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 1.9.2.18 2012/05/17 08:42:32 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(s->srv_root, 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: u_char *buf = AIT_GET_BUF(&c->cli_buf);
182: int len, rlen, noreply;
183: u_short crc, off = 0;
184: struct tagRPCCall *rpc;
185:
186: memset(buf, 0, AIT_LEN(&c->cli_buf));
187: rlen = recv(TASK_FD(task), buf, AIT_LEN(&c->cli_buf), 0);
188: if (rlen < 1) {
189: /* close connection */
190: schedEvent(TASK_ROOT(task), closeClient, c, 42, NULL, 0);
191: return NULL;
192: }
193:
194: do {
195: /* check RPC packet */
196: if (rlen < sizeof(struct tagRPCCall)) {
197: rpc_SetErr(ERPCMISMATCH, "Short RPC packet");
198:
199: schedReadSelf(task);
200: return NULL;
201: } else
202: rpc = (struct tagRPCCall*) (buf + off);
203:
204: len = ntohs(rpc->call_len);
205: rlen -= len;
206:
207: /* check integrity of packet */
208: crc = ntohs(rpc->call_crc);
209: rpc->call_crc ^= rpc->call_crc;
210: if (crc != crcFletcher16((u_short*) (buf + off), len / 2)) {
211: rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet");
212:
213: off += len;
214: if (rlen < 1)
215: break;
216: else
217: continue;
218: }
219:
220: noreply = rpc->call_req.flags & RPC_NOREPLY;
221:
222: /* check RPC packet session info */
223: if (rpc_chkPktSession(&rpc->call_session, &s->srv_session)) {
224: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
225: rpc->call_argc ^= rpc->call_argc;
226: rpc->call_rep.ret = RPC_ERROR(-1);
227: rpc->call_rep.eno = RPC_ERROR(errno);
228: } else {
229: /* execute RPC call */
230: schedEvent(TASK_ROOT(task), execCall, TASK_ARG(task), off, NULL, 0);
231: }
232:
233: /* send RPC reply */
234: if (!noreply)
235: schedWrite(TASK_ROOT(task), txPacket, TASK_ARG(task), TASK_FD(task), rpc, len);
236:
237: off += len;
238: } while (rlen > 0);
239:
240: /* lets get next packet */
241: schedReadSelf(task);
242: return NULL;
243: }
244:
245: static void *
246: acceptClients(sched_task_t *task)
247: {
248: rpc_srv_t *srv = TASK_ARG(task);
249: rpc_cli_t *c = NULL;
250: register int i;
251: socklen_t salen = sizeof(io_sockaddr_t);
252:
253: /* check free slots for connect */
254: for (i = 0; i < io_arraySize(srv->srv_clients) &&
255: (c = io_array(srv->srv_clients, i, rpc_cli_t*)); i++);
256: if (c) /* no more free slots! */
257: goto end;
258: c = malloc(sizeof(rpc_cli_t));
259: if (!c) {
260: LOGERR;
261: srv->srv_kill = 1;
262: return NULL;
263: } else {
264: memset(c, 0, sizeof(rpc_cli_t));
265: io_arraySet(srv->srv_clients, i, c);
266: c->cli_id = i;
267: c->cli_parent = srv;
268: }
269:
270: /* alloc empty buffer */
271: AIT_SET_BUF2(&c->cli_buf, 0, srv->srv_netbuf);
272:
273: /* accept client */
274: c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen);
275: if (c->cli_sock == -1) {
276: LOGERR;
277: AIT_FREE_VAL(&c->cli_buf);
278: io_arrayDel(srv->srv_clients, i, 42);
279: goto end;
280: } else
281: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
282:
283: schedRead(TASK_ROOT(task), rxPacket, c, c->cli_sock, NULL, 0);
284: end:
285: schedReadSelf(task);
286: return NULL;
287: }
288:
289: /* ------------------------------------------------------ */
290:
291: static void *
292: closeBLOBClient(sched_task_t *task)
293: {
294: rpc_cli_t *c = TASK_ARG(task);
295: rpc_srv_t *s = c->cli_parent;
296:
297: schedCancelby(s->srv_blob.root, taskMAX, CRITERIA_ARG, TASK_ARG(task), NULL);
298:
299: /* close client socket */
300: if (TASK_VAL(task))
301: shutdown(c->cli_sock, SHUT_RDWR);
302: close(c->cli_sock);
303:
304: /* free buffer */
305: AIT_FREE_VAL(&c->cli_buf);
306:
307: io_arrayDel(s->srv_blob.clients, c->cli_id, 42);
308: return NULL;
309: }
310:
311: static void *
312: txBLOB(sched_task_t *task)
313: {
314: rpc_cli_t *c = TASK_ARG(task);
315: u_char *buf = AIT_GET_BUF(&c->cli_buf);
316: struct tagBLOBHdr *blob = (struct tagBLOBHdr *) buf;
317: int wlen = sizeof(struct tagBLOBHdr);
318:
319: /* calculate CRC */
320: blob->hdr_crc ^= blob->hdr_crc;
321: blob->hdr_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
322:
323: /* send reply */
324: wlen = send(TASK_FD(task), buf, wlen, MSG_NOSIGNAL);
325: if (wlen == -1 || wlen != sizeof(struct tagBLOBHdr)) {
326: /* close blob connection */
327: schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0);
328: }
329:
330: return NULL;
331: }
332:
333: static void *
334: rxBLOB(sched_task_t *task)
335: {
336: rpc_cli_t *c = TASK_ARG(task);
337: rpc_srv_t *s = c->cli_parent;
338: rpc_blob_t *b;
339: u_char *buf = AIT_GET_BUF(&c->cli_buf);
340: struct tagBLOBHdr *blob = (struct tagBLOBHdr *) buf;
341: int rlen;
342: u_short crc;
343:
344: memset(buf, 0, AIT_LEN(&c->cli_buf));
345: rlen = recv(TASK_FD(task), buf, AIT_LEN(&c->cli_buf), 0);
346: if (rlen < 1) {
347: /* close blob connection */
348: schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0);
349: return NULL;
350: }
351:
352: /* check BLOB packet */
353: if (rlen < sizeof(struct tagBLOBHdr)) {
354: rpc_SetErr(ERPCMISMATCH, "Short BLOB packet");
355:
356: schedReadSelf(task);
357: return NULL;
358: }
359:
360: /* check integrity of packet */
361: crc = ntohs(blob->hdr_crc);
362: blob->hdr_crc ^= blob->hdr_crc;
363: if (crc != crcFletcher16((u_short*) buf, rlen / 2)) {
364: rpc_SetErr(ERPCMISMATCH, "Bad CRC BLOB packet");
365:
366: schedReadSelf(task);
367: return NULL;
368: }
369:
370: /* check RPC packet session info */
371: if ((crc = rpc_chkPktSession(&blob->hdr_session, &s->srv_session))) {
372: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
373: blob->hdr_cmd = error;
374: goto end;
375: }
376:
377: /* Go to proceed packet ... */
378: switch (blob->hdr_cmd) {
379: case get:
380: if (!(b = rpc_srv_getBLOB(s, ntohl(blob->hdr_var)))) {
381: rpc_SetErr(EINVAL, "Var=%x not found", ntohl(blob->hdr_var));
382: blob->hdr_cmd = no;
383: blob->hdr_ret = RPC_ERROR(-1);
384: break;
385: } else
386: blob->hdr_len = htonl(b->blob_len);
387:
388: if (rpc_srv_blobMap(s, b) != -1) {
389: /* deliver BLOB variable to client */
390: blob->hdr_ret = htonl(rpc_srv_sendBLOB(c, b));
391: rpc_srv_blobUnmap(b);
392: } else {
393: blob->hdr_cmd = error;
394: blob->hdr_ret = RPC_ERROR(-1);
395: }
396: break;
397: case set:
398: if ((b = rpc_srv_registerBLOB(s, ntohl(blob->hdr_len)))) {
399: /* set new BLOB variable for reply :) */
400: blob->hdr_var = htonl(b->blob_var);
401:
402: /* receive BLOB from client */
403: blob->hdr_ret = htonl(rpc_srv_recvBLOB(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 unset:
411: if (rpc_srv_unregisterBLOB(s, blob->hdr_var) == -1) {
412: blob->hdr_cmd = error;
413: blob->hdr_ret = RPC_ERROR(-1);
414: }
415: break;
416: default:
417: rpc_SetErr(EPROCUNAVAIL, "Unsupported BLOB command %d", blob->hdr_cmd);
418: blob->hdr_cmd = error;
419: blob->hdr_ret = RPC_ERROR(-1);
420: }
421:
422: end:
423: schedWrite(TASK_ROOT(task), txBLOB, TASK_ARG(task), TASK_FD(task), NULL, 0);
424: schedReadSelf(task);
425: return NULL;
426: }
427:
428: static void *
429: acceptBLOBClients(sched_task_t *task)
430: {
431: rpc_srv_t *srv = TASK_ARG(task);
432: rpc_cli_t *c = NULL;
433: register int i;
434: socklen_t salen = sizeof(io_sockaddr_t);
435:
436: /* check free slots for connect */
437: for (i = 0; i < io_arraySize(srv->srv_blob.clients) &&
438: (c = io_array(srv->srv_blob.clients, i, rpc_cli_t*)); i++);
439: if (c) /* no more free slots! */
440: goto end;
441: c = malloc(sizeof(rpc_cli_t));
442: if (!c) {
443: LOGERR;
444: srv->srv_kill = srv->srv_blob.kill = 1;
445: return NULL;
446: } else {
447: memset(c, 0, sizeof(rpc_cli_t));
448: io_arraySet(srv->srv_blob.clients, i, c);
449: c->cli_id = i;
450: c->cli_parent = srv;
451: }
452:
453: /* alloc empty buffer */
454: AIT_SET_BUF2(&c->cli_buf, 0, srv->srv_netbuf);
455:
456: /* accept client */
457: c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen);
458: if (c->cli_sock == -1) {
459: LOGERR;
460: AIT_FREE_VAL(&c->cli_buf);
461: io_arrayDel(srv->srv_blob.clients, i, 42);
462: goto end;
463: } else
464: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
465:
466: schedRead(TASK_ROOT(task), rxBLOB, c, c->cli_sock, NULL, 0);
467: end:
468: schedReadSelf(task);
469: return NULL;
470: }
471:
472: /* ------------------------------------------------------ */
473:
474: /*
475: * rpc_srv_initBLOBServer() - Init & create BLOB Server
476: *
477: * @srv = RPC server instance
478: * @Port = Port for bind server, if Port == 0 default port is selected
479: * @diskDir = Disk place for BLOB file objects
480: * return: -1 == error or 0 bind and created BLOB server instance
481: */
482: int
483: rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, u_short Port, const char *diskDir)
484: {
485: int n = 1;
486:
487: if (!srv || srv->srv_kill) {
488: rpc_SetErr(EINVAL, "Invalid parameters can`t init BLOB server");
489: return -1;
490: }
491:
492: memset(&srv->srv_blob, 0, sizeof srv->srv_blob);
493: if (access(diskDir, R_OK | W_OK) == -1) {
494: LOGERR;
495: return -1;
496: } else
497: AIT_SET_STR(&srv->srv_blob.dir, diskDir);
498:
499: /* init blob list */
500: TAILQ_INIT(&srv->srv_blob.blobs);
501:
502: srv->srv_blob.server.cli_parent = srv;
503:
504: memcpy(&srv->srv_blob.server.cli_sa, &srv->srv_server.cli_sa, sizeof(io_sockaddr_t));
505: switch (srv->srv_blob.server.cli_sa.sa.sa_family) {
506: case AF_INET:
507: srv->srv_blob.server.cli_sa.sin.sin_port =
508: htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin.sin_port) + 1);
509: break;
510: case AF_INET6:
511: srv->srv_blob.server.cli_sa.sin6.sin6_port =
512: htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin6.sin6_port) + 1);
513: break;
514: case AF_LOCAL:
515: strlcat(srv->srv_blob.server.cli_sa.sun.sun_path, ".blob",
516: sizeof srv->srv_blob.server.cli_sa.sun.sun_path);
517: break;
518: default:
519: AIT_FREE_VAL(&srv->srv_blob.dir);
520: return -1;
521: }
522:
523: /* create BLOB server socket */
524: srv->srv_blob.server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, SOCK_STREAM, 0);
525: if (srv->srv_blob.server.cli_sock == -1) {
526: LOGERR;
527: AIT_FREE_VAL(&srv->srv_blob.dir);
528: return -1;
529: }
530: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
531: LOGERR;
532: close(srv->srv_blob.server.cli_sock);
533: AIT_FREE_VAL(&srv->srv_blob.dir);
534: return -1;
535: }
536: n = srv->srv_netbuf;
537: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
538: LOGERR;
539: close(srv->srv_blob.server.cli_sock);
540: AIT_FREE_VAL(&srv->srv_blob.dir);
541: return -1;
542: }
543: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
544: LOGERR;
545: close(srv->srv_blob.server.cli_sock);
546: AIT_FREE_VAL(&srv->srv_blob.dir);
547: return -1;
548: }
549: if (bind(srv->srv_blob.server.cli_sock, &srv->srv_blob.server.cli_sa.sa,
550: srv->srv_blob.server.cli_sa.sa.sa_len) == -1) {
551: LOGERR;
552: close(srv->srv_blob.server.cli_sock);
553: AIT_FREE_VAL(&srv->srv_blob.dir);
554: return -1;
555: }
556:
557: /* allocate pool for concurent blob clients */
558: srv->srv_blob.clients = io_arrayInit(io_arraySize(srv->srv_clients));
559: if (!srv->srv_blob.clients) {
560: rpc_SetErr(io_GetErrno(), "%s", io_GetError());
561: close(srv->srv_blob.server.cli_sock);
562: AIT_FREE_VAL(&srv->srv_blob.dir);
563: return -1;
564: }
565:
566: /* init blob scheduler */
567: srv->srv_blob.root = schedBegin();
568: if (!srv->srv_blob.root) {
569: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
570: io_arrayDestroy(&srv->srv_blob.clients);
571: close(srv->srv_blob.server.cli_sock);
572: AIT_FREE_VAL(&srv->srv_blob.dir);
573: return -1;
574: }
575:
576: return 0;
577: }
578:
579: /*
580: * rpc_srv_endBLOBServer() - Destroy BLOB server, close all opened sockets and free resources
581: *
582: * @srv = RPC Server instance
583: * return: none
584: */
585: void
586: rpc_srv_endBLOBServer(rpc_srv_t * __restrict srv)
587: {
588: rpc_cli_t *c;
589: register int i;
590: rpc_blob_t *b, *tmp;
591:
592: if (!srv)
593: return;
594:
595: /* close all clients connections & server socket */
596: for (i = 0; i < io_arraySize(srv->srv_blob.clients); i++) {
597: c = io_array(srv->srv_blob.clients, i, rpc_cli_t*);
598: if (c) {
599: shutdown(c->cli_sock, SHUT_RDWR);
600: close(c->cli_sock);
601:
602: io_arrayDel(srv->srv_blob.clients, i, 42);
603: }
604: }
605: io_arrayDestroy(&srv->srv_blob.clients);
606:
607: close(srv->srv_blob.server.cli_sock);
608:
609: /* detach blobs */
610: TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) {
611: TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node);
612:
613: rpc_srv_blobFree(srv, b);
614: free(b);
615: }
616:
617: schedEnd(&srv->srv_blob.root);
618: AIT_FREE_VAL(&srv->srv_blob.dir);
619:
620: srv->srv_blob.kill = 1;
621: }
622:
623: /*
624: * rpc_srv_loopBLOBServer() - Execute Main BLOB server loop and wait for clients requests
625: *
626: * @srv = RPC Server instance
627: * return: -1 error or 0 ok, infinite loop ...
