1 /* 2 * Copyright (c) 1998 - 2006 Kungliga Tekniska H�gskolan 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 "krb5/gsskrb5_locl.h" 35 36 RCSID("$Id: display_status.c 19031 2006-11-13 18:02:57Z lha $"); 37 38 static const char * 39 calling_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 58 static const char * 59 routine_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 94 static const char * 95 supplementary_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 } 113 114 void 115 _gsskrb5_clear_status (void) 116 { 117 krb5_context context; 118 119 if (_gsskrb5_init (&context) != 0) 120 return; 121 krb5_clear_error_string(context); 122 } 123 124 void 125 _gsskrb5_set_status (const char *fmt, ...) 126 { 127 krb5_context context; 128 va_list args; 129 char *str; 130 131 if (_gsskrb5_init (&context) != 0) 132 return; 133 134 va_start(args, fmt); 135 vasprintf(&str, fmt, args); 136 va_end(args); 137 if (str) { 138 krb5_set_error_string(context, str); 139 free(str); 140 } 141 } 142 143 OM_uint32 _gsskrb5_display_status 144 (OM_uint32 *minor_status, 145 OM_uint32 status_value, 146 int status_type, 147 const gss_OID mech_type, 148 OM_uint32 *message_context, 149 gss_buffer_t status_string) 150 { 151 krb5_context context; 152 char *buf; 153 154 GSSAPI_KRB5_INIT (&context); 155 156 status_string->length = 0; 157 status_string->value = NULL; 158 159 if (gss_oid_equal(mech_type, GSS_C_NO_OID) == 0 && 160 gss_oid_equal(mech_type, GSS_KRB5_MECHANISM) == 0) { 161 *minor_status = 0; 162 return GSS_C_GSS_CODE; 163 } 164 165 if (status_type == GSS_C_GSS_CODE) { 166 if (GSS_SUPPLEMENTARY_INFO(status_value)) 167 asprintf(&buf, "%s", 168 supplementary_error(GSS_SUPPLEMENTARY_INFO(status_value))); 169 else 170 asprintf (&buf, "%s %s", 171 calling_error(GSS_CALLING_ERROR(status_value)), 172 routine_error(GSS_ROUTINE_ERROR(status_value))); 173 } else if (status_type == GSS_C_MECH_CODE) { 174 buf = krb5_get_error_string(context); 175 if (buf == NULL) { 176 const char *tmp = krb5_get_err_text (context, status_value); 177 if (tmp == NULL) 178 asprintf(&buf, "unknown mech error-code %u", 179 (unsigned)status_value); 180 else 181 buf = strdup(tmp); 182 } 183 } else { 184 *minor_status = EINVAL; 185 return GSS_S_BAD_STATUS; 186 } 187 188 if (buf == NULL) { 189 *minor_status = ENOMEM; 190 return GSS_S_FAILURE; 191 } 192 193 *message_context = 0; 194 *minor_status = 0; 195 196 status_string->length = strlen(buf); 197 status_string->value = buf; 198 199 return GSS_S_COMPLETE; 200 } 201