Annotation of libaitrpc/src/srv.c, revision 1.30.2.7
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 $
1.30.2.7! misho 6: * $Id: srv.c,v 1.30.2.6 2024/02/26 13:30:59 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:
1.30.2.4 misho 15: Copyright 2004 - 2024
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 */
1.26 misho 61: static void *rxRAWPacket(sched_task_t *);
62: static void *txRAWPacket(sched_task_t *);
1.13 misho 63:
1.24 misho 64: /* SOCK_BPF */
65: static void *rxBPFPacket(sched_task_t *);
66: static void *txBPFPacket(sched_task_t *);
67:
1.25 misho 68: /* SOCK_EXT */
69: static void *rxEXTPacket(sched_task_t *);
70: static void *txEXTPacket(sched_task_t *);
71:
72: static sched_task_func_t cbProto[SOCK_MAX_SUPPORT][4] = {
1.27 misho 73: { acceptClients, closeClient, rxPacket, txPacket }, /* SOCK_STREAM */
74: { acceptClients, closeClient, rxPacket, txPacket }, /* SOCK_STREAM */
75: { rxUDPPacket, freeClient, NULL /*rxUDPPacket*/, txUDPPacket }, /* SOCK_DGRAM */
76: { rxRAWPacket, freeClient, NULL /*rxRAWPacket*/, txRAWPacket }, /* SOCK_RAW */
77: { rxBPFPacket, freeClient, NULL /*rxBPFPacket*/, txBPFPacket }, /* SOCK_BPF */
78: { rxEXTPacket, freeClient, NULL /*rxEXTPacket*/, txEXTPacket } /* SOCK_EXT */
1.13 misho 79: };
80:
1.23 misho 81: /* Global Signal Argument when kqueue support disabled */
82:
83: static volatile uintptr_t _glSigArg = 0;
84:
1.16 misho 85: void
1.13 misho 86: rpc_freeCli(rpc_cli_t * __restrict c)
1.10 misho 87: {
88: rpc_srv_t *s = c->cli_parent;
89:
1.13 misho 90: schedCancelby(s->srv_root, taskMAX, CRITERIA_ARG, c, NULL);
1.10 misho 91:
92: /* free buffer */
93: AIT_FREE_VAL(&c->cli_buf);
94:
1.14 misho 95: array_Del(s->srv_clients, c->cli_id, 0);
1.10 misho 96: if (c)
1.14 misho 97: e_free(c);
1.13 misho 98: }
99:
100:
101: static inline int
1.14 misho 102: _check4freeslot(rpc_srv_t * __restrict srv, sockaddr_t * __restrict sa)
1.13 misho 103: {
104: rpc_cli_t *c = NULL;
105: register int i;
106:
107: /* check free slots for connect */
1.14 misho 108: for (i = 0; i < array_Size(srv->srv_clients) &&
109: (c = array(srv->srv_clients, i, rpc_cli_t*)); i++)
1.13 misho 110: /* check for duplicates */
1.14 misho 111: if (sa && !e_addrcmp(&c->cli_sa, sa, 42))
1.13 misho 112: break;
1.14 misho 113: if (i >= array_Size(srv->srv_clients))
1.13 misho 114: return -1; /* no more free slots! */
115:
116: return i;
117: }
118:
119: static rpc_cli_t *
1.14 misho 120: _allocClient(rpc_srv_t * __restrict srv, sockaddr_t * __restrict sa)
1.13 misho 121: {
122: rpc_cli_t *c = NULL;
123: int n;
124:
1.25 misho 125: if (srv->srv_proto != SOCK_EXT)
126: n = _check4freeslot(srv, sa);
127: else
128: n = 0;
1.13 misho 129: if (n == -1)
130: return NULL;
131: else
1.14 misho 132: c = array(srv->srv_clients, n, rpc_cli_t*);
1.13 misho 133:
134: if (!c) {
1.14 misho 135: c = e_malloc(sizeof(rpc_cli_t));
1.13 misho 136: if (!c) {
137: LOGERR;
138: srv->srv_kill = 1;
139: return NULL;
140: } else {
141: memset(c, 0, sizeof(rpc_cli_t));
1.14 misho 142: array_Set(srv->srv_clients, n, c);
1.13 misho 143: c->cli_id = n;
144: c->cli_parent = srv;
145: }
146:
147: /* alloc empty buffer */
1.14 misho 148: AIT_SET_BUFSIZ(&c->cli_buf, 0, srv->srv_netbuf);
1.13 misho 149: }
150:
151: return c;
152: }
153:
154:
155: static void *
156: freeClient(sched_task_t *task)
157: {
158: rpc_freeCli(TASK_ARG(task));
159:
1.27 misho 160: taskExit(task, NULL);
1.13 misho 161: }
162:
163: static void *
164: closeClient(sched_task_t *task)
165: {
166: int sock = ((rpc_cli_t*) TASK_ARG(task))->cli_sock;
167:
168: rpc_freeCli(TASK_ARG(task));
169:
170: /* close client socket */
171: shutdown(sock, SHUT_RDWR);
172: close(sock);
1.27 misho 173: taskExit(task, NULL);
1.10 misho 174: }
1.7 misho 175:
176: static void *
177: txPacket(sched_task_t *task)
178: {
179: rpc_cli_t *c = TASK_ARG(task);
180: rpc_srv_t *s = c->cli_parent;
181: rpc_func_t *f = NULL;
1.18 misho 182: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1.7 misho 183: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
1.27 misho 184: int ret, wlen = sizeof(struct tagRPCCall);
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;
1.27 misho 199: RPC_SET_RETURN(rpc, -1);
200: RPC_SET_ERRNO(rpc, rpc_Errno);
201: } else if (rpc_pktFreeSpace(c) > s->srv_netbuf) {
202: rpc_SetErr(EMSGSIZE, "Message too long");
203:
204: rpc->call_argc ^= rpc->call_argc;
205: RPC_SET_RETURN(rpc, -1);
206: RPC_SET_ERRNO(rpc, rpc_Errno);
1.7 misho 207: } else {
1.25 misho 208: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
1.7 misho 209: /* Go Encapsulate variables */
1.18 misho 210: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
211: RPC_RETVARS(c));
1.7 misho 212: if (ret == -1) {
213: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
1.19 misho 214:
1.7 misho 215: rpc->call_argc ^= rpc->call_argc;
1.27 misho 216: RPC_SET_RETURN(rpc, -1);
217: RPC_SET_ERRNO(rpc, rpc_Errno);
1.7 misho 218: } else
219: wlen += ret;
220: }
221: }
222:
1.27 misho 223: /* Free return values */
224: ait_freeVars(&c->cli_vars);
225:
1.18 misho 226: rpc->call_len = htonl(wlen);
1.25 misho 227: rpc->call_io = RPC_ACK;
1.8 misho 228:
1.15 misho 229: #if 0
1.7 misho 230: /* calculate CRC */
231: rpc->call_crc ^= rpc->call_crc;
1.8 misho 232: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
1.15 misho 233: #endif
1.7 misho 234:
235: /* send reply */
1.27 misho 236: ret = send(TASK_FD(task), buf, wlen, MSG_NOSIGNAL);
237: if (ret == -1) {
238: /* close connection */
239: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
240: TASK_ARG(task), 0, NULL, 0);
1.10 misho 241: }
1.7 misho 242:
1.27 misho 243: taskExit(task, NULL);
1.7 misho 244: }
245:
246: static void *
247: execCall(sched_task_t *task)
248: {
249: rpc_cli_t *c = TASK_ARG(task);
250: rpc_srv_t *s = c->cli_parent;
251: rpc_func_t *f = NULL;
252: array_t *arr = NULL;
1.18 misho 253: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1.7 misho 254: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
1.25 misho 255: int argc = rpc->call_argc;
1.7 misho 256:
257: /* Go decapsulate variables ... */
1.8 misho 258: if (argc) {
1.14 misho 259: arr = ait_buffer2vars(buf + sizeof(struct tagRPCCall),
1.18 misho 260: AIT_LEN(&c->cli_buf) - sizeof(struct tagRPCCall), argc, 42);
1.7 misho 261: if (!arr) {
1.14 misho 262: rpc_SetErr(ERPCMISMATCH, "#%d - %s", elwix_GetErrno(), elwix_GetError());
1.18 misho 263:
1.7 misho 264: rpc->call_argc ^= rpc->call_argc;
1.27 misho 265: RPC_SET_RETURN(rpc, -1);
266: RPC_SET_ERRNO(rpc, rpc_Errno);
267: taskExit(task, NULL);
1.7 misho 268: }
1.10 misho 269: } else
270: arr = NULL;
1.7 misho 271:
1.10 misho 272: if (!(f = rpc_srv_getCall(s, ntohs(rpc->call_tag)))) {
1.7 misho 273: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
1.18 misho 274:
1.7 misho 275: rpc->call_argc ^= rpc->call_argc;
1.27 misho 276: RPC_SET_RETURN(rpc, -1);
277: RPC_SET_ERRNO(rpc, rpc_Errno);
1.7 misho 278: } else {
1.8 misho 279: /* if client doesn't want reply */
1.27 misho 280: RPC_SET_RETURN(rpc, rpc_srv_execCall(c, rpc, f->func_name, arr));
1.7 misho 281: if (rpc->call_rep.ret == htonl(-1)) {
1.20 misho 282: if (!rpc->call_rep.eno) {
283: LOGERR;
1.27 misho 284: RPC_SET_ERRNO(rpc, rpc_Errno);
1.20 misho 285: }
1.7 misho 286: rpc->call_argc ^= rpc->call_argc;
1.27 misho 287: ait_freeVars(&c->cli_vars);
1.7 misho 288: } else {
289: rpc->call_rep.eno ^= rpc->call_rep.eno;
1.27 misho 290: rpc->call_argc ^= rpc->call_argc;
291: if (TASK_VAL(task)) {
1.8 misho 292: /* without reply */
1.14 misho 293: ait_freeVars(&c->cli_vars);
1.30.2.6 misho 294: } else if (rpc->call_io & RPC_REQ) {
1.10 misho 295: /* reply */
1.25 misho 296: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
1.10 misho 297: }
1.7 misho 298: }
299: }
300:
1.14 misho 301: array_Destroy(&arr);
1.27 misho 302: taskExit(task, NULL);
1.7 misho 303: }
304:
1.30.2.7! misho 305: int
