├── .gitignore
├── LICENSE
├── README.md
├── cmd
    └── zns
    │   └── main.go
├── go.mod
├── go.sum
├── http.go
├── misc
    └── systemd
    │   ├── zns-tcp.socket
    │   ├── zns-udp.socket
    │   └── zns.service
├── pay.go
├── ticket.go
├── ticket_test.go
└── web
    ├── app.js
    ├── index.html
    ├── qrcode.js
    └── style.css


/.gitignore:
--------------------------------------------------------------------------------
1 | .env
2 | cmd/zns/zns
3 | 


--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
 1 | MIT License
 2 | 
 3 | Copyright (c) 2024 go-kiss
 4 | 
 5 | Permission is hereby granted, free of charge, to any person obtaining a copy
 6 | of this software and associated documentation files (the "Software"), to deal
 7 | in the Software without restriction, including without limitation the rights
 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 9 | copies of the Software, and to permit persons to whom the Software is
10 | furnished to do so, subject to the following conditions:
11 | 
12 | The above copyright notice and this permission notice shall be included in all
13 | copies or substantial portions of the Software.
14 | 
15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 | SOFTWARE.
22 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | # ZNS - Simple DoH server in Go
 2 | 
 3 | ## 安装
 4 | 
 5 | ```bash
 6 | go install github.com/taoso/zns/cmd/zns@latest
 7 | ```
 8 | 
 9 | ## 运行
10 | 
11 | ```bash
12 | zns -free -tls-hosts zns.example.org -root /var/www/html
13 | ```
14 | 
15 | ## 原理
16 | 
17 | <https://taoshu.in/dns/diy-doh.html>
18 | 
19 | ## 星标趋势
20 | 
21 | <a href="https://www.star-history.com/#taoso/zns&Date">
22 |  <picture>
23 |    <source media="(prefers-color-scheme: dark)" srcset="https://api.star-history.com/svg?repos=taoso/zns&type=Date&theme=dark" />
24 |    <source media="(prefers-color-scheme: light)" srcset="https://api.star-history.com/svg?repos=taoso/zns&type=Date" />
25 |    <img alt="Star History Chart" src="https://api.star-history.com/svg?repos=taoso/zns&type=Date" />
26 |  </picture>
27 | </a>
28 | 


--------------------------------------------------------------------------------
/cmd/zns/main.go:
--------------------------------------------------------------------------------
  1 | package main
  2 | 
  3 | import (
  4 | 	"crypto/tls"
  5 | 	"flag"
  6 | 	"fmt"
  7 | 	"log"
  8 | 	"net"
  9 | 	"net/http"
 10 | 	"os"
 11 | 	"strconv"
 12 | 	"strings"
 13 | 
 14 | 	"github.com/quic-go/quic-go/http3"
 15 | 	"github.com/taoso/zns"
 16 | 	"golang.org/x/crypto/acme/autocert"
 17 | )
 18 | 
 19 | var tlsCert string
 20 | var tlsKey string
 21 | var tlsHosts string
 22 | var h12, h3 string
 23 | var upstream string
 24 | var dbPath string
 25 | var price int
 26 | var free bool
 27 | var root string
 28 | 
 29 | func listen() (lnH12 net.Listener, lnH3 net.PacketConn, err error) {
 30 | 	if os.Getenv("LISTEN_PID") == strconv.Itoa(os.Getpid()) {
 31 | 		if os.Getenv("LISTEN_FDS") != "2" {
 32 | 			panic("LISTEN_FDS should be 2")
 33 | 		}
 34 | 		names := strings.Split(os.Getenv("LISTEN_FDNAMES"), ":")
 35 | 		for i, name := range names {
 36 | 			switch name {
 37 | 			case "h12":
 38 | 				f := os.NewFile(uintptr(i+3), "https port")
 39 | 				lnH12, err = net.FileListener(f)
 40 | 			case "h3":
 41 | 				f := os.NewFile(uintptr(i+3), "quic port")
 42 | 				lnH3, err = net.FilePacketConn(f)
 43 | 			}
 44 | 		}
 45 | 	} else {
 46 | 		if h12 != "" {
 47 | 			lnH12, err = net.Listen("tcp", h12)
 48 | 			if err != nil {
 49 | 				return
 50 | 			}
 51 | 		}
 52 | 		if h3 != "" {
 53 | 			lnH3, err = net.ListenPacket("udp", h3)
 54 | 		}
 55 | 	}
 56 | 	return
 57 | }
 58 | 
 59 | func main() {
 60 | 	flag.StringVar(&tlsCert, "tls-cert", "", "File path of TLS certificate")
 61 | 	flag.StringVar(&tlsKey, "tls-key", "", "File path of TLS key")
 62 | 	flag.StringVar(&tlsHosts, "tls-hosts", "", "Host name for ACME")
 63 | 	flag.StringVar(&h12, "h12", ":443", "Listen address for http1 and h2")
 64 | 	flag.StringVar(&h3, "h3", ":443", "Listen address for h3")
 65 | 	flag.StringVar(&upstream, "upstream", "https://doh.pub/dns-query", "DoH upstream URL")
 66 | 	flag.StringVar(&dbPath, "db", "", "File path of Sqlite database")
 67 | 	flag.StringVar(&root, "root", ".", "Root path of static files")
 68 | 	flag.IntVar(&price, "price", 1024, "Traffic price MB/Yuan")
 69 | 	flag.BoolVar(&free, "free", false, `Whether allow free access.
 70 | If not free, you should set the following environment variables:
 71 | 	- ALIPAY_APP_ID
 72 | 	- ALIPAY_PRIVATE_KEY
 73 | 	- ALIPAY_PUBLIC_KEY
 74 | `)
 75 | 
 76 | 	flag.Parse()
 77 | 
 78 | 	var tlsCfg *tls.Config
 79 | 	if tlsHosts != "" {
 80 | 		acm := autocert.Manager{
 81 | 			Prompt:     autocert.AcceptTOS,
 82 | 			Cache:      autocert.DirCache(os.Getenv("HOME") + "/.autocert"),
 83 | 			HostPolicy: autocert.HostWhitelist(strings.Split(tlsHosts, ",")...),
 84 | 		}
 85 | 
 86 | 		tlsCfg = acm.TLSConfig()
 87 | 	} else {
 88 | 		tlsCfg = &tls.Config{}
 89 | 		certs, err := tls.LoadX509KeyPair(tlsCert, tlsKey)
 90 | 		if err != nil {
 91 | 			panic(err)
 92 | 		}
 93 | 		tlsCfg.Certificates = []tls.Certificate{certs}
 94 | 	}
 95 | 
 96 | 	lnH12, lnH3, err := listen()
 97 | 	if err != nil {
 98 | 		panic(err)
 99 | 	}
100 | 
101 | 	var pay zns.Pay
102 | 	var repo zns.TicketRepo
103 | 	if free {
104 | 		repo = zns.FreeTicketRepo{}
105 | 	} else {
106 | 		repo = zns.NewTicketRepo(dbPath)
107 | 		pay = zns.NewPay(
108 | 			os.Getenv("ALIPAY_APP_ID"),
109 | 			os.Getenv("ALIPAY_PRIVATE_KEY"),
110 | 			os.Getenv("ALIPAY_PUBLIC_KEY"),
111 | 		)
112 | 	}
113 | 
114 | 	h := &zns.Handler{Upstream: upstream, Repo: repo, Root: http.Dir(root)}
115 | 	th := &zns.TicketHandler{MBpCNY: price, Pay: pay, Repo: repo}
116 | 
117 | 	mux := http.NewServeMux()
118 | 	mux.Handle("/dns/{token}", h)
119 | 	mux.Handle("/ticket/", th)
120 | 	mux.Handle("/ticket/{token}", th)
121 | 	mux.Handle("/", http.FileServer(h.Root))
122 | 
123 | 	if lnH3 != nil {
124 | 		p := lnH3.LocalAddr().(*net.UDPAddr).Port
125 | 		h.AltSvc = fmt.Sprintf(`h3=":%d"`, p)
126 | 		th.AltSvc = h.AltSvc
127 | 
128 | 		h3 := http3.Server{Handler: mux, TLSConfig: tlsCfg}
129 | 		go h3.Serve(lnH3)
130 | 	}
131 | 
132 | 	lnTLS := tls.NewListener(lnH12, tlsCfg)
133 | 	if err = http.Serve(lnTLS, mux); err != nil {
134 | 		log.Fatal(err)
135 | 	}
136 | }
137 | 


--------------------------------------------------------------------------------
/go.mod:
--------------------------------------------------------------------------------
 1 | module github.com/taoso/zns
 2 | 
 3 | go 1.23.0
 4 | 
 5 | toolchain go1.24.0
 6 | 
 7 | require (
 8 | 	github.com/go-kiss/sqlx v0.0.0-20250514141631-7be2cb31cba2
 9 | 	github.com/miekg/dns v1.1.66
10 | 	github.com/quic-go/quic-go v0.51.0
11 | 	github.com/smartwalle/alipay/v3 v3.2.25
12 | 	github.com/stretchr/testify v1.10.0
13 | 	golang.org/x/crypto v0.38.0
14 | 	modernc.org/sqlite v1.37.1
15 | )
16 | 
17 | require (
18 | 	github.com/davecgh/go-spew v1.1.1 // indirect
19 | 	github.com/dustin/go-humanize v1.0.1 // indirect
20 | 	github.com/go-task/slim-sprig/v3 v3.0.0 // indirect
21 | 	github.com/google/pprof v0.0.0-20250501235452-c0086092b71a // indirect
22 | 	github.com/google/uuid v1.6.0 // indirect
23 | 	github.com/jmoiron/sqlx v1.4.0 // indirect
24 | 	github.com/mattn/go-isatty v0.0.20 // indirect
25 | 	github.com/ncruces/go-strftime v0.1.9 // indirect
26 | 	github.com/onsi/ginkgo/v2 v2.23.4 // indirect
27 | 	github.com/pmezard/go-difflib v1.0.0 // indirect
28 | 	github.com/quic-go/qpack v0.5.1 // indirect
29 | 	github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
30 | 	github.com/smartwalle/ncrypto v1.0.4 // indirect
31 | 	github.com/smartwalle/ngx v1.0.10 // indirect
32 | 	github.com/smartwalle/nsign v1.0.9 // indirect
33 | 	go.uber.org/automaxprocs v1.6.0 // indirect
34 | 	go.uber.org/mock v0.5.2 // indirect
35 | 	golang.org/x/exp v0.0.0-20250506013437-ce4c2cf36ca6 // indirect
36 | 	golang.org/x/mod v0.24.0 // indirect
37 | 	golang.org/x/net v0.40.0 // indirect
38 | 	golang.org/x/sync v0.14.0 // indirect
39 | 	golang.org/x/sys v0.33.0 // indirect
40 | 	golang.org/x/text v0.25.0 // indirect
41 | 	golang.org/x/tools v0.33.0 // indirect
42 | 	gopkg.in/yaml.v3 v3.0.1 // indirect
43 | 	modernc.org/libc v1.65.8 // indirect
44 | 	modernc.org/mathutil v1.7.1 // indirect
45 | 	modernc.org/memory v1.11.0 // indirect
46 | )
47 | 


