1 files changed, 66 insertions, 0 deletions
diff --git a/web/server/h2o/libh2o/lib/handler/reproxy.c b/web/server/h2o/libh2o/lib/handler/reproxy.c
new file mode 100644
index 00000000..369386d2
--- /dev/null
+++ b/web/server/h2o/libh2o/lib/handler/reproxy.c
@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2014,2015 DeNA Co., Ltd., Kazuho Oku, Daisuke Maki
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+#include "h2o.h"
+
+static void on_send(h2o_ostream_t *self, h2o_req_t *req, h2o_iovec_t *inbufs, size_t inbufcnt, h2o_send_state_t state)
+{
+    /* nothing to do */
+}
+
+static void on_setup_ostream(h2o_filter_t *self, h2o_req_t *req, h2o_ostream_t **slot)
+{
+    h2o_iovec_t dest, method;
+    ssize_t xru_index;
+
+    /* obtain x-reproxy-url header, or skip to next ostream */
+    if ((xru_index = h2o_find_header(&req->res.headers, H2O_TOKEN_X_REPROXY_URL, -1)) == -1) {
+        h2o_setup_next_ostream(req, slot);
+        return;
+    }
+    dest = req->res.headers.entries[xru_index].value;
+    h2o_delete_header(&req->res.headers, xru_index);
+
+    /* setup params */
+    switch (req->res.status) {
+    case 307:
+    case 308:
+        method = req->method;
+        break;
+    default:
+        method = h2o_iovec_init(H2O_STRLIT("GET"));
+        req->entity = (h2o_iovec_t){NULL};
+        break;
+    }
+
+    /* request internal redirect (is deferred) */
+    h2o_send_redirect_internal(req, method, dest.base, dest.len, 0);
+
+    /* setup filter (that swallows the response until the timeout gets fired) */
+    h2o_ostream_t *ostream = h2o_add_ostream(req, sizeof(*ostream), slot);
+    ostream->do_send = on_send;
+}
+
+void h2o_reproxy_register(h2o_pathconf_t *pathconf)
+{
+    h2o_filter_t *self = h2o_create_filter(pathconf, sizeof(*self));
+    self->on_setup_ostream = on_setup_ostream;
+}