1 056fe1ba 2003-11-23 devnull #include <u.h>
 2 056fe1ba 2003-11-23 devnull #include <libc.h>
 3 056fe1ba 2003-11-23 devnull #include <venti.h>
 4 056fe1ba 2003-11-23 devnull 
 5 056fe1ba 2003-11-23 devnull int
 6 056fe1ba 2003-11-23 devnull vtsrvhello(VtConn *z)
 7 056fe1ba 2003-11-23 devnull {
 8 056fe1ba 2003-11-23 devnull 	VtFcall tx, rx;
 9 056fe1ba 2003-11-23 devnull 	Packet *p;
10 056fe1ba 2003-11-23 devnull 
11 056fe1ba 2003-11-23 devnull 	if((p = vtrecv(z)) == nil)
12 056fe1ba 2003-11-23 devnull 		return 0;
13 056fe1ba 2003-11-23 devnull 
14 056fe1ba 2003-11-23 devnull 	if(vtfcallunpack(&tx, p) < 0){
15 056fe1ba 2003-11-23 devnull 		packetfree(p);
16 056fe1ba 2003-11-23 devnull 		return 0;
17 056fe1ba 2003-11-23 devnull 	}
18 056fe1ba 2003-11-23 devnull 	packetfree(p);
19 056fe1ba 2003-11-23 devnull 
20 056fe1ba 2003-11-23 devnull 	if(tx.type != VtThello){
21 056fe1ba 2003-11-23 devnull 		vtfcallclear(&tx);
22 056fe1ba 2003-11-23 devnull 		werrstr("bad packet type %d; want Thello %d", tx.type, VtThello);
23 056fe1ba 2003-11-23 devnull 		return 0;
24 056fe1ba 2003-11-23 devnull 	}
25 056fe1ba 2003-11-23 devnull 	if(tx.tag != 0){
26 056fe1ba 2003-11-23 devnull 		vtfcallclear(&tx);
27 056fe1ba 2003-11-23 devnull 		werrstr("bad tag in hello");
28 056fe1ba 2003-11-23 devnull 		return 0;
29 056fe1ba 2003-11-23 devnull 	}
30 056fe1ba 2003-11-23 devnull 	if(strcmp(tx.version, z->version) != 0){
31 056fe1ba 2003-11-23 devnull 		vtfcallclear(&tx);
32 056fe1ba 2003-11-23 devnull 		werrstr("bad version in hello");
33 056fe1ba 2003-11-23 devnull 		return 0;
34 056fe1ba 2003-11-23 devnull 	}
35 056fe1ba 2003-11-23 devnull 	vtfree(z->uid);
36 056fe1ba 2003-11-23 devnull 	z->uid = tx.uid;
37 056fe1ba 2003-11-23 devnull 	tx.uid = nil;
38 056fe1ba 2003-11-23 devnull 	vtfcallclear(&tx);
39 056fe1ba 2003-11-23 devnull 
40 056fe1ba 2003-11-23 devnull 	memset(&rx, 0, sizeof rx);
41 056fe1ba 2003-11-23 devnull 	rx.type = VtRhello;
42 056fe1ba 2003-11-23 devnull 	rx.tag = tx.tag;
43 056fe1ba 2003-11-23 devnull 	rx.sid = "anonymous";
44 056fe1ba 2003-11-23 devnull 	if((p = vtfcallpack(&rx)) == nil)
45 056fe1ba 2003-11-23 devnull 		return 0;
46 056fe1ba 2003-11-23 devnull 	if(vtsend(z, p) < 0)
47 056fe1ba 2003-11-23 devnull 		return 0;
48 056fe1ba 2003-11-23 devnull 
49 056fe1ba 2003-11-23 devnull 	return 1;
50 056fe1ba 2003-11-23 devnull }