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 1.12.2.3 2012/11/16 10:20:55 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
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 *connectClients(sched_task_t *);
57: static void *disconnectClient(sched_task_t *);
58:
59: /* SOCK_RAW */
60:
61: static sched_task_func_t cbProto[SOCK_RAW + 1][4] = {
62: { acceptClients, closeClient, rxPacket, txPacket }, /* SOCK_STREAM */
63: { acceptClients, closeClient, rxPacket, txPacket }, /* SOCK_STREAM */
64: { connectClients, disconnectClient, NULL, NULL },
65: { NULL, NULL, NULL, NULL } /* SOCK_RAW */
66: };
67:
68:
69: static rpc_cli_t *
70: _allocClient(rpc_srv_t * __restrict srv)
71: {
72: rpc_cli_t *c = NULL;
73: register int i;
74:
75: /* check free slots for connect */
76: for (i = 0; i < io_arraySize(srv->srv_clients) &&
77: (c = io_array(srv->srv_clients, i, rpc_cli_t*)); i++);
78: if (c) /* no more free slots! */
79: return NULL;
80:
81: c = io_malloc(sizeof(rpc_cli_t));
82: if (!c) {
83: LOGERR;
84: srv->srv_kill = 1;
85: return NULL;
86: } else {
87: memset(c, 0, sizeof(rpc_cli_t));
88: io_arraySet(srv->srv_clients, i, c);
89: c->cli_id = i;
90: c->cli_parent = srv;
91: }
92:
93: /* alloc empty buffer */
94: AIT_SET_BUF2(&c->cli_buf, 0, srv->srv_netbuf);
95:
96: return c;
97: }
98:
99:
100: static void *
101: connectClients(sched_task_t *task)
102: {
103: rpc_srv_t *srv = TASK_ARG(task);
104: rpc_cli_t *c = NULL;
105: socklen_t salen = sizeof(io_sockaddr_t);
106:
107: c = _allocClient(srv);
108: if (!c)
109: goto end;
110:
111: /* accept client */
112: c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen);
113: if (c->cli_sock == -1) {
114: LOGERR;
115: AIT_FREE_VAL(&c->cli_buf);
116: io_arrayDel(srv->srv_clients, c->cli_id, 42);
117: goto end;
118: } else
119: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
120:
121: schedRead(TASK_ROOT(task), cbProto[srv->srv_proto][CB_RXPACKET], c,
122: c->cli_sock, NULL, 0);
123: end:
124: schedReadSelf(task);
125: return NULL;
126: }
127:
128: static void *
129: disconnectClient(sched_task_t *task)
130: {
131: rpc_cli_t *c = TASK_ARG(task);
132: rpc_srv_t *s = c->cli_parent;
133:
134: schedCancelby(TASK_ROOT(task), taskMAX, CRITERIA_ARG, TASK_ARG(task), NULL);
135:
136: /* free buffer */
137: AIT_FREE_VAL(&c->cli_buf);
138:
139: io_arrayDel(s->srv_clients, c->cli_id, 0);
140: if (c)
141: io_free(c);
142: return NULL;
143: }
144:
145: static void *
146: closeClient(sched_task_t *task)
147: {
148: rpc_cli_t *c = TASK_ARG(task);
149: rpc_srv_t *s = c->cli_parent;
150:
151: schedCancelby(TASK_ROOT(task), taskMAX, CRITERIA_ARG, TASK_ARG(task), NULL);
152:
153: /* close client socket */
154: if (TASK_VAL(task))
155: shutdown(c->cli_sock, SHUT_RDWR);
156: close(c->cli_sock);
157:
158: /* free buffer */
159: AIT_FREE_VAL(&c->cli_buf);
160:
161: io_arrayDel(s->srv_clients, c->cli_id, 0);
162: if (c)
163: io_free(c);
164: return NULL;
165: }
166:
167: static void *
168: txPacket(sched_task_t *task)
169: {
170: rpc_cli_t *c = TASK_ARG(task);
171: rpc_srv_t *s = c->cli_parent;
172: rpc_func_t *f = NULL;
173: u_char buf[USHRT_MAX] = { 0 };
174: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
175: int ret, wlen = sizeof(struct tagRPCCall);
176:
177: /* copy RPC header */
178: memcpy(buf, TASK_DATA(task), wlen);
179:
180: if (rpc->call_argc) {
181: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
182: if (!f) {
183: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
184: rpc->call_argc ^= rpc->call_argc;
185: rpc->call_rep.ret = RPC_ERROR(-1);
