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ZeroTierOne/service/ControlPlane.cpp
Adam Ierymenko 12b4646ce8 Prettify JSON output.
2015-04-16 12:06:40 -07:00

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/*
* 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 "ControlPlane.hpp"
#include "OneService.hpp"
#include "../version.h"
#include "../include/ZeroTierOne.h"
#include "../ext/http-parser/http_parser.h"
#include "../node/InetAddress.hpp"
#include "../node/Node.hpp"
#include "../node/Utils.hpp"
#define ZT_BUILD_IN_WEB_UI
namespace ZeroTier {
static std::string _jsonEscape(const char *s)
{
std::string buf;
for(const char *p=s;(*p);++p) {
switch(*p) {
case '\t': buf.append("\\t"); break;
case '\b': buf.append("\\b"); break;
case '\r': buf.append("\\r"); break;
case '\n': buf.append("\\n"); break;
case '\f': buf.append("\\f"); break;
case '"': buf.append("\\\""); break;
case '\\': buf.append("\\\\"); break;
case '/': buf.append("\\/"); break;
default: buf.push_back(*p); break;
}
}
return buf;
}
static std::string _jsonEscape(const std::string &s) { return _jsonEscape(s.c_str()); }
static std::string _jsonEnumerate(const ZT1_MulticastGroup *mg,unsigned int count)
{
std::string buf;
char tmp[128];
buf.push_back('[');
for(unsigned int i=0;i<count;++i) {
if (i > 0)
buf.push_back(',');
Utils::snprintf(tmp,sizeof(tmp),"\"%.2x:%.2x:%.2x:%.2x:%.2x:%.2x\\/%.8lx\"",
(unsigned int)((mg->mac >> 40) & 0xff),
(unsigned int)((mg->mac >> 32) & 0xff),
(unsigned int)((mg->mac >> 24) & 0xff),
(unsigned int)((mg->mac >> 16) & 0xff),
(unsigned int)((mg->mac >> 8) & 0xff),
(unsigned int)(mg->mac & 0xff),
mg->adi);
buf.append(tmp);
}
buf.push_back(']');
return buf;
}
static std::string _jsonEnumerate(const struct sockaddr_storage *ss,unsigned int count)
{
std::string buf;
buf.push_back('[');
for(unsigned int i=0;i<count;++i) {
if (i > 0)
buf.push_back(',');
buf.push_back('"');
buf.append(_jsonEscape(reinterpret_cast<const InetAddress *>(ss)->toString()));
buf.push_back('"');
}
buf.push_back(']');
return buf;
}
static void _jsonAppend(unsigned int depth,std::string &buf,const ZT1_VirtualNetworkConfig *nc,const std::string &portDeviceName)
{
char json[4096];
char prefix[32];
if (depth >= sizeof(prefix)) // sanity check -- shouldn't be possible
return;
for(unsigned int i=0;i<depth;++i)
prefix[i] = '\t';
prefix[depth] = '\0';
const char *nstatus = "",*ntype = "";
switch(nc->status) {
case ZT1_NETWORK_STATUS_REQUESTING_CONFIGURATION: nstatus = "REQUESTING_CONFIGURATION"; break;
case ZT1_NETWORK_STATUS_OK: nstatus = "OK"; break;
case ZT1_NETWORK_STATUS_ACCESS_DENIED: nstatus = "ACCESS_DENIED"; break;
case ZT1_NETWORK_STATUS_NOT_FOUND: nstatus = "NOT_FOUND"; break;
case ZT1_NETWORK_STATUS_PORT_ERROR: nstatus = "PORT_ERROR"; break;
case ZT1_NETWORK_STATUS_CLIENT_TOO_OLD: nstatus = "CLIENT_TOO_OLD"; break;
}
switch(nc->type) {
case ZT1_NETWORK_TYPE_PRIVATE: ntype = "PRIVATE"; break;
case ZT1_NETWORK_TYPE_PUBLIC: ntype = "PUBLIC"; break;
}
Utils::snprintf(json,sizeof(json),
"%s{\n"
"%s\t\"nwid\": \"%.16llx\",\n"
"%s\t\"mac\": \"%.2x:%.2x:%.2x:%.2x:%.2x:%.2x\",\n"
"%s\t\"name\": \"%s\",\n"
"%s\t\"status\": \"%s\",\n"
"%s\t\"type\": \"%s\",\n"
"%s\t\"mtu\": %u,\n"
"%s\t\"dhcp\": %s,\n"
"%s\t\"bridge\": %s,\n"
"%s\t\"broadcastEnabled\": %s,\n"
"%s\t\"portError\": %d,\n"
"%s\t\"netconfRevision\": %lu,\n"
"%s\t\"multicastSubscriptions\": %s,\n"
"%s\t\"assignedAddresses\": %s,\n"
"%s\t\"portDeviceName\": \"%s\"\n"
"%s}",
prefix,
prefix,nc->nwid,
