mirror of
https://github.com/zerotier/ZeroTierOne.git
synced 2025-01-01 10:46:41 +00:00
164 lines
3.5 KiB
C++
164 lines
3.5 KiB
C++
/*
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* ZeroTier One - Global Peer to Peer Ethernet
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* Copyright (C) 2011-2014 ZeroTier Networks LLC
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* --
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*
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* ZeroTier may be used and distributed under the terms of the GPLv3, which
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* are available at: http://www.gnu.org/licenses/gpl-3.0.html
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*
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* If you would like to embed ZeroTier into a commercial application or
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* redistribute it in a modified binary form, please contact ZeroTier Networks
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* LLC. Start here: http://www.zerotier.com/
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <stdarg.h>
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#include <stdexcept>
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#include "IpcConnection.hpp"
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#ifdef __WINDOWS__
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#include <WinSock2.h>
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#include <Windows.h>
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#else
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#include <sys/socket.h>
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#include <sys/un.h>
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#include <unistd.h>
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#endif
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namespace ZeroTier {
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IpcConnection::IpcConnection(const char *endpoint,void (*commandHandler)(void *,IpcConnection *,IpcConnection::EventType,const char *),void *arg) :
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_handler(commandHandler),
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_arg(arg),
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_sock(0)
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{
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#ifdef __WINDOWS__
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#else
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struct sockaddr_un unaddr;
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unaddr.sun_family = AF_UNIX;
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strncpy(unaddr.sun_path,endpoint,sizeof(unaddr.sun_path));
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unaddr.sun_path[sizeof(unaddr.sun_path) - 1] = (char)0;
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_sock = socket(AF_UNIX,SOCK_STREAM,0);
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if (_sock <= 0)
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throw std::runtime_error("unable to create socket of type AF_UNIX");
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if (connect(_sock,(struct sockaddr *)&unaddr,sizeof(unaddr))) {
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::close(_sock);
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throw std::runtime_error("IPC endpoint unreachable");
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}
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#endif
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Thread::start(this);
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}
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IpcConnection::IpcConnection(int s,void (*commandHandler)(void *,IpcConnection *,IpcConnection::EventType,const char *),void *arg) :
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_handler(commandHandler),
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_arg(arg),
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_sock(s)
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{
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Thread::start(this);
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}
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IpcConnection::~IpcConnection()
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{
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#ifdef __WINDOWS__
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#else
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_writeLock.lock();
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int s = _sock;
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_sock = 0;
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if (s > 0) {
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::shutdown(s,SHUT_RDWR);
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::close(s);
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}
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_writeLock.unlock();
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#endif
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}
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void IpcConnection::printf(const char *format,...)
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{
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va_list ap;
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int n;
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char tmp[65536];
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Mutex::Lock _l(_writeLock);
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if (_sock <= 0)
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return;
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va_start(ap,format);
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n = (int)::vsnprintf(tmp,sizeof(tmp),format,ap);
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va_end(ap);
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if (n <= 0)
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return;
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#ifdef __WINDOWS__
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#else
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::write(_sock,tmp,n);
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#endif
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}
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void IpcConnection::threadMain()
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throw()
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{
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#ifdef __WINDOWS__
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#else
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char tmp[65536];
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char linebuf[65536];
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unsigned int lineptr = 0;
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int s,n,i;
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char c;
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for(;;) {
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s = _sock;
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if (s <= 0)
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break;
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n = (int)::read(s,tmp,sizeof(tmp));
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if (n <= 0)
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break;
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for(i=0;i<n;++i) {
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c = (linebuf[lineptr] = tmp[i]);
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if ((c == '\r')||(c == '\n')||(lineptr == (sizeof(linebuf) - 1))) {
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if (lineptr) {
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linebuf[lineptr] = (char)0;
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_handler(_arg,this,IPC_EVENT_COMMAND,linebuf);
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lineptr = 0;
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}
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} else ++lineptr;
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}
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}
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{
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_writeLock.lock();
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int s = _sock;
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_sock = 0;
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if (s > 0)
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::close(s);
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_writeLock.unlock();
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}
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_handler(_arg,this,IPC_EVENT_CONNECTION_CLOSED,(const char *)0);
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#endif
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}
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} // namespace ZeroTier
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