/* Copyright 2023 Google LLC

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.

*/

#include <stdint.h>

#include <stdlib.h>

#include "lcms2.h"

wchar_t* generateWideString(const char* characters, const uint8_t *data){

    if (!characters){

        return NULL;

    }

    char stringToWide[10];

    for (int i = 0; i < 9; i++){

        stringToWide[i] = characters[data[i] % 95];

    }

    stringToWide[9] = '\0';

    int requiredSize = mbstowcs(NULL, stringToWide, 0);

    if (requiredSize < 0) return NULL;

    wchar_t* wideString = (wchar_t *)malloc((requiredSize + 1) * sizeof(wchar_t));

    if (!wideString) return NULL;

    mbstowcs(wideString, stringToWide, requiredSize + 1);

    return wideString;

}

int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {

    if (size < 27){

        return 0;

    }

    cmsContext context = cmsCreateContext(NULL, (void *)data);

    if (!context) {

        return 0;

    }

    // Create a Dictionary handle

    cmsHANDLE hDict = cmsDictAlloc(context);

    if (!hDict) {

        cmsDeleteContext(context);

        return 0;

    }

    cmsMLU *mlu = cmsMLUalloc(context, 0);

    if (!mlu) {

        cmsDictFree(hDict);

        cmsDeleteContext(context);

        return 0;

    }

    char* characters = " !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~";

    wchar_t* wideString = generateWideString(characters, data);

    if (!wideString) {

        cmsMLUfree(mlu);

        cmsDictFree(hDict);

        cmsDeleteContext(context);

        return 0;

    }

    cmsMLUsetWide(mlu, "en", "US", wideString);

    free(wideString);

    char ObtainedLanguage[3], ObtainedCountry[3];

    ObtainedLanguage[0] = characters[*(data+1) % 95];

    ObtainedLanguage[1] = characters[*(data+2) % 95];

    ObtainedLanguage[2] = characters[*(data) % 95];

    ObtainedCountry[0] = characters[*(data+2) % 95];

    ObtainedCountry[1] = characters[*data % 95];

    ObtainedCountry[2] = characters[*(data+1) % 95];

    cmsMLUgetTranslation(mlu, "en", "US",ObtainedLanguage,ObtainedCountry);

    cmsMLUtranslationsCount(mlu);

    cmsMLUtranslationsCodes(mlu, *((uint32_t *)data), ObtainedLanguage, ObtainedCountry);

    cmsMLU* displayName = mlu;

    cmsMLU* displayValue = mlu;

    //cmsDictAddEntry

    wchar_t* name = generateWideString(characters, data + 9);

    wchar_t* value = generateWideString(characters, data + 18);

    if (name && value) {

        cmsDictAddEntry(hDict, name, value, displayName, displayValue);

    }

    free(name);

    free(value);

    //cmsDictDup

    cmsHANDLE ResultDictDup = cmsDictDup(hDict);

    if (ResultDictDup) {

        cmsDictFree(ResultDictDup);

    }

    // Iterate over the Dictionary entries

    const cmsDICTentry* entry = cmsDictGetEntryList(hDict);

    cmsDictNextEntry(entry);

    cmsMLUfree(mlu);

    cmsDictFree(hDict);

    cmsDeleteContext(context);

    return 0;

}