--- libaitrpc/src/srv.c 2011/05/02 23:12:08 1.2 +++ 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 1.2 2011/05/02 23:12:08 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 +Copyright 2004 - 2014 by Michael Pounov . All rights reserved. Redistribution and use in source and binary forms, with or without @@ -46,310 +46,814 @@ SUCH DAMAGE. #include "global.h" -static void * -rpc_srv_dispatchCall(void *arg) +/* 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 = arg; - rpc_srv_t *s; - rpc_val_t *vals = NULL, *v = NULL; - rpc_func_t *f; - struct tagRPCCall *rpc; - struct tagRPCRet rrpc; - fd_set fds; - u_char buf[BUFSIZ], *data; - int ret, argc = 0, Limit = 0; + 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; - if (!arg) { - rpc_SetErr(EINVAL, "Error:: Invalid parameter can`t procced RPC client ...\n"); + /* 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 - s = c->cli_parent; + else + c = array(srv->srv_clients, n, rpc_cli_t*); - do { - FD_ZERO(&fds); - FD_SET(c->cli_sock, &fds); - ret = select(c->cli_sock + 1, &fds, NULL, NULL, NULL); - if (ret == -1) { - ret = -2; - } - memset(&rrpc, 0, sizeof rrpc); - memset(buf, 0, BUFSIZ); - if ((ret = recv(c->cli_sock, buf, BUFSIZ, 0)) == -1) { + if (!c) { + c = e_malloc(sizeof(rpc_cli_t)); + if (!c) { LOGERR; - ret = -3; - break; + 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; } - if (!ret) { // receive EOF - ret = 0; - break; - } - if (ret < sizeof(struct tagRPCCall)) { - rpc_SetErr(EMSGSIZE, "Error:: too short RPC packet ...\n"); - ret = -4; - break; - } else + + /* 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 = AIT_GET_BUF(&c->cli_buf); + struct tagRPCCall *rpc = (struct tagRPCCall*) buf; + int ret, estlen, wlen = sizeof(struct tagRPCCall); + struct pollfd pfd; +#ifdef TCP_SESSION_TIMEOUT + 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); +#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 { + /* 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; - // check RPC packet session info - if (memcmp(&rpc->call_session, &s->srv_session, sizeof rpc->call_session)) { - rpc_SetErr(EINVAL, "Error:: get invalid RPC session ...\n"); - ret = -5; - goto makeReply; - } else - Limit = sizeof(struct tagRPCCall); - // RPC is OK! Go decapsulate variables ... - if (rpc->call_argc) { - v = (rpc_val_t*) (buf + Limit); - // check RPC packet length - if (rpc->call_argc * sizeof(rpc_val_t) > BUFSIZ - Limit) { - rpc_SetErr(EMSGSIZE, "Error:: Too big RPC packet ...\n"); - ret = -5; - goto makeReply; - } else - Limit += rpc->call_argc * sizeof(rpc_val_t); - // RPC received variables types OK! - data = (u_char*) v + rpc->call_argc * sizeof(rpc_val_t); - for (i = 0; i < rpc->call_argc; i++) { - switch (v[i].val_type) { - case buffer: - if (v[i].val_len > BUFSIZ - Limit) { - rpc_SetErr(EMSGSIZE, "Error:: Too big RPC packet ...\n"); - ret = -5; - goto makeReply; - } else - Limit += v[i].val_len; - v[i].val.buffer = data; - data += v[i].val_len; - break; - case string: - if (v[i].val_len + 1 > BUFSIZ - Limit) { - rpc_SetErr(EMSGSIZE, "Error:: Too big RPC packet ...\n"); - ret = -5; - goto makeReply; - } else - Limit += v[i].val_len; + 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"); - v[i].val.string = (int8_t*) data; - data += v[i].val_len + 1; - break; - case blob: - if (s->srv_blob.state == disable) { - rpc_SetErr(ENOTSUP, "Error:: BLOB server is disabled\n"); - ret = -5; - goto makeReply; - } - default: - break; - } - } + rpc->call_argc ^= rpc->call_argc; + rpc->call_rep.ret = RPC_ERROR(-1); + rpc->call_rep.eno = RPC_ERROR(rpc_Errno); + } else + wlen += ret; } + } - argc = 0; - vals = NULL; - if (!