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tls/openssl: log some info about certificate

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Log subject name and issuer name from certificate after TLS connection
is established or fails to connect.
This commit is contained in:
Dmitry Podgorny
2018-11-06 10:53:46 +02:00
parent 13a0bc463c
commit 9cc9ea86bb
1 changed files with 25 additions and 0 deletions
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25
src/tls_openssl.c
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@@ -48,6 +48,7 @@ enum {
static void _tls_sock_wait(tls_t *tls, int error);
static void _tls_set_error(tls_t *tls, int error);
static void _tls_log_error(xmpp_ctx_t *ctx);
static void _tls_dump_cert_info(tls_t *tls);
void tls_initialize(void)
{
@@ -188,6 +189,7 @@ int tls_start(tls_t *tls)
x509_res = SSL_get_verify_result(tls->ssl);
xmpp_debug(tls->ctx, "tls", "Certificate verification %s",
x509_res == X509_V_OK ? "passed" : "FAILED");
_tls_dump_cert_info(tls);
_tls_set_error(tls, error);
return ret <= 0 ? 0 : 1;
@@ -307,3 +309,26 @@ static void _tls_log_error(xmpp_ctx_t *ctx)
}
} while (e != 0);
}
static void _tls_dump_cert_info(tls_t *tls)
{
X509 *cert;
char *name;
cert = SSL_get_peer_certificate(tls->ssl);
if (cert == NULL)
xmpp_debug(tls->ctx, "tls", "Certificate was not presented by peer");
else {
name = X509_NAME_oneline(X509_get_subject_name(cert), NULL, 0);
if (name != NULL) {
xmpp_debug(tls->ctx, "tls", "Subject=%s", name);
OPENSSL_free(name);
}
name = X509_NAME_oneline(X509_get_issuer_name(cert), NULL, 0);
if (name != NULL) {
xmpp_debug(tls->ctx, "tls", "Issuer=%s", name);
OPENSSL_free(name);
}
X509_free(cert);
}
}