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 1.10 2012/05/19 00:29:52 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, 0);
66: if (c)
67: free(c);
68: return NULL;
69: }
70:
71: static void *
72: txPacket(sched_task_t *task)
73: {
74: rpc_cli_t *c = TASK_ARG(task);
75: rpc_srv_t *s = c->cli_parent;
76: rpc_func_t *f = NULL;
77: u_char buf[USHRT_MAX] = { 0 };
78: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
79: int ret, wlen = sizeof(struct tagRPCCall);
80:
81: /* copy RPC header */
82: memcpy(buf, TASK_DATA(task), wlen);
83:
84: if (rpc->call_argc) {
85: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
86: if (!f) {
87: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
88: rpc->call_argc ^= rpc->call_argc;
89: rpc->call_rep.ret = RPC_ERROR(-1);
90: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
91: } else {
92: rpc->call_argc = htons(io_arraySize(RPC_RETVARS(c)));
93: /* Go Encapsulate variables */
94: ret = io_vars2buffer(buf + wlen, sizeof buf - wlen, RPC_RETVARS(c));
95: /* Free return values */
96: io_freeVars(&c->cli_vars);
97: if (ret == -1) {
98: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
99: rpc->call_argc ^= rpc->call_argc;
100: rpc->call_rep.ret = RPC_ERROR(-1);
101: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
102: } else
103: wlen += ret;
104: }
105: }
106:
107: rpc->call_len = htons(wlen);
108:
109: /* calculate CRC */
110: rpc->call_crc ^= rpc->call_crc;
111: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
112:
113: /* send reply */
114: ret = send(TASK_FD(task), buf, wlen, MSG_NOSIGNAL);
115: if (ret == -1 || ret != wlen) {
116: /* close connection */
117: schedEvent(TASK_ROOT(task), closeClient, c, 42, NULL, 0);
118: }
119:
120: return NULL;
121: }
122:
123: static void *
124: execCall(sched_task_t *task)
125: {
126: rpc_cli_t *c = TASK_ARG(task);
127: rpc_srv_t *s = c->cli_parent;
128: rpc_func_t *f = NULL;
129: array_t *arr = NULL;
130: u_char *buf = AIT_GET_BUF(&c->cli_buf) + TASK_VAL(task);
131: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
132: int argc = ntohs(rpc->call_argc);
133:
134: /* Go decapsulate variables ... */
135: if (argc) {
136: arr = io_buffer2vars(buf + sizeof(struct tagRPCCall),
137: AIT_LEN(&c->cli_buf) - TASK_VAL(task) - sizeof(struct tagRPCCall),
138: argc, 1);
139: if (!arr) {
140: rpc_SetErr(ERPCMISMATCH, "#%d - %s", io_GetErrno(), io_GetError());
141: rpc->call_argc ^= rpc->call_argc;
142: rpc->call_rep.ret = RPC_ERROR(-1);
143: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
144: return NULL;
145: }
146: } else
147: arr = NULL;
148:
149: if (!(f = rpc_srv_getCall(s, ntohs(rpc->call_tag)))) {
150: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
151: rpc->call_argc ^= rpc->call_argc;
152: rpc->call_rep.ret = RPC_ERROR(-1);
153: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
154: } else {
155: /* if client doesn't want reply */
156: argc = RPC_CHK_NOREPLY(rpc);
157: rpc->call_rep.ret = RPC_ERROR(rpc_srv_execCall(c, rpc, f->func_name, arr));
158: if (rpc->call_rep.ret == htonl(-1)) {
159: rpc->call_rep.eno = RPC_ERROR(errno);
160: rpc->call_argc ^= rpc->call_argc;
161: } else {
162: rpc->call_rep.eno ^= rpc->call_rep.eno;
163: if (argc) {
164: /* without reply */
165: io_freeVars(&c->cli_vars);
166: rpc->call_argc ^= rpc->call_argc;
167: } else {
168: /* reply */
169: rpc->call_argc = htons(io_arraySize(RPC_RETVARS(c)));
170: }
171: }
172: }
173:
174: io_arrayDestroy(&arr);
175: return NULL;
176: }
177:
178: static void *
179: rxPacket(sched_task_t *task)
180: {
181: rpc_cli_t *c = TASK_ARG(task);
182: rpc_srv_t *s = c->cli_parent;
183: int len, rlen, noreply;
