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 1.9.2.12 2012/05/16 09:02:48 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: io_arrayDestroy(&arr);
172: return NULL;
173: }
174:
175: static void *
176: rxPacket(sched_task_t *task)
177: {
178: rpc_cli_t *c = TASK_ARG(task);
179: rpc_srv_t *s = c->cli_parent;
180: u_char *buf = AIT_GET_BUF(&c->cli_buf);
181: int len, rlen, noreply;
182: u_short crc, off = 0;
183: struct tagRPCCall *rpc;
184:
185: memset(buf, 0, AIT_LEN(&c->cli_buf));
186: rlen = recv(TASK_FD(task), buf, AIT_LEN(&c->cli_buf), 0);
187: if (rlen < 1) {
188: /* close connection */
189: schedEvent(TASK_ROOT(task), closeClient, c, 0, NULL, 0);
190: return NULL;
191: }
192:
193: do {
194: /* check RPC packet */
195: if (rlen < sizeof(struct tagRPCCall)) {
196: rpc_SetErr(ERPCMISMATCH, "Too short RPC packet");
197:
198: schedReadSelf(task);
199: return NULL;
200: } else
201: rpc = (struct tagRPCCall*) (buf + off);
202:
203: len = ntohs(rpc->call_len);
204: rlen -= len;
205:
206: /* check integrity of packet */
207: crc = ntohs(rpc->call_crc);
208: rpc->call_crc ^= rpc->call_crc;
209: if (crc != crcFletcher16((u_short*) (buf + off), len / 2)) {
210: rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet");
211:
212: off += len;
213: if (rlen < 1)
214: break;
215: else
216: continue;
217: }
218:
219: noreply = rpc->call_req.flags & RPC_NOREPLY;
220:
221: /* check RPC packet session info */
222: if (rpc_chkPktSession(&rpc->call_session, &s->srv_session)) {
223: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
224: rpc->call_argc ^= rpc->call_argc;
225: rpc->call_rep.ret = RPC_ERROR(-1);
226: rpc->call_rep.eno = RPC_ERROR(errno);
227: } else {
228: /* execute RPC call */
229: schedEvent(TASK_ROOT(task), execCall, TASK_ARG(task), off, NULL, 0);
230: }
231:
232: /* send RPC reply */
233: if (!noreply)
234: schedWrite(TASK_ROOT(task), txPacket, TASK_ARG(task), TASK_FD(task), rpc, len);
235:
236: off += len;
237: } while (rlen > 0);
238:
239: /* lets get next packet */
240: schedReadSelf(task);
241: return NULL;
242: }
243:
244: static void *
245: acceptClients(sched_task_t *task)
246: {
247: rpc_srv_t *srv = TASK_ARG(task);
248: rpc_cli_t *c = NULL;
249: register int i;
250: socklen_t salen = sizeof(io_sockaddr_t);
251:
252: /* check free slots for connect */
253: for (i = 0; i < io_arraySize(srv->srv_clients) &&
254: (c = io_array(srv->srv_clients, i, rpc_cli_t*)); i++);
255: if (c) /* no more free slots! */
256: goto end;
257: c = malloc(sizeof(rpc_cli_t));
258: if (!c) {
259: LOGERR;
260: srv->srv_kill = kill;
261: return NULL;
262: } else {
263: memset(c, 0, sizeof(rpc_cli_t));
264: io_arraySet(srv->srv_clients, i, c);
265: c->cli_id = i;
266: c->cli_parent = srv;
267: }
268:
269: /* alloc empty buffer */
270: AIT_SET_BUF2(&c->cli_buf, 0, srv->srv_netbuf);
271:
272: /* accept client */
273: c->cli_sock = accept(srv->srv_server.cli_sock, &c->cli_sa.sa, &salen);
274: if (c->cli_sock == -1) {
275: LOGERR;
276: AIT_FREE_VAL(&c->cli_buf);
277: io_arrayDel(srv->srv_clients, i, 42);
278: goto end;
279: } else
280: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
281:
282: schedRead(TASK_ROOT(task), rxPacket, c, c->cli_sock, NULL, 0);
283: end:
284: schedReadSelf(task);
285: return NULL;
286: }
287:
288: /* ------------------------------------------------------ */
289:
290: static void *
291: acceptBLOBClients(sched_task_t *task)
292: {
293: rpc_srv_t *srv = TASK_ARG(task);
294: rpc_cli_t *c = NULL;
295: register int i;
296: socklen_t salen = sizeof(io_sockaddr_t);
297:
298: /* check free slots for connect */
299: for (i = 0; i < io_arraySize(srv->srv_clients) &&
300: (c = io_array(srv->srv_clients, i, rpc_cli_t*)); i++);
301: if (c) /* no more free slots! */
302: goto end;
303: c = malloc(sizeof(rpc_cli_t));
304: if (!c) {
305: LOGERR;
306: srv->srv_kill = kill;
307: return NULL;
308: } else {
309: memset(c, 0, sizeof(rpc_cli_t));
310: io_arraySet(srv->srv_clients, i, c);
311: c->cli_id = i;
312: c->cli_parent = srv;
313: }
314:
315: /* alloc empty buffer */
316: AIT_SET_BUF2(&c->cli_buf, 0, srv->srv_netbuf);
317:
318: /* accept client */
319: c->cli_sock = accept(srv->srv_server.cli_sock, &c->cli_sa.sa, &salen);
320: if (c->cli_sock == -1) {
321: LOGERR;
322: AIT_FREE_VAL(&c->cli_buf);
323: io_arrayDel(srv->srv_clients, i, 42);
324: goto end;
325: } else
326: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
327:
328: schedRead(TASK_ROOT(task), rxPacket, c, c->cli_sock, NULL, 0);
329: end:
330: schedReadSelf(task);
331: return NULL;
332: }
333:
334: #if 0
335: static void *
336: txBLOB(sched_task_t *task)
337: {
338: u_char *buf = TASK_DATA(task);
339: struct tagBLOBHdr *blob = (struct tagBLOBHdr *) buf;
340: int wlen = sizeof(struct tagBLOBHdr);
341:
342: /* calculate CRC */
343: blob->hdr_crc ^= blob->hdr_crc;
344: blob->hdr_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
345:
346: /* send reply */
347: wlen = send(TASK_FD(task), buf, wlen, 0);
348: if (wlen == -1)
349: LOGERR;
350: else if (wlen != sizeof(struct tagBLOBHdr))
351: rpc_SetErr(EPROCUNAVAIL, "RPC reply, should be send %d bytes, "
352: "really sended %d bytes", sizeof(struct tagBLOBHdr), wlen);
353:
354: return NULL;
355: }
356:
357: static void *
358: rxBLOB(sched_task_t *task)
359: {
360: rpc_cli_t *c = TASK_ARG(task);
361: rpc_srv_t *s = c->cli_parent;
362: rpc_blob_t *b;
363: u_char *buf = TASK_DATA(task);
364: struct tagBLOBHdr *blob = (struct tagBLOBHdr *) buf;
365: int rlen;
366: u_short crc;
367: struct timespec ts;
368:
369: /* check for disable service at this moment? */
370: if (!s || s->srv_blob.state == disable) {
371: usleep(100000);
372: #ifdef HAVE_PTHREAD_YIELD
373: pthread_yield();
374: #endif
375: schedRead(TASK_ROOT(task), rxBLOB, TASK_ARG(task), TASK_FD(task),
376: TASK_DATA(task), TASK_DATLEN(task));
377: return NULL;
378: }
379:
380: memset(buf, 0, TASK_DATLEN(task));
381: rlen = recv(TASK_FD(task), buf, TASK_DATLEN(task), 0);
382: if (rlen == -1) {
383: LOGERR;
384: c->cli_kill = kill;
385: return NULL;
386: } else if (!rlen) { /* receive EOF */
387: c->cli_kill = kill;
388: return NULL;
389: }
390:
391: if (rlen < sizeof(struct tagBLOBHdr)) {
392: rpc_SetErr(ERPCMISMATCH, "Too short BLOB packet");
393: schedRead(TASK_ROOT(task), rxBLOB, TASK_ARG(task), TASK_FD(task),
394: TASK_DATA(task), TASK_DATLEN(task));
395: return NULL;
396: }
397:
398: /* check integrity of packet */
399: crc = ntohs(blob->hdr_crc);
400: blob->hdr_crc ^= blob->hdr_crc;
401: if (crc != crcFletcher16((u_short*) buf, rlen / 2)) {
402: rpc_SetErr(ERPCMISMATCH, "Bad CRC BLOB packet");
403: schedRead(TASK_ROOT(task), rxBLOB, TASK_ARG(task), TASK_FD(task),
404: TASK_DATA(task), TASK_DATLEN(task));
405: return NULL;
406: }
407:
408: /* check RPC packet session info */
409: if ((crc = rpc_chkPktSession(&blob->hdr_session, &s->srv_session))) {
410: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
411: blob->hdr_cmd = error;
412: goto end;
413: } else {
414: /* change socket timeout from last packet */
415: ts.tv_sec = blob->hdr_session.sess_timeout;
416: ts.tv_nsec = 0;
417: schedPolling(TASK_ROOT(task), &ts, NULL);
418: }
419:
420: /* Go to proceed packet ... */
421: switch (blob->hdr_cmd) {
422: case get:
423: if (!(b = rpc_srv_getBLOB(s, ntohl(blob->hdr_var)))) {
424: rpc_SetErr(EINVAL, "Var=%x not found", ntohl(blob->hdr_var));
425: blob->hdr_cmd = no;
426: blob->hdr_ret = RPC_ERROR(-1);
427: break;
428: } else
429: blob->hdr_len = htonl(b->blob_len);
430:
431: if (rpc_srv_blobMap(s, b) != -1) {
432: /* deliver BLOB variable to client */
433: blob->hdr_ret = htonl(rpc_srv_sendBLOB(c, b));
434: rpc_srv_blobUnmap(b);
435: } else {
436: blob->hdr_cmd = error;
437: blob->hdr_ret = RPC_ERROR(-1);
438: }
439: break;
440: case set:
441: if ((b = rpc_srv_registerBLOB(s, ntohl(blob->hdr_len)))) {
442: /* set new BLOB variable for reply :) */
443: blob->hdr_var = htonl(b->blob_var);
444:
445: /* receive BLOB from client */
446: blob->hdr_ret = htonl(rpc_srv_recvBLOB(c, b));
447: rpc_srv_blobUnmap(b);
448: } else {
449: blob->hdr_cmd = error;
450: blob->hdr_ret = RPC_ERROR(-1);
451: }
452: break;
453: case unset:
454: if (rpc_srv_unregisterBLOB(s, blob->hdr_var) == -1) {
455: blob->hdr_cmd = error;
456: blob->hdr_ret = RPC_ERROR(-1);
457: }
458: break;
459: default:
460: rpc_SetErr(EPROCUNAVAIL, "Unsupported BLOB command %d", blob->hdr_cmd);
461: blob->hdr_cmd = error;
462: blob->hdr_ret = RPC_ERROR(-1);
463: }
464:
465: end:
466: schedWrite(TASK_ROOT(task), txBLOB, TASK_ARG(task), TASK_FD(task),
467: TASK_DATA(task), TASK_DATLEN(task));
468: schedRead(TASK_ROOT(task), rxBLOB, TASK_ARG(task), TASK_FD(task),
469: TASK_DATA(task), TASK_DATLEN(task));
470: return NULL;
471: }
472:
473: static void *
474: rpc_srv_dispatchVars(void *arg)
475: {
476: rpc_cli_t *c = arg;
477: rpc_srv_t *s;
478: sched_root_task_t *root;
479: u_char *buf;
480: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
481:
482: if (!arg) {
483: rpc_SetErr(EINVAL, "Invalid parameter can`t procced BLOB");
484: return NULL;
485: } else
486: s = c->cli_parent;
487:
488: /* allocate net buffer */
489: buf = malloc(sizeof(struct tagBLOBHdr));
490: if (!buf) {
491: LOGERR;
492: return NULL;
493: }
494:
495: root = schedBegin();
496: if (!root) {
497: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
498: free(buf);
499: return NULL;
500: } else {
501: schedTermCondition(root, kill);
502: schedPolling(root, &ts, NULL);
503: }
504:
505: schedRead(root, rxBLOB, c, c->cli_sock, buf, sizeof(struct tagBLOBHdr));
506:
507: schedRun(root, (void*) &c->cli_kill);
508: schedEnd(&root);
509:
510: shutdown(c->cli_sock, SHUT_RDWR);
511: close(c->cli_sock);
512: memset(c, 0, sizeof(rpc_cli_t));
513: free(buf);
514: return NULL;
515: }
516: #endif
517:
518: /* ------------------------------------------------------ */
519:
520: /*
521: * rpc_srv_initBLOBServer() - Init & create BLOB Server
522: *
523: * @srv = RPC server instance
524: * @Port = Port for bind server, if Port == 0 default port is selected
525: * @diskDir = Disk place for BLOB file objects
526: * return: -1 == error or 0 bind and created BLOB server instance
527: */
528: int
529: rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, u_short Port, const char *diskDir)
530: {
531: int n = 1;
532: io_sockaddr_t sa;
533:
534: if (!srv || srv->srv_kill) {
535: rpc_SetErr(EINVAL, "Invalid parameters can`t init BLOB server");
536: return -1;
537: }
538:
539: memset(&srv->srv_blob, 0, sizeof srv->srv_blob);
540: if (access(diskDir, R_OK | W_OK) == -1) {
541: LOGERR;
542: return -1;
543: } else
544: AIT_SET_STR(&srv->srv_blob.dir, diskDir);
545:
546: /* init blob list */
547: TAILQ_INIT(&srv->srv_blob.blobs);
548:
549: srv->srv_blob.server.cli_parent = srv;
550:
551: memcpy(&srv->srv_blob.server.cli_sa, &srv->srv_server.cli_sa, sizeof(io_sockaddr_t));
552: switch (sa.sa.sa_family) {
553: case AF_INET:
554: sa.sin.sin_port = htons(Port ? Port : ntohs(sa.sin.sin_port) + 1);
555: break;
556: case AF_INET6:
557: sa.sin6.sin6_port = htons(Port ? Port : ntohs(sa.sin6.sin6_port) + 1);
558: break;
559: case AF_LOCAL:
560: strlcat(sa.sun.sun_path, ".blob", sizeof sa.sun.sun_path);
561: break;
562: default:
563: AIT_FREE_VAL(&srv->srv_blob.dir);
564: return -1;
565: }
566:
567: /* create BLOB server socket */
568: srv->srv_blob.server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, SOCK_STREAM, 0);
569: if (srv->srv_blob.server.cli_sock == -1) {
570: LOGERR;
571: AIT_FREE_VAL(&srv->srv_blob.dir);
572: return -1;
573: }
574: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
575: LOGERR;
576: close(srv->srv_blob.server.cli_sock);
577: AIT_FREE_VAL(&srv->srv_blob.dir);
578: return -1;
579: }
580: n = srv->srv_netbuf;
581: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
582: LOGERR;
583: close(srv->srv_blob.server.cli_sock);
584: AIT_FREE_VAL(&srv->srv_blob.dir);
585: return -1;
586: }
587: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
588: LOGERR;
589: close(srv->srv_blob.server.cli_sock);
590: AIT_FREE_VAL(&srv->srv_blob.dir);
591: return -1;
592: }
593: if (bind(srv->srv_blob.server.cli_sock, &srv->srv_blob.server.cli_sa.sa,
594: srv->srv_blob.server.cli_sa.sa.sa_len) == -1) {
595: LOGERR;
596: close(srv->srv_blob.server.cli_sock);
597: AIT_FREE_VAL(&srv->srv_blob.dir);
598: return -1;
599: }
600:
601: /* allocate pool for concurent blob clients */
602: srv->srv_blob.clients = io_arrayInit(io_arraySize(srv->srv_clients));
603: if (!srv->srv_blob.clients) {
604: rpc_SetErr(io_GetErrno(), "%s", io_GetError());
605: close(srv->srv_blob.server.cli_sock);
606: AIT_FREE_VAL(&srv->srv_blob.dir);
607: return -1;
608: }
609:
610: /* init blob scheduler */
611: srv->srv_blob.root = schedBegin();
612: if (!srv->srv_blob.root) {
613: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
614: io_arrayDestroy(&srv->srv_blob.clients);
615: close(srv->srv_blob.server.cli_sock);
616: AIT_FREE_VAL(&srv->srv_blob.dir);
617: return -1;
618: }
619:
620: return 0;
621: }
622:
623: /*
624: * rpc_srv_endBLOBServer() - Destroy BLOB server, close all opened sockets and free resources
625: *
626: * @srv = RPC Server instance
627: * return: none
628: */
629: void
630: rpc_srv_endBLOBServer(rpc_srv_t * __restrict srv)
631: {
632: rpc_cli_t *c;
633: register int i;
634: rpc_blob_t *b, *tmp;
635:
636: if (!srv)
637: return;
638:
639: /* close all clients connections & server socket */
640: for (i = 0; i < io_arraySize(srv->srv_blob.clients); i++) {
641: c = io_array(srv->srv_blob.clients, i, rpc_cli_t*);
642: if (c) {
643: shutdown(c->cli_sock, SHUT_RDWR);
644: close(c->cli_sock);
645:
646: io_arrayDel(srv->srv_blob.clients, i, 42);
647: }
648: }
649: io_arrayDestroy(&srv->srv_blob.clients);
650:
651: close(srv->srv_blob.server.cli_sock);
652:
653: /* detach blobs */
654: TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) {
655: TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node);
656:
657: rpc_srv_blobFree(srv, b);
658: free(b);
659: }
660:
661: schedEnd(&srv->srv_blob.root);
662: AIT_FREE_VAL(&srv->srv_blob.dir);
663:
664: srv->srv_blob.kill = 1;
665: }
666:
667: /*
668: * rpc_srv_loopBLOBServer() - Execute Main BLOB server loop and wait for clients requests
669: *
670: * @srv = RPC Server instance
671: * return: -1 error or 0 ok, infinite loop ...
672: */
673: int
674: rpc_srv_loopBLOBServer(rpc_srv_t * __restrict srv)
675: {
676: if (!srv || srv->srv_kill) {
677: rpc_SetErr(EINVAL, "Invalid parameter can`t start BLOB server");
678: return -1;
679: }
680:
681: fcntl(srv->srv_blob.server.cli_sock, F_SETFL,
682: fcntl(srv->srv_blob.server.cli_sock, F_GETFL) | O_NONBLOCK);
683:
684: if (listen(srv->srv_blob.server.cli_sock, io_arraySize(srv->srv_blob.clients)) == -1) {
685: LOGERR;
686: return -1;
687: }
688:
689: if (!schedRead(srv->srv_blob.root, acceptBLOBClients, srv,
690: srv->srv_blob.server.cli_sock, NULL, 0)) {
691: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
692: return -1;
693: }
694:
695: #if 0
696: for (c = srv->srv_blob.clients, i = 0; i < srv->srv_numcli && c; i++, c++)
697: if (!c->cli_sa.sa.sa_family)
698: break;
699: if (i >= srv->srv_numcli) {
700: #ifdef HAVE_PTHREAD_YIELD
701: pthread_yield();
702: #endif
703: usleep(1000000);
704: continue;
705: }
706:
707: c->cli_sock = accept(srv->srv_blob.server.cli_sock, &c->cli_sa.sa, &salen);
708: if (c->cli_sock == -1) {
709: LOGERR;
710: continue;
711: } else
712: c->cli_parent = srv;
713: }
714: #endif
715:
716: /* main rpc loop */
717: schedRun(srv->srv_blob.root, &srv->srv_blob.kill);
718: return 0;
719: }
720:
721:
722: /*
723: * rpc_srv_initServer() - Init & create RPC Server
724: *
725: * @regProgID = ProgramID for authentication & recognition
726: * @regProcID = ProcessID for authentication & recognition
727: * @concurentClients = Concurent clients at same time to this server
728: * @netBuf = Network buffer length, if =0 == BUFSIZ (also meaning max RPC packet)
729: * @csHost = Host name or address for bind server, if NULL any address
730: * @Port = Port for bind server, if Port == 0 default port is selected
731: * return: NULL == error or !=NULL bind and created RPC server instance
732: */
733: rpc_srv_t *
734: rpc_srv_initServer(u_int regProgID, u_char regProcID, int concurentClients,
735: int netBuf, const char *csHost, u_short Port)
736: {
737: int n = 1;
738: rpc_srv_t *srv = NULL;
739: io_sockaddr_t sa;
740:
741: if (!concurentClients || !regProgID) {
742: rpc_SetErr(EINVAL, "Invalid parameters can`t init RPC server");
743: return NULL;
744: }
745: if (!io_gethostbyname(csHost, Port, &sa))
746: return NULL;
747: if (!Port)
748: Port = RPC_DEFPORT;
749: if (!netBuf)
750: netBuf = BUFSIZ;
751: else
752: netBuf = io_align(netBuf, 1); /* align netBuf length */
753:
754: srv = malloc(sizeof(rpc_srv_t));
755: if (!srv) {
756: LOGERR;
757: return NULL;
758: } else
759: memset(srv, 0, sizeof(rpc_srv_t));
760:
761: srv->srv_netbuf = netBuf;
762: srv->srv_session.sess_version = RPC_VERSION;
763: srv->srv_session.sess_program = regProgID;
764: srv->srv_session.sess_process = regProcID;
765:
766: srv->srv_server.cli_parent = srv;
767: memcpy(&srv->srv_server.cli_sa, &sa, sizeof srv->srv_server.cli_sa);
768:
769: /* init functions list */
770: TAILQ_INIT(&srv->srv_funcs);
771:
772: /* init scheduler */
773: srv->srv_root = schedBegin();
774: if (!srv->srv_root) {
775: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
776: free(srv);
777: return NULL;
778: }
779:
780: /* init pool for clients */
781: srv->srv_clients = io_arrayInit(concurentClients);
782: if (!srv->srv_clients) {
783: rpc_SetErr(io_GetErrno(), "%s", io_GetError());
784: schedEnd(&srv->srv_root);
785: free(srv);
786: return NULL;
787: }
788:
789: /* create server socket */
790: srv->srv_server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, SOCK_STREAM, 0);
791: if (srv->srv_server.cli_sock == -1) {
792: LOGERR;
793: io_arrayDestroy(&srv->srv_clients);
794: schedEnd(&srv->srv_root);
