mirror of
https://github.com/valitydev/osquery-1.git
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106 lines
3.1 KiB
C++
106 lines
3.1 KiB
C++
/**
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* Copyright (c) 2014-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under both the Apache 2.0 license (found in the
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* LICENSE file in the root directory of this source tree) and the GPLv2 (found
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* in the COPYING file in the root directory of this source tree).
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* You may select, at your option, one of the above-listed licenses.
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*/
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#include <string>
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#include <sqlite3.h>
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#include <osquery/utils/base64.h>
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#include <osquery/utils/chars.h>
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namespace osquery {
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enum class B64Type {
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B64_ENCODE_CONDITIONAL = 1,
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B64_ENCODE = 2,
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B64_DECODE = 3,
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};
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static void b64SqliteValue(sqlite3_context* ctx,
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int argc,
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sqlite3_value** argv,
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B64Type encode) {
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if (argc == 0) {
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return;
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}
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if (SQLITE_NULL == sqlite3_value_type(argv[0])) {
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sqlite3_result_null(ctx);
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return;
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}
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const auto* value = sqlite3_value_text(argv[0]);
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auto size = static_cast<size_t>(sqlite3_value_bytes(argv[0]));
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std::string input(reinterpret_cast<const char*>(value), size);
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std::string result;
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switch (encode) {
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case B64Type::B64_ENCODE_CONDITIONAL:
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if (isPrintable(input)) {
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result = input;
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break;
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}
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case B64Type::B64_ENCODE:
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result = base64::encode(input);
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break;
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case B64Type::B64_DECODE:
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result = base64::decode(input);
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break;
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}
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sqlite3_result_text(
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ctx, result.c_str(), static_cast<int>(result.size()), SQLITE_TRANSIENT);
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}
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static void sqliteB64ConditionalEncFunc(sqlite3_context* context,
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int argc,
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sqlite3_value** argv) {
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b64SqliteValue(context, argc, argv, B64Type::B64_ENCODE_CONDITIONAL);
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}
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static void sqliteB64EncFunc(sqlite3_context* context,
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int argc,
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sqlite3_value** argv) {
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b64SqliteValue(context, argc, argv, B64Type::B64_ENCODE);
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}
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static void sqliteB64DecFunc(sqlite3_context* context,
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int argc,
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sqlite3_value** argv) {
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b64SqliteValue(context, argc, argv, B64Type::B64_DECODE);
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}
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void registerEncodingExtensions(sqlite3* db) {
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sqlite3_create_function(db,
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"conditional_to_base64",
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1,
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SQLITE_UTF8 | SQLITE_DETERMINISTIC,
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nullptr,
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sqliteB64ConditionalEncFunc,
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nullptr,
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nullptr);
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sqlite3_create_function(db,
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"to_base64",
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1,
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SQLITE_UTF8 | SQLITE_DETERMINISTIC,
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nullptr,
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sqliteB64EncFunc,
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nullptr,
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nullptr);
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sqlite3_create_function(db,
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"from_base64",
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1,
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SQLITE_UTF8 | SQLITE_DETERMINISTIC,
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nullptr,
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sqliteB64DecFunc,
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nullptr,
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nullptr);
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}
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} // namespace osquery
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