(f = rpc_srv_getCall(s, rpc->call_tag, rpc->call_hash))) { - rpc_SetErr(EINVAL, "Error:: call not found into RPC server ...\n"); - ret = -6; - } else - if ((ret = rpc_srv_execCall(f, rpc, v)) == -1) - ret = -9; + 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 */ + 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 - argc = rpc_srv_getValsCall(f, &vals); + 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; + } + } -makeReply: - memcpy(&rrpc.ret_session, &rpc->call_session, sizeof rrpc.ret_session); - rrpc.ret_tag = rpc->call_tag; - rrpc.ret_hash = rpc->call_hash; - rrpc.ret_errno = rpc_Errno; - rrpc.ret_retcode = ret; - rrpc.ret_argc = argc; + return NULL; +} - memset(buf, 0, BUFSIZ); - memcpy(buf, &rrpc, (Limit = sizeof rrpc)); - if (argc && vals) { - v = (rpc_val_t*) (buf + sizeof rrpc); - memcpy(v, vals, argc * sizeof(rpc_val_t)); - Limit += argc * sizeof(rpc_val_t); - data = (u_char*) v + argc * sizeof(rpc_val_t); - for (ret = i = 0; i < argc; i++) { - switch (vals[i].val_type) { - case buffer: - if (ret || Limit + vals[i].val_len > BUFSIZ) { - rpc_SetErr(EMSGSIZE, "Error:: in prepare RPC packet (-7) ...\n"); - rrpc.ret_retcode = ret = -7; - rrpc.ret_argc = 0; - break; - } +static void * +execCall(sched_task_t *task) +{ + rpc_cli_t *c = TASK_ARG(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); + struct tagRPCCall *rpc = (struct tagRPCCall*) buf; + int argc = ntohs(rpc->call_argc); - memcpy(data, vals[i].val.buffer, vals[i].val_len); - data += vals[i].val_len; - Limit += vals[i].val_len; - break; - case string: - if (ret || Limit + vals[i].val_len + 1 > BUFSIZ) { - rpc_SetErr(EMSGSIZE, "Error:: in prepare RPC packet (-7) ...\n"); - rrpc.ret_retcode = ret = -7; - rrpc.ret_argc = 0; - break; - } + /* Go decapsulate variables ... */ + 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", elwix_GetErrno(), elwix_GetError()); - memcpy(data, vals[i].val.string, vals[i].val_len + 1); - data += vals[i].val_len + 1; - Limit += vals[i].val_len + 1; - break; - case blob: - if (s->srv_blob.state == disable) { - rpc_SetErr(ENOTSUP, "Error:: BLOB server is disabled\n"); - rrpc.ret_retcode = ret = -5; - rrpc.ret_argc = 0; - break; - } - default: - break; - } + rpc->call_argc ^= rpc->call_argc; + rpc->call_rep.ret = RPC_ERROR(-1); + rpc->call_rep.eno = RPC_ERROR(rpc_Errno); + return NULL; + } + } else + arr = NULL; - RPC_FREE_VAL(&vals[i]); + 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); + } else { + /* if client doesn't want reply */ + 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)) { + 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 */ + ait_freeVars(&c->cli_vars); + rpc->call_argc ^= rpc->call_argc; + } else { + /* reply */ + rpc->call_argc = htons(array_Size(RPC_RETVARS(c))); + } } + } - if ((ret = send(c->cli_sock, buf, Limit, 0)) == -1) { - LOGERR; - ret = -8; - break; + array_Destroy(&arr); + return NULL; +} + +static void * +rxPacket(sched_task_t *task) +{ + rpc_cli_t *c = TASK_ARG(task); + rpc_srv_t *s = c->cli_parent; + 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*) buf; + struct pollfd pfd; +#ifdef TCP_SESSION_TIMEOUT + 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); +#endif + + memset(buf, 0, sizeof(struct tagRPCCall)); + rlen = recv(TASK_FD(task), rpc, sizeof(struct tagRPCCall), MSG_PEEK); + if (rlen < sizeof(struct tagRPCCall)) { + /* close connection */ + schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT], + TASK_ARG(task), 0, NULL, 0); + return NULL; + } else { + 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; + } + + /* 