1/* $NetBSD: display_status.c,v 1.1.1.1 2011/04/13 18:14:45 elric Exp $ */ 2 3/* 4 * Copyright (c) 1998 - 2006 Kungliga Tekniska Högskolan 5 * (Royal Institute of Technology, Stockholm, Sweden). 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * 3. Neither the name of the Institute nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36#include "gsskrb5_locl.h" 37 38static const char * 39calling_error(OM_uint32 v) 40{ 41 static const char *msgs[] = { 42 NULL, /* 0 */ 43 "A required input parameter could not be read.", /* */ 44 "A required output parameter could not be written.", /* */ 45 "A parameter was malformed" 46 }; 47 48 v >>= GSS_C_CALLING_ERROR_OFFSET; 49 50 if (v == 0) 51 return ""; 52 else if (v >= sizeof(msgs)/sizeof(*msgs)) 53 return "unknown calling error"; 54 else 55 return msgs[v]; 56} 57 58static const char * 59routine_error(OM_uint32 v) 60{ 61 static const char *msgs[] = { 62 NULL, /* 0 */ 63 "An unsupported mechanism was requested", 64 "An invalid name was supplied", 65 "A supplied name was of an unsupported type", 66 "Incorrect channel bindings were supplied", 67 "An invalid status code was supplied", 68 "A token had an invalid MIC", 69 "No credentials were supplied, " 70 "or the credentials were unavailable or inaccessible.", 71 "No context has been established", 72 "A token was invalid", 73 "A credential was invalid", 74 "The referenced credentials have expired", 75 "The context has expired", 76 "Miscellaneous failure (see text)", 77 "The quality-of-protection requested could not be provide", 78 "The operation is forbidden by local security policy", 79 "The operation or option is not available", 80 "The requested credential element already exists", 81 "The provided name was not a mechanism name.", 82 }; 83 84 v >>= GSS_C_ROUTINE_ERROR_OFFSET; 85 86 if (v == 0) 87 return ""; 88 else if (v >= sizeof(msgs)/sizeof(*msgs)) 89 return "unknown routine error"; 90 else 91 return msgs[v]; 92} 93 94static const char * 95supplementary_error(OM_uint32 v) 96{ 97 static const char *msgs[] = { 98 "normal completion", 99 "continuation call to routine required", 100 "duplicate per-message token detected", 101 "timed-out per-message token detected", 102 "reordered (early) per-message token detected", 103 "skipped predecessor token(s) detected" 104 }; 105 106 v >>= GSS_C_SUPPLEMENTARY_OFFSET; 107 108 if (v >= sizeof(msgs)/sizeof(*msgs)) 109 return "unknown routine error"; 110 else 111 return msgs[v]; 112} 113 114void 115_gsskrb5_clear_status (void) 116{ 117 krb5_context context; 118 119 if (_gsskrb5_init (&context) != 0) 120 return; 121 krb5_clear_error_message(context); 122} 123 124void 125_gsskrb5_set_status (int ret, const char *fmt, ...) 126{ 127 krb5_context context; 128 va_list args; 129 char *str; 130 int e; 131 132 if (_gsskrb5_init (&context) != 0) 133 return; 134 135 va_start(args, fmt); 136 e = vasprintf(&str, fmt, args); 137 va_end(args); 138 if (e >= 0 && str) { 139 krb5_set_error_message(context, ret, "%s", str); 140 free(str); 141 } 142} 143 144OM_uint32 GSSAPI_CALLCONV _gsskrb5_display_status 145(OM_uint32 *minor_status, 146 OM_uint32 status_value, 147 int status_type, 148 const gss_OID mech_type, 149 OM_uint32 *message_context, 150 gss_buffer_t status_string) 151{ 152 krb5_context context; 153 char *buf = NULL; 154 int e = 0; 155 156 GSSAPI_KRB5_INIT (&context); 157 158 status_string->length = 0; 159 status_string->value = NULL; 160 161 if (gss_oid_equal(mech_type, GSS_C_NO_OID) == 0 && 162 gss_oid_equal(mech_type, GSS_KRB5_MECHANISM) == 0) { 163 *minor_status = 0; 164 return GSS_C_GSS_CODE; 165 } 166 167 if (status_type == GSS_C_GSS_CODE) { 168 if (GSS_SUPPLEMENTARY_INFO(status_value)) 169 e = asprintf(&buf, "%s", 170 supplementary_error(GSS_SUPPLEMENTARY_INFO(status_value))); 171 else 172 e = asprintf (&buf, "%s %s", 173 calling_error(GSS_CALLING_ERROR(status_value)), 174 routine_error(GSS_ROUTINE_ERROR(status_value))); 175 } else if (status_type == GSS_C_MECH_CODE) { 176 const char *buf2 = krb5_get_error_message(context, status_value); 177 if (buf2) { 178 buf = strdup(buf2); 179 krb5_free_error_message(context, buf2); 180 } else { 181 e = asprintf(&buf, "unknown mech error-code %u", 182 (unsigned)status_value); 183 } 184 } else { 185 *minor_status = EINVAL; 186 return GSS_S_BAD_STATUS; 187 } 188 189 if (e < 0 || buf == NULL) { 190 *minor_status = ENOMEM; 191 return GSS_S_FAILURE; 192 } 193 194 *message_context = 0; 195 *minor_status = 0; 196 197 status_string->length = strlen(buf); 198 status_string->value = buf; 199 200 return GSS_S_COMPLETE; 201} 202