fix: explicitly initialize ssl

From the OpenSSL man pages:
Numerous internal OpenSSL functions call OPENSSL_init_ssl().
Therefore, in order to perform nondefault initialisation,
OPENSSL_init_ssl() MUST be called by application code prior to any other OpenSSL function calls.
See: https://docs.openssl.org/1.1.1/man3/OPENSSL_init_ssl/#description

This fixes errors where e.g. the openssl config configures ssl_conf,
which requires ssl to be initialized.

Ticket: MEN-7549
Changelog: Title

Signed-off-by: Daniel Skinstad Drabitzius <[email protected]>

src/common/crypto/platform/openssl/crypto.cpp

@@ -282,6 +282,13 @@ ExpectedPrivateKey LoadFrom(const Args &args) {
 #endif // ndef MENDER_CRYPTO_OPENSSL_LEGACY
 
 ExpectedPrivateKey PrivateKey::Load(const Args &args) {
+	// Numerous internal OpenSSL functions call OPENSSL_init_ssl().
+	// Therefore, in order to perform nondefault initialisation,
+	// OPENSSL_init_ssl() MUST be called by application code prior to any other OpenSSL function
+	// calls. See: https://docs.openssl.org/1.1.1/man3/OPENSSL_init_ssl/#description
+	if (OPENSSL_init_ssl(0, nullptr); != OPENSSL_SUCCESS) {
+		log::Warning("Error initializing libssl: " + GetOpenSSLErrorMessage());
+	}
 	// Load OpenSSL config
 	if (CONF_modules_load_file(nullptr, nullptr, 0) != OPENSSL_SUCCESS) {
 		log::Warning("Failed to load OpenSSL configuration file: " + GetOpenSSLErrorMessage());