Annotation of libaitrpc/src/srv.c, revision 1.20.4.3
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 $
1.20.4.3! misho 6: * $Id: srv.c,v 1.20.4.2 2013/11/13 12:18:43 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:
1.14 misho 15: Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
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:
62: static sched_task_func_t cbProto[SOCK_RAW + 1][4] = {
63: { acceptClients, closeClient, rxPacket, txPacket }, /* SOCK_STREAM */
64: { acceptClients, closeClient, rxPacket, txPacket }, /* SOCK_STREAM */
65: { rxUDPPacket, freeClient, rxUDPPacket, txUDPPacket }, /* SOCK_DGRAM */
66: { NULL, NULL, NULL, NULL } /* SOCK_RAW */
67: };
68:
69:
1.16 misho 70: void
1.13 misho 71: rpc_freeCli(rpc_cli_t * __restrict c)
1.10 misho 72: {
73: rpc_srv_t *s = c->cli_parent;
74:
1.13 misho 75: schedCancelby(s->srv_root, taskMAX, CRITERIA_ARG, c, NULL);
1.10 misho 76:
77: /* free buffer */
78: AIT_FREE_VAL(&c->cli_buf);
79:
1.14 misho 80: array_Del(s->srv_clients, c->cli_id, 0);
1.10 misho 81: if (c)
1.14 misho 82: e_free(c);
1.13 misho 83: }
84:
85:
86: static inline int
1.14 misho 87: _check4freeslot(rpc_srv_t * __restrict srv, sockaddr_t * __restrict sa)
1.13 misho 88: {
89: rpc_cli_t *c = NULL;
90: register int i;
91:
92: /* check free slots for connect */
1.14 misho 93: for (i = 0; i < array_Size(srv->srv_clients) &&
94: (c = array(srv->srv_clients, i, rpc_cli_t*)); i++)
1.13 misho 95: /* check for duplicates */
1.14 misho 96: if (sa && !e_addrcmp(&c->cli_sa, sa, 42))
1.13 misho 97: break;
1.14 misho 98: if (i >= array_Size(srv->srv_clients))
1.13 misho 99: return -1; /* no more free slots! */
100:
101: return i;
102: }
103:
104: static rpc_cli_t *
1.14 misho 105: _allocClient(rpc_srv_t * __restrict srv, sockaddr_t * __restrict sa)
1.13 misho 106: {
107: rpc_cli_t *c = NULL;
108: int n;
109:
110: n = _check4freeslot(srv, sa);
111: if (n == -1)
112: return NULL;
113: else
1.14 misho 114: c = array(srv->srv_clients, n, rpc_cli_t*);
1.13 misho 115:
116: if (!c) {
1.14 misho 117: c = e_malloc(sizeof(rpc_cli_t));
1.13 misho 118: if (!c) {
119: LOGERR;
120: srv->srv_kill = 1;
121: return NULL;
122: } else {
123: memset(c, 0, sizeof(rpc_cli_t));
1.14 misho 124: array_Set(srv->srv_clients, n, c);
1.13 misho 125: c->cli_id = n;
126: c->cli_parent = srv;
127: }
128:
129: /* alloc empty buffer */
1.14 misho 130: AIT_SET_BUFSIZ(&c->cli_buf, 0, srv->srv_netbuf);
1.13 misho 131: }
132:
133: return c;
134: }
135:
136:
137: static void *
138: freeClient(sched_task_t *task)
139: {
140: rpc_freeCli(TASK_ARG(task));
141:
142: return NULL;
143: }
144:
145: static void *
146: closeClient(sched_task_t *task)
147: {
148: int sock = ((rpc_cli_t*) TASK_ARG(task))->cli_sock;
149:
150: rpc_freeCli(TASK_ARG(task));
151:
152: /* close client socket */
153: shutdown(sock, SHUT_RDWR);
154: close(sock);
1.10 misho 155: return NULL;
156: }
1.7 misho 157:
158: static void *
159: txPacket(sched_task_t *task)
160: {
161: rpc_cli_t *c = TASK_ARG(task);
162: rpc_srv_t *s = c->cli_parent;
163: rpc_func_t *f = NULL;
1.18 misho 164: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1.7 misho 165: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
1.18 misho 166: int ret, estlen, wlen = sizeof(struct tagRPCCall);
1.19 misho 167: struct pollfd pfd;
1.20.4.3! misho 168: #ifdef TCP_SESSION_TIMEOUT
! 169: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
! 170:
! 171: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
! 172: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
! 173: TASK_ARG(task), ts, TASK_ARG(task), 0);
! 174: #endif
1.7 misho 175:
176: if (rpc->call_argc) {
1.10 misho 177: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
1.7 misho 178: if (!f) {
1.10 misho 179: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
1.18 misho 180:
1.7 misho 181: rpc->call_argc ^= rpc->call_argc;
182: rpc->call_rep.ret = RPC_ERROR(-1);
183: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
184: } else {
1.18 misho 185: /* calc estimated length */
186: estlen = ait_resideVars(RPC_RETVARS(c)) + wlen;
187: if (estlen > AIT_LEN(&c->cli_buf))
188: AIT_RE_BUF(&c->cli_buf, estlen);
189: buf = AIT_GET_BUF(&c->cli_buf);
1.19 misho 190: rpc = (struct tagRPCCall*) buf;
1.18 misho 191:
1.14 misho 192: rpc->call_argc = htons(array_Size(RPC_RETVARS(c)));
1.7 misho 193: /* Go Encapsulate variables */
1.18 misho 194: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
195: RPC_RETVARS(c));
1.10 misho 196: /* Free return values */
1.14 misho 197: ait_freeVars(&c->cli_vars);
1.7 misho 198: if (ret == -1) {
199: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
1.19 misho 200:
1.7 misho 201: rpc->call_argc ^= rpc->call_argc;
202: rpc->call_rep.ret = RPC_ERROR(-1);
203: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
204: } else
205: wlen += ret;
