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Remove build-time no-IPv6 setting 

The year is 2014. All supported operating systems have IPv6 support,
most certainly at build time (this doesn't mean that IPv6 is configured,
of course).

If noone is exercising the functionality to disable it, that means it
doesn't get tested, and IMO it's better to get rid of it.

(it's also not used consistently in RPC/boost and Net code...)
0.10
Wladimir J. van der Laan 11 years ago
parent
426dc16f7b
commit
e27c4110d9
6 changed files with 0 additions and 101 deletions
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  1. 45
      configure.ac
  2. 4
      doc/build-unix.md
  3. 10
      src/init.cpp
  4. 12
      src/net.cpp
  5. 26
      src/netbase.cpp
  6. 4
      src/netbase.h

45
configure.ac
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@ -62,13 +62,6 @@ AC_ARG_ENABLE([upnp-default],
[use_upnp_default=$enableval], [use_upnp_default=$enableval],
[use_upnp_default=no]) [use_upnp_default=no])
dnl enable ipv6 support
AC_ARG_ENABLE([ipv6],
[AS_HELP_STRING([--enable-ipv6],
[enable ipv6 (default is yes)])],
[use_ipv6=$enableval],
[use_ipv6=yes])
AC_ARG_ENABLE(tests, AC_ARG_ENABLE(tests,
AS_HELP_STRING([--enable-tests],[compile tests (default is yes)]), AS_HELP_STRING([--enable-tests],[compile tests (default is yes)]),
[use_tests=$enableval], [use_tests=$enableval],
@ -560,27 +553,6 @@ AC_MSG_RESULT($build_bitcoin_cli)
dnl sets $bitcoin_enable_qt, $bitcoin_enable_qt_test, $bitcoin_enable_qt_dbus dnl sets $bitcoin_enable_qt, $bitcoin_enable_qt_test, $bitcoin_enable_qt_dbus
BITCOIN_QT_CONFIGURE([$use_pkgconfig], [qt4]) BITCOIN_QT_CONFIGURE([$use_pkgconfig], [qt4])
if test x$use_ipv6 = xyes; then
dnl Check for ipv6 build requirements
AC_MSG_CHECKING(for operating system IPv6 support)
AC_TRY_LINK([
#if defined(_WINDOWS)
#include <winsock2.h>
#else
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#endif
],[
#if !defined(_WINDOWS)
struct in6_addr ipv6Addr;
struct sockaddr_in6 addr;
#endif
int temp = socket(AF_INET6, SOCK_STREAM, 0);],
[AC_MSG_RESULT(yes); have_ipv6=yes; AC_DEFINE(HAVE_IPV6, 1, [Define this symbol if you have operating system IPv6 support])],
[AC_MSG_RESULT(no)]; have_ipv6=no)
fi
AC_LANG_POP AC_LANG_POP
if test "x$use_ccache" != "xno"; then if test "x$use_ccache" != "xno"; then
@ -609,22 +581,6 @@ else
AC_MSG_RESULT(no) AC_MSG_RESULT(no)
fi fi
dnl enable ipv6 support
AC_MSG_CHECKING([whether to build with support for IPv6])
if test x$have_ipv6 = xno; then
if test x$use_ipv6 = xyes; then
AC_MSG_ERROR([IPv6 requested, but cannot be built. use --disable-ipv6])
fi
AC_MSG_RESULT(no)
else
if test x$use_ipv6 = xyes; then
AC_MSG_RESULT(yes)
AC_DEFINE([USE_IPV6],[1],[Define if IPv6 support should be compiled in])
else
AC_MSG_RESULT(no)
fi
fi
dnl enable upnp support dnl enable upnp support
AC_MSG_CHECKING([whether to build with support for UPnP]) AC_MSG_CHECKING([whether to build with support for UPnP])
if test x$have_miniupnpc = xno; then if test x$have_miniupnpc = xno; then
@ -730,7 +686,6 @@ AC_SUBST(COPYRIGHT_YEAR, _COPYRIGHT_YEAR)
AC_SUBST(USE_UPNP) AC_SUBST(USE_UPNP)
AC_SUBST(USE_QRCODE) AC_SUBST(USE_QRCODE)
AC_SUBST(USE_IPV6)
AC_SUBST(INCLUDES) AC_SUBST(INCLUDES)
AC_SUBST(BOOST_LIBS) AC_SUBST(BOOST_LIBS)
AC_SUBST(TESTDEFS) AC_SUBST(TESTDEFS)

