CardDAV-to-Asterisk import

This script reads all contacts from a CardDAV address book and puts them into Asterisk's internal caller id database. That way Asterisk can show a caller's name instead of just the number.

If there's already an entry in Asterisk's caller database for a specific number, this script updates the number with the new name.

So far I have run this script successfully with OwnCloud 9 to Nextcloud 21 and DAViCal 1.1.10.

Requirements

• Python 3
• Additional Python 3 modules: requests, vobjects, panoramisk, lxml (Install in Debian/Ubuntu/Mint: apt-get install python3-requests python3-vobject python3-panoramisk python3-lxml)

Usage

Configuration

1. This script uses Asterisk Manager Interface (AMI) to write to the caller id database, so you need to set up an user with "write" permissions to "system": To add such an user, create a file /etc/asterisk/manager.d/carddav2asterisk.conf like this:

    [carddavimport]
    secret = TopSecret
    permit = 127.0.0.1/255.255.255.0
    write = system
   

   After creating the file reload Asterisk.

2. Create an ini file like this (you may use the included example.ini as a starting point):

    [ami]
    user = carddavimport
    pass = TopSecret
    host = localhost
    port = 5038
   
    [carddav]
    url = https://nextcloud.example.com/remote.php/dav/addressbooks/users/russmeyer/contacts/
    user = russmeyer
    pass = Evelyn1928
   
    [phone]
    nationalprefix = 0049
    domesticprefix = 089
   

   The [ami] section must contain the connection parameters to Asterisk Manager Interface.

   The [carddav] section must contain the connection parameters to your CardDAV server.

   The [phone] section is optional. You may use this to clean up the phone numbers before they get written into Asterisk's database. Set nationalprefix to your national prefix to remove it from phone numbers. Set domesticprefix to your local area code to add it to phone numbers without domestic prefix. If in doubt simply omit the [phone] section.

3. If you haven't configured CID lookup (means: "Caller ID lookup", so that your phone shows the callers' names instead of their phone numbers) in Asterisk yet, you may want to add something like this somewhere at the beginning of your dialplan in extensions.conf: exten => <yourExtension>,n,Set(CALLERID(name)=${IF(${DB_EXISTS(cidname/${CALLERID(num)})}?${DB(cidname/${CALLERID(num)})}:${CALLERID(name)})})

How to run the script

./carddav2asterisk.py [--no-update] <ini file>

Example: ./carddav2asterisk.py example.ini

If you use the --no-update switch, the script will not write anything to Asterisk but only show what would be done.