Annotation of libaitrpc/src/srv.c, revision 1.28.2.2
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 $
1.28.2.2! misho 6: * $Id: srv.c,v 1.28.2.1 2016/06/23 15:59:52 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:
1.28.2.2! misho 15: Copyright 2004 - 2016
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 */
1.26 misho 61: static void *rxRAWPacket(sched_task_t *);
62: static void *txRAWPacket(sched_task_t *);
1.13 misho 63:
1.24 misho 64: /* SOCK_BPF */
65: static void *rxBPFPacket(sched_task_t *);
66: static void *txBPFPacket(sched_task_t *);
67:
1.25 misho 68: /* SOCK_EXT */
69: static void *rxEXTPacket(sched_task_t *);
70: static void *txEXTPacket(sched_task_t *);
71:
72: static sched_task_func_t cbProto[SOCK_MAX_SUPPORT][4] = {
1.27 misho 73: { acceptClients, closeClient, rxPacket, txPacket }, /* SOCK_STREAM */
74: { acceptClients, closeClient, rxPacket, txPacket }, /* SOCK_STREAM */
75: { rxUDPPacket, freeClient, NULL /*rxUDPPacket*/, txUDPPacket }, /* SOCK_DGRAM */
76: { rxRAWPacket, freeClient, NULL /*rxRAWPacket*/, txRAWPacket }, /* SOCK_RAW */
77: { rxBPFPacket, freeClient, NULL /*rxBPFPacket*/, txBPFPacket }, /* SOCK_BPF */
78: { rxEXTPacket, freeClient, NULL /*rxEXTPacket*/, txEXTPacket } /* SOCK_EXT */
1.13 misho 79: };
80:
1.23 misho 81: /* Global Signal Argument when kqueue support disabled */
82:
83: static volatile uintptr_t _glSigArg = 0;
84:
1.16 misho 85: void
1.13 misho 86: rpc_freeCli(rpc_cli_t * __restrict c)
1.10 misho 87: {
88: rpc_srv_t *s = c->cli_parent;
89:
1.13 misho 90: schedCancelby(s->srv_root, taskMAX, CRITERIA_ARG, c, NULL);
1.10 misho 91:
92: /* free buffer */
93: AIT_FREE_VAL(&c->cli_buf);
94:
1.14 misho 95: array_Del(s->srv_clients, c->cli_id, 0);
1.10 misho 96: if (c)
1.14 misho 97: e_free(c);
1.13 misho 98: }
99:
100:
101: static inline int
1.14 misho 102: _check4freeslot(rpc_srv_t * __restrict srv, sockaddr_t * __restrict sa)
1.13 misho 103: {
104: rpc_cli_t *c = NULL;
105: register int i;
106:
107: /* check free slots for connect */
1.14 misho 108: for (i = 0; i < array_Size(srv->srv_clients) &&
109: (c = array(srv->srv_clients, i, rpc_cli_t*)); i++)
1.13 misho 110: /* check for duplicates */
1.14 misho 111: if (sa && !e_addrcmp(&c->cli_sa, sa, 42))
1.13 misho 112: break;
1.14 misho 113: if (i >= array_Size(srv->srv_clients))
1.13 misho 114: return -1; /* no more free slots! */
115:
116: return i;
117: }
118:
119: static rpc_cli_t *
1.14 misho 120: _allocClient(rpc_srv_t * __restrict srv, sockaddr_t * __restrict sa)
1.13 misho 121: {
122: rpc_cli_t *c = NULL;
123: int n;
124:
1.25 misho 125: if (srv->srv_proto != SOCK_EXT)
126: n = _check4freeslot(srv, sa);
127: else
128: n = 0;
1.13 misho 129: if (n == -1)
130: return NULL;
131: else
1.14 misho 132: c = array(srv->srv_clients, n, rpc_cli_t*);
1.13 misho 133:
134: if (!c) {
1.14 misho 135: c = e_malloc(sizeof(rpc_cli_t));
1.13 misho 136: if (!c) {
137: LOGERR;
138: srv->srv_kill = 1;
139: return NULL;
140: } else {
141: memset(c, 0, sizeof(rpc_cli_t));
1.14 misho 142: array_Set(srv->srv_clients, n, c);
1.13 misho 143: c->cli_id = n;
144: c->cli_parent = srv;
145: }
146:
147: /* alloc empty buffer */
1.14 misho 148: AIT_SET_BUFSIZ(&c->cli_buf, 0, srv->srv_netbuf);
1.13 misho 149: }
150:
151: return c;
152: }
153:
154:
155: static void *
156: freeClient(sched_task_t *task)
157: {
158: rpc_freeCli(TASK_ARG(task));
159:
1.27 misho 160: taskExit(task, NULL);
1.13 misho 161: }
162:
163: static void *
164: closeClient(sched_task_t *task)
165: {
166: int sock = ((rpc_cli_t*) TASK_ARG(task))->cli_sock;
167:
168: rpc_freeCli(TASK_ARG(task));
169:
170: /* close client socket */
171: shutdown(sock, SHUT_RDWR);
172: close(sock);
1.27 misho 173: taskExit(task, NULL);
1.10 misho 174: }
1.7 misho 175:
176: static void *
177: txPacket(sched_task_t *task)
178: {
179: rpc_cli_t *c = TASK_ARG(task);
180: rpc_srv_t *s = c->cli_parent;
181: rpc_func_t *f = NULL;
1.18 misho 182: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1.7 misho 183: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
1.27 misho 184: int ret, wlen = sizeof(struct tagRPCCall);
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;
1.27 misho 199: RPC_SET_RETURN(rpc, -1);
200: RPC_SET_ERRNO(rpc, rpc_Errno);
201: } else if (rpc_pktFreeSpace(c) > s->srv_netbuf) {
202: rpc_SetErr(EMSGSIZE, "Message too long");
203:
204: rpc->call_argc ^= rpc->call_argc;
205: RPC_SET_RETURN(rpc, -1);
206: RPC_SET_ERRNO(rpc, rpc_Errno);
1.7 misho 207: } else {
1.25 misho 208: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
1.7 misho 209: /* Go Encapsulate variables */
1.18 misho 210: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
211: RPC_RETVARS(c));
1.7 misho 212: if (ret == -1) {
213: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
1.19 misho 214:
1.7 misho 215: rpc->call_argc ^= rpc->call_argc;
1.27 misho 216: RPC_SET_RETURN(rpc, -1);
217: RPC_SET_ERRNO(rpc, rpc_Errno);
1.7 misho 218: } else
219: wlen += ret;
220: }
221: }
222:
1.27 misho 223: /* Free return values */
224: ait_freeVars(&c->cli_vars);
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 */
1.27 misho 236: ret = send(TASK_FD(task), buf, wlen, MSG_NOSIGNAL);
237: if (ret == -1) {
238: /* close connection */
239: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
240: TASK_ARG(task), 0, NULL, 0);
1.10 misho 241: }
1.7 misho 242:
1.27 misho 243: taskExit(task, NULL);
1.7 misho 244: }
245:
246: static void *
247: execCall(sched_task_t *task)
248: {
249: rpc_cli_t *c = TASK_ARG(task);
250: rpc_srv_t *s = c->cli_parent;
251: rpc_func_t *f = NULL;
252: array_t *arr = NULL;
1.18 misho 253: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1.7 misho 254: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
1.25 misho 255: int argc = rpc->call_argc;
1.7 misho 256:
257: /* Go decapsulate variables ... */
1.8 misho 258: if (argc) {
1.14 misho 259: arr = ait_buffer2vars(buf + sizeof(struct tagRPCCall),
1.18 misho 260: AIT_LEN(&c->cli_buf) - sizeof(struct tagRPCCall), argc, 42);
1.7 misho 261: if (!arr) {
1.14 misho 262: rpc_SetErr(ERPCMISMATCH, "#%d - %s", elwix_GetErrno(), elwix_GetError());
1.18 misho 263:
1.7 misho 264: rpc->call_argc ^= rpc->call_argc;
1.27 misho 265: RPC_SET_RETURN(rpc, -1);
266: RPC_SET_ERRNO(rpc, rpc_Errno);
267: taskExit(task, NULL);
1.7 misho 268: }
1.10 misho 269: } else
270: arr = NULL;
1.7 misho 271:
1.10 misho 272: if (!(f = rpc_srv_getCall(s, ntohs(rpc->call_tag)))) {
1.7 misho 273: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
1.18 misho 274:
1.7 misho 275: rpc->call_argc ^= rpc->call_argc;
1.27 misho 276: RPC_SET_RETURN(rpc, -1);
277: RPC_SET_ERRNO(rpc, rpc_Errno);
1.7 misho 278: } else {
1.8 misho 279: /* if client doesn't want reply */
1.27 misho 280: RPC_SET_RETURN(rpc, rpc_srv_execCall(c, rpc, f->func_name, arr));
1.7 misho 281: if (rpc->call_rep.ret == htonl(-1)) {
1.20 misho 282: if (!rpc->call_rep.eno) {
283: LOGERR;
1.27 misho 284: RPC_SET_ERRNO(rpc, rpc_Errno);
1.20 misho 285: }
1.7 misho 286: rpc->call_argc ^= rpc->call_argc;
1.27 misho 287: ait_freeVars(&c->cli_vars);
1.7 misho 288: } else {
289: rpc->call_rep.eno ^= rpc->call_rep.eno;
1.27 misho 290: rpc->call_argc ^= rpc->call_argc;
291: if (TASK_VAL(task)) {
1.8 misho 292: /* without reply */
1.14 misho 293: ait_freeVars(&c->cli_vars);
1.10 misho 294: } else {
295: /* reply */
1.25 misho 296: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
1.10 misho 297: }
1.7 misho 298: }
299: }
300:
1.14 misho 301: array_Destroy(&arr);
1.27 misho 302: taskExit(task, NULL);
1.7 misho 303: }
304:
305: static void *
306: rxPacket(sched_task_t *task)
307: {
308: rpc_cli_t *c = TASK_ARG(task);
