Annotation of libaitrpc/src/srv.c, revision 1.24.2.6
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 $
1.24.2.6! misho 6: * $Id: srv.c,v 1.24.2.5 2015/01/18 00:55:05 misho Exp $
1.1 misho 7: *
1.2 misho 8: **************************************************************************
9: The ELWIX and AITNET software is distributed under the following
10: terms:
11:
12: All of the documentation and software included in the ELWIX and AITNET
13: Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>
14:
1.24.2.2 misho 15: Copyright 2004 - 2015
1.2 misho 16: by Michael Pounov <misho@elwix.org>. All rights reserved.
17:
18: Redistribution and use in source and binary forms, with or without
19: modification, are permitted provided that the following conditions
20: are met:
21: 1. Redistributions of source code must retain the above copyright
22: notice, this list of conditions and the following disclaimer.
23: 2. Redistributions in binary form must reproduce the above copyright
24: notice, this list of conditions and the following disclaimer in the
25: documentation and/or other materials provided with the distribution.
26: 3. All advertising materials mentioning features or use of this software
27: must display the following acknowledgement:
28: This product includes software developed by Michael Pounov <misho@elwix.org>
29: ELWIX - Embedded LightWeight unIX and its contributors.
30: 4. Neither the name of AITNET nor the names of its contributors
31: may be used to endorse or promote products derived from this software
32: without specific prior written permission.
33:
34: THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND
35: ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
36: IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
37: ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
38: FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
39: DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
40: OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
41: HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
42: LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
43: OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
44: SUCH DAMAGE.
45: */
1.1 misho 46: #include "global.h"
47:
48:
1.13 misho 49: /* SOCK_STREAM */
50: static void *acceptClients(sched_task_t *);
51: static void *closeClient(sched_task_t *);
52: static void *rxPacket(sched_task_t *);
53: static void *txPacket(sched_task_t *);
54:
55: /* SOCK_DGRAM */
56: static void *freeClient(sched_task_t *);
57: static void *rxUDPPacket(sched_task_t *);
58: static void *txUDPPacket(sched_task_t *);
59:
60: /* SOCK_RAW */
61:
1.24 misho 62: /* SOCK_BPF */
63: static void *rxBPFPacket(sched_task_t *);
64: static void *txBPFPacket(sched_task_t *);
65:
1.24.2.3 misho 66: /* SOCK_EXT */
1.24.2.5 misho 67: static void *rxEXTPacket(sched_task_t *);
68: static void *txEXTPacket(sched_task_t *);
1.24.2.1 misho 69:
70: static sched_task_func_t cbProto[SOCK_MAX_SUPPORT][4] = {
1.13 misho 71: { acceptClients, closeClient, rxPacket, txPacket }, /* SOCK_STREAM */
72: { acceptClients, closeClient, rxPacket, txPacket }, /* SOCK_STREAM */
73: { rxUDPPacket, freeClient, rxUDPPacket, txUDPPacket }, /* SOCK_DGRAM */
1.24 misho 74: { NULL, NULL, NULL, NULL }, /* SOCK_RAW */
1.24.2.1 misho 75: { rxBPFPacket, freeClient, rxBPFPacket, txBPFPacket }, /* SOCK_BPF */
1.24.2.5 misho 76: { rxEXTPacket, freeClient, rxEXTPacket, txEXTPacket } /* SOCK_EXT */
1.13 misho 77: };
78:
1.23 misho 79: /* Global Signal Argument when kqueue support disabled */
80:
81: static volatile uintptr_t _glSigArg = 0;
82:
1.13 misho 83:
1.16 misho 84: void
1.13 misho 85: rpc_freeCli(rpc_cli_t * __restrict c)
1.10 misho 86: {
87: rpc_srv_t *s = c->cli_parent;
88:
1.13 misho 89: schedCancelby(s->srv_root, taskMAX, CRITERIA_ARG, c, NULL);
1.10 misho 90:
91: /* free buffer */
92: AIT_FREE_VAL(&c->cli_buf);
93:
1.14 misho 94: array_Del(s->srv_clients, c->cli_id, 0);
1.10 misho 95: if (c)
1.14 misho 96: e_free(c);
1.13 misho 97: }
98:
99:
100: static inline int
1.14 misho 101: _check4freeslot(rpc_srv_t * __restrict srv, sockaddr_t * __restrict sa)
1.13 misho 102: {
103: rpc_cli_t *c = NULL;
104: register int i;
105:
106: /* check free slots for connect */
1.14 misho 107: for (i = 0; i < array_Size(srv->srv_clients) &&
108: (c = array(srv->srv_clients, i, rpc_cli_t*)); i++)
1.13 misho 109: /* check for duplicates */
1.14 misho 110: if (sa && !e_addrcmp(&c->cli_sa, sa, 42))
1.13 misho 111: break;
1.14 misho 112: if (i >= array_Size(srv->srv_clients))
1.13 misho 113: return -1; /* no more free slots! */
114:
115: return i;
116: }
117:
118: static rpc_cli_t *
1.14 misho 119: _allocClient(rpc_srv_t * __restrict srv, sockaddr_t * __restrict sa)
1.13 misho 120: {
121: rpc_cli_t *c = NULL;
122: int n;
123:
1.24.2.5 misho 124: if (srv->srv_proto != SOCK_EXT)
125: n = _check4freeslot(srv, sa);
126: else
127: n = 0;
1.13 misho 128: if (n == -1)
129: return NULL;
130: else
1.14 misho 131: c = array(srv->srv_clients, n, rpc_cli_t*);
1.13 misho 132:
133: if (!c) {
1.14 misho 134: c = e_malloc(sizeof(rpc_cli_t));
1.13 misho 135: if (!c) {
136: LOGERR;
137: srv->srv_kill = 1;
138: return NULL;
139: } else {
140: memset(c, 0, sizeof(rpc_cli_t));
1.14 misho 141: array_Set(srv->srv_clients, n, c);
1.13 misho 142: c->cli_id = n;
143: c->cli_parent = srv;
144: }
145:
146: /* alloc empty buffer */
1.14 misho 147: AIT_SET_BUFSIZ(&c->cli_buf, 0, srv->srv_netbuf);
1.13 misho 148: }
149:
150: return c;
151: }
152:
153:
154: static void *
155: freeClient(sched_task_t *task)
156: {
157: rpc_freeCli(TASK_ARG(task));
158:
159: return NULL;
160: }
161:
162: static void *
163: closeClient(sched_task_t *task)
164: {
165: int sock = ((rpc_cli_t*) TASK_ARG(task))->cli_sock;
166:
167: rpc_freeCli(TASK_ARG(task));
168:
169: /* close client socket */
170: shutdown(sock, SHUT_RDWR);
171: close(sock);
1.10 misho 172: return NULL;
173: }
1.7 misho 174:
175: static void *
176: txPacket(sched_task_t *task)
177: {
178: rpc_cli_t *c = TASK_ARG(task);
179: rpc_srv_t *s = c->cli_parent;
180: rpc_func_t *f = NULL;
1.18 misho 181: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1.7 misho 182: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
1.18 misho 183: int ret, estlen, wlen = sizeof(struct tagRPCCall);
1.19 misho 184: struct pollfd pfd;
1.21 misho 185: #ifdef TCP_SESSION_TIMEOUT
186: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
187:
188: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
189: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
190: TASK_ARG(task), ts, TASK_ARG(task), 0);
191: #endif
1.7 misho 192:
193: if (rpc->call_argc) {
1.10 misho 194: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
1.7 misho 195: if (!f) {
1.10 misho 196: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
1.18 misho 197:
1.7 misho 198: rpc->call_argc ^= rpc->call_argc;
199: rpc->call_rep.ret = RPC_ERROR(-1);
200: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
201: } else {
1.18 misho 202: /* calc estimated length */
203: estlen = ait_resideVars(RPC_RETVARS(c)) + wlen;
204: if (estlen > AIT_LEN(&c->cli_buf))
205: AIT_RE_BUF(&c->cli_buf, estlen);
206: buf = AIT_GET_BUF(&c->cli_buf);
1.19 misho 207: rpc = (struct tagRPCCall*) buf;
1.18 misho 208:
1.14 misho 209: rpc->call_argc = htons(array_Size(RPC_RETVARS(c)));
1.7 misho 210: /* Go Encapsulate variables */
1.18 misho 211: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
212: RPC_RETVARS(c));
1.10 misho 213: /* Free return values */
1.14 misho 214: ait_freeVars(&c->cli_vars);
1.7 misho 215: if (ret == -1) {
216: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
1.19 misho 217:
1.7 misho 218: rpc->call_argc ^= rpc->call_argc;
219: rpc->call_rep.ret = RPC_ERROR(-1);
220: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
221: } else
222: wlen += ret;
