# packages/attachments/www/download/index.vuh

ad_page_contract {

    Virtual URL handler for file downloads

    @author Ben Adida
    @creation-date 2 July 2002
    @cvs-id $Id: index.vuh,v 1.3.2.2 2019/07/11 16:38:53 hectorr Exp $
} {
    object_id:naturalnum,notnull
    attachment_id:naturalnum,notnull
}
#
# Permission check
#
permission::require_permission -object_id $object_id -privilege read
#
# Double check if this is the right attachment, and get the live revision if the
# object is a 'content_item' or subtype
#
set object_type [acs_object_type $attachment_id]
if {$object_type eq ""} {
    #
    # No object type
    #
    set version_id ""
} elseif {[content::item::is_subclass \
                -object_type $object_type \
                -supertype "content_item"]} {
    #
    # Content item, or subtype
    #
    set version_id [db_string select_version_id {} -default {}]
} elseif {[content::item::is_subclass \
                -object_type $object_type \
                -supertype "content_revision"]} {
    #
    # Content revision, or subtype
    #
    set version_id [db_string select_version_id_revision {} -default {}]
}
#
# Last check
#
if {$version_id eq ""} {
    ad_return_complaint 1 [_ attachments.lt_No_such_attachment_fo]
    ad_script_abort
    return
}
#
# Good to go
#
cr_write_content -revision_id $version_id

# Local variables:
#    mode: tcl
#    tcl-indent-level: 4
#    indent-tabs-mode: nil
# End: