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 1.12.2.4 2012/11/16 13:30:05 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 inline int
70: _check4freeslot(rpc_srv_t * __restrict srv, io_sockaddr_t * __restrict sa)
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: /* check for duplicates */
79: if (sa && !io_addrcmp(&c->cli_sa, sa, 42))
80: break;
81: if (i >= io_arraySize(srv->srv_clients))
82: return -1; /* no more free slots! */
83:
84: return i;
85: }
86:
87: static rpc_cli_t *
88: _allocClient(rpc_srv_t * __restrict srv, io_sockaddr_t * __restrict sa)
89: {
90: rpc_cli_t *c = NULL;
91: int n;
92:
93: n = _check4freeslot(srv, sa);
94: if (n == -1)
95: return NULL;
96: else
97: c = io_array(srv->srv_clients, n, rpc_cli_t*);
98:
99: if (!c) {
100: c = io_malloc(sizeof(rpc_cli_t));
101: if (!c) {
102: LOGERR;
103: srv->srv_kill = 1;
104: return NULL;
105: } else {
106: memset(c, 0, sizeof(rpc_cli_t));
107: io_arraySet(srv->srv_clients, n, c);
108: c->cli_id = n;
109: c->cli_parent = srv;
110: }
111:
112: /* alloc empty buffer */
113: AIT_SET_BUF2(&c->cli_buf, 0, srv->srv_netbuf);
114: }
115:
116: return c;
117: }
118:
119:
120: static void *
121: connectClients(sched_task_t *task)
122: {
123: rpc_srv_t *srv = TASK_ARG(task);
124: rpc_cli_t *c = NULL;
125: socklen_t salen = sizeof(io_sockaddr_t);
126: int len, rlen;
127: u_short crc;
128: u_char buf[USHRT_MAX + 1];
129: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
130: io_sockaddr_t sa;
131:
132: #if 0
133: c = _allocClient(srv);
134: if (!c) {
135: schedReadSelf(task);
136: return NULL;
137: } else
138: buf = AIT_GET_BUF(&c->cli_buf);
139: #endif
140:
141: /* receive connect packet */
142: rlen = recvfrom(TASK_FD(task), buf, sizeof buf, 0, &sa.sa, &salen);
143: if (rlen < 1)
144: goto end;
145:
146: /* check RPC packet */
147: if (rlen < sizeof(struct tagRPCCall)) {
148: rpc_SetErr(ERPCMISMATCH, "Short RPC packet");
149: goto end;
150: } else {
151: len = ntohs(rpc->call_len);
152: rlen -= len;
153: }
154: /* check RPC packet lengths */
155: if (rlen < 0 || len < sizeof(struct tagRPCCall)) {
156: rpc_SetErr(ERPCMISMATCH, "Broken RPC packet length");
157: goto end;
158: }
159:
160: /* check integrity of packet */
161: crc = ntohs(rpc->call_crc);
162: rpc->call_crc ^= rpc->call_crc;
163: if (crc != crcFletcher16((u_short*) rpc, len / 2)) {
164: rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet");
165: goto end;
166: }
167:
168: /* check RPC packet session info */
169: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session)) {
170: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
171: goto end;
172: }
173:
174: /* RPC packet is OK */
175:
176: c = _allocClient(srv, &sa);
177: if (!c)
178: goto end;
179:
180: if (0) {
181: schedRead(TASK_ROOT(task), cbProto[srv->srv_proto][CB_RXPACKET], c,
182: c->cli_sock, NULL, 0);
183: schedReadSelf(task);
184: return NULL;
185: }
186:
187: end:
188: #if 0
189: /* close connection & dont send disconnect */
190: schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
191: c, 42, NULL, 42);
192: #endif
193: schedReadSelf(task);
194: return NULL;
195: }
196:
197: static void *
198: disconnectClient(sched_task_t *task)
199: {
200: rpc_cli_t *c = TASK_ARG(task);
201: rpc_srv_t *s = c->cli_parent;
202:
203: schedCancelby(TASK_ROOT(task), taskMAX, CRITERIA_ARG, TASK_ARG(task), NULL);
204:
205: if (!TASK_DATLEN(task)) {
206: /* TODO: send disconnect packet */
207: }
208:
209: /* free buffer */
210: AIT_FREE_VAL(&c->cli_buf);
211:
212: io_arrayDel(s->srv_clients, c->cli_id, 0);
213: if (c)
214: io_free(c);
215: return NULL;
216: }
217:
218: static void *
219: closeClient(sched_task_t *task)
220: {
221: rpc_cli_t *c = TASK_ARG(task);
222: rpc_srv_t *s = c->cli_parent;
223:
224: schedCancelby(TASK_ROOT(task), taskMAX, CRITERIA_ARG, TASK_ARG(task), NULL);
225:
226: /* close client socket */
227: if (TASK_VAL(task))
228: shutdown(c->cli_sock, SHUT_RDWR);
229: close(c->cli_sock);
230:
231: /* free buffer */
232: AIT_FREE_VAL(&c->cli_buf);
233:
234: io_arrayDel(s->srv_clients, c->cli_id, 0);
235: if (c)
236: io_free(c);
237: return NULL;
238: }
239:
240: static void *
241: txPacket(sched_task_t *task)
242: {
243: rpc_cli_t *c = TASK_ARG(task);
244: rpc_srv_t *s = c->cli_parent;
245: rpc_func_t *f = NULL;
246: u_char buf[USHRT_MAX] = { 0 };
247: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
248: int ret, wlen = sizeof(struct tagRPCCall);
249:
250: /* copy RPC header */
251: memcpy(buf, TASK_DATA(task), wlen);
252:
253: if (rpc->call_argc) {
254: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
255: if (!f) {
256: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
257: rpc->call_argc ^= rpc->call_argc;
258: rpc->call_rep.ret = RPC_ERROR(-1);
259: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
260: } else {
261: rpc->call_argc = htons(io_arraySize(RPC_RETVARS(c)));
262: /* Go Encapsulate variables */
263: ret = io_vars2buffer(buf + wlen, sizeof buf - wlen, RPC_RETVARS(c));
264: /* Free return values */
265: io_freeVars(&c->cli_vars);
266: if (ret == -1) {
267: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
268: rpc->call_argc ^= rpc->call_argc;
269: rpc->call_rep.ret = RPC_ERROR(-1);
270: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
271: } else
272: wlen += ret;
273: }
274: }
275:
276: rpc->call_len = htons(wlen);
277:
278: /* calculate CRC */
279: rpc->call_crc ^= rpc->call_crc;
280: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
281:
282: /* send reply */
283: ret = send(TASK_FD(task), buf, wlen, MSG_NOSIGNAL);
284: if (ret == -1 || ret != wlen) {
285: /* close connection */
286: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
287: c, 42, NULL, 0);
288: }
289:
290: return NULL;
291: }
292:
293: static void *
294: execCall(sched_task_t *task)
295: {
296: rpc_cli_t *c = TASK_ARG(task);
297: rpc_srv_t *s = c->cli_parent;
298: rpc_func_t *f = NULL;
299: array_t *arr = NULL;
300: u_char *buf = AIT_GET_BUF(&c->cli_buf) + TASK_VAL(task);
301: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
302: int argc = ntohs(rpc->call_argc);
303:
304: /* Go decapsulate variables ... */
305: if (argc) {
306: arr = io_buffer2vars(buf + sizeof(struct tagRPCCall),
307: AIT_LEN(&c->cli_buf) - TASK_VAL(task) - sizeof(struct tagRPCCall),
308: argc, 42);
309: if (!arr) {
310: rpc_SetErr(ERPCMISMATCH, "#%d - %s", io_GetErrno(), io_GetError());
311: rpc->call_argc ^= rpc->call_argc;
312: rpc->call_rep.ret = RPC_ERROR(-1);
313: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
314: return NULL;
315: }
316: } else
317: arr = NULL;
318:
319: if (!(f = rpc_srv_getCall(s, ntohs(rpc->call_tag)))) {
320: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
321: rpc->call_argc ^= rpc->call_argc;
322: rpc->call_rep.ret = RPC_ERROR(-1);
323: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
324: } else {
325: /* if client doesn't want reply */
326: argc = RPC_CHK_NOREPLY(rpc);
327: rpc->call_rep.ret = RPC_ERROR(rpc_srv_execCall(c, rpc, f->func_name, arr));
328: if (rpc->call_rep.ret == htonl(-1)) {
329: rpc->call_rep.eno = RPC_ERROR(errno);
330: rpc->call_argc ^= rpc->call_argc;
331: } else {
332: rpc->call_rep.eno ^= rpc->call_rep.eno;
333: if (argc) {
334: /* without reply */
335: io_freeVars(&c->cli_vars);
336: rpc->call_argc ^= rpc->call_argc;
337: } else {
338: /* reply */
339: rpc->call_argc = htons(io_arraySize(RPC_RETVARS(c)));
340: }
341: }
342: }
343:
344: io_arrayDestroy(&arr);
345: return NULL;
346: }
347:
348: static void *
349: rxPacket(sched_task_t *task)
