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 1.9.2.5 2012/05/15 16:10:58 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_FD, (void*) c->cli_sock, 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: array_t *arr = NULL;
79:
80: /* copy RPC header */
81: memcpy(buf, TASK_DATA(task), wlen);
82:
83: if (rpc->call_argc) {
84: f = rpc_srv_getCall(s, ntohs(rpc->call_tag), ntohl(rpc->call_hash));
85: if (!f) {
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(rpc_srv_getVars(f, &arr));
91: /* Go Encapsulate variables */
92: ret = io_vars2buffer(buf + wlen, sizeof buf - wlen, arr);
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: }
145:
146: if (!(f = rpc_srv_getCall(s, ntohs(rpc->call_tag), ntohl(rpc->call_hash)))) {
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: rpc->call_argc = htons(rpc_srv_getVars(f, NULL));
166: }
167: }
168:
169: if (arr)
170: io_arrayDestroy(&arr);
171: return NULL;
172: }
173:
174: static void *
175: rxPacket(sched_task_t *task)
176: {
177: rpc_cli_t *c = TASK_ARG(task);
178: rpc_srv_t *s = c->cli_parent;
179: u_char *buf = AIT_GET_BUF(&c->cli_buf);
180: int len, rlen, noreply;
181: u_short crc, off = 0;
182: struct tagRPCCall *rpc;
183:
184: memset(buf, 0, AIT_LEN(&c->cli_buf));
185: rlen = recv(TASK_FD(task), buf, AIT_LEN(&c->cli_buf), 0);
186: if (rlen < 1) {
187: /* close connection */
188: schedEvent(TASK_ROOT(task), closeClient, c, 0, NULL, 0);
189: return NULL;
190: }
191:
192: do {
193: /* check RPC packet */
194: if (rlen < sizeof(struct tagRPCCall)) {
195: rpc_SetErr(ERPCMISMATCH, "Too short RPC packet");
196:
197: schedReadSelf(task);
198: return NULL;
199: } else
200: rpc = (struct tagRPCCall*) (buf + off);
201:
202: len = ntohs(rpc->call_len);
203: rlen -= len;
204:
205: /* check integrity of packet */
206: crc = ntohs(rpc->call_crc);
207: rpc->call_crc ^= rpc->call_crc;
208: if (crc != crcFletcher16((u_short*) (buf + off), len / 2)) {
209: rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet");
210:
211: off += len;
212: if (rlen < 1)
213: break;
214: else
215: continue;
216: }
217:
218: noreply = rpc->call_req.flags & RPC_NOREPLY;
219:
220: /* check RPC packet session info */
221: if (rpc_chkPktSession(&rpc->call_session, &s->srv_session)) {
222: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
223: rpc->call_argc ^= rpc->call_argc;
224: rpc->call_rep.ret = RPC_ERROR(-1);
225: rpc->call_rep.eno = RPC_ERROR(errno);
226: } else {
227: /* execute RPC call */
228: schedEvent(TASK_ROOT(task), execCall, TASK_ARG(task), off, NULL, 0);
229: }
230:
231: /* send RPC reply */
232: if (!noreply)
233: schedWrite(TASK_ROOT(task), txPacket, TASK_ARG(task), TASK_FD(task), rpc, len);
234:
235: off += len;
236: } while (rlen > 0);
237:
238: /* lets get next packet */
239: schedReadSelf(task);
240: return NULL;
241: }
242:
243: static void *
244: acceptClients(sched_task_t *task)
245: {
246: rpc_srv_t *srv = TASK_ARG(task);
247: rpc_cli_t *c = NULL;
248: register int i;
249: socklen_t salen = sizeof(io_sockaddr_t);
250:
251: /* check free slots for connect */
252: for (i = 0; i < io_arraySize(srv->srv_clients) &&
253: (c = io_array(srv->srv_clients, i, rpc_cli_t*)); i++);
254: if (c) /* no more free slots! */
255: goto end;
256: c = malloc(sizeof(rpc_cli_t));
257: if (!c) {
258: LOGERR;
259: srv->srv_kill = kill;
260: return NULL;
261: } else {
262: memset(c, 0, sizeof(rpc_cli_t));
263: io_arraySet(srv->srv_clients, i, c);
264: c->cli_id = i;
265: c->cli_parent = srv;
266: }
267:
268: /* accept client */
269: c->cli_sock = accept(srv->srv_server.cli_sock, &c->cli_sa.sa, &salen);
270: if (c->cli_sock == -1) {
271: LOGERR;
272: io_arrayDel(srv->srv_clients, i, 42);
273: goto end;
274: } else
275: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
276:
277: /* alloc empty buffer */
278: AIT_SET_BUF2(&c->cli_buf, 0, srv->srv_netbuf);
279:
280: schedRead(TASK_ROOT(task), rxPacket, c, c->cli_sock, NULL, 0);
281: end:
282: schedReadSelf(task);
283: return NULL;
284: }
285:
286: #if 0
287: static void *
288: txBLOB(sched_task_t *task)
289: {
290: u_char *buf = TASK_DATA(task);
291: struct tagBLOBHdr *blob = (struct tagBLOBHdr *) buf;
292: int wlen = sizeof(struct tagBLOBHdr);
293:
294: /* calculate CRC */
295: blob->hdr_crc ^= blob->hdr_crc;
296: blob->hdr_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
297:
298: /* send reply */
299: wlen = send(TASK_FD(task), buf, wlen, 0);
300: if (wlen == -1)
301: LOGERR;
302: else if (wlen != sizeof(struct tagBLOBHdr))
303: rpc_SetErr(EPROCUNAVAIL, "RPC reply, should be send %d bytes, "
304: "really sended %d bytes", sizeof(struct tagBLOBHdr), wlen);
305:
306: return NULL;
307: }
308:
309: static void *
310: rxBLOB(sched_task_t *task)
311: {
312: rpc_cli_t *c = TASK_ARG(task);
313: rpc_srv_t *s = c->cli_parent;
314: rpc_blob_t *b;
315: u_char *buf = TASK_DATA(task);
316: struct tagBLOBHdr *blob = (struct tagBLOBHdr *) buf;
317: int rlen;
318: u_short crc;
319: struct timespec ts;
320:
321: /* check for disable service at this moment? */
322: if (!s || s->srv_blob.state == disable) {
323: usleep(100000);
324: #ifdef HAVE_PTHREAD_YIELD
325: pthread_yield();
326: #endif
327: schedRead(TASK_ROOT(task), rxBLOB, TASK_ARG(task), TASK_FD(task),
328: TASK_DATA(task), TASK_DATLEN(task));
329: return NULL;
330: }
331:
332: memset(buf, 0, TASK_DATLEN(task));
333: rlen = recv(TASK_FD(task), buf, TASK_DATLEN(task), 0);
334: if (rlen == -1) {
335: LOGERR;
336: c->cli_kill = kill;
337: return NULL;
338: } else if (!rlen) { /* receive EOF */
339: c->cli_kill = kill;
340: return NULL;
341: }
342:
343: if (rlen < sizeof(struct tagBLOBHdr)) {
344: rpc_SetErr(ERPCMISMATCH, "Too short BLOB packet");
345: schedRead(TASK_ROOT(task), rxBLOB, TASK_ARG(task), TASK_FD(task),
346: TASK_DATA(task), TASK_DATLEN(task));
347: return NULL;
348: }
349:
350: /* check integrity of packet */
351: crc = ntohs(blob->hdr_crc);
352: blob->hdr_crc ^= blob->hdr_crc;
353: if (crc != crcFletcher16((u_short*) buf, rlen / 2)) {
354: rpc_SetErr(ERPCMISMATCH, "Bad CRC BLOB packet");
355: schedRead(TASK_ROOT(task), rxBLOB, TASK_ARG(task), TASK_FD(task),
356: TASK_DATA(task), TASK_DATLEN(task));
357: return NULL;
358: }
359:
360: /* check RPC packet session info */
361: if ((crc = rpc_chkPktSession(&blob->hdr_session, &s->srv_session))) {
362: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
363: blob->hdr_cmd = error;
364: goto end;
365: } else {
366: /* change socket timeout from last packet */
367: ts.tv_sec = blob->hdr_session.sess_timeout;
368: ts.tv_nsec = 0;
369: schedPolling(TASK_ROOT(task), &ts, NULL);
370: }
371:
372: /* Go to proceed packet ... */
373: switch (blob->hdr_cmd) {
374: case get:
375: if (!(b = rpc_srv_getBLOB(s, ntohl(blob->hdr_var)))) {
376: rpc_SetErr(EINVAL, "Var=%x not found", ntohl(blob->hdr_var));
377: blob->hdr_cmd = no;
378: blob->hdr_ret = RPC_ERROR(-1);
379: break;
380: } else
381: blob->hdr_len = htonl(b->blob_len);
382:
383: if (rpc_srv_blobMap(s, b) != -1) {
384: /* deliver BLOB variable to client */
385: blob->hdr_ret = htonl(rpc_srv_sendBLOB(c, b));
386: rpc_srv_blobUnmap(b);
387: } else {
388: blob->hdr_cmd = error;
389: blob->hdr_ret = RPC_ERROR(-1);
390: }
391: break;
392: case set:
393: if ((b = rpc_srv_registerBLOB(s, ntohl(blob->hdr_len)))) {
394: /* set new BLOB variable for reply :) */
395: blob->hdr_var = htonl(b->blob_var);
396:
397: /* receive BLOB from client */
398: blob->hdr_ret = htonl(rpc_srv_recvBLOB(c, b));
399: rpc_srv_blobUnmap(b);
400: } else {
401: blob->hdr_cmd = error;
402: blob->hdr_ret = RPC_ERROR(-1);
403: }
404: break;
405: case unset:
406: if (rpc_srv_unregisterBLOB(s, blob->hdr_var) == -1) {
407: blob->hdr_cmd = error;
408: blob->hdr_ret = RPC_ERROR(-1);
409: }
410: break;
411: default:
412: rpc_SetErr(EPROCUNAVAIL, "Unsupported BLOB command %d", blob->hdr_cmd);
413: blob->hdr_cmd = error;
414: blob->hdr_ret = RPC_ERROR(-1);
415: }
416:
417: end:
418: schedWrite(TASK_ROOT(task), txBLOB, TASK_ARG(task), TASK_FD(task),
419: TASK_DATA(task), TASK_DATLEN(task));
420: schedRead(TASK_ROOT(task), rxBLOB, TASK_ARG(task), TASK_FD(task),
421: TASK_DATA(task), TASK_DATLEN(task));
422: return NULL;
423: }
424:
425: static void *
426: rpc_srv_dispatchVars(void *arg)
427: {
428: rpc_cli_t *c = arg;
429: rpc_srv_t *s;
430: sched_root_task_t *root;
431: u_char *buf;
432: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
433:
434: if (!arg) {
435: rpc_SetErr(EINVAL, "Invalid parameter can`t procced BLOB");
436: return NULL;
437: } else
438: s = c->cli_parent;
439:
440: /* allocate net buffer */
441: buf = malloc(sizeof(struct tagBLOBHdr));
442: if (!buf) {
443: LOGERR;
444: return NULL;
445: }
446:
447: root = schedBegin();
448: if (!root) {
449: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
450: free(buf);
451: return NULL;
452: } else {
453: schedTermCondition(root, kill);
454: schedPolling(root, &ts, NULL);
455: }
456:
457: schedRead(root, rxBLOB, c, c->cli_sock, buf, sizeof(struct tagBLOBHdr));
458:
459: schedRun(root, (void*) &c->cli_kill);
460: schedEnd(&root);
461:
462: shutdown(c->cli_sock, SHUT_RDWR);
463: close(c->cli_sock);
464: memset(c, 0, sizeof(rpc_cli_t));
465: free(buf);
466: return NULL;
467: }
468:
469: // -------------------------------------------------
470:
471: /*
472: * rpc_srv_initBLOBServer() - Init & create BLOB Server
473: *
474: * @srv = RPC server instance
475: * @Port = Port for bind server, if Port == 0 default port is selected
476: * @diskDir = Disk place for BLOB file objects
477: * return: -1 == error or 0 bind and created BLOB server instance
478: */
479: int
480: rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, u_short Port, const char *diskDir)
481: {
482: int n = 1;
483: io_sockaddr_t sa;
484:
485: if (!srv) {
486: rpc_SetErr(EINVAL, "Invalid parameters can`t init BLOB server");
487: return -1;
488: }
489: if (srv->srv_blob.state) {
490: rpc_SetErr(EPERM, "Already started BLOB server!");
491: return 0;
492: }
493:
494: memset(&srv->srv_blob, 0, sizeof srv->srv_blob);
495: if (access(diskDir, R_OK | W_OK) == -1) {
496: LOGERR;
497: return -1;
498: } else
499: AIT_SET_STR(&srv->srv_blob.dir, diskDir);
500:
501: srv->srv_blob.server.cli_tid = pthread_self();
502: srv->srv_blob.server.cli_parent = srv;
503:
504: memcpy(&sa, &srv->srv_server.cli_sa, sizeof sa);
505: switch (sa.sa.sa_family) {
506: case AF_INET:
507: sa.sin.sin_port = htons(Port ? Port : ntohs(sa.sin.sin_port) + 1);
508: break;
509: case AF_INET6:
510: sa.sin6.sin6_port = htons(Port ? Port : ntohs(sa.sin6.sin6_port) + 1);
511: break;
512: case AF_LOCAL:
513: strlcat(sa.sun.sun_path, ".blob", sizeof sa.sun.sun_path);
514: break;
515: default:
516: AIT_FREE_VAL(&srv->srv_blob.dir);
517: return -1;
518: }
519: memcpy(&srv->srv_blob.server.cli_sa, &sa, sizeof sa);
520:
521: /* create BLOB server socket */
522: srv->srv_blob.server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, SOCK_STREAM, 0);
523: if (srv->srv_blob.server.cli_sock == -1) {
524: LOGERR;
525: AIT_FREE_VAL(&srv->srv_blob.dir);
526: return -1;
527: }
528: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
529: LOGERR;
530: close(srv->srv_blob.server.cli_sock);
531: AIT_FREE_VAL(&srv->srv_blob.dir);
532: return -1;
533: }
534: n = srv->srv_netbuf;
535: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
536: LOGERR;
537: close(srv->srv_blob.server.cli_sock);
538: AIT_FREE_VAL(&srv->srv_blob.dir);
539: return -1;
540: }
541: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
542: LOGERR;
543: close(srv->srv_blob.server.cli_sock);
544: AIT_FREE_VAL(&srv->srv_blob.dir);
545: return -1;
546: }
547: if (bind(srv->srv_blob.server.cli_sock, &srv->srv_blob.server.cli_sa.sa,
548: srv->srv_blob.server.cli_sa.sa.sa_len) == -1) {
549: LOGERR;
550: close(srv->srv_blob.server.cli_sock);
551: AIT_FREE_VAL(&srv->srv_blob.dir);
552: return -1;
553: }
554:
555: /* allocate pool for concurent clients */
556: srv->srv_blob.clients = calloc(srv->srv_numcli, sizeof(rpc_cli_t));
557: if (!srv->srv_blob.clients) {
558: LOGERR;
559: close(srv->srv_blob.server.cli_sock);
560: AIT_FREE_VAL(&srv->srv_blob.dir);
561: return -1;
562: } else
563: memset(srv->srv_blob.clients, 0, srv->srv_numcli * sizeof(rpc_cli_t));
564:
565: rpc_srv_registerCall(srv, NULL, CALL_BLOBSHUTDOWN, 0);
566: rpc_srv_registerCall(srv, NULL, CALL_BLOBCLIENTS, 1);
567: rpc_srv_registerCall(srv, NULL, CALL_BLOBVARS, 1);
568: rpc_srv_registerCall(srv, NULL, CALL_BLOBSTATE, 0);
569:
570: srv->srv_blob.state = enable; /* enable BLOB */
571: return 0;
572: }
573:
574: /*
575: * rpc_srv_endBLOBServer() - Destroy BLOB server, close all opened sockets and free resources
576: *
577: * @srv = RPC Server instance
578: * return: none
579: */
580: void
581: rpc_srv_endBLOBServer(rpc_srv_t * __restrict srv)
582: {
583: rpc_cli_t *c;
584: register int i;
585: rpc_blob_t *f;
586:
587: if (!srv || srv->srv_blob.state == disable)
588: return;
589: else
590: srv->srv_blob.state = kill;
591:
592: rpc_srv_unregisterCall(srv, NULL, CALL_BLOBSHUTDOWN);
593: rpc_srv_unregisterCall(srv, NULL, CALL_BLOBCLIENTS);
594: rpc_srv_unregisterCall(srv, NULL, CALL_BLOBVARS);
595: rpc_srv_unregisterCall(srv, NULL, CALL_BLOBSTATE);
596:
597: /* close all clients connections & server socket */
598: for (i = 0, c = srv->srv_blob.clients; i < srv->srv_numcli && c; i++, c++)
599: if (c->cli_sa.sa.sa_family)
600: shutdown(c->cli_sock, SHUT_RDWR);
601: close(srv->srv_blob.server.cli_sock);
602:
603: if (srv->srv_blob.clients) {
604: free(srv->srv_blob.clients);
605: srv->srv_blob.clients = NULL;
606: }
607:
608: /* detach blobs */
609: while ((f = srv->srv_blob.blobs)) {
610: srv->srv_blob.blobs = f->blob_next;
611: rpc_srv_blobFree(srv, f);
612: free(f);
613: }
614:
615: AIT_FREE_VAL(&srv->srv_blob.dir);
616:
617: /* at final, save disable BLOB service state */
618: srv->srv_blob.state = disable;
619: }
620:
621: /*
622: * rpc_srv_loopBLOB() - Execute Main BLOB server loop and wait for clients requests
623: *
624: * @srv = RPC Server instance
625: * return: -1 error or 0 ok, infinite loop ...
626: */
627: int
628: rpc_srv_loopBLOB(rpc_srv_t * __restrict srv)
629: {
630: socklen_t salen = sizeof(io_sockaddr_t);
631: register int i;
632: rpc_cli_t *c;
633: int ret;
634: pthread_attr_t attr;
635: struct pollfd pfd;
636:
637: if (!srv || srv->srv_blob.state == kill) {
638: rpc_SetErr(EINVAL, "Invalid parameter can`t start BLOB server");
639: return -1;
640: }
641:
642: if (listen(srv->srv_blob.server.cli_sock, SOMAXCONN) == -1) {
643: LOGERR;
644: return -1;
645: } else
646: fcntl(srv->srv_blob.server.cli_sock, F_SETFL,
647: fcntl(srv->srv_blob.server.cli_sock, F_GETFL) | O_NONBLOCK);
648:
649: pthread_attr_init(&attr);
650: pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
651:
652: pfd.fd = srv->srv_blob.server.cli_sock;
653: pfd.events = POLLIN | POLLPRI;
654: /* main BLOB loop */
655: while (srv->srv_blob.state != kill && srv->srv_kill != kill) {
656: for (c = srv->srv_blob.clients, i = 0; i < srv->srv_numcli && c; i++, c++)
657: if (!c->cli_sa.sa.sa_family)
658: break;
659: if (i >= srv->srv_numcli) {
660: #ifdef HAVE_PTHREAD_YIELD
661: pthread_yield();
662: #endif
663: usleep(1000000);
664: continue;
665: }
666:
667: if ((ret = poll(&pfd, 1, srv->srv_session.sess_timeout * 1000)) == -1 ||
668: pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
669: LOGERR;
670: ret = 1;
671: break;
672: } else if (!ret)
673: continue;
674:
675: c->cli_sock = accept(srv->srv_blob.server.cli_sock, &c->cli_sa.sa, &salen);
676: if (c->cli_sock == -1) {
677: LOGERR;
678: continue;
679: } else
680: c->cli_parent = srv;
681:
682: /* spawn dispatch thread for BLOB client */
683: c->cli_kill = enable;
684: if (pthread_create(&c->cli_tid, &attr, rpc_srv_dispatchVars, c)) {
685: LOGERR;
686: continue;
687: }
688: }
689:
690: srv->srv_blob.state = kill;
691:
692: pthread_attr_destroy(&attr);
693: return 0;
694: }
695: #endif
696:
697:
698: /*
699: * rpc_srv_initServer() - Init & create RPC Server
700: *
701: * @regProgID = ProgramID for authentication & recognition
702: * @regProcID = ProcessID for authentication & recognition
703: * @concurentClients = Concurent clients at same time to this server
704: * @netBuf = Network buffer length, if =0 == BUFSIZ (also meaning max RPC packet)
705: * @csHost = Host name or address for bind server, if NULL any address
706: * @Port = Port for bind server, if Port == 0 default port is selected
707: * return: NULL == error or !=NULL bind and created RPC server instance
708: */
709: rpc_srv_t *
710: rpc_srv_initServer(u_int regProgID, u_int regProcID, int concurentClients,
711: int netBuf, const char *csHost, u_short Port)
712: {
713: int n = 1;
714: rpc_srv_t *srv = NULL;
715: io_sockaddr_t sa;
716:
717: if (!concurentClients || !regProgID) {
718: rpc_SetErr(EINVAL, "Invalid parameters can`t init RPC server");
719: return NULL;
720: }
721: if (!io_gethostbyname(csHost, Port, &sa))
722: return NULL;
723: if (!Port)
724: Port = RPC_DEFPORT;
725: if (!netBuf)
726: netBuf = BUFSIZ;
727: else
728: netBuf = io_align(netBuf, 1); /* align netBuf length */
729:
730: srv = malloc(sizeof(rpc_srv_t));
731: if (!srv) {
732: LOGERR;
733: return NULL;
734: } else
735: memset(srv, 0, sizeof(rpc_srv_t));
736:
737: srv->srv_netbuf = netBuf;
738: srv->srv_session.sess_version = RPC_VERSION;
739: srv->srv_session.sess_timeout = DEF_RPC_TIMEOUT;
740: srv->srv_session.sess_program = regProgID;
741: srv->srv_session.sess_process = regProcID;
742:
743: srv->srv_server.cli_parent = srv;
744: memcpy(&srv->srv_server.cli_sa, &sa, sizeof srv->srv_server.cli_sa);
745:
746: /* init functions list */
747: TAILQ_INIT(&srv->srv_funcs);
748:
749: /* init scheduler */
750: srv->srv_root = schedBegin();
751: if (!srv->srv_root) {
752: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
753: free(srv);
754: return NULL;
755: }
756:
757: /* init pool for clients */
758: srv->srv_clients = io_arrayInit(concurentClients);
759: if (!srv->srv_clients) {
760: rpc_SetErr(io_GetErrno(), "%s", io_GetError());
761: schedEnd(&srv->srv_root);
762: free(srv);
763: return NULL;
764: }
765:
766: /* create server socket */
767: srv->srv_server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, SOCK_STREAM, 0);
768: if (srv->srv_server.cli_sock == -1) {
769: LOGERR;
770: io_arrayDestroy(&srv->srv_clients);
771: schedEnd(&srv->srv_root);
772: free(srv);
773: return NULL;
774: }
775: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
776: LOGERR;
777: goto err;
778: }
779: n = srv->srv_netbuf;
780: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
781: LOGERR;
782: goto err;
783: }
784: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
785: LOGERR;
786: goto err;
787: }
788: if (bind(srv->srv_server.cli_sock, &srv->srv_server.cli_sa.sa,
789: srv->srv_server.cli_sa.sa.sa_len) == -1) {
790: LOGERR;
791: goto err;
792: }
793:
794: return srv;
795: err: /* error condition */
796: close(srv->srv_server.cli_sock);
797: io_arrayDestroy(&srv->srv_clients);
798: schedEnd(&srv->srv_root);
799: free(srv);
800: return NULL;
801: }
802:
803: /*
