Annotation of libaitrpc/src/srv.c, revision 1.8.2.3
1.1 misho 1: /*************************************************************************
2: * (C) 2010 AITNET ltd - Sofia/Bulgaria - <misho@aitbg.com>
3: * by Michael Pounov <misho@openbsd-bg.org>
4: *
5: * $Author: misho $
1.8.2.3 ! misho 6: * $Id: srv.c,v 1.8.2.2 2012/05/11 08:46:41 misho Exp $
1.1 misho 7: *
1.2 misho 8: **************************************************************************
9: The ELWIX and AITNET software is distributed under the following
10: terms:
11:
12: All of the documentation and software included in the ELWIX and AITNET
13: Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>
14:
1.7 misho 15: Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
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:
1.7 misho 49: static void *rxPacket(sched_task_t*);
50: static void *rxBLOB(sched_task_t*);
51:
52: static void *
53: txPacket(sched_task_t *task)
54: {
55: rpc_cli_t *c = TASK_ARG(task);
56: rpc_srv_t *s = c->cli_parent;
57: rpc_func_t *f = NULL;
58: u_char *buf = TASK_DATA(task);
59: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
60: int ret, wlen = sizeof(struct tagRPCCall);
61: array_t *arr = NULL;
62:
63: ioTRACE(RPC_TRACE_LEVEL);
64:
65: if (rpc->call_argc) {
66: f = rpc_srv_getCall(s, ntohs(rpc->call_tag), ntohl(rpc->call_hash));
67: if (!f) {
68: rpc->call_argc ^= rpc->call_argc;
69: rpc->call_rep.ret = RPC_ERROR(-1);
70: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
71: } else {
72: rpc->call_argc = htons(rpc_srv_getVars(f, &arr));
73: /* Go Encapsulate variables */
74: ret = io_vars2buffer(buf + wlen, TASK_DATLEN(task) - wlen, arr);
75: io_clrVars(f->func_vars);
76: if (ret == -1) {
77: rpc_SetErr(EBADRPC, "Prepare RPC packet failed");
78: rpc->call_argc ^= rpc->call_argc;
79: rpc->call_rep.ret = RPC_ERROR(-1);
80: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
81: } else
82: wlen += ret;
83: }
84: }
85:
1.8 misho 86: rpc->call_len = htons(wlen);
87:
1.7 misho 88: /* calculate CRC */
89: rpc->call_crc ^= rpc->call_crc;
1.8 misho 90: rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
1.7 misho 91:
92: /* send reply */
93: ret = send(TASK_FD(task), buf, wlen, 0);
94: if (ret == -1)
95: LOGERR;
96: else if (ret != wlen)
97: rpc_SetErr(EPROCUNAVAIL, "RPC reply, should be send %d bytes, "
98: "really sended %d bytes", wlen, ret);
99: else
100: ioDEBUG(RPC_DEBUG_LEVEL, "Sended %d bytes", ret);
101:
102: return NULL;
103: }
104:
105: static void *
106: execCall(sched_task_t *task)
107: {
108: rpc_cli_t *c = TASK_ARG(task);
109: rpc_srv_t *s = c->cli_parent;
110: rpc_func_t *f = NULL;
111: array_t *arr = NULL;
1.8 misho 112: u_char *buf = TASK_DATA(task) + TASK_VAL(task);
1.7 misho 113: struct tagRPCCall *rpc = (struct tagRPCCall*) buf;
114: int argc = ntohs(rpc->call_argc);
115:
116: ioTRACE(RPC_TRACE_LEVEL);
117:
118: /* Go decapsulate variables ... */
1.8 misho 119: if (argc) {
1.7 misho 120: arr = io_buffer2vars(buf + sizeof(struct tagRPCCall),
1.8 misho 121: TASK_DATLEN(task) - TASK_VAL(task) - sizeof(struct tagRPCCall),
122: argc, 1);
1.7 misho 123: if (!arr) {
124: rpc_SetErr(ERPCMISMATCH, "#%d - %s", io_GetErrno(), io_GetError());
125: rpc->call_argc ^= rpc->call_argc;
126: rpc->call_rep.ret = RPC_ERROR(-1);
127: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
128: return NULL;
129: }
130: }
131:
132: if (!(f = rpc_srv_getCall(s, ntohs(rpc->call_tag), ntohl(rpc->call_hash)))) {
133: rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server");
134: rpc->call_argc ^= rpc->call_argc;
135: rpc->call_rep.ret = RPC_ERROR(-1);
136: rpc->call_rep.eno = RPC_ERROR(rpc_Errno);
137: } else {
138: ioDEBUG(RPC_DEBUG_LEVEL, "RPC function %s from module %s",
139: AIT_GET_STR(&f->func_name), AIT_GET_LIKE(&f->func_file, char*));
140:
1.8 misho 141: /* if client doesn't want reply */
142: argc = rpc->call_req.flags & RPC_NOREPLY;
1.7 misho 143: rpc->call_rep.ret = RPC_ERROR(rpc_srv_execCall(f, rpc, arr));
144: if (rpc->call_rep.ret == htonl(-1)) {
145: rpc->call_rep.eno = RPC_ERROR(errno);
146: rpc->call_argc ^= rpc->call_argc;
147: } else {
148: rpc->call_rep.eno ^= rpc->call_rep.eno;
1.8 misho 149: if (argc) {
150: /* without reply */
151: io_clrVars(f->func_vars);
152: rpc->call_argc ^= rpc->call_argc;
153: } else
154: rpc->call_argc = htons(rpc_srv_getVars(f, NULL));
1.7 misho 155: }
156: }
157:
158: if (arr)
159: io_arrayDestroy(&arr);
160: return NULL;
161: }
162:
163: static void *
164: rxPacket(sched_task_t *task)
165: {
166: rpc_cli_t *c = TASK_ARG(task);
167: rpc_srv_t *s = c->cli_parent;
168: u_char *buf = TASK_DATA(task);
1.8 misho 169: int rlen, noreply;
170: u_short crc, off = 0;
1.7 misho 171: struct tagRPCCall *rpc;
172: struct timespec ts;
173:
174: ioTRACE(RPC_TRACE_LEVEL);
175:
176: memset(buf, 0, TASK_DATLEN(task));
177: rlen = recv(TASK_FD(task), buf, TASK_DATLEN(task), 0);
178: if (rlen == -1) {
179: LOGERR;
180: s->srv_kill = s->srv_blob.state = kill;
181: return NULL;
182: } else if (!rlen) { /* receive EOF */
183: s->srv_kill = s->srv_blob.state = kill;
184: return NULL;
185: } else
186: ioDEBUG(RPC_DEBUG_LEVEL, "Readed %d bytes", rlen);
187:
1.8 misho 188: do {
189: if (rlen < sizeof(struct tagRPCCall)) {
190: rpc_SetErr(ERPCMISMATCH, "Too short RPC packet");
191:
192: schedRead(TASK_ROOT(task), rxPacket, TASK_ARG(task), TASK_FD(task),
193: TASK_DATA(task), TASK_DATLEN(task));
194: return NULL;
195: } else
196: rpc = (struct tagRPCCall*) (buf + off);
197:
198: rlen -= ntohs(rpc->call_len);
199:
200: /* check integrity of packet */
201: crc = ntohs(rpc->call_crc);
202: rpc->call_crc ^= rpc->call_crc;
203: if (crc != crcFletcher16((u_short*) (buf + off), ntohs(rpc->call_len) / 2)) {
204: rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet");
1.7 misho 205:
1.8 misho 206: off += ntohs(rpc->call_len);
207: if (rlen < 1)
208: break;
209: else
210: continue;
211: }
1.7 misho 212:
1.8 misho 213: noreply = rpc->call_req.flags & RPC_NOREPLY;
1.7 misho 214:
1.8 misho 215: /* check RPC packet session info */
216: if (rpc_chkPktSession(&rpc->call_session, &s->srv_session)) {
217: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
218: rpc->call_argc ^= rpc->call_argc;
219: rpc->call_rep.ret = RPC_ERROR(-1);
220: rpc->call_rep.eno = RPC_ERROR(errno);
221: } else {
222: /* change socket timeout from last packet */
223: ts.tv_sec = rpc->call_session.sess_timeout;
224: ts.tv_nsec = 0;
225: schedPolling(TASK_ROOT(task), &ts, NULL);
226:
227: /* execute RPC call */
228: schedEvent(TASK_ROOT(task), execCall, TASK_ARG(task), off,
229: TASK_DATA(task), TASK_DATLEN(task));
230: }
1.7 misho 231:
1.8 misho 232: /* send RPC reply */
233: if (!noreply)
234: schedWrite(TASK_ROOT(task), txPacket, TASK_ARG(task), TASK_FD(task),
235: buf + off, TASK_DATLEN(task) - off);
1.7 misho 236:
1.8 misho 237: off += ntohs(rpc->call_len);
238: } while (rlen > 0);
1.7 misho 239:
240: /* lets get next packet */
241: schedRead(TASK_ROOT(task), rxPacket, TASK_ARG(task), TASK_FD(task),
242: TASK_DATA(task), TASK_DATLEN(task));
243: return NULL;
244: }
245:
1.1 misho 246: static void *
247: rpc_srv_dispatchCall(void *arg)
248: {
249: rpc_cli_t *c = arg;
250: rpc_srv_t *s;
1.5 misho 251: u_char *buf;
1.7 misho 252: sched_root_task_t *root;
253: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
254:
255: ioTRACE(RPC_TRACE_LEVEL);
1.1 misho 256:
257: if (!arg) {
1.7 misho 258: rpc_SetErr(EINVAL, "Invalid parameter can`t procced RPC client");
1.1 misho 259: return NULL;
260: } else
261: s = c->cli_parent;
262:
1.7 misho 263: /* allocate net buffer */
1.5 misho 264: buf = malloc(s->srv_netbuf);
265: if (!buf) {
266: LOGERR;
267: return NULL;
268: }
269:
1.7 misho 270: root = schedBegin();
271: if (!root) {
272: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
273: free(buf);
274: return NULL;
275: } else {
276: schedTermCondition(root, kill);
