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Merge pull request #1191 from G10h4ck/IPv6-v3

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IPv6 support
This commit is contained in:
csoler 2018-03-27 20:54:31 +02:00 • committed by GitHub
commit 73c6deebf4
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20 changed files with 838 additions and 689 deletions
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5
libretroshare/src/util/extaddrfinder.cc
View file

@ -94,7 +94,10 @@ static void getPage(const std::string& server_name,std::string& page)
#endif
std::cerr << "ExtAddrFinder: resolved hostname " << server_name << " to " << rs_inet_ntoa(in) << std::endl;
if(unix_connect(sockfd,(struct sockaddr *)&serveur, sizeof(serveur)) == -1)
sockaddr_storage server;
sockaddr_storage_setipv4(server, &serveur);
sockaddr_storage_setport(server, 80);
if(unix_connect(sockfd, server) == -1)
{
std::cerr << "ExtAddrFinder: Connection error to " << server_name << std::endl ;
unix_close(sockfd);

29
libretroshare/src/util/rsnet.h
View file

@ -88,14 +88,26 @@ std::string rs_inet_ntoa(struct in_addr in);
/***************************/
// sockaddr_storage fns.
// Standard bind, on OSX anyway will not accept a longer socklen for IPv4.
// so hidding details behind function.
int universal_bind(int fd, const struct sockaddr *addr, socklen_t socklen);
int rs_bind(int fd, const sockaddr_storage& addr);
void sockaddr_storage_clear(struct sockaddr_storage &addr);
// mods.
bool sockaddr_storage_zeroip(struct sockaddr_storage &addr);
/**
* @brief Use this function to copy sockaddr_storage.
*
* POSIX does not require that objects of type sockaddr_storage can be copied
* as aggregates thus it is unsafe to aggregate copy ( operator = )
* sockaddr_storage and unexpected behaviors may happens due to padding
* and alignment.
*
* @see https://sourceware.org/bugzilla/show_bug.cgi?id=20111
* @see https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71120
*/
bool sockaddr_storage_copy(const sockaddr_storage& src, sockaddr_storage& dst);
bool sockaddr_storage_copyip(struct sockaddr_storage &dst, const struct sockaddr_storage &src);
uint16_t sockaddr_storage_port(const struct sockaddr_storage &addr);
bool sockaddr_storage_setport(struct sockaddr_storage &addr, uint16_t port);
@ -103,9 +115,14 @@ bool sockaddr_storage_setport(struct sockaddr_storage &addr, uint16_t port);
bool sockaddr_storage_setipv4(struct sockaddr_storage &addr, const sockaddr_in *addr_ipv4);
bool sockaddr_storage_setipv6(struct sockaddr_storage &addr, const sockaddr_in6 *addr_ipv6);
bool sockaddr_storage_inet_pton( sockaddr_storage &addr,
const std::string& ipStr );
bool sockaddr_storage_ipv4_aton(struct sockaddr_storage &addr, const char *name);
bool sockaddr_storage_ipv4_setport(struct sockaddr_storage &addr, const uint16_t port);
bool sockaddr_storage_ipv4_to_ipv6(sockaddr_storage &addr);
bool sockaddr_storage_ipv6_to_ipv4(sockaddr_storage &addr);
// comparisons.
bool operator<(const struct sockaddr_storage &a, const struct sockaddr_storage &b);
@ -131,8 +148,12 @@ bool sockaddr_storage_isValidNet(const struct sockaddr_storage &addr);
bool sockaddr_storage_isLoopbackNet(const struct sockaddr_storage &addr);
bool sockaddr_storage_isPrivateNet(const struct sockaddr_storage &addr);
bool sockaddr_storage_isLinkLocalNet(const struct sockaddr_storage &addr);
bool sockaddr_storage_ipv6_isLinkLocalNet(const sockaddr_storage &addr);
bool sockaddr_storage_isExternalNet(const struct sockaddr_storage &addr);
bool rs_inet_ntop(const sockaddr_storage &addr, std::string &dst);
bool sockaddr_storage_inet_ntop(const sockaddr_storage &addr, std::string &dst);
int rs_setsockopt( int sockfd, int level, int optname,
const uint8_t *optval, uint32_t optlen );
#endif /* RS_UNIVERSAL_NETWORK_HEADER */

342
libretroshare/src/util/rsnet_ss.cc
View file

@ -26,6 +26,24 @@
#include <sstream>
#include <iomanip>
#include <cstdlib>
#ifdef WINDOWS_SYS
# include <Winsock2.h>
/** Provides Linux like accessor for in6_addr.s6_addr16 for Windows.
