Annotation of libaitrpc/src/srv.c, revision 1.21.2.1
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 $
1.21.2.1! misho 6: * $Id: srv.c,v 1.21 2013/11/14 21:44:14 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;
1.21 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;
1.21 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);
1.21 misho 403: int sock;
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);
1.21 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;
1.21 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:
1.21 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 };
1.21.2.1! misho 452: struct pollfd pfd;
1.13 misho 453:
454: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
455: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
456: TASK_ARG(task), ts, TASK_ARG(task), 0);
457:
458: if (rpc->call_argc) {
459: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
460: if (!f) {
461: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
462: rpc->call_argc ^= rpc->call_argc;
463: rpc->call_rep.ret = RPC_ERROR(-1);
464: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
465: } else {
1.14 misho 466: rpc->call_argc = htons(array_Size(RPC_RETVARS(c)));
1.13 misho 467: /* Go Encapsulate variables */
1.18 misho 468: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
469: RPC_RETVARS(c));
1.13 misho 470: /* Free return values */
1.14 misho 471: ait_freeVars(&c->cli_vars);
1.13 misho 472: if (ret == -1) {
473: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
474: rpc->call_argc ^= rpc->call_argc;
475: rpc->call_rep.ret = RPC_ERROR(-1);
476: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
477: } else
478: wlen += ret;
479: }
480: }
1.7 misho 481:
1.18 misho 482: rpc->call_len = htonl(wlen);
1.7 misho 483:
1.13 misho 484: /* calculate CRC */
485: rpc->call_crc ^= rpc->call_crc;
486: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
487:
488: /* send reply */
1.21.2.1! misho 489: pfd.fd = TASK_FD(task);
! 490: pfd.events = POLLOUT;
! 491: for (; wlen > 0; wlen -= ret, buf += ret) {
! 492: if ((ret = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 ||
! 493: pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
! 494: if (ret)
! 495: LOGERR;
! 496: else
! 497: rpc_SetErr(ETIMEDOUT, "Timeout reached! Server not respond");
! 498: /* close connection */
! 499: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
! 500: TASK_ARG(task), 0, NULL, 0);
! 501: return NULL;
! 502: }
! 503: ret = sendto(TASK_FD(task), buf, MIN(wlen, s->srv_netbuf), MSG_NOSIGNAL,
! 504: &c->cli_sa.sa, c->cli_sa.sa.sa_len);
! 505: if (ret == -1) {
! 506: /* close connection */
! 507: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
! 508: TASK_ARG(task), 0, NULL, 0);
! 509: return NULL;
! 510: }
1.13 misho 511: }
512:
513: return NULL;
514: }
515:
516: static void *
517: rxUDPPacket(sched_task_t *task)
518: {
519: rpc_srv_t *srv = TASK_ARG(task);
520: rpc_cli_t *c = NULL;
521: int len, rlen, noreply;
522: u_short crc, off = 0;
523: u_char buf[USHRT_MAX + 1];
524: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
1.14 misho 525: sockaddr_t sa;
526: socklen_t salen;
1.13 misho 527: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
528:
529: /* receive connect packet */
1.14 misho 530: salen = sa.ss.ss_len = sizeof(sockaddr_t);
1.13 misho 531: rlen = recvfrom(TASK_FD(task), buf, sizeof buf, 0, &sa.sa, &salen);
