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77 lines
2.4 KiB
Go
77 lines
2.4 KiB
Go
package acimpl
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import (
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"context"
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"errors"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/grafana/grafana/pkg/infra/log"
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"github.com/grafana/grafana/pkg/infra/metrics"
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"github.com/grafana/grafana/pkg/services/accesscontrol"
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"github.com/grafana/grafana/pkg/services/auth/identity"
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"github.com/grafana/grafana/pkg/setting"
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)
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var _ accesscontrol.AccessControl = new(AccessControl)
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func ProvideAccessControl(cfg *setting.Cfg) *AccessControl {
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logger := log.New("accesscontrol")
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return &AccessControl{
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cfg, logger, accesscontrol.NewResolvers(logger),
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}
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}
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type AccessControl struct {
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cfg *setting.Cfg
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log log.Logger
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resolvers accesscontrol.Resolvers
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}
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func (a *AccessControl) Evaluate(ctx context.Context, user identity.Requester, evaluator accesscontrol.Evaluator) (bool, error) {
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timer := prometheus.NewTimer(metrics.MAccessEvaluationsSummary)
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defer timer.ObserveDuration()
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metrics.MAccessEvaluationCount.Inc()
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if user == nil || user.IsNil() {
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a.log.Warn("No entity set for access control evaluation")
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return false, nil
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}
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// If the user is in no organization, then the evaluation must happen based on the user's global permissions
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permissions := user.GetPermissions()
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if user.GetOrgID() == accesscontrol.NoOrgID {
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permissions = user.GetGlobalPermissions()
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}
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if len(permissions) == 0 {
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a.debug(ctx, user, "No permissions set", evaluator)
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return false, nil
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}
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a.debug(ctx, user, "Evaluating permissions", evaluator)
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// Test evaluation without scope resolver first, this will prevent 403 for wildcard scopes when resource does not exist
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if evaluator.Evaluate(permissions) {
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return true, nil
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}
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resolvedEvaluator, err := evaluator.MutateScopes(ctx, a.resolvers.GetScopeAttributeMutator(user.GetOrgID()))
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if err != nil {
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if errors.Is(err, accesscontrol.ErrResolverNotFound) {
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return false, nil
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}
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return false, err
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}
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a.debug(ctx, user, "Evaluating resolved permissions", resolvedEvaluator)
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return resolvedEvaluator.Evaluate(permissions), nil
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}
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func (a *AccessControl) RegisterScopeAttributeResolver(prefix string, resolver accesscontrol.ScopeAttributeResolver) {
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a.resolvers.AddScopeAttributeResolver(prefix, resolver)
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}
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func (a *AccessControl) debug(ctx context.Context, ident identity.Requester, msg string, eval accesscontrol.Evaluator) {
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namespace, id := ident.GetNamespacedID()
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a.log.FromContext(ctx).Debug(msg, "namespace", namespace, "id", id, "orgID", ident.GetOrgID(), "permissions", eval.GoString())
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}
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