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150 lines
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150 lines
5.7 KiB
Markdown
[#]: collector: (lujun9972)
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[#]: translator: (lujun9972)
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[#]: reviewer: (wxy)
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[#]: publisher: (wxy)
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[#]: url: (https://linux.cn/article-10582-1.html)
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[#]: subject: (Use Emacs to create OAuth 2.0 UML sequence diagrams)
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[#]: via: (https://www.onwebsecurity.com/configuration/use-emacs-to-create-oauth-2-0-uml-sequence-diagrams.html)
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[#]: author: (Peter Mosmans https://www.onwebsecurity.com)
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使用 Emacs 创建 OAuth 2.0 的 UML 序列图
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======
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![OAuth 2.0 abstract protocol flow][6]
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看起来 [OAuth 2.0 框架][7] 已经越来越广泛地应用于 web (和 移动) 应用。太棒了!
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虽然协议本身并不复杂,但有很多的使用场景、流程和实现可供选择。正如生活中的大多数事物一样,魔鬼在于细节之中。
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在审查 OAuth 2.0 实现或编写渗透测试报告时我习惯画出 UML 图。这方便让人理解发生了什么事情,并发现潜在的问题。毕竟,一图抵千言。
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使用基于 GPL 开源协议 [Emacs][8] 编辑器来实现,再加上基于 GPL 开源协议的工具 [PlantUML][9] (也可以选择基于 Eclipse Public 协议的 [Graphviz][10]) 很容易做到这一点。
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Emacs 是世界上最万能的编辑器。在这种场景中,我们用它来编辑文本,并自动将文本转换成图片。PlantUML 是一个允许你用人类可读的文本来写 UML 并完成该转换的工具。Graphviz 是一个可视化的软件,这里我们可以用它来显示图片。
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下载 [预先编译好了的 PlantUML jar 文件 ][11],[Emacs][12] 还可以选择下载并安装 [Graphviz][13]。
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安装并启动 Emacs,然后将下面 Lisp 代码(实际上是配置)写入你的启动文件中(`~/.emacs.d/init.d`),这段代码将会:
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* 配置 org 模式(一种用来组织并编辑文本文件的模式)来使用 PlantUML
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* 将 `plantuml` 添加到可识别的 “org-babel” 语言中(这让你可以在文本文件中执行源代码)
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* 将 PlantUML 代码标注为安全的,从而允许执行
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* 自动显示生成的结果图片
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```elisp
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;; tell org-mode where to find the plantuml JAR file (specify the JAR file)
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(setq org-plantuml-jar-path (expand-file-name "~/plantuml.jar"))
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;; use plantuml as org-babel language
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(org-babel-do-load-languages 'org-babel-load-languages '((plantuml . t)))
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;; helper function
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(defun my-org-confirm-babel-evaluate (lang body)
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"Do not ask for confirmation to evaluate code for specified languages."
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(member lang '("plantuml")))
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;; trust certain code as being safe
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(setq org-confirm-babel-evaluate 'my-org-confirm-babel-evaluate)
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;; automatically show the resulting image
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(add-hook 'org-babel-after-execute-hook 'org-display-inline-images)
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```
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如果你还没有启动文件,那么将该代码加入到 `~/.emacs.d/init.el` 文件中然后重启 Emacs。
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提示:`Control-c Control-f` 可以让你创建/打开(新)文件。`Control-x Control-s` 保存文件,而 `Control-x Control-c` 退出 Emacs。
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这就结了!
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要测试该配置,可以创建/打开(`Control-c Control-f`)后缀为 `.org` 的文件,例如 `test.org`。这会让 Emacs 切换到 org 模式并识别 “org-babel” 语法。
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输入下面代码,然后在代码中输入 `Control-c Control-c` 来测试是否安装正常:
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```
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#+BEGIN_SRC plantuml :file test.png
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@startuml
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version
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@enduml
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#+END_SRC
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```
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一切顺利的话,你会在 Emacs 中看到文本下面显示了一张图片。
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> **注意:**
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> 要快速插入类似 `#+BEGIN_SRC` 和 `#+END_SRC` 这样的代码片段,你可以使用内置的 Easy Templates 系统:输入 `<s` 然后按下 `TAB`,它就会自动为你插入模板。
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还有更复杂的例子,下面是生成上面图片的 UML 源代码:
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```
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#+BEGIN_SRC plantuml :file t:/oauth2-abstract-protocol-flow.png
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@startuml
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hide footbox
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title Oauth 2.0 Abstract protocol flow
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autonumber
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actor user as "resource owner (user)"
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box "token stays secure" #FAFAFA
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participant client as "client (application)"
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participant authorization as "authorization server"
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database resource as "resource server"
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end box
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group user authorizes client
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client -> user : request authorization
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note left
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**grant types**:
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# authorization code
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# implicit
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# password
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# client_credentials
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end note
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user --> client : authorization grant
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end
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group token is generated
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client -> authorization : request token\npresent authorization grant
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authorization --> client :var: access token
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note left
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**response types**:
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# code
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# token
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end note
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end group
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group resource can be accessed
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client -> resource : request resource\npresent token
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resource --> client : resource
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end group
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@enduml
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#+END_SRC
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```
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你难道会不喜欢 Emacs 和开源工具的多功能性吗?
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--------------------------------------------------------------------------------
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via: https://www.onwebsecurity.com/configuration/use-emacs-to-create-oauth-2-0-uml-sequence-diagrams.html
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作者:[Peter Mosmans][a]
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选题:[lujun9972][b]
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译者:[lujun9972](https://github.com/lujun9972)
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校对:[wxy](https://github.com/wxy)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译,[Linux中国](https://linux.cn/) 荣誉推出
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[a]: https://www.onwebsecurity.com
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[b]: https://github.com/lujun9972
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[1]: https://www.onwebsecurity.com/category/configuration.html
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[2]: https://www.onwebsecurity.com/tag/emacs.html
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[3]: https://www.onwebsecurity.com/tag/oauth2.html
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[4]: https://www.onwebsecurity.com/tag/pentesting.html
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[5]: https://www.onwebsecurity.com/tag/security.html
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[6]: https://www.onwebsecurity.com/images/oauth2-abstract-protocol-flow.png
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[7]: https://tools.ietf.org/html/rfc6749
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[8]: https://www.gnu.org/software/emacs/
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[9]: https://plantuml.com
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[10]: http://www.graphviz.org/
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[11]: http://plantuml.com/download
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[12]: https://www.gnu.org/software/emacs/download.html
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[13]: http://www.graphviz.org/Download.php
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