532: if (rlen < 1)
533: goto end;
534:
535: c = _allocClient(srv, &sa);
536: if (!c)
537: goto end;
538: else {
539: c->cli_sock = TASK_FD(task);
540: memcpy(&c->cli_sa, &sa, sizeof c->cli_sa);
541: memcpy(AIT_GET_BUF(&c->cli_buf), buf, AIT_LEN(&c->cli_buf));
542: /* armed timer for close stateless connection */
543: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
544: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
545: c, ts, c, 0);
546: }
547:
548: do {
549: /* check RPC packet */
550: if (rlen < sizeof(struct tagRPCCall)) {
551: rpc_SetErr(ERPCMISMATCH, "Short RPC packet");
552: break;
553: } else
554: rpc = (struct tagRPCCall*) (AIT_GET_BUF(&c->cli_buf) + off);
555:
1.18 misho 556: len = ntohl(rpc->call_len);
1.13 misho 557: rlen -= len;
558:
559: /* check RPC packet lengths */
560: if (rlen < 0 || len < sizeof(struct tagRPCCall)) {
561: rpc_SetErr(ERPCMISMATCH, "Broken RPC packet length");
562: /* skip entire packet */
563: break;
564: }
565:
566: /* check integrity of packet */
567: crc = ntohs(rpc->call_crc);
568: rpc->call_crc ^= rpc->call_crc;
569: if (crc != crcFletcher16((u_short*) rpc, len / 2)) {
570: rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet");
571:
572: off += len;
573: /* try next packet remaining into buffer */
574: continue;
575: }
576:
577: noreply = RPC_CHK_NOREPLY(rpc);
578:
579: /* check RPC packet session info */
580: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session)) {
581: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
1.18 misho 582:
1.13 misho 583: rpc->call_argc ^= rpc->call_argc;
584: rpc->call_rep.ret = RPC_ERROR(-1);
585: rpc->call_rep.eno = RPC_ERROR(errno);
586: } else {
587: /* execute RPC call */
1.18 misho 588: schedEvent(TASK_ROOT(task), execCall, c,
589: (int) noreply, rpc, len);
1.13 misho 590: }
591:
592: /* send RPC reply */
593: if (!noreply)
594: schedWrite(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
595: c, TASK_FD(task), rpc, len);
596:
597: off += len;
598: } while (rlen > 0);
599:
600: end:
601: schedReadSelf(task);
602: return NULL;
603: }
604:
605: /* ------------------------------------------------------ */
606:
1.16 misho 607: void
1.13 misho 608: rpc_freeBLOBCli(rpc_cli_t * __restrict c)
609: {
610: rpc_srv_t *s = c->cli_parent;
611:
612: schedCancelby(s->srv_blob.root, taskMAX, CRITERIA_ARG, c, NULL);
1.10 misho 613:
614: /* free buffer */
615: AIT_FREE_VAL(&c->cli_buf);
616:
1.14 misho 617: array_Del(s->srv_blob.clients, c->cli_id, 0);
1.10 misho 618: if (c)
1.14 misho 619: e_free(c);
1.13 misho 620: }
621:
622:
623: static void *
624: closeBLOBClient(sched_task_t *task)
625: {
626: int sock = ((rpc_cli_t*) TASK_ARG(task))->cli_sock;
627:
628: rpc_freeBLOBCli(TASK_ARG(task));
629:
630: /* close client socket */
631: shutdown(sock, SHUT_RDWR);
632: close(sock);
1.7 misho 633: return NULL;
634: }
635:
636: static void *
637: txBLOB(sched_task_t *task)
638: {
1.10 misho 639: rpc_cli_t *c = TASK_ARG(task);
640: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1.7 misho 641: int wlen = sizeof(struct tagBLOBHdr);
642:
643: /* send reply */
1.10 misho 644: wlen = send(TASK_FD(task), buf, wlen, MSG_NOSIGNAL);
645: if (wlen == -1 || wlen != sizeof(struct tagBLOBHdr)) {
646: /* close blob connection */
647: schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0);
648: }
