unix_shared.cpp

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/*
Copyright (C) 2002-2020 UFO: Alien Invasion.

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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/

#include <unistd.h>
#include <sys/time.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <pwd.h>
#include <dlfcn.h>
#include <fcntl.h>
#include <locale.h>
#include <signal.h>
#include <dirent.h>

#include "../../common/common.h"
#include "../system.h"

int Sys_Milliseconds (void)
{
    struct timeval tp;
    struct timezone tzp;
    static int secbase = 0;

    gettimeofday(&tp, &tzp);

    if (!secbase) {
        secbase = tp.tv_sec;
        return tp.tv_usec / 1000;
    }

    return (tp.tv_sec - secbase) * 1000 + tp.tv_usec / 1000;
}

int Sys_Setenv (const char* name, const char* value)
{
    if (value && value[0] != '\0')
        return setenv(name, value, 1);
    else
        return unsetenv(name);
}

void Sys_Sleep (int milliseconds)
{
#if 0
    struct timespec sleep, remaining;
    sleep.tv_sec = (long) milliseconds / 1000;
    sleep.tv_nsec = 1000000 * (milliseconds - (long) milliseconds);
    while (nanosleep(&sleep, &remaining) < 0 && errno == EINTR)
        /* If nanosleep has been interrupted by a signal, adjust the
         * sleeping period and return to sleep.  */
        sleep = remaining;
#endif
    if (milliseconds < 1)
        milliseconds = 1;
    usleep(milliseconds * 1000);
}

void Sys_Breakpoint (void)
{
    raise(SIGTRAP);
}

#ifdef COMPILE_UFO
const char* Sys_SetLocale (const char* localeID)
{
    const char* locale;

# ifndef __sun
    unsetenv("LANGUAGE");
# endif /* __sun */
# ifdef __APPLE__
    if (localeID[0] != '\0') {
        if (Sys_Setenv("LANGUAGE", localeID) != 0)
            Com_Printf("...setenv for LANGUAGE failed: %s\n", localeID);
        if (Sys_Setenv("LC_ALL", localeID) != 0)
            Com_Printf("...setenv for LC_ALL failed: %s\n", localeID);
    }
# endif /* __APPLE__ */

    Sys_Setenv("LC_NUMERIC", "C");
    setlocale(LC_NUMERIC, "C");

    /* set to system default */
    setlocale(LC_ALL, "C");
    locale = setlocale(LC_MESSAGES, localeID);
    if (!locale) {
        if (Sys_Setenv("LANGUAGE", localeID) != 0) {
            locale = localeID;
        }
    }
    if (!locale) {
        Com_DPrintf(DEBUG_CLIENT, "...could not set to language: %s\n", localeID);
        locale = setlocale(LC_MESSAGES, "");
        if (!locale) {
            Com_DPrintf(DEBUG_CLIENT, "...could not set to system language\n");
        }
        return nullptr;
    }

    Com_Printf("...using language: %s\n", locale);
    return locale;
}

const char* Sys_GetLocale (void)
{
    /* Calling with nullptr param should return current system settings. */
    const char* currentLocale = setlocale(LC_MESSAGES, nullptr);
    if (Q_strvalid(currentLocale))
        return currentLocale;
    return "C";
}
#endif

#ifdef COMPILE_UFO
void Sys_SetAffinityAndPriority (void)
{
    if (sys_affinity->modified) {
        sys_affinity->modified = false;
    }

    if (sys_priority->modified) {
        sys_priority->modified = false;
    }
}
#endif

#ifdef USE_SIGNALS

static void Sys_Signal (int s)
{
    switch (s) {
    case SIGHUP:
    case SIGTERM:
    case SIGQUIT:
#ifndef COMPILE_UFO
    case SIGINT:
#endif
        Com_Printf("Received signal %d, quitting..\n", s);
        Sys_Quit();
        break;
#ifdef COMPILE_UFO
    case SIGINT:
        Com_Printf("Received signal %d, quitting..\n", s);
        Com_Quit();
        break;
#endif
    default:
        Sys_Error("Received signal %d.", s);
        break;
    }
}
#endif

void Sys_InitSignals (void)
{
#ifdef USE_SIGNALS
    signal(SIGHUP, Sys_Signal);
    signal(SIGINT, Sys_Signal);
    signal(SIGQUIT, Sys_Signal);
    signal(SIGILL, Sys_Signal);
    signal(SIGABRT, Sys_Signal);
    signal(SIGFPE, Sys_Signal);
    signal(SIGSEGV, Sys_Signal);
    signal(SIGTERM, Sys_Signal);
#endif
}

void Sys_OpenURL (const char* url)
{
    char buf[512];
#ifdef __APPLE__
    Com_sprintf(buf, sizeof(buf), "open \"%s\"", url);
#else
    Com_sprintf(buf, sizeof(buf), "xdg-open \"%s\"", url);
#endif
    system(buf) || 0;
}