29 |
--------------------------------------------------------------------------------
/app/routes/posts.rb:
--------------------------------------------------------------------------------
1 | # frozen_string_literal: true
2 |
3 | require_relative './base.rb'
4 | module File0
5 | module Routes
6 | class Posts < Base
7 | configure do
8 | set :views, 'app/views'
9 | set :root, File.expand_path('../..', __dir__)
10 | end
11 |
12 | post '/upload' do
13 | files = params['files']
14 |
15 | unless files
16 | status 400
17 | return render_generic(
18 | 'No files selected',
19 | 'Helps if you select a file, mate'
20 | )
21 | end
22 |
23 | @file_urls = []
24 | files.each do |file|
25 | @file_urls.push File0::File.create(
26 | file[:filename],
27 | file[:tempfile],
28 | file[:type],
29 | cookies[:key],
30 | params['gallery']
31 | )
32 | end
33 |
34 | @album_id = File0::Album.create(@file_urls) if files.size > 1
35 |
36 | # Redirect to uploaded file if we get a url, else die?
37 | if @file_urls.empty?
38 | status 500
39 | return render_generic('Oops!', 'Something went wrong')
40 | end
41 | @host_string = if (request.port == 80) || (request.port == 443)
42 | request.host
43 | else
44 | request.host_with_port
45 | end
46 |
47 | @host_string = if request.referer == '' && request.secure?
48 | 'https://' + @host_string
49 | elsif request.referrer =~ /^https.*/
50 | 'https://' + @host_string
51 | else
52 | 'http://' + @host_string
53 | end
54 |
55 | @pagetype = :uploaded
56 | return erb :base
57 | end
58 | end
59 | end
60 | end
61 |
--------------------------------------------------------------------------------
/app/routes/gets.rb:
--------------------------------------------------------------------------------
1 | # frozen_string_literal: true
2 |
3 | require_relative './base.rb'
4 | require 'pry'
5 | module File0
6 | module Routes
7 | class Gets < Base
8 | configure do
9 | set :views, 'app/views'
10 | set :root, File.expand_path('../..', __dir__)
11 | end
12 |
13 | get '/' do
14 | @pagetype = :form
15 | erb :base
16 | end
17 |
18 | get '/gallery' do
19 | @pagetype = :viewall
20 | erb :base
21 | end
22 |
23 | get '/me' do
24 | @pagetype = :viewmine
25 | erb :base
26 | end
27 |
28 | # File endpoints
29 | get %r(\/([\w]{12}(?:|[\.[\w]+]+))$), mustermann_opts: {
30 | check_anchors: false
31 | } do
32 | path = params['captures'].first
33 | file = File0::File.get(path)
34 | unless file
35 | status 404
36 | @lifetime = File0::Config.lifetime # Gross...
37 | @pagetype = :fourohfour
38 | return erb :base
39 | end
40 | content_type file['filetype']
41 | return Base64.decode64(file['data'])
42 | end
43 |
44 | post %r(\/([\w]{12}(?:|[\.[\w]+]+))/delete$), mustermann_opts: {
45 | check_anchors: false
46 | } do
47 | path = params['captures'].first
48 | res = File0::File.delete(path, cookies[:key])
49 | if res
50 | @pagetype = :deleted
51 | else
52 | status 403
53 | @pagetype = :forbidden
54 | end
55 | return erb :base
56 | end
57 |
58 | # Album endpoints
59 | get %r(\/album\/([\w]{12})$), mustermann_opts: {
60 | check_anchors: false
61 | } do
62 | path = params['captures'].first
63 | @album = File0::Album.get(path)
64 | unless @album
65 | status 404
66 | @lifetime = File0::Config.lifetime # Gross...
67 | @pagetype = :fourohfour
68 | return erb :base
69 | end
70 | @pagetype = :viewalbum
71 | erb :base
72 | end
73 | end
74 | end
75 | end
76 |
--------------------------------------------------------------------------------
/app.rb:
--------------------------------------------------------------------------------
1 | # frozen_string_literal: true
2 |
3 | # File0 - A temporary image hosting app written in Ruby
4 | # Copyright (C) 2017-2020 Martin Pugh
5 | #
6 | # This program is free software: you can redistribute it and/or modify
7 | # it under the terms of the GNU Affero General Public License as published by
8 | # the Free Software Foundation, either version 3 of the License, or
9 | # (at your option) any later version.
10 | #
11 | # This program is distributed in the hope that it will be useful,
12 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
13 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 | # GNU Affero General Public License for more details.
15 | #
16 | # You should have received a copy of the GNU Affero General Public License
17 | # along with this program. If not, see .
18 | require 'rubygems'
19 | require 'bundler'
20 | require 'securerandom'
21 | require 'base64'
22 | require 'json'
23 | require 'pry'
24 | require 'mini_magick'
25 | require 'filesize'
26 | require 'sinatra/cookies'
27 |
28 | Bundler.require
29 |
30 | Dir['./app/*.rb'].sort.each { |f| require f }
31 | Dir['./app/routes/*.rb'].sort.each { |f| require f }
32 | Dir['./app/models/*.rb'].sort.each { |f| require f }
33 |
34 | module File0
35 | # Main app class
36 | class App < Sinatra::Base
37 | helpers Sinatra::Cookies
38 | set :views, ::File.dirname(__FILE__) + '/app/views'
39 | set :public_folder, ::File.dirname(__FILE__) + '/app/public'
40 |
41 | redis_host = ENV['FILE0_REDIS_URL'] || 'localhost'
42 | redis = Redis.new(host: redis_host)
43 | # Probably not the best thing to use 2 connections just for namespacing...
