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243 | // Copyright (C) 2015-2024 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 <cc/dhcp_config_error.h>
#include <config/http_command_config.h>
#include <http/basic_auth_config.h>
#include <limits><--- Include file: not found. Please note: Cppcheck does not need standard library headers to get proper results.
using namespace isc;
using namespace isc::asiolink;
using namespace isc::config;
using namespace isc::data;
using namespace isc::dhcp;
using namespace isc::http;
using namespace std;
namespace isc {
namespace config {
IOAddress HttpCommandConfig::DEFAULT_SOCKET_ADDRESS = IOAddress("127.0.0.1");
uint16_t HttpCommandConfig::DEFAULT_SOCKET_PORT = 8000;
string HttpCommandConfig::DEFAULT_AUTHENTICATION_REALM = "";
HttpCommandConfig::HttpCommandConfig(ConstElementPtr config)
: socket_type_("http"), socket_address_(DEFAULT_SOCKET_ADDRESS),
socket_port_(DEFAULT_SOCKET_PORT), http_headers_(), auth_config_(),
trust_anchor_(""), cert_file_(""), key_file_(""), cert_required_(true),
emulate_agent_response_(true) {
if (config->getType() != Element::map) {
isc_throw(DhcpConfigError, "expected map type ("
<< config->getPosition() << ")");
}
// Get socket type.
ConstElementPtr socket_type = config->get("socket-type");
if (socket_type) {
if (socket_type->getType() != Element::string) {
isc_throw(DhcpConfigError,
"invalid type specified for parameter 'socket-type' ("
<< socket_type->getPosition() << ")");
}
socket_type_ = socket_type->stringValue();
if ((socket_type_ != "http") && (socket_type_ != "https")) {
isc_throw(DhcpConfigError, "unsupported 'socket-type' '"
<< socket_type_ << "' not 'http' or 'https'");
}
}
// Reject UNIX only socket-name.
if (config->contains("socket-name")) {
isc_throw(DhcpConfigError,
"parameter 'socket-name' is not supported by HTTP "
"control sockets");
}
// Get socket address.
ConstElementPtr socket_address = config->get("socket-address");
if (socket_address) {
if (socket_address->getType() != Element::string) {
isc_throw(DhcpConfigError,
"invalid type specified for parameter 'socket-address' ("
<< socket_address->getPosition() << ")");
}
try {
socket_address_ = IOAddress(socket_address->stringValue());
} catch (const std::exception& ex) {
isc_throw(DhcpConfigError, "failed to convert '"
<< socket_address->stringValue()
<< "' to address: " << ex.what()
<< " (" << socket_address->getPosition() << ")");
}
}
// Get socket port.
ConstElementPtr socket_port = config->get("socket-port");
if (socket_port) {
if (socket_port->getType() != Element::integer) {
isc_throw(DhcpConfigError,
"invalid type specified for parameter 'socket-port' ("
<< socket_port->getPosition() << ")");
}
int64_t value = socket_port->intValue();
if ((value < numeric_limits<uint16_t>::min()) ||
(value > numeric_limits<uint16_t>::max())) {
isc_throw(DhcpConfigError,
"out of range value " << value
<< " specified for parameter 'socket-port' ("
<< socket_port->getPosition() << ")");
}
socket_port_ = static_cast<uint16_t>(value);
}
// Get HTTP headers.
ConstElementPtr headers = config->get("http-headers");
if (headers) {
http_headers_ = parseCfgHttpHeaders(headers);
}
// Get HTTP authentication.
ConstElementPtr auth_config = config->get("authentication");
if (auth_config) {
ElementPtr mutable_auth_config =
boost::const_pointer_cast<Element>(auth_config);
if (auth_config->getType() != Element::map) {
isc_throw(DhcpConfigError,
"invalid type specified for parameter 'authentication' ("
<< auth_config->getPosition() << ")");
}
// Default type is basic.
