1 /* #pragma ident "@(#)g_inquire_names.c 1.16 04/02/23 SMI" */ 2 3 /* 4 * Copyright 1996 by Sun Microsystems, Inc. 5 * 6 * Permission to use, copy, modify, distribute, and sell this software 7 * and its documentation for any purpose is hereby granted without fee, 8 * provided that the above copyright notice appears in all copies and 9 * that both that copyright notice and this permission notice appear in 10 * supporting documentation, and that the name of Sun Microsystems not be used 11 * in advertising or publicity pertaining to distribution of the software 12 * without specific, written prior permission. Sun Microsystems makes no 13 * representations about the suitability of this software for any 14 * purpose. It is provided "as is" without express or implied warranty. 15 * 16 * SUN MICROSYSTEMS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 17 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO 18 * EVENT SHALL SUN MICROSYSTEMS BE LIABLE FOR ANY SPECIAL, INDIRECT OR 19 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF 20 * USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR 21 * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 22 * PERFORMANCE OF THIS SOFTWARE. 23 */ 24 25 /* 26 * glue routine for gss_inquire_context 27 */ 28 29 #include "mglueP.h" 30 31 #define MAX_MECH_OID_PAIRS 32 32 33 /* Last argument new for V2 */ 34 OM_uint32 KRB5_CALLCONV 35 gss_inquire_names_for_mech(OM_uint32 *minor_status, gss_OID mechanism, 36 gss_OID_set *name_types) 37 { 38 OM_uint32 status; 39 gss_OID selected_mech = GSS_C_NO_OID, public_mech; 40 gss_mechanism mech; 41 42 /* Initialize outputs. */ 43 44 if (minor_status != NULL) 45 *minor_status = 0; 46 47 if (name_types != NULL) 48 *name_types = GSS_C_NO_OID_SET; 49 50 /* Validate arguments. */ 51 52 if (minor_status == NULL) 53 return (GSS_S_CALL_INACCESSIBLE_WRITE); 54 55 if (name_types == NULL) 56 return (GSS_S_CALL_INACCESSIBLE_WRITE); 57 58 /* 59 * select the approprate underlying mechanism routine and 60 * call it. 61 */ 62 63 status = gssint_select_mech_type(minor_status, mechanism, 64 &selected_mech); 65 if (status != GSS_S_COMPLETE) 66 return (status); 67 68 mech = gssint_get_mechanism(selected_mech); 69 if (mech == NULL) 70 return GSS_S_BAD_MECH; 71 else if (mech->gss_inquire_names_for_mech == NULL) 72 return GSS_S_UNAVAILABLE; 73 public_mech = gssint_get_public_oid(selected_mech); 74 status = mech->gss_inquire_names_for_mech(minor_status, public_mech, 75 name_types); 76 if (status != GSS_S_COMPLETE) 77 map_error(minor_status, mech); 78 79 return status; 80 } 81 82 static OM_uint32 83 val_inq_mechs4name_args( 84 OM_uint32 *minor_status, 85 const gss_name_t input_name, 86 gss_OID_set *mech_set) 87 { 88 89 /* Initialize outputs. */ 90 if (minor_status != NULL) 91 *minor_status = 0; 92 93 if (mech_set != NULL) 94 *mech_set = GSS_C_NO_OID_SET; 95 96 /* Validate arguments.e 97 */ 98 if (minor_status == NULL) 99 return (GSS_S_CALL_INACCESSIBLE_WRITE); 100 101 if (input_name == GSS_C_NO_NAME) 102 return (GSS_S_BAD_NAME); 103 104 return (GSS_S_COMPLETE); 105 } 106 107 static int 108 mech_supports_nametype(gss_OID mech_oid, gss_OID name_type) 109 { 110 OM_uint32 status, minor; 111 gss_OID_set types = GSS_C_NO_OID_SET; 112 int present; 113 114 status = gss_inquire_names_for_mech(&minor, mech_oid, &types); 115 if (status != GSS_S_COMPLETE) 116 return (0); 117 status = gss_test_oid_set_member(&minor, name_type, types, &present); 118 (void) gss_release_oid_set(&minor, &types); 119 return (status == GSS_S_COMPLETE && present); 120 } 121 122 OM_uint32 KRB5_CALLCONV 123 gss_inquire_mechs_for_name(OM_uint32 *minor_status, 124 const gss_name_t input_name, gss_OID_set *mech_set) 125 { 126 OM_uint32 status, tmpmin; 127 gss_OID_set all_mechs = GSS_C_NO_OID_SET; 128 gss_OID_set mechs = GSS_C_NO_OID_SET; 129 gss_OID mech_oid, name_type; 130 gss_buffer_desc name_buffer = GSS_C_EMPTY_BUFFER; 131 size_t i; 132 133 status = val_inq_mechs4name_args(minor_status, input_name, mech_set); 134 if (status != GSS_S_COMPLETE) 135 return (status); 136 137 status = gss_display_name(minor_status, input_name, &name_buffer, 138 &name_type); 139 if (status != GSS_S_COMPLETE) 140 goto cleanup; 141 status = gss_indicate_mechs(minor_status, &all_mechs); 142 if (status != GSS_S_COMPLETE) 143 goto cleanup; 144 status = gss_create_empty_oid_set(minor_status, &mechs); 145 if (status != GSS_S_COMPLETE) 146 goto cleanup; 147 for (i = 0; i < all_mechs->count; i++) { 148 mech_oid = &all_mechs->elements[i]; 149 if (mech_supports_nametype(mech_oid, name_type)) { 150 status = gss_add_oid_set_member(minor_status, mech_oid, &mechs); 151 if (status != GSS_S_COMPLETE) 152 goto cleanup; 153 } 154 } 155 156 *mech_set = mechs; 157 mechs = GSS_C_NO_OID_SET; 158 159 cleanup: 160 (void) gss_release_buffer(&tmpmin, &name_buffer); 161 (void) gss_release_oid_set(&tmpmin, &all_mechs); 162 (void) gss_release_oid_set(&tmpmin, &mechs); 163 return (status); 164 } 165