prefix,(unsigned int)((nc->mac >> 40) & 0xff),(unsigned int)((nc->mac >> 32) & 0xff),(unsigned int)((nc->mac >> 24) & 0xff),(unsigned int)((nc->mac >> 16) & 0xff),(unsigned int)((nc->mac >> 8) & 0xff),(unsigned int)(nc->mac & 0xff),
prefix,_jsonEscape(nc->name).c_str(),
prefix,nstatus,
prefix,ntype,
prefix,nc->mtu,
prefix,(nc->dhcp == 0) ? "false" : "true",
prefix,(nc->bridge == 0) ? "false" : "true",
prefix,(nc->broadcastEnabled == 0) ? "false" : "true",
prefix,nc->portError,
prefix,nc->netconfRevision,
prefix,_jsonEnumerate(nc->multicastSubscriptions,nc->multicastSubscriptionCount).c_str(),
prefix,_jsonEnumerate(nc->assignedAddresses,nc->assignedAddressCount).c_str(),
prefix,_jsonEscape(portDeviceName).c_str(),
prefix);
buf.append(json);
}
static std::string _jsonEnumerate(unsigned int depth,const ZT1_PeerPhysicalPath *pp,unsigned int count)
{
char json[1024];
char prefix[32];
if (depth >= sizeof(prefix)) // sanity check -- shouldn't be possible
return std::string();
for(unsigned int i=0;i<depth;++i)
prefix[i] = '\t';
prefix[depth] = '\0';
std::string buf;
for(unsigned int i=0;i<count;++i) {
if (i > 0)
buf.push_back(',');
Utils::snprintf(json,sizeof(json),
"{\n"
"%s\t\"address\": \"%s\",\n"
"%s\t\"lastSend\": %llu,\n"
"%s\t\"lastReceive\": %llu,\n"
"%s\t\"fixed\": %s,\n"
"%s\t\"active\": %s,\n"
"%s\t\"preferred\": %s\n"
"%s}",
prefix,_jsonEscape(reinterpret_cast<const InetAddress *>(&(pp[i].address))->toString()).c_str(),
prefix,pp[i].lastSend,
prefix,pp[i].lastReceive,
prefix,(pp[i].fixed == 0) ? "false" : "true",
prefix,(pp[i].active == 0) ? "false" : "true",
prefix,(pp[i].preferred == 0) ? "false" : "true",
prefix);
buf.append(json);
}
return buf;
}
static void _jsonAppend(unsigned int depth,std::string &buf,const ZT1_Peer *peer)
{
char json[1024];
char prefix[32];
if (depth >= sizeof(prefix)) // sanity check -- shouldn't be possible
return;
for(unsigned int i=0;i<depth;++i)
prefix[i] = '\t';
prefix[depth] = '\0';
const char *prole = "";
switch(peer->role) {
case ZT1_PEER_ROLE_LEAF: prole = "LEAF"; break;
case ZT1_PEER_ROLE_HUB: prole = "HUB"; break;
case ZT1_PEER_ROLE_SUPERNODE: prole = "SUPERNODE"; break;
}
Utils::snprintf(json,sizeof(json),
"%s{\n"
"%s\t\"address\": \"%.10llx\",\n"
"%s\t\"lastUnicastFrame\": %llu,\n"
"%s\t\"lastMulticastFrame\": %llu,\n"
"%s\t\"versionMajor\": %d,\n"
"%s\t\"versionMinor\": %d,\n"
"%s\t\"versionRev\": %d,\n"
"%s\t\"version\": \"%d.%d.%d\",\n"
"%s\t\"latency\": %u,\n"
"%s\t\"role\": \"%s\",\n"
"%s\t\"paths\": [%s]\n"
"%s}",
prefix,
prefix,peer->address,
prefix,peer->lastUnicastFrame,
prefix,peer->lastMulticastFrame,
prefix,peer->versionMajor,
prefix,peer->versionMinor,
prefix,peer->versionRev,
prefix,peer->versionMajor,peer->versionMinor,peer->versionRev,
prefix,peer->latency,
prefix,prole,
prefix,_jsonEnumerate(depth+1,peer->paths,peer->pathCount).c_str(),
prefix);
buf.append(json);
}
ControlPlane::ControlPlane(OneService *svc,Node *n) :
_svc(svc),
_node(n)
{
}
ControlPlane::~ControlPlane()
{
}
unsigned int ControlPlane::handleRequest(
const InetAddress &fromAddress,
unsigned int httpMethod,
const std::string &path,
const std::map<std::string,std::string> &headers,
const std::string &body,
std::string &responseBody,
std::string &responseContentType)
{
char json[1024];
unsigned int scode = 404;
std::vector<std::string> ps(Utils::split(path.c_str(),"/","",""));
std::map<std::string,std::string> urlArgs;
if (!((fromAddress.ipsEqual(InetAddress::LO4))||(fromAddress.ipsEqual(InetAddress::LO6))))
return 403; // Forbidden: we only allow access from localhost right now
/* Note: this is kind of restricted in what it'll take. It does not support