1.7 misho 649:
650: return NULL;
651: }
1.4 misho 652:
1.7 misho 653: static void *
654: rxBLOB(sched_task_t *task)
655: {
656: rpc_cli_t *c = TASK_ARG(task);
657: rpc_srv_t *s = c->cli_parent;
658: rpc_blob_t *b;
1.10 misho 659: struct tagBLOBHdr blob;
1.7 misho 660: int rlen;
661:
1.10 misho 662: memset(&blob, 0, sizeof blob);
663: rlen = recv(TASK_FD(task), &blob, sizeof blob, 0);
664: if (rlen < 1) {
665: /* close blob connection */
666: schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0);
1.7 misho 667: return NULL;
668: }
1.5 misho 669:
1.10 misho 670: /* check BLOB packet */
671: if (rlen < sizeof(struct tagBLOBHdr)) {
672: rpc_SetErr(ERPCMISMATCH, "Short BLOB packet");
1.6 misho 673:
1.10 misho 674: schedReadSelf(task);
1.7 misho 675: return NULL;
676: }
1.1 misho 677:
1.7 misho 678: /* check RPC packet session info */
1.15 misho 679: if (rpc_chkPktSession(&blob.hdr_session, &s->srv_session)) {
1.7 misho 680: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
1.10 misho 681: blob.hdr_cmd = error;
1.7 misho 682: goto end;
683: }
684:
685: /* Go to proceed packet ... */
1.10 misho 686: switch (blob.hdr_cmd) {
1.7 misho 687: case get:
1.10 misho 688: if (!(b = rpc_srv_getBLOB(s, ntohl(blob.hdr_var)))) {
689: rpc_SetErr(EINVAL, "Var=%x not found", ntohl(blob.hdr_var));
690: blob.hdr_cmd = no;
691: blob.hdr_ret = RPC_ERROR(-1);
1.7 misho 692: break;
693: } else
1.10 misho 694: blob.hdr_len = htonl(b->blob_len);
1.5 misho 695:
1.7 misho 696: if (rpc_srv_blobMap(s, b) != -1) {
697: /* deliver BLOB variable to client */
1.10 misho 698: blob.hdr_ret = htonl(rpc_srv_sendBLOB(c, b));
1.7 misho 699: rpc_srv_blobUnmap(b);
700: } else {
1.10 misho 701: blob.hdr_cmd = error;
702: blob.hdr_ret = RPC_ERROR(-1);
1.7 misho 703: }
704: break;
705: case set:
1.17 misho 706: if ((b = rpc_srv_registerBLOB(s, ntohl(blob.hdr_len),
707: ntohl(blob.hdr_ret)))) {
1.7 misho 708: /* set new BLOB variable for reply :) */
1.10 misho 709: blob.hdr_var = htonl(b->blob_var);
1.7 misho 710:
711: /* receive BLOB from client */
1.10 misho 712: blob.hdr_ret = htonl(rpc_srv_recvBLOB(c, b));
1.7 misho 713: rpc_srv_blobUnmap(b);
1.5 misho 714: } else {
1.10 misho 715: blob.hdr_cmd = error;
716: blob.hdr_ret = RPC_ERROR(-1);
1.7 misho 717: }
718: break;
719: case unset:
1.11 misho 720: if (rpc_srv_unregisterBLOB(s, ntohl(blob.hdr_var)) == -1) {
1.10 misho 721: blob.hdr_cmd = error;
722: blob.hdr_ret = RPC_ERROR(-1);
1.1 misho 723: }
724: break;
1.7 misho 725: default:
1.10 misho 726: rpc_SetErr(EPROCUNAVAIL, "Unsupported BLOB command %d", blob.hdr_cmd);
727: blob.hdr_cmd = error;
728: blob.hdr_ret = RPC_ERROR(-1);
1.7 misho 729: }
1.1 misho 730:
1.7 misho 731: end:
1.10 misho 732: memcpy(AIT_ADDR(&c->cli_buf), &blob, sizeof blob);
733: schedWrite(TASK_ROOT(task), txBLOB, TASK_ARG(task), TASK_FD(task), NULL, 0);
734: schedReadSelf(task);
1.7 misho 735: return NULL;
1.2 misho 736: }
737:
738: static void *
1.17 misho 739: flushBLOB(sched_task_t *task)
740: {
741: rpc_srv_t *srv = TASK_ARG(task);
742: rpc_blob_t *b, *tmp;
743:
744: TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) {
745: TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node);
746:
747: rpc_srv_blobFree(srv, b);
748: e_free(b);
749: }
750:
751: schedSignalSelf(task);
752: return NULL;
753: }
754:
755: static void *
1.10 misho 756: acceptBLOBClients(sched_task_t *task)
