.gitignore

@@ -1,4 +1,3 @@
 dtrfs.tar
 build
 tmp
-target

README.md

@@ -1,37 +1,17 @@
-## OS template
-
 You will need a working OS template to work with this project.
 
 Easy solution create an OS template:
-- start any archlinux machine (the arch installer also works)
-- install `arch-install-scripts`
-- run `pacstrap /mnt base openssh` to install base packages to /mnt
+- mount the archlinux installation .iso in a VM
+- run `pacstrap /mnt base linux openssh`
 - run `ln -s /usr/lib/systemd/system/sshd.service /mnt/etc/systemd/system/multi-user.target.wants/sshd.service`
-- run `fsarchiver savedir /tmp/os_template.fsa /mnt` to save your OS template
-- download `/tmp/os_template.fsa` to your machine
+- run `fsarchiver savedir /tmp/os_template.fsa /mnt`
+- download `/tmp/os_template.fsa`
 - upload the `os_template.fsa` anywhere so that it can be downloaded with wget
 
 Some notes on the above:
-- base is the only package required to run a dtrfs VM; the kernel is not needed cause we are using SNP
+- base and linux are the only packages to run a VM
 - you will need sshd to operate the VM, so create the symlink to make it start with the OS
 - fsarchiver is very good at preserving OS data
-- fsarchiver saves the absolute path (which means you must use `/mnt` as this is hardcoded)
 - the initrd will dump that template to the encrypted disk
 - the same procedure can be used with any distribution, but we didn't test that yet
 
-## initrd and linux
-
-You will need an initrd and a kernel to run SNP VMs.
-
-- start any archlinux machine
-- clone this repo
-- inspect your kernel version by running `file -sL /boot/vmlinuz-linux`.
-- (optional) update the kernel version in `./creator_exports.sh`
-- create the initrd by running `./create.sh`; this will save the initrd in the build folder
-- grab your kernel from `/boot/vmlinuz-linux` and...
-- ... upload kernel and initrd to your hypervizor
-
-## module scanner
-
-Optionally, you can use `./remote_create.sh` to upload this repo to remote node and build your initrd.
-This will automatically scan the kernel modules running on the remote host, and package all modules in the initrd. This is ideal if your VM has a setup that is not cover by the modules hardcoded in this repo.

create.sh

@@ -5,9 +5,6 @@ source creator_functions.sh
 mkdir -p build
 cd build
 
-echo_cyan "Installing build dependencies..."
-install_build_deps
-
 echo_cyan "Starting installation at $ROOT."
 create_dirs
 
@@ -23,25 +20,27 @@ install_binary $(which mkfs.ext4)
 install_binary $(which fsarchiver)
 install_kmod
 install_busybox
-install_dtrfs_api
+install_guest_api
 
 echo_cyan "Installing scripts..."
 install_init_script
 
-echo_cyan "Installing base modules required to boot"
+echo_cyan "Installing kernel modules..."
+# # Uncomment this section if you want to grab modules from the guest OS
+# scan_modules
 install_module virtio_net
 install_module ext4
 install_module virtio_blk
+install_module msr
 install_module sev-guest
 install_module dm_crypt
+install_module hid-generic
 install_module dm-integrity
-
-install_guest_mods
-
-[[ "$GRAB_LOCAL_MODS" == "YES" ]] && {
-  scan_modules
-  backup_active_modules
-}
+install_module cbc
+install_module hmac
+install_module sha256
+install_module rng
+install_module aes
 
 echo_cyan "Building module dependency tree..."
 cp /lib/modules/${KERNEL}/modules.{order,builtin,builtin.modinfo} "${ROOT}/lib/modules/${KERNEL}/"

creator_exports.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+script_dir=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
+
+# root of the initrd, that will be used to create the cpio archive
+export ROOT="${script_dir}/build/initrd_root"
+export BUSYBOX_PATH="/usr/lib/initcpio/busybox"
+export KERNEL="$(uname -r)"

creator_functions.sh

@@ -16,24 +16,11 @@ echo_red() {
   echo -e "\033[0;31m$1\033[0m"
 }
 
-# TODO: prepare DTRFS to create initrd for other distros
-install_build_deps() {
-  if grep "Arch Linux" /etc/os-release > /dev/null; then
-    which wget fsarchiver cpio mkinitcpio || {
-      echo_red "Please install build deps: wget fsarchiver cpio mkinitcpio"
-      exit 1
-    }
-    qemu_guest_modules="../arch_guest_mods"
-  else
-    echo_red "ArchLinux is the only distribution currently supported by DTRFS."
-    exit 1
-  fi
-}
-
 create_dirs() {
   rm -rf "$ROOT" 2>/dev/null
+  mkdir -p "${ROOT}/usr/bin/"
   mkdir -p "${ROOT}/usr/bin"
-  mkdir -p "${ROOT}/usr/lib/dtrfs"
+  mkdir -p "${ROOT}/usr/lib"
   mkdir -p "${ROOT}/dev"
   mkdir -p "${ROOT}/etc"
   mkdir -p "${ROOT}/mnt"
@@ -46,9 +33,9 @@ create_dirs() {
   ln -s usr/bin "${ROOT}/sbin"
   ln -s usr/lib "${ROOT}/lib"
   ln -s usr/lib "${ROOT}/lib64"
-  ln -s lib     "${ROOT}/usr/lib64"
-  ln -s bin     "${ROOT}/usr/sbin"
-  ln -s ../run  "${ROOT}/var/run"
+  ln -s lib "${ROOT}/usr/lib64"
+  ln -s bin "${ROOT}/usr/sbin"
+  ln -s ../run "${ROOT}/var/run"
 }
 
