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 1.9.2.24 2012/05/17 15:18:48 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: static void *
50: closeClient(sched_task_t *task)
51: {
52: rpc_cli_t *c = TASK_ARG(task);
53: rpc_srv_t *s = c->cli_parent;
54:
55: schedCancelby(TASK_ROOT(task), taskMAX, CRITERIA_ARG, TASK_ARG(task), NULL);
56:
57: /* close client socket */
58: if (TASK_VAL(task))
59: shutdown(c->cli_sock, SHUT_RDWR);
60: close(c->cli_sock);
61:
62: /* free buffer */
63: AIT_FREE_VAL(&c->cli_buf);
64:
65: io_arrayDel(s->srv_clients, c->cli_id, 42);
66: return NULL;
67: }
68:
69: static void *
70: txPacket(sched_task_t *task)
71: {
72: rpc_cli_t *c = TASK_ARG(task);
73: rpc_srv_t *s = c->cli_parent;
74: rpc_func_t *f = NULL;
75: u_char buf[USHRT_MAX] = { 0 };
76: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
77: int ret, wlen = sizeof(struct tagRPCCall);
78:
79: /* copy RPC header */
80: memcpy(buf, TASK_DATA(task), wlen);
81:
82: if (rpc->call_argc) {
83: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
84: if (!f) {
85: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
86: rpc->call_argc ^= rpc->call_argc;
87: rpc->call_rep.ret = RPC_ERROR(-1);
88: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
89: } else {
90: rpc->call_argc = htons(io_arraySize(f->func_vars));
91: /* Go Encapsulate variables */
92: ret = io_vars2buffer(buf + wlen, sizeof buf - wlen, f->func_vars);
93: /* Free return values */
94: io_clrVars(f->func_vars);
95: if (ret == -1) {
96: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
97: rpc->call_argc ^= rpc->call_argc;
98: rpc->call_rep.ret = RPC_ERROR(-1);
99: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
100: } else
101: wlen += ret;
102: }
103: }
104:
105: rpc->call_len = htons(wlen);
106:
107: /* calculate CRC */
108: rpc->call_crc ^= rpc->call_crc;
109: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
110:
111: /* send reply */
112: ret = send(TASK_FD(task), buf, wlen, MSG_NOSIGNAL);
113: if (ret == -1 || ret != wlen) {
114: /* close connection */
115: schedEvent(TASK_ROOT(task), closeClient, c, 42, NULL, 0);
116: }
117:
118: return NULL;
119: }
120:
121: static void *
122: execCall(sched_task_t *task)
123: {
124: rpc_cli_t *c = TASK_ARG(task);
125: rpc_srv_t *s = c->cli_parent;
126: rpc_func_t *f = NULL;
127: array_t *arr = NULL;
128: u_char *buf = AIT_GET_BUF(&c->cli_buf) + TASK_VAL(task);
129: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
130: int argc = ntohs(rpc->call_argc);
131:
132: /* Go decapsulate variables ... */
133: if (argc) {
134: arr = io_buffer2vars(buf + sizeof(struct tagRPCCall),
135: AIT_LEN(&c->cli_buf) - TASK_VAL(task) - sizeof(struct tagRPCCall),
136: argc, 1);
137: if (!arr) {
138: rpc_SetErr(ERPCMISMATCH, "#%d - %s", io_GetErrno(), io_GetError());
139: rpc->call_argc ^= rpc->call_argc;
140: rpc->call_rep.ret = RPC_ERROR(-1);
141: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
142: return NULL;
143: }
144: } else
145: arr = NULL;
146:
147: if (!(f = rpc_srv_getCall(s, ntohs(rpc->call_tag)))) {
148: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
149: rpc->call_argc ^= rpc->call_argc;
150: rpc->call_rep.ret = RPC_ERROR(-1);
151: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
152: } else {
153: /* if client doesn't want reply */
154: argc = rpc->call_req.flags & RPC_NOREPLY;
155: rpc->call_rep.ret = RPC_ERROR(rpc_srv_execCall(f, rpc, arr));
156: if (rpc->call_rep.ret == htonl(-1)) {
157: rpc->call_rep.eno = RPC_ERROR(errno);
