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/* Copyright (c) 2016-2019, The Tor Project, Inc. */
/* See LICENSE for licensing information */
#include "orconfig.h"
#define BUFFERS_PRIVATE
#define DIRCACHE_PRIVATE
#include "core/or/or.h"
#include "lib/err/backtrace.h"
#include "lib/container/buffers.h"
#include "app/config/config.h"
#include "core/mainloop/connection.h"
#include "feature/dircache/dircache.h"
#include "lib/log/log.h"
#include "feature/dircommon/dir_connection_st.h"
#include "test/fuzz/fuzzing.h"
static void
mock_connection_write_to_buf_impl_(const char *string, size_t len,
connection_t *conn, int compressed)
{
log_debug(LD_GENERAL, "%sResponse:\n%u\nConnection: %p\n%s\n",
compressed ? "Compressed " : "", (unsigned)len, conn, string);
}
static int
mock_directory_handle_command_get(dir_connection_t *conn,
const char *headers,
const char *body,
size_t body_len)
{
(void)conn;
log_debug(LD_GENERAL, "Method:\nGET\n");
if (headers) {
log_debug(LD_GENERAL, "Header-Length:\n%u\n", (unsigned)strlen(headers));
log_debug(LD_GENERAL, "Headers:\n%s\n", headers);
}
log_debug(LD_GENERAL, "Body-Length:\n%u\n", (unsigned)body_len);
if (body) {
log_debug(LD_GENERAL, "Body:\n%s\n", body);
}
/* Always tell the caller we succeeded */
return 0;
}
static int
mock_directory_handle_command_post(dir_connection_t *conn,
const char *headers,
const char *body,
size_t body_len)
{
(void)conn;
log_debug(LD_GENERAL, "Method:\nPOST\n");
if (headers) {
log_debug(LD_GENERAL, "Header-Length:\n%u\n", (unsigned)strlen(headers));
log_debug(LD_GENERAL, "Headers:\n%s\n", headers);
}
log_debug(LD_GENERAL, "Body-Length:\n%u\n", (unsigned)body_len);
if (body) {
log_debug(LD_GENERAL, "Body:\n%s\n", body);
}
/* Always tell the caller we succeeded */
return 0;
}
int
fuzz_init(void)
{
/* Set up fake response handler */
MOCK(connection_write_to_buf_impl_, mock_connection_write_to_buf_impl_);
/* Set up the fake handler functions */
MOCK(directory_handle_command_get, mock_directory_handle_command_get);
MOCK(directory_handle_command_post, mock_directory_handle_command_post);
return 0;
}
int
fuzz_cleanup(void)
{
UNMOCK(connection_write_to_buf_impl_);
UNMOCK(directory_handle_command_get);
UNMOCK(directory_handle_command_post);
return 0;
}
int
fuzz_main(const uint8_t *stdin_buf, size_t data_size)
{
dir_connection_t dir_conn;
/* Set up the fake connection */
memset(&dir_conn, 0, sizeof(dir_connection_t));
dir_conn.base_.type = CONN_TYPE_DIR;
/* Apparently tor sets this before directory_handle_command() is called. */
dir_conn.base_.address = tor_strdup("replace-this-address.example.com");
dir_conn.base_.inbuf = buf_new_with_data((char*)stdin_buf, data_size);
if (!dir_conn.base_.inbuf) {
log_debug(LD_GENERAL, "Zero-Length-Input\n");
goto done;
}
/* Parse the headers */
int rv = directory_handle_command(&dir_conn);
/* TODO: check the output is correctly parsed based on the input */
/* Report the parsed origin address */
if (dir_conn.base_.address) {
log_debug(LD_GENERAL, "Address:\n%s\n", dir_conn.base_.address);
}
log_debug(LD_GENERAL, "Result:\n%d\n", rv);
done:
/* Reset. */
tor_free(dir_conn.base_.address);
buf_free(dir_conn.base_.inbuf);
dir_conn.base_.inbuf = NULL;
return 0;
}
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