First commit

15 files changed, 950 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..4a35013
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,6 @@
+# cache
+__pycache__/
+
+# static files
+files/*
+!files/.place_holder
diff --git a/authors.txt b/authors.txt
new file mode 100644
index 0000000..50c4fb9
--- /dev/null
+++ b/authors.txt
@@ -0,0 +1 @@
+This project has been created by VG (vg@devys.org).
diff --git a/doc/crontab.conf.ex b/doc/crontab.conf.ex
new file mode 100644
index 0000000..efae64e
--- /dev/null
+++ b/doc/crontab.conf.ex
@@ -0,0 +1,2 @@
+# m h  dom mon dow   command
+  0 0  *   *   *     /shareit/purge.sh
diff --git a/doc/uwsgi.ini.ex b/doc/uwsgi.ini.ex
new file mode 100644
index 0000000..3665a2a
--- /dev/null
+++ b/doc/uwsgi.ini.ex
@@ -0,0 +1,17 @@
+[uwsgi]
+# strict = use strict options, any unknown option will cause uwsgi to not
+# start and thus helps me spot out typos
+strict = true
+uwsgi-socket = /sockets/uwsgi/socket
+chmod-socket = 660
+chown-socket = 33:1000
+# uwsgi-socket = 192.168.0.1:3031 # for tcp socket based instead of unix one
+chdir = /shareit/
+master = true
+plugins = python3
+file = shareit.py
+processes = 4
+threads = 2
+offload-threads = 2
+enable-threads = true
+pcre-jit = true
diff --git a/license.txt b/license.txt
new file mode 100644
index 0000000..94a9ed0
--- /dev/null
+++ b/license.txt
@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
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+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
diff --git a/readme.rst b/readme.rst
new file mode 100644
index 0000000..8044f57
--- /dev/null
+++ b/readme.rst
@@ -0,0 +1,40 @@
+Shareit
+#######
+
+Description
+===========
+
+When you want to share a file by e-mail or on a chat conversation, and the
+file is relatively big, the file might be refused or it might just be
+impractical.
+
+Shareit is a simple webpage allowing one to store a file for some time (10
+days by default) and create a url to share. Recipients just have to download
+the file from the created url.
+
+This service supports resume, useful for big files.
+
+Created urls have the following form:
+
+    http://shareit.exemple.com/download/90580754da3ed1b3e4be38c9b277bc9b
+
+No real security is implemented, it is a quick and dirty hack.
+
+Access restriction might be done on the server configuration side. For
+example, you might want to restrict people to send files to the server to
+prevent abuse of service, or preventing the share of illegal content, but
+allowing unauthentified download.
+
+The `doc` directory contains example of configuration you can use to deploy
+the service. The `scripts` directory contains example client scripts to ease
+the use of service and pass authentication with a netrc file.
+
+Installation
+============
+
+The shareit service might be run in development mode by simply calling it
+inside shareit directory:
+
+    cd sharit && ./shareit.py
+
+The service can be run as a python wsgi service. I tested it under uwsgi.
