phpGACL汉语手册(九)扩展权限对象
phpGACL中文手册(九)扩展权限对象
扩展权限对象
在 phpGACL 中可以通过配置扩展权限对象( AXO 对象)为第三方添加权限。我们已经知道了 phpGACL 是如何将 ARO 对象和 ACO 对象组成一个访问控制策略指令的,这主要用于简单的权限要求如:
Luke ( ARO 对象)要求访问"武器室"( ACO 对象)的权限
如果这是你所需要的,那么 AXO 对象就完全是可选的了!
但是由于所有的 ACO 对象都是相同的,因此如果它们存在很多的话那管理起来将是困难的。如果是这样情况的话,我们可以通过改变思考权限对象方式来使其管理起来更加容易。
AXO 对象在许多方面同 ARO 对象是一样的。这有一个 AXO 树(是从 ARO 树中分离出来的)有着自己的组和 AXO 对象。在处理 AXO 对象时,以看待 ACO 对象的方式来看待 AXO 对象(即"需要权限控制的事物"),而改变看待 ACO 对象的方式,从"需要权限控制的事物"变成"被要求的运作"。
看待只有 ARO 和 ACO 对象的方式:
- ARO 对象:要求权限的事物
- ACO 对象:需要权限控制的事物
看待 ARO 、 ACO 和 AXO 对象的方式:
- ARO 对象:要求权限的事物
- ACO 对象:被要求的动作
- AXO 对象:需要权限控制的事物
例如:
一个网站管理员想要管理访问该网站中项目的权限。一个由所有用户组成的
ARO
树如下所示:
Website
(网站)
├─Administrators
(管理者)
│ ├─Alice
│ └─Carol
└─Users
(用户)
├─Bob
└─Alan
在
AXO
树中通过操作系统分类项目被组织成:
Projects
(项目)
├─Linux
│ ├─SpamFilter2
│ └─AutoLinusWorshipper
└─Windows
├─PaperclipKiller
└─PopupStopper
对于每个项目而言,动作是"观看"和"编辑"。这些是 ACO 对象。
现在我们想要 Bob 对所有的 Linux 项目有"观看"的权限,因此可以添加一个 ADP 将 Bob 的 ARO 对象与观看的 ACO 对象和 Linux 的 AXO 对象连接在一起。于是我们可以问一个问题:
Bob ( ARO 对象)要求对一个叫 Linux 的项目( AXO 对象)有"观看"( ACO 对象)的权限
记住 AXO 是可选的,如果你在调用 acl_check() 函数时没有指明 AXO 对象或匹配到一个没有 AXO 对象的 ADP ,这是允许的。然而如果只有 AXO 对象的 APD 而你却调用没有 AXO 对象的 acl_check() 函数,那么系统将失败。
所以一旦你在调用 acl_check() 函数时指定了 AXO 对象的话, acl_check() 函数就只搜索含有 AXO 对象的 ACL 列表。如果 AXO 对象没有被指定,那么只有不含有 AXO 对象的列表才会被搜索。基于上述理论也使系统在性能上有所提升。

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

VS Code system requirements: Operating system: Windows 10 and above, macOS 10.12 and above, Linux distribution processor: minimum 1.6 GHz, recommended 2.0 GHz and above memory: minimum 512 MB, recommended 4 GB and above storage space: minimum 250 MB, recommended 1 GB and above other requirements: stable network connection, Xorg/Wayland (Linux)

The reasons for the installation of VS Code extensions may be: network instability, insufficient permissions, system compatibility issues, VS Code version is too old, antivirus software or firewall interference. By checking network connections, permissions, log files, updating VS Code, disabling security software, and restarting VS Code or computers, you can gradually troubleshoot and resolve issues.

Although Notepad cannot run Java code directly, it can be achieved by using other tools: using the command line compiler (javac) to generate a bytecode file (filename.class). Use the Java interpreter (java) to interpret bytecode, execute the code, and output the result.

VS Code is the full name Visual Studio Code, which is a free and open source cross-platform code editor and development environment developed by Microsoft. It supports a wide range of programming languages and provides syntax highlighting, code automatic completion, code snippets and smart prompts to improve development efficiency. Through a rich extension ecosystem, users can add extensions to specific needs and languages, such as debuggers, code formatting tools, and Git integrations. VS Code also includes an intuitive debugger that helps quickly find and resolve bugs in your code.

VS Code is available on Mac. It has powerful extensions, Git integration, terminal and debugger, and also offers a wealth of setup options. However, for particularly large projects or highly professional development, VS Code may have performance or functional limitations.

Visual Studio Code (VSCode) is a cross-platform, open source and free code editor developed by Microsoft. It is known for its lightweight, scalability and support for a wide range of programming languages. To install VSCode, please visit the official website to download and run the installer. When using VSCode, you can create new projects, edit code, debug code, navigate projects, expand VSCode, and manage settings. VSCode is available for Windows, macOS, and Linux, supports multiple programming languages and provides various extensions through Marketplace. Its advantages include lightweight, scalability, extensive language support, rich features and version

The main uses of Linux include: 1. Server operating system, 2. Embedded system, 3. Desktop operating system, 4. Development and testing environment. Linux excels in these areas, providing stability, security and efficient development tools.

To view the Git repository address, perform the following steps: 1. Open the command line and navigate to the repository directory; 2. Run the "git remote -v" command; 3. View the repository name in the output and its corresponding address.