184: u_short crc, off = TASK_DATLEN(task);
185: u_char *buf = AIT_GET_BUF(&c->cli_buf);
186: struct tagRPCCall *rpc;
187:
188: memset(buf, 0, AIT_LEN(&c->cli_buf));
189: rlen = recv(TASK_FD(task), buf + off, AIT_LEN(&c->cli_buf) - off, 0);
190: if (rlen < 1) {
191: /* close connection */
192: schedEvent(TASK_ROOT(task), closeClient, c, 42, NULL, 0);
193: return NULL;
194: } else {
195: rlen += off; /* add reminded bytes from previous rxPacket, if exists! */
196: off = 0; /* process buffer from start offset == 0 */
197: }
198:
199: do {
200: /* check RPC packet */
201: if (rlen < sizeof(struct tagRPCCall)) {
202: rpc_SetErr(ERPCMISMATCH, "Short RPC packet");
203:
204: /* reminder received previous bytes ;) */
205: schedRead(TASK_ROOT(task), TASK_FUNC(task), TASK_ARG(task),
206: TASK_FD(task), TASK_DATA(task), rlen);
207: return NULL;
208: } else
209: rpc = (struct tagRPCCall*) (buf + off);
210:
211: len = ntohs(rpc->call_len);
212: rlen -= len;
213:
214: /* check RPC packet lengths */
215: if (rlen < 0 || len < sizeof(struct tagRPCCall)) {
216: rpc_SetErr(ERPCMISMATCH, "Broken RPC packet length");
217: /* skip entire packet */
218: break;
219: }
220:
221: /* check integrity of packet */
222: crc = ntohs(rpc->call_crc);
223: rpc->call_crc ^= rpc->call_crc;
224: if (crc != crcFletcher16((u_short*) rpc, len / 2)) {
225: rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet");
226:
227: off += len;
228: /* try next packet remaining into buffer */
229: continue;
230: }
231:
232: noreply = RPC_CHK_NOREPLY(rpc);
233:
234: /* check RPC packet session info */
235: if (rpc_chkPktSession(&rpc->call_session, &s->srv_session)) {
236: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
237: rpc->call_argc ^= rpc->call_argc;
238: rpc->call_rep.ret = RPC_ERROR(-1);
239: rpc->call_rep.eno = RPC_ERROR(errno);
240: } else {
241: /* execute RPC call */
242: schedEvent(TASK_ROOT(task), execCall, TASK_ARG(task), off, NULL, 0);
243: }
244:
245: /* send RPC reply */
246: if (!noreply)
247: schedWrite(TASK_ROOT(task), txPacket, TASK_ARG(task), TASK_FD(task), rpc, len);
248:
249: off += len;
250: } while (rlen > 0);
251:
252: /* lets get next packet */
253: schedRead(TASK_ROOT(task), TASK_FUNC(task), TASK_ARG(task), TASK_FD(task), TASK_DATA(task), 0);
254: return NULL;
255: }
256:
257: static void *
258: acceptClients(sched_task_t *task)
259: {
260: rpc_srv_t *srv = TASK_ARG(task);
261: rpc_cli_t *c = NULL;
262: register int i;
263: socklen_t salen = sizeof(io_sockaddr_t);
264:
265: /* check free slots for connect */
266: for (i = 0; i < io_arraySize(srv->srv_clients) &&
267: (c = io_array(srv->srv_clients, i, rpc_cli_t*)); i++);
268: if (c) /* no more free slots! */
269: goto end;
270: c = malloc(sizeof(rpc_cli_t));
271: if (!c) {
272: LOGERR;
273: srv->srv_kill = 1;
274: return NULL;
275: } else {
276: memset(c, 0, sizeof(rpc_cli_t));
277: io_arraySet(srv->srv_clients, i, c);
278: c->cli_id = i;
279: c->cli_parent = srv;
280: }
281:
282: /* alloc empty buffer */
283: AIT_SET_BUF2(&c->cli_buf, 0, srv->srv_netbuf);
284:
285: /* accept client */
286: c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen);
287: if (c->cli_sock == -1) {
288: LOGERR;
289: AIT_FREE_VAL(&c->cli_buf);
290: io_arrayDel(srv->srv_clients, i, 42);
291: goto end;
292: } else
293: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
294:
295: schedRead(TASK_ROOT(task), rxPacket, c, c->cli_sock, NULL, 0);
296: end:
297: schedReadSelf(task);
298: return NULL;
299: }
300:
301: /* ------------------------------------------------------ */
302:
303: static void *
304: closeBLOBClient(sched_task_t *task)
305: {
306: rpc_cli_t *c = TASK_ARG(task);
