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Use proper random numbers for the SSRC in the Kenwood network protocol.

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This commit is contained in:
Jonathan Naylor 2020-07-01 13:31:11 +01:00
parent f16a7be674
commit 822883f40f
10 changed files with 25 additions and 69 deletions
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10
NXDNGateway/KenwoodNetwork.cpp
View File

@ -55,7 +55,8 @@ m_rtcpTimer(1000U, 0U, 200U),
m_hangTimer(1000U, 5U),
m_hangType(0U),
m_hangSrc(0U),
m_hangDst(0U)
m_hangDst(0U),
m_random()
{
assert(localPort > 0U);
assert(!rptAddress.empty());
@ -64,6 +65,10 @@ m_hangDst(0U)
m_sacch = new unsigned char[10U];
m_address = CUDPSocket::lookup(rptAddress);
std::random_device rd;
std::mt19937 mt(rd());
m_random = mt;
}
CKenwoodNetwork::~CKenwoodNetwork()
@ -86,7 +91,8 @@ bool CKenwoodNetwork::open()
return false;
}
m_ssrc = m_rtpSocket.getLocalAddress();
std::uniform_int_distribution<unsigned int> dist(0x00000001, 0xfffffffe);
m_ssrc = dist(m_random);
return true;
}

2
NXDNGateway/KenwoodNetwork.h
View File

@ -25,6 +25,7 @@
#include <cstdint>
#include <string>
#include <random>
class CKenwoodNetwork : public IRptNetwork {
public:
@ -64,6 +65,7 @@ private:
unsigned char m_hangType;
unsigned short m_hangSrc;
unsigned short m_hangDst;
std::mt19937 m_random;
bool processIcomVoiceHeader(const unsigned char* data);
bool processIcomVoiceData(const unsigned char* data);

30
NXDNGateway/UDPSocket.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (C) 2006-2016,2020 by Jonathan Naylor G4KLX
* Copyright (C) 2006-2016 by Jonathan Naylor G4KLX
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@ -261,31 +261,3 @@ void CUDPSocket::close()
::close(m_fd);
#endif
}
unsigned long CUDPSocket::getLocalAddress() const
{
unsigned long address = 0UL;
char hostname[80U];
int ret = ::gethostname(hostname, 80);
if (ret == -1)
return 0UL;
struct hostent* phe = ::gethostbyname(hostname);
if (phe == NULL)
return 0UL;
if (phe->h_addrtype != AF_INET)
return 0UL;
for (unsigned int i = 0U; phe->h_addr_list[i] != NULL; i++) {
struct in_addr addr;
::memcpy(&addr, phe->h_addr_list[i], sizeof(struct in_addr));
if (addr.s_addr != INADDR_LOOPBACK) {
address = addr.s_addr;
break;
}
}
return address;
}

4
NXDNGateway/UDPSocket.h
View File

@ -1,5 +1,5 @@
/*
* Copyright (C) 2009-2011,2013,2015,2016,2020 by Jonathan Naylor G4KLX
* Copyright (C) 2009-2011,2013,2015,2016 by Jonathan Naylor G4KLX
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@ -47,8 +47,6 @@ public:
void close();
unsigned long getLocalAddress() const;
static in_addr lookup(const std::string& hostName);
private:

2
NXDNGateway/Version.h
View File

@ -19,6 +19,6 @@
#if !defined(VERSION_H)
#define VERSION_H
const char* VERSION = "20200621";
const char* VERSION = "20200701";
#endif

10
NXDNReflector/KenwoodNetwork.cpp
View File

@ -56,13 +56,18 @@ m_rtcpTimer(1000U, 0U, 200U),
m_hangTimer(1000U, 5U),
m_hangType(0U),
m_hangSrc(0U),
m_hangDst(0U)
m_hangDst(0U),
m_random()
{
assert(!address.empty());
m_sacch = new unsigned char[10U];
m_address = CUDPSocket::lookup(address);
std::random_device rd;
std::mt19937 mt(rd());
m_random = mt;
}
CKenwoodNetwork::~CKenwoodNetwork()
@ -85,7 +90,8 @@ bool CKenwoodNetwork::open()
return false;
}
m_ssrc = m_rtpSocket.getLocalAddress();
std::uniform_int_distribution<unsigned int> dist(0x00000001, 0xfffffffe);
m_ssrc = dist(m_random);
return true;
}

2
NXDNReflector/KenwoodNetwork.h
View File

@ -25,6 +25,7 @@
#include <cstdint>
#include <string>
#include <random>
class CKenwoodNetwork : public ICoreNetwork {
public:
@ -62,6 +63,7 @@ private:
unsigned char m_hangType;
unsigned short m_hangSrc;
unsigned short m_hangDst;
std::mt19937 m_random;
bool processIcomVoiceHeader(const unsigned char* data);
bool processIcomVoiceData(const unsigned char* data);

28
NXDNReflector/UDPSocket.cpp
View File

@ -260,31 +260,3 @@ void CUDPSocket::close()
::close(m_fd);
#endif
}
unsigned long CUDPSocket::getLocalAddress() const
{
unsigned long address = 0UL;
char hostname[80U];
int ret = ::gethostname(hostname, 80);
if (ret == -1)
return 0UL;
struct hostent* phe = ::gethostbyname(hostname);
if (phe == NULL)
return 0UL;
if (phe->h_addrtype != AF_INET)
return 0UL;
for (unsigned int i = 0U; phe->h_addr_list[i] != NULL; i++) {
struct in_addr addr;
::memcpy(&addr, phe->h_addr_list[i], sizeof(struct in_addr));
if (addr.s_addr != INADDR_LOOPBACK) {
address = addr.s_addr;
break;
}
}
return address;
}

4
NXDNReflector/UDPSocket.h
View File

@ -1,5 +1,5 @@
/*
* Copyright (C) 2009-2011,2013,2015,2016,2020 by Jonathan Naylor G4KLX
* Copyright (C) 2009-2011,2013,2015,2016 by Jonathan Naylor G4KLX
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@ -47,8 +47,6 @@ public:
void close();
unsigned long getLocalAddress() const;
static in_addr lookup(const std::string& hostName);
private:

2
NXDNReflector/Version.h
View File

@ -19,6 +19,6 @@
#if !defined(VERSION_H)
#define VERSION_H
const char* VERSION = "20200427";
const char* VERSION = "20200701";
#endif