/*
* this just proxies what the factotum tells it to.
*/
AuthInfo*
fsfauth_proxy(CFid *fid, AuthRpc *rpc, AuthGetkey *getkey, char *params)
{
char *buf;
int m, n, ret;
AuthInfo *a;
char oerr[ERRMAX];
rerrstr(oerr, sizeof oerr);
werrstr("UNKNOWN AUTH ERROR");
if(dorpc(rpc, "start", params, strlen(params), getkey) != ARok){
werrstr("fauth_proxy start: %r");
return nil;
}
buf = malloc(AuthRpcMax);
if(buf == nil)
return nil;
for(;;){
switch(dorpc(rpc, "read", nil, 0, getkey)){
case ARdone:
free(buf);
a = auth_getinfo(rpc);
errstr(oerr, sizeof oerr); /* no error, restore whatever was there */
return a;
case ARok:
if(fswrite(fid, rpc->arg, rpc->narg) != rpc->narg){
werrstr("auth_proxy write fid: %r");
goto Error;
}
break;
case ARphase:
n = 0;
memset(buf, 0, AuthRpcMax);
while((ret = dorpc(rpc, "write", buf, n, getkey)) == ARtoosmall){
if(atoi(rpc->arg) > AuthRpcMax)
break;
m = fsread(fid, buf+n, atoi(rpc->arg)-n);
if(m <= 0){
if(m == 0)
werrstr("auth_proxy short read: %s", buf);
goto Error;
}
n += m;
}
if(ret != ARok){
werrstr("auth_proxy rpc write: %s: %r", buf);
goto Error;
}
break;
default:
werrstr("auth_proxy rpc: %r");
goto Error;
}
}
Error:
free(buf);
return nil;
}
static int
_authread(Afid *afid, void *data, int count)
{
AuthInfo *ai;
switch(auth_rpc(afid->rpc, "read", nil, 0)){
case ARdone:
ai = auth_getinfo(afid->rpc);
if(ai == nil)
return -1;
auth_freeAI(ai);
if(chatty9p)
fprint(2, "authenticate %s/%s: ok\n", afid->uname, afid->aname);
afid->authok = 1;
return 0;
case ARok:
if(count < afid->rpc->narg){
werrstr("authread count too small");
return -1;
}
count = afid->rpc->narg;
memmove(data, afid->rpc->arg, count);
return count;
case ARphase:
default:
werrstr("authrpc botch");
return -1;
}
}
AuthInfo*
auth_response(Chalstate *c)
{
int ret;
AuthInfo *ai;
ai = nil;
if(c->afd < 0){
werrstr("auth_response: connection not open");
return nil;
}
if(c->resp == nil){
werrstr("auth_response: nil response");
return nil;
}
if(c->nresp == 0){
werrstr("auth_response: unspecified response length");
return nil;
}
if(c->user){
if(auth_rpc(c->rpc, "write", c->user, strlen(c->user)) != ARok){
/*
* if this fails we're out of phase with factotum.
* give up.
*/
goto Out;
}
}
if(auth_rpc(c->rpc, "write", c->resp, c->nresp) != ARok){
/*
* don't close the connection -- maybe we'll try again.
*/
return nil;
}
switch(ret = auth_rpc(c->rpc, "read", nil, 0)){
case ARok:
default:
werrstr("factotum protocol botch %d %s", ret, c->rpc->ibuf);
break;
case ARdone:
ai = auth_getinfo(c->rpc);
break;
}
Out:
close(c->afd);
auth_freerpc(c->rpc);
c->afd = -1;
c->rpc = nil;
return ai;
}
/*
* this just proxies what the factotum tells it to.
*/
AuthInfo*
fauth_proxy(FFid *f, AuthRpc *rpc, AuthGetkey *getkey, char *params)
{
char *buf;
int m, n, ret;
AuthInfo *a;
if(rpc == nil){
return nil;
}
if(dorpc(rpc, "start", params, strlen(params), getkey) != ARok){
return nil;
}
buf = emalloc(AuthRpcMax);
if(buf == nil)
return nil;
for(;;){
switch(dorpc(rpc, "read", nil, 0, getkey)){
case ARdone:
free(buf);
a = auth_getinfo(rpc);
return a;
case ARok:
if(_9pwrite(f, rpc->arg, rpc->narg) != rpc->narg){
goto Error;
}
break;
case ARphase:
n = 0;
memset(buf, 0, AuthRpcMax);
while((ret = dorpc(rpc, "write", buf, n, getkey)) == ARtoosmall){
m = atoi(rpc->arg);
if(m <= n || m > AuthRpcMax)
break;
m = _9pread(f, buf + n, m - n);
if(m <= 0)
goto Error;
n += m;
}
if(ret != ARok)
goto Error;
break;
default:
goto Error;
}
}
Error:
free(buf);
return nil;
}
int
authRead(Fid* afid, void* data, int count)
{
AuthInfo *ai;
AuthRpc *rpc;
if((rpc = afid->rpc) == nil){
werrstr("not an auth fid");
return -1;
}
switch(auth_rpc(rpc, "read", nil, 0)){
default:
werrstr("fossil authRead: auth protocol not finished");
return -1;
case ARdone:
if((ai = auth_getinfo(rpc)) == nil){
werrstr("%r");
break;
}
if(ai->cuid == nil || *ai->cuid == '\0'){
werrstr("auth with no cuid");
auth_freeAI(ai);
break;
}
assert(afid->cuname == nil);
afid->cuname = vtstrdup(ai->cuid);
auth_freeAI(ai);
if(Dflag)
fprint(2, "authRead cuname %s\n", afid->cuname);
assert(afid->uid == nil);
if((afid->uid = uidByUname(afid->cuname)) == nil){
werrstr("unknown user %#q", afid->cuname);
break;
}
return 0;
case ARok:
if(count < rpc->narg){
werrstr("not enough data in auth read");
break;
}
memmove(data, rpc->arg, rpc->narg);
return rpc->narg;
case ARphase:
werrstr("%r");
break;
}
return -1;
}
int
authread(File *file, uchar *data, int count)
{
AuthInfo *ai;
AuthRpc *rpc;
Chan *chan;
chan = file->cp;
if((rpc = file->auth) == nil){
snprint(chan->err, sizeof(chan->err),
"not an auth fid");
return -1;
}
switch(auth_rpc(rpc, "read", nil, 0)){
default:
snprint(chan->err, sizeof(chan->err),
"authread: auth protocol not finished");
return -1;
case ARdone:
if((ai = auth_getinfo(rpc)) == nil)
goto Phase;
file->uid = strtouid(ai->cuid);
if(file->uid < 0){
snprint(chan->err, sizeof(chan->err),
"unknown user '%s'", ai->cuid);
auth_freeAI(ai);
return -1;
}
auth_freeAI(ai);
return 0;
case ARok:
if(count < rpc->narg){
snprint(chan->err, sizeof(chan->err),
"not enough data in auth read");
return -1;
}
memmove(data, rpc->arg, rpc->narg);
return rpc->narg;
case ARphase:
Phase:
rerrstr(chan->err, sizeof(chan->err));
return -1;
}
}