277: schedPolling(root, &ts, NULL);
278: }
279:
280: schedRead(root, rxPacket, c, c->cli_sock, buf, s->srv_netbuf);
281:
282: schedRun(root, (void*) &s->srv_kill);
283: schedEnd(&root);
284:
285: shutdown(c->cli_sock, SHUT_RDWR);
286: close(c->cli_sock);
287: memset(c, 0, sizeof(rpc_cli_t));
288: free(buf);
289: return NULL;
290: }
291:
292:
293: static void *
294: txBLOB(sched_task_t *task)
295: {
296: u_char *buf = TASK_DATA(task);
297: struct tagBLOBHdr *blob = (struct tagBLOBHdr *) buf;
298: int wlen = sizeof(struct tagBLOBHdr);
299:
300: ioTRACE(RPC_TRACE_LEVEL);
301:
302: /* calculate CRC */
303: blob->hdr_crc ^= blob->hdr_crc;
1.8 misho 304: blob->hdr_crc = htons(crcFletcher16((u_short*) buf, wlen / 2));
1.7 misho 305:
306: /* send reply */
307: wlen = send(TASK_FD(task), buf, wlen, 0);
308: if (wlen == -1)
309: LOGERR;
310: else if (wlen != sizeof(struct tagBLOBHdr))
311: rpc_SetErr(EPROCUNAVAIL, "RPC reply, should be send %d bytes, "
312: "really sended %d bytes", sizeof(struct tagBLOBHdr), wlen);
313: else
314: ioDEBUG(RPC_DEBUG_LEVEL, "Sended %d bytes", wlen);
315:
316: return NULL;
317: }
1.4 misho 318:
1.7 misho 319: static void *
320: rxBLOB(sched_task_t *task)
321: {
322: rpc_cli_t *c = TASK_ARG(task);
323: rpc_srv_t *s = c->cli_parent;
324: rpc_blob_t *b;
325: u_char *buf = TASK_DATA(task);
326: struct tagBLOBHdr *blob = (struct tagBLOBHdr *) buf;
327: int rlen;
328: u_short crc;
329: struct timespec ts;
330:
331: ioTRACE(RPC_TRACE_LEVEL);
332:
333: /* check for disable service at this moment? */
1.8 misho 334: if (!s || s->srv_blob.state == disable) {
1.7 misho 335: usleep(100000);
336: #ifdef HAVE_PTHREAD_YIELD
337: pthread_yield();
338: #endif
339: schedRead(TASK_ROOT(task), rxBLOB, TASK_ARG(task), TASK_FD(task),
340: TASK_DATA(task), TASK_DATLEN(task));
341: return NULL;
342: }
1.5 misho 343:
1.7 misho 344: memset(buf, 0, TASK_DATLEN(task));
345: rlen = recv(TASK_FD(task), buf, TASK_DATLEN(task), 0);
346: if (rlen == -1) {
347: LOGERR;
348: s->srv_blob.state = kill;
349: return NULL;
350: } else if (!rlen || s->srv_kill == kill) { /* receive EOF */
351: s->srv_blob.state = kill;
352: return NULL;
353: } else
354: ioDEBUG(RPC_DEBUG_LEVEL, "Readed %d bytes", rlen);
1.6 misho 355:
1.7 misho 356: if (rlen < sizeof(struct tagBLOBHdr)) {
357: rpc_SetErr(ERPCMISMATCH, "Too short BLOB packet");
358: schedRead(TASK_ROOT(task), rxBLOB, TASK_ARG(task), TASK_FD(task),
359: TASK_DATA(task), TASK_DATLEN(task));
360: return NULL;
361: }
1.1 misho 362:
1.7 misho 363: /* check integrity of packet */
364: crc = ntohs(blob->hdr_crc);
365: blob->hdr_crc ^= blob->hdr_crc;
1.8 misho 366: if (crc != crcFletcher16((u_short*) buf, rlen / 2)) {
1.7 misho 367: rpc_SetErr(ERPCMISMATCH, "Bad CRC BLOB packet");
368: schedRead(TASK_ROOT(task), rxBLOB, TASK_ARG(task), TASK_FD(task),
369: TASK_DATA(task), TASK_DATLEN(task));
370: return NULL;
371: }
1.5 misho 372:
1.7 misho 373: /* check RPC packet session info */
374: if ((crc = rpc_chkPktSession(&blob->hdr_session, &s->srv_session))) {
375: rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session");
376: blob->hdr_cmd = error;
377: goto end;
378: } else {
379: /* change socket timeout from last packet */
380: ts.tv_sec = blob->hdr_session.sess_timeout;
381: ts.tv_nsec = 0;
382: schedPolling(TASK_ROOT(task), &ts, NULL);
383: }
384:
385: /* Go to proceed packet ... */
386: switch (blob->hdr_cmd) {
387: case get:
388: if (!(b = rpc_srv_getBLOB(s, ntohl(blob->hdr_var)))) {
389: rpc_SetErr(EINVAL, "Var=%x not found", ntohl(blob->hdr_var));
390: blob->hdr_cmd = no;
391: blob->hdr_ret = RPC_ERROR(-1);
392: break;
393: } else
394: blob->hdr_len = htonl(b->blob_len);
1.5 misho 395:
1.7 misho 396: if (rpc_srv_blobMap(s, b) != -1) {
397: /* deliver BLOB variable to client */
398: blob->hdr_ret = htonl(rpc_srv_sendBLOB(c, b));
399: rpc_srv_blobUnmap(b);
400: } else {
401: blob->hdr_cmd = error;
402: blob->hdr_ret = RPC_ERROR(-1);
403: }
404: break;
405: case set:
406: if ((b = rpc_srv_registerBLOB(s, ntohl(blob->hdr_len)))) {
407: /* set new BLOB variable for reply :) */
408: blob->hdr_var = htonl(b->blob_var);
409:
410: /* receive BLOB from client */
411: blob->hdr_ret = htonl(rpc_srv_recvBLOB(c, b));
412: rpc_srv_blobUnmap(b);
1.5 misho 413: } else {
1.7 misho 414: blob->hdr_cmd = error;
415: blob->hdr_ret = RPC_ERROR(-1);
416: }
417: break;
418: case unset:
419: if (rpc_srv_unregisterBLOB(s, blob->hdr_var) == -1) {
420: blob->hdr_cmd = error;
421: blob->hdr_ret = RPC_ERROR(-1);
1.1 misho 422: }
423: break;
1.7 misho 424: default:
425: rpc_SetErr(EPROCUNAVAIL, "Unsupported BLOB command %d", blob->hdr_cmd);
426: blob->hdr_cmd = error;
427: blob->hdr_ret = RPC_ERROR(-1);
428: }
1.1 misho 429:
1.7 misho 430: end:
431: schedWrite(TASK_ROOT(task), txBLOB, TASK_ARG(task), TASK_FD(task),
432: TASK_DATA(task), TASK_DATLEN(task));
433: schedRead(TASK_ROOT(task), rxBLOB, TASK_ARG(task), TASK_FD(task),
434: TASK_DATA(task), TASK_DATLEN(task));
435: return NULL;
1.2 misho 436: }
437:
438: static void *
439: rpc_srv_dispatchVars(void *arg)
440: {
441: rpc_cli_t *c = arg;
442: rpc_srv_t *s;
1.7 misho 443: sched_root_task_t *root;
444: u_char *buf;
445: struct timespec ts = { DEF_RPC_TIMEOUT, 0 };
446:
447: ioTRACE(RPC_TRACE_LEVEL);
1.2 misho 448:
449: if (!arg) {
1.7 misho 450: rpc_SetErr(EINVAL, "Invalid parameter can`t procced BLOB");
1.2 misho 451: return NULL;
452: } else
453: s = c->cli_parent;
454:
1.7 misho 455: /* allocate net buffer */
456: buf = malloc(sizeof(struct tagBLOBHdr));
457: if (!buf) {
458: LOGERR;
459: return NULL;
460: }
1.2 misho 461:
1.7 misho 462: root = schedBegin();
463: if (!root) {
464: rpc_SetErr(sched_GetErrno(), "%s", sched_GetError());
465: free(buf);
466: return NULL;
467: } else {
468: schedTermCondition(root, kill);
469: schedPolling(root, &ts, NULL);
470: }
1.4 misho 471:
1.7 misho 472: schedRead(root, rxBLOB, c, c->cli_sock, buf, sizeof(struct tagBLOBHdr));
1.2 misho 473:
1.7 misho 474: schedRun(root, (void*) &s->srv_blob.state);
475: schedEnd(&root);
1.2 misho 476:
477: shutdown(c->cli_sock, SHUT_RDWR);
478: close(c->cli_sock);
479: memset(c, 0, sizeof(rpc_cli_t));
1.7 misho 480: free(buf);
481: return NULL;
1.1 misho 482: }
483:
484: // -------------------------------------------------
485:
486: /*
1.7 misho 487: * rpc_srv_initBLOBServer() - Init & create BLOB Server
488: *
1.4 misho 489: * @srv = RPC server instance
1.2 misho 490: * @Port = Port for bind server, if Port == 0 default port is selected
491: * @diskDir = Disk place for BLOB file objects
492: * return: -1 == error or 0 bind and created BLOB server instance
493: */
494: int
495: rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, u_short Port, const char *diskDir)
496: {
497: int n = 1;
1.6 misho 498: io_sockaddr_t sa;
1.2 misho 499:
1.7 misho 500: ioTRACE(RPC_TRACE_LEVEL);
501:
1.2 misho 502: if (!srv) {
1.7 misho 503: rpc_SetErr(EINVAL, "Invalid parameters can`t init BLOB server");
1.2 misho 504: return -1;
505: }
506: if (srv->srv_blob.state) {
1.7 misho 507: rpc_SetErr(EPERM, "Already started BLOB server!");
1.2 misho 508: return 0;
509: }
510:
511: memset(&srv->srv_blob, 0, sizeof srv->srv_blob);
512: if (access(diskDir, R_OK | W_OK) == -1) {
513: LOGERR;
514: return -1;
515: } else
1.7 misho 516: AIT_SET_STR(&srv->srv_blob.dir, diskDir);
1.2 misho 517:
518: srv->srv_blob.server.cli_tid = pthread_self();
519: srv->srv_blob.server.cli_parent = srv;
1.4 misho 520:
521: memcpy(&sa, &srv->srv_server.cli_sa, sizeof sa);
1.6 misho 522: switch (sa.sa.sa_family) {
1.4 misho 523: case AF_INET:
1.6 misho 524: sa.sin.sin_port = htons(Port ? Port : ntohs(sa.sin.sin_port) + 1);
1.4 misho 525: break;
526: case AF_INET6:
1.6 misho 527: sa.sin6.sin6_port = htons(Port ? Port : ntohs(sa.sin6.sin6_port) + 1);
1.4 misho 528: break;
529: case AF_LOCAL:
1.6 misho 530: strlcat(sa.sun.sun_path, ".blob", sizeof sa.sun.sun_path);
1.4 misho 531: break;
