mirror of https://github.com/google/oss-fuzz.git
82 lines
1.9 KiB
C++
82 lines
1.9 KiB
C++
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// Copyright 2015 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include <stddef.h>
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#include <stdint.h>
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#include <algorithm>
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#include <array>
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#include <string>
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#include <vector>
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#include "sqlite3.h"
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static const std::array<uint8_t, 6> kBadKeyword{{'R', 'E', 'G', 'E', 'X', 'P'}};
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bool checkForBadKeyword(const uint8_t* data, size_t size) {
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auto it = std::search(
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data, data + size, kBadKeyword.begin(), kBadKeyword.end(),
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[](char c1, char c2) { return std::toupper(c1) == std::toupper(c2); });
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if (it != data + size)
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return true;
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return false;
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}
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static int Progress(void *not_used_ptr) {
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return 1;
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}
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// Entry point for LibFuzzer.
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extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
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if (size < 2)
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return 0;
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if (checkForBadKeyword(data, size))
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return 0;
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sqlite3* db;
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int return_code = sqlite3_open_v2(
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"db.db",
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&db,
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SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE | SQLITE_OPEN_MEMORY, 0);
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if (SQLITE_OK != return_code)
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return 0;
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// Use first byte as random selector for other parameters.
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int selector = data[0];
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// To cover both cases when progress_handler is used and isn't used.
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if (selector & 1)
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sqlite3_progress_handler(db, 4, &Progress, NULL);
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else
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sqlite3_progress_handler(db, 0, NULL, NULL);
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// Remove least significant bit to make further usage of selector independent.
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selector >>= 1;
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sqlite3_stmt* statement = NULL;
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int result = sqlite3_prepare_v2(db, reinterpret_cast<const char*>(data + 1),
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static_cast<int>(size - 1), &statement, NULL);
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if (result == SQLITE_OK) {
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// Use selector value to randomize number of iterations.
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for (int i = 0; i < selector; i++) {
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if (sqlite3_step(statement) != SQLITE_ROW)
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break;
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}
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sqlite3_finalize(statement);
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}
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sqlite3_close(db);
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return 0;
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}
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