804: * rpc_srv_endServer() - Destroy RPC server, close all opened sockets and free resources
805: *
806: * @psrv = RPC Server instance
807: * return: none
808: */
809: void
810: rpc_srv_endServer(rpc_srv_t ** __restrict psrv)
811: {
812: rpc_cli_t *c;
813: register int i;
814: rpc_func_t *f, *tmp;
815:
816: if (!psrv || !*psrv) {
817: rpc_SetErr(EINVAL, "Can`t destroy server because parameter is null!");
818: return;
819: }
820:
821: /* close all clients connections & server socket */
822: for (i = 0; i < io_arraySize((*psrv)->srv_clients); i++) {
823: c = io_array((*psrv)->srv_clients, i, rpc_cli_t*);
824: if (c) {
825: shutdown(c->cli_sock, SHUT_RDWR);
826: close(c->cli_sock);
827: free(c);
828: io_arrayDel((*psrv)->srv_clients, i, 0);
829: }
830: }
831: io_arrayDestroy(&(*psrv)->srv_clients);
832:
833: close((*psrv)->srv_server.cli_sock);
834:
835: /* detach exported calls */
836: TAILQ_FOREACH_SAFE(f, &(*psrv)->srv_funcs, func_node, tmp) {
837: io_freeVars(&f->func_vars);
838: AIT_FREE_VAL(&f->func_name);
839: AIT_FREE_VAL(&f->func_file);
840: free(f);
841: }
842:
843: schedEnd(&(*psrv)->srv_root);
844: free(*psrv);
845: *psrv = NULL;
846: }
847:
848: /*
849: * rpc_srv_loopServer() - Execute Main server loop and wait for clients requests
850: *
851: * @srv = RPC Server instance
852: * return: -1 error or 0 ok, infinite loop ...
853: */
854: int
855: rpc_srv_loopServer(rpc_srv_t * __restrict srv)
856: {
857: /*
858: int ret;
859: */
860:
861: if (!srv) {
862: rpc_SetErr(EINVAL, "Invalid parameter can`t start RPC server");
863: return -1;
864: }
865:
866: if (listen(srv->srv_server.cli_sock, io_arraySize(srv->srv_clients)) == -1) {
867: LOGERR;
868: return -1;
869: } else
870: fcntl(srv->srv_server.cli_sock, F_SETFL,
871: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
872:
873: if (!schedRead(srv->srv_root, acceptClients, srv, srv->srv_server.cli_sock, NULL, 0)) {
874: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
875: return -1;
876: }
877:
878: /* main rpc loop */
879: schedRun(srv->srv_root, &srv->srv_kill);
880: return 0;
881: }
882:
883:
884: /*
885: * rpc_srv_execCall() Execute registered call from RPC server
886: *
887: * @call = Register RPC call
888: * @rpc = IN RPC call structure
889: * @args = IN RPC calling arguments from RPC client
890: * return: -1 error, !=-1 ok
891: */
892: int
893: rpc_srv_execCall(rpc_func_t * __restrict call, struct tagRPCCall * __restrict rpc,
894: array_t * __restrict args)
895: {
896: void *dl;
897: rpc_callback_t func;
898: int ret;
899:
900: if (!call || !rpc || !call->func_parent) {
901: rpc_SetErr(EINVAL, "Invalid parameter can`t exec function");
902: return -1;
903: }
904:
905: dl = dlopen(AIT_ADDR(&call->func_file), RTLD_LAZY | RTLD_GLOBAL);
906: if (!dl) {
907: rpc_SetErr(ENOENT, "Can`t attach module %s!", dlerror());
908: return -1;
909: }
910:
911: func = dlsym(dl, (const char*) AIT_GET_STR(&call->func_name));
912: if (func)
913: ret = func(call, ntohs(rpc->call_argc), args);
914: else {
915: rpc_SetErr(ENOEXEC, "Can`t find function %s!", dlerror());
916: ret = -1;
917: }
918:
919: dlclose(dl);
920: return ret;
921: }
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