Annotation of libaitrpc/src/srv.c, revision 1.25
1.1 misho 1: /*************************************************************************
2: * (C) 2010 AITNET ltd - Sofia/Bulgaria - <misho@aitbg.com>
3: * by Michael Pounov <misho@openbsd-bg.org>
4: *
5: * $Author: misho $
1.25 ! misho 6: * $Id: srv.c,v 1.24.2.7 2015/01/21 00:37:04 misho Exp $
1.1 misho 7: *
1.2 misho 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:
1.25 ! misho 15: Copyright 2004 - 2015
1.2 misho 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: */
1.1 misho 46: #include "global.h"
47:
48:
1.13 misho 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:
1.24 misho 62: /* SOCK_BPF */
63: static void *rxBPFPacket(sched_task_t *);
64: static void *txBPFPacket(sched_task_t *);
65:
1.25 ! misho 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] = {
1.13 misho 71: { acceptClients, closeClient, rxPacket, txPacket }, /* SOCK_STREAM */
72: { acceptClients, closeClient, rxPacket, txPacket }, /* SOCK_STREAM */
73: { rxUDPPacket, freeClient, rxUDPPacket, txUDPPacket }, /* SOCK_DGRAM */
1.24 misho 74: { NULL, NULL, NULL, NULL }, /* SOCK_RAW */
1.25 ! misho 75: { rxBPFPacket, freeClient, rxBPFPacket, txBPFPacket }, /* SOCK_BPF */
! 76: { rxEXTPacket, freeClient, rxEXTPacket, txEXTPacket } /* SOCK_EXT */
1.13 misho 77: };
78:
1.23 misho 79: /* Global Signal Argument when kqueue support disabled */
80:
81: static volatile uintptr_t _glSigArg = 0;
82:
1.13 misho 83:
1.16 misho 84: void
1.13 misho 85: rpc_freeCli(rpc_cli_t * __restrict c)
1.10 misho 86: {
87: rpc_srv_t *s = c->cli_parent;
88:
1.13 misho 89: schedCancelby(s->srv_root, taskMAX, CRITERIA_ARG, c, NULL);
1.10 misho 90:
91: /* free buffer */
92: AIT_FREE_VAL(&c->cli_buf);
93:
1.14 misho 94: array_Del(s->srv_clients, c->cli_id, 0);
1.10 misho 95: if (c)
1.14 misho 96: e_free(c);
1.13 misho 97: }
98:
99:
100: static inline int
1.14 misho 101: _check4freeslot(rpc_srv_t * __restrict srv, sockaddr_t * __restrict sa)
1.13 misho 102: {
103: rpc_cli_t *c = NULL;
104: register int i;
105:
106: /* check free slots for connect */
1.14 misho 107: for (i = 0; i < array_Size(srv->srv_clients) &&
108: (c = array(srv->srv_clients, i, rpc_cli_t*)); i++)
1.13 misho 109: /* check for duplicates */
1.14 misho 110: if (sa && !e_addrcmp(&c->cli_sa, sa, 42))
1.13 misho 111: break;
1.14 misho 112: if (i >= array_Size(srv->srv_clients))
1.13 misho 113: return -1; /* no more free slots! */
114:
115: return i;
116: }
117:
118: static rpc_cli_t *
1.14 misho 119: _allocClient(rpc_srv_t * __restrict srv, sockaddr_t * __restrict sa)
1.13 misho 120: {
121: rpc_cli_t *c = NULL;
122: int n;
123:
1.25 ! misho 124: if (srv->srv_proto != SOCK_EXT)
! 125: n = _check4freeslot(srv, sa);
! 126: else
! 127: n = 0;
1.13 misho 128: if (n == -1)
129: return NULL;
130: else
1.14 misho 131: c = array(srv->srv_clients, n, rpc_cli_t*);
1.13 misho 132:
133: if (!c) {
1.14 misho 134: c = e_malloc(sizeof(rpc_cli_t));
1.13 misho 135: if (!c) {
136: LOGERR;
137: srv->srv_kill = 1;
138: return NULL;
139: } else {
140: memset(c, 0, sizeof(rpc_cli_t));
1.14 misho 141: array_Set(srv->srv_clients, n, c);
1.13 misho 142: c->cli_id = n;
143: c->cli_parent = srv;
144: }
145:
146: /* alloc empty buffer */
1.14 misho 147: AIT_SET_BUFSIZ(&c->cli_buf, 0, srv->srv_netbuf);
1.13 misho 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);
1.10 misho 172: return NULL;
173: }
1.7 misho 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;
1.18 misho 181: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1.7 misho 182: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
1.18 misho 183: int ret, estlen, wlen = sizeof(struct tagRPCCall);
1.19 misho 184: struct pollfd pfd;
1.21 misho 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
1.7 misho 192:
193: if (rpc->call_argc) {
1.10 misho 194: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
1.7 misho 195: if (!f) {
1.10 misho 196: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
1.18 misho 197:
1.7 misho 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 {
1.18 misho 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);
1.19 misho 207: rpc = (struct tagRPCCall*) buf;
1.18 misho 208:
1.25 ! misho 209: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
1.7 misho 210: /* Go Encapsulate variables */
1.18 misho 211: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
212: RPC_RETVARS(c));
1.10 misho 213: /* Free return values */
1.14 misho 214: ait_freeVars(&c->cli_vars);
1.7 misho 215: if (ret == -1) {
216: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
1.19 misho 217:
1.7 misho 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:
1.18 misho 226: rpc->call_len = htonl(wlen);
1.25 ! misho 227: rpc->call_io = RPC_ACK;
1.8 misho 228:
1.15 misho 229: #if 0
1.7 misho 230: /* calculate CRC */
231: rpc->call_crc ^= rpc->call_crc;
1.8 misho 232: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
1.15 misho 233: #endif
1.7 misho 234:
235: /* send reply */
1.19 misho 236: pfd.fd = TASK_FD(task);
237: pfd.events = POLLOUT;
238: for (; wlen > 0; wlen -= ret, buf += ret) {
239: if ((ret = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 ||
240: pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
241: if (ret)
242: LOGERR;
243: else
1.22 misho 244: rpc_SetErr(ETIMEDOUT, "Timeout reached! Client not respond");
1.19 misho 245: /* close connection */
246: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
247: TASK_ARG(task), 0, NULL, 0);
248: return NULL;
249: }
250: ret = send(TASK_FD(task), buf, MIN(wlen, s->srv_netbuf), MSG_NOSIGNAL);
251: if (ret == -1) {
252: /* close connection */
253: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
254: TASK_ARG(task), 0, NULL, 0);
255: return NULL;
256: }
1.10 misho 257: }
1.7 misho 258:
259: return NULL;
260: }
261:
262: static void *
263: execCall(sched_task_t *task)
264: {
265: rpc_cli_t *c = TASK_ARG(task);
266: rpc_srv_t *s = c->cli_parent;
267: rpc_func_t *f = NULL;
268: array_t *arr = NULL;
1.18 misho 269: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1.7 misho 270: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
1.25 ! misho 271: int argc = rpc->call_argc;
1.7 misho 272:
273: /* Go decapsulate variables ... */
1.8 misho 274: if (argc) {
1.14 misho 275: arr = ait_buffer2vars(buf + sizeof(struct tagRPCCall),
1.18 misho 276: AIT_LEN(&c->cli_buf) - sizeof(struct tagRPCCall), argc, 42);
1.7 misho 277: if (!arr) {
1.14 misho 278: rpc_SetErr(ERPCMISMATCH, "#%d - %s", elwix_GetErrno(), elwix_GetError());
1.18 misho 279:
1.7 misho 280: rpc->call_argc ^= rpc->call_argc;
281: rpc->call_rep.ret = RPC_ERROR(-1);
282: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
283: return NULL;
284: }
1.10 misho 285: } else
286: arr = NULL;
1.7 misho 287:
1.10 misho 288: if (!(f = rpc_srv_getCall(s, ntohs(rpc->call_tag)))) {
1.7 misho 289: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
1.18 misho 290:
1.7 misho 291: rpc->call_argc ^= rpc->call_argc;
292: rpc->call_rep.ret = RPC_ERROR(-1);
293: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
294: } else {
1.8 misho 295: /* if client doesn't want reply */
1.10 misho 296: argc = RPC_CHK_NOREPLY(rpc);
297: rpc->call_rep.ret = RPC_ERROR(rpc_srv_execCall(c, rpc, f->func_name, arr));
1.7 misho 298: if (rpc->call_rep.ret == htonl(-1)) {
1.20 misho 299: if (!rpc->call_rep.eno) {
300: LOGERR;
301: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
