1 /* $NetBSD: set_sec_context_option.c,v 1.2 2017/01/28 21:31:46 christos Exp $ */ 2 3 /* 4 * Copyright (c) 2004, PADL Software Pty Ltd. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * 3. Neither the name of PADL Software nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY PADL SOFTWARE AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL PADL SOFTWARE OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 /* 36 * glue routine for _gsskrb5_inquire_sec_context_by_oid 37 */ 38 39 #include "gsskrb5_locl.h" 40 41 static OM_uint32 42 get_bool(OM_uint32 *minor_status, 43 const gss_buffer_t value, 44 int *flag) 45 { 46 if (value->value == NULL || value->length != 1) { 47 *minor_status = EINVAL; 48 return GSS_S_FAILURE; 49 } 50 *flag = *((const char *)value->value) != 0; 51 return GSS_S_COMPLETE; 52 } 53 54 static OM_uint32 55 get_string(OM_uint32 *minor_status, 56 const gss_buffer_t value, 57 char **str) 58 { 59 if (value == NULL || value->length == 0) { 60 *str = NULL; 61 } else { 62 *str = malloc(value->length + 1); 63 if (*str == NULL) { 64 *minor_status = 0; 65 return GSS_S_UNAVAILABLE; 66 } 67 memcpy(*str, value->value, value->length); 68 (*str)[value->length] = '\0'; 69 } 70 return GSS_S_COMPLETE; 71 } 72 73 static OM_uint32 74 get_int32(OM_uint32 *minor_status, 75 const gss_buffer_t value, 76 OM_uint32 *ret) 77 { 78 *minor_status = 0; 79 if (value == NULL || value->length == 0) 80 *ret = 0; 81 else if (value->length == sizeof(*ret)) 82 memcpy(ret, value->value, sizeof(*ret)); 83 else 84 return GSS_S_UNAVAILABLE; 85 86 return GSS_S_COMPLETE; 87 } 88 89 static OM_uint32 90 set_int32(OM_uint32 *minor_status, 91 const gss_buffer_t value, 92 OM_uint32 set) 93 { 94 *minor_status = 0; 95 if (value->length == sizeof(set)) 96 memcpy(value->value, &set, sizeof(set)); 97 else 98 return GSS_S_UNAVAILABLE; 99 100 return GSS_S_COMPLETE; 101 } 102 103 OM_uint32 GSSAPI_CALLCONV 104 _gsskrb5_set_sec_context_option 105 (OM_uint32 *minor_status, 106 gss_ctx_id_t *context_handle, 107 const gss_OID desired_object, 108 const gss_buffer_t value) 109 { 110 krb5_context context; 111 OM_uint32 maj_stat; 112 113 GSSAPI_KRB5_INIT (&context); 114 115 if (value == GSS_C_NO_BUFFER) { 116 *minor_status = EINVAL; 117 return GSS_S_FAILURE; 118 } 119 120 if (gss_oid_equal(desired_object, GSS_KRB5_COMPAT_DES3_MIC_X)) { 121 gsskrb5_ctx ctx; 122 int flag; 123 124 if (*context_handle == GSS_C_NO_CONTEXT) { 125 *minor_status = EINVAL; 126 return GSS_S_NO_CONTEXT; 127 } 128 129 maj_stat = get_bool(minor_status, value, &flag); 130 if (maj_stat != GSS_S_COMPLETE) 131 return maj_stat; 132 133 ctx = (gsskrb5_ctx)*context_handle; 134 HEIMDAL_MUTEX_lock(&ctx->ctx_id_mutex); 135 if (flag) 136 ctx->more_flags |= COMPAT_OLD_DES3; 137 else 138 ctx->more_flags &= ~COMPAT_OLD_DES3; 139 ctx->more_flags |= COMPAT_OLD_DES3_SELECTED; 140 HEIMDAL_MUTEX_unlock(&ctx->ctx_id_mutex); 