From 753958659dd552ad07f5d6ddf303d49e111e4af1 Mon Sep 17 00:00:00 2001
From: Greg Heartsfield <scsibug@imap.cc>
Date: Wed, 24 Nov 2021 22:10:42 -0600
Subject: [PATCH] Check event tag filter

---
 src/event.rs        | 13 +++++++++++++
 src/subscription.rs |  7 +++++++
 2 files changed, 20 insertions(+)

diff --git a/src/event.rs b/src/event.rs
index 96fc319..48ecb12 100644
--- a/src/event.rs
+++ b/src/event.rs
@@ -56,6 +56,19 @@ impl Event {
     pub fn is_valid(&self) -> bool {
         false
     }
+    // check if given event is referenced in a tag
+    pub fn event_tag_match(&self, event: &str) -> bool {
+        for t in self.tags.iter() {
+            if t.len() == 2 {
+                if t.get(0).unwrap() == "#e" {
+                    if t.get(1).unwrap() == event {
+                        return true;
+                    }
+                }
+            }
+        }
+        return false;
+    }
 }
 
 #[cfg(test)]
diff --git a/src/subscription.rs b/src/subscription.rs
index 7c3b99e..9e188f3 100644
--- a/src/subscription.rs
+++ b/src/subscription.rs
@@ -135,6 +135,13 @@ impl ReqFilter {
             false
         } else if !self.author_match(&event.pubkey) {
             false
+        } else if !self
+            .event
+            .as_ref()
+            .map(|e| event.event_tag_match(e))
+            .unwrap_or(true)
+        {
+            false
         // event: Option<String>,
         // pubkey: Option<String>,
         // since: Option<u64>,