openthread/tests/unit/test_lowpan.hpp

/*
 *  Copyright (c) 2016, The OpenThread Authors.
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 *
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 *  modification, are permitted provided that the following conditions are met:
 *  1. Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *  3. Neither the name of the copyright holder nor the
 *     names of its contributors may be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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#ifndef OT_UNIT_TEST_LOWPAN_HPP_
#define OT_UNIT_TEST_LOWPAN_HPP_

#include <stdint.h>

#include "common/code_utils.hpp"
#include "instance/instance.hpp"
#include "mac/mac.hpp"
#include "net/ip6_headers.hpp"
#include "thread/lowpan.hpp"
#include "thread/thread_netif.hpp"

namespace ot {

class TestIphcVector : public Clearable<TestIphcVector>
{
public:
    struct Payload
    {
        static constexpr uint16_t kMaxLength = 512;

        uint8_t  mData[kMaxLength];
        uint16_t mLength;
    };

    /**
     * Default constructor for the object.
     */
    explicit TestIphcVector(const char *aTestName)
    {
        Clear();
        mTestName = aTestName;
    }

    /**
     * Sets long MAC source address.
     *
     * @param aAddress Pointer to the long MAC address.
     */
    void SetMacSource(const uint8_t *aAddress) { mMacAddrs.mSource.SetExtended(aAddress); }

    /**
     * Sets short MAC source address.
     *
     * @param aAddress Short MAC address.
     */
    void SetMacSource(uint16_t aAddress) { mMacAddrs.mSource.SetShort(aAddress); }

    /**
     * Sets long MAC destination address.
     *
     * @param aAddress Pointer to the long MAC address.
     */
    void SetMacDestination(const uint8_t *aAddress) { mMacAddrs.mDestination.SetExtended(aAddress); }

    /**
     * Sets short MAC destination address.
     *
     * @param aAddress Short MAC address.
     */
    void SetMacDestination(uint16_t aAddress) { mMacAddrs.mDestination.SetShort(aAddress); }

    /**
     * Gets the IPv6 header
     *
     * @returns the IPv6 header.
     */
    const Ip6::Header &GetIpHeader(void) const { return mIpHeader; }

    /**
     * Initializes IPv6 Header.
     *
     * @param aVersionClassFlow Value of the Version, Traffic class and Flow control fields.
     * @param aPayloadLength    Value of the payload length field.
     * @param aNextHeader       Value of the next header field.
     * @param aHopLimit         Value of the hop limit field.
     * @param aSource           String represents IPv6 source address.
     * @param aDestination      String represents IPv6 destination address.
     */
    void SetIpHeader(uint32_t    aVersionClassFlow,
                     uint16_t    aPayloadLength,
                     uint8_t     aNextHeader,
                     uint8_t     aHopLimit,
                     const char *aSource,
                     const char *aDestination)
    {
        mIpHeader.SetVerionTrafficClassFlow(aVersionClassFlow);
        mIpHeader.SetPayloadLength(aPayloadLength);
        mIpHeader.SetNextHeader(aNextHeader);
        mIpHeader.SetHopLimit(aHopLimit);
        IgnoreError(mIpHeader.GetSource().FromString(aSource));
        IgnoreError(mIpHeader.GetDestination().FromString(aDestination));
    }

    /**
     * Initializes IPv6 Encapsulated Header.
     *
     * @param aVersionClassFlow Value of the Version, Traffic class and Flow control fields.
     * @param aPayloadLength    Value of the payload length field.
     * @param aNextHeader       Value of the next header field.
     * @param aHopLimit         Value of the hop limit field.
     * @param aSource           String represents IPv6 source address.
     * @param aDestination      String represents IPv6 destination address.
     */
    void SetIpTunneledHeader(uint32_t    aVersionClassFlow,
                             uint16_t    aPayloadLength,
                             uint8_t     aNextHeader,
                             uint8_t     aHopLimit,
                             const char *aSource,
                             const char *aDestination)
    {
        mIpTunneledHeader.SetVerionTrafficClassFlow(aVersionClassFlow);
        mIpTunneledHeader.SetPayloadLength(aPayloadLength);
        mIpTunneledHeader.SetNextHeader(aNextHeader);
        mIpTunneledHeader.SetHopLimit(aHopLimit);
        IgnoreError(mIpTunneledHeader.GetSource().FromString(aSource));
        IgnoreError(mIpTunneledHeader.GetDestination().FromString(aDestination));
    }

    /**
     * Initializes IPv6 Extension Header.
     *
     * @param aExtHeader        Pointer to the extension header data.
     * @param aExtHeaderLength  Length of the extension header data.
     */
    void SetExtHeader(const uint8_t *aExtHeader, uint16_t aExtHeaderLength)
    {
        memcpy(mExtHeader.mData, aExtHeader, aExtHeaderLength);
        mExtHeader.mLength = aExtHeaderLength;
    }

    /**
     * Initializes UDP Header.
     *
     * @param aSource       Value of the source port.
     * @param aDestination  Value of the destination port.
     * @param aLength       Value of the length field.
     * @param aChecksum     Value of the checksum field.
     */
    void SetUDPHeader(uint16_t aSource, uint16_t aDestination, uint16_t aLength, uint16_t aChecksum)
    {
        mUdpHeader.SetSourcePort(aSource);
        mUdpHeader.SetDestinationPort(aDestination);
        mUdpHeader.SetLength(aLength);
        mUdpHeader.SetChecksum(aChecksum);
    }

    /**
     * Initializes LOWPAN_IPHC Header.
     *
     * @param aIphc        Pointer to the LOWPAN_IPHC header.
     * @param aIphcLength  Length of the LOWPAN_IPHC header.
     */
    void SetIphcHeader(const uint8_t *aIphc, uint16_t aIphcLength)
    {
        memcpy(mIphcHeader.mData, aIphc, aIphcLength);
        mIphcHeader.mLength = aIphcLength;
    }

    /**
     * Sets the expect result of the compression / decompression procedure.
     *
     * @param aError  Expected result.
     */
    void SetError(Error aError) { mError = aError; }

    /**
     * Initializes IPv6 Payload (uncompressed data).
     *
     * @param aPayload  Pointer to the payload data.
     * @param aLength   Length of the payload data.
     */
    void SetPayload(const uint8_t *aPayload, uint16_t aLength)
    {
        memcpy(mPayload.mData, aPayload, aLength);
        mPayload.mLength = aLength;
    }

    /**
     * Sets the offset from the beginning of the IPv6 header to the uncompressed
     * payload.
     *
     * @param aPayloadOffset  The offset from the beginning of the IPv6 header to the uncompressed
     *                        payload.
     */
    void SetPayloadOffset(uint16_t aPayloadOffset) { mPayloadOffset = aPayloadOffset; }

    /**
     * Returns compressed LOWPAN_IPHC frame.
     *
     * @returns The compressed stream.
     */
    void GetCompressedStream(uint8_t *aIphc, uint16_t &aIphcLength);

    /**
     * Returns message object with the uncompressed IPv6 packet.
     *
     * @returns The message object with the uncompressed IPv6 packet.
     */
    void GetUncompressedStream(Message &aMessage);

    /**
     * Returns data with the uncompressed IPv6 packet.
     *
     * @returns The data with the uncompressed IPv6 packet.
     */
    void GetUncompressedStream(uint8_t *aIp6, uint16_t &aIp6Length);

    /**
     * This fields represent uncompressed IPv6 packet.
     */
    Mac::Addresses mMacAddrs;
    Ip6::Header    mIpHeader;
    Payload        mExtHeader;
    Ip6::Header    mIpTunneledHeader;
    Ip6::UdpHeader mUdpHeader;

    /**
     * This fields represent compressed IPv6 packet.
     */
    Payload         mIphcHeader;
    uint16_t        mPayloadOffset;
    Lowpan::Context mSrcContext;
    Lowpan::Context mDstContext;

    /**
     * General purpose fields.
     */
    Payload     mPayload;
    Error       mError;
    const char *mTestName;
};

void TestLowpanDecompressRecursion(void);

} // namespace ot

#endif // OT_UNIT_TEST_LOWPAN_HPP_