1 /*
2 * Copyright (c) Meta Platforms, Inc. and affiliates.
3 *
4 * This source code is licensed under the MIT license found in the
5 * LICENSE file in the root directory of this source tree.
6 */
7
8 #include "ABI48_0_0MethodCall.h"
9
10 #include <folly/json.h>
11 #include <stdexcept>
12
13 namespace ABI48_0_0facebook {
14 namespace ABI48_0_0React {
15
16 #define REQUEST_MODULE_IDS 0
17 #define REQUEST_METHOD_IDS 1
18 #define REQUEST_PARAMSS 2
19 #define REQUEST_CALLID 3
20
21 static const char *errorPrefix = "Malformed calls from JS: ";
22
parseMethodCalls(folly::dynamic && jsonData)23 std::vector<MethodCall> parseMethodCalls(folly::dynamic &&jsonData) {
24 if (jsonData.isNull()) {
25 return {};
26 }
27
28 if (!jsonData.isArray()) {
29 throw std::invalid_argument(folly::to<std::string>(
30 errorPrefix, "input isn't array but ", jsonData.typeName()));
31 }
32
33 if (jsonData.size() < REQUEST_PARAMSS + 1) {
34 throw std::invalid_argument(
35 folly::to<std::string>(errorPrefix, "size == ", jsonData.size()));
36 }
37
38 auto &moduleIds = jsonData[REQUEST_MODULE_IDS];
39 auto &methodIds = jsonData[REQUEST_METHOD_IDS];
40 auto ¶ms = jsonData[REQUEST_PARAMSS];
41 int callId = -1;
42
43 if (!moduleIds.isArray() || !methodIds.isArray() || !params.isArray()) {
44 throw std::invalid_argument(folly::to<std::string>(
45 errorPrefix,
46 "not all fields are arrays.\n\n",
47 folly::toJson(jsonData)));
48 }
49
50 if (moduleIds.size() != methodIds.size() ||
51 moduleIds.size() != params.size()) {
52 throw std::invalid_argument(folly::to<std::string>(
53 errorPrefix,
54 "field sizes are different.\n\n",
55 folly::toJson(jsonData)));
56 }
57
58 if (jsonData.size() > REQUEST_CALLID) {
59 if (!jsonData[REQUEST_CALLID].isNumber()) {
60 throw std::invalid_argument(folly::to<std::string>(
61 errorPrefix, "invalid callId", jsonData[REQUEST_CALLID].typeName()));
62 }
63 callId = (int)jsonData[REQUEST_CALLID].asInt();
64 }
65
66 std::vector<MethodCall> methodCalls;
67 for (size_t i = 0; i < moduleIds.size(); i++) {
68 if (!params[i].isArray()) {
69 throw std::invalid_argument(folly::to<std::string>(
70 errorPrefix,
71 "method arguments isn't array but ",
72 params[i].typeName()));
73 }
74
75 methodCalls.emplace_back(
76 static_cast<int>(moduleIds[i].asInt()),
77 static_cast<int>(methodIds[i].asInt()),
78 std::move(params[i]),
79 callId);
80
81 // only increment callid if contains valid callid as callid is optional
82 callId += (callId != -1) ? 1 : 0;
83 }
84
85 return methodCalls;
86 }
87
88 } // namespace ABI48_0_0React
89 } // namespace ABI48_0_0facebook
90