1: /*************************************************************************
2: * (C) 2010 AITNET ltd - Sofia/Bulgaria - <misho@aitbg.com>
3: * by Michael Pounov <misho@openbsd-bg.org>
4: *
5: * $Author: misho $
6: * $Id: srv.c,v 1.21.2.5 2013/11/15 09:05:19 misho Exp $
7: *
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:
15: Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
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: */
46: #include "global.h"
47:
48:
49: /* SOCK_STREAM */
50: static void *acceptClients(sched_task_t *);
51: static void *closeClient(sched_task_t *);
52: static void *rxPacket(sched_task_t *);
53: static void *txPacket(sched_task_t *);
54:
55: /* SOCK_DGRAM */
56: static void *freeClient(sched_task_t *);
57: static void *rxUDPPacket(sched_task_t *);
58: static void *txUDPPacket(sched_task_t *);
59:
60: /* SOCK_RAW */
61:
62: static sched_task_func_t cbProto[SOCK_RAW + 1][4] = {
63: { acceptClients, closeClient, rxPacket, txPacket }, /* SOCK_STREAM */
64: { acceptClients, closeClient, rxPacket, txPacket }, /* SOCK_STREAM */
65: { rxUDPPacket, freeClient, rxUDPPacket, txUDPPacket }, /* SOCK_DGRAM */
66: { NULL, NULL, NULL, NULL } /* SOCK_RAW */
67: };
68:
69:
70: void
71: rpc_freeCli(rpc_cli_t * __restrict c)
72: {
73: rpc_srv_t *s = c->cli_parent;
74:
75: schedCancelby(s->srv_root, taskMAX, CRITERIA_ARG, c, NULL);
76:
77: /* free buffer */
78: AIT_FREE_VAL(&c->cli_buf);
79:
80: array_Del(s->srv_clients, c->cli_id, 0);
81: if (c)
82: e_free(c);
83: }
84:
85:
86: static inline int
87: _check4freeslot(rpc_srv_t * __restrict srv, sockaddr_t * __restrict sa)
88: {
89: rpc_cli_t *c = NULL;
90: register int i;
91:
92: /* check free slots for connect */
93: for (i = 0; i < array_Size(srv->srv_clients) &&
94: (c = array(srv->srv_clients, i, rpc_cli_t*)); i++)
95: /* check for duplicates */
96: if (sa && !e_addrcmp(&c->cli_sa, sa, 42))
97: break;
98: if (i >= array_Size(srv->srv_clients))
99: return -1; /* no more free slots! */
100:
101: return i;
102: }
103:
104: static rpc_cli_t *
105: _allocClient(rpc_srv_t * __restrict srv, sockaddr_t * __restrict sa)
106: {
107: rpc_cli_t *c = NULL;
108: int n;
109:
110: n = _check4freeslot(srv, sa);
111: if (n == -1)
112: return NULL;
113: else
114: c = array(srv->srv_clients, n, rpc_cli_t*);
115:
116: if (!c) {
117: c = e_malloc(sizeof(rpc_cli_t));
118: if (!c) {
119: LOGERR;
120: srv->srv_kill = 1;
121: return NULL;
122: } else {
123: memset(c, 0, sizeof(rpc_cli_t));
124: array_Set(srv->srv_clients, n, c);
125: c->cli_id = n;
126: c->cli_parent = srv;
127: }
128:
129: /* alloc empty buffer */
130: AIT_SET_BUFSIZ(&c->cli_buf, 0, srv->srv_netbuf);
131: }
132:
133: return c;
134: }
135:
136:
137: static void *
138: freeClient(sched_task_t *task)
139: {
140: rpc_freeCli(TASK_ARG(task));
141:
142: return NULL;
143: }
144:
145: static void *
146: closeClient(sched_task_t *task)
147: {
148: int sock = ((rpc_cli_t*) TASK_ARG(task))->cli_sock;
149:
150: rpc_freeCli(TASK_ARG(task));
151:
152: /* close client socket */
153: shutdown(sock, SHUT_RDWR);
154: close(sock);
155: return NULL;
156: }
157:
158: static void *
159: txPacket(sched_task_t *task)
160: {
161: rpc_cli_t *c = TASK_ARG(task);
162: rpc_srv_t *s = c->cli_parent;
163: rpc_func_t *f = NULL;
164: u_char *buf = AIT_GET_BUF(&c->cli_buf);
165: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
166: int ret, estlen, wlen = sizeof(struct tagRPCCall);
167: struct pollfd pfd;
168: #ifdef TCP_SESSION_TIMEOUT
169: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
170:
171: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
172: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
173: TASK_ARG(task), ts, TASK_ARG(task), 0);
174: #endif
175:
176: if (rpc->call_argc) {
177: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
178: if (!f) {
179: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
180:
181: rpc->call_argc ^= rpc->call_argc;
182: rpc->call_rep.ret = RPC_ERROR(-1);
183: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
184: } else {
185: /* calc estimated length */
186: estlen = ait_resideVars(RPC_RETVARS(c)) + wlen;
187: if (estlen > AIT_LEN(&c->cli_buf))
188: AIT_RE_BUF(&c->cli_buf, estlen);
189: buf = AIT_GET_BUF(&c->cli_buf);
190: rpc = (struct tagRPCCall*) buf;
191:
192: rpc->call_argc = htons(array_Size(RPC_RETVARS(c)));
193: /* Go Encapsulate variables */
194: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
195: RPC_RETVARS(c));
196: /* Free return values */
197: ait_freeVars(&c->cli_vars);
198: if (ret == -1) {