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; } - if (ret != Limit) { - rpc_SetErr(ECANCELED, "Error:: in send RPC request, should be send %d bytes, " - "really is %d\n", Limit, ret); - ret = -9; - break; + rlen = recv(TASK_FD(task), buf, len, 0); + if (rlen == -1) { + /* close connection */ + schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT], + TASK_ARG(task), 0, NULL, 0); + return NULL; } - } while (ret > -1); + } + len = estlen; - shutdown(c->cli_sock, SHUT_RDWR); - close(c->cli_sock); - memset(c, 0, sizeof(rpc_cli_t)); - return (void*) (long)ret; -} +#if 0 + /* check integrity of packet */ + crc = ntohs(rpc->call_crc); + rpc->call_crc ^= rpc->call_crc; + if (crc != crcFletcher16((u_short*) rpc, len / 2)) { + rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet"); + return NULL; + } +#endif + noreply = RPC_CHK_NOREPLY(rpc); + /* 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), (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 */ + schedReadSelf(task); + return NULL; +} + static void * -rpc_srv_dispatchVars(void *arg) +acceptClients(sched_task_t *task) { - rpc_cli_t *c = arg; - rpc_srv_t *s; - rpc_blob_t *b; - int ret; - fd_set fds; - u_char buf[sizeof(struct tagBLOBHdr)]; - struct tagBLOBHdr *blob; + 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 - if (!arg) { - rpc_SetErr(EINVAL, "Error:: Invalid parameter can`t procced BLOB client ...\n"); - return NULL; + 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; + } + + /* 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); - do { - // check for disable service at this moment? - if (s->srv_blob.state == disable) { - ret = 0; - break; +#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 * +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), taskTIMER, CRITERIA_DATA, TASK_ARG(task), NULL); + schedTimer(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT], + TASK_ARG(task), ts, TASK_ARG(task), 0); + + if (rpc->call_argc) { + f = rpc_srv_getCall(s, ntohs(rpc->call_tag)); + if (!f) { + rpc_SetErr(EPROGUNAVAIL, "Function not found at RPC server"); + rpc->call_argc ^= rpc->call_argc; + rpc->call_rep.ret = RPC_ERROR(-1); + rpc->call_rep.eno = RPC_ERROR(rpc_Errno); + } else { + /* calc estimated length */ + 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; } + } - FD_ZERO(&fds); - FD_SET(c->cli_sock, &fds); - ret = select(c->cli_sock + 1, &fds, NULL, NULL, NULL); + 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) { - ret = -2; + /* close connection */ + schedEvent(TASK_ROOT(task), cbProto[s->srv_proto][CB_CLOSECLIENT], + TASK_ARG(task), 0, NULL, 0); + return NULL; } + } - memset(buf, 0, sizeof buf); - if ((ret = recv(c->cli_sock, buf, sizeof buf, 0)) == -1) { - LOGERR; - ret = -3; - break; + 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; } - if (!ret || s->srv_blob.state == disable) { // receive EOF or disable service - ret = 0; - break; + 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 (ret < sizeof(struct tagBLOBHdr)) { - rpc_SetErr(EMSGSIZE, "Error:: too short BLOB packet ...\n"); - ret = -4; - break; - } else - blob = (struct tagBLOBHdr*) buf; - // check BLOB packet session info - if (memcmp(&blob->hdr_session, &s->srv_session, sizeof blob->hdr_session)) { - rpc_SetErr(EINVAL, "Error:: get invalid BLOB session ...\n"); - ret = -5; - goto makeReply; - } - // Go to proceed packet ... - switch (blob->hdr_cmd) { - case get: - if (!(b = rpc_srv_getBLOB(s, blob->hdr_var))) { - rpc_SetErr(EINVAL, "Error:: var (%x) not found into BLOB server ...