1.2 misho 757: {
1.10 misho 758: rpc_srv_t *srv = TASK_ARG(task);
759: rpc_cli_t *c = NULL;
760: register int i;
1.14 misho 761: socklen_t salen = sizeof(sockaddr_t);
1.21 misho 762: int sock;
1.12 misho 763: #ifdef TCP_NOPUSH
764: int n = 1;
765: #endif
1.7 misho 766:
1.10 misho 767: /* check free slots for connect */
1.14 misho 768: for (i = 0; i < array_Size(srv->srv_blob.clients) &&
769: (c = array(srv->srv_blob.clients, i, rpc_cli_t*)); i++);
1.21 misho 770: if (c) { /* no more free slots! */
771: EVERBOSE(1, "BLOB client quota exceeded! Connection will be shutdown!\n");
772: if ((sock = accept(TASK_FD(task), NULL, NULL)) != -1) {
773: shutdown(sock, SHUT_RDWR);
774: close(sock);
775: }
1.10 misho 776: goto end;
1.21 misho 777: }
778:
1.14 misho 779: c = e_malloc(sizeof(rpc_cli_t));
1.10 misho 780: if (!c) {
1.7 misho 781: LOGERR;
1.10 misho 782: srv->srv_kill = srv->srv_blob.kill = 1;
1.7 misho 783: return NULL;
784: } else {
1.10 misho 785: memset(c, 0, sizeof(rpc_cli_t));
1.14 misho 786: array_Set(srv->srv_blob.clients, i, c);
1.10 misho 787: c->cli_id = i;
788: c->cli_parent = srv;
1.7 misho 789: }
1.4 misho 790:
1.10 misho 791: /* alloc empty buffer */
1.14 misho 792: AIT_SET_BUFSIZ(&c->cli_buf, 0, srv->srv_netbuf);
1.2 misho 793:
1.10 misho 794: /* accept client */
795: c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen);
796: if (c->cli_sock == -1) {
797: LOGERR;
798: AIT_FREE_VAL(&c->cli_buf);
1.14 misho 799: array_Del(srv->srv_blob.clients, i, 42);
1.10 misho 800: goto end;
1.12 misho 801: } else {
802: #ifdef TCP_NOPUSH
803: setsockopt(c->cli_sock, IPPROTO_TCP, TCP_NOPUSH, &n, sizeof n);
804: #endif
1.10 misho 805: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
1.12 misho 806: }
1.2 misho 807:
1.10 misho 808: schedRead(TASK_ROOT(task), rxBLOB, c, c->cli_sock, NULL, 0);
809: end:
810: schedReadSelf(task);
1.7 misho 811: return NULL;
1.1 misho 812: }
813:
1.10 misho 814: /* ------------------------------------------------------ */
1.1 misho 815:
816: /*
1.7 misho 817: * rpc_srv_initBLOBServer() - Init & create BLOB Server
818: *
1.4 misho 819: * @srv = RPC server instance
1.2 misho 820: * @Port = Port for bind server, if Port == 0 default port is selected
821: * @diskDir = Disk place for BLOB file objects
822: * return: -1 == error or 0 bind and created BLOB server instance
823: */
824: int
825: rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, u_short Port, const char *diskDir)
826: {
827: int n = 1;
828:
1.10 misho 829: if (!srv || srv->srv_kill) {
1.7 misho 830: rpc_SetErr(EINVAL, "Invalid parameters can`t init BLOB server");
1.2 misho 831: return -1;
832: }
833:
834: memset(&srv->srv_blob, 0, sizeof srv->srv_blob);
835: if (access(diskDir, R_OK | W_OK) == -1) {
836: LOGERR;
837: return -1;
838: } else
1.7 misho 839: AIT_SET_STR(&srv->srv_blob.dir, diskDir);
1.2 misho 840:
1.10 misho 841: /* init blob list */
842: TAILQ_INIT(&srv->srv_blob.blobs);
843:
1.2 misho 844: srv->srv_blob.server.cli_parent = srv;
1.4 misho 845:
1.14 misho 846: memcpy(&srv->srv_blob.server.cli_sa, &srv->srv_server.cli_sa, sizeof(sockaddr_t));
1.10 misho 847: switch (srv->srv_blob.server.cli_sa.sa.sa_family) {
1.4 misho 848: case AF_INET:
1.10 misho 849: srv->srv_blob.server.cli_sa.sin.sin_port =
850: htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin.sin_port) + 1);
1.4 misho 851: break;
