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 1.9.2.6 2012/05/15 20:49:25 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: 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));
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)))) {
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: /* alloc empty buffer */
269: AIT_SET_BUF2(&c->cli_buf, 0, srv->srv_netbuf);
270:
271: /* accept client */
272: c->cli_sock = accept(srv->srv_server.cli_sock, &c->cli_sa.sa, &salen);
273: if (c->cli_sock == -1) {
274: LOGERR;
275: AIT_FREE_VAL(&c->cli_buf);
276: io_arrayDel(srv->srv_clients, i, 42);
277: goto end;
278: } else
279: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
280:
281: schedRead(TASK_ROOT(task), rxPacket, c, c->cli_sock, NULL, 0);
282: end:
283: schedReadSelf(task);
284: return NULL;
285: }
286:
287: #if 0
288: static void *
289: txBLOB(sched_task_t *task)
290: {
291: u_char *buf = TASK_DATA(task);
292: struct tagBLOBHdr *blob = (struct tagBLOBHdr *) buf;
293: int wlen = sizeof(struct tagBLOBHdr);
294:
295: /* calculate CRC */
296: blob->hdr_crc ^= blob->hdr_crc;
297: blob->hdr_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
298:
299: /* send reply */
300: wlen = send(TASK_FD(task), buf, wlen, 0);
301: if (wlen == -1)
302: LOGERR;
303: else if (wlen != sizeof(struct tagBLOBHdr))
304: rpc_SetErr(EPROCUNAVAIL, "RPC reply, should be send %d bytes, "
305: "really sended %d bytes", sizeof(struct tagBLOBHdr), wlen);
306:
307: return NULL;
308: }
309:
310: static void *
311: rxBLOB(sched_task_t *task)
312: {
313: rpc_cli_t *c = TASK_ARG(task);
314: rpc_srv_t *s = c->cli_parent;
315: rpc_blob_t *b;
316: u_char *buf = TASK_DATA(task);
317: struct tagBLOBHdr *blob = (struct tagBLOBHdr *) buf;
318: int rlen;
319: u_short crc;
320: struct timespec ts;
321:
322: /* check for disable service at this moment? */
323: if (!s || s->srv_blob.state == disable) {
324: usleep(100000);
325: #ifdef HAVE_PTHREAD_YIELD
326: pthread_yield();
327: #endif
328: schedRead(TASK_ROOT(task), rxBLOB, TASK_ARG(task), TASK_FD(task),
329: TASK_DATA(task), TASK_DATLEN(task));
330: return NULL;
331: }
332:
333: memset(buf, 0, TASK_DATLEN(task));
334: rlen = recv(TASK_FD(task), buf, TASK_DATLEN(task), 0);
335: if (rlen == -1) {
336: LOGERR;
337: c->cli_kill = kill;
338: return NULL;
339: } else if (!rlen) { /* receive EOF */
340: c->cli_kill = kill;
341: return NULL;
342: }
343:
344: if (rlen < sizeof(struct tagBLOBHdr)) {
345: rpc_SetErr(ERPCMISMATCH, "Too short BLOB packet");
346: schedRead(TASK_ROOT(task), rxBLOB, TASK_ARG(task), TASK_FD(task),
347: TASK_DATA(task), TASK_DATLEN(task));
348: return NULL;
349: }
350:
351: /* check integrity of packet */
352: crc = ntohs(blob->hdr_crc);
353: blob->hdr_crc ^= blob->hdr_crc;
354: if (crc != crcFletcher16((u_short*) buf, rlen / 2)) {
355: rpc_SetErr(ERPCMISMATCH, "Bad CRC BLOB packet");
356: schedRead(TASK_ROOT(task), rxBLOB, TASK_ARG(task), TASK_FD(task),
357: TASK_DATA(task), TASK_DATLEN(task));
358: return NULL;
359: }
360:
361: /* check RPC packet session info */
362: if ((crc = rpc_chkPktSession(&blob->hdr_session, &s->srv_session))) {
363: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
364: blob->hdr_cmd = error;
365: goto end;
366: } else {
367: /* change socket timeout from last packet */
368: ts.tv_sec = blob->hdr_session.sess_timeout;
369: ts.tv_nsec = 0;
370: schedPolling(TASK_ROOT(task), &ts, NULL);
371: }
372:
373: /* Go to proceed packet ... */
374: switch (blob->hdr_cmd) {
375: case get:
376: if (!(b = rpc_srv_getBLOB(s, ntohl(blob->hdr_var)))) {
377: rpc_SetErr(EINVAL, "Var=%x not found", ntohl(blob->hdr_var));
378: blob->hdr_cmd = no;
379: blob->hdr_ret = RPC_ERROR(-1);
380: break;
381: } else
382: blob->hdr_len = htonl(b->blob_len);
383:
384: if (rpc_srv_blobMap(s, b) != -1) {
385: /* deliver BLOB variable to client */
386: blob->hdr_ret = htonl(rpc_srv_sendBLOB(c, b));
387: rpc_srv_blobUnmap(b);
388: } else {
389: blob->hdr_cmd = error;
390: blob->hdr_ret = RPC_ERROR(-1);
391: }
392: break;
393: case set:
394: if ((b = rpc_srv_registerBLOB(s, ntohl(blob->hdr_len)))) {
395: /* set new BLOB variable for reply :) */
396: blob->hdr_var = htonl(b->blob_var);
397:
398: /* receive BLOB from client */
399: blob->hdr_ret = htonl(rpc_srv_recvBLOB(c, b));
400: rpc_srv_blobUnmap(b);
401: } else {
402: blob->hdr_cmd = error;
403: blob->hdr_ret = RPC_ERROR(-1);
404: }
405: break;
406: case unset:
407: if (rpc_srv_unregisterBLOB(s, blob->hdr_var) == -1) {
408: blob->hdr_cmd = error;
409: blob->hdr_ret = RPC_ERROR(-1);
410: }
411: break;
412: default:
413: rpc_SetErr(EPROCUNAVAIL, "Unsupported BLOB command %d", blob->hdr_cmd);
414: blob->hdr_cmd = error;
415: blob->hdr_ret = RPC_ERROR(-1);
416: }
417:
418: end:
419: schedWrite(TASK_ROOT(task), txBLOB, TASK_ARG(task), TASK_FD(task),
420: TASK_DATA(task), TASK_DATLEN(task));
421: schedRead(TASK_ROOT(task), rxBLOB, TASK_ARG(task), TASK_FD(task),
422: TASK_DATA(task), TASK_DATLEN(task));
423: return NULL;
424: }
425:
426: static void *
427: rpc_srv_dispatchVars(void *arg)
428: {
429: rpc_cli_t *c = arg;
430: rpc_srv_t *s;
431: sched_root_task_t *root;
432: u_char *buf;
433: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
434:
435: if (!arg) {
436: rpc_SetErr(EINVAL, "Invalid parameter can`t procced BLOB");
437: return NULL;
438: } else
439: s = c->cli_parent;
440:
441: /* allocate net buffer */
442: buf = malloc(sizeof(struct tagBLOBHdr));
443: if (!buf) {
444: LOGERR;
445: return NULL;
446: }
447:
448: root = schedBegin();
449: if (!root) {
450: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
451: free(buf);
452: return NULL;
453: } else {
454: schedTermCondition(root, kill);
455: schedPolling(root, &ts, NULL);
456: }
457:
458: schedRead(root, rxBLOB, c, c->cli_sock, buf, sizeof(struct tagBLOBHdr));
459:
460: schedRun(root, (void*) &c->cli_kill);
461: schedEnd(&root);
462:
463: shutdown(c->cli_sock, SHUT_RDWR);
464: close(c->cli_sock);
465: memset(c, 0, sizeof(rpc_cli_t));
466: free(buf);
467: return NULL;
468: }
469:
470: // -------------------------------------------------
471:
472: /*
473: * rpc_srv_initBLOBServer() - Init & create BLOB Server
474: *
475: * @srv = RPC server instance
476: * @Port = Port for bind server, if Port == 0 default port is selected
477: * @diskDir = Disk place for BLOB file objects
478: * return: -1 == error or 0 bind and created BLOB server instance
479: */
480: int
481: rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, u_short Port, const char *diskDir)
482: {
483: int n = 1;
484: io_sockaddr_t sa;
485:
486: if (!srv) {
487: rpc_SetErr(EINVAL, "Invalid parameters can`t init BLOB server");
488: return -1;
489: }
490: if (srv->srv_blob.state) {
491: rpc_SetErr(EPERM, "Already started BLOB server!");
492: return 0;
493: }
494:
495: memset(&srv->srv_blob, 0, sizeof srv->srv_blob);
496: if (access(diskDir, R_OK | W_OK) == -1) {
497: LOGERR;
498: return -1;
499: } else
500: AIT_SET_STR(&srv->srv_blob.dir, diskDir);
501:
502: srv->srv_blob.server.cli_tid = pthread_self();
503: srv->srv_blob.server.cli_parent = srv;
504:
505: memcpy(&sa, &srv->srv_server.cli_sa, sizeof sa);
506: switch (sa.sa.sa_family) {
507: case AF_INET:
508: sa.sin.sin_port = htons(Port ? Port : ntohs(sa.sin.sin_port) + 1);
509: break;
510: case AF_INET6:
511: sa.sin6.sin6_port = htons(Port ? Port : ntohs(sa.sin6.sin6_port) + 1);
512: break;
513: case AF_LOCAL:
514: strlcat(sa.sun.sun_path, ".blob", sizeof sa.sun.sun_path);
515: break;
516: default:
517: AIT_FREE_VAL(&srv->srv_blob.dir);
518: return -1;
519: }
520: memcpy(&srv->srv_blob.server.cli_sa, &sa, sizeof sa);
521:
522: /* create BLOB server socket */
523: srv->srv_blob.server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, SOCK_STREAM, 0);
524: if (srv->srv_blob.server.cli_sock == -1) {
525: LOGERR;
526: AIT_FREE_VAL(&srv->srv_blob.dir);
527: return -1;
528: }
529: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
530: LOGERR;
531: close(srv->srv_blob.server.cli_sock);
532: AIT_FREE_VAL(&srv->srv_blob.dir);
533: return -1;
534: }
535: n = srv->srv_netbuf;
536: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
537: LOGERR;
538: close(srv->srv_blob.server.cli_sock);
539: AIT_FREE_VAL(&srv->srv_blob.dir);
540: return -1;
541: }
542: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
543: LOGERR;
544: close(srv->srv_blob.server.cli_sock);
545: AIT_FREE_VAL(&srv->srv_blob.dir);
546: return -1;
547: }
548: if (bind(srv->srv_blob.server.cli_sock, &srv->srv_blob.server.cli_sa.sa,
549: srv->srv_blob.server.cli_sa.sa.sa_len) == -1) {
550: LOGERR;
551: close(srv->srv_blob.server.cli_sock);
552: AIT_FREE_VAL(&srv->srv_blob.dir);
553: return -1;
554: }
555:
556: /* allocate pool for concurent clients */
557: srv->srv_blob.clients = calloc(srv->srv_numcli, sizeof(rpc_cli_t));
558: if (!srv->srv_blob.clients) {
559: LOGERR;
560: close(srv->srv_blob.server.cli_sock);
561: AIT_FREE_VAL(&srv->srv_blob.dir);
562: return -1;
563: } else
564: memset(srv->srv_blob.clients, 0, srv->srv_numcli * sizeof(rpc_cli_t));
565:
566: rpc_srv_registerCall(srv, NULL, CALL_BLOBSHUTDOWN, 0);
567: rpc_srv_registerCall(srv, NULL, CALL_BLOBCLIENTS, 1);
568: rpc_srv_registerCall(srv, NULL, CALL_BLOBVARS, 1);
569: rpc_srv_registerCall(srv, NULL, CALL_BLOBSTATE, 0);
570:
571: srv->srv_blob.state = enable; /* enable BLOB */
572: return 0;
573: }
574:
575: /*
576: * rpc_srv_endBLOBServer() - Destroy BLOB server, close all opened sockets and free resources
577: *
578: * @srv = RPC Server instance
579: * return: none
580: */
581: void
582: rpc_srv_endBLOBServer(rpc_srv_t * __restrict srv)
583: {
584: rpc_cli_t *c;
585: register int i;
586: rpc_blob_t *f;
587:
588: if (!srv || srv->srv_blob.state == disable)
589: return;
590: else
591: srv->srv_blob.state = kill;
592:
593: rpc_srv_unregisterCall(srv, NULL, CALL_BLOBSHUTDOWN);
594: rpc_srv_unregisterCall(srv, NULL, CALL_BLOBCLIENTS);
595: rpc_srv_unregisterCall(srv, NULL, CALL_BLOBVARS);
596: rpc_srv_unregisterCall(srv, NULL, CALL_BLOBSTATE);
597:
598: /* close all clients connections & server socket */
599: for (i = 0, c = srv->srv_blob.clients; i < srv->srv_numcli && c; i++, c++)
600: if (c->cli_sa.sa.sa_family)
601: shutdown(c->cli_sock, SHUT_RDWR);
602: close(srv->srv_blob.server.cli_sock);
603:
604: if (srv->srv_blob.clients) {
605: free(srv->srv_blob.clients);
606: srv->srv_blob.clients = NULL;
607: }
608:
609: /* detach blobs */
610: while ((f = srv->srv_blob.blobs)) {
611: srv->srv_blob.blobs = f->blob_next;
612: rpc_srv_blobFree(srv, f);
613: free(f);
614: }
615:
616: AIT_FREE_VAL(&srv->srv_blob.dir);
617:
618: /* at final, save disable BLOB service state */
619: srv->srv_blob.state = disable;
620: }
621:
622: /*
623: * rpc_srv_loopBLOB() - Execute Main BLOB server loop and wait for clients requests
624: *
625: * @srv = RPC Server instance
626: * return: -1 error or 0 ok, infinite loop ...
627: */
628: int
629: rpc_srv_loopBLOB(rpc_srv_t * __restrict srv)
630: {
631: socklen_t salen = sizeof(io_sockaddr_t);
632: register int i;
633: rpc_cli_t *c;
634: int ret;
635: pthread_attr_t attr;
636: struct pollfd pfd;
637:
638: if (!srv || srv->srv_blob.state == kill) {
639: rpc_SetErr(EINVAL, "Invalid parameter can`t start BLOB server");
640: return -1;
641: }
642:
643: if (listen(srv->srv_blob.server.cli_sock, SOMAXCONN) == -1) {
644: LOGERR;
645: return -1;
646: } else
647: fcntl(srv->srv_blob.server.cli_sock, F_SETFL,
648: fcntl(srv->srv_blob.server.cli_sock, F_GETFL) | O_NONBLOCK);
649:
650: pthread_attr_init(&attr);
651: pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
652:
653: pfd.fd = srv->srv_blob.server.cli_sock;
654: pfd.events = POLLIN | POLLPRI;
655: /* main BLOB loop */
656: while (srv->srv_blob.state != kill && srv->srv_kill != kill) {
657: for (c = srv->srv_blob.clients, i = 0; i < srv->srv_numcli && c; i++, c++)
658: if (!c->cli_sa.sa.sa_family)
659: break;
660: if (i >= srv->srv_numcli) {
661: #ifdef HAVE_PTHREAD_YIELD
662: pthread_yield();
663: #endif
664: usleep(1000000);
665: continue;
666: }
667:
668: if ((ret = poll(&pfd, 1, srv->srv_session.sess_timeout * 1000)) == -1 ||
669: pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
670: LOGERR;
671: ret = 1;
672: break;
673: } else if (!ret)
674: continue;
675:
676: c->cli_sock = accept(srv->srv_blob.server.cli_sock, &c->cli_sa.sa, &salen);
677: if (c->cli_sock == -1) {
678: LOGERR;
679: continue;
680: } else
681: c->cli_parent = srv;
682:
683: /* spawn dispatch thread for BLOB client */
684: c->cli_kill = enable;
685: if (pthread_create(&c->cli_tid, &attr, rpc_srv_dispatchVars, c)) {
686: LOGERR;
687: continue;
688: }
689: }
690:
691: srv->srv_blob.state = kill;
692:
693: pthread_attr_destroy(&attr);
694: return 0;
695: }
696: #endif
697:
698:
699: /*
700: * rpc_srv_initServer() - Init & create RPC Server
