Annotation of libaitrpc/src/srv.c, revision 1.21.2.6
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 $
1.21.2.6! misho 6: * $Id: srv.c,v 1.21.2.5 2013/11/15 09:05:19 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
1.21.2.6! misho 226: rpc_SetErr(ETIMEDOUT, "Timeout reached! Client not respond");
1.19 misho 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
1.21.2.6! misho 349: rpc_SetErr(ETIMEDOUT, "Timeout reached! Client not respond");
1.19 misho 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: }
1.21.2.2 misho 362: len = estlen;
1.8 misho 363:
1.15 misho 364: #if 0
1.18 misho 365: /* check integrity of packet */
366: crc = ntohs(rpc->call_crc);
367: rpc->call_crc ^= rpc->call_crc;
368: if (crc != crcFletcher16((u_short*) rpc, len / 2)) {
369: rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet");
370: return NULL;
371: }
1.15 misho 372: #endif
1.7 misho 373:
1.18 misho 374: noreply = RPC_CHK_NOREPLY(rpc);
1.7 misho 375:
1.18 misho 376: /* check RPC packet session info */
377: if (rpc_chkPktSession(&rpc->call_session, &s->srv_session)) {
378: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
1.7 misho 379:
1.18 misho 380: rpc->call_argc ^= rpc->call_argc;
381: rpc->call_rep.ret = RPC_ERROR(-1);
382: rpc->call_rep.eno = RPC_ERROR(errno);
383: } else {
384: /* execute RPC call */
385: schedEvent(TASK_ROOT(task), execCall, TASK_ARG(task), (int) noreply, rpc, len);
386: }
1.7 misho 387:
1.18 misho 388: /* send RPC reply */
389: if (!noreply)
390: schedWrite(TASK_ROOT(task), cbProto[s->srv_proto][CB_TXPACKET],
391: TASK_ARG(task), TASK_FD(task), rpc, len);
1.7 misho 392:
393: /* lets get next packet */
1.18 misho 394: schedReadSelf(task);
1.7 misho 395: return NULL;
396: }
397:
1.1 misho 398: static void *
1.10 misho 399: acceptClients(sched_task_t *task)
1.1 misho 400: {
1.10 misho 401: rpc_srv_t *srv = TASK_ARG(task);
402: rpc_cli_t *c = NULL;
1.14 misho 403: socklen_t salen = sizeof(sockaddr_t);
1.21 misho 404: int sock;
405: #ifdef TCP_SESSION_TIMEOUT
406: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
407: #endif
1.7 misho 408:
1.13 misho 409: c = _allocClient(srv, NULL);
1.21 misho 410: if (!c) {
411: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
412: if ((sock = accept(TASK_FD(task), NULL, NULL)) != -1) {
413: shutdown(sock, SHUT_RDWR);
414: close(sock);
415: }
1.10 misho 416: goto end;
1.21 misho 417: }
1.10 misho 418:
419: /* accept client */
420: c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen);
421: if (c->cli_sock == -1) {
422: LOGERR;
423: AIT_FREE_VAL(&c->cli_buf);
1.14 misho 424: array_Del(srv->srv_clients, c->cli_id, 42);
1.10 misho 425: goto end;
1.1 misho 426: } else
1.10 misho 427: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
1.1 misho 428:
1.21 misho 429: #ifdef TCP_SESSION_TIMEOUT
430: /* armed timer for close stateless connection */
431: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
432: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT], c,
433: ts, c, 0);
434: #endif
1.13 misho 435: schedRead(TASK_ROOT(task), cbProto[srv->srv_proto][CB_RXPACKET], c,
436: c->cli_sock, NULL, 0);
1.10 misho 437: end:
438: schedReadSelf(task);
439: return NULL;
440: }
1.5 misho 441:
1.7 misho 442:
1.10 misho 443: static void *
1.13 misho 444: txUDPPacket(sched_task_t *task)
1.10 misho 445: {
446: rpc_cli_t *c = TASK_ARG(task);
447: rpc_srv_t *s = c->cli_parent;
1.13 misho 448: rpc_func_t *f = NULL;
1.18 misho 449: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1.13 misho 450: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
1.21.2.4 misho 451: int ret, estlen, wlen = sizeof(struct tagRPCCall);
1.13 misho 452: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
1.21.2.1 misho 453: struct pollfd pfd;
1.13 misho 454:
455: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
456: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
457: TASK_ARG(task), ts, TASK_ARG(task), 0);
458:
459: if (rpc->call_argc) {
460: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
461: if (!f) {
462: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
463: rpc->call_argc ^= rpc->call_argc;
464: rpc->call_rep.ret = RPC_ERROR(-1);
465: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
466: } else {