309: rpc_srv_t *s = c->cli_parent;
1.27 misho 310: int len, noreply = 0, rlen = AIT_LEN(&c->cli_buf);
1.15 misho 311: #if 0
312: u_short crc;
313: #endif
1.10 misho 314: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1.28.2.1 misho 315: struct tagRPCCall b, *rpc = (struct tagRPCCall*) buf;
1.21 misho 316: #ifdef TCP_SESSION_TIMEOUT
317: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
318:
319: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
320: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
321: TASK_ARG(task), ts, TASK_ARG(task), 0);
322: #endif
1.7 misho 323:
1.27 misho 324: /* prepare rx */
1.28.2.1 misho 325: len = recv(TASK_FD(task), &b, sizeof b, MSG_PEEK);
1.27 misho 326: if (len == sizeof b)
1.28.2.1 misho 327: rlen = ntohl(b.call_len);
1.27 misho 328:
329: rlen = recv(TASK_FD(task), buf, rlen, 0);
330: if (rlen == -1) {
1.10 misho 331: /* close connection */
1.13 misho 332: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
333: TASK_ARG(task), 0, NULL, 0);
1.27 misho 334: taskExit(task, NULL);
1.18 misho 335: }
1.27 misho 336: if (rlen < sizeof(struct tagRPCCall)) {
337: rpc_SetErr(ERPCMISMATCH, "Short RPC packet");
1.18 misho 338:
1.27 misho 339: rpc->call_argc ^= rpc->call_argc;
340: RPC_SET_RETURN(rpc, -1);
341: RPC_SET_ERRNO(rpc, rpc_Errno);
342: goto err;
343: } else
344: len = ntohl(rpc->call_len);
345: if (rlen < len || len > AIT_LEN(&c->cli_buf)) {
346: rpc_SetErr(ERPCMISMATCH, "Short RPC packet");
347:
348: rpc->call_argc ^= rpc->call_argc;
349: RPC_SET_RETURN(rpc, -1);
350: RPC_SET_ERRNO(rpc, rpc_Errno);
351: goto err;
1.18 misho 352: }
1.8 misho 353:
1.25 misho 354: /* skip loop packet */
355: if (rpc->call_io & RPC_ACK) {
356: schedReadSelf(task);
1.27 misho 357: taskExit(task, NULL);
1.25 misho 358: }
359:
1.15 misho 360: #if 0
1.18 misho 361: /* check integrity of packet */
362: crc = ntohs(rpc->call_crc);
363: rpc->call_crc ^= rpc->call_crc;
364: if (crc != crcFletcher16((u_short*) rpc, len / 2)) {
365: rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet");
1.27 misho 366:
367: rpc->call_argc ^= rpc->call_argc;
368: RPC_SET_RETURN(rpc, -1);
369: RPC_SET_ERRNO(rpc, rpc_Errno);
370: goto err;
1.18 misho 371: }
1.15 misho 372: #endif
1.7 misho 373:
1.18 misho 374: /* check RPC packet session info */
375: if (rpc_chkPktSession(&rpc->call_session, &s->srv_session)) {
376: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
1.7 misho 377:
1.18 misho 378: rpc->call_argc ^= rpc->call_argc;
1.27 misho 379: RPC_SET_RETURN(rpc, -1);
380: RPC_SET_ERRNO(rpc, rpc_Errno);
381: goto err;
1.18 misho 382: }
1.7 misho 383:
1.27 misho 384: noreply = RPC_CHK_NOREPLY(rpc);
385:
386: /* execute RPC call */
387: schedEvent(TASK_ROOT(task), execCall, TASK_ARG(task), (int) noreply, rpc, len);
388: err:
1.18 misho 389: /* send RPC reply */
390: if (!noreply)
391: schedWrite(TASK_ROOT(task), cbProto[s->srv_proto][CB_TXPACKET],
392: TASK_ARG(task), TASK_FD(task), rpc, len);
1.7 misho 393:
394: /* lets get next packet */
1.18 misho 395: schedReadSelf(task);
1.27 misho 396: taskExit(task, NULL);
1.7 misho 397: }
398:
1.1 misho 399: static void *
1.10 misho 400: acceptClients(sched_task_t *task)
1.1 misho 401: {
1.10 misho 402: rpc_srv_t *srv = TASK_ARG(task);
403: rpc_cli_t *c = NULL;
1.14 misho 404: socklen_t salen = sizeof(sockaddr_t);
1.21 misho 405: int sock;
406: #ifdef TCP_SESSION_TIMEOUT
407: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
408: #endif
1.7 misho 409:
1.13 misho 410: c = _allocClient(srv, NULL);
1.21 misho 411: if (!c) {
412: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
413: if ((sock = accept(TASK_FD(task), NULL, NULL)) != -1) {
414: shutdown(sock, SHUT_RDWR);
415: close(sock);
416: }
1.10 misho 417: goto end;
1.21 misho 418: }
1.10 misho 419:
420: /* accept client */
421: c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen);
422: if (c->cli_sock == -1) {
423: LOGERR;
424: AIT_FREE_VAL(&c->cli_buf);
1.14 misho 425: array_Del(srv->srv_clients, c->cli_id, 42);
1.10 misho 426: goto end;
1.1 misho 427: } else
1.10 misho 428: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
1.1 misho 429:
1.21 misho 430: #ifdef TCP_SESSION_TIMEOUT
431: /* armed timer for close stateless connection */
432: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
433: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT], c,
434: ts, c, 0);
435: #endif
1.13 misho 436: schedRead(TASK_ROOT(task), cbProto[srv->srv_proto][CB_RXPACKET], c,
437: c->cli_sock, NULL, 0);
1.10 misho 438: end:
439: schedReadSelf(task);
1.27 misho 440: taskExit(task, NULL);
1.10 misho 441: }
1.5 misho 442:
1.7 misho 443:
1.10 misho 444: static void *
1.13 misho 445: txUDPPacket(sched_task_t *task)
1.10 misho 446: {
447: rpc_cli_t *c = TASK_ARG(task);
448: rpc_srv_t *s = c->cli_parent;
1.13 misho 449: rpc_func_t *f = NULL;
1.18 misho 450: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1.13 misho 451: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
1.27 misho 452: int ret, wlen = sizeof(struct tagRPCCall);
1.13 misho 453: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
454:
455: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
456: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
457: TASK_ARG(task), ts, TASK_ARG(task), 0);
458:
459: if (rpc->call_argc) {
460: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
461: if (!f) {
462: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
1.27 misho 463:
1.13 misho 464: rpc->call_argc ^= rpc->call_argc;
1.27 misho 465: RPC_SET_RETURN(rpc, -1);
466: RPC_SET_ERRNO(rpc, rpc_Errno);
467: } else if (rpc_pktFreeSpace(c) > s->srv_netbuf) {
468: rpc_SetErr(EMSGSIZE, "Message too long");
469:
470: rpc->call_argc ^= rpc->call_argc;
471: RPC_SET_RETURN(rpc, -1);
472: RPC_SET_ERRNO(rpc, rpc_Errno);
1.13 misho 473: } else {
1.25 misho 474: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
1.13 misho 475: /* Go Encapsulate variables */
1.18 misho 476: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
477: RPC_RETVARS(c));
1.13 misho 478: if (ret == -1) {
479: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
1.27 misho 480:
1.13 misho 481: rpc->call_argc ^= rpc->call_argc;
1.27 misho 482: RPC_SET_RETURN(rpc, -1);
483: RPC_SET_ERRNO(rpc, rpc_Errno);
1.13 misho 484: } else
485: wlen += ret;
486: }
487: }
1.7 misho 488:
1.27 misho 489: /* Free return values */
490: ait_freeVars(&c->cli_vars);
491:
1.18 misho 492: rpc->call_len = htonl(wlen);
1.25 misho 493: rpc->call_io = RPC_ACK;
1.7 misho 494:
1.13 misho 495: /* calculate CRC */
496: rpc->call_crc ^= rpc->call_crc;
497: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
498:
499: /* send reply */
1.27 misho 500: ret = sendto(TASK_FD(task), buf, wlen, MSG_NOSIGNAL,
1.28.2.2! misho 501: &c->cli_sa.sa, sizeof c->cli_sa.sa);
1.27 misho 502: if (ret == -1) {
503: /* close connection */
504: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
505: TASK_ARG(task), 0, NULL, 0);
1.13 misho 506: }
507:
1.27 misho 508: taskExit(task, NULL);
1.13 misho 509: }
510:
511: static void *
512: rxUDPPacket(sched_task_t *task)
513: {
514: rpc_srv_t *srv = TASK_ARG(task);
515: rpc_cli_t *c = NULL;
1.27 misho 516: int len, noreply = 0, rlen;
1.22 misho 517: u_short crc;
1.27 misho 518: struct tagRPCCall *rpc;
1.14 misho 519: sockaddr_t sa;
1.28.2.2! misho 520: socklen_t salen = (u_char) MIN(sizeof(sockaddr_t), 0xff);
1.13 misho 521: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
1.27 misho 522: ait_val_t b = AIT_VAL_INIT;
1.13 misho 523:
524: /* receive connect packet */
1.27 misho 525: AIT_SET_BUF(&b, NULL, srv->srv_netbuf);
1.28.2.2! misho 526: #ifndef __linux__
! 527: sa.ss.ss_len = salen;
! 528: #endif