186: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
187: } else {
188: rpc->call_argc = htons(io_arraySize(RPC_RETVARS(c)));
189: /* Go Encapsulate variables */
190: ret = io_vars2buffer(buf + wlen, sizeof buf - wlen, RPC_RETVARS(c));
191: /* Free return values */
192: io_freeVars(&c->cli_vars);
193: if (ret == -1) {
194: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
195: rpc->call_argc ^= rpc->call_argc;
196: rpc->call_rep.ret = RPC_ERROR(-1);
197: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
198: } else
199: wlen += ret;
200: }
201: }
202:
203: rpc->call_len = htons(wlen);
204:
205: /* calculate CRC */
206: rpc->call_crc ^= rpc->call_crc;
207: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
208:
209: /* send reply */
210: ret = send(TASK_FD(task), buf, wlen, MSG_NOSIGNAL);
211: if (ret == -1 || ret != wlen) {
212: /* close connection */
213: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
214: c, 42, NULL, 0);
215: }
216:
217: return NULL;
218: }
219:
220: static void *
221: execCall(sched_task_t *task)
222: {
223: rpc_cli_t *c = TASK_ARG(task);
224: rpc_srv_t *s = c->cli_parent;
225: rpc_func_t *f = NULL;
226: array_t *arr = NULL;
227: u_char *buf = AIT_GET_BUF(&c->cli_buf) + TASK_VAL(task);
228: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
229: int argc = ntohs(rpc->call_argc);
230:
231: /* Go decapsulate variables ... */
232: if (argc) {
233: arr = io_buffer2vars(buf + sizeof(struct tagRPCCall),
234: AIT_LEN(&c->cli_buf) - TASK_VAL(task) - sizeof(struct tagRPCCall),
235: argc, 42);
236: if (!arr) {
237: rpc_SetErr(ERPCMISMATCH, "#%d - %s", io_GetErrno(), io_GetError());
238: rpc->call_argc ^= rpc->call_argc;
239: rpc->call_rep.ret = RPC_ERROR(-1);
240: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
241: return NULL;
242: }
243: } else
244: arr = NULL;
245:
246: if (!(f = rpc_srv_getCall(s, ntohs(rpc->call_tag)))) {
247: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
248: rpc->call_argc ^= rpc->call_argc;
249: rpc->call_rep.ret = RPC_ERROR(-1);
250: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
251: } else {
252: /* if client doesn't want reply */
253: argc = RPC_CHK_NOREPLY(rpc);
254: rpc->call_rep.ret = RPC_ERROR(rpc_srv_execCall(c, rpc, f->func_name, arr));
255: if (rpc->call_rep.ret == htonl(-1)) {
256: rpc->call_rep.eno = RPC_ERROR(errno);
257: rpc->call_argc ^= rpc->call_argc;
258: } else {
259: rpc->call_rep.eno ^= rpc->call_rep.eno;
260: if (argc) {
261: /* without reply */
262: io_freeVars(&c->cli_vars);
263: rpc->call_argc ^= rpc->call_argc;
264: } else {
265: /* reply */
266: rpc->call_argc = htons(io_arraySize(RPC_RETVARS(c)));
267: }
268: }
269: }
270:
271: io_arrayDestroy(&arr);
272: return NULL;
273: }
274:
275: static void *
276: rxPacket(sched_task_t *task)
277: {
278: rpc_cli_t *c = TASK_ARG(task);
279: rpc_srv_t *s = c->cli_parent;
280: int len, rlen, noreply;
281: u_short crc, off = TASK_DATLEN(task);
282: u_char *buf = AIT_GET_BUF(&c->cli_buf);
283: struct tagRPCCall *rpc;
284:
285: if (!off)
286: memset(buf, 0, AIT_LEN(&c->cli_buf));
287: rlen = recv(TASK_FD(task), buf + off, AIT_LEN(&c->cli_buf) - off, 0);
288: if (rlen < 1) {
289: /* close connection */
290: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
291: c, 42, NULL, 0);
292: return NULL;
293: } else {
294: rlen += off; /* add reminded bytes from previous rxPacket, if exists! */
295: off = 0; /* process buffer from start offset == 0 */
296: }
297:
298: do {
299: /* check RPC packet */
300: if (rlen < sizeof(struct tagRPCCall)) {
301: rpc_SetErr(ERPCMISMATCH, "Short RPC packet");