307: rpc_srv_t *s = c->cli_parent;
308:
309: schedCancelby(TASK_ROOT(task), taskMAX, CRITERIA_ARG, TASK_ARG(task), NULL);
310:
311: /* close client socket */
312: if (TASK_VAL(task))
313: shutdown(c->cli_sock, SHUT_RDWR);
314: close(c->cli_sock);
315:
316: /* free buffer */
317: AIT_FREE_VAL(&c->cli_buf);
318:
319: io_arrayDel(s->srv_blob.clients, c->cli_id, 0);
320: if (c)
321: free(c);
322: return NULL;
323: }
324:
325: static void *
326: txBLOB(sched_task_t *task)
327: {
328: rpc_cli_t *c = TASK_ARG(task);
329: u_char *buf = AIT_GET_BUF(&c->cli_buf);
330: struct tagBLOBHdr *blob = (struct tagBLOBHdr *) buf;
331: int wlen = sizeof(struct tagBLOBHdr);
332:
333: /* calculate CRC */
334: blob->hdr_crc ^= blob->hdr_crc;
335: blob->hdr_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
336:
337: /* send reply */
338: wlen = send(TASK_FD(task), buf, wlen, MSG_NOSIGNAL);
339: if (wlen == -1 || wlen != sizeof(struct tagBLOBHdr)) {
340: /* close blob connection */
341: schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0);
342: }
343:
344: return NULL;
345: }
346:
347: static void *
348: rxBLOB(sched_task_t *task)
349: {
350: rpc_cli_t *c = TASK_ARG(task);
351: rpc_srv_t *s = c->cli_parent;
352: rpc_blob_t *b;
353: struct tagBLOBHdr blob;
354: int rlen;
355: u_short crc;
356:
357: memset(&blob, 0, sizeof blob);
358: rlen = recv(TASK_FD(task), &blob, sizeof blob, 0);
359: if (rlen < 1) {
360: /* close blob connection */
361: schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0);
362: return NULL;
363: }
364:
365: /* check BLOB packet */
366: if (rlen < sizeof(struct tagBLOBHdr)) {
367: rpc_SetErr(ERPCMISMATCH, "Short BLOB packet");
368:
369: schedReadSelf(task);
370: return NULL;
371: }
372:
373: /* check integrity of packet */
374: crc = ntohs(blob.hdr_crc);
375: blob.hdr_crc ^= blob.hdr_crc;
376: if (crc != crcFletcher16((u_short*) &blob, rlen / 2)) {
377: rpc_SetErr(ERPCMISMATCH, "Bad CRC BLOB packet");
378:
379: schedReadSelf(task);
380: return NULL;
381: }
382:
383: /* check RPC packet session info */
384: if ((crc = rpc_chkPktSession(&blob.hdr_session, &s->srv_session))) {
385: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
386: blob.hdr_cmd = error;
387: goto end;
388: }
389:
390: /* Go to proceed packet ... */
391: switch (blob.hdr_cmd) {
392: case get:
393: if (!(b = rpc_srv_getBLOB(s, ntohl(blob.hdr_var)))) {
394: rpc_SetErr(EINVAL, "Var=%x not found", ntohl(blob.hdr_var));
395: blob.hdr_cmd = no;
396: blob.hdr_ret = RPC_ERROR(-1);
397: break;
398: } else
399: blob.hdr_len = htonl(b->blob_len);
400:
401: if (rpc_srv_blobMap(s, b) != -1) {
402: /* deliver BLOB variable to client */
403: blob.hdr_ret = htonl(rpc_srv_sendBLOB(c, b));
404: rpc_srv_blobUnmap(b);
405: } else {
406: blob.hdr_cmd = error;
407: blob.hdr_ret = RPC_ERROR(-1);
408: }
409: break;
410: case set:
411: if ((b = rpc_srv_registerBLOB(s, ntohl(blob.hdr_len)))) {
412: /* set new BLOB variable for reply :) */
413: blob.hdr_var = htonl(b->blob_var);
414:
415: /* receive BLOB from client */
416: blob.hdr_ret = htonl(rpc_srv_recvBLOB(c, b));
417: rpc_srv_blobUnmap(b);
418: } else {
419: blob.hdr_cmd = error;
420: blob.hdr_ret = RPC_ERROR(-1);
421: }
422: break;
423: case unset:
424: if (rpc_srv_unregisterBLOB(s, blob.hdr_var) == -1) {
425: blob.hdr_cmd = error;
426: blob.hdr_ret = RPC_ERROR(-1);
427: }
428: break;
429: default:
430: rpc_SetErr(EPROCUNAVAIL, "Unsupported BLOB command %d", blob.hdr_cmd);
431: blob.hdr_cmd = error;
432: blob.hdr_ret = RPC_ERROR(-1);
433: }
434:
435: end:
436: memcpy(AIT_ADDR(&c->cli_buf), &blob, sizeof blob);
437: schedWrite(TASK_ROOT(task), txBLOB, TASK_ARG(task), TASK_FD(task), NULL, 0);