4
doc/build-unix.md
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@ -32,10 +32,6 @@ turned off by default. See the configure options for upnp behavior desired:
--disable-upnp-default (the default) UPnP support turned off by default at runtime --disable-upnp-default (the default) UPnP support turned off by default at runtime
--enable-upnp-default UPnP support turned on by default at runtime --enable-upnp-default UPnP support turned on by default at runtime
IPv6 support may be disabled by setting:
--disable-ipv6 Disable IPv6 support
Licenses of statically linked libraries: Licenses of statically linked libraries:
Berkeley DB New BSD license with additional requirement that linked Berkeley DB New BSD license with additional requirement that linked
software must be free open source software must be free open source

10
src/init.cpp
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@ -689,12 +689,6 @@ bool AppInit2(boost::thread_group& threadGroup)
SetLimited(net); SetLimited(net);
} }
} }
#if defined(USE_IPV6)
#if ! USE_IPV6
else
SetLimited(NET_IPV6);
#endif
#endif
CService addrProxy; CService addrProxy;
bool fProxy = false; bool fProxy = false;
@ -706,10 +700,8 @@ bool AppInit2(boost::thread_group& threadGroup)
if (!IsLimited(NET_IPV4)) if (!IsLimited(NET_IPV4))
SetProxy(NET_IPV4, addrProxy, nSocksVersion); SetProxy(NET_IPV4, addrProxy, nSocksVersion);
if (nSocksVersion > 4) { if (nSocksVersion > 4) {
#ifdef USE_IPV6
if (!IsLimited(NET_IPV6)) if (!IsLimited(NET_IPV6))
SetProxy(NET_IPV6, addrProxy, nSocksVersion); SetProxy(NET_IPV6, addrProxy, nSocksVersion);
#endif
SetNameProxy(addrProxy, nSocksVersion); SetNameProxy(addrProxy, nSocksVersion);
} }
fProxy = true; fProxy = true;
@ -751,9 +743,7 @@ bool AppInit2(boost::thread_group& threadGroup)
else { else {
struct in_addr inaddr_any; struct in_addr inaddr_any;
inaddr_any.s_addr = INADDR_ANY; inaddr_any.s_addr = INADDR_ANY;
#ifdef USE_IPV6
fBound |= Bind(CService(in6addr_any, GetListenPort()), BF_NONE); fBound |= Bind(CService(in6addr_any, GetListenPort()), BF_NONE);
#endif
fBound |= Bind(CService(inaddr_any, GetListenPort()), !fBound ? BF_REPORT_ERROR : BF_NONE); fBound |= Bind(CService(inaddr_any, GetListenPort()), !fBound ? BF_REPORT_ERROR : BF_NONE);
} }
if (!fBound) if (!fBound)