302:
303: /* reminder received previous bytes ;) */
304: schedRead(TASK_ROOT(task), TASK_FUNC(task), TASK_ARG(task),
305: TASK_FD(task), TASK_DATA(task), rlen);
306: return NULL;
307: } else
308: rpc = (struct tagRPCCall*) (buf + off);
309:
310: len = ntohs(rpc->call_len);
311: rlen -= len;
312:
313: /* check RPC packet lengths */
314: if (rlen < 0 || len < sizeof(struct tagRPCCall)) {
315: rpc_SetErr(ERPCMISMATCH, "Broken RPC packet length");
316: /* skip entire packet */
317: break;
318: }
319:
320: /* check integrity of packet */
321: crc = ntohs(rpc->call_crc);
322: rpc->call_crc ^= rpc->call_crc;
323: if (crc != crcFletcher16((u_short*) rpc, len / 2)) {
324: rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet");
325:
326: off += len;
327: /* try next packet remaining into buffer */
328: continue;
329: }
330:
331: noreply = RPC_CHK_NOREPLY(rpc);
332:
333: /* check RPC packet session info */
334: if (rpc_chkPktSession(&rpc->call_session, &s->srv_session)) {
335: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
336: rpc->call_argc ^= rpc->call_argc;
337: rpc->call_rep.ret = RPC_ERROR(-1);
338: rpc->call_rep.eno = RPC_ERROR(errno);
339: } else {
340: /* execute RPC call */
341: schedEvent(TASK_ROOT(task), execCall, TASK_ARG(task), off, NULL, 0);
342: }
343:
344: /* send RPC reply */
345: if (!noreply)
346: schedWrite(TASK_ROOT(task), cbProto[s->srv_proto][CB_TXPACKET],
347: TASK_ARG(task), TASK_FD(task), rpc, len);
348:
349: off += len;
350: } while (rlen > 0);
351:
352: /* lets get next packet */
353: schedRead(TASK_ROOT(task), TASK_FUNC(task), TASK_ARG(task), TASK_FD(task), TASK_DATA(task), 0);
354: return NULL;
355: }
356:
357: static void *
358: acceptClients(sched_task_t *task)
359: {
360: rpc_srv_t *srv = TASK_ARG(task);
361: rpc_cli_t *c = NULL;
362: socklen_t salen = sizeof(io_sockaddr_t);
363:
364: c = _allocClient(srv);
365: if (!c)
366: goto end;
367:
368: /* accept client */
369: c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen);
370: if (c->cli_sock == -1) {
371: LOGERR;
372: AIT_FREE_VAL(&c->cli_buf);
373: io_arrayDel(srv->srv_clients, c->cli_id, 42);
374: goto end;
375: } else
376: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
377:
378: schedRead(TASK_ROOT(task), cbProto[srv->srv_proto][CB_RXPACKET], c,
379: c->cli_sock, NULL, 0);
380: end:
381: schedReadSelf(task);
382: return NULL;
383: }
384:
385: /* ------------------------------------------------------ */
386:
387: static void *
388: closeBLOBClient(sched_task_t *task)
389: {
390: rpc_cli_t *c = TASK_ARG(task);
391: rpc_srv_t *s = c->cli_parent;
392:
393: schedCancelby(TASK_ROOT(task), taskMAX, CRITERIA_ARG, TASK_ARG(task), NULL);
394:
395: /* close client socket */
396: if (TASK_VAL(task))
397: shutdown(c->cli_sock, SHUT_RDWR);
398: close(c->cli_sock);
399:
400: /* free buffer */
401: AIT_FREE_VAL(&c->cli_buf);
402:
403: io_arrayDel(s->srv_blob.clients, c->cli_id, 0);
404: if (c)
405: io_free(c);
406: return NULL;
407: }
408:
409: static void *
410: txBLOB(sched_task_t *task)
411: {
412: rpc_cli_t *c = TASK_ARG(task);
413: u_char *buf = AIT_GET_BUF(&c->cli_buf);
414: struct tagBLOBHdr *blob = (struct tagBLOBHdr *) buf;
415: int wlen = sizeof(struct tagBLOBHdr);
416:
417: /* calculate CRC */
418: blob->hdr_crc ^= blob->hdr_crc;
419: blob->hdr_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
420:
421: /* send reply */
422: wlen = send(TASK_FD(task), buf, wlen, MSG_NOSIGNAL);
423: if (wlen == -1 || wlen != sizeof(struct tagBLOBHdr)) {
424: /* close blob connection */
425: schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0);
