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 1.26.2.12 2015/07/02 21:52:29 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 - 2015
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: /* SOCK_STREAM */
50: static void *acceptClients(sched_task_t *);
51: static void *closeClient(sched_task_t *);
52: static void *rxPacket(sched_task_t *);
53: static void *txPacket(sched_task_t *);
54:
55: /* SOCK_DGRAM */
56: static void *freeClient(sched_task_t *);
57: static void *rxUDPPacket(sched_task_t *);
58: static void *txUDPPacket(sched_task_t *);
59:
60: /* SOCK_RAW */
61: static void *rxRAWPacket(sched_task_t *);
62: static void *txRAWPacket(sched_task_t *);
63:
64: /* SOCK_BPF */
65: static void *rxBPFPacket(sched_task_t *);
66: static void *txBPFPacket(sched_task_t *);
67:
68: /* SOCK_EXT */
69: static void *rxEXTPacket(sched_task_t *);
70: static void *txEXTPacket(sched_task_t *);
71:
72: static sched_task_func_t cbProto[SOCK_MAX_SUPPORT][4] = {
73: { acceptClients, closeClient, rxPacket, txPacket }, /* SOCK_STREAM */
74: { acceptClients, closeClient, rxPacket, txPacket }, /* SOCK_STREAM */
75: { rxUDPPacket, freeClient, NULL /*rxUDPPacket*/, txUDPPacket }, /* SOCK_DGRAM */
76: { rxRAWPacket, freeClient, NULL /*rxRAWPacket*/, txRAWPacket }, /* SOCK_RAW */
77: { rxBPFPacket, freeClient, NULL /*rxBPFPacket*/, txBPFPacket }, /* SOCK_BPF */
78: { rxEXTPacket, freeClient, NULL /*rxEXTPacket*/, txEXTPacket } /* SOCK_EXT */
79: };
80:
81: /* Global Signal Argument when kqueue support disabled */
82:
83: static volatile uintptr_t _glSigArg = 0;
84:
85: #pragma GCC visibility push(hidden)
86:
87: static int
88: rpc_funcs_cmp(struct tagRPCFunc *a, struct tagRPCFunc *b)
89: {
90: int ret;
91:
92: assert(a && b);
93:
94: ret = AIT_KEY(&a->func_name) - AIT_KEY(&b->func_name);
95:
96: if (ret < 0)
97: return -1;
98: else if (ret > 0)
99: return 1;
100:
101: return ret;
102: }
103:
104: AVL_GENERATE(tagRPCFuncs, tagRPCFunc, func_node, rpc_funcs_cmp);
105:
106: #pragma GCC visibility pop
107:
108: void
109: rpc_freeCli(rpc_cli_t * __restrict c)
110: {
111: rpc_srv_t *s = c->cli_parent;
112:
113: schedCancelby(s->srv_root, taskMAX, CRITERIA_ARG, c, NULL);
114:
115: /* free buffer */
116: AIT_FREE_VAL(&c->cli_buf);
117:
118: array_Del(s->srv_clients, c->cli_id, 0);
119: if (c)
120: e_free(c);
121: }
122:
123:
124: static inline int
125: _check4freeslot(rpc_srv_t * __restrict srv, sockaddr_t * __restrict sa)
126: {
127: rpc_cli_t *c = NULL;
128: register int i;
129:
130: /* check free slots for connect */
131: for (i = 0; i < array_Size(srv->srv_clients) &&
132: (c = array(srv->srv_clients, i, rpc_cli_t*)); i++)
133: /* check for duplicates */
134: if (sa && !e_addrcmp(&c->cli_sa, sa, 42))
135: break;
136: if (i >= array_Size(srv->srv_clients))
137: return -1; /* no more free slots! */
138:
139: return i;
140: }
141:
142: static rpc_cli_t *
143: _allocClient(rpc_srv_t * __restrict srv, sockaddr_t * __restrict sa)
144: {
145: rpc_cli_t *c = NULL;
146: int n;
147:
148: if (srv->srv_proto != SOCK_EXT)
149: n = _check4freeslot(srv, sa);
150: else
151: n = 0;
152: if (n == -1)
153: return NULL;
154: else
155: c = array(srv->srv_clients, n, rpc_cli_t*);
156:
157: if (!c) {
158: c = e_malloc(sizeof(rpc_cli_t));
159: if (!c) {
160: LOGERR;
161: srv->srv_kill = 1;
162: return NULL;
163: } else {
164: memset(c, 0, sizeof(rpc_cli_t));
165: array_Set(srv->srv_clients, n, c);
166: c->cli_id = n;
167: c->cli_parent = srv;
168: }
169:
170: /* alloc empty buffer */
171: AIT_SET_BUFSIZ(&c->cli_buf, 0, srv->srv_netbuf);
172: }
173:
174: return c;
175: }
176:
177:
178: static void *
179: freeClient(sched_task_t *task)
180: {
181: rpc_freeCli(TASK_ARG(task));
182:
183: taskExit(task, NULL);
184: }
185:
186: static void *
187: closeClient(sched_task_t *task)
188: {
189: int sock = ((rpc_cli_t*) TASK_ARG(task))->cli_sock;
190:
191: rpc_freeCli(TASK_ARG(task));
192:
193: /* close client socket */
194: shutdown(sock, SHUT_RDWR);
195: close(sock);
196: taskExit(task, NULL);
197: }
198:
199: static void *
200: txPacket(sched_task_t *task)
201: {
202: rpc_cli_t *c = TASK_ARG(task);
203: rpc_srv_t *s = c->cli_parent;
204: rpc_func_t *f = NULL;
205: u_char *buf = AIT_GET_BUF(&c->cli_buf);
206: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
207: int ret, wlen = sizeof(struct tagRPCCall);
208: #ifdef TCP_SESSION_TIMEOUT
209: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
210:
211: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
212: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
213: TASK_ARG(task), ts, TASK_ARG(task), 0);
214: #endif
215:
216: if (rpc->call_argc) {
217: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
218: if (!f) {
219: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
220:
221: rpc->call_argc ^= rpc->call_argc;
222: RPC_SET_RETURN(rpc, -1);
223: RPC_SET_ERRNO(rpc, rpc_Errno);
224: } else if (rpc_pktFreeSpace(c) > s->srv_netbuf) {
225: rpc_SetErr(EMSGSIZE, "Message too long");
226:
227: rpc->call_argc ^= rpc->call_argc;
228: RPC_SET_RETURN(rpc, -1);
229: RPC_SET_ERRNO(rpc, rpc_Errno);
230: } else {
231: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
232: /* Go Encapsulate variables */
233: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
234: RPC_RETVARS(c));
235: if (ret == -1) {
236: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
237:
238: rpc->call_argc ^= rpc->call_argc;
239: RPC_SET_RETURN(rpc, -1);
240: RPC_SET_ERRNO(rpc, rpc_Errno);
241: } else
242: wlen += ret;
243: }
244: }
245:
246: /* Free return values */
247: ait_freeVars(&c->cli_vars);
248:
249: rpc->call_len = htonl(wlen);
250: rpc->call_io = RPC_ACK;
251:
252: #if 0
253: /* calculate CRC */
254: rpc->call_crc ^= rpc->call_crc;
255: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
256: #endif
257:
258: /* send reply */
259: ret = send(TASK_FD(task), buf, wlen, MSG_NOSIGNAL);
260: if (ret == -1) {
261: /* close connection */
262: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
263: TASK_ARG(task), 0, NULL, 0);
264: }
265:
266: taskExit(task, NULL);
267: }
268:
269: static void *
270: execCall(sched_task_t *task)
271: {
272: rpc_cli_t *c = TASK_ARG(task);
273: rpc_srv_t *s = c->cli_parent;
274: rpc_func_t *f = NULL;
275: array_t *arr = NULL;
276: u_char *buf = AIT_GET_BUF(&c->cli_buf);
277: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
278: int argc = rpc->call_argc;
279:
280: /* Go decapsulate variables ... */
281: if (argc) {
282: arr = ait_buffer2vars(buf + sizeof(struct tagRPCCall),
283: AIT_LEN(&c->cli_buf) - sizeof(struct tagRPCCall), argc, 42);
284: if (!arr) {
285: rpc_SetErr(ERPCMISMATCH, "#%d - %s", elwix_GetErrno(), elwix_GetError());
286:
287: rpc->call_argc ^= rpc->call_argc;
288: RPC_SET_RETURN(rpc, -1);
289: RPC_SET_ERRNO(rpc, rpc_Errno);
290: taskExit(task, NULL);
291: }
292: } else
293: arr = NULL;
294:
295: if (!(f = rpc_srv_getCall(s, ntohs(rpc->call_tag)))) {
296: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
297:
