Annotation of libaitrpc/src/srv.c, revision 1.25.2.1
1.1 misho 1: /*************************************************************************
2: * (C) 2010 AITNET ltd - Sofia/Bulgaria - <misho@aitbg.com>
3: * by Michael Pounov <misho@openbsd-bg.org>
4: *
5: * $Author: misho $
1.25.2.1! misho 6: * $Id: srv.c,v 1.25 2015/01/21 21:17:05 misho Exp $
1.1 misho 7: *
1.2 misho 8: **************************************************************************
9: The ELWIX and AITNET software is distributed under the following
10: terms:
11:
12: All of the documentation and software included in the ELWIX and AITNET
13: Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>
14:
1.25 misho 15: Copyright 2004 - 2015
1.2 misho 16: by Michael Pounov <misho@elwix.org>. All rights reserved.
17:
18: Redistribution and use in source and binary forms, with or without
19: modification, are permitted provided that the following conditions
20: are met:
21: 1. Redistributions of source code must retain the above copyright
22: notice, this list of conditions and the following disclaimer.
23: 2. Redistributions in binary form must reproduce the above copyright
24: notice, this list of conditions and the following disclaimer in the
25: documentation and/or other materials provided with the distribution.
26: 3. All advertising materials mentioning features or use of this software
27: must display the following acknowledgement:
28: This product includes software developed by Michael Pounov <misho@elwix.org>
29: ELWIX - Embedded LightWeight unIX and its contributors.
30: 4. Neither the name of AITNET nor the names of its contributors
31: may be used to endorse or promote products derived from this software
32: without specific prior written permission.
33:
34: THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND
35: ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
36: IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
37: ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
38: FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
39: DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
40: OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
41: HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
42: LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
43: OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
44: SUCH DAMAGE.
45: */
1.1 misho 46: #include "global.h"
47:
48:
1.13 misho 49: /* SOCK_STREAM */
50: static void *acceptClients(sched_task_t *);
51: static void *closeClient(sched_task_t *);
52: static void *rxPacket(sched_task_t *);
53: static void *txPacket(sched_task_t *);
54:
55: /* SOCK_DGRAM */
56: static void *freeClient(sched_task_t *);
57: static void *rxUDPPacket(sched_task_t *);
58: static void *txUDPPacket(sched_task_t *);
59:
60: /* SOCK_RAW */
61:
1.24 misho 62: /* SOCK_BPF */
63: static void *rxBPFPacket(sched_task_t *);
64: static void *txBPFPacket(sched_task_t *);
65:
1.25 misho 66: /* SOCK_EXT */
67: static void *rxEXTPacket(sched_task_t *);
68: static void *txEXTPacket(sched_task_t *);
69:
70: static sched_task_func_t cbProto[SOCK_MAX_SUPPORT][4] = {
1.13 misho 71: { acceptClients, closeClient, rxPacket, txPacket }, /* SOCK_STREAM */
72: { acceptClients, closeClient, rxPacket, txPacket }, /* SOCK_STREAM */
73: { rxUDPPacket, freeClient, rxUDPPacket, txUDPPacket }, /* SOCK_DGRAM */
1.24 misho 74: { NULL, NULL, NULL, NULL }, /* SOCK_RAW */
1.25 misho 75: { rxBPFPacket, freeClient, rxBPFPacket, txBPFPacket }, /* SOCK_BPF */
76: { rxEXTPacket, freeClient, rxEXTPacket, txEXTPacket } /* SOCK_EXT */
1.13 misho 77: };
78:
1.23 misho 79: /* Global Signal Argument when kqueue support disabled */
80:
81: static volatile uintptr_t _glSigArg = 0;
82:
1.13 misho 83:
1.16 misho 84: void
1.13 misho 85: rpc_freeCli(rpc_cli_t * __restrict c)
1.10 misho 86: {
87: rpc_srv_t *s = c->cli_parent;
88:
1.13 misho 89: schedCancelby(s->srv_root, taskMAX, CRITERIA_ARG, c, NULL);
1.10 misho 90:
91: /* free buffer */
92: AIT_FREE_VAL(&c->cli_buf);
93:
1.14 misho 94: array_Del(s->srv_clients, c->cli_id, 0);
1.10 misho 95: if (c)
1.14 misho 96: e_free(c);
1.13 misho 97: }
98:
99:
100: static inline int
1.14 misho 101: _check4freeslot(rpc_srv_t * __restrict srv, sockaddr_t * __restrict sa)
1.13 misho 102: {
103: rpc_cli_t *c = NULL;
104: register int i;
105:
106: /* check free slots for connect */
1.14 misho 107: for (i = 0; i < array_Size(srv->srv_clients) &&
108: (c = array(srv->srv_clients, i, rpc_cli_t*)); i++)
1.13 misho 109: /* check for duplicates */
1.14 misho 110: if (sa && !e_addrcmp(&c->cli_sa, sa, 42))
1.13 misho 111: break;
1.14 misho 112: if (i >= array_Size(srv->srv_clients))
1.13 misho 113: return -1; /* no more free slots! */
114:
115: return i;
116: }
117:
118: static rpc_cli_t *
1.14 misho 119: _allocClient(rpc_srv_t * __restrict srv, sockaddr_t * __restrict sa)
1.13 misho 120: {
121: rpc_cli_t *c = NULL;
122: int n;
123:
1.25 misho 124: if (srv->srv_proto != SOCK_EXT)
125: n = _check4freeslot(srv, sa);
126: else
127: n = 0;
1.13 misho 128: if (n == -1)
129: return NULL;
130: else
1.14 misho 131: c = array(srv->srv_clients, n, rpc_cli_t*);
1.13 misho 132:
133: if (!c) {
1.14 misho 134: c = e_malloc(sizeof(rpc_cli_t));
1.13 misho 135: if (!c) {
136: LOGERR;
137: srv->srv_kill = 1;
138: return NULL;
139: } else {
140: memset(c, 0, sizeof(rpc_cli_t));
1.14 misho 141: array_Set(srv->srv_clients, n, c);
1.13 misho 142: c->cli_id = n;
143: c->cli_parent = srv;
144: }
145:
146: /* alloc empty buffer */
1.14 misho 147: AIT_SET_BUFSIZ(&c->cli_buf, 0, srv->srv_netbuf);
1.13 misho 148: }
149:
150: return c;
151: }
152:
153:
154: static void *
155: freeClient(sched_task_t *task)
156: {
157: rpc_freeCli(TASK_ARG(task));
158:
159: return NULL;
160: }
161:
162: static void *
163: closeClient(sched_task_t *task)
164: {
165: int sock = ((rpc_cli_t*) TASK_ARG(task))->cli_sock;
166:
167: rpc_freeCli(TASK_ARG(task));
168:
169: /* close client socket */
170: shutdown(sock, SHUT_RDWR);
171: close(sock);
1.10 misho 172: return NULL;
173: }
1.7 misho 174:
175: static void *
176: txPacket(sched_task_t *task)
177: {
178: rpc_cli_t *c = TASK_ARG(task);
179: rpc_srv_t *s = c->cli_parent;
180: rpc_func_t *f = NULL;
1.18 misho 181: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1.7 misho 182: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
1.18 misho 183: int ret, estlen, wlen = sizeof(struct tagRPCCall);
1.19 misho 184: struct pollfd pfd;
1.21 misho 185: #ifdef TCP_SESSION_TIMEOUT
186: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
187:
188: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
189: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
190: TASK_ARG(task), ts, TASK_ARG(task), 0);
191: #endif
1.7 misho 192:
193: if (rpc->call_argc) {
1.10 misho 194: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
1.7 misho 195: if (!f) {
1.10 misho 196: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
1.18 misho 197:
1.7 misho 198: rpc->call_argc ^= rpc->call_argc;
199: rpc->call_rep.ret = RPC_ERROR(-1);
200: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
201: } else {
1.18 misho 202: /* calc estimated length */
203: estlen = ait_resideVars(RPC_RETVARS(c)) + wlen;
204: if (estlen > AIT_LEN(&c->cli_buf))
205: AIT_RE_BUF(&c->cli_buf, estlen);
206: buf = AIT_GET_BUF(&c->cli_buf);
1.19 misho 207: rpc = (struct tagRPCCall*) buf;
1.18 misho 208:
1.25 misho 209: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
1.7 misho 210: /* Go Encapsulate variables */
1.18 misho 211: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
212: RPC_RETVARS(c));
1.10 misho 213: /* Free return values */
1.14 misho 214: ait_freeVars(&c->cli_vars);
1.7 misho 215: if (ret == -1) {
216: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
1.19 misho 217:
1.7 misho 218: rpc->call_argc ^= rpc->call_argc;
219: rpc->call_rep.ret = RPC_ERROR(-1);
220: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
221: } else
222: wlen += ret;
223: }
224: }
225:
1.18 misho 226: rpc->call_len = htonl(wlen);
1.25 misho 227: rpc->call_io = RPC_ACK;
1.8 misho 228:
1.15 misho 229: #if 0
1.7 misho 230: /* calculate CRC */
231: rpc->call_crc ^= rpc->call_crc;
1.8 misho 232: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
1.15 misho 233: #endif
1.7 misho 234:
235: /* send reply */
1.19 misho 236: pfd.fd = TASK_FD(task);
237: pfd.events = POLLOUT;
238: for (; wlen > 0; wlen -= ret, buf += ret) {
239: if ((ret = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 ||
240: pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
241: if (ret)
242: LOGERR;
243: else
1.22 misho 244: rpc_SetErr(ETIMEDOUT, "Timeout reached! Client not respond");
1.19 misho 245: /* close connection */
246: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
247: TASK_ARG(task), 0, NULL, 0);
248: return NULL;
249: }
250: ret = send(TASK_FD(task), buf, MIN(wlen, s->srv_netbuf), MSG_NOSIGNAL);
251: if (ret == -1) {
252: /* close connection */
253: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
254: TASK_ARG(task), 0, NULL, 0);
255: return NULL;
256: }
1.10 misho 257: }
1.7 misho 258:
259: return NULL;
260: }
261:
262: static void *
263: execCall(sched_task_t *task)
264: {
265: rpc_cli_t *c = TASK_ARG(task);
266: rpc_srv_t *s = c->cli_parent;
267: rpc_func_t *f = NULL;
268: array_t *arr = NULL;
1.18 misho 269: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1.7 misho 270: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
1.25 misho 271: int argc = rpc->call_argc;
1.7 misho 272:
273: /* Go decapsulate variables ... */
1.8 misho 274: if (argc) {
1.14 misho 275: arr = ait_buffer2vars(buf + sizeof(struct tagRPCCall),
1.18 misho 276: AIT_LEN(&c->cli_buf) - sizeof(struct tagRPCCall), argc, 42);
1.7 misho 277: if (!arr) {
1.14 misho 278: rpc_SetErr(ERPCMISMATCH, "#%d - %s", elwix_GetErrno(), elwix_GetError());
1.18 misho 279:
1.7 misho 280: rpc->call_argc ^= rpc->call_argc;
281: rpc->call_rep.ret = RPC_ERROR(-1);
282: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
283: return NULL;
284: }
1.10 misho 285: } else
286: arr = NULL;
1.7 misho 287:
1.10 misho 288: if (!(f = rpc_srv_getCall(s, ntohs(rpc->call_tag)))) {
1.7 misho 289: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
1.18 misho 290:
1.7 misho 291: rpc->call_argc ^= rpc->call_argc;
292: rpc->call_rep.ret = RPC_ERROR(-1);
293: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
294: } else {
1.8 misho 295: /* if client doesn't want reply */
1.10 misho 296: argc = RPC_CHK_NOREPLY(rpc);
297: rpc->call_rep.ret = RPC_ERROR(rpc_srv_execCall(c, rpc, f->func_name, arr));
1.7 misho 298: if (rpc->call_rep.ret == htonl(-1)) {
1.20 misho 299: if (!rpc->call_rep.eno) {
300: LOGERR;
301: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
302: }
1.7 misho 303: rpc->call_argc ^= rpc->call_argc;
304: } else {
305: rpc->call_rep.eno ^= rpc->call_rep.eno;
1.8 misho 306: if (argc) {
307: /* without reply */
1.14 misho 308: ait_freeVars(&c->cli_vars);
1.8 misho 309: rpc->call_argc ^= rpc->call_argc;
1.10 misho 310: } else {
311: /* reply */
1.25 misho 312: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
1.10 misho 313: }
1.7 misho 314: }
315: }
316:
1.14 misho 317: array_Destroy(&arr);
1.7 misho 318: return NULL;
319: }
320:
321: static void *
322: rxPacket(sched_task_t *task)
323: {
324: rpc_cli_t *c = TASK_ARG(task);
325: rpc_srv_t *s = c->cli_parent;
1.18 misho 326: int len, rlen, noreply, estlen;
1.15 misho 327: #if 0
328: u_short crc;
329: #endif
1.10 misho 330: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1.18 misho 331: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
1.19 misho 332: struct pollfd pfd;
1.21 misho 333: #ifdef TCP_SESSION_TIMEOUT
334: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
335:
336: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
337: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
338: TASK_ARG(task), ts, TASK_ARG(task), 0);
339: #endif
1.7 misho 340:
1.18 misho 341: memset(buf, 0, sizeof(struct tagRPCCall));
1.19 misho 342: rlen = recv(TASK_FD(task), rpc, sizeof(struct tagRPCCall), MSG_PEEK);
1.18 misho 343: if (rlen < sizeof(struct tagRPCCall)) {
1.10 misho 344: /* close connection */
1.13 misho 345: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
346: TASK_ARG(task), 0, NULL, 0);
1.7 misho 347: return NULL;
1.10 misho 348: } else {
1.18 misho 349: estlen = ntohl(rpc->call_len);
350: if (estlen > AIT_LEN(&c->cli_buf))
351: AIT_RE_BUF(&c->cli_buf, estlen);
352: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
1.19 misho 353: buf = AIT_GET_BUF(&c->cli_buf);
354: len = estlen;
1.18 misho 355: }
356:
1.19 misho 357: /* get next part of packet */
358: memset(buf, 0, len);
359: pfd.fd = TASK_FD(task);
360: pfd.events = POLLIN | POLLPRI;
361: for (; len > 0; len -= rlen, buf += rlen) {
362: if ((rlen = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 ||
363: pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
364: if (rlen)
365: LOGERR;
366: else
1.22 misho 367: rpc_SetErr(ETIMEDOUT, "Timeout reached! Client not respond");
1.19 misho 368: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
369: TASK_ARG(task), 0, NULL, 0);
370: return NULL;
371: }
1.18 misho 372: rlen = recv(TASK_FD(task), buf, len, 0);
373: if (rlen == -1) {
374: /* close connection */
375: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
376: TASK_ARG(task), 0, NULL, 0);
1.8 misho 377: return NULL;
1.10 misho 378: }
1.18 misho 379: }
1.22 misho 380: len = estlen;
1.8 misho 381:
1.25 misho 382: /* skip loop packet */
383: if (rpc->call_io & RPC_ACK) {
384: schedReadSelf(task);
385: return NULL;
386: }
387:
1.15 misho 388: #if 0
1.18 misho 389: /* check integrity of packet */
390: crc = ntohs(rpc->call_crc);
391: rpc->call_crc ^= rpc->call_crc;
392: if (crc != crcFletcher16((u_short*) rpc, len / 2)) {
393: rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet");
394: return NULL;
395: }
1.15 misho 396: #endif
1.7 misho 397:
1.18 misho 398: noreply = RPC_CHK_NOREPLY(rpc);
1.7 misho 399:
1.18 misho 400: /* check RPC packet session info */
401: if (rpc_chkPktSession(&rpc->call_session, &s->srv_session)) {
402: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
1.7 misho 403:
1.18 misho 404: rpc->call_argc ^= rpc->call_argc;
405: rpc->call_rep.ret = RPC_ERROR(-1);
406: rpc->call_rep.eno = RPC_ERROR(errno);
407: } else {
408: /* execute RPC call */
409: schedEvent(TASK_ROOT(task), execCall, TASK_ARG(task), (int) noreply, rpc, len);
410: }
1.7 misho 411:
1.18 misho 412: /* send RPC reply */
413: if (!noreply)
414: schedWrite(TASK_ROOT(task), cbProto[s->srv_proto][CB_TXPACKET],
415: TASK_ARG(task), TASK_FD(task), rpc, len);
1.7 misho 416:
417: /* lets get next packet */
1.18 misho 418: schedReadSelf(task);
1.7 misho 419: return NULL;
420: }
421:
1.1 misho 422: static void *
1.10 misho 423: acceptClients(sched_task_t *task)
1.1 misho 424: {
1.10 misho 425: rpc_srv_t *srv = TASK_ARG(task);
426: rpc_cli_t *c = NULL;
1.14 misho 427: socklen_t salen = sizeof(sockaddr_t);
1.21 misho 428: int sock;
429: #ifdef TCP_SESSION_TIMEOUT
430: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
431: #endif
1.7 misho 432:
1.13 misho 433: c = _allocClient(srv, NULL);
1.21 misho 434: if (!c) {
435: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
436: if ((sock = accept(TASK_FD(task), NULL, NULL)) != -1) {
437: shutdown(sock, SHUT_RDWR);
438: close(sock);
439: }
1.10 misho 440: goto end;
1.21 misho 441: }
1.10 misho 442:
443: /* accept client */
444: c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen);
445: if (c->cli_sock == -1) {
446: LOGERR;
447: AIT_FREE_VAL(&c->cli_buf);
