security_group.cc

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/*
 * Copyright (c) 2013 Juniper Networks, Inc. All rights reserved.
 */

#include "bgp/extended-community/types.h"
#include "bgp/security_group/security_group.h"

#include <stdio.h>

#include <algorithm>


using std::copy;
using std::string;

SecurityGroup::SecurityGroup(as2_t asn, uint32_t sgid) {
    data_[0] = BgpExtendedCommunityType::Experimental;
    data_[1] = BgpExtendedCommunityExperimentalSubType::SgId;
    put_value(&data_[2], 2, asn);
    put_value(&data_[4], 4, sgid);
}

SecurityGroup::SecurityGroup(const bytes_type &data) {
    copy(data.begin(), data.end(), data_.begin());
}

as2_t SecurityGroup::as_number() const {
    if (data_[0] == BgpExtendedCommunityType::Experimental &&
            data_[1] == BgpExtendedCommunityExperimentalSubType::SgId) {
        as2_t as_number = get_value(&data_[2], 2);
        return as_number;
    }
    return 0;
}

uint32_t SecurityGroup::security_group_id() const {
    if (data_[0] == BgpExtendedCommunityType::Experimental &&
            data_[1] == BgpExtendedCommunityExperimentalSubType::SgId) {
        uint32_t num = get_value(&data_[4], 4);
        return num;
    }
    return 0;
}

bool SecurityGroup::IsGlobal() const {
    uint32_t sgid = security_group_id();
    return (sgid >= kMinGlobalId && sgid <= kMaxGlobalId);
}

string SecurityGroup::ToString() {
    char temp[50];
    snprintf(temp, sizeof(temp), "secgroup:%u:%u",
        as_number(), security_group_id());
    return string(temp);
}

SecurityGroup4ByteAs::SecurityGroup4ByteAs(as_t asn, uint32_t sgid) {
    data_[0] = BgpExtendedCommunityType::Experimental4ByteAs;
    data_[1] = BgpExtendedCommunityExperimentalSubType::SgId;
    put_value(&data_[2], 4, asn);
    put_value(&data_[6], 2, sgid);
}

SecurityGroup4ByteAs::SecurityGroup4ByteAs(const bytes_type &data) {
    copy(data.begin(), data.end(), data_.begin());
}

as_t SecurityGroup4ByteAs::as_number() const {
    if (data_[0] == BgpExtendedCommunityType::Experimental4ByteAs &&
            data_[1] == BgpExtendedCommunityExperimentalSubType::SgId) {
        as_t as_number = get_value(&data_[2], 4);
        return as_number;
    }
    return 0;
}

uint32_t SecurityGroup4ByteAs::security_group_id() const {
    if (data_[0] == BgpExtendedCommunityType::Experimental4ByteAs &&
            data_[1] == BgpExtendedCommunityExperimentalSubType::SgId) {
        uint32_t num = get_value(&data_[6], 2);
        return num;
    }
    return 0;
}

bool SecurityGroup4ByteAs::IsGlobal() const {
    uint32_t sgid = security_group_id();
    return (sgid >= kMinGlobalId && sgid <= kMaxGlobalId);
}

string SecurityGroup4ByteAs::ToString() {
    char temp[50];
    snprintf(temp, sizeof(temp), "secgroup:%u:%u",
        as_number(), security_group_id());
    return string(temp);
}