298: rpc->call_argc ^= rpc->call_argc;
299: RPC_SET_RETURN(rpc, -1);
300: RPC_SET_ERRNO(rpc, rpc_Errno);
301: } else {
302: /* if client doesn't want reply */
303: RPC_SET_RETURN(rpc, rpc_srv_execCall(c, rpc, f->func_name, arr));
304: if (rpc->call_rep.ret == htonl(-1)) {
305: if (!rpc->call_rep.eno) {
306: LOGERR;
307: RPC_SET_ERRNO(rpc, rpc_Errno);
308: }
309: rpc->call_argc ^= rpc->call_argc;
310: ait_freeVars(&c->cli_vars);
311: } else {
312: rpc->call_rep.eno ^= rpc->call_rep.eno;
313: rpc->call_argc ^= rpc->call_argc;
314: if (TASK_VAL(task)) {
315: /* without reply */
316: ait_freeVars(&c->cli_vars);
317: } else {
318: /* reply */
319: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
320: }
321: }
322: }
323:
324: array_Destroy(&arr);
325: taskExit(task, NULL);
326: }
327:
328: static void *
329: rxPacket(sched_task_t *task)
330: {
331: rpc_cli_t *c = TASK_ARG(task);
332: rpc_srv_t *s = c->cli_parent;
333: int len, noreply = 0, rlen = AIT_LEN(&c->cli_buf);
334: #if 0
335: u_short crc;
336: #endif
337: u_char *buf = AIT_GET_BUF(&c->cli_buf);
338: u_char b[sizeof(struct tagRPCCall)];
339: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
340: #ifdef TCP_SESSION_TIMEOUT
341: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
342:
343: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
344: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
345: TASK_ARG(task), ts, TASK_ARG(task), 0);
346: #endif
347:
348: /* prepare rx */
349: len = recv(TASK_FD(task), b, sizeof b, MSG_PEEK);
350: if (len == sizeof b)
351: rlen = ntohl(((struct tagRPCCall*) b)->call_len);
352:
353: rlen = recv(TASK_FD(task), buf, rlen, 0);
354: if (rlen == -1) {
355: /* close connection */
356: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
357: TASK_ARG(task), 0, NULL, 0);
358: taskExit(task, NULL);
359: }
360: if (rlen < sizeof(struct tagRPCCall)) {
361: rpc_SetErr(ERPCMISMATCH, "Short RPC packet");
362:
363: rpc->call_argc ^= rpc->call_argc;
364: RPC_SET_RETURN(rpc, -1);
365: RPC_SET_ERRNO(rpc, rpc_Errno);
366: goto err;
367: } else
368: len = ntohl(rpc->call_len);
369: if (rlen < len || len > AIT_LEN(&c->cli_buf)) {
370: rpc_SetErr(ERPCMISMATCH, "Short RPC packet");
371:
372: rpc->call_argc ^= rpc->call_argc;
373: RPC_SET_RETURN(rpc, -1);
374: RPC_SET_ERRNO(rpc, rpc_Errno);
375: goto err;
376: }
377:
378: /* skip loop packet */
379: if (rpc->call_io & RPC_ACK) {
380: schedReadSelf(task);
381: taskExit(task, NULL);
382: }
383:
384: #if 0
385: /* check integrity of packet */
386: crc = ntohs(rpc->call_crc);
387: rpc->call_crc ^= rpc->call_crc;
388: if (crc != crcFletcher16((u_short*) rpc, len / 2)) {
389: rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet");
390:
391: rpc->call_argc ^= rpc->call_argc;
392: RPC_SET_RETURN(rpc, -1);
393: RPC_SET_ERRNO(rpc, rpc_Errno);
394: goto err;
395: }
396: #endif
397:
398: /* check RPC packet session info */
399: if (rpc_chkPktSession(&rpc->call_session, &s->srv_session)) {
400: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
401:
402: rpc->call_argc ^= rpc->call_argc;
403: RPC_SET_RETURN(rpc, -1);
404: RPC_SET_ERRNO(rpc, rpc_Errno);
405: goto err;
406: }
407:
408: noreply = RPC_CHK_NOREPLY(rpc);
409:
410: /* execute RPC call */
411: schedEvent(TASK_ROOT(task), execCall, TASK_ARG(task), (int) noreply, rpc, len);
412: err:
413: /* send RPC reply */
414: if (!noreply)
415: schedWrite(TASK_ROOT(task), cbProto[s->srv_proto][CB_TXPACKET],
416: TASK_ARG(task), TASK_FD(task), rpc, len);
417:
418: /* lets get next packet */
419: schedReadSelf(task);
420: taskExit(task, NULL);
421: }
422:
423: static void *
424: acceptClients(sched_task_t *task)
425: {
426: rpc_srv_t *srv = TASK_ARG(task);
427: rpc_cli_t *c = NULL;
428: socklen_t salen = sizeof(sockaddr_t);
429: int sock;
430: #ifdef TCP_SESSION_TIMEOUT
431: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
432: #endif
433:
434: c = _allocClient(srv, NULL);
435: if (!c) {
436: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
437: if ((sock = accept(TASK_FD(task), NULL, NULL)) != -1) {
438: shutdown(sock, SHUT_RDWR);
439: close(sock);
440: }
441: goto end;
442: }
443:
444: /* accept client */
445: c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen);
446: if (c->cli_sock == -1) {
447: LOGERR;
448: AIT_FREE_VAL(&c->cli_buf);
449: array_Del(srv->srv_clients, c->cli_id, 42);
450: goto end;
451: } else
452: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
453:
454: #ifdef TCP_SESSION_TIMEOUT
455: /* armed timer for close stateless connection */
456: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
457: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT], c,
458: ts, c, 0);
459: #endif
460: schedRead(TASK_ROOT(task), cbProto[srv->srv_proto][CB_RXPACKET], c,
461: c->cli_sock, NULL, 0);
462: end:
463: schedReadSelf(task);
464: taskExit(task, NULL);
465: }
466:
467:
468: static void *
469: txUDPPacket(sched_task_t *task)
470: {
471: rpc_cli_t *c = TASK_ARG(task);
472: rpc_srv_t *s = c->cli_parent;
473: rpc_func_t *f = NULL;
474: u_char *buf = AIT_GET_BUF(&c->cli_buf);
475: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
476: int ret, wlen = sizeof(struct tagRPCCall);
477: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
478:
479: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
480: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
481: TASK_ARG(task), ts, TASK_ARG(task), 0);
482:
483: if (rpc->call_argc) {
484: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
485: if (!f) {
486: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
487:
488: rpc->call_argc ^= rpc->call_argc;
489: RPC_SET_RETURN(rpc, -1);
490: RPC_SET_ERRNO(rpc, rpc_Errno);
491: } else if (rpc_pktFreeSpace(c) > s->srv_netbuf) {
492: rpc_SetErr(EMSGSIZE, "Message too long");
493:
494: rpc->call_argc ^= rpc->call_argc;
495: RPC_SET_RETURN(rpc, -1);
496: RPC_SET_ERRNO(rpc, rpc_Errno);
497: } else {
498: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
499: /* Go Encapsulate variables */
500: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
501: RPC_RETVARS(c));
502: if (ret == -1) {
503: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
504:
505: rpc->call_argc ^= rpc->call_argc;
506: RPC_SET_RETURN(rpc, -1);
507: RPC_SET_ERRNO(rpc, rpc_Errno);
508: } else
509: wlen += ret;
510: }
511: }
512:
513: /* Free return values */
514: ait_freeVars(&c->cli_vars);
515:
516: rpc->call_len = htonl(wlen);
517: rpc->call_io = RPC_ACK;
518:
519: /* calculate CRC */
520: rpc->call_crc ^= rpc->call_crc;
521: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
522:
523: /* send reply */
524: ret = sendto(TASK_FD(task), buf, wlen, MSG_NOSIGNAL,
525: &c->cli_sa.sa, c->cli_sa.sa.sa_len);
526: if (ret == -1) {
527: /* close connection */
528: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
529: TASK_ARG(task), 0, NULL, 0);
530: }
531:
532: taskExit(task, NULL);
533: }
534:
535: static void *
536: rxUDPPacket(sched_task_t *task)
537: {
538: rpc_srv_t *srv = TASK_ARG(task);
539: rpc_cli_t *c = NULL;