1.14 misho 448: array_Del(srv->srv_clients, c->cli_id, 42);
1.10 misho 449: goto end;
1.1 misho 450: } else
1.10 misho 451: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
1.1 misho 452:
1.21 misho 453: #ifdef TCP_SESSION_TIMEOUT
454: /* armed timer for close stateless connection */
455: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
456: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT], c,
457: ts, c, 0);
458: #endif
1.13 misho 459: schedRead(TASK_ROOT(task), cbProto[srv->srv_proto][CB_RXPACKET], c,
460: c->cli_sock, NULL, 0);
1.10 misho 461: end:
462: schedReadSelf(task);
463: return NULL;
464: }
1.5 misho 465:
1.7 misho 466:
1.10 misho 467: static void *
1.13 misho 468: txUDPPacket(sched_task_t *task)
1.10 misho 469: {
470: rpc_cli_t *c = TASK_ARG(task);
471: rpc_srv_t *s = c->cli_parent;
1.13 misho 472: rpc_func_t *f = NULL;
1.18 misho 473: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1.13 misho 474: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
1.22 misho 475: int ret, estlen, wlen = sizeof(struct tagRPCCall);
1.13 misho 476: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
1.22 misho 477: struct pollfd pfd;
1.13 misho 478:
479: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
480: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
481: TASK_ARG(task), ts, TASK_ARG(task), 0);
482:
483: if (rpc->call_argc) {
484: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
485: if (!f) {
486: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
487: rpc->call_argc ^= rpc->call_argc;
488: rpc->call_rep.ret = RPC_ERROR(-1);
489: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
490: } else {
1.22 misho 491: /* calc estimated length */
492: estlen = ait_resideVars(RPC_RETVARS(c)) + wlen;
493: if (estlen > AIT_LEN(&c->cli_buf))
494: AIT_RE_BUF(&c->cli_buf, estlen);
495: buf = AIT_GET_BUF(&c->cli_buf);
496: rpc = (struct tagRPCCall*) buf;
497:
1.25 misho 498: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
1.13 misho 499: /* Go Encapsulate variables */
1.18 misho 500: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
501: RPC_RETVARS(c));
1.13 misho 502: /* Free return values */
1.14 misho 503: ait_freeVars(&c->cli_vars);
1.13 misho 504: if (ret == -1) {
505: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
506: rpc->call_argc ^= rpc->call_argc;
507: rpc->call_rep.ret = RPC_ERROR(-1);
508: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
509: } else
510: wlen += ret;
511: }
512: }
1.7 misho 513:
1.18 misho 514: rpc->call_len = htonl(wlen);
1.25 misho 515: rpc->call_io = RPC_ACK;
1.7 misho 516:
1.13 misho 517: /* calculate CRC */
518: rpc->call_crc ^= rpc->call_crc;
519: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
520:
521: /* send reply */
1.22 misho 522: pfd.fd = TASK_FD(task);
523: pfd.events = POLLOUT;
524: for (; wlen > 0; wlen -= ret, buf += ret) {
525: if ((ret = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 ||
526: pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
527: if (ret)
528: LOGERR;
529: else
530: rpc_SetErr(ETIMEDOUT, "Timeout reached! Client not respond");
531: /* close connection */
532: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
533: TASK_ARG(task), 0, NULL, 0);
534: return NULL;
535: }
536: ret = sendto(TASK_FD(task), buf, MIN(wlen, s->srv_netbuf), MSG_NOSIGNAL,
537: &c->cli_sa.sa, c->cli_sa.sa.sa_len);
538: if (ret == -1) {
539: /* close connection */
540: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
541: TASK_ARG(task), 0, NULL, 0);
542: return NULL;
543: }
1.13 misho 544: }
545:
546: return NULL;
547: }
548:
549: static void *
550: rxUDPPacket(sched_task_t *task)
551: {
552: rpc_srv_t *srv = TASK_ARG(task);
553: rpc_cli_t *c = NULL;
1.22 misho 554: int len, rlen, noreply, estlen;
555: u_short crc;
556: u_char *buf, b[sizeof(struct tagRPCCall)];
557: struct tagRPCCall *rpc = (struct tagRPCCall*) b;
1.14 misho 558: sockaddr_t sa;
559: socklen_t salen;
1.13 misho 560: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
1.22 misho 561: struct pollfd pfd;
1.13 misho 562:
563: /* receive connect packet */
1.14 misho 564: salen = sa.ss.ss_len = sizeof(sockaddr_t);
1.22 misho 565: rlen = recvfrom(TASK_FD(task), b, sizeof b, MSG_PEEK, &sa.sa, &salen);
566: if (rlen < sizeof(struct tagRPCCall)) {
567: rpc_SetErr(ERPCMISMATCH, "Short RPC packet");
1.13 misho 568: goto end;
1.22 misho 569: }
1.13 misho 570:
571: c = _allocClient(srv, &sa);
1.22 misho 572: if (!c) {
573: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
574: usleep(2000); /* blocked client delay */
1.13 misho 575: goto end;
1.22 misho 576: } else {
577: estlen = ntohl(rpc->call_len);
578: if (estlen > AIT_LEN(&c->cli_buf))
579: AIT_RE_BUF(&c->cli_buf, estlen);
580: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
581: buf = AIT_GET_BUF(&c->cli_buf);
582: len = estlen;
583:
1.13 misho 584: c->cli_sock = TASK_FD(task);
585: memcpy(&c->cli_sa, &sa, sizeof c->cli_sa);
1.22 misho 586:
1.13 misho 587: /* armed timer for close stateless connection */
588: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
589: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
590: c, ts, c, 0);
591: }
592:
1.22 misho 593: /* get next part of packet */
594: memset(buf, 0, len);
595: pfd.fd = TASK_FD(task);
596: pfd.events = POLLIN | POLLPRI;
597: for (; len > 0; len -= rlen, buf += rlen) {
598: if ((rlen = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 ||
599: pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
600: if (rlen)
601: LOGERR;
602: else
603: rpc_SetErr(ETIMEDOUT, "Timeout reached! Client not respond");
604: schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
605: c, 0, NULL, 0);
1.24 misho 606: goto end;
1.13 misho 607: }
1.22 misho 608: salen = sa.ss.ss_len = sizeof(sockaddr_t);
609: rlen = recvfrom(TASK_FD(task), buf, len, 0, &sa.sa, &salen);
610: if (rlen == -1) {
611: /* close connection */
612: schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
613: c, 0, NULL, 0);
1.24 misho 614: goto end;
1.13 misho 615: }
1.22 misho 616: if (e_addrcmp(&c->cli_sa, &sa, 42))
617: rlen ^= rlen; /* skip if arrive from different address */
618: }
619: len = estlen;
1.13 misho 620:
1.25 misho 621: /* skip loop packet */
622: if (rpc->call_io & RPC_ACK)
623: goto end;
624:
1.22 misho 625: /* check integrity of packet */
626: crc = ntohs(rpc->call_crc);
627: rpc->call_crc ^= rpc->call_crc;
628: if (crc != crcFletcher16((u_short*) rpc, len / 2)) {
629: rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet");
1.24 misho 630: /* close connection */
631: schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
632: c, 0, NULL, 0);
633: goto end;
634: }
635:
636: noreply = RPC_CHK_NOREPLY(rpc);
637:
638: /* check RPC packet session info */
639: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session)) {
640: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
641:
642: rpc->call_argc ^= rpc->call_argc;
643: rpc->call_rep.ret = RPC_ERROR(-1);
644: rpc->call_rep.eno = RPC_ERROR(errno);
645: } else {
646: /* execute RPC call */
647: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
648: }
649:
650: /* send RPC reply */
651: if (!noreply)
652: schedWrite(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
653: c, TASK_FD(task), rpc, len);
654: end:
655: schedReadSelf(task);
656: return NULL;
657: }
658:
659:
660: static void *
661: txBPFPacket(sched_task_t *task)
662: {
663: rpc_cli_t *c = TASK_ARG(task);
664: rpc_srv_t *s = c->cli_parent;
665: rpc_func_t *f = NULL;
666: u_char *buf = AIT_GET_BUF(&c->cli_buf);
667: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
668: int ret, len, wlen = sizeof(struct tagRPCCall);
669: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
670: struct ether_header *eh;
671: ait_val_t b = AIT_VAL_INIT;
672:
673: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
