Annotation of libaitrpc/src/cli.c, revision 1.16
1.1 misho 1: /*************************************************************************
2: * (C) 2010 AITNET ltd - Sofia/Bulgaria - <misho@aitbg.com>
3: * by Michael Pounov <misho@openbsd-bg.org>
4: *
5: * $Author: misho $
1.16 ! misho 6: * $Id: cli.c,v 1.15.2.1 2013/05/26 20:24:52 misho Exp $
1.1 misho 7: *
1.2 misho 8: **************************************************************************
9: The ELWIX and AITNET software is distributed under the following
10: terms:
11:
12: All of the documentation and software included in the ELWIX and AITNET
13: Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>
14:
1.14 misho 15: Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
1.2 misho 16: by Michael Pounov <misho@elwix.org>. All rights reserved.
17:
18: Redistribution and use in source and binary forms, with or without
19: modification, are permitted provided that the following conditions
20: are met:
21: 1. Redistributions of source code must retain the above copyright
22: notice, this list of conditions and the following disclaimer.
23: 2. Redistributions in binary form must reproduce the above copyright
24: notice, this list of conditions and the following disclaimer in the
25: documentation and/or other materials provided with the distribution.
26: 3. All advertising materials mentioning features or use of this software
27: must display the following acknowledgement:
28: This product includes software developed by Michael Pounov <misho@elwix.org>
29: ELWIX - Embedded LightWeight unIX and its contributors.
30: 4. Neither the name of AITNET nor the names of its contributors
31: may be used to endorse or promote products derived from this software
32: without specific prior written permission.
33:
34: THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND
35: ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
36: IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
37: ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
38: FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
39: DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
40: OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
41: HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
42: LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
43: OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
44: SUCH DAMAGE.
45: */
1.1 misho 46: #include "global.h"
47:
48:
49: /*
1.7 misho 50: * rpc_cli_openBLOBClient() - Connect to BLOB Server
51: *
1.2 misho 52: * @rpccli = RPC Client session
53: * @Port = Port for bind server, if Port == 0 default port is selected
54: * return: NULL == error or !=NULL connection to BLOB server established
55: */
56: rpc_cli_t *
57: rpc_cli_openBLOBClient(rpc_cli_t * __restrict rpccli, u_short Port)
58: {
59: rpc_cli_t *cli = NULL;
1.13 misho 60: int n;
1.4 misho 61:
1.10 misho 62: if (!rpccli) {
1.7 misho 63: rpc_SetErr(EINVAL, "Invalid parameters can`t connect to BLOB server");
1.2 misho 64: return NULL;
65: }
66:
1.14 misho 67: cli = e_malloc(sizeof(rpc_cli_t));
1.2 misho 68: if (!cli) {
69: LOGERR;
70: return NULL;
71: } else
72: memcpy(cli, rpccli, sizeof(rpc_cli_t));
73:
1.14 misho 74: memcpy(&cli->cli_sa, &rpccli->cli_sa, sizeof(sockaddr_t));
1.10 misho 75: switch (cli->cli_sa.sa.sa_family) {
1.4 misho 76: case AF_INET:
1.10 misho 77: cli->cli_sa.sin.sin_port =
