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gss: allow gss_set_sec_context_option() to allocate a context

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The prototype for gss_set_sec_context_option() allows it to return a new
context, however this was not implemented. This functionality is required by
GSS_KRB5_IMPORT_RFC4121_CONTEXT_X.
This commit is contained in:
Luke Howard
2020-04-14 12:36:55 +10:00
parent b73c9cc063
commit 9a9aaa078c
1 changed files with 48 additions and 16 deletions
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64
lib/gssapi/mech/gss_set_sec_context_option.c
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2004, PADL Software Pty Ltd.
* Copyright (c) 2004, 2020, PADL Software Pty Ltd.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -40,31 +40,63 @@ gss_set_sec_context_option (OM_uint32 *minor_status,
{
struct _gss_context *ctx;
OM_uint32 major_status;
gssapi_mech_interface m;
gssapi_mech_interface mi;
int allocated_ctx;
*minor_status = 0;
if (context_handle == NULL)
return GSS_S_NO_CONTEXT;
return GSS_S_CALL_INACCESSIBLE_READ;
_gss_load_mech();
ctx = (struct _gss_context *) *context_handle;
if (ctx == NULL) {
ctx = calloc(1, sizeof(*ctx));
if (ctx == NULL) {
*minor_status = ENOMEM;
return GSS_S_FAILURE;
}
allocated_ctx = 1;
} else {
allocated_ctx = 0;
}
if (ctx == NULL)
return GSS_S_NO_CONTEXT;
major_status = GSS_S_BAD_MECH;
m = ctx->gc_mech;
if (allocated_ctx) {
struct _gss_mech_switch *m;
if (m == NULL)
return GSS_S_BAD_MECH;
HEIM_TAILQ_FOREACH(m, &_gss_mechs, gm_link) {
mi = &m->gm_mech;
if (m->gm_set_sec_context_option != NULL) {
major_status = m->gm_set_sec_context_option(minor_status,
&ctx->gc_ctx, object, value);
if (major_status != GSS_S_COMPLETE)
_gss_mg_error(m, *minor_status);
} else
major_status = GSS_S_BAD_MECH;
if (mi->gm_set_sec_context_option == NULL)
continue;
major_status = mi->gm_set_sec_context_option(minor_status,
&ctx->gc_ctx, object, value);
if (major_status == GSS_S_COMPLETE) {
ctx->gc_mech = mi;
break;
} else {
_gss_mg_error(mi, *minor_status);
}
}
} else {
mi = ctx->gc_mech;
if (mi->gm_set_sec_context_option != NULL) {
major_status = mi->gm_set_sec_context_option(minor_status,
&ctx->gc_ctx, object, value);
if (major_status != GSS_S_COMPLETE)
_gss_mg_error(mi, *minor_status);
}
}
if (allocated_ctx) {
if (major_status == GSS_S_COMPLETE)
*context_handle = (gss_ctx_id_t)ctx;
else
free(ctx);
}
return major_status;
}