ExternalVendorCode/ZeroTierOne
1
0
Fork 0
mirror of https://github.com/zerotier/ZeroTierOne.git synced 2025-01-03 03:36:41 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Merge branch 'adamierymenko-dev' into android-jni

Browse Source
This commit is contained in:
Grant Limberg 2015-04-27 17:24:55 -07:00
commit 73d68c0c98
6 changed files with 644 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

136
attic/http-tunnel-proxy.js Executable file
View File

@ -0,0 +1,136 @@
#!/usr/bin/env node
// Note: this is unfinished and not currently used. Stashed in case we resurrect this idea.
var UDP_PORT_START = 9994;
var UDP_PORT_COUNT = 16384;
var HTTP_PORT = 8080;
var LONG_POLLING_TIMEOUT = 25000;
var http = require('http');
var dgram = require('dgram');
// clients[token] = [ most recent HTTP activity, assigned UDP socket ]
var clients = {};
// GETs[token] = [ [ request, timestamp ], ... ]
var GETs = {};
// mappings[localPort+'/'+remoteIp+'/'+remotePort] = { ZT source: [ token ] }
var mappings = {};
// Array of available UDP sockets to assign randomly to clients
var udpSocketPool = [];
function onIncomingUdp(socket,message,remoteIp,remotePort)
{
if (message.length > 16) {
var mappingKey = socket.localPort + '/' + remoteIp + '/' + remotePort;
var mapping = mappings[mappingKey];
if (mapping) {
var ztDestination = message.readUIntBE(8,5);
if (ztDestination in mapping) {
}
}
}
}
function onOutgoingUdp(token,socket,message,remoteIp,remotePort)
{
if (message.length > 16) {
var ztDestination = message.readUIntBE(8,5);
var ztSource = (message.length >= 28) ? message.readUIntBE(13,5) ? 0;
if ((ztSource & 0xff00000000) == 0xff00000000) // fragment
ztSource = 0;
if ((ztDestination !== 0)&&((ztDestination & 0xff00000000) !== 0xff00000000)) {
socket.send(message,0,message.length,remotePort,remoteIp);
}
}
}
function doHousekeeping()
{
}
for(var udpPort=UDP_PORT_START;udpPort<(UDP_PORT_START+UDP_PORT_COUNT)++udpPort) {
var socket = dgram.createSocket('udp4',function(message,rinfo) { onIncomingUdp(socket,message,rinfo.address,rinfo.port); });
socket.on('listening',function() {
console.log('Listening on '+socket.localPort);
udpSocketPool.push(socket);
}
socket.on('error',function() {
console.log('Error listening on '+socket.localPort);
socket.close();
})
socket.bind(udpPort);
}
server = http.createServer(function(request,response) {
console.log(request.socket.remoteAddress+" "+request.method+" "+request.url);
try {
// /<proxy token>/<ignored>/...
var urlSp = request.url.split('/');
if ((urlSp.length >= 3)&&(udpSocketPool.length > 0)) {
var token = urlSp[1]; // urlSp[0] == '' since URLs start with /
if (token.length >= 8) {
var client = clients[token];
if (!Array.isArray(client)) {
client = [ Date.now(),udpSocketPool[Math.floor(Math.random() * udpSocketPool.length)] ];
clients[token] = client;
} else client[0] = Date.now();
if (request.method === "GET") {
// /<proxy token>/<ignored> ... waits via old skool long polling
} else if (request.method === "POST") {
// /<proxy token>/<ignored>/<dest ip>/<dest port>
if (urlSp.length === 5) {
var ipSp = urlSp[3].split('.');
var port = parseInt(urlSp[4],10);
// Note: do not allow the use of this proxy to talk to privileged ports
if ((ipSp.length === 4)&&(port >= 1024)&&(port <= 0xffff)) {
var ip = [ parseInt(ipSp[0]),parseInt(ipSp[1]),parseInt(ipSp[2]),parseInt(ipSp[3]) ];
if ( (ip[0] > 0)
&&(ip[0] < 240)
&&(ip[0] !== 127)
&&(ip[1] >= 0)
&&(ip[1] <= 255)
&&(ip[2] >= 0)
&&(ip[2] <= 255)
&&(ip[3] > 0)
&&(ip[3] < 255) ) {
var postData = null;
request.on('data',function(chunk) {
postData = ((postData === null) ? chunk : Buffer.concat([ postData,chunk ]));
});
request.on('end',function() {
if (postData !== null)
onOutgoingUdp(token,client[1],postData,urlSp[3],port);
response.writeHead(200,{'Content-Length':0,'Pragma':'no-cache','Cache-Control':'no-cache'});
response.end();
});
return; // no 400 -- read from stream
} // else 400
} // else 400
} // else 400
} // else 400
} // else 400
} // else 400
} catch (e) {} // 400
response.writeHead(400,{'Content-Length':0,'Pragma':'no-cache','Cache-Control':'no-cache'});
response.end();
return;
});
setInterval(doHousekeeping,5000);
server.setTimeout(120000);
server.listen(HTTP_PORT);

