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| from flask import Flask, abort, render_template_string, request, render_template, redirect, url_for, session, flash, g
from utils import rot13, key
import sqlite3
app = Flask(__name__)
app.secret_key = 'your_secret_key'
app.config['DATABASE'] = 'database.db'
def get_db():
db = getattr(g, '_database', None)
if db is None:
db = g._database = sqlite3.connect(app.config['DATABASE'])
return db
@app.teardown_appcontext
def close_connection(exception):
db = getattr(g, '_database', None)
if db is not None:
db.close()
@app.route('/')
def home():
return render_template('home.html')
@app.route('/rot13', methods=['GET', 'POST'])
def rot13_route():
if request.method == 'POST':
action = request.form['action']
text = request.form['text']
if action == 'encrypt':
encrypted_text = rot13(text)
return redirect(url_for('rot13_result', result=encrypted_text, action='encrypt'))
elif action == 'decrypt':
text = request.form['text']
decrypted_text = rot13(text)
if key(decrypted_text):
template = '<h1>Your decrypted text is: {{%s}}</h1>' % decrypted_text
try:
render_template_string(template)
except Exception as e:
abort(404)
return redirect(url_for('rot13_result', result="既然你是黑阔，那我凭什么给你回显", action='decrypt'))
else:
return redirect(url_for('rot13_result', result=decrypted_text, action='decrypt'))
template = '<h1>Your decrypted text is: %s</h1>' % decrypted_text
return render_template_string(template)
return render_template('index.html')
@app.route('/rot13_result/<action>/<result>')
def rot13_result(action, result):
return render_template('rot13_result.html', action=action, result=result)
@app.route('/login', methods=['GET', 'POST'])
def login():
if request.method == 'POST':
username = request.form['username']
password = request.form['password']
db = get_db()
cursor = db.cursor()
cursor.execute("SELECT * FROM users WHERE username = ? AND password = ?", (username, password))
user = cursor.fetchone()
if user:
session['username'] = username
return redirect(url_for('message_board'))
else:
flash('Invalid username or password')
return render_template('login.html')
@app.route('/register', methods=['GET', 'POST'])
def register():
if request.method == 'POST':
username = request.form['username']
password = request.form['password']
db = get_db()
cursor = db.cursor()
try:
cursor.execute("INSERT INTO users (username, password) VALUES (?, ?)", (username, password))
db.commit()
flash('Registration successful! Please log in.')
return redirect(url_for('login'))
except sqlite3.IntegrityError:
flash('Username already exists!')
return render_template('register.html')
@app.route('/message_board', methods=['GET', 'POST'])
def message_board():
if 'username' not in session:
return redirect(url_for('login'))
db = get_db()
cursor = db.cursor()
if request.method == 'POST':
message = request.form['message']
cursor.execute("INSERT INTO messages (username, message) VALUES (?, ?)", (session['username'], message))
db.commit()
cursor.execute("SELECT username, message FROM messages")
messages = cursor.fetchall()
return render_template('message_board.html', messages=messages)
@app.route('/logout')
def logout():
session.pop('username', None)
return redirect(url_for('home'))
if __name__ == '__main__':
app.run(host='0.0.0.0', port=5000, debug=True)
|