674: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
675: TASK_ARG(task), ts, TASK_ARG(task), 0);
676:
677: if (rpc->call_argc) {
678: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
679: if (!f) {
680: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
681: rpc->call_argc ^= rpc->call_argc;
682: rpc->call_rep.ret = RPC_ERROR(-1);
683: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
684: } else {
685: /* calc estimated length */
686: len = ait_resideVars(RPC_RETVARS(c)) + wlen;
687: if (len > AIT_LEN(&c->cli_buf))
688: AIT_RE_BUF(&c->cli_buf, len);
689: buf = AIT_GET_BUF(&c->cli_buf);
690: rpc = (struct tagRPCCall*) buf;
691:
1.25 misho 692: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
1.24 misho 693: /* Go Encapsulate variables */
694: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
695: RPC_RETVARS(c));
696: /* Free return values */
697: ait_freeVars(&RPC_RETVARS(c));
698: if (ret == -1) {
699: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
700: rpc->call_argc ^= rpc->call_argc;
701: rpc->call_rep.ret = RPC_ERROR(-1);
702: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
703: } else
704: wlen += ret;
705: }
706: }
707:
708: rpc->call_len = htonl(wlen);
1.25 misho 709: rpc->call_io = RPC_ACK;
1.24 misho 710:
711: /* calculate CRC */
712: rpc->call_crc ^= rpc->call_crc;
713: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
714:
715: /* send reply */
716: AIT_SET_BUF(&b, NULL, MIN(wlen, s->srv_netbuf) + ETHER_HDR_LEN);
717: eh = (struct ether_header*) AIT_GET_BUF(&b);
718: memcpy(eh->ether_dhost, LLADDR(&c->cli_sa.sdl), ETHER_ADDR_LEN);
719: eh->ether_type = htons(RPC_DEFPORT);
720: memcpy(eh + 1, buf, MIN(wlen, s->srv_netbuf));
721:
722: ret = write(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b));
723: AIT_FREE_VAL(&b);
724: if (ret == -1) {
725: /* close connection */
726: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
727: TASK_ARG(task), 0, NULL, 0);
1.22 misho 728: return NULL;
729: }
1.13 misho 730:
1.24 misho 731: return NULL;
732: }
733:
734: static void *
735: rxBPFPacket(sched_task_t *task)
736: {
737: rpc_srv_t *srv = TASK_ARG(task);
738: rpc_cli_t *c = NULL;
739: int len, rlen, noreply;
740: u_short crc;
741: struct tagRPCCall *rpc;
742: sockaddr_t sa;
743: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
744: struct bpf_hdr *h;
745: struct ether_header *eh;
746: ait_val_t b = AIT_VAL_INIT;
747:
748: /* receive connect packet */
749: AIT_SET_BUF(&b, NULL, srv->srv_netbuf);
750: rlen = read(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b));
751: h = (struct bpf_hdr*) AIT_GET_BUF(&b);
752: rlen -= h->bh_hdrlen;
753: if (rlen < h->bh_datalen || h->bh_caplen != h->bh_datalen ||
754: rlen < ETHER_HDR_LEN + sizeof(struct tagRPCCall)) {
755: rpc_SetErr(ERPCMISMATCH, "Short RPC packet");
756: goto end;
757: } else {
758: rlen = h->bh_caplen;
759: eh = (struct ether_header*) (AIT_GET_BUF(&b) + h->bh_hdrlen);
760: rlen -= ETHER_HDR_LEN;
761: rpc = (struct tagRPCCall*) (eh + 1);
1.25 misho 762:
763: #if 0
764: /* skip loop packet */
765: if (rpc->call_io & RPC_ACK)
766: goto end;
767: #endif
768:
1.24 misho 769: if (eh->ether_type != ntohs(RPC_DEFPORT))
770: goto end;
771: else
772: e_getlinkbymac((const ether_addr_t*) eh->ether_shost, &sa);
773: }
774:
775: c = _allocClient(srv, &sa);
776: if (!c) {
777: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
778: usleep(2000); /* blocked client delay */
779: goto end;
780: } else {
781: len = ntohl(rpc->call_len);
782: if (len > AIT_LEN(&c->cli_buf))
783: AIT_RE_BUF(&c->cli_buf, len);
784: memcpy(AIT_GET_BUF(&c->cli_buf), rpc, AIT_LEN(&c->cli_buf));
785: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
786:
787: c->cli_sock = TASK_FD(task);
788: memcpy(&c->cli_sa, &sa, sizeof c->cli_sa);
789:
790: /* armed timer for close stateless connection */
791: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
792: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
793: c, ts, c, 0);
794: }
795:
796: /* check integrity of packet */
797: crc = ntohs(rpc->call_crc);
798: rpc->call_crc ^= rpc->call_crc;
799: if (crc != crcFletcher16((u_short*) rpc, len / 2)) {
800: rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet");
801: /* close connection */
802: schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
803: c, 0, NULL, 0);
804: goto end;
805: }
806:
1.22 misho 807: noreply = RPC_CHK_NOREPLY(rpc);
1.18 misho 808:
1.22 misho 809: /* check RPC packet session info */
810: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session)) {
811: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
1.13 misho 812:
1.22 misho 813: rpc->call_argc ^= rpc->call_argc;
814: rpc->call_rep.ret = RPC_ERROR(-1);
815: rpc->call_rep.eno = RPC_ERROR(errno);
816: } else {
817: /* execute RPC call */
818: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
819: }
1.13 misho 820:
1.22 misho 821: /* send RPC reply */
822: if (!noreply)
1.24 misho 823: schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
1.22 misho 824: c, TASK_FD(task), rpc, len);
1.13 misho 825: end:
1.24 misho 826: AIT_FREE_VAL(&b);
1.13 misho 827: schedReadSelf(task);
828: return NULL;
829: }
830:
1.25 misho 831:
832: static void *
833: txEXTPacket(sched_task_t *task)
834: {
835: rpc_cli_t *c = TASK_ARG(task);
836: rpc_srv_t *s = c->cli_parent;
837: rpc_func_t *f = NULL;
838: u_char *buf = AIT_GET_BUF(&c->cli_buf);
839: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
840: int ret, len, wlen = sizeof(struct tagRPCCall);
841: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
842:
843: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
844: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
845: TASK_ARG(task), ts, TASK_ARG(task), 0);
846:
847: if (rpc->call_argc) {
848: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
849: if (!f) {
850: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
851: rpc->call_argc ^= rpc->call_argc;
852: rpc->call_rep.ret = RPC_ERROR(-1);
853: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
854: } else {
855: /* calc estimated length */
856: len = ait_resideVars(RPC_RETVARS(c)) + wlen;
857: if (len > AIT_LEN(&c->cli_buf))
858: AIT_RE_BUF(&c->cli_buf, len);
859: buf = AIT_GET_BUF(&c->cli_buf);
860: rpc = (struct tagRPCCall*) buf;
861:
862: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
863: /* Go Encapsulate variables */
864: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
865: RPC_RETVARS(c));
866: /* Free return values */
867: ait_freeVars(&RPC_RETVARS(c));
868: if (ret == -1) {
869: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
870: rpc->call_argc ^= rpc->call_argc;
871: rpc->call_rep.ret = RPC_ERROR(-1);
872: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
873: } else
874: wlen += ret;
875: }
876: }
877:
878: rpc->call_len = htonl(wlen);
879: rpc->call_io = RPC_ACK;
880:
881: /* send reply */
882: ret = write(TASK_FD(task), buf, MIN(wlen, s->srv_netbuf));
883: if (ret == -1) {
884: /* close connection */
885: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
886: TASK_ARG(task), 0, NULL, 0);
887: return NULL;
888: }
889:
890: return NULL;
891: }
892:
893: static void *
894: rxEXTPacket(sched_task_t *task)
895: {
896: rpc_srv_t *srv = TASK_ARG(task);
897: rpc_cli_t *c = NULL;
898: int len, rlen, noreply;
899: struct tagRPCCall *rpc;
900: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
901: ait_val_t b = AIT_VAL_INIT;
902: sockaddr_t sa;
903:
904: memset(&sa, 0, sizeof sa);
905: /* receive connect packet */
906: AIT_SET_BUF(&b, NULL, srv->srv_netbuf);
907: rlen = read(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b));
908: if (rlen < sizeof(struct tagRPCCall)) {
909: rpc_SetErr(ERPCMISMATCH, "Short RPC packet");
910: goto end;
911: } else {
912: rpc = (struct tagRPCCall*) AIT_GET_BUF(&b);
