src: login works

README.md

@@ -5,9 +5,15 @@ The blog is intended to be used to review and critique things.
 
 ## Features/To-Dos
 
-- [ ] Plain text support for blog entries
-  - [ ] HTML files (.html)
-  - [ ] Markdown Files (.md)
+
+- [ ] Accounts
+  - [x] Login
+  - [x] Logout
+  - [ ] Register
+- [ ] Review blog entries
+  - [ ] Writing entries
+  - [ ] Editing entries
+  - [ ] Deleting entries
 - [ ] Infinite-scroll blog page
 - [ ] Archive page
   - [ ] Months as headings
@@ -16,14 +22,16 @@ The blog is intended to be used to review and critique things.
 - [ ] Standalone article page
   - [ ] Links to scrolling blog page
 - [ ] RSS feed
-- [ ] Navigation
-  - [ ] Header
-  - [ ] Footer
-- [ ] Switchable CSS
-  - [ ] CSS dark-theme
-  - [ ] CSS light-theme
-- [ ] Config file
-- [ ] Docker installation
+- [ ] Eye candy
+  - [ ] Star rating
+  - [ ] Rich text editor
+- [x] Navigation
+  - [x] Header
+  - [x] Footer
+- [x] Switchable CSS
+  - [x] CSS dark-theme
+  - [x] CSS light-theme
+- [x] Docker installation
 - [ ] Logo
 
 ## Usage
@@ -49,11 +57,10 @@ The `config.py` can be found in the `src` folder.
 Set the following volumes with the -v tag.
 
 | Volume-Name   | Container mount        | Description                        |
-| ------------- | --------------------------- | ------------------------------------------------------------ |
+| ------------- | ---------------------- | ---------------------------------- |
 | `config-file` | `/blog/src/config.py`  | Config file                        |
-| `entries`     | `/blog/src/templates/entry` | Directory for blog entries                                   |
 | `css`         | `/blog/src/static/css` | (optional) Directory for css files |
-| `html`        | `/blog/src/templates`       | (optional) Directory for templates (entry-volume not needed) |
+| `html`        | `/blog/src/templates`  | (optional) Directory for templates |
 
 #### Ports
 

src/app.py

@@ -1,58 +1,24 @@
 from flask import Flask, flash, make_response, render_template, request, redirect, abort, url_for
 from flask_login import current_user, login_user, LoginManager, logout_user
+from flask_wtf import CSRFProtect
 
 import content as con_gen
 import config
 
-from flask_wtf import FlaskForm
-from wtforms import StringField, PasswordField, SubmitField, BooleanField
-from wtforms.validators import DataRequired
-
 
 app = Flask(__name__)
-login = LoginManager(app)
-login.login_view = 'login'
+csrf = CSRFProtect()
+app.secret_key = "123534"
+csrf.init_app(app)
 
-class LoginForm(FlaskForm):
-    username = StringField("Username", validators=[DataRequired()])
-    password = PasswordField("Password", validators=[DataRequired()])
-    remember_me = BooleanField("Remember Me")
-    submit = SubmitField("Sign In")
+login = LoginManager(app)
+login.login_view = "login"
 
 TITLE = config.TITLE
 STYLE = config.STYLE
 DESCRIPTION = config.DESCRIPTION
 WEBSITE = config.WEBSITE
 
-from werkzeug.security import generate_password_hash, check_password_hash
-
-class User():
-
-    def __init__(self, username):
-        self.username = username
-        self.id = 1
-        self.is_active = True
-        self.is_authenticated = False
-        self.is_anonymous = False
-
-    def set_password(self, password):
-        self.password_hash = generate_password_hash(password)
-
-    def check_password(self, password):
-        return check_password_hash(self.password_hash, password)
-
-    def get_id(self):
-        return self.id
-
-u = User("marten")
-u.set_password("test")
-
-class Config(object):
-    SECRET_KEY = "123534"
-
-app.config.from_object(Config)
-
-
 @app.errorhandler(404)
 def page_not_found(e):
     return render_template("error.html", title=TITLE, errorcode="404", style=STYLE), 404
@@ -67,7 +33,7 @@ def index():
 
 @app.route("/archive")
 @app.route("/archive.html")
-def blog_archive():
+def archive():
     content = con_gen.gen_arch_string()
     return render_template("archive.html", title=TITLE, content_string=content, style=STYLE)
 
@@ -91,24 +57,36 @@ def feed():
     return response
 
 @login.user_loader
-def load_user(id):
+def load_user(ident):
     ## TODO: load user from db by id
-    return id
+    db_user = db.get_by_id(ident)
+    if db_user is not None:
+        return db.db_to_user(*db_user)
+    return None
+
+from login import LoginForm, User
+from database import Database
+
+db = Database()
 
 @app.route("/login", methods=["GET", "POST"])
+@app.route("/login.html", methods=["GET", "POST"])
 def login():
-    #if current_user.is_authenticated:
-    #    return redirect("/index")
+    if current_user.is_authenticated:
+        return redirect(url_for("index"))
     form = LoginForm()
     if form.validate_on_submit():
-        user = u
-        #user = form.username.data
-        if user is None or not user.check_password(form.password.data):
+        db_user = db.get_by_name(form.username.data)
+        if db_user is None:
+            flash("Invalid username or password")
+            return redirect(url_for("login"))
+        user = db.db_to_user(*db_user)
+        if not user.check_password(form.password.data):
             flash("Invalid username or password")
             return redirect(url_for("login"))
         login_user(user, remember=form.remember_me.data)
         return redirect(url_for("index"))
-    return render_template("login.html", title="Sign In", form=form, style=STYLE)
+    return render_template("login.html", title=TITLE, form=form, style=STYLE)
 