302: }
1.7 misho 303: rpc->call_argc ^= rpc->call_argc;
304: } else {
305: rpc->call_rep.eno ^= rpc->call_rep.eno;
1.8 misho 306: if (argc) {
307: /* without reply */
1.14 misho 308: ait_freeVars(&c->cli_vars);
1.8 misho 309: rpc->call_argc ^= rpc->call_argc;
1.10 misho 310: } else {
311: /* reply */
1.25 ! misho 312: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
1.10 misho 313: }
1.7 misho 314: }
315: }
316:
1.14 misho 317: array_Destroy(&arr);
1.7 misho 318: return NULL;
319: }
320:
321: static void *
322: rxPacket(sched_task_t *task)
323: {
324: rpc_cli_t *c = TASK_ARG(task);
325: rpc_srv_t *s = c->cli_parent;
1.18 misho 326: int len, rlen, noreply, estlen;
1.15 misho 327: #if 0
328: u_short crc;
329: #endif
1.10 misho 330: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1.18 misho 331: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
1.19 misho 332: struct pollfd pfd;
1.21 misho 333: #ifdef TCP_SESSION_TIMEOUT
334: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
335:
336: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
337: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
338: TASK_ARG(task), ts, TASK_ARG(task), 0);
339: #endif
1.7 misho 340:
1.18 misho 341: memset(buf, 0, sizeof(struct tagRPCCall));
1.19 misho 342: rlen = recv(TASK_FD(task), rpc, sizeof(struct tagRPCCall), MSG_PEEK);
1.18 misho 343: if (rlen < sizeof(struct tagRPCCall)) {
1.10 misho 344: /* close connection */
1.13 misho 345: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
346: TASK_ARG(task), 0, NULL, 0);
1.7 misho 347: return NULL;
1.10 misho 348: } else {
1.18 misho 349: estlen = ntohl(rpc->call_len);
350: if (estlen > AIT_LEN(&c->cli_buf))
351: AIT_RE_BUF(&c->cli_buf, estlen);
352: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
1.19 misho 353: buf = AIT_GET_BUF(&c->cli_buf);
354: len = estlen;
1.18 misho 355: }
356:
1.19 misho 357: /* get next part of packet */
358: memset(buf, 0, len);
359: pfd.fd = TASK_FD(task);
360: pfd.events = POLLIN | POLLPRI;
361: for (; len > 0; len -= rlen, buf += rlen) {
362: if ((rlen = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 ||
363: pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
364: if (rlen)
365: LOGERR;
366: else
1.22 misho 367: rpc_SetErr(ETIMEDOUT, "Timeout reached! Client not respond");
1.19 misho 368: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
369: TASK_ARG(task), 0, NULL, 0);
370: return NULL;
371: }
1.18 misho 372: rlen = recv(TASK_FD(task), buf, len, 0);
373: if (rlen == -1) {
374: /* close connection */
375: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
376: TASK_ARG(task), 0, NULL, 0);
1.8 misho 377: return NULL;
1.10 misho 378: }
1.18 misho 379: }
1.22 misho 380: len = estlen;
1.8 misho 381:
1.25 ! misho 382: /* skip loop packet */
! 383: if (rpc->call_io & RPC_ACK) {
! 384: schedReadSelf(task);
! 385: return NULL;
! 386: }
! 387:
1.15 misho 388: #if 0
1.18 misho 389: /* check integrity of packet */
390: crc = ntohs(rpc->call_crc);
391: rpc->call_crc ^= rpc->call_crc;
392: if (crc != crcFletcher16((u_short*) rpc, len / 2)) {
393: rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet");
394: return NULL;
395: }
1.15 misho 396: #endif
1.7 misho 397:
1.18 misho 398: noreply = RPC_CHK_NOREPLY(rpc);
1.7 misho 399:
1.18 misho 400: /* check RPC packet session info */
401: if (rpc_chkPktSession(&rpc->call_session, &s->srv_session)) {
402: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
1.7 misho 403:
1.18 misho 404: rpc->call_argc ^= rpc->call_argc;
405: rpc->call_rep.ret = RPC_ERROR(-1);
406: rpc->call_rep.eno = RPC_ERROR(errno);
407: } else {
408: /* execute RPC call */
409: schedEvent(TASK_ROOT(task), execCall, TASK_ARG(task), (int) noreply, rpc, len);
410: }
1.7 misho 411:
1.18 misho 412: /* send RPC reply */
413: if (!noreply)
414: schedWrite(TASK_ROOT(task), cbProto[s->srv_proto][CB_TXPACKET],
415: TASK_ARG(task), TASK_FD(task), rpc, len);
1.7 misho 416:
417: /* lets get next packet */
1.18 misho 418: schedReadSelf(task);
1.7 misho 419: return NULL;
420: }
421:
1.1 misho 422: static void *
1.10 misho 423: acceptClients(sched_task_t *task)
1.1 misho 424: {
1.10 misho 425: rpc_srv_t *srv = TASK_ARG(task);
426: rpc_cli_t *c = NULL;
1.14 misho 427: socklen_t salen = sizeof(sockaddr_t);
1.21 misho 428: int sock;
429: #ifdef TCP_SESSION_TIMEOUT
430: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
431: #endif
1.7 misho 432:
1.13 misho 433: c = _allocClient(srv, NULL);
1.21 misho 434: if (!c) {
435: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
436: if ((sock = accept(TASK_FD(task), NULL, NULL)) != -1) {
437: shutdown(sock, SHUT_RDWR);
438: close(sock);
439: }
1.10 misho 440: goto end;
1.21 misho 441: }
1.10 misho 442:
443: /* accept client */
444: c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen);
445: if (c->cli_sock == -1) {
446: LOGERR;
447: AIT_FREE_VAL(&c->cli_buf);
1.14 misho 448: array_Del(srv->srv_clients, c->cli_id, 42);
1.10 misho 449: goto end;
1.1 misho 450: } else
1.10 misho 451: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
1.1 misho 452:
1.21 misho 453: #ifdef TCP_SESSION_TIMEOUT
454: /* armed timer for close stateless connection */
455: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
456: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT], c,
457: ts, c, 0);
458: #endif
1.13 misho 459: schedRead(TASK_ROOT(task), cbProto[srv->srv_proto][CB_RXPACKET], c,
460: c->cli_sock, NULL, 0);
1.10 misho 461: end:
462: schedReadSelf(task);
463: return NULL;
464: }
1.5 misho 465:
1.7 misho 466:
1.10 misho 467: static void *
1.13 misho 468: txUDPPacket(sched_task_t *task)
1.10 misho 469: {
470: rpc_cli_t *c = TASK_ARG(task);
471: rpc_srv_t *s = c->cli_parent;
1.13 misho 472: rpc_func_t *f = NULL;
1.18 misho 473: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1.13 misho 474: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
1.22 misho 475: int ret, estlen, wlen = sizeof(struct tagRPCCall);
1.13 misho 476: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
1.22 misho 477: struct pollfd pfd;
1.13 misho 478:
479: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
480: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
481: TASK_ARG(task), ts, TASK_ARG(task), 0);
482:
483: if (rpc->call_argc) {
484: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
485: if (!f) {
486: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
487: rpc->call_argc ^= rpc->call_argc;
488: rpc->call_rep.ret = RPC_ERROR(-1);
489: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
490: } else {
1.22 misho 491: /* calc estimated length */
492: estlen = ait_resideVars(RPC_RETVARS(c)) + wlen;
493: if (estlen > AIT_LEN(&c->cli_buf))
494: AIT_RE_BUF(&c->cli_buf, estlen);
495: buf = AIT_GET_BUF(&c->cli_buf);
496: rpc = (struct tagRPCCall*) buf;
497:
1.25 ! misho 498: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
1.13 misho 499: /* Go Encapsulate variables */
1.18 misho 500: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
501: RPC_RETVARS(c));
1.13 misho 502: /* Free return values */
1.14 misho 503: ait_freeVars(&c->cli_vars);
1.13 misho 504: if (ret == -1) {
505: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
506: rpc->call_argc ^= rpc->call_argc;
507: rpc->call_rep.ret = RPC_ERROR(-1);
508: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
509: } else
510: wlen += ret;
511: }
512: }
1.7 misho 513:
1.18 misho 514: rpc->call_len = htonl(wlen);
