mirror of
https://github.com/djhackersdev/bemanitools.git
synced 2026-08-07 02:52:35 -05:00
e8221631f9
Boils down to: - Include headers - Reduce boiler plate with helpers - Swap out explicit usages with core API layer and ensure the right API is configured beforehand
121 lines
2.1 KiB
C
121 lines
2.1 KiB
C
#define LOG_MODULE "lcd"
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// clang-format off
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// Don't format because the order is important here
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#include <windows.h>
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#include <ntdef.h>
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#include <devioctl.h>
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#include <ntddser.h>
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// clang-format on
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#include <stdbool.h>
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#include <string.h>
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#include <wchar.h>
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#include "core/log.h"
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#include "hook/iohook.h"
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#include "sdvxhook/lcd.h"
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#include "util/hex.h"
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#include "util/iobuf.h"
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#include "util/str.h"
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static HRESULT lcd_open(struct irp *irp);
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static HRESULT lcd_close(struct irp *irp);
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static HRESULT lcd_write(struct irp *irp);
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static HANDLE lcd_fd;
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void lcd_init(void)
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{
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log_assert(lcd_fd == NULL);
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HRESULT hr;
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hr = iohook_open_nul_fd(&lcd_fd);
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if (hr != S_OK) {
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log_fatal("Opening nul fd failed: %08lx", hr);
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}
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}
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void lcd_fini(void)
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{
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if (lcd_fd != NULL) {
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CloseHandle(lcd_fd);
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}
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lcd_fd = NULL;
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}
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HRESULT
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lcd_dispatch_irp(struct irp *irp)
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{
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log_assert(irp != NULL);
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if (irp->op != IRP_OP_OPEN && irp->fd != lcd_fd) {
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return iohook_invoke_next(irp);
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}
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switch (irp->op) {
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case IRP_OP_OPEN:
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return lcd_open(irp);
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case IRP_OP_CLOSE:
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return lcd_close(irp);
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case IRP_OP_READ:
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return S_OK;
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case IRP_OP_WRITE:
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return lcd_write(irp);
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case IRP_OP_IOCTL:
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return S_OK;
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default:
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return E_NOTIMPL;
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}
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}
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static HRESULT lcd_open(struct irp *irp)
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{
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log_assert(irp != NULL);
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if (!wstr_eq(irp->open_filename, L"COM1")) {
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return iohook_invoke_next(irp);
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}
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irp->fd = lcd_fd;
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log_info("\"LCD\" port opened");
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return S_OK;
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}
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static HRESULT lcd_close(struct irp *irp)
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{
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log_info("\"LCD\" port closed");
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return S_OK;
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}
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static HRESULT lcd_write(struct irp *irp)
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{
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char str[128];
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size_t nbytes;
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log_assert(irp != NULL);
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if (irp->write.nbytes < sizeof(str)) {
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nbytes = irp->write.nbytes;
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} else {
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nbytes = sizeof(str) - 1;
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}
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memcpy(str, irp->write.bytes, nbytes);
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str[nbytes] = '\0';
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log_misc("-> %s", str);
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irp->write.pos = irp->write.nbytes;
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return S_OK;
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}
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