├── dependencies.md ├── pyxpub.db ├── pyxpub.sh ├── react ├── favicon.ico ├── asset-manifest.json ├── manifest.json ├── index.html ├── service-worker.js └── static │ └── css │ ├── main.681d9f5a.css │ ├── main.c225d4a2.css │ ├── main.681d9f5a.css.map │ └── main.c225d4a2.css.map ├── setup.sh ├── docs ├── README.md └── index.html ├── static └── js │ ├── script.js │ └── jquery.min.js ├── examples └── jquery │ ├── index.html │ └── script.js ├── views └── qr.html ├── requirements.txt ├── mtbottle.py ├── mtwsgi.py ├── raspbian.sh ├── exchangerate.py ├── verify_tx.py ├── README.md ├── xpub.py └── LICENSE /dependencies.md: -------------------------------------------------------------------------------- 1 | # Dependencies 2 | 3 | * python 3.6 4 | -------------------------------------------------------------------------------- /pyxpub.db: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/acidsploit/pyxpub/HEAD/pyxpub.db -------------------------------------------------------------------------------- /pyxpub.sh: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | 3 | source env/bin/activate 4 | python ./xpub.py 5 | -------------------------------------------------------------------------------- /react/favicon.ico: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/acidsploit/pyxpub/HEAD/react/favicon.ico -------------------------------------------------------------------------------- /setup.sh: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | 3 | virtualenv -p python3 env 4 | source env/bin/activate 5 | pip install -r requirements.txt 6 | touch key.list 7 | -------------------------------------------------------------------------------- /docs/README.md: -------------------------------------------------------------------------------- 1 | # Pyxpyb - Private Payment Gateway 2 | [https://acidsploit.github.io/pyxpub/](https://acidsploit.github.io/pyxpub/) 3 | 4 | 5 | -------------------------------------------------------------------------------- /static/js/script.js: -------------------------------------------------------------------------------- 1 | function copyToClipboard(element) { 2 | var $temp = $(""); 3 | $("body").append($temp); 4 | $temp.val($(element).text()).select(); 5 | document.execCommand("copy"); 6 | $temp.remove(); 7 | } 8 | -------------------------------------------------------------------------------- /react/asset-manifest.json: -------------------------------------------------------------------------------- 1 | { 2 | "main.css": "static/css/main.681d9f5a.css", 3 | "main.css.map": "static/css/main.681d9f5a.css.map", 4 | "main.js": "static/js/main.f8130d6b.js", 5 | "main.js.map": "static/js/main.f8130d6b.js.map" 6 | } -------------------------------------------------------------------------------- /examples/jquery/index.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | JSON Example 5 | 6 | 7 | 9 | 10 | 11 | 12 | 13 | -------------------------------------------------------------------------------- /react/manifest.json: -------------------------------------------------------------------------------- 1 | { 2 | "short_name": "React App", 3 | "name": "Create React App Sample", 4 | "icons": [ 5 | { 6 | "src": "favicon.ico", 7 | "sizes": "64x64 32x32 24x24 16x16", 8 | "type": "image/x-icon" 9 | } 10 | ], 11 | "start_url": "./index.html", 12 | "display": "standalone", 13 | "theme_color": "#000000", 14 | "background_color": "#ffffff" 15 | } 16 | -------------------------------------------------------------------------------- /examples/jquery/script.js: -------------------------------------------------------------------------------- 1 | $(document).ready(function(){ 2 | $.getJSON( "http://localhost:8080/api/payment?amount=0.0023&label=SHOP:1Wed2B44", function( data ) { 3 | var items = []; 4 | var payment = data['payment']; 5 | $.each( payment, function( key, val ) { 6 | items.push( "

" + val + "

" ); 7 | }); 8 | 9 | $( "

11 |

12 |
13 | (Click QR to Copy) 14 |

{addr}

{label}

React PoS

Pyxpub - Examples

7 |

Pyxpub - Private Payment Gateway - Examples

8 |

Pyxpyb - Private Payment Gateway

9 |

Github Repository

10 |

11 |

12 | Pyxpub is a simple self-hosted webapp that generates unique payment requests for Bitcoin Cash. It can do this as a simple webpage with a Bitcoin Cash address and corresponding QR code or as a JSON request. It can be accessed directly, be embedded in a webpage through an iframe, or you can do JSON requests through the API. All generated Bitcoin Cash addresses are derived from a pre-defined (Electron Cash) xpub key. 13 |

14 |

15 | 16 |

Examples

17 | 18 |

JSON Payment Request

19 |

jQuery Example

20 | 21 | Parameters 22 |

amount
label

26 | 27 |


28 |             curl 'http://localhost:8080/payment?amount=0.0023&label=SHOP:1Wed2B44'
29 | 
30 |             {
31 |             "payment": {
32 |               "amount": "0.0023", 
33 |               "addr": "bitcoincash:qpej4uw429m9m0wawcphw9v4sch2ymd6qsqh7jx9gl", 
34 |               "legacy_addr": "1BVx9uf5UGJDt1eMqjut8qh1K4mmEeDSFQ", 
35 |               "label": "SHOP:1Wed2B44", 
36 |               "qr_img": "/qr?addr=bitcoincash:qpej4uw429m9m0wawcphw9v4sch2ymd6qsqh7jx9gl&amount=0.0023&label=SHOP:1Wed2B44", 
37 |               "payment_uri": "bitcoincash:qpej4uw429m9m0wawcphw9v4sch2ymd6qsqh7jx9gl?amount=0.0023&message=SHOP:1Wed2B44"
38 |               }
39 |             }
40 |

41 | 42 |

Embedded iframe

43 | No parameters 44 |

<iframe width=100% height=450px scrolling="no" frameborder=0 src="https://donate.devzero.be"></iframe>


45 |         
46 | 
47 |         With amount & label parameters
48 |         <iframe width=100% height=470px scrolling="no" frameborder=0 src="https://donate.devzero.be/?amount=0.0123&label=MESG456"></iframe>
49 |         
50 |


51 |   
52 | 
53 | 


--------------------------------------------------------------------------------
/raspbian.sh:
--------------------------------------------------------------------------------
  1 | #!/bin/bash
  2 | 
  3 | # sudo apt-get update
  4 | # sudo apt-get upgrade
  5 | # sudo reboot
  6 | 
  7 | 
  8 | UWSGI='''[uwsgi]\n
  9 | socket = /run/uwsgi/app/pyxpub/socket\n
 10 | processes = 2\n
 11 | chdir = /srv/wsgi/pyxpub/\n
 12 | master = true\n
 13 | plugins = python3\n
 14 | file = xpub.py\n
 15 | uid = www-data\n
 16 | gid = www-data\n
 17 | virtualenv = /srv/wsgi/pyxpub/env/\n
 18 | '''
 19 | 
 20 | NGINX='''upstream _pyxpub {
 21 |   server unix:/run/uwsgi/app/pyxpub/socket;
 22 | }
 23 |  
 24 | server {\n
 25 |   # server_name yourserver.com;\n
 26 |   listen 80 default_server;\n
 27 |  \n
 28 |   root /srv/http/pyxpub;\n
 29 |  \n
 30 |   server_name _;\n
 31 |  \n
 32 |   rewrite ^/$ /react permanent;\n
 33 |  \n
 34 |   location /react {\n
 35 |     index index.html;\n
 36 |   }\n
 37 |  \n
 38 |   location /qr {\n
 39 |     try_files $uri @uwsgi;\n
 40 |   }\n
 41 |  \n
 42 |   location /api {\n
 43 |     try_files $uri @uwsgi;\n
 44 |   }\n
 45 |  \n
 46 |   location /embed {\n
 47 |     return 403;\n
 48 |   }\n
 49 |  \n
 50 |   location @uwsgi {\n
 51 |     include uwsgi_params;\n
 52 |     uwsgi_pass _pyxpub;\n
 53 |   }\n
 54 | }\n
 55 | '''
 56 | 
 57 | 
 58 | echo "Setup System"
 59 | apt-get install git vim nginx uwsgi uwsgi-plugin-python3 python-pip python-virtualenv python3-pip python3-virtualenv python3-dev python3-dev python3-setuptools python3-qrcode libjpeg-dev libzlcore-dev libopenjpeg-dev libwebp-dev liblcms2-dev libtiff5-dev libfreetype6-dev libopenjp2-7-dev
 60 | 
 61 | mkdir /srv/http/
 62 | mkdir /srv/http/pyxpub/
 63 | 
 64 | useradd -d /srv/wsgi -M -s /usr/sbin/nologin -U wsgi
 65 | 
 66 | 
 67 | echo "Setup pyxpub environment"
 68 | cd /srv/wsgi/pyxpub/
 69 | virtualenv -p python3 env
 70 | source env/bin/activate
 71 | pip3 install -r requirements.txt
 72 | rm -rf /srv/http/pyxpub/react/
 73 | cp -vfr /srv/wsgi/pyxpub/react /srv/http/pyxpub/
 74 | 
 75 | 
 76 | echo "Setup uWSGI"
 77 | echo -e $UWSGI > /etc/uwsgi/apps-available/pyxpub.ini
 78 | rm /etc/uwsgi/apps-enabled/pyxpub.ini
 79 | ln -s /etc/uwsgi/apps-available/pyxpub.ini /etc/uwsgi/apps-enabled/pyxpub.ini
 80 | 
 81 | find /srv/wsgi/ -type d -exec chown www-data:www-data {} +
 82 | find /srv/wsgi/ -type f -exec chown www-data:www-data {} +
 83 | find /srv/wsgi/ -type d -exec chmod 755 {} +
 84 | find /srv/wsgi/ -type f -exec chmod 644 {} +
 85 | 
 86 | systemctl enable uwsgi.service
 87 | systemctl restart uwsgi.service
 88 |  
 89 |  
 90 | echo "Setup NGINX"
 91 | echo -e $NGINX > /etc/nginx/sites-available/pyxpub.conf
 92 | rm /etc/nginx/sites-enabled/pyxpub.conf
 93 | ln -s /etc/nginx/sites-available/pyxpub.conf /etc/nginx/sites-enabled/pyxpub.conf
 94 | rm /etc/nginx/sites-enabled/default
 95 | 
 96 | find /srv/http/ -type d -exec chown www-data:www-data {} +
 97 | find /srv/http/ -type f -exec chown www-data:www-data {} +
 98 | find /srv/http/ -type d -exec chmod 755 {} +
 99 | find /srv/http/ -type f -exec chmod 644 {} +
100 | 
101 | nginx -t
102 | systemctl enable nginx
103 | systemctl restart nginx
104 | 


