added link verification

src/application.py

@@ -10,7 +10,6 @@
 import calc
 import downloader
 from help import *
-import sys
 
 socketio = SocketIO(app)
 
@@ -200,6 +199,17 @@ def getMembers(group):
     socketio.emit('memberList', out, to=flask.request.sid)
 
 
+@socketio.on('checkURL')
+def checkURL(url):
+    message = downloader.check(url)
+    if message == "":
+        message = "urlCheck0A calendar was found at this link!"
+    else:
+        message = "urlCheck1" + message
+    socketio.emit('stringtype', message, to=flask.request.sid)
+
+
+
 @app.route('/')
 def get_in():
     return flask.render_template('input.html')
@@ -215,6 +225,10 @@ def get_blank():
     return flask.render_template('blank.html')
 
 
+@app.route('/verifyURL')
+def get_verifier():
+    return flask.render_template("verifyURL.html")
+
 @app.errorhandler(Exception)
 def page404(e):
     try:

src/downloader.py

@@ -1,6 +1,8 @@
 import icalendar
 import calc
 
+from sanitizer import isCalendar
+
 
 def local(start, end, path, calendars, i, socketio, sid):
     """
@@ -20,3 +22,19 @@ def run(start, end, path, calendars, i, socketio, sid):
     calendar = calc.get_cal(path, start, end)
     calendars[i] = calendar
     socketio.emit('loadUpdate', i, to=sid)
+
+def check(url):
+    """
+    Checks validity of a url
+    """
+    message = ""
+    try:
+        calendar = isCalendar(url) # downloads cal
+        if(calendar):
+            if calendar.get("CALSCALE", "GREGORIAN") != "GREGORIAN":
+                message = "Only gregorian calendars can be loaded!"
+        else:
+            message = "Calendar not found!"
+    except:
+        message = "Error on load!"
+    return message

src/static/css/style.css

@@ -245,7 +245,7 @@ nav {
     padding-right: 1rem;
 }
 
-#loadingMembers {
+#loading {
     width: 25px;
 }
 

src/static/js/inputVisuals.js

@@ -48,7 +48,7 @@ function loadMembers(members) {
         member.id = 'member ' + i;
         container.appendChild(member);
     }
-    document.getElementById('loadingMembers').style.display = 'none';
+    document.getElementById('loading').style.display = 'none';
     updateSearchScrollArrows();
 }
 

src/static/js/sock.js

@@ -8,10 +8,23 @@ function emitData(event, data) {
    socket.emit(event, data)
 }
 
+function ayylmao(string){
+   if(string.startsWith('urlCheck')){
+      checkResults(string.substring(8));
+   }
+   else{
+      alert(string);
+   }
+}
+
 socket.on('redirect', (dest) => {
    window.location.href = dest;
 });
 
+socket.on('stringtype', (string) => {
+   ayylmao(string);
+});
+
 socket.on('loader', (status) => {
    loadStatus(status);
 });
@@ -34,4 +47,4 @@ socket.on('loaded', (output) => {
 socket.on('loadUpdate', (index) => {
    let list = document.getElementById('calendarStatus');
    list.children[index].querySelector('.progressBar').style.backgroundColor = "lightgray";
-});
+});

src/static/js/verifyURL.js

@@ -0,0 +1,18 @@
+function checkURL(){
+    const url = document.querySelector('#urlVerify').value;
+    document.querySelector('#loading').classList.remove('hidden');
+    emitData('checkURL', url);
+}
+
+function checkResults(result){
+    let resultsDiv = document.querySelector('#checkResults');
+    if(result[0] == '0'){
+        resultsDiv.querySelector('img').src = "../static/images/check.svg"
+    }
+    else{
+        resultsDiv.querySelector('img').src = "../static/images/close.svg"
+    }
+    resultsDiv.querySelector('p').textContent = result.substring(1);
+    resultsDiv.classList.remove('hidden');
+    document.querySelector('#loading').classList.add('hidden');
+}

src/templates/about.html

@@ -9,7 +9,7 @@ <h4>Slate will never reveal users' calendars or event details to users.</h4>
     <p><a href="https://github.com/asimonson1125/Slate/releases/tag/1.0.0">The initial version of Slate</a> is the
         2021-22 major project by Andrew
         Simonson.</p>
-    <p>In <a href='https://www.slate.csh.rit.edu'>version 2.0</a> the project (now 2022-23 major project, also Andrew
+    <p>In <a href='https://slate.csh.rit.edu'>version 2.0</a> the project (now 2022-23 major project, also Andrew
         Simonson) gained a much improved UX, large performance improvements, <a href='https://www.csh.rit.edu'>
             Computer Science House</a> service integration, and basic analytics. This iteration is the first I consider
         publishable (delivers on all base objectives and is user-friendly)</p>

src/templates/header.html

@@ -22,6 +22,7 @@
     <script src="../static/js/validateForm.js" type="text/javascript"></script>
     <script src="../static/js/inputVisuals.js"></script>
     <script src="../static/js/header.js"></script>
+    <script src="../static/js/verifyURL.js"></script>
     <title>CSH Slate</title>
     {% block headAdditions %}{% endblock %}
 </head>
@@ -42,7 +43,10 @@
                         <a href="/about">
                             <p class="noMargin">About Slate</p>
                         </a>
-                        <p class="eventable" onclick="emit('example')">Example usage</p>
+                        <p class="eventable" onclick="emit('example')">Example Usage</p>
+                        <a href="/verifyURL">
+                            <p class="noMargin">Link Verifier</p>
+                        </a>
                         {% if current_user.is_authenticated %}
                         <div>
                             <div class="dropdown-toggle" href="#" id="user01">

src/templates/input.html

@@ -59,7 +59,7 @@ <h3>Select Participating Members</h3>
             <input type="text" name="memberDirect" placeholder="search name or username" oninput="searchForMembers()"
                 id="searchMembers">
             <button type="button" onclick="selectAll()">(De)Select All Displayed</button>
-            <img id='loadingMembers' src='../static/images/blue_spinner.gif' alt='loading members' />
+            <img id='loading' src='../static/images/blue_spinner.gif' alt='loading members' />
             <script>emitData('getMembers', 'active')</script>
             <br />
         </div>

src/templates/verifyURL.html

@@ -0,0 +1,17 @@
+{% extends "header.html" %}
+{% block content %}
+<div class="box">
+    <form action="javascript:checkURL()">
+        <h2>Verify your url points to a ics calendar</h2>
+        <p>Webservers can be picky when fufilling requests, links that work in your browser might still not work in Slate</p>
+        <input type="text" id="urlVerify" name="urlVerify" placeholder="URL">
+        <input type="submit" value="Submit">
+        <img id='loading' src='../static/images/blue_spinner.gif' alt='loading members' class="hidden" />
+        <br />
+    </form>
+    <div id="checkResults" class="hidden" style="display: flex">
+        <img alt="result" width="30px"/>
+        <p></p>
+    </div>
+</div>
+{% endblock %}