--------------------------------------------------------------------------------
/go.sum:
--------------------------------------------------------------------------------
  1 | filippo.io/edwards25519 v1.1.0 h1:FNf4tywRC1HmFuKW5xopWpigGjJKiJSV0Cqo0cJWDaA=
  2 | filippo.io/edwards25519 v1.1.0/go.mod h1:BxyFTGdWcka3PhytdK4V28tE5sGfRvvvRV7EaN4VDT4=
  3 | github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
  4 | github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
  5 | github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY=
  6 | github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
  7 | github.com/go-kiss/sqlx v0.0.0-20250514141631-7be2cb31cba2 h1:UtYDAuXfuWHBZtzE97OEHokPKvwV+JP7J6POk+S2L8Q=
  8 | github.com/go-kiss/sqlx v0.0.0-20250514141631-7be2cb31cba2/go.mod h1:ifMW4IAa4MhViphziwc/Onp3r1XPjAYkPHkUtDMaYeY=
  9 | github.com/go-logr/logr v1.4.2 h1:6pFjapn8bFcIbiKo3XT4j/BhANplGihG6tvd+8rYgrY=
 10 | github.com/go-logr/logr v1.4.2/go.mod h1:9T104GzyrTigFIr8wt5mBrctHMim0Nb2HLGrmQ40KvY=
 11 | github.com/go-sql-driver/mysql v1.8.1 h1:LedoTUt/eveggdHS9qUFC1EFSa8bU2+1pZjSRpvNJ1Y=
 12 | github.com/go-sql-driver/mysql v1.8.1/go.mod h1:wEBSXgmK//2ZFJyE+qWnIsVGmvmEKlqwuVSjsCm7DZg=
 13 | github.com/go-task/slim-sprig/v3 v3.0.0 h1:sUs3vkvUymDpBKi3qH1YSqBQk9+9D/8M2mN1vB6EwHI=
 14 | github.com/go-task/slim-sprig/v3 v3.0.0/go.mod h1:W848ghGpv3Qj3dhTPRyJypKRiqCdHZiAzKg9hl15HA8=
 15 | github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
 16 | github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=
 17 | github.com/google/pprof v0.0.0-20250501235452-c0086092b71a h1:rDA3FfmxwXR+BVKKdz55WwMJ1pD2hJQNW31d+l3mPk4=
 18 | github.com/google/pprof v0.0.0-20250501235452-c0086092b71a/go.mod h1:5hDyRhoBCxViHszMt12TnOpEI4VVi+U8Gm9iphldiMA=
 19 | github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
 20 | github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 21 | github.com/jmoiron/sqlx v1.4.0 h1:1PLqN7S1UYp5t4SrVVnt4nUVNemrDAtxlulVe+Qgm3o=
 22 | github.com/jmoiron/sqlx v1.4.0/go.mod h1:ZrZ7UsYB/weZdl2Bxg6jCRO9c3YHl8r3ahlKmRT4JLY=
 23 | github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI=
 24 | github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
 25 | github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 26 | github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
 27 | github.com/lib/pq v1.10.9 h1:YXG7RB+JIjhP29X+OtkiDnYaXQwpS4JEWq7dtCCRUEw=
 28 | github.com/lib/pq v1.10.9/go.mod h1:AlVN5x4E4T544tWzH6hKfbfQvm3HdbOxrmggDNAPY9o=
 29 | github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
 30 | github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
 31 | github.com/mattn/go-sqlite3 v1.14.22 h1:2gZY6PC6kBnID23Tichd1K+Z0oS6nE/XwU+Vz/5o4kU=
 32 | github.com/mattn/go-sqlite3 v1.14.22/go.mod h1:Uh1q+B4BYcTPb+yiD3kU8Ct7aC0hY9fxUwlHK0RXw+Y=
 33 | github.com/miekg/dns v1.1.66 h1:FeZXOS3VCVsKnEAd+wBkjMC3D2K+ww66Cq3VnCINuJE=
 34 | github.com/miekg/dns v1.1.66/go.mod h1:jGFzBsSNbJw6z1HYut1RKBKHA9PBdxeHrZG8J+gC2WE=
 35 | github.com/ncruces/go-strftime v0.1.9 h1:bY0MQC28UADQmHmaF5dgpLmImcShSi2kHU9XLdhx/f4=
 36 | github.com/ncruces/go-strftime v0.1.9/go.mod h1:Fwc5htZGVVkseilnfgOVb9mKy6w1naJmn9CehxcKcls=
 37 | github.com/onsi/ginkgo/v2 v2.23.4 h1:ktYTpKJAVZnDT4VjxSbiBenUjmlL/5QkBEocaWXiQus=
 38 | github.com/onsi/ginkgo/v2 v2.23.4/go.mod h1:Bt66ApGPBFzHyR+JO10Zbt0Gsp4uWxu5mIOTusL46e8=
 39 | github.com/onsi/gomega v1.36.3 h1:hID7cr8t3Wp26+cYnfcjR6HpJ00fdogN6dqZ1t6IylU=
 40 | github.com/onsi/gomega v1.36.3/go.mod h1:8D9+Txp43QWKhM24yyOBEdpkzN8FvJyAwecBgsU4KU0=
 41 | github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 42 | github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 43 | github.com/prashantv/gostub v1.1.0 h1:BTyx3RfQjRHnUWaGF9oQos79AlQ5k8WNktv7VGvVH4g=
 44 | github.com/prashantv/gostub v1.1.0/go.mod h1:A5zLQHz7ieHGG7is6LLXLz7I8+3LZzsrV0P1IAHhP5U=
 45 | github.com/quic-go/qpack v0.5.1 h1:giqksBPnT/HDtZ6VhtFKgoLOWmlyo9Ei6u9PqzIMbhI=
 46 | github.com/quic-go/qpack v0.5.1/go.mod h1:+PC4XFrEskIVkcLzpEkbLqq1uCoxPhQuvK5rH1ZgaEg=
 47 | github.com/quic-go/quic-go v0.51.0 h1:K8exxe9zXxeRKxaXxi/GpUqYiTrtdiWP8bo1KFya6Wc=
 48 | github.com/quic-go/quic-go v0.51.0/go.mod h1:MFlGGpcpJqRAfmYi6NC2cptDPSxRWTOGNuP4wqrWmzQ=
 49 | github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec h1:W09IVJc94icq4NjY3clb7Lk8O1qJ8BdBEF8z0ibU0rE=
 50 | github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec/go.mod h1:qqbHyh8v60DhA7CoWK5oRCqLrMHRGoxYCSS9EjAz6Eo=
 51 | github.com/smartwalle/alipay/v3 v3.2.25 h1:cRDN+fpDWTVHnuHIF/vsJETskRXS/S+fDOdAkzXmV/Q=
 52 | github.com/smartwalle/alipay/v3 v3.2.25/go.mod h1:lVqFiupPf8YsAXaq5JXcwqnOUC2MCF+2/5vub+RlagE=
 53 | github.com/smartwalle/ncrypto v1.0.4 h1:P2rqQxDepJwgeO5ShoC+wGcK2wNJDmcdBOWAksuIgx8=
 54 | github.com/smartwalle/ncrypto v1.0.4/go.mod h1:Dwlp6sfeNaPMnOxMNayMTacvC5JGEVln3CVdiVDgbBk=
 55 | github.com/smartwalle/ngx v1.0.10 h1:L0bHJ+SD4gTY+RxCYGAY866WxsDniW8n0yEesk3OWCw=
 56 | github.com/smartwalle/ngx v1.0.10/go.mod h1:mx/nz2Pk5j+RBs7t6u6k22MPiBG/8CtOMpCnALIG8Y0=
 57 | github.com/smartwalle/nsign v1.0.9 h1:8poAgG7zBd8HkZy9RQDwasC6XZvJpDGQWSjzL2FZL6E=
 58 | github.com/smartwalle/nsign v1.0.9/go.mod h1:eY6I4CJlyNdVMP+t6z1H6Jpd4m5/V+8xi44ufSTxXgc=
 59 | github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOfJA=
 60 | github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
 61 | go.uber.org/automaxprocs v1.6.0 h1:O3y2/QNTOdbF+e/dpXNNW7Rx2hZ4sTIPyybbxyNqTUs=
 62 | go.uber.org/automaxprocs v1.6.0/go.mod h1:ifeIMSnPZuznNm6jmdzmU3/bfk01Fe2fotchwEFJ8r8=
 63 | go.uber.org/mock v0.5.2 h1:LbtPTcP8A5k9WPXj54PPPbjcI4Y6lhyOZXn+VS7wNko=
 64 | go.uber.org/mock v0.5.2/go.mod h1:wLlUxC2vVTPTaE3UD51E0BGOAElKrILxhVSDYQLld5o=
 65 | golang.org/x/crypto v0.38.0 h1:jt+WWG8IZlBnVbomuhg2Mdq0+BBQaHbtqHEFEigjUV8=
 66 | golang.org/x/crypto v0.38.0/go.mod h1:MvrbAqul58NNYPKnOra203SB9vpuZW0e+RRZV+Ggqjw=
 67 | golang.org/x/exp v0.0.0-20250506013437-ce4c2cf36ca6 h1:y5zboxd6LQAqYIhHnB48p0ByQ/GnQx2BE33L8BOHQkI=
 68 | golang.org/x/exp v0.0.0-20250506013437-ce4c2cf36ca6/go.mod h1:U6Lno4MTRCDY+Ba7aCcauB9T60gsv5s4ralQzP72ZoQ=
 69 | golang.org/x/mod v0.24.0 h1:ZfthKaKaT4NrhGVZHO1/WDTwGES4De8KtWO0SIbNJMU=
 70 | golang.org/x/mod v0.24.0/go.mod h1:IXM97Txy2VM4PJ3gI61r1YEk/gAj6zAHN3AdZt6S9Ww=
 71 | golang.org/x/net v0.40.0 h1:79Xs7wF06Gbdcg4kdCCIQArK11Z1hr5POQ6+fIYHNuY=
 72 | golang.org/x/net v0.40.0/go.mod h1:y0hY0exeL2Pku80/zKK7tpntoX23cqL3Oa6njdgRtds=
 73 | golang.org/x/sync v0.14.0 h1:woo0S4Yywslg6hp4eUFjTVOyKt0RookbpAHG4c1HmhQ=
 74 | golang.org/x/sync v0.14.0/go.mod h1:1dzgHSNfp02xaA81J2MS99Qcpr2w7fw1gpm99rleRqA=
 75 | golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 76 | golang.org/x/sys v0.33.0 h1:q3i8TbbEz+JRD9ywIRlyRAQbM0qF7hu24q3teo2hbuw=
 77 | golang.org/x/sys v0.33.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=
 78 | golang.org/x/text v0.25.0 h1:qVyWApTSYLk/drJRO5mDlNYskwQznZmkpV2c8q9zls4=
 79 | golang.org/x/text v0.25.0/go.mod h1:WEdwpYrmk1qmdHvhkSTNPm3app7v4rsT8F2UD6+VHIA=
 80 | golang.org/x/tools v0.33.0 h1:4qz2S3zmRxbGIhDIAgjxvFutSvH5EfnsYrRBj0UI0bc=
 81 | golang.org/x/tools v0.33.0/go.mod h1:CIJMaWEY88juyUfo7UbgPqbC8rU2OqfAV1h2Qp0oMYI=
 82 | google.golang.org/protobuf v1.36.5 h1:tPhr+woSbjfYvY6/GPufUoYizxw1cF/yFoxJ2fmpwlM=
 83 | google.golang.org/protobuf v1.36.5/go.mod h1:9fA7Ob0pmnwhb644+1+CVWFRbNajQ6iRojtC/QF5bRE=
 84 | gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 85 | gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
 86 | gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 87 | gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 88 | gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 89 | modernc.org/cc/v4 v4.26.1 h1:+X5NtzVBn0KgsBCBe+xkDC7twLb/jNVj9FPgiwSQO3s=
 90 | modernc.org/cc/v4 v4.26.1/go.mod h1:uVtb5OGqUKpoLWhqwNQo/8LwvoiEBLvZXIQ/SmO6mL0=
 91 | modernc.org/ccgo/v4 v4.28.0 h1:rjznn6WWehKq7dG4JtLRKxb52Ecv8OUGah8+Z/SfpNU=
 92 | modernc.org/ccgo/v4 v4.28.0/go.mod h1:JygV3+9AV6SmPhDasu4JgquwU81XAKLd3OKTUDNOiKE=
 93 | modernc.org/fileutil v1.3.1 h1:8vq5fe7jdtEvoCf3Zf9Nm0Q05sH6kGx0Op2CPx1wTC8=
 94 | modernc.org/fileutil v1.3.1/go.mod h1:HxmghZSZVAz/LXcMNwZPA/DRrQZEVP9VX0V4LQGQFOc=
 95 | modernc.org/gc/v2 v2.6.5 h1:nyqdV8q46KvTpZlsw66kWqwXRHdjIlJOhG6kxiV/9xI=
 96 | modernc.org/gc/v2 v2.6.5/go.mod h1:YgIahr1ypgfe7chRuJi2gD7DBQiKSLMPgBQe9oIiito=
 97 | modernc.org/libc v1.65.8 h1:7PXRJai0TXZ8uNA3srsmYzmTyrLoHImV5QxHeni108Q=
 98 | modernc.org/libc v1.65.8/go.mod h1:011EQibzzio/VX3ygj1qGFt5kMjP0lHb0qCW5/D/pQU=
 99 | modernc.org/mathutil v1.7.1 h1:GCZVGXdaN8gTqB1Mf/usp1Y/hSqgI2vAGGP4jZMCxOU=
100 | modernc.org/mathutil v1.7.1/go.mod h1:4p5IwJITfppl0G4sUEDtCr4DthTaT47/N3aT6MhfgJg=
101 | modernc.org/memory v1.11.0 h1:o4QC8aMQzmcwCK3t3Ux/ZHmwFPzE6hf2Y5LbkRs+hbI=
102 | modernc.org/memory v1.11.0/go.mod h1:/JP4VbVC+K5sU2wZi9bHoq2MAkCnrt2r98UGeSK7Mjw=
103 | modernc.org/opt v0.1.4 h1:2kNGMRiUjrp4LcaPuLY2PzUfqM/w9N23quVwhKt5Qm8=
104 | modernc.org/opt v0.1.4/go.mod h1:03fq9lsNfvkYSfxrfUhZCWPk1lm4cq4N+Bh//bEtgns=
105 | modernc.org/sortutil v1.2.1 h1:+xyoGf15mM3NMlPDnFqrteY07klSFxLElE2PVuWIJ7w=
106 | modernc.org/sortutil v1.2.1/go.mod h1:7ZI3a3REbai7gzCLcotuw9AC4VZVpYMjDzETGsSMqJE=
107 | modernc.org/sqlite v1.37.1 h1:EgHJK/FPoqC+q2YBXg7fUmES37pCHFc97sI7zSayBEs=
108 | modernc.org/sqlite v1.37.1/go.mod h1:XwdRtsE1MpiBcL54+MbKcaDvcuej+IYSMfLN6gSKV8g=
109 | modernc.org/strutil v1.2.1 h1:UneZBkQA+DX2Rp35KcM69cSsNES9ly8mQWD71HKlOA0=
110 | modernc.org/strutil v1.2.1/go.mod h1:EHkiggD70koQxjVdSBM3JKM7k6L0FbGE5eymy9i3B9A=
111 | modernc.org/token v1.1.0 h1:Xl7Ap9dKaEs5kLoOQeQmPWevfnk/DM5qcLcYlA8ys6Y=
112 | modernc.org/token v1.1.0/go.mod h1:UGzOrNV1mAFSEB63lOFHIpNRUVMvYTc6yu1SMY/XTDM=
113 | 


