104 lines
2.7 KiB
C
104 lines
2.7 KiB
C
/*
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dsstream.c
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Copyright (C) 2002 Petr Vandrovec
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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Revision history:
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1.00 2002, January 20 Petr Vandrovec <vandrove@vc.cvut.cz>
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Initial revision.
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1.01 2002, January 26 Petr Vandrovec <vandrove@vc.cvut.cz>
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Require writeable replica.
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*/
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#include <ncp/nwcalls.h>
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#include "nwnet_i.h"
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static NWDSCCODE __NWDSOpenStreamV0(
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NWCONN_HANDLE conn,
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nuint32 qflags,
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NWObjectID objectID,
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Buf_T* attrName,
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nuint32* fileHandle,
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nuint32* fileSize) {
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NWDSCCODE err;
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NW_FRAGMENT rq_frag[2];
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NW_FRAGMENT rp_frag[1];
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unsigned char rq_b[12];
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unsigned char rp_b[8];
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DSET_LH(rq_b, 0, 0); /* version */
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DSET_LH(rq_b, 4, qflags);
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DSET_HL(rq_b, 8, objectID);
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rq_frag[0].fragAddr.ro = rq_b;
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rq_frag[0].fragSize = sizeof(rq_b);
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rq_frag[1].fragAddr.ro = NWDSBufRetrieve(attrName, &rq_frag[1].fragSize);
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rp_frag[0].fragAddr.rw = rp_b;
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rp_frag[0].fragSize = 8;
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err = NWCFragmentRequest(conn, DSV_OPEN_STREAM, 2, rq_frag, 1, rp_frag, NULL);
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if (err)
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return err;
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if (rp_frag[0].fragSize < 8)
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return ERR_INVALID_SERVER_RESPONSE;
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*fileHandle = DVAL_LH(rp_b, 0);
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*fileSize = DVAL_LH(rp_b, 4);
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return 0;
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}
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NWDSCCODE __NWDSOpenStream(
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NWDSContextHandle ctx,
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const NWDSChar* objectName,
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const NWDSChar* attrName,
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nflag32 flags,
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NWCONN_HANDLE* rconn,
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unsigned char fh[6],
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ncp_off64_t* size) {
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NWDSCCODE err;
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char rq_b[DEFAULT_MESSAGE_LEN];
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NWCONN_HANDLE conn;
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NWObjectID objID;
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Buf_T bufAttrName;
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nuint32 fh32;
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nuint32 size32;
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if (!objectName || !attrName || !rconn || !fh) {
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return ERR_NULL_POINTER;
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}
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NWDSSetupBuf(&bufAttrName, rq_b, sizeof(rq_b));
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err = NWDSCtxBufString(ctx, &bufAttrName, attrName);
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if (err)
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return err;
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err = NWDSResolveName2(ctx, objectName, DS_RESOLVE_WRITEABLE, &conn, &objID);
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if (err)
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return err;
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err = __NWDSOpenStreamV0(conn, flags, objID, &bufAttrName, &fh32, &size32);
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if (!err) {
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ConvertToNWfromDWORD(fh32, fh);
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*rconn = conn;
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if (size) {
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*size = size32;
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}
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} else {
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NWCCCloseConn(conn);
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}
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return err;
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}
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