223: }
224: }
225:
1.18 misho 226: rpc->call_len = htonl(wlen);
1.8 misho 227:
1.15 misho 228: #if 0
1.7 misho 229: /* calculate CRC */
230: rpc->call_crc ^= rpc->call_crc;
1.8 misho 231: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
1.15 misho 232: #endif
1.7 misho 233:
234: /* send reply */
1.19 misho 235: pfd.fd = TASK_FD(task);
236: pfd.events = POLLOUT;
237: for (; wlen > 0; wlen -= ret, buf += ret) {
238: if ((ret = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 ||
239: pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
240: if (ret)
241: LOGERR;
242: else
1.22 misho 243: rpc_SetErr(ETIMEDOUT, "Timeout reached! Client not respond");
1.19 misho 244: /* close connection */
245: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
246: TASK_ARG(task), 0, NULL, 0);
247: return NULL;
248: }
249: ret = send(TASK_FD(task), buf, MIN(wlen, s->srv_netbuf), MSG_NOSIGNAL);
250: if (ret == -1) {
251: /* close connection */
252: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
253: TASK_ARG(task), 0, NULL, 0);
254: return NULL;
255: }
1.10 misho 256: }
1.7 misho 257:
258: return NULL;
259: }
260:
261: static void *
262: execCall(sched_task_t *task)
263: {
264: rpc_cli_t *c = TASK_ARG(task);
265: rpc_srv_t *s = c->cli_parent;
266: rpc_func_t *f = NULL;
267: array_t *arr = NULL;
1.18 misho 268: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1.7 misho 269: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
270: int argc = ntohs(rpc->call_argc);
271:
272: /* Go decapsulate variables ... */
1.8 misho 273: if (argc) {
1.14 misho 274: arr = ait_buffer2vars(buf + sizeof(struct tagRPCCall),
1.18 misho 275: AIT_LEN(&c->cli_buf) - sizeof(struct tagRPCCall), argc, 42);
1.7 misho 276: if (!arr) {
1.14 misho 277: rpc_SetErr(ERPCMISMATCH, "#%d - %s", elwix_GetErrno(), elwix_GetError());
1.18 misho 278:
1.7 misho 279: rpc->call_argc ^= rpc->call_argc;
280: rpc->call_rep.ret = RPC_ERROR(-1);
281: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
282: return NULL;
283: }
1.10 misho 284: } else
285: arr = NULL;
1.7 misho 286:
1.10 misho 287: if (!(f = rpc_srv_getCall(s, ntohs(rpc->call_tag)))) {
1.7 misho 288: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
1.18 misho 289:
1.7 misho 290: rpc->call_argc ^= rpc->call_argc;
291: rpc->call_rep.ret = RPC_ERROR(-1);
292: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
293: } else {
1.8 misho 294: /* if client doesn't want reply */
1.10 misho 295: argc = RPC_CHK_NOREPLY(rpc);
296: rpc->call_rep.ret = RPC_ERROR(rpc_srv_execCall(c, rpc, f->func_name, arr));
1.7 misho 297: if (rpc->call_rep.ret == htonl(-1)) {
1.20 misho 298: if (!rpc->call_rep.eno) {
299: LOGERR;
300: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
301: }
1.7 misho 302: rpc->call_argc ^= rpc->call_argc;
303: } else {
304: rpc->call_rep.eno ^= rpc->call_rep.eno;
1.8 misho 305: if (argc) {
306: /* without reply */
1.14 misho 307: ait_freeVars(&c->cli_vars);
1.8 misho 308: rpc->call_argc ^= rpc->call_argc;
1.10 misho 309: } else {
310: /* reply */
1.14 misho 311: rpc->call_argc = htons(array_Size(RPC_RETVARS(c)));
1.10 misho 312: }
1.7 misho 313: }
314: }
315:
1.14 misho 316: array_Destroy(&arr);
1.7 misho 317: return NULL;
318: }
319:
320: static void *
321: rxPacket(sched_task_t *task)
322: {
323: rpc_cli_t *c = TASK_ARG(task);
324: rpc_srv_t *s = c->cli_parent;
1.18 misho 325: int len, rlen, noreply, estlen;
1.15 misho 326: #if 0
327: u_short crc;
328: #endif
1.10 misho 329: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1.18 misho 330: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
1.19 misho 331: struct pollfd pfd;
1.21 misho 332: #ifdef TCP_SESSION_TIMEOUT
333: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
334:
335: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
336: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
337: TASK_ARG(task), ts, TASK_ARG(task), 0);
338: #endif
1.7 misho 339:
1.18 misho 340: memset(buf, 0, sizeof(struct tagRPCCall));
1.19 misho 341: rlen = recv(TASK_FD(task), rpc, sizeof(struct tagRPCCall), MSG_PEEK);
1.18 misho 342: if (rlen < sizeof(struct tagRPCCall)) {
1.10 misho 343: /* close connection */
1.13 misho 344: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
345: TASK_ARG(task), 0, NULL, 0);
1.7 misho 346: return NULL;
1.10 misho 347: } else {
1.18 misho 348: estlen = ntohl(rpc->call_len);
349: if (estlen > AIT_LEN(&c->cli_buf))
350: AIT_RE_BUF(&c->cli_buf, estlen);
351: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
1.19 misho 352: buf = AIT_GET_BUF(&c->cli_buf);
353: len = estlen;
1.18 misho 354: }
355:
1.19 misho 356: /* get next part of packet */
357: memset(buf, 0, len);
358: pfd.fd = TASK_FD(task);
359: pfd.events = POLLIN | POLLPRI;
360: for (; len > 0; len -= rlen, buf += rlen) {
361: if ((rlen = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 ||
362: pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
363: if (rlen)
364: LOGERR;
365: else
1.22 misho 366: rpc_SetErr(ETIMEDOUT, "Timeout reached! Client not respond");
1.19 misho 367: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
368: TASK_ARG(task), 0, NULL, 0);
369: return NULL;
370: }
1.18 misho 371: rlen = recv(TASK_FD(task), buf, len, 0);
372: if (rlen == -1) {
373: /* close connection */
374: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
375: TASK_ARG(task), 0, NULL, 0);
1.8 misho 376: return NULL;
1.10 misho 377: }
1.18 misho 378: }
1.22 misho 379: len = estlen;
1.8 misho 380:
1.15 misho 381: #if 0
1.18 misho 382: /* check integrity of packet */
383: crc = ntohs(rpc->call_crc);
384: rpc->call_crc ^= rpc->call_crc;
385: if (crc != crcFletcher16((u_short*) rpc, len / 2)) {
386: rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet");
387: return NULL;
388: }
1.15 misho 389: #endif
1.7 misho 390:
1.18 misho 391: noreply = RPC_CHK_NOREPLY(rpc);
1.7 misho 392:
1.18 misho 393: /* check RPC packet session info */
394: if (rpc_chkPktSession(&rpc->call_session, &s->srv_session)) {
395: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
1.7 misho 396:
1.18 misho 397: rpc->call_argc ^= rpc->call_argc;
398: rpc->call_rep.ret = RPC_ERROR(-1);
399: rpc->call_rep.eno = RPC_ERROR(errno);
400: } else {
401: /* execute RPC call */
402: schedEvent(TASK_ROOT(task), execCall, TASK_ARG(task), (int) noreply, rpc, len);
403: }
1.7 misho 404:
1.18 misho 405: /* send RPC reply */
406: if (!noreply)
407: schedWrite(TASK_ROOT(task), cbProto[s->srv_proto][CB_TXPACKET],
408: TASK_ARG(task), TASK_FD(task), rpc, len);
1.7 misho 409:
410: /* lets get next packet */
1.18 misho 411: schedReadSelf(task);
1.7 misho 412: return NULL;
413: }
414:
1.1 misho 415: static void *
1.10 misho 416: acceptClients(sched_task_t *task)
1.1 misho 417: {
1.10 misho 418: rpc_srv_t *srv = TASK_ARG(task);
419: rpc_cli_t *c = NULL;
1.14 misho 420: socklen_t salen = sizeof(sockaddr_t);
1.21 misho 421: int sock;
422: #ifdef TCP_SESSION_TIMEOUT
423: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
424: #endif
1.7 misho 425:
1.13 misho 426: c = _allocClient(srv, NULL);
1.21 misho 427: if (!c) {
428: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
429: if ((sock = accept(TASK_FD(task), NULL, NULL)) != -1) {
430: shutdown(sock, SHUT_RDWR);
431: close(sock);
432: }
1.10 misho 433: goto end;
1.21 misho 434: }
1.10 misho 435:
436: /* accept client */
437: c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen);
438: if (c->cli_sock == -1) {
439: LOGERR;
440: AIT_FREE_VAL(&c->cli_buf);
1.14 misho 441: array_Del(srv->srv_clients, c->cli_id, 42);
1.10 misho 442: goto end;
1.1 misho 443: } else
1.10 misho 444: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
1.1 misho 445:
1.21 misho 446: #ifdef TCP_SESSION_TIMEOUT
447: /* armed timer for close stateless connection */
448: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
449: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT], c,
