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Davide Alberani 2018-11-28 21:55:54 +01:00
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# toot-my-t-shirt
A work-in-progress project for 35C3 (from an idea by itec)
Still not much to see here: the UI still sucks and very little feedback is given.
# Run
```
./toot-my-t-shirt --debug --mastodon-token=C0FEFE --mastodon-api-url=https://botsin.space/ --default-image-description="a nice description of the picture" --default-message="oh noes, another selfie" --store-dir="/tmp/selfies"
```
# License and copyright
Copyright 2018 Davide Alberani <da@mimante.net>
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

27
ssl/sb-cert.key Normal file
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-----BEGIN RSA PRIVATE KEY-----
MIIEpAIBAAKCAQEAtzZ9xNUK3GiGeQb3HQxjOVwevXa6KSppIJJwyJRkXEI4D6Bb
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-----END RSA PRIVATE KEY-----

19
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-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

27
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-----BEGIN RSA PRIVATE KEY-----
MIIEowIBAAKCAQEAxt1k/FELm3mLD8F5otcOcdSHYSiFDUhIvz4Nc3YoWhCIjRRd
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-----END RSA PRIVATE KEY-----

21
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@ -0,0 +1,21 @@
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

1
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BF71980112A2E683

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#sb-video {
width: 320px;
height: 240px;
margin: 15px;
float: left;
}
#sb-canvas {
width: 320px;
height: 240px;
margin: 15px;
float: left;
}
button {
clear:both;
margin: 30px;
}

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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>toot-my-t-shirt</title>
<link rel="icon" type="image/png" href="/static/images/sb-favicon.png">
<link rel="stylesheet" type="text/css" href="/static/css/sb.css">
<script type="text/javascript" src="/static/js/sb.js"></script>
</head>
<body>
<div id="main">
<h1>toot-my-t-shirt</h1>
<div id="video-container">
<video id="sb-video" autoplay="true" muted="muted"></video>
</div>
<div id="canvas-container">
<canvas id="sb-canvas"></canvas>
</div>
<button id="init-btn" name="init-btn" onClick="initCamera()">Run!</button>
<button id=take-photo-btn" name="take-photo-btn" onClick="takePhoto()">Take photo!</button>
<button id=send-photo-btn" name="send-photo-btn" onClick="sendPhoto()">Share photo!</button>
<button id=cancel-photo-btn" name="cancel-photo-btn" onClick="cancelPhoto()">Cancel photo</button>
</div>
</body>
</html>

