/*
 * ModSecurity, http://www.modsecurity.org/
 * Copyright (c) 2015 Trustwave Holdings, Inc. (http://www.trustwave.com/)
 *
 * 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
 *
 * If any of the files related to licensing are missing or if you have any
 * other questions related to licensing please contact Trustwave Holdings, Inc.
 * directly using the email address security@modsecurity.org.
 *
 */

#include "variables/remote_user.h"

#include <time.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>

#include <iostream>
#include <string>
#include <vector>
#include <list>
#include <utility>

#include "modsecurity/transaction.h"
#include "utils/base64.h"

namespace modsecurity {
namespace Variables {


void RemoteUser::evaluateInternal(Transaction *transaction,
    std::vector<const collection::Variable *> *l) {
    size_t pos;
    std::string base64;

    std::string *header = transaction->m_collections.resolveFirst(
        "REQUEST_HEADERS:Authorization");

    if (header == NULL) {
        return;
    }

    if (header->compare(0, 6, "Basic ") == 0) {
        base64 = std::string(*header, 6, header->length());
    }

    base64 = Utils::Base64::decode(base64);

    pos = base64.find(":");
    if (pos == std::string::npos) {
        return;
    }
    base64 = std::string(base64, 0, pos);

    l->push_back(new collection::Variable("REMOTE_USER", base64));
}


}  // namespace Variables
}  // namespace modsecurity