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Pass SSL arguments via one class and use shared_ptr instead of reference

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This commit is contained in:
Lee Clagett 2019-03-15 00:03:32 -04:00
parent 1f5ed328aa
commit 21eb1b0725
13 changed files with 302 additions and 209 deletions
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74
contrib/epee/include/net/net_ssl.h
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@ -46,23 +46,71 @@ namespace net_utils
e_ssl_support_enabled,
e_ssl_support_autodetect,
};
struct ssl_context_t
{
boost::asio::ssl::context context;
std::string ca_path;
std::vector<std::vector<uint8_t>> allowed_fingerprints;
bool allow_any_cert;
};
enum class ssl_verification_t : uint8_t
{
none = 0, //!< Do not verify peer.
system_ca, //!< Verify peer via system ca only (do not inspect user certificates)
user_certificates //!< Verify peer via user certificate(s) only.
};
struct ssl_authentication_t
{
std::string private_key_path; //!< Private key used for authentication
std::string certificate_path; //!< Certificate used for authentication to peer.
//! Load `private_key_path` and `certificate_path` into `ssl_context`.
void use_ssl_certificate(boost::asio::ssl::context &ssl_context) const;
};
/*!
\note `verification != disabled && support == disabled` is currently
"allowed" via public interface but obviously invalid configuation.
*/
class ssl_options_t
{
// force sorted behavior in private
std::vector<std::vector<std::uint8_t>> fingerprints_;
public:
std::string ca_path;
ssl_authentication_t auth;
ssl_support_t support;
ssl_verification_t verification;
//! Verification is set to system ca unless SSL is disabled.
ssl_options_t(ssl_support_t support)
: fingerprints_(),
ca_path(),
auth(),
support(support),
verification(support == ssl_support_t::e_ssl_support_disabled ? ssl_verification_t::none : ssl_verification_t::system_ca)
{}
//! Provide user fingerprints and/or ca path. Enables SSL and user_certificate verification
ssl_options_t(std::vector<std::vector<std::uint8_t>> fingerprints, std::string ca_path);
ssl_options_t(const ssl_options_t&) = default;
ssl_options_t(ssl_options_t&&) = default;
ssl_options_t& operator=(const ssl_options_t&) = default;
ssl_options_t& operator=(ssl_options_t&&) = default;
//! \return False iff ssl is disabled, otherwise true.
explicit operator bool() const noexcept { return support != ssl_support_t::e_ssl_support_disabled; }
//! Search against internal fingerprints. Always false if `behavior() != user_certificate_check`.
bool has_fingerprint(boost::asio::ssl::verify_context &ctx) const;
boost::asio::ssl::context create_context() const;
bool handshake(boost::asio::ssl::stream<boost::asio::ip::tcp::socket> &socket, boost::asio::ssl::stream_base::handshake_type type) const;
};
// https://security.stackexchange.com/questions/34780/checking-client-hello-for-https-classification
constexpr size_t get_ssl_magic_size() { return 9; }
bool is_ssl(const unsigned char *data, size_t len);
ssl_context_t create_ssl_context(const std::pair<std::string, std::string> &private_key_and_certificate_path, const std::string &ca_path, std::vector<std::vector<uint8_t>> allowed_fingerprints, bool allow_any_cert);
void use_ssl_certificate(ssl_context_t &ssl_context, const std::pair<std::string, std::string> &private_key_and_certificate_path);
bool is_certificate_allowed(boost::asio::ssl::verify_context &ctx, const ssl_context_t &ssl_context);
bool ssl_handshake(boost::asio::ssl::stream<boost::asio::ip::tcp::socket> &socket, boost::asio::ssl::stream_base::handshake_type type, const epee::net_utils::ssl_context_t &ssl_context);
bool ssl_support_from_string(ssl_support_t &ssl, boost::string_ref s);
bool ssl_support_from_string(ssl_support_t &ssl, boost::string_ref s);
}
}