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 1.34 2025/03/31 17:06:03 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 - 2025
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: #ifdef __linux__
73: #ifdef __mips__
74: static sched_task_func_t cbProto[SOCK_MAX_SUPPORT][4] = {
75: { acceptClients, closeClient, rxPacket, txPacket }, /* SOCK_STREAM */
76: { rxUDPPacket, freeClient, NULL /*rxUDPPacket*/, txUDPPacket }, /* SOCK_DGRAM */
77: { acceptClients, closeClient, rxPacket, txPacket }, /* SOCK_STREAM */
78: { rxRAWPacket, freeClient, NULL /*rxRAWPacket*/, txRAWPacket }, /* SOCK_RAW */
79: { rxBPFPacket, freeClient, NULL /*rxBPFPacket*/, txBPFPacket }, /* SOCK_BPF */
80: { rxEXTPacket, freeClient, NULL /*rxEXTPacket*/, txEXTPacket } /* SOCK_EXT */
81: };
82: #else
83: static sched_task_func_t cbProto[SOCK_MAX_SUPPORT][4] = {
84: { acceptClients, closeClient, rxPacket, txPacket }, /* SOCK_STREAM */
85: { acceptClients, closeClient, rxPacket, txPacket }, /* SOCK_STREAM */
86: { rxUDPPacket, freeClient, NULL /*rxUDPPacket*/, txUDPPacket }, /* SOCK_DGRAM */
87: { rxRAWPacket, freeClient, NULL /*rxRAWPacket*/, txRAWPacket }, /* SOCK_RAW */
88: { rxBPFPacket, freeClient, NULL /*rxBPFPacket*/, txBPFPacket }, /* SOCK_BPF */
89: { rxEXTPacket, freeClient, NULL /*rxEXTPacket*/, txEXTPacket } /* SOCK_EXT */
90: };
91: #endif
92: #else
93: static sched_task_func_t cbProto[SOCK_MAX_SUPPORT][4] = {
94: { acceptClients, closeClient, rxPacket, txPacket }, /* SOCK_STREAM */
95: { acceptClients, closeClient, rxPacket, txPacket }, /* SOCK_STREAM */
96: { rxUDPPacket, freeClient, NULL /*rxUDPPacket*/, txUDPPacket }, /* SOCK_DGRAM */
97: { rxRAWPacket, freeClient, NULL /*rxRAWPacket*/, txRAWPacket }, /* SOCK_RAW */
98: { rxBPFPacket, freeClient, NULL /*rxBPFPacket*/, txBPFPacket }, /* SOCK_BPF */
99: { rxEXTPacket, freeClient, NULL /*rxEXTPacket*/, txEXTPacket } /* SOCK_EXT */
100: };
101: #endif
102:
103: /* Global Signal Argument when kqueue support disabled */
104:
105: static volatile uintptr_t _glSigArg = 0;
106:
107: void
108: rpc_freeCli(rpc_cli_t * __restrict c)
109: {
110: rpc_srv_t *s = c->cli_parent;
111:
112: if (s->srv_proto == SOCK_STREAM)
113: schedCancelby(s->srv_root, taskMAX, CRITERIA_ARG, c, NULL);
114:
115: /* free buffer */
116: AIT_FREE_VAL(&c->cli_buf);
117:
118: array_Del(s->srv_clients, c->cli_id, 0);
119: if (c)
120: e_free(c);
121: }
122:
123:
124: static inline int
125: _check4freeslot(rpc_srv_t * __restrict srv, sockaddr_t * __restrict sa)
126: {
127: rpc_cli_t *c = NULL;
128: register int i;
129:
130: /* check free slots for connect */
131: for (i = 0; i < array_Size(srv->srv_clients) &&
132: (c = array(srv->srv_clients, i, rpc_cli_t*)); i++)
133: /* check for duplicates */
134: if (sa && !e_addrcmp(&c->cli_sa, sa, 42))
135: break;
136: if (i >= array_Size(srv->srv_clients))
137: return -1; /* no more free slots! */
138:
139: return i;
140: }
141:
142: static rpc_cli_t *
143: _allocClient(rpc_srv_t * __restrict srv, sockaddr_t * __restrict sa)
144: {
145: rpc_cli_t *c = NULL;
146: int n;
147:
148: if (srv->srv_proto != SOCK_EXT)
149: n = _check4freeslot(srv, sa);
150: else
151: n = 0;
152: if (n == -1)
153: return NULL;
154: else
155: c = array(srv->srv_clients, n, rpc_cli_t*);
156:
157: if (!c) {
158: c = e_malloc(sizeof(rpc_cli_t));
159: if (!c) {
160: LOGERR;
161: srv->srv_kill = 1;
162: return NULL;
163: } else {
164: memset(c, 0, sizeof(rpc_cli_t));
165: array_Set(srv->srv_clients, n, c);
166: c->cli_id = n;
167: c->cli_parent = srv;
168: }
169:
170: /* alloc empty buffer */
171: AIT_SET_BUFSIZ(&c->cli_buf, 0, srv->srv_netbuf);
172: if (!AIT_GET_BUF(&c->cli_buf)) {
173: array_Del(srv->srv_clients, n, 0);
174: e_free(c);
175: c = NULL;
176: }
177: }
178:
179: return c;
180: }
181:
182:
183: static void *
184: freeClient(sched_task_t *task)
185: {
186: rpc_freeCli(TASK_ARG(task));
187:
188: taskExit(task, NULL);
189: }
190:
191: static void *
192: closeClient(sched_task_t *task)
193: {
194: int sock = ((rpc_cli_t*) TASK_ARG(task))->cli_sock;
195:
196: rpc_freeCli(TASK_ARG(task));
197:
198: /* close client socket */
199: shutdown(sock, SHUT_RDWR);
200: close(sock);
201: taskExit(task, NULL);
202: }
203:
204: static void *
205: txPacket(sched_task_t *task)
206: {
207: rpc_cli_t *c = TASK_ARG(task);
208: rpc_srv_t *s = c->cli_parent;
209: rpc_func_t *f = NULL;
210: u_char *buf = AIT_GET_BUF(&c->cli_buf);
211: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
212: int ret, wlen = sizeof(struct tagRPCCall);
213: #ifdef TCP_SESSION_TIMEOUT
214: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
215:
216: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
217: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
218: TASK_ARG(task), ts, TASK_ARG(task), 0);
219: #endif
220:
221: if (rpc->call_argc) {
222: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
223: if (!f) {
224: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
225:
226: rpc->call_argc ^= rpc->call_argc;
227: RPC_SET_RETURN(rpc, -1);
228: RPC_SET_ERRNO(rpc, rpc_Errno);
229: } else if (rpc_pktFreeSpace(c) > s->srv_netbuf) {
230: rpc_SetErr(EMSGSIZE, "Message too long");
231:
232: rpc->call_argc ^= rpc->call_argc;
233: RPC_SET_RETURN(rpc, -1);
234: RPC_SET_ERRNO(rpc, rpc_Errno);
235: } else {
236: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
237: /* Go Encapsulate variables */
238: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
239: RPC_RETVARS(c));
240: if (ret == -1) {
241: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
242:
243: rpc->call_argc ^= rpc->call_argc;
244: RPC_SET_RETURN(rpc, -1);
245: RPC_SET_ERRNO(rpc, rpc_Errno);
246: } else
247: wlen += ret;
248: }
249: }
250:
251: /* Free return values */
252: ait_freeVars(&c->cli_vars);
253:
254: rpc->call_len = htonl(wlen);
255: rpc->call_io = RPC_ACK;
256:
257: #if 0
258: /* calculate CRC */
259: rpc->call_crc ^= rpc->call_crc;
260: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
261: #endif
262:
263: /* send reply */
264: ret = send(TASK_FD(task), buf, wlen, MSG_NOSIGNAL);
265: if (ret == -1) {
266: /* close connection */
267: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
268: TASK_ARG(task), 0, NULL, 0);
269: }
270:
271: taskExit(task, NULL);
272: }
273:
274: static void *
275: execCall(sched_task_t *task)
276: {
277: rpc_cli_t *c = TASK_ARG(task);
278: rpc_srv_t *s = c->cli_parent;
279: rpc_func_t *f = NULL;
280: array_t *arr = NULL;
281: u_char *buf = AIT_GET_BUF(&c->cli_buf);
282: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
283: int argc = rpc->call_argc;
284:
285: /* Go decapsulate variables ... */
286: if (argc) {
287: arr = ait_buffer2vars(buf + sizeof(struct tagRPCCall),
288: AIT_LEN(&c->cli_buf) - sizeof(struct tagRPCCall), argc, 42);
289: if (!arr) {
290: rpc_SetErr(ERPCMISMATCH, "#%d - %s", elwix_GetErrno(), elwix_GetError());
291:
292: rpc->call_argc ^= rpc->call_argc;
293: RPC_SET_RETURN(rpc, -1);
294: RPC_SET_ERRNO(rpc, rpc_Errno);
295: taskExit(task, NULL);
296: }
297: } else
298: arr = NULL;
299:
300: if (!(f = rpc_srv_getCall(s, ntohs(rpc->call_tag)))) {
301: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
302:
303: rpc->call_argc ^= rpc->call_argc;
304: RPC_SET_RETURN(rpc, -1);
305: RPC_SET_ERRNO(rpc, rpc_Errno);
306: } else {