* URL encoding, and /'s in URL args will screw it up. But the only URL args
* it really uses in ?jsonp=funcionName, and otherwise it just takes simple
* paths to simply-named resources. */
if (ps.size() > 0) {
std::size_t qpos = ps[ps.size() - 1].find('?');
if (qpos != std::string::npos) {
std::string args(ps[ps.size() - 1].substr(qpos + 1));
ps[ps.size() - 1] = ps[ps.size() - 1].substr(0,qpos);
std::vector<std::string> asplit(Utils::split(args.c_str(),"&","",""));
for(std::vector<std::string>::iterator a(asplit.begin());a!=asplit.end();++a) {
std::size_t eqpos = a->find('=');
if (eqpos == std::string::npos)
urlArgs[*a] = "";
else urlArgs[a->substr(0,eqpos)] = a->substr(eqpos + 1);
}
}
} else {
ps.push_back(std::string("index.html"));
}
bool isAuth = false;
{
Mutex::Lock _l(_authTokens_m);
std::map<std::string,std::string>::const_iterator ah(headers.find("x-zt1-auth"));
if ((ah != headers.end())&&(_authTokens.count(ah->second) > 0)) {
isAuth = true;
} else {
ah = urlArgs.find("auth");
if ((ah != urlArgs.end())&&(_authTokens.count(ah->second) > 0))
isAuth = true;
}
}
if (httpMethod == HTTP_GET) {
std::string ext;
std::size_t dotIdx = ps[0].find_last_of('.');
if (dotIdx != std::string::npos)
ext = ps[0].substr(dotIdx);
if ((ps.size() == 1)&&(ext.length() >= 2)&&(ext[0] == '.')) {
/* Static web pages can be served without authentication to enable a simple web
* UI. This is still only allowed from approved IP addresses. Anything with a
* dot in the first path element (e.g. foo.html) is considered a static page,
* as nothing in the API is so named. */
#ifdef ZT_BUILD_IN_WEB_UI
if (ext == ".html")
responseContentType = "text/html";
else if (ext == ".js")
responseContentType = "application/javascript";
else if (ext == ".json")
responseContentType = "application/json";
else if (ext == ".css")
responseContentType = "text/css";
else if (ext == ".png")
responseContentType = "image/png";
else if (ext == ".jpg")
responseContentType = "image/jpeg";
else if (ext == ".gif")
responseContentType = "image/gif";
else if (ext == ".txt")
responseContentType = "text/plain";
else if (ext == ".xml")
responseContentType = "text/xml";
else if (ext == ".svg")
responseContentType = "image/svg+xml";
else responseContentType = "application/octet-stream";
responseBody = "<html><body>Hello World!</body></html>";
scode = 200;
#endif // ZT_BUILD_IN_WEB_UI
} else if (isAuth) {
/* Things that require authentication -- a.k.a. everything but static web app pages. */
if (ps[0] == "status") {
responseContentType = "application/json";
ZT1_NodeStatus status;
_node->status(&status);
Utils::snprintf(json,sizeof(json),
"{\n"
"\t\"address\":\"%.10llx\",\n"
"\t\"publicIdentity\":\"%s\",\n"
"\t\"online\":%s,\n"
"\t\"versionMajor\":%d,\n"
"\t\"versionMinor\":%d,\n"
"\t\"versionRev\":%d,\n"
"\t\"version\":\"%d.%d.%d\"\n"
"}\n",
status.address,
status.publicIdentity,
(status.online) ? "true" : "false",
ZEROTIER_ONE_VERSION_MAJOR,
ZEROTIER_ONE_VERSION_MINOR,
ZEROTIER_ONE_VERSION_REVISION,
ZEROTIER_ONE_VERSION_MAJOR,ZEROTIER_ONE_VERSION_MINOR,ZEROTIER_ONE_VERSION_REVISION);
responseBody = json;
scode = 200;
} else if (ps[0] == "config") {
responseContentType = "application/json";
responseBody = "{}"; // TODO
scode = 200;
} else if (ps[0] == "network") {
ZT1_VirtualNetworkList *nws = _node->networks();
if (nws) {
if (ps.size() == 1) {
// Return [array] of all networks
responseContentType = "application/json";
responseBody = "[\n";
for(unsigned long i=0;i<nws->networkCount;++i) {
if (i > 0)
responseBody.append(",");
