refactor all common parts and games

common/platform/hwmon.c

@@ -0,0 +1,107 @@
+#include <windows.h>
+
+#include <assert.h>
+#include <winioctl.h>
+#include <string.h>
+
+#include "hook/iohook.h"
+
+#include "platform/hwmon.h"
+
+#include "util/dprintf.h"
+#include "util/str.h"
+
+#define HWMON_IOCTL_READ_CPU_TEMP CTL_CODE(0x8000, 0x800, METHOD_BUFFERED, FILE_READ_ACCESS)
+
+static HRESULT hwmon_handle_irp(struct irp *irp);
+static HRESULT hwmon_handle_open(struct irp *irp);
+static HRESULT hwmon_handle_close(struct irp *irp);
+static HRESULT hwmon_handle_ioctl(struct irp *irp);
+
+static HRESULT hwmon_ioctl_read_cpu_temp(struct irp *irp);
+
+static HANDLE hwmon_fd;
+
+HRESULT hwmon_hook_init(const struct hwmon_config *cfg)
+{
+    HRESULT hr;
+
+    assert(cfg != NULL);
+
+    if (!cfg->enable) {
+        return S_FALSE;
+    }
+
+    hr = iohook_open_nul_fd(&hwmon_fd);
+
+    if (FAILED(hr)) {
+        return hr;
+    }
+
+    hr = iohook_push_handler(hwmon_handle_irp);
+
+    if (FAILED(hr)) {
+        return hr;
+    }
+
+    return S_OK;
+}
+
+static HRESULT hwmon_handle_irp(struct irp *irp)
+{
+    assert(irp != NULL);
+
+    if (irp->op != IRP_OP_OPEN && irp->fd != hwmon_fd) {
+        return iohook_invoke_next(irp);
+    }
+
+    switch (irp->op) {
+    case IRP_OP_OPEN:   return hwmon_handle_open(irp);
+    case IRP_OP_CLOSE:  return hwmon_handle_close(irp);
+    case IRP_OP_IOCTL:  return hwmon_handle_ioctl(irp);
+    default:            return HRESULT_FROM_WIN32(ERROR_INVALID_FUNCTION);
+    }
+}
+
+static HRESULT hwmon_handle_open(struct irp *irp)
+{
+    if (!wstr_ieq(irp->open_filename, L"\\\\.\\sghwmonitor")) {
+        return iohook_invoke_next(irp);
+    }
+
+    dprintf("Hwmon: Opened device\n");
+    irp->fd = hwmon_fd;
+
+    return S_OK;
+}
+
+static HRESULT hwmon_handle_close(struct irp *irp)
+{
+    dprintf("Hwmon: Closed device\n");
+
+    return S_OK;
+}
+
+static HRESULT hwmon_handle_ioctl(struct irp *irp)
+{
+    switch (irp->ioctl) {
+    case HWMON_IOCTL_READ_CPU_TEMP:
+        return hwmon_ioctl_read_cpu_temp(irp);
+
+    default:
+        dprintf("Hwmon: Unknown ioctl %08x, write %i read %i\n",
+                irp->ioctl,
+                (int) irp->write.nbytes,
+                (int) irp->read.nbytes);
+
+        return HRESULT_FROM_WIN32(ERROR_INVALID_FUNCTION);
+    }
+}
+
+static HRESULT hwmon_ioctl_read_cpu_temp(struct irp *irp)
+{
+    /* Assuming this is Celsius. It also seems to be biased by -23 (based on the
+       caller code) despite being a 32-bit int. */
+
+    return iobuf_write_le32(&irp->read, 52);
+}