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 1.30 2020/06/25 19:11:00 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 - 2016
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: void
86: rpc_freeCli(rpc_cli_t * __restrict c)
87: {
88: rpc_srv_t *s = c->cli_parent;
89:
90: schedCancelby(s->srv_root, taskMAX, CRITERIA_ARG, c, NULL);
91:
92: /* free buffer */
93: AIT_FREE_VAL(&c->cli_buf);
94:
95: array_Del(s->srv_clients, c->cli_id, 0);
96: if (c)
97: e_free(c);
98: }
99:
100:
101: static inline int
102: _check4freeslot(rpc_srv_t * __restrict srv, sockaddr_t * __restrict sa)
103: {
104: rpc_cli_t *c = NULL;
105: register int i;
106:
107: /* check free slots for connect */
108: for (i = 0; i < array_Size(srv->srv_clients) &&
109: (c = array(srv->srv_clients, i, rpc_cli_t*)); i++)
110: /* check for duplicates */
111: if (sa && !e_addrcmp(&c->cli_sa, sa, 42))
112: break;
113: if (i >= array_Size(srv->srv_clients))
114: return -1; /* no more free slots! */
115:
116: return i;
117: }
118:
119: static rpc_cli_t *
120: _allocClient(rpc_srv_t * __restrict srv, sockaddr_t * __restrict sa)
121: {
122: rpc_cli_t *c = NULL;
123: int n;
124:
125: if (srv->srv_proto != SOCK_EXT)
126: n = _check4freeslot(srv, sa);
127: else
128: n = 0;
129: if (n == -1)
130: return NULL;
131: else
132: c = array(srv->srv_clients, n, rpc_cli_t*);
133:
134: if (!c) {
135: c = e_malloc(sizeof(rpc_cli_t));
136: if (!c) {
137: LOGERR;
138: srv->srv_kill = 1;
139: return NULL;
140: } else {
141: memset(c, 0, sizeof(rpc_cli_t));
142: array_Set(srv->srv_clients, n, c);
143: c->cli_id = n;
144: c->cli_parent = srv;
145: }
146:
147: /* alloc empty buffer */
148: AIT_SET_BUFSIZ(&c->cli_buf, 0, srv->srv_netbuf);
149: }
150:
151: return c;
152: }
153:
154:
155: static void *
156: freeClient(sched_task_t *task)
157: {
158: rpc_freeCli(TASK_ARG(task));
159:
160: taskExit(task, NULL);
161: }
162:
163: static void *
164: closeClient(sched_task_t *task)
165: {
166: int sock = ((rpc_cli_t*) TASK_ARG(task))->cli_sock;
167:
168: rpc_freeCli(TASK_ARG(task));
169:
170: /* close client socket */
171: shutdown(sock, SHUT_RDWR);
172: close(sock);
173: taskExit(task, NULL);
174: }
175:
176: static void *
177: txPacket(sched_task_t *task)
178: {
179: rpc_cli_t *c = TASK_ARG(task);
180: rpc_srv_t *s = c->cli_parent;
181: rpc_func_t *f = NULL;
182: u_char *buf = AIT_GET_BUF(&c->cli_buf);
183: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
184: int ret, wlen = sizeof(struct tagRPCCall);
185: #ifdef TCP_SESSION_TIMEOUT
186: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
187:
188: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
189: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
190: TASK_ARG(task), ts, TASK_ARG(task), 0);
191: #endif
192:
193: if (rpc->call_argc) {
194: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
195: if (!f) {
196: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
197:
198: rpc->call_argc ^= rpc->call_argc;
199: RPC_SET_RETURN(rpc, -1);
200: RPC_SET_ERRNO(rpc, rpc_Errno);
201: } else if (rpc_pktFreeSpace(c) > s->srv_netbuf) {
202: rpc_SetErr(EMSGSIZE, "Message too long");
203:
204: rpc->call_argc ^= rpc->call_argc;
205: RPC_SET_RETURN(rpc, -1);
206: RPC_SET_ERRNO(rpc, rpc_Errno);
207: } else {
208: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
209: /* Go Encapsulate variables */
210: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
211: RPC_RETVARS(c));
212: if (ret == -1) {
213: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
214:
215: rpc->call_argc ^= rpc->call_argc;
216: RPC_SET_RETURN(rpc, -1);
217: RPC_SET_ERRNO(rpc, rpc_Errno);
218: } else
219: wlen += ret;
220: }
221: }
222:
223: /* Free return values */
224: ait_freeVars(&c->cli_vars);
225:
226: rpc->call_len = htonl(wlen);
227: rpc->call_io = RPC_ACK;
228:
229: #if 0
230: /* calculate CRC */
231: rpc->call_crc ^= rpc->call_crc;
232: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
233: #endif
234:
235: /* send reply */
236: ret = send(TASK_FD(task), buf, wlen, MSG_NOSIGNAL);
237: if (ret == -1) {
238: /* close connection */
239: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
240: TASK_ARG(task), 0, NULL, 0);
241: }
242:
243: taskExit(task, NULL);
244: }
245:
246: static void *
247: execCall(sched_task_t *task)
248: {
249: rpc_cli_t *c = TASK_ARG(task);
250: rpc_srv_t *s = c->cli_parent;
251: rpc_func_t *f = NULL;
252: array_t *arr = NULL;
253: u_char *buf = AIT_GET_BUF(&c->cli_buf);
254: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
255: int argc = rpc->call_argc;
256:
257: /* Go decapsulate variables ... */
258: if (argc) {
259: arr = ait_buffer2vars(buf + sizeof(struct tagRPCCall),
260: AIT_LEN(&c->cli_buf) - sizeof(struct tagRPCCall), argc, 42);
261: if (!arr) {
262: rpc_SetErr(ERPCMISMATCH, "#%d - %s", elwix_GetErrno(), elwix_GetError());
263:
264: rpc->call_argc ^= rpc->call_argc;
265: RPC_SET_RETURN(rpc, -1);
266: RPC_SET_ERRNO(rpc, rpc_Errno);
267: taskExit(task, NULL);
268: }
269: } else
270: arr = NULL;
271:
272: if (!(f = rpc_srv_getCall(s, ntohs(rpc->call_tag)))) {
273: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
274:
275: rpc->call_argc ^= rpc->call_argc;
276: RPC_SET_RETURN(rpc, -1);
277: RPC_SET_ERRNO(rpc, rpc_Errno);
278: } else {
279: /* if client doesn't want reply */
280: RPC_SET_RETURN(rpc, rpc_srv_execCall(c, rpc, f->func_name, arr));
281: if (rpc->call_rep.ret == htonl(-1)) {
282: if (!rpc->call_rep.eno) {
283: LOGERR;
284: RPC_SET_ERRNO(rpc, rpc_Errno);
285: }
286: rpc->call_argc ^= rpc->call_argc;
287: ait_freeVars(&c->cli_vars);
288: } else {
289: rpc->call_rep.eno ^= rpc->call_rep.eno;
290: rpc->call_argc ^= rpc->call_argc;
291: if (TASK_VAL(task)) {
292: /* without reply */
293: ait_freeVars(&c->cli_vars);
294: } else {
295: /* reply */
296: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
297: }
298: }
299: }
300:
301: array_Destroy(&arr);
302: taskExit(task, NULL);
303: }
304:
305: static void *
306: rxPacket(sched_task_t *task)
307: {
308: rpc_cli_t *c = TASK_ARG(task);
309: rpc_srv_t *s = c->cli_parent;
310: int len, noreply = 0, rlen = AIT_LEN(&c->cli_buf);
311: #if 0
312: u_short crc;
313: #endif
314: u_char *buf = AIT_GET_BUF(&c->cli_buf);
315: struct tagRPCCall b, *rpc = (struct tagRPCCall*) buf;
316: #ifdef TCP_SESSION_TIMEOUT
317: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
318:
319: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
320: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
321: TASK_ARG(task), ts, TASK_ARG(task), 0);
322: #endif
323:
324: /* prepare rx */
325: len = recv(TASK_FD(task), &b, sizeof b, MSG_PEEK);
326: if (len == sizeof b)
327: rlen = ntohl(b.call_len);
328:
329: rlen = recv(TASK_FD(task), buf, rlen, 0);