44 | set :file_redis, Redis::Namespace.new(:file, redis: redis)
45 | set :album_redis, Redis::Namespace.new(:album, redis: redis)
46 | attr_accessor :file_redis
47 | attr_accessor :album_redis
48 |
49 | not_found do
50 | status 404
51 | @lifetime = Config.lifetime
52 | @pagetype = :fourohfour
53 | return erb :base
54 | end
55 |
56 | configure do
57 | use Routes::Gets
58 | use Routes::Posts
59 | end
60 | end
61 | end
62 |
--------------------------------------------------------------------------------
/public/safari-pinned-tab.svg:
--------------------------------------------------------------------------------
1 |
2 |
4 |
36 |
--------------------------------------------------------------------------------
/app/views/base.erb:
--------------------------------------------------------------------------------
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 | File0 - Temporary in-memory file storage
17 |
18 |
19 |
20 |
21 |
22 |
23 |
24 |
25 |
26 |
27 |
48 |
49 |
50 |
51 | <%= erb @pagetype%>
52 |
53 |
54 |
55 |
56 |
--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
1 | 
2 |
3 | File0
4 | =====
5 |
6 | [](https://travis-ci.org/s3krit/file0)
7 |
8 | File0 is a temporary file storage application, written in Sinatra for Ruby. It
9 | stores files in Redis and sets a finite `EXPIRY` on them (default is 12 hours).
10 | Depending on your configuration of Redis, this means it's possible for files to
11 | have never touched the disk of the device.
12 |
13 | Development
14 | -----------
15 |
16 | Clone this repository and run `bundle exec` in the directory (assuming
17 | you have [Bundler](http://bundler.io/) installed).
18 |
19 | Install redis-server and make sure it's running.
20 |
21 | ```
22 | # For debian/ubuntu
23 | sudo apt-get install redis-server
24 |
25 | # For Arch
26 | pacman -Sy redis
27 | sudo systemctl start redis-server
28 |
29 | # For OS X
30 | brew install redis
31 |
32 | # For everything else
33 | I don't know, please read your docs
34 | ```
35 |
36 | In order to start the server, run the command `rackup`. This will start a
37 | server on (by default) localhost:9292.
38 |
39 | Deployment
40 | ----------
41 |
42 | Haha, it's all manual! I've included a unicorn.rb file if you want to run it
43 | that way. By default, it'll run it in a file socket that you can then point a
44 | real webserver (like NGINX) at.
45 |
46 | You've got a couple of options. Included is a basic unicorn.rb example
47 | configuration file if you want to do things that way. Requires configuring your
48 | webserver to point at the file socket, and everything should work.
49 |
50 | However, because it's $CURRENT_YEAR, it also supports being deployed with
51 | docker-compose. To run file0 with docker-compose, simply run the following
52 | commands:
53 |
54 | ```
55 | docker-compose build
56 | docker-compose up
57 | ```
58 |
59 | This will start the service in rackup on forwarded port 9292. To allow external
60 | access, you will need to configure your webserver to proxy traffic to there.
61 |
62 | Notes
63 | -----
64 |
65 | `TempFile` objects in Ruby get written to `/tmp`. In order to guarantee that
66 | these files don't hit the disk, you'll need to make sure it's a proper `tmpfs`
67 | (and probably disable swapping) or have it mounted as a RAM disk. As for Docker,
68 | `docker-compose.yml` will make sure `/tmp` is a proper `tmpfs`. If you invoke
69 | Docker on your own without `docker-compose`, you will have to add `--tmpfs /tmp`
70 | to your Docker run command.
71 |
--------------------------------------------------------------------------------
/tests/file0_test.rb:
--------------------------------------------------------------------------------
1 | # frozen_string_literal: true
2 |
3 | ENV['RACK_ENV'] = 'test'
4 |
5 | require_relative '../app.rb'
6 | require 'test/unit'
7 | require 'rack/test'
8 | require 'redis'
9 | require 'base64'
10 |
11 | class File0Test < Test::Unit::TestCase
12 | include Rack::Test::Methods
13 | redis_host = ENV['REDIS_PORT_6379_TCP_ADDR'] || 'localhost'
14 | redis = Redis.new(host: redis_host)
15 | $file_redis = Redis::Namespace.new(:file, redis: redis)
16 | $album_redis = Redis::Namespace.new(:album, redis: redis)
17 |
18 | def app
19 | File0::App.new
20 | end
21 |
22 | # Page loading
23 |
24 | def test_it_loads_main_page
25 | get '/'
26 | assert last_response.ok?
