int
smbbufferputheader(SmbBuffer *b, SmbHeader *h, SmbPeerInfo *p)
{
SmbRawHeader *rh;
if (offsetof(SmbRawHeader, parameterwords[0]) > smbbufferwritespace(b))
return 0;
if (smbbufferwriteoffset(b) == 0) {
rh = (SmbRawHeader *)smbbufferwritepointer(b);
rh->protocol[0] = 0xff;
memcpy(rh->protocol + 1, "SMB", 3);
rh->flags = SMB_FLAGS_SERVER_TO_REDIR | SmbHeaderFlagCaseless;
rh->command = h->command;
smbhnputs(rh->flags2, BASE_FLAGS | (smbsendunicode(p) ? SMB_FLAGS2_UNICODE : 0));
memset(rh->extra, 0, sizeof(rh->extra));
if (!smbbufferputbytes(b, nil, offsetof(SmbRawHeader, parameterwords[0])))
return 0;
rh->wordcount = h->wordcount;
}
else {
rh = (SmbRawHeader *)smbbufferreadpointer(b);
smbbufferputb(b, h->wordcount);
}
rh->status[0] = h->errclass;
rh->status[1] = 0;
smbhnputs(rh->status + 2, h->error);
smbhnputs(rh->tid, h->tid);
smbhnputs(rh->pid, h->pid);
smbhnputs(rh->uid, h->uid);
smbhnputs(rh->mid, h->mid);
return 1;
}
int
smbclientopen(SmbClient *c, uint16_t mode, char *name, uint8_t *errclassp,
uint16_t *errorp,
uint16_t *fidp, uint16_t *attrp, uint32_t *mtimep, uint32_t *sizep,
uint16_t *accessallowedp, char **errmsgp)
{
SmbBuffer *b;
SmbHeader h;
uint32_t bytecountfixup;
int32_t n;
uint8_t *pdata;
uint16_t bytecount;
b = smbbuffernew(65535);
h = c->protoh;
h.tid = c->sharetid;
h.command = SMB_COM_OPEN;
h.wordcount = 2;
smbbufferputheader(b, &h, &c->peerinfo);
smbbufferputs(b, mode);
smbbufferputs(b, 0);
bytecountfixup = smbbufferwriteoffset(b);
smbbufferputs(b, 0);
smbbufferputb(b, 4);
smbbufferputstring(b, &c->peerinfo, SMB_STRING_REVPATH, name);
smbbufferfixuprelatives(b, bytecountfixup);
nbsswrite(c->nbss, smbbufferreadpointer(b), smbbufferwriteoffset(b));
smbbufferreset(b);
n = nbssread(c->nbss, smbbufferwritepointer(b), smbbufferwritespace(b));
if (n < 0) {
smbstringprint(errmsgp, "read error: %r");
smbbufferfree(&b);
return 0;
}
smbbuffersetreadlen(b, n);
if (!smbbuffergetandcheckheader(b, &h, h.command, 7, &pdata, &bytecount, errmsgp)) {
smbbufferfree(&b);
return 0;
}
if (h.errclass) {
*errclassp = h.errclass;
*errorp = h.error;
smbbufferfree(&b);
return 0;
}
*fidp = smbnhgets(pdata); pdata += 2;
*attrp = smbnhgets(pdata); pdata += 2;
*mtimep = smbnhgetl(pdata); pdata += 4;
*sizep = smbnhgets(pdata); pdata += 4;
*accessallowedp = smbnhgets(pdata);
return 1;
}
