| 1 | /*
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| 2 | * Copyright (c) 1997 - 2003 Kungliga Tekniska Högskolan
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| 3 | * (Royal Institute of Technology, Stockholm, Sweden).
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| 4 | * All rights reserved.
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| 5 | *
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| 6 | * Redistribution and use in source and binary forms, with or without
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| 7 | * modification, are permitted provided that the following conditions
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| 8 | * are met:
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| 9 | *
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| 10 | * 1. Redistributions of source code must retain the above copyright
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| 11 | * notice, this list of conditions and the following disclaimer.
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| 12 | *
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| 13 | * 2. Redistributions in binary form must reproduce the above copyright
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| 14 | * notice, this list of conditions and the following disclaimer in the
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| 15 | * documentation and/or other materials provided with the distribution.
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| 16 | *
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| 17 | * 3. Neither the name of the Institute nor the names of its contributors
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| 18 | * may be used to endorse or promote products derived from this software
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| 19 | * without specific prior written permission.
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| 20 | *
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| 21 | * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 31 | * SUCH DAMAGE.
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| 32 | */
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| 33 |
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| 34 | #include "krb5_locl.h"
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| 35 |
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| 36 | KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
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| 37 | krb5_mk_error(krb5_context context,
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| 38 | krb5_error_code error_code,
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| 39 | const char *e_text,
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| 40 | const krb5_data *e_data,
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| 41 | const krb5_principal client,
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| 42 | const krb5_principal server,
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| 43 | time_t *client_time,
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| 44 | int *client_usec,
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| 45 | krb5_data *reply)
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| 46 | {
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| 47 | const char *e_text2 = NULL;
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| 48 | KRB_ERROR msg;
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| 49 | krb5_timestamp sec;
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| 50 | int32_t usec;
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| 51 | size_t len;
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| 52 | krb5_error_code ret = 0;
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| 53 |
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| 54 | krb5_us_timeofday (context, &sec, &usec);
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| 55 |
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| 56 | memset(&msg, 0, sizeof(msg));
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| 57 | msg.pvno = 5;
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| 58 | msg.msg_type = krb_error;
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| 59 | msg.stime = sec;
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| 60 | msg.susec = usec;
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| 61 | msg.ctime = client_time;
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| 62 | msg.cusec = client_usec;
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| 63 | /* Make sure we only send `protocol' error codes */
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| 64 | if(error_code < KRB5KDC_ERR_NONE || error_code >= KRB5_ERR_RCSID) {
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| 65 | if(e_text == NULL)
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| 66 | e_text = e_text2 = krb5_get_error_message(context, error_code);
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| 67 | error_code = KRB5KRB_ERR_GENERIC;
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| 68 | }
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| 69 | msg.error_code = error_code - KRB5KDC_ERR_NONE;
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| 70 | if (e_text)
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| 71 | msg.e_text = rk_UNCONST(&e_text);
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| 72 | if (e_data)
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| 73 | msg.e_data = rk_UNCONST(e_data);
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| 74 | if(server){
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| 75 | msg.realm = server->realm;
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| 76 | msg.sname = server->name;
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| 77 | }else{
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| 78 | msg.realm = "<unspecified realm>";
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| 79 | }
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| 80 | if(client){
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| 81 | msg.crealm = &client->realm;
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| 82 | msg.cname = &client->name;
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| 83 | }
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| 84 |
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| 85 | ASN1_MALLOC_ENCODE(KRB_ERROR, reply->data, reply->length, &msg, &len, ret);
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| 86 | if (e_text2)
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| 87 | krb5_free_error_message(context, e_text2);
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| 88 | if (ret)
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| 89 | return ret;
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| 90 | if(reply->length != len)
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| 91 | krb5_abortx(context, "internal error in ASN.1 encoder");
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| 92 | return 0;
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| 93 | }
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