913:
914: /* skip loop packet */
915: if (rpc->call_io & RPC_ACK)
916: goto end;
917: }
918:
919: c = _allocClient(srv, &sa);
920: if (!c) {
921: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
922: usleep(2000); /* blocked client delay */
923: goto end;
924: } else {
925: len = ntohl(rpc->call_len);
926: if (len > AIT_LEN(&c->cli_buf))
927: AIT_RE_BUF(&c->cli_buf, len);
928: memcpy(AIT_GET_BUF(&c->cli_buf), rpc, AIT_LEN(&c->cli_buf));
929: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
930:
931: c->cli_sock = TASK_FD(task);
932:
933: /* armed timer for close stateless connection */
934: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
935: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
936: c, ts, c, 0);
937: }
938:
939: noreply = RPC_CHK_NOREPLY(rpc);
940:
941: /* check RPC packet session info */
942: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session)) {
943: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
944:
945: rpc->call_argc ^= rpc->call_argc;
946: rpc->call_rep.ret = RPC_ERROR(-1);
947: rpc->call_rep.eno = RPC_ERROR(errno);
948: } else {
949: /* execute RPC call */
950: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
951: }
952:
953: /* send RPC reply */
954: if (!noreply)
955: schedWrite(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
956: c, TASK_FD(task), rpc, len);
957: end:
958: AIT_FREE_VAL(&b);
959: schedReadSelf(task);
960: return NULL;
961: }
962:
1.13 misho 963: /* ------------------------------------------------------ */
964:
1.16 misho 965: void
1.13 misho 966: rpc_freeBLOBCli(rpc_cli_t * __restrict c)
967: {
968: rpc_srv_t *s = c->cli_parent;
969:
970: schedCancelby(s->srv_blob.root, taskMAX, CRITERIA_ARG, c, NULL);
1.10 misho 971:
972: /* free buffer */
973: AIT_FREE_VAL(&c->cli_buf);
974:
1.14 misho 975: array_Del(s->srv_blob.clients, c->cli_id, 0);
1.10 misho 976: if (c)
1.14 misho 977: e_free(c);
1.13 misho 978: }
979:
980:
981: static void *
982: closeBLOBClient(sched_task_t *task)
983: {
984: int sock = ((rpc_cli_t*) TASK_ARG(task))->cli_sock;
985:
986: rpc_freeBLOBCli(TASK_ARG(task));
987:
988: /* close client socket */
989: shutdown(sock, SHUT_RDWR);
990: close(sock);
1.7 misho 991: return NULL;
992: }
993:
994: static void *
995: txBLOB(sched_task_t *task)
996: {
1.10 misho 997: rpc_cli_t *c = TASK_ARG(task);
998: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1.7 misho 999: int wlen = sizeof(struct tagBLOBHdr);
1000:
1001: /* send reply */
1.10 misho 1002: wlen = send(TASK_FD(task), buf, wlen, MSG_NOSIGNAL);
1003: if (wlen == -1 || wlen != sizeof(struct tagBLOBHdr)) {
1004: /* close blob connection */
1005: schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0);
1006: }
1.7 misho 1007:
1008: return NULL;
1009: }
1.4 misho 1010:
1.7 misho 1011: static void *
1012: rxBLOB(sched_task_t *task)
1013: {
1014: rpc_cli_t *c = TASK_ARG(task);
1015: rpc_srv_t *s = c->cli_parent;
1016: rpc_blob_t *b;
1.10 misho 1017: struct tagBLOBHdr blob;
1.7 misho 1018: int rlen;
1019:
1.10 misho 1020: memset(&blob, 0, sizeof blob);
1021: rlen = recv(TASK_FD(task), &blob, sizeof blob, 0);
1022: if (rlen < 1) {
1023: /* close blob connection */
1024: schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0);
1.7 misho 1025: return NULL;
1026: }
1.5 misho 1027:
1.10 misho 1028: /* check BLOB packet */
1029: if (rlen < sizeof(struct tagBLOBHdr)) {
1030: rpc_SetErr(ERPCMISMATCH, "Short BLOB packet");
1.6 misho 1031:
1.10 misho 1032: schedReadSelf(task);
1.7 misho 1033: return NULL;
1034: }
1.1 misho 1035:
1.7 misho 1036: /* check RPC packet session info */
1.15 misho 1037: if (rpc_chkPktSession(&blob.hdr_session, &s->srv_session)) {
1.7 misho 1038: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
1.10 misho 1039: blob.hdr_cmd = error;
1.7 misho 1040: goto end;
1041: }
1042:
1043: /* Go to proceed packet ... */
1.10 misho 1044: switch (blob.hdr_cmd) {
1.7 misho 1045: case get:
1.10 misho 1046: if (!(b = rpc_srv_getBLOB(s, ntohl(blob.hdr_var)))) {
1047: rpc_SetErr(EINVAL, "Var=%x not found", ntohl(blob.hdr_var));
1048: blob.hdr_cmd = no;
1049: blob.hdr_ret = RPC_ERROR(-1);
1.7 misho 1050: break;
1051: } else
1.10 misho 1052: blob.hdr_len = htonl(b->blob_len);
1.5 misho 1053:
1.7 misho 1054: if (rpc_srv_blobMap(s, b) != -1) {
1055: /* deliver BLOB variable to client */
1.10 misho 1056: blob.hdr_ret = htonl(rpc_srv_sendBLOB(c, b));
1.7 misho 1057: rpc_srv_blobUnmap(b);
1058: } else {
1.10 misho 1059: blob.hdr_cmd = error;
1060: blob.hdr_ret = RPC_ERROR(-1);
1.7 misho 1061: }
1062: break;
1063: case set:
1.17 misho 1064: if ((b = rpc_srv_registerBLOB(s, ntohl(blob.hdr_len),
1065: ntohl(blob.hdr_ret)))) {
1.7 misho 1066: /* set new BLOB variable for reply :) */
1.10 misho 1067: blob.hdr_var = htonl(b->blob_var);
1.7 misho 1068:
1069: /* receive BLOB from client */
1.10 misho 1070: blob.hdr_ret = htonl(rpc_srv_recvBLOB(c, b));
1.7 misho 1071: rpc_srv_blobUnmap(b);
1.5 misho 1072: } else {
1.10 misho 1073: blob.hdr_cmd = error;
1074: blob.hdr_ret = RPC_ERROR(-1);
1.7 misho 1075: }
1076: break;
1077: case unset:
1.11 misho 1078: if (rpc_srv_unregisterBLOB(s, ntohl(blob.hdr_var)) == -1) {
1.10 misho 1079: blob.hdr_cmd = error;
1080: blob.hdr_ret = RPC_ERROR(-1);
1.1 misho 1081: }
1082: break;
1.7 misho 1083: default:
1.10 misho 1084: rpc_SetErr(EPROCUNAVAIL, "Unsupported BLOB command %d", blob.hdr_cmd);
1085: blob.hdr_cmd = error;
1086: blob.hdr_ret = RPC_ERROR(-1);
1.7 misho 1087: }
1.1 misho 1088:
1.7 misho 1089: end:
1.10 misho 1090: memcpy(AIT_ADDR(&c->cli_buf), &blob, sizeof blob);
1091: schedWrite(TASK_ROOT(task), txBLOB, TASK_ARG(task), TASK_FD(task), NULL, 0);
1092: schedReadSelf(task);
1.7 misho 1093: return NULL;
1.2 misho 1094: }
1095:
1096: static void *
1.17 misho 1097: flushBLOB(sched_task_t *task)
1098: {
1.23 misho 1099: uintptr_t sigArg = atomic_load_acq_ptr(&_glSigArg);
1100: rpc_srv_t *srv = sigArg ? (void*) sigArg : TASK_ARG(task);
1.17 misho 1101: rpc_blob_t *b, *tmp;
1102:
1103: TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) {
1104: TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node);
1105:
1106: rpc_srv_blobFree(srv, b);
1107: e_free(b);
1108: }
1109:
1.23 misho 1110: if (!schedSignalSelf(task)) {
1111: /* disabled kqueue support in libaitsched */
1112: struct sigaction sa;
1113:
1114: memset(&sa, 0, sizeof sa);
1115: sigemptyset(&sa.sa_mask);
1116: sa.sa_handler = (void (*)(int)) flushBLOB;
1117: sa.sa_flags = SA_RESTART | SA_RESETHAND;
1118: sigaction(SIGFBLOB, &sa, NULL);
1119: }
1120:
1.17 misho 1121: return NULL;
1122: }
1123:
1124: static void *
1.10 misho 1125: acceptBLOBClients(sched_task_t *task)
1.2 misho 1126: {
1.10 misho 1127: rpc_srv_t *srv = TASK_ARG(task);
1128: rpc_cli_t *c = NULL;
1129: register int i;
1.14 misho 1130: socklen_t salen = sizeof(sockaddr_t);
1.21 misho 1131: int sock;
1.12 misho 1132: #ifdef TCP_NOPUSH
1133: int n = 1;
1134: #endif
1.7 misho 1135:
1.10 misho 1136: /* check free slots for connect */
1.14 misho 1137: for (i = 0; i < array_Size(srv->srv_blob.clients) &&
1138: (c = array(srv->srv_blob.clients, i, rpc_cli_t*)); i++);
1.21 misho 1139: if (c) { /* no more free slots! */
1140: EVERBOSE(1, "BLOB client quota exceeded! Connection will be shutdown!\n");
1141: if ((sock = accept(TASK_FD(task), NULL, NULL)) != -1) {
1142: shutdown(sock, SHUT_RDWR);
1143: close(sock);
1144: }
1.10 misho 1145: goto end;
1.21 misho 1146: }
1147:
1.14 misho 1148: c = e_malloc(sizeof(rpc_cli_t));
1.10 misho 1149: if (!c) {
1.7 misho 1150: LOGERR;
1.10 misho 1151: srv->srv_kill = srv->srv_blob.kill = 1;
1.7 misho 1152: return NULL;
1153: } else {
1.10 misho 1154: memset(c, 0, sizeof(rpc_cli_t));
1.14 misho 1155: array_Set(srv->srv_blob.clients, i, c);
1.10 misho 1156: c->cli_id = i;
1157: c->cli_parent = srv;
1.7 misho 1158: }
