+
+X509_STORE *
+setup_verify(BIO *bp, char *CAfile, char *CApath)
+{
+ X509_STORE *store;
+ X509_LOOKUP *lookup;
+ if(!(store = X509_STORE_new())) goto end;
+ lookup=X509_STORE_add_lookup(store,X509_LOOKUP_file());
+ if (lookup == NULL) goto end;
+ if (CAfile) {
+ if(!X509_LOOKUP_load_file(lookup,CAfile,X509_FILETYPE_PEM)) {
+ BIO_printf(bp, "Error loading file %s\n", CAfile);
+ goto end;
+ }
+ } else X509_LOOKUP_load_file(lookup,NULL,X509_FILETYPE_DEFAULT);
+
+ lookup=X509_STORE_add_lookup(store,X509_LOOKUP_hash_dir());
+ if (lookup == NULL) goto end;
+ if (CApath) {
+ if(!X509_LOOKUP_add_dir(lookup,CApath,X509_FILETYPE_PEM)) {
+ BIO_printf(bp, "Error loading directory %s\n", CApath);
+ goto end;
+ }
+ } else X509_LOOKUP_add_dir(lookup,NULL,X509_FILETYPE_DEFAULT);
+
+ ERR_clear_error();
+ return store;
+ end:
+ X509_STORE_free(store);
+ return NULL;
+}
+
+
+#ifndef DISABLE_OCSP
+static STACK_OF(X509) *
+cert_stack_from_store(X509_STORE * store)
+{
+STACK_OF(X509_OBJECT) * roots= store->objs;
+STACK_OF(X509) * sk = sk_X509_new_null();
+int i;
+
+for(i = sk_X509_OBJECT_num(roots) - 1; i >= 0; i--)
+ {
+ X509_OBJECT * tmp_obj= sk_X509_OBJECT_value(roots, i);
+ if(tmp_obj->type == X509_LU_X509)
+ {
+ X509 * x = tmp_obj->data.x509;
+ sk_X509_push(sk, x);
+ }
+ }
+return sk;
+}
+
+static void
+cert_stack_free(STACK_OF(X509) * sk)
+{
+while (sk_X509_num(sk) > 0) (void) sk_X509_pop(sk);
+sk_X509_free(sk);
+}
+
+
+static int
+tls_client_stapling_cb(SSL *s, void *arg)
+{
+const unsigned char *p;
+int len;
+OCSP_RESPONSE *rsp;
+OCSP_BASICRESP *bs;
+char *CAfile = NULL;
+X509_STORE *store = NULL;
+STACK_OF(X509) * sk;
+int ret = 1;
+
+len = SSL_get_tlsext_status_ocsp_resp(s, &p);
+/*BIO_printf(arg, "OCSP response: ");*/
+if (!p)
+ {
+ BIO_printf(arg, "no response received\n");
+ return 1;
+ }
+if(!(rsp = d2i_OCSP_RESPONSE(NULL, &p, len)))
+ {
+ BIO_printf(arg, "response parse error\n");
+ BIO_dump_indent(arg, (char *)p, len, 4);
+ return 0;
+ }
+if(!(bs = OCSP_response_get1_basic(rsp)))
+ {
+ BIO_printf(arg, "error parsing response\n");
+ return 0;
+ }
+
+
+CAfile = ocsp_stapling;
+if(!(store = setup_verify(arg, CAfile, NULL)))
+ {
+ BIO_printf(arg, "error in cert setup\n");
+ return 0;
+ }
+
+sk = cert_stack_from_store(store);
+
+/* OCSP_basic_verify takes a "store" arg, but does not
+use it for the chain verification, which is all we do
+when OCSP_NOVERIFY is set. The content from the wire
+(in "bs") and a cert-stack "sk" are all that is used. */
+
+if(OCSP_basic_verify(bs, sk, NULL, OCSP_NOVERIFY) <= 0)
+ {
+ BIO_printf(arg, "Response Verify Failure\n");
+ ERR_print_errors(arg);
+ ret = 0;
+ }
+else
+ BIO_printf(arg, "Response verify OK\n");
+
+cert_stack_free(sk);
+X509_STORE_free(store);
+return ret;
+}
+#endif
+
+
git://git.exim.org / users / jgh / exim.git / blobdiff