350: {
351: rpc_cli_t *c = TASK_ARG(task);
352: rpc_srv_t *s = c->cli_parent;
353: int len, rlen, noreply;
354: u_short crc, off = TASK_DATLEN(task);
355: u_char *buf = AIT_GET_BUF(&c->cli_buf);
356: struct tagRPCCall *rpc;
357:
358: if (!off)
359: memset(buf, 0, AIT_LEN(&c->cli_buf));
360: rlen = recv(TASK_FD(task), buf + off, AIT_LEN(&c->cli_buf) - off, 0);
361: if (rlen < 1) {
362: /* close connection */
363: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
364: c, 42, NULL, 0);
365: return NULL;
366: } else {
367: rlen += off; /* add reminded bytes from previous rxPacket, if exists! */
368: off = 0; /* process buffer from start offset == 0 */
369: }
370:
371: do {
372: /* check RPC packet */
373: if (rlen < sizeof(struct tagRPCCall)) {
374: rpc_SetErr(ERPCMISMATCH, "Short RPC packet");
375:
376: /* reminder received previous bytes ;) */
377: schedRead(TASK_ROOT(task), TASK_FUNC(task), TASK_ARG(task),
378: TASK_FD(task), TASK_DATA(task), rlen);
379: return NULL;
380: } else
381: rpc = (struct tagRPCCall*) (buf + off);
382:
383: len = ntohs(rpc->call_len);
384: rlen -= len;
385:
386: /* check RPC packet lengths */
387: if (rlen < 0 || len < sizeof(struct tagRPCCall)) {
388: rpc_SetErr(ERPCMISMATCH, "Broken RPC packet length");
389: /* skip entire packet */
390: break;
391: }
392:
393: /* check integrity of packet */
394: crc = ntohs(rpc->call_crc);
395: rpc->call_crc ^= rpc->call_crc;
396: if (crc != crcFletcher16((u_short*) rpc, len / 2)) {
397: rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet");
398:
399: off += len;
400: /* try next packet remaining into buffer */
401: continue;
402: }
403:
404: noreply = RPC_CHK_NOREPLY(rpc);
405:
406: /* check RPC packet session info */
407: if (rpc_chkPktSession(&rpc->call_session, &s->srv_session)) {
408: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
409: rpc->call_argc ^= rpc->call_argc;
410: rpc->call_rep.ret = RPC_ERROR(-1);
411: rpc->call_rep.eno = RPC_ERROR(errno);
412: } else {
413: /* execute RPC call */
414: schedEvent(TASK_ROOT(task), execCall, TASK_ARG(task), off, NULL, 0);
415: }
416:
417: /* send RPC reply */
418: if (!noreply)
419: schedWrite(TASK_ROOT(task), cbProto[s->srv_proto][CB_TXPACKET],
420: TASK_ARG(task), TASK_FD(task), rpc, len);
421:
422: off += len;
423: } while (rlen > 0);
424:
425: /* lets get next packet */
426: schedRead(TASK_ROOT(task), TASK_FUNC(task), TASK_ARG(task), TASK_FD(task), TASK_DATA(task), 0);
427: return NULL;
428: }
429:
430: static void *
431: acceptClients(sched_task_t *task)
432: {
433: rpc_srv_t *srv = TASK_ARG(task);
434: rpc_cli_t *c = NULL;
435: socklen_t salen = sizeof(io_sockaddr_t);
436:
437: c = _allocClient(srv, NULL);
438: if (!c)
439: goto end;
440:
441: /* accept client */
442: c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen);
443: if (c->cli_sock == -1) {
444: LOGERR;
445: AIT_FREE_VAL(&c->cli_buf);
446: io_arrayDel(srv->srv_clients, c->cli_id, 42);
447: goto end;
448: } else
449: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
450:
451: schedRead(TASK_ROOT(task), cbProto[srv->srv_proto][CB_RXPACKET], c,
452: c->cli_sock, NULL, 0);
453: end:
454: schedReadSelf(task);
455: return NULL;
456: }
457:
458: /* ------------------------------------------------------ */
459:
460: static void *
461: closeBLOBClient(sched_task_t *task)
462: {
463: rpc_cli_t *c = TASK_ARG(task);
464: rpc_srv_t *s = c->cli_parent;
465:
466: schedCancelby(TASK_ROOT(task), taskMAX, CRITERIA_ARG, TASK_ARG(task), NULL);
467:
468: /* close client socket */
469: if (TASK_VAL(task))
470: shutdown(c->cli_sock, SHUT_RDWR);
471: close(c->cli_sock);
472:
473: /* free buffer */
474: AIT_FREE_VAL(&c->cli_buf);
475:
476: io_arrayDel(s->srv_blob.clients, c->cli_id, 0);
477: if (c)
478: io_free(c);