78: htons(Port ? Port : ntohs(cli->cli_sa.sin.sin_port) + 1);
1.4 misho 79: break;
80: case AF_INET6:
1.10 misho 81: cli->cli_sa.sin6.sin6_port =
82: htons(Port ? Port : ntohs(cli->cli_sa.sin6.sin6_port) + 1);
1.4 misho 83: break;
84: case AF_LOCAL:
1.10 misho 85: strlcat(cli->cli_sa.sun.sun_path, ".blob", sizeof cli->cli_sa.sun.sun_path);
1.4 misho 86: break;
1.10 misho 87: default:
88: rpc_SetErr(EINVAL, "Invalid socket type %d", cli->cli_sa.sa.sa_family);
89: return NULL;
1.2 misho 90: }
1.10 misho 91:
92: AIT_COPY_VAL(&cli->cli_buf, &rpccli->cli_buf);
1.13 misho 93: n = AIT_LEN(&cli->cli_buf);
1.2 misho 94:
1.4 misho 95: /* connect to BLOB server */
1.6 misho 96: cli->cli_sock = socket(cli->cli_sa.sa.sa_family, SOCK_STREAM, 0);
1.2 misho 97: if (cli->cli_sock == -1) {
98: LOGERR;
1.14 misho 99: e_free(cli);
1.2 misho 100: return NULL;
101: }
1.13 misho 102: if (setsockopt(cli->cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
103: LOGERR;
104: close(cli->cli_sock);
1.14 misho 105: e_free(cli);
1.13 misho 106: return NULL;
107: }
108: if (setsockopt(cli->cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
109: LOGERR;
110: close(cli->cli_sock);
1.14 misho 111: e_free(cli);
1.13 misho 112: return NULL;
113: }
1.6 misho 114: if (connect(cli->cli_sock, &cli->cli_sa.sa, cli->cli_sa.sa.sa_len) == -1) {
1.2 misho 115: LOGERR;
1.5 misho 116: close(cli->cli_sock);
1.14 misho 117: e_free(cli);
1.2 misho 118: return NULL;
1.10 misho 119: } else
120: fcntl(cli->cli_sock, F_SETFL, fcntl(cli->cli_sock, F_GETFL) | O_NONBLOCK);
1.2 misho 121:
122: return cli;
123: }
124:
125: /*
1.7 misho 126: * rpc_cli_closeBLOBClient() - Close connection to BLOB server and free resources
127: *
1.2 misho 128: * @cli = BLOB Client session
129: * return: none
130: */
131: void
1.10 misho 132: rpc_cli_closeBLOBClient(rpc_cli_t ** __restrict cli)
1.2 misho 133: {
1.10 misho 134: if (!cli || !*cli)
1.2 misho 135: return;
136:
1.10 misho 137: shutdown((*cli)->cli_sock, SHUT_RDWR);
138: close((*cli)->cli_sock);
139:
140: AIT_FREE_VAL(&(*cli)->cli_buf);
1.2 misho 141:
1.14 misho 142: e_free(*cli);
1.10 misho 143: *cli = NULL;
1.2 misho 144: }
145:
1.10 misho 146: /* -------------------------------------------------------------- */
1.2 misho 147:
148: /*
1.7 misho 149: * rpc_cli_openClient() - Connect to RPC Server
150: *
1.15 misho 151: * @InstID = InstID for RPC session request
1.10 misho 152: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
1.1 misho 153: * @csHost = Host name or IP address for bind server
154: * @Port = Port for bind server, if Port == 0 default port is selected
1.13 misho 155: * @proto = Protocol, if == 0 choose SOCK_STREAM
1.1 misho 156: * return: NULL == error or !=NULL connection to RPC server established
157: */
158: rpc_cli_t *
1.15 misho 159: rpc_cli_openClient(u_char InstID, int netBuf, const char *csHost, u_short Port, int proto)
1.1 misho 160: {
161: rpc_cli_t *cli = NULL;
1.14 misho 162: sockaddr_t sa = E_SOCKADDR_INIT;
1.1 misho 163:
1.14 misho 164: if (!e_gethostbyname(csHost, Port, &sa))
1.1 misho 165: return NULL;
166: if (!Port)
167: Port = RPC_DEFPORT;
1.13 misho 168: if (!proto)
169: proto = SOCK_STREAM;
1.10 misho 170: if (netBuf < RPC_MIN_BUFSIZ)
1.5 misho 171: netBuf = BUFSIZ;
1.10 misho 172: else
1.14 misho 173: netBuf = E_ALIGN(netBuf, 2); /* align netBuf length */
1.10 misho 174:
175: #ifdef HAVE_SRANDOMDEV
176: srandomdev();
