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ied_recv.cpp
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ied_recv.cpp
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#include <array>
#include <bitset>
#include <chrono>
#include <cmath>
#include <ctime>
#include <cstdint>
#include <cstring>
#include <iomanip>
#include <iostream>
#include <map>
#include <string>
#include <vector>
#include <climits>
// For parsing SED file (in XML format)
#include "parse_sed.hpp"
// For netdevice - low-level access to Linux network devices
#include <sys/ioctl.h>
#include <net/if.h>
// For Networking/Socket and multicast
#include <arpa/inet.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <sys/types.h>
#include "udpSock.hpp"
#include "zz_diagnose.hpp"
// For IED operations/debugging
#include "ied_utils.hpp"
#define IEDUDPPORT 102
#define MAXBUFLEN 1024
// Checks if received data conforms to R-GOOSE/R-SV specifications or not
// And if so, updates GOOSE Data Records as output parameter "cbOut"
bool valid_GSE_SMV(const unsigned char (&buf)[MAXBUFLEN], const int numbytes, GooseSvData &cbOut)
{
if ( (numbytes > MAXBUFLEN) || (numbytes < 40) ) // Data received should not be greater than assigned buffer length
{ // Also, sum of length of header/footer >= 40 bytes
std::cerr << "[!] Error: Buffer length out of range\n";
return false;
}
std::string sess_prot{}; // To store Control Block's type ("GSE" or "SMV") as decoded from Session Identifier (SI)
unsigned int current_spduLen{};
unsigned int current_spduNum{};
unsigned int current_payloadLen{};
unsigned long current_appID{};
size_t signature_idx{};
unsigned char signature_len{};
// Require LI = 0x01 and TI = 0x40
if ((buf[0] == 0x01) && (buf[1] == 0x40))
{
// SI = 0xA1 for R-GOOSE
if (buf[2] == 0xA1)
{
sess_prot = "GSE";
}
// SI = 0xA2 for R-SV
else if (buf[2] == 0xA2)
{
sess_prot = "SMV";
}
else
{
std::cerr << "[!] Error: Session protocol not implemented\n";
return false;
}
}
else
{
std::cerr << "[!] Error: Application profile unknown\n";
return false;
}
if ( (buf[3] != (buf[5] + 2)) || buf[4] != 0x80 )
{
std::cerr << "[!] Error in Common Header\n";
return false;
}
if (buf[14] != 0x00 || buf[15] != 0x01)
{
std::cerr << "[!] Error: Unexpected Session Protocol Version Number\n";
return false;
}
current_spduNum = (buf[10] << 24) + (buf[11] << 16)
+ (buf[12] << 8) + buf[13];
/* Exclude initialization scenario (previous = 0)
* and exclude rollover scenario (previous = UINT_MAX, current = 0).
* Look for "reused" SPDU Number.
*/
if (!( (cbOut.prev_spduNum == 0) || (current_spduNum == 0 && cbOut.prev_spduNum == UINT_MAX) )
&& current_spduNum <= cbOut.prev_spduNum)
{
/* std::cout << "[Info] Outdated SPDU Number. Data ignored.\n"
* << "\tExpected SPDU Number: " << (cbOut.prev_spduNum + 1) << '\n'
* << "\tObserved SPDU Number: " << current_spduNum << '\n';
*/
return false;
} // No output prints if packet is out-of-order (assumes earlier packet(s) lost)
current_spduLen = (buf[6] << 24) + (buf[7] << 16)
+ (buf[8] << 8) + buf[9];
// Security Information skipped in this implementation
// Payload Length's most significant byte is at index 28
current_payloadLen = (buf[28] << 24) + (buf[29] << 16)
+ (buf[30] << 8) + buf[31];
signature_idx = 28 + current_payloadLen;
// Check Signature Block
if (buf[signature_idx] != 0x85)
{
std::cerr << "[!] Error in Signature\n";
return false;
}
/* Check index of last byte using two different computations:
* (i) SPDU Length
* (ii) Signature Length
*/
signature_len = buf[signature_idx + 1];
// Index of least sig byte of SPDU Length = 9
if ( (9 + current_spduLen) != ((signature_idx + 1) + signature_len) )
