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# -*- mode: sh -*- ### ### common shell include for dbconfig-common aware packages. ### # usage: /usr/share/dbconfig-common/dpkg/common $package $dpkg_argv # (where $dpkg_argv is $@ as passed to the maintainer scripts) #set -x # get some internal helper functions, like _dbc_sanity_check . /usr/share/dbconfig-common/internal/common dbc_config(){ _dbc_debug "dbc_config() $@" ### ### some global variables ### dbc_share="/usr/share/dbconfig-common" dbc_package="$1" dbc_basepackage=$(echo $dbc_package | cut -d_ -f1) dbc_command="$2" dbc_oldversion="$3" if ! _dbc_sanity_check package command; then dbc_install_error "determining package or command" || return $? [ "$dbc_tried_again" ] && return 0 fi dbc_confdir="/etc/dbconfig-common" dbc_globalconfig="$dbc_confdir/config" dbc_packageconfig="$dbc_confdir/$dbc_package.conf" ### ### some internal variables ### # templates common to all database types dbc_standard_templates="database-type dbconfig-install dbconfig-upgrade dbconfig-remove dbconfig-reinstall password-confirm app-password-confirm purge upgrade-backup passwords-do-not-match install-error upgrade-error remove-error internal/reconfiguring internal/skip-preseed missing-db-package-error" # templates common to mysql database types dbc_mysql_templates="mysql/authplugin mysql/method remote/host remote/newhost mysql/app-pass mysql/admin-user mysql/admin-pass remote/port db/dbname db/app-user" # templates common to postgresql database types dbc_pgsql_templates="pgsql/method remote/host remote/newhost pgsql/app-pass pgsql/admin-user pgsql/admin-pass remote/port pgsql/authmethod-admin pgsql/authmethod-user pgsql/changeconf pgsql/manualconf db/dbname db/app-user pgsql/no-empty-passwords" # templates common to sqlite database types dbc_sqlite_templates="db/dbname db/basepath" # database types supporting authenticated access dbc_authenticated_dbtypes="mysql pgsql" # database types supporting remote access dbc_remote_dbtypes="mysql pgsql" # database types storing files on the filesystem dbc_fs_dbtypes="sqlite sqlite3" ### ### source the pre-existing config, if it exists ### if [ -f $dbc_globalconfig ]; then . $dbc_globalconfig fi ### ### Allow priorities to be flexible ### if [ ! "$dbc_prio_low" ] ; then dbc_prio_low="low" fi if [ ! "$dbc_prio_medium" ] ; then dbc_prio_medium="medium" fi if [ ! "$dbc_prio_high" ] ; then dbc_prio_high="high" fi if [ ! "$dbc_prio_critical" ] ; then dbc_prio_critical="critical" fi # set the priority of "remote database" related questions for # the database types that support it if [ "$dbc_remote_questions_default" = "true" ]; then dbc_remote_questions_priority=$dbc_prio_high dbc_default_pgsql_authmethod_admin="password" else dbc_remote_questions_priority=$dbc_prio_low dbc_default_pgsql_authmethod_admin="ident" fi dbc_set_dbtype_defaults $dbc_dbtype } dbc_set_dbtype_defaults(){ local happy supported_dbtypes comma _dbc_debug "dbc_set_dbtype_defaults() $@" # if dbtype isn't set, but dbc_hardcoded_dbtype is set, set dbtype to that if [ "$dbc_hardcoded_dbtype" ]; then dbc_dbtype="$dbc_hardcoded_dbtype" fi # If dbc_dbtypes only has one installed client, set dbtype to that. While # we are at it let's also update dbc_dbtypes with only those dbtypes that # are both supported and installed. if [ "$dbc_dbtypes" ] ; then # This code was originally in dpgk/config supported_dbtypes=$(echo $dbc_dbtypes | sed 's/,/ /g') dbc_dbtypes="" comma="" # Prevent comma before first field for db in $supported_dbtypes ; do if dbc_detect_installed_dbtype $db; then if [ ! "$happy" ] ; then dbc_default_dbtype=$db fi dbc_dbtypes="$dbc_dbtypes$comma$db" comma=", " happy="yes" fi done # If we are not happy I am pretty sure there is a bug in the calling # package. if [ ! "$happy" ] ; then dbc_error="Multiple database support detected, but apparently missing Depends on relevant dbconfig-<databasetype> packages. Please report this issue to the package maintainer." dbc_install_error "analyzing supported database types" || return $? [ "$dbc_tried_again" ] && return 0 fi # Only one installed supported dbtype found, let's use it. if ! echo "$dbc_dbtypes" | grep -q "," ; then dbc_dbtype=$dbc_default_dbtype fi fi ### ### dbtype-specific variable section ### dbc_default_basepath="" # now set some variables based on the dbtype dbc_db_installed_cmd="dbc_${dbc_dbtype}_db_installed" case $dbc_dbtype in mysql) . /usr/share/dbconfig-common/internal/mysql dbc_createuser_cmd='dbc_mysql_createuser' dbc_checkuser_cmd='dbc_mysql_check_user' dbc_createdb_cmd='dbc_mysql_createdb' dbc_dropdb_cmd='dbc_mysql_dropdb' dbc_dropuser_cmd='dbc_mysql_dropuser' dbc_sqlexec_cmd='dbc_mysql_exec_command' dbc_sqlfile_cmd='dbc_mysql_exec_file' dbc_dump_cmd='dbc_mysql_dump' dbc_register_templates="$dbc_standard_templates $dbc_mysql_templates" dbc_default_admin="root" dbc_default_dbuser=$(echo $dbc_package | tr -d +. | cut -c -16); dbc_default_port="3306" dbc_dbvendor="MySQL" dbc_dbpackage="mysql-server" dbc_dbclientpackage="mysql-client" ;; pgsql) . /usr/share/dbconfig-common/internal/pgsql dbc_createuser_cmd='dbc_pgsql_createuser' dbc_checkuser_cmd='dbc_pgsql_check_user' dbc_createdb_cmd='dbc_pgsql_createdb' dbc_dropdb_cmd='dbc_pgsql_dropdb' dbc_dropuser_cmd='dbc_pgsql_dropuser' dbc_sqlexec_cmd='dbc_pgsql_exec_command' dbc_sqlfile_cmd='dbc_pgsql_exec_file' dbc_dump_cmd='dbc_pgsql_dump' dbc_register_templates="$dbc_standard_templates $dbc_pgsql_templates" dbc_default_admin="postgres" dbc_default_dbuser=$(echo $dbc_package | tr -d +-.); dbc_use_dbuser="false" dbc_dbvendor="PostgreSQL" dbc_dbpackage="postgresql" dbc_dbclientpackage="postgresql-client" ;; sqlite|sqlite3) . /usr/share/dbconfig-common/internal/sqlite dbc_createuser_cmd=true dbc_checkuser_cmd=false dbc_createdb_cmd='dbc_sqlite_createdb' dbc_dropdb_cmd='dbc_sqlite_dropdb' dbc_dropuser_cmd=true dbc_sqlexec_cmd='dbc_sqlite_exec_command' dbc_sqlfile_cmd='dbc_sqlite_exec_file' dbc_dump_cmd='dbc_sqlite_dump' dbc_register_templates="$dbc_standard_templates $dbc_sqlite_templates" dbc_default_admin="" dbc_default_dbuser=""; dbc_default_basepath="/var/lib/dbconfig-common/$dbc_dbtype/$dbc_package" dbc_use_dbuser="false" dbc_dbvendor="SQLite" dbc_sqlite_cmd="/usr/bin/$dbc_dbtype" dbc_dbpackage="$dbc_dbtype" dbc_dbclientpackage="$dbc_dbtype" ;; *) dbc_register_templates="$dbc_standard_templates $dbc_mysql_templates $dbc_pgsql_templates $dbc_sqlite_templates" ;; esac # but if this is a frontend-only app, reset some of the above to noops if [ "$dbc_frontend" ]; then dbc_createuser_cmd=true dbc_checkuser_cmd=false dbc_createdb_cmd=true dbc_dropdb_cmd=true dbc_dropuser_cmd=true dbc_sqlexec_cmd=true dbc_sqlfile_cmd=true dbc_dump_cmd=true fi } ### ### functions ### ### ### dump global configuration to a config file ### dbc_write_global_config(){ local tfile _dbc_debug "dbc_write_global_config() $@" tfile=$(dbc_mktemp) cat << EOF > "$tfile" # dbconfig-common system-wide configuration options # dbc_remember_admin_pass: should we cache administrative passwords? # set to "true" to keep admin passwords cached in debconf dbc_remember_admin_pass='$dbc_remember_admin_pass' # dbc_remote_questions_default: will we be likely to install on remote servers? # set to "true" to raise the priority of debconf questions related to # database installation on remote servers (for database types that support this) dbc_remote_questions_default='$dbc_remote_questions_default' EOF ucf --debconf-ok "$tfile" "$dbc_globalconfig" ucfr dbconfig-common "$dbc_globalconfig" rm -f "$tfile" } dbc_read_package_config(){ local _tmp_dbuser _tmp_basepath _tmp_dbname _dbc_debug "dbc_read_package_config() $@" _dbc_sanity_check package packageconfig || dbc_install_error || return $? [ "$dbc_tried_again" ] && return 0 # first we set some defaults, which will be overridden by the config # This is the crucial place where things can go wrong when preseeding # on first install because dbc_install will just be set to true. Just # a note, preseeding on further reinstall/reconfigure doesn't make # sense, just edit the configuration files appropriately. # See bug 476946 dbc_install=true dbc_upgrade=true if [ -f $dbc_packageconfig ]; then . $dbc_packageconfig else # If we are here, there was no previous dbc configuration file # found so I think we can trust debconf # Turns out we cannot fully... According to the documentation # package maintainers can provide several variables in their config. if [ "$dbc_dbuser" ] ; then _tmp_dbuser="$dbc_dbuser" ; fi if [ "$dbc_basepath" ] ; then _tmp_basepath="$dbc_basepath" ; fi if [ "$dbc_dbname" ] ; then _tmp_dbname="$dbc_dbname" ; fi dbc_read_package_debconf if [ ! "$dbc_dbuser" ] ; then dbc_dbuser="$_tmp_dbuser" ; fi if [ ! "$dbc_basepath" ] ; then dbc_basepath="$_tmp_basepath" ; fi if [ ! "$dbc_dbname" ] ; then dbc_dbname="$_tmp_dbname" ; fi # But let's just make sure we don't alter the debconf state, e.g. # for preseeded values that haven't been properly identified # No, we shouldn't as then the above values will not be preseeded #db_set $dbc_package/internal/skip-preseed true fi # This probably should go into dbc_read_package_debconf. if [ ! "$dbc_dballow" ] ; then # Fallback in case the dbc_dballow isn't determined yet # if dbserver is unset, that means localhost. if [ -z "$dbc_dbserver" ] || [ "$dbc_dbserver" = "localhost" ]; then # if the server is local, only allow connections from localhost dbc_dballow="localhost" else # otherwise, only tell the remote database to allow from us dbc_dballow=$(hostname -f) fi fi } ### ### this function is responsible for setting all debconf values based ### on the contents of on-system config files, so that we can avoid ### the "Debconf is Not a Registry" dilemma. ### dbc_preseed_package_debconf(){ local skip_preseed tmp_dbtypes _dbc_debug "dbc_preseed_package_debconf() $@" _dbc_sanity_check package || dbc_install_error || return $? [ "$dbc_tried_again" ] && return 0 # if we've pre-configured the package and are running config # for the second time via dpkg, then there is no on-disk # configuration to preseed with, and we would in fact nuke # the previous answers. so we check to avoid that. db_get $dbc_package/internal/skip-preseed && skip_preseed="$RET" db_reset $dbc_package/internal/skip-preseed if [ "$skip_preseed" = "true" ]; then dbc_read_package_debconf return 0 fi # set whether they want our help db_set $dbc_package/dbconfig-install "$dbc_install" db_set $dbc_package/dbconfig-upgrade "$dbc_upgrade" db_set $dbc_package/dbconfig-remove "$dbc_remove" # set the dbtype db_set $dbc_package/database-type "$dbc_dbtype" # the following db-specific settings always need to be preseeded unless # we specifically know we're not configuring for the given database type # # set the psql authentication method if [ -z "$dbc_dbtype" ] || [ "$dbc_dbtype" = "pgsql" ]; then if [ "$dbc_authmethod_admin" ]; then db_set $dbc_package/pgsql/authmethod-admin "$dbc_authmethod_admin" elif [ "$dbc_default_pgsql_authmethod_admin" ]; then db_set $dbc_package/pgsql/authmethod-admin "$dbc_default_pgsql_authmethod_admin" fi if [ "$dbc_authmethod_user" ]; then db_set $dbc_package/pgsql/authmethod-user "$dbc_authmethod_user" fi fi # for authenticated-only dbtypes. also catches empty (multidb) type. if echo "$dbc_authenticated_dbtypes" | grep -q "$dbc_dbtype"; then # set app user if [ "$dbc_dbuser" ]; then db_set $dbc_package/db/app-user "$dbc_dbuser""@""$dbc_dballow" fi # In case dbc_dbtype is empty, we need to loop over all # authenticated_dbtypes. See LP: #252882 if [ -z "$dbc_dbtype" ]; then tmp_dbtypes="$dbc_authenticated_dbtypes" else tmp_dbtypes="$dbc_dbtype" fi for tmp_dbtype in $tmp_dbtypes ; do # set the app user password if [ "$dbc_dbpass" ]; then db_set $dbc_package/$tmp_dbtype/app-pass "$dbc_dbpass" fi # set the database administrator name if [ "$dbc_dbadmin" ]; then db_set $dbc_package/$tmp_dbtype/admin-user "$dbc_dbadmin" fi done fi # for remote-capable dbtypes if echo "$dbc_remote_dbtypes" | grep -q "$dbc_dbtype"; then # set the remote server/port if [ "$dbc_dbserver" ]; then db_set $dbc_package/remote/host "$dbc_dbserver" fi if [ "$dbc_dbport" ]; then db_set $dbc_package/remote/port "$dbc_dbport" fi fi # for fs-based dbtypes only (sqlite) if echo "$dbc_fs_dbtypes" | grep -qa "$dbc_dbtype"; then # set the directory that the database file is found in if [ "$dbc_basepath" ]; then db_set $dbc_package/db/basepath "$dbc_basepath" fi fi # set the name of the database to be created if [ "$dbc_dbname" ]; then db_set $dbc_package/db/dbname "$dbc_dbname" fi case $dbc_dbtype in "pgsql") # peer/ident based auth doesn't need a password if [ "$dbc_authmethod_admin" != "ident" ]; then # set the database administrator