version 1.1, 2015/07/02 17:52:53
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version 1.2, 2015/07/02 22:28:15
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/************************************************************************* |
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* (C) 2015 AITNET ltd - Sofia/Bulgaria - <misho@aitbg.com> |
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* by Michael Pounov <misho@openbsd-bg.org> |
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* |
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* $Author$ |
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* $Id$ |
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* |
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************************************************************************** |
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The ELWIX and AITNET software is distributed under the following |
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terms: |
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All of the documentation and software included in the ELWIX and AITNET |
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Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org> |
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Copyright 2004 - 2015 |
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by Michael Pounov <misho@elwix.org>. All rights reserved. |
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Redistribution and use in source and binary forms, with or without |
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modification, are permitted provided that the following conditions |
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are met: |
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1. Redistributions of source code must retain the above copyright |
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notice, this list of conditions and the following disclaimer. |
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2. Redistributions in binary form must reproduce the above copyright |
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notice, this list of conditions and the following disclaimer in the |
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documentation and/or other materials provided with the distribution. |
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3. All advertising materials mentioning features or use of this software |
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must display the following acknowledgement: |
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This product includes software developed by Michael Pounov <misho@elwix.org> |
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ELWIX - Embedded LightWeight unIX and its contributors. |
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4. Neither the name of AITNET nor the names of its contributors |
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may be used to endorse or promote products derived from this software |
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without specific prior written permission. |
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THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND |
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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SUCH DAMAGE. |
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*/ |
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#include "global.h" |
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/* |
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* rpc_cli_sendBLOB() - Send BLOB to server |
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* |
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* @cli = Client instance |
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* @var = BLOB variable |
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* @data = BLOB data |
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* @tout = BLOB live on server timeout in seconds, if =0 default timeout |
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* return: -1 error, 0 ok, 1 remote error |
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*/ |
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int |
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rpc_cli_sendBLOB(rpc_cli_t * __restrict cli, ait_val_t * __restrict var, |
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void * __restrict data, int tout) |
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{ |
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int ret, len; |
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uint8_t *pos; |
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struct tagBLOBHdr hdr; |
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struct pollfd pfd; |
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if (!cli || !var || !data) { |
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rpc_SetErr(EINVAL, "Invalid arguments"); |
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return -1; |
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} else |
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memset(&hdr, 0, sizeof hdr); |
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rpc_addPktSession(&hdr.hdr_session, cli->cli_parent); |
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hdr.hdr_cmd = set; |
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hdr.hdr_var = 0; |
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hdr.hdr_ret = tout; |
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hdr.hdr_len = htonl(AIT_LEN(var)); |
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/* send SET request */ |
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pfd.fd = cli->cli_sock; |
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pfd.events = POLLOUT; |
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if ((ret = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) == -1 || |
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pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) { |
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LOGERR; |
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return -1; |
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} |
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if (send(cli->cli_sock, &hdr, sizeof hdr, MSG_NOSIGNAL) == -1) { |
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LOGERR; |
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return -1; |
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} |
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/* send BLOB to server */ |
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for (ret = AIT_LEN(var), pos = data; ret > 0; ret -= len, pos += len) |
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if ((len = send(cli->cli_sock, pos, ret, MSG_NOSIGNAL)) == -1) { |
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LOGERR; |
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return -1; |
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} |
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/* wait for reply */ |
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pfd.events = POLLIN | POLLPRI; |
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if ((ret = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 || |
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pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) { |
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if (ret) |
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LOGERR; |
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else |
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rpc_SetErr(ETIMEDOUT, "Timeout reached! Server not respond"); |
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return -1; |
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} |
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if (recv(cli->cli_sock, &hdr, sizeof hdr, 0) == -1) { |
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LOGERR; |
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return 1; |
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} |
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if (hdr.hdr_cmd != error) { |
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AIT_SET_BLOB(var, ntohl(hdr.hdr_var), ntohl(hdr.hdr_len)); |
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if (ntohl(hdr.hdr_len) != AIT_LEN(var)) { |
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rpc_cli_delBLOB(cli, var); |
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AIT_NEW_BLOB(var, ntohl(hdr.hdr_len)); |
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rpc_SetErr(ECANCELED, "Bad return length packet"); |
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return 1; |
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} |
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} |
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return hdr.hdr_cmd == error; |
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} |
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/* |
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* rpc_cli_recvBLOB() - Receive BLOB from server |
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* |
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* @cli = Client instance |
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* @var = BLOB variable |
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* @data = BLOB data, must be e_free after use! |
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* return: -1 error, 0 ok, 1 remote error |
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*/ |
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int |
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rpc_cli_recvBLOB(rpc_cli_t * __restrict cli, ait_val_t * __restrict var, void ** __restrict data) |
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{ |
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int ret, len; |
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uint8_t *pos; |
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struct pollfd pfd; |
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struct tagBLOBHdr hdr; |
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if (!cli || !var || !data) { |
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rpc_SetErr(EINVAL, "Invalid arguments"); |
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return -1; |
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} |
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*data = e_malloc(AIT_LEN(var)); |
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if (!*data) { |