1.21.2.4 misho 467: /* calc estimated length */
468: estlen = ait_resideVars(RPC_RETVARS(c)) + wlen;
469: if (estlen > AIT_LEN(&c->cli_buf))
470: AIT_RE_BUF(&c->cli_buf, estlen);
471: buf = AIT_GET_BUF(&c->cli_buf);
472: rpc = (struct tagRPCCall*) buf;
473:
1.14 misho 474: rpc->call_argc = htons(array_Size(RPC_RETVARS(c)));
1.13 misho 475: /* Go Encapsulate variables */
1.18 misho 476: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
477: RPC_RETVARS(c));
1.13 misho 478: /* Free return values */
1.14 misho 479: ait_freeVars(&c->cli_vars);
1.13 misho 480: if (ret == -1) {
481: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
482: rpc->call_argc ^= rpc->call_argc;
483: rpc->call_rep.ret = RPC_ERROR(-1);
484: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
485: } else
486: wlen += ret;
487: }
488: }
1.7 misho 489:
1.18 misho 490: rpc->call_len = htonl(wlen);
1.7 misho 491:
1.13 misho 492: /* calculate CRC */
493: rpc->call_crc ^= rpc->call_crc;
494: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
495:
496: /* send reply */
1.21.2.1 misho 497: pfd.fd = TASK_FD(task);
498: pfd.events = POLLOUT;
499: for (; wlen > 0; wlen -= ret, buf += ret) {
500: if ((ret = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 ||
501: pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
502: if (ret)
503: LOGERR;
504: else
1.21.2.6! misho 505: rpc_SetErr(ETIMEDOUT, "Timeout reached! Client not respond");
1.21.2.1 misho 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: }
511: ret = sendto(TASK_FD(task), buf, MIN(wlen, s->srv_netbuf), MSG_NOSIGNAL,
512: &c->cli_sa.sa, c->cli_sa.sa.sa_len);
513: if (ret == -1) {
514: /* close connection */
515: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
516: TASK_ARG(task), 0, NULL, 0);
517: return NULL;
518: }
1.13 misho 519: }
520:
521: return NULL;
522: }
523:
524: static void *
525: rxUDPPacket(sched_task_t *task)
526: {
527: rpc_srv_t *srv = TASK_ARG(task);
528: rpc_cli_t *c = NULL;
1.21.2.2 misho 529: int len, rlen, noreply, estlen;
530: u_short crc;
531: u_char *buf, b[sizeof(struct tagRPCCall)];
532: struct tagRPCCall *rpc = (struct tagRPCCall*) b;
1.14 misho 533: sockaddr_t sa;
534: socklen_t salen;
1.13 misho 535: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
1.21.2.2 misho 536: struct pollfd pfd;
1.13 misho 537:
538: /* receive connect packet */
1.14 misho 539: salen = sa.ss.ss_len = sizeof(sockaddr_t);
1.21.2.2 misho 540: rlen = recvfrom(TASK_FD(task), b, sizeof b, MSG_PEEK, &sa.sa, &salen);
541: if (rlen < sizeof(struct tagRPCCall)) {
542: rpc_SetErr(ERPCMISMATCH, "Short RPC packet");
1.13 misho 543: goto end;
1.21.2.2 misho 544: }
1.13 misho 545:
546: c = _allocClient(srv, &sa);
1.21.2.3 misho 547: if (!c) {
548: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
549: usleep(2000); /* blocked client delay */
1.13 misho 550: goto end;
1.21.2.3 misho 551: } else {
1.21.2.2 misho 552: estlen = ntohl(rpc->call_len);
553: if (estlen > AIT_LEN(&c->cli_buf))
554: AIT_RE_BUF(&c->cli_buf, estlen);
555: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
556: buf = AIT_GET_BUF(&c->cli_buf);
557: len = estlen;
558:
1.13 misho 559: c->cli_sock = TASK_FD(task);
560: memcpy(&c->cli_sa, &sa, sizeof c->cli_sa);
1.21.2.2 misho 561:
1.13 misho 562: /* armed timer for close stateless connection */
563: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
564: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
565: c, ts, c, 0);
566: }
567:
1.21.2.2 misho 568: /* get next part of packet */
569: memset(buf, 0, len);
570: pfd.fd = TASK_FD(task);
571: pfd.events = POLLIN | POLLPRI;
572: for (; len > 0; len -= rlen, buf += rlen) {
573: if ((rlen = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 ||
574: pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
575: if (rlen)
576: LOGERR;
577: else
1.21.2.6! misho 578: rpc_SetErr(ETIMEDOUT, "Timeout reached! Client not respond");
1.21.2.2 misho 579: schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
580: c, 0, NULL, 0);
581: return NULL;
1.13 misho 582: }
1.21.2.3 misho 583: salen = sa.ss.ss_len = sizeof(sockaddr_t);
1.21.2.2 misho 584: rlen = recvfrom(TASK_FD(task), buf, len, 0, &sa.sa, &salen);
585: if (rlen == -1) {
586: /* close connection */
