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 1.9.2.9 2012/05/16 07:24:08 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->call_argc ^= rpc->call_argc;
86: rpc->call_rep.ret = RPC_ERROR(-1);
87: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
88: } else {
89: rpc->call_argc = htons(io_arraySize(f->func_vars));
90: /* Go Encapsulate variables */
91: ret = io_vars2buffer(buf + wlen, sizeof buf - wlen, f->func_vars);
92: /* Free return values */
93: io_clrVars(f->func_vars);
94: if (ret == -1) {
95: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
96: rpc->call_argc ^= rpc->call_argc;
97: rpc->call_rep.ret = RPC_ERROR(-1);
98: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
99: } else
100: wlen += ret;
101: }
102: }
103:
104: rpc->call_len = htons(wlen);
105:
106: /* calculate CRC */
107: rpc->call_crc ^= rpc->call_crc;
108: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
109:
110: /* send reply */
111: ret = send(TASK_FD(task), buf, wlen, MSG_NOSIGNAL);
112: if (ret == -1 || ret != wlen) {
113: /* close connection */
114: schedEvent(TASK_ROOT(task), closeClient, c, 42, NULL, 0);
115: }
116:
117: return NULL;
118: }
119:
120: static void *
121: execCall(sched_task_t *task)
122: {
123: rpc_cli_t *c = TASK_ARG(task);
124: rpc_srv_t *s = c->cli_parent;
125: rpc_func_t *f = NULL;
126: array_t *arr = NULL;
127: u_char *buf = AIT_GET_BUF(&c->cli_buf) + TASK_VAL(task);
128: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
129: int argc = ntohs(rpc->call_argc);
130:
131: /* Go decapsulate variables ... */
132: if (argc) {
133: arr = io_buffer2vars(buf + sizeof(struct tagRPCCall),
134: AIT_LEN(&c->cli_buf) - TASK_VAL(task) - sizeof(struct tagRPCCall),
135: argc, 1);
136: if (!arr) {
137: rpc_SetErr(ERPCMISMATCH, "#%d - %s", io_GetErrno(), io_GetError());
138: rpc->call_argc ^= rpc->call_argc;
139: rpc->call_rep.ret = RPC_ERROR(-1);
140: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
141: return NULL;
142: }
143: } else
144: arr = NULL;
145:
146: if (!(f = rpc_srv_getCall(s, ntohs(rpc->call_tag)))) {
147: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
148: rpc->call_argc ^= rpc->call_argc;
149: rpc->call_rep.ret = RPC_ERROR(-1);
150: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
151: } else {
152: /* if client doesn't want reply */
153: argc = rpc->call_req.flags & RPC_NOREPLY;
154: rpc->call_rep.ret = RPC_ERROR(rpc_srv_execCall(f, rpc, arr));
155: if (rpc->call_rep.ret == htonl(-1)) {
156: rpc->call_rep.eno = RPC_ERROR(errno);
157: rpc->call_argc ^= rpc->call_argc;
158: } else {
159: rpc->call_rep.eno ^= rpc->call_rep.eno;
160: if (argc) {
161: /* without reply */
162: io_clrVars(f->func_vars);
163: rpc->call_argc ^= rpc->call_argc;
164: } else {
165: /* reply */
166: rpc->call_argc = htons(io_arraySize(f->func_vars));
167: }
168: }
169: }
170:
171: if (arr)
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, 0, NULL, 0);
191: return NULL;
192: }
193:
194: do {
195: /* check RPC packet */
196: if (rlen < sizeof(struct tagRPCCall)) {
197: rpc_SetErr(ERPCMISMATCH, "Too 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 = kill;
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(srv->srv_server.cli_sock, &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: #if 0
290: static void *
291: txBLOB(sched_task_t *task)
292: {
293: u_char *buf = TASK_DATA(task);
294: struct tagBLOBHdr *blob = (struct tagBLOBHdr *) buf;
295: int wlen = sizeof(struct tagBLOBHdr);
296:
297: /* calculate CRC */
298: blob->hdr_crc ^= blob->hdr_crc;
299: blob->hdr_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
300:
301: /* send reply */
302: wlen = send(TASK_FD(task), buf, wlen, 0);
303: if (wlen == -1)
304: LOGERR;
305: else if (wlen != sizeof(struct tagBLOBHdr))
306: rpc_SetErr(EPROCUNAVAIL, "RPC reply, should be send %d bytes, "
307: "really sended %d bytes", sizeof(struct tagBLOBHdr), wlen);
308:
309: return NULL;
310: }
311:
312: static void *
313: rxBLOB(sched_task_t *task)
314: {
315: rpc_cli_t *c = TASK_ARG(task);
316: rpc_srv_t *s = c->cli_parent;
317: rpc_blob_t *b;
318: u_char *buf = TASK_DATA(task);
319: struct tagBLOBHdr *blob = (struct tagBLOBHdr *) buf;
320: int rlen;
321: u_short crc;
322: struct timespec ts;
323:
324: /* check for disable service at this moment? */
325: if (!s || s->srv_blob.state == disable) {
326: usleep(100000);
327: #ifdef HAVE_PTHREAD_YIELD
328: pthread_yield();
329: #endif
330: schedRead(TASK_ROOT(task), rxBLOB, TASK_ARG(task), TASK_FD(task),
331: TASK_DATA(task), TASK_DATLEN(task));
332: return NULL;
333: }
334:
335: memset(buf, 0, TASK_DATLEN(task));
336: rlen = recv(TASK_FD(task), buf, TASK_DATLEN(task), 0);
337: if (rlen == -1) {
338: LOGERR;
339: c->cli_kill = kill;
340: return NULL;
341: } else if (!rlen) { /* receive EOF */
342: c->cli_kill = kill;
343: return NULL;
344: }
345:
346: if (rlen < sizeof(struct tagBLOBHdr)) {
347: rpc_SetErr(ERPCMISMATCH, "Too short BLOB packet");
348: schedRead(TASK_ROOT(task), rxBLOB, TASK_ARG(task), TASK_FD(task),
349: TASK_DATA(task), TASK_DATLEN(task));
350: return NULL;
351: }
352:
353: /* check integrity of packet */
354: crc = ntohs(blob->hdr_crc);
355: blob->hdr_crc ^= blob->hdr_crc;
356: if (crc != crcFletcher16((u_short*) buf, rlen / 2)) {
357: rpc_SetErr(ERPCMISMATCH, "Bad CRC BLOB packet");
358: schedRead(TASK_ROOT(task), rxBLOB, TASK_ARG(task), TASK_FD(task),
359: TASK_DATA(task), TASK_DATLEN(task));
360: return NULL;
361: }
362:
363: /* check RPC packet session info */
364: if ((crc = rpc_chkPktSession(&blob->hdr_session, &s->srv_session))) {
365: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
366: blob->hdr_cmd = error;
367: goto end;
368: } else {
369: /* change socket timeout from last packet */
370: ts.tv_sec = blob->hdr_session.sess_timeout;
371: ts.tv_nsec = 0;
372: schedPolling(TASK_ROOT(task), &ts, NULL);
373: }
374:
375: /* Go to proceed packet ... */
376: switch (blob->hdr_cmd) {
377: case get:
378: if (!(b = rpc_srv_getBLOB(s, ntohl(blob->hdr_var)))) {
379: rpc_SetErr(EINVAL, "Var=%x not found", ntohl(blob->hdr_var));
380: blob->hdr_cmd = no;
381: blob->hdr_ret = RPC_ERROR(-1);
382: break;
383: } else
384: blob->hdr_len = htonl(b->blob_len);
385:
386: if (rpc_srv_blobMap(s, b) != -1) {
387: /* deliver BLOB variable to client */
388: blob->hdr_ret = htonl(rpc_srv_sendBLOB(c, b));
389: rpc_srv_blobUnmap(b);
390: } else {
391: blob->hdr_cmd = error;
392: blob->hdr_ret = RPC_ERROR(-1);
393: }
394: break;
395: case set:
396: if ((b = rpc_srv_registerBLOB(s, ntohl(blob->hdr_len)))) {
397: /* set new BLOB variable for reply :) */
398: blob->hdr_var = htonl(b->blob_var);
399:
400: /* receive BLOB from client */
401: blob->hdr_ret = htonl(rpc_srv_recvBLOB(c, b));
402: rpc_srv_blobUnmap(b);
403: } else {
404: blob->hdr_cmd = error;
405: blob->hdr_ret = RPC_ERROR(-1);
406: }
407: break;
408: case unset:
409: if (rpc_srv_unregisterBLOB(s, blob->hdr_var) == -1) {
410: blob->hdr_cmd = error;
411: blob->hdr_ret = RPC_ERROR(-1);
412: }
413: break;
414: default:
415: rpc_SetErr(EPROCUNAVAIL, "Unsupported BLOB command %d", blob->hdr_cmd);
416: blob->hdr_cmd = error;
417: blob->hdr_ret = RPC_ERROR(-1);
418: }
419:
420: end:
421: schedWrite(TASK_ROOT(task), txBLOB, TASK_ARG(task), TASK_FD(task),
422: TASK_DATA(task), TASK_DATLEN(task));
423: schedRead(TASK_ROOT(task), rxBLOB, TASK_ARG(task), TASK_FD(task),
424: TASK_DATA(task), TASK_DATLEN(task));
425: return NULL;
426: }
427:
428: static void *
429: rpc_srv_dispatchVars(void *arg)
430: {
431: rpc_cli_t *c = arg;
432: rpc_srv_t *s;
433: sched_root_task_t *root;
434: u_char *buf;
435: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
436:
437: if (!arg) {
438: rpc_SetErr(EINVAL, "Invalid parameter can`t procced BLOB");
439: return NULL;
440: } else
441: s = c->cli_parent;
442:
443: /* allocate net buffer */
444: buf = malloc(sizeof(struct tagBLOBHdr));
445: if (!buf) {
446: LOGERR;
447: return NULL;
448: }
449:
450: root = schedBegin();
451: if (!root) {
452: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
453: free(buf);
454: return NULL;
455: } else {
456: schedTermCondition(root, kill);
457: schedPolling(root, &ts, NULL);
458: }
459:
460: schedRead(root, rxBLOB, c, c->cli_sock, buf, sizeof(struct tagBLOBHdr));
461:
462: schedRun(root, (void*) &c->cli_kill);
463: schedEnd(&root);
464:
465: shutdown(c->cli_sock, SHUT_RDWR);
466: close(c->cli_sock);
467: memset(c, 0, sizeof(rpc_cli_t));
468: free(buf);
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: io_sockaddr_t sa;
487:
488: if (!srv) {
489: rpc_SetErr(EINVAL, "Invalid parameters can`t init BLOB server");
490: return -1;
491: }
492: if (srv->srv_blob.state) {
493: rpc_SetErr(EPERM, "Already started BLOB server!");
494: return 0;
495: }
496:
497: memset(&srv->srv_blob, 0, sizeof srv->srv_blob);
498: if (access(diskDir, R_OK | W_OK) == -1) {
499: LOGERR;
500: return -1;
501: } else
502: AIT_SET_STR(&srv->srv_blob.dir, diskDir);
503:
504: srv->srv_blob.server.cli_tid = pthread_self();
505: srv->srv_blob.server.cli_parent = srv;
506:
507: memcpy(&sa, &srv->srv_server.cli_sa, sizeof sa);
508: switch (sa.sa.sa_family) {
509: case AF_INET:
510: sa.sin.sin_port = htons(Port ? Port : ntohs(sa.sin.sin_port) + 1);
511: break;
512: case AF_INET6:
513: sa.sin6.sin6_port = htons(Port ? Port : ntohs(sa.sin6.sin6_port) + 1);
514: break;
515: case AF_LOCAL:
516: strlcat(sa.sun.sun_path, ".blob", sizeof sa.sun.sun_path);
517: break;
518: default:
519: AIT_FREE_VAL(&srv->srv_blob.dir);
520: return -1;
521: }
522: memcpy(&srv->srv_blob.server.cli_sa, &sa, sizeof sa);
523:
524: /* create BLOB server socket */
525: srv->srv_blob.server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, SOCK_STREAM, 0);
526: if (srv->srv_blob.server.cli_sock == -1) {
527: LOGERR;
528: AIT_FREE_VAL(&srv->srv_blob.dir);
529: return -1;
530: }
531: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
532: LOGERR;
533: close(srv->srv_blob.server.cli_sock);
534: AIT_FREE_VAL(&srv->srv_blob.dir);
535: return -1;
536: }
537: n = srv->srv_netbuf;
538: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
539: LOGERR;
540: close(srv->srv_blob.server.cli_sock);
541: AIT_FREE_VAL(&srv->srv_blob.dir);
542: return -1;
543: }
544: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_RCVBUF, &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: if (bind(srv->srv_blob.server.cli_sock, &srv->srv_blob.server.cli_sa.sa,
551: srv->srv_blob.server.cli_sa.sa.sa_len) == -1) {
552: LOGERR;
553: close(srv->srv_blob.server.cli_sock);
554: AIT_FREE_VAL(&srv->srv_blob.dir);
555: return -1;
556: }
557:
558: /* allocate pool for concurent clients */
559: srv->srv_blob.clients = calloc(srv->srv_numcli, sizeof(rpc_cli_t));
560: if (!srv->srv_blob.clients) {
561: LOGERR;
562: close(srv->srv_blob.server.cli_sock);
563: AIT_FREE_VAL(&srv->srv_blob.dir);
564: return -1;
565: } else
566: memset(srv->srv_blob.clients, 0, srv->srv_numcli * sizeof(rpc_cli_t));
567:
568: srv->srv_blob.state = enable; /* enable BLOB */
569: return 0;
570: }
571:
572: /*
573: * rpc_srv_endBLOBServer() - Destroy BLOB server, close all opened sockets and free resources
574: *
575: * @srv = RPC Server instance
576: * return: none
577: */
578: void
579: rpc_srv_endBLOBServer(rpc_srv_t * __restrict srv)
580: {
581: rpc_cli_t *c;
582: register int i;
583: rpc_blob_t *f;
584:
585: if (!srv || srv->srv_blob.state == disable)
586: return;
587: else
588: srv->srv_blob.state = kill;
589:
590: rpc_srv_unregisterCall(srv, NULL, CALL_BLOBSHUTDOWN);
591: rpc_srv_unregisterCall(srv, NULL, CALL_BLOBCLIENTS);
592: rpc_srv_unregisterCall(srv, NULL, CALL_BLOBVARS);
593: rpc_srv_unregisterCall(srv, NULL, CALL_BLOBSTATE);
594:
595: /* close all clients connections & server socket */
596: for (i = 0, c = srv->srv_blob.clients; i < srv->srv_numcli && c; i++, c++)
597: if (c->cli_sa.sa.sa_family)
598: shutdown(c->cli_sock, SHUT_RDWR);
599: close(srv->srv_blob.server.cli_sock);
600:
601: if (srv->srv_blob.clients) {
602: free(srv->srv_blob.clients);
603: srv->srv_blob.clients = NULL;
604: }
605:
606: /* detach blobs */
607: while ((f = srv->srv_blob.blobs)) {
608: srv->srv_blob.blobs = f->blob_next;
609: rpc_srv_blobFree(srv, f);
610: free(f);
611: }
612:
613: AIT_FREE_VAL(&srv->srv_blob.dir);
614:
615: /* at final, save disable BLOB service state */
616: srv->srv_blob.state = disable;
617: }
618:
619: /*
620: * rpc_srv_loopBLOB() - Execute Main BLOB server loop and wait for clients requests
621: *
622: * @srv = RPC Server instance
623: * return: -1 error or 0 ok, infinite loop ...
624: */
625: int
626: rpc_srv_loopBLOB(rpc_srv_t * __restrict srv)
627: {
628: socklen_t salen = sizeof(io_sockaddr_t);
629: register int i;
630: rpc_cli_t *c;
631: int ret;
632: pthread_attr_t attr;
633: struct pollfd pfd;
634:
635: if (!srv || srv->srv_blob.state == kill) {
636: rpc_SetErr(EINVAL, "Invalid parameter can`t start BLOB server");
637: return -1;
638: }
639:
640: if (listen(srv->srv_blob.server.cli_sock, SOMAXCONN) == -1) {
641: LOGERR;
642: return -1;
643: } else
644: fcntl(srv->srv_blob.server.cli_sock, F_SETFL,
645: fcntl(srv->srv_blob.server.cli_sock, F_GETFL) | O_NONBLOCK);
646:
647: pthread_attr_init(&attr);
648: pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
649:
650: pfd.fd = srv->srv_blob.server.cli_sock;
651: pfd.events = POLLIN | POLLPRI;
652: /* main BLOB loop */
653: while (srv->srv_blob.state != kill && srv->srv_kill != kill) {
654: for (c = srv->srv_blob.clients, i = 0; i < srv->srv_numcli && c; i++, c++)
655: if (!c->cli_sa.sa.sa_family)
656: break;
657: if (i >= srv->srv_numcli) {
658: #ifdef HAVE_PTHREAD_YIELD
659: pthread_yield();
660: #endif
661: usleep(1000000);
662: continue;
663: }
664:
665: if ((ret = poll(&pfd, 1, srv->srv_session.sess_timeout * 1000)) == -1 ||
666: pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
667: LOGERR;
668: ret = 1;
669: break;
670: } else if (!ret)
671: continue;
672:
673: c->cli_sock = accept(srv->srv_blob.server.cli_sock, &c->cli_sa.sa, &salen);
674: if (c->cli_sock == -1) {
675: LOGERR;
676: continue;
677: } else
678: c->cli_parent = srv;
679:
680: /* spawn dispatch thread for BLOB client */
681: c->cli_kill = enable;
682: if (pthread_create(&c->cli_tid, &attr, rpc_srv_dispatchVars, c)) {
683: LOGERR;
684: continue;
685: }
686: }
687:
688: srv->srv_blob.state = kill;
689:
690: pthread_attr_destroy(&attr);
691: return 0;
692: }
693: #endif
694:
695:
696: /*
697: * rpc_srv_initServer() - Init & create RPC Server
698: *
699: * @regProgID = ProgramID for authentication & recognition
700: * @regProcID = ProcessID for authentication & recognition
701: * @concurentClients = Concurent clients at same time to this server
702: * @netBuf = Network buffer length, if =0 == BUFSIZ (also meaning max RPC packet)
703: * @csHost = Host name or address for bind server, if NULL any address
704: * @Port = Port for bind server, if Port == 0 default port is selected
705: * return: NULL == error or !=NULL bind and created RPC server instance
706: */
707: rpc_srv_t *
708: rpc_srv_initServer(u_int regProgID, u_char regProcID, int concurentClients,
709: int netBuf, const char *csHost, u_short Port)
710: {
711: int n = 1;
712: rpc_srv_t *srv = NULL;
713: io_sockaddr_t sa;
714:
715: if (!concurentClients || !regProgID) {
716: rpc_SetErr(EINVAL, "Invalid parameters can`t init RPC server");
717: return NULL;
718: }
719: if (!io_gethostbyname(csHost, Port, &sa))
720: return NULL;
721: if (!Port)
722: Port = RPC_DEFPORT;
723: if (!netBuf)
724: netBuf = BUFSIZ;
725: else
726: netBuf = io_align(netBuf, 1); /* align netBuf length */
727:
728: srv = malloc(sizeof(rpc_srv_t));
729: if (!srv) {
730: LOGERR;
731: return NULL;
732: } else
733: memset(srv, 0, sizeof(rpc_srv_t));
734:
735: srv->srv_netbuf = netBuf;
736: srv->srv_session.sess_version = RPC_VERSION;
737: srv->srv_session.sess_program = regProgID;
738: srv->srv_session.sess_process = regProcID;
739:
740: srv->srv_server.cli_parent = srv;
741: memcpy(&srv->srv_server.cli_sa, &sa, sizeof srv->srv_server.cli_sa);
742:
743: /* init functions list */
744: TAILQ_INIT(&srv->srv_funcs);
745:
746: /* init scheduler */
747: srv->srv_root = schedBegin();
748: if (!srv->srv_root) {
749: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
750: free(srv);
751: return NULL;
752: }
753:
754: /* init pool for clients */
755: srv->srv_clients = io_arrayInit(concurentClients);
756: if (!srv->srv_clients) {
757: rpc_SetErr(io_GetErrno(), "%s", io_GetError());
758: schedEnd(&srv->srv_root);
759: free(srv);
760: return NULL;
761: }
762:
763: /* create server socket */
764: srv->srv_server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, SOCK_STREAM, 0);
765: if (srv->srv_server.cli_sock == -1) {
766: LOGERR;
767: io_arrayDestroy(&srv->srv_clients);
768: schedEnd(&srv->srv_root);
769: free(srv);
770: return NULL;
771: }
772: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
773: LOGERR;
774: goto err;
775: }
776: n = srv->srv_netbuf;
777: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
778: LOGERR;
779: goto err;
780: }
781: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
782: LOGERR;
783: goto err;
784: }
785: if (bind(srv->srv_server.cli_sock, &srv->srv_server.cli_sa.sa,
786: srv->srv_server.cli_sa.sa.sa_len) == -1) {
787: LOGERR;
788: goto err;
789: }
790:
791: return srv;
792: err: /* error condition */
793: close(srv->srv_server.cli_sock);
794: io_arrayDestroy(&srv->srv_clients);
795: schedEnd(&srv->srv_root);
796: free(srv);
797: return NULL;
798: }
799:
800: /*
801: * rpc_srv_endServer() - Destroy RPC server, close all opened sockets and free resources
802: *
803: * @psrv = RPC Server instance
804: * return: none
805: */
806: void
807: rpc_srv_endServer(rpc_srv_t ** __restrict psrv)
808: {
809: rpc_cli_t *c;
810: register int i;
811: rpc_func_t *f, *tmp;
812:
813: if (!psrv || !*psrv) {
814: rpc_SetErr(EINVAL, "Can`t destroy server because parameter is null!");
815: return;
816: }
817:
818: /* close all clients connections & server socket */
819: for (i = 0; i < io_arraySize((*psrv)->srv_clients); i++) {
820: c = io_array((*psrv)->srv_clients, i, rpc_cli_t*);
821: if (c) {
822: shutdown(c->cli_sock, SHUT_RDWR);
823: close(c->cli_sock);
824:
825: free(c);
826: io_arrayDel((*psrv)->srv_clients, i, 0);
827: }
828: }
829: io_arrayDestroy(&(*psrv)->srv_clients);
830:
831: close((*psrv)->srv_server.cli_sock);
832:
833: /* detach exported calls */
834: TAILQ_FOREACH_SAFE(f, &(*psrv)->srv_funcs, func_node, tmp) {
835: io_freeVars(&f->func_vars);
836: AIT_FREE_VAL(&f->func_name);
837: free(f);
838: }
839:
840: schedEnd(&(*psrv)->srv_root);
841: free(*psrv);
842: *psrv = NULL;
843: }
844:
845: /*
846: * rpc_srv_loopServer() - Execute Main server loop and wait for clients requests
847: *
848: * @srv = RPC Server instance
849: * return: -1 error or 0 ok, infinite loop ...
850: */
851: int
852: rpc_srv_loopServer(rpc_srv_t * __restrict srv)
853: {
854: if (!srv) {
855: rpc_SetErr(EINVAL, "Invalid parameter can`t start RPC server");
856: return -1;
857: }
858:
859: fcntl(srv->srv_server.cli_sock, F_SETFL,
860: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
861:
862: if (listen(srv->srv_server.cli_sock, io_arraySize(srv->srv_clients)) == -1) {
863: LOGERR;
864: return -1;
865: }
866:
867: if (!schedRead(srv->srv_root, acceptClients, srv, srv->srv_server.cli_sock, NULL, 0)) {
868: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
869: return -1;
870: }
871:
872: /* main rpc loop */
873: schedRun(srv->srv_root, &srv->srv_kill);
874: return 0;
875: }
876:
877:
878: /*
879: * rpc_srv_execCall() Execute registered call from RPC server
880: *
881: * @call = Register RPC call
882: * @rpc = IN RPC call structure
883: * @args = IN RPC calling arguments from RPC client
884: * return: -1 error, !=-1 ok
885: */
886: int
887: rpc_srv_execCall(rpc_func_t * __restrict call, struct tagRPCCall * __restrict rpc,
888: array_t * __restrict args)
889: {
890: rpc_callback_t func;
891:
892: if (!call || !rpc || !call->func_parent || !AIT_ADDR(&call->func_name)) {
893: rpc_SetErr(EINVAL, "Invalid parameter can`t exec function");
894: return -1;
895: }
896:
897: func = AIT_GET_LIKE(&call->func_name, rpc_callback_t);
898: return func(call, ntohs(rpc->call_argc), args);
899: }
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