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 1.30.2.8 2024/02/26 17:52:41 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 - 2024
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: if (s->srv_proto == SOCK_STREAM)
91: schedCancelby(s->srv_root, taskMAX, CRITERIA_ARG, c, NULL);
92:
93: /* free buffer */
94: AIT_FREE_VAL(&c->cli_buf);
95:
96: array_Del(s->srv_clients, c->cli_id, 0);
97: if (c)
98: e_free(c);
99: }
100:
101:
102: static inline int
103: _check4freeslot(rpc_srv_t * __restrict srv, sockaddr_t * __restrict sa)
104: {
105: rpc_cli_t *c = NULL;
106: register int i;
107:
108: /* check free slots for connect */
109: for (i = 0; i < array_Size(srv->srv_clients) &&
110: (c = array(srv->srv_clients, i, rpc_cli_t*)); i++)
111: /* check for duplicates */
112: if (sa && !e_addrcmp(&c->cli_sa, sa, 42))
113: break;
114: if (i >= array_Size(srv->srv_clients))
115: return -1; /* no more free slots! */
116:
117: return i;
118: }
119:
120: static rpc_cli_t *
121: _allocClient(rpc_srv_t * __restrict srv, sockaddr_t * __restrict sa)
122: {
123: rpc_cli_t *c = NULL;
124: int n;
125:
126: if (srv->srv_proto != SOCK_EXT)
127: n = _check4freeslot(srv, sa);
128: else
129: n = 0;
130: if (n == -1)
131: return NULL;
132: else
133: c = array(srv->srv_clients, n, rpc_cli_t*);
134:
135: if (!c) {
136: c = e_malloc(sizeof(rpc_cli_t));
137: if (!c) {
138: LOGERR;
139: srv->srv_kill = 1;
140: return NULL;
141: } else {
142: memset(c, 0, sizeof(rpc_cli_t));
143: array_Set(srv->srv_clients, n, c);
144: c->cli_id = n;
145: c->cli_parent = srv;
146: }
147:
148: /* alloc empty buffer */
149: AIT_SET_BUFSIZ(&c->cli_buf, 0, srv->srv_netbuf);
150: }
151:
152: return c;
153: }
154:
155:
156: static void *
157: freeClient(sched_task_t *task)
158: {
159: rpc_freeCli(TASK_ARG(task));
160:
161: taskExit(task, NULL);
162: }
163:
164: static void *
165: closeClient(sched_task_t *task)
166: {
167: int sock = ((rpc_cli_t*) TASK_ARG(task))->cli_sock;
168:
169: rpc_freeCli(TASK_ARG(task));
170:
171: /* close client socket */
172: shutdown(sock, SHUT_RDWR);
173: close(sock);
174: taskExit(task, NULL);
175: }
176:
177: static void *
178: txPacket(sched_task_t *task)
179: {
180: rpc_cli_t *c = TASK_ARG(task);
181: rpc_srv_t *s = c->cli_parent;
182: rpc_func_t *f = NULL;
183: u_char *buf = AIT_GET_BUF(&c->cli_buf);
184: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
185: int ret, wlen = sizeof(struct tagRPCCall);
186: #ifdef TCP_SESSION_TIMEOUT
187: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
188:
189: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
190: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
191: TASK_ARG(task), ts, TASK_ARG(task), 0);
192: #endif
193:
194: if (rpc->call_argc) {
195: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
196: if (!f) {
197: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
198:
199: rpc->call_argc ^= rpc->call_argc;
200: RPC_SET_RETURN(rpc, -1);
201: RPC_SET_ERRNO(rpc, rpc_Errno);
202: } else if (rpc_pktFreeSpace(c) > s->srv_netbuf) {
203: rpc_SetErr(EMSGSIZE, "Message too long");
204:
205: rpc->call_argc ^= rpc->call_argc;
206: RPC_SET_RETURN(rpc, -1);
207: RPC_SET_ERRNO(rpc, rpc_Errno);
208: } else {
209: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
210: /* Go Encapsulate variables */
211: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
212: RPC_RETVARS(c));
213: if (ret == -1) {
214: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
215:
216: rpc->call_argc ^= rpc->call_argc;
217: RPC_SET_RETURN(rpc, -1);
218: RPC_SET_ERRNO(rpc, rpc_Errno);
219: } else
220: wlen += ret;
221: }
222: }
223:
224: /* Free return values */
225: ait_freeVars(&c->cli_vars);
226:
227: rpc->call_len = htonl(wlen);
228: rpc->call_io = RPC_ACK;
229:
230: #if 0
231: /* calculate CRC */
232: rpc->call_crc ^= rpc->call_crc;
233: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
234: #endif
235:
236: /* send reply */
237: ret = send(TASK_FD(task), buf, wlen, MSG_NOSIGNAL);
238: if (ret == -1) {
239: /* close connection */
240: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
241: TASK_ARG(task), 0, NULL, 0);
242: }
243:
244: taskExit(task, NULL);
245: }
246:
247: static void *
248: execCall(sched_task_t *task)
249: {
250: rpc_cli_t *c = TASK_ARG(task);
251: rpc_srv_t *s = c->cli_parent;
252: rpc_func_t *f = NULL;
253: array_t *arr = NULL;
254: u_char *buf = AIT_GET_BUF(&c->cli_buf);
255: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
256: int argc = rpc->call_argc;
257:
258: /* Go decapsulate variables ... */
259: if (argc) {
260: arr = ait_buffer2vars(buf + sizeof(struct tagRPCCall),
261: AIT_LEN(&c->cli_buf) - sizeof(struct tagRPCCall), argc, 42);
262: if (!arr) {
263: rpc_SetErr(ERPCMISMATCH, "#%d - %s", elwix_GetErrno(), elwix_GetError());
264:
265: rpc->call_argc ^= rpc->call_argc;
266: RPC_SET_RETURN(rpc, -1);
267: RPC_SET_ERRNO(rpc, rpc_Errno);
268: taskExit(task, NULL);
269: }
270: } else
271: arr = NULL;
272:
273: if (!(f = rpc_srv_getCall(s, ntohs(rpc->call_tag)))) {
274: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
275:
276: rpc->call_argc ^= rpc->call_argc;
277: RPC_SET_RETURN(rpc, -1);
278: RPC_SET_ERRNO(rpc, rpc_Errno);
279: } else {
280: /* if client doesn't want reply */
281: RPC_SET_RETURN(rpc, rpc_srv_execCall(c, rpc, f->func_name, arr));
282: if (rpc->call_rep.ret == htonl(-1)) {
283: if (!rpc->call_rep.eno) {
284: LOGERR;
285: RPC_SET_ERRNO(rpc, rpc_Errno);
286: }
287: rpc->call_argc ^= rpc->call_argc;
288: ait_freeVars(&c->cli_vars);
289: } else {
290: rpc->call_rep.eno ^= rpc->call_rep.eno;
291: rpc->call_argc ^= rpc->call_argc;
292: if (TASK_VAL(task)) {
293: /* without reply */
294: ait_freeVars(&c->cli_vars);
295: } else if (rpc->call_io & RPC_REQ) {
296: /* reply */
297: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
298: }
299: }
300: }
301:
302: array_Destroy(&arr);
303: taskExit(task, NULL);
304: }
305:
306: int
307: rpc_srv_Return(sched_root_task_t *root, rpc_cli_t *c)
308: {
309: rpc_srv_t *s = c->cli_parent;
310: u_char *buf = AIT_GET_BUF(&c->cli_buf);
311: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
312:
313: if (!RPC_CHK_NOREPLY(rpc)) {
314: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
315: schedWrite(root, cbProto[s->srv_proto][CB_TXPACKET], c, c->cli_sock, rpc, 0);
316: }
317:
318: return rpc->call_argc;
319: }
320:
321: static void *
322: rxPacket(sched_task_t *task)
323: {
324: rpc_cli_t *c = TASK_ARG(task);
325: rpc_srv_t *s = c->cli_parent;
326: int len, noreply = 0, rlen = AIT_LEN(&c->cli_buf);
327: #if 0
328: u_short crc;
329: #endif
330: u_char *buf = AIT_GET_BUF(&c->cli_buf);
331: struct tagRPCCall b, *rpc = (struct tagRPCCall*) buf;
332: #ifdef TCP_SESSION_TIMEOUT
333: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
334:
335: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
336: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
337: TASK_ARG(task), ts, TASK_ARG(task), 0);
338: #endif
339:
340: /* prepare rx */
341: len = recv(TASK_FD(task), &b, sizeof b, MSG_PEEK);