307: /* if client doesn't want reply */
308: RPC_SET_RETURN(rpc, rpc_srv_execCall(c, rpc, f->func_name, arr));
309: if (rpc->call_rep.ret == htonl(-1)) {
310: if (!rpc->call_rep.eno) {
311: LOGERR;
312: RPC_SET_ERRNO(rpc, rpc_Errno);
313: }
314: rpc->call_argc ^= rpc->call_argc;
315: ait_freeVars(&c->cli_vars);
316: } else {
317: rpc->call_rep.eno ^= rpc->call_rep.eno;
318: rpc->call_argc ^= rpc->call_argc;
319: if (TASK_VAL(task)) {
320: /* without reply */
321: ait_freeVars(&c->cli_vars);
322: } else if (rpc->call_io & RPC_REQ) {
323: /* reply */
324: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
325: }
326: }
327: }
328:
329: array_Destroy(&arr);
330: taskExit(task, NULL);
331: }
332:
333: static void *
334: rxPacket(sched_task_t *task)
335: {
336: rpc_cli_t *c = TASK_ARG(task);
337: rpc_srv_t *s = c->cli_parent;
338: int len, noreply = 0, rlen;
339: #if 0
340: u_short crc;
341: #endif
342: u_char *buf = AIT_GET_BUF(&c->cli_buf);
343: struct tagRPCCall b, *rpc = (struct tagRPCCall*) buf;
344: #ifdef TCP_SESSION_TIMEOUT
345: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
346:
347: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
348: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
349: TASK_ARG(task), ts, TASK_ARG(task), 0);
350: #endif
351:
352: /* prepare rx */
353: len = recv(TASK_FD(task), &b, sizeof b, MSG_PEEK);
354: if (len < 1) {
355: /* close connection */
356: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
357: TASK_ARG(task), 0, NULL, 0);
358: taskExit(task, NULL);
359: } else if (len == sizeof b)
360: rlen = ntohl(b.call_len);
361: else
362: goto end;
363:
364: rlen = recv(TASK_FD(task), buf, rlen, 0);
365: if (rlen == -1) {
366: /* close connection */
367: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
368: TASK_ARG(task), 0, NULL, 0);
369: taskExit(task, NULL);
370: }
371: if (rlen < sizeof(struct tagRPCCall)) {
372: rpc_SetErr(ERPCMISMATCH, "Short RPC packet");
373:
374: rpc->call_argc ^= rpc->call_argc;
375: RPC_SET_RETURN(rpc, -1);
376: RPC_SET_ERRNO(rpc, rpc_Errno);
377: goto err;
378: } else
379: len = ntohl(rpc->call_len);
380: if (rlen < len || len > AIT_LEN(&c->cli_buf)) {
381: rpc_SetErr(ERPCMISMATCH, "Short RPC packet");
382:
383: rpc->call_argc ^= rpc->call_argc;
384: RPC_SET_RETURN(rpc, -1);
385: RPC_SET_ERRNO(rpc, rpc_Errno);
386: goto err;
387: }
388:
389: /* skip loop packet */
390: if (rpc->call_io & RPC_ACK) {
391: schedReadSelf(task);
392: taskExit(task, NULL);
393: }
394:
395: #if 0
396: /* check integrity of packet */
397: crc = ntohs(rpc->call_crc);
398: rpc->call_crc ^= rpc->call_crc;
399: if (crc != crcFletcher16((u_short*) rpc, len / 2)) {
400: rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet");
401:
402: rpc->call_argc ^= rpc->call_argc;
403: RPC_SET_RETURN(rpc, -1);
404: RPC_SET_ERRNO(rpc, rpc_Errno);
405: goto err;
406: }
407: #endif
408:
409: /* check RPC packet session info */
410: if (rpc_chkPktSession(&rpc->call_session, &s->srv_session)) {
411: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
412:
413: rpc->call_argc ^= rpc->call_argc;
414: RPC_SET_RETURN(rpc, -1);
415: RPC_SET_ERRNO(rpc, rpc_Errno);
416: goto err;
417: }
418:
419: noreply = RPC_CHK_NOREPLY(rpc);
420:
421: /* execute RPC call */
422: schedEvent(TASK_ROOT(task), execCall, TASK_ARG(task), (int) noreply, rpc, len);
423: err:
424: /* send RPC reply */
425: if (!noreply && (rpc->call_io & RPC_REQ))
426: schedWrite(TASK_ROOT(task), cbProto[s->srv_proto][CB_TXPACKET],
427: TASK_ARG(task), TASK_FD(task), rpc, len);
428: end:
429: /* lets get next packet */
430: schedReadSelf(task);
431: taskExit(task, NULL);
432: }
433:
434: static void *
435: acceptClients(sched_task_t *task)
436: {
437: rpc_srv_t *srv = TASK_ARG(task);
438: rpc_cli_t *c = NULL;
439: socklen_t salen = E_SOCKADDR_MAX;
440: int sock;
441: #ifdef TCP_SESSION_TIMEOUT
442: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
443: #endif
444:
445: c = _allocClient(srv, NULL);
446: if (!c) {
447: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
448: if ((sock = accept(TASK_FD(task), NULL, NULL)) != -1) {
449: shutdown(sock, SHUT_RDWR);
450: close(sock);
451: }
452: goto end;
453: }
454:
455: /* accept client */
456: c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen);
457: if (c->cli_sock == -1) {
458: LOGERR;
459: AIT_FREE_VAL(&c->cli_buf);
460: array_Del(srv->srv_clients, c->cli_id, 42);
461: goto end;
462: } else {
463: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
464: fcntl(c->cli_sock, F_SETFD, FD_CLOEXEC);
465: }
466:
467: #ifdef TCP_SESSION_TIMEOUT
468: /* armed timer for close stateless connection */
469: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
470: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT], c,
471: ts, c, 0);
472: #endif
473: schedRead(TASK_ROOT(task), cbProto[srv->srv_proto][CB_RXPACKET], c,
474: c->cli_sock, NULL, 0);
475: end:
476: schedReadSelf(task);
477: taskExit(task, NULL);
478: }
479:
480:
481: static void *
482: txUDPPacket(sched_task_t *task)
483: {
484: rpc_cli_t *c = TASK_ARG(task);
485: rpc_srv_t *s = c->cli_parent;
486: rpc_func_t *f = NULL;
487: u_char *buf = AIT_GET_BUF(&c->cli_buf);
488: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
489: int ret, wlen = sizeof(struct tagRPCCall);
490: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
491:
492: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
493: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
494: TASK_ARG(task), ts, TASK_ARG(task), 0);
495:
496: if (rpc->call_argc) {
497: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
498: if (!f) {
499: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
500:
501: rpc->call_argc ^= rpc->call_argc;
502: RPC_SET_RETURN(rpc, -1);
503: RPC_SET_ERRNO(rpc, rpc_Errno);
504: } else if (rpc_pktFreeSpace(c) > s->srv_netbuf) {
505: rpc_SetErr(EMSGSIZE, "Message too long");
506:
507: rpc->call_argc ^= rpc->call_argc;
508: RPC_SET_RETURN(rpc, -1);
509: RPC_SET_ERRNO(rpc, rpc_Errno);
510: } else {
511: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
512: /* Go Encapsulate variables */
513: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
514: RPC_RETVARS(c));
515: if (ret == -1) {
516: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
517:
518: rpc->call_argc ^= rpc->call_argc;
519: RPC_SET_RETURN(rpc, -1);
520: RPC_SET_ERRNO(rpc, rpc_Errno);
521: } else
522: wlen += ret;
523: }
524: }
525:
526: /* Free return values */
527: ait_freeVars(&c->cli_vars);
528:
529: rpc->call_len = htonl(wlen);
530: rpc->call_io = RPC_ACK;
531:
532: /* calculate CRC */
533: rpc->call_crc ^= rpc->call_crc;
534: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
535:
536: /* send reply */
537: ret = sendto(TASK_FD(task), buf, wlen, MSG_NOSIGNAL,
538: &c->cli_sa.sa, e_addrlen(&c->cli_sa));
539: if (ret == -1) {
540: /* close connection */
541: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
542: TASK_ARG(task), 0, NULL, 0);
543: }
544:
545: taskExit(task, NULL);
546: }
547:
548: static void *
549: rxUDPPacket(sched_task_t *task)
550: {
551: rpc_srv_t *srv = TASK_ARG(task);
552: rpc_cli_t *c = NULL;
553: int len, noreply = 0, rlen;
554: u_short crc;
555: struct tagRPCCall *rpc;
556: sockaddr_t sa;
557: socklen_t salen = E_SOCKADDR_MAX;
