--- libaitrpc/src/srv.c 2012/07/22 20:44:13 1.11 +++ libaitrpc/src/srv.c 2014/01/28 14:05:43 1.23 @@ -3,7 +3,7 @@ * by Michael Pounov * * $Author: misho $ -* $Id: srv.c,v 1.11 2012/07/22 20:44:13 misho Exp $ +* $Id: srv.c,v 1.23 2014/01/28 14:05:43 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 - 2014 by Michael Pounov . All rights reserved. Redistribution and use in source and binary forms, with or without @@ -46,56 +46,162 @@ SUCH DAMAGE. #include "global.h" -static void * -closeClient(sched_task_t *task) +/* 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 sched_task_func_t cbProto[SOCK_RAW + 1][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 */ +}; + +/* Global Signal Argument when kqueue support disabled */ + +static volatile uintptr_t _glSigArg = 0; + + +void +rpc_freeCli(rpc_cli_t * __restrict c) { - rpc_cli_t *c = TASK_ARG(task); rpc_srv_t *s = c->cli_parent; - schedCancelby(TASK_ROOT(task), taskMAX, CRITERIA_ARG, TASK_ARG(task), NULL); + schedCancelby(s->srv_root, taskMAX, CRITERIA_ARG, c, NULL); - /* close client socket */ - if (TASK_VAL(task)) - shutdown(c->cli_sock, SHUT_RDWR); - close(c->cli_sock); - /* free buffer */ AIT_FREE_VAL(&c->cli_buf); - io_arrayDel(s->srv_clients, c->cli_id, 0); + array_Del(s->srv_clients, c->cli_id, 0); if (c) - io_free(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; + + n = _check4freeslot(srv, sa); + 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)); + return 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); + return 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[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(io_arraySize(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 = htons(array_Size(RPC_RETVARS(c))); /* Go Encapsulate variables */ - ret = io_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 */ - io_freeVars(&c->cli_vars); + 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); @@ -104,17 +210,36 @@ txPacket(sched_task_t *task) } } - rpc->call_len = htons(wlen); + rpc->call_len = htonl(wlen); +#if 0 /* calculate CRC */ rpc->call_crc ^= rpc->call_crc; rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2)); +#endif /* send reply */ - ret = send(TASK_FD(task), buf, wlen, MSG_NOSIGNAL); - if (ret == -1 || ret != wlen) { - /* close connection */ - schedEvent(TASK_ROOT(task), closeClient, c, 42, 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; @@ -127,17 +252,17 @@ 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); /* Go decapsulate variables ... */ if (argc) { - arr = io_buffer2vars(buf + sizeof(struct tagRPCCall), - AIT_LEN(&c->cli_buf) - TASK_VAL(task) - sizeof(struct tagRPCCall), - argc, 1); + 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); @@ -148,6 +273,7 @@ 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); @@ -156,22 +282,25 @@ 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; if (argc) { /* without reply */ - io_freeVars(&c->cli_vars); + ait_freeVars(&c->cli_vars); rpc->call_argc ^= rpc->call_argc; } else { /* reply */ - rpc->call_argc = htons(io_arraySize(RPC_RETVARS(c))); + rpc->call_argc = htons(array_Size(RPC_RETVARS(c))); } } } - io_arrayDestroy(&arr); + array_Destroy(&arr); return NULL; } @@ -180,77 +309,93 @@ 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 crc, 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 }; - 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), closeClient, c, 42, NULL, 0); + 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; } - - /* 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"); - - off += len; - /* try next packet remaining into buffer */ - continue; + 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; - noreply = RPC_CHK_NOREPLY(rpc); +#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 - /* 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); - } + noreply = RPC_CHK_NOREPLY(rpc); - /* send RPC reply */ - if (!noreply) - schedWrite(TASK_ROOT(task), txPacket, TASK_ARG(task), TASK_FD(task), rpc, len); + /* check RPC packet session info */ + if (rpc_chkPktSession(&rpc->call_session, &s->srv_session)) { + rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session"); - off += len; - } while (rlen > 0); + 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); + } + /* 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; } @@ -259,66 +404,258 @@ acceptClients(sched_task_t *task) { rpc_srv_t *srv = TASK_ARG(task); rpc_cli_t *c = NULL; - register int i; - socklen_t salen = sizeof(io_sockaddr_t); + socklen_t salen = sizeof(sockaddr_t); + int sock; +#ifdef TCP_SESSION_TIMEOUT + struct timespec ts = { DEF_RPC_TIMEOUT, 0 }; +#endif - /* check free slots for connect */ - for (i = 0; i < io_arraySize(srv->srv_clients) && - (c = io_array(srv->srv_clients, i, rpc_cli_t*)); i++); - if (c) /* no more free slots! */ - goto end; - c = io_malloc(sizeof(rpc_cli_t)); + c = _allocClient(srv, NULL); if (!c) { - LOGERR; - srv->srv_kill = 1; - return NULL; - } else { - memset(c, 0, sizeof(rpc_cli_t)); - io_arraySet(srv->srv_clients, i, c); - c->cli_id = i; - c->cli_parent = srv; + 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; } - /* alloc empty buffer */ - AIT_SET_BUF2(&c->cli_buf, 0, srv->srv_netbuf); - /* 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); - io_arrayDel(srv->srv_clients, i, 42); + array_Del(srv->srv_clients, c->cli_id, 42); goto end; } else fcntl(c->cli_sock, F_SETFL, fcntl(c->cli_sock, F_GETFL) | O_NONBLOCK); - schedRead(TASK_ROOT(task), rxPacket, c, c->cli_sock, NULL, 0); +#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); return NULL; } -/* ------------------------------------------------------ */ static void * -closeBLOBClient(sched_task_t *task) +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, estlen, wlen = sizeof(struct tagRPCCall); + struct timespec ts = { DEF_RPC_TIMEOUT, 0 }; + struct pollfd pfd; - schedCancelby(TASK_ROOT(task), taskMAX, CRITERIA_ARG, TASK_ARG(task), NULL); + 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); - /* close client socket */ - if (TASK_VAL(task)) - shutdown(c->cli_sock, SHUT_RDWR); - close(c->cli_sock); + 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 */ + 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 = htons(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(&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); + } else + wlen += ret; + } + } + + rpc->call_len = htonl(wlen); + + /* calculate CRC */ + rpc->call_crc ^= rpc->call_crc; + rpc->call_crc = htons(crcFletcher16((u_short*) buf, wlen / 2)); + + /* send reply */ + 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; +} + +static void * +rxUDPPacket(sched_task_t *task) +{ + rpc_srv_t *srv = TASK_ARG(task); + rpc_cli_t *c = NULL; + 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), 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) { + EVERBOSE(1, "RPC client quota exceeded! Connection will be shutdown!\n"); + usleep(2000); /* blocked client delay */ + goto end; + } 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); + + /* 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); + } + + /* 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); + return NULL; + } + 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); + return NULL; + } + if (e_addrcmp(&c->cli_sa, &sa, 42)) + rlen ^= rlen; /* skip if arrive from different address */ + } + len = estlen; + + /* 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; + } + + 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: + schedReadSelf(task); + return 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); - io_arrayDel(s->srv_blob.clients, c->cli_id, 0); + array_Del(s->srv_blob.clients, c->cli_id, 0); if (c) - io_free(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); return NULL; } @@ -327,13 +664,8 @@ txBLOB(sched_task_t *task) { rpc_cli_t *c = TASK_ARG(task); u_char *buf = AIT_GET_BUF(&c->cli_buf); - struct tagBLOBHdr *blob = (struct tagBLOBHdr *) buf; int wlen = sizeof(struct tagBLOBHdr); - /* calculate CRC */ - blob->hdr_crc ^= blob->hdr_crc; - blob->hdr_crc = htons(crcFletcher16((u_short*) buf, wlen / 2)); - /* send reply */ wlen = send(TASK_FD(task), buf, wlen, MSG_NOSIGNAL); if (wlen == -1 || wlen != sizeof(struct tagBLOBHdr)) { @@ -352,7 +684,6 @@ rxBLOB(sched_task_t *task) rpc_blob_t *b; struct tagBLOBHdr blob; int rlen; - u_short crc; memset(&blob, 0, sizeof blob); rlen = recv(TASK_FD(task), &blob, sizeof blob, 0); @@ -370,18 +701,8 @@ rxBLOB(sched_task_t *task) return NULL; } - /* check integrity of packet */ - crc = ntohs(blob.hdr_crc); - blob.hdr_crc ^= blob.hdr_crc; - if (crc != crcFletcher16((u_short*) &blob, rlen / 2)) { - rpc_SetErr(ERPCMISMATCH, "Bad CRC BLOB packet"); - - schedReadSelf(task); - return