342: if (len < 1) {
343: /* close connection */
344: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
345: TASK_ARG(task), 0, NULL, 0);
346: taskExit(task, NULL);
347: } else if (len == sizeof b)
348: rlen = ntohl(b.call_len);
349: else
350: goto end;
351:
352: rlen = recv(TASK_FD(task), buf, rlen, 0);
353: if (rlen == -1) {
354: /* close connection */
355: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
356: TASK_ARG(task), 0, NULL, 0);
357: taskExit(task, NULL);
358: }
359: if (rlen < sizeof(struct tagRPCCall)) {
360: rpc_SetErr(ERPCMISMATCH, "Short RPC packet");
361:
362: rpc->call_argc ^= rpc->call_argc;
363: RPC_SET_RETURN(rpc, -1);
364: RPC_SET_ERRNO(rpc, rpc_Errno);
365: goto err;
366: } else
367: len = ntohl(rpc->call_len);
368: if (rlen < len || len > AIT_LEN(&c->cli_buf)) {
369: rpc_SetErr(ERPCMISMATCH, "Short RPC packet");
370:
371: rpc->call_argc ^= rpc->call_argc;
372: RPC_SET_RETURN(rpc, -1);
373: RPC_SET_ERRNO(rpc, rpc_Errno);
374: goto err;
375: }
376:
377: /* skip loop packet */
378: if (rpc->call_io & RPC_ACK) {
379: schedReadSelf(task);
380: taskExit(task, NULL);
381: }
382:
383: #if 0
384: /* check integrity of packet */
385: crc = ntohs(rpc->call_crc);
386: rpc->call_crc ^= rpc->call_crc;
387: if (crc != crcFletcher16((u_short*) rpc, len / 2)) {
388: rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet");
389:
390: rpc->call_argc ^= rpc->call_argc;
391: RPC_SET_RETURN(rpc, -1);
392: RPC_SET_ERRNO(rpc, rpc_Errno);
393: goto err;
394: }
395: #endif
396:
397: /* check RPC packet session info */
398: if (rpc_chkPktSession(&rpc->call_session, &s->srv_session)) {
399: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
400:
401: rpc->call_argc ^= rpc->call_argc;
402: RPC_SET_RETURN(rpc, -1);
403: RPC_SET_ERRNO(rpc, rpc_Errno);
404: goto err;
405: }
406:
407: noreply = RPC_CHK_NOREPLY(rpc);
408:
409: /* execute RPC call */
410: schedEvent(TASK_ROOT(task), execCall, TASK_ARG(task), (int) noreply, rpc, len);
411: err:
412: /* send RPC reply */
413: if (!noreply && (rpc->call_io & RPC_REQ))
414: schedWrite(TASK_ROOT(task), cbProto[s->srv_proto][CB_TXPACKET],
415: TASK_ARG(task), TASK_FD(task), rpc, len);
416: end:
417: /* lets get next packet */
418: schedReadSelf(task);
419: taskExit(task, NULL);
420: }
421:
422: static void *
423: acceptClients(sched_task_t *task)
424: {
425: rpc_srv_t *srv = TASK_ARG(task);
426: rpc_cli_t *c = NULL;
427: socklen_t salen = E_SOCKADDR_MAX;
428: int sock;
429: #ifdef TCP_SESSION_TIMEOUT
430: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
431: #endif
432:
433: c = _allocClient(srv, NULL);
434: if (!c) {
435: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
436: if ((sock = accept(TASK_FD(task), NULL, NULL)) != -1) {
437: shutdown(sock, SHUT_RDWR);
438: close(sock);
439: }
440: goto end;
441: }
442:
443: /* accept client */
444: c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen);
445: if (c->cli_sock == -1) {
446: LOGERR;
447: AIT_FREE_VAL(&c->cli_buf);
448: array_Del(srv->srv_clients, c->cli_id, 42);
449: goto end;
450: } else {
451: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
452: fcntl(c->cli_sock, F_SETFD, FD_CLOEXEC);
453: }
454:
455: #ifdef TCP_SESSION_TIMEOUT
456: /* armed timer for close stateless connection */
457: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
458: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT], c,
459: ts, c, 0);
460: #endif
461: schedRead(TASK_ROOT(task), cbProto[srv->srv_proto][CB_RXPACKET], c,
462: c->cli_sock, NULL, 0);
463: end:
464: schedReadSelf(task);
465: taskExit(task, NULL);
466: }
467:
468:
469: static void *
470: txUDPPacket(sched_task_t *task)
471: {
472: rpc_cli_t *c = TASK_ARG(task);
473: rpc_srv_t *s = c->cli_parent;
474: rpc_func_t *f = NULL;
475: u_char *buf = AIT_GET_BUF(&c->cli_buf);
476: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
477: int ret, wlen = sizeof(struct tagRPCCall);
478: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
479:
480: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
481: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
482: TASK_ARG(task), ts, TASK_ARG(task), 0);
483:
484: if (rpc->call_argc) {
485: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
486: if (!f) {
487: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
488:
489: rpc->call_argc ^= rpc->call_argc;
490: RPC_SET_RETURN(rpc, -1);
491: RPC_SET_ERRNO(rpc, rpc_Errno);
492: } else if (rpc_pktFreeSpace(c) > s->srv_netbuf) {
493: rpc_SetErr(EMSGSIZE, "Message too long");
494:
495: rpc->call_argc ^= rpc->call_argc;
496: RPC_SET_RETURN(rpc, -1);
497: RPC_SET_ERRNO(rpc, rpc_Errno);
498: } else {
499: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
500: /* Go Encapsulate variables */
501: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
502: RPC_RETVARS(c));
503: if (ret == -1) {
504: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
505:
506: rpc->call_argc ^= rpc->call_argc;
507: RPC_SET_RETURN(rpc, -1);
508: RPC_SET_ERRNO(rpc, rpc_Errno);
509: } else
510: wlen += ret;
511: }
512: }
513:
514: /* Free return values */
515: ait_freeVars(&c->cli_vars);
516:
517: rpc->call_len = htonl(wlen);
518: rpc->call_io = RPC_ACK;
519:
520: /* calculate CRC */
521: rpc->call_crc ^= rpc->call_crc;
522: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
523:
524: /* send reply */
525: ret = sendto(TASK_FD(task), buf, wlen, MSG_NOSIGNAL,
526: &c->cli_sa.sa, e_addrlen(&c->cli_sa));
527: if (ret == -1) {
528: /* close connection */
529: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
530: TASK_ARG(task), 0, NULL, 0);
531: }
532:
533: taskExit(task, NULL);
534: }
535:
536: static void *
537: rxUDPPacket(sched_task_t *task)
538: {
539: rpc_srv_t *srv = TASK_ARG(task);
540: rpc_cli_t *c = NULL;
541: int len, noreply = 0, rlen;
542: u_short crc;
543: struct tagRPCCall *rpc;
544: sockaddr_t sa;
545: socklen_t salen = E_SOCKADDR_MAX;
546: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
547: ait_val_t b = AIT_VAL_INIT;
548:
549: /* receive connect packet */
550: AIT_SET_BUF(&b, NULL, srv->srv_netbuf);
551: #ifndef __linux__
552: sa.ss.ss_len = salen;
553: #endif
554: rlen = recvfrom(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b), 0, &sa.sa, &salen);
555: rpc = (struct tagRPCCall*) AIT_GET_BUF(&b);
556: if (rlen < sizeof(struct tagRPCCall))
557: goto end;
558: else
559: len = ntohl(rpc->call_len);
560: if (rlen < len || len > srv->srv_netbuf)
561: goto end;
562:
563: /* skip loop packet */
564: if (rpc->call_io & RPC_ACK)
565: goto end;
566:
567: /* check integrity of packet */
568: crc = ntohs(rpc->call_crc);
569: rpc->call_crc ^= rpc->call_crc;
570: if (crc != crcFletcher16((u_short*) AIT_GET_BUF(&b), len / 2))
571: goto end;
572:
573: /* check RPC packet session info */
574: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session))
575: goto end;
576:
577: c = _allocClient(srv, &sa);
578: if (!c) {
579: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
580: usleep(2000); /* blocked client delay */
581: goto end;