* Yet Windows doesn't provide 32 bits accessors so there is no way to use
* in6_addr.s6_addr32 crossplatform.
*/
# define s6_addr16 u.Word
#else
# include <netinet/in.h>
# include <sys/socket.h>
# include <sys/types.h>
# ifdef __APPLE__
/// Provides Linux like accessor for in6_addr.s6_addr16 for Mac.
# define s6_addr16 __u6_addr.__u6_addr16
#endif // __APPLE__
#endif // WINDOWS_SYS
#include "util/rsnet.h"
#include "util/rsstring.h"
@ -90,17 +108,14 @@ bool sockaddr_storage_ipv6_isExternalNet(const struct sockaddr_storage &addr);
/******************************** Socket Fns ***********************************/
// Standard bind, on OSX anyway will not accept a longer socklen for IPv4.
// so hidding details behind function.
int universal_bind(int fd, const struct sockaddr *addr, socklen_t socklen)
int rs_bind(int fd, const sockaddr_storage& addr)
{
#ifdef SS_DEBUG
std::cerr << "universal_bind()";
std::cerr << std::endl;
std::cerr << __PRETTY_FUNCTION__ << std::endl;
#endif
const struct sockaddr_storage *ss_addr = (struct sockaddr_storage *) addr;
socklen_t len = socklen;
switch (ss_addr->ss_family)
socklen_t len = 0;
switch (addr.ss_family)
{
case AF_INET:
len = sizeof(struct sockaddr_in);
@ -110,13 +125,7 @@ int universal_bind(int fd, const struct sockaddr *addr, socklen_t socklen)
break;
}
if (len > socklen)
{
std::cerr << "universal_bind() ERROR len > socklen" << std::endl;
len = socklen;
}
return bind(fd, addr, len);
return bind(fd, reinterpret_cast<const struct sockaddr *>(&addr), len);
}
@ -252,6 +261,58 @@ bool sockaddr_storage_setipv6(struct sockaddr_storage &addr, const sockaddr_in6
return true;
}
#ifdef WINDOWS_SYS
int inet_pton(int af, const char *src, void *dst)
{
sockaddr_storage ss;
int size = sizeof(ss);
char src_copy[INET6_ADDRSTRLEN+1];
ZeroMemory(&ss, sizeof(ss));
/* stupid non-const API */
strncpy (src_copy, src, INET6_ADDRSTRLEN+1);
src_copy[INET6_ADDRSTRLEN] = 0;
if (WSAStringToAddressA(src_copy, af, NULL, (sockaddr *)&ss, &size) == 0)
{
switch(af)
{
case AF_INET:
*(struct in_addr *)dst = ((struct sockaddr_in *)&ss)->sin_addr;
return 1;
case AF_INET6:
*(struct in6_addr *)dst = ((struct sockaddr_in6 *)&ss)->sin6_addr;
return 1;
}
}
return 0;
}
#endif
bool sockaddr_storage_inet_pton( sockaddr_storage &addr,
const std::string& ipStr )
{
#ifdef SS_DEBUG
std::cerr << __PRETTY_FUNCTION__ << std::endl;
#endif
struct sockaddr_in6 * addrv6p = (struct sockaddr_in6 *) &addr;
struct sockaddr_in * addrv4p = (struct sockaddr_in *) &addr;
if ( 1 == inet_pton(AF_INET6, ipStr.c_str(), &(addrv6p->sin6_addr)) )
{
addr.ss_family = AF_INET6;
return true;
}
else if ( 1 == inet_pton(AF_INET, ipStr.c_str(), &(addrv4p->sin_addr)) )
{
addr.ss_family = AF_INET;
return sockaddr_storage_ipv4_to_ipv6(addr);
}
return false;
}
bool sockaddr_storage_ipv4_aton(struct sockaddr_storage &addr, const char *name)
{
@ -265,6 +326,71 @@ bool sockaddr_storage_ipv4_aton(struct sockaddr_storage &addr, const char *name)
return (1 == inet_aton(name, &(ipv4_ptr->sin_addr)));
}
bool sockaddr_storage_ipv4_to_ipv6(sockaddr_storage &addr)
{
#ifdef SS_DEBUG
std::cerr << __PRETTY_FUNCTION__ << std::endl;