ConstElementPtr type = auth_config->get("type");
if (!type) {
mutable_auth_config->set("type", Element::create(string("basic")));
}
// Set default realm when not present.
ConstElementPtr realm = auth_config->get("realm");
if (!realm) {
mutable_auth_config->set("realm",
Element::create(DEFAULT_AUTHENTICATION_REALM));
}
BasicHttpAuthConfigPtr auth(new BasicHttpAuthConfig());
auth->parse(auth_config);
auth_config_ = auth;
}
// Get trust anchor.
ConstElementPtr trust_anchor = config->get("trust-anchor");
if (trust_anchor) {
if (trust_anchor->getType() != Element::string) {
isc_throw(DhcpConfigError,
"invalid type specified for parameter 'trust-anchor' ("
<< trust_anchor->getPosition() << ")");
}
trust_anchor_ = trust_anchor->stringValue();
}
// Get cert file.
ConstElementPtr cert_file = config->get("cert-file");
if (cert_file) {
if (cert_file->getType() != Element::string) {
isc_throw(DhcpConfigError,
"invalid type specified for parameter 'cert-file' ("
<< cert_file->getPosition() << ")");
}
cert_file_ = cert_file->stringValue();
}
// Get key file.
ConstElementPtr key_file = config->get("key-file");
if (key_file) {
if (key_file->getType() != Element::string) {
isc_throw(DhcpConfigError,
"invalid type specified for parameter 'key-file' ("
<< key_file->getPosition() << ")");
}
key_file_ = key_file->stringValue();
}
// Get cert required.
ConstElementPtr cert_required = config->get("cert-required");
if (cert_required) {
if (cert_required->getType() != Element::boolean) {
isc_throw(DhcpConfigError,
"invalid type specified for parameter 'cert-required' ("
<< cert_required->getPosition() << ")");
}
cert_required_ = cert_required->boolValue();
}
// Check the TLS setup.
checkTlsSetup(socket_type_ == "https");
// Get user context.
ConstElementPtr user_context = config->get("user-context");
if (user_context) {
setContext(user_context);
}
}
void
HttpCommandConfig::checkTlsSetup(bool require_tls) const {
bool have_ca = !trust_anchor_.empty();
bool have_cert = !cert_file_.empty();
bool have_key = !key_file_.empty();
if (!have_ca && !have_cert && !have_key) {
if (require_tls) {
isc_throw(DhcpConfigError,
"no TLS setup for a HTTPS control socket");
}
return;
}
// TLS is used: all 3 parameters are required.
if (!have_ca) {
isc_throw(DhcpConfigError,
"trust-anchor parameter is missing or empty:"
" all or none of TLS parameters must be set");
}
if (!have_cert) {
isc_throw(DhcpConfigError, "cert-file parameter is missing or empty:"
" all or none of TLS parameters must be set");
}
if (!have_key) {
isc_throw(DhcpConfigError, "key-file parameter is missing or empty:"
" all or none of TLS parameters must be set");
}
}
ElementPtr
HttpCommandConfig::toElement() const {
ElementPtr result = Element::createMap();
// Set user-context.
contextToElement(result);
// Set socket type.
result->set("socket-type", Element::create(socket_type_));
// Set socket address.
result->set("socket-address", Element::create(socket_address_.toText()));
// Set http-headers.
if (!http_headers_.empty()) {
result->set("http-headers", CfgHttpHeaderstoElement(http_headers_));
}
// Set socket port.
result->set("socket-port",
Element::create(static_cast<uint32_t>(socket_port_)));
/// Set authentication.
if (auth_config_) {
result->set("authentication", auth_config_->toElement());
}
// Set TLS setup when enabled.
if (!trust_anchor_.empty()) {
result->set("trust-anchor", Element::create(trust_anchor_));
result->set("cert-file", Element::create(cert_file_));
result->set("key-file", Element::create(key_file_));
result->set("cert-required", Element::create(cert_required_));
}
return (result);
}
} // end of isc::config
} // end of isc
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