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Diffstat (limited to '')
| -rwxr-xr-x | debian/slapd.preinst | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/debian/slapd.preinst b/debian/slapd.preinst new file mode 100755 index 0000000..4729c06 --- /dev/null +++ b/debian/slapd.preinst @@ -0,0 +1,126 @@ +#! /bin/sh + +set -e + +. /usr/share/debconf/confmodule + +# This will be replaced with debian/slapd.scripts-common which includes +# various helper functions and $OLD_VERSION and $SLAPD_CONF +#SCRIPTSCOMMON# + +ppolicy_schema_needs_update() { # {{{ +# Provide an LDIF to add the pwdMaxRecordedFailure attribute to the +# ppolicy schema, and recommend the user apply it before continuing with +# the slapd upgrade. + local update_ldif + + update_ldif="$(mktemp --tmpdir ppolicy-schema-update-XXXXXXXX.ldif)" + cat > "$update_ldif" << eof +dn: $1 +changetype: modify +add: olcAttributeTypes +olcAttributeTypes: {16}( 1.3.6.1.4.1.42.2.27.8.1.30 NAME 'pwdMaxRecordedFailure' EQUALITY integerMatch ORDERING integerOrderingMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.27 SINGLE-VALUE ) +- +delete: olcObjectClasses +olcObjectClasses: {1}( 1.3.6.1.4.1.42.2.27.8.2.1 NAME 'pwdPolicy' SUP top AUXILIARY MUST pwdAttribute MAY ( pwdMinAge $ pwdMaxAge $ pwdInHistory $ pwdCheckQuality $ pwdMinLength $ pwdExpireWarning $ pwdGraceAuthNLimit $ pwdLockout $ pwdLockoutDuration $ pwdMaxFailure $ pwdFailureCountInterval $ pwdMustChange $ pwdAllowUserChange $ pwdSafeModify ) ) +- +add: olcObjectClasses +olcObjectClasses: {1}( 1.3.6.1.4.1.42.2.27.8.2.1 NAME 'pwdPolicy' SUP top AUXILIARY MUST pwdAttribute MAY ( pwdMinAge $ pwdMaxAge $ pwdInHistory $ pwdCheckQuality $ pwdMinLength $ pwdExpireWarning $ pwdGraceAuthNLimit $ pwdLockout $ pwdLockoutDuration $ pwdMaxFailure $ pwdFailureCountInterval $ pwdMustChange $ pwdAllowUserChange $ pwdSafeModify $ pwdMaxRecordedFailure ) ) + +eof + + db_subst slapd/ppolicy_schema_needs_update ldif "$update_ldif" + db_fset slapd/ppolicy_schema_needs_update seen false + db_input critical slapd/ppolicy_schema_needs_update || true + db_go || true + db_get slapd/ppolicy_schema_needs_update + if [ "$RET" = 'abort installation' ]; then + db_stop + exit 1 + fi +} +# }}} +check_ppolicy_schema() { # {{{ +# When upgrading to 2.4.43 or later, if the cn=config database contains +# an old version of the ppolicy schema, check that it is safe to upgrade +# it automatically in postinst, or instruct the user to do so before +# upgrading. + local config_ldif="$1" + + # Check whether the schema is loaded and needs an update. + local ppolicy_dn="$(find_old_ppolicy_schema "$config_ldif")" + if [ -z "$ppolicy_dn" ]; then + return + fi + + # If either the config or frontend databases have any overlays + # or syncrepl clients on them, don't assume it's safe to change + # the config offline. + # As well, if a content database is a sync provider, we want to + # recommend that the schema be updated on every server before + # going through with the upgrade. + if grep -q -e '^dn: olcOverlay=.\+,olcDatabase={-1}frontend,cn=config$' -e '^dn: olcOverlay=.\+,olcDatabase={0}config,cn=config$' "$config_ldif" \ + || sed -n '/^dn: olcDatabase={-1}frontend,cn=config$/,// p' "$config_ldif" | grep -q '^olcSyncrepl:' \ + || sed -n '/^dn: olcDatabase={0}config,cn=config$/,//p' "$config_ldif" | grep -q '^olcSyncrepl:' \ + || grep -q '^dn: olcOverlay={[0-9]\+}syncprov,olcDatabase=.\+,cn=config' "$config_ldif"; then + ppolicy_schema_needs_update "$ppolicy_dn" + fi + + # If we made it this far, it should be safe to upgrade the + # schema automatically in postinst. +} +# }}} +preinst_check_config() { # {{{ +# Check whether manual config changes are required before upgrading + if ! previous_version_older '2.4.44+dfsg-1~'; then + # no pre-checks required + return 0 + fi + + if ! [ -d "$SLAPD_CONF" ]; then + # no checks needed for slapd.conf at this time + return 0 + fi + + # If slapd was previously removed and a newer version is being + # installed, the config must have already been dumped during + # remove, or we cannot proceed. + if [ "$MODE" = upgrade ]; then + dump_config + fi + + # Locate the file exported by dump_config. + local dumped_ldif="$(database_dumping_destdir)/cn=config.ldif" + if [ ! -f "$dumped_ldif" ]; then + echo "Expected to find a configuration backup in $dumped_ldif but it is missing. Please retry the upgrade." >&2 + exit 1 + fi + + # Create a working copy with lines unwrapped. + local config_ldif="$(mktemp --tmpdir slapd.XXXXXXXX.ldif)" + trap "trap - INT EXIT; rm -f '$config_ldif'" INT EXIT + normalize_ldif "$dumped_ldif" > "$config_ldif" + + check_ppolicy_schema "$config_ldif" +} +# }}} + +# If we are upgrading from an old version then stop slapd and attempt to +# slapcat out the data so we can use it in postinst to do the upgrade. +# If slapd was removed and is being reinstalled, slapcat is not +# available at this time, so the data should have been dumped before the +# old slapd was removed. + +if [ "$MODE" = upgrade ] || [ "$MODE" = install -a -n "$OLD_VERSION" ]; then + preinst_check_config +fi + +if [ "$MODE" = upgrade ]; then + dump_databases +fi + +#DEBHELPER# + +exit 0 + +# vim: set sw=8 foldmethod=marker: |