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Posted to commits@trafficserver.apache.org by bc...@apache.org on 2021/10/27 20:53:33 UTC

[trafficserver] 04/04: Add some checking to validate the scheme matches the wire protocol. (#8465)

This is an automated email from the ASF dual-hosted git repository.

bcall pushed a commit to branch 9.1.x
in repository https://gitbox.apache.org/repos/asf/trafficserver.git

commit d6462761f284634e482a95974002ed271b0efa1b
Author: Alan M. Carroll <am...@apache.org>
AuthorDate: Wed Oct 27 13:41:34 2021 -0500

    Add some checking to validate the scheme matches the wire protocol. (#8465)
    
    (cherry picked from commit 92849ce8e99155c914aea4b82ed63e10e428bee1)
    
     Conflicts:
    	proxy/http/HttpSM.cc
---
 proxy/http/HttpSM.cc | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/proxy/http/HttpSM.cc b/proxy/http/HttpSM.cc
index 0416edc..2cf3e6a 100644
--- a/proxy/http/HttpSM.cc
+++ b/proxy/http/HttpSM.cc
@@ -863,6 +863,18 @@ HttpSM::state_read_client_request_header(int event, void *data)
       break;
     }
 
+    if (!is_internal) {
+      auto scheme = t_state.hdr_info.client_request.url_get()->scheme_get_wksidx();
+      if ((client_connection_is_ssl && (scheme == URL_WKSIDX_HTTP || scheme == URL_WKSIDX_WS)) ||
+          (!client_connection_is_ssl && (scheme == URL_WKSIDX_HTTPS || scheme == URL_WKSIDX_WSS))) {
+        SMDebug("http", "scheme [%s] vs. protocol [%s] mismatch", hdrtoken_index_to_wks(scheme),
+                client_connection_is_ssl ? "tls" : "plaintext");
+        t_state.http_return_code = HTTP_STATUS_BAD_REQUEST;
+        call_transact_and_set_next_state(HttpTransact::BadRequest);
+        break;
+      }
+    }
+
     if (_from_early_data) {
       // Only allow early data for safe methods defined in RFC7231 Section 4.2.1.
       // https://tools.ietf.org/html/rfc7231#section-4.2.1