--- libaitrpc/src/srv.c 2012/03/15 01:55:33 1.7 +++ libaitrpc/src/srv.c 2015/07/22 20:01:46 1.28 @@ -3,7 +3,7 @@ * by Michael Pounov * * $Author: misho $ -* $Id: srv.c,v 1.7 2012/03/15 01:55:33 misho Exp $ +* $Id: srv.c,v 1.28 2015/07/22 20:01:46 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 +Copyright 2004 - 2015 by Michael Pounov . All rights reserved. Redistribution and use in source and binary forms, with or without @@ -46,58 +46,201 @@ SUCH DAMAGE. #include "global.h" -static void *rxPacket(sched_task_t*); -static void *rxBLOB(sched_task_t*); +/* SOCK_STREAM */ +static void *acceptClients(sched_task_t *); +static void *closeClient(sched_task_t *); +static void *rxPacket(sched_task_t *); +static void *txPacket(sched_task_t *); +/* SOCK_DGRAM */ +static void *freeClient(sched_task_t *); +static void *rxUDPPacket(sched_task_t *); +static void *txUDPPacket(sched_task_t *); + +/* SOCK_RAW */ +static void *rxRAWPacket(sched_task_t *); +static void *txRAWPacket(sched_task_t *); + +/* 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, NULL /*rxUDPPacket*/, txUDPPacket }, /* SOCK_DGRAM */ + { rxRAWPacket, freeClient, NULL /*rxRAWPacket*/, txRAWPacket }, /* SOCK_RAW */ + { rxBPFPacket, freeClient, NULL /*rxBPFPacket*/, txBPFPacket }, /* SOCK_BPF */ + { rxEXTPacket, freeClient, NULL /*rxEXTPacket*/, txEXTPacket } /* SOCK_EXT */ +}; + +/* Global Signal Argument when kqueue support disabled */ + +static volatile uintptr_t _glSigArg = 0; + +void +rpc_freeCli(rpc_cli_t * __restrict c) +{ + rpc_srv_t *s = c->cli_parent; + + schedCancelby(s->srv_root, taskMAX, CRITERIA_ARG, c, NULL); + + /* free buffer */ + AIT_FREE_VAL(&c->cli_buf); + + array_Del(s->srv_clients, c->cli_id, 0); + if (c) + e_free(c); +} + + +static inline int +_check4freeslot(rpc_srv_t * __restrict srv, sockaddr_t * __restrict sa) +{ + rpc_cli_t *c = NULL; + register int i; + + /* check free slots for connect */ + for (i = 0; i < array_Size(srv->srv_clients) && + (c = array(srv->srv_clients, i, rpc_cli_t*)); i++) + /* check for duplicates */ + if (sa && !e_addrcmp(&c->cli_sa, sa, 42)) + break; + if (i >= array_Size(srv->srv_clients)) + return -1; /* no more free slots! */ + + return i; +} + +static rpc_cli_t * +_allocClient(rpc_srv_t * __restrict srv, sockaddr_t * __restrict sa) +{ + rpc_cli_t *c = NULL; + int n; + + if (srv->srv_proto != SOCK_EXT) + n = _check4freeslot(srv, sa); + else + n = 0; + if (n == -1) + return NULL; + else + c = array(srv->srv_clients, n, rpc_cli_t*); + + if (!c) { + c = e_malloc(sizeof(rpc_cli_t)); + if (!c) { + LOGERR; + srv->srv_kill = 1; + return NULL; + } else { + memset(c, 0, sizeof(rpc_cli_t)); + array_Set(srv->srv_clients, n, c); + c->cli_id = n; + c->cli_parent = srv; + } + + /* alloc empty buffer */ + AIT_SET_BUFSIZ(&c->cli_buf, 0, srv->srv_netbuf); + } + + return c; +} + + static void * +freeClient(sched_task_t *task) +{ + rpc_freeCli(TASK_ARG(task)); + + taskExit(task, NULL); +} + +static void * +closeClient(sched_task_t *task) +{ + int sock = ((rpc_cli_t*) TASK_ARG(task))->cli_sock; + + rpc_freeCli(TASK_ARG(task)); + + /* close client socket */ + shutdown(sock, SHUT_RDWR); + close(sock); + taskExit(task, NULL); +} + +static void * 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 = TASK_DATA(task); + u_char *buf = AIT_GET_BUF(&c->cli_buf); struct tagRPCCall *rpc = (struct tagRPCCall*) buf; int ret, wlen = sizeof(struct tagRPCCall); - array_t *arr = NULL; +#ifdef TCP_SESSION_TIMEOUT + struct timespec ts = { DEF_RPC_TIMEOUT, 0 }; - ioTRACE(RPC_TRACE_LEVEL); + 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), ntohl(rpc->call_hash)); + 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); + RPC_SET_RETURN(rpc, -1); + RPC_SET_ERRNO(rpc, rpc_Errno); + } else if (rpc_pktFreeSpace(c) > s->srv_netbuf) { + rpc_SetErr(EMSGSIZE, "Message too long"); + + rpc->call_argc ^= rpc->call_argc; + RPC_SET_RETURN(rpc, -1); + RPC_SET_ERRNO(rpc, rpc_Errno); } else { - rpc->call_argc = htons(rpc_srv_getVars(f, &arr)); + rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c)); /* Go Encapsulate variables */ - ret = io_vars2buffer(buf + wlen, TASK_DATLEN(task) - wlen, arr); - io_clrVars(f->func_vars); + ret = ait_vars2buffer(buf + wlen, AIT_LEN(&c->cli_buf) - wlen, + 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); + RPC_SET_RETURN(rpc, -1); + RPC_SET_ERRNO(rpc, rpc_Errno); } else wlen += ret; } } + /* Free return values */ + ait_freeVars(&c->cli_vars); + + rpc->call_len = htonl(wlen); + rpc->call_io = RPC_ACK; + +#if 0 /* calculate CRC */ rpc->call_crc ^= rpc->call_crc; - rpc->call_crc = htons(crcFletcher16((u_short*) buf, io_align(wlen, 1) / 2)); + rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2)); +#endif /* send reply */ - ret = send(TASK_FD(task), buf, wlen, 0); - if (ret == -1) - LOGERR; - else if (ret != wlen) - rpc_SetErr(EPROCUNAVAIL, "RPC reply, should be send %d bytes, " - "really sended %d bytes", wlen, ret); - else - ioDEBUG(RPC_DEBUG_LEVEL, "Sended %d bytes", ret); + ret = send(TASK_FD(task), buf, wlen, 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; + taskExit(task, NULL); } static void * @@ -107,47 +250,56 @@ execCall(sched_task_t *task) rpc_srv_t *s = c->cli_parent; rpc_func_t *f = NULL; array_t *arr = NULL; - u_char *buf = TASK_DATA(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; - ioTRACE(RPC_TRACE_LEVEL); - /* Go decapsulate variables ... */ - if (!(rpc->call_req.flags & RPC_NOREPLY) && argc) { - arr = io_buffer2vars(buf + sizeof(struct tagRPCCall), - TASK_DATLEN(task) - sizeof(struct tagRPCCall), argc, 1); + if (argc) { + arr = ait_buffer2vars(buf + sizeof(struct tagRPCCall), + AIT_LEN(&c->cli_buf) - sizeof(struct tagRPCCall), argc, 42); if (!arr) { - rpc_SetErr(ERPCMISMATCH, "#%d - %s", io_GetErrno(), io_GetError()); + 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); - return NULL; + RPC_SET_RETURN(rpc, -1); + RPC_SET_ERRNO(rpc, rpc_Errno); + taskExit(task, NULL); } - } + } else + arr = NULL; - if (!(f = rpc_srv_getCall(s, ntohs(rpc->call_tag), ntohl(rpc->call_hash)))) { + 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); + RPC_SET_RETURN(rpc, -1); + RPC_SET_ERRNO(rpc, rpc_Errno); } else { - ioDEBUG(RPC_DEBUG_LEVEL, "RPC function %s from module %s", - AIT_GET_STR(&f->func_name), AIT_GET_LIKE(&f->func_file, char*)); - - rpc->call_rep.ret = RPC_ERROR(rpc_srv_execCall(f, rpc, arr)); + /* if client doesn't want reply */ + RPC_SET_RETURN(rpc, 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_SET_ERRNO(rpc, rpc_Errno); + } rpc->call_argc ^= rpc->call_argc; + ait_freeVars(&c->cli_vars); } else { rpc->call_rep.eno ^= rpc->call_rep.eno; - rpc->call_argc = htons(rpc_srv_getVars(f, NULL)); + rpc->call_argc ^= rpc->call_argc; + if (TASK_VAL(task)) { + /* without reply */ + ait_freeVars(&c->cli_vars); + } else { + /* reply */ + rpc->call_argc = (u_char) array_Size(RPC_RETVARS(c)); + } } } - if (arr) - io_arrayDestroy(&arr); - return NULL; + array_Destroy(&arr); + taskExit(task, NULL); } static void * @@ -155,314 +307,955 @@ rxPacket(sched_task_t *task) { rpc_cli_t *c = TASK_ARG(task); rpc_srv_t *s = c->cli_parent; - u_char *buf = TASK_DATA(task); - int rlen; + int len, noreply = 0, rlen = AIT_LEN(&c->cli_buf); +#if 0 u_short crc; - struct tagRPCCall *rpc; - struct timespec ts; +#endif + u_char *buf = AIT_GET_BUF(&c->cli_buf); + u_char b[sizeof(struct tagRPCCall)]; + struct tagRPCCall *rpc = (struct tagRPCCall*) buf; +#ifdef TCP_SESSION_TIMEOUT + struct timespec ts = { DEF_RPC_TIMEOUT, 0 }; - ioTRACE(RPC_TRACE_LEVEL); + 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, TASK_DATLEN(task)); - rlen = recv(TASK_FD(task), buf, TASK_DATLEN(task), 0); - if (rlen == -1) { - LOGERR; - s->srv_kill = s->srv_blob.state = kill; - return NULL; - } else if (!rlen) { /* receive EOF */ - s->srv_kill = s->srv_blob.state = kill; - return NULL; - } else - ioDEBUG(RPC_DEBUG_LEVEL, "Readed %d bytes", rlen); + /* prepare rx */ + len = recv(TASK_FD(task), b, sizeof b, MSG_PEEK); + if (len == sizeof b) + rlen = ntohl(((struct tagRPCCall*) b)->call_len); + rlen = recv(TASK_FD(task), buf, rlen, 0); + if (rlen == -1) { + /* close connection */ + schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT], + TASK_ARG(task), 0, NULL, 0); + taskExit(task, NULL); + } if (rlen < sizeof(struct tagRPCCall)) { - rpc_SetErr(ERPCMISMATCH, "Too short RPC packet"); + rpc_SetErr(ERPCMISMATCH, "Short RPC packet"); - schedRead(TASK_ROOT(task), rxPacket, TASK_ARG(task), TASK_FD(task), - TASK_DATA(task), TASK_DATLEN(task)); - return NULL; + rpc->call_argc ^= rpc->call_argc; + RPC_SET_RETURN(rpc, -1); + RPC_SET_ERRNO(rpc, rpc_Errno); + goto err; } else - rpc = (struct tagRPCCall*) buf; + len = ntohl(rpc->call_len); + if (rlen < len || len > AIT_LEN(&c->cli_buf)) { + rpc_SetErr(ERPCMISMATCH, "Short RPC packet"); + rpc->call_argc ^= rpc->call_argc; + RPC_SET_RETURN(rpc, -1); + RPC_SET_ERRNO(rpc, rpc_Errno); + goto err; + } + + /* skip loop packet */ + if (rpc->call_io & RPC_ACK) { + schedReadSelf(task); + taskExit(task, NULL); + } + +#if 0 /* check integrity of packet */ crc = ntohs(rpc->call_crc); rpc->call_crc ^= rpc->call_crc; - if (crc != crcFletcher16((u_short*) buf, io_align(rlen, 1) / 2)) { + if (crc != crcFletcher16((u_short*) rpc, len / 2)) { rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet"); - schedRead(TASK_ROOT(task), rxPacket, TASK_ARG(task), TASK_FD(task), - TASK_DATA(task), TASK_DATLEN(task)); - return NULL; + rpc->call_argc ^= rpc->call_argc; + RPC_SET_RETURN(rpc, -1); + RPC_SET_ERRNO(rpc, rpc_Errno); + goto err; } +#endif /* 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); - goto end; - } else { - /* change socket timeout from last packet */ - ts.tv_sec = rpc->call_session.sess_timeout; - ts.tv_nsec = 0; - schedPolling(TASK_ROOT(task), &ts, NULL); + RPC_SET_RETURN(rpc, -1); + RPC_SET_ERRNO(rpc, rpc_Errno); + goto err; } - /* execute RPC call */ - schedEvent(TASK_ROOT(task), execCall, TASK_ARG(task), 0, - TASK_DATA(task), TASK_DATLEN(task)); + noreply = RPC_CHK_NOREPLY(rpc); -end: + /* execute RPC call */ + schedEvent(TASK_ROOT(task), execCall, TASK_ARG(task), (int) noreply, rpc, len); +err: /* send RPC reply */ - if (!(rpc->call_req.flags & RPC_NOREPLY)) - schedWrite(TASK_ROOT(task), txPacket, TASK_ARG(task), TASK_FD(task), - TASK_DATA(task), TASK_DATLEN(task)); + 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), rxPacket, TASK_ARG(task), TASK_FD(task), - TASK_DATA(task), TASK_DATLEN(task)); - return NULL; + schedReadSelf(task); + taskExit(task, NULL); } static void * -rpc_srv_dispatchCall(void *arg) +acceptClients(sched_task_t *task) { - rpc_cli_t *c = arg; - rpc_srv_t *s; - u_char *buf; - sched_root_task_t *root; + 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 - ioTRACE(RPC_TRACE_LEVEL); + c = _allocClient(srv, NULL); + 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; + } - if (!arg) { - rpc_SetErr(EINVAL, "Invalid parameter can`t procced RPC client"); - return NULL; + /* accept client */ + c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen); + if (c->cli_sock == -1) { + LOGERR; + AIT_FREE_VAL(&c->cli_buf); + array_Del(srv->srv_clients, c->cli_id, 42); + goto end; } else - s = c->cli_parent; + fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK); - /* allocate net buffer */ - buf = malloc(s->srv_netbuf); - if (!buf) { - LOGERR; - return NULL; +#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: + schedReadSelf(task); + taskExit(task, NULL); +} + + +static void * +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 = AIT_GET_BUF(&c->cli_buf); + struct tagRPCCall *rpc = (struct tagRPCCall*) buf; + int ret, 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_SET_RETURN(rpc, -1); + RPC_SET_ERRNO(rpc, rpc_Errno); + } else if (rpc_pktFreeSpace(c) > s->srv_netbuf) { + rpc_SetErr(EMSGSIZE, "Message too long"); + + rpc->call_argc ^= rpc->call_argc; + RPC_SET_RETURN(rpc, -1); + RPC_SET_ERRNO(rpc, rpc_Errno); + } else { + 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)); + if (ret == -1) { + rpc_SetErr(EBADRPC, "Prepare RPC packet failed"); + + rpc->call_argc ^= rpc->call_argc; + RPC_SET_RETURN(rpc, -1); + RPC_SET_ERRNO(rpc, rpc_Errno); + } else + wlen += ret; + } } - root = schedBegin(); - if (!root) { - rpc_SetErr(sched_GetErrno(), "%s", sched_GetError()); - free(buf); - return NULL; + /* Free return values */ + ait_freeVars(&c->cli_vars); + + 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) { + /* close connection */ + schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT], + TASK_ARG(task), 0, NULL, 0); + } + + taskExit(task, NULL); +} + +static void * +rxUDPPacket(sched_task_t *task) +{ + rpc_srv_t *srv = TASK_ARG(task); + rpc_cli_t *c = NULL; + int len, noreply = 0, rlen; + u_short crc; + struct tagRPCCall *rpc; + sockaddr_t sa; + socklen_t salen; + struct timespec ts = { DEF_RPC_TIMEOUT, 0 }; + ait_val_t b = AIT_VAL_INIT; + + /* receive connect packet */ + AIT_SET_BUF(&b, NULL, srv->srv_netbuf); + salen = sa.ss.ss_len = (u_char) MIN(sizeof(sockaddr_t), 0xff); + rlen = recvfrom(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b), 0, &sa.sa, &salen); + rpc = (struct tagRPCCall*) AIT_GET_BUF(&b); + if (rlen < sizeof(struct tagRPCCall)) + goto end; + else + len = ntohl(rpc->call_len); + if (rlen < len || len > srv->srv_netbuf) + goto end; + + /* skip loop packet */ + if (rpc->call_io & RPC_ACK) + 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)) + goto end; + + /* check RPC packet session info */ + if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session)) + 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 { - schedTermCondition(root, kill); - schedPolling(root, &ts, NULL); + memcpy(AIT_GET_BUF(&c->cli_buf), AIT_GET_BUF(&b), len); + 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); } - schedRead(root, rxPacket, c, c->cli_sock, buf, s->srv_netbuf); + noreply = RPC_CHK_NOREPLY(rpc); - schedRun(root, (void*) &s->srv_kill); - schedEnd(&root); + /* execute RPC call */ + schedEvent(TASK_ROOT(task), execCall, c, (int) noreply, rpc, len); - shutdown(c->cli_sock, SHUT_RDWR); - close(c->cli_sock); - memset(c, 0, sizeof(rpc_cli_t)); - free(buf); - return NULL; + /* 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); + taskExit(task, NULL); } static void * -txBLOB(sched_task_t *task) +txRAWPacket(sched_task_t *task) { - u_char *buf = TASK_DATA(task); - struct tagBLOBHdr *blob = (struct tagBLOBHdr *) buf; - int wlen = sizeof(struct tagBLOBHdr); + 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, wlen = sizeof(struct tagRPCCall); + struct timespec ts = { DEF_RPC_TIMEOUT, 0 }; - ioTRACE(RPC_TRACE_LEVEL); + 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_SET_RETURN(rpc, -1); + RPC_SET_ERRNO(rpc, rpc_Errno); + } else if (rpc_pktFreeSpace(c) > s->srv_netbuf) { + rpc_SetErr(EMSGSIZE, "Message too long"); + + rpc->call_argc ^= rpc->call_argc; + RPC_SET_RETURN(rpc, -1); + RPC_SET_ERRNO(rpc, rpc_Errno); + } else { + 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)); + if (ret == -1) { + rpc_SetErr(EBADRPC, "Prepare RPC packet failed"); + + rpc->call_argc ^= rpc->call_argc; + RPC_SET_RETURN(rpc, -1); + RPC_SET_ERRNO(rpc, rpc_Errno); + } else + wlen += ret; + } + } + + /* Free return values */ + ait_freeVars(&c->cli_vars); + + rpc->call_len = htonl(wlen); + rpc->call_io = RPC_ACK; + /* calculate CRC */ - blob->hdr_crc ^= blob->hdr_crc; - blob->hdr_crc = htons(crcFletcher16((u_short*) buf, io_align(wlen, 1) / 2)); + rpc->call_crc ^= rpc->call_crc; + rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2)); /* send reply */ - wlen = send(TASK_FD(task), buf, wlen, 0); - if (wlen == -1) - LOGERR; - else if (wlen != sizeof(struct tagBLOBHdr)) - rpc_SetErr(EPROCUNAVAIL, "RPC reply, should be send %d bytes, " - "really sended %d bytes", sizeof(struct tagBLOBHdr), wlen); + ret = sendto(TASK_FD(task), buf, wlen, 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); + } + + taskExit(task, NULL); +} + +static void * +rxRAWPacket(sched_task_t *task) +{ + rpc_srv_t *srv = TASK_ARG(task); + rpc_cli_t *c = NULL; + int len, noreply = 0, rlen; + u_short crc; + struct tagRPCCall *rpc; + sockaddr_t sa; + socklen_t salen; + struct timespec ts = { DEF_RPC_TIMEOUT, 0 }; + ait_val_t b = AIT_VAL_INIT; + + /* receive connect packet */ + AIT_SET_BUF(&b, NULL, srv->srv_netbuf); + salen = sa.ss.ss_len = (u_char) MIN(sizeof(sockaddr_t), 0xff); + rlen = recvfrom(TASK_FD(task), AIT_GET_BUF(&b), AIT_LEN(&b), 0, &sa.sa, &salen); + if (sa.sa.sa_family == AF_INET) { + struct ip *h; + h = (struct ip*) AIT_GET_BUF(&b); + if (rlen < ntohs(h->ip_len) || h->ip_p != IPPROTO_ERPC) + goto end; + else { + rlen -= sizeof(struct ip); + rpc = (struct tagRPCCall*) (h + 1); + } + } else { + struct ip6_hdr *h; + h = (struct ip6_hdr*) AIT_GET_BUF(&b); + if (rlen < (ntohs(h->ip6_plen) + sizeof(struct ip6_hdr)) || + h->ip6_nxt != IPPROTO_ERPC) + goto end; + else { + rlen -= sizeof(struct ip6_hdr); + rpc = (struct tagRPCCall*) (h + 1); + } + } + if (rlen < sizeof(struct tagRPCCall)) + goto end; else - ioDEBUG(RPC_DEBUG_LEVEL, "Sended %d bytes", wlen); + len = ntohl(rpc->call_len); + if (rlen < len || len > srv->srv_netbuf) + goto end; - return NULL; + /* skip loop packet */ + if (rpc->call_io & RPC_ACK) + 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)) + goto end; + + /* check RPC packet session info */ + if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session)) + 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 { + memcpy(AIT_GET_BUF(&c->cli_buf), rpc, len); + 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); + } + + noreply = RPC_CHK_NOREPLY(rpc); + + /* 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); + taskExit(task, NULL); } + static void * -rxBLOB(sched_task_t *task) +txBPFPacket(sched_task_t *task) { rpc_cli_t *c = TASK_ARG(task); rpc_srv_t *s = c->cli_parent; - rpc_blob_t *b; - u_char *buf = TASK_DATA(task); - struct tagBLOBHdr *blob = (struct tagBLOBHdr *) buf; - int rlen; + rpc_func_t *f = NULL; + u_char *buf = AIT_GET_BUF(&c->cli_buf); + struct tagRPCCall *rpc = (struct tagRPCCall*) buf; + int ret, 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_SET_RETURN(rpc, -1); + RPC_SET_ERRNO(rpc, rpc_Errno); + } else if (rpc_pktFreeSpace(c) > s->srv_netbuf) { + rpc_SetErr(EMSGSIZE, "Message too long"); + + rpc->call_argc ^= rpc->call_argc; + RPC_SET_RETURN(rpc, -1); + RPC_SET_ERRNO(rpc, rpc_Errno); + } else { + 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)); + if (ret == -1) { + rpc_SetErr(EBADRPC, "Prepare RPC packet failed"); + + rpc->call_argc ^= rpc->call_argc; + RPC_SET_RETURN(rpc, -1); + RPC_SET_ERRNO(rpc, rpc_Errno); + } else + wlen += ret; + } + } + + /* Free return values */ + ait_freeVars(&RPC_RETVARS(c)); + + 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 */ + AIT_SET_BUF(&b, NULL, wlen + 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, wlen); + + 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); + } + + taskExit(task, 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 timespec ts; + 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; - ioTRACE(RPC_TRACE_LEVEL); + /* 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)) + 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); - /* check for disable service at this moment? */ - if (s->srv_blob.state == disable) { - usleep(100000); -#ifdef HAVE_PTHREAD_YIELD - pthread_yield(); + if (eh->ether_type != ntohs(RPC_DEFPORT)) + goto end; + else + e_getlinkbymac((const ether_addr_t*) eh->ether_shost, &sa); + } + if (rlen < sizeof(struct tagRPCCall)) + goto end; + else + len = ntohl(rpc->call_len); + if (rlen < len || len > srv->srv_netbuf) + goto end; + +#ifdef CHECK_ETHACK + /* skip loop packet */ + if (rpc->call_io & RPC_ACK) + goto end; #endif - schedRead(TASK_ROOT(task), rxBLOB, TASK_ARG(task), TASK_FD(task), - TASK_DATA(task), TASK_DATLEN(task)); - return NULL; + + /* check integrity of packet */ + crc = ntohs(rpc->call_crc); + rpc->call_crc ^= rpc->call_crc; + if (crc != crcFletcher16((u_short*) rpc, len / 2)) + goto end; + + /* check RPC packet session info */ + if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session)) + 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 { + memcpy(AIT_GET_BUF(&c->cli_buf), rpc, len); + 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); } - memset(buf, 0, TASK_DATLEN(task)); - rlen = recv(TASK_FD(task), buf, TASK_DATLEN(task), 0); - if (rlen == -1) { - LOGERR; - s->srv_blob.state = kill; - return NULL; - } else if (!rlen || s->srv_kill == kill) { /* receive EOF */ - s->srv_blob.state = kill; - return NULL; - } else - ioDEBUG(RPC_DEBUG_LEVEL, "Readed %d bytes", rlen); + noreply = RPC_CHK_NOREPLY(rpc); - if (rlen < sizeof(struct tagBLOBHdr)) { - rpc_SetErr(ERPCMISMATCH, "Too short BLOB packet"); - schedRead(TASK_ROOT(task), rxBLOB, TASK_ARG(task), TASK_FD(task), - TASK_DATA(task), TASK_DATLEN(task)); - return NULL; + /* 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); + taskExit(task, 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, 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_SET_RETURN(rpc, -1); + RPC_SET_ERRNO(rpc, rpc_Errno); + } else if (rpc_pktFreeSpace(c) > s->srv_netbuf) { + rpc_SetErr(EMSGSIZE, "Message too long"); + + rpc->call_argc ^= rpc->call_argc; + RPC_SET_RETURN(rpc, -1); + RPC_SET_ERRNO(rpc, rpc_Errno); + } else { + 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)); + if (ret == -1) { + rpc_SetErr(EBADRPC, "Prepare RPC packet failed"); + + rpc->call_argc ^= rpc->call_argc; + RPC_SET_RETURN(rpc, -1); + RPC_SET_ERRNO(rpc, rpc_Errno); + } else + wlen += ret; + } } - /* check integrity of packet */ - crc = ntohs(blob->hdr_crc); - blob->hdr_crc ^= blob->hdr_crc; - if (crc != crcFletcher16((u_short*) buf, io_align(rlen, 1) / 2)) { - rpc_SetErr(ERPCMISMATCH, "Bad CRC BLOB packet"); - schedRead(TASK_ROOT(task), rxBLOB, TASK_ARG(task), TASK_FD(task), - TASK_DATA(task), TASK_DATLEN(task)); - return NULL; + /* Free return values */ + ait_freeVars(&RPC_RETVARS(c)); + + rpc->call_len = htonl(wlen); + rpc->call_io = RPC_ACK; + + /* send reply */ + ret = write(TASK_FD(task), buf, wlen); + if (ret == -1) { + /* close connection */ + schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT], + TASK_ARG(task), 0, NULL, 0); } + taskExit(task, NULL); +} + +static void * +rxEXTPacket(sched_task_t *task) +{ + rpc_srv_t *srv = TASK_ARG(task); + rpc_cli_t *c = NULL; + int len, noreply = 0, rlen = AIT_LEN(&c->cli_buf); + struct tagRPCCall *rpc; + struct timespec ts = { DEF_RPC_TIMEOUT, 0 }; + sockaddr_t sa; + ait_val_t b = AIT_VAL_INIT; + + 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)); + rpc = (struct tagRPCCall*) AIT_GET_BUF(&b); + if (rlen < sizeof(struct tagRPCCall)) + goto end; + else + len = ntohl(rpc->call_len); + if (rlen < len || len > srv->srv_netbuf) + goto end; + + /* skip loop packet */ + if (rpc->call_io & RPC_ACK) + goto end; + /* check RPC packet session info */ - if ((crc = rpc_chkPktSession(&blob->hdr_session, &s->srv_session))) { - rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session"); - blob->hdr_cmd = error; + if (rpc_chkPktSession(&rpc->call_session, &srv->srv_session)) 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 { - /* change socket timeout from last packet */ - ts.tv_sec = blob->hdr_session.sess_timeout; - ts.tv_nsec = 0; - schedPolling(TASK_ROOT(task), &ts, NULL); + memcpy(AIT_GET_BUF(&c->cli_buf), AIT_GET_BUF(&b), len); + 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); + + /* 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); + taskExit(task, NULL); +} + +/* ------------------------------------------------------ */ + +void +rpc_freeBLOBCli(rpc_cli_t * __restrict c) +{ + rpc_srv_t *s = c->cli_parent; + + schedCancelby(s->srv_blob.root, taskMAX, CRITERIA_ARG, c, NULL); + + /* free buffer */ + AIT_FREE_VAL(&c->cli_buf); + + array_Del(s->srv_blob.clients, c->cli_id, 0); + if (c) + e_free(c); +} + + +static void * +closeBLOBClient(sched_task_t *task) +{ + int sock = ((rpc_cli_t*) TASK_ARG(task))->cli_sock; + + rpc_freeBLOBCli(TASK_ARG(task)); + + /* close client socket */ + shutdown(sock, SHUT_RDWR); + close(sock); + taskExit(task, NULL); +} + +static void * +txBLOB(sched_task_t *task) +{ + rpc_cli_t *c = TASK_ARG(task); + u_char *buf = AIT_GET_BUF(&c->cli_buf); + int wlen = sizeof(struct tagBLOBHdr); + + /* send reply */ + wlen = send(TASK_FD(task), buf, wlen, MSG_NOSIGNAL); + if (wlen == -1 || wlen != sizeof(struct tagBLOBHdr)) { + /* close blob connection */ + schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0); + } + + taskExit(task, NULL); +} + +static void * +rxBLOB(sched_task_t *task) +{ + rpc_cli_t *c = TASK_ARG(task); + rpc_srv_t *s = c->cli_parent; + rpc_blob_t *b; + struct tagBLOBHdr blob; + int rlen; + + memset(&blob, 0, sizeof blob); + rlen = recv(TASK_FD(task), &blob, sizeof blob, 0); + if (rlen < 1) { + /* close blob connection */ + schedEvent(TASK_ROOT(task), closeBLOBClient, c, 42, NULL, 0); + taskExit(task, NULL); + } + + /* check BLOB packet */ + if (rlen < sizeof(struct tagBLOBHdr)) { + rpc_SetErr(ERPCMISMATCH, "Short BLOB packet"); + + schedReadSelf(task); + taskExit(task, NULL); + } + + /* check RPC packet session info */ + if (rpc_chkPktSession(&blob.hdr_session, &s->srv_session)) { + rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session"); + blob.hdr_cmd = error; + goto end; + } + /* Go to proceed packet ... */ - switch (blob->hdr_cmd) { + switch (blob.hdr_cmd) { case get: - if (!(b = rpc_srv_getBLOB(s, ntohl(blob->hdr_var)))) { - rpc_SetErr(EINVAL, "Var=%x not found", ntohl(blob->hdr_var)); - blob->hdr_cmd = no; - blob->hdr_ret = RPC_ERROR(-1); + if (!(b = rpc_srv_getBLOB(s, ntohl(blob.hdr_var)))) { + rpc_SetErr(EINVAL, "Var=%x not found", ntohl(blob.hdr_var)); + blob.hdr_cmd = no; + RPC_SET_BLOB_RET(&blob, -1); break; } else - blob->hdr_len = htonl(b->blob_len); + blob.hdr_len = htonl(b->blob_len); if (rpc_srv_blobMap(s, b) != -1) { /* deliver BLOB variable to client */ - blob->hdr_ret = htonl(rpc_srv_sendBLOB(c, b)); + blob.hdr_ret = htonl(rpc_srv_sendBLOB(c, b)); rpc_srv_blobUnmap(b); } else { - blob->hdr_cmd = error; - blob->hdr_ret = RPC_ERROR(-1); + blob.hdr_cmd = error; + RPC_SET_BLOB_RET(&blob, -1); } 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); + blob.hdr_var = htonl(b->blob_var); /* receive BLOB from client */ - blob->hdr_ret = htonl(rpc_srv_recvBLOB(c, b)); + blob.hdr_ret = htonl(rpc_srv_recvBLOB(c, b)); rpc_srv_blobUnmap(b); } else { - blob->hdr_cmd = error; - blob->hdr_ret = RPC_ERROR(-1); + blob.hdr_cmd = error; + RPC_SET_BLOB_RET(&blob, -1); } break; case unset: - if (rpc_srv_unregisterBLOB(s, blob->hdr_var) == -1) { - blob->hdr_cmd = error; - blob->hdr_ret = RPC_ERROR(-1); + if (rpc_srv_unregisterBLOB(s, ntohl(blob.hdr_var)) == -1) { + blob.hdr_cmd = error; + RPC_SET_BLOB_RET(&blob, -1); } break; default: - rpc_SetErr(EPROCUNAVAIL, "Unsupported BLOB command %d", blob->hdr_cmd); - blob->hdr_cmd = error; - blob->hdr_ret = RPC_ERROR(-1); + rpc_SetErr(EPROCUNAVAIL, "Unsupported BLOB command %d", blob.hdr_cmd); + blob.hdr_cmd = error; + RPC_SET_BLOB_RET(&blob, -1); } end: - schedWrite(TASK_ROOT(task), txBLOB, TASK_ARG(task), TASK_FD(task), - TASK_DATA(task), TASK_DATLEN(task)); - schedRead(TASK_ROOT(task), rxBLOB, TASK_ARG(task), TASK_FD(task), - TASK_DATA(task), TASK_DATLEN(task)); - return NULL; + memcpy(AIT_ADDR(&c->cli_buf), &blob, sizeof blob); + schedWrite(TASK_ROOT(task), txBLOB, TASK_ARG(task), TASK_FD(task), NULL, 0); + schedReadSelf(task); + taskExit(task, NULL); } static void * -rpc_srv_dispatchVars(void *arg) +flushBLOB(sched_task_t *task) { - rpc_cli_t *c = arg; - rpc_srv_t *s; - sched_root_task_t *root; - u_char *buf; - struct timespec ts = { DEF_RPC_TIMEOUT, 0 }; +#ifdef atomic_load_acq_ptr + uintptr_t sigArg = atomic_load_acq_ptr(&_glSigArg); +#else + uintptr_t sigArg = *((volatile uintptr_t*) &_glSigArg); +#endif + rpc_srv_t *srv = sigArg ? (void*) sigArg : TASK_ARG(task); + rpc_blob_t *b, *tmp; - ioTRACE(RPC_TRACE_LEVEL); + TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) { + TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node); - if (!arg) { - rpc_SetErr(EINVAL, "Invalid parameter can`t procced BLOB"); - return NULL; - } else - s = c->cli_parent; + rpc_srv_blobFree(srv, b); + e_free(b); + } - /* allocate net buffer */ - buf = malloc(sizeof(struct tagBLOBHdr)); - if (!buf) { - LOGERR; - return NULL; + 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); } - root = schedBegin(); - if (!root) { - rpc_SetErr(sched_GetErrno(), "%s", sched_GetError()); - free(buf); - return NULL; + taskExit(task, 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 + + /* 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! */ + 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; + srv->srv_kill = srv->srv_blob.kill = 1; + taskExit(task, NULL); } else { - schedTermCondition(root, kill); - schedPolling(root, &ts, NULL); + memset(c, 0, sizeof(rpc_cli_t)); + array_Set(srv->srv_blob.clients, i, c); + c->cli_id = i; + c->cli_parent = srv; } - schedRead(root, rxBLOB, c, c->cli_sock, buf, sizeof(struct tagBLOBHdr)); + /* alloc empty buffer */ + AIT_SET_BUFSIZ(&c->cli_buf, 0, srv->srv_netbuf); - schedRun(root, (void*) &s->srv_blob.state); - schedEnd(&root); + /* accept client */ + c->cli_sock = accept(TASK_FD(task), &c->cli_sa.sa, &salen); + if (c->cli_sock == -1) { + LOGERR; + AIT_FREE_VAL(&c->cli_buf); + array_Del(srv->srv_blob.clients, i, 42); + goto end; + } else { +#ifdef TCP_NOPUSH + setsockopt(c->cli_sock, IPPROTO_TCP, TCP_NOPUSH, &n, sizeof n); +#endif + fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK); + } - shutdown(c->cli_sock, SHUT_RDWR); - close(c->cli_sock); - memset(c, 0, sizeof(rpc_cli_t)); - free(buf); - return NULL; + schedRead(TASK_ROOT(task), rxBLOB, c, c->cli_sock, NULL, 0); +end: + schedReadSelf(task); + taskExit(task, NULL); } -// ------------------------------------------------- +/* ------------------------------------------------------ */ /* * rpc_srv_initBLOBServer() - Init & create BLOB Server @@ -476,18 +1269,11 @@ int rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, u_short Port, const char *diskDir) { int n = 1; - io_sockaddr_t sa; - ioTRACE(RPC_TRACE_LEVEL); - - if (!srv) { + if (!srv || srv->srv_kill) { rpc_SetErr(EINVAL, "Invalid parameters can`t init BLOB server"); return -1; } - if (srv->srv_blob.state) { - rpc_SetErr(EPERM, "Already started BLOB server!"); - return 0; - } memset(&srv->srv_blob, 0, sizeof srv->srv_blob); if (access(diskDir, R_OK | W_OK) == -1) { @@ -496,25 +1282,29 @@ rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, u_s } else AIT_SET_STR(&srv->srv_blob.dir, diskDir); - srv->srv_blob.server.cli_tid = pthread_self(); + /* init blob list */ + TAILQ_INIT(&srv->srv_blob.blobs); + srv->srv_blob.server.cli_parent = srv; - memcpy(&sa, &srv->srv_server.cli_sa, sizeof sa); - switch (sa.sa.sa_family) { + memcpy(&srv->srv_blob.server.cli_sa, &srv->srv_server.cli_sa, sizeof(sockaddr_t)); + switch (srv->srv_blob.server.cli_sa.sa.sa_family) { case AF_INET: - sa.sin.sin_port = htons(Port ? Port : ntohs(sa.sin.sin_port) + 1); + srv->srv_blob.server.cli_sa.sin.sin_port = + htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin.sin_port) + 1); break; case AF_INET6: - sa.sin6.sin6_port = htons(Port ? Port : ntohs(sa.sin6.sin6_port) + 1); + srv->srv_blob.server.cli_sa.sin6.sin6_port = + htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin6.sin6_port) + 1); break; case AF_LOCAL: - strlcat(sa.sun.sun_path, ".blob", sizeof sa.sun.sun_path); + strlcat(srv->srv_blob.server.cli_sa.sun.sun_path, ".blob", + sizeof srv->srv_blob.server.cli_sa.sun.sun_path); break; default: AIT_FREE_VAL(&srv->srv_blob.dir); return -1; } - memcpy(&srv->srv_blob.server.cli_sa, &sa, sizeof sa); /* create BLOB server socket */ srv->srv_blob.server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, SOCK_STREAM, 0); @@ -548,26 +1338,30 @@ rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, u_s close(srv->srv_blob.server.cli_sock); AIT_FREE_VAL(&srv->srv_blob.dir); return -1; - } + } else + fcntl(srv->srv_blob.server.cli_sock, F_SETFL, + fcntl(srv->srv_blob.server.cli_sock, F_GETFL) | O_NONBLOCK); - /* allocate pool for concurent clients */ - srv->srv_blob.clients = calloc(srv->srv_numcli, sizeof(rpc_cli_t)); + + /* allocate pool for concurent blob clients */ + srv->srv_blob.clients = array_Init(array_Size(srv->srv_clients)); if (!srv->srv_blob.clients) { - LOGERR; + rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError()); close(srv->srv_blob.server.cli_sock); AIT_FREE_VAL(&srv->srv_blob.dir); return -1; - } else - memset(srv->srv_blob.clients, 0, srv->srv_numcli * sizeof(rpc_cli_t)); + } - pthread_mutex_init(&srv->srv_blob.mtx, NULL); + /* init blob scheduler */ + srv->srv_blob.root = schedBegin(); + if (!srv->srv_blob.root) { + rpc_SetErr(sched_GetErrno(), "%s", sched_GetError()); + array_Destroy(&srv->srv_blob.clients); + close(srv->srv_blob.server.cli_sock); + AIT_FREE_VAL(&srv->srv_blob.dir); + return -1; + } - rpc_srv_registerCall(srv, NULL, CALL_BLOBSHUTDOWN, 0); - rpc_srv_registerCall(srv, NULL, CALL_BLOBCLIENTS, 1); - rpc_srv_registerCall(srv, NULL, CALL_BLOBVARS, 1); - rpc_srv_registerCall(srv, NULL, CALL_BLOBSTATE, 0); - - srv->srv_blob.state = enable; /* enable BLOB */ return 0; } @@ -580,125 +1374,93 @@ rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, u_s void rpc_srv_endBLOBServer(rpc_srv_t * __restrict srv) { - rpc_cli_t *c; - register int i; - rpc_blob_t *f; - - ioTRACE(RPC_TRACE_LEVEL); - - if (!srv) { - rpc_SetErr(EINVAL, "Can`t destroy server because parameter is null!"); + if (!srv) return; - } else - srv->srv_blob.state = kill; - rpc_srv_unregisterCall(srv, NULL, CALL_BLOBSHUTDOWN); - rpc_srv_unregisterCall(srv, NULL, CALL_BLOBCLIENTS); - rpc_srv_unregisterCall(srv, NULL, CALL_BLOBVARS); - rpc_srv_unregisterCall(srv, NULL, CALL_BLOBSTATE); + srv->srv_blob.kill = 1; - /* close all clients connections & server socket */ - for (i = 0, c = srv->srv_blob.clients; i < srv->srv_numcli && c; i++, c++) - if (c->cli_sa.sa.sa_family) - shutdown(c->cli_sock, SHUT_RDWR); - close(srv->srv_blob.server.cli_sock); + if (srv->srv_blob.server.cli_sa.sa.sa_family == AF_LOCAL) + unlink(srv->srv_blob.server.cli_sa.sun.sun_path); - pthread_mutex_lock(&srv->srv_blob.mtx); - if (srv->srv_blob.clients) { - free(srv->srv_blob.clients); - srv->srv_blob.clients = NULL; - } - - /* detach blobs */ - while ((f = srv->srv_blob.blobs)) { - srv->srv_blob.blobs = f->blob_next; - rpc_srv_blobFree(srv, f); - free(f); - } - pthread_mutex_unlock(&srv->srv_blob.mtx); - - AIT_FREE_VAL(&srv->srv_blob.dir); - - while (pthread_mutex_trylock(&srv->srv_blob.mtx) == EBUSY); - pthread_mutex_destroy(&srv->srv_blob.mtx); + schedEnd(&srv->srv_blob.root); } /* - * rpc_srv_loopBLOB() - Execute Main BLOB server loop and wait for clients requests + * rpc_srv_loopBLOBServer() - Execute Main BLOB server loop and wait for clients requests * * @srv = RPC Server instance * return: -1 error or 0 ok, infinite loop ... */ int -rpc_srv_loopBLOB(rpc_srv_t * __restrict srv) +rpc_srv_loopBLOBServer(rpc_srv_t * __restrict srv) { - socklen_t salen = sizeof(io_sockaddr_t); - register int i; rpc_cli_t *c; - fd_set fds; - int ret; - struct timeval tv = { DEF_RPC_TIMEOUT, 0 }; - pthread_attr_t attr; + register int i; + rpc_blob_t *b, *tmp; + struct timespec ts = { RPC_SCHED_POLLING, 0 }; - ioTRACE(RPC_TRACE_LEVEL); - - if (!srv || srv->srv_blob.state == kill) { + if (!srv || srv->srv_kill) { rpc_SetErr(EINVAL, "Invalid parameter can`t start BLOB server"); return -1; } - tv.tv_sec = srv->srv_session.sess_timeout; - - if (listen(srv->srv_blob.server.cli_sock, SOMAXCONN) == -1) { + if (listen(srv->srv_blob.server.cli_sock, array_Size(srv->srv_blob.clients)) == -1) { LOGERR; return -1; } - pthread_attr_init(&attr); - pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED); + if (!schedSignal(srv->srv_blob.root, flushBLOB, srv, SIGFBLOB, NULL, 0)) { + /* disabled kqueue support in libaitsched */ + struct sigaction sa; - /* main BLOB loop */ - while (srv->srv_blob.state != kill && srv->srv_kill != kill) { - for (c = srv->srv_blob.clients, i = 0; i < srv->srv_numcli && c; i++, c++) - if (!c->cli_sa.sa.sa_family) - break; - if (i >= srv->srv_numcli) { -#ifdef HAVE_PTHREAD_YIELD - pthread_yield(); +#ifdef atomic_store_rel_ptr + atomic_store_rel_ptr(&_glSigArg, (uintptr_t) srv); #else - usleep(1000000); + *((volatile uintptr_t*) &_glSigArg) = (uintptr_t) srv; #endif - continue; - } - FD_ZERO(&fds); - FD_SET(srv->srv_blob.server.cli_sock, &fds); - ret = select(srv->srv_blob.server.cli_sock + 1, &fds, NULL, NULL, &tv); - if (ret == -1) { - LOGERR; - ret = 1; - break; - } - if (!ret) - continue; + 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); + } - c->cli_sock = accept(srv->srv_blob.server.cli_sock, &c->cli_sa.sa, &salen); - if (c->cli_sock == -1) { - LOGERR; - continue; - } else - c->cli_parent = srv; + if (!schedRead(srv->srv_blob.root, acceptBLOBClients, srv, + srv->srv_blob.server.cli_sock, NULL, 0)) { + rpc_SetErr(sched_GetErrno(), "%s", sched_GetError()); + return -1; + } - /* spawn dispatch thread for BLOB client */ - if (pthread_create(&c->cli_tid, &attr, rpc_srv_dispatchVars, c)) { - LOGERR; - continue; + schedPolling(srv->srv_blob.root, &ts, NULL); + /* 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*); + if (c) { + shutdown(c->cli_sock, SHUT_RDWR); + close(c->cli_sock); + + schedCancelby(srv->srv_blob.root, taskMAX, CRITERIA_ARG, c, NULL); + AIT_FREE_VAL(&c->cli_buf); } + array_Del(srv->srv_blob.clients, i, 42); } + array_Destroy(&srv->srv_blob.clients); - srv->srv_blob.state = kill; + close(srv->srv_blob.server.cli_sock); - pthread_attr_destroy(&attr); + AIT_FREE_VAL(&srv->srv_blob.dir); return 0; } @@ -706,139 +1468,128 @@ rpc_srv_loopBLOB(rpc_srv_t * __restrict srv) /* * rpc_srv_initServer() - Init & create RPC Server * - * @regProgID = ProgramID for authentication & recognition - * @regProcID = ProcessID for authentication & recognition + * @InstID = Instance for authentication & recognition * @concurentClients = Concurent clients at same time to this server - * @netBuf = Network buffer length, if =0 == BUFSIZ (also meaning max RPC packet) - * @family = Family type, AF_INET, AF_INET6 or AF_LOCAL + * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet) * @csHost = Host name or address for bind server, if NULL any address * @Port = Port for bind server, if Port == 0 default port is selected + * @proto = Protocol, if == 0 choose SOCK_STREAM * return: NULL == error or !=NULL bind and created RPC server instance */ rpc_srv_t * -rpc_srv_initServer(u_int regProgID, u_int regProcID, int concurentClients, - int netBuf, u_short family, const char *csHost, u_short Port) +rpc_srv_initServer(u_char InstID, int concurentClients, int netBuf, + const char *csHost, u_short Port, int proto) { - rpc_srv_t *srv = NULL; int n = 1; - struct hostent *host = NULL; - io_sockaddr_t sa; + rpc_srv_t *srv = NULL; + sockaddr_t sa = E_SOCKADDR_INIT; - ioTRACE(RPC_TRACE_LEVEL); - - if (!concurentClients || !regProgID || - (family != AF_INET && family != AF_INET6 && family != AF_LOCAL)) { - rpc_SetErr(EINVAL, "Error:: Invalid parameters can`t init RPC server ...\n"); + if (!concurentClients || (proto < 0 || proto > SOCK_RAW)) { + rpc_SetErr(EINVAL, "Invalid parameters can`t init RPC server"); return NULL; } - if (!Port) + if (!Port && proto < SOCK_RAW) Port = RPC_DEFPORT; - if (!netBuf) + if (!e_gethostbyname(csHost, Port, &sa)) + return NULL; + if (!proto) + proto = SOCK_STREAM; + if (netBuf < RPC_MIN_BUFSIZ) netBuf = BUFSIZ; else - netBuf = io_align(netBuf, 1); /* align netBuf length */ - if (csHost && family != AF_LOCAL) { - host = gethostbyname2(csHost, family); - if (!host) { - rpc_SetErr(h_errno, "Error:: %s\n", hstrerror(h_errno)); - return NULL; - } - } - memset(&sa, 0, sizeof sa); - sa.sa.sa_family = family; - switch (family) { - case AF_INET: - sa.sin.sin_len = sizeof(struct sockaddr_in); - sa.sin.sin_port = htons(Port); - if (csHost) - memcpy(&sa.sin.sin_addr, host->h_addr, host->h_length); - break; - case AF_INET6: - sa.sin6.sin6_len = sizeof(struct sockaddr_in6); - sa.sin6.sin6_port = htons(Port); - if (csHost) - memcpy(&sa.sin6.sin6_addr, host->h_addr, host->h_length); - break; - case AF_LOCAL: - sa.sun.sun_len = sizeof(struct sockaddr_un); - if (csHost) - strlcpy(sa.sun.sun_path, csHost, sizeof sa.sun.sun_path); - unlink(sa.sun.sun_path); - break; - default: - rpc_SetErr(EINVAL, "Error:: Invalid parameters can`t start RPC server ...\n"); - return NULL; - } + netBuf = E_ALIGN(netBuf, 2); /* align netBuf length */ - srv = malloc(sizeof(rpc_srv_t)); +#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 = proto; srv->srv_netbuf = netBuf; - srv->srv_numcli = concurentClients; srv->srv_session.sess_version = RPC_VERSION; - srv->srv_session.sess_timeout = DEF_RPC_TIMEOUT; - srv->srv_session.sess_program = regProgID; - srv->srv_session.sess_process = regProcID; + srv->srv_session.sess_instance = InstID; - srv->srv_server.cli_tid = pthread_self(); srv->srv_server.cli_parent = srv; - memcpy(&srv->srv_server.cli_sa, &sa, sizeof sa); + 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 socket */ - srv->srv_server.cli_sock = socket(family, SOCK_STREAM, 0); + srv->srv_server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, + srv->srv_proto, srv->srv_proto == SOCK_RAW ? IPPROTO_ERPC : 0); if (srv->srv_server.cli_sock == -1) { LOGERR; - free(srv); + array_Destroy(&srv->srv_clients); + schedEnd(&srv->srv_root); + pthread_mutex_destroy(&srv->srv_funcs.mtx); + e_free(srv); return NULL; } if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) { LOGERR; - close(srv->srv_server.cli_sock); - free(srv); - return NULL; + goto err; } + if (srv->srv_proto == SOCK_STREAM) + setsockopt(srv->srv_server.cli_sock, IPPROTO_TCP, TCP_NODELAY, &n, sizeof n); n = srv->srv_netbuf; if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) { LOGERR; - close(srv->srv_server.cli_sock); - free(srv); - return NULL; + goto err; } if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) { LOGERR; - close(srv->srv_server.cli_sock); - free(srv); - return NULL; + goto err; } if (bind(srv->srv_server.cli_sock, &srv->srv_server.cli_sa.sa, srv->srv_server.cli_sa.sa.sa_len) == -1) { LOGERR; - close(srv->srv_server.cli_sock); - free(srv); - return NULL; - } - - /* allocate pool for concurent clients */ - srv->srv_clients = calloc(srv->srv_numcli, sizeof(rpc_cli_t)); - if (!srv->srv_clients) { - LOGERR; - close(srv->srv_server.cli_sock); - free(srv); - return NULL; + goto err; } else - memset(srv->srv_clients, 0, srv->srv_numcli * sizeof(rpc_cli_t)); + fcntl(srv->srv_server.cli_sock, F_SETFL, + fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK); - pthread_mutex_init(&srv->srv_mtx, NULL); + rpc_register_srvPing(srv); - rpc_srv_registerCall(srv, NULL, CALL_SRVSHUTDOWN, 0); - rpc_srv_registerCall(srv, NULL, CALL_SRVCLIENTS, 1); - rpc_srv_registerCall(srv, NULL, CALL_SRVSESSIONS, 4); - rpc_srv_registerCall(srv, NULL, CALL_SRVCALLS, 1); 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; } /* @@ -850,48 +1601,25 @@ rpc_srv_initServer(u_int regProgID, u_int regProcID, i void rpc_srv_endServer(rpc_srv_t ** __restrict psrv) { - rpc_cli_t *c; - register int i; - rpc_func_t *f; - - ioTRACE(RPC_TRACE_LEVEL); - - if (!psrv || !*psrv) { - rpc_SetErr(EINVAL, "Error:: Can`t destroy server because parameter is null!\n"); + if (!psrv || !*psrv) return; - } + /* if send kill to blob server */ rpc_srv_endBLOBServer(*psrv); + /* wait for BLOB server done */ + while (*(&(*psrv)->srv_blob.root)) + usleep(1000); - /* close all clients connections & server socket */ - for (i = 0, c = (*psrv)->srv_clients; i < (*psrv)->srv_numcli && c; i++, c++) - if (c->cli_sa.sa.sa_family) { - shutdown(c->cli_sock, SHUT_RDWR); - close(c->cli_sock); - } - close((*psrv)->srv_server.cli_sock); + (*psrv)->srv_kill = 1; + sleep(RPC_SCHED_POLLING); - if ((*psrv)->srv_clients) { - free((*psrv)->srv_clients); - (*psrv)->srv_clients = NULL; - (*psrv)->srv_numcli = 0; - } + if ((*psrv)->srv_server.cli_sa.sa.sa_family == AF_LOCAL) + unlink((*psrv)->srv_server.cli_sa.sun.sun_path); - /* detach exported calls */ - pthread_mutex_lock(&(*psrv)->srv_mtx); - while ((f = (*psrv)->srv_funcs)) { - (*psrv)->srv_funcs = f->func_next; - io_freeVars(&f->func_vars); - AIT_FREE_VAL(&f->func_name); - AIT_FREE_VAL(&f->func_file); - free(f); - } - pthread_mutex_unlock(&(*psrv)->srv_mtx); + schedEnd(&(*psrv)->srv_root); - while (pthread_mutex_trylock(&(*psrv)->srv_mtx) == EBUSY); - pthread_mutex_destroy(&(*psrv)->srv_mtx); - - free(*psrv); + pthread_mutex_destroy(&(*psrv)->srv_funcs.mtx); + e_free(*psrv); *psrv = NULL; } @@ -904,116 +1632,298 @@ rpc_srv_endServer(rpc_srv_t ** __restrict psrv) int rpc_srv_loopServer(rpc_srv_t * __restrict srv) { - socklen_t salen = sizeof(io_sockaddr_t); - register int i; rpc_cli_t *c; - fd_set fds; - int ret; - struct timeval tv = { DEF_RPC_TIMEOUT, 0 }; - pthread_attr_t attr; + register int i; + rpc_func_t *f; + struct timespec ts = { RPC_SCHED_POLLING, 0 }; - ioTRACE(RPC_TRACE_LEVEL); - if (!srv) { - rpc_SetErr(EINVAL, "Error:: Invalid parameter can`t start RPC server ...\n"); + rpc_SetErr(EINVAL, "Invalid parameter can`t start RPC server"); return -1; } - tv.tv_sec = srv->srv_session.sess_timeout; + if (srv->srv_proto == SOCK_STREAM) + if (listen(srv->srv_server.cli_sock, array_Size(srv->srv_clients)) == -1) { + LOGERR; + return -1; + } - /* activate BLOB server worker if srv->srv_blob.state == enable */ - rpc_srv_execBLOBServer(srv); - - if (listen(srv->srv_server.cli_sock, SOMAXCONN) == -1) { - LOGERR; + if (!schedRead(srv->srv_root, cbProto[srv->srv_proto][CB_ACCEPTCLIENT], srv, + srv->srv_server.cli_sock, NULL, 0)) { + rpc_SetErr(sched_GetErrno(), "%s", sched_GetError()); return -1; } - pthread_attr_init(&attr); - pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED); - + schedPolling(srv->srv_root, &ts, NULL); /* main rpc loop */ - while (srv->srv_kill != kill) { - for (c = srv->srv_clients, i = 0; i < srv->srv_numcli && c; i++, c++) - if (!c->cli_sa.sa.sa_family) - break; - if (i >= srv->srv_numcli) { -#ifdef HAVE_PTHREAD_YIELD - pthread_yield(); -#else - usleep(1000000); -#endif - continue; - } + schedRun(srv->srv_root, &srv->srv_kill); - FD_ZERO(&fds); - FD_SET(srv->srv_server.cli_sock, &fds); - ret = select(srv->srv_server.cli_sock + 1, &fds, NULL, NULL, &tv); - if (ret == -1) { - LOGERR; - ret = 1; - break; + /* close all clients connections & server socket */ + for (i = 0; i < array_Size(srv->srv_clients); i++) { + c = array(srv->srv_clients, i, rpc_cli_t*); + if (c) { + 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)); + AIT_FREE_VAL(&c->cli_buf); } - if (!ret) - continue; + array_Del(srv->srv_clients, i, 42); + } + array_Destroy(&srv->srv_clients); - c->cli_sock = accept(srv->srv_server.cli_sock, &c->cli_sa.sa, &salen); - if (c->cli_sock == -1) { - LOGERR; - continue; - } else - c->cli_parent = srv; + if (srv->srv_proto != SOCK_EXT) + close(srv->srv_server.cli_sock); - /* spawn rpc client dispatcher */ - if (pthread_create(&c->cli_tid, &attr, rpc_srv_dispatchCall, c)) { - LOGERR; - continue; - } + /* detach exported calls */ + RPC_FUNCS_LOCK(&srv->srv_funcs); + while ((f = SLIST_FIRST(&srv->srv_funcs))) { + SLIST_REMOVE_HEAD(&srv->srv_funcs, func_next); + + AIT_FREE_VAL(&f->func_name); + e_free(f); } + srv->srv_funcs.avlh_root = NULL; + RPC_FUNCS_UNLOCK(&srv->srv_funcs); - pthread_attr_destroy(&attr); return 0; } -// --------------------------------------------------------- /* * rpc_srv_execCall() Execute registered call from RPC server * - * @call = Register RPC call + * @cli = RPC client * @rpc = IN RPC call structure + * @funcname = Execute RPC function * @args = IN RPC calling arguments from RPC client * return: -1 error, !=-1 ok */ int -rpc_srv_execCall(rpc_func_t * __restrict call, struct tagRPCCall * __restrict rpc, - array_t * __restrict args) +rpc_srv_execCall(rpc_cli_t * __restrict cli, struct tagRPCCall * __restrict rpc, + ait_val_t funcname, array_t * __restrict args) { - void *dl; rpc_callback_t func; - int ret; - ioTRACE(RPC_TRACE_LEVEL); - - if (!call || !rpc || !call->func_parent) { + if (!cli || !rpc || !AIT_ADDR(&funcname)) { rpc_SetErr(EINVAL, "Invalid parameter can`t exec function"); return -1; } - dl = dlopen(AIT_VOID(&call->func_file), RTLD_NOW); - if (!dl) { - rpc_SetErr(ENOENT, "Can`t attach module %s!", dlerror()); - return -1; + 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; - func = dlsym(dl, (const char*) AIT_GET_STR(&call->func_name)); - if (func) - ret = func(call, ntohs(rpc->call_argc), args); - else { - rpc_SetErr(ENOEXEC, "Can`t find function %s!", dlerror()); - ret = -1; +#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; } - dlclose(dl); - return ret; + /* 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; }