calendar import creates wave of invitation mails

[Florz]

Steps to reproduce

1. go to calendar app
2. import calendar that contains mail adresses associated with appointments

Expected behaviour

No mails should be sent if a calendar is imported.

Actual behaviour

All participants of old appointments received an invitation mail.

Server configuration

Operating system:
Debian GNU/Linux testing
Web server:
Debian GNU/Linux testing
Database:
mysql Ver 14.14 Distrib 5.6.28
PHP version:
PHP 5.6.17-3
ownCloud version: (see ownCloud admin page)
9.0.0-1.1
Updated from an older ownCloud or fresh install:
updated
Where did you install ownCloud from:
deb https://download.owncloud.org/download/repositories/stable/Debian_8.0/ /
Signing status (ownCloud 9.0 and above):
No errors have been found.
List of activated apps:

Enabled:
  - activity: 2.2.1
  - calendar: 1.0
  - comments: 0.2
  - contacts: 1.0.0.0
  - dav: 0.1.5
  - documents: 0.12.0
  - federatedfilesharing: 0.1.0
  - federation: 0.0.4
  - files: 1.4.4
  - files_external: 0.5.2
  - files_mv: 0.8.2
  - files_pdfviewer: 0.8
  - files_sharing: 0.9.1
  - files_texteditor: 2.1
  - files_trashbin: 0.8.0
  - files_versions: 1.2.0
  - files_videoplayer: 0.9.8
  - firstrunwizard: 1.1
  - gallery: 14.5.0
  - mail: 0.3.0
  - news: 7.1.2
  - notifications: 0.2.3
  - provisioning_api: 0.4.1
  - search_lucene: 0.6.0
  - systemtags: 0.2
  - templateeditor: 0.1
  - updatenotification: 0.1.0
  - user_external: 0.4
Disabled:
  - encryption
  - external
  - user_ldap

The content of config/config.php:

<?php
$CONFIG = array (
  'instanceid' => 'xxx',
  'passwordsalt' => 'xxx',
  'trusted_domains' => 
  array (
    0 => 'xxx.xx',
    1 => 'xxx.xxx.xxx.xxx',
    2 => 'xxx.xxx.xxx.xxx',
  ),
  'datadirectory' => '/var/www/owncloud/data',
  'overwritewebroot' => '/owncloud',
  'overwrite.cli.url' => '/owncloud',
  'dbtype' => 'mysql',
  'dbname' => 'owncloud',
  'dbuser' => 'xxx',
  'dbpassword' => 'xxx',
  'dbhost' => 'localhost',
  'dbtableprefix' => 'oc_',
  'version' => '9.0.0.19',
  'installed' => true,
  'theme' => '',
  'forcessl' => true,
  'mail_from_address' => 'root',
  'mail_smtpmode' => 'smtp',
  'mail_domain' => 'xxx.xx',
  'loglevel' => 0,
  'mail_smtphost' => '127.0.0.1',
  'mail_smtpname' => 'xxx',
  'mail_smtppassword' => 'xxxxxxxxxxxxxxxx',
  'mail_smtpport' => '25',
  'log_rotate_size' => '100 MiB',
  'maintenance' => false,
  'secret' => 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx',
  'preview_libreoffice_path' => '/usr/bin/libreoffice',
  'memcache.local' => '\\OC\\Memcache\\APCu',
  'trashbin_retention_obligation' => 'auto',
);

Are you using external storage, if yes which one: local/smb/sftp/...
no (mounted otherwise)
Are you using encryption: yes/no
no
Are you using an external user-backend, if yes which one: LDAP/ActiveDirectory/Webdav/...
no

Client configuration

Browser:
Firefox
Operating system:
debian testing

Logs

Web server error log

[...]

ownCloud log (data/owncloud.log)

[...]

Browser log

[...]

@MorrisJobke

[MorrisJobke]

@DeepDiver1975 That is what I wrote to you minutes ago in IRC

[MorrisJobke]

import calendar that contains mail adresses associated with appointments

Ah. It was not during migration (automatically handled during the upgrade to 9.0) but while importing a new calendar?

[DeepDiver1975]

Ah - we are talking about import ...

[DeepDiver1975]

Technically speaking there is no difference between creating a new event and importing one.
In both cases they are created in the db and any related processing triggered - also sending out notifications

[Florz]

Yes, I have two calendars. Due to the problems with caldav I tried to reimport one of them. After that I noticed those invitation mails. But only for this specific calendar. So I assume this has nothing to do with the migration.

[floeff]

I can confirm this problem with 9.0.2. Started from a fresh install, imported via ICS files only, and e-mails were sent out for old appointments to me as well as to the participants.

[ownclouders]

Hey, this issue has been closed because the label status/STALE is set and there were no updates for 7 days. Feel free to reopen this issue if you deem it appropriate.

(This is an automated comment from GitMate.io.)

[linkp]

This is still a problem. I was lucky and caught it on a calendar that sent only 3 invitations, but I have another that I need to import that could potentially have a lot more.
Nextcloud appears to have addressed at least some of the problem:
nextcloud/server#2855

[stale]

This issue has been automatically closed.

[kevincox]

This is still a problem. It is incredibly surprising that moving my calendar into nextcloud spams all of my contacts who already know about these events. I think there should be an option in the import dialog about this.

[phil-davis]

"moving my calendar into nextcloud" - note, this is an issue in the ownCloud core repo.