582: } else {
583: memcpy(AIT_GET_BUF(&c->cli_buf), AIT_GET_BUF(&b), len);
584: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
585:
586: c->cli_sock = TASK_FD(task);
587: memcpy(&c->cli_sa, &sa, sizeof c->cli_sa);
588:
589: /* armed timer for close stateless connection */
590: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
591: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
592: c, ts, c, 0);
593: }
594:
595: noreply = RPC_CHK_NOREPLY(rpc);
596:
597: /* execute RPC call */
598: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
599:
600: /* send RPC reply */
601: if (!noreply && (rpc->call_io & RPC_REQ))
602: schedWrite(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
603: c, TASK_FD(task), rpc, len);
604: end:
605: AIT_FREE_VAL(&b);
606: schedReadSelf(task);
607: taskExit(task, NULL);
608: }
609:
610:
611: static void *
612: txRAWPacket(sched_task_t *task)
613: {
614: rpc_cli_t *c = TASK_ARG(task);
615: rpc_srv_t *s = c->cli_parent;
616: rpc_func_t *f = NULL;
617: u_char *buf = AIT_GET_BUF(&c->cli_buf);
618: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
619: int ret, wlen = sizeof(struct tagRPCCall);
620: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
621:
622: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
623: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
624: TASK_ARG(task), ts, TASK_ARG(task), 0);
625:
626: if (rpc->call_argc) {
627: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
628: if (!f) {
629: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
630:
631: rpc->call_argc ^= rpc->call_argc;
632: RPC_SET_RETURN(rpc, -1);
633: RPC_SET_ERRNO(rpc, rpc_Errno);
634: } else if (rpc_pktFreeSpace(c) > s->srv_netbuf) {
635: rpc_SetErr(EMSGSIZE, "Message too long");
636:
637: rpc->call_argc ^= rpc->call_argc;
638: RPC_SET_RETURN(rpc, -1);
639: RPC_SET_ERRNO(rpc, rpc_Errno);
640: } else {
641: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
642: /* Go Encapsulate variables */
643: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
644: RPC_RETVARS(c));
645: if (ret == -1) {
646: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
647:
648: rpc->call_argc ^= rpc->call_argc;
649: RPC_SET_RETURN(rpc, -1);
650: RPC_SET_ERRNO(rpc, rpc_Errno);
651: } else
652: wlen += ret;
653: }
654: }
655:
656: /* Free return values */
657: ait_freeVars(&c->cli_vars);
658:
659: rpc->call_len = htonl(wlen);
660: rpc->call_io = RPC_ACK;
661:
662: /* calculate CRC */
663: rpc->call_crc ^= rpc->call_crc;
664: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
665:
666: /* send reply */
667: ret = sendto(TASK_FD(task), buf, wlen, MSG_NOSIGNAL,
668: &c->cli_sa.sa, e_addrlen(&c->cli_sa));
669: if (ret == -1) {
670: /* close connection */
671: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
672: TASK_ARG(task), 0, NULL, 0);
673: }
674:
675: taskExit(task, NULL);
676: }
677:
678: static void *
679: rxRAWPacket(sched_task_t *task)
680: {
681: rpc_srv_t *srv = TASK_ARG(task);
682: rpc_cli_t *c = NULL;
683: int len, noreply = 0, rlen;
684: u_short crc;
685: struct tagRPCCall *rpc;
686: sockaddr_t sa;
687: socklen_t salen = E_SOCKADDR_MAX;
688: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
689: ait_val_t b = AIT_VAL_INIT;
690:
691: /* receive connect packet */
692: AIT_SET_BUF(&b, NULL, srv->srv_netbuf);
693: #ifndef __linux__
694: sa.ss.ss_len = salen;
695: #endif
696: rlen = recvfrom(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b), 0, &sa.sa, &salen);
697: if (sa.sa.sa_family == AF_INET) {
698: struct ip *h;
699: h = (struct ip*) AIT_GET_BUF(&b);
700: if (rlen < ntohs(h->ip_len) || h->ip_p != IPPROTO_ERPC)
701: goto end;
702: else {
703: rlen -= sizeof(struct ip);
704: rpc = (struct tagRPCCall*) (h + 1);
705: }
706: } else {
707: #ifdef IPV6_REMOVE_HEADER
708: struct ip6_hdr *h;
709: h = (struct ip6_hdr*) AIT_GET_BUF(&b);
710: if (rlen < ntohs(h->ip6_plen) || h->ip6_nxt != IPPROTO_ERPC)
711: goto end;
712: else {
713: rlen -= sizeof(struct ip6_hdr);
714: rpc = (struct tagRPCCall*) (h + 1);
715: }
716: #else
717: rpc = (struct tagRPCCall*) AIT_GET_BUF(&b);
718: #endif
719: }
720: if (rlen < sizeof(struct tagRPCCall))
721: goto end;
722: else
723: len = ntohl(rpc->call_len);
724: if (rlen < len || len > srv->srv_netbuf)
725: goto end;
726:
727: /* skip loop packet */
728: if (rpc->call_io & RPC_ACK)
729: goto end;
730:
731: /* check integrity of packet */
732: crc = ntohs(rpc->call_crc);
733: rpc->call_crc ^= rpc->call_crc;
734: if (crc != crcFletcher16((u_short*) AIT_GET_BUF(&b), len / 2))
735: goto end;
736:
737: /* check RPC packet session info */
738: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session))
739: goto end;
740:
741: c = _allocClient(srv, &sa);
742: if (!c) {
743: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
744: usleep(2000); /* blocked client delay */
745: goto end;
746: } else {
747: memcpy(AIT_GET_BUF(&c->cli_buf), rpc, len);
748: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
749:
750: c->cli_sock = TASK_FD(task);
751: memcpy(&c->cli_sa, &sa, sizeof c->cli_sa);
752:
753: /* armed timer for close stateless connection */
754: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
755: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
756: c, ts, c, 0);
757: }
758:
759: noreply = RPC_CHK_NOREPLY(rpc);
760:
761: /* execute RPC call */
762: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
763:
764: /* send RPC reply */
765: if (!noreply && (rpc->call_io & RPC_REQ))
766: schedWrite(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
767: c, TASK_FD(task), rpc, len);
768: end:
769: AIT_FREE_VAL(&b);
770: schedReadSelf(task);
771: taskExit(task, NULL);
772: }
773:
774:
775: static void *
776: txBPFPacket(sched_task_t *task)
777: {
778: #ifndef __linux__
779: rpc_cli_t *c = TASK_ARG(task);
780: rpc_srv_t *s = c->cli_parent;
781: rpc_func_t *f = NULL;
782: u_char *buf = AIT_GET_BUF(&c->cli_buf);
783: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
784: int ret, wlen = sizeof(struct tagRPCCall);
785: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
786: struct ether_header *eh;
787: ait_val_t b = AIT_VAL_INIT;
788:
789: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
790: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
791: TASK_ARG(task), ts, TASK_ARG(task), 0);
792:
793: if (rpc->call_argc) {
794: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
795: if (!f) {
796: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
797:
798: rpc->call_argc ^= rpc->call_argc;
799: RPC_SET_RETURN(rpc, -1);
800: RPC_SET_ERRNO(rpc, rpc_Errno);
801: } else if (rpc_pktFreeSpace(c) > s->srv_netbuf) {
802: rpc_SetErr(EMSGSIZE, "Message too long");
803:
804: rpc->call_argc ^= rpc->call_argc;
805: RPC_SET_RETURN(rpc, -1);
806: RPC_SET_ERRNO(rpc, rpc_Errno);
807: } else {
808: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
809: /* Go Encapsulate variables */
810: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
811: RPC_RETVARS(c));
812: if (ret == -1) {
813: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
814:
815: rpc->call_argc ^= rpc->call_argc;
816: RPC_SET_RETURN(rpc, -1);
817: RPC_SET_ERRNO(rpc, rpc_Errno);
818: } else
819: wlen += ret;
820: }
821: }
822:
823: /* Free return values */
824: ait_freeVars(&RPC_RETVARS(c));
825:
826: rpc->call_len = htonl(wlen);
827: rpc->call_io = RPC_ACK;
828:
829: /* calculate CRC */
830: rpc->call_crc ^= rpc->call_crc;
831: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
832:
833: /* send reply */
834: AIT_SET_BUF(&b, NULL, wlen + ETHER_HDR_LEN);
835: eh = (struct ether_header*) AIT_GET_BUF(&b);
836: memcpy(eh->ether_dhost, LLADDR(&c->cli_sa.sdl), ETHER_ADDR_LEN);
837: eh->ether_type = htons(RPC_DEFPORT);
838: memcpy(eh + 1, buf, wlen);
839:
840: ret = write(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b));
841: AIT_FREE_VAL(&b);
842: if (ret == -1) {
843: /* close connection */
844: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
845: TASK_ARG(task), 0, NULL, 0);
846: }
847: #else
848: rpc_SetErr(ENOTSUP, "Feature isn't supported on Linux!");
849: #endif
850:
851: taskExit(task, NULL);
852: }
853:
854: static void *
855: rxBPFPacket(sched_task_t *task)
856: {
857: #ifndef __linux__
858: rpc_srv_t *srv = TASK_ARG(task);
859: rpc_cli_t *c = NULL;
860: int len, rlen, noreply;
861: u_short crc;
862: struct tagRPCCall *rpc;
863: sockaddr_t sa;
864: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
865: struct bpf_hdr *h;
866: struct ether_header *eh;
867: ait_val_t b = AIT_VAL_INIT;
868:
869: /* receive connect packet */
870: AIT_SET_BUF(&b, NULL, srv->srv_netbuf);
871: rlen = read(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b));
872: h = (struct bpf_hdr*) AIT_GET_BUF(&b);
873: rlen -= h->bh_hdrlen;
874: if (rlen < h->bh_datalen || h->bh_caplen != h->bh_datalen ||
875: rlen < ETHER_HDR_LEN + sizeof(struct tagRPCCall))
876: goto end;
877: else {
878: rlen = h->bh_caplen;
879: eh = (struct ether_header*) (AIT_GET_BUF(&b) + h->bh_hdrlen);
880: rlen -= ETHER_HDR_LEN;
881: rpc = (struct tagRPCCall*) (eh + 1);
882:
883: if (eh->ether_type != ntohs(RPC_DEFPORT))
884: goto end;
885: else
886: e_getlinkbymac((const ether_addr_t*) eh->ether_shost, &sa);
887: }
888: if (rlen < sizeof(struct tagRPCCall))
889: goto end;
890: else
891: len = ntohl(rpc->call_len);
892: if (rlen < len || len > srv->srv_netbuf)
893: goto end;
894:
895: #ifdef CHECK_ETHACK
896: /* skip loop packet */
897: if (rpc->call_io & RPC_ACK)
898: goto end;
899: #endif
900:
901: /* check integrity of packet */
902: crc = ntohs(rpc->call_crc);
903: rpc->call_crc ^= rpc->call_crc;
904: if (crc != crcFletcher16((u_short*) rpc, len / 2))
905: goto end;
906:
907: /* check RPC packet session info */
908: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session))
909: goto end;
910:
911: c = _allocClient(srv, &sa);
912: if (!c) {
913: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
914: usleep(2000); /* blocked client delay */
915: goto end;
916: } else {
917: memcpy(AIT_GET_BUF(&c->cli_buf), rpc, len);
918: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
919:
920: c->cli_sock = TASK_FD(task);
921: memcpy(&c->cli_sa, &sa, sizeof c->cli_sa);
922:
923: /* armed timer for close stateless connection */
924: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
925: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
926: c, ts, c, 0);
927: }
928:
929: noreply = RPC_CHK_NOREPLY(rpc);
930:
931: /* execute RPC call */
932: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
933:
934: /* send RPC reply */
935: if (!noreply && (rpc->call_io & RPC_REQ))
936: schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
937: c, TASK_FD(task), rpc, len);
938: end:
939: AIT_FREE_VAL(&b);
940: schedReadSelf(task);
941: #else
942: rpc_SetErr(ENOTSUP, "Feature isn't supported on Linux!");
943: #endif
944:
945: taskExit(task, NULL);
946: }
947:
948:
949: static void *
950: txEXTPacket(sched_task_t *task)
951: {
952: rpc_cli_t *c = TASK_ARG(task);
953: rpc_srv_t *s = c->cli_parent;
954: rpc_func_t *f = NULL;
955: u_char *buf = AIT_GET_BUF(&c->cli_buf);
956: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
957: int ret, wlen = sizeof(struct tagRPCCall);
958: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
959:
960: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
961: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
962: TASK_ARG(task), ts, TASK_ARG(task), 0);
963:
964: if (rpc->call_argc) {
965: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
966: if (!f) {
967: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
968:
969: rpc->call_argc ^= rpc->call_argc;
970: RPC_SET_RETURN(rpc, -1);
971: RPC_SET_ERRNO(rpc, rpc_Errno);
972: } else if (rpc_pktFreeSpace(c) > s->srv_netbuf) {
973: rpc_SetErr(EMSGSIZE, "Message too long");
974:
975: rpc->call_argc ^= rpc->call_argc;
976: RPC_SET_RETURN(rpc, -1);
977: RPC_SET_ERRNO(rpc, rpc_Errno);
978: } else {
979: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
980: /* Go Encapsulate variables */
981: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
982: RPC_RETVARS(c));
983: if (ret == -1) {
984: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
985:
986: rpc->call_argc ^= rpc->call_argc;
987: RPC_SET_RETURN(rpc, -1);
988: RPC_SET_ERRNO(rpc, rpc_Errno);
989: } else
990: wlen += ret;
991: }
992: }
993:
994: /* Free return values */
995: ait_freeVars(&RPC_RETVARS(c));
996:
997: rpc->call_len = htonl(wlen);
998: rpc->call_io = RPC_ACK;
999:
1000: /* send reply */
1001: ret = write(TASK_FD(task), buf, wlen);
1002: if (ret == -1) {
1003: /* close connection */
1004: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
1005: TASK_ARG(task), 0, NULL, 0);
1006: }
1007:
1008: taskExit(task, NULL);
1009: }
1010:
1011: static void *
1012: rxEXTPacket(sched_task_t *task)
1013: {
1014: rpc_srv_t *srv = TASK_ARG(task);
1015: rpc_cli_t *c = NULL;
1016: int len, noreply = 0, rlen = AIT_LEN(&c->cli_buf);
1017: struct tagRPCCall *rpc;
1018: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
1019: sockaddr_t sa;
1020: ait_val_t b = AIT_VAL_INIT;
1021:
1022: memset(&sa, 0, sizeof sa);
1023: /* receive connect packet */
1024: AIT_SET_BUF(&b, NULL, srv->srv_netbuf);
1025: rlen = read(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b));
1026: rpc = (struct tagRPCCall*) AIT_GET_BUF(&b);
1027: if (rlen < sizeof(struct tagRPCCall))
1028: goto end;
1029: else
1030: len = ntohl(rpc->call_len);
1031: if (rlen < len || len > srv->srv_netbuf)
1032: goto end;
1033:
1034: /* skip loop packet */
1035: if (rpc->call_io & RPC_ACK)
1036: goto end;
1037:
1038: /* check RPC packet session info */
1039: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session))
1040: goto end;
1041:
1042: c = _allocClient(srv, &sa);
1043: if (!c) {
1044: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
1045: usleep(2000); /* blocked client delay */
1046: goto end;
1047: } else {
1048: memcpy(AIT_GET_BUF(&c->cli_buf), AIT_GET_BUF(&b), len);
1049: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
1050:
1051: c->cli_sock = TASK_FD(task);
1052:
1053: /* armed timer for close stateless connection */
1054: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
1055: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
1056: c, ts, c, 0);
1057: }
1058:
1059: noreply = RPC_CHK_NOREPLY(rpc);
1060:
1061: /* execute RPC call */
1062: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
1063:
1064: /* send RPC reply */
1065: if (!noreply && (rpc->call_io & RPC_REQ))
1066: schedWrite(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
1067: c, TASK_FD(task), rpc, len);
1068: end:
1069: AIT_FREE_VAL(&b);
1070: schedReadSelf(task);
1071: taskExit(task, NULL);
1072: }
1073:
1074: /* ------------------------------------------------------ */
1075:
1076: void
1077: rpc_freeBLOBCli(rpc_cli_t * __restrict c)
1078: {
1079: rpc_srv_t *s = c->cli_parent;
1080:
1081: schedCancelby(s->srv_blob.root, taskMAX, CRITERIA_ARG, c, NULL);
1082:
1083: /* free buffer */
1084: AIT_FREE_VAL(&c->cli_buf);
1085:
1086: array_Del(s->srv_blob.clients, c->cli_id, 0);
1087: if (c)
1088: e_free(c);
1089: }
1090:
1091:
1092: static void *
1093: closeBLOBClient(sched_task_t *task)
1094: {
1095: int sock = ((rpc_cli_t*) TASK_ARG(task))->cli_sock;
1096:
1097: rpc_freeBLOBCli(TASK_ARG(task));
1098:
1099: /* close client socket */
1100: shutdown(sock, SHUT_RDWR);
1101: close(sock);
1102: taskExit(task, NULL);
1103: }
1104:
1105: static void *
1106: txBLOB(sched_task_t *task)
1107: {
1108: rpc_cli_t *c = TASK_ARG(task);
1109: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1110: int wlen = sizeof(struct tagBLOBHdr);
1111:
1112: /* send reply */
1113: wlen = send(TASK_FD(task), buf, wlen, MSG_NOSIGNAL);
1114: if (wlen == -1 || wlen != sizeof(struct tagBLOBHdr)) {
1115: /* close blob connection */
1116: schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0);
1117: }
1118:
1119: taskExit(task, NULL);
1120: }
1121:
1122: static void *
1123: rxBLOB(sched_task_t *task)
1124: {
1125: rpc_cli_t *c = TASK_ARG(task);
1126: rpc_srv_t *s = c->cli_parent;
1127: rpc_blob_t *b;
1128: struct tagBLOBHdr blob;
1129: int rlen;
1130:
1131: memset(&blob, 0, sizeof blob);
1132: rlen = recv(TASK_FD(task), &blob, sizeof blob, 0);
1133: if (rlen < 1) {
1134: /* close blob connection */
1135: schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0);
1136: taskExit(task, NULL);
1137: }
1138:
1139: /* check BLOB packet */
1140: if (rlen < sizeof(struct tagBLOBHdr)) {
1141: rpc_SetErr(ERPCMISMATCH, "Short BLOB packet");
1142:
1143: schedReadSelf(task);
1144: taskExit(task, NULL);
1145: }
1146:
1147: /* check RPC packet session info */
1148: if (rpc_chkPktSession(&blob.hdr_session, &s->srv_session)) {
1149: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
1150: blob.hdr_cmd = error;
1151: goto end;
1152: }
1153:
1154: /* Go to proceed packet ... */
1155: switch (blob.hdr_cmd) {
1156: case get:
1157: if (!(b = rpc_srv_getBLOB(s, ntohl(blob.hdr_var)))) {
1158: rpc_SetErr(EINVAL, "Var=%x not found", ntohl(blob.hdr_var));
1159: blob.hdr_cmd = no;
1160: RPC_SET_BLOB_RET(&blob, -1);
1161: break;
1162: } else
1163: blob.hdr_len = htonl(b->blob_len);
1164:
1165: if (rpc_srv_blobMap(s, b) != -1) {
1166: /* deliver BLOB variable to client */
1167: blob.hdr_ret = htonl(rpc_srv_sendBLOB(c, b));
1168: rpc_srv_blobUnmap(b);
1169: } else {
1170: blob.hdr_cmd = error;
1171: RPC_SET_BLOB_RET(&blob, -1);
1172: }
1173: break;
1174: case set:
1175: if ((b = rpc_srv_registerBLOB(s, ntohl(blob.hdr_len),
1176: ntohl(blob.hdr_ret)))) {
1177: /* set new BLOB variable for reply :) */
1178: blob.hdr_var = htonl(b->blob_var);
1179:
1180: /* receive BLOB from client */
1181: blob.hdr_ret = htonl(rpc_srv_recvBLOB(c, b));
1182: rpc_srv_blobUnmap(b);
1183: } else {
1184: blob.hdr_cmd = error;
1185: RPC_SET_BLOB_RET(&blob, -1);
1186: }
1187: break;
1188: case unset:
1189: if (rpc_srv_unregisterBLOB(s, ntohl(blob.hdr_var)) == -1) {
1190: blob.hdr_cmd = error;
1191: RPC_SET_BLOB_RET(&blob, -1);
1192: }
1193: break;
1194: default:
1195: rpc_SetErr(EPROCUNAVAIL, "Unsupported BLOB command %d", blob.hdr_cmd);
1196: blob.hdr_cmd = error;
1197: RPC_SET_BLOB_RET(&blob, -1);
1198: }
1199:
1200: end:
1201: memcpy(AIT_ADDR(&c->cli_buf), &blob, sizeof blob);
1202: schedWrite(TASK_ROOT(task), txBLOB, TASK_ARG(task), TASK_FD(task), NULL, 0);
1203: schedReadSelf(task);
1204: taskExit(task, NULL);
1205: }
1206:
1207: static void *
1208: flushBLOB(sched_task_t *task)
1209: {
1210: #ifdef atomic_load_acq_ptr
1211: uintptr_t sigArg = atomic_load_acq_ptr(&_glSigArg);
1212: #else
1213: uintptr_t sigArg = *((volatile uintptr_t*) &_glSigArg);
1214: #endif
1215: rpc_srv_t *srv = sigArg ? (void*) sigArg : TASK_ARG(task);
1216: rpc_blob_t *b, *tmp;
1217:
1218: TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) {
1219: TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node);
1220:
1221: rpc_srv_blobFree(srv, b);
1222: e_free(b);
1223: }
1224:
1225: if (sigArg) {
1226: /* disabled kqueue support in libaitsched */
1227: struct sigaction sa;
1228:
1229: memset(&sa, 0, sizeof sa);
1230: sigemptyset(&sa.sa_mask);
1231: sa.sa_handler = (void (*)(int)) flushBLOB;
1232: sa.sa_flags = SA_RESTART | SA_RESETHAND;
1233: sigaction(SIGFBLOB, &sa, NULL);
1234: return NULL;
1235: } else {
1236: schedSignalSelf(task);
1237: taskExit(task, NULL);
1238: }
1239: }
1240:
1241: static void *
1242: acceptBLOBClients(sched_task_t *task)
1243: {
1244: rpc_srv_t *srv = TASK_ARG(task);
1245: rpc_cli_t *c = NULL;
1246: register int i;
1247: socklen_t salen = E_SOCKADDR_MAX;
1248: int sock;
1249: #ifdef TCP_NOPUSH
1250: int n = 1;
1251: #endif
1252:
1253: /* check free slots for connect */
1254: for (i = 0; i < array_Size(srv->srv_blob.clients) &&
1255: (c = array(srv->srv_blob.clients, i, rpc_cli_t*)); i++);
1256: if (c) { /* no more free slots! */
1257: EVERBOSE(1, "BLOB client quota exceeded! Connection will be shutdown!\n");
1258: if ((sock = accept(TASK_FD(task), NULL, NULL)) != -1) {
1259: shutdown(sock, SHUT_RDWR);
1260: close(sock);
1261: }
1262: goto end;
1263: }
1264:
1265: c = e_malloc(sizeof(rpc_cli_t));
1266: if (!c) {
1267: LOGERR;
1268: srv->srv_kill = srv->srv_blob.kill = 1;
1269: taskExit(task, NULL);
1270: } else {
1271: memset(c, 0, sizeof(rpc_cli_t));
1272: array_Set(srv->srv_blob.clients, i, c);
1273: c->cli_id = i;
1274: c->cli_parent = srv;
1275: }
1276:
1277: /* alloc empty buffer */
1278: AIT_SET_BUFSIZ(&c->cli_buf, 0, srv->srv_netbuf);
1279:
1280: /* accept client */
1281: c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen);
1282: if (c->cli_sock == -1) {
1283: LOGERR;
1284: AIT_FREE_VAL(&c->cli_buf);
1285: array_Del(srv->srv_blob.clients, i, 42);
1286: goto end;
1287: } else {
1288: #ifdef TCP_NOPUSH
1289: setsockopt(c->cli_sock, IPPROTO_TCP, TCP_NOPUSH, &n, sizeof n);
1290: #endif
1291: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
1292: fcntl(c->cli_sock, F_SETFD, FD_CLOEXEC);
1293: }
1294:
1295: schedRead(TASK_ROOT(task), rxBLOB, c, c->cli_sock, NULL, 0);
1296: end:
1297: schedReadSelf(task);
