+#include "internal/cryptlib.h"
+#include <openssl/bn.h>
+#include <openssl/evp.h>
+#include <openssl/asn1.h>
+#include <openssl/asn1t.h>
+#include <openssl/x509.h>
+#include <openssl/objects.h>
+#include <openssl/buffer.h>
+#include <openssl/pem.h>
+
+X509_REQ *X509_to_X509_REQ(X509 *x, EVP_PKEY *pkey, const EVP_MD *md)
+{
+ X509_REQ *ret;
+ X509_REQ_INFO *ri;
+ int i;
+ EVP_PKEY *pktmp;
+
+ ret = X509_REQ_new();
+ if (ret == NULL) {
+ X509err(X509_F_X509_TO_X509_REQ, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+
+ ri = ret->req_info;
+
+ ri->version->length = 1;
+ ri->version->data = OPENSSL_malloc(1);
+ if (ri->version->data == NULL)
+ goto err;
+ ri->version->data[0] = 0; /* version == 0 */
+
+ if (!X509_REQ_set_subject_name(ret, X509_get_subject_name(x)))
+ goto err;
+
+ pktmp = X509_get_pubkey(x);
+ if (pktmp == NULL)
+ goto err;
+ i = X509_REQ_set_pubkey(ret, pktmp);
+ EVP_PKEY_free(pktmp);
+ if (!i)
+ goto err;
+
+ if (pkey != NULL) {
+ if (!X509_REQ_sign(ret, pkey, md))
+ goto err;
+ }
+ return (ret);
+ err:
+ X509_REQ_free(ret);
+ return (NULL);
+}
+
+EVP_PKEY *X509_REQ_get_pubkey(X509_REQ *req)
+{
+ if ((req == NULL) || (req->req_info == NULL))
+ return (NULL);
+ return (X509_PUBKEY_get(req->req_info->pubkey));
+}
+
+int X509_REQ_check_private_key(X509_REQ *x, EVP_PKEY *k)
+{
+ EVP_PKEY *xk = NULL;
+ int ok = 0;
+
+ xk = X509_REQ_get_pubkey(x);
+ switch (EVP_PKEY_cmp(xk, k)) {
+ case 1:
+ ok = 1;
+ break;
+ case 0:
+ X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY,
+ X509_R_KEY_VALUES_MISMATCH);
+ break;
+ case -1:
+ X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY, X509_R_KEY_TYPE_MISMATCH);
+ break;
+ case -2:
+#ifndef OPENSSL_NO_EC
+ if (k->type == EVP_PKEY_EC) {
+ X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY, ERR_R_EC_LIB);
+ break;
+ }
+#endif
+#ifndef OPENSSL_NO_DH
+ if (k->type == EVP_PKEY_DH) {
+ /* No idea */
+ X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY,
+ X509_R_CANT_CHECK_DH_KEY);
+ break;
+ }
+#endif
+ X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY, X509_R_UNKNOWN_KEY_TYPE);
+ }
+
+ EVP_PKEY_free(xk);
+ return (ok);
+}
+
+/*
+ * It seems several organisations had the same idea of including a list of
+ * extensions in a certificate request. There are at least two OIDs that are
+ * used and there may be more: so the list is configurable.
