KindEditor使用

官网地址:http://kindeditor.net/demo.php

下载地址:

  • 官网下载:http://kindeditor.net/down.php
  • 本地下载:http://files.cnblogs.com/files/wupeiqi/kindeditor_a5.zip

什么是KindEdtor?

KindEditor是一套开源的HTML可视化编辑器,主要用于让用户在网站上获得所见即所得编辑效果,兼容IE,Firefox,Chrome,Safari,Opera等主流浏览器。

当我们下载后解压后会发现,里面存在很多文件夹,那么这些文件夹有什么意义?

文件夹

├── asp                          asp示例
├── asp.net                    asp.net示例
├── attached                  空文件夹,放置关联文件attached
├── examples                 HTML示例
├── jsp                          java示例
├── kindeditor-all-min.js 全部JS(压缩)
├── kindeditor-all.js        全部JS(未压缩)
├── kindeditor-min.js      仅KindEditor JS(压缩)
├── kindeditor.js            仅KindEditor JS(未压缩)
├── lang                        支持语言
├── license.txt               License
├── php                        PHP示例
├── plugins                    KindEditor内部使用的插件
└── themes                   KindEditor主题

下面举个简单的例子来看看KindEditor的简单使用

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

<h1>提交的文章内容</h1>
<div class="article"></div>

<h1>请输入内容</h1>
<div class="edit">
    <textarea name="content"></textarea>
</div>

<script src="/static/js/jquery-1.12.4.js"></script>
<script src="/static/plugins/kindeditor/kindeditor-all.js"></script>

<script>
    $(function () {
        KindEditor.create('textarea[name="content"])',{
            allowImageUpload: true,
            allowImageRemote: true,
            allowFlashUpload: false,
            allowFileManager:true,
            filePostName: 'fafafa',
            extraFileUploadParams : {
                        csrfmiddlewaretoken : "{{ csrf_token }}"
                },
            uploadJson:'/upload_file.html',
            fileManagerJson:'/manager_file.html'

        })
    })
</script>
</body>
</html>

这里我们需要注意的是在JS代码中,{allowImageUpload:true}表示参数,具体详细参数的使用方法详见 http://kindeditor.net/docs/option.html

在众多参数中,大部分都是起到在前端装饰的作用,而以下4个参数可以与后端交互UploadJson,fileManageJson,extraFileUploadParams,filePostName

以其中两个为例简单介绍以下上传文件

上传文件

前端代码如下

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

<h1>提交的文章内容</h1>
<div class="article"></div>

<h1>请输入内容</h1>
<div class="edit">
    <textarea name="content"></textarea>
</div>

<script src="/static/js/jquery-1.12.4.js"></script>
<script src="/static/plugins/kindeditor/kindeditor-all.js"></script>

<script>
    $(function () {
        KindEditor.create('textarea[name="content"])',{
            allowImageUpload: true,
            allowImageRemote: true,
            allowFlashUpload: false,
            allowFileManager:true,
            filePostName: 'fafafa',
            extraFileUploadParams : {
                        csrfmiddlewaretoken : "{{ csrf_token }}"
                },
            uploadJson:'/upload_file.html',
            fileManagerJson:'/manager_file.html'

        })
    })
</script>
</body>
</html>
HTML代码
 1 def upload_file(request):
 2     import os
 3     import json
 4     dir = request.GET.get('dir')
 5     if dir == 'image':
 6         pass
 7     obj = request.FILES.get('fafafa')
 8     file_path = os.path.join('static/imgs', obj.name)
 9     with open(file_path, 'wb') as f:
10         for chunk in obj.chunks():
11             f.write(chunk)
12     ret = {
13         'error': 0,
14         'url': 'http://127.0.0.1:8000/' + file_path,
15         'message': '错误了...'
16     }
17     return HttpResponse(json.dumps(ret))
文件上传
def manager_file(request):
    import os
    import time
    import json
    from EdmureBlog.settings import BASE_DIR

    dic = {}
    root_path = os.path.join(BASE_DIR, 'static/')
    static_root_path = '/static/'