\n", - blob->hdr_var); - ret = -6; - break; - } else - blob->hdr_len = b->blob_len; + if (e_addrcmp(&c->cli_sa, &sa, 42)) + rlen ^= rlen; /* skip if arrive from different address */ + } + len = estlen; - if (rpc_srv_blobMap(s, b) != -1) { - ret = rpc_srv_sendBLOB(c, b); - rpc_srv_blobUnmap(b); - } else - ret = -7; - break; - case set: - if ((b = rpc_srv_registerBLOB(s, blob->hdr_len))) { - // set new BLOB variable for reply :) - blob->hdr_var = b->blob_var; + /* 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; + } - ret = rpc_srv_recvBLOB(c, b); - rpc_srv_blobUnmap(b); - } else - ret = -7; + 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); + + 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); + return 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); + } + + return 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); + return NULL; + } + + /* check BLOB packet */ + if (rlen < sizeof(struct tagBLOBHdr)) { + rpc_SetErr(ERPCMISMATCH, "Short BLOB packet"); + + schedReadSelf(task); + return 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) { + 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); break; - case unset: - ret = rpc_srv_unregisterBLOB(s, blob->hdr_var); - if (ret == -1) - ret = -7; - break; - default: - rpc_SetErr(EINVAL, "Error:: unsupported BLOB command (%d)...\n", - blob->hdr_cmd); - ret = -7; - } + } else + blob.hdr_len = htonl(b->blob_len); -makeReply: - // Replay to client! - blob->hdr_cmd = ret < 0 ? error : ok; - blob->hdr_ret = ret; - if ((ret = send(c->cli_sock, buf, sizeof buf, 0)) == -1) { - LOGERR; - ret = -8; + if (rpc_srv_blobMap(s, b) != -1) { + /* deliver BLOB variable to client */ + blob.hdr_ret = htonl(rpc_srv_sendBLOB(c, b)); + rpc_srv_blobUnmap(b); + } else { + blob.hdr_cmd = error; + blob.hdr_ret = RPC_ERROR(-1); + } break; - } - if (ret != sizeof buf) { - rpc_SetErr(ECANCELED, "Error:: in send BLOB reply, should be send %d bytes, " - "really is %d\n", sizeof buf, ret); - ret = -9; + case set: + 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); + + /* receive BLOB from client */ + blob.hdr_ret = htonl(rpc_srv_recvBLOB(c, b)); + rpc_srv_blobUnmap(b); + } else { + blob.hdr_cmd = error; + blob.hdr_ret = RPC_ERROR(-1); + } break; + case unset: + if (rpc_srv_unregisterBLOB(s, ntohl(blob.hdr_var)) == -1) { + blob.hdr_cmd = error; + blob.hdr_ret = RPC_ERROR(-1); + } + break; + default: + rpc_SetErr(EPROCUNAVAIL, "Unsupported BLOB command %d", blob.hdr_cmd); + blob.hdr_cmd = error; + blob.hdr_ret = RPC_ERROR(-1); + } + +end: + memcpy(AIT_ADDR(&c->cli_buf), &blob, sizeof blob); + schedWrite(TASK_ROOT(task), txBLOB, TASK_ARG(task), TASK_FD(task), NULL, 0); + schedReadSelf(task); + return NULL; +} + +static void * +flushBLOB(sched_task_t *task) +{ + uintptr_t sigArg = atomic_load_acq_ptr(&_glSigArg); + rpc_srv_t *srv = sigArg ? (void*) sigArg : TASK_ARG(task); + rpc_blob_t *b, *tmp; + + TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp) { + TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node); + + rpc_srv_blobFree(srv, b); + e_free(b); + } + + if (!schedSignalSelf(task)) { + /* disabled kqueue support in libaitsched */ + struct sigaction sa; + + memset(&sa, 0, sizeof sa); + sigemptyset(&sa.sa_mask); + sa.sa_handler = (void (*)(int)) flushBLOB; + sa.sa_flags = SA_RESTART | SA_RESETHAND; + sigaction(SIGFBLOB, &sa, NULL); + } + + return NULL; +} + +static void * +acceptBLOBClients(sched_task_t *task) +{ + rpc_srv_t *srv = TASK_ARG(task); + rpc_cli_t *c = NULL; + register int i; + socklen_t salen = sizeof(sockaddr_t); + int sock; +#ifdef TCP_NOPUSH + int n = 1; +#endif + + /* 