+ */
+
+static int ext_nid_list[] = { NID_ext_req, NID_ms_ext_req, NID_undef };
+
+static int *ext_nids = ext_nid_list;
+
+int X509_REQ_extension_nid(int req_nid)
+{
+ int i, nid;
+ for (i = 0;; i++) {
+ nid = ext_nids[i];
+ if (nid == NID_undef)
+ return 0;
+ else if (req_nid == nid)
+ return 1;
+ }
+}
+
+int *X509_REQ_get_extension_nids(void)
+{
+ return ext_nids;
+}
+
+void X509_REQ_set_extension_nids(int *nids)
+{
+ ext_nids = nids;
+}
+
+STACK_OF(X509_EXTENSION) *X509_REQ_get_extensions(X509_REQ *req)
+{
+ X509_ATTRIBUTE *attr;
+ ASN1_TYPE *ext = NULL;
+ int idx, *pnid;
+ const unsigned char *p;
+
+ if ((req == NULL) || (req->req_info == NULL) || !ext_nids)
+ return (NULL);
+ for (pnid = ext_nids; *pnid != NID_undef; pnid++) {
+ idx = X509_REQ_get_attr_by_NID(req, *pnid, -1);
+ if (idx == -1)
+ continue;
+ attr = X509_REQ_get_attr(req, idx);
+ ext = X509_ATTRIBUTE_get0_type(attr, 0);
+ break;
+ }
+ if (!ext || (ext->type != V_ASN1_SEQUENCE))
+ return NULL;
+ p = ext->value.sequence->data;
+ return (STACK_OF(X509_EXTENSION) *)
+ ASN1_item_d2i(NULL, &p, ext->value.sequence->length,
+ ASN1_ITEM_rptr(X509_EXTENSIONS));
+}
+
+/*
+ * Add a STACK_OF extensions to a certificate request: allow alternative OIDs
+ * in case we want to create a non standard one.
+ */
+
+int X509_REQ_add_extensions_nid(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts,
+ int nid)
+{
+ int extlen;
+ int rv = 0;
+ unsigned char *ext = NULL;
+ /* Generate encoding of extensions */
+ extlen = ASN1_item_i2d((ASN1_VALUE *)exts, &ext,
+ ASN1_ITEM_rptr(X509_EXTENSIONS));
+ if (extlen <= 0)
+ return 0;
+ rv = X509_REQ_add1_attr_by_NID(req, nid, V_ASN1_SEQUENCE, ext, extlen);
+ OPENSSL_free(ext);
+ return rv;
+}
+
+/* This is the normal usage: use the "official" OID */
+int X509_REQ_add_extensions(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts)
+{
+ return X509_REQ_add_extensions_nid(req, exts, NID_ext_req);
+}
+
+/* Request attribute functions */
+
+int X509_REQ_get_attr_count(const X509_REQ *req)
+{
+ return X509at_get_attr_count(req->req_info->attributes);
+}
+
+int X509_REQ_get_attr_by_NID(const X509_REQ *req, int nid, int lastpos)
+{
+ return X509at_get_attr_by_NID(req->req_info->attributes, nid, lastpos);
+}
+
+int X509_REQ_get_attr_by_OBJ(const X509_REQ *req, ASN1_OBJECT *obj,
+ int lastpos)
+{
+ return X509at_get_attr_by_OBJ(req->req_info->attributes, obj, lastpos);
+}
+
+X509_ATTRIBUTE *X509_REQ_get_attr(const X509_REQ *req, int loc)
+{
+ return X509at_get_attr(req->req_info->attributes, loc);
+}
+
+X509_ATTRIBUTE *X509_REQ_delete_attr(X509_REQ *req, int loc)
+{
+ return X509at_delete_attr(req->req_info->attributes, loc);
+}
+
+int X509_REQ_add1_attr(X509_REQ *req, X509_ATTRIBUTE *attr)
+{
+ if (X509at_add1_attr(&req->req_info->attributes, attr))
+ return 1;
+ return 0;
+}
+
+int X509_REQ_add1_attr_by_OBJ(X509_REQ *req,
+ const ASN1_OBJECT *obj, int type,
+ const unsigned char *bytes, int len)
+{
+ if (X509at_add1_attr_by_OBJ(&req->req_info->attributes, obj,
+ type, bytes, len))
+ return 1;
+ return 0;
+}
+
+int X509_REQ_add1_attr_by_NID(X509_REQ *req,
+ int nid, int type,
+ const unsigned char *bytes, int len)
+{
+ if (X509at_add1_attr_by_NID(&req->req_info->attributes, nid,
+ type, bytes, len))
+ return 1;
+ return 0;
+}