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Add a test program for krb5_copy_context
This test program isn't completely proof against the kind of mistakes we've made with krb5_copy_context in the past, but it at least exercises krb5_copy_context and can detect some kinds of bugs. (back ported from commit b78c3c8) ticket: 7845
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/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */ | ||
/* lib/krb5/krb/t_copy_context.C - Test program for krb5_copy_context */ | ||
/* | ||
* Copyright (C) 2013 by the Massachusetts Institute of Technology. | ||
* All rights reserved. | ||
* | ||
* Redistribution and use in source and binary forms, with or without | ||
* modification, are permitted provided that the following conditions | ||
* are met: | ||
* | ||
* * Redistributions of source code must retain the above copyright | ||
* notice, this list of conditions and the following disclaimer. | ||
* | ||
* * Redistributions in binary form must reproduce the above copyright | ||
* notice, this list of conditions and the following disclaimer in | ||
* the documentation and/or other materials provided with the | ||
* distribution. | ||
* | ||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | ||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | ||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS | ||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE | ||
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, | ||
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | ||
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | ||
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | ||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | ||
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | ||
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | ||
* OF THE POSSIBILITY OF SUCH DAMAGE. | ||
*/ | ||
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#include <k5-int.h> | ||
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static void | ||
trace(krb5_context ctx, const struct krb5_trace_info *info, void *data) | ||
{ | ||
} | ||
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static void | ||
check(int cond) | ||
{ | ||
if (!cond) | ||
abort(); | ||
} | ||
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static void | ||
compare_string(const char *str1, const char *str2) | ||
{ | ||
check((str1 == NULL) == (str2 == NULL)); | ||
if (str1 != NULL) | ||
check(strcmp(str1, str2) == 0); | ||
} | ||
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static void | ||
compare_etypes(krb5_enctype *list1, krb5_enctype *list2) | ||
{ | ||
check((list1 == NULL) == (list2 == NULL)); | ||
if (list1 == NULL) | ||
return; | ||
while (*list1 != ENCTYPE_NULL && *list1 == *list2) | ||
list1++, list2++; | ||
check(*list1 == *list2); | ||
} | ||
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/* Check that the context c is a valid copy of the reference context r. */ | ||
static void | ||
check_context(krb5_context c, krb5_context r) | ||
{ | ||
int i; | ||
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/* Check fields which should have been propagated from r. */ | ||
compare_etypes(c->in_tkt_etypes, r->in_tkt_etypes); | ||
compare_etypes(c->tgs_etypes, r->tgs_etypes); | ||
check(c->os_context.time_offset == r->os_context.time_offset); | ||
check(c->os_context.usec_offset == r->os_context.usec_offset); | ||
check(c->os_context.os_flags == r->os_context.os_flags); | ||
compare_string(c->os_context.default_ccname, r->os_context.default_ccname); | ||
check(c->clockskew == r->clockskew); | ||
check(c->kdc_req_sumtype == r->kdc_req_sumtype); | ||
check(c->default_ap_req_sumtype == r->default_ap_req_sumtype); | ||
check(c->default_safe_sumtype == r->default_safe_sumtype); | ||
check(c->kdc_default_options == r->kdc_default_options); | ||
check(c->library_options == r->library_options); | ||
check(c->profile_secure == r->profile_secure); | ||
check(c->fcc_default_format == r->fcc_default_format); | ||
check(c->udp_pref_limit == r->udp_pref_limit); | ||
check(c->use_conf_ktypes == r->use_conf_ktypes); | ||
check(c->allow_weak_crypto == r->allow_weak_crypto); | ||
check(c->ignore_acceptor_hostname == r->ignore_acceptor_hostname); | ||
compare_string(c->plugin_base_dir, r->plugin_base_dir); | ||
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/* Check fields which don't propagate. */ | ||
check(c->dal_handle == NULL); | ||
check(c->ser_ctx_count == 0); | ||
check(c->ser_ctx == NULL); | ||
check(c->prompt_types == NULL); | ||
check(c->libkrb5_plugins.files == NULL); | ||
check(c->preauth_context == NULL); | ||
check(c->ccselect_handles == NULL); | ||
check(c->err.code == 0); | ||
check(c->err.msg == NULL); | ||
check(c->kdblog_context == NULL); | ||
check(c->trace_callback == NULL); | ||
check(c->trace_callback_data == NULL); | ||
for (i = 0; i < PLUGIN_NUM_INTERFACES; i++) { | ||
check(c->plugins[i].modules == NULL); | ||
check(!c->plugins[i].configured); | ||
} | ||
} | ||
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int | ||
main(int argc, char **argv) | ||
{ | ||
krb5_context ctx, ctx2; | ||
krb5_plugin_initvt_fn *mods; | ||
const krb5_enctype etypes1[] = { ENCTYPE_DES3_CBC_SHA1, 0 }; | ||
const krb5_enctype etypes2[] = { ENCTYPE_AES128_CTS_HMAC_SHA1_96, | ||
ENCTYPE_AES256_CTS_HMAC_SHA1_96, 0 }; | ||
krb5_prompt_type ptypes[] = { KRB5_PROMPT_TYPE_PASSWORD }; | ||
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/* Copy a default context and verify the result. */ | ||
check(krb5_init_context(&ctx) == 0); | ||
check(krb5_copy_context(ctx, &ctx2) == 0); | ||
check_context(ctx2, ctx); | ||
krb5_free_context(ctx2); | ||
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/* Set non-default values for all of the propagated fields in ctx. */ | ||
ctx->allow_weak_crypto = TRUE; | ||
check(krb5_set_default_in_tkt_ktypes(ctx, etypes1) == 0); | ||
check(krb5_set_default_tgs_enctypes(ctx, etypes2) == 0); | ||
check(krb5_set_debugging_time(ctx, 1234, 5678) == 0); | ||
check(krb5_cc_set_default_name(ctx, "defccname") == 0); | ||
check(krb5_set_default_realm(ctx, "defrealm") == 0); | ||
ctx->clockskew = 18; | ||
ctx->kdc_req_sumtype = CKSUMTYPE_NIST_SHA; | ||
ctx->default_ap_req_sumtype = CKSUMTYPE_HMAC_SHA1_96_AES128; | ||
ctx->default_safe_sumtype = CKSUMTYPE_HMAC_SHA1_96_AES256; | ||
ctx->kdc_default_options = KDC_OPT_FORWARDABLE; | ||
ctx->library_options = 0; | ||
ctx->profile_secure = TRUE; | ||
ctx->udp_pref_limit = 2345; | ||
ctx->use_conf_ktypes = TRUE; | ||
ctx->ignore_acceptor_hostname = TRUE; | ||
free(ctx->plugin_base_dir); | ||
check((ctx->plugin_base_dir = strdup("/a/b/c/d")) != NULL); | ||
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/* Also set some of the non-propagated fields. */ | ||
ctx->prompt_types = ptypes; | ||
check(k5_plugin_load_all(ctx, PLUGIN_INTERFACE_PWQUAL, &mods) == 0); | ||
k5_plugin_free_modules(ctx, mods); | ||
krb5_set_error_message(ctx, ENOMEM, "nooooooooo"); | ||
krb5_set_trace_callback(ctx, trace, ctx); | ||
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/* Copy the intentionally messy context and verify the result. */ | ||
check(krb5_copy_context(ctx, &ctx2) == 0); | ||
check_context(ctx2, ctx); | ||
krb5_free_context(ctx2); | ||
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krb5_free_context(ctx); | ||
return 0; | ||
} |