177: #else
178: time_t tim;
179:
180: srandom((time(&tim) ^ getpid()));
181: #endif
1.1 misho 182:
1.14 misho 183: cli = e_malloc(sizeof(rpc_cli_t));
1.1 misho 184: if (!cli) {
185: LOGERR;
186: return NULL;
187: } else
188: memset(cli, 0, sizeof(rpc_cli_t));
1.5 misho 189:
1.10 misho 190: /* build session */
1.14 misho 191: cli->cli_parent = e_malloc(sizeof(rpc_sess_t));
1.1 misho 192: if (!cli->cli_parent) {
193: LOGERR;
1.14 misho 194: e_free(cli);
1.1 misho 195: return NULL;
196: } else {
197: ((rpc_sess_t*) cli->cli_parent)->sess_version = RPC_VERSION;
1.15 misho 198: ((rpc_sess_t*) cli->cli_parent)->sess_instance = InstID;
1.1 misho 199: }
200:
1.13 misho 201: cli->cli_id = proto;
1.6 misho 202: memcpy(&cli->cli_sa, &sa, sizeof cli->cli_sa);
1.14 misho 203: AIT_SET_BUFSIZ(&cli->cli_buf, 0, netBuf);
1.4 misho 204:
205: /* connect to RPC server */
1.13 misho 206: cli->cli_sock = socket(cli->cli_sa.sa.sa_family, cli->cli_id, 0);
1.1 misho 207: if (cli->cli_sock == -1) {
208: LOGERR;
1.13 misho 209: goto err;
210: }
211: if (setsockopt(cli->cli_sock, SOL_SOCKET, SO_SNDBUF,
212: &netBuf, sizeof netBuf) == -1) {
213: LOGERR;
214: goto err;
1.5 misho 215: }
1.13 misho 216: if (setsockopt(cli->cli_sock, SOL_SOCKET, SO_RCVBUF,
217: &netBuf, sizeof netBuf) == -1) {
1.1 misho 218: LOGERR;
1.13 misho 219: goto err;
220: }
221: if (cli->cli_id == SOCK_STREAM)
222: if (connect(cli->cli_sock, &cli->cli_sa.sa, cli->cli_sa.sa.sa_len) == -1) {
223: LOGERR;
224: goto err;
225: }
1.1 misho 226:
1.13 misho 227: fcntl(cli->cli_sock, F_SETFL, fcntl(cli->cli_sock, F_GETFL) | O_NONBLOCK);
1.1 misho 228: return cli;
1.13 misho 229: err:
230: AIT_FREE_VAL(&cli->cli_buf);
231: if (cli->cli_sock > 2)
232: close(cli->cli_sock);
1.14 misho 233: e_free(cli->cli_parent);
234: e_free(cli);
1.13 misho 235: return NULL;
1.1 misho 236: }
237:
238: /*
1.7 misho 239: * rpc_cli_closeClient() - Close connection to RPC server and free resources
240: *
1.1 misho 241: * @cli = RPC Client session
242: * return: none
243: */
244: void
1.10 misho 245: rpc_cli_closeClient(rpc_cli_t ** __restrict cli)
1.1 misho 246: {
1.10 misho 247: if (!cli || !*cli)
1.1 misho 248: return;
249:
1.13 misho 250: if ((*cli)->cli_id == SOCK_STREAM)
251: shutdown((*cli)->cli_sock, SHUT_RDWR);
1.10 misho 252: close((*cli)->cli_sock);
253:
254: AIT_FREE_VAL(&(*cli)->cli_buf);
255:
256: if ((*cli)->cli_parent)
1.14 misho 257: e_free((*cli)->cli_parent);
1.1 misho 258:
1.14 misho 259: e_free(*cli);
1.10 misho 260: *cli = NULL;
1.1 misho 261: }
262:
263: /*
1.14 misho 264: * rpc_pkt_Send() - Send RPC packet
1.7 misho 265: *
1.14 misho 266: * @sock = Socket
267: * @type = Type of socket
268: * @sa = Server address
269: * @pkt = RPC packet
270: * @len = Length of packet
271: * return: -1 error or !=-1 sended bytes
1.1 misho 272: */
273: int
1.14 misho 274: rpc_pkt_Send(int sock, int type, sockaddr_t * __restrict sa, ait_val_t * __restrict pkt, int len)
1.1 misho 275: {
1.14 misho 276: struct pollfd pfd;
277: int ret;
1.10 misho 278: u_char *buf;
1.1 misho 279:
1.14 misho 280: if (!pkt) {
281: rpc_SetErr(EINVAL, "Invalid argument(s)!");
1.1 misho 282: return -1;
1.10 misho 283: } else
1.14 misho 284: buf = AIT_GET_BUF(pkt);
1.7 misho 285:
1.14 misho 286: pfd.fd = sock;
1.10 misho 287: pfd.events = POLLOUT;
288: if ((ret = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 ||
