| 1 | /* |
| 2 | * SPDX-License-Identifier: MIT |
| 3 | * |
| 4 | * Copyright 2024 EfficiOS, Inc. |
| 5 | */ |
| 6 | |
| 7 | #include "cpp-common/bt2/clock-class.hpp" |
| 8 | #include "cpp-common/bt2/message.hpp" |
| 9 | #include "cpp-common/bt2/wrap.hpp" |
| 10 | |
| 11 | #include "clock-correlation-validator.h" |
| 12 | #include "clock-correlation-validator.hpp" |
| 13 | |
| 14 | namespace bt2ccv { |
| 15 | |
| 16 | void ClockCorrelationValidator::_validate(const bt2::ConstMessage msg) |
| 17 | { |
| 18 | bt2::OptionalBorrowedObject<bt2::ConstClockClass> clockCls; |
| 19 | bt2::OptionalBorrowedObject<bt2::ConstStreamClass> streamCls; |
| 20 | |
| 21 | switch (msg.type()) { |
| 22 | case bt2::MessageType::StreamBeginning: |
| 23 | streamCls = msg.asStreamBeginning().stream().cls(); |
| 24 | clockCls = streamCls->defaultClockClass(); |
| 25 | break; |
| 26 | |
| 27 | case bt2::MessageType::MessageIteratorInactivity: |
| 28 | clockCls = msg.asMessageIteratorInactivity().clockSnapshot().clockClass(); |
| 29 | break; |
| 30 | |
| 31 | default: |
| 32 | bt_common_abort(); |
| 33 | } |
| 34 | |
| 35 | switch (_mExpectation) { |
| 36 | case PropsExpectation::Unset: |
| 37 | /* |
| 38 | * This is the first analysis of a message with a clock |
| 39 | * snapshot: record the properties of that clock, against which |
| 40 | * we'll compare the clock properties of the following messages. |
| 41 | */ |
| 42 | if (!clockCls) { |
| 43 | _mExpectation = PropsExpectation::None; |
| 44 | } else if (clockCls->originIsUnixEpoch()) { |
| 45 | _mExpectation = PropsExpectation::OriginUnix; |
| 46 | } else if (const auto uuid = clockCls->uuid()) { |
| 47 | _mExpectation = PropsExpectation::OriginOtherUuid; |
| 48 | _mUuid = *uuid; |
| 49 | } else { |
| 50 | _mExpectation = PropsExpectation::OriginOtherNoUuid; |
| 51 | _mClockClass = clockCls->shared(); |
| 52 | } |
| 53 | |
| 54 | break; |
| 55 | |
| 56 | case PropsExpectation::None: |
| 57 | if (clockCls) { |
| 58 | throw ClockCorrelationError {ClockCorrelationError::Type::ExpectingNoClockClassGotOne, |
| 59 | bt2s::nullopt, |
| 60 | *clockCls, |
| 61 | {}, |
| 62 | streamCls}; |
| 63 | } |
| 64 | |
| 65 | break; |
| 66 | |
| 67 | case PropsExpectation::OriginUnix: |
| 68 | if (!clockCls) { |
| 69 | throw ClockCorrelationError {ClockCorrelationError::Type::ExpectingOriginUnixGotNone, |
| 70 | bt2s::nullopt, |
| 71 | {}, |
| 72 | {}, |
| 73 | streamCls}; |
| 74 | } |
| 75 | |
| 76 | if (!clockCls->originIsUnixEpoch()) { |
| 77 | throw ClockCorrelationError {ClockCorrelationError::Type::ExpectingOriginUnixGotOther, |
| 78 | bt2s::nullopt, |
| 79 | *clockCls, |
| 80 | {}, |
| 81 | streamCls}; |
| 82 | } |
| 83 | |
| 84 | break; |
| 85 | |
| 86 | case PropsExpectation::OriginOtherUuid: |
| 87 | { |
| 88 | if (!clockCls) { |
| 89 | throw ClockCorrelationError {ClockCorrelationError::Type::ExpectingOriginUuidGotNone, |
| 90 | bt2s::nullopt, |
| 91 | {}, |
| 92 | {}, |
| 93 | streamCls}; |
| 94 | } |
| 95 | |
| 96 | if (clockCls->originIsUnixEpoch()) { |
| 97 | throw ClockCorrelationError {ClockCorrelationError::Type::ExpectingOriginUuidGotUnix, |
| 98 | bt2s::nullopt, |
| 99 | *clockCls, |
| 100 | {}, |
