|
| 1 | +#!/bin/bash |
| 2 | + |
| 3 | +set -e |
| 4 | + |
| 5 | + |
| 6 | +fetch_secret_keys() { |
| 7 | + # Fetch secret keys using provided namespace |
| 8 | + secret_key=$(kubectl get secret "${namespace[@]}" $secret_name \ |
| 9 | + -o jsonpath='{.data.DJANGO_SECRET_KEY}' | base64 --decode) |
| 10 | + encryption_keys=$(kubectl get secret "${namespace[@]}" $secret_name \ |
| 11 | + -o jsonpath='{.data.ENCRYPTION_KEYS}' | base64 --decode) |
| 12 | + echo "Django secret key hash: $(echo -n "$secret_key" | md5)" |
| 13 | + if [ -z "$encryption_keys" ]; then echo "No encryption keys found, Django secret key is thus used for DB encryption"; fi |
| 14 | + for key in ${encryption_keys//,/ }; do # loop over comma separated |
| 15 | + echo "DB encryption key hash: $(echo -n "$key" | md5)" |
| 16 | + done |
| 17 | +} |
| 18 | + |
| 19 | +rotate_secret_keys() { |
| 20 | + echo "Starting rotation of encryption keys in namespace ${namespace[1]}" |
| 21 | + echo "After deployment, this will invalidate all current user sessions, as well as password reset links" |
| 22 | + echo "Complete rotation will be done after completion of all rotation jobs in admin area" |
| 23 | + echo "Do you want to continue? [yN]" && read -r confirm && [[ "$confirm" == [yY] ]] || exit 1 |
| 24 | + |
| 25 | + backup=$(mktemp) |
| 26 | + kubectl kots get config --appslug $app_name "${namespace[@]}" --decrypt > "$backup" |
| 27 | + echo "Backup of KOTS config written to $backup" |
| 28 | + # Generate new django secret key |
| 29 | + new_django_key=$(LC_ALL=C tr -dc A-Za-z0-9 </dev/urandom | head -c 50 ) |
| 30 | + echo "Setting new key with hash $(echo -n "$new_django_key" | md5)" |
| 31 | + current_key=$(kubectl get secret "${namespace[@]}" $secret_name \ |
| 32 | + -o jsonpath='{.data.DJANGO_SECRET_KEY}' | base64 --decode) |
| 33 | + current_encryption_keys=$(kubectl get secret "${namespace[@]}" $secret_name \ |
| 34 | + -o jsonpath='{.data.ENCRYPTION_KEYS}' | base64 --decode) |
| 35 | + |
| 36 | + # new encryption starts with new key, that will be used for re-encryption, then current key for fallback |
| 37 | + if [ -n "$current_encryption_keys" ]; then |
| 38 | + new_encryption_keys=$(echo -n "$new_django_key,$current_encryption_keys,$current_key") |
| 39 | + else |
| 40 | + new_encryption_keys=$(echo -n "$new_django_key,$current_key") |
| 41 | + fi |
| 42 | + config_values=$(mktemp) |
| 43 | + trap "rm -f $config_values" EXIT |
| 44 | + cat <<EOF > "$config_values" |
| 45 | +apiVersion: kots.io/v1beta1 |
| 46 | +kind: ConfigValues |
| 47 | +spec: |
| 48 | + values: |
| 49 | + django_secret_key: |
| 50 | + value: $new_django_key |
| 51 | + db_encryption_keys: |
| 52 | + value: $new_encryption_keys |
| 53 | +EOF |
| 54 | + |
| 55 | + # Set it directly in KOTS config values |
| 56 | + kubectl kots set config $app_name "${namespace[@]}" \ |
| 57 | + --config-file "$config_values" --merge |
| 58 | + |
| 59 | + echo "App configuration is updated with new keys" |
| 60 | + echo "Please go to the admin console and deploy the new version" |
| 61 | + echo "When completed, go to the admin area to perform the rotation of the database encrypted fields" |
| 62 | + echo "Do you want to launch admin console now? [yN]" && read -r launch |
| 63 | + [[ "$launch" == [yY] ]] && kubectl kots admin-console "${namespace[@]}" |
| 64 | +} |
| 65 | + |
| 66 | +namespace=() |
| 67 | + |
| 68 | +usage() { |
| 69 | + echo "GitGuardian secrets rotation" |
| 70 | + echo "Usage: $0 [--namespace NAMESPACE] (status|rotate)" |
| 71 | + exit 0 |
| 72 | +} |
| 73 | + |
| 74 | +# Parse command line options |
| 75 | +while [[ $# -gt 0 ]] |
| 76 | +do |
| 77 | + key="$1" |
| 78 | + case $key in |
| 79 | + --namespace|-n) |
| 80 | + namespace=( "--namespace" "$2" ) |
| 81 | + shift # past argument |
| 82 | + shift # past value |
| 83 | + ;; |
| 84 | + status) |
| 85 | + action=fetch_secret_keys |
| 86 | + shift # past argument |
| 87 | + ;; |
| 88 | + rotate) |
| 89 | + action=rotate_secret_keys |
| 90 | + shift # past argument |
| 91 | + ;; |
| 92 | + --help|-h|help) |
| 93 | + usage=1 |
| 94 | + shift ;; |
| 95 | + *) |
| 96 | + # Unknown option |
| 97 | + echo "Unknown action: $key" |
| 98 | + ;; |
| 99 | + esac |
| 100 | +done |
| 101 | + |
| 102 | +[ -n "$usage" ] && usage |
| 103 | +if [ -z "$action" ] && [ -z "$usage" ]; then echo "No action specified"; exit 1; fi |
| 104 | +if [ -z "${namespace[*]}" ]; then echo "No namespace specified"; exit 1; fi |
| 105 | + |
| 106 | +app_name=$(kubectl kots get apps "${namespace[@]}" | cut -d ' ' -f 1 | tail -n 1) |
| 107 | + |
| 108 | +case "$app_name" in |
| 109 | + gitguardian-seal) # v1 legacy |
| 110 | + secret_name="gitguardian-env-variables" ;; |
| 111 | + gitguardian) # v2 |
| 112 | + secret_name="gim-secrets" ;; |
| 113 | + *) |
| 114 | + echo "Unknown app name: $app_name" && exit 1 ;; |
| 115 | +esac |
| 116 | + |
| 117 | +[ -n "$action" ] && eval "$action" |
0 commit comments