1.25 ! misho 515: rpc->call_io = RPC_ACK;
1.7 misho 516:
1.13 misho 517: /* calculate CRC */
518: rpc->call_crc ^= rpc->call_crc;
519: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
520:
521: /* send reply */
1.22 misho 522: pfd.fd = TASK_FD(task);
523: pfd.events = POLLOUT;
524: for (; wlen > 0; wlen -= ret, buf += ret) {
525: if ((ret = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 ||
526: pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
527: if (ret)
528: LOGERR;
529: else
530: rpc_SetErr(ETIMEDOUT, "Timeout reached! Client not respond");
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: ret = sendto(TASK_FD(task), buf, MIN(wlen, s->srv_netbuf), MSG_NOSIGNAL,
537: &c->cli_sa.sa, c->cli_sa.sa.sa_len);
538: if (ret == -1) {
539: /* close connection */
540: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
541: TASK_ARG(task), 0, NULL, 0);
542: return NULL;
543: }
1.13 misho 544: }
545:
546: return NULL;
547: }
548:
549: static void *
550: rxUDPPacket(sched_task_t *task)
551: {
552: rpc_srv_t *srv = TASK_ARG(task);
553: rpc_cli_t *c = NULL;
1.22 misho 554: int len, rlen, noreply, estlen;
555: u_short crc;
556: u_char *buf, b[sizeof(struct tagRPCCall)];
557: struct tagRPCCall *rpc = (struct tagRPCCall*) b;
1.14 misho 558: sockaddr_t sa;
559: socklen_t salen;
1.13 misho 560: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
1.22 misho 561: struct pollfd pfd;
1.13 misho 562:
563: /* receive connect packet */
1.14 misho 564: salen = sa.ss.ss_len = sizeof(sockaddr_t);
1.22 misho 565: rlen = recvfrom(TASK_FD(task), b, sizeof b, MSG_PEEK, &sa.sa, &salen);
566: if (rlen < sizeof(struct tagRPCCall)) {
567: rpc_SetErr(ERPCMISMATCH, "Short RPC packet");
1.13 misho 568: goto end;
1.22 misho 569: }
1.13 misho 570:
571: c = _allocClient(srv, &sa);
1.22 misho 572: if (!c) {
573: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
574: usleep(2000); /* blocked client delay */
1.13 misho 575: goto end;
1.22 misho 576: } else {
577: estlen = ntohl(rpc->call_len);
578: if (estlen > AIT_LEN(&c->cli_buf))
579: AIT_RE_BUF(&c->cli_buf, estlen);
580: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
581: buf = AIT_GET_BUF(&c->cli_buf);
582: len = estlen;
583:
1.13 misho 584: c->cli_sock = TASK_FD(task);
585: memcpy(&c->cli_sa, &sa, sizeof c->cli_sa);
1.22 misho 586:
1.13 misho 587: /* armed timer for close stateless connection */
588: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
589: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
590: c, ts, c, 0);
591: }
592:
1.22 misho 593: /* get next part of packet */
594: memset(buf, 0, len);
595: pfd.fd = TASK_FD(task);
596: pfd.events = POLLIN | POLLPRI;
597: for (; len > 0; len -= rlen, buf += rlen) {
598: if ((rlen = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 ||
599: pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
600: if (rlen)
601: LOGERR;
602: else
603: rpc_SetErr(ETIMEDOUT, "Timeout reached! Client not respond");
604: schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
605: c, 0, NULL, 0);
1.24 misho 606: goto end;
1.13 misho 607: }
1.22 misho 608: salen = sa.ss.ss_len = sizeof(sockaddr_t);
609: rlen = recvfrom(TASK_FD(task), buf, len, 0, &sa.sa, &salen);
610: if (rlen == -1) {
611: /* close connection */
612: schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
613: c, 0, NULL, 0);
1.24 misho 614: goto end;
1.13 misho 615: }
1.22 misho 616: if (e_addrcmp(&c->cli_sa, &sa, 42))
617: rlen ^= rlen; /* skip if arrive from different address */
618: }
619: len = estlen;
1.13 misho 620:
1.25 ! misho 621: /* skip loop packet */
! 622: if (rpc->call_io & RPC_ACK)
! 623: goto end;
! 624:
1.22 misho 625: /* check integrity of packet */
626: crc = ntohs(rpc->call_crc);
627: rpc->call_crc ^= rpc->call_crc;
628: if (crc != crcFletcher16((u_short*) rpc, len / 2)) {
629: rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet");
1.24 misho 630: /* close connection */
631: schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
632: c, 0, NULL, 0);
633: goto end;
634: }
635:
636: noreply = RPC_CHK_NOREPLY(rpc);
637:
638: /* check RPC packet session info */
639: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session)) {
640: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
641:
642: rpc->call_argc ^= rpc->call_argc;
643: rpc->call_rep.ret = RPC_ERROR(-1);
644: rpc->call_rep.eno = RPC_ERROR(errno);
645: } else {
646: /* execute RPC call */
647: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
648: }
649:
650: /* send RPC reply */
651: if (!noreply)
652: schedWrite(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
653: c, TASK_FD(task), rpc, len);
654: end:
655: schedReadSelf(task);
656: return NULL;
657: }
658:
659:
660: static void *
661: txBPFPacket(sched_task_t *task)
662: {
663: rpc_cli_t *c = TASK_ARG(task);
664: rpc_srv_t *s = c->cli_parent;
665: rpc_func_t *f = NULL;
666: u_char *buf = AIT_GET_BUF(&c->cli_buf);
667: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
668: int ret, len, wlen = sizeof(struct tagRPCCall);
669: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
670: struct ether_header *eh;
671: ait_val_t b = AIT_VAL_INIT;
672:
673: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
674: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
675: TASK_ARG(task), ts, TASK_ARG(task), 0);
676:
677: if (rpc->call_argc) {
678: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
679: if (!f) {
680: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
681: rpc->call_argc ^= rpc->call_argc;
682: rpc->call_rep.ret = RPC_ERROR(-1);
683: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
684: } else {
685: /* calc estimated length */
686: len = ait_resideVars(RPC_RETVARS(c)) + wlen;
687: if (len > AIT_LEN(&c->cli_buf))
688: AIT_RE_BUF(&c->cli_buf, len);
689: buf = AIT_GET_BUF(&c->cli_buf);
690: rpc = (struct tagRPCCall*) buf;
691:
1.25 ! misho 692: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
1.24 misho 693: /* Go Encapsulate variables */
694: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
695: RPC_RETVARS(c));
696: /* Free return values */
697: ait_freeVars(&RPC_RETVARS(c));
698: if (ret == -1) {
699: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
700: rpc->call_argc ^= rpc->call_argc;
701: rpc->call_rep.ret = RPC_ERROR(-1);
702: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
703: } else
704: wlen += ret;
705: }
706: }
707:
708: rpc->call_len = htonl(wlen);
1.25 ! misho 709: rpc->call_io = RPC_ACK;
1.24 misho 710:
711: /* calculate CRC */
712: rpc->call_crc ^= rpc->call_crc;
713: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
714:
715: /* send reply */
716: AIT_SET_BUF(&b, NULL, MIN(wlen, s->srv_netbuf) + ETHER_HDR_LEN);
717: eh = (struct ether_header*) AIT_GET_BUF(&b);
718: memcpy(eh->ether_dhost, LLADDR(&c->cli_sa.sdl), ETHER_ADDR_LEN);
719: eh->ether_type = htons(RPC_DEFPORT);
720: memcpy(eh + 1, buf, MIN(wlen, s->srv_netbuf));
721:
722: ret = write(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b));
723: AIT_FREE_VAL(&b);
724: if (ret == -1) {
725: /* close connection */
726: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
727: TASK_ARG(task), 0, NULL, 0);
1.22 misho 728: return NULL;
729: }
1.13 misho 730:
1.24 misho 731: return NULL;
732: }
733:
734: static void *
735: rxBPFPacket(sched_task_t *task)
736: {
737: rpc_srv_t *srv = TASK_ARG(task);
738: rpc_cli_t *c = NULL;
739: int len, rlen, noreply;