12
src/net.cpp
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@ -917,11 +917,7 @@ void ThreadSocketHandler()
BOOST_FOREACH(SOCKET hListenSocket, vhListenSocket) BOOST_FOREACH(SOCKET hListenSocket, vhListenSocket)
if (hListenSocket != INVALID_SOCKET && FD_ISSET(hListenSocket, &fdsetRecv)) if (hListenSocket != INVALID_SOCKET && FD_ISSET(hListenSocket, &fdsetRecv))
{ {
#ifdef USE_IPV6
struct sockaddr_storage sockaddr; struct sockaddr_storage sockaddr;
#else
struct sockaddr sockaddr;
#endif
socklen_t len = sizeof(sockaddr); socklen_t len = sizeof(sockaddr);
SOCKET hSocket = accept(hListenSocket, (struct sockaddr*)&sockaddr, &len); SOCKET hSocket = accept(hListenSocket, (struct sockaddr*)&sockaddr, &len);
CAddress addr; CAddress addr;
@ -1582,11 +1578,7 @@ bool BindListenPort(const CService &addrBind, string& strError)
int nOne = 1; int nOne = 1;
// Create socket for listening for incoming connections // Create socket for listening for incoming connections
#ifdef USE_IPV6
struct sockaddr_storage sockaddr; struct sockaddr_storage sockaddr;
#else
struct sockaddr sockaddr;
#endif
socklen_t len = sizeof(sockaddr); socklen_t len = sizeof(sockaddr);
if (!addrBind.GetSockAddr((struct sockaddr*)&sockaddr, &len)) if (!addrBind.GetSockAddr((struct sockaddr*)&sockaddr, &len))
{ {
@ -1627,7 +1619,6 @@ bool BindListenPort(const CService &addrBind, string& strError)
return false; return false;
} }
#ifdef USE_IPV6
// some systems don't have IPV6_V6ONLY but are always v6only; others do have the option // some systems don't have IPV6_V6ONLY but are always v6only; others do have the option
// and enable it by default or not. Try to enable it, if possible. // and enable it by default or not. Try to enable it, if possible.
if (addrBind.IsIPv6()) { if (addrBind.IsIPv6()) {
@ -1645,7 +1636,6 @@ bool BindListenPort(const CService &addrBind, string& strError)
setsockopt(hListenSocket, IPPROTO_IPV6, nParameterId, (const char*)&nProtLevel, sizeof(int)); setsockopt(hListenSocket, IPPROTO_IPV6, nParameterId, (const char*)&nProtLevel, sizeof(int));
#endif #endif
} }
#endif
if (::bind(hListenSocket, (struct sockaddr*)&sockaddr, len) == SOCKET_ERROR) if (::bind(hListenSocket, (struct sockaddr*)&sockaddr, len) == SOCKET_ERROR)
{ {
@ -1712,7 +1702,6 @@ void static Discover(boost::thread_group& threadGroup)
if (AddLocal(addr, LOCAL_IF)) if (AddLocal(addr, LOCAL_IF))
LogPrintf("IPv4 %s: %s\n", ifa->ifa_name, addr.ToString()); LogPrintf("IPv4 %s: %s\n", ifa->ifa_name, addr.ToString());
} }
#ifdef USE_IPV6
else if (ifa->ifa_addr->sa_family == AF_INET6) else if (ifa->ifa_addr->sa_family == AF_INET6)
{ {
struct sockaddr_in6* s6 = (struct sockaddr_in6*)(ifa->ifa_addr); struct sockaddr_in6* s6 = (struct sockaddr_in6*)(ifa->ifa_addr);
@ -1720,7 +1709,6 @@ void static Discover(boost::thread_group& threadGroup)
if (AddLocal(addr, LOCAL_IF)) if (AddLocal(addr, LOCAL_IF))
LogPrintf("IPv6 %s: %s\n", ifa->ifa_name, addr.ToString()); LogPrintf("IPv6 %s: %s\n", ifa->ifa_name, addr.ToString());
} }
#endif
} }
freeifaddrs(myaddrs); freeifaddrs(myaddrs);
} }

