From bd8f277b9129a48a95ee19a2a3ec41d13aa66d4a Mon Sep 17 00:00:00 2001
From: fiaxh <git@lightrise.org>
Date: Sat, 14 Jun 2025 17:50:07 +0200
Subject: Add basic support for BOB thumbnails in SFS

---
 xmpp-vala/src/module/util.vala                            | 12 ++++++++++++
 xmpp-vala/src/module/xep/0231_bits_of_binary.vala         | 10 ----------
 .../src/module/xep/0264_jingle_content_thumbnails.vala    | 15 ++++-----------
 3 files changed, 16 insertions(+), 21 deletions(-)

(limited to 'xmpp-vala')

diff --git a/xmpp-vala/src/module/util.vala b/xmpp-vala/src/module/util.vala
index 28f1a5f8..076c327f 100644
--- a/xmpp-vala/src/module/util.vala
+++ b/xmpp-vala/src/module/util.vala
@@ -12,6 +12,18 @@ public string random_uuid() {
     return "%08x-%04x-%04x-%04x-%04x%08x".printf(b1, b2, b3, b4, b5_1, b5_2);
 }
 
+public Bytes? get_data_for_uri(string uri) {
+    if (uri.has_suffix("@bob.xmpp.org")) {
+        string cid = uri.replace("cid:", "");
+        return Xep.BitsOfBinary.known_bobs[cid];
+    } else if (uri.has_prefix("data:image/png;base64,")) {
+        return new Bytes.take(Base64.decode(uri.replace("data:image/png;base64,", "")));
+    } else {
+        warning("Couldn't parse data from uri %s", uri);
+        return null;
+    }
+}
+
 public abstract class StanzaListener<T> : OrderedListener {
 
     public abstract async bool run(XmppStream stream, T stanza);
diff --git a/xmpp-vala/src/module/xep/0231_bits_of_binary.vala b/xmpp-vala/src/module/xep/0231_bits_of_binary.vala
index cd756b5e..7e811045 100644
--- a/xmpp-vala/src/module/xep/0231_bits_of_binary.vala
+++ b/xmpp-vala/src/module/xep/0231_bits_of_binary.vala
@@ -6,16 +6,6 @@ namespace Xmpp.Xep.BitsOfBinary {
 
     public static HashMap<string, Bytes> known_bobs = null;
 
-    public Bytes? get_data_for_uri(string uri) {
-        if (uri.has_suffix("@bob.xmpp.org")) {
-            string cid = uri.replace("cid:", "");
-            return BitsOfBinary.known_bobs[cid];
-        } else if (uri.has_prefix("data:image/png;base64,")) {
-            return new Bytes.take(Base64.decode(uri.replace("data:image/png;base64,", "")));
-        }
-        return null;
-    }
-
     public class Module : XmppStreamModule {
         public static ModuleIdentity<Module> IDENTITY = new ModuleIdentity<Module>(NS_URI, "bits_of_binary");
 
diff --git a/xmpp-vala/src/module/xep/0264_jingle_content_thumbnails.vala b/xmpp-vala/src/module/xep/0264_jingle_content_thumbnails.vala
index 5dba0c6d..d408e94b 100644
--- a/xmpp-vala/src/module/xep/0264_jingle_content_thumbnails.vala
+++ b/xmpp-vala/src/module/xep/0264_jingle_content_thumbnails.vala
@@ -13,15 +13,16 @@ namespace Xmpp.Xep.JingleContentThumbnails {
     }
 
     public class Thumbnail {
-        public string uri;
         public Bytes data;
         public string? media_type;
         public int width;
         public int height;
 
         public StanzaNode to_stanza_node() {
+            string data_uri = "data:image/png;base64," + Base64.encode(data.get_data());
+
             StanzaNode node = new StanzaNode.build("thumbnail", NS_URI).add_self_xmlns()
-                    .put_attribute("uri", this.uri);
+                    .put_attribute("uri", data_uri);
             if (this.media_type != null) {
                 node.put_attribute("media-type", this.media_type);
             }
@@ -38,17 +39,9 @@ namespace Xmpp.Xep.JingleContentThumbnails {
             string uri = node.get_attribute("uri");
             if (uri == null) return null;
 
-            string? data_uri = null;
-            Bytes data = BitsOfBinary.get_data_for_uri(uri);
-
-            if (uri.has_suffix("@bob.xmpp.org")) {
-                data_uri = "data:image/png;base64," + Base64.encode(data.get_data());
-            } else if (uri.has_prefix("data:image/png;base64,")) {
-                data_uri = uri;
-            }
+            Bytes data = Xmpp.get_data_for_uri(uri);
 
             Thumbnail thumbnail = new Thumbnail();
-            thumbnail.uri = data_uri;
             thumbnail.data = data;
             thumbnail.media_type = node.get_attribute("media-type");
             thumbnail.width = node.get_attribute_int("width");
-- 
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