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 1.24.2.5 2015/01/18 00:55:05 misho Exp $
7: *
8: **************************************************************************
9: The ELWIX and AITNET software is distributed under the following
10: terms:
11:
12: All of the documentation and software included in the ELWIX and AITNET
13: Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>
14:
15: Copyright 2004 - 2015
16: by Michael Pounov <misho@elwix.org>. All rights reserved.
17:
18: Redistribution and use in source and binary forms, with or without
19: modification, are permitted provided that the following conditions
20: are met:
21: 1. Redistributions of source code must retain the above copyright
22: notice, this list of conditions and the following disclaimer.
23: 2. Redistributions in binary form must reproduce the above copyright
24: notice, this list of conditions and the following disclaimer in the
25: documentation and/or other materials provided with the distribution.
26: 3. All advertising materials mentioning features or use of this software
27: must display the following acknowledgement:
28: This product includes software developed by Michael Pounov <misho@elwix.org>
29: ELWIX - Embedded LightWeight unIX and its contributors.
30: 4. Neither the name of AITNET nor the names of its contributors
31: may be used to endorse or promote products derived from this software
32: without specific prior written permission.
33:
34: THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND
35: ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
36: IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
37: ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
38: FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
39: DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
40: OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
41: HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
42: LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
43: OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
44: SUCH DAMAGE.
45: */
46: #include "global.h"
47:
48:
49: /* SOCK_STREAM */
50: static void *acceptClients(sched_task_t *);
51: static void *closeClient(sched_task_t *);
52: static void *rxPacket(sched_task_t *);
53: static void *txPacket(sched_task_t *);
54:
55: /* SOCK_DGRAM */
56: static void *freeClient(sched_task_t *);
57: static void *rxUDPPacket(sched_task_t *);
58: static void *txUDPPacket(sched_task_t *);
59:
60: /* SOCK_RAW */
61:
62: /* SOCK_BPF */
63: static void *rxBPFPacket(sched_task_t *);
64: static void *txBPFPacket(sched_task_t *);
65:
66: /* SOCK_EXT */
67: static void *rxEXTPacket(sched_task_t *);
68: static void *txEXTPacket(sched_task_t *);
69:
70: static sched_task_func_t cbProto[SOCK_MAX_SUPPORT][4] = {
71: { acceptClients, closeClient, rxPacket, txPacket }, /* SOCK_STREAM */
72: { acceptClients, closeClient, rxPacket, txPacket }, /* SOCK_STREAM */
73: { rxUDPPacket, freeClient, rxUDPPacket, txUDPPacket }, /* SOCK_DGRAM */
74: { NULL, NULL, NULL, NULL }, /* SOCK_RAW */
75: { rxBPFPacket, freeClient, rxBPFPacket, txBPFPacket }, /* SOCK_BPF */
76: { rxEXTPacket, freeClient, rxEXTPacket, txEXTPacket } /* SOCK_EXT */
77: };
78:
79: /* Global Signal Argument when kqueue support disabled */
80:
81: static volatile uintptr_t _glSigArg = 0;
82:
83:
84: void
85: rpc_freeCli(rpc_cli_t * __restrict c)
86: {
87: rpc_srv_t *s = c->cli_parent;
88:
89: schedCancelby(s->srv_root, taskMAX, CRITERIA_ARG, c, NULL);
90:
91: /* free buffer */
92: AIT_FREE_VAL(&c->cli_buf);
93:
94: array_Del(s->srv_clients, c->cli_id, 0);
95: if (c)
96: e_free(c);
97: }
98:
99:
100: static inline int
101: _check4freeslot(rpc_srv_t * __restrict srv, sockaddr_t * __restrict sa)
102: {
103: rpc_cli_t *c = NULL;
104: register int i;
105:
106: /* check free slots for connect */
107: for (i = 0; i < array_Size(srv->srv_clients) &&
108: (c = array(srv->srv_clients, i, rpc_cli_t*)); i++)
109: /* check for duplicates */
110: if (sa && !e_addrcmp(&c->cli_sa, sa, 42))
111: break;
112: if (i >= array_Size(srv->srv_clients))
113: return -1; /* no more free slots! */
114:
115: return i;
116: }
117:
118: static rpc_cli_t *
119: _allocClient(rpc_srv_t * __restrict srv, sockaddr_t * __restrict sa)
120: {
121: rpc_cli_t *c = NULL;
122: int n;
123:
124: if (srv->srv_proto != SOCK_EXT)
125: n = _check4freeslot(srv, sa);
126: else
127: n = 0;
128: if (n == -1)
129: return NULL;
130: else
131: c = array(srv->srv_clients, n, rpc_cli_t*);
132:
133: if (!c) {
134: c = e_malloc(sizeof(rpc_cli_t));
135: if (!c) {
136: LOGERR;
137: srv->srv_kill = 1;
138: return NULL;
139: } else {
140: memset(c, 0, sizeof(rpc_cli_t));
141: array_Set(srv->srv_clients, n, c);
142: c->cli_id = n;
143: c->cli_parent = srv;
144: }
145:
146: /* alloc empty buffer */
147: AIT_SET_BUFSIZ(&c->cli_buf, 0, srv->srv_netbuf);
148: }
149:
150: return c;
151: }
152:
153:
154: static void *
155: freeClient(sched_task_t *task)
156: {
157: rpc_freeCli(TASK_ARG(task));
158:
159: return NULL;
160: }
161:
162: static void *
163: closeClient(sched_task_t *task)
164: {
165: int sock = ((rpc_cli_t*) TASK_ARG(task))->cli_sock;
166:
167: rpc_freeCli(TASK_ARG(task));
168:
169: /* close client socket */
170: shutdown(sock, SHUT_RDWR);
171: close(sock);
172: return NULL;
173: }
174:
175: static void *
176: txPacket(sched_task_t *task)
177: {
178: rpc_cli_t *c = TASK_ARG(task);
179: rpc_srv_t *s = c->cli_parent;
180: rpc_func_t *f = NULL;
181: u_char *buf = AIT_GET_BUF(&c->cli_buf);
182: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
183: int ret, estlen, wlen = sizeof(struct tagRPCCall);
184: struct pollfd pfd;
185: #ifdef TCP_SESSION_TIMEOUT
186: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
187:
188: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
189: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
190: TASK_ARG(task), ts, TASK_ARG(task), 0);
191: #endif
192:
193: if (rpc->call_argc) {
194: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
195: if (!f) {
196: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
197:
198: rpc->call_argc ^= rpc->call_argc;
199: rpc->call_rep.ret = RPC_ERROR(-1);
200: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
201: } else {
202: /* calc estimated length */
203: estlen = ait_resideVars(RPC_RETVARS(c)) + wlen;
204: if (estlen > AIT_LEN(&c->cli_buf))
205: AIT_RE_BUF(&c->cli_buf, estlen);
206: buf = AIT_GET_BUF(&c->cli_buf);
207: rpc = (struct tagRPCCall*) buf;
208:
209: rpc->call_argc = htons(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: /* Free return values */
214: ait_freeVars(&c->cli_vars);
215: if (ret == -1) {
216: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
217:
218: rpc->call_argc ^= rpc->call_argc;
219: rpc->call_rep.ret = RPC_ERROR(-1);
220: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
221: } else
222: wlen += ret;
223: }
224: }
225:
226: rpc->call_len = htonl(wlen);
227:
228: #if 0
229: /* calculate CRC */
230: rpc->call_crc ^= rpc->call_crc;