27 | assert last_response.body.include?('File0')
28 | end
29 |
30 | def test_it_throws_a_404
31 | get '/thispageshouldneverexist'
32 | assert_equal 404, last_response.status
33 | end
34 |
35 | def test_it_throws_404s_on_missing_files
36 | get '/aaaaaaaaaaaa.jpg'
37 | assert_equal 404, last_response.status
38 | end
39 |
40 | def test_it_receives_uploaded_files
41 | file_count = File0::File.all.size
42 | post('/upload', "files[]" => Rack::Test::UploadedFile.new('tests/testfile.txt'))
43 | assert last_response.body.include? 'Take your file'
44 | assert_equal File0::File.all.size, file_count + 1
45 | end
46 |
47 | def test_it_receives_multiple_uploaded_files
48 | file_count = File0::File.all.size
49 | f = Rack::Test::UploadedFile.new('tests/testfile.txt')
50 | post('/upload', {files: [f,f]})
51 | assert last_response.body.include? 'Take your files'
52 | assert_equal File0::File.all.size, file_count + 2
53 | end
54 |
55 | def test_it_retrieves_valid_files
56 | filename = 'bbbbbbbbbbbb.jpg'
57 | payload = {
58 | filetype: 'text/plain',
59 | data: Base64.encode64("Hello, world!\n").strip
60 | }
61 | $file_redis.set(filename, payload.to_json)
62 | get '/bbbbbbbbbbbb.jpg'
63 | assert last_response.body.include? 'Hello, world'
64 | end
65 |
66 | def test_it_throws_404s_of_expired_files
67 | filename = 'bbbbbbbbbbbb.jpg'
68 | assert $file_redis.get(filename)
69 | $file_redis.expire(filename, 1)
70 | sleep 2
71 | get '/bbbbbbbbbbbb.jpg'
72 | assert_equal 404, last_response.status
73 | end
74 |
75 | def test_it_loads_the_gallery_page_correctly
76 | get '/gallery'
77 | assert last_response.ok?
78 | assert last_response.body.include?('Filename')
79 | end
80 |
81 | def test_gallery_page_lists_approved_files_correctly
82 | filename = 'bbbbbbbbbbbb.jpg'
83 | payload = {
84 | filetype: 'text/plain',
85 | data: Base64.encode64("Hello, world!\n").strip,
86 | gallery: 'on'
87 | }
88 | $file_redis.set(filename, payload.to_json)
89 | get '/gallery'
90 | assert last_response.body.include?('bbbbbbbbbbbb.jpg')
91 | end
92 |
93 | def test_gallery_page_doesnt_list_unapproved_files
94 | filename = 'abcdefgh.jpg'
95 | payload = {
96 | filetype: 'text/plain',
97 | data: Base64.encode64("Hello, world!\n").strip,
98 | gallery: nil
99 | }
100 | $file_redis.set(filename, payload.to_json)
101 | get '/gallery'
102 | assert !last_response.body.include?('abcdefgh.jpg')
103 | end
104 |
105 | def test_it_throws_error_on_uploading_no_file
106 | post '/upload'
107 | assert_equal 400, last_response.status
108 | end
109 | end
110 |
--------------------------------------------------------------------------------
/app/models/file.rb:
--------------------------------------------------------------------------------
1 | # frozen_string_literal: true
2 |
3 | require 'pry'
4 | module File0
5 | class File
6 | def self.get(path)
7 | redis = File0::App.file_redis
8 | file = redis.get(path)
9 | return nil unless file
10 |
11 | JSON.parse(file)
12 | end
13 |
14 | def self.delete(path, key = nil)
15 | redis = File0::App.file_redis
16 | file = redis.get(path)
17 | return nil unless file
18 |
19 | parsed = JSON.parse(file)
20 | return nil unless parsed['key'] && (key == parsed['key'])
21 |
22 | redis.del(path)
23 | true
24 | end
25 |
26 | def self.ttl(path)
27 | redis = File0::App.file_redis
28 | redis.ttl(path)
29 | end
30 |
31 | def self.all
32 | redis = File0::App.file_redis
33 | file_list = redis.keys
34 | files = []
35 | file_list.each do |filename|
36 | file = File0::File.get(filename)
37 | file['filename'] = filename
38 | files.push(file)
39 | end
40 | files
41 | end
42 |
43 | def self.size(path)
44 | file = get(path)
45 | data = Base64.decode64(file['data'])
46 | data.size
47 | end
48 |
49 | def self.create(orig_filename, file, filetype, key = nil, gallery = nil)
50 | redis = File0::App.file_redis
51 |
52 | # Early returns for bad shit
53 | return nil if file.size > File0::Config.max_filesize
54 | # Identify filetype
55 | return nil unless valid_file?(file, filetype)
56 |
57 | image_data = file.read
58 | if image?(filetype)
59 | thumbnail_data = create_thumbnail(image_data)
60 | image_data = rotate(image_data)
61 | image_data = strip(image_data)
62 | end
63 | # Store in redis as json {'type':'file/whatever', 'data':'base64'}
64 | basename = SecureRandom.hex(6)
65 | # Special case for .tar.gz
66 | filename = if ::File.basename(orig_filename) =~ /.*tar\.gz$/
67 | basename + '.tar.gz'
68 | else
69 | basename + ::File.extname(file.path)
70 | end
71 | payload = {
72 | filetype: filetype,
73 | data: Base64.encode64(image_data).delete("\n"),
74 | key: key,
75 | thumbnail: thumbnail_data || nil,
76 | gallery: gallery
77 | }
