Description

I really like this Add-On and have been using it for a long time, thank you very much!

Unfortunately the connection to KeepassXC does not work in my new installation of Ubuntu 24.04. Thunderbird is installed as a Snap. I followed the instructions to create the JSON file in ~/.mozilla/native-messaging-hosts. I have tried KeePassXC installed with Apt and also as Snap, and also updated the JSON file after switching.

Expected Behaviour

keepassxc-mail in Thunderbird (Snap) should be able to connect to KeePassXC (Snap). It works with Firefox (Snap).

It worked fine in Thunderbird in my old installation of Ubuntu 22.04 (Thunderbird and KeePassXC both installed as Snap, IIRC). Unfortunately the SSD stopped working, so I started with Ubuntu 24.04 for the new installation. But I still have a backup, so I could look up configuration files etc. if that should help.

I would like to stick with the Snap installations (especially Thunderbird) because of its presumably better isolation and better protection against security vulnerabilities.

Current Behaviour

When trying to get messages or to reconnect native messaging, one of these messages are logged in /var/log/syslog:

thunderbird_thunderbird.desktop[32246]: console.error: WebExtensions:
thunderbird_thunderbird.desktop[32246]:   Unable to connect to native messaging

thunderbird_thunderbird.desktop[29846]: JavaScript error: , line 0: uncaught exception: Unable to connect to native messaging

Can the problem be caused by AppArmor preventing access to D-Bus? Not sure if AppArmor was active in my previous Ubuntu 22.04 but probably not.
This message is logged when starting Thunderbird:

dbus-daemon[4470]: apparmor="DENIED" operation="dbus_method_call"  bus="session" path="/org/a11y/bus" interface="org.freedesktop.DBus.Properties" member="Get" mask="send" name="org.a11y.Bus" pid=29642 label="snap.thunderbird.thunderbird" peer_pid=4783 peer_label="unconfined"

Other observations and log outputs:

• After starting Thunderbird, it hangs for 10 or 20 seconds ("Thunderbird Mail is not responding"). Not sure if that is related.

• When getting messages (IMAP), the password dialog does not always show up but only after retrying "Get Messages" a few times (or after a certain time?). It shows "Loading passwords..." for a while, then "No passwords found" and a "Retry" button. That button immediately leads to "No passwords found" most of the time (but sometimes shows "Loading passwords..." for a while).

• In the plugin settings, after clicking "Reconnect to Native Messaging", the button changes to inactive and shows "Reconnecting to Native Messaging" (without ever changing back as far as I observed). After switching to another tab and then back to the settings, the button is active again.

• The button "Connect to KeePassXC" changes to inactive for a second or so and then reverts to active. It does not improve the situation.

• Content of de.kkapsner.keepassxc_mail.json:

  thomas@rubino:~$ cat ~/.mozilla/native-messaging-hosts/de.kkapsner.keepassxc_mail.json
  {
      "name": "de.kkapsner.keepassxc_mail",
      "description": "KeePassXC integration with native messaging support",
      "path": "/snap/bin/keepassxc.proxy",
      "type": "stdio",
      "allowed_extensions": [
          "[email protected]"
      ]
  }
  

• Content of .thunderbird/profiles.ini (might be relevant because I created a new profile with the old data in a user-defined path and renamed that profile to "default"):

  root@rubino:~# cat /home/thomas/snap/thunderbird/common/.thunderbird/profiles.ini
  [Profile0]
  Name=default
  IsRelative=0
  Path=/home/thomas/data/appdata/Thunderbird/Profile
  Default=1
  
  [General]
  StartWithLastProfile=1
  Version=2
  

• Log outputs when opening the Add-On settings:

  thunderbird_thunderbird.desktop[29642]: WARNING: content window passed to PrivateBrowsingUtils.isWindowPrivate. Use isContentWindowPrivate instead (but only for frame scripts).
  thunderbird_thunderbird.desktop[29642]: pbu_isWindowPrivate@resource://gre/modules/PrivateBrowsingUtils.sys.mjs:23:11
  thunderbird_thunderbird.desktop[29642]: isBrowserPrivate@resource://gre/modules/PrivateBrowsingUtils.sys.mjs:43:19
  thunderbird_thunderbird.desktop[29642]: fixupAndLoadURIString@resource://gre/modules/RemoteWebNavigation.sys.mjs:129:56
  thunderbird_thunderbird.desktop[29642]: fixupAndLoadURIString/<@chrome://global/content/elements/browser-custom-element.js:840:28
  thunderbird_thunderbird.desktop[29642]: _wrapURIChangeCall@chrome://global/content/elements/browser-custom-element.js:768:9
  thunderbird_thunderbird.desktop[29642]: fixupAndLoadURIString@chrome://global/content/elements/browser-custom-element.js:839:12
  thunderbird_thunderbird.desktop[29642]: fixupAndLoadURIString@chrome://mozapps/content/extensions/aboutaddons.js:1852:18
  thunderbird_thunderbird.desktop[29642]: render/<@chrome://mozapps/content/extensions/aboutaddons.js:1831:14
  thunderbird_thunderbird.desktop[29642]: render@chrome://mozapps/content/extensions/aboutaddons.js:1790:11
  thunderbird_thunderbird.desktop[29642]: waitForPromise@jar:file:///home/thomas/data/appdata/Thunderbird/Profile/extensions/[email protected]!/experiment/implementation.js:1237:15
  thunderbird_thunderbird.desktop[29642]: waitForCredentials@jar:file:///home/thomas/data/appdata/Thunderbird/Profile/extensions/[email protected]!/experiment/implementation.js:1247:9
  thunderbird_thunderbird.desktop[29642]: initPromptFunction/promptFunction.replacement@jar:file:///home/thomas/data/appdata/Thunderbird/Profile/extensions/[email protected]!/experiment/implementation.js:455:46
  thunderbird_thunderbird.desktop[29642]: _promiseAuthPrompt/<@resource:///modules/MsgAsyncPrompter.jsm:54:18
  thunderbird_thunderbird.desktop[29642]: _promiseAuthPrompt@resource:///modules/MsgAsyncPrompter.jsm:52:12
  thunderbird_thunderbird.desktop[29642]: run@resource:///modules/MsgAsyncPrompter.jsm:77:23
  

• Log outputs when starting Thunderbird:

  2024-05-31T11:19:52.501241+02:00 rubino systemd[4435]: Started snap.thunderbird.thunderbird-f8f60d26-12d2-4b3d-b223-f13088477506.scope.
  2024-05-31T11:19:52.809820+02:00 rubino thunderbird-bin[29642]: Not loading module "atk-bridge": The functionality is provided by GTK natively. Please try to not load it.
  2024-05-31T11:19:52.930286+02:00 rubino thunderbird-bin[29642]: GTK+ module /snap/thunderbird/478/gnome-platform/usr/lib/gtk-2.0/modules/libcanberra-gtk-module.so cannot be loaded.#012GTK+ 2.x symbols detected. Using GTK+ 2.x and GTK+ 3 in the same process is not supported.
  2024-05-31T11:19:52.930464+02:00 rubino thunderbird-bin[29642]: Failed to load module "canberra-gtk-module"
  2024-05-31T11:19:52.932347+02:00 rubino thunderbird-bin[29642]: GTK+ module /snap/thunderbird/478/gnome-platform/usr/lib/gtk-2.0/modules/libcanberra-gtk-module.so cannot be loaded.#012GTK+ 2.x symbols detected. Using GTK+ 2.x and GTK+ 3 in the same process is not supported.
  2024-05-31T11:19:52.932475+02:00 rubino thunderbird-bin[29642]: Failed to load module "canberra-gtk-module"
  2024-05-31T11:19:53.059695+02:00 rubino thunderbird_thunderbird.desktop[29642]: [ImapModuleLoader] Using nsImapService.cpp
  2024-05-31T11:19:53.502137+02:00 rubino thunderbird_thunderbird.desktop[29642]: [GFX1-]: glxtest: libpci missing
  2024-05-31T11:19:53.822248+02:00 rubino dbus-daemon[4470]: apparmor="DENIED" operation="dbus_method_call"  bus="session" path="/org/a11y/bus" interface="org.freedesktop.DBus.Properties" member="Get" mask="send" name="org.a11y.Bus" pid=29642 label="snap.thunderbird.thunderbird" peer_pid=4783 peer_label="unconfined"
  2024-05-31T11:19:54.829545+02:00 rubino thunderbird_thunderbird.desktop[29642]: console.debug: "Found 4 public keys and 0 secret keys (0 protected, 0 unprotected)"
  