558: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
559: ait_val_t b = AIT_VAL_INIT;
560:
561: /* receive connect packet */
562: AIT_SET_BUF(&b, NULL, srv->srv_netbuf);
563: #ifndef __linux__
564: sa.ss.ss_len = salen;
565: #endif
566: rlen = recvfrom(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b), 0, &sa.sa, &salen);
567: rpc = (struct tagRPCCall*) AIT_GET_BUF(&b);
568: if (!rpc || rlen < sizeof(struct tagRPCCall))
569: goto end;
570: else
571: len = ntohl(rpc->call_len);
572: if (rlen < len || len > srv->srv_netbuf)
573: goto end;
574:
575: /* skip loop packet */
576: if (rpc->call_io & RPC_ACK)
577: goto end;
578:
579: /* check integrity of packet */
580: crc = ntohs(rpc->call_crc);
581: rpc->call_crc ^= rpc->call_crc;
582: if (crc != crcFletcher16((u_short*) AIT_GET_BUF(&b), len / 2))
583: goto end;
584:
585: /* check RPC packet session info */
586: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session))
587: goto end;
588:
589: c = _allocClient(srv, &sa);
590: if (!c) {
591: EVERBOSE(1, "RPC client quota exceeded!");
592: usleep(2000); /* blocked client delay */
593: goto end;
594: } else {
595: memcpy(AIT_GET_BUF(&c->cli_buf), AIT_GET_BUF(&b), len);
596: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
597:
598: c->cli_sock = TASK_FD(task);
599: memcpy(&c->cli_sa, &sa, sizeof c->cli_sa);
600:
601: /* armed timer for close stateless connection */
602: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
603: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
604: c, ts, c, 0);
605: }
606:
607: noreply = RPC_CHK_NOREPLY(rpc);
608:
609: /* execute RPC call */
610: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
611:
612: /* send RPC reply */
613: if (!noreply && (rpc->call_io & RPC_REQ))
614: schedWrite(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
615: c, TASK_FD(task), rpc, len);
616: end:
617: AIT_FREE_VAL(&b);
618: schedReadSelf(task);
619: taskExit(task, NULL);
620: }
621:
622:
623: static void *
624: txRAWPacket(sched_task_t *task)
625: {
626: rpc_cli_t *c = TASK_ARG(task);
627: rpc_srv_t *s = c->cli_parent;
628: rpc_func_t *f = NULL;
629: u_char *buf = AIT_GET_BUF(&c->cli_buf);
630: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
631: int ret, wlen = sizeof(struct tagRPCCall);
632: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
633:
634: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
635: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
636: TASK_ARG(task), ts, TASK_ARG(task), 0);
637:
638: if (rpc->call_argc) {
639: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
640: if (!f) {
641: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
642:
643: rpc->call_argc ^= rpc->call_argc;
644: RPC_SET_RETURN(rpc, -1);
645: RPC_SET_ERRNO(rpc, rpc_Errno);
646: } else if (rpc_pktFreeSpace(c) > s->srv_netbuf) {
647: rpc_SetErr(EMSGSIZE, "Message too long");
648:
649: rpc->call_argc ^= rpc->call_argc;
650: RPC_SET_RETURN(rpc, -1);
651: RPC_SET_ERRNO(rpc, rpc_Errno);
652: } else {
653: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
654: /* Go Encapsulate variables */
655: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
656: RPC_RETVARS(c));
657: if (ret == -1) {
658: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
659:
660: rpc->call_argc ^= rpc->call_argc;
661: RPC_SET_RETURN(rpc, -1);
662: RPC_SET_ERRNO(rpc, rpc_Errno);
663: } else
664: wlen += ret;
665: }
666: }
667:
668: /* Free return values */
669: ait_freeVars(&c->cli_vars);
670:
671: rpc->call_len = htonl(wlen);
672: rpc->call_io = RPC_ACK;
673:
674: /* calculate CRC */
675: rpc->call_crc ^= rpc->call_crc;
676: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
677:
678: /* send reply */
679: ret = sendto(TASK_FD(task), buf, wlen, MSG_NOSIGNAL,
680: &c->cli_sa.sa, e_addrlen(&c->cli_sa));
681: if (ret == -1) {
682: /* close connection */
683: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
684: TASK_ARG(task), 0, NULL, 0);
685: }
686:
687: taskExit(task, NULL);
688: }
689:
690: static void *
691: rxRAWPacket(sched_task_t *task)
692: {
693: rpc_srv_t *srv = TASK_ARG(task);
694: rpc_cli_t *c = NULL;
695: int len, noreply = 0, rlen;
696: u_short crc;
697: struct tagRPCCall *rpc;
698: sockaddr_t sa;
699: socklen_t salen = E_SOCKADDR_MAX;
700: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
701: ait_val_t b = AIT_VAL_INIT;
702:
703: /* receive connect packet */
704: AIT_SET_BUF(&b, NULL, srv->srv_netbuf);
705: #ifndef __linux__
706: sa.ss.ss_len = salen;
707: #endif
708: rlen = recvfrom(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b), 0, &sa.sa, &salen);
709: if (sa.sa.sa_family == AF_INET) {
710: struct ip *h;
711: h = (struct ip*) AIT_GET_BUF(&b);
712: if (!h || rlen < ntohs(h->ip_len) || h->ip_p != IPPROTO_ERPC)
713: goto end;
714: else {
715: rlen -= sizeof(struct ip);
716: rpc = (struct tagRPCCall*) (h + 1);
717: }
718: } else {
719: #ifdef IPV6_REMOVE_HEADER
720: struct ip6_hdr *h;
721: h = (struct ip6_hdr*) AIT_GET_BUF(&b);
722: if (!h || rlen < ntohs(h->ip6_plen) || h->ip6_nxt != IPPROTO_ERPC)
723: goto end;
724: else {
725: rlen -= sizeof(struct ip6_hdr);
726: rpc = (struct tagRPCCall*) (h + 1);
727: }
728: #else
729: rpc = (struct tagRPCCall*) AIT_GET_BUF(&b);
730: #endif
731: }
732: if (!rpc || rlen < sizeof(struct tagRPCCall))
733: goto end;
734: else
735: len = ntohl(rpc->call_len);
736: if (rlen < len || len > srv->srv_netbuf)
737: goto end;
738:
739: /* skip loop packet */
740: if (rpc->call_io & RPC_ACK)
741: goto end;
742:
743: /* check integrity of packet */
744: crc = ntohs(rpc->call_crc);
745: rpc->call_crc ^= rpc->call_crc;
746: if (crc != crcFletcher16((u_short*) AIT_GET_BUF(&b), len / 2))
747: goto end;
748:
749: /* check RPC packet session info */
750: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session))
751: goto end;
752:
753: c = _allocClient(srv, &sa);
754: if (!c) {
755: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
756: usleep(2000); /* blocked client delay */
757: goto end;
758: } else {
759: memcpy(AIT_GET_BUF(&c->cli_buf), rpc, len);
760: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
761:
762: c->cli_sock = TASK_FD(task);
763: memcpy(&c->cli_sa, &sa, sizeof c->cli_sa);
764:
765: /* armed timer for close stateless connection */
766: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
767: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
768: c, ts, c, 0);
769: }
770:
771: noreply = RPC_CHK_NOREPLY(rpc);
772:
773: /* execute RPC call */
774: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
775:
776: /* send RPC reply */
777: if (!noreply && (rpc->call_io & RPC_REQ))
778: schedWrite(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
779: c, TASK_FD(task), rpc, len);
780: end:
781: AIT_FREE_VAL(&b);
782: schedReadSelf(task);
783: taskExit(task, NULL);
784: }
785:
786:
787: static void *
788: txBPFPacket(sched_task_t *task)
789: {
790: #ifndef __linux__
791: rpc_cli_t *c = TASK_ARG(task);
792: rpc_srv_t *s = c->cli_parent;
793: rpc_func_t *f = NULL;
794: u_char *buf = AIT_GET_BUF(&c->cli_buf);
795: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
796: int ret, wlen = sizeof(struct tagRPCCall);
797: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
798: struct ether_header *eh;
799: ait_val_t b = AIT_VAL_INIT;
800:
801: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
802: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
803: TASK_ARG(task), ts, TASK_ARG(task), 0);
804:
805: if (rpc->call_argc) {
806: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
807: if (!f) {
808: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
809:
810: rpc->call_argc ^= rpc->call_argc;
811: RPC_SET_RETURN(rpc, -1);
812: RPC_SET_ERRNO(rpc, rpc_Errno);
813: } else if (rpc_pktFreeSpace(c) > s->srv_netbuf) {
814: rpc_SetErr(EMSGSIZE, "Message too long");
815:
816: rpc->call_argc ^= rpc->call_argc;
817: RPC_SET_RETURN(rpc, -1);
818: RPC_SET_ERRNO(rpc, rpc_Errno);
819: } else {
820: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
821: /* Go Encapsulate variables */
822: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
823: RPC_RETVARS(c));
824: if (ret == -1) {
825: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
826:
827: rpc->call_argc ^= rpc->call_argc;
828: RPC_SET_RETURN(rpc, -1);
829: RPC_SET_ERRNO(rpc, rpc_Errno);
830: } else
831: wlen += ret;
832: }
833: }
834:
835: /* Free return values */
836: ait_freeVars(&RPC_RETVARS(c));
837:
838: rpc->call_len = htonl(wlen);
839: rpc->call_io = RPC_ACK;
840:
841: /* calculate CRC */
842: rpc->call_crc ^= rpc->call_crc;
843: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
844:
845: /* send reply */
846: AIT_SET_BUF(&b, NULL, wlen + ETHER_HDR_LEN);
847: eh = (struct ether_header*) AIT_GET_BUF(&b);
848: memcpy(eh->ether_dhost, LLADDR(&c->cli_sa.sdl), ETHER_ADDR_LEN);
849: eh->ether_type = htons(RPC_DEFPORT);
850: memcpy(eh + 1, buf, wlen);
851:
852: ret = write(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b));
853: AIT_FREE_VAL(&b);
854: if (ret == -1) {
855: /* close connection */
856: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
857: TASK_ARG(task), 0, NULL, 0);
858: }
859: #else
860: rpc_SetErr(ENOTSUP, "Feature isn't supported on Linux!");
861: #endif
862:
863: taskExit(task, NULL);
864: }
865:
866: static void *
867: rxBPFPacket(sched_task_t *task)
868: {
869: #ifndef __linux__
870: rpc_srv_t *srv = TASK_ARG(task);
871: rpc_cli_t *c = NULL;
872: int len, rlen, noreply;
873: u_short crc;
874: struct tagRPCCall *rpc;
875: sockaddr_t sa;
876: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
877: struct bpf_hdr *h;
878: struct ether_header *eh;
879: ait_val_t b = AIT_VAL_INIT;
880:
881: /* receive connect packet */
882: AIT_SET_BUF(&b, NULL, srv->srv_netbuf);
883: rlen = read(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b));
884: h = (struct bpf_hdr*) AIT_GET_BUF(&b);
885: rlen -= h->bh_hdrlen;
886: if (rlen < h->bh_datalen || h->bh_caplen != h->bh_datalen ||
887: rlen < ETHER_HDR_LEN + sizeof(struct tagRPCCall))
888: goto end;
889: else {
890: rlen = h->bh_caplen;
891: eh = (struct ether_header*) (AIT_GET_BUF(&b) + h->bh_hdrlen);
892: rlen -= ETHER_HDR_LEN;
893: rpc = (struct tagRPCCall*) (eh + 1);
894:
895: if (eh->ether_type != ntohs(RPC_DEFPORT))
896: goto end;
897: else
898: e_getlinkbymac((const ether_addr_t*) eh->ether_shost, &sa);
899: }
900: if (rlen < sizeof(struct tagRPCCall))
901: goto end;
902: else
903: len = ntohl(rpc->call_len);
904: if (rlen < len || len > srv->srv_netbuf)
905: goto end;
906:
907: #ifdef CHECK_ETHACK
908: /* skip loop packet */
909: if (rpc->call_io & RPC_ACK)
910: goto end;
911: #endif
912:
913: /* check integrity of packet */
914: crc = ntohs(rpc->call_crc);
915: rpc->call_crc ^= rpc->call_crc;
916: if (crc != crcFletcher16((u_short*) rpc, len / 2))
917: goto end;
918:
919: /* check RPC packet session info */
920: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session))
921: goto end;
922:
923: c = _allocClient(srv, &sa);
924: if (!c) {
925: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
926: usleep(2000); /* blocked client delay */
927: goto end;
928: } else {
929: memcpy(AIT_GET_BUF(&c->cli_buf), rpc, len);
930: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
931:
932: c->cli_sock = TASK_FD(task);
933: memcpy(&c->cli_sa, &sa, sizeof c->cli_sa);
934:
935: /* armed timer for close stateless connection */
936: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
937: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
938: c, ts, c, 0);
939: }
940:
941: noreply = RPC_CHK_NOREPLY(rpc);
942:
943: /* execute RPC call */
944: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
945:
946: /* send RPC reply */
947: if (!noreply && (rpc->call_io & RPC_REQ))
948: schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
949: c, TASK_FD(task), rpc, len);
950: end:
951: AIT_FREE_VAL(&b);
952: schedReadSelf(task);
953: #else
954: rpc_SetErr(ENOTSUP, "Feature isn't supported on Linux!");
955: #endif
956:
957: taskExit(task, NULL);
958: }
959:
960:
961: static void *
962: txEXTPacket(sched_task_t *task)
963: {
964: rpc_cli_t *c = TASK_ARG(task);
965: rpc_srv_t *s = c->cli_parent;
966: rpc_func_t *f = NULL;
967: u_char *buf = AIT_GET_BUF(&c->cli_buf);
968: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
969: int ret, wlen = sizeof(struct tagRPCCall);
970: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
971:
972: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
973: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
974: TASK_ARG(task), ts, TASK_ARG(task), 0);
975:
976: if (rpc->call_argc) {
977: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
978: if (!f) {
979: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
980:
981: rpc->call_argc ^= rpc->call_argc;
982: RPC_SET_RETURN(rpc, -1);
983: RPC_SET_ERRNO(rpc, rpc_Errno);
984: } else if (rpc_pktFreeSpace(c) > s->srv_netbuf) {
985: rpc_SetErr(EMSGSIZE, "Message too long");
986:
987: rpc->call_argc ^= rpc->call_argc;
988: RPC_SET_RETURN(rpc, -1);
989: RPC_SET_ERRNO(rpc, rpc_Errno);
990: } else {
991: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
992: /* Go Encapsulate variables */
993: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
994: RPC_RETVARS(c));
995: if (ret == -1) {
996: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
997:
998: rpc->call_argc ^= rpc->call_argc;
999: RPC_SET_RETURN(rpc, -1);
1000: RPC_SET_ERRNO(rpc, rpc_Errno);
1001: } else
1002: wlen += ret;
1003: }
1004: }
1005:
1006: /* Free return values */
1007: ait_freeVars(&RPC_RETVARS(c));
1008:
1009: rpc->call_len = htonl(wlen);
1010: rpc->call_io = RPC_ACK;
1011:
1012: /* send reply */
1013: ret = write(TASK_FD(task), buf, wlen);
1014: if (ret == -1) {
1015: /* close connection */
1016: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
1017: TASK_ARG(task), 0, NULL, 0);
1018: }
1019:
1020: taskExit(task, NULL);
1021: }
1022:
1023: static void *
1024: rxEXTPacket(sched_task_t *task)
1025: {
1026: rpc_srv_t *srv = TASK_ARG(task);
1027: rpc_cli_t *c = NULL;
1028: int len, noreply = 0, rlen;
1029: struct tagRPCCall *rpc;
1030: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
1031: sockaddr_t sa;
1032: ait_val_t b = AIT_VAL_INIT;
1033:
1034: memset(&sa, 0, sizeof sa);
1035: /* receive connect packet */
1036: AIT_SET_BUF(&b, NULL, srv->srv_netbuf);
1037: rlen = read(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b));
1038: rpc = (struct tagRPCCall*) AIT_GET_BUF(&b);
1039: if (!rpc || rlen < sizeof(struct tagRPCCall))
1040: goto end;
1041: else
1042: len = ntohl(rpc->call_len);
1043: if (rlen < len || len > srv->srv_netbuf)
1044: goto end;
1045:
1046: /* skip loop packet */
1047: if (rpc->call_io & RPC_ACK)
1048: goto end;
1049:
1050: /* check RPC packet session info */
1051: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session))
1052: goto end;
1053:
1054: c = _allocClient(srv, &sa);
1055: if (!c) {
1056: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
1057: usleep(2000); /* blocked client delay */
1058: goto end;
1059: } else {
1060: memcpy(AIT_GET_BUF(&c->cli_buf), AIT_GET_BUF(&b), len);
1061: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
1062:
1063: c->cli_sock = TASK_FD(task);
1064:
1065: /* armed timer for close stateless connection */
1066: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
1067: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
1068: c, ts, c, 0);
1069: }
1070:
1071: noreply = RPC_CHK_NOREPLY(rpc);
1072:
1073: /* execute RPC call */
1074: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
1075:
1076: /* send RPC reply */
1077: if (!noreply && (rpc->call_io & RPC_REQ))
1078: schedWrite(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
1079: c, TASK_FD(task), rpc, len);
1080: end:
1081: AIT_FREE_VAL(&b);
1082: schedReadSelf(task);
1083: taskExit(task, NULL);
1084: }
1085:
1086: /* ------------------------------------------------------ */
1087:
1088: void
1089: rpc_freeBLOBCli(rpc_cli_t * __restrict c)
1090: {
1091: rpc_srv_t *s = c->cli_parent;
1092:
1093: schedCancelby(s->srv_blob.root, taskMAX, CRITERIA_ARG, c, NULL);
1094:
1095: /* free buffer */
1096: AIT_FREE_VAL(&c->cli_buf);
1097:
1098: array_Del(s->srv_blob.clients, c->cli_id, 0);
1099: if (c)
1100: e_free(c);
1101: }
1102:
1103:
1104: static void *
1105: closeBLOBClient(sched_task_t *task)
1106: {
1107: int sock = ((rpc_cli_t*) TASK_ARG(task))->cli_sock;
1108:
1109: rpc_freeBLOBCli(TASK_ARG(task));
1110:
1111: /* close client socket */
1112: shutdown(sock, SHUT_RDWR);
1113: close(sock);
1114: taskExit(task, NULL);
1115: }
1116:
1117: static void *
1118: txBLOB(sched_task_t *task)
1119: {
1120: rpc_cli_t *c = TASK_ARG(task);
1121: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1122: int wlen = sizeof(struct tagBLOBHdr);
1123:
1124: /* send reply */
1125: wlen = send(TASK_FD(task), buf, wlen, MSG_NOSIGNAL);
1126: if (wlen == -1 || wlen != sizeof(struct tagBLOBHdr)) {
1127: /* close blob connection */
1128: schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0);
1129: }
1130:
1131: taskExit(task, NULL);
1132: }
1133:
1134: static void *
1135: rxBLOB(sched_task_t *task)
1136: {
1137: rpc_cli_t *c = TASK_ARG(task);
1138: rpc_srv_t *s = c->cli_parent;
1139: rpc_blob_t *b;
1140: struct tagBLOBHdr blob;
1141: int rlen;
1142:
1143: memset(&blob, 0, sizeof blob);
1144: rlen = recv(TASK_FD(task), &blob, sizeof blob, 0);
1145: if (rlen < 1) {
1146: /* close blob connection */
1147: schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0);
1148: taskExit(task, NULL);
1149: }
1150:
1151: /* check BLOB packet */
1152: if (rlen < sizeof(struct tagBLOBHdr)) {
1153: rpc_SetErr(ERPCMISMATCH, "Short BLOB packet");
1154:
1155: schedReadSelf(task);
1156: taskExit(task, NULL);
1157: }
1158:
1159: /* check RPC packet session info */
1160: if (rpc_chkPktSession(&blob.hdr_session, &s->srv_session)) {
1161: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
1162: blob.hdr_cmd = error;
1163: goto end;
1164: }
1165:
1166: /* Go to proceed packet ... */
1167: switch (blob.hdr_cmd) {
1168: case get:
1169: if (!(b = rpc_srv_getBLOB(s, ntohl(blob.hdr_var)))) {
1170: rpc_SetErr(EINVAL, "Var=%x not found", ntohl(blob.hdr_var));
1171: blob.hdr_cmd = no;
1172: RPC_SET_BLOB_RET(&blob, -1);
1173: break;
1174: } else
1175: blob.hdr_len = htonl(b->blob_len);
1176:
1177: if (rpc_srv_blobMap(s, b) != -1) {
1178: /* deliver BLOB variable to client */
1179: blob.hdr_ret = htonl(rpc_srv_sendBLOB(c, b));
1180: rpc_srv_blobUnmap(b);
1181: } else {
1182: blob.hdr_cmd = error;
1183: RPC_SET_BLOB_RET(&blob, -1);
1184: }
1185: break;
1186: case set:
1187: if ((b = rpc_srv_registerBLOB(s, ntohl(blob.hdr_len),
1188: ntohl(blob.hdr_ret)))) {
1189: /* set new BLOB variable for reply :) */
1190: blob.hdr_var = htonl(b->blob_var);
1191:
1192: /* receive BLOB from client */
1193: blob.hdr_ret = htonl(rpc_srv_recvBLOB(c, b));
1194: rpc_srv_blobUnmap(b);
1195: } else {
1196: blob.hdr_cmd = error;
1197: RPC_SET_BLOB_RET(&blob, -1);
1198: }
1199: break;
1200: case unset:
1201: if (rpc_srv_unregisterBLOB(s, ntohl(blob.hdr_var)) == -1) {
1202: blob.hdr_cmd = error;
1203: RPC_SET_BLOB_RET(&blob, -1);
1204: }
1205: break;
1206: default:
1207: rpc_SetErr(EPROCUNAVAIL, "Unsupported BLOB command %d", blob.hdr_cmd);
1208: blob.hdr_cmd = error;
1209: RPC_SET_BLOB_RET(&blob, -1);
1210: }
1211:
1212: end:
1213: memcpy(AIT_ADDR(&c->cli_buf), &blob, sizeof blob);
1214: schedWrite(TASK_ROOT(task), txBLOB, TASK_ARG(task), TASK_FD(task), NULL, 0);
1215: schedReadSelf(task);
1216: taskExit(task, NULL);
1217: }
1218:
1219: static void *
1220: flushBLOB(sched_task_t *task)
1221: {
1222: #ifdef atomic_load_acq_ptr
1223: uintptr_t sigArg = atomic_load_acq_ptr(&_glSigArg);
1224: #else
1225: uintptr_t sigArg = *((volatile uintptr_t*) &_glSigArg);
1226: #endif
1227: rpc_srv_t *srv = sigArg ? (void*) sigArg : TASK_ARG(task);
1228: rpc_blob_t *b, *tmp;
1229:
1230: TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) {
1231: TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node);
1232:
1233: rpc_srv_blobFree(srv, b);
1234: e_free(b);
1235: }
1236:
1237: if (sigArg) {
1238: /* disabled kqueue support in libaitsched */
1239: struct sigaction sa;
1240:
1241: memset(&sa, 0, sizeof sa);
1242: sigemptyset(&sa.sa_mask);
1243: sa.sa_handler = (void (*)(int)) flushBLOB;
1244: sa.sa_flags = SA_RESTART | SA_RESETHAND;
1245: sigaction(SIGFBLOB, &sa, NULL);
1246: return NULL;
1247: } else {
1248: schedSignalSelf(task);
1249: taskExit(task, NULL);
1250: }
1251: }
1252:
1253: static void *
1254: acceptBLOBClients(sched_task_t *task)
1255: {
1256: rpc_srv_t *srv = TASK_ARG(task);
1257: rpc_cli_t *c = NULL;
1258: register int i;
1259: socklen_t salen = E_SOCKADDR_MAX;
1260: int sock;
1261: #ifdef TCP_NOPUSH
1262: int n = 1;
1263: #endif
1264:
1265: /* check free slots for connect */
1266: for (i = 0; i < array_Size(srv->srv_blob.clients) &&
1267: (c = array(srv->srv_blob.clients, i, rpc_cli_t*)); i++);
1268: if (c) { /* no more free slots! */
1269: EVERBOSE(1, "BLOB client quota exceeded! Connection will be shutdown!\n");
1270: if ((sock = accept(TASK_FD(task), NULL, NULL)) != -1) {
1271: shutdown(sock, SHUT_RDWR);
1272: close(sock);
1273: }
1274: goto end;
1275: }
1276:
1277: c = e_malloc(sizeof(rpc_cli_t));
1278: if (!c) {
1279: LOGERR;
1280: srv->srv_kill = srv->srv_blob.kill = 1;
1281: taskExit(task, NULL);
1282: } else {
1283: memset(c, 0, sizeof(rpc_cli_t));
1284: array_Set(srv->srv_blob.clients, i, c);
1285: c->cli_id = i;
1286: c->cli_parent = srv;
1287: }
1288:
1289: /* alloc empty buffer */
1290: AIT_SET_BUFSIZ(&c->cli_buf, 0, srv->srv_netbuf);
1291:
1292: /* accept client */
1293: c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen);
1294: if (c->cli_sock == -1) {
1295: LOGERR;
1296: AIT_FREE_VAL(&c->cli_buf);
1297: array_Del(srv->srv_blob.clients, i, 42);
1298: goto end;
1299: } else {
