Glue to catch the error from the lower gss-api layer and save that for

later so gss_display_status() can show the error. git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@19924 ec53bebd-3082-4978-b11e-865c3cabbd6b
2007-01-16 10:17:01 +00:00
parent 0353cc0b50
commit 545bb59019
1 changed files with 141 additions and 0 deletions
--- a/lib/gssapi/mech/context.c
+++ b/lib/gssapi/mech/context.c
@@ -0,0 +1,141 @@
+#include "mech/mech_locl.h"
+#include "heim_threads.h"
+
+RCSID("$Id$");
+
+struct mg_thread_ctx {
+    gss_OID mech;
+    OM_uint32 maj_stat;
+    OM_uint32 min_stat;
+    gss_buffer_desc maj_error;
+    gss_buffer_desc min_error;
+};
+
+static HEIMDAL_MUTEX context_mutex = HEIMDAL_MUTEX_INITIALIZER;
+static int created_key;
+static HEIMDAL_thread_key context_key;
+
+
+static void
+destroy_context(void *ptr)
+{
+    struct mg_thread_ctx *mg = ptr;
+    OM_uint32 junk;
+
+    if (mg == NULL)
+	return;
+
+    gss_release_buffer(&junk, &mg->maj_error);
+    gss_release_buffer(&junk, &mg->min_error);
+    free(mg);
+}
+
+
+static struct mg_thread_ctx *
+_gss_mechglue_thread(void)
+{
+    struct mg_thread_ctx *ctx;
+    int ret = 0;
+
+    HEIMDAL_MUTEX_lock(&context_mutex);
+
+    if (!created_key) {
+	HEIMDAL_key_create(&context_key, destroy_context, ret);
+	if (ret) {
+	    HEIMDAL_MUTEX_unlock(&context_mutex);
+	    return NULL;
+	}
+	created_key = 1;
+    }
+    HEIMDAL_MUTEX_unlock(&context_mutex);
+
+    ctx = HEIMDAL_getspecific(context_key);
+    if (ctx == NULL) {
+
+	ctx = calloc(1, sizeof(*ctx));
+	if (ctx == NULL)
+	    return NULL;
+	HEIMDAL_setspecific(context_key, ctx, ret);
+	if (ret) {
+	    free(ctx);
+	    return NULL;
+	}
+    }
+    return ctx;
+}
+
+OM_uint32
+_gss_mg_get_error(const gss_OID mech, OM_uint32 type,
+		  OM_uint32 value, gss_buffer_t string)
+{
+    struct mg_thread_ctx *mg;
+
+    mg = _gss_mechglue_thread();
+    if (mg == NULL)
+	return GSS_S_BAD_STATUS;
+
+    if (mech != NULL && gss_oid_equal(mg->mech, mech) == 0)
+	return GSS_S_BAD_STATUS;
+
+    switch (type) {
+    case GSS_C_GSS_CODE: {
+	if (value != mg->maj_stat)
+	    break;
+	string->value = malloc(mg->maj_error.length);
+	string->length = mg->maj_error.length;
+	memcpy(string->value, mg->maj_error.value, mg->maj_error.length);
+	return GSS_S_COMPLETE;
+    }
+    case GSS_C_MECH_CODE: {
+	if (value != mg->min_stat)
+	    break;
+	string->value = malloc(mg->min_error.length);
+	string->length = mg->min_error.length;
+	memcpy(string->value, mg->min_error.value, mg->min_error.length);
+	return GSS_S_COMPLETE;
+    }
+    }
+    string->value = NULL;
+    string->length = 0;
+    return GSS_S_BAD_STATUS;
+}
+
+void
+_gss_mg_error(gssapi_mech_interface m, OM_uint32 maj, OM_uint32 min)
+{
+    OM_uint32 major_status, minor_status;
+    OM_uint32 message_content;
+    struct mg_thread_ctx *mg;
+
+    mg = _gss_mechglue_thread();
+    if (mg == NULL)
+	return;
+
+    gss_release_buffer(&minor_status, &mg->maj_error);
+    gss_release_buffer(&minor_status, &mg->min_error);
+
+    mg->mech = &m->gm_mech_oid;
+    mg->maj_stat = maj;
+    mg->min_stat = min;
+
+    major_status = m->gm_display_status(&minor_status,
+					maj, 
+					GSS_C_GSS_CODE,
+					&m->gm_mech_oid,
+					&message_content,
+					&mg->maj_error);
+    if (GSS_ERROR(major_status)) {
+	mg->maj_error.value = NULL;
+	mg->maj_error.length = 0;
+    }
+    major_status = m->gm_display_status(&minor_status,
+					min, 
+					GSS_C_MECH_CODE,
+					&m->gm_mech_oid,
+					&message_content,
+					&mg->min_error);
+    if (GSS_ERROR(major_status)) {
+	mg->min_error.value = NULL;
+	mg->min_error.length = 0;
+    }
+}