diff --git a/scripts/shareit b/scripts/shareit
new file mode 100755
index 0000000..0c30310
--- /dev/null
+++ b/scripts/shareit
@@ -0,0 +1,28 @@
+#!/bin/bash
+
+file="$1"
+tempfile=""
+
+rmtempfile_cb() { rm "$tempfile"; }
+
+if [ "$file" == "" ]; then
+    tempfile="$(mktemp)"
+    trap rmtempfile_cb EXIT
+    cat > $tempfile
+    file=$tempfile
+fi
+
+if [ ! -e ~/.certs/org.devys.shareit.crt ]; then
+    mkdir -p ~/.certs/
+    gnutls-cli -p 443 shareit.devys.org --print-cert </dev/null | \
+        sed -n '/-----BEGIN CERTIFICATE-----/,/-----END CERTIFICATE-----/p' > \
+        ~/.certs/org.devys.shareit.crt || exit 1
+fi
+
+file="${file/\\/\\\\}"
+file="${file/\"/\\\"}"
+
+curl --cacert ~/.certs/org.devys.shareit.crt \
+    --netrc --form upload=@"\"$file\"" \
+    https://shareit.devys.org/upload/ | \
+    sed -n 's/^.*<a href="\([^"]\+\)".*$/\1/p' | head -n 1
diff --git a/scripts/shareit-scrot b/scripts/shareit-scrot
new file mode 100755
index 0000000..9588de6
--- /dev/null
+++ b/scripts/shareit-scrot
@@ -0,0 +1,14 @@
+#!/bin/bash
+set -e
+
+file=
+
+cleanup_cb() { [ -n "$file" ] && rm $file; }
+
+trap cleanup_cb EXIT
+
+file=$(mktemp --suffix=.png)
+
+scrot -s $file
+
+shareit $file
diff --git a/shareit/purge.sh b/shareit/purge.sh
new file mode 100755
index 0000000..961cbb1
--- /dev/null
+++ b/shareit/purge.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+find /files/ -type f -mtime +10 ! -name '*.meta' \
+    -exec rm {} \; -exec rm {}.meta \;
diff --git a/shareit/shareit.py b/shareit/shareit.py
new file mode 100755
index 0000000..8f841d3
--- /dev/null
+++ b/shareit/shareit.py
@@ -0,0 +1,98 @@
+#!/usr/bin/python3
+
+import bottle
+import hashlib
+import json
+import io
+import os
+import jinja2
+import tempfile
+from pathlib import Path
+
+#from bottle import Jinja2Template as Template
+#from bottle import SimpleTemplate as Template
+
+DEV_FILES_DIR = '/tmp/files'
+PROD_FILES_DIR = '/files'
+FILES_DIR = PROD_FILES_DIR
+
+# load templates
+#templates = {}
+#for template in ['propose_upload', 'upload']:
+#    with open(Path('templates', template + '.html').as_posix(), 'r') as fi:
+#        templates[template] = Template(fi.read(), lookup='./templates/')
+templates = jinja2.Environment(
+        loader=jinja2.FileSystemLoader('templates'))
+
+#app = application = bottle.Bottle()
+# with line above, routing decorators then needs to be @app.route(...)
+# app is optional, but smaller. If you use default_app instead and call
+# bottle.route instead of application.route, app is not needed
+application = bottle.default_app() # defines application used for wsgi mode
+
+CHUNK_SIZE = 1024*1024
+
+valid_languages = ['en', 'fr']
+def get_language():
+    headlang = bottle.request.headers.get('accept-language', 'en')[:2].lower()
+    if headlang in valid_languages:
+        return headlang
+    return valid_languages[0]
+
+@bottle.route('/')
+@bottle.route('/propose_upload/')
+def propose_upload():
+    lang = get_language()
+    return templates.get_template('propose_upload.html').render(lang=lang)
+
+@bottle.route('/upload/', method='POST')
+def upload_route():
+    lang = get_language()
+    upload = bottle.request.files.get('upload')
+    fp = upload.file
+    md5 = hashlib.md5()
+    size = 0
+    while True:
+        data = fp.read(CHUNK_SIZE)
+        if not data:
+            break
+        size += len(data)
+        md5.update(data)
+    if not size:
+        bottle.abort(400, 'File should not be empty')
+    digest = md5.hexdigest()
+    link = 'http://shareit.devys.org/download/{digest}'.format(digest=digest)
+    fp.seek(0)
+    filename = Path(FILES_DIR, digest)
+    upload.save(filename.as_posix(), overwrite=True)
+    with open(filename.as_posix() + '.meta', 'w') as fo:
+        fo.write(json.dumps({'filename': upload.raw_filename}))
+    return templates.get_template('upload.html').render(