--------------------------------------------------------------------------------
/http.go:
--------------------------------------------------------------------------------
  1 | package zns
  2 | 
  3 | import (
  4 | 	"bytes"
  5 | 	"encoding/base64"
  6 | 	"io"
  7 | 	"net"
  8 | 	"net/http"
  9 | 	"net/netip"
 10 | 
 11 | 	"github.com/miekg/dns"
 12 | )
 13 | 
 14 | type Handler struct {
 15 | 	Upstream string
 16 | 	Repo     TicketRepo
 17 | 	AltSvc   string
 18 | 	Root     http.Dir
 19 | }
 20 | 
 21 | func (h *Handler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 22 | 	if h.AltSvc != "" {
 23 | 		w.Header().Set("Alt-Svc", h.AltSvc)
 24 | 	}
 25 | 
 26 | 	token := r.PathValue("token")
 27 | 	if token == "" {
 28 | 		http.Error(w, "invalid token", http.StatusUnauthorized)
 29 | 		return
 30 | 	}
 31 | 
 32 | 	ts, err := h.Repo.List(token, 1)
 33 | 	if err != nil {
 34 | 		http.Error(w, "invalid token", http.StatusInternalServerError)
 35 | 		return
 36 | 	}
 37 | 	if len(ts) == 0 || ts[0].Bytes <= 0 {
 38 | 		http.Error(w, "invalid token", http.StatusUnauthorized)
 39 | 		return
 40 | 	}
 41 | 
 42 | 	var question []byte
 43 | 	if r.Method == http.MethodGet {
 44 | 		q := r.URL.Query().Get("dns")
 45 | 		if q == "" {
 46 | 			f, err := h.Root.Open("/index.html")
 47 | 			if err != nil {
 48 | 				http.Error(w, err.Error(), http.StatusInternalServerError)
 49 | 				return
 50 | 			}
 51 | 			io.Copy(w, f)
 52 | 			return
 53 | 		}
 54 | 		question, err = base64.RawURLEncoding.DecodeString(q)
 55 | 	} else {
 56 | 		question, err = io.ReadAll(r.Body)
 57 | 		r.Body.Close()
 58 | 	}
 59 | 	if err != nil {
 60 | 		http.Error(w, err.Error(), http.StatusBadRequest)
 61 | 		return
 62 | 	}
 63 | 
 64 | 	var m dns.Msg
 65 | 	if err := m.Unpack(question); err != nil {
 66 | 		http.Error(w, err.Error(), http.StatusBadRequest)
 67 | 		return
 68 | 	}
 69 | 
 70 | 	var hasSubnet bool
 71 | 	if e := m.IsEdns0(); e != nil {
 72 | 		for _, o := range e.Option {
 73 | 			if o.Option() == dns.EDNS0SUBNET {
 74 | 				a := o.(*dns.EDNS0_SUBNET).Address[:2]
 75 | 				// skip empty subnet like 0.0.0.0/0
 76 | 				if !bytes.HasPrefix(a, []byte{0, 0}) {
 77 | 					hasSubnet = true
 78 | 				}
 79 | 				break
 80 | 			}
 81 | 		}
 82 | 	}
 83 | 
 84 | 	if !hasSubnet {
 85 | 		ip, err := netip.ParseAddrPort(r.RemoteAddr)
 86 | 		if err != nil {
 87 | 			http.Error(w, err.Error(), http.StatusInternalServerError)
 88 | 			return
 89 | 		}
 90 | 		addr := ip.Addr()
 91 | 		opt := &dns.OPT{Hdr: dns.RR_Header{Name: ".", Rrtype: dns.TypeOPT}}
 92 | 		ecs := &dns.EDNS0_SUBNET{Code: dns.EDNS0SUBNET}
 93 | 		var bits int
 94 | 		if addr.Is4() {
 95 | 			bits = 24
 96 | 			ecs.Family = 1
 97 | 		} else {
 98 | 			bits = 48
 99 | 			ecs.Family = 2
100 | 		}
101 | 		ecs.SourceNetmask = uint8(bits)
102 | 		p := netip.PrefixFrom(addr, bits)
103 | 		ecs.Address = net.IP(p.Masked().Addr().AsSlice())
104 | 		opt.Option = append(opt.Option, ecs)
105 | 		m.Extra = []dns.RR{opt}
106 | 	}
107 | 
108 | 	if question, err = m.Pack(); err != nil {
109 | 		http.Error(w, err.Error(), http.StatusBadRequest)
110 | 		return
111 | 	}
112 | 
113 | 	resp, err := http.Post(h.Upstream, "application/dns-message", bytes.NewReader(question))
114 | 	if err != nil {
115 | 		http.Error(w, err.Error(), http.StatusInternalServerError)
116 | 		return
117 | 	}
118 | 	defer resp.Body.Close()
119 | 
120 | 	answer, err := io.ReadAll(resp.Body)
121 | 	if err != nil {
122 | 		http.Error(w, err.Error(), http.StatusInternalServerError)
123 | 		return
124 | 	}
125 | 
126 | 	if err = h.Repo.Cost(token, len(question)+len(answer)); err != nil {
127 | 		http.Error(w, err.Error(), http.StatusUnauthorized)
128 | 		return
129 | 	}
130 | 
131 | 	w.Header().Add("content-type", "application/dns-message")
132 | 	w.Write(answer)
133 | }
134 | 


--------------------------------------------------------------------------------
/misc/systemd/zns-tcp.socket:
--------------------------------------------------------------------------------
 1 | [Unit]
 2 | Description=zns tcp socket
 3 | 
 4 | [Socket]
 5 | ListenStream=443
 6 | BindIPv6Only=both
 7 | FileDescriptorName=h12
 8 | Service=zns.service
 9 | 
10 | [Install]
11 | WantedBy=sockets.target
12 | 


--------------------------------------------------------------------------------
/misc/systemd/zns-udp.socket:
--------------------------------------------------------------------------------
 1 | [Unit]
 2 | Description=zns udp socket
 3 | 
 4 | [Socket]
 5 | ListenDatagram=443
 6 | BindIPv6Only=both
 7 | FileDescriptorName=h3
 8 | Service=zns.service
 9 | 
10 | [Install]
11 | WantedBy=sockets.target
12 | 


--------------------------------------------------------------------------------
/misc/systemd/zns.service:
--------------------------------------------------------------------------------
 1 | [Unit]
 2 | Description=zns service
 3 | After=network.target
 4 | Requires=zns-tcp.socket zns-udp.socket
 5 | 
 6 | [Service]
 7 | LimitNOFILE=8192
 8 | EnvironmentFile=/usr/local/etc/zns/env
 9 | ExecStart=/usr/local/bin/zns -root /var/lib/zns/www -tls-hosts zns.nu.mk -db /var/lib/zns/zns.db
10 | ExecReload=/bin/kill -HUP $MAINPID
11 | User=www-data
12 | Group=www-data
13 | KillMode=process
14 | Restart=on-failure
15 | 
16 | [Install]
17 | WantedBy=multi-user.target
18 | 


--------------------------------------------------------------------------------
/pay.go:
--------------------------------------------------------------------------------
 1 | package zns
 2 | 
 3 | import (
 4 | 	"context"
 5 | 	"fmt"
 6 | 	"net/http"
 7 | 
 8 | 	"github.com/smartwalle/alipay/v3"
 9 | )
10 | 
11 | type Pay interface {
12 | 	NewQR(order Order, notifyURL string) (string, error)
13 | 	OnPay(req *http.Request) (Order, error)
14 | }
15 | 
16 | func NewPay(appID, privateKey, publicKey string) Pay {
17 | 	client, err := alipay.New(appID, privateKey, true)
18 | 	if err != nil {
19 | 		panic(err)
20 | 	}
21 | 
22 | 	if err = client.LoadAliPayPublicKey(publicKey); err != nil {
23 | 		panic(err)
24 | 	}
25 | 
26 | 	return aliPay{ali: client}
27 | }
28 | 
29 | type Order struct {
30 | 	OrderNo string
31 | 	Amount  string
32 | 	TradeNo string
33 | }
34 | 
35 | type aliPay struct {
36 | 	ali *alipay.Client
37 | }
38 | 
39 | func (p aliPay) NewQR(order Order, notifyURL string) (string, error) {
40 | 	r, err := p.ali.TradePreCreate(context.TODO(), alipay.TradePreCreate{
41 | 		Trade: alipay.Trade{
42 | 			NotifyURL:      notifyURL,
43 | 			Subject:        "ZNS Ticket",
44 | 			OutTradeNo:     order.OrderNo,
45 | 			TotalAmount:    order.Amount,
46 | 			TimeoutExpress: "15m",
47 | 		},
48 | 	})
49 | 	if err != nil {
50 | 		return "", err
51 | 	}
52 | 
53 | 	if r.Code != alipay.CodeSuccess {
54 | 		return "", fmt.Errorf("TradePreCreate error: %w", err)
55 | 	}
56 | 
57 | 	return r.QRCode, nil
58 | }
59 | 
60 | func (p aliPay) OnPay(req *http.Request) (o Order, err error) {
61 | 	n, err := p.ali.GetTradeNotification(req)
62 | 	if err != nil {
63 | 		return
64 | 	}
65 | 
66 | 	o.OrderNo = n.OutTradeNo
67 | 	o.TradeNo = n.TradeNo
68 | 	o.Amount = n.ReceiptAmount
69 | 
70 | 	return
71 | }
72 | 