  2024-05-31T11:19:57.313754+02:00 rubino thunderbird_thunderbird.desktop[29642]: console.log: WebExtensions: KeePassXC-Mail: unable to get smtpEnterPasswordPromptTitle from bundle compose
  2024-05-31T11:19:57.315027+02:00 rubino thunderbird_thunderbird.desktop[29642]: console.log: WebExtensions: KeePassXC-Mail: unable to get smtpEnterPasswordPromptTitle from bundle compose
  2024-05-31T11:19:57.316972+02:00 rubino thunderbird_thunderbird.desktop[29642]: console.log: WebExtensions: KeePassXC-Mail: unable to get imapEnterPasswordPromptTitle from bundle imap
  2024-05-31T11:19:57.317413+02:00 rubino thunderbird_thunderbird.desktop[29642]: console.log: WebExtensions: KeePassXC-Mail: unable to get pop3EnterPasswordPromptTitle from bundle local
  2024-05-31T11:19:57.317772+02:00 rubino thunderbird_thunderbird.desktop[29642]: console.log: WebExtensions: KeePassXC-Mail: unable to get pop3EnterPasswordPromptTitle from bundle local
  2024-05-31T11:19:57.319604+02:00 rubino thunderbird_thunderbird.desktop[29642]: console.log: WebExtensions: KeePassXC-Mail: unable to get loginDialog.label from bundle wcap
  2024-05-31T11:19:57.319907+02:00 rubino thunderbird_thunderbird.desktop[29642]: console.log: WebExtensions: KeePassXC-Mail: unable to get loginDialog.label from bundle wcap
  2024-05-31T11:19:57.320155+02:00 rubino thunderbird_thunderbird.desktop[29642]: console.log: WebExtensions: KeePassXC-Mail: unable to get PromptUsernameAndPassword2 from bundle commonDialog
  2024-05-31T11:19:57.320573+02:00 rubino thunderbird_thunderbird.desktop[29642]: console.log: WebExtensions: KeePassXC-Mail: unable to get PromptUsernameAndPassword2 from bundle commonDialog
  2024-05-31T11:19:57.321286+02:00 rubino thunderbird_thunderbird.desktop[29642]: console.log: WebExtensions: KeePassXC-Mail: unable to get PromptPassword2 from bundle commonDialog
  2024-05-31T11:19:57.322808+02:00 rubino thunderbird_thunderbird.desktop[29642]: console.log: WebExtensions: KeePassXC-Mail: unable to get CertPassPromptDefault from bundle pipnss
  
  2024-05-31T11:20:00.024109+02:00 rubino thunderbird_thunderbird.desktop[29642]: JavaScript warning: resource://gre/modules/Troubleshoot.sys.mjs, line 710: WebGL context was lost.
  2024-05-31T11:20:00.031570+02:00 rubino thunderbird_thunderbird.desktop[29642]: JavaScript warning: resource://gre/modules/Troubleshoot.sys.mjs, line 710: WebGL context was lost.
  2024-05-31T11:20:00.115117+02:00 rubino thunderbird_thunderbird.desktop[29642]: JavaScript error: chrome://messenger/content/about-support/chat.js, line 53: NS_ERROR_FAILURE: Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [imIAccountsService.getAccounts]
  
  2024-05-31T11:20:46.439904+02:00 rubino thunderbird_thunderbird.desktop[29642]: console.error: WebExtensions:
  2024-05-31T11:20:46.441513+02:00 rubino thunderbird_thunderbird.desktop[29642]:   Unable to connect to native messaging
  
  2024-05-31T11:20:56.477606+02:00 rubino thunderbird_thunderbird.desktop[29642]: console.error: WebExtensions:
  2024-05-31T11:20:56.477765+02:00 rubino thunderbird_thunderbird.desktop[29642]:   Unable to connect to native messaging
  
  2024-05-31T11:20:58.939863+02:00 rubino thunderbird_thunderbird.desktop[29642]: console.error: carddav.sync: "Sync with server failed."
  2024-05-31T11:20:58.995422+02:00 rubino thunderbird_thunderbird.desktop[29642]: JavaScript error: resource:///modules/CardDAVUtils.jsm, line 212: NS_ERROR_FAILURE: Authorization failure
  
  2024-05-31T11:21:11.502057+02:00 rubino thunderbird_thunderbird.desktop[29642]: console.warn: Calendar: No unique email address for lookup!
  
