/*
 * Copyright 2014 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#pragma once

/*
 * Utilities used to help with testing.  Not used in production code.
 */

#include <gtest/gtest.h>

#include <keymaster/authorization_set.h>
#include <keymaster/logger.h>

std::ostream& operator<<(std::ostream& os, const keymaster_key_param_t& param);
bool operator==(const keymaster_key_param_t& a, const keymaster_key_param_t& b);
std::string hex2str(std::string);

namespace keymaster {

bool operator==(const AuthorizationSet& a, const AuthorizationSet& b);
bool operator!=(const AuthorizationSet& a, const AuthorizationSet& b);

std::ostream& operator<<(std::ostream& os, const AuthorizationSet& set);

namespace test {

template <keymaster_tag_t Tag, typename KeymasterEnum>
bool contains(const AuthorizationSet& set, TypedEnumTag<KM_ENUM, Tag, KeymasterEnum> tag,
              KeymasterEnum val) {
    int pos = set.find(tag);
    return pos != -1 && static_cast<KeymasterEnum>(set[pos].enumerated) == val;
}

template <keymaster_tag_t Tag, typename KeymasterEnum>
bool contains(const AuthorizationSet& set, TypedEnumTag<KM_ENUM_REP, Tag, KeymasterEnum> tag,
              KeymasterEnum val) {
    int pos = -1;
    while ((pos = set.find(tag, pos)) != -1)
        if (static_cast<KeymasterEnum>(set[pos].enumerated) == val) return true;
    return false;
}

template <keymaster_tag_t Tag>
bool contains(const AuthorizationSet& set, TypedTag<KM_UINT, Tag> tag, uint32_t val) {
    int pos = set.find(tag);
    return pos != -1 && set[pos].integer == val;
}

template <keymaster_tag_t Tag>
bool contains(const AuthorizationSet& set, TypedTag<KM_UINT_REP, Tag> tag, uint32_t val) {
    int pos = -1;
    while ((pos = set.find(tag, pos)) != -1)
        if (set[pos].integer == val) return true;
    return false;
}

template <keymaster_tag_t Tag>
bool contains(const AuthorizationSet& set, TypedTag<KM_ULONG, Tag> tag, uint64_t val) {
    int pos = set.find(tag);
    return pos != -1 && set[pos].long_integer == val;
}

template <keymaster_tag_t Tag>
bool contains(const AuthorizationSet& set, TypedTag<KM_BYTES, Tag> tag, const std::string& val) {
    int pos = set.find(tag);
    return pos != -1 && std::string(reinterpret_cast<const char*>(set[pos].blob.data),
                                    set[pos].blob.data_length) == val;
}

template <keymaster_tag_t Tag>
bool contains(const AuthorizationSet& set, TypedTag<KM_BIGNUM, Tag> tag, const std::string& val) {
    int pos = set.find(tag);
    return pos != -1 && std::string(reinterpret_cast<const char*>(set[pos].blob.data),
                                    set[pos].blob.data_length) == val;
}

inline bool contains(const AuthorizationSet& set, keymaster_tag_t tag) {
    return set.find(tag) != -1;
}

class StdoutLogger : public Logger {
  public:
    StdoutLogger() { set_instance(this); }

    int log_msg(LogLevel level, const char* fmt, va_list args) const {
        int output_len = 0;
        switch (level) {
        case DEBUG_LVL:
            output_len = printf("DEBUG: ");
            break;
        case INFO_LVL:
            output_len = printf("INFO: ");
            break;
        case WARNING_LVL:
            output_len = printf("WARNING: ");
            break;
        case ERROR_LVL:
            output_len = printf("ERROR: ");
            break;
        case SEVERE_LVL:
            output_len = printf("SEVERE: ");
            break;
        }

        output_len += vprintf(fmt, args);
        output_len += printf("\n");
        return output_len;
    }
};

inline std::string make_string(const uint8_t* data, size_t length) {
    return std::string(reinterpret_cast<const char*>(data), length);
}

template <size_t N> std::string make_string(const uint8_t (&a)[N]) {
    return make_string(a, N);
}

}  // namespace test
}  // namespace keymaster