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); } - } while (ret > -1); + goto end; + } - shutdown(c->cli_sock, SHUT_RDWR); - close(c->cli_sock); - memset(c, 0, sizeof(rpc_cli_t)); - return (void*) (long)ret; + 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)); + array_Set(srv->srv_blob.clients, i, c); + c->cli_id = i; + c->cli_parent = srv; + } + + /* alloc empty buffer */ + 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); + 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); + } + + schedRead(TASK_ROOT(task), rxBLOB, c, c->cli_sock, NULL, 0); +end: + schedReadSelf(task); + return NULL; } -// ------------------------------------------------- +/* ------------------------------------------------------ */ /* - * rpc_srv_initBLOBServer() Init & create BLOB Server + * rpc_srv_initBLOBServer() - Init & create BLOB Server + * + * @srv = RPC server instance * @Port = Port for bind server, if Port == 0 default port is selected * @diskDir = Disk place for BLOB file objects * return: -1 == error or 0 bind and created BLOB server instance @@ -358,439 +862,431 @@ int rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, u_short Port, const char *diskDir) { int n = 1; - struct sockaddr_in sin; - struct sockaddr_in6 sin6; - if (!srv) { - rpc_SetErr(EINVAL, "Error:: Invalid parameters can`t init BLOB server ...\n"); + 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, "Warning:: Already started BLOB server!\n"); - return 0; - } - if (!Port) - Port = RPC_DEFPORT + 1; memset(&srv->srv_blob, 0, sizeof srv->srv_blob); if (access(diskDir, R_OK | W_OK) == -1) { LOGERR; return -1; } else - strlcpy(srv->srv_blob.dir, diskDir, UCHAR_MAX + 1); + 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; - if (srv->srv_server.cli_sa.sa_family == AF_INET) { - memcpy(&sin, &srv->srv_server.cli_sa, sizeof sin); - sin.sin_port = htons(Port); - memcpy(&srv->srv_blob.server.cli_sa, &sin, sizeof(struct sockaddr)); - } else { - memcpy(&sin6, &srv->srv_server.cli_sa, sizeof sin6); - sin6.sin6_port = htons(Port); - memcpy(&srv->srv_blob.server.cli_sa, &sin6, sizeof(struct sockaddr)); + + 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 = + htons(Port ? Port : ntohs(srv->srv_blob.server.cli_sa.sin.sin_port) + 1); + break; + case AF_INET6: + 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(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; } - srv->srv_blob.server.cli_sock = socket(srv->srv_server.cli_sa.sa_family, SOCK_STREAM, 0); + /* create BLOB server socket */ + srv->srv_blob.server.cli_sock = socket(srv->srv_server.cli_sa.sa.sa_family, SOCK_STREAM, 0); if (srv->srv_blob.server.cli_sock == -1) { LOGERR; + AIT_FREE_VAL(&srv->srv_blob.dir); return -1; } if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) { LOGERR; close(srv->srv_blob.server.cli_sock); + AIT_FREE_VAL(&srv->srv_blob.dir); return -1; } - if (bind(srv->srv_blob.server.cli_sock, &srv->srv_blob.server.cli_sa, - sizeof srv->srv_blob.server.cli_sa) == -1) { + n = srv->srv_netbuf; + if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) { LOGERR; close(srv->srv_blob.server.cli_sock); + AIT_FREE_VAL(&srv->srv_blob.dir); return -1; } - - srv->srv_blob.clients = calloc(srv->srv_numcli, sizeof(rpc_cli_t)); - if (!srv->srv_blob.clients) { + if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) { LOGERR; close(srv->srv_blob.server.cli_sock); + AIT_FREE_VAL(&srv->srv_blob.dir); return -1; + } + if (bind(srv->srv_blob.server.cli_sock, &srv->srv_blob.server.cli_sa.sa, + srv->srv_blob.server.cli_sa.sa.sa_len) == -1) { + LOGERR; + 