740: u_short crc;
741: struct tagRPCCall *rpc;
742: sockaddr_t sa;
743: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
744: struct bpf_hdr *h;
745: struct ether_header *eh;
746: ait_val_t b = AIT_VAL_INIT;
747:
748: /* receive connect packet */
749: AIT_SET_BUF(&b, NULL, srv->srv_netbuf);
750: rlen = read(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b));
751: h = (struct bpf_hdr*) AIT_GET_BUF(&b);
752: rlen -= h->bh_hdrlen;
753: if (rlen < h->bh_datalen || h->bh_caplen != h->bh_datalen ||
754: rlen < ETHER_HDR_LEN + sizeof(struct tagRPCCall)) {
755: rpc_SetErr(ERPCMISMATCH, "Short RPC packet");
756: goto end;
757: } else {
758: rlen = h->bh_caplen;
759: eh = (struct ether_header*) (AIT_GET_BUF(&b) + h->bh_hdrlen);
760: rlen -= ETHER_HDR_LEN;
761: rpc = (struct tagRPCCall*) (eh + 1);
1.25 ! misho 762:
! 763: #if 0
! 764: /* skip loop packet */
! 765: if (rpc->call_io & RPC_ACK)
! 766: goto end;
! 767: #endif
! 768:
1.24 misho 769: if (eh->ether_type != ntohs(RPC_DEFPORT))
770: goto end;
771: else
772: e_getlinkbymac((const ether_addr_t*) eh->ether_shost, &sa);
773: }
774:
775: c = _allocClient(srv, &sa);
776: if (!c) {
777: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
778: usleep(2000); /* blocked client delay */
779: goto end;
780: } else {
781: len = ntohl(rpc->call_len);
782: if (len > AIT_LEN(&c->cli_buf))
783: AIT_RE_BUF(&c->cli_buf, len);
784: memcpy(AIT_GET_BUF(&c->cli_buf), rpc, AIT_LEN(&c->cli_buf));
785: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
786:
787: c->cli_sock = TASK_FD(task);
788: memcpy(&c->cli_sa, &sa, sizeof c->cli_sa);
789:
790: /* armed timer for close stateless connection */
791: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
792: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
793: c, ts, c, 0);
794: }
795:
796: /* check integrity of packet */
797: crc = ntohs(rpc->call_crc);
798: rpc->call_crc ^= rpc->call_crc;
799: if (crc != crcFletcher16((u_short*) rpc, len / 2)) {
800: rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet");
801: /* close connection */
802: schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
803: c, 0, NULL, 0);
804: goto end;
805: }
806:
1.22 misho 807: noreply = RPC_CHK_NOREPLY(rpc);
1.18 misho 808:
1.22 misho 809: /* check RPC packet session info */
810: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session)) {
811: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
1.13 misho 812:
1.22 misho 813: rpc->call_argc ^= rpc->call_argc;
814: rpc->call_rep.ret = RPC_ERROR(-1);
815: rpc->call_rep.eno = RPC_ERROR(errno);
816: } else {
817: /* execute RPC call */
818: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
819: }
1.13 misho 820:
1.22 misho 821: /* send RPC reply */
822: if (!noreply)
1.24 misho 823: schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
1.22 misho 824: c, TASK_FD(task), rpc, len);
1.13 misho 825: end:
1.24 misho 826: AIT_FREE_VAL(&b);
1.13 misho 827: schedReadSelf(task);
828: return NULL;
829: }
830:
1.25 ! misho 831:
! 832: static void *
! 833: txEXTPacket(sched_task_t *task)
! 834: {
! 835: rpc_cli_t *c = TASK_ARG(task);
! 836: rpc_srv_t *s = c->cli_parent;
! 837: rpc_func_t *f = NULL;
! 838: u_char *buf = AIT_GET_BUF(&c->cli_buf);
! 839: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
! 840: int ret, len, wlen = sizeof(struct tagRPCCall);
! 841: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
! 842:
! 843: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
! 844: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
! 845: TASK_ARG(task), ts, TASK_ARG(task), 0);
! 846:
! 847: if (rpc->call_argc) {
! 848: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
! 849: if (!f) {
! 850: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
! 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: /* calc estimated length */
! 856: len = ait_resideVars(RPC_RETVARS(c)) + wlen;
! 857: if (len > AIT_LEN(&c->cli_buf))
! 858: AIT_RE_BUF(&c->cli_buf, len);
! 859: buf = AIT_GET_BUF(&c->cli_buf);
! 860: rpc = (struct tagRPCCall*) buf;
! 861:
! 862: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
! 863: /* Go Encapsulate variables */
! 864: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
! 865: RPC_RETVARS(c));
! 866: /* Free return values */
! 867: ait_freeVars(&RPC_RETVARS(c));
! 868: if (ret == -1) {
! 869: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
! 870: rpc->call_argc ^= rpc->call_argc;
! 871: rpc->call_rep.ret = RPC_ERROR(-1);
! 872: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
! 873: } else
! 874: wlen += ret;
! 875: }
! 876: }
! 877:
! 878: rpc->call_len = htonl(wlen);
! 879: rpc->call_io = RPC_ACK;
! 880:
! 881: /* send reply */
! 882: ret = write(TASK_FD(task), buf, MIN(wlen, s->srv_netbuf));
! 883: if (ret == -1) {
! 884: /* close connection */
! 885: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
! 886: TASK_ARG(task), 0, NULL, 0);
! 887: return NULL;
! 888: }
! 889:
! 890: return NULL;
! 891: }
! 892:
! 893: static void *
! 894: rxEXTPacket(sched_task_t *task)
! 895: {
! 896: rpc_srv_t *srv = TASK_ARG(task);
! 897: rpc_cli_t *c = NULL;
! 898: int len, rlen, noreply;
! 899: struct tagRPCCall *rpc;
! 900: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
! 901: ait_val_t b = AIT_VAL_INIT;
! 902: sockaddr_t sa;
! 903:
! 904: memset(&sa, 0, sizeof sa);
! 905: /* receive connect packet */
! 906: AIT_SET_BUF(&b, NULL, srv->srv_netbuf);
! 907: rlen = read(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b));
! 908: if (rlen < sizeof(struct tagRPCCall)) {
! 909: rpc_SetErr(ERPCMISMATCH, "Short RPC packet");
! 910: goto end;
! 911: } else {
! 912: rpc = (struct tagRPCCall*) AIT_GET_BUF(&b);
! 913:
! 914: /* skip loop packet */
! 915: if (rpc->call_io & RPC_ACK)
! 916: goto end;
! 917: }
! 918:
! 919: c = _allocClient(srv, &sa);
! 920: if (!c) {
! 921: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
! 922: usleep(2000); /* blocked client delay */
! 923: goto end;
! 924: } else {
! 925: len = ntohl(rpc->call_len);
! 926: if (len > AIT_LEN(&c->cli_buf))
! 927: AIT_RE_BUF(&c->cli_buf, len);
! 928: memcpy(AIT_GET_BUF(&c->cli_buf), rpc, AIT_LEN(&c->cli_buf));
! 929: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
! 930:
! 931: c->cli_sock = TASK_FD(task);
! 932:
! 933: /* armed timer for close stateless connection */
! 934: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
! 935: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
! 936: c, ts, c, 0);
! 937: }
! 938:
! 939: noreply = RPC_CHK_NOREPLY(rpc);
! 940:
! 941: /* check RPC packet session info */
! 942: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session)) {
! 943: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
! 944:
! 945: rpc->call_argc ^= rpc->call_argc;
! 946: rpc->call_rep.ret = RPC_ERROR(-1);
! 947: rpc->call_rep.eno = RPC_ERROR(errno);
! 948: } else {
! 949: /* execute RPC call */
! 950: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
! 951: }
! 952:
! 953: /* send RPC reply */
! 954: if (!noreply)
! 955: schedWrite(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
! 956: c, TASK_FD(task), rpc, len);
! 957: end:
! 958: AIT_FREE_VAL(&b);
! 959: schedReadSelf(task);
! 960: return NULL;
! 961: }
! 962:
1.13 misho 963: /* ------------------------------------------------------ */
964:
1.16 misho 965: void
1.13 misho 966: rpc_freeBLOBCli(rpc_cli_t * __restrict c)
967: {
968: rpc_srv_t *s = c->cli_parent;
