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