+int set_ext_copy(int *copy_type, const char *arg)
+{
+ if (!strcasecmp(arg, "none"))
+ *copy_type = EXT_COPY_NONE;
+ else if (!strcasecmp(arg, "copy"))
+ *copy_type = EXT_COPY_ADD;
+ else if (!strcasecmp(arg, "copyall"))
+ *copy_type = EXT_COPY_ALL;
+ else
+ return 0;
+ return 1;
+}
+
+int copy_extensions(X509 *x, X509_REQ *req, int copy_type)
+{
+ STACK_OF(X509_EXTENSION) *exts = NULL;
+ X509_EXTENSION *ext, *tmpext;
+ ASN1_OBJECT *obj;
+ int i, idx, ret = 0;
+ if (!x || !req || (copy_type == EXT_COPY_NONE))
+ return 1;
+ exts = X509_REQ_get_extensions(req);
+
+ for(i = 0; i < sk_X509_EXTENSION_num(exts); i++) {
+ ext = sk_X509_EXTENSION_value(exts, i);
+ obj = X509_EXTENSION_get_object(ext);
+ idx = X509_get_ext_by_OBJ(x, obj, -1);
+ /* Does extension exist? */
+ if (idx != -1) {
+ /* If normal copy don't override existing extension */
+ if (copy_type == EXT_COPY_ADD)
+ continue;
+ /* Delete all extensions of same type */
+ do {
+ tmpext = X509_get_ext(x, idx);
+ X509_delete_ext(x, idx);
+ X509_EXTENSION_free(tmpext);
+ idx = X509_get_ext_by_OBJ(x, obj, -1);
+ } while (idx != -1);
+ }
+ if (!X509_add_ext(x, ext, -1))
+ goto end;
+ }
+
+ ret = 1;
+
+ end:
+
+ sk_X509_EXTENSION_pop_free(exts, X509_EXTENSION_free);
+
+ return ret;
+}
+
+
+
+