426: }
427:
428: return NULL;
429: }
430:
431: static void *
432: rxBLOB(sched_task_t *task)
433: {
434: rpc_cli_t *c = TASK_ARG(task);
435: rpc_srv_t *s = c->cli_parent;
436: rpc_blob_t *b;
437: struct tagBLOBHdr blob;
438: int rlen;
439: u_short crc;
440:
441: memset(&blob, 0, sizeof blob);
442: rlen = recv(TASK_FD(task), &blob, sizeof blob, 0);
443: if (rlen < 1) {
444: /* close blob connection */
445: schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0);
446: return NULL;
447: }
448:
449: /* check BLOB packet */
450: if (rlen < sizeof(struct tagBLOBHdr)) {
451: rpc_SetErr(ERPCMISMATCH, "Short BLOB packet");
452:
453: schedReadSelf(task);
454: return NULL;
455: }
456:
457: /* check integrity of packet */
458: crc = ntohs(blob.hdr_crc);
459: blob.hdr_crc ^= blob.hdr_crc;
460: if (crc != crcFletcher16((u_short*) &blob, rlen / 2)) {
461: rpc_SetErr(ERPCMISMATCH, "Bad CRC BLOB packet");
462:
463: schedReadSelf(task);
464: return NULL;
465: }
466:
467: /* check RPC packet session info */
468: if ((crc = rpc_chkPktSession(&blob.hdr_session, &s->srv_session))) {
469: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
470: blob.hdr_cmd = error;
471: goto end;
472: }
473:
474: /* Go to proceed packet ... */
475: switch (blob.hdr_cmd) {
476: case get:
477: if (!(b = rpc_srv_getBLOB(s, ntohl(blob.hdr_var)))) {
478: rpc_SetErr(EINVAL, "Var=%x not found", ntohl(blob.hdr_var));
479: blob.hdr_cmd = no;
480: blob.hdr_ret = RPC_ERROR(-1);
481: break;
482: } else
483: blob.hdr_len = htonl(b->blob_len);
484:
485: if (rpc_srv_blobMap(s, b) != -1) {
486: /* deliver BLOB variable to client */
487: blob.hdr_ret = htonl(rpc_srv_sendBLOB(c, b));
488: rpc_srv_blobUnmap(b);
489: } else {
490: blob.hdr_cmd = error;
491: blob.hdr_ret = RPC_ERROR(-1);
492: }
493: break;
494: case set:
495: if ((b = rpc_srv_registerBLOB(s, ntohl(blob.hdr_len)))) {
496: /* set new BLOB variable for reply :) */
497: blob.hdr_var = htonl(b->blob_var);
498:
499: /* receive BLOB from client */
500: blob.hdr_ret = htonl(rpc_srv_recvBLOB(c, b));
501: rpc_srv_blobUnmap(b);
502: } else {
503: blob.hdr_cmd = error;
504: blob.hdr_ret = RPC_ERROR(-1);
505: }
506: break;
507: case unset:
508: if (rpc_srv_unregisterBLOB(s, ntohl(blob.hdr_var)) == -1) {
509: blob.hdr_cmd = error;
510: blob.hdr_ret = RPC_ERROR(-1);
511: }
512: break;
513: default:
514: rpc_SetErr(EPROCUNAVAIL, "Unsupported BLOB command %d", blob.hdr_cmd);
515: blob.hdr_cmd = error;
516: blob.hdr_ret = RPC_ERROR(-1);
517: }
518:
519: end:
520: memcpy(AIT_ADDR(&c->cli_buf), &blob, sizeof blob);
521: schedWrite(TASK_ROOT(task), txBLOB, TASK_ARG(task), TASK_FD(task), NULL, 0);
522: schedReadSelf(task);
523: return NULL;
524: }
525:
526: static void *
527: acceptBLOBClients(sched_task_t *task)
528: {
529: rpc_srv_t *srv = TASK_ARG(task);
530: rpc_cli_t *c = NULL;
531: register int i;
532: socklen_t salen = sizeof(io_sockaddr_t);
533: #ifdef TCP_NOPUSH
534: int n = 1;
535: #endif
536:
537: /* check free slots for connect */
538: for (i = 0; i < io_arraySize(srv->srv_blob.clients) &&
539: (c = io_array(srv->srv_blob.clients, i, rpc_cli_t*)); i++);
540: if (c) /* no more free slots! */
541: goto end;
542: c = io_malloc(sizeof(rpc_cli_t));
543: if (!c) {
544: LOGERR;
545: srv->srv_kill = srv->srv_blob.kill = 1;
546: return NULL;
547: } else {
548: memset(c, 0, sizeof(rpc_cli_t));
549: io_arraySet(srv->srv_blob.clients, i, c);
550: c->cli_id = i;
551: c->cli_parent = srv;
552: }
553:
554: /* alloc empty buffer */
555: AIT_SET_BUF2(&c->cli_buf, 0, srv->srv_netbuf);
556:
557: /* accept client */