479: return NULL;
480: }
481:
482: static void *
483: txBLOB(sched_task_t *task)
484: {
485: rpc_cli_t *c = TASK_ARG(task);
486: u_char *buf = AIT_GET_BUF(&c->cli_buf);
487: struct tagBLOBHdr *blob = (struct tagBLOBHdr *) buf;
488: int wlen = sizeof(struct tagBLOBHdr);
489:
490: /* calculate CRC */
491: blob->hdr_crc ^= blob->hdr_crc;
492: blob->hdr_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
493:
494: /* send reply */
495: wlen = send(TASK_FD(task), buf, wlen, MSG_NOSIGNAL);
496: if (wlen == -1 || wlen != sizeof(struct tagBLOBHdr)) {
497: /* close blob connection */
498: schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0);
499: }
500:
501: return NULL;
502: }
503:
504: static void *
505: rxBLOB(sched_task_t *task)
506: {
507: rpc_cli_t *c = TASK_ARG(task);
508: rpc_srv_t *s = c->cli_parent;
509: rpc_blob_t *b;
510: struct tagBLOBHdr blob;
511: int rlen;
512: u_short crc;
513:
514: memset(&blob, 0, sizeof blob);
515: rlen = recv(TASK_FD(task), &blob, sizeof blob, 0);
516: if (rlen < 1) {
517: /* close blob connection */
518: schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0);
519: return NULL;
520: }
521:
522: /* check BLOB packet */
523: if (rlen < sizeof(struct tagBLOBHdr)) {
524: rpc_SetErr(ERPCMISMATCH, "Short BLOB packet");
525:
526: schedReadSelf(task);
527: return NULL;
528: }
529:
530: /* check integrity of packet */
531: crc = ntohs(blob.hdr_crc);
532: blob.hdr_crc ^= blob.hdr_crc;
533: if (crc != crcFletcher16((u_short*) &blob, rlen / 2)) {
534: rpc_SetErr(ERPCMISMATCH, "Bad CRC BLOB packet");
535:
536: schedReadSelf(task);
537: return NULL;
538: }
539:
540: /* check RPC packet session info */
541: if ((crc = rpc_chkPktSession(&blob.hdr_session, &s->srv_session))) {
542: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
543: blob.hdr_cmd = error;
544: goto end;
545: }
546:
547: /* Go to proceed packet ... */
548: switch (blob.hdr_cmd) {
549: case get:
550: if (!(b = rpc_srv_getBLOB(s, ntohl(blob.hdr_var)))) {
551: rpc_SetErr(EINVAL, "Var=%x not found", ntohl(blob.hdr_var));
552: blob.hdr_cmd = no;
553: blob.hdr_ret = RPC_ERROR(-1);
554: break;
555: } else
556: blob.hdr_len = htonl(b->blob_len);
557:
558: if (rpc_srv_blobMap(s, b) != -1) {
559: /* deliver BLOB variable to client */
560: blob.hdr_ret = htonl(rpc_srv_sendBLOB(c, b));
561: rpc_srv_blobUnmap(b);
562: } else {
563: blob.hdr_cmd = error;
564: blob.hdr_ret = RPC_ERROR(-1);
565: }
566: break;
567: case set:
568: if ((b = rpc_srv_registerBLOB(s, ntohl(blob.hdr_len)))) {
569: /* set new BLOB variable for reply :) */
570: blob.hdr_var = htonl(b->blob_var);
571:
572: /* receive BLOB from client */
573: blob.hdr_ret = htonl(rpc_srv_recvBLOB(c, b));
574: rpc_srv_blobUnmap(b);
575: } else {
576: blob.hdr_cmd = error;
577: blob.hdr_ret = RPC_ERROR(-1);
578: }
579: break;
580: case unset:
581: if (rpc_srv_unregisterBLOB(s, ntohl(blob.hdr_var)) == -1) {
582: blob.hdr_cmd = error;
583: blob.hdr_ret = RPC_ERROR(-1);
584: }
585: break;
586: default:
587: rpc_SetErr(EPROCUNAVAIL, "Unsupported BLOB command %d", blob.hdr_cmd);
588: blob.hdr_cmd = error;
589: blob.hdr_ret = RPC_ERROR(-1);
590: }
591:
592: end:
593: memcpy(AIT_ADDR(&c->cli_buf), &blob, sizeof blob);
594: schedWrite(TASK_ROOT(task), txBLOB, TASK_ARG(task), TASK_FD(task), NULL, 0);
595: schedReadSelf(task);
596: return NULL;
597: }
598:
599: static void *
600: acceptBLOBClients(sched_task_t *task)
601: {
602: rpc_srv_t *srv = TASK_ARG(task);
603: rpc_cli_t *c = NULL;
604: register int i;
605: socklen_t salen = sizeof(io_sockaddr_t);
606: #ifdef TCP_NOPUSH
607: int n = 1;
608: #endif
609:
610: /* check free slots for connect */
611: for (i = 0; i < io_arraySize(srv->srv_blob.clients) &&
612: (c = io_array(srv->srv_blob.clients, i, rpc_cli_t*)); i++);