532: default:
1.7 misho 533: AIT_FREE_VAL(&srv->srv_blob.dir);
1.4 misho 534: return -1;
1.2 misho 535: }
1.6 misho 536: memcpy(&srv->srv_blob.server.cli_sa, &sa, sizeof sa);
1.2 misho 537:
1.4 misho 538: /* create BLOB server socket */
1.6 misho 539: srv->srv_blob.server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, SOCK_STREAM, 0);
1.2 misho 540: if (srv->srv_blob.server.cli_sock == -1) {
541: LOGERR;
1.7 misho 542: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 543: return -1;
544: }
545: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
546: LOGERR;
547: close(srv->srv_blob.server.cli_sock);
1.7 misho 548: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 549: return -1;
550: }
1.5 misho 551: n = srv->srv_netbuf;
552: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
553: LOGERR;
554: close(srv->srv_blob.server.cli_sock);
1.7 misho 555: AIT_FREE_VAL(&srv->srv_blob.dir);
1.5 misho 556: return -1;
557: }
558: if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
559: LOGERR;
560: close(srv->srv_blob.server.cli_sock);
1.7 misho 561: AIT_FREE_VAL(&srv->srv_blob.dir);
1.5 misho 562: return -1;
563: }
1.6 misho 564: if (bind(srv->srv_blob.server.cli_sock, &srv->srv_blob.server.cli_sa.sa,
565: srv->srv_blob.server.cli_sa.sa.sa_len) == -1) {
1.2 misho 566: LOGERR;
567: close(srv->srv_blob.server.cli_sock);
1.7 misho 568: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 569: return -1;
570: }
571:
1.4 misho 572: /* allocate pool for concurent clients */
1.2 misho 573: srv->srv_blob.clients = calloc(srv->srv_numcli, sizeof(rpc_cli_t));
574: if (!srv->srv_blob.clients) {
575: LOGERR;
576: close(srv->srv_blob.server.cli_sock);
1.7 misho 577: AIT_FREE_VAL(&srv->srv_blob.dir);
1.2 misho 578: return -1;
579: } else
580: memset(srv->srv_blob.clients, 0, srv->srv_numcli * sizeof(rpc_cli_t));
581:
582: rpc_srv_registerCall(srv, NULL, CALL_BLOBSHUTDOWN, 0);
1.5 misho 583: rpc_srv_registerCall(srv, NULL, CALL_BLOBCLIENTS, 1);
584: rpc_srv_registerCall(srv, NULL, CALL_BLOBVARS, 1);
585: rpc_srv_registerCall(srv, NULL, CALL_BLOBSTATE, 0);
1.2 misho 586:
1.4 misho 587: srv->srv_blob.state = enable; /* enable BLOB */
1.2 misho 588: return 0;
589: }
590:
591: /*
1.7 misho 592: * rpc_srv_endBLOBServer() - Destroy BLOB server, close all opened sockets and free resources
593: *
1.2 misho 594: * @srv = RPC Server instance
595: * return: none
596: */
597: void
598: rpc_srv_endBLOBServer(rpc_srv_t * __restrict srv)
599: {
600: rpc_cli_t *c;
601: register int i;
602: rpc_blob_t *f;
603:
1.7 misho 604: ioTRACE(RPC_TRACE_LEVEL);
605:
1.8 misho 606: if (!srv || srv->srv_blob.state == disable)
1.2 misho 607: return;
1.8 misho 608: else
1.4 misho 609: srv->srv_blob.state = kill;
1.2 misho 610:
611: rpc_srv_unregisterCall(srv, NULL, CALL_BLOBSHUTDOWN);
612: rpc_srv_unregisterCall(srv, NULL, CALL_BLOBCLIENTS);
613: rpc_srv_unregisterCall(srv, NULL, CALL_BLOBVARS);
614: rpc_srv_unregisterCall(srv, NULL, CALL_BLOBSTATE);
615:
1.4 misho 616: /* close all clients connections & server socket */
1.2 misho 617: for (i = 0, c = srv->srv_blob.clients; i < srv->srv_numcli && c; i++, c++)
1.6 misho 618: if (c->cli_sa.sa.sa_family)
1.2 misho 619: shutdown(c->cli_sock, SHUT_RDWR);
620: close(srv->srv_blob.server.cli_sock);
621:
622: if (srv->srv_blob.clients) {
623: free(srv->srv_blob.clients);
624: srv->srv_blob.clients = NULL;
625: }
626:
1.4 misho 627: /* detach blobs */
1.2 misho 628: while ((f = srv->srv_blob.blobs)) {
629: srv->srv_blob.blobs = f->blob_next;
630: rpc_srv_blobFree(srv, f);
631: free(f);
632: }
633:
1.7 misho 634: AIT_FREE_VAL(&srv->srv_blob.dir);
635:
1.8 misho 636: /* at final, save disable BLOB service state */
637: srv->srv_blob.state = disable;
1.2 misho 638: }
639:
640: /*
1.7 misho 641: * rpc_srv_loopBLOB() - Execute Main BLOB server loop and wait for clients requests
642: *
1.2 misho 643: * @srv = RPC Server instance
644: * return: -1 error or 0 ok, infinite loop ...
