mirror of
https://frontier.innolan.net/rainlance/amiga-tz.git
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134 lines
3.6 KiB
C
134 lines
3.6 KiB
C
/*
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* Copyright (c) 2015 Carsten Larsen
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include "private.h"
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#include "amiga_tz.h"
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#include "version.h"
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const char *vers = "\0$VER: datepatch" AMIGA_VERSION;
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struct Library *BattClockBase;
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struct Library *DOSBase = NULL;
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struct Library *UtilityBase = NULL;
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struct Library *LocaleBase = NULL;
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void amiga_open_lib_error(char *name, int version)
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{
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printf(OPEN_VER_ERROR, name, version);
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printf(REQ_ERROR);
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}
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int amiga_open_libs()
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{
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if(!(DOSBase = OpenLibrary(DOSLIB_NAME, DOSLIB_REV))) {
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amiga_open_lib_error(DOSLIB_NAME, DOSLIB_REV);
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return 1;
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}
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if(!(LocaleBase = OpenLibrary(LOCALELIB_NAME, LOCALELIB_REV))) {
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amiga_open_lib_error(LOCALELIB_NAME, LOCALELIB_REV);
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return 1;
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}
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if(!(UtilityBase = OpenLibrary(UTILLIB_NAME, UTILLIB_REV))) {
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amiga_open_lib_error(UTILLIB_NAME, UTILLIB_REV);
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return 1;
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}
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BattClockBase = OpenResource(BATTCLOCK_NAME);
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if (!(BattClockBase = OpenResource(BATTCLOCK_NAME))) {
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printf(OPEN_ERROR, BATTCLOCK_NAME);
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return 1;
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}
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return 0;
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}
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void amiga_close_libs()
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{
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if (LocaleBase != NULL) {
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CloseLibrary(LocaleBase);
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LocaleBase = NULL;
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}
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if (UtilityBase != NULL) {
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CloseLibrary(UtilityBase);
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UtilityBase = NULL;
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}
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if (DOSBase != NULL) {
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CloseLibrary(DOSBase);
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DOSBase = NULL;
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}
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}
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void PatchedWriteBattClock(unsigned long time)
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{
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WriteBattClock(time - get_gmtoffset());
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}
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ULONG PatchedReadBattClock(void)
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{
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return ReadBattClock() + get_gmtoffset();
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}
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struct Locale *PatchedOpenLocale(STRPTR name)
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{
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struct Locale *locale = OpenLocale(name);
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if (name == NULL) {
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locale->loc_GMTOffset = get_gmtoffset() / 60;
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}
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return locale;
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}
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void amiga_patch_libs()
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{
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Forbid();
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SetFunction(BattClockBase,(long)&ReadBattClock,(unsigned long (*)())PatchedReadBattClock);
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SetFunction(BattClockBase,(long)&WriteBattClock,(unsigned long (*)())PatchedWriteBattClock);
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SetFunction(LocaleBase,(long)&OpenLocale,(unsigned long (*)())PatchedOpenLocale);
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Permit();
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((struct CommandLineInterface *)BADDR(((struct Process *)FindTask(NULL))->pr_CLI))->cli_Module=NULL;
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}
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int
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main(const int argc, char *argv[])
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{
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struct timeval tv;
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amiga_open_libs();
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amiga_patch_libs();
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tv.tv_sec = (long)PatchedReadBattClock();
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tv.tv_usec = 0;
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settime(&tv);
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amiga_close_libs();
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}
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