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  1. /*    Copyright (C) 1998-2003 XIAO, Gang of Universite de Nice - Sophia Antipolis
  2.  *
  3.  *  This program is free software; you can redistribute it and/or modify
  4.  *  it under the terms of the GNU General Public License as published by
  5.  *  the Free Software Foundation; either version 2 of the License, or
  6.  *  (at your option) any later version.
  7.  *
  8.  *  This program is distributed in the hope that it will be useful,
  9.  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  10.  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11.  *  GNU General Public License for more details.
  12.  *
  13.  *  You should have received a copy of the GNU General Public License
  14.  *  along with this program; if not, write to the Free Software
  15.  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  16.  */
  17.  
  18.         /* Check type of a file */
  19.  
  20. /*************** Customization: change values hereafter ****************/
  21.  
  22.         /* limit of data buffers */
  23. #define buflim 1024*1024*16
  24.  
  25. /***************** Nothing should need change hereafter *****************/
  26.  
  27. #include "../wims.h"
  28.  
  29. char filename[1024]="";
  30. char *filebuf;
  31. int filelen=0;
  32.  
  33. void *xmalloc(size_t n)
  34. {
  35.     void *p;
  36.     p=malloc(n);
  37.     if(p==NULL) exit(1);
  38.     return p;
  39. }
  40.  
  41.         /* get the file */
  42. void prepare_file(void)
  43. {
  44.     FILE *f;
  45.     long int flen;
  46.  
  47.     filelen=0;
  48.     f=fopen(filename,"r"); if(f==NULL) return;
  49.     fseek(f,0,SEEK_END);flen=ftell(f); fseek(f,0,SEEK_SET);
  50.     if(flen>buflim) return;
  51.     filebuf=xmalloc(2*flen+1024);flen=fread(filebuf,1,flen,f);
  52.     fclose(f);
  53.     if(flen>0 && flen<buflim) filebuf[flen]=0; else flen=0;
  54.     filelen=flen;
  55. }
  56.  
  57. int main(int argc, char *argv[])
  58. {
  59.     char *ftype="text";
  60.     char *p;
  61.     char *mod, *unt;
  62.  
  63.     unt=getenv("untrust");
  64.     if(unt!=NULL && strcasecmp(unt,"yes")==0) return 1;
  65.     mod=getenv("w_module");
  66.     if(mod==NULL) p=argv[1]; else p=getenv("wims_exec_parm");
  67.     if(p==NULL || *p==0) return 1;
  68.     snprintf(filename,sizeof(filename)-128,"%s",p);
  69.     prepare_file();
  70.     for(p=filebuf;p<filebuf+filelen;p++) {
  71.         if((*p>=0 && *p<=6) || (127&*p)<=1)
  72.             {ftype="binary"; goto fin;}
  73.     }
  74.     for(p=strchr(filebuf,'<'); p!=NULL; p=strchr(p,'<')) {
  75.         p++;
  76.         if((strncasecmp(p,"body",4)==0 && !isalnum(*(p+4))) ||
  77.            (strncasecmp(p,"html",4)==0 && !isalnum(*(p+4))) ||
  78.            (strncasecmp(p,"img",3)==0 && isspace(*(p+3))) ||
  79.            strncasecmp(p,"p>",2)==0 ||
  80.            strncasecmp(p,"/a>",3)==0) {
  81.             ftype="html"; goto fin;
  82.         }
  83.     }
  84.     if(strstr(filebuf,"\\begin{")!=NULL ||
  85.        strstr(filebuf,"\\end{")!=NULL ||
  86.        (strchr(filebuf,'$')!=NULL && strchr(filebuf,'\\')!=NULL &&
  87.         strchr(filebuf,'{')!=NULL)) {
  88.         ftype="latex"; goto fin;
  89.     }
  90.     fin: printf("%s",ftype);
  91.     return 0;
  92. }
  93.  
  94.