1.4 misho 1159:
1.10 misho 1160: /* alloc empty buffer */
1.14 misho 1161: AIT_SET_BUFSIZ(&c->cli_buf, 0, srv->srv_netbuf);
1.2 misho 1162:
1.10 misho 1163: /* accept client */
1164: c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen);
1165: if (c->cli_sock == -1) {
1166: LOGERR;
1167: AIT_FREE_VAL(&c->cli_buf);
1.14 misho 1168: array_Del(srv->srv_blob.clients, i, 42);
1.10 misho 1169: goto end;
1.12 misho 1170: } else {
1171: #ifdef TCP_NOPUSH
1172: setsockopt(c->cli_sock, IPPROTO_TCP, TCP_NOPUSH, &n, sizeof n);
1173: #endif
1.10 misho 1174: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
1.12 misho 1175: }
1.2 misho 1176:
1.10 misho 1177: schedRead(TASK_ROOT(task), rxBLOB, c, c->cli_sock, NULL, 0);
1178: end:
1179: schedReadSelf(task);
1.7 misho 1180: return NULL;
1.1 misho 1181: }
1182:
1.10 misho 1183: /* ------------------------------------------------------ */
1.1 misho 1184:
1185: /*
1.7 misho 1186: * rpc_srv_initBLOBServer() - Init & create BLOB Server
1187: *
1.4 misho 1188: * @srv = RPC server instance
1.2 misho 1189: * @Port = Port for bind server, if Port == 0 default port is selected
1190: * @diskDir = Disk place for BLOB file objects
1191: * return: -1 == error or 0 bind and created BLOB server instance
1192: */
1193: int
1194: rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, u_short Port, const char *diskDir)
1195: {
1196: int n = 1;
1197:
1.10 misho 1198: if (!srv || srv->srv_kill) {
1.7 misho 1199: rpc_SetErr(EINVAL, "Invalid parameters can`t init BLOB server");
1.2 misho 1200: return -1;
1201: }
1202:
1203: memset(&srv->srv_blob, 0, sizeof srv->srv_blob);
1204: if (access(diskDir, R_OK | W_OK) == -1) {
1205: LOGERR;
1206: return -1;
1207: } else
1.7 misho 1208: AIT_SET_STR(&srv->srv_blob.dir, diskDir);
1.2 misho 1209:
1.10 misho 1210: /* init blob list */
1211: TAILQ_INIT(&srv->srv_blob.blobs);
1212:
1.2 misho 1213: srv->srv_blob.server.cli_parent = srv;
1.4 misho 1214:
1.14 misho 1215: memcpy(&srv->srv_blob.server.cli_sa, &srv->srv_server.cli_sa, sizeof(sockaddr_t));
1.10 misho 1216: switch (srv->srv_blob.server.cli_sa.sa.sa_family) {
1.4 misho 1217: case AF_INET:
1.10 misho 1218: srv->srv_blob.server.cli_sa.sin.sin_port =
1219: htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin.sin_port) + 1);
1.4 misho 1220: break;
1221: case AF_INET6:
1.10 misho 1222: srv->srv_blob.server.cli_sa.sin6.sin6_port =
1223: htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin6.sin6_port) + 1);
1.4 misho 1224: break;
1225: case AF_LOCAL:
1.10 misho 1226: strlcat(srv->srv_blob.server.cli_sa.sun.sun_path, ".blob",
1227: sizeof srv->srv_blob.server.cli_sa.sun.sun_path);
1.4 misho 1228: break;
1229: default:
1.7 misho 1230: AIT_FREE_VAL(&srv->srv_blob.dir);
1.4 misho 1231: return -1;
1.2 misho 1232: }
1233:
1.4 misho 1234: /* create BLOB server socket */
1.6 misho 1235: srv->srv_blob.server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, SOCK_STREAM, 0);
1.2 misho 1236: if (srv->srv_blob.server.cli_sock == -1) {
1237: LOGERR;
1.7 misho 1238: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 1239: return -1;
1240: }
1241: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
1242: LOGERR;
1243: close(srv->srv_blob.server.cli_sock);
1.7 misho 1244: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 1245: return -1;
1246: }
1.5 misho 1247: n = srv->srv_netbuf;
1248: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
1249: LOGERR;
1250: close(srv->srv_blob.server.cli_sock);
1.7 misho 1251: AIT_FREE_VAL(&srv->srv_blob.dir);
1.5 misho 1252: return -1;
1253: }
1254: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
1255: LOGERR;
1256: close(srv->srv_blob.server.cli_sock);
1.7 misho 1257: AIT_FREE_VAL(&srv->srv_blob.dir);
1.5 misho 1258: return -1;
1259: }
1.6 misho 1260: if (bind(srv->srv_blob.server.cli_sock, &srv->srv_blob.server.cli_sa.sa,
1261: srv->srv_blob.server.cli_sa.sa.sa_len) == -1) {
1.2 misho 1262: LOGERR;
1263: close(srv->srv_blob.server.cli_sock);
1.7 misho 1264: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 1265: return -1;
1.13 misho 1266: } else
1267: fcntl(srv->srv_blob.server.cli_sock, F_SETFL,
1268: fcntl(srv->srv_blob.server.cli_sock, F_GETFL) | O_NONBLOCK);
1269:
1.2 misho 1270:
1.10 misho 1271: /* allocate pool for concurent blob clients */
1.14 misho 1272: srv->srv_blob.clients = array_Init(array_Size(srv->srv_clients));
1.2 misho 1273: if (!srv->srv_blob.clients) {
1.14 misho 1274: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1.2 misho 1275: close(srv->srv_blob.server.cli_sock);
1.7 misho 1276: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 1277: return -1;
1.10 misho 1278: }
1.2 misho 1279:
1.10 misho 1280: /* init blob scheduler */
1281: srv->srv_blob.root = schedBegin();
1282: if (!srv->srv_blob.root) {
1283: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1.14 misho 1284: array_Destroy(&srv->srv_blob.clients);
1.10 misho 1285: close(srv->srv_blob.server.cli_sock);
1286: AIT_FREE_VAL(&srv->srv_blob.dir);
1287: return -1;
1288: }
1.2 misho 1289:
1290: return 0;
1291: }
1292:
1293: /*
1.7 misho 1294: * rpc_srv_endBLOBServer() - Destroy BLOB server, close all opened sockets and free resources
1295: *
1.2 misho 1296: * @srv = RPC Server instance
1297: * return: none
1298: */
1.16 misho 1299: void
1.2 misho 1300: rpc_srv_endBLOBServer(rpc_srv_t * __restrict srv)
1301: {
1.10 misho 1302: if (!srv)
1.2 misho 1303: return;
1304:
1.10 misho 1305: srv->srv_blob.kill = 1;
1.17 misho 1306:
1307: schedEnd(&srv->srv_blob.root);
1.2 misho 1308: }
1309:
1310: /*
1.10 misho 1311: * rpc_srv_loopBLOBServer() - Execute Main BLOB server loop and wait for clients requests
1.7 misho 1312: *
1.2 misho 1313: * @srv = RPC Server instance
1314: * return: -1 error or 0 ok, infinite loop ...
1315: */
1316: int
1.10 misho 1317: rpc_srv_loopBLOBServer(rpc_srv_t * __restrict srv)
1.2 misho 1318: {
1.10 misho 1319: rpc_cli_t *c;
1.2 misho 1320: register int i;
1.10 misho 1321: rpc_blob_t *b, *tmp;
1322: struct timespec ts = { RPC_SCHED_POLLING, 0 };
1.2 misho 1323:
1.10 misho 1324: if (!srv || srv->srv_kill) {
1.7 misho 1325: rpc_SetErr(EINVAL, "Invalid parameter can`t start BLOB server");
1.2 misho 1326: return -1;
1327: }
1328:
1.14 misho 1329: if (listen(srv->srv_blob.server.cli_sock, array_Size(srv->srv_blob.clients)) == -1) {
1.2 misho 1330: LOGERR;
1331: return -1;
1.10 misho 1332: }
1333:
1.23 misho 1334: if (!schedSignal(srv->srv_blob.root, flushBLOB, srv, SIGFBLOB, NULL, 0)) {
1335: /* disabled kqueue support in libaitsched */
1336: struct sigaction sa;
1337:
1338: atomic_store_rel_ptr(&_glSigArg, (uintptr_t) srv);
1339:
1340: memset(&sa, 0, sizeof sa);
1341: sigemptyset(&sa.sa_mask);
1342: sa.sa_handler = (void (*)(int)) flushBLOB;
1343: sa.sa_flags = SA_RESTART | SA_RESETHAND;
1344: sigaction(SIGFBLOB, &sa, NULL);
1345: }
1346:
1.10 misho 1347: if (!schedRead(srv->srv_blob.root, acceptBLOBClients, srv,
1348: srv->srv_blob.server.cli_sock, NULL, 0)) {
1349: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1350: return -1;
1351: }
1.2 misho 1352:
1.10 misho 1353: schedPolling(srv->srv_blob.root, &ts, NULL);
1354: /* main rpc loop */
1355: schedRun(srv->srv_blob.root, &srv->srv_blob.kill);
1.7 misho 1356:
1.17 misho 1357: /* detach blobs */
1358: TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) {
1359: TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node);
1360:
1361: rpc_srv_blobFree(srv, b);
1362: e_free(b);
1363: }
1364:
1.10 misho 1365: /* close all clients connections & server socket */
1.14 misho 1366: for (i = 0; i < array_Size(srv->srv_blob.clients); i++) {
1367: c = array(srv->srv_blob.clients, i, rpc_cli_t*);
1.10 misho 1368: if (c) {
1369: shutdown(c->cli_sock, SHUT_RDWR);
1370: close(c->cli_sock);
1371:
1372: schedCancelby(srv->srv_blob.root, taskMAX, CRITERIA_ARG, c, NULL);