540: int len, noreply = 0, rlen;
541: u_short crc;
542: struct tagRPCCall *rpc;
543: sockaddr_t sa;
544: socklen_t salen;
545: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
546: ait_val_t b = AIT_VAL_INIT;
547:
548: /* receive connect packet */
549: AIT_SET_BUF(&b, NULL, srv->srv_netbuf);
550: salen = sa.ss.ss_len = sizeof(sockaddr_t);
551: rlen = recvfrom(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b), 0, &sa.sa, &salen);
552: rpc = (struct tagRPCCall*) AIT_GET_BUF(&b);
553: if (rlen < sizeof(struct tagRPCCall))
554: goto end;
555: else
556: len = ntohl(rpc->call_len);
557: if (rlen < len || len > srv->srv_netbuf)
558: goto end;
559:
560: /* skip loop packet */
561: if (rpc->call_io & RPC_ACK)
562: goto end;
563:
564: /* check integrity of packet */
565: crc = ntohs(rpc->call_crc);
566: rpc->call_crc ^= rpc->call_crc;
567: if (crc != crcFletcher16((u_short*) rpc, len / 2))
568: goto end;
569:
570: /* check RPC packet session info */
571: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session))
572: goto end;
573:
574: c = _allocClient(srv, &sa);
575: if (!c) {
576: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
577: usleep(2000); /* blocked client delay */
578: goto end;
579: } else {
580: memcpy(AIT_GET_BUF(&c->cli_buf), AIT_GET_BUF(&b), len);
581: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
582:
583: c->cli_sock = TASK_FD(task);
584: memcpy(&c->cli_sa, &sa, sizeof c->cli_sa);
585:
586: /* armed timer for close stateless connection */
587: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
588: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
589: c, ts, c, 0);
590: }
591:
592: noreply = RPC_CHK_NOREPLY(rpc);
593:
594: /* execute RPC call */
595: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
596:
597: /* send RPC reply */
598: if (!noreply)
599: schedWrite(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
600: c, TASK_FD(task), rpc, len);
601: end:
602: AIT_FREE_VAL(&b);
603: schedReadSelf(task);
604: taskExit(task, NULL);
605: }
606:
607:
608: static void *
609: txRAWPacket(sched_task_t *task)
610: {
611: rpc_cli_t *c = TASK_ARG(task);
612: rpc_srv_t *s = c->cli_parent;
613: rpc_func_t *f = NULL;
614: u_char *buf = AIT_GET_BUF(&c->cli_buf);
615: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
616: int ret, wlen = sizeof(struct tagRPCCall);
617: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
618:
619: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
620: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
621: TASK_ARG(task), ts, TASK_ARG(task), 0);
622:
623: if (rpc->call_argc) {
624: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
625: if (!f) {
626: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
627:
628: rpc->call_argc ^= rpc->call_argc;
629: RPC_SET_RETURN(rpc, -1);
630: RPC_SET_ERRNO(rpc, rpc_Errno);
631: } else if (rpc_pktFreeSpace(c) > s->srv_netbuf) {
632: rpc_SetErr(EMSGSIZE, "Message too long");
633:
634: rpc->call_argc ^= rpc->call_argc;
635: RPC_SET_RETURN(rpc, -1);
636: RPC_SET_ERRNO(rpc, rpc_Errno);
637: } else {
638: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
639: /* Go Encapsulate variables */
640: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
641: RPC_RETVARS(c));
642: if (ret == -1) {
643: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
644:
645: rpc->call_argc ^= rpc->call_argc;
646: RPC_SET_RETURN(rpc, -1);
647: RPC_SET_ERRNO(rpc, rpc_Errno);
648: } else
649: wlen += ret;
650: }
651: }
652:
653: /* Free return values */
654: ait_freeVars(&c->cli_vars);
655:
656: rpc->call_len = htonl(wlen);
657: rpc->call_io = RPC_ACK;
658:
659: /* calculate CRC */
660: rpc->call_crc ^= rpc->call_crc;
661: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
662:
663: /* send reply */
664: ret = sendto(TASK_FD(task), buf, wlen, MSG_NOSIGNAL,
665: &c->cli_sa.sa, c->cli_sa.sa.sa_len);
666: if (ret == -1) {
667: /* close connection */
668: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
669: TASK_ARG(task), 0, NULL, 0);
670: }
671:
672: taskExit(task, NULL);
673: }
674:
675: static void *
676: rxRAWPacket(sched_task_t *task)
677: {
678: rpc_srv_t *srv = TASK_ARG(task);
679: rpc_cli_t *c = NULL;
680: int len, noreply = 0, rlen;
681: u_short crc;
682: struct tagRPCCall *rpc;
683: sockaddr_t sa;
684: socklen_t salen;
685: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
686: ait_val_t b = AIT_VAL_INIT;
687:
688: /* receive connect packet */
689: AIT_SET_BUF(&b, NULL, srv->srv_netbuf);
690: salen = sa.ss.ss_len = sizeof(sockaddr_t);
691: rlen = recvfrom(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b), 0, &sa.sa, &salen);
692: if (sa.sa.sa_family == AF_INET) {
693: struct ip *h;
694: h = (struct ip*) AIT_GET_BUF(&b);
695: if (rlen < ntohs(h->ip_len) || h->ip_p != IPPROTO_ERPC)
696: goto end;
697: else {
698: rlen -= sizeof(struct ip);
699: rpc = (struct tagRPCCall*) (h + 1);
700: }
701: } else {
702: struct ip6_hdr *h;
703: h = (struct ip6_hdr*) AIT_GET_BUF(&b);
704: if (rlen < (ntohs(h->ip6_plen) + sizeof(struct ip6_hdr)) ||
705: h->ip6_nxt != IPPROTO_ERPC)
706: goto end;
707: else {
708: rlen -= sizeof(struct ip6_hdr);
709: rpc = (struct tagRPCCall*) (h + 1);
710: }
711: }
712: if (rlen < sizeof(struct tagRPCCall))
713: goto end;
714: else
715: len = ntohl(rpc->call_len);
716: if (rlen < len || len > srv->srv_netbuf)
717: goto end;
718:
719: /* skip loop packet */
720: if (rpc->call_io & RPC_ACK)
721: goto end;
722:
723: /* check integrity of packet */
724: crc = ntohs(rpc->call_crc);
725: rpc->call_crc ^= rpc->call_crc;
726: if (crc != crcFletcher16((u_short*) rpc, len / 2))
727: goto end;
728:
729: /* check RPC packet session info */
730: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session))
731: goto end;
732:
733: c = _allocClient(srv, &sa);
734: if (!c) {
735: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
736: usleep(2000); /* blocked client delay */
737: goto end;
738: } else {
739: memcpy(AIT_GET_BUF(&c->cli_buf), rpc, len);
740: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
741:
742: c->cli_sock = TASK_FD(task);
743: memcpy(&c->cli_sa, &sa, sizeof c->cli_sa);
744:
745: /* armed timer for close stateless connection */
746: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
747: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
748: c, ts, c, 0);
749: }
750:
751: noreply = RPC_CHK_NOREPLY(rpc);
752:
753: /* execute RPC call */
754: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
755:
756: /* send RPC reply */
757: if (!noreply)
758: schedWrite(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
759: c, TASK_FD(task), rpc, len);
760: end:
761: AIT_FREE_VAL(&b);
762: schedReadSelf(task);
763: taskExit(task, NULL);
764: }
765:
766:
767: static void *
768: txBPFPacket(sched_task_t *task)
769: {
770: rpc_cli_t *c = TASK_ARG(task);
771: rpc_srv_t *s = c->cli_parent;
772: rpc_func_t *f = NULL;
773: u_char *buf = AIT_GET_BUF(&c->cli_buf);
774: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
