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Quack 3
This commit is contained in:
Literally A Penguin
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e8bd66b89c
commit
0bf99969fd
379
linux/sys_linux.c
Normal file
379
linux/sys_linux.c
Normal file
@ -0,0 +1,379 @@
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#include <unistd.h>
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#include <signal.h>
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#include <stdlib.h>
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#include <limits.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <sys/ipc.h>
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#include <sys/shm.h>
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#include <sys/stat.h>
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#include <string.h>
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#include <ctype.h>
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#include <sys/wait.h>
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#include <sys/mman.h>
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#include <errno.h>
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#include <mntent.h>
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#include <dlfcn.h>
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#include "../qcommon/qcommon.h"
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#include "../linux/rw_linux.h"
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cvar_t *nostdout;
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unsigned sys_frame_time;
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uid_t saved_euid;
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qboolean stdin_active = true;
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// =======================================================================
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// General routines
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// =======================================================================
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void Sys_ConsoleOutput (char *string)
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{
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if (nostdout && nostdout->value)
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return;
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fputs(string, stdout);
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}
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void Sys_Printf (char *fmt, ...)
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{
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va_list argptr;
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char text[1024];
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unsigned char *p;
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va_start (argptr,fmt);
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vsprintf (text,fmt,argptr);
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va_end (argptr);
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if (strlen(text) > sizeof(text))
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Sys_Error("memory overwrite in Sys_Printf");
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if (nostdout && nostdout->value)
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return;
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for (p = (unsigned char *)text; *p; p++) {
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*p &= 0x7f;
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if ((*p > 128 || *p < 32) && *p != 10 && *p != 13 && *p != 9)
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printf("[%02x]", *p);
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else
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putc(*p, stdout);
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}
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}
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void Sys_Quit (void)
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{
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CL_Shutdown ();
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Qcommon_Shutdown ();
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fcntl (0, F_SETFL, fcntl (0, F_GETFL, 0) & ~FNDELAY);
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_exit(0);
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}
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void Sys_Init(void)
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{
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#if id386
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// Sys_SetFPCW();
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#endif
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}
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void Sys_Error (char *error, ...)
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{
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va_list argptr;
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char string[1024];
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// change stdin to non blocking
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fcntl (0, F_SETFL, fcntl (0, F_GETFL, 0) & ~FNDELAY);
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CL_Shutdown ();
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Qcommon_Shutdown ();
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va_start (argptr,error);
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vsprintf (string,error,argptr);
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va_end (argptr);
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fprintf(stderr, "Error: %s\n", string);
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_exit (1);
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}
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void Sys_Warn (char *warning, ...)
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{
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va_list argptr;
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char string[1024];
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va_start (argptr,warning);
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vsprintf (string,warning,argptr);
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va_end (argptr);
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fprintf(stderr, "Warning: %s", string);
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}
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/*
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============
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Sys_FileTime
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returns -1 if not present
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============
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*/
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int Sys_FileTime (char *path)
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{
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struct stat buf;
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if (stat (path,&buf) == -1)
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return -1;
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return buf.st_mtime;
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}
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void floating_point_exception_handler(int whatever)
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{
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// Sys_Warn("floating point exception\n");
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signal(SIGFPE, floating_point_exception_handler);
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}
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char *Sys_ConsoleInput(void)
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{
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static char text[256];
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int len;
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fd_set fdset;
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struct timeval timeout;
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if (!dedicated || !dedicated->value)
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return NULL;
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if (!stdin_active)
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return NULL;
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FD_ZERO(&fdset);
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FD_SET(0, &fdset); // stdin
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timeout.tv_sec = 0;
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timeout.tv_usec = 0;
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if (select (1, &fdset, NULL, NULL, &timeout) == -1 || !FD_ISSET(0, &fdset))
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return NULL;
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len = read (0, text, sizeof(text));
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if (len == 0) { // eof!