450: ts, c, 0);
451: #endif
1.13 misho 452: schedRead(TASK_ROOT(task), cbProto[srv->srv_proto][CB_RXPACKET], c,
453: c->cli_sock, NULL, 0);
1.10 misho 454: end:
455: schedReadSelf(task);
456: return NULL;
457: }
1.5 misho 458:
1.7 misho 459:
1.10 misho 460: static void *
1.13 misho 461: txUDPPacket(sched_task_t *task)
1.10 misho 462: {
463: rpc_cli_t *c = TASK_ARG(task);
464: rpc_srv_t *s = c->cli_parent;
1.13 misho 465: rpc_func_t *f = NULL;
1.18 misho 466: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1.13 misho 467: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
1.22 misho 468: int ret, estlen, wlen = sizeof(struct tagRPCCall);
1.13 misho 469: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
1.22 misho 470: struct pollfd pfd;
1.13 misho 471:
472: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
473: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
474: TASK_ARG(task), ts, TASK_ARG(task), 0);
475:
476: if (rpc->call_argc) {
477: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
478: if (!f) {
479: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
480: rpc->call_argc ^= rpc->call_argc;
481: rpc->call_rep.ret = RPC_ERROR(-1);
482: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
483: } else {
1.22 misho 484: /* calc estimated length */
485: estlen = ait_resideVars(RPC_RETVARS(c)) + wlen;
486: if (estlen > AIT_LEN(&c->cli_buf))
487: AIT_RE_BUF(&c->cli_buf, estlen);
488: buf = AIT_GET_BUF(&c->cli_buf);
489: rpc = (struct tagRPCCall*) buf;
490:
1.14 misho 491: rpc->call_argc = htons(array_Size(RPC_RETVARS(c)));
1.13 misho 492: /* Go Encapsulate variables */
1.18 misho 493: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
494: RPC_RETVARS(c));
1.13 misho 495: /* Free return values */
1.14 misho 496: ait_freeVars(&c->cli_vars);
1.13 misho 497: if (ret == -1) {
498: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
499: rpc->call_argc ^= rpc->call_argc;
500: rpc->call_rep.ret = RPC_ERROR(-1);
501: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
502: } else
503: wlen += ret;
504: }
505: }
1.7 misho 506:
1.18 misho 507: rpc->call_len = htonl(wlen);
1.7 misho 508:
1.13 misho 509: /* calculate CRC */
510: rpc->call_crc ^= rpc->call_crc;
511: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
512:
513: /* send reply */
1.22 misho 514: pfd.fd = TASK_FD(task);
515: pfd.events = POLLOUT;
516: for (; wlen > 0; wlen -= ret, buf += ret) {
517: if ((ret = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 ||
518: pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
519: if (ret)
520: LOGERR;
521: else
522: rpc_SetErr(ETIMEDOUT, "Timeout reached! Client not respond");
523: /* close connection */
524: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
525: TASK_ARG(task), 0, NULL, 0);
526: return NULL;
527: }
528: ret = sendto(TASK_FD(task), buf, MIN(wlen, s->srv_netbuf), MSG_NOSIGNAL,
529: &c->cli_sa.sa, c->cli_sa.sa.sa_len);
530: if (ret == -1) {
531: /* close connection */
532: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
533: TASK_ARG(task), 0, NULL, 0);
534: return NULL;
535: }
1.13 misho 536: }
537:
538: return NULL;
539: }
540:
541: static void *
542: rxUDPPacket(sched_task_t *task)
543: {
544: rpc_srv_t *srv = TASK_ARG(task);
545: rpc_cli_t *c = NULL;
1.22 misho 546: int len, rlen, noreply, estlen;
547: u_short crc;
548: u_char *buf, b[sizeof(struct tagRPCCall)];
549: struct tagRPCCall *rpc = (struct tagRPCCall*) b;
1.14 misho 550: sockaddr_t sa;
551: socklen_t salen;
1.13 misho 552: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
1.22 misho 553: struct pollfd pfd;
1.13 misho 554:
555: /* receive connect packet */
1.14 misho 556: salen = sa.ss.ss_len = sizeof(sockaddr_t);
1.22 misho 557: rlen = recvfrom(TASK_FD(task), b, sizeof b, MSG_PEEK, &sa.sa, &salen);
558: if (rlen < sizeof(struct tagRPCCall)) {
559: rpc_SetErr(ERPCMISMATCH, "Short RPC packet");
1.13 misho 560: goto end;
1.22 misho 561: }
1.13 misho 562:
563: c = _allocClient(srv, &sa);
1.22 misho 564: if (!c) {
565: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
566: usleep(2000); /* blocked client delay */
1.13 misho 567: goto end;
1.22 misho 568: } else {
569: estlen = ntohl(rpc->call_len);
570: if (estlen > AIT_LEN(&c->cli_buf))
571: AIT_RE_BUF(&c->cli_buf, estlen);
572: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
573: buf = AIT_GET_BUF(&c->cli_buf);
574: len = estlen;
575:
1.13 misho 576: c->cli_sock = TASK_FD(task);
577: memcpy(&c->cli_sa, &sa, sizeof c->cli_sa);
1.22 misho 578:
1.13 misho 579: /* armed timer for close stateless connection */
580: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
581: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
582: c, ts, c, 0);
583: }
584:
1.22 misho 585: /* get next part of packet */
586: memset(buf, 0, len);
587: pfd.fd = TASK_FD(task);
588: pfd.events = POLLIN | POLLPRI;
589: for (; len > 0; len -= rlen, buf += rlen) {
590: if ((rlen = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 ||
591: pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
592: if (rlen)
593: LOGERR;
594: else
595: rpc_SetErr(ETIMEDOUT, "Timeout reached! Client not respond");
596: schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
597: c, 0, NULL, 0);
1.24 misho 598: goto end;
1.13 misho 599: }
1.22 misho 600: salen = sa.ss.ss_len = sizeof(sockaddr_t);
601: rlen = recvfrom(TASK_FD(task), buf, len, 0, &sa.sa, &salen);
602: if (rlen == -1) {
603: /* close connection */
604: schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
605: c, 0, NULL, 0);
1.24 misho 606: goto end;
1.13 misho 607: }
1.22 misho 608: if (e_addrcmp(&c->cli_sa, &sa, 42))
609: rlen ^= rlen; /* skip if arrive from different address */
610: }
611: len = estlen;
1.13 misho 612:
1.22 misho 613: /* check integrity of packet */
614: crc = ntohs(rpc->call_crc);
615: rpc->call_crc ^= rpc->call_crc;
616: if (crc != crcFletcher16((u_short*) rpc, len / 2)) {
617: rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet");
1.24 misho 618: /* close connection */
619: schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
620: c, 0, NULL, 0);
621: goto end;
622: }
623:
624: noreply = RPC_CHK_NOREPLY(rpc);
625:
626: /* check RPC packet session info */
627: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session)) {
628: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
629:
630: rpc->call_argc ^= rpc->call_argc;
631: rpc->call_rep.ret = RPC_ERROR(-1);
632: rpc->call_rep.eno = RPC_ERROR(errno);
633: } else {
634: /* execute RPC call */
635: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
636: }
637:
638: /* send RPC reply */
639: if (!noreply)
640: schedWrite(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
641: c, TASK_FD(task), rpc, len);
642: end:
643: schedReadSelf(task);
644: return NULL;
645: }
646:
647:
648: static void *
649: txBPFPacket(sched_task_t *task)
650: {
651: rpc_cli_t *c = TASK_ARG(task);
652: rpc_srv_t *s = c->cli_parent;
653: rpc_func_t *f = NULL;
654: u_char *buf = AIT_GET_BUF(&c->cli_buf);
655: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
656: int ret, len, wlen = sizeof(struct tagRPCCall);
657: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
658: struct ether_header *eh;
659: ait_val_t b = AIT_VAL_INIT;
660:
661: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
662: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
663: TASK_ARG(task), ts, TASK_ARG(task), 0);
664:
665: if (rpc->call_argc) {
666: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
667: if (!f) {
668: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
669: rpc->call_argc ^= rpc->call_argc;
670: rpc->call_rep.ret = RPC_ERROR(-1);
671: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
672: } else {
673: /* calc estimated length */
674: len = ait_resideVars(RPC_RETVARS(c)) + wlen;
675: if (len > AIT_LEN(&c->cli_buf))
676: AIT_RE_BUF(&c->cli_buf, len);