 # Installs a library. Expects absolute path.
@@ -115,8 +102,7 @@ install_busybox() {
 
 install_init_script() {
   cp ../init.sh "${ROOT}/init"
-  cp ../init_functions.sh "${ROOT}/usr/lib/dtrfs/"
-  cp ../install_os.sh "${ROOT}/usr/lib/dtrfs/"
+  cp ../init_functions.sh "${ROOT}/"
 }
 
 install_module() {
@@ -149,28 +135,8 @@ _install_module() {
   done <<< "$( echo "$depends" )"
 }
 
-install_guest_mods() {
-  local mod=''
-  echo_cyan "Installing kernel modules needed for QEMU guests..."
-  while read -r mod; do
-    [[ -z $mod ]] && continue
-    _install_module "$mod"
-  done <<< "$(cat "$qemu_guest_modules")"
-}
-
-backup_active_modules() {
-  local modules='' mod=''
-  echo_yellow "Installing to the initrd all kernel modules currently loaded..."
-  modules="$(lsmod | awk '{ print $1 }' | grep -v Module)"
-  while read -r mod; do
-    [[ -z $mod ]] && continue
-    _install_module "$mod"
-  done <<< "$( echo "$modules" )"
-}
-
 scan_modules() {
   local drivers='' mod=''
-  echo_yellow "Installing kernel modules based on current hardware..."
   install_module "$(df -T / | awk '{ print $2 }' | tail -1)"
 
   drivers=$(lshw -c disk 2>/dev/null | grep -oE 'driver=[a-z\_\-]+' | cut -d '=' -f2;
@@ -182,24 +148,29 @@ scan_modules() {
   done <<< "$( echo "$drivers" )"
 }
 
-install_dtrfs_api() {
-  local my_location="$(pwd)"
-  cd ../../dtrfs_api && cargo build --release || {
-    echo_yellow "Could not build dtrfs_api. Looking for binary at $(pwd)/dtrfs_api"
-  }
-  cd "$my_location"
-  cp ../../dtrfs_api/target/release/dtrfs_api ./
-  install_binary "$(pwd)/dtrfs_api"
+install_guest_api() {
+  my_location="$(pwd)"
+  echo_blue "Building guest_api with cargo and saving log to ${my_location}/guest_api.log"
+  git clone git@gitea.detee.cloud:SNP/remote_decryption.git
+  cd remote_decryption/guest_api
+  # TODO: stick to master branch after code stabilizes
+  git checkout dtrfs
+  git pull
+  cargo build --release > "${my_location}/guest_api.log" 2>&1 ||
+    echo_red "Failed to build guest_api"
+  strip --discard-all target/release/guest_api
+  install_binary "$(pwd)/target/release/guest_api"
+  cd $my_location
 }
 
 create_archive() {
   local archive="detee-$(hostnamectl hostname)-${KERNEL}.cpio.gz"
-  echo_cyan "Creating archive build/$archive"
+  echo_cyan "Creating archive $archive"
   echo $archive > .archive_name
   my_location="$(pwd)"
   cd ${ROOT}
   find . | cpio -o -H newc | gzip \
     > "${my_location}/detee-$(hostnamectl hostname)-${KERNEL}.cpio.gz"
 
-  cd "$my_location"
+  cd $my_location
 }

dtrfs_api/Cargo.toml

@@ -1,18 +0,0 @@
-[package]
-name = "dtrfs_api"
-version = "0.1.0"
-edition = "2021"
-
-[dependencies]
-anyhow = "1.0.93"
-base64 = "0.22.1"
-bincode = "1.3.3"
-regex = "1.11.1"
-sev = { version = "4.0", default-features = false, features = ['crypto_nossl','snp'] }
-ed25519-dalek = { version = "2.1.1", features = ["pem", "pkcs8"] }
-lazy_static = "1.5.0"
-actix-web = { version = "4.9.0", features = ["rustls-0_23"] }
-sha3 = "0.10.8"
-rustls = "0.23.18"
-rustls-pemfile = "2.2.0"
-serde = { version = "1.0.215", features = ["derive"] }