231: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
232: #endif
233:
234: /* send reply */
235: pfd.fd = TASK_FD(task);
236: pfd.events = POLLOUT;
237: for (; wlen > 0; wlen -= ret, buf += ret) {
238: if ((ret = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 ||
239: pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
240: if (ret)
241: LOGERR;
242: else
243: rpc_SetErr(ETIMEDOUT, "Timeout reached! Client not respond");
244: /* close connection */
245: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
246: TASK_ARG(task), 0, NULL, 0);
247: return NULL;
248: }
249: ret = send(TASK_FD(task), buf, MIN(wlen, s->srv_netbuf), MSG_NOSIGNAL);
250: if (ret == -1) {
251: /* close connection */
252: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
253: TASK_ARG(task), 0, NULL, 0);
254: return NULL;
255: }
256: }
257:
258: return NULL;
259: }
260:
261: static void *
262: execCall(sched_task_t *task)
263: {
264: rpc_cli_t *c = TASK_ARG(task);
265: rpc_srv_t *s = c->cli_parent;
266: rpc_func_t *f = NULL;
267: array_t *arr = NULL;
268: u_char *buf = AIT_GET_BUF(&c->cli_buf);
269: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
270: int argc = ntohs(rpc->call_argc);
271:
272: /* Go decapsulate variables ... */
273: if (argc) {
274: arr = ait_buffer2vars(buf + sizeof(struct tagRPCCall),
275: AIT_LEN(&c->cli_buf) - sizeof(struct tagRPCCall), argc, 42);
276: if (!arr) {
277: rpc_SetErr(ERPCMISMATCH, "#%d - %s", elwix_GetErrno(), elwix_GetError());
278:
279: rpc->call_argc ^= rpc->call_argc;
280: rpc->call_rep.ret = RPC_ERROR(-1);
281: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
282: return NULL;
283: }
284: } else
285: arr = NULL;
286:
287: if (!(f = rpc_srv_getCall(s, ntohs(rpc->call_tag)))) {
288: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
289:
290: rpc->call_argc ^= rpc->call_argc;
291: rpc->call_rep.ret = RPC_ERROR(-1);
292: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
293: } else {
294: /* if client doesn't want reply */
295: argc = RPC_CHK_NOREPLY(rpc);
296: rpc->call_rep.ret = RPC_ERROR(rpc_srv_execCall(c, rpc, f->func_name, arr));
297: if (rpc->call_rep.ret == htonl(-1)) {
298: if (!rpc->call_rep.eno) {
299: LOGERR;
300: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
301: }
302: rpc->call_argc ^= rpc->call_argc;
303: } else {
304: rpc->call_rep.eno ^= rpc->call_rep.eno;
305: if (argc) {
306: /* without reply */
307: ait_freeVars(&c->cli_vars);
308: rpc->call_argc ^= rpc->call_argc;
309: } else {
310: /* reply */
311: rpc->call_argc = htons(array_Size(RPC_RETVARS(c)));
312: }
313: }
314: }
315:
316: array_Destroy(&arr);
317: return NULL;
318: }
319:
320: static void *
321: rxPacket(sched_task_t *task)
322: {
323: rpc_cli_t *c = TASK_ARG(task);
324: rpc_srv_t *s = c->cli_parent;
325: int len, rlen, noreply, estlen;
326: #if 0
327: u_short crc;
328: #endif
329: u_char *buf = AIT_GET_BUF(&c->cli_buf);
330: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
331: struct pollfd pfd;
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: memset(buf, 0, sizeof(struct tagRPCCall));
341: rlen = recv(TASK_FD(task), rpc, sizeof(struct tagRPCCall), MSG_PEEK);
342: if (rlen < sizeof(struct tagRPCCall)) {
343: /* close connection */
344: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
345: TASK_ARG(task), 0, NULL, 0);
346: return NULL;
347: } else {
348: estlen = ntohl(rpc->call_len);
349: if (estlen > AIT_LEN(&c->cli_buf))
350: AIT_RE_BUF(&c->cli_buf, estlen);
351: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
352: buf = AIT_GET_BUF(&c->cli_buf);
353: len = estlen;
354: }
355:
356: /* get next part of packet */
357: memset(buf, 0, len);
358: pfd.fd = TASK_FD(task);
359: pfd.events = POLLIN | POLLPRI;
360: for (; len > 0; len -= rlen, buf += rlen) {
361: if ((rlen = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 ||
362: pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
363: if (rlen)
364: LOGERR;
365: else
366: rpc_SetErr(ETIMEDOUT, "Timeout reached! Client not respond");
367: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
368: TASK_ARG(task), 0, NULL, 0);
369: return NULL;
370: }
371: rlen = recv(TASK_FD(task), buf, len, 0);
372: if (rlen == -1) {
373: /* close connection */
374: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
375: TASK_ARG(task), 0, NULL, 0);
376: return NULL;
377: }
378: }
379: len = estlen;
380:
381: #if 0
382: /* check integrity of packet */
383: crc = ntohs(rpc->call_crc);
384: rpc->call_crc ^= rpc->call_crc;
385: if (crc != crcFletcher16((u_short*) rpc, len / 2)) {
386: rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet");
387: return NULL;
388: }
389: #endif
390:
391: noreply = RPC_CHK_NOREPLY(rpc);
392:
393: /* check RPC packet session info */
394: if (rpc_chkPktSession(&rpc->call_session, &s->srv_session)) {
395: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
396:
397: rpc->call_argc ^= rpc->call_argc;
398: rpc->call_rep.ret = RPC_ERROR(-1);
399: rpc->call_rep.eno = RPC_ERROR(errno);
400: } else {
401: /* execute RPC call */
402: schedEvent(TASK_ROOT(task), execCall, TASK_ARG(task), (int) noreply, rpc, len);
403: }
404:
405: /* send RPC reply */
406: if (!noreply)
407: schedWrite(TASK_ROOT(task), cbProto[s->srv_proto][CB_TXPACKET],
408: TASK_ARG(task), TASK_FD(task), rpc, len);
409:
410: /* lets get next packet */
411: schedReadSelf(task);
412: return NULL;
413: }
414:
415: static void *
416: acceptClients(sched_task_t *task)
417: {
418: rpc_srv_t *srv = TASK_ARG(task);
419: rpc_cli_t *c = NULL;
420: socklen_t salen = sizeof(sockaddr_t);
421: int sock;
422: #ifdef TCP_SESSION_TIMEOUT
423: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
424: #endif
425:
426: c = _allocClient(srv, NULL);
427: if (!c) {
428: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
429: if ((sock = accept(TASK_FD(task), NULL, NULL)) != -1) {
430: shutdown(sock, SHUT_RDWR);
431: close(sock);
432: }
433: goto end;
434: }
435:
436: /* accept client */
437: c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen);
438: if (c->cli_sock == -1) {
439: LOGERR;
440: AIT_FREE_VAL(&c->cli_buf);
441: array_Del(srv->srv_clients, c->cli_id, 42);
442: goto end;
443: } else
444: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
445:
446: #ifdef TCP_SESSION_TIMEOUT
447: /* armed timer for close stateless connection */
448: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
449: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT], c,
450: ts, c, 0);
451: #endif
452: schedRead(TASK_ROOT(task), cbProto[srv->srv_proto][CB_RXPACKET], c,
453: c->cli_sock, NULL, 0);
454: end:
455: schedReadSelf(task);
456: return NULL;
457: }
458:
459:
460: static void *
461: txUDPPacket(sched_task_t *task)
462: {
463: rpc_cli_t *c = TASK_ARG(task);
464: rpc_srv_t *s = c->cli_parent;
465: rpc_func_t *f = NULL;
466: u_char *buf = AIT_GET_BUF(&c->cli_buf);
467: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
468: int ret, estlen, wlen = sizeof(struct tagRPCCall);