3
node/Switch.cpp
View File

@ -296,6 +296,9 @@ bool Switch::unite(const Address &p1,const Address &p2,bool force)
if (!(cg.first))
return false;
if (cg.first.ipScope() != cg.second.ipScope())
return false;
// Addresses are sorted in key for last unite attempt map for order
// invariant lookup: (p1,p2) == (p2,p1)
Array<Address,2> uniteKey;

2
service/OneService.cpp
View File

@ -158,6 +158,7 @@ public:
_v4UdpSocket = _phy.udpBind((const struct sockaddr *)&in4,this,131072);
if (!_v4UdpSocket)
throw std::runtime_error("cannot bind to port (UDP/IPv4)");
in4.sin_addr.s_addr = Utils::hton((uint32_t)0x7f000001); // right now we just listen for TCP @localhost
_v4TcpListenSocket = _phy.tcpListen((const struct sockaddr *)&in4,this);
if (!_v4TcpListenSocket) {
_phy.close(_v4UdpSocket);
@ -168,6 +169,7 @@ public:
in6.sin6_family = AF_INET6;
in6.sin6_port = in4.sin_port;
_v6UdpSocket = _phy.udpBind((const struct sockaddr *)&in6,this,131072);
in6.sin6_addr.s6_addr[15] = 1; // listen for TCP only at localhost
_v6TcpListenSocket = _phy.tcpListen((const struct sockaddr *)&in6,this);
char portstr[64];

4
tcp-proxy/README.md Normal file
View File

@ -0,0 +1,4 @@
TCP Proxy Server
======
This is the TCP proxy server we run for TCP tunneling from peers behind fascist NATs. Regular users won't have much use for this.