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var countdown = {
_timeout: null,
_stepCb: null,
_timeoutCb: null,
running: false,
seconds: 5,
_initial_seconds: 5,
start: function(seconds, timeoutCb, stepCb) {
countdown.stop();
countdown.seconds = countdown._initial_seconds = seconds || 5;
countdown._timeoutCb = timeoutCb || countdown._timeoutCb;
countdown._stepCb = stepCb || countdown._stepCb;
countdown.running = true;
countdown._step();
},
stop: function() {
if (countdown._timeout) {
window.clearTimeout(countdown._timeout);
}
countdown.running = false;
},
restart: function() {
countdown.start(countdown._initial_seconds);
},
_step: function() {
if (countdown._stepCb) {
countdown._stepCb();
}
if (countdown.seconds === 0) {
if (countdown._timeoutCb) {
countdown._timeoutCb();
}
countdown.stop();
} else {
countdown._decrement();
}
},
_decrement: function() {
countdown.seconds = countdown.seconds - 1;
countdown._timeout = window.setTimeout(function() {
countdown._step();
}, 1000);
}
};
function runCamera(stream) {
console.log("initialize the camera");
var video = document.querySelector("video");
video.width = video.offsetWidth;
video.onloadedmetadata = function() {
video.play();
};
video.srcObject = stream;
}
function sendData(data) {
var xhr = new XMLHttpRequest();
var boundary = "youarenotsupposedtolookatthis";
var formData = new FormData();
formData.append("selfie", new Blob([data]), "selfie.jpeg");
fetch("/publish/", {
method: "POST",
body: formData
}).then(function(response) {
if (response.status !== 200) {
console.log("something went wrong sending the data: " + response.status);
} else {
console.log("photo was sent successfully");
}
cancelPhoto();
}).catch(function(err) {
console.log("something went wrong connecting to server: " + err);
cancelPhoto();
});
}
function cancelPhoto() {
console.log("cancel photo");
var canvas = document.querySelector("canvas");
var context = canvas.getContext("2d");
context.clearRect(0, 0, canvas.width, canvas.height);
countdown.stop();
}
function updateSendCountdown() {
console.log("deleting photo in " + countdown.seconds + " seconds");
}
function isBlank(canvas) {
var blank = document.createElement("canvas");
blank.width = canvas.width;
blank.height = canvas.height;
return canvas.toDataURL() == blank.toDataURL();
}
function sendPhoto() {
console.log("send photo");
countdown.stop();
var canvas = document.querySelector("canvas");
if (isBlank(canvas)) {
console.log("cowardly refuse to send a blank image.")
return;
}
return sendData(canvas.toDataURL("image/jpeg"));
}
function takePhoto() {
console.log("take photo");
var video = document.querySelector("video");
var canvas = document.querySelector("canvas");
var tmpCanvas = document.createElement("canvas");
tmpCanvas.width = video.offsetWidth;
tmpCanvas.height = video.offsetHeight;
var tmpContext = tmpCanvas.getContext("2d");
var tmpRatio = (tmpCanvas.height / tmpCanvas.width);
tmpContext.drawImage(video, 0, 0, video.offsetWidth, video.offsetHeight);
canvas.width = canvas.offsetWidth;
canvas.height = canvas.offsetHeight;
canvas.style.height = parseInt(canvas.offsetWidth * tmpRatio);
var context = canvas.getContext("2d");
var scale = canvas.width / tmpCanvas.width;
context.scale(scale, scale);
context.drawImage(tmpCanvas, 0, 0);
countdown.start(5, cancelPhoto, updateSendCountdown);
}
function initCamera() {
console.log("request camera permission");
var videoObj = {
"video": {
width: 800,
height: 600
},
"audio": false
};
navigator.mediaDevices.getUserMedia(videoObj).then(function(stream) {
runCamera(stream);
}).catch(function(err) {
console.log("unable to open camera");
console.log(err);
});
}

