.0\", \"method\": \"subtract\", \"params\": [42, 23]}]",
asArray(invalidIDResponse),
200,
0,
},
{
"body has array ID",
"[{\"jsonrpc\": \"2.0\", \"method\": \"subtract\", \"params\": [42, 23], \"id\": []}]",
asArray(invalidIDResponse),
200,
0,
},
{
"body has object ID",
"[{\"jsonrpc\": \"2.0\", \"method\": \"subtract\", \"params\": [42, 23], \"id\": {}}]",
asArray(invalidIDResponse),
200,
0,
},
// this happens because we can't deserialize the method into a non
// string value, and it blows up the parsing for the whole request.
{
"bad method",
"[{\"error\":{\"code\":-32600,\"message\":\"invalid request\"},\"id\":null,\"jsonrpc\":\"2.0\"}]",
asArray(invalidMethodResponse),
200,
0,
},
{
"bad JSON-RPC",
"[{\"jsonrpc\": \"1.0\", \"method\": \"subtract\", \"params\": [42, 23], \"id\": 1}]",
asArray(invalidJSONRPCVersionResponse),
200,
0,
},
{
"omitted method",
"[{\"jsonrpc\": \"2.0\", \"params\": [42, 23], \"id\": 1}]",
asArray(invalidMethodResponse),
200,
0,
},
{
"not whitelisted method",
"[{\"jsonrpc\": \"2.0\", \"method\": \"subtract\", \"params\": [42, 23], \"id\": 999}]",
asArray(notWhitelistedResponse),
200,
0,
},
{
"mixed",
asArray(
"{\"jsonrpc\": \"2.0\", \"method\": \"subtract\", \"params\": [42, 23], \"id\": 999}",
"{\"jsonrpc\": \"2.0\", \"method\": \"eth_chainId\", \"params\": [], \"id\": 123}",
"123",
),
asArray(
notWhitelistedResponse,
goodResponse,
parseErrResponse,
),
200,
1,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
res, code, err := client.SendRequest([]byte(tt.body))
require.NoError(t, err)
RequireEqualJSON(t, []byte(tt.res), res)
require.Equal(t, tt.code, code)
require.Equal(t, tt.reqCount, len(goodBackend.Requests()))
})
}
}
func TestSizeLimits(t *testing.T) {
goodBackend := NewMockBackend(BatchedResponseHandler(200, goodResponse))
defer goodBackend.Close()
require.NoError(t, os.Setenv("GOOD_BACKEND_RPC_URL", goodBackend.URL()))
config := ReadConfig("size_limits")
client := NewProxydClient("http://127.0.0.1:8545")
_, shutdown, err := proxyd.Start(config)
require.NoError(t, err)
defer shutdown()
payload := strings.Repeat("barf", 1024*1024)
out, code, err := client.SendRequest([]byte(fmt.Sprintf(`{"jsonrpc": "2.0", "method": "eth_chainId", "params": [%s], "id": 1}`, payload)))
require.NoError(t, err)
require.Equal(t, `{"jsonrpc":"2.0","error":{"code":-32021,"message":"request body too large"},"id":null}`, strings.TrimSpace(string(out)))
require.Equal(t, 413, code)
// The default response is already over the size limit in size_limits.toml.
out, code, err = client.SendRequest([]byte(`{"jsonrpc": "2.0", "method": "eth_chainId", "params": [], "id": 1}`))
require.NoError(t, err)
require.Equal(t, `{"jsonrpc":"2.0","error":{"code":-32020,"message":"backend response too large"},"id":1}`, strings.TrimSpace(string(out)))
require.Equal(t, 500, code)
}
func asArray(in ...string) string {
return "[" + strings.Join(in, ",") + "]"
}