Macros defined: KRB5_MECHANISM and SPNEGO_MECHANISM called from
HTTP, FTP and SOCKS on Unix

---
 lib/curl_gssapi.c    | 20 +++++++++-----------
 lib/curl_gssapi.h    | 18 +++++++++++++-----
 lib/http_negotiate.c |  2 +-
 lib/krb5.c           |  2 +-
 lib/socks_gssapi.c   |  2 +-
 5 files changed, 25 insertions(+), 19 deletions(-)
diff --git a/lib/curl_gssapi.c b/lib/curl_gssapi.c
index a86762a..7a2f84a 100644
--- a/lib/curl_gssapi.c
+++ b/lib/curl_gssapi.c
@@ -27,22 +27,21 @@
 #include "curl_gssapi.h"
 #include "sendf.h"
 
-static const char spnego_OID[] = "\x2b\x06\x01\x05\x05\x02";
-static const gss_OID_desc gss_mech_spnego = {
-  6,
-  &spnego_OID
-};
+static const char spengo_oid_bytes[] = "\x2b\x06\x01\x05\x05\x02";
+gss_OID_desc spnego_mech_oid = { 6, &spengo_oid_bytes };
+static const char krb5_oid_bytes[] = "\x2a\x86\x48\x86\xf7\x12\x01\x02\x02";
+gss_OID_desc krb5_mech_oid = { 9, &krb5_oid_bytes };
 
 OM_uint32 Curl_gss_init_sec_context(
     struct SessionHandle *data,
-    OM_uint32 * minor_status,
-    gss_ctx_id_t * context,
+    OM_uint32 *minor_status,
+    gss_ctx_id_t *context,
     gss_name_t target_name,
-    bool use_spnego,
+    gss_OID mech_type,
     gss_channel_bindings_t input_chan_bindings,
     gss_buffer_t input_token,
     gss_buffer_t output_token,
-    OM_uint32 * ret_flags)
+    OM_uint32 *ret_flags)
 {
   OM_uint32 req_flags = GSS_C_MUTUAL_FLAG | GSS_C_REPLAY_FLAG;
 
@@ -62,8 +61,7 @@ OM_uint32 Curl_gss_init_sec_context(
                               GSS_C_NO_CREDENTIAL, /* cred_handle */
                               context,
                               target_name,
-                              use_spnego ? (gss_OID)&gss_mech_spnego :
-                              GSS_C_NO_OID,
+                              mech_type,
                               req_flags,
                               0, /* time_req */
                               input_chan_bindings,
diff --git a/lib/curl_gssapi.h b/lib/curl_gssapi.h
index 5af7a02..ff752d5 100644
--- a/lib/curl_gssapi.h
+++ b/lib/curl_gssapi.h
@@ -39,19 +39,27 @@
 #  include <gssapi.h>
 #endif
 
+#ifndef SPNEGO_MECHANISM
+CURL_EXTERN gss_OID_desc spnego_mech_oid;
+#define SPNEGO_MECHANISM &spnego_mech_oid
+#endif
+#ifndef KRB5_MECHANISM
+CURL_EXTERN gss_OID_desc krb5_mech_oid;
+#define KRB5_MECHANISM &krb5_mech_oid
+#endif
 
-/* Common method for using gss api */
+/* Common method for using GSS-API */
 
 OM_uint32 Curl_gss_init_sec_context(
     struct SessionHandle *data,
-    OM_uint32 * minor_status,
-    gss_ctx_id_t * context,
+    OM_uint32 *minor_status,
+    gss_ctx_id_t *context,
     gss_name_t target_name,
-    bool use_spnego,
+    gss_OID mech_type,
     gss_channel_bindings_t input_chan_bindings,
     gss_buffer_t input_token,
     gss_buffer_t output_token,
-    OM_uint32 * ret_flags);
+    OM_uint32 *ret_flags);
 
 #endif /* HAVE_GSSAPI */
 
diff --git a/lib/http_negotiate.c b/lib/http_negotiate.c
index bbad0b4..dc2bb38 100644
--- a/lib/http_negotiate.c
+++ b/lib/http_negotiate.c
@@ -184,7 +184,7 @@ int Curl_input_negotiate(struct connectdata *conn, bool proxy,
                                            &minor_status,
                                            &neg_ctx->context,
                                            neg_ctx->server_name,
-                                           TRUE,
+                                           SPNEGO_MECHANISM,
                                            GSS_C_NO_CHANNEL_BINDINGS,
                                            &input_token,
                                            &output_token,
diff --git a/lib/krb5.c b/lib/krb5.c
index 9a36af1..10a79aa 100644
--- a/lib/krb5.c
+++ b/lib/krb5.c
@@ -236,7 +236,7 @@ krb5_auth(void *app_data, struct connectdata *conn)
                                       &min,
                                       context,
                                       gssname,
-                                      FALSE,
+                                      KRB5_MECHANISM,
                                       &chan,
                                       gssresp,
                                       &output_buffer,
diff --git a/lib/socks_gssapi.c b/lib/socks_gssapi.c
index 0a35dfa..dd955d6 100644
--- a/lib/socks_gssapi.c
+++ b/lib/socks_gssapi.c
@@ -181,7 +181,7 @@ CURLcode Curl_SOCKS5_gssapi_negotiate(int sockindex,
                                                  &gss_minor_status,
                                                  &gss_context,
                                                  server,
-                                                 FALSE,
+                                                 KRB5_MECHANISM,
                                                  NULL,
                                                  gss_token,
                                                  &gss_send_token,
-- 
2.0.1
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