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-rw-r--r--third_party/heimdal/lib/krb5/creds.c282
1 files changed, 282 insertions, 0 deletions
diff --git a/third_party/heimdal/lib/krb5/creds.c b/third_party/heimdal/lib/krb5/creds.c
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+++ b/third_party/heimdal/lib/krb5/creds.c
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+/*
+ * Copyright (c) 1997 - 2005 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. 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.
+ *
+ * 3. Neither the name of the Institute nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE 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 INSTITUTE 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.
+ */
+
+#include "krb5_locl.h"
+
+/**
+ * Free content of krb5_creds.
+ *
+ * @param context Kerberos 5 context.
+ * @param c krb5_creds to free.
+ *
+ * @return Returns 0 to indicate success. Otherwise an kerberos et
+ * error code is returned, see krb5_get_error_message().
+ *
+ * @ingroup krb5
+ */
+
+KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
+krb5_free_cred_contents (krb5_context context, krb5_creds *c)
+{
+ krb5_free_principal (context, c->client);
+ c->client = NULL;
+ krb5_free_principal (context, c->server);
+ c->server = NULL;
+ krb5_free_keyblock_contents (context, &c->session);
+ krb5_data_free (&c->ticket);
+ krb5_data_free (&c->second_ticket);
+ free_AuthorizationData (&c->authdata);
+ krb5_free_addresses (context, &c->addresses);
+ memset(c, 0, sizeof(*c));
+ return 0;
+}
+
+/**
+ * Copy content of krb5_creds.
+ *
+ * @param context Kerberos 5 context.
+ * @param incred source credential
+ * @param c destination credential, free with krb5_free_cred_contents().
+ *
+ * @return Returns 0 to indicate success. Otherwise an kerberos et
+ * error code is returned, see krb5_get_error_message().
+ *
+ * @ingroup krb5
+ */
+
+KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
+krb5_copy_creds_contents (krb5_context context,
+ const krb5_creds *incred,
+ krb5_creds *c)
+{
+ krb5_error_code ret;
+
+ memset(c, 0, sizeof(*c));
+ ret = krb5_copy_principal (context, incred->client, &c->client);
+ if (ret)
+ goto fail;
+ ret = krb5_copy_principal (context, incred->server, &c->server);
+ if (ret)
+ goto fail;
+ ret = krb5_copy_keyblock_contents (context, &incred->session, &c->session);
+ if (ret)
+ goto fail;
+ c->times = incred->times;
+ ret = krb5_data_copy (&c->ticket,
+ incred->ticket.data,
+ incred->ticket.length);
+ if (ret)
+ goto fail;
+ ret = krb5_data_copy (&c->second_ticket,
+ incred->second_ticket.data,
+ incred->second_ticket.length);
+ if (ret)
+ goto fail;
+ ret = copy_AuthorizationData(&incred->authdata, &c->authdata);
+ if (ret)
+ goto fail;
+ ret = krb5_copy_addresses (context,
+ &incred->addresses,
+ &c->addresses);
+ if (ret)
+ goto fail;
+ c->flags = incred->flags;
+ return 0;
+
+fail:
+ krb5_free_cred_contents (context, c);
+ return ret;
+}
+
+/**
+ * Copy krb5_creds.
+ *
+ * @param context Kerberos 5 context.
+ * @param incred source credential
+ * @param outcred destination credential, free with krb5_free_creds().
+ *
+ * @return Returns 0 to indicate success. Otherwise an kerberos et
+ * error code is returned, see krb5_get_error_message().
+ *
+ * @ingroup krb5
+ */
+
+KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
+krb5_copy_creds (krb5_context context,
+ const krb5_creds *incred,
+ krb5_creds **outcred)
+{
+ krb5_creds *c;
+
+ c = calloc(1, sizeof(*c));
+ if (c == NULL)
+ return krb5_enomem(context);
+ *outcred = c;
+ return krb5_copy_creds_contents (context, incred, c);
+}
+
+/**
+ * Free krb5_creds.
+ *
+ * @param context Kerberos 5 context.
+ * @param c krb5_creds to free.
+ *
+ * @return Returns 0 to indicate success. Otherwise an kerberos et
+ * error code is returned, see krb5_get_error_message().
+ *
+ * @ingroup krb5
+ */
+
+KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
+krb5_free_creds (krb5_context context, krb5_creds *c)
+{
+ if (c != NULL)
+ krb5_free_cred_contents(context, c);
+ free(c);
+ return 0;
+}
+
+/* XXX this do not belong here */
+static krb5_boolean
+krb5_times_equal(const krb5_times *a, const krb5_times *b)
+{
+ return a->starttime == b->starttime &&
+ a->authtime == b->authtime &&
+ a->endtime == b->endtime &&
+ a->renew_till == b->renew_till;
+}
+
+/**
+ * Return TRUE if `mcreds' and `creds' are equal (`whichfields'
+ * determines what equal means).
