1 files changed, 237 insertions, 0 deletions

diff --git a/src/lib/libcrypto/x509/x509_akey.c b/src/lib/libcrypto/x509/x509_akey.c
new file mode 100644
index 0000000000..f8c7113350
--- /dev/null
+++ b/src/lib/libcrypto/x509/x509_akey.c
@@ -0,0 +1,237 @@
+/* $OpenBSD: x509_akey.c,v 1.1 2020/06/04 15:19:31 jsing Exp $ */
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  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. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED 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 OpenSSL PROJECT OR
+ * ITS 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.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl/asn1.h>
+#include <openssl/asn1t.h>
+#include <openssl/conf.h>
+#include <openssl/err.h>
+#include <openssl/x509v3.h>
+
+static STACK_OF(CONF_VALUE) *i2v_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,
+    AUTHORITY_KEYID *akeyid, STACK_OF(CONF_VALUE) *extlist);
+static AUTHORITY_KEYID *v2i_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,
+    X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *values);
+
+const X509V3_EXT_METHOD v3_akey_id = {
+        .ext_nid = NID_authority_key_identifier,
+        .ext_flags = X509V3_EXT_MULTILINE,
+        .it = &AUTHORITY_KEYID_it,
+        .ext_new = NULL,
+        .ext_free = NULL,
+        .d2i = NULL,
+        .i2d = NULL,
+        .i2s = NULL,
+        .s2i = NULL,
+        .i2v = (X509V3_EXT_I2V)i2v_AUTHORITY_KEYID,
+        .v2i = (X509V3_EXT_V2I)v2i_AUTHORITY_KEYID,
+        .i2r = NULL,
+        .r2i = NULL,
+        .usr_data = NULL,
+};
+
+static STACK_OF(CONF_VALUE) *
+i2v_AUTHORITY_KEYID(X509V3_EXT_METHOD *method, AUTHORITY_KEYID *akeyid,
+    STACK_OF(CONF_VALUE) *extlist)
+{
+        STACK_OF(CONF_VALUE) *free_extlist = NULL;
+        char *tmpstr = NULL;
+
+        if (extlist == NULL) {
+                if ((free_extlist = extlist = sk_CONF_VALUE_new_null()) == NULL)
+                        return NULL;
+        }
+
+        if (akeyid->keyid != NULL) {
+                if ((tmpstr = hex_to_string(akeyid->keyid->data,
+                    akeyid->keyid->length)) == NULL)
+                        goto err;
+                if (!X509V3_add_value("keyid", tmpstr, &extlist))
+                        goto err;
+                free(tmpstr);
+                tmpstr = NULL;
+        }
+
+        if (akeyid->issuer != NULL) {
+                if ((extlist = i2v_GENERAL_NAMES(NULL, akeyid->issuer,
+                    extlist)) == NULL)
+                        goto err;
+        }
+
+        if (akeyid->serial != NULL) {
+                if ((tmpstr = hex_to_string(akeyid->serial->data,
+                    akeyid->serial->length)) == NULL)
+                        goto err;
+                if (!X509V3_add_value("serial", tmpstr, &extlist))
+                        goto err;
+                free(tmpstr);
+                tmpstr = NULL;
+        }
+
+        if (sk_CONF_VALUE_num(extlist) <= 0)
+                goto err;
+
+        return extlist;
+
+ err:
+        free(tmpstr);
+        sk_CONF_VALUE_pop_free(free_extlist, X509V3_conf_free);
+
+        return NULL;
+}
+
+/*
+ * Currently two options:
+ * keyid: use the issuers subject keyid, the value 'always' means its is
+ * an error if the issuer certificate doesn't have a key id.
+ * issuer: use the issuers cert issuer and serial number. The default is
+ * to only use this if keyid is not present. With the option 'always'
+ * this is always included.
+ */
+static AUTHORITY_KEYID *
+v2i_AUTHORITY_KEYID(X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
+    STACK_OF(CONF_VALUE) *values)
+{
+        char keyid = 0, issuer = 0;
+        int i;
+        CONF_VALUE *cnf;
+        ASN1_OCTET_STRING *ikeyid = NULL;
+        X509_NAME *isname = NULL;
+        STACK_OF(GENERAL_NAME) *gens = NULL;
+        GENERAL_NAME *gen = NULL;
+        ASN1_INTEGER *serial = NULL;
+        X509_EXTENSION *ext;
+        X509 *cert;
+        AUTHORITY_KEYID *akeyid = NULL;
+
+        for (i = 0; i < sk_CONF_VALUE_num(values); i++) {
+                cnf = sk_CONF_VALUE_value(values, i);
+                if (!strcmp(cnf->name, "keyid")) {
+                        keyid = 1;
+                        if (cnf->value && !strcmp(cnf->value, "always"))
+                                keyid = 2;
+                } else if (!strcmp(cnf->name, "issuer")) {
+                        issuer = 1;
+                        if (cnf->value && !strcmp(cnf->value, "always"))
+                                issuer = 2;
+                } else {
+                        X509V3error(X509V3_R_UNKNOWN_OPTION);
+                        ERR_asprintf_error_data("name=%s", cnf->name);
+                        return NULL;
+                }
+        }
+
+        if (!ctx || !ctx->issuer_cert) {
+                if (ctx && (ctx->flags == CTX_TEST))
+                        return AUTHORITY_KEYID_new();
+                X509V3error(X509V3_R_NO_ISSUER_CERTIFICATE);
+                return NULL;
+        }
+
+        cert = ctx->issuer_cert;
+
+        if (keyid) {
+                i = X509_get_ext_by_NID(cert, NID_subject_key_identifier, -1);
+                if ((i >= 0)  && (ext = X509_get_ext(cert, i)))
+                        ikeyid = X509V3_EXT_d2i(ext);
+                if (keyid == 2 && !ikeyid) {
+                        X509V3error(X509V3_R_UNABLE_TO_GET_ISSUER_KEYID);
+                        return NULL;
+                }
+        }
+
+        if ((issuer && !ikeyid) || (issuer == 2)) {
+                isname = X509_NAME_dup(X509_get_issuer_name(cert));
+                serial = ASN1_INTEGER_dup(X509_get_serialNumber(cert));
+                if (!isname || !serial) {
+                        X509V3error(X509V3_R_UNABLE_TO_GET_ISSUER_DETAILS);
+                        goto err;
+                }
+        }
+
+        if (!(akeyid = AUTHORITY_KEYID_new()))
+                goto err;
+
+        if (isname) {
+                if (!(gens = sk_GENERAL_NAME_new_null()) ||
+                    !(gen = GENERAL_NAME_new()) ||
+                    !sk_GENERAL_NAME_push(gens, gen)) {
+                        X509V3error(ERR_R_MALLOC_FAILURE);
+                        goto err;
+                }
+                gen->type = GEN_DIRNAME;
+                gen->d.dirn = isname;
+        }
+
+        akeyid->issuer = gens;
+        akeyid->serial = serial;
+        akeyid->keyid = ikeyid;
+
+        return akeyid;
+
+ err:
+        AUTHORITY_KEYID_free(akeyid);
+        GENERAL_NAME_free(gen);
+        sk_GENERAL_NAME_free(gens);
+        X509_NAME_free(isname);
+        ASN1_INTEGER_free(serial);
+        ASN1_OCTET_STRING_free(ikeyid);
+        return NULL;
+}