#endif
if ( addr.ss_family == AF_INET6 ) return true;
if ( addr.ss_family == AF_INET )
{
sockaddr_in & addr_ipv4 = (sockaddr_in &) addr;
sockaddr_in6 & addr_ipv6 = (sockaddr_in6 &) addr;
uint32_t ip = addr_ipv4.sin_addr.s_addr;
uint16_t port = addr_ipv4.sin_port;
sockaddr_storage_clear(addr);
addr_ipv6.sin6_family = AF_INET6;
addr_ipv6.sin6_port = port;
addr_ipv6.sin6_addr.s6_addr16[5] = htons(0xffff);
memmove( reinterpret_cast<void*>(&(addr_ipv6.sin6_addr.s6_addr16[6])),
reinterpret_cast<void*>(&ip), 4 );
return true;
}
return false;
}
bool sockaddr_storage_ipv6_to_ipv4(sockaddr_storage &addr)
{
#ifdef SS_DEBUG
std::cerr << __PRETTY_FUNCTION__ << std::endl;
#endif
if ( addr.ss_family == AF_INET ) return true;
if ( addr.ss_family == AF_INET6 )
{
sockaddr_in6 & addr_ipv6 = (sockaddr_in6 &) addr;
bool ipv4m = addr_ipv6.sin6_addr.s6_addr16[5] == htons(0xffff);
for ( int i = 0; ipv4m && i < 5 ; ++i )
ipv4m &= addr_ipv6.sin6_addr.s6_addr16[i] == htons(0x0000);
if(ipv4m)
{
uint32_t ip;
memmove( reinterpret_cast<void*>(&ip),
reinterpret_cast<void*>(&(addr_ipv6.sin6_addr.s6_addr16[6])),
4 );
uint16_t port = addr_ipv6.sin6_port;
sockaddr_in & addr_ipv4 = (sockaddr_in &) addr;
sockaddr_storage_clear(addr);
addr_ipv4.sin_family = AF_INET;
addr_ipv4.sin_port = port;
addr_ipv4.sin_addr.s_addr = ip;
return true;
}
}
return false;
}
/******************************** Comparisions **********************************/
@ -370,15 +496,20 @@ std::string sockaddr_storage_tostring(const struct sockaddr_storage &addr)
switch(addr.ss_family)
{
case AF_INET:
case AF_INET6:
output += "=";
output += sockaddr_storage_iptostring(addr);
output += ":";
output += sockaddr_storage_porttostring(addr);
break;
default:
break;
case AF_INET:
output += "=";
output += sockaddr_storage_iptostring(addr);
output += ":";
output += sockaddr_storage_porttostring(addr);
break;
case AF_INET6:
output += "=[";
output += sockaddr_storage_iptostring(addr);
output += "]:";
output += sockaddr_storage_porttostring(addr);
break;
default:
break;
}
return output;
}
@ -406,7 +537,7 @@ void sockaddr_storage_dump(const sockaddr_storage & addr, std::string * outputSt
{
const sockaddr_in6 * in6 = (const sockaddr_in6 *) & addr;
std::string addrStr = "INVALID_IPV6";
rs_inet_ntop(addr, addrStr);
sockaddr_storage_inet_ntop(addr, addrStr);
output << "addr.ss_family = AF_INET6";
output << " in6->sin6_addr = ";
output << addrStr;
@ -422,7 +553,8 @@ void sockaddr_storage_dump(const sockaddr_storage & addr, std::string * outputSt
const uint8_t * buf = reinterpret_cast<const uint8_t *>(&addr);
for( uint32_t i = 0; i < sizeof(addr); ++i )
output << std::setw(2) << std::setfill('0') << std::hex << +buf[i];
// The unary +buf[i] operation forces a no-op type conversion to an int with the correct sign
/* The unary +buf[i] operation forces a no-op type conversion to an int
* with the correct sign */
}
}
@ -450,6 +582,12 @@ std::string sockaddr_storage_familytostring(const struct sockaddr_storage &addr)
break;
default:
output = "AF_INVALID";
#ifdef SS_DEBUG
std::cerr << __PRETTY_FUNCTION__ << " Got invalid address!"
