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| 1 | +// Copyright 2017-2023 Bloomberg Finance L.P. |
| 2 | +// SPDX-License-Identifier: Apache-2.0 |
| 3 | +// |
| 4 | +// Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | +// you may not use this file except in compliance with the License. |
| 6 | +// You may obtain a copy of the License at |
| 7 | +// |
| 8 | +// http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | +// |
| 10 | +// Unless required by applicable law or agreed to in writing, software |
| 11 | +// distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | +// See the License for the specific language governing permissions and |
| 14 | +// limitations under the License. |
| 15 | + |
| 16 | +// mqbauthn_authenticationcontroller.cpp -*-C++-*- |
| 17 | +#include <mqbauthn_authenticationcontroller.h> |
| 18 | + |
| 19 | +#include <mqbscm_version.h> |
| 20 | +// BMQ |
| 21 | +#include <bmqtsk_alarmlog.h> |
| 22 | +#include <bmqu_memoutstream.h> |
| 23 | + |
| 24 | +// MQB |
| 25 | +#include <mqbcfg_brokerconfig.h> |
| 26 | +#include <mqbcfg_messages.h> |
| 27 | +#include <mqbplug_authenticator.h> |
| 28 | +#include <mqbplug_pluginfactory.h> |
| 29 | + |
| 30 | +// BDE |
| 31 | +#include <bsl_string.h> |
| 32 | +#include <bsl_unordered_set.h> |
| 33 | + |
| 34 | +namespace BloombergLP { |
| 35 | +namespace mqbauthn { |
| 36 | + |
| 37 | +namespace { |
| 38 | + |
| 39 | +typedef bsl::unordered_set<mqbplug::PluginFactory*> PluginFactories; |
| 40 | + |
| 41 | +} // close unnamed namespace |
| 42 | + |
| 43 | +// ------------------------------ |
| 44 | +// class AuthenticationController |
| 45 | +// ------------------------------ |
| 46 | + |
| 47 | +AuthenticationController::AuthenticationController( |
| 48 | + mqbplug::PluginManager* pluginManager, |
| 49 | + bslma::Allocator* allocator) |
| 50 | +: d_pluginManager_p(pluginManager) |
| 51 | +, d_allocator_p(allocator) |
| 52 | +{ |
| 53 | +} |
| 54 | + |
| 55 | +int AuthenticationController::start(bsl::ostream& errorDescription) |
| 56 | +{ |
| 57 | + enum RcEnum { |
| 58 | + // Enum for the various RC error categories |
| 59 | + rc_SUCCESS = 0, |
| 60 | + rc_DUPLICATE_MECHANISM = -1 |
| 61 | + }; |
| 62 | + |
| 63 | + int rc = rc_SUCCESS; |
| 64 | + bmqu::MemOutStream errorStream(d_allocator_p); |
| 65 | + |
| 66 | + // Assign fallback principal |
| 67 | + bdlb::NullableValue<bsl::string> fallbackPrincipal = |
| 68 | + mqbcfg::BrokerConfig::get().authentication().fallbackPrincipal(); |
| 69 | + if (!fallbackPrincipal.isNull()) { |
| 70 | + d_principal = fallbackPrincipal.value(); |
| 71 | + } |
| 72 | + |
| 73 | + // Initialize Authenticators from plugins |
| 74 | + { |
| 75 | + PluginFactories pluginFactories(d_allocator_p); |
| 76 | + d_pluginManager_p->get(mqbplug::PluginType::e_AUTHENTICATOR, |
| 77 | + &pluginFactories); |
| 78 | + |
| 79 | + for (PluginFactories::const_iterator factoryIt = |
| 80 | + pluginFactories.cbegin(); |
| 81 | + factoryIt != pluginFactories.cend(); |
| 82 | + ++factoryIt) { |
| 83 | + mqbplug::AuthenticatorPluginFactory* factory = |