dtrfs_api/rustfmt.toml

@@ -1,3 +0,0 @@
-reorder_impl_items = true
-use_small_heuristics = "Max"
-merge_imports = true

dtrfs_api/src/main.rs

@@ -1,205 +0,0 @@
-mod os;
-mod snp;
-
-use actix_web::{get, post, web, App, HttpRequest, HttpResponse, HttpServer};
-use base64::prelude::{Engine, BASE64_URL_SAFE};
-use ed25519_dalek::{pkcs8::DecodePublicKey, Signature, Verifier, VerifyingKey};
-use lazy_static::lazy_static;
-use regex::Regex;
-use rustls::{pki_types::PrivateKeyDer, ServerConfig};
-use rustls_pemfile::{certs, pkcs8_private_keys};
-use serde::Deserialize;
-use sha3::{Digest, Sha3_512};
-use std::{
-    fs::File,
-    io::{BufReader, Read},
-};
-
-const CRT_FILE: &str = "/tmp/certs/dtrfs_api.crt";
-const KEY_FILE: &str = "/tmp/certs/dtrfs_api.key";
-const CMDLINE_FILE: &str = "/proc/cmdline";
-
-lazy_static! {
-    static ref SNP_REPORT: String = snp::get_report_as_base64(get_cert_hash()).unwrap();
-    static ref CRT_CONTENTS: String = {
-        let mut msg = String::new();
-        let _ = BufReader::new(File::open(CRT_FILE).unwrap()).read_to_string(&mut msg);
-        msg
-    };
-    static ref CMDLINE: String = {
-        let mut cmdline = String::new();
-        let _ = BufReader::new(File::open(CMDLINE_FILE).unwrap()).read_to_string(&mut cmdline);
-        cmdline
-    };
-}
-
-fn get_cert_hash() -> [u8; 64] {
-    let mut hasher = Sha3_512::new();
-    let crt = File::open(CRT_FILE).expect("Could not open crt file.");
-    let mut buf_reader = BufReader::new(crt);
-    let mut buffer = Vec::new();
-    buf_reader.read_to_end(&mut buffer).expect("Could not read certificate.");
-    hasher.update(buffer);
-    let crt_hash = hasher.finalize();
-    crt_hash.into()
-}
-
-fn verifying_key() -> Result<VerifyingKey, Box<dyn std::error::Error>> {
-    let re = Regex::new(r"detee_admin=([A-Za-z0-9+/=]+)").unwrap();
-    let key_str = re.find(&CMDLINE).map(|m| m.as_str()).unwrap_or("");
-    let key_pem = format!(
-        "-----BEGIN PUBLIC KEY-----\n{}\n-----END PUBLIC KEY-----\n",
-        key_str.strip_prefix("detee_admin=").ok_or("Could not get admin key from cmdline")?
-    );
-    Ok(VerifyingKey::from_public_key_pem(&key_pem)?)
-}
-
-fn verify(req: &HttpRequest) -> Result<(), Box<dyn std::error::Error>> {
-    let signature = req
-        .headers()
-        .get("ed25519-signature")
-        .ok_or_else(|| "Did not find ed25519-signature header")?;
-
-    let signature: &[u8] = &BASE64_URL_SAFE.decode(signature)?;
-    let signature = Signature::from_bytes(signature.try_into()?);
-    let verifying_key = verifying_key()?;
-    Ok(verifying_key.verify(CRT_CONTENTS.as_bytes(), &signature)?)
-}
-
-#[get("/")]
-async fn homepage() -> HttpResponse {
-    let mut text: String = "Available commands:\n".to_string();
-    text += "GET: /report /ssh_key\n";
-    text += "POST: /install /decrypt /switch_root /ssh_key\n";
-    text += "\nAll requests require the ed25519-signature header";
-    HttpResponse::Ok().body(text)
-}
-
-#[get("/report")]
-async fn get_report() -> HttpResponse {
-    HttpResponse::Ok().body(SNP_REPORT.clone())
-}
-
-#[derive(Deserialize)]
-struct InstallForm {
-    url: String,
-    sha: String,
-    keyfile: String,
-}
-
-// TODO: QA this function to make sure we don't accidentally allow empty string keyfile
-#[post("/install")]
-async fn post_install_form(req: HttpRequest, form: web::Form<InstallForm>) -> HttpResponse {
-    if let Err(e) = verify(&req) {
-        return HttpResponse::BadRequest().body(format!("Signature verification failed: {}", e));
-    };
-    match os::encrypt_and_install_os(&form.url, &form.sha, &form.keyfile) {
-        Ok(s) => HttpResponse::Ok().body(s),
-        Err(e) => HttpResponse::InternalServerError().body(format!("{e:?}")),
-    }
-}
-
-#[derive(Deserialize)]
-struct DecryptForm {
-    keyfile: String,
-}
-
-// TODO: QA this function to make sure we don't accidentally allow empty string keyfile
-#[post("/decrypt")]
-async fn post_decrypt_form(req: HttpRequest, form: web::Form<DecryptForm>) -> HttpResponse {
-    if let Err(e) = verify(&req) {
-        return HttpResponse::BadRequest().body(format!("Signature verification failed: {}", e));
-    };
-    let decrypt_result = os::try_backup_keyfile(&form.keyfile);
-    if let Err(decryption_error) = decrypt_result {
-        return HttpResponse::BadRequest()
-            .body(format!("Could not decrypt root: {decryption_error:?}"));
-    }
-    let hot_key_result = os::replace_hot_keyfile();
-    HttpResponse::Ok().body(format!("{:?}\n{:?}", decrypt_result, hot_key_result))
-}
-
-#[post("/switch_root")]
-async fn post_process_exit(req: HttpRequest) -> HttpResponse {
-    if let Err(e) = verify(&req) {
-        return HttpResponse::BadRequest().body(format!("Signature verification failed: {}", e));
-    };
-    std::process::exit(0);
-}
-
-#[derive(Deserialize)]
-struct SSHKeyForm {
-    ssh_key: String,
-}
-
-#[get("/ssh_key")]
-async fn get_ssh_keys(req: HttpRequest) -> HttpResponse {
-    if let Err(e) = verify(&req) {
-        return HttpResponse::BadRequest().body(format!("Signature verification failed: {}", e));
-    };
-    match os::list_ssh_keys() {
-        Ok(keys) => HttpResponse::Ok().body(keys),
-        Err(e) => HttpResponse::BadRequest().body(format!("{e:?}")),
-    }
-}
-
-#[post("/ssh_key")]
-async fn post_ssh_key(req: HttpRequest, form: web::Form<SSHKeyForm>) -> HttpResponse {
-    if let Err(e) = verify(&req) {
-        return HttpResponse::BadRequest().body(format!("Signature verification failed: {}", e));
-    };
-    let ssh_key = &form.ssh_key;
-    match os::add_ssh_key(ssh_key) {
-        Ok(()) => HttpResponse::Ok().body("Key added to authorized_keys"),
-        Err(e) => HttpResponse::BadRequest().body(format!("{e:?}")),
-    }
-}
-
-fn load_rustls_config() -> rustls::ServerConfig {
-    rustls::crypto::aws_lc_rs::default_provider().install_default().unwrap();
-
-    let config = ServerConfig::builder().with_no_client_auth();
-
-    let cert_file = &mut BufReader::new(File::open(CRT_FILE).unwrap());
-    let key_file = &mut BufReader::new(File::open(KEY_FILE).unwrap());
-
-    let cert_chain = certs(cert_file).collect::<Result<Vec<_>, _>>().unwrap();
-    let mut keys = pkcs8_private_keys(key_file)
-        .map(|key| key.map(PrivateKeyDer::Pkcs8))
-        .collect::<Result<Vec<_>, _>>()
-        .unwrap();
-
-    if keys.is_empty() {
-        eprintln!("Could not locate PKCS 8 private keys.");
-        std::process::exit(1);
-    }
-
-    config.with_single_cert(cert_chain, keys.remove(0)).unwrap()
-}
-
-#[actix_web::main]
-async fn main() -> std::io::Result<()> {
-    match os::try_hot_keyfile() {
-        Ok(_) => {
-            println!("Hot decryption successful. Booting OS...");
-            return Ok(());
-        },
-        Err(e) => {
-            println!("Hot decryption failed: {e:?}");
-        }
-    }
-    let config = load_rustls_config();
-    HttpServer::new(|| {
-        App::new()
-            .service(post_install_form)
-            .service(post_decrypt_form)
-            .service(post_process_exit)
-            .service(post_ssh_key)
-            .service(get_ssh_keys)
-            .service(get_report)
-            .service(homepage)
-    })
-    .bind_rustls_0_23("[::]:8443", config)?
-    .run()
-    .await
-}