558: c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen);
559: if (c->cli_sock == -1) {
560: LOGERR;
561: AIT_FREE_VAL(&c->cli_buf);
562: io_arrayDel(srv->srv_blob.clients, i, 42);
563: goto end;
564: } else {
565: #ifdef TCP_NOPUSH
566: setsockopt(c->cli_sock, IPPROTO_TCP, TCP_NOPUSH, &n, sizeof n);
567: #endif
568: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
569: }
570:
571: schedRead(TASK_ROOT(task), rxBLOB, c, c->cli_sock, NULL, 0);
572: end:
573: schedReadSelf(task);
574: return NULL;
575: }
576:
577: /* ------------------------------------------------------ */
578:
579: /*
580: * rpc_srv_initBLOBServer() - Init & create BLOB Server
581: *
582: * @srv = RPC server instance
583: * @Port = Port for bind server, if Port == 0 default port is selected
584: * @diskDir = Disk place for BLOB file objects
585: * return: -1 == error or 0 bind and created BLOB server instance
586: */
587: int
588: rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, u_short Port, const char *diskDir)
589: {
590: int n = 1;
591:
592: if (!srv || srv->srv_kill) {
593: rpc_SetErr(EINVAL, "Invalid parameters can`t init BLOB server");
594: return -1;
595: }
596:
597: memset(&srv->srv_blob, 0, sizeof srv->srv_blob);
598: if (access(diskDir, R_OK | W_OK) == -1) {
599: LOGERR;
600: return -1;
601: } else
602: AIT_SET_STR(&srv->srv_blob.dir, diskDir);
603:
604: /* init blob list */
605: TAILQ_INIT(&srv->srv_blob.blobs);
606:
607: srv->srv_blob.server.cli_parent = srv;
608:
609: memcpy(&srv->srv_blob.server.cli_sa, &srv->srv_server.cli_sa, sizeof(io_sockaddr_t));
610: switch (srv->srv_blob.server.cli_sa.sa.sa_family) {
611: case AF_INET:
612: srv->srv_blob.server.cli_sa.sin.sin_port =
613: htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin.sin_port) + 1);
614: break;
615: case AF_INET6:
616: srv->srv_blob.server.cli_sa.sin6.sin6_port =
617: htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin6.sin6_port) + 1);
618: break;
619: case AF_LOCAL:
620: strlcat(srv->srv_blob.server.cli_sa.sun.sun_path, ".blob",
621: sizeof srv->srv_blob.server.cli_sa.sun.sun_path);
622: break;
623: default:
624: AIT_FREE_VAL(&srv->srv_blob.dir);
625: return -1;
626: }
627:
628: /* create BLOB server socket */
629: srv->srv_blob.server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, SOCK_STREAM, 0);
630: if (srv->srv_blob.server.cli_sock == -1) {
631: LOGERR;
632: AIT_FREE_VAL(&srv->srv_blob.dir);
633: return -1;
634: }
635: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
636: LOGERR;
637: close(srv->srv_blob.server.cli_sock);
638: AIT_FREE_VAL(&srv->srv_blob.dir);
639: return -1;
640: }
641: n = srv->srv_netbuf;
642: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
643: LOGERR;
644: close(srv->srv_blob.server.cli_sock);
645: AIT_FREE_VAL(&srv->srv_blob.dir);
646: return -1;
647: }
648: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
649: LOGERR;
650: close(srv->srv_blob.server.cli_sock);
651: AIT_FREE_VAL(&srv->srv_blob.dir);
652: return -1;
653: }
654: if (bind(srv->srv_blob.server.cli_sock, &srv->srv_blob.server.cli_sa.sa,
655: srv->srv_blob.server.cli_sa.sa.sa_len) == -1) {
656: LOGERR;
657: close(srv->srv_blob.server.cli_sock);
658: AIT_FREE_VAL(&srv->srv_blob.dir);
659: return -1;
660: }
661:
662: /* allocate pool for concurent blob clients */
663: srv->srv_blob.clients = io_arrayInit(io_arraySize(srv->srv_clients));
664: if (!srv->srv_blob.clients) {
665: rpc_SetErr(io_GetErrno(), "%s", io_GetError());
666: close(srv->srv_blob.server.cli_sock);
667: AIT_FREE_VAL(&srv->srv_blob.dir);
668: return -1;