645: */
646: int
1.5 misho 647: rpc_srv_loopBLOB(rpc_srv_t * __restrict srv)
1.2 misho 648: {
1.6 misho 649: socklen_t salen = sizeof(io_sockaddr_t);
1.2 misho 650: register int i;
651: rpc_cli_t *c;
652: int ret;
1.7 misho 653: pthread_attr_t attr;
1.8.2.2 misho 654: struct pollfd pfd;
1.7 misho 655:
656: ioTRACE(RPC_TRACE_LEVEL);
1.2 misho 657:
1.4 misho 658: if (!srv || srv->srv_blob.state == kill) {
1.7 misho 659: rpc_SetErr(EINVAL, "Invalid parameter can`t start BLOB server");
1.2 misho 660: return -1;
661: }
662:
663: if (listen(srv->srv_blob.server.cli_sock, SOMAXCONN) == -1) {
664: LOGERR;
665: return -1;
1.8.2.2 misho 666: } else
667: fcntl(srv->srv_server.cli_sock, F_SETFL, fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
1.2 misho 668:
1.7 misho 669: pthread_attr_init(&attr);
670: pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
671:
1.8.2.2 misho 672: pfd.fd = srv->srv_server.cli_sock;
673: pfd.events = POLLIN | POLLPRI;
1.7 misho 674: /* main BLOB loop */
1.4 misho 675: while (srv->srv_blob.state != kill && srv->srv_kill != kill) {
1.2 misho 676: for (c = srv->srv_blob.clients, i = 0; i < srv->srv_numcli && c; i++, c++)
1.6 misho 677: if (!c->cli_sa.sa.sa_family)
1.2 misho 678: break;
679: if (i >= srv->srv_numcli) {
1.5 misho 680: #ifdef HAVE_PTHREAD_YIELD
681: pthread_yield();
682: #else
1.2 misho 683: usleep(1000000);
1.5 misho 684: #endif
1.2 misho 685: continue;
686: }
687:
1.8.2.2 misho 688: if ((ret = poll(&pfd, 1, srv->srv_session.sess_timeout * 1000)) == -1 ||
689: pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
1.2 misho 690: LOGERR;
691: ret = 1;
692: break;
1.8.2.2 misho 693: } else if (!ret)
1.2 misho 694: continue;
695:
1.6 misho 696: c->cli_sock = accept(srv->srv_blob.server.cli_sock, &c->cli_sa.sa, &salen);
1.2 misho 697: if (c->cli_sock == -1) {
698: LOGERR;
699: continue;
700: } else
701: c->cli_parent = srv;
702:
1.7 misho 703: /* spawn dispatch thread for BLOB client */
704: if (pthread_create(&c->cli_tid, &attr, rpc_srv_dispatchVars, c)) {
1.2 misho 705: LOGERR;
706: continue;
1.7 misho 707: }
1.2 misho 708: }
709:
1.5 misho 710: srv->srv_blob.state = kill;
1.2 misho 711:
1.7 misho 712: pthread_attr_destroy(&attr);
1.2 misho 713: return 0;
714: }
715:
716:
717: /*
1.7 misho 718: * rpc_srv_initServer() - Init & create RPC Server
719: *
1.1 misho 720: * @regProgID = ProgramID for authentication & recognition
721: * @regProcID = ProcessID for authentication & recognition
722: * @concurentClients = Concurent clients at same time to this server
1.5 misho 723: * @netBuf = Network buffer length, if =0 == BUFSIZ (also meaning max RPC packet)
1.4 misho 724: * @family = Family type, AF_INET, AF_INET6 or AF_LOCAL
725: * @csHost = Host name or address for bind server, if NULL any address
1.1 misho 726: * @Port = Port for bind server, if Port == 0 default port is selected
727: * return: NULL == error or !=NULL bind and created RPC server instance
728: */
729: rpc_srv_t *
730: rpc_srv_initServer(u_int regProgID, u_int regProcID, int concurentClients,
1.5 misho 731: int netBuf, u_short family, const char *csHost, u_short Port)
1.1 misho 732: {
733: rpc_srv_t *srv = NULL;
734: int n = 1;
735: struct hostent *host = NULL;
1.6 misho 736: io_sockaddr_t sa;
1.1 misho 737:
1.7 misho 738: ioTRACE(RPC_TRACE_LEVEL);
739:
1.4 misho 740: if (!concurentClients || !regProgID ||
741: (family != AF_INET && family != AF_INET6 && family != AF_LOCAL)) {
1.1 misho 742: rpc_SetErr(EINVAL, "Error:: Invalid parameters can`t init RPC server ...\n");
743: return NULL;
744: }
745: if (!Port)
746: Port = RPC_DEFPORT;
1.5 misho 747: if (!netBuf)
748: netBuf = BUFSIZ;
1.7 misho 749: else
750: netBuf = io_align(netBuf, 1); /* align netBuf length */
1.4 misho 751: if (csHost && family != AF_LOCAL) {
1.1 misho 752: host = gethostbyname2(csHost, family);
753: if (!host) {
754: rpc_SetErr(h_errno, "Error:: %s\n", hstrerror(h_errno));
755: return NULL;
756: }
757: }
1.4 misho 758: memset(&sa, 0, sizeof sa);
1.6 misho 759: sa.sa.sa_family = family;
1.1 misho 760: switch (family) {
761: case AF_INET:
1.6 misho 762: sa.sin.sin_len = sizeof(struct sockaddr_in);
763: sa.sin.sin_port = htons(Port);
1.1 misho 764: if (csHost)
1.6 misho 765: memcpy(&sa.sin.sin_addr, host->h_addr, host->h_length);
1.1 misho 766: break;
767: case AF_INET6:
1.6 misho 768: sa.sin6.sin6_len = sizeof(struct sockaddr_in6);
769: sa.sin6.sin6_port = htons(Port);
