Annotation of libaitrpc/src/srv.c, revision 1.34
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 $
1.34 ! misho 6: * $Id: srv.c,v 1.33.2.1 2025/03/31 17:02:29 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:
1.33 misho 15: Copyright 2004 - 2025
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:
1.34 ! misho 72: #ifdef __linux__
! 73: #ifdef __mips__
! 74: static sched_task_func_t cbProto[SOCK_MAX_SUPPORT][4] = {
! 75: { acceptClients, closeClient, rxPacket, txPacket }, /* SOCK_STREAM */
! 76: { rxUDPPacket, freeClient, NULL /*rxUDPPacket*/, txUDPPacket }, /* SOCK_DGRAM */
! 77: { acceptClients, closeClient, rxPacket, txPacket }, /* SOCK_STREAM */
! 78: { rxRAWPacket, freeClient, NULL /*rxRAWPacket*/, txRAWPacket }, /* SOCK_RAW */
! 79: { rxBPFPacket, freeClient, NULL /*rxBPFPacket*/, txBPFPacket }, /* SOCK_BPF */
! 80: { rxEXTPacket, freeClient, NULL /*rxEXTPacket*/, txEXTPacket } /* SOCK_EXT */
! 81: };
! 82: #else
! 83: static sched_task_func_t cbProto[SOCK_MAX_SUPPORT][4] = {
! 84: { acceptClients, closeClient, rxPacket, txPacket }, /* SOCK_STREAM */
! 85: { acceptClients, closeClient, rxPacket, txPacket }, /* SOCK_STREAM */
! 86: { rxUDPPacket, freeClient, NULL /*rxUDPPacket*/, txUDPPacket }, /* SOCK_DGRAM */
! 87: { rxRAWPacket, freeClient, NULL /*rxRAWPacket*/, txRAWPacket }, /* SOCK_RAW */
! 88: { rxBPFPacket, freeClient, NULL /*rxBPFPacket*/, txBPFPacket }, /* SOCK_BPF */
! 89: { rxEXTPacket, freeClient, NULL /*rxEXTPacket*/, txEXTPacket } /* SOCK_EXT */
! 90: };
! 91: #endif
! 92: #else
1.25 misho 93: static sched_task_func_t cbProto[SOCK_MAX_SUPPORT][4] = {
1.27 misho 94: { acceptClients, closeClient, rxPacket, txPacket }, /* SOCK_STREAM */
95: { acceptClients, closeClient, rxPacket, txPacket }, /* SOCK_STREAM */
96: { rxUDPPacket, freeClient, NULL /*rxUDPPacket*/, txUDPPacket }, /* SOCK_DGRAM */
97: { rxRAWPacket, freeClient, NULL /*rxRAWPacket*/, txRAWPacket }, /* SOCK_RAW */
98: { rxBPFPacket, freeClient, NULL /*rxBPFPacket*/, txBPFPacket }, /* SOCK_BPF */
99: { rxEXTPacket, freeClient, NULL /*rxEXTPacket*/, txEXTPacket } /* SOCK_EXT */
1.13 misho 100: };
1.34 ! misho 101: #endif
1.13 misho 102:
1.23 misho 103: /* Global Signal Argument when kqueue support disabled */
104:
105: static volatile uintptr_t _glSigArg = 0;
106:
1.16 misho 107: void
1.13 misho 108: rpc_freeCli(rpc_cli_t * __restrict c)
1.10 misho 109: {
110: rpc_srv_t *s = c->cli_parent;
111:
1.31 misho 112: if (s->srv_proto == SOCK_STREAM)
113: schedCancelby(s->srv_root, taskMAX, CRITERIA_ARG, c, NULL);
1.10 misho 114:
115: /* free buffer */
116: AIT_FREE_VAL(&c->cli_buf);
117:
1.14 misho 118: array_Del(s->srv_clients, c->cli_id, 0);
1.10 misho 119: if (c)
1.14 misho 120: e_free(c);
1.13 misho 121: }
122:
123:
124: static inline int
1.14 misho 125: _check4freeslot(rpc_srv_t * __restrict srv, sockaddr_t * __restrict sa)
1.13 misho 126: {
127: rpc_cli_t *c = NULL;
128: register int i;
129:
130: /* check free slots for connect */
1.14 misho 131: for (i = 0; i < array_Size(srv->srv_clients) &&
132: (c = array(srv->srv_clients, i, rpc_cli_t*)); i++)
1.13 misho 133: /* check for duplicates */
1.14 misho 134: if (sa && !e_addrcmp(&c->cli_sa, sa, 42))
1.13 misho 135: break;
1.14 misho 136: if (i >= array_Size(srv->srv_clients))
1.13 misho 137: return -1; /* no more free slots! */
138:
139: return i;
140: }
141:
142: static rpc_cli_t *
1.14 misho 143: _allocClient(rpc_srv_t * __restrict srv, sockaddr_t * __restrict sa)
1.13 misho 144: {
145: rpc_cli_t *c = NULL;
146: int n;
147:
1.25 misho 148: if (srv->srv_proto != SOCK_EXT)
149: n = _check4freeslot(srv, sa);
150: else
151: n = 0;
1.13 misho 152: if (n == -1)
153: return NULL;
154: else
1.14 misho 155: c = array(srv->srv_clients, n, rpc_cli_t*);
1.13 misho 156:
157: if (!c) {
1.14 misho 158: c = e_malloc(sizeof(rpc_cli_t));
1.13 misho 159: if (!c) {
160: LOGERR;
161: srv->srv_kill = 1;
162: return NULL;
163: } else {
164: memset(c, 0, sizeof(rpc_cli_t));
1.14 misho 165: array_Set(srv->srv_clients, n, c);
1.13 misho 166: c->cli_id = n;
167: c->cli_parent = srv;
168: }
169:
170: /* alloc empty buffer */
1.14 misho 171: AIT_SET_BUFSIZ(&c->cli_buf, 0, srv->srv_netbuf);
1.31 misho 172: if (!AIT_GET_BUF(&c->cli_buf)) {
173: array_Del(srv->srv_clients, n, 0);
174: e_free(c);
175: c = NULL;
176: }
1.13 misho 177: }
178:
179: return c;
180: }
181:
182:
183: static void *
184: freeClient(sched_task_t *task)
185: {
186: rpc_freeCli(TASK_ARG(task));
187:
1.27 misho 188: taskExit(task, NULL);
1.13 misho 189: }
190:
191: static void *
192: closeClient(sched_task_t *task)
193: {
194: int sock = ((rpc_cli_t*) TASK_ARG(task))->cli_sock;
195:
196: rpc_freeCli(TASK_ARG(task));
197:
198: /* close client socket */
199: shutdown(sock, SHUT_RDWR);
200: close(sock);
1.27 misho 201: taskExit(task, NULL);
1.10 misho 202: }
1.7 misho 203:
204: static void *
205: txPacket(sched_task_t *task)
206: {
207: rpc_cli_t *c = TASK_ARG(task);
208: rpc_srv_t *s = c->cli_parent;
209: rpc_func_t *f = NULL;
1.18 misho 210: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1.7 misho 211: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
1.27 misho 212: int ret, wlen = sizeof(struct tagRPCCall);
1.21 misho 213: #ifdef TCP_SESSION_TIMEOUT
214: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
215:
216: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
217: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
218: TASK_ARG(task), ts, TASK_ARG(task), 0);
219: #endif
1.7 misho 220:
221: if (rpc->call_argc) {
1.10 misho 222: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
1.7 misho 223: if (!f) {
1.10 misho 224: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
1.18 misho 225:
1.7 misho 226: rpc->call_argc ^= rpc->call_argc;
1.27 misho 227: RPC_SET_RETURN(rpc, -1);
228: RPC_SET_ERRNO(rpc, rpc_Errno);
229: } else if (rpc_pktFreeSpace(c) > s->srv_netbuf) {
230: rpc_SetErr(EMSGSIZE, "Message too long");
231:
232: rpc->call_argc ^= rpc->call_argc;
233: RPC_SET_RETURN(rpc, -1);
234: RPC_SET_ERRNO(rpc, rpc_Errno);
1.7 misho 235: } else {
1.25 misho 236: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
1.7 misho 237: /* Go Encapsulate variables */
1.18 misho 238: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
239: RPC_RETVARS(c));
1.7 misho 240: if (ret == -1) {
241: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
1.19 misho 242:
1.7 misho 243: rpc->call_argc ^= rpc->call_argc;
1.27 misho 244: RPC_SET_RETURN(rpc, -1);
245: RPC_SET_ERRNO(rpc, rpc_Errno);
1.7 misho 246: } else
247: wlen += ret;
248: }
249: }
250:
1.27 misho 251: /* Free return values */
252: ait_freeVars(&c->cli_vars);
253:
1.18 misho 254: rpc->call_len = htonl(wlen);
1.25 misho 255: rpc->call_io = RPC_ACK;
1.8 misho 256:
1.15 misho 257: #if 0
1.7 misho 258: /* calculate CRC */
259: rpc->call_crc ^= rpc->call_crc;
1.8 misho 260: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
1.15 misho 261: #endif
1.7 misho 262:
263: /* send reply */
1.27 misho 264: ret = send(TASK_FD(task), buf, wlen, MSG_NOSIGNAL);
265: if (ret == -1) {
266: /* close connection */
267: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
268: TASK_ARG(task), 0, NULL, 0);
1.10 misho 269: }
1.7 misho 270:
1.27 misho 271: taskExit(task, NULL);
1.7 misho 272: }
273:
274: static void *
275: execCall(sched_task_t *task)
276: {
277: rpc_cli_t *c = TASK_ARG(task);
278: rpc_srv_t *s = c->cli_parent;
279: rpc_func_t *f = NULL;
280: array_t *arr = NULL;
1.18 misho 281: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1.7 misho 282: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
1.25 misho 283: int argc = rpc->call_argc;
1.7 misho 284:
285: /* Go decapsulate variables ... */
1.8 misho 286: if (argc) {
1.14 misho 287: arr = ait_buffer2vars(buf + sizeof(struct tagRPCCall),
1.18 misho 288: AIT_LEN(&c->cli_buf) - sizeof(struct tagRPCCall), argc, 42);
1.7 misho 289: if (!arr) {
1.14 misho 290: rpc_SetErr(ERPCMISMATCH, "#%d - %s", elwix_GetErrno(), elwix_GetError());
1.18 misho 291:
1.7 misho 292: rpc->call_argc ^= rpc->call_argc;
1.27 misho 293: RPC_SET_RETURN(rpc, -1);