1.27 misho 529: rlen = recvfrom(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b), 0, &sa.sa, &salen);
530: rpc = (struct tagRPCCall*) AIT_GET_BUF(&b);
531: if (rlen < sizeof(struct tagRPCCall))
532: goto end;
533: else
534: len = ntohl(rpc->call_len);
535: if (rlen < len || len > srv->srv_netbuf)
536: goto end;
537:
538: /* skip loop packet */
539: if (rpc->call_io & RPC_ACK)
540: goto end;
541:
542: /* check integrity of packet */
543: crc = ntohs(rpc->call_crc);
544: rpc->call_crc ^= rpc->call_crc;
545: if (crc != crcFletcher16((u_short*) rpc, len / 2))
546: goto end;
547:
548: /* check RPC packet session info */
549: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session))
1.13 misho 550: goto end;
551:
552: c = _allocClient(srv, &sa);
1.22 misho 553: if (!c) {
554: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
555: usleep(2000); /* blocked client delay */
1.13 misho 556: goto end;
1.22 misho 557: } else {
1.27 misho 558: memcpy(AIT_GET_BUF(&c->cli_buf), AIT_GET_BUF(&b), len);
1.22 misho 559: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
560:
1.13 misho 561: c->cli_sock = TASK_FD(task);
562: memcpy(&c->cli_sa, &sa, sizeof c->cli_sa);
1.22 misho 563:
1.13 misho 564: /* armed timer for close stateless connection */
565: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
566: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
567: c, ts, c, 0);
568: }
569:
1.24 misho 570: noreply = RPC_CHK_NOREPLY(rpc);
571:
1.27 misho 572: /* execute RPC call */
573: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
1.24 misho 574:
575: /* send RPC reply */
576: if (!noreply)
577: schedWrite(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
578: c, TASK_FD(task), rpc, len);
579: end:
1.27 misho 580: AIT_FREE_VAL(&b);
1.24 misho 581: schedReadSelf(task);
1.27 misho 582: taskExit(task, NULL);
1.24 misho 583: }
584:
585:
586: static void *
1.26 misho 587: txRAWPacket(sched_task_t *task)
588: {
589: rpc_cli_t *c = TASK_ARG(task);
590: rpc_srv_t *s = c->cli_parent;
591: rpc_func_t *f = NULL;
592: u_char *buf = AIT_GET_BUF(&c->cli_buf);
593: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
1.27 misho 594: int ret, wlen = sizeof(struct tagRPCCall);
1.26 misho 595: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
596:
597: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
598: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
599: TASK_ARG(task), ts, TASK_ARG(task), 0);
600:
601: if (rpc->call_argc) {
602: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
603: if (!f) {
604: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
1.27 misho 605:
1.26 misho 606: rpc->call_argc ^= rpc->call_argc;
1.27 misho 607: RPC_SET_RETURN(rpc, -1);
608: RPC_SET_ERRNO(rpc, rpc_Errno);
609: } else if (rpc_pktFreeSpace(c) > s->srv_netbuf) {
610: rpc_SetErr(EMSGSIZE, "Message too long");
611:
612: rpc->call_argc ^= rpc->call_argc;
613: RPC_SET_RETURN(rpc, -1);
614: RPC_SET_ERRNO(rpc, rpc_Errno);
1.26 misho 615: } else {
616: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
617: /* Go Encapsulate variables */
618: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
619: RPC_RETVARS(c));
620: if (ret == -1) {
621: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
1.27 misho 622:
1.26 misho 623: rpc->call_argc ^= rpc->call_argc;
1.27 misho 624: RPC_SET_RETURN(rpc, -1);
625: RPC_SET_ERRNO(rpc, rpc_Errno);
1.26 misho 626: } else
627: wlen += ret;
628: }
629: }
630:
1.27 misho 631: /* Free return values */
632: ait_freeVars(&c->cli_vars);
633:
1.26 misho 634: rpc->call_len = htonl(wlen);
635: rpc->call_io = RPC_ACK;
636:
637: /* calculate CRC */
638: rpc->call_crc ^= rpc->call_crc;
639: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
640:
641: /* send reply */
1.27 misho 642: ret = sendto(TASK_FD(task), buf, wlen, MSG_NOSIGNAL,
1.28.2.2! misho 643: &c->cli_sa.sa, sizeof c->cli_sa.sa);
1.27 misho 644: if (ret == -1) {
645: /* close connection */
646: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
647: TASK_ARG(task), 0, NULL, 0);
1.26 misho 648: }
649:
1.27 misho 650: taskExit(task, NULL);
1.26 misho 651: }
652:
653: static void *
654: rxRAWPacket(sched_task_t *task)
655: {
656: rpc_srv_t *srv = TASK_ARG(task);
657: rpc_cli_t *c = NULL;
1.27 misho 658: int len, noreply = 0, rlen;
1.26 misho 659: u_short crc;
660: struct tagRPCCall *rpc;
661: sockaddr_t sa;
1.28.2.2! misho 662: socklen_t salen = (u_char) MIN(sizeof(sockaddr_t), 0xff);
1.26 misho 663: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
1.27 misho 664: ait_val_t b = AIT_VAL_INIT;
1.26 misho 665:
666: /* receive connect packet */
1.27 misho 667: AIT_SET_BUF(&b, NULL, srv->srv_netbuf);
1.28.2.2! misho 668: #ifndef __linux__
! 669: sa.ss.ss_len = salen;
! 670: #endif
1.27 misho 671: rlen = recvfrom(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b), 0, &sa.sa, &salen);
672: if (sa.sa.sa_family == AF_INET) {
673: struct ip *h;
674: h = (struct ip*) AIT_GET_BUF(&b);
675: if (rlen < ntohs(h->ip_len) || h->ip_p != IPPROTO_ERPC)
676: goto end;
677: else {
678: rlen -= sizeof(struct ip);
679: rpc = (struct tagRPCCall*) (h + 1);
680: }
681: } else {
682: struct ip6_hdr *h;
683: h = (struct ip6_hdr*) AIT_GET_BUF(&b);
684: if (rlen < (ntohs(h->ip6_plen) + sizeof(struct ip6_hdr)) ||
685: h->ip6_nxt != IPPROTO_ERPC)
686: goto end;
687: else {
688: rlen -= sizeof(struct ip6_hdr);
689: rpc = (struct tagRPCCall*) (h + 1);
690: }
691: }
692: if (rlen < sizeof(struct tagRPCCall))
693: goto end;
694: else
695: len = ntohl(rpc->call_len);
696: if (rlen < len || len > srv->srv_netbuf)
697: goto end;
698:
699: /* skip loop packet */
700: if (rpc->call_io & RPC_ACK)
701: goto end;
702:
703: /* check integrity of packet */
704: crc = ntohs(rpc->call_crc);
705: rpc->call_crc ^= rpc->call_crc;
706: if (crc != crcFletcher16((u_short*) rpc, len / 2))
707: goto end;
708:
709: /* check RPC packet session info */
710: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session))
1.26 misho 711: goto end;
712:
713: c = _allocClient(srv, &sa);
714: if (!c) {
715: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
716: usleep(2000); /* blocked client delay */
717: goto end;
718: } else {
1.27 misho 719: memcpy(AIT_GET_BUF(&c->cli_buf), rpc, len);
720: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
1.26 misho 721:
722: c->cli_sock = TASK_FD(task);
723: memcpy(&c->cli_sa, &sa, sizeof c->cli_sa);
724:
725: /* armed timer for close stateless connection */
726: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
727: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
728: c, ts, c, 0);
729: }
730:
731: noreply = RPC_CHK_NOREPLY(rpc);
732:
1.27 misho 733: /* execute RPC call */
734: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
1.26 misho 735:
736: /* send RPC reply */
737: if (!noreply)
738: schedWrite(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
739: c, TASK_FD(task), rpc, len);
740: end:
1.27 misho 741: AIT_FREE_VAL(&b);
1.26 misho 742: schedReadSelf(task);
1.27 misho 743: taskExit(task, NULL);
1.26 misho 744: }
745:
746:
747: static void *
1.24 misho 748: txBPFPacket(sched_task_t *task)
749: {
1.28.2.2! misho 750: #ifndef __linux__
1.24 misho 751: rpc_cli_t *c = TASK_ARG(task);
752: rpc_srv_t *s = c->cli_parent;
753: rpc_func_t *f = NULL;
754: u_char *buf = AIT_GET_BUF(&c->cli_buf);
755: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
1.27 misho 756: int ret, wlen = sizeof(struct tagRPCCall);
1.24 misho 757: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
758: struct ether_header *eh;
759: ait_val_t b = AIT_VAL_INIT;
760:
761: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
762: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
