generate_image.sh

   1 #!/bin/bash
   2 ###############################################################################
   3 # IPFire.org    - An Open Source Firewall Solution                            #
   4 # Copyright (C) - IPFire Development Team <info@ipfire.org>                   #
   5 ###############################################################################
   6
   7 # Constants
   8
   9 # Proper error codes
  10 EXIT_OK=0
  11 EXIT_ERROR=1
  12 EXIT_CONF_ERROR=2
  13 EXIT_NOT_SUPPORTED=3
  14 EXIT_NOT_HANDLED=4
  15 EXIT_COMMAND_NOT_FOUND=127
  16 EXIT_ERROR_ASSERT=128
  17
  18 EXIT_TRUE=0
  19 EXIT_FALSE=1
  20 EXIT_UNKNOWN=2
  21
  22 # Functions
  23
  24 log() {
  25         local level=${1}
  26         local message=${2}
  27         echo "[${level}] ${message}"
  28 }
  29
  30 cleanup() {
  31         # Unmount image
  32         umount ${IMAGE_MOUNT_DIR}
  33
  34         # Remove partition from the kernel table.
  35         partx -d ${outlo}p1
  36
  37         # Remove loopback device
  38         losetup -d ${outlo}
  39
  40         # Drop working dir
  41         if [ -d "${WORKING_DIR}" ]; then
  42                 rm -dfR "${WORKING_DIR}"
  43         fi
  44 }
  45
  46 generate_image_filename() {
  47         local distro=${1}
  48         local version=${2}
  49         local arch=${3}
  50
  51         echo "${distro}-${version}-${arch}"
  52 }
  53
  54 check_for_pakfire() {
  55         local return_value=0
  56
  57         # TODO
  58         # Check that pakfire-server binary is available
  59         # Check that pakfire binary is available
  60
  61         # Check that repo files are installed. (pakfire need to know which repos exist)
  62         local repo_dir="/etc/pakfire/repos"
  63
  64         if [ ! -d "${repo_dir}" ]; then
  65                 log ERROR "Could not find respository directory ${repo_dir}"
  66                 return_value=1
  67         fi
  68
  69         return ${return_value}
  70 }
  71
  72 compress_image() {
  73         local compression=${1}
  74         local image_file=${2}
  75         local level=${3}
  76
  77         log debug "Compressing ${image_file} with ${compression}"
  78
  79         case "${compression}" in
  80                 "xz")
  81                         # Check that the file does not exist yet
  82                         if [ -f "${image_file}.xz" ]; then
  83                                 log ERROR "Failed to compress the image. The file already exists"
  84                                 return ${EXIT_ERROR}
  85                         fi
  86                         xz "-${level}" "${image_file}"
  87                         ;;
  88                 "zip")
  89                 # Check that the file does not exist yet
  90                         if [ -f "${image_file}.zip" ]; then
  91                                 log ERROR "Failed to compress the image. The file already exists"
  92                                 return ${EXIT_ERROR}
  93
  94                         fi
  95                         zip "-${level}" "${image_file}.zip" "${image_file}"
  96                         # Remove the file which we compressed+
  97                         rm -f "${image_file}"
  98                         ;;
  99
 100         esac
 101 }
 102
 103 reset_root_password() {
 104         local root_dir=${1}
 105         # Backup passwd file
 106         cp -avf ${root_dir}/etc/passwd ${root_dir}/etc/passwd.orig
 107
 108         # Drop root password.
 109         sed -e "s/^\(root:\)[^:]*:/\1:/" ${root_dir}/etc/passwd.orig > ${root_dir}/etc/passwd
 110
 111         # Remove passwd backup file.
 112         rm -rvf ${root_dir}/etc/passwd.orig
 113 }
 114
 115 clone_git_repos() {
 116         # Dir where the repos should be located
 117         local dir=${1}
 118         shift
 119         local repos="$@"
 120
 121         local repo
 122
 123         mkdir -pv ${dir}
 124
 125         (
 126                 cd ${dir}
 127                 # Clone git repositories.
 128                 for repo in ${repos}; do
 129                         git clone ${repo}
 130                 done
 131         )
 132 }
 133
 134 # This function is used to publish the produced images
 135
 136 publish() {
 137         local path=${1}
 138         # The image we created usually a img. file
 139         local image_base_file=${2}
 140
 141         local image_name_final="$(generate_image_filename "${DISTRO}" "${VERSION}" "${ARCH}")"
 142
 143         local image_type
 144         local compression_type
 145
 146         # Do these steps for every image format we like to publish
 147         for image_type in ${IMAGE_TYPES_PUBLISH}; do
 148                 # Get compressioon type
 149                 compression_type="$(get_compression_type ${image_type})"
 150                 # Convert images to the type specified in IMAGE_TYPES_PUBLISH
 151                 convert_image "${image_type}" "${image_base_file}" "${image_name_final}"
 152
 153                 # compress image.
