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adds infrastructure to process incoming requests; fixes invalid read of ill formatted responses

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This commit is contained in:
Falk Werner 2019-03-31 18:38:22 +02:00
parent b4fac43cd1
commit 0d669fdefb
6 changed files with 47 additions and 4 deletions
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12
lib/webfuse/adapter/impl/jsonrpc/request.c
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@ -9,6 +9,18 @@ struct wf_impl_jsonrpc_request
void * user_data;
};
bool wf_impl_jsonrpc_is_request(
json_t * message)
{
json_t * id = json_object_get(message, "id");
json_t * method = json_object_get(message, "method");
json_t * params = json_object_get(message, "params");
return (json_is_integer(id) && json_is_string(method) &&
(json_is_array(params) || json_is_object(params)));
}
struct wf_impl_jsonrpc_request * wf_impl_jsonrpc_request_create(
int id,
wf_impl_jsonrpc_send_fn * send,

3
lib/webfuse/adapter/impl/jsonrpc/request.h
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@ -22,6 +22,9 @@ extern "C"
struct wf_impl_jsonrpc_request;
extern bool wf_impl_jsonrpc_is_request(
json_t * message);
extern struct wf_impl_jsonrpc_request * wf_impl_jsonrpc_request_create(
int id,
wf_impl_jsonrpc_send_fn * send,

13
lib/webfuse/adapter/impl/jsonrpc/response.c
View File

@ -1,5 +1,17 @@
#include "webfuse/adapter/impl/jsonrpc/response.h"
extern bool wf_impl_jsonrpc_is_response(
json_t * message)
{
json_t * id = json_object_get(message, "id");
json_t * err = json_object_get(message, "error");
json_t * result = json_object_get(message, "result");
return (json_is_integer(id) &&
(json_is_object(err) || (NULL != result)));
}
void wf_impl_jsonrpc_response_init(
struct wf_impl_jsonrpc_response * result,
json_t * response)
@ -12,7 +24,6 @@ void wf_impl_jsonrpc_response_init(
if ((NULL == id_holder) || (!json_is_integer(id_holder)))
{
result->status = WF_BAD_FORMAT;
json_decref(response);
return;
}

4
lib/webfuse/adapter/impl/jsonrpc/response.h
View File

@ -2,6 +2,7 @@
#define WF_ADAPTER_IMPL_JSONRPC_RESPONSE_H
#ifndef __cplusplus
#include <stdbool.h>
#include <stddef.h>
#else
#include <cstddef>
@ -22,6 +23,9 @@ struct wf_impl_jsonrpc_response
json_t * result;
};
extern bool wf_impl_jsonrpc_is_response(
json_t * message);
extern void wf_impl_jsonrpc_response_init(
struct wf_impl_jsonrpc_response * response,
json_t * message);

12
lib/webfuse/adapter/impl/session.c
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@ -3,6 +3,8 @@
#include "webfuse/core/message_queue.h"
#include "webfuse/core/message.h"
#include "webfuse/adapter/impl/jsonrpc/proxy.h"
#include "webfuse/adapter/impl/jsonrpc/request.h"
#include "webfuse/adapter/impl/jsonrpc/response.h"
#include <libwebsockets.h>
#include <stddef.h>
@ -89,7 +91,15 @@ void wf_impl_session_receive(
json_t * message = json_loadb(data, length, 0, NULL);
if (NULL != message)
{
wf_impl_jsonrpc_proxy_onresult(&session->rpc, message);
if (wf_impl_jsonrpc_is_response(message))
{
wf_impl_jsonrpc_proxy_onresult(&session->rpc, message);
}
else if (wf_impl_jsonrpc_is_request(message))
{
wf_impl_jsonrpc_server_process(session->server, message, &wf_impl_session_send, session);
}
json_decref(message);
}

7
test/test_response_parser.cc
View File

@ -9,8 +9,11 @@ static void response_parse_str(
struct wf_impl_jsonrpc_response * response)
{
json_t * message = json_loadb(buffer.c_str(), buffer.size(), 0, nullptr);
wf_impl_jsonrpc_response_init(response, message);
json_decref(message);
if (nullptr != message)
{
wf_impl_jsonrpc_response_init(response, message);
json_decref(message);
}
}
TEST(response_parser, test)