78 | redis.set(filename, payload.to_json)
79 | redis.expire(filename, File0::Config.lifetime)
80 | filename
81 | end
82 |
83 | def self.create_thumbnail(image_data, dimensions = '200x200')
84 | image = MiniMagick::Image.read(image_data)
85 | image.resize(dimensions)
86 | image_data = rotate(image.to_blob)
87 | Base64.encode64(image_data).delete("\n")
88 | end
89 |
90 | def self.rotate(image_data)
91 | image = MiniMagick::Image.read(image_data)
92 | image.auto_orient.to_blob
93 | end
94 |
95 | def self.strip(image_data)
96 | image = MiniMagick::Image.read(image_data)
97 | image.strip
98 | image.to_blob
99 | end
100 |
101 | def self.valid_file?(file, filetype)
102 | bad_extensions = []
103 | bad_mimes = []
104 | extension = ::File.extname(file.path).downcase
105 |
106 | return false if bad_extensions.include?(extension)
107 |
108 | return false if bad_mimes.include?(filetype)
109 |
110 | true
111 | end
112 |
113 | def self.image?(filetype)
114 | whitelist = %w[image/jpeg image/png image/gif]
115 | whitelist.include?(filetype)
116 | end
117 |
118 | def self.audio?(filetype)
119 | whitelist = %w[audio/mpeg3 audio/mpeg audio/ogg video/ogg]
120 | whitelist.include?(filetype)
121 | end
122 | end
123 | end
124 |
--------------------------------------------------------------------------------
/public/css/font-awesome.min.css:
--------------------------------------------------------------------------------
1 | /*!
2 | * Font Awesome 4.7.0 by @davegandy - http://fontawesome.io - @fontawesome
3 | * License - http://fontawesome.io/license (Font: SIL OFL 1.1, CSS: MIT License)
4 | */@font-face{font-family:'FontAwesome';src:url('../fonts/fontawesome-webfont.eot?v=4.7.0');src:url('../fonts/fontawesome-webfont.eot?#iefix&v=4.7.0') format('embedded-opentype'),url('../fonts/fontawesome-webfont.woff2?v=4.7.0') format('woff2'),url('../fonts/fontawesome-webfont.woff?v=4.7.0') format('woff'),url('../fonts/fontawesome-webfont.ttf?v=4.7.0') format('truetype'),url('../fonts/fontawesome-webfont.svg?v=4.7.0#fontawesomeregular') format('svg');font-weight:normal;font-style:normal}.fa{display:inline-block;font:normal normal normal 14px/1 FontAwesome;font-size:inherit;text-rendering:auto;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.fa-lg{font-size:1.33333333em;line-height:.75em;vertical-align:-15%}.fa-2x{font-size:2em}.fa-3x{font-size:3em}.fa-4x{font-size:4em}.fa-5x{font-size:5em}.fa-fw{width:1.28571429em;text-align:center}.fa-ul{padding-left:0;margin-left:2.14285714em;list-style-type:none}.fa-ul>li{position:relative}.fa-li{position:absolute;left:-2.14285714em;width:2.14285714em;top:.14285714em;text-align:center}.fa-li.fa-lg{left:-1.85714286em}.fa-border{padding:.2em .25em .15em;border:solid .08em #eee;border-radius:.1em}.fa-pull-left{float:left}.fa-pull-right{float:right}.fa.fa-pull-left{margin-right:.3em}.fa.fa-pull-right{margin-left:.3em}.pull-right{float:right}.pull-left{float:left}.fa.pull-left{margin-right:.3em}.fa.pull-right{margin-left:.3em}.fa-spin{-webkit-animation:fa-spin 2s infinite linear;animation:fa-spin 2s infinite linear}.fa-pulse{-webkit-animation:fa-spin 1s infinite steps(8);animation:fa-spin 1s infinite steps(8)}@-webkit-keyframes fa-spin{0%{-webkit-transform:rotate(0deg);transform:rotate(0deg)}100%{-webkit-transform:rotate(359deg);transform:rotate(359deg)}}@keyframes fa-spin{0%{-webkit-transform:rotate(0deg);transform:rotate(0deg)}100%{-webkit-transform:rotate(359deg);transform:rotate(359deg)}}.fa-rotate-90{-ms-filter:"progid:DXImageTransform.Microsoft.BasicImage(rotation=1)";-webkit-transform:rotate(90deg);-ms-transform:rotate(90deg);transform:rotate(90deg)}.fa-rotate-180{-ms-filter:"progid:DXImageTransform.Microsoft.BasicImage(rotation=2)";-webkit-transform:rotate(180deg);-ms-transform:rotate(180deg);transform:rotate(180deg)}.fa-rotate-270{-ms-filter:"progid:DXImageTransform.Microsoft.BasicImage(rotation=3)";-webkit-transform:rotate(270deg);-ms-transform:rotate(270deg);transform:rotate(270deg)}.fa-flip-horizontal{-ms-filter:"progid:DXImageTransform.Microsoft.BasicImage(rotation=0, mirror=1)";-webkit-transform:scale(-1, 1);-ms-transform:scale(-1, 1);transform:scale(-1, 1)}.fa-flip-vertical{-ms-filter:"progid:DXImageTransform.Microsoft.BasicImage(rotation=2, mirror=1)";-webkit-transform:scale(1, -1);-ms-transform:scale(1, -1);transform:scale(1, -1)}:root .fa-rotate-90,:root .fa-rotate-180,:root .fa-rotate-270,:root .fa-flip-horizontal,:root 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219 | Appropriate Legal Notices; however, if the Program has interactive
220 | interfaces that do not display Appropriate Legal Notices, your
221 | work need not make them do so.