--------------------------------------------------------------------------------
/ticket.go:
--------------------------------------------------------------------------------
  1 | package zns
  2 | 
  3 | import (
  4 | 	"crypto/rand"
  5 | 	"database/sql"
  6 | 	"encoding/base64"
  7 | 	"encoding/json"
  8 | 	"errors"
  9 | 	"net/http"
 10 | 	"strconv"
 11 | 	"strings"
 12 | 	"time"
 13 | 
 14 | 	"github.com/go-kiss/sqlx"
 15 | 	"modernc.org/sqlite"
 16 | )
 17 | 
 18 | type Ticket struct {
 19 | 	ID         int    `db:"id" json:"id"`
 20 | 	Token      string `db:"token" json:"-"`
 21 | 	Bytes      int    `db:"bytes" json:"bytes"`
 22 | 	TotalBytes int    `db:"total_bytes" json:"total_bytes"`
 23 | 	PayOrder   string `db:"pay_order" json:"pay_order"`
 24 | 	BuyOrder   string `db:"buy_order" json:"buy_order"`
 25 | 
 26 | 	Created time.Time `db:"created" json:"created"`
 27 | 	Updated time.Time `db:"updated" json:"updated"`
 28 | 	Expires time.Time `db:"expires" json:"expires"`
 29 | }
 30 | 
 31 | func (_ *Ticket) KeyName() string   { return "id" }
 32 | func (_ *Ticket) TableName() string { return "tickets" }
 33 | func (t *Ticket) Schema() string {
 34 | 	return "CREATE TABLE IF NOT EXISTS " + t.TableName() + `(
 35 | 	` + t.KeyName() + ` INTEGER PRIMARY KEY AUTOINCREMENT,
 36 | 	token TEXT,
 37 | 	bytes INTEGER,
 38 | 	total_bytes INTEGER,
 39 | 	pay_order TEXT,
 40 | 	buy_order TEXT,
 41 | 	created DATETIME,
 42 | 	updated DATETIME,
 43 | 	expires DATETIME
 44 | );
 45 | 	CREATE INDEX IF NOT EXISTS t_token_expires ON ` + t.TableName() + `(token, expires);
 46 | 	CREATE UNIQUE INDEX IF NOT EXISTS t_pay_order ON ` + t.TableName() + `(pay_order);`
 47 | }
 48 | 
 49 | type TicketRepo interface {
 50 | 	// New create and save one Ticket
 51 | 	New(token string, bytes int, trade string, order string) error
 52 | 	// Cost decreases  bytes of one Ticket
 53 | 	Cost(token string, bytes int) error
 54 | 	// List fetches all current Tickets with bytes available.
 55 | 	List(token string, limit int) ([]Ticket, error)
 56 | }
 57 | 
 58 | func NewTicketRepo(path string) TicketRepo {
 59 | 	db, err := sqlx.Connect("sqlite", path)
 60 | 	if err != nil {
 61 | 		panic(err)
 62 | 	}
 63 | 	db.SetMaxOpenConns(1)
 64 | 	r := sqliteTicketReop{db: db}
 65 | 	r.Init()
 66 | 	return r
 67 | }
 68 | 
 69 | type FreeTicketRepo struct{}
 70 | 
 71 | func (r FreeTicketRepo) New(token string, bytes int, trade, order string) error {
 72 | 	return nil
 73 | }
 74 | 
 75 | func (r FreeTicketRepo) Cost(token string, bytes int) error {
 76 | 	return nil
 77 | }
 78 | 
 79 | func (r FreeTicketRepo) List(token string, limit int) ([]Ticket, error) {
 80 | 	return []Ticket{{Bytes: 100}}, nil
 81 | }
 82 | 
 83 | type sqliteTicketReop struct {
 84 | 	db *sqlx.DB
 85 | }
 86 | 
 87 | func (r sqliteTicketReop) Init() {
 88 | 	if _, err := r.db.Exec((*Ticket).Schema(nil)); err != nil {
 89 | 		panic(err)
 90 | 	}
 91 | }
 92 | 
 93 | func (r sqliteTicketReop) New(token string, bytes int, trade, order string) error {
 94 | 	now := time.Now()
 95 | 
 96 | 	ts, err := r.List(token, 1)
 97 | 	if err != nil {
 98 | 		return err
 99 | 	}
100 | 
101 | 	t := Ticket{
102 | 		Token:      token,
103 | 		Bytes:      bytes,
104 | 		TotalBytes: bytes,
105 | 		PayOrder:   order,
106 | 		BuyOrder:   trade,
107 | 		Created:    now,
108 | 		Updated:    now,
109 | 	}
110 | 
111 | 	gb := bytes / 1024 / 1024 / 1024
112 | 	if gb == 0 {
113 | 		gb = 1
114 | 	}
115 | 	d := 30 * 24 * time.Hour * time.Duration(gb)
116 | 	if len(ts) == 1 && ts[0].Expires.After(now) {
117 | 		t.Expires = ts[0].Expires.Add(d)
118 | 	} else {
119 | 		t.Expires = now.Add(d)
120 | 	}
121 | 
122 | 	_, err = r.db.Insert(&t)
123 | 
124 | 	se := &sqlite.Error{}
125 | 	// constraint failed: UNIQUE constraint failed
126 | 	if errors.As(err, &se) && se.Code() == 2067 {
127 | 		return nil
128 | 	}
129 | 
130 | 	return err
131 | }
132 | 
133 | func (r sqliteTicketReop) Cost(token string, bytes int) error {
134 | 	now := time.Now()
135 | 
136 | 	sql := "update " + (*Ticket).TableName(nil) +
137 | 		" set bytes = bytes - ? where id in (select id from " + (*Ticket).TableName(nil) +
138 | 		" where token = ? and expires > ? order by id asc limit 1) and bytes >= ?"
139 | 
140 | 	_r, err := r.db.Exec(sql, bytes, token, now, bytes)
141 | 	if err != nil {
142 | 		return err
143 | 	}
144 | 	n, err := _r.RowsAffected()
145 | 	if err != nil {
146 | 		return err
147 | 	}
148 | 	if n == 1 {
149 | 		return nil
150 | 	}
151 | 
152 | 	return r.costSlow(token, bytes)
153 | }
154 | 
155 | func (r sqliteTicketReop) costSlow(token string, bytes int) error {
156 | 	q := "select * from " + (*Ticket).TableName(nil) +
157 | 		" where token = ? and bytes > 0 and expires > ?" +
158 | 		" order by id asc"
159 | 	var ts []Ticket
160 | 	if err := r.db.Select(&ts, q, token, time.Now()); err != nil {
161 | 		return err
162 | 	}
163 | 
164 | 	if len(ts) == 0 {
165 | 		return sql.ErrNoRows
166 | 	}
167 | 
168 | 	var i int
169 | 	var t Ticket
170 | 	for i, t = range ts {
171 | 		if t.Bytes >= bytes {
172 | 			ts[i].Bytes -= bytes
173 | 			bytes = 0
174 | 			break
175 | 		} else {
176 | 			bytes -= t.Bytes
177 | 			ts[i].Bytes = 0
178 | 		}
179 | 	}
180 | 
181 | 	if bytes > 0 {
182 | 		ts[i].Bytes -= bytes
183 | 	}
184 | 
185 | 	if i == 0 {
186 | 		t := ts[i]
187 | 		t.Updated = time.Now()
188 | 		_, err := r.db.Update(&t)
189 | 		return err
190 | 	}
191 | 
192 | 	tx, err := r.db.Beginx()
193 | 	if err != nil {
194 | 		return err
195 | 	}
196 | 
197 | 	for ; i >= 0; i-- {
198 | 		t := ts[i]
199 | 		t.Updated = time.Now()
200 | 		_, err := tx.Update(&t)
201 | 		if err != nil {
202 | 			tx.Rollback()
203 | 			return err
204 | 		}
205 | 	}
206 | 	return tx.Commit()
207 | }
208 | 
209 | func (r sqliteTicketReop) List(token string, limit int) (tickets []Ticket, err error) {
210 | 	sql := "select * from " + (*Ticket).TableName(nil) +
211 | 		" where token = ? order by id desc limit ?"
212 | 	err = r.db.Select(&tickets, sql, token, limit)
213 | 	return
214 | }
215 | 
216 | type TicketHandler struct {
217 | 	MBpCNY int
218 | 	Pay    Pay
219 | 	Repo   TicketRepo
220 | 	AltSvc string
221 | }
222 | 
223 | func (h *TicketHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
224 | 	if h.AltSvc != "" {
225 | 		w.Header().Set("Alt-Svc", h.AltSvc)
226 | 	}
227 | 
228 | 	if r.Method == http.MethodGet {
229 | 		token := r.PathValue("token")
230 | 		ts, err := h.Repo.List(token, 10)
231 | 		if err != nil {
232 | 			http.Error(w, err.Error(), http.StatusInternalServerError)
233 | 			return
234 | 		}
235 | 		w.Header().Add("content-type", "application/json")
236 | 		json.NewEncoder(w).Encode(ts)
237 | 		return
238 | 	}
239 | 
240 | 	if r.URL.Query().Get("buy") != "" {
241 | 		req := struct {
242 | 			Token string `json:"token"`
243 | 			Cents int    `json:"cents"`
244 | 		}{}
245 | 		defer r.Body.Close()
246 | 		err := json.NewDecoder(r.Body).Decode(&req)
247 | 		if err != nil {
248 | 			http.Error(w, err.Error(), http.StatusBadRequest)
249 | 			return
250 | 		}
251 | 
252 | 		if req.Cents < 100 {
253 | 			http.Error(w, "cents must > 100", http.StatusBadRequest)
254 | 			return
255 | 		}
256 | 
257 | 		if req.Token == "" {
258 | 			b := make([]byte, 16)
259 | 			_, err := rand.Read(b)
260 | 			if err != nil {
261 | 				http.Error(w, err.Error(), http.StatusInternalServerError)
262 | 				return
263 | 			}
264 | 			req.Token = base64.RawURLEncoding.EncodeToString(b)
265 | 		}
266 | 
267 | 		now := time.Now().Format(time.RFC3339)
268 | 		yuan := strconv.FormatFloat(float64(req.Cents)/100, 'f', 2, 64)
269 | 		o := Order{
270 | 			OrderNo: req.Token + "@" + now,
271 | 			Amount:  yuan,
272 | 		}
273 | 
274 | 		notify := "https://" + r.Host + r.URL.Path
275 | 		qr, err := h.Pay.NewQR(o, notify)
276 | 		if err != nil {
277 | 			http.Error(w, err.Error(), http.StatusInternalServerError)
278 | 			return
279 | 		}
280 | 
281 | 		w.Header().Add("content-type", "application/json")
282 | 		json.NewEncoder(w).Encode(struct {
283 | 			QR    string `json:"qr"`
284 | 			Token string `json:"token"`
285 | 			Order string `json:"order"`
286 | 		}{QR: qr, Token: req.Token, Order: o.OrderNo})
287 | 	} else {
288 | 		o, err := h.Pay.OnPay(r)
289 | 		if err != nil {
290 | 			http.Error(w, err.Error(), http.StatusBadRequest)
291 | 			return
292 | 		}
293 | 
294 | 		i := strings.Index(o.OrderNo, "@")
295 | 		token := o.OrderNo[:i]
296 | 
297 | 		yuan, err := strconv.ParseFloat(o.Amount, 64)
298 | 		if err != nil {
299 | 			http.Error(w, err.Error(), http.StatusBadRequest)
300 | 			return
301 | 		}
302 | 
303 | 		bytes := int(yuan * float64(h.MBpCNY) * 1024 * 1024)
304 | 
305 | 		err = h.Repo.New(token, bytes, o.OrderNo, o.TradeNo)
306 | 		if err != nil {
307 | 			http.Error(w, err.Error(), http.StatusInternalServerError)
308 | 			return
309 | 		}
310 | 
311 | 		w.Write([]byte("success"))
312 | 	}
313 | }
314 | 


--------------------------------------------------------------------------------
/ticket_test.go:
--------------------------------------------------------------------------------
  1 | package zns
  2 | 
  3 | import (
  4 | 	"testing"
  5 | 	"time"
  6 | 
  7 | 	"github.com/stretchr/testify/assert"
  8 | )
  9 | 
 10 | func TestRepo(t *testing.T) {
 11 | 	r := NewTicketRepo(":memory:")
 12 | 
 13 | 	err := r.New("foo", 100, "buy-1", "pay-1")
 14 | 	assert.Nil(t, err)
 15 | 
 16 | 	ts, err := r.List("foo", 2)
 17 | 	assert.Nil(t, err)
 18 | 	assert.Equal(t, 1, len(ts))
 19 | 	assert.Equal(t, "foo", ts[0].Token)
 20 | 	assert.Equal(t, 100, ts[0].Bytes)
 21 | 	assert.Equal(t, 100, ts[0].TotalBytes)
 22 | 	assert.Equal(t, "pay-1", ts[0].PayOrder)
 23 | 
 24 | 	n := time.Now()
 25 | 
 26 | 	assert.True(t, ts[0].Expires.Before(n.Add(30*24*time.Hour)))
 27 | 	assert.True(t, ts[0].Expires.After(n.Add(29*24*time.Hour)))
 28 | 	assert.Equal(t, ts[0].Created, ts[0].Updated)
 29 | 	assert.Equal(t, n.Truncate(time.Second), ts[0].Created.Truncate(time.Second))
 30 | 
 31 | 	err = r.Cost("foo", 50)
 32 | 	assert.Nil(t, err)
 33 | 
 34 | 	ts, err = r.List("foo", 2)
 35 | 	assert.Nil(t, err)
 36 | 	assert.Equal(t, 1, len(ts))
 37 | 	assert.Equal(t, 50, ts[0].Bytes)
 38 | 
 39 | 	err = r.New("foo", 30, "buy-2", "pay-2")
 40 | 	assert.Nil(t, err)
 41 | 
 42 | 	ts, err = r.List("foo", 2)
 43 | 	assert.Nil(t, err)
 44 | 	assert.Equal(t, 2, len(ts))
 45 | 	assert.True(t, ts[0].Expires.Equal(ts[1].Expires.Add(30*24*time.Hour)))
 46 | 
 47 | 	err = r.New("foo", 40, "buy-3", "pay-3")
 48 | 	assert.Nil(t, err)
 49 | 
 50 | 	err = r.Cost("foo", 110)
 51 | 	assert.Nil(t, err)
 52 | 
 53 | 	ts, err = r.List("foo", 4)
 54 | 	assert.Nil(t, err)
 55 | 	assert.Equal(t, 3, len(ts))
 56 | 	assert.Equal(t, 10, ts[0].Bytes)
 57 | 	assert.Equal(t, 0, ts[1].Bytes)
 58 | 	assert.Equal(t, 0, ts[2].Bytes)
 59 | 
 60 | 	err = r.Cost("foo", 20)
 61 | 	assert.Nil(t, err)
 62 | 
 63 | 	ts, err = r.List("foo", 1)
 64 | 	assert.Nil(t, err)
 65 | 	assert.Equal(t, -10, ts[0].Bytes)
 66 | 
 67 | 	err = r.New("foo", 40, "buy-4", "pay-4")
 68 | 	assert.Nil(t, err)
 69 | 
 70 | 	err = r.New("foo", 10, "buy-5", "pay-5")
 71 | 	assert.Nil(t, err)
 72 | 
 73 | 	err = r.Cost("foo", 65)
 74 | 	assert.Nil(t, err)
 75 | 
 76 | 	ts, err = r.List("foo", 1)
 77 | 	assert.Nil(t, err)
 78 | 	assert.Equal(t, -15, ts[0].Bytes)
 79 | 
 80 | 	err = r.New("foo", 3*1024*1024*1024, "buy-6", "pay-6")
 81 | 	assert.Nil(t, err)
 82 | 
 83 | 	ts, err = r.List("foo", 2)
 84 | 	assert.Nil(t, err)
 85 | 	assert.Equal(t, 3*1024*1024*1024, ts[0].Bytes)
 86 | 	assert.True(t, ts[0].Expires.Equal(ts[1].Expires.Add(3*30*24*time.Hour)))
 87 | }
 88 | 
 89 | func TestRepoSlow(t *testing.T) {
 90 | 	r := NewTicketRepo(":memory:")
 91 | 
 92 | 	err := r.New("foo", 10, "buy-1", "pay-1")
 93 | 	assert.Nil(t, err)
 94 | 
 95 | 	err = r.New("foo", 30, "buy-2", "pay-2")
 96 | 	assert.Nil(t, err)
 97 | 
 98 | 	err = r.Cost("foo", 20)
 99 | 	assert.Nil(t, err)
100 | 
101 | 	ts, err := r.List("foo", 3)
102 | 	assert.Nil(t, err)
103 | 	assert.Equal(t, 2, len(ts))
104 | 	assert.Equal(t, 20, ts[0].Bytes)
105 | 	assert.Equal(t, 0, ts[1].Bytes)
106 | }
107 | 


