From 8c3e0e08b628fd79382201d613f27a3ddfe8ed5e Mon Sep 17 00:00:00 2001
From: s3lph <1375407-s3lph@users.noreply.gitlab.com>
Date: Sat, 22 Oct 2022 16:14:19 +0200
Subject: [PATCH] v0.2.14: Present an on-screen keyboard and disable file
 upload in kiosk mode (localhost)

---
 CHANGELOG.md                                  |  13 ++
 README.md                                     |   1 +
 matemat/__init__.py                           |   2 +-
 matemat/webserver/pagelets/signup.py          |   7 ++
 package/debian/matemat/DEBIAN/control         |   6 +-
 package/debian/matemat/etc/matemat.conf       |   7 ++
 .../matemat/usr/lib/matemat/matemat.conf      |   2 +
 setup.py                                      |   3 +-
 static/css/matemat.css                        |  44 +++++++
 templates/signup_kiosk.html                   | 117 ++++++++++++++++++
 10 files changed, 197 insertions(+), 5 deletions(-)
 create mode 100644 templates/signup_kiosk.html

diff --git a/CHANGELOG.md b/CHANGELOG.md
index a800353..0d1a580 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,18 @@
 # Matemat Changelog
 
+<!-- BEGIN RELEASE v0.2.14 -->
+## Version 0.2.14
+
+UX release
+
+### Changes
+
+<!-- BEGIN CHANGES 0.2.14 -->
+- Present an on-screen keyboard and disable file upload in kiosk mode (localhost)
+<!-- END CHANGES 0.2.14 -->
+
+<!-- END RELEASE v0.2.14 -->
+
 <!-- BEGIN RELEASE v0.2.13 -->
 ## Version 0.2.13
 
diff --git a/README.md b/README.md
index 2902bfa..3e48955 100644
--- a/README.md
+++ b/README.md
@@ -21,6 +21,7 @@ This project intends to provide a well-tested and maintainable alternative to
   - file-magic
   - jinja2
   - Pillow
+  - netaddr
   
 ## Usage
 
diff --git a/matemat/__init__.py b/matemat/__init__.py
index 4b94a86..215eb4c 100644
--- a/matemat/__init__.py
+++ b/matemat/__init__.py
@@ -1,2 +1,2 @@
 
-__version__ = '0.2.13'
+__version__ = '0.2.14'
diff --git a/matemat/webserver/pagelets/signup.py b/matemat/webserver/pagelets/signup.py
index bc68611..c3b31c0 100644
--- a/matemat/webserver/pagelets/signup.py
+++ b/matemat/webserver/pagelets/signup.py
@@ -6,6 +6,7 @@ from io import BytesIO
 import magic
 from bottle import get, post, redirect, abort, request, FormsDict
 from PIL import Image
+import netaddr
 
 from matemat.db import MatematDatabase
 from matemat.db.primitives import User
@@ -89,5 +90,11 @@ def signup():
             redirect('/')
     elif request.method != 'GET':
         abort(405, 'Method not allowed')
+
+    acl = netaddr.IPSet([addr.strip() for addr in config.get('SignupKioskMode', '').split(',')])
+    if request.remote_addr in acl:
+        return template.render('signup_kiosk.html',
+                               zip=zip,
+                               setupname=config['InstanceName'])
     return template.render('signup.html',
                            setupname=config['InstanceName'])
diff --git a/package/debian/matemat/DEBIAN/control b/package/debian/matemat/DEBIAN/control
index 3cce219..ecb2f61 100644
--- a/package/debian/matemat/DEBIAN/control
+++ b/package/debian/matemat/DEBIAN/control
@@ -1,10 +1,10 @@
 Package: matemat
-Version: 0.2.13
-Maintainer: s3lph <account-gitlab-ideynizv@kernelpanic.lol>
+Version: 0.2.14
+Maintainer: s3lph <1375407-s3lph@users.noreply.gitlab.com>
 Section: web
 Priority: optional
 Architecture: all
-Depends: python3 (>= 3.6), python3-bottle, python3-jinja2, python3-magic, python3-pil
+Depends: python3 (>= 3.6), python3-bottle, python3-jinja2, python3-magic, python3-netaddr, python3-pil
 Description: Soda machine stock-keeping webservice
  A web service for automated stock-keeping of a soda machine written in Python.
  It provides a touch-input-friendly user interface (as most input happens
diff --git a/package/debian/matemat/etc/matemat.conf b/package/debian/matemat/etc/matemat.conf
index 1339a49..f76f673 100644
--- a/package/debian/matemat/etc/matemat.conf
+++ b/package/debian/matemat/etc/matemat.conf
@@ -28,5 +28,12 @@ InstanceName=Matemat
 #
 # SmtpSendReceipts=1
 