222 |
223 | A compilation of a covered work with other separate and independent
224 | works, which are not by their nature extensions of the covered work,
225 | and which are not combined with it such as to form a larger program,
226 | in or on a volume of a storage or distribution medium, is called an
227 | "aggregate" if the compilation and its resulting copyright are not
228 | used to limit the access or legal rights of the compilation's users
229 | beyond what the individual works permit. Inclusion of a covered work
230 | in an aggregate does not cause this License to apply to the other
231 | parts of the aggregate.
232 |
233 | 6. Conveying Non-Source Forms.
234 |
235 | You may convey a covered work in object code form under the terms
236 | of sections 4 and 5, provided that you also convey the
237 | machine-readable Corresponding Source under the terms of this License,
238 | in one of these ways:
239 |
240 | a) Convey the object code in, or embodied in, a physical product
241 | (including a physical distribution medium), accompanied by the
242 | Corresponding Source fixed on a durable physical medium
243 | customarily used for software interchange.
244 |
245 | b) Convey the object code in, or embodied in, a physical product
246 | (including a physical distribution medium), accompanied by a
247 | written offer, valid for at least three years and valid for as
248 | long as you offer spare parts or customer support for that product
249 | model, to give anyone who possesses the object code either (1) a
250 | copy of the Corresponding Source for all the software in the
251 | product that is covered by this License, on a durable physical
252 | medium customarily used for software interchange, for a price no
253 | more than your reasonable cost of physically performing this
254 | conveying of source, or (2) access to copy the
255 | Corresponding Source from a network server at no charge.
256 |
257 | c) Convey individual copies of the object code with a copy of the
258 | written offer to provide the Corresponding Source. This
259 | alternative is allowed only occasionally and noncommercially, and
260 | only if you received the object code with such an offer, in accord
261 | with subsection 6b.
262 |
263 | d) Convey the object code by offering access from a designated
264 | place (gratis or for a charge), and offer equivalent access to the
265 | Corresponding Source in the same way through the same place at no
266 | further charge. You need not require recipients to copy the
267 | Corresponding Source along with the object code. If the place to
268 | copy the object code is a network server, the Corresponding Source
269 | may be on a different server (operated by you or a third party)
270 | that supports equivalent copying facilities, provided you maintain
271 | clear directions next to the object code saying where to find the
272 | Corresponding Source. Regardless of what server hosts the
273 | Corresponding Source, you remain obligated to ensure that it is
274 | available for as long as needed to satisfy these requirements.
275 |
276 | e) Convey the object code using peer-to-peer transmission, provided
277 | you inform other peers where the object code and Corresponding
278 | Source of the work are being offered to the general public at no
279 | charge under subsection 6d.
280 |
281 | A separable portion of the object code, whose source code is excluded
282 | from the Corresponding Source as a System Library, need not be
283 | included in conveying the object code work.
284 |
285 | A "User Product" is either (1) a "consumer product", which means any
286 | tangible personal property which is normally used for personal, family,
287 | or household purposes, or (2) anything designed or sold for incorporation
288 | into a dwelling. In determining whether a product is a consumer product,
289 | doubtful cases shall be resolved in favor of coverage. For a particular
290 | product received by a particular user, "normally used" refers to a
291 | typical or common use of that class of product, regardless of the status
292 | of the particular user or of the way in which the particular user
293 | actually uses, or expects or is expected to use, the product. A product
294 | is a consumer product regardless of whether the product has substantial
295 | commercial, industrial or non-consumer uses, unless such uses represent
296 | the only significant mode of use of the product.
297 |
298 | "Installation Information" for a User Product means any methods,
299 | procedures, authorization keys, or other information required to install
300 | and execute modified versions of a covered work in that User Product from
301 | a modified version of its Corresponding Source. The information must
302 | suffice to ensure that the continued functioning of the modified object
303 | code is in no case prevented or interfered with solely because
304 | modification has been made.
305 |
306 | If you convey an object code work under this section in, or with, or
307 | specifically for use in, a User Product, and the conveying occurs as
308 | part of a transaction in which the right of possession and use of the
309 | User Product is transferred to the recipient in perpetuity or for a
310 | fixed term (regardless of how the transaction is characterized), the
311 | Corresponding Source conveyed under this section must be accompanied
312 | by the Installation Information. But this requirement does not apply
313 | if neither you nor any third party retains the ability to install
314 | modified object code on the User Product (for example, the work has
315 | been installed in ROM).