330: if (rlen == -1) {
331: /* close connection */
332: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
333: TASK_ARG(task), 0, NULL, 0);
334: taskExit(task, NULL);
335: }
336: if (rlen < sizeof(struct tagRPCCall)) {
337: rpc_SetErr(ERPCMISMATCH, "Short RPC packet");
338:
339: rpc->call_argc ^= rpc->call_argc;
340: RPC_SET_RETURN(rpc, -1);
341: RPC_SET_ERRNO(rpc, rpc_Errno);
342: goto err;
343: } else
344: len = ntohl(rpc->call_len);
345: if (rlen < len || len > AIT_LEN(&c->cli_buf)) {
346: rpc_SetErr(ERPCMISMATCH, "Short RPC packet");
347:
348: rpc->call_argc ^= rpc->call_argc;
349: RPC_SET_RETURN(rpc, -1);
350: RPC_SET_ERRNO(rpc, rpc_Errno);
351: goto err;
352: }
353:
354: /* skip loop packet */
355: if (rpc->call_io & RPC_ACK) {
356: schedReadSelf(task);
357: taskExit(task, NULL);
358: }
359:
360: #if 0
361: /* check integrity of packet */
362: crc = ntohs(rpc->call_crc);
363: rpc->call_crc ^= rpc->call_crc;
364: if (crc != crcFletcher16((u_short*) rpc, len / 2)) {
365: rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet");
366:
367: rpc->call_argc ^= rpc->call_argc;
368: RPC_SET_RETURN(rpc, -1);
369: RPC_SET_ERRNO(rpc, rpc_Errno);
370: goto err;
371: }
372: #endif
373:
374: /* check RPC packet session info */
375: if (rpc_chkPktSession(&rpc->call_session, &s->srv_session)) {
376: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
377:
378: rpc->call_argc ^= rpc->call_argc;
379: RPC_SET_RETURN(rpc, -1);
380: RPC_SET_ERRNO(rpc, rpc_Errno);
381: goto err;
382: }
383:
384: noreply = RPC_CHK_NOREPLY(rpc);
385:
386: /* execute RPC call */
387: schedEvent(TASK_ROOT(task), execCall, TASK_ARG(task), (int) noreply, rpc, len);
388: err:
389: /* send RPC reply */
390: if (!noreply)
391: schedWrite(TASK_ROOT(task), cbProto[s->srv_proto][CB_TXPACKET],
392: TASK_ARG(task), TASK_FD(task), rpc, len);
393:
394: /* lets get next packet */
395: schedReadSelf(task);
396: taskExit(task, NULL);
397: }
398:
399: static void *
400: acceptClients(sched_task_t *task)
401: {
402: rpc_srv_t *srv = TASK_ARG(task);
403: rpc_cli_t *c = NULL;
404: socklen_t salen = E_SOCKADDR_MAX;
405: int sock;
406: #ifdef TCP_SESSION_TIMEOUT
407: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
408: #endif
409:
410: c = _allocClient(srv, NULL);
411: if (!c) {
412: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
413: if ((sock = accept(TASK_FD(task), NULL, NULL)) != -1) {
414: shutdown(sock, SHUT_RDWR);
415: close(sock);
416: }
417: goto end;
418: }
419:
420: /* accept client */
421: c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen);
422: if (c->cli_sock == -1) {
423: LOGERR;
424: AIT_FREE_VAL(&c->cli_buf);
425: array_Del(srv->srv_clients, c->cli_id, 42);
426: goto end;
427: } else {
428: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
429: fcntl(c->cli_sock, F_SETFD, FD_CLOEXEC);
430: }
431:
432: #ifdef TCP_SESSION_TIMEOUT
433: /* armed timer for close stateless connection */
434: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
435: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT], c,
436: ts, c, 0);
437: #endif
438: schedRead(TASK_ROOT(task), cbProto[srv->srv_proto][CB_RXPACKET], c,
439: c->cli_sock, NULL, 0);
440: end:
441: schedReadSelf(task);
442: taskExit(task, NULL);
443: }
444:
445:
446: static void *
447: txUDPPacket(sched_task_t *task)
448: {
449: rpc_cli_t *c = TASK_ARG(task);
450: rpc_srv_t *s = c->cli_parent;
451: rpc_func_t *f = NULL;
452: u_char *buf = AIT_GET_BUF(&c->cli_buf);
453: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
454: int ret, wlen = sizeof(struct tagRPCCall);
455: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
456:
457: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
458: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
459: TASK_ARG(task), ts, TASK_ARG(task), 0);
460:
461: if (rpc->call_argc) {
462: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
463: if (!f) {
464: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
465:
466: rpc->call_argc ^= rpc->call_argc;
467: RPC_SET_RETURN(rpc, -1);
468: RPC_SET_ERRNO(rpc, rpc_Errno);
469: } else if (rpc_pktFreeSpace(c) > s->srv_netbuf) {
470: rpc_SetErr(EMSGSIZE, "Message too long");
471:
472: rpc->call_argc ^= rpc->call_argc;
473: RPC_SET_RETURN(rpc, -1);
474: RPC_SET_ERRNO(rpc, rpc_Errno);
475: } else {
476: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
477: /* Go Encapsulate variables */
478: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
479: RPC_RETVARS(c));
480: if (ret == -1) {
481: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
482:
483: rpc->call_argc ^= rpc->call_argc;
484: RPC_SET_RETURN(rpc, -1);
485: RPC_SET_ERRNO(rpc, rpc_Errno);
486: } else
487: wlen += ret;
488: }
489: }
490:
491: /* Free return values */
492: ait_freeVars(&c->cli_vars);
493:
494: rpc->call_len = htonl(wlen);
495: rpc->call_io = RPC_ACK;
496:
497: /* calculate CRC */
498: rpc->call_crc ^= rpc->call_crc;
499: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
500:
501: /* send reply */
502: ret = sendto(TASK_FD(task), buf, wlen, MSG_NOSIGNAL,
503: &c->cli_sa.sa, e_addrlen(&c->cli_sa));
504: if (ret == -1) {
505: /* close connection */
506: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
507: TASK_ARG(task), 0, NULL, 0);
508: }
509:
510: taskExit(task, NULL);
511: }
512:
513: static void *
514: rxUDPPacket(sched_task_t *task)
515: {
516: rpc_srv_t *srv = TASK_ARG(task);
517: rpc_cli_t *c = NULL;
518: int len, noreply = 0, rlen;
519: u_short crc;
520: struct tagRPCCall *rpc;
521: sockaddr_t sa;
522: socklen_t salen = E_SOCKADDR_MAX;
523: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
524: ait_val_t b = AIT_VAL_INIT;
525:
526: /* receive connect packet */
527: AIT_SET_BUF(&b, NULL, srv->srv_netbuf);
528: #ifndef __linux__
529: sa.ss.ss_len = salen;
530: #endif
531: rlen = recvfrom(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b), 0, &sa.sa, &salen);
532: rpc = (struct tagRPCCall*) AIT_GET_BUF(&b);
533: if (rlen < sizeof(struct tagRPCCall))
534: goto end;
535: else
536: len = ntohl(rpc->call_len);
537: if (rlen < len || len > srv->srv_netbuf)
538: goto end;
539:
540: /* skip loop packet */
541: if (rpc->call_io & RPC_ACK)
542: goto end;
543:
544: /* check integrity of packet */
545: crc = ntohs(rpc->call_crc);
546: rpc->call_crc ^= rpc->call_crc;
547: if (crc != crcFletcher16((u_short*) rpc, len / 2))
548: goto end;
549:
550: /* check RPC packet session info */
551: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session))
552: goto end;
553:
554: c = _allocClient(srv, &sa);
555: if (!c) {
556: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
557: usleep(2000); /* blocked client delay */
558: goto end;
559: } else {
560: memcpy(AIT_GET_BUF(&c->cli_buf), AIT_GET_BUF(&b), len);
561: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
562:
563: c->cli_sock = TASK_FD(task);
564: memcpy(&c->cli_sa, &sa, sizeof c->cli_sa);
565:
566: /* armed timer for close stateless connection */
567: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
568: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
569: c, ts, c, 0);
570: }
571:
572: noreply = RPC_CHK_NOREPLY(rpc);
573:
574: /* execute RPC call */
575: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
576:
577: /* send RPC reply */
578: if (!noreply)
579: schedWrite(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
580: c, TASK_FD(task), rpc, len);
581: end:
582: AIT_FREE_VAL(&b);
583: schedReadSelf(task);
584: taskExit(task, NULL);
585: }
586:
587:
588: static void *
589: txRAWPacket(sched_task_t *task)
590: {
591: rpc_cli_t *c = TASK_ARG(task);
592: rpc_srv_t *s = c->cli_parent;
593: rpc_func_t *f = NULL;
594: u_char *buf = AIT_GET_BUF(&c->cli_buf);
595: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
596: int ret, wlen = sizeof(struct tagRPCCall);
597: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
598:
599: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
600: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
601: TASK_ARG(task), ts, TASK_ARG(task), 0);
602:
603: if (rpc->call_argc) {
604: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
605: if (!f) {
606: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
607:
608: rpc->call_argc ^= rpc->call_argc;
609: RPC_SET_RETURN(rpc, -1);
610: RPC_SET_ERRNO(rpc, rpc_Errno);
611: } else if (rpc_pktFreeSpace(c) > s->srv_netbuf) {
612: rpc_SetErr(EMSGSIZE, "Message too long");
613:
614: rpc->call_argc ^= rpc->call_argc;
615: RPC_SET_RETURN(rpc, -1);
616: RPC_SET_ERRNO(rpc, rpc_Errno);
617: } else {
618: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
619: /* Go Encapsulate variables */
620: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
621: RPC_RETVARS(c));
622: if (ret == -1) {
623: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
624:
625: rpc->call_argc ^= rpc->call_argc;
626: RPC_SET_RETURN(rpc, -1);
627: RPC_SET_ERRNO(rpc, rpc_Errno);
628: } else
629: wlen += ret;
630: }
631: }
632:
633: /* Free return values */
634: ait_freeVars(&c->cli_vars);
635:
636: rpc->call_len = htonl(wlen);
637: rpc->call_io = RPC_ACK;
638:
639: /* calculate CRC */
640: rpc->call_crc ^= rpc->call_crc;
641: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
642:
643: /* send reply */
644: ret = sendto(TASK_FD(task), buf, wlen, MSG_NOSIGNAL,
645: &c->cli_sa.sa, e_addrlen(&c->cli_sa));
646: if (ret == -1) {
647: /* close connection */
648: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
649: TASK_ARG(task), 0, NULL, 0);
650: }
651:
652: taskExit(task, NULL);
653: }
654:
655: static void *
656: rxRAWPacket(sched_task_t *task)
657: {
658: rpc_srv_t *srv = TASK_ARG(task);
659: rpc_cli_t *c = NULL;
660: int len, noreply = 0, rlen;
661: u_short crc;
662: struct tagRPCCall *rpc;
663: sockaddr_t sa;
664: socklen_t salen = E_SOCKADDR_MAX;
665: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
666: ait_val_t b = AIT_VAL_INIT;
667:
668: /* receive connect packet */
669: AIT_SET_BUF(&b, NULL, srv->srv_netbuf);
670: #ifndef __linux__
671: sa.ss.ss_len = salen;
672: #endif
673: rlen = recvfrom(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b), 0, &sa.sa, &salen);
674: if (sa.sa.sa_family == AF_INET) {
675: struct ip *h;
676: h = (struct ip*) AIT_GET_BUF(&b);
677: if (rlen < ntohs(h->ip_len) || h->ip_p != IPPROTO_ERPC)
678: goto end;
679: else {
680: rlen -= sizeof(struct ip);
681: rpc = (struct tagRPCCall*) (h + 1);
682: }
683: } else {
684: #ifdef IPV6_REMOVE_HEADER
685: struct ip6_hdr *h;
686: h = (struct ip6_hdr*) AIT_GET_BUF(&b);
687: if (rlen < ntohs(h->ip6_plen) || h->ip6_nxt != IPPROTO_ERPC)
688: goto end;
689: else {
690: rlen -= sizeof(struct ip6_hdr);
691: rpc = (struct tagRPCCall*) (h + 1);
692: }
693: #else
694: rpc = (struct tagRPCCall*) AIT_GET_BUF(&b);
695: #endif
696: }
697: if (rlen < sizeof(struct tagRPCCall))
698: goto end;
699: else
700: len = ntohl(rpc->call_len);
701: if (rlen < len || len > srv->srv_netbuf)
702: goto end;
703:
704: /* skip loop packet */
705: if (rpc->call_io & RPC_ACK)
706: goto end;
707:
708: /* check integrity of packet */
709: crc = ntohs(rpc->call_crc);
710: rpc->call_crc ^= rpc->call_crc;
711: if (crc != crcFletcher16((u_short*) rpc, len / 2))
712: goto end;
713:
714: /* check RPC packet session info */
715: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session))
716: goto end;
717:
718: c = _allocClient(srv, &sa);
719: if (!c) {
720: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
721: usleep(2000); /* blocked client delay */
722: goto end;
723: } else {
724: memcpy(AIT_GET_BUF(&c->cli_buf), rpc, len);
725: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
726:
727: c->cli_sock = TASK_FD(task);
728: memcpy(&c->cli_sa, &sa, sizeof c->cli_sa);
729:
730: /* armed timer for close stateless connection */
731: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
732: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
733: c, ts, c, 0);
734: }
735:
736: noreply = RPC_CHK_NOREPLY(rpc);
737:
738: /* execute RPC call */
739: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
740:
741: /* send RPC reply */
742: if (!noreply)
743: schedWrite(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
744: c, TASK_FD(task), rpc, len);
745: end:
746: AIT_FREE_VAL(&b);
747: schedReadSelf(task);
748: taskExit(task, NULL);
749: }
750:
751:
752: static void *
753: txBPFPacket(sched_task_t *task)
754: {
755: #ifndef __linux__
756: rpc_cli_t *c = TASK_ARG(task);
757: rpc_srv_t *s = c->cli_parent;
758: rpc_func_t *f = NULL;
759: u_char *buf = AIT_GET_BUF(&c->cli_buf);
760: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
761: int ret, wlen = sizeof(struct tagRPCCall);
762: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
763: struct ether_header *eh;
764: ait_val_t b = AIT_VAL_INIT;
765:
766: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
767: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
768: TASK_ARG(task), ts, TASK_ARG(task), 0);
769:
770: if (rpc->call_argc) {
771: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
772: if (!f) {
773: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
774:
775: rpc->call_argc ^= rpc->call_argc;
776: RPC_SET_RETURN(rpc, -1);
777: RPC_SET_ERRNO(rpc, rpc_Errno);
778: } else if (rpc_pktFreeSpace(c) > s->srv_netbuf) {
779: rpc_SetErr(EMSGSIZE, "Message too long");
780:
781: rpc->call_argc ^= rpc->call_argc;
782: RPC_SET_RETURN(rpc, -1);
783: RPC_SET_ERRNO(rpc, rpc_Errno);
784: } else {
785: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
786: /* Go Encapsulate variables */
787: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
788: RPC_RETVARS(c));
789: if (ret == -1) {
790: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
791:
792: rpc->call_argc ^= rpc->call_argc;
793: RPC_SET_RETURN(rpc, -1);
794: RPC_SET_ERRNO(rpc, rpc_Errno);
795: } else
796: wlen += ret;
797: }
798: }
799:
800: /* Free return values */
801: ait_freeVars(&RPC_RETVARS(c));
802:
803: rpc->call_len = htonl(wlen);
804: rpc->call_io = RPC_ACK;
805:
806: /* calculate CRC */
807: rpc->call_crc ^= rpc->call_crc;
808: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
809:
810: /* send reply */
811: AIT_SET_BUF(&b, NULL, wlen + ETHER_HDR_LEN);
812: eh = (struct ether_header*) AIT_GET_BUF(&b);
813: memcpy(eh->ether_dhost, LLADDR(&c->cli_sa.sdl), ETHER_ADDR_LEN);
814: eh->ether_type = htons(RPC_DEFPORT);
815: memcpy(eh + 1, buf, wlen);
816:
817: ret = write(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b));
818: AIT_FREE_VAL(&b);
819: if (ret == -1) {
820: /* close connection */
821: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
822: TASK_ARG(task), 0, NULL, 0);
823: }
824: #else
825: rpc_SetErr(ENOTSUP, "Feature isn't supported on Linux!");
826: #endif
827:
828: taskExit(task, NULL);
829: }
830:
831: static void *
832: rxBPFPacket(sched_task_t *task)
833: {
834: #ifndef __linux__
835: rpc_srv_t *srv = TASK_ARG(task);
836: rpc_cli_t *c = NULL;
837: int len, rlen, noreply;
838: u_short crc;
839: struct tagRPCCall *rpc;
840: sockaddr_t sa;
841: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
842: struct bpf_hdr *h;
843: struct ether_header *eh;
844: ait_val_t b = AIT_VAL_INIT;
845:
846: /* receive connect packet */
847: AIT_SET_BUF(&b, NULL, srv->srv_netbuf);
848: rlen = read(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b));
849: h = (struct bpf_hdr*) AIT_GET_BUF(&b);
850: rlen -= h->bh_hdrlen;
851: if (rlen < h->bh_datalen || h->bh_caplen != h->bh_datalen ||
852: rlen < ETHER_HDR_LEN + sizeof(struct tagRPCCall))
853: goto end;
854: else {
855: rlen = h->bh_caplen;
856: eh = (struct ether_header*) (AIT_GET_BUF(&b) + h->bh_hdrlen);
857: rlen -= ETHER_HDR_LEN;
858: rpc = (struct tagRPCCall*) (eh + 1);
859:
860: if (eh->ether_type != ntohs(RPC_DEFPORT))
861: goto end;
862: else
863: e_getlinkbymac((const ether_addr_t*) eh->ether_shost, &sa);
864: }
865: if (rlen < sizeof(struct tagRPCCall))
866: goto end;
867: else
868: len = ntohl(rpc->call_len);
869: if (rlen < len || len > srv->srv_netbuf)
870: goto end;
871:
872: #ifdef CHECK_ETHACK
873: /* skip loop packet */
874: if (rpc->call_io & RPC_ACK)
875: goto end;
876: #endif
877:
878: /* check integrity of packet */
879: crc = ntohs(rpc->call_crc);
880: rpc->call_crc ^= rpc->call_crc;
881: if (crc != crcFletcher16((u_short*) rpc, len / 2))
882: goto end;
883:
884: /* check RPC packet session info */
885: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session))
886: goto end;
887:
888: c = _allocClient(srv, &sa);
889: if (!c) {
890: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
891: usleep(2000); /* blocked client delay */
892: goto end;
893: } else {
894: memcpy(AIT_GET_BUF(&c->cli_buf), rpc, len);
895: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
896:
897: c->cli_sock = TASK_FD(task);
898: memcpy(&c->cli_sa, &sa, sizeof c->cli_sa);
899:
900: /* armed timer for close stateless connection */
901: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
902: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
903: c, ts, c, 0);
904: }
905:
906: noreply = RPC_CHK_NOREPLY(rpc);
907:
908: /* execute RPC call */
909: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
910:
911: /* send RPC reply */
912: if (!noreply)
913: schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
914: c, TASK_FD(task), rpc, len);
915: end:
916: AIT_FREE_VAL(&b);
917: schedReadSelf(task);
918: #else
919: rpc_SetErr(ENOTSUP, "Feature isn't supported on Linux!");
920: #endif
921:
922: taskExit(task, NULL);
923: }
924:
925:
926: static void *
927: txEXTPacket(sched_task_t *task)
928: {
929: rpc_cli_t *c = TASK_ARG(task);
930: rpc_srv_t *s = c->cli_parent;
931: rpc_func_t *f = NULL;
932: u_char *buf = AIT_GET_BUF(&c->cli_buf);
933: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
934: int ret, wlen = sizeof(struct tagRPCCall);
935: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
936:
937: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
938: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
939: TASK_ARG(task), ts, TASK_ARG(task), 0);
940:
941: if (rpc->call_argc) {
942: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
943: if (!f) {
944: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
945:
946: rpc->call_argc ^= rpc->call_argc;
947: RPC_SET_RETURN(rpc, -1);
948: RPC_SET_ERRNO(rpc, rpc_Errno);
949: } else if (rpc_pktFreeSpace(c) > s->srv_netbuf) {
950: rpc_SetErr(EMSGSIZE, "Message too long");
951:
952: rpc->call_argc ^= rpc->call_argc;
953: RPC_SET_RETURN(rpc, -1);
954: RPC_SET_ERRNO(rpc, rpc_Errno);
955: } else {
956: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
957: /* Go Encapsulate variables */
958: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
959: RPC_RETVARS(c));
960: if (ret == -1) {
961: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
962:
963: rpc->call_argc ^= rpc->call_argc;
964: RPC_SET_RETURN(rpc, -1);
965: RPC_SET_ERRNO(rpc, rpc_Errno);
966: } else
967: wlen += ret;
968: }
969: }
970:
971: /* Free return values */
972: ait_freeVars(&RPC_RETVARS(c));
973:
974: rpc->call_len = htonl(wlen);
975: rpc->call_io = RPC_ACK;
976:
977: /* send reply */
978: ret = write(TASK_FD(task), buf, wlen);
979: if (ret == -1) {
980: /* close connection */
981: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
982: TASK_ARG(task), 0, NULL, 0);
983: }
984:
985: taskExit(task, NULL);
986: }
987:
988: static void *
989: rxEXTPacket(sched_task_t *task)
990: {
991: rpc_srv_t *srv = TASK_ARG(task);
992: rpc_cli_t *c = NULL;
993: int len, noreply = 0, rlen = AIT_LEN(&c->cli_buf);
994: struct tagRPCCall *rpc;
995: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
996: sockaddr_t sa;
997: ait_val_t b = AIT_VAL_INIT;
998:
999: memset(&sa, 0, sizeof sa);
1000: /* receive connect packet */
1001: AIT_SET_BUF(&b, NULL, srv->srv_netbuf);
1002: rlen = read(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b));
1003: rpc = (struct tagRPCCall*) AIT_GET_BUF(&b);
1004: if (rlen < sizeof(struct tagRPCCall))
1005: goto end;
1006: else
1007: len = ntohl(rpc->call_len);
1008: if (rlen < len || len > srv->srv_netbuf)
1009: goto end;
1010:
1011: /* skip loop packet */
1012: if (rpc->call_io & RPC_ACK)
1013: goto end;
1014:
1015: /* check RPC packet session info */