206: }
207: }
208:
1.18 misho 209: rpc->call_len = htonl(wlen);
1.8 misho 210:
1.15 misho 211: #if 0
1.7 misho 212: /* calculate CRC */
213: rpc->call_crc ^= rpc->call_crc;
1.8 misho 214: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
1.15 misho 215: #endif
1.7 misho 216:
217: /* send reply */
1.19 misho 218: pfd.fd = TASK_FD(task);
219: pfd.events = POLLOUT;
220: for (; wlen > 0; wlen -= ret, buf += ret) {
221: if ((ret = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 ||
222: pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
223: if (ret)
224: LOGERR;
225: else
226: rpc_SetErr(ETIMEDOUT, "Timeout reached! Server not respond");
227: /* close connection */
228: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
229: TASK_ARG(task), 0, NULL, 0);
230: return NULL;
231: }
232: ret = send(TASK_FD(task), buf, MIN(wlen, s->srv_netbuf), MSG_NOSIGNAL);
233: if (ret == -1) {
234: /* close connection */
235: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
236: TASK_ARG(task), 0, NULL, 0);
237: return NULL;
238: }
1.10 misho 239: }
1.7 misho 240:
241: return NULL;
242: }
243:
244: static void *
245: execCall(sched_task_t *task)
246: {
247: rpc_cli_t *c = TASK_ARG(task);
248: rpc_srv_t *s = c->cli_parent;
249: rpc_func_t *f = NULL;
250: array_t *arr = NULL;
1.18 misho 251: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1.7 misho 252: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
253: int argc = ntohs(rpc->call_argc);
254:
255: /* Go decapsulate variables ... */
1.8 misho 256: if (argc) {
1.14 misho 257: arr = ait_buffer2vars(buf + sizeof(struct tagRPCCall),
1.18 misho 258: AIT_LEN(&c->cli_buf) - sizeof(struct tagRPCCall), argc, 42);
1.7 misho 259: if (!arr) {
1.14 misho 260: rpc_SetErr(ERPCMISMATCH, "#%d - %s", elwix_GetErrno(), elwix_GetError());
1.18 misho 261:
1.7 misho 262: rpc->call_argc ^= rpc->call_argc;
263: rpc->call_rep.ret = RPC_ERROR(-1);
264: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
265: return NULL;
266: }
1.10 misho 267: } else
268: arr = NULL;
1.7 misho 269:
1.10 misho 270: if (!(f = rpc_srv_getCall(s, ntohs(rpc->call_tag)))) {
1.7 misho 271: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
1.18 misho 272:
1.7 misho 273: rpc->call_argc ^= rpc->call_argc;
274: rpc->call_rep.ret = RPC_ERROR(-1);
275: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
276: } else {
1.8 misho 277: /* if client doesn't want reply */
1.10 misho 278: argc = RPC_CHK_NOREPLY(rpc);
279: rpc->call_rep.ret = RPC_ERROR(rpc_srv_execCall(c, rpc, f->func_name, arr));
1.7 misho 280: if (rpc->call_rep.ret == htonl(-1)) {
1.20 misho 281: if (!rpc->call_rep.eno) {
282: LOGERR;
283: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
284: }
1.7 misho 285: rpc->call_argc ^= rpc->call_argc;
286: } else {
287: rpc->call_rep.eno ^= rpc->call_rep.eno;
1.8 misho 288: if (argc) {
289: /* without reply */
1.14 misho 290: ait_freeVars(&c->cli_vars);
1.8 misho 291: rpc->call_argc ^= rpc->call_argc;
1.10 misho 292: } else {
293: /* reply */
1.14 misho 294: rpc->call_argc = htons(array_Size(RPC_RETVARS(c)));
1.10 misho 295: }
1.7 misho 296: }
297: }
298:
1.14 misho 299: array_Destroy(&arr);
1.7 misho 300: return NULL;
301: }
302:
303: static void *
304: rxPacket(sched_task_t *task)
305: {
306: rpc_cli_t *c = TASK_ARG(task);
307: rpc_srv_t *s = c->cli_parent;
1.18 misho 308: int len, rlen, noreply, estlen;
1.15 misho 309: #if 0
310: u_short crc;
311: #endif
1.10 misho 312: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1.18 misho 313: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
1.19 misho 314: struct pollfd pfd;
1.20.4.3! misho 315: #ifdef TCP_SESSION_TIMEOUT
! 316: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
! 317:
! 318: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
! 319: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
! 320: TASK_ARG(task), ts, TASK_ARG(task), 0);
! 321: #endif
1.7 misho 322:
1.18 misho 323: memset(buf, 0, sizeof(struct tagRPCCall));
1.19 misho 324: rlen = recv(TASK_FD(task), rpc, sizeof(struct tagRPCCall), MSG_PEEK);
1.18 misho 325: if (rlen < sizeof(struct tagRPCCall)) {
1.10 misho 326: /* close connection */
1.13 misho 327: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
328: TASK_ARG(task), 0, NULL, 0);
1.7 misho 329: return NULL;
1.10 misho 330: } else {
1.18 misho 331: estlen = ntohl(rpc->call_len);
332: if (estlen > AIT_LEN(&c->cli_buf))
333: AIT_RE_BUF(&c->cli_buf, estlen);
334: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
1.19 misho 335: buf = AIT_GET_BUF(&c->cli_buf);
336: len = estlen;
1.18 misho 337: }
338:
1.19 misho 339: /* get next part of packet */
340: memset(buf, 0, len);
341: pfd.fd = TASK_FD(task);
342: pfd.events = POLLIN | POLLPRI;
343: for (; len > 0; len -= rlen, buf += rlen) {
344: if ((rlen = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 ||