<< std::endl;
sockaddr_storage_dump(addr);
print_stacktrace();
#endif
break;
}
return output;
@ -460,15 +598,18 @@ std::string sockaddr_storage_iptostring(const struct sockaddr_storage &addr)
std::string output;
switch(addr.ss_family)
{
case AF_INET:
output = sockaddr_storage_ipv4_iptostring(addr);
break;
case AF_INET6:
output = sockaddr_storage_ipv6_iptostring(addr);
break;
default:
output = "INVALID_IP";
break;
case AF_INET:
output = sockaddr_storage_ipv4_iptostring(addr);
break;
case AF_INET6:
output = sockaddr_storage_ipv6_iptostring(addr);
break;
default:
output = "INVALID_IP";
std::cerr << __PRETTY_FUNCTION__ << " Got invalid IP:" << std::endl;
sockaddr_storage_dump(addr);
print_stacktrace();
break;
}
return output;
}
@ -592,9 +733,7 @@ bool sockaddr_storage_isLinkLocalNet(const struct sockaddr_storage &addr)
case AF_INET:
return isLinkLocalNet(&(to_const_ipv4_ptr(addr)->sin_addr));
case AF_INET6:
std::cerr << __PRETTY_FUNCTION__ << " for AF_INET6 not implemented"
<< std::endl;
break;
return sockaddr_storage_ipv6_isLinkLocalNet(addr);
default:
#ifdef SS_DEBUG
std::cerr << __PRETTY_FUNCTION__ <<" INVALID Family:" << std::endl;
@ -606,6 +745,16 @@ bool sockaddr_storage_isLinkLocalNet(const struct sockaddr_storage &addr)
return false;
}
bool sockaddr_storage_ipv6_isLinkLocalNet(const sockaddr_storage &addr)
{
if(addr.ss_family != AF_INET6) return false;
const sockaddr_in6 * addr6 = (const sockaddr_in6 *) &addr;
uint16_t mask = htons(0xffc0);
uint16_t llPrefix = htons(0xfe80);
return ((addr6->sin6_addr.s6_addr16[0] & mask ) == llPrefix);
}
bool sockaddr_storage_isExternalNet(const struct sockaddr_storage &addr)
{
@ -668,6 +817,51 @@ const struct sockaddr_in6 *to_const_ipv6_ptr(const struct sockaddr_storage &addr
/******************************** Set / Clear ***********************************/
bool sockaddr_storage_copy(const sockaddr_storage& src, sockaddr_storage& dst)
{
if(&src == &dst) return true;
switch(src.ss_family)
{
case AF_INET:
{
sockaddr_storage_clear(dst);
const sockaddr_in& ins(reinterpret_cast<const sockaddr_in&>(src));
sockaddr_in& ind(reinterpret_cast<sockaddr_in&>(dst));
ind.sin_family = AF_INET;
ind.sin_addr.s_addr = ins.sin_addr.s_addr;
ind.sin_port = ins.sin_port;
return true;
}
case AF_INET6:
{
sockaddr_storage_clear(dst);
const sockaddr_in6& ins6(reinterpret_cast<const sockaddr_in6&>(src));
sockaddr_in6& ind6(reinterpret_cast<sockaddr_in6&>(dst));
ind6.sin6_family = AF_INET6;
for(int i=0; i<8; ++i)
ind6.sin6_addr.s6_addr16[i] = ins6.sin6_addr.s6_addr16[i];
ind6.sin6_flowinfo = ins6.sin6_flowinfo;
ind6.sin6_port = ins6.sin6_port;
ind6.sin6_scope_id = ins6.sin6_scope_id;
return true;
}
default:
#ifdef SS_DEBUG
std::cerr << __PRETTY_FUNCTION__ << " Attempt to copy unknown family! "
<< src.ss_family << " defaulting to memmove!" << std::endl;
sockaddr_storage_dump(src);
print_stacktrace();
#endif // SS_DEBUG
memmove(&dst, &src, sizeof(sockaddr_storage));
return true;
}
}
bool sockaddr_storage_ipv4_zeroip(struct sockaddr_storage &addr)
{
#ifdef SS_DEBUG
@ -890,7 +1084,7 @@ std::string sockaddr_storage_ipv4_iptostring(const struct sockaddr_storage &addr
std::string sockaddr_storage_ipv6_iptostring(const struct sockaddr_storage & addr)
{
std::string addrStr;
rs_inet_ntop(addr, addrStr);
sockaddr_storage_inet_ntop(addr, addrStr);
return addrStr;
}
@ -979,62 +1173,58 @@ bool sockaddr_storage_ipv4_isExternalNet(const struct sockaddr_storage &addr)
}
bool sockaddr_storage_ipv6_isnull(const struct sockaddr_storage &/*addr*/)
bool sockaddr_storage_ipv6_isnull(const struct sockaddr_storage& addr)
