1 /*
2  * Copy WEP key to ethernet device.
3  */
4 
5 #include "std.h"
6 #include "dat.h"
7 
8 static int
9 wepclient(Conv *c)
10 {
11 	char *dev, buf[128], *p, *kp;
12 	Key *k;
13 	int ret, fd, cfd;
14 	
15 	fd = cfd = -1;
16 	ret = -1;
17 	dev = nil;
18 	
19 	if((k = keylookup("%A !key1?", c->attr)) == nil
20 	&& (k = keylookup("%A !key2?", c->attr)) == nil
21 	&& (k = keylookup("%A !key3?", c->attr)) == nil){
22 		werrstr("cannot find wep keys");
23 		goto out;
24 	}
25 	if(convreadm(c, &dev) < 0)
26 		return -1;
27 	if(dev[0] != '#' || dev[1] != 'l'){
28 		werrstr("not an ethernet device: %s", dev);
29 		goto out;
30 	}
31 	snprint(buf, sizeof buf, "%s!0", dev);
32 	if((fd = dial(buf, 0, 0, &cfd)) < 0)
33 		goto out;
34 	if(!(p = strfindattr(k->privattr, kp="!key1"))
35 	&& !(p = strfindattr(k->privattr, kp="key2"))
36 	&& !(p = strfindattr(k->privattr, kp="key3"))){
37 		werrstr("lost key");
38 		goto out;
39 	}
40 	if(fprint(cfd, "%s %q", kp+1, p) < 0)
41 		goto out;
42 	if((p = strfindattr(k->attr, "essid")) != nil
43 	&& fprint(cfd, "essid %q", p) < 0)
44 		goto out;
45 	if(fprint(cfd, "crypt on") < 0)
46 		goto out;
47 	ret = 0;
48 
49 out:
50 	free(dev);
51 	if(cfd >= 0)
52 		close(cfd);
53 	if(fd >= 0)
54 		close(fd);
55 	keyclose(k);
56 	return ret;
57 }
58 
59 static int
60 wepcheck(Key *k)
61 {
62 	if(strfindattr(k->privattr, "!key1") == nil
63 	&& strfindattr(k->privattr, "!key2") == nil
64 	&& strfindattr(k->privattr, "!key3") == nil){
65 		werrstr("need !key1, !key2, or !key3 attribute");
66 		return -1;
67 	}
68 	return 0;
69 }
70 
71 static Role weproles[] = {
72 	"client",	wepclient,
73 	0
74 };
75 
76 Proto wep = 
77 {
78 	"wep",
79 	weproles,
80 	nil,
81 	wepcheck,
82 	nil
83 };