ZeroTierOne/service/ControlPlane.cpp

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/*
* ZeroTier One - Network Virtualization Everywhere
2016-01-12 22:04:55 +00:00
* Copyright (C) 2011-2016 ZeroTier, Inc. https://www.zerotier.com/
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*
* 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/>.
*/
#include "ControlPlane.hpp"
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#include "OneService.hpp"
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#include "../version.h"
#include "../include/ZeroTierOne.h"
#ifdef ZT_USE_SYSTEM_HTTP_PARSER
#include <http_parser.h>
#else
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#include "../ext/http-parser/http_parser.h"
#endif
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#include "../ext/json/json.hpp"
#include "../controller/EmbeddedNetworkController.hpp"
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#include "../node/InetAddress.hpp"
#include "../node/Node.hpp"
#include "../node/Utils.hpp"
#include "../osdep/OSUtils.hpp"
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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;
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default: buf.push_back(*p); break;
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}
}
return buf;
}
static std::string _jsonEscape(const std::string &s) { return _jsonEscape(s.c_str()); }
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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[i]))->toString()));
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buf.push_back('"');
}
buf.push_back(']');
return buf;
}
static std::string _jsonEnumerate(const ZT_VirtualNetworkRoute *routes,unsigned int count)
{
std::string buf;
buf.push_back('[');
for(unsigned int i=0;i<count;++i) {
if (i > 0)
buf.push_back(',');
buf.append("{\"target\":\"");
buf.append(_jsonEscape(reinterpret_cast<const InetAddress *>(&(routes[i].target))->toString()));
buf.append("\",\"via\":");
if (routes[i].via.ss_family == routes[i].target.ss_family) {
buf.push_back('"');
buf.append(_jsonEscape(reinterpret_cast<const InetAddress *>(&(routes[i].via))->toIpString()));
buf.append("\",");
} else buf.append("null,");
char tmp[1024];
Utils::snprintf(tmp,sizeof(tmp),"\"flags\":%u,\"metric\":%u}",(unsigned int)routes[i].flags,(unsigned int)routes[i].metric);
buf.append(tmp);
}
buf.push_back(']');
return buf;
}
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static void _jsonAppend(unsigned int depth,std::string &buf,const ZT_VirtualNetworkConfig *nc,const std::string &portDeviceName,const OneService::NetworkSettings &localSettings)
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{
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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';
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const char *nstatus = "",*ntype = "";
switch(nc->status) {
case ZT_NETWORK_STATUS_REQUESTING_CONFIGURATION: nstatus = "REQUESTING_CONFIGURATION"; break;
case ZT_NETWORK_STATUS_OK: nstatus = "OK"; break;
case ZT_NETWORK_STATUS_ACCESS_DENIED: nstatus = "ACCESS_DENIED"; break;
case ZT_NETWORK_STATUS_NOT_FOUND: nstatus = "NOT_FOUND"; break;
case ZT_NETWORK_STATUS_PORT_ERROR: nstatus = "PORT_ERROR"; break;
case ZT_NETWORK_STATUS_CLIENT_TOO_OLD: nstatus = "CLIENT_TOO_OLD"; break;
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}
switch(nc->type) {
case ZT_NETWORK_TYPE_PRIVATE: ntype = "PRIVATE"; break;
case ZT_NETWORK_TYPE_PUBLIC: ntype = "PUBLIC"; break;
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}
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Utils::snprintf(json,sizeof(json),
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"%s{\n"
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"%s\t\"id\": \"%.16llx\",\n"
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"%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\"assignedAddresses\": %s,\n"
"%s\t\"routes\": %s,\n"
"%s\t\"portDeviceName\": \"%s\",\n"
"%s\t\"allowManaged\": %s,\n"
"%s\t\"allowGlobal\": %s,\n"
"%s\t\"allowDefault\": %s\n"
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"%s}",
prefix,
prefix,nc->nwid,
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prefix,nc->nwid,
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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->assignedAddresses,nc->assignedAddressCount).c_str(),
prefix,_jsonEnumerate(nc->routes,nc->routeCount).c_str(),
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prefix,_jsonEscape(portDeviceName).c_str(),
prefix,(localSettings.allowManaged) ? "true" : "false",
prefix,(localSettings.allowGlobal) ? "true" : "false",