669: }
670:
671: /* init blob scheduler */
672: srv->srv_blob.root = schedBegin();
673: if (!srv->srv_blob.root) {
674: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
675: io_arrayDestroy(&srv->srv_blob.clients);
676: close(srv->srv_blob.server.cli_sock);
677: AIT_FREE_VAL(&srv->srv_blob.dir);
678: return -1;
679: }
680:
681: return 0;
682: }
683:
684: /*
685: * rpc_srv_endBLOBServer() - Destroy BLOB server, close all opened sockets and free resources
686: *
687: * @srv = RPC Server instance
688: * return: none
689: */
690: inline void
691: rpc_srv_endBLOBServer(rpc_srv_t * __restrict srv)
692: {
693: if (!srv)
694: return;
695:
696: srv->srv_blob.kill = 1;
697: }
698:
699: /*
700: * rpc_srv_loopBLOBServer() - Execute Main BLOB server loop and wait for clients requests
701: *
702: * @srv = RPC Server instance
703: * return: -1 error or 0 ok, infinite loop ...
704: */
705: int
706: rpc_srv_loopBLOBServer(rpc_srv_t * __restrict srv)
707: {
708: rpc_cli_t *c;
709: register int i;
710: rpc_blob_t *b, *tmp;
711: struct timespec ts = { RPC_SCHED_POLLING, 0 };
712:
713: if (!srv || srv->srv_kill) {
714: rpc_SetErr(EINVAL, "Invalid parameter can`t start BLOB server");
715: return -1;
716: }
717:
718: fcntl(srv->srv_blob.server.cli_sock, F_SETFL,
719: fcntl(srv->srv_blob.server.cli_sock, F_GETFL) | O_NONBLOCK);
720:
721: if (listen(srv->srv_blob.server.cli_sock, io_arraySize(srv->srv_blob.clients)) == -1) {
722: LOGERR;
723: return -1;
724: }
725:
726: if (!schedRead(srv->srv_blob.root, acceptBLOBClients, srv,
727: srv->srv_blob.server.cli_sock, NULL, 0)) {
728: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
729: return -1;
730: }
731:
732: schedPolling(srv->srv_blob.root, &ts, NULL);
733: /* main rpc loop */
734: schedRun(srv->srv_blob.root, &srv->srv_blob.kill);
735:
736: /* close all clients connections & server socket */
737: for (i = 0; i < io_arraySize(srv->srv_blob.clients); i++) {
738: c = io_array(srv->srv_blob.clients, i, rpc_cli_t*);
739: if (c) {
740: shutdown(c->cli_sock, SHUT_RDWR);
741: close(c->cli_sock);
742:
743: schedCancelby(srv->srv_blob.root, taskMAX, CRITERIA_ARG, c, NULL);
744: AIT_FREE_VAL(&c->cli_buf);
745: }
746: io_arrayDel(srv->srv_blob.clients, i, 42);
747: }
748: io_arrayDestroy(&srv->srv_blob.clients);
749:
750: close(srv->srv_blob.server.cli_sock);
751:
752: /* detach blobs */
753: TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) {
754: TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node);
755:
756: rpc_srv_blobFree(srv, b);
757: io_free(b);
758: }
759:
760: schedEnd(&srv->srv_blob.root);
761: AIT_FREE_VAL(&srv->srv_blob.dir);
762: return 0;
763: }
764:
765:
766: /*
767: * rpc_srv_initServer() - Init & create RPC Server
768: *
769: * @regProgID = ProgramID for authentication & recognition
770: * @regProcID = ProcessID for authentication & recognition
771: * @concurentClients = Concurent clients at same time to this server
772: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
773: * @csHost = Host name or address for bind server, if NULL any address
774: * @Port = Port for bind server, if Port == 0 default port is selected
775: * @proto = Protocol, if == 0 choose SOCK_STREAM
776: * return: NULL == error or !=NULL bind and created RPC server instance
777: */
778: rpc_srv_t *
779: rpc_srv_initServer(u_int regProgID, u_char regProcID, int concurentClients,
780: int netBuf, const char *csHost, u_short Port, int proto)
781: {
782: int n = 1;
783: rpc_srv_t *srv = NULL;
784: io_sockaddr_t sa = IO_SOCKADDR_INIT;
785:
786: if (!concurentClients || !regProgID || (proto < 0 || proto > SOCK_DGRAM)) {