775: int ret, wlen = sizeof(struct tagRPCCall);
776: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
777: struct ether_header *eh;
778: ait_val_t b = AIT_VAL_INIT;
779:
780: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
781: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
782: TASK_ARG(task), ts, TASK_ARG(task), 0);
783:
784: if (rpc->call_argc) {
785: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
786: if (!f) {
787: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
788:
789: rpc->call_argc ^= rpc->call_argc;
790: RPC_SET_RETURN(rpc, -1);
791: RPC_SET_ERRNO(rpc, rpc_Errno);
792: } else if (rpc_pktFreeSpace(c) > s->srv_netbuf) {
793: rpc_SetErr(EMSGSIZE, "Message too long");
794:
795: rpc->call_argc ^= rpc->call_argc;
796: RPC_SET_RETURN(rpc, -1);
797: RPC_SET_ERRNO(rpc, rpc_Errno);
798: } else {
799: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
800: /* Go Encapsulate variables */
801: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
802: RPC_RETVARS(c));
803: if (ret == -1) {
804: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
805:
806: rpc->call_argc ^= rpc->call_argc;
807: RPC_SET_RETURN(rpc, -1);
808: RPC_SET_ERRNO(rpc, rpc_Errno);
809: } else
810: wlen += ret;
811: }
812: }
813:
814: /* Free return values */
815: ait_freeVars(&RPC_RETVARS(c));
816:
817: rpc->call_len = htonl(wlen);
818: rpc->call_io = RPC_ACK;
819:
820: /* calculate CRC */
821: rpc->call_crc ^= rpc->call_crc;
822: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
823:
824: /* send reply */
825: AIT_SET_BUF(&b, NULL, wlen + ETHER_HDR_LEN);
826: eh = (struct ether_header*) AIT_GET_BUF(&b);
827: memcpy(eh->ether_dhost, LLADDR(&c->cli_sa.sdl), ETHER_ADDR_LEN);
828: eh->ether_type = htons(RPC_DEFPORT);
829: memcpy(eh + 1, buf, wlen);
830:
831: ret = write(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b));
832: AIT_FREE_VAL(&b);
833: if (ret == -1) {
834: /* close connection */
835: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
836: TASK_ARG(task), 0, NULL, 0);
837: }
838:
839: taskExit(task, NULL);
840: }
841:
842: static void *
843: rxBPFPacket(sched_task_t *task)
844: {
845: rpc_srv_t *srv = TASK_ARG(task);
846: rpc_cli_t *c = NULL;
847: int len, rlen, noreply;
848: u_short crc;
849: struct tagRPCCall *rpc;
850: sockaddr_t sa;
851: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
852: struct bpf_hdr *h;
853: struct ether_header *eh;
854: ait_val_t b = AIT_VAL_INIT;
855:
856: /* receive connect packet */
857: AIT_SET_BUF(&b, NULL, srv->srv_netbuf);
858: rlen = read(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b));
859: h = (struct bpf_hdr*) AIT_GET_BUF(&b);
860: rlen -= h->bh_hdrlen;
861: if (rlen < h->bh_datalen || h->bh_caplen != h->bh_datalen ||
862: rlen < ETHER_HDR_LEN + sizeof(struct tagRPCCall))
863: goto end;
864: else {
865: rlen = h->bh_caplen;
866: eh = (struct ether_header*) (AIT_GET_BUF(&b) + h->bh_hdrlen);
867: rlen -= ETHER_HDR_LEN;
868: rpc = (struct tagRPCCall*) (eh + 1);
869:
870: if (eh->ether_type != ntohs(RPC_DEFPORT))
871: goto end;
872: else
873: e_getlinkbymac((const ether_addr_t*) eh->ether_shost, &sa);
874: }
875: if (rlen < sizeof(struct tagRPCCall))
876: goto end;
877: else
878: len = ntohl(rpc->call_len);
879: if (rlen < len || len > srv->srv_netbuf)
880: goto end;
881:
882: #ifdef CHECK_ETHACK
883: /* skip loop packet */
884: if (rpc->call_io & RPC_ACK)
885: goto end;
886: #endif
887:
888: /* check integrity of packet */
889: crc = ntohs(rpc->call_crc);
890: rpc->call_crc ^= rpc->call_crc;
891: if (crc != crcFletcher16((u_short*) rpc, len / 2))
892: goto end;
893:
894: /* check RPC packet session info */
895: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session))
896: goto end;
897:
898: c = _allocClient(srv, &sa);
899: if (!c) {
900: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
901: usleep(2000); /* blocked client delay */
902: goto end;
903: } else {
904: memcpy(AIT_GET_BUF(&c->cli_buf), rpc, len);
905: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
906:
907: c->cli_sock = TASK_FD(task);
908: memcpy(&c->cli_sa, &sa, sizeof c->cli_sa);
909:
910: /* armed timer for close stateless connection */
911: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
912: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
913: c, ts, c, 0);
914: }
915:
916: noreply = RPC_CHK_NOREPLY(rpc);
917:
918: /* execute RPC call */
919: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
920:
921: /* send RPC reply */
922: if (!noreply)
923: schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
924: c, TASK_FD(task), rpc, len);
925: end:
926: AIT_FREE_VAL(&b);
927: schedReadSelf(task);
928: taskExit(task, NULL);
929: }
930:
931:
932: static void *
933: txEXTPacket(sched_task_t *task)
934: {
935: rpc_cli_t *c = TASK_ARG(task);
936: rpc_srv_t *s = c->cli_parent;
937: rpc_func_t *f = NULL;
938: u_char *buf = AIT_GET_BUF(&c->cli_buf);
939: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
940: int ret, wlen = sizeof(struct tagRPCCall);
941: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
942:
943: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
944: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
945: TASK_ARG(task), ts, TASK_ARG(task), 0);
946:
947: if (rpc->call_argc) {
948: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
949: if (!f) {
950: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
951:
952: rpc->call_argc ^= rpc->call_argc;
953: RPC_SET_RETURN(rpc, -1);
954: RPC_SET_ERRNO(rpc, rpc_Errno);
955: } else if (rpc_pktFreeSpace(c) > s->srv_netbuf) {
956: rpc_SetErr(EMSGSIZE, "Message too long");
957:
958: rpc->call_argc ^= rpc->call_argc;
959: RPC_SET_RETURN(rpc, -1);
960: RPC_SET_ERRNO(rpc, rpc_Errno);
961: } else {
962: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
963: /* Go Encapsulate variables */
964: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
965: RPC_RETVARS(c));
966: if (ret == -1) {
967: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
968:
969: rpc->call_argc ^= rpc->call_argc;
970: RPC_SET_RETURN(rpc, -1);
971: RPC_SET_ERRNO(rpc, rpc_Errno);
972: } else
973: wlen += ret;
974: }
975: }
976:
977: /* Free return values */
978: ait_freeVars(&RPC_RETVARS(c));
979:
980: rpc->call_len = htonl(wlen);
981: rpc->call_io = RPC_ACK;
982:
983: /* send reply */
984: ret = write(TASK_FD(task), buf, wlen);
985: if (ret == -1) {
986: /* close connection */
987: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
988: TASK_ARG(task), 0, NULL, 0);
989: }
990:
991: taskExit(task, NULL);
992: }
993:
994: static void *
995: rxEXTPacket(sched_task_t *task)
996: {
997: rpc_srv_t *srv = TASK_ARG(task);
998: rpc_cli_t *c = NULL;
999: int len, noreply = 0, rlen = AIT_LEN(&c->cli_buf);
1000: struct tagRPCCall *rpc;
1001: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
1002: sockaddr_t sa;
1003: ait_val_t b = AIT_VAL_INIT;
1004:
1005: memset(&sa, 0, sizeof sa);
1006: /* receive connect packet */
1007: AIT_SET_BUF(&b, NULL, srv->srv_netbuf);