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/react/service-worker.js:
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1 | "use strict";var precacheConfig=[["./index.html","385d5c10414faa65608e741db2fd98af"],["./static/css/main.681d9f5a.css","bc53f0ba7cff58616c46f47540da8aac"],["./static/js/main.f8130d6b.js","f2511db9ebd1f82c0b84291373a9589c"]],cacheName="sw-precache-v3-sw-precache-webpack-plugin-"+(self.registration?self.registration.scope:""),ignoreUrlParametersMatching=[/^utm_/],addDirectoryIndex=function(e,t){var n=new URL(e);return"/"===n.pathname.slice(-1)&&(n.pathname+=t),n.toString()},cleanResponse=function(e){return e.redirected?("body"in e?Promise.resolve(e.body):e.blob()).then(function(t){return new Response(t,{headers:e.headers,status:e.status,statusText:e.statusText})}):Promise.resolve(e)},createCacheKey=function(e,t,n,r){var a=new URL(e);return r&&a.pathname.match(r)||(a.search+=(a.search?"&":"")+encodeURIComponent(t)+"="+encodeURIComponent(n)),a.toString()},isPathWhitelisted=function(e,t){if(0===e.length)return!0;var n=new URL(t).pathname;return e.some(function(e){return n.match(e)})},stripIgnoredUrlParameters=function(e,t){var n=new URL(e);return n.hash="",n.search=n.search.slice(1).split("&").map(function(e){return e.split("=")}).filter(function(e){return t.every(function(t){return!t.test(e[0])})}).map(function(e){return e.join("=")}).join("&"),n.toString()},hashParamName="_sw-precache",urlsToCacheKeys=new Map(precacheConfig.map(function(e){var t=e[0],n=e[1],r=new URL(t,self.location),a=createCacheKey(r,hashParamName,n,/\.\w{8}\./);return[r.toString(),a]}));function setOfCachedUrls(e){return e.keys().then(function(e){return e.map(function(e){return e.url})}).then(function(e){return new Set(e)})}self.addEventListener("install",function(e){e.waitUntil(caches.open(cacheName).then(function(e){return setOfCachedUrls(e).then(function(t){return Promise.all(Array.from(urlsToCacheKeys.values()).map(function(n){if(!t.has(n)){var r=new Request(n,{credentials:"same-origin"});return fetch(r).then(function(t){if(!t.ok)throw new Error("Request for "+n+" returned a response with status "+t.status);return cleanResponse(t).then(function(t){return e.put(n,t)})})}}))})}).then(function(){return self.skipWaiting()}))}),self.addEventListener("activate",function(e){var t=new Set(urlsToCacheKeys.values());e.waitUntil(caches.open(cacheName).then(function(e){return e.keys().then(function(n){return Promise.all(n.map(function(n){if(!t.has(n.url))return e.delete(n)}))})}).then(function(){return self.clients.claim()}))}),self.addEventListener("fetch",function(e){if("GET"===e.request.method){var t,n=stripIgnoredUrlParameters(e.request.url,ignoreUrlParametersMatching),r="index.html";(t=urlsToCacheKeys.has(n))||(n=addDirectoryIndex(n,r),t=urlsToCacheKeys.has(n));var a="./index.html";!t&&"navigate"===e.request.mode&&isPathWhitelisted(["^(?!\\/__).*"],e.request.url)&&(n=new URL(a,self.location).toString(),t=urlsToCacheKeys.has(n)),t&&e.respondWith(caches.open(cacheName).then(function(e){return e.match(urlsToCacheKeys.get(n)).then(function(e){if(e)return e;throw Error("The cached response that was expected is missing.")})}).catch(function(t){return console.warn('Couldn\'t serve response for "%s" from cache: %O',e.request.url,t),fetch(e.request)}))}});


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/react/static/css/main.681d9f5a.css:
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1 | @import url(https://fonts.googleapis.com/css?family=Ubuntu);@import url(https://fonts.googleapis.com/css?family=Ubuntu);body{margin:0;padding:0;font-family:sans-serif}body{font-family:Ubuntu,sans-serif}.App{text-align:center}.presetsh5{text-align:left}.presets{position:relative;top:0;left:5px;float:left}.action{margin-top:3vw;margin-bottom:3vw}.btn-action{width:220px;font-weight:900;font-size:1.4em}.mono-tiny{font-family:Ubuntu Mono;font-size:.8em}.bold,.bold-big{font-weight:700}.bold-big{font-size:1.2em}.price{font-family:Ubuntu Mono}.bottom{position:relative;bottom:0}.home-brand{font-weight:900}.avatar{text-align:left}.btn-item-remove{width:100px;height:55px}.subtotal-left{text-align:left;left:0}.subtotal-left,.subtotal-right{font-size:1em;position:relative;top:0}.subtotal-right{text-align:right;right:0}.row-top{padding-top:15px}.subtotal-right h4{margin:0;padding:0}.subtotal-right h5{font-weight:600;font-size:1.4em}.close{position:relative;right:15px;top:0}.btn-close{width:40px;height:40px;padding-left:12px;padding-top:1px}.btn-backandforth{width:150px;height:40px;margin-left:20px;margin-right:20px}.backandforth{padding-top:15px}.order-totals{margin-top:3.5vw}.order-items{border-width:2px 0 0}.order-item,.order-items{border-style:solid;border-color:#c9daeb}.order-item{margin:0;padding:10px 5px 5px;border-width:0 1px 1px}.detail-item{margin:-1px;padding:10px 5px 5px;border:1px solid #c9daeb}.item-total{margin-right:-3.5vw}.order-buttons{margin-right:-5px}.order-btn{margin-left:20px;margin-bottom:20px}.input-buttons{margin-top:8px;margin-left:0;float:left}.input-btn{margin-right:5px;margin-bottom:0}.pingpong i{margin-top:25px}.target-ratio-resize{width:100%;height:auto;max-width:25vw}@media (max-width:1200px){.target-ratio-resize{width:100%;height:auto;max-width:40vw}}@media (max-width:900px){.target-ratio-resize{width:100%;height:auto;max-width:50vw}}@media (max-width:600px){.target-ratio-resize{width:100%;height:auto;max-width:65vw}}.input-field input[id=amount]{font-family:Ubuntu Mono;font-size:3em;text-align:right}.input-field label[id=currency]{font-family:Ubuntu Bold;font-size:2.3em;font-weight:900;margin-top:-16px}.calculator-footer{font-size:.8em}.numpad{margin-top:6vh;padding:5px 10px;margin-left:auto;margin-right:auto;max-width:22vw;min-width:15vw}.input-panel{height:100px}.buttons,.ibtn{margin-left:auto;margin-right:auto}.ibtn{position:relative;float:left;font-size:1.5em;color:#fff;width:100%;height:3vw;margin-top:1vh}@media (max-width:1500px){body{margin-top:0}.numpad{min-width:10vw;max-width:27vw}.ibtn{padding:0 .5rem;width:100%;height:4vw;margin-left:auto;margin-right:auto;margin-top:1vh}}@media (max-width:1200px){body{margin-top:0}.numpad{min-width:10vw;max-width:45vw}.ibtn{padding:0 .5rem;width:100%;height:5.5vw;margin-left:auto;margin-right:auto;margin-top:1vh}}@media (max-width:900px){body{margin-top:0}.numpad{min-width:30vw;max-width:50vw}.ibtn{width:100%;height:8vw;margin-left:auto;margin-right:auto;margin-top:1vh}}@media (max-width:600px){body{margin-top:0}.numpad{min-width:70vw;max-width:90vw}.ibtn{padding:0 .5rem;width:100%;height:12vw;margin-left:auto;margin-right:auto;margin-top:1vh}}
2 | /*# sourceMappingURL=main.681d9f5a.css.map*/


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/react/static/css/main.c225d4a2.css:
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1 | @import url(https://fonts.googleapis.com/css?family=Ubuntu);@import url(https://fonts.googleapis.com/css?family=Ubuntu);body{margin:0;padding:0;font-family:sans-serif}body{font-family:Ubuntu,sans-serif}.App{text-align:center}.presetsh5{text-align:left}.presets{position:relative;top:0;left:5px;float:left}.action{margin-top:3vw;margin-bottom:3vw}.btn-action{width:220px;font-weight:900;font-size:1.4em}.mono-tiny{font-family:Ubuntu Mono;font-size:.8em}.bold,.bold-big{font-weight:700}.bold-big{font-size:1.2em}.price{font-family:Ubuntu Mono}.bottom{position:relative;bottom:0}.home-brand{font-weight:900}.avatar{text-align:left}.btn-item-remove{width:100px;height:55px}.subtotal-left{text-align:left;left:0}.subtotal-left,.subtotal-right{font-size:1em;position:relative;top:0}.subtotal-right{text-align:right;right:0}.row-top{padding-top:15px}.subtotal-right h4{margin:0;padding:0}.subtotal-right h5{font-weight:600;font-size:1.4em}.close{position:relative;right:15px;top:0}.btn-close{width:40px;height:40px;padding-left:12px;padding-top:1px}.btn-backandforth{width:150px;height:40px;margin-left:20px;margin-right:20px}.backandforth{padding-top:15px}.order-totals{margin-top:3.5vw}.order-items{border-width:2px 0 0}.order-item,.order-items{border-style:solid;border-color:#c9daeb}.order-item{margin:0;padding:10px 5px 5px;border-width:0 1px 1px}.detail-item{margin:-1px;padding:10px 5px 5px;border:1px solid #c9daeb}.item-total{margin-right:-3.5vw}.order-buttons{margin-right:-5px}.order-btn{margin-left:20px;margin-bottom:20px}.input-buttons{margin-top:8px;margin-left:0;float:left}.input-btn{margin-right:5px;margin-bottom:0}.pingpong i{margin-top:25px}.target-ratio-resize{width:100%;height:auto;max-width:25vw}@media (max-width:1200px){.target-ratio-resize{width:100%;height:auto;max-width:40vw}}@media (max-width:900px){.target-ratio-resize{width:100%;height:auto;max-width:50vw}}@media (max-width:600px){.target-ratio-resize{width:100%;height:auto;max-width:65vw}}.input-field input[id=amount]{font-family:Ubuntu Mono;font-size:3em;text-align:right}.input-field label[id=currency]{font-family:Ubuntu Bold;font-size:2.3em;font-weight:900;margin-top:-16px}.calculator-footer{font-size:.8em}.numpad{margin-top:6vh;padding:5px 10px;margin-left:auto;margin-right:auto;max-width:22vw;min-width:15vw}.input-panel{height:100px}.buttons,.ibtn{margin-left:auto;margin-right:auto}.ibtn{position:relative;float:left;font-size:1.5em;color:#fff;width:100%;height:3vw;margin-top:1vh}@media (max-width:1500px){body{margin-top:2vh}.numpad{min-width:10vw;max-width:27vw}.ibtn{padding:0 .5rem;width:100%;height:4vw;margin-left:auto;margin-right:auto;margin-top:1vh}}@media (max-width:1200px){body{margin-top:2vh}.numpad{min-width:10vw;max-width:35vw}.ibtn{padding:0 .5rem;width:100%;height:5vw;margin-left:auto;margin-right:auto;margin-top:1vh}}@media (max-width:900px){body{margin-top:2vh}.numpad{min-width:30vw;max-width:50vw}.ibtn{width:100%;height:8vw;margin-left:auto;margin-right:auto;margin-top:1vh}}@media (max-width:600px){body{margin-top:2vh}.numpad{min-width:70vw;max-width:90vw}.ibtn{padding:0 .5rem;width:100%;height:12vw;margin-left:auto;margin-right:auto;margin-top:1vh}}
2 | /*# sourceMappingURL=main.c225d4a2.css.map*/