469: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
470: struct pollfd pfd;
471:
472: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
473: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
474: TASK_ARG(task), ts, TASK_ARG(task), 0);
475:
476: if (rpc->call_argc) {
477: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
478: if (!f) {
479: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
480: rpc->call_argc ^= rpc->call_argc;
481: rpc->call_rep.ret = RPC_ERROR(-1);
482: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
483: } else {
484: /* calc estimated length */
485: estlen = ait_resideVars(RPC_RETVARS(c)) + wlen;
486: if (estlen > AIT_LEN(&c->cli_buf))
487: AIT_RE_BUF(&c->cli_buf, estlen);
488: buf = AIT_GET_BUF(&c->cli_buf);
489: rpc = (struct tagRPCCall*) buf;
490:
491: rpc->call_argc = htons(array_Size(RPC_RETVARS(c)));
492: /* Go Encapsulate variables */
493: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
494: RPC_RETVARS(c));
495: /* Free return values */
496: ait_freeVars(&c->cli_vars);
497: if (ret == -1) {
498: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
499: rpc->call_argc ^= rpc->call_argc;
500: rpc->call_rep.ret = RPC_ERROR(-1);
501: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
502: } else
503: wlen += ret;
504: }
505: }
506:
507: rpc->call_len = htonl(wlen);
508:
509: /* calculate CRC */
510: rpc->call_crc ^= rpc->call_crc;
511: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
512:
513: /* send reply */
514: pfd.fd = TASK_FD(task);
515: pfd.events = POLLOUT;
516: for (; wlen > 0; wlen -= ret, buf += ret) {
517: if ((ret = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 ||
518: pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
519: if (ret)
520: LOGERR;
521: else
522: rpc_SetErr(ETIMEDOUT, "Timeout reached! Client not respond");
523: /* close connection */
524: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
525: TASK_ARG(task), 0, NULL, 0);
526: return NULL;
527: }
528: ret = sendto(TASK_FD(task), buf, MIN(wlen, s->srv_netbuf), MSG_NOSIGNAL,
529: &c->cli_sa.sa, c->cli_sa.sa.sa_len);
530: if (ret == -1) {
531: /* close connection */
532: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
533: TASK_ARG(task), 0, NULL, 0);
534: return NULL;
535: }
536: }
537:
538: return NULL;
539: }
540:
541: static void *
542: rxUDPPacket(sched_task_t *task)
543: {
544: rpc_srv_t *srv = TASK_ARG(task);
545: rpc_cli_t *c = NULL;
546: int len, rlen, noreply, estlen;
547: u_short crc;
548: u_char *buf, b[sizeof(struct tagRPCCall)];
549: struct tagRPCCall *rpc = (struct tagRPCCall*) b;
550: sockaddr_t sa;
551: socklen_t salen;
552: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
553: struct pollfd pfd;
554:
555: /* receive connect packet */
556: salen = sa.ss.ss_len = sizeof(sockaddr_t);
557: rlen = recvfrom(TASK_FD(task), b, sizeof b, MSG_PEEK, &sa.sa, &salen);
558: if (rlen < sizeof(struct tagRPCCall)) {
559: rpc_SetErr(ERPCMISMATCH, "Short RPC packet");
560: goto end;
561: }
562:
563: c = _allocClient(srv, &sa);
564: if (!c) {
565: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
566: usleep(2000); /* blocked client delay */
567: goto end;
568: } else {
569: estlen = ntohl(rpc->call_len);
570: if (estlen > AIT_LEN(&c->cli_buf))
571: AIT_RE_BUF(&c->cli_buf, estlen);
572: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
573: buf = AIT_GET_BUF(&c->cli_buf);
574: len = estlen;
575:
576: c->cli_sock = TASK_FD(task);
577: memcpy(&c->cli_sa, &sa, sizeof c->cli_sa);
578:
579: /* armed timer for close stateless connection */
580: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
581: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
582: c, ts, c, 0);
583: }
584:
585: /* get next part of packet */
586: memset(buf, 0, len);
587: pfd.fd = TASK_FD(task);
588: pfd.events = POLLIN | POLLPRI;
589: for (; len > 0; len -= rlen, buf += rlen) {
590: if ((rlen = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 ||
591: pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
592: if (rlen)
593: LOGERR;
594: else
595: rpc_SetErr(ETIMEDOUT, "Timeout reached! Client not respond");
596: schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
597: c, 0, NULL, 0);
598: goto end;
599: }
600: salen = sa.ss.ss_len = sizeof(sockaddr_t);
601: rlen = recvfrom(TASK_FD(task), buf, len, 0, &sa.sa, &salen);
602: if (rlen == -1) {
603: /* close connection */
604: schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
605: c, 0, NULL, 0);
606: goto end;
607: }
608: if (e_addrcmp(&c->cli_sa, &sa, 42))
609: rlen ^= rlen; /* skip if arrive from different address */
610: }
611: len = estlen;
612:
613: /* check integrity of packet */
614: crc = ntohs(rpc->call_crc);
615: rpc->call_crc ^= rpc->call_crc;
616: if (crc != crcFletcher16((u_short*) rpc, len / 2)) {
617: rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet");
618: /* close connection */
619: schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
620: c, 0, NULL, 0);
621: goto end;
622: }
623:
624: noreply = RPC_CHK_NOREPLY(rpc);
625:
626: /* check RPC packet session info */
627: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session)) {
628: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
629:
630: rpc->call_argc ^= rpc->call_argc;
631: rpc->call_rep.ret = RPC_ERROR(-1);
632: rpc->call_rep.eno = RPC_ERROR(errno);
633: } else {
634: /* execute RPC call */
635: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
636: }
637:
638: /* send RPC reply */
639: if (!noreply)
640: schedWrite(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
641: c, TASK_FD(task), rpc, len);
642: end:
643: schedReadSelf(task);
644: return NULL;
645: }
646:
647:
648: static void *
649: txBPFPacket(sched_task_t *task)
650: {
651: rpc_cli_t *c = TASK_ARG(task);
652: rpc_srv_t *s = c->cli_parent;
653: rpc_func_t *f = NULL;
654: u_char *buf = AIT_GET_BUF(&c->cli_buf);
655: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
656: int ret, len, wlen = sizeof(struct tagRPCCall);
657: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
658: struct ether_header *eh;
659: ait_val_t b = AIT_VAL_INIT;
660:
661: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
662: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
663: TASK_ARG(task), ts, TASK_ARG(task), 0);
664:
665: if (rpc->call_argc) {
666: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
667: if (!f) {
668: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
669: rpc->call_argc ^= rpc->call_argc;
670: rpc->call_rep.ret = RPC_ERROR(-1);
671: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
672: } else {
673: /* calc estimated length */
674: len = ait_resideVars(RPC_RETVARS(c)) + wlen;
675: if (len > AIT_LEN(&c->cli_buf))
676: AIT_RE_BUF(&c->cli_buf, len);
677: buf = AIT_GET_BUF(&c->cli_buf);
678: rpc = (struct tagRPCCall*) buf;
679:
680: rpc->call_argc = htons(array_Size(RPC_RETVARS(c)));
681: /* Go Encapsulate variables */
682: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
683: RPC_RETVARS(c));
684: /* Free return values */