1298: taskExit(task, NULL);
1299: }
1300:
1301: /* ------------------------------------------------------ */
1302:
1303: /*
1304: * rpc_srv_initBLOBServer() - Init & create BLOB Server
1305: *
1306: * @srv = RPC server instance
1307: * @Port = Port for bind server, if Port == 0 default port is selected
1308: * @diskDir = Disk place for BLOB file objects
1309: * return: -1 == error or 0 bind and created BLOB server instance
1310: */
1311: int
1312: rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, u_short Port, const char *diskDir)
1313: {
1314: int n = 1;
1315: socklen_t salen;
1316:
1317: if (!srv || srv->srv_kill) {
1318: rpc_SetErr(EINVAL, "Invalid parameters can`t init BLOB server");
1319: return -1;
1320: }
1321:
1322: memset(&srv->srv_blob, 0, sizeof srv->srv_blob);
1323: if (access(diskDir, R_OK | W_OK) == -1) {
1324: LOGERR;
1325: return -1;
1326: } else
1327: AIT_SET_STR(&srv->srv_blob.dir, diskDir);
1328:
1329: /* init blob list */
1330: TAILQ_INIT(&srv->srv_blob.blobs);
1331:
1332: srv->srv_blob.server.cli_parent = srv;
1333:
1334: memcpy(&srv->srv_blob.server.cli_sa, &srv->srv_server.cli_sa, sizeof srv->srv_blob.server.cli_sa);
1335: switch (srv->srv_blob.server.cli_sa.sa.sa_family) {
1336: case AF_INET:
1337: srv->srv_blob.server.cli_sa.sin.sin_port =
1338: htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin.sin_port) + 1);
1339: salen = sizeof srv->srv_blob.server.cli_sa.sin;
1340: break;
1341: case AF_INET6:
1342: srv->srv_blob.server.cli_sa.sin6.sin6_port =
1343: htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin6.sin6_port) + 1);
1344: salen = sizeof srv->srv_blob.server.cli_sa.sin6;
1345: break;
1346: case AF_LOCAL:
1347: strlcat(srv->srv_blob.server.cli_sa.sun.sun_path, ".blob",
1348: sizeof srv->srv_blob.server.cli_sa.sun.sun_path);
1349: salen = sizeof srv->srv_blob.server.cli_sa.sun;
1350: break;
1351: default:
1352: AIT_FREE_VAL(&srv->srv_blob.dir);
1353: return -1;
1354: }
1355:
1356: /* create BLOB server socket */
1357: srv->srv_blob.server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, SOCK_STREAM, 0);
1358: if (srv->srv_blob.server.cli_sock == -1) {
1359: LOGERR;
1360: AIT_FREE_VAL(&srv->srv_blob.dir);
1361: return -1;
1362: }
1363: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
1364: LOGERR;
1365: close(srv->srv_blob.server.cli_sock);
1366: AIT_FREE_VAL(&srv->srv_blob.dir);
1367: return -1;
1368: }
1369: n = srv->srv_netbuf;
1370: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
1371: LOGERR;
1372: close(srv->srv_blob.server.cli_sock);
1373: AIT_FREE_VAL(&srv->srv_blob.dir);
1374: return -1;
1375: }
1376: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
1377: LOGERR;
1378: close(srv->srv_blob.server.cli_sock);
1379: AIT_FREE_VAL(&srv->srv_blob.dir);
1380: return -1;
1381: }
1382: if (bind(srv->srv_blob.server.cli_sock, &srv->srv_blob.server.cli_sa.sa, salen) == -1) {
1383: LOGERR;
1384: close(srv->srv_blob.server.cli_sock);
1385: AIT_FREE_VAL(&srv->srv_blob.dir);
1386: return -1;
1387: } else
1388: fcntl(srv->srv_blob.server.cli_sock, F_SETFL,
1389: fcntl(srv->srv_blob.server.cli_sock, F_GETFL) | O_NONBLOCK);
1390:
1391:
1392: /* allocate pool for concurent blob clients */
1393: srv->srv_blob.clients = array_Init(array_Size(srv->srv_clients));
1394: if (!srv->srv_blob.clients) {
1395: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1396: close(srv->srv_blob.server.cli_sock);
1397: AIT_FREE_VAL(&srv->srv_blob.dir);
1398: return -1;
1399: }
1400:
1401: /* init blob scheduler */
1402: srv->srv_blob.root = schedBegin();
1403: if (!srv->srv_blob.root) {
1404: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1405: array_Destroy(&srv->srv_blob.clients);
1406: close(srv->srv_blob.server.cli_sock);
1407: AIT_FREE_VAL(&srv->srv_blob.dir);
1408: return -1;
1409: }
1410:
1411: return 0;
1412: }
1413:
1414: /*
1415: * rpc_srv_endBLOBServer() - Destroy BLOB server, close all opened sockets and free resources
1416: *
1417: * @srv = RPC Server instance
1418: * return: none
1419: */
1420: void
1421: rpc_srv_endBLOBServer(rpc_srv_t * __restrict srv)
1422: {
1423: if (!srv)
1424: return;
1425:
1426: srv->srv_blob.kill = 1;
1427:
1428: if (srv->srv_blob.server.cli_sa.sa.sa_family == AF_LOCAL)
1429: unlink(srv->srv_blob.server.cli_sa.sun.sun_path);
1430:
1431: schedEnd(&srv->srv_blob.root);
1432: }
1433:
1434: /*
1435: * rpc_srv_loopBLOBServer() - Execute Main BLOB server loop and wait for clients requests
1436: *
1437: * @srv = RPC Server instance
1438: * return: -1 error or 0 ok, infinite loop ...
1439: */
1440: int
1441: rpc_srv_loopBLOBServer(rpc_srv_t * __restrict srv)
1442: {
1443: rpc_cli_t *c;
1444: register int i;
1445: rpc_blob_t *b, *tmp;
1446: struct timespec ts = { RPC_SCHED_POLLING, 0 };
1447:
1448: if (!srv || srv->srv_kill) {
1449: rpc_SetErr(EINVAL, "Invalid parameter can`t start BLOB server");
1450: return -1;
1451: }
1452:
1453: if (listen(srv->srv_blob.server.cli_sock, array_Size(srv->srv_blob.clients)) == -1) {
1454: LOGERR;
1455: return -1;
1456: }
1457:
1458: if (!schedSignal(srv->srv_blob.root, flushBLOB, srv, SIGFBLOB, NULL, 0)) {
1459: /* disabled kqueue support in libaitsched */
1460: struct sigaction sa;
1461:
1462: #ifdef atomic_store_rel_ptr
1463: atomic_store_rel_ptr(&_glSigArg, (uintptr_t) srv);
1464: #else
1465: *((volatile uintptr_t*) &_glSigArg) = (uintptr_t) srv;
1466: #endif
1467:
1468: memset(&sa, 0, sizeof sa);
1469: sigemptyset(&sa.sa_mask);
1470: sa.sa_handler = (void (*)(int)) flushBLOB;
1471: sa.sa_flags = SA_RESTART | SA_RESETHAND;
1472: sigaction(SIGFBLOB, &sa, NULL);
1473: }
1474:
1475: if (!schedRead(srv->srv_blob.root, acceptBLOBClients, srv,
1476: srv->srv_blob.server.cli_sock, NULL, 0)) {
1477: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1478: return -1;
1479: }
1480:
1481: schedPolling(srv->srv_blob.root, &ts, NULL);
1482: /* main rpc loop */
1483: schedRun(srv->srv_blob.root, &srv->srv_blob.kill);
1484:
1485: /* detach blobs */
1486: TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) {
1487: TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node);
1488:
1489: rpc_srv_blobFree(srv, b);
1490: e_free(b);
1491: }
1492:
1493: /* close all clients connections & server socket */
1494: for (i = 0; i < array_Size(srv->srv_blob.clients); i++) {
1495: c = array(srv->srv_blob.clients, i, rpc_cli_t*);
1496: if (c) {
1497: shutdown(c->cli_sock, SHUT_RDWR);
1498: close(c->cli_sock);
1499:
1500: schedCancelby(srv->srv_blob.root, taskMAX, CRITERIA_ARG, c, NULL);
1501: AIT_FREE_VAL(&c->cli_buf);
1502: }
1503: array_Del(srv->srv_blob.clients, i, 42);
1504: }
1505: array_Destroy(&srv->srv_blob.clients);
1506:
1507: close(srv->srv_blob.server.cli_sock);
1508:
1509: AIT_FREE_VAL(&srv->srv_blob.dir);
1510: return 0;
1511: }
1512:
1513:
1514: /*
1515: * rpc_srv_initServer() - Init & create RPC Server
1516: *
1517: * @InstID = Instance for authentication & recognition
1518: * @concurentClients = Concurent clients at same time to this server
1519: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
