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/************************************************************************
* recommend Analyses the installation, and makes *
* recommendations about suid/sgid modes *
************************************************************************/
/*$Id: recommend.c,v 1.16 1999/10/20 04:47:45 guenther Exp $*/
#include "includes.h"
#define PERMIS (S_IRWXU|S_IRWXG&~S_IWGRP|S_IRWXO&~S_IWOTH)
char mailspooldir[]=MAILSPOOLDIR;
const char dirsep[]=DIRSEP,
*const checkf[]={"/bin/mail","/bin/lmail","/usr/lib/sendmail",
"/usr/lib/smail",0};
int main(argc,argv)const int argc;const char*const argv[];
{ struct group*grp;struct stat stbuf;gid_t gid=(gid_t)-1;
const char*const*p;mode_t sgid=0;int chmdir=0;
if(argc!=3)
{ fprintf(stderr,"Please run this program via 'make recommend'\n");
return EX_USAGE;
}
strchr(mailspooldir,'\0')[-1]='\0'; /* strip last character */
for(p=checkf;*p;p++)
if(!stat(*p,&stbuf)&&stbuf.st_mode&S_ISGID)
{ if(stbuf.st_mode&S_ISGID)
sgid=S_ISGID,gid=stbuf.st_gid;
break;
}
if(!stat(mailspooldir,&stbuf)&&!(stbuf.st_mode&S_IWOTH))
if(stbuf.st_mode&S_ISVTX)
chmdir=2;
else
{ if(!(stbuf.st_mode&S_IWGRP))
chmdir=1;
sgid=S_ISGID;gid=stbuf.st_gid;
}
if(gid!=stbuf.st_gid)
sgid=0;
printf("chown root %s\n",argv[1]);
if(sgid)
if(grp=getgrgid(gid))
printf("chgrp %s %s %s\n",grp->gr_name,argv[1],argv[2]);
else
printf("chgrp %u %s %s\n",(unsigned)gid,argv[1],argv[2]);
printf("chmod %lo %s\n",(unsigned long)(sgid|S_ISUID|PERMIS),argv[1]);
if(sgid)
printf("chmod %lo %s\n",(unsigned long)(sgid|PERMIS),argv[2]);
else if(chmdir==1)
goto nogchmod;
if(0)
printf("chmod %c+w %s/.\n",chmdir==1?'g':'a',mailspooldir);
nogchmod:
return EXIT_SUCCESS;
}
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