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#include <u.h>
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#include <libc.h>
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#include <auth.h>
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void
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usage(void)
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{
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	fprint(2, "usage: auth/challenge 'params'\n");
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	exits("usage");
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}
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void
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main(int argc, char **argv)
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{
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	char buf[128], bufu[128];
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	int afd, n;
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	AuthInfo *ai;
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	AuthRpc *rpc;
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	Chalstate *c;
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	ARGBEGIN{
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	default:
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		usage();
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	}ARGEND
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	if(argc != 1)
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		usage();
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	if((afd = open("/mnt/factotum/rpc", ORDWR)) < 0)
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		sysfatal("open /mnt/factotum/rpc: %r");
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	rpc = auth_allocrpc(afd);
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	if(rpc == nil)
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		sysfatal("auth_allocrpc: %r");
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	if((c = auth_challenge("%s", argv[0])) == nil)
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		sysfatal("auth_challenge: %r");
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	print("challenge: %s\n", c->chal);
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	print("user:");
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	n = read(0, bufu, sizeof bufu);
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	if(n > 0){
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		bufu[n-1] = '\0';
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		c->user = bufu;
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	}
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	print("response: ");
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	n = read(0, buf, sizeof buf);
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	if(n < 0)
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		sysfatal("read: %r");
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	if(n == 0)
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		exits(nil);
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	c->nresp = n-1;
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	c->resp = buf;
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	if((ai = auth_response(c)) == nil)
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		sysfatal("auth_response: %r");
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	print("%s %s\n", ai->cuid, ai->suid);
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}