158: rpc->call_argc ^= rpc->call_argc;
159: } else {
160: rpc->call_rep.eno ^= rpc->call_rep.eno;
161: if (argc) {
162: /* without reply */
163: io_clrVars(f->func_vars);
164: rpc->call_argc ^= rpc->call_argc;
165: } else {
166: /* reply */
167: rpc->call_argc = htons(io_arraySize(f->func_vars));
168: }
169: }
170: }
171:
172: io_arrayDestroy(&arr);
173: return NULL;
174: }
175:
176: static void *
177: rxPacket(sched_task_t *task)
178: {
179: rpc_cli_t *c = TASK_ARG(task);
180: rpc_srv_t *s = c->cli_parent;
181: int len, rlen, noreply;
182: u_short crc, off = TASK_DATLEN(task);
183: u_char *buf = AIT_GET_BUF(&c->cli_buf);
184: struct tagRPCCall *rpc;
185:
186: memset(buf, 0, AIT_LEN(&c->cli_buf));
187: rlen = recv(TASK_FD(task), buf + off, AIT_LEN(&c->cli_buf) - off, 0);
188: if (rlen < 1) {
189: /* close connection */
190: schedEvent(TASK_ROOT(task), closeClient, c, 42, NULL, 0);
191: return NULL;
192: } else {
193: rlen += off; /* add reminded bytes from previous rxPacket, if exists! */
194: off = 0; /* process buffer from start offset == 0 */
195: }
196:
197: do {
198: /* check RPC packet */
199: if (rlen < sizeof(struct tagRPCCall)) {
200: rpc_SetErr(ERPCMISMATCH, "Short RPC packet");
201:
202: /* reminder received previous bytes ;) */
203: schedRead(TASK_ROOT(task), TASK_FUNC(task), TASK_ARG(task),
204: TASK_FD(task), TASK_DATA(task), rlen);
205: return NULL;
206: } else
207: rpc = (struct tagRPCCall*) (buf + off);
208:
209: len = ntohs(rpc->call_len);
210: rlen -= len;
211:
212: /* check RPC packet lengths */
213: if (rlen < 0 || len < sizeof(struct tagRPCCall)) {
214: rpc_SetErr(ERPCMISMATCH, "Broken RPC packet length");
215: /* skip entire packet */
216: break;
217: }
218:
219: /* check integrity of packet */
220: crc = ntohs(rpc->call_crc);
221: rpc->call_crc ^= rpc->call_crc;
222: if (crc != crcFletcher16((u_short*) rpc, len / 2)) {
223: rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet");
224:
225: off += len;
226: /* try next packet remaining into buffer */
227: continue;
228: }
229:
230: noreply = rpc->call_req.flags & RPC_NOREPLY;
231:
232: /* check RPC packet session info */
233: if (rpc_chkPktSession(&rpc->call_session, &s->srv_session)) {
234: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
235: rpc->call_argc ^= rpc->call_argc;
236: rpc->call_rep.ret = RPC_ERROR(-1);
237: rpc->call_rep.eno = RPC_ERROR(errno);
238: } else {
239: /* execute RPC call */
240: schedEvent(TASK_ROOT(task), execCall, TASK_ARG(task), off, NULL, 0);
241: }
242:
243: /* send RPC reply */
244: if (!noreply)
245: schedWrite(TASK_ROOT(task), txPacket, TASK_ARG(task), TASK_FD(task), rpc, len);
246:
247: off += len;
248: } while (rlen > 0);
249:
250: /* lets get next packet */
251: schedRead(TASK_ROOT(task), TASK_FUNC(task), TASK_ARG(task), TASK_FD(task), TASK_DATA(task), 0);
252: return NULL;
253: }
254:
255: static void *
256: acceptClients(sched_task_t *task)
257: {
258: rpc_srv_t *srv = TASK_ARG(task);
259: rpc_cli_t *c = NULL;
260: register int i;
261: socklen_t salen = sizeof(io_sockaddr_t);
262:
263: /* check free slots for connect */
264: for (i = 0; i < io_arraySize(srv->srv_clients) &&
265: (c = io_array(srv->srv_clients, i, rpc_cli_t*)); i++);
266: if (c) /* no more free slots! */
267: goto end;
268: c = malloc(sizeof(rpc_cli_t));
269: if (!c) {
270: LOGERR;
271: srv->srv_kill = 1;
272: return NULL;
273: } else {
274: memset(c, 0, sizeof(rpc_cli_t));
275: io_arraySet(srv->srv_clients, i, c);
276: c->cli_id = i;
277: c->cli_parent = srv;
