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#include "mech_locl.h"
#include "heim_threads.h"
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 0
/*
* We cant check the mech here since a pseudo-mech might have
* called an lower layer and then the mech info is all broken
*/
if (mech != NULL && gss_oid_equal(mg->mech, mech) == 0)
return GSS_S_BAD_STATUS;
#endif
switch (type) {
case GSS_C_GSS_CODE: {
if (value != mg->maj_stat || mg->maj_error.length == 0)
break;
string->value = malloc(mg->maj_error.length + 1);
string->length = mg->maj_error.length;
memcpy(string->value, mg->maj_error.value, mg->maj_error.length);
((char *) string->value)[string->length] = '\0';
return GSS_S_COMPLETE;
}
case GSS_C_MECH_CODE: {
if (value != mg->min_stat || mg->min_error.length == 0)
break;
string->value = malloc(mg->min_error.length + 1);
string->length = mg->min_error.length;
memcpy(string->value, mg->min_error.value, mg->min_error.length);
((char *) string->value)[string->length] = '\0';
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;
/*
* Mechs without gss_display_status() does
* gss_mg_collect_error() by themself.
*/
if (m->gm_display_status == NULL)
return ;
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;
}
}
void
gss_mg_collect_error(gss_OID mech, OM_uint32 maj, OM_uint32 min)
{
gssapi_mech_interface m = __gss_get_mechanism(mech);
if (m == NULL)
return;
_gss_mg_error(m, maj, min);
}
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