rename source files for consistency

1 files changed, 0 insertions, 646 deletions

diff --git a/dosmain.c b/dosmain.c
deleted file mode 100644
index 9a802c6..0000000
--- a/dosmain.c
+++ /dev/null
@@ -1,646 +0,0 @@
-/*
- * VBMouse - DOS mouse driver exec entry point
- * Copyright (C) 2022 Javier S. Pedro
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
-
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <dos.h>
-#include <i86.h>
-
-#include "dlog.h"
-#include "int33.h"
-#include "int21dos.h"
-#include "ps2.h"
-#include "vbox.h"
-#include "vmware.h"
-#include "dostsr.h"
-
-#if USE_WHEEL
-static void detect_wheel(LPTSRDATA data)
-{
-	// Do a quick check for a mouse wheel here.
-	// The TSR will do its own check when it is reset anyway
-	if (data->haswheel = ps2m_detect_wheel()) {
-		printf("Wheel mouse found and enabled\n");
-	}
-}
-
-static int set_wheel(LPTSRDATA data, bool enable)
-{
-	printf("Setting wheel support to %s\n", enable ? "enabled" : "disabled");
-	data->usewheel = enable;
-
-	if (data->usewheel) {
-		detect_wheel(data);
-	} else {
-		data->haswheel = false;
-	}
-
-	return 0;
-}
-
-static int set_wheel_key(LPTSRDATA data, const char *keyname)
-{
-	if (!data->usewheel || !data->haswheel) {
-		fprintf(stderr, "Wheel not detected or support not enabled\n");
-		return EXIT_FAILURE;
-	}
-	if (keyname) {
-		if (stricmp(keyname, "updn") == 0) {
-			data->wheel_up_key = 0x4800;
-			data->wheel_down_key = 0x5000;
-			printf("Generate Up Arrow / Down Arrow key presses on wheel movement\n");
-		} else if (stricmp(keyname, "pageupdn") == 0) {
-			data->wheel_up_key = 0x4900;
-			data->wheel_down_key = 0x5100;
-			printf("Generate PageUp / PageDown key presses on wheel movement\n");
-		} else {
-			fprintf(stderr, "Unknown key '%s'\n", keyname);
-			return EXIT_FAILURE;
-		}
-	} else {
-		printf("Disabling wheel keystroke generation\n");
-		data->wheel_up_key = 0;
-		data->wheel_down_key = 0;
-	}
-	return EXIT_SUCCESS;
-}
-#endif /* USE_WHEEL */
-
-#if USE_VIRTUALBOX
-static int set_virtualbox_integration(LPTSRDATA data, bool enable)
-{
-	if (enable) {
-		int err;
-
-		data->vbavail = false; // Reinitialize it even if already enabled
-
-		err = vbox_init_device(&data->vb);
-		if (err) {
-			fprintf(stderr, "Cannot find VirtualBox PCI device, err=%d\n", err);
-			return err;
-		}
-
-		printf("Found VirtualBox device at IO 0x%x\n", data->vb.iobase);
-
-		err = vbox_init_buffer(&data->vb);
-		if (err) {
-			fprintf(stderr, "Cannot lock buffer used for VirtualBox communication, err=%d\n", err);
-			return err;
-		}
-
-		err = vbox_report_guest_info(&data->vb, VBOXOSTYPE_DOS);
-		if (err) {
-			fprintf(stderr, "VirtualBox communication is not working, err=%d\n", err);
-			return err;
-		}
-
-		printf("VirtualBox integration enabled\n");
-		data->vbavail = true;
-		data->vbhaveabs = true;
-	} else {
-		if (data->vbavail) {
-			vbox_set_mouse(&data->vb, false, false);
-
-			vbox_release_buffer(&data->vb);
-
-			printf("Disabled VirtualBox integration\n");
-			data->vbavail = false;
-			data->vbhaveabs = false;
-		} else {
-			printf("VirtualBox integration already disabled or not available\n");
-		}
-	}
-
-	return 0;
-}
-
-static int set_virtualbox_host_cursor(LPTSRDATA data, bool enable)
-{
-	printf("Setting host cursor to %s\n", enable ? "enabled" : "disabled");
-	data->vbwantcursor = enable;
-
-	return 0;
-}
-#endif
-
-#if USE_VMWARE
-static int set_vmware_integration(LPTSRDATA data, bool enable)
-{
-	if (enable) {
-		int32_t version;
-		uint32_t status;
-		uint16_t data_avail;
-
-		data->vmwavail = false;