1008: rlen = read(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b));
1009: rpc = (struct tagRPCCall*) AIT_GET_BUF(&b);
1010: if (rlen < sizeof(struct tagRPCCall))
1011: goto end;
1012: else
1013: len = ntohl(rpc->call_len);
1014: if (rlen < len || len > srv->srv_netbuf)
1015: goto end;
1016:
1017: /* skip loop packet */
1018: if (rpc->call_io & RPC_ACK)
1019: goto end;
1020:
1021: /* check RPC packet session info */
1022: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session))
1023: goto end;
1024:
1025: c = _allocClient(srv, &sa);
1026: if (!c) {
1027: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
1028: usleep(2000); /* blocked client delay */
1029: goto end;
1030: } else {
1031: memcpy(AIT_GET_BUF(&c->cli_buf), AIT_GET_BUF(&b), len);
1032: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
1033:
1034: c->cli_sock = TASK_FD(task);
1035:
1036: /* armed timer for close stateless connection */
1037: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
1038: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
1039: c, ts, c, 0);
1040: }
1041:
1042: noreply = RPC_CHK_NOREPLY(rpc);
1043:
1044: /* execute RPC call */
1045: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
1046:
1047: /* send RPC reply */
1048: if (!noreply)
1049: schedWrite(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
1050: c, TASK_FD(task), rpc, len);
1051: end:
1052: AIT_FREE_VAL(&b);
1053: schedReadSelf(task);
1054: taskExit(task, NULL);
1055: }
1056:
1057: /* ------------------------------------------------------ */
1058:
1059: void
1060: rpc_freeBLOBCli(rpc_cli_t * __restrict c)
1061: {
1062: rpc_srv_t *s = c->cli_parent;
1063:
1064: schedCancelby(s->srv_blob.root, taskMAX, CRITERIA_ARG, c, NULL);
1065:
1066: /* free buffer */
1067: AIT_FREE_VAL(&c->cli_buf);
1068:
1069: array_Del(s->srv_blob.clients, c->cli_id, 0);
1070: if (c)
1071: e_free(c);
1072: }
1073:
1074:
1075: static void *
1076: closeBLOBClient(sched_task_t *task)
1077: {
1078: int sock = ((rpc_cli_t*) TASK_ARG(task))->cli_sock;
1079:
1080: rpc_freeBLOBCli(TASK_ARG(task));
1081:
1082: /* close client socket */
1083: shutdown(sock, SHUT_RDWR);
1084: close(sock);
1085: taskExit(task, NULL);
1086: }
1087:
1088: static void *
1089: txBLOB(sched_task_t *task)
1090: {
1091: rpc_cli_t *c = TASK_ARG(task);
1092: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1093: int wlen = sizeof(struct tagBLOBHdr);
1094:
1095: /* send reply */
1096: wlen = send(TASK_FD(task), buf, wlen, MSG_NOSIGNAL);
1097: if (wlen == -1 || wlen != sizeof(struct tagBLOBHdr)) {
1098: /* close blob connection */
1099: schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0);
1100: }
1101:
1102: taskExit(task, NULL);
1103: }
1104:
1105: static void *
1106: rxBLOB(sched_task_t *task)
1107: {
1108: rpc_cli_t *c = TASK_ARG(task);
1109: rpc_srv_t *s = c->cli_parent;
1110: rpc_blob_t *b;
1111: struct tagBLOBHdr blob;
1112: int rlen;
1113:
1114: memset(&blob, 0, sizeof blob);
1115: rlen = recv(TASK_FD(task), &blob, sizeof blob, 0);
1116: if (rlen < 1) {
1117: /* close blob connection */
1118: schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0);
1119: taskExit(task, NULL);
1120: }
1121:
1122: /* check BLOB packet */
1123: if (rlen < sizeof(struct tagBLOBHdr)) {
1124: rpc_SetErr(ERPCMISMATCH, "Short BLOB packet");
1125:
1126: schedReadSelf(task);
1127: taskExit(task, NULL);
1128: }
1129:
1130: /* check RPC packet session info */
1131: if (rpc_chkPktSession(&blob.hdr_session, &s->srv_session)) {
1132: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
1133: blob.hdr_cmd = error;
1134: goto end;
1135: }
1136:
1137: /* Go to proceed packet ... */
1138: switch (blob.hdr_cmd) {
1139: case get:
1140: if (!(b = rpc_srv_getBLOB(s, ntohl(blob.hdr_var)))) {
1141: rpc_SetErr(EINVAL, "Var=%x not found", ntohl(blob.hdr_var));
1142: blob.hdr_cmd = no;
1143: RPC_SET_BLOB_RET(&blob, -1);
1144: break;
1145: } else
1146: blob.hdr_len = htonl(b->blob_len);
1147:
1148: if (rpc_srv_blobMap(s, b) != -1) {
1149: /* deliver BLOB variable to client */
1150: blob.hdr_ret = htonl(rpc_srv_sendBLOB(c, b));
1151: rpc_srv_blobUnmap(b);
1152: } else {
1153: blob.hdr_cmd = error;
1154: RPC_SET_BLOB_RET(&blob, -1);
1155: }
1156: break;
1157: case set:
1158: if ((b = rpc_srv_registerBLOB(s, ntohl(blob.hdr_len),
1159: ntohl(blob.hdr_ret)))) {
1160: /* set new BLOB variable for reply :) */
1161: blob.hdr_var = htonl(b->blob_var);
1162:
1163: /* receive BLOB from client */
1164: blob.hdr_ret = htonl(rpc_srv_recvBLOB(c, b));
1165: rpc_srv_blobUnmap(b);
1166: } else {
1167: blob.hdr_cmd = error;
1168: RPC_SET_BLOB_RET(&blob, -1);
1169: }
1170: break;
1171: case unset:
1172: if (rpc_srv_unregisterBLOB(s, ntohl(blob.hdr_var)) == -1) {
1173: blob.hdr_cmd = error;
1174: RPC_SET_BLOB_RET(&blob, -1);
1175: }
1176: break;
1177: default:
1178: rpc_SetErr(EPROCUNAVAIL, "Unsupported BLOB command %d", blob.hdr_cmd);
1179: blob.hdr_cmd = error;
1180: RPC_SET_BLOB_RET(&blob, -1);
1181: }
1182:
1183: end:
1184: memcpy(AIT_ADDR(&c->cli_buf), &blob, sizeof blob);
1185: schedWrite(TASK_ROOT(task), txBLOB, TASK_ARG(task), TASK_FD(task), NULL, 0);
1186: schedReadSelf(task);
1187: taskExit(task, NULL);
1188: }
1189:
1190: static void *
1191: flushBLOB(sched_task_t *task)
1192: {
1193: uintptr_t sigArg = atomic_load_acq_ptr(&_glSigArg);
1194: rpc_srv_t *srv = sigArg ? (void*) sigArg : TASK_ARG(task);
1195: rpc_blob_t *b, *tmp;
1196:
1197: TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) {
1198: TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node);
1199:
1200: rpc_srv_blobFree(srv, b);
1201: e_free(b);
1202: }
1203:
1204: if (!schedSignalSelf(task)) {
1205: /* disabled kqueue support in libaitsched */
1206: struct sigaction sa;
1207:
1208: memset(&sa, 0, sizeof sa);
1209: sigemptyset(&sa.sa_mask);
1210: sa.sa_handler = (void (*)(int)) flushBLOB;
1211: sa.sa_flags = SA_RESTART | SA_RESETHAND;
1212: sigaction(SIGFBLOB, &sa, NULL);
1213: }
1214:
1215: taskExit(task, NULL);
1216: }
1217:
1218: static void *
1219: acceptBLOBClients(sched_task_t *task)
1220: {
1221: rpc_srv_t *srv = TASK_ARG(task);
1222: rpc_cli_t *c = NULL;
1223: register int i;
1224: socklen_t salen = sizeof(sockaddr_t);
1225: int sock;
1226: #ifdef TCP_NOPUSH
1227: int n = 1;
1228: #endif
1229:
1230: /* check free slots for connect */
1231: for (i = 0; i < array_Size(srv->srv_blob.clients) &&
1232: (c = array(srv->srv_blob.clients, i, rpc_cli_t*)); i++);
1233: if (c) { /* no more free slots! */
1234: EVERBOSE(1, "BLOB client quota exceeded! Connection will be shutdown!\n");
1235: if ((sock = accept(TASK_FD(task), NULL, NULL)) != -1) {
1236: shutdown(sock, SHUT_RDWR);
1237: close(sock);
1238: }
1239: goto end;
1240: }
1241:
1242: c = e_malloc(sizeof(rpc_cli_t));
1243: if (!c) {
1244: LOGERR;
1245: srv->srv_kill = srv->srv_blob.kill = 1;
1246: taskExit(task, NULL);
1247: } else {
1248: memset(c, 0, sizeof(rpc_cli_t));
1249: array_Set(srv->srv_blob.clients, i, c);
1250: c->cli_id = i;
1251: c->cli_parent = srv;
1252: }
1253:
1254: /* alloc empty buffer */
1255: AIT_SET_BUFSIZ(&c->cli_buf, 0, srv->srv_netbuf);
1256:
1257: /* accept client */
1258: c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen);
1259: if (c->cli_sock == -1) {
1260: LOGERR;
1261: AIT_FREE_VAL(&c->cli_buf);
1262: array_Del(srv->srv_blob.clients, i, 42);
1263: goto end;
1264: } else {
1265: #ifdef TCP_NOPUSH
1266: setsockopt(c->cli_sock, IPPROTO_TCP, TCP_NOPUSH, &n, sizeof n);
1267: #endif
1268: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
1269: }
1270:
1271: schedRead(TASK_ROOT(task), rxBLOB, c, c->cli_sock, NULL, 0);
1272: end:
1273: schedReadSelf(task);
1274: taskExit(task, NULL);
1275: }
1276:
1277: /* ------------------------------------------------------ */
1278:
1279: /*
1280: * rpc_srv_initBLOBServer() - Init & create BLOB Server
1281: *
1282: * @srv = RPC server instance
1283: * @Port = Port for bind server, if Port == 0 default port is selected
1284: * @diskDir = Disk place for BLOB file objects
1285: * return: -1 == error or 0 bind and created BLOB server instance
1286: */
1287: int
1288: rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, u_short Port, const char *diskDir)
1289: {
1290: int n = 1;
1291:
1292: if (!srv || srv->srv_kill) {
1293: rpc_SetErr(EINVAL, "Invalid parameters can`t init BLOB server");
1294: return -1;
1295: }
1296:
1297: memset(&srv->srv_blob, 0, sizeof srv->srv_blob);
1298: if (access(diskDir, R_OK | W_OK) == -1) {
1299: LOGERR;
1300: return -1;
1301: } else
1302: AIT_SET_STR(&srv->srv_blob.dir, diskDir);
1303:
1304: /* init blob list */
1305: TAILQ_INIT(&srv->srv_blob.blobs);
1306:
1307: srv->srv_blob.server.cli_parent = srv;
1308:
1309: memcpy(&srv->srv_blob.server.cli_sa, &srv->srv_server.cli_sa, sizeof(sockaddr_t));
1310: switch (srv->srv_blob.server.cli_sa.sa.sa_family) {
1311: case AF_INET:
1312: srv->srv_blob.server.cli_sa.sin.sin_port =
1313: htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin.sin_port) + 1);
1314: break;
1315: case AF_INET6:
1316: srv->srv_blob.server.cli_sa.sin6.sin6_port =
1317: htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin6.sin6_port) + 1);
1318: break;
1319: case AF_LOCAL:
1320: strlcat(srv->srv_blob.server.cli_sa.sun.sun_path, ".blob",
1321: sizeof srv->srv_blob.server.cli_sa.sun.sun_path);
1322: break;
1323: default:
1324: AIT_FREE_VAL(&srv->srv_blob.dir);
1325: return -1;
1326: }
1327:
1328: /* create BLOB server socket */
1329: srv->srv_blob.server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, SOCK_STREAM, 0);
1330: if (srv->srv_blob.server.cli_sock == -1) {
1331: LOGERR;
1332: AIT_FREE_VAL(&srv->srv_blob.dir);
1333: return -1;
1334: }
1335: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
1336: LOGERR;
1337: close(srv->srv_blob.server.cli_sock);
1338: AIT_FREE_VAL(&srv->srv_blob.dir);
1339: return -1;
1340: }
1341: n = srv->srv_netbuf;
1342: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
1343: LOGERR;
1344: close(srv->srv_blob.server.cli_sock);
1345: AIT_FREE_VAL(&srv->srv_blob.dir);
1346: return -1;
1347: }
1348: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
1349: LOGERR;
1350: close(srv->srv_blob.server.cli_sock);
1351: AIT_FREE_VAL(&srv->srv_blob.dir);
1352: return -1;
1353: }
1354: if (bind(srv->srv_blob.server.cli_sock, &srv->srv_blob.server.cli_sa.sa,
1355: srv->srv_blob.server.cli_sa.sa.sa_len) == -1) {
1356: LOGERR;
1357: close(srv->srv_blob.server.cli_sock);
1358: AIT_FREE_VAL(&srv->srv_blob.dir);
1359: return -1;
1360: } else
1361: fcntl(srv->srv_blob.server.cli_sock, F_SETFL,
1362: fcntl(srv->srv_blob.server.cli_sock, F_GETFL) | O_NONBLOCK);
1363:
1364:
1365: /* allocate pool for concurent blob clients */
1366: srv->srv_blob.clients = array_Init(array_Size(srv->srv_clients));
1367: if (!srv->srv_blob.clients) {
1368: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1369: close(srv->srv_blob.server.cli_sock);
1370: AIT_FREE_VAL(&srv->srv_blob.dir);
1371: return -1;
1372: }
1373:
1374: /* init blob scheduler */
1375: srv->srv_blob.root = schedBegin();
1376: if (!srv->srv_blob.root) {
1377: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1378: array_Destroy(&srv->srv_blob.clients);
1379: close(srv->srv_blob.server.cli_sock);
1380: AIT_FREE_VAL(&srv->srv_blob.dir);
1381: return -1;
1382: }
1383:
1384: return 0;
1385: }
1386:
1387: /*
1388: * rpc_srv_endBLOBServer() - Destroy BLOB server, close all opened sockets and free resources
1389: *
1390: * @srv = RPC Server instance
1391: * return: none
1392: */
1393: void
1394: rpc_srv_endBLOBServer(rpc_srv_t * __restrict srv)
1395: {
1396: if (!srv)
1397: return;
1398:
1399: srv->srv_blob.kill = 1;
1400:
1401: schedEnd(&srv->srv_blob.root);
1402:
1403: if (srv->srv_blob.server.cli_sa.sa.sa_family == AF_LOCAL)
1404: unlink(srv->srv_blob.server.cli_sa.sun.sun_path);
1405: }
1406:
1407: /*
1408: * rpc_srv_loopBLOBServer() - Execute Main BLOB server loop and wait for clients requests
1409: *
1410: * @srv = RPC Server instance
1411: * return: -1 error or 0 ok, infinite loop ...
1412: */
1413: int
1414: rpc_srv_loopBLOBServer(rpc_srv_t * __restrict srv)
1415: {
1416: rpc_cli_t *c;
1417: register int i;
1418: rpc_blob_t *b, *tmp;
1419: struct timespec ts = { RPC_SCHED_POLLING, 0 };
1420:
1421: if (!srv || srv->srv_kill) {
1422: rpc_SetErr(EINVAL, "Invalid parameter can`t start BLOB server");
1423: return -1;
1424: }
1425:
1426: if (listen(srv->srv_blob.server.cli_sock, array_Size(srv->srv_blob.clients)) == -1) {
1427: LOGERR;
1428: return -1;
1429: }
1430:
1431: if (!schedSignal(srv->srv_blob.root, flushBLOB, srv, SIGFBLOB, NULL, 0)) {
1432: /* disabled kqueue support in libaitsched */
1433: struct sigaction sa;
1434:
1435: atomic_store_rel_ptr(&_glSigArg, (uintptr_t) srv);
1436:
1437: memset(&sa, 0, sizeof sa);
1438: sigemptyset(&sa.sa_mask);
1439: sa.sa_handler = (void (*)(int)) flushBLOB;
1440: sa.sa_flags = SA_RESTART | SA_RESETHAND;
1441: sigaction(SIGFBLOB, &sa, NULL);
1442: }
1443:
1444: if (!schedRead(srv->srv_blob.root, acceptBLOBClients, srv,
1445: srv->srv_blob.server.cli_sock, NULL, 0)) {
1446: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1447: return -1;
1448: }
1449:
1450: schedPolling(srv->srv_blob.root, &ts, NULL);
1451: /* main rpc loop */
1452: schedRun(srv->srv_blob.root, &srv->srv_blob.kill);
1453:
1454: /* detach blobs */
1455: TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) {
1456: TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node);
1457:
1458: rpc_srv_blobFree(srv, b);
1459: e_free(b);
1460: }
1461:
1462: /* close all clients connections & server socket */
1463: for (i = 0; i < array_Size(srv->srv_blob.clients); i++) {
1464: c = array(srv->srv_blob.clients, i, rpc_cli_t*);
1465: if (c) {
1466: shutdown(c->cli_sock, SHUT_RDWR);
1467: close(c->cli_sock);
1468:
1469: schedCancelby(srv->srv_blob.root, taskMAX, CRITERIA_ARG, c, NULL);
1470: AIT_FREE_VAL(&c->cli_buf);
1471: }
1472: array_Del(srv->srv_blob.clients, i, 42);
1473: }
1474: array_Destroy(&srv->srv_blob.clients);
1475:
1476: close(srv->srv_blob.server.cli_sock);
1477:
1478: AIT_FREE_VAL(&srv->srv_blob.dir);
1479: return 0;
1480: }
1481:
1482:
1483: /*
1484: * rpc_srv_initServer() - Init & create RPC Server
1485: *
1486: * @InstID = Instance for authentication & recognition
1487: * @concurentClients = Concurent clients at same time to this server
1488: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
1489: * @csHost = Host name or address for bind server, if NULL any address
1490: * @Port = Port for bind server, if Port == 0 default port is selected
1491: * @proto = Protocol, if == 0 choose SOCK_STREAM
1492: * return: NULL == error or !=NULL bind and created RPC server instance
1493: */
1494: rpc_srv_t *
1495: rpc_srv_initServer(u_char InstID, int concurentClients, int netBuf,
1496: const char *csHost, u_short Port, int proto)
1497: {
1498: int n = 1;
1499: rpc_srv_t *srv = NULL;
1500: sockaddr_t sa = E_SOCKADDR_INIT;
1501:
1502: if (!concurentClients || (proto < 0 || proto > SOCK_RAW)) {
1503: rpc_SetErr(EINVAL, "Invalid parameters can`t init RPC server");
1504: return NULL;
1505: }
1506: if (!Port && proto < SOCK_RAW)
1507: Port = RPC_DEFPORT;
1508: if (!e_gethostbyname(csHost, Port, &sa))
1509: return NULL;
1510: if (!proto)
1511: proto = SOCK_STREAM;
1512: if (netBuf < RPC_MIN_BUFSIZ)
1513: netBuf = BUFSIZ;
1514: else
1515: netBuf = E_ALIGN(netBuf, 2); /* align netBuf length */
1516:
1517: #ifdef HAVE_SRANDOMDEV
1518: srandomdev();
1519: #else
1520: time_t tim;
1521:
1522: srandom((time(&tim) ^ getpid()));
1523: #endif
1524:
1525: srv = e_malloc(sizeof(rpc_srv_t));
1526: if (!srv) {
1527: LOGERR;
1528: return NULL;
1529: } else
1530: memset(srv, 0, sizeof(rpc_srv_t));
1531:
1532: srv->srv_proto = proto;
1533: srv->srv_netbuf = netBuf;
1534: srv->srv_session.sess_version = RPC_VERSION;
1535: srv->srv_session.sess_instance = InstID;
1536:
1537: srv->srv_server.cli_parent = srv;
1538: memcpy(&srv->srv_server.cli_sa, &sa, sizeof srv->srv_server.cli_sa);
1539:
1540: /* init functions */
1541: pthread_mutex_init(&srv->srv_funcs.mtx, NULL);
1542: SLIST_INIT(&srv->srv_funcs);
1543: AVL_INIT(&srv->srv_funcs);
1544:
1545: /* init scheduler */
1546: srv->srv_root = schedBegin();
1547: if (!srv->srv_root) {
1548: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1549: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1550: e_free(srv);
1551: return NULL;
1552: }
1553:
1554: /* init pool for clients */
1555: srv->srv_clients = array_Init(concurentClients);
1556: if (!srv->srv_clients) {
1557: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1558: schedEnd(&srv->srv_root);
1559: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1560: e_free(srv);
1561: return NULL;
1562: }
1563:
1564: /* create server socket */
1565: srv->srv_server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family,
1566: srv->srv_proto, srv->srv_proto == SOCK_RAW ? IPPROTO_ERPC : 0);
1567: if (srv->srv_server.cli_sock == -1) {
1568: LOGERR;
1569: array_Destroy(&srv->srv_clients);
1570: schedEnd(&srv->srv_root);
1571: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1572: e_free(srv);
1573: return NULL;
1574: }
1575: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
1576: LOGERR;
1577: goto err;
1578: }
1579: if (srv->srv_proto == SOCK_STREAM)
1580: setsockopt(srv->srv_server.cli_sock, IPPROTO_TCP, TCP_NODELAY, &n, sizeof n);
1581: n = srv->srv_netbuf;
1582: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
1583: LOGERR;
1584: goto err;
1585: }
1586: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
1587: LOGERR;
1588: goto err;
1589: }
1590: if (bind(srv->srv_server.cli_sock, &srv->srv_server.cli_sa.sa,
1591: srv->srv_server.cli_sa.sa.sa_len) == -1) {
1592: LOGERR;
1593: goto err;
1594: } else
1595: fcntl(srv->srv_server.cli_sock, F_SETFL,
1596: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
1597:
1598: rpc_register_srvPing(srv);
1599:
1600: return srv;
1601: err: /* error condition */
1602: close(srv->srv_server.cli_sock);
1603: array_Destroy(&srv->srv_clients);
1604: schedEnd(&srv->srv_root);
1605: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1606: e_free(srv);
1607: return NULL;
1608: }
1609:
1610: /*
1611: * rpc_srv_endServer() - Destroy RPC server, close all opened sockets and free resources
1612: *
1613: * @psrv = RPC Server instance
1614: * return: none
1615: */
1616: void
1617: rpc_srv_endServer(rpc_srv_t ** __restrict psrv)
1618: {
1619: if (!psrv || !*psrv)
1620: return;
1621:
1622: /* if send kill to blob server */
1623: rpc_srv_endBLOBServer(*psrv);
1624:
1625: (*psrv)->srv_kill = 1;
1626: sleep(RPC_SCHED_POLLING);
1627:
1628: schedEnd(&(*psrv)->srv_root);
1629:
1630: if ((*psrv)->srv_server.cli_sa.sa.sa_family == AF_LOCAL)
1631: unlink((*psrv)->srv_server.cli_sa.sun.sun_path);
1632:
1633: pthread_mutex_destroy(&(*psrv)->srv_funcs.mtx);
1634: e_free(*psrv);
1635: *psrv = NULL;
1636: }
1637:
1638: /*
1639: * rpc_srv_loopServer() - Execute Main server loop and wait for clients requests
1640: *
1641: * @srv = RPC Server instance
1642: * return: -1 error or 0 ok, infinite loop ...
1643: */
1644: int
1645: rpc_srv_loopServer(rpc_srv_t * __restrict srv)
1646: {
1647: rpc_cli_t *c;
1648: register int i;
1649: rpc_func_t *f;
1650: struct timespec ts = { RPC_SCHED_POLLING, 0 };
1651:
1652: if (!srv) {
1653: rpc_SetErr(EINVAL, "Invalid parameter can`t start RPC server");
1654: return -1;
1655: }
1656:
1657: if (srv->srv_proto == SOCK_STREAM)
1658: if (listen(srv->srv_server.cli_sock, array_Size(srv->srv_clients)) == -1) {
1659: LOGERR;
1660: return -1;
1661: }
1662:
1663: if (!schedRead(srv->srv_root, cbProto[srv->srv_proto][CB_ACCEPTCLIENT], srv,
1664: srv->srv_server.cli_sock, NULL, 0)) {
1665: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1666: return -1;
1667: }
1668:
1669: schedPolling(srv->srv_root, &ts, NULL);
1670: /* main rpc loop */
1671: schedRun(srv->srv_root, &srv->srv_kill);
1672:
1673: /* close all clients connections & server socket */
1674: for (i = 0; i < array_Size(srv->srv_clients); i++) {
1675: c = array(srv->srv_clients, i, rpc_cli_t*);
1676: if (c) {
1677: if (srv->srv_proto == SOCK_STREAM) {
1678: shutdown(c->cli_sock, SHUT_RDWR);
1679: close(c->cli_sock);
1680: }
1681:
1682: schedCancelby(srv->srv_root, taskMAX, CRITERIA_ARG, c, NULL);
1683: ait_freeVars(&RPC_RETVARS(c));
1684: AIT_FREE_VAL(&c->cli_buf);
1685: }
1686: array_Del(srv->srv_clients, i, 42);
1687: }
1688: array_Destroy(&srv->srv_clients);
1689:
1690: if (srv->srv_proto != SOCK_EXT)
1691: close(srv->srv_server.cli_sock);
1692:
1693: /* detach exported calls */
1694: RPC_FUNCS_LOCK(&srv->srv_funcs);
1695: while ((f = SLIST_FIRST(&srv->srv_funcs))) {
1696: SLIST_REMOVE_HEAD(&srv->srv_funcs, func_next);
1697:
1698: AIT_FREE_VAL(&f->func_name);
1699: e_free(f);
1700: }
1701: srv->srv_funcs.avlh_root = NULL;
1702: RPC_FUNCS_UNLOCK(&srv->srv_funcs);
1703:
1704: return 0;
1705: }
1706:
1707:
1708: /*
1709: * rpc_srv_execCall() Execute registered call from RPC server
1710: *
1711: * @cli = RPC client
