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| #!/bin/bash | |
| set -u | |
| if [ -t 0 ] || [ -n "${C_ENTRYPOINT_DEBUG-}" ]; then | |
| PS4="$0: DEBUG: \$LINENO: " | |
| set -x | |
| fi | |
| sv_usage() { | |
| echo "Usage: $0 <start|exec ...|help>" | |
| } | |
| sv_init() { | |
| local dir | |
| for dir in "$SAMBA_SYSCONF_DIR" "$SAMBA_DATA_DIR" "$SAMBA_CACHE_DIR"; do | |
| backup "$dir" || return $? | |
| rm_in_dir "$dir" || return $? | |
| done | |
| if [ -z "$SAMBA_ADMIN_PASSWORD_SET" ]; then | |
| ## Save generated admin password | |
| mkdir -m 0077 "$SAMBA_SYSCONF_DIR/private" || return $? | |
| echo "$SAMBA_ADMIN_PASSWORD" >"$SAMBA_SYSCONF_DIR/private/admin.password" | |
| fi | |
| if [ -n "$SAMBA_IDMAP_RANGE" ]; then | |
| local range_lower="${SAMBA_IDMAP_RANGE%%[!0-9]*}" | |
| local range_upper="${SAMBA_IDMAP_RANGE##*[!0-9]}" | |
| local idmap_init_ldif="$SAMBA_SETUP_DIR/idmap_init.ldif" | |
| if [ ! -f "$idmap_init_ldif.dist" ]; then | |
| cp -p \ | |
| "$idmap_init_ldif" \ | |
| "$idmap_init_ldif.dist" \ | |
| || return $? \ | |
| ; | |
| { | |
| sed \ | |
| "s/^\(lowerBound:\) .*/\1 $range_lower/" \ | |
| "s/^\(upperBound:\) .*/\1 $range_upper/" \ | |
| "$idmap_init_ldif.dist" \ | |
| ; | |
| echo | |
| cat <<-EOF | |
| dn: CN=S-1-5-32-544 | |
| cn: S-1-5-32-544 | |
| objectClass: sidMap | |
| objectSid: S-1-5-32-544 | |
| type: ID_TYPE_BOTH | |
| xidNumber: $range_lower | |
| distinguishedName: CN=S-1-5-32-544 | |
| EOF | |
| } \ | |
| >"$idmap_init_ldif" \ | |
| ; | |
| fi | |
| fi | |
| samba-tool domain provision \ | |
| --adminpass="$SAMBA_ADMIN_PASSWORD" \ | |
| --server-role="dc" \ | |
| --host-name="$SAMBA_HOSTNAME" \ | |
| --realm="$SAMBA_REALM" \ | |
| --domain="$SAMBA_DOMAIN" \ | |
| --use-rfc2307 \ | |
| --dns-backend="SAMBA_INTERNAL" \ | |
| --option="dns forwarder=$SAMBA_DNS_FORWARDER" \ | |
| ${SAMBA_IDMAP_RANGE:+--option="idmap config *:range = $SAMBA_IDMAP_RANGE"} \ | |
| ${SAMBA_IDMAP_RANGE:+--option="vfs objects = dfs_samba4 acl_xattr xattr_tdb"} \ | |
| || return $? \ | |
| ; | |
| ## FIXME: Remove `vfs objects = ...` | |
| } | |
| sv_start() { | |
| samba --interactive "$@" | |
| } | |
| ## Remove all files in a directory | |
| rm_in_dir() { | |
| local dir="$1"; shift | |
| [ -d "$dir" ] || return 0 | |
| find "$dir/." ! -name . -maxdepth 1 -exec rm -r {} + | |
| } | |
| backup() { | |
| [ -f "$1" ] || return 0 | |
| mkdir -p "$C_BACKUP_DIR" || return $? | |
| local src | |
| for src in "$@"; do | |
| ( | |
| cd / || exit $? | |
| tar -c -f - ".$src" |tar -x -f - -C "$C_BACKUP_DIR" | |
| ) \ | |
| || return $? \ | |
| ; | |
| done | |
| } | |
| env_export() { | |
| export $( | |
| set \ | |
| |sed -n \ | |
| -e 's/^\(C_[_A-Z0-9]*\)=.*/\1/p' \ | |
| -e 's/^\(SAMBA_[_A-Z0-9]*\)=.*/\1/p' \ | |
| ; | |
| ) | |
| } | |
| env_init() { | |
| C_ENTRYPOINT="$0" | |
| C_PREFIX="/srv/container" | |
| C_SYSCONF_DIR="$C_PREFIX/etc" | |
| C_BACKUP_DIR="$C_PREFIX/backup/$(date +%Y%m%d%H%M%S)" | |
| SAMBA_PREFIX="/srv/samba" | |
| SAMBA_SYSCONF_DIR="$SAMBA_PREFIX/etc" | |
| SAMBA_DATA_DIR="$SAMBA_PREFIX/data" | |
| SAMBA_CACHE_DIR="$SAMBA_PREFIX/cache" | |
| SAMBA_SETUP_DIR="/usr/share/samba/setup" | |
| : "${SAMBA_HOSTNAME=$(uname -n |sed 's/\..*//')}" | |
| SAMBA_REALM="$(echo "${SAMBA_REALM-EXAMPLE.LAN}" |tr a-z A-Z)" | |
| SAMBA_DOMAIN="$(echo "${SAMBA_DOMAIN-${SAMBA_REALM%%.*}}" |tr a-z A-Z)" | |
| SAMBA_ADMIN_PASSWORD_SET="${SAMBA_ADMIN_PASSWORD+set}" | |
| ## FIXME: Password must have alphabet in uppercase and lowercase, numeric characters | |
| : "${SAMBA_ADMIN_PASSWORD=Aa0$(tr -dc A-Za-z0-9 </dev/urandom |head -c 12)}" | |
| : "${SAMBA_DNS_FORWARDER=}" | |
| : "${SAMBA_IDMAP_RANGE=}" | |
| } | |
| main() { | |
| env_init | |
| C_ENTRYPOINT_CMD="${1-start}"; ${1+shift} | |
| env_export | |
| for cmd in "$C_SYSCONF_DIR/entrypoint.pre.d/$C_ENTRYPOINT_CMD"/*; do | |
| [ -f "$cmd" -a -x "$cmd" ] || continue | |
| "$cmd" "$@" | |
| env_export | |
| done | |
| case "$C_ENTRYPOINT_CMD" in | |
| init) | |
| sv_init | |
| ;; | |
| start) | |
| if [ ! -s "$SAMBA_DATA_DIR/private/secrets.tdb" ]; then | |
| sv_init || return $? | |
| fi | |
| sv_start "$@" | |
| ;; | |
| exec) | |
| "$@" | |
| ;; | |
| *) | |
| sv_usage "$@" | |
| ;; | |
| esac | |
| rc="$?" | |
| env_export | |
| for cmd in "$C_SYSCONF_DIR/entrypoint.post.d/$C_ENTRYPOINT_CMD"/*; do | |
| [ -f "$cmd" -a -x "$cmd" ] || continue | |
| "$cmd" "$@" | |
| env_export | |
| done | |
| return "$rc" | |
| } | |
| main "$@" | |
| exit "$?" |
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