969:
970: schedCancelby(s->srv_blob.root, taskMAX, CRITERIA_ARG, c, NULL);
1.10 misho 971:
972: /* free buffer */
973: AIT_FREE_VAL(&c->cli_buf);
974:
1.14 misho 975: array_Del(s->srv_blob.clients, c->cli_id, 0);
1.10 misho 976: if (c)
1.14 misho 977: e_free(c);
1.13 misho 978: }
979:
980:
981: static void *
982: closeBLOBClient(sched_task_t *task)
983: {
984: int sock = ((rpc_cli_t*) TASK_ARG(task))->cli_sock;
985:
986: rpc_freeBLOBCli(TASK_ARG(task));
987:
988: /* close client socket */
989: shutdown(sock, SHUT_RDWR);
990: close(sock);
1.7 misho 991: return NULL;
992: }
993:
994: static void *
995: txBLOB(sched_task_t *task)
996: {
1.10 misho 997: rpc_cli_t *c = TASK_ARG(task);
998: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1.7 misho 999: int wlen = sizeof(struct tagBLOBHdr);
1000:
1001: /* send reply */
1.10 misho 1002: wlen = send(TASK_FD(task), buf, wlen, MSG_NOSIGNAL);
1003: if (wlen == -1 || wlen != sizeof(struct tagBLOBHdr)) {
1004: /* close blob connection */
1005: schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0);
1006: }
1.7 misho 1007:
1008: return NULL;
1009: }
1.4 misho 1010:
1.7 misho 1011: static void *
1012: rxBLOB(sched_task_t *task)
1013: {
1014: rpc_cli_t *c = TASK_ARG(task);
1015: rpc_srv_t *s = c->cli_parent;
1016: rpc_blob_t *b;
1.10 misho 1017: struct tagBLOBHdr blob;
1.7 misho 1018: int rlen;
1019:
1.10 misho 1020: memset(&blob, 0, sizeof blob);
1021: rlen = recv(TASK_FD(task), &blob, sizeof blob, 0);
1022: if (rlen < 1) {
1023: /* close blob connection */
1024: schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0);
1.7 misho 1025: return NULL;
1026: }
1.5 misho 1027:
1.10 misho 1028: /* check BLOB packet */
1029: if (rlen < sizeof(struct tagBLOBHdr)) {
1030: rpc_SetErr(ERPCMISMATCH, "Short BLOB packet");
1.6 misho 1031:
1.10 misho 1032: schedReadSelf(task);
1.7 misho 1033: return NULL;
1034: }
1.1 misho 1035:
1.7 misho 1036: /* check RPC packet session info */
1.15 misho 1037: if (rpc_chkPktSession(&blob.hdr_session, &s->srv_session)) {
1.7 misho 1038: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
1.10 misho 1039: blob.hdr_cmd = error;
1.7 misho 1040: goto end;
1041: }
1042:
1043: /* Go to proceed packet ... */
1.10 misho 1044: switch (blob.hdr_cmd) {
1.7 misho 1045: case get:
1.10 misho 1046: if (!(b = rpc_srv_getBLOB(s, ntohl(blob.hdr_var)))) {
1047: rpc_SetErr(EINVAL, "Var=%x not found", ntohl(blob.hdr_var));
1048: blob.hdr_cmd = no;
1049: blob.hdr_ret = RPC_ERROR(-1);
1.7 misho 1050: break;
1051: } else
1.10 misho 1052: blob.hdr_len = htonl(b->blob_len);
1.5 misho 1053:
1.7 misho 1054: if (rpc_srv_blobMap(s, b) != -1) {
1055: /* deliver BLOB variable to client */
1.10 misho 1056: blob.hdr_ret = htonl(rpc_srv_sendBLOB(c, b));
1.7 misho 1057: rpc_srv_blobUnmap(b);
1058: } else {
1.10 misho 1059: blob.hdr_cmd = error;
1060: blob.hdr_ret = RPC_ERROR(-1);
1.7 misho 1061: }
1062: break;
1063: case set:
1.17 misho 1064: if ((b = rpc_srv_registerBLOB(s, ntohl(blob.hdr_len),
1065: ntohl(blob.hdr_ret)))) {
1.7 misho 1066: /* set new BLOB variable for reply :) */
1.10 misho 1067: blob.hdr_var = htonl(b->blob_var);
1.7 misho 1068:
1069: /* receive BLOB from client */
1.10 misho 1070: blob.hdr_ret = htonl(rpc_srv_recvBLOB(c, b));
1.7 misho 1071: rpc_srv_blobUnmap(b);
1.5 misho 1072: } else {
1.10 misho 1073: blob.hdr_cmd = error;
1074: blob.hdr_ret = RPC_ERROR(-1);
1.7 misho 1075: }
1076: break;
1077: case unset:
1.11 misho 1078: if (rpc_srv_unregisterBLOB(s, ntohl(blob.hdr_var)) == -1) {
1.10 misho 1079: blob.hdr_cmd = error;
1080: blob.hdr_ret = RPC_ERROR(-1);
1.1 misho 1081: }
1082: break;
1.7 misho 1083: default:
1.10 misho 1084: rpc_SetErr(EPROCUNAVAIL, "Unsupported BLOB command %d", blob.hdr_cmd);
1085: blob.hdr_cmd = error;
1086: blob.hdr_ret = RPC_ERROR(-1);
1.7 misho 1087: }
1.1 misho 1088:
1.7 misho 1089: end:
1.10 misho 1090: memcpy(AIT_ADDR(&c->cli_buf), &blob, sizeof blob);
1091: schedWrite(TASK_ROOT(task), txBLOB, TASK_ARG(task), TASK_FD(task), NULL, 0);
1092: schedReadSelf(task);
1.7 misho 1093: return NULL;
1.2 misho 1094: }
1095:
1096: static void *
1.17 misho 1097: flushBLOB(sched_task_t *task)
1098: {
1.23 misho 1099: uintptr_t sigArg = atomic_load_acq_ptr(&_glSigArg);
1100: rpc_srv_t *srv = sigArg ? (void*) sigArg : TASK_ARG(task);
1.17 misho 1101: rpc_blob_t *b, *tmp;
1102:
1103: TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) {
1104: TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node);
1105:
1106: rpc_srv_blobFree(srv, b);
1107: e_free(b);
1108: }
1109:
1.23 misho 1110: if (!schedSignalSelf(task)) {
1111: /* disabled kqueue support in libaitsched */
1112: struct sigaction sa;
1113:
1114: memset(&sa, 0, sizeof sa);
1115: sigemptyset(&sa.sa_mask);
1116: sa.sa_handler = (void (*)(int)) flushBLOB;
1117: sa.sa_flags = SA_RESTART | SA_RESETHAND;
1118: sigaction(SIGFBLOB, &sa, NULL);
1119: }
1120:
1.17 misho 1121: return NULL;
1122: }
1123:
1124: static void *
1.10 misho 1125: acceptBLOBClients(sched_task_t *task)
1.2 misho 1126: {
1.10 misho 1127: rpc_srv_t *srv = TASK_ARG(task);
1128: rpc_cli_t *c = NULL;
1129: register int i;
1.14 misho 1130: socklen_t salen = sizeof(sockaddr_t);
1.21 misho 1131: int sock;
1.12 misho 1132: #ifdef TCP_NOPUSH
1133: int n = 1;
1134: #endif
1.7 misho 1135:
1.10 misho 1136: /* check free slots for connect */
1.14 misho 1137: for (i = 0; i < array_Size(srv->srv_blob.clients) &&
1138: (c = array(srv->srv_blob.clients, i, rpc_cli_t*)); i++);
1.21 misho 1139: if (c) { /* no more free slots! */
1140: EVERBOSE(1, "BLOB client quota exceeded! Connection will be shutdown!\n");
1141: if ((sock = accept(TASK_FD(task), NULL, NULL)) != -1) {
1142: shutdown(sock, SHUT_RDWR);
1143: close(sock);
1144: }
1.10 misho 1145: goto end;
1.21 misho 1146: }
1147:
1.14 misho 1148: c = e_malloc(sizeof(rpc_cli_t));
1.10 misho 1149: if (!c) {
1.7 misho 1150: LOGERR;
1.10 misho 1151: srv->srv_kill = srv->srv_blob.kill = 1;
1.7 misho 1152: return NULL;
1153: } else {
1.10 misho 1154: memset(c, 0, sizeof(rpc_cli_t));
1.14 misho 1155: array_Set(srv->srv_blob.clients, i, c);
1.10 misho 1156: c->cli_id = i;
1157: c->cli_parent = srv;
1.7 misho 1158: }
1.4 misho 1159:
1.10 misho 1160: /* alloc empty buffer */
1.14 misho 1161: AIT_SET_BUFSIZ(&c->cli_buf, 0, srv->srv_netbuf);
1.2 misho 1162:
1.10 misho 1163: /* accept client */
1164: c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen);
1165: if (c->cli_sock == -1) {
1166: LOGERR;
1167: AIT_FREE_VAL(&c->cli_buf);
1.14 misho 1168: array_Del(srv->srv_blob.clients, i, 42);
1.10 misho 1169: goto end;
1.12 misho 1170: } else {
1171: #ifdef TCP_NOPUSH
1172: setsockopt(c->cli_sock, IPPROTO_TCP, TCP_NOPUSH, &n, sizeof n);
1173: #endif
1.10 misho 1174: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
1.12 misho 1175: }
1.2 misho 1176:
1.10 misho 1177: schedRead(TASK_ROOT(task), rxBLOB, c, c->cli_sock, NULL, 0);
1178: end:
1179: schedReadSelf(task);
1.7 misho 1180: return NULL;
1.1 misho 1181: }
1182:
1.10 misho 1183: /* ------------------------------------------------------ */
1.1 misho 1184:
1185: /*
1.7 misho 1186: * rpc_srv_initBLOBServer() - Init & create BLOB Server
1187: *
1.4 misho 1188: * @srv = RPC server instance
1.2 misho 1189: * @Port = Port for bind server, if Port == 0 default port is selected
1190: * @diskDir = Disk place for BLOB file objects
1191: * return: -1 == error or 0 bind and created BLOB server instance
1192: */