438: schedReadSelf(task);
439: return NULL;
440: }
441:
442: static void *
443: acceptBLOBClients(sched_task_t *task)
444: {
445: rpc_srv_t *srv = TASK_ARG(task);
446: rpc_cli_t *c = NULL;
447: register int i;
448: socklen_t salen = sizeof(io_sockaddr_t);
449:
450: /* check free slots for connect */
451: for (i = 0; i < io_arraySize(srv->srv_blob.clients) &&
452: (c = io_array(srv->srv_blob.clients, i, rpc_cli_t*)); i++);
453: if (c) /* no more free slots! */
454: goto end;
455: c = malloc(sizeof(rpc_cli_t));
456: if (!c) {
457: LOGERR;
458: srv->srv_kill = srv->srv_blob.kill = 1;
459: return NULL;
460: } else {
461: memset(c, 0, sizeof(rpc_cli_t));
462: io_arraySet(srv->srv_blob.clients, i, c);
463: c->cli_id = i;
464: c->cli_parent = srv;
465: }
466:
467: /* alloc empty buffer */
468: AIT_SET_BUF2(&c->cli_buf, 0, srv->srv_netbuf);
469:
470: /* accept client */
471: c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen);
472: if (c->cli_sock == -1) {
473: LOGERR;
474: AIT_FREE_VAL(&c->cli_buf);
475: io_arrayDel(srv->srv_blob.clients, i, 42);
476: goto end;
477: } else
478: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
479:
480: schedRead(TASK_ROOT(task), rxBLOB, c, c->cli_sock, NULL, 0);
481: end:
482: schedReadSelf(task);
483: return NULL;
484: }
485:
486: /* ------------------------------------------------------ */
487:
488: /*
489: * rpc_srv_initBLOBServer() - Init & create BLOB Server
490: *
491: * @srv = RPC server instance
492: * @Port = Port for bind server, if Port == 0 default port is selected
493: * @diskDir = Disk place for BLOB file objects
494: * return: -1 == error or 0 bind and created BLOB server instance
495: */
496: int
497: rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, u_short Port, const char *diskDir)
498: {
499: int n = 1;
500:
501: if (!srv || srv->srv_kill) {
502: rpc_SetErr(EINVAL, "Invalid parameters can`t init BLOB server");
503: return -1;
504: }
505:
506: memset(&srv->srv_blob, 0, sizeof srv->srv_blob);
507: if (access(diskDir, R_OK | W_OK) == -1) {
508: LOGERR;
509: return -1;
510: } else
511: AIT_SET_STR(&srv->srv_blob.dir, diskDir);
512:
513: /* init blob list */
514: TAILQ_INIT(&srv->srv_blob.blobs);
515:
516: srv->srv_blob.server.cli_parent = srv;
517:
518: memcpy(&srv->srv_blob.server.cli_sa, &srv->srv_server.cli_sa, sizeof(io_sockaddr_t));
519: switch (srv->srv_blob.server.cli_sa.sa.sa_family) {
520: case AF_INET:
521: srv->srv_blob.server.cli_sa.sin.sin_port =
522: htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin.sin_port) + 1);
523: break;
524: case AF_INET6:
525: srv->srv_blob.server.cli_sa.sin6.sin6_port =
526: htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin6.sin6_port) + 1);
527: break;
528: case AF_LOCAL:
529: strlcat(srv->srv_blob.server.cli_sa.sun.sun_path, ".blob",
530: sizeof srv->srv_blob.server.cli_sa.sun.sun_path);
531: break;
532: default:
533: AIT_FREE_VAL(&srv->srv_blob.dir);
534: return -1;
535: }
536:
537: /* create BLOB server socket */
538: srv->srv_blob.server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, SOCK_STREAM, 0);
539: if (srv->srv_blob.server.cli_sock == -1) {
540: LOGERR;
541: AIT_FREE_VAL(&srv->srv_blob.dir);
542: return -1;
543: }
544: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
545: LOGERR;
546: close(srv->srv_blob.server.cli_sock);
547: AIT_FREE_VAL(&srv->srv_blob.dir);
548: return -1;
549: }
550: n = srv->srv_netbuf;
551: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
552: LOGERR;
553: close(srv->srv_blob.server.cli_sock);
554: AIT_FREE_VAL(&srv->srv_blob.dir);
555: return -1;
556: }
557: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