NULL; - } - /* check RPC packet session info */ - if ((crc = rpc_chkPktSession(&blob.hdr_session, &s->srv_session))) { + if (rpc_chkPktSession(&blob.hdr_session, &s->srv_session)) { rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session"); blob.hdr_cmd = error; goto end; @@ -408,7 +729,8 @@ 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); @@ -440,42 +762,85 @@ 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(io_sockaddr_t); + socklen_t salen = sizeof(sockaddr_t); + int sock; +#ifdef TCP_NOPUSH + int n = 1; +#endif /* check free slots for connect */ - for (i = 0; i < io_arraySize(srv->srv_blob.clients) && - (c = io_array(srv->srv_blob.clients, i, rpc_cli_t*)); i++); - if (c) /* no more free slots! */ + 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 = io_malloc(sizeof(rpc_cli_t)); + } + + c = e_malloc(sizeof(rpc_cli_t)); if (!c) { LOGERR; srv->srv_kill = srv->srv_blob.kill = 1; return NULL; } else { memset(c, 0, sizeof(rpc_cli_t)); - io_arraySet(srv->srv_blob.clients, i, c); + array_Set(srv->srv_blob.clients, i, c); c->cli_id = i; c->cli_parent = srv; } /* alloc empty buffer */ - AIT_SET_BUF2(&c->cli_buf, 0, srv->srv_netbuf); + AIT_SET_BUFSIZ(&c->cli_buf, 0, srv->srv_netbuf); /* 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); - io_arrayDel(srv->srv_blob.clients, i, 42); + array_Del(srv->srv_blob.clients, i, 42); goto end; - } else + } 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); + } schedRead(TASK_ROOT(task), rxBLOB, c, c->cli_sock, NULL, 0); end: @@ -515,7 +880,7 @@ rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, u_s srv->srv_blob.server.cli_parent = srv; - memcpy(&srv->srv_blob.server.cli_sa, &srv->srv_server.cli_sa, sizeof(io_sockaddr_t)); + 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: srv->srv_blob.server.cli_sa.sin.sin_port = @@ -566,12 +931,15 @@ 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 blob clients */ - srv->srv_blob.clients = io_arrayInit(io_arraySize(srv->srv_clients)); + srv->srv_blob.clients = array_Init(array_Size(srv->srv_clients)); if (!srv->srv_blob.clients) { - rpc_SetErr(io_GetErrno(), "%s", io_GetError()); + rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError()); close(srv->srv_blob.server.cli_sock); AIT_FREE_VAL(&srv->srv_blob.dir); return -1; @@ -581,7 +949,7 @@ rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, u_s srv->srv_blob.root = schedBegin(); if (!srv->srv_blob.root) { rpc_SetErr(sched_GetErrno(), "%s", sched_GetError()); - io_arrayDestroy(&srv->srv_blob.clients); + array_Destroy(&srv->srv_blob.clients); close(srv->srv_blob.server.cli_sock); AIT_FREE_VAL(&srv->srv_blob.dir); return -1; @@ -596,13 +964,15 @@ 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); } /* @@ -624,14 +994,24 @@ rpc_srv_loopBLOBServer(rpc_srv_t * __restrict srv) return -1; } - fcntl(srv->srv_blob.server.cli_sock, F_SETFL, - fcntl(srv->srv_blob.server.cli_sock, F_GETFL) | O_NONBLOCK); - - if (listen(srv->srv_blob.server.cli_sock, io_arraySize(srv->srv_blob.clients)) == -1) { + if (listen(srv->srv_blob.server.cli_sock, array_Size(srv->srv_blob.clients)) == -1) { LOGERR; 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()); @@ -642,9 +1022,17 @@ 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 < io_arraySize(srv->srv_blob.clients); i++) { - c = io_array(srv->srv_blob.clients, i, rpc_cli_t*); + 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); @@ -652,21 +1040,12 @@ rpc_srv_loopBLOBServer(rpc_srv_t * __restrict srv) schedCancelby(srv->srv_blob.root, taskMAX, CRITERIA_ARG, c, NULL); AIT_FREE_VAL(&c->cli_buf); } - io_arrayDel(srv->srv_blob.clients, i, 42); + array_Del(srv->srv_blob.clients, i, 42); } - io_arrayDestroy(&srv->srv_blob.clients); + array_Destroy(&srv->srv_blob.clients); 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); - io_free(b); - } - - schedEnd(&srv->srv_blob.root); AIT_FREE_VAL(&srv->srv_blob.dir); return 0; } @@ -675,34 +1054,36 @@ rpc_srv_loopBLOBServer(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 (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_char regProcID, int concurentClients, - int netBuf, const char *csHost, u_short Port) +rpc_srv_initServer(u_char InstID, int concurentClients, int netBuf, + const char *csHost, u_short Port, int proto) { int n = 1; rpc_srv_t *srv = NULL; - io_sockaddr_t sa = IO_SOCKADDR_INIT; + sockaddr_t