278: }
279:
280: /* alloc empty buffer */
281: AIT_SET_BUF2(&c->cli_buf, 0, srv->srv_netbuf);
282:
283: /* accept client */
284: c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen);
285: if (c->cli_sock == -1) {
286: LOGERR;
287: AIT_FREE_VAL(&c->cli_buf);
288: io_arrayDel(srv->srv_clients, i, 42);
289: goto end;
290: } else
291: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
292:
293: schedRead(TASK_ROOT(task), rxPacket, c, c->cli_sock, NULL, 0);
294: end:
295: schedReadSelf(task);
296: return NULL;
297: }
298:
299: /* ------------------------------------------------------ */
300:
301: static void *
302: closeBLOBClient(sched_task_t *task)
303: {
304: rpc_cli_t *c = TASK_ARG(task);
305: rpc_srv_t *s = c->cli_parent;
306:
307: schedCancelby(TASK_ROOT(task), taskMAX, CRITERIA_ARG, TASK_ARG(task), NULL);
308:
309: /* close client socket */
310: if (TASK_VAL(task))
311: shutdown(c->cli_sock, SHUT_RDWR);
312: close(c->cli_sock);
313:
314: /* free buffer */
315: AIT_FREE_VAL(&c->cli_buf);
316:
317: io_arrayDel(s->srv_blob.clients, c->cli_id, 42);
318: return NULL;
319: }
320:
321: static void *
322: txBLOB(sched_task_t *task)
323: {
324: rpc_cli_t *c = TASK_ARG(task);
325: u_char *buf = AIT_GET_BUF(&c->cli_buf);
326: struct tagBLOBHdr *blob = (struct tagBLOBHdr *) buf;
327: int wlen = sizeof(struct tagBLOBHdr);
328:
329: /* calculate CRC */
330: blob->hdr_crc ^= blob->hdr_crc;
331: blob->hdr_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
332:
333: /* send reply */
334: wlen = send(TASK_FD(task), buf, wlen, MSG_NOSIGNAL);
335: if (wlen == -1 || wlen != sizeof(struct tagBLOBHdr)) {
336: /* close blob connection */
337: schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0);
338: }
339:
340: return NULL;
341: }
342:
343: static void *
344: rxBLOB(sched_task_t *task)
345: {
346: rpc_cli_t *c = TASK_ARG(task);
347: rpc_srv_t *s = c->cli_parent;
348: rpc_blob_t *b;
349: struct tagBLOBHdr blob;
350: int rlen;
351: u_short crc;
352:
353: memset(&blob, 0, sizeof blob);
354: rlen = recv(TASK_FD(task), &blob, sizeof blob, 0);
355: if (rlen < 1) {
356: /* close blob connection */
357: schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0);
358: return NULL;
359: }
360:
361: /* check BLOB packet */
362: if (rlen < sizeof(struct tagBLOBHdr)) {
363: rpc_SetErr(ERPCMISMATCH, "Short BLOB packet");
364:
365: schedReadSelf(task);
366: return NULL;
367: }
368:
369: /* check integrity of packet */
370: crc = ntohs(blob.hdr_crc);
371: blob.hdr_crc ^= blob.hdr_crc;
372: if (crc != crcFletcher16((u_short*) &blob, rlen / 2)) {
373: rpc_SetErr(ERPCMISMATCH, "Bad CRC BLOB packet");
374:
375: schedReadSelf(task);
376: return NULL;
377: }
378:
379: /* check RPC packet session info */
380: if ((crc = rpc_chkPktSession(&blob.hdr_session, &s->srv_session))) {
381: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
382: blob.hdr_cmd = error;
383: goto end;
384: }
385:
386: /* Go to proceed packet ... */
387: switch (blob.hdr_cmd) {
388: case get:
389: if (!(b = rpc_srv_getBLOB(s, ntohl(blob.hdr_var)))) {
390: rpc_SetErr(EINVAL, "Var=%x not found", ntohl(blob.hdr_var));
391: blob.hdr_cmd = no;
392: blob.hdr_ret = RPC_ERROR(-1);
393: break;
394: } else
395: blob.hdr_len = htonl(b->blob_len);
396:
397: if (rpc_srv_blobMap(s, b) != -1) {
398: /* deliver BLOB variable to client */
399: blob.hdr_ret = htonl(rpc_srv_sendBLOB(c, b));
400: rpc_srv_blobUnmap(b);
401: } else {
402: blob.hdr_cmd = error;
403: blob.hdr_ret = RPC_ERROR(-1);
404: }
405: break;
406: case set:
407: if ((b = rpc_srv_registerBLOB(s, ntohl(blob.hdr_len)))) {
408: /* set new BLOB variable for reply :) */
409: blob.hdr_var = htonl(b->blob_var);
410:
411: /* receive BLOB from client */
412: blob.hdr_ret = htonl(rpc_srv_recvBLOB(c, b));
413: rpc_srv_blobUnmap(b);
414: } else {
415: blob.hdr_cmd = error;
416: blob.hdr_ret = RPC_ERROR(-1);
417: }
418: break;
419: case unset:
420: if (rpc_srv_unregisterBLOB(s, blob.hdr_var) == -1) {
421: blob.hdr_cmd = error;
422: blob.hdr_ret = RPC_ERROR(-1);
423: }
424: break;
425: default:
426: rpc_SetErr(EPROCUNAVAIL, "Unsupported BLOB command %d", blob.hdr_cmd);
427: blob.hdr_cmd = error;
428: blob.hdr_ret = RPC_ERROR(-1);
429: }
430:
431: end:
432: memcpy(AIT_ADDR(&c->cli_buf), &blob, sizeof blob);
433: schedWrite(TASK_ROOT(task), txBLOB, TASK_ARG(task), TASK_FD(task), NULL, 0);
434: schedReadSelf(task);
435: return NULL;
436: }
437:
438: static void *
439: acceptBLOBClients(sched_task_t *task)
440: {
441: rpc_srv_t *srv = TASK_ARG(task);
442: rpc_cli_t *c = NULL;
443: register int i;
444: socklen_t salen = sizeof(io_sockaddr_t);
445:
446: /* check free slots for connect */
447: for (i = 0; i < io_arraySize(srv->srv_blob.clients) &&
448: (c = io_array(srv->srv_blob.clients, i, rpc_cli_t*)); i++);
449: if (c) /* no more free slots! */
450: goto end;
451: c = malloc(sizeof(rpc_cli_t));
452: if (!c) {
453: LOGERR;
454: srv->srv_kill = srv->srv_blob.kill = 1;
455: return NULL;
456: } else {
457: memset(c, 0, sizeof(rpc_cli_t));
458: io_arraySet(srv->srv_blob.clients, i, c);
459: c->cli_id = i;
460: c->cli_parent = srv;
461: }
462:
463: /* alloc empty buffer */
464: AIT_SET_BUF2(&c->cli_buf, 0, srv->srv_netbuf);
465:
466: /* accept client */
467: c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen);
468: if (c->cli_sock == -1) {
469: LOGERR;
470: AIT_FREE_VAL(&c->cli_buf);
471: io_arrayDel(srv->srv_blob.clients, i, 42);
472: goto end;
473: } else
474: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
475:
476: schedRead(TASK_ROOT(task), rxBLOB, c, c->cli_sock, NULL, 0);
477: end:
478: schedReadSelf(task);
479: return NULL;
480: }
481:
482: /* ------------------------------------------------------ */
483:
484: /*
485: * rpc_srv_initBLOBServer() - Init & create BLOB Server
486: *
487: * @srv = RPC server instance
488: * @Port = Port for bind server, if Port == 0 default port is selected
489: * @diskDir = Disk place for BLOB file objects
490: * return: -1 == error or 0 bind and created BLOB server instance
491: */
492: int
493: rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, u_short Port, const char *diskDir)
494: {
495: int n = 1;
496:
497: if (!srv || srv->srv_kill) {
498: rpc_SetErr(EINVAL, "Invalid parameters can`t init BLOB server");
499: return -1;
500: }
501:
502: memset(&srv->srv_blob, 0, sizeof srv->srv_blob);
503: if (access(diskDir, R_OK | W_OK) == -1) {
504: LOGERR;
505: return -1;
506: } else
507: AIT_SET_STR(&srv->srv_blob.dir, diskDir);
508:
509: /* init blob list */
510: TAILQ_INIT(&srv->srv_blob.blobs);
511:
512: srv->srv_blob.server.cli_parent = srv;
513:
514: memcpy(&srv->srv_blob.server.cli_sa, &srv->srv_server.cli_sa, sizeof(io_sockaddr_t));
515: switch (srv->srv_blob.server.cli_sa.sa.sa_family) {
516: case AF_INET:
517: srv->srv_blob.server.cli_sa.sin.sin_port =
518: htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin.sin_port) + 1);
519: break;
520: case AF_INET6:
521: srv->srv_blob.server.cli_sa.sin6.sin6_port =
522: htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin6.sin6_port) + 1);