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stdin_active = false;
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return NULL;
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}
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if (len < 1)
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return NULL;
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text[len-1] = 0; // rip off the /n and terminate
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return text;
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}
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/*****************************************************************************/
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static void *game_library;
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/*
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=================
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Sys_UnloadGame
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=================
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*/
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void Sys_UnloadGame (void)
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{
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if (game_library)
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dlclose (game_library);
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game_library = NULL;
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}
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/*
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=================
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Sys_GetGameAPI
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Loads the game dll
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=================
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*/
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void *Sys_GetGameAPI (void *parms)
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{
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void *(*GetGameAPI) (void *);
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char name[MAX_OSPATH];
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char curpath[MAX_OSPATH];
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char *path;
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#ifdef __i386__
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const char *gamename = "gamei386.so";
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#elif defined __alpha__
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const char *gamename = "gameaxp.so";
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#else
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#error Unknown arch
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#endif
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setreuid(getuid(), getuid());
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setegid(getgid());
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if (game_library)
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Com_Error (ERR_FATAL, "Sys_GetGameAPI without Sys_UnloadingGame");
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getcwd(curpath, sizeof(curpath));
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Com_Printf("------- Loading %s -------", gamename);
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// now run through the search paths
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path = NULL;
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while (1)
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{
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path = FS_NextPath (path);
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if (!path)
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return NULL; // couldn't find one anywhere
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sprintf (name, "%s/%s/%s", curpath, path, gamename);
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game_library = dlopen (name, RTLD_NOW );
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if (game_library)
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{
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Com_DPrintf ("LoadLibrary (%s)\n",name);
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break;
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}
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}
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GetGameAPI = (void *)dlsym (game_library, "GetGameAPI");
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if (!GetGameAPI)
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{
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Sys_UnloadGame ();
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return NULL;
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}
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return GetGameAPI (parms);
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}
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/*****************************************************************************/
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void Sys_AppActivate (void)
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{
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}
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void Sys_SendKeyEvents (void)
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{
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#ifndef DEDICATED_ONLY
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if (KBD_Update_fp)
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KBD_Update_fp();
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#endif
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// grab frame time
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sys_frame_time = Sys_Milliseconds();
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}
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/*****************************************************************************/
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char *Sys_GetClipboardData(void)
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{
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return NULL;
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}
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int main (int argc, char **argv)
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{
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int time, oldtime, newtime;
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// go back to real user for config loads
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saved_euid = geteuid();
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seteuid(getuid());
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Qcommon_Init(argc, argv);
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fcntl(0, F_SETFL, fcntl (0, F_GETFL, 0) | FNDELAY);
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nostdout = Cvar_Get("nostdout", "0", 0);
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if (!nostdout->value) {
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fcntl(0, F_SETFL, fcntl (0, F_GETFL, 0) | FNDELAY);
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// printf ("Linux Quake -- Version %0.3f\n", LINUX_VERSION);
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}
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oldtime = Sys_Milliseconds ();
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while (1)
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{
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// find time spent rendering last frame
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do {
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newtime = Sys_Milliseconds ();
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time = newtime - oldtime;
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} while (time < 1);
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Qcommon_Frame (time);
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oldtime = newtime;
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}
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}
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void Sys_CopyProtect(void)
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{
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FILE *mnt;
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struct mntent *ent;
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char path[MAX_OSPATH];
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struct stat st;
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qboolean found_cd = false;
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static qboolean checked = false;
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if (checked)
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return;
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if ((mnt = setmntent("/etc/mtab", "r")) == NULL)
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Com_Error(ERR_FATAL, "Can't read mount table to determine mounted cd location.");
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while ((ent = getmntent(mnt)) != NULL) {
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if (strcmp(ent->mnt_type, "iso9660") == 0) {
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// found a cd file system
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found_cd = true;
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sprintf(path, "%s/%s", ent->mnt_dir, "install/data/quake2.exe");
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if (stat(path, &st) == 0) {
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// found it
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checked = true;
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endmntent(mnt);
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return;
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}
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sprintf(path, "%s/%s", ent->mnt_dir, "Install/Data/quake2.exe");
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if (stat(path, &st) == 0) {
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// found it
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checked = true;
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endmntent(mnt);
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return;
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}
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sprintf(path, "%s/%s", ent->mnt_dir, "quake2.exe");
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if (stat(path, &st) == 0) {
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// found it
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checked = true;
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endmntent(mnt);
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return;
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}
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}
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}
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endmntent(mnt);
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if (found_cd)
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Com_Error (ERR_FATAL, "Could not find a Quake2 CD in your CD drive.");
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Com_Error (ERR_FATAL, "Unable to find a mounted iso9660 file system.\n"
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"You must mount the Quake2 CD in a cdrom drive in order to play.");
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}
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#if 0
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/*
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================
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Sys_MakeCodeWriteable
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================
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*/
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void Sys_MakeCodeWriteable (unsigned long startaddr, unsigned long length)
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{
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int r;
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unsigned long addr;
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int psize = getpagesize();
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addr = (startaddr & ~(psize-1)) - psize;
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// fprintf(stderr, "writable code %lx(%lx)-%lx, length=%lx\n", startaddr,
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// addr, startaddr+length, length);
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r = mprotect((char*)addr, length + startaddr - addr + psize, 7);
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if (r < 0)
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Sys_Error("Protection change failed\n");
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}
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#endif
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