613: if (c) /* no more free slots! */
614: goto end;
615: c = io_malloc(sizeof(rpc_cli_t));
616: if (!c) {
617: LOGERR;
618: srv->srv_kill = srv->srv_blob.kill = 1;
619: return NULL;
620: } else {
621: memset(c, 0, sizeof(rpc_cli_t));
622: io_arraySet(srv->srv_blob.clients, i, c);
623: c->cli_id = i;
624: c->cli_parent = srv;
625: }
626:
627: /* alloc empty buffer */
628: AIT_SET_BUF2(&c->cli_buf, 0, srv->srv_netbuf);
629:
630: /* accept client */
631: c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen);
632: if (c->cli_sock == -1) {
633: LOGERR;
634: AIT_FREE_VAL(&c->cli_buf);
635: io_arrayDel(srv->srv_blob.clients, i, 42);
636: goto end;
637: } else {
638: #ifdef TCP_NOPUSH
639: setsockopt(c->cli_sock, IPPROTO_TCP, TCP_NOPUSH, &n, sizeof n);
640: #endif
641: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
642: }
643:
644: schedRead(TASK_ROOT(task), rxBLOB, c, c->cli_sock, NULL, 0);
645: end:
646: schedReadSelf(task);
647: return NULL;
648: }
649:
650: /* ------------------------------------------------------ */
651:
652: /*
653: * rpc_srv_initBLOBServer() - Init & create BLOB Server
654: *
655: * @srv = RPC server instance
656: * @Port = Port for bind server, if Port == 0 default port is selected
657: * @diskDir = Disk place for BLOB file objects
658: * return: -1 == error or 0 bind and created BLOB server instance
659: */
660: int
661: rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, u_short Port, const char *diskDir)
662: {
663: int n = 1;
664:
665: if (!srv || srv->srv_kill) {
666: rpc_SetErr(EINVAL, "Invalid parameters can`t init BLOB server");
667: return -1;
668: }
669:
670: memset(&srv->srv_blob, 0, sizeof srv->srv_blob);
671: if (access(diskDir, R_OK | W_OK) == -1) {
672: LOGERR;
673: return -1;
674: } else
675: AIT_SET_STR(&srv->srv_blob.dir, diskDir);
676:
677: /* init blob list */
678: TAILQ_INIT(&srv->srv_blob.blobs);
679:
680: srv->srv_blob.server.cli_parent = srv;
681:
682: memcpy(&srv->srv_blob.server.cli_sa, &srv->srv_server.cli_sa, sizeof(io_sockaddr_t));
683: switch (srv->srv_blob.server.cli_sa.sa.sa_family) {
684: case AF_INET:
685: srv->srv_blob.server.cli_sa.sin.sin_port =
686: htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin.sin_port) + 1);
687: break;
688: case AF_INET6:
689: srv->srv_blob.server.cli_sa.sin6.sin6_port =
690: htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin6.sin6_port) + 1);
691: break;
692: case AF_LOCAL:
693: strlcat(srv->srv_blob.server.cli_sa.sun.sun_path, ".blob",
694: sizeof srv->srv_blob.server.cli_sa.sun.sun_path);
695: break;
696: default:
697: AIT_FREE_VAL(&srv->srv_blob.dir);
698: return -1;
699: }
700:
701: /* create BLOB server socket */
702: srv->srv_blob.server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, SOCK_STREAM, 0);
703: if (srv->srv_blob.server.cli_sock == -1) {
704: LOGERR;
705: AIT_FREE_VAL(&srv->srv_blob.dir);
706: return -1;
707: }
708: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
709: LOGERR;
710: close(srv->srv_blob.server.cli_sock);
711: AIT_FREE_VAL(&srv->srv_blob.dir);
712: return -1;
713: }
714: n = srv->srv_netbuf;
715: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
716: LOGERR;
717: close(srv->srv_blob.server.cli_sock);
718: AIT_FREE_VAL(&srv->srv_blob.dir);
719: return -1;
720: }
721: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
722: LOGERR;
723: close(srv->srv_blob.server.cli_sock);
724: AIT_FREE_VAL(&srv->srv_blob.dir);
725: return -1;
726: }
727: if (bind(srv->srv_blob.server.cli_sock, &srv->srv_blob.server.cli_sa.sa,
728: srv->srv_blob.server.cli_sa.sa.sa_len) == -1) {
729: LOGERR;
730: close(srv->srv_blob.server.cli_sock);
731: AIT_FREE_VAL(&srv->srv_blob.dir);
732: return -1;
733: } else
734: fcntl(srv->srv_blob.server.cli_sock, F_SETFL,