1193: int
1194: rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, u_short Port, const char *diskDir)
1195: {
1196: int n = 1;
1197:
1.10 misho 1198: if (!srv || srv->srv_kill) {
1.7 misho 1199: rpc_SetErr(EINVAL, "Invalid parameters can`t init BLOB server");
1.2 misho 1200: return -1;
1201: }
1202:
1203: memset(&srv->srv_blob, 0, sizeof srv->srv_blob);
1204: if (access(diskDir, R_OK | W_OK) == -1) {
1205: LOGERR;
1206: return -1;
1207: } else
1.7 misho 1208: AIT_SET_STR(&srv->srv_blob.dir, diskDir);
1.2 misho 1209:
1.10 misho 1210: /* init blob list */
1211: TAILQ_INIT(&srv->srv_blob.blobs);
1212:
1.2 misho 1213: srv->srv_blob.server.cli_parent = srv;
1.4 misho 1214:
1.14 misho 1215: memcpy(&srv->srv_blob.server.cli_sa, &srv->srv_server.cli_sa, sizeof(sockaddr_t));
1.10 misho 1216: switch (srv->srv_blob.server.cli_sa.sa.sa_family) {
1.4 misho 1217: case AF_INET:
1.10 misho 1218: srv->srv_blob.server.cli_sa.sin.sin_port =
1219: htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin.sin_port) + 1);
1.4 misho 1220: break;
1221: case AF_INET6:
1.10 misho 1222: srv->srv_blob.server.cli_sa.sin6.sin6_port =
1223: htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin6.sin6_port) + 1);
1.4 misho 1224: break;
1225: case AF_LOCAL:
1.10 misho 1226: strlcat(srv->srv_blob.server.cli_sa.sun.sun_path, ".blob",
1227: sizeof srv->srv_blob.server.cli_sa.sun.sun_path);
1.4 misho 1228: break;
1229: default:
1.7 misho 1230: AIT_FREE_VAL(&srv->srv_blob.dir);
1.4 misho 1231: return -1;
1.2 misho 1232: }
1233:
1.4 misho 1234: /* create BLOB server socket */
1.6 misho 1235: srv->srv_blob.server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, SOCK_STREAM, 0);
1.2 misho 1236: if (srv->srv_blob.server.cli_sock == -1) {
1237: LOGERR;
1.7 misho 1238: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 1239: return -1;
1240: }
1241: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
1242: LOGERR;
1243: close(srv->srv_blob.server.cli_sock);
1.7 misho 1244: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 1245: return -1;
1246: }
1.5 misho 1247: n = srv->srv_netbuf;
1248: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
1249: LOGERR;
1250: close(srv->srv_blob.server.cli_sock);
1.7 misho 1251: AIT_FREE_VAL(&srv->srv_blob.dir);
1.5 misho 1252: return -1;
1253: }
1254: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
1255: LOGERR;
1256: close(srv->srv_blob.server.cli_sock);
1.7 misho 1257: AIT_FREE_VAL(&srv->srv_blob.dir);
1.5 misho 1258: return -1;
1259: }
1.6 misho 1260: if (bind(srv->srv_blob.server.cli_sock, &srv->srv_blob.server.cli_sa.sa,
1261: srv->srv_blob.server.cli_sa.sa.sa_len) == -1) {
1.2 misho 1262: LOGERR;
1263: close(srv->srv_blob.server.cli_sock);
1.7 misho 1264: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 1265: return -1;
1.13 misho 1266: } else
1267: fcntl(srv->srv_blob.server.cli_sock, F_SETFL,
1268: fcntl(srv->srv_blob.server.cli_sock, F_GETFL) | O_NONBLOCK);
1269:
1.2 misho 1270:
1.10 misho 1271: /* allocate pool for concurent blob clients */
1.14 misho 1272: srv->srv_blob.clients = array_Init(array_Size(srv->srv_clients));
1.2 misho 1273: if (!srv->srv_blob.clients) {
1.14 misho 1274: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1.2 misho 1275: close(srv->srv_blob.server.cli_sock);
1.7 misho 1276: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 1277: return -1;
1.10 misho 1278: }
1.2 misho 1279:
1.10 misho 1280: /* init blob scheduler */
1281: srv->srv_blob.root = schedBegin();
1282: if (!srv->srv_blob.root) {
1283: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1.14 misho 1284: array_Destroy(&srv->srv_blob.clients);
1.10 misho 1285: close(srv->srv_blob.server.cli_sock);
1286: AIT_FREE_VAL(&srv->srv_blob.dir);
1287: return -1;
1288: }
1.2 misho 1289:
1290: return 0;
1291: }
1292:
1293: /*
1.7 misho 1294: * rpc_srv_endBLOBServer() - Destroy BLOB server, close all opened sockets and free resources
1295: *
1.2 misho 1296: * @srv = RPC Server instance
1297: * return: none
1298: */
1.16 misho 1299: void
1.2 misho 1300: rpc_srv_endBLOBServer(rpc_srv_t * __restrict srv)
1301: {
1.10 misho 1302: if (!srv)
1.2 misho 1303: return;
1304:
1.10 misho 1305: srv->srv_blob.kill = 1;
1.17 misho 1306:
1307: schedEnd(&srv->srv_blob.root);
1.2 misho 1308: }
1309:
1310: /*
1.10 misho 1311: * rpc_srv_loopBLOBServer() - Execute Main BLOB server loop and wait for clients requests
1.7 misho 1312: *
1.2 misho 1313: * @srv = RPC Server instance
1314: * return: -1 error or 0 ok, infinite loop ...
1315: */
1316: int
1.10 misho 1317: rpc_srv_loopBLOBServer(rpc_srv_t * __restrict srv)
1.2 misho 1318: {
1.10 misho 1319: rpc_cli_t *c;
1.2 misho 1320: register int i;
1.10 misho 1321: rpc_blob_t *b, *tmp;
1322: struct timespec ts = { RPC_SCHED_POLLING, 0 };
1.2 misho 1323:
1.10 misho 1324: if (!srv || srv->srv_kill) {
1.7 misho 1325: rpc_SetErr(EINVAL, "Invalid parameter can`t start BLOB server");
1.2 misho 1326: return -1;
1327: }
1328:
1.14 misho 1329: if (listen(srv->srv_blob.server.cli_sock, array_Size(srv->srv_blob.clients)) == -1) {
1.2 misho 1330: LOGERR;
1331: return -1;
1.10 misho 1332: }
1333:
1.23 misho 1334: if (!schedSignal(srv->srv_blob.root, flushBLOB, srv, SIGFBLOB, NULL, 0)) {
1335: /* disabled kqueue support in libaitsched */
1336: struct sigaction sa;
1337:
1338: atomic_store_rel_ptr(&_glSigArg, (uintptr_t) srv);
1339:
1340: memset(&sa, 0, sizeof sa);
1341: sigemptyset(&sa.sa_mask);
1342: sa.sa_handler = (void (*)(int)) flushBLOB;
1343: sa.sa_flags = SA_RESTART | SA_RESETHAND;
1344: sigaction(SIGFBLOB, &sa, NULL);
1345: }
1346:
1.10 misho 1347: if (!schedRead(srv->srv_blob.root, acceptBLOBClients, srv,
1348: srv->srv_blob.server.cli_sock, NULL, 0)) {
1349: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1350: return -1;
1351: }
1.2 misho 1352:
1.10 misho 1353: schedPolling(srv->srv_blob.root, &ts, NULL);
1354: /* main rpc loop */
1355: schedRun(srv->srv_blob.root, &srv->srv_blob.kill);
1.7 misho 1356:
1.17 misho 1357: /* detach blobs */
1358: TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) {
1359: TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node);
1360:
1361: rpc_srv_blobFree(srv, b);
1362: e_free(b);
1363: }
1364:
1.10 misho 1365: /* close all clients connections & server socket */
1.14 misho 1366: for (i = 0; i < array_Size(srv->srv_blob.clients); i++) {
1367: c = array(srv->srv_blob.clients, i, rpc_cli_t*);
1.10 misho 1368: if (c) {
1369: shutdown(c->cli_sock, SHUT_RDWR);
1370: close(c->cli_sock);
1371:
1372: schedCancelby(srv->srv_blob.root, taskMAX, CRITERIA_ARG, c, NULL);
1373: AIT_FREE_VAL(&c->cli_buf);
1.2 misho 1374: }
1.14 misho 1375: array_Del(srv->srv_blob.clients, i, 42);
1.10 misho 1376: }
1.14 misho 1377: array_Destroy(&srv->srv_blob.clients);
1.2 misho 1378:
1.10 misho 1379: close(srv->srv_blob.server.cli_sock);
1.2 misho 1380:
1.10 misho 1381: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 1382: return 0;
1383: }
1384:
1385:
1386: /*
1.7 misho 1387: * rpc_srv_initServer() - Init & create RPC Server
1388: *
1.15 misho 1389: * @InstID = Instance for authentication & recognition
1.1 misho 1390: * @concurentClients = Concurent clients at same time to this server
1.10 misho 1391: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
1.4 misho 1392: * @csHost = Host name or address for bind server, if NULL any address
1.1 misho 1393: * @Port = Port for bind server, if Port == 0 default port is selected