523: break;
524: case AF_LOCAL:
525: strlcat(srv->srv_blob.server.cli_sa.sun.sun_path, ".blob",
526: sizeof srv->srv_blob.server.cli_sa.sun.sun_path);
527: break;
528: default:
529: AIT_FREE_VAL(&srv->srv_blob.dir);
530: return -1;
531: }
532:
533: /* create BLOB server socket */
534: srv->srv_blob.server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, SOCK_STREAM, 0);
535: if (srv->srv_blob.server.cli_sock == -1) {
536: LOGERR;
537: AIT_FREE_VAL(&srv->srv_blob.dir);
538: return -1;
539: }
540: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
541: LOGERR;
542: close(srv->srv_blob.server.cli_sock);
543: AIT_FREE_VAL(&srv->srv_blob.dir);
544: return -1;
545: }
546: n = srv->srv_netbuf;
547: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
548: LOGERR;
549: close(srv->srv_blob.server.cli_sock);
550: AIT_FREE_VAL(&srv->srv_blob.dir);
551: return -1;
552: }
553: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
554: LOGERR;
555: close(srv->srv_blob.server.cli_sock);
556: AIT_FREE_VAL(&srv->srv_blob.dir);
557: return -1;
558: }
559: if (bind(srv->srv_blob.server.cli_sock, &srv->srv_blob.server.cli_sa.sa,
560: srv->srv_blob.server.cli_sa.sa.sa_len) == -1) {
561: LOGERR;
562: close(srv->srv_blob.server.cli_sock);
563: AIT_FREE_VAL(&srv->srv_blob.dir);
564: return -1;
565: }
566:
567: /* allocate pool for concurent blob clients */
568: srv->srv_blob.clients = io_arrayInit(io_arraySize(srv->srv_clients));
569: if (!srv->srv_blob.clients) {
570: rpc_SetErr(io_GetErrno(), "%s", io_GetError());
571: close(srv->srv_blob.server.cli_sock);
572: AIT_FREE_VAL(&srv->srv_blob.dir);
573: return -1;
574: }
575:
576: /* init blob scheduler */
577: srv->srv_blob.root = schedBegin();
578: if (!srv->srv_blob.root) {
579: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
580: io_arrayDestroy(&srv->srv_blob.clients);
581: close(srv->srv_blob.server.cli_sock);
582: AIT_FREE_VAL(&srv->srv_blob.dir);
583: return -1;
584: }
585:
586: return 0;
587: }
588:
589: /*
590: * rpc_srv_endBLOBServer() - Destroy BLOB server, close all opened sockets and free resources
591: *
592: * @srv = RPC Server instance
593: * return: none
594: */
595: void
596: rpc_srv_endBLOBServer(rpc_srv_t * __restrict srv)
597: {
598: rpc_cli_t *c;
599: register int i;
600: rpc_blob_t *b, *tmp;
601:
602: if (!srv)
603: return;
604:
605: if (srv->srv_blob.tid) {
606: pthread_cancel(srv->srv_blob.tid);
607: pthread_join(srv->srv_blob.tid, NULL);
608: }
609:
610: /* close all clients connections & server socket */
611: for (i = 0; i < io_arraySize(srv->srv_blob.clients); i++) {
612: c = io_array(srv->srv_blob.clients, i, rpc_cli_t*);
613: if (c) {
614: shutdown(c->cli_sock, SHUT_RDWR);
615: close(c->cli_sock);
616:
617: schedCancelby(srv->srv_blob.root, taskMAX, CRITERIA_ARG, c, NULL);
618: AIT_FREE_VAL(&c->cli_buf);
619: }
620: io_arrayDel(srv->srv_blob.clients, i, 42);
621: }
622: io_arrayDestroy(&srv->srv_blob.clients);
623:
624: close(srv->srv_blob.server.cli_sock);
625:
626: /* detach blobs */
627: TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) {
628: TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node);
629:
630: rpc_srv_blobFree(srv, b);
631: free(b);
632: }
633:
634: schedEnd(&srv->srv_blob.root);
635: AIT_FREE_VAL(&srv->srv_blob.dir);
636: }
637:
638: /*
639: * rpc_srv_loopBLOBServer() - Execute Main BLOB server loop and wait for clients requests
640: *
641: * @srv = RPC Server instance
642: * return: -1 error or 0 ok, infinite loop ...
