From bc1e54aa1292d271941418957dc51c3023190164 Mon Sep 17 00:00:00 2001
From: Jason Volk <jason@zemos.net>
Date: Fri, 19 Jun 2020 22:22:54 -0700
Subject: [PATCH] ircd::m::event: Minor rename; additional diagnostic
 arguments.

---
 include/ircd/m/event/event.h |  2 +-
 matrix/event.cc              | 13 +++++++------
 modules/console.cc           | 23 +++++++++++++++++++++++
 3 files changed, 31 insertions(+), 7 deletions(-)

diff --git a/include/ircd/m/event/event.h b/include/ircd/m/event/event.h
index 307a4adae..618a679f2 100644
--- a/include/ircd/m/event/event.h
+++ b/include/ircd/m/event/event.h
@@ -121,7 +121,7 @@ struct ircd::m::event
 	static conf::item<size_t> max_size;
 
 	static bool my(const idx &);
-	static json::object referential(const mutable_buffer &, const json::object &);
+	static json::object preimage(const mutable_buffer &, const json::object &);
 	static void essential(json::iov &event, const json::iov &content, const closure_iov_mutable &);
 	static bool verify(const json::object &, const ed25519::pk &, const ed25519::sig &sig);
 	static ed25519::sig sign(const string_view &, const ed25519::sk &);
diff --git a/matrix/event.cc b/matrix/event.cc
index a362963a0..a4f55ef5d 100644
--- a/matrix/event.cc
+++ b/matrix/event.cc
@@ -182,14 +182,14 @@ ircd::sha256::buf
 ircd::m::event::hash(const json::object &event_)
 {
 	thread_local char buf[event::MAX_SIZE];
-	const json::object event
+	const json::object preimage
 	{
-		referential(buf, event_)
+		event::preimage(buf, event_)
 	};
 
 	return sha256
 	{
-		event
+		preimage
 	};
 }
 
@@ -915,8 +915,8 @@ catch(const json::not_found &e)
 }
 
 ircd::json::object
-ircd::m::event::referential(const mutable_buffer &buf,
-                            const json::object &event)
+ircd::m::event::preimage(const mutable_buffer &buf_,
+                         const json::object &event)
 try
 {
 	static const size_t iov_max{json::iov::max_size};
@@ -936,9 +936,10 @@ try
 		member.at(i++) = m;
 	}
 
+	mutable_buffer buf{buf_};
 	const string_view ret
 	{
-		json::stringify(mutable_buffer(buf), member.data(), member.data() + i)
+		json::stringify(buf, member.data(), member.data() + i)
 	};
 
 	return ret;
diff --git a/modules/console.cc b/modules/console.cc
index 366d46452..f3b3a117c 100644
--- a/modules/console.cc
+++ b/modules/console.cc
@@ -14296,6 +14296,29 @@ console_cmd__fed__event(opt &out, const string_view &line)
 		return true;
 	}
 
+	if(has(op, "essential"))
+	{
+		const unique_mutable_buffer buf
+		{
+			m::event::MAX_SIZE
+		};
+
+		out << m::essential(response, buf) << std::endl;
+		return true;
+	}
+
+	if(has(op, "preimage"))
+	{
+		const unique_mutable_buffer buf
+		{
+			m::event::MAX_SIZE
+		};
+
+		const string_view preimage(m::event::preimage(buf, response));
+		out << preimage << std::endl;
+		return true;
+	}
+
 	m::event::id::buf _event_id;
 	const m::event event
 	{