26
src/netbase.cpp
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@ -78,11 +78,7 @@ bool static LookupIntern(const char *pszName, std::vector<CNetAddr>& vIP, unsign
aiHint.ai_socktype = SOCK_STREAM; aiHint.ai_socktype = SOCK_STREAM;
aiHint.ai_protocol = IPPROTO_TCP; aiHint.ai_protocol = IPPROTO_TCP;
#ifdef USE_IPV6
aiHint.ai_family = AF_UNSPEC; aiHint.ai_family = AF_UNSPEC;
#else
aiHint.ai_family = AF_INET;
#endif
#ifdef WIN32 #ifdef WIN32
aiHint.ai_flags = fAllowLookup ? 0 : AI_NUMERICHOST; aiHint.ai_flags = fAllowLookup ? 0 : AI_NUMERICHOST;
#else #else
@ -102,13 +98,11 @@ bool static LookupIntern(const char *pszName, std::vector<CNetAddr>& vIP, unsign
vIP.push_back(CNetAddr(((struct sockaddr_in*)(aiTrav->ai_addr))->sin_addr)); vIP.push_back(CNetAddr(((struct sockaddr_in*)(aiTrav->ai_addr))->sin_addr));
} }
#ifdef USE_IPV6
if (aiTrav->ai_family == AF_INET6) if (aiTrav->ai_family == AF_INET6)
{ {
assert(aiTrav->ai_addrlen >= sizeof(sockaddr_in6)); assert(aiTrav->ai_addrlen >= sizeof(sockaddr_in6));
vIP.push_back(CNetAddr(((struct sockaddr_in6*)(aiTrav->ai_addr))->sin6_addr)); vIP.push_back(CNetAddr(((struct sockaddr_in6*)(aiTrav->ai_addr))->sin6_addr));
} }
#endif
aiTrav = aiTrav->ai_next; aiTrav = aiTrav->ai_next;
} }
@ -321,11 +315,7 @@ bool static ConnectSocketDirectly(const CService &addrConnect, SOCKET& hSocketRe
{ {
hSocketRet = INVALID_SOCKET; hSocketRet = INVALID_SOCKET;
#ifdef USE_IPV6
struct sockaddr_storage sockaddr; struct sockaddr_storage sockaddr;
#else
struct sockaddr sockaddr;
#endif
socklen_t len = sizeof(sockaddr); socklen_t len = sizeof(sockaddr);
if (!addrConnect.GetSockAddr((struct sockaddr*)&sockaddr, &len)) { if (!addrConnect.GetSockAddr((struct sockaddr*)&sockaddr, &len)) {
LogPrintf("Cannot connect to %s: unsupported network\n", addrConnect.ToString()); LogPrintf("Cannot connect to %s: unsupported network\n", addrConnect.ToString());
@ -585,12 +575,10 @@ CNetAddr::CNetAddr(const struct in_addr& ipv4Addr)
memcpy(ip+12, &ipv4Addr, 4); memcpy(ip+12, &ipv4Addr, 4);
} }
#ifdef USE_IPV6
CNetAddr::CNetAddr(const struct in6_addr& ipv6Addr) CNetAddr::CNetAddr(const struct in6_addr& ipv6Addr)
{ {
memcpy(ip, &ipv6Addr, 16); memcpy(ip, &ipv6Addr, 16);
} }
#endif
CNetAddr::CNetAddr(const char *pszIp, bool fAllowLookup) CNetAddr::CNetAddr(const char *pszIp, bool fAllowLookup)
{ {
@ -764,11 +752,7 @@ std::string CNetAddr::ToStringIP() const
if (IsTor()) if (IsTor())
return EncodeBase32(&ip[6], 10) + ".onion"; return EncodeBase32(&ip[6], 10) + ".onion";
CService serv(*this, 0); CService serv(*this, 0);
#ifdef USE_IPV6
struct sockaddr_storage sockaddr; struct sockaddr_storage sockaddr;
#else
struct sockaddr sockaddr;
#endif
socklen_t socklen = sizeof(sockaddr); socklen_t socklen = sizeof(sockaddr);
if (serv.GetSockAddr((struct sockaddr*)&sockaddr, &socklen)) { if (serv.GetSockAddr((struct sockaddr*)&sockaddr, &socklen)) {
char name[1025] = ""; char name[1025] = "";
@ -813,13 +797,11 @@ bool CNetAddr::GetInAddr(struct in_addr* pipv4Addr) const
return true; return true;
} }
#ifdef USE_IPV6
bool CNetAddr::GetIn6Addr(struct in6_addr* pipv6Addr) const bool CNetAddr::GetIn6Addr(struct in6_addr* pipv6Addr) const
{ {
memcpy(pipv6Addr, ip, 16); memcpy(pipv6Addr, ip, 16);
return true; return true;
} }
#endif
// get canonical identifier of an address' group // get canonical identifier of an address' group
// no two connections will be attempted to addresses with the same group // no two connections will be attempted to addresses with the same group
@ -993,23 +975,19 @@ CService::CService(const struct in_addr& ipv4Addr, unsigned short portIn) : CNet
{ {
} }
#ifdef USE_IPV6
CService::CService(const struct in6_addr& ipv6Addr, unsigned short portIn) : CNetAddr(ipv6Addr), port(portIn) CService::CService(const struct in6_addr& ipv6Addr, unsigned short portIn) : CNetAddr(ipv6Addr), port(portIn)
{ {
} }
#endif
CService::CService(const struct sockaddr_in& addr) : CNetAddr(addr.sin_addr), port(ntohs(addr.sin_port)) CService::CService(const struct sockaddr_in& addr) : CNetAddr(addr.sin_addr), port(ntohs(addr.sin_port))
{ {
assert(addr.sin_family == AF_INET); assert(addr.sin_family == AF_INET);
} }
#ifdef USE_IPV6
CService::CService(const struct sockaddr_in6 &addr) : CNetAddr(addr.sin6_addr), port(ntohs(addr.sin6_port)) CService::CService(const struct sockaddr_in6 &addr) : CNetAddr(addr.sin6_addr), port(ntohs(addr.sin6_port))
{ {
assert(addr.sin6_family == AF_INET6); assert(addr.sin6_family == AF_INET6);
} }
#endif
bool CService::SetSockAddr(const struct sockaddr *paddr) bool CService::SetSockAddr(const struct sockaddr *paddr)
{ {
@ -1017,11 +995,9 @@ bool CService::SetSockAddr(const struct sockaddr *paddr)
case AF_INET: case AF_INET:
*this = CService(*(const struct sockaddr_in*)paddr); *this = CService(*(const struct sockaddr_in*)paddr);
return true; return true;
#ifdef USE_IPV6
case AF_INET6: case AF_INET6:
*this = CService(*(const struct sockaddr_in6*)paddr); *this = CService(*(const struct sockaddr_in6*)paddr);
return true; return true;
#endif
default: default:
return false; return false;
} }
@ -1093,7 +1069,6 @@ bool CService::GetSockAddr(struct sockaddr* paddr, socklen_t *addrlen) const
paddrin->sin_port = htons(port); paddrin->sin_port = htons(port);
return true; return true;
} }
#ifdef USE_IPV6
if (IsIPv6()) { if (IsIPv6()) {
if (*addrlen < (socklen_t)sizeof(struct sockaddr_in6)) if (*addrlen < (socklen_t)sizeof(struct sockaddr_in6))
return false; return false;
@ -1106,7 +1081,6 @@ bool CService::GetSockAddr(struct sockaddr* paddr, socklen_t *addrlen) const
paddrin6->sin6_port = htons(port); paddrin6->sin6_port = htons(port);
return true; return true;
} }
#endif
return false; return false;
} }