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)); + fcntl(srv->srv_blob.server.cli_sock, F_SETFL, + fcntl(srv->srv_blob.server.cli_sock, F_GETFL) | O_NONBLOCK); - pthread_mutex_init(&srv->srv_blob.mtx, NULL); - pthread_mutex_lock(&srv->srv_mtx); - rpc_srv_registerCall(srv, NULL, CALL_BLOBSHUTDOWN, 0); - rpc_srv_registerCall(srv, NULL, CALL_BLOBCLIENTS, 0); - rpc_srv_registerCall(srv, NULL, CALL_BLOBVARS, 0); - rpc_srv_registerCall(srv, NULL, CALL_BLOBSTATE, 1); - pthread_mutex_unlock(&srv->srv_mtx); + /* allocate pool for concurent blob clients */ + srv->srv_blob.clients = array_Init(array_Size(srv->srv_clients)); + if (!srv->srv_blob.clients) { + rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError()); + close(srv->srv_blob.server.cli_sock); + AIT_FREE_VAL(&srv->srv_blob.dir); + return -1; + } - srv->srv_blob.state = enable; // enable BLOB + /* 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; + } + return 0; } /* - * rpc_srv_endBLOBServer() Destroy BLOB server, close all opened sockets and free resources + * rpc_srv_endBLOBServer() - Destroy BLOB server, close all opened sockets and free resources + * * @srv = RPC Server instance * return: none */ void rpc_srv_endBLOBServer(rpc_srv_t * __restrict srv) { - rpc_cli_t *c; - register int i; - rpc_blob_t *f; - - if (!srv) { - rpc_SetErr(EINVAL, "Error:: Can`t destroy server because parameter is null!\n"); + if (!srv) return; - } else - srv->srv_blob.state = disable; - 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; - for (i = 0, c = srv->srv_blob.clients; i < srv->srv_numcli && c; i++, c++) - if (c->cli_sa.sa_family) - shutdown(c->cli_sock, SHUT_RDWR); - close(srv->srv_blob.server.cli_sock); - - if (srv->srv_blob.clients) { - free(srv->srv_blob.clients); - srv->srv_blob.clients = NULL; - } - - pthread_mutex_lock(&srv->srv_blob.mtx); - 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); - - while (pthread_mutex_trylock(&srv->srv_blob.mtx) == EBUSY); - pthread_mutex_destroy(&srv->srv_blob.mtx); + schedEnd(&srv->srv_blob.root); } /* - * rpc_srv_execBLOBServer() 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_execBLOBServer(rpc_srv_t * __restrict srv) +rpc_srv_loopBLOBServer(rpc_srv_t * __restrict srv) { - socklen_t salen = sizeof(struct sockaddr); - register int i; rpc_cli_t *c; - fd_set fds; - int ret; - struct timeval tv = { DEF_RPC_TIMEOUT, 0 }; + register int i; + rpc_blob_t *b, *tmp; + struct timespec ts = { RPC_SCHED_POLLING, 0 }; - if (!srv || srv->srv_blob.state == disable) { - rpc_SetErr(EINVAL, "Error:: Invalid parameter can`t start BLOB server ...\n"); + if (!srv || srv->srv_kill) { + rpc_SetErr(EINVAL, "Invalid parameter can`t start BLOB server"); return -1; } - 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; } - while (!blob_Kill && !rpc_Kill) { - for (c = srv->srv_blob.clients, i = 0; i < srv->srv_numcli && c; i++, c++) - if (!c->cli_sa.sa_family) - break; - if (i >= srv->srv_numcli) { - usleep(1000000); - continue; - } + if (!schedSignal(srv->srv_blob.root, flushBLOB, srv, SIGFBLOB, NULL, 0)) { + /* disabled kqueue support in libaitsched */ + struct sigaction sa; - 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; + atomic_store_rel_ptr(&_glSigArg, (uintptr_t) srv); - c->cli_sock = accept(srv->srv_blob.server.cli_sock, &c->cli_sa, &salen); - if (c->cli_sock == -1) { - LOGERR; - continue; - } else - c->cli_parent = 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 (pthread_create(&c->cli_tid, NULL, rpc_srv_dispatchVars, c)) { - LOGERR; - continue; + 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; + } + + 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 = disable; + close(srv->srv_blob.server.cli_sock); + AIT_FREE_VAL(&srv->srv_blob.dir); return 0; } /* - * rpc_srv_initServer() Init & create RPC Server - * @regProgID = ProgramID for authentication & recognition - * @regProcID = ProcessID for authentication & recognition + * rpc_srv_initServer() - Init & create RPC Server + * + * @InstID = Instance for authentication & recognition * @concurentClients = Concurent clients at same time to this server - * @family = Family socket type, AF_INET or AF_INET6 - * @csHost = Host name or IP address for bind server, if NULL any address + * @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, - 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; - struct sockaddr_in sin; - struct sockaddr_in6 sin6; + rpc_srv_t *srv = NULL; + sockaddr_t sa = E_SOCKADDR_INIT; - if (!concurentClients || !regProgID || (family != AF_INET && family != AF_INET6)) { - rpc_SetErr(EINVAL, "Error:: Invalid parameters can`t init RPC server ...\n"); + if (!concurentClients || (proto < 0 || proto > SOCK_DGRAM)) { + rpc_SetErr(EINVAL, "Invalid parameters can`t init RPC server"); return NULL; } + if (!e_gethostbyname(csHost, Port, &sa)) + return NULL; if (!Port) Port = RPC_DEFPORT; - if (csHost) { - host = gethostbyname2(csHost, family); - if (!host) { - rpc_SetErr(h_errno, "Error:: %s\n", hstrerror(h_errno)); - return NULL; - } - } - switch (family) { - case AF_INET: - memset(&sin, 0, sizeof sin); - sin.sin_len = sizeof sin; - sin.sin_family = family; - sin.sin_port = htons(Port); - if (csHost) - memcpy(&sin.sin_addr, host->h_addr, host->h_length); - break; - case AF_INET6: - memset(&sin6, 0, sizeof sin6); - sin6.sin6_len = sizeof sin6; - sin6.sin6_family = family; - sin6.sin6_port = htons(Port); - if (csHost) - memcpy(&sin6.sin6_addr, host->h_addr, host->h_length); - break; - default: - rpc_SetErr(EINVAL, "Error:: Invalid parameters can`t start RPC server ...\n"); - return NULL; - } + if (!proto) + proto = SOCK_STREAM; + if (netBuf < RPC_MIN_BUFSIZ) + netBuf = BUFSIZ; + else + 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_numcli = concurentClients; + 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_tid = pthread_self(); srv->srv_server.cli_parent = srv; - if (family == AF_INET) - memcpy(&srv->srv_server.cli_sa, &sin, sizeof srv->srv_server.cli_sa); - else - memcpy(&srv->srv_server.cli_sa, &sin6, sizeof srv->srv_server.cli_sa); - srv->srv_server.cli_sock = socket(family, SOCK_STREAM, 0); + 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(srv->srv_server.cli_sa.sa.sa_family, srv->srv_proto, 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 (bind(srv->srv_server.cli_sock, &srv->srv_server.cli_sa, sizeof srv->srv_server.cli_sa) == -1) { + 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; } - - srv->srv_clients = calloc(srv->srv_numcli, sizeof(rpc_cli_t)); - if (!srv->srv_clients) { + 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; + 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, 0); - rpc_srv_registerCall(srv, NULL, CALL_SRVCALLS, 0); - rpc_srv_registerCall(srv, NULL, CALL_SRVSESSIONS, 0); 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_endServer() Destroy RPC server, close all opened sockets and free resources - * @srv = RPC Server instance + * rpc_srv_endServer() - Destroy RPC server, close all opened sockets and free resources + * + * @psrv = RPC Server instance * return: none */ void -rpc_srv_endServer(rpc_srv_t * __restrict srv) +rpc_srv_endServer(rpc_srv_t ** __restrict psrv) { - rpc_cli_t *c; - register int i; - rpc_func_t *f; - - if (!srv) { - rpc_SetErr(EINVAL, "Error:: Can`t destroy server because parameter is null!