+ *
+ *
+ * The following flags, set in whichfields affects the comparison:
+ * - KRB5_TC_MATCH_SRV_NAMEONLY Consider all realms equal when comparing the service principal.
+ * - KRB5_TC_MATCH_KEYTYPE Compare enctypes.
+ * - KRB5_TC_MATCH_FLAGS_EXACT Make sure that the ticket flags are identical.
+ * - KRB5_TC_MATCH_FLAGS Make sure that all ticket flags set in mcreds are also present in creds .
+ * - KRB5_TC_MATCH_TIMES_EXACT Compares the ticket times exactly.
+ * - KRB5_TC_MATCH_TIMES Compares only the expiration times of the creds.
+ * - KRB5_TC_MATCH_AUTHDATA Compares the authdata fields.
+ * - KRB5_TC_MATCH_2ND_TKT Compares the second tickets (used by user-to-user authentication).
+ * - KRB5_TC_MATCH_IS_SKEY Compares the existence of the second ticket.
+ *
+ * @param context Kerberos 5 context.
+ * @param whichfields which fields to compare.
+ * @param mcreds cred to compare with.
+ * @param creds cred to compare with.
+ *
+ * @return return TRUE if mcred and creds are equal, FALSE if not.
+ *
+ * @ingroup krb5
+ */
+
+KRB5_LIB_FUNCTION krb5_boolean KRB5_LIB_CALL
+krb5_compare_creds(krb5_context context, krb5_flags whichfields,
+ const krb5_creds * mcreds, const krb5_creds * creds)
+{
+ krb5_boolean match = TRUE;
+
+ if (match && mcreds->server) {
+ if (whichfields & (KRB5_TC_DONT_MATCH_REALM | KRB5_TC_MATCH_SRV_NAMEONLY))
+ match = krb5_principal_compare_any_realm (context, mcreds->server,
+ creds->server);
+ else
+ match = krb5_principal_compare (context, mcreds->server,
+ creds->server);
+ }
+
+ if (match && mcreds->client) {
+ if(whichfields & KRB5_TC_DONT_MATCH_REALM)
+ match = krb5_principal_compare_any_realm (context, mcreds->client,
+ creds->client);
+ else
+ match = krb5_principal_compare (context, mcreds->client,
+ creds->client);
+ }
+
+ if (match && (whichfields & KRB5_TC_MATCH_KEYTYPE))
+ match = mcreds->session.keytype == creds->session.keytype;
+
+ if (match && (whichfields & KRB5_TC_MATCH_FLAGS_EXACT))
+ match = mcreds->flags.i == creds->flags.i;
+
+ if (match && (whichfields & KRB5_TC_MATCH_FLAGS))
+ match = (creds->flags.i & mcreds->flags.i) == mcreds->flags.i;
+
+ if (match && (whichfields & KRB5_TC_MATCH_TIMES_EXACT))
+ match = krb5_times_equal(&mcreds->times, &creds->times);
+
+ if (match && (whichfields & KRB5_TC_MATCH_TIMES))
+ /* compare only expiration times */
+ match = (mcreds->times.renew_till <= creds->times.renew_till) &&
+ (mcreds->times.endtime <= creds->times.endtime);
+
+ if (match && (whichfields & KRB5_TC_MATCH_AUTHDATA)) {
+ unsigned int i;
+ if(mcreds->authdata.len != creds->authdata.len)
+ match = FALSE;
+ else
+ for(i = 0; match && i < mcreds->authdata.len; i++)
+ match = (mcreds->authdata.val[i].ad_type ==
+ creds->authdata.val[i].ad_type) &&
+ (krb5_data_cmp(&mcreds->authdata.val[i].ad_data,
+ &creds->authdata.val[i].ad_data) == 0);
+ }
+ if (match && (whichfields & KRB5_TC_MATCH_2ND_TKT))
+ match = (krb5_data_cmp(&mcreds->second_ticket, &creds->second_ticket) == 0);
+
+ if (match && (whichfields & KRB5_TC_MATCH_IS_SKEY))
+ match = ((mcreds->second_ticket.length == 0) ==
+ (creds->second_ticket.length == 0));
+
+ return match;
+}
+
+/**
+ * Returns the ticket flags for the credentials in creds.
+ * See also krb5_ticket_get_flags().
+ *
+ * @param creds credential to get ticket flags from
+ *
+ * @return ticket flags
+ *
+ * @ingroup krb5
+ */
+
+KRB5_LIB_FUNCTION unsigned long KRB5_LIB_CALL
+krb5_creds_get_ticket_flags(krb5_creds *creds)
+{
+ return TicketFlags2int(creds->flags.b);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-23 15:49:14 +0000