763: TASK_ARG(task), ts, TASK_ARG(task), 0);
764:
765: if (rpc->call_argc) {
766: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
767: if (!f) {
768: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
1.27 misho 769:
1.24 misho 770: rpc->call_argc ^= rpc->call_argc;
1.27 misho 771: RPC_SET_RETURN(rpc, -1);
772: RPC_SET_ERRNO(rpc, rpc_Errno);
773: } else if (rpc_pktFreeSpace(c) > s->srv_netbuf) {
774: rpc_SetErr(EMSGSIZE, "Message too long");
775:
776: rpc->call_argc ^= rpc->call_argc;
777: RPC_SET_RETURN(rpc, -1);
778: RPC_SET_ERRNO(rpc, rpc_Errno);
1.24 misho 779: } else {
1.25 misho 780: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
1.24 misho 781: /* Go Encapsulate variables */
782: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
783: RPC_RETVARS(c));
784: if (ret == -1) {
785: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
1.27 misho 786:
1.24 misho 787: rpc->call_argc ^= rpc->call_argc;
1.27 misho 788: RPC_SET_RETURN(rpc, -1);
789: RPC_SET_ERRNO(rpc, rpc_Errno);
1.24 misho 790: } else
791: wlen += ret;
792: }
793: }
794:
1.27 misho 795: /* Free return values */
796: ait_freeVars(&RPC_RETVARS(c));
797:
1.24 misho 798: rpc->call_len = htonl(wlen);
1.25 misho 799: rpc->call_io = RPC_ACK;
1.24 misho 800:
801: /* calculate CRC */
802: rpc->call_crc ^= rpc->call_crc;
803: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
804:
805: /* send reply */
1.27 misho 806: AIT_SET_BUF(&b, NULL, wlen + ETHER_HDR_LEN);
1.24 misho 807: eh = (struct ether_header*) AIT_GET_BUF(&b);
808: memcpy(eh->ether_dhost, LLADDR(&c->cli_sa.sdl), ETHER_ADDR_LEN);
809: eh->ether_type = htons(RPC_DEFPORT);
1.27 misho 810: memcpy(eh + 1, buf, wlen);
1.24 misho 811:
812: ret = write(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b));
813: AIT_FREE_VAL(&b);
814: if (ret == -1) {
815: /* close connection */
816: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
817: TASK_ARG(task), 0, NULL, 0);
1.22 misho 818: }
1.28.2.2! misho 819: #else
! 820: rpc_SetErr(ENOTSUP, "Feature isn't supported on Linux!");
! 821: #endif
1.13 misho 822:
1.27 misho 823: taskExit(task, NULL);
1.24 misho 824: }
825:
826: static void *
827: rxBPFPacket(sched_task_t *task)
828: {
1.28.2.2! misho 829: #ifndef __linux__
1.24 misho 830: rpc_srv_t *srv = TASK_ARG(task);
831: rpc_cli_t *c = NULL;
832: int len, rlen, noreply;
833: u_short crc;
834: struct tagRPCCall *rpc;
835: sockaddr_t sa;
836: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
837: struct bpf_hdr *h;
838: struct ether_header *eh;
839: ait_val_t b = AIT_VAL_INIT;
840:
841: /* receive connect packet */
842: AIT_SET_BUF(&b, NULL, srv->srv_netbuf);
843: rlen = read(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b));
844: h = (struct bpf_hdr*) AIT_GET_BUF(&b);
845: rlen -= h->bh_hdrlen;
846: if (rlen < h->bh_datalen || h->bh_caplen != h->bh_datalen ||
1.27 misho 847: rlen < ETHER_HDR_LEN + sizeof(struct tagRPCCall))
1.24 misho 848: goto end;
1.27 misho 849: else {
1.24 misho 850: rlen = h->bh_caplen;
851: eh = (struct ether_header*) (AIT_GET_BUF(&b) + h->bh_hdrlen);
852: rlen -= ETHER_HDR_LEN;
853: rpc = (struct tagRPCCall*) (eh + 1);
1.25 misho 854:
1.24 misho 855: if (eh->ether_type != ntohs(RPC_DEFPORT))
856: goto end;
857: else
858: e_getlinkbymac((const ether_addr_t*) eh->ether_shost, &sa);
859: }
1.27 misho 860: if (rlen < sizeof(struct tagRPCCall))
861: goto end;
862: else
863: len = ntohl(rpc->call_len);
864: if (rlen < len || len > srv->srv_netbuf)
865: goto end;
866:
867: #ifdef CHECK_ETHACK
868: /* skip loop packet */
869: if (rpc->call_io & RPC_ACK)
870: goto end;
871: #endif
872:
873: /* check integrity of packet */
874: crc = ntohs(rpc->call_crc);
875: rpc->call_crc ^= rpc->call_crc;
876: if (crc != crcFletcher16((u_short*) rpc, len / 2))
877: goto end;
878:
879: /* check RPC packet session info */
880: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session))
881: goto end;
1.24 misho 882:
883: c = _allocClient(srv, &sa);
884: if (!c) {
885: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
886: usleep(2000); /* blocked client delay */
887: goto end;
888: } else {
1.27 misho 889: memcpy(AIT_GET_BUF(&c->cli_buf), rpc, len);
1.24 misho 890: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
891:
892: c->cli_sock = TASK_FD(task);
893: memcpy(&c->cli_sa, &sa, sizeof c->cli_sa);
894:
895: /* armed timer for close stateless connection */
896: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
897: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
898: c, ts, c, 0);
899: }
900:
1.22 misho 901: noreply = RPC_CHK_NOREPLY(rpc);
1.18 misho 902:
1.27 misho 903: /* execute RPC call */
904: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
1.13 misho 905:
1.22 misho 906: /* send RPC reply */
907: if (!noreply)
1.24 misho 908: schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
1.22 misho 909: c, TASK_FD(task), rpc, len);
1.13 misho 910: end:
1.24 misho 911: AIT_FREE_VAL(&b);
1.13 misho 912: schedReadSelf(task);
1.28.2.2! misho 913: #else
! 914: rpc_SetErr(ENOTSUP, "Feature isn't supported on Linux!");
! 915: #endif
! 916:
1.27 misho 917: taskExit(task, NULL);
1.13 misho 918: }
919:
1.25 misho 920:
921: static void *
922: txEXTPacket(sched_task_t *task)
923: {
924: rpc_cli_t *c = TASK_ARG(task);
925: rpc_srv_t *s = c->cli_parent;
926: rpc_func_t *f = NULL;
927: u_char *buf = AIT_GET_BUF(&c->cli_buf);
928: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
1.27 misho 929: int ret, wlen = sizeof(struct tagRPCCall);
1.25 misho 930: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
931:
932: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
933: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
934: TASK_ARG(task), ts, TASK_ARG(task), 0);
935:
936: if (rpc->call_argc) {
937: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
938: if (!f) {
939: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
1.27 misho 940:
941: rpc->call_argc ^= rpc->call_argc;
942: RPC_SET_RETURN(rpc, -1);
943: RPC_SET_ERRNO(rpc, rpc_Errno);
944: } else if (rpc_pktFreeSpace(c) > s->srv_netbuf) {
945: rpc_SetErr(EMSGSIZE, "Message too long");
946:
1.25 misho 947: rpc->call_argc ^= rpc->call_argc;
1.27 misho 948: RPC_SET_RETURN(rpc, -1);
949: RPC_SET_ERRNO(rpc, rpc_Errno);
1.25 misho 950: } else {
951: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
952: /* Go Encapsulate variables */
953: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
954: RPC_RETVARS(c));
955: if (ret == -1) {
956: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
1.27 misho 957:
1.25 misho 958: rpc->call_argc ^= rpc->call_argc;
1.27 misho 959: RPC_SET_RETURN(rpc, -1);
960: RPC_SET_ERRNO(rpc, rpc_Errno);
1.25 misho 961: } else
962: wlen += ret;
963: }
964: }
965:
1.27 misho 966: /* Free return values */
967: ait_freeVars(&RPC_RETVARS(c));
968:
1.25 misho 969: rpc->call_len = htonl(wlen);
970: rpc->call_io = RPC_ACK;
971:
972: /* send reply */
1.27 misho 973: ret = write(TASK_FD(task), buf, wlen);
1.25 misho 974: if (ret == -1) {
975: /* close connection */
976: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
977: TASK_ARG(task), 0, NULL, 0);
978: }
979:
1.27 misho 980: taskExit(task, NULL);
1.25 misho 981: }
982:
983: static void *
984: rxEXTPacket(sched_task_t *task)
985: {
986: rpc_srv_t *srv = TASK_ARG(task);
987: rpc_cli_t *c = NULL;
1.27 misho 988: int len, noreply = 0, rlen = AIT_LEN(&c->cli_buf);
1.25 misho 989: struct tagRPCCall *rpc;
990: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
1.27 misho 991: sockaddr_t sa;
1.25 misho 992: ait_val_t b = AIT_VAL_INIT;
993:
994: memset(&sa, 0, sizeof sa);
995: /* receive connect packet */
996: AIT_SET_BUF(&b, NULL, srv->srv_netbuf);