1016: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session))
1017: goto end;
1018:
1019: c = _allocClient(srv, &sa);
1020: if (!c) {
1021: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
1022: usleep(2000); /* blocked client delay */
1023: goto end;
1024: } else {
1025: memcpy(AIT_GET_BUF(&c->cli_buf), AIT_GET_BUF(&b), len);
1026: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
1027:
1028: c->cli_sock = TASK_FD(task);
1029:
1030: /* armed timer for close stateless connection */
1031: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
1032: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
1033: c, ts, c, 0);
1034: }
1035:
1036: noreply = RPC_CHK_NOREPLY(rpc);
1037:
1038: /* execute RPC call */
1039: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
1040:
1041: /* send RPC reply */
1042: if (!noreply)
1043: schedWrite(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
1044: c, TASK_FD(task), rpc, len);
1045: end:
1046: AIT_FREE_VAL(&b);
1047: schedReadSelf(task);
1048: taskExit(task, NULL);
1049: }
1050:
1051: /* ------------------------------------------------------ */
1052:
1053: void
1054: rpc_freeBLOBCli(rpc_cli_t * __restrict c)
1055: {
1056: rpc_srv_t *s = c->cli_parent;
1057:
1058: schedCancelby(s->srv_blob.root, taskMAX, CRITERIA_ARG, c, NULL);
1059:
1060: /* free buffer */
1061: AIT_FREE_VAL(&c->cli_buf);
1062:
1063: array_Del(s->srv_blob.clients, c->cli_id, 0);
1064: if (c)
1065: e_free(c);
1066: }
1067:
1068:
1069: static void *
1070: closeBLOBClient(sched_task_t *task)
1071: {
1072: int sock = ((rpc_cli_t*) TASK_ARG(task))->cli_sock;
1073:
1074: rpc_freeBLOBCli(TASK_ARG(task));
1075:
1076: /* close client socket */
1077: shutdown(sock, SHUT_RDWR);
1078: close(sock);
1079: taskExit(task, NULL);
1080: }
1081:
1082: static void *
1083: txBLOB(sched_task_t *task)
1084: {
1085: rpc_cli_t *c = TASK_ARG(task);
1086: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1087: int wlen = sizeof(struct tagBLOBHdr);
1088:
1089: /* send reply */
1090: wlen = send(TASK_FD(task), buf, wlen, MSG_NOSIGNAL);
1091: if (wlen == -1 || wlen != sizeof(struct tagBLOBHdr)) {
1092: /* close blob connection */
1093: schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0);
1094: }
1095:
1096: taskExit(task, NULL);
1097: }
1098:
1099: static void *
1100: rxBLOB(sched_task_t *task)
1101: {
1102: rpc_cli_t *c = TASK_ARG(task);
1103: rpc_srv_t *s = c->cli_parent;
1104: rpc_blob_t *b;
1105: struct tagBLOBHdr blob;
1106: int rlen;
1107:
1108: memset(&blob, 0, sizeof blob);
1109: rlen = recv(TASK_FD(task), &blob, sizeof blob, 0);
1110: if (rlen < 1) {
1111: /* close blob connection */
1112: schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0);
1113: taskExit(task, NULL);
1114: }
1115:
1116: /* check BLOB packet */
1117: if (rlen < sizeof(struct tagBLOBHdr)) {
1118: rpc_SetErr(ERPCMISMATCH, "Short BLOB packet");
1119:
1120: schedReadSelf(task);
1121: taskExit(task, NULL);
1122: }
1123:
1124: /* check RPC packet session info */
1125: if (rpc_chkPktSession(&blob.hdr_session, &s->srv_session)) {
1126: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
1127: blob.hdr_cmd = error;
1128: goto end;
1129: }
1130:
1131: /* Go to proceed packet ... */
1132: switch (blob.hdr_cmd) {
1133: case get:
1134: if (!(b = rpc_srv_getBLOB(s, ntohl(blob.hdr_var)))) {
1135: rpc_SetErr(EINVAL, "Var=%x not found", ntohl(blob.hdr_var));
1136: blob.hdr_cmd = no;
1137: RPC_SET_BLOB_RET(&blob, -1);
1138: break;
1139: } else
1140: blob.hdr_len = htonl(b->blob_len);
1141:
1142: if (rpc_srv_blobMap(s, b) != -1) {
1143: /* deliver BLOB variable to client */
1144: blob.hdr_ret = htonl(rpc_srv_sendBLOB(c, b));
1145: rpc_srv_blobUnmap(b);
1146: } else {
1147: blob.hdr_cmd = error;
1148: RPC_SET_BLOB_RET(&blob, -1);
1149: }
1150: break;
1151: case set:
1152: if ((b = rpc_srv_registerBLOB(s, ntohl(blob.hdr_len),
1153: ntohl(blob.hdr_ret)))) {
1154: /* set new BLOB variable for reply :) */
1155: blob.hdr_var = htonl(b->blob_var);
1156:
1157: /* receive BLOB from client */
1158: blob.hdr_ret = htonl(rpc_srv_recvBLOB(c, b));
1159: rpc_srv_blobUnmap(b);
1160: } else {
1161: blob.hdr_cmd = error;
1162: RPC_SET_BLOB_RET(&blob, -1);
1163: }
1164: break;
1165: case unset:
1166: if (rpc_srv_unregisterBLOB(s, ntohl(blob.hdr_var)) == -1) {
1167: blob.hdr_cmd = error;
1168: RPC_SET_BLOB_RET(&blob, -1);
1169: }
1170: break;
1171: default:
1172: rpc_SetErr(EPROCUNAVAIL, "Unsupported BLOB command %d", blob.hdr_cmd);
1173: blob.hdr_cmd = error;
1174: RPC_SET_BLOB_RET(&blob, -1);
1175: }
1176:
1177: end:
1178: memcpy(AIT_ADDR(&c->cli_buf), &blob, sizeof blob);
1179: schedWrite(TASK_ROOT(task), txBLOB, TASK_ARG(task), TASK_FD(task), NULL, 0);
1180: schedReadSelf(task);
1181: taskExit(task, NULL);
1182: }
1183:
1184: static void *
1185: flushBLOB(sched_task_t *task)
1186: {
1187: #ifdef atomic_load_acq_ptr
1188: uintptr_t sigArg = atomic_load_acq_ptr(&_glSigArg);
1189: #else
1190: uintptr_t sigArg = *((volatile uintptr_t*) &_glSigArg);
1191: #endif
1192: rpc_srv_t *srv = sigArg ? (void*) sigArg : TASK_ARG(task);
1193: rpc_blob_t *b, *tmp;
1194:
1195: TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) {
1196: TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node);
1197:
1198: rpc_srv_blobFree(srv, b);
1199: e_free(b);
1200: }
1201:
1202: if (sigArg) {
1203: /* disabled kqueue support in libaitsched */
1204: struct sigaction sa;
1205:
1206: memset(&sa, 0, sizeof sa);
1207: sigemptyset(&sa.sa_mask);
1208: sa.sa_handler = (void (*)(int)) flushBLOB;
1209: sa.sa_flags = SA_RESTART | SA_RESETHAND;
1210: sigaction(SIGFBLOB, &sa, NULL);
1211: return NULL;
1212: } else {
1213: schedSignalSelf(task);
1214: taskExit(task, NULL);
1215: }
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 = E_SOCKADDR_MAX;
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: fcntl(c->cli_sock, F_SETFD, FD_CLOEXEC);
1270: }
1271:
1272: schedRead(TASK_ROOT(task), rxBLOB, c, c->cli_sock, NULL, 0);
1273: end:
1274: schedReadSelf(task);
1275: taskExit(task, NULL);
1276: }
1277:
1278: /* ------------------------------------------------------ */
1279:
1280: /*
1281: * rpc_srv_initBLOBServer() - Init & create BLOB Server
1282: *
1283: * @srv = RPC server instance
1284: * @Port = Port for bind server, if Port == 0 default port is selected
1285: * @diskDir = Disk place for BLOB file objects
1286: * return: -1 == error or 0 bind and created BLOB server instance
1287: */
1288: int
1289: rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, u_short Port, const char *diskDir)
1290: {
1291: int n = 1;
1292: socklen_t salen;
1293:
1294: if (!srv || srv->srv_kill) {
1295: rpc_SetErr(EINVAL, "Invalid parameters can`t init BLOB server");
1296: return -1;