{
std::cerr << "[!] Error: Inconsistent Lengths detected\n";
return false;
}
// No verification of HMAC in this implementation
/* Check Payload */
// Pay-load type (at index 32)
if ( !( (buf[32] == 0x81 && sess_prot == "GSE")
|| (buf[32] == 0x82 && sess_prot == "SMV") ) )
{
std::cerr << "[!] Error: Payload Type inconsistent with Session Identifier\n";
return false;
}
// Tunneled packets and Management APDUs omitted in this implementation
// Simulation (at index 33)
if (buf[33] != 0)
{
std::cerr << "[!] Error: Incorrect value detected in 'Simulation' field\n";
return false;
}
// APDU Length's most significant byte is at index 36
if (signature_idx != (36 + (buf[36] << 8) + buf[37]))
{
std::cerr << "[!] Error: APDU Length in Payload\n";
return false;
}
// APPID (at indexes 34-35)
current_appID = (buf[34] << 8) + buf[35];
if (current_appID != std::stoul(cbOut.appID, nullptr, 16))
{
std::cerr << "[!] Error: Incorrect appID in Payload\n";
return false;
}
/* Check PDU
* - First byte at index 38
* - Last byte at index (signature_idx - 1)
*/
if (sess_prot == "GSE")
{
if (buf[38] != 0x61) //|| buf[39] != 0x81)
{
std::cerr << "[!] Error: GOOSE PDU Tag\n";
return false;
}
if ((38 + buf[39]) != signature_idx)
{
std::cerr << "[!] Error: GOOSE PDU Length\n";
return false;
}
// For iterating through the various Tag-Length-Value's of the GOOSE PDU
size_t tag_idx{};
size_t len_idx{};
// gocbRef (Tag at index 40 = PDU first byte's index + 3)
tag_idx = 40;
len_idx = tag_idx + 1;
assert(len_idx < signature_idx); // Ensure still 'digging' in the PDU
if (buf[tag_idx] != 0x80)
{
std::cerr << "[!] Error: goCBRef Tag\n";
return false;
}
std::string current_gocbRef{};
for (size_t i = 0; i < buf[len_idx]; i++)
{
current_gocbRef += buf[(len_idx + 1) + i];
}
if (current_gocbRef != cbOut.cbName)
{
std::cerr << "[!] Error: goCBRef mismatch\n";
return false;
}
// timeAllowedToLive
tag_idx = (len_idx + 1) + buf[len_idx]; // new tag_idx = (old len_idx + 1 = start of Value field) + old length
len_idx = tag_idx + 1;
assert(len_idx < signature_idx); // Ensure still 'digging' in the PDU
/* timeAllowedToLive not checked in this implementation */
// datSet
tag_idx = (len_idx + 1) + buf[len_idx]; // new tag_idx = (old len_idx + 1 = start of Value field) + old length
len_idx = tag_idx + 1;
assert(len_idx < signature_idx); // Ensure still 'digging' in the PDU
if (buf[tag_idx] != 0x82)
{
std::cerr << "[!] Error: GOOSE datSet Tag\n";
return false;
}
std::string current_datSet{};
for (size_t i = 0; i < buf[len_idx]; i++)
{
current_datSet += buf[(len_idx + 1) + i];
}
if (current_datSet != cbOut.datSetName)
{
std::cerr << "[!] Error: datSet mismatch\n";
return false;
}
// goID
tag_idx = (len_idx + 1) + buf[len_idx]; // new tag_idx = (old len_idx + 1 = start of Value field) + old length
len_idx = tag_idx + 1;
assert(len_idx < signature_idx); // Ensure still 'digging' in the PDU
if (buf[tag_idx] != 0x83)
{
std::cerr << "[!] Error: GOOSE goID Tag\n";
return false;
}
std::string current_goID{};
for (size_t i = 0; i < buf[len_idx]; i++)
{
current_goID += buf[(len_idx + 1) + i];
}
// Other setups may have a goID different from gocbRef
// But for this implementation, goID is checked against cbName (= gocbRef)
if (current_goID != cbOut.cbName)
{
std::cerr << "[!] Error: goID mismatch\n";
return false;
}
// timestamp
tag_idx = (len_idx + 1) + buf[len_idx]; // new tag_idx = (old len_idx + 1 = start of Value field) + old length
len_idx = tag_idx + 1;
assert(len_idx < signature_idx); // Ensure still 'digging' in the PDU
/* timestamp not checked in this implementation */
// stNum