! 306: rpc_srv_Return(sched_root_task_t *root, rpc_cli_t *c)
! 307: {
! 308: rpc_srv_t *s = c->cli_parent;
! 309: u_char *buf = AIT_GET_BUF(&c->cli_buf);
! 310: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
! 311:
! 312: if (!RPC_CHK_NOREPLY(rpc)) {
! 313: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
! 314: schedWrite(root, cbProto[s->srv_proto][CB_TXPACKET], c, c->cli_sock, NULL, 0);
! 315: }
! 316:
! 317: return rpc->call_argc;
! 318: }
! 319:
1.7 misho 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;
1.27 misho 325: int len, noreply = 0, rlen = AIT_LEN(&c->cli_buf);
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);
1.29 misho 330: struct tagRPCCall b, *rpc = (struct tagRPCCall*) buf;
1.21 misho 331: #ifdef TCP_SESSION_TIMEOUT
332: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
333:
334: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
335: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
336: TASK_ARG(task), ts, TASK_ARG(task), 0);
337: #endif
1.7 misho 338:
1.27 misho 339: /* prepare rx */
1.29 misho 340: len = recv(TASK_FD(task), &b, sizeof b, MSG_PEEK);
1.30.2.7! misho 341: if (len < 1) {
! 342: /* close connection */
! 343: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
! 344: TASK_ARG(task), 0, NULL, 0);
! 345: taskExit(task, NULL);
! 346: } else if (len == sizeof b)
1.29 misho 347: rlen = ntohl(b.call_len);
1.30.2.7! misho 348: else
! 349: goto end;
1.27 misho 350:
351: rlen = recv(TASK_FD(task), buf, rlen, 0);
352: if (rlen == -1) {
1.10 misho 353: /* close connection */
1.13 misho 354: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
355: TASK_ARG(task), 0, NULL, 0);
1.27 misho 356: taskExit(task, NULL);
1.18 misho 357: }
1.27 misho 358: if (rlen < sizeof(struct tagRPCCall)) {
359: rpc_SetErr(ERPCMISMATCH, "Short RPC packet");
1.18 misho 360:
1.27 misho 361: rpc->call_argc ^= rpc->call_argc;
362: RPC_SET_RETURN(rpc, -1);
363: RPC_SET_ERRNO(rpc, rpc_Errno);
364: goto err;
365: } else
366: len = ntohl(rpc->call_len);
367: if (rlen < len || len > AIT_LEN(&c->cli_buf)) {
368: rpc_SetErr(ERPCMISMATCH, "Short RPC packet");
369:
370: rpc->call_argc ^= rpc->call_argc;
371: RPC_SET_RETURN(rpc, -1);
372: RPC_SET_ERRNO(rpc, rpc_Errno);
373: goto err;
1.18 misho 374: }
1.8 misho 375:
1.25 misho 376: /* skip loop packet */
377: if (rpc->call_io & RPC_ACK) {
378: schedReadSelf(task);
1.27 misho 379: taskExit(task, NULL);
1.25 misho 380: }
381:
1.15 misho 382: #if 0
1.18 misho 383: /* check integrity of packet */
384: crc = ntohs(rpc->call_crc);
385: rpc->call_crc ^= rpc->call_crc;
386: if (crc != crcFletcher16((u_short*) rpc, len / 2)) {
387: rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet");
1.27 misho 388:
389: rpc->call_argc ^= rpc->call_argc;
390: RPC_SET_RETURN(rpc, -1);
391: RPC_SET_ERRNO(rpc, rpc_Errno);
392: goto err;
1.18 misho 393: }
1.15 misho 394: #endif
1.7 misho 395:
1.18 misho 396: /* check RPC packet session info */
397: if (rpc_chkPktSession(&rpc->call_session, &s->srv_session)) {
398: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
1.7 misho 399:
1.18 misho 400: rpc->call_argc ^= rpc->call_argc;
1.27 misho 401: RPC_SET_RETURN(rpc, -1);
402: RPC_SET_ERRNO(rpc, rpc_Errno);
403: goto err;
1.18 misho 404: }
1.7 misho 405:
1.27 misho 406: noreply = RPC_CHK_NOREPLY(rpc);
407:
408: /* execute RPC call */
409: schedEvent(TASK_ROOT(task), execCall, TASK_ARG(task), (int) noreply, rpc, len);
410: err:
1.18 misho 411: /* send RPC reply */
1.30.2.3 misho 412: if (!noreply && (rpc->call_io & RPC_REQ))
1.18 misho 413: schedWrite(TASK_ROOT(task), cbProto[s->srv_proto][CB_TXPACKET],
414: TASK_ARG(task), TASK_FD(task), rpc, len);
1.30.2.7! misho 415: end:
1.7 misho 416: /* lets get next packet */
1.18 misho 417: schedReadSelf(task);
1.27 misho 418: taskExit(task, NULL);
1.7 misho 419: }
420:
1.1 misho 421: static void *
1.10 misho 422: acceptClients(sched_task_t *task)
1.1 misho 423: {
1.10 misho 424: rpc_srv_t *srv = TASK_ARG(task);
425: rpc_cli_t *c = NULL;
1.29 misho 426: socklen_t salen = E_SOCKADDR_MAX;
1.21 misho 427: int sock;
428: #ifdef TCP_SESSION_TIMEOUT
429: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
430: #endif
1.7 misho 431:
1.13 misho 432: c = _allocClient(srv, NULL);
1.21 misho 433: if (!c) {
434: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
435: if ((sock = accept(TASK_FD(task), NULL, NULL)) != -1) {
436: shutdown(sock, SHUT_RDWR);
437: close(sock);
438: }
1.10 misho 439: goto end;
1.21 misho 440: }
1.10 misho 441:
442: /* accept client */
443: c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen);
444: if (c->cli_sock == -1) {
445: LOGERR;
446: AIT_FREE_VAL(&c->cli_buf);
1.14 misho 447: array_Del(srv->srv_clients, c->cli_id, 42);
1.10 misho 448: goto end;
1.30 misho 449: } else {
1.10 misho 450: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
1.30 misho 451: fcntl(c->cli_sock, F_SETFD, FD_CLOEXEC);
452: }
1.1 misho 453:
1.21 misho 454: #ifdef TCP_SESSION_TIMEOUT
455: /* armed timer for close stateless connection */
456: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
457: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT], c,
458: ts, c, 0);
459: #endif
1.13 misho 460: schedRead(TASK_ROOT(task), cbProto[srv->srv_proto][CB_RXPACKET], c,
461: c->cli_sock, NULL, 0);
1.10 misho 462: end:
463: schedReadSelf(task);
1.27 misho 464: taskExit(task, NULL);
1.10 misho 465: }
1.5 misho 466:
1.7 misho 467:
1.10 misho 468: static void *
1.13 misho 469: txUDPPacket(sched_task_t *task)
1.10 misho 470: {
471: rpc_cli_t *c = TASK_ARG(task);
472: rpc_srv_t *s = c->cli_parent;
1.13 misho 473: rpc_func_t *f = NULL;
1.18 misho 474: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1.13 misho 475: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
1.27 misho 476: int ret, wlen = sizeof(struct tagRPCCall);
1.13 misho 477: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
478:
479: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
480: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
481: TASK_ARG(task), ts, TASK_ARG(task), 0);
482:
483: if (rpc->call_argc) {
484: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
485: if (!f) {
486: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
1.27 misho 487:
1.13 misho 488: rpc->call_argc ^= rpc->call_argc;
1.27 misho 489: RPC_SET_RETURN(rpc, -1);
490: RPC_SET_ERRNO(rpc, rpc_Errno);
491: } else if (rpc_pktFreeSpace(c) > s->srv_netbuf) {
492: rpc_SetErr(EMSGSIZE, "Message too long");
493:
494: rpc->call_argc ^= rpc->call_argc;
495: RPC_SET_RETURN(rpc, -1);
496: RPC_SET_ERRNO(rpc, rpc_Errno);
1.13 misho 497: } else {
1.25 misho 498: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
1.13 misho 499: /* Go Encapsulate variables */
1.18 misho 500: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
501: RPC_RETVARS(c));
1.13 misho 502: if (ret == -1) {
503: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
1.27 misho 504:
1.13 misho 505: rpc->call_argc ^= rpc->call_argc;
1.27 misho 506: RPC_SET_RETURN(rpc, -1);
507: RPC_SET_ERRNO(rpc, rpc_Errno);
1.13 misho 508: } else
509: wlen += ret;
510: }
511: }
1.7 misho 512:
1.27 misho 513: /* Free return values */
514: ait_freeVars(&c->cli_vars);
515:
1.18 misho 516: rpc->call_len = htonl(wlen);
1.25 misho 517: rpc->call_io = RPC_ACK;
1.7 misho 518:
1.13 misho 519: /* calculate CRC */
520: rpc->call_crc ^= rpc->call_crc;
521: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
522:
523: /* send reply */
1.27 misho 524: ret = sendto(TASK_FD(task), buf, wlen, MSG_NOSIGNAL,
1.29 misho 525: &c->cli_sa.sa, e_addrlen(&c->cli_sa));
1.27 misho 526: if (ret == -1) {
527: /* close connection */
528: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
529: TASK_ARG(task), 0, NULL, 0);
1.13 misho 530: }
531:
1.27 misho 532: taskExit(task, NULL);
1.13 misho 533: }
534:
535: static void *
536: rxUDPPacket(sched_task_t *task)
537: {
538: rpc_srv_t *srv = TASK_ARG(task);
539: rpc_cli_t *c = NULL;
1.27 misho 540: int len, noreply = 0, rlen;
1.22 misho 541: u_short crc;
1.27 misho 542: struct tagRPCCall *rpc;
1.14 misho 543: sockaddr_t sa;
1.29 misho 544: socklen_t salen = E_SOCKADDR_MAX;
1.13 misho 545: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
1.27 misho 546: ait_val_t b = AIT_VAL_INIT;
1.13 misho 547:
548: /* receive connect packet */
1.27 misho 549: AIT_SET_BUF(&b, NULL, srv->srv_netbuf);
1.29 misho 550: #ifndef __linux__
551: sa.ss.ss_len = salen;
552: #endif
1.27 misho 553: rlen = recvfrom(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b), 0, &sa.sa, &salen);
554: rpc = (struct tagRPCCall*) AIT_GET_BUF(&b);
555: if (rlen < sizeof(struct tagRPCCall))
556: goto end;
557: else
558: len = ntohl(rpc->call_len);
559: if (rlen < len || len > srv->srv_netbuf)
560: goto end;
561:
562: /* skip loop packet */
563: if (rpc->call_io & RPC_ACK)
564: goto end;
565:
566: /* check integrity of packet */
567: crc = ntohs(rpc->call_crc);
568: rpc->call_crc ^= rpc->call_crc;
1.30.2.2 misho 569: if (crc != crcFletcher16((u_short*) AIT_GET_BUF(&b), len / 2))
1.27 misho 570: goto end;
571:
572: /* check RPC packet session info */
573: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session))
1.13 misho 574: goto end;
575:
576: c = _allocClient(srv, &sa);
1.22 misho 577: if (!c) {
578: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
579: usleep(2000); /* blocked client delay */
1.13 misho 580: goto end;
1.22 misho 581: } else {
1.27 misho 582: memcpy(AIT_GET_BUF(&c->cli_buf), AIT_GET_BUF(&b), len);
1.22 misho 583: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
584:
1.13 misho 585: c->cli_sock = TASK_FD(task);
586: memcpy(&c->cli_sa, &sa, sizeof c->cli_sa);
1.22 misho 587:
1.13 misho 588: /* armed timer for close stateless connection */
589: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
590: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
591: c, ts, c, 0);
592: }
593:
1.24 misho 594: noreply = RPC_CHK_NOREPLY(rpc);
595:
1.27 misho 596: /* execute RPC call */
597: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
1.24 misho 598:
599: /* send RPC reply */
1.30.2.3 misho 600: if (!noreply && (rpc->call_io & RPC_REQ))
1.24 misho 601: schedWrite(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
602: c, TASK_FD(task), rpc, len);
603: end:
1.27 misho 604: AIT_FREE_VAL(&b);
1.24 misho 605: schedReadSelf(task);
1.27 misho 606: taskExit(task, NULL);
1.24 misho 607: }
608:
609:
610: static void *
1.26 misho 611: txRAWPacket(sched_task_t *task)
612: {
613: rpc_cli_t *c = TASK_ARG(task);
614: rpc_srv_t *s = c->cli_parent;
615: rpc_func_t *f = NULL;
616: u_char *buf = AIT_GET_BUF(&c->cli_buf);
617: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
1.27 misho 618: int ret, wlen = sizeof(struct tagRPCCall);
1.26 misho 619: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
620:
621: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
622: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
623: TASK_ARG(task), ts, TASK_ARG(task), 0);
624:
625: if (rpc->call_argc) {
626: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
627: if (!f) {
628: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
1.27 misho 629:
1.26 misho 630: rpc->call_argc ^= rpc->call_argc;
1.27 misho 631: RPC_SET_RETURN(rpc, -1);
632: RPC_SET_ERRNO(rpc, rpc_Errno);
633: } else if (rpc_pktFreeSpace(c) > s->srv_netbuf) {
634: rpc_SetErr(EMSGSIZE, "Message too long");
635:
636: rpc->call_argc ^= rpc->call_argc;
637: RPC_SET_RETURN(rpc, -1);
638: RPC_SET_ERRNO(rpc, rpc_Errno);
1.26 misho 639: } else {
640: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
641: /* Go Encapsulate variables */
642: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
643: RPC_RETVARS(c));
644: if (ret == -1) {
645: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
1.27 misho 646:
1.26 misho 647: rpc->call_argc ^= rpc->call_argc;
1.27 misho 648: RPC_SET_RETURN(rpc, -1);
649: RPC_SET_ERRNO(rpc, rpc_Errno);
1.26 misho 650: } else
651: wlen += ret;
652: }
653: }
654:
1.27 misho 655: /* Free return values */
656: ait_freeVars(&c->cli_vars);
657:
1.26 misho 658: rpc->call_len = htonl(wlen);
659: rpc->call_io = RPC_ACK;
660:
661: /* calculate CRC */
662: rpc->call_crc ^= rpc->call_crc;
663: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
664:
665: /* send reply */
1.27 misho 666: ret = sendto(TASK_FD(task), buf, wlen, MSG_NOSIGNAL,
1.29 misho 667: &c->cli_sa.sa, e_addrlen(&c->cli_sa));
1.27 misho 668: if (ret == -1) {
669: /* close connection */
670: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
671: TASK_ARG(task), 0, NULL, 0);
1.26 misho 672: }
673:
1.27 misho 674: taskExit(task, NULL);
1.26 misho 675: }
676:
677: static void *
678: rxRAWPacket(sched_task_t *task)
679: {
680: rpc_srv_t *srv = TASK_ARG(task);
681: rpc_cli_t *c = NULL;
1.27 misho 682: int len, noreply = 0, rlen;
1.26 misho 683: u_short crc;
684: struct tagRPCCall *rpc;
685: sockaddr_t sa;
1.29 misho 686: socklen_t salen = E_SOCKADDR_MAX;
1.26 misho 687: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
1.27 misho 688: ait_val_t b = AIT_VAL_INIT;
1.26 misho 689:
690: /* receive connect packet */
1.27 misho 691: AIT_SET_BUF(&b, NULL, srv->srv_netbuf);
1.29 misho 692: #ifndef __linux__
693: sa.ss.ss_len = salen;
694: #endif
1.27 misho 695: rlen = recvfrom(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b), 0, &sa.sa, &salen);
696: if (sa.sa.sa_family == AF_INET) {
697: struct ip *h;
698: h = (struct ip*) AIT_GET_BUF(&b);
699: if (rlen < ntohs(h->ip_len) || h->ip_p != IPPROTO_ERPC)
700: goto end;
701: else {
702: rlen -= sizeof(struct ip);
703: rpc = (struct tagRPCCall*) (h + 1);
704: }
705: } else {
1.29 misho 706: #ifdef IPV6_REMOVE_HEADER
1.27 misho 707: struct ip6_hdr *h;
708: h = (struct ip6_hdr*) AIT_GET_BUF(&b);
1.29 misho 709: if (rlen < ntohs(h->ip6_plen) || h->ip6_nxt != IPPROTO_ERPC)
1.27 misho 710: goto end;
711: else {
712: rlen -= sizeof(struct ip6_hdr);
713: rpc = (struct tagRPCCall*) (h + 1);
714: }
1.29 misho 715: #else
716: rpc = (struct tagRPCCall*) AIT_GET_BUF(&b);
717: #endif
1.27 misho 718: }
719: if (rlen < sizeof(struct tagRPCCall))
720: goto end;
721: else
722: len = ntohl(rpc->call_len);
723: if (rlen < len || len > srv->srv_netbuf)
724: goto end;
725:
726: /* skip loop packet */
727: if (rpc->call_io & RPC_ACK)
728: goto end;
729:
730: /* check integrity of packet */
731: crc = ntohs(rpc->call_crc);
732: rpc->call_crc ^= rpc->call_crc;
1.30.2.2 misho 733: if (crc != crcFletcher16((u_short*) AIT_GET_BUF(&b), len / 2))
1.27 misho 734: goto end;
735:
736: /* check RPC packet session info */
737: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session))
1.26 misho 738: goto end;
739:
740: c = _allocClient(srv, &sa);
741: if (!c) {
742: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
743: usleep(2000); /* blocked client delay */
744: goto end;
745: } else {
1.27 misho 746: memcpy(AIT_GET_BUF(&c->cli_buf), rpc, len);
747: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
1.26 misho 748:
749: c->cli_sock = TASK_FD(task);
750: memcpy(&c->cli_sa, &sa, sizeof c->cli_sa);
751:
752: /* armed timer for close stateless connection */
753: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
754: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
755: c, ts, c, 0);
756: }
757:
758: noreply = RPC_CHK_NOREPLY(rpc);
759:
1.27 misho 760: /* execute RPC call */
761: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
1.26 misho 762:
763: /* send RPC reply */
1.30.2.3 misho 764: if (!noreply && (rpc->call_io & RPC_REQ))
1.26 misho 765: schedWrite(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
766: c, TASK_FD(task), rpc, len);
767: end:
1.27 misho 768: AIT_FREE_VAL(&b);
1.26 misho 769: schedReadSelf(task);
1.27 misho 770: taskExit(task, NULL);
1.26 misho 771: }
772:
773:
774: static void *
1.24 misho 775: txBPFPacket(sched_task_t *task)
776: {
