fix(mail): use unique names for attachments

Fixes #5086

SoObjects/Mailer/SOGoDraftObject.h

@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 2007-2014 Inverse inc.
+  Copyright (C) 2007-2020 Inverse inc.
   Copyright (C) 2004-2005 SKYRIX Software AG
 
   This file is part of SOGo.
@@ -112,7 +112,7 @@
 - (NGMimeBodyPart *) bodyPartForAttachmentWithName: (NSString *) _name;
 - (NSString *) pathToAttachmentWithName: (NSString *) _name;
 - (NSException *) saveAttachment: (NSData *) _attach
-		    withMetadata: (NSDictionary *) metadata;
+		    withMetadata: (NSMutableDictionary *) metadata;
 - (NSException *) deleteAttachmentWithName: (NSString *) _name;
 
 /* NGMime representations */

SoObjects/Mailer/SOGoDraftObject.m

@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 2007-2018 Inverse inc.
+  Copyright (C) 2007-2020 Inverse inc.
   Copyright (C) 2004-2005 SKYRIX Software AG
 
   This file is part of SOGo.
@@ -838,7 +838,7 @@ static NSString    *userAgent      = nil;
 //
 - (void) _fetchAttachmentsFromMail: (SOGoMailObject *) sourceMail
 {
-  NSDictionary *currentInfo;
+  NSMutableDictionary *currentInfo;
   NSArray *attachments;
 
   unsigned int max, count;
@@ -878,12 +878,12 @@ static NSString    *userAgent      = nil;
 
       if (filename)
         {
-          NSDictionary *currentInfo;
+          NSMutableDictionary *currentInfo;
 
-          currentInfo = [NSDictionary dictionaryWithObjectsAndKeys:
-                                            filename, @"filename",
-                                      mimeType, @"mimetype",
-                                      nil];
+          currentInfo = [NSMutableDictionary dictionaryWithObjectsAndKeys:
+                                               filename, @"filename",
+                                             mimeType, @"mimetype",
+                                             nil];
           [self saveAttachment: body
                   withMetadata: currentInfo];
         }
@@ -1041,8 +1041,7 @@ static NSString    *userAgent      = nil;
 {
   BOOL fromSentMailbox;
   NGImap4Envelope *sourceEnvelope;
-  NSDictionary *attachment;
-  NSMutableDictionary *info;
+  NSMutableDictionary *attachment, *info;
   NSString *signature, *nl, *space;
   SOGoUserDefaults *ud;
 
@@ -1089,10 +1088,10 @@ static NSString    *userAgent      = nil;
           space = (isHTML ? @" " : @" ");
           [self setText: [NSString stringWithFormat: @"%@%@--%@%@%@", nl, nl, space, nl, signature]];
         }
-      attachment = [NSDictionary dictionaryWithObjectsAndKeys:
-				   [sourceMail filenameForForward], @"filename",
-				 @"message/rfc822", @"mimetype",
-				 nil];
+      attachment = [NSMutableDictionary dictionaryWithObjectsAndKeys:
+                                          [sourceMail filenameForForward], @"filename",
+                                        @"message/rfc822", @"mimetype",
+                                        nil];
       [self saveAttachment: [sourceMail content]
               withMetadata: attachment];
     }
@@ -1170,9 +1169,11 @@ static NSString    *userAgent      = nil;
  * file with its mime type.
  */
 - (NSException *) saveAttachment: (NSData *) _attach
-		    withMetadata: (NSDictionary *) metadata
+		    withMetadata: (NSMutableDictionary *) metadata
 {
-  NSString *p, *pmime, *name, *mimeType;
+  NSFileManager *fm;
+  NSString *p, *pmime, *name, *baseName, *extension, *mimeType;
+  int i;
 
   if (![_attach isNotNull])
     {
@@ -1187,7 +1188,21 @@ static NSString    *userAgent      = nil;
     }
 
   name = [[metadata objectForKey: @"filename"] asSafeFilename];
+  baseName = [name stringByDeletingPathExtension];
+  extension = [name pathExtension];
+  fm = [NSFileManager defaultManager];
   p = [self pathToAttachmentWithName: name];
+  i = 1;
+
+  while ([fm isReadableFileAtPath: p])
+    {
+      name = [NSString stringWithFormat: @"%@-%x", baseName, i];
+      if ([extension length])
+        name = [NSString stringWithFormat: @"%@.%@", name, extension];
+      p = [self pathToAttachmentWithName: name];
+      [metadata setObject: name forKey: @"filename"];
+      i++;
+    }
 
   if (![_attach writeToFile: p atomically: YES])
     {
@@ -2074,7 +2089,7 @@ static NSString    *userAgent      = nil;
           if ([[context activeUser] hasEmail: recipient])
             message = messageForSent = [self mimeMessageForRecipient: nil];
           else
-            message = [self mimeMessageForRecipient: recipient];;
+            message = [self mimeMessageForRecipient: recipient];
 
           if (!message)
             return  [NSException exceptionWithHTTPStatus: 500

UI/MailerUI/UIxMailEditor.m

@@ -525,10 +525,9 @@ static NSArray *infoKeys = nil;
   return newFilename;
 }
 
-- (NSDictionary *) _scanAttachmentFilenamesInRequest: (id) httpBody
+- (NSMutableDictionary *) _scanAttachmentFilenamesInRequest: (id) httpBody
 {
-  NSMutableDictionary *files;
-  NSDictionary *file;
+  NSMutableDictionary *files, *file;
   NSArray *parts;
   unsigned int count, max;
   NGMimeBodyPart *part;
@@ -547,11 +546,11 @@ static NSArray *infoKeys = nil;
         {
           mimeType = [(NGMimeType *)[part headerForKey: @"content-type"] stringValue];
           filename = [self _fixedFilename: [header filename]];
-          file = [NSDictionary dictionaryWithObjectsAndKeys:
-                                 filename, @"filename",
-                                 mimeType, @"mimetype",
-                                 [part body], @"body",
-                                 nil];
+          file = [NSMutableDictionary dictionaryWithObjectsAndKeys:
+                                      filename, @"filename",
+                                      mimeType, @"mimetype",
+                                      [part body], @"body",
+                                      nil];
           [files setObject: file forKey: [NSString stringWithFormat: @"%@_%@", [header name], filename]];
         }
     }
@@ -564,7 +563,8 @@ static NSArray *infoKeys = nil;
   NSException *error;
   WORequest *request;
   NSEnumerator *allAttachments;
-  NSDictionary *attrs, *filenames;
+  NSMutableDictionary *attrs;
+  NSDictionary *filenames;
   id httpBody;
   SOGoDraftObject *co;
 

UI/Templates/MailerUI/UIxMailViewTemplate.wox

@@ -330,7 +330,7 @@
             <div class="msg-body">
               <div layout="row" layout-wrap="layout-wrap">
                 <div class="mailer_mailcontent" layout="row" layout-wrap="layout-wrap"
-                     ng-repeat="part in viewer.message.$content() track by $index"
+                     ng-repeat="part in viewer.message.$content()"
                      ng-class="::part.msgclass">
                   <div class="md-flex sg-mail-part"
                        tabindex="-1"

UI/WebServerResources/js/Mailer/MessageEditorController.js

@@ -138,6 +138,7 @@
           vm.message.$setUID(response.uid);
           vm.message.$reload();
           item.inlineUrl = response.lastAttachmentAttrs[0].url;
+          item.file.name = response.lastAttachmentAttrs[0].filename;
           //console.debug(item); console.debug('success = ' + JSON.stringify(response, undefined, 2));
         },
         onCancelItem: function(item, response, status, headers) {