787: rpc_SetErr(EINVAL, "Invalid parameters can`t init RPC server");
788: return NULL;
789: }
790: if (!proto)
791: proto = SOCK_STREAM;
792: if (!io_gethostbyname(csHost, Port, &sa))
793: return NULL;
794: if (!Port)
795: Port = RPC_DEFPORT;
796: if (netBuf < RPC_MIN_BUFSIZ)
797: netBuf = BUFSIZ;
798: else
799: netBuf = io_align(netBuf, 2); /* align netBuf length */
800:
801: #ifdef HAVE_SRANDOMDEV
802: srandomdev();
803: #else
804: time_t tim;
805:
806: srandom((time(&tim) ^ getpid()));
807: #endif
808:
809: srv = io_malloc(sizeof(rpc_srv_t));
810: if (!srv) {
811: LOGERR;
812: return NULL;
813: } else
814: memset(srv, 0, sizeof(rpc_srv_t));
815:
816: srv->srv_proto = proto;
817: srv->srv_netbuf = netBuf;
818: srv->srv_session.sess_version = RPC_VERSION;
819: srv->srv_session.sess_program = regProgID;
820: srv->srv_session.sess_process = regProcID;
821:
822: srv->srv_server.cli_parent = srv;
823: memcpy(&srv->srv_server.cli_sa, &sa, sizeof srv->srv_server.cli_sa);
824:
825: /* init functions */
826: pthread_mutex_init(&srv->srv_funcs.mtx, NULL);
827: SLIST_INIT(&srv->srv_funcs);
828: AVL_INIT(&srv->srv_funcs);
829:
830: /* init scheduler */
831: srv->srv_root = schedBegin();
832: if (!srv->srv_root) {
833: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
834: pthread_mutex_destroy(&srv->srv_funcs.mtx);
835: io_free(srv);
836: return NULL;
837: }
838:
839: /* init pool for clients */
840: srv->srv_clients = io_arrayInit(concurentClients);
841: if (!srv->srv_clients) {
842: rpc_SetErr(io_GetErrno(), "%s", io_GetError());
843: schedEnd(&srv->srv_root);
844: pthread_mutex_destroy(&srv->srv_funcs.mtx);
845: io_free(srv);
846: return NULL;
847: }
848:
849: /* create server socket */
850: srv->srv_server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, srv->srv_proto, 0);
851: if (srv->srv_server.cli_sock == -1) {
852: LOGERR;
853: io_arrayDestroy(&srv->srv_clients);
854: schedEnd(&srv->srv_root);
855: pthread_mutex_destroy(&srv->srv_funcs.mtx);
856: io_free(srv);
857: return NULL;
858: }
859: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
860: LOGERR;
861: goto err;
862: }
863: n = srv->srv_netbuf;
864: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
865: LOGERR;
866: goto err;
867: }
868: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
869: LOGERR;
870: goto err;
871: }
872: if (bind(srv->srv_server.cli_sock, &srv->srv_server.cli_sa.sa,
873: srv->srv_server.cli_sa.sa.sa_len) == -1) {
874: LOGERR;
875: goto err;
876: }
877:
878: rpc_register_srvPing(srv);
879:
880: return srv;
881: err: /* error condition */
882: close(srv->srv_server.cli_sock);
883: io_arrayDestroy(&srv->srv_clients);
884: schedEnd(&srv->srv_root);
885: pthread_mutex_destroy(&srv->srv_funcs.mtx);
886: io_free(srv);
887: return NULL;
888: }
889:
890: /*
891: * rpc_srv_endServer() - Destroy RPC server, close all opened sockets and free resources
892: *
893: * @psrv = RPC Server instance
894: * return: none
895: */
896: inline void
897: rpc_srv_endServer(rpc_srv_t ** __restrict psrv)
898: {
899: if (!psrv || !*psrv)
900: return;
901:
902: /* if send kill to blob server */
903: if (!(*psrv)->srv_blob.kill)
904: rpc_srv_endBLOBServer(*psrv);
905:
906: (*psrv)->srv_kill = 1;
907: sleep(RPC_SCHED_POLLING);
908:
909: pthread_mutex_destroy(&(*psrv)->srv_funcs.mtx);
910: io_free(*psrv);
911: *psrv = NULL;
912: }
913:
914: /*
915: * rpc_srv_loopServer() - Execute Main server loop and wait for clients requests
916: *
917: * @srv = RPC Server instance
918: * return: -1 error or 0 ok, infinite loop ...