735: fcntl(srv->srv_blob.server.cli_sock, F_GETFL) | O_NONBLOCK);
736:
737:
738: /* allocate pool for concurent blob clients */
739: srv->srv_blob.clients = io_arrayInit(io_arraySize(srv->srv_clients));
740: if (!srv->srv_blob.clients) {
741: rpc_SetErr(io_GetErrno(), "%s", io_GetError());
742: close(srv->srv_blob.server.cli_sock);
743: AIT_FREE_VAL(&srv->srv_blob.dir);
744: return -1;
745: }
746:
747: /* init blob scheduler */
748: srv->srv_blob.root = schedBegin();
749: if (!srv->srv_blob.root) {
750: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
751: io_arrayDestroy(&srv->srv_blob.clients);
752: close(srv->srv_blob.server.cli_sock);
753: AIT_FREE_VAL(&srv->srv_blob.dir);
754: return -1;
755: }
756:
757: return 0;
758: }
759:
760: /*
761: * rpc_srv_endBLOBServer() - Destroy BLOB server, close all opened sockets and free resources
762: *
763: * @srv = RPC Server instance
764: * return: none
765: */
766: inline void
767: rpc_srv_endBLOBServer(rpc_srv_t * __restrict srv)
768: {
769: if (!srv)
770: return;
771:
772: srv->srv_blob.kill = 1;
773: }
774:
775: /*
776: * rpc_srv_loopBLOBServer() - Execute Main BLOB server loop and wait for clients requests
777: *
778: * @srv = RPC Server instance
779: * return: -1 error or 0 ok, infinite loop ...
780: */
781: int
782: rpc_srv_loopBLOBServer(rpc_srv_t * __restrict srv)
783: {
784: rpc_cli_t *c;
785: register int i;
786: rpc_blob_t *b, *tmp;
787: struct timespec ts = { RPC_SCHED_POLLING, 0 };
788:
789: if (!srv || srv->srv_kill) {
790: rpc_SetErr(EINVAL, "Invalid parameter can`t start BLOB server");
791: return -1;
792: }
793:
794: if (listen(srv->srv_blob.server.cli_sock, io_arraySize(srv->srv_blob.clients)) == -1) {
795: LOGERR;
796: return -1;
797: }
798:
799: if (!schedRead(srv->srv_blob.root, acceptBLOBClients, srv,
800: srv->srv_blob.server.cli_sock, NULL, 0)) {
801: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
802: return -1;
803: }
804:
805: schedPolling(srv->srv_blob.root, &ts, NULL);
806: /* main rpc loop */
807: schedRun(srv->srv_blob.root, &srv->srv_blob.kill);
808:
809: /* close all clients connections & server socket */
810: for (i = 0; i < io_arraySize(srv->srv_blob.clients); i++) {
811: c = io_array(srv->srv_blob.clients, i, rpc_cli_t*);
812: if (c) {
813: shutdown(c->cli_sock, SHUT_RDWR);
814: close(c->cli_sock);
815:
816: schedCancelby(srv->srv_blob.root, taskMAX, CRITERIA_ARG, c, NULL);
817: AIT_FREE_VAL(&c->cli_buf);
818: }
819: io_arrayDel(srv->srv_blob.clients, i, 42);
820: }
821: io_arrayDestroy(&srv->srv_blob.clients);
822:
823: close(srv->srv_blob.server.cli_sock);
824:
825: /* detach blobs */
826: TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) {
827: TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node);
828:
829: rpc_srv_blobFree(srv, b);
830: io_free(b);
831: }
832:
833: schedEnd(&srv->srv_blob.root);
834: AIT_FREE_VAL(&srv->srv_blob.dir);
835: return 0;
836: }
837:
838:
839: /*
840: * rpc_srv_initServer() - Init & create RPC Server
841: *
842: * @regProgID = ProgramID for authentication & recognition
843: * @regProcID = ProcessID for authentication & recognition
844: * @concurentClients = Concurent clients at same time to this server
845: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
846: * @csHost = Host name or address for bind server, if NULL any address
847: * @Port = Port for bind server, if Port == 0 default port is selected
848: * @proto = Protocol, if == 0 choose SOCK_STREAM
849: * return: NULL == error or !=NULL bind and created RPC server instance
850: */
851: rpc_srv_t *
852: rpc_srv_initServer(u_int regProgID, u_char regProcID, int concurentClients,
853: int netBuf, const char *csHost, u_short Port, int proto)
854: {
855: int n = 1;
856: rpc_srv_t *srv = NULL;
