085a2c23e7
Including code built from restricted sources in a distribution medium does not require sharing the code for building the distribution medium. Test: m cts dist Test: m cts dist gts (requires cherry-pick to internal) Change-Id: I7fcd889b11a97f8deaf4de9d72fdadd09deebe30
78 lines
2.8 KiB
Go
78 lines
2.8 KiB
Go
// Copyright 2021 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package compliance
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import (
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"fmt"
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)
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// SourceSharePrivacyConflict describes an individual conflict between a source-sharing
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// condition and a source privacy condition
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type SourceSharePrivacyConflict struct {
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SourceNode *TargetNode
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ShareCondition LicenseCondition
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PrivacyCondition LicenseCondition
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}
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// Error returns a string describing the conflict.
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func (conflict SourceSharePrivacyConflict) Error() string {
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return fmt.Sprintf("%s %s and must share from %s condition\n", conflict.SourceNode.name,
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conflict.PrivacyCondition.Name(), conflict.ShareCondition.Name())
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}
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// IsEqualTo returns true when `conflict` and `other` describe the same conflict.
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func (conflict SourceSharePrivacyConflict) IsEqualTo(other SourceSharePrivacyConflict) bool {
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return conflict.SourceNode.name == other.SourceNode.name &&
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conflict.ShareCondition == other.ShareCondition &&
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conflict.PrivacyCondition == other.PrivacyCondition
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}
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// ConflictingSharedPrivateSource lists all of the targets where conflicting conditions to
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// share the source and to keep the source private apply to the target.
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func ConflictingSharedPrivateSource(lg *LicenseGraph) []SourceSharePrivacyConflict {
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ResolveTopDownConditions(lg)
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// combined is the combination of source-sharing and source privacy.
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combined := WalkActionsForCondition(lg, ImpliesShared.Union(ImpliesPrivate))
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// size is the size of the result
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size := 0
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for actsOn, cs := range combined {
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if actsOn.pure && !actsOn.LicenseConditions().MatchesAnySet(ImpliesShared) {
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// no need to share code to build "a distribution medium"
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continue
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}
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size += cs.Intersection(ImpliesShared).Len() * cs.Intersection(ImpliesPrivate).Len()
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}
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if size == 0 {
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return nil
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}
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result := make([]SourceSharePrivacyConflict, 0, size)
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for actsOn, cs := range combined {
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if actsOn.pure { // no need to share code for "a distribution medium"
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continue
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}
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pconditions := cs.Intersection(ImpliesPrivate).AsList()
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ssconditions := cs.Intersection(ImpliesShared).AsList()
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// report all conflicting condition combinations
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for _, p := range pconditions {
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for _, ss := range ssconditions {
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result = append(result, SourceSharePrivacyConflict{actsOn, ss, p})
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}
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}
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}
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return result
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}
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