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Add DeviceKeysEqual
(#2219)
* Add `DeviceKeysEqual` * Update check order * Fix check * Tweak conditions again * One more time * Single return value
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parent
34116178e8
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@ -15,6 +15,7 @@
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package api
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import (
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"bytes"
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"context"
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"encoding/json"
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"strings"
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@ -73,6 +74,26 @@ type DeviceMessage struct {
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DeviceChangeID int64
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}
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// DeviceKeysEqual returns true if the device keys updates contain the
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// same display name and key JSON. This will return false if either of
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// the updates is not a device keys update, or if the user ID/device ID
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// differ between the two.
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func (m1 *DeviceMessage) DeviceKeysEqual(m2 *DeviceMessage) bool {
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if m1.DeviceKeys == nil || m2.DeviceKeys == nil {
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return false
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}
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if m1.UserID != m2.UserID || m1.DeviceID != m2.DeviceID {
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return false
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}
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if m1.DisplayName != m2.DisplayName {
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return false // different display names
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}
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if len(m1.KeyJSON) == 0 || len(m2.KeyJSON) == 0 {
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return false // either is empty
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}
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return bytes.Equal(m1.KeyJSON, m2.KeyJSON)
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}
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// DeviceKeys represents a set of device keys for a single device
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// https://matrix.org/docs/spec/client_server/r0.6.1#post-matrix-client-r0-keys-upload
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type DeviceKeys struct {
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@ -718,7 +718,7 @@ func emitDeviceKeyChanges(producer KeyChangeProducer, existing, new []api.Device
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for _, existingKey := range existing {
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// Do not treat the absence of keys as equal, or else we will not emit key changes
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// when users delete devices which never had a key to begin with as both KeyJSONs are nil.
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if bytes.Equal(existingKey.KeyJSON, newKey.KeyJSON) && len(existingKey.KeyJSON) > 0 {
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if existingKey.DeviceKeysEqual(&newKey) {
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exists = true
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break
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}
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