316 |
317 | The requirement to provide Installation Information does not include a
318 | requirement to continue to provide support service, warranty, or updates
319 | for a work that has been modified or installed by the recipient, or for
320 | the User Product in which it has been modified or installed. Access to a
321 | network may be denied when the modification itself materially and
322 | adversely affects the operation of the network or violates the rules and
323 | protocols for communication across the network.
324 |
325 | Corresponding Source conveyed, and Installation Information provided,
326 | in accord with this section must be in a format that is publicly
327 | documented (and with an implementation available to the public in
328 | source code form), and must require no special password or key for
329 | unpacking, reading or copying.
330 |
331 | 7. Additional Terms.
332 |
333 | "Additional permissions" are terms that supplement the terms of this
334 | License by making exceptions from one or more of its conditions.
335 | Additional permissions that are applicable to the entire Program shall
336 | be treated as though they were included in this License, to the extent
337 | that they are valid under applicable law. If additional permissions
338 | apply only to part of the Program, that part may be used separately
339 | under those permissions, but the entire Program remains governed by
340 | this License without regard to the additional permissions.
341 |
342 | When you convey a copy of a covered work, you may at your option
343 | remove any additional permissions from that copy, or from any part of
344 | it. (Additional permissions may be written to require their own
345 | removal in certain cases when you modify the work.) You may place
346 | additional permissions on material, added by you to a covered work,
347 | for which you have or can give appropriate copyright permission.
348 |
349 | Notwithstanding any other provision of this License, for material you
350 | add to a covered work, you may (if authorized by the copyright holders of
351 | that material) supplement the terms of this License with terms:
352 |
353 | a) Disclaiming warranty or limiting liability differently from the
354 | terms of sections 15 and 16 of this License; or
355 |
356 | b) Requiring preservation of specified reasonable legal notices or
357 | author attributions in that material or in the Appropriate Legal
358 | Notices displayed by works containing it; or
359 |
360 | c) Prohibiting misrepresentation of the origin of that material, or
361 | requiring that modified versions of such material be marked in
362 | reasonable ways as different from the original version; or
363 |
364 | d) Limiting the use for publicity purposes of names of licensors or
365 | authors of the material; or
366 |
367 | e) Declining to grant rights under trademark law for use of some
368 | trade names, trademarks, or service marks; or
369 |
370 | f) Requiring indemnification of licensors and authors of that
371 | material by anyone who conveys the material (or modified versions of
372 | it) with contractual assumptions of liability to the recipient, for
373 | any liability that these contractual assumptions directly impose on
374 | those licensors and authors.
375 |
376 | All other non-permissive additional terms are considered "further
377 | restrictions" within the meaning of section 10. If the Program as you
378 | received it, or any part of it, contains a notice stating that it is
379 | governed by this License along with a term that is a further
380 | restriction, you may remove that term. If a license document contains
381 | a further restriction but permits relicensing or conveying under this
382 | License, you may add to a covered work material governed by the terms
383 | of that license document, provided that the further restriction does
384 | not survive such relicensing or conveying.
385 |
386 | If you add terms to a covered work in accord with this section, you
387 | must place, in the relevant source files, a statement of the
388 | additional terms that apply to those files, or a notice indicating
389 | where to find the applicable terms.
390 |
391 | Additional terms, permissive or non-permissive, may be stated in the
392 | form of a separately written license, or stated as exceptions;
393 | the above requirements apply either way.
394 |
395 | 8. Termination.
396 |
397 | You may not propagate or modify a covered work except as expressly
398 | provided under this License. Any attempt otherwise to propagate or
399 | modify it is void, and will automatically terminate your rights under
400 | this License (including any patent licenses granted under the third
401 | paragraph of section 11).
402 |
403 | However, if you cease all violation of this License, then your
404 | license from a particular copyright holder is reinstated (a)
405 | provisionally, unless and until the copyright holder explicitly and
406 | finally terminates your license, and (b) permanently, if the copyright
407 | holder fails to notify you of the violation by some reasonable means
408 | prior to 60 days after the cessation.
409 |
410 | Moreover, your license from a particular copyright holder is
411 | reinstated permanently if the copyright holder notifies you of the
412 | violation by some reasonable means, this is the first time you have
413 | received notice of violation of this License (for any work) from that
414 | copyright holder, and you cure the violation prior to 30 days after
415 | your receipt of the notice.
416 |
417 | Termination of your rights under this section does not terminate the
418 | licenses of parties who have received copies or rights from you under
419 | this License. If your rights have been terminated and not permanently
420 | reinstated, you do not qualify to receive new licenses for the same
421 | material under section 10.
422 |
423 | 9. Acceptance Not Required for Having Copies.
424 |
425 | You are not required to accept this License in order to receive or
426 | run a copy of the Program. Ancillary propagation of a covered work
427 | occurring solely as a consequence of using peer-to-peer transmission
428 | to receive a copy likewise does not require acceptance. However,
429 | nothing other than this License grants you permission to propagate or
430 | modify any covered work. These actions infringe copyright if you do
431 | not accept this License. Therefore, by modifying or propagating a
432 | covered work, you indicate your acceptance of this License to do so.