199: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
200:
201: rpc->call_argc ^= rpc->call_argc;
202: rpc->call_rep.ret = RPC_ERROR(-1);
203: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
204: } else
205: wlen += ret;
206: }
207: }
208:
209: rpc->call_len = htonl(wlen);
210:
211: #if 0
212: /* calculate CRC */
213: rpc->call_crc ^= rpc->call_crc;
214: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
215: #endif
216:
217: /* send reply */
218: pfd.fd = TASK_FD(task);
219: pfd.events = POLLOUT;
220: for (; wlen > 0; wlen -= ret, buf += ret) {
221: if ((ret = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 ||
222: pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
223: if (ret)
224: LOGERR;
225: else
226: rpc_SetErr(ETIMEDOUT, "Timeout reached! Server not respond");
227: /* close connection */
228: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
229: TASK_ARG(task), 0, NULL, 0);
230: return NULL;
231: }
232: ret = send(TASK_FD(task), buf, MIN(wlen, s->srv_netbuf), MSG_NOSIGNAL);
233: if (ret == -1) {
234: /* close connection */
235: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
236: TASK_ARG(task), 0, NULL, 0);
237: return NULL;
238: }
239: }
240:
241: return NULL;
242: }
243:
244: static void *
245: execCall(sched_task_t *task)
246: {
247: rpc_cli_t *c = TASK_ARG(task);
248: rpc_srv_t *s = c->cli_parent;
249: rpc_func_t *f = NULL;
250: array_t *arr = NULL;
251: u_char *buf = AIT_GET_BUF(&c->cli_buf);
252: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
253: int argc = ntohs(rpc->call_argc);
254:
255: /* Go decapsulate variables ... */
256: if (argc) {
257: arr = ait_buffer2vars(buf + sizeof(struct tagRPCCall),
258: AIT_LEN(&c->cli_buf) - sizeof(struct tagRPCCall), argc, 42);
259: if (!arr) {
260: rpc_SetErr(ERPCMISMATCH, "#%d - %s", elwix_GetErrno(), elwix_GetError());
261:
262: rpc->call_argc ^= rpc->call_argc;
263: rpc->call_rep.ret = RPC_ERROR(-1);
264: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
265: return NULL;
266: }
267: } else
268: arr = NULL;
269:
270: if (!(f = rpc_srv_getCall(s, ntohs(rpc->call_tag)))) {
271: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
272:
273: rpc->call_argc ^= rpc->call_argc;
274: rpc->call_rep.ret = RPC_ERROR(-1);
275: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
276: } else {
277: /* if client doesn't want reply */
278: argc = RPC_CHK_NOREPLY(rpc);
279: rpc->call_rep.ret = RPC_ERROR(rpc_srv_execCall(c, rpc, f->func_name, arr));
280: if (rpc->call_rep.ret == htonl(-1)) {
281: if (!rpc->call_rep.eno) {
282: LOGERR;
283: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
284: }
285: rpc->call_argc ^= rpc->call_argc;
286: } else {
287: rpc->call_rep.eno ^= rpc->call_rep.eno;
288: if (argc) {
289: /* without reply */
290: ait_freeVars(&c->cli_vars);
291: rpc->call_argc ^= rpc->call_argc;
292: } else {
293: /* reply */
294: rpc->call_argc = htons(array_Size(RPC_RETVARS(c)));
295: }
296: }
297: }
298:
299: array_Destroy(&arr);
300: return NULL;
301: }
302:
303: static void *
304: rxPacket(sched_task_t *task)
305: {
306: rpc_cli_t *c = TASK_ARG(task);
307: rpc_srv_t *s = c->cli_parent;
308: int len, rlen, noreply, estlen;
309: #if 0
310: u_short crc;
311: #endif
312: u_char *buf = AIT_GET_BUF(&c->cli_buf);
313: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
314: struct pollfd pfd;
315: #ifdef TCP_SESSION_TIMEOUT
316: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
317:
318: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
319: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
320: TASK_ARG(task), ts, TASK_ARG(task), 0);
321: #endif
322:
323: memset(buf, 0, sizeof(struct tagRPCCall));
324: rlen = recv(TASK_FD(task), rpc, sizeof(struct tagRPCCall), MSG_PEEK);
325: if (rlen < sizeof(struct tagRPCCall)) {
326: /* close connection */
327: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
328: TASK_ARG(task), 0, NULL, 0);
329: return NULL;
330: } else {
331: estlen = ntohl(rpc->call_len);
332: if (estlen > AIT_LEN(&c->cli_buf))
333: AIT_RE_BUF(&c->cli_buf, estlen);
334: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
335: buf = AIT_GET_BUF(&c->cli_buf);
336: len = estlen;
337: }
338:
339: /* get next part of packet */
340: memset(buf, 0, len);
341: pfd.fd = TASK_FD(task);
342: pfd.events = POLLIN | POLLPRI;
343: for (; len > 0; len -= rlen, buf += rlen) {
344: if ((rlen = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 ||
345: pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
346: if (rlen)
347: LOGERR;
348: else