345: pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
346: if (rlen)
347: LOGERR;
348: else
349: rpc_SetErr(ETIMEDOUT, "Timeout reached! Server not respond");
350: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
351: TASK_ARG(task), 0, NULL, 0);
352: return NULL;
353: }
1.18 misho 354: rlen = recv(TASK_FD(task), buf, len, 0);
355: if (rlen == -1) {
356: /* close connection */
357: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
358: TASK_ARG(task), 0, NULL, 0);
1.8 misho 359: return NULL;
1.10 misho 360: }
1.18 misho 361: }
1.8 misho 362:
1.15 misho 363: #if 0
1.18 misho 364: /* check integrity of packet */
365: crc = ntohs(rpc->call_crc);
366: rpc->call_crc ^= rpc->call_crc;
367: if (crc != crcFletcher16((u_short*) rpc, len / 2)) {
368: rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet");
369: return NULL;
370: }
1.15 misho 371: #endif
1.7 misho 372:
1.18 misho 373: noreply = RPC_CHK_NOREPLY(rpc);
1.7 misho 374:
1.18 misho 375: /* check RPC packet session info */
376: if (rpc_chkPktSession(&rpc->call_session, &s->srv_session)) {
377: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
1.7 misho 378:
1.18 misho 379: rpc->call_argc ^= rpc->call_argc;
380: rpc->call_rep.ret = RPC_ERROR(-1);
381: rpc->call_rep.eno = RPC_ERROR(errno);
382: } else {
383: /* execute RPC call */
384: schedEvent(TASK_ROOT(task), execCall, TASK_ARG(task), (int) noreply, rpc, len);
385: }
1.7 misho 386:
1.18 misho 387: /* send RPC reply */
388: if (!noreply)
389: schedWrite(TASK_ROOT(task), cbProto[s->srv_proto][CB_TXPACKET],
390: TASK_ARG(task), TASK_FD(task), rpc, len);
1.7 misho 391:
392: /* lets get next packet */
1.18 misho 393: schedReadSelf(task);
1.7 misho 394: return NULL;
395: }
396:
1.1 misho 397: static void *
1.10 misho 398: acceptClients(sched_task_t *task)
1.1 misho 399: {
1.10 misho 400: rpc_srv_t *srv = TASK_ARG(task);
401: rpc_cli_t *c = NULL;
1.14 misho 402: socklen_t salen = sizeof(sockaddr_t);
1.20.4.1 misho 403: int sock;
1.20.4.3! misho 404: #ifdef TCP_SESSION_TIMEOUT
! 405: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
! 406: #endif
1.7 misho 407:
1.13 misho 408: c = _allocClient(srv, NULL);
1.20.4.1 misho 409: if (!c) {
410: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
411: if ((sock = accept(TASK_FD(task), NULL, NULL)) != -1) {
412: shutdown(sock, SHUT_RDWR);
413: close(sock);
414: }
1.10 misho 415: goto end;
1.20.4.1 misho 416: }
1.10 misho 417:
418: /* accept client */
419: c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen);
420: if (c->cli_sock == -1) {
421: LOGERR;
422: AIT_FREE_VAL(&c->cli_buf);
1.14 misho 423: array_Del(srv->srv_clients, c->cli_id, 42);
1.10 misho 424: goto end;
1.1 misho 425: } else
1.10 misho 426: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
1.1 misho 427:
1.20.4.3! misho 428: #ifdef TCP_SESSION_TIMEOUT
! 429: /* armed timer for close stateless connection */
! 430: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
! 431: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT], c,
! 432: ts, c, 0);
! 433: #endif
1.13 misho 434: schedRead(TASK_ROOT(task), cbProto[srv->srv_proto][CB_RXPACKET], c,
435: c->cli_sock, NULL, 0);
1.10 misho 436: end:
437: schedReadSelf(task);
438: return NULL;
439: }
1.5 misho 440:
1.7 misho 441:
1.10 misho 442: static void *
1.13 misho 443: txUDPPacket(sched_task_t *task)
1.10 misho 444: {
445: rpc_cli_t *c = TASK_ARG(task);
446: rpc_srv_t *s = c->cli_parent;
1.13 misho 447: rpc_func_t *f = NULL;
1.18 misho 448: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1.13 misho 449: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
450: int ret, wlen = sizeof(struct tagRPCCall);
451: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
452:
453: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
454: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
455: TASK_ARG(task), ts, TASK_ARG(task), 0);
456:
457: if (rpc->call_argc) {
458: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
459: if (!f) {
460: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
461: rpc->call_argc ^= rpc->call_argc;
462: rpc->call_rep.ret = RPC_ERROR(-1);
463: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
464: } else {
1.14 misho 465: rpc->call_argc = htons(array_Size(RPC_RETVARS(c)));
1.13 misho 466: /* Go Encapsulate variables */
1.18 misho 467: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
468: RPC_RETVARS(c));
1.13 misho 469: /* Free return values */
1.14 misho 470: ait_freeVars(&c->cli_vars);
1.13 misho 471: if (ret == -1) {
472: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
473: rpc->call_argc ^= rpc->call_argc;
474: rpc->call_rep.ret = RPC_ERROR(-1);
475: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
476: } else
477: wlen += ret;
478: }
479: }
1.7 misho 480:
1.18 misho 481: rpc->call_len = htonl(wlen);
1.7 misho 482:
1.13 misho 483: /* calculate CRC */
484: rpc->call_crc ^= rpc->call_crc;
485: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
486:
487: /* send reply */
488: ret = sendto(TASK_FD(task), buf, wlen, MSG_NOSIGNAL,
489: &c->cli_sa.sa, c->cli_sa.sa.sa_len);
490: if (ret == -1 || ret != wlen) {
491: /* close connection */
492: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
493: TASK_ARG(task), 0, NULL, 0);
494: }
495:
496: return NULL;
497: }
498:
499: static void *
500: rxUDPPacket(sched_task_t *task)
501: {
502: rpc_srv_t *srv = TASK_ARG(task);
503: rpc_cli_t *c = NULL;
504: int len, rlen, noreply;
505: u_short crc, off = 0;
506: u_char buf[USHRT_MAX + 1];
507: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
1.14 misho 508: sockaddr_t sa;
509: socklen_t salen;
1.13 misho 510: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
511:
512: /* receive connect packet */
1.14 misho 513: salen = sa.ss.ss_len = sizeof(sockaddr_t);
1.13 misho 514: rlen = recvfrom(TASK_FD(task), buf, sizeof buf, 0, &sa.sa, &salen);
515: if (rlen < 1)
516: goto end;
517:
518: c = _allocClient(srv, &sa);
519: if (!c)
520: goto end;
521: else {
522: c->cli_sock = TASK_FD(task);
523: memcpy(&c->cli_sa, &sa, sizeof c->cli_sa);
524: memcpy(AIT_GET_BUF(&c->cli_buf), buf, AIT_LEN(&c->cli_buf));
525: /* armed timer for close stateless connection */
526: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
527: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
528: c, ts, c, 0);
529: }
530:
531: do {
532: /* check RPC packet */
533: if (rlen < sizeof(struct tagRPCCall)) {
534: rpc_SetErr(ERPCMISMATCH, "Short RPC packet");
535: break;
536: } else
537: rpc = (struct tagRPCCall*) (AIT_GET_BUF(&c->cli_buf) + off);
538:
1.18 misho 539: len = ntohl(rpc->call_len);
1.13 misho 540: rlen -= len;
541:
542: /* check RPC packet lengths */
543: if (rlen < 0 || len < sizeof(struct tagRPCCall)) {
544: rpc_SetErr(ERPCMISMATCH, "Broken RPC packet length");
545: /* skip entire packet */
546: break;
547: }
548:
549: /* check integrity of packet */
550: crc = ntohs(rpc->call_crc);
551: rpc->call_crc ^= rpc->call_crc;
552: if (crc != crcFletcher16((u_short*) rpc, len / 2)) {
553: rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet");
554:
555: off += len;
556: /* try next packet remaining into buffer */
557: continue;
558: }
559:
560: noreply = RPC_CHK_NOREPLY(rpc);
561:
562: /* check RPC packet session info */
563: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session)) {
564: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
1.18 misho 565:
1.13 misho 566: rpc->call_argc ^= rpc->call_argc;
567: rpc->call_rep.ret = RPC_ERROR(-1);
568: rpc->call_rep.eno = RPC_ERROR(errno);
569: } else {
570: /* execute RPC call */
1.18 misho 571: schedEvent(TASK_ROOT(task), execCall, c,
572: (int) noreply, rpc, len);
1.13 misho 573: }
574:
575: /* send RPC reply */
576: if (!noreply)
577: schedWrite(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
578: c, TASK_FD(task), rpc, len);
579:
580: off += len;
581: } while (rlen > 0);
582:
583: end:
584: schedReadSelf(task);
585: return NULL;
586: }
587:
588: /* ------------------------------------------------------ */
589:
1.16 misho 590: void
1.13 misho 591: rpc_freeBLOBCli(rpc_cli_t * __restrict c)
592: {
593: rpc_srv_t *s = c->cli_parent;
594:
595: schedCancelby(s->srv_blob.root, taskMAX, CRITERIA_ARG, c, NULL);
1.10 misho 596:
597: /* free buffer */
598: AIT_FREE_VAL(&c->cli_buf);
599:
1.14 misho 600: array_Del(s->srv_blob.clients, c->cli_id, 0);
1.10 misho 601: if (c)
1.14 misho 602: e_free(c);
1.13 misho 603: }
604:
605:
606: static void *
607: closeBLOBClient(sched_task_t *task)
608: {
609: int sock = ((rpc_cli_t*) TASK_ARG(task))->cli_sock;
610:
611: rpc_freeBLOBCli(TASK_ARG(task));
612:
613: /* close client socket */
614: shutdown(sock, SHUT_RDWR);
615: close(sock);
1.7 misho 616: return NULL;
617: }
618:
619: static void *
620: txBLOB(sched_task_t *task)
621: {
1.10 misho 622: rpc_cli_t *c = TASK_ARG(task);
623: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1.7 misho 624: int wlen = sizeof(struct tagBLOBHdr);
625:
626: /* send reply */
1.10 misho 627: wlen = send(TASK_FD(task), buf, wlen, MSG_NOSIGNAL);
628: if (wlen == -1 || wlen != sizeof(struct tagBLOBHdr)) {
629: /* close blob connection */
630: schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0);
631: }
1.7 misho 632:
633: return NULL;
634: }
1.4 misho 635:
1.7 misho 636: static void *
637: rxBLOB(sched_task_t *task)
638: {
639: rpc_cli_t *c = TASK_ARG(task);
640: rpc_srv_t *s = c->cli_parent;
641: rpc_blob_t *b;
1.10 misho 642: struct tagBLOBHdr blob;
1.7 misho 643: int rlen;
644:
1.10 misho 645: memset(&blob, 0, sizeof blob);
646: rlen = recv(TASK_FD(task), &blob, sizeof blob, 0);
647: if (rlen < 1) {
648: /* close blob connection */
649: schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0);
