Rename netconf-plugin subdir.

2 files changed, 303 insertions, 0 deletions

diff --git a/netconf-service/Makefile b/netconf-service/Makefile
new file mode 100644
index 00000000..bd6b052c
--- /dev/null
+++ b/netconf-service/Makefile
@@ -0,0 +1,6 @@
+all:
+	gcc -O6 -c ../ext/lz4/lz4hc.c ../ext/lz4/lz4.c
+	g++ -DZT_OSNAME="linux" -DZT_ARCH="x86_64" -I/usr/include/mysql -I../ext/bin/libcrypto/include -O -o netconf.service netconf.cpp ../node/Utils.cpp ../node/Identity.cpp ../node/EllipticCurveKeyPair.cpp ../node/Salsa20.cpp ../node/HMAC.cpp lz4.o lz4hc.o ../ext/bin/libcrypto/linux-x86_64/libcrypto.a -lmysqlpp
+
+clean:
+	rm -f *.o netconf.service
diff --git a/netconf-service/netconf.cpp b/netconf-service/netconf.cpp
new file mode 100644
index 00000000..a92ff8a0
--- /dev/null
+++ b/netconf-service/netconf.cpp
@@ -0,0 +1,297 @@
+/*
+ * ZeroTier One - Global Peer to Peer Ethernet
+ * Copyright (C) 2012-2013  ZeroTier Networks LLC
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --
+ *
+ * ZeroTier may be used and distributed under the terms of the GPLv3, which
+ * are available at: http://www.gnu.org/licenses/gpl-3.0.html
+ *
+ * If you would like to embed ZeroTier into a commercial application or
+ * redistribute it in a modified binary form, please contact ZeroTier Networks
+ * LLC. Start here: http://www.zerotier.com/
+ */
+
+/*
+ * This is the netconf service. It's currently used only by netconf nodes that
+ * are run by ZeroTier itself. There is nothing to prevent you from running
+ * your own if you wanted to create your own networks outside our system.
+ *
+ * That being said, we'd like to charge for private networks to support
+ * ZeroTier One and future development efforts. So while this software is
+ * open source and we're not going to stop you from sidestepping this, we
+ * do ask -- honor system here -- that you pay for private networks if you
+ * are going to use them for any commercial purpose such as a business VPN
+ * alternative.
+ *
+ * This will at the moment only build on Linux and requires the mysql++
+ * library, which is available here:
+ *
+ * http://tangentsoft.net/mysql++/
+ *
+ * (Packages are available for CentOS via EPEL and for any Debian distro.)
+ *
+ * This program must be built and installed in the services.d subfolder of
+ * the ZeroTier One home folder of the node designated to act as a master
+ * for networks. Doing so will enable the NETWORK_CONFIG_REQUEST protocol
+ * verb.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <arpa/inet.h>
+
+#include <iostream>
+#include <string>
+#include <map>
+#include <list>
+#include <vector>
+#include <algorithm>
+
+#include <mysql++/mysql++.h>
+
+#include "../node/Dictionary.hpp"
+#include "../node/Identity.hpp"
+#include "../node/Utils.hpp"
+
+using namespace ZeroTier;
+using namespace mysqlpp;
+
+static Connection *dbCon = (Connection *)0;
+static char mysqlHost[64],mysqlPort[64],mysqlDatabase[64],mysqlUser[64],mysqlPassword[64];
+
+static void connectOrReconnect()
+{
+	for(;;) {
+		if (dbCon)
+			delete dbCon;
+		dbCon = new Connection(mysqlDatabase,mysqlHost,mysqlUser,mysqlPassword,(unsigned int)strtol(mysqlPort,(char **)0,10));
+		if (dbCon->connected())
+			break;
+		else {
+			fprintf(stderr,"Unable to connect to database server.\n");
+			usleep(1000);
+		}
+	}
+}
+
+int main(int argc,char **argv)
+{
+	{
+		char *ee = getenv("ZT_NETCONF_MYSQL_HOST");
+		if (!ee) {
+			fprintf(stderr,"Missing environment variable: ZT_NETCONF_MYSQL_HOST\n");