852: case AF_INET6:
1.10 misho 853: srv->srv_blob.server.cli_sa.sin6.sin6_port =
854: htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin6.sin6_port) + 1);
1.4 misho 855: break;
856: case AF_LOCAL:
1.10 misho 857: strlcat(srv->srv_blob.server.cli_sa.sun.sun_path, ".blob",
858: sizeof srv->srv_blob.server.cli_sa.sun.sun_path);
1.4 misho 859: break;
860: default:
1.7 misho 861: AIT_FREE_VAL(&srv->srv_blob.dir);
1.4 misho 862: return -1;
1.2 misho 863: }
864:
1.4 misho 865: /* create BLOB server socket */
1.6 misho 866: srv->srv_blob.server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, SOCK_STREAM, 0);
1.2 misho 867: if (srv->srv_blob.server.cli_sock == -1) {
868: LOGERR;
1.7 misho 869: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 870: return -1;
871: }
872: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
873: LOGERR;
874: close(srv->srv_blob.server.cli_sock);
1.7 misho 875: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 876: return -1;
877: }
1.5 misho 878: n = srv->srv_netbuf;
879: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
880: LOGERR;
881: close(srv->srv_blob.server.cli_sock);
1.7 misho 882: AIT_FREE_VAL(&srv->srv_blob.dir);
1.5 misho 883: return -1;
884: }
885: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
886: LOGERR;
887: close(srv->srv_blob.server.cli_sock);
1.7 misho 888: AIT_FREE_VAL(&srv->srv_blob.dir);
1.5 misho 889: return -1;
890: }
1.6 misho 891: if (bind(srv->srv_blob.server.cli_sock, &srv->srv_blob.server.cli_sa.sa,
892: srv->srv_blob.server.cli_sa.sa.sa_len) == -1) {
1.2 misho 893: LOGERR;
894: close(srv->srv_blob.server.cli_sock);
1.7 misho 895: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 896: return -1;
1.13 misho 897: } else
898: fcntl(srv->srv_blob.server.cli_sock, F_SETFL,
899: fcntl(srv->srv_blob.server.cli_sock, F_GETFL) | O_NONBLOCK);
900:
1.2 misho 901:
1.10 misho 902: /* allocate pool for concurent blob clients */
1.14 misho 903: srv->srv_blob.clients = array_Init(array_Size(srv->srv_clients));
1.2 misho 904: if (!srv->srv_blob.clients) {
1.14 misho 905: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1.2 misho 906: close(srv->srv_blob.server.cli_sock);
1.7 misho 907: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 908: return -1;
1.10 misho 909: }
1.2 misho 910:
1.10 misho 911: /* init blob scheduler */
912: srv->srv_blob.root = schedBegin();
913: if (!srv->srv_blob.root) {
914: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1.14 misho 915: array_Destroy(&srv->srv_blob.clients);
1.10 misho 916: close(srv->srv_blob.server.cli_sock);
917: AIT_FREE_VAL(&srv->srv_blob.dir);
918: return -1;
919: }
1.2 misho 920:
921: return 0;
922: }
923:
924: /*
1.7 misho 925: * rpc_srv_endBLOBServer() - Destroy BLOB server, close all opened sockets and free resources
926: *
1.2 misho 927: * @srv = RPC Server instance
928: * return: none
929: */
1.16 misho 930: void
1.2 misho 931: rpc_srv_endBLOBServer(rpc_srv_t * __restrict srv)
932: {
1.10 misho 933: if (!srv)
1.2 misho 934: return;
935:
1.10 misho 936: srv->srv_blob.kill = 1;
1.17 misho 937:
938: schedEnd(&srv->srv_blob.root);
1.2 misho 939: }
940:
941: /*
1.10 misho 942: * rpc_srv_loopBLOBServer() - Execute Main BLOB server loop and wait for clients requests
1.7 misho 943: *
1.2 misho 944: * @srv = RPC Server instance
945: * return: -1 error or 0 ok, infinite loop ...