+#
+# Permit user signup
+#
+#SignupEnabled=1
+#SignupKioskMode= ::1, ::ffff:127.0.0.0/8, 127.0.0.0/8
+
+
 # Add static HTTP headers in this section
 # [HttpHeaders]
diff --git a/package/debian/matemat/usr/lib/matemat/matemat.conf b/package/debian/matemat/usr/lib/matemat/matemat.conf
index 5c34f56..364af72 100644
--- a/package/debian/matemat/usr/lib/matemat/matemat.conf
+++ b/package/debian/matemat/usr/lib/matemat/matemat.conf
@@ -9,3 +9,5 @@ LogTarget=stdout
 
 UploadDir=/var/lib/matemat/upload
 DatabaseFile=/var/lib/matemat/matemat.db
+
+SignupKioskMode= ::1, ::ffff:127.0.0.0/8, 127.0.0.0/8
\ No newline at end of file
diff --git a/setup.py b/setup.py
index c135a73..40c2079 100644
--- a/setup.py
+++ b/setup.py
@@ -22,7 +22,8 @@ soda machine's touch screen).
         'bottle',
         'file-magic',
         'jinja2',
-        'Pillow'
+        'Pillow',
+        'netaddr'
     ],
     test_loader='unittest:TestLoader',
     entry_points={
diff --git a/static/css/matemat.css b/static/css/matemat.css
index 3b38c84..0cbfc0f 100644
--- a/static/css/matemat.css
+++ b/static/css/matemat.css
@@ -249,4 +249,48 @@
 