628: */
629: int
630: rpc_srv_loopBLOBServer(rpc_srv_t * __restrict srv)
631: {
632: if (!srv || srv->srv_kill) {
633: rpc_SetErr(EINVAL, "Invalid parameter can`t start BLOB server");
634: return -1;
635: }
636:
637: fcntl(srv->srv_blob.server.cli_sock, F_SETFL,
638: fcntl(srv->srv_blob.server.cli_sock, F_GETFL) | O_NONBLOCK);
639:
640: if (listen(srv->srv_blob.server.cli_sock, io_arraySize(srv->srv_blob.clients)) == -1) {
641: LOGERR;
642: return -1;
643: }
644:
645: if (!schedRead(srv->srv_blob.root, acceptBLOBClients, srv,
646: srv->srv_blob.server.cli_sock, NULL, 0)) {
647: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
648: return -1;
649: }
650:
651: #if 0
652: for (c = srv->srv_blob.clients, i = 0; i < srv->srv_numcli && c; i++, c++)
653: if (!c->cli_sa.sa.sa_family)
654: break;
655: if (i >= srv->srv_numcli) {
656: #ifdef HAVE_PTHREAD_YIELD
657: pthread_yield();
658: #endif
659: usleep(1000000);
660: continue;
661: }
662:
663: c->cli_sock = accept(srv->srv_blob.server.cli_sock, &c->cli_sa.sa, &salen);
664: if (c->cli_sock == -1) {
665: LOGERR;
666: continue;
667: } else
668: c->cli_parent = srv;
669: }
670: #endif
671:
672: /* main rpc loop */
673: schedRun(srv->srv_blob.root, &srv->srv_blob.kill);
674: return 0;
675: }
676:
677:
678: /*
679: * rpc_srv_initServer() - Init & create RPC Server
680: *
681: * @regProgID = ProgramID for authentication & recognition
682: * @regProcID = ProcessID for authentication & recognition
683: * @concurentClients = Concurent clients at same time to this server
684: * @netBuf = Network buffer length, if =0 == BUFSIZ (also meaning max RPC packet)
685: * @csHost = Host name or address for bind server, if NULL any address
686: * @Port = Port for bind server, if Port == 0 default port is selected
687: * return: NULL == error or !=NULL bind and created RPC server instance
688: */
689: rpc_srv_t *
690: rpc_srv_initServer(u_int regProgID, u_char regProcID, int concurentClients,
691: int netBuf, const char *csHost, u_short Port)
692: {
693: int n = 1;
694: rpc_srv_t *srv = NULL;
695: io_sockaddr_t sa;
696:
697: if (!concurentClients || !regProgID) {
698: rpc_SetErr(EINVAL, "Invalid parameters can`t init RPC server");
699: return NULL;
700: }
701: if (!io_gethostbyname(csHost, Port, &sa))
702: return NULL;
703: if (!Port)
704: Port = RPC_DEFPORT;
705: if (!netBuf)
706: netBuf = BUFSIZ;
707: else
708: netBuf = io_align(netBuf, 1); /* align netBuf length */
709:
710: #ifdef HAVE_SRANDOMDEV
711: srandomdev();
712: #else
713: time_t tim;
714:
715: srandom((time(&tim) ^ getpid()));
716: #endif
717:
718: srv = malloc(sizeof(rpc_srv_t));
719: if (!srv) {
720: LOGERR;
721: return NULL;
722: } else
723: memset(srv, 0, sizeof(rpc_srv_t));
724:
725: srv->srv_netbuf = netBuf;
726: srv->srv_session.sess_version = RPC_VERSION;
727: srv->srv_session.sess_program = regProgID;
728: srv->srv_session.sess_process = regProcID;
729:
730: srv->srv_server.cli_parent = srv;
731: memcpy(&srv->srv_server.cli_sa, &sa, sizeof srv->srv_server.cli_sa);
732:
733: /* init functions list */
734: TAILQ_INIT(&srv->srv_funcs);
735:
736: /* init scheduler */
737: srv->srv_root = schedBegin();
738: if (!srv->srv_root) {
739: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
740: free(srv);
741: return NULL;
742: }
743:
744: /* init pool for clients */
745: srv->srv_clients = io_arrayInit(concurentClients);
746: if (!srv->srv_clients) {
747: rpc_SetErr(io_GetErrno(), "%s", io_GetError());
748: schedEnd(&srv->srv_root);
749: free(srv);
750: return NULL;
751: }
752:
753: /* create server socket */
754: srv->srv_server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, SOCK_STREAM, 0);
