From e18d36ebae30536c77c61cd5da123991e0ca1629 Mon Sep 17 00:00:00 2001
From: Rasmus Dahlberg <rasmus@rgdd.se>
Date: Sun, 31 Dec 2023 09:39:25 +0100
Subject: Add drafty prototype

---
 pkg/storage/loglist/metadata.go | 62 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 62 insertions(+)
 create mode 100644 pkg/storage/loglist/metadata.go

(limited to 'pkg/storage/loglist/metadata.go')

diff --git a/pkg/storage/loglist/metadata.go b/pkg/storage/loglist/metadata.go
new file mode 100644
index 0000000..adacf81
--- /dev/null
+++ b/pkg/storage/loglist/metadata.go
@@ -0,0 +1,62 @@
+package loglist
+
+import "gitlab.torproject.org/rgdd/ct/pkg/metadata"
+
+// FIXME: helpers that should probably be in the upstream package
+
+func metadataFindLog(md metadata.Metadata, target metadata.Log) bool {
+	for _, operator := range md.Operators {
+		if findLog(operator.Logs, target) {
+			return true
+		}
+	}
+	return false
+}
+
+func findLog(logs []metadata.Log, target metadata.Log) bool {
+	targetID, _ := target.Key.ID()
+	for _, log := range logs {
+		id, _ := log.Key.ID()
+		if id == targetID {
+			return true
+		}
+	}
+	return false
+}
+
+func findKey(keys []metadata.LogKey, target metadata.Log) bool {
+	targetID, _ := target.Key.ID()
+	for _, key := range keys {
+		id, _ := key.ID()
+		if id == targetID {
+			return true
+		}
+	}
+	return false
+}
+
+func metadataLogDiff(initial, other metadata.Metadata) (added []metadata.Log, removed []metadata.Log) {
+	return metadataNewLogsIn(initial, other), metadataNewLogsIn(other, initial)
+}
+
+func metadataNewLogsIn(initial, other metadata.Metadata) (added []metadata.Log) {
+	for _, operator := range other.Operators {
+		for _, log := range operator.Logs {
+			if !metadataFindLog(initial, log) {
+				added = append(added, log)
+			}
+		}
+	}
+	return
+}
+
+func checkLog(log metadata.Log) error {
+	return nil // FIXME: check valid key, url, mmd, state
+}
+
+func skipLog(log metadata.Log) bool {
+	return log.State == nil || // logs without a state are considered misconfigured
+		log.State.Name == metadata.LogStatePending || // log is not yet relevant
+		log.State.Name == metadata.LogStateRetired || // log is not expected to be reachable
+		log.State.Name == metadata.LogStateRejected // log is not expected to be reachable
+}
-- 
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