tag_idx = (len_idx + 1) + buf[len_idx]; // new tag_idx = (old len_idx + 1 = start of Value field) + old length
len_idx = tag_idx + 1;
assert(len_idx < signature_idx); // Ensure still 'digging' in the PDU
if (buf[tag_idx] != 0x85)
{
std::cerr << "[!] Error: GOOSE stNum Tag\n";
return false;
}
unsigned int current_stNum{};
for (size_t i = 0; i < buf[len_idx]; i++)
{
current_stNum = current_stNum << 8;
current_stNum += buf[(len_idx + 1) + i];
}
// sqNum
tag_idx = (len_idx + 1) + buf[len_idx]; // new tag_idx = (old len_idx + 1 = start of Value field) + old length
len_idx = tag_idx + 1;
assert(len_idx < signature_idx); // Ensure still 'digging' in the PDU
if (buf[tag_idx] != 0x86)
{
std::cerr << "[!] Error: GOOSE sqNum Tag\n";
return false;
}
unsigned int current_sqNum{};
for (size_t i = 0; i < buf[len_idx]; i++)
{
current_sqNum = current_sqNum << 8;
current_sqNum += buf[(len_idx + 1) + i];
}
// test
tag_idx = (len_idx + 1) + buf[len_idx]; // new tag_idx = (old len_idx + 1 = start of Value field) + old length
len_idx = tag_idx + 1;
assert(len_idx < signature_idx); // Ensure still 'digging' in the PDU
if ( (buf[tag_idx] != 0x87) || (buf[len_idx] != 0x01)|| (buf[len_idx + 1] != 0x00) )
{
std::cerr << "[!] Error: GOOSE test Tag/Length/Value\n";
return false;
}
// ConfRev
tag_idx = (len_idx + 1) + buf[len_idx]; // new tag_idx = (old len_idx + 1 = start of Value field) + old length
len_idx = tag_idx + 1;
assert(len_idx < signature_idx); // Ensure still 'digging' in the PDU
if ( (buf[tag_idx] != 0x88) || (buf[len_idx] != 0x01) || (buf[len_idx + 1] != 0x01) )
{
std::cerr << "[!] Error: GOOSE ConfRev Tag/Length/Value\n";
return false;
}
// ndsCom
tag_idx = (len_idx + 1) + buf[len_idx]; // new tag_idx = (old len_idx + 1 = start of Value field) + old length
len_idx = tag_idx + 1;
assert(len_idx < signature_idx); // Ensure still 'digging' in the PDU
if ( (buf[tag_idx] != 0x89) || (buf[len_idx] != 0x01) || (buf[len_idx + 1] != 0x00) )
{
std::cerr << "[!] Error: GOOSE ndsCom Tag/Length/Value\n";
return false;
}
// numDatSetEntries
tag_idx = (len_idx + 1) + buf[len_idx]; // new tag_idx = (old len_idx + 1 = start of Value field) + old length
len_idx = tag_idx + 1;
assert(len_idx < signature_idx); // Ensure still 'digging' in the PDU
if (buf[tag_idx] != 0x8A)
{
std::cerr << "[!] Error: GOOSE numDatSetEntries Tag\n";
return false;
}
int current_numDatSetEntries{buf[len_idx + 1]};
// allData
tag_idx = (len_idx + 1) + buf[len_idx]; // new tag_idx = (old len_idx + 1 = start of Value field) + old length
len_idx = tag_idx + 1;
assert(len_idx < signature_idx); // Ensure still 'digging' in the PDU
if (buf[tag_idx] != 0xAB)
{
std::cerr << "[!] Error: GOOSE allData Tag\n";
return false;
}
std::vector<unsigned char> current_allData{};
for (size_t i = 0; i < buf[len_idx]; i++)
{
current_allData.push_back(buf[len_idx + 1 + i]);
}
/* Check:
* stNum, sqNum, numDatSetEntries & allData
*/
// Check stNum
if (current_stNum < cbOut.prev_stNum_Value)
{
std::cerr << "[!] Error: stNum\n"
<< "\tExpected stNum: >=" << (cbOut.prev_stNum_Value) << '\n'
<< "\tObserved stNum: " << current_stNum
<< "\tObserved sqNum: " << current_sqNum << '\n';
return false;
}
// At this point, current stNum >= previous stNum
if (current_stNum != cbOut.prev_stNum_Value)
{
if ( (cbOut.prev_allData_Value == current_allData)
&& (current_stNum = cbOut.prev_stNum_Value + 1) )
{
std::cerr << "[!] Error: stNum incremented but allData not changed\n";
return false;
}
}
/* At this point, current stNum > previous stNum + 1 (i.e. some packet(s) lost)
* or, current stNum == previous stNum + 1 && allData changed
* or, current stNum == previous stNum
* All these scenarios are acceptable.
