将 PEM 文件解析为对象

Question

我有一个包含一些证书的 PEM 文件。我想将它们解析为一个对象，该对象具有 sha_hash、pem 和过期变量。

我已经创建了对象并且它可以工作。我创建了一个对象列表。我遇到的问题是解析。请参阅下面的完整代码。问题是假设我点击了 SHA 或 BEGIN 或 END 案例..它将行添加到对象..但随后它点击了其他案例..并再次添加它。

一旦它完成其中一个 if 语句，我想做的是转到下一行！

class Certificate(object):
    """A class for parsing and storing information about
    certificates:"""

    def __init__(self, sha_hash="", pem="", expiration=""):
        super(Certificate, self).__init__()
        self.sha_hash = sha_hash
        self.pem = pem
        self.expiration = expiration


def main():
    cert_file = '/Users/ludeth/Desktop/testCerts.pem'
    myList = []
    cert = Certificate()

    with open(cert_file, 'r') as myFile:
        cert = Certificate()
        for line in myFile:
            if "SHA" in line:
                cert.sha_hash = line
            if "BEGIN" in line:
                cert.pem = cert.pem + line
            if "END" in line:
                cert.pem = cert.pem + line
                myList.append(cert)
                break
            else:
                cert.pem = cert.pem + line

if __name__ == '__main__':
    main()

Answer 1

这是因为您有多个 if 和最后一个 if/else。如果你想始终完全匹配这些条件之一，你可以改为

if "SHA" in line:
    cert.sha_hash = line
elif "BEGIN" in line:
    cert.pem = cert.pem + line
elif "END" in line:
    cert.pem = cert.pem + line
    myList.append(cert)
    break
else:
    cert.pem = cert.pem + line

将 PEM 文件解析为对象

Parsing PEM file into Object

python

parsing

pem