 154                 compress_image "${compression_type}" "${image_name_final}.${image_type}" "1"
 155
 156                 # Move images to this path
 157                 mv -f "${image_name_final}.${image_type}.${compression_type}" ${path}
 158
 159                 # point the latest links to these images
 160                 ln -s -f "${path}/${image_name_final}.${image_type}.${compression_type}" \
 161                         "${path}/$(generate_image_filename "${DISTRO}" "latest" "${ARCH}").${image_type}.${compression_type}"
 162
 163         done
 164
 165 }
 166
 167 convert_image() {
 168         local type=${1}
 169         local from=${2}
 170         local to=${3}
 171
 172         if [[ ${type} = "img" ]]; then
 173                 # We do not need to convert the image here but we need to rename
 174                 mv -f ${from} ${to}.${type}
 175         fi
 176
 177         if [[ ${type} = "qcow2" ]]; then
 178                 local cmd="qemu-img convert -c -O ${type} ${from} ${to}.${type}"
 179         else
 180                 local cmd="qemu-img convert -O ${type} ${from} ${to}.${type}"
 181         fi
 182
 183         log debug "${cmd}"
 184
 185         # Execute the command to convert the image
 186         ${cmd}
 187 }
 188
 189 get_compression_type() {
 190         local image_type=${1}
 191
 192         case "${image_type}" in
 193                 "qcow2" | "img")
 194                         # These types can be used only under Unix so we use xz as compression
 195                         echo "xz"
 196                         ;;
 197                 "vmdk" | "vdi")
 198                         # These types can be also under Windows so we use zip as compression
 199                         echo "zip"
 200                         ;;
 201         esac
 202
 203 }
 204
 205 check_for_free_space() {
 206                 local space=${1}
 207                 local path=${2}
 208
 209                 # Space needs to passed in MB
 210                 # df returns bytes so we multiple by 1024²
 211                 space=$(( ${space} * 1024 * 1024 ))
 212
 213                 if [[ $(df --output=avail ${path} | tail -n 1) -lt ${space} ]]; then
 214                         log error "Not enough free space available under ${path}"
 215                         log error "Free space is $(df -h -B MB --output=avail ${path} | tail -n 1) but we need at least $(( ${space} / 1024 / 1024 ))MB"
 216                         return ${EXIT_ERROR}
 217                 fi
 218 }
 219
 220 #
 221 # General settings
 222 #
 223
 224 ARCH="x86_64"
 225 DISTRO="ipfire3"
 226 VERSION="$(date +"%Y%m%d")"
 227 WORKING_DIR=$(mktemp -d /tmp/ipfire3_image.XXXXXXXX)
 228
 229 log DEBUG "Working dir is ${WORKING_DIR}"
 230
 231 #
 232 # Image
 233 #
 234
 235 IMAGE_TYPE="img"
 236 IMAGE_BASE_FILE="$(mktemp -u ${WORKING_DIR}/image_base_file.XXXXXXX.img)"
 237 IMAGE_SIZE="8100"
 238 IMAGE_MOUNT_DIR="$(mktemp -d ${WORKING_DIR}/image.XXXXXXX)"
 239
 240 IMAGE_TYPES_PUBLISH="qcow2 vmdk vdi img"
 241
 242 # The used filesystem.
 243 FILESYSTEM="xfs"
 244
 245 # Additional packages which should be installed.
 246 PACKAGES="xfsprogs kernel openssh-server wget htop tmux"
 247
 248 # Use git network stack. ( When using the git network stack,
 249 # development tools and git automatically will be installed.)
 250 USE_GIT_NETWORK_STACK="True"
 251
 252 # List of packages which are required to build the network stack.
 253 NETWORK_BUILD_DEPS="autoconf automake docbook-xsl libnl3-devel libxslt systemd-devel"
 254
 255 # Install development tools.
 256 INSTALL_DEV_PACKAGES="False"
 257
 258 # List of development tools which should be installed.
 259 DEVELOPMENT_PACKAGES="make gcc libtool git"
 260
 261
 262 # Git repositories which also should be checked, out.
 263 GIT_REPOS=""
 264
 265 #
 266 # Stuff for the local repo
 267 #
 268
 269 # Use local repository.
