1/* 2 * Copyright (c) 2006 Kungliga Tekniska Högskolan 3 * (Royal Institute of Technology, Stockholm, Sweden). 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * 3. Neither the name of the Institute nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34#include "mech_locl.h" 35 36/** 37 * Turn an mech OID into an name 38 * 39 * Try to turn a OID into a mechanism name. If a matching OID can't be 40 * found, this function will return NULL. 41 * 42 * The caller must free the oid_str buffer with gss_release_buffer() 43 * when done with the string. 44 * 45 * @param minor_status an minor status code 46 * @param oid an oid 47 * @param oid_str buffer that will point to a NUL terminated string that is the numreric OID 48 * 49 * @returns a gss major status code 50 * 51 * @ingroup gssapi 52 */ 53 54GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL 55gss_oid_to_str(OM_uint32 *minor_status, gss_OID oid, gss_buffer_t oid_str) 56{ 57 int ret; 58 size_t size; 59 heim_oid o; 60 char *p; 61 62 _mg_buffer_zero(oid_str); 63 64 if (oid == GSS_C_NULL_OID) 65 return GSS_S_FAILURE; 66 67 ret = der_get_oid (oid->elements, oid->length, &o, &size); 68 if (ret) { 69 *minor_status = ret; 70 return GSS_S_FAILURE; 71 } 72 73 ret = der_print_heim_oid(&o, ' ', &p); 74 der_free_oid(&o); 75 if (ret) { 76 *minor_status = ret; 77 return GSS_S_FAILURE; 78 } 79 80 oid_str->value = p; 81 oid_str->length = strlen(p); 82 83 *minor_status = 0; 84 return GSS_S_COMPLETE; 85} 86 87/** 88 * Turn an mech OID into an name 89 * 90 * Try to turn a OID into a mechanism name. If a matching OID can't be 91 * found, this function will return NULL. 92 * 93 * @param oid an mechanism oid 94 * 95 * @returns pointer a static strng to a name or NULL when not found. 96 * 97 * @ingroup gssapi 98 */ 99 100GSSAPI_LIB_FUNCTION const char * GSSAPI_LIB_CALL 101gss_oid_to_name(gss_const_OID oid) 102{ 103 size_t i; 104 105 for (i = 0; _gss_ont_mech[i].oid; i++) { 106 if (gss_oid_equal(oid, _gss_ont_mech[i].oid)) { 107 if (_gss_ont_mech[i].short_desc) 108 return _gss_ont_mech[i].short_desc; 109 return _gss_ont_mech[i].name; 110 } 111 } 112 return NULL; 113} 114 115/** 116 * Turn an mech name into an OID 117 * 118 * Try to turn a string/name into an OID. If a static OID can't be 119 * found, this function will return NULL. 120 * 121 * WARNING: do _NOT_ call gss_release_oid() on the OID returned. 122 * 123 * @param name name of a OID 124 * 125 * @returns pointer a static OID or GSS_C_NO_OID when not found. 126 * 127 * 128 * @ingroup gssapi 129 */ 130 131GSSAPI_LIB_FUNCTION gss_const_OID GSSAPI_LIB_CALL 132gss_name_to_oid(const char *name) 133{ 134 size_t i, partial = (size_t)-1; 135 136 for (i = 0; _gss_ont_mech[i].oid; i++) { 137 if (strcasecmp(name, _gss_ont_mech[i].short_desc) == 0) 138 return _gss_ont_mech[i].oid; 139 if (strncasecmp(name, _gss_ont_mech[i].short_desc, strlen(name)) == 0) { 140 if (partial != (size_t)-1) 141 return NULL; 142 partial = i; 143 } 144 } 145 if (partial != (size_t)-1) 146 return _gss_ont_mech[partial].oid; 147 148 return NULL; 149} 150