349: rpc_SetErr(ETIMEDOUT, "Timeout reached! Server not respond");
350: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
351: TASK_ARG(task), 0, NULL, 0);
352: return NULL;
353: }
354: rlen = recv(TASK_FD(task), buf, len, 0);
355: if (rlen == -1) {
356: /* close connection */
357: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
358: TASK_ARG(task), 0, NULL, 0);
359: return NULL;
360: }
361: }
362: len = estlen;
363:
364: #if 0
365: /* check integrity of packet */
366: crc = ntohs(rpc->call_crc);
367: rpc->call_crc ^= rpc->call_crc;
368: if (crc != crcFletcher16((u_short*) rpc, len / 2)) {
369: rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet");
370: return NULL;
371: }
372: #endif
373:
374: noreply = RPC_CHK_NOREPLY(rpc);
375:
376: /* check RPC packet session info */
377: if (rpc_chkPktSession(&rpc->call_session, &s->srv_session)) {
378: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
379:
380: rpc->call_argc ^= rpc->call_argc;
381: rpc->call_rep.ret = RPC_ERROR(-1);
382: rpc->call_rep.eno = RPC_ERROR(errno);
383: } else {
384: /* execute RPC call */
385: schedEvent(TASK_ROOT(task), execCall, TASK_ARG(task), (int) noreply, rpc, len);
386: }
387:
388: /* send RPC reply */
389: if (!noreply)
390: schedWrite(TASK_ROOT(task), cbProto[s->srv_proto][CB_TXPACKET],
391: TASK_ARG(task), TASK_FD(task), rpc, len);
392:
393: /* lets get next packet */
394: schedReadSelf(task);
395: return NULL;
396: }
397:
398: static void *
399: acceptClients(sched_task_t *task)
400: {
401: rpc_srv_t *srv = TASK_ARG(task);
402: rpc_cli_t *c = NULL;
403: socklen_t salen = sizeof(sockaddr_t);
404: int sock;
405: #ifdef TCP_SESSION_TIMEOUT
406: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
407: #endif
408:
409: c = _allocClient(srv, NULL);
410: if (!c) {
411: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
412: if ((sock = accept(TASK_FD(task), NULL, NULL)) != -1) {
413: shutdown(sock, SHUT_RDWR);
414: close(sock);
415: }
416: goto end;
417: }
418:
419: /* accept client */
420: c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen);
421: if (c->cli_sock == -1) {
422: LOGERR;
423: AIT_FREE_VAL(&c->cli_buf);
424: array_Del(srv->srv_clients, c->cli_id, 42);
425: goto end;
426: } else
427: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
428:
429: #ifdef TCP_SESSION_TIMEOUT
430: /* armed timer for close stateless connection */
431: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
432: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT], c,
433: ts, c, 0);
434: #endif
435: schedRead(TASK_ROOT(task), cbProto[srv->srv_proto][CB_RXPACKET], c,
436: c->cli_sock, NULL, 0);
437: end:
438: schedReadSelf(task);
439: return NULL;
440: }
441:
442:
443: static void *
444: txUDPPacket(sched_task_t *task)
445: {
446: rpc_cli_t *c = TASK_ARG(task);
447: rpc_srv_t *s = c->cli_parent;
448: rpc_func_t *f = NULL;
449: u_char *buf = AIT_GET_BUF(&c->cli_buf);
450: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
451: int ret, estlen, wlen = sizeof(struct tagRPCCall);
452: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
453: struct pollfd pfd;
454:
455: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
456: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
457: TASK_ARG(task), ts, TASK_ARG(task), 0);
458:
459: if (rpc->call_argc) {
460: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
461: if (!f) {
462: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
463: rpc->call_argc ^= rpc->call_argc;
464: rpc->call_rep.ret = RPC_ERROR(-1);
465: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
466: } else {
467: /* calc estimated length */
468: estlen = ait_resideVars(RPC_RETVARS(c)) + wlen;
469: if (estlen > AIT_LEN(&c->cli_buf))
470: AIT_RE_BUF(&c->cli_buf, estlen);
471: buf = AIT_GET_BUF(&c->cli_buf);
472: rpc = (struct tagRPCCall*) buf;
473:
474: rpc->call_argc = htons(array_Size(RPC_RETVARS(c)));
475: /* Go Encapsulate variables */
476: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
477: RPC_RETVARS(c));
478: /* Free return values */
479: ait_freeVars(&c->cli_vars);
480: if (ret == -1) {
481: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
482: rpc->call_argc ^= rpc->call_argc;
483: rpc->call_rep.ret = RPC_ERROR(-1);
484: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
485: } else
486: wlen += ret;
487: }
488: }
489:
490: rpc->call_len = htonl(wlen);
491:
492: /* calculate CRC */
493: rpc->call_crc ^= rpc->call_crc;
494: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
495:
496: /* send reply */
497: pfd.fd = TASK_FD(task);
498: pfd.events = POLLOUT;
