Annotation of libaitrpc/src/cli.c, revision 1.9.2.2
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 $
1.9.2.2 ! misho 6: * $Id: cli.c,v 1.9.2.1 2012/05/14 15:22:22 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:
1.7 misho 15: Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
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;
1.6 misho 60: io_sockaddr_t sa;
1.5 misho 61: int n;
1.4 misho 62:
1.9.2.2 ! misho 63: if (!rpccli) {
1.7 misho 64: rpc_SetErr(EINVAL, "Invalid parameters can`t connect to BLOB server");
1.2 misho 65: return NULL;
66: }
67:
68: cli = malloc(sizeof(rpc_cli_t));
69: if (!cli) {
70: LOGERR;
71: return NULL;
72: } else
73: memcpy(cli, rpccli, sizeof(rpc_cli_t));
74:
1.4 misho 75: memcpy(&sa, &rpccli->cli_sa, sizeof sa);
1.6 misho 76: switch (sa.sa.sa_family) {
1.4 misho 77: case AF_INET:
1.6 misho 78: sa.sin.sin_port = htons(Port ? Port : ntohs(sa.sin.sin_port) + 1);
1.4 misho 79: break;
80: case AF_INET6:
1.6 misho 81: sa.sin6.sin6_port = htons(Port ? Port : ntohs(sa.sin6.sin6_port) + 1);
1.4 misho 82: break;
83: case AF_LOCAL:
1.6 misho 84: strlcat(sa.sun.sun_path, ".blob", sizeof sa.sun.sun_path);
1.4 misho 85: break;
1.2 misho 86: }
1.6 misho 87: memcpy(&cli->cli_sa, &sa, sizeof sa);
1.2 misho 88:
1.4 misho 89: /* connect to BLOB server */
1.6 misho 90: cli->cli_sock = socket(cli->cli_sa.sa.sa_family, SOCK_STREAM, 0);
1.2 misho 91: if (cli->cli_sock == -1) {
92: LOGERR;
93: free(cli);
94: return NULL;
95: }
1.5 misho 96: n = cli->cli_netbuf;
97: if (setsockopt(cli->cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
98: LOGERR;
99: close(cli->cli_sock);
100: free(cli);
101: return NULL;
102: }
103: if (setsockopt(cli->cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
104: LOGERR;
105: close(cli->cli_sock);
106: free(cli);
107: return NULL;
108: }
1.6 misho 109: if (connect(cli->cli_sock, &cli->cli_sa.sa, cli->cli_sa.sa.sa_len) == -1) {
1.2 misho 110: LOGERR;
1.5 misho 111: close(cli->cli_sock);
1.2 misho 112: free(cli);
113: return NULL;
114: }
115:
116: return cli;
117: }
118:
119: /*
1.7 misho 120: * rpc_cli_closeBLOBClient() - Close connection to BLOB server and free resources
121: *
1.2 misho 122: * @cli = BLOB Client session
123: * return: none
124: */
125: void
126: rpc_cli_closeBLOBClient(rpc_cli_t * __restrict cli)
127: {
128: if (!cli) {
1.7 misho 129: rpc_SetErr(EINVAL, "Can`t close connection because parameter is null!");
1.2 misho 130: return;
131: }
132:
133: shutdown(cli->cli_sock, SHUT_RDWR);
134: close(cli->cli_sock);
135:
136: free(cli);
137: cli = NULL;
138: }
139:
140: // --------------------------------------------------------------
141:
142: /*
1.7 misho 143: * rpc_cli_openClient() - Connect to RPC Server
144: *
1.1 misho 145: * @ProgID = ProgramID for RPC session request
146: * @ProcID = ProcessID for RPC session request
1.5 misho 147: * @netBuf = Network buffer length, if =0 == BUFSIZ (also meaning max RPC packet)
1.7 misho 148: * @Timeout = RPC timeout in seconds, if =0 set default RPC timeout