857: io_sockaddr_t sa = IO_SOCKADDR_INIT;
858:
859: if (!concurentClients || !regProgID || (proto < 0 || proto > SOCK_DGRAM)) {
860: rpc_SetErr(EINVAL, "Invalid parameters can`t init RPC server");
861: return NULL;
862: }
863: if (!proto)
864: proto = SOCK_STREAM;
865: if (!io_gethostbyname(csHost, Port, &sa))
866: return NULL;
867: if (!Port)
868: Port = RPC_DEFPORT;
869: if (netBuf < RPC_MIN_BUFSIZ)
870: netBuf = BUFSIZ;
871: else
872: netBuf = io_align(netBuf, 2); /* align netBuf length */
873:
874: #ifdef HAVE_SRANDOMDEV
875: srandomdev();
876: #else
877: time_t tim;
878:
879: srandom((time(&tim) ^ getpid()));
880: #endif
881:
882: srv = io_malloc(sizeof(rpc_srv_t));
883: if (!srv) {
884: LOGERR;
885: return NULL;
886: } else
887: memset(srv, 0, sizeof(rpc_srv_t));
888:
889: srv->srv_proto = proto;
890: srv->srv_netbuf = netBuf;
891: srv->srv_session.sess_version = RPC_VERSION;
892: srv->srv_session.sess_program = regProgID;
893: srv->srv_session.sess_process = regProcID;
894:
895: srv->srv_server.cli_parent = srv;
896: memcpy(&srv->srv_server.cli_sa, &sa, sizeof srv->srv_server.cli_sa);
897:
898: /* init functions */
899: pthread_mutex_init(&srv->srv_funcs.mtx, NULL);
900: SLIST_INIT(&srv->srv_funcs);
901: AVL_INIT(&srv->srv_funcs);
902:
903: /* init scheduler */
904: srv->srv_root = schedBegin();
905: if (!srv->srv_root) {
906: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
907: pthread_mutex_destroy(&srv->srv_funcs.mtx);
908: io_free(srv);
909: return NULL;
910: }
911:
912: /* init pool for clients */
913: srv->srv_clients = io_arrayInit(concurentClients);
914: if (!srv->srv_clients) {
915: rpc_SetErr(io_GetErrno(), "%s", io_GetError());
916: schedEnd(&srv->srv_root);
917: pthread_mutex_destroy(&srv->srv_funcs.mtx);
918: io_free(srv);
919: return NULL;
920: }
921:
922: /* create server socket */
923: srv->srv_server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, srv->srv_proto, 0);
924: if (srv->srv_server.cli_sock == -1) {
925: LOGERR;
926: io_arrayDestroy(&srv->srv_clients);
927: schedEnd(&srv->srv_root);
928: pthread_mutex_destroy(&srv->srv_funcs.mtx);
929: io_free(srv);
930: return NULL;
931: }
932: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
933: LOGERR;
934: goto err;
935: }
936: n = srv->srv_netbuf;
937: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
938: LOGERR;
939: goto err;
940: }
941: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
942: LOGERR;
943: goto err;
944: }
945: if (bind(srv->srv_server.cli_sock, &srv->srv_server.cli_sa.sa,
946: srv->srv_server.cli_sa.sa.sa_len) == -1) {
947: LOGERR;
948: goto err;
949: } else
950: fcntl(srv->srv_server.cli_sock, F_SETFL,
951: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
952:
953: rpc_register_srvPing(srv);
954:
955: return srv;
956: err: /* error condition */
957: close(srv->srv_server.cli_sock);
958: io_arrayDestroy(&srv->srv_clients);
959: schedEnd(&srv->srv_root);
960: pthread_mutex_destroy(&srv->srv_funcs.mtx);
961: io_free(srv);
962: return NULL;
963: }
964:
965: /*
966: * rpc_srv_endServer() - Destroy RPC server, close all opened sockets and free resources
967: *
968: * @psrv = RPC Server instance
969: * return: none
970: */
971: inline void
972: rpc_srv_endServer(rpc_srv_t ** __restrict psrv)
973: {
974: if (!psrv || !*psrv)
975: return;
976:
977: /* if send kill to blob server */
978: if (!(*psrv)->srv_blob.kill)
979: rpc_srv_endBLOBServer(*psrv);
980:
981: (*psrv)->srv_kill = 1;
982: sleep(RPC_SCHED_POLLING);
983:
984: pthread_mutex_destroy(&(*psrv)->srv_funcs.mtx);
985: io_free(*psrv);
986: *psrv = NULL;
987: }
988:
989: /*
990: * rpc_srv_loopServer() - Execute Main server loop and wait for clients requests
991: *
992: * @srv = RPC Server instance
993: * return: -1 error or 0 ok, infinite loop ...