1712: * @rpc = IN RPC call structure
1713: * @funcname = Execute RPC function
1714: * @args = IN RPC calling arguments from RPC client
1715: * return: -1 error, !=-1 ok
1716: */
1717: int
1718: rpc_srv_execCall(rpc_cli_t * __restrict cli, struct tagRPCCall * __restrict rpc,
1719: ait_val_t funcname, array_t * __restrict args)
1720: {
1721: rpc_callback_t func;
1722:
1723: if (!cli || !rpc || !AIT_ADDR(&funcname)) {
1724: rpc_SetErr(EINVAL, "Invalid parameter can`t exec function");
1725: return -1;
1726: }
1727:
1728: func = AIT_GET_LIKE(&funcname, rpc_callback_t);
1729: return func(cli, rpc, args);
1730: }
1731:
1732:
1733: /*
1734: * rpc_srv_initServer2() - Init & create layer2 RPC Server
1735: *
1736: * @InstID = Instance for authentication & recognition
1737: * @concurentClients = Concurent clients at same time to this server
1738: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
1739: * @csIface = Interface name for bind server, if NULL first interface on host
1740: * return: NULL == error or !=NULL bind and created RPC server instance
1741: */
1742: rpc_srv_t *
1743: rpc_srv_initServer2(u_char InstID, int concurentClients, int netBuf, const char *csIface)
1744: {
1745: int n = 1;
1746: rpc_srv_t *srv = NULL;
1747: sockaddr_t sa = E_SOCKADDR_INIT;
1748: char szIface[64], szStr[STRSIZ];
1749: register int i;
1750: struct ifreq ifr;
1751: struct bpf_insn insns[] = {
1752: BPF_STMT(BPF_LD + BPF_H + BPF_ABS, 12),
1753: BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, RPC_DEFPORT, 0, 1),
1754: BPF_STMT(BPF_RET + BPF_K, -1),
1755: BPF_STMT(BPF_RET + BPF_K, 0),
1756: };
1757: struct bpf_program fcode = {
1758: .bf_len = sizeof(insns) / sizeof(struct bpf_insn),
1759: .bf_insns = insns
1760: };
1761:
1762: if (!concurentClients) {
1763: rpc_SetErr(EINVAL, "Invalid parameters can`t init RPC server");
1764: return NULL;
1765: }
1766: if (!csIface) {
1767: if (e_get1stiface(szIface, sizeof szIface))
1768: return NULL;
1769: } else
1770: strlcpy(szIface, csIface, sizeof szIface);
1771: if (!e_getifacebyname(szIface, &sa))
1772: return NULL;
1773:
1774: #ifdef HAVE_SRANDOMDEV
1775: srandomdev();
1776: #else
1777: time_t tim;
1778:
1779: srandom((time(&tim) ^ getpid()));
1780: #endif
1781:
1782: srv = e_malloc(sizeof(rpc_srv_t));
1783: if (!srv) {
1784: LOGERR;
1785: return NULL;
1786: } else
1787: memset(srv, 0, sizeof(rpc_srv_t));
1788:
1789: srv->srv_proto = SOCK_BPF;
1790: srv->srv_netbuf = netBuf;
1791: srv->srv_session.sess_version = RPC_VERSION;
1792: srv->srv_session.sess_instance = InstID;
1793:
1794: srv->srv_server.cli_parent = srv;
1795: memcpy(&srv->srv_server.cli_sa, &sa, sizeof srv->srv_server.cli_sa);
1796:
1797: /* init functions */
1798: pthread_mutex_init(&srv->srv_funcs.mtx, NULL);
1799: SLIST_INIT(&srv->srv_funcs);
1800: AVL_INIT(&srv->srv_funcs);
1801:
1802: /* init scheduler */
1803: srv->srv_root = schedBegin();
1804: if (!srv->srv_root) {
1805: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1806: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1807: e_free(srv);
1808: return NULL;
1809: }
1810:
1811: /* init pool for clients */
1812: srv->srv_clients = array_Init(concurentClients);
1813: if (!srv->srv_clients) {
1814: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1815: schedEnd(&srv->srv_root);
1816: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1817: e_free(srv);
1818: return NULL;
1819: }
1820:
1821: /* create server handler */
1822: for (i = 0; i < 10; i++) {
1823: memset(szStr, 0, sizeof szStr);
1824: snprintf(szStr, sizeof szStr, "/dev/bpf%d", i);
1825: srv->srv_server.cli_sock = open(szStr, O_RDWR);
1826: if (srv->srv_server.cli_sock > STDERR_FILENO)
1827: break;
1828: }
1829: if (srv->srv_server.cli_sock < 3) {
1830: LOGERR;
1831: array_Destroy(&srv->srv_clients);
1832: schedEnd(&srv->srv_root);
1833: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1834: e_free(srv);
1835: return NULL;
1836: }
1837:
1838: if (ioctl(srv->srv_server.cli_sock, BIOCIMMEDIATE, &n) == -1) {
1839: LOGERR;
1840: goto err;
1841: }
1842: if (ioctl(srv->srv_server.cli_sock, BIOCSETF, &fcode) == -1) {
1843: LOGERR;
1844: goto err;
1845: }
1846: n = (netBuf < RPC_MIN_BUFSIZ) ? getpagesize() : E_ALIGN(netBuf, 2);
1847: if (ioctl(srv->srv_server.cli_sock, BIOCSBLEN, &n) == -1) {
1848: LOGERR;
1849: goto err;
1850: } else
1851: srv->srv_netbuf = n;
1852:
1853: memset(&ifr, 0, sizeof ifr);
1854: strlcpy(ifr.ifr_name, szIface, sizeof ifr.ifr_name);
1855: if (ioctl(srv->srv_server.cli_sock, BIOCSETIF, &ifr) == -1) {
1856: LOGERR;
1857: goto err;
1858: } else
1859: fcntl(srv->srv_server.cli_sock, F_SETFL,
1860: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
1861:
1862: rpc_register_srvPing(srv);
1863:
1864: return srv;
1865: err: /* error condition */
1866: close(srv->srv_server.cli_sock);
1867: array_Destroy(&srv->srv_clients);
1868: schedEnd(&srv->srv_root);
1869: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1870: e_free(srv);
1871: return NULL;
1872: }
1873:
1874: /*
1875: * rpc_srv_initServerExt() - Init & create pipe RPC Server
1876: *
1877: * @InstID = Instance for authentication & recognition
1878: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
1879: * @fd = File descriptor
1880: * return: NULL == error or !=NULL bind and created RPC server instance
1881: */
1882: rpc_srv_t *
1883: rpc_srv_initServerExt(u_char InstID, int netBuf, int fd)
1884: {
1885: rpc_srv_t *srv = NULL;
1886:
1887: #ifdef HAVE_SRANDOMDEV
1888: srandomdev();
1889: #else
1890: time_t tim;
1891:
1892: srandom((time(&tim) ^ getpid()));
1893: #endif
1894:
1895: srv = e_malloc(sizeof(rpc_srv_t));
1896: if (!srv) {
1897: LOGERR;
1898: return NULL;
1899: } else
1900: memset(srv, 0, sizeof(rpc_srv_t));
1901:
1902: srv->srv_proto = SOCK_EXT;
1903: srv->srv_netbuf = (netBuf < RPC_MIN_BUFSIZ) ?
1904: getpagesize() : E_ALIGN(netBuf, 2);
1905: srv->srv_session.sess_version = RPC_VERSION;
1906: srv->srv_session.sess_instance = InstID;
1907:
1908: srv->srv_server.cli_parent = srv;
1909: srv->srv_server.cli_sock = fd;
1910:
1911: /* init functions */
1912: pthread_mutex_init(&srv->srv_funcs.mtx, NULL);
1913: SLIST_INIT(&srv->srv_funcs);
1914: AVL_INIT(&srv->srv_funcs);
1915:
1916: /* init scheduler */
1917: srv->srv_root = schedBegin();
1918: if (!srv->srv_root) {
1919: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1920: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1921: e_free(srv);
1922: return NULL;
1923: }
1924:
1925: /* init pool for clients */
1926: srv->srv_clients = array_Init(1);
1927: if (!srv->srv_clients) {
1928: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1929: schedEnd(&srv->srv_root);
1930: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1931: e_free(srv);
1932: return NULL;
1933: }
1934:
1935: fcntl(srv->srv_server.cli_sock, F_SETFL,
1936: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
1937:
1938: rpc_register_srvPing(srv);
1939:
1940: return srv;
1941: }
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