643: */
644: int
645: rpc_srv_loopBLOBServer(rpc_srv_t * __restrict srv)
646: {
647: if (!srv || srv->srv_kill) {
648: rpc_SetErr(EINVAL, "Invalid parameter can`t start BLOB server");
649: return -1;
650: }
651:
652: fcntl(srv->srv_blob.server.cli_sock, F_SETFL,
653: fcntl(srv->srv_blob.server.cli_sock, F_GETFL) | O_NONBLOCK);
654:
655: if (listen(srv->srv_blob.server.cli_sock, io_arraySize(srv->srv_blob.clients)) == -1) {
656: LOGERR;
657: return -1;
658: }
659:
660: if (!schedRead(srv->srv_blob.root, acceptBLOBClients, srv,
661: srv->srv_blob.server.cli_sock, NULL, 0)) {
662: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
663: return -1;
664: }
665:
666: /* main rpc loop */
667: schedRun(srv->srv_blob.root, &srv->srv_blob.kill);
668: return 0;
669: }
670:
671:
672: /*
673: * rpc_srv_initServer() - Init & create RPC Server
674: *
675: * @regProgID = ProgramID for authentication & recognition
676: * @regProcID = ProcessID for authentication & recognition
677: * @concurentClients = Concurent clients at same time to this server
678: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
679: * @csHost = Host name or address for bind server, if NULL any address
680: * @Port = Port for bind server, if Port == 0 default port is selected
681: * return: NULL == error or !=NULL bind and created RPC server instance
682: */
683: rpc_srv_t *
684: rpc_srv_initServer(u_int regProgID, u_char regProcID, int concurentClients,
685: int netBuf, const char *csHost, u_short Port)
686: {
687: int n = 1;
688: rpc_srv_t *srv = NULL;
689: io_sockaddr_t sa;
690:
691: if (!concurentClients || !regProgID) {
692: rpc_SetErr(EINVAL, "Invalid parameters can`t init RPC server");
693: return NULL;
694: }
695: if (!io_gethostbyname(csHost, Port, &sa))
696: return NULL;
697: if (!Port)
698: Port = RPC_DEFPORT;
699: if (netBuf < RPC_MIN_BUFSIZ)
700: netBuf = BUFSIZ;
701: else
702: netBuf = io_align(netBuf, 1); /* align netBuf length */
703:
704: #ifdef HAVE_SRANDOMDEV
705: srandomdev();
706: #else
707: time_t tim;
708:
709: srandom((time(&tim) ^ getpid()));
710: #endif
711:
712: srv = malloc(sizeof(rpc_srv_t));
713: if (!srv) {
714: LOGERR;
715: return NULL;
716: } else
717: memset(srv, 0, sizeof(rpc_srv_t));
718:
719: srv->srv_netbuf = netBuf;
720: srv->srv_session.sess_version = RPC_VERSION;
721: srv->srv_session.sess_program = regProgID;
722: srv->srv_session.sess_process = regProcID;
723:
724: srv->srv_server.cli_parent = srv;
725: memcpy(&srv->srv_server.cli_sa, &sa, sizeof srv->srv_server.cli_sa);
726:
727: /* init functions list */
728: TAILQ_INIT(&srv->srv_funcs);
729:
730: /* init scheduler */
731: srv->srv_root = schedBegin();
732: if (!srv->srv_root) {
733: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
734: free(srv);
735: return NULL;
736: }
737:
738: /* init pool for clients */
739: srv->srv_clients = io_arrayInit(concurentClients);
740: if (!srv->srv_clients) {
741: rpc_SetErr(io_GetErrno(), "%s", io_GetError());
742: schedEnd(&srv->srv_root);
743: free(srv);
744: return NULL;
745: }
746:
747: /* create server socket */
748: srv->srv_server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, SOCK_STREAM, 0);
749: if (srv->srv_server.cli_sock == -1) {
750: LOGERR;
751: io_arrayDestroy(&srv->srv_clients);
752: schedEnd(&srv->srv_root);
753: free(srv);
754: return NULL;
755: }
756: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
757: LOGERR;
758: goto err;
759: }
760: n = srv->srv_netbuf;
