396 lines
9.6 KiB
C
396 lines
9.6 KiB
C
/* This module, and the entire FvwmM4 program, and the concept for
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* interfacing this module to the Window Manager, are all original work
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* by Robert Nation
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*
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* Copyright 1994, Robert Nation
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* No guarantees or warantees or anything
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* are provided or implied in any way whatsoever. Use this program at your
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* own risk. Permission to use this program for any purpose is given,
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* as long as the copyright is kept intact. */
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#define TRUE 1
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#define FALSE 0
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#include "config.h"
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#include <stdio.h>
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#include <signal.h>
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#include <fcntl.h>
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#include <string.h>
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#include <sys/wait.h>
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#include <sys/time.h>
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#include <unistd.h>
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#include <ctype.h>
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#include <stdlib.h>
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#include <pwd.h>
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netdb.h>
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#include <X11/Xproto.h>
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#include <X11/Xatom.h>
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#include <X11/Intrinsic.h>
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#include "../../fvwm/module.h"
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#include "FvwmCpp.h"
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#include "../../libs/fvwmlib.h"
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#include <X11/StringDefs.h>
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#include <X11/Intrinsic.h>
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#include <X11/Shell.h>
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#define Resolution(pixels, mm) ((((pixels) * 100000 / (mm)) + 50) / 100)
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char *MyName;
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int fd[2];
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struct list *list_root = NULL;
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int ScreenWidth, ScreenHeight;
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int Mscreen;
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long Vx, Vy;
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static char *MkDef(char *name, char *def);
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static char *MkNum(char *name,int def);
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static char *cpp_defs(Display *display, const char *host, char *m4_options, char *config_file);
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#define MAXHOSTNAME 255
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#define EXTRA 20
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char *cpp_prog = FVWM_CPP; /* Name of the cpp program */
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char cpp_options[BUFSIZ];
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char cpp_outfile[BUFSIZ]="";
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/***********************************************************************
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*
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* Procedure:
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* main - start of module
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*
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***********************************************************************/
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int main(int argc, char **argv)
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{
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Display *dpy; /* which display are we talking to */
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char *temp, *s;
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char *display_name = NULL;
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char *filename = NULL;
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char *tmp_file, read_string[80],delete_string[80];
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int i,cpp_debug = 0;
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strcpy(cpp_options,"");
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/* Record the program name for error messages */
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temp = argv[0];
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s=strrchr(argv[0], '/');
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if (s != NULL)
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temp = s + 1;
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MyName = safemalloc(strlen(temp)+2);
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strcpy(MyName,"*");
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strcat(MyName, temp);
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if(argc < 6)
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{
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fprintf(stderr,"%s Version %s should only be executed by fvwm!\n",MyName,
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VERSION);
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exit(1);
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}
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/* Open the X display */
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if (!(dpy = XOpenDisplay(display_name)))
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{
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fprintf(stderr,"%s: can't open display %s", MyName,
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XDisplayName(display_name));
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exit (1);
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}
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Mscreen= DefaultScreen(dpy);
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ScreenHeight = DisplayHeight(dpy,Mscreen);
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ScreenWidth = DisplayWidth(dpy,Mscreen);
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/* We should exit if our fvwm pipes die */
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signal (SIGPIPE, DeadPipe);
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fd[0] = atoi(argv[1]);
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fd[1] = atoi(argv[2]);
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for(i=6;i<argc;i++)
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{
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/* leaving this in just in case-- any option starting with '-'
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will get passed on to cpp anyway */