685: ait_freeVars(&RPC_RETVARS(c));
686: if (ret == -1) {
687: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
688: rpc->call_argc ^= rpc->call_argc;
689: rpc->call_rep.ret = RPC_ERROR(-1);
690: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
691: } else
692: wlen += ret;
693: }
694: }
695:
696: rpc->call_len = htonl(wlen);
697:
698: /* calculate CRC */
699: rpc->call_crc ^= rpc->call_crc;
700: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
701:
702: /* send reply */
703: AIT_SET_BUF(&b, NULL, MIN(wlen, s->srv_netbuf) + ETHER_HDR_LEN);
704: eh = (struct ether_header*) AIT_GET_BUF(&b);
705: memcpy(eh->ether_dhost, LLADDR(&c->cli_sa.sdl), ETHER_ADDR_LEN);
706: eh->ether_type = htons(RPC_DEFPORT);
707: memcpy(eh + 1, buf, MIN(wlen, s->srv_netbuf));
708:
709: ret = write(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b));
710: AIT_FREE_VAL(&b);
711: if (ret == -1) {
712: /* close connection */
713: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
714: TASK_ARG(task), 0, NULL, 0);
715: return NULL;
716: }
717:
718: return NULL;
719: }
720:
721: static void *
722: rxBPFPacket(sched_task_t *task)
723: {
724: rpc_srv_t *srv = TASK_ARG(task);
725: rpc_cli_t *c = NULL;
726: int len, rlen, noreply;
727: u_short crc;
728: struct tagRPCCall *rpc;
729: sockaddr_t sa;
730: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
731: struct bpf_hdr *h;
732: struct ether_header *eh;
733: ait_val_t b = AIT_VAL_INIT;
734:
735: /* receive connect packet */
736: AIT_SET_BUF(&b, NULL, srv->srv_netbuf);
737: rlen = read(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b));
738: h = (struct bpf_hdr*) AIT_GET_BUF(&b);
739: rlen -= h->bh_hdrlen;
740: if (rlen < h->bh_datalen || h->bh_caplen != h->bh_datalen ||
741: rlen < ETHER_HDR_LEN + sizeof(struct tagRPCCall)) {
742: rpc_SetErr(ERPCMISMATCH, "Short RPC packet");
743: goto end;
744: } else {
745: rlen = h->bh_caplen;
746: eh = (struct ether_header*) (AIT_GET_BUF(&b) + h->bh_hdrlen);
747: rlen -= ETHER_HDR_LEN;
748: rpc = (struct tagRPCCall*) (eh + 1);
749: if (eh->ether_type != ntohs(RPC_DEFPORT))
750: goto end;
751: else
752: e_getlinkbymac((const ether_addr_t*) eh->ether_shost, &sa);
753: }
754:
755: c = _allocClient(srv, &sa);
756: if (!c) {
757: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
758: usleep(2000); /* blocked client delay */
759: goto end;
760: } else {
761: len = ntohl(rpc->call_len);
762: if (len > AIT_LEN(&c->cli_buf))
763: AIT_RE_BUF(&c->cli_buf, len);
764: memcpy(AIT_GET_BUF(&c->cli_buf), rpc, AIT_LEN(&c->cli_buf));
765: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
766:
767: c->cli_sock = TASK_FD(task);
768: memcpy(&c->cli_sa, &sa, sizeof c->cli_sa);
769:
770: /* armed timer for close stateless connection */
771: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
772: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
773: c, ts, c, 0);
774: }
775:
776: /* check integrity of packet */
777: crc = ntohs(rpc->call_crc);
778: rpc->call_crc ^= rpc->call_crc;
779: if (crc != crcFletcher16((u_short*) rpc, len / 2)) {
780: rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet");
781: /* close connection */
782: schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
783: c, 0, NULL, 0);
784: goto end;
785: }
786:
787: noreply = RPC_CHK_NOREPLY(rpc);
788:
789: /* check RPC packet session info */
790: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session)) {
791: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
792:
793: rpc->call_argc ^= rpc->call_argc;
794: rpc->call_rep.ret = RPC_ERROR(-1);
795: rpc->call_rep.eno = RPC_ERROR(errno);
796: } else {
797: /* execute RPC call */
798: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
799: }
800:
801: /* send RPC reply */
802: if (!noreply)
803: schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
804: c, TASK_FD(task), rpc, len);
805: end:
806: AIT_FREE_VAL(&b);
807: schedReadSelf(task);
808: return NULL;
809: }
810:
811:
812: static void *
813: txEXTPacket(sched_task_t *task)
814: {
815: rpc_cli_t *c = TASK_ARG(task);
816: rpc_srv_t *s = c->cli_parent;
817: rpc_func_t *f = NULL;
818: u_char *buf = AIT_GET_BUF(&c->cli_buf);
819: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
820: int ret, estlen, wlen = sizeof(struct tagRPCCall);
821: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
822: struct pollfd pfd;
823:
824: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
825: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
826: TASK_ARG(task), ts, TASK_ARG(task), 0);
827:
828: if (rpc->call_argc) {
829: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
830: if (!f) {
831: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
832: rpc->call_argc ^= rpc->call_argc;
833: rpc->call_rep.ret = RPC_ERROR(-1);
834: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
835: } else {
836: /* calc estimated length */
837: estlen = ait_resideVars(RPC_RETVARS(c)) + wlen;
838: if (estlen > AIT_LEN(&c->cli_buf))
839: AIT_RE_BUF(&c->cli_buf, estlen);
840: buf = AIT_GET_BUF(&c->cli_buf);
841: rpc = (struct tagRPCCall*) buf;
842:
843: rpc->call_argc = htons(array_Size(RPC_RETVARS(c)));
844: /* Go Encapsulate variables */
845: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
846: RPC_RETVARS(c));
847: /* Free return values */
848: ait_freeVars(&c->cli_vars);
849: if (ret == -1) {
850: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
851: rpc->call_argc ^= rpc->call_argc;
852: rpc->call_rep.ret = RPC_ERROR(-1);
853: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
854: } else
855: wlen += ret;
856: }
857: }
858:
859: rpc->call_len = htonl(wlen);
860:
861: /* send reply */
862: pfd.fd = TASK_FD(task);
863: pfd.events = POLLOUT;
864: for (; wlen > 0; wlen -= ret, buf += ret) {
865: if ((ret = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 ||
866: pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
867: if (ret)
868: LOGERR;
869: else
870: rpc_SetErr(ETIMEDOUT, "Timeout reached! Client not respond");
871: /* close connection */
872: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
873: TASK_ARG(task), 0, NULL, 0);
874: return NULL;
875: }
876: ret = write(TASK_FD(task), buf, MIN(wlen, s->srv_netbuf));
877: if (ret == -1) {
878: /* close connection */
879: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
880: TASK_ARG(task), 0, NULL, 0);
881: return NULL;
882: }
883: }
884:
885: return NULL;
886: }
887:
888: static void *
889: rxEXTPacket(sched_task_t *task)
890: {
891: rpc_srv_t *srv = TASK_ARG(task);
892: rpc_cli_t *c = NULL;
893: int len, rlen, noreply, estlen;
894: u_char *buf, b[sizeof(struct tagRPCCall)];
895: struct tagRPCCall *rpc = (struct tagRPCCall*) b;
896: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
897: struct pollfd pfd;
898:
899: /* receive connect packet */
900: rlen = read(TASK_FD(task), b, sizeof b);
901: if (rlen < sizeof(struct tagRPCCall)) {
902: rpc_SetErr(ERPCMISMATCH, "Short RPC packet");
903: goto end;
904: }
905:
906: c = _allocClient(srv, (sockaddr_t*) -1);
