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 1.9.2.11 2012/05/16 07:54:49 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: #if 0
289: static void *
290: txBLOB(sched_task_t *task)
291: {
292: u_char *buf = TASK_DATA(task);
293: struct tagBLOBHdr *blob = (struct tagBLOBHdr *) buf;
294: int wlen = sizeof(struct tagBLOBHdr);
295:
296: /* calculate CRC */
297: blob->hdr_crc ^= blob->hdr_crc;
298: blob->hdr_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
299:
300: /* send reply */
301: wlen = send(TASK_FD(task), buf, wlen, 0);
302: if (wlen == -1)
303: LOGERR;
304: else if (wlen != sizeof(struct tagBLOBHdr))
305: rpc_SetErr(EPROCUNAVAIL, "RPC reply, should be send %d bytes, "
306: "really sended %d bytes", sizeof(struct tagBLOBHdr), wlen);
307:
308: return NULL;
309: }
310:
311: static void *
312: rxBLOB(sched_task_t *task)
313: {
314: rpc_cli_t *c = TASK_ARG(task);
315: rpc_srv_t *s = c->cli_parent;
316: rpc_blob_t *b;
317: u_char *buf = TASK_DATA(task);
318: struct tagBLOBHdr *blob = (struct tagBLOBHdr *) buf;
319: int rlen;
320: u_short crc;
321: struct timespec ts;
322:
323: /* check for disable service at this moment? */
324: if (!s || s->srv_blob.state == disable) {
325: usleep(100000);
326: #ifdef HAVE_PTHREAD_YIELD
327: pthread_yield();
328: #endif
329: schedRead(TASK_ROOT(task), rxBLOB, TASK_ARG(task), TASK_FD(task),
330: TASK_DATA(task), TASK_DATLEN(task));
331: return NULL;
332: }
333:
334: memset(buf, 0, TASK_DATLEN(task));
335: rlen = recv(TASK_FD(task), buf, TASK_DATLEN(task), 0);
336: if (rlen == -1) {
337: LOGERR;
338: c->cli_kill = kill;
339: return NULL;
340: } else if (!rlen) { /* receive EOF */
341: c->cli_kill = kill;
342: return NULL;
343: }
344:
345: if (rlen < sizeof(struct tagBLOBHdr)) {
346: rpc_SetErr(ERPCMISMATCH, "Too short BLOB packet");
347: schedRead(TASK_ROOT(task), rxBLOB, TASK_ARG(task), TASK_FD(task),
348: TASK_DATA(task), TASK_DATLEN(task));
349: return NULL;
350: }
351:
352: /* check integrity of packet */
353: crc = ntohs(blob->hdr_crc);
354: blob->hdr_crc ^= blob->hdr_crc;
355: if (crc != crcFletcher16((u_short*) buf, rlen / 2)) {
356: rpc_SetErr(ERPCMISMATCH, "Bad CRC BLOB packet");
357: schedRead(TASK_ROOT(task), rxBLOB, TASK_ARG(task), TASK_FD(task),
358: TASK_DATA(task), TASK_DATLEN(task));
359: return NULL;
360: }
361:
362: /* check RPC packet session info */
363: if ((crc = rpc_chkPktSession(&blob->hdr_session, &s->srv_session))) {
364: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
365: blob->hdr_cmd = error;
366: goto end;
367: } else {
368: /* change socket timeout from last packet */
369: ts.tv_sec = blob->hdr_session.sess_timeout;
370: ts.tv_nsec = 0;
371: schedPolling(TASK_ROOT(task), &ts, NULL);
372: }
373:
374: /* Go to proceed packet ... */
375: switch (blob->hdr_cmd) {
376: case get:
377: if (!(b = rpc_srv_getBLOB(s, ntohl(blob->hdr_var)))) {
378: rpc_SetErr(EINVAL, "Var=%x not found", ntohl(blob->hdr_var));
379: blob->hdr_cmd = no;
380: blob->hdr_ret = RPC_ERROR(-1);
381: break;
382: } else
383: blob->hdr_len = htonl(b->blob_len);
384:
385: if (rpc_srv_blobMap(s, b) != -1) {
386: /* deliver BLOB variable to client */
387: blob->hdr_ret = htonl(rpc_srv_sendBLOB(c, b));
388: rpc_srv_blobUnmap(b);
389: } else {
390: blob->hdr_cmd = error;
391: blob->hdr_ret = RPC_ERROR(-1);
392: }
393: break;
394: case set:
395: if ((b = rpc_srv_registerBLOB(s, ntohl(blob->hdr_len)))) {
396: /* set new BLOB variable for reply :) */
397: blob->hdr_var = htonl(b->blob_var);
398:
399: /* receive BLOB from client */
400: blob->hdr_ret = htonl(rpc_srv_recvBLOB(c, b));
401: rpc_srv_blobUnmap(b);
402: } else {
403: blob->hdr_cmd = error;
404: blob->hdr_ret = RPC_ERROR(-1);