pass db_set $dbc_package/pgsql/admin-pass "$dbc_dbadmpass" fi if [ "$dbc_authmethod_user" != "ident" ]; then # set the database user pass db_set $dbc_package/pgsql/app-pass "$dbc_dbpass" fi # set whether or not they want to force SSL if [ "$dbc_ssl" = "true" ]; then db_set $dbc_package/pgsql/method "TCP/IP + SSL" fi ;; esac } ### ### this function is responsible for reading in everything ### with respect to the package's configuration and dbconfig-common. ### dbc_read_package_debconf(){ local tmp_dballow _dbc_debug "dbc_read_package_debconf() $@" _dbc_sanity_check package || dbc_install_error || return $? [ "$dbc_tried_again" ] && return 0 # gracefully fetch this to support multi-dbtype packages # During initial installation dbc_dbtype may be empty after # this step if this is not preseeded. if [ ! "$dbc_hardcoded_dbtype" ]; then db_get $dbc_package/database-type && dbc_dbtype="$RET" fi # dbconfig needs to be reloaded at this point for multi-dbtype apps dbc_set_dbtype_defaults $dbc_dbtype # get whether they want our help with various stuff db_get $dbc_package/dbconfig-install && dbc_install="$RET" db_get $dbc_package/dbconfig-upgrade && dbc_upgrade="$RET" db_get $dbc_package/dbconfig-remove && dbc_remove="$RET" # If dbc_dbtype is not preseeded for multi-dbtype packages, we # assume that also the other db specific templates are not # preseeded. So, if dbc_dbtype is still empty here, we are going # to skip the items that depend on the dbtype. Note that the other # items are processed. if echo "$dbc_authenticated_dbtypes" | grep -q "$dbc_dbtype"; then # get app user; since dbc 1.8.50 we allow the admin to provide # the domain for the grant call. Unfortunately at least MySQL allows # the app-user to contain an at, so we need to be careful. db_get $dbc_package/db/app-user dbc_dbuser=$(echo "$RET" | sed 's/\(.*\)@\([^@]*\)/\1/') tmp_dballow=$(echo "$RET" | sed -e 's/^[^@]*$//' -e 's/.*@\([^@]*\)/\1/') if [ $tmp_dballow ] ; then dbc_dballow=$tmp_dballow fi if [ "$dbc_dbtype" ] ; then # get the app user password db_get $dbc_package/$dbc_dbtype/app-pass && dbc_dbpass="$RET" # get the database administrator name db_get $dbc_package/$dbc_dbtype/admin-user && dbc_dbadmin="$RET" # get the database administrator pass db_get $dbc_package/$dbc_dbtype/admin-pass && dbc_dbadmpass="$RET" fi fi if echo "$dbc_remote_dbtypes" | grep -q "$dbc_dbtype"; then # get the db server/port db_get $dbc_package/remote/host && dbc_dbserver="$RET" db_get $dbc_package/remote/port && dbc_dbport="$RET" # MySQL 5.7 doesn't support empty port anymore. Instead fill in the # default if no port was given or found. For other dbs, this may be # empty, effectively doing nothing here. if [ ! "$dbc_dbport" ] ; then dbc_dbport="$dbc_default_port" fi fi if echo "$dbc_fs_dbtypes" | grep -qa "$dbc_dbtype"; then # get the directory that the database file is found in db_get $dbc_package/db/basepath && dbc_basepath="$RET" fi # get the name of the database to be created db_get $dbc_package/db/dbname && dbc_dbname="$RET" # DEBIAN_FRONTEND=readline doesn't use our "preseeded" default (LP #689327) # similar code in dpkg/config but also checking for _tmp_dbname here to # prevent overwriting potential preseeded values of dbc_dbname if [ -z "$dbc_dbname" ] && [ -z "$_tmp_dbname" ]; then dbc_dbname=$(echo $dbc_package | tr -d +-.); fi # a few db-specific things case $dbc_dbtype in "pgsql") # get the psql authentication method db_get $dbc_package/pgsql/authmethod-admin && dbc_authmethod_admin="$RET" db_get $dbc_package/pgsql/authmethod-user && dbc_authmethod_user="$RET" # get whether or not they want to force SSL db_get $dbc_package/pgsql/method && dbc_method="$RET" if [ "$dbc_method" = "TCP/IP + SSL" ]; then dbc_ssl="true" fi ;; "mysql") # if the dbconfig-common consumer specifies a mysql authentication # plugin to be used, all users created through dbconfig-common, for # that consumer, will use the given authentication plugin. if [ ! "$dbc_authplugin" ]; then db_get $dbc_package/mysql/authplugin && dbc_authplugin="$RET" fi ;; esac if [ "$dbc_debug" ]; then _dbc_debug "settings determined from dbc_read_package_debconf:" _dbc_debug "\tdbc_install=$dbc_install" _dbc_debug "\tdbc_upgrade=$dbc_upgrade" _dbc_debug "\tdbc_remove=$dbc_remove" _dbc_debug "\tdbc_dbtype=$dbc_dbtype" _dbc_debug "\tdbc_dbuser=$dbc_dbuser" _dbc_debug "\tdbc_dbpass=$dbc_dbpass" _dbc_debug "\tdbc_dballow=$dbc_dballow" _dbc_debug "\tdbc_dbadmin=$dbc_dbadmin" _dbc_debug "\tdbc_dbadmpass=$dbc_dbadmpass" _dbc_debug "\tdbc_dbserver=$dbc_dbserver" _dbc_debug "\tdbc_dbport=$dbc_dbport" _dbc_debug "\tdbc_dbname=$dbc_dbname" _dbc_debug "\tdbc_authmethod_admin=$dbc_authmethod_admin" _dbc_debug "\tdbc_authmethod_user=$dbc_authmethod_user" _dbc_debug "\tdbc_ssl=$dbc_ssl" fi } ### ### dump package configuration to a config file ### dbc_write_package_config(){ local iformat ofile tfile _dbc_debug "dbc_write_package_config() $@" _dbc_sanity_check packageconfig || dbc_install_error || return $? [ "$dbc_tried_again" ] && return 0 echo "dbconfig-common: writing config to $dbc_packageconfig" >&2 tfile=$(dbc_mktemp dbconfig-package-config.XXXXXX) # a quick check if this is a multi-dbtype app if [ "$dbc_hardcoded_dbtype" ]; then dbc_dbtype="$dbc_hardcoded_dbtype" fi # and a check for ssl if [ "$dbc_method" = "TCP/IP + SSL" ]; then dbc_ssl="true" fi cat << EOF > $tfile # automatically generated by the maintainer scripts of $dbc_package # any changes you make will be preserved, though your comments # will be lost! to change your settings you should edit this # file and then run "dpkg-reconfigure $dbc_package" # dbc_install: configure database with dbconfig-common? # set to anything but "true" to opt out of assistance dbc_install='$(dbc_sq_escape $dbc_install)' # dbc_upgrade: upgrade database with dbconfig-common? # set to anything but "true" to opt out of assistance dbc_upgrade='$(dbc_sq_escape $dbc_upgrade)' # dbc_remove: deconfigure database with dbconfig-common? # set to anything but "true" to opt out of assistance dbc_remove='$(dbc_sq_escape $dbc_remove)' # dbc_dbtype: type of underlying database to use # this exists primarily to let dbconfig-common know what database # type to use when a package supports multiple database types. # don't change this value unless you know for certain that this # package supports multiple database types dbc_dbtype='$(dbc_sq_escape $dbc_dbtype)' # dbc_dbuser: database user # the name of the user who we will use to connect to the database. dbc_dbuser='$(dbc_sq_escape $dbc_dbuser)' # dbc_dbpass: database user password # the password to use with the above username when connecting # to a database, if one is required dbc_dbpass='$(dbc_sq_escape $dbc_dbpass)' # dbc_dballow: allowed host to connect from # only for database types that support specifying the host from # which the database user is allowed to connect from # this string defines for which host the dbc_dbuser is allowed # to connect # this value is only really used again when you reconfigure the # package dbc_dballow='$(dbc_sq_escape $dbc_dballow)' # dbc_dbserver: database host. # leave unset to use localhost (or a more efficient local method # if it exists). dbc_dbserver='$(dbc_sq_escape $dbc_dbserver)' # dbc_dbport: remote database port # leave unset to use the default. only applicable if you are # using a remote database. dbc_dbport='$(dbc_sq_escape $dbc_dbport)' # dbc_dbname: name of database # this is the name of your application's database. dbc_dbname='$(dbc_sq_escape $dbc_dbname)' # dbc_dbadmin: name of the administrative user # this is the administrative user that is used to create all of the above # The exception is the MySQL/MariaDB localhost case, where this value is # ignored and instead is determined from /etc/mysql/debian.cnf. dbc_dbadmin='$(dbc_sq_escape $dbc_dbadmin)' # dbc_basepath: base directory to hold database files # leave unset to use the default. only applicable if you are # using a local (filesystem based) database. dbc_basepath='$(dbc_sq_escape $dbc_basepath)' ## ## postgresql specific settings. if you don't use postgresql, ## you can safely ignore all of these ## # dbc_ssl: should we require ssl? # set to "true" to require that connections use ssl dbc_ssl='$(dbc_sq_escape $dbc_ssl)' # dbc_authmethod_admin: authentication method for admin # dbc_authmethod_user: authentication method for dbuser # see the section titled "AUTHENTICATION METHODS" in # /usr/share/doc/dbconfig-common/README.pgsql for