907: if (!c) {
908: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
909: usleep(2000); /* blocked client delay */
910: goto end;
911: } else {
912: estlen = ntohl(rpc->call_len);
913: if (estlen > AIT_LEN(&c->cli_buf))
914: AIT_RE_BUF(&c->cli_buf, estlen);
915: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
916: memcpy(rpc, b, sizeof b);
917: buf = (u_char*) (rpc + 1);
918: len = estlen;
919:
920: c->cli_sock = TASK_FD(task);
921:
922: /* armed timer for close stateless connection */
923: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
924: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
925: c, ts, c, 0);
926: }
927:
928: /* get next part of packet */
929: memset(buf, 0, len);
930: pfd.fd = TASK_FD(task);
931: pfd.events = POLLIN | POLLPRI;
932: for (; len > 0; len -= rlen, buf += rlen) {
933: if ((rlen = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 ||
934: pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
935: if (rlen)
936: LOGERR;
937: else
938: rpc_SetErr(ETIMEDOUT, "Timeout reached! Client not respond");
939: schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
940: c, 0, NULL, 0);
941: goto end;
942: }
943: rlen = read(TASK_FD(task), buf, len);
944: if (rlen == -1) {
945: /* close connection */
946: schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
947: c, 0, NULL, 0);
948: goto end;
949: }
950: }
951: len = estlen;
952:
953: noreply = RPC_CHK_NOREPLY(rpc);
954:
955: /* check RPC packet session info */
956: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session)) {
957: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
958:
959: rpc->call_argc ^= rpc->call_argc;
960: rpc->call_rep.ret = RPC_ERROR(-1);
961: rpc->call_rep.eno = RPC_ERROR(errno);
962: } else {
963: /* execute RPC call */
964: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
965: }
966:
967: /* send RPC reply */
968: if (!noreply)
969: schedWrite(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
970: c, TASK_FD(task), rpc, len);
971: end:
972: schedReadSelf(task);
973: return NULL;
974: }
975:
976: /* ------------------------------------------------------ */
977:
978: void
979: rpc_freeBLOBCli(rpc_cli_t * __restrict c)
980: {
981: rpc_srv_t *s = c->cli_parent;
982:
983: schedCancelby(s->srv_blob.root, taskMAX, CRITERIA_ARG, c, NULL);
984:
985: /* free buffer */
986: AIT_FREE_VAL(&c->cli_buf);
987:
988: array_Del(s->srv_blob.clients, c->cli_id, 0);
989: if (c)
990: e_free(c);
991: }
992:
993:
994: static void *
995: closeBLOBClient(sched_task_t *task)
996: {
997: int sock = ((rpc_cli_t*) TASK_ARG(task))->cli_sock;
998:
999: rpc_freeBLOBCli(TASK_ARG(task));
1000:
1001: /* close client socket */
1002: shutdown(sock, SHUT_RDWR);
1003: close(sock);
1004: return NULL;
1005: }
1006:
1007: static void *
1008: txBLOB(sched_task_t *task)
1009: {
1010: rpc_cli_t *c = TASK_ARG(task);
1011: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1012: int wlen = sizeof(struct tagBLOBHdr);
1013:
1014: /* send reply */
1015: wlen = send(TASK_FD(task), buf, wlen, MSG_NOSIGNAL);
1016: if (wlen == -1 || wlen != sizeof(struct tagBLOBHdr)) {
1017: /* close blob connection */
1018: schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0);
1019: }
1020:
1021: return NULL;
1022: }
1023:
1024: static void *
1025: rxBLOB(sched_task_t *task)
1026: {
1027: rpc_cli_t *c = TASK_ARG(task);
1028: rpc_srv_t *s = c->cli_parent;
1029: rpc_blob_t *b;
1030: struct tagBLOBHdr blob;
1031: int rlen;
1032:
1033: memset(&blob, 0, sizeof blob);
1034: rlen = recv(TASK_FD(task), &blob, sizeof blob, 0);
1035: if (rlen < 1) {
1036: /* close blob connection */
1037: schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0);
1038: return NULL;
1039: }
1040:
1041: /* check BLOB packet */
1042: if (rlen < sizeof(struct tagBLOBHdr)) {
1043: rpc_SetErr(ERPCMISMATCH, "Short BLOB packet");
1044:
1045: schedReadSelf(task);
1046: return NULL;
1047: }
1048:
1049: /* check RPC packet session info */
1050: if (rpc_chkPktSession(&blob.hdr_session, &s->srv_session)) {
1051: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
1052: blob.hdr_cmd = error;
1053: goto end;
1054: }
1055:
1056: /* Go to proceed packet ... */
1057: switch (blob.hdr_cmd) {
1058: case get:
1059: if (!(b = rpc_srv_getBLOB(s, ntohl(blob.hdr_var)))) {
1060: rpc_SetErr(EINVAL, "Var=%x not found", ntohl(blob.hdr_var));
1061: blob.hdr_cmd = no;
1062: blob.hdr_ret = RPC_ERROR(-1);
1063: break;
1064: } else
1065: blob.hdr_len = htonl(b->blob_len);
1066:
1067: if (rpc_srv_blobMap(s, b) != -1) {
1068: /* deliver BLOB variable to client */
1069: blob.hdr_ret = htonl(rpc_srv_sendBLOB(c, b));
1070: rpc_srv_blobUnmap(b);
1071: } else {
1072: blob.hdr_cmd = error;
1073: blob.hdr_ret = RPC_ERROR(-1);
1074: }
1075: break;
1076: case set:
1077: if ((b = rpc_srv_registerBLOB(s, ntohl(blob.hdr_len),
1078: ntohl(blob.hdr_ret)))) {
1079: /* set new BLOB variable for reply :) */
1080: blob.hdr_var = htonl(b->blob_var);
1081:
1082: /* receive BLOB from client */
1083: blob.hdr_ret = htonl(rpc_srv_recvBLOB(c, b));
1084: rpc_srv_blobUnmap(b);
1085: } else {
1086: blob.hdr_cmd = error;
1087: blob.hdr_ret = RPC_ERROR(-1);
1088: }
1089: break;
1090: case unset:
1091: if (rpc_srv_unregisterBLOB(s, ntohl(blob.hdr_var)) == -1) {
1092: blob.hdr_cmd = error;
1093: blob.hdr_ret = RPC_ERROR(-1);
1094: }
1095: break;
1096: default:
1097: rpc_SetErr(EPROCUNAVAIL, "Unsupported BLOB command %d", blob.hdr_cmd);
1098: blob.hdr_cmd = error;
1099: blob.hdr_ret = RPC_ERROR(-1);
1100: }
1101:
1102: end:
1103: memcpy(AIT_ADDR(&c->cli_buf), &blob, sizeof blob);
1104: schedWrite(TASK_ROOT(task), txBLOB, TASK_ARG(task), TASK_FD(task), NULL, 0);
1105: schedReadSelf(task);
1106: return NULL;
1107: }
1108:
1109: static void *
1110: flushBLOB(sched_task_t *task)
1111: {
1112: uintptr_t sigArg = atomic_load_acq_ptr(&_glSigArg);
1113: rpc_srv_t *srv = sigArg ? (void*) sigArg : TASK_ARG(task);
1114: rpc_blob_t *b, *tmp;
1115:
1116: TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) {
1117: TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node);
1118:
1119: rpc_srv_blobFree(srv, b);
1120: e_free(b);
1121: }
1122:
1123: if (!schedSignalSelf(task)) {
1124: /* disabled kqueue support in libaitsched */
1125: struct sigaction sa;
1126:
1127: memset(&sa, 0, sizeof sa);
1128: sigemptyset(&sa.sa_mask);
1129: sa.sa_handler = (void (*)(int)) flushBLOB;
1130: sa.sa_flags = SA_RESTART | SA_RESETHAND;
1131: sigaction(SIGFBLOB, &sa, NULL);
1132: }
1133:
1134: return NULL;
1135: }
1136:
1137: static void *
1138: acceptBLOBClients(sched_task_t *task)
1139: {
1140: rpc_srv_t *srv = TASK_ARG(task);
1141: rpc_cli_t *c = NULL;
1142: register int i;
1143: socklen_t salen = sizeof(sockaddr_t);
1144: int sock;
1145: #ifdef TCP_NOPUSH
1146: int n = 1;
1147: #endif
1148:
1149: /* check free slots for connect */
1150: for (i = 0; i < array_Size(srv->srv_blob.clients) &&
1151: (c = array(srv->srv_blob.clients, i, rpc_cli_t*)); i++);
1152: if (c) { /* no more free slots! */