--------------------------------------------------------------------------------
/web/app.js:
--------------------------------------------------------------------------------
  1 | (() => {
  2 | const urlParams = new URLSearchParams(location.search);
  3 | let token = urlParams.get('token');
  4 | if (token) {
  5 |   document.location.href = '//' + document.domain + '/dns/' + token
  6 |   return
  7 | }
  8 | 
  9 | let m = document.location.pathname.match(/^\/dns\/(.+)$/)
 10 | token = (m && m[1]) || ""
 11 | 
 12 | $ = document.querySelector.bind(document);
 13 | 
 14 | $('#pay').onclick = (e) => {
 15 |   const y = $('#cents');
 16 |   const cents = Math.trunc(y.value * 100);
 17 |   if (cents < 100) {
 18 |     alert('最低一元钱起购');
 19 |     y.focus();
 20 |     return;
 21 |   }
 22 |   fetch('/ticket/?buy=1', {
 23 |     method: 'POST',
 24 |     headers: {
 25 |       'content-type': 'application/json',
 26 |     },
 27 |     body: JSON.stringify({cents: cents, token: token}),
 28 |   }).then((resp) => {
 29 |       resp.json().then((d) => {
 30 |         let qrcode = new QRCode($('#qr'), { width: 100, height: 100, useSVG: true });
 31 |         qrcode.makeCode(d.qr);
 32 | 
 33 |         let countdownX;
 34 |         let orderLoading = false;
 35 |         let countDownDate = new Date().getTime() + (15 * 60 * 1000);
 36 |         let updateCountdownX = () => {
 37 |           let now = new Date().getTime();
 38 |           let distance = countDownDate - now;
 39 | 
 40 |           if (distance < 0) {
 41 |             clearInterval(countdownX);
 42 |             $('#qr').innerHTML = '';
 43 |             $('#qr-msg').innerHTML = "订单已失效";
 44 |           }
 45 | 
 46 |           let minutes = Math.floor((distance % (1000 * 60 * 60)) / (1000 * 60));
 47 |           let seconds = Math.floor((distance % (1000 * 60)) / 1000);
 48 | 
 49 |           $('#qr-msg').innerHTML = minutes.toString().padStart(2, '0') + ":" + seconds.toString().padStart(2, '0');
 50 | 
 51 |           return seconds;
 52 |         };
 53 |         updateCountdownX();
 54 |         countdownX = setInterval(function() {
 55 |           let seconds = updateCountdownX();
 56 | 
 57 |           if (seconds%5 === 0 && !orderLoading) {
 58 |             orderLoading = true;
 59 |             fetch(`/ticket/${d.token}`).then((resp) => {
 60 |               resp.json().then((tickets) => {
 61 |                 if (!tickets) return;
 62 |                 if (tickets[0].buy_order != d.order) return;
 63 |                 document.location = `/dns/${d.token}`
 64 |               });
 65 |             }).finally(() => {
 66 |                 orderLoading = false;
 67 |               });;
 68 |           }
 69 |         }, 1000);
 70 |       });
 71 |     });
 72 | }
 73 | 
 74 | fetch(`/ticket/${token}`).then((resp) => {
 75 |   resp.json().then((tickets) => {
 76 |     if (!tickets) return;
 77 |     _ = document.createElement.bind(document);
 78 |     t = $('#tickets');
 79 |     t.style.display = 'table';
 80 | 
 81 |     $('#qr-msg').innerHTML = `你的专属 DoH 链接🔗 <span class="warn">(请勿在互联网上传播!)</span><div class="doh-url">https://${document.domain}/dns/${token}</div><div class="help">有问题请加电报群 <a href="https://t.me/letszns">https://t.me/letszns</a></div>`;
 82 |     let keyName = {
 83 |       "id":          "记录编号",
 84 |       "bytes":       "剩余流量",
 85 |       "total_bytes": "已购流量",
 86 |       "pay_order":   "支付订单",
 87 |       "buy_order":   "业务订单",
 88 |       "created":     "创建时间",
 89 |       "updated":     "更新时间",
 90 |       "expires":     "过期时间",
 91 |     };
 92 |     tickets.forEach((ticket) => {
 93 |       let isTime = ["created", "updated", "expires"];
 94 |       for ([key, value] of Object.entries(ticket)) {
 95 |         let tr = _('tr');
 96 |         let th = _('th');
 97 |         th.innerText = keyName[key] || key;
 98 |         let td = _('td');
 99 |         if (isTime.includes(key)) {
100 |           value = new Date(Date.parse(value));
101 |           value = value.toLocaleString();
102 |         }
103 |         td.innerText = value;
104 |         tr.appendChild(th);
105 |         tr.appendChild(td);
106 |         t.appendChild(tr);
107 |       }
108 |       let tr = _('tr');
109 |       tr.appendChild(_('hr'));
110 |       t.appendChild(tr);
111 |     });
112 |   });
113 | });
114 | })()
115 | 


--------------------------------------------------------------------------------
/web/index.html:
--------------------------------------------------------------------------------
 1 | <!doctype html>
 2 | <html lang="zh-CN">
 3 |   <head>
 4 |     <meta charset="utf-8">
 5 |     <meta name="viewport" content="user-scalable=no,
 6 |       initial-scale=1,
 7 |       maximum-scale=1,
 8 |       minimum-scale=1,
 9 |       width=device-width,
10 |       height=device-height">
11 |     <meta name="description" content="ZNS">
12 |     <meta name="referrer" content="same-origin">
13 |     <link rel="stylesheet" href="/style.css">
14 |   </head>
15 |   <body>
16 |     <h1>ZNS</h1>
17 |     <dl>
18 |       <dt>🔒保护隐私</dt>
19 |       <dd>仅保存订单号、余额等必要信息，不记录 DNS 查询行为。</dd>
20 |       <dt>🌐智能解析</dt>
21 |       <dd>基于 DoH + EDNS Client Subnet (ECS) 技术，海外域名无污染，国内域名无延迟。支持 DNS over HTTP/3 (DoH3) 协议！</dd>
22 |       <dt>👨‍💻开源社区</dt>
23 |       <dd>代码全部<a href="https://github.com/taoso/zns">开源</a>，MIT 授权协议，自由使用。</dd>
24 |       <dt>💰按量付费</dt>
25 |       <dd>一元 1GB 流量，30天有效；两元 2G 流量，60 天有效；以此类推。连续充值过期时间顺延。</dd>
26 |     </dl>
27 |     <input id="cents" type="number" placeholder="金额(元)" min="1">
28 |     <button id="pay">支付宝付款</button>
29 |     <div id="qr-msg"></div>
30 |     <div id="qr"></div>
31 |     <table id="tickets" style="display:none;">
32 |       <caption>最近购买记录</caption>
33 |     </table>
34 |   </body>
35 |   <script src="/qrcode.js"></script>
36 |   <script src="/app.js"></script>
37 | </html>
38 | 