1.9 misho 289: pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
1.4 misho 290: if (ret)
1.1 misho 291: LOGERR;
1.4 misho 292: else
1.10 misho 293: rpc_SetErr(ETIMEDOUT, "Timeout, can't send to RPC server");
1.1 misho 294: return -1;
295: }
1.10 misho 296: do {
1.14 misho 297: if (type == SOCK_STREAM)
298: ret = send(sock, buf, len, MSG_NOSIGNAL);
299: else if (sa)
300: ret = sendto(sock, buf, len, MSG_NOSIGNAL, &sa->sa, sa->sa.sa_len);
301: else {
302: rpc_SetErr(EINVAL, "Invalid argument(s)!");
303: return -1;
304: }
1.13 misho 305: if (ret == -1) {
1.10 misho 306: if (errno == EAGAIN)
307: continue;
308: LOGERR;
309: return -1;
1.14 misho 310: } else if (ret != len) {
1.10 misho 311: rpc_SetErr(EPROCUNAVAIL, "RPC request, should be send %d bytes, "
1.14 misho 312: "really sended %d bytes", len, ret);
1.10 misho 313: return -1;
314: }
315: } while (0);
316:
1.14 misho 317: return ret;
318: }
319:
320: /*
321: * rpc_pkt_Receive() - Receive RPC packet
322: *
323: * @sock = Socket
324: * @type = Type of socket
325: * @sa = Server address
326: * @pkt = RPC packet
327: * return: -1 error or !=-1 sended bytes
328: */
329: int
330: rpc_pkt_Receive(int sock, int type, sockaddr_t * __restrict sa, ait_val_t * __restrict pkt)
331: {
332: struct pollfd pfd;
333: int ret, len = 0;
334: u_char *buf;
335: sockaddr_t sa2;
336: socklen_t salen;
337:
338: if (!pkt) {
339: rpc_SetErr(EINVAL, "Invalid argument(s)!");
340: return -1;
341: } else
342: buf = AIT_GET_BUF(pkt);
1.10 misho 343:
344: /* reply from RPC server */
1.14 misho 345: pfd.fd = sock;
1.10 misho 346: pfd.events = POLLIN | POLLPRI;
347: do {
348: if ((ret = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 ||
349: pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
1.13 misho 350: if (ret) {
1.10 misho 351: LOGERR;
1.13 misho 352: } else {
1.14 misho 353: if (len++ < 7)
1.10 misho 354: continue;
355: else
1.14 misho 356: rpc_SetErr(ETIMEDOUT,
357: "Timeout, no answer from RPC server");
1.10 misho 358: }
1.13 misho 359:
1.10 misho 360: return -1;
361: }
1.13 misho 362:
1.14 misho 363: memset(buf, 0, AIT_LEN(pkt));
364: if (type == SOCK_STREAM)
365: ret = recv(sock, buf, AIT_LEN(pkt), 0);
366: else {
367: memset(&sa2, 0, sizeof sa2);
368: salen = sa2.ss.ss_len = sizeof(sockaddr_t);
369: ret = recvfrom(sock, buf, AIT_LEN(pkt), 0, &sa2.sa, &salen);
370: }
1.13 misho 371: if (ret < 1) {
1.10 misho 372: if (ret) {
373: if (errno == EAGAIN)
374: continue;
375: else
376: LOGERR;
377: }
378: return -1;
379: }
1.13 misho 380:
1.14 misho 381: /* check for response from known address */
382: if (type == SOCK_DGRAM)
383: if (e_addrcmp(sa, &sa2, 42)) {
384: rpc_SetErr(ERPCMISMATCH,
385: "Received RPC response from unknown address");
1.13 misho 386: continue;
387: }
1.10 misho 388: } while (0);
1.7 misho 389: if (ret < sizeof(struct tagRPCCall)) {
1.10 misho 390: rpc_SetErr(ERPCMISMATCH, "Short RPC packet %d bytes", ret);
1.8 misho 391: return -1;
1.7 misho 392: }
1.8 misho 393:
1.14 misho 394: return ret;
395: }
396:
397: /*
398: * rpc_pkt_Request() - Build RPC Request packet
399: *
400: * @pkt = Packet buffer
401: * @sess = RPC session info
402: * @tag = Function tag for execution
403: * @vars = Function argument array of values, may be NULL
404: * @noreply = We not want RPC reply
1.15 misho 405: * @nocrc = Without CRC calculation
1.14 misho 406: * return: -1 error or != -1 prepared bytes into packet
407: */
408: int