| 84 | + dynamic_cast<mqbplug::AuthenticatorPluginFactory*>(*factoryIt); |
| 85 | + AuthenticatorMp authenticator = factory->create(d_allocator_p); |
| 86 | + |
| 87 | + // Check if there's an authenticator with duplicate mechanism |
| 88 | + AuthenticatorMap::const_iterator cit = d_authenticators.find( |
| 89 | + authenticator->mechanism()); |
| 90 | + if (cit != d_authenticators.cend()) { |
| 91 | + errorDescription << "Attempting to create duplicate " |
| 92 | + "authenticator with mechanism '" |
| 93 | + << authenticator->mechanism(); |
| 94 | + return rc_DUPLICATE_MECHANISM; |
| 95 | + } |
| 96 | + |
| 97 | + // Start the authenticator |
| 98 | + if (int status = authenticator->start(errorStream)) { |
| 99 | + BMQTSK_ALARMLOG_ALARM("#AUTHENTICATION") |
| 100 | + << "Failed to start Authenticator '" |
| 101 | + << authenticator->name() << "' [rc: " << status |
| 102 | + << ", error: '" << errorStream.str() << "']" |
| 103 | + << BMQTSK_ALARMLOG_END; |
| 104 | + errorStream.reset(); |
| 105 | + continue; // CONTINUE |
| 106 | + } |
| 107 | + |
| 108 | + // Add the authenticator into the collection |
| 109 | + d_authenticators.emplace( |
| 110 | + authenticator->mechanism(), |
| 111 | + bslmf::MovableRefUtil::move(authenticator)); |
| 112 | + } |
| 113 | + } |
| 114 | + |
| 115 | + return rc; |
| 116 | +} |
| 117 | + |
| 118 | +void AuthenticationController::stop() |
| 119 | +{ |
| 120 | +} |
| 121 | + |
| 122 | +int AuthenticationController::authenticate( |
| 123 | + bsl::ostream& errorDescription, |
| 124 | + bsl::shared_ptr<mqbplug::AuthenticationResult>* result, |
| 125 | + bslstl::StringRef mechanism, |
| 126 | + const mqbplug::AuthenticationData& input) |
| 127 | +{ |
| 128 | + enum RcEnum { |
| 129 | + // Enum for the various RC error categories |
| 130 | + rc_SUCCESS = 0, |
| 131 | + rc_AUTHENTICATION_FAILED = -1, |
| 132 | + rc_MECHANISM_NOT_SUPPORTED = -2 |
| 133 | + }; |
| 134 | + |
| 135 | + int rc = rc_SUCCESS; |
| 136 | + bmqu::MemOutStream errorStream(d_allocator_p); |
| 137 | + |
| 138 | + AuthenticatorMap::const_iterator cit = d_authenticators.find(mechanism); |
| 139 | + if (cit != d_authenticators.cend()) { |
| 140 | + const AuthenticatorMp& authenticator = cit->second; |
| 141 | + rc = authenticator->authenticate(errorStream, result, input); |
| 142 | + if (rc != rc_SUCCESS) { |
| 143 | + errorDescription << "AuthenticationController: failed to " |
| 144 | + "authenticate with mechanism '" |
| 145 | + << mechanism << "'. (rc = " << rc |
| 146 | + << "). Detailed error: " << errorStream.str(); |
| 147 | + return (rc * 10 + rc_AUTHENTICATION_FAILED); |
| 148 | + } |
| 149 | + } |
| 150 | + else { |
| 151 | + errorDescription |
| 152 | + << "AuthenticationController: authentication mechanism '" |
| 153 | + << mechanism << "' not supported."; |
| 154 | + return (rc * 10 + rc_MECHANISM_NOT_SUPPORTED); |
| 155 | + } |
| 156 | + |
| 157 | + return rc_SUCCESS; |
| 158 | +} |
| 159 | + |
| 160 | +} // close package namespace |
| 161 | +} // close enterprise namespace |
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