1.7 misho 650: return NULL;
651: }
1.5 misho 652:
1.10 misho 653: /* check BLOB packet */
654: if (rlen < sizeof(struct tagBLOBHdr)) {
655: rpc_SetErr(ERPCMISMATCH, "Short BLOB packet");
1.6 misho 656:
1.10 misho 657: schedReadSelf(task);
1.7 misho 658: return NULL;
659: }
1.1 misho 660:
1.7 misho 661: /* check RPC packet session info */
1.15 misho 662: if (rpc_chkPktSession(&blob.hdr_session, &s->srv_session)) {
1.7 misho 663: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
1.10 misho 664: blob.hdr_cmd = error;
1.7 misho 665: goto end;
666: }
667:
668: /* Go to proceed packet ... */
1.10 misho 669: switch (blob.hdr_cmd) {
1.7 misho 670: case get:
1.10 misho 671: if (!(b = rpc_srv_getBLOB(s, ntohl(blob.hdr_var)))) {
672: rpc_SetErr(EINVAL, "Var=%x not found", ntohl(blob.hdr_var));
673: blob.hdr_cmd = no;
674: blob.hdr_ret = RPC_ERROR(-1);
1.7 misho 675: break;
676: } else
1.10 misho 677: blob.hdr_len = htonl(b->blob_len);
1.5 misho 678:
1.7 misho 679: if (rpc_srv_blobMap(s, b) != -1) {
680: /* deliver BLOB variable to client */
1.10 misho 681: blob.hdr_ret = htonl(rpc_srv_sendBLOB(c, b));
1.7 misho 682: rpc_srv_blobUnmap(b);
683: } else {
1.10 misho 684: blob.hdr_cmd = error;
685: blob.hdr_ret = RPC_ERROR(-1);
1.7 misho 686: }
687: break;
688: case set:
1.17 misho 689: if ((b = rpc_srv_registerBLOB(s, ntohl(blob.hdr_len),
690: ntohl(blob.hdr_ret)))) {
1.7 misho 691: /* set new BLOB variable for reply :) */
1.10 misho 692: blob.hdr_var = htonl(b->blob_var);
1.7 misho 693:
694: /* receive BLOB from client */
1.10 misho 695: blob.hdr_ret = htonl(rpc_srv_recvBLOB(c, b));
1.7 misho 696: rpc_srv_blobUnmap(b);
1.5 misho 697: } else {
1.10 misho 698: blob.hdr_cmd = error;
699: blob.hdr_ret = RPC_ERROR(-1);
1.7 misho 700: }
701: break;
702: case unset:
1.11 misho 703: if (rpc_srv_unregisterBLOB(s, ntohl(blob.hdr_var)) == -1) {
1.10 misho 704: blob.hdr_cmd = error;
705: blob.hdr_ret = RPC_ERROR(-1);
1.1 misho 706: }
707: break;
1.7 misho 708: default:
1.10 misho 709: rpc_SetErr(EPROCUNAVAIL, "Unsupported BLOB command %d", blob.hdr_cmd);
710: blob.hdr_cmd = error;
711: blob.hdr_ret = RPC_ERROR(-1);
1.7 misho 712: }
1.1 misho 713:
1.7 misho 714: end:
1.10 misho 715: memcpy(AIT_ADDR(&c->cli_buf), &blob, sizeof blob);
716: schedWrite(TASK_ROOT(task), txBLOB, TASK_ARG(task), TASK_FD(task), NULL, 0);
717: schedReadSelf(task);
1.7 misho 718: return NULL;
1.2 misho 719: }
720:
721: static void *
1.17 misho 722: flushBLOB(sched_task_t *task)
723: {
724: rpc_srv_t *srv = TASK_ARG(task);
725: rpc_blob_t *b, *tmp;
726:
727: TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) {
728: TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node);
729:
730: rpc_srv_blobFree(srv, b);
731: e_free(b);
732: }
733:
734: schedSignalSelf(task);
735: return NULL;
736: }
737:
738: static void *
1.10 misho 739: acceptBLOBClients(sched_task_t *task)
1.2 misho 740: {
1.10 misho 741: rpc_srv_t *srv = TASK_ARG(task);
742: rpc_cli_t *c = NULL;
743: register int i;
1.14 misho 744: socklen_t salen = sizeof(sockaddr_t);
1.20.4.1 misho 745: int sock;
1.12 misho 746: #ifdef TCP_NOPUSH
747: int n = 1;
748: #endif
1.7 misho 749:
1.10 misho 750: /* check free slots for connect */
1.14 misho 751: for (i = 0; i < array_Size(srv->srv_blob.clients) &&
752: (c = array(srv->srv_blob.clients, i, rpc_cli_t*)); i++);
1.20.4.1 misho 753: if (c) { /* no more free slots! */
1.20.4.2 misho 754: EVERBOSE(1, "BLOB client quota exceeded! Connection will be shutdown!\n");
1.20.4.1 misho 755: if ((sock = accept(TASK_FD(task), NULL, NULL)) != -1) {
756: shutdown(sock, SHUT_RDWR);
757: close(sock);
758: }
1.10 misho 759: goto end;
1.20.4.1 misho 760: }
761:
1.14 misho 762: c = e_malloc(sizeof(rpc_cli_t));
1.10 misho 763: if (!c) {
1.7 misho 764: LOGERR;
1.10 misho 765: srv->srv_kill = srv->srv_blob.kill = 1;
1.7 misho 766: return NULL;
767: } else {
1.10 misho 768: memset(c, 0, sizeof(rpc_cli_t));
1.14 misho 769: array_Set(srv->srv_blob.clients, i, c);
1.10 misho 770: c->cli_id = i;
771: c->cli_parent = srv;
1.7 misho 772: }
1.4 misho 773:
1.10 misho 774: /* alloc empty buffer */
1.14 misho 775: AIT_SET_BUFSIZ(&c->cli_buf, 0, srv->srv_netbuf);
1.2 misho 776:
1.10 misho 777: /* accept client */
778: c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen);
779: if (c->cli_sock == -1) {
780: LOGERR;
781: AIT_FREE_VAL(&c->cli_buf);
1.14 misho 782: array_Del(srv->srv_blob.clients, i, 42);
1.10 misho 783: goto end;
1.12 misho 784: } else {
785: #ifdef TCP_NOPUSH
786: setsockopt(c->cli_sock, IPPROTO_TCP, TCP_NOPUSH, &n, sizeof n);
787: #endif
1.10 misho 788: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
1.12 misho 789: }
1.2 misho 790:
1.10 misho 791: schedRead(TASK_ROOT(task), rxBLOB, c, c->cli_sock, NULL, 0);
792: end:
793: schedReadSelf(task);
1.7 misho 794: return NULL;