499: for (; wlen > 0; wlen -= ret, buf += ret) {
500: if ((ret = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 ||
501: pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
502: if (ret)
503: LOGERR;
504: else
505: rpc_SetErr(ETIMEDOUT, "Timeout reached! Server not respond");
506: /* close connection */
507: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
508: TASK_ARG(task), 0, NULL, 0);
509: return NULL;
510: }
511: ret = sendto(TASK_FD(task), buf, MIN(wlen, s->srv_netbuf), MSG_NOSIGNAL,
512: &c->cli_sa.sa, c->cli_sa.sa.sa_len);
513: if (ret == -1) {
514: /* close connection */
515: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
516: TASK_ARG(task), 0, NULL, 0);
517: return NULL;
518: }
519: }
520:
521: return NULL;
522: }
523:
524: static void *
525: rxUDPPacket(sched_task_t *task)
526: {
527: rpc_srv_t *srv = TASK_ARG(task);
528: rpc_cli_t *c = NULL;
529: int len, rlen, noreply, estlen;
530: u_short crc;
531: u_char *buf, b[sizeof(struct tagRPCCall)];
532: struct tagRPCCall *rpc = (struct tagRPCCall*) b;
533: sockaddr_t sa;
534: socklen_t salen;
535: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
536: struct pollfd pfd;
537:
538: /* receive connect packet */
539: salen = sa.ss.ss_len = sizeof(sockaddr_t);
540: rlen = recvfrom(TASK_FD(task), b, sizeof b, MSG_PEEK, &sa.sa, &salen);
541: if (rlen < sizeof(struct tagRPCCall)) {
542: rpc_SetErr(ERPCMISMATCH, "Short RPC packet");
543: goto end;
544: }
545:
546: c = _allocClient(srv, &sa);
547: if (!c) {
548: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
549: usleep(2000); /* blocked client delay */
550: goto end;
551: } else {
552: estlen = ntohl(rpc->call_len);
553: if (estlen > AIT_LEN(&c->cli_buf))
554: AIT_RE_BUF(&c->cli_buf, estlen);
555: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
556: buf = AIT_GET_BUF(&c->cli_buf);
557: len = estlen;
558:
559: c->cli_sock = TASK_FD(task);
560: memcpy(&c->cli_sa, &sa, sizeof c->cli_sa);
561:
562: /* armed timer for close stateless connection */
563: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
564: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
565: c, ts, c, 0);
566: }
567:
568: /* get next part of packet */
569: memset(buf, 0, len);
570: pfd.fd = TASK_FD(task);
571: pfd.events = POLLIN | POLLPRI;
572: for (; len > 0; len -= rlen, buf += rlen) {
573: if ((rlen = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 ||
574: pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
575: if (rlen)
576: LOGERR;
577: else
578: rpc_SetErr(ETIMEDOUT, "Timeout reached! Server not respond");
579: schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
580: c, 0, NULL, 0);
581: return NULL;
582: }
583: salen = sa.ss.ss_len = sizeof(sockaddr_t);
584: rlen = recvfrom(TASK_FD(task), buf, len, 0, &sa.sa, &salen);
585: if (rlen == -1) {
586: /* close connection */
587: schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
588: c, 0, NULL, 0);
589: return NULL;
590: }
591: if (e_addrcmp(&c->cli_sa, &sa, 42))
592: rlen ^= rlen; /* skip if arrive from different address */
593: }
594: len = estlen;
595:
596: /* check integrity of packet */
597: crc = ntohs(rpc->call_crc);
598: rpc->call_crc ^= rpc->call_crc;
599: if (crc != crcFletcher16((u_short*) rpc, len / 2)) {
600: rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet");
601: return NULL;
602: }
603:
604: noreply = RPC_CHK_NOREPLY(rpc);
605:
606: /* check RPC packet session info */
607: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session)) {
608: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
609:
610: rpc->call_argc ^= rpc->call_argc;
611: rpc->call_rep.ret = RPC_ERROR(-1);
612: rpc->call_rep.eno = RPC_ERROR(errno);
613: } else {
614: /* execute RPC call */
615: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
616: }
617:
618: /* send RPC reply */
619: if (!noreply)
620: schedWrite(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
621: c, TASK_FD(task), rpc, len);
622: end:
623: schedReadSelf(task);
624: return NULL;
625: }
626:
627: /* ------------------------------------------------------ */
628:
629: void
630: rpc_freeBLOBCli(rpc_cli_t * __restrict c)
631: {
632: rpc_srv_t *s = c->cli_parent;
633:
634: schedCancelby(s->srv_blob.root, taskMAX, CRITERIA_ARG, c, NULL);
635:
636: /* free buffer */
637: AIT_FREE_VAL(&c->cli_buf);
638:
639: array_Del(s->srv_blob.clients, c->cli_id, 0);
640: if (c)
641: e_free(c);
642: }
643:
644:
645: static void *
646: closeBLOBClient(sched_task_t *task)
647: {
648: int sock = ((rpc_cli_t*) TASK_ARG(task))->cli_sock;