+			return -1;
+		}
+		strcpy(mysqlHost,ee);
+		ee = getenv("ZT_NETCONF_MYSQL_PORT");
+		if (!ee)
+			strcpy(mysqlPort,"3306");
+		else strcpy(mysqlPort,ee);
+		ee = getenv("ZT_NETCONF_MYSQL_DATABASE");
+		if (!ee) {
+			fprintf(stderr,"Missing environment variable: ZT_NETCONF_MYSQL_DATABASE\n");
+			return -1;
+		}
+		strcpy(mysqlDatabase,ee);
+		ee = getenv("ZT_NETCONF_MYSQL_USER");
+		if (!ee) {
+			fprintf(stderr,"Missing environment variable: ZT_NETCONF_MYSQL_USER\n");
+			return -1;
+		}
+		strcpy(mysqlUser,ee);
+		ee = getenv("ZT_NETCONF_MYSQL_PASSWORD");
+		if (!ee) {
+			fprintf(stderr,"Missing environment variable: ZT_NETCONF_MYSQL_PASSWORD\n");
+			return -1;
+		}
+		strcpy(mysqlPassword,ee);
+	}
+
+	char buf[4096];
+	std::string dictBuf;
+
+	connectOrReconnect();
+	for(;;) {
+		if (read(STDIN_FILENO,buf,4) != 4) {
+			fprintf(stderr,"Error reading frame size from stdin\n");
+			return -1;
+		}
+		unsigned int fsize = (unsigned int)ntohl(*((const uint32_t *)buf));
+		while (dictBuf.length() < fsize) {
+			int n = (int)read(STDIN_FILENO,buf,std::min((int)sizeof(buf),(int)(fsize - dictBuf.length())));
+			for(int i=0;i<n;++i)
+				dictBuf.push_back(buf[i]);
+		}
+		Dictionary msg(dictBuf);
+		dictBuf = "";
+
+		if (!dbCon->connected())
+			connectOrReconnect();
+
+		try {
+			const std::string &command = msg.get("command");
+			if (command == "config") { // NETWORK_CONFIG_REQUEST packet
+				Identity peerIdentity(msg.get("peerIdentity"));
+				uint64_t nwid = strtoull(msg.get("nwid").c_str(),(char **)0,16);
+				Dictionary meta;
+				if (msg.contains("meta"))
+					meta.fromString(msg.get("meta"));
+
+				// Do quick signature check / sanity check
+				if (!peerIdentity.locallyValidate(false)) {
+					fprintf(stderr,"identity failed signature check: %s",peerIdentity.toString(false).c_str());
+					continue;
+				}
+
+				// Save identity if unknown
+				{
+					Query q = dbCon->query();
+					q << "SELECT identity,identityValidated FROM Node WHERE id = " << peerIdentity.address().toInt();
+					StoreQueryResult rs = q.store();
+					if (rs.num_rows() > 0) {
+						if (rs[0]["identity"] != peerIdentity.toString(false)) {
+							// TODO: handle collisions...
+							continue;
+						} else if ((int)rs[0]["identityValidated"] == 0) {
+							// TODO: launch background validation
+						}
+					} else {
+						q = dbCon->query();
+						uint64_t now = Utils::now();
+						q << "INSERT INTO Node (id,creationTime,lastSeen,identity) VALUES (" << peerIdentity.address().toInt() << "," << now << "," << now << "," << peerIdentity.toString(false) << ")";
+						if (!q.exec()) {
+							fprintf(stderr,"Error inserting Node row for peer %s, aborting netconf request",peerIdentity.address().toString().c_str());
+							continue;
+						}
+						// TODO: launch background validation
+					}
+				}
+
+				bool isOpen = false;
+				{
+					Query q = dbCon->query();
+					q << "SELECT isOpen FROM Network WHERE id = " << nwid;
+					StoreQueryResult rs = q.store();
+					if (rs.num_rows() > 0)
+						isOpen = ((int)rs[0]["isOpen"] > 0);
+				}
+
+				Dictionary netconf;
+
+				netconf["peer"] = peerIdentity.address().toString();
+				sprintf(buf,"%.16llx",(unsigned long long)nwid);
+				netconf["nwid"] = buf;
+				netconf["isOpen"] = (isOpen ? "1" : "0");
+
+				if (!isOpen) {
+					// TODO: handle closed networks, look up private membership,
+					// generate signed cert.