1.4 misho 770: if (csHost)
1.6 misho 771: memcpy(&sa.sin6.sin6_addr, host->h_addr, host->h_length);
1.4 misho 772: break;
773: case AF_LOCAL:
1.6 misho 774: sa.sun.sun_len = sizeof(struct sockaddr_un);
1.1 misho 775: if (csHost)
1.6 misho 776: strlcpy(sa.sun.sun_path, csHost, sizeof sa.sun.sun_path);
777: unlink(sa.sun.sun_path);
1.1 misho 778: break;
779: default:
780: rpc_SetErr(EINVAL, "Error:: Invalid parameters can`t start RPC server ...\n");
781: return NULL;
782: }
783:
784: srv = malloc(sizeof(rpc_srv_t));
785: if (!srv) {
786: LOGERR;
787: return NULL;
788: } else
789: memset(srv, 0, sizeof(rpc_srv_t));
790:
1.5 misho 791: srv->srv_netbuf = netBuf;
1.1 misho 792: srv->srv_numcli = concurentClients;
793: srv->srv_session.sess_version = RPC_VERSION;
1.7 misho 794: srv->srv_session.sess_timeout = DEF_RPC_TIMEOUT;
1.1 misho 795: srv->srv_session.sess_program = regProgID;
796: srv->srv_session.sess_process = regProcID;
797:
1.2 misho 798: srv->srv_server.cli_tid = pthread_self();
1.1 misho 799: srv->srv_server.cli_parent = srv;
1.6 misho 800: memcpy(&srv->srv_server.cli_sa, &sa, sizeof sa);
1.4 misho 801:
802: /* create server socket */
1.1 misho 803: srv->srv_server.cli_sock = socket(family, SOCK_STREAM, 0);
804: if (srv->srv_server.cli_sock == -1) {
805: LOGERR;
806: free(srv);
807: return NULL;
808: }
809: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
810: LOGERR;
811: close(srv->srv_server.cli_sock);
812: free(srv);
813: return NULL;
814: }
1.5 misho 815: n = srv->srv_netbuf;
816: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) {
817: LOGERR;
818: close(srv->srv_server.cli_sock);
819: free(srv);
820: return NULL;
821: }
822: if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) {
823: LOGERR;
824: close(srv->srv_server.cli_sock);
825: free(srv);
826: return NULL;
827: }
1.6 misho 828: if (bind(srv->srv_server.cli_sock, &srv->srv_server.cli_sa.sa,
829: srv->srv_server.cli_sa.sa.sa_len) == -1) {
1.1 misho 830: LOGERR;
831: close(srv->srv_server.cli_sock);
832: free(srv);
833: return NULL;
834: }
835:
1.4 misho 836: /* allocate pool for concurent clients */
1.1 misho 837: srv->srv_clients = calloc(srv->srv_numcli, sizeof(rpc_cli_t));
838: if (!srv->srv_clients) {
839: LOGERR;
840: close(srv->srv_server.cli_sock);
841: free(srv);
842: return NULL;
843: } else
844: memset(srv->srv_clients, 0, srv->srv_numcli * sizeof(rpc_cli_t));
845:
1.2 misho 846: rpc_srv_registerCall(srv, NULL, CALL_SRVSHUTDOWN, 0);
1.5 misho 847: rpc_srv_registerCall(srv, NULL, CALL_SRVCLIENTS, 1);
848: rpc_srv_registerCall(srv, NULL, CALL_SRVSESSIONS, 4);
849: rpc_srv_registerCall(srv, NULL, CALL_SRVCALLS, 1);
1.8 misho 850:
1.1 misho 851: return srv;
852: }
853:
854: /*
1.7 misho 855: * rpc_srv_endServer() - Destroy RPC server, close all opened sockets and free resources
856: *
1.6 misho 857: * @psrv = RPC Server instance
1.1 misho 858: * return: none
859: */
860: void
1.6 misho 861: rpc_srv_endServer(rpc_srv_t ** __restrict psrv)
1.1 misho 862: {
863: rpc_cli_t *c;
864: register int i;
865: rpc_func_t *f;
866:
1.7 misho 867: ioTRACE(RPC_TRACE_LEVEL);
868:
1.6 misho 869: if (!psrv || !*psrv) {
1.1 misho 870: rpc_SetErr(EINVAL, "Error:: Can`t destroy server because parameter is null!\n");
871: return;
872: }
873:
1.6 misho 874: rpc_srv_endBLOBServer(*psrv);
1.1 misho 875:
1.4 misho 876: /* close all clients connections & server socket */
1.6 misho 877: for (i = 0, c = (*psrv)->srv_clients; i < (*psrv)->srv_numcli && c; i++, c++)
878: if (c->cli_sa.sa.sa_family) {
1.1 misho 879: shutdown(c->cli_sock, SHUT_RDWR);
1.2 misho 880: close(c->cli_sock);
881: }
1.6 misho 882: close((*psrv)->srv_server.cli_sock);
1.1 misho 883:
1.6 misho 884: if ((*psrv)->srv_clients) {
885: free((*psrv)->srv_clients);
886: (*psrv)->srv_clients = NULL;
887: (*psrv)->srv_numcli = 0;
1.1 misho 888: }
889:
1.4 misho 890: /* detach exported calls */
1.6 misho 891: while ((f = (*psrv)->srv_funcs)) {
892: (*psrv)->srv_funcs = f->func_next;
893: io_freeVars(&f->func_vars);
1.7 misho 894: AIT_FREE_VAL(&f->func_name);
895: AIT_FREE_VAL(&f->func_file);
1.2 misho 896: free(f);
897: }
898:
1.6 misho 899: free(*psrv);
900: *psrv = NULL;
1.1 misho 901: }
902:
903: /*
1.7 misho 904: * rpc_srv_loopServer() - Execute Main server loop and wait for clients requests
905: *
1.1 misho 906: * @srv = RPC Server instance
907: * return: -1 error or 0 ok, infinite loop ...