-
-		version = vmware_get_version();
-		if (version < 0) {
-			fprintf(stderr, "Could not detect VMware, err=%ld\n", version);
-			return -1;
-		}
-
-		printf("Found VMware protocol version %ld\n", version);
-
-		vmware_abspointer_cmd(VMWARE_ABSPOINTER_CMD_ENABLE);
-
-		status = vmware_abspointer_status();
-		if ((status & VMWARE_ABSPOINTER_STATUS_MASK_ERROR)
-		        == VMWARE_ABSPOINTER_STATUS_MASK_ERROR) {
-			fprintf(stderr, "VMware absolute pointer error, err=0x%lx\n",
-			        status & VMWARE_ABSPOINTER_STATUS_MASK_ERROR);
-			return -1;
-		}
-
-		vmware_abspointer_data_clear();
-
-		// TSR part will enable the absolute mouse when reset
-
-		printf("VMware integration enabled\n");
-		data->vmwavail = true;
-	} else {
-		if (data->vmwavail) {
-			vmware_abspointer_cmd(VMWARE_ABSPOINTER_CMD_REQUEST_RELATIVE);
-			vmware_abspointer_cmd(VMWARE_ABSPOINTER_CMD_DISABLE);
-
-			data->vmwavail = false;
-			printf("Disabled VMware integration\n");
-		} else {
-			printf("VMware integration already disabled or not available\n");
-		}
-	}
-
-	return 0;
-}
-#endif
-
-static int set_integration(LPTSRDATA data, bool enable)
-{
-	if (enable) {
-		int err = -1;
-
-#if USE_VIRTUALBOX
-		// First check if we can enable the VirtualBox integration,
-		// since it's a PCI device it's easier to check if it's not present
-		err = set_virtualbox_integration(data, true);
-		if (!err) return 0;
-#endif
-
-#if USE_VMWARE
-		// Afterwards try VMWare integration
-		err = set_vmware_integration(data, true);
-		if (!err) return 0;
-#endif
-
-		printf("Neither VirtualBox nor VMware integration available\n");
-		return err;
-	} else {
-#if USE_VIRTUALBOX
-		if (data->vbavail) {
-			set_virtualbox_integration(data, false);
-		}
-#endif
-#if USE_VMWARE
-		if (data->vmwavail) {
-			set_vmware_integration(data, false);
-		}
-#endif
-		return 0;
-	}
-}
-
-static int set_host_cursor(LPTSRDATA data, bool enable)
-{
-#if USE_VIRTUALBOX
-	if (data->vbavail) {
-		return set_virtualbox_host_cursor(data, enable);
-	}
-#endif
-	printf("VirtualBox integration not available\n");
-	return -1;
-}
-
-static int configure_driver(LPTSRDATA data)
-{
-	int err;
-
-	// Configure the debug logging port
-	dlog_init();
-
-	// Check for PS/2 mouse BIOS availability
-	if ((err = ps2m_init(PS2M_PACKET_SIZE_PLAIN))) {
-		fprintf(stderr, "Cannot init PS/2 mouse BIOS, err=%d\n", err);
-		// Can't do anything without PS/2
-		return err;
-	}
-
-#if USE_WHEEL
-	// Let's utilize the wheel by default
-	data->usewheel = true;
-	data->wheel_up_key = 0;
-	data->wheel_down_key = 0;
-	detect_wheel(data);
-#endif
-
-#if USE_INTEGRATION
-	// Enable integration by default
-	set_integration(data, true);
-#endif
-
-#if USE_VIRTUALBOX
-	// Assume initially that we want host cursor
-	data->vbwantcursor = data->vbavail;
-#endif
-
-	return 0;
-}
-
-/** Converts bytes to MS-DOS "paragraphs" (16 bytes), rounding up. */
-static inline unsigned get_paragraphs(unsigned bytes)
-{
-	return (bytes + 15) / 16;
-}
-
-/** Gets the size of the resident part of this program, including the PSP. */
-static inline unsigned get_resident_program_size()
-{
-	return get_resident_size() + DOS_PSP_SIZE;
-}
-
-/** Deallocates the environment block from the passed PSP segment. */
-static void deallocate_environment(__segment psp)
-{
-	// TODO : Too lazy to make PSP struct;
-	// 0x2C is offsetof the environment block field on the PSP
-	uint16_t __far *envblockP = (uint16_t __far *) MK_FP(psp, 0x2C);
-	dos_free(*envblockP);
-	*envblockP = 0;
-}
-
-/** Copies a program to another location.
