1 files changed, 106 insertions, 0 deletions
diff --git a/web/server/h2o/libh2o/lib/handler/redirect.c b/web/server/h2o/libh2o/lib/handler/redirect.c
new file mode 100644
index 00000000..c8b9c508
--- /dev/null
+++ b/web/server/h2o/libh2o/lib/handler/redirect.c
@@ -0,0 +1,106 @@
+/*
+ * Copyright (c) 2015 DeNA Co., Ltd., Kazuho Oku
+ *
+ * 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 <stdlib.h>
+#include "h2o.h"
+
+#define MODULE_NAME "lib/handler/redirect.c"
+
+struct st_h2o_redirect_handler_t {
+    h2o_handler_t super;
+    int internal;
+    int status;
+    h2o_iovec_t prefix;
+};
+
+static void on_dispose(h2o_handler_t *_self)
+{
+    h2o_redirect_handler_t *self = (void *)_self;
+    free(self->prefix.base);
+}
+
+static void redirect_internally(h2o_redirect_handler_t *self, h2o_req_t *req, h2o_iovec_t dest)
+{
+    h2o_iovec_t method;
+    h2o_url_t input, resolved;
+
+    /* resolve the URL */
+    if (h2o_url_parse_relative(dest.base, dest.len, &input) != 0) {
+        h2o_req_log_error(req, MODULE_NAME, "invalid destination:%.*s", (int)dest.len, dest.base);
+        goto SendInternalError;
+    }
+    if (input.scheme != NULL && input.authority.base != NULL) {
+        resolved = input;
+    } else {
+        h2o_url_t base;
+        /* we MUST to set authority to that of hostconf, or internal redirect might create a TCP connection */
+        if (h2o_url_init(&base, req->scheme, req->hostconf->authority.hostport, req->path) != 0) {
+            h2o_req_log_error(req, MODULE_NAME, "failed to parse current authority:%.*s", (int)req->authority.len,
+                              req->authority.base);
+            goto SendInternalError;
+        }
+        h2o_url_resolve(&req->pool, &base, &input, &resolved);
+    }
+
+    /* determine the method */
+    switch (self->status) {
+    case 307:
+    case 308:
+        method = req->method;
+        break;
+    default:
+        method = h2o_iovec_init(H2O_STRLIT("GET"));
+        req->entity = (h2o_iovec_t){NULL};
+        break;
+    }
+
+    h2o_reprocess_request_deferred(req, method, resolved.scheme, resolved.authority, resolved.path, NULL, 1);
+    return;
+
+SendInternalError:
+    h2o_send_error_503(req, "Internal Server Error", "internal server error", 0);
+}
+
+static int on_req(h2o_handler_t *_self, h2o_req_t *req)
+{
+    h2o_redirect_handler_t *self = (void *)_self;
+    h2o_iovec_t dest = h2o_build_destination(req, self->prefix.base, self->prefix.len, 1);
+
+    /* redirect */
+    if (self->internal) {
+        redirect_internally(self, req, dest);
+    } else {
+        h2o_send_redirect(req, self->status, "Redirected", dest.base, dest.len);
+    }
+
+    return 0;
+}
+
+h2o_redirect_handler_t *h2o_redirect_register(h2o_pathconf_t *pathconf, int internal, int status, const char *prefix)
+{
+    h2o_redirect_handler_t *self = (void *)h2o_create_handler(pathconf, sizeof(*self));
+    self->super.dispose = on_dispose;
+    self->super.on_req = on_req;
+    self->internal = internal;
+    self->status = status;
+    self->prefix = h2o_strdup(NULL, prefix, SIZE_MAX);
+    return self;
+}