Annotation of libaitrpc/src/srv.c, revision 1.21.2.3
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 $
1.21.2.3! misho 6: * $Id: srv.c,v 1.21.2.2 2013/11/14 23:38:41 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: }
1.21.2.2 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;
451: int ret, wlen = sizeof(struct tagRPCCall);
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 {
1.14 misho 467: rpc->call_argc = htons(array_Size(RPC_RETVARS(c)));
1.13 misho 468: /* Go Encapsulate variables */
1.18 misho 469: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
470: RPC_RETVARS(c));
1.13 misho 471: /* Free return values */
1.14 misho 472: ait_freeVars(&c->cli_vars);
1.13 misho 473: if (ret == -1) {
474: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
475: rpc->call_argc ^= rpc->call_argc;
476: rpc->call_rep.ret = RPC_ERROR(-1);
477: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
478: } else
479: wlen += ret;
480: }
481: }
1.7 misho 482:
1.18 misho 483: rpc->call_len = htonl(wlen);
1.7 misho 484:
1.13 misho 485: /* calculate CRC */
486: rpc->call_crc ^= rpc->call_crc;
487: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
488:
489: /* send reply */
1.21.2.1 misho 490: pfd.fd = TASK_FD(task);
491: pfd.events = POLLOUT;
492: for (; wlen > 0; wlen -= ret, buf += ret) {
493: if ((ret = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 ||
494: pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
495: if (ret)
496: LOGERR;
497: else
498: rpc_SetErr(ETIMEDOUT, "Timeout reached! Server not respond");
499: /* close connection */
500: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
501: TASK_ARG(task), 0, NULL, 0);
502: return NULL;
503: }
504: ret = sendto(TASK_FD(task), buf, MIN(wlen, s->srv_netbuf), MSG_NOSIGNAL,
505: &c->cli_sa.sa, c->cli_sa.sa.sa_len);
506: if (ret == -1) {
507: /* close connection */
508: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
509: TASK_ARG(task), 0, NULL, 0);
510: return NULL;
511: }
1.13 misho 512: }
513:
514: return NULL;
515: }
516:
517: static void *
518: rxUDPPacket(sched_task_t *task)
519: {
520: rpc_srv_t *srv = TASK_ARG(task);
521: rpc_cli_t *c = NULL;
1.21.2.2 misho 522: int len, rlen, noreply, estlen;
523: u_short crc;
524: u_char *buf, b[sizeof(struct tagRPCCall)];
525: struct tagRPCCall *rpc = (struct tagRPCCall*) b;
1.14 misho 526: sockaddr_t sa;
527: socklen_t salen;
1.13 misho 528: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
1.21.2.2 misho 529: struct pollfd pfd;
1.13 misho 530:
531: /* receive connect packet */
1.14 misho 532: salen = sa.ss.ss_len = sizeof(sockaddr_t);
1.21.2.2 misho 533: rlen = recvfrom(TASK_FD(task), b, sizeof b, MSG_PEEK, &sa.sa, &salen);
534: if (rlen < sizeof(struct tagRPCCall)) {
535: rpc_SetErr(ERPCMISMATCH, "Short RPC packet");
1.13 misho 536: goto end;
1.21.2.2 misho 537: }
1.13 misho 538:
539: c = _allocClient(srv, &sa);
1.21.2.3! misho 540: if (!c) {
! 541: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
! 542: usleep(2000); /* blocked client delay */
1.13 misho 543: goto end;
1.21.2.3! misho 544: } else {
1.21.2.2 misho 545: estlen = ntohl(rpc->call_len);
546: if (estlen > AIT_LEN(&c->cli_buf))
547: AIT_RE_BUF(&c->cli_buf, estlen);
548: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
549: buf = AIT_GET_BUF(&c->cli_buf);
550: len = estlen;
551:
1.13 misho 552: c->cli_sock = TASK_FD(task);