677: buf = AIT_GET_BUF(&c->cli_buf);
678: rpc = (struct tagRPCCall*) buf;
679:
680: rpc->call_argc = htons(array_Size(RPC_RETVARS(c)));
681: /* Go Encapsulate variables */
682: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
683: RPC_RETVARS(c));
684: /* Free return values */
685: ait_freeVars(&RPC_RETVARS(c));
686: if (ret == -1) {
687: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
688: rpc->call_argc ^= rpc->call_argc;
689: rpc->call_rep.ret = RPC_ERROR(-1);
690: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
691: } else
692: wlen += ret;
693: }
694: }
695:
696: rpc->call_len = htonl(wlen);
697:
698: /* calculate CRC */
699: rpc->call_crc ^= rpc->call_crc;
700: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
701:
702: /* send reply */
703: AIT_SET_BUF(&b, NULL, MIN(wlen, s->srv_netbuf) + ETHER_HDR_LEN);
704: eh = (struct ether_header*) AIT_GET_BUF(&b);
705: memcpy(eh->ether_dhost, LLADDR(&c->cli_sa.sdl), ETHER_ADDR_LEN);
706: eh->ether_type = htons(RPC_DEFPORT);
707: memcpy(eh + 1, buf, MIN(wlen, s->srv_netbuf));
708:
709: ret = write(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b));
710: AIT_FREE_VAL(&b);
711: if (ret == -1) {
712: /* close connection */
713: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
714: TASK_ARG(task), 0, NULL, 0);
1.22 misho 715: return NULL;
716: }
1.13 misho 717:
1.24 misho 718: return NULL;
719: }
720:
721: static void *
722: rxBPFPacket(sched_task_t *task)
723: {
724: rpc_srv_t *srv = TASK_ARG(task);
725: rpc_cli_t *c = NULL;
726: int len, rlen, noreply;
727: u_short crc;
728: struct tagRPCCall *rpc;
729: sockaddr_t sa;
730: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
731: struct bpf_hdr *h;
732: struct ether_header *eh;
733: ait_val_t b = AIT_VAL_INIT;
734:
735: /* receive connect packet */
736: AIT_SET_BUF(&b, NULL, srv->srv_netbuf);
737: rlen = read(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b));
738: h = (struct bpf_hdr*) AIT_GET_BUF(&b);
739: rlen -= h->bh_hdrlen;
740: if (rlen < h->bh_datalen || h->bh_caplen != h->bh_datalen ||
741: rlen < ETHER_HDR_LEN + sizeof(struct tagRPCCall)) {
742: rpc_SetErr(ERPCMISMATCH, "Short RPC packet");
743: goto end;
744: } else {
745: rlen = h->bh_caplen;
746: eh = (struct ether_header*) (AIT_GET_BUF(&b) + h->bh_hdrlen);
747: rlen -= ETHER_HDR_LEN;
748: rpc = (struct tagRPCCall*) (eh + 1);
749: if (eh->ether_type != ntohs(RPC_DEFPORT))
750: goto end;
751: else
752: e_getlinkbymac((const ether_addr_t*) eh->ether_shost, &sa);
753: }
754:
755: c = _allocClient(srv, &sa);
756: if (!c) {
757: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
758: usleep(2000); /* blocked client delay */
759: goto end;
760: } else {
761: len = ntohl(rpc->call_len);
762: if (len > AIT_LEN(&c->cli_buf))
763: AIT_RE_BUF(&c->cli_buf, len);
764: memcpy(AIT_GET_BUF(&c->cli_buf), rpc, AIT_LEN(&c->cli_buf));
765: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
766:
767: c->cli_sock = TASK_FD(task);
768: memcpy(&c->cli_sa, &sa, sizeof c->cli_sa);
769:
770: /* armed timer for close stateless connection */
771: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
772: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
773: c, ts, c, 0);
774: }
775:
776: /* check integrity of packet */
777: crc = ntohs(rpc->call_crc);
778: rpc->call_crc ^= rpc->call_crc;
779: if (crc != crcFletcher16((u_short*) rpc, len / 2)) {
780: rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet");
781: /* close connection */
782: schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
783: c, 0, NULL, 0);
784: goto end;
785: }
786:
1.22 misho 787: noreply = RPC_CHK_NOREPLY(rpc);
1.18 misho 788:
1.22 misho 789: /* check RPC packet session info */
790: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session)) {
791: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
1.13 misho 792:
1.22 misho 793: rpc->call_argc ^= rpc->call_argc;
794: rpc->call_rep.ret = RPC_ERROR(-1);
795: rpc->call_rep.eno = RPC_ERROR(errno);
796: } else {
797: /* execute RPC call */
798: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
799: }
1.13 misho 800:
1.22 misho 801: /* send RPC reply */
802: if (!noreply)
1.24 misho 803: schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
1.22 misho 804: c, TASK_FD(task), rpc, len);
1.13 misho 805: end:
1.24 misho 806: AIT_FREE_VAL(&b);
1.13 misho 807: schedReadSelf(task);
808: return NULL;
809: }
810:
1.24.2.5 misho 811:
812: static void *
813: txEXTPacket(sched_task_t *task)
814: {
815: rpc_cli_t *c = TASK_ARG(task);
816: rpc_srv_t *s = c->cli_parent;
817: rpc_func_t *f = NULL;
818: u_char *buf = AIT_GET_BUF(&c->cli_buf);
819: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
820: int ret, estlen, wlen = sizeof(struct tagRPCCall);
821: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
822: struct pollfd pfd;
823:
824: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
825: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
826: TASK_ARG(task), ts, TASK_ARG(task), 0);
827:
828: if (rpc->call_argc) {
829: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
830: if (!f) {
831: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
832: rpc->call_argc ^= rpc->call_argc;
833: rpc->call_rep.ret = RPC_ERROR(-1);
834: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
835: } else {
836: /* calc estimated length */
837: estlen = ait_resideVars(RPC_RETVARS(c)) + wlen;
838: if (estlen > AIT_LEN(&c->cli_buf))
839: AIT_RE_BUF(&c->cli_buf, estlen);
840: buf = AIT_GET_BUF(&c->cli_buf);
841: rpc = (struct tagRPCCall*) buf;
842:
843: rpc->call_argc = htons(array_Size(RPC_RETVARS(c)));
844: /* Go Encapsulate variables */
845: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
846: RPC_RETVARS(c));
847: /* Free return values */
848: ait_freeVars(&c->cli_vars);
849: if (ret == -1) {
850: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
851: rpc->call_argc ^= rpc->call_argc;
852: rpc->call_rep.ret = RPC_ERROR(-1);
853: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
854: } else
855: wlen += ret;
856: }
857: }
858:
859: rpc->call_len = htonl(wlen);
860:
861: /* send reply */
862: pfd.fd = TASK_FD(task);
863: pfd.events = POLLOUT;
864: for (; wlen > 0; wlen -= ret, buf += ret) {
865: if ((ret = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 ||
866: pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
867: if (ret)
868: LOGERR;
869: else
870: rpc_SetErr(ETIMEDOUT, "Timeout reached! Client not respond");
871: /* close connection */
872: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
873: TASK_ARG(task), 0, NULL, 0);
874: return NULL;
875: }
876: ret = write(TASK_FD(task), buf, MIN(wlen, s->srv_netbuf));
877: if (ret == -1) {
878: /* close connection */
879: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
880: TASK_ARG(task), 0, NULL, 0);
881: return NULL;
882: }
883: }
884:
885: return NULL;
886: }
887:
888: static void *
889: rxEXTPacket(sched_task_t *task)
890: {
891: rpc_srv_t *srv = TASK_ARG(task);
892: rpc_cli_t *c = NULL;
893: int len, rlen, noreply, estlen;
894: u_char *buf, b[sizeof(struct tagRPCCall)];
895: struct tagRPCCall *rpc = (struct tagRPCCall*) b;
896: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
897: struct pollfd pfd;
898:
899: /* receive connect packet */
900: rlen = read(TASK_FD(task), b, sizeof b);
901: if (rlen < sizeof(struct tagRPCCall)) {
902: rpc_SetErr(ERPCMISMATCH, "Short RPC packet");
903: goto end;
904: }
905:
906: c = _allocClient(srv, (sockaddr_t*) -1);
907: if (!c) {
908: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
909: usleep(2000); /* blocked client delay */
910: goto end;
911: } else {
912: estlen = ntohl(rpc->call_len);
913: if (estlen > AIT_LEN(&c->cli_buf))
914: AIT_RE_BUF(&c->cli_buf, estlen);
915: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
916: memcpy(rpc, b, sizeof b);
917: buf = (u_char*) (rpc + 1);
