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-rw-r--r--lib/curl_sasl_sspi.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/curl_sasl_sspi.c b/lib/curl_sasl_sspi.c
index aa992ce5e..99ea6cab3 100644
--- a/lib/curl_sasl_sspi.c
+++ b/lib/curl_sasl_sspi.c
@@ -1030,6 +1030,8 @@ CURLcode Curl_sasl_create_gssapi_security_message(struct SessionHandle *data,
/* Decrypt in the inbound challenge obtaining the qop */
status = s_pSecFn->DecryptMessage(krb5->context, &input_desc, 0, &qop);
if(status != SEC_E_OK) {
+ infof(data, "GSSAPI handshake failure (empty security message)\n");
+
Curl_safefree(chlg);
return CURLE_BAD_CONTENT_ENCODING;
@@ -1037,6 +1039,8 @@ CURLcode Curl_sasl_create_gssapi_security_message(struct SessionHandle *data,
/* Not 4 octets long so fail as per RFC4752 Section 3.1 */
if(input_buf[1].cbBuffer != 4) {
+ infof(data, "GSSAPI handshake failure (invalid security data)\n");
+
Curl_safefree(chlg);
return CURLE_BAD_CONTENT_ENCODING;
@@ -1050,6 +1054,8 @@ CURLcode Curl_sasl_create_gssapi_security_message(struct SessionHandle *data,
/* Extract the security layer */
sec_layer = indata & 0x000000FF;
if(!(sec_layer & KERB_WRAP_NO_ENCRYPT)) {
+ infof(data, "GSSAPI handshake failure (invalid security layer)\n");
+
Curl_safefree(chlg);
return CURLE_BAD_CONTENT_ENCODING;