322
tcp-proxy/tcp-proxy.cpp Normal file
View File

@ -0,0 +1,322 @@
/*
* ZeroTier One - Network Virtualization Everywhere
* Copyright (C) 2011-2015 ZeroTier, Inc.
*
* 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/
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <stdint.h>
#include <unistd.h>
#include <signal.h>
#include <map>
#include <set>
#include <string>
#include <algorithm>
#include <vector>
#include "../osdep/Phy.hpp"
#define ZT_TCP_PROXY_UDP_POOL_SIZE 1024
#define ZT_TCP_PROXY_UDP_POOL_START_PORT 10000
#define ZT_TCP_PROXY_CONNECTION_TIMEOUT_SECONDS 300
using namespace ZeroTier;
/*
* This implements a simple packet encapsulation that is designed to look like
* a TLS connection. It's not a TLS connection, but it sends TLS format record
* headers. It could be extended in the future to implement a fake TLS
* handshake.
*
* At the moment, each packet is just made to look like TLS application data:
* <[1] TLS content type> - currently 0x17 for "application data"
* <[1] TLS major version> - currently 0x03 for TLS 1.2
* <[1] TLS minor version> - currently 0x03 for TLS 1.2
* <[2] payload length> - 16-bit length of payload in bytes
* <[...] payload> - Message payload
*
* The primary purpose of TCP sockets is to work over ports like HTTPS(443),
* allowing users behind particularly fascist firewalls to at least reach
* ZeroTier's supernodes. UDP is the preferred method of communication as
* encapsulating L2 and L3 protocols over TCP is inherently inefficient
* due to double-ACKs. So TCP is only used as a fallback.
*
* New clients send a HELLO message consisting of a 4-byte message (too small
* for a ZT packet) containing:
* <[1] ZeroTier major version>
* <[1] minor version>
* <[2] revision>
*
* Clients that have send a HELLO and that have a new enough version prepend
* each payload with the remote IP the message is destined for. This is in
* the same format as the IP portion of ZeroTier HELLO packets.
*/
struct TcpProxyService;
struct TcpProxyService
{
Phy<TcpProxyService *> *phy;
PhySocket *udpPool[ZT_TCP_PROXY_UDP_POOL_SIZE];
struct Client
{
char tcpReadBuf[131072];
char tcpWriteBuf[131072];
unsigned long tcpWritePtr;
unsigned long tcpReadPtr;
PhySocket *tcp;
PhySocket *assignedUdp;
time_t lastActivity;
bool newVersion;
};
std::map< PhySocket *,Client > clients;
struct ReverseMappingKey
{
uint64_t sourceZTAddress;
PhySocket *sendingUdpSocket;
uint32_t destIp;
unsigned int destPort;
ReverseMappingKey() {}
ReverseMappingKey(uint64_t zt,PhySocket *s,uint32_t ip,unsigned int port) : sourceZTAddress(zt),sendingUdpSocket(s),destIp(ip),destPort(port) {}
inline bool operator<(const ReverseMappingKey &k) const throw() { return (memcmp((const void *)this,(const void *)&k,sizeof(ReverseMappingKey)) < 0); }
inline bool operator==(const ReverseMappingKey &k) const throw() { return (memcmp((const void *)this,(const void *)&k,sizeof(ReverseMappingKey)) == 0); }
};
std::map< ReverseMappingKey,Client * > reverseMappings;
void phyOnDatagram(PhySocket *sock,void **uptr,const struct sockaddr *from,void *data,unsigned long len)
{
if ((from->sa_family == AF_INET)&&(len > 16)&&(len < 2048)) {