+				}
+
+				std::string ipv4Static,ipv6Static;
+
+				{
+					// Check for IPv4 static assignments
+					Query q = dbCon->query();
+					q << "SELECT INET_NTOA(ip) AS ip,netmaskBits FROM IPv4Static WHERE Node_id = " << peerIdentity.address().toInt() << " AND Network_id = " << nwid;
+					StoreQueryResult rs = q.store();
+					if (rs.num_rows() > 0) {
+						for(int i=0;i<rs.num_rows();++i) {
+							if (ipv4Static.length())
+								ipv4Static.push_back(',');
+							ipv4Static.append(rs[i]["ip"].c_str());
+							ipv4Static.push_back('/');
+							ipv4Static.append(rs[i]["netmaskBits"].c_str());
+						}
+					}
+
+					// Try to auto-assign if there's any auto-assign networks with space
+					// available.
+					if (!ipv4Static.length()) {
+						unsigned char addressBytes[5];
+						peerIdentity.address().copyTo(addressBytes,5);
+
+						q = dbCon->query();
+						q << "SELECT ipNet,netmaskBits FROM IPv4AutoAssign WHERE Network_id = " << nwid;
+						rs = q.store();
+						if (rs.num_rows() > 0) {
+							for(int aaRow=0;aaRow<rs.num_rows();++aaRow) {
+								uint32_t ipNet = (uint32_t)((unsigned long)rs[aaRow]["ipNet"]);
+								unsigned int netmaskBits = (unsigned int)rs[aaRow]["netmaskBits"];
+
+								uint32_t tryIp = (((uint32_t)addressBytes[1]) << 24) |
+								                 (((uint32_t)addressBytes[2]) << 16) |
+								                 (((uint32_t)addressBytes[3]) << 8) |
+								                 ((((uint32_t)addressBytes[4]) % 254) + 1);
+								tryIp &= (0xffffffff >> netmaskBits);
+								tryIp |= ipNet;
+
+								for(int k=0;k<100000;++k) {
+									Query q2 = dbCon->query();
+									q2 << "INSERT INTO IPv4Static (Network_id,Node_id,ip,netmaskBits) VALUES (" << nwid << "," << peerIdentity.address().toInt() << "," << tryIp << "," << netmaskBits << ")";
+									if (q2.exec()) {
+										sprintf(buf,"%u.%u.%u.%u",(unsigned int)((tryIp >> 24) & 0xff),(unsigned int)((tryIp >> 16) & 0xff),(unsigned int)((tryIp >> 8) & 0xff),(unsigned int)(tryIp & 0xff));
+										if (ipv4Static.length())
+											ipv4Static.push_back(',');
+										ipv4Static.append(buf);
+										ipv4Static.push_back('/');
+										sprintf(buf,"%u",netmaskBits);
+										ipv4Static.append(buf);
+										break;
+									} else { // insert will fail if IP is in use due to uniqueness constraints in DB
+										++tryIp;
+										if ((tryIp & 0xff) == 0)
+											tryIp |= 1;
+										tryIp &= (0xffffffff >> netmaskBits);
+										tryIp |= ipNet;
+									}
+								}
+
+								if (ipv4Static.length())
+									break;
+							}
+						}
+					}
+				}
+
+				if (ipv4Static.length())
+					netconf["ipv4Static"] = ipv4Static;
+				if (ipv6Static.length())
+					netconf["ipv6Static"] = ipv6Static;
+
+				Dictionary resp;
+				resp["peer"] = peerIdentity.address().toString();
+				resp["nwid"] = msg.get("nwid");
+				resp["requestId"] = msg.get("requestId");
+				resp["netconf"] = netconf.toString();
+				std::string respm = resp.toString();
+				uint32_t respml = (uint32_t)htonl((uint32_t)respm.length());
+				write(STDOUT_FILENO,&respml,4);
+				write(STDOUT_FILENO,respm.data(),respm.length());
+			}
+		} catch (std::exception &exc) {
+			fprintf(stderr,"unexpected exception handling message: %s",exc.what());
+		} catch ( ... ) {
+			fprintf(stderr,"unexpected exception handling message: unknown exception");
+		}
+	}
+}