701: *
702: * @regProgID = ProgramID for authentication & recognition
703: * @regProcID = ProcessID for authentication & recognition
704: * @concurentClients = Concurent clients at same time to this server
705: * @netBuf = Network buffer length, if =0 == BUFSIZ (also meaning max RPC packet)
706: * @csHost = Host name or address for bind server, if NULL any address
707: * @Port = Port for bind server, if Port == 0 default port is selected
708: * return: NULL == error or !=NULL bind and created RPC server instance
709: */
710: rpc_srv_t *
711: rpc_srv_initServer(u_int regProgID, u_char regProcID, int concurentClients,
712: int netBuf, const char *csHost, u_short Port)
713: {
714: int n = 1;
715: rpc_srv_t *srv = NULL;
716: io_sockaddr_t sa;
717:
718: if (!concurentClients || !regProgID) {
719: rpc_SetErr(EINVAL, "Invalid parameters can`t init RPC server");
720: return NULL;
721: }
722: if (!io_gethostbyname(csHost, Port, &sa))
723: return NULL;
724: if (!Port)
725: Port = RPC_DEFPORT;
726: if (!netBuf)
727: netBuf = BUFSIZ;
728: else
729: netBuf = io_align(netBuf, 1); /* align netBuf length */
730:
731: srv = malloc(sizeof(rpc_srv_t));
732: if (!srv) {
733: LOGERR;
734: return NULL;
735: } else
736: memset(srv, 0, sizeof(rpc_srv_t));
737:
738: srv->srv_netbuf = netBuf;
739: srv->srv_session.sess_version = RPC_VERSION;
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:
828: free(c);
829: io_arrayDel((*psrv)->srv_clients, i, 0);
830: }
831: }
832: io_arrayDestroy(&(*psrv)->srv_clients);
833:
834: close((*psrv)->srv_server.cli_sock);
835:
836: /* detach exported calls */
837: TAILQ_FOREACH_SAFE(f, &(*psrv)->srv_funcs, func_node, tmp) {
838: io_freeVars(&f->func_vars);
839: AIT_FREE_VAL(&f->func_name);
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: if (!srv) {
858: rpc_SetErr(EINVAL, "Invalid parameter can`t start RPC server");
859: return -1;
860: }
861:
862: fcntl(srv->srv_server.cli_sock, F_SETFL,
863: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
864:
865: if (listen(srv->srv_server.cli_sock, io_arraySize(srv->srv_clients)) == -1) {
866: LOGERR;
867: return -1;
868: }
869:
870: if (!schedRead(srv->srv_root, acceptClients, srv, srv->srv_server.cli_sock, NULL, 0)) {
871: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
872: return -1;
873: }
874:
875: /* main rpc loop */
876: schedRun(srv->srv_root, &srv->srv_kill);
877: return 0;
878: }
879:
880:
881: /*
882: * rpc_srv_execCall() Execute registered call from RPC server
883: *
884: * @call = Register RPC call
885: * @rpc = IN RPC call structure
886: * @args = IN RPC calling arguments from RPC client
887: * return: -1 error, !=-1 ok
888: */
889: int
890: rpc_srv_execCall(rpc_func_t * __restrict call, struct tagRPCCall * __restrict rpc,
891: array_t * __restrict args)
892: {
893: rpc_callback_t func;
894:
895: if (!call || !rpc || !call->func_parent || !AIT_ADDR(&call->func_name)) {
896: rpc_SetErr(EINVAL, "Invalid parameter can`t exec function");
897: return -1;
898: }
899:
900: func = AIT_GET_LIKE(&call->func_name, rpc_callback_t);
901: return func(call, ntohs(rpc->call_argc), args);
902: }
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