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- #include <u.h>
- #include <libc.h>
- #include <venti.h>
- int
- vtsrvhello(VtConn *z)
- {
- VtFcall tx, rx;
- Packet *p;
- if((p = vtrecv(z)) == nil)
- return -1;
- if(vtfcallunpack(&tx, p) < 0){
- packetfree(p);
- return -1;
- }
- packetfree(p);
- if(tx.msgtype != VtThello){
- vtfcallclear(&tx);
- werrstr("bad packet type %d; want Thello %d", tx.msgtype, VtThello);
- return -1;
- }
- if(tx.tag != 0){
- vtfcallclear(&tx);
- werrstr("bad tag in hello");
- return -1;
- }
- if(strcmp(tx.version, z->version) != 0){
- vtfcallclear(&tx);
- werrstr("bad version in hello");
- return -1;
- }
- vtfree(z->uid);
- z->uid = tx.uid;
- tx.uid = nil;
- vtfcallclear(&tx);
- memset(&rx, 0, sizeof rx);
- rx.msgtype = VtRhello;
- rx.tag = tx.tag;
- rx.sid = "anonymous";
- if((p = vtfcallpack(&rx)) == nil)
- return -1;
- if(vtsend(z, p) < 0)
- return -1;
- return 0;
- }
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