433 |
434 | 10. Automatic Licensing of Downstream Recipients.
435 |
436 | Each time you convey a covered work, the recipient automatically
437 | receives a license from the original licensors, to run, modify and
438 | propagate that work, subject to this License. You are not responsible
439 | for enforcing compliance by third parties with this License.
440 |
441 | An "entity transaction" is a transaction transferring control of an
442 | organization, or substantially all assets of one, or subdividing an
443 | organization, or merging organizations. If propagation of a covered
444 | work results from an entity transaction, each party to that
445 | transaction who receives a copy of the work also receives whatever
446 | licenses to the work the party's predecessor in interest had or could
447 | give under the previous paragraph, plus a right to possession of the
448 | Corresponding Source of the work from the predecessor in interest, if
449 | the predecessor has it or can get it with reasonable efforts.
450 |
451 | You may not impose any further restrictions on the exercise of the
452 | rights granted or affirmed under this License. For example, you may
453 | not impose a license fee, royalty, or other charge for exercise of
454 | rights granted under this License, and you may not initiate litigation
455 | (including a cross-claim or counterclaim in a lawsuit) alleging that
456 | any patent claim is infringed by making, using, selling, offering for
457 | sale, or importing the Program or any portion of it.
458 |
459 | 11. Patents.
460 |
461 | A "contributor" is a copyright holder who authorizes use under this
462 | License of the Program or a work on which the Program is based. The
463 | work thus licensed is called the contributor's "contributor version".
464 |
465 | A contributor's "essential patent claims" are all patent claims
466 | owned or controlled by the contributor, whether already acquired or
467 | hereafter acquired, that would be infringed by some manner, permitted
468 | by this License, of making, using, or selling its contributor version,
469 | but do not include claims that would be infringed only as a
470 | consequence of further modification of the contributor version. For
471 | purposes of this definition, "control" includes the right to grant
472 | patent sublicenses in a manner consistent with the requirements of
473 | this License.
474 |
475 | Each contributor grants you a non-exclusive, worldwide, royalty-free
476 | patent license under the contributor's essential patent claims, to
477 | make, use, sell, offer for sale, import and otherwise run, modify and
478 | propagate the contents of its contributor version.
479 |
480 | In the following three paragraphs, a "patent license" is any express
481 | agreement or commitment, however denominated, not to enforce a patent
482 | (such as an express permission to practice a patent or covenant not to
483 | sue for patent infringement). To "grant" such a patent license to a
484 | party means to make such an agreement or commitment not to enforce a
485 | patent against the party.
486 |
487 | If you convey a covered work, knowingly relying on a patent license,
488 | and the Corresponding Source of the work is not available for anyone
489 | to copy, free of charge and under the terms of this License, through a
490 | publicly available network server or other readily accessible means,
491 | then you must either (1) cause the Corresponding Source to be so
492 | available, or (2) arrange to deprive yourself of the benefit of the
493 | patent license for this particular work, or (3) arrange, in a manner
494 | consistent with the requirements of this License, to extend the patent
495 | license to downstream recipients. "Knowingly relying" means you have
496 | actual knowledge that, but for the patent license, your conveying the
497 | covered work in a country, or your recipient's use of the covered work
498 | in a country, would infringe one or more identifiable patents in that
499 | country that you have reason to believe are valid.
500 |
501 | If, pursuant to or in connection with a single transaction or
502 | arrangement, you convey, or propagate by procuring conveyance of, a
503 | covered work, and grant a patent license to some of the parties
504 | receiving the covered work authorizing them to use, propagate, modify
505 | or convey a specific copy of the covered work, then the patent license
506 | you grant is automatically extended to all recipients of the covered
507 | work and works based on it.
508 |
509 | A patent license is "discriminatory" if it does not include within
510 | the scope of its coverage, prohibits the exercise of, or is
511 | conditioned on the non-exercise of one or more of the rights that are
512 | specifically granted under this License. You may not convey a covered
513 | work if you are a party to an arrangement with a third party that is
514 | in the business of distributing software, under which you make payment
515 | to the third party based on the extent of your activity of conveying
516 | the work, and under which the third party grants, to any of the
517 | parties who would receive the covered work from you, a discriminatory
518 | patent license (a) in connection with copies of the covered work
519 | conveyed by you (or copies made from those copies), or (b) primarily
520 | for and in connection with specific products or compilations that
521 | contain the covered work, unless you entered into that arrangement,
522 | or that patent license was granted, prior to 28 March 2007.
523 |
524 | Nothing in this License shall be construed as excluding or limiting
525 | any implied license or other defenses to infringement that may
526 | otherwise be available to you under applicable patent law.
527 |
528 | 12. No Surrender of Others' Freedom.