649:
650: rpc_freeBLOBCli(TASK_ARG(task));
651:
652: /* close client socket */
653: shutdown(sock, SHUT_RDWR);
654: close(sock);
655: return NULL;
656: }
657:
658: static void *
659: txBLOB(sched_task_t *task)
660: {
661: rpc_cli_t *c = TASK_ARG(task);
662: u_char *buf = AIT_GET_BUF(&c->cli_buf);
663: int wlen = sizeof(struct tagBLOBHdr);
664:
665: /* send reply */
666: wlen = send(TASK_FD(task), buf, wlen, MSG_NOSIGNAL);
667: if (wlen == -1 || wlen != sizeof(struct tagBLOBHdr)) {
668: /* close blob connection */
669: schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0);
670: }
671:
672: return NULL;
673: }
674:
675: static void *
676: rxBLOB(sched_task_t *task)
677: {
678: rpc_cli_t *c = TASK_ARG(task);
679: rpc_srv_t *s = c->cli_parent;
680: rpc_blob_t *b;
681: struct tagBLOBHdr blob;
682: int rlen;
683:
684: memset(&blob, 0, sizeof blob);
685: rlen = recv(TASK_FD(task), &blob, sizeof blob, 0);
686: if (rlen < 1) {
687: /* close blob connection */
688: schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0);
689: return NULL;
690: }
691:
692: /* check BLOB packet */
693: if (rlen < sizeof(struct tagBLOBHdr)) {
694: rpc_SetErr(ERPCMISMATCH, "Short BLOB packet");
695:
696: schedReadSelf(task);
697: return NULL;
698: }
699:
700: /* check RPC packet session info */
701: if (rpc_chkPktSession(&blob.hdr_session, &s->srv_session)) {
702: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
703: blob.hdr_cmd = error;
704: goto end;
705: }
706:
707: /* Go to proceed packet ... */
708: switch (blob.hdr_cmd) {
709: case get:
710: if (!(b = rpc_srv_getBLOB(s, ntohl(blob.hdr_var)))) {
711: rpc_SetErr(EINVAL, "Var=%x not found", ntohl(blob.hdr_var));
712: blob.hdr_cmd = no;
713: blob.hdr_ret = RPC_ERROR(-1);
714: break;
715: } else
716: blob.hdr_len = htonl(b->blob_len);
717:
718: if (rpc_srv_blobMap(s, b) != -1) {
719: /* deliver BLOB variable to client */
720: blob.hdr_ret = htonl(rpc_srv_sendBLOB(c, b));
721: rpc_srv_blobUnmap(b);
722: } else {
723: blob.hdr_cmd = error;
724: blob.hdr_ret = RPC_ERROR(-1);
725: }
726: break;
727: case set:
728: if ((b = rpc_srv_registerBLOB(s, ntohl(blob.hdr_len),
729: ntohl(blob.hdr_ret)))) {
730: /* set new BLOB variable for reply :) */
731: blob.hdr_var = htonl(b->blob_var);
732:
733: /* receive BLOB from client */
734: blob.hdr_ret = htonl(rpc_srv_recvBLOB(c, b));
735: rpc_srv_blobUnmap(b);
736: } else {
737: blob.hdr_cmd = error;
738: blob.hdr_ret = RPC_ERROR(-1);
739: }
740: break;
741: case unset:
742: if (rpc_srv_unregisterBLOB(s, ntohl(blob.hdr_var)) == -1) {
743: blob.hdr_cmd = error;
744: blob.hdr_ret = RPC_ERROR(-1);
745: }
746: break;
747: default:
748: rpc_SetErr(EPROCUNAVAIL, "Unsupported BLOB command %d", blob.hdr_cmd);
749: blob.hdr_cmd = error;
750: blob.hdr_ret = RPC_ERROR(-1);
751: }
752:
753: end:
754: memcpy(AIT_ADDR(&c->cli_buf), &blob, sizeof blob);
755: schedWrite(TASK_ROOT(task), txBLOB, TASK_ARG(task), TASK_FD(task), NULL, 0);
756: schedReadSelf(task);
757: return NULL;
758: }
759:
760: static void *
761: flushBLOB(sched_task_t *task)
762: {
763: rpc_srv_t *srv = TASK_ARG(task);
764: rpc_blob_t *b, *tmp;
765:
766: TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) {
767: TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node);
768:
769: rpc_srv_blobFree(srv, b);
770: e_free(b);
771: }
772:
773: schedSignalSelf(task);
774: return NULL;
775: }
776:
777: static void *
778: acceptBLOBClients(sched_task_t *task)
779: {
780: rpc_srv_t *srv = TASK_ARG(task);
781: rpc_cli_t *c = NULL;
782: register int i;
783: socklen_t salen = sizeof(sockaddr_t);
784: int sock;
785: #ifdef TCP_NOPUSH
786: int n = 1;
787: #endif
788:
789: /* check free slots for connect */
790: for (i = 0; i < array_Size(srv->srv_blob.clients) &&
791: (c = array(srv->srv_blob.clients, i, rpc_cli_t*)); i++);
792: if (c) { /* no more free slots! */
793: EVERBOSE(1, "BLOB client quota exceeded! Connection will be shutdown!\n");
794: if ((sock = accept(TASK_FD(task), NULL, NULL)) != -1) {
795: shutdown(sock, SHUT_RDWR);
796: close(sock);
797: }
798: goto end;
799: }
800:
801: c = e_malloc(sizeof(rpc_cli_t));
802: if (!c) {
803: LOGERR;
804: srv->srv_kill = srv->srv_blob.kill = 1;
805: return NULL;
806: } else {
807: memset(c, 0, sizeof(rpc_cli_t));
808: array_Set(srv->srv_blob.clients, i, c);
809: c->cli_id = i;
810: c->cli_parent = srv;
811: }
812:
813: /* alloc empty buffer */
814: AIT_SET_BUFSIZ(&c->cli_buf, 0, srv->srv_netbuf);
815:
816: /* accept client */
817: c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen);