294: RPC_SET_ERRNO(rpc, rpc_Errno);
295: taskExit(task, NULL);
1.7 misho 296: }
1.10 misho 297: } else
298: arr = NULL;
1.7 misho 299:
1.10 misho 300: if (!(f = rpc_srv_getCall(s, ntohs(rpc->call_tag)))) {
1.7 misho 301: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
1.18 misho 302:
1.7 misho 303: rpc->call_argc ^= rpc->call_argc;
1.27 misho 304: RPC_SET_RETURN(rpc, -1);
305: RPC_SET_ERRNO(rpc, rpc_Errno);
1.7 misho 306: } else {
1.8 misho 307: /* if client doesn't want reply */
1.27 misho 308: RPC_SET_RETURN(rpc, rpc_srv_execCall(c, rpc, f->func_name, arr));
1.7 misho 309: if (rpc->call_rep.ret == htonl(-1)) {
1.20 misho 310: if (!rpc->call_rep.eno) {
311: LOGERR;
1.27 misho 312: RPC_SET_ERRNO(rpc, rpc_Errno);
1.20 misho 313: }
1.7 misho 314: rpc->call_argc ^= rpc->call_argc;
1.27 misho 315: ait_freeVars(&c->cli_vars);
1.7 misho 316: } else {
317: rpc->call_rep.eno ^= rpc->call_rep.eno;
1.27 misho 318: rpc->call_argc ^= rpc->call_argc;
319: if (TASK_VAL(task)) {
1.8 misho 320: /* without reply */
1.14 misho 321: ait_freeVars(&c->cli_vars);
1.31 misho 322: } else if (rpc->call_io & RPC_REQ) {
1.10 misho 323: /* reply */
1.25 misho 324: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
1.10 misho 325: }
1.7 misho 326: }
327: }
328:
1.14 misho 329: array_Destroy(&arr);
1.27 misho 330: taskExit(task, NULL);
1.7 misho 331: }
332:
333: static void *
334: rxPacket(sched_task_t *task)
335: {
336: rpc_cli_t *c = TASK_ARG(task);
337: rpc_srv_t *s = c->cli_parent;
1.31 misho 338: int len, noreply = 0, rlen;
1.15 misho 339: #if 0
340: u_short crc;
341: #endif
1.10 misho 342: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1.29 misho 343: struct tagRPCCall b, *rpc = (struct tagRPCCall*) buf;
1.21 misho 344: #ifdef TCP_SESSION_TIMEOUT
345: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
346:
347: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
348: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
349: TASK_ARG(task), ts, TASK_ARG(task), 0);
350: #endif
1.7 misho 351:
1.27 misho 352: /* prepare rx */
1.29 misho 353: len = recv(TASK_FD(task), &b, sizeof b, MSG_PEEK);
1.31 misho 354: if (len < 1) {
355: /* close connection */
356: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
357: TASK_ARG(task), 0, NULL, 0);
358: taskExit(task, NULL);
359: } else if (len == sizeof b)
1.29 misho 360: rlen = ntohl(b.call_len);
1.31 misho 361: else
362: goto end;
1.27 misho 363:
364: rlen = recv(TASK_FD(task), buf, rlen, 0);
365: if (rlen == -1) {
1.10 misho 366: /* close connection */
1.13 misho 367: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
368: TASK_ARG(task), 0, NULL, 0);
1.27 misho 369: taskExit(task, NULL);
1.18 misho 370: }
1.27 misho 371: if (rlen < sizeof(struct tagRPCCall)) {
372: rpc_SetErr(ERPCMISMATCH, "Short RPC packet");
1.18 misho 373:
1.27 misho 374: rpc->call_argc ^= rpc->call_argc;
375: RPC_SET_RETURN(rpc, -1);
376: RPC_SET_ERRNO(rpc, rpc_Errno);
377: goto err;
378: } else
379: len = ntohl(rpc->call_len);
380: if (rlen < len || len > AIT_LEN(&c->cli_buf)) {
381: rpc_SetErr(ERPCMISMATCH, "Short RPC packet");
382:
383: rpc->call_argc ^= rpc->call_argc;
384: RPC_SET_RETURN(rpc, -1);
385: RPC_SET_ERRNO(rpc, rpc_Errno);
386: goto err;
1.18 misho 387: }
1.8 misho 388:
1.25 misho 389: /* skip loop packet */
390: if (rpc->call_io & RPC_ACK) {
391: schedReadSelf(task);
1.27 misho 392: taskExit(task, NULL);
1.25 misho 393: }
394:
1.15 misho 395: #if 0
1.18 misho 396: /* check integrity of packet */
397: crc = ntohs(rpc->call_crc);
398: rpc->call_crc ^= rpc->call_crc;
399: if (crc != crcFletcher16((u_short*) rpc, len / 2)) {
400: rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet");
1.27 misho 401:
402: rpc->call_argc ^= rpc->call_argc;
403: RPC_SET_RETURN(rpc, -1);
404: RPC_SET_ERRNO(rpc, rpc_Errno);
405: goto err;
1.18 misho 406: }
1.15 misho 407: #endif
1.7 misho 408:
1.18 misho 409: /* check RPC packet session info */
410: if (rpc_chkPktSession(&rpc->call_session, &s->srv_session)) {
411: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
1.7 misho 412:
1.18 misho 413: rpc->call_argc ^= rpc->call_argc;
1.27 misho 414: RPC_SET_RETURN(rpc, -1);
415: RPC_SET_ERRNO(rpc, rpc_Errno);
416: goto err;
1.18 misho 417: }
1.7 misho 418:
1.27 misho 419: noreply = RPC_CHK_NOREPLY(rpc);
420:
421: /* execute RPC call */
422: schedEvent(TASK_ROOT(task), execCall, TASK_ARG(task), (int) noreply, rpc, len);
423: err:
1.18 misho 424: /* send RPC reply */
1.31 misho 425: if (!noreply && (rpc->call_io & RPC_REQ))
1.18 misho 426: schedWrite(TASK_ROOT(task), cbProto[s->srv_proto][CB_TXPACKET],
427: TASK_ARG(task), TASK_FD(task), rpc, len);
1.31 misho 428: end:
1.7 misho 429: /* lets get next packet */
1.18 misho 430: schedReadSelf(task);
1.27 misho 431: taskExit(task, NULL);
1.7 misho 432: }
433:
1.1 misho 434: static void *
1.10 misho 435: acceptClients(sched_task_t *task)
1.1 misho 436: {
1.10 misho 437: rpc_srv_t *srv = TASK_ARG(task);
438: rpc_cli_t *c = NULL;
1.29 misho 439: socklen_t salen = E_SOCKADDR_MAX;
1.21 misho 440: int sock;
441: #ifdef TCP_SESSION_TIMEOUT
442: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
443: #endif
1.7 misho 444:
1.13 misho 445: c = _allocClient(srv, NULL);
1.21 misho 446: if (!c) {
447: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
448: if ((sock = accept(TASK_FD(task), NULL, NULL)) != -1) {
449: shutdown(sock, SHUT_RDWR);
450: close(sock);
451: }
1.10 misho 452: goto end;
1.21 misho 453: }
1.10 misho 454:
455: /* accept client */
456: c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen);
457: if (c->cli_sock == -1) {
458: LOGERR;
459: AIT_FREE_VAL(&c->cli_buf);
1.14 misho 460: array_Del(srv->srv_clients, c->cli_id, 42);
1.10 misho 461: goto end;
1.30 misho 462: } else {
1.10 misho 463: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
1.30 misho 464: fcntl(c->cli_sock, F_SETFD, FD_CLOEXEC);
465: }
1.1 misho 466:
1.21 misho 467: #ifdef TCP_SESSION_TIMEOUT
468: /* armed timer for close stateless connection */
469: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
470: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT], c,
471: ts, c, 0);
472: #endif
1.13 misho 473: schedRead(TASK_ROOT(task), cbProto[srv->srv_proto][CB_RXPACKET], c,
474: c->cli_sock, NULL, 0);
1.10 misho 475: end:
476: schedReadSelf(task);
1.27 misho 477: taskExit(task, NULL);
1.10 misho 478: }
1.5 misho 479:
1.7 misho 480:
1.10 misho 481: static void *
1.13 misho 482: txUDPPacket(sched_task_t *task)
1.10 misho 483: {
484: rpc_cli_t *c = TASK_ARG(task);
485: rpc_srv_t *s = c->cli_parent;
1.13 misho 486: rpc_func_t *f = NULL;
1.18 misho 487: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1.13 misho 488: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
1.27 misho 489: int ret, wlen = sizeof(struct tagRPCCall);
1.13 misho 490: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
491:
492: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
493: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
494: TASK_ARG(task), ts, TASK_ARG(task), 0);
495:
496: if (rpc->call_argc) {
497: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
498: if (!f) {
499: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
1.27 misho 500:
1.13 misho 501: rpc->call_argc ^= rpc->call_argc;
1.27 misho 502: RPC_SET_RETURN(rpc, -1);
503: RPC_SET_ERRNO(rpc, rpc_Errno);
504: } else if (rpc_pktFreeSpace(c) > s->srv_netbuf) {
505: rpc_SetErr(EMSGSIZE, "Message too long");
506:
507: rpc->call_argc ^= rpc->call_argc;
508: RPC_SET_RETURN(rpc, -1);
509: RPC_SET_ERRNO(rpc, rpc_Errno);
1.13 misho 510: } else {
1.25 misho 511: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
1.13 misho 512: /* Go Encapsulate variables */
1.18 misho 513: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
514: RPC_RETVARS(c));
1.13 misho 515: if (ret == -1) {
516: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
1.27 misho 517:
1.13 misho 518: rpc->call_argc ^= rpc->call_argc;
1.27 misho 519: RPC_SET_RETURN(rpc, -1);
520: RPC_SET_ERRNO(rpc, rpc_Errno);
1.13 misho 521: } else
522: wlen += ret;
523: }
524: }
1.7 misho 525:
1.27 misho 526: /* Free return values */
527: ait_freeVars(&c->cli_vars);
528:
1.18 misho 529: rpc->call_len = htonl(wlen);
1.25 misho 530: rpc->call_io = RPC_ACK;
1.7 misho 531:
1.13 misho 532: /* calculate CRC */
533: rpc->call_crc ^= rpc->call_crc;
534: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
535:
536: /* send reply */
1.27 misho 537: ret = sendto(TASK_FD(task), buf, wlen, MSG_NOSIGNAL,
1.29 misho 538: &c->cli_sa.sa, e_addrlen(&c->cli_sa));
1.27 misho 539: if (ret == -1) {
540: /* close connection */
541: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
542: TASK_ARG(task), 0, NULL, 0);
1.13 misho 543: }
544:
1.27 misho 545: taskExit(task, NULL);
1.13 misho 546: }
547:
548: static void *
549: rxUDPPacket(sched_task_t *task)
550: {
551: rpc_srv_t *srv = TASK_ARG(task);
552: rpc_cli_t *c = NULL;
1.27 misho 553: int len, noreply = 0, rlen;
1.22 misho 554: u_short crc;
1.27 misho 555: struct tagRPCCall *rpc;
1.14 misho 556: sockaddr_t sa;
1.29 misho 557: socklen_t salen = E_SOCKADDR_MAX;
1.13 misho 558: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
1.27 misho 559: ait_val_t b = AIT_VAL_INIT;
1.13 misho 560:
561: /* receive connect packet */
1.27 misho 562: AIT_SET_BUF(&b, NULL, srv->srv_netbuf);
1.29 misho 563: #ifndef __linux__
564: sa.ss.ss_len = salen;
565: #endif
1.27 misho 566: rlen = recvfrom(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b), 0, &sa.sa, &salen);
567: rpc = (struct tagRPCCall*) AIT_GET_BUF(&b);
1.32 misho 568: if (!rpc || rlen < sizeof(struct tagRPCCall))
1.27 misho 569: goto end;
570: else
571: len = ntohl(rpc->call_len);
572: if (rlen < len || len > srv->srv_netbuf)
573: goto end;
574:
575: /* skip loop packet */
576: if (rpc->call_io & RPC_ACK)
577: goto end;
578:
579: /* check integrity of packet */
580: crc = ntohs(rpc->call_crc);
581: rpc->call_crc ^= rpc->call_crc;
1.31 misho 582: if (crc != crcFletcher16((u_short*) AIT_GET_BUF(&b), len / 2))
1.27 misho 583: goto end;
584:
585: /* check RPC packet session info */
586: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session))
1.13 misho 587: goto end;
588:
589: c = _allocClient(srv, &sa);
1.22 misho 590: if (!c) {
1.31 misho 591: EVERBOSE(1, "RPC client quota exceeded!");
1.22 misho 592: usleep(2000); /* blocked client delay */
1.13 misho 593: goto end;
1.22 misho 594: } else {
1.27 misho 595: memcpy(AIT_GET_BUF(&c->cli_buf), AIT_GET_BUF(&b), len);
1.22 misho 596: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
597:
1.13 misho 598: c->cli_sock = TASK_FD(task);
599: memcpy(&c->cli_sa, &sa, sizeof c->cli_sa);
1.22 misho 600:
1.13 misho 601: /* armed timer for close stateless connection */
602: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
603: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
604: c, ts, c, 0);
605: }
606:
1.24 misho 607: noreply = RPC_CHK_NOREPLY(rpc);
608:
1.27 misho 609: /* execute RPC call */
610: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
1.24 misho 611:
612: /* send RPC reply */
1.31 misho 613: if (!noreply && (rpc->call_io & RPC_REQ))
1.24 misho 614: schedWrite(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
615: c, TASK_FD(task), rpc, len);
616: end:
1.27 misho 617: AIT_FREE_VAL(&b);
1.24 misho 618: schedReadSelf(task);
1.27 misho 619: taskExit(task, NULL);
1.24 misho 620: }
621:
622:
623: static void *
1.26 misho 624: txRAWPacket(sched_task_t *task)
625: {
626: rpc_cli_t *c = TASK_ARG(task);
627: rpc_srv_t *s = c->cli_parent;
628: rpc_func_t *f = NULL;
629: u_char *buf = AIT_GET_BUF(&c->cli_buf);
630: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
1.27 misho 631: int ret, wlen = sizeof(struct tagRPCCall);
1.26 misho 632: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
633:
634: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
635: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
636: TASK_ARG(task), ts, TASK_ARG(task), 0);
637:
638: if (rpc->call_argc) {
639: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
640: if (!f) {
641: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
1.27 misho 642:
1.26 misho 643: rpc->call_argc ^= rpc->call_argc;
1.27 misho 644: RPC_SET_RETURN(rpc, -1);
645: RPC_SET_ERRNO(rpc, rpc_Errno);
646: } else if (rpc_pktFreeSpace(c) > s->srv_netbuf) {
647: rpc_SetErr(EMSGSIZE, "Message too long");
648:
649: rpc->call_argc ^= rpc->call_argc;
650: RPC_SET_RETURN(rpc, -1);
651: RPC_SET_ERRNO(rpc, rpc_Errno);
1.26 misho 652: } else {
653: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
654: /* Go Encapsulate variables */
655: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
656: RPC_RETVARS(c));
657: if (ret == -1) {
658: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
1.27 misho 659:
1.26 misho 660: rpc->call_argc ^= rpc->call_argc;
1.27 misho 661: RPC_SET_RETURN(rpc, -1);
662: RPC_SET_ERRNO(rpc, rpc_Errno);
1.26 misho 663: } else
664: wlen += ret;
665: }
666: }
667:
1.27 misho 668: /* Free return values */
669: ait_freeVars(&c->cli_vars);
670:
1.26 misho 671: rpc->call_len = htonl(wlen);
672: rpc->call_io = RPC_ACK;
673:
674: /* calculate CRC */
675: rpc->call_crc ^= rpc->call_crc;
676: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
677:
678: /* send reply */
1.27 misho 679: ret = sendto(TASK_FD(task), buf, wlen, MSG_NOSIGNAL,
1.29 misho 680: &c->cli_sa.sa, e_addrlen(&c->cli_sa));
1.27 misho 681: if (ret == -1) {
682: /* close connection */
683: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
684: TASK_ARG(task), 0, NULL, 0);
1.26 misho 685: }
686:
1.27 misho 687: taskExit(task, NULL);
1.26 misho 688: }
689:
690: static void *
691: rxRAWPacket(sched_task_t *task)
692: {
693: rpc_srv_t *srv = TASK_ARG(task);
694: rpc_cli_t *c = NULL;
1.27 misho 695: int len, noreply = 0, rlen;
1.26 misho 696: u_short crc;
697: struct tagRPCCall *rpc;
698: sockaddr_t sa;
1.29 misho 699: socklen_t salen = E_SOCKADDR_MAX;
1.26 misho 700: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
1.27 misho 701: ait_val_t b = AIT_VAL_INIT;
1.26 misho 702:
703: /* receive connect packet */
1.27 misho 704: AIT_SET_BUF(&b, NULL, srv->srv_netbuf);
1.29 misho 705: #ifndef __linux__
706: sa.ss.ss_len = salen;
707: #endif
1.27 misho 708: rlen = recvfrom(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b), 0, &sa.sa, &salen);
709: if (sa.sa.sa_family == AF_INET) {
710: struct ip *h;
711: h = (struct ip*) AIT_GET_BUF(&b);
1.32 misho 712: if (!h || rlen < ntohs(h->ip_len) || h->ip_p != IPPROTO_ERPC)
1.27 misho 713: goto end;
714: else {
715: rlen -= sizeof(struct ip);
716: rpc = (struct tagRPCCall*) (h + 1);
717: }
718: } else {
1.29 misho 719: #ifdef IPV6_REMOVE_HEADER
1.27 misho 720: struct ip6_hdr *h;
721: h = (struct ip6_hdr*) AIT_GET_BUF(&b);
1.32 misho 722: if (!h || rlen < ntohs(h->ip6_plen) || h->ip6_nxt != IPPROTO_ERPC)
1.27 misho 723: goto end;
724: else {
725: rlen -= sizeof(struct ip6_hdr);
726: rpc = (struct tagRPCCall*) (h + 1);
727: }
1.29 misho 728: #else
729: rpc = (struct tagRPCCall*) AIT_GET_BUF(&b);
730: #endif
1.27 misho 731: }
1.32 misho 732: if (!rpc || rlen < sizeof(struct tagRPCCall))
1.27 misho 733: goto end;
734: else
735: len = ntohl(rpc->call_len);
736: if (rlen < len || len > srv->srv_netbuf)
737: goto end;
738:
739: /* skip loop packet */
740: if (rpc->call_io & RPC_ACK)
741: goto end;
742:
743: /* check integrity of packet */
744: crc = ntohs(rpc->call_crc);
745: rpc->call_crc ^= rpc->call_crc;
1.31 misho 746: if (crc != crcFletcher16((u_short*) AIT_GET_BUF(&b), len / 2))
1.27 misho 747: goto end;
748:
749: /* check RPC packet session info */
750: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session))
1.26 misho 751: goto end;
752:
753: c = _allocClient(srv, &sa);
754: if (!c) {
755: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
756: usleep(2000); /* blocked client delay */
757: goto end;
758: } else {
1.27 misho 759: memcpy(AIT_GET_BUF(&c->cli_buf), rpc, len);
760: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
1.26 misho 761:
762: c->cli_sock = TASK_FD(task);
763: memcpy(&c->cli_sa, &sa, sizeof c->cli_sa);
764:
765: /* armed timer for close stateless connection */