558: LOGERR;
559: close(srv->srv_blob.server.cli_sock);
560: AIT_FREE_VAL(&srv->srv_blob.dir);
561: return -1;
562: }
563: if (bind(srv->srv_blob.server.cli_sock, &srv->srv_blob.server.cli_sa.sa,
564: srv->srv_blob.server.cli_sa.sa.sa_len) == -1) {
565: LOGERR;
566: close(srv->srv_blob.server.cli_sock);
567: AIT_FREE_VAL(&srv->srv_blob.dir);
568: return -1;
569: }
570:
571: /* allocate pool for concurent blob clients */
572: srv->srv_blob.clients = io_arrayInit(io_arraySize(srv->srv_clients));
573: if (!srv->srv_blob.clients) {
574: rpc_SetErr(io_GetErrno(), "%s", io_GetError());
575: close(srv->srv_blob.server.cli_sock);
576: AIT_FREE_VAL(&srv->srv_blob.dir);
577: return -1;
578: }
579:
580: /* init blob scheduler */
581: srv->srv_blob.root = schedBegin();
582: if (!srv->srv_blob.root) {
583: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
584: io_arrayDestroy(&srv->srv_blob.clients);
585: close(srv->srv_blob.server.cli_sock);
586: AIT_FREE_VAL(&srv->srv_blob.dir);
587: return -1;
588: }
589:
590: return 0;
591: }
592:
593: /*
594: * rpc_srv_endBLOBServer() - Destroy BLOB server, close all opened sockets and free resources
595: *
596: * @srv = RPC Server instance
597: * return: none
598: */
599: inline void
600: rpc_srv_endBLOBServer(rpc_srv_t * __restrict srv)
601: {
602: if (!srv)
603: return;
604:
605: srv->srv_blob.kill = 1;
606: }
607:
608: /*
609: * rpc_srv_loopBLOBServer() - Execute Main BLOB server loop and wait for clients requests
610: *
611: * @srv = RPC Server instance
612: * return: -1 error or 0 ok, infinite loop ...
613: */
614: int
615: rpc_srv_loopBLOBServer(rpc_srv_t * __restrict srv)
616: {
617: rpc_cli_t *c;
618: register int i;
619: rpc_blob_t *b, *tmp;
620: struct timespec ts = { RPC_SCHED_POLLING, 0 };
621:
622: if (!srv || srv->srv_kill) {
623: rpc_SetErr(EINVAL, "Invalid parameter can`t start BLOB server");
624: return -1;
625: }
626:
627: fcntl(srv->srv_blob.server.cli_sock, F_SETFL,
628: fcntl(srv->srv_blob.server.cli_sock, F_GETFL) | O_NONBLOCK);
629:
630: if (listen(srv->srv_blob.server.cli_sock, io_arraySize(srv->srv_blob.clients)) == -1) {
631: LOGERR;
632: return -1;
633: }
634:
635: if (!schedRead(srv->srv_blob.root, acceptBLOBClients, srv,
636: srv->srv_blob.server.cli_sock, NULL, 0)) {
637: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
638: return -1;
639: }
640:
641: schedPolling(srv->srv_blob.root, &ts, NULL);
642: /* main rpc loop */
643: schedRun(srv->srv_blob.root, &srv->srv_blob.kill);
644:
645: /* close all clients connections & server socket */
646: for (i = 0; i < io_arraySize(srv->srv_blob.clients); i++) {
647: c = io_array(srv->srv_blob.clients, i, rpc_cli_t*);
648: if (c) {
649: shutdown(c->cli_sock, SHUT_RDWR);
650: close(c->cli_sock);
651:
652: schedCancelby(srv->srv_blob.root, taskMAX, CRITERIA_ARG, c, NULL);
653: AIT_FREE_VAL(&c->cli_buf);
654: }
655: io_arrayDel(srv->srv_blob.clients, i, 42);
656: }
657: io_arrayDestroy(&srv->srv_blob.clients);
658:
659: close(srv->srv_blob.server.cli_sock);
660:
661: /* detach blobs */
662: TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) {
663: TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node);
664:
665: rpc_srv_blobFree(srv, b);
666: free(b);
667: }
668:
669: schedEnd(&srv->srv_blob.root);
670: AIT_FREE_VAL(&srv->srv_blob.dir);
671: return 0;
672: }
673:
674:
675: /*
676: * rpc_srv_initServer() - Init & create RPC Server
677: *
678: * @regProgID = ProgramID for authentication & recognition
679: * @regProcID = ProcessID for authentication & recognition
680: * @concurentClients = Concurent clients at same time to this server
681: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