1153: EVERBOSE(1, "BLOB client quota exceeded! Connection will be shutdown!\n");
1154: if ((sock = accept(TASK_FD(task), NULL, NULL)) != -1) {
1155: shutdown(sock, SHUT_RDWR);
1156: close(sock);
1157: }
1158: goto end;
1159: }
1160:
1161: c = e_malloc(sizeof(rpc_cli_t));
1162: if (!c) {
1163: LOGERR;
1164: srv->srv_kill = srv->srv_blob.kill = 1;
1165: return NULL;
1166: } else {
1167: memset(c, 0, sizeof(rpc_cli_t));
1168: array_Set(srv->srv_blob.clients, i, c);
1169: c->cli_id = i;
1170: c->cli_parent = srv;
1171: }
1172:
1173: /* alloc empty buffer */
1174: AIT_SET_BUFSIZ(&c->cli_buf, 0, srv->srv_netbuf);
1175:
1176: /* accept client */
1177: c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen);
1178: if (c->cli_sock == -1) {
1179: LOGERR;
1180: AIT_FREE_VAL(&c->cli_buf);
1181: array_Del(srv->srv_blob.clients, i, 42);
1182: goto end;
1183: } else {
1184: #ifdef TCP_NOPUSH
1185: setsockopt(c->cli_sock, IPPROTO_TCP, TCP_NOPUSH, &n, sizeof n);
1186: #endif
1187: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
1188: }
1189:
1190: schedRead(TASK_ROOT(task), rxBLOB, c, c->cli_sock, NULL, 0);
1191: end:
1192: schedReadSelf(task);
1193: return NULL;
1194: }
1195:
1196: /* ------------------------------------------------------ */
1197:
1198: /*
1199: * rpc_srv_initBLOBServer() - Init & create BLOB Server
1200: *
1201: * @srv = RPC server instance
1202: * @Port = Port for bind server, if Port == 0 default port is selected
1203: * @diskDir = Disk place for BLOB file objects
1204: * return: -1 == error or 0 bind and created BLOB server instance
1205: */
1206: int
1207: rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, u_short Port, const char *diskDir)
1208: {
1209: int n = 1;
1210:
1211: if (!srv || srv->srv_kill) {
1212: rpc_SetErr(EINVAL, "Invalid parameters can`t init BLOB server");
1213: return -1;
1214: }
1215:
1216: memset(&srv->srv_blob, 0, sizeof srv->srv_blob);
1217: if (access(diskDir, R_OK | W_OK) == -1) {
1218: LOGERR;
1219: return -1;
1220: } else
1221: AIT_SET_STR(&srv->srv_blob.dir, diskDir);
1222:
1223: /* init blob list */
1224: TAILQ_INIT(&srv->srv_blob.blobs);
1225:
1226: srv->srv_blob.server.cli_parent = srv;
1227:
1228: memcpy(&srv->srv_blob.server.cli_sa, &srv->srv_server.cli_sa, sizeof(sockaddr_t));
1229: switch (srv->srv_blob.server.cli_sa.sa.sa_family) {
1230: case AF_INET:
1231: srv->srv_blob.server.cli_sa.sin.sin_port =
1232: htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin.sin_port) + 1);
1233: break;
1234: case AF_INET6:
1235: srv->srv_blob.server.cli_sa.sin6.sin6_port =
1236: htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin6.sin6_port) + 1);
1237: break;
1238: case AF_LOCAL:
1239: strlcat(srv->srv_blob.server.cli_sa.sun.sun_path, ".blob",
1240: sizeof srv->srv_blob.server.cli_sa.sun.sun_path);
1241: break;
1242: default:
1243: AIT_FREE_VAL(&srv->srv_blob.dir);
1244: return -1;
1245: }
1246:
1247: /* create BLOB server socket */
1248: srv->srv_blob.server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, SOCK_STREAM, 0);
1249: if (srv->srv_blob.server.cli_sock == -1) {
1250: LOGERR;
1251: AIT_FREE_VAL(&srv->srv_blob.dir);
1252: return -1;
1253: }
1254: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
1255: LOGERR;
1256: close(srv->srv_blob.server.cli_sock);
1257: AIT_FREE_VAL(&srv->srv_blob.dir);
1258: return -1;
1259: }
1260: n = srv->srv_netbuf;
1261: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
1262: LOGERR;
1263: close(srv->srv_blob.server.cli_sock);
1264: AIT_FREE_VAL(&srv->srv_blob.dir);
1265: return -1;
1266: }
1267: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
1268: LOGERR;
1269: close(srv->srv_blob.server.cli_sock);
1270: AIT_FREE_VAL(&srv->srv_blob.dir);
1271: return -1;
1272: }
1273: if (bind(srv->srv_blob.server.cli_sock, &srv->srv_blob.server.cli_sa.sa,
1274: srv->srv_blob.server.cli_sa.sa.sa_len) == -1) {
1275: LOGERR;
1276: close(srv->srv_blob.server.cli_sock);
1277: AIT_FREE_VAL(&srv->srv_blob.dir);
1278: return -1;
1279: } else
1280: fcntl(srv->srv_blob.server.cli_sock, F_SETFL,
1281: fcntl(srv->srv_blob.server.cli_sock, F_GETFL) | O_NONBLOCK);
1282:
1283:
1284: /* allocate pool for concurent blob clients */
1285: srv->srv_blob.clients = array_Init(array_Size(srv->srv_clients));
1286: if (!srv->srv_blob.clients) {
1287: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1288: close(srv->srv_blob.server.cli_sock);
1289: AIT_FREE_VAL(&srv->srv_blob.dir);
1290: return -1;
1291: }
1292:
1293: /* init blob scheduler */
1294: srv->srv_blob.root = schedBegin();
1295: if (!srv->srv_blob.root) {
1296: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1297: array_Destroy(&srv->srv_blob.clients);
1298: close(srv->srv_blob.server.cli_sock);
1299: AIT_FREE_VAL(&srv->srv_blob.dir);
1300: return -1;
1301: }
1302:
1303: return 0;
1304: }
1305:
1306: /*
1307: * rpc_srv_endBLOBServer() - Destroy BLOB server, close all opened sockets and free resources
1308: *
1309: * @srv = RPC Server instance
1310: * return: none
1311: */
1312: void
1313: rpc_srv_endBLOBServer(rpc_srv_t * __restrict srv)
1314: {
1315: if (!srv)
1316: return;
1317:
1318: srv->srv_blob.kill = 1;
1319:
1320: schedEnd(&srv->srv_blob.root);
1321: }
1322:
1323: /*
1324: * rpc_srv_loopBLOBServer() - Execute Main BLOB server loop and wait for clients requests
1325: *
1326: * @srv = RPC Server instance
1327: * return: -1 error or 0 ok, infinite loop ...
1328: */
1329: int
1330: rpc_srv_loopBLOBServer(rpc_srv_t * __restrict srv)
1331: {
1332: rpc_cli_t *c;
1333: register int i;
1334: rpc_blob_t *b, *tmp;
1335: struct timespec ts = { RPC_SCHED_POLLING, 0 };
1336:
1337: if (!srv || srv->srv_kill) {
1338: rpc_SetErr(EINVAL, "Invalid parameter can`t start BLOB server");
1339: return -1;
1340: }
1341:
1342: if (listen(srv->srv_blob.server.cli_sock, array_Size(srv->srv_blob.clients)) == -1) {
1343: LOGERR;
1344: return -1;
1345: }
1346:
1347: if (!schedSignal(srv->srv_blob.root, flushBLOB, srv, SIGFBLOB, NULL, 0)) {
1348: /* disabled kqueue support in libaitsched */
1349: struct sigaction sa;
1350:
1351: atomic_store_rel_ptr(&_glSigArg, (uintptr_t) srv);
1352:
1353: memset(&sa, 0, sizeof sa);
1354: sigemptyset(&sa.sa_mask);
1355: sa.sa_handler = (void (*)(int)) flushBLOB;
1356: sa.sa_flags = SA_RESTART | SA_RESETHAND;
1357: sigaction(SIGFBLOB, &sa, NULL);
1358: }
1359:
1360: if (!schedRead(srv->srv_blob.root, acceptBLOBClients, srv,
1361: srv->srv_blob.server.cli_sock, NULL, 0)) {
1362: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1363: return -1;
1364: }
1365:
1366: schedPolling(srv->srv_blob.root, &ts, NULL);
1367: /* main rpc loop */
1368: schedRun(srv->srv_blob.root, &srv->srv_blob.kill);
1369:
1370: /* detach blobs */
1371: TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) {
1372: TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node);
1373:
1374: rpc_srv_blobFree(srv, b);
1375: e_free(b);
1376: }
1377:
1378: /* close all clients connections & server socket */
1379: for (i = 0; i < array_Size(srv->srv_blob.clients); i++) {