1.1 misho 149: * @family = Family socket type, AF_INET or AF_INET6
150: * @csHost = Host name or IP address for bind server
151: * @Port = Port for bind server, if Port == 0 default port is selected
152: * return: NULL == error or !=NULL connection to RPC server established
153: */
154: rpc_cli_t *
1.7 misho 155: rpc_cli_openClient(u_int ProgID, u_int ProcID, int netBuf, u_char Timeout,
156: u_short family, const char *csHost, u_short Port)
1.1 misho 157: {
158: rpc_cli_t *cli = NULL;
1.6 misho 159: io_sockaddr_t sa;
1.5 misho 160: int n;
1.1 misho 161:
1.9.2.1 misho 162: if (!io_gethostbyname(csHost, Port, &sa))
1.1 misho 163: return NULL;
164: if (!Port)
165: Port = RPC_DEFPORT;
1.5 misho 166: if (!netBuf)
167: netBuf = BUFSIZ;
1.7 misho 168: if (!Timeout)
169: Timeout = DEF_RPC_TIMEOUT;
1.1 misho 170:
171: cli = malloc(sizeof(rpc_cli_t));
172: if (!cli) {
173: LOGERR;
174: return NULL;
175: } else
176: memset(cli, 0, sizeof(rpc_cli_t));
1.5 misho 177:
178: cli->cli_netbuf = netBuf;
1.1 misho 179: cli->cli_parent = malloc(sizeof(rpc_sess_t));
180: if (!cli->cli_parent) {
181: LOGERR;
182: free(cli);
183: return NULL;
184: } else {
185: ((rpc_sess_t*) cli->cli_parent)->sess_version = RPC_VERSION;
1.7 misho 186: ((rpc_sess_t*) cli->cli_parent)->sess_timeout = Timeout;
1.1 misho 187: ((rpc_sess_t*) cli->cli_parent)->sess_program = ProgID;
188: ((rpc_sess_t*) cli->cli_parent)->sess_process = ProcID;
189: }
190:
1.6 misho 191: memcpy(&cli->cli_sa, &sa, sizeof cli->cli_sa);
1.4 misho 192:
193: /* connect to RPC server */
1.9.2.1 misho 194: cli->cli_sock = socket(cli->cli_sa.sa.sa_family, SOCK_STREAM, 0);
1.1 misho 195: if (cli->cli_sock == -1) {
196: LOGERR;
197: free(cli->cli_parent);
198: free(cli);
199: return NULL;
200: }
1.5 misho 201: n = cli->cli_netbuf;
202: if (setsockopt(cli->cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
203: LOGERR;
204: close(cli->cli_sock);
205: free(cli->cli_parent);
206: free(cli);
207: return NULL;
208: }
209: if (setsockopt(cli->cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
210: LOGERR;
211: close(cli->cli_sock);
212: free(cli->cli_parent);
213: free(cli);
214: return NULL;
215: }
1.6 misho 216: if (connect(cli->cli_sock, &cli->cli_sa.sa, cli->cli_sa.sa.sa_len) == -1) {
1.1 misho 217: LOGERR;
1.5 misho 218: close(cli->cli_sock);
1.1 misho 219: free(cli->cli_parent);
220: free(cli);
221: return NULL;
222: }
223:
224: return cli;
225: }
226:
227: /*
1.7 misho 228: * rpc_cli_closeClient() - Close connection to RPC server and free resources
229: *
1.1 misho 230: * @cli = RPC Client session
231: * return: none
232: */
233: void
234: rpc_cli_closeClient(rpc_cli_t * __restrict cli)
235: {
236: if (!cli) {
1.7 misho 237: rpc_SetErr(EINVAL, "Can`t close connection because parameter is null!");
1.1 misho 238: return;
239: }
240:
241: shutdown(cli->cli_sock, SHUT_RDWR);
242: close(cli->cli_sock);
243:
244: if (cli->cli_parent)
245: free(cli->cli_parent);
246: free(cli);
247: cli = NULL;
248: }
249:
250:
251: /*
1.7 misho 252: * rpc_cli_execCall() - Execute RPC call
