【问题标题】:What is the format of email header "name <email>"?电子邮件标题“name <email>”的格式是什么?
【发布时间】:2011-02-07 12:47:19
【问题描述】:

官方格式是什么

name <email>

在电子邮件标题中?我需要先验证用户输入,然后再将其粘贴到我的标题中。

另外,你碰巧知道好的正则表达式来验证这种形式的姓名+电子邮件对吗?

【问题讨论】:

    标签: email email-validation


    【解决方案1】:

    Enjoy.

    在stackoverflow中搜索正则表达式来解析电子邮件地址,你很快就会发现它是徒劳的。

    您可能应该只做一些基本的健全性检查,并实际尝试通过电子邮件发送姓名、地址对作为检查电子邮件是否有效的主要方式。

    【讨论】:

    • ... 这只是电子邮件地址的官方格式。标头更复杂,因为它的值不是“单个电子邮件地址”
    • 我不在乎电子邮件是否像“向它发送电子邮件”那样有效,但我希望它不会导致标头注入攻击。
    • 这不是你问的。如果您正在寻找标头注入攻击,那么只需确保没有换行符或冒号。
    【解决方案2】:

    见http://www.ex-parrot.com/~pdw/Mail-RFC822-Address.html 和RFC822。电子邮件格式有些复杂;)

    与 Perl 兼容的电子邮件地址正则表达式是:

    (?:(?:\r\n)?[ \t])*(?:(?:(?:[^()<>@,;:\\".\[\] \000-\031]+(?:(?:(?:\r\n)?[ \t]
    )+|\Z|(?=[\["()<>@,;:\\".\[\]]))|"(?:[^\"\r\\]|\\.|(?:(?:\r\n)?[ \t]))*"(?:(?:
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    (?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\\".\[\]]))|\[([^\[\]\r\\]|\\.)*\](?:
    (?:\r\n)?[ \t])*))*|(?:[^()<>@,;:\\".\[\] \000-\031]+(?:(?:(?:\r\n)?[ \t])+|\Z
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    +|\Z|(?=[\["()<>@,;:\\".\[\]]))|\[([^\[\]\r\\]|\\.)*\](?:(?:\r\n)?[ \t])*)(?:\
    .(?:(?:\r\n)?[ \t])*(?:[^()<>@,;:\\".\[\] \000-\031]+(?:(?:(?:\r\n)?[ \t])+|\Z
    |(?=[\["()<>@,;:\\".\[\]]))|\[([^\[\]\r\\]|\\.)*\](?:(?:\r\n)?[ \t])*))*\>(?:(
    ?:\r\n)?[ \t])*))*)?;\s*)
    

    【讨论】:

    • 实际上不知道,但至少有 2 个开源框架使用它。
    • 我看了一会儿Matrix。
    • 我向坐在一起并花时间制作 RegEx 的人致敬。天哪,那是一些代码诗还是什么?
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