99 lines
2.3 KiB
Go
99 lines
2.3 KiB
Go
// Copyright © 2016 Abcum Ltd
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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 db
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import (
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"context"
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"github.com/abcum/surreal/cnf"
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"github.com/abcum/surreal/sql"
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"github.com/abcum/surreal/util/data"
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)
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func (d *document) perms(ctx context.Context, doc *data.Doc) (err error) {
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// If this is a document loaded from
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// a subquery or data param, and not
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// from the KV store, then there is
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// no need to check permissions.
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if d.key == nil {
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return nil
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}
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// Get the field definitions so we can
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// check if the permissions allow us
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// to view each field.
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fds, err := d.i.e.dbo.AllFD(ctx, d.key.NS, d.key.DB, d.key.TB)
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if err != nil {
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return err
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}
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// Once we have the table we reset the
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// context to DB level so that no other
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// embedded permissions are checked on
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// records within these permissions.
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ctx = context.WithValue(ctx, ctxKeyKind, cnf.AuthDB)
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// We then try to process the relevant
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// permissions dependent on the query
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// that we are currently processing. If
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// there are no permissions specified
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// for this table, then because this is
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// a scoped request, return an error.
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for _, fd := range fds {
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if fd.Perms != nil {
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err = doc.Walk(func(key string, val interface{}, exi bool) error {
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// We are checking the permissions of the field
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if p, ok := fd.Perms.(*sql.PermExpression); ok {
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// Get the old value
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old := d.initial.Get(key).Data()
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// Reset the variables
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vars := data.New()
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vars.Set(val, varKeyValue)
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vars.Set(val, varKeyAfter)
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vars.Set(old, varKeyBefore)
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ctx = context.WithValue(ctx, ctxKeySpec, vars)
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if v, err := d.i.e.fetch(ctx, p.Select, doc); err != nil {
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return err
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} else if b, ok := v.(bool); !ok || !b {
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doc.Del(key)
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}
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}
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return nil
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}, fd.Name.VA)
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}
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}
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return nil
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}
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