bin/create-build-support-package: some progress

1 files changed, 213 insertions, 0 deletions

diff --git a/bin/create-build-support-package b/bin/create-build-support-package
new file mode 100755
index 0000000..1763b41
--- /dev/null
+++ b/bin/create-build-support-package
@@ -0,0 +1,213 @@
+#!/bin/sh
+
+# shellcheck source=../lib/load-configuration
+. "${0%/*}/../lib/load-configuration"
+
+# shellcheck disable=SC2016
+usage() {
+  >&2 echo 'usage:'
+  >&2 echo '  create-build-support-package [options] --from $pkgname-$epoch:$pkgver-$pkgrel.$sub_pkgrel [--] $file1 $file2 $file3 ...'
+  >&2 echo '    create $pkgname-shim containing'
+  >&2 echo '    $file1, $file2, ... from the original package'
+  >&2 echo '  create-build-support-package [options] --shim $pkgfile'
+  >&2 echo '    insert $pkgfile into $repo_arch/build-support/$pkgname-shim'
+  >&2 echo ''
+  >&2 echo 'possible options:'
+  >&2 echo '  -a|--arch $repo_arch: (required)'
+  >&2 echo '    Operate on repository of given architecture.'
+  >&2 echo '  -h|--help:'
+  >&2 echo '    Show this help and exit.'
+  >&2 echo '  -w|--wait:'
+  >&2 echo '    Wait for lock if necessary.'
+  [ -z "$1" ] && exit 1 || exit "$1"
+}
+
+eval set -- "$(
+  getopt -o a:hw \
+    --long arch \
+    --long from \
+    --long help \
+    --long shim \
+    --long wait \
+    -n "$(basename "$0")" -- "$@" || \
+    echo usage
+  )"
+
+repo_arch=''
+shim_package=''
+source_package=''
+wait_for_lock='-n'
+while true; do
+  case "$1" in
+    -a|--arch)
+      if [ -n "${repo_arch}" ]; then
+        >&2 prinf -- '-a|--arch given more than once.\n'
+        usage
+      fi
+      shift
+      repo_arch="$1"
+    ;;
+    --from)
+      if [ -n "${source_package}" ]; then
+        >&2 prinf -- '--from given more than once.\n'
+        usage
+      fi
+      shift
+      source_package="$1"
+    ;;
+    -h|--help)
+      usage 0
+    ;;
+    --shim)
+      if [ -n "${shim_package}" ]; then
+        >&2 prinf -- '--shim given more than once.\n'
+        usage
+      fi
+      shift
+      shim_package="$1"
+    ;;
+    -w|--wait)
+      wait_for_lock=''
+    ;;
+    --)
+      shift
+      break
+    ;;
+    *)
+      >&2 printf 'Whoops, forgot to implement option "%s" internally.\n' \
+        "$1"
+      exit 42
+    ;;
+  esac
+done
+
+if [ -n "${source_package}" ] \
+  && [ -n "${shim_package}" ]; then
+  >&2 echo 'Conflicting parameters: --from and --shim'
+  usage
+fi
+
+exec 9> "${sanity_check_lock_file}"
+verbose_flock -s ${wait_for_lock} 9
+
+tmp_dir=$(mktemp -d 'tmp.create-build-support.XXXXXXXXXX')
+# shellcheck disable=SC2064
+trap "rm -rf --one-file-system '${tmp_dir:?}'" EXIT
+
+if [ -n "${source_package}" ]; then
+  # create shim_package from source_package
+
+  if [ $# -eq 0 ]; then
+    usage 1
+  fi
+
+  pkg=$(
+    # shellcheck disable=SC2016
+    {
+      printf 'SELECT DISTINCT '
+      mysql_package_name_query
+      printf ' FROM `binary_packages`'
+      mysql_join_binary_packages_binary_packages_in_repositories