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/exchangerate.py:
--------------------------------------------------------------------------------
  1 | #!/usr/bin/env python3
  2 | 
  3 | #import urllib.request
  4 | import requests
  5 | import json
  6 | import random
  7 | import sys
  8 | import os
  9 | import time
 10 | 
 11 | #bitcoin stuff
 12 | #import pycoin.key
 13 | #os.environ["PYCOIN_NATIVE"]="openssl"
 14 | #from cashaddress import convert
 15 | 
 16 | #dataset
 17 | import dataset
 18 | from stuf import stuf
 19 | 
 20 | db_name = 'sqlite:///pyxpub.db?check_same_thread=False'
 21 | 
 22 | SOURCES = {
 23 |   'cryptocompare': ["EUR", "USD", "GBP", "AUD", "BRL", "CAD", "CHF", "CLP", "CNY", 
 24 |                     "CZK", "DKK", "HKD", "HUF", "IDR", "ILS", "INR", "JPY", "KRW", 
 25 |                     "MXN", "MYR", "NOK", "NZD", "PHP", "PKR", "PLN", "RUB", "SEK", 
 26 |                     "SGD", "THB", "TRY", "TWD", "ZAR"],
 27 |   'coinmarketcap': ["EUR", "USD", "GBP", "AUD", "BRL", "CAD", "CHF", "CLP", "CNY", 
 28 |                     "CZK", "DKK", "HKD", "HUF", "IDR", "ILS", "INR", "JPY", "KRW", 
 29 |                     "MXN", "MYR", "NOK", "NZD", "PHP", "PKR", "PLN", "RUB", "SEK", 
 30 |                     "SGD", "THB", "TRY", "TWD", "ZAR"],
 31 |   'kraken':        ["EUR", "USD"],
 32 |   'coinbase':      ["EUR", "USD"],
 33 |   'bitstamp':      ["EUR", "USD"],
 34 |   'coinfloor':     ["GBP"],
 35 |   'bitbay':        ["EUR", "USD", "PLN"],
 36 |   'bitflip':       ["RUB", "USD", "UAH"],
 37 |   }
 38 | 
 39 | 
 40 | def is_supported(currency, source):
 41 |   if source in SOURCES:
 42 |     if currency in SOURCES[source]:
 43 |       return True
 44 | 
 45 |   return False
 46 | 
 47 |   
 48 | def get_currencies(source):
 49 |   if source in SOURCES:
 50 |     return {'currencies': SOURCES[source]}
 51 |   
 52 | def get_sources():
 53 |   _keys = []
 54 |   for key in SOURCES:
 55 |     _keys.append(key)
 56 |     
 57 |   return {'sources': _keys}
 58 | 
 59 | def update_coinmarketcap(currency):
 60 |   _db = dataset.connect(db_name, row_type=stuf)
 61 |   _table = _db['coinmarketcap']
 62 |   
 63 |   _api = "https://api.coinmarketcap.com/v1/ticker/bitcoin-cash/?convert={}"
 64 |   _query = _api.format(currency)
 65 |   
 66 |   print("PYXPUB - FETCH: " + _query)
 67 |   _response = requests.get(_query)
 68 |   _json = _response.json()
 69 |   
 70 |   _price = _json[0]['price_' + currency.lower()]
 71 |   
 72 |   _record = _table.find_one(currency=currency)
 73 |   if not _record:
 74 |     print('PYXPUB - INSERT: ' + currency)
 75 |     with dataset.connect(db_name, row_type=stuf) as tx:
 76 |       tx['coinmarketcap'].insert(dict(currency=currency, rate=_price, timestamp=time.time()))
 77 |   else:
 78 |     _table.update(dict(currency=currency, rate=_price, timestamp=time.time()), ['currency'])
 79 |     print('PYXPUB - UPDATE: ' + currency)
 80 |     
 81 |   
 82 | def update_db(source, currency):
 83 |   _db = dataset.connect(db_name, row_type=stuf)
 84 |   _table = _db[source]
 85 |   
 86 |   if source == 'coinmarketcap':
 87 |     update_coinmarketcap(currency)
 88 |     return 0
 89 |   
 90 |   if source == 'cryptocompare':
 91 |     _api = "https://min-api.cryptocompare.com/data/price?fsym=BCH&tsyms={currencies}"
 92 |   else:
 93 |     _api = "https://min-api.cryptocompare.com/data/price?fsym=BCH&tsyms={currencies}&e={source}"
 94 |   
 95 |   _string = ','.join(map(str, SOURCES[source]))
 96 |   _filler = {'currencies': _string,
 97 |              'source': source
 98 |             }
 99 |   _query = _api.format(**_filler)
100 |   
101 |   print("PYXPUB - FETCH: " + _query)
102 |   _response = requests.get(_query)
103 |   _json = _response.json()
104 |   
105 |   for key in _json:
106 |     _record = _table.find_one(currency=key)
107 |     if not _record:
108 |       print('PYXPUB - INSERT: ' + key)
109 |       with dataset.connect(db_name, row_type=stuf) as tx:
110 |         tx[source].insert(dict(currency=key, rate=_json[key], timestamp=time.time()))
111 |     else:
112 |       _table.update(dict(currency=key, rate=_json[key], timestamp=time.time()), ['currency'])
113 |       #print('UPDATE: ' + key)
114 | 
115 | def get_rate(currency, source):
116 |   _db = dataset.connect(db_name, row_type=stuf)
117 |   _table = _db[source]
118 |   _record = _table.find_one(currency=currency)
119 |   _now = time.time()
120 |   
121 |   if source in SOURCES:
122 |     if not _record:
123 |       print("PYXPUB - TABLE: {} ENTRY: {} NOT FOUND - UPDATING".format(source, currency))
124 |       update_db(source, currency)
125 |       _record = _table.find_one(currency=currency)
126 |     else:
127 |       if ((_now - _record.timestamp) > 30):
128 |         print("PYXPUB - TABLE {} OUTDATED - UPDATING".format(source))
129 |         update_db(source, currency)
130 |         _record = _table.find_one(currency=currency)
131 |       else:
132 |         _record = _table.find_one(currency=currency)
133 | 
134 |   return _record
135 | 
136 | 
137 | 
138 | def main():
139 |   _curr = "USD"
140 |   
141 |   try:
142 |     _curr = sys.argv[1]
143 |   except:
144 |     print('No currency specified. Using: ' + _curr)
145 |     
146 |   _ticker = get_live_ticker(_curr)
147 | 
148 |   print("{:.2f}".format(float(_ticker['price_' + _curr.lower()])))
149 |   
150 |   update_cryptocompare()
151 |   
152 |   #for f in fiat:
153 |     #_ticker = get_live_ticker(f)
154 |     #print("%3s: %.2f" % (f, float(_ticker[0]['price_' + f.lower()])))
155 | 
156 | if __name__ == '__main__':
157 |   main()
158 | 


--------------------------------------------------------------------------------
/verify_tx.py:
--------------------------------------------------------------------------------
  1 | #!/usr/bin/env python3
  2 | 
  3 | #import urllib.request
  4 | import requests
  5 | import json
  6 | import random
  7 | import sys
  8 | import os
  9 | 
 10 | #bitcoin stuff
 11 | import pycoin.key
 12 | os.environ["PYCOIN_NATIVE"]="openssl"
 13 | from cashaddress import convert
 14 | 
 15 | #dataset
 16 | import dataset
 17 | from stuf import stuf
 18 | 
 19 | explorers = [
 20 |   {
 21 |     'api_addr': 'https://blockdozer.com/insight-api/addr/{caddr}',
 22 |     'api_tx': 'https://blockdozer.com/insight-api/tx/',
 23 |   },
 24 |   {
 25 |     'api_addr': 'https://bch-insight.bitpay.com/api/addr/{caddr}',
 26 |     'api_tx': 'https://bch-insight.bitpay.com/api/tx/',
 27 |   },
 28 |   # Needs legacy address
 29 |   #{
 30 |     #'api_addr': 'https://cashexplorer.bitcoin.com/api/addr/{legacy}',
 31 |     #'api_tx': 'https://cashexplorer.bitcoin.com/api/tx/',
 32 |   #},
 33 |   {
 34 |     'api_addr': 'https://bccblock.info/api/addr/{legacy}',
 35 |     'api_tx': 'https://bccblock.info/api/tx/',
 36 |   },
 37 |   {
 38 |     'api_addr': 'https://bitcoincash.blockexplorer.com/api/addr/{legacy}',
 39 |     'api_tx': 'https://bitcoincash.blockexplorer.com/api/tx/',
 40 |   },
 41 |   
 42 |   
 43 | ]
 44 | 
 45 | def randomize():
 46 |   rand = random.randint(0, len(explorers)-1)
 47 |   api = explorers[rand]
 48 |   
 49 |   return api
 50 | 
 51 | def get_api_addr(addr):
 52 |   _legacy = convert.to_legacy_address(addr)
 53 |   _addr = {
 54 |     'caddr': addr,
 55 |     'legacy': _legacy,
 56 |   }
 57 |   
 58 |   _api = randomize()
 59 |   
 60 |   _request = _api['api_addr'].format(**_addr)
 61 |   print(_request)
 62 |   _r = requests.get(_request)
 63 |   _json_addr = _r.json()
 64 |   
 65 |   return _json_addr
 66 |   
 67 | def get_api_tx(tx):
 68 |   _api = randomize()
 69 |   _request = _api['api_tx'] + tx
 70 |   print(_request)
 71 |   _r = requests.get(_request)
 72 |   _json_tx = _r.json()
 73 |   
 74 |   return _json_tx
 75 | 
 76 | def verify_tx(addr):
 77 |   _legacy = convert.to_legacy_address(addr)
 78 |   _addr = {
 79 |     'caddr': addr,
 80 |     'legacy': _legacy,
 81 |   }
 82 |   _json_addr = get_api_addr(addr)
 83 |   _amount = _json_addr['unconfirmedBalance'] if _json_addr['unconfirmedBalance'] != 0 else _json_addr['totalReceived']
 84 |   
 85 |   #print(json.dumps(_json_addr, indent=4))
 86 |   
 87 |   if len(_json_addr['transactions']) == 1:
 88 |     print('tx: ' + _json_addr['transactions'][0])
 89 |     _txid = _json_addr['transactions'][0]
 90 |     _request = api_tx + _txid
 91 |     _r = requests.get(_request)
 92 |     _json_tx = _r.json()
 93 |     #print(json.dumps(_json_tx, indent=4))
 94 |     for _out in _json_tx['vout']:
 95 |       if float(_out['value']) == _amount:
 96 |         if _legacy == _out['scriptPubKey']['addresses'][0] or addr.lstrip('bitcoincash:') == _out['scriptPubKey']['addresses'][0]:
 97 |           print('FOUND!')
 98 |           print(_out['value'])
 99 |           _tx = {
100 |             "value": _amount,
101 |             "input_address": addr,
102 |             "confirmations": _json_tx['confirmations'],
103 |             "transaction_hash": _txid,
104 |             "input_transaction_hash": _txid,
105 |             "destination_address": addr,
106 |             }
107 |           return _tx
108 | 
109 |   return False
110 | 
111 | def verify_tx_with_amount(addr, amount):
112 |   _legacy = convert.to_legacy_address(addr)
113 | 
114 |   _json_addr = get_api_addr(addr)
115 |   
116 |   #print(json.dumps(_json_addr, indent=4))
117 |   
118 |   if len(_json_addr['transactions']) > 0:
119 |     for _txid in _json_addr['transactions']:
120 |       print('txid: ' + _txid)
121 |       _json_tx = get_api_tx(_txid)
122 |       #print(json.dumps(_json_tx, indent=4))
123 |       for _out in _json_tx['vout']:
124 |         if float(_out['value']) == float(amount):
125 |           if _legacy == _out['scriptPubKey']['addresses'][0] or addr.lstrip('bitcoincash:') == _out['scriptPubKey']['addresses'][0]:
126 |             print('FOUND!')
127 |             print(_out['value'])
128 |             _tx = {
129 |               "value": amount,
130 |               "input_address": addr,
131 |               "confirmations": _json_tx['confirmations'],
132 |               "transaction_hash": _txid,
133 |               "input_transaction_hash": _txid,
134 |               "destination_address": addr,
135 |               }
136 |             return _tx
137 | 
138 |   return False
139 | 
140 | def verify(addr, amount):
141 |   _legacy = convert.to_legacy_address(addr)
142 |   _json_addr = get_api_addr(addr)
143 |   
144 |   if _json_addr['unconfirmedBalance'] == float(amount) or _json_addr['balance'] == float(amount):
145 |     for _txid in _json_addr['transactions']:
146 |       print('txid: ' + _txid)
147 |       _json_tx = get_api_tx(_txid)
148 |       for _out in _json_tx['vout']:
149 |         if float(_out['value']) == float(amount):
150 |           if _legacy == _out['scriptPubKey']['addresses'][0] or addr.lstrip('bitcoincash:') == _out['scriptPubKey']['addresses'][0]:
151 |             print('FOUND!')
152 |             print(_out['value'])
153 |             _tx = {
154 |               "received": 1,
155 |               "receive_address": addr,
156 |               "amount": amount,
157 |               "confirmations": _json_tx['confirmations'],
158 |               "txid": _txid,
159 |               }
160 |             return _tx
161 |   
162 |   return {"received": 0}
163 | 
164 | 
165 | def callback(addr, callbackurl, amount=False):
166 |   _tx = False
167 |   _callback = callbackurl
168 |   if addr and amount:
169 |     _tx = verify_tx_with_amount(addr, amount)
170 |   else:
171 |     _tx = verify_tx(addr)
172 |     
173 |   if _tx:
174 |     _callback += '&value=' + _tx['value'] 
175 |     _callback += '&input_address=' + _tx['input_address']
176 |     _callback += '&confirmations' + _tx['confirmations']
177 |     _callback += '&transaction_hash' + _tx['transaction_hash']
178 |     _callback += '&input_transaction_hash' + _tx['input_transaction_hash']
179 |     _callback += '&destination_address' + _tx['destination_address']
180 |     
181 |     _r = requests.get(_callback)
182 |     return True
183 |   else:
184 |     return False
185 | 
186 | 
187 | def main():
188 |   _addr = ""
189 |   _amount = False
190 |   _callback = False
191 |   _tx = False
192 |   
193 |   try:
194 |     _addr = sys.argv[1]
195 |   except:
196 |     print('No address to check!')
197 |     sys.exit(2)
198 |     
199 |   try:
200 |     _amount = sys.argv[2]
201 |   except:
202 |     _amount = False
203 |     
204 |   try:
205 |     _callback = sys.argv[3]
206 |   except:
207 |     _callback = False
208 |     
209 |   #print('addr: ' + _addr)
210 |   #print('amnt: ' + str(_amount))
211 |   
212 |   if _amount:
213 |     _tx = verify_tx_with_amount(_addr, _amount)
214 |     print(_tx)
215 |   else:
216 |     _tx = verify_tx(_addr)
217 |     
218 |   #if _tx and _callback:
219 |     #callback(_addr, _callback, )
220 | 
221 | if __name__ == '__main__':
222 |   main()
223 | 


