c - 使用自定义 openssl 二进制文件构建 OpenVPN(无源)

Question

我看过有关使用自定义 OpenSSL 版本编译 OpenVPN 的帖子。我尝试了它们，它们与最新版本的 OpenVPN-2.3.11 和 OpenSSL 1.0.2h 完美配合。然而，在所有这些情况下，OpenSSL 的源代码都是可用的。

我的问题是，如果我没有任何 OpenSSL 源并且只有一些自定义 OpenSSL 的预编译二进制文件怎么办。我怎样才能用这样的二进制文件编译 OpenVPN。抱歉，如果这个问题已被多次回答 - 我只是找不到我的问题的任何答案。

Answer 1

My question is what if I don't have any sources of OpenSSL and only precompiled binaries of some customized OpenSSL. How can I compile OpenVPN with such binaries.

您不能针对 [私有(private)] OpenSSL 构建 OpenVPN，因为您需要 OpenSSL 头文件。

您可能能够使用strings 确定[私有(private)] OpenSSL 库的版本，然后从OpenSSL download page 上的OpenSSL 包中获取 header 。 (如果需要，请务必访问 /source/old)。下面是从源构建并在本地安装的 OpenSSL 1.0.2 的示例。

如果您尝试复制缺少的头文件，请务必运行 ./config 以生成 openssl/opensslconf.h 和 openssl/bn。 h.

尝试复制丢失的 header 有点冒险，您真的想要 openssl/opensslconf.h 和 openssl/bn.h 来自 [私有(private)] OpenSSL 库。

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$ strings /usr/local/ssl/lib/libcrypto.so | grep OpenSSL
OpenSSLDie
ECDSA_OpenSSL
ECDH_OpenSSL
OpenSSL_add_all_ciphers
OpenSSL_add_all_digests
UI_OpenSSL
%s(%d): OpenSSL internal error, assertion failed: %s
OpenSSL 1.0.2h  3 May 2016
MD4 part of OpenSSL 1.0.2h  3 May 2016
MD5 part of OpenSSL 1.0.2h  3 May 2016
SHA part of OpenSSL 1.0.2h  3 May 2016
SHA1 part of OpenSSL 1.0.2h  3 May 2016
SHA-256 part of OpenSSL 1.0.2h  3 May 2016
SHA-512 part of OpenSSL 1.0.2h  3 May 2016
OpenSSL HMAC method
RIPE-MD160 part of OpenSSL 1.0.2h  3 May 2016
DES part of OpenSSL 1.0.2h  3 May 2016
libdes part of OpenSSL 1.0.2h  3 May 2016
AES part of OpenSSL 1.0.2h  3 May 2016
RC2 part of OpenSSL 1.0.2h  3 May 2016
IDEA part of OpenSSL 1.0.2h  3 May 2016
Blowfish part of OpenSSL 1.0.2h  3 May 2016
CAST part of OpenSSL 1.0.2h  3 May 2016
CAMELLIA part of OpenSSL 1.0.2h  3 May 2016
Big Number part of OpenSSL 1.0.2h  3 May 2016
EC part of OpenSSL 1.0.2h  3 May 2016
OpenSSL EC algorithm
RSA part of OpenSSL 1.0.2h  3 May 2016
OpenSSL RSA method
DSA part of OpenSSL 1.0.2h  3 May 2016
OpenSSL DSA method
ECDSA part of OpenSSL 1.0.2h  3 May 2016
OpenSSL ECDSA method
OpenSSL DH Method
Diffie-Hellman part of OpenSSL 1.0.2h  3 May 2016
OpenSSL X9.42 DH method
OpenSSL PKCS#3 DH method
ECDH part of OpenSSL 1.0.2h  3 May 2016
OpenSSL ECDH method
OpenSSL 'dlfcn' shared library method
Stack part of OpenSSL 1.0.2h  3 May 2016
lhash part of OpenSSL 1.0.2h  3 May 2016
You need to read the OpenSSL FAQ, http://www.openssl.org/support/faq.html
RAND part of OpenSSL 1.0.2h  3 May 2016
EVP part of OpenSSL 1.0.2h  3 May 2016
ASN.1 part of OpenSSL 1.0.2h  3 May 2016
PEM part of OpenSSL 1.0.2h  3 May 2016
X.509 part of OpenSSL 1.0.2h  3 May 2016
CONF part of OpenSSL 1.0.2h  3 May 2016
OpenSSL default
CONF_def part of OpenSSL 1.0.2h  3 May 2016
TXT_DB part of OpenSSL 1.0.2h  3 May 2016
OpenSSL default user interface
OpenSSL CMAC method
ECDH_OpenSSL
ECDSA_OpenSSL
DSA_OpenSSL
OpenSSLDie
DH_OpenSSL
OpenSSL_add_all_digests
UI_OpenSSL
OpenSSL_add_all_ciphers