AMQP: Fix dissection of PDUs split across TCP segments
AMQP calls a subdissector table before tcp_dissect_pdus() is used to
desegment PDUs (see commit 27c10ed72e
),
so pinfo->can_desegment needs to be restored before it is decremented
a second time. Fixes #14217.
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@ -10763,6 +10763,11 @@ dissect_amqp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data)
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conversation_add_proto_data(conv, proto_amqp, conn);
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}
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check_amqp_version(tvb, conn);
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/* Restore can_desegment to whatever TCP set it to before calling the
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* subdissector (which will decrement it a second time) in order for
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* tcp_dissect_pdus() to work as expected.
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*/
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pinfo->can_desegment = pinfo->saved_can_desegment;
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if (!dissector_try_uint_new(version_table, conn->version, tvb, pinfo, tree, FALSE, data))
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{
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col_append_str(pinfo->cinfo, COL_INFO, "AMQP (unknown version)");
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