*/
// Check sqNum
if (current_stNum == cbOut.prev_stNum_Value)
{
// Check if sqNum is not increasing
if (current_sqNum <= cbOut.prev_sqNum_Value && cbOut.prev_sqNum_Value != UINT_MAX)
{
std::cerr << "[Info] sqNum reused - suspected duplication.\n";
return false;
}
}
else
{
// Ensure receiver module is run before the sender module (otherwise this error will occur)
if (current_sqNum != 0)
{
std::cerr << "[!] Error: sqNum\n";
return false;
}
}
// Check numDatSetEntries/allData
// Indexes were pointing at allData Tag/Length. Reassign to point to Tag/Length of the 1st allData Value.
tag_idx = len_idx + 1;
len_idx = tag_idx + 1;
for (unsigned int i = 0; i < current_numDatSetEntries; i++)
{
tag_idx = (len_idx + 1) + buf[len_idx]; // new tag_idx = (old len_idx + 1 = start of Value field) + old length
len_idx = tag_idx + 1;
}
if (tag_idx != signature_idx)
{
std::cerr << "[!] Error: allData Value(s)\n";
return false;
}
// Update output parameter's variables
cbOut.prev_spduNum = current_spduNum;
cbOut.prev_stNum_Value = current_stNum;
cbOut.prev_sqNum_Value = current_sqNum;
cbOut.prev_numDatSetEntries = current_numDatSetEntries;
cbOut.prev_allData_Value = current_allData;
}
else if (sess_prot == "SMV")
{
/* Assume the following optional fields not present in ASDU:
* - datSet
* - refrTm
* - smpRate
* - SmpMod
*/
if (buf[38] != 0x60) //|| buf[39] != 0x80)
{
std::cerr << "[!] Error: SV PDU Tag\n";
return false;
}
if ((38 + buf[39]) != signature_idx)
{
std::cerr << "[!] Error: SV PDU Length\n";
return false;
}
if (buf[40] != 0x80 || buf[41] != 0x01 || buf[42] != 0x01)
{
std::cerr << "[!] Error: noASDU Tag/Length/Value\n";
return false;
}
if (buf[43] != 0xA2)
{
std::cerr << "[!] Error: Sequence-of-ASDUs Tag\n";
return false;
}
if ((43 + buf[44]) != signature_idx)
{
std::cerr << "[!] Error: Sequence-of-ASDUs Length\n";
return false;
}
if (buf[45] != 0x30)
{
std::cerr << "[!] Error: ASDU Tag\n";
return false;
}
if ((45 + buf[46]) != signature_idx)
{
std::cerr << "[!] Error: ASDU Length\n";
return false;
}
// For iterating through the various Tag-Length-Value's of the SV PDU
size_t tag_idx{};
size_t len_idx{};
tag_idx = 47;
len_idx = tag_idx + 1;
assert(len_idx < signature_idx); // Ensure still 'digging' in the PDU
if (buf[tag_idx] != 0x80)
{
std::cerr << "[!] Error: MsvID Tag\n";
return false;
}
std::string current_svID{};
for (size_t i = 0; i < buf[len_idx]; i++)
{
current_svID += buf[(len_idx + 1) + i];
}
if (current_svID != cbOut.cbName)
{
std::cerr << "[!] Error: MsvID mismatch\n";
return false;
}
// smpCnt
tag_idx = (len_idx + 1) + buf[len_idx]; // new tag_idx = (old len_idx + 1 = start of Value field) + old length
len_idx = tag_idx + 1;
assert(len_idx < signature_idx); // Ensure still 'digging' in the PDU