409: rpc_pkt_Request(ait_val_t * __restrict pkt, rpc_sess_t * __restrict sess, u_short tag,
1.15 misho 410: array_t * __restrict vars, int noreply, int nocrc)
1.14 misho 411: {
412: struct tagRPCCall *rpc;
413: int ret = 0, len = sizeof(struct tagRPCCall);
414: u_char *buf;
415:
416: if (!pkt || !sess) {
417: rpc_SetErr(EINVAL, "Invalid argument(s)!");
418: return -1;
419: } else
420: buf = AIT_GET_BUF(pkt);
421:
422: /* prepare RPC call */
423: rpc = (struct tagRPCCall*) buf;
424: rpc_addPktSession(&rpc->call_session, sess);
425: rpc->call_tag = htons(tag);
426: rpc->call_seq = htons(random() % USHRT_MAX);
427: if (!vars)
428: rpc->call_argc = 0;
429: else
430: rpc->call_argc = htons(array_Size(vars));
431:
432: /* set reply */
433: rpc->call_req.flags = noreply ? RPC_NOREPLY : RPC_REPLY;
434:
435: if (array_Size(vars)) {
436: /* marshaling variables */
437: ret = ait_vars2buffer(buf + len, AIT_LEN(pkt) - len, vars);
438: if (ret == -1) {
439: rpc_SetErr(EBADRPC, "Failed to prepare RPC packet values");
440: return -1;
441: } else
442: len += ret;
443: }
444:
445: /* total packet length */
446: rpc->call_len = htons(len);
447:
1.15 misho 448: if (!nocrc) {
449: /* calculate CRC */
450: rpc->call_crc ^= rpc->call_crc;
451: rpc->call_crc = htons(crcFletcher16((u_short*) buf, len / 2));
452: }
1.14 misho 453:
454: return len;
455: }
456:
457: /*
458: * rpc_pkt_Replay() - Decode RPC Replay packet
459: *
460: * @pkt = Packet buffer
461: * @sess = RPC session info
462: * @tag = Function tag
463: * @vars = Function argument array of values, may be NULL
1.15 misho 464: * @nocrc = Without CRC calculation
1.14 misho 465: * return: -1 error or != -1 return value from function
466: */
467: int
468: rpc_pkt_Replay(ait_val_t * __restrict pkt, rpc_sess_t * __restrict sess, u_short tag,
1.15 misho 469: array_t ** __restrict vars, int nocrc)
1.14 misho 470: {
471: struct tagRPCCall *rpc;
472: int len;
473: u_char *buf;
474: uint16_t crc;
475:
476: if (!pkt || !sess) {
477: rpc_SetErr(EINVAL, "Invalid argument(s)!");
478: return -1;
479: } else
480: buf = AIT_GET_BUF(pkt);
481:
482: rpc = (struct tagRPCCall*) buf;
1.15 misho 483: if (!nocrc) {
484: /* calculate CRC */
485: crc = ntohs(rpc->call_crc);
486: rpc->call_crc ^= rpc->call_crc;
487: if (crc != crcFletcher16((u_short*) buf, ntohs(rpc->call_len) / 2)) {
488: rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet");
489: return -1;
490: }
1.8 misho 491: }
492:
1.3 misho 493: /* check RPC packet session info */
1.14 misho 494: if (rpc_chkPktSession(&rpc->call_session, sess)) {
1.10 misho 495: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
1.8 misho 496: return -1;
1.14 misho 497: }
1.10 misho 498: if (ntohs(rpc->call_tag) != tag) {
499: rpc_SetErr(ERPCMISMATCH, "Get wrong RPC reply");
1.8 misho 500: return -1;
1.6 misho 501: }
1.10 misho 502: if (ntohl(rpc->call_rep.eno) && ntohl(rpc->call_rep.ret) == -1) {
1.8 misho 503: rpc_SetErr(ntohl(rpc->call_rep.eno), "Server side: retcode=%d #%d %s",
1.7 misho 504: ntohl(rpc->call_rep.ret), ntohl(rpc->call_rep.eno),
505: strerror(ntohl(rpc->call_rep.eno)));
1.8 misho 506: return -1;
1.1 misho 507: }
1.14 misho 508: len = ntohs(rpc->call_argc) * sizeof(ait_val_t);
509: if (len > AIT_LEN(pkt) - sizeof(struct tagRPCCall)) {
510: rpc_SetErr(EMSGSIZE, "Reply RPC packet not enough buffer space ...");
511: return -1;
512: }