 @app.route('/logout')
 def logout():

src/content.py

@@ -1,5 +1,3 @@
-ENTRY_DIR = "templates/entry"
-
 def gen_arch_string():
     """
     Creates and returns a archive string of every file in ENTRY_DIR.

src/database.py

@@ -0,0 +1,66 @@
+import os
+import sqlite3
+
+from login import User
+
+
+class Database:
+
+    def __init__(self):
+        self.TABLE_FILE = 'USERS'
+        self.DB_DIR = os.path.dirname(".")
+        self.setup_db()
+
+    def connect(self):
+        """Connect to an existing database instance based on the object
+        attributes.
+        """
+        path = os.path.join(self.DB_DIR, "data.db")
+        return sqlite3.connect(path)
+
+    def setup_db(self):
+        """Creates a database with tables."""
+        db = self.connect()
+        crs = db.cursor()
+        query = "CREATE TABLE IF NOT EXISTS " + self.TABLE_FILE + \
+            "(id INTEGER PRIMARY KEY AUTOINCREMENT," + \
+            "name CHAR(32) NOT NULL UNIQUE," + \
+            "password CHAR(32) NOT NULL)"
+        crs.execute(query)
+
+    def insert_user(self, name, password):
+        """Insert a new user into the database.
+        """
+        if self.check_name(name):
+            db = self.connect()
+            crs = db.cursor()
+            query = "INSERT INTO " + self.TABLE_FILE + "(`name`,`password`)" + \
+                    "VALUES (?, ?) ON CONFLICT DO NOTHING"
+            crs.execute(query, (name, password))
+            db.commit()
+            return True
+        return False
+
+    def check_name(self, name):
+        if self.get_by_name(name) is None:
+            return True
+        return False
+
+    def get_by_id(self, ident):
+        db = self.connect()
+        crs = db.cursor()
+        query = "SELECT * FROM " + self.TABLE_FILE + " WHERE id = ?"
+        crs.execute(query, (ident, ))
+        return crs.fetchone()
+
+    def get_by_name(self, name):
+        db = self.connect()
+        crs = db.cursor()
+        query = "SELECT * FROM " + self.TABLE_FILE + " WHERE name = ?"
+        crs.execute(query, (name, ))
+        return crs.fetchone()
+
+    def db_to_user(self, ident, name, pass_hash):
+        user = User(name, pass_hash)
+        user.set_id(ident)
+        return user

src/login.py

@@ -0,0 +1,34 @@
+from flask_wtf import FlaskForm
+from wtforms import StringField, PasswordField, SubmitField, BooleanField
+from wtforms.validators import DataRequired
+
+from werkzeug.security import generate_password_hash, check_password_hash
+
+
+class User():
+
+    def __init__(self, name, pass_hash=None):
+        self.name = name
+        self.id = 0
+        self.is_active = True
+        self.is_authenticated = True
+        self.is_anonymous = False
+        self.pass_hash = pass_hash
+
+    def set_password(self, password):
+        self.pass_hash = generate_password_hash(password)
+
+    def set_id(self, ident):
+        self.id = ident
+
+    def check_password(self, password):
+        return check_password_hash(self.pass_hash, password)
+
+    def get_id(self):
+        return self.id
+
+class LoginForm(FlaskForm):
+    username = StringField("Username", validators=[DataRequired()])
+    password = PasswordField("Password", validators=[DataRequired()])
+    remember_me = BooleanField("Remember Me")
+    submit = SubmitField("Sign In")

src/requirements.txt

@@ -1,4 +1,5 @@
 Flask==2.1.2
-flask_login==0.6.2
-flask_wtf==1.0.1
-WTForms==3.0.1
+Flask_Login==0.6.2
+Flask_WTF==0.14.3
+Werkzeug==2.1.2
+WTForms==2.2.1

src/templates/login.html

@@ -1,6 +1,9 @@
 {% extends "template.html" %}
 
 {% block content %}
+
+<div class="container">
+    <div class="logging">
         <h1>Sign In</h1>
         <form action="" method="post" novalidate>
             {{ form.hidden_tag() }}
@@ -14,5 +17,10 @@
             </p>
             <p>{{ form.remember_me() }} {{ form.remember_me.label }}</p>
             <p>{{ form.submit() }}</p>
+            {% for mesg in get_flashed_messages() %}
+            <p>{{ mesg }}</p>
+            {% endfor %}
         </form>
+    </div>
+</div>
 {% endblock %}

src/templates/template.html

@@ -13,13 +13,13 @@
         <input type="checkbox" id="main-menu-check">
         <label for="main-menu-check" class="show-menu">&#9776;</label>
         <div class="main-menu">
-            <a href="/">Blog</a>
-            <a href="/archive">Archive</a>
+            <a href="{{ url_for('index') }}">Blog</a>
+            <a href="{{ url_for('archive') }}">Archive</a>
             <label for="main-menu-check" class="hide-menu">X</label>
             {% if current_user.is_anonymous %}
-            <a href="/login">Login</a>
+            <a href="{{ url_for('login') }}">Login</a>
             {% else %}
-            <a href="/logout">Logout</a>
+            <a href="{{ url_for('logout') }}">Logout</a>
             {% endif %}
         </div>
     </div>