CSP: script-src-elem

HTTP协议中 Content-Security-Policy (CSP) script-src-elem 指示符明指定了合法的js要素来源 <script> ,但是不包括类似onclick这样的事件处理器中包含的内联脚本。

CSP 版本 3
Directive type Fetch directive
default-src fallback Yes. If this directive is absent, the user agent will look for the script-src (en-US) directive, and if both of them are absent, fallback to default-src directive.

语法

 script-src-elem 可以允许多个来源:

Content-Security-Policy: script-src-elem <source>;
Content-Security-Policy: script-src-elem <source> <source>;

script-src-elem 可以跟 script-src (en-US)一起用:

Content-Security-Policy: script-src <source>;
Content-Security-Policy: script-src-elem <source>;

Sources

<source> can be any one of the values listed in CSP Source Values.

Note that this same set of values can be used in all fetch directives (and a number of other directives).

范例

回退到 script-src

如果没有 script-src-elem 存在, 客户端会回退到 script-src (en-US) 指示符, 如果那个也还是没有那就回退到 default-src

细则

Specification Status Comment
Content Security Policy Level 3
script-src-elem
Working Draft Initial definition.

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其他的链接