    # 要访问的路径
    request_path = request.GET.get('path')
    # 如果是根目录,则为空
    print(request_path, '++++++++++++++')

    if request_path:

        abs_current_dir_path = os.path.join(root_path, request_path)
        # request_path=css/    ""
        # move_up_dir_path=css
        #
        move_up_dir_path = os.path.dirname(request_path.rstrip('/'))
        dic['moveup_dir_path'] = move_up_dir_path + '/' if move_up_dir_path else move_up_dir_path

    else:
        # 根目录无上一级
        abs_current_dir_path = root_path
        dic['moveup_dir_path'] = ''

    dic['current_dir_path'] = request_path
    dic['current_url'] = os.path.join(static_root_path, request_path)

    file_list = []
    print(os.listdir(abs_current_dir_path))
    for item in os.listdir(abs_current_dir_path):
        # item每一个文件名
        abs_item_path = os.path.join(abs_current_dir_path, item)
        a, exts = os.path.splitext(item)
        is_dir = os.path.isdir(abs_item_path) # 得到的是bool值,有为True,没有我False
        print('is_dir', is_dir)
        if is_dir:
            temp = {
                'is_dir': True,
                'has_file': True,
                'filesize': 0,
                'dir_path': '',
                'is_photo': False,
                'filetype': '',
                'filename': item,
                'datetime': time.strftime('%Y-%m-%d %H:%M:%S', time.gmtime(os.path.getctime(abs_item_path)))
            }
        else:
            temp = {
                'is_dir': False,
                'has_file': False,
                'filesize': os.stat(abs_item_path).st_size,
                'dir_path': '',
                'is_photo': True if exts.lower() in ['.jpg', '.png', '.jpeg'] else False,
                'filetype': exts.lower().strip('.'),
                'filename': item,
                'datetime': time.strftime('%Y-%m-%d %H:%M:%S', time.gmtime(os.path.getctime(abs_item_path)))
            }

        file_list.append(temp)
    dic['file_list'] = file_list
    return HttpResponse(json.dumps(dic))
文件管理

这虽然我们提供了便捷,但懂技术的人使用时,利用JS代码攻击你写的内容,比如在你发布的博客中评论添加<script>alert(OK)</script>,这样会导致在别人访问你的博客时,每次刷新都会弹出OK,这就是所谓的XSS攻击,当然我们也有办法解决它。

XSS攻击解决方法

解决的原理很简单,就是我们先定义一份白名单,就是允许的HTML标签存在后台,这样我们在访问时,首先遍历出提交到后台的HTML标签与白名单进行匹配,讲不存在白名单中的HTML标签取出,删除内容或者删除标签即可

首先我们在遍历HTML标签时需要安装beautifulsoup4

pip3 install beautifulsoup4

from bs4 import BeautifulSoup


class XSSFilter(object):
    __instance = None

    def __init__(self):
        # XSS白名单
        self.valid_tags = {
            "font": ['color', 'size', 'face', 'style'],
            'b': [],
            'div': [],
            "span": [],
            "table": [
                'border', 'cellspacing', 'cellpadding'
            ],
            'th': [
                'colspan', 'rowspan'
            ],
            'td': [
                'colspan', 'rowspan'
            ],
            "a": ['href', 'target', 'name'],
            "img": ['src', 'alt', 'title'],
            'p': [
                'align'
            ],
            "pre": ['class'],
            "hr": ['class'],
            'strong': []
        }