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if(strcasecmp(argv[i],"-cppopt") == 0)
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{
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strlcat(cpp_options, argv[++i], sizeof(cpp_options));
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strlcat(cpp_options, " ", sizeof(cpp_options));
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}
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else if (strcasecmp(argv[i], "-cppprog") == 0)
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{
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cpp_prog = argv[++i];
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}
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else if(strcasecmp(argv[i], "-outfile") == 0)
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{
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strlcpy(cpp_outfile,argv[++i],sizeof(cpp_outfile));
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}
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else if(strcasecmp(argv[i], "-debug") == 0)
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{
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cpp_debug = 1;
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}
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else if (strncasecmp(argv[i],"-",1) == 0)
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{
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/* pass on any other arguments starting with '-' to cpp */
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strlcat(cpp_options, argv[i],sizeof(cpp_options));
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strlcat(cpp_options, " ",sizeof(cpp_options));
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}
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else
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filename = argv[i];
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}
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/* If we don't have a cpp, stop right now. */
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if (!cpp_prog || cpp_prog[0] == '\0') {
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fprintf(stderr, "%s: no C preprocessor program specified\n", MyName);
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exit(1);
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}
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for(i=0;i<strlen(filename);i++)
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if((filename[i] == '\n')||(filename[i] == '\r'))
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{
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filename[i] = 0;
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}
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if (!(dpy = XOpenDisplay(display_name)))
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{
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fprintf(stderr,"%s: can't open display %s",
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MyName, XDisplayName(display_name));
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exit (1);
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}
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tmp_file = cpp_defs(dpy, display_name,cpp_options, filename);
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snprintf(read_string,sizeof(read_string),"read %s\n",tmp_file);
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SendInfo(fd,read_string,0);
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/* For a debugging version, we may wish to omit this part. */
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/* I'll let some cpp advocates clean this up */
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if(!cpp_debug)
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{
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snprintf(delete_string,sizeof(delete_string),"exec rm %s\n",tmp_file);
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SendInfo(fd,delete_string,0);
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}
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return 0;
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}
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static char *cpp_defs(Display *display, const char *host, char *cpp_options, char *config_file)
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{
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Screen *screen;
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Visual *visual;
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char client[MAXHOSTNAME], server[MAXHOSTNAME], *colon;
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char ostype[BUFSIZ];
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char options[BUFSIZ];
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static char tmp_name[BUFSIZ];
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struct hostent *hostname;
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char *vc; /* Visual Class */
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FILE *tmpf;
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struct passwd *pwent;
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int fd;
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/* Generate a temporary filename. Honor the TMPDIR environment variable,
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if set. Hope nobody deletes this file! */
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if (strlen(cpp_outfile) == 0) {
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if ((vc=getenv("TMPDIR"))) {
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strlcpy(tmp_name, vc, sizeof(tmp_name));
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} else {
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strlcpy(tmp_name, "/tmp", sizeof(tmp_name));
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}
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strlcat(tmp_name, "/fvwmrcXXXXXXXXXX", sizeof(tmp_name));
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mktemp(tmp_name);
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} else {
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strlcpy(tmp_name,cpp_outfile, sizeof(tmp_name));
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}
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if (*tmp_name == '\0')
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{
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perror("mktemp failed in cpp_defs");
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exit(0377);
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}
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/*
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** check to make sure it doesn't exist already, to prevent security hole
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*/
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if ((fd = open(tmp_name, O_WRONLY|O_EXCL|O_CREAT, 0600)) < 0)
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{
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perror("exclusive open for output file failed in cpp_defs");
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exit(0377);
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}
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close(fd);
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/*
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* Create the appropriate command line to run cpp, and
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* open a pipe to the command.