more info dbc_authmethod_admin='$(dbc_sq_escape $dbc_authmethod_admin)' dbc_authmethod_user='$(dbc_sq_escape $dbc_authmethod_user)' ## ## end postgresql specific settings ## EOF # apps registered via webapps-common might use nested directories, so # we should make sure the directories exist mkdir -p "$(dirname "$dbc_packageconfig")" ucf --debconf-ok "$tfile" "$dbc_packageconfig" ucfr "$dbc_package" "$dbc_packageconfig" rm -f "$tfile" # generate the requested d-g-i config files unless it's a manual install # and we've been explicitly told to avoid doing this if [ "$dbc_install" != "true" ] && [ "$dbc_dgi_on_manual" != "true" ]; then return 0 elif [ "$dbc_generate_include" ]; then if echo $dbc_generate_include | grep -q -E "^[^:]*:"; then iformat=$(echo $dbc_generate_include | cut -d: -f1) ofile=$(echo $dbc_generate_include | cut -d: -f2) # Changing the owner and perms should only be done during installation, # as administrator changes to configuration files must be respected. # Therefor, only processing owner and perms items when the target # file does not exist. This also works correctly when the configuration # file is removed alltogether, as ucf won't create the file. # This change can be done with all the Oct 2014 usage of dbconfig-common # (Checked with http://codesearch.debian.net), as long as no package # starts asking for the ownership or permissions and expects it to be # changed. # See BTS: #720517 if [ ! -e "$ofile" ]; then if [ "$dbc_generate_include_owner" ]; then dbc_generate_include_args="$dbc_generate_include_args -O $dbc_generate_include_owner" fi if [ "$dbc_generate_include_perms" ]; then dbc_generate_include_args="$dbc_generate_include_args -m $dbc_generate_include_perms" fi fi dbconfig-generate-include -a -f "$iformat" $dbc_generate_include_args -U "$dbc_packageconfig" "$ofile" ucfr "$dbc_package" "$dbc_packageconfig" else dbc_error="maintainer did not properly set dbc_generate_include" dbc_install_error "writing package config" || return $? [ "$dbc_tried_again" ] && return 0 fi fi } dbc_abort(){ # forget that we've seen all the debconf questions for f in $dbc_register_templates; do db_fset $dbc_package/$f seen false done echo "dbconfig-common: $dbc_package $dbc_command: aborted." >&2 dbc_postinst_cleanup return 1 } ## ## what to do if mysql-server etc are not installed ## dbc_missing_db_package_error(){ local question echo "warning: database package not installed?" >&2 question="$dbc_package/missing-db-package-error" db_subst $question dbpackage $1 dbc_retry_after_error=missing_db_package _dbc_recover_error || return $? } ## ## what to do when something goes wrong during install ## dbc_install_error(){ local question echo "error encountered $1:" >&2 echo $dbc_error >&2 question="$dbc_package/install-error" db_subst $question error $dbc_error dbc_retry_after_error=install _dbc_recover_error || return $? } ## ## what to do when something goes wrong during upgrade ## dbc_upgrade_error(){ local question echo "error encountered $1:" >&2 echo $dbc_error >&2 question="$dbc_package/upgrade-error" db_subst $question error $dbc_error db_subst $question dbfile $dbc_dumpfile dbc_retry_after_error=upgrade _dbc_recover_error || return $? } ## ## what to do when something goes wrong during remove ## dbc_remove_error(){ local question echo "error encountered $1:" >&2 echo $dbc_error >&2 question="$dbc_package/remove-error" db_subst $question error $dbc_error dbc_retry_after_error=remove _dbc_recover_error || return $? } # # Generic code called by dbc_*_error # _dbc_recover_error(){ local _debian_frontend if [ "$_dbc_no_act" ]; then return 0; fi # Several actions set _dbc_asuser before calling the functions that can # cause the error to occur, so we need to make sure it is unset to start # with for the retry options. if [ "${_dbc_asuser:-}" ] ; then _dbc_asuser="" fi db_fset $question seen false db_input $dbc_prio_critical $question || true db_go || true db_get $question _dbc_on_error_option="$RET" if [ "$dbc_retry_after_error" != "upgrade" ] ; then # It seems $DEBIAN_FRONTEND is sometimes spelled Noninteractive # see LP: #1406700 _debian_frontend="$(echo ${DEBIAN_FRONTEND:-} | tr '[:upper:]' '[:lower:]')" if [ "$_debian_frontend" = "noninteractive" ]; then