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--------------------------------------------------------------------------------
/README.md:
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  1 | # pyxpub - Private Payment Gateway
  2 |  
  3 | Pyxpub is a simple webapp that generates unique payment requests for Bitcoin Cash. It exposes the needed features of a receive-only wallet through a JSON API to enable quick development of Point-of-Sale systems. This without the developer having to worry to much about the sensitive bits. Pyxpub makes it easy to follow Bitcoin best practices and future-proofs your application in order to scale towards future needs.
  4 | 
  5 | Pyxpub also includes a Point-of-Sale app by default. 
  6 | 
  7 | Check out the live demo at [demo.pyxpub.io](https://demo.pyxpub.io) (github repo/screenshots: [acidsploit/react-pos](https://github.com/acidsploit/react-pos))
  8 | 
  9 | ## Introduction
 10 | As per Bitcoin best practices it is preferred to use a new receiving address for each payment. This for security and privacy implications for both you and your customers or donators. Also, we do not want any private keys on the server generating the receiving address, nor would we want them on any PoS system. This can easily be achieved by using an hd-wallet as described in [BIP32](https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki). This is the default wallet type when you create a new wallet with [Electron Cash](https://electroncash.org/).
 11 | 
 12 | ### pyxpub
 13 | Pyxpub exposes the needed features of that wallet through an easy to use JSON API, this to enable quick Point-of-Sale developement, without having to worry about the sensitive bits. Pyxpub handles the generation of new unique addresses for payment requests and keeps track of those, monitor payments requests for incoming transactions, and keeps a sales ledger. All you need to do is call the right api endpoints to get it all in your app.
 14 | 
 15 | All generated Bitcoin Cash addresses are derived from a pre-defined (Electron Cash) xpub key. Address re-use is prevented by keeping track of used addresses.
 16 | 
 17 | ### xpub (Electron Cash)
 18 | First, when you create a new wallet with Electron Cash, it is very important to properly backup and safely store your mnemonic seed. This Electron wallet is your full (send & receive) wallet, make sure it is password protected and also stored safely. You will use it later to retrieve payments. The webapp will use the xpub key to generate receive only addresses on the server, corresponding to the addresses from your Electron wallet. This way we don't need private keys on the server. You can find your wallet's master public key or xpub key through the 'Wallet -> Information' menu.
 19 | 
 20 | ## Installation (built-in server)
 21 | __clone repo__
 22 | 
 23 |     git clone https://github.com/acidsploit/pyxpub.git pyxpub
 24 | 
 25 | __setup environment__
 26 | 
 27 |     cd pyxpub/
 28 |     bash setup.sh
 29 | 
 30 | __set xpub key__
 31 | 
 32 | Copy your xpub key from an Electron Cash wallet and paste it in the key.list file.
 33 | 
 34 |     echo 'xpub...' > key.list
 35 | 
 36 | __run__
 37 | 
 38 |     cd pyxpub/
 39 |     bash pyxpub.sh
 40 | 
 41 | __access locally__
 42 | 
 43 | Browse to http://localhost:8080
 44 | 
 45 | ## Raspbian Quick Install (uWSGI + NGINX)
 46 | 
 47 | A simple script (raspbian.sh) to deploy pyxpub on a fresh Raspbian installation. Gets you up and running in no time on a Raspberry Pi.
 48 | 
 49 |     sudo apt-get update
 50 |     sudo apt-get upgrade
 51 |     sudo apt-get install git
 52 |     sudo reboot
 53 |     
 54 |     sudo mkdir /srv/wsgi
 55 |     cd /srv/wsgi
 56 |     sudo git clone https://github.com/acidsploit/pyxpub.git
 57 |     cd pyxpub/
 58 |     echo 'xpub...' > key.list
 59 |     sudo bash raspbian.sh
 60 |     
 61 | Access pyxpub through your raspberry pi ip address. Example: http://192.168.1.15
 62 | 
 63 | Monitor the process:
 64 | 
 65 |     sudo tail -f /var/log/uwsgi/app/pyxpub.log
 66 | 
 67 | 
 68 | ## Installation Linux (uWSGI + NGINX)
 69 | __install nginx, uwsgi and uwsgi python plugin__
 70 | 
 71 | Follow your distribution's directions to install these packages.
 72 | 
 73 | __insall pyxpub in appropriate location__
 74 | 
 75 |     cd /srv/http/
 76 |     git clone https://github.com/acidsploit/pyxpub.git pyxpub
 77 |     
 78 |     mkdir /srv/http/public_html/
 79 |     mv pyxpub/react/ public_html/
 80 |     cd pyxpub/
 81 |     bash setup.sh
 82 |     echo 'xpub...' > key.list
 83 |     sudo chown http:http -R /srv/http/pyxpub
 84 |     
 85 |     
 86 | __uWSGI config__
 87 | 
 88 | Create: /etc/uwsgi/pyxpub.ini
 89 | 
 90 |     [uwsgi]
 91 |     socket = /run/uwsgi/%n.sock
 92 |     processes = 4
 93 |     chdir = /srv/http/pyxpub/
 94 |     master = true
 95 |     plugins = python
 96 |     file = xpub.py
 97 |     uid = http
 98 |     gid = http
 99 |     virtualenv = /srv/http/pyxpub/env/
100 |     
101 | __uWSGI start & enable at startup__
102 | 
103 |     sudo systemctl start uwsgi@pyxpub.service
104 |     sudo systemctl enable uwsgi@pyxpub.service
105 | 
106 | 
107 | __setup nginx vhost to reverse proxy uWSGI__
108 | 
109 | Set up a vhost (preferably with ssl) with following locations and uwsgi_pass:
110 | 
111 |     upstream _pyxpub {
112 |         server unix:/run/uwsgi/pyxpub.sock;
113 |     }
114 |     
115 |     server {
116 |         server_name yourserver.com;
117 |         listen 80;
118 | 
119 |         root /srv/http/pyxpub/public_html;
120 |         
121 |         rewrite ^/$ /react permanent;
122 | 
123 |         location /react {
124 |             index index.html;
125 |         }
126 |         
127 |         location /qr {
128 |             try_files $uri @uwsgi;
129 |         }
130 | 
131 |         location /api {
132 |             try_files $uri @uwsgi;
133 |         }
134 | 
135 |         location /embed {
136 |             return 403;
137 |         }
138 | 
139 |         location @uwsgi {
140 |                 include uwsgi_params;
141 |                 uwsgi_pass _pyxpub;
142 |         }
143 |     }
144 | 
145 | __NGINX start & enable at startup__ 
146 | 
147 |     sudo systemctl start nginx.service
148 |     sudo systemctl enable nginx.service
149 | 
150 | 
151 | ## Usage
152 | ### Direct browser access
153 | http://localhost:8080
154 | This will open the React Point-of-Sale app.
155 | 
156 |     
157 | ### JSON
158 | 
159 | __payment request /api/payment__
160 | 
161 | Generate new payment request.
162 | 
163 | Options:
164 | * amount
165 | * label
166 | 
167 | 
168 |         curl 'http://localhost:8080/api/payment?amount=0.0023&label=SHOP:1Wed2B44'
169 | 
170 |         {
171 |         "payment": {
172 |           "amount": "0.0023", 
173 |           "addr": "bitcoincash:qpej4uw429m9m0wawcphw9v4sch2ymd6qsqh7jx9gl", 
174 |           "legacy_addr": "1BVx9uf5UGJDt1eMqjut8qh1K4mmEeDSFQ", 
175 |           "label": "SHOP:1Wed2B44", 
176 |           "qr_img": "/qr?addr=bitcoincash:qpej4uw429m9m0wawcphw9v4sch2ymd6qsqh7jx9gl&amount=0.0023&label=SHOP:1Wed2B44", 
177 |           "payment_uri": "bitcoincash:qpej4uw429m9m0wawcphw9v4sch2ymd6qsqh7jx9gl?amount=0.0023&message=SHOP:1Wed2B44"
178 |           }
179 |         }
180 |         
181 | __payment verification request /api/verify__
182 | 
183 | Verify payment of payment request
184 | 
185 | Options:
186 | * addr
187 | * amount
188 | 
189 | or
190 | 
191 | * label
192 | 
193 |       curl 'http://localhost:8080/api/verify?addr=bitcoincash:qpemxfnepk9f0g2yzgsyk4ynnklaaunr7g99rrwas9&amount=0.0023'
194 |       
195 |       {"received": 0}
196 |       or 
197 |       {"received": 1}
198 | 
199 | __sales ledger request /api/ledger__
200 | 
201 | Fetch sales ledger.
202 | 
203 |     curl 'http://localhost:8080/api/ledger'
204 |       
205 |       {
206 |        "1":{
207 |           "id":1,
208 |           "timestamp":1519152761.0008476,
209 |           "addr":"bitcoincash:qzwdulf49wfmalj6a36gn2h5ncvrxmw98ydzhxe7gz",
210 |           "amount":"0.00040650",
211 |           "label":"DEVZERO.BE:5cc4f403-9351-42f1-8850-a50735f921fd",
212 |           "received":1,
213 |           "confirmations":0,
214 |           "txid":"5bae0304eb76e78167af30fe6b98f83462828ae974b9c7bc236ebb5b7a9d9e26"
215 |        },
216 |        "2":{
217 |           "id":2,
218 |           "timestamp":1519159704.388939,
219 |           "addr":"bitcoincash:qpej4uw429m9m0wawcphw9v4sch2ymd6qsqh7jx9gl",
220 |           "amount":"0.00976920",
221 |           "label":"DEVZERO.BE:7d2cc3a5-9a6b-4112-b8ac-c60f89d28408",
222 |           "received":0,
223 |           "confirmations":0,
224 |           "txid":"NoTX"
225 |        },
226 |        "3":{
227 |           "id":3,
228 |           "timestamp":1519220076.8360977,
229 |           "addr":"bitcoincash:qpemxfnepk9f0g2yzgsyk4ynnklaaunr7g99rrwas9",
230 |           "amount":"0.0023",
231 |           "label":"SHOP:1Wed2B44",
232 |           "received":0,
233 |           "confirmations":0,
234 |           "txid":"NoTX"
235 |        }
236 |     }
237 | 
238 | __exchange rate request /api/rate__
239 | 
240 | Fetch exchange rate or list supported currencies for specified source.
241 | 
242 | Options:
243 | 
244 | * source (cryptocompate, kraken, coinbase)
245 | * currency
246 | 
247 |  => Returns exchange rate for requested source and currency
248 |  
249 | or
250 | 
251 | * source (cryptocompate, kraken, coinbase)
252 | 
253 |  => Returns array of supported currencies for specified source
254 |  
255 |  
256 |     curl 'http://localhost:8080/api/rate?source=cryptocompare'
257 |     
258 |     {
259 |       "currencies": ["EUR", 
260 |                      "USD", 
261 |                      "GBP", 
262 |                      "AUD", 
263 |                      "BRL", 
264 |                      "CAD", 
265 |                      "CHF", 
266 |                      "CLP", 
267 |                      "CNY", 
268 |                      "CZK", 
269 |                      "DKK", 
270 |                      "HKD", 
271 |                      "HUF", 
272 |                      "IDR", 
273 |                      "ILS", 
274 |                      "INR", 
275 |                      "JPY", 
276 |                      "KRW", 
277 |                      "MXN", 
278 |                      "MYR", 
279 |                      "NOK", 
280 |                      "NZD", 
281 |                      "PHP", 
282 |                      "PKR", 
283 |                      "PLN", 
284 |                      "RUB", 
285 |                      "SEK", 
286 |                      "SGD", 
287 |                      "THB", 
288 |                      "TRY", 
289 |                      "TWD", 
290 |                      "ZAR"]
291 |     }
292 |     
293 |     curl 'http://localhost:8080/api/rate?source=kraken'
294 |     
295 |     {
296 |       "currencies": ["EUR", 
297 |                      "USD"]
298 |     }
299 | 
300 |     curl 'http://localhost:8080/api/rate?source=kraken¤cy=EUR'
301 |     
302 |     {
303 |       "currency": "EUR", 
304 |       "price": 953.8
305 |     }
306 | 
307 | 
308 | 
309 | ### QR image only
310 | 
311 |     http://localhost:8080/qr?addr=bitcoincash:qpej4uw429m9m0wawcphw9v4sch2ymd6qsqh7jx9gl&amount=0.0023&label=SHOP:PAYM123
312 | 
313 | 