553: memcpy(&c->cli_sa, &sa, sizeof c->cli_sa);
1.21.2.2 misho 554:
1.13 misho 555: /* armed timer for close stateless connection */
556: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
557: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
558: c, ts, c, 0);
559: }
560:
1.21.2.2 misho 561: /* get next part of packet */
562: memset(buf, 0, len);
563: pfd.fd = TASK_FD(task);
564: pfd.events = POLLIN | POLLPRI;
565: for (; len > 0; len -= rlen, buf += rlen) {
566: if ((rlen = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 ||
567: pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
568: if (rlen)
569: LOGERR;
570: else
571: rpc_SetErr(ETIMEDOUT, "Timeout reached! Server not respond");
572: schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
573: c, 0, NULL, 0);
574: return NULL;
1.13 misho 575: }
1.21.2.3! misho 576: salen = sa.ss.ss_len = sizeof(sockaddr_t);
1.21.2.2 misho 577: rlen = recvfrom(TASK_FD(task), buf, len, 0, &sa.sa, &salen);
578: if (rlen == -1) {
579: /* close connection */
580: schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
581: c, 0, NULL, 0);
582: return NULL;
1.13 misho 583: }
1.21.2.3! misho 584: if (e_addrcmp(&c->cli_sa, &sa, 42))
! 585: rlen ^= rlen; /* skip if arrive from different address */
1.21.2.2 misho 586: }
587: len = estlen;
1.13 misho 588:
1.21.2.2 misho 589: /* check integrity of packet */
590: crc = ntohs(rpc->call_crc);
591: rpc->call_crc ^= rpc->call_crc;
592: if (crc != crcFletcher16((u_short*) rpc, len / 2)) {
593: rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet");
594: return NULL;
595: }
1.18 misho 596:
1.21.2.2 misho 597: noreply = RPC_CHK_NOREPLY(rpc);
1.13 misho 598:
1.21.2.2 misho 599: /* check RPC packet session info */
600: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session)) {
601: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
1.13 misho 602:
1.21.2.2 misho 603: rpc->call_argc ^= rpc->call_argc;
604: rpc->call_rep.ret = RPC_ERROR(-1);
605: rpc->call_rep.eno = RPC_ERROR(errno);
606: } else {
607: /* execute RPC call */
608: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
609: }
1.13 misho 610:
1.21.2.2 misho 611: /* send RPC reply */
612: if (!noreply)
613: schedWrite(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
614: c, TASK_FD(task), rpc, len);
1.13 misho 615: end:
616: schedReadSelf(task);
617: return NULL;
618: }
619:
620: /* ------------------------------------------------------ */
621:
1.16 misho 622: void
1.13 misho 623: rpc_freeBLOBCli(rpc_cli_t * __restrict c)
624: {
625: rpc_srv_t *s = c->cli_parent;
626:
627: schedCancelby(s->srv_blob.root, taskMAX, CRITERIA_ARG, c, NULL);
1.10 misho 628:
629: /* free buffer */
630: AIT_FREE_VAL(&c->cli_buf);
631:
1.14 misho 632: array_Del(s->srv_blob.clients, c->cli_id, 0);
1.10 misho 633: if (c)
1.14 misho 634: e_free(c);
1.13 misho 635: }
636:
637:
638: static void *
639: closeBLOBClient(sched_task_t *task)
640: {
641: int sock = ((rpc_cli_t*) TASK_ARG(task))->cli_sock;
642:
643: rpc_freeBLOBCli(TASK_ARG(task));
644:
645: /* close client socket */
646: shutdown(sock, SHUT_RDWR);
647: close(sock);
1.7 misho 648: return NULL;
649: }
650:
651: static void *
652: txBLOB(sched_task_t *task)
653: {
1.10 misho 654: rpc_cli_t *c = TASK_ARG(task);
655: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1.7 misho 656: int wlen = sizeof(struct tagBLOBHdr);
657:
658: /* send reply */
1.10 misho 659: wlen = send(TASK_FD(task), buf, wlen, MSG_NOSIGNAL);
660: if (wlen == -1 || wlen != sizeof(struct tagBLOBHdr)) {
661: /* close blob connection */
662: schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0);
663: }
1.7 misho 664:
665: return NULL;
666: }
1.4 misho 667:
1.7 misho 668: static void *
669: rxBLOB(sched_task_t *task)
670: {
671: rpc_cli_t *c = TASK_ARG(task);
672: rpc_srv_t *s = c->cli_parent;
673: rpc_blob_t *b;
1.10 misho 674: struct tagBLOBHdr blob;
1.7 misho 675: int rlen;
676:
1.10 misho 677: memset(&blob, 0, sizeof blob);
678: rlen = recv(TASK_FD(task), &blob, sizeof blob, 0);
679: if (rlen < 1) {
680: /* close blob connection */
681: schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0);
1.7 misho 682: return NULL;
683: }
1.5 misho 684:
1.10 misho 685: /* check BLOB packet */
686: if (rlen < sizeof(struct tagBLOBHdr)) {
687: rpc_SetErr(ERPCMISMATCH, "Short BLOB packet");
1.6 misho 688:
1.10 misho 689: schedReadSelf(task);
1.7 misho 690: return NULL;
691: }
1.1 misho 692:
1.7 misho 693: /* check RPC packet session info */
1.15 misho 694: if (rpc_chkPktSession(&blob.hdr_session, &s->srv_session)) {
1.7 misho 695: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
1.10 misho 696: blob.hdr_cmd = error;
1.7 misho 697: goto end;
698: }
699:
700: /* Go to proceed packet ... */
1.10 misho 701: switch (blob.hdr_cmd) {
1.7 misho 702: case get:
1.10 misho 703: if (!(b = rpc_srv_getBLOB(s, ntohl(blob.hdr_var)))) {
704: rpc_SetErr(EINVAL, "Var=%x not found", ntohl(blob.hdr_var));
705: blob.hdr_cmd = no;
706: blob.hdr_ret = RPC_ERROR(-1);
1.7 misho 707: break;
708: } else
1.10 misho 709: blob.hdr_len = htonl(b->blob_len);
1.5 misho 710:
1.7 misho 711: if (rpc_srv_blobMap(s, b) != -1) {
712: /* deliver BLOB variable to client */
1.10 misho 713: blob.hdr_ret = htonl(rpc_srv_sendBLOB(c, b));
1.7 misho 714: rpc_srv_blobUnmap(b);
715: } else {
1.10 misho 716: blob.hdr_cmd = error;
717: blob.hdr_ret = RPC_ERROR(-1);
1.7 misho 718: }
719: break;
720: case set:
1.17 misho 721: if ((b = rpc_srv_registerBLOB(s, ntohl(blob.hdr_len),
722: ntohl(blob.hdr_ret)))) {
1.7 misho 723: /* set new BLOB variable for reply :) */
1.10 misho 724: blob.hdr_var = htonl(b->blob_var);
1.7 misho 725:
726: /* receive BLOB from client */
1.10 misho 727: blob.hdr_ret = htonl(rpc_srv_recvBLOB(c, b));
1.7 misho 728: rpc_srv_blobUnmap(b);
1.5 misho 729: } else {
1.10 misho 730: blob.hdr_cmd = error;
731: blob.hdr_ret = RPC_ERROR(-1);
1.7 misho 732: }
733: break;
734: case unset:
1.11 misho 735: if (rpc_srv_unregisterBLOB(s, ntohl(blob.hdr_var)) == -1) {
1.10 misho 736: blob.hdr_cmd = error;
737: blob.hdr_ret = RPC_ERROR(-1);
1.1 misho 738: }
739: break;
1.7 misho 740: default:
1.10 misho 741: rpc_SetErr(EPROCUNAVAIL, "Unsupported BLOB command %d", blob.hdr_cmd);
742: blob.hdr_cmd = error;
743: blob.hdr_ret = RPC_ERROR(-1);
1.7 misho 744: }
1.1 misho 745:
1.7 misho 746: end:
1.10 misho 747: memcpy(AIT_ADDR(&c->cli_buf), &blob, sizeof blob);
748: schedWrite(TASK_ROOT(task), txBLOB, TASK_ARG(task), TASK_FD(task), NULL, 0);
749: schedReadSelf(task);
1.7 misho 750: return NULL;
1.2 misho 751: }
752:
753: static void *
1.17 misho 754: flushBLOB(sched_task_t *task)
755: {
756: rpc_srv_t *srv = TASK_ARG(task);
757: rpc_blob_t *b, *tmp;
758:
759: TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) {
760: TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node);
761:
762: rpc_srv_blobFree(srv, b);
763: e_free(b);
764: }
765:
766: schedSignalSelf(task);
767: return NULL;
768: }
769:
770: static void *
1.10 misho 771: acceptBLOBClients(sched_task_t *task)
1.2 misho 772: {
1.10 misho 773: rpc_srv_t *srv = TASK_ARG(task);
774: rpc_cli_t *c = NULL;
775: register int i;
1.14 misho 776: socklen_t salen = sizeof(sockaddr_t);
1.21 misho 777: int sock;
1.12 misho 778: #ifdef TCP_NOPUSH
779: int n = 1;
780: #endif
1.7 misho 781:
1.10 misho 782: /* check free slots for connect */
1.14 misho 783: for (i = 0; i < array_Size(srv->srv_blob.clients) &&
784: (c = array(srv->srv_blob.clients, i, rpc_cli_t*)); i++);
1.21 misho 785: if (c) { /* no more free slots! */
786: EVERBOSE(1, "BLOB client quota exceeded! Connection will be shutdown!\n");
787: if ((sock = accept(TASK_FD(task), NULL, NULL)) != -1) {
788: shutdown(sock, SHUT_RDWR);
789: close(sock);
790: }
1.10 misho 791: goto end;
1.21 misho 792: }
793:
1.14 misho 794: c = e_malloc(sizeof(rpc_cli_t));
1.10 misho 795: if (!c) {
1.7 misho 796: LOGERR;
1.10 misho 797: srv->srv_kill = srv->srv_blob.kill = 1;
1.7 misho 798: return NULL;
799: } else {
1.10 misho 800: memset(c, 0, sizeof(rpc_cli_t));
1.14 misho 801: array_Set(srv->srv_blob.clients, i, c);
1.10 misho 802: c->cli_id = i;
803: c->cli_parent = srv;
1.7 misho 804: }
1.4 misho 805:
1.10 misho 806: /* alloc empty buffer */
1.14 misho 807: AIT_SET_BUFSIZ(&c->cli_buf, 0, srv->srv_netbuf);
1.2 misho 808:
1.10 misho 809: /* accept client */
810: c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen);
811: if (c->cli_sock == -1) {
812: LOGERR;
813: AIT_FREE_VAL(&c->cli_buf);
1.14 misho 814: array_Del(srv->srv_blob.clients, i, 42);
1.10 misho 815: goto end;
1.12 misho 816: } else {
817: #ifdef TCP_NOPUSH
818: setsockopt(c->cli_sock, IPPROTO_TCP, TCP_NOPUSH, &n, sizeof n);
819: #endif
1.10 misho 820: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
1.12 misho 821: }
1.2 misho 822:
1.10 misho 823: schedRead(TASK_ROOT(task), rxBLOB, c, c->cli_sock, NULL, 0);
824: end:
825: schedReadSelf(task);
1.7 misho 826: return NULL;
1.1 misho 827: }
828:
1.10 misho 829: /* ------------------------------------------------------ */
1.1 misho 830:
831: /*
1.7 misho 832: * rpc_srv_initBLOBServer() - Init & create BLOB Server
833: *
1.4 misho 834: * @srv = RPC server instance
1.2 misho 835: * @Port = Port for bind server, if Port == 0 default port is selected
836: * @diskDir = Disk place for BLOB file objects
837: * return: -1 == error or 0 bind and created BLOB server instance
838: */
839: int
840: rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, u_short Port, const char *diskDir)
841: {
842: int n = 1;
843:
1.10 misho 844: if (!srv || srv->srv_kill) {
1.7 misho 845: rpc_SetErr(EINVAL, "Invalid parameters can`t init BLOB server");
1.2 misho 846: return -1;
847: }
848:
849: memset(&srv->srv_blob, 0, sizeof srv->srv_blob);
850: if (access(diskDir, R_OK | W_OK) == -1) {
851: LOGERR;
852: return -1;
853: } else
1.7 misho 854: AIT_SET_STR(&srv->srv_blob.dir, diskDir);
1.2 misho 855:
1.10 misho 856: /* init blob list */
857: TAILQ_INIT(&srv->srv_blob.blobs);
858:
1.2 misho 859: srv->srv_blob.server.cli_parent = srv;
1.4 misho 860:
1.14 misho 861: memcpy(&srv->srv_blob.server.cli_sa, &srv->srv_server.cli_sa, sizeof(sockaddr_t));
1.10 misho 862: switch (srv->srv_blob.server.cli_sa.sa.sa_family) {
1.4 misho 863: case AF_INET:
1.10 misho 864: srv->srv_blob.server.cli_sa.sin.sin_port =
865: htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin.sin_port) + 1);
1.4 misho 866: break;
867: case AF_INET6:
1.10 misho 868: srv->srv_blob.server.cli_sa.sin6.sin6_port =
869: htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin6.sin6_port) + 1);
1.4 misho 870: break;
871: case AF_LOCAL:
1.10 misho 872: strlcat(srv->srv_blob.server.cli_sa.sun.sun_path, ".blob",
873: sizeof srv->srv_blob.server.cli_sa.sun.sun_path);
1.4 misho 874: break;
875: default:
1.7 misho 876: AIT_FREE_VAL(&srv->srv_blob.dir);
1.4 misho 877: return -1;
1.2 misho 878: }
879:
1.4 misho 880: /* create BLOB server socket */
1.6 misho 881: srv->srv_blob.server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, SOCK_STREAM, 0);
1.2 misho 882: if (srv->srv_blob.server.cli_sock == -1) {
883: LOGERR;
1.7 misho 884: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 885: return -1;
886: }
887: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
888: LOGERR;
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;
892: }
1.5 misho 893: n = srv->srv_netbuf;
894: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_SNDBUF, &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);
1.5 misho 898: return -1;
899: }
900: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
901: LOGERR;
902: close(srv->srv_blob.server.cli_sock);
1.7 misho 903: AIT_FREE_VAL(&srv->srv_blob.dir);
1.5 misho 904: return -1;
905: }
1.6 misho 906: if (bind(srv->srv_blob.server.cli_sock, &srv->srv_blob.server.cli_sa.sa,
907: srv->srv_blob.server.cli_sa.sa.sa_len) == -1) {
1.2 misho 908: LOGERR;
909: close(srv->srv_blob.server.cli_sock);
1.7 misho 910: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 911: return -1;
1.13 misho 912: } else
913: fcntl(srv->srv_blob.server.cli_sock, F_SETFL,
914: fcntl(srv->srv_blob.server.cli_sock, F_GETFL) | O_NONBLOCK);
915:
1.2 misho 916:
1.10 misho 917: /* allocate pool for concurent blob clients */
1.14 misho 918: srv->srv_blob.clients = array_Init(array_Size(srv->srv_clients));
1.2 misho 919: if (!srv->srv_blob.clients) {
1.14 misho 920: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1.2 misho 921: close(srv->srv_blob.server.cli_sock);
1.7 misho 922: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 923: return -1;
1.10 misho 924: }
1.2 misho 925:
1.10 misho 926: /* init blob scheduler */
927: srv->srv_blob.root = schedBegin();
928: if (!srv->srv_blob.root) {
929: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1.14 misho 930: array_Destroy(&srv->srv_blob.clients);
1.10 misho 931: close(srv->srv_blob.server.cli_sock);
932: AIT_FREE_VAL(&srv->srv_blob.dir);
933: return -1;
934: }
1.2 misho 935:
936: return 0;
937: }
938:
939: /*
1.7 misho 940: * rpc_srv_endBLOBServer() - Destroy BLOB server, close all opened sockets and free resources
941: *
1.2 misho 942: * @srv = RPC Server instance
943: * return: none
944: */
1.16 misho 945: void
1.2 misho 946: rpc_srv_endBLOBServer(rpc_srv_t * __restrict srv)
947: {
1.10 misho 948: if (!srv)
1.2 misho 949: return;
950:
1.10 misho 951: srv->srv_blob.kill = 1;
1.17 misho 952:
953: schedEnd(&srv->srv_blob.root);
1.2 misho 954: }
955:
956: /*
1.10 misho 957: * rpc_srv_loopBLOBServer() - Execute Main BLOB server loop and wait for clients requests
1.7 misho 958: *
1.2 misho 959: * @srv = RPC Server instance
960: * return: -1 error or 0 ok, infinite loop ...
961: */
962: int
1.10 misho 963: rpc_srv_loopBLOBServer(rpc_srv_t * __restrict srv)
1.2 misho 964: {
1.10 misho 965: rpc_cli_t *c;
1.2 misho 966: register int i;
1.10 misho 967: rpc_blob_t *b, *tmp;
968: struct timespec ts = { RPC_SCHED_POLLING, 0 };
1.2 misho 969:
1.10 misho 970: if (!srv || srv->srv_kill) {
1.7 misho 971: rpc_SetErr(EINVAL, "Invalid parameter can`t start BLOB server");
1.2 misho 972: return -1;
973: }
974:
1.14 misho 975: if (listen(srv->srv_blob.server.cli_sock, array_Size(srv->srv_blob.clients)) == -1) {
1.2 misho 976: LOGERR;
977: return -1;
1.10 misho 978: }
979:
1.17 misho 980: schedSignal(srv->srv_blob.root, flushBLOB, srv, SIGFBLOB, NULL, 0);
1.10 misho 981: if (!schedRead(srv->srv_blob.root, acceptBLOBClients, srv,
982: srv->srv_blob.server.cli_sock, NULL, 0)) {
983: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
984: return -1;
985: }
1.2 misho 986:
1.10 misho 987: schedPolling(srv->srv_blob.root, &ts, NULL);
988: /* main rpc loop */
989: schedRun(srv->srv_blob.root, &srv->srv_blob.kill);
1.7 misho 990:
1.17 misho 991: /* detach blobs */
992: TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) {
993: TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node);
994:
995: rpc_srv_blobFree(srv, b);
996: e_free(b);
997: }
998:
1.10 misho 999: /* close all clients connections & server socket */
1.14 misho 1000: for (i = 0; i < array_Size(srv->srv_blob.clients); i++) {
1001: c = array(srv->srv_blob.clients, i, rpc_cli_t*);
1.10 misho 1002: if (c) {
1003: shutdown(c->cli_sock, SHUT_RDWR);
1004: close(c->cli_sock);
1005:
1006: schedCancelby(srv->srv_blob.root, taskMAX, CRITERIA_ARG, c, NULL);
1007: AIT_FREE_VAL(&c->cli_buf);
1.2 misho 1008: }
1.14 misho 1009: array_Del(srv->srv_blob.clients, i, 42);
1.10 misho 1010: }
1.14 misho 1011: array_Destroy(&srv->srv_blob.clients);
1.2 misho 1012:
1.10 misho 1013: close(srv->srv_blob.server.cli_sock);
1.2 misho 1014:
1.10 misho 1015: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 1016: return 0;
1017: }
1018:
1019:
1020: /*
1.7 misho 1021: * rpc_srv_initServer() - Init & create RPC Server
1022: *
1.15 misho 1023: * @InstID = Instance for authentication & recognition
1.1 misho 1024: * @concurentClients = Concurent clients at same time to this server
1.10 misho 1025: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
1.4 misho 1026: * @csHost = Host name or address for bind server, if NULL any address
1.1 misho 1027: * @Port = Port for bind server, if Port == 0 default port is selected
1.13 misho 1028: * @proto = Protocol, if == 0 choose SOCK_STREAM
1.1 misho 1029: * return: NULL == error or !=NULL bind and created RPC server instance
1030: */
1031: rpc_srv_t *
1.15 misho 1032: rpc_srv_initServer(u_char InstID, int concurentClients, int netBuf,
1033: const char *csHost, u_short Port, int proto)
1.1 misho 1034: {
1.10 misho 1035: int n = 1;
1.1 misho 1036: rpc_srv_t *srv = NULL;
1.14 misho 1037: sockaddr_t sa = E_SOCKADDR_INIT;
1.1 misho 1038:
1.15 misho 1039: if (!concurentClients || (proto < 0 || proto > SOCK_DGRAM)) {
1.10 misho 1040: rpc_SetErr(EINVAL, "Invalid parameters can`t init RPC server");
1.1 misho 1041: return NULL;
1042: }
1.14 misho 1043: if (!e_gethostbyname(csHost, Port, &sa))
1.10 misho 1044: return NULL;
1.1 misho 1045: if (!Port)
1046: Port = RPC_DEFPORT;
1.13 misho 1047: if (!proto)
1048: proto = SOCK_STREAM;
1.10 misho 1049: if (netBuf < RPC_MIN_BUFSIZ)
1.5 misho 1050: netBuf = BUFSIZ;
1.7 misho 1051: else
1.14 misho 1052: netBuf = E_ALIGN(netBuf, 2); /* align netBuf length */
1.10 misho 1053:
1054: #ifdef HAVE_SRANDOMDEV
1055: srandomdev();
1056: #else
1057: time_t tim;
1058:
1059: srandom((time(&tim) ^ getpid()));
1060: #endif
1.1 misho 1061:
1.14 misho 1062: srv = e_malloc(sizeof(rpc_srv_t));
1.1 misho 1063: if (!srv) {
1064: LOGERR;
1065: return NULL;
1066: } else
1067: memset(srv, 0, sizeof(rpc_srv_t));
1068:
1.13 misho 1069: srv->srv_proto = proto;
1.5 misho 1070: srv->srv_netbuf = netBuf;
1.1 misho 1071: srv->srv_session.sess_version = RPC_VERSION;
1.15 misho 1072: srv->srv_session.sess_instance = InstID;
1.1 misho 1073:
1074: srv->srv_server.cli_parent = srv;
1.10 misho 1075: memcpy(&srv->srv_server.cli_sa, &sa, sizeof srv->srv_server.cli_sa);
1076:
1.12 misho 1077: /* init functions */
1078: pthread_mutex_init(&srv->srv_funcs.mtx, NULL);
1079: SLIST_INIT(&srv->srv_funcs);
1080: AVL_INIT(&srv->srv_funcs);
1.10 misho 1081:
1082: /* init scheduler */
1083: srv->srv_root = schedBegin();
1084: if (!srv->srv_root) {
1085: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1.12 misho 1086: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1.14 misho 1087: e_free(srv);
1.10 misho 1088: return NULL;
1089: }
1090:
1091: /* init pool for clients */
1.14 misho 1092: srv->srv_clients = array_Init(concurentClients);
1.10 misho 1093: if (!srv->srv_clients) {
1.14 misho 1094: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1.10 misho 1095: schedEnd(&srv->srv_root);
1.12 misho 1096: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1.14 misho 1097: e_free(srv);
1.10 misho 1098: return NULL;
1099: }
1.4 misho 1100:
1101: /* create server socket */
1.13 misho 1102: srv->srv_server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, srv->srv_proto, 0);
1.1 misho 1103: if (srv->srv_server.cli_sock == -1) {
1104: LOGERR;
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);
1.1 misho 1109: return NULL;
1110: }
1111: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
1112: LOGERR;
1.10 misho 1113: goto err;
1.1 misho 1114: }
1.5 misho 1115: n = srv->srv_netbuf;
1116: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
1117: LOGERR;
1.10 misho 1118: goto err;
1.5 misho 1119: }
1120: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
1121: LOGERR;
1.10 misho 1122: goto err;
1.5 misho 1123: }
1.6 misho 1124: if (bind(srv->srv_server.cli_sock, &srv->srv_server.cli_sa.sa,
1125: srv->srv_server.cli_sa.sa.sa_len) == -1) {
1.1 misho 1126: LOGERR;
1.10 misho 1127: goto err;
1.13 misho 1128: } else
1129: fcntl(srv->srv_server.cli_sock, F_SETFL,
1130: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
1.1 misho 1131:
1.10 misho 1132: rpc_register_srvPing(srv);
1.8 misho 1133:
1.1 misho 1134: return srv;
1.10 misho 1135: err: /* error condition */
1136: close(srv->srv_server.cli_sock);
1.14 misho 1137: array_Destroy(&srv->srv_clients);
1.10 misho 1138: schedEnd(&srv->srv_root);
1.12 misho 1139: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1.14 misho 1140: e_free(srv);
1.10 misho 1141: return NULL;
1.1 misho 1142: }
1143:
1144: /*
1.7 misho 1145: * rpc_srv_endServer() - Destroy RPC server, close all opened sockets and free resources
1146: *
1.6 misho 1147: * @psrv = RPC Server instance
1.1 misho 1148: * return: none
1149: */
1.16 misho 1150: void
1.6 misho 1151: rpc_srv_endServer(rpc_srv_t ** __restrict psrv)
1.1 misho 1152: {
1.10 misho 1153: if (!psrv || !*psrv)
1.1 misho 1154: return;
1155:
1.10 misho 1156: /* if send kill to blob server */
1.17 misho 1157: rpc_srv_endBLOBServer(*psrv);
1.1 misho 1158:
1.10 misho 1159: (*psrv)->srv_kill = 1;
1160: sleep(RPC_SCHED_POLLING);
1.2 misho 1161:
1.17 misho 1162: schedEnd(&(*psrv)->srv_root);
1163:
1.12 misho 1164: pthread_mutex_destroy(&(*psrv)->srv_funcs.mtx);
1.14 misho 1165: e_free(*psrv);
1.6 misho 1166: *psrv = NULL;
1.1 misho 1167: }
1168:
1169: /*
1.7 misho 1170: * rpc_srv_loopServer() - Execute Main server loop and wait for clients requests
1171: *
1.1 misho 1172: * @srv = RPC Server instance
1173: * return: -1 error or 0 ok, infinite loop ...
1174: */
1175: int
1.5 misho 1176: rpc_srv_loopServer(rpc_srv_t * __restrict srv)
1.1 misho 1177: {
1.10 misho 1178: rpc_cli_t *c;
1.1 misho 1179: register int i;
1.12 misho 1180: rpc_func_t *f;
1.10 misho 1181: struct timespec ts = { RPC_SCHED_POLLING, 0 };
1.1 misho 1182:
1183: if (!srv) {
1.10 misho 1184: rpc_SetErr(EINVAL, "Invalid parameter can`t start RPC server");
1.1 misho 1185: return -1;
1186: }
1187:
1.13 misho 1188: if (srv->srv_proto == SOCK_STREAM)
1.14 misho 1189: if (listen(srv->srv_server.cli_sock, array_Size(srv->srv_clients)) == -1) {
1.13 misho 1190: LOGERR;
1191: return -1;
1192: }
1.1 misho 1193:
1.13 misho 1194: if (!schedRead(srv->srv_root, cbProto[srv->srv_proto][CB_ACCEPTCLIENT], srv,
1195: srv->srv_server.cli_sock, NULL, 0)) {
1.10 misho 1196: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1197: return -1;
1198: }
1.7 misho 1199:
1.10 misho 1200: schedPolling(srv->srv_root, &ts, NULL);
1.7 misho 1201: /* main rpc loop */
1.10 misho 1202: schedRun(srv->srv_root, &srv->srv_kill);
1203:
1204: /* close all clients connections & server socket */
1.14 misho 1205: for (i = 0; i < array_Size(srv->srv_clients); i++) {
1206: c = array(srv->srv_clients, i, rpc_cli_t*);
1.10 misho 1207: if (c) {
1208: shutdown(c->cli_sock, SHUT_RDWR);
1209: close(c->cli_sock);
1210:
1211: schedCancelby(srv->srv_root, taskMAX, CRITERIA_ARG, c, NULL);
1.14 misho 1212: ait_freeVars(&RPC_RETVARS(c));
1.10 misho 1213: AIT_FREE_VAL(&c->cli_buf);
1.1 misho 1214: }
1.14 misho 1215: array_Del(srv->srv_clients, i, 42);
1.10 misho 1216: }
1.14 misho 1217: array_Destroy(&srv->srv_clients);
1.2 misho 1218:
1.10 misho 1219: close(srv->srv_server.cli_sock);
1.2 misho 1220:
1.10 misho 1221: /* detach exported calls */
1.12 misho 1222: RPC_FUNCS_LOCK(&srv->srv_funcs);
1223: while ((f = SLIST_FIRST(&srv->srv_funcs))) {
1224: SLIST_REMOVE_HEAD(&srv->srv_funcs, func_next);
1.1 misho 1225:
1.10 misho 1226: AIT_FREE_VAL(&f->func_name);
1.14 misho 1227: e_free(f);
1.1 misho 1228: }
1.12 misho 1229: srv->srv_funcs.avlh_root = NULL;
1230: RPC_FUNCS_UNLOCK(&srv->srv_funcs);
1.1 misho 1231:
1232: return 0;
1233: }
1234:
1235:
1236: /*
1237: * rpc_srv_execCall() Execute registered call from RPC server
1.7 misho 1238: *
1.10 misho 1239: * @cli = RPC client
1.1 misho 1240: * @rpc = IN RPC call structure
1.10 misho 1241: * @funcname = Execute RPC function
1.5 misho 1242: * @args = IN RPC calling arguments from RPC client
1.1 misho 1243: * return: -1 error, !=-1 ok
1244: */
1245: int
1.10 misho 1246: rpc_srv_execCall(rpc_cli_t * __restrict cli, struct tagRPCCall * __restrict rpc,
1247: ait_val_t funcname, array_t * __restrict args)
1.1 misho 1248: {
1249: rpc_callback_t func;
1250:
1.10 misho 1251: if (!cli || !rpc || !AIT_ADDR(&funcname)) {
1.7 misho 1252: rpc_SetErr(EINVAL, "Invalid parameter can`t exec function");
1.1 misho 1253: return -1;
1254: }
1255:
1.10 misho 1256: func = AIT_GET_LIKE(&funcname, rpc_callback_t);
1257: return func(cli, rpc, args);
1.1 misho 1258: }
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