Join the x509 and x509v3 directories

This has been long overdue.

Note that this does not join the X509 and X509V3 error modules, that
will be too many macro changes at this stage.

Fixes #8919

Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/8925)

1 files changed, 106 insertions, 0 deletions

diff --git a/crypto/x509/v3_skey.c b/crypto/x509/v3_skey.c
new file mode 100644
index 0000000000..f8a780d916
--- /dev/null
+++ b/crypto/x509/v3_skey.c
@@ -0,0 +1,106 @@
+/*
+ * Copyright 1999-2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the Apache License 2.0 (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#include <stdio.h>
+#include "internal/cryptlib.h"
+#include <openssl/x509v3.h>
+#include "internal/x509_int.h"
+#include "ext_dat.h"
+
+static ASN1_OCTET_STRING *s2i_skey_id(X509V3_EXT_METHOD *method,
+                                      X509V3_CTX *ctx, char *str);
+const X509V3_EXT_METHOD v3_skey_id = {
+    NID_subject_key_identifier, 0, ASN1_ITEM_ref(ASN1_OCTET_STRING),
+    0, 0, 0, 0,
+    (X509V3_EXT_I2S)i2s_ASN1_OCTET_STRING,
+    (X509V3_EXT_S2I)s2i_skey_id,
+    0, 0, 0, 0,
+    NULL
+};
+
+char *i2s_ASN1_OCTET_STRING(X509V3_EXT_METHOD *method,
+                            const ASN1_OCTET_STRING *oct)
+{
+    return OPENSSL_buf2hexstr(oct->data, oct->length);
+}
+
+ASN1_OCTET_STRING *s2i_ASN1_OCTET_STRING(X509V3_EXT_METHOD *method,
+                                         X509V3_CTX *ctx, const char *str)
+{
+    ASN1_OCTET_STRING *oct;
+    long length;
+
+    if ((oct = ASN1_OCTET_STRING_new()) == NULL) {
+        X509V3err(X509V3_F_S2I_ASN1_OCTET_STRING, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+
+    if ((oct->data = OPENSSL_hexstr2buf(str, &length)) == NULL) {
+        ASN1_OCTET_STRING_free(oct);
+        return NULL;
+    }
+
+    oct->length = length;
+
+    return oct;
+
+}
+
+static ASN1_OCTET_STRING *s2i_skey_id(X509V3_EXT_METHOD *method,
+                                      X509V3_CTX *ctx, char *str)
+{
+    ASN1_OCTET_STRING *oct;
+    X509_PUBKEY *pubkey;
+    const unsigned char *pk;
+    int pklen;
+    unsigned char pkey_dig[EVP_MAX_MD_SIZE];
+    unsigned int diglen;
+
+    if (strcmp(str, "hash"))
+        return s2i_ASN1_OCTET_STRING(method, ctx, str);
+
+    if ((oct = ASN1_OCTET_STRING_new()) == NULL) {
+        X509V3err(X509V3_F_S2I_SKEY_ID, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+
+    if (ctx && (ctx->flags == CTX_TEST))
+        return oct;
+
+    if (!ctx || (!ctx->subject_req && !ctx->subject_cert)) {
+        X509V3err(X509V3_F_S2I_SKEY_ID, X509V3_R_NO_PUBLIC_KEY);
+        goto err;
+    }
+
+    if (ctx->subject_req)
+        pubkey = ctx->subject_req->req_info.pubkey;
+    else
+        pubkey = ctx->subject_cert->cert_info.key;
+
+    if (pubkey == NULL) {
+        X509V3err(X509V3_F_S2I_SKEY_ID, X509V3_R_NO_PUBLIC_KEY);
+        goto err;
+    }
+
+    X509_PUBKEY_get0_param(NULL, &pk, &pklen, NULL, pubkey);
+
+    if (!EVP_Digest(pk, pklen, pkey_dig, &diglen, EVP_sha1(), NULL))
+        goto err;
+
+    if (!ASN1_OCTET_STRING_set(oct, pkey_dig, diglen)) {
+        X509V3err(X509V3_F_S2I_SKEY_ID, ERR_R_MALLOC_FAILURE);
+        goto err;
+    }
+
+    return oct;
+
+ err:
+    ASN1_OCTET_STRING_free(oct);
+    return NULL;
+}