dtrfs_api/src/os.rs

@@ -1,147 +0,0 @@
-use crate::snp::get_derived_key;
-use anyhow::{anyhow, Result};
-use base64::prelude::{Engine, BASE64_URL_SAFE};
-use std::{
-    fs::File,
-    io::{BufRead, BufReader, Write},
-    path::Path,
-    process::Command,
-};
-
-const SNP_KEYFILE_PATH: &str = "/tmp/detee_snp_keyfile";
-const BACKUP_KEYFILE_PATH: &str = "/tmp/detee_backup_keyfile";
-
-pub fn encrypt_and_install_os(
-    install_url: &str,
-    install_sha: &str,
-    keyfile: &str,
-) -> Result<String> {
-    let binary_keyfile = BASE64_URL_SAFE.decode(keyfile)?;
-    std::fs::write(BACKUP_KEYFILE_PATH, binary_keyfile)?;
-    // this path is hardcoded also in the initrd creation script
-    let install_result = Command::new("/usr/lib/dtrfs/install_os.sh")
-        .env("INSTALL_URL", install_url)
-        .env("INSTALL_SHA", install_sha)
-        .env("SNP_KEY_FILE", SNP_KEYFILE_PATH)
-        .env("ROOT_KEYFILE", BACKUP_KEYFILE_PATH)
-        .output()?;
-
-    if !install_result.status.success() {
-        return Err(anyhow!(
-            "OS installation script failed.\nScript stdout:\n{}\nScript stderr:\n{}",
-            String::from_utf8(install_result.stdout)
-                .unwrap_or("Could not grab stdout from installation script.".to_string()),
-            String::from_utf8(install_result.stderr)
-                .unwrap_or("Could not grab stderr from installation script.".to_string()),
-        ));
-    }
-    Ok(format!(
-        "Successfully installed OS. Script stdout:\n{}\nScript stderr:\n{}",
-        String::from_utf8(install_result.stdout)
-            .unwrap_or("Could not grab stdout from installation script.".to_string()),
-        String::from_utf8(install_result.stderr)
-            .unwrap_or("Could not grab stderr from installation script.".to_string()),
-    ))
-}
-
-pub fn try_hot_keyfile() -> Result<()> {
-    let hot_key = get_derived_key()?;
-    std::fs::write(SNP_KEYFILE_PATH, hot_key)?;
-    decrypt_and_mount(SNP_KEYFILE_PATH)?;
-    Ok(())
-}
-
-pub fn try_backup_keyfile(keyfile: &str) -> Result<String> {
-    let binary_keyfile = BASE64_URL_SAFE.decode(keyfile)?;
-    std::fs::write(BACKUP_KEYFILE_PATH, binary_keyfile)?;
-    decrypt_and_mount(BACKUP_KEYFILE_PATH)?;
-    Ok("Succesfully mounted /mnt using backup keyfile.".to_string())
-}
-
-fn decrypt_and_mount(keyfile_path: &str) -> Result<()> {
-    let decryption_result = Command::new("cryptsetup")
-        .arg("open")
-        .arg("--key-file")
-        .arg(keyfile_path)
-        .arg("/dev/vda1")
-        .arg("root")
-        .output()?;
-    if !decryption_result.status.success() {
-        return Err(anyhow!("Could not decrypt disk."));
-    }
-    let mount_result = Command::new("mount").arg("/dev/mapper/root").arg("/mnt").output()?;
-    if !mount_result.status.success() {
-        return Err(anyhow!("Could not mount /dev/mapper/root to /mnt"));
-    }
-    Ok(())
-}
-
-pub fn replace_hot_keyfile() -> Result<String> {
-    let _delete_old_keyfile = Command::new("cryptsetup")
-        .arg("luksKillSlot")
-        .arg("-d")
-        .arg(BACKUP_KEYFILE_PATH)
-        .arg("/dev/vda1")
-        .arg("1")
-        .output();
-
-    let meta = std::fs::metadata(SNP_KEYFILE_PATH)?;
-    if meta.len() == 0 {
-        return Err(anyhow!("Could not replace hot keyfile using SNP KDF."));
-    }
-
-    let _add_hot_keyfile = Command::new("cryptsetup")
-        .arg("luksAddKey")
-        .arg("--key-file")
-        .arg(BACKUP_KEYFILE_PATH)
-        .arg("--new-keyfile")
-        .arg(SNP_KEYFILE_PATH)
-        .arg("/dev/vda1")
-        .output();
-
-    Ok("Succesfully replaced hot keyfile using SNP KDF.".to_string())
-}
-
-pub fn add_ssh_key(key: &str) -> Result<()> {
-    use std::os::unix::fs::PermissionsExt;
-    if !Path::new("/mnt/etc/os-release").try_exists().is_ok_and(|found| found == true) {
-        return Err(anyhow!(
-            "Operating system not mounted. Please install OS or decrypt existing OS."
-        ));
-    }
-
-    let encoded_key: Vec<&str> = key.split(" ").collect();
-    if encoded_key.len() < 2 {
-        return Err(anyhow!("Supplied key is expected to have at least two words."));
-    }
-    if let Ok(keys) = File::open("/mnt/.ssh/authorized_keys") {
-        let mut buffered = BufReader::new(keys).lines();
-        while let Some(Ok(k)) = buffered.next() {
-            if k.contains(encoded_key[1]) {
-                return Err(anyhow!("authorized_keys already contains {key}"));
-            }
-        }
-    } else {
-        std::fs::create_dir_all("/mnt/root/.ssh")?;
-        let permissions = std::fs::Permissions::from_mode(0o700);
-        std::fs::set_permissions("/mnt/root/.ssh", permissions)?;
-        std::fs::OpenOptions::new()
-            .create(true)
-            .write(true)
-            .open("/mnt/root/.ssh/authorized_keys")?;
-        let permissions = std::fs::Permissions::from_mode(0o600);
-        std::fs::set_permissions("/mnt/root/.ssh/authorized_keys", permissions)?;
-    }
-
-    let mut keys_file = std::fs::OpenOptions::new()
-        .append(true) // Open in append mode
-        .create(true) // Create the file if it doesn't exist
-        .open("/mnt/root/.ssh/authorized_keys")?;
-    writeln!(keys_file, "{key}")?;
-
-    Ok(())
-}
-
-pub fn list_ssh_keys() -> Result<String> {
-    Ok(std::fs::read_to_string("/mnt/root/.ssh/authorized_keys")?)
-}