997: rlen = read(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b));
1.27 misho 998: rpc = (struct tagRPCCall*) AIT_GET_BUF(&b);
999: if (rlen < sizeof(struct tagRPCCall))
1000: goto end;
1001: else
1002: len = ntohl(rpc->call_len);
1003: if (rlen < len || len > srv->srv_netbuf)
1004: goto end;
1005:
1006: /* skip loop packet */
1007: if (rpc->call_io & RPC_ACK)
1.25 misho 1008: goto end;
1009:
1.27 misho 1010: /* check RPC packet session info */
1011: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session))
1012: goto end;
1.25 misho 1013:
1014: c = _allocClient(srv, &sa);
1015: if (!c) {
1016: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
1017: usleep(2000); /* blocked client delay */
1018: goto end;
1019: } else {
1.27 misho 1020: memcpy(AIT_GET_BUF(&c->cli_buf), AIT_GET_BUF(&b), len);
1.25 misho 1021: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
1022:
1023: c->cli_sock = TASK_FD(task);
1024:
1025: /* armed timer for close stateless connection */
1026: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
1027: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
1028: c, ts, c, 0);
1029: }
1030:
1031: noreply = RPC_CHK_NOREPLY(rpc);
1032:
1.27 misho 1033: /* execute RPC call */
1034: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
1.25 misho 1035:
1036: /* send RPC reply */
1037: if (!noreply)
1038: schedWrite(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
1039: c, TASK_FD(task), rpc, len);
1040: end:
1041: AIT_FREE_VAL(&b);
1042: schedReadSelf(task);
1.27 misho 1043: taskExit(task, NULL);
1.25 misho 1044: }
1045:
1.13 misho 1046: /* ------------------------------------------------------ */
1047:
1.16 misho 1048: void
1.13 misho 1049: rpc_freeBLOBCli(rpc_cli_t * __restrict c)
1050: {
1051: rpc_srv_t *s = c->cli_parent;
1052:
1053: schedCancelby(s->srv_blob.root, taskMAX, CRITERIA_ARG, c, NULL);
1.10 misho 1054:
1055: /* free buffer */
1056: AIT_FREE_VAL(&c->cli_buf);
1057:
1.14 misho 1058: array_Del(s->srv_blob.clients, c->cli_id, 0);
1.10 misho 1059: if (c)
1.14 misho 1060: e_free(c);
1.13 misho 1061: }
1062:
1063:
1064: static void *
1065: closeBLOBClient(sched_task_t *task)
1066: {
1067: int sock = ((rpc_cli_t*) TASK_ARG(task))->cli_sock;
1068:
1069: rpc_freeBLOBCli(TASK_ARG(task));
1070:
1071: /* close client socket */
1072: shutdown(sock, SHUT_RDWR);
1073: close(sock);
1.27 misho 1074: taskExit(task, NULL);
1.7 misho 1075: }
1076:
1077: static void *
1078: txBLOB(sched_task_t *task)
1079: {
1.10 misho 1080: rpc_cli_t *c = TASK_ARG(task);
1081: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1.7 misho 1082: int wlen = sizeof(struct tagBLOBHdr);
1083:
1084: /* send reply */
1.10 misho 1085: wlen = send(TASK_FD(task), buf, wlen, MSG_NOSIGNAL);
1086: if (wlen == -1 || wlen != sizeof(struct tagBLOBHdr)) {
1087: /* close blob connection */
1088: schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0);
1089: }
1.7 misho 1090:
1.27 misho 1091: taskExit(task, NULL);
1.7 misho 1092: }
1.4 misho 1093:
1.7 misho 1094: static void *
1095: rxBLOB(sched_task_t *task)
1096: {
1097: rpc_cli_t *c = TASK_ARG(task);
1098: rpc_srv_t *s = c->cli_parent;
1099: rpc_blob_t *b;
1.10 misho 1100: struct tagBLOBHdr blob;
1.7 misho 1101: int rlen;
1102:
1.10 misho 1103: memset(&blob, 0, sizeof blob);
1104: rlen = recv(TASK_FD(task), &blob, sizeof blob, 0);
1105: if (rlen < 1) {
1106: /* close blob connection */
1107: schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0);
1.27 misho 1108: taskExit(task, NULL);
1.7 misho 1109: }
1.5 misho 1110:
1.10 misho 1111: /* check BLOB packet */
1112: if (rlen < sizeof(struct tagBLOBHdr)) {
1113: rpc_SetErr(ERPCMISMATCH, "Short BLOB packet");
1.6 misho 1114:
1.10 misho 1115: schedReadSelf(task);
1.27 misho 1116: taskExit(task, NULL);
1.7 misho 1117: }
1.1 misho 1118:
1.7 misho 1119: /* check RPC packet session info */
1.15 misho 1120: if (rpc_chkPktSession(&blob.hdr_session, &s->srv_session)) {
1.7 misho 1121: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
1.10 misho 1122: blob.hdr_cmd = error;
1.7 misho 1123: goto end;
1124: }
1125:
1126: /* Go to proceed packet ... */
1.10 misho 1127: switch (blob.hdr_cmd) {
1.7 misho 1128: case get:
1.10 misho 1129: if (!(b = rpc_srv_getBLOB(s, ntohl(blob.hdr_var)))) {
1130: rpc_SetErr(EINVAL, "Var=%x not found", ntohl(blob.hdr_var));
1131: blob.hdr_cmd = no;
1.27 misho 1132: RPC_SET_BLOB_RET(&blob, -1);
1.7 misho 1133: break;
1134: } else
1.10 misho 1135: blob.hdr_len = htonl(b->blob_len);
1.5 misho 1136:
1.7 misho 1137: if (rpc_srv_blobMap(s, b) != -1) {
1138: /* deliver BLOB variable to client */
1.10 misho 1139: blob.hdr_ret = htonl(rpc_srv_sendBLOB(c, b));
1.7 misho 1140: rpc_srv_blobUnmap(b);
1141: } else {
1.10 misho 1142: blob.hdr_cmd = error;
1.27 misho 1143: RPC_SET_BLOB_RET(&blob, -1);
1.7 misho 1144: }
1145: break;
1146: case set:
1.17 misho 1147: if ((b = rpc_srv_registerBLOB(s, ntohl(blob.hdr_len),
1148: ntohl(blob.hdr_ret)))) {
1.7 misho 1149: /* set new BLOB variable for reply :) */
1.10 misho 1150: blob.hdr_var = htonl(b->blob_var);
1.7 misho 1151:
1152: /* receive BLOB from client */
1.10 misho 1153: blob.hdr_ret = htonl(rpc_srv_recvBLOB(c, b));
1.7 misho 1154: rpc_srv_blobUnmap(b);
1.5 misho 1155: } else {
1.10 misho 1156: blob.hdr_cmd = error;
1.27 misho 1157: RPC_SET_BLOB_RET(&blob, -1);
1.7 misho 1158: }
1159: break;
1160: case unset:
1.11 misho 1161: if (rpc_srv_unregisterBLOB(s, ntohl(blob.hdr_var)) == -1) {
1.10 misho 1162: blob.hdr_cmd = error;
1.27 misho 1163: RPC_SET_BLOB_RET(&blob, -1);
1.1 misho 1164: }
1165: break;
1.7 misho 1166: default:
1.10 misho 1167: rpc_SetErr(EPROCUNAVAIL, "Unsupported BLOB command %d", blob.hdr_cmd);
1168: blob.hdr_cmd = error;
1.27 misho 1169: RPC_SET_BLOB_RET(&blob, -1);
1.7 misho 1170: }
1.1 misho 1171:
1.7 misho 1172: end:
1.10 misho 1173: memcpy(AIT_ADDR(&c->cli_buf), &blob, sizeof blob);
1174: schedWrite(TASK_ROOT(task), txBLOB, TASK_ARG(task), TASK_FD(task), NULL, 0);
1175: schedReadSelf(task);
1.27 misho 1176: taskExit(task, NULL);
1.2 misho 1177: }
1178:
1179: static void *
1.17 misho 1180: flushBLOB(sched_task_t *task)
1181: {
1.28 misho 1182: #ifdef atomic_load_acq_ptr
1.23 misho 1183: uintptr_t sigArg = atomic_load_acq_ptr(&_glSigArg);
1.28 misho 1184: #else
1185: uintptr_t sigArg = *((volatile uintptr_t*) &_glSigArg);
1186: #endif
1.23 misho 1187: rpc_srv_t *srv = sigArg ? (void*) sigArg : TASK_ARG(task);
1.17 misho 1188: rpc_blob_t *b, *tmp;
1189:
1190: TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) {
1191: TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node);
1192:
1193: rpc_srv_blobFree(srv, b);
1194: e_free(b);
1195: }
1196:
1.23 misho 1197: if (!schedSignalSelf(task)) {
1198: /* disabled kqueue support in libaitsched */
1199: struct sigaction sa;
1200:
1201: memset(&sa, 0, sizeof sa);
1202: sigemptyset(&sa.sa_mask);
1203: sa.sa_handler = (void (*)(int)) flushBLOB;
1204: sa.sa_flags = SA_RESTART | SA_RESETHAND;
1205: sigaction(SIGFBLOB, &sa, NULL);
1206: }
1207:
1.27 misho 1208: taskExit(task, NULL);
1.17 misho 1209: }
1210:
1211: static void *
1.10 misho 1212: acceptBLOBClients(sched_task_t *task)
1.2 misho 1213: {
1.10 misho 1214: rpc_srv_t *srv = TASK_ARG(task);
1215: rpc_cli_t *c = NULL;
1216: register int i;
1.14 misho 1217: socklen_t salen = sizeof(sockaddr_t);
1.21 misho 1218: int sock;
1.12 misho 1219: #ifdef TCP_NOPUSH
1220: int n = 1;
1221: #endif
1.7 misho 1222:
1.10 misho 1223: /* check free slots for connect */
1.14 misho 1224: for (i = 0; i < array_Size(srv->srv_blob.clients) &&
1225: (c = array(srv->srv_blob.clients, i, rpc_cli_t*)); i++);
1.21 misho 1226: if (c) { /* no more free slots! */
