112 lines
3.9 KiB
Go
112 lines
3.9 KiB
Go
// Copyright or © or Copr. happyDNS (2020)
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//
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// contact@happydomain.org
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//
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// This software is a computer program whose purpose is to provide a modern
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// interface to interact with DNS systems.
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//
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// This software is governed by the CeCILL license under French law and abiding
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// by the rules of distribution of free software. You can use, modify and/or
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// redistribute the software under the terms of the CeCILL license as
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// circulated by CEA, CNRS and INRIA at the following URL
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// "http://www.cecill.info".
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//
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// As a counterpart to the access to the source code and rights to copy, modify
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// and redistribute granted by the license, users are provided only with a
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// limited warranty and the software's author, the holder of the economic
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// rights, and the successive licensors have only limited liability.
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//
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// In this respect, the user's attention is drawn to the risks associated with
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// loading, using, modifying and/or developing or reproducing the software by
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// the user in light of its specific status of free software, that may mean
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// that it is complicated to manipulate, and that also therefore means that it
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// is reserved for developers and experienced professionals having in-depth
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// computer knowledge. Users are therefore encouraged to load and test the
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// software's suitability as regards their requirements in conditions enabling
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// the security of their systems and/or data to be ensured and, more generally,
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// to use and operate it in the same conditions as regards security.
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//
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// The fact that you are presently reading this means that you have had
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// knowledge of the CeCILL license and that you accept its terms.
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package happydns
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import (
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"crypto/sha1"
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"fmt"
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"io"
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"github.com/miekg/dns"
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)
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// Service represents a service provided by one or more DNS record.
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type Service interface {
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// GetNbResources get the number of main Resources contains in the Service.
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GetNbResources() int
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// GenComment sum up the content of the Service, in a small usefull string.
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GenComment(origin string) string
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// genRRs generates corresponding RRs.
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GenRRs(domain string, ttl uint32, origin string) []dns.RR
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}
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// ServiceMeta holds the metadata associated to a Service.
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type ServiceMeta struct {
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// Type is the string representation of the Service's type.
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Type string `json:"_svctype"`
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// Id is the Service's identifier.
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Id Identifier `json:"_id,omitempty"`
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// OwnerId is the User's identifier for the current Service.
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OwnerId Identifier `json:"_ownerid,omitempty"`
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// Domain contains the abstract domain where this Service relates.
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Domain string `json:"_domain"`
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// Ttl contains the specific TTL for the underlying Resources.
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Ttl uint32 `json:"_ttl"`
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// Comment is a string that helps user to distinguish the Service.
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Comment string `json:"_comment,omitempty"`
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// UserComment is a supplementary string defined by the user to
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// distinguish the Service.
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UserComment string `json:"_mycomment,omitempty"`
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// Aliases exposes the aliases defined on this Service.
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Aliases []string `json:"_aliases,omitempty"`
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// NbResources holds the number of Resources stored inside this Service.
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NbResources int `json:"_tmp_hint_nb"`
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}
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// ServiceCombined combined ServiceMeta + Service
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type ServiceCombined struct {
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Service
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ServiceMeta
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}
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// UnmarshalServiceJSON stores a functor defined in services/interfaces.go that
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// can't be defined here due to cyclic imports.
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var UnmarshalServiceJSON func(*ServiceCombined, []byte) error
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// UnmarshalJSON points to the implementation of the UnmarshalJSON function for
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// the encoding/json module.
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func (svc *ServiceCombined) UnmarshalJSON(b []byte) error {
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return UnmarshalServiceJSON(svc, b)
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}
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func ValidateService(svc Service, subdomain, origin string) ([]byte, error) {
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records := svc.GenRRs(subdomain, 0, origin)
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if len(records) == 0 {
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return nil, fmt.Errorf("No record can be generated from your service.")
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} else {
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hash := sha1.New()
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io.WriteString(hash, records[0].String())
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return hash.Sum(nil), nil
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}
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}
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