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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""toot-my-t-shirt
Copyright 2018 Davide Alberani <da@mimante.net>
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
"""
import os
import base64
import logging
import tempfile
import datetime
import tornado.httpserver
import tornado.ioloop
from tornado.options import define, options
import tornado.web
from tornado import gen, escape
from mastodon import Mastodon
API_VERSION = '1.0'
class Socialite:
def __init__(self, options):
self.options = options
self.init()
with_mastodon = property(lambda self: self.options.mastodon_token and
self.options.mastodon_api_url)
with_store = property(lambda self: bool(self.options.store_dir))
def init(self):
self.mastodon = None
if self.with_store:
if not os.path.isdir(self.options.store_dir):
os.makedirs(self.options.store_dir)
if self.with_mastodon:
self.mastodon = Mastodon(access_token=self.options.mastodon_token,
api_base_url=self.options.mastodon_api_url)
def post_image(self, img, mime_type='image/jpeg', message=None, description=None):
if message is None:
message = self.options.default_message
if description is None:
description = self.options.default_image_description
if self.with_store:
self.store_image(img, mime_type, message, description)
if self.with_mastodon:
self.mastodon_post_image(img, mime_type, message, description)
def mastodon_post_image(self, img, mime_type, message, description):
mdict = self.mastodon.media_post(media_file=img, mime_type=mime_type, description=description)
media_id = mdict['id']
self.mastodon.status_post(status=message, media_ids=[media_id])
def store_image(self, img, mime_type, message, description):
suffix = '.jpg'
if mime_type:
ms = mime_type.split('/', 1)
if len(ms) == 2 and ms[1]:
suffix = '.' + ms[1]
prefix = str(datetime.datetime.now()).replace(' ', 'T') + '-'
fd, fname = tempfile.mkstemp(suffix=suffix, prefix=prefix, dir=self.options.store_dir)
print(fd, fname)
os.write(fd, img)
os.close(fd)
txt_fname = '%s.info' % fname
with open(txt_fname, 'w') as tfd:
tfd.write('message: %s\n' % message or '')
tfd.write('description: %s\n' % description or '')
class BaseException(Exception):
"""Base class for toot-my-t-shirt custom exceptions.
:param message: text message
:type message: str
:param status: numeric http status code
:type status: int"""
def __init__(self, message, status=400):
super(BaseException, self).__init__(message)
self.message = message
self.status = status
class InputException(BaseException):
"""Exception raised by errors in input handling."""
pass
class BaseHandler(tornado.web.RequestHandler):
"""Base class for request handlers."""
# A property to access the first value of each argument.
arguments = property(lambda self: dict([(k, v[0].decode('utf-8'))
for k, v in self.request.arguments.items()]))
@property
def json_body(self):
"""Return a dictionary from a JSON body.
:returns: a copy of the body arguments
:rtype: dict"""
return escape.json_decode(self.request.body or '{}')
def write_error(self, status_code, **kwargs):
"""Default error handler."""
if isinstance(kwargs.get('exc_info', (None, None))[1], BaseException):
exc = kwargs['exc_info'][1]
status_code = exc.status
message = exc.message
else:
message = 'internal error'
self.build_error(message, status=status_code)
def is_api(self):
"""Return True if the path is from an API call."""
return self.request.path.startswith('/v%s' % API_VERSION)
def initialize(self, **kwargs):
"""Add every passed (key, value) as attributes of the instance."""
for key, value in kwargs.items():
setattr(self, key, value)
def build_error(self, message='', status=400):
"""Build and write an error message.
:param message: textual message
:type message: str
:param status: HTTP status code
:type status: int
"""
self.set_status(status)
self.write({'error': True, 'message': message})
class RootHandler(BaseHandler):
"""Handler for the / path."""
app_path = os.path.join(os.path.dirname(__file__), "static")
@gen.coroutine
def get(self, *args, **kwargs):
# serve the ./static/index.html file
with open(self.app_path + "/index.html", 'r') as fd:
self.write(fd.read())
class PublishHandler(BaseHandler):
@gen.coroutine
def post(self, **kwargs):
reply = {'success': True}
for info in self.request.files['selfie']:
_, content_type = info['filename'], info['content_type']
body = info['body']
b64_image = body.split(b',')[1]
image = base64.decodestring(b64_image)
with open('/tmp/selfie.jpeg', 'wb') as fd:
fd.write(image)
self.socialite.post_image(image)
self.write(reply)
def run():
"""Run the Tornado web application."""
# command line arguments; can also be written in a configuration file,
# specified with the --config argument.
define("port", default=9000, help="listen on the given port", type=int)
define("address", default='', help="bind the server at the given address", type=str)
define("default-message", help="Default message", type=str)
define("default-image-description", help="Default image description", type=str)
define("mastodon-token", help="Mastodon token", type=str)
define("mastodon-api-url", help="Mastodon API URL", type=str)
define("store-dir", help="store images in this directory", type=str)
define("ssl_cert", default=os.path.join(os.path.dirname(__file__), 'ssl', 'sb-cert.pem'),
help="specify the SSL certificate to use for secure connections")
define("ssl_key", default=os.path.join(os.path.dirname(__file__), 'ssl', 'sb-cert.key'),
help="specify the SSL private key to use for secure connections")
define("debug", default=False, help="run in debug mode")
define("config", help="read configuration file",
callback=lambda path: tornado.options.parse_config_file(path, final=False))
tornado.options.parse_command_line()
logger = logging.getLogger()
logger.setLevel(logging.INFO)
if options.debug:
logger.setLevel(logging.DEBUG)
ssl_options = {}
if os.path.isfile(options.ssl_key) and os.path.isfile(options.ssl_cert):
ssl_options = dict(certfile=options.ssl_cert, keyfile=options.ssl_key)
socialite = Socialite(options)
init_params = dict(global_options=options, socialite=socialite)
_publish_path = r"/publish/?"
application = tornado.web.Application([
(_publish_path, PublishHandler, init_params),
(r'/v%s%s' % (API_VERSION, _publish_path), PublishHandler, init_params),
(r"/(?:index.html)?", RootHandler, init_params),
(r'/?(.*)', tornado.web.StaticFileHandler, {"path": "static"})
],
static_path=os.path.join(os.path.dirname(__file__), "static"),
debug=options.debug)
http_server = tornado.httpserver.HTTPServer(application, ssl_options=ssl_options or None)
logger.info('Start serving on %s://%s:%d', 'https' if ssl_options else 'http',
options.address if options.address else '127.0.0.1',
options.port)
http_server.listen(options.port, options.address)
tornado.ioloop.IOLoop.instance().start()
if __name__ == '__main__':
try:
run()
except KeyboardInterrupt:
print('Server stopped')