919: */
920: int
921: rpc_srv_loopServer(rpc_srv_t * __restrict srv)
922: {
923: rpc_cli_t *c;
924: register int i;
925: rpc_func_t *f;
926: struct timespec ts = { RPC_SCHED_POLLING, 0 };
927:
928: if (!srv) {
929: rpc_SetErr(EINVAL, "Invalid parameter can`t start RPC server");
930: return -1;
931: }
932:
933: if (listen(srv->srv_server.cli_sock, io_arraySize(srv->srv_clients)) == -1) {
934: LOGERR;
935: return -1;
936: } else
937: fcntl(srv->srv_server.cli_sock, F_SETFL,
938: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
939:
940: if (!schedRead(srv->srv_root, cbProto[srv->srv_proto][CB_ACCEPTCLIENT], srv,
941: srv->srv_server.cli_sock, NULL, 0)) {
942: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
943: return -1;
944: }
945:
946: schedPolling(srv->srv_root, &ts, NULL);
947: /* main rpc loop */
948: schedRun(srv->srv_root, &srv->srv_kill);
949:
950: /* close all clients connections & server socket */
951: for (i = 0; i < io_arraySize(srv->srv_clients); i++) {
952: c = io_array(srv->srv_clients, i, rpc_cli_t*);
953: if (c) {
954: shutdown(c->cli_sock, SHUT_RDWR);
955: close(c->cli_sock);
956:
957: schedCancelby(srv->srv_root, taskMAX, CRITERIA_ARG, c, NULL);
958: io_freeVars(&RPC_RETVARS(c));
959: AIT_FREE_VAL(&c->cli_buf);
960: }
961: io_arrayDel(srv->srv_clients, i, 42);
962: }
963: io_arrayDestroy(&srv->srv_clients);
964:
965: close(srv->srv_server.cli_sock);
966:
967: /* detach exported calls */
968: RPC_FUNCS_LOCK(&srv->srv_funcs);
969: while ((f = SLIST_FIRST(&srv->srv_funcs))) {
970: SLIST_REMOVE_HEAD(&srv->srv_funcs, func_next);
971:
972: AIT_FREE_VAL(&f->func_name);
973: io_free(f);
974: }
975: srv->srv_funcs.avlh_root = NULL;
976: RPC_FUNCS_UNLOCK(&srv->srv_funcs);
977:
978: schedEnd(&srv->srv_root);
979: return 0;
980: }
981:
982:
983: /*
984: * rpc_srv_execCall() Execute registered call from RPC server
985: *
986: * @cli = RPC client
987: * @rpc = IN RPC call structure
988: * @funcname = Execute RPC function
989: * @args = IN RPC calling arguments from RPC client
990: * return: -1 error, !=-1 ok
991: */
992: int
993: rpc_srv_execCall(rpc_cli_t * __restrict cli, struct tagRPCCall * __restrict rpc,
994: ait_val_t funcname, array_t * __restrict args)
995: {
996: rpc_callback_t func;
997:
998: if (!cli || !rpc || !AIT_ADDR(&funcname)) {
999: rpc_SetErr(EINVAL, "Invalid parameter can`t exec function");
1000: return -1;
1001: }
1002:
1003: func = AIT_GET_LIKE(&funcname, rpc_callback_t);
1004: return func(cli, rpc, args);
1005: }
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