529 |
530 | If conditions are imposed on you (whether by court order, agreement or
531 | otherwise) that contradict the conditions of this License, they do not
532 | excuse you from the conditions of this License. If you cannot convey a
533 | covered work so as to satisfy simultaneously your obligations under this
534 | License and any other pertinent obligations, then as a consequence you may
535 | not convey it at all. For example, if you agree to terms that obligate you
536 | to collect a royalty for further conveying from those to whom you convey
537 | the Program, the only way you could satisfy both those terms and this
538 | License would be to refrain entirely from conveying the Program.
539 |
540 | 13. Remote Network Interaction; Use with the GNU General Public License.
541 |
542 | Notwithstanding any other provision of this License, if you modify the
543 | Program, your modified version must prominently offer all users
544 | interacting with it remotely through a computer network (if your version
545 | supports such interaction) an opportunity to receive the Corresponding
546 | Source of your version by providing access to the Corresponding Source
547 | from a network server at no charge, through some standard or customary
548 | means of facilitating copying of software. This Corresponding Source
549 | shall include the Corresponding Source for any work covered by version 3
550 | of the GNU General Public License that is incorporated pursuant to the
551 | following paragraph.
552 |
553 | Notwithstanding any other provision of this License, you have
554 | permission to link or combine any covered work with a work licensed
555 | under version 3 of the GNU General Public License into a single
556 | combined work, and to convey the resulting work. The terms of this
557 | License will continue to apply to the part which is the covered work,
558 | but the work with which it is combined will remain governed by version
559 | 3 of the GNU General Public License.
560 |
561 | 14. Revised Versions of this License.
562 |
563 | The Free Software Foundation may publish revised and/or new versions of
564 | the GNU Affero General Public License from time to time. Such new versions
565 | will be similar in spirit to the present version, but may differ in detail to
566 | address new problems or concerns.
567 |
568 | Each version is given a distinguishing version number. If the
569 | Program specifies that a certain numbered version of the GNU Affero General
570 | Public License "or any later version" applies to it, you have the
571 | option of following the terms and conditions either of that numbered
572 | version or of any later version published by the Free Software
573 | Foundation. If the Program does not specify a version number of the
574 | GNU Affero General Public License, you may choose any version ever published
575 | by the Free Software Foundation.
576 |
577 | If the Program specifies that a proxy can decide which future
578 | versions of the GNU Affero General Public License can be used, that proxy's
579 | public statement of acceptance of a version permanently authorizes you
580 | to choose that version for the Program.
581 |
582 | Later license versions may give you additional or different
583 | permissions. However, no additional obligations are imposed on any
584 | author or copyright holder as a result of your choosing to follow a
585 | later version.
586 |
587 | 15. Disclaimer of Warranty.
588 |
589 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
590 | APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
591 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
592 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
593 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
594 | PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
595 | IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
596 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
597 |
598 | 16. Limitation of Liability.
599 |
600 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
601 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
602 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
603 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
604 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
605 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
606 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
607 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
608 | SUCH DAMAGES.
609 |
610 | 17. Interpretation of Sections 15 and 16.
611 |
612 | If the disclaimer of warranty and limitation of liability provided
613 | above cannot be given local legal effect according to their terms,
614 | reviewing courts shall apply local law that most closely approximates
615 | an absolute waiver of all civil liability in connection with the
616 | Program, unless a warranty or assumption of liability accompanies a
617 | copy of the Program in return for a fee.
618 |
619 | END OF TERMS AND CONDITIONS
620 |
621 | How to Apply These Terms to Your New Programs
622 |
623 | If you develop a new program, and you want it to be of the greatest
624 | possible use to the public, the best way to achieve this is to make it
625 | free software which everyone can redistribute and change under these terms.
626 |
627 | To do so, attach the following notices to the program. It is safest
628 | to attach them to the start of each source file to most effectively
629 | state the exclusion of warranty; and each file should have at least
630 | the "copyright" line and a pointer to where the full notice is found.
631 |
632 |
633 | Copyright (C)
634 |
635 | This program is free software: you can redistribute it and/or modify
636 | it under the terms of the GNU Affero General Public License as published
637 | by the Free Software Foundation, either version 3 of the License, or
638 | (at your option) any later version.
639 |
640 | This program is distributed in the hope that it will be useful,
641 | but WITHOUT ANY WARRANTY; without even the implied warranty of
642 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
643 | GNU Affero General Public License for more details.
644 |
645 | You should have received a copy of the GNU Affero General Public License
646 | along with this program. If not, see .
647 |
648 | Also add information on how to contact you by electronic and paper mail.
649 |
650 | If your software can interact with users remotely through a computer
651 | network, you should also make sure that it provides a way for users to
652 | get its source. For example, if your program is a web application, its
653 | interface could display a "Source" link that leads users to an archive
654 | of the code. There are many ways you could offer source, and different
655 | solutions will be better for different programs; see section 13 for the
656 | specific requirements.
657 |
658 | You should also get your employer (if you work as a programmer) or school,
659 | if any, to sign a "copyright disclaimer" for the program, if necessary.
660 | For more information on this, and how to apply and follow the GNU AGPL, see
661 | .
662 |
--------------------------------------------------------------------------------
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1 | /*!
2 | * Bootstrap v4.1.0 (https://getbootstrap.com/)
3 | * Copyright 2011-2018 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
4 | * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
5 | */
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