766: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
767: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
768: c, ts, c, 0);
769: }
770:
771: noreply = RPC_CHK_NOREPLY(rpc);
772:
1.27 misho 773: /* execute RPC call */
774: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
1.26 misho 775:
776: /* send RPC reply */
1.31 misho 777: if (!noreply && (rpc->call_io & RPC_REQ))
1.26 misho 778: schedWrite(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
779: c, TASK_FD(task), rpc, len);
780: end:
1.27 misho 781: AIT_FREE_VAL(&b);
1.26 misho 782: schedReadSelf(task);
1.27 misho 783: taskExit(task, NULL);
1.26 misho 784: }
785:
786:
787: static void *
1.24 misho 788: txBPFPacket(sched_task_t *task)
789: {
1.29 misho 790: #ifndef __linux__
1.24 misho 791: rpc_cli_t *c = TASK_ARG(task);
792: rpc_srv_t *s = c->cli_parent;
793: rpc_func_t *f = NULL;
794: u_char *buf = AIT_GET_BUF(&c->cli_buf);
795: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
1.27 misho 796: int ret, wlen = sizeof(struct tagRPCCall);
1.24 misho 797: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
798: struct ether_header *eh;
799: ait_val_t b = AIT_VAL_INIT;
800:
801: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
802: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
803: TASK_ARG(task), ts, TASK_ARG(task), 0);
804:
805: if (rpc->call_argc) {
806: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
807: if (!f) {
808: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
1.27 misho 809:
1.24 misho 810: rpc->call_argc ^= rpc->call_argc;
1.27 misho 811: RPC_SET_RETURN(rpc, -1);
812: RPC_SET_ERRNO(rpc, rpc_Errno);
813: } else if (rpc_pktFreeSpace(c) > s->srv_netbuf) {
814: rpc_SetErr(EMSGSIZE, "Message too long");
815:
816: rpc->call_argc ^= rpc->call_argc;
817: RPC_SET_RETURN(rpc, -1);
818: RPC_SET_ERRNO(rpc, rpc_Errno);
1.24 misho 819: } else {
1.25 misho 820: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
1.24 misho 821: /* Go Encapsulate variables */
822: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
823: RPC_RETVARS(c));
824: if (ret == -1) {
825: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
1.27 misho 826:
1.24 misho 827: rpc->call_argc ^= rpc->call_argc;
1.27 misho 828: RPC_SET_RETURN(rpc, -1);
829: RPC_SET_ERRNO(rpc, rpc_Errno);
1.24 misho 830: } else
831: wlen += ret;
832: }
833: }
834:
1.27 misho 835: /* Free return values */
836: ait_freeVars(&RPC_RETVARS(c));
837:
1.24 misho 838: rpc->call_len = htonl(wlen);
1.25 misho 839: rpc->call_io = RPC_ACK;
1.24 misho 840:
841: /* calculate CRC */
842: rpc->call_crc ^= rpc->call_crc;
843: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
844:
845: /* send reply */
1.27 misho 846: AIT_SET_BUF(&b, NULL, wlen + ETHER_HDR_LEN);
1.24 misho 847: eh = (struct ether_header*) AIT_GET_BUF(&b);
848: memcpy(eh->ether_dhost, LLADDR(&c->cli_sa.sdl), ETHER_ADDR_LEN);
849: eh->ether_type = htons(RPC_DEFPORT);
1.27 misho 850: memcpy(eh + 1, buf, wlen);
1.24 misho 851:
852: ret = write(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b));
853: AIT_FREE_VAL(&b);
854: if (ret == -1) {
855: /* close connection */
856: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
857: TASK_ARG(task), 0, NULL, 0);
1.22 misho 858: }
1.29 misho 859: #else
860: rpc_SetErr(ENOTSUP, "Feature isn't supported on Linux!");
861: #endif
1.13 misho 862:
1.27 misho 863: taskExit(task, NULL);
1.24 misho 864: }
865:
866: static void *
867: rxBPFPacket(sched_task_t *task)
868: {
1.29 misho 869: #ifndef __linux__
1.24 misho 870: rpc_srv_t *srv = TASK_ARG(task);
871: rpc_cli_t *c = NULL;
872: int len, rlen, noreply;
873: u_short crc;
874: struct tagRPCCall *rpc;
875: sockaddr_t sa;
876: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
877: struct bpf_hdr *h;
878: struct ether_header *eh;
879: ait_val_t b = AIT_VAL_INIT;
880:
881: /* receive connect packet */
882: AIT_SET_BUF(&b, NULL, srv->srv_netbuf);
883: rlen = read(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b));
884: h = (struct bpf_hdr*) AIT_GET_BUF(&b);
885: rlen -= h->bh_hdrlen;
886: if (rlen < h->bh_datalen || h->bh_caplen != h->bh_datalen ||
1.27 misho 887: rlen < ETHER_HDR_LEN + sizeof(struct tagRPCCall))
1.24 misho 888: goto end;
1.27 misho 889: else {
1.24 misho 890: rlen = h->bh_caplen;
891: eh = (struct ether_header*) (AIT_GET_BUF(&b) + h->bh_hdrlen);
892: rlen -= ETHER_HDR_LEN;
893: rpc = (struct tagRPCCall*) (eh + 1);
1.25 misho 894:
1.24 misho 895: if (eh->ether_type != ntohs(RPC_DEFPORT))
896: goto end;
897: else
898: e_getlinkbymac((const ether_addr_t*) eh->ether_shost, &sa);
899: }
1.27 misho 900: if (rlen < sizeof(struct tagRPCCall))
901: goto end;
902: else
903: len = ntohl(rpc->call_len);
904: if (rlen < len || len > srv->srv_netbuf)
905: goto end;
906:
907: #ifdef CHECK_ETHACK
908: /* skip loop packet */
909: if (rpc->call_io & RPC_ACK)
910: goto end;
911: #endif
912:
913: /* check integrity of packet */
914: crc = ntohs(rpc->call_crc);
915: rpc->call_crc ^= rpc->call_crc;
916: if (crc != crcFletcher16((u_short*) rpc, len / 2))
917: goto end;
918:
919: /* check RPC packet session info */
920: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session))
921: goto end;
1.24 misho 922:
923: c = _allocClient(srv, &sa);
924: if (!c) {
925: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
926: usleep(2000); /* blocked client delay */
927: goto end;
928: } else {
1.27 misho 929: memcpy(AIT_GET_BUF(&c->cli_buf), rpc, len);
1.24 misho 930: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
931:
932: c->cli_sock = TASK_FD(task);
933: memcpy(&c->cli_sa, &sa, sizeof c->cli_sa);
934:
935: /* armed timer for close stateless connection */
936: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
937: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
938: c, ts, c, 0);
939: }
940:
1.22 misho 941: noreply = RPC_CHK_NOREPLY(rpc);
1.18 misho 942:
1.27 misho 943: /* execute RPC call */
944: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
1.13 misho 945:
1.22 misho 946: /* send RPC reply */
1.31 misho 947: if (!noreply && (rpc->call_io & RPC_REQ))
1.24 misho 948: schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
1.22 misho 949: c, TASK_FD(task), rpc, len);
1.13 misho 950: end:
1.24 misho 951: AIT_FREE_VAL(&b);
1.13 misho 952: schedReadSelf(task);
1.29 misho 953: #else
954: rpc_SetErr(ENOTSUP, "Feature isn't supported on Linux!");
955: #endif
956:
1.27 misho 957: taskExit(task, NULL);
1.13 misho 958: }
959:
1.25 misho 960:
961: static void *
962: txEXTPacket(sched_task_t *task)
963: {
964: rpc_cli_t *c = TASK_ARG(task);
965: rpc_srv_t *s = c->cli_parent;
966: rpc_func_t *f = NULL;
967: u_char *buf = AIT_GET_BUF(&c->cli_buf);
968: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
1.27 misho 969: int ret, wlen = sizeof(struct tagRPCCall);
1.25 misho 970: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
971:
972: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
973: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
974: TASK_ARG(task), ts, TASK_ARG(task), 0);
975:
976: if (rpc->call_argc) {
977: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
978: if (!f) {
979: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
1.27 misho 980:
981: rpc->call_argc ^= rpc->call_argc;
982: RPC_SET_RETURN(rpc, -1);
983: RPC_SET_ERRNO(rpc, rpc_Errno);
984: } else if (rpc_pktFreeSpace(c) > s->srv_netbuf) {
985: rpc_SetErr(EMSGSIZE, "Message too long");
986:
1.25 misho 987: rpc->call_argc ^= rpc->call_argc;
1.27 misho 988: RPC_SET_RETURN(rpc, -1);
989: RPC_SET_ERRNO(rpc, rpc_Errno);
1.25 misho 990: } else {
991: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
992: /* Go Encapsulate variables */
993: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
994: RPC_RETVARS(c));
995: if (ret == -1) {
996: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
1.27 misho 997:
1.25 misho 998: rpc->call_argc ^= rpc->call_argc;
1.27 misho 999: RPC_SET_RETURN(rpc, -1);
1000: RPC_SET_ERRNO(rpc, rpc_Errno);
1.25 misho 1001: } else
1002: wlen += ret;
1003: }
1004: }
1005:
1.27 misho 1006: /* Free return values */
1007: ait_freeVars(&RPC_RETVARS(c));
1008:
1.25 misho 1009: rpc->call_len = htonl(wlen);
1010: rpc->call_io = RPC_ACK;
1011:
1012: /* send reply */
1.27 misho 1013: ret = write(TASK_FD(task), buf, wlen);
1.25 misho 1014: if (ret == -1) {
1015: /* close connection */
1016: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
1017: TASK_ARG(task), 0, NULL, 0);
1018: }
1019:
1.27 misho 1020: taskExit(task, NULL);
1.25 misho 1021: }
1022:
1023: static void *
1024: rxEXTPacket(sched_task_t *task)
1025: {
1026: rpc_srv_t *srv = TASK_ARG(task);
1027: rpc_cli_t *c = NULL;
1.31 misho 1028: int len, noreply = 0, rlen;
1.25 misho 1029: struct tagRPCCall *rpc;
1030: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
1.27 misho 1031: sockaddr_t sa;
1.25 misho 1032: ait_val_t b = AIT_VAL_INIT;
1033:
1034: memset(&sa, 0, sizeof sa);
1035: /* receive connect packet */
1036: AIT_SET_BUF(&b, NULL, srv->srv_netbuf);
1037: rlen = read(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b));
1.27 misho 1038: rpc = (struct tagRPCCall*) AIT_GET_BUF(&b);
1.32 misho 1039: if (!rpc || rlen < sizeof(struct tagRPCCall))
1.27 misho 1040: goto end;
1041: else
1042: len = ntohl(rpc->call_len);
1043: if (rlen < len || len > srv->srv_netbuf)
1044: goto end;
1045:
1046: /* skip loop packet */
1047: if (rpc->call_io & RPC_ACK)
1.25 misho 1048: goto end;
1049:
1.27 misho 1050: /* check RPC packet session info */
1051: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session))
1052: goto end;
1.25 misho 1053:
1054: c = _allocClient(srv, &sa);
1055: if (!c) {
1056: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
1057: usleep(2000); /* blocked client delay */
1058: goto end;
1059: } else {
1.27 misho 1060: memcpy(AIT_GET_BUF(&c->cli_buf), AIT_GET_BUF(&b), len);
1.25 misho 1061: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
1062:
1063: c->cli_sock = TASK_FD(task);
1064:
1065: /* armed timer for close stateless connection */
1066: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
1067: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
1068: c, ts, c, 0);
1069: }
1070:
1071: noreply = RPC_CHK_NOREPLY(rpc);
1072:
1.27 misho 1073: /* execute RPC call */
1074: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
1.25 misho 1075:
1076: /* send RPC reply */
1.31 misho 1077: if (!noreply && (rpc->call_io & RPC_REQ))
1.25 misho 1078: schedWrite(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
1079: c, TASK_FD(task), rpc, len);
1080: end:
1081: AIT_FREE_VAL(&b);
1082: schedReadSelf(task);
1.27 misho 1083: taskExit(task, NULL);
1.25 misho 1084: }
1085:
1.13 misho 1086: /* ------------------------------------------------------ */
1087:
1.16 misho 1088: void
1.13 misho 1089: rpc_freeBLOBCli(rpc_cli_t * __restrict c)
1090: {
1091: rpc_srv_t *s = c->cli_parent;
1092:
1093: schedCancelby(s->srv_blob.root, taskMAX, CRITERIA_ARG, c, NULL);
1.10 misho 1094:
1095: /* free buffer */
1096: AIT_FREE_VAL(&c->cli_buf);
1097:
1.14 misho 1098: array_Del(s->srv_blob.clients, c->cli_id, 0);
1.10 misho 1099: if (c)
1.14 misho 1100: e_free(c);
1.13 misho 1101: }
1102:
1103:
1104: static void *
1105: closeBLOBClient(sched_task_t *task)
1106: {
1107: int sock = ((rpc_cli_t*) TASK_ARG(task))->cli_sock;
1108:
1109: rpc_freeBLOBCli(TASK_ARG(task));
1110:
1111: /* close client socket */
1112: shutdown(sock, SHUT_RDWR);
1113: close(sock);
1.27 misho 1114: taskExit(task, NULL);
1.7 misho 1115: }
1116:
1117: static void *
1118: txBLOB(sched_task_t *task)
1119: {
1.10 misho 1120: rpc_cli_t *c = TASK_ARG(task);
1121: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1.7 misho 1122: int wlen = sizeof(struct tagBLOBHdr);
1123:
1124: /* send reply */
1.10 misho 1125: wlen = send(TASK_FD(task), buf, wlen, MSG_NOSIGNAL);
1126: if (wlen == -1 || wlen != sizeof(struct tagBLOBHdr)) {
1127: /* close blob connection */
1128: schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0);
1129: }
1.7 misho 1130:
1.27 misho 1131: taskExit(task, NULL);
1.7 misho 1132: }
1.4 misho 1133:
1.7 misho 1134: static void *
1135: rxBLOB(sched_task_t *task)
1136: {
1137: rpc_cli_t *c = TASK_ARG(task);
1138: rpc_srv_t *s = c->cli_parent;
1139: rpc_blob_t *b;
1.10 misho 1140: struct tagBLOBHdr blob;
1.7 misho 1141: int rlen;
1142:
1.10 misho 1143: memset(&blob, 0, sizeof blob);
1144: rlen = recv(TASK_FD(task), &blob, sizeof blob, 0);
1145: if (rlen < 1) {
1146: /* close blob connection */
1147: schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0);
1.27 misho 1148: taskExit(task, NULL);
1.7 misho 1149: }
1.5 misho 1150:
1.10 misho 1151: /* check BLOB packet */
1152: if (rlen < sizeof(struct tagBLOBHdr)) {
1153: rpc_SetErr(ERPCMISMATCH, "Short BLOB packet");
1.6 misho 1154:
1.10 misho 1155: schedReadSelf(task);
1.27 misho 1156: taskExit(task, NULL);
1.7 misho 1157: }
1.1 misho 1158:
1.7 misho 1159: /* check RPC packet session info */
1.15 misho 1160: if (rpc_chkPktSession(&blob.hdr_session, &s->srv_session)) {
1.7 misho 1161: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
1.10 misho 1162: blob.hdr_cmd = error;
1.7 misho 1163: goto end;
1164: }
1165:
1166: /* Go to proceed packet ... */
1.10 misho 1167: switch (blob.hdr_cmd) {
1.7 misho 1168: case get:
1.10 misho 1169: if (!(b = rpc_srv_getBLOB(s, ntohl(blob.hdr_var)))) {
1170: rpc_SetErr(EINVAL, "Var=%x not found", ntohl(blob.hdr_var));
1171: blob.hdr_cmd = no;
1.27 misho 1172: RPC_SET_BLOB_RET(&blob, -1);
1.7 misho 1173: break;
1174: } else
1.10 misho 1175: blob.hdr_len = htonl(b->blob_len);
1.5 misho 1176:
1.7 misho 1177: if (rpc_srv_blobMap(s, b) != -1) {
1178: /* deliver BLOB variable to client */
1.10 misho 1179: blob.hdr_ret = htonl(rpc_srv_sendBLOB(c, b));
1.7 misho 1180: rpc_srv_blobUnmap(b);
1181: } else {
1.10 misho 1182: blob.hdr_cmd = error;
1.27 misho 1183: RPC_SET_BLOB_RET(&blob, -1);
1.7 misho 1184: }
1185: break;
1186: case set:
1.17 misho 1187: if ((b = rpc_srv_registerBLOB(s, ntohl(blob.hdr_len),
1188: ntohl(blob.hdr_ret)))) {
1.7 misho 1189: /* set new BLOB variable for reply :) */
1.10 misho 1190: blob.hdr_var = htonl(b->blob_var);
1.7 misho 1191:
1192: /* receive BLOB from client */
1.10 misho 1193: blob.hdr_ret = htonl(rpc_srv_recvBLOB(c, b));
1.7 misho 1194: rpc_srv_blobUnmap(b);
1.5 misho 1195: } else {
1.10 misho 1196: blob.hdr_cmd = error;
1.27 misho 1197: RPC_SET_BLOB_RET(&blob, -1);
1.7 misho 1198: }
1199: break;
1200: case unset:
1.11 misho 1201: if (rpc_srv_unregisterBLOB(s, ntohl(blob.hdr_var)) == -1) {
1.10 misho 1202: blob.hdr_cmd = error;
1.27 misho 1203: RPC_SET_BLOB_RET(&blob, -1);
1.1 misho 1204: }
1205: break;
1.7 misho 1206: default:
1.10 misho 1207: rpc_SetErr(EPROCUNAVAIL, "Unsupported BLOB command %d", blob.hdr_cmd);
1208: blob.hdr_cmd = error;
1.27 misho 1209: RPC_SET_BLOB_RET(&blob, -1);
1.7 misho 1210: }
1.1 misho 1211:
1.7 misho 1212: end:
1.10 misho 1213: memcpy(AIT_ADDR(&c->cli_buf), &blob, sizeof blob);
1214: schedWrite(TASK_ROOT(task), txBLOB, TASK_ARG(task), TASK_FD(task), NULL, 0);
1215: schedReadSelf(task);
1.27 misho 1216: taskExit(task, NULL);
1.2 misho 1217: }
1218:
1219: static void *
1.17 misho 1220: flushBLOB(sched_task_t *task)
1221: {
1.28 misho 1222: #ifdef atomic_load_acq_ptr
1.23 misho 1223: uintptr_t sigArg = atomic_load_acq_ptr(&_glSigArg);
1.28 misho 1224: #else
1225: uintptr_t sigArg = *((volatile uintptr_t*) &_glSigArg);
1226: #endif
1.23 misho 1227: rpc_srv_t *srv = sigArg ? (void*) sigArg : TASK_ARG(task);
1.17 misho 1228: rpc_blob_t *b, *tmp;
1229:
1230: TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) {
1231: TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node);
1232:
1233: rpc_srv_blobFree(srv, b);
1234: e_free(b);
1235: }
1236:
1.29 misho 1237: if (sigArg) {
1.23 misho 1238: /* disabled kqueue support in libaitsched */
1239: struct sigaction sa;
1240:
1241: memset(&sa, 0, sizeof sa);
1242: sigemptyset(&sa.sa_mask);
1243: sa.sa_handler = (void (*)(int)) flushBLOB;
1244: sa.sa_flags = SA_RESTART | SA_RESETHAND;
1245: sigaction(SIGFBLOB, &sa, NULL);
1.29 misho 1246: return NULL;
1247: } else {
1248: schedSignalSelf(task);
1249: taskExit(task, NULL);
1.23 misho 1250: }
1.17 misho 1251: }
1252:
1253: static void *
1.10 misho 1254: acceptBLOBClients(sched_task_t *task)
1.2 misho 1255: {
1.10 misho 1256: rpc_srv_t *srv = TASK_ARG(task);
1257: rpc_cli_t *c = NULL;
1258: register int i;
1.29 misho 1259: socklen_t salen = E_SOCKADDR_MAX;
1.21 misho 1260: int sock;
1.12 misho 1261: #ifdef TCP_NOPUSH
1262: int n = 1;
1263: #endif
1.7 misho 1264:
1.10 misho 1265: /* check free slots for connect */
1.14 misho 1266: for (i = 0; i < array_Size(srv->srv_blob.clients) &&
1267: (c = array(srv->srv_blob.clients, i, rpc_cli_t*)); i++);
1.21 misho 1268: if (c) { /* no more free slots! */
1269: EVERBOSE(1, "BLOB client quota exceeded! Connection will be shutdown!\n");
1270: if ((sock = accept(TASK_FD(task), NULL, NULL)) != -1) {
1271: shutdown(sock, SHUT_RDWR);
1272: close(sock);
1273: }
1.10 misho 1274: goto end;
1.21 misho 1275: }
1276:
1.14 misho 1277: c = e_malloc(sizeof(rpc_cli_t));
1.10 misho 1278: if (!c) {
1.7 misho 1279: LOGERR;
1.10 misho 1280: srv->srv_kill = srv->srv_blob.kill = 1;
1.27 misho 1281: taskExit(task, NULL);
1.7 misho 1282: } else {
1.10 misho 1283: memset(c, 0, sizeof(rpc_cli_t));
1.14 misho 1284: array_Set(srv->srv_blob.clients, i, c);
1.10 misho 1285: c->cli_id = i;
1286: c->cli_parent = srv;
1.7 misho 1287: }
1.4 misho 1288:
1.10 misho 1289: /* alloc empty buffer */
1.14 misho 1290: AIT_SET_BUFSIZ(&c->cli_buf, 0, srv->srv_netbuf);
1.2 misho 1291:
1.10 misho 1292: /* accept client */
1293: c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen);
1294: if (c->cli_sock == -1) {
1295: LOGERR;
1296: AIT_FREE_VAL(&c->cli_buf);
1.14 misho 1297: array_Del(srv->srv_blob.clients, i, 42);
1.10 misho 1298: goto end;
1.12 misho 1299: } else {
1300: #ifdef TCP_NOPUSH
1301: setsockopt(c->cli_sock, IPPROTO_TCP, TCP_NOPUSH, &n, sizeof n);
1302: #endif
1.10 misho 1303: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
1.30 misho 1304: fcntl(c->cli_sock, F_SETFD, FD_CLOEXEC);
1.12 misho 1305: }
1.2 misho 1306:
1.10 misho 1307: schedRead(TASK_ROOT(task), rxBLOB, c, c->cli_sock, NULL, 0);
1308: end:
1309: schedReadSelf(task);
1.27 misho 1310: taskExit(task, NULL);
1.1 misho 1311: }
1312:
1.10 misho 1313: /* ------------------------------------------------------ */
1.1 misho 1314:
1315: /*
1.7 misho 1316: * rpc_srv_initBLOBServer() - Init & create BLOB Server
1317: *
1.4 misho 1318: * @srv = RPC server instance
1.2 misho 1319: * @Port = Port for bind server, if Port == 0 default port is selected
1320: * @diskDir = Disk place for BLOB file objects
1321: * return: -1 == error or 0 bind and created BLOB server instance
1322: */
1323: int
1324: rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, u_short Port, const char *diskDir)
1325: {
1326: int n = 1;
1.29 misho 1327: socklen_t salen;
1.2 misho 1328:
1.10 misho 1329: if (!srv || srv->srv_kill) {
1.7 misho 1330: rpc_SetErr(EINVAL, "Invalid parameters can`t init BLOB server");
1.2 misho 1331: return -1;
1332: }
1333:
1334: memset(&srv->srv_blob, 0, sizeof srv->srv_blob);
1335: if (access(diskDir, R_OK | W_OK) == -1) {
1336: LOGERR;
1337: return -1;
1338: } else
1.7 misho 1339: AIT_SET_STR(&srv->srv_blob.dir, diskDir);
1.2 misho 1340:
1.10 misho 1341: /* init blob list */
1342: TAILQ_INIT(&srv->srv_blob.blobs);
1343:
1.2 misho 1344: srv->srv_blob.server.cli_parent = srv;
1.4 misho 1345:
1.29 misho 1346: memcpy(&srv->srv_blob.server.cli_sa, &srv->srv_server.cli_sa, sizeof srv->srv_blob.server.cli_sa);
1.10 misho 1347: switch (srv->srv_blob.server.cli_sa.sa.sa_family) {
1.4 misho 1348: case AF_INET:
1.10 misho 1349: srv->srv_blob.server.cli_sa.sin.sin_port =
1350: htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin.sin_port) + 1);
1.29 misho 1351: salen = sizeof srv->srv_blob.server.cli_sa.sin;
1.4 misho 1352: break;
1353: case AF_INET6:
1.10 misho 1354: srv->srv_blob.server.cli_sa.sin6.sin6_port =
1355: htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin6.sin6_port) + 1);
1.29 misho 1356: salen = sizeof srv->srv_blob.server.cli_sa.sin6;
1.4 misho 1357: break;
1358: case AF_LOCAL:
1.10 misho 1359: strlcat(srv->srv_blob.server.cli_sa.sun.sun_path, ".blob",
1360: sizeof srv->srv_blob.server.cli_sa.sun.sun_path);
1.29 misho 1361: salen = sizeof srv->srv_blob.server.cli_sa.sun;
1.4 misho 1362: break;
1363: default:
1.7 misho 1364: AIT_FREE_VAL(&srv->srv_blob.dir);
1.4 misho 1365: return -1;
1.2 misho 1366: }
1367:
1.4 misho 1368: /* create BLOB server socket */
1.6 misho 1369: srv->srv_blob.server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, SOCK_STREAM, 0);
1.2 misho 1370: if (srv->srv_blob.server.cli_sock == -1) {
1371: LOGERR;
1.7 misho 1372: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 1373: return -1;
1374: }
1375: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
1376: LOGERR;
1377: close(srv->srv_blob.server.cli_sock);
1.7 misho 1378: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 1379: return -1;
1380: }
1.5 misho 1381: n = srv->srv_netbuf;
1382: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
1383: LOGERR;
1384: close(srv->srv_blob.server.cli_sock);
1.7 misho 1385: AIT_FREE_VAL(&srv->srv_blob.dir);
1.5 misho 1386: return -1;
1387: }
1388: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
1389: LOGERR;
1390: close(srv->srv_blob.server.cli_sock);
1.7 misho 1391: AIT_FREE_VAL(&srv->srv_blob.dir);
1.5 misho 1392: return -1;
1393: }
1.29 misho 1394: if (bind(srv->srv_blob.server.cli_sock, &srv->srv_blob.server.cli_sa.sa, salen) == -1) {
1.2 misho 1395: LOGERR;
1396: close(srv->srv_blob.server.cli_sock);
1.7 misho 1397: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 1398: return -1;
1.13 misho 1399: } else
1400: fcntl(srv->srv_blob.server.cli_sock, F_SETFL,
1401: fcntl(srv->srv_blob.server.cli_sock, F_GETFL) | O_NONBLOCK);
1402:
1.2 misho 1403:
1.10 misho 1404: /* allocate pool for concurent blob clients */
1.14 misho 1405: srv->srv_blob.clients = array_Init(array_Size(srv->srv_clients));
1.2 misho 1406: if (!srv->srv_blob.clients) {
1.14 misho 1407: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1.2 misho 1408: close(srv->srv_blob.server.cli_sock);
1.7 misho 1409: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 1410: return -1;
1.10 misho 1411: }
1.2 misho 1412:
1.10 misho 1413: /* init blob scheduler */
1414: srv->srv_blob.root = schedBegin();
1415: if (!srv->srv_blob.root) {
1416: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1.14 misho 1417: array_Destroy(&srv->srv_blob.clients);
1.10 misho 1418: close(srv->srv_blob.server.cli_sock);
1419: AIT_FREE_VAL(&srv->srv_blob.dir);
1420: return -1;
1421: }
1.2 misho 1422:
1423: return 0;
1424: }
1425:
1426: /*
1.7 misho 1427: * rpc_srv_endBLOBServer() - Destroy BLOB server, close all opened sockets and free resources
1428: *
1.2 misho 1429: * @srv = RPC Server instance
1430: * return: none
1431: */
1.16 misho 1432: void
1.2 misho 1433: rpc_srv_endBLOBServer(rpc_srv_t * __restrict srv)
1434: {
1.10 misho 1435: if (!srv)
1.2 misho 1436: return;
1437:
1.10 misho 1438: srv->srv_blob.kill = 1;
1.17 misho 1439:
1.27 misho 1440: if (srv->srv_blob.server.cli_sa.sa.sa_family == AF_LOCAL)
1441: unlink(srv->srv_blob.server.cli_sa.sun.sun_path);
1.28 misho 1442:
1443: schedEnd(&srv->srv_blob.root);
1.2 misho 1444: }
1445:
1446: /*
1.10 misho 1447: * rpc_srv_loopBLOBServer() - Execute Main BLOB server loop and wait for clients requests
1.7 misho 1448: *
1.2 misho 1449: * @srv = RPC Server instance
1450: * return: -1 error or 0 ok, infinite loop ...
1451: */
1452: int
1.10 misho 1453: rpc_srv_loopBLOBServer(rpc_srv_t * __restrict srv)
1.2 misho 1454: {
1.10 misho 1455: rpc_cli_t *c;
1.2 misho 1456: register int i;
1.10 misho 1457: rpc_blob_t *b, *tmp;
1458: struct timespec ts = { RPC_SCHED_POLLING, 0 };
1.2 misho 1459:
1.10 misho 1460: if (!srv || srv->srv_kill) {
1.7 misho 1461: rpc_SetErr(EINVAL, "Invalid parameter can`t start BLOB server");
1.2 misho 1462: return -1;
1463: }
1464:
1.14 misho 1465: if (listen(srv->srv_blob.server.cli_sock, array_Size(srv->srv_blob.clients)) == -1) {
1.2 misho 1466: LOGERR;
1467: return -1;
1.10 misho 1468: }
1469:
1.23 misho 1470: if (!schedSignal(srv->srv_blob.root, flushBLOB, srv, SIGFBLOB, NULL, 0)) {
1471: /* disabled kqueue support in libaitsched */
1472: struct sigaction sa;
1473:
1.28 misho 1474: #ifdef atomic_store_rel_ptr
1.23 misho 1475: atomic_store_rel_ptr(&_glSigArg, (uintptr_t) srv);
1.28 misho 1476: #else
1477: *((volatile uintptr_t*) &_glSigArg) = (uintptr_t) srv;
1478: #endif
1.23 misho 1479:
1480: memset(&sa, 0, sizeof sa);
1481: sigemptyset(&sa.sa_mask);
1482: sa.sa_handler = (void (*)(int)) flushBLOB;
1483: sa.sa_flags = SA_RESTART | SA_RESETHAND;
1484: sigaction(SIGFBLOB, &sa, NULL);
1485: }
1486:
1.10 misho 1487: if (!schedRead(srv->srv_blob.root, acceptBLOBClients, srv,
1488: srv->srv_blob.server.cli_sock, NULL, 0)) {
1489: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1490: return -1;
1491: }
1.2 misho 1492:
1.10 misho 1493: schedPolling(srv->srv_blob.root, &ts, NULL);
1494: /* main rpc loop */
1495: schedRun(srv->srv_blob.root, &srv->srv_blob.kill);
1.7 misho 1496:
1.17 misho 1497: /* detach blobs */
1498: TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) {
1499: TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node);
1500:
1501: rpc_srv_blobFree(srv, b);
1502: e_free(b);
1503: }
1504:
1.10 misho 1505: /* close all clients connections & server socket */
1.14 misho 1506: for (i = 0; i < array_Size(srv->srv_blob.clients); i++) {
1507: c = array(srv->srv_blob.clients, i, rpc_cli_t*);
1.10 misho 1508: if (c) {
1509: shutdown(c->cli_sock, SHUT_RDWR);
1510: close(c->cli_sock);
1511:
1512: schedCancelby(srv->srv_blob.root, taskMAX, CRITERIA_ARG, c, NULL);
1513: AIT_FREE_VAL(&c->cli_buf);
1.2 misho 1514: }
1.14 misho 1515: array_Del(srv->srv_blob.clients, i, 42);
1.10 misho 1516: }
1.14 misho 1517: array_Destroy(&srv->srv_blob.clients);
1.2 misho 1518:
1.10 misho 1519: close(srv->srv_blob.server.cli_sock);
1.2 misho 1520:
1.10 misho 1521: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 1522: return 0;
1523: }
1524:
1525:
1526: /*
1.7 misho 1527: * rpc_srv_initServer() - Init & create RPC Server
1528: *
1.15 misho 1529: * @InstID = Instance for authentication & recognition
1.1 misho 1530: * @concurentClients = Concurent clients at same time to this server
1.10 misho 1531: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
1.4 misho 1532: * @csHost = Host name or address for bind server, if NULL any address
1.1 misho 1533: * @Port = Port for bind server, if Port == 0 default port is selected
1.13 misho 1534: * @proto = Protocol, if == 0 choose SOCK_STREAM
1.1 misho 1535: * return: NULL == error or !=NULL bind and created RPC server instance
1536: */
1537: rpc_srv_t *
1.15 misho 1538: rpc_srv_initServer(u_char InstID, int concurentClients, int netBuf,
1539: const char *csHost, u_short Port, int proto)
1.1 misho 1540: {
1.10 misho 1541: int n = 1;
1.1 misho 1542: rpc_srv_t *srv = NULL;
1.14 misho 1543: sockaddr_t sa = E_SOCKADDR_INIT;
1.29 misho 1544: socklen_t salen;
1.1 misho 1545:
1.25 misho 1546: if (!concurentClients || (proto < 0 || proto > SOCK_RAW)) {
1.10 misho 1547: rpc_SetErr(EINVAL, "Invalid parameters can`t init RPC server");
1.1 misho 1548: return NULL;
1549: }
1.27 misho 1550: if (!Port && proto < SOCK_RAW)
1551: Port = RPC_DEFPORT;
1.29 misho 1552: if (!(salen = e_gethostbyname(csHost, Port, &sa)))
1.10 misho 1553: return NULL;
1.13 misho 1554: if (!proto)
1555: proto = SOCK_STREAM;
1.10 misho 1556: if (netBuf < RPC_MIN_BUFSIZ)
1.5 misho 1557: netBuf = BUFSIZ;
1.7 misho 1558: else
1.14 misho 1559: netBuf = E_ALIGN(netBuf, 2); /* align netBuf length */
1.10 misho 1560:
1561: #ifdef HAVE_SRANDOMDEV
1562: srandomdev();
1563: #else
1564: time_t tim;
1565:
1566: srandom((time(&tim) ^ getpid()));
1567: #endif
1.1 misho 1568:
1.14 misho 1569: srv = e_malloc(sizeof(rpc_srv_t));
1.1 misho 1570: if (!srv) {
1571: LOGERR;
1572: return NULL;
1573: } else
1574: memset(srv, 0, sizeof(rpc_srv_t));
1575:
1.13 misho 1576: srv->srv_proto = proto;
1.5 misho 1577: srv->srv_netbuf = netBuf;
1.1 misho 1578: srv->srv_session.sess_version = RPC_VERSION;
1.15 misho 1579: srv->srv_session.sess_instance = InstID;
1.1 misho 1580:
1581: srv->srv_server.cli_parent = srv;
1.10 misho 1582: memcpy(&srv->srv_server.cli_sa, &sa, sizeof srv->srv_server.cli_sa);
1583:
1.12 misho 1584: /* init functions */
1585: pthread_mutex_init(&srv->srv_funcs.mtx, NULL);
1586: SLIST_INIT(&srv->srv_funcs);
1.33 misho 1587: RB_INIT(&srv->srv_funcs);
1.10 misho 1588:
1589: /* init scheduler */
1590: srv->srv_root = schedBegin();
1591: if (!srv->srv_root) {
1592: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1.12 misho 1593: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1.14 misho 1594: e_free(srv);
1.10 misho 1595: return NULL;
1596: }
1597:
1598: /* init pool for clients */
1.14 misho 1599: srv->srv_clients = array_Init(concurentClients);
1.10 misho 1600: if (!srv->srv_clients) {
1.14 misho 1601: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1.10 misho 1602: schedEnd(&srv->srv_root);
1.12 misho 1603: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1.14 misho 1604: e_free(srv);
1.10 misho 1605: return NULL;
1606: }
1.4 misho 1607:
1608: /* create server socket */
1.26 misho 1609: srv->srv_server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family,
1610: srv->srv_proto, srv->srv_proto == SOCK_RAW ? IPPROTO_ERPC : 0);
1.1 misho 1611: if (srv->srv_server.cli_sock == -1) {
1612: LOGERR;
1.14 misho 1613: array_Destroy(&srv->srv_clients);
1.10 misho 1614: schedEnd(&srv->srv_root);
1.12 misho 1615: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1.14 misho 1616: e_free(srv);
1.1 misho 1617: return NULL;
1618: }
1619: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
1620: LOGERR;
1.10 misho 1621: goto err;
1.1 misho 1622: }
1.27 misho 1623: if (srv->srv_proto == SOCK_STREAM)
1624: setsockopt(srv->srv_server.cli_sock, IPPROTO_TCP, TCP_NODELAY, &n, sizeof n);
1.5 misho 1625: n = srv->srv_netbuf;
1626: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
1627: LOGERR;
1.10 misho 1628: goto err;
1.5 misho 1629: }
1630: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
1631: LOGERR;
1.10 misho 1632: goto err;
1.5 misho 1633: }
1.29 misho 1634: if (bind(srv->srv_server.cli_sock, &srv->srv_server.cli_sa.sa, salen) == -1) {
1.1 misho 1635: LOGERR;
1.10 misho 1636: goto err;
1.13 misho 1637: } else
1638: fcntl(srv->srv_server.cli_sock, F_SETFL,
1639: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
1.1 misho 1640:
1.10 misho 1641: rpc_register_srvPing(srv);
1.8 misho 1642:
1.1 misho 1643: return srv;
1.10 misho 1644: err: /* error condition */
1645: close(srv->srv_server.cli_sock);
1.14 misho 1646: array_Destroy(&srv->srv_clients);
1.10 misho 1647: schedEnd(&srv->srv_root);
1.12 misho 1648: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1.14 misho 1649: e_free(srv);
1.10 misho 1650: return NULL;
1.1 misho 1651: }
1652:
1653: /*
1.7 misho 1654: * rpc_srv_endServer() - Destroy RPC server, close all opened sockets and free resources
1655: *
1.6 misho 1656: * @psrv = RPC Server instance
1.1 misho 1657: * return: none
1658: */
1.16 misho 1659: void
1.6 misho 1660: rpc_srv_endServer(rpc_srv_t ** __restrict psrv)
1.1 misho 1661: {
1.10 misho 1662: if (!psrv || !*psrv)
1.1 misho 1663: return;
1664:
1.10 misho 1665: /* if send kill to blob server */
1.17 misho 1666: rpc_srv_endBLOBServer(*psrv);
1.28 misho 1667: /* wait for BLOB server done */
1668: while (*(&(*psrv)->srv_blob.root))
1669: usleep(1000);
1.1 misho 1670:
1.10 misho 1671: (*psrv)->srv_kill = 1;
1672: sleep(RPC_SCHED_POLLING);
1.2 misho 1673:
1.27 misho 1674: if ((*psrv)->srv_server.cli_sa.sa.sa_family == AF_LOCAL)
1675: unlink((*psrv)->srv_server.cli_sa.sun.sun_path);
1676:
1.28 misho 1677: schedEnd(&(*psrv)->srv_root);
1678:
1.12 misho 1679: pthread_mutex_destroy(&(*psrv)->srv_funcs.mtx);
1.14 misho 1680: e_free(*psrv);
1.6 misho 1681: *psrv = NULL;
1.1 misho 1682: }
1683:
1684: /*
1.7 misho 1685: * rpc_srv_loopServer() - Execute Main server loop and wait for clients requests
1686: *
1.1 misho 1687: * @srv = RPC Server instance
1688: * return: -1 error or 0 ok, infinite loop ...