dtrfs_api/src/snp.rs

@@ -1,21 +0,0 @@
-use anyhow::{Context, Result};
-use sev::firmware::guest::{AttestationReport, DerivedKey, Firmware, GuestFieldSelect};
-use base64::prelude::{Engine, BASE64_URL_SAFE};
-
-fn request_hardware_report(data: [u8; 64]) -> Result<AttestationReport> {
-    let mut fw = Firmware::open().context("unable to open /dev/sev-guest")?;
-    fw.get_report(None, Some(data), Some(0)).context("unable to fetch attestation report")
-}
-
-pub fn get_report_as_base64(data: [u8; 64]) -> Result<String> {
-    let report = request_hardware_report(data)?;
-    Ok(BASE64_URL_SAFE.encode(bincode::serialize(&report)?))
-}
-
-pub fn get_derived_key() -> Result<String> {
-    let mut fw = Firmware::open()?;
-    let request =
-        DerivedKey::new(false, GuestFieldSelect(u64::from_str_radix("11111", 2)?), 1, 0, 0);
-    let derived_key: [u8; 32] = fw.get_derived_key(None, request)?;
-    Ok(BASE64_URL_SAFE.encode(derived_key))
-}

init.sh

@@ -0,0 +1,30 @@
+#!/bin/bash
+source /init_functions.sh
+
+export INSTALL_URL="/tmp/detee_install_url"
+export INSTALL_SHA="/tmp/detee_install_sha"
+export ROOT_KEYFILE="/tmp/detee_root_keyfile"
+export SSH_KEY_FILE="/tmp/detee_ssh_key"
+
+create_mounts
+load_modules
+create_certs
+setup_network
+
+# if you wait a bit, it works. The Kernel works in mysterious ways.
+sleep 5
+modprobe sev_guest
+
+guest_api || echo DeTEE API got killed by the user.
+
+if [[ -f "$INSTALL_URL" ]]; then 
+  install_os
+else
+  mount_root
+fi
+
+# TODO: take into consideration to remove github key injection
+github_ssh_key
+detee_ssh_key
+
+exec switch_root /mnt /sbin/init "$@"

init_functions.sh

@@ -1,5 +1,13 @@
 #!/bin/bash
 
+echo_blue() {
+  echo -e "\033[34m$1\033[0m"
+}
+
+echo_red() {
+  echo -e "\033[0;31m$1\033[0m"
+}
+
 load_modules() {
   cat /load_modules.sh | bash
 }
@@ -27,15 +35,14 @@ create_mounts() {
 
 create_certs() {
   cert_dir="/tmp/certs"
-  key="$cert_dir/dtrfs_api.key"
-  cert="$cert_dir/dtrfs_api.crt"
-  subject="/C=W3/O=DeTEE/OU=COCO/CN=dtrfs-api"
+  key="$cert_dir/guest_api.key"
+  cert="$cert_dir/guest_api.crt"
+  subject="/C=W3/O=DeTEE/OU=COCO/CN=guest-api"
   mkdir -p "$cert_dir"
   openssl genpkey -algorithm RSA -out "$key" \
     -pkeyopt rsa_keygen_bits:4096 2>/dev/null
   openssl req -x509 -new \
     -key "$key" -out "$cert" \
-    -addext "subjectAltName=DNS:dtrfs-api" \
     -days 365 -subj "$subject" 2>/dev/null
 }
 
@@ -56,22 +63,68 @@ setup_network() {
   ip link set eth0 up
   ip route add default via $gateway
   echo nameserver $nameserver > /etc/resolv.conf
-  sleep 2
+  sleep 4
   ping -c 2 $gateway
 }
 
+install_os() {
+  local url="$(cat $INSTALL_URL)" hostname=''
+  # mount root if it exists
+  blkid | grep vda1 | grep LUKS && {
+    mount_root
+    return 0
+  }
+  # install OS if disk is empty
+  (
+    echo n
+    echo p
+    echo 
+    echo 
+    echo 
+    echo w
+  ) | fdisk /dev/vda
+  cryptsetup luksFormat --batch-mode -d $ROOT_KEYFILE /dev/vda1
+  cryptsetup open -d $ROOT_KEYFILE /dev/vda1 root
+  mkfs.ext4 /dev/mapper/root
+  mount /dev/mapper/root /mnt
+  wget -O /mnt/template.fsa "$url"
+  sha256sum /mnt/template.fsa | grep $(cat ${INSTALL_SHA}) || exit 1
+  fsarchiver restdir /mnt/template.fsa /
+  rm /mnt/template.fsa
+  # TODO: decide for UX if maybe we should allow user to inject fstab
+  echo "" > /mnt/etc/fstab
+  hostname=$(cat /proc/cmdline | grep -oE 'detee_name=[0-9a-z\_\.\-]+' | cut -d '=' -f2)
+  [[ -n "$hostname" ]] && echo $hostname > /mnt/etc/hostname
+}
 