682: * @csHost = Host name or address for bind server, if NULL any address
683: * @Port = Port for bind server, if Port == 0 default port is selected
684: * return: NULL == error or !=NULL bind and created RPC server instance
685: */
686: rpc_srv_t *
687: rpc_srv_initServer(u_int regProgID, u_char regProcID, int concurentClients,
688: int netBuf, const char *csHost, u_short Port)
689: {
690: int n = 1;
691: rpc_srv_t *srv = NULL;
692: io_sockaddr_t sa;
693:
694: if (!concurentClients || !regProgID) {
695: rpc_SetErr(EINVAL, "Invalid parameters can`t init RPC server");
696: return NULL;
697: }
698: if (!io_gethostbyname(csHost, Port, &sa))
699: return NULL;
700: if (!Port)
701: Port = RPC_DEFPORT;
702: if (netBuf < RPC_MIN_BUFSIZ)
703: netBuf = BUFSIZ;
704: else
705: netBuf = io_align(netBuf, 1); /* align netBuf length */
706:
707: #ifdef HAVE_SRANDOMDEV
708: srandomdev();
709: #else
710: time_t tim;
711:
712: srandom((time(&tim) ^ getpid()));
713: #endif
714:
715: srv = malloc(sizeof(rpc_srv_t));
716: if (!srv) {
717: LOGERR;
718: return NULL;
719: } else
720: memset(srv, 0, sizeof(rpc_srv_t));
721:
722: srv->srv_netbuf = netBuf;
723: srv->srv_session.sess_version = RPC_VERSION;
724: srv->srv_session.sess_program = regProgID;
725: srv->srv_session.sess_process = regProcID;
726:
727: srv->srv_server.cli_parent = srv;
728: memcpy(&srv->srv_server.cli_sa, &sa, sizeof srv->srv_server.cli_sa);
729:
730: /* init functions list */
731: TAILQ_INIT(&srv->srv_funcs);
732:
733: /* init scheduler */
734: srv->srv_root = schedBegin();
735: if (!srv->srv_root) {
736: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
737: free(srv);
738: return NULL;
739: }
740:
741: /* init pool for clients */
742: srv->srv_clients = io_arrayInit(concurentClients);
743: if (!srv->srv_clients) {
744: rpc_SetErr(io_GetErrno(), "%s", io_GetError());
745: schedEnd(&srv->srv_root);
746: free(srv);
747: return NULL;
748: }
749:
750: /* create server socket */
751: srv->srv_server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, SOCK_STREAM, 0);
752: if (srv->srv_server.cli_sock == -1) {
753: LOGERR;
754: io_arrayDestroy(&srv->srv_clients);
755: schedEnd(&srv->srv_root);
756: free(srv);
757: return NULL;
758: }
759: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
760: LOGERR;
761: goto err;
762: }
763: n = srv->srv_netbuf;
764: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
765: LOGERR;
766: goto err;
767: }
768: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
769: LOGERR;
770: goto err;
771: }
772: if (bind(srv->srv_server.cli_sock, &srv->srv_server.cli_sa.sa,
773: srv->srv_server.cli_sa.sa.sa_len) == -1) {
774: LOGERR;
775: goto err;
776: }
777:
778: rpc_register_srvPing(srv);
779:
780: return srv;
781: err: /* error condition */
782: close(srv->srv_server.cli_sock);
783: io_arrayDestroy(&srv->srv_clients);
784: schedEnd(&srv->srv_root);
785: free(srv);
786: return NULL;
787: }
788:
789: /*
790: * rpc_srv_endServer() - Destroy RPC server, close all opened sockets and free resources
791: *
792: * @psrv = RPC Server instance
793: * return: none
794: */
795: inline void
796: rpc_srv_endServer(rpc_srv_t ** __restrict psrv)
797: {
798: if (!psrv || !*psrv)
799: return;
800:
801: /* if send kill to blob server */
802: if (!(*psrv)->srv_blob.kill)
803: rpc_srv_endBLOBServer(*psrv);
804:
805: (*psrv)->srv_kill = 1;
806: sleep(RPC_SCHED_POLLING);
807:
808: free(*psrv);
809: *psrv = NULL;
810: }
811:
812: /*
813: * rpc_srv_loopServer() - Execute Main server loop and wait for clients requests
814: *
815: * @srv = RPC Server instance
816: * return: -1 error or 0 ok, infinite loop ...