1300: #ifdef TCP_NOPUSH
1301: setsockopt(c->cli_sock, IPPROTO_TCP, TCP_NOPUSH, &n, sizeof n);
1302: #endif
1303: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
1304: fcntl(c->cli_sock, F_SETFD, FD_CLOEXEC);
1305: }
1306:
1307: schedRead(TASK_ROOT(task), rxBLOB, c, c->cli_sock, NULL, 0);
1308: end:
1309: schedReadSelf(task);
1310: taskExit(task, NULL);
1311: }
1312:
1313: /* ------------------------------------------------------ */
1314:
1315: /*
1316: * rpc_srv_initBLOBServer() - Init & create BLOB Server
1317: *
1318: * @srv = RPC server instance
1319: * @Port = Port for bind server, if Port == 0 default port is selected
1320: * @diskDir = Disk place for BLOB file objects
1321: * return: -1 == error or 0 bind and created BLOB server instance
1322: */
1323: int
1324: rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, u_short Port, const char *diskDir)
1325: {
1326: int n = 1;
1327: socklen_t salen;
1328:
1329: if (!srv || srv->srv_kill) {
1330: rpc_SetErr(EINVAL, "Invalid parameters can`t init BLOB server");
1331: return -1;
1332: }
1333:
1334: memset(&srv->srv_blob, 0, sizeof srv->srv_blob);
1335: if (access(diskDir, R_OK | W_OK) == -1) {
1336: LOGERR;
1337: return -1;
1338: } else
1339: AIT_SET_STR(&srv->srv_blob.dir, diskDir);
1340:
1341: /* init blob list */
1342: TAILQ_INIT(&srv->srv_blob.blobs);
1343:
1344: srv->srv_blob.server.cli_parent = srv;
1345:
1346: memcpy(&srv->srv_blob.server.cli_sa, &srv->srv_server.cli_sa, sizeof srv->srv_blob.server.cli_sa);
1347: switch (srv->srv_blob.server.cli_sa.sa.sa_family) {
1348: case AF_INET:
1349: srv->srv_blob.server.cli_sa.sin.sin_port =
1350: htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin.sin_port) + 1);
1351: salen = sizeof srv->srv_blob.server.cli_sa.sin;
1352: break;
1353: case AF_INET6:
1354: srv->srv_blob.server.cli_sa.sin6.sin6_port =
1355: htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin6.sin6_port) + 1);
1356: salen = sizeof srv->srv_blob.server.cli_sa.sin6;
1357: break;
1358: case AF_LOCAL:
1359: strlcat(srv->srv_blob.server.cli_sa.sun.sun_path, ".blob",
1360: sizeof srv->srv_blob.server.cli_sa.sun.sun_path);
1361: salen = sizeof srv->srv_blob.server.cli_sa.sun;
1362: break;
1363: default:
1364: AIT_FREE_VAL(&srv->srv_blob.dir);
1365: return -1;
1366: }
1367:
1368: /* create BLOB server socket */
1369: srv->srv_blob.server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, SOCK_STREAM, 0);
1370: if (srv->srv_blob.server.cli_sock == -1) {
1371: LOGERR;
1372: AIT_FREE_VAL(&srv->srv_blob.dir);
1373: return -1;
1374: }
1375: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
1376: LOGERR;
1377: close(srv->srv_blob.server.cli_sock);
1378: AIT_FREE_VAL(&srv->srv_blob.dir);
1379: return -1;
1380: }
1381: n = srv->srv_netbuf;
1382: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
1383: LOGERR;
1384: close(srv->srv_blob.server.cli_sock);
1385: AIT_FREE_VAL(&srv->srv_blob.dir);
1386: return -1;
1387: }
1388: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
1389: LOGERR;
1390: close(srv->srv_blob.server.cli_sock);
1391: AIT_FREE_VAL(&srv->srv_blob.dir);
1392: return -1;
1393: }
1394: if (bind(srv->srv_blob.server.cli_sock, &srv->srv_blob.server.cli_sa.sa, salen) == -1) {
1395: LOGERR;
1396: close(srv->srv_blob.server.cli_sock);
1397: AIT_FREE_VAL(&srv->srv_blob.dir);
1398: return -1;
1399: } else
1400: fcntl(srv->srv_blob.server.cli_sock, F_SETFL,
1401: fcntl(srv->srv_blob.server.cli_sock, F_GETFL) | O_NONBLOCK);
1402:
1403:
1404: /* allocate pool for concurent blob clients */
1405: srv->srv_blob.clients = array_Init(array_Size(srv->srv_clients));
1406: if (!srv->srv_blob.clients) {
1407: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1408: close(srv->srv_blob.server.cli_sock);
1409: AIT_FREE_VAL(&srv->srv_blob.dir);
1410: return -1;
1411: }
1412:
1413: /* init blob scheduler */
1414: srv->srv_blob.root = schedBegin();
1415: if (!srv->srv_blob.root) {
1416: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1417: array_Destroy(&srv->srv_blob.clients);
1418: close(srv->srv_blob.server.cli_sock);
1419: AIT_FREE_VAL(&srv->srv_blob.dir);
1420: return -1;
1421: }
1422:
1423: return 0;
1424: }
1425:
1426: /*
1427: * rpc_srv_endBLOBServer() - Destroy BLOB server, close all opened sockets and free resources
1428: *
1429: * @srv = RPC Server instance
1430: * return: none
1431: */
1432: void
1433: rpc_srv_endBLOBServer(rpc_srv_t * __restrict srv)
1434: {
1435: if (!srv)
1436: return;
1437:
1438: srv->srv_blob.kill = 1;
1439:
1440: if (srv->srv_blob.server.cli_sa.sa.sa_family == AF_LOCAL)
1441: unlink(srv->srv_blob.server.cli_sa.sun.sun_path);
1442:
1443: schedEnd(&srv->srv_blob.root);
1444: }
1445:
1446: /*
1447: * rpc_srv_loopBLOBServer() - Execute Main BLOB server loop and wait for clients requests
1448: *
1449: * @srv = RPC Server instance
1450: * return: -1 error or 0 ok, infinite loop ...
1451: */
1452: int
1453: rpc_srv_loopBLOBServer(rpc_srv_t * __restrict srv)
1454: {
1455: rpc_cli_t *c;
1456: register int i;
1457: rpc_blob_t *b, *tmp;
1458: struct timespec ts = { RPC_SCHED_POLLING, 0 };
1459:
1460: if (!srv || srv->srv_kill) {
1461: rpc_SetErr(EINVAL, "Invalid parameter can`t start BLOB server");
1462: return -1;
1463: }
1464:
1465: if (listen(srv->srv_blob.server.cli_sock, array_Size(srv->srv_blob.clients)) == -1) {
1466: LOGERR;
1467: return -1;
1468: }
1469:
1470: if (!schedSignal(srv->srv_blob.root, flushBLOB, srv, SIGFBLOB, NULL, 0)) {
1471: /* disabled kqueue support in libaitsched */
1472: struct sigaction sa;
1473:
1474: #ifdef atomic_store_rel_ptr
1475: atomic_store_rel_ptr(&_glSigArg, (uintptr_t) srv);
1476: #else
1477: *((volatile uintptr_t*) &_glSigArg) = (uintptr_t) srv;
1478: #endif
1479:
1480: memset(&sa, 0, sizeof sa);
1481: sigemptyset(&sa.sa_mask);
1482: sa.sa_handler = (void (*)(int)) flushBLOB;
1483: sa.sa_flags = SA_RESTART | SA_RESETHAND;
1484: sigaction(SIGFBLOB, &sa, NULL);
1485: }
1486:
1487: if (!schedRead(srv->srv_blob.root, acceptBLOBClients, srv,
1488: srv->srv_blob.server.cli_sock, NULL, 0)) {
1489: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1490: return -1;
1491: }
1492:
1493: schedPolling(srv->srv_blob.root, &ts, NULL);
1494: /* main rpc loop */
1495: schedRun(srv->srv_blob.root, &srv->srv_blob.kill);
1496:
1497: /* detach blobs */
1498: TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) {
1499: TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node);
1500:
1501: rpc_srv_blobFree(srv, b);
1502: e_free(b);
1503: }
1504:
1505: /* close all clients connections & server socket */
1506: for (i = 0; i < array_Size(srv->srv_blob.clients); i++) {
1507: c = array(srv->srv_blob.clients, i, rpc_cli_t*);
1508: if (c) {
1509: shutdown(c->cli_sock, SHUT_RDWR);
1510: close(c->cli_sock);
1511:
1512: schedCancelby(srv->srv_blob.root, taskMAX, CRITERIA_ARG, c, NULL);
1513: AIT_FREE_VAL(&c->cli_buf);
1514: }
1515: array_Del(srv->srv_blob.clients, i, 42);
1516: }
1517: array_Destroy(&srv->srv_blob.clients);
1518:
1519: close(srv->srv_blob.server.cli_sock);
1520:
1521: AIT_FREE_VAL(&srv->srv_blob.dir);
1522: return 0;
1523: }
1524:
1525:
1526: /*
1527: * rpc_srv_initServer() - Init & create RPC Server
1528: *
1529: * @InstID = Instance for authentication & recognition
1530: * @concurentClients = Concurent clients at same time to this server
