C++ RequestBuilder::PushMappedBuffer方法代码示例

void File::Write(Kernel::HLERequestContext& ctx) {
    IPC::RequestParser rp(ctx, 0x0803, 4, 2);
    u64 offset = rp.Pop<u64>();
    u32 length = rp.Pop<u32>();
    u32 flush = rp.Pop<u32>();
    auto& buffer = rp.PopMappedBuffer();
    LOG_TRACE(Service_FS, "Write {}: offset=0x{:x} length={}, flush=0x{:x}", GetName(), offset,
              length, flush);

    IPC::RequestBuilder rb = rp.MakeBuilder(2, 2);

    const FileSessionSlot* file = GetSessionData(ctx.Session());

    // Subfiles can not be written to
    if (file->subfile) {
        rb.Push(FileSys::ERROR_UNSUPPORTED_OPEN_FLAGS);
        rb.Push<u32>(0);
        rb.PushMappedBuffer(buffer);
        return;
    }

    std::vector<u8> data(length);
    buffer.Read(data.data(), 0, data.size());
    ResultVal<std::size_t> written = backend->Write(offset, data.size(), flush != 0, data.data());
    if (written.Failed()) {
        rb.Push(written.Code());
        rb.Push<u32>(0);
    } else {
        rb.Push(RESULT_SUCCESS);
        rb.Push<u32>(static_cast<u32>(*written));
    }
    rb.PushMappedBuffer(buffer);
}

void HTTP_C::OpenClientCertContext(Kernel::HLERequestContext& ctx) {
    IPC::RequestParser rp(ctx, 0x32, 2, 4);
    u32 cert_size = rp.Pop<u32>();
    u32 key_size = rp.Pop<u32>();
    Kernel::MappedBuffer& cert_buffer = rp.PopMappedBuffer();
    Kernel::MappedBuffer& key_buffer = rp.PopMappedBuffer();

    auto* session_data = GetSessionData(ctx.Session());
    ASSERT(session_data);

    ResultCode result(RESULT_SUCCESS);

    if (!session_data->initialized) {
        LOG_ERROR(Service_HTTP, "Command called without Initialize");
        result = ERROR_STATE_ERROR;
    } else if (session_data->current_http_context) {
        LOG_ERROR(Service_HTTP, "Command called with a bound context");
        result = ERROR_NOT_IMPLEMENTED;
    } else if (session_data->num_client_certs >= 2) {
        LOG_ERROR(Service_HTTP, "tried to load more then 2 client certs");
        result = ERROR_TOO_MANY_CLIENT_CERTS;
    } else {
        ++client_certs_counter;
        client_certs[client_certs_counter].handle = client_certs_counter;
        client_certs[client_certs_counter].certificate.resize(cert_size);
        cert_buffer.Read(&client_certs[client_certs_counter].certificate[0], 0, cert_size);
        client_certs[client_certs_counter].private_key.resize(key_size);
        cert_buffer.Read(&client_certs[client_certs_counter].private_key[0], 0, key_size);
        client_certs[client_certs_counter].session_id = session_data->session_id;

        ++session_data->num_client_certs;
    }

    LOG_DEBUG(Service_HTTP, "called, cert_size {}, key_size {}", cert_size, key_size);
    IPC::RequestBuilder rb = rp.MakeBuilder(1, 4);
    rb.Push(result);
    rb.PushMappedBuffer(cert_buffer);
    rb.PushMappedBuffer(key_buffer);
}

void Module::Interface::GetStepHistory(Kernel::HLERequestContext& ctx) {
    IPC::RequestParser rp(ctx, 0xB, 3, 2);

    u32 hours = rp.Pop<u32>();
    u64 start_time = rp.Pop<u64>();
    auto& buffer = rp.PopMappedBuffer();
    ASSERT_MSG(sizeof(u16) * hours == buffer.GetSize(),
               "Buffer for steps count has incorrect size");

    // Stub: set zero steps count for every hour
    for (u32 i = 0; i < hours; ++i) {
        const u16_le steps_per_hour = 0;
        buffer.Write(&steps_per_hour, i * sizeof(u16), sizeof(u16));
    }

    IPC::RequestBuilder rb = rp.MakeBuilder(1, 2);
    rb.Push(RESULT_SUCCESS);
    rb.PushMappedBuffer(buffer);

    LOG_WARNING(Service_PTM, "(STUBBED) called, from time(raw): 0x{:x}, for {} hours", start_time,
                hours);
}

void HTTP_C::AddPostDataAscii(Kernel::HLERequestContext& ctx) {
    IPC::RequestParser rp(ctx, 0x12, 3, 4);
    const u32 context_handle = rp.Pop<u32>();
    const u32 name_size = rp.Pop<u32>();
    const u32 value_size = rp.Pop<u32>();
    const std::vector<u8> name_buffer = rp.PopStaticBuffer();
    Kernel::MappedBuffer& value_buffer = rp.PopMappedBuffer();

    // Copy the name_buffer into a string without the \0 at the end
    const std::string name(name_buffer.begin(), name_buffer.end() - 1);

    // Copy the value_buffer into a string without the \0 at the end
    std::string value(value_size - 1, '\0');
    value_buffer.Read(&value[0], 0, value_size - 1);

    auto* session_data = GetSessionData(ctx.Session());
    ASSERT(session_data);

    if (!session_data->initialized) {
        LOG_ERROR(Service_HTTP, "Tried to add post data on an uninitialized session");
        IPC::RequestBuilder rb = rp.MakeBuilder(1, 2);
        rb.Push(ERROR_STATE_ERROR);
        rb.PushMappedBuffer(value_buffer);
        return;
    }