prefix,(localSettings.allowDefault) ? "true" : "false",
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prefix);
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buf.append(json);
}
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static std::string _jsonEnumerate(unsigned int depth,const ZT_PeerPhysicalPath *pp,unsigned int count)
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{
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char json[2048];
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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\"active\": %s,\n"
"%s\t\"expired\": %s,\n"
"%s\t\"preferred\": %s,\n"
"%s\t\"trustedPathId\": %llu\n"
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"%s}",
prefix,_jsonEscape(reinterpret_cast<const InetAddress *>(&(pp[i].address))->toString()).c_str(),
prefix,pp[i].lastSend,
prefix,pp[i].lastReceive,
prefix,(pp[i].expired != 0) ? "false" : "true",
prefix,(pp[i].expired == 0) ? "false" : "true",
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prefix,(pp[i].preferred == 0) ? "false" : "true",
prefix,pp[i].trustedPathId,
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prefix);
buf.append(json);
}
return buf;
}
static void _jsonAppend(unsigned int depth,std::string &buf,const ZT_Peer *peer)
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{
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char json[2048];
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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';
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const char *prole = "";
switch(peer->role) {
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case ZT_PEER_ROLE_LEAF: prole = "LEAF"; break;
case ZT_PEER_ROLE_UPSTREAM: prole = "UPSTREAM"; break;
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case ZT_PEER_ROLE_ROOT: prole = "ROOT"; break;
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}
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Utils::snprintf(json,sizeof(json),
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"%s{\n"
"%s\t\"address\": \"%.10llx\",\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->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);
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buf.append(json);
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}
ControlPlane::ControlPlane(OneService *svc,Node *n,const char *uiStaticPath) :
_svc(svc),
_node(n),
_controller((EmbeddedNetworkController *)0),
_uiStaticPath((uiStaticPath) ? uiStaticPath : "")
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{
}
ControlPlane::~ControlPlane()
{
}
unsigned int ControlPlane::handleRequest(
const InetAddress &fromAddress,
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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[8194];
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unsigned int scode = 404;
std::vector<std::string> ps(OSUtils::split(path.c_str(),"/","",""));
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std::map<std::string,std::string> urlArgs;
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Mutex::Lock _l(_lock);
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/* 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(OSUtils::split(args.c_str(),"&","",""));
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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"));
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}
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bool isAuth = false;
{
std::map<std::string,std::string>::const_iterator ah(headers.find("x-zt1-auth"));
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if ((ah != headers.end())&&(_authTokens.count(ah->second) > 0)) {
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isAuth = true;
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} else {
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ah = urlArgs.find("auth");
if ((ah != urlArgs.end())&&(_authTokens.count(ah->second) > 0))
isAuth = true;
}
}
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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] == '.')) {
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/* 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. */
if (_uiStaticPath.length() > 0) {
if (ext == ".html")
responseContentType = "text/html";
else if (ext == ".js")
responseContentType = "application/javascript";
else if (ext == ".jsx")
responseContentType = "text/jsx";
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";
scode = OSUtils::readFile((_uiStaticPath + ZT_PATH_SEPARATOR_S + ps[0]).c_str(),responseBody) ? 200 : 404;
} else {
scode = 404;
}
