Disable attachments for non-friends

Signal/src/ViewControllers/ConversationView/ConversationInputToolbar.h

@@ -59,6 +59,7 @@ NS_ASSUME_NONNULL_BEGIN
 - (void)setPlaceholderText:(NSString *)placeholderText;
 - (void)clearTextMessageAnimated:(BOOL)isAnimated;
 - (void)toggleDefaultKeyboard;
+- (void)setAttachmentButtonHidden:(BOOL)isHidden;
 
 - (void)updateFontSizes;
 

Signal/src/ViewControllers/ConversationView/ConversationInputToolbar.m

@@ -362,6 +362,11 @@ const CGFloat kMaxTextViewHeight = 98;
     [self.inputTextView reloadInputViews];
 }
 
+- (void)setAttachmentButtonHidden:(BOOL)isHidden
+{
+    [self.attachmentButton setHidden:isHidden];
+}
+
 - (void)setQuotedReply:(nullable OWSQuotedReplyModel *)quotedReply
 {
     if (quotedReply == _quotedReply) {

Signal/src/ViewControllers/ConversationView/ConversationViewController.m

@@ -1646,6 +1646,8 @@ typedef enum : NSUInteger {
     [self.inputToolbar setUserInteractionEnabled:!hasPendingFriendRequest];
     NSString *placeholderText = hasPendingFriendRequest ? NSLocalizedString(@"Pending Friend Request...", "") : NSLocalizedString(@"New Message", "");
     [self.inputToolbar setPlaceholderText:placeholderText];
+    BOOL isContactFriend = self.thread.isContactFriend;
+    [self.inputToolbar setAttachmentButtonHidden:!isContactFriend];
 }
 
 #pragma mark - Identity