761: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
762: LOGERR;
763: goto err;
764: }
765: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
766: LOGERR;
767: goto err;
768: }
769: if (bind(srv->srv_server.cli_sock, &srv->srv_server.cli_sa.sa,
770: srv->srv_server.cli_sa.sa.sa_len) == -1) {
771: LOGERR;
772: goto err;
773: }
774:
775: rpc_register_srvPing(srv);
776:
777: return srv;
778: err: /* error condition */
779: close(srv->srv_server.cli_sock);
780: io_arrayDestroy(&srv->srv_clients);
781: schedEnd(&srv->srv_root);
782: free(srv);
783: return NULL;
784: }
785:
786: /*
787: * rpc_srv_endServer() - Destroy RPC server, close all opened sockets and free resources
788: *
789: * @psrv = RPC Server instance
790: * return: none
791: */
792: void
793: rpc_srv_endServer(rpc_srv_t ** __restrict psrv)
794: {
795: rpc_cli_t *c;
796: register int i;
797: rpc_func_t *f, *tmp;
798:
799: if (!psrv || !*psrv)
800: return;
801:
802: if (!(*psrv)->srv_blob.kill)
803: rpc_srv_endBLOBServer(*psrv);
804:
805: /* close all clients connections & server socket */
806: for (i = 0; i < io_arraySize((*psrv)->srv_clients); i++) {
807: c = io_array((*psrv)->srv_clients, i, rpc_cli_t*);
808: if (c) {
809: shutdown(c->cli_sock, SHUT_RDWR);
810: close(c->cli_sock);
811:
812: schedCancelby((*psrv)->srv_root, taskMAX, CRITERIA_ARG, c, NULL);
813: AIT_FREE_VAL(&c->cli_buf);
814: }
815: io_arrayDel((*psrv)->srv_clients, i, 42);
816: }
817: io_arrayDestroy(&(*psrv)->srv_clients);
818:
819: close((*psrv)->srv_server.cli_sock);
820:
821: /* detach exported calls */
822: TAILQ_FOREACH_SAFE(f, &(*psrv)->srv_funcs, func_node, tmp) {
823: TAILQ_REMOVE(&(*psrv)->srv_funcs, f, func_node);
824:
825: io_freeVars(&f->func_vars);
826: AIT_FREE_VAL(&f->func_name);
827: free(f);
828: }
829:
830: schedEnd(&(*psrv)->srv_root);
831: free(*psrv);
832: *psrv = NULL;
833: }
834:
835: /*
836: * rpc_srv_loopServer() - Execute Main server loop and wait for clients requests
837: *
838: * @srv = RPC Server instance
839: * return: -1 error or 0 ok, infinite loop ...
840: */
841: int
842: rpc_srv_loopServer(rpc_srv_t * __restrict srv)
843: {
844: if (!srv) {
845: rpc_SetErr(EINVAL, "Invalid parameter can`t start RPC server");
846: return -1;
847: }
848:
849: fcntl(srv->srv_server.cli_sock, F_SETFL,
850: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
851:
852: if (listen(srv->srv_server.cli_sock, io_arraySize(srv->srv_clients)) == -1) {
853: LOGERR;
854: return -1;
855: }
856:
857: if (!schedRead(srv->srv_root, acceptClients, srv, srv->srv_server.cli_sock, NULL, 0)) {
858: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
859: return -1;
860: }
861:
862: /* main rpc loop */
863: schedRun(srv->srv_root, &srv->srv_kill);
864: return 0;
865: }
866:
867:
868: /*
869: * rpc_srv_execCall() Execute registered call from RPC server
870: *
871: * @call = Register RPC call
872: * @rpc = IN RPC call structure
873: * @args = IN RPC calling arguments from RPC client
874: * return: -1 error, !=-1 ok
875: */
876: int
877: rpc_srv_execCall(rpc_func_t * __restrict call, struct tagRPCCall * __restrict rpc,
878: array_t * __restrict args)
879: {
880: rpc_callback_t func;
881:
882: if (!call || !rpc || !call->func_parent || !AIT_ADDR(&call->func_name)) {
883: rpc_SetErr(EINVAL, "Invalid parameter can`t exec function");
884: return -1;
885: }
886:
887: func = AIT_GET_LIKE(&call->func_name, rpc_callback_t);
888: return func(call, rpc, args);
889: }
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