1520: * @csHost = Host name or address for bind server, if NULL any address
1521: * @Port = Port for bind server, if Port == 0 default port is selected
1522: * @proto = Protocol, if == 0 choose SOCK_STREAM
1523: * return: NULL == error or !=NULL bind and created RPC server instance
1524: */
1525: rpc_srv_t *
1526: rpc_srv_initServer(u_char InstID, int concurentClients, int netBuf,
1527: const char *csHost, u_short Port, int proto)
1528: {
1529: int n = 1;
1530: rpc_srv_t *srv = NULL;
1531: sockaddr_t sa = E_SOCKADDR_INIT;
1532: socklen_t salen;
1533:
1534: if (!concurentClients || (proto < 0 || proto > SOCK_RAW)) {
1535: rpc_SetErr(EINVAL, "Invalid parameters can`t init RPC server");
1536: return NULL;
1537: }
1538: if (!Port && proto < SOCK_RAW)
1539: Port = RPC_DEFPORT;
1540: if (!(salen = e_gethostbyname(csHost, Port, &sa)))
1541: return NULL;
1542: if (!proto)
1543: proto = SOCK_STREAM;
1544: if (netBuf < RPC_MIN_BUFSIZ)
1545: netBuf = BUFSIZ;
1546: else
1547: netBuf = E_ALIGN(netBuf, 2); /* align netBuf length */
1548:
1549: #ifdef HAVE_SRANDOMDEV
1550: srandomdev();
1551: #else
1552: time_t tim;
1553:
1554: srandom((time(&tim) ^ getpid()));
1555: #endif
1556:
1557: srv = e_malloc(sizeof(rpc_srv_t));
1558: if (!srv) {
1559: LOGERR;
1560: return NULL;
1561: } else
1562: memset(srv, 0, sizeof(rpc_srv_t));
1563:
1564: srv->srv_proto = proto;
1565: srv->srv_netbuf = netBuf;
1566: srv->srv_session.sess_version = RPC_VERSION;
1567: srv->srv_session.sess_instance = InstID;
1568:
1569: srv->srv_server.cli_parent = srv;
1570: memcpy(&srv->srv_server.cli_sa, &sa, sizeof srv->srv_server.cli_sa);
1571:
1572: /* init functions */
1573: pthread_mutex_init(&srv->srv_funcs.mtx, NULL);
1574: SLIST_INIT(&srv->srv_funcs);
1575: AVL_INIT(&srv->srv_funcs);
1576:
1577: /* init scheduler */
1578: srv->srv_root = schedBegin();
1579: if (!srv->srv_root) {
1580: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1581: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1582: e_free(srv);
1583: return NULL;
1584: } else
1585: schedSignalDispatch(srv->srv_root, 42);
1586:
1587: /* init pool for clients */
1588: srv->srv_clients = array_Init(concurentClients);
1589: if (!srv->srv_clients) {
1590: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1591: schedEnd(&srv->srv_root);
1592: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1593: e_free(srv);
1594: return NULL;
1595: }
1596:
1597: /* create server socket */
1598: srv->srv_server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family,
1599: srv->srv_proto, srv->srv_proto == SOCK_RAW ? IPPROTO_ERPC : 0);
1600: if (srv->srv_server.cli_sock == -1) {
1601: LOGERR;
1602: array_Destroy(&srv->srv_clients);
1603: schedEnd(&srv->srv_root);
1604: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1605: e_free(srv);
1606: return NULL;
1607: }
1608: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
1609: LOGERR;
1610: goto err;
1611: }
1612: if (srv->srv_proto == SOCK_STREAM)
1613: setsockopt(srv->srv_server.cli_sock, IPPROTO_TCP, TCP_NODELAY, &n, sizeof n);
1614: n = srv->srv_netbuf;
1615: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
1616: LOGERR;
1617: goto err;
1618: }
1619: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
1620: LOGERR;
1621: goto err;
1622: }
1623: if (bind(srv->srv_server.cli_sock, &srv->srv_server.cli_sa.sa, salen) == -1) {
1624: LOGERR;
1625: goto err;
1626: } else
1627: fcntl(srv->srv_server.cli_sock, F_SETFL,
1628: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
1629:
1630: rpc_register_srvPing(srv);
1631:
1632: return srv;
1633: err: /* error condition */
1634: close(srv->srv_server.cli_sock);
1635: array_Destroy(&srv->srv_clients);
1636: schedEnd(&srv->srv_root);
1637: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1638: e_free(srv);
1639: return NULL;
1640: }
1641:
1642: /*
1643: * rpc_srv_endServer() - Destroy RPC server, close all opened sockets and free resources
1644: *
1645: * @psrv = RPC Server instance
1646: * return: none
1647: */
1648: void
1649: rpc_srv_endServer(rpc_srv_t ** __restrict psrv)
1650: {
1651: if (!psrv || !*psrv)
1652: return;
1653:
1654: /* if send kill to blob server */
1655: rpc_srv_endBLOBServer(*psrv);
1656: /* wait for BLOB server done */
1657: while (*(&(*psrv)->srv_blob.root))
1658: usleep(1000);
1659:
1660: (*psrv)->srv_kill = 1;
1661: sleep(RPC_SCHED_POLLING);
1662:
1663: if ((*psrv)->srv_server.cli_sa.sa.sa_family == AF_LOCAL)
1664: unlink((*psrv)->srv_server.cli_sa.sun.sun_path);
1665:
1666: schedEnd(&(*psrv)->srv_root);
1667:
1668: pthread_mutex_destroy(&(*psrv)->srv_funcs.mtx);
1669: e_free(*psrv);
1670: *psrv = NULL;
1671: }
1672:
1673: /*
1674: * rpc_srv_loopServer() - Execute Main server loop and wait for clients requests
1675: *
1676: * @srv = RPC Server instance
1677: * return: -1 error or 0 ok, infinite loop ...
1678: */
1679: int
1680: rpc_srv_loopServer(rpc_srv_t * __restrict srv)
1681: {
1682: rpc_cli_t *c;
1683: register int i;
1684: rpc_func_t *f;
1685: struct timespec ts = { RPC_SCHED_POLLING, 0 };
1686:
1687: if (!srv) {
1688: rpc_SetErr(EINVAL, "Invalid parameter can`t start RPC server");
1689: return -1;
1690: }
1691:
1692: if (srv->srv_proto == SOCK_STREAM)
1693: if (listen(srv->srv_server.cli_sock, array_Size(srv->srv_clients)) == -1) {
1694: LOGERR;
1695: return -1;
1696: }
1697:
1698: if (!schedRead(srv->srv_root, cbProto[srv->srv_proto][CB_ACCEPTCLIENT], srv,
1699: srv->srv_server.cli_sock, NULL, 0)) {
1700: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1701: return -1;
1702: }
1703:
1704: schedPolling(srv->srv_root, &ts, NULL);
1705: /* main rpc loop */
1706: schedRun(srv->srv_root, &srv->srv_kill);
1707: schedSignalDispatch(srv->srv_root, 0);
1708:
1709: /* close all clients connections & server socket */
1710: for (i = 0; i < array_Size(srv->srv_clients); i++) {
1711: c = array(srv->srv_clients, i, rpc_cli_t*);
1712: if (c) {
1713: if (srv->srv_proto == SOCK_STREAM) {
1714: shutdown(c->cli_sock, SHUT_RDWR);
1715: close(c->cli_sock);
1716: }
1717:
1718: schedCancelby(srv->srv_root, taskMAX, CRITERIA_ARG, c, NULL);
1719: ait_freeVars(&RPC_RETVARS(c));
1720: AIT_FREE_VAL(&c->cli_buf);
1721: }
1722: array_Del(srv->srv_clients, i, 42);
1723: }
1724: array_Destroy(&srv->srv_clients);
1725:
1726: if (srv->srv_proto != SOCK_EXT)
1727: close(srv->srv_server.cli_sock);
1728:
1729: /* detach exported calls */
1730: RPC_FUNCS_LOCK(&srv->srv_funcs);
1731: while ((f = SLIST_FIRST(&srv->srv_funcs))) {
1732: SLIST_REMOVE_HEAD(&srv->srv_funcs, func_next);
1733:
1734: AIT_FREE_VAL(&f->func_name);
1735: e_free(f);
1736: }
1737: srv->srv_funcs.avlh_root = NULL;
1738: RPC_FUNCS_UNLOCK(&srv->srv_funcs);
1739:
1740: return 0;
1741: }
1742:
1743:
1744: /*
1745: * rpc_srv_execCall() Execute registered call from RPC server
1746: *
1747: * @cli = RPC client
1748: * @rpc = IN RPC call structure
1749: * @funcname = Execute RPC function
1750: * @args = IN RPC calling arguments from RPC client
1751: * return: -1 error, !=-1 ok
1752: */
1753: int
