mirror of
https://github.com/m13253/dns-over-https.git
synced 2024-09-21 07:47:09 +00:00
93 lines
3.0 KiB
Go
93 lines
3.0 KiB
Go
/*
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DNS-over-HTTPS
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Copyright (C) 2017-2018 Star Brilliant <m13253@hotmail.com>
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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*/
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package jsondns
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import (
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"encoding/json"
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"time"
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)
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type QuestionList []Question
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func (ql *QuestionList) UnmarshalJSON(b []byte) error {
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// Fix variant question response in Response.Question
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//
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// Solution taken from:
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// https://engineering.bitnami.com/articles/dealing-with-json-with-non-homogeneous-types-in-go.html
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// https://archive.is/NU4zR
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if len(b) > 0 && b[0] == '[' {
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return json.Unmarshal(b, (*[]Question)(ql))
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}
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var q Question
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if err := json.Unmarshal(b, &q); err != nil {
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return err
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}
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*ql = []Question{q}
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return nil
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}
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type Response struct {
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// Standard DNS response code (32 bit integer)
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Status uint32 `json:"Status"`
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// Whether the response is truncated
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TC bool `json:"TC"`
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// Recursion desired
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RD bool `json:"RD"`
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// Recursion available
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RA bool `json:"RA"`
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// Whether all response data was validated with DNSSEC
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// FIXME: We don't have DNSSEC yet! This bit is not reliable!
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AD bool `json:"AD"`
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// Whether the client asked to disable DNSSEC
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CD bool `json:"CD"`
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Question QuestionList `json:"Question"`
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Answer []RR `json:"Answer,omitempty"`
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Authority []RR `json:"Authority,omitempty"`
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Additional []RR `json:"Additional,omitempty"`
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Comment string `json:"Comment,omitempty"`
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EdnsClientSubnet string `json:"edns_client_subnet,omitempty"`
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// Least time-to-live
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HaveTTL bool `json:"-"`
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LeastTTL uint32 `json:"-"`
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EarliestExpires time.Time `json:"-"`
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}
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type Question struct {
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// FQDN with trailing dot
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Name string `json:"name"`
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// Standard DNS RR type
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Type uint16 `json:"type"`
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}
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type RR struct {
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Question
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// Record's time-to-live in seconds
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TTL uint32 `json:"TTL"`
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// TTL in absolute time
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Expires time.Time `json:"-"`
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ExpiresStr string `json:"Expires"`
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// Data
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Data string `json:"data"`
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}
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