587: schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
588: c, 0, NULL, 0);
589: return NULL;
1.13 misho 590: }
1.21.2.3 misho 591: if (e_addrcmp(&c->cli_sa, &sa, 42))
592: rlen ^= rlen; /* skip if arrive from different address */
1.21.2.2 misho 593: }
594: len = estlen;
1.13 misho 595:
1.21.2.2 misho 596: /* check integrity of packet */
597: crc = ntohs(rpc->call_crc);
598: rpc->call_crc ^= rpc->call_crc;
599: if (crc != crcFletcher16((u_short*) rpc, len / 2)) {
600: rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet");
601: return NULL;
602: }
1.18 misho 603:
1.21.2.2 misho 604: noreply = RPC_CHK_NOREPLY(rpc);
1.13 misho 605:
1.21.2.2 misho 606: /* check RPC packet session info */
607: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session)) {
608: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
1.13 misho 609:
1.21.2.2 misho 610: rpc->call_argc ^= rpc->call_argc;
611: rpc->call_rep.ret = RPC_ERROR(-1);
612: rpc->call_rep.eno = RPC_ERROR(errno);
613: } else {
614: /* execute RPC call */
615: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
616: }
1.13 misho 617:
1.21.2.2 misho 618: /* send RPC reply */
619: if (!noreply)
620: schedWrite(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
621: c, TASK_FD(task), rpc, len);
1.13 misho 622: end:
623: schedReadSelf(task);
624: return NULL;
625: }
626:
627: /* ------------------------------------------------------ */
628:
1.16 misho 629: void
1.13 misho 630: rpc_freeBLOBCli(rpc_cli_t * __restrict c)
631: {
632: rpc_srv_t *s = c->cli_parent;
633:
634: schedCancelby(s->srv_blob.root, taskMAX, CRITERIA_ARG, c, NULL);
1.10 misho 635:
636: /* free buffer */
637: AIT_FREE_VAL(&c->cli_buf);
638:
1.14 misho 639: array_Del(s->srv_blob.clients, c->cli_id, 0);
1.10 misho 640: if (c)
1.14 misho 641: e_free(c);
1.13 misho 642: }
643:
644:
645: static void *
646: closeBLOBClient(sched_task_t *task)
647: {
648: int sock = ((rpc_cli_t*) TASK_ARG(task))->cli_sock;
649:
650: rpc_freeBLOBCli(TASK_ARG(task));
651:
652: /* close client socket */
653: shutdown(sock, SHUT_RDWR);
654: close(sock);
1.7 misho 655: return NULL;
656: }
657:
658: static void *
659: txBLOB(sched_task_t *task)
660: {
1.10 misho 661: rpc_cli_t *c = TASK_ARG(task);
662: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1.7 misho 663: int wlen = sizeof(struct tagBLOBHdr);
664:
665: /* send reply */
1.10 misho 666: wlen = send(TASK_FD(task), buf, wlen, MSG_NOSIGNAL);
667: if (wlen == -1 || wlen != sizeof(struct tagBLOBHdr)) {
668: /* close blob connection */
669: schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0);
670: }
1.7 misho 671:
672: return NULL;
673: }
1.4 misho 674:
1.7 misho 675: static void *
676: rxBLOB(sched_task_t *task)
677: {
678: rpc_cli_t *c = TASK_ARG(task);
679: rpc_srv_t *s = c->cli_parent;
680: rpc_blob_t *b;
1.10 misho 681: struct tagBLOBHdr blob;
1.7 misho 682: int rlen;
683:
1.10 misho 684: memset(&blob, 0, sizeof blob);
685: rlen = recv(TASK_FD(task), &blob, sizeof blob, 0);
686: if (rlen < 1) {
687: /* close blob connection */
688: schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0);
1.7 misho 689: return NULL;
690: }
1.5 misho 691:
1.10 misho 692: /* check BLOB packet */
693: if (rlen < sizeof(struct tagBLOBHdr)) {
694: rpc_SetErr(ERPCMISMATCH, "Short BLOB packet");
1.6 misho 695:
1.10 misho 696: schedReadSelf(task);
1.7 misho 697: return NULL;
698: }
1.1 misho 699:
1.7 misho 700: /* check RPC packet session info */
1.15 misho 701: if (rpc_chkPktSession(&blob.hdr_session, &s->srv_session)) {
1.7 misho 702: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
1.10 misho 703: blob.hdr_cmd = error;
1.7 misho 704: goto end;
705: }
706:
707: /* Go to proceed packet ... */
1.10 misho 708: switch (blob.hdr_cmd) {
1.7 misho 709: case get:
1.10 misho 710: if (!(b = rpc_srv_getBLOB(s, ntohl(blob.hdr_var)))) {
711: rpc_SetErr(EINVAL, "Var=%x not found", ntohl(blob.hdr_var));
712: blob.hdr_cmd = no;
713: blob.hdr_ret = RPC_ERROR(-1);
1.7 misho 714: break;
715: } else
1.10 misho 716: blob.hdr_len = htonl(b->blob_len);
1.5 misho 717:
1.7 misho 718: if (rpc_srv_blobMap(s, b) != -1) {
719: /* deliver BLOB variable to client */
1.10 misho 720: blob.hdr_ret = htonl(rpc_srv_sendBLOB(c, b));
1.7 misho 721: rpc_srv_blobUnmap(b);