--------------------------------------------------------------------------------
/web/qrcode.js:
--------------------------------------------------------------------------------
  1 | /**
  2 |  * @fileoverview
  3 |  * - Using the 'QRCode for Javascript library'
  4 |  * - Fixed dataset of 'QRCode for Javascript library' for support full-spec.
  5 |  * - this library has no dependencies.
  6 |  * 
  7 |  * @author davidshimjs
  8 |  * @see <a href="http://www.d-project.com/" target="_blank">http://www.d-project.com/</a>
  9 |  * @see <a href="http://jeromeetienne.github.com/jquery-qrcode/" target="_blank">http://jeromeetienne.github.com/jquery-qrcode/</a>
 10 |  */
 11 | var QRCode;
 12 | 
 13 | (function () {
 14 | 	//---------------------------------------------------------------------
 15 | 	// QRCode for JavaScript
 16 | 	//
 17 | 	// Copyright (c) 2009 Kazuhiko Arase
 18 | 	//
 19 | 	// URL: http://www.d-project.com/
 20 | 	//
 21 | 	// Licensed under the MIT license:
 22 | 	//   http://www.opensource.org/licenses/mit-license.php
 23 | 	//
 24 | 	// The word "QR Code" is registered trademark of 
 25 | 	// DENSO WAVE INCORPORATED
 26 | 	//   http://www.denso-wave.com/qrcode/faqpatent-e.html
 27 | 	//
 28 | 	//---------------------------------------------------------------------
 29 | 	function QR8bitByte(data) {
 30 | 		this.mode = QRMode.MODE_8BIT_BYTE;
 31 | 		this.data = data;
 32 | 		this.parsedData = [];
 33 | 
 34 | 		// Added to support UTF-8 Characters
 35 | 		for (var i = 0, l = this.data.length; i < l; i++) {
 36 | 			var byteArray = [];
 37 | 			var code = this.data.charCodeAt(i);
 38 | 
 39 | 			if (code > 0x10000) {
 40 | 				byteArray[0] = 0xF0 | ((code & 0x1C0000) >>> 18);
 41 | 				byteArray[1] = 0x80 | ((code & 0x3F000) >>> 12);
 42 | 				byteArray[2] = 0x80 | ((code & 0xFC0) >>> 6);
 43 | 				byteArray[3] = 0x80 | (code & 0x3F);
 44 | 			} else if (code > 0x800) {
 45 | 				byteArray[0] = 0xE0 | ((code & 0xF000) >>> 12);
 46 | 				byteArray[1] = 0x80 | ((code & 0xFC0) >>> 6);
 47 | 				byteArray[2] = 0x80 | (code & 0x3F);
 48 | 			} else if (code > 0x80) {
 49 | 				byteArray[0] = 0xC0 | ((code & 0x7C0) >>> 6);
 50 | 				byteArray[1] = 0x80 | (code & 0x3F);
 51 | 			} else {
 52 | 				byteArray[0] = code;
 53 | 			}
 54 | 
 55 | 			this.parsedData.push(byteArray);
 56 | 		}
 57 | 
 58 | 		this.parsedData = Array.prototype.concat.apply([], this.parsedData);
 59 | 
 60 | 		if (this.parsedData.length != this.data.length) {
 61 | 			this.parsedData.unshift(191);
 62 | 			this.parsedData.unshift(187);
 63 | 			this.parsedData.unshift(239);
 64 | 		}
 65 | 	}
 66 | 
 67 | 	QR8bitByte.prototype = {
 68 | 		getLength: function (buffer) {
 69 | 			return this.parsedData.length;
 70 | 		},
 71 | 		write: function (buffer) {
 72 | 			for (var i = 0, l = this.parsedData.length; i < l; i++) {
 73 | 				buffer.put(this.parsedData[i], 8);
 74 | 			}
 75 | 		}
 76 | 	};
 77 | 
 78 | 	function QRCodeModel(typeNumber, errorCorrectLevel) {
 79 | 		this.typeNumber = typeNumber;
 80 | 		this.errorCorrectLevel = errorCorrectLevel;
 81 | 		this.modules = null;
 82 | 		this.moduleCount = 0;
 83 | 		this.dataCache = null;
 84 | 		this.dataList = [];
 85 | 	}
 86 | 
 87 | 	QRCodeModel.prototype={addData:function(data){var newData=new QR8bitByte(data);this.dataList.push(newData);this.dataCache=null;},isDark:function(row,col){if(row<0||this.moduleCount<=row||col<0||this.moduleCount<=col){throw new Error(row+","+col);}
 88 | 	return this.modules[row][col];},getModuleCount:function(){return this.moduleCount;},make:function(){this.makeImpl(false,this.getBestMaskPattern());},makeImpl:function(test,maskPattern){this.moduleCount=this.typeNumber*4+17;this.modules=new Array(this.moduleCount);for(var row=0;row<this.moduleCount;row++){this.modules[row]=new Array(this.moduleCount);for(var col=0;col<this.moduleCount;col++){this.modules[row][col]=null;}}
 89 | 	this.setupPositionProbePattern(0,0);this.setupPositionProbePattern(this.moduleCount-7,0);this.setupPositionProbePattern(0,this.moduleCount-7);this.setupPositionAdjustPattern();this.setupTimingPattern();this.setupTypeInfo(test,maskPattern);if(this.typeNumber>=7){this.setupTypeNumber(test);}
 90 | 	if(this.dataCache==null){this.dataCache=QRCodeModel.createData(this.typeNumber,this.errorCorrectLevel,this.dataList);}
 91 | 	this.mapData(this.dataCache,maskPattern);},setupPositionProbePattern:function(row,col){for(var r=-1;r<=7;r++){if(row+r<=-1||this.moduleCount<=row+r)continue;for(var c=-1;c<=7;c++){if(col+c<=-1||this.moduleCount<=col+c)continue;if((0<=r&&r<=6&&(c==0||c==6))||(0<=c&&c<=6&&(r==0||r==6))||(2<=r&&r<=4&&2<=c&&c<=4)){this.modules[row+r][col+c]=true;}else{this.modules[row+r][col+c]=false;}}}},getBestMaskPattern:function(){var minLostPoint=0;var pattern=0;for(var i=0;i<8;i++){this.makeImpl(true,i);var lostPoint=QRUtil.getLostPoint(this);if(i==0||minLostPoint>lostPoint){minLostPoint=lostPoint;pattern=i;}}
 92 | 	return pattern;},createMovieClip:function(target_mc,instance_name,depth){var qr_mc=target_mc.createEmptyMovieClip(instance_name,depth);var cs=1;this.make();for(var row=0;row<this.modules.length;row++){var y=row*cs;for(var col=0;col<this.modules[row].length;col++){var x=col*cs;var dark=this.modules[row][col];if(dark){qr_mc.beginFill(0,100);qr_mc.moveTo(x,y);qr_mc.lineTo(x+cs,y);qr_mc.lineTo(x+cs,y+cs);qr_mc.lineTo(x,y+cs);qr_mc.endFill();}}}
 93 | 	return qr_mc;},setupTimingPattern:function(){for(var r=8;r<this.moduleCount-8;r++){if(this.modules[r][6]!=null){continue;}
 94 | 	this.modules[r][6]=(r%2==0);}
 95 | 	for(var c=8;c<this.moduleCount-8;c++){if(this.modules[6][c]!=null){continue;}
 96 | 	this.modules[6][c]=(c%2==0);}},setupPositionAdjustPattern:function(){var pos=QRUtil.getPatternPosition(this.typeNumber);for(var i=0;i<pos.length;i++){for(var j=0;j<pos.length;j++){var row=pos[i];var col=pos[j];if(this.modules[row][col]!=null){continue;}
 97 | 	for(var r=-2;r<=2;r++){for(var c=-2;c<=2;c++){if(r==-2||r==2||c==-2||c==2||(r==0&&c==0)){this.modules[row+r][col+c]=true;}else{this.modules[row+r][col+c]=false;}}}}}},setupTypeNumber:function(test){var bits=QRUtil.getBCHTypeNumber(this.typeNumber);for(var i=0;i<18;i++){var mod=(!test&&((bits>>i)&1)==1);this.modules[Math.floor(i/3)][i%3+this.moduleCount-8-3]=mod;}
 98 | 	for(var i=0;i<18;i++){var mod=(!test&&((bits>>i)&1)==1);this.modules[i%3+this.moduleCount-8-3][Math.floor(i/3)]=mod;}},setupTypeInfo:function(test,maskPattern){var data=(this.errorCorrectLevel<<3)|maskPattern;var bits=QRUtil.getBCHTypeInfo(data);for(var i=0;i<15;i++){var mod=(!test&&((bits>>i)&1)==1);if(i<6){this.modules[i][8]=mod;}else if(i<8){this.modules[i+1][8]=mod;}else{this.modules[this.moduleCount-15+i][8]=mod;}}
 99 | 	for(var i=0;i<15;i++){var mod=(!test&&((bits>>i)&1)==1);if(i<8){this.modules[8][this.moduleCount-i-1]=mod;}else if(i<9){this.modules[8][15-i-1+1]=mod;}else{this.modules[8][15-i-1]=mod;}}
100 | 	this.modules[this.moduleCount-8][8]=(!test);},mapData:function(data,maskPattern){var inc=-1;var row=this.moduleCount-1;var bitIndex=7;var byteIndex=0;for(var col=this.moduleCount-1;col>0;col-=2){if(col==6)col--;while(true){for(var c=0;c<2;c++){if(this.modules[row][col-c]==null){var dark=false;if(byteIndex<data.length){dark=(((data[byteIndex]>>>bitIndex)&1)==1);}
101 | 	var mask=QRUtil.getMask(maskPattern,row,col-c);if(mask){dark=!dark;}
102 | 	this.modules[row][col-c]=dark;bitIndex--;if(bitIndex==-1){byteIndex++;bitIndex=7;}}}
103 | 	row+=inc;if(row<0||this.moduleCount<=row){row-=inc;inc=-inc;break;}}}}};QRCodeModel.PAD0=0xEC;QRCodeModel.PAD1=0x11;QRCodeModel.createData=function(typeNumber,errorCorrectLevel,dataList){var rsBlocks=QRRSBlock.getRSBlocks(typeNumber,errorCorrectLevel);var buffer=new QRBitBuffer();for(var i=0;i<dataList.length;i++){var data=dataList[i];buffer.put(data.mode,4);buffer.put(data.getLength(),QRUtil.getLengthInBits(data.mode,typeNumber));data.write(buffer);}
104 | 	var totalDataCount=0;for(var i=0;i<rsBlocks.length;i++){totalDataCount+=rsBlocks[i].dataCount;}
105 | 	if(buffer.getLengthInBits()>totalDataCount*8){throw new Error("code length overflow. ("
106 | 	+buffer.getLengthInBits()
107 | 	+">"
108 | 	+totalDataCount*8
109 | 	+")");}
110 | 	if(buffer.getLengthInBits()+4<=totalDataCount*8){buffer.put(0,4);}
111 | 	while(buffer.getLengthInBits()%8!=0){buffer.putBit(false);}
112 | 	while(true){if(buffer.getLengthInBits()>=totalDataCount*8){break;}
113 | 	buffer.put(QRCodeModel.PAD0,8);if(buffer.getLengthInBits()>=totalDataCount*8){break;}
114 | 	buffer.put(QRCodeModel.PAD1,8);}
115 | 	return QRCodeModel.createBytes(buffer,rsBlocks);};QRCodeModel.createBytes=function(buffer,rsBlocks){var offset=0;var maxDcCount=0;var maxEcCount=0;var dcdata=new Array(rsBlocks.length);var ecdata=new Array(rsBlocks.length);for(var r=0;r<rsBlocks.length;r++){var dcCount=rsBlocks[r].dataCount;var ecCount=rsBlocks[r].totalCount-dcCount;maxDcCount=Math.max(maxDcCount,dcCount);maxEcCount=Math.max(maxEcCount,ecCount);dcdata[r]=new Array(dcCount);for(var i=0;i<dcdata[r].length;i++){dcdata[r][i]=0xff&buffer.buffer[i+offset];}
116 | 	offset+=dcCount;var rsPoly=QRUtil.getErrorCorrectPolynomial(ecCount);var rawPoly=new QRPolynomial(dcdata[r],rsPoly.getLength()-1);var modPoly=rawPoly.mod(rsPoly);ecdata[r]=new Array(rsPoly.getLength()-1);for(var i=0;i<ecdata[r].length;i++){var modIndex=i+modPoly.getLength()-ecdata[r].length;ecdata[r][i]=(modIndex>=0)?modPoly.get(modIndex):0;}}
117 | 	var totalCodeCount=0;for(var i=0;i<rsBlocks.length;i++){totalCodeCount+=rsBlocks[i].totalCount;}
118 | 	var data=new Array(totalCodeCount);var index=0;for(var i=0;i<maxDcCount;i++){for(var r=0;r<rsBlocks.length;r++){if(i<dcdata[r].length){data[index++]=dcdata[r][i];}}}
119 | 	for(var i=0;i<maxEcCount;i++){for(var r=0;r<rsBlocks.length;r++){if(i<ecdata[r].length){data[index++]=ecdata[r][i];}}}
120 | 	return data;};var QRMode={MODE_NUMBER:1<<0,MODE_ALPHA_NUM:1<<1,MODE_8BIT_BYTE:1<<2,MODE_KANJI:1<<3};var QRErrorCorrectLevel={L:1,M:0,Q:3,H:2};var QRMaskPattern={PATTERN000:0,PATTERN001:1,PATTERN010:2,PATTERN011:3,PATTERN100:4,PATTERN101:5,PATTERN110:6,PATTERN111:7};var QRUtil={PATTERN_POSITION_TABLE:[[],[6,18],[6,22],[6,26],[6,30],[6,34],[6,22,38],[6,24,42],[6,26,46],[6,28,50],[6,30,54],[6,32,58],[6,34,62],[6,26,46,66],[6,26,48,70],[6,26,50,74],[6,30,54,78],[6,30,56,82],[6,30,58,86],[6,34,62,90],[6,28,50,72,94],[6,26,50,74,98],[6,30,54,78,102],[6,28,54,80,106],[6,32,58,84,110],[6,30,58,86,114],[6,34,62,90,118],[6,26,50,74,98,122],[6,30,54,78,102,126],[6,26,52,78,104,130],[6,30,56,82,108,134],[6,34,60,86,112,138],[6,30,58,86,114,142],[6,34,62,90,118,146],[6,30,54,78,102,126,150],[6,24,50,76,102,128,154],[6,28,54,80,106,132,158],[6,32,58,84,110,136,162],[6,26,54,82,110,138,166],[6,30,58,86,114,142,170]],G15:(1<<10)|(1<<8)|(1<<5)|(1<<4)|(1<<2)|(1<<1)|(1<<0),G18:(1<<12)|(1<<11)|(1<<10)|(1<<9)|(1<<8)|(1<<5)|(1<<2)|(1<<0),G15_MASK:(1<<14)|(1<<12)|(1<<10)|(1<<4)|(1<<1),getBCHTypeInfo:function(data){var d=data<<10;while(QRUtil.getBCHDigit(d)-QRUtil.getBCHDigit(QRUtil.G15)>=0){d^=(QRUtil.G15<<(QRUtil.getBCHDigit(d)-QRUtil.getBCHDigit(QRUtil.G15)));}
121 | 	return((data<<10)|d)^QRUtil.G15_MASK;},getBCHTypeNumber:function(data){var d=data<<12;while(QRUtil.getBCHDigit(d)-QRUtil.getBCHDigit(QRUtil.G18)>=0){d^=(QRUtil.G18<<(QRUtil.getBCHDigit(d)-QRUtil.getBCHDigit(QRUtil.G18)));}
122 | 	return(data<<12)|d;},getBCHDigit:function(data){var digit=0;while(data!=0){digit++;data>>>=1;}
123 | 	return digit;},getPatternPosition:function(typeNumber){return QRUtil.PATTERN_POSITION_TABLE[typeNumber-1];},getMask:function(maskPattern,i,j){switch(maskPattern){case QRMaskPattern.PATTERN000:return(i+j)%2==0;case QRMaskPattern.PATTERN001:return i%2==0;case QRMaskPattern.PATTERN010:return j%3==0;case QRMaskPattern.PATTERN011:return(i+j)%3==0;case QRMaskPattern.PATTERN100:return(Math.floor(i/2)+Math.floor(j/3))%2==0;case QRMaskPattern.PATTERN101:return(i*j)%2+(i*j)%3==0;case QRMaskPattern.PATTERN110:return((i*j)%2+(i*j)%3)%2==0;case QRMaskPattern.PATTERN111:return((i*j)%3+(i+j)%2)%2==0;default:throw new Error("bad maskPattern:"+maskPattern);}},getErrorCorrectPolynomial:function(errorCorrectLength){var a=new QRPolynomial([1],0);for(var i=0;i<errorCorrectLength;i++){a=a.multiply(new QRPolynomial([1,QRMath.gexp(i)],0));}