 # detee_ghu stands for GitHub user and expects format detee_ghu=ghe0
 github_ssh_key() {
   local key=''
-  github_user=$(cat /proc/cmdline | grep -oE 'detee_ghu=[0-9a-zA-Z\_\.\-]+' | cut -d '=' -f2)
+  github_user=$(cat /proc/cmdline | grep -oE 'detee_ghu=[0-9a-z\_\.\-]+' | cut -d '=' -f2)
   [[ -z "$github_user" ]] && return 0
   mkdir -p /mnt/root/.ssh
   cd /mnt/root/.ssh
   touch authorized_keys
   key="$(wget -O - https://github.com/${github_user}.keys)"
-  grep -F "$( echo $key | awk '{ print $2 }' )" authorized_keys > /dev/null || {
+  grep -F "$( echo $key | awk '{ print $2 }' )" authorized_keys || {
     echo "$key" >> authorized_keys
     chmod 600 authorized_keys
   }
 }
+
+# this can be injected through the guest_api
+detee_ssh_key() {
+  local key=''
+  mkdir -p /mnt/root/.ssh
+  [[ -f "$SSH_KEY_FILE" ]] && while read -r key; do
+    grep -F "$( echo $key | awk '{ print $2 }' )" authorized_keys || {
+      echo "$key" >> authorized_keys
+    }
+  done < "$SSH_KEY_FILE"
+  chmod 600 authorized_keys
+}
+
+mount_root() {
+  cryptsetup open -d $ROOT_KEYFILE /dev/vda1 root
+  mount /dev/mapper/root /mnt
+}

install.sh

@@ -11,13 +11,9 @@ if [ -z $1 ]; then
 fi
 
 server="$1"
-scp_server="$1"
-
-echo $1 | grep -F ':' > /dev/null && scp_server="[${1}]"
 
 if ! [ -z $2 ]; then
   server="${2}@${server}"
-  echo $1 | grep -F ':' > /dev/null && scp_server="${2}@${scp_server}"
 fi
 
 if [ -z $3 ]; then
@@ -28,24 +24,20 @@ else
   scp="scp -P $3"
 fi
 
+echo
+echo Starting installation...
+echo
+
 set -e 
 
-# TODO: test if this works
-mkdir -p tmp build
-my_location="$(pwd)"
-cd ../dtrfs_api && cargo build --release || {
-  echo Could not build dtrfs_api
-  exit 1
-}
-cd "$my_location"
-cp ../dtrfs_api/target/release/dtrfs_api ./build/
-tar cf tmp/dtrfs.tar *.sh build/dtrfs_api arch_guest_mods
+mkdir -p tmp
+tar cf tmp/dtrfs.tar *.sh
 $ssh $server rm -rf ${dir}
 $ssh $server mkdir -p ${dir}
-$scp tmp/dtrfs.tar ${scp_server}:${dir}
+$scp tmp/dtrfs.tar ${server}:${dir}
 $ssh $server tar -xf ${dir}/dtrfs.tar -C ${dir}
-$ssh $server GRAB_LOCAL_MODS=YES ${dir}/create.sh
+$ssh $server ${dir}/create.sh
 archive=$($ssh $server cat ${dir}/build/.archive_name)
-$scp ${scp_server}:${dir}/build/${archive} tmp/
+$scp ${server}:${dir}/build/${archive} tmp/
 echo
 echo initrd downloaded to: $(pwd)/tmp/${archive}

scripts/arch_guest_mods

@@ -1,76 +0,0 @@
-aesni_intel
-asn1_encoder
-async_tx
-async_xor
-atkbd
-cbc
-cdrom
-crc16
-crc32c_generic
-crc32c_intel
-crc32_pclmul
-crct10dif_pclmul
-cryptd
-crypto_simd
-dm_bufio
-dm_crypt
-dm-integrity
-dm_integrity
-dm_mod
-efi_secret
-encrypted_keys
-ext4
-failover
-gf128mul
-ghash_clmulni_intel
-i2c_i801
-i2c_mux
-i2c_smbus
-i8042
-intel_agp
-intel_gtt
-intel_pmc_bxt
-intel_rapl_common
-intel_rapl_msr
-ip_tables
-iTCO_vendor_support
-iTCO_wdt
-jbd2
-libps2
-loop
-lpc_ich
-mac_hid
-mbcache
-mousedev
-net_failover
-nfnetlink
-parport
-parport_pc
-pcspkr
-polyval_clmulni
-polyval_generic
-ppdev
-psmouse
-qemu_fw_cfg
-serio
-serio_raw
-sev-guest
-sev_guest
-sha1_ssse3
-sha256
-sha256_ssse3
-sha512_ssse3
-sr_mod
-tee
-trusted
-tsm
-virtio_blk
-virtio_net
-vivaldi_fmap
-vmw_vmci
-vmw_vsock_virtio_transport_common
-vmw_vsock_vmci_transport
-vsock
-vsock_loopback
-xor
-x_tables