{
#ifdef SS_DEBUG
std::cerr << "sockaddr_storage_ipv6_isnull() TODO";
std::cerr << std::endl;
#endif
const sockaddr_in6& addr6 = reinterpret_cast<const sockaddr_in6&>(addr);
return false;
uint16_t nZero = htons(0); // anyway 0 should be the same in host and net
bool isZero = (addr6.sin6_addr.s6_addr16[7] == nZero);
for (int i=0; isZero && i<7; ++i)
isZero &= (addr6.sin6_addr.s6_addr16[i] == nZero);
return nZero;
}
bool sockaddr_storage_ipv6_isValidNet(const struct sockaddr_storage &/*addr*/)
bool sockaddr_storage_ipv6_isValidNet(const struct sockaddr_storage& addr)
{
#ifdef SS_DEBUG
std::cerr << "sockaddr_storage_ipv6_isValidNet() TODO";
std::cerr << std::endl;
#endif
return false;
return !sockaddr_storage_ipv6_isnull(addr);
}
bool sockaddr_storage_ipv6_isLoopbackNet(const struct sockaddr_storage &/*addr*/)
bool sockaddr_storage_ipv6_isLoopbackNet(const struct sockaddr_storage& addr)
{
const sockaddr_in6& addr6 = reinterpret_cast<const sockaddr_in6&>(addr);
bool isLoopBack = (addr6.sin6_addr.s6_addr16[7] == htons(0x0001));
uint16_t nZero = htons(0); // anyway 0 should be the same in host and net
for (int i=0; isLoopBack && i<7; ++i)
isLoopBack &= (addr6.sin6_addr.s6_addr16[i] == nZero);
#ifdef SS_DEBUG
std::cerr << "sockaddr_storage_ipv6_isLoopbackNet() TODO";
std::cerr << std::endl;
std::cerr << __PRETTY_FUNCTION__ << " " << sockaddr_storage_tostring(addr)
<< " " << isLoopBack << std::endl;
#endif
return false;
return isLoopBack;
}
bool sockaddr_storage_ipv6_isPrivateNet(const struct sockaddr_storage &/*addr*/)
{
#ifdef SS_DEBUG
std::cerr << "sockaddr_storage_ipv6_isPrivateNet() TODO";
std::cerr << std::endl;
#endif
/* It is unlikely that we end up connecting to an IPv6 address behind NAT
* W.R.T. RS it is probably better to consider all IPv6 as internal/local
* addresses as direct connection should be always possible. */
return false;
return true;
}
bool sockaddr_storage_ipv6_isExternalNet(const struct sockaddr_storage &/*addr*/)
{
#ifdef SS_DEBUG
std::cerr << "sockaddr_storage_ipv6_isExternalNet() TODO";
std::cerr << std::endl;
#endif
/* It is unlikely that we end up connecting to an IPv6 address behind NAT
* W.R.T. RS it is probably better to consider all IPv6 as internal/local
* addresses as direct connection should be always possible. */
return false;
}
#ifdef WINDOWS_SYS
#include <cstdlib>
#include <Winsock2.h>
#endif
bool rs_inet_ntop (const sockaddr_storage &addr, std::string &dst)
bool sockaddr_storage_inet_ntop (const sockaddr_storage &addr, std::string &dst)
{
bool success = false;
char ipStr[255];
@ -1071,3 +1261,15 @@ bool rs_inet_ntop (const sockaddr_storage &addr, std::string &dst)
dst = ipStr;
return success;
}
int rs_setsockopt( int sockfd, int level, int optname,
const uint8_t *optval, uint32_t optlen )
{
#ifdef WINDOWS_SYS
return setsockopt( sockfd, level, optname,
reinterpret_cast<const char*>(optval), optlen );
#else
return setsockopt( sockfd, level, optname,
reinterpret_cast<const void*>(optval), optlen );
#endif // WINDOWS_SYS
}

13
libretroshare/src/util/rsthreads.cc
View file

@ -169,11 +169,14 @@ void RsTickingThread::fullstop()
void RsThread::start(const std::string &threadName)
{
if(isRunning())
{
std::cerr << "(EE) RsThread \"" << threadName << "\" is already running. Will not start twice!" << std::endl;
return ;
}
if(isRunning())
{
std::cerr << "(EE) RsThread \"" << threadName
<< "\" is already running. Will not start twice!"
<< std::endl;
print_stacktrace();
return;
}
pthread_t tid;
void *data = (void *)this ;