253: *
1.1 misho 254: * @cli = RPC Client session
1.8 misho 255: * @noreply = We not want RPC reply
1.1 misho 256: * @csModule = Module name, if NULL self binary
257: * @csFunc = Function name for execute
1.4 misho 258: * @in_vars = IN RPC call array of rpc values
1.5 misho 259: * @out_vars = OUT returned array of rpc values, must be free after use with rpc_cli_freeVals()
1.1 misho 260: * return: -1 error or != -1 ok result
261: */
262: int
1.8 misho 263: rpc_cli_execCall(rpc_cli_t *cli, int noreply, const char *csModule, const char *csFunc,
1.5 misho 264: array_t * __restrict in_vars, array_t ** __restrict out_vars)
1.1 misho 265: {
1.7 misho 266: u_char *buf;
267: rpc_func_t func;
1.5 misho 268: struct tagRPCCall *rpc;
1.7 misho 269: int ret = 0, wlen = sizeof(struct tagRPCCall);
1.8 misho 270: uint16_t tag, crc;
1.6 misho 271: uint32_t hash;
1.9 misho 272: struct pollfd pfd;
1.1 misho 273:
1.5 misho 274: if (!cli || !csFunc) {
1.7 misho 275: rpc_SetErr(EINVAL, "Can`t execute call because parameter is null or invalid!");
1.1 misho 276: return -1;
277: }
1.5 misho 278: if (out_vars)
279: *out_vars = NULL;
280:
281: buf = malloc(cli->cli_netbuf);
282: if (!buf) {
283: LOGERR;
284: return -1;
285: } else
286: memset(buf, 0, cli->cli_netbuf);
287:
1.7 misho 288: /* calculate hashes */
289: if (rpc_calcHashes(&func, csModule, csFunc) == -1)
290: return -1;
291: else {
292: tag = htons(func.func_tag);
293: hash = htonl(func.func_hash);
294: AIT_FREE_VAL(&func.func_name);
295: AIT_FREE_VAL(&func.func_file);
296: }
1.1 misho 297:
1.4 misho 298: /* prepare RPC call */
1.5 misho 299: rpc = (struct tagRPCCall*) buf;
1.6 misho 300: rpc_addPktSession(&rpc->call_session, cli->cli_parent);
301: rpc->call_argc = htons(io_arraySize(in_vars));
1.7 misho 302: rpc->call_tag = tag;
303: rpc->call_hash = hash;
1.5 misho 304:
1.8 misho 305: /* set reply */
306: rpc->call_req.flags = noreply ? RPC_NOREPLY : RPC_REPLY;
307:
1.6 misho 308: if (io_arraySize(in_vars)) {
1.5 misho 309: /* marshaling variables */
1.7 misho 310: ret = io_vars2buffer(buf + wlen, cli->cli_netbuf - wlen, in_vars);
1.5 misho 311: if (ret == -1) {
1.7 misho 312: rpc_SetErr(EBADRPC, "Failed to prepare RPC packet values");
1.5 misho 313: free(buf);
1.7 misho 314: return -1;
1.3 misho 315: } else
1.7 misho 316: wlen += ret;
1.1 misho 317: }
1.4 misho 318:
1.8 misho 319: rpc->call_len = htons(wlen);
320:
1.7 misho 321: /* calculate CRC */
322: rpc->call_crc ^= rpc->call_crc;
1.8 misho 323: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
1.7 misho 324:
325: if ((ret = send(cli->cli_sock, buf, wlen, 0)) == -1) {
1.1 misho 326: LOGERR;
1.5 misho 327: free(buf);
1.1 misho 328: return -1;
1.7 misho 329: } else if (ret != wlen) {
330: rpc_SetErr(EPROCUNAVAIL, "RPC request, should be send %d bytes, "
331: "really sended %d bytes", wlen, ret);
1.5 misho 332: free(buf);
1.7 misho 333: return -1;
1.1 misho 334: }
335:
1.8 misho 336: if (noreply) {
337: /* we not want reply */
338: free(buf);
339: return 0;
340: }
341:
1.5 misho 342: /* reply from RPC server */
1.9 misho 343: pfd.fd = cli->cli_sock;
344: pfd.events = POLLIN | POLLPRI;
345: if ((ret = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) == -1 ||
346: pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
1.4 misho 347: if (ret)
1.1 misho 348: LOGERR;
1.4 misho 349: else
1.8 misho 350: rpc_SetErr(ETIMEDOUT, "Timeout, no return from RPC server?");
1.4 misho 351:
1.5 misho 352: free(buf);
1.1 misho 353: return -1;
354: }
1.5 misho 355: memset(buf, 0, cli->cli_netbuf);
356: if ((ret = recv(cli->cli_sock, buf, cli->cli_netbuf, 0)) == -1) {
1.1 misho 357: LOGERR;
1.5 misho 358: free(buf);
1.8 misho 359: return -1;
1.1 misho 360: }
1.5 misho 361: if (!ret) { /* receive EOF! */
362: free(buf);
1.1 misho 363: return 0;
1.5 misho 364: }
1.7 misho 365: if (ret < sizeof(struct tagRPCCall)) {
1.8 misho 366: rpc_SetErr(ERPCMISMATCH, "Too short RPC packet ...");
1.5 misho 367: free(buf);
1.8 misho 368: return -1;
1.7 misho 369: }
1.8 misho 370:
371: /* calculate CRC */
372: crc = ntohs(rpc->call_crc);
373: rpc->call_crc ^= rpc->call_crc;
374: if (crc != crcFletcher16((u_short*) buf, ret / 2)) {
375: rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet");
376: free(buf);
377: return -1;
378: }
379:
1.3 misho 380: /* check RPC packet session info */
1.7 misho 381: if (rpc_chkPktSession(&rpc->call_session, cli->cli_parent)) {
1.8 misho 382: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session ...");
1.5 misho 383: free(buf);
1.8 misho 384: return -1;
1.2 misho 385: } else
1.7 misho 386: wlen = sizeof(struct tagRPCCall);
387: if (rpc->call_tag != tag || rpc->call_hash != hash) {
1.8 misho 388: rpc_SetErr(ERPCMISMATCH, "Get wrong RPC reply ...");
1.6 misho 389: free(buf);
1.8 misho 390: return -1;
1.6 misho 391: }
1.7 misho 392: if (ntohl(rpc->call_rep.ret) < 0 && ntohl(rpc->call_rep.eno)) {
1.8 misho 393: rpc_SetErr(ntohl(rpc->call_rep.eno), "Server side: retcode=%d #%d %s",
1.7 misho 394: ntohl(rpc->call_rep.ret), ntohl(rpc->call_rep.eno),
395: strerror(ntohl(rpc->call_rep.eno)));
1.5 misho 396: free(buf);
1.8 misho 397: return -1;
1.1 misho 398: }
1.7 misho 399: if (ntohs(rpc->call_argc) * sizeof(ait_val_t) > cli->cli_netbuf - wlen) {
1.8 misho 400: rpc_SetErr(EMSGSIZE, "Reply RPC packet is too long ...");
1.5 misho 401: free(buf);
1.8 misho 402: return -1;
1.5 misho 403: }
404:
405: /* RPC is OK! Go de-marshaling variables ... */
1.7 misho 406: if (ntohs(rpc->call_argc)) {
407: *out_vars = io_buffer2vars(buf + wlen, cli->cli_netbuf - wlen,
408: ntohs(rpc->call_argc), 0);
1.4 misho 409: if (!*out_vars) {
1.5 misho 410: free(buf);
1.1 misho 411: return -1;
1.5 misho 412: }
1.1 misho 413: }
414:
1.7 misho 415: ret = ntohl(rpc->call_rep.ret);
1.5 misho 416: free(buf);
417: return ret;
1.1 misho 418: }
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/cvsweb/back.gif){kind=icon}
Return to cli.c CVS log ![[TXT]](/icons/cvsweb/text.gif){kind=icon}
![[DIR]](/icons/cvsweb/dir.gif){kind=icon}
Up to [ELWIX - Embedded LightWeight unIX -] / libaitrpc / src