141 return GSS_S_COMPLETE; 142 } else if (gss_oid_equal(desired_object, GSS_KRB5_SET_DNS_CANONICALIZE_X)) { 143 int flag; 144 145 maj_stat = get_bool(minor_status, value, &flag); 146 if (maj_stat != GSS_S_COMPLETE) 147 return maj_stat; 148 149 krb5_set_dns_canonicalize_hostname(context, flag); 150 return GSS_S_COMPLETE; 151 152 } else if (gss_oid_equal(desired_object, GSS_KRB5_REGISTER_ACCEPTOR_IDENTITY_X)) { 153 char *str; 154 155 maj_stat = get_string(minor_status, value, &str); 156 if (maj_stat != GSS_S_COMPLETE) 157 return maj_stat; 158 159 maj_stat = _gsskrb5_register_acceptor_identity(minor_status, str); 160 free(str); 161 162 return maj_stat; 163 164 } else if (gss_oid_equal(desired_object, GSS_KRB5_SET_DEFAULT_REALM_X)) { 165 char *str; 166 167 maj_stat = get_string(minor_status, value, &str); 168 if (maj_stat != GSS_S_COMPLETE) 169 return maj_stat; 170 if (str == NULL) { 171 *minor_status = 0; 172 return GSS_S_CALL_INACCESSIBLE_READ; 173 } 174 175 krb5_set_default_realm(context, str); 176 free(str); 177 178 *minor_status = 0; 179 return GSS_S_COMPLETE; 180 181 } else if (gss_oid_equal(desired_object, GSS_KRB5_SEND_TO_KDC_X)) { 182 183 *minor_status = EINVAL; 184 return GSS_S_FAILURE; 185 186 } else if (gss_oid_equal(desired_object, GSS_KRB5_CCACHE_NAME_X)) { 187 char *str; 188 189 maj_stat = get_string(minor_status, value, &str); 190 if (maj_stat != GSS_S_COMPLETE) 191 return maj_stat; 192 if (str == NULL) { 193 *minor_status = 0; 194 return GSS_S_CALL_INACCESSIBLE_READ; 195 } 196 197 *minor_status = krb5_cc_set_default_name(context, str); 198 free(str); 199 if (*minor_status) 200 return GSS_S_FAILURE; 201 202 return GSS_S_COMPLETE; 203 } else if (gss_oid_equal(desired_object, GSS_KRB5_SET_TIME_OFFSET_X)) { 204 OM_uint32 offset; 205 time_t t; 206 207 maj_stat = get_int32(minor_status, value, &offset); 208 if (maj_stat != GSS_S_COMPLETE) 209 return maj_stat; 210 211 t = time(NULL) + offset; 212 213 krb5_set_real_time(context, t, 0); 214 215 *minor_status = 0; 216 return GSS_S_COMPLETE; 217 } else if (gss_oid_equal(desired_object, GSS_KRB5_GET_TIME_OFFSET_X)) { 218 krb5_timestamp sec; 219 int32_t usec; 220 time_t t; 221 222 t = time(NULL); 223 224 krb5_us_timeofday (context, &sec, &usec); 225 226 maj_stat = set_int32(minor_status, value, sec - t); 227 if (maj_stat != GSS_S_COMPLETE) 228 return maj_stat; 229 230 *minor_status = 0; 231 return GSS_S_COMPLETE; 232 } else if (gss_oid_equal(desired_object, GSS_KRB5_PLUGIN_REGISTER_X)) { 233 struct gsskrb5_krb5_plugin c; 234 235 if (value->length != sizeof(c)) { 236 *minor_status = EINVAL; 237 return GSS_S_FAILURE; 238 } 239 memcpy(&c, value->value, sizeof(c)); 240 krb5_plugin_register(context, c.type, c.name, c.symbol); 241 242 *minor_status = 0; 243 return GSS_S_COMPLETE; 244 } 245 246 *minor_status = EINVAL; 247 return GSS_S_FAILURE; 248 } 249
Indexes created Sat Feb 28 05:31:39 UTC 2026