818: if (c->cli_sock == -1) {
819: LOGERR;
820: AIT_FREE_VAL(&c->cli_buf);
821: array_Del(srv->srv_blob.clients, i, 42);
822: goto end;
823: } else {
824: #ifdef TCP_NOPUSH
825: setsockopt(c->cli_sock, IPPROTO_TCP, TCP_NOPUSH, &n, sizeof n);
826: #endif
827: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
828: }
829:
830: schedRead(TASK_ROOT(task), rxBLOB, c, c->cli_sock, NULL, 0);
831: end:
832: schedReadSelf(task);
833: return NULL;
834: }
835:
836: /* ------------------------------------------------------ */
837:
838: /*
839: * rpc_srv_initBLOBServer() - Init & create BLOB Server
840: *
841: * @srv = RPC server instance
842: * @Port = Port for bind server, if Port == 0 default port is selected
843: * @diskDir = Disk place for BLOB file objects
844: * return: -1 == error or 0 bind and created BLOB server instance
845: */
846: int
847: rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, u_short Port, const char *diskDir)
848: {
849: int n = 1;
850:
851: if (!srv || srv->srv_kill) {
852: rpc_SetErr(EINVAL, "Invalid parameters can`t init BLOB server");
853: return -1;
854: }
855:
856: memset(&srv->srv_blob, 0, sizeof srv->srv_blob);
857: if (access(diskDir, R_OK | W_OK) == -1) {
858: LOGERR;
859: return -1;
860: } else
861: AIT_SET_STR(&srv->srv_blob.dir, diskDir);
862:
863: /* init blob list */
864: TAILQ_INIT(&srv->srv_blob.blobs);
865:
866: srv->srv_blob.server.cli_parent = srv;
867:
868: memcpy(&srv->srv_blob.server.cli_sa, &srv->srv_server.cli_sa, sizeof(sockaddr_t));
869: switch (srv->srv_blob.server.cli_sa.sa.sa_family) {
870: case AF_INET:
871: srv->srv_blob.server.cli_sa.sin.sin_port =
872: htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin.sin_port) + 1);
873: break;
874: case AF_INET6:
875: srv->srv_blob.server.cli_sa.sin6.sin6_port =
876: htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin6.sin6_port) + 1);
877: break;
878: case AF_LOCAL:
879: strlcat(srv->srv_blob.server.cli_sa.sun.sun_path, ".blob",
880: sizeof srv->srv_blob.server.cli_sa.sun.sun_path);
881: break;
882: default:
883: AIT_FREE_VAL(&srv->srv_blob.dir);
884: return -1;
885: }
886:
887: /* create BLOB server socket */
888: srv->srv_blob.server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, SOCK_STREAM, 0);
889: if (srv->srv_blob.server.cli_sock == -1) {
890: LOGERR;
891: AIT_FREE_VAL(&srv->srv_blob.dir);
892: return -1;
893: }
894: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
895: LOGERR;
896: close(srv->srv_blob.server.cli_sock);
897: AIT_FREE_VAL(&srv->srv_blob.dir);
898: return -1;
899: }
900: n = srv->srv_netbuf;
901: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
902: LOGERR;
903: close(srv->srv_blob.server.cli_sock);
904: AIT_FREE_VAL(&srv->srv_blob.dir);
905: return -1;
906: }
907: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
908: LOGERR;
909: close(srv->srv_blob.server.cli_sock);
910: AIT_FREE_VAL(&srv->srv_blob.dir);
911: return -1;
912: }
913: if (bind(srv->srv_blob.server.cli_sock, &srv->srv_blob.server.cli_sa.sa,
914: srv->srv_blob.server.cli_sa.sa.sa_len) == -1) {
915: LOGERR;
916: close(srv->srv_blob.server.cli_sock);
917: AIT_FREE_VAL(&srv->srv_blob.dir);
918: return -1;
919: } else
920: fcntl(srv->srv_blob.server.cli_sock, F_SETFL,
921: fcntl(srv->srv_blob.server.cli_sock, F_GETFL) | O_NONBLOCK);
922:
923:
924: /* allocate pool for concurent blob clients */
925: srv->srv_blob.clients = array_Init(array_Size(srv->srv_clients));
926: if (!srv->srv_blob.clients) {
927: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
928: close(srv->srv_blob.server.cli_sock);
929: AIT_FREE_VAL(&srv->srv_blob.dir);
930: return -1;
931: }
932:
933: /* init blob scheduler */
934: srv->srv_blob.root = schedBegin();
935: if (!srv->srv_blob.root) {
936: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
937: array_Destroy(&srv->srv_blob.clients);
938: close(srv->srv_blob.server.cli_sock);
939: AIT_FREE_VAL(&srv->srv_blob.dir);
940: return -1;
941: }
942:
943: return 0;
944: }
945:
946: /*
947: * rpc_srv_endBLOBServer() - Destroy BLOB server, close all opened sockets and free resources
948: *
949: * @srv = RPC Server instance
950: * return: none
951: */
952: void
953: rpc_srv_endBLOBServer(rpc_srv_t * __restrict srv)
954: {
955: if (!srv)
956: return;
957:
958: srv->srv_blob.kill = 1;
959:
960: schedEnd(&srv->srv_blob.root);
961: }
962:
963: /*
964: * rpc_srv_loopBLOBServer() - Execute Main BLOB server loop and wait for clients requests
965: *
966: * @srv = RPC Server instance
967: * return: -1 error or 0 ok, infinite loop ...