405: }
406: break;
407: case unset:
408: if (rpc_srv_unregisterBLOB(s, blob->hdr_var) == -1) {
409: blob->hdr_cmd = error;
410: blob->hdr_ret = RPC_ERROR(-1);
411: }
412: break;
413: default:
414: rpc_SetErr(EPROCUNAVAIL, "Unsupported BLOB command %d", blob->hdr_cmd);
415: blob->hdr_cmd = error;
416: blob->hdr_ret = RPC_ERROR(-1);
417: }
418:
419: end:
420: schedWrite(TASK_ROOT(task), txBLOB, TASK_ARG(task), TASK_FD(task),
421: TASK_DATA(task), TASK_DATLEN(task));
422: schedRead(TASK_ROOT(task), rxBLOB, TASK_ARG(task), TASK_FD(task),
423: TASK_DATA(task), TASK_DATLEN(task));
424: return NULL;
425: }
426:
427: static void *
428: rpc_srv_dispatchVars(void *arg)
429: {
430: rpc_cli_t *c = arg;
431: rpc_srv_t *s;
432: sched_root_task_t *root;
433: u_char *buf;
434: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
435:
436: if (!arg) {
437: rpc_SetErr(EINVAL, "Invalid parameter can`t procced BLOB");
438: return NULL;
439: } else
440: s = c->cli_parent;
441:
442: /* allocate net buffer */
443: buf = malloc(sizeof(struct tagBLOBHdr));
444: if (!buf) {
445: LOGERR;
446: return NULL;
447: }
448:
449: root = schedBegin();
450: if (!root) {
451: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
452: free(buf);
453: return NULL;
454: } else {
455: schedTermCondition(root, kill);
456: schedPolling(root, &ts, NULL);
457: }
458:
459: schedRead(root, rxBLOB, c, c->cli_sock, buf, sizeof(struct tagBLOBHdr));
460:
461: schedRun(root, (void*) &c->cli_kill);
462: schedEnd(&root);
463:
464: shutdown(c->cli_sock, SHUT_RDWR);
465: close(c->cli_sock);
466: memset(c, 0, sizeof(rpc_cli_t));
467: free(buf);
468: return NULL;
469: }
470: #endif
471:
472:
473: /*
474: * rpc_srv_initBLOBServer() - Init & create BLOB Server
475: *
476: * @srv = RPC server instance
477: * @Port = Port for bind server, if Port == 0 default port is selected
478: * @diskDir = Disk place for BLOB file objects
479: * return: -1 == error or 0 bind and created BLOB server instance
480: */
481: int
482: rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, u_short Port, const char *diskDir)
483: {
484: int n = 1;
485: io_sockaddr_t sa;
486:
487: if (!srv) {
488: rpc_SetErr(EINVAL, "Invalid parameters can`t init BLOB server");
489: return -1;
490: }
491: if (srv->srv_blob.state) {
492: rpc_SetErr(EPERM, "Already started BLOB server!");
493: return 0;
494: }
495:
496: memset(&srv->srv_blob, 0, sizeof srv->srv_blob);
497: if (access(diskDir, R_OK | W_OK) == -1) {
498: LOGERR;
499: return -1;
500: } else
501: AIT_SET_STR(&srv->srv_blob.dir, diskDir);
502:
503: /* init blob list */
504: TAILQ_INIT(&srv->srv_blob.blobs);
505:
506: srv->srv_blob.server.cli_parent = srv;
507:
508: memcpy(&srv->srv_blob.server.cli_sa, &srv->srv_server.cli_sa, sizeof(io_sockaddr_t));
509: switch (sa.sa.sa_family) {
510: case AF_INET:
511: sa.sin.sin_port = htons(Port ? Port : ntohs(sa.sin.sin_port) + 1);
512: break;
513: case AF_INET6:
514: sa.sin6.sin6_port = htons(Port ? Port : ntohs(sa.sin6.sin6_port) + 1);
515: break;
516: case AF_LOCAL:
517: strlcat(sa.sun.sun_path, ".blob", sizeof sa.sun.sun_path);
518: break;
519: default:
520: AIT_FREE_VAL(&srv->srv_blob.dir);
521: return -1;
522: }
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 blob clients */
559: srv->srv_blob.clients = io_arrayInit(io_arraySize(srv->srv_clients));
560: if (!srv->srv_blob.clients) {
561: rpc_SetErr(io_GetErrno(), "%s", io_GetError());
562: close(srv->srv_blob.server.cli_sock);
563: AIT_FREE_VAL(&srv->srv_blob.dir);
564: return -1;
565: }
566:
567: srv->srv_blob.state = enable; /* enable BLOB */
568: return 0;
569: }
570:
571: /*
572: * rpc_srv_endBLOBServer() - Destroy BLOB server, close all opened sockets and free resources
573: *
574: * @srv = RPC Server instance
575: * return: none
576: */
577: void
578: rpc_srv_endBLOBServer(rpc_srv_t * __restrict srv)
579: {
580: rpc_cli_t *c;
581: register int i;
582: rpc_blob_t *b, *tmp;
583:
584: if (!srv || srv->srv_blob.state == disable)
585: return;
586: else
587: srv->srv_blob.state = kill;
588:
589: /* close all clients connections & server socket */
590: for (i = 0; i < io_arraySize(srv->srv_blob.clients); i++) {
591: c = io_array(srv->srv_blob.clients, i, rpc_cli_t*);
592: if (c) {
593: shutdown(c->cli_sock, SHUT_RDWR);
594: close(c->cli_sock);
595:
596: io_arrayDel(srv->srv_blob.clients, i, 42);
597: }
598: }
599: io_arrayDestroy(&srv->srv_blob.clients);
600:
601: close(srv->srv_blob.server.cli_sock);
602:
603: /* detach blobs */
604: TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) {
605: TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node);
606:
607: rpc_srv_blobFree(srv, b);
608: free(b);
609: }
610:
611: AIT_FREE_VAL(&srv->srv_blob.dir);
612:
613: /* at final, save disable BLOB service state */
614: srv->srv_blob.state = disable;
615: }
616:
617: #if 0
618: /*
619: * rpc_srv_loopBLOB() - Execute Main BLOB server loop and wait for clients requests
620: *
621: * @srv = RPC Server instance
622: * return: -1 error or 0 ok, infinite loop ...
623: */
624: int
625: rpc_srv_loopBLOB(rpc_srv_t * __restrict srv)
626: {
627: socklen_t salen = sizeof(io_sockaddr_t);
628: register int i;
629: rpc_cli_t *c;
630: int ret;
631: pthread_attr_t attr;
632: struct pollfd pfd;
633:
634: if (!srv || srv->srv_blob.state == kill) {
635: rpc_SetErr(EINVAL, "Invalid parameter can`t start BLOB server");
636: return -1;
637: }
638:
639: if (listen(srv->srv_blob.server.cli_sock, SOMAXCONN) == -1) {
640: LOGERR;
641: return -1;
642: } else
643: fcntl(srv->srv_blob.server.cli_sock, F_SETFL,
644: fcntl(srv->srv_blob.server.cli_sock, F_GETFL) | O_NONBLOCK);
645:
646: pthread_attr_init(&attr);
647: pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
648:
649: pfd.fd = srv->srv_blob.server.cli_sock;
650: pfd.events = POLLIN | POLLPRI;
651: /* main BLOB loop */
652: while (srv->srv_blob.state != kill && srv->srv_kill != kill) {
653: for (c = srv->srv_blob.clients, i = 0; i < srv->srv_numcli && c; i++, c++)
654: if (!c->cli_sa.sa.sa_family)
655: break;
656: if (i >= srv->srv_numcli) {
657: #ifdef HAVE_PTHREAD_YIELD
658: pthread_yield();
659: #endif
660: usleep(1000000);
661: continue;
662: }
663:
664: if ((ret = poll(&pfd, 1, srv->srv_session.sess_timeout * 1000)) == -1 ||
665: pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
666: LOGERR;
667: ret = 1;
668: break;
669: } else if (!ret)
670: continue;
671:
672: c->cli_sock = accept(srv->srv_blob.server.cli_sock, &c->cli_sa.sa, &salen);
673: if (c->cli_sock == -1) {
674: LOGERR;
675: continue;
676: } else
677: c->cli_parent = srv;
678:
679: /* spawn dispatch thread for BLOB client */
680: c->cli_kill = enable;
681: if (pthread_create(&c->cli_tid, &attr, rpc_srv_dispatchVars, c)) {
682: LOGERR;
683: continue;
684: }
685: }
686:
687: srv->srv_blob.state = kill;
688:
689: pthread_attr_destroy(&attr);
690: return 0;
691: }
692: #endif
693:
694:
695: /*
696: * rpc_srv_initServer() - Init & create RPC Server
697: *
698: * @regProgID = ProgramID for authentication & recognition
699: * @regProcID = ProcessID for authentication & recognition
700: * @concurentClients = Concurent clients at same time to this server
701: * @netBuf = Network buffer length, if =0 == BUFSIZ (also meaning max RPC packet)
702: * @csHost = Host name or address for bind server, if NULL any address
703: * @Port = Port for bind server, if Port == 0 default port is selected
704: * return: NULL == error or !=NULL bind and created RPC server instance
705: */
706: rpc_srv_t *
707: rpc_srv_initServer(u_int regProgID, u_char regProcID, int concurentClients,
708: int netBuf, const char *csHost, u_short Port)
709: {
710: int n = 1;
711: rpc_srv_t *srv = NULL;
712: io_sockaddr_t sa;
713:
714: if (!concurentClients || !regProgID) {
715: rpc_SetErr(EINVAL, "Invalid parameters can`t init RPC server");
716: return NULL;
717: }
718: if (!io_gethostbyname(csHost, Port, &sa))
719: return NULL;
720: if (!Port)
721: Port = RPC_DEFPORT;
722: if (!netBuf)
723: netBuf = BUFSIZ;
724: else
725: netBuf = io_align(netBuf, 1); /* align netBuf length */
726:
727: srv = malloc(sizeof(rpc_srv_t));
728: if (!srv) {
729: LOGERR;
730: return NULL;
731: } else
732: memset(srv, 0, sizeof(rpc_srv_t));
733:
734: srv->srv_netbuf = netBuf;
735: srv->srv_session.sess_version = RPC_VERSION;
736: srv->srv_session.sess_program = regProgID;
737: srv->srv_session.sess_process = regProcID;
738:
739: srv->srv_server.cli_parent = srv;
740: memcpy(&srv->srv_server.cli_sa, &sa, sizeof srv->srv_server.cli_sa);
741:
742: /* init functions list */
743: TAILQ_INIT(&srv->srv_funcs);
744:
745: /* init scheduler */
746: srv->srv_root = schedBegin();
747: if (!srv->srv_root) {
748: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
749: free(srv);
750: return NULL;
751: }
752:
753: /* init pool for clients */
754: srv->srv_clients = io_arrayInit(concurentClients);
755: if (!srv->srv_clients) {
756: rpc_SetErr(io_GetErrno(), "%s", io_GetError());
757: schedEnd(&srv->srv_root);
758: free(srv);
759: return NULL;
760: }
761:
762: /* create server socket */
763: srv->srv_server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, SOCK_STREAM, 0);
764: if (srv->srv_server.cli_sock == -1) {
765: LOGERR;
766: io_arrayDestroy(&srv->srv_clients);
767: schedEnd(&srv->srv_root);
768: free(srv);
769: return NULL;
770: }
771: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
772: LOGERR;
773: goto err;
774: }
775: n = srv->srv_netbuf;
776: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
777: LOGERR;
778: goto err;
779: }
780: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
781: LOGERR;
782: goto err;
783: }
784: if (bind(srv->srv_server.cli_sock, &srv->srv_server.cli_sa.sa,
785: srv->srv_server.cli_sa.sa.sa_len) == -1) {
786: LOGERR;
787: goto err;
788: }
789:
790: return srv;
791: err: /* error condition */
792: close(srv->srv_server.cli_sock);
793: io_arrayDestroy(&srv->srv_clients);
794: schedEnd(&srv->srv_root);
795: free(srv);
796: return NULL;
797: }
798:
799: /*
800: * rpc_srv_endServer() - Destroy RPC server, close all opened sockets and free resources
801: *
802: * @psrv = RPC Server instance
803: * return: none
804: */
805: void
806: rpc_srv_endServer(rpc_srv_t ** __restrict psrv)
807: {
808: rpc_cli_t *c;
809: register int i;
810: rpc_func_t *f, *tmp;
811:
812: if (!psrv || !*psrv) {
813: rpc_SetErr(EINVAL, "Can`t destroy server because parameter is null!");
814: return;
815: }
816:
817: /* close all clients connections & server socket */
818: for (i = 0; i < io_arraySize((*psrv)->srv_clients); i++) {
819: c = io_array((*psrv)->srv_clients, i, rpc_cli_t*);
820: if (c) {
821: shutdown(c->cli_sock, SHUT_RDWR);
822: close(c->cli_sock);
823:
824: io_arrayDel((*psrv)->srv_clients, i, 42);
825: }
826: }
827: io_arrayDestroy(&(*psrv)->srv_clients);
828:
829: close((*psrv)->srv_server.cli_sock);
830:
831: /* detach exported calls */
832: TAILQ_FOREACH_SAFE(f, &(*psrv)->srv_funcs, func_node, tmp) {
833: TAILQ_REMOVE(&(*psrv)->srv_funcs, f, func_node);
834:
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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