124 | 	return a;},getLengthInBits:function(mode,type){if(1<=type&&type<10){switch(mode){case QRMode.MODE_NUMBER:return 10;case QRMode.MODE_ALPHA_NUM:return 9;case QRMode.MODE_8BIT_BYTE:return 8;case QRMode.MODE_KANJI:return 8;default:throw new Error("mode:"+mode);}}else if(type<27){switch(mode){case QRMode.MODE_NUMBER:return 12;case QRMode.MODE_ALPHA_NUM:return 11;case QRMode.MODE_8BIT_BYTE:return 16;case QRMode.MODE_KANJI:return 10;default:throw new Error("mode:"+mode);}}else if(type<41){switch(mode){case QRMode.MODE_NUMBER:return 14;case QRMode.MODE_ALPHA_NUM:return 13;case QRMode.MODE_8BIT_BYTE:return 16;case QRMode.MODE_KANJI:return 12;default:throw new Error("mode:"+mode);}}else{throw new Error("type:"+type);}},getLostPoint:function(qrCode){var moduleCount=qrCode.getModuleCount();var lostPoint=0;for(var row=0;row<moduleCount;row++){for(var col=0;col<moduleCount;col++){var sameCount=0;var dark=qrCode.isDark(row,col);for(var r=-1;r<=1;r++){if(row+r<0||moduleCount<=row+r){continue;}
125 | 	for(var c=-1;c<=1;c++){if(col+c<0||moduleCount<=col+c){continue;}
126 | 	if(r==0&&c==0){continue;}
127 | 	if(dark==qrCode.isDark(row+r,col+c)){sameCount++;}}}
128 | 	if(sameCount>5){lostPoint+=(3+sameCount-5);}}}
129 | 	for(var row=0;row<moduleCount-1;row++){for(var col=0;col<moduleCount-1;col++){var count=0;if(qrCode.isDark(row,col))count++;if(qrCode.isDark(row+1,col))count++;if(qrCode.isDark(row,col+1))count++;if(qrCode.isDark(row+1,col+1))count++;if(count==0||count==4){lostPoint+=3;}}}
130 | 	for(var row=0;row<moduleCount;row++){for(var col=0;col<moduleCount-6;col++){if(qrCode.isDark(row,col)&&!qrCode.isDark(row,col+1)&&qrCode.isDark(row,col+2)&&qrCode.isDark(row,col+3)&&qrCode.isDark(row,col+4)&&!qrCode.isDark(row,col+5)&&qrCode.isDark(row,col+6)){lostPoint+=40;}}}
131 | 	for(var col=0;col<moduleCount;col++){for(var row=0;row<moduleCount-6;row++){if(qrCode.isDark(row,col)&&!qrCode.isDark(row+1,col)&&qrCode.isDark(row+2,col)&&qrCode.isDark(row+3,col)&&qrCode.isDark(row+4,col)&&!qrCode.isDark(row+5,col)&&qrCode.isDark(row+6,col)){lostPoint+=40;}}}
132 | 	var darkCount=0;for(var col=0;col<moduleCount;col++){for(var row=0;row<moduleCount;row++){if(qrCode.isDark(row,col)){darkCount++;}}}
133 | 	var ratio=Math.abs(100*darkCount/moduleCount/moduleCount-50)/5;lostPoint+=ratio*10;return lostPoint;}};var QRMath={glog:function(n){if(n<1){throw new Error("glog("+n+")");}
134 | 	return QRMath.LOG_TABLE[n];},gexp:function(n){while(n<0){n+=255;}
135 | 	while(n>=256){n-=255;}
136 | 	return QRMath.EXP_TABLE[n];},EXP_TABLE:new Array(256),LOG_TABLE:new Array(256)};for(var i=0;i<8;i++){QRMath.EXP_TABLE[i]=1<<i;}
137 | 	for(var i=8;i<256;i++){QRMath.EXP_TABLE[i]=QRMath.EXP_TABLE[i-4]^QRMath.EXP_TABLE[i-5]^QRMath.EXP_TABLE[i-6]^QRMath.EXP_TABLE[i-8];}
138 | 	for(var i=0;i<255;i++){QRMath.LOG_TABLE[QRMath.EXP_TABLE[i]]=i;}
139 | 	function QRPolynomial(num,shift){if(num.length==undefined){throw new Error(num.length+"/"+shift);}
140 | 	var offset=0;while(offset<num.length&&num[offset]==0){offset++;}
141 | 	this.num=new Array(num.length-offset+shift);for(var i=0;i<num.length-offset;i++){this.num[i]=num[i+offset];}}
142 | 	QRPolynomial.prototype={get:function(index){return this.num[index];},getLength:function(){return this.num.length;},multiply:function(e){var num=new Array(this.getLength()+e.getLength()-1);for(var i=0;i<this.getLength();i++){for(var j=0;j<e.getLength();j++){num[i+j]^=QRMath.gexp(QRMath.glog(this.get(i))+QRMath.glog(e.get(j)));}}
143 | 	return new QRPolynomial(num,0);},mod:function(e){if(this.getLength()-e.getLength()<0){return this;}
144 | 	var ratio=QRMath.glog(this.get(0))-QRMath.glog(e.get(0));var num=new Array(this.getLength());for(var i=0;i<this.getLength();i++){num[i]=this.get(i);}
145 | 	for(var i=0;i<e.getLength();i++){num[i]^=QRMath.gexp(QRMath.glog(e.get(i))+ratio);}
146 | 	return new QRPolynomial(num,0).mod(e);}};function QRRSBlock(totalCount,dataCount){this.totalCount=totalCount;this.dataCount=dataCount;}
147 | 	QRRSBlock.RS_BLOCK_TABLE=[[1,26,19],[1,26,16],[1,26,13],[1,26,9],[1,44,34],[1,44,28],[1,44,22],[1,44,16],[1,70,55],[1,70,44],[2,35,17],[2,35,13],[1,100,80],[2,50,32],[2,50,24],[4,25,9],[1,134,108],[2,67,43],[2,33,15,2,34,16],[2,33,11,2,34,12],[2,86,68],[4,43,27],[4,43,19],[4,43,15],[2,98,78],[4,49,31],[2,32,14,4,33,15],[4,39,13,1,40,14],[2,121,97],[2,60,38,2,61,39],[4,40,18,2,41,19],[4,40,14,2,41,15],[2,146,116],[3,58,36,2,59,37],[4,36,16,4,37,17],[4,36,12,4,37,13],[2,86,68,2,87,69],[4,69,43,1,70,44],[6,43,19,2,44,20],[6,43,15,2,44,16],[4,101,81],[1,80,50,4,81,51],[4,50,22,4,51,23],[3,36,12,8,37,13],[2,116,92,2,117,93],[6,58,36,2,59,37],[4,46,20,6,47,21],[7,42,14,4,43,15],[4,133,107],[8,59,37,1,60,38],[8,44,20,4,45,21],[12,33,11,4,34,12],[3,145,115,1,146,116],[4,64,40,5,65,41],[11,36,16,5,37,17],[11,36,12,5,37,13],[5,109,87,1,110,88],[5,65,41,5,66,42],[5,54,24,7,55,25],[11,36,12],[5,122,98,1,123,99],[7,73,45,3,74,46],[15,43,19,2,44,20],[3,45,15,13,46,16],[1,135,107,5,136,108],[10,74,46,1,75,47],[1,50,22,15,51,23],[2,42,14,17,43,15],[5,150,120,1,151,121],[9,69,43,4,70,44],[17,50,22,1,51,23],[2,42,14,19,43,15],[3,141,113,4,142,114],[3,70,44,11,71,45],[17,47,21,4,48,22],[9,39,13,16,40,14],[3,135,107,5,136,108],[3,67,41,13,68,42],[15,54,24,5,55,25],[15,43,15,10,44,16],[4,144,116,4,145,117],[17,68,42],[17,50,22,6,51,23],[19,46,16,6,47,17],[2,139,111,7,140,112],[17,74,46],[7,54,24,16,55,25],[34,37,13],[4,151,121,5,152,122],[4,75,47,14,76,48],[11,54,24,14,55,25],[16,45,15,14,46,16],[6,147,117,4,148,118],[6,73,45,14,74,46],[11,54,24,16,55,25],[30,46,16,2,47,17],[8,132,106,4,133,107],[8,75,47,13,76,48],[7,54,24,22,55,25],[22,45,15,13,46,16],[10,142,114,2,143,115],[19,74,46,4,75,47],[28,50,22,6,51,23],[33,46,16,4,47,17],[8,152,122,4,153,123],[22,73,45,3,74,46],[8,53,23,26,54,24],[12,45,15,28,46,16],[3,147,117,10,148,118],[3,73,45,23,74,46],[4,54,24,31,55,25],[11,45,15,31,46,16],[7,146,116,7,147,117],[21,73,45,7,74,46],[1,53,23,37,54,24],[19,45,15,26,46,16],[5,145,115,10,146,116],[19,75,47,10,76,48],[15,54,24,25,55,25],[23,45,15,25,46,16],[13,145,115,3,146,116],[2,74,46,29,75,47],[42,54,24,1,55,25],[23,45,15,28,46,16],[17,145,115],[10,74,46,23,75,47],[10,54,24,35,55,25],[19,45,15,35,46,16],[17,145,115,1,146,116],[14,74,46,21,75,47],[29,54,24,19,55,25],[11,45,15,46,46,16],[13,145,115,6,146,116],[14,74,46,23,75,47],[44,54,24,7,55,25],[59,46,16,1,47,17],[12,151,121,7,152,122],[12,75,47,26,76,48],[39,54,24,14,55,25],[22,45,15,41,46,16],[6,151,121,14,152,122],[6,75,47,34,76,48],[46,54,24,10,55,25],[2,45,15,64,46,16],[17,152,122,4,153,123],[29,74,46,14,75,47],[49,54,24,10,55,25],[24,45,15,46,46,16],[4,152,122,18,153,123],[13,74,46,32,75,47],[48,54,24,14,55,25],[42,45,15,32,46,16],[20,147,117,4,148,118],[40,75,47,7,76,48],[43,54,24,22,55,25],[10,45,15,67,46,16],[19,148,118,6,149,119],[18,75,47,31,76,48],[34,54,24,34,55,25],[20,45,15,61,46,16]];QRRSBlock.getRSBlocks=function(typeNumber,errorCorrectLevel){var rsBlock=QRRSBlock.getRsBlockTable(typeNumber,errorCorrectLevel);if(rsBlock==undefined){throw new Error("bad rs block @ typeNumber:"+typeNumber+"/errorCorrectLevel:"+errorCorrectLevel);}
148 | 	var length=rsBlock.length/3;var list=[];for(var i=0;i<length;i++){var count=rsBlock[i*3+0];var totalCount=rsBlock[i*3+1];var dataCount=rsBlock[i*3+2];for(var j=0;j<count;j++){list.push(new QRRSBlock(totalCount,dataCount));}}
149 | 	return list;};QRRSBlock.getRsBlockTable=function(typeNumber,errorCorrectLevel){switch(errorCorrectLevel){case QRErrorCorrectLevel.L:return QRRSBlock.RS_BLOCK_TABLE[(typeNumber-1)*4+0];case QRErrorCorrectLevel.M:return QRRSBlock.RS_BLOCK_TABLE[(typeNumber-1)*4+1];case QRErrorCorrectLevel.Q:return QRRSBlock.RS_BLOCK_TABLE[(typeNumber-1)*4+2];case QRErrorCorrectLevel.H:return QRRSBlock.RS_BLOCK_TABLE[(typeNumber-1)*4+3];default:return undefined;}};function QRBitBuffer(){this.buffer=[];this.length=0;}
150 | 	QRBitBuffer.prototype={get:function(index){var bufIndex=Math.floor(index/8);return((this.buffer[bufIndex]>>>(7-index%8))&1)==1;},put:function(num,length){for(var i=0;i<length;i++){this.putBit(((num>>>(length-i-1))&1)==1);}},getLengthInBits:function(){return this.length;},putBit:function(bit){var bufIndex=Math.floor(this.length/8);if(this.buffer.length<=bufIndex){this.buffer.push(0);}
151 | 	if(bit){this.buffer[bufIndex]|=(0x80>>>(this.length%8));}
152 | 	this.length++;}};var QRCodeLimitLength=[[17,14,11,7],[32,26,20,14],[53,42,32,24],[78,62,46,34],[106,84,60,44],[134,106,74,58],[154,122,86,64],[192,152,108,84],[230,180,130,98],[271,213,151,119],[321,251,177,137],[367,287,203,155],[425,331,241,177],[458,362,258,194],[520,412,292,220],[586,450,322,250],[644,504,364,280],[718,560,394,310],[792,624,442,338],[858,666,482,382],[929,711,509,403],[1003,779,565,439],[1091,857,611,461],[1171,911,661,511],[1273,997,715,535],[1367,1059,751,593],[1465,1125,805,625],[1528,1190,868,658],[1628,1264,908,698],[1732,1370,982,742],[1840,1452,1030,790],[1952,1538,1112,842],[2068,1628,1168,898],[2188,1722,1228,958],[2303,1809,1283,983],[2431,1911,1351,1051],[2563,1989,1423,1093],[2699,2099,1499,1139],[2809,2213,1579,1219],[2953,2331,1663,1273]];
153 | 	
154 | 	function _isSupportCanvas() {
155 | 		return typeof CanvasRenderingContext2D != "undefined";
156 | 	}
157 | 	
158 | 	// android 2.x doesn't support Data-URI spec
159 | 	function _getAndroid() {
160 | 		var android = false;
161 | 		var sAgent = navigator.userAgent;
162 | 		
163 | 		if (/android/i.test(sAgent)) { // android
164 | 			android = true;
165 | 			var aMat = sAgent.toString().match(/android ([0-9]\.[0-9])/i);
166 | 			
167 | 			if (aMat && aMat[1]) {
168 | 				android = parseFloat(aMat[1]);
169 | 			}
170 | 		}
171 | 		
172 | 		return android;
173 | 	}
174 | 	
175 | 	var svgDrawer = (function() {
176 | 
177 | 		var Drawing = function (el, htOption) {
178 | 			this._el = el;
179 | 			this._htOption = htOption;
180 | 		};
181 | 
182 | 		Drawing.prototype.draw = function (oQRCode) {
183 | 			var _htOption = this._htOption;
184 | 			var _el = this._el;
185 | 			var nCount = oQRCode.getModuleCount();
186 | 			var nWidth = Math.floor(_htOption.width / nCount);
187 | 			var nHeight = Math.floor(_htOption.height / nCount);
188 | 
189 | 			this.clear();
190 | 
191 | 			function makeSVG(tag, attrs) {
192 | 				var el = document.createElementNS('http://www.w3.org/2000/svg', tag);
193 | 				for (var k in attrs)
194 | 					if (attrs.hasOwnProperty(k)) el.setAttribute(k, attrs[k]);
195 | 				return el;
196 | 			}
197 | 
198 | 			var svg = makeSVG("svg" , {'viewBox': '0 0 ' + String(nCount) + " " + String(nCount), 'width': '100%', 'height': '100%', 'fill': _htOption.colorLight});
199 | 			svg.setAttributeNS("http://www.w3.org/2000/xmlns/", "xmlns:xlink", "http://www.w3.org/1999/xlink");
200 | 			_el.appendChild(svg);
201 | 
202 | 			svg.appendChild(makeSVG("rect", {"fill": _htOption.colorLight, "width": "100%", "height": "100%"}));
203 | 			svg.appendChild(makeSVG("rect", {"fill": _htOption.colorDark, "width": "1", "height": "1", "id": "template"}));
204 | 
205 | 			for (var row = 0; row < nCount; row++) {
206 | 				for (var col = 0; col < nCount; col++) {
207 | 					if (oQRCode.isDark(row, col)) {
208 | 						var child = makeSVG("use", {"x": String(col), "y": String(row)});
209 | 						child.setAttributeNS("http://www.w3.org/1999/xlink", "href", "#template")
210 | 						svg.appendChild(child);
211 | 					}
212 | 				}
213 | 			}
214 | 		};
215 | 		Drawing.prototype.clear = function () {
216 | 			while (this._el.hasChildNodes())
217 | 				this._el.removeChild(this._el.lastChild);
218 | 		};
219 | 		return Drawing;
220 | 	})();
221 | 
222 | 	var useSVG = document.documentElement.tagName.toLowerCase() === "svg";
223 | 
224 | 	// Drawing in DOM by using Table tag
225 | 	var Drawing = useSVG ? svgDrawer : !_isSupportCanvas() ? (function () {
226 | 		var Drawing = function (el, htOption) {
227 | 			this._el = el;
228 | 			this._htOption = htOption;
229 | 		};
230 | 			
231 | 		/**
232 | 		 * Draw the QRCode
233 | 		 * 
234 | 		 * @param {QRCode} oQRCode
235 | 		 */
236 | 		Drawing.prototype.draw = function (oQRCode) {
237 |             var _htOption = this._htOption;
238 |             var _el = this._el;
239 | 			var nCount = oQRCode.getModuleCount();
240 | 			var nWidth = Math.floor(_htOption.width / nCount);
241 | 			var nHeight = Math.floor(_htOption.height / nCount);
242 | 			var aHTML = ['<table style="border:0;border-collapse:collapse;">'];
243 | 			
244 | 			for (var row = 0; row < nCount; row++) {
245 | 				aHTML.push('<tr>');
246 | 				
247 | 				for (var col = 0; col < nCount; col++) {
248 | 					aHTML.push('<td style="border:0;border-collapse:collapse;padding:0;margin:0;width:' + nWidth + 'px;height:' + nHeight + 'px;background-color:' + (oQRCode.isDark(row, col) ? _htOption.colorDark : _htOption.colorLight) + ';"></td>');
249 | 				}
250 | 				
251 | 				aHTML.push('</tr>');
252 | 			}
253 | 			
254 | 			aHTML.push('</table>');