 270 USE_LOCAL_REPO="True"
 271
 272 # Source path for the local repo packages.
 273 LOCAL_REPO_SOURCE_PATH="/var/lib/pakfire/local/"
 274
 275 # Path were the local repo is created
 276 LOCAL_REPO_DIR="$(mktemp -d ${WORKING_DIR}/ipfire-repo.XXXXXXX)"
 277
 278 # Config file for the local repo
 279 LOCAL_REPO_FILE="/etc/pakfire/repos/local.repo"
 280
 281
 282 # Check that pakfire is working
 283 check_for_pakfire
 284
 285 if ! check_for_free_space 10000 "${WORKING_DIR}"; then
 286         exit ${EXIT_ERROR}
 287 fi
 288
 289 # Check that the image does not exist yet
 290 if [ -f ${IMAGE_BASE_FILE} ]; then
 291         log ERROR "Image file does already exists"
 292         exit 1
 293 fi
 294
 295 # Check that the local repo file does not exists yet.
 296 # We do not want to override custom user configurations.
 297 if [ -f "${LOCAL_REPO_FILE}" ]; then
 298         log ERROR "Config file ${LOCAL_REPO_FILE} for the local repo does already exists"
 299         exit 1
 300 fi
 301
 302 # cd into working directory
 303 cd ${WORKING_DIR} || exit ${EXIT_ERROR}
 304
 305 #
 306 ## Create the disk image.
 307 #
 308 dd if=/dev/zero of=${IMAGE_BASE_FILE} seek=${IMAGE_SIZE}MB count=1k bs=1
 309
 310 # Setup the loopback device.
 311 outlo=`losetup -f --show ${IMAGE_BASE_FILE}`
 312
 313 log INFO "Create partions and filesystem"
 314
 315 # Create and msdos compatible table on the image.
 316 parted ${outlo} mklabel msdos
 317
 318 # Add a new partition to the image.
 319 parted ${outlo} mkpart primary ${FILESYSTEM} 2048k 100% -a minimal
 320
 321 # Make the primary partition bootable.
 322 parted ${outlo} set 1 boot on
 323
 324 # Notify the kernel about the new partition.
 325 partx -a ${outlo}
 326
 327 #
 328 ## Create the filesystem.
 329 #
 330 mkfs.${FILESYSTEM} ${outlo}p1
 331
 332 #
 333 ## Mount the filesystem.
 334 #
 335
 336 log INFO "Mount partion in ${IMAGE_MOUNT_DIR}"
 337
 338 # Create a temporary mountpoint.
 339 mkdir -p ${IMAGE_MOUNT_DIR}
 340
 341 # Afterwards mount the image.
 342 mount -t ${FILESYSTEM} ${outlo}p1 ${IMAGE_MOUNT_DIR}
 343
 344 #
 345 ## Install IPFire 3.x.
 346 #
 347
 348 # Add grub on x86_64 to the package list.
 349 if [ "${ARCH}" == "x86_64" ] || [ "${ARCH}" == "i686" ]; then
 350         PACKAGES="${PACKAGES} grub"
 351
 352         # Store, that grub is present.
 353         HAVE_GRUB="True"
 354 fi
 355
 356 # Check if the git network stack should be installed.
 357 if [ "${USE_GIT_NETWORK_STACK}" == "True" ]; then
 358         GIT_REPOS="${GIT_REPOS} git://git.ipfire.org/network.git"
 359
 360         # Add build dependencies of network package.
 361         PACKAGES="${PACKAGES} ${NETWORK_BUILD_DEPS}"
 362 fi
 363
 364 # Add develoment packes to the package list, if required.
 365 if [ "${INSTALL_DEV_PACKAGES}" == "True" ] || [ ! -z "${GIT_REPOS}" ]; then
 366         PACKAGES="${PACKAGES} ${DEVELOPMENT_PACKAGES}"
 367 fi
 368
 369 log INFO "Create local respository"
 370
 371
 372 # Check if the local repo should be used.
 373 if [ "${USE_LOCAL_REPO}" == "True" ]; then
 374         # Create local repository.
 375         mkdir -pv "${LOCAL_REPO_DIR}"
 376
 377         # Master repository.
 378         if ! pakfire-server repo create ${LOCAL_REPO_DIR} ${LOCAL_REPO_SOURCE_PATH}; then
 379                 log ERROR "Failed to create a local respository"
 380                 cleanup
 381                 exit 1
 382         fi
 383
 384         # Create temporary pakfire repo file.
