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#include <u.h>
#include <libc.h>
#include <bio.h>
#include <auth.h>
/*
* see if user is in the group noworld, i.e., has all file
* priviledges masked with 770, and all directories with
* 771, before checking access rights
*/
int
noworld(char *user)
{
Biobuf *b;
char *p;
int n;
b = Bopen("/adm/users", OREAD);
if(b == nil)
return 0;
while((p = Brdline(b, '\n')) != nil){
p[Blinelen(b)-1] = 0;
p = strchr(p, ':');
if(p == nil)
continue;
if(strncmp(p, ":noworld:", 9) == 0){
p += 9;
break;
}
}
n = strlen(user);
while(p != nil && *p != 0){
p = strstr(p, user);
if(p == nil)
break;
if(*(p-1) == ':' || *(p-1) == ',')
if(*(p+n) == ':' || *(p+n) == ',' || *(p+n) == 0){
Bterm(b);
return 1;
}
p++;
}
Bterm(b);
return 0;
}
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