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nadongjunnadongjun
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Add setters and tests for WireGuard protocol message fields (#1601)
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5 files changed

+382
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‎Packet++/header/WireGuardLayer.h‎

Lines changed: 96 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -117,6 +117,11 @@ namespace pcpp
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*/
118118
uint32_t getReserved() const;
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/**
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* @param reserved The reserved field to set as a An array containing the 3-byte.
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*/
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void setReserved(const std::array<uint8_t, 3>& reserved);
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/**
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* Does nothing for this layer (WireGuard layer is always last)
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*/
@@ -247,6 +252,36 @@ namespace pcpp
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*/
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std::array<uint8_t, 16> getMac2() const;
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/**
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* @param senderIndex A 32-bit integer representing the sender index.
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*/
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void setSenderIndex(uint32_t senderIndex);
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/**
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* @param initiatorEphemeral An array containing the 32-byte initiator ephemeral public key.
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*/
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void setInitiatorEphemeral(const std::array<uint8_t, 32>& initiatorEphemeral);
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/**
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* @param encryptedInitiatorStatic An array containing the 48-byte encrypted initiator's static key.
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*/
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void setEncryptedInitiatorStatic(const std::array<uint8_t, 48>& encryptedInitiatorStatic);
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/**
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* @param encryptedTimestamp An array containing the 28-byte encrypted timestamp.
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*/
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void setEncryptedTimestamp(const std::array<uint8_t, 28>& encryptedTimestamp);
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/**
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* @param mac1 An array containing the 16-byte MAC1 field.
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*/
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void setMac1(const std::array<uint8_t, 16>& mac1);
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/**
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* @param mac2 An array containing the 16-byte MAC2 field.
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*/
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void setMac2(const std::array<uint8_t, 16>& mac2);
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// implement abstract methods
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/**
@@ -347,6 +382,36 @@ namespace pcpp
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*/
348383
std::array<uint8_t, 16> getMac2() const;
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/**
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* @param senderIndex A 32-bit unsigned integer representing the sender index.
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*/
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void setSenderIndex(uint32_t senderIndex);
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/**
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* @param receiverIndex A 32-bit unsigned integer representing the receiver index.
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*/
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void setReceiverIndex(uint32_t receiverIndex);
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/**
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* @param responderEphemeral An array containing the 32-byte responder ephemeral public key.
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*/
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void setResponderEphemeral(const std::array<uint8_t, 32>& responderEphemeral);
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/**
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* @param encryptedEmpty An array containing the 16-byte encrypted empty field.
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*/
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void setEncryptedEmpty(const std::array<uint8_t, 16>& encryptedEmpty);
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/**
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* @param mac1 An array containing the 16-byte MAC1 field.
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*/
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void setMac1(const std::array<uint8_t, 16>& mac1);
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/**
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* @param mac2 An array containing the 16-byte MAC2 field.
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*/
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void setMac2(const std::array<uint8_t, 16>& mac2);
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// implement abstract methods
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352417
/**
@@ -421,6 +486,21 @@ namespace pcpp
421486
*/
422487
std::array<uint8_t, 32> getEncryptedCookie() const;
423488

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/**
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* @param receiverIndex A 32-bit unsigned integer representing the receiver index.
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*/
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void setReceiverIndex(uint32_t receiverIndex);
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/**
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* @param nonce An array containing the 24-byte nonce field.
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*/
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void setNonce(const std::array<uint8_t, 24>& nonce);
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/**
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* @param encryptedCookie An array containing the 32-byte encrypted cookie.
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*/
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void setEncryptedCookie(const std::array<uint8_t, 32>& encryptedCookie);
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// implement abstract methods
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426506
/**
@@ -497,6 +577,22 @@ namespace pcpp
497577
*/
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const uint8_t* getEncryptedData() const;
499579

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/**
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* @param receiverIndex A 32-bit unsigned integer representing the receiver index.
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*/
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void setReceiverIndex(uint32_t receiverIndex);
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/**
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* @param counter A 64-bit unsigned integer representing the counter field.
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*/
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void setCounter(uint64_t counter);
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/**
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* @param encryptedData A pointer to the encrypted data.
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* @param encryptedDataLen The length of the encrypted data.
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*/
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void setEncryptedData(const uint8_t* encryptedData, size_t encryptedDataLen);
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// implement abstract methods
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502598
/**

