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| author | Florian Weimer <fweimer@redhat.com> | 2017-04-13 13:09:38 +0200 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2017-04-13 13:09:38 +0200 |
| commit | e14a27723cc3a154d67f3f26e719d08c0ba9ad25 (patch) | |
| tree | c4706acf27f91784a8b592772d03e0c8da0b4731 /support/resolv_test.h | |
| parent | c803cb9b24c6cea15698768e4301e963b98e742c (diff) | |
| download | glibc-e14a27723cc3a154d67f3f26e719d08c0ba9ad25.tar.gz glibc-e14a27723cc3a154d67f3f26e719d08c0ba9ad25.tar.xz glibc-e14a27723cc3a154d67f3f26e719d08c0ba9ad25.zip | |
resolv: Reduce EDNS payload size to 1200 bytes [BZ #21361]
This hardens the stub resolver against fragmentation-based attacks.
Diffstat (limited to 'support/resolv_test.h')
| -rw-r--r-- | support/resolv_test.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/support/resolv_test.h b/support/resolv_test.h index 7a9f1f7ae8..6498751569 100644 --- a/support/resolv_test.h +++ b/support/resolv_test.h @@ -25,6 +25,16 @@ __BEGIN_DECLS +/* Information about EDNS properties of a DNS query. */ +struct resolv_edns_info +{ + bool active; + uint8_t extended_rcode; + uint8_t version; + uint16_t flags; + uint16_t payload_size; +}; + /* This struct provides context information when the response callback specified in struct resolv_redirect_config is invoked. */ struct resolv_response_context @@ -33,6 +43,7 @@ struct resolv_response_context size_t query_length; int server_index; bool tcp; + struct resolv_edns_info edns; }; /* This opaque struct is used to construct responses from within the |