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/xpub.py:
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  1 | #!/usr/bin/env python3
  2 | 
  3 | import sys
  4 | import os
  5 | import re
  6 | import datetime
  7 | import qrcode
  8 | import io
  9 | import random
 10 | import base64
 11 | import json
 12 | import time
 13 | 
 14 | #dataset
 15 | import dataset
 16 | from stuf import stuf
 17 | 
 18 | # Bottle
 19 | from bottle import Bottle, route, request, response, get, post, abort, debug, template, static_file, redirect, run
 20 | 
 21 | # MTServer - Multi Threaded wsgi server
 22 | from mtbottle import MTServer
 23 | 
 24 | # Paste - Multi Threaded wsgi server
 25 | from paste import httpserver
 26 | 
 27 | 
 28 | #bitcoin stuff
 29 | import pycoin.key
 30 | os.environ["PYCOIN_NATIVE"]="openssl"
 31 | from cashaddress import convert
 32 | 
 33 | import verify_tx
 34 | import exchangerate
 35 | 
 36 | debug(True)
 37 | 
 38 | db_name = 'sqlite:///pyxpub.db?check_same_thread=False'
 39 | 
 40 | 
 41 | # Look for the directory containing the configuration files
 42 | def find_data_dir():
 43 |   lib_dir = os.path.dirname(os.path.abspath(__file__))
 44 |   data_dir_locations = [
 45 |     os.path.join(os.path.expanduser('~'), '.pyxpub'),
 46 |     os.path.join(os.path.expanduser('~'), '.config', 'pyxpub'),
 47 |     lib_dir,
 48 |     os.getcwd()
 49 |   ]
 50 |   if len(sys.argv) > 1:
 51 |     if sys.argv[1] == '-h' or sys.argv[1] == '--help':
 52 |       print(usage)
 53 |       sys.exit(0)
 54 |     else:
 55 |       data_dir_locations.insert(0, os.path.abspath(sys.argv[1]))
 56 |       if not os.path.isdir(data_dir_locations[0]):
 57 |         print('No such directory: ' + data_dir_locations[0])
 58 |   for data_dir in data_dir_locations:
 59 |     try:
 60 |       os.chdir(data_dir)
 61 |     except (OSError):
 62 |       continue
 63 |     if os.path.isfile('key.list'):
 64 |       print('Using {dir} as data directory'.format(dir=data_dir))
 65 |       break
 66 |     
 67 | def init_db():
 68 |   db = dataset.connect(db_name, row_type=stuf)
 69 |     
 70 |   return db
 71 | 
 72 | def get_wallet_index():
 73 |   _db = init_db()
 74 |   _id = 0
 75 |   results = _db.query('SELECT MAX(id) as id FROM payment_requests')
 76 | 
 77 |   for result in results:
 78 |     if (result.id):
 79 |       _id = result.id
 80 |   
 81 |   return _id
 82 | 
 83 | # Read the xpub key from  key.list file
 84 | def get_xpub():
 85 |   _xpub = 0
 86 |   try:
 87 |     f = open('key.list', 'r')
 88 |     for line in f.readlines():
 89 |       _key = line.strip()
 90 |       pattern = re.compile("xpub")
 91 |       if pattern.match(_key, 0):
 92 |         _xpub = pycoin.key.Key.from_text(_key)
 93 |         f.close()
 94 |         return _xpub
 95 |     f.close()
 96 |     if _xpub == 0:
 97 |       print('ERROR: No xpub in key.list')
 98 |       sys.exit(2)
 99 |   except (IOError, OSError, FileNotFoundError, PermissionError):
100 |     print('ERROR: Could not open key.list')
101 |     sys.exit(2)
102 | 
103 | # Derive address from xpub key and increment address index
104 | def get_xpub_address(xpub, index):
105 |   # 0 => public addresses
106 |   # 1 => change addresses, only for internal use
107 |   account_type = 0
108 |   xpub_subkey = xpub.subkey(account_type)
109 |   addr = xpub_subkey.subkey(index).bitcoin_address()
110 |   caddr = convert.to_cash_address(addr)
111 |   #print(caddr)
112 |   
113 |   #return caddr.upper()
114 |   return caddr
115 | 
116 | def get_payment_by_ip(ip):
117 |   _db = init_db()
118 |   _table = _db['payment_requests']
119 |   _payment = _table.find_one(ip=ip)
120 |   if _payment:
121 |     return _payment
122 |   else:
123 |     return False
124 |   
125 | def get_payment_by_label(label):
126 |   _db = init_db()
127 |   _table = _db['payment_requests']
128 |   _payment = _table.find_one(label=label)
129 |   if _payment:
130 |     return _payment
131 |   else:
132 |     return False
133 |   
134 | def get_payment_by_addr(addr):
135 |   _db = init_db()
136 |   _table = _db['payment_requests']
137 |   _payment = _table.find_one(addr=addr)
138 |   if _payment:
139 |     return _payment
140 |   else:
141 |     return False
142 | 
143 | def update_payment_received(payment_id, received, txid):
144 |   _db = init_db()
145 |   _table = _db['payment_requests']
146 | 
147 |   _table.update(dict(id=payment_id, received=received, txid=txid), ['id'])
148 |   
149 | def get_address(ip_addr, amount="", label=""):
150 |   _payment = False
151 |   _order = 0
152 |   #if ratelimit_ip:
153 |     #_payment = get_payment_by_ip(ip_addr)
154 |   #if ratelimit_label and label:
155 |     #_payment = get_payment_by_label(label)
156 |     
157 |   if label:
158 |     _db = init_db()
159 |     _table = _db['order_items']
160 |     _item = _table.find_one(label=label)
161 |     if _item:
162 |       _order = 1
163 |   
164 |   if _payment:
165 |     _addr =  _payment.addr
166 |     return _addr
167 |   else:
168 |     _xpub = get_xpub()
169 |     _index = get_wallet_index()
170 |     _addr = get_xpub_address(_xpub, _index)
171 |     with dataset.connect(db_name, row_type=stuf) as tx:
172 |       tx['payment_requests'].insert(dict(timestamp=time.time(), ip=ip_addr, addr=_addr, amount=amount, label=label, received=0, confirmations=0, txid="NoTX", order=_order))
173 |     return _addr
174 |   
175 | def generate_payment(parameters, ip_addr):
176 |   _amount = False
177 |   _label = False
178 |   _payment = False
179 |   _uri = ""
180 |   _uri_params = ""
181 |   _qr = "/qr?addr="
182 |   _qr_params = ""
183 |   
184 |   if 'amount' in parameters:
185 |     _amount = parameters.amount
186 |     _qr_params += "&amount=" + _amount
187 |     _uri_params += "?amount=" + _amount
188 |   else:
189 |     abort(400, "Specify an amount!")
190 |   if 'label' in parameters:
191 |     _label = parameters.label
192 |     _qr_params +=  "&label=" + _label
193 |     if _amount:
194 |       _uri_params += "&message=" + _label
195 |     else:
196 |       _uri_params += "?message=" + _label
197 |   
198 |   _addr = get_address(ip_addr, _amount, _label)
199 |   _legacy = convert.to_legacy_address(_addr)
200 |   _qr += _addr + _qr_params
201 |   _uri = _addr + _uri_params + "&editable=false"
202 | 
203 |   _payreq = {
204 |     "payment": {
205 |       "amount": _amount,
206 |       #"addr": _addr.lstrip('BITCOINCASH:'),
207 |       "addr": _addr,
208 |       "legacy_addr": _legacy,
209 |       "label": _label,
210 |       "qr_img": _qr,
211 |       "payment_uri": _uri,
212 |     }
213 |   }
214 |   
215 |   _json = json.dumps(_payreq)
216 |   return _json
217 | 
218 | # Generate QR code and return the image
219 | def get_qr(parameters):
220 |   _addr = False
221 |   _amount = False
222 |   _label = False
223 |   _data = ""
224 |   
225 |   if 'addr' in parameters:
226 |      _addr = parameters.addr.upper()
227 |      #_addr = parameters['addr'][0].rstrip('/')
228 |      _data = _addr
229 |   else:
230 |     abort(401, "Specify address")
231 |      
232 |   if 'amount' in parameters and 'label' in parameters:
233 |     _amount = parameters.amount
234 |     _label = parameters.label
235 |     _data += "?amount=" + _amount
236 |     _data += "&message=" + _label
237 |   elif 'amount' in parameters:
238 |      _amount = parameters.amount
239 |      _data += "?amount=" + _amount
240 |   elif 'label' in parameters:
241 |      _label = parameters.label
242 |      _data += "?message=" + _label
243 |      
244 |   _data += "&editable=false"
245 |      
246 |   #print(_data)
247 |      
248 |   qr = qrcode.QRCode(
249 |     error_correction=qrcode.constants.ERROR_CORRECT_L,
250 |     border=2,
251 |   )
252 |   qr.add_data(_data)
253 | #  qr.add_data(parameters['addr'][0].rstrip('/'))
254 |   qr.make(fit=True)
255 |   img = qr.make_image()
256 |   
257 |   return img
258 | 
259 | def generate_embed(addr, parameters):
260 |   _amount = False
261 |   _label = False
262 |   _qruri = "/qr?addr=" + addr
263 |   _copy = addr
264 |   _amount_label = ""
265 |   
266 |   if 'amount' in parameters:
267 |     _amount = parameters.amount
268 |     _qruri += "&amount=" + _amount
269 |     _amount_label += "AMOUNT: " + _amount + " BCH "
270 |     _copy += "?amount=" + _amount
271 |   if 'label' in parameters:
272 |     _label = parameters.label
273 |     _qruri += "&label=" + _label
274 |     _amount_label += "LABEL: " + _label + " "
275 |     if _amount:
276 |       _copy += "&message=" + _label
277 |     else:
278 |       _copy += "?message=" + _label
279 | 
280 |   filler = {
281 |     'addr': addr,
282 |     'qruri' : _qruri,
283 |     'label' : _amount_label,
284 |     'copy' : _copy,
285 |   }
286 |   html = template('views/qr.html').format(**filler)
287 | 
288 |   return html
289 | 
290 | def generate_ledger(parameters, ip_addr):
291 |   _db = init_db()
292 |   _ledger = {}
293 |   
294 |   for _payment in _db['payment_requests']:
295 |     _data = {
296 |               'id': _payment.id,
297 |               'timestamp': _payment.timestamp,
298 |               'addr': _payment.addr,
299 |               'amount': _payment.amount,
300 |               'label': _payment.label,
301 |               'received': _payment.received,
302 |               'confirmations': _payment.confirmations,
303 |               'txid': _payment.txid,
304 |               'order': _payment.order,
305 |             }
306 |     _ledger[str(_payment.id)] = _data
307 |     
308 |   _json = json.dumps(_ledger)
309 |   return _json
310 | 
311 | def generate_verify(parameters, ip_addr):
312 |   _addr = False
313 |   _amount = False
314 |   _label = False
315 |   _received = False
316 |   _payment = False
317 |   
318 |   # Find payment by label, if not verified, set parameters