1531: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
1532: * @csHost = Host name or address for bind server, if NULL any address
1533: * @Port = Port for bind server, if Port == 0 default port is selected
1534: * @proto = Protocol, if == 0 choose SOCK_STREAM
1535: * return: NULL == error or !=NULL bind and created RPC server instance
1536: */
1537: rpc_srv_t *
1538: rpc_srv_initServer(u_char InstID, int concurentClients, int netBuf,
1539: const char *csHost, u_short Port, int proto)
1540: {
1541: int n = 1;
1542: rpc_srv_t *srv = NULL;
1543: sockaddr_t sa = E_SOCKADDR_INIT;
1544: socklen_t salen;
1545:
1546: if (!concurentClients || (proto < 0 || proto > SOCK_RAW)) {
1547: rpc_SetErr(EINVAL, "Invalid parameters can`t init RPC server");
1548: return NULL;
1549: }
1550: if (!Port && proto < SOCK_RAW)
1551: Port = RPC_DEFPORT;
1552: if (!(salen = e_gethostbyname(csHost, Port, &sa)))
1553: return NULL;
1554: if (!proto)
1555: proto = SOCK_STREAM;
1556: if (netBuf < RPC_MIN_BUFSIZ)
1557: netBuf = BUFSIZ;
1558: else
1559: netBuf = E_ALIGN(netBuf, 2); /* align netBuf length */
1560:
1561: #ifdef HAVE_SRANDOMDEV
1562: srandomdev();
1563: #else
1564: time_t tim;
1565:
1566: srandom((time(&tim) ^ getpid()));
1567: #endif
1568:
1569: srv = e_malloc(sizeof(rpc_srv_t));
1570: if (!srv) {
1571: LOGERR;
1572: return NULL;
1573: } else
1574: memset(srv, 0, sizeof(rpc_srv_t));
1575:
1576: srv->srv_proto = proto;
1577: srv->srv_netbuf = netBuf;
1578: srv->srv_session.sess_version = RPC_VERSION;
1579: srv->srv_session.sess_instance = InstID;
1580:
1581: srv->srv_server.cli_parent = srv;
1582: memcpy(&srv->srv_server.cli_sa, &sa, sizeof srv->srv_server.cli_sa);
1583:
1584: /* init functions */
1585: pthread_mutex_init(&srv->srv_funcs.mtx, NULL);
1586: SLIST_INIT(&srv->srv_funcs);
1587: RB_INIT(&srv->srv_funcs);
1588:
1589: /* init scheduler */
1590: srv->srv_root = schedBegin();
1591: if (!srv->srv_root) {
1592: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1593: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1594: e_free(srv);
1595: return NULL;
1596: }
1597:
1598: /* init pool for clients */
1599: srv->srv_clients = array_Init(concurentClients);
1600: if (!srv->srv_clients) {
1601: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1602: schedEnd(&srv->srv_root);
1603: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1604: e_free(srv);
1605: return NULL;
1606: }
1607:
1608: /* create server socket */
1609: srv->srv_server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family,
1610: srv->srv_proto, srv->srv_proto == SOCK_RAW ? IPPROTO_ERPC : 0);
1611: if (srv->srv_server.cli_sock == -1) {
1612: LOGERR;
1613: array_Destroy(&srv->srv_clients);
1614: schedEnd(&srv->srv_root);
1615: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1616: e_free(srv);
1617: return NULL;
1618: }
1619: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
1620: LOGERR;
1621: goto err;
1622: }
1623: if (srv->srv_proto == SOCK_STREAM)
1624: setsockopt(srv->srv_server.cli_sock, IPPROTO_TCP, TCP_NODELAY, &n, sizeof n);
1625: n = srv->srv_netbuf;
1626: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
1627: LOGERR;
1628: goto err;
1629: }
1630: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
1631: LOGERR;
1632: goto err;
1633: }
1634: if (bind(srv->srv_server.cli_sock, &srv->srv_server.cli_sa.sa, salen) == -1) {
1635: LOGERR;
1636: goto err;
1637: } else
1638: fcntl(srv->srv_server.cli_sock, F_SETFL,
1639: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
1640:
1641: rpc_register_srvPing(srv);
1642:
1643: return srv;
1644: err: /* error condition */
1645: close(srv->srv_server.cli_sock);
1646: array_Destroy(&srv->srv_clients);
1647: schedEnd(&srv->srv_root);
1648: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1649: e_free(srv);
1650: return NULL;
1651: }
1652:
1653: /*
1654: * rpc_srv_endServer() - Destroy RPC server, close all opened sockets and free resources
1655: *
1656: * @psrv = RPC Server instance
1657: * return: none
1658: */
1659: void
1660: rpc_srv_endServer(rpc_srv_t ** __restrict psrv)
1661: {
1662: if (!psrv || !*psrv)
1663: return;
1664:
1665: /* if send kill to blob server */
1666: rpc_srv_endBLOBServer(*psrv);
1667: /* wait for BLOB server done */
1668: while (*(&(*psrv)->srv_blob.root))
1669: usleep(1000);
1670:
1671: (*psrv)->srv_kill = 1;
1672: sleep(RPC_SCHED_POLLING);
1673:
1674: if ((*psrv)->srv_server.cli_sa.sa.sa_family == AF_LOCAL)
1675: unlink((*psrv)->srv_server.cli_sa.sun.sun_path);
1676:
1677: schedEnd(&(*psrv)->srv_root);
1678:
1679: pthread_mutex_destroy(&(*psrv)->srv_funcs.mtx);
1680: e_free(*psrv);
1681: *psrv = NULL;
1682: }
1683:
1684: /*
1685: * rpc_srv_loopServer() - Execute Main server loop and wait for clients requests
1686: *
1687: * @srv = RPC Server instance
1688: * return: -1 error or 0 ok, infinite loop ...
1689: */
1690: int
1691: rpc_srv_loopServer(rpc_srv_t * __restrict srv)
1692: {
1693: rpc_cli_t *c;
1694: register int i;
1695: rpc_func_t *f;
1696: struct timespec ts = { RPC_SCHED_POLLING, 0 };
1697:
1698: if (!srv) {
1699: rpc_SetErr(EINVAL, "Invalid parameter can`t start RPC server");
1700: return -1;
1701: }
1702:
1703: if (srv->srv_proto == SOCK_STREAM)
1704: if (listen(srv->srv_server.cli_sock, array_Size(srv->srv_clients)) == -1) {
1705: LOGERR;
1706: return -1;
1707: }
1708:
1709: if (!schedRead(srv->srv_root, cbProto[srv->srv_proto][CB_ACCEPTCLIENT], srv,
1710: srv->srv_server.cli_sock, NULL, 0)) {
1711: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1712: return -1;
1713: }
1714:
1715: schedPolling(srv->srv_root, &ts, NULL);
1716: /* main rpc loop */
1717: schedRun(srv->srv_root, &srv->srv_kill);
1718:
1719: /* close all clients connections & server socket */
1720: for (i = 0; i < array_Size(srv->srv_clients); i++) {
1721: c = array(srv->srv_clients, i, rpc_cli_t*);
1722: if (c) {
1723: if (srv->srv_proto == SOCK_STREAM) {
1724: shutdown(c->cli_sock, SHUT_RDWR);
1725: close(c->cli_sock);
1726: }
1727:
1728: schedCancelby(srv->srv_root, taskMAX, CRITERIA_ARG, c, NULL);
1729: ait_freeVars(&RPC_RETVARS(c));
1730: AIT_FREE_VAL(&c->cli_buf);
1731: }
1732: array_Del(srv->srv_clients, i, 42);
1733: }
1734: array_Destroy(&srv->srv_clients);
1735:
1736: if (srv->srv_proto != SOCK_EXT)
1737: close(srv->srv_server.cli_sock);
1738:
1739: /* detach exported calls */
1740: RPC_FUNCS_LOCK(&srv->srv_funcs);
1741: while ((f = SLIST_FIRST(&srv->srv_funcs))) {
1742: SLIST_REMOVE_HEAD(&srv->srv_funcs, func_next);
1743:
1744: AIT_FREE_VAL(&f->func_name);
1745: e_free(f);
1746: }
1747: srv->srv_funcs.rbh_root = NULL;
1748: RPC_FUNCS_UNLOCK(&srv->srv_funcs);
1749:
1750: return 0;
1751: }
1752:
1753:
1754: /*
1755: * rpc_srv_execCall() Execute registered call from RPC server
1756: *
1757: * @cli = RPC client
1758: * @rpc = IN RPC call structure
1759: * @funcname = Execute RPC function
1760: * @args = IN RPC calling arguments from RPC client
1761: * return: -1 error, !=-1 ok
1762: */
1763: int
1764: rpc_srv_execCall(rpc_cli_t * __restrict cli, struct tagRPCCall * __restrict rpc,
1765: ait_val_t funcname, array_t * __restrict args)
1766: {
1767: rpc_callback_t func;
1768:
1769: if (!cli || !rpc || !AIT_ADDR(&funcname)) {
1770: rpc_SetErr(EINVAL, "Invalid parameter can`t exec function");
