AtStep.cc

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/*
 * Copyright (C) 1996-2025 The Squid Software Foundation and contributors
 *
 * Squid software is distributed under GPLv2+ license and includes
 * contributions from numerous individuals and organizations.
 * Please see the COPYING and CONTRIBUTORS files for details.
 */
 
#include "squid.h"
 
#include "acl/AtStep.h"
#include "acl/FilledChecklist.h"
#include "client_side.h"
#include "http/Stream.h"
#if USE_OPENSSL
#include "ssl/ServerBump.h"
#endif
 
int
Acl::AtStepCheck::match(ACLChecklist * const ch)
{
    const auto checklist = Filled(ch);
 
#if USE_OPENSSL
    // We use step1 for all these very different cases:
    // - The transaction is not subject to ssl_bump rules (if any).
    // - No ssl_bump action has matched yet.
    // - The ssl_bump client-first action has already matched.
    // - Another ssl_bump action has already matched, but
    //   ConnStateData::serverBump() has not been built yet.
    auto currentSslBumpStep = XactionStep::tlsBump1;
 
    if (const auto mgr = checklist->conn()) {
        if (const auto serverBump = mgr->serverBump())
            currentSslBumpStep = serverBump->step;
    }
 
    if (data->match(currentSslBumpStep))
        return 1;
#endif // USE_OPENSSL
 
    if (data->match(XactionStep::generatingConnect)) {
        if (!checklist->request)
            return 0; // we have warned about the missing request earlier
 
        if (!checklist->request->masterXaction) {
            debugs(28, DBG_IMPORTANT, "ERROR: Squid BUG: at_step GeneratingCONNECT ACL is missing master transaction info. Assuming mismatch.");
            return 0;
        }
 
        return checklist->request->masterXaction->generatingConnect ? 1 : 0;
    }
 
    return 0;
}