1297: }
1298:
1299: memset(&srv->srv_blob, 0, sizeof srv->srv_blob);
1300: if (access(diskDir, R_OK | W_OK) == -1) {
1301: LOGERR;
1302: return -1;
1303: } else
1304: AIT_SET_STR(&srv->srv_blob.dir, diskDir);
1305:
1306: /* init blob list */
1307: TAILQ_INIT(&srv->srv_blob.blobs);
1308:
1309: srv->srv_blob.server.cli_parent = srv;
1310:
1311: memcpy(&srv->srv_blob.server.cli_sa, &srv->srv_server.cli_sa, sizeof srv->srv_blob.server.cli_sa);
1312: switch (srv->srv_blob.server.cli_sa.sa.sa_family) {
1313: case AF_INET:
1314: srv->srv_blob.server.cli_sa.sin.sin_port =
1315: htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin.sin_port) + 1);
1316: salen = sizeof srv->srv_blob.server.cli_sa.sin;
1317: break;
1318: case AF_INET6:
1319: srv->srv_blob.server.cli_sa.sin6.sin6_port =
1320: htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin6.sin6_port) + 1);
1321: salen = sizeof srv->srv_blob.server.cli_sa.sin6;
1322: break;
1323: case AF_LOCAL:
1324: strlcat(srv->srv_blob.server.cli_sa.sun.sun_path, ".blob",
1325: sizeof srv->srv_blob.server.cli_sa.sun.sun_path);
1326: salen = sizeof srv->srv_blob.server.cli_sa.sun;
1327: break;
1328: default:
1329: AIT_FREE_VAL(&srv->srv_blob.dir);
1330: return -1;
1331: }
1332:
1333: /* create BLOB server socket */
1334: srv->srv_blob.server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, SOCK_STREAM, 0);
1335: if (srv->srv_blob.server.cli_sock == -1) {
1336: LOGERR;
1337: AIT_FREE_VAL(&srv->srv_blob.dir);
1338: return -1;
1339: }
1340: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
1341: LOGERR;
1342: close(srv->srv_blob.server.cli_sock);
1343: AIT_FREE_VAL(&srv->srv_blob.dir);
1344: return -1;
1345: }
1346: n = srv->srv_netbuf;
1347: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
1348: LOGERR;
1349: close(srv->srv_blob.server.cli_sock);
1350: AIT_FREE_VAL(&srv->srv_blob.dir);
1351: return -1;
1352: }
1353: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
1354: LOGERR;
1355: close(srv->srv_blob.server.cli_sock);
1356: AIT_FREE_VAL(&srv->srv_blob.dir);
1357: return -1;
1358: }
1359: if (bind(srv->srv_blob.server.cli_sock, &srv->srv_blob.server.cli_sa.sa, salen) == -1) {
1360: LOGERR;
1361: close(srv->srv_blob.server.cli_sock);
1362: AIT_FREE_VAL(&srv->srv_blob.dir);
1363: return -1;
1364: } else
1365: fcntl(srv->srv_blob.server.cli_sock, F_SETFL,
1366: fcntl(srv->srv_blob.server.cli_sock, F_GETFL) | O_NONBLOCK);
1367:
1368:
1369: /* allocate pool for concurent blob clients */
1370: srv->srv_blob.clients = array_Init(array_Size(srv->srv_clients));
1371: if (!srv->srv_blob.clients) {
1372: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1373: close(srv->srv_blob.server.cli_sock);
1374: AIT_FREE_VAL(&srv->srv_blob.dir);
1375: return -1;
1376: }
1377:
1378: /* init blob scheduler */
1379: srv->srv_blob.root = schedBegin();
1380: if (!srv->srv_blob.root) {
1381: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1382: array_Destroy(&srv->srv_blob.clients);
1383: close(srv->srv_blob.server.cli_sock);
1384: AIT_FREE_VAL(&srv->srv_blob.dir);
1385: return -1;
1386: }
1387:
1388: return 0;
1389: }
1390:
1391: /*
1392: * rpc_srv_endBLOBServer() - Destroy BLOB server, close all opened sockets and free resources
1393: *
1394: * @srv = RPC Server instance
1395: * return: none
1396: */
1397: void
1398: rpc_srv_endBLOBServer(rpc_srv_t * __restrict srv)
1399: {
1400: if (!srv)
1401: return;
1402:
1403: srv->srv_blob.kill = 1;
1404:
1405: if (srv->srv_blob.server.cli_sa.sa.sa_family == AF_LOCAL)
1406: unlink(srv->srv_blob.server.cli_sa.sun.sun_path);
1407:
1408: schedEnd(&srv->srv_blob.root);
1409: }
1410:
1411: /*
1412: * rpc_srv_loopBLOBServer() - Execute Main BLOB server loop and wait for clients requests
1413: *
1414: * @srv = RPC Server instance
1415: * return: -1 error or 0 ok, infinite loop ...
1416: */
1417: int
1418: rpc_srv_loopBLOBServer(rpc_srv_t * __restrict srv)
1419: {
1420: rpc_cli_t *c;
1421: register int i;
1422: rpc_blob_t *b, *tmp;
1423: struct timespec ts = { RPC_SCHED_POLLING, 0 };
1424:
1425: if (!srv || srv->srv_kill) {
1426: rpc_SetErr(EINVAL, "Invalid parameter can`t start BLOB server");
1427: return -1;
1428: }
1429:
1430: if (listen(srv->srv_blob.server.cli_sock, array_Size(srv->srv_blob.clients)) == -1) {
1431: LOGERR;
1432: return -1;
1433: }
1434:
1435: if (!schedSignal(srv->srv_blob.root, flushBLOB, srv, SIGFBLOB, NULL, 0)) {
1436: /* disabled kqueue support in libaitsched */
1437: struct sigaction sa;
1438:
1439: #ifdef atomic_store_rel_ptr
1440: atomic_store_rel_ptr(&_glSigArg, (uintptr_t) srv);
1441: #else
1442: *((volatile uintptr_t*) &_glSigArg) = (uintptr_t) srv;
1443: #endif
1444:
1445: memset(&sa, 0, sizeof sa);
1446: sigemptyset(&sa.sa_mask);
1447: sa.sa_handler = (void (*)(int)) flushBLOB;
1448: sa.sa_flags = SA_RESTART | SA_RESETHAND;
1449: sigaction(SIGFBLOB, &sa, NULL);
1450: }
1451:
1452: if (!schedRead(srv->srv_blob.root, acceptBLOBClients, srv,
1453: srv->srv_blob.server.cli_sock, NULL, 0)) {
1454: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1455: return -1;
1456: }
1457:
1458: schedPolling(srv->srv_blob.root, &ts, NULL);
1459: /* main rpc loop */
1460: schedRun(srv->srv_blob.root, &srv->srv_blob.kill);
1461:
1462: /* detach blobs */
1463: TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) {
1464: TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node);
1465:
1466: rpc_srv_blobFree(srv, b);
1467: e_free(b);
1468: }
1469:
1470: /* close all clients connections & server socket */
1471: for (i = 0; i < array_Size(srv->srv_blob.clients); i++) {
1472: c = array(srv->srv_blob.clients, i, rpc_cli_t*);
1473: if (c) {
1474: shutdown(c->cli_sock, SHUT_RDWR);
1475: close(c->cli_sock);
1476:
1477: schedCancelby(srv->srv_blob.root, taskMAX, CRITERIA_ARG, c, NULL);
1478: AIT_FREE_VAL(&c->cli_buf);
1479: }
1480: array_Del(srv->srv_blob.clients, i, 42);
1481: }
1482: array_Destroy(&srv->srv_blob.clients);
1483:
1484: close(srv->srv_blob.server.cli_sock);
1485:
1486: AIT_FREE_VAL(&srv->srv_blob.dir);
1487: return 0;
1488: }
1489:
1490:
1491: /*
1492: * rpc_srv_initServer() - Init & create RPC Server
1493: *
1494: * @InstID = Instance for authentication & recognition
1495: * @concurentClients = Concurent clients at same time to this server
1496: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
1497: * @csHost = Host name or address for bind server, if NULL any address
1498: * @Port = Port for bind server, if Port == 0 default port is selected
1499: * @proto = Protocol, if == 0 choose SOCK_STREAM
1500: * return: NULL == error or !=NULL bind and created RPC server instance
1501: */
1502: rpc_srv_t *
1503: rpc_srv_initServer(u_char InstID, int concurentClients, int netBuf,