| 101 | streamCls}; |
| 102 | } |
| 103 | |
| 104 | const auto uuid = clockCls->uuid(); |
| 105 | |
| 106 | if (!uuid) { |
| 107 | throw ClockCorrelationError {ClockCorrelationError::Type::ExpectingOriginUuidGotNoUuid, |
| 108 | bt2s::nullopt, |
| 109 | *clockCls, |
| 110 | {}, |
| 111 | streamCls}; |
| 112 | } |
| 113 | |
| 114 | if (*uuid != _mUuid) { |
| 115 | throw ClockCorrelationError { |
| 116 | ClockCorrelationError::Type::ExpectingOriginUuidGotOtherUuid, |
| 117 | _mUuid, |
| 118 | *clockCls, |
| 119 | {}, |
| 120 | streamCls}; |
| 121 | } |
| 122 | |
| 123 | break; |
| 124 | } |
| 125 | |
| 126 | case PropsExpectation::OriginOtherNoUuid: |
| 127 | if (!clockCls) { |
| 128 | throw ClockCorrelationError {ClockCorrelationError::Type::ExpectingOriginNoUuidGotNone, |
| 129 | bt2s::nullopt, |
| 130 | {}, |
| 131 | {}, |
| 132 | streamCls}; |
| 133 | } |
| 134 | |
| 135 | if (clockCls->libObjPtr() != _mClockClass->libObjPtr()) { |
| 136 | throw ClockCorrelationError {ClockCorrelationError::Type::ExpectingOriginNoUuidGotOther, |
| 137 | bt2s::nullopt, *clockCls, *_mClockClass, streamCls}; |
| 138 | } |
| 139 | |
| 140 | break; |
| 141 | |
| 142 | default: |
| 143 | bt_common_abort(); |
| 144 | } |
| 145 | } |
| 146 | |
| 147 | } /* namespace bt2ccv */ |
| 148 | |
| 149 | bt_clock_correlation_validator *bt_clock_correlation_validator_create() noexcept |
| 150 | { |
| 151 | try { |
| 152 | return reinterpret_cast<bt_clock_correlation_validator *>( |
| 153 | new bt2ccv::ClockCorrelationValidator); |
| 154 | } catch (const std::bad_alloc&) { |
| 155 | return nullptr; |
| 156 | } |
| 157 | } |
| 158 | |
| 159 | bool bt_clock_correlation_validator_validate_message( |
| 160 | bt_clock_correlation_validator * const validator, const bt_message * const msg, |
| 161 | bt_clock_correlation_validator_error_type * const type, bt_uuid * const expectedUuidOut, |
| 162 | const bt_clock_class ** const actualClockClsOut, |
| 163 | const bt_clock_class ** const expectedClockClsOut) noexcept |
| 164 | { |
| 165 | try { |
| 166 | reinterpret_cast<bt2ccv::ClockCorrelationValidator *>(validator)->validate(bt2::wrap(msg)); |
| 167 | return true; |
| 168 | } catch (const bt2ccv::ClockCorrelationError& error) { |
| 169 | *type = static_cast<bt_clock_correlation_validator_error_type>(error.type()); |
| 170 | |
| 171 | if (error.expectedUuid()) { |
| 172 | *expectedUuidOut = error.expectedUuid()->data(); |
| 173 | } else { |
| 174 | *expectedUuidOut = nullptr; |
| 175 | } |
| 176 | |
| 177 | if (error.actualClockCls()) { |
| 178 | *actualClockClsOut = error.actualClockCls()->libObjPtr(); |
| 179 | } else { |
| 180 | *actualClockClsOut = nullptr; |
| 181 | } |
| 182 | |
| 183 | if (error.expectedClockCls()) { |
| 184 | *expectedClockClsOut = error.expectedClockCls()->libObjPtr(); |
| 185 | } else { |
| 186 | *expectedClockClsOut = nullptr; |
| 187 | } |
| 188 | |
| 189 | return false; |
| 190 | } |
| 191 | } |
| 192 | |
| 193 | void bt_clock_correlation_validator_destroy( |
| 194 | bt_clock_correlation_validator * const validator) noexcept |
| 195 | { |
| 196 | delete reinterpret_cast<bt2ccv::ClockCorrelationValidator *>(validator); |
| 197 | } |