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*/
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strlcpy(options, cpp_prog, sizeof(options));
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strlcat(options, " ", sizeof(options));
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strlcat(options, cpp_options, sizeof(options));
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strlcat(options, " >", sizeof(options));
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strlcat(options, tmp_name, sizeof(options));
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tmpf = popen(options, "w");
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if (tmpf == NULL) {
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perror("Cannot open pipe to cpp");
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exit(0377);
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}
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gethostname(client,MAXHOSTNAME);
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getostype (ostype, sizeof ostype);
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hostname = gethostbyname(client);
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strlcpy(server, XDisplayName(host), sizeof(server));
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colon = strchr(server, ':');
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if (colon != NULL) *colon = '\0';
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if ((server[0] == '\0') || (!strcmp(server, "unix")))
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strlcpy(server, client, sizeof(server)); /* must be connected to :0 or unix:0 */
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/* TWM_TYPE is fvwm, for completeness */
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fputs(MkDef("TWM_TYPE", "fvwm"), tmpf);
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/* The machine running the X server */
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fputs(MkDef("SERVERHOST", server), tmpf);
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/* The machine running the window manager process */
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fputs(MkDef("CLIENTHOST", client), tmpf);
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if (hostname)
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fputs(MkDef("HOSTNAME", (char *)hostname->h_name), tmpf);
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else
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fputs(MkDef("HOSTNAME", (char *)client), tmpf);
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fputs(MkDef("OSTYPE", ostype), tmpf);
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pwent=getpwuid(geteuid());
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fputs(MkDef("USER", pwent->pw_name), tmpf);
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fputs(MkDef("HOME", getenv("HOME")), tmpf);
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fputs(MkNum("VERSION", ProtocolVersion(display)), tmpf);
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fputs(MkNum("REVISION", ProtocolRevision(display)), tmpf);
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fputs(MkDef("VENDOR", ServerVendor(display)), tmpf);
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fputs(MkNum("RELEASE", VendorRelease(display)), tmpf);
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screen = ScreenOfDisplay(display, Mscreen);
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visual = DefaultVisualOfScreen(screen);
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fputs(MkNum("WIDTH", DisplayWidth(display,Mscreen)), tmpf);
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fputs(MkNum("HEIGHT", DisplayHeight(display,Mscreen)), tmpf);
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fputs(MkNum("X_RESOLUTION",Resolution(screen->width,screen->mwidth)),tmpf);
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fputs(MkNum("Y_RESOLUTION",Resolution(screen->height,screen->mheight)),tmpf);
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fputs(MkNum("PLANES",DisplayPlanes(display, Mscreen)), tmpf);
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fputs(MkNum("BITS_PER_RGB", visual->bits_per_rgb), tmpf);
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fputs(MkNum("SCREEN", Mscreen), tmpf);
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switch(visual->class)
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{
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case(StaticGray):
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vc = "StaticGray";
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break;
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case(GrayScale):
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vc = "GrayScale";
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break;
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case(StaticColor):
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vc = "StaticColor";
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break;
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case(PseudoColor):
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vc = "PseudoColor";
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break;
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case(TrueColor):
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vc = "TrueColor";
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break;
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case(DirectColor):
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vc = "DirectColor";
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break;
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default:
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vc = "NonStandard";
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break;
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}
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fputs(MkDef("CLASS", vc), tmpf);
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if (visual->class != StaticGray && visual->class != GrayScale)
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fputs(MkDef("COLOR", "Yes"), tmpf);
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else
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fputs(MkDef("COLOR", "No"), tmpf);
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fputs(MkDef("FVWM_VERSION", VERSION), tmpf);
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/* Add options together */
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*options = '\0';
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#ifdef SHAPE
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strcat(options, "SHAPE ");
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#endif
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#ifdef XPM
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strcat(options, "XPM ");
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#endif
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strcat(options, "Cpp ");
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#ifdef NO_SAVEUNDERS
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strcat(options, "NO_SAVEUNDERS ");
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#endif
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fputs(MkDef("OPTIONS", options), tmpf);
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fputs(MkDef("FVWM_MODULEDIR", FVWM_MODULEDIR), tmpf);
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fputs(MkDef("FVWM_CONFIGDIR", FVWM_CONFIGDIR), tmpf);
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/*
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* At this point, we've sent the definitions to cpp. Just include
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* the fvwmrc file now.
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*/
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fprintf(tmpf, "#include \"%s\"\n", config_file);
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pclose(tmpf);
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return(tmp_name);
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}
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/***********************************************************************
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*
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* Procedure:
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* SIGPIPE handler - SIGPIPE means fvwm is dying
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*
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***********************************************************************/
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void DeadPipe(int nonsense)
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{
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exit(0);
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}
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static char *MkDef(char *name, char *def)
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{
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char *cp = NULL;
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int n;
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/* Get space to hold everything, if needed */
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n = EXTRA + strlen(name) + strlen(def);
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cp = safemalloc(n);
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sprintf(cp, "#define %s %s\n",name,def);
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return(cp);
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}
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static char *MkNum(char *name,int def)
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{
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char num[20];
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sprintf(num, "%d", def);
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return(MkDef(name, num));
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}
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