1504: const char *csHost, u_short Port, int proto)
1505: {
1506: int n = 1;
1507: rpc_srv_t *srv = NULL;
1508: sockaddr_t sa = E_SOCKADDR_INIT;
1509: socklen_t salen;
1510:
1511: if (!concurentClients || (proto < 0 || proto > SOCK_RAW)) {
1512: rpc_SetErr(EINVAL, "Invalid parameters can`t init RPC server");
1513: return NULL;
1514: }
1515: if (!Port && proto < SOCK_RAW)
1516: Port = RPC_DEFPORT;
1517: if (!(salen = e_gethostbyname(csHost, Port, &sa)))
1518: return NULL;
1519: if (!proto)
1520: proto = SOCK_STREAM;
1521: if (netBuf < RPC_MIN_BUFSIZ)
1522: netBuf = BUFSIZ;
1523: else
1524: netBuf = E_ALIGN(netBuf, 2); /* align netBuf length */
1525:
1526: #ifdef HAVE_SRANDOMDEV
1527: srandomdev();
1528: #else
1529: time_t tim;
1530:
1531: srandom((time(&tim) ^ getpid()));
1532: #endif
1533:
1534: srv = e_malloc(sizeof(rpc_srv_t));
1535: if (!srv) {
1536: LOGERR;
1537: return NULL;
1538: } else
1539: memset(srv, 0, sizeof(rpc_srv_t));
1540:
1541: srv->srv_proto = proto;
1542: srv->srv_netbuf = netBuf;
1543: srv->srv_session.sess_version = RPC_VERSION;
1544: srv->srv_session.sess_instance = InstID;
1545:
1546: srv->srv_server.cli_parent = srv;
1547: memcpy(&srv->srv_server.cli_sa, &sa, sizeof srv->srv_server.cli_sa);
1548:
1549: /* init functions */
1550: pthread_mutex_init(&srv->srv_funcs.mtx, NULL);
1551: SLIST_INIT(&srv->srv_funcs);
1552: AVL_INIT(&srv->srv_funcs);
1553:
1554: /* init scheduler */
1555: srv->srv_root = schedBegin();
1556: if (!srv->srv_root) {
1557: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1558: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1559: e_free(srv);
1560: return NULL;
1561: }
1562:
1563: /* init pool for clients */
1564: srv->srv_clients = array_Init(concurentClients);
1565: if (!srv->srv_clients) {
1566: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1567: schedEnd(&srv->srv_root);
1568: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1569: e_free(srv);
1570: return NULL;
1571: }
1572:
1573: /* create server socket */
1574: srv->srv_server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family,
1575: srv->srv_proto, srv->srv_proto == SOCK_RAW ? IPPROTO_ERPC : 0);
1576: if (srv->srv_server.cli_sock == -1) {
1577: LOGERR;
1578: array_Destroy(&srv->srv_clients);
1579: schedEnd(&srv->srv_root);
1580: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1581: e_free(srv);
1582: return NULL;
1583: }
1584: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
1585: LOGERR;
1586: goto err;
1587: }
1588: if (srv->srv_proto == SOCK_STREAM)
1589: setsockopt(srv->srv_server.cli_sock, IPPROTO_TCP, TCP_NODELAY, &n, sizeof n);
1590: n = srv->srv_netbuf;
1591: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
1592: LOGERR;
1593: goto err;
1594: }
1595: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
1596: LOGERR;
1597: goto err;
1598: }
1599: if (bind(srv->srv_server.cli_sock, &srv->srv_server.cli_sa.sa, salen) == -1) {
1600: LOGERR;
1601: goto err;
1602: } else
1603: fcntl(srv->srv_server.cli_sock, F_SETFL,
1604: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
1605:
1606: rpc_register_srvPing(srv);
1607:
1608: return srv;
1609: err: /* error condition */
1610: close(srv->srv_server.cli_sock);
1611: array_Destroy(&srv->srv_clients);
1612: schedEnd(&srv->srv_root);
1613: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1614: e_free(srv);
1615: return NULL;
1616: }
1617:
1618: /*
1619: * rpc_srv_endServer() - Destroy RPC server, close all opened sockets and free resources
1620: *
1621: * @psrv = RPC Server instance
1622: * return: none
1623: */
1624: void
1625: rpc_srv_endServer(rpc_srv_t ** __restrict psrv)
1626: {
1627: if (!psrv || !*psrv)
1628: return;
1629:
1630: /* if send kill to blob server */
1631: rpc_srv_endBLOBServer(*psrv);
1632: /* wait for BLOB server done */
1633: while (*(&(*psrv)->srv_blob.root))
1634: usleep(1000);
1635:
1636: (*psrv)->srv_kill = 1;
1637: sleep(RPC_SCHED_POLLING);
1638:
1639: if ((*psrv)->srv_server.cli_sa.sa.sa_family == AF_LOCAL)
1640: unlink((*psrv)->srv_server.cli_sa.sun.sun_path);
1641:
1642: schedEnd(&(*psrv)->srv_root);
1643:
1644: pthread_mutex_destroy(&(*psrv)->srv_funcs.mtx);
1645: e_free(*psrv);
1646: *psrv = NULL;
1647: }
1648:
1649: /*
1650: * rpc_srv_loopServer() - Execute Main server loop and wait for clients requests
1651: *
1652: * @srv = RPC Server instance
1653: * return: -1 error or 0 ok, infinite loop ...
1654: */
1655: int
1656: rpc_srv_loopServer(rpc_srv_t * __restrict srv)
1657: {
1658: rpc_cli_t *c;
1659: register int i;
1660: rpc_func_t *f;
1661: struct timespec ts = { RPC_SCHED_POLLING, 0 };
1662:
1663: if (!srv) {
1664: rpc_SetErr(EINVAL, "Invalid parameter can`t start RPC server");
1665: return -1;
1666: }
1667:
1668: if (srv->srv_proto == SOCK_STREAM)
1669: if (listen(srv->srv_server.cli_sock, array_Size(srv->srv_clients)) == -1) {
1670: LOGERR;
1671: return -1;
1672: }
1673:
1674: if (!schedRead(srv->srv_root, cbProto[srv->srv_proto][CB_ACCEPTCLIENT], srv,
1675: srv->srv_server.cli_sock, NULL, 0)) {
1676: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1677: return -1;
1678: }
1679:
1680: schedPolling(srv->srv_root, &ts, NULL);
1681: /* main rpc loop */
1682: schedRun(srv->srv_root, &srv->srv_kill);
1683:
1684: /* close all clients connections & server socket */
1685: for (i = 0; i < array_Size(srv->srv_clients); i++) {
1686: c = array(srv->srv_clients, i, rpc_cli_t*);
1687: if (c) {
1688: if (srv->srv_proto == SOCK_STREAM) {
1689: shutdown(c->cli_sock, SHUT_RDWR);
1690: close(c->cli_sock);
1691: }
1692:
1693: schedCancelby(srv->srv_root, taskMAX, CRITERIA_ARG, c, NULL);
1694: ait_freeVars(&RPC_RETVARS(c));
1695: AIT_FREE_VAL(&c->cli_buf);
1696: }
1697: array_Del(srv->srv_clients, i, 42);
1698: }
1699: array_Destroy(&srv->srv_clients);
1700:
1701: if (srv->srv_proto != SOCK_EXT)
1702: close(srv->srv_server.cli_sock);
1703:
1704: /* detach exported calls */
1705: RPC_FUNCS_LOCK(&srv->srv_funcs);
1706: while ((f = SLIST_FIRST(&srv->srv_funcs))) {
1707: SLIST_REMOVE_HEAD(&srv->srv_funcs, func_next);
1708:
1709: AIT_FREE_VAL(&f->func_name);
1710: e_free(f);
1711: }
1712: srv->srv_funcs.avlh_root = NULL;
1713: RPC_FUNCS_UNLOCK(&srv->srv_funcs);
1714:
1715: return 0;
1716: }
1717:
1718:
1719: /*
1720: * rpc_srv_execCall() Execute registered call from RPC server
1721: *
1722: * @cli = RPC client
1723: * @rpc = IN RPC call structure
1724: * @funcname = Execute RPC function
1725: * @args = IN RPC calling arguments from RPC client
1726: * return: -1 error, !=-1 ok
1727: */
1728: int
1729: rpc_srv_execCall(rpc_cli_t * __restrict cli, struct tagRPCCall * __restrict rpc,
1730: ait_val_t funcname, array_t * __restrict args)
1731: {
1732: rpc_callback_t func;
1733:
1734: if (!cli || !rpc || !AIT_ADDR(&funcname)) {
1735: rpc_SetErr(EINVAL, "Invalid parameter can`t exec function");
1736: return -1;
1737: }
1738:
1739: func = AIT_GET_LIKE(&funcname, rpc_callback_t);
1740: return func(cli, rpc, args);
1741: }
1742:
1743:
1744: /*
1745: * rpc_srv_initServer2() - Init & create layer2 RPC Server
1746: *
1747: * @InstID = Instance for authentication & recognition
1748: * @concurentClients = Concurent clients at same time to this server
1749: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
1750: * @csIface = Interface name for bind server, if NULL first interface on host
1751: * return: NULL == error or !=NULL bind and created RPC server instance
1752: */
1753: rpc_srv_t *
1754: rpc_srv_initServer2(u_char InstID, int concurentClients, int netBuf, const char *csIface)
1755: {
1756: #ifndef __linux__
1757: int n = 1;
1758: rpc_srv_t *srv = NULL;
1759: sockaddr_t sa = E_SOCKADDR_INIT;
1760: char szIface[64], szStr[STRSIZ];
1761: register int i;
1762: struct ifreq ifr;
1763: struct bpf_insn insns[] = {
1764: BPF_STMT(BPF_LD + BPF_H + BPF_ABS, 12),
1765: BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, RPC_DEFPORT, 0, 1),
1766: BPF_STMT(BPF_RET + BPF_K, -1),
1767: BPF_STMT(BPF_RET + BPF_K, 0),
1768: };
1769: struct bpf_program fcode = {
1770: .bf_len = sizeof(insns) / sizeof(struct bpf_insn),
1771: .bf_insns = insns
1772: };
1773:
1774: if (!concurentClients) {
1775: rpc_SetErr(EINVAL, "Invalid parameters can`t init RPC server");
1776: return NULL;
1777: }
1778: if (!csIface) {
1779: if (e_get1stiface(szIface, sizeof szIface))
1780: return NULL;
1781: } else
1782: strlcpy(szIface, csIface, sizeof szIface);
1783: if (!e_getifacebyname(szIface, &sa))
1784: return NULL;
1785:
1786: #ifdef HAVE_SRANDOMDEV
1787: srandomdev();
1788: #else
1789: time_t tim;
1790:
1791: srandom((time(&tim) ^ getpid()));
1792: #endif
1793:
1794: srv = e_malloc(sizeof(rpc_srv_t));
1795: if (!srv) {
1796: LOGERR;
1797: return NULL;
1798: } else
1799: memset(srv, 0, sizeof(rpc_srv_t));
1800:
1801: srv->srv_proto = SOCK_BPF;
1802: srv->srv_netbuf = netBuf;
1803: srv->srv_session.sess_version = RPC_VERSION;
1804: srv->srv_session.sess_instance = InstID;
1805:
1806: srv->srv_server.cli_parent = srv;
1807: memcpy(&srv->srv_server.cli_sa, &sa, sizeof srv->srv_server.cli_sa);
1808:
1809: /* init functions */
1810: pthread_mutex_init(&srv->srv_funcs.mtx, NULL);
1811: SLIST_INIT(&srv->srv_funcs);
1812: AVL_INIT(&srv->srv_funcs);
1813:
1814: /* init scheduler */
1815: srv->srv_root = schedBegin();
1816: if (!srv->srv_root) {
1817: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1818: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1819: e_free(srv);
1820: return NULL;
1821: }
1822:
1823: /* init pool for clients */
1824: srv->srv_clients = array_Init(concurentClients);
1825: if (!srv->srv_clients) {
1826: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1827: schedEnd(&srv->srv_root);
1828: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1829: e_free(srv);
1830: return NULL;
1831: }
1832:
1833: /* create server handler */
1834: for (i = 0; i < 10; i++) {
1835: memset(szStr, 0, sizeof szStr);
1836: snprintf(szStr, sizeof szStr, "/dev/bpf%d", i);
1837: srv->srv_server.cli_sock = open(szStr, O_RDWR);
1838: if (srv->srv_server.cli_sock > STDERR_FILENO)
1839: break;
1840: }
1841: if (srv->srv_server.cli_sock < 3) {
1842: LOGERR;
1843: array_Destroy(&srv->srv_clients);
1844: schedEnd(&srv->srv_root);
1845: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1846: e_free(srv);
1847: return NULL;
1848: }
1849:
1850: if (ioctl(srv->srv_server.cli_sock, BIOCIMMEDIATE, &n) == -1) {
1851: LOGERR;
1852: goto err;
1853: }
1854: if (ioctl(srv->srv_server.cli_sock, BIOCSETF, &fcode) == -1) {
1855: LOGERR;
1856: goto err;
1857: }
1858: n = (netBuf < RPC_MIN_BUFSIZ) ? getpagesize() : E_ALIGN(netBuf, 2);
1859: if (ioctl(srv->srv_server.cli_sock, BIOCSBLEN, &n) == -1) {
1860: LOGERR;
1861: goto err;
1862: } else
1863: srv->srv_netbuf = n;
1864:
1865: memset(&ifr, 0, sizeof ifr);
1866: strlcpy(ifr.ifr_name, szIface, sizeof ifr.ifr_name);
1867: if (ioctl(srv->srv_server.cli_sock, BIOCSETIF, &ifr) == -1) {
1868: LOGERR;
1869: goto err;
1870: } else
1871: fcntl(srv->srv_server.cli_sock, F_SETFL,
1872: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
1873:
1874: rpc_register_srvPing(srv);
1875:
1876: return srv;
1877: err: /* error condition */
1878: close(srv->srv_server.cli_sock);
1879: array_Destroy(&srv->srv_clients);
1880: schedEnd(&srv->srv_root);
1881: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1882: e_free(srv);
1883: #else
1884: rpc_SetErr(ENOTSUP, "Feature isn't supported on Linux!");
1885: #endif
1886:
1887: return NULL;
1888: }
1889:
1890: /*
1891: * rpc_srv_initServerExt() - Init & create pipe RPC Server
1892: *
1893: * @InstID = Instance for authentication & recognition
1894: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
1895: * @fd = File descriptor
1896: * return: NULL == error or !=NULL bind and created RPC server instance
1897: */
1898: rpc_srv_t *
1899: rpc_srv_initServerExt(u_char InstID, int netBuf, int fd)
1900: {
1901: rpc_srv_t *srv = NULL;
1902:
1903: #ifdef HAVE_SRANDOMDEV
1904: srandomdev();
1905: #else
1906: time_t tim;
1907:
1908: srandom((time(&tim) ^ getpid()));
1909: #endif
1910:
1911: srv = e_malloc(sizeof(rpc_srv_t));
1912: if (!srv) {
1913: LOGERR;
1914: return NULL;
1915: } else
1916: memset(srv, 0, sizeof(rpc_srv_t));
1917:
1918: srv->srv_proto = SOCK_EXT;
1919: srv->srv_netbuf = (netBuf < RPC_MIN_BUFSIZ) ?
1920: getpagesize() : E_ALIGN(netBuf, 2);
1921: srv->srv_session.sess_version = RPC_VERSION;
1922: srv->srv_session.sess_instance = InstID;
1923:
1924: srv->srv_server.cli_parent = srv;
1925: srv->srv_server.cli_sock = fd;
1926:
1927: /* init functions */
1928: pthread_mutex_init(&srv->srv_funcs.mtx, NULL);
1929: SLIST_INIT(&srv->srv_funcs);
1930: AVL_INIT(&srv->srv_funcs);
1931:
1932: /* init scheduler */
1933: srv->srv_root = schedBegin();
1934: if (!srv->srv_root) {
1935: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1936: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1937: e_free(srv);
1938: return NULL;
1939: }
1940:
1941: /* init pool for clients */
1942: srv->srv_clients = array_Init(1);
1943: if (!srv->srv_clients) {
1944: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1945: schedEnd(&srv->srv_root);
1946: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1947: e_free(srv);
1948: return NULL;
1949: }
1950:
1951: fcntl(srv->srv_server.cli_sock, F_SETFL,
1952: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
1953:
1954: rpc_register_srvPing(srv);
1955:
1956: return srv;
1957: }
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