diff options
Diffstat (limited to 'usr.sbin/ypserv/yp_main.c')
| -rw-r--r-- | usr.sbin/ypserv/yp_main.c | 577 |
1 files changed, 0 insertions, 577 deletions
diff --git a/usr.sbin/ypserv/yp_main.c b/usr.sbin/ypserv/yp_main.c deleted file mode 100644 index ec39d1b..0000000 --- a/usr.sbin/ypserv/yp_main.c +++ /dev/null @@ -1,577 +0,0 @@ -/* - * Copyright (c) 1995 - * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by Bill Paul. - * 4. Neither the name of the author nor the names of any co-contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -/* - * ypserv startup function. - * We need out own main() since we have to do some additional work - * that rpcgen won't do for us. Most of this file was generated using - * rpcgen.new, and later modified. - */ - -#include <sys/types.h> -#include <sys/queue.h> -#include <sys/socket.h> -#include <sys/wait.h> -#include "yp.h" -#include <err.h> -#include <errno.h> -#include <memory.h> -#include <stdio.h> -#include <signal.h> -#include <stdarg.h> -#include <stdlib.h> /* getenv, exit */ -#include <string.h> /* strcmp */ -#include <syslog.h> -#include <unistd.h> -#ifdef __cplusplus -#include <sysent.h> /* getdtablesize, open */ -#endif /* __cplusplus */ -#include <netinet/in.h> -#include <netdb.h> -#include "yp_extern.h" -#include <netconfig.h> -#include <rpc/rpc.h> -#include <rpc/rpc_com.h> - -#ifndef SIG_PF -#define SIG_PF void(*)(int) -#endif - -#define _RPCSVC_CLOSEDOWN 120 -int _rpcpmstart; /* Started by a port monitor ? */ -static int _rpcfdtype; - /* Whether Stream or Datagram ? */ -static int _rpcaf; -static int _rpcfd; - - /* States a server can be in wrt request */ - -#define _IDLE 0 -#define _SERVED 1 -#define _SERVING 2 - -extern void ypprog_1(struct svc_req *, SVCXPRT *); -extern void ypprog_2(struct svc_req *, SVCXPRT *); -extern int _rpc_dtablesize(void); -extern int _rpcsvcstate; /* Set when a request is serviced */ -char *progname = "ypserv"; -char *yp_dir = _PATH_YP; -/*int debug = 0;*/ -int do_dns = 0; -int resfd; - -struct socklistent { - int sle_sock; - struct sockaddr_storage sle_ss; - SLIST_ENTRY(socklistent) sle_next; -}; -static SLIST_HEAD(, socklistent) sle_head = - SLIST_HEAD_INITIALIZER(sle_head); - -struct bindaddrlistent { - const char *ble_hostname; - SLIST_ENTRY(bindaddrlistent) ble_next; -}; -static SLIST_HEAD(, bindaddrlistent) ble_head = - SLIST_HEAD_INITIALIZER(ble_head); - -static char *servname = "0"; - -static -void _msgout(char* msg, ...) -{ - va_list ap; - - va_start(ap