1373: AIT_FREE_VAL(&c->cli_buf);
1.2 misho 1374: }
1.14 misho 1375: array_Del(srv->srv_blob.clients, i, 42);
1.10 misho 1376: }
1.14 misho 1377: array_Destroy(&srv->srv_blob.clients);
1.2 misho 1378:
1.10 misho 1379: close(srv->srv_blob.server.cli_sock);
1.2 misho 1380:
1.10 misho 1381: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 1382: return 0;
1383: }
1384:
1385:
1386: /*
1.7 misho 1387: * rpc_srv_initServer() - Init & create RPC Server
1388: *
1.15 misho 1389: * @InstID = Instance for authentication & recognition
1.1 misho 1390: * @concurentClients = Concurent clients at same time to this server
1.10 misho 1391: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
1.4 misho 1392: * @csHost = Host name or address for bind server, if NULL any address
1.1 misho 1393: * @Port = Port for bind server, if Port == 0 default port is selected
1.13 misho 1394: * @proto = Protocol, if == 0 choose SOCK_STREAM
1.1 misho 1395: * return: NULL == error or !=NULL bind and created RPC server instance
1396: */
1397: rpc_srv_t *
1.15 misho 1398: rpc_srv_initServer(u_char InstID, int concurentClients, int netBuf,
1399: const char *csHost, u_short Port, int proto)
1.1 misho 1400: {
1.10 misho 1401: int n = 1;
1.1 misho 1402: rpc_srv_t *srv = NULL;
1.14 misho 1403: sockaddr_t sa = E_SOCKADDR_INIT;
1.1 misho 1404:
1.25 misho 1405: if (!concurentClients || (proto < 0 || proto > SOCK_RAW)) {
1.10 misho 1406: rpc_SetErr(EINVAL, "Invalid parameters can`t init RPC server");
1.1 misho 1407: return NULL;
1408: }
1.14 misho 1409: if (!e_gethostbyname(csHost, Port, &sa))
1.10 misho 1410: return NULL;
1.1 misho 1411: if (!Port)
1412: Port = RPC_DEFPORT;
1.13 misho 1413: if (!proto)
1414: proto = SOCK_STREAM;
1.10 misho 1415: if (netBuf < RPC_MIN_BUFSIZ)
1.5 misho 1416: netBuf = BUFSIZ;
1.7 misho 1417: else
1.14 misho 1418: netBuf = E_ALIGN(netBuf, 2); /* align netBuf length */
1.10 misho 1419:
1420: #ifdef HAVE_SRANDOMDEV
1421: srandomdev();
1422: #else
1423: time_t tim;
1424:
1425: srandom((time(&tim) ^ getpid()));
1426: #endif
1.1 misho 1427:
1.14 misho 1428: srv = e_malloc(sizeof(rpc_srv_t));
1.1 misho 1429: if (!srv) {
1430: LOGERR;
1431: return NULL;
1432: } else
1433: memset(srv, 0, sizeof(rpc_srv_t));
1434:
1.13 misho 1435: srv->srv_proto = proto;
1.5 misho 1436: srv->srv_netbuf = netBuf;
1.1 misho 1437: srv->srv_session.sess_version = RPC_VERSION;
1.15 misho 1438: srv->srv_session.sess_instance = InstID;
1.1 misho 1439:
1440: srv->srv_server.cli_parent = srv;
1.10 misho 1441: memcpy(&srv->srv_server.cli_sa, &sa, sizeof srv->srv_server.cli_sa);
1442:
1.12 misho 1443: /* init functions */
1444: pthread_mutex_init(&srv->srv_funcs.mtx, NULL);
1445: SLIST_INIT(&srv->srv_funcs);
1446: AVL_INIT(&srv->srv_funcs);
1.10 misho 1447:
1448: /* init scheduler */
1449: srv->srv_root = schedBegin();
1450: if (!srv->srv_root) {
1451: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1.12 misho 1452: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1.14 misho 1453: e_free(srv);
1.10 misho 1454: return NULL;
1455: }
1456:
1457: /* init pool for clients */
1.14 misho 1458: srv->srv_clients = array_Init(concurentClients);
1.10 misho 1459: if (!srv->srv_clients) {
1.14 misho 1460: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1.10 misho 1461: schedEnd(&srv->srv_root);
1.12 misho 1462: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1.14 misho 1463: e_free(srv);
1.10 misho 1464: return NULL;
1465: }
1.4 misho 1466:
1467: /* create server socket */
1.25.2.1! misho 1468: srv->srv_server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family,
! 1469: srv->srv_proto, srv->srv_proto == SOCK_RAW ? IPPROTO_ERPC : 0);
1.1 misho 1470: if (srv->srv_server.cli_sock == -1) {
1471: LOGERR;
1.14 misho 1472: array_Destroy(&srv->srv_clients);
1.10 misho 1473: schedEnd(&srv->srv_root);
1.12 misho 1474: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1.14 misho 1475: e_free(srv);
1.1 misho 1476: return NULL;
1477: }
1478: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
1479: LOGERR;
1.10 misho 1480: goto err;
1.1 misho 1481: }
1.5 misho 1482: n = srv->srv_netbuf;
1483: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
1484: LOGERR;
1.10 misho 1485: goto err;
1.5 misho 1486: }
1487: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
1488: LOGERR;
1.10 misho 1489: goto err;
1.5 misho 1490: }
1.6 misho 1491: if (bind(srv->srv_server.cli_sock, &srv->srv_server.cli_sa.sa,
1492: srv->srv_server.cli_sa.sa.sa_len) == -1) {
1.1 misho 1493: LOGERR;
1.10 misho 1494: goto err;
1.13 misho 1495: } else
1496: fcntl(srv->srv_server.cli_sock, F_SETFL,
1497: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
1.1 misho 1498:
1.10 misho 1499: rpc_register_srvPing(srv);
1.8 misho 1500:
1.1 misho 1501: return srv;
1.10 misho 1502: err: /* error condition */
1503: close(srv->srv_server.cli_sock);
1.14 misho 1504: array_Destroy(&srv->srv_clients);
1.10 misho 1505: schedEnd(&srv->srv_root);
1.12 misho 1506: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1.14 misho 1507: e_free(srv);
1.10 misho 1508: return NULL;
1.1 misho 1509: }
1510:
1511: /*
1.7 misho 1512: * rpc_srv_endServer() - Destroy RPC server, close all opened sockets and free resources
1513: *
1.6 misho 1514: * @psrv = RPC Server instance
1.1 misho 1515: * return: none
1516: */
1.16 misho 1517: void
1.6 misho 1518: rpc_srv_endServer(rpc_srv_t ** __restrict psrv)
1.1 misho 1519: {
1.10 misho 1520: if (!psrv || !*psrv)
1.1 misho 1521: return;
1522:
1.10 misho 1523: /* if send kill to blob server */
1.17 misho 1524: rpc_srv_endBLOBServer(*psrv);
1.1 misho 1525:
1.10 misho 1526: (*psrv)->srv_kill = 1;
1527: sleep(RPC_SCHED_POLLING);
1.2 misho 1528:
1.17 misho 1529: schedEnd(&(*psrv)->srv_root);
1530:
1.12 misho 1531: pthread_mutex_destroy(&(*psrv)->srv_funcs.mtx);
1.14 misho 1532: e_free(*psrv);
1.6 misho 1533: *psrv = NULL;
1.1 misho 1534: }
1535:
1536: /*
1.7 misho 1537: * rpc_srv_loopServer() - Execute Main server loop and wait for clients requests
1538: *
1.1 misho 1539: * @srv = RPC Server instance
1540: * return: -1 error or 0 ok, infinite loop ...
1541: */
1542: int
1.5 misho 1543: rpc_srv_loopServer(rpc_srv_t * __restrict srv)
1.1 misho 1544: {
1.10 misho 1545: rpc_cli_t *c;
1.1 misho 1546: register int i;
1.12 misho 1547: rpc_func_t *f;
1.10 misho 1548: struct timespec ts = { RPC_SCHED_POLLING, 0 };
1.1 misho 1549:
1550: if (!srv) {
1.10 misho 1551: rpc_SetErr(EINVAL, "Invalid parameter can`t start RPC server");
1.1 misho 1552: return -1;
1553: }
1554:
1.13 misho 1555: if (srv->srv_proto == SOCK_STREAM)
1.14 misho 1556: if (listen(srv->srv_server.cli_sock, array_Size(srv->srv_clients)) == -1) {
1.13 misho 1557: LOGERR;
1558: return -1;
1559: }
1.1 misho 1560:
1.13 misho 1561: if (!schedRead(srv->srv_root, cbProto[srv->srv_proto][CB_ACCEPTCLIENT], srv,
1562: srv->srv_server.cli_sock, NULL, 0)) {
1.10 misho 1563: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1564: return -1;
1565: }
1.7 misho 1566:
1.10 misho 1567: schedPolling(srv->srv_root, &ts, NULL);
1.7 misho 1568: /* main rpc loop */
1.10 misho 1569: schedRun(srv->srv_root, &srv->srv_kill);
1570:
1571: /* close all clients connections & server socket */
1.14 misho 1572: for (i = 0; i < array_Size(srv->srv_clients); i++) {
1573: c = array(srv->srv_clients, i, rpc_cli_t*);
1.10 misho 1574: if (c) {
1.24 misho 1575: if (srv->srv_proto == SOCK_STREAM) {
1576: shutdown(c->cli_sock, SHUT_RDWR);
1577: close(c->cli_sock);
1578: }
1.10 misho 1579:
1580: schedCancelby(srv->srv_root, taskMAX, CRITERIA_ARG, c, NULL);
1.14 misho 1581: ait_freeVars(&RPC_RETVARS(c));
1.10 misho 1582: AIT_FREE_VAL(&c->cli_buf);
1.1 misho 1583: }
1.14 misho 1584: array_Del(srv->srv_clients, i, 42);
1.10 misho 1585: }
1.14 misho 1586: array_Destroy(&srv->srv_clients);
1.2 misho 1587:
1.25 misho 1588: if (srv->srv_proto != SOCK_EXT)
1589: close(srv->srv_server.cli_sock);
1.2 misho 1590:
1.10 misho 1591: /* detach exported calls */
1.12 misho 1592: RPC_FUNCS_LOCK(&srv->srv_funcs);
1593: while ((f = SLIST_FIRST(&srv->srv_funcs))) {
1594: SLIST_REMOVE_HEAD(&srv->srv_funcs, func_next);
1.1 misho 1595:
1.10 misho 1596: AIT_FREE_VAL(&f->func_name);
1.14 misho 1597: e_free(f);
1.1 misho 1598: }
1.12 misho 1599: srv->srv_funcs.avlh_root = NULL;
1600: RPC_FUNCS_UNLOCK(&srv->srv_funcs);
1.1 misho 1601:
1602: return 0;
1603: }
1604:
1605:
1606: /*
1607: * rpc_srv_execCall() Execute registered call from RPC server
1.7 misho 1608: *
1.10 misho 1609: * @cli = RPC client
1.1 misho 1610: * @rpc = IN RPC call structure
1.10 misho 1611: * @funcname = Execute RPC function
1.5 misho 1612: * @args = IN RPC calling arguments from RPC client
1.1 misho 1613: * return: -1 error, !=-1 ok
1614: */
1615: int
1.10 misho 1616: rpc_srv_execCall(rpc_cli_t * __restrict cli, struct tagRPCCall * __restrict rpc,
1617: ait_val_t funcname, array_t * __restrict args)
1.1 misho 1618: {
1619: rpc_callback_t func;
1620:
1.10 misho 1621: if (!cli || !rpc || !AIT_ADDR(&funcname)) {
1.7 misho 1622: rpc_SetErr(EINVAL, "Invalid parameter can`t exec function");
1.1 misho 1623: return -1;
1624: }
1625:
1.10 misho 1626: func = AIT_GET_LIKE(&funcname, rpc_callback_t);
1627: return func(cli, rpc, args);
1.1 misho 1628: }
1.24 misho 1629:
1630:
1631: /*
1632: * rpc_srv_initServer2() - Init & create layer2 RPC Server
1633: *
1634: * @InstID = Instance for authentication & recognition
1635: * @concurentClients = Concurent clients at same time to this server
1636: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
1637: * @csIface = Interface name for bind server, if NULL first interface on host
1638: * return: NULL == error or !=NULL bind and created RPC server instance
1639: */
1640: rpc_srv_t *
1641: rpc_srv_initServer2(u_char InstID, int concurentClients, int netBuf, const char *csIface)
1642: {
1643: int n = 1;
1644: rpc_srv_t *srv = NULL;
1645: sockaddr_t sa = E_SOCKADDR_INIT;
1646: char szIface[64], szStr[STRSIZ];
1647: register int i;
1648: struct ifreq ifr;
1649: struct bpf_insn insns[] = {
1650: BPF_STMT(BPF_LD + BPF_H + BPF_ABS, 12),
1651: BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, RPC_DEFPORT, 0, 1),
1652: BPF_STMT(BPF_RET + BPF_K, -1),
1653: BPF_STMT(BPF_RET + BPF_K, 0),
1654: };
1655: struct bpf_program fcode = {
1656: .bf_len = sizeof(insns) / sizeof(struct bpf_insn),
1657: .bf_insns = insns
1658: };
1659:
1660: if (!concurentClients) {
1661: rpc_SetErr(EINVAL, "Invalid parameters can`t init RPC server");
1662: return NULL;
1663: }
1664: if (!csIface) {
1665: if (e_get1stiface(szIface, sizeof szIface))
1666: return NULL;
1667: } else
1668: strlcpy(szIface, csIface, sizeof szIface);
1669: if (!e_getifacebyname(szIface, &sa))
1670: return NULL;
1671:
1672: #ifdef HAVE_SRANDOMDEV
1673: srandomdev();
1674: #else
1675: time_t tim;
1676:
1677: srandom((time(&tim) ^ getpid()));
1678: #endif
1679:
1680: srv = e_malloc(sizeof(rpc_srv_t));
1681: if (!srv) {
1682: LOGERR;
1683: return NULL;
1684: } else
1685: memset(srv, 0, sizeof(rpc_srv_t));
1686:
1687: srv->srv_proto = SOCK_BPF;
1688: srv->srv_netbuf = netBuf;
1689: srv->srv_session.sess_version = RPC_VERSION;
1690: srv->srv_session.sess_instance = InstID;
1691:
1692: srv->srv_server.cli_parent = srv;
1693: memcpy(&srv->srv_server.cli_sa, &sa, sizeof srv->srv_server.cli_sa);
1694:
1695: /* init functions */
1696: pthread_mutex_init(&srv->srv_funcs.mtx, NULL);
1697: SLIST_INIT(&srv->srv_funcs);
1698: AVL_INIT(&srv->srv_funcs);
1699:
1700: /* init scheduler */
1701: srv->srv_root = schedBegin();
1702: if (!srv->srv_root) {
1703: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1704: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1705: e_free(srv);
1706: return NULL;
1707: }
1708:
1709: /* init pool for clients */
1710: srv->srv_clients = array_Init(concurentClients);
1711: if (!srv->srv_clients) {
1712: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1713: schedEnd(&srv->srv_root);
1714: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1715: e_free(srv);
1716: return NULL;
1717: }
1718:
1719: /* create server handler */
1720: for (i = 0; i < 10; i++) {
1721: memset(szStr, 0, sizeof szStr);
1722: snprintf(szStr, sizeof szStr, "/dev/bpf%d", i);
1723: srv->srv_server.cli_sock = open(szStr, O_RDWR);
1724: if (srv->srv_server.cli_sock > STDERR_FILENO)
1725: break;
1726: }
1727: if (srv->srv_server.cli_sock < 3) {
1728: LOGERR;
1729: array_Destroy(&srv->srv_clients);
1730: schedEnd(&srv->srv_root);
1731: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1732: e_free(srv);
1733: return NULL;
1734: }
1735:
1736: if (ioctl(srv->srv_server.cli_sock, BIOCIMMEDIATE, &n) == -1) {
1737: LOGERR;
1738: goto err;
1739: }
1740: if (ioctl(srv->srv_server.cli_sock, BIOCSETF, &fcode) == -1) {
1741: LOGERR;
1742: goto err;
1743: }
1744: n = (netBuf < RPC_MIN_BUFSIZ) ? getpagesize() : E_ALIGN(netBuf, 2);
1745: if (ioctl(srv->srv_server.cli_sock, BIOCSBLEN, &n) == -1) {
1746: LOGERR;
1747: goto err;
1748: } else
1749: srv->srv_netbuf = n;
1750:
1751: memset(&ifr, 0, sizeof ifr);
1752: strlcpy(ifr.ifr_name, szIface, sizeof ifr.ifr_name);
1753: if (ioctl(srv->srv_server.cli_sock, BIOCSETIF, &ifr) == -1) {
1754: LOGERR;
1755: goto err;
1756: } else
1757: fcntl(srv->srv_server.cli_sock, F_SETFL,
1758: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
1759:
1760: rpc_register_srvPing(srv);
1761:
1762: return srv;
1763: err: /* error condition */
1764: close(srv->srv_server.cli_sock);
1765: array_Destroy(&srv->srv_clients);
1766: schedEnd(&srv->srv_root);
1767: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1768: e_free(srv);
1769: return NULL;
1770: }
1.25 misho 1771:
1772: /*
1773: * rpc_srv_initServerExt() - Init & create pipe RPC Server
1774: *
1775: * @InstID = Instance for authentication & recognition
1776: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
1777: * @fd = File descriptor
1778: * return: NULL == error or !=NULL bind and created RPC server instance
1779: */
1780: rpc_srv_t *
1781: rpc_srv_initServerExt(u_char InstID, int netBuf, int fd)
1782: {
1783: rpc_srv_t *srv = NULL;
1784:
1785: #ifdef HAVE_SRANDOMDEV
1786: srandomdev();
1787: #else
1788: time_t tim;
1789:
1790: srandom((time(&tim) ^ getpid()));
1791: #endif
1792:
1793: srv = e_malloc(sizeof(rpc_srv_t));
1794: if (!srv) {
1795: LOGERR;
1796: return NULL;
1797: } else
1798: memset(srv, 0, sizeof(rpc_srv_t));
1799:
1800: srv->srv_proto = SOCK_EXT;
1801: srv->srv_netbuf = (netBuf < RPC_MIN_BUFSIZ) ?
1802: getpagesize() : E_ALIGN(netBuf, 2);
1803: srv->srv_session.sess_version = RPC_VERSION;
1804: srv->srv_session.sess_instance = InstID;
1805:
1806: srv->srv_server.cli_parent = srv;
1807: srv->srv_server.cli_sock = fd;
1808:
1809: /* init functions */
1810: pthread_mutex_init(&srv->srv_funcs.mtx, NULL);
1811: SLIST_INIT(&srv->srv_funcs);
1812: AVL_INIT(&srv->srv_funcs);
1813:
1814: /* init scheduler */
1815: srv->srv_root = schedBegin();
1816: if (!srv->srv_root) {
1817: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1818: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1819: e_free(srv);
1820: return NULL;
1821: }
1822:
1823: /* init pool for clients */
1824: srv->srv_clients = array_Init(1);
1825: if (!srv->srv_clients) {
1826: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1827: schedEnd(&srv->srv_root);
1828: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1829: e_free(srv);
1830: return NULL;
1831: }
1832:
1833: fcntl(srv->srv_server.cli_sock, F_SETFL,
1834: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
1835:
1836: rpc_register_srvPing(srv);
1837:
1838: return srv;
1839: }
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