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} else if (isAuth) {
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/* Things that require authentication -- a.k.a. everything but static web app pages. */
if (ps[0] == "status") {
responseContentType = "application/json";
ZT_NodeStatus status;
_node->status(&status);
std::string clusterJson;
#ifdef ZT_ENABLE_CLUSTER
{
ZT_ClusterStatus cs;
_node->clusterStatus(&cs);
if (cs.clusterSize >= 1) {
char t[1024];
Utils::snprintf(t,sizeof(t),"{\n\t\t\"myId\": %u,\n\t\t\"clusterSize\": %u,\n\t\t\"members\": [",cs.myId,cs.clusterSize);
clusterJson.append(t);
for(unsigned int i=0;i<cs.clusterSize;++i) {
Utils::snprintf(t,sizeof(t),"%s\t\t\t{\n\t\t\t\t\"id\": %u,\n\t\t\t\t\"msSinceLastHeartbeat\": %u,\n\t\t\t\t\"alive\": %s,\n\t\t\t\t\"x\": %d,\n\t\t\t\t\"y\": %d,\n\t\t\t\t\"z\": %d,\n\t\t\t\t\"load\": %llu,\n\t\t\t\t\"peers\": %llu\n\t\t\t}",
((i == 0) ? "\n" : ",\n"),
cs.members[i].id,
cs.members[i].msSinceLastHeartbeat,
(cs.members[i].alive != 0) ? "true" : "false",
cs.members[i].x,
cs.members[i].y,
cs.members[i].z,
cs.members[i].load,
cs.members[i].peers);
clusterJson.append(t);
}
clusterJson.append(" ]\n\t\t}");
}
}
#endif
Utils::snprintf(json,sizeof(json),
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"{\n"
"\t\"address\": \"%.10llx\",\n"
"\t\"publicIdentity\": \"%s\",\n"
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"\t\"worldId\": %llu,\n"
"\t\"worldTimestamp\": %llu,\n"
"\t\"online\": %s,\n"
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"\t\"relayPolicy\": \"%s\",\n"
"\t\"tcpFallbackActive\": %s,\n"
"\t\"versionMajor\": %d,\n"
"\t\"versionMinor\": %d,\n"
"\t\"versionRev\": %d,\n"
"\t\"version\": \"%d.%d.%d\",\n"
"\t\"clock\": %llu,\n"
"\t\"cluster\": %s\n"
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"}\n",
status.address,
status.publicIdentity,
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status.worldId,
status.worldTimestamp,
(status.online) ? "true" : "false",
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((status.relayPolicy == ZT_RELAY_POLICY_ALWAYS) ? "always" : ((status.relayPolicy == ZT_RELAY_POLICY_NEVER) ? "never" : "trusted")),
(_svc->tcpFallbackActive()) ? "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,
(unsigned long long)OSUtils::now(),
((clusterJson.length() > 0) ? clusterJson.c_str() : "null"));
responseBody = json;
scode = 200;
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} else if (ps[0] == "settings") {
responseContentType = "application/json";
responseBody = "{}"; // TODO
scode = 200;
} else if (ps[0] == "network") {
ZT_VirtualNetworkList *nws = _node->networks();
if (nws) {
if (ps.size() == 1) {
// Return [array] of all networks
responseContentType = "application/json";
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responseBody = "[\n";
for(unsigned long i=0;i<nws->networkCount;++i) {
if (i > 0)
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responseBody.append(",");
OneService::NetworkSettings localSettings;
_svc->getNetworkSettings(nws->networks[i].nwid,localSettings);
_jsonAppend(1,responseBody,&(nws->networks[i]),_svc->portDeviceName(nws->networks[i].nwid),localSettings);
}
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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";
OneService::NetworkSettings localSettings;
_svc->getNetworkSettings(nws->networks[i].nwid,localSettings);
_jsonAppend(0,responseBody,&(nws->networks[i]),_svc->portDeviceName(nws->networks[i].nwid),localSettings);
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responseBody.push_back('\n');
scode = 200;
break;
}
}
} // else 404
_node->freeQueryResult((void *)nws);
} else scode = 500;
} else if (ps[0] == "peer") {
ZT_PeerList *pl = _node->peers();
if (pl) {
if (ps.size() == 1) {
// Return [array] of all peers
responseContentType = "application/json";
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responseBody = "[\n";
for(unsigned long i=0;i<pl->peerCount;++i) {
if (i > 0)
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responseBody.append(",\n");
_jsonAppend(1,responseBody,&(pl->peers[i]));
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}
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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";
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_jsonAppend(0,responseBody,&(pl->peers[i]));
responseBody.push_back('\n');
scode = 200;
break;
}
}
} // else 404
_node->freeQueryResult((void *)pl);
} else scode = 500;
} else if (ps[0] == "newIdentity") {
// Return a newly generated ZeroTier identity -- this is primarily for debugging
// and testing to make it easy for automated test scripts to generate test IDs.