  2024-05-31T11:21:17.017783+02:00 rubino syncthing[3703]: [44NT3] INFO: Scanner (folder "thomas/appdata" (zkr5u-theia), item "Thunderbird/Profile/global-messages-db.sqlite"): hashing: file changed during hashing
  
  2024-05-31T11:21:26.709801+02:00 rubino thunderbird_thunderbird.desktop[29642]: console.error: WebExtensions:
  2024-05-31T11:21:26.710127+02:00 rubino thunderbird_thunderbird.desktop[29642]:   Unable to connect to native messaging
  2024-05-31T11:21:26.816988+02:00 rubino thunderbird_thunderbird.desktop[29642]: console.error: WebExtensions:
  2024-05-31T11:21:26.817076+02:00 rubino thunderbird_thunderbird.desktop[29642]:   Unable to connect to native messaging
  2024-05-31T11:21:36.784922+02:00 rubino thunderbird_thunderbird.desktop[29642]: console.error: WebExtensions:
  2024-05-31T11:21:36.785363+02:00 rubino thunderbird_thunderbird.desktop[29642]:   Unable to connect to native messaging
  2024-05-31T11:21:36.949409+02:00 rubino thunderbird_thunderbird.desktop[29642]: console.error: WebExtensions:
  2024-05-31T11:21:36.949507+02:00 rubino thunderbird_thunderbird.desktop[29642]:   Unable to connect to native messaging
  
  2024-05-31T11:21:41.033920+02:00 rubino thunderbird_thunderbird.desktop[29642]: console.warn: Calendar: No unique email address for lookup!
  2024-05-31T11:21:42.948644+02:00 rubino thunderbird_thunderbird.desktop[29642]: message repeated 6 times: [ console.warn: Calendar: No unique email address for lookup!]
  

• Log outputs related to missing language files in the previous default profile directory (that I replaced with the old profile in a different path as described above):

  2024-05-31T11:50:03.478138+02:00 rubino thunderbird_thunderbird.desktop[32246]: JavaScript error: resource://gre/modules/Extension.sys.mjs, line 945: Error: Error while loading 'jar:file:///home/thomas/snap/thunderbird/common/.thunderbird/111dkyvx.default/extensions/[email protected]!/manifest.json' (NS_ERROR_FAILURE)
  2024-05-31T11:50:03.478562+02:00 rubino thunderbird_thunderbird.desktop[32246]: JavaScript error: resource://gre/modules/Extension.sys.mjs, line 945: Error: Error while loading 'jar:file:///home/thomas/snap/thunderbird/common/.thunderbird/111dkyvx.default/extensions/[email protected]!/manifest.json' (NS_ERROR_FAILURE)
  2024-05-31T11:50:03.478655+02:00 rubino thunderbird_thunderbird.desktop[32246]: JavaScript error: resource://gre/modules/Extension.sys.mjs, line 945: Error: Error while loading 'jar:file:///home/thomas/snap/thunderbird/common/.thunderbird/111dkyvx.default/extensions/[email protected]!/manifest.json' (NS_ERROR_FAILURE)
  2024-05-31T11:50:03.478688+02:00 rubino thunderbird_thunderbird.desktop[32246]: JavaScript error: resource://gre/modules/Extension.sys.mjs, line 945: Error: Error while loading 'jar:file:///home/thomas/snap/thunderbird/common/.thunderbird/111dkyvx.default/extensions/[email protected]!/manifest.json' (NS_ERROR_FAILURE)
  

Possible Solution

If the problem is caused by AppArmor, it should be possible to modify the AppArmor settings for Thunderbird to enable that (but I do not know how to do that), best without modification of /var/lib/snapd/apparmor/profiles/snap.thunderbird.thunderbird

Steps to Reproduce (for bugs)

What I did:

1. Install Ubuntu 24.04. Thunderbird and Firefox are installed by default as Snaps.
2. Install KeepassXC with Apt (because at that time the Snap was not up-to-date and no longer supported?).
3. Create a new Thunderbird profile from a backup of the previous installation.
4. Create the configuration file in native-messaging-hosts.
5. Remove and re-install the keepassxc-mail Add-On.
6. Install KeepassXC with Snap and update the native-messaging-hosts configuration.

Context

Trying to make keepassxc-mail work in Thunderbird (Snap) in a new installation of Ubuntu 24.04.

Your Environment

• KeePassXC-mail version used: 1.7
• KeePassXC version: Version 2.7.8, Revision: f6757d3, Distribution: Snap (also tried Apt installation)
• Thunderbird version: 115.11.0 (64-bit) installed as Snap
• Operating system and version: Ubuntu 24.04 LTS
  Linux rubino 6.8.0-31-generic #31-Ubuntu SMP PREEMPT_DYNAMIC Sat Apr 20 00:40:06 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux