| 1 | /*
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| 2 | * Copyright (c) 2003 - 2005 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 "gsskrb5_locl.h"
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| 35 |
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| 36 | static krb5_error_code
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| 37 | check_compat(OM_uint32 *minor_status,
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| 38 | krb5_context context, krb5_const_principal name,
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| 39 | const char *option, krb5_boolean *compat,
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| 40 | krb5_boolean match_val)
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| 41 | {
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| 42 | krb5_error_code ret = 0;
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| 43 | char **p, **q;
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| 44 | krb5_principal match;
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| 45 |
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| 46 |
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| 47 | p = krb5_config_get_strings(context, NULL, "gssapi",
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| 48 | option, NULL);
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| 49 | if(p == NULL)
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| 50 | return 0;
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| 51 |
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| 52 | match = NULL;
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| 53 | for(q = p; *q; q++) {
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| 54 | ret = krb5_parse_name(context, *q, &match);
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| 55 | if (ret)
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| 56 | break;
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| 57 |
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| 58 | if (krb5_principal_match(context, name, match)) {
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| 59 | *compat = match_val;
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| 60 | break;
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| 61 | }
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| 62 |
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| 63 | krb5_free_principal(context, match);
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| 64 | match = NULL;
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| 65 | }
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| 66 | if (match)
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| 67 | krb5_free_principal(context, match);
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| 68 | krb5_config_free_strings(p);
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| 69 |
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| 70 | if (ret) {
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| 71 | if (minor_status)
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| 72 | *minor_status = ret;
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| 73 | return GSS_S_FAILURE;
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| 74 | }
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| 75 |
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| 76 | return 0;
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| 77 | }
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| 78 |
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| 79 | /*
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| 80 | * ctx->ctx_id_mutex is assumed to be locked
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| 81 | */
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| 82 |
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| 83 | OM_uint32
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| 84 | _gss_DES3_get_mic_compat(OM_uint32 *minor_status,
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| 85 | gsskrb5_ctx ctx,
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| 86 | krb5_context context)
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| 87 | {
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| 88 | krb5_boolean use_compat = FALSE;
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| 89 | OM_uint32 ret;
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| 90 |
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| 91 | if ((ctx->more_flags & COMPAT_OLD_DES3_SELECTED) == 0) {
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| 92 | ret = check_compat(minor_status, context, ctx->target,
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| 93 | "broken_des3_mic", &use_compat, TRUE);
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| 94 | if (ret)
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| 95 | return ret;
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| 96 | ret = check_compat(minor_status, context, ctx->target,
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| 97 | "correct_des3_mic", &use_compat, FALSE);
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| 98 | if (ret)
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| 99 | return ret;
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| 100 |
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| 101 | if (use_compat)
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| 102 | ctx->more_flags |= COMPAT_OLD_DES3;
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| 103 | ctx->more_flags |= COMPAT_OLD_DES3_SELECTED;
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| 104 | }
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| 105 | return 0;
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| 106 | }
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| 107 |
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| 108 | #if 0
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| 109 | OM_uint32
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| 110 | gss_krb5_compat_des3_mic(OM_uint32 *minor_status, gss_ctx_id_t ctx, int on)
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| 111 | {
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| 112 | *minor_status = 0;
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| 113 |
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| 114 | HEIMDAL_MUTEX_lock(&ctx->ctx_id_mutex);
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| 115 | if (on) {
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| 116 | ctx->more_flags |= COMPAT_OLD_DES3;
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| 117 | } else {
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| 118 | ctx->more_flags &= ~COMPAT_OLD_DES3;
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| 119 | }
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| 120 | ctx->more_flags |= COMPAT_OLD_DES3_SELECTED;
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| 121 | HEIMDAL_MUTEX_unlock(&ctx->ctx_id_mutex);
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| 122 |
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| 123 | return 0;
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| 124 | }
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| 125 | #endif
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