1380: c = array(srv->srv_blob.clients, i, rpc_cli_t*);
1381: if (c) {
1382: shutdown(c->cli_sock, SHUT_RDWR);
1383: close(c->cli_sock);
1384:
1385: schedCancelby(srv->srv_blob.root, taskMAX, CRITERIA_ARG, c, NULL);
1386: AIT_FREE_VAL(&c->cli_buf);
1387: }
1388: array_Del(srv->srv_blob.clients, i, 42);
1389: }
1390: array_Destroy(&srv->srv_blob.clients);
1391:
1392: close(srv->srv_blob.server.cli_sock);
1393:
1394: AIT_FREE_VAL(&srv->srv_blob.dir);
1395: return 0;
1396: }
1397:
1398:
1399: /*
1400: * rpc_srv_initServer() - Init & create RPC Server
1401: *
1402: * @InstID = Instance for authentication & recognition
1403: * @concurentClients = Concurent clients at same time to this server
1404: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
1405: * @csHost = Host name or address for bind server, if NULL any address
1406: * @Port = Port for bind server, if Port == 0 default port is selected
1407: * @proto = Protocol, if == 0 choose SOCK_STREAM
1408: * return: NULL == error or !=NULL bind and created RPC server instance
1409: */
1410: rpc_srv_t *
1411: rpc_srv_initServer(u_char InstID, int concurentClients, int netBuf,
1412: const char *csHost, u_short Port, int proto)
1413: {
1414: int n = 1;
1415: rpc_srv_t *srv = NULL;
1416: sockaddr_t sa = E_SOCKADDR_INIT;
1417:
1418: if (!concurentClients || (proto < 0 || proto > SOCK_RAW)) {
1419: rpc_SetErr(EINVAL, "Invalid parameters can`t init RPC server");
1420: return NULL;
1421: }
1422: if (!e_gethostbyname(csHost, Port, &sa))
1423: return NULL;
1424: if (!Port)
1425: Port = RPC_DEFPORT;
1426: if (!proto)
1427: proto = SOCK_STREAM;
1428: if (netBuf < RPC_MIN_BUFSIZ)
1429: netBuf = BUFSIZ;
1430: else
1431: netBuf = E_ALIGN(netBuf, 2); /* align netBuf length */
1432:
1433: #ifdef HAVE_SRANDOMDEV
1434: srandomdev();
1435: #else
1436: time_t tim;
1437:
1438: srandom((time(&tim) ^ getpid()));
1439: #endif
1440:
1441: srv = e_malloc(sizeof(rpc_srv_t));
1442: if (!srv) {
1443: LOGERR;
1444: return NULL;
1445: } else
1446: memset(srv, 0, sizeof(rpc_srv_t));
1447:
1448: srv->srv_proto = proto;
1449: srv->srv_netbuf = netBuf;
1450: srv->srv_session.sess_version = RPC_VERSION;
1451: srv->srv_session.sess_instance = InstID;
1452:
1453: srv->srv_server.cli_parent = srv;
1454: memcpy(&srv->srv_server.cli_sa, &sa, sizeof srv->srv_server.cli_sa);
1455:
1456: /* init functions */
1457: pthread_mutex_init(&srv->srv_funcs.mtx, NULL);
1458: SLIST_INIT(&srv->srv_funcs);
1459: AVL_INIT(&srv->srv_funcs);
1460:
1461: /* init scheduler */
1462: srv->srv_root = schedBegin();
1463: if (!srv->srv_root) {
1464: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1465: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1466: e_free(srv);
1467: return NULL;
1468: }
1469:
1470: /* init pool for clients */
1471: srv->srv_clients = array_Init(concurentClients);
1472: if (!srv->srv_clients) {
1473: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1474: schedEnd(&srv->srv_root);
1475: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1476: e_free(srv);
1477: return NULL;
1478: }
1479:
1480: /* create server socket */
1481: srv->srv_server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, srv->srv_proto, 0);
1482: if (srv->srv_server.cli_sock == -1) {
1483: LOGERR;
1484: array_Destroy(&srv->srv_clients);
1485: schedEnd(&srv->srv_root);
1486: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1487: e_free(srv);
1488: return NULL;
1489: }
1490: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
1491: LOGERR;
1492: goto err;
1493: }
1494: n = srv->srv_netbuf;
1495: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
1496: LOGERR;
1497: goto err;
1498: }
1499: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
1500: LOGERR;
1501: goto err;
1502: }
1503: if (bind(srv->srv_server.cli_sock, &srv->srv_server.cli_sa.sa,
1504: srv->srv_server.cli_sa.sa.sa_len) == -1) {
1505: LOGERR;
1506: goto err;
1507: } else
1508: fcntl(srv->srv_server.cli_sock, F_SETFL,
1509: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
1510:
1511: rpc_register_srvPing(srv);
1512:
1513: return srv;
1514: err: /* error condition */
1515: close(srv->srv_server.cli_sock);
1516: array_Destroy(&srv->srv_clients);
1517: schedEnd(&srv->srv_root);
1518: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1519: e_free(srv);
1520: return NULL;
1521: }
1522:
1523: /*
1524: * rpc_srv_endServer() - Destroy RPC server, close all opened sockets and free resources
1525: *
1526: * @psrv = RPC Server instance
1527: * return: none
1528: */
1529: void
1530: rpc_srv_endServer(rpc_srv_t ** __restrict psrv)
1531: {
1532: if (!psrv || !*psrv)
1533: return;
1534:
1535: /* if send kill to blob server */
1536: rpc_srv_endBLOBServer(*psrv);
1537:
1538: (*psrv)->srv_kill = 1;
1539: sleep(RPC_SCHED_POLLING);
1540:
1541: schedEnd(&(*psrv)->srv_root);
1542:
1543: pthread_mutex_destroy(&(*psrv)->srv_funcs.mtx);
1544: e_free(*psrv);
1545: *psrv = NULL;
1546: }
1547:
1548: /*
1549: * rpc_srv_loopServer() - Execute Main server loop and wait for clients requests
1550: *
1551: * @srv = RPC Server instance
1552: * return: -1 error or 0 ok, infinite loop ...
1553: */
1554: int
1555: rpc_srv_loopServer(rpc_srv_t * __restrict srv)
1556: {
1557: rpc_cli_t *c;
1558: register int i;
1559: rpc_func_t *f;
1560: struct timespec ts = { RPC_SCHED_POLLING, 0 };
1561:
1562: if (!srv) {
1563: rpc_SetErr(EINVAL, "Invalid parameter can`t start RPC server");
1564: return -1;
1565: }
1566:
1567: if (srv->srv_proto == SOCK_STREAM)
1568: if (listen(srv->srv_server.cli_sock, array_Size(srv->srv_clients)) == -1) {
1569: LOGERR;
1570: return -1;
1571: }
1572:
1573: if (!schedRead(srv->srv_root, cbProto[srv->srv_proto][CB_ACCEPTCLIENT], srv,
1574: srv->srv_server.cli_sock, NULL, 0)) {
1575: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1576: return -1;
1577: }
1578:
1579: schedPolling(srv->srv_root, &ts, NULL);
1580: /* main rpc loop */
1581: schedRun(srv->srv_root, &srv->srv_kill);
1582:
1583: /* close all clients connections & server socket */
1584: for (i = 0; i < array_Size(srv->srv_clients); i++) {
1585: c = array(srv->srv_clients, i, rpc_cli_t*);
1586: if (c) {
1587: if (srv->srv_proto == SOCK_STREAM) {
1588: shutdown(c->cli_sock, SHUT_RDWR);
1589: close(c->cli_sock);
1590: }
1591:
1592: schedCancelby(srv->srv_root, taskMAX, CRITERIA_ARG, c, NULL);
1593: ait_freeVars(&RPC_RETVARS(c));
1594: AIT_FREE_VAL(&c->cli_buf);
1595: }
1596: array_Del(srv->srv_clients, i, 42);
1597: }
1598: array_Destroy(&srv->srv_clients);
1599:
1600: if (srv->srv_proto != SOCK_EXT)
1601: close(srv->srv_server.cli_sock);
1602:
1603: /* detach exported calls */
1604: RPC_FUNCS_LOCK(&srv->srv_funcs);
1605: while ((f = SLIST_FIRST(&srv->srv_funcs))) {
1606: SLIST_REMOVE_HEAD(&srv->srv_funcs, func_next);
1607:
1608: AIT_FREE_VAL(&f->func_name);
1609: e_free(f);
1610: }
1611: srv->srv_funcs.avlh_root = NULL;
1612: RPC_FUNCS_UNLOCK(&srv->srv_funcs);
1613:
1614: return 0;
1615: }
1616:
1617:
1618: /*
1619: * rpc_srv_execCall() Execute registered call from RPC server