- *  @param new_seg PSP segment for the new location
- *  @param old_seg PSP segment for the old location
- *  @param size size of the program to copy including PSP size. */
-static void copy_program(__segment new_seg, __segment old_seg, unsigned size)
-{
-	// The MCB is always 1 segment before.
-	uint8_t __far *new_mcb = MK_FP(new_seg - 1, 0);
-	uint8_t __far *old_mcb = MK_FP(old_seg - 1, 0);
-	uint16_t __far *new_mcb_owner = (uint16_t __far *) &new_mcb[1];
-	char __far *new_mcb_owner_name = &new_mcb[8];
-	char __far *old_mcb_owner_name = &old_mcb[8];
-
-	// Copy entire resident segment including PSP
-	_fmemcpy(MK_FP(new_seg, 0), MK_FP(old_seg, 0), size);
-
-	// Make the new MCB point to itself as owner
-	*new_mcb_owner = new_seg;
-
-	// Copy the program name, too.
-	_fmemcpy(new_mcb_owner_name, old_mcb_owner_name, 8);
-}
-
-/** Allocates a UMB of the given size.
- *  If no UMBs are available, this may still return a block in conventional memory. */
-static __segment allocate_umb(unsigned size)
-{
-	bool old_umb_link = dos_query_umb_link_state();
-	unsigned int old_strategy = dos_query_allocation_strategy();
-	__segment new_segment;
-
-	dos_set_umb_link_state(true);
-	dos_set_allocation_strategy(DOS_FIT_BEST | DOS_FIT_HIGHONLY);
-
-	new_segment = dos_alloc(get_paragraphs(size));
-
-	dos_set_umb_link_state(old_umb_link);
-	dos_set_allocation_strategy(old_strategy);
-
-	return new_segment;
-}
-
-static int reallocate_to_umb(LPTSRDATA __far * data)
-{
-	const unsigned int resident_size = get_resident_program_size();
-	LPTSRDATA old_data = *data;
-	__segment old_psp_segment = FP_SEG(old_data) - (DOS_PSP_SIZE/16);
-	__segment new_psp_segment;
-
-	deallocate_environment(_psp);
-
-	// If we are already in UMA, don't bother
-	if (old_psp_segment >= 0xA000) {
-		return -1;
-	}
-
-	new_psp_segment = allocate_umb(resident_size);
-
-	if (new_psp_segment && new_psp_segment >= 0xA000) {
-		__segment new_segment = new_psp_segment + (DOS_PSP_SIZE/16);
-		printf("Moving to upper memory\n");
-
-		// Create a new program instance including PSP at the new_segment
-		copy_program(new_psp_segment, old_psp_segment, resident_size);
-
-		// Tell DOS to "switch" to the new program
-		dos_set_psp(new_psp_segment);
-
-		// Now update the data pointer to the new segment
-		*data = MK_FP(new_segment, FP_OFF(old_data));
-
-		return 0;
-	} else {
-		printf("No upper memory available\n");
-		if (new_psp_segment) {
-			// In case we got another low-memory segment...
-			dos_free(new_psp_segment);
-		}
-
-		return -1;
-	}
-}
-
-static __declspec(aborts) int install_driver(LPTSRDATA data, bool high)
-{
-	const unsigned int resident_size = DOS_PSP_SIZE + get_resident_size();
-
-	// No more interruptions from now on and until we TSR.
-	// Inserting ourselves in the interrupt chain should be atomic.