Identity newid;
newid.generate();
responseBody = newid.toString(true);
responseContentType = "text/plain";
scode = 200;
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} else {
if (_controller)
scode = _controller->handleControlPlaneHttpGET(std::vector<std::string>(ps.begin()+1,ps.end()),urlArgs,headers,body,responseBody,responseContentType);
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else scode = 404;
}
} else scode = 401; // isAuth == false
} else if ((httpMethod == HTTP_POST)||(httpMethod == HTTP_PUT)) {
if (isAuth) {
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if (ps[0] == "settings") {
// TODO
} else if (ps[0] == "network") {
if (ps.size() == 2) {
uint64_t wantnw = Utils::hexStrToU64(ps[1].c_str());
_node->join(wantnw,(void *)0); // does nothing if we are a member
ZT_VirtualNetworkList *nws = _node->networks();
if (nws) {
for(unsigned long i=0;i<nws->networkCount;++i) {
if (nws->networks[i].nwid == wantnw) {
OneService::NetworkSettings localSettings;
_svc->getNetworkSettings(nws->networks[i].nwid,localSettings);
try {
nlohmann::json j(nlohmann::json::parse(body));
if (j.is_object()) {
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nlohmann::json &allowManaged = j["allowManaged"];
if (allowManaged.is_boolean()) localSettings.allowManaged = (bool)allowManaged;
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nlohmann::json &allowGlobal = j["allowGlobal"];
if (allowGlobal.is_boolean()) localSettings.allowGlobal = (bool)allowGlobal;
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nlohmann::json &allowDefault = j["allowDefault"];
if (allowDefault.is_boolean()) localSettings.allowDefault = (bool)allowDefault;
}
} catch ( ... ) {
// discard invalid JSON
}
_svc->setNetworkSettings(nws->networks[i].nwid,localSettings);
responseContentType = "application/json";
_jsonAppend(0,responseBody,&(nws->networks[i]),_svc->portDeviceName(nws->networks[i].nwid),localSettings);
responseBody.push_back('\n');
scode = 200;
break;
}
}
_node->freeQueryResult((void *)nws);
} else scode = 500;
}
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} else {
if (_controller)
scode = _controller->handleControlPlaneHttpPOST(std::vector<std::string>(ps.begin()+1,ps.end()),urlArgs,headers,body,responseBody,responseContentType);
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else scode = 404;
}
} else scode = 401; // isAuth == false
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} else if (httpMethod == HTTP_DELETE) {
if (isAuth) {
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if (ps[0] == "network") {
ZT_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,(void **)0);
responseBody = "true";
responseContentType = "application/json";
scode = 200;
break;
}
}
} // else 404
_node->freeQueryResult((void *)nws);
} else scode = 500;
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} else {
if (_controller)
scode = _controller->handleControlPlaneHttpDELETE(std::vector<std::string>(ps.begin()+1,ps.end()),urlArgs,headers,body,responseBody,responseContentType);
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else scode = 404;
}
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} else {
scode = 401; // isAuth = false
}
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} else {
scode = 400;
responseBody = "Method not supported.";
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}
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// Wrap result in jsonp function call if the user included a jsonp= url argument.
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// Also double-check isAuth since forbidding this without auth feels safer.
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std::map<std::string,std::string>::const_iterator jsonp(urlArgs.find("jsonp"));
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if ((isAuth)&&(jsonp != urlArgs.end())&&(responseContentType == "application/json")) {
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if (responseBody.length() > 0)
responseBody = jsonp->second + "(" + responseBody + ");";
else responseBody = jsonp->second + "(null);";
responseContentType = "application/javascript";
}
return scode;
}
} // namespace ZeroTier