mirror of
https://github.com/zerotier/ZeroTierOne.git
synced 2024-12-29 17:28:52 +00:00
339 lines
8.8 KiB
C++
339 lines
8.8 KiB
C++
/*
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* ZeroTier One - Global Peer to Peer Ethernet
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* Copyright (C) 2012-2013 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 <time.h>
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#include <errno.h>
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#include <string>
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#include <stdexcept>
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#include "node/Constants.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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#include <tchar.h>
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#include <wchar.h>
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#else
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#include <unistd.h>
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#include <pwd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <signal.h>
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#endif
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#include "node/Constants.hpp"
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#include "node/Defaults.hpp"
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#include "node/Utils.hpp"
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#include "node/Node.hpp"
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#include "node/Condition.hpp"
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using namespace ZeroTier;
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static Node *node = (Node *)0;
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static void printHelp(const char *cn,FILE *out)
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{
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fprintf(out,"ZeroTier One version %d.%d.%d"ZT_EOL_S"(c)2012-2013 ZeroTier Networks LLC"ZT_EOL_S,Node::versionMajor(),Node::versionMinor(),Node::versionRevision());
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fprintf(out,"Licensed under the GNU General Public License v3"ZT_EOL_S""ZT_EOL_S);
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fprintf(out,"Usage: %s [-switches] [home directory]"ZT_EOL_S""ZT_EOL_S,cn);
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fprintf(out,"Available switches:"ZT_EOL_S);
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fprintf(out," -h - Display this help"ZT_EOL_S);
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fprintf(out," -p<port> - Bind to this port for network I/O"ZT_EOL_S);
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fprintf(out," -c<port> - Bind to this port for local control packets"ZT_EOL_S);
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fprintf(out," -q - Send a query to a running service (zerotier-cli)");
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}
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namespace ZeroTierCLI { // ----------------------------------------------------
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static void printHelp(FILE *out,const char *exename)
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{
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fprintf(out,"Usage: %s [-switches] <command>"ZT_EOL_S,exename);
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fprintf(out,ZT_EOL_S);
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fprintf(out,"Available switches:"ZT_EOL_S);
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fprintf(out," -c<port> - Communicate with daemon over this local port"ZT_EOL_S);
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fprintf(out," -t<token> - Specify token on command line"ZT_EOL_S);
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fprintf(out," -T<file> - Read token from file"ZT_EOL_S);
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fprintf(out,ZT_EOL_S);
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fprintf(out,"Use the 'help' command to get help from ZeroTier One itself."ZT_EOL_S);
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}
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static volatile unsigned int numResults = 0;
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static Condition doneCondition;
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static void resultHandler(void *arg,unsigned long id,const char *line)
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{
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++numResults;
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if (strlen(line))
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fprintf(stdout,"%s"ZT_EOL_S,line);
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else doneCondition.signal();
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}
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// Runs instead of rest of main() if process is called zerotier-cli or if
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// -q is specified as an option.
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#ifdef __WINDOWS__
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static int main(int argc,_TCHAR* argv[])
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#else
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static int main(int argc,char **argv)
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#endif
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{
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if (argc <= 1) {
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printHelp(stdout,argv[0]);
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return -1;
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}
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std::string authToken;
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std::string command;
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bool pastSwitches = false;
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unsigned int controlPort = 0;
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for(int i=1;i<argc;++i) {
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if ((argv[i][0] == '-')&&(!pastSwitches)) {
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if (strlen(argv[i]) <= 1) {
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printHelp(stdout,argv[0]);
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return -1;
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}
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switch(argv[i][1]) {
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case 'q': // does nothing, for invocation without binary path name aliasing
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if (argv[i][2]) {
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printHelp(argv[0],stderr);
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return 0;
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}
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break;
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case 'c':
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controlPort = Utils::strToUInt(argv[i] + 2);
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break;
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case 't':
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authToken.assign(argv[i] + 2);
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break;
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case 'T':
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if (!Utils::readFile(argv[i] + 2,authToken)) {
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fprintf(stdout,"FATAL ERROR: unable to read token from '%s'"ZT_EOL_S,argv[i] + 2);
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return -2;
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}
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break;
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default:
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return -1;
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}
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} else {
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pastSwitches = true;
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if (command.length())
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command.push_back(' ');
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command.append(argv[i]);
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}
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}
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if (!command.length()) {
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printHelp(stdout,argv[0]);
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return -1;
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}
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if (!authToken.length()) {
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const char *home = getenv("HOME");
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if (home) {
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std::string dotZeroTierAuthToken(home);
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dotZeroTierAuthToken.push_back(ZT_PATH_SEPARATOR);
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dotZeroTierAuthToken.append(".zerotierOneAuthToken");
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if (!Utils::readFile(dotZeroTierAuthToken.c_str(),authToken)) {
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#ifndef __WINDOWS__
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#ifdef __APPLE__
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const char *systemAuthTokenPath = "/Library/Application Support/ZeroTier/One/authtoken.secret";
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#else
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const char *systemAuthTokenPath = "/var/lib/zerotier-one/authtoken.secret";
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#endif
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if (!Utils::readFile(systemAuthTokenPath,authToken)) {
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fprintf(stdout,"FATAL ERROR: no token specified on command line and could not read '%s' or '%s'"ZT_EOL_S,dotZeroTierAuthToken.c_str(),systemAuthTokenPath);
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return -2;
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}
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#else // __WINDOWS__
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fprintf(stdout,"FATAL ERROR: no token specified on command line and could not read '%s'"ZT_EOL_S,dotZeroTierAuthToken.c_str());