722: } else {
1.10 misho 723: blob.hdr_cmd = error;
724: blob.hdr_ret = RPC_ERROR(-1);
1.7 misho 725: }
726: break;
727: case set:
1.17 misho 728: if ((b = rpc_srv_registerBLOB(s, ntohl(blob.hdr_len),
729: ntohl(blob.hdr_ret)))) {
1.7 misho 730: /* set new BLOB variable for reply :) */
1.10 misho 731: blob.hdr_var = htonl(b->blob_var);
1.7 misho 732:
733: /* receive BLOB from client */
1.10 misho 734: blob.hdr_ret = htonl(rpc_srv_recvBLOB(c, b));
1.7 misho 735: rpc_srv_blobUnmap(b);
1.5 misho 736: } else {
1.10 misho 737: blob.hdr_cmd = error;
738: blob.hdr_ret = RPC_ERROR(-1);
1.7 misho 739: }
740: break;
741: case unset:
1.11 misho 742: if (rpc_srv_unregisterBLOB(s, ntohl(blob.hdr_var)) == -1) {
1.10 misho 743: blob.hdr_cmd = error;
744: blob.hdr_ret = RPC_ERROR(-1);
1.1 misho 745: }
746: break;
1.7 misho 747: default:
1.10 misho 748: rpc_SetErr(EPROCUNAVAIL, "Unsupported BLOB command %d", blob.hdr_cmd);
749: blob.hdr_cmd = error;
750: blob.hdr_ret = RPC_ERROR(-1);
1.7 misho 751: }
1.1 misho 752:
1.7 misho 753: end:
1.10 misho 754: memcpy(AIT_ADDR(&c->cli_buf), &blob, sizeof blob);
755: schedWrite(TASK_ROOT(task), txBLOB, TASK_ARG(task), TASK_FD(task), NULL, 0);
756: schedReadSelf(task);
1.7 misho 757: return NULL;
1.2 misho 758: }
759:
760: static void *
1.17 misho 761: flushBLOB(sched_task_t *task)
762: {
763: rpc_srv_t *srv = TASK_ARG(task);
764: rpc_blob_t *b, *tmp;
765:
766: TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) {
767: TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node);
768:
769: rpc_srv_blobFree(srv, b);
770: e_free(b);
771: }
772:
773: schedSignalSelf(task);
774: return NULL;
775: }
776:
777: static void *
1.10 misho 778: acceptBLOBClients(sched_task_t *task)
1.2 misho 779: {
1.10 misho 780: rpc_srv_t *srv = TASK_ARG(task);
781: rpc_cli_t *c = NULL;
782: register int i;
1.14 misho 783: socklen_t salen = sizeof(sockaddr_t);
1.21 misho 784: int sock;
1.12 misho 785: #ifdef TCP_NOPUSH
786: int n = 1;
787: #endif
1.7 misho 788:
1.10 misho 789: /* check free slots for connect */
1.14 misho 790: for (i = 0; i < array_Size(srv->srv_blob.clients) &&
791: (c = array(srv->srv_blob.clients, i, rpc_cli_t*)); i++);
1.21 misho 792: if (c) { /* no more free slots! */
793: EVERBOSE(1, "BLOB client quota exceeded! Connection will be shutdown!\n");
794: if ((sock = accept(TASK_FD(task), NULL, NULL)) != -1) {
795: shutdown(sock, SHUT_RDWR);
796: close(sock);
797: }
1.10 misho 798: goto end;
1.21 misho 799: }
800:
1.14 misho 801: c = e_malloc(sizeof(rpc_cli_t));
1.10 misho 802: if (!c) {
1.7 misho 803: LOGERR;
1.10 misho 804: srv->srv_kill = srv->srv_blob.kill = 1;
1.7 misho 805: return NULL;
806: } else {
1.10 misho 807: memset(c, 0, sizeof(rpc_cli_t));
1.14 misho 808: array_Set(srv->srv_blob.clients, i, c);
1.10 misho 809: c->cli_id = i;
810: c->cli_parent = srv;
1.7 misho 811: }
1.4 misho 812:
1.10 misho 813: /* alloc empty buffer */
1.14 misho 814: AIT_SET_BUFSIZ(&c->cli_buf, 0, srv->srv_netbuf);
1.2 misho 815:
1.10 misho 816: /* accept client */
817: c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen);
818: if (c->cli_sock == -1) {
819: LOGERR;
820: AIT_FREE_VAL(&c->cli_buf);
1.14 misho 821: array_Del(srv->srv_blob.clients, i, 42);
1.10 misho 822: goto end;
1.12 misho 823: } else {
824: #ifdef TCP_NOPUSH
825: setsockopt(c->cli_sock, IPPROTO_TCP, TCP_NOPUSH, &n, sizeof n);
826: #endif
1.10 misho 827: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
1.12 misho 828: }
1.2 misho 829:
1.10 misho 830: schedRead(TASK_ROOT(task), rxBLOB, c, c->cli_sock, NULL, 0);
831: end:
832: schedReadSelf(task);
1.7 misho 833: return NULL;
1.1 misho 834: }
835:
1.10 misho 836: /* ------------------------------------------------------ */
1.1 misho 837:
838: /*
1.7 misho 839: * rpc_srv_initBLOBServer() - Init & create BLOB Server
840: *
1.4 misho 841: * @srv = RPC server instance
1.2 misho 842: * @Port = Port for bind server, if Port == 0 default port is selected
843: * @diskDir = Disk place for BLOB file objects
844: * return: -1 == error or 0 bind and created BLOB server instance
845: */
846: int
847: rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, u_short Port, const char *diskDir)
848: {
849: int n = 1;
850:
1.10 misho 851: if (!srv || srv->srv_kill) {
1.7 misho 852: rpc_SetErr(EINVAL, "Invalid parameters can`t init BLOB server");
1.2 misho 853: return -1;
854: }
855:
856: memset(&srv->srv_blob, 0, sizeof srv->srv_blob);
857: if (access(diskDir, R_OK | W_OK) == -1) {
858: LOGERR;
859: return -1;
860: } else
1.7 misho 861: AIT_SET_STR(&srv->srv_blob.dir, diskDir);
1.2 misho 862:
1.10 misho 863: /* init blob list */
864: TAILQ_INIT(&srv->srv_blob.blobs);
865:
1.2 misho 866: srv->srv_blob.server.cli_parent = srv;
1.4 misho 867:
1.14 misho 868: memcpy(&srv->srv_blob.server.cli_sa, &srv->srv_server.cli_sa, sizeof(sockaddr_t));
1.10 misho 869: switch (srv->srv_blob.server.cli_sa.sa.sa_family) {
1.4 misho 870: case AF_INET:
1.10 misho 871: srv->srv_blob.server.cli_sa.sin.sin_port =
872: htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin.sin_port) + 1);
1.4 misho 873: break;
874: case AF_INET6:
1.10 misho 875: srv->srv_blob.server.cli_sa.sin6.sin6_port =
876: htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin6.sin6_port) + 1);
1.4 misho 877: break;
878: case AF_LOCAL:
1.10 misho 879: strlcat(srv->srv_blob.server.cli_sa.sun.sun_path, ".blob",
880: sizeof srv->srv_blob.server.cli_sa.sun.sun_path);
1.4 misho 881: break;
882: default:
1.7 misho 883: AIT_FREE_VAL(&srv->srv_blob.dir);
1.4 misho 884: return -1;
1.2 misho 885: }
886:
1.4 misho 887: /* create BLOB server socket */
1.6 misho 888: srv->srv_blob.server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, SOCK_STREAM, 0);
1.2 misho 889: if (srv->srv_blob.server.cli_sock == -1) {
890: LOGERR;
1.7 misho 891: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 892: return -1;
893: }
894: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
895: LOGERR;
896: close(srv->srv_blob.server.cli_sock);
1.7 misho 897: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 898: return -1;
899: }
1.5 misho 900: n = srv->srv_netbuf;
901: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
902: LOGERR;
903: close(srv->srv_blob.server.cli_sock);
1.7 misho 904: AIT_FREE_VAL(&srv->srv_blob.dir);
1.5 misho 905: return -1;
906: }
907: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
908: LOGERR;
909: close(srv->srv_blob.server.cli_sock);
1.7 misho 910: AIT_FREE_VAL(&srv->srv_blob.dir);
1.5 misho 911: return -1;
912: }
1.6 misho 913: if (bind(srv->srv_blob.server.cli_sock, &srv->srv_blob.server.cli_sa.sa,
914: srv->srv_blob.server.cli_sa.sa.sa_len) == -1) {
1.2 misho 915: LOGERR;
916: close(srv->srv_blob.server.cli_sock);
1.7 misho 917: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 918: return -1;
1.13 misho 919: } else
920: fcntl(srv->srv_blob.server.cli_sock, F_SETFL,
921: fcntl(srv->srv_blob.server.cli_sock, F_GETFL) | O_NONBLOCK);
922:
1.2 misho 923:
1.10 misho 924: /* allocate pool for concurent blob clients */
1.14 misho 925: srv->srv_blob.clients = array_Init(array_Size(srv->srv_clients));
1.2 misho 926: if (!srv->srv_blob.clients) {
1.14 misho 927: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1.2 misho 928: close(srv->srv_blob.server.cli_sock);
1.7 misho 929: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 930: return -1;
1.10 misho 931: }
1.2 misho 932:
1.10 misho 933: /* init blob scheduler */
934: srv->srv_blob.root = schedBegin();
935: if (!srv->srv_blob.root) {
936: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1.14 misho 937: array_Destroy(&srv->srv_blob.clients);
1.10 misho 938: close(srv->srv_blob.server.cli_sock);
939: AIT_FREE_VAL(&srv->srv_blob.dir);
940: return -1;
941: }
1.2 misho 942:
943: return 0;
944: }
945:
946: /*
1.7 misho 947: * rpc_srv_endBLOBServer() - Destroy BLOB server, close all opened sockets and free resources
948: *
1.2 misho 949: * @srv = RPC Server instance
950: * return: none
951: */
1.16 misho 952: void
1.2 misho 953: rpc_srv_endBLOBServer(rpc_srv_t * __restrict srv)
954: {
1.10 misho 955: if (!srv)
1.2 misho 956: return;
957:
1.10 misho 958: srv->srv_blob.kill = 1;
1.17 misho 959:
960: schedEnd(&srv->srv_blob.root);
1.2 misho 961: }
962:
963: /*
1.10 misho 964: * rpc_srv_loopBLOBServer() - Execute Main BLOB server loop and wait for clients requests
1.7 misho 965: *
1.2 misho 966: * @srv = RPC Server instance
967: * return: -1 error or 0 ok, infinite loop ...