if (buf[tag_idx] != 0x82 || buf[len_idx] != 0x02)
{
std::cerr << "[!] Error: smpCnt Tag/Length\n";
return false;
}
unsigned int current_smpCnt{};
for (size_t i = 0; i < buf[len_idx]; i++)
{
current_smpCnt = current_smpCnt << 8;
current_smpCnt += buf[(len_idx + 1) + i];
}
if ((current_smpCnt < cbOut.prev_smpCnt_Value) && (cbOut.prev_smpCnt_Value != 3999))
{
std::cerr << "[!] Error: smpCnt Value reused\n";
return false;
}
// confRev
tag_idx = (len_idx + 1) + buf[len_idx]; // new tag_idx = (old len_idx + 1 = start of Value field) + old length
len_idx = tag_idx + 1;
assert(len_idx < signature_idx); // Ensure still 'digging' in the PDU
if (buf[tag_idx] != 0x83 || buf[len_idx] != 0x04)
{
std::cerr << "[!] Error: confRev Tag/Length\n";
return false;
}
unsigned int current_confRev = (buf[(len_idx + 1)] << 24) + (buf[(len_idx + 2)] << 16)
+ (buf[(len_idx + 3)] << 8) + (buf[(len_idx + 4)]);
if (current_confRev != 0x01)
{
std::cerr << "[!] Error: SV ConfRev Value\n";
return false;
}
// smpSynch
tag_idx = (len_idx + 1) + buf[len_idx]; // new tag_idx = (old len_idx + 1 = start of Value field) + old length
len_idx = tag_idx + 1;
assert(len_idx < signature_idx); // Ensure still 'digging' in the PDU
if (buf[tag_idx] != 0x85 || buf[len_idx] != 0x01 || buf[len_idx + 1] != 0x02)
{
std::cerr << "[!] Error: smpSynch Tag/Length/Value\n";
return false;
}
// Sample
tag_idx = (len_idx + 1) + buf[len_idx]; // new tag_idx = (old len_idx + 1 = start of Value field) + old length
len_idx = tag_idx + 1;
assert(len_idx < signature_idx); // Ensure still 'digging' in the PDU
if (buf[tag_idx] != 0x87)
{
std::cerr << "[!] Error: sequenceofdata Tag\n";
return false;
}
std::vector<unsigned char> current_seqOfData{};
for (size_t i = 0; i < buf[len_idx]; i++)
{
current_seqOfData.push_back(buf[len_idx + 1 + i]);
}
// timestamp
tag_idx = (len_idx + 1) + buf[len_idx]; // new tag_idx = (old len_idx + 1 = start of Value field) + old length
len_idx = tag_idx + 1;
assert(len_idx < signature_idx); // Ensure still 'digging' in the PDU
if (buf[tag_idx] != 0x89 || buf[len_idx] != 0x08)
{
std::cerr << "[!] Error: timestamp Tag/Length\n";
return false;
}
/* Checking of timestamp Value not yet included */
// Update output parameter's variables
cbOut.prev_spduNum = current_spduNum;
cbOut.prev_smpCnt_Value = current_smpCnt;
cbOut.prev_seqOfData_Value = current_seqOfData;
}
return true;
}
// HARDCODING: cbSubscribe[1] -- subscribe the 2nd control block in the vector only
int main(int argc, char *argv[])
{
if (argc != 4)
{
if (argv[0])
std::cout << "Usage: " << argv[0] << " <SED Filename> <Interface Name to be used on IED> <IED Name>" << '\n';
else
// For OS where argv[0] can end up as an empty string instead of the program's name.