1754: rpc_srv_execCall(rpc_cli_t * __restrict cli, struct tagRPCCall * __restrict rpc,
1755: ait_val_t funcname, array_t * __restrict args)
1756: {
1757: rpc_callback_t func;
1758:
1759: if (!cli || !rpc || !AIT_ADDR(&funcname)) {
1760: rpc_SetErr(EINVAL, "Invalid parameter can`t exec function");
1761: return -1;
1762: }
1763:
1764: func = AIT_GET_LIKE(&funcname, rpc_callback_t);
1765: return func(cli, rpc, args);
1766: }
1767:
1768:
1769: /*
1770: * rpc_srv_initServer2() - Init & create layer2 RPC Server
1771: *
1772: * @InstID = Instance for authentication & recognition
1773: * @concurentClients = Concurent clients at same time to this server
1774: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
1775: * @csIface = Interface name for bind server, if NULL first interface on host
1776: * return: NULL == error or !=NULL bind and created RPC server instance
1777: */
1778: rpc_srv_t *
1779: rpc_srv_initServer2(u_char InstID, int concurentClients, int netBuf, const char *csIface)
1780: {
1781: #ifndef __linux__
1782: int n = 1;
1783: rpc_srv_t *srv = NULL;
1784: sockaddr_t sa = E_SOCKADDR_INIT;
1785: char szIface[64], szStr[STRSIZ];
1786: register int i;
1787: struct ifreq ifr;
1788: struct bpf_insn insns[] = {
1789: BPF_STMT(BPF_LD + BPF_H + BPF_ABS, 12),
1790: BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, RPC_DEFPORT, 0, 1),
1791: BPF_STMT(BPF_RET + BPF_K, -1),
1792: BPF_STMT(BPF_RET + BPF_K, 0),
1793: };
1794: struct bpf_program fcode = {
1795: .bf_len = sizeof(insns) / sizeof(struct bpf_insn),
1796: .bf_insns = insns
1797: };
1798:
1799: if (!concurentClients) {
1800: rpc_SetErr(EINVAL, "Invalid parameters can`t init RPC server");
1801: return NULL;
1802: }
1803: if (!csIface) {
1804: if (e_get1stiface(szIface, sizeof szIface))
1805: return NULL;
1806: } else
1807: strlcpy(szIface, csIface, sizeof szIface);
1808: if (!e_getifacebyname(szIface, &sa))
1809: return NULL;
1810:
1811: #ifdef HAVE_SRANDOMDEV
1812: srandomdev();
1813: #else
1814: time_t tim;
1815:
1816: srandom((time(&tim) ^ getpid()));
1817: #endif
1818:
1819: srv = e_malloc(sizeof(rpc_srv_t));
1820: if (!srv) {
1821: LOGERR;
1822: return NULL;
1823: } else
1824: memset(srv, 0, sizeof(rpc_srv_t));
1825:
1826: srv->srv_proto = SOCK_BPF;
1827: srv->srv_netbuf = netBuf;
1828: srv->srv_session.sess_version = RPC_VERSION;
1829: srv->srv_session.sess_instance = InstID;
1830:
1831: srv->srv_server.cli_parent = srv;
1832: memcpy(&srv->srv_server.cli_sa, &sa, sizeof srv->srv_server.cli_sa);
1833:
1834: /* init functions */
1835: pthread_mutex_init(&srv->srv_funcs.mtx, NULL);
1836: SLIST_INIT(&srv->srv_funcs);
1837: AVL_INIT(&srv->srv_funcs);
1838:
1839: /* init scheduler */
1840: srv->srv_root = schedBegin();
1841: if (!srv->srv_root) {
1842: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1843: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1844: e_free(srv);
1845: return NULL;
1846: } else
1847: schedSignalDispatch(srv->srv_root, 42);
1848:
1849: /* init pool for clients */
1850: srv->srv_clients = array_Init(concurentClients);
1851: if (!srv->srv_clients) {
1852: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1853: schedEnd(&srv->srv_root);
1854: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1855: e_free(srv);
1856: return NULL;
1857: }
1858:
1859: /* create server handler */
1860: for (i = 0; i < 10; i++) {
1861: memset(szStr, 0, sizeof szStr);
1862: snprintf(szStr, sizeof szStr, "/dev/bpf%d", i);
1863: srv->srv_server.cli_sock = open(szStr, O_RDWR);
1864: if (srv->srv_server.cli_sock > STDERR_FILENO)
1865: break;
1866: }
1867: if (srv->srv_server.cli_sock < 3) {
1868: LOGERR;
1869: array_Destroy(&srv->srv_clients);
1870: schedEnd(&srv->srv_root);
1871: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1872: e_free(srv);
1873: return NULL;
1874: }
1875:
1876: if (ioctl(srv->srv_server.cli_sock, BIOCIMMEDIATE, &n) == -1) {
1877: LOGERR;
1878: goto err;
1879: }
1880: if (ioctl(srv->srv_server.cli_sock, BIOCSETF, &fcode) == -1) {
1881: LOGERR;
1882: goto err;
1883: }
1884: n = (netBuf < RPC_MIN_BUFSIZ) ? getpagesize() : E_ALIGN(netBuf, 2);
1885: if (ioctl(srv->srv_server.cli_sock, BIOCSBLEN, &n) == -1) {
1886: LOGERR;
1887: goto err;
1888: } else
1889: srv->srv_netbuf = n;
1890:
1891: memset(&ifr, 0, sizeof ifr);
1892: strlcpy(ifr.ifr_name, szIface, sizeof ifr.ifr_name);
1893: if (ioctl(srv->srv_server.cli_sock, BIOCSETIF, &ifr) == -1) {
1894: LOGERR;
1895: goto err;
1896: } else
1897: fcntl(srv->srv_server.cli_sock, F_SETFL,
1898: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
1899:
1900: rpc_register_srvPing(srv);
1901:
1902: return srv;
1903: err: /* error condition */
1904: close(srv->srv_server.cli_sock);
1905: array_Destroy(&srv->srv_clients);
1906: schedEnd(&srv->srv_root);
1907: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1908: e_free(srv);
1909: #else
1910: rpc_SetErr(ENOTSUP, "Feature isn't supported on Linux!");
1911: #endif
1912:
1913: return NULL;
1914: }
1915:
1916: /*
1917: * rpc_srv_initServerExt() - Init & create pipe RPC Server
1918: *
1919: * @InstID = Instance for authentication & recognition
1920: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
1921: * @fd = File descriptor
1922: * return: NULL == error or !=NULL bind and created RPC server instance
1923: */
1924: rpc_srv_t *
1925: rpc_srv_initServerExt(u_char InstID, int netBuf, int fd)
1926: {
1927: rpc_srv_t *srv = NULL;
1928:
1929: #ifdef HAVE_SRANDOMDEV
1930: srandomdev();
1931: #else
1932: time_t tim;
1933:
1934: srandom((time(&tim) ^ getpid()));
1935: #endif
1936:
1937: srv = e_malloc(sizeof(rpc_srv_t));
1938: if (!srv) {
1939: LOGERR;
1940: return NULL;
1941: } else
1942: memset(srv, 0, sizeof(rpc_srv_t));
1943:
1944: srv->srv_proto = SOCK_EXT;
1945: srv->srv_netbuf = (netBuf < RPC_MIN_BUFSIZ) ?
1946: getpagesize() : E_ALIGN(netBuf, 2);
1947: srv->srv_session.sess_version = RPC_VERSION;
1948: srv->srv_session.sess_instance = InstID;
1949:
1950: srv->srv_server.cli_parent = srv;
1951: srv->srv_server.cli_sock = fd;
1952:
1953: /* init functions */
1954: pthread_mutex_init(&srv->srv_funcs.mtx, NULL);
1955: SLIST_INIT(&srv->srv_funcs);
1956: AVL_INIT(&srv->srv_funcs);
1957:
1958: /* init scheduler */
1959: srv->srv_root = schedBegin();
1960: if (!srv->srv_root) {
1961: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1962: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1963: e_free(srv);
1964: return NULL;
1965: } else
1966: schedSignalDispatch(srv->srv_root, 42);
1967:
1968: /* init pool for clients */
1969: srv->srv_clients = array_Init(1);
1970: if (!srv->srv_clients) {
1971: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1972: schedEnd(&srv->srv_root);
1973: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1974: e_free(srv);
1975: return NULL;
1976: }
1977:
1978: fcntl(srv->srv_server.cli_sock, F_SETFL,
1979: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
1980:
1981: rpc_register_srvPing(srv);
1982:
1983: return srv;
1984: }
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