319 |   if 'label' in parameters:
320 |     _payment = get_payment_by_label(parameters.label)
321 |     if not _payment:
322 |       abort(400, "ERROR: Unknown Label! - " + parameters.label)
323 |   # Find payment by addr, if not verified, set parameters
324 |   elif 'addr' in parameters and 'amount' in parameters:
325 |     _amount = parameters.amount
326 |     if convert.is_valid(parameters.addr):
327 |       _addr = parameters.addr
328 |       _payment = get_payment_by_addr(_addr)
329 |       if not _payment:
330 |         abort(400, "ERROR: Unknown Payment Address! - " + _addr)
331 |     else:
332 |       abort(400, "Invalid address!")
333 |   else:
334 |     abort(400, "Incorrect use of API, RTFM!")
335 |     
336 |   # TODO: return more payment details. see verify_tx.verify()
337 |   if _payment.received == 1:
338 |     return json.dumps({"received": 1})
339 |   else:
340 |     _addr = _payment.addr
341 |     _amount = _payment.amount
342 |     _label = _payment.label
343 |   
344 |   # If payment not received yet, rescan
345 |   _received = verify_tx.verify(_addr, _amount)
346 |   
347 |   # If rescan has positive result, update payment record in database
348 |   if _received['received'] == 1 and _payment.received == 0:
349 |     update_payment_received(_payment.id, 1, _received['txid'])
350 | 
351 |   # Return verification result
352 |   if _received:
353 |     return json.dumps(_received)
354 |   else:
355 |     return json.dumps({"received": 0})
356 |   
357 | def generate_rate(parameters, ip_addr):
358 |   _currency = ""
359 |   _source = ""
360 |   if 'currency' in parameters and 'source' in parameters:
361 |     if not exchangerate.is_supported(parameters.currency, parameters.source):
362 |       abort(400, "ERROR: Unsupported Currency! => " + parameters.currency)
363 |     else:
364 |       _r = exchangerate.get_rate(parameters.currency, parameters.source)
365 |       _price = {
366 |           'currency': _r.currency,
367 |           'price'   : _r.rate,
368 |         }
369 |       return _price
370 |   # TODO: Error handling is_supported()
371 |   elif 'source' in parameters:
372 |     _r = exchangerate.get_currencies(parameters.source)
373 |     return _r
374 |   else:
375 |     _r = exchangerate.get_sources()
376 |     return _r
377 | 
378 | def generate_order(parameters, ip_addr):
379 |   if 'label' in parameters:
380 |     _order = get_order(parameters.label)
381 |     _items = get_order_items(parameters.label)
382 |     order = {}
383 |     order['label'] = parameters.label
384 |     items = []
385 |     
386 |     for _item in _items:
387 |       item = {
388 |                 'id': _item.item_id,
389 |                 'timestamp': _item.timestamp,
390 |                 'name': _item.name,
391 |                 'currency': _item.currency,
392 |                 'bch': _item.bch,
393 |                 'count': _item.count,
394 |                 'exchangeRATE': _item.exchange_rate,
395 |               }
396 |       items.append(item)
397 |       
398 |     for _element in _order:
399 |       #print(_element.label, _element.type)
400 |       order['timestamp'] = _element.timestamp
401 |       order[_element.type] = _element.data
402 |       
403 |     
404 |     order['items'] = items
405 |     
406 |     #print(order)
407 |     return order
408 |     
409 |   return { 'error': 0 }
410 |   
411 | def get_order(label):
412 |   _db = init_db()
413 |   _table = _db['orders']
414 |   _order = _table.find(label=label)
415 |   
416 |   return _order
417 | 
418 | def get_order_items(label):
419 |   _db = init_db()
420 |   _table = _db['order_items']
421 |   _items = _table.find(label=label)
422 |   
423 |   return _items
424 |   
425 | 
426 | def set_headers(environ):
427 |   if  'HTTP_ORIGIN' in environ:
428 |     origin = environ['HTTP_ORIGIN']
429 |     response.set_header("Access-Control-Allow-Origin", str(origin))
430 |     response.set_header("Access-Control-Allow-Credentials", "true")
431 |     response.set_header("Access-Control-Allow-Methods", "GET, POST, OPTIONS")
432 |     response.set_header("Access-Control-Allow-Headers", "Content-Type")
433 |     response.set_header("Access-Control-Request-Headers", "X-Requested-With, accept, content-type")
434 |     
435 |     
436 |   #response.set_header("Access-Control-Allow-Origin", "*")
437 |   #response.set_header("Access-Control-Allow-Credentials", "true")
438 | 
439 | # Init bottle framework
440 | app = application = Bottle()
441 | 
442 | @app.route('/')
443 | @app.route('/react')
444 | def root():
445 |   redirect("/react/")
446 | 
447 | @app.route('/embed')
448 | def embed():
449 |   set_headers(request.environ)
450 |   response.content_type = 'text/html; charset=utf-8' 
451 |   
452 |   _ip = request.environ.get('REMOTE_ADDR')
453 |   _parameters = request.query
454 |   
455 |   _addr = get_address(_ip)
456 |   _html = generate_embed(_addr, _parameters)
457 |   
458 |   return _html
459 | 
460 | @app.route('/qr')
461 | def qr():
462 |   set_headers(request.environ)
463 |   response.content_type = 'image/png'
464 |   
465 |   _ip = request.environ.get('REMOTE_ADDR')
466 |   _parameters = request.query
467 |   _qr = get_qr(_parameters)
468 |   _output = io.BytesIO()
469 |   _qr.save(_output, format='PNG')
470 |   
471 |   return _output.getvalue()
472 |   
473 | @app.route('/api/payment')
474 | def payment():
475 |   set_headers(request.environ)
476 |   response.content_type = 'application/json'
477 |   
478 |   _ip = request.environ.get('REMOTE_ADDR')
479 |   _parameters = request.query
480 |   _payment = generate_payment(_parameters, _ip)
481 |   
482 |   return _payment
483 |   
484 | @app.route('/api/verify')
485 | def verify():
486 |   set_headers(request.environ)
487 |   response.content_type = 'application/json'
488 |   
489 |   _ip = request.environ.get('REMOTE_ADDR')
490 |   _parameters = request.query
491 |   _verify = generate_verify(_parameters, _ip)
492 |   
493 |   return _verify
494 |   
495 | @app.route('/api/ledger')
496 | def ledger():
497 |   set_headers(request.environ)
498 |   response.content_type = 'application/json'
499 |   
500 |   _ip = request.environ.get('REMOTE_ADDR')
501 |   _parameters = request.query
502 |   _ledger = generate_ledger(_parameters, _ip)
503 |   
504 |   return _ledger
505 | 
506 | @app.route('/api/rate')
507 | def rate():
508 |   set_headers(request.environ)
509 |   response.content_type = 'application/json'
510 |   
511 |   _ip = request.environ.get('REMOTE_ADDR')
512 |   _parameters = request.query
513 |   _rate = generate_rate(_parameters, _ip)
514 |   
515 |   return _rate
516 | 
517 | @app.route('/api/order')
518 | def order():
519 |   set_headers(request.environ)
520 |   response.content_type = 'application/json'
521 |   
522 |   _ip = request.environ.get('REMOTE_ADDR')
523 |   _parameters = request.query
524 |   _order = generate_order(_parameters, _ip)
525 |   
526 |   return _order
527 | 
528 | @app.route('/api/ping')
529 | def ping():
530 |   set_headers(request.environ)
531 |   response.content_type = 'application/json'
532 |   
533 |   _ip = request.environ.get('REMOTE_ADDR')
534 |   _parameters = request.query
535 |   
536 |   _pong = { 'pong': 1 }
537 |   
538 |   return _pong
539 | 
540 | @app.route('/api/order', method=['POST', 'OPTIONS'])
541 | def order():
542 |   set_headers(request.environ)
543 |   response.content_type = 'application/json'
544 |   
545 |   if request.method == 'POST':
546 |     _now = time.time()
547 |     _json = request.json
548 |     
549 |     label = _json['label']
550 |     items = _json['items']
551 |     subtotalBCH = _json['subtotalBCH']
552 |     
553 |     discount = _json['discount']
554 |     discountBCH = _json['discountBCH']
555 |     tax = _json['tax']
556 |     taxBCH = _json['taxBCH']
557 |     
558 |     totalBCH = _json['totalBCH']
559 |     exchangeRATE = _json['exchangeRATE']
560 |     currency = _json['currency']
561 |     
562 |     for key in _json:
563 |       if (key == 'items'):
564 |         for item in _json[key]:
565 |           print("INSERT item   (" + label + "): " + item['name'] + " => " + item['bch'])
566 |           with dataset.connect(db_name, row_type=stuf) as tx:
567 |             tx['order_items'].insert(dict(label=label, timestamp=item['timestamp'], item_id=item['id'], name=item['name'], currency=item['currency'], bch=item['bch'], count=item['count'], exchange_rate=item['exchangeRATE']))
568 |       elif (key != 'label' and key != 'items'):
569 |         print("INSERT order (" + label + "): " + key + " => " + str(_json[key]))
570 |         with dataset.connect(db_name, row_type=stuf) as tx:
571 |           tx['orders'].insert(dict(label=label, timestamp=_now, type=key, data=_json[key]))
572 | 
573 | 
574 | # Serve static files
575 | @app.route('/static/')
576 | def send_static(filename):
577 |   set_headers(request.environ)
578 |   return static_file(filename, root="static/")
579 | 
580 | @app.route('/react/', strict_slashes=False)
581 | @app.route('/react/')
582 | def react(filename='index.html'):
583 |   set_headers(request.environ)
584 |   return static_file(filename, root="react/")
585 | 
586 | 
587 | def main():
588 |   # init
589 |   find_data_dir()
590 |   index = get_wallet_index()
591 |   xpub = get_xpub()
592 |   print('Wallet using xpub key: ' + xpub.as_text()[:20] + '...' + xpub.as_text()[-8:])
593 |   print('Starting wallet at index: ' + str(index))
594 |   
595 |   # MTServer wsgi server
596 |   app.run(server=MTServer, host='0.0.0.0', port=8080, thread_count=3)
597 |   
598 |   # Paste wsgi server
599 |   #httpserver.serve(app, host='0.0.0.0', port=8080)
600 |   
601 |   #start_server()
602 |   
603 | 
604 | if __name__ == "__main__":
605 |   main()
606 | 