1.29 misho 777: #ifndef __linux__
1.24 misho 778: rpc_cli_t *c = TASK_ARG(task);
779: rpc_srv_t *s = c->cli_parent;
780: rpc_func_t *f = NULL;
781: u_char *buf = AIT_GET_BUF(&c->cli_buf);
782: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
1.27 misho 783: int ret, wlen = sizeof(struct tagRPCCall);
1.24 misho 784: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
785: struct ether_header *eh;
786: ait_val_t b = AIT_VAL_INIT;
787:
788: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
789: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
790: TASK_ARG(task), ts, TASK_ARG(task), 0);
791:
792: if (rpc->call_argc) {
793: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
794: if (!f) {
795: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
1.27 misho 796:
1.24 misho 797: rpc->call_argc ^= rpc->call_argc;
1.27 misho 798: RPC_SET_RETURN(rpc, -1);
799: RPC_SET_ERRNO(rpc, rpc_Errno);
800: } else if (rpc_pktFreeSpace(c) > s->srv_netbuf) {
801: rpc_SetErr(EMSGSIZE, "Message too long");
802:
803: rpc->call_argc ^= rpc->call_argc;
804: RPC_SET_RETURN(rpc, -1);
805: RPC_SET_ERRNO(rpc, rpc_Errno);
1.24 misho 806: } else {
1.25 misho 807: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
1.24 misho 808: /* Go Encapsulate variables */
809: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
810: RPC_RETVARS(c));
811: if (ret == -1) {
812: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
1.27 misho 813:
1.24 misho 814: rpc->call_argc ^= rpc->call_argc;
1.27 misho 815: RPC_SET_RETURN(rpc, -1);
816: RPC_SET_ERRNO(rpc, rpc_Errno);
1.24 misho 817: } else
818: wlen += ret;
819: }
820: }
821:
1.27 misho 822: /* Free return values */
823: ait_freeVars(&RPC_RETVARS(c));
824:
1.24 misho 825: rpc->call_len = htonl(wlen);
1.25 misho 826: rpc->call_io = RPC_ACK;
1.24 misho 827:
828: /* calculate CRC */
829: rpc->call_crc ^= rpc->call_crc;
830: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
831:
832: /* send reply */
1.27 misho 833: AIT_SET_BUF(&b, NULL, wlen + ETHER_HDR_LEN);
1.24 misho 834: eh = (struct ether_header*) AIT_GET_BUF(&b);
835: memcpy(eh->ether_dhost, LLADDR(&c->cli_sa.sdl), ETHER_ADDR_LEN);
836: eh->ether_type = htons(RPC_DEFPORT);
1.27 misho 837: memcpy(eh + 1, buf, wlen);
1.24 misho 838:
839: ret = write(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b));
840: AIT_FREE_VAL(&b);
841: if (ret == -1) {
842: /* close connection */
843: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
844: TASK_ARG(task), 0, NULL, 0);
1.22 misho 845: }
1.29 misho 846: #else
847: rpc_SetErr(ENOTSUP, "Feature isn't supported on Linux!");
848: #endif
1.13 misho 849:
1.27 misho 850: taskExit(task, NULL);
1.24 misho 851: }
852:
853: static void *
854: rxBPFPacket(sched_task_t *task)
855: {
1.29 misho 856: #ifndef __linux__
1.24 misho 857: rpc_srv_t *srv = TASK_ARG(task);
858: rpc_cli_t *c = NULL;
859: int len, rlen, noreply;
860: u_short crc;
861: struct tagRPCCall *rpc;
862: sockaddr_t sa;
863: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
864: struct bpf_hdr *h;
865: struct ether_header *eh;
866: ait_val_t b = AIT_VAL_INIT;
867:
868: /* receive connect packet */
869: AIT_SET_BUF(&b, NULL, srv->srv_netbuf);
870: rlen = read(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b));
871: h = (struct bpf_hdr*) AIT_GET_BUF(&b);
872: rlen -= h->bh_hdrlen;
873: if (rlen < h->bh_datalen || h->bh_caplen != h->bh_datalen ||
1.27 misho 874: rlen < ETHER_HDR_LEN + sizeof(struct tagRPCCall))
1.24 misho 875: goto end;
1.27 misho 876: else {
1.24 misho 877: rlen = h->bh_caplen;
878: eh = (struct ether_header*) (AIT_GET_BUF(&b) + h->bh_hdrlen);
879: rlen -= ETHER_HDR_LEN;
880: rpc = (struct tagRPCCall*) (eh + 1);
1.25 misho 881:
1.24 misho 882: if (eh->ether_type != ntohs(RPC_DEFPORT))
883: goto end;
884: else
885: e_getlinkbymac((const ether_addr_t*) eh->ether_shost, &sa);
886: }
1.27 misho 887: if (rlen < sizeof(struct tagRPCCall))
888: goto end;
889: else
890: len = ntohl(rpc->call_len);
891: if (rlen < len || len > srv->srv_netbuf)
892: goto end;
893:
894: #ifdef CHECK_ETHACK
895: /* skip loop packet */
896: if (rpc->call_io & RPC_ACK)
897: goto end;
898: #endif
899:
900: /* check integrity of packet */
901: crc = ntohs(rpc->call_crc);
902: rpc->call_crc ^= rpc->call_crc;
903: if (crc != crcFletcher16((u_short*) rpc, len / 2))
904: goto end;
905:
906: /* check RPC packet session info */
907: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session))
908: goto end;
1.24 misho 909:
910: c = _allocClient(srv, &sa);
911: if (!c) {
912: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
913: usleep(2000); /* blocked client delay */
914: goto end;
915: } else {
1.27 misho 916: memcpy(AIT_GET_BUF(&c->cli_buf), rpc, len);
1.24 misho 917: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
918:
919: c->cli_sock = TASK_FD(task);
920: memcpy(&c->cli_sa, &sa, sizeof c->cli_sa);
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:
1.22 misho 928: noreply = RPC_CHK_NOREPLY(rpc);
1.18 misho 929:
1.27 misho 930: /* execute RPC call */
931: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
1.13 misho 932:
1.22 misho 933: /* send RPC reply */
1.30.2.3 misho 934: if (!noreply && (rpc->call_io & RPC_REQ))
1.24 misho 935: schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
1.22 misho 936: c, TASK_FD(task), rpc, len);
1.13 misho 937: end:
1.24 misho 938: AIT_FREE_VAL(&b);
1.13 misho 939: schedReadSelf(task);
1.29 misho 940: #else
941: rpc_SetErr(ENOTSUP, "Feature isn't supported on Linux!");
942: #endif
943:
1.27 misho 944: taskExit(task, NULL);
1.13 misho 945: }
946:
1.25 misho 947:
948: static void *
949: txEXTPacket(sched_task_t *task)
950: {
951: rpc_cli_t *c = TASK_ARG(task);
952: rpc_srv_t *s = c->cli_parent;
953: rpc_func_t *f = NULL;
954: u_char *buf = AIT_GET_BUF(&c->cli_buf);
955: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
1.27 misho 956: int ret, wlen = sizeof(struct tagRPCCall);
1.25 misho 957: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
958:
959: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL);
960: schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
961: TASK_ARG(task), ts, TASK_ARG(task), 0);
962:
963: if (rpc->call_argc) {
964: f = rpc_srv_getCall(s, ntohs(rpc->call_tag));
965: if (!f) {
966: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
1.27 misho 967:
968: rpc->call_argc ^= rpc->call_argc;
969: RPC_SET_RETURN(rpc, -1);
970: RPC_SET_ERRNO(rpc, rpc_Errno);
971: } else if (rpc_pktFreeSpace(c) > s->srv_netbuf) {
972: rpc_SetErr(EMSGSIZE, "Message too long");
973:
1.25 misho 974: rpc->call_argc ^= rpc->call_argc;
1.27 misho 975: RPC_SET_RETURN(rpc, -1);
976: RPC_SET_ERRNO(rpc, rpc_Errno);
1.25 misho 977: } else {
978: rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c));
979: /* Go Encapsulate variables */
980: ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen,
981: RPC_RETVARS(c));
982: if (ret == -1) {
983: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
1.27 misho 984:
1.25 misho 985: rpc->call_argc ^= rpc->call_argc;
1.27 misho 986: RPC_SET_RETURN(rpc, -1);
987: RPC_SET_ERRNO(rpc, rpc_Errno);
1.25 misho 988: } else
989: wlen += ret;
990: }
991: }
992:
1.27 misho 993: /* Free return values */
994: ait_freeVars(&RPC_RETVARS(c));
995:
1.25 misho 996: rpc->call_len = htonl(wlen);
997: rpc->call_io = RPC_ACK;
998:
999: /* send reply */
1.27 misho 1000: ret = write(TASK_FD(task), buf, wlen);
1.25 misho 1001: if (ret == -1) {
1002: /* close connection */
1003: schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT],
1004: TASK_ARG(task), 0, NULL, 0);
1005: }
1006:
1.27 misho 1007: taskExit(task, NULL);
1.25 misho 1008: }
1009:
1010: static void *
1011: rxEXTPacket(sched_task_t *task)
1012: {
1013: rpc_srv_t *srv = TASK_ARG(task);
1014: rpc_cli_t *c = NULL;
1.27 misho 1015: int len, noreply = 0, rlen = AIT_LEN(&c->cli_buf);
1.25 misho 1016: struct tagRPCCall *rpc;
