如何将 nginx 配置拆分为多行？

Question

特别是在配置HPKP标头（或其他一般的长标头）时，将 nginx 配置中的一行拆分为多行会很有用。

这是想要的结果：

pin-sha256="X3pGTSOuJeEVw989IJ/cEtXUEmy52zs1TZQrU06KUKg=";
pin-sha256="MHJYVThihUrJcxW6wcqyOISTXIsInsdj3xK8QrZbHec="; 
pin-sha256="isi41AizREkLvvft0IRW4u3XMFR2Yg7bvrF7padyCJg="; 
pin-sha256="I/bAACUzdYEFNw2ZKRaypOyYvvOtqBzg21g9a5WVClg="; 
pin-sha256="Y4/Gxyck5JLLnC/zWHtSHfNljuMbOJi6dRQuRJTgYdo="; 
pin-sha256="/oCVQg3nP3DroGpFdAbaiYzenycUftqrH3LAyaIal2g=";

但是对于浏览器，它应该只有一行：

pin-sha256="X3pGTSOuJeEVw989IJ/cEtXUEmy52zs1TZQrU06KUKg="; pin-sha256="MHJYVThihUrJcxW6wcqyOISTXIsInsdj3xK8QrZbHec="; pin-sha256="isi41AizREkLvvft0IRW4u3XMFR2Yg7bvrF7padyCJg="; pin-sha256="I/bAACUzdYEFNw2ZKRaypOyYvvOtqBzg21g9a5WVClg="; pin-sha256="Y4/Gxyck5JLLnC/zWHtSHfNljuMbOJi6dRQuRJTgYdo="; pin-sha256="/oCVQg3nP3DroGpFdAbaiYzenycUftqrH3LAyaIal2g=";

所以我尝试了一些东西，但我对结果不满意......

第一次尝试：将其拆分

add_header Public-Key-Pins '
pin-sha256="X3pGTSOuJeEVw989IJ/cEtXUEmy52zs1TZQrU06KUKg=";
pin-sha256="MHJYVThihUrJcxW6wcqyOISTXIsInsdj3xK8QrZbHec=";
pin-sha256="isi41AizREkLvvft0IRW4u3XMFR2Yg7bvrF7padyCJg=";
pin-sha256="I/bAACUzdYEFNw2ZKRaypOyYvvOtqBzg21g9a5WVClg=";
pin-sha256="Y4/Gxyck5JLLnC/zWHtSHfNljuMbOJi6dRQuRJTgYdo=";
pin-sha256="/oCVQg3nP3DroGpFdAbaiYzenycUftqrH3LAyaIal2g=";
'

这有效，但curl我可以看到浏览器收到带有所有换行符的标题......

第二次尝试：反斜杠

实际上，在已经链接的文章中，Scott Helme 建议这样做：

add_header Public-Key-Pins ' \
pin-sha256="X3pGTSOuJeEVw989IJ/cEtXUEmy52zs1TZQrU06KUKg="; \
pin-sha256="MHJYVThihUrJcxW6wcqyOISTXIsInsdj3xK8QrZbHec="; \
pin-sha256="isi41AizREkLvvft0IRW4u3XMFR2Yg7bvrF7padyCJg="; \
pin-sha256="I/bAACUzdYEFNw2ZKRaypOyYvvOtqBzg21g9a5WVClg="; \
pin-sha256="Y4/Gxyck5JLLnC/zWHtSHfNljuMbOJi6dRQuRJTgYdo="; \
pin-sha256="/oCVQg3nP3DroGpFdAbaiYzenycUftqrH3LAyaIal2g="; \
'

但是在我的情况下，这只是添加了斜杠并将它们返回给浏览器，所以这不起作用。

那么我该怎么做呢？

奖金

当然，每一行的注释都是一个很棒的补充：

pin-sha256="X3pGTSOuJeEVw989IJ/cEtXUEmy52zs1TZQrU06KUKg="; # current ECDSA
pin-sha256="MHJYVThihUrJcxW6wcqyOISTXIsInsdj3xK8QrZbHec="; # current RSA (nginx 1.11.0)
pin-sha256="isi41AizREkLvvft0IRW4u3XMFR2Yg7bvrF7padyCJg="; # backup ECDSA 1
pin-sha256="I/bAACUzdYEFNw2ZKRaypOyYvvOtqBzg21g9a5WVClg="; # backup ECDSA 2
pin-sha256="Y4/Gxyck5JLLnC/zWHtSHfNljuMbOJi6dRQuRJTgYdo="; # backup RSA 1
pin-sha256="/oCVQg3nP3DroGpFdAbaiYzenycUftqrH3LAyaIal2g="; # backup RSA 2

Answer 1

您可能需要考虑如下所示的变量嵌套：

set $PKP '';
set $PKP '${PKP}pin-sha256="X3pGTSOuJeEVw989IJ/cEtXUEmy52zs1TZQrU06KUKg=";'; # current ECDSA
set $PKP '${PKP}pin-sha256="MHJYVThihUrJcxW6wcqyOISTXIsInsdj3xK8QrZbHec=";'; # current RSA (nginx 1.11.0)
set $PKP '${PKP}pin-sha256="isi41AizREkLvvft0IRW4u3XMFR2Yg7bvrF7padyCJg=";';  # Backup ECDSA 1
set $PKP '${PKP}pin-sha256="I/bAACUzdYEFNw2ZKRaypOyYvvOtqBzg21g9a5WVClg=";';  # Backup ECDSA 2
set $PKP '${PKP}pin-sha256="Y4/Gxyck5JLLnC/zWHtSHfNljuMbOJi6dRQuRJTgYdo=";'; # backup RSA 1
set $PKP '${PKP}pin-sha256="/oCVQg3nP3DroGpFdAbaiYzenycUftqrH3LAyaIal2g=";';  # Backup RSA 2

add_header Public-Key-Pins $PKP;