1620: *
1621: * @cli = RPC client
1622: * @rpc = IN RPC call structure
1623: * @funcname = Execute RPC function
1624: * @args = IN RPC calling arguments from RPC client
1625: * return: -1 error, !=-1 ok
1626: */
1627: int
1628: rpc_srv_execCall(rpc_cli_t * __restrict cli, struct tagRPCCall * __restrict rpc,
1629: ait_val_t funcname, array_t * __restrict args)
1630: {
1631: rpc_callback_t func;
1632:
1633: if (!cli || !rpc || !AIT_ADDR(&funcname)) {
1634: rpc_SetErr(EINVAL, "Invalid parameter can`t exec function");
1635: return -1;
1636: }
1637:
1638: func = AIT_GET_LIKE(&funcname, rpc_callback_t);
1639: return func(cli, rpc, args);
1640: }
1641:
1642:
1643: /*
1644: * rpc_srv_initServer2() - Init & create layer2 RPC Server
1645: *
1646: * @InstID = Instance for authentication & recognition
1647: * @concurentClients = Concurent clients at same time to this server
1648: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
1649: * @csIface = Interface name for bind server, if NULL first interface on host
1650: * return: NULL == error or !=NULL bind and created RPC server instance
1651: */
1652: rpc_srv_t *
1653: rpc_srv_initServer2(u_char InstID, int concurentClients, int netBuf, const char *csIface)
1654: {
1655: int n = 1;
1656: rpc_srv_t *srv = NULL;
1657: sockaddr_t sa = E_SOCKADDR_INIT;
1658: char szIface[64], szStr[STRSIZ];
1659: register int i;
1660: struct ifreq ifr;
1661: struct bpf_insn insns[] = {
1662: BPF_STMT(BPF_LD + BPF_H + BPF_ABS, 12),
1663: BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, RPC_DEFPORT, 0, 1),
1664: BPF_STMT(BPF_RET + BPF_K, -1),
1665: BPF_STMT(BPF_RET + BPF_K, 0),
1666: };
1667: struct bpf_program fcode = {
1668: .bf_len = sizeof(insns) / sizeof(struct bpf_insn),
1669: .bf_insns = insns
1670: };
1671:
1672: if (!concurentClients) {
1673: rpc_SetErr(EINVAL, "Invalid parameters can`t init RPC server");
1674: return NULL;
1675: }
1676: if (!csIface) {
1677: if (e_get1stiface(szIface, sizeof szIface))
1678: return NULL;
1679: } else
1680: strlcpy(szIface, csIface, sizeof szIface);
1681: if (!e_getifacebyname(szIface, &sa))
1682: return NULL;
1683:
1684: #ifdef HAVE_SRANDOMDEV
1685: srandomdev();
1686: #else
1687: time_t tim;
1688:
1689: srandom((time(&tim) ^ getpid()));
1690: #endif
1691:
1692: srv = e_malloc(sizeof(rpc_srv_t));
1693: if (!srv) {
1694: LOGERR;
1695: return NULL;
1696: } else
1697: memset(srv, 0, sizeof(rpc_srv_t));
1698:
1699: srv->srv_proto = SOCK_BPF;
1700: srv->srv_netbuf = netBuf;
1701: srv->srv_session.sess_version = RPC_VERSION;
1702: srv->srv_session.sess_instance = InstID;
1703:
1704: srv->srv_server.cli_parent = srv;
1705: memcpy(&srv->srv_server.cli_sa, &sa, sizeof srv->srv_server.cli_sa);
1706:
1707: /* init functions */
1708: pthread_mutex_init(&srv->srv_funcs.mtx, NULL);
1709: SLIST_INIT(&srv->srv_funcs);
1710: AVL_INIT(&srv->srv_funcs);
1711:
1712: /* init scheduler */
1713: srv->srv_root = schedBegin();
1714: if (!srv->srv_root) {
1715: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1716: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1717: e_free(srv);
1718: return NULL;
1719: }
1720:
1721: /* init pool for clients */
1722: srv->srv_clients = array_Init(concurentClients);
1723: if (!srv->srv_clients) {
1724: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1725: schedEnd(&srv->srv_root);
1726: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1727: e_free(srv);
1728: return NULL;
1729: }
1730:
1731: /* create server handler */
1732: for (i = 0; i < 10; i++) {
1733: memset(szStr, 0, sizeof szStr);
1734: snprintf(szStr, sizeof szStr, "/dev/bpf%d", i);
1735: srv->srv_server.cli_sock = open(szStr, O_RDWR);
1736: if (srv->srv_server.cli_sock > STDERR_FILENO)
1737: break;
1738: }
1739: if (srv->srv_server.cli_sock < 3) {
1740: LOGERR;
1741: array_Destroy(&srv->srv_clients);
1742: schedEnd(&srv->srv_root);
1743: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1744: e_free(srv);
1745: return NULL;
1746: }
1747:
1748: if (ioctl(srv->srv_server.cli_sock, BIOCIMMEDIATE, &n) == -1) {
1749: LOGERR;
1750: goto err;
1751: }
1752: if (ioctl(srv->srv_server.cli_sock, BIOCSETF, &fcode) == -1) {
1753: LOGERR;
1754: goto err;
1755: }
1756: n = (netBuf < RPC_MIN_BUFSIZ) ? getpagesize() : E_ALIGN(netBuf, 2);
1757: if (ioctl(srv->srv_server.cli_sock, BIOCSBLEN, &n) == -1) {
1758: LOGERR;
1759: goto err;
1760: } else
1761: srv->srv_netbuf = n;
1762:
1763: memset(&ifr, 0, sizeof ifr);
1764: strlcpy(ifr.ifr_name, szIface, sizeof ifr.ifr_name);
1765: if (ioctl(srv->srv_server.cli_sock, BIOCSETIF, &ifr) == -1) {
1766: LOGERR;
1767: goto err;
1768: } else
1769: fcntl(srv->srv_server.cli_sock, F_SETFL,
1770: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
1771:
1772: rpc_register_srvPing(srv);
1773:
1774: return srv;
1775: err: /* error condition */
1776: close(srv->srv_server.cli_sock);
1777: array_Destroy(&srv->srv_clients);
1778: schedEnd(&srv->srv_root);
1779: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1780: e_free(srv);
1781: return NULL;
1782: }
1783:
1784: /*
1785: * rpc_srv_initServerExt() - Init & create pipe RPC Server
1786: *
1787: * @InstID = Instance for authentication & recognition
1788: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
1789: * @fd = File descriptor
1790: * return: NULL == error or !=NULL bind and created RPC server instance
1791: */
1792: rpc_srv_t *
1793: rpc_srv_initServerExt(u_char InstID, int netBuf, int fd)
1794: {
1795: rpc_srv_t *srv = NULL;
1796:
1797: #ifdef HAVE_SRANDOMDEV
1798: srandomdev();
1799: #else
1800: time_t tim;
1801:
1802: srandom((time(&tim) ^ getpid()));
1803: #endif
1804:
1805: srv = e_malloc(sizeof(rpc_srv_t));
1806: if (!srv) {
1807: LOGERR;
1808: return NULL;
1809: } else
1810: memset(srv, 0, sizeof(rpc_srv_t));
1811:
1812: srv->srv_proto = SOCK_EXT;
1813: srv->srv_netbuf = netBuf;
1814: srv->srv_session.sess_version = RPC_VERSION;
1815: srv->srv_session.sess_instance = InstID;
1816:
1817: srv->srv_server.cli_parent = srv;
1818: srv->srv_server.cli_sock = fd;
1819:
1820: /* init functions */
1821: pthread_mutex_init(&srv->srv_funcs.mtx, NULL);
1822: SLIST_INIT(&srv->srv_funcs);
1823: AVL_INIT(&srv->srv_funcs);
1824:
1825: /* init scheduler */
1826: srv->srv_root = schedBegin();
1827: if (!srv->srv_root) {
1828: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1829: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1830: e_free(srv);
1831: return NULL;
1832: }
1833:
1834: /* init pool for clients */
1835: srv->srv_clients = array_Init(1);
1836: if (!srv->srv_clients) {
1837: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1838: schedEnd(&srv->srv_root);
1839: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1840: e_free(srv);
1841: return NULL;
1842: }
1843:
1844: fcntl(srv->srv_server.cli_sock, F_SETFL,
1845: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
1846:
1847: rpc_register_srvPing(srv);
1848:
1849: return srv;
1850: }
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