329 lines
9.8 KiB
Crystal
329 lines
9.8 KiB
Crystal
require "json"
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require "uuid"
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require "uuid/json"
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require "baguette-crystal-base"
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require "dodb"
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class DNSManager::Storage
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getter user_data : DODB::CachedDataBase(UserData)
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getter user_data_by_uid : DODB::Index(UserData)
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getter zones : DODB::CachedDataBase(Zone)
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getter zones_by_domain : DODB::Index(Zone)
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def initialize(@root : String, reindex : Bool = false)
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@user_data = DODB::CachedDataBase(UserData).new "#{@root}/user-data"
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@user_data_by_uid = @user_data.new_index "uid", &.uid.to_s
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@zones = DODB::CachedDataBase(Zone).new "#{@root}/zones"
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@zones_by_domain = @zones.new_index "domain", &.domain
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Baguette::Log.info "storage initialized"
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if reindex
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Baguette::Log.debug "Reindexing user data..."
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@user_data.reindex_everything!
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Baguette::Log.debug "Reindexing zones..."
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@zones.reindex_everything!
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Baguette::Log.debug "Reindexed!"
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end
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end
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def get_user_data(uid : Int32)
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user_data_by_uid.get uid.to_s
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rescue e : DODB::MissingEntry
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entry = UserData.new uid
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entry
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end
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def get_user_data(user : ::AuthD::User::Public)
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get_user_data user.uid
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end
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def update_user_data(user_data : UserData)
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user_data_by_uid.update_or_create user_data.uid.to_s, user_data
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end
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def ensure_user_data(user_id : Int32)
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user_data = user_data_by_uid.get? user_id.to_s
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unless user_data
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Baguette::Log.info "New user #{user_id}"
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user_data = UserData.new user_id
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@user_data << user_data
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end
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user_data
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end
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def new_domain(accepted_domains : Array(String),
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template_directory : String,
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user_id : Int32,
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domain : String) : IPC::JSON
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# User must exist.
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user_data = user_data_by_uid.get? user_id.to_s
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unless user_data
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Baguette::Log.warning "unknown user #{user_id} tries to add domain #{domain}"
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return Response::UnknownUser.new
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end
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return Response::DomainAlreadyExists.new if zones_by_domain.get? domain
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# Verify if the domain is acceptable.
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matching_domains = accepted_domains.select { |adomain| domain.ends_with? adomain }
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unless matching_domains.size > 0
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Baguette::Log.warning "trying to add an unacceptable domain: #{domain}"
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return Response::UnacceptableDomain.new
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end
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matching_domains.each do |md|
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Baguette::Log.info "Add new domain #{domain} (matching domain #{md})"
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end
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# Verify the domain name validity.
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return Response::InvalidDomainName.new unless Zone.is_domain_valid? domain
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# Fill a template zone.
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tld = matching_domains.pop
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default_zone = Zone.from_json File.read "#{template_directory}/#{tld}.json"
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# Replace domain by the real domain.
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default_zone.replace_domain domain
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#
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# Actually write data on-disk.
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#
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# Add the domain to the user's domain.
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user_data.domains << domain
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update_user_data user_data
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# Add the new zone in the database.
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zones_by_domain.update_or_create domain, default_zone
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Response::DomainAdded.new domain
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end
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def add_or_update_zone(user_id : Int32, zone : Zone) : IPC::JSON
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# Test zone validity.
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if errors = zone.get_errors?
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Baguette::Log.warning "zone #{zone.domain} update with errors: #{errors}"
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return Response::InvalidZone.new errors
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end
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# User must exist.
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user_data = user_data_by_uid.get? user_id.to_s
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unless user_data
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Baguette::Log.warning "unknown user #{user_id} tries to add -or update- zone #{zone.domain}"
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return Response::UnknownUser.new
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end
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# Does the zone already exist?
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if z = zones_by_domain.get? zone.domain
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# User must own the zone.
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unless user_data.domains.includes?(zone.domain) || user_data.admin
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Baguette::Log.warning "user #{user_id} doesn't own domain #{zone.domain}"
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return Response::NoOwnership.new
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end
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else
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# Add the domain to the user's domain.
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user_data.domains << zone.domain
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# Actually write data on-disk.
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update_user_data user_data
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end
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# Add -or replace- the zone.
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zones_by_domain.update_or_create zone.domain, zone
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Response::Success.new
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rescue e
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Baguette::Log.error "trying to add -or update- zone #{zone.domain}: #{e}"
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Response::Error.new "error while adding or updating the domain #{zone.domain}"
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end
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def add_rr(user_id : Int32, domain : String, rr : Zone::ResourceRecord) : IPC::JSON
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# User must exist.
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user_data = user_data_by_uid.get? user_id.to_s
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unless user_data
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Baguette::Log.warning "unknown user #{user_id} tries to add a RR in domain #{domain}"
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return Response::UnknownUser.new
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end
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# Zone must exist.
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zone = zones_by_domain.get? domain
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return Response::DomainNotFound.new unless zone
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# User must own the zone.
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unless user_data.domains.includes?(domain) || user_data.admin
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Baguette::Log.warning "user #{user_id} doesn't own domain #{domain}"
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return Response::NoOwnership.new
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end
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# Test RR validity.
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rr.get_errors.tap do |errors|
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unless errors.empty?