‎Packet++/src/WireGuardLayer.cpp‎

Lines changed: 116 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -69,6 +69,12 @@ namespace pcpp
6969
return be32toh(reservedValue);
7070
}
7171

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void WireGuardLayer::setReserved(const std::array<uint8_t, 3>& reserved)
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{
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wg_common_header* msg = reinterpret_cast<wg_common_header*>(m_Data);
75+
memcpy(msg->reserved, reserved.data(), 3);
76+
}
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7278
bool WireGuardLayer::isDataValid(const uint8_t* data, size_t dataLen)
7379
{
7480
if (dataLen < sizeof(WireGuardLayer::wg_common_header))
@@ -149,6 +155,43 @@ namespace pcpp
149155
return mac2Array;
150156
}
151157

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void WireGuardHandshakeInitiationLayer::setSenderIndex(uint32_t senderIndex)
159+
{
160+
wg_handshake_initiation* msg = reinterpret_cast<wg_handshake_initiation*>(m_Data);
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msg->senderIndex = htobe32(senderIndex);
162+
}
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void WireGuardHandshakeInitiationLayer::setInitiatorEphemeral(const std::array<uint8_t, 32>& initiatorEphemeral)
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{
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wg_handshake_initiation* msg = reinterpret_cast<wg_handshake_initiation*>(m_Data);
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memcpy(msg->initiatorEphemeral, initiatorEphemeral.data(), 32);
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}
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void WireGuardHandshakeInitiationLayer::setEncryptedInitiatorStatic(
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const std::array<uint8_t, 48>& encryptedInitiatorStatic)
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{
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wg_handshake_initiation* msg = reinterpret_cast<wg_handshake_initiation*>(m_Data);
174+
memcpy(msg->encryptedInitiatorStatic, encryptedInitiatorStatic.data(), 48);
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}
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void WireGuardHandshakeInitiationLayer::setEncryptedTimestamp(const std::array<uint8_t, 28>& encryptedTimestamp)
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{
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wg_handshake_initiation* msg = reinterpret_cast<wg_handshake_initiation*>(m_Data);
180+
memcpy(msg->encryptedTimestamp, encryptedTimestamp.data(), 28);
181+
}
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void WireGuardHandshakeInitiationLayer::setMac1(const std::array<uint8_t, 16>& mac1)
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{
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wg_handshake_initiation* msg = reinterpret_cast<wg_handshake_initiation*>(m_Data);
186+
memcpy(msg->mac1, mac1.data(), 16);
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}
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void WireGuardHandshakeInitiationLayer::setMac2(const std::array<uint8_t, 16>& mac2)
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{
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wg_handshake_initiation* msg = reinterpret_cast<wg_handshake_initiation*>(m_Data);
192+
memcpy(msg->mac2, mac2.data(), 16);
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}
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152195
// ~~~~~~~~~~~~~~~~~~~~
153196
// WireGuardHandshakeResponseLayer
154197
// ~~~~~~~~~~~~~~~~~~~~
@@ -213,6 +256,43 @@ namespace pcpp
213256
return mac2Array;
214257
}
215258

