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#!/bin/bash
# SPDX-License-Identifier: LGPL-2.1-or-later
set -e
set -o nounset

useradd --uid 4711 --create-home --user-group testuser

if command -v authselect >/dev/null; then
    # authselect 1.5.0 renamed the minimal profile to the local profile without keeping backwards compat so
    # let's use the new name if it exists.
    if [ -d /usr/share/authselect/default/local ]; then
        PROFILE=local
    else
        PROFILE=minimal
    fi

    authselect select "$PROFILE"

    if authselect list-features "$PROFILE" | grep -q "with-homed"; then
        authselect enable-feature with-homed
    fi
fi

# Let tmpfiles.d/systemd-resolve.conf handle the symlink. /etc/resolv.conf might be mounted over so undo that
# if that's the case.
mountpoint -q /etc/resolv.conf && umount /etc/resolv.conf
rm -f /etc/resolv.conf

for f in "$BUILDROOT"/usr/share/*.verity.sig; do
    jq --join-output '.rootHash' "$f" >"${f%.verity.sig}.roothash"
done

# We want /var/log/journal to be created on first boot so it can be created with the right chattr settings by
# systemd-journald.
rm -rf "$BUILDROOT/var/log/journal"

rm -f /etc/nsswitch.conf
cp "$SRCDIR/factory/etc/nsswitch.conf" /etc/nsswitch.conf

# Remove to make TEST-73-LOCALE pass on Ubuntu.
rm -f /etc/default/keyboard

# This is executed inside the chroot so no need to disable any features as the default features will match
# the kernel's supported features.
SYSTEMD_REPART_MKFS_OPTIONS_EXT4="" \
    systemd-repart \
    --empty=create \
    --dry-run=no \
    --size=auto \
    --offline=true \
    --root test/TEST-24-CRYPTSETUP \
    --definitions test/TEST-24-CRYPTSETUP/keydev.repart \
    "$OUTPUTDIR/keydev.raw"

can_test_pkcs11() {
    if ! command -v "softhsm2-util" >/dev/null; then
        echo "softhsm2-util not available, skipping the PKCS#11 test" >&2
        return 1
    fi
    if ! command -v "pkcs11-tool" >/dev/null; then
        echo "pkcs11-tool not available, skipping the PKCS#11 test" >&2
        return 1
    fi
    if ! command -v "certtool" >/dev/null; then
        echo "certtool not available, skipping the PKCS#11 test" >&2
        return 1
    fi
    if ! systemctl --version | grep -q "+P11KIT"; then
        echo "Support for p11-kit is disabled, skipping the PKCS#11 test" >&2
        return 1
    fi
    if ! systemctl --version | grep -q "+OPENSSL"; then
        echo "Support for openssl is disabled, skipping the PKCS#11 test" >&2
        return 1
    fi
    if ! systemctl --version | grep -q "+LIBCRYPTSETUP\b"; then
        echo "Support for libcryptsetup is disabled, skipping the PKCS#11 test" >&2
        return 1
    fi
    if ! systemctl --version | grep -q "+LIBCRYPTSETUP_PLUGINS"; then
        echo "Support for libcryptsetup plugins is disabled, skipping the PKCS#11 test" >&2
        return 1
    fi

    return 0
}

setup_pkcs11_token() {
    echo "Setup PKCS#11 token" >&2
    local P11_MODULE_CONFIGS_DIR P11_MODULE_DIR SOFTHSM_MODULE

    export SOFTHSM2_CONF="/tmp/softhsm2.conf"
    mkdir -p /usr/lib/softhsm/tokens/
    cat >$SOFTHSM2_CONF <<EOF
directories.tokendir = /usr/lib/softhsm/tokens/
objectstore.backend = file
slots.removable = false
slots.mechanisms = ALL
EOF
    export GNUTLS_PIN="1234"
    export GNUTLS_SO_PIN="12345678"
    softhsm2-util --init-token --free --label "TestToken" --pin "$GNUTLS_PIN" --so-pin "$GNUTLS_SO_PIN"