std::cout << "Usage: <program name> <SED Filename> <Interface Name to be used on IED> <IED Name>" << '\n';
return 1;
}
// Specify SED Filename
// Error-checking not included (Assume sed_filename is correct and SED file is well-formed)
const char *sed_filename = argv[1];
// Specify Network Interface Name to be used on IED for inter-substation communication
const char *ifname = argv[2];
// Save IPv4 address of specified Network Interface into ifreq structure: ifr
struct ifreq ifr;
getIPv4Add(ifr, ifname);
// Specify IED name
const char *ied_name = argv[3];
// Specify filename to parse
std::vector<ControlBlock> vector_of_ctrl_blks = parse_sed(sed_filename);
// Find relevant Control Blocks to subscribe to
std::vector<GooseSvData> cbSubscribe{};
for (const ControlBlock &cb: vector_of_ctrl_blks)
{
for (const std::string &stored_ied: cb.subscribingIEDs)
{
if (ied_name == stored_ied)
{
GooseSvData tmp_goose_sv_data{};
tmp_goose_sv_data.cbName = cb.cbName;
tmp_goose_sv_data.cbType = cb.cbType;
tmp_goose_sv_data.appID = cb.appID;
tmp_goose_sv_data.multicastIP = cb.multicastIP;
if (cb.cbType == "GSE")
tmp_goose_sv_data.datSetName = cb.datSetName;
cbSubscribe.push_back(tmp_goose_sv_data);
}
}
}
if (cbSubscribe.size() == 0)
{
std::cout << argv[3] << " has no Control Block(s) to subscribe to." << '\n';
std::cout << "Please check configuration in " << argv[1] << ". Exiting program now...\n";
return 1;
}
UdpSock sock;
diagnose(sock.isGood(), "Opening datagram socket for receive");
{
// enable SO_REUSEADDR to allow multiple instances of this application to
// receive copies of the multicast datagrams.
int reuse = 1;
diagnose(setsockopt(sock(), SOL_SOCKET, SO_REUSEADDR, (char*)&reuse,
sizeof(reuse)) >= 0, "Setting SO_REUSEADDR");
}
// Bind to the proper port number with the IP address specified as INADDR_ANY
sockaddr_in localSock = {}; // initialize to all zeroes
localSock.sin_family = AF_INET;
localSock.sin_port = htons(IEDUDPPORT);
localSock.sin_addr.s_addr = INADDR_ANY;
// Note from manpage that bind returns 0 on success
diagnose(!bind(sock(), (sockaddr*)&localSock, sizeof(localSock)),
"Binding datagram socket");
// Join the multicast group on the local interface. Note that this
// IP_ADD_MEMBERSHIP option must be called for each local interface over
// which the multicast datagrams are to be received.
ip_mreq group = {}; // initialize to all zeroes
for(int i = 0; i < cbSubscribe.size(); i++)
{
// Set multicast IPv4 address in group->imr_multiaddr
inet_pton(AF_INET, cbSubscribe[i].multicastIP.c_str(), &(group.imr_multiaddr));
// NOTE: Above statement processes only the 1st subscription requirement
// (ok if assume only 1 Control Block to subscribe to)
// Set local network interface to receive multicast messages
group.imr_interface = ((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr;
diagnose(setsockopt(sock(), IPPROTO_IP, IP_ADD_MEMBERSHIP, (char*)&group,
sizeof(group)) >= 0, "Adding multicast group");
}
// For Circuit-Breaker interlocking mechanism
unsigned char ownXCBRposition{1}; // 0x01 = Close
// Keep looping to receive multicast messages
while(1)
{
// Initialization before each reading of socket
int numbytes{};
unsigned char buf[MAXBUFLEN]{};
struct sockaddr_in their_addr{};
socklen_t addr_len{sizeof their_addr};
// Read from the socket
diagnose((numbytes = recvfrom(sock(), buf, MAXBUFLEN-1 , 0,
(struct sockaddr *)&their_addr, &addr_len)) != 1,
"\nReading datagram message");
std::cout << ">> " << numbytes << " bytes received from "