--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
  1 |                     GNU GENERAL PUBLIC LICENSE
  2 |                        Version 3, 29 June 2007
  3 | 
  4 |  Copyright (C) 2007 Free Software Foundation, Inc. 
  5 |  Everyone is permitted to copy and distribute verbatim copies
  6 |  of this license document, but changing it is not allowed.
  7 | 
  8 |                             Preamble
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 11 | software and other kinds of works.
 12 | 
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 20 | your programs, too.
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 27 | free programs, and that you know you can do these things.
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 45 | that there is no warranty for this free software.  For both users' and
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115 | for making modifications to it.  "Object code" means any non-source
116 | form of a work.
117 | 
118 |   A "Standard Interface" means an interface that either is an official
119 | standard defined by a recognized standards body, or, in the case of
120 | interfaces specified for a particular programming language, one that
121 | is widely used among developers working in that language.
122 | 
123 |   The "System Libraries" of an executable work include anything, other
124 | than the work as a whole, that (a) is included in the normal form of
125 | packaging a Major Component, but which is not part of that Major
126 | Component, and (b) serves only to enable use of the work with that
127 | Major Component, or to implement a Standard Interface for which an
128 | implementation is available to the public in source code form.  A
129 | "Major Component", in this context, means a major essential component
130 | (kernel, window system, and so on) of the specific operating system
131 | (if any) on which the executable work runs, or a compiler used to
132 | produce the work, or an object code interpreter used to run it.
133 | 
134 |   The "Corresponding Source" for a work in object code form means all
135 | the source code needed to generate, install, and (for an executable
136 | work) run the object code and to modify the work, including scripts to
137 | control those activities.  However, it does not include the work's
138 | System Libraries, or general-purpose tools or generally available free
139 | programs which are used unmodified in performing those activities but
140 | which are not part of the work.  For example, Corresponding Source
141 | includes interface definition files associated with source files for
142 | the work, and the source code for shared libraries and dynamically
143 | linked subprograms that the work is specifically designed to require,
144 | such as by intimate data communication or control flow between those
145 | subprograms and other parts of the work.
146 | 
147 |   The Corresponding Source need not include anything that users
148 | can regenerate automatically from other parts of the Corresponding
149 | Source.
150 | 
151 |   The Corresponding Source for a work in source code form is that
152 | same work.
153 | 
154 |   2. Basic Permissions.
155 | 
156 |   All rights granted under this License are granted for the term of
157 | copyright on the Program, and are irrevocable provided the stated
158 | conditions are met.  This License explicitly affirms your unlimited
159 | permission to run the unmodified Program.  The output from running a
160 | covered work is covered by this License only if the output, given its
161 | content, constitutes a covered work.  This License acknowledges your
162 | rights of fair use or other equivalent, as provided by copyright law.
163 | 
164 |   You may make, run and propagate covered works that you do not
165 | convey, without conditions so long as your license otherwise remains
166 | in force.  You may convey covered works to others for the sole purpose
167 | of having them make modifications exclusively for you, or provide you
168 | with facilities for running those works, provided that you comply with
169 | the terms of this License in conveying all material for which you do
170 | not control copyright.  Those thus making or running the covered works
171 | for you must do so exclusively on your behalf, under your direction
172 | and control, on terms that prohibit them from making any copies of
173 | your copyrighted material outside their relationship with you.
174 | 
175 |   Conveying under any other circumstances is permitted solely under
176 | the conditions stated below.  Sublicensing is not allowed; section 10
177 | makes it unnecessary.
178 | 
179 |   3. Protecting Users' Legal Rights From Anti-Circumvention Law.
180 | 
181 |   No covered work shall be deemed part of an effective technological
182 | measure under any applicable law fulfilling obligations under article
183 | 11 of the WIPO copyright treaty adopted on 20 December 1996, or
184 | similar laws prohibiting or restricting circumvention of such
185 | measures.
186 | 
187 |   When you convey a covered work, you waive any legal power to forbid
188 | circumvention of technological measures to the extent such circumvention
189 | is effected by exercising rights under this License with respect to
190 | the covered work, and you disclaim any intention to limit operation or
191 | modification of the work as a means of enforcing, against the work's
192 | users, your or third parties' legal rights to forbid circumvention of
193 | technological measures.
194 | 
195 |   4. Conveying Verbatim Copies.
196 | 
197 |   You may convey verbatim copies of the Program's source code as you
198 | receive it, in any medium, provided that you conspicuously and
199 | appropriately publish on each copy an appropriate copyright notice;
200 | keep intact all notices stating that this License and any
201 | non-permissive terms added in accord with section 7 apply to the code;
202 | keep intact all notices of the absence of any warranty; and give all
203 | recipients a copy of this License along with the Program.
204 | 
205 |   You may charge any price or no price for each copy that you convey,
206 | and you may offer support or warranty protection for a fee.
207 | 
208 |   5. Conveying Modified Source Versions.
209 | 
210 |   You may convey a work based on the Program, or the modifications to
211 | produce it from the Program, in the form of source code under the
212 | terms of section 4, provided that you also meet all of these conditions:
213 | 
214 |     a) The work must carry prominent notices stating that you modified
215 |     it, and giving a relevant date.
216 | 
217 |     b) The work must carry prominent notices stating that it is
218 |     released under this License and any conditions added under section
219 |     7.  This requirement modifies the requirement in section 4 to
220 |     "keep intact all notices".
221 | 
222 |     c) You must license the entire work, as a whole, under this
223 |     License to anyone who comes into possession of a copy.  This
224 |     License will therefore apply, along with any applicable section 7
225 |     additional terms, to the whole of the work, and all its parts,
226 |     regardless of how they are packaged.  This License gives no
227 |     permission to license the work in any other way, but it does not
228 |     invalidate such permission if you have separately received it.
229 | 
230 |     d) If the work has interactive user interfaces, each must display
231 |     Appropriate Legal Notices; however, if the Program has interactive
232 |     interfaces that do not display Appropriate Legal Notices, your
233 |     work need not make them do so.
234 | 
235 |   A compilation of a covered work with other separate and independent
236 | works, which are not by their nature extensions of the covered work,
237 | and which are not combined with it such as to form a larger program,
238 | in or on a volume of a storage or distribution medium, is called an
239 | "aggregate" if the compilation and its resulting copyright are not
240 | used to limit the access or legal rights of the compilation's users
241 | beyond what the individual works permit.  Inclusion of a covered work
242 | in an aggregate does not cause this License to apply to the other
243 | parts of the aggregate.
244 | 
245 |   6. Conveying Non-Source Forms.
246 | 
247 |   You may convey a covered work in object code form under the terms
248 | of sections 4 and 5, provided that you also convey the
249 | machine-readable Corresponding Source under the terms of this License,
250 | in one of these ways:
251 | 
252 |     a) Convey the object code in, or embodied in, a physical product
253 |     (including a physical distribution medium), accompanied by the
254 |     Corresponding Source fixed on a durable physical medium
255 |     customarily used for software interchange.
256 | 
257 |     b) Convey the object code in, or embodied in, a physical product
258 |     (including a physical distribution medium), accompanied by a
259 |     written offer, valid for at least three years and valid for as
260 |     long as you offer spare parts or customer support for that product
261 |     model, to give anyone who possesses the object code either (1) a
262 |     copy of the Corresponding Source for all the software in the
263 |     product that is covered by this License, on a durable physical
264 |     medium customarily used for software interchange, for a price no
265 |     more than your reasonable cost of physically performing this
266 |     conveying of source, or (2) access to copy the
267 |     Corresponding Source from a network server at no charge.
268 | 
269 |     c) Convey individual copies of the object code with a copy of the
270 |     written offer to provide the Corresponding Source.  This
271 |     alternative is allowed only occasionally and noncommercially, and
272 |     only if you received the object code with such an offer, in accord
273 |     with subsection 6b.
274 | 
275 |     d) Convey the object code by offering access from a designated
276 |     place (gratis or for a charge), and offer equivalent access to the
277 |     Corresponding Source in the same way through the same place at no
278 |     further charge.  You need not require recipients to copy the
279 |     Corresponding Source along with the object code.  If the place to
280 |     copy the object code is a network server, the Corresponding Source
281 |     may be on a different server (operated by you or a third party)
282 |     that supports equivalent copying facilities, provided you maintain
283 |     clear directions next to the object code saying where to find the
284 |     Corresponding Source.  Regardless of what server hosts the
285 |     Corresponding Source, you remain obligated to ensure that it is
286 |     available for as long as needed to satisfy these requirements.
287 | 
288 |     e) Convey the object code using peer-to-peer transmission, provided
289 |     you inform other peers where the object code and Corresponding
290 |     Source of the work are being offered to the general public at no
291 |     charge under subsection 6d.
292 | 
293 |   A separable portion of the object code, whose source code is excluded
294 | from the Corresponding Source as a System Library, need not be
295 | included in conveying the object code work.
296 | 
297 |   A "User Product" is either (1) a "consumer product", which means any
298 | tangible personal property which is normally used for personal, family,
299 | or household purposes, or (2) anything designed or sold for incorporation
300 | into a dwelling.  In determining whether a product is a consumer product,
301 | doubtful cases shall be resolved in favor of coverage.  For a particular
302 | product received by a particular user, "normally used" refers to a
303 | typical or common use of that class of product, regardless of the status
304 | of the particular user or of the way in which the particular user
305 | actually uses, or expects or is expected to use, the product.  A product
306 | is a consumer product regardless of whether the product has substantial
307 | commercial, industrial or non-consumer uses, unless such uses represent
308 | the only significant mode of use of the product.
309 | 
310 |   "Installation Information" for a User Product means any methods,
311 | procedures, authorization keys, or other information required to install
312 | and execute modified versions of a covered work in that User Product from
313 | a modified version of its Corresponding Source.  The information must
314 | suffice to ensure that the continued functioning of the modified object
315 | code is in no case prevented or interfered with solely because
316 | modification has been made.
317 | 
318 |   If you convey an object code work under this section in, or with, or
319 | specifically for use in, a User Product, and the conveying occurs as
320 | part of a transaction in which the right of possession and use of the
321 | User Product is transferred to the recipient in perpetuity or for a
322 | fixed term (regardless of how the transaction is characterized), the
323 | Corresponding Source conveyed under this section must be accompanied
324 | by the Installation Information.  But this requirement does not apply
325 | if neither you nor any third party retains the ability to install
326 | modified object code on the User Product (for example, the work has
327 | been installed in ROM).
328 | 
329 |   The requirement to provide Installation Information does not include a
330 | requirement to continue to provide support service, warranty, or updates
331 | for a work that has been modified or installed by the recipient, or for
332 | the User Product in which it has been modified or installed.  Access to a
333 | network may be denied when the modification itself materially and
334 | adversely affects the operation of the network or violates the rules and
335 | protocols for communication across the network.
336 | 
337 |   Corresponding Source conveyed, and Installation Information provided,
338 | in accord with this section must be in a format that is publicly
339 | documented (and with an implementation available to the public in
340 | source code form), and must require no special password or key for
341 | unpacking, reading or copying.
342 | 
343 |   7. Additional Terms.
344 | 
345 |   "Additional permissions" are terms that supplement the terms of this
346 | License by making exceptions from one or more of its conditions.
347 | Additional permissions that are applicable to the entire Program shall
348 | be treated as though they were included in this License, to the extent
349 | that they are valid under applicable law.  If additional permissions
350 | apply only to part of the Program, that part may be used separately
351 | under those permissions, but the entire Program remains governed by
352 | this License without regard to the additional permissions.
353 | 
354 |   When you convey a copy of a covered work, you may at your option
355 | remove any additional permissions from that copy, or from any part of
356 | it.  (Additional permissions may be written to require their own
357 | removal in certain cases when you modify the work.)  You may place
358 | additional permissions on material, added by you to a covered work,
359 | for which you have or can give appropriate copyright permission.
360 | 
361 |   Notwithstanding any other provision of this License, for material you
362 | add to a covered work, you may (if authorized by the copyright holders of
363 | that material) supplement the terms of this License with terms:
364 | 
365 |     a) Disclaiming warranty or limiting liability differently from the
366 |     terms of sections 15 and 16 of this License; or
367 | 
368 |     b) Requiring preservation of specified reasonable legal notices or
369 |     author attributions in that material or in the Appropriate Legal
370 |     Notices displayed by works containing it; or
371 | 
372 |     c) Prohibiting misrepresentation of the origin of that material, or
373 |     requiring that modified versions of such material be marked in
374 |     reasonable ways as different from the original version; or
375 | 
376 |     d) Limiting the use for publicity purposes of names of licensors or
377 |     authors of the material; or
378 | 