1771: return -1;
1772: }
1773:
1774: func = AIT_GET_LIKE(&funcname, rpc_callback_t);
1775: return func(cli, rpc, args);
1776: }
1777:
1778:
1779: /*
1780: * rpc_srv_initServer2() - Init & create layer2 RPC Server
1781: *
1782: * @InstID = Instance for authentication & recognition
1783: * @concurentClients = Concurent clients at same time to this server
1784: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
1785: * @csIface = Interface name for bind server, if NULL first interface on host
1786: * return: NULL == error or !=NULL bind and created RPC server instance
1787: */
1788: rpc_srv_t *
1789: rpc_srv_initServer2(u_char InstID, int concurentClients, int netBuf, const char *csIface)
1790: {
1791: #ifndef __linux__
1792: int n = 1;
1793: rpc_srv_t *srv = NULL;
1794: sockaddr_t sa = E_SOCKADDR_INIT;
1795: char szIface[64], szStr[STRSIZ];
1796: register int i;
1797: struct ifreq ifr;
1798: struct bpf_insn insns[] = {
1799: BPF_STMT(BPF_LD + BPF_H + BPF_ABS, 12),
1800: BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, RPC_DEFPORT, 0, 1),
1801: BPF_STMT(BPF_RET + BPF_K, -1),
1802: BPF_STMT(BPF_RET + BPF_K, 0),
1803: };
1804: struct bpf_program fcode = {
1805: .bf_len = sizeof(insns) / sizeof(struct bpf_insn),
1806: .bf_insns = insns
1807: };
1808:
1809: if (!concurentClients) {
1810: rpc_SetErr(EINVAL, "Invalid parameters can`t init RPC server");
1811: return NULL;
1812: }
1813: if (!csIface) {
1814: if (e_get1stiface(szIface, sizeof szIface))
1815: return NULL;
1816: } else
1817: strlcpy(szIface, csIface, sizeof szIface);
1818: if (!e_getifacebyname(szIface, &sa))
1819: return NULL;
1820:
1821: #ifdef HAVE_SRANDOMDEV
1822: srandomdev();
1823: #else
1824: time_t tim;
1825:
1826: srandom((time(&tim) ^ getpid()));
1827: #endif
1828:
1829: srv = e_malloc(sizeof(rpc_srv_t));
1830: if (!srv) {
1831: LOGERR;
1832: return NULL;
1833: } else
1834: memset(srv, 0, sizeof(rpc_srv_t));
1835:
1836: srv->srv_proto = SOCK_BPF;
1837: srv->srv_netbuf = netBuf;
1838: srv->srv_session.sess_version = RPC_VERSION;
1839: srv->srv_session.sess_instance = InstID;
1840:
1841: srv->srv_server.cli_parent = srv;
1842: memcpy(&srv->srv_server.cli_sa, &sa, sizeof srv->srv_server.cli_sa);
1843:
1844: /* init functions */
1845: pthread_mutex_init(&srv->srv_funcs.mtx, NULL);
1846: SLIST_INIT(&srv->srv_funcs);
1847: RB_INIT(&srv->srv_funcs);
1848:
1849: /* init scheduler */
1850: srv->srv_root = schedBegin();
1851: if (!srv->srv_root) {
1852: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1853: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1854: e_free(srv);
1855: return NULL;
1856: }
1857:
1858: /* init pool for clients */
1859: srv->srv_clients = array_Init(concurentClients);
1860: if (!srv->srv_clients) {
1861: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1862: schedEnd(&srv->srv_root);
1863: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1864: e_free(srv);
1865: return NULL;
1866: }
1867:
1868: /* create server handler */
1869: for (i = 0; i < 10; i++) {
1870: memset(szStr, 0, sizeof szStr);
1871: snprintf(szStr, sizeof szStr, "/dev/bpf%d", i);
1872: srv->srv_server.cli_sock = open(szStr, O_RDWR);
1873: if (srv->srv_server.cli_sock > STDERR_FILENO)
1874: break;
1875: }
1876: if (srv->srv_server.cli_sock < 3) {
1877: LOGERR;
1878: array_Destroy(&srv->srv_clients);
1879: schedEnd(&srv->srv_root);
1880: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1881: e_free(srv);
1882: return NULL;
1883: }
1884:
1885: if (ioctl(srv->srv_server.cli_sock, BIOCIMMEDIATE, &n) == -1) {
1886: LOGERR;
1887: goto err;
1888: }
1889: if (ioctl(srv->srv_server.cli_sock, BIOCSETF, &fcode) == -1) {
1890: LOGERR;
1891: goto err;
1892: }
1893: n = (netBuf < RPC_MIN_BUFSIZ) ? getpagesize() : E_ALIGN(netBuf, 2);
1894: if (ioctl(srv->srv_server.cli_sock, BIOCSBLEN, &n) == -1) {
1895: LOGERR;
1896: goto err;
1897: } else
1898: srv->srv_netbuf = n;
1899:
1900: memset(&ifr, 0, sizeof ifr);
1901: strlcpy(ifr.ifr_name, szIface, sizeof ifr.ifr_name);
1902: if (ioctl(srv->srv_server.cli_sock, BIOCSETIF, &ifr) == -1) {
1903: LOGERR;
1904: goto err;
1905: } else
1906: fcntl(srv->srv_server.cli_sock, F_SETFL,
1907: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
1908:
1909: rpc_register_srvPing(srv);
1910:
1911: return srv;
1912: err: /* error condition */
1913: close(srv->srv_server.cli_sock);
1914: array_Destroy(&srv->srv_clients);
1915: schedEnd(&srv->srv_root);
1916: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1917: e_free(srv);
1918: #else
1919: rpc_SetErr(ENOTSUP, "Feature isn't supported on Linux!");
1920: #endif
1921:
1922: return NULL;
1923: }
1924:
1925: /*
1926: * rpc_srv_initServerExt() - Init & create pipe RPC Server
1927: *
1928: * @InstID = Instance for authentication & recognition
1929: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
1930: * @fd = File descriptor
1931: * return: NULL == error or !=NULL bind and created RPC server instance
1932: */
1933: rpc_srv_t *
1934: rpc_srv_initServerExt(u_char InstID, int netBuf, int fd)
1935: {
1936: rpc_srv_t *srv = NULL;
1937:
1938: #ifdef HAVE_SRANDOMDEV
1939: srandomdev();
1940: #else
1941: time_t tim;
1942:
1943: srandom((time(&tim) ^ getpid()));
1944: #endif
1945:
1946: srv = e_malloc(sizeof(rpc_srv_t));
1947: if (!srv) {
1948: LOGERR;
1949: return NULL;
1950: } else
1951: memset(srv, 0, sizeof(rpc_srv_t));
1952:
1953: srv->srv_proto = SOCK_EXT;
1954: srv->srv_netbuf = (netBuf < RPC_MIN_BUFSIZ) ?
1955: getpagesize() : E_ALIGN(netBuf, 2);
1956: srv->srv_session.sess_version = RPC_VERSION;
1957: srv->srv_session.sess_instance = InstID;
1958:
1959: srv->srv_server.cli_parent = srv;
1960: srv->srv_server.cli_sock = fd;
1961:
1962: /* init functions */
1963: pthread_mutex_init(&srv->srv_funcs.mtx, NULL);
1964: SLIST_INIT(&srv->srv_funcs);
1965: RB_INIT(&srv->srv_funcs);
1966:
1967: /* init scheduler */
1968: srv->srv_root = schedBegin();
1969: if (!srv->srv_root) {
1970: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1971: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1972: e_free(srv);
1973: return NULL;
1974: }
1975:
1976: /* init pool for clients */
1977: srv->srv_clients = array_Init(1);
1978: if (!srv->srv_clients) {
1979: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1980: schedEnd(&srv->srv_root);
1981: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1982: e_free(srv);
1983: return NULL;
1984: }
1985:
1986: fcntl(srv->srv_server.cli_sock, F_SETFL,
1987: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
1988:
1989: rpc_register_srvPing(srv);
1990:
1991: return srv;
1992: }
1993:
1994: /*
1995: * rpc_srv_Return() - Prepare IPC return answer to RPC client
1996: *
1997: * @c = RPC client
1998: * return: number of arguments in response
1999: */
2000: int
2001: rpc_srv_Return(rpc_cli_t *c)
2002: {
2003: rpc_srv_t *s = c->cli_parent;
2004: u_char *buf = AIT_GET_BUF(&c->cli_buf);
2005: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
2006:
2007: if (!RPC_CHK_NOREPLY(rpc)) {
2008: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
2009: schedWrite(s->srv_root, cbProto[s->srv_proto][CB_TXPACKET], c, c->cli_sock, rpc, 0);
2010: } else
2011: rpc->call_argc ^= rpc->call_argc;
2012:
2013: return rpc->call_argc;
2014: }
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