1.1 misho 795: }
796:
1.10 misho 797: /* ------------------------------------------------------ */
1.1 misho 798:
799: /*
1.7 misho 800: * rpc_srv_initBLOBServer() - Init & create BLOB Server
801: *
1.4 misho 802: * @srv = RPC server instance
1.2 misho 803: * @Port = Port for bind server, if Port == 0 default port is selected
804: * @diskDir = Disk place for BLOB file objects
805: * return: -1 == error or 0 bind and created BLOB server instance
806: */
807: int
808: rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, u_short Port, const char *diskDir)
809: {
810: int n = 1;
811:
1.10 misho 812: if (!srv || srv->srv_kill) {
1.7 misho 813: rpc_SetErr(EINVAL, "Invalid parameters can`t init BLOB server");
1.2 misho 814: return -1;
815: }
816:
817: memset(&srv->srv_blob, 0, sizeof srv->srv_blob);
818: if (access(diskDir, R_OK | W_OK) == -1) {
819: LOGERR;
820: return -1;
821: } else
1.7 misho 822: AIT_SET_STR(&srv->srv_blob.dir, diskDir);
1.2 misho 823:
1.10 misho 824: /* init blob list */
825: TAILQ_INIT(&srv->srv_blob.blobs);
826:
1.2 misho 827: srv->srv_blob.server.cli_parent = srv;
1.4 misho 828:
1.14 misho 829: memcpy(&srv->srv_blob.server.cli_sa, &srv->srv_server.cli_sa, sizeof(sockaddr_t));
1.10 misho 830: switch (srv->srv_blob.server.cli_sa.sa.sa_family) {
1.4 misho 831: case AF_INET:
1.10 misho 832: srv->srv_blob.server.cli_sa.sin.sin_port =
833: htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin.sin_port) + 1);
1.4 misho 834: break;
835: case AF_INET6:
1.10 misho 836: srv->srv_blob.server.cli_sa.sin6.sin6_port =
837: htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin6.sin6_port) + 1);
1.4 misho 838: break;
839: case AF_LOCAL:
1.10 misho 840: strlcat(srv->srv_blob.server.cli_sa.sun.sun_path, ".blob",
841: sizeof srv->srv_blob.server.cli_sa.sun.sun_path);
1.4 misho 842: break;
843: default:
1.7 misho 844: AIT_FREE_VAL(&srv->srv_blob.dir);
1.4 misho 845: return -1;
1.2 misho 846: }
847:
1.4 misho 848: /* create BLOB server socket */
1.6 misho 849: srv->srv_blob.server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, SOCK_STREAM, 0);
1.2 misho 850: if (srv->srv_blob.server.cli_sock == -1) {
851: LOGERR;
1.7 misho 852: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 853: return -1;
854: }
855: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
856: LOGERR;
857: close(srv->srv_blob.server.cli_sock);
1.7 misho 858: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 859: return -1;
860: }
1.5 misho 861: n = srv->srv_netbuf;
862: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
863: LOGERR;
864: close(srv->srv_blob.server.cli_sock);
1.7 misho 865: AIT_FREE_VAL(&srv->srv_blob.dir);
1.5 misho 866: return -1;
867: }
868: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
869: LOGERR;
870: close(srv->srv_blob.server.cli_sock);
1.7 misho 871: AIT_FREE_VAL(&srv->srv_blob.dir);
1.5 misho 872: return -1;
873: }
1.6 misho 874: if (bind(srv->srv_blob.server.cli_sock, &srv->srv_blob.server.cli_sa.sa,
875: srv->srv_blob.server.cli_sa.sa.sa_len) == -1) {
1.2 misho 876: LOGERR;
877: close(srv->srv_blob.server.cli_sock);
1.7 misho 878: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 879: return -1;
1.13 misho 880: } else
881: fcntl(srv->srv_blob.server.cli_sock, F_SETFL,
882: fcntl(srv->srv_blob.server.cli_sock, F_GETFL) | O_NONBLOCK);
883:
1.2 misho 884:
1.10 misho 885: /* allocate pool for concurent blob clients */
1.14 misho 886: srv->srv_blob.clients = array_Init(array_Size(srv->srv_clients));
1.2 misho 887: if (!srv->srv_blob.clients) {
1.14 misho 888: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1.2 misho 889: close(srv->srv_blob.server.cli_sock);
1.7 misho 890: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 891: return -1;
1.10 misho 892: }
1.2 misho 893:
1.10 misho 894: /* init blob scheduler */
895: srv->srv_blob.root = schedBegin();
896: if (!srv->srv_blob.root) {
897: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1.14 misho 898: array_Destroy(&srv->srv_blob.clients);
1.10 misho 899: close(srv->srv_blob.server.cli_sock);
900: AIT_FREE_VAL(&srv->srv_blob.dir);
901: return -1;
902: }
1.2 misho 903:
904: return 0;
905: }
906:
907: /*
1.7 misho 908: * rpc_srv_endBLOBServer() - Destroy BLOB server, close all opened sockets and free resources
909: *
1.2 misho 910: * @srv = RPC Server instance
911: * return: none
912: */
1.16 misho 913: void
1.2 misho 914: rpc_srv_endBLOBServer(rpc_srv_t * __restrict srv)
915: {
1.10 misho 916: if (!srv)
1.2 misho 917: return;
918:
1.10 misho 919: srv->srv_blob.kill = 1;
1.17 misho 920:
921: schedEnd(&srv->srv_blob.root);
1.2 misho 922: }
923:
924: /*
1.10 misho 925: * rpc_srv_loopBLOBServer() - Execute Main BLOB server loop and wait for clients requests
1.7 misho 926: *
1.2 misho 927: * @srv = RPC Server instance
928: * return: -1 error or 0 ok, infinite loop ...