255 | 			_el.innerHTML = aHTML.join('');
256 | 			
257 | 			// Fix the margin values as real size.
258 | 			var elTable = _el.childNodes[0];
259 | 			var nLeftMarginTable = (_htOption.width - elTable.offsetWidth) / 2;
260 | 			var nTopMarginTable = (_htOption.height - elTable.offsetHeight) / 2;
261 | 			
262 | 			if (nLeftMarginTable > 0 && nTopMarginTable > 0) {
263 | 				elTable.style.margin = nTopMarginTable + "px " + nLeftMarginTable + "px";	
264 | 			}
265 | 		};
266 | 		
267 | 		/**
268 | 		 * Clear the QRCode
269 | 		 */
270 | 		Drawing.prototype.clear = function () {
271 | 			this._el.innerHTML = '';
272 | 		};
273 | 		
274 | 		return Drawing;
275 | 	})() : (function () { // Drawing in Canvas
276 | 		function _onMakeImage() {
277 | 			this._elImage.src = this._elCanvas.toDataURL("image/png");
278 | 			this._elImage.style.display = "block";
279 | 			this._elCanvas.style.display = "none";			
280 | 		}
281 | 		
282 | 		// Android 2.1 bug workaround
283 | 		// http://code.google.com/p/android/issues/detail?id=5141
284 | 		if (this._android && this._android <= 2.1) {
285 | 	    	var factor = 1 / window.devicePixelRatio;
286 | 	        var drawImage = CanvasRenderingContext2D.prototype.drawImage; 
287 | 	    	CanvasRenderingContext2D.prototype.drawImage = function (image, sx, sy, sw, sh, dx, dy, dw, dh) {
288 | 	    		if (("nodeName" in image) && /img/i.test(image.nodeName)) {
289 | 		        	for (var i = arguments.length - 1; i >= 1; i--) {
290 | 		            	arguments[i] = arguments[i] * factor;
291 | 		        	}
292 | 	    		} else if (typeof dw == "undefined") {
293 | 	    			arguments[1] *= factor;
294 | 	    			arguments[2] *= factor;
295 | 	    			arguments[3] *= factor;
296 | 	    			arguments[4] *= factor;
297 | 	    		}
298 | 	    		
299 | 	        	drawImage.apply(this, arguments); 
300 | 	    	};
301 | 		}
302 | 		
303 | 		/**
304 | 		 * Check whether the user's browser supports Data URI or not
305 | 		 * 
306 | 		 * @private
307 | 		 * @param {Function} fSuccess Occurs if it supports Data URI
308 | 		 * @param {Function} fFail Occurs if it doesn't support Data URI
309 | 		 */
310 | 		function _safeSetDataURI(fSuccess, fFail) {
311 |             var self = this;
312 |             self._fFail = fFail;
313 |             self._fSuccess = fSuccess;
314 | 
315 |             // Check it just once
316 |             if (self._bSupportDataURI === null) {
317 |                 var el = document.createElement("img");
318 |                 var fOnError = function() {
319 |                     self._bSupportDataURI = false;
320 | 
321 |                     if (self._fFail) {
322 |                         self._fFail.call(self);
323 |                     }
324 |                 };
325 |                 var fOnSuccess = function() {
326 |                     self._bSupportDataURI = true;
327 | 
328 |                     if (self._fSuccess) {
329 |                         self._fSuccess.call(self);
330 |                     }
331 |                 };
332 | 
333 |                 el.onabort = fOnError;
334 |                 el.onerror = fOnError;
335 |                 el.onload = fOnSuccess;
336 |                 el.src = "data:image/gif;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHwAAAABJRU5ErkJggg=="; // the Image contains 1px data.
337 |                 return;
338 |             } else if (self._bSupportDataURI === true && self._fSuccess) {
339 |                 self._fSuccess.call(self);
340 |             } else if (self._bSupportDataURI === false && self._fFail) {
341 |                 self._fFail.call(self);
342 |             }
343 | 		};
344 | 		
345 | 		/**
346 | 		 * Drawing QRCode by using canvas
347 | 		 * 
348 | 		 * @constructor
349 | 		 * @param {HTMLElement} el
350 | 		 * @param {Object} htOption QRCode Options 
351 | 		 */
352 | 		var Drawing = function (el, htOption) {
353 |     		this._bIsPainted = false;
354 |     		this._android = _getAndroid();
355 | 		
356 | 			this._htOption = htOption;
357 | 			this._elCanvas = document.createElement("canvas");
358 | 			this._elCanvas.width = htOption.width;
359 | 			this._elCanvas.height = htOption.height;
360 | 			el.appendChild(this._elCanvas);
361 | 			this._el = el;
362 | 			this._oContext = this._elCanvas.getContext("2d");
363 | 			this._bIsPainted = false;
364 | 			this._elImage = document.createElement("img");
365 | 			this._elImage.alt = "Scan me!";
366 | 			this._elImage.style.display = "none";
367 | 			this._el.appendChild(this._elImage);
368 | 			this._bSupportDataURI = null;
369 | 		};
370 | 			
371 | 		/**
372 | 		 * Draw the QRCode
373 | 		 * 
374 | 		 * @param {QRCode} oQRCode 
375 | 		 */
376 | 		Drawing.prototype.draw = function (oQRCode) {
377 |             var _elImage = this._elImage;
378 |             var _oContext = this._oContext;
379 |             var _htOption = this._htOption;
380 |             
381 | 			var nCount = oQRCode.getModuleCount();
382 | 			var nWidth = _htOption.width / nCount;
383 | 			var nHeight = _htOption.height / nCount;
384 | 			var nRoundedWidth = Math.round(nWidth);
385 | 			var nRoundedHeight = Math.round(nHeight);
386 | 
387 | 			_elImage.style.display = "none";
388 | 			this.clear();
389 | 			
390 | 			for (var row = 0; row < nCount; row++) {
391 | 				for (var col = 0; col < nCount; col++) {
392 | 					var bIsDark = oQRCode.isDark(row, col);
393 | 					var nLeft = col * nWidth;
394 | 					var nTop = row * nHeight;
395 | 					_oContext.strokeStyle = bIsDark ? _htOption.colorDark : _htOption.colorLight;
396 | 					_oContext.lineWidth = 1;
397 | 					_oContext.fillStyle = bIsDark ? _htOption.colorDark : _htOption.colorLight;					
398 | 					_oContext.fillRect(nLeft, nTop, nWidth, nHeight);
399 | 					
400 | 					// 안티 앨리어싱 방지 처리
401 | 					_oContext.strokeRect(
402 | 						Math.floor(nLeft) + 0.5,
403 | 						Math.floor(nTop) + 0.5,
404 | 						nRoundedWidth,
405 | 						nRoundedHeight
406 | 					);
407 | 					
408 | 					_oContext.strokeRect(
409 | 						Math.ceil(nLeft) - 0.5,
410 | 						Math.ceil(nTop) - 0.5,
411 | 						nRoundedWidth,
412 | 						nRoundedHeight
413 | 					);
414 | 				}
415 | 			}
416 | 			
417 | 			this._bIsPainted = true;
418 | 		};
419 | 			
420 | 		/**
421 | 		 * Make the image from Canvas if the browser supports Data URI.
422 | 		 */
423 | 		Drawing.prototype.makeImage = function () {
424 | 			if (this._bIsPainted) {
425 | 				_safeSetDataURI.call(this, _onMakeImage);
426 | 			}
427 | 		};
428 | 			
429 | 		/**
430 | 		 * Return whether the QRCode is painted or not
431 | 		 * 
432 | 		 * @return {Boolean}
433 | 		 */
434 | 		Drawing.prototype.isPainted = function () {
435 | 			return this._bIsPainted;
436 | 		};
437 | 		
438 | 		/**
439 | 		 * Clear the QRCode
440 | 		 */
441 | 		Drawing.prototype.clear = function () {
442 | 			this._oContext.clearRect(0, 0, this._elCanvas.width, this._elCanvas.height);
443 | 			this._bIsPainted = false;
444 | 		};
445 | 		
446 | 		/**
447 | 		 * @private
448 | 		 * @param {Number} nNumber
449 | 		 */
450 | 		Drawing.prototype.round = function (nNumber) {
451 | 			if (!nNumber) {
452 | 				return nNumber;
453 | 			}
454 | 			
455 | 			return Math.floor(nNumber * 1000) / 1000;
456 | 		};
457 | 		
458 | 		return Drawing;
459 | 	})();
460 | 	
461 | 	/**
462 | 	 * Get the type by string length
463 | 	 * 
464 | 	 * @private
465 | 	 * @param {String} sText
466 | 	 * @param {Number} nCorrectLevel
467 | 	 * @return {Number} type
468 | 	 */
469 | 	function _getTypeNumber(sText, nCorrectLevel) {			
470 | 		var nType = 1;
471 | 		var length = _getUTF8Length(sText);
472 | 		
473 | 		for (var i = 0, len = QRCodeLimitLength.length; i <= len; i++) {
474 | 			var nLimit = 0;
475 | 			
476 | 			switch (nCorrectLevel) {
477 | 				case QRErrorCorrectLevel.L :
478 | 					nLimit = QRCodeLimitLength[i][0];
479 | 					break;
480 | 				case QRErrorCorrectLevel.M :
481 | 					nLimit = QRCodeLimitLength[i][1];
482 | 					break;
483 | 				case QRErrorCorrectLevel.Q :
484 | 					nLimit = QRCodeLimitLength[i][2];
485 | 					break;
486 | 				case QRErrorCorrectLevel.H :
487 | 					nLimit = QRCodeLimitLength[i][3];
488 | 					break;
489 | 			}
490 | 			
491 | 			if (length <= nLimit) {
492 | 				break;
493 | 			} else {
494 | 				nType++;
495 | 			}
496 | 		}
497 | 		
498 | 		if (nType > QRCodeLimitLength.length) {
499 | 			throw new Error("Too long data");
500 | 		}
501 | 		
502 | 		return nType;
503 | 	}
504 | 
505 | 	function _getUTF8Length(sText) {
506 | 		var replacedText = encodeURI(sText).toString().replace(/\%[0-9a-fA-F]{2}/g, 'a');
507 | 		return replacedText.length + (replacedText.length != sText ? 3 : 0);
508 | 	}
509 | 	
510 | 	/**
511 | 	 * @class QRCode
512 | 	 * @constructor
513 | 	 * @example 
514 | 	 * new QRCode(document.getElementById("test"), "http://jindo.dev.naver.com/collie");
515 | 	 *
516 | 	 * @example
517 | 	 * var oQRCode = new QRCode("test", {
518 | 	 *    text : "http://naver.com",
519 | 	 *    width : 128,
520 | 	 *    height : 128
521 | 	 * });
522 | 	 * 
523 | 	 * oQRCode.clear(); // Clear the QRCode.
524 | 	 * oQRCode.makeCode("http://map.naver.com"); // Re-create the QRCode.
525 | 	 *
526 | 	 * @param {HTMLElement|String} el target element or 'id' attribute of element.
527 | 	 * @param {Object|String} vOption
528 | 	 * @param {String} vOption.text QRCode link data
529 | 	 * @param {Number} [vOption.width=256]
530 | 	 * @param {Number} [vOption.height=256]
531 | 	 * @param {String} [vOption.colorDark="#000000"]
532 | 	 * @param {String} [vOption.colorLight="#ffffff"]
533 | 	 * @param {QRCode.CorrectLevel} [vOption.correctLevel=QRCode.CorrectLevel.H] [L|M|Q|H] 
534 | 	 */
535 | 	QRCode = function (el, vOption) {
536 | 		this._htOption = {
537 | 			width : 256, 
538 | 			height : 256,
539 | 			typeNumber : 4,
540 | 			colorDark : "#000000",
541 | 			colorLight : "#ffffff",
542 | 			correctLevel : QRErrorCorrectLevel.H
543 | 		};
544 | 		
545 | 		if (typeof vOption === 'string') {
546 | 			vOption	= {
547 | 				text : vOption
548 | 			};
549 | 		}
550 | 		
551 | 		// Overwrites options
552 | 		if (vOption) {
553 | 			for (var i in vOption) {
554 | 				this._htOption[i] = vOption[i];
555 | 			}
556 | 		}
557 | 		
558 | 		if (typeof el == "string") {
559 | 			el = document.getElementById(el);
560 | 		}
561 | 
562 | 		if (this._htOption.useSVG) {
563 | 			Drawing = svgDrawer;
564 | 		}
565 | 		
566 | 		this._android = _getAndroid();
567 | 		this._el = el;
568 | 		this._oQRCode = null;
569 | 		this._oDrawing = new Drawing(this._el, this._htOption);
570 | 		
571 | 		if (this._htOption.text) {
572 | 			this.makeCode(this._htOption.text);	
573 | 		}
574 | 	};
575 | 	
576 | 	/**
577 | 	 * Make the QRCode
578 | 	 * 
579 | 	 * @param {String} sText link data
580 | 	 */
581 | 	QRCode.prototype.makeCode = function (sText) {
582 | 		this._oQRCode = new QRCodeModel(_getTypeNumber(sText, this._htOption.correctLevel), this._htOption.correctLevel);
583 | 		this._oQRCode.addData(sText);
584 | 		this._oQRCode.make();
585 | 		this._el.title = sText;
586 | 		this._oDrawing.draw(this._oQRCode);			
587 | 		this.makeImage();
588 | 	};
589 | 	
590 | 	/**
591 | 	 * Make the Image from Canvas element
592 | 	 * - It occurs automatically
593 | 	 * - Android below 3 doesn't support Data-URI spec.
594 | 	 * 
595 | 	 * @private
596 | 	 */
597 | 	QRCode.prototype.makeImage = function () {
598 | 		if (typeof this._oDrawing.makeImage == "function" && (!this._android || this._android >= 3)) {
599 | 			this._oDrawing.makeImage();
600 | 		}
601 | 	};
602 | 	
603 | 	/**
604 | 	 * Clear the QRCode
605 | 	 */
606 | 	QRCode.prototype.clear = function () {
607 | 		this._oDrawing.clear();
608 | 	};
609 | 	
610 | 	/**
611 | 	 * @name QRCode.CorrectLevel
612 | 	 */
613 | 	QRCode.CorrectLevel = QRErrorCorrectLevel;
614 | })();
615 | 


--------------------------------------------------------------------------------
/web/style.css:
--------------------------------------------------------------------------------
 1 | #tickets {
 2 |   border-top: dashed 1px gray;
 3 | }
 4 | 
 5 | #tickets tr {
 6 |   border-bottom: 1px solid gray;
 7 | }
 8 | 
 9 | #tickets th {
10 |   text-align: right;
11 |   font-weight: normal;
12 | }
13 | 
14 | #qr {
15 |   width: 128px;
16 | }
17 | 
18 | #qr-msg {
19 |   margin: 1em 0;
20 | }
21 | 
22 | .doh-url {
23 |   font-weight: bold;
24 |   font-family: monospace;
25 |   color: blue;
26 |   margin: 0.5em 0;
27 |   font-size: 1.5em;
28 | }
29 | 
30 | span.warn {
31 |   color: red;
32 | }
33 | 


--------------------------------------------------------------------------------