946: */
947: int
1.10 misho 948: rpc_srv_loopBLOBServer(rpc_srv_t * __restrict srv)
1.2 misho 949: {
1.10 misho 950: rpc_cli_t *c;
1.2 misho 951: register int i;
1.10 misho 952: rpc_blob_t *b, *tmp;
953: struct timespec ts = { RPC_SCHED_POLLING, 0 };
1.2 misho 954:
1.10 misho 955: if (!srv || srv->srv_kill) {
1.7 misho 956: rpc_SetErr(EINVAL, "Invalid parameter can`t start BLOB server");
1.2 misho 957: return -1;
958: }
959:
1.14 misho 960: if (listen(srv->srv_blob.server.cli_sock, array_Size(srv->srv_blob.clients)) == -1) {
1.2 misho 961: LOGERR;
962: return -1;
1.10 misho 963: }
964:
1.17 misho 965: schedSignal(srv->srv_blob.root, flushBLOB, srv, SIGFBLOB, NULL, 0);
1.10 misho 966: if (!schedRead(srv->srv_blob.root, acceptBLOBClients, srv,
967: srv->srv_blob.server.cli_sock, NULL, 0)) {
968: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
969: return -1;
970: }
1.2 misho 971:
1.10 misho 972: schedPolling(srv->srv_blob.root, &ts, NULL);
973: /* main rpc loop */
974: schedRun(srv->srv_blob.root, &srv->srv_blob.kill);
1.7 misho 975:
1.17 misho 976: /* detach blobs */
977: TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) {
978: TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node);
979:
980: rpc_srv_blobFree(srv, b);
981: e_free(b);
982: }
983:
1.10 misho 984: /* close all clients connections & server socket */
1.14 misho 985: for (i = 0; i < array_Size(srv->srv_blob.clients); i++) {
986: c = array(srv->srv_blob.clients, i, rpc_cli_t*);
1.10 misho 987: if (c) {
988: shutdown(c->cli_sock, SHUT_RDWR);
989: close(c->cli_sock);
990:
991: schedCancelby(srv->srv_blob.root, taskMAX, CRITERIA_ARG, c, NULL);
992: AIT_FREE_VAL(&c->cli_buf);
1.2 misho 993: }
1.14 misho 994: array_Del(srv->srv_blob.clients, i, 42);
1.10 misho 995: }
1.14 misho 996: array_Destroy(&srv->srv_blob.clients);
1.2 misho 997:
1.10 misho 998: close(srv->srv_blob.server.cli_sock);
1.2 misho 999:
1.10 misho 1000: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 1001: return 0;
1002: }
1003:
1004:
1005: /*
1.7 misho 1006: * rpc_srv_initServer() - Init & create RPC Server
1007: *
1.15 misho 1008: * @InstID = Instance for authentication & recognition
1.1 misho 1009: * @concurentClients = Concurent clients at same time to this server
1.10 misho 1010: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
1.4 misho 1011: * @csHost = Host name or address for bind server, if NULL any address
1.1 misho 1012: * @Port = Port for bind server, if Port == 0 default port is selected
1.13 misho 1013: * @proto = Protocol, if == 0 choose SOCK_STREAM
1.1 misho 1014: * return: NULL == error or !=NULL bind and created RPC server instance
1015: */
1016: rpc_srv_t *
1.15 misho 1017: rpc_srv_initServer(u_char InstID, int concurentClients, int netBuf,
1018: const char *csHost, u_short Port, int proto)
1.1 misho 1019: {
1.10 misho 1020: int n = 1;
1.1 misho 1021: rpc_srv_t *srv = NULL;
1.14 misho 1022: sockaddr_t sa = E_SOCKADDR_INIT;
1.1 misho 1023:
1.15 misho 1024: if (!concurentClients || (proto < 0 || proto > SOCK_DGRAM)) {
1.10 misho 1025: rpc_SetErr(EINVAL, "Invalid parameters can`t init RPC server");
1.1 misho 1026: return NULL;
1027: }
1.14 misho 1028: if (!e_gethostbyname(csHost, Port, &sa))
1.10 misho 1029: return NULL;
1.1 misho 1030: if (!Port)
1031: Port = RPC_DEFPORT;
1.13 misho 1032: if (!proto)
1033: proto = SOCK_STREAM;
1.10 misho 1034: if (netBuf < RPC_MIN_BUFSIZ)
1.5 misho 1035: netBuf = BUFSIZ;
1.7 misho 1036: else
1.14 misho 1037: netBuf = E_ALIGN(netBuf, 2); /* align netBuf length */
1.10 misho 1038:
1039: #ifdef HAVE_SRANDOMDEV
1040: srandomdev();
1041: #else
1042: time_t tim;
1043:
1044: srandom((time(&tim) ^ getpid()));
1045: #endif
1.1 misho 1046:
1.14 misho 1047: srv = e_malloc(sizeof(rpc_srv_t));
1.1 misho 1048: if (!srv) {
1049: LOGERR;
1050: return NULL;
1051: } else
1052: memset(srv, 0, sizeof(rpc_srv_t));
1053:
1.13 misho 1054: srv->srv_proto = proto;
1.5 misho 1055: srv->srv_netbuf = netBuf;
1.1 misho 1056: srv->srv_session.sess_version = RPC_VERSION;
1.15 misho 1057: srv->srv_session.sess_instance = InstID;
1.1 misho 1058:
1059: srv->srv_server.cli_parent = srv;
1.10 misho 1060: memcpy(&srv->srv_server.cli_sa, &sa, sizeof srv->srv_server.cli_sa);
1061:
1.12 misho 1062: /* init functions */
1063: pthread_mutex_init(&srv->srv_funcs.mtx, NULL);
1064: SLIST_INIT(&srv->srv_funcs);
1065: AVL_INIT(&srv->srv_funcs);
1.10 misho 1066:
1067: /* init scheduler */
1068: srv->srv_root = schedBegin();
1069: if (!srv->srv_root) {
1070: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1.12 misho 1071: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1.14 misho 1072: e_free(srv);
1.10 misho 1073: return NULL;
1074: }
1075:
1076: /* init pool for clients */
1.14 misho 1077: srv->srv_clients = array_Init(concurentClients);
1.10 misho 1078: if (!srv->srv_clients) {
1.14 misho 1079: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1.10 misho 1080: schedEnd(&srv->srv_root);
1.12 misho 1081: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1.14 misho 1082: e_free(srv);
1.10 misho 1083: return NULL;
1084: }
1.4 misho 1085:
1086: /* create server socket */
1.13 misho 1087: srv->srv_server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, srv->srv_proto, 0);
1.1 misho 1088: if (srv->srv_server.cli_sock == -1) {
1089: LOGERR;
1.14 misho 1090: array_Destroy(&srv->srv_clients);
1.10 misho 1091: schedEnd(&srv->srv_root);
1.12 misho 1092: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1.14 misho 1093: e_free(srv);
1.1 misho 1094: return NULL;
1095: }
1096: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
1097: LOGERR;
1.10 misho 1098: goto err;
1.1 misho 1099: }
1.5 misho 1100: n = srv->srv_netbuf;
1101: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
1102: LOGERR;
1.10 misho 1103: goto err;
1.5 misho 1104: }
1105: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
1106: LOGERR;
1.10 misho 1107: goto err;
1.5 misho 1108: }
1.6 misho 1109: if (bind(srv->srv_server.cli_sock, &srv->srv_server.cli_sa.sa,
1110: srv->srv_server.cli_sa.sa.sa_len) == -1) {
1.1 misho 1111: LOGERR;
1.10 misho 1112: goto err;
1.13 misho 1113: } else
1114: fcntl(srv->srv_server.cli_sock, F_SETFL,
1115: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
1.1 misho 1116:
1.10 misho 1117: rpc_register_srvPing(srv);
1.8 misho 1118:
1.1 misho 1119: return srv;
1.10 misho 1120: err: /* error condition */
1121: close(srv->srv_server.cli_sock);
1.14 misho 1122: array_Destroy(&srv->srv_clients);
1.10 misho 1123: schedEnd(&srv->srv_root);
1.12 misho 1124: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1.14 misho 1125: e_free(srv);
1.10 misho 1126: return NULL;
1.1 misho 1127: }
1128:
1129: /*
1.7 misho 1130: * rpc_srv_endServer() - Destroy RPC server, close all opened sockets and free resources
1131: *
1.6 misho 1132: * @psrv = RPC Server instance
1.1 misho 1133: * return: none
1134: */
1.16 misho 1135: void
1.6 misho 1136: rpc_srv_endServer(rpc_srv_t ** __restrict psrv)
1.1 misho 1137: {
1.10 misho 1138: if (!psrv || !*psrv)
1.1 misho 1139: return;
1140:
1.10 misho 1141: /* if send kill to blob server */
1.17 misho 1142: rpc_srv_endBLOBServer(*psrv);
1.1 misho 1143:
1.10 misho 1144: (*psrv)->srv_kill = 1;
1145: sleep(RPC_SCHED_POLLING);
1.2 misho 1146:
1.17 misho 1147: schedEnd(&(*psrv)->srv_root);
1148:
1.12 misho 1149: pthread_mutex_destroy(&(*psrv)->srv_funcs.mtx);
1.14 misho 1150: e_free(*psrv);
1.6 misho 1151: *psrv = NULL;
1.1 misho 1152: }
1153:
1154: /*
1.7 misho 1155: * rpc_srv_loopServer() - Execute Main server loop and wait for clients requests
1156: *
1.1 misho 1157: * @srv = RPC Server instance
1158: * return: -1 error or 0 ok, infinite loop ...
1159: */
1160: int
1.5 misho 1161: rpc_srv_loopServer(rpc_srv_t * __restrict srv)
1.1 misho 1162: {
1.10 misho 1163: rpc_cli_t *c;
1.1 misho 1164: register int i;
1.12 misho 1165: rpc_func_t *f;
1.10 misho 1166: struct timespec ts = { RPC_SCHED_POLLING, 0 };
1.1 misho 1167:
1168: if (!srv) {
1.10 misho 1169: rpc_SetErr(EINVAL, "Invalid parameter can`t start RPC server");
1.1 misho 1170: return -1;
1171: }
1172:
1.13 misho 1173: if (srv->srv_proto == SOCK_STREAM)
1.14 misho 1174: if (listen(srv->srv_server.cli_sock, array_Size(srv->srv_clients)) == -1) {
1.13 misho 1175: LOGERR;
1176: return -1;
1177: }
1.1 misho 1178:
1.13 misho 1179: if (!schedRead(srv->srv_root, cbProto[srv->srv_proto][CB_ACCEPTCLIENT], srv,
1180: srv->srv_server.cli_sock, NULL, 0)) {
1.10 misho 1181: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1182: return -1;
1183: }
1.7 misho 1184:
1.10 misho 1185: schedPolling(srv->srv_root, &ts, NULL);
1.7 misho 1186: /* main rpc loop */
1.10 misho 1187: schedRun(srv->srv_root, &srv->srv_kill);
1188:
1189: /* close all clients connections & server socket */
1.14 misho 1190: for (i = 0; i < array_Size(srv->srv_clients); i++) {
1191: c = array(srv->srv_clients, i, rpc_cli_t*);
1.10 misho 1192: if (c) {
1193: shutdown(c->cli_sock, SHUT_RDWR);
1194: close(c->cli_sock);
1195:
1196: schedCancelby(srv->srv_root, taskMAX, CRITERIA_ARG, c, NULL);
1.14 misho 1197: ait_freeVars(&RPC_RETVARS(c));
1.10 misho 1198: AIT_FREE_VAL(&c->cli_buf);
1.1 misho 1199: }
1.14 misho 1200: array_Del(srv->srv_clients, i, 42);
1.10 misho 1201: }
1.14 misho 1202: array_Destroy(&srv->srv_clients);
1.2 misho 1203:
1.10 misho 1204: close(srv->srv_server.cli_sock);
1.2 misho 1205:
1.10 misho 1206: /* detach exported calls */
1.12 misho 1207: RPC_FUNCS_LOCK(&srv->srv_funcs);
1208: while ((f = SLIST_FIRST(&srv->srv_funcs))) {
1209: SLIST_REMOVE_HEAD(&srv->srv_funcs, func_next);
1.1 misho 1210:
1.10 misho 1211: AIT_FREE_VAL(&f->func_name);
1.14 misho 1212: e_free(f);
1.1 misho 1213: }
1.12 misho 1214: srv->srv_funcs.avlh_root = NULL;
1215: RPC_FUNCS_UNLOCK(&srv->srv_funcs);
1.1 misho 1216:
1217: return 0;
1218: }
1219:
1220:
1221: /*
1222: * rpc_srv_execCall() Execute registered call from RPC server
1.7 misho 1223: *
1.10 misho 1224: * @cli = RPC client
1.1 misho 1225: * @rpc = IN RPC call structure
1.10 misho 1226: * @funcname = Execute RPC function
1.5 misho 1227: * @args = IN RPC calling arguments from RPC client
1.1 misho 1228: * return: -1 error, !=-1 ok
1229: */
1230: int
1.10 misho 1231: rpc_srv_execCall(rpc_cli_t * __restrict cli, struct tagRPCCall * __restrict rpc,
1232: ait_val_t funcname, array_t * __restrict args)
1.1 misho 1233: {
1234: rpc_callback_t func;
1235:
1.10 misho 1236: if (!cli || !rpc || !AIT_ADDR(&funcname)) {
1.7 misho 1237: rpc_SetErr(EINVAL, "Invalid parameter can`t exec function");
1.1 misho 1238: return -1;
1239: }
1240:
1.10 misho 1241: func = AIT_GET_LIKE(&funcname, rpc_callback_t);
1242: return func(cli, rpc, args);
1.1 misho 1243: }
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