Implement password reset

emails/reset-password

@@ -0,0 +1,13 @@
+Someone, probably you, wants to reset your donor password.
+
+To proceed, click this link:
+
+{{root}}/password-reset/{{user.password_reset}}
+
+This link expires in 24 hours. If you don't want to change your password or you
+weren't expecting this email, just ignore it.
+
+If you have questions, send an email to {{your_email}}.
+
+--
+{{your_name}}

fosspay/blueprints/html.py

@@ -5,7 +5,7 @@ from fosspay.objects import *
 from fosspay.database import db
 from fosspay.common import *
 from fosspay.config import _cfg, load_config
-from fosspay.email import send_thank_you
+from fosspay.email import send_thank_you, send_password_reset
 
 import os
 import locale
@@ -40,13 +40,13 @@ def setup():
     email = request.form.get("email")
     password = request.form.get("password")
     if not email or not password:
-        return redirect("/") # TODO: Tell them what they did wrong (i.e. being stupid)
+        return redirect("..") # TODO: Tell them what they did wrong (i.e. being stupid)
     user = User(email, password)
     user.admin = True
     db.add(user)
     db.commit()
     login_user(user)
-    return redirect("/admin?first-run=1")
+    return redirect("admin?first-run=1")
 
 @html.route("/admin")
 @adminrequired
@@ -72,14 +72,14 @@ def create_project():
     project = Project(name)
     db.add(project)
     db.commit()
-    return redirect("/admin")
+    return redirect("admin")
 
 @html.route("/login", methods=["GET", "POST"])
 def login():
     if current_user:
         if current_user.admin:
-            return redirect("/admin")
-        return redirect("/panel")
+            return redirect("admin")
+        return redirect("panel")
     if request.method == "GET":
         return render_template("login.html")
     email = request.form.get("email")
@@ -93,14 +93,14 @@ def login():
         return render_template("login.html", errors=True)
     login_user(user)
     if user.admin:
-        return redirect("/admin")
-    return redirect("/panel")
+        return redirect("admin")
+    return redirect("panel")
 
 @html.route("/logout")
 @loginrequired
 def logout():
     logout_user()
-    return redirect("/")
+    return redirect("..")
 
 @html.route("/donate", methods=["POST"])
 @json_output
@@ -171,23 +171,41 @@ def donate():
     else:
         return { "success": True, "new_account": new_account }
 
+def issue_password_reset(email):
+    user = User.query.filter(User.email == email).first()
+    if not user:
+        return render_template("reset.html", errors="No one with that email found.")
+    user.password_reset = binascii.b2a_hex(os.urandom(20)).decode("utf-8")
+    user.password_reset_expires = datetime.now() + timedelta(days=1)
+    send_password_reset(user)
+    db.commit()
+    return render_template("reset.html", done=True)
+
 @html.route("/password-reset", methods=['GET', 'POST'], defaults={'token': None})
 @html.route("/password-reset/<token>", methods=['GET', 'POST'])
 def reset_password(token):
-    if not token and request.method == "POST":
+    if request.method == "GET" and not token:
+        return render_template("reset.html")
+
+    if request.method == "POST":
         token = request.form.get("token")
+        email = request.form.get("email")
+
+        if email:
+            return issue_password_reset(email)
+
         if not token:
-            redirect("/")
-    else:
-        redirect("/")
+            return redirect("..")
+
     user = User.query.filter(User.password_reset == token).first()
     if not user:
-        redirect("/")
+        return render_template("reset.html", errors="This link has expired.")
+
     if request.method == 'GET':
         if user.password_reset_expires == None or user.password_reset_expires < datetime.now():
-            return render_template("reset.html", expired=True)
+            return render_template("reset.html", errors="This link has expired.")
         if user.password_reset != token:
-            redirect("/")
+            redirect("..")
         return render_template("reset.html", token=token)
     else:
         if user.password_reset_expires == None or user.password_reset_expires < datetime.now():
@@ -202,7 +220,7 @@ def reset_password(token):
         user.password_reset_expires = None
         db.commit()
         login_user(user)
-        return redirect("/panel")
+        return redirect("panel")
 
 @html.route("/panel")
 @loginrequired

fosspay/email.py

@@ -31,3 +31,23 @@ def send_thank_you(user, amount, monthly):
     message['To'] = user.email
     smtp.sendmail(_cfg("smtp-from"), [ user.email ], message.as_string())
     smtp.quit()
+
+def send_password_reset(user):
+    if _cfg("smtp-host") == "":
+        return
+    smtp = smtplib.SMTP(_cfg("smtp-host"), _cfgi("smtp-port"))
+    smtp.login(_cfg("smtp-user"), _cfg("smtp-password"))
+    with open("emails/reset-password") as f:
+        message = MIMEText(html.parser.HTMLParser().unescape(\
+            pystache.render(f.read(), {
+                "user": user,
+                "root": _cfg("protocol") + "://" + _cfg("domain"),
+                "your_name": _cfg("your-name"),
+                "your_email": _cfg("your-email")
+            })))
+    message['X-MC-PreserveRecipients'] = "false"
+    message['Subject'] = "Reset your donor password"
+    message['From'] = _cfg("smtp-from")
+    message['To'] = user.email
+    smtp.sendmail(_cfg("smtp-from"), [ user.email ], message.as_string())
+    smtp.quit()

templates/reset.html

@@ -0,0 +1,43 @@
+{% extends "layout.html" %}
+{% block body %} 
+<div class="well">
+    <div class="container">
+        <h1>Donate to {{ _cfg("your-name") }}</h1>
+    </div>
+</div>
+<div class="container">
+    <div class="row">
+        <div class="col-md-6 col-md-offset-3">
+            <h1>Reset Password</h1>
+            {% if errors %}
+                <div class="alert alert-danger">
+                    <p>
+                    {{ errors }}
+                    </p>
+                </div>
+            {% endif %}
+            {% if done %}
+                <p>
+                    An email should arrive shortly. If you need help, contact
+                    <a href="mailto:{{_cfg("your-email")}}">{{_cfg("your-email")}}</a>.
+                </p>
+            {% elif token %}
+                <form action="{{root}}/password-reset" method="POST">
+                    <div class="form-group">
+                        <input class="form-control" type="password" name="password" placeholder="New password" />
+                        <input type="hidden" name="token" value="{{ token }}" />
+                    </div>
+                    <input type="submit" value="Submit" class="btn btn-primary" />
+                </form>
+            {% else %}
+                <form action="{{root}}/password-reset" method="POST">
+                    <div class="form-group">
+                        <input class="form-control" type="text" name="email" placeholder="your@email.com" />
+                    </div>
+                    <input type="submit" value="Submit" class="btn btn-primary" />
+                </form>
+            {% endif %}
+        </div>
+    </div>
+</div>
+{% endblock %}