    @classmethod
    def instance(cls):
        if not cls.__instance:
            obj = cls()
            cls.__instance = obj
        return cls.__instance

    def process(self, content):
        soup = BeautifulSoup(content, 'lxml')
        # 遍历所有HTML标签
        for tag in soup.find_all(recursive=True):
            # 判断标签名是否在白名单中
            if tag.name not in self.valid_tags:
                tag.hidden = True
                if tag.name not in ['html', 'body']:
                    tag.hidden = True
                    tag.clear()
                continue
            # 当前标签的所有属性白名单
            attr_rules = self.valid_tags[tag.name]
            keys = list(tag.attrs.keys())
            for key in keys:
                if key not in attr_rules:
                    del tag[key]

        return soup.renderContents()


if __name__ == '__main__':
    html = """<p class="title">
                        <b>The Dormouse's story</b>
                    </p>
                    <p class="story">
                        <div name='root'>
                            Once upon a time there were three little sisters; and their names were
                            <a href="http://example.com/elsie" class="sister c1" style='color:red;background-color:green;' id="link1"><!-- Elsie --></a>
                            <a href="http://example.com/lacie" class="sister" id="link2">Lacie</a> and
                            <a href="http://example.com/tillie" class="sister" id="link3">Tilffffffffffffflie</a>;
                            and they lived at the bottom of a well.
                            <script>alert(OK)</script>
                        </div>
                    </p>
                    <p class="story">...</p>"""

    v = XSSFilter.instance().process(html)
    print(v)
XSS简单示例

在上面的例子中,我们会发现每当有用户访问时,都会创建一个对象,而且每个对象都是一样的,这样用户访问量多了,就会增加内存的使用量,所以这是没有必要的。在我们了解到的类方法中,有一种单例模式就很好的解决了这一问题,不管多少个用户访问,只会创建一个对象,而且后面的用户访问都会使用这一对象。

from bs4 import BeautifulSoup


class XSSFilter(object):
    __instance = None

    def __init__(self):
        # XSS白名单
        self.valid_tags = {
            "font": ['color', 'size', 'face', 'style'],
            'b': [],
            'div': [],
            "span": [],
            "table": [
                'border', 'cellspacing', 'cellpadding'
            ],
            'th': [
                'colspan', 'rowspan'
            ],
            'td': [
                'colspan', 'rowspan'
            ],
            "a": ['href', 'target', 'name'],
            "img": ['src', 'alt', 'title'],
            'p': [
                'align'
            ],
            "pre": ['class'],
            "hr": ['class'],
            'strong': []
        }

    def __new__(cls, *args, **kwargs):
        """
        单例模式
        :param cls:
        :param args:
        :param kwargs:
        :return:
        """
        if not cls.__instance:
            obj = object.__new__(cls, *args, **kwargs)
            cls.__instance = obj
        return cls.__instance

    def process(self, content):
        soup = BeautifulSoup(content, 'lxml')
        # 遍历所有HTML标签
        for tag in soup.find_all(recursive=True):
            # 判断标签名是否在白名单中
            if tag.name not in self.valid_tags:
                tag.hidden = True
                if tag.name not in ['html', 'body']:
                    tag.hidden = True
                    tag.clear()
                continue
            # 当前标签的所有属性白名单
            attr_rules = self.valid_tags[tag.name]
            keys = list(tag.attrs.keys())
            for key in keys:
                if key not in attr_rules:
                    del tag[key]

        return soup.renderContents()


if __name__ == '__main__':
    html = """<p class="title">
                        <b>The Dormouse's story</b>
                    </p>
                    <p class="story">
                        <div name='root'>
                            Once upon a time there were three little sisters; and their names were
                            <a href="http://example.com/elsie" class="sister c1" style='color:red;background-color:green;' id="link1"><!-- Elsie --></a>
                            <a href="http://example.com/lacie" class="sister" id="link2">Lacie</a> and
                            <a href="http://example.com/tillie" class="sister" id="link3">Tilffffffffffffflie</a>;
                            and they lived at the bottom of a well.
                            <script>alert(OK)</script>
                        </div>
                    </p>
                    <p class="story">...</p>"""

    obj = XSSFilter()
    v = obj.process(html)
    print(v)
基于单例模式的XSS攻击

  

 

原文地址:https://www.cnblogs.com/flash55/p/6391360.html