mirror of
https://github.com/RetroShare/RetroShare.git
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40f4009ca7
git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@3980 b45a01b8-16f6-495d-af2f-9b41ad6348cc
151 lines
3.1 KiB
C++
151 lines
3.1 KiB
C++
/*
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* libretroshare/src/util: rsnet.cc
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*
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* Universal Networking Header for RetroShare.
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*
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* Copyright 2007-2008 by Robert Fernie.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License Version 2 as published by the Free Software Foundation.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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* USA.
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*
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* Please report all bugs and problems to "retroshare@lunamutt.com".
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*
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*/
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#include "util/rsnet.h"
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#include "util/rsthreads.h"
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#include <string.h>
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#ifdef WINDOWS_SYS
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#else
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#include <netdb.h>
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#endif
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/* enforce LITTLE_ENDIAN on Windows */
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#ifdef WINDOWS_SYS
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#define BYTE_ORDER 1234
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#define LITTLE_ENDIAN 1234
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#define BIG_ENDIAN 4321
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#endif
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uint64_t ntohll(uint64_t x)
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{
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#ifdef BYTE_ORDER
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#if BYTE_ORDER == BIG_ENDIAN
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return x;
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#elif BYTE_ORDER == LITTLE_ENDIAN
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uint32_t top = (uint32_t) (x >> 32);
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uint32_t bot = (uint32_t) (0x00000000ffffffffULL & x);
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uint64_t rev = ((uint64_t) ntohl(top)) | (((uint64_t) ntohl(bot)) << 32);
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return rev;
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#else
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#error "ENDIAN determination Failed"
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#endif
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#else
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#error "ENDIAN determination Failed (BYTE_ORDER not defined)"
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#endif
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}
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uint64_t htonll(uint64_t x)
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{
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return ntohll(x);
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}
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void sockaddr_clear(struct sockaddr_in *addr)
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{
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memset(addr, 0, sizeof(struct sockaddr_in));
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addr->sin_family = AF_INET;
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}
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bool isValidNet(const struct in_addr *addr)
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{
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// invalid address.
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if((*addr).s_addr == INADDR_NONE)
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return false;
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if((*addr).s_addr == 0)
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return false;
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// should do more tests.
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return true;
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}
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bool isLoopbackNet(const struct in_addr *addr)
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{
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in_addr_t taddr = ntohl(addr->s_addr);
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return (taddr == (127 << 24 | 1));
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}
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bool isPrivateNet(const struct in_addr *addr)
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{
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in_addr_t taddr = ntohl(addr->s_addr);
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// 10.0.0.0/8
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// 172.16.0.0/12
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// 192.168.0.0/16
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// 169.254.0.0/16
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if ((taddr>>24 == 10) ||
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(taddr>>20 == (172<<4 | 16>>4)) ||
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(taddr>>16 == (192<<8 | 168)) ||
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(taddr>>16 == (169<<8 | 254)))
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{
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return true;
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}
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else
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{
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return false;
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}
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}
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bool isExternalNet(const struct in_addr *addr)
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{
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if (!isValidNet(addr))
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{
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return false;
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}
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if (isLoopbackNet(addr))
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{
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return false;
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}
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if (isPrivateNet(addr))
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{
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return false;
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}
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return true;
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}
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std::ostream &operator<<(std::ostream &out, const struct sockaddr_in &addr)
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{
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out << "[" << inet_ntoa(addr.sin_addr) << ":";
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out << htons(addr.sin_port) << "]";
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return out;
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}
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/* thread-safe version of inet_ntoa */
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static RsMutex inetMtx;
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std::string rs_inet_ntoa(struct in_addr in)
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{
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RsStackMutex stack(inetMtx);
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std::string addr(inet_ntoa(in));
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return addr;
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}
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