\n"); + if (!psrv || !*psrv) return; - } - rpc_srv_endBLOBServer(srv); + /* if send kill to blob server */ + rpc_srv_endBLOBServer(*psrv); - for (i = 0, c = srv->srv_clients; i < srv->srv_numcli && c; i++, c++) - if (c->cli_sa.sa_family) { - shutdown(c->cli_sock, SHUT_RDWR); - close(c->cli_sock); - } - close(srv->srv_server.cli_sock); + (*psrv)->srv_kill = 1; + sleep(RPC_SCHED_POLLING); - if (srv->srv_clients) { - free(srv->srv_clients); - srv->srv_clients = NULL; - srv->srv_numcli = 0; - } + schedEnd(&(*psrv)->srv_root); - pthread_mutex_lock(&srv->srv_mtx); - while ((f = srv->srv_funcs)) { - srv->srv_funcs = f->func_next; - free(f); - } - pthread_mutex_unlock(&srv->srv_mtx); - - while (pthread_mutex_trylock(&srv->srv_mtx) == EBUSY); - pthread_mutex_destroy(&srv->srv_mtx); - - free(srv); - srv = NULL; + pthread_mutex_destroy(&(*psrv)->srv_funcs.mtx); + e_free(*psrv); + *psrv = NULL; } /* - * rpc_srv_execServer() Execute Main server loop and wait for clients requests + * rpc_srv_loopServer() - Execute Main server loop and wait for clients requests + * * @srv = RPC Server instance * return: -1 error or 0 ok, infinite loop ... */ int -rpc_srv_execServer(rpc_srv_t * __restrict srv) +rpc_srv_loopServer(rpc_srv_t * __restrict srv) { - socklen_t salen = sizeof(struct sockaddr); - register int i; rpc_cli_t *c; - fd_set fds; - int ret; - struct timeval tv = { DEF_RPC_TIMEOUT, 0 }; + register int i; + rpc_func_t *f; + struct timespec ts = { RPC_SCHED_POLLING, 0 }; 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; } - if (listen(srv->srv_server.cli_sock, SOMAXCONN) == -1) { - LOGERR; + if (srv->srv_proto == SOCK_STREAM) + if (listen(srv->srv_server.cli_sock, array_Size(srv->srv_clients)) == -1) { + LOGERR; + return -1; + } + + 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; } - while (!rpc_Kill) { - for (c = srv->srv_clients, i = 0; i < srv->srv_numcli && c; i++, c++) - if (!c->cli_sa.sa_family) - break; - if (i >= srv->srv_numcli) { - usleep(1000000); - continue; - } + schedPolling(srv->srv_root, &ts, NULL); + /* main rpc loop */ + 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) { + 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, &salen); - if (c->cli_sock == -1) { - LOGERR; - continue; - } else - c->cli_parent = srv; + close(srv->srv_server.cli_sock); - if (pthread_create(&c->cli_tid, NULL, 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); return 0; } -// --------------------------------------------------------- /* * rpc_srv_execCall() Execute registered call from RPC server - * @call = Register RPC call + * + * @cli = RPC client * @rpc = IN RPC call structure - * @args = IN RPC call array of rpc values + * @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, - rpc_val_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; - if (!call || !rpc || !call->func_parent) { - rpc_SetErr(EINVAL, "Error:: Invalid parameter can`t exec call from RPC server ...\n"); + if (!cli || !rpc || !AIT_ADDR(&funcname)) { + rpc_SetErr(EINVAL, "Invalid parameter can`t exec function"); return -1; } - dl = dlopen((char*) (*call->func_file ? call->func_file : NULL), RTLD_NOW); - if (!dl) { - rpc_SetErr(ENOENT, "Error:: Can`t attach module %s!\n", dlerror()); - return -1; - } - - func = dlsym(dl, (char*) call->func_name); - if (func) - ret = func(call, rpc->call_argc, args); - else { - rpc_SetErr(ENOEXEC, "Error:: Can`t find function %s!\n", dlerror()); - ret = -1; - } - - dlclose(dl); - return ret; + func = AIT_GET_LIKE(&funcname, rpc_callback_t); + return func(cli, rpc, args); }