968: */
969: int
970: rpc_srv_loopBLOBServer(rpc_srv_t * __restrict srv)
971: {
972: rpc_cli_t *c;
973: register int i;
974: rpc_blob_t *b, *tmp;
975: struct timespec ts = { RPC_SCHED_POLLING, 0 };
976:
977: if (!srv || srv->srv_kill) {
978: rpc_SetErr(EINVAL, "Invalid parameter can`t start BLOB server");
979: return -1;
980: }
981:
982: if (listen(srv->srv_blob.server.cli_sock, array_Size(srv->srv_blob.clients)) == -1) {
983: LOGERR;
984: return -1;
985: }
986:
987: schedSignal(srv->srv_blob.root, flushBLOB, srv, SIGFBLOB, NULL, 0);
988: if (!schedRead(srv->srv_blob.root, acceptBLOBClients, srv,
989: srv->srv_blob.server.cli_sock, NULL, 0)) {
990: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
991: return -1;
992: }
993:
994: schedPolling(srv->srv_blob.root, &ts, NULL);
995: /* main rpc loop */
996: schedRun(srv->srv_blob.root, &srv->srv_blob.kill);
997:
998: /* detach blobs */
999: TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) {
1000: TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node);
1001:
1002: rpc_srv_blobFree(srv, b);
1003: e_free(b);
1004: }
1005:
1006: /* close all clients connections & server socket */
1007: for (i = 0; i < array_Size(srv->srv_blob.clients); i++) {
1008: c = array(srv->srv_blob.clients, i, rpc_cli_t*);
1009: if (c) {
1010: shutdown(c->cli_sock, SHUT_RDWR);
1011: close(c->cli_sock);
1012:
1013: schedCancelby(srv->srv_blob.root, taskMAX, CRITERIA_ARG, c, NULL);
1014: AIT_FREE_VAL(&c->cli_buf);
1015: }
1016: array_Del(srv->srv_blob.clients, i, 42);
1017: }
1018: array_Destroy(&srv->srv_blob.clients);
1019:
1020: close(srv->srv_blob.server.cli_sock);
1021:
1022: AIT_FREE_VAL(&srv->srv_blob.dir);
1023: return 0;
1024: }
1025:
1026:
1027: /*
1028: * rpc_srv_initServer() - Init & create RPC Server
1029: *
1030: * @InstID = Instance for authentication & recognition
1031: * @concurentClients = Concurent clients at same time to this server
1032: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
1033: * @csHost = Host name or address for bind server, if NULL any address
1034: * @Port = Port for bind server, if Port == 0 default port is selected
1035: * @proto = Protocol, if == 0 choose SOCK_STREAM
1036: * return: NULL == error or !=NULL bind and created RPC server instance
1037: */
1038: rpc_srv_t *
1039: rpc_srv_initServer(u_char InstID, int concurentClients, int netBuf,
1040: const char *csHost, u_short Port, int proto)
1041: {
1042: int n = 1;
1043: rpc_srv_t *srv = NULL;
1044: sockaddr_t sa = E_SOCKADDR_INIT;
1045:
1046: if (!concurentClients || (proto < 0 || proto > SOCK_DGRAM)) {
1047: rpc_SetErr(EINVAL, "Invalid parameters can`t init RPC server");
1048: return NULL;
1049: }
1050: if (!e_gethostbyname(csHost, Port, &sa))
1051: return NULL;
1052: if (!Port)
1053: Port = RPC_DEFPORT;
1054: if (!proto)
1055: proto = SOCK_STREAM;
1056: if (netBuf < RPC_MIN_BUFSIZ)
1057: netBuf = BUFSIZ;
1058: else
1059: netBuf = E_ALIGN(netBuf, 2); /* align netBuf length */
1060:
1061: #ifdef HAVE_SRANDOMDEV
1062: srandomdev();
1063: #else
1064: time_t tim;
1065:
1066: srandom((time(&tim) ^ getpid()));
1067: #endif
1068:
1069: srv = e_malloc(sizeof(rpc_srv_t));
1070: if (!srv) {
1071: LOGERR;
1072: return NULL;
1073: } else
1074: memset(srv, 0, sizeof(rpc_srv_t));
1075:
1076: srv->srv_proto = proto;
1077: srv->srv_netbuf = netBuf;
1078: srv->srv_session.sess_version = RPC_VERSION;
1079: srv->srv_session.sess_instance = InstID;
1080:
1081: srv->srv_server.cli_parent = srv;
1082: memcpy(&srv->srv_server.cli_sa, &sa, sizeof srv->srv_server.cli_sa);
1083:
1084: /* init functions */
1085: pthread_mutex_init(&srv->srv_funcs.mtx, NULL);
1086: SLIST_INIT(&srv->srv_funcs);
1087: AVL_INIT(&srv->srv_funcs);
1088:
1089: /* init scheduler */
1090: srv->srv_root = schedBegin();
1091: if (!srv->srv_root) {
1092: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1093: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1094: e_free(srv);
1095: return NULL;
1096: }
1097:
1098: /* init pool for clients */
1099: srv->srv_clients = array_Init(concurentClients);
1100: if (!srv->srv_clients) {
1101: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1102: schedEnd(&srv->srv_root);
1103: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1104: e_free(srv);
1105: return NULL;
1106: }
1107:
1108: /* create server socket */
1109: srv->srv_server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, srv->srv_proto, 0);