259+
void WireGuardHandshakeResponseLayer::setSenderIndex(uint32_t senderIndex)
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{
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wg_handshake_response* msg = reinterpret_cast<wg_handshake_response*>(m_Data);
263+
msg->senderIndex = htobe32(senderIndex);
264+
}
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void WireGuardHandshakeResponseLayer::setReceiverIndex(uint32_t receiverIndex)
267+
{
268+
wg_handshake_response* msg = reinterpret_cast<wg_handshake_response*>(m_Data);
269+
msg->receiverIndex = htobe32(receiverIndex);
270+
}
271+
272+
void WireGuardHandshakeResponseLayer::setResponderEphemeral(const std::array<uint8_t, 32>& responderEphemeral)
273+
{
274+
wg_handshake_response* msg = reinterpret_cast<wg_handshake_response*>(m_Data);
275+
memcpy(msg->responderEphemeral, responderEphemeral.data(), 32);
276+
}
277+
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void WireGuardHandshakeResponseLayer::setEncryptedEmpty(const std::array<uint8_t, 16>& encryptedEmpty)
279+
{
280+
wg_handshake_response* msg = reinterpret_cast<wg_handshake_response*>(m_Data);
281+
memcpy(msg->encryptedEmpty, encryptedEmpty.data(), 16);
282+
}
283+
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void WireGuardHandshakeResponseLayer::setMac1(const std::array<uint8_t, 16>& mac1)
285+
{
286+
wg_handshake_response* msg = reinterpret_cast<wg_handshake_response*>(m_Data);
287+
memcpy(msg->mac1, mac1.data(), 16);
288+
}
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void WireGuardHandshakeResponseLayer::setMac2(const std::array<uint8_t, 16>& mac2)
291+
{
292+
wg_handshake_response* msg = reinterpret_cast<wg_handshake_response*>(m_Data);
293+
memcpy(msg->mac2, mac2.data(), 16);
294+
}
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216296
// ~~~~~~~~~~~~~~~~~~~~
217297
// WireGuardCookieReplyLayer
218298
// ~~~~~~~~~~~~~~~~~~~~
@@ -255,6 +335,24 @@ namespace pcpp
255335
return encryptedCookieArray;
256336
}
257337

338+
void WireGuardCookieReplyLayer::setReceiverIndex(uint32_t receiverIndex)
339+
{
340+
wg_cookie_reply* msg = reinterpret_cast<wg_cookie_reply*>(m_Data);
341+
msg->receiverIndex = htobe32(receiverIndex);
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}
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void WireGuardCookieReplyLayer::setNonce(const std::array<uint8_t, 24>& nonce)
345+
{
346+
wg_cookie_reply* msg = reinterpret_cast<wg_cookie_reply*>(m_Data);
347+
memcpy(msg->nonce, nonce.data(), 24);
348+
}
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void WireGuardCookieReplyLayer::setEncryptedCookie(const std::array<uint8_t, 32>& encryptedCookie)
351+
{
352+
wg_cookie_reply* msg = reinterpret_cast<wg_cookie_reply*>(m_Data);
353+
memcpy(msg->encryptedCookie, encryptedCookie.data(), 32);
354+
}
355+
258356
// ~~~~~~~~~~~~~~~~~~~~
259357
// WireGuardTransportDataLayer
260358
// ~~~~~~~~~~~~~~~~~~~~
@@ -293,4 +391,22 @@ namespace pcpp
293391
return getTransportHeader()->encryptedData;
294392
}
295393

394+
void WireGuardTransportDataLayer::setReceiverIndex(uint32_t receiverIndex)
395+
{
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wg_transport_data* msg = reinterpret_cast<wg_transport_data*>(m_Data);
397+
msg->receiverIndex = htobe32(receiverIndex);
398+
}
399+
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void WireGuardTransportDataLayer::setCounter(uint64_t counter)
401+
{
402+
wg_transport_data* msg = reinterpret_cast<wg_transport_data*>(m_Data);
403+
msg->counter = htobe64(counter);
404+
}
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void WireGuardTransportDataLayer::setEncryptedData(const uint8_t* encryptedData, size_t encryptedDataLen)
407+
{
408+
wg_transport_data* msg = reinterpret_cast<wg_transport_data*>(m_Data);
409+
memcpy(msg->encryptedData, encryptedData, encryptedDataLen);
410+
}
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296412
} // namespace pcpp

‎Tests/Packet++Test/TestDefinition.h‎

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Original file line numberDiff line numberDiff line change
@@ -270,3 +270,4 @@ PTF_TEST_CASE(WireGuardHandshakeRespParsingTest);
270270
PTF_TEST_CASE(WireGuardCookieReplyParsingTest);
271271
PTF_TEST_CASE(WireGuardTransportDataParsingTest);
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PTF_TEST_CASE(WireGuardCreationTest);
273+
PTF_TEST_CASE(WireGuardEditTest);

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