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tls: include X509 error string when verify result is not x509_V_OK. #9527

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Merged
niedbalski merged 1 commit into from
Oct 29, 2024
Merged

tls: include X509 error string when verify result is not x509_V_OK. #9527

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6 changes: 4 additions & 2 deletions src/tls/openssl.c
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Original file line number Diff line number Diff line change
Expand Up @@ -684,6 +684,7 @@ static int tls_net_handshake(struct flb_tls *tls,
char err_buf[256];
struct tls_session *session = ptr_session;
struct tls_context *ctx;
const char *x509_err;

ctx = session->parent;
pthread_mutex_lock(&ctx->mutex);
Expand Down Expand Up @@ -743,8 +744,9 @@ static int tls_net_handshake(struct flb_tls *tls,
if (ret == 0) {
ssl_code = SSL_get_verify_result(session->ssl);
if (ssl_code != X509_V_OK) {
flb_error("[tls] error: unexpected EOF with reason: %s",
ERR_reason_error_string(ERR_get_error()));
/* Refer to: https://x509errors.org/ */
x509_err = X509_verify_cert_error_string(ssl_code);
flb_error("[tls] certificate verification failed, reason: %s (X509 code: %ld)", x509_err, ssl_code);
}
else {
flb_error("[tls] error: unexpected EOF");
Expand Down