Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 149 insertions, 0 deletions

diff --git a/third_party/heimdal/kcm/acquire.c b/third_party/heimdal/kcm/acquire.c
new file mode 100644
index 0000000..a5450c0
--- /dev/null
+++ b/third_party/heimdal/kcm/acquire.c
@@ -0,0 +1,149 @@
+/*
+ * Copyright (c) 2005, PADL Software Pty Ltd.
+ * 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 PADL Software 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 PADL SOFTWARE 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 PADL SOFTWARE 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 "kcm_locl.h"
+
+/*
+ * Get a new ticket using a keytab/cached key and swap it into
+ * an existing redentials cache
+ */
+
+krb5_error_code
+kcm_ccache_acquire(krb5_context context,
+		   kcm_ccache ccache,
+		   krb5_creds **credp)
+{
+    krb5_error_code ret = 0;
+    krb5_creds cred;
+    krb5_const_realm realm;
+    krb5_get_init_creds_opt *opt = NULL;
+    krb5_ccache_data ccdata;
+    char *in_tkt_service = NULL;
+    const char *estr;
+
+    *credp = NULL;
+    memset(&cred, 0, sizeof(cred));
+
+    KCM_ASSERT_VALID(ccache);
+
+    /* We need a cached key or keytab to acquire credentials */
+    if (ccache->flags & KCM_FLAGS_USE_CACHED_KEY) {
+	if (ccache->key.keyblock.keyvalue.length == 0)
+	    krb5_abortx(context,
+			"kcm_ccache_acquire: KCM_FLAGS_USE_CACHED_KEY without key");
+    } else if (ccache->flags & KCM_FLAGS_USE_KEYTAB) {
+	if (ccache->key.keytab == NULL)
+	    krb5_abortx(context,
+			"kcm_ccache_acquire: KCM_FLAGS_USE_KEYTAB without keytab");
+    } else {
+	kcm_log(0, "Cannot acquire initial credentials for cache %s without key",
+		ccache->name);
+	return KRB5_FCC_INTERNAL;
+    }
+
+    HEIMDAL_MUTEX_lock(&ccache->mutex);
+
+    /* Fake up an internal ccache */
+    kcm_internal_ccache(context, ccache, &ccdata);
+
+    /* Now, actually acquire the creds */
+    if (ccache->server != NULL) {
+	ret = krb5_unparse_name(context, ccache->server, &in_tkt_service);
+	if (ret) {
+	    estr = krb5_get_error_message(context, ret);
+	    kcm_log(0, "Failed to unparse service principal name for cache %s: %s",
+		    ccache->name, estr);
+	    krb5_free_error_message(context, estr);
+	    goto out;
+	}
+    }
+
+    realm = krb5_principal_get_realm(context, ccache->client);
+
+    ret = krb5_get_init_creds_opt_alloc(context, &opt);
+    if (ret)
+	goto out;
+    krb5_get_init_creds_opt_set_default_flags(context, "kcm", realm, opt);
+    if (ccache->tkt_life != 0)
+	krb5_get_init_creds_opt_set_tkt_life(opt, ccache->tkt_life);
+    if (ccache->renew_life != 0)
+	krb5_get_init_creds_opt_set_renew_life(opt, ccache->renew_life);
+
+    if (ccache->flags & KCM_FLAGS_USE_CACHED_KEY) {
+	ret = krb5_get_init_creds_keyblock(context,
+					   &cred,
+					   ccache->client,
+					   &ccache->key.keyblock,
+					   0,
+					   in_tkt_service,
+					   opt);
+    } else {
+	/* loosely based on lib/krb5/init_creds_pw.c */
+	ret = krb5_get_init_creds_keytab(context,
+					 &cred,
+					 ccache->client,
+					 ccache->key.keytab,
+					 0,
+					 in_tkt_service,
+					 opt);
+    }
+
+    if (ret) {
+	estr = krb5_get_error_message(context, ret);
+	kcm_log(0, "Failed to acquire credentials for cache %s: %s",
+		ccache->name, estr);
+	krb5_free_error_message(context, estr);
+	goto out;
+    }
+
+    /* Swap them in */
+    kcm_ccache_remove_creds_internal(context, ccache);
+
+    ret = kcm_ccache_store_cred_internal(context, ccache, &cred, 0, credp);
+    if (ret) {
+	estr = krb5_get_error_message(context, ret);
+	kcm_log(0, "Failed to store credentials for cache %s: %s",
+		ccache->name, estr);
+	krb5_free_error_message(context, estr);
+	krb5_free_cred_contents(context, &cred);
+	goto out;
+    }
+
+out:
+    free(in_tkt_service);
+    if (opt)
+	krb5_get_init_creds_opt_free(context, opt);
+
+    HEIMDAL_MUTEX_unlock(&ccache->mutex);
+
+    return ret;
+}