<< inet_ntoa(their_addr.sin_addr) << "\n";
for(int i = 0; i < cbSubscribe.size(); i++)
{
/* Start checking UDP payload */
if (valid_GSE_SMV(buf, numbytes, cbSubscribe[i]))
{
if (cbSubscribe[i].cbType == "GSE")
{
std::cout << "Checked R-GOOSE OK\n"
<< "cbName: " << cbSubscribe[i].cbName << std::endl
<< "\tallData = { ";
for (unsigned char item : cbSubscribe[i].prev_allData_Value)
{
std::cout << std::hex << std::setfill('0') << std::setw(2) << static_cast<int>(item) << " ";
}
std::cout << "}\n" << std::dec;
std::cout << "\tstNum = " << cbSubscribe[i].prev_stNum_Value
<< "\tsqNum = " << cbSubscribe[i].prev_sqNum_Value << "\t|"
<< "\tSPDU Number (from Session Header) = " << cbSubscribe[i].prev_spduNum << '\n';
/* Specific to IED receiving Circuit Breaker position
* For Circuit Breaker Interlocking Mechanism
*/
// Check that allData just received is Boolean Tag && 1-byte Length
if (cbSubscribe[i].prev_allData_Value[0] == 0x83
&& cbSubscribe[i].prev_allData_Value[1] == 0x01)
{
// Check allData Value
if (!cbSubscribe[i].prev_allData_Value[2])
{
// Fault scenario: output printed at each cycle as long as fault remains
std::cout << "[Simulation] Circuit-Breaker interlocking mechanism\n"
<< '\t' << cbSubscribe[i].datSetName << " is Open.\n"
<< "\tOpen " << ied_name << "$XCBR as well.\n";
ownXCBRposition = 0;
}
else if (ownXCBRposition == 0)
{
// Non-fault scenario: print output only when there's a change
std::cout << "[Simulation] Circuit-Breaker interlocking mechanism\n"
<< '\t' << cbSubscribe[i].datSetName << " is Close.\n"
<< "\tClose " << ied_name << "$XCBR as well.\n";
ownXCBRposition = 1;
}
}
else
{
std::cout << "[!] GOOSE allData not recognised.\n";
}
}
else if (cbSubscribe[i].cbType == "SMV")
{
std::cout << "cbName: " << cbSubscribe[i].cbName << std::endl;
std::cout << "smpCnt: " << cbSubscribe[i].prev_smpCnt_Value << std::endl;
std::cout << "Checked R-SV OK\nsequenceofdata = { ";
std::vector<unsigned int> dataBytes;
std::vector<IEEEfloat> seqOfData;
IEEEfloat float_value;
for (unsigned char item : cbSubscribe[i].prev_seqOfData_Value)
{
long long unsigned int x = static_cast<int>(item);
for(int j = 0; j < std::bitset<8>{x}.size(); j++)
{
dataBytes.push_back(std::bitset<8>{x}[7-j]);
}
if(dataBytes.size() == 32)
{
unsigned int mantissa = convertToInt(dataBytes, 9, 31);
float_value.raw.mantissa = mantissa;
unsigned int exponent = convertToInt(dataBytes, 1, 8);
float_value.raw.exponent = exponent;
float_value.raw.sign = dataBytes[0];
//std::cout << "float_value:" << float_value.f << std::endl;
seqOfData.push_back(float_value);
dataBytes.clear();
}
//std::cout << std::hex << static_cast<int>(item) << " ";
}
for (IEEEfloat data : seqOfData)
{
std::cout << std::setprecision(8)<< data.f << " ";
}
std::cout << "}\n" << std::dec;
}
break;
}
else
{
// Ignore the packet and await the next one
continue;
}
}
}
/*
//Debugging
for (const GooseSvData &cb: cbSubscribe)
{
std::cout << '\n';
std::cout << "cbName\t: " << cb.cbName << '\n';
std::cout << "cbType\t: " << cb.cbType << '\n';
std::cout << "APP ID\t: " << cb.appID << '\n';
std::cout << "M/C IP\t: " << cb.multicastIP << '\n';
std::cout << "datSet\t: " << cb.datSetName << '\n';
std::cout << "SPDU# \t: " << cb.prev_spduNum << '\n';
std::cout << "stNum \t: " << cb.prev_stNum_Value << '\n';
std::cout << "sqNum \t: " << cb.prev_sqNum_Value << '\n';
std::cout << "numDatSetEntries: " << cb.prev_numDatSetEntries << '\n';
std::cout << '\n';
}
*/
return 0;
}