1110: if (srv->srv_server.cli_sock == -1) {
1111: LOGERR;
1112: array_Destroy(&srv->srv_clients);
1113: schedEnd(&srv->srv_root);
1114: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1115: e_free(srv);
1116: return NULL;
1117: }
1118: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
1119: LOGERR;
1120: goto err;
1121: }
1122: n = srv->srv_netbuf;
1123: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
1124: LOGERR;
1125: goto err;
1126: }
1127: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
1128: LOGERR;
1129: goto err;
1130: }
1131: if (bind(srv->srv_server.cli_sock, &srv->srv_server.cli_sa.sa,
1132: srv->srv_server.cli_sa.sa.sa_len) == -1) {
1133: LOGERR;
1134: goto err;
1135: } else
1136: fcntl(srv->srv_server.cli_sock, F_SETFL,
1137: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
1138:
1139: rpc_register_srvPing(srv);
1140:
1141: return srv;
1142: err: /* error condition */
1143: close(srv->srv_server.cli_sock);
1144: array_Destroy(&srv->srv_clients);
1145: schedEnd(&srv->srv_root);
1146: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1147: e_free(srv);
1148: return NULL;
1149: }
1150:
1151: /*
1152: * rpc_srv_endServer() - Destroy RPC server, close all opened sockets and free resources
1153: *
1154: * @psrv = RPC Server instance
1155: * return: none
1156: */
1157: void
1158: rpc_srv_endServer(rpc_srv_t ** __restrict psrv)
1159: {
1160: if (!psrv || !*psrv)
1161: return;
1162:
1163: /* if send kill to blob server */
1164: rpc_srv_endBLOBServer(*psrv);
1165:
1166: (*psrv)->srv_kill = 1;
1167: sleep(RPC_SCHED_POLLING);
1168:
1169: schedEnd(&(*psrv)->srv_root);
1170:
1171: pthread_mutex_destroy(&(*psrv)->srv_funcs.mtx);
1172: e_free(*psrv);
1173: *psrv = NULL;
1174: }
1175:
1176: /*
1177: * rpc_srv_loopServer() - Execute Main server loop and wait for clients requests
1178: *
1179: * @srv = RPC Server instance
1180: * return: -1 error or 0 ok, infinite loop ...
1181: */
1182: int
1183: rpc_srv_loopServer(rpc_srv_t * __restrict srv)
1184: {
1185: rpc_cli_t *c;
1186: register int i;
1187: rpc_func_t *f;
1188: struct timespec ts = { RPC_SCHED_POLLING, 0 };
1189:
1190: if (!srv) {
1191: rpc_SetErr(EINVAL, "Invalid parameter can`t start RPC server");
1192: return -1;
1193: }
1194:
1195: if (srv->srv_proto == SOCK_STREAM)
1196: if (listen(srv->srv_server.cli_sock, array_Size(srv->srv_clients)) == -1) {
1197: LOGERR;
1198: return -1;
1199: }
1200:
1201: if (!schedRead(srv->srv_root, cbProto[srv->srv_proto][CB_ACCEPTCLIENT], srv,
1202: srv->srv_server.cli_sock, NULL, 0)) {
1203: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1204: return -1;
1205: }
1206:
1207: schedPolling(srv->srv_root, &ts, NULL);
1208: /* main rpc loop */
1209: schedRun(srv->srv_root, &srv->srv_kill);
1210:
1211: /* close all clients connections & server socket */
1212: for (i = 0; i < array_Size(srv->srv_clients); i++) {
1213: c = array(srv->srv_clients, i, rpc_cli_t*);
1214: if (c) {
1215: shutdown(c->cli_sock, SHUT_RDWR);
1216: close(c->cli_sock);
1217:
1218: schedCancelby(srv->srv_root, taskMAX, CRITERIA_ARG, c, NULL);
1219: ait_freeVars(&RPC_RETVARS(c));
1220: AIT_FREE_VAL(&c->cli_buf);
1221: }
1222: array_Del(srv->srv_clients, i, 42);
1223: }
1224: array_Destroy(&srv->srv_clients);
1225:
1226: close(srv->srv_server.cli_sock);
1227:
1228: /* detach exported calls */
1229: RPC_FUNCS_LOCK(&srv->srv_funcs);
1230: while ((f = SLIST_FIRST(&srv->srv_funcs))) {
1231: SLIST_REMOVE_HEAD(&srv->srv_funcs, func_next);
1232:
1233: AIT_FREE_VAL(&f->func_name);
1234: e_free(f);
1235: }
1236: srv->srv_funcs.avlh_root = NULL;
1237: RPC_FUNCS_UNLOCK(&srv->srv_funcs);
1238:
1239: return 0;
1240: }
1241:
1242:
1243: /*
1244: * rpc_srv_execCall() Execute registered call from RPC server
1245: *
1246: * @cli = RPC client
1247: * @rpc = IN RPC call structure
1248: * @funcname = Execute RPC function
1249: * @args = IN RPC calling arguments from RPC client
1250: * return: -1 error, !=-1 ok
1251: */
1252: int
1253: rpc_srv_execCall(rpc_cli_t * __restrict cli, struct tagRPCCall * __restrict rpc,
1254: ait_val_t funcname, array_t * __restrict args)
1255: {
1256: rpc_callback_t func;
1257:
1258: if (!cli || !rpc || !AIT_ADDR(&funcname)) {
1259: rpc_SetErr(EINVAL, "Invalid parameter can`t exec function");
1260: return -1;
1261: }
1262:
1263: func = AIT_GET_LIKE(&funcname, rpc_callback_t);
1264: return func(cli, rpc, args);
1265: }
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