-	_disable();
-
-	data->prev_int33_handler = _dos_getvect(0x33);
-	_dos_setvect(0x33, data:>int33_isr);
-
-#if USE_WIN386
-	data->prev_int2f_handler = _dos_getvect(0x2f);
-	_dos_setvect(0x2f, data:>int2f_isr);
-#endif
-
-	printf("Driver installed\n");
-
-	// If we reallocated ourselves to UMB,
-	// it's time to free our initial conventional memory allocation
-	if (high) {
-		// We are about to free() our own code segment.
-		// Nothing should try to allocate memory between this and the TSR call
-		// below, since it could overwrite our code...
-		dos_free(_psp);
-	}
-
-	_dos_keep(EXIT_SUCCESS, get_paragraphs(resident_size));
-
-	// Shouldn't reach this part
-	return EXIT_FAILURE;
-}
-
-static bool check_if_driver_uninstallable(LPTSRDATA data)
-{
-	void (__interrupt __far *cur_int33_handler)() = _dos_getvect(0x33);
-
-	// Compare the segment of the installed handler to see if its ours
-	// or someone else's
-	if (FP_SEG(cur_int33_handler) != FP_SEG(data)) {
-		fprintf(stderr, "INT33 has been hooked by someone else, cannot safely remove\n");
-		return false;
-	}
-
-#if USE_WIN386
-	{
-		void (__interrupt __far *cur_int2f_handler)() = _dos_getvect(0x2f);
-
-		if (FP_SEG(cur_int2f_handler) != FP_SEG(data)) {
-			fprintf(stderr, "INT2F has been hooked by someone else, cannot safely remove\n");
-			return false;
-		}
-	}
-#endif
-
-	return true;
-}
-
-static int unconfigure_driver(LPTSRDATA data)
-{
-#if USE_INTEGRATION
-	set_integration(data, false);
-#endif
-
-	ps2m_enable(false);
-	ps2m_set_callback(0);
-
-	return 0;
-}
-
-static int uninstall_driver(LPTSRDATA data)
-{
-	_dos_setvect(0x33, data->prev_int33_handler);
-
-#if USE_WIN386
-	_dos_setvect(0x2f, data->prev_int2f_handler);
-#endif
-
-	// Find and deallocate the PSP (including the entire program),
-	// it is always 256 bytes (16 paragraphs) before the TSR segment
-	dos_free(FP_SEG(data) - (DOS_PSP_SIZE/16));
-
-	printf("Driver uninstalled\n");
-
-	return 0;
-}
-
-static int driver_reset(void)
-{
-	printf("Reset mouse driver\n");
-	return int33_reset() == 0xFFFF;
-}
-
-static int driver_not_found(void)
-{
-	fprintf(stderr, "Driver data not found (driver not installed?)\n");
-	return EXIT_FAILURE;
-}
-
-static void print_help(void)
-{
-	printf("\n"
-	    "Usage: \n"
-	    "    VBMOUSE <ACTION> <ARGS..>\n\n"
-	    "Supported actions:\n"
-	    "    install            install the driver (default)\n"
-	    "        low                install in conventional memory (otherwise UMB)\n"
-	    "    uninstall          uninstall the driver from memory\n"
-#if USE_WHEEL
-	    "    wheel <ON|OFF>     enable/disable wheel API support\n"
-	    "    wheelkey <KEY|OFF> emulate a specific keystroke on wheel scroll\n"
-	    "                          supported keys: updn, pageupdn\n"
-#endif
-#if USE_INTEGRATION
-	    "    integ <ON|OFF>     enable/disable virtualbox integration\n"
-	    "    hostcur <ON|OFF>   enable/disable mouse cursor rendering in host\n"
-#endif
-	    "    reset              reset mouse driver settings\n"
-	);
-}
-
-static int invalid_arg(const char *s)
-{
-	fprintf(stderr, "Invalid argument '%s'\n", s);
-	print_help();
-	return EXIT_FAILURE;
-}
-
-static int arg_required(const char *s)
-{
-	fprintf(stderr, "Argument required for '%s'\n", s);
-	print_help();
