用 bottle.py 写了个简单的升级包上传

可以当作一个 demo 来玩吧，在这里分享一下。里面涉及的内容包含了文件上传，cookie 设置和读取，重定向（redirect）。
from bottle import run, post, get, request, response, redirect
import os

login_page='''
    <b>Sorry! Authentication is needed!</b>
    <form action='/login' enctype="multipart/form-data" method='post'>
    <fieldset>
    <legend>Input passwd for Admin:</legend>
    <label>passwd:</label>
    <input type="password" name="passwd"/>
    <input type='submit' value='submit'>
    </fieldset>
    </form>
    '''
upload_page='''
    <!DOCTYPE html>
    <html>
    <head>
    <title>
    Firmware Update
    </title>
    </head>
    <body>
    <form action='/upload' enctype="multipart/form-data" method='post'>
    <fieldset>
    <legend>Firmware Update:</legend>
    <label>Select the file:</label>
    <input type="file" name="upload"/>
    <input type='submit' value='submit'>
    </fieldset>
    </form>
    </body>
    </html>
    '''
    
@get('/')
def home():
    usr = request.get_cookie("account")
    if usr:
        redirect('/upload')
    else:
        return login_page

@post('/login')
def login():
    passwd = request.POST['passwd']
       
    if passwd == '88888888':
        response .set_cookie("account", 'admin')
        redirect('/upload')
    else:
        return 'wrong! go back & retry!'

@get('/upload')
def upload():
    usr = request.get_cookie("account")
    if usr:
        return upload_page
    else:
        redirect('/')

@get('/logout')
def logout():
    response.delete_cookie("account")
    redirect('/')

@post('/upload')
def do_upload():
    usr = request.get_cookie("account")
    if usr:
        upload = request.files.get('upload')
        name, ext = os.path.splitext(upload.filename)
        if ext not in ('.tgz','.gz'):
            return 'You give a wrong file. Retry!'
        
        save_path = "/opt/myapp/update.tar.gz"
        with open(save_path, 'w') as open_file:
            open_file.write(upload.file.read())

        return '''
        <b>Done! Please re-power the machine to fill the update! </b>
        <a href="/logout" title="logout">logout</a>
        '''
    else:
        redirect('/')

run(host='192.168.1.230', port=80)