$ wget -Avcf -r -np -l0 --no-check-certificate -e robots=off --user=user
    --password='password' https://cloud.domain.com/foo/carddav

grep ".vcf" index.html | awk -F"href=" '{print $2}' | awk -F" '{print $2}' > ALL_VCF_FILES.lst
for elt in `cat ALL_VCF_FILES.lst`
do
wget https://cloud.some_domain.com/remote.php/carddav/addressbooks/your_name/$elt
done
rm ALL_VCF_FILES.lst index.html