_jsonAppend(1,responseBody,&(nws->networks[i]),_svc->portDeviceName(nws->networks[i].nwid));
}
responseBody.append("\n]\n");
scode = 200;
} else if (ps.size() == 2) {
// Return a single network by ID or 404 if not found
uint64_t wantnw = Utils::hexStrToU64(ps[1].c_str());
for(unsigned long i=0;i<nws->networkCount;++i) {
if (nws->networks[i].nwid == wantnw) {
responseContentType = "application/json";
_jsonAppend(0,responseBody,&(nws->networks[i]),_svc->portDeviceName(nws->networks[i].nwid));
responseBody.push_back('\n');
scode = 200;
break;
}
}
} // else 404
_node->freeQueryResult((void *)nws);
} else scode = 500;
} else if (ps[0] == "peer") {
ZT1_PeerList *pl = _node->peers();
if (pl) {
if (ps.size() == 1) {
// Return [array] of all peers
responseContentType = "application/json";
responseBody = "[\n";
for(unsigned long i=0;i<pl->peerCount;++i) {
if (i > 0)
responseBody.append(",\n");
_jsonAppend(1,responseBody,&(pl->peers[i]));
}
responseBody.append("\n]\n");
scode = 200;
} else if (ps.size() == 2) {
// Return a single peer by ID or 404 if not found
uint64_t wantp = Utils::hexStrToU64(ps[1].c_str());
for(unsigned long i=0;i<pl->peerCount;++i) {
if (pl->peers[i].address == wantp) {
responseContentType = "application/json";
_jsonAppend(0,responseBody,&(pl->peers[i]));
responseBody.push_back('\n');
scode = 200;
break;
}
}
} // else 404
_node->freeQueryResult((void *)pl);
} else scode = 500;
} // else 404
} else scode = 401; // isAuth == false
} else if ((httpMethod == HTTP_POST)||(httpMethod == HTTP_PUT)) {
if (isAuth) {
if (ps[0] == "config") {
// TODO
} else if (ps[0] == "network") {
if ((ps.size() > 1)&&(ps[1] == "controller")) {
// TODO
} else {
if (ps.size() == 2) {
uint64_t wantnw = Utils::hexStrToU64(ps[1].c_str());
_node->join(wantnw); // does nothing if we are a member
ZT1_VirtualNetworkList *nws = _node->networks();
if (nws) {
for(unsigned long i=0;i<nws->networkCount;++i) {
if (nws->networks[i].nwid == wantnw) {
responseContentType = "application/json";
_jsonAppend(0,responseBody,&(nws->networks[i]),_svc->portDeviceName(nws->networks[i].nwid));
responseBody.push_back('\n');
scode = 200;
break;
}
}
_node->freeQueryResult((void *)nws);
} else scode = 500;
} // else 404
}
} // else 404
} else scode = 401; // isAuth == false
} else if (httpMethod == HTTP_DELETE) {
if (isAuth) {
if (ps[0] == "config") {
// TODO
} else if (ps[0] == "network") {
if ((ps.size() > 1)&&(ps[1] == "controller")) {
// TODO
} else {
ZT1_VirtualNetworkList *nws = _node->networks();
if (nws) {
if (ps.size() == 2) {
uint64_t wantnw = Utils::hexStrToU64(ps[1].c_str());
for(unsigned long i=0;i<nws->networkCount;++i) {
if (nws->networks[i].nwid == wantnw) {
_node->leave(wantnw);
responseBody = "true";
responseContentType = "application/json";
scode = 200;
break;
}
}
} // else 404
_node->freeQueryResult((void *)nws);
} else scode = 500;
}
} // else 404
} else {
scode = 401; // isAuth = false
}
} else {
scode = 400;
responseBody = "Method not supported.";
}
// Wrap result in jsonp function call if the user included a jsonp= url argument.
// Also double-check isAuth since it feels like the right thing to do.
std::map<std::string,std::string>::const_iterator jsonp(urlArgs.find("jsonp"));
if ((isAuth)&&(jsonp != urlArgs.end())&&(responseContentType == "application/json")) {
if (responseBody.length() > 0)
responseBody = jsonp->second + "(" + responseBody + ");";
else responseBody = jsonp->second + "(null);";
responseContentType = "application/javascript";
}
return scode;
}
} // namespace ZeroTier
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