968: */
969: int
1.10 misho 970: rpc_srv_loopBLOBServer(rpc_srv_t * __restrict srv)
1.2 misho 971: {
1.10 misho 972: rpc_cli_t *c;
1.2 misho 973: register int i;
1.10 misho 974: rpc_blob_t *b, *tmp;
975: struct timespec ts = { RPC_SCHED_POLLING, 0 };
1.2 misho 976:
1.10 misho 977: if (!srv || srv->srv_kill) {
1.7 misho 978: rpc_SetErr(EINVAL, "Invalid parameter can`t start BLOB server");
1.2 misho 979: return -1;
980: }
981:
1.14 misho 982: if (listen(srv->srv_blob.server.cli_sock, array_Size(srv->srv_blob.clients)) == -1) {
1.2 misho 983: LOGERR;
984: return -1;
1.10 misho 985: }
986:
1.17 misho 987: schedSignal(srv->srv_blob.root, flushBLOB, srv, SIGFBLOB, NULL, 0);
1.10 misho 988: if (!schedRead(srv->srv_blob.root, acceptBLOBClients, srv,
989: srv->srv_blob.server.cli_sock, NULL, 0)) {
990: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
991: return -1;
992: }
1.2 misho 993:
1.10 misho 994: schedPolling(srv->srv_blob.root, &ts, NULL);
995: /* main rpc loop */
996: schedRun(srv->srv_blob.root, &srv->srv_blob.kill);
1.7 misho 997:
1.17 misho 998: /* detach blobs */
999: TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) {
1000: TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node);
1001:
1002: rpc_srv_blobFree(srv, b);
1003: e_free(b);
1004: }
1005:
1.10 misho 1006: /* close all clients connections & server socket */
1.14 misho 1007: for (i = 0; i < array_Size(srv->srv_blob.clients); i++) {
1008: c = array(srv->srv_blob.clients, i, rpc_cli_t*);
1.10 misho 1009: if (c) {
1010: shutdown(c->cli_sock, SHUT_RDWR);
1011: close(c->cli_sock);
1012:
1013: schedCancelby(srv->srv_blob.root, taskMAX, CRITERIA_ARG, c, NULL);
1014: AIT_FREE_VAL(&c->cli_buf);
1.2 misho 1015: }
1.14 misho 1016: array_Del(srv->srv_blob.clients, i, 42);
1.10 misho 1017: }
1.14 misho 1018: array_Destroy(&srv->srv_blob.clients);
1.2 misho 1019:
1.10 misho 1020: close(srv->srv_blob.server.cli_sock);
1.2 misho 1021:
1.10 misho 1022: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 1023: return 0;
1024: }
1025:
1026:
1027: /*
1.7 misho 1028: * rpc_srv_initServer() - Init & create RPC Server
1029: *
1.15 misho 1030: * @InstID = Instance for authentication & recognition
1.1 misho 1031: * @concurentClients = Concurent clients at same time to this server
1.10 misho 1032: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
1.4 misho 1033: * @csHost = Host name or address for bind server, if NULL any address
1.1 misho 1034: * @Port = Port for bind server, if Port == 0 default port is selected
1.13 misho 1035: * @proto = Protocol, if == 0 choose SOCK_STREAM
1.1 misho 1036: * return: NULL == error or !=NULL bind and created RPC server instance
1037: */
1038: rpc_srv_t *
1.15 misho 1039: rpc_srv_initServer(u_char InstID, int concurentClients, int netBuf,
1040: const char *csHost, u_short Port, int proto)
1.1 misho 1041: {
1.10 misho 1042: int n = 1;
1.1 misho 1043: rpc_srv_t *srv = NULL;
1.14 misho 1044: sockaddr_t sa = E_SOCKADDR_INIT;
1.1 misho 1045:
1.15 misho 1046: if (!concurentClients || (proto < 0 || proto > SOCK_DGRAM)) {
1.10 misho 1047: rpc_SetErr(EINVAL, "Invalid parameters can`t init RPC server");
1.1 misho 1048: return NULL;
1049: }
1.14 misho 1050: if (!e_gethostbyname(csHost, Port, &sa))
1.10 misho 1051: return NULL;
1.1 misho 1052: if (!Port)
1053: Port = RPC_DEFPORT;
1.13 misho 1054: if (!proto)
1055: proto = SOCK_STREAM;
1.10 misho 1056: if (netBuf < RPC_MIN_BUFSIZ)
1.5 misho 1057: netBuf = BUFSIZ;
1.7 misho 1058: else
1.14 misho 1059: netBuf = E_ALIGN(netBuf, 2); /* align netBuf length */
1.10 misho 1060:
1061: #ifdef HAVE_SRANDOMDEV
1062: srandomdev();
1063: #else
1064: time_t tim;
1065:
1066: srandom((time(&tim) ^ getpid()));
1067: #endif
1.1 misho 1068:
1.14 misho 1069: srv = e_malloc(sizeof(rpc_srv_t));
1.1 misho 1070: if (!srv) {
1071: LOGERR;
1072: return NULL;
1073: } else
