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#include <u.h>
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#include <libc.h>
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#include <authsrv.h>
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#include <bio.h>
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#include <ndb.h>
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int
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authdial(char *netroot, char *dom)
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{
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	char *p;
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	int rv;
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	if(dom == nil)
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		/* look for one relative to my machine */
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		return dial(netmkaddr("$auth", netroot, "ticket"), 0, 0, 0);
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	/* look up an auth server in an authentication domain */
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	p = csgetvalue(netroot, "authdom", dom, "auth", nil);
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	/* if that didn't work, just try the IP domain */
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	if(p == nil)
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		p = csgetvalue(netroot, "dom", dom, "auth", nil);
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	/*
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	 * if that didn't work, try p9auth.$dom.  this is very helpful if
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	 * you can't edit /lib/ndb.
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	 */
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	if(p == nil)
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		p = smprint("p9auth.%s", dom);
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	if(p == nil){			/* should no longer ever happen */
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		werrstr("no auth server found for %s", dom);
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		return -1;
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	}
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	rv = dial(netmkaddr(p, netroot, "ticket"), 0, 0, 0);
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	free(p);
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	return rv;
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}