918: len = estlen;
919:
920: c->cli_sock = TASK_FD(task);
921:
922: /* armed timer for close stateless connection */
923: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
924: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
925: c, ts, c, 0);
926: }
927:
928: /* get next part of packet */
929: memset(buf, 0, len);
930: pfd.fd = TASK_FD(task);
931: pfd.events = POLLIN | POLLPRI;
932: for (; len > 0; len -= rlen, buf += rlen) {
933: if ((rlen = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 ||
934: pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
935: if (rlen)
936: LOGERR;
937: else
938: rpc_SetErr(ETIMEDOUT, "Timeout reached! Client not respond");
939: schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
940: c, 0, NULL, 0);
941: goto end;
942: }
943: rlen = read(TASK_FD(task), buf, len);
944: if (rlen == -1) {
945: /* close connection */
946: schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
947: c, 0, NULL, 0);
948: goto end;
949: }
950: }
951: len = estlen;
952:
953: noreply = RPC_CHK_NOREPLY(rpc);
954:
955: /* check RPC packet session info */
956: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session)) {
957: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
958:
959: rpc->call_argc ^= rpc->call_argc;
960: rpc->call_rep.ret = RPC_ERROR(-1);
961: rpc->call_rep.eno = RPC_ERROR(errno);
962: } else {
963: /* execute RPC call */
964: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
965: }
966:
967: /* send RPC reply */
968: if (!noreply)
969: schedWrite(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
970: c, TASK_FD(task), rpc, len);
971: end:
972: schedReadSelf(task);
973: return NULL;
974: }
975:
1.13 misho 976: /* ------------------------------------------------------ */
977:
1.16 misho 978: void
1.13 misho 979: rpc_freeBLOBCli(rpc_cli_t * __restrict c)
980: {
981: rpc_srv_t *s = c->cli_parent;
982:
983: schedCancelby(s->srv_blob.root, taskMAX, CRITERIA_ARG, c, NULL);
1.10 misho 984:
985: /* free buffer */
986: AIT_FREE_VAL(&c->cli_buf);
987:
1.14 misho 988: array_Del(s->srv_blob.clients, c->cli_id, 0);
1.10 misho 989: if (c)
1.14 misho 990: e_free(c);
1.13 misho 991: }
992:
993:
994: static void *
995: closeBLOBClient(sched_task_t *task)
996: {
997: int sock = ((rpc_cli_t*) TASK_ARG(task))->cli_sock;
998:
999: rpc_freeBLOBCli(TASK_ARG(task));
1000:
1001: /* close client socket */
1002: shutdown(sock, SHUT_RDWR);
1003: close(sock);
1.7 misho 1004: return NULL;
1005: }
1006:
1007: static void *
1008: txBLOB(sched_task_t *task)
1009: {
1.10 misho 1010: rpc_cli_t *c = TASK_ARG(task);
1011: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1.7 misho 1012: int wlen = sizeof(struct tagBLOBHdr);
1013:
1014: /* send reply */
1.10 misho 1015: wlen = send(TASK_FD(task), buf, wlen, MSG_NOSIGNAL);
1016: if (wlen == -1 || wlen != sizeof(struct tagBLOBHdr)) {
1017: /* close blob connection */
1018: schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0);
1019: }
1.7 misho 1020:
1021: return NULL;
1022: }
1.4 misho 1023:
1.7 misho 1024: static void *
1025: rxBLOB(sched_task_t *task)
1026: {
1027: rpc_cli_t *c = TASK_ARG(task);
1028: rpc_srv_t *s = c->cli_parent;
1029: rpc_blob_t *b;
1.10 misho 1030: struct tagBLOBHdr blob;
1.7 misho 1031: int rlen;
1032:
1.10 misho 1033: memset(&blob, 0, sizeof blob);
1034: rlen = recv(TASK_FD(task), &blob, sizeof blob, 0);
1035: if (rlen < 1) {
1036: /* close blob connection */
1037: schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0);
1.7 misho 1038: return NULL;
1039: }
1.5 misho 1040:
1.10 misho 1041: /* check BLOB packet */
1042: if (rlen < sizeof(struct tagBLOBHdr)) {
1043: rpc_SetErr(ERPCMISMATCH, "Short BLOB packet");
1.6 misho 1044:
1.10 misho 1045: schedReadSelf(task);
1.7 misho 1046: return NULL;
1047: }
1.1 misho 1048:
1.7 misho 1049: /* check RPC packet session info */
1.15 misho 1050: if (rpc_chkPktSession(&blob.hdr_session, &s->srv_session)) {
1.7 misho 1051: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
1.10 misho 1052: blob.hdr_cmd = error;
1.7 misho 1053: goto end;
1054: }
1055:
1056: /* Go to proceed packet ... */
1.10 misho 1057: switch (blob.hdr_cmd) {
1.7 misho 1058: case get:
1.10 misho 1059: if (!(b = rpc_srv_getBLOB(s, ntohl(blob.hdr_var)))) {
1060: rpc_SetErr(EINVAL, "Var=%x not found", ntohl(blob.hdr_var));
1061: blob.hdr_cmd = no;
1062: blob.hdr_ret = RPC_ERROR(-1);
1.7 misho 1063: break;
1064: } else
1.10 misho 1065: blob.hdr_len = htonl(b->blob_len);
1.5 misho 1066:
1.7 misho 1067: if (rpc_srv_blobMap(s, b) != -1) {
1068: /* deliver BLOB variable to client */
1.10 misho 1069: blob.hdr_ret = htonl(rpc_srv_sendBLOB(c, b));
1.7 misho 1070: rpc_srv_blobUnmap(b);
1071: } else {
1.10 misho 1072: blob.hdr_cmd = error;
1073: blob.hdr_ret = RPC_ERROR(-1);
1.7 misho 1074: }
1075: break;
1076: case set:
1.17 misho 1077: if ((b = rpc_srv_registerBLOB(s, ntohl(blob.hdr_len),
1078: ntohl(blob.hdr_ret)))) {
1.7 misho 1079: /* set new BLOB variable for reply :) */
1.10 misho 1080: blob.hdr_var = htonl(b->blob_var);
1.7 misho 1081:
1082: /* receive BLOB from client */
1.10 misho 1083: blob.hdr_ret = htonl(rpc_srv_recvBLOB(c, b));
1.7 misho 1084: rpc_srv_blobUnmap(b);
1.5 misho 1085: } else {
1.10 misho 1086: blob.hdr_cmd = error;
1087: blob.hdr_ret = RPC_ERROR(-1);
1.7 misho 1088: }
1089: break;
1090: case unset:
1.11 misho 1091: if (rpc_srv_unregisterBLOB(s, ntohl(blob.hdr_var)) == -1) {
1.10 misho 1092: blob.hdr_cmd = error;
1093: blob.hdr_ret = RPC_ERROR(-1);
1.1 misho 1094: }
1095: break;
1.7 misho 1096: default:
1.10 misho 1097: rpc_SetErr(EPROCUNAVAIL, "Unsupported BLOB command %d", blob.hdr_cmd);
1098: blob.hdr_cmd = error;
1099: blob.hdr_ret = RPC_ERROR(-1);
1.7 misho 1100: }
1.1 misho 1101:
1.7 misho 1102: end:
1.10 misho 1103: memcpy(AIT_ADDR(&c->cli_buf), &blob, sizeof blob);
1104: schedWrite(TASK_ROOT(task), txBLOB, TASK_ARG(task), TASK_FD(task), NULL, 0);
1105: schedReadSelf(task);
1.7 misho 1106: return NULL;
1.2 misho 1107: }
1108:
1109: static void *
1.17 misho 1110: flushBLOB(sched_task_t *task)
1111: {
1.23 misho 1112: uintptr_t sigArg = atomic_load_acq_ptr(&_glSigArg);
1113: rpc_srv_t *srv = sigArg ? (void*) sigArg : TASK_ARG(task);
1.17 misho 1114: rpc_blob_t *b, *tmp;
1115:
1116: TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) {
1117: TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node);
1118:
1119: rpc_srv_blobFree(srv, b);
1120: e_free(b);
1121: }
1122:
1.23 misho 1123: if (!schedSignalSelf(task)) {
1124: /* disabled kqueue support in libaitsched */
1125: struct sigaction sa;
1126:
1127: memset(&sa, 0, sizeof sa);
1128: sigemptyset(&sa.sa_mask);
1129: sa.sa_handler = (void (*)(int)) flushBLOB;
1130: sa.sa_flags = SA_RESTART | SA_RESETHAND;
1131: sigaction(SIGFBLOB, &sa, NULL);
1132: }
1133:
1.17 misho 1134: return NULL;
1135: }
1136:
1137: static void *
1.10 misho 1138: acceptBLOBClients(sched_task_t *task)
1.2 misho 1139: {
1.10 misho 1140: rpc_srv_t *srv = TASK_ARG(task);
1141: rpc_cli_t *c = NULL;
1142: register int i;
1.14 misho 1143: socklen_t salen = sizeof(sockaddr_t);
1.21 misho 1144: int sock;
1.12 misho 1145: #ifdef TCP_NOPUSH
1146: int n = 1;
1147: #endif
1.7 misho 1148:
1.10 misho 1149: /* check free slots for connect */
1.14 misho 1150: for (i = 0; i < array_Size(srv->srv_blob.clients) &&
1151: (c = array(srv->srv_blob.clients, i, rpc_cli_t*)); i++);
1.21 misho 1152: if (c) { /* no more free slots! */
1153: EVERBOSE(1, "BLOB client quota exceeded! Connection will be shutdown!\n");
1154: if ((sock = accept(TASK_FD(task), NULL, NULL)) != -1) {
1155: shutdown(sock, SHUT_RDWR);
1156: close(sock);
1157: }
1.10 misho 1158: goto end;
1.21 misho 1159: }
1160:
1.14 misho 1161: c = e_malloc(sizeof(rpc_cli_t));
1.10 misho 1162: if (!c) {
1.7 misho 1163: LOGERR;
1.10 misho 1164: srv->srv_kill = srv->srv_blob.kill = 1;
1.7 misho 1165: return NULL;
1166: } else {