1074: memset(srv, 0, sizeof(rpc_srv_t));
1075:
1.13 misho 1076: srv->srv_proto = proto;
1.5 misho 1077: srv->srv_netbuf = netBuf;
1.1 misho 1078: srv->srv_session.sess_version = RPC_VERSION;
1.15 misho 1079: srv->srv_session.sess_instance = InstID;
1.1 misho 1080:
1081: srv->srv_server.cli_parent = srv;
1.10 misho 1082: memcpy(&srv->srv_server.cli_sa, &sa, sizeof srv->srv_server.cli_sa);
1083:
1.12 misho 1084: /* init functions */
1085: pthread_mutex_init(&srv->srv_funcs.mtx, NULL);
1086: SLIST_INIT(&srv->srv_funcs);
1087: AVL_INIT(&srv->srv_funcs);
1.10 misho 1088:
1089: /* init scheduler */
1090: srv->srv_root = schedBegin();
1091: if (!srv->srv_root) {
1092: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1.12 misho 1093: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1.14 misho 1094: e_free(srv);
1.10 misho 1095: return NULL;
1096: }
1097:
1098: /* init pool for clients */
1.14 misho 1099: srv->srv_clients = array_Init(concurentClients);
1.10 misho 1100: if (!srv->srv_clients) {
1.14 misho 1101: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1.10 misho 1102: schedEnd(&srv->srv_root);
1.12 misho 1103: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1.14 misho 1104: e_free(srv);
1.10 misho 1105: return NULL;
1106: }
1.4 misho 1107:
1108: /* create server socket */
1.13 misho 1109: srv->srv_server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, srv->srv_proto, 0);
1.1 misho 1110: if (srv->srv_server.cli_sock == -1) {
1111: LOGERR;
1.14 misho 1112: array_Destroy(&srv->srv_clients);
1.10 misho 1113: schedEnd(&srv->srv_root);
1.12 misho 1114: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1.14 misho 1115: e_free(srv);
1.1 misho 1116: return NULL;
1117: }
1118: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
1119: LOGERR;
1.10 misho 1120: goto err;
1.1 misho 1121: }
1.5 misho 1122: n = srv->srv_netbuf;
1123: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
1124: LOGERR;
1.10 misho 1125: goto err;
1.5 misho 1126: }
1127: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
1128: LOGERR;
1.10 misho 1129: goto err;
1.5 misho 1130: }
1.6 misho 1131: if (bind(srv->srv_server.cli_sock, &srv->srv_server.cli_sa.sa,
1132: srv->srv_server.cli_sa.sa.sa_len) == -1) {
1.1 misho 1133: LOGERR;
1.10 misho 1134: goto err;
1.13 misho 1135: } else
1136: fcntl(srv->srv_server.cli_sock, F_SETFL,
1137: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
1.1 misho 1138:
1.10 misho 1139: rpc_register_srvPing(srv);
1.8 misho 1140:
1.1 misho 1141: return srv;
1.10 misho 1142: err: /* error condition */
1143: close(srv->srv_server.cli_sock);
1.14 misho 1144: array_Destroy(&srv->srv_clients);
1.10 misho 1145: schedEnd(&srv->srv_root);
1.12 misho 1146: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1.14 misho 1147: e_free(srv);
1.10 misho 1148: return NULL;
1.1 misho 1149: }
1150:
1151: /*
1.7 misho 1152: * rpc_srv_endServer() - Destroy RPC server, close all opened sockets and free resources
1153: *
1.6 misho 1154: * @psrv = RPC Server instance
1.1 misho 1155: * return: none
1156: */
1.16 misho 1157: void
1.6 misho 1158: rpc_srv_endServer(rpc_srv_t ** __restrict psrv)
1.1 misho 1159: {
1.10 misho 1160: if (!psrv || !*psrv)
1.1 misho 1161: return;
1162:
1.10 misho 1163: /* if send kill to blob server */
1.17 misho 1164: rpc_srv_endBLOBServer(*psrv);
1.1 misho 1165:
1.10 misho 1166: (*psrv)->srv_kill = 1;
1167: sleep(RPC_SCHED_POLLING);
1.2 misho 1168:
1.17 misho 1169: schedEnd(&(*psrv)->srv_root);
1170:
1.12 misho 1171: pthread_mutex_destroy(&(*psrv)->srv_funcs.mtx);
1.14 misho 1172: e_free(*psrv);
1.6 misho 1173: *psrv = NULL;
1.1 misho 1174: }
1175:
1176: /*
1.7 misho 1177: * rpc_srv_loopServer() - Execute Main server loop and wait for clients requests
1178: *
1.1 misho 1179: * @srv = RPC Server instance
1180: * return: -1 error or 0 ok, infinite loop ...