755: if (srv->srv_server.cli_sock == -1) {
756: LOGERR;
757: io_arrayDestroy(&srv->srv_clients);
758: schedEnd(&srv->srv_root);
759: free(srv);
760: return NULL;
761: }
762: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
763: LOGERR;
764: goto err;
765: }
766: n = srv->srv_netbuf;
767: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
768: LOGERR;
769: goto err;
770: }
771: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
772: LOGERR;
773: goto err;
774: }
775: if (bind(srv->srv_server.cli_sock, &srv->srv_server.cli_sa.sa,
776: srv->srv_server.cli_sa.sa.sa_len) == -1) {
777: LOGERR;
778: goto err;
779: }
780:
781: rpc_register_srvPing(srv);
782:
783: return srv;
784: err: /* error condition */
785: close(srv->srv_server.cli_sock);
786: io_arrayDestroy(&srv->srv_clients);
787: schedEnd(&srv->srv_root);
788: free(srv);
789: return NULL;
790: }
791:
792: /*
793: * rpc_srv_endServer() - Destroy RPC server, close all opened sockets and free resources
794: *
795: * @psrv = RPC Server instance
796: * return: none
797: */
798: void
799: rpc_srv_endServer(rpc_srv_t ** __restrict psrv)
800: {
801: rpc_cli_t *c;
802: register int i;
803: rpc_func_t *f, *tmp;
804:
805: if (!psrv || !*psrv)
806: return;
807:
808: if (!(*psrv)->srv_blob.kill)
809: rpc_srv_endBLOBServer(*psrv);
810:
811: /* close all clients connections & server socket */
812: for (i = 0; i < io_arraySize((*psrv)->srv_clients); i++) {
813: c = io_array((*psrv)->srv_clients, i, rpc_cli_t*);
814: if (c) {
815: shutdown(c->cli_sock, SHUT_RDWR);
816: close(c->cli_sock);
817:
818: io_arrayDel((*psrv)->srv_clients, i, 42);
819: }
820: }
821: io_arrayDestroy(&(*psrv)->srv_clients);
822:
823: close((*psrv)->srv_server.cli_sock);
824:
825: /* detach exported calls */
826: TAILQ_FOREACH_SAFE(f, &(*psrv)->srv_funcs, func_node, tmp) {
827: TAILQ_REMOVE(&(*psrv)->srv_funcs, f, func_node);
828:
829: io_freeVars(&f->func_vars);
830: AIT_FREE_VAL(&f->func_name);
831: free(f);
832: }
833:
834: schedEnd(&(*psrv)->srv_root);
835: free(*psrv);
836: *psrv = NULL;
837: }
838:
839: /*
840: * rpc_srv_loopServer() - Execute Main server loop and wait for clients requests
841: *
842: * @srv = RPC Server instance
843: * return: -1 error or 0 ok, infinite loop ...
844: */
845: int
846: rpc_srv_loopServer(rpc_srv_t * __restrict srv)
847: {
848: if (!srv) {
849: rpc_SetErr(EINVAL, "Invalid parameter can`t start RPC server");
850: return -1;
851: }
852:
853: fcntl(srv->srv_server.cli_sock, F_SETFL,
854: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
855:
856: if (listen(srv->srv_server.cli_sock, io_arraySize(srv->srv_clients)) == -1) {
857: LOGERR;
858: return -1;
859: }
860:
861: if (!schedRead(srv->srv_root, acceptClients, srv, srv->srv_server.cli_sock, NULL, 0)) {
862: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
863: return -1;
864: }
865:
866: /* main rpc loop */
867: schedRun(srv->srv_root, &srv->srv_kill);
868: return 0;
869: }
870:
871:
872: /*
873: * rpc_srv_execCall() Execute registered call from RPC server
874: *
875: * @call = Register RPC call
876: * @rpc = IN RPC call structure
877: * @args = IN RPC calling arguments from RPC client
878: * return: -1 error, !=-1 ok
879: */
880: int
881: rpc_srv_execCall(rpc_func_t * __restrict call, struct tagRPCCall * __restrict rpc,
882: array_t * __restrict args)
883: {
884: rpc_callback_t func;
885:
886: if (!call || !rpc || !call->func_parent || !AIT_ADDR(&call->func_name)) {
887: rpc_SetErr(EINVAL, "Invalid parameter can`t exec function");
888: return -1;
889: }
890:
891: func = AIT_GET_LIKE(&call->func_name, rpc_callback_t);
892: return func(call, rpc, args);
893: }
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