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/*
* This file is part of PowerDNS or weakforced.
* Copyright -- PowerDNS.COM B.V. and its contributors
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 3 of the GNU General Public License as
* published by the Free Software Foundation.
*
* In addition, for the avoidance of any doubt, permission is granted to
* link this program with OpenSSL and to (re)distribute the binaries
* produced as the result of such linking.
*
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include "iputils.hh"
#include "sstuff.hh"
#include "wforce_ns.hh"
#include "dolog.hh"
#include "webhook.hh"
#include "wforce-webserver.hh"
#include "wforce-common-lua.hh"
#include <boost/filesystem.hpp>
using std::thread;
extern WforceWebserver g_webserver;
extern ComboAddress g_serverControl;
extern WebHookRunner g_webhook_runner;
extern curlTLSOptions g_curl_tls_options;
void controlThread(int fd, ComboAddress local);
// These are Lua functions common to both wforce and trackalert (and crucially which have no differences in their
// implementation)
void setupWforceCommonLua(bool client, bool multi_lua, LuaContext& c_lua, std::vector<std::function<void(void)>>* launchwork)
{
c_lua.writeFunction("shutdown", []() { _exit(0);} );
if (!multi_lua) {
c_lua.writeFunction("addListener", [client, launchwork](const std::string& address, bool useSSL, const std::string cert_file,
const std::string& key_file, std::vector<std::pair<std::string, std::string>> opts) {
if (client)
return;
ComboAddress local;
try {
local = ComboAddress(address);
}
catch (const WforceException& e) {
errlog("addListener() error parsing address/port [%s]. Make sure to use IP addresses not hostnames", address);
return;
}
if (useSSL) {
// Check that the certificate and private key exist and are readable
auto check_file = [](const std::string& filetype, const std::string& filename) -> bool {
boost::filesystem::path p(filename);
if (boost::filesystem::exists(p)) {
if (!boost::filesystem::is_regular_file(p)) {
errlog("addListener() %s file [%s] is not a regular file", filetype, filename);
return false;
}
}
else {
errlog("addListener() %s file [%s] does not exist or cannot be read", filetype, filename);
return false;
}
return true;
};
if (!(check_file("certificate", cert_file) && check_file("key", key_file))) {
return;
}
}
g_webserver.addListener(local.toString(), local.getPort(), useSSL, cert_file, key_file, false, opts);
auto launch =[]() {
thread t(WforceWebserver::start, &g_webserver);
t.detach();
};
if (launchwork)
launchwork->push_back(launch);
else
launch();
});
}
else {
c_lua.writeFunction("addListener", [](const std::string& address, bool useSSL, const std::string cert_file,
const std::string& private_key, std::vector<std::pair<std::string, std::string>> opts) { });
}
if (!multi_lua) {
c_lua.writeFunction("controlSocket", [client, launchwork](const std::string& str) {
ComboAddress local;
try {
local = ComboAddress(str, 4004);
}
catch (const WforceException& e) {
errlog("controlSocket() error parsing address/port [%s]. Make sure to use IP addresses not hostnames", str);
return;
}
if(client) {
g_serverControl = local;
return;
}
try {
int sock = socket(local.sin4.sin_family, SOCK_STREAM, 0);
if (sock < 0)
throw std::runtime_error("Failed to create control socket");
SSetsockopt(sock, SOL_SOCKET, SO_REUSEADDR, 1);
SBind(sock, local);
SListen(sock, 5);
auto launch=[sock, local]() {
thread t(controlThread, sock, local);
t.detach();
};
if(launchwork)
launchwork->push_back(launch);
else
launch();
}
catch(std::exception& e) {
errlog("Unable to bind to control socket on %s: %s", local.toStringWithPort(), e.what());
_exit(EXIT_FAILURE);
}
});
}
else {
c_lua.writeFunction("controlSocket", [](const std::string& str) { });
}
if (!multi_lua) {
c_lua.writeFunction("disableCurlPeerVerification", []() {
g_curl_tls_options.verifyPeer = false;
g_webhook_runner.disablePeerVerification();
});
}
else {
c_lua.writeFunction("disableCurlPeerVerification", []() { });
}
if (!multi_lua) {
c_lua.writeFunction("disableCurlHostVerification", []() {
g_curl_tls_options.verifyHost = false;
g_webhook_runner.disableHostVerification();
});
}
else {
c_lua.writeFunction("disableCurlHostVerification", []() { });
}
if (!multi_lua) {
c_lua.writeFunction("setCurlCABundleFile", [](const std::string& filename) {
g_curl_tls_options.caCertBundleFile = filename;
g_webhook_runner.setCACertBundleFile(filename);
});
}
else {
c_lua.writeFunction("setCurlCABundleFile", [](const std::string& filename) { });
}
if (!multi_lua) {
c_lua.writeFunction("setCurlClientCertAndKey", [](const std::string& certfile, const std::string& keyfile) {
g_curl_tls_options.clientCertFile = certfile;
g_curl_tls_options.clientKeyFile = keyfile;
g_webhook_runner.setClientCertAndKey(certfile, keyfile);
});
}
else {
c_lua.writeFunction("setCurlClientCertAndKey", [](const std::string& certfile, const std::string& keyfile) { });
}
}
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