+            link=link, digest=digest, lang=lang)
+
+@bottle.route('/download/<filename:re:[a-f0-9]{32}>')
+def download(filename):
+    server_filename = Path(FILES_DIR, filename).as_posix()
+    meta_filename = server_filename + '.meta'
+    if os.path.exists(meta_filename):
+        with open(meta_filename, 'r') as fi:
+            raw_filename = json.loads(fi.read())['filename']
+        return bottle.static_file(filename, root=FILES_DIR,
+                download=raw_filename, mimetype='binary')
+    abort(404, 'Requested file might have expired')
+
+@bottle.route('/favicon.ico')
+def favicon():
+    return bottle.static_file('favicon.ico', root='./static/')
+
+@bottle.route('/robot.txt')
+def robot():
+    return bottle.static_file('robot.txt', root='./static/')
+
+if __name__ == '__main__':
+    print('I: Starting shareit application as development server')
+    FILES_DIR = DEV_FILES_DIR
+    #bottle.run(host='0.0.0.0', port=8080)
+    bottle.run(host='0.0.0.0', port=8080, debug=True)
+else:
+    print('I: Starting shareit application as module or wsgi application')
diff --git a/shareit/static/favicon.ico b/shareit/static/favicon.ico
new file mode 100644
index 0000000..93f8a23
--- /dev/null
+++ b/shareit/static/favicon.ico
diff --git a/shareit/static/robots.txt b/shareit/static/robots.txt
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/shareit/static/robots.txt
diff --git a/shareit/templates/base.html b/shareit/templates/base.html
new file mode 100644
index 0000000..85e840f
--- /dev/null
+++ b/shareit/templates/base.html
@@ -0,0 +1,12 @@
+<!doctype html>
+<html>
+<head>
+    <title>{% block title %}Home{% endblock %} - Shareit</title>
+    <link rel="icon" sizes="256 128 64 32 16" href="/favicon.ico" />
+    <link rel="icon" type="image/x-icon" href="/favicon.ico" />
+    <link rel="icon" href="/favicon.ico" />
+</head>
+<body>
+    {% block content %}{% endblock %}
+</body>
+</html>
diff --git a/shareit/templates/propose_upload.html b/shareit/templates/propose_upload.html
new file mode 100644
index 0000000..c3c8bb9
--- /dev/null
+++ b/shareit/templates/propose_upload.html
@@ -0,0 +1,21 @@
+{% extends "base.html" %}
+{% block title %}
+{% if lang == 'en' %}Upload{% else %}Dépôt{% endif %}
+{% endblock %}
+{% block content %}
+<form action="/upload/" method="post" enctype="multipart/form-data">
+
+<p>
+    {% if lang == 'en' %}
+    <label for="browse_file">Select your file:</label>
+    {% else %}
+    <label for="browse_file">Sélectionnez votre fichier:</label>
+    {% endif %}
+
+    <input type="file" id="browse_file" name="upload" />
+
+    <input type="submit" />
+</p>
+
+</form>
+{% endblock content %}
diff --git a/shareit/templates/upload.html b/shareit/templates/upload.html
new file mode 100644
index 0000000..5d9fb31
--- /dev/null
+++ b/shareit/templates/upload.html
@@ -0,0 +1,33 @@
+{% extends "base.html" %}
+{% block title
+%}{% if lang == 'en'
+    %}Correctly uploaded{%
+else
+    %}Téléchargé correctement{%
+endif %}{% endblock %}
+{% block content %}
+{% if lang == 'en' %}
+<p>
+    Your file was correctly uploaded. <br />
+    It will be available for 10 days. <br />
+    To share it with others, use this link:
+    <a href="{{link}}" >{{link}}</a> <br />
+    You can check the integrity of your download with the md5 hash: {{digest}}
+</p>
+<p>
+    <a href="/">Go back to the upload form</a>
+</p>
+{% else %}
+<p>
+    Votre fichier a correctement été enregistré sur le serveur. <br />
+    Il sera disponible pendant 10 jours. <br />
+    Pour le partager avec d'autres personnes, utilisez ce lien:
+    <a href="{{link}}" >{{link}}</a> <br />
+    Vous pouvez vérifier l'intégrité de votre téléchargement via la somme md5
+    suivante: {{digest}}
+</p>
+<p>
+    <a href="/">Revenir sur le formulaire d'envoi de fichiers</a>
+</p>
+{% endif %}
+{% endblock %}