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Baguette::Log.warning "add RR with errors: #{errors}"
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return Response::InvalidRR.new errors
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end
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end
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zone << rr
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# Update the zone.
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zones_by_domain.update_or_create zone.domain, zone
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Response::RRAdded.new zone.domain, rr
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rescue e
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Baguette::Log.error "trying to add a resource record in domain #{domain}: #{e}"
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Response::Error.new "error while adding a resource record in domain #{domain}"
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end
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def update_rr(user_id : Int32, domain : String, rr : Zone::ResourceRecord) : IPC::JSON
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# User must exist.
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user_data = user_data_by_uid.get? user_id.to_s
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unless user_data
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Baguette::Log.warning "unknown user #{user_id} tries to update a RR in domain #{domain}"
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return Response::UnknownUser.new
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end
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# Zone must exist.
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zone = zones_by_domain.get? domain
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return Response::DomainNotFound.new unless zone
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# User must own the zone.
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unless user_data.domains.includes?(domain) || user_data.admin
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Baguette::Log.warning "user #{user_id} doesn't own domain #{domain}"
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return Response::NoOwnership.new
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end
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# Test RR validity.
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rr.get_errors.tap do |errors|
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unless errors.empty?
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Baguette::Log.warning "update RR with errors: #{errors}"
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return Response::InvalidRR.new errors
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end
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end
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stored_rrs = zone.resources.select { |x| x.rrid == rr.rrid }
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unless stored_rrs.size > 0
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Baguette::Log.warning "modifying a RR that doesn't exist (#{rr.rrid}) in domain #{domain}"
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return Response::RRNotFound.new
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end
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# Verify that this resource isn't ReadOnly.
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stored_rrs.each do |stored_rr|
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return Response::RRReadOnly.new domain, rr if stored_rr.readonly
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end
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zone.resources = zone.resources.map { |x| x.rrid == rr.rrid ? rr : x }
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# Update the zone.
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zones_by_domain.update_or_create zone.domain, zone
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Response::RRUpdated.new domain, rr
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rescue e
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Baguette::Log.error "trying to replace a resource record in domain #{domain}: #{e}"
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Response::Error.new "error while replacing a resource record in domain #{domain}"
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end
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def delete_rr(user_id : Int32, domain : String, rrid : UInt32) : IPC::JSON
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# User must exist.
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user_data = user_data_by_uid.get? user_id.to_s
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unless user_data
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Baguette::Log.warning "unknown user #{user_id} tries to delete a RR in domain #{domain}"
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return Response::UnknownUser.new
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end
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# Zone must exist.
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zone = zones_by_domain.get? domain
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return Response::DomainNotFound.new unless zone
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# User must own the zone.
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unless user_data.domains.includes?(domain) || user_data.admin
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Baguette::Log.warning "user #{user_id} doesn't own domain #{domain}"
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return Response::NoOwnership.new
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end
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zone.resources.select! { |x| x.rrid != rrid }
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# Update the zone.
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zones_by_domain.update_or_create zone.domain, zone
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Response::RRDeleted.new rrid
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rescue e
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Baguette::Log.error "trying to remove a resource record in domain #{domain}: #{e}"
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Response::Error.new "error while removing a resource record in domain #{domain}"
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end
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def delete_domain(user_id : Int32, domain : String) : IPC::JSON
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# User must exist.
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user_data = user_data_by_uid.get? user_id.to_s
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unless user_data
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Baguette::Log.warning "unknown user #{user_id} tries to delete domain #{domain}"
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return Response::UnknownUser.new
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end
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# User must own the domain.
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unless user_data.domains.includes?(domain) || user_data.admin
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Baguette::Log.warning "user #{user_id} tries to delete domain #{domain} but doesn't own it"
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return Response::NoOwnership.new
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end
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# Remove this domain from the list of user's domains.
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user_data.domains.delete domain
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# Update on-disk user data.
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update_user_data user_data
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# Remove the related zone.
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zones_by_domain.delete domain
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Response::DomainDeleted.new domain
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rescue e
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Baguette::Log.error "trying to delete a domain #{domain}: #{e}"
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Response::Error.new "error while deleting the domain #{domain}"
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end
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def get_zone(user_id : Int32, domain : String) : IPC::JSON
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# User must exist.
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user_data = user_data_by_uid.get? user_id.to_s
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unless user_data
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Baguette::Log.warning "unknown user #{user_id} tries to get zone #{domain}"
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return Response::UnknownUser.new
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end
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# User must own the domain.
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unless user_data.domains.includes?(domain) || user_data.admin
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Baguette::Log.warning "user #{user_id} tries to get zone #{domain} but doesn't own it"
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return Response::NoOwnership.new
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end
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zone = zones_by_domain.get? domain
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unless zone
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return Response::UnknownZone.new
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end
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Response::Zone.new zone
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rescue e
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Baguette::Log.error "trying to get a zone #{domain}: #{e}"
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Response::Error.new "error while accessing a zone #{domain}"
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end
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def user_domains(user_id : Int32) : IPC::JSON
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# User must exist.
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user_data = user_data_by_uid.get? user_id.to_s
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unless user_data
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Baguette::Log.warning "unknown user #{user_id} tries to list its domains"
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return Response::UnknownUser.new
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end
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Response::DomainList.new user_data.domains
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rescue e
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Baguette::Log.error "trying to list all user #{user_id} domains: #{e}"
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Response::Error.new "error while listing domains"
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end
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end
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require "./storage/*"
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