--- libaitrpc/src/srv.c 2013/04/02 15:50:14 1.15 +++ libaitrpc/src/srv.c 2015/01/21 21:17:05 1.25 @@ -3,7 +3,7 @@ * by Michael Pounov * * $Author: misho $ -* $Id: srv.c,v 1.15 2013/04/02 15:50:14 misho Exp $ +* $Id: srv.c,v 1.25 2015/01/21 21:17:05 misho Exp $ * ************************************************************************** The ELWIX and AITNET software is distributed under the following @@ -12,7 +12,7 @@ terms: All of the documentation and software included in the ELWIX and AITNET Releases is copyrighted by ELWIX - Sofia/Bulgaria -Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 +Copyright 2004 - 2015 by Michael Pounov . All rights reserved. Redistribution and use in source and binary forms, with or without @@ -59,15 +59,29 @@ static void *txUDPPacket(sched_task_t *); /* SOCK_RAW */ -static sched_task_func_t cbProto[SOCK_RAW + 1][4] = { +/* SOCK_BPF */ +static void *rxBPFPacket(sched_task_t *); +static void *txBPFPacket(sched_task_t *); + +/* SOCK_EXT */ +static void *rxEXTPacket(sched_task_t *); +static void *txEXTPacket(sched_task_t *); + +static sched_task_func_t cbProto[SOCK_MAX_SUPPORT][4] = { { acceptClients, closeClient, rxPacket, txPacket }, /* SOCK_STREAM */ { acceptClients, closeClient, rxPacket, txPacket }, /* SOCK_STREAM */ { rxUDPPacket, freeClient, rxUDPPacket, txUDPPacket }, /* SOCK_DGRAM */ - { NULL, NULL, NULL, NULL } /* SOCK_RAW */ + { NULL, NULL, NULL, NULL }, /* SOCK_RAW */ + { rxBPFPacket, freeClient, rxBPFPacket, txBPFPacket }, /* SOCK_BPF */ + { rxEXTPacket, freeClient, rxEXTPacket, txEXTPacket } /* SOCK_EXT */ }; +/* Global Signal Argument when kqueue support disabled */ -inline void +static volatile uintptr_t _glSigArg = 0; + + +void rpc_freeCli(rpc_cli_t * __restrict c) { rpc_srv_t *s = c->cli_parent; @@ -107,7 +121,10 @@ _allocClient(rpc_srv_t * __restrict srv, sockaddr_t * rpc_cli_t *c = NULL; int n; - n = _check4freeslot(srv, sa); + if (srv->srv_proto != SOCK_EXT) + n = _check4freeslot(srv, sa); + else + n = 0; if (n == -1) return NULL; else @@ -161,28 +178,43 @@ txPacket(sched_task_t *task) rpc_cli_t *c = TASK_ARG(task); rpc_srv_t *s = c->cli_parent; rpc_func_t *f = NULL; - u_char buf[USHRT_MAX] = { 0 }; + u_char *buf = AIT_GET_BUF(&c->cli_buf); struct tagRPCCall *rpc = (struct tagRPCCall*) buf; - int ret, wlen = sizeof(struct tagRPCCall); + int ret, estlen, wlen = sizeof(struct tagRPCCall); + struct pollfd pfd; +#ifdef TCP_SESSION_TIMEOUT + struct timespec ts = { DEF_RPC_TIMEOUT, 0 }; - /* copy RPC header */ - memcpy(buf, TASK_DATA(task), wlen); + schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL); + schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT], + TASK_ARG(task), ts, TASK_ARG(task), 0); +#endif if (rpc->call_argc) { f = rpc_srv_getCall(s, ntohs(rpc->call_tag)); if (!f) { rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server"); + rpc->call_argc ^= rpc->call_argc; rpc->call_rep.ret = RPC_ERROR(-1); rpc->call_rep.eno = RPC_ERROR(rpc_Errno); } else { - rpc->call_argc = htons(array_Size(RPC_RETVARS(c))); + /* calc estimated length */ + estlen = ait_resideVars(RPC_RETVARS(c)) + wlen; + if (estlen > AIT_LEN(&c->cli_buf)) + AIT_RE_BUF(&c->cli_buf, estlen); + buf = AIT_GET_BUF(&c->cli_buf); + rpc = (struct tagRPCCall*) buf; + + rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c)); /* Go Encapsulate variables */ - ret = ait_vars2buffer(buf + wlen, sizeof buf - wlen, RPC_RETVARS(c)); + ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen, + RPC_RETVARS(c)); /* Free return values */ ait_freeVars(&c->cli_vars); if (ret == -1) { rpc_SetErr(EBADRPC, "Prepare RPC packet failed"); + rpc->call_argc ^= rpc->call_argc; rpc->call_rep.ret = RPC_ERROR(-1); rpc->call_rep.eno = RPC_ERROR(rpc_Errno); @@ -191,7 +223,8 @@ txPacket(sched_task_t *task) } } - rpc->call_len = htons(wlen); + rpc->call_len = htonl(wlen); + rpc->call_io = RPC_ACK; #if 0 /* calculate CRC */ @@ -200,11 +233,27 @@ txPacket(sched_task_t *task) #endif /* send reply */ - ret = send(TASK_FD(task), buf, wlen, MSG_NOSIGNAL); - if (ret == -1 || ret != wlen) { - /* close connection */ - schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT], - TASK_ARG(task), 0, NULL, 0); + pfd.fd = TASK_FD(task); + pfd.events = POLLOUT; + for (; wlen > 0; wlen -= ret, buf += ret) { + if ((ret = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 || + pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) { + if (ret) + LOGERR; + else + rpc_SetErr(ETIMEDOUT, "Timeout reached! Client not respond"); + /* close connection */ + schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT], + TASK_ARG(task), 0, NULL, 0); + return NULL; + } + ret = send(TASK_FD(task), buf, MIN(wlen, s->srv_netbuf), MSG_NOSIGNAL); + if (ret == -1) { + /* close connection */ + schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT], + TASK_ARG(task), 0, NULL, 0); + return NULL; + } } return NULL; @@ -217,17 +266,17 @@ execCall(sched_task_t *task) rpc_srv_t *s = c->cli_parent; rpc_func_t *f = NULL; array_t *arr = NULL; - u_char *buf = AIT_GET_BUF(&c->cli_buf) + TASK_VAL(task); + u_char *buf = AIT_GET_BUF(&c->cli_buf); struct tagRPCCall *rpc = (struct tagRPCCall*) buf; - int argc = ntohs(rpc->call_argc); + int argc = rpc->call_argc; /* Go decapsulate variables ... */ if (argc) { arr = ait_buffer2vars(buf + sizeof(struct tagRPCCall), - AIT_LEN(&c->cli_buf) - TASK_VAL(task) - sizeof(struct tagRPCCall), - argc, 42); + AIT_LEN(&c->cli_buf) - sizeof(struct tagRPCCall), argc, 42); if (!arr) { rpc_SetErr(ERPCMISMATCH, "#%d - %s", elwix_GetErrno(), elwix_GetError()); + rpc->call_argc ^= rpc->call_argc; rpc->call_rep.ret = RPC_ERROR(-1); rpc->call_rep.eno = RPC_ERROR(rpc_Errno); @@ -238,6 +287,7 @@ execCall(sched_task_t *task) if (!(f = rpc_srv_getCall(s, ntohs(rpc->call_tag)))) { rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server"); + rpc->call_argc ^= rpc->call_argc; rpc->call_rep.ret = RPC_ERROR(-1); rpc->call_rep.eno = RPC_ERROR(rpc_Errno); @@ -246,7 +296,10 @@ execCall(sched_task_t *task) argc = RPC_CHK_NOREPLY(rpc); rpc->call_rep.ret = RPC_ERROR(rpc_srv_execCall(c, rpc, f->func_name, arr)); if (rpc->call_rep.ret == htonl(-1)) { - rpc->call_rep.eno = RPC_ERROR(errno); + if (!rpc->call_rep.eno) { + LOGERR; + rpc->call_rep.eno = RPC_ERROR(rpc_Errno); + } rpc->call_argc ^= rpc->call_argc; } else { rpc->call_rep.eno ^= rpc->call_rep.eno; @@ -256,7 +309,7 @@ execCall(sched_task_t *task) rpc->call_argc ^= rpc->call_argc; } else { /* reply */ - rpc->call_argc = htons(array_Size(RPC_RETVARS(c))); + rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c)); } } } @@ -270,85 +323,99 @@ rxPacket(sched_task_t *task) { rpc_cli_t *c = TASK_ARG(task); rpc_srv_t *s = c->cli_parent; - int len, rlen, noreply; - u_short off = TASK_DATLEN(task); + int len, rlen, noreply, estlen; #if 0 u_short crc; #endif u_char *buf = AIT_GET_BUF(&c->cli_buf); - struct tagRPCCall *rpc; + struct tagRPCCall *rpc = (struct tagRPCCall*) buf; + struct pollfd pfd; +#ifdef TCP_SESSION_TIMEOUT + struct timespec ts = { DEF_RPC_TIMEOUT, 0 }; - if (!off) - memset(buf, 0, AIT_LEN(&c->cli_buf)); - rlen = recv(TASK_FD(task), buf + off, AIT_LEN(&c->cli_buf) - off, 0); - if (rlen < 1) { + schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL); + schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT], + TASK_ARG(task), ts, TASK_ARG(task), 0); +#endif + + memset(buf, 0, sizeof(struct tagRPCCall)); + rlen = recv(TASK_FD(task), rpc, sizeof(struct tagRPCCall), MSG_PEEK); + if (rlen < sizeof(struct tagRPCCall)) { /* close connection */ schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT], TASK_ARG(task), 0, NULL, 0); return NULL; } else { - rlen += off; /* add reminded bytes from previous rxPacket, if exists! */ - off = 0; /* process buffer from start offset == 0 */ + estlen = ntohl(rpc->call_len); + if (estlen > AIT_LEN(&c->cli_buf)) + AIT_RE_BUF(&c->cli_buf, estlen); + rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf); + buf = AIT_GET_BUF(&c->cli_buf); + len = estlen; } - do { - /* check RPC packet */ - if (rlen < sizeof(struct tagRPCCall)) { - rpc_SetErr(ERPCMISMATCH, "Short RPC packet"); - - /* reminder received previous bytes ;) */ - schedRead(TASK_ROOT(task), TASK_FUNC(task), TASK_ARG(task), - TASK_FD(task), TASK_DATA(task), rlen); + /* get next part of packet */ + memset(buf, 0, len); + pfd.fd = TASK_FD(task); + pfd.events = POLLIN | POLLPRI; + for (; len > 0; len -= rlen, buf += rlen) { + if ((rlen = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 || + pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) { + if (rlen) + LOGERR; + else + rpc_SetErr(ETIMEDOUT, "Timeout reached! Client not respond"); + schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT], + TASK_ARG(task), 0, NULL, 0); return NULL; - } else - rpc = (struct tagRPCCall*) (buf + off); - - len = ntohs(rpc->call_len); - rlen -= len; - - /* check RPC packet lengths */ - if (rlen < 0 || len < sizeof(struct tagRPCCall)) { - rpc_SetErr(ERPCMISMATCH, "Broken RPC packet length"); - /* skip entire packet */ - break; } + rlen = recv(TASK_FD(task), buf, len, 0); + if (rlen == -1) { + /* close connection */ + schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT], + TASK_ARG(task), 0, NULL, 0); + return NULL; + } + } + len = estlen; -#if 0 - /* check integrity of packet */ - crc = ntohs(rpc->call_crc); - rpc->call_crc ^= rpc->call_crc; - if (crc != crcFletcher16((u_short*) rpc, len / 2)) { - rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet"); + /* skip loop packet */ + if (rpc->call_io & RPC_ACK) { + schedReadSelf(task); + return NULL; + } - off += len; - /* try next packet remaining into buffer */ - continue; - } +#if 0 + /* check integrity of packet */ + crc = ntohs(rpc->call_crc); + rpc->call_crc ^= rpc->call_crc; + if (crc != crcFletcher16((u_short*) rpc, len / 2)) { + rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet"); + return NULL; + } #endif - noreply = RPC_CHK_NOREPLY(rpc); + noreply = RPC_CHK_NOREPLY(rpc); - /* check RPC packet session info */ - if (rpc_chkPktSession(&rpc->call_session, &s->srv_session)) { - rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session"); - rpc->call_argc ^= rpc->call_argc; - rpc->call_rep.ret = RPC_ERROR(-1); - rpc->call_rep.eno = RPC_ERROR(errno); - } else { - /* execute RPC call */ - schedEvent(TASK_ROOT(task), execCall, TASK_ARG(task), off, NULL, 0); - } + /* check RPC packet session info */ + if (rpc_chkPktSession(&rpc->call_session, &s->srv_session)) { + rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session"); - /* send RPC reply */ - if (!noreply) - schedWrite(TASK_ROOT(task), cbProto[s->srv_proto][CB_TXPACKET], - TASK_ARG(task), TASK_FD(task), rpc, len); + rpc->call_argc ^= rpc->call_argc; + rpc->call_rep.ret = RPC_ERROR(-1); + rpc->call_rep.eno = RPC_ERROR(errno); + } else { + /* execute RPC call */ + schedEvent(TASK_ROOT(task), execCall, TASK_ARG(task), (int) noreply, rpc, len); + } - off += len; - } while (rlen > 0); + /* send RPC reply */ + if (!noreply) + schedWrite(TASK_ROOT(task), cbProto[s->srv_proto][CB_TXPACKET], + TASK_ARG(task), TASK_FD(task), rpc, len); /* lets get next packet */ - schedRead(TASK_ROOT(task), TASK_FUNC(task), TASK_ARG(task), TASK_FD(task), TASK_DATA(task), 0); + schedReadSelf(task); return NULL; } @@ -358,10 +425,20 @@ acceptClients(sched_task_t *task) rpc_srv_t *srv = TASK_ARG(task); rpc_cli_t *c = NULL; socklen_t salen = sizeof(sockaddr_t); + int sock; +#ifdef TCP_SESSION_TIMEOUT + struct timespec ts = { DEF_RPC_TIMEOUT, 0 }; +#endif c = _allocClient(srv, NULL); - if (!c) + if (!c) { + EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n"); + if ((sock = accept(TASK_FD(task), NULL, NULL)) != -1) { + shutdown(sock, SHUT_RDWR); + close(sock); + } goto end; + } /* accept client */ c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen); @@ -373,6 +450,12 @@ acceptClients(sched_task_t *task) } else fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK); +#ifdef TCP_SESSION_TIMEOUT + /* armed timer for close stateless connection */ + schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL); + schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT], c, + ts, c, 0); +#endif schedRead(TASK_ROOT(task), cbProto[srv->srv_proto][CB_RXPACKET], c, c->cli_sock, NULL, 0); end: @@ -387,18 +470,16 @@ txUDPPacket(sched_task_t *task) rpc_cli_t *c = TASK_ARG(task); rpc_srv_t *s = c->cli_parent; rpc_func_t *f = NULL; - u_char buf[USHRT_MAX] = { 0 }; + u_char *buf = AIT_GET_BUF(&c->cli_buf); struct tagRPCCall *rpc = (struct tagRPCCall*) buf; - int ret, wlen = sizeof(struct tagRPCCall); + int ret, estlen, wlen = sizeof(struct tagRPCCall); struct timespec ts = { DEF_RPC_TIMEOUT, 0 }; + struct pollfd pfd; schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL); schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT], TASK_ARG(task), ts, TASK_ARG(task), 0); - /* copy RPC header */ - memcpy(buf, TASK_DATA(task), wlen); - if (rpc->call_argc) { f = rpc_srv_getCall(s, ntohs(rpc->call_tag)); if (!f) { @@ -407,9 +488,17 @@ txUDPPacket(sched_task_t *task) rpc->call_rep.ret = RPC_ERROR(-1); rpc->call_rep.eno = RPC_ERROR(rpc_Errno); } else { - rpc->call_argc = htons(array_Size(RPC_RETVARS(c))); + /* calc estimated length */ + estlen = ait_resideVars(RPC_RETVARS(c)) + wlen; + if (estlen > AIT_LEN(&c->cli_buf)) + AIT_RE_BUF(&c->cli_buf, estlen); + buf = AIT_GET_BUF(&c->cli_buf); + rpc = (struct tagRPCCall*) buf; + + rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c)); /* Go Encapsulate variables */ - ret = ait_vars2buffer(buf + wlen, sizeof buf - wlen, RPC_RETVARS(c)); + ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen, + RPC_RETVARS(c)); /* Free return values */ ait_freeVars(&c->cli_vars); if (ret == -1) { @@ -422,19 +511,36 @@ txUDPPacket(sched_task_t *task) } } - rpc->call_len = htons(wlen); + rpc->call_len = htonl(wlen); + rpc->call_io = RPC_ACK; /* calculate CRC */ rpc->call_crc ^= rpc->call_crc; rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2)); /* send reply */ - ret = sendto(TASK_FD(task), buf, wlen, MSG_NOSIGNAL, - &c->cli_sa.sa, c->cli_sa.sa.sa_len); - if (ret == -1 || ret != wlen) { - /* close connection */ - schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT], - TASK_ARG(task), 0, NULL, 0); + pfd.fd = TASK_FD(task); + pfd.events = POLLOUT; + for (; wlen > 0; wlen -= ret, buf += ret) { + if ((ret = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 || + pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) { + if (ret) + LOGERR; + else + rpc_SetErr(ETIMEDOUT, "Timeout reached! Client not respond"); + /* close connection */ + schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT], + TASK_ARG(task), 0, NULL, 0); + return NULL; + } + ret = sendto(TASK_FD(task), buf, MIN(wlen, s->srv_netbuf), MSG_NOSIGNAL, + &c->cli_sa.sa, c->cli_sa.sa.sa_len); + if (ret == -1) { + /* close connection */ + schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT], + TASK_ARG(task), 0, NULL, 0); + return NULL; + } } return NULL; @@ -445,91 +551,418 @@ rxUDPPacket(sched_task_t *task) { rpc_srv_t *srv = TASK_ARG(task); rpc_cli_t *c = NULL; - int len, rlen, noreply; - u_short crc, off = 0; - u_char buf[USHRT_MAX + 1]; - struct tagRPCCall *rpc = (struct tagRPCCall*) buf; + int len, rlen, noreply, estlen; + u_short crc; + u_char *buf, b[sizeof(struct tagRPCCall)]; + struct tagRPCCall *rpc = (struct tagRPCCall*) b; sockaddr_t sa; socklen_t salen; struct timespec ts = { DEF_RPC_TIMEOUT, 0 }; + struct pollfd pfd; /* receive connect packet */ salen = sa.ss.ss_len = sizeof(sockaddr_t); - rlen = recvfrom(TASK_FD(task), buf, sizeof buf, 0, &sa.sa, &salen); - if (rlen < 1) + rlen = recvfrom(TASK_FD(task), b, sizeof b, MSG_PEEK, &sa.sa, &salen); + if (rlen < sizeof(struct tagRPCCall)) { + rpc_SetErr(ERPCMISMATCH, "Short RPC packet"); goto end; + } c = _allocClient(srv, &sa); - if (!c) + if (!c) { + EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n"); + usleep(2000); /* blocked client delay */ goto end; - else { + } else { + estlen = ntohl(rpc->call_len); + if (estlen > AIT_LEN(&c->cli_buf)) + AIT_RE_BUF(&c->cli_buf, estlen); + rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf); + buf = AIT_GET_BUF(&c->cli_buf); + len = estlen; + c->cli_sock = TASK_FD(task); memcpy(&c->cli_sa, &sa, sizeof c->cli_sa); - memcpy(AIT_GET_BUF(&c->cli_buf), buf, AIT_LEN(&c->cli_buf)); + /* armed timer for close stateless connection */ schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL); schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT], c, ts, c, 0); } - do { - /* check RPC packet */ - if (rlen < sizeof(struct tagRPCCall)) { - rpc_SetErr(ERPCMISMATCH, "Short RPC packet"); - break; - } else - rpc = (struct tagRPCCall*) (AIT_GET_BUF(&c->cli_buf) + off); + /* get next part of packet */ + memset(buf, 0, len); + pfd.fd = TASK_FD(task); + pfd.events = POLLIN | POLLPRI; + for (; len > 0; len -= rlen, buf += rlen) { + if ((rlen = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 || + pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) { + if (rlen) + LOGERR; + else + rpc_SetErr(ETIMEDOUT, "Timeout reached! Client not respond"); + schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT], + c, 0, NULL, 0); + goto end; + } + salen = sa.ss.ss_len = sizeof(sockaddr_t); + rlen = recvfrom(TASK_FD(task), buf, len, 0, &sa.sa, &salen); + if (rlen == -1) { + /* close connection */ + schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT], + c, 0, NULL, 0); + goto end; + } + if (e_addrcmp(&c->cli_sa, &sa, 42)) + rlen ^= rlen; /* skip if arrive from different address */ + } + len = estlen; - len = ntohs(rpc->call_len); - rlen -= len; + /* skip loop packet */ + if (rpc->call_io & RPC_ACK) + goto end; - /* check RPC packet lengths */ - if (rlen < 0 || len < sizeof(struct tagRPCCall)) { - rpc_SetErr(ERPCMISMATCH, "Broken RPC packet length"); - /* skip entire packet */ - break; - } + /* check integrity of packet */ + crc = ntohs(rpc->call_crc); + rpc->call_crc ^= rpc->call_crc; + if (crc != crcFletcher16((u_short*) rpc, len / 2)) { + rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet"); + /* close connection */ + schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT], + c, 0, NULL, 0); + goto end; + } - /* check integrity of packet */ - crc = ntohs(rpc->call_crc); - rpc->call_crc ^= rpc->call_crc; - if (crc != crcFletcher16((u_short*) rpc, len / 2)) { - rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet"); + noreply = RPC_CHK_NOREPLY(rpc); - off += len; - /* try next packet remaining into buffer */ - continue; + /* check RPC packet session info */ + if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session)) { + rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session"); + + rpc->call_argc ^= rpc->call_argc; + rpc->call_rep.ret = RPC_ERROR(-1); + rpc->call_rep.eno = RPC_ERROR(errno); + } else { + /* execute RPC call */ + schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len); + } + + /* send RPC reply */ + if (!noreply) + schedWrite(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET], + c, TASK_FD(task), rpc, len); +end: + schedReadSelf(task); + return NULL; +} + + +static void * +txBPFPacket(sched_task_t *task) +{ + rpc_cli_t *c = TASK_ARG(task); + rpc_srv_t *s = c->cli_parent; + rpc_func_t *f = NULL; + u_char *buf = AIT_GET_BUF(&c->cli_buf); + struct tagRPCCall *rpc = (struct tagRPCCall*) buf; + int ret, len, wlen = sizeof(struct tagRPCCall); + struct timespec ts = { DEF_RPC_TIMEOUT, 0 }; + struct ether_header *eh; + ait_val_t b = AIT_VAL_INIT; + + schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL); + schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT], + TASK_ARG(task), ts, TASK_ARG(task), 0); + + if (rpc->call_argc) { + f = rpc_srv_getCall(s, ntohs(rpc->call_tag)); + if (!f) { + rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server"); + rpc->call_argc ^= rpc->call_argc; + rpc->call_rep.ret = RPC_ERROR(-1); + rpc->call_rep.eno = RPC_ERROR(rpc_Errno); + } else { + /* calc estimated length */ + len = ait_resideVars(RPC_RETVARS(c)) + wlen; + if (len > AIT_LEN(&c->cli_buf)) + AIT_RE_BUF(&c->cli_buf, len); + buf = AIT_GET_BUF(&c->cli_buf); + rpc = (struct tagRPCCall*) buf; + + rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c)); + /* Go Encapsulate variables */ + ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen, + RPC_RETVARS(c)); + /* Free return values */ + ait_freeVars(&RPC_RETVARS(c)); + if (ret == -1) { + rpc_SetErr(EBADRPC, "Prepare RPC packet failed"); + rpc->call_argc ^= rpc->call_argc; + rpc->call_rep.ret = RPC_ERROR(-1); + rpc->call_rep.eno = RPC_ERROR(rpc_Errno); + } else + wlen += ret; } + } - noreply = RPC_CHK_NOREPLY(rpc); + rpc->call_len = htonl(wlen); + rpc->call_io = RPC_ACK; - /* check RPC packet session info */ - if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session)) { - rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session"); + /* calculate CRC */ + rpc->call_crc ^= rpc->call_crc; + rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2)); + + /* send reply */ + AIT_SET_BUF(&b, NULL, MIN(wlen, s->srv_netbuf) + ETHER_HDR_LEN); + eh = (struct ether_header*) AIT_GET_BUF(&b); + memcpy(eh->ether_dhost, LLADDR(&c->cli_sa.sdl), ETHER_ADDR_LEN); + eh->ether_type = htons(RPC_DEFPORT); + memcpy(eh + 1, buf, MIN(wlen, s->srv_netbuf)); + + ret = write(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b)); + AIT_FREE_VAL(&b); + if (ret == -1) { + /* close connection */ + schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT], + TASK_ARG(task), 0, NULL, 0); + return NULL; + } + + return NULL; +} + +static void * +rxBPFPacket(sched_task_t *task) +{ + rpc_srv_t *srv = TASK_ARG(task); + rpc_cli_t *c = NULL; + int len, rlen, noreply; + u_short crc; + struct tagRPCCall *rpc; + sockaddr_t sa; + struct timespec ts = { DEF_RPC_TIMEOUT, 0 }; + struct bpf_hdr *h; + struct ether_header *eh; + ait_val_t b = AIT_VAL_INIT; + + /* receive connect packet */ + AIT_SET_BUF(&b, NULL, srv->srv_netbuf); + rlen = read(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b)); + h = (struct bpf_hdr*) AIT_GET_BUF(&b); + rlen -= h->bh_hdrlen; + if (rlen < h->bh_datalen || h->bh_caplen != h->bh_datalen || + rlen < ETHER_HDR_LEN + sizeof(struct tagRPCCall)) { + rpc_SetErr(ERPCMISMATCH, "Short RPC packet"); + goto end; + } else { + rlen = h->bh_caplen; + eh = (struct ether_header*) (AIT_GET_BUF(&b) + h->bh_hdrlen); + rlen -= ETHER_HDR_LEN; + rpc = (struct tagRPCCall*) (eh + 1); + +#if 0 + /* skip loop packet */ + if (rpc->call_io & RPC_ACK) + goto end; +#endif + + if (eh->ether_type != ntohs(RPC_DEFPORT)) + goto end; + else + e_getlinkbymac((const ether_addr_t*) eh->ether_shost, &sa); + } + + c = _allocClient(srv, &sa); + if (!c) { + EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n"); + usleep(2000); /* blocked client delay */ + goto end; + } else { + len = ntohl(rpc->call_len); + if (len > AIT_LEN(&c->cli_buf)) + AIT_RE_BUF(&c->cli_buf, len); + memcpy(AIT_GET_BUF(&c->cli_buf), rpc, AIT_LEN(&c->cli_buf)); + rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf); + + c->cli_sock = TASK_FD(task); + memcpy(&c->cli_sa, &sa, sizeof c->cli_sa); + + /* armed timer for close stateless connection */ + schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL); + schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT], + c, ts, c, 0); + } + + /* check integrity of packet */ + crc = ntohs(rpc->call_crc); + rpc->call_crc ^= rpc->call_crc; + if (crc != crcFletcher16((u_short*) rpc, len / 2)) { + rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet"); + /* close connection */ + schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT], + c, 0, NULL, 0); + goto end; + } + + noreply = RPC_CHK_NOREPLY(rpc); + + /* check RPC packet session info */ + if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session)) { + rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session"); + + rpc->call_argc ^= rpc->call_argc; + rpc->call_rep.ret = RPC_ERROR(-1); + rpc->call_rep.eno = RPC_ERROR(errno); + } else { + /* execute RPC call */ + schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len); + } + + /* send RPC reply */ + if (!noreply) + schedEvent(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET], + c, TASK_FD(task), rpc, len); +end: + AIT_FREE_VAL(&b); + schedReadSelf(task); + return NULL; +} + + +static void * +txEXTPacket(sched_task_t *task) +{ + rpc_cli_t *c = TASK_ARG(task); + rpc_srv_t *s = c->cli_parent; + rpc_func_t *f = NULL; + u_char *buf = AIT_GET_BUF(&c->cli_buf); + struct tagRPCCall *rpc = (struct tagRPCCall*) buf; + int ret, len, wlen = sizeof(struct tagRPCCall); + struct timespec ts = { DEF_RPC_TIMEOUT, 0 }; + + schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL); + schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT], + TASK_ARG(task), ts, TASK_ARG(task), 0); + + if (rpc->call_argc) { + f = rpc_srv_getCall(s, ntohs(rpc->call_tag)); + if (!f) { + rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server"); rpc->call_argc ^= rpc->call_argc; rpc->call_rep.ret = RPC_ERROR(-1); - rpc->call_rep.eno = RPC_ERROR(errno); + rpc->call_rep.eno = RPC_ERROR(rpc_Errno); } else { - /* execute RPC call */ - schedEvent(TASK_ROOT(task), execCall, c, off, NULL, 0); + /* calc estimated length */ + len = ait_resideVars(RPC_RETVARS(c)) + wlen; + if (len > AIT_LEN(&c->cli_buf)) + AIT_RE_BUF(&c->cli_buf, len); + buf = AIT_GET_BUF(&c->cli_buf); + rpc = (struct tagRPCCall*) buf; + + rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c)); + /* Go Encapsulate variables */ + ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen, + RPC_RETVARS(c)); + /* Free return values */ + ait_freeVars(&RPC_RETVARS(c)); + if (ret == -1) { + rpc_SetErr(EBADRPC, "Prepare RPC packet failed"); + rpc->call_argc ^= rpc->call_argc; + rpc->call_rep.ret = RPC_ERROR(-1); + rpc->call_rep.eno = RPC_ERROR(rpc_Errno); + } else + wlen += ret; } + } - /* send RPC reply */ - if (!noreply) - schedWrite(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET], - c, TASK_FD(task), rpc, len); + rpc->call_len = htonl(wlen); + rpc->call_io = RPC_ACK; - off += len; - } while (rlen > 0); + /* send reply */ + ret = write(TASK_FD(task), buf, MIN(wlen, s->srv_netbuf)); + if (ret == -1) { + /* close connection */ + schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT], + TASK_ARG(task), 0, NULL, 0); + return NULL; + } + return NULL; +} + +static void * +rxEXTPacket(sched_task_t *task) +{ + rpc_srv_t *srv = TASK_ARG(task); + rpc_cli_t *c = NULL; + int len, rlen, noreply; + struct tagRPCCall *rpc; + struct timespec ts = { DEF_RPC_TIMEOUT, 0 }; + ait_val_t b = AIT_VAL_INIT; + sockaddr_t sa; + + memset(&sa, 0, sizeof sa); + /* receive connect packet */ + AIT_SET_BUF(&b, NULL, srv->srv_netbuf); + rlen = read(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b)); + if (rlen < sizeof(struct tagRPCCall)) { + rpc_SetErr(ERPCMISMATCH, "Short RPC packet"); + goto end; + } else { + rpc = (struct tagRPCCall*) AIT_GET_BUF(&b); + + /* skip loop packet */ + if (rpc->call_io & RPC_ACK) + goto end; + } + + c = _allocClient(srv, &sa); + if (!c) { + EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n"); + usleep(2000); /* blocked client delay */ + goto end; + } else { + len = ntohl(rpc->call_len); + if (len > AIT_LEN(&c->cli_buf)) + AIT_RE_BUF(&c->cli_buf, len); + memcpy(AIT_GET_BUF(&c->cli_buf), rpc, AIT_LEN(&c->cli_buf)); + rpc = (struct tagRPCCall*) AIT_GET_BUF(&c->cli_buf); + + c->cli_sock = TASK_FD(task); + + /* armed timer for close stateless connection */ + schedCancelby(TASK_ROOT(task), taskTIMER, CRITERIA_DATA, c, NULL); + schedTimer(TASK_ROOT(task), cbProto[srv->srv_proto][CB_CLOSECLIENT], + c, ts, c, 0); + } + + noreply = RPC_CHK_NOREPLY(rpc); + + /* check RPC packet session info */ + if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session)) { + rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session"); + + rpc->call_argc ^= rpc->call_argc; + rpc->call_rep.ret = RPC_ERROR(-1); + rpc->call_rep.eno = RPC_ERROR(errno); + } else { + /* execute RPC call */ + schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len); + } + + /* send RPC reply */ + if (!noreply) + schedWrite(TASK_ROOT(task), cbProto[srv->srv_proto][CB_TXPACKET], + c, TASK_FD(task), rpc, len); end: + AIT_FREE_VAL(&b); schedReadSelf(task); return NULL; } /* ------------------------------------------------------ */ -inline void +void rpc_freeBLOBCli(rpc_cli_t * __restrict c) { rpc_srv_t *s = c->cli_parent; @@ -628,7 +1061,8 @@ rxBLOB(sched_task_t *task) } break; case set: - if ((b = rpc_srv_registerBLOB(s, ntohl(blob.hdr_len)))) { + if ((b = rpc_srv_registerBLOB(s, ntohl(blob.hdr_len), + ntohl(blob.hdr_ret)))) { /* set new BLOB variable for reply :) */ blob.hdr_var = htonl(b->blob_var); @@ -660,12 +1094,41 @@ end: } static void * +flushBLOB(sched_task_t *task) +{ + uintptr_t sigArg = atomic_load_acq_ptr(&_glSigArg); + rpc_srv_t *srv = sigArg ? (void*) sigArg : TASK_ARG(task); + rpc_blob_t *b, *tmp; + + TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) { + TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node); + + rpc_srv_blobFree(srv, b); + e_free(b); + } + + if (!schedSignalSelf(task)) { + /* disabled kqueue support in libaitsched */ + struct sigaction sa; + + memset(&sa, 0, sizeof sa); + sigemptyset(&sa.sa_mask); + sa.sa_handler = (void (*)(int)) flushBLOB; + sa.sa_flags = SA_RESTART | SA_RESETHAND; + sigaction(SIGFBLOB, &sa, NULL); + } + + return NULL; +} + +static void * acceptBLOBClients(sched_task_t *task) { rpc_srv_t *srv = TASK_ARG(task); rpc_cli_t *c = NULL; register int i; socklen_t salen = sizeof(sockaddr_t); + int sock; #ifdef TCP_NOPUSH int n = 1; #endif @@ -673,8 +1136,15 @@ acceptBLOBClients(sched_task_t *task) /* check free slots for connect */ for (i = 0; i < array_Size(srv->srv_blob.clients) && (c = array(srv->srv_blob.clients, i, rpc_cli_t*)); i++); - if (c) /* no more free slots! */ + if (c) { /* no more free slots! */ + EVERBOSE(1, "BLOB client quota exceeded! Connection will be shutdown!\n"); + if ((sock = accept(TASK_FD(task), NULL, NULL)) != -1) { + shutdown(sock, SHUT_RDWR); + close(sock); + } goto end; + } + c = e_malloc(sizeof(rpc_cli_t)); if (!c) { LOGERR; @@ -826,13 +1296,15 @@ rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, u_s * @srv = RPC Server instance * return: none */ -inline void +void rpc_srv_endBLOBServer(rpc_srv_t * __restrict srv) { if (!srv) return; srv->srv_blob.kill = 1; + + schedEnd(&srv->srv_blob.root); } /* @@ -859,6 +1331,19 @@ rpc_srv_loopBLOBServer(rpc_srv_t * __restrict srv) return -1; } + if (!schedSignal(srv->srv_blob.root, flushBLOB, srv, SIGFBLOB, NULL, 0)) { + /* disabled kqueue support in libaitsched */ + struct sigaction sa; + + atomic_store_rel_ptr(&_glSigArg, (uintptr_t) srv); + + memset(&sa, 0, sizeof sa); + sigemptyset(&sa.sa_mask); + sa.sa_handler = (void (*)(int)) flushBLOB; + sa.sa_flags = SA_RESTART | SA_RESETHAND; + sigaction(SIGFBLOB, &sa, NULL); + } + if (!schedRead(srv->srv_blob.root, acceptBLOBClients, srv, srv->srv_blob.server.cli_sock, NULL, 0)) { rpc_SetErr(sched_GetErrno(), "%s", sched_GetError()); @@ -869,6 +1354,14 @@ rpc_srv_loopBLOBServer(rpc_srv_t * __restrict srv) /* main rpc loop */ schedRun(srv->srv_blob.root, &srv->srv_blob.kill); + /* detach blobs */ + TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) { + TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node); + + rpc_srv_blobFree(srv, b); + e_free(b); + } + /* close all clients connections & server socket */ for (i = 0; i < array_Size(srv->srv_blob.clients); i++) { c = array(srv->srv_blob.clients, i, rpc_cli_t*); @@ -885,15 +1378,6 @@ rpc_srv_loopBLOBServer(rpc_srv_t * __restrict srv) close(srv->srv_blob.server.cli_sock); - /* detach blobs */ - TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) { - TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node); - - rpc_srv_blobFree(srv, b); - e_free(b); - } - - schedEnd(&srv->srv_blob.root); AIT_FREE_VAL(&srv->srv_blob.dir); return 0; } @@ -918,7 +1402,7 @@ rpc_srv_initServer(u_char InstID, int concurentClients rpc_srv_t *srv = NULL; sockaddr_t sa = E_SOCKADDR_INIT; - if (!concurentClients || (proto < 0 || proto > SOCK_DGRAM)) { + if (!concurentClients || (proto < 0 || proto > SOCK_RAW)) { rpc_SetErr(EINVAL, "Invalid parameters can`t init RPC server"); return NULL; } @@ -1029,19 +1513,20 @@ err: /* error condition */ * @psrv = RPC Server instance * return: none */ -inline void +void rpc_srv_endServer(rpc_srv_t ** __restrict psrv) { if (!psrv || !*psrv) return; /* if send kill to blob server */ - if (!(*psrv)->srv_blob.kill) - rpc_srv_endBLOBServer(*psrv); + rpc_srv_endBLOBServer(*psrv); (*psrv)->srv_kill = 1; sleep(RPC_SCHED_POLLING); + schedEnd(&(*psrv)->srv_root); + pthread_mutex_destroy(&(*psrv)->srv_funcs.mtx); e_free(*psrv); *psrv = NULL; @@ -1086,8 +1571,10 @@ rpc_srv_loopServer(rpc_srv_t * __restrict srv) for (i = 0; i < array_Size(srv->srv_clients); i++) { c = array(srv->srv_clients, i, rpc_cli_t*); if (c) { - shutdown(c->cli_sock, SHUT_RDWR); - close(c->cli_sock); + if (srv->srv_proto == SOCK_STREAM) { + shutdown(c->cli_sock, SHUT_RDWR); + close(c->cli_sock); + } schedCancelby(srv->srv_root, taskMAX, CRITERIA_ARG, c, NULL); ait_freeVars(&RPC_RETVARS(c)); @@ -1097,7 +1584,8 @@ rpc_srv_loopServer(rpc_srv_t * __restrict srv) } array_Destroy(&srv->srv_clients); - close(srv->srv_server.cli_sock); + if (srv->srv_proto != SOCK_EXT) + close(srv->srv_server.cli_sock); /* detach exported calls */ RPC_FUNCS_LOCK(&srv->srv_funcs); @@ -1110,7 +1598,6 @@ rpc_srv_loopServer(rpc_srv_t * __restrict srv) srv->srv_funcs.avlh_root = NULL; RPC_FUNCS_UNLOCK(&srv->srv_funcs); - schedEnd(&srv->srv_root); return 0; } @@ -1137,4 +1624,215 @@ rpc_srv_execCall(rpc_cli_t * __restrict cli, struct ta func = AIT_GET_LIKE(&funcname, rpc_callback_t); return func(cli, rpc, args); +} + + +/* + * rpc_srv_initServer2() - Init & create layer2 RPC Server + * + * @InstID = Instance for authentication & recognition + * @concurentClients = Concurent clients at same time to this server + * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet) + * @csIface = Interface name for bind server, if NULL first interface on host + * return: NULL == error or !=NULL bind and created RPC server instance + */ +rpc_srv_t * +rpc_srv_initServer2(u_char InstID, int concurentClients, int netBuf, const char *csIface) +{ + int n = 1; + rpc_srv_t *srv = NULL; + sockaddr_t sa = E_SOCKADDR_INIT; + char szIface[64], szStr[STRSIZ]; + register int i; + struct ifreq ifr; + struct bpf_insn insns[] = { + BPF_STMT(BPF_LD + BPF_H + BPF_ABS, 12), + BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, RPC_DEFPORT, 0, 1), + BPF_STMT(BPF_RET + BPF_K, -1), + BPF_STMT(BPF_RET + BPF_K, 0), + }; + struct bpf_program fcode = { + .bf_len = sizeof(insns) / sizeof(struct bpf_insn), + .bf_insns = insns + }; + + if (!concurentClients) { + rpc_SetErr(EINVAL, "Invalid parameters can`t init RPC server"); + return NULL; + } + if (!csIface) { + if (e_get1stiface(szIface, sizeof szIface)) + return NULL; + } else + strlcpy(szIface, csIface, sizeof szIface); + if (!e_getifacebyname(szIface, &sa)) + return NULL; + +#ifdef HAVE_SRANDOMDEV + srandomdev(); +#else + time_t tim; + + srandom((time(&tim) ^ getpid())); +#endif + + srv = e_malloc(sizeof(rpc_srv_t)); + if (!srv) { + LOGERR; + return NULL; + } else + memset(srv, 0, sizeof(rpc_srv_t)); + + srv->srv_proto = SOCK_BPF; + srv->srv_netbuf = netBuf; + srv->srv_session.sess_version = RPC_VERSION; + srv->srv_session.sess_instance = InstID; + + srv->srv_server.cli_parent = srv; + memcpy(&srv->srv_server.cli_sa, &sa, sizeof srv->srv_server.cli_sa); + + /* init functions */ + pthread_mutex_init(&srv->srv_funcs.mtx, NULL); + SLIST_INIT(&srv->srv_funcs); + AVL_INIT(&srv->srv_funcs); + + /* init scheduler */ + srv->srv_root = schedBegin(); + if (!srv->srv_root) { + rpc_SetErr(sched_GetErrno(), "%s", sched_GetError()); + pthread_mutex_destroy(&srv->srv_funcs.mtx); + e_free(srv); + return NULL; + } + + /* init pool for clients */ + srv->srv_clients = array_Init(concurentClients); + if (!srv->srv_clients) { + rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError()); + schedEnd(&srv->srv_root); + pthread_mutex_destroy(&srv->srv_funcs.mtx); + e_free(srv); + return NULL; + } + + /* create server handler */ + for (i = 0; i < 10; i++) { + memset(szStr, 0, sizeof szStr); + snprintf(szStr, sizeof szStr, "/dev/bpf%d", i); + srv->srv_server.cli_sock = open(szStr, O_RDWR); + if (srv->srv_server.cli_sock > STDERR_FILENO) + break; + } + if (srv->srv_server.cli_sock < 3) { + LOGERR; + array_Destroy(&srv->srv_clients); + schedEnd(&srv->srv_root); + pthread_mutex_destroy(&srv->srv_funcs.mtx); + e_free(srv); + return NULL; + } + + if (ioctl(srv->srv_server.cli_sock, BIOCIMMEDIATE, &n) == -1) { + LOGERR; + goto err; + } + if (ioctl(srv->srv_server.cli_sock, BIOCSETF, &fcode) == -1) { + LOGERR; + goto err; + } + n = (netBuf < RPC_MIN_BUFSIZ) ? getpagesize() : E_ALIGN(netBuf, 2); + if (ioctl(srv->srv_server.cli_sock, BIOCSBLEN, &n) == -1) { + LOGERR; + goto err; + } else + srv->srv_netbuf = n; + + memset(&ifr, 0, sizeof ifr); + strlcpy(ifr.ifr_name, szIface, sizeof ifr.ifr_name); + if (ioctl(srv->srv_server.cli_sock, BIOCSETIF, &ifr) == -1) { + LOGERR; + goto err; + } else + fcntl(srv->srv_server.cli_sock, F_SETFL, + fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK); + + rpc_register_srvPing(srv); + + return srv; +err: /* error condition */ + close(srv->srv_server.cli_sock); + array_Destroy(&srv->srv_clients); + schedEnd(&srv->srv_root); + pthread_mutex_destroy(&srv->srv_funcs.mtx); + e_free(srv); + return NULL; +} + +/* + * rpc_srv_initServerExt() - Init & create pipe RPC Server + * + * @InstID = Instance for authentication & recognition + * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet) + * @fd = File descriptor + * return: NULL == error or !=NULL bind and created RPC server instance + */ +rpc_srv_t * +rpc_srv_initServerExt(u_char InstID, int netBuf, int fd) +{ + rpc_srv_t *srv = NULL; + +#ifdef HAVE_SRANDOMDEV + srandomdev(); +#else + time_t tim; + + srandom((time(&tim) ^ getpid())); +#endif + + srv = e_malloc(sizeof(rpc_srv_t)); + if (!srv) { + LOGERR; + return NULL; + } else + memset(srv, 0, sizeof(rpc_srv_t)); + + srv->srv_proto = SOCK_EXT; + srv->srv_netbuf = (netBuf < RPC_MIN_BUFSIZ) ? + getpagesize() : E_ALIGN(netBuf, 2); + srv->srv_session.sess_version = RPC_VERSION; + srv->srv_session.sess_instance = InstID; + + srv->srv_server.cli_parent = srv; + srv->srv_server.cli_sock = fd; + + /* init functions */ + pthread_mutex_init(&srv->srv_funcs.mtx, NULL); + SLIST_INIT(&srv->srv_funcs); + AVL_INIT(&srv->srv_funcs); + + /* init scheduler */ + srv->srv_root = schedBegin(); + if (!srv->srv_root) { + rpc_SetErr(sched_GetErrno(), "%s", sched_GetError()); + pthread_mutex_destroy(&srv->srv_funcs.mtx); + e_free(srv); + return NULL; + } + + /* init pool for clients */ + srv->srv_clients = array_Init(1); + if (!srv->srv_clients) { + rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError()); + schedEnd(&srv->srv_root); + pthread_mutex_destroy(&srv->srv_funcs.mtx); + e_free(srv); + return NULL; + } + + fcntl(srv->srv_server.cli_sock, F_SETFL, + fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK); + + rpc_register_srvPing(srv); + + return srv; }