379 |     e) Declining to grant rights under trademark law for use of some
380 |     trade names, trademarks, or service marks; or
381 | 
382 |     f) Requiring indemnification of licensors and authors of that
383 |     material by anyone who conveys the material (or modified versions of
384 |     it) with contractual assumptions of liability to the recipient, for
385 |     any liability that these contractual assumptions directly impose on
386 |     those licensors and authors.
387 | 
388 |   All other non-permissive additional terms are considered "further
389 | restrictions" within the meaning of section 10.  If the Program as you
390 | received it, or any part of it, contains a notice stating that it is
391 | governed by this License along with a term that is a further
392 | restriction, you may remove that term.  If a license document contains
393 | a further restriction but permits relicensing or conveying under this
394 | License, you may add to a covered work material governed by the terms
395 | of that license document, provided that the further restriction does
396 | not survive such relicensing or conveying.
397 | 
398 |   If you add terms to a covered work in accord with this section, you
399 | must place, in the relevant source files, a statement of the
400 | additional terms that apply to those files, or a notice indicating
401 | where to find the applicable terms.
402 | 
403 |   Additional terms, permissive or non-permissive, may be stated in the
404 | form of a separately written license, or stated as exceptions;
405 | the above requirements apply either way.
406 | 
407 |   8. Termination.
408 | 
409 |   You may not propagate or modify a covered work except as expressly
410 | provided under this License.  Any attempt otherwise to propagate or
411 | modify it is void, and will automatically terminate your rights under
412 | this License (including any patent licenses granted under the third
413 | paragraph of section 11).
414 | 
415 |   However, if you cease all violation of this License, then your
416 | license from a particular copyright holder is reinstated (a)
417 | provisionally, unless and until the copyright holder explicitly and
418 | finally terminates your license, and (b) permanently, if the copyright
419 | holder fails to notify you of the violation by some reasonable means
420 | prior to 60 days after the cessation.
421 | 
422 |   Moreover, your license from a particular copyright holder is
423 | reinstated permanently if the copyright holder notifies you of the
424 | violation by some reasonable means, this is the first time you have
425 | received notice of violation of this License (for any work) from that
426 | copyright holder, and you cure the violation prior to 30 days after
427 | your receipt of the notice.
428 | 
429 |   Termination of your rights under this section does not terminate the
430 | licenses of parties who have received copies or rights from you under
431 | this License.  If your rights have been terminated and not permanently
432 | reinstated, you do not qualify to receive new licenses for the same
433 | material under section 10.
434 | 
435 |   9. Acceptance Not Required for Having Copies.
436 | 
437 |   You are not required to accept this License in order to receive or
438 | run a copy of the Program.  Ancillary propagation of a covered work
439 | occurring solely as a consequence of using peer-to-peer transmission
440 | to receive a copy likewise does not require acceptance.  However,
441 | nothing other than this License grants you permission to propagate or
442 | modify any covered work.  These actions infringe copyright if you do
443 | not accept this License.  Therefore, by modifying or propagating a
444 | covered work, you indicate your acceptance of this License to do so.
445 | 
446 |   10. Automatic Licensing of Downstream Recipients.
447 | 
448 |   Each time you convey a covered work, the recipient automatically
449 | receives a license from the original licensors, to run, modify and
450 | propagate that work, subject to this License.  You are not responsible
451 | for enforcing compliance by third parties with this License.
452 | 
453 |   An "entity transaction" is a transaction transferring control of an
454 | organization, or substantially all assets of one, or subdividing an
455 | organization, or merging organizations.  If propagation of a covered
456 | work results from an entity transaction, each party to that
457 | transaction who receives a copy of the work also receives whatever
458 | licenses to the work the party's predecessor in interest had or could
459 | give under the previous paragraph, plus a right to possession of the
460 | Corresponding Source of the work from the predecessor in interest, if
461 | the predecessor has it or can get it with reasonable efforts.
462 | 
463 |   You may not impose any further restrictions on the exercise of the
464 | rights granted or affirmed under this License.  For example, you may
465 | not impose a license fee, royalty, or other charge for exercise of
466 | rights granted under this License, and you may not initiate litigation
467 | (including a cross-claim or counterclaim in a lawsuit) alleging that
468 | any patent claim is infringed by making, using, selling, offering for
469 | sale, or importing the Program or any portion of it.
470 | 
471 |   11. Patents.
472 | 
473 |   A "contributor" is a copyright holder who authorizes use under this
474 | License of the Program or a work on which the Program is based.  The
475 | work thus licensed is called the contributor's "contributor version".
476 | 
477 |   A contributor's "essential patent claims" are all patent claims
478 | owned or controlled by the contributor, whether already acquired or
479 | hereafter acquired, that would be infringed by some manner, permitted
480 | by this License, of making, using, or selling its contributor version,
481 | but do not include claims that would be infringed only as a
482 | consequence of further modification of the contributor version.  For
483 | purposes of this definition, "control" includes the right to grant
484 | patent sublicenses in a manner consistent with the requirements of
485 | this License.
486 | 
487 |   Each contributor grants you a non-exclusive, worldwide, royalty-free
488 | patent license under the contributor's essential patent claims, to
489 | make, use, sell, offer for sale, import and otherwise run, modify and
490 | propagate the contents of its contributor version.
491 | 
492 |   In the following three paragraphs, a "patent license" is any express
493 | agreement or commitment, however denominated, not to enforce a patent
494 | (such as an express permission to practice a patent or covenant not to
495 | sue for patent infringement).  To "grant" such a patent license to a
496 | party means to make such an agreement or commitment not to enforce a
497 | patent against the party.
498 | 
499 |   If you convey a covered work, knowingly relying on a patent license,
500 | and the Corresponding Source of the work is not available for anyone
501 | to copy, free of charge and under the terms of this License, through a
502 | publicly available network server or other readily accessible means,
503 | then you must either (1) cause the Corresponding Source to be so
504 | available, or (2) arrange to deprive yourself of the benefit of the
505 | patent license for this particular work, or (3) arrange, in a manner
506 | consistent with the requirements of this License, to extend the patent
507 | license to downstream recipients.  "Knowingly relying" means you have
508 | actual knowledge that, but for the patent license, your conveying the
509 | covered work in a country, or your recipient's use of the covered work
510 | in a country, would infringe one or more identifiable patents in that
511 | country that you have reason to believe are valid.
512 | 
513 |   If, pursuant to or in connection with a single transaction or
514 | arrangement, you convey, or propagate by procuring conveyance of, a
515 | covered work, and grant a patent license to some of the parties
516 | receiving the covered work authorizing them to use, propagate, modify
517 | or convey a specific copy of the covered work, then the patent license
518 | you grant is automatically extended to all recipients of the covered
519 | work and works based on it.
520 | 
521 |   A patent license is "discriminatory" if it does not include within
522 | the scope of its coverage, prohibits the exercise of, or is
523 | conditioned on the non-exercise of one or more of the rights that are
524 | specifically granted under this License.  You may not convey a covered
525 | work if you are a party to an arrangement with a third party that is
526 | in the business of distributing software, under which you make payment
527 | to the third party based on the extent of your activity of conveying
528 | the work, and under which the third party grants, to any of the
529 | parties who would receive the covered work from you, a discriminatory
530 | patent license (a) in connection with copies of the covered work
531 | conveyed by you (or copies made from those copies), or (b) primarily
532 | for and in connection with specific products or compilations that
533 | contain the covered work, unless you entered into that arrangement,
534 | or that patent license was granted, prior to 28 March 2007.
535 | 
536 |   Nothing in this License shall be construed as excluding or limiting
537 | any implied license or other defenses to infringement that may
538 | otherwise be available to you under applicable patent law.
539 | 
540 |   12. No Surrender of Others' Freedom.
541 | 
542 |   If conditions are imposed on you (whether by court order, agreement or
543 | otherwise) that contradict the conditions of this License, they do not
544 | excuse you from the conditions of this License.  If you cannot convey a
545 | covered work so as to satisfy simultaneously your obligations under this
546 | License and any other pertinent obligations, then as a consequence you may
547 | not convey it at all.  For example, if you agree to terms that obligate you
548 | to collect a royalty for further conveying from those to whom you convey
549 | the Program, the only way you could satisfy both those terms and this
550 | License would be to refrain entirely from conveying the Program.
551 | 
552 |   13. Use with the GNU Affero General Public License.
553 | 
554 |   Notwithstanding any other provision of this License, you have
555 | permission to link or combine any covered work with a work licensed
556 | under version 3 of the GNU Affero General Public License into a single
557 | combined work, and to convey the resulting work.  The terms of this
558 | License will continue to apply to the part which is the covered work,
559 | but the special requirements of the GNU Affero General Public License,
560 | section 13, concerning interaction through a network will apply to the
561 | combination as such.
562 | 
563 |   14. Revised Versions of this License.
564 | 
565 |   The Free Software Foundation may publish revised and/or new versions of
566 | the GNU General Public License from time to time.  Such new versions will
567 | be similar in spirit to the present version, but may differ in detail to
568 | address new problems or concerns.
569 | 
570 |   Each version is given a distinguishing version number.  If the
571 | Program specifies that a certain numbered version of the GNU General
572 | Public License "or any later version" applies to it, you have the
573 | option of following the terms and conditions either of that numbered
574 | version or of any later version published by the Free Software
575 | Foundation.  If the Program does not specify a version number of the
576 | GNU General Public License, you may choose any version ever published
577 | by the Free Software Foundation.
578 | 
579 |   If the Program specifies that a proxy can decide which future
580 | versions of the GNU General Public License can be used, that proxy's
581 | public statement of acceptance of a version permanently authorizes you
582 | to choose that version for the Program.
583 | 
584 |   Later license versions may give you additional or different
585 | permissions.  However, no additional obligations are imposed on any
586 | author or copyright holder as a result of your choosing to follow a
587 | later version.
588 | 
589 |   15. Disclaimer of Warranty.
590 | 
591 |   THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
592 | APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
593 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
594 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
595 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
596 | PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
597 | IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
598 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
599 | 
600 |   16. Limitation of Liability.
601 | 
602 |   IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
610 | SUCH DAMAGES.
611 | 
612 |   17. Interpretation of Sections 15 and 16.
613 | 
614 |   If the disclaimer of warranty and limitation of liability provided
615 | above cannot be given local legal effect according to their terms,
616 | reviewing courts shall apply local law that most closely approximates
617 | an absolute waiver of all civil liability in connection with the
618 | Program, unless a warranty or assumption of liability accompanies a
619 | copy of the Program in return for a fee.
620 | 
621 |                      END OF TERMS AND CONDITIONS
622 | 
623 |             How to Apply These Terms to Your New Programs
624 | 
625 |   If you develop a new program, and you want it to be of the greatest
626 | possible use to the public, the best way to achieve this is to make it
627 | free software which everyone can redistribute and change under these terms.
628 | 
629 |   To do so, attach the following notices to the program.  It is safest
630 | to attach them to the start of each source file to most effectively
631 | state the exclusion of warranty; and each file should have at least
632 | the "copyright" line and a pointer to where the full notice is found.
633 | 
634 |     
635 |     Copyright (C)   
636 | 
637 |     This program is free software: you can redistribute it and/or modify
638 |     it under the terms of the GNU General Public License as published by
639 |     the Free Software Foundation, either version 3 of the License, or
640 |     (at your option) any later version.
641 | 
642 |     This program is distributed in the hope that it will be useful,
643 |     but WITHOUT ANY WARRANTY; without even the implied warranty of
644 |     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
645 |     GNU General Public License for more details.
646 | 
647 |     You should have received a copy of the GNU General Public License
648 |     along with this program.  If not, see .
649 | 
650 | Also add information on how to contact you by electronic and paper mail.
651 | 
652 |   If the program does terminal interaction, make it output a short
653 | notice like this when it starts in an interactive mode:
654 | 
655 |       Copyright (C)   
656 |     This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
657 |     This is free software, and you are welcome to redistribute it
658 |     under certain conditions; type `show c' for details.
659 | 
660 | The hypothetical commands `show w' and `show c' should show the appropriate
661 | parts of the General Public License.  Of course, your program's commands
662 | might be different; for a GUI interface, you would use an "about box".
663 | 
664 |   You should also get your employer (if you work as a programmer) or school,
665 | if any, to sign a "copyright disclaimer" for the program, if necessary.
666 | For more information on this, and how to apply and follow the GNU GPL, see
667 | .
668 | 
669 |   The GNU General Public License does not permit incorporating your program
670 | into proprietary programs.  If your program is a subroutine library, you
671 | may consider it more useful to permit linking proprietary applications with
672 | the library.  If this is what you want to do, use the GNU Lesser General
673 | Public License instead of this License.  But first, please read
674 | .
675 | 


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5 | 


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