我正在尝试使用此命令获取SSl证书信息:
openssl s_client -connect gcm-http.googleapis.com:443
将返回SSL证书信息。我正在尝试grep -P
,但却无法弄清楚1)正确的正则表达式,以及2)如何实际让Grep返回。到目前为止,带有以下正则表达式的grep命令不返回任何内容。
以下是我正在操作的信息:
(More unrelated data - Truncated)
---
Certificate chain
0 s:/C=US/ST=California/L=Mountain View/O=Google Inc/CN=*.googleapis.com
i:/C=US/O=Google Inc/CN=Google Internet Authority G2
1 s:/C=US/O=Google Inc/CN=Google Internet Authority G2
i:/C=US/O=GeoTrust Inc./CN=GeoTrust Global CA
2 s:/C=US/O=GeoTrust Inc./CN=GeoTrust Global CA
i:/C=US/O=Equifax/OU=Equifax Secure Certificate Authority
---
Server certificate
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
....
(More unrelated data - Truncated)
我已尝试过这两种正则表达式:
grep -P '((?:-+BEGIN CERTIFICATE-+\n)(.+\n)*(?:-+END CERTIFICATE-+))'
grep -P '(?:-+BEGIN CERTIFICATE-+\n)(.+\n)(?:-+END CERTIFICATE-+)'
基本上,我只想返回证书本身,而不是----BEGIN CERTIFICATE----
和-----END CERTIFICATE-----
我知道可能有更好的方法来制作正则表达式,但我已经在regexr.com
和regex101.com
如果Grep成功捕获它,那么echo $1
正在返回任何内容。
答案 0 :(得分:6)
我没有设法使用grep
,但有一个Perl解决方案:
perl -0777 -n -e \
'print $1 if /-+BEGIN CERTIFICATE-+\n(.+\n)*-+END CERTIFICATE-+/s' \
cert.txt
这将在第一个“BEGIN ...”和最后一个“END ...”之间打印所有。
<强>更新强>:
@brian d foy写了关于“独占触发器操作符”的an article。根据那篇文章,这也有效:
perl -n -e \
'print if ($rc = /-+BEGIN CERTIFICATE/ .. /-+END CERTIFICATE-+/ and $rc !~ /(^1|E0)$/)' cert.txt
答案 1 :(得分:6)
仅供记录,这里只提取证书的grep
命令:
grep -zoPe '--BEGIN.*\n\K[^-]+' file | head -c-1
诀窍是使用-z
/ --null-data
选项(输入行以\0
终止,而不是换行符)。我们还使用PCRE和PCRE的特殊转义序列the reset match start \K
,这会使任何先前匹配的字符不包含在最终匹配序列中(我们只需要--BEGIN...\n
之后和{{}之前的部分{1}})。
-...
将移除最后一个字符,即旧版head -c-1
的换行符(例如GNU grep
v2.12)和< em> null byte 用于较新的grep
s(例如GNU grep
v2.25)。
答案 2 :(得分:1)
使用sed
:
sed -n '/----BEGIN CERTIFICATE-----/,/----END CERTIFICATE-----/ p' inputfile |
sed '1d;$d'
编辑: 错过&#34;证书&#34;
或者使用awk:
awk '/----END CERTIFICATE-----/ {pr=0;}
pr==1 {print}
/----BEGIN CERTIFICATE-----/ {pr=1;}' inputfile