1227: EVERBOSE(1, "BLOB client quota exceeded! Connection will be shutdown!\n");
1228: if ((sock = accept(TASK_FD(task), NULL, NULL)) != -1) {
1229: shutdown(sock, SHUT_RDWR);
1230: close(sock);
1231: }
1.10 misho 1232: goto end;
1.21 misho 1233: }
1234:
1.14 misho 1235: c = e_malloc(sizeof(rpc_cli_t));
1.10 misho 1236: if (!c) {
1.7 misho 1237: LOGERR;
1.10 misho 1238: srv->srv_kill = srv->srv_blob.kill = 1;
1.27 misho 1239: taskExit(task, NULL);
1.7 misho 1240: } else {
1.10 misho 1241: memset(c, 0, sizeof(rpc_cli_t));
1.14 misho 1242: array_Set(srv->srv_blob.clients, i, c);
1.10 misho 1243: c->cli_id = i;
1244: c->cli_parent = srv;
1.7 misho 1245: }
1.4 misho 1246:
1.10 misho 1247: /* alloc empty buffer */
1.14 misho 1248: AIT_SET_BUFSIZ(&c->cli_buf, 0, srv->srv_netbuf);
1.2 misho 1249:
1.10 misho 1250: /* accept client */
1251: c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen);
1252: if (c->cli_sock == -1) {
1253: LOGERR;
1254: AIT_FREE_VAL(&c->cli_buf);
1.14 misho 1255: array_Del(srv->srv_blob.clients, i, 42);
1.10 misho 1256: goto end;
1.12 misho 1257: } else {
1258: #ifdef TCP_NOPUSH
1259: setsockopt(c->cli_sock, IPPROTO_TCP, TCP_NOPUSH, &n, sizeof n);
1260: #endif
1.10 misho 1261: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
1.12 misho 1262: }
1.2 misho 1263:
1.10 misho 1264: schedRead(TASK_ROOT(task), rxBLOB, c, c->cli_sock, NULL, 0);
1265: end:
1266: schedReadSelf(task);
1.27 misho 1267: taskExit(task, NULL);
1.1 misho 1268: }
1269:
1.10 misho 1270: /* ------------------------------------------------------ */
1.1 misho 1271:
1272: /*
1.7 misho 1273: * rpc_srv_initBLOBServer() - Init & create BLOB Server
1274: *
1.4 misho 1275: * @srv = RPC server instance
1.2 misho 1276: * @Port = Port for bind server, if Port == 0 default port is selected
1277: * @diskDir = Disk place for BLOB file objects
1278: * return: -1 == error or 0 bind and created BLOB server instance
1279: */
1280: int
1281: rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, u_short Port, const char *diskDir)
1282: {
1283: int n = 1;
1284:
1.10 misho 1285: if (!srv || srv->srv_kill) {
1.7 misho 1286: rpc_SetErr(EINVAL, "Invalid parameters can`t init BLOB server");
1.2 misho 1287: return -1;
1288: }
1289:
1290: memset(&srv->srv_blob, 0, sizeof srv->srv_blob);
1291: if (access(diskDir, R_OK | W_OK) == -1) {
1292: LOGERR;
1293: return -1;
1294: } else
1.7 misho 1295: AIT_SET_STR(&srv->srv_blob.dir, diskDir);
1.2 misho 1296:
1.10 misho 1297: /* init blob list */
1298: TAILQ_INIT(&srv->srv_blob.blobs);
1299:
1.2 misho 1300: srv->srv_blob.server.cli_parent = srv;
1.4 misho 1301:
1.14 misho 1302: memcpy(&srv->srv_blob.server.cli_sa, &srv->srv_server.cli_sa, sizeof(sockaddr_t));
1.10 misho 1303: switch (srv->srv_blob.server.cli_sa.sa.sa_family) {
1.4 misho 1304: case AF_INET:
1.10 misho 1305: srv->srv_blob.server.cli_sa.sin.sin_port =
1306: htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin.sin_port) + 1);
1.4 misho 1307: break;
1308: case AF_INET6:
1.10 misho 1309: srv->srv_blob.server.cli_sa.sin6.sin6_port =
1310: htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin6.sin6_port) + 1);
1.4 misho 1311: break;
1312: case AF_LOCAL:
1.10 misho 1313: strlcat(srv->srv_blob.server.cli_sa.sun.sun_path, ".blob",
1314: sizeof srv->srv_blob.server.cli_sa.sun.sun_path);
1.4 misho 1315: break;
1316: default:
1.7 misho 1317: AIT_FREE_VAL(&srv->srv_blob.dir);
1.4 misho 1318: return -1;
1.2 misho 1319: }
1320:
1.4 misho 1321: /* create BLOB server socket */
1.6 misho 1322: srv->srv_blob.server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, SOCK_STREAM, 0);
1.2 misho 1323: if (srv->srv_blob.server.cli_sock == -1) {
1324: LOGERR;
1.7 misho 1325: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 1326: return -1;
1327: }
1328: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
1329: LOGERR;
1330: close(srv->srv_blob.server.cli_sock);
1.7 misho 1331: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 1332: return -1;
1333: }
1.5 misho 1334: n = srv->srv_netbuf;
1335: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
1336: LOGERR;
1337: close(srv->srv_blob.server.cli_sock);
1.7 misho 1338: AIT_FREE_VAL(&srv->srv_blob.dir);
1.5 misho 1339: return -1;
1340: }
1341: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
1342: LOGERR;
1343: close(srv->srv_blob.server.cli_sock);
1.7 misho 1344: AIT_FREE_VAL(&srv->srv_blob.dir);
1.5 misho 1345: return -1;
1346: }
1.6 misho 1347: if (bind(srv->srv_blob.server.cli_sock, &srv->srv_blob.server.cli_sa.sa,
1.28.2.2! misho 1348: sizeof srv->srv_blob.server.cli_sa.sa) == -1) {
1.2 misho 1349: LOGERR;
1350: close(srv->srv_blob.server.cli_sock);
1.7 misho 1351: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 1352: return -1;
1.13 misho 1353: } else
1354: fcntl(srv->srv_blob.server.cli_sock, F_SETFL,
1355: fcntl(srv->srv_blob.server.cli_sock, F_GETFL) | O_NONBLOCK);
1356:
1.2 misho 1357:
1.10 misho 1358: /* allocate pool for concurent blob clients */
1.14 misho 1359: srv->srv_blob.clients = array_Init(array_Size(srv->srv_clients));
1.2 misho 1360: if (!srv->srv_blob.clients) {
1.14 misho 1361: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1.2 misho 1362: close(srv->srv_blob.server.cli_sock);
1.7 misho 1363: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 1364: return -1;
1.10 misho 1365: }
1.2 misho 1366:
1.10 misho 1367: /* init blob scheduler */
1368: srv->srv_blob.root = schedBegin();
1369: if (!srv->srv_blob.root) {
1370: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1.14 misho 1371: array_Destroy(&srv->srv_blob.clients);
1.10 misho 1372: close(srv->srv_blob.server.cli_sock);
1373: AIT_FREE_VAL(&srv->srv_blob.dir);
1374: return -1;
1375: }
1.2 misho 1376:
1377: return 0;
1378: }
1379:
1380: /*
1.7 misho 1381: * rpc_srv_endBLOBServer() - Destroy BLOB server, close all opened sockets and free resources
1382: *
1.2 misho 1383: * @srv = RPC Server instance
1384: * return: none
1385: */
1.16 misho 1386: void
1.2 misho 1387: rpc_srv_endBLOBServer(rpc_srv_t * __restrict srv)
1388: {
1.10 misho 1389: if (!srv)
1.2 misho 1390: return;
1391:
1.10 misho 1392: srv->srv_blob.kill = 1;
1.17 misho 1393:
1.27 misho 1394: if (srv->srv_blob.server.cli_sa.sa.sa_family == AF_LOCAL)
1395: unlink(srv->srv_blob.server.cli_sa.sun.sun_path);
1.28 misho 1396:
1397: schedEnd(&srv->srv_blob.root);
1.2 misho 1398: }
1399:
1400: /*
1.10 misho 1401: * rpc_srv_loopBLOBServer() - Execute Main BLOB server loop and wait for clients requests
1.7 misho 1402: *
1.2 misho 1403: * @srv = RPC Server instance
1404: * return: -1 error or 0 ok, infinite loop ...
1405: */
1406: int
1.10 misho 1407: rpc_srv_loopBLOBServer(rpc_srv_t * __restrict srv)
1.2 misho 1408: {
1.10 misho 1409: rpc_cli_t *c;
1.2 misho 1410: register int i;
1.10 misho 1411: rpc_blob_t *b, *tmp;
1412: struct timespec ts = { RPC_SCHED_POLLING, 0 };
1.2 misho 1413:
1.10 misho 1414: if (!srv || srv->srv_kill) {
1.7 misho 1415: rpc_SetErr(EINVAL, "Invalid parameter can`t start BLOB server");
1.2 misho 1416: return -1;
1417: }
1418:
1.14 misho 1419: if (listen(srv->srv_blob.server.cli_sock, array_Size(srv->srv_blob.clients)) == -1) {
1.2 misho 1420: LOGERR;
1421: return -1;
1.10 misho 1422: }
1423:
1.23 misho 1424: if (!schedSignal(srv->srv_blob.root, flushBLOB, srv, SIGFBLOB, NULL, 0)) {
1425: /* disabled kqueue support in libaitsched */
1426: struct sigaction sa;
1427:
1.28 misho 1428: #ifdef atomic_store_rel_ptr
1.23 misho 1429: atomic_store_rel_ptr(&_glSigArg, (uintptr_t) srv);
1.28 misho 1430: #else
1431: *((volatile uintptr_t*) &_glSigArg) = (uintptr_t) srv;
1432: #endif
1.23 misho 1433:
1434: memset(&sa, 0, sizeof sa);