1.10 misho 1167: memset(c, 0, sizeof(rpc_cli_t));
1.14 misho 1168: array_Set(srv->srv_blob.clients, i, c);
1.10 misho 1169: c->cli_id = i;
1170: c->cli_parent = srv;
1.7 misho 1171: }
1.4 misho 1172:
1.10 misho 1173: /* alloc empty buffer */
1.14 misho 1174: AIT_SET_BUFSIZ(&c->cli_buf, 0, srv->srv_netbuf);
1.2 misho 1175:
1.10 misho 1176: /* accept client */
1177: c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen);
1178: if (c->cli_sock == -1) {
1179: LOGERR;
1180: AIT_FREE_VAL(&c->cli_buf);
1.14 misho 1181: array_Del(srv->srv_blob.clients, i, 42);
1.10 misho 1182: goto end;
1.12 misho 1183: } else {
1184: #ifdef TCP_NOPUSH
1185: setsockopt(c->cli_sock, IPPROTO_TCP, TCP_NOPUSH, &n, sizeof n);
1186: #endif
1.10 misho 1187: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
1.12 misho 1188: }
1.2 misho 1189:
1.10 misho 1190: schedRead(TASK_ROOT(task), rxBLOB, c, c->cli_sock, NULL, 0);
1191: end:
1192: schedReadSelf(task);
1.7 misho 1193: return NULL;
1.1 misho 1194: }
1195:
1.10 misho 1196: /* ------------------------------------------------------ */
1.1 misho 1197:
1198: /*
1.7 misho 1199: * rpc_srv_initBLOBServer() - Init & create BLOB Server
1200: *
1.4 misho 1201: * @srv = RPC server instance
1.2 misho 1202: * @Port = Port for bind server, if Port == 0 default port is selected
1203: * @diskDir = Disk place for BLOB file objects
1204: * return: -1 == error or 0 bind and created BLOB server instance
1205: */
1206: int
1207: rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, u_short Port, const char *diskDir)
1208: {
1209: int n = 1;
1210:
1.10 misho 1211: if (!srv || srv->srv_kill) {
1.7 misho 1212: rpc_SetErr(EINVAL, "Invalid parameters can`t init BLOB server");
1.2 misho 1213: return -1;
1214: }
1215:
1216: memset(&srv->srv_blob, 0, sizeof srv->srv_blob);
1217: if (access(diskDir, R_OK | W_OK) == -1) {
1218: LOGERR;
1219: return -1;
1220: } else
1.7 misho 1221: AIT_SET_STR(&srv->srv_blob.dir, diskDir);
1.2 misho 1222:
1.10 misho 1223: /* init blob list */
1224: TAILQ_INIT(&srv->srv_blob.blobs);
1225:
1.2 misho 1226: srv->srv_blob.server.cli_parent = srv;
1.4 misho 1227:
1.14 misho 1228: memcpy(&srv->srv_blob.server.cli_sa, &srv->srv_server.cli_sa, sizeof(sockaddr_t));
1.10 misho 1229: switch (srv->srv_blob.server.cli_sa.sa.sa_family) {
1.4 misho 1230: case AF_INET:
1.10 misho 1231: srv->srv_blob.server.cli_sa.sin.sin_port =
1232: htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin.sin_port) + 1);
1.4 misho 1233: break;
1234: case AF_INET6:
1.10 misho 1235: srv->srv_blob.server.cli_sa.sin6.sin6_port =
1236: htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin6.sin6_port) + 1);
1.4 misho 1237: break;
1238: case AF_LOCAL:
1.10 misho 1239: strlcat(srv->srv_blob.server.cli_sa.sun.sun_path, ".blob",
1240: sizeof srv->srv_blob.server.cli_sa.sun.sun_path);
1.4 misho 1241: break;
1242: default:
1.7 misho 1243: AIT_FREE_VAL(&srv->srv_blob.dir);
1.4 misho 1244: return -1;
1.2 misho 1245: }
1246:
1.4 misho 1247: /* create BLOB server socket */
1.6 misho 1248: srv->srv_blob.server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, SOCK_STREAM, 0);
1.2 misho 1249: if (srv->srv_blob.server.cli_sock == -1) {
1250: LOGERR;
1.7 misho 1251: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 1252: return -1;
1253: }
1254: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
1255: LOGERR;
1256: close(srv->srv_blob.server.cli_sock);
1.7 misho 1257: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 1258: return -1;
1259: }
1.5 misho 1260: n = srv->srv_netbuf;
1261: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
1262: LOGERR;
1263: close(srv->srv_blob.server.cli_sock);
1.7 misho 1264: AIT_FREE_VAL(&srv->srv_blob.dir);
1.5 misho 1265: return -1;
1266: }
1267: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
1268: LOGERR;
1269: close(srv->srv_blob.server.cli_sock);
1.7 misho 1270: AIT_FREE_VAL(&srv->srv_blob.dir);
1.5 misho 1271: return -1;
1272: }
1.6 misho 1273: if (bind(srv->srv_blob.server.cli_sock, &srv->srv_blob.server.cli_sa.sa,
1274: srv->srv_blob.server.cli_sa.sa.sa_len) == -1) {
1.2 misho 1275: LOGERR;
1276: close(srv->srv_blob.server.cli_sock);
1.7 misho 1277: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 1278: return -1;
1.13 misho 1279: } else
1280: fcntl(srv->srv_blob.server.cli_sock, F_SETFL,
1281: fcntl(srv->srv_blob.server.cli_sock, F_GETFL) | O_NONBLOCK);
1282:
1.2 misho 1283:
1.10 misho 1284: /* allocate pool for concurent blob clients */
1.14 misho 1285: srv->srv_blob.clients = array_Init(array_Size(srv->srv_clients));
1.2 misho 1286: if (!srv->srv_blob.clients) {
1.14 misho 1287: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1.2 misho 1288: close(srv->srv_blob.server.cli_sock);
1.7 misho 1289: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 1290: return -1;
1.10 misho 1291: }
1.2 misho 1292:
1.10 misho 1293: /* init blob scheduler */
1294: srv->srv_blob.root = schedBegin();
1295: if (!srv->srv_blob.root) {
1296: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1.14 misho 1297: array_Destroy(&srv->srv_blob.clients);
1.10 misho 1298: close(srv->srv_blob.server.cli_sock);
1299: AIT_FREE_VAL(&srv->srv_blob.dir);
1300: return -1;
1301: }
1.2 misho 1302:
1303: return 0;
1304: }
1305:
1306: /*
1.7 misho 1307: * rpc_srv_endBLOBServer() - Destroy BLOB server, close all opened sockets and free resources
1308: *
1.2 misho 1309: * @srv = RPC Server instance
1310: * return: none
1311: */
1.16 misho 1312: void
1.2 misho 1313: rpc_srv_endBLOBServer(rpc_srv_t * __restrict srv)
1314: {
1.10 misho 1315: if (!srv)
1.2 misho 1316: return;
1317:
1.10 misho 1318: srv->srv_blob.kill = 1;
1.17 misho 1319:
1320: schedEnd(&srv->srv_blob.root);
1.2 misho 1321: }
1322:
1323: /*
1.10 misho 1324: * rpc_srv_loopBLOBServer() - Execute Main BLOB server loop and wait for clients requests
1.7 misho 1325: *
1.2 misho 1326: * @srv = RPC Server instance
1327: * return: -1 error or 0 ok, infinite loop ...
1328: */
1329: int
1.10 misho 1330: rpc_srv_loopBLOBServer(rpc_srv_t * __restrict srv)
1.2 misho 1331: {
1.10 misho 1332: rpc_cli_t *c;
1.2 misho 1333: register int i;
1.10 misho 1334: rpc_blob_t *b, *tmp;
1335: struct timespec ts = { RPC_SCHED_POLLING, 0 };
1.2 misho 1336:
1.10 misho 1337: if (!srv || srv->srv_kill) {
1.7 misho 1338: rpc_SetErr(EINVAL, "Invalid parameter can`t start BLOB server");
1.2 misho 1339: return -1;
1340: }
1341:
1.14 misho 1342: if (listen(srv->srv_blob.server.cli_sock, array_Size(srv->srv_blob.clients)) == -1) {
1.2 misho 1343: LOGERR;
1344: return -1;
1.10 misho 1345: }
1346:
1.23 misho 1347: if (!schedSignal(srv->srv_blob.root, flushBLOB, srv, SIGFBLOB, NULL, 0)) {
1348: /* disabled kqueue support in libaitsched */
1349: struct sigaction sa;
1350:
1351: atomic_store_rel_ptr(&_glSigArg, (uintptr_t) srv);
1352:
1353: memset(&sa, 0, sizeof sa);
1354: sigemptyset(&sa.sa_mask);
1355: sa.sa_handler = (void (*)(int)) flushBLOB;
1356: sa.sa_flags = SA_RESTART | SA_RESETHAND;
1357: sigaction(SIGFBLOB, &sa, NULL);
1358: }
1359:
1.10 misho 1360: if (!schedRead(srv->srv_blob.root, acceptBLOBClients, srv,
1361: srv->srv_blob.server.cli_sock, NULL, 0)) {
1362: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1363: return -1;
1364: }
1.2 misho 1365:
1.10 misho 1366: schedPolling(srv->srv_blob.root, &ts, NULL);
1367: /* main rpc loop */
1368: schedRun(srv->srv_blob.root, &srv->srv_blob.kill);
1.7 misho 1369:
1.17 misho 1370: /* detach blobs */
1371: TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) {
1372: TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node);
1373:
1374: rpc_srv_blobFree(srv, b);
1375: e_free(b);
1376: }
1377:
1.10 misho 1378: /* close all clients connections & server socket */
1.14 misho 1379: for (i = 0; i < array_Size(srv->srv_blob.clients); i++) {
1380: c = array(srv->srv_blob.clients, i, rpc_cli_t*);
1.10 misho 1381: if (c) {
