twep.c - plan9port - [fork] Plan 9 from user space
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---
twep.c (1487B)
---
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 };