1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
// Copyright (C) 2024-2025 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
#include <config.h>
#include <fuzz.h>
#include <log/logger_support.h>
#include <process/daemon.h>
#include <util/filesystem.h>
#include <util/encode/encode.h>
#include <cassert>
#include <string>
using namespace isc::process;
using namespace isc::util::encode;
using namespace isc::util::file;
using namespace std;
string KEA_FUZZ_DIR() {
static TemporaryDirectory TEMP_DIR = TemporaryDirectory();
return TEMP_DIR.dirName();
}
extern "C" {
bool
DoInitialization() {
LLVMFuzzerTearDown();
// Spoof the logger just enough to not get LoggingNotInitialized thrown.
// We explicitly don't want any logging during fuzzing for performance reasons.
setenv("KEA_LOCKFILE_DIR", KEA_FUZZ_DIR().c_str(), 0);
setenv("KEA_LFC_EXECUTABLE", "/bin/true", 0);
if (!getenv("DEBUG")) {
setenv("KEA_LOGGER_DESTINATION", "/dev/null", 0);
}
setenv("KEA_PIDFILE_DIR", KEA_FUZZ_DIR().c_str(), 0);
if (!isc::log::isLoggingInitialized()) {
isc::log::initLogger("fuzzer");
Daemon::loggerInit("fuzzer", /* verbose = */ false);
Daemon::setDefaultLoggerName("fuzzer");
}
return true;
}
void writeToFile(string const& file, string const& content) {
// Create the config file.
ofstream out(file, ios::out | ios::trunc);
assert(out.is_open());
out << content;
out.close();
assert(!out.is_open());
}
bool byteStreamToPacketData(uint8_t const* data, size_t size, vector<uint8_t>& byte_stream) {
string str(data, data + size);
if (!str.empty() && str.at(str.size() - 1) == '\n') {
str = str.substr(0, str.size() - 1);
}
if (str.find_first_not_of("0123456789abcdefABCDEF") != string::npos) {
return false;
}
if (str.size() % 2) {
return false;
}
decodeHex(str, byte_stream);
return true;
}
} // extern "C"
|