 #transfer-userlist-list > li.active {
     background: #60f060;
+}
+
+
+div.osk-kbd {
+    display: none;
+    font-family: sans-serif;
+    position: fixed;
+    left: 0;
+    bottom: 0;
+    right: 0;
+    flex-direction: column;
+    z-index: 100;
+    background: white;
+    font-size: 5vh;
+}
+
+div.osk-kbd.visible {
+    display: flex;
+}
+
+div.osk-kbd-row {
+    width: 100%;
+    height: 10vh;
+    flex-grow: 1;
+    display: flex;
+    flex-direction: row;
+}
+
+div.osk-button {
+    flex: 1 0 1px;
+    background: #f0f0f0;
+    padding: 5px;
+    margin: 2px;
+    text-align: center;
+    line-height: calc(10vh - 10px);
+}
+
+div.osk-button:active, div.osk-button.osk-locked {
+    background: #606060;
+}
+
+div.osk-button.osk-button-space {
+    flex: 5 0 1px;
+    color: #606060;
 }
\ No newline at end of file
diff --git a/templates/signup_kiosk.html b/templates/signup_kiosk.html
new file mode 100644
index 0000000..0916236
--- /dev/null
+++ b/templates/signup_kiosk.html
@@ -0,0 +1,117 @@
+{% extends "base.html" %}
+
+{% block header %}
+    <h1>Signup</h1>
+    {{ super() }}
+{% endblock %}
+
+{% block main %}
+
+    {# Show a username/password signup form #}
+    <form method="post" action="/signup" id="signupform" enctype="multipart/form-data" accept-charset="UTF-8">
+        <label for="signup-username"><b>Username</b>: </label>
+        <input id="signup-username" type="text" name="username" required="required" class="osk-target"/><br/>
+
+        <label for="signup-password"><b>Choose a password</b>: </label>
+        <input id="signup-password" type="password" name="password" required="required" class="osk-target"/><br/>
+
+        <label for="signup-password2"><b>Repeat password</b>: </label>
+        <input id="signup-password2" type="password" name="password2" required="required" class="osk-target"/><br/>
+
+        <label for="signup-touchkey">Draw a touchkey (touchscreen login pattern)</label>
+        <br/>
+        <svg id="touchkey-svg" width="400" height="400"></svg>
+        <br/>
+        <input id="signup-touchkey" type="hidden" name="touchkey" value="" />
+
+        <input type="submit" value="Create account">
+    </form>
+
+    <div id="osk-kbd" class="osk osk-kbd">
+        {% set lower = [['1','2','3','4','5','6','7','8','9','0','-','⌫'],
+                        ['q','w','e','r','t','y','u','i','o','p','[','⇥'],
+                        ['a','s','d','f','g','h','j','k','l',';','\'','⇤'],
+                        ['z','x','c','v','b','n','m',',','.','/','{','⇧'],
+                        ['SPACE']] %}
+        {% set upper = [['!','@','#','$','%','^','&','*','(',')','_','⌫'],
+                        ['Q','W','E','R','T','Y','U','I','O','P',']','⇥'],
+                        ['A','S','D','F','G','H','J','K','L',':','"','⇤'],
+                        ['Z','X','C','V','B','N','M','<','>','?','}','⇧'],
+                        ['SPACE']] %}
+        {% for lrow, urow in zip(lower, upper) %}
+        <div class="osk osk-kbd-row">
+            {% for lc, uc in zip(lrow, urow) %}
+            <div tabindex="1000" class="osk osk-button{% if lc == 'SPACE' %} osk-button-space{% endif %}" data-lowercase="{{ lc }}" data-uppercase="{{ uc }}">{{ lc }}</div>
+            {% endfor %}
+        </div>
+        {% endfor %}
+    </div>
+
+    <script src="/static/js/touchkey.js" ></script>
+    <script>
+        initTouchkey(true, 'touchkey-svg', null, 'signup-touchkey');
+    </script>
+    <script>
+        let lastfocus = null;
+        let shift = 0;
+        let osk = document.getElementById('osk-kbd');
+        let inputs = [].slice.call(document.getElementsByClassName('osk-target'));
+        let oskButtons = document.getElementsByClassName('osk-button');
+        for (let i = 0; i < inputs.length; ++i) {
+            inputs[i].onfocus = () => {
+                osk.classList.add('visible');
+            }
+            inputs[i].onblur = (blur) => {
+                if (blur.relatedTarget !== undefined && blur.relatedTarget !== null && blur.relatedTarget.classList.contains('osk')) {
+                    lastfocus = blur.target;
+                } else {
+                    lastfocus = null;
+                    if (blur.relatedTarget === undefined || blur.relatedTarget === null || !blur.relatedTarget.classList.contains('osk-target')) {
+                        osk.classList.remove('visible');
+                    }
+                }
+            }
+        }
+        for (let i = 0; i < oskButtons.length; ++i) {
+            oskButtons[i].onclick = (click) => {
+                if (lastfocus === null || lastfocus === undefined) {
+                    return;
+                }
+                let btn = click.target.innerText;
+                let idx = inputs.indexOf(lastfocus);
+                switch (btn) {
+                    case '⇥':
+                        lastfocus = inputs[(idx + 1) % inputs.length];
+                        break;
+                    case '⇤':
+                        lastfocus = inputs[(((idx - 1) % inputs.length) + inputs.length) % inputs.length];
+                        break;
+                    case '⌫':
+                        if (lastfocus.value.length > 0) {
+                            lastfocus.value = lastfocus.value.substring(0, lastfocus.value.length-1);
+                        }
+                        break;
+                    case 'SPACE':
+                        lastfocus.value += ' ';
+                        break;
+                    case '⇧':
+                        shift = !shift;
+                        click.target.classList.toggle('osk-locked');
+                        for (let j = 0; j < oskButtons.length; ++j) {
+                            oskButtons[j].innerText = oskButtons[j].getAttribute(shift ? 'data-uppercase' : 'data-lowercase');
+                        }
+                        break;
+                    default: {
+                        lastfocus.value += btn;
+                        break;
+                    }
+                }
+                lastfocus.focus();
+            }
+        }
+
+    </script>
+
+    {{ super() }}
+
+{% endblock %}