 385         echo "[repo:local]" >> "${LOCAL_REPO_FILE}"
 386         echo "description = Local repository." >>  "${LOCAL_REPO_FILE}"
 387         echo "enabled = 0" >>  "${LOCAL_REPO_FILE}"
 388         echo "baseurl = ${LOCAL_REPO_DIR}" >>  "${LOCAL_REPO_FILE}"
 389
 390         ENABLE_LOCAL="--enable-repo=local"
 391 fi
 392
 393 # Install IPFire 3.x in the created image.
 394 yes | pakfire --root=${IMAGE_MOUNT_DIR} ${ENABLE_LOCAL} install @Base ${PACKAGES}
 395
 396 #
 397 # Enable serial console
 398 #
 399
 400
 401 #echo "GRUB_TERMINAL=\"serial console\"" >> "${IMAGE_MOUNT_DIR}/etc/default/grub"
 402 #echo "GRUB_SERIAL_COMMAND=\"serial --unit=0 --speed=115200\"" >> "${IMAGE_MOUNT_DIR}/etc/default/grub"
 403
 404 #Hack to install a /etc/default/grub file
 405
 406 cp -f grub "${IMAGE_MOUNT_DIR}/etc/default"
 407
 408 #
 409 ## Install grub2 if neccessary
 410 #
 411 if [ "${HAVE_GRUB}" == "True" ]; then
 412         grub2-install --boot-directory=${IMAGE_MOUNT_DIR}/boot/ --modules="${FILESYSTEM} part_msdos" ${outlo}
 413 fi
 414
 415 #
 416 ## Generate fstab
 417 #
 418
 419 # Gather the uuid of the partition.
 420 FS_UUID=$(blkid -o value -s UUID ${outlo}p1)
 421
 422 # Write fstab.
 423 echo "UUID=${FS_UUID} / ${FILESYSTEM} defaults 0 0" > ${IMAGE_MOUNT_DIR}/etc/fstab
 424
 425 #
 426 ## Remove the password for user root.
 427 #
 428
 429 reset_root_password "${IMAGE_MOUNT_DIR}"
 430
 431 #
 432 ## Setup git repositories.
 433 #
 434
 435 clone_git_repos "${IMAGE_MOUNT_DIR}/build" ${GIT_REPOS}
 436
 437 #
 438 ## Prepare chrooting into the image.
 439 #
 440
 441 # Check if the network stack should be build.
 442 if [ "${USE_GIT_NETWORK_STACK}" == "True" ]; then
 443         BUILD_NETWORK_CMDS="cd network/ && ./autogen.sh && ./configure && make && make install"
 444 fi
 445
 446 ENABLE_GETTY="/bin/systemctl enable getty@.service"
 447
 448 # Check if the arch uses grub
 449 if [ "${HAVE_GRUB}" == "True" ]; then
 450         GENERATE_GRUB_CONF="grub-mkconfig -o /boot/grub2/grub.cfg"
 451 fi
 452
 453 # Use systemd-nspawn to spawn a chroot environment and execute
 454 # commands inside it.
 455 #
 456 # The first command enables the terminal on TTY1.
 457 # The second command generates the configuration file for grub2.
 458
 459
 460 systemd-nspawn -D ${IMAGE_MOUNT_DIR} --bind /dev --capability=CAP_SYS_ADMIN,CAP_SYS_RAWIO --bind /proc --bind /sys << END
 461         echo "Execute commands inside chroot"
 462         ${ENABLE_GETTY}
 463         ${GENERATE_GRUB_CONF}
 464         cd /git-repos/ && ls
 465         ${BUILD_NETWORK_CMDS}
 466         echo "All commands executed"
 467 END
 468
 469
 470
 471 # Insert the UUID because grub-mkconfig often fails to
 472 # detect that correctly
 473
 474 sed -i "${IMAGE_MOUNT_DIR}/boot/grub2/grub.cfg" \
 475                 -e "s/root=[A-Za-z0-9\/=-]*/root=UUID=${FS_UUID}/g"
 476
 477 cat "${IMAGE_MOUNT_DIR}/boot/grub2/grub.cfg"
 478 #
 479 ## Tidy up.
 480 #
 481
 482 # Wait a second.
 483 sleep 5
 484
 485 # Check filesystem for damage.
 486 fsck.${FILESYSTEM} ${outlo}p1
 487
 488 # Cleanup
 489 cleanup
 490
 491 publish "/home/jschlag/public/ipfire3-images" "${IMAGE_BASE_FILE}"
 492
 493 #compress_image "xz" "${IMAGE_BASE_FILE}"