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WebSVN – planix.SVN – Blame – /os/branches/feature_unix/sys/src/cmd/auth/factotum/wep.c – Rev 2

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/*
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 *  The caller supplies the device, we do the flavoring.  There
3 
 *  are no phases, everything happens in the init routine.
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 */
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#include "dat.h"
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typedef struct State State;
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struct State
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{
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	Key *key;
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};
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enum
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{
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	HavePass,
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};
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static int
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wepinit(Proto*, Fsstate *fss)
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{
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	int ret;
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	Key *k;
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	Keyinfo ki;
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	State *s;
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	/* find a key with at least one password */
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	mkkeyinfo(&ki, fss, nil);
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	ret = findkey(&k, &ki, "!key1?");
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	if(ret != RpcOk)
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		ret = findkey(&k, &ki, "!key2?");
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	if(ret != RpcOk)
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		ret = findkey(&k, &ki, "!key3?");
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	if(ret != RpcOk)
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		return ret;
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	setattrs(fss->attr, k->attr);
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	s = emalloc(sizeof(*s));
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	s->key = k;
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	fss->ps = s;
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	fss->phase = HavePass;
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	return RpcOk;
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}
45 
 
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static void
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wepclose(Fsstate *fss)
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{
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	State *s;
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	s = fss->ps;
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	if(s->key)
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		closekey(s->key);
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	free(s);
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}
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static int
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wepread(Fsstate *fss, void*, uint*)
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{
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	return phaseerror(fss, "read");
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}
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static int
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wepwrite(Fsstate *fss, void *va, uint n)
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{
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	char *data = va;
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	State *s;
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	char dev[64];
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	int fd, cfd;
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	int rv;
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	char *p;
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	/* get the device */
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	if(n > sizeof(dev)-5){
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		werrstr("device too long");
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		return RpcErrstr;
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	}
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	memmove(dev, data, n);
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	dev[n] = 0;
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	s = fss->ps;
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82 
	/* legal? */
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	if(dev[0] != '#' || dev[1] != 'l'){
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		werrstr("%s not an ether device", dev);
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		return RpcErrstr;
86 
	}
87 
	strcat(dev, "!0");
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	fd = dial(dev, 0, 0, &cfd);
89 
	if(fd < 0)
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		return RpcErrstr;
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	/* flavor it with passwords, essid, and turn on wep */
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	rv = RpcErrstr;
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	p = _strfindattr(s->key->privattr, "!key1");
95 
	if(p != nil)
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		if(fprint(cfd, "key1 %s", p) < 0)
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			goto out;
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	p = _strfindattr(s->key->privattr, "!key2");
99 
	if(p != nil)
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		if(fprint(cfd, "key2 %s", p) < 0)
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			goto out;
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	p = _strfindattr(s->key->privattr, "!key3");
103 
	if(p != nil)
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		if(fprint(cfd, "key3 %s", p) < 0)
105 
			goto out;
106 
	p = _strfindattr(fss->attr, "essid");
107 
	if(p != nil)
108 
		if(fprint(cfd, "essid %s", p) < 0)
109 
			goto out;
110 
	if(fprint(cfd, "crypt on") < 0)
111 
		goto out;
112 
	rv = RpcOk;
113 
out:
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	close(fd);
115 
	close(cfd);
116 
	return rv;
117 
}
118 
 
119 
Proto wep =
120 
{
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.name=		"wep",
122 
.init=		wepinit,
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.write=		wepwrite,
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.read=		wepread,
125 
.close=		wepclose,
126 
.addkey=	replacekey,
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.keyprompt=	"!key1? !key2? !key3? essid?",
128 
};