const uint64_t destZt = (
(((uint64_t)(((const unsigned char *)data)[8])) << 32) |
(((uint64_t)(((const unsigned char *)data)[9])) << 24) |
(((uint64_t)(((const unsigned char *)data)[10])) << 16) |
(((uint64_t)(((const unsigned char *)data)[11])) << 8) |
((uint64_t)(((const unsigned char *)data)[12])) );
const uint32_t fromIp = ((const struct sockaddr_in *)from)->sin_addr.s_addr;
const unsigned int fromPort = ntohs(((const struct sockaddr_in *)from)->sin_port);
std::map< ReverseMappingKey,Client * >::iterator rm(reverseMappings.find(ReverseMappingKey(destZt,sock,fromIp,fromPort)));
if (rm != reverseMappings.end()) {
Client &c = *(rm->second);
unsigned long mlen = len;
if (c.newVersion)
mlen += 7; // new clients get IP info
if ((c.tcpWritePtr + 5 + mlen) <= sizeof(c.tcpWriteBuf)) {
if (!c.tcpWritePtr)
phy->tcpSetNotifyWritable(c.tcp,true);
c.tcpWriteBuf[c.tcpWritePtr++] = 0x17; // look like TLS data
c.tcpWriteBuf[c.tcpWritePtr++] = 0x03; // look like TLS 1.2
c.tcpWriteBuf[c.tcpWritePtr++] = 0x03; // look like TLS 1.2
c.tcpWriteBuf[c.tcpWritePtr++] = (char)((mlen >> 8) & 0xff);
c.tcpWriteBuf[c.tcpWritePtr++] = (char)(mlen & 0xff);
if (c.newVersion) {
c.tcpWriteBuf[c.tcpWritePtr++] = (char)4; // IPv4
*((uint32_t *)(c.tcpWriteBuf + c.tcpWritePtr)) = fromIp;
c.tcpWritePtr += 4;
c.tcpWriteBuf[c.tcpWritePtr++] = (char)((fromPort >> 8) & 0xff);
c.tcpWriteBuf[c.tcpWritePtr++] = (char)(fromPort & 0xff);
}
for(unsigned long i=0;i<len;++i)
c.tcpWriteBuf[c.tcpWritePtr++] = ((const char *)data)[i];
}
}
}
}
void phyOnTcpConnect(PhySocket *sock,void **uptr,bool success)
{
// unused, we don't initiate
}
void phyOnTcpAccept(PhySocket *sockL,PhySocket *sockN,void **uptrL,void **uptrN,const struct sockaddr *from)
{
Client &c = clients[sockN];
c.tcpWritePtr = 0;
c.tcpReadPtr = 0;
c.tcp = sockN;
c.assignedUdp = udpPool[rand() % ZT_TCP_PROXY_UDP_POOL_SIZE];
c.lastActivity = time((time_t *)0);
c.newVersion = false;
*uptrN = (void *)&c;
}
void phyOnTcpClose(PhySocket *sock,void **uptr)
{
for(std::map< ReverseMappingKey,Client * >::iterator rm(reverseMappings.begin());rm!=reverseMappings.end();) {
if (rm->second == (Client *)*uptr)
reverseMappings.erase(rm++);
else ++rm;
}
clients.erase(sock);
}
void phyOnTcpData(PhySocket *sock,void **uptr,void *data,unsigned long len)
{
Client &c = *((Client *)*uptr);
c.lastActivity = time((time_t *)0);
for(unsigned long i=0;i<len;++i) {
if (c.tcpReadPtr >= sizeof(c.tcpReadBuf)) {
phy->close(sock);
return;
}
c.tcpReadBuf[c.tcpReadPtr++] = ((const char *)data)[i];
if (c.tcpReadPtr >= 5) {
unsigned long mlen = ( ((((unsigned long)c.tcpReadBuf[3]) & 0xff) << 8) | (((unsigned long)c.tcpReadBuf[4]) & 0xff) );
if (c.tcpReadPtr >= (mlen + 5)) {
if (mlen == 4) {
// Right now just sending this means the client is 'new enough' for the IP header
c.newVersion = true;
} else if (mlen >= 7) {
char *payload = c.tcpReadBuf + 5;
unsigned long payloadLen = mlen;
struct sockaddr_in dest;
memset(&dest,0,sizeof(dest));
if (c.newVersion) {
if (*payload == (char)4) {
// New clients tell us where their packets go.
++payload;
dest.sin_family = AF_INET;
dest.sin_addr.s_addr = *((uint32_t *)payload);
payload += 4;