908: */
909: int
1.5 misho 910: rpc_srv_loopServer(rpc_srv_t * __restrict srv)
1.1 misho 911: {
1.6 misho 912: socklen_t salen = sizeof(io_sockaddr_t);
1.1 misho 913: register int i;
914: rpc_cli_t *c;
1.2 misho 915: int ret;
1.7 misho 916: pthread_attr_t attr;
1.8.2.2 misho 917: struct pollfd pfd;
1.7 misho 918:
919: ioTRACE(RPC_TRACE_LEVEL);
1.1 misho 920:
921: if (!srv) {
922: rpc_SetErr(EINVAL, "Error:: Invalid parameter can`t start RPC server ...\n");
923: return -1;
924: }
925:
1.5 misho 926: /* activate BLOB server worker if srv->srv_blob.state == enable */
927: rpc_srv_execBLOBServer(srv);
928:
1.1 misho 929: if (listen(srv->srv_server.cli_sock, SOMAXCONN) == -1) {
930: LOGERR;
931: return -1;
1.8.2.2 misho 932: } else
933: fcntl(srv->srv_server.cli_sock, F_SETFL, fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK);
1.1 misho 934:
1.7 misho 935: pthread_attr_init(&attr);
936: pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
937:
1.8.2.2 misho 938: pfd.fd = srv->srv_server.cli_sock;
939: pfd.events = POLLIN | POLLPRI;
1.7 misho 940: /* main rpc loop */
1.4 misho 941: while (srv->srv_kill != kill) {
1.1 misho 942: for (c = srv->srv_clients, i = 0; i < srv->srv_numcli && c; i++, c++)
1.6 misho 943: if (!c->cli_sa.sa.sa_family)
1.1 misho 944: break;
1.2 misho 945: if (i >= srv->srv_numcli) {
1.5 misho 946: #ifdef HAVE_PTHREAD_YIELD
947: pthread_yield();
948: #else
1.1 misho 949: usleep(1000000);
1.5 misho 950: #endif
1.1 misho 951: continue;
952: }
1.2 misho 953:
1.8.2.2 misho 954: if ((ret = poll(&pfd, 1, srv->srv_session.sess_timeout * 1000)) == -1 ||
955: pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
1.2 misho 956: LOGERR;
957: ret = 1;
958: break;
1.8.2.2 misho 959: } else if (!ret)
1.2 misho 960: continue;
961:
1.6 misho 962: c->cli_sock = accept(srv->srv_server.cli_sock, &c->cli_sa.sa, &salen);
1.1 misho 963: if (c->cli_sock == -1) {
964: LOGERR;
965: continue;
966: } else
967: c->cli_parent = srv;
968:
1.7 misho 969: /* spawn rpc client dispatcher */
970: if (pthread_create(&c->cli_tid, &attr, rpc_srv_dispatchCall, c)) {
1.1 misho 971: LOGERR;
972: continue;
1.7 misho 973: }
1.1 misho 974: }
975:
1.7 misho 976: pthread_attr_destroy(&attr);
1.1 misho 977: return 0;
978: }
979:
980: // ---------------------------------------------------------
981:
982: /*
983: * rpc_srv_execCall() Execute registered call from RPC server
1.7 misho 984: *
1.1 misho 985: * @call = Register RPC call
986: * @rpc = IN RPC call structure
1.5 misho 987: * @args = IN RPC calling arguments from RPC client
1.1 misho 988: * return: -1 error, !=-1 ok
989: */
990: int
1.2 misho 991: rpc_srv_execCall(rpc_func_t * __restrict call, struct tagRPCCall * __restrict rpc,
1.5 misho 992: array_t * __restrict args)
1.1 misho 993: {
994: void *dl;
995: rpc_callback_t func;
996: int ret;
997:
1.7 misho 998: ioTRACE(RPC_TRACE_LEVEL);
999:
1.2 misho 1000: if (!call || !rpc || !call->func_parent) {
1.7 misho 1001: rpc_SetErr(EINVAL, "Invalid parameter can`t exec function");
1.1 misho 1002: return -1;
1003: }
1004:
1.8.2.1 misho 1005: dl = dlopen(AIT_ADDR(&call->func_file), RTLD_NOW);
1.1 misho 1006: if (!dl) {
1.7 misho 1007: rpc_SetErr(ENOENT, "Can`t attach module %s!", dlerror());
1.1 misho 1008: return -1;
1009: }
1010:
1.7 misho 1011: func = dlsym(dl, (const char*) AIT_GET_STR(&call->func_name));
1.1 misho 1012: if (func)
1.6 misho 1013: ret = func(call, ntohs(rpc->call_argc), args);
1.1 misho 1014: else {
1.7 misho 1015: rpc_SetErr(ENOEXEC, "Can`t find function %s!", dlerror());
1.1 misho 1016: ret = -1;
1017: }
1018:
1019: dlclose(dl);
1020: return ret;
1021: }
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