spnego: Renamed the context's SPN variable

To be consistent with the Kerberos 5 context and other authentication
code.

lib/urldata.h

@@ -464,7 +464,7 @@ struct negotiatedata {
 #ifdef HAVE_GSSAPI
   OM_uint32 status;
   gss_ctx_id_t context;
-  gss_name_t server_name;
+  gss_name_t spn;
   gss_buffer_desc output_token;
 #else
 #ifdef USE_WINDOWS_SSPI
@@ -473,7 +473,7 @@ struct negotiatedata {
   CtxtHandle *context;
   SEC_WINNT_AUTH_IDENTITY identity;
   SEC_WINNT_AUTH_IDENTITY *p_identity;
-  TCHAR *server_name;
+  TCHAR *spn;
   size_t token_max;
   BYTE *output_token;
   size_t output_token_length;

lib/vauth/spnego_gssapi.c

@@ -88,7 +88,7 @@ CURLcode Curl_auth_decode_spnego_message(struct SessionHandle *data,
   }
 
   /* Generate our SPN */
-  if(!nego->server_name) {
+  if(!nego->spn) {
     char *spn = Curl_auth_build_gssapi_spn(service, host);
     if(!spn)
       return CURLE_OUT_OF_MEMORY;
@@ -100,7 +100,7 @@ CURLcode Curl_auth_decode_spnego_message(struct SessionHandle *data,
     /* Import the SPN */
     major_status = gss_import_name(&minor_status, &spn_token,
                                    GSS_C_NT_HOSTBASED_SERVICE,
-                                   &nego->server_name);
+                                   &nego->spn);
     if(GSS_ERROR(major_status)) {
       Curl_gss_log_error(data, "gss_import_name() failed: ",
                          major_status, minor_status);
@@ -137,7 +137,7 @@ CURLcode Curl_auth_decode_spnego_message(struct SessionHandle *data,
   major_status = Curl_gss_init_sec_context(data,
                                            &minor_status,
                                            &nego->context,
-                                           nego->server_name,
+                                           nego->spn,
                                            &Curl_spnego_mech_oid,
                                            GSS_C_NO_CHANNEL_BINDINGS,
                                            &input_token,
@@ -246,9 +246,9 @@ void Curl_auth_spnego_cleanup(struct negotiatedata* nego)
   }
 
   /* Free the SPN */
-  if(nego->server_name != GSS_C_NO_NAME) {
-    gss_release_name(&minor_status, &nego->server_name);
-    nego->server_name = GSS_C_NO_NAME;
+  if(nego->spn != GSS_C_NO_NAME) {
+    gss_release_name(&minor_status, &nego->spn);
+    nego->spn = GSS_C_NO_NAME;
   }
 
   /* Reset any variables */

lib/vauth/spnego_sspi.c

@@ -89,9 +89,9 @@ CURLcode Curl_auth_decode_spnego_message(struct SessionHandle *data,
   }
 
   /* Generate our SPN */
-  if(!nego->server_name) {
-    nego->server_name = Curl_auth_build_spn(service, host);
-    if(!nego->server_name)
+  if(!nego->spn) {
+    nego->spn = Curl_auth_build_spn(service, host);
+    if(!nego->spn)
       return CURLE_OUT_OF_MEMORY;
   }
 
@@ -189,7 +189,7 @@ CURLcode Curl_auth_decode_spnego_message(struct SessionHandle *data,
   nego->status = s_pSecFn->InitializeSecurityContext(nego->credentials,
                                                      chlg ? nego->context :
                                                             NULL,
-                                                     nego->server_name,
+                                                     nego->spn,
                                                      ISC_REQ_CONFIDENTIALITY,
                                                      0, SECURITY_NATIVE_DREP,
                                                      chlg ? &chlg_desc : NULL,
@@ -287,7 +287,7 @@ void Curl_auth_spnego_cleanup(struct negotiatedata* nego)
   nego->p_identity = NULL;
 
   /* Free the SPN and output token */
-  Curl_safefree(nego->server_name);
+  Curl_safefree(nego->spn);
   Curl_safefree(nego->output_token);
 
   /* Reset any variables */