1689: */
1690: int
1.5 misho 1691: rpc_srv_loopServer(rpc_srv_t * __restrict srv)
1.1 misho 1692: {
1.10 misho 1693: rpc_cli_t *c;
1.1 misho 1694: register int i;
1.12 misho 1695: rpc_func_t *f;
1.10 misho 1696: struct timespec ts = { RPC_SCHED_POLLING, 0 };
1.1 misho 1697:
1698: if (!srv) {
1.10 misho 1699: rpc_SetErr(EINVAL, "Invalid parameter can`t start RPC server");
1.1 misho 1700: return -1;
1701: }
1702:
1.13 misho 1703: if (srv->srv_proto == SOCK_STREAM)
1.14 misho 1704: if (listen(srv->srv_server.cli_sock, array_Size(srv->srv_clients)) == -1) {
1.13 misho 1705: LOGERR;
1706: return -1;
1707: }
1.1 misho 1708:
1.13 misho 1709: if (!schedRead(srv->srv_root, cbProto[srv->srv_proto][CB_ACCEPTCLIENT], srv,
1710: srv->srv_server.cli_sock, NULL, 0)) {
1.10 misho 1711: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1712: return -1;
1713: }
1.7 misho 1714:
1.10 misho 1715: schedPolling(srv->srv_root, &ts, NULL);
1.7 misho 1716: /* main rpc loop */
1.10 misho 1717: schedRun(srv->srv_root, &srv->srv_kill);
1718:
1719: /* close all clients connections & server socket */
1.14 misho 1720: for (i = 0; i < array_Size(srv->srv_clients); i++) {
1721: c = array(srv->srv_clients, i, rpc_cli_t*);
1.10 misho 1722: if (c) {
1.24 misho 1723: if (srv->srv_proto == SOCK_STREAM) {
1724: shutdown(c->cli_sock, SHUT_RDWR);
1725: close(c->cli_sock);
1726: }
1.10 misho 1727:
1728: schedCancelby(srv->srv_root, taskMAX, CRITERIA_ARG, c, NULL);
1.14 misho 1729: ait_freeVars(&RPC_RETVARS(c));
1.10 misho 1730: AIT_FREE_VAL(&c->cli_buf);
1.1 misho 1731: }
1.14 misho 1732: array_Del(srv->srv_clients, i, 42);
1.10 misho 1733: }
1.14 misho 1734: array_Destroy(&srv->srv_clients);
1.2 misho 1735:
1.25 misho 1736: if (srv->srv_proto != SOCK_EXT)
1737: close(srv->srv_server.cli_sock);
1.2 misho 1738:
1.10 misho 1739: /* detach exported calls */
1.12 misho 1740: RPC_FUNCS_LOCK(&srv->srv_funcs);
1741: while ((f = SLIST_FIRST(&srv->srv_funcs))) {
1742: SLIST_REMOVE_HEAD(&srv->srv_funcs, func_next);
1.1 misho 1743:
1.10 misho 1744: AIT_FREE_VAL(&f->func_name);
1.14 misho 1745: e_free(f);
1.1 misho 1746: }
1.33 misho 1747: srv->srv_funcs.rbh_root = NULL;
1.12 misho 1748: RPC_FUNCS_UNLOCK(&srv->srv_funcs);
1.1 misho 1749:
1750: return 0;
1751: }
1752:
1753:
1754: /*
1755: * rpc_srv_execCall() Execute registered call from RPC server
1.7 misho 1756: *
1.10 misho 1757: * @cli = RPC client
1.1 misho 1758: * @rpc = IN RPC call structure
1.10 misho 1759: * @funcname = Execute RPC function
1.5 misho 1760: * @args = IN RPC calling arguments from RPC client
1.1 misho 1761: * return: -1 error, !=-1 ok
1762: */
1763: int
1.10 misho 1764: rpc_srv_execCall(rpc_cli_t * __restrict cli, struct tagRPCCall * __restrict rpc,
1765: ait_val_t funcname, array_t * __restrict args)
1.1 misho 1766: {
1767: rpc_callback_t func;
1768:
1.10 misho 1769: if (!cli || !rpc || !AIT_ADDR(&funcname)) {
1.7 misho 1770: rpc_SetErr(EINVAL, "Invalid parameter can`t exec function");
1.1 misho 1771: return -1;
1772: }
1773:
1.10 misho 1774: func = AIT_GET_LIKE(&funcname, rpc_callback_t);
1775: return func(cli, rpc, args);
1.1 misho 1776: }
1.24 misho 1777:
1778:
1779: /*
1780: * rpc_srv_initServer2() - Init & create layer2 RPC Server
1781: *
1782: * @InstID = Instance for authentication & recognition
1783: * @concurentClients = Concurent clients at same time to this server
1784: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
1785: * @csIface = Interface name for bind server, if NULL first interface on host
1786: * return: NULL == error or !=NULL bind and created RPC server instance
1787: */
1788: rpc_srv_t *
1789: rpc_srv_initServer2(u_char InstID, int concurentClients, int netBuf, const char *csIface)
1790: {
1.29 misho 1791: #ifndef __linux__
1.24 misho 1792: int n = 1;
1793: rpc_srv_t *srv = NULL;
1794: sockaddr_t sa = E_SOCKADDR_INIT;
1795: char szIface[64], szStr[STRSIZ];
1796: register int i;
1797: struct ifreq ifr;
1798: struct bpf_insn insns[] = {
1799: BPF_STMT(BPF_LD + BPF_H + BPF_ABS, 12),
1800: BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, RPC_DEFPORT, 0, 1),
1801: BPF_STMT(BPF_RET + BPF_K, -1),
1802: BPF_STMT(BPF_RET + BPF_K, 0),
1803: };
1804: struct bpf_program fcode = {
1805: .bf_len = sizeof(insns) / sizeof(struct bpf_insn),
1806: .bf_insns = insns
1807: };
1808:
1809: if (!concurentClients) {
1810: rpc_SetErr(EINVAL, "Invalid parameters can`t init RPC server");
1811: return NULL;
1812: }
1813: if (!csIface) {
1814: if (e_get1stiface(szIface, sizeof szIface))
1815: return NULL;
1816: } else
1817: strlcpy(szIface, csIface, sizeof szIface);
1818: if (!e_getifacebyname(szIface, &sa))
1819: return NULL;
1820:
1821: #ifdef HAVE_SRANDOMDEV
1822: srandomdev();
1823: #else
1824: time_t tim;
1825:
1826: srandom((time(&tim) ^ getpid()));
1827: #endif
1828:
1829: srv = e_malloc(sizeof(rpc_srv_t));
1830: if (!srv) {
1831: LOGERR;
1832: return NULL;
1833: } else
1834: memset(srv, 0, sizeof(rpc_srv_t));
1835:
1836: srv->srv_proto = SOCK_BPF;
1837: srv->srv_netbuf = netBuf;
1838: srv->srv_session.sess_version = RPC_VERSION;
1839: srv->srv_session.sess_instance = InstID;
1840:
1841: srv->srv_server.cli_parent = srv;
1842: memcpy(&srv->srv_server.cli_sa, &sa, sizeof srv->srv_server.cli_sa);
1843:
1844: /* init functions */
1845: pthread_mutex_init(&srv->srv_funcs.mtx, NULL);
1846: SLIST_INIT(&srv->srv_funcs);
1.33 misho 1847: RB_INIT(&srv->srv_funcs);
1.24 misho 1848:
1849: /* init scheduler */
1850: srv->srv_root = schedBegin();
1851: if (!srv->srv_root) {
1852: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1853: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1854: e_free(srv);
1855: return NULL;
1856: }
1857:
1858: /* init pool for clients */
1859: srv->srv_clients = array_Init(concurentClients);
1860: if (!srv->srv_clients) {
1861: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1862: schedEnd(&srv->srv_root);
1863: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1864: e_free(srv);
1865: return NULL;
1866: }
1867:
1868: /* create server handler */
1869: for (i = 0; i < 10; i++) {
1870: memset(szStr, 0, sizeof szStr);
1871: snprintf(szStr, sizeof szStr, "/dev/bpf%d", i);
1872: srv->srv_server.cli_sock = open(szStr, O_RDWR);
1873: if (srv->srv_server.cli_sock > STDERR_FILENO)
1874: break;
1875: }
1876: if (srv->srv_server.cli_sock < 3) {
1877: LOGERR;
1878: array_Destroy(&srv->srv_clients);
1879: schedEnd(&srv->srv_root);
1880: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1881: e_free(srv);
1882: return NULL;
1883: }
1884:
1885: if (ioctl(srv->srv_server.cli_sock, BIOCIMMEDIATE, &n) == -1) {
1886: LOGERR;
1887: goto err;
1888: }
1889: if (ioctl(srv->srv_server.cli_sock, BIOCSETF, &fcode) == -1) {
1890: LOGERR;
1891: goto err;
1892: }
1893: n = (netBuf < RPC_MIN_BUFSIZ) ? getpagesize() : E_ALIGN(netBuf, 2);
1894: if (ioctl(srv->srv_server.cli_sock, BIOCSBLEN, &n) == -1) {
1895: LOGERR;
1896: goto err;
1897: } else
1898: srv->srv_netbuf = n;
1899:
1900: memset(&ifr, 0, sizeof ifr);
1901: strlcpy(ifr.ifr_name, szIface, sizeof ifr.ifr_name);
1902: if (ioctl(srv->srv_server.cli_sock, BIOCSETIF, &ifr) == -1) {
1903: LOGERR;
1904: goto err;
1905: } else
1906: fcntl(srv->srv_server.cli_sock, F_SETFL,
1907: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
1908:
1909: rpc_register_srvPing(srv);
1910:
1911: return srv;
1912: err: /* error condition */
1913: close(srv->srv_server.cli_sock);
1914: array_Destroy(&srv->srv_clients);
1915: schedEnd(&srv->srv_root);
1916: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1917: e_free(srv);
1.29 misho 1918: #else
1919: rpc_SetErr(ENOTSUP, "Feature isn't supported on Linux!");
1920: #endif
1921:
1.24 misho 1922: return NULL;
1923: }
1.25 misho 1924:
1925: /*
1926: * rpc_srv_initServerExt() - Init & create pipe RPC Server
1927: *
1928: * @InstID = Instance for authentication & recognition
1929: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
1930: * @fd = File descriptor
1931: * return: NULL == error or !=NULL bind and created RPC server instance
1932: */
1933: rpc_srv_t *
1934: rpc_srv_initServerExt(u_char InstID, int netBuf, int fd)
1935: {
1936: rpc_srv_t *srv = NULL;
1937:
1938: #ifdef HAVE_SRANDOMDEV
1939: srandomdev();
1940: #else
1941: time_t tim;
1942:
1943: srandom((time(&tim) ^ getpid()));
1944: #endif
1945:
1946: srv = e_malloc(sizeof(rpc_srv_t));
1947: if (!srv) {
1948: LOGERR;
1949: return NULL;
1950: } else
1951: memset(srv, 0, sizeof(rpc_srv_t));
1952:
1953: srv->srv_proto = SOCK_EXT;
1954: srv->srv_netbuf = (netBuf < RPC_MIN_BUFSIZ) ?
1955: getpagesize() : E_ALIGN(netBuf, 2);
1956: srv->srv_session.sess_version = RPC_VERSION;
1957: srv->srv_session.sess_instance = InstID;
1958:
1959: srv->srv_server.cli_parent = srv;
1960: srv->srv_server.cli_sock = fd;
1961:
1962: /* init functions */
1963: pthread_mutex_init(&srv->srv_funcs.mtx, NULL);
1964: SLIST_INIT(&srv->srv_funcs);
1.33 misho 1965: RB_INIT(&srv->srv_funcs);
1.25 misho 1966:
1967: /* init scheduler */
1968: srv->srv_root = schedBegin();
1969: if (!srv->srv_root) {
1970: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1971: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1972: e_free(srv);
1973: return NULL;
1974: }
1975:
1976: /* init pool for clients */
1977: srv->srv_clients = array_Init(1);
1978: if (!srv->srv_clients) {
1979: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1980: schedEnd(&srv->srv_root);
1981: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1982: e_free(srv);
1983: return NULL;
1984: }
1985:
1986: fcntl(srv->srv_server.cli_sock, F_SETFL,
1987: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
1988:
1989: rpc_register_srvPing(srv);
1990:
1991: return srv;
1992: }
1.31 misho 1993:
1994: /*
1995: * rpc_srv_Return() - Prepare IPC return answer to RPC client
1996: *
1997: * @c = RPC client
1998: * return: number of arguments in response
1999: */
2000: int
2001: rpc_srv_Return(rpc_cli_t *c)
2002: {
2003: rpc_srv_t *s = c->cli_parent;
2004: u_char *buf = AIT_GET_BUF(&c->cli_buf);
2005: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
2006:
2007: if (!RPC_CHK_NOREPLY(rpc)) {
2008: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
2009: schedWrite(s->srv_root, cbProto[s->srv_proto][CB_TXPACKET], c, c->cli_sock, rpc, 0);
2010: } else
2011: rpc->call_argc ^= rpc->call_argc;
2012:
2013: return rpc->call_argc;
2014: }
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