dest.sin_port = *((uint16_t *)payload); // will be in network byte order already
payload += 2;
payloadLen -= 7;
}
} else {
// For old clients we will just proxy everything to a local ZT instance. The
// fact that this will come from 127.0.0.1 will in turn prevent that instance
// from doing unite() with us. It'll just forward. There will not be many of
// these.
dest.sin_family = AF_INET;
dest.sin_addr.s_addr = htonl(0x7f000001); // 127.0.0.1
dest.sin_port = htons(9993);
}
// Note: we do not relay to privileged ports... just an abuse prevention rule.
if ((ntohs(dest.sin_port) > 1024)&&(payloadLen >= 16)) {
if ((payloadLen >= 28)&&(payload[13] != (char)0xff)) {
// Learn reverse mappings -- we will route replies to these packets
// back to their sending TCP socket. They're on a first come first
// served basis.
const uint64_t sourceZt = (
(((uint64_t)(((const unsigned char *)payload)[13])) << 32) |
(((uint64_t)(((const unsigned char *)payload)[14])) << 24) |
(((uint64_t)(((const unsigned char *)payload)[15])) << 16) |
(((uint64_t)(((const unsigned char *)payload)[16])) << 8) |
((uint64_t)(((const unsigned char *)payload)[17])) );
ReverseMappingKey k(sourceZt,c.assignedUdp,dest.sin_addr.s_addr,ntohl(dest.sin_port));
if (reverseMappings.count(k) == 0)
reverseMappings[k] = &c;
}
phy->udpSend(c.assignedUdp,(const struct sockaddr *)&dest,payload,payloadLen);
}
}
memmove(c.tcpReadBuf,c.tcpReadBuf + (mlen + 5),c.tcpReadPtr -= (mlen + 5));
}
}
}
}
void phyOnTcpWritable(PhySocket *sock,void **uptr)
{
Client &c = *((Client *)*uptr);
if (c.tcpWritePtr) {
long n = phy->tcpSend(sock,c.tcpWriteBuf,c.tcpWritePtr);
if (n > 0) {
memmove(c.tcpWriteBuf,c.tcpWriteBuf + n,c.tcpWritePtr -= (unsigned long)n);
if (!c.tcpWritePtr)
phy->tcpSetNotifyWritable(sock,false);
}
} else phy->tcpSetNotifyWritable(sock,false);
}
void doHousekeeping()
{
std::vector<PhySocket *> toClose;
time_t now = time((time_t *)0);
for(std::map< PhySocket *,Client >::iterator c(clients.begin());c!=clients.end();++c) {
if ((now - c->second.lastActivity) >= ZT_TCP_PROXY_CONNECTION_TIMEOUT_SECONDS)
toClose.push_back(c->first);
}
for(std::vector<PhySocket *>::iterator s(toClose.begin());s!=toClose.end();++s)
phy->close(*s); // will call phyOnTcpClose() which does cleanup
}
};
int main(int argc,char **argv)
{
signal(SIGPIPE,SIG_IGN);
signal(SIGHUP,SIG_IGN);
srand(time((time_t *)0));
TcpProxyService svc;
Phy<TcpProxyService *> phy(&svc,true);
svc.phy = &phy;
{
int poolSize = 0;
for(unsigned int p=ZT_TCP_PROXY_UDP_POOL_START_PORT;((poolSize<ZT_TCP_PROXY_UDP_POOL_SIZE)&&(p<=65535));++p) {
struct sockaddr_in laddr;
memset(&laddr,0,sizeof(laddr));
laddr.sin_family = AF_INET;
laddr.sin_port = htons((uint16_t)p);
PhySocket *s = phy.udpBind((const struct sockaddr *)&laddr);
if (s)
svc.udpPool[poolSize++] = s;
}
if (poolSize < ZT_TCP_PROXY_UDP_POOL_SIZE) {
fprintf(stderr,"%s: fatal error: cannot bind %d UDP ports\n",argv[0],ZT_TCP_PROXY_UDP_POOL_SIZE);
return 1;
}
}
time_t lastDidHousekeeping = time((time_t *)0);
for(;;) {
phy.poll(120000);
time_t now = time((time_t *)0);
if ((now - lastDidHousekeeping) > 120) {
lastDidHousekeeping = now;
svc.doHousekeeping();
}
}
}