scripts/creator_exports.sh

@@ -1,15 +0,0 @@
-#!/bin/bash
-script_dir=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
-
-# root of the initrd, that will be used to create the cpio archive
-[[ -n "$ROOT" ]] ||
-  export ROOT="${script_dir}/build/initrd_root"
-# you need busybox to be able to instsall
-[[ -n "$BUSYBOX_PATH" ]] ||
-  export BUSYBOX_PATH="/usr/lib/initcpio/busybox"
-# choose a kernel if you don't want to use the active one
-[[ -n "$KERNEL" ]] ||
-  export KERNEL="$(uname -r)"
-# this will allow you to grab modules from the machine where the installer is running
-[[ -n "$GRAB_LOCAL_MODS" ]] ||
-  export GRAB_LOCAL_MODS="no"

scripts/init.sh

@@ -1,27 +0,0 @@
-#!/bin/bash
-source /usr/lib/dtrfs/init_functions.sh
-
-install_url="/tmp/detee_install_url"
-install_sha="/tmp/detee_install_sha"
-root_keyfile="/tmp/detee_root_keyfile"
-ssh_key_file="/tmp/detee_ssh_key"
-snp_key_file="/tmp/detee_luks_hotkey"
-
-create_mounts
-load_modules
-setup_network
-
-# load this module again cause it fails the first time
-modprobe sev_guest
-
-create_certs
-dtrfs_api
-
-github_ssh_key
-cp /etc/resolv.conf /mnt/etc/resolv.conf
-
-# copy kernel modules in case the user deleted the old modules
-mkdir -p /mnt/lib/modules/
-cp -rn /lib/modules/* /mnt/lib/modules/
-
-exec switch_root /mnt /sbin/init "$@"

scripts/install_os.sh

@@ -1,60 +0,0 @@
-#!/bin/bash
-
-# This script is called by dtrfs_api to install an OS.
-
-[[ -z "$INSTALL_URL" ]] && {
-  echo "Did not find INSTALL_URL env variable".
-  exit 1
-}
-
-[[ -z "$INSTALL_URL" ]] && {
-  echo "Did not find INSTALL_SHA env variable".
-  exit 2
-}
-
-[[ -f "$ROOT_KEYFILE" ]] || {
-  echo "Did not find keyfile at the following location: $ROOT_KEYFILE"
-  exit 3
-}
-
-# mount root if it exists
-blkid | grep vda1 | grep LUKS && {
-  echo "/dev/vda1 already has a LUKS partition"
-  exit 4
-}
-
-echo === Creating partition /dev/vda1
-(
-  echo n
-  echo p
-  echo 
-  echo 
-  echo 
-  echo w
-) | fdisk /dev/vda
-echo "=== Formatting /dev/vda1 using cryptsetup luksFormat and opening as root"
-cryptsetup luksFormat --batch-mode -d $ROOT_KEYFILE /dev/vda1 || exit 5
-[[ -f "$SNP_KEY_FILE" ]] && {
-  echo "Adding LUKS slot via SNP KDF key found at $SNP_KEY_FILE"
-  cryptsetup luksAddKey \
-    --key-file $ROOT_KEYFILE \
-    --new-keyfile $SNP_KEY_FILE /dev/vda1
-}
-cryptsetup open -d $ROOT_KEYFILE /dev/vda1 root || exit 6
-echo "=== Formatting /dev/mapper/root as ext4 and mounting at /mnt"
-mkfs.ext4 /dev/mapper/root || exit 7
-mount /dev/mapper/root /mnt || exit 8
-echo "=== Downloading OS template from $INSTALL_URL and verifying hash"
-wget -O /mnt/template.fsa "$INSTALL_URL" || {
-  echo "Failed to download $INSTALL_URL"
-  exit 9
-}
-sha256sum /mnt/template.fsa | grep "${INSTALL_SHA}" || exit 1
-echo "=== Installing OS template"
-fsarchiver restdir /mnt/template.fsa /
-rm /mnt/template.fsa
-# TODO: decide for UX if maybe we should allow user to inject fstab
-echo "" > /mnt/etc/fstab
-hostname=$(cat /proc/cmdline | grep -oE 'detee_name=[0-9a-z\_\.\-]+' | cut -d '=' -f2)
-echo "=== Setting up guest hostname as $hostname"
-[[ -n "$hostname" ]] && echo $hostname > /mnt/etc/hostname