sa = E_SOCKADDR_INIT; - if (!concurentClients || !regProgID) { + if (!concurentClients || (proto < 0 || proto > SOCK_DGRAM)) { rpc_SetErr(EINVAL, "Invalid parameters can`t init RPC server"); return NULL; } - if (!io_gethostbyname(csHost, Port, &sa)) + if (!e_gethostbyname(csHost, Port, &sa)) return NULL; if (!Port) Port = RPC_DEFPORT; + if (!proto) + proto = SOCK_STREAM; if (netBuf < RPC_MIN_BUFSIZ) netBuf = BUFSIZ; else - netBuf = io_align(netBuf, 1); /* align netBuf length */ + netBuf = E_ALIGN(netBuf, 2); /* align netBuf length */ #ifdef HAVE_SRANDOMDEV srandomdev(); @@ -712,48 +1093,53 @@ rpc_srv_initServer(u_int regProgID, u_char regProcID, srandom((time(&tim) ^ getpid())); #endif - srv = io_malloc(sizeof(rpc_srv_t)); + 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_session.sess_version = RPC_VERSION; - srv->srv_session.sess_program = regProgID; - srv->srv_session.sess_process = regProcID; + 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 list */ - TAILQ_INIT(&srv->srv_funcs); + /* 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()); - io_free(srv); + pthread_mutex_destroy(&srv->srv_funcs.mtx); + e_free(srv); return NULL; } /* init pool for clients */ - srv->srv_clients = io_arrayInit(concurentClients); + srv->srv_clients = array_Init(concurentClients); if (!srv->srv_clients) { - rpc_SetErr(io_GetErrno(), "%s", io_GetError()); + rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError()); schedEnd(&srv->srv_root); - io_free(srv); + pthread_mutex_destroy(&srv->srv_funcs.mtx); + e_free(srv); return NULL; } /* create server socket */ - srv->srv_server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, SOCK_STREAM, 0); + srv->srv_server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, srv->srv_proto, 0); if (srv->srv_server.cli_sock == -1) { LOGERR; - io_arrayDestroy(&srv->srv_clients); + array_Destroy(&srv->srv_clients); schedEnd(&srv->srv_root); - io_free(srv); + 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) { @@ -773,16 +1159,19 @@ rpc_srv_initServer(u_int regProgID, u_char regProcID, srv->srv_server.cli_sa.sa.sa_len) == -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); - io_arrayDestroy(&srv->srv_clients); + array_Destroy(&srv->srv_clients); schedEnd(&srv->srv_root); - io_free(srv); + pthread_mutex_destroy(&srv->srv_funcs.mtx); + e_free(srv); return NULL; } @@ -792,20 +1181,22 @@ 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); - io_free(*psrv); + schedEnd(&(*psrv)->srv_root); + + pthread_mutex_destroy(&(*psrv)->srv_funcs.mtx); + e_free(*psrv); *psrv = NULL; } @@ -820,7 +1211,7 @@ rpc_srv_loopServer(rpc_srv_t * __restrict srv) { rpc_cli_t *c; register int i; - rpc_func_t *f, *tmp; + rpc_func_t *f; struct timespec ts = { RPC_SCHED_POLLING, 0 }; if (!srv) { @@ -828,15 +1219,14 @@ rpc_srv_loopServer(rpc_srv_t * __restrict srv) return -1; } - fcntl(srv->srv_server.cli_sock, F_SETFL, - fcntl(srv->srv_server.cli_sock, F_GETFL) | O_NONBLOCK); + if (srv->srv_proto == SOCK_STREAM) + if (listen(srv->srv_server.cli_sock, array_Size(srv->srv_clients)) == -1) { + LOGERR; + return -1; + } - if (listen(srv->srv_server.cli_sock, io_arraySize(srv->srv_clients)) == -1) { - LOGERR; - return -1; - } - - if (!schedRead(srv->srv_root, acceptClients, srv, srv->srv_server.cli_sock, NULL, 0)) { + 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; } @@ -846,31 +1236,33 @@ rpc_srv_loopServer(rpc_srv_t * __restrict srv) schedRun(srv->srv_root, &srv->srv_kill); /* close all clients connections & server socket */ - for (i = 0; i < io_arraySize(srv->srv_clients); i++) { - c = io_array(srv->srv_clients, i, rpc_cli_t*); + 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); schedCancelby(srv->srv_root, taskMAX, CRITERIA_ARG, c, NULL); - io_freeVars(&RPC_RETVARS(c)); + ait_freeVars(&RPC_RETVARS(c)); AIT_FREE_VAL(&c->cli_buf); } - io_arrayDel(srv->srv_clients, i, 42); + array_Del(srv->srv_clients, i, 42); } - io_arrayDestroy(&srv->srv_clients); + array_Destroy(&srv->srv_clients); close(srv->srv_server.cli_sock); /* detach exported calls */ - TAILQ_FOREACH_SAFE(f, &srv->srv_funcs, func_node, tmp) { - TAILQ_REMOVE(&srv->srv_funcs, f, func_node); + 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); - io_free(f); + e_free(f); } + srv->srv_funcs.avlh_root = NULL; + RPC_FUNCS_UNLOCK(&srv->srv_funcs); - schedEnd(&srv->srv_root); return 0; }