177
updater.cpp Normal file
View File

@ -0,0 +1,177 @@
/*
* ZeroTier One - Network Virtualization Everywhere
* Copyright (C) 2011-2015 ZeroTier, Inc.
*
* 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/
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <time.h>
#include <string>
#include <vector>
#include <map>
#include <algorithm>
#include <stdexcept>
#include "version.h"
#include "include/ZeroTierOne.h"
#include "node/Constants.hpp"
#ifdef __WINDOWS__
#include <WinSock2.h>
#include <Windows.h>
#include <tchar.h>
#include <wchar.h>
#include <lmcons.h>
#include <newdev.h>
#include <atlbase.h>
#else
#include <unistd.h>
#include <pwd.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <signal.h>
#endif
#include "node/Utils.hpp"
#include "node/Address.hpp"
#include "node/Dictionary.hpp"
#include "node/Identity.hpp"
#include "osdep/OSUtils.hpp"
#include "osdep/Http.hpp"
using namespace ZeroTier;
namespace {
static std::map< Address,Identity > updateAuthorities()
{
std::map< Address,Identity > ua;
{ // 0001
Identity id("e9bc3707b5:0:c4cef17bde99eadf9748c4fd11b9b06dc5cd8eb429227811d2c336e6b96a8d329e8abd0a4f45e47fe1bcebf878c004c822d952ff77fc2833af4c74e65985c435");
ua[id.address()] = id;
}
{ // 0002
Identity id("56520eaf93:0:7d858b47988b34399a9a31136de07b46104d7edb4a98fa1d6da3e583d3a33e48be531532b886f0b12cd16794a66ab9220749ec5112cbe96296b18fe0cc79ca05");
ua[id.address()] = id;
}
{ // 0003
Identity id("7c195de2e0:0:9f659071c960f9b0f0b96f9f9ecdaa27c7295feed9c79b7db6eedcc11feb705e6dd85c70fa21655204d24c897865b99eb946b753a2bbcf2be5f5e006ae618c54");
ua[id.address()] = id;
}
{ // 0004
Identity id("415f4cfde7:0:54118e87777b0ea5d922c10b337c4f4bd1db7141845bd54004b3255551a6e356ba6b9e1e85357dbfafc45630b8faa2ebf992f31479e9005f0472685f2d8cbd6e");
ua[id.address()] = id;
}
return ua;
}
static bool validateUpdate(
const void *data,
unsigned int len,
const Address &signedBy,
const std::string &signature)
{
std::map< Address,Identity > ua(updateAuthorities());
std::map< Address,Identity >::const_iterator updateAuthority = ua.find(signedBy);
if (updateAuthority == ua.end())
return false;
return updateAuthority->second.verify(data,len,signature.data(),(unsigned int)signature.length());
}
/*
static inline const char *updateUrl()
{
#if defined(__LINUX__) && ( defined(__i386__) || defined(__x86_64) || defined(__x86_64__) || defined(__amd64) || defined(__i386) )
if (sizeof(void *) == 8)
return "http://download.zerotier.com/ZeroTierOneInstaller-linux-x64-LATEST.nfo";
else return "http://download.zerotier.com/ZeroTierOneInstaller-linux-x86-LATEST.nfo";
#define GOT_UPDATE_URL
#endif
#ifdef __APPLE__
return "http://download.zerotier.com/ZeroTierOneInstaller-mac-combined-LATEST.nfo";
#define GOT_UPDATE_URL
#endif
#ifdef __WINDOWS__
return "http://download.zerotier.com/ZeroTierOneInstaller-windows-intel-LATEST.nfo";
#define GOT_UPDATE_URL
#endif
#ifndef GOT_UPDATE_URL
return "";
#endif
}
*/
static const char *parseUpdateNfo(
const char *nfoText,
unsigned int &vMajor,
unsigned int &vMinor,
unsigned int &vRevision,
Address &signedBy,
std::string &signature,
std::string &url)
{
try {
Dictionary nfo(nfoText);
vMajor = Utils::strToUInt(nfo.get("vMajor").c_str());
vMinor = Utils::strToUInt(nfo.get("vMinor").c_str());
vRevision = Utils::strToUInt(nfo.get("vRevision").c_str());
signedBy = nfo.get("signedBy");
signature = Utils::unhex(nfo.get("ed25519"));
url = nfo.get("url");
if (signature.length() != ZT_C25519_SIGNATURE_LEN)
return "bad ed25519 signature, invalid length";
if ((url.length() <= 7)||(url.substr(0,7) != "http://"))
return "invalid URL, must begin with http://";
return (const char *)0;
} catch ( ... ) {
return "invalid NFO file format or one or more required fields missing";
}
}
} // anonymous namespace
#ifdef __WINDOWS__
int _tmain(int argc, _TCHAR* argv[])
#else
int main(int argc,char **argv)
#endif
{
#ifdef __WINDOWS__
WSADATA wsaData;
WSAStartup(MAKEWORD(2,2),&wsaData);
#endif
return 0;
}