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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
/*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#include "HostUtil.hpp"
#include <common/ConfigUtil.hpp>
#include <common/Log.hpp>
Util::RegexListMatcher HostUtil::WopiHosts;
std::map<std::string, std::string> HostUtil::AliasHosts;
std::set<std::string> HostUtil::AllHosts;
std::string HostUtil::FirstHost;
bool HostUtil::WopiEnabled;
void HostUtil::parseWopiHost(Poco::Util::LayeredConfiguration& conf)
{
// Parse the WOPI settings.
WopiHosts.clear();
WopiEnabled = conf.getBool("storage.wopi[@allow]", false);
if (WopiEnabled)
{
for (size_t i = 0;; ++i)
{
const std::string path = "storage.wopi.host[" + std::to_string(i) + ']';
if (!conf.has(path))
{
break;
}
HostUtil::addWopiHost(conf.getString(path, ""),
conf.getBool(path + "[@allow]", false));
}
}
}
void HostUtil::addWopiHost(std::string host, bool allow)
{
if (!host.empty())
{
if (allow)
{
LOG_INF("Adding trusted WOPI host: [" << host << "].");
WopiHosts.allow(host);
}
else
{
LOG_INF("Adding blocked WOPI host: [" << host << "].");
WopiHosts.deny(host);
}
}
}
bool HostUtil::allowedWopiHost(const std::string& host)
{
return WopiEnabled && WopiHosts.match(host);
}
bool HostUtil::allowedAlias(const Poco::URI& uri)
{
if (Util::iequal(config::getString("storage.wopi.alias_groups[@mode]", "first"), "compat"))
{
return true;
}
if (AllHosts.empty())
{
if (FirstHost != uri.getAuthority())
{
LOG_ERR("Only allowed host is: "
<< FirstHost
<< ", To use multiple host/aliases check alias_groups tag in configuration");
return false;
}
}
else if (!Util::matchRegex(AllHosts, uri.getAuthority()))
{
LOG_ERR("Host: " << uri.getAuthority()
<< " is denied, It is not defined in alias_groups configuration");
return false;
}
return true;
}
void HostUtil::parseAliases(Poco::Util::LayeredConfiguration& conf)
{
//set alias_groups mode to compat
if (!conf.has("storage.wopi.alias_groups"))
{
conf.setString("storage.wopi.alias_groups[@mode]", "compat");
}
else if (conf.has("storage.wopi.alias_groups.group[0]"))
{
// group defined in alias_groups
if (Util::iequal(config::getString("storage.wopi.alias_groups[@mode]", "first"), "first"))
{
LOG_ERR("Admins didnot set the alias_groups mode to 'groups'");
AliasHosts.clear();
AllHosts.clear();
return;
}
}
AliasHosts.clear();
AllHosts.clear();
for (size_t i = 0;; i++)
{
const std::string path = "storage.wopi.alias_groups.group[" + std::to_string(i) + ']';
if (!conf.has(path + ".host"))
{
break;
}
const std::string uri = conf.getString(path + ".host", "");
if (uri.empty())
{
continue;
}
bool allow = conf.getBool(path + ".host[@allow]", false);
try
{
const Poco::URI realUri(uri);
HostUtil::addWopiHost(realUri.getHost(), allow);
AllHosts.insert(realUri.getAuthority());
}
catch (const Poco::Exception& exc)
{
LOG_WRN("parseAliases: " << exc.displayText());
}
for (size_t j = 0;; j++)
{
const std::string aliasPath = path + ".alias[" + std::to_string(j) + ']';
if (!conf.has(aliasPath))
{
break;
}
try
{
const Poco::URI aliasUri(conf.getString(aliasPath, ""));
if (aliasUri.empty())
{
continue;
}
const std::string host = aliasUri.getHost();
std::vector<std::string> strVec = Util::splitStringToVector(host, '|');
const Poco::URI realUri(uri);
for (auto& x : strVec)
{
const Poco::URI aUri(aliasUri.getScheme() + "://" + x + ':' +
std::to_string(aliasUri.getPort()));
AliasHosts.insert({ aUri.getAuthority(), realUri.getAuthority() });
AllHosts.insert(aUri.getAuthority());
HostUtil::addWopiHost(aUri.getHost(), allow);
}
}
catch (const Poco::Exception& exc)
{
LOG_WRN("parseAliases: " << exc.displayText());
}
}
}
}
std::string HostUtil::getNewUri(const Poco::URI& uri)
{
if (Util::iequal(config::getString("storage.wopi.alias_groups[@mode]", "first"), "compat"))
{
return uri.getPath();
}
Poco::URI newUri(uri);
const std::string value = Util::getValue(AliasHosts, newUri.getAuthority());
if (!value.empty())
{
newUri.setAuthority(value);
}
if (newUri.getAuthority().empty())
{
return newUri.getPath();
}
return newUri.getScheme() + "://" + newUri.getHost() + ':' + std::to_string(newUri.getPort()) +
newUri.getPath();
}
const Poco::URI HostUtil::getNewLockedUri(Poco::URI& uri)
{
Poco::URI newUri(uri);
const std::string value = Util::getValue(AliasHosts, newUri.getAuthority());
if (!value.empty())
{
newUri.setAuthority(value);
LOG_WRN("The locked_host: " << uri.getAuthority() << " is alias of "
<< newUri.getAuthority() << ",Applying "
<< newUri.getAuthority() << " locked_host settings.");
}
return newUri;
}
void HostUtil::setFirstHost(const Poco::URI& uri)
{
if (AllHosts.empty() && FirstHost.empty())
{
FirstHost = uri.getAuthority();
addWopiHost(uri.getHost(), true);
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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