929: */
930: int
1.10 misho 931: rpc_srv_loopBLOBServer(rpc_srv_t * __restrict srv)
1.2 misho 932: {
1.10 misho 933: rpc_cli_t *c;
1.2 misho 934: register int i;
1.10 misho 935: rpc_blob_t *b, *tmp;
936: struct timespec ts = { RPC_SCHED_POLLING, 0 };
1.2 misho 937:
1.10 misho 938: if (!srv || srv->srv_kill) {
1.7 misho 939: rpc_SetErr(EINVAL, "Invalid parameter can`t start BLOB server");
1.2 misho 940: return -1;
941: }
942:
1.14 misho 943: if (listen(srv->srv_blob.server.cli_sock, array_Size(srv->srv_blob.clients)) == -1) {
1.2 misho 944: LOGERR;
945: return -1;
1.10 misho 946: }
947:
1.17 misho 948: schedSignal(srv->srv_blob.root, flushBLOB, srv, SIGFBLOB, NULL, 0);
1.10 misho 949: if (!schedRead(srv->srv_blob.root, acceptBLOBClients, srv,
950: srv->srv_blob.server.cli_sock, NULL, 0)) {
951: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
952: return -1;
953: }
1.2 misho 954:
1.10 misho 955: schedPolling(srv->srv_blob.root, &ts, NULL);
956: /* main rpc loop */
957: schedRun(srv->srv_blob.root, &srv->srv_blob.kill);
1.7 misho 958:
1.17 misho 959: /* detach blobs */
960: TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) {
961: TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node);
962:
963: rpc_srv_blobFree(srv, b);
964: e_free(b);
965: }
966:
1.10 misho 967: /* close all clients connections & server socket */
1.14 misho 968: for (i = 0; i < array_Size(srv->srv_blob.clients); i++) {
969: c = array(srv->srv_blob.clients, i, rpc_cli_t*);
1.10 misho 970: if (c) {
971: shutdown(c->cli_sock, SHUT_RDWR);
972: close(c->cli_sock);
973:
974: schedCancelby(srv->srv_blob.root, taskMAX, CRITERIA_ARG, c, NULL);
975: AIT_FREE_VAL(&c->cli_buf);
1.2 misho 976: }
1.14 misho 977: array_Del(srv->srv_blob.clients, i, 42);
1.10 misho 978: }
1.14 misho 979: array_Destroy(&srv->srv_blob.clients);
1.2 misho 980:
1.10 misho 981: close(srv->srv_blob.server.cli_sock);
1.2 misho 982:
1.10 misho 983: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 984: return 0;
985: }
986:
987:
988: /*
1.7 misho 989: * rpc_srv_initServer() - Init & create RPC Server
990: *
1.15 misho 991: * @InstID = Instance for authentication & recognition
1.1 misho 992: * @concurentClients = Concurent clients at same time to this server
1.10 misho 993: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
1.4 misho 994: * @csHost = Host name or address for bind server, if NULL any address
1.1 misho 995: * @Port = Port for bind server, if Port == 0 default port is selected
1.13 misho 996: * @proto = Protocol, if == 0 choose SOCK_STREAM
1.1 misho 997: * return: NULL == error or !=NULL bind and created RPC server instance
998: */
999: rpc_srv_t *
1.15 misho 1000: rpc_srv_initServer(u_char InstID, int concurentClients, int netBuf,
1001: const char *csHost, u_short Port, int proto)
1.1 misho 1002: {
1.10 misho 1003: int n = 1;
1.1 misho 1004: rpc_srv_t *srv = NULL;
1.14 misho 1005: sockaddr_t sa = E_SOCKADDR_INIT;
1.1 misho 1006:
1.15 misho 1007: if (!concurentClients || (proto < 0 || proto > SOCK_DGRAM)) {
1.10 misho 1008: rpc_SetErr(EINVAL, "Invalid parameters can`t init RPC server");
1.1 misho 1009: return NULL;
1010: }
1.14 misho 1011: if (!e_gethostbyname(csHost, Port, &sa))
1.10 misho 1012: return NULL;
1.1 misho 1013: if (!Port)
1014: Port = RPC_DEFPORT;
1.13 misho 1015: if (!proto)
1016: proto = SOCK_STREAM;
1.10 misho 1017: if (netBuf < RPC_MIN_BUFSIZ)
1.5 misho 1018: netBuf = BUFSIZ;
1.7 misho 1019: else
1.14 misho 1020: netBuf = E_ALIGN(netBuf, 2); /* align netBuf length */
1.10 misho 1021:
1022: #ifdef HAVE_SRANDOMDEV
1023: srandomdev();
1024: #else
1025: time_t tim;
1026:
1027: srandom((time(&tim) ^ getpid()));
1028: #endif
1.1 misho 1029:
1.14 misho 1030: srv = e_malloc(sizeof(rpc_srv_t));
1.1 misho 1031: if (!srv) {
1032: LOGERR;
1033: return NULL;
1034: } else
1035: memset(srv, 0, sizeof(rpc_srv_t));
1036:
1.13 misho 1037: srv->srv_proto = proto;
1.5 misho 1038: srv->srv_netbuf = netBuf;
1.1 misho 1039: srv->srv_session.sess_version = RPC_VERSION;
1.15 misho 1040: srv->srv_session.sess_instance = InstID;
1.1 misho 1041:
1042: srv->srv_server.cli_parent = srv;
1.10 misho 1043: memcpy(&srv->srv_server.cli_sa, &sa, sizeof srv->srv_server.cli_sa);
1044:
1.12 misho 1045: /* init functions */
1046: pthread_mutex_init(&srv->srv_funcs.mtx, NULL);
1047: SLIST_INIT(&srv->srv_funcs);
1048: AVL_INIT(&srv->srv_funcs);
1.10 misho 1049:
1050: /* init scheduler */
1051: srv->srv_root = schedBegin();
1052: if (!srv->srv_root) {
1053: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1.12 misho 1054: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1.14 misho 1055: e_free(srv);
1.10 misho 1056: return NULL;
1057: }
1058:
1059: /* init pool for clients */
1.14 misho 1060: srv->srv_clients = array_Init(concurentClients);
1.10 misho 1061: if (!srv->srv_clients) {
1.14 misho 1062: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1.10 misho 1063: schedEnd(&srv->srv_root);
1.12 misho 1064: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1.14 misho 1065: e_free(srv);
1.10 misho 1066: return NULL;
1067: }
1.4 misho 1068:
1069: /* create server socket */
1.13 misho 1070: srv->srv_server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, srv->srv_proto, 0);
1.1 misho 1071: if (srv->srv_server.cli_sock == -1) {
1072: LOGERR;
1.14 misho 1073: array_Destroy(&srv->srv_clients);
1.10 misho 1074: schedEnd(&srv->srv_root);
1.12 misho 1075: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1.14 misho 1076: e_free(srv);
1.1 misho 1077: return NULL;
1078: }
1079: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
1080: LOGERR;
1.10 misho 1081: goto err;
1.1 misho 1082: }
1.5 misho 1083: n = srv->srv_netbuf;
1084: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
1085: LOGERR;
1.10 misho 1086: goto err;
1.5 misho 1087: }
1088: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
1089: LOGERR;
1.10 misho 1090: goto err;
1.5 misho 1091: }
1.6 misho 1092: if (bind(srv->srv_server.cli_sock, &srv->srv_server.cli_sa.sa,
1093: srv->srv_server.cli_sa.sa.sa_len) == -1) {
1.1 misho 1094: LOGERR;
1.10 misho 1095: goto err;
1.13 misho 1096: } else
1097: fcntl(srv->srv_server.cli_sock, F_SETFL,
1098: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
1.1 misho 1099:
1.10 misho 1100: rpc_register_srvPing(srv);
1.8 misho 1101:
1.1 misho 1102: return srv;
1.10 misho 1103: err: /* error condition */
1104: close(srv->srv_server.cli_sock);
1.14 misho 1105: array_Destroy(&srv->srv_clients);
1.10 misho 1106: schedEnd(&srv->srv_root);
1.12 misho 1107: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1.14 misho 1108: e_free(srv);
1.10 misho 1109: return NULL;
1.1 misho 1110: }
1111:
1112: /*
1.7 misho 1113: * rpc_srv_endServer() - Destroy RPC server, close all opened sockets and free resources
1114: *
1.6 misho 1115: * @psrv = RPC Server instance
1.1 misho 1116: * return: none
1117: */
1.16 misho 1118: void
1.6 misho 1119: rpc_srv_endServer(rpc_srv_t ** __restrict psrv)
1.1 misho 1120: {
1.10 misho 1121: if (!psrv || !*psrv)
1.1 misho 1122: return;
1123:
1.10 misho 1124: /* if send kill to blob server */
1.17 misho 1125: rpc_srv_endBLOBServer(*psrv);
1.1 misho 1126:
1.10 misho 1127: (*psrv)->srv_kill = 1;
1128: sleep(RPC_SCHED_POLLING);
1.2 misho 1129:
1.17 misho 1130: schedEnd(&(*psrv)->srv_root);
1131:
1.12 misho 1132: pthread_mutex_destroy(&(*psrv)->srv_funcs.mtx);
1.14 misho 1133: e_free(*psrv);
1.6 misho 1134: *psrv = NULL;
1.1 misho 1135: }
1136:
1137: /*
1.7 misho 1138: * rpc_srv_loopServer() - Execute Main server loop and wait for clients requests
1139: *
1.1 misho 1140: * @srv = RPC Server instance
1141: * return: -1 error or 0 ok, infinite loop ...
1142: */
1143: int
1.5 misho 1144: rpc_srv_loopServer(rpc_srv_t * __restrict srv)
1.1 misho 1145: {
1.10 misho 1146: rpc_cli_t *c;
1.1 misho 1147: register int i;
1.12 misho 1148: rpc_func_t *f;
1.10 misho 1149: struct timespec ts = { RPC_SCHED_POLLING, 0 };
1.1 misho 1150:
1151: if (!srv) {
1.10 misho 1152: rpc_SetErr(EINVAL, "Invalid parameter can`t start RPC server");
1.1 misho 1153: return -1;
1154: }
1155:
1.13 misho 1156: if (srv->srv_proto == SOCK_STREAM)
1.14 misho 1157: if (listen(srv->srv_server.cli_sock, array_Size(srv->srv_clients)) == -1) {
1.13 misho 1158: LOGERR;
1159: return -1;
1160: }
1.1 misho 1161:
1.13 misho 1162: if (!schedRead(srv->srv_root, cbProto[srv->srv_proto][CB_ACCEPTCLIENT], srv,
1163: srv->srv_server.cli_sock, NULL, 0)) {
1.10 misho 1164: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1165: return -1;
1166: }
1.7 misho 1167:
1.10 misho 1168: schedPolling(srv->srv_root, &ts, NULL);
1.7 misho 1169: /* main rpc loop */
1.10 misho 1170: schedRun(srv->srv_root, &srv->srv_kill);
1171:
1172: /* close all clients connections & server socket */
1.14 misho 1173: for (i = 0; i < array_Size(srv->srv_clients); i++) {
1174: c = array(srv->srv_clients, i, rpc_cli_t*);
1.10 misho 1175: if (c) {
1176: shutdown(c->cli_sock, SHUT_RDWR);
1177: close(c->cli_sock);
1178:
1179: schedCancelby(srv->srv_root, taskMAX, CRITERIA_ARG, c, NULL);
1.14 misho 1180: ait_freeVars(&RPC_RETVARS(c));
1.10 misho 1181: AIT_FREE_VAL(&c->cli_buf);
1.1 misho 1182: }
1.14 misho 1183: array_Del(srv->srv_clients, i, 42);
1.10 misho 1184: }
1.14 misho 1185: array_Destroy(&srv->srv_clients);
1.2 misho 1186:
1.10 misho 1187: close(srv->srv_server.cli_sock);
1.2 misho 1188:
1.10 misho 1189: /* detach exported calls */
1.12 misho 1190: RPC_FUNCS_LOCK(&srv->srv_funcs);
1191: while ((f = SLIST_FIRST(&srv->srv_funcs))) {
1192: SLIST_REMOVE_HEAD(&srv->srv_funcs, func_next);
1.1 misho 1193:
1.10 misho 1194: AIT_FREE_VAL(&f->func_name);
1.14 misho 1195: e_free(f);
1.1 misho 1196: }
1.12 misho 1197: srv->srv_funcs.avlh_root = NULL;
1198: RPC_FUNCS_UNLOCK(&srv->srv_funcs);
1.1 misho 1199:
1200: return 0;
1201: }
1202:
1203:
1204: /*
1205: * rpc_srv_execCall() Execute registered call from RPC server
1.7 misho 1206: *
1.10 misho 1207: * @cli = RPC client
1.1 misho 1208: * @rpc = IN RPC call structure
1.10 misho 1209: * @funcname = Execute RPC function
1.5 misho 1210: * @args = IN RPC calling arguments from RPC client
1.1 misho 1211: * return: -1 error, !=-1 ok
1212: */
1213: int
1.10 misho 1214: rpc_srv_execCall(rpc_cli_t * __restrict cli, struct tagRPCCall * __restrict rpc,
1215: ait_val_t funcname, array_t * __restrict args)
1.1 misho 1216: {
1217: rpc_callback_t func;
1218:
1.10 misho 1219: if (!cli || !rpc || !AIT_ADDR(&funcname)) {
1.7 misho 1220: rpc_SetErr(EINVAL, "Invalid parameter can`t exec function");
1.1 misho 1221: return -1;
1222: }
1223:
1.10 misho 1224: func = AIT_GET_LIKE(&funcname, rpc_callback_t);
1225: return func(cli, rpc, args);
1.1 misho 1226: }
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