# # Check conditions that depend on BACKUP_URL or OUTPUT_URL # in particular conditions that depend on their schemes. # if test "$BACKUP_URL" ; then local backup_scheme="$( url_scheme "$BACKUP_URL" )" case "$backup_scheme" in (iso) case $WORKFLOW in (mkrescue|mkbackuponly) # When the backup is configured to be in the ISO (e.g. via BACKUP_URL="iso:///mybackup") # only "rear mkbackup" results an ISO (or ISOs cf. https://github.com/rear/rear/issues/1545) # that is/are usable for "rear recover". When the backup is configured to be in the ISO # the mkrescue workflow results an ISO without backup which lets "rear recover" # fail with "ERROR: Backup archive 'backup.tar.gz' not found." # cf. https://github.com/rear/rear/issues/1547 and https://github.com/rear/rear/issues/1545 # and the mkbackuponly workflow exits with exit code 0 but results no ISO at all # cf. https://github.com/rear/rear/issues/1548 # so that mkrescue and mkbackuponly usually do not work for the 'iso' backup scheme. # But there are special cases where mkrescue/mkbackuponly with BACKUP_URL=iso is used # so that we cannot error out in any case, cf. https://github.com/rear/rear/issues/1613 # Accordingly a UserInput dialog that errors out by default to be on the safe side is used # to provide a ready for use mean of final power to the user to enforce what ReaR must do: prompt="Proceed regardless that '$WORKFLOW' could be destructive with a '$backup_scheme' BACKUP_URL ?" workflow_uppercase="$( tr '[:lower:]' '[:upper:]' <<< $WORKFLOW )" local user_input_ID="BACKUP_URL_ISO_PROCEED_$workflow_uppercase" input_value="" wilful_input="" input_value="$( UserInput -I "$user_input_ID" -p "$prompt" -D 'No' )" && wilful_input="yes" || wilful_input="no" if ! is_true "$input_value" ; then if is_true "$wilful_input" ; then LogPrint "User confirmed to not proceed '$WORKFLOW' with a '$backup_scheme' BACKUP_URL" else LogPrint "Aborting '$WORKFLOW' with a '$backup_scheme' BACKUP_URL by default" fi Error "The $WORKFLOW workflow does not work for the BACKUP_URL scheme '$backup_scheme'" fi LogPrint "User confirmed to proceed regardless that '$WORKFLOW' could be destructive with a '$backup_scheme' BACKUP_URL" ;; esac ;; esac else # A BACKUP_URL is not mandatory in general, see in 'man rear' # "An example to use TSM for backup and ISO for output" # cf. https://github.com/rear/rear/issues/1532#issuecomment-336810460 # but for BACKUP=NETFS a BACKUP_URL is required in practice # cf. https://github.com/rear/rear/issues/1532#issuecomment-336810460 # so that we error out to be safe against possible "rear recover" failures: test "NETFS" = $BACKUP && Error "BACKUP=NETFS requires a BACKUP_URL backup target location" fi if test "$OUTPUT_URL" ; then local output_scheme="$( url_scheme "$OUTPUT_URL" )" case "$output_scheme" in (fish|ftp|ftps|hftp|http|https|sftp) local required_prog='lftp' has_binary $required_prog || Error "The OUTPUT_URL scheme '$output_scheme' requires the '$required_prog' command which is missing" ;; (iso) Error "The OUTPUT_URL scheme cannot be '$output_scheme'" ;; (null) # OUTPUT_URL=null conflicts with OUTPUT=USB # because for OUTPUT=USB output/USB/Linux-i386/850_make_USB_bootable.sh # wants to make the USB device bootable which cannot work with OUTPUT_URL=null # see https://github.com/rear/rear/issues/1571#issuecomment-343467593 test "USB" = "$OUTPUT" && Error "'OUTPUT_URL=null' conflicts with 'OUTPUT=USB'" ;; esac fi