+      mysql_join_binary_packages_in_repositories_repositories
+      mysql_join_repositories_architectures
+      printf ' WHERE `repositories`.`is_on_master_mirror`'
+      printf ' AND `architectures`.`name`=from_base64("%s")' \
+        "$(
+          printf '%s' "${repo_arch}" \
+            | base64 -w0
+        )"
+      printf ' AND '
+      mysql_package_name_query '' 'XX' \
+        | sed '
+          s/,"-",`XX.*\.pkg\.tar\.xz"//
+        '
+      printf '=from_base64("%s")' \
+        "$(
+          printf '%s' "${source_package}" \
+            | base64 -w0
+        )"
+    } \
+      | mysql_run_query \
+      | tr '\t' ' '
+  )
+
+  if [ -z "${pkg}" ]; then
+    >&2 printf 'Could not find %s/%s in the database.\n' \
+      "${repo_arch}" "${source_package}"
+    exit 1
+  fi
+
+  if printf '%s\n' "${pkg}" \
+    | wc -l \
+    | grep -vqxF '1'; then
+    >&2 printf 'Package %s/%s was found multiple times:\n' \
+      "${repo_arch}" "${source_package}"
+    >&2 printf '%s\n' "${pkg}"
+    exit 1
+  fi
+
+  new_pkg="${pkg%-*-*-*}"
+  new_pkg="${new_pkg}-shim${pkg#${new_pkg}}"
+
+  failsafe_rsync \
+    "${master_mirror_rsync_directory}/pool/${pkg}" \
+    "${tmp_dir}/"
+
+  mkdir "${tmp_dir}/content"
+  bsdtar -C "${tmp_dir}/content" -xf "${tmp_dir}/${pkg}" \
+    '.BUILDINFO' \
+    '.PKGINFO' \
+    "$@"
+
+  # TODO: mangle customizable meta-infos here (new provides, keep some
+  # depends)
+  sed -i '
+    /^pkgname = / s/ \S\+$/\0-shim\nprovides =\0/
+    /^depend = /d
+  ' "${tmp_dir}/content/.PKGINFO"
+
+  # from /usr/bin/makepkg
+  list_package_files() {
+    (
+      cd "${tmp_dir}/content"
+      find . -path './.*' \! -name '.'; find . \! -path './.*' \! -name '.' \
+        | LC_ALL=C sort
+    ) \
+      | sed -e 's|^\./||' \
+      | tr '\n' '\0'
+  }
+
+  list_package_files \
+    | LANG=C bsdtar -C "${tmp_dir}/content" -cnf - --format=mtree \
+      --options='!all,use-set,type,uid,gid,mode,time,size,md5,sha256,link' \
+      --null --files-from - --exclude .MTREE \
+    | gzip -c -f -n \
+    > "${tmp_dir}/content/.MTREE"
+
+  list_package_files \
+    | LANG=C bsdtar -C "${tmp_dir}/content" -cnf - --null --files-from - \
+    | xz -c -z - \
+    > "${tmp_dir}/${new_pkg}"
+
+  rm -rf --one-file-system "${tmp_dir:?}/content"
+  mv "${tmp_dir}/${new_pkg}" "${work_dir}/"
+  >&2 printf 'Please sign %s with a build slave key and run\n' \
+    "${work_dir}/${new_pkg}"
+  # shellcheck disable=SC2016
+  >&2 printf 'create-build-support-package --shim $pkgfile\n'
+
+elif [ -n "${shim_package}" ]; then
+  # insert shim_package into [build-support]
+
+  exec 8> "${package_database_lock_file}"
+  verbose_flock ${wait_for_lock} 8
+
+  # TODO: find original package in database, check signature, retrieve
+  # db, insert package into db, copy row in `binary_packages`, insert
+  # row into `binary_packages_in_repositories`, add package to pool/,
+  # send db
+
+else
+  >&2 echo 'Need either --from or --shim.'
+  usage
+fi