    if ! P11_MODULE_CONFIGS_DIR=$(pkg-config --variable=p11_module_configs p11-kit-1); then
        echo "WARNING! Cannot get p11_module_configs from p11-kit-1.pc, assuming /usr/share/p11-kit/modules" >&2
        P11_MODULE_CONFIGS_DIR="/usr/share/p11-kit/modules"
    fi

    if ! P11_MODULE_DIR=$(pkg-config --variable=p11_module_path p11-kit-1); then
        echo "WARNING! Cannot get p11_module_path from p11-kit-1.pc, assuming /usr/lib/pkcs11" >&2
        P11_MODULE_DIR="/usr/lib/pkcs11"
    fi

    SOFTHSM_MODULE=$(grep -F 'module:' "$P11_MODULE_CONFIGS_DIR/softhsm2.module"| cut -d ':' -f 2| xargs)
    if [[ "$SOFTHSM_MODULE" =~ ^[^/] ]]; then
        SOFTHSM_MODULE="$P11_MODULE_DIR/$SOFTHSM_MODULE"
    fi

    # RSA #####################################################
    pkcs11-tool --module "$SOFTHSM_MODULE" --token-label "TestToken" --pin "env:GNUTLS_PIN" --so-pin "env:GNUTLS_SO_PIN" --keypairgen --key-type "RSA:2048" --label "RSATestKey" --usage-decrypt

    certtool --generate-self-signed \
      --load-privkey="pkcs11:token=TestToken;object=RSATestKey;type=private" \
      --load-pubkey="pkcs11:token=TestToken;object=RSATestKey;type=public" \
      --template "test/TEST-24-CRYPTSETUP/template.cfg" \
      --outder --outfile "/tmp/rsa_test.crt"

    pkcs11-tool --module "$SOFTHSM_MODULE" --token-label "TestToken" --pin "env:GNUTLS_PIN" --so-pin "env:GNUTLS_SO_PIN" --write-object "/tmp/rsa_test.crt" --type cert --label "RSATestKey"
    rm "/tmp/rsa_test.crt"

    # prime256v1 ##############################################
    pkcs11-tool --module "$SOFTHSM_MODULE" --token-label "TestToken" --pin "env:GNUTLS_PIN" --so-pin "env:GNUTLS_SO_PIN" --keypairgen --key-type "EC:prime256v1" --label "ECTestKey" --usage-derive

    certtool --generate-self-signed \
      --load-privkey="pkcs11:token=TestToken;object=ECTestKey;type=private" \
      --load-pubkey="pkcs11:token=TestToken;object=ECTestKey;type=public" \
      --template "test/TEST-24-CRYPTSETUP/template.cfg" \
      --outder --outfile "/tmp/ec_test.crt"

    pkcs11-tool --module "$SOFTHSM_MODULE" --token-label "TestToken" --pin "env:GNUTLS_PIN" --so-pin "env:GNUTLS_SO_PIN" --write-object "/tmp/ec_test.crt" --type cert --label "ECTestKey"
    rm "/tmp/ec_test.crt"

    ###########################################################
    rm "$SOFTHSM2_CONF"
    unset SOFTHSM2_CONF

    cat >/etc/softhsm2.conf <<EOF
directories.tokendir = /usr/lib/softhsm/tokens/
objectstore.backend = file
slots.removable = false
slots.mechanisms = ALL
log.level = INFO
EOF

    mkdir -p /etc/systemd/system/systemd-cryptsetup@.service.d
    cat >/etc/systemd/system/systemd-cryptsetup@.service.d/PKCS11.conf <<EOF
[Unit]
# Make sure we can start systemd-cryptsetup@empty_pkcs11_auto.service many times
StartLimitBurst=10

[Service]
Environment="SOFTHSM2_CONF=/etc/softhsm2.conf"
Environment="PIN=$GNUTLS_PIN"
EOF

    unset GNUTLS_PIN
    unset GNUTLS_SO_PIN
}

if can_test_pkcs11; then
    setup_pkcs11_token
fi