795: free(srv);
796: return NULL;
797: }
798: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
799: LOGERR;
800: goto err;
801: }
802: n = srv->srv_netbuf;
803: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
804: LOGERR;
805: goto err;
806: }
807: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
808: LOGERR;
809: goto err;
810: }
811: if (bind(srv->srv_server.cli_sock, &srv->srv_server.cli_sa.sa,
812: srv->srv_server.cli_sa.sa.sa_len) == -1) {
813: LOGERR;
814: goto err;
815: }
816:
817: return srv;
818: err: /* error condition */
819: close(srv->srv_server.cli_sock);
820: io_arrayDestroy(&srv->srv_clients);
821: schedEnd(&srv->srv_root);
822: free(srv);
823: return NULL;
824: }
825:
826: /*
827: * rpc_srv_endServer() - Destroy RPC server, close all opened sockets and free resources
828: *
829: * @psrv = RPC Server instance
830: * return: none
831: */
832: void
833: rpc_srv_endServer(rpc_srv_t ** __restrict psrv)
834: {
835: rpc_cli_t *c;
836: register int i;
837: rpc_func_t *f, *tmp;
838:
839: if (!psrv || !*psrv) {
840: rpc_SetErr(EINVAL, "Can`t destroy server because parameter is null!");
841: return;
842: }
843:
844: if (!(*psrv)->srv_blob.kill)
845: rpc_srv_endBLOBServer(*psrv);
846:
847: /* close all clients connections & server socket */
848: for (i = 0; i < io_arraySize((*psrv)->srv_clients); i++) {
849: c = io_array((*psrv)->srv_clients, i, rpc_cli_t*);
850: if (c) {
851: shutdown(c->cli_sock, SHUT_RDWR);
852: close(c->cli_sock);
853:
854: io_arrayDel((*psrv)->srv_clients, i, 42);
855: }
856: }
857: io_arrayDestroy(&(*psrv)->srv_clients);
858:
859: close((*psrv)->srv_server.cli_sock);
860:
861: /* detach exported calls */
862: TAILQ_FOREACH_SAFE(f, &(*psrv)->srv_funcs, func_node, tmp) {
863: TAILQ_REMOVE(&(*psrv)->srv_funcs, f, func_node);
864:
865: io_freeVars(&f->func_vars);
866: AIT_FREE_VAL(&f->func_name);
867: free(f);
868: }
869:
870: schedEnd(&(*psrv)->srv_root);
871: free(*psrv);
872: *psrv = NULL;
873: }
874:
875: /*
876: * rpc_srv_loopServer() - Execute Main server loop and wait for clients requests
877: *
878: * @srv = RPC Server instance
879: * return: -1 error or 0 ok, infinite loop ...
880: */
881: int
882: rpc_srv_loopServer(rpc_srv_t * __restrict srv)
883: {
884: if (!srv) {
885: rpc_SetErr(EINVAL, "Invalid parameter can`t start RPC server");
886: return -1;
887: }
888:
889: fcntl(srv->srv_server.cli_sock, F_SETFL,
890: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
891:
892: if (listen(srv->srv_server.cli_sock, io_arraySize(srv->srv_clients)) == -1) {
893: LOGERR;
894: return -1;
895: }
896:
897: if (!schedRead(srv->srv_root, acceptClients, srv, srv->srv_server.cli_sock, NULL, 0)) {
898: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
899: return -1;
900: }
901:
902: /* main rpc loop */
903: schedRun(srv->srv_root, &srv->srv_kill);
904: return 0;
905: }
906:
907:
908: /*
909: * rpc_srv_execCall() Execute registered call from RPC server
910: *
911: * @call = Register RPC call
912: * @rpc = IN RPC call structure
913: * @args = IN RPC calling arguments from RPC client
914: * return: -1 error, !=-1 ok
915: */
916: int
917: rpc_srv_execCall(rpc_func_t * __restrict call, struct tagRPCCall * __restrict rpc,
918: array_t * __restrict args)
919: {
920: rpc_callback_t func;
921:
922: if (!call || !rpc || !call->func_parent || !AIT_ADDR(&call->func_name)) {
923: rpc_SetErr(EINVAL, "Invalid parameter can`t exec function");
924: return -1;
925: }
926:
927: func = AIT_GET_LIKE(&call->func_name, rpc_callback_t);
928: return func(call, ntohs(rpc->call_argc), args);
929: }
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