1017: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
1.27 misho 1018: sockaddr_t sa;
1.25 misho 1019: ait_val_t b = AIT_VAL_INIT;
1020:
1021: memset(&sa, 0, sizeof sa);
1022: /* receive connect packet */
1023: AIT_SET_BUF(&b, NULL, srv->srv_netbuf);
1024: rlen = read(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b));
1.27 misho 1025: rpc = (struct tagRPCCall*) AIT_GET_BUF(&b);
1026: if (rlen < sizeof(struct tagRPCCall))
1027: goto end;
1028: else
1029: len = ntohl(rpc->call_len);
1030: if (rlen < len || len > srv->srv_netbuf)
1031: goto end;
1032:
1033: /* skip loop packet */
1034: if (rpc->call_io & RPC_ACK)
1.25 misho 1035: goto end;
1036:
1.27 misho 1037: /* check RPC packet session info */
1038: if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session))
1039: goto end;
1.25 misho 1040:
1041: c = _allocClient(srv, &sa);
1042: if (!c) {
1043: EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n");
1044: usleep(2000); /* blocked client delay */
1045: goto end;
1046: } else {
1.27 misho 1047: memcpy(AIT_GET_BUF(&c->cli_buf), AIT_GET_BUF(&b), len);
1.25 misho 1048: rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf);
1049:
1050: c->cli_sock = TASK_FD(task);
1051:
1052: /* armed timer for close stateless connection */
1053: schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL);
1054: schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT],
1055: c, ts, c, 0);
1056: }
1057:
1058: noreply = RPC_CHK_NOREPLY(rpc);
1059:
1.27 misho 1060: /* execute RPC call */
1061: schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len);
1.25 misho 1062:
1063: /* send RPC reply */
1.30.2.3 misho 1064: if (!noreply && (rpc->call_io & RPC_REQ))
1.25 misho 1065: schedWrite(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET],
1066: c, TASK_FD(task), rpc, len);
1067: end:
1068: AIT_FREE_VAL(&b);
1069: schedReadSelf(task);
1.27 misho 1070: taskExit(task, NULL);
1.25 misho 1071: }
1072:
1.13 misho 1073: /* ------------------------------------------------------ */
1074:
1.16 misho 1075: void
1.13 misho 1076: rpc_freeBLOBCli(rpc_cli_t * __restrict c)
1077: {
1078: rpc_srv_t *s = c->cli_parent;
1079:
1080: schedCancelby(s->srv_blob.root, taskMAX, CRITERIA_ARG, c, NULL);
1.10 misho 1081:
1082: /* free buffer */
1083: AIT_FREE_VAL(&c->cli_buf);
1084:
1.14 misho 1085: array_Del(s->srv_blob.clients, c->cli_id, 0);
1.10 misho 1086: if (c)
1.14 misho 1087: e_free(c);
1.13 misho 1088: }
1089:
1090:
1091: static void *
1092: closeBLOBClient(sched_task_t *task)
1093: {
1094: int sock = ((rpc_cli_t*) TASK_ARG(task))->cli_sock;
1095:
1096: rpc_freeBLOBCli(TASK_ARG(task));
1097:
1098: /* close client socket */
1099: shutdown(sock, SHUT_RDWR);
1100: close(sock);
1.27 misho 1101: taskExit(task, NULL);
1.7 misho 1102: }
1103:
1104: static void *
1105: txBLOB(sched_task_t *task)
1106: {
1.10 misho 1107: rpc_cli_t *c = TASK_ARG(task);
1108: u_char *buf = AIT_GET_BUF(&c->cli_buf);
1.7 misho 1109: int wlen = sizeof(struct tagBLOBHdr);
1110:
1111: /* send reply */
1.10 misho 1112: wlen = send(TASK_FD(task), buf, wlen, MSG_NOSIGNAL);
1113: if (wlen == -1 || wlen != sizeof(struct tagBLOBHdr)) {
1114: /* close blob connection */
1115: schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0);
1116: }
1.7 misho 1117:
1.27 misho 1118: taskExit(task, NULL);
1.7 misho 1119: }
1.4 misho 1120:
1.7 misho 1121: static void *
1122: rxBLOB(sched_task_t *task)
1123: {
1124: rpc_cli_t *c = TASK_ARG(task);
1125: rpc_srv_t *s = c->cli_parent;
1126: rpc_blob_t *b;
1.10 misho 1127: struct tagBLOBHdr blob;
1.7 misho 1128: int rlen;
1129:
1.10 misho 1130: memset(&blob, 0, sizeof blob);
1131: rlen = recv(TASK_FD(task), &blob, sizeof blob, 0);
1132: if (rlen < 1) {
1133: /* close blob connection */
1134: schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0);
1.27 misho 1135: taskExit(task, NULL);
1.7 misho 1136: }
1.5 misho 1137:
1.10 misho 1138: /* check BLOB packet */
1139: if (rlen < sizeof(struct tagBLOBHdr)) {
1140: rpc_SetErr(ERPCMISMATCH, "Short BLOB packet");
1.6 misho 1141:
1.10 misho 1142: schedReadSelf(task);
1.27 misho 1143: taskExit(task, NULL);
1.7 misho 1144: }
1.1 misho 1145:
1.7 misho 1146: /* check RPC packet session info */
1.15 misho 1147: if (rpc_chkPktSession(&blob.hdr_session, &s->srv_session)) {
1.7 misho 1148: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
1.10 misho 1149: blob.hdr_cmd = error;
1.7 misho 1150: goto end;
1151: }
1152:
1153: /* Go to proceed packet ... */
1.10 misho 1154: switch (blob.hdr_cmd) {
1.7 misho 1155: case get:
1.10 misho 1156: if (!(b = rpc_srv_getBLOB(s, ntohl(blob.hdr_var)))) {
1157: rpc_SetErr(EINVAL, "Var=%x not found", ntohl(blob.hdr_var));
1158: blob.hdr_cmd = no;
1.27 misho 1159: RPC_SET_BLOB_RET(&blob, -1);
1.7 misho 1160: break;
1161: } else
1.10 misho 1162: blob.hdr_len = htonl(b->blob_len);
1.5 misho 1163:
1.7 misho 1164: if (rpc_srv_blobMap(s, b) != -1) {
1165: /* deliver BLOB variable to client */
1.10 misho 1166: blob.hdr_ret = htonl(rpc_srv_sendBLOB(c, b));
1.7 misho 1167: rpc_srv_blobUnmap(b);
1168: } else {
1.10 misho 1169: blob.hdr_cmd = error;
1.27 misho 1170: RPC_SET_BLOB_RET(&blob, -1);
1.7 misho 1171: }
1172: break;
1173: case set:
1.17 misho 1174: if ((b = rpc_srv_registerBLOB(s, ntohl(blob.hdr_len),
1175: ntohl(blob.hdr_ret)))) {
1.7 misho 1176: /* set new BLOB variable for reply :) */
1.10 misho 1177: blob.hdr_var = htonl(b->blob_var);
1.7 misho 1178:
1179: /* receive BLOB from client */
1.10 misho 1180: blob.hdr_ret = htonl(rpc_srv_recvBLOB(c, b));
1.7 misho 1181: rpc_srv_blobUnmap(b);
1.5 misho 1182: } else {
1.10 misho 1183: blob.hdr_cmd = error;
1.27 misho 1184: RPC_SET_BLOB_RET(&blob, -1);
1.7 misho 1185: }
1186: break;
1187: case unset:
1.11 misho 1188: if (rpc_srv_unregisterBLOB(s, ntohl(blob.hdr_var)) == -1) {
1.10 misho 1189: blob.hdr_cmd = error;
1.27 misho 1190: RPC_SET_BLOB_RET(&blob, -1);
1.1 misho 1191: }
1192: break;
1.7 misho 1193: default:
1.10 misho 1194: rpc_SetErr(EPROCUNAVAIL, "Unsupported BLOB command %d", blob.hdr_cmd);
1195: blob.hdr_cmd = error;
1.27 misho 1196: RPC_SET_BLOB_RET(&blob, -1);
1.7 misho 1197: }
1.1 misho 1198:
1.7 misho 1199: end:
1.10 misho 1200: memcpy(AIT_ADDR(&c->cli_buf), &blob, sizeof blob);
1201: schedWrite(TASK_ROOT(task), txBLOB, TASK_ARG(task), TASK_FD(task), NULL, 0);
1202: schedReadSelf(task);
1.27 misho 1203: taskExit(task, NULL);
1.2 misho 1204: }
1205:
1206: static void *
1.17 misho 1207: flushBLOB(sched_task_t *task)
1208: {
1.28 misho 1209: #ifdef atomic_load_acq_ptr
1.23 misho 1210: uintptr_t sigArg = atomic_load_acq_ptr(&_glSigArg);
1.28 misho 1211: #else
1212: uintptr_t sigArg = *((volatile uintptr_t*) &_glSigArg);
1213: #endif
1.23 misho 1214: rpc_srv_t *srv = sigArg ? (void*) sigArg : TASK_ARG(task);
1.17 misho 1215: rpc_blob_t *b, *tmp;
1216:
1217: TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) {
1218: TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node);
1219:
1220: rpc_srv_blobFree(srv, b);
1221: e_free(b);
1222: }
1223:
1.29 misho 1224: if (sigArg) {
1.23 misho 1225: /* disabled kqueue support in libaitsched */
1226: struct sigaction sa;
1227:
1228: memset(&sa, 0, sizeof sa);
1229: sigemptyset(&sa.sa_mask);
1230: sa.sa_handler = (void (*)(int)) flushBLOB;
1231: sa.sa_flags = SA_RESTART | SA_RESETHAND;
1232: sigaction(SIGFBLOB, &sa, NULL);
1.29 misho 1233: return NULL;
1234: } else {
1235: schedSignalSelf(task);
1236: taskExit(task, NULL);
1.23 misho 1237: }
1.17 misho 1238: }
1239:
1240: static void *
1.10 misho 1241: acceptBLOBClients(sched_task_t *task)
1.2 misho 1242: {
1.10 misho 1243: rpc_srv_t *srv = TASK_ARG(task);
1244: rpc_cli_t *c = NULL;
1245: register int i;
1.29 misho 1246: socklen_t salen = E_SOCKADDR_MAX;
1.21 misho 1247: int sock;
1.12 misho 1248: #ifdef TCP_NOPUSH
1249: int n = 1;
1250: #endif
1.7 misho 1251:
1.10 misho 1252: /* check free slots for connect */
1.14 misho 1253: for (i = 0; i < array_Size(srv->srv_blob.clients) &&
1254: (c = array(srv->srv_blob.clients, i, rpc_cli_t*)); i++);
1.21 misho 1255: if (c) { /* no more free slots! */
1256: EVERBOSE(1, "BLOB client quota exceeded! Connection will be shutdown!\n");
1257: if ((sock = accept(TASK_FD(task), NULL, NULL)) != -1) {
1258: shutdown(sock, SHUT_RDWR);
1259: close(sock);
1260: }
1.10 misho 1261: goto end;
1.21 misho 1262: }
1263:
1.14 misho 1264: c = e_malloc(sizeof(rpc_cli_t));
1.10 misho 1265: if (!c) {
1.7 misho 1266: LOGERR;
1.10 misho 1267: srv->srv_kill = srv->srv_blob.kill = 1;
1.27 misho 1268: taskExit(task, NULL);
1.7 misho 1269: } else {
1.10 misho 1270: memset(c, 0, sizeof(rpc_cli_t));
1.14 misho 1271: array_Set(srv->srv_blob.clients, i, c);
1.10 misho 1272: c->cli_id = i;
1273: c->cli_parent = srv;
1.7 misho 1274: }
1.4 misho 1275:
1.10 misho 1276: /* alloc empty buffer */
1.14 misho 1277: AIT_SET_BUFSIZ(&c->cli_buf, 0, srv->srv_netbuf);
1.2 misho 1278:
1.10 misho 1279: /* accept client */
1280: c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen);
1281: if (c->cli_sock == -1) {
1282: LOGERR;
1283: AIT_FREE_VAL(&c->cli_buf);
1.14 misho 1284: array_Del(srv->srv_blob.clients, i, 42);
1.10 misho 1285: goto end;
1.12 misho 1286: } else {
1287: #ifdef TCP_NOPUSH
1288: setsockopt(c->cli_sock, IPPROTO_TCP, TCP_NOPUSH, &n, sizeof n);
1289: #endif
1.10 misho 1290: fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK);
1.30 misho 1291: fcntl(c->cli_sock, F_SETFD, FD_CLOEXEC);
1.12 misho 1292: }
1.2 misho 1293:
1.10 misho 1294: schedRead(TASK_ROOT(task), rxBLOB, c, c->cli_sock, NULL, 0);
1295: end:
1296: schedReadSelf(task);
1.27 misho 1297: taskExit(task, NULL);
1.1 misho 1298: }
1299:
1.10 misho 1300: /* ------------------------------------------------------ */
1.1 misho 1301:
1302: /*
1.7 misho 1303: * rpc_srv_initBLOBServer() - Init & create BLOB Server
1304: *
1.4 misho 1305: * @srv = RPC server instance
1.2 misho 1306: * @Port = Port for bind server, if Port == 0 default port is selected
1307: * @diskDir = Disk place for BLOB file objects
1308: * return: -1 == error or 0 bind and created BLOB server instance
1309: */
1310: int
1311: rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, u_short Port, const char *diskDir)
1312: {
1313: int n = 1;
1.29 misho 1314: socklen_t salen;
1.2 misho 1315:
1.10 misho 1316: if (!srv || srv->srv_kill) {
1.7 misho 1317: rpc_SetErr(EINVAL, "Invalid parameters can`t init BLOB server");
1.2 misho 1318: return -1;
1319: }
1320:
1321: memset(&srv->srv_blob, 0, sizeof srv->srv_blob);
1322: if (access(diskDir, R_OK | W_OK) == -1) {
1323: LOGERR;
1324: return -1;
1325: } else
1.7 misho 1326: AIT_SET_STR(&srv->srv_blob.dir, diskDir);
1.2 misho 1327:
1.10 misho 1328: /* init blob list */
1329: TAILQ_INIT(&srv->srv_blob.blobs);
1330:
1.2 misho 1331: srv->srv_blob.server.cli_parent = srv;
1.4 misho 1332:
1.29 misho 1333: memcpy(&srv->srv_blob.server.cli_sa, &srv->srv_server.cli_sa, sizeof srv->srv_blob.server.cli_sa);
1.10 misho 1334: switch (srv->srv_blob.server.cli_sa.sa.sa_family) {
1.4 misho 1335: case AF_INET:
1.10 misho 1336: srv->srv_blob.server.cli_sa.sin.sin_port =
1337: htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin.sin_port) + 1);
1.29 misho 1338: salen = sizeof srv->srv_blob.server.cli_sa.sin;
1.4 misho 1339: break;
1340: case AF_INET6:
1.10 misho 1341: srv->srv_blob.server.cli_sa.sin6.sin6_port =
1342: htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin6.sin6_port) + 1);
1.29 misho 1343: salen = sizeof srv->srv_blob.server.cli_sa.sin6;
1.4 misho 1344: break;
1345: case AF_LOCAL:
1.10 misho 1346: strlcat(srv->srv_blob.server.cli_sa.sun.sun_path, ".blob",
1347: sizeof srv->srv_blob.server.cli_sa.sun.sun_path);
1.29 misho 1348: salen = sizeof srv->srv_blob.server.cli_sa.sun;
1.4 misho 1349: break;
1350: default:
1.7 misho 1351: AIT_FREE_VAL(&srv->srv_blob.dir);
1.4 misho 1352: return -1;
1.2 misho 1353: }
1354:
1.4 misho 1355: /* create BLOB server socket */
1.6 misho 1356: srv->srv_blob.server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, SOCK_STREAM, 0);
1.2 misho 1357: if (srv->srv_blob.server.cli_sock == -1) {
1358: LOGERR;
1.7 misho 1359: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 1360: return -1;
1361: }
1362: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
1363: LOGERR;
1364: close(srv->srv_blob.server.cli_sock);
1.7 misho 1365: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 1366: return -1;
1367: }
1.5 misho 1368: n = srv->srv_netbuf;
1369: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
1370: LOGERR;
1371: close(srv->srv_blob.server.cli_sock);
1.7 misho 1372: AIT_FREE_VAL(&srv->srv_blob.dir);
1.5 misho 1373: return -1;
1374: }
1375: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
1376: LOGERR;
1377: close(srv->srv_blob.server.cli_sock);
1.7 misho 1378: AIT_FREE_VAL(&srv->srv_blob.dir);
1.5 misho 1379: return -1;
1380: }
1.29 misho 1381: if (bind(srv->srv_blob.server.cli_sock, &srv->srv_blob.server.cli_sa.sa, salen) == -1) {
1.2 misho 1382: LOGERR;
1383: close(srv->srv_blob.server.cli_sock);
1.7 misho 1384: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 1385: return -1;
1.13 misho 1386: } else
1387: fcntl(srv->srv_blob.server.cli_sock, F_SETFL,
1388: fcntl(srv->srv_blob.server.cli_sock, F_GETFL) | O_NONBLOCK);
1389:
1.2 misho 1390:
1.10 misho 1391: /* allocate pool for concurent blob clients */
1.14 misho 1392: srv->srv_blob.clients = array_Init(array_Size(srv->srv_clients));
1.2 misho 1393: if (!srv->srv_blob.clients) {
1.14 misho 1394: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1.2 misho 1395: close(srv->srv_blob.server.cli_sock);
1.7 misho 1396: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 1397: return -1;
1.10 misho 1398: }
1.2 misho 1399:
1.10 misho 1400: /* init blob scheduler */
1401: srv->srv_blob.root = schedBegin();
1402: if (!srv->srv_blob.root) {
1403: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1.14 misho 1404: array_Destroy(&srv->srv_blob.clients);
1.10 misho 1405: close(srv->srv_blob.server.cli_sock);
1406: AIT_FREE_VAL(&srv->srv_blob.dir);
1407: return -1;
1.30.2.5 misho 1408: }
1.2 misho 1409:
1410: return 0;
1411: }
1412:
1413: /*
1.7 misho 1414: * rpc_srv_endBLOBServer() - Destroy BLOB server, close all opened sockets and free resources
1415: *
1.2 misho 1416: * @srv = RPC Server instance
1417: * return: none
1418: */
1.16 misho 1419: void
1.2 misho 1420: rpc_srv_endBLOBServer(rpc_srv_t * __restrict srv)
1421: {
1.10 misho 1422: if (!srv)
1.2 misho 1423: return;
1424:
1.10 misho 1425: srv->srv_blob.kill = 1;
1.17 misho 1426:
1.27 misho 1427: if (srv->srv_blob.server.cli_sa.sa.sa_family == AF_LOCAL)
1428: unlink(srv->srv_blob.server.cli_sa.sun.sun_path);
1.28 misho 1429:
1430: schedEnd(&srv->srv_blob.root);
1.2 misho 1431: }
1432:
1433: /*
1.10 misho 1434: * rpc_srv_loopBLOBServer() - Execute Main BLOB server loop and wait for clients requests
1.7 misho 1435: *
1.2 misho 1436: * @srv = RPC Server instance
1437: * return: -1 error or 0 ok, infinite loop ...
1438: */
1439: int
1.10 misho 1440: rpc_srv_loopBLOBServer(rpc_srv_t * __restrict srv)
1.2 misho 1441: {
1.10 misho 1442: rpc_cli_t *c;
1.2 misho 1443: register int i;
1.10 misho 1444: rpc_blob_t *b, *tmp;
1445: struct timespec ts = { RPC_SCHED_POLLING, 0 };
1.2 misho 1446:
1.10 misho 1447: if (!srv || srv->srv_kill) {
1.7 misho 1448: rpc_SetErr(EINVAL, "Invalid parameter can`t start BLOB server");
1.2 misho 1449: return -1;
1450: }
1451:
1.14 misho 1452: if (listen(srv->srv_blob.server.cli_sock, array_Size(srv->srv_blob.clients)) == -1) {
1.2 misho 1453: LOGERR;
1454: return -1;
1.10 misho 1455: }
1456:
1.23 misho 1457: if (!schedSignal(srv->srv_blob.root, flushBLOB, srv, SIGFBLOB, NULL, 0)) {
1458: /* disabled kqueue support in libaitsched */
1459: struct sigaction sa;
1460:
1.28 misho 1461: #ifdef atomic_store_rel_ptr
1.23 misho 1462: atomic_store_rel_ptr(&_glSigArg, (uintptr_t) srv);