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return -2;
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#endif // __WINDOWS__
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}
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}
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}
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if (!authToken.length()) {
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fprintf(stdout,"FATAL ERROR: could not find auth token"ZT_EOL_S);
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return -2;
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}
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Node::LocalClient client(authToken.c_str(),controlPort,&resultHandler,(void *)0);
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client.send(command.c_str());
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doneCondition.wait(1000);
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if (!numResults) {
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fprintf(stdout,"ERROR: no results received. Is ZeroTier One running?"ZT_EOL_S);
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return -1;
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}
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return 0;
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}
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} // namespace ZeroTierCLI ----------------------------------------------------
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#ifdef __UNIX_LIKE__
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static void sighandlerQuit(int sig)
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{
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Node *n = node;
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if (n)
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n->terminate(Node::NODE_NORMAL_TERMINATION,"terminated by signal");
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else exit(0);
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}
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#endif
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#ifdef __WINDOWS__
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static BOOL WINAPI _handlerRoutine(DWORD dwCtrlType)
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{
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switch(dwCtrlType) {
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case CTRL_C_EVENT:
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case CTRL_BREAK_EVENT:
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case CTRL_CLOSE_EVENT:
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case CTRL_SHUTDOWN_EVENT:
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Node *n = node;
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if (n)
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n->terminate(Node::NODE_NORMAL_TERMINATION,"terminated by signal");
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return TRUE;
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}
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return FALSE;
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}
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#endif
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#ifdef __WINDOWS__
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int _tmain(int argc, _TCHAR* argv[])
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#else
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int main(int argc,char **argv)
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#endif
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{
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#ifdef __UNIX_LIKE__
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signal(SIGHUP,SIG_IGN);
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signal(SIGPIPE,SIG_IGN);
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signal(SIGUSR1,SIG_IGN);
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signal(SIGUSR2,SIG_IGN);
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signal(SIGALRM,SIG_IGN);
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signal(SIGINT,&sighandlerQuit);
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signal(SIGTERM,&sighandlerQuit);
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signal(SIGQUIT,&sighandlerQuit);
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#endif
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#ifdef __WINDOWS__
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WSADATA wsaData;
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WSAStartup(MAKEWORD(2,2),&wsaData);
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SetConsoleCtrlHandler(&_handlerRoutine,TRUE);
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#endif
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if ((strstr(argv[0],"zerotier-cli"))||(strstr(argv[0],"ZEROTIER-CLI")))
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return ZeroTierCLI::main(argc,argv);
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const char *homeDir = (const char *)0;
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unsigned int port = 0;
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unsigned int controlPort = 0;
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for(int i=1;i<argc;++i) {
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if (argv[i][0] == '-') {
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switch(argv[i][1]) {
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case 'p':
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port = Utils::strToUInt(argv[i] + 2);
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if (port > 65535) {
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printHelp(argv[0],stderr);
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return -1;
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}
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break;
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case 'c':
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controlPort = Utils::strToUInt(argv[i] + 2);
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if (controlPort > 65535) {
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printHelp(argv[0],stderr);
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return -1;
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}
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break;
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case 'q':
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if (argv[i][2]) {
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printHelp(argv[0],stderr);
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return 0;
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} else return ZeroTierCLI::main(argc,argv);
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case 'h':
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case '?':
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default:
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printHelp(argv[0],stderr);
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return 0;
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}
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} else {
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if (homeDir) {
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printHelp(argv[0],stderr);
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return 0;
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}
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homeDir = argv[i];
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break;
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}
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}
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if ((!homeDir)||(strlen(homeDir) == 0))
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homeDir = ZT_DEFAULTS.defaultHomePath.c_str();
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#ifdef __UNIX_LIKE__
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mkdir(homeDir,0755); // will fail if it already exists
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{
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char pidpath[4096];
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Utils::snprintf(pidpath,sizeof(pidpath),"%s/zerotier-one.pid",homeDir);
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FILE *pf = fopen(pidpath,"w");
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if (pf) {
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fprintf(pf,"%ld",(long)getpid());
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fclose(pf);
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}
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}
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#endif
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int exitCode = 0;
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try {
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node = new Node(homeDir,port,controlPort);
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const char *termReason = (char *)0;
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switch(node->run()) {
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case Node::NODE_UNRECOVERABLE_ERROR:
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exitCode = -1;
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termReason = node->reasonForTermination();
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fprintf(stderr,"%s: abnormal termination: %s\n",argv[0],(termReason) ? termReason : "(unknown reason)");
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break;
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default:
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break;
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}
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delete node;
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node = (Node *)0;
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} catch ( ... ) {}
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#ifdef __UNIX_LIKE__
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{
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char pidpath[4096];
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Utils::snprintf(pidpath,sizeof(pidpath),"%s/zerotier-one.pid",homeDir);
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Utils::rm(pidpath);
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}
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#endif
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return exitCode;
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}
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