From d6e4aa12983c466ecff0a6fdc32e1a5c415baa68 Mon Sep 17 00:00:00 2001
From: Vitaly Takmazov
Date: Fri, 5 Oct 2018 13:23:14 +0300
Subject: ActivityPub: encode message and reply urls

---
 .../main/java/com/juick/server/ActivityPubManager.java   | 16 ++++++----------
 .../main/java/com/juick/server/api/activity/Profile.java | 16 ++++++++++++----
 2 files changed, 18 insertions(+), 14 deletions(-)

(limited to 'juick-server/src/main')

diff --git a/juick-server/src/main/java/com/juick/server/ActivityPubManager.java b/juick-server/src/main/java/com/juick/server/ActivityPubManager.java
index 77f96347..46b7177f 100644
--- a/juick-server/src/main/java/com/juick/server/ActivityPubManager.java
+++ b/juick-server/src/main/java/com/juick/server/ActivityPubManager.java
@@ -22,6 +22,7 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.stereotype.Component;
+import org.springframework.util.Base64Utils;
 import org.springframework.web.util.UriComponentsBuilder;
 
 import javax.annotation.Nonnull;
@@ -167,19 +168,14 @@ public class ActivityPubManager implements ActivityListener, NotificationListene
         return uri.replacePath(String.format("/u/%s/following/toc", user.getName())).toUriString();
     }
     public String messageUri(Message msg) {
-        UriComponentsBuilder uri = UriComponentsBuilder.fromUriString(baseUri);
-        uri.replacePath(String.format("/n/%d", msg.getMid()));
-        if (MessageUtils.isReply(msg)) {
-            uri.fragment(String.valueOf(msg.getRid()));
-        }
-        return uri.toUriString();
+        return messageUri(msg.getMid(), msg.getRid());
     }
     public String messageUri(int mid, int rid) {
         UriComponentsBuilder uri = UriComponentsBuilder.fromUriString(baseUri);
-        uri.replacePath(String.format("/n/%d", mid));
-        if (rid > 0) {
-            uri.fragment(String.valueOf(rid));
-        }
+        String postId = rid > 0 ?
+                String.format("%d#%d", mid, rid)
+                : String.valueOf(mid);
+        uri.replacePath(String.format("/n/%s", Base64Utils.encodeToUrlSafeString(postId.getBytes())));
         return uri.toUriString();
     }
 
diff --git a/juick-server/src/main/java/com/juick/server/api/activity/Profile.java b/juick-server/src/main/java/com/juick/server/api/activity/Profile.java
index 98d2ba9d..4186539d 100644
--- a/juick-server/src/main/java/com/juick/server/api/activity/Profile.java
+++ b/juick-server/src/main/java/com/juick/server/api/activity/Profile.java
@@ -25,6 +25,7 @@ import org.springframework.beans.factory.annotation.Value;
 import org.springframework.context.ApplicationEventPublisher;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
+import org.springframework.util.Base64Utils;
 import org.springframework.web.bind.annotation.*;
 import org.springframework.web.servlet.support.ServletUriComponentsBuilder;
 import org.springframework.web.util.UriComponents;
@@ -222,10 +223,17 @@ public class Profile {
         throw new HttpNotFoundException();
     }
 
-    @GetMapping(value = "/n/{mid}", produces = {Context.LD_JSON_MEDIA_TYPE, Context.ACTIVITY_JSON_MEDIA_TYPE})
-    public Context showNote(@PathVariable int mid) {
-        Message message = messagesService.getMessage(mid);
-        return Context.build(activityPubManager.makeNote(message));
+    @GetMapping(value = "/n/{base64id}", produces = {Context.LD_JSON_MEDIA_TYPE, Context.ACTIVITY_JSON_MEDIA_TYPE})
+    public Context showNote(@PathVariable String base64id) {
+        String postId = new String(Base64Utils.decodeFromUrlSafeString(base64id));
+        String[] ids = postId.split("#", 2);
+        if (ids.length > 1) {
+            // reply
+            return Context.build(activityPubManager.makeNote(
+                    messagesService.getReply(Integer.valueOf(ids[0]), Integer.valueOf(ids[1]))));
+        }
+        return Context.build(activityPubManager.makeNote(
+                messagesService.getMessage(Integer.valueOf(ids[0]))));
     }
 
     @PostMapping(value = "/api/inbox", consumes = {Context.LD_JSON_MEDIA_TYPE, Context.ACTIVITY_JSON_MEDIA_TYPE})
-- 
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