1382: shutdown(c->cli_sock, SHUT_RDWR);
1383: close(c->cli_sock);
1384:
1385: schedCancelby(srv->srv_blob.root, taskMAX, CRITERIA_ARG, c, NULL);
1386: AIT_FREE_VAL(&c->cli_buf);
1.2 misho 1387: }
1.14 misho 1388: array_Del(srv->srv_blob.clients, i, 42);
1.10 misho 1389: }
1.14 misho 1390: array_Destroy(&srv->srv_blob.clients);
1.2 misho 1391:
1.10 misho 1392: close(srv->srv_blob.server.cli_sock);
1.2 misho 1393:
1.10 misho 1394: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 1395: return 0;
1396: }
1397:
1398:
1399: /*
1.7 misho 1400: * rpc_srv_initServer() - Init & create RPC Server
1401: *
1.15 misho 1402: * @InstID = Instance for authentication & recognition
1.1 misho 1403: * @concurentClients = Concurent clients at same time to this server
1.10 misho 1404: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
1.4 misho 1405: * @csHost = Host name or address for bind server, if NULL any address
1.1 misho 1406: * @Port = Port for bind server, if Port == 0 default port is selected
1.13 misho 1407: * @proto = Protocol, if == 0 choose SOCK_STREAM
1.1 misho 1408: * return: NULL == error or !=NULL bind and created RPC server instance
1409: */
1410: rpc_srv_t *
1.15 misho 1411: rpc_srv_initServer(u_char InstID, int concurentClients, int netBuf,
1412: const char *csHost, u_short Port, int proto)
1.1 misho 1413: {
1.10 misho 1414: int n = 1;
1.1 misho 1415: rpc_srv_t *srv = NULL;
1.14 misho 1416: sockaddr_t sa = E_SOCKADDR_INIT;
1.1 misho 1417:
1.24.2.2 misho 1418: if (!concurentClients || (proto < 0 || proto > SOCK_RAW)) {
1.10 misho 1419: rpc_SetErr(EINVAL, "Invalid parameters can`t init RPC server");
1.1 misho 1420: return NULL;
1421: }
1.14 misho 1422: if (!e_gethostbyname(csHost, Port, &sa))
1.10 misho 1423: return NULL;
1.1 misho 1424: if (!Port)
1425: Port = RPC_DEFPORT;
1.13 misho 1426: if (!proto)
1427: proto = SOCK_STREAM;
1.10 misho 1428: if (netBuf < RPC_MIN_BUFSIZ)
1.5 misho 1429: netBuf = BUFSIZ;
1.7 misho 1430: else
1.14 misho 1431: netBuf = E_ALIGN(netBuf, 2); /* align netBuf length */
1.10 misho 1432:
1433: #ifdef HAVE_SRANDOMDEV
1434: srandomdev();
1435: #else
1436: time_t tim;
1437:
1438: srandom((time(&tim) ^ getpid()));
1439: #endif
1.1 misho 1440:
1.14 misho 1441: srv = e_malloc(sizeof(rpc_srv_t));
1.1 misho 1442: if (!srv) {
1443: LOGERR;
1444: return NULL;
1445: } else
1446: memset(srv, 0, sizeof(rpc_srv_t));
1447:
1.13 misho 1448: srv->srv_proto = proto;
1.5 misho 1449: srv->srv_netbuf = netBuf;
1.1 misho 1450: srv->srv_session.sess_version = RPC_VERSION;
1.15 misho 1451: srv->srv_session.sess_instance = InstID;
1.1 misho 1452:
1453: srv->srv_server.cli_parent = srv;
1.10 misho 1454: memcpy(&srv->srv_server.cli_sa, &sa, sizeof srv->srv_server.cli_sa);
1455:
1.12 misho 1456: /* init functions */
1457: pthread_mutex_init(&srv->srv_funcs.mtx, NULL);
1458: SLIST_INIT(&srv->srv_funcs);
1459: AVL_INIT(&srv->srv_funcs);
1.10 misho 1460:
1461: /* init scheduler */
1462: srv->srv_root = schedBegin();
1463: if (!srv->srv_root) {
1464: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1.12 misho 1465: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1.14 misho 1466: e_free(srv);
1.10 misho 1467: return NULL;
1468: }
1469:
1470: /* init pool for clients */
1.14 misho 1471: srv->srv_clients = array_Init(concurentClients);
1.10 misho 1472: if (!srv->srv_clients) {
1.14 misho 1473: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1.10 misho 1474: schedEnd(&srv->srv_root);
1.12 misho 1475: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1.14 misho 1476: e_free(srv);
1.10 misho 1477: return NULL;
1478: }
1.4 misho 1479:
1480: /* create server socket */
1.13 misho 1481: srv->srv_server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, srv->srv_proto, 0);
1.1 misho 1482: if (srv->srv_server.cli_sock == -1) {
1483: LOGERR;
1.14 misho 1484: array_Destroy(&srv->srv_clients);
1.10 misho 1485: schedEnd(&srv->srv_root);
1.12 misho 1486: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1.14 misho 1487: e_free(srv);
1.1 misho 1488: return NULL;
1489: }
1490: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
1491: LOGERR;
1.10 misho 1492: goto err;
1.1 misho 1493: }
1.5 misho 1494: n = srv->srv_netbuf;
1495: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
1496: LOGERR;
1.10 misho 1497: goto err;
1.5 misho 1498: }
1499: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
1500: LOGERR;
1.10 misho 1501: goto err;
1.5 misho 1502: }
1.6 misho 1503: if (bind(srv->srv_server.cli_sock, &srv->srv_server.cli_sa.sa,
1504: srv->srv_server.cli_sa.sa.sa_len) == -1) {
1.1 misho 1505: LOGERR;
1.10 misho 1506: goto err;
1.13 misho 1507: } else
1508: fcntl(srv->srv_server.cli_sock, F_SETFL,
1509: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
1.1 misho 1510:
1.10 misho 1511: rpc_register_srvPing(srv);
1.8 misho 1512:
1.1 misho 1513: return srv;
1.10 misho 1514: err: /* error condition */
1515: close(srv->srv_server.cli_sock);
1.14 misho 1516: array_Destroy(&srv->srv_clients);
1.10 misho 1517: schedEnd(&srv->srv_root);
1.12 misho 1518: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1.14 misho 1519: e_free(srv);
1.10 misho 1520: return NULL;
1.1 misho 1521: }
1522:
1523: /*
1.7 misho 1524: * rpc_srv_endServer() - Destroy RPC server, close all opened sockets and free resources
1525: *
1.6 misho 1526: * @psrv = RPC Server instance
1.1 misho 1527: * return: none
1528: */
1.16 misho 1529: void
1.6 misho 1530: rpc_srv_endServer(rpc_srv_t ** __restrict psrv)
1.1 misho 1531: {
1.10 misho 1532: if (!psrv || !*psrv)
1.1 misho 1533: return;
1534:
1.10 misho 1535: /* if send kill to blob server */
1.17 misho 1536: rpc_srv_endBLOBServer(*psrv);
1.1 misho 1537:
1.10 misho 1538: (*psrv)->srv_kill = 1;
1539: sleep(RPC_SCHED_POLLING);
1.2 misho 1540:
1.17 misho 1541: schedEnd(&(*psrv)->srv_root);
1542:
1.12 misho 1543: pthread_mutex_destroy(&(*psrv)->srv_funcs.mtx);
1.14 misho 1544: e_free(*psrv);
1.6 misho 1545: *psrv = NULL;
1.1 misho 1546: }
1547:
1548: /*
1.7 misho 1549: * rpc_srv_loopServer() - Execute Main server loop and wait for clients requests
1550: *
1.1 misho 1551: * @srv = RPC Server instance
1552: * return: -1 error or 0 ok, infinite loop ...
1553: */
1554: int
1.5 misho 1555: rpc_srv_loopServer(rpc_srv_t * __restrict srv)
1.1 misho 1556: {
1.10 misho 1557: rpc_cli_t *c;
1.1 misho 1558: register int i;
1.12 misho 1559: rpc_func_t *f;
1.10 misho 1560: struct timespec ts = { RPC_SCHED_POLLING, 0 };
1.1 misho 1561:
1562: if (!srv) {
1.10 misho 1563: rpc_SetErr(EINVAL, "Invalid parameter can`t start RPC server");
1.1 misho 1564: return -1;
1565: }
1566:
1.13 misho 1567: if (srv->srv_proto == SOCK_STREAM)
1.14 misho 1568: if (listen(srv->srv_server.cli_sock, array_Size(srv->srv_clients)) == -1) {
1.13 misho 1569: LOGERR;
1570: return -1;
1571: }
1.1 misho 1572:
1.13 misho 1573: if (!schedRead(srv->srv_root, cbProto[srv->srv_proto][CB_ACCEPTCLIENT], srv,
1574: srv->srv_server.cli_sock, NULL, 0)) {
1.10 misho 1575: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1576: return -1;
1577: }
1.7 misho 1578:
1.10 misho 1579: schedPolling(srv->srv_root, &ts, NULL);
1.7 misho 1580: /* main rpc loop */
1.10 misho 1581: schedRun(srv->srv_root, &srv->srv_kill);
1582:
1583: /* close all clients connections & server socket */
1.14 misho 1584: for (i = 0; i < array_Size(srv->srv_clients); i++) {
1585: c = array(srv->srv_clients, i, rpc_cli_t*);
1.10 misho 1586: if (c) {
1.24 misho 1587: if (srv->srv_proto == SOCK_STREAM) {
1588: shutdown(c->cli_sock, SHUT_RDWR);
1589: close(c->cli_sock);
1590: }
1.10 misho 1591:
1592: schedCancelby(srv->srv_root, taskMAX, CRITERIA_ARG, c, NULL);
1.14 misho 1593: ait_freeVars(&RPC_RETVARS(c));
1.10 misho 1594: AIT_FREE_VAL(&c->cli_buf);
1.1 misho 1595: }
1.14 misho 1596: array_Del(srv->srv_clients, i, 42);
1.10 misho 1597: }
1.14 misho 1598: array_Destroy(&srv->srv_clients);
1.2 misho 1599:
1.24.2.4 misho 1600: if (srv->srv_proto != SOCK_EXT)
1601: close(srv->srv_server.cli_sock);
1.2 misho 1602:
1.10 misho 1603: /* detach exported calls */
1.12 misho 1604: RPC_FUNCS_LOCK(&srv->srv_funcs);
1605: while ((f = SLIST_FIRST(&srv->srv_funcs))) {
1606: SLIST_REMOVE_HEAD(&srv->srv_funcs, func_next);
1.1 misho 1607:
1.10 misho 1608: AIT_FREE_VAL(&f->func_name);
1.14 misho 1609: e_free(f);
1.1 misho 1610: }
1.12 misho 1611: srv->srv_funcs.avlh_root = NULL;
1612: RPC_FUNCS_UNLOCK(&srv->srv_funcs);
1.1 misho 1613:
1614: return 0;
1615: }
1616:
1617:
1618: /*
1619: * rpc_srv_execCall() Execute registered call from RPC server
1.7 misho 1620: *
1.10 misho 1621: * @cli = RPC client
1.1 misho 1622: * @rpc = IN RPC call structure
1.10 misho 1623: * @funcname = Execute RPC function
1.5 misho 1624: * @args = IN RPC calling arguments from RPC client
1.1 misho 1625: * return: -1 error, !=-1 ok
1626: */
1627: int
1.10 misho 1628: rpc_srv_execCall(rpc_cli_t * __restrict cli, struct tagRPCCall * __restrict rpc,
1629: ait_val_t funcname, array_t * __restrict args)
1.1 misho 1630: {
1631: rpc_callback_t func;
1632:
1.10 misho 1633: if (!cli || !rpc || !AIT_ADDR(&funcname)) {
1.7 misho 1634: rpc_SetErr(EINVAL, "Invalid parameter can`t exec function");
1.1 misho 1635: return -1;
1636: }
1637:
1.10 misho 1638: func = AIT_GET_LIKE(&funcname, rpc_callback_t);
1639: return func(cli, rpc, args);
1.1 misho 1640: }
1.24 misho 1641:
1642:
1643: /*
1644: * rpc_srv_initServer2() - Init & create layer2 RPC Server
1645: *
1646: * @InstID = Instance for authentication & recognition
1647: * @concurentClients = Concurent clients at same time to this server
1648: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
1649: * @csIface = Interface name for bind server, if NULL first interface on host
1650: * return: NULL == error or !=NULL bind and created RPC server instance
1651: */
1652: rpc_srv_t *
1653: rpc_srv_initServer2(u_char InstID, int concurentClients, int netBuf, const char *csIface)
1654: {
1655: int n = 1;
1656: rpc_srv_t *srv = NULL;
1657: sockaddr_t sa = E_SOCKADDR_INIT;
1658: char szIface[64], szStr[STRSIZ];
1659: register int i;
1660: struct ifreq ifr;
1661: struct bpf_insn insns[] = {
1662: BPF_STMT(BPF_LD + BPF_H + BPF_ABS, 12),
1663: BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, RPC_DEFPORT, 0, 1),
1664: BPF_STMT(BPF_RET + BPF_K, -1),
1665: BPF_STMT(BPF_RET + BPF_K, 0),
1666: };
1667: struct bpf_program fcode = {
1668: .bf_len = sizeof(insns) / sizeof(struct bpf_insn),
1669: .bf_insns = insns
1670: };
1671:
1672: if (!concurentClients) {
1673: rpc_SetErr(EINVAL, "Invalid parameters can`t init RPC server");
1674: return NULL;
1675: }
1676: if (!csIface) {
1677: if (e_get1stiface(szIface, sizeof szIface))
1678: return NULL;
1679: } else
1680: strlcpy(szIface, csIface, sizeof szIface);
1681: if (!e_getifacebyname(szIface, &sa))
1682: return NULL;
1683:
1684: #ifdef HAVE_SRANDOMDEV
1685: srandomdev();
1686: #else
1687: time_t tim;
1688:
1689: srandom((time(&tim) ^ getpid()));
1690: #endif
1691:
1692: srv = e_malloc(sizeof(rpc_srv_t));
1693: if (!srv) {
1694: LOGERR;
1695: return NULL;
1696: } else
1697: memset(srv, 0, sizeof(rpc_srv_t));
1698:
1699: srv->srv_proto = SOCK_BPF;
1700: srv->srv_netbuf = netBuf;
1701: srv->srv_session.sess_version = RPC_VERSION;
1702: srv->srv_session.sess_instance = InstID;
1703:
1704: srv->srv_server.cli_parent = srv;
1705: memcpy(&srv->srv_server.cli_sa, &sa, sizeof srv->srv_server.cli_sa);
1706:
1707: /* init functions */
1708: pthread_mutex_init(&srv->srv_funcs.mtx, NULL);
1709: SLIST_INIT(&srv->srv_funcs);
1710: AVL_INIT(&srv->srv_funcs);
1711:
1712: /* init scheduler */
1713: srv->srv_root = schedBegin();
1714: if (!srv->srv_root) {
1715: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1716: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1717: e_free(srv);
1718: return NULL;
1719: }
1720:
1721: /* init pool for clients */
1722: srv->srv_clients = array_Init(concurentClients);
1723: if (!srv->srv_clients) {
1724: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1725: schedEnd(&srv->srv_root);
1726: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1727: e_free(srv);
1728: return NULL;
1729: }
1730:
1731: /* create server handler */
1732: for (i = 0; i < 10; i++) {
1733: memset(szStr, 0, sizeof szStr);
1734: snprintf(szStr, sizeof szStr, "/dev/bpf%d", i);
1735: srv->srv_server.cli_sock = open(szStr, O_RDWR);
1736: if (srv->srv_server.cli_sock > STDERR_FILENO)
1737: break;
1738: }
1739: if (srv->srv_server.cli_sock < 3) {
1740: LOGERR;
1741: array_Destroy(&srv->srv_clients);
1742: schedEnd(&srv->srv_root);
1743: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1744: e_free(srv);
1745: return NULL;
1746: }
1747:
1748: if (ioctl(srv->srv_server.cli_sock, BIOCIMMEDIATE, &n) == -1) {
1749: LOGERR;
1750: goto err;
1751: }
1752: if (ioctl(srv->srv_server.cli_sock, BIOCSETF, &fcode) == -1) {
1753: LOGERR;
1754: goto err;
1755: }
1756: n = (netBuf < RPC_MIN_BUFSIZ) ? getpagesize() : E_ALIGN(netBuf, 2);
1757: if (ioctl(srv->srv_server.cli_sock, BIOCSBLEN, &n) == -1) {
1758: LOGERR;
1759: goto err;
1760: } else
1761: srv->srv_netbuf = n;
1762:
1763: memset(&ifr, 0, sizeof ifr);
1764: strlcpy(ifr.ifr_name, szIface, sizeof ifr.ifr_name);
1765: if (ioctl(srv->srv_server.cli_sock, BIOCSETIF, &ifr) == -1) {
1766: LOGERR;
1767: goto err;
1768: } else
1769: fcntl(srv->srv_server.cli_sock, F_SETFL,
1770: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
1771:
1772: rpc_register_srvPing(srv);
1773:
1774: return srv;
1775: err: /* error condition */
1776: close(srv->srv_server.cli_sock);
1777: array_Destroy(&srv->srv_clients);
1778: schedEnd(&srv->srv_root);
1779: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1780: e_free(srv);
1781: return NULL;
1782: }
1.24.2.3 misho 1783:
1784: /*
1785: * rpc_srv_initServerExt() - Init & create pipe RPC Server
1786: *
1787: * @InstID = Instance for authentication & recognition
1788: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
1789: * @fd = File descriptor
1790: * return: NULL == error or !=NULL bind and created RPC server instance
1791: */
1792: rpc_srv_t *
1793: rpc_srv_initServerExt(u_char InstID, int netBuf, int fd)
1794: {
1795: rpc_srv_t *srv = NULL;
1796:
1797: #ifdef HAVE_SRANDOMDEV
1798: srandomdev();
1799: #else
1800: time_t tim;
1801:
1802: srandom((time(&tim) ^ getpid()));
1803: #endif
1804:
1805: srv = e_malloc(sizeof(rpc_srv_t));
1806: if (!srv) {
1807: LOGERR;
1808: return NULL;
1809: } else
1810: memset(srv, 0, sizeof(rpc_srv_t));
1811:
1812: srv->srv_proto = SOCK_EXT;
1.24.2.6! misho 1813: srv->srv_netbuf = (netBuf < RPC_MIN_BUFSIZ) ?
! 1814: getpagesize() : E_ALIGN(netBuf, 2);
1.24.2.3 misho 1815: srv->srv_session.sess_version = RPC_VERSION;
1816: srv->srv_session.sess_instance = InstID;
1817:
1818: srv->srv_server.cli_parent = srv;
1819: srv->srv_server.cli_sock = fd;
1820:
1821: /* init functions */
1822: pthread_mutex_init(&srv->srv_funcs.mtx, NULL);
1823: SLIST_INIT(&srv->srv_funcs);
1824: AVL_INIT(&srv->srv_funcs);
1825:
1826: /* init scheduler */
1827: srv->srv_root = schedBegin();
1828: if (!srv->srv_root) {
1829: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1830: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1831: e_free(srv);
1832: return NULL;
1833: }
1834:
1835: /* init pool for clients */
1836: srv->srv_clients = array_Init(1);
1837: if (!srv->srv_clients) {
1838: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1839: schedEnd(&srv->srv_root);
1840: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1841: e_free(srv);
1842: return NULL;
1843: }
1844:
1845: fcntl(srv->srv_server.cli_sock, F_SETFL,
1846: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
1847:
1848: rpc_register_srvPing(srv);
1849:
1850: return srv;
1851: }
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