-	return EXIT_FAILURE;
-}
-
-static bool is_true(const char *s)
-{
-	return stricmp(s, "yes") == 0
-	       || stricmp(s, "y") == 0
-	       || stricmp(s, "on") == 0
-	       || stricmp(s, "true") == 0
-	       || stricmp(s, "enabled") == 0
-	       || stricmp(s, "enable") == 0
-	       || stricmp(s, "1") == 0;
-}
-
-static bool is_false(const char *s)
-{
-	return stricmp(s, "no") == 0
-	       || stricmp(s, "n") == 0
-	       || stricmp(s, "off") == 0
-	       || stricmp(s, "false") == 0
-	       || stricmp(s, "disabled") == 0
-	       || stricmp(s, "disable") == 0
-	       || stricmp(s, "0") == 0;
-}
-
-int main(int argc, const char *argv[])
-{
-	LPTSRDATA data = get_tsr_data(true);
-	int err, argi = 1;
-
-	printf("\nVBMouse %x.%x (like MSMOUSE %x.%x)\n", VERSION_MAJOR, VERSION_MINOR, REPORTED_VERSION_MAJOR, REPORTED_VERSION_MINOR);
-
-	if (argi >= argc || stricmp(argv[argi], "install") == 0) {
-		bool high = true;
-
-		argi++;
-		for (; argi < argc; argi++) {
-			if (stricmp(argv[argi], "low") == 0) {
-				high = false;
-			} else if (stricmp(argv[argi], "high") == 0) {
-				high = true;
-			} else {
-				return invalid_arg(argv[argi]);
-			}
-		}
-
-		if (data) {
-			printf("VBMouse already installed\n");
-			print_help();
-			return EXIT_SUCCESS;
-		}
-
-		data = get_tsr_data(false);
-		if (high) {
-			err = reallocate_to_umb(&data);
-			if (err) high = false; // Not fatal
-		} else {
-			deallocate_environment(_psp);
-		}
-		err = configure_driver(data);
-		if (err) return EXIT_FAILURE;
-		return install_driver(data, high);
-	} else if (stricmp(argv[argi], "uninstall") == 0) {
-		if (!data) return driver_not_found();
-		if (!check_if_driver_uninstallable(data)) {
-			return EXIT_FAILURE;
-		}
-		err = unconfigure_driver(data);
-		if (err) {
-			return EXIT_FAILURE;
-		}
-		return uninstall_driver(data);
-#if USE_WHEEL
-	} else if (stricmp(argv[argi], "wheel") == 0) {
-		bool enable = true;
-
-		if (!data) return driver_not_found();
-
-		argi++;
-		if (argi < argc) {
-			if (is_false(argv[argi])) enable = false;
-		}
-
-		return set_wheel(data, enable);
-	} else if (stricmp(argv[argi], "wheelkey") == 0) {
-		bool enable = true;
-		const char *key = 0;
-
-		if (!data) return driver_not_found();
-
-		argi++;
-		if (argi < argc) {
-			if (is_false(argv[argi])) enable = false;
-			else                      key = argv[argi];
-		}
-
-		if (enable) {
-			if (!key) return arg_required("wheelkey");
-			return set_wheel_key(data, key);
-		} else {
-			return set_wheel_key(data, 0);
-		}
-#endif
-#if USE_INTEGRATION
-	} else if (stricmp(argv[argi], "integ") == 0) {
-		bool enable = true;
-
-		if (!data) return driver_not_found();
-
-		argi++;
-		if (argi < argc) {
-			if (is_false(argv[argi])) enable = false;
-		}
-
-		return set_integration(data, enable);
-	} else if (stricmp(argv[argi], "hostcur") == 0) {
-		bool enable = true;
-
-		if (!data) return driver_not_found();
-
-		argi++;
-		if (argi < argc) {
-			if (is_false(argv[argi])) enable = false;
-		}
-
-		// Reset before changing this to ensure the cursor is not drawn
-		int33_reset();
-
-		return set_host_cursor(data, enable);
-#endif
-	} else if (stricmp(argv[argi], "reset") == 0) {
-		return driver_reset();
-	} else {
-		return invalid_arg(argv[argi]);
-	}
-}