1.13 misho 1394: * @proto = Protocol, if == 0 choose SOCK_STREAM
1.1 misho 1395: * return: NULL == error or !=NULL bind and created RPC server instance
1396: */
1397: rpc_srv_t *
1.15 misho 1398: rpc_srv_initServer(u_char InstID, int concurentClients, int netBuf,
1399: const char *csHost, u_short Port, int proto)
1.1 misho 1400: {
1.10 misho 1401: int n = 1;
1.1 misho 1402: rpc_srv_t *srv = NULL;
1.14 misho 1403: sockaddr_t sa = E_SOCKADDR_INIT;
1.1 misho 1404:
1.25 ! misho 1405: if (!concurentClients || (proto < 0 || proto > SOCK_RAW)) {
1.10 misho 1406: rpc_SetErr(EINVAL, "Invalid parameters can`t init RPC server");
1.1 misho 1407: return NULL;
1408: }
1.14 misho 1409: if (!e_gethostbyname(csHost, Port, &sa))
1.10 misho 1410: return NULL;
1.1 misho 1411: if (!Port)
1412: Port = RPC_DEFPORT;
1.13 misho 1413: if (!proto)
1414: proto = SOCK_STREAM;
1.10 misho 1415: if (netBuf < RPC_MIN_BUFSIZ)
1.5 misho 1416: netBuf = BUFSIZ;
1.7 misho 1417: else
1.14 misho 1418: netBuf = E_ALIGN(netBuf, 2); /* align netBuf length */
1.10 misho 1419:
1420: #ifdef HAVE_SRANDOMDEV
1421: srandomdev();
1422: #else
1423: time_t tim;
1424:
1425: srandom((time(&tim) ^ getpid()));
1426: #endif
1.1 misho 1427:
1.14 misho 1428: srv = e_malloc(sizeof(rpc_srv_t));
1.1 misho 1429: if (!srv) {
1430: LOGERR;
1431: return NULL;
1432: } else
1433: memset(srv, 0, sizeof(rpc_srv_t));
1434:
1.13 misho 1435: srv->srv_proto = proto;
1.5 misho 1436: srv->srv_netbuf = netBuf;
1.1 misho 1437: srv->srv_session.sess_version = RPC_VERSION;
1.15 misho 1438: srv->srv_session.sess_instance = InstID;
1.1 misho 1439:
1440: srv->srv_server.cli_parent = srv;
1.10 misho 1441: memcpy(&srv->srv_server.cli_sa, &sa, sizeof srv->srv_server.cli_sa);
1442:
1.12 misho 1443: /* init functions */
1444: pthread_mutex_init(&srv->srv_funcs.mtx, NULL);
1445: SLIST_INIT(&srv->srv_funcs);
1446: AVL_INIT(&srv->srv_funcs);
1.10 misho 1447:
1448: /* init scheduler */
1449: srv->srv_root = schedBegin();
1450: if (!srv->srv_root) {
1451: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1.12 misho 1452: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1.14 misho 1453: e_free(srv);
1.10 misho 1454: return NULL;
1455: }
1456:
1457: /* init pool for clients */
1.14 misho 1458: srv->srv_clients = array_Init(concurentClients);
1.10 misho 1459: if (!srv->srv_clients) {
1.14 misho 1460: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1.10 misho 1461: schedEnd(&srv->srv_root);
1.12 misho 1462: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1.14 misho 1463: e_free(srv);
1.10 misho 1464: return NULL;
1465: }
1.4 misho 1466:
1467: /* create server socket */
1.13 misho 1468: srv->srv_server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, srv->srv_proto, 0);
1.1 misho 1469: if (srv->srv_server.cli_sock == -1) {
1470: LOGERR;
1.14 misho 1471: array_Destroy(&srv->srv_clients);
1.10 misho 1472: schedEnd(&srv->srv_root);
1.12 misho 1473: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1.14 misho 1474: e_free(srv);
1.1 misho 1475: return NULL;
1476: }
1477: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
1478: LOGERR;
1.10 misho 1479: goto err;
1.1 misho 1480: }
1.5 misho 1481: n = srv->srv_netbuf;
1482: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
1483: LOGERR;
1.10 misho 1484: goto err;
1.5 misho 1485: }
1486: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
1487: LOGERR;
1.10 misho 1488: goto err;
1.5 misho 1489: }
1.6 misho 1490: if (bind(srv->srv_server.cli_sock, &srv->srv_server.cli_sa.sa,
1491: srv->srv_server.cli_sa.sa.sa_len) == -1) {
1.1 misho 1492: LOGERR;
1.10 misho 1493: goto err;
1.13 misho 1494: } else
1495: fcntl(srv->srv_server.cli_sock, F_SETFL,
1496: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
1.1 misho 1497:
1.10 misho 1498: rpc_register_srvPing(srv);
1.8 misho 1499:
1.1 misho 1500: return srv;
1.10 misho 1501: err: /* error condition */
1502: close(srv->srv_server.cli_sock);
1.14 misho 1503: array_Destroy(&srv->srv_clients);
1.10 misho 1504: schedEnd(&srv->srv_root);
1.12 misho 1505: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1.14 misho 1506: e_free(srv);
1.10 misho 1507: return NULL;
1.1 misho 1508: }
1509:
1510: /*
1.7 misho 1511: * rpc_srv_endServer() - Destroy RPC server, close all opened sockets and free resources
1512: *
1.6 misho 1513: * @psrv = RPC Server instance
1.1 misho 1514: * return: none
1515: */
1.16 misho 1516: void
1.6 misho 1517: rpc_srv_endServer(rpc_srv_t ** __restrict psrv)
1.1 misho 1518: {
1.10 misho 1519: if (!psrv || !*psrv)
1.1 misho 1520: return;
1521:
1.10 misho 1522: /* if send kill to blob server */
1.17 misho 1523: rpc_srv_endBLOBServer(*psrv);
1.1 misho 1524:
1.10 misho 1525: (*psrv)->srv_kill = 1;
1526: sleep(RPC_SCHED_POLLING);
1.2 misho 1527:
1.17 misho 1528: schedEnd(&(*psrv)->srv_root);
1529:
1.12 misho 1530: pthread_mutex_destroy(&(*psrv)->srv_funcs.mtx);
1.14 misho 1531: e_free(*psrv);
1.6 misho 1532: *psrv = NULL;
1.1 misho 1533: }
1534:
1535: /*
1.7 misho 1536: * rpc_srv_loopServer() - Execute Main server loop and wait for clients requests
1537: *
1.1 misho 1538: * @srv = RPC Server instance
1539: * return: -1 error or 0 ok, infinite loop ...
1540: */
1541: int
1.5 misho 1542: rpc_srv_loopServer(rpc_srv_t * __restrict srv)
1.1 misho 1543: {
1.10 misho 1544: rpc_cli_t *c;
1.1 misho 1545: register int i;
1.12 misho 1546: rpc_func_t *f;
1.10 misho 1547: struct timespec ts = { RPC_SCHED_POLLING, 0 };
1.1 misho 1548:
1549: if (!srv) {
1.10 misho 1550: rpc_SetErr(EINVAL, "Invalid parameter can`t start RPC server");
1.1 misho 1551: return -1;
1552: }
1553:
1.13 misho 1554: if (srv->srv_proto == SOCK_STREAM)
1.14 misho 1555: if (listen(srv->srv_server.cli_sock, array_Size(srv->srv_clients)) == -1) {
1.13 misho 1556: LOGERR;
1557: return -1;
1558: }
1.1 misho 1559:
1.13 misho 1560: if (!schedRead(srv->srv_root, cbProto[srv->srv_proto][CB_ACCEPTCLIENT], srv,
1561: srv->srv_server.cli_sock, NULL, 0)) {
1.10 misho 1562: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1563: return -1;
1564: }
1.7 misho 1565:
1.10 misho 1566: schedPolling(srv->srv_root, &ts, NULL);
1.7 misho 1567: /* main rpc loop */
1.10 misho 1568: schedRun(srv->srv_root, &srv->srv_kill);
1569:
1570: /* close all clients connections & server socket */
1.14 misho 1571: for (i = 0; i < array_Size(srv->srv_clients); i++) {
1572: c = array(srv->srv_clients, i, rpc_cli_t*);
1.10 misho 1573: if (c) {
1.24 misho 1574: if (srv->srv_proto == SOCK_STREAM) {
1575: shutdown(c->cli_sock, SHUT_RDWR);
1576: close(c->cli_sock);
1577: }
1.10 misho 1578:
1579: schedCancelby(srv->srv_root, taskMAX, CRITERIA_ARG, c, NULL);
1.14 misho 1580: ait_freeVars(&RPC_RETVARS(c));
1.10 misho 1581: AIT_FREE_VAL(&c->cli_buf);
1.1 misho 1582: }
1.14 misho 1583: array_Del(srv->srv_clients, i, 42);
1.10 misho 1584: }
1.14 misho 1585: array_Destroy(&srv->srv_clients);
1.2 misho 1586:
1.25 ! misho 1587: if (srv->srv_proto != SOCK_EXT)
! 1588: close(srv->srv_server.cli_sock);
1.2 misho 1589:
1.10 misho 1590: /* detach exported calls */
1.12 misho 1591: RPC_FUNCS_LOCK(&srv->srv_funcs);
1592: while ((f = SLIST_FIRST(&srv->srv_funcs))) {
1593: SLIST_REMOVE_HEAD(&srv->srv_funcs, func_next);
1.1 misho 1594:
1.10 misho 1595: AIT_FREE_VAL(&f->func_name);
1.14 misho 1596: e_free(f);
1.1 misho 1597: }
1.12 misho 1598: srv->srv_funcs.avlh_root = NULL;
1599: RPC_FUNCS_UNLOCK(&srv->srv_funcs);
1.1 misho 1600:
1601: return 0;
1602: }
1603:
1604:
1605: /*
1606: * rpc_srv_execCall() Execute registered call from RPC server
1.7 misho 1607: *
1.10 misho 1608: * @cli = RPC client
1.1 misho 1609: * @rpc = IN RPC call structure
1.10 misho 1610: * @funcname = Execute RPC function
1.5 misho 1611: * @args = IN RPC calling arguments from RPC client
1.1 misho 1612: * return: -1 error, !=-1 ok
1613: */
1614: int
1.10 misho 1615: rpc_srv_execCall(rpc_cli_t * __restrict cli, struct tagRPCCall * __restrict rpc,
1616: ait_val_t funcname, array_t * __restrict args)
1.1 misho 1617: {
1618: rpc_callback_t func;
1619:
1.10 misho 1620: if (!cli || !rpc || !AIT_ADDR(&funcname)) {
1.7 misho 1621: rpc_SetErr(EINVAL, "Invalid parameter can`t exec function");
1.1 misho 1622: return -1;
1623: }
1624:
1.10 misho 1625: func = AIT_GET_LIKE(&funcname, rpc_callback_t);
1626: return func(cli, rpc, args);
1.1 misho 1627: }
1.24 misho 1628:
1629:
1630: /*
1631: * rpc_srv_initServer2() - Init & create layer2 RPC Server
1632: *
1633: * @InstID = Instance for authentication & recognition
1634: * @concurentClients = Concurent clients at same time to this server
1635: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
1636: * @csIface = Interface name for bind server, if NULL first interface on host
1637: * return: NULL == error or !=NULL bind and created RPC server instance
1638: */
1639: rpc_srv_t *
1640: rpc_srv_initServer2(u_char InstID, int concurentClients, int netBuf, const char *csIface)
1641: {
1642: int n = 1;
1643: rpc_srv_t *srv = NULL;
1644: sockaddr_t sa = E_SOCKADDR_INIT;
1645: char szIface[64], szStr[STRSIZ];
1646: register int i;
1647: struct ifreq ifr;
1648: struct bpf_insn insns[] = {
1649: BPF_STMT(BPF_LD + BPF_H + BPF_ABS, 12),
1650: BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, RPC_DEFPORT, 0, 1),
1651: BPF_STMT(BPF_RET + BPF_K, -1),
1652: BPF_STMT(BPF_RET + BPF_K, 0),
1653: };
1654: struct bpf_program fcode = {
1655: .bf_len = sizeof(insns) / sizeof(struct bpf_insn),
1656: .bf_insns = insns
1657: };
1658:
1659: if (!concurentClients) {
1660: rpc_SetErr(EINVAL, "Invalid parameters can`t init RPC server");
1661: return NULL;
1662: }
1663: if (!csIface) {
1664: if (e_get1stiface(szIface, sizeof szIface))
1665: return NULL;
1666: } else
1667: strlcpy(szIface, csIface, sizeof szIface);
1668: if (!e_getifacebyname(szIface, &sa))
1669: return NULL;
1670:
1671: #ifdef HAVE_SRANDOMDEV
1672: srandomdev();
1673: #else
1674: time_t tim;
1675:
1676: srandom((time(&tim) ^ getpid()));
1677: #endif
1678:
1679: srv = e_malloc(sizeof(rpc_srv_t));
1680: if (!srv) {
1681: LOGERR;
1682: return NULL;
1683: } else
1684: memset(srv, 0, sizeof(rpc_srv_t));
1685:
1686: srv->srv_proto = SOCK_BPF;
1687: srv->srv_netbuf = netBuf;
1688: srv->srv_session.sess_version = RPC_VERSION;
1689: srv->srv_session.sess_instance = InstID;
1690:
1691: srv->srv_server.cli_parent = srv;
1692: memcpy(&srv->srv_server.cli_sa, &sa, sizeof srv->srv_server.cli_sa);
1693:
1694: /* init functions */
1695: pthread_mutex_init(&srv->srv_funcs.mtx, NULL);
1696: SLIST_INIT(&srv->srv_funcs);
1697: AVL_INIT(&srv->srv_funcs);
1698:
1699: /* init scheduler */
1700: srv->srv_root = schedBegin();
1701: if (!srv->srv_root) {
1702: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1703: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1704: e_free(srv);
1705: return NULL;
1706: }
1707:
1708: /* init pool for clients */
1709: srv->srv_clients = array_Init(concurentClients);
1710: if (!srv->srv_clients) {
1711: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1712: schedEnd(&srv->srv_root);
1713: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1714: e_free(srv);
1715: return NULL;
1716: }
1717:
1718: /* create server handler */
1719: for (i = 0; i < 10; i++) {
1720: memset(szStr, 0, sizeof szStr);
1721: snprintf(szStr, sizeof szStr, "/dev/bpf%d", i);
1722: srv->srv_server.cli_sock = open(szStr, O_RDWR);
1723: if (srv->srv_server.cli_sock > STDERR_FILENO)
1724: break;
1725: }
1726: if (srv->srv_server.cli_sock < 3) {
1727: LOGERR;
1728: array_Destroy(&srv->srv_clients);
1729: schedEnd(&srv->srv_root);
1730: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1731: e_free(srv);
1732: return NULL;
1733: }
1734:
1735: if (ioctl(srv->srv_server.cli_sock, BIOCIMMEDIATE, &n) == -1) {
1736: LOGERR;
1737: goto err;
1738: }
1739: if (ioctl(srv->srv_server.cli_sock, BIOCSETF, &fcode) == -1) {
1740: LOGERR;
1741: goto err;
1742: }
1743: n = (netBuf < RPC_MIN_BUFSIZ) ? getpagesize() : E_ALIGN(netBuf, 2);
1744: if (ioctl(srv->srv_server.cli_sock, BIOCSBLEN, &n) == -1) {
1745: LOGERR;
1746: goto err;
1747: } else
1748: srv->srv_netbuf = n;
1749:
1750: memset(&ifr, 0, sizeof ifr);
1751: strlcpy(ifr.ifr_name, szIface, sizeof ifr.ifr_name);
1752: if (ioctl(srv->srv_server.cli_sock, BIOCSETIF, &ifr) == -1) {
1753: LOGERR;
1754: goto err;
1755: } else
1756: fcntl(srv->srv_server.cli_sock, F_SETFL,
1757: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
1758:
1759: rpc_register_srvPing(srv);
1760:
1761: return srv;
1762: err: /* error condition */
1763: close(srv->srv_server.cli_sock);
1764: array_Destroy(&srv->srv_clients);
1765: schedEnd(&srv->srv_root);
1766: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1767: e_free(srv);
1768: return NULL;
1769: }
1.25 ! misho 1770:
! 1771: /*
! 1772: * rpc_srv_initServerExt() - Init & create pipe RPC Server
! 1773: *
! 1774: * @InstID = Instance for authentication & recognition
! 1775: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
! 1776: * @fd = File descriptor
! 1777: * return: NULL == error or !=NULL bind and created RPC server instance
! 1778: */
! 1779: rpc_srv_t *
! 1780: rpc_srv_initServerExt(u_char InstID, int netBuf, int fd)
! 1781: {
! 1782: rpc_srv_t *srv = NULL;
! 1783:
! 1784: #ifdef HAVE_SRANDOMDEV
! 1785: srandomdev();
! 1786: #else
! 1787: time_t tim;
! 1788:
! 1789: srandom((time(&tim) ^ getpid()));
! 1790: #endif
! 1791:
! 1792: srv = e_malloc(sizeof(rpc_srv_t));
! 1793: if (!srv) {
! 1794: LOGERR;
! 1795: return NULL;
! 1796: } else
! 1797: memset(srv, 0, sizeof(rpc_srv_t));
! 1798:
! 1799: srv->srv_proto = SOCK_EXT;
! 1800: srv->srv_netbuf = (netBuf < RPC_MIN_BUFSIZ) ?
! 1801: getpagesize() : E_ALIGN(netBuf, 2);
! 1802: srv->srv_session.sess_version = RPC_VERSION;
! 1803: srv->srv_session.sess_instance = InstID;
! 1804:
! 1805: srv->srv_server.cli_parent = srv;
! 1806: srv->srv_server.cli_sock = fd;
! 1807:
! 1808: /* init functions */
! 1809: pthread_mutex_init(&srv->srv_funcs.mtx, NULL);
! 1810: SLIST_INIT(&srv->srv_funcs);
! 1811: AVL_INIT(&srv->srv_funcs);
! 1812:
! 1813: /* init scheduler */
! 1814: srv->srv_root = schedBegin();
! 1815: if (!srv->srv_root) {
! 1816: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
! 1817: pthread_mutex_destroy(&srv->srv_funcs.mtx);
! 1818: e_free(srv);
! 1819: return NULL;
! 1820: }
! 1821:
! 1822: /* init pool for clients */
! 1823: srv->srv_clients = array_Init(1);
! 1824: if (!srv->srv_clients) {
! 1825: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
! 1826: schedEnd(&srv->srv_root);
! 1827: pthread_mutex_destroy(&srv->srv_funcs.mtx);
! 1828: e_free(srv);
! 1829: return NULL;
! 1830: }
! 1831:
! 1832: fcntl(srv->srv_server.cli_sock, F_SETFL,
! 1833: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
! 1834:
! 1835: rpc_register_srvPing(srv);
! 1836:
! 1837: return srv;
! 1838: }
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