1435: sigemptyset(&sa.sa_mask);
1436: sa.sa_handler = (void (*)(int)) flushBLOB;
1437: sa.sa_flags = SA_RESTART | SA_RESETHAND;
1438: sigaction(SIGFBLOB, &sa, NULL);
1439: }
1440:
1.10 misho 1441: if (!schedRead(srv->srv_blob.root, acceptBLOBClients, srv,
1442: srv->srv_blob.server.cli_sock, NULL, 0)) {
1443: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1444: return -1;
1445: }
1.2 misho 1446:
1.10 misho 1447: schedPolling(srv->srv_blob.root, &ts, NULL);
1448: /* main rpc loop */
1449: schedRun(srv->srv_blob.root, &srv->srv_blob.kill);
1.7 misho 1450:
1.17 misho 1451: /* detach blobs */
1452: TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) {
1453: TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node);
1454:
1455: rpc_srv_blobFree(srv, b);
1456: e_free(b);
1457: }
1458:
1.10 misho 1459: /* close all clients connections & server socket */
1.14 misho 1460: for (i = 0; i < array_Size(srv->srv_blob.clients); i++) {
1461: c = array(srv->srv_blob.clients, i, rpc_cli_t*);
1.10 misho 1462: if (c) {
1463: shutdown(c->cli_sock, SHUT_RDWR);
1464: close(c->cli_sock);
1465:
1466: schedCancelby(srv->srv_blob.root, taskMAX, CRITERIA_ARG, c, NULL);
1467: AIT_FREE_VAL(&c->cli_buf);
1.2 misho 1468: }
1.14 misho 1469: array_Del(srv->srv_blob.clients, i, 42);
1.10 misho 1470: }
1.14 misho 1471: array_Destroy(&srv->srv_blob.clients);
1.2 misho 1472:
1.10 misho 1473: close(srv->srv_blob.server.cli_sock);
1.2 misho 1474:
1.10 misho 1475: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 1476: return 0;
1477: }
1478:
1479:
1480: /*
1.7 misho 1481: * rpc_srv_initServer() - Init & create RPC Server
1482: *
1.15 misho 1483: * @InstID = Instance for authentication & recognition
1.1 misho 1484: * @concurentClients = Concurent clients at same time to this server
1.10 misho 1485: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
1.4 misho 1486: * @csHost = Host name or address for bind server, if NULL any address
1.1 misho 1487: * @Port = Port for bind server, if Port == 0 default port is selected
1.13 misho 1488: * @proto = Protocol, if == 0 choose SOCK_STREAM
1.1 misho 1489: * return: NULL == error or !=NULL bind and created RPC server instance
1490: */
1491: rpc_srv_t *
1.15 misho 1492: rpc_srv_initServer(u_char InstID, int concurentClients, int netBuf,
1493: const char *csHost, u_short Port, int proto)
1.1 misho 1494: {
1.10 misho 1495: int n = 1;
1.1 misho 1496: rpc_srv_t *srv = NULL;
1.14 misho 1497: sockaddr_t sa = E_SOCKADDR_INIT;
1.1 misho 1498:
1.25 misho 1499: if (!concurentClients || (proto < 0 || proto > SOCK_RAW)) {
1.10 misho 1500: rpc_SetErr(EINVAL, "Invalid parameters can`t init RPC server");
1.1 misho 1501: return NULL;
1502: }
1.27 misho 1503: if (!Port && proto < SOCK_RAW)
1504: Port = RPC_DEFPORT;
1.14 misho 1505: if (!e_gethostbyname(csHost, Port, &sa))
1.10 misho 1506: return NULL;
1.13 misho 1507: if (!proto)
1508: proto = SOCK_STREAM;
1.10 misho 1509: if (netBuf < RPC_MIN_BUFSIZ)
1.5 misho 1510: netBuf = BUFSIZ;
1.7 misho 1511: else
1.14 misho 1512: netBuf = E_ALIGN(netBuf, 2); /* align netBuf length */
1.10 misho 1513:
1514: #ifdef HAVE_SRANDOMDEV
1515: srandomdev();
1516: #else
1517: time_t tim;
1518:
1519: srandom((time(&tim) ^ getpid()));
1520: #endif
1.1 misho 1521:
1.14 misho 1522: srv = e_malloc(sizeof(rpc_srv_t));
1.1 misho 1523: if (!srv) {
1524: LOGERR;
1525: return NULL;
1526: } else
1527: memset(srv, 0, sizeof(rpc_srv_t));
1528:
1.13 misho 1529: srv->srv_proto = proto;
1.5 misho 1530: srv->srv_netbuf = netBuf;
1.1 misho 1531: srv->srv_session.sess_version = RPC_VERSION;
1.15 misho 1532: srv->srv_session.sess_instance = InstID;
1.1 misho 1533:
1534: srv->srv_server.cli_parent = srv;
1.10 misho 1535: memcpy(&srv->srv_server.cli_sa, &sa, sizeof srv->srv_server.cli_sa);
1536:
1.12 misho 1537: /* init functions */
1538: pthread_mutex_init(&srv->srv_funcs.mtx, NULL);
1539: SLIST_INIT(&srv->srv_funcs);
1540: AVL_INIT(&srv->srv_funcs);
1.10 misho 1541:
1542: /* init scheduler */
1543: srv->srv_root = schedBegin();
1544: if (!srv->srv_root) {
1545: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1.12 misho 1546: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1.14 misho 1547: e_free(srv);
1.10 misho 1548: return NULL;
1549: }
1550:
1551: /* init pool for clients */
1.14 misho 1552: srv->srv_clients = array_Init(concurentClients);
1.10 misho 1553: if (!srv->srv_clients) {
1.14 misho 1554: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1.10 misho 1555: schedEnd(&srv->srv_root);
1.12 misho 1556: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1.14 misho 1557: e_free(srv);
1.10 misho 1558: return NULL;
1559: }
1.4 misho 1560:
1561: /* create server socket */
1.26 misho 1562: srv->srv_server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family,
1563: srv->srv_proto, srv->srv_proto == SOCK_RAW ? IPPROTO_ERPC : 0);
1.1 misho 1564: if (srv->srv_server.cli_sock == -1) {
1565: LOGERR;
1.14 misho 1566: array_Destroy(&srv->srv_clients);
1.10 misho 1567: schedEnd(&srv->srv_root);
1.12 misho 1568: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1.14 misho 1569: e_free(srv);
1.1 misho 1570: return NULL;
1571: }
1572: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
1573: LOGERR;
1.10 misho 1574: goto err;
1.1 misho 1575: }
1.27 misho 1576: if (srv->srv_proto == SOCK_STREAM)
1577: setsockopt(srv->srv_server.cli_sock, IPPROTO_TCP, TCP_NODELAY, &n, sizeof n);
1.5 misho 1578: n = srv->srv_netbuf;
1579: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
1580: LOGERR;
1.10 misho 1581: goto err;
1.5 misho 1582: }
1583: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
1584: LOGERR;
1.10 misho 1585: goto err;
1.5 misho 1586: }
1.6 misho 1587: if (bind(srv->srv_server.cli_sock, &srv->srv_server.cli_sa.sa,
1.28.2.2! misho 1588: sizeof srv->srv_server.cli_sa.sa) == -1) {
1.1 misho 1589: LOGERR;
1.10 misho 1590: goto err;
1.13 misho 1591: } else
1592: fcntl(srv->srv_server.cli_sock, F_SETFL,
1593: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
1.1 misho 1594:
1.10 misho 1595: rpc_register_srvPing(srv);
1.8 misho 1596:
1.1 misho 1597: return srv;
1.10 misho 1598: err: /* error condition */
1599: close(srv->srv_server.cli_sock);
1.14 misho 1600: array_Destroy(&srv->srv_clients);
1.10 misho 1601: schedEnd(&srv->srv_root);
1.12 misho 1602: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1.14 misho 1603: e_free(srv);
1.10 misho 1604: return NULL;
1.1 misho 1605: }
1606:
1607: /*
1.7 misho 1608: * rpc_srv_endServer() - Destroy RPC server, close all opened sockets and free resources
1609: *
1.6 misho 1610: * @psrv = RPC Server instance
1.1 misho 1611: * return: none
1612: */
1.16 misho 1613: void
1.6 misho 1614: rpc_srv_endServer(rpc_srv_t ** __restrict psrv)
1.1 misho 1615: {
1.10 misho 1616: if (!psrv || !*psrv)
1.1 misho 1617: return;
1618:
1.10 misho 1619: /* if send kill to blob server */
1.17 misho 1620: rpc_srv_endBLOBServer(*psrv);
1.28 misho 1621: /* wait for BLOB server done */
1622: while (*(&(*psrv)->srv_blob.root))
1623: usleep(1000);
1.1 misho 1624:
1.10 misho 1625: (*psrv)->srv_kill = 1;
1626: sleep(RPC_SCHED_POLLING);
1.2 misho 1627:
1.27 misho 1628: if ((*psrv)->srv_server.cli_sa.sa.sa_family == AF_LOCAL)
1629: unlink((*psrv)->srv_server.cli_sa.sun.sun_path);
1630:
1.28 misho 1631: schedEnd(&(*psrv)->srv_root);
1632:
1.12 misho 1633: pthread_mutex_destroy(&(*psrv)->srv_funcs.mtx);
1.14 misho 1634: e_free(*psrv);
1.6 misho 1635: *psrv = NULL;
1.1 misho 1636: }
1637:
1638: /*
1.7 misho 1639: * rpc_srv_loopServer() - Execute Main server loop and wait for clients requests
1640: *
1.1 misho 1641: * @srv = RPC Server instance
1642: * return: -1 error or 0 ok, infinite loop ...