513: if (len > ntohs(rpc->call_len) - sizeof(struct tagRPCCall)) {
514: rpc_SetErr(EMSGSIZE, "Reply RPC packet is too short ...");
1.8 misho 515: return -1;
1.5 misho 516: }
517:
518: /* RPC is OK! Go de-marshaling variables ... */
1.14 misho 519: if (vars && ntohs(rpc->call_argc)) {
1.12 misho 520: #ifdef CLI_RES_ZCOPY
1.14 misho 521: *vars = ait_buffer2vars(buf + sizeof(struct tagRPCCall), len,
1.12 misho 522: ntohs(rpc->call_argc), 42);
523: #else
1.14 misho 524: *vars = ait_buffer2vars(buf + sizeof(struct tagRPCCall), len,
1.7 misho 525: ntohs(rpc->call_argc), 0);
1.12 misho 526: #endif
1.14 misho 527: if (!*vars) {
528: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1.1 misho 529: return -1;
1.5 misho 530: }
1.1 misho 531: }
532:
1.14 misho 533: return ntohl(rpc->call_rep.ret);
534: }
535:
536: /*
537: * rpc_cli_execCall() - Execute RPC call
538: *
539: * @cli = RPC Client session
540: * @noreply = We not want RPC reply
541: * @tag = Function tag for execution
542: * @in_vars = IN function argument array of values, may be NULL
543: * @out_vars = OUT returned array of rpc values, if !=NULL must be free after use with ait_freeVars()
544: * return: -1 error or != -1 ok result
545: */
546: int
547: rpc_cli_execCall(rpc_cli_t *cli, int noreply, u_short tag,
548: array_t * __restrict in_vars, array_t ** __restrict out_vars)
549: {
1.15 misho 550: int type = 0, wlen;
1.14 misho 551: u_char *buf;
552:
553: if (!cli) {
554: rpc_SetErr(EINVAL, "Can`t execute call because parameter is null or invalid!");
555: return -1;
1.15 misho 556: } else {
557: if (cli->cli_id == SOCK_STREAM)
558: type = cli->cli_id;
1.14 misho 559: buf = AIT_GET_BUF(&cli->cli_buf);
1.15 misho 560: }
1.14 misho 561: if (out_vars)
562: *out_vars = NULL;
563:
1.15 misho 564: if ((wlen = rpc_pkt_Request(&cli->cli_buf, cli->cli_parent, tag, in_vars, noreply, type)) == -1)
1.14 misho 565: return -1;
566:
567: if (rpc_pkt_Send(cli->cli_sock, cli->cli_id, &cli->cli_sa, &cli->cli_buf, wlen) == -1)
568: return -1;
569:
570: if (noreply) /* we not want reply */
571: return 0;
572:
573: if (rpc_pkt_Receive(cli->cli_sock, cli->cli_id, &cli->cli_sa, &cli->cli_buf) == -1)
574: return -1;
575:
1.15 misho 576: if ((wlen = rpc_pkt_Replay(&cli->cli_buf, cli->cli_parent, tag, out_vars, type)) == -1)
1.14 misho 577: return -1;
578:
1.15 misho 579: return 0;
1.10 misho 580: }
581:
582: /*
1.12 misho 583: * rpc_cli_freeCall() - Free resouce allocated by RPC call
584: *
585: * @out_vars = Returned array with variables from RPC call
586: * return: none
587: */
1.16 ! misho 588: void
1.12 misho 589: rpc_cli_freeCall(array_t ** __restrict out_vars)
590: {
591: #ifdef CLI_RES_ZCOPY
1.14 misho 592: array_Destroy(out_vars);
1.12 misho 593: #else
1.14 misho 594: ait_freeVars(out_vars);
1.12 misho 595: #endif
596: }
597:
598: /*
1.10 misho 599: * rpc_cli_ping() - Ping RPC server
600: *
601: * @cli = connected client
602: * return: -1 error or !=-1 ping seq id
603: */
1.16 ! misho 604: int
1.10 misho 605: rpc_cli_ping(rpc_cli_t *cli)
606: {
607: int ret = 0;
608: array_t *arr = NULL;
609:
610: if (!cli)
611: return -1;
612:
613: if (rpc_cli_execCall(cli, RPC_REPLY, CALL_SRVPING, NULL, &arr))
614: return -1;
615: else
1.14 misho 616: ret = AIT_GET_U16(array(arr, 0, ait_val_t*));
1.12 misho 617: rpc_cli_freeCall(&arr);
1.10 misho 618:
1.5 misho 619: return ret;
1.1 misho 620: }
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