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LOGERR; |
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return -1; |
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} else { |
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memset(&hdr, 0, sizeof hdr); |
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memset(*data, 0, AIT_LEN(var)); |
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} |
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rpc_addPktSession(&hdr.hdr_session, cli->cli_parent); |
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hdr.hdr_cmd = get; |
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hdr.hdr_var = htonl((uint32_t) AIT_GET_BLOB(var)); |
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hdr.hdr_ret = 0; |
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hdr.hdr_len = 0; |
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/* send GET request */ |
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pfd.fd = cli->cli_sock; |
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pfd.events = POLLOUT; |
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if ((ret = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) == -1 || |
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pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) { |
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LOGERR; |
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e_free(*data); |
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*data = NULL; |
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return -1; |
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} |
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if (send(cli->cli_sock, &hdr, sizeof hdr, 0) == -1) { |
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LOGERR; |
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e_free(*data); |
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*data = NULL; |
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return -1; |
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} |
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/* receive BLOB from server */ |
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pfd.events = POLLIN | POLLPRI; |
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for (ret = AIT_LEN(var), pos = *data; ret > 0; ret -= len, pos += len) { |
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if ((len = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 || |
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pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) { |
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LOGERR; |
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e_free(*data); |
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*data = NULL; |
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return -1; |
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} |
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if ((len = recv(cli->cli_sock, pos, ret, 0)) == -1) { |
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LOGERR; |
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e_free(*data); |
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*data = NULL; |
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return -1; |
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} |
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} |
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/* wait for reply */ |
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if ((len = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 || |
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pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) { |
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if (len) |
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LOGERR; |
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else |
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rpc_SetErr(ETIMEDOUT, "Timeout reached! Server not respond"); |
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e_free(*data); |
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*data = NULL; |
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return 1; |
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} |
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if (recv(cli->cli_sock, &hdr, sizeof hdr, 0) == -1) { |
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LOGERR; |
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e_free(*data); |
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*data = NULL; |
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return 1; |
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} |
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if (hdr.hdr_cmd != error) { |
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if (ntohl(hdr.hdr_len) != AIT_LEN(var)) { |
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rpc_SetErr(ECANCELED, "Bad return length packet"); |
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e_free(*data); |
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*data = NULL; |
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return 1; |
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} |
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} |
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return hdr.hdr_cmd == error; |
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} |
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/* |
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* rpc_cli_delBLOB() - Delete BLOB from server |
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* |
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* @cli = Client instance |
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* @var = BLOB variable |
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* return: -1 error, 0 ok, 1 remote error |
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*/ |
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int |
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rpc_cli_delBLOB(rpc_cli_t * __restrict cli, ait_val_t * __restrict var) |
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{ |
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struct tagBLOBHdr hdr; |
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struct pollfd pfd; |
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int ret; |
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if (!cli || !var) { |
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rpc_SetErr(EINVAL, "Invalid arguments"); |
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return -1; |
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} else |
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memset(&hdr, 0, sizeof hdr); |
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rpc_addPktSession(&hdr.hdr_session, cli->cli_parent); |
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hdr.hdr_cmd = unset; |
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hdr.hdr_var = htonl((uint32_t) AIT_GET_BLOB(var)); |
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hdr.hdr_ret = 0; |
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hdr.hdr_len = 0; |
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/* send UNSET request */ |
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pfd.fd = cli->cli_sock; |
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pfd.events = POLLOUT; |
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if ((ret = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) == -1 || |
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pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) { |
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LOGERR; |
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return -1; |
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} |
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if (send(cli->cli_sock, &hdr, sizeof hdr, MSG_NOSIGNAL) == -1) { |
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LOGERR; |
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return -1; |
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} |
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/* wait for reply */ |
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pfd.events = POLLIN | POLLPRI; |
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if ((ret = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 || |
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pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) { |
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if (ret) |
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LOGERR; |
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else |
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rpc_SetErr(ETIMEDOUT, "Timeout reached! Server not respond"); |
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return 1; |
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} |
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if (recv(cli->cli_sock, &hdr, sizeof hdr, 0) == -1) { |
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LOGERR; |
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return 1; |
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} |
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return hdr.hdr_cmd == error; |
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} |
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/* |
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* rpc_cli_getBLOB() - Receive BLOB from server and Delete after that |
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* |
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* @cli = Client instance |
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* @var = BLOB variable |
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* @data = BLOB data, must be e_free after use! |
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* return: -1 error, 0 ok, 1 remote error |
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*/ |
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int |
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rpc_cli_getBLOB(rpc_cli_t * __restrict cli, ait_val_t * __restrict var, void ** __restrict data) |
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{ |
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int ret; |
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ret = rpc_cli_recvBLOB(cli, var, data); |
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ret |= rpc_cli_delBLOB(cli, var) > 0 ? 2 : 0; |
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return ret; |
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} |