4
src/netbase.h
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@ -77,10 +77,8 @@ class CNetAddr
int GetReachabilityFrom(const CNetAddr *paddrPartner = NULL) const; int GetReachabilityFrom(const CNetAddr *paddrPartner = NULL) const;
void print() const; void print() const;
#ifdef USE_IPV6
CNetAddr(const struct in6_addr& pipv6Addr); CNetAddr(const struct in6_addr& pipv6Addr);
bool GetIn6Addr(struct in6_addr* pipv6Addr) const; bool GetIn6Addr(struct in6_addr* pipv6Addr) const;
#endif
friend bool operator==(const CNetAddr& a, const CNetAddr& b); friend bool operator==(const CNetAddr& a, const CNetAddr& b);
friend bool operator!=(const CNetAddr& a, const CNetAddr& b); friend bool operator!=(const CNetAddr& a, const CNetAddr& b);
@ -121,10 +119,8 @@ class CService : public CNetAddr
std::string ToStringIPPort() const; std::string ToStringIPPort() const;
void print() const; void print() const;
#ifdef USE_IPV6
CService(const struct in6_addr& ipv6Addr, unsigned short port); CService(const struct in6_addr& ipv6Addr, unsigned short port);
CService(const struct sockaddr_in6& addr); CService(const struct sockaddr_in6& addr);
#endif
IMPLEMENT_SERIALIZE IMPLEMENT_SERIALIZE
( (

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