1643: */
1644: int
1.5 misho 1645: rpc_srv_loopServer(rpc_srv_t * __restrict srv)
1.1 misho 1646: {
1.10 misho 1647: rpc_cli_t *c;
1.1 misho 1648: register int i;
1.12 misho 1649: rpc_func_t *f;
1.10 misho 1650: struct timespec ts = { RPC_SCHED_POLLING, 0 };
1.1 misho 1651:
1652: if (!srv) {
1.10 misho 1653: rpc_SetErr(EINVAL, "Invalid parameter can`t start RPC server");
1.1 misho 1654: return -1;
1655: }
1656:
1.13 misho 1657: if (srv->srv_proto == SOCK_STREAM)
1.14 misho 1658: if (listen(srv->srv_server.cli_sock, array_Size(srv->srv_clients)) == -1) {
1.13 misho 1659: LOGERR;
1660: return -1;
1661: }
1.1 misho 1662:
1.13 misho 1663: if (!schedRead(srv->srv_root, cbProto[srv->srv_proto][CB_ACCEPTCLIENT], srv,
1664: srv->srv_server.cli_sock, NULL, 0)) {
1.10 misho 1665: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1666: return -1;
1667: }
1.7 misho 1668:
1.10 misho 1669: schedPolling(srv->srv_root, &ts, NULL);
1.7 misho 1670: /* main rpc loop */
1.10 misho 1671: schedRun(srv->srv_root, &srv->srv_kill);
1672:
1673: /* close all clients connections & server socket */
1.14 misho 1674: for (i = 0; i < array_Size(srv->srv_clients); i++) {
1675: c = array(srv->srv_clients, i, rpc_cli_t*);
1.10 misho 1676: if (c) {
1.24 misho 1677: if (srv->srv_proto == SOCK_STREAM) {
1678: shutdown(c->cli_sock, SHUT_RDWR);
1679: close(c->cli_sock);
1680: }
1.10 misho 1681:
1682: schedCancelby(srv->srv_root, taskMAX, CRITERIA_ARG, c, NULL);
1.14 misho 1683: ait_freeVars(&RPC_RETVARS(c));
1.10 misho 1684: AIT_FREE_VAL(&c->cli_buf);
1.1 misho 1685: }
1.14 misho 1686: array_Del(srv->srv_clients, i, 42);
1.10 misho 1687: }
1.14 misho 1688: array_Destroy(&srv->srv_clients);
1.2 misho 1689:
1.25 misho 1690: if (srv->srv_proto != SOCK_EXT)
1691: close(srv->srv_server.cli_sock);
1.2 misho 1692:
1.10 misho 1693: /* detach exported calls */
1.12 misho 1694: RPC_FUNCS_LOCK(&srv->srv_funcs);
1695: while ((f = SLIST_FIRST(&srv->srv_funcs))) {
1696: SLIST_REMOVE_HEAD(&srv->srv_funcs, func_next);
1.1 misho 1697:
1.10 misho 1698: AIT_FREE_VAL(&f->func_name);
1.14 misho 1699: e_free(f);
1.1 misho 1700: }
1.12 misho 1701: srv->srv_funcs.avlh_root = NULL;
1702: RPC_FUNCS_UNLOCK(&srv->srv_funcs);
1.1 misho 1703:
1704: return 0;
1705: }
1706:
1707:
1708: /*
1709: * rpc_srv_execCall() Execute registered call from RPC server
1.7 misho 1710: *
1.10 misho 1711: * @cli = RPC client
1.1 misho 1712: * @rpc = IN RPC call structure
1.10 misho 1713: * @funcname = Execute RPC function
1.5 misho 1714: * @args = IN RPC calling arguments from RPC client
1.1 misho 1715: * return: -1 error, !=-1 ok
1716: */
1717: int
1.10 misho 1718: rpc_srv_execCall(rpc_cli_t * __restrict cli, struct tagRPCCall * __restrict rpc,
1719: ait_val_t funcname, array_t * __restrict args)
1.1 misho 1720: {
1721: rpc_callback_t func;
1722:
1.10 misho 1723: if (!cli || !rpc || !AIT_ADDR(&funcname)) {
1.7 misho 1724: rpc_SetErr(EINVAL, "Invalid parameter can`t exec function");
1.1 misho 1725: return -1;
1726: }
1727:
1.10 misho 1728: func = AIT_GET_LIKE(&funcname, rpc_callback_t);
1729: return func(cli, rpc, args);
1.1 misho 1730: }
1.24 misho 1731:
1732:
1733: /*
1734: * rpc_srv_initServer2() - Init & create layer2 RPC Server
1735: *
1736: * @InstID = Instance for authentication & recognition
1737: * @concurentClients = Concurent clients at same time to this server
1738: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
1739: * @csIface = Interface name for bind server, if NULL first interface on host
1740: * return: NULL == error or !=NULL bind and created RPC server instance
1741: */
1742: rpc_srv_t *
1743: rpc_srv_initServer2(u_char InstID, int concurentClients, int netBuf, const char *csIface)
1744: {
1.28.2.2! misho 1745: #ifndef __linux__
1.24 misho 1746: int n = 1;
1747: rpc_srv_t *srv = NULL;
1748: sockaddr_t sa = E_SOCKADDR_INIT;
1749: char szIface[64], szStr[STRSIZ];
1750: register int i;
1751: struct ifreq ifr;
1752: struct bpf_insn insns[] = {
1753: BPF_STMT(BPF_LD + BPF_H + BPF_ABS, 12),
1754: BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, RPC_DEFPORT, 0, 1),
1755: BPF_STMT(BPF_RET + BPF_K, -1),
1756: BPF_STMT(BPF_RET + BPF_K, 0),
1757: };
1758: struct bpf_program fcode = {
1759: .bf_len = sizeof(insns) / sizeof(struct bpf_insn),
1760: .bf_insns = insns
1761: };
1762:
1763: if (!concurentClients) {
1764: rpc_SetErr(EINVAL, "Invalid parameters can`t init RPC server");
1765: return NULL;
1766: }
1767: if (!csIface) {
1768: if (e_get1stiface(szIface, sizeof szIface))
1769: return NULL;
1770: } else
1771: strlcpy(szIface, csIface, sizeof szIface);
1772: if (!e_getifacebyname(szIface, &sa))
1773: return NULL;
1774:
1775: #ifdef HAVE_SRANDOMDEV
1776: srandomdev();
1777: #else
1778: time_t tim;
1779:
1780: srandom((time(&tim) ^ getpid()));
1781: #endif
1782:
1783: srv = e_malloc(sizeof(rpc_srv_t));
1784: if (!srv) {
1785: LOGERR;
1786: return NULL;
1787: } else
1788: memset(srv, 0, sizeof(rpc_srv_t));
1789:
1790: srv->srv_proto = SOCK_BPF;
1791: srv->srv_netbuf = netBuf;
1792: srv->srv_session.sess_version = RPC_VERSION;
1793: srv->srv_session.sess_instance = InstID;
1794:
1795: srv->srv_server.cli_parent = srv;
1796: memcpy(&srv->srv_server.cli_sa, &sa, sizeof srv->srv_server.cli_sa);
1797:
1798: /* init functions */
1799: pthread_mutex_init(&srv->srv_funcs.mtx, NULL);
1800: SLIST_INIT(&srv->srv_funcs);
1801: AVL_INIT(&srv->srv_funcs);
1802:
1803: /* init scheduler */
1804: srv->srv_root = schedBegin();
1805: if (!srv->srv_root) {
1806: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1807: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1808: e_free(srv);
1809: return NULL;
1810: }
1811:
1812: /* init pool for clients */
1813: srv->srv_clients = array_Init(concurentClients);
1814: if (!srv->srv_clients) {
1815: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1816: schedEnd(&srv->srv_root);
1817: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1818: e_free(srv);
1819: return NULL;
1820: }
1821:
1822: /* create server handler */
1823: for (i = 0; i < 10; i++) {
1824: memset(szStr, 0, sizeof szStr);
1825: snprintf(szStr, sizeof szStr, "/dev/bpf%d", i);
1826: srv->srv_server.cli_sock = open(szStr, O_RDWR);
1827: if (srv->srv_server.cli_sock > STDERR_FILENO)
1828: break;
1829: }
1830: if (srv->srv_server.cli_sock < 3) {
1831: LOGERR;
1832: array_Destroy(&srv->srv_clients);
1833: schedEnd(&srv->srv_root);
1834: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1835: e_free(srv);
1836: return NULL;
1837: }
1838:
1839: if (ioctl(srv->srv_server.cli_sock, BIOCIMMEDIATE, &n) == -1) {
1840: LOGERR;
1841: goto err;
1842: }
1843: if (ioctl(srv->srv_server.cli_sock, BIOCSETF, &fcode) == -1) {
1844: LOGERR;
1845: goto err;
1846: }
1847: n = (netBuf < RPC_MIN_BUFSIZ) ? getpagesize() : E_ALIGN(netBuf, 2);
1848: if (ioctl(srv->srv_server.cli_sock, BIOCSBLEN, &n) == -1) {
1849: LOGERR;
1850: goto err;
1851: } else
1852: srv->srv_netbuf = n;
1853:
1854: memset(&ifr, 0, sizeof ifr);
1855: strlcpy(ifr.ifr_name, szIface, sizeof ifr.ifr_name);
1856: if (ioctl(srv->srv_server.cli_sock, BIOCSETIF, &ifr) == -1) {
1857: LOGERR;
1858: goto err;
1859: } else
1860: fcntl(srv->srv_server.cli_sock, F_SETFL,
1861: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
1862:
1863: rpc_register_srvPing(srv);
1864:
1865: return srv;
1866: err: /* error condition */
1867: close(srv->srv_server.cli_sock);
1868: array_Destroy(&srv->srv_clients);
1869: schedEnd(&srv->srv_root);
1870: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1871: e_free(srv);
1.28.2.2! misho 1872: #else
! 1873: rpc_SetErr(ENOTSUP, "Feature isn't supported on Linux!");
! 1874: #endif
! 1875:
1.24 misho 1876: return NULL;
1877: }
1.25 misho 1878:
1879: /*
1880: * rpc_srv_initServerExt() - Init & create pipe RPC Server
1881: *
1882: * @InstID = Instance for authentication & recognition
1883: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
1884: * @fd = File descriptor
1885: * return: NULL == error or !=NULL bind and created RPC server instance
1886: */
1887: rpc_srv_t *
1888: rpc_srv_initServerExt(u_char InstID, int netBuf, int fd)
1889: {
1890: rpc_srv_t *srv = NULL;
1891:
1892: #ifdef HAVE_SRANDOMDEV
1893: srandomdev();
1894: #else
1895: time_t tim;
1896:
1897: srandom((time(&tim) ^ getpid()));
1898: #endif
1899:
1900: srv = e_malloc(sizeof(rpc_srv_t));
1901: if (!srv) {
1902: LOGERR;
1903: return NULL;
1904: } else
1905: memset(srv, 0, sizeof(rpc_srv_t));
1906:
1907: srv->srv_proto = SOCK_EXT;
1908: srv->srv_netbuf = (netBuf < RPC_MIN_BUFSIZ) ?
1909: getpagesize() : E_ALIGN(netBuf, 2);
1910: srv->srv_session.sess_version = RPC_VERSION;
1911: srv->srv_session.sess_instance = InstID;
1912:
1913: srv->srv_server.cli_parent = srv;
1914: srv->srv_server.cli_sock = fd;
1915:
1916: /* init functions */
1917: pthread_mutex_init(&srv->srv_funcs.mtx, NULL);
1918: SLIST_INIT(&srv->srv_funcs);
1919: AVL_INIT(&srv->srv_funcs);
1920:
1921: /* init scheduler */
1922: srv->srv_root = schedBegin();
1923: if (!srv->srv_root) {
1924: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1925: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1926: e_free(srv);
1927: return NULL;
1928: }
1929:
1930: /* init pool for clients */
1931: srv->srv_clients = array_Init(1);
1932: if (!srv->srv_clients) {
1933: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1934: schedEnd(&srv->srv_root);
1935: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1936: e_free(srv);
1937: return NULL;
1938: }
1939:
1940: fcntl(srv->srv_server.cli_sock, F_SETFL,
1941: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
1942:
1943: rpc_register_srvPing(srv);
1944:
1945: return srv;
1946: }
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