994: */
995: int
996: rpc_srv_loopServer(rpc_srv_t * __restrict srv)
997: {
998: rpc_cli_t *c;
999: register int i;
1000: rpc_func_t *f;
1001: struct timespec ts = { RPC_SCHED_POLLING, 0 };
1002:
1003: if (!srv) {
1004: rpc_SetErr(EINVAL, "Invalid parameter can`t start RPC server");
1005: return -1;
1006: }
1007:
1008: if (listen(srv->srv_server.cli_sock, io_arraySize(srv->srv_clients)) == -1) {
1009: LOGERR;
1010: return -1;
1011: }
1012:
1013: if (!schedRead(srv->srv_root, cbProto[srv->srv_proto][CB_ACCEPTCLIENT], srv,
1014: srv->srv_server.cli_sock, NULL, 0)) {
1015: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1016: return -1;
1017: }
1018:
1019: schedPolling(srv->srv_root, &ts, NULL);
1020: /* main rpc loop */
1021: schedRun(srv->srv_root, &srv->srv_kill);
1022:
1023: /* close all clients connections & server socket */
1024: for (i = 0; i < io_arraySize(srv->srv_clients); i++) {
1025: c = io_array(srv->srv_clients, i, rpc_cli_t*);
1026: if (c) {
1027: shutdown(c->cli_sock, SHUT_RDWR);
1028: close(c->cli_sock);
1029:
1030: schedCancelby(srv->srv_root, taskMAX, CRITERIA_ARG, c, NULL);
1031: io_freeVars(&RPC_RETVARS(c));
1032: AIT_FREE_VAL(&c->cli_buf);
1033: }
1034: io_arrayDel(srv->srv_clients, i, 42);
1035: }
1036: io_arrayDestroy(&srv->srv_clients);
1037:
1038: close(srv->srv_server.cli_sock);
1039:
1040: /* detach exported calls */
1041: RPC_FUNCS_LOCK(&srv->srv_funcs);
1042: while ((f = SLIST_FIRST(&srv->srv_funcs))) {
1043: SLIST_REMOVE_HEAD(&srv->srv_funcs, func_next);
1044:
1045: AIT_FREE_VAL(&f->func_name);
1046: io_free(f);
1047: }
1048: srv->srv_funcs.avlh_root = NULL;
1049: RPC_FUNCS_UNLOCK(&srv->srv_funcs);
1050:
1051: schedEnd(&srv->srv_root);
1052: return 0;
1053: }
1054:
1055:
1056: /*
1057: * rpc_srv_execCall() Execute registered call from RPC server
1058: *
1059: * @cli = RPC client
1060: * @rpc = IN RPC call structure
1061: * @funcname = Execute RPC function
1062: * @args = IN RPC calling arguments from RPC client
1063: * return: -1 error, !=-1 ok
1064: */
1065: int
1066: rpc_srv_execCall(rpc_cli_t * __restrict cli, struct tagRPCCall * __restrict rpc,
1067: ait_val_t funcname, array_t * __restrict args)
1068: {
1069: rpc_callback_t func;
1070:
1071: if (!cli || !rpc || !AIT_ADDR(&funcname)) {
1072: rpc_SetErr(EINVAL, "Invalid parameter can`t exec function");
1073: return -1;
1074: }
1075:
1076: func = AIT_GET_LIKE(&funcname, rpc_callback_t);
1077: return func(cli, rpc, args);
1078: }
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