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// Copyright (C) 2016-2021 Internet Systems Consortium, Inc. ("ISC")
//
// 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 <config.h>
#include <agent/ca_cfg_mgr.h>
#include <agent/ca_log.h>
#include <agent/simple_parser.h>
#include <cc/simple_parser.h>
#include <cc/command_interpreter.h>
#include <http/basic_auth_config.h>
#include <process/redact_config.h>
#include <exceptions/exceptions.h>
using namespace isc::config;
using namespace isc::dhcp;
using namespace isc::process;
using namespace isc::data;
namespace isc {
namespace agent {
CtrlAgentCfgContext::CtrlAgentCfgContext()
: http_host_(""), http_port_(0),
trust_anchor_(""), cert_file_(""), key_file_(""), cert_required_(true) {
}
CtrlAgentCfgContext::CtrlAgentCfgContext(const CtrlAgentCfgContext& orig)
: ConfigBase(), ctrl_sockets_(orig.ctrl_sockets_),
http_host_(orig.http_host_), http_port_(orig.http_port_),
trust_anchor_(orig.trust_anchor_), cert_file_(orig.cert_file_),
key_file_(orig.key_file_), cert_required_(orig.cert_required_),
hooks_config_(orig.hooks_config_), auth_config_(orig.auth_config_) {
}
CtrlAgentCfgMgr::CtrlAgentCfgMgr()
: DCfgMgrBase(ConfigPtr(new CtrlAgentCfgContext())) {
}
CtrlAgentCfgMgr::~CtrlAgentCfgMgr() {
}
std::string
CtrlAgentCfgMgr::getConfigSummary(const uint32_t /*selection*/) {
CtrlAgentCfgContextPtr ctx = getCtrlAgentCfgContext();
// First print the http stuff.
std::ostringstream s;
s << "listening on " << ctx->getHttpHost() << ", port "
<< ctx->getHttpPort();
// When TLS is setup print its config.
if (!ctx->getTrustAnchor().empty()) {
s << ", trust anchor " << ctx->getTrustAnchor()
<< ", cert file " << ctx->getCertFile()
<< ", key file " << ctx->getKeyFile();
if (ctx->getCertRequired()) {
s << ", client certs are required";
} else {
s << ", client certs are optional";
}
}
s << ", control sockets: ";
// Then print the control-sockets
s << ctx->getControlSocketInfoSummary();
// Add something if authentication is required.
const isc::http::HttpAuthConfigPtr& auth = ctx->getAuthConfig();
if (auth && !auth->empty()) {
s << ", requires basic HTTP authentication";
}
// Finally, print the hook libraries names
const isc::hooks::HookLibsCollection libs = ctx->getHooksConfig().get();
s << ", " << libs.size() << " lib(s):";
for (auto lib = libs.begin(); lib != libs.end(); ++lib) {
s << lib->first << " ";
}
return (s.str());
}
ConfigPtr
CtrlAgentCfgMgr::createNewContext() {
return (ConfigPtr(new CtrlAgentCfgContext()));
}
ConstElementPtr
CtrlAgentCfgMgr::parse(ConstElementPtr config_set, bool check_only) {
// Do a sanity check first.
if (!config_set) {
isc_throw(DhcpConfigError, "Mandatory config parameter not provided");
}
CtrlAgentCfgContextPtr ctx = getCtrlAgentCfgContext();
// Set the defaults
ElementPtr cfg = boost::const_pointer_cast<Element>(config_set);
AgentSimpleParser::setAllDefaults(cfg);
// And parse the configuration.
ConstElementPtr answer;
std::string excuse;
try {
// Do the actual parsing
AgentSimpleParser parser;
parser.checkTlsSetup(cfg);
parser.parse(ctx, cfg, check_only);
} catch (const isc::Exception& ex) {
excuse = ex.what();
answer = createAnswer(CONTROL_RESULT_ERROR, excuse);
} catch (...) {
excuse = "undefined configuration parsing error";
answer = createAnswer(CONTROL_RESULT_ERROR, excuse);
}
// At this stage the answer was created only in case of exception.
if (answer) {
if (check_only) {
LOG_ERROR(agent_logger, CTRL_AGENT_CONFIG_CHECK_FAIL).arg(excuse);
} else {
LOG_ERROR(agent_logger, CTRL_AGENT_CONFIG_FAIL).arg(excuse);
}
return (answer);
}
if (check_only) {
answer = createAnswer(CONTROL_RESULT_SUCCESS,
"Configuration check successful");
} else {
answer = createAnswer(CONTROL_RESULT_SUCCESS,
"Configuration applied successfully.");
}
return (answer);
}
ConstElementPtr
CtrlAgentCfgMgr::redactConfig(ConstElementPtr config) const {
bool redacted = false;
const std::set<std::string> follow = {
"Control-agent", "authentication", "clients"
};
ConstElementPtr result =
isc::process::redactConfig(config, redacted, follow);
if (redacted) {
return (result);
}
return (config);
}
data::ConstElementPtr
CtrlAgentCfgContext::getControlSocketInfo(const std::string& service) const {
auto si = ctrl_sockets_.find(service);
return ((si != ctrl_sockets_.end()) ? si->second : ConstElementPtr());
}
void
CtrlAgentCfgContext::setControlSocketInfo(const ConstElementPtr& control_socket,
const std::string& service) {
ctrl_sockets_[service] = control_socket;
}
std::string
CtrlAgentCfgContext::getControlSocketInfoSummary() const {
std::ostringstream s;
for (auto si = ctrl_sockets_.cbegin(); si != ctrl_sockets_.end(); ++si) {
if (s.tellp() != 0) {
s << " ";
}
s << si->first;
}
if (s.tellp() == 0) {
s << "none";
}
return (s.str());
}
ElementPtr
CtrlAgentCfgContext::toElement() const {
ElementPtr ca = ConfigBase::toElement();
// Set user-context
contextToElement(ca);
// Set http-host
ca->set("http-host", Element::create(http_host_));
// Set http-port
ca->set("http-port", Element::create(static_cast<int64_t>(http_port_)));
// Set TLS setup when enabled
if (!trust_anchor_.empty()) {
ca->set("trust-anchor", Element::create(trust_anchor_));
ca->set("cert-file", Element::create(cert_file_));
ca->set("key-file", Element::create(key_file_));
ca->set("cert-required", Element::create(cert_required_));
}
// Set authentication
if (auth_config_) {
ca->set("authentication", auth_config_->toElement());
}
ca->set("hooks-libraries", hooks_config_.toElement());
// Set control-sockets
ElementPtr control_sockets = Element::createMap();
for (auto si = ctrl_sockets_.cbegin(); si != ctrl_sockets_.cend(); ++si) {
ConstElementPtr socket = UserContext::toElement(si->second);
control_sockets->set(si->first, socket);
}
ca->set("control-sockets", control_sockets);
// Set Control-agent
ElementPtr result = Element::createMap();
result->set("Control-agent", ca);
return (result);
}
} // namespace isc::agent
} // namespace isc
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