summaryrefslogtreecommitdiffstats
path: root/third_party/heimdal/kdc/ca.c
diff options
context:
space:
mode:
Diffstat (limited to 'third_party/heimdal/kdc/ca.c')
-rw-r--r--third_party/heimdal/kdc/ca.c133
1 files changed, 133 insertions, 0 deletions
diff --git a/third_party/heimdal/kdc/ca.c b/third_party/heimdal/kdc/ca.c
new file mode 100644
index 0000000..4402c44
--- /dev/null
+++ b/third_party/heimdal/kdc/ca.c
@@ -0,0 +1,133 @@
+/*
+ * Copyright (c) 2019 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 "kdc_locl.h"
+#include <hex.h>
+#include <rfc2459_asn1.h>
+#include "../lib/hx509/hx_locl.h"
+
+#include <stdarg.h>
+
+/*
+ * This file implements a singular utility function `kdc_issue_certificate()'
+ * for certificate issuance for kx509 and bx509, which takes a principal name,
+ * an `hx509_request' resulting from parsing a CSR and possibly adding
+ * SAN/EKU/KU extensions, the start/end times of request's authentication
+ * method, and whether to include a full certificate chain in the result.
+ */
+
+/*
+ * Get a configuration sub-tree for kx509 based on what's being requested and
+ * by whom.
+ *
+ * We have a number of cases:
+ *
+ * - default certificate (no CSR used, or no certificate extensions requested)
+ * - for client principals
+ * - for service principals
+ * - client certificate requested (CSR used and client-y SANs/EKUs requested)
+ * - server certificate requested (CSR used and server-y SANs/EKUs requested)
+ * - mixed client/server certificate requested (...)
+ */
+static krb5_error_code
+get_cf(krb5_context context,
+ const char *app_name,
+ krb5_log_facility *logf,
+ hx509_request req,
+ krb5_principal cprinc,
+ const krb5_config_binding **cf)
+{
+ krb5_error_code ret = ENOTSUP;
+ const char *realm = krb5_principal_get_realm(context, cprinc);
+
+ *cf = NULL;
+ if (strcmp(app_name, "kdc") == 0)
+ *cf = krb5_config_get_list(context, NULL, app_name, "realms", realm,
+ "kx509", NULL);
+ else
+ *cf = krb5_config_get_list(context, NULL, app_name, "realms", realm,
+ NULL);
+ if (*cf)
+ ret = 0;
+ if (ret) {
+ krb5_log_msg(context, logf, 3, NULL,
+ "No %s configuration for certification authority [%s] "
+ "realm %s -> kx509 -> ...", app_name,
+ strcmp(app_name, "bx509") == 0 ? "bx509" : "kx509",
+ realm);
+ krb5_set_error_message(context, KRB5KDC_ERR_POLICY,
+ "No %s configuration for certification authority [%s] "
+ "realm %s -> kx509 -> ...", app_name,
+ strcmp(app_name, "bx509") == 0 ? "bx509" : "kx509",
+ realm);
+ }
+ return ret;
+}
+
+/*
+ * Build a certifate for `principal' and its CSR.
+ */
+KDC_LIB_FUNCTION krb5_error_code KDC_LIB_CALL
+kdc_issue_certificate(krb5_context context,
+ const char *app_name,
+ krb5_log_facility *logf,
+ hx509_request req,
+ krb5_principal cprinc,
+ krb5_times *auth_times,
+ time_t req_life,
+ int send_chain,
+ hx509_certs *out)
+{
+ const krb5_config_binding *cf;
+ krb5_error_code ret = KRB5KDC_ERR_POLICY;
+ KRB5PrincipalName cprinc2;
+
+ *out = NULL;
+ cprinc2.principalName = cprinc->name;
+ cprinc2.realm = cprinc->realm;
+
+ /* Get configuration */
+ ret = get_cf(context, app_name, logf, req, cprinc, &cf);
+ if (ret == 0)
+ ret = _hx509_ca_issue_certificate(context->hx509ctx,
+ (const heim_config_binding *)cf,
+ logf, req, &cprinc2,
+ auth_times->starttime,
+ auth_times->endtime,
+ req_life,
+ send_chain,
+ out);
+ if (ret == EACCES)
+ ret = KRB5KDC_ERR_POLICY;
+ return ret;
+}