    // This command can only be called with a bound context
    if (!session_data->current_http_context) {
        LOG_ERROR(Service_HTTP, "Command called without a bound context");

        IPC::RequestBuilder rb = rp.MakeBuilder(1, 2);
        rb.Push(ResultCode(ErrorDescription::NotImplemented, ErrorModule::HTTP,
                           ErrorSummary::Internal, ErrorLevel::Permanent));
        rb.PushMappedBuffer(value_buffer);
        return;
    }

    if (session_data->current_http_context != context_handle) {
        LOG_ERROR(Service_HTTP,
                  "Tried to add post data on a mismatched session input context={} session "
                  "context={}",
                  context_handle, *session_data->current_http_context);
        IPC::RequestBuilder rb = rp.MakeBuilder(1, 2);
        rb.Push(ERROR_STATE_ERROR);
        rb.PushMappedBuffer(value_buffer);
        return;
    }

    auto itr = contexts.find(context_handle);
    ASSERT(itr != contexts.end());

    if (itr->second.state != RequestState::NotStarted) {
        LOG_ERROR(Service_HTTP,
                  "Tried to add post data on a context that has already been started.");
        IPC::RequestBuilder rb = rp.MakeBuilder(1, 2);
        rb.Push(ResultCode(ErrCodes::InvalidRequestState, ErrorModule::HTTP,
                           ErrorSummary::InvalidState, ErrorLevel::Permanent));
        rb.PushMappedBuffer(value_buffer);
        return;
    }

    ASSERT(std::find_if(itr->second.post_data.begin(), itr->second.post_data.end(),
                        [&name](const Context::PostData& m) -> bool { return m.name == name; }) ==
           itr->second.post_data.end());

    itr->second.post_data.emplace_back(name, value);

    IPC::RequestBuilder rb = rp.MakeBuilder(1, 2);
    rb.Push(RESULT_SUCCESS);
    rb.PushMappedBuffer(value_buffer);

    LOG_DEBUG(Service_HTTP, "called, name={}, value={}, context_handle={}", name, value,
              context_handle);
}

void HTTP_C::CreateContext(Kernel::HLERequestContext& ctx) {
    IPC::RequestParser rp(ctx, 0x2, 2, 2);
    const u32 url_size = rp.Pop<u32>();
    RequestMethod method = rp.PopEnum<RequestMethod>();
    Kernel::MappedBuffer& buffer = rp.PopMappedBuffer();

    // Copy the buffer into a string without the \0 at the end of the buffer
    std::string url(url_size, '\0');
    buffer.Read(&url[0], 0, url_size - 1);

    LOG_DEBUG(Service_HTTP, "called, url_size={}, url={}, method={}", url_size, url,
              static_cast<u32>(method));

    auto* session_data = GetSessionData(ctx.Session());
    ASSERT(session_data);

    if (!session_data->initialized) {
        LOG_ERROR(Service_HTTP, "Tried to create a context on an uninitialized session");
        IPC::RequestBuilder rb = rp.MakeBuilder(1, 2);
        rb.Push(ERROR_STATE_ERROR);
        rb.PushMappedBuffer(buffer);
        return;
    }

    // This command can only be called without a bound session.
    if (session_data->current_http_context) {
        LOG_ERROR(Service_HTTP, "Command called with a bound context");

        IPC::RequestBuilder rb = rp.MakeBuilder(1, 2);
        rb.Push(ResultCode(ErrorDescription::NotImplemented, ErrorModule::HTTP,
                           ErrorSummary::Internal, ErrorLevel::Permanent));
        rb.PushMappedBuffer(buffer);
        return;
    }

    static constexpr std::size_t MaxConcurrentHTTPContexts = 8;
    if (session_data->num_http_contexts >= MaxConcurrentHTTPContexts) {
        // There can only be 8 HTTP contexts open at the same time for any particular session.
        LOG_ERROR(Service_HTTP, "Tried to open too many HTTP contexts");

        IPC::RequestBuilder rb = rp.MakeBuilder(1, 2);
        rb.Push(ResultCode(ErrCodes::TooManyContexts, ErrorModule::HTTP, ErrorSummary::InvalidState,
                           ErrorLevel::Permanent));
        rb.PushMappedBuffer(buffer);
        return;
    }

    if (method == RequestMethod::None || static_cast<u32>(method) >= TotalRequestMethods) {
        LOG_ERROR(Service_HTTP, "invalid request method={}", static_cast<u32>(method));

        IPC::RequestBuilder rb = rp.MakeBuilder(1, 2);
        rb.Push(ResultCode(ErrCodes::InvalidRequestMethod, ErrorModule::HTTP,
                           ErrorSummary::InvalidState, ErrorLevel::Permanent));
        rb.PushMappedBuffer(buffer);
        return;
    }

    contexts.emplace(++context_counter, Context());
    contexts[context_counter].url = std::move(url);
    contexts[context_counter].method = method;
    contexts[context_counter].state = RequestState::NotStarted;
    // TODO(Subv): Find a correct default value for this field.
    contexts[context_counter].socket_buffer_size = 0;
    contexts[context_counter].handle = context_counter;
    contexts[context_counter].session_id = session_data->session_id;

    session_data->num_http_contexts++;

    IPC::RequestBuilder rb = rp.MakeBuilder(2, 2);
    rb.Push(RESULT_SUCCESS);
    rb.Push<u32>(context_counter);
    rb.PushMappedBuffer(buffer);
}