817: */
818: int
819: rpc_srv_loopServer(rpc_srv_t * __restrict srv)
820: {
821: rpc_cli_t *c;
822: register int i;
823: rpc_func_t *f, *tmp;
824: struct timespec ts = { RPC_SCHED_POLLING, 0 };
825:
826: if (!srv) {
827: rpc_SetErr(EINVAL, "Invalid parameter can`t start RPC server");
828: return -1;
829: }
830:
831: fcntl(srv->srv_server.cli_sock, F_SETFL,
832: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
833:
834: if (listen(srv->srv_server.cli_sock, io_arraySize(srv->srv_clients)) == -1) {
835: LOGERR;
836: return -1;
837: }
838:
839: if (!schedRead(srv->srv_root, acceptClients, srv, srv->srv_server.cli_sock, NULL, 0)) {
840: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
841: return -1;
842: }
843:
844: schedPolling(srv->srv_root, &ts, NULL);
845: /* main rpc loop */
846: schedRun(srv->srv_root, &srv->srv_kill);
847:
848: /* close all clients connections & server socket */
849: for (i = 0; i < io_arraySize(srv->srv_clients); i++) {
850: c = io_array(srv->srv_clients, i, rpc_cli_t*);
851: if (c) {
852: shutdown(c->cli_sock, SHUT_RDWR);
853: close(c->cli_sock);
854:
855: schedCancelby(srv->srv_root, taskMAX, CRITERIA_ARG, c, NULL);
856: io_freeVars(&RPC_RETVARS(c));
857: AIT_FREE_VAL(&c->cli_buf);
858: }
859: io_arrayDel(srv->srv_clients, i, 42);
860: }
861: io_arrayDestroy(&srv->srv_clients);
862:
863: close(srv->srv_server.cli_sock);
864:
865: /* detach exported calls */
866: TAILQ_FOREACH_SAFE(f, &srv->srv_funcs, func_node, tmp) {
867: TAILQ_REMOVE(&srv->srv_funcs, f, func_node);
868:
869: AIT_FREE_VAL(&f->func_name);
870: free(f);
871: }
872:
873: schedEnd(&srv->srv_root);
874: return 0;
875: }
876:
877:
878: /*
879: * rpc_srv_execCall() Execute registered call from RPC server
880: *
881: * @cli = RPC client
882: * @rpc = IN RPC call structure
883: * @funcname = Execute RPC function
884: * @args = IN RPC calling arguments from RPC client
885: * return: -1 error, !=-1 ok
886: */
887: int
888: rpc_srv_execCall(rpc_cli_t * __restrict cli, struct tagRPCCall * __restrict rpc,
889: ait_val_t funcname, array_t * __restrict args)
890: {
891: rpc_callback_t func;
892:
893: if (!cli || !rpc || !AIT_ADDR(&funcname)) {
894: rpc_SetErr(EINVAL, "Invalid parameter can`t exec function");
895: return -1;
896: }
897:
898: func = AIT_GET_LIKE(&funcname, rpc_callback_t);
899: return func(cli, rpc, args);
900: }
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