1181: */
1182: int
1.5 misho 1183: rpc_srv_loopServer(rpc_srv_t * __restrict srv)
1.1 misho 1184: {
1.10 misho 1185: rpc_cli_t *c;
1.1 misho 1186: register int i;
1.12 misho 1187: rpc_func_t *f;
1.10 misho 1188: struct timespec ts = { RPC_SCHED_POLLING, 0 };
1.1 misho 1189:
1190: if (!srv) {
1.10 misho 1191: rpc_SetErr(EINVAL, "Invalid parameter can`t start RPC server");
1.1 misho 1192: return -1;
1193: }
1194:
1.13 misho 1195: if (srv->srv_proto == SOCK_STREAM)
1.14 misho 1196: if (listen(srv->srv_server.cli_sock, array_Size(srv->srv_clients)) == -1) {
1.13 misho 1197: LOGERR;
1198: return -1;
1199: }
1.1 misho 1200:
1.13 misho 1201: if (!schedRead(srv->srv_root, cbProto[srv->srv_proto][CB_ACCEPTCLIENT], srv,
1202: srv->srv_server.cli_sock, NULL, 0)) {
1.10 misho 1203: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1204: return -1;
1205: }
1.7 misho 1206:
1.10 misho 1207: schedPolling(srv->srv_root, &ts, NULL);
1.7 misho 1208: /* main rpc loop */
1.10 misho 1209: schedRun(srv->srv_root, &srv->srv_kill);
1210:
1211: /* close all clients connections & server socket */
1.14 misho 1212: for (i = 0; i < array_Size(srv->srv_clients); i++) {
1213: c = array(srv->srv_clients, i, rpc_cli_t*);
1.10 misho 1214: if (c) {
1215: shutdown(c->cli_sock, SHUT_RDWR);
1216: close(c->cli_sock);
1217:
1218: schedCancelby(srv->srv_root, taskMAX, CRITERIA_ARG, c, NULL);
1.14 misho 1219: ait_freeVars(&RPC_RETVARS(c));
1.10 misho 1220: AIT_FREE_VAL(&c->cli_buf);
1.1 misho 1221: }
1.14 misho 1222: array_Del(srv->srv_clients, i, 42);
1.10 misho 1223: }
1.14 misho 1224: array_Destroy(&srv->srv_clients);
1.2 misho 1225:
1.10 misho 1226: close(srv->srv_server.cli_sock);
1.2 misho 1227:
1.10 misho 1228: /* detach exported calls */
1.12 misho 1229: RPC_FUNCS_LOCK(&srv->srv_funcs);
1230: while ((f = SLIST_FIRST(&srv->srv_funcs))) {
1231: SLIST_REMOVE_HEAD(&srv->srv_funcs, func_next);
1.1 misho 1232:
1.10 misho 1233: AIT_FREE_VAL(&f->func_name);
1.14 misho 1234: e_free(f);
1.1 misho 1235: }
1.12 misho 1236: srv->srv_funcs.avlh_root = NULL;
1237: RPC_FUNCS_UNLOCK(&srv->srv_funcs);
1.1 misho 1238:
1239: return 0;
1240: }
1241:
1242:
1243: /*
1244: * rpc_srv_execCall() Execute registered call from RPC server
1.7 misho 1245: *
1.10 misho 1246: * @cli = RPC client
1.1 misho 1247: * @rpc = IN RPC call structure
1.10 misho 1248: * @funcname = Execute RPC function
1.5 misho 1249: * @args = IN RPC calling arguments from RPC client
1.1 misho 1250: * return: -1 error, !=-1 ok
1251: */
1252: int
1.10 misho 1253: rpc_srv_execCall(rpc_cli_t * __restrict cli, struct tagRPCCall * __restrict rpc,
1254: ait_val_t funcname, array_t * __restrict args)
1.1 misho 1255: {
1256: rpc_callback_t func;
1257:
1.10 misho 1258: if (!cli || !rpc || !AIT_ADDR(&funcname)) {
1.7 misho 1259: rpc_SetErr(EINVAL, "Invalid parameter can`t exec function");
1.1 misho 1260: return -1;
1261: }
1262:
1.10 misho 1263: func = AIT_GET_LIKE(&funcname, rpc_callback_t);
1264: return func(cli, rpc, args);
1.1 misho 1265: }
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