echo "dbconfig-common: $dbc_package $dbc_command: noninteractive fail." >&2 _dbc_on_error_option="ignore" fi fi if [ "$_dbc_on_error_option" = "abort" ]; then dbc_abort || return $? fi if [ "$_dbc_on_error_option" = "retry" ]; then # forget that we've seen all the debconf questions for f in $dbc_register_templates; do db_fset $dbc_package/$f seen false done echo "dbconfig-common: $dbc_package $dbc_command: trying again." >&2 . /usr/share/dbconfig-common/dpkg/config dbc_go $dbc_package $dbc_command $dbc_oldversion || return $? # remove errors shouldn't call postinst if [ "$dbc_retry_after_error" != "remove" ] ; then . /usr/share/dbconfig-common/dpkg/postinst else . /usr/share/dbconfig-common/dpkg/prerm fi dbc_go $dbc_package $dbc_command $dbc_oldversion || return $? dbc_tried_again="yes" fi if [ "$_dbc_on_error_option" = "retry (skip questions)" ]; then echo "dbconfig-common: $dbc_package $dbc_command: trying again (skip questions)." >&2 # remove errors shouldn't call postinst if [ "$dbc_retry_after_error" != "remove" ] ; then . /usr/share/dbconfig-common/dpkg/postinst else . /usr/share/dbconfig-common/dpkg/prerm fi dbc_go $dbc_package $dbc_command $dbc_oldversion || return $? dbc_tried_again="yes" fi if [ "$_dbc_on_error_option" = "ignore" ]; then echo "dbconfig-common: $dbc_package $dbc_command: ignoring errors from here forwards" 2>&1 # XXX this would be better _dbc_no_act="true" dbc_checkuser_cmd=true dbc_createdb_cmd=true dbc_createuser_cmd=true dbc_dbvendor=true dbc_default_admin=true dbc_default_dbuser=true dbc_dropdb_cmd=true dbc_dropuser_cmd=true dbc_dump_cmd=true dbc_register_templates="" dbc_sqlexec_cmd=true dbc_sqlfile_cmd=true dbc_use_dbuser=true return 0 fi } ## ## exactly what you'd think ## dbc_forget_dbadmin_password(){ _dbc_debug "dbc_forget_dbadmin_password() $@" echo dbconfig-common: flushing administrative password >&2 db_reset $dbc_package/$dbc_dbtype/admin-pass || true db_fset $dbc_package/$dbc_dbtype/admin-pass seen false || true db_reset $dbc_package/password-confirm || true db_fset $dbc_package/password-confirm seen false || true } ## ## exactly what you'd think ## dbc_forget_app_password(){ _dbc_debug "dbc_forget_app_password() $@" db_reset $dbc_package/$dbc_dbtype/app-pass || true db_fset $dbc_package/$dbc_dbtype/app-pass seen false || true db_reset $dbc_package/app-password-confirm || true db_fset $dbc_package/app-password-confirm seen false || true } ## ## exactly what you'd think ## ## usage: dbc_get_admin_pass package dbtype ## dbc_get_admin_pass(){ local have_admin_pass pass1 _tmp_dbadmin _dbc_debug "dbc_get_admin_pass() $@" # Frontends don't need the admin password as they don't put anything in the # database. if [ "$dbc_frontend" ]; then return 0 fi # Non-authenticated dbtypes aren't using passwords. if echo "$dbc_authenticated_dbtypes" | grep -qv "$dbc_dbtype"; then return 0 fi # (PostgreSQL) peer/ident doesn't need the admin password. if [ "$dbc_authmethod_admin" = "ident" ]; then return 0 fi db_fget $dbc_package/$dbc_dbtype/admin-pass seen if [ "$RET" = "true" ]; then have_admin_pass="yes" fi # make sure the passwords are the same, safely while [ ! "$have_admin_pass" ]; do # To prevent mistakes where people forgot which admin-user they used # let's put the account name into the template. db_get $dbc_package/$dbc_dbtype/admin-user && _tmp_dbadmin="$RET" db_subst $dbc_package/$dbc_dbtype/admin-pass dbadmin "$_tmp_dbadmin" # get the administrative password db_input $dbc_prio_high $dbc_package/$dbc_dbtype/admin-pass || true if [ $dbc_statefull ] ; then db_go || return $? else db_go || true fi db_get $dbc_package/$dbc_dbtype/admin-pass pass1="$RET" if [ "$dbc_dbtype" = "pgsql" ] && [ ! "$pass1" ]; then db_input $dbc_prio_high $dbc_package/pgsql/no-empty-passwords || true db_reset $dbc_package/$dbc_dbtype/admin-pass db_fset $dbc_package/$dbc_dbtype/admin-pass seen false if [ $dbc_statefull ] ; then db_go || return $? else db_go || true fi else have_admin_pass="yes" fi done db_get $dbc_package/$dbc_dbtype/admin-pass dbc_dbadmpass="$RET" } ## ## exactly what you'd think ## ## usage: dbc_get_app_pass package dbtype ## dbc_get_app_pass(){ local have_app_pass pass1 pass2 _dbc_debug "dbc_get_app_pass() $@" db_fget $dbc_package/$dbc_dbtype/app-pass seen if [ "$RET" = "true" ]; then have_app_pass="yes" db_get $dbc_package/$dbc_dbtype/app-pass dbc_dbpass="$RET" fi # make sure the passwords are the same, safely while [ ! "$have_app_pass" ]; do # forget the password-confirm question first, as it's shared db_reset $dbc_package/app-password-confirm db_fset $dbc_package/app-password-confirm seen false # get the appistrative password # do we really want/need prio high (maybe prio_remote_question) # same prio as below db_input $dbc_prio_high $dbc_package/$dbc_dbtype/app-pass || true if [ $dbc_statefull ] ; then db_go || return $? else db_go || true fi db_get $dbc_package/$dbc_dbtype/app-pass pass1="$RET" # get the password again, if it is not empty if [ "$pass1" ]; then # do we really want/need prio high (maybe prio_remote_question) # same prio as above db_input $dbc_prio_high $dbc_package/app-password-confirm || true if [ $dbc_statefull ] ; then db_go || return $? else db_go || true fi db_get $dbc_package/app-password-confirm pass2="$RET" fi # test to see if the passwords match if [ "$pass1" = "$pass2" ]; then dbc_dbpass="$pass1" have_app_pass="yes" else # tell them the passwords didn't match, loop again db_reset $dbc_package/$dbc_dbtype/app-pass db_fset $dbc_package/$dbc_dbtype/app-pass seen false db_input $dbc_prio_high $dbc_package/passwords-do-not-match || true if [ $dbc_statefull ] ; then db_go || return $? else db_go || true fi fi done if [ ! "$dbc_dbpass" ]; then dbc_dbpass=$(env LANG=C LC_ALL=C tr -dc "[:alnum:]" < /dev/urandom | dd bs=1 count=12 2>/dev/null) db_set $dbc_package/$dbc_dbtype/app-pass "$dbc_dbpass" db_set $dbc_package/app-password-confirm "$dbc_dbpass" fi } ## ## perform any necessary cleanup before exiting the postinst ## dbc_postinst_cleanup(){ _dbc_debug "dbc_postinst_cleanup() $@" if echo "$dbc_authenticated_dbtypes" | grep -q "$dbc_dbtype"; then if [ "$dbc_remember_admin_pass" != "true" ]; then dbc_forget_dbadmin_password fi if [ "$dbc_remember_app_pass" != "true" ]; then dbc_forget_app_password fi fi db_reset $dbc_package/internal/skip-preseed db_reset $dbc_package/internal/reconfiguring } ## ## determine whether a db is supported by a package ## dbc_detect_supported_dbtype(){ local query_dbtype _dbc_debug "dbc_detect_supported_dbtype() $@" query_dbtype=$1 # see if the package says it's supported if echo $dbc_dbtypes | grep -qE "(^|,[[:space:]]*)$query_dbtype(\$|,)"; then return 0 fi return 1 } ## ## determine whether a db is installed on the system ## dbc_detect_installed_dbtype(){ _dbc_debug "dbc_detect_installed_dbtype() $@" _dbc_detect_installed_dbtype "$@" } ### ### register all the necessary debconf templates ### dbc_register_debconf(){ local f local _dbc_debug "dbc_register_debconf() $@" for f in $dbc_register_templates; do # register the question, but bail if it doesn't (yet) exist # failure is gracefully handled elsewhere if ! db_register dbconfig-common/$f $dbc_package/$f >/dev/null 2>&1; then return 1 fi # perform some basic customizing substitutions if [ "$dbc_packagetitle" ]; then db_subst $dbc_package/$f pkg $dbc_packagetitle else db_subst $dbc_package/$f pkg $dbc_package fi if [ "$dbc_dbvendor" ]; then db_subst $dbc_package/$f dbvendor $dbc_dbvendor fi done if [ "$dbc_dbtypes" ]; then db_subst $dbc_package/database-type database_types $dbc_dbtypes fi } ### ### dbc_sq_escape: escape any single quotes present in a string ### ### this will safely escape a string which is to be stored inside ### single quotes. that is as'df -> as'\''df ### dbc_sq_escape(){ sed -e "s,','\\\\'',g" << EOF $@ EOF } ### ### dbc_no_thanks: check if dbconfig-no-thanks is (going to be) installed ### ### dbconfig-no-thanks is meant to allow opting out of dbc help. However, ### according to policy 3.9.1 the maintainer scripts may be called before the ### package is unpacked, so we can't just check for files. ### dbc_no_thanks(){ local no_thanks_status # db:Status-Want requires dpkg 1.17.11 no_thanks_status=$(dpkg-query -W -f='${db:Status-Want}' dbconfig-no-thanks 2>/dev/null) if [ "${no_thanks_status}" = install ] || [ "${no_thanks_status}" = hold ] ; then _dbc_debug "dbconfig-no-thanks is installed. Nothing to do for dbconfig-common." return 0 else return 1 fi }