1.28 misho 1463: #else
1464: *((volatile uintptr_t*) &_glSigArg) = (uintptr_t) srv;
1465: #endif
1.23 misho 1466:
1467: memset(&sa, 0, sizeof sa);
1468: sigemptyset(&sa.sa_mask);
1469: sa.sa_handler = (void (*)(int)) flushBLOB;
1470: sa.sa_flags = SA_RESTART | SA_RESETHAND;
1471: sigaction(SIGFBLOB, &sa, NULL);
1472: }
1473:
1.10 misho 1474: if (!schedRead(srv->srv_blob.root, acceptBLOBClients, srv,
1475: srv->srv_blob.server.cli_sock, NULL, 0)) {
1476: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1477: return -1;
1478: }
1.2 misho 1479:
1.10 misho 1480: schedPolling(srv->srv_blob.root, &ts, NULL);
1481: /* main rpc loop */
1482: schedRun(srv->srv_blob.root, &srv->srv_blob.kill);
1.7 misho 1483:
1.17 misho 1484: /* detach blobs */
1485: TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) {
1486: TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node);
1487:
1488: rpc_srv_blobFree(srv, b);
1489: e_free(b);
1490: }
1491:
1.10 misho 1492: /* close all clients connections & server socket */
1.14 misho 1493: for (i = 0; i < array_Size(srv->srv_blob.clients); i++) {
1494: c = array(srv->srv_blob.clients, i, rpc_cli_t*);
1.10 misho 1495: if (c) {
1496: shutdown(c->cli_sock, SHUT_RDWR);
1497: close(c->cli_sock);
1498:
1499: schedCancelby(srv->srv_blob.root, taskMAX, CRITERIA_ARG, c, NULL);
1500: AIT_FREE_VAL(&c->cli_buf);
1.2 misho 1501: }
1.14 misho 1502: array_Del(srv->srv_blob.clients, i, 42);
1.10 misho 1503: }
1.14 misho 1504: array_Destroy(&srv->srv_blob.clients);
1.2 misho 1505:
1.10 misho 1506: close(srv->srv_blob.server.cli_sock);
1.2 misho 1507:
1.10 misho 1508: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 1509: return 0;
1510: }
1511:
1512:
1513: /*
1.7 misho 1514: * rpc_srv_initServer() - Init & create RPC Server
1515: *
1.15 misho 1516: * @InstID = Instance for authentication & recognition
1.1 misho 1517: * @concurentClients = Concurent clients at same time to this server
1.10 misho 1518: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
1.4 misho 1519: * @csHost = Host name or address for bind server, if NULL any address
1.1 misho 1520: * @Port = Port for bind server, if Port == 0 default port is selected
1.13 misho 1521: * @proto = Protocol, if == 0 choose SOCK_STREAM
1.1 misho 1522: * return: NULL == error or !=NULL bind and created RPC server instance
1523: */
1524: rpc_srv_t *
1.15 misho 1525: rpc_srv_initServer(u_char InstID, int concurentClients, int netBuf,
1526: const char *csHost, u_short Port, int proto)
1.1 misho 1527: {
1.10 misho 1528: int n = 1;
1.1 misho 1529: rpc_srv_t *srv = NULL;
1.14 misho 1530: sockaddr_t sa = E_SOCKADDR_INIT;
1.29 misho 1531: socklen_t salen;
1.1 misho 1532:
1.25 misho 1533: if (!concurentClients || (proto < 0 || proto > SOCK_RAW)) {
1.10 misho 1534: rpc_SetErr(EINVAL, "Invalid parameters can`t init RPC server");
1.1 misho 1535: return NULL;
1536: }
1.27 misho 1537: if (!Port && proto < SOCK_RAW)
1538: Port = RPC_DEFPORT;
1.29 misho 1539: if (!(salen = e_gethostbyname(csHost, Port, &sa)))
1.10 misho 1540: return NULL;
1.13 misho 1541: if (!proto)
1542: proto = SOCK_STREAM;
1.10 misho 1543: if (netBuf < RPC_MIN_BUFSIZ)
1.5 misho 1544: netBuf = BUFSIZ;
1.7 misho 1545: else
1.14 misho 1546: netBuf = E_ALIGN(netBuf, 2); /* align netBuf length */
1.10 misho 1547:
1548: #ifdef HAVE_SRANDOMDEV
1549: srandomdev();
1550: #else
1551: time_t tim;
1552:
1553: srandom((time(&tim) ^ getpid()));
1554: #endif
1.1 misho 1555:
1.14 misho 1556: srv = e_malloc(sizeof(rpc_srv_t));
1.1 misho 1557: if (!srv) {
1558: LOGERR;
1559: return NULL;
1560: } else
1561: memset(srv, 0, sizeof(rpc_srv_t));
1562:
1.13 misho 1563: srv->srv_proto = proto;
1.5 misho 1564: srv->srv_netbuf = netBuf;
1.1 misho 1565: srv->srv_session.sess_version = RPC_VERSION;
1.15 misho 1566: srv->srv_session.sess_instance = InstID;
1.1 misho 1567:
1568: srv->srv_server.cli_parent = srv;
1.10 misho 1569: memcpy(&srv->srv_server.cli_sa, &sa, sizeof srv->srv_server.cli_sa);
1570:
1.12 misho 1571: /* init functions */
1572: pthread_mutex_init(&srv->srv_funcs.mtx, NULL);
1573: SLIST_INIT(&srv->srv_funcs);
1574: AVL_INIT(&srv->srv_funcs);
1.10 misho 1575:
1576: /* init scheduler */
1577: srv->srv_root = schedBegin();
1578: if (!srv->srv_root) {
1579: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1.12 misho 1580: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1.14 misho 1581: e_free(srv);
1.10 misho 1582: return NULL;
1.30.2.3 misho 1583: } else
1584: schedSignalDispatch(srv->srv_root, 42);
1.10 misho 1585:
1586: /* init pool for clients */
1.14 misho 1587: srv->srv_clients = array_Init(concurentClients);
1.10 misho 1588: if (!srv->srv_clients) {
1.14 misho 1589: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1.10 misho 1590: schedEnd(&srv->srv_root);
1.12 misho 1591: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1.14 misho 1592: e_free(srv);
1.10 misho 1593: return NULL;
1594: }
1.4 misho 1595:
1596: /* create server socket */
1.26 misho 1597: srv->srv_server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family,
1598: srv->srv_proto, srv->srv_proto == SOCK_RAW ? IPPROTO_ERPC : 0);
1.1 misho 1599: if (srv->srv_server.cli_sock == -1) {
1600: LOGERR;
1.14 misho 1601: array_Destroy(&srv->srv_clients);
1.10 misho 1602: schedEnd(&srv->srv_root);
1.12 misho 1603: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1.14 misho 1604: e_free(srv);
1.1 misho 1605: return NULL;
1606: }
1607: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
1608: LOGERR;
1.10 misho 1609: goto err;
1.1 misho 1610: }
1.27 misho 1611: if (srv->srv_proto == SOCK_STREAM)
1612: setsockopt(srv->srv_server.cli_sock, IPPROTO_TCP, TCP_NODELAY, &n, sizeof n);
1.5 misho 1613: n = srv->srv_netbuf;
1614: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
1615: LOGERR;
1.10 misho 1616: goto err;
1.5 misho 1617: }
1618: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
1619: LOGERR;
1.10 misho 1620: goto err;
1.5 misho 1621: }
1.29 misho 1622: if (bind(srv->srv_server.cli_sock, &srv->srv_server.cli_sa.sa, salen) == -1) {
1.1 misho 1623: LOGERR;
1.10 misho 1624: goto err;
1.13 misho 1625: } else
1626: fcntl(srv->srv_server.cli_sock, F_SETFL,
1627: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
1.1 misho 1628:
1.10 misho 1629: rpc_register_srvPing(srv);
1.8 misho 1630:
1.1 misho 1631: return srv;
1.10 misho 1632: err: /* error condition */
1633: close(srv->srv_server.cli_sock);
1.14 misho 1634: array_Destroy(&srv->srv_clients);
1.10 misho 1635: schedEnd(&srv->srv_root);
1.12 misho 1636: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1.14 misho 1637: e_free(srv);
1.10 misho 1638: return NULL;
1.1 misho 1639: }
1640:
1641: /*
1.7 misho 1642: * rpc_srv_endServer() - Destroy RPC server, close all opened sockets and free resources
1643: *
1.6 misho 1644: * @psrv = RPC Server instance
1.1 misho 1645: * return: none
1646: */
1.16 misho 1647: void
1.6 misho 1648: rpc_srv_endServer(rpc_srv_t ** __restrict psrv)
1.1 misho 1649: {
1.10 misho 1650: if (!psrv || !*psrv)
1.1 misho 1651: return;
1652:
1.10 misho 1653: /* if send kill to blob server */
1.17 misho 1654: rpc_srv_endBLOBServer(*psrv);
1.28 misho 1655: /* wait for BLOB server done */
1656: while (*(&(*psrv)->srv_blob.root))
1657: usleep(1000);
1.1 misho 1658:
1.10 misho 1659: (*psrv)->srv_kill = 1;
1660: sleep(RPC_SCHED_POLLING);
1.2 misho 1661:
1.27 misho 1662: if ((*psrv)->srv_server.cli_sa.sa.sa_family == AF_LOCAL)
1663: unlink((*psrv)->srv_server.cli_sa.sun.sun_path);
1664:
1.28 misho 1665: schedEnd(&(*psrv)->srv_root);
1666:
1.12 misho 1667: pthread_mutex_destroy(&(*psrv)->srv_funcs.mtx);
1.14 misho 1668: e_free(*psrv);
1.6 misho 1669: *psrv = NULL;
1.1 misho 1670: }
1671:
1672: /*
1.7 misho 1673: * rpc_srv_loopServer() - Execute Main server loop and wait for clients requests
1674: *
1.1 misho 1675: * @srv = RPC Server instance
1676: * return: -1 error or 0 ok, infinite loop ...
1677: */
1678: int
1.5 misho 1679: rpc_srv_loopServer(rpc_srv_t * __restrict srv)
1.1 misho 1680: {
1.10 misho 1681: rpc_cli_t *c;
1.1 misho 1682: register int i;
1.12 misho 1683: rpc_func_t *f;
1.10 misho 1684: struct timespec ts = { RPC_SCHED_POLLING, 0 };
1.1 misho 1685:
1686: if (!srv) {
1.10 misho 1687: rpc_SetErr(EINVAL, "Invalid parameter can`t start RPC server");
1.1 misho 1688: return -1;
1689: }
1690:
1.13 misho 1691: if (srv->srv_proto == SOCK_STREAM)
1.14 misho 1692: if (listen(srv->srv_server.cli_sock, array_Size(srv->srv_clients)) == -1) {
1.13 misho 1693: LOGERR;
1694: return -1;
1695: }
1.1 misho 1696:
1.13 misho 1697: if (!schedRead(srv->srv_root, cbProto[srv->srv_proto][CB_ACCEPTCLIENT], srv,
1698: srv->srv_server.cli_sock, NULL, 0)) {
1.10 misho 1699: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1700: return -1;
1701: }
1.7 misho 1702:
1.10 misho 1703: schedPolling(srv->srv_root, &ts, NULL);
1.7 misho 1704: /* main rpc loop */
1.10 misho 1705: schedRun(srv->srv_root, &srv->srv_kill);
1.30.2.3 misho 1706: schedSignalDispatch(srv->srv_root, 0);
1.10 misho 1707:
1708: /* close all clients connections & server socket */
1.14 misho 1709: for (i = 0; i < array_Size(srv->srv_clients); i++) {
1710: c = array(srv->srv_clients, i, rpc_cli_t*);
1.10 misho 1711: if (c) {
1.24 misho 1712: if (srv->srv_proto == SOCK_STREAM) {
1713: shutdown(c->cli_sock, SHUT_RDWR);
1714: close(c->cli_sock);
1715: }
1.10 misho 1716:
1717: schedCancelby(srv->srv_root, taskMAX, CRITERIA_ARG, c, NULL);
1.14 misho 1718: ait_freeVars(&RPC_RETVARS(c));
1.10 misho 1719: AIT_FREE_VAL(&c->cli_buf);
1.1 misho 1720: }
1.14 misho 1721: array_Del(srv->srv_clients, i, 42);
1.10 misho 1722: }
1.14 misho 1723: array_Destroy(&srv->srv_clients);
1.2 misho 1724:
1.25 misho 1725: if (srv->srv_proto != SOCK_EXT)
1726: close(srv->srv_server.cli_sock);
1.2 misho 1727:
1.10 misho 1728: /* detach exported calls */
1.12 misho 1729: RPC_FUNCS_LOCK(&srv->srv_funcs);
1730: while ((f = SLIST_FIRST(&srv->srv_funcs))) {
1731: SLIST_REMOVE_HEAD(&srv->srv_funcs, func_next);
1.1 misho 1732:
1.10 misho 1733: AIT_FREE_VAL(&f->func_name);
1.14 misho 1734: e_free(f);
1.1 misho 1735: }
1.12 misho 1736: srv->srv_funcs.avlh_root = NULL;
1737: RPC_FUNCS_UNLOCK(&srv->srv_funcs);
1.1 misho 1738:
1739: return 0;
1740: }
1741:
1742:
1743: /*
1744: * rpc_srv_execCall() Execute registered call from RPC server
1.7 misho 1745: *
1.10 misho 1746: * @cli = RPC client
1.1 misho 1747: * @rpc = IN RPC call structure
1.10 misho 1748: * @funcname = Execute RPC function
1.5 misho 1749: * @args = IN RPC calling arguments from RPC client
1.1 misho 1750: * return: -1 error, !=-1 ok
1751: */
1752: int
1.10 misho 1753: rpc_srv_execCall(rpc_cli_t * __restrict cli, struct tagRPCCall * __restrict rpc,
1754: ait_val_t funcname, array_t * __restrict args)
1.1 misho 1755: {
1756: rpc_callback_t func;
1757:
1.10 misho 1758: if (!cli || !rpc || !AIT_ADDR(&funcname)) {
1.7 misho 1759: rpc_SetErr(EINVAL, "Invalid parameter can`t exec function");
1.1 misho 1760: return -1;
1761: }
1762:
1.10 misho 1763: func = AIT_GET_LIKE(&funcname, rpc_callback_t);
1764: return func(cli, rpc, args);
1.1 misho 1765: }
1.24 misho 1766:
1767:
1768: /*
1769: * rpc_srv_initServer2() - Init & create layer2 RPC Server
1770: *
1771: * @InstID = Instance for authentication & recognition
1772: * @concurentClients = Concurent clients at same time to this server
1773: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
1774: * @csIface = Interface name for bind server, if NULL first interface on host
1775: * return: NULL == error or !=NULL bind and created RPC server instance
1776: */
1777: rpc_srv_t *
1778: rpc_srv_initServer2(u_char InstID, int concurentClients, int netBuf, const char *csIface)
1779: {
1.29 misho 1780: #ifndef __linux__
1.24 misho 1781: int n = 1;
1782: rpc_srv_t *srv = NULL;
1783: sockaddr_t sa = E_SOCKADDR_INIT;
1784: char szIface[64], szStr[STRSIZ];
1785: register int i;
1786: struct ifreq ifr;
1787: struct bpf_insn insns[] = {
1788: BPF_STMT(BPF_LD + BPF_H + BPF_ABS, 12),
1789: BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, RPC_DEFPORT, 0, 1),
1790: BPF_STMT(BPF_RET + BPF_K, -1),
1791: BPF_STMT(BPF_RET + BPF_K, 0),
1792: };
1793: struct bpf_program fcode = {
1794: .bf_len = sizeof(insns) / sizeof(struct bpf_insn),
1795: .bf_insns = insns
1796: };
1797:
1798: if (!concurentClients) {
1799: rpc_SetErr(EINVAL, "Invalid parameters can`t init RPC server");
1800: return NULL;
1801: }
1802: if (!csIface) {
1803: if (e_get1stiface(szIface, sizeof szIface))
1804: return NULL;
1805: } else
1806: strlcpy(szIface, csIface, sizeof szIface);
1807: if (!e_getifacebyname(szIface, &sa))
1808: return NULL;
1809:
1810: #ifdef HAVE_SRANDOMDEV
1811: srandomdev();
1812: #else
1813: time_t tim;
1814:
1815: srandom((time(&tim) ^ getpid()));
1816: #endif
1817:
1818: srv = e_malloc(sizeof(rpc_srv_t));
1819: if (!srv) {
1820: LOGERR;
1821: return NULL;
1822: } else
1823: memset(srv, 0, sizeof(rpc_srv_t));
1824:
1825: srv->srv_proto = SOCK_BPF;
1826: srv->srv_netbuf = netBuf;
1827: srv->srv_session.sess_version = RPC_VERSION;
1828: srv->srv_session.sess_instance = InstID;
1829:
1830: srv->srv_server.cli_parent = srv;
1831: memcpy(&srv->srv_server.cli_sa, &sa, sizeof srv->srv_server.cli_sa);
1832:
1833: /* init functions */
1834: pthread_mutex_init(&srv->srv_funcs.mtx, NULL);
1835: SLIST_INIT(&srv->srv_funcs);
1836: AVL_INIT(&srv->srv_funcs);
1837:
1838: /* init scheduler */
1839: srv->srv_root = schedBegin();
1840: if (!srv->srv_root) {
1841: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1842: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1843: e_free(srv);
1844: return NULL;
1.30.2.3 misho 1845: } else
1846: schedSignalDispatch(srv->srv_root, 42);
1.24 misho 1847:
1848: /* init pool for clients */
1849: srv->srv_clients = array_Init(concurentClients);
1850: if (!srv->srv_clients) {
1851: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1852: schedEnd(&srv->srv_root);
1853: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1854: e_free(srv);
1855: return NULL;
1856: }
1857:
1858: /* create server handler */
1859: for (i = 0; i < 10; i++) {
1860: memset(szStr, 0, sizeof szStr);
1861: snprintf(szStr, sizeof szStr, "/dev/bpf%d", i);
1862: srv->srv_server.cli_sock = open(szStr, O_RDWR);
1863: if (srv->srv_server.cli_sock > STDERR_FILENO)
1864: break;
1865: }
1866: if (srv->srv_server.cli_sock < 3) {
1867: LOGERR;
1868: array_Destroy(&srv->srv_clients);
1869: schedEnd(&srv->srv_root);
1870: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1871: e_free(srv);
1872: return NULL;
1873: }
1874:
1875: if (ioctl(srv->srv_server.cli_sock, BIOCIMMEDIATE, &n) == -1) {
1876: LOGERR;
1877: goto err;
1878: }
1879: if (ioctl(srv->srv_server.cli_sock, BIOCSETF, &fcode) == -1) {
1880: LOGERR;
1881: goto err;
1882: }
1883: n = (netBuf < RPC_MIN_BUFSIZ) ? getpagesize() : E_ALIGN(netBuf, 2);
1884: if (ioctl(srv->srv_server.cli_sock, BIOCSBLEN, &n) == -1) {
1885: LOGERR;
1886: goto err;
1887: } else
1888: srv->srv_netbuf = n;
1889:
1890: memset(&ifr, 0, sizeof ifr);
1891: strlcpy(ifr.ifr_name, szIface, sizeof ifr.ifr_name);
1892: if (ioctl(srv->srv_server.cli_sock, BIOCSETIF, &ifr) == -1) {
1893: LOGERR;
1894: goto err;
1895: } else
1896: fcntl(srv->srv_server.cli_sock, F_SETFL,
1897: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
1898:
1899: rpc_register_srvPing(srv);
1900:
1901: return srv;
1902: err: /* error condition */
1903: close(srv->srv_server.cli_sock);
1904: array_Destroy(&srv->srv_clients);
1905: schedEnd(&srv->srv_root);
1906: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1907: e_free(srv);
1.29 misho 1908: #else
1909: rpc_SetErr(ENOTSUP, "Feature isn't supported on Linux!");
1910: #endif
1911:
1.24 misho 1912: return NULL;
1913: }
1.25 misho 1914:
1915: /*
1916: * rpc_srv_initServerExt() - Init & create pipe RPC Server
1917: *
1918: * @InstID = Instance for authentication & recognition
1919: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
1920: * @fd = File descriptor
1921: * return: NULL == error or !=NULL bind and created RPC server instance
1922: */
1923: rpc_srv_t *
1924: rpc_srv_initServerExt(u_char InstID, int netBuf, int fd)
1925: {
1926: rpc_srv_t *srv = NULL;
1927:
1928: #ifdef HAVE_SRANDOMDEV
1929: srandomdev();
1930: #else
1931: time_t tim;
1932:
1933: srandom((time(&tim) ^ getpid()));
1934: #endif
1935:
1936: srv = e_malloc(sizeof(rpc_srv_t));
1937: if (!srv) {
1938: LOGERR;
1939: return NULL;
1940: } else
1941: memset(srv, 0, sizeof(rpc_srv_t));
1942:
1943: srv->srv_proto = SOCK_EXT;
1944: srv->srv_netbuf = (netBuf < RPC_MIN_BUFSIZ) ?
1945: getpagesize() : E_ALIGN(netBuf, 2);
1946: srv->srv_session.sess_version = RPC_VERSION;
1947: srv->srv_session.sess_instance = InstID;
1948:
1949: srv->srv_server.cli_parent = srv;
1950: srv->srv_server.cli_sock = fd;
1951:
1952: /* init functions */
1953: pthread_mutex_init(&srv->srv_funcs.mtx, NULL);
1954: SLIST_INIT(&srv->srv_funcs);
1955: AVL_INIT(&srv->srv_funcs);
1956:
1957: /* init scheduler */
1958: srv->srv_root = schedBegin();
1959: if (!srv->srv_root) {
1960: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
1961: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1962: e_free(srv);
1963: return NULL;
1.30.2.3 misho 1964: } else
1965: schedSignalDispatch(srv->srv_root, 42);
1.25 misho 1966:
1967: /* init pool for clients */
1968: srv->srv_clients = array_Init(1);
1969: if (!srv->srv_clients) {
1970: rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1971: schedEnd(&srv->srv_root);
1972: pthread_mutex_destroy(&srv->srv_funcs.mtx);
1973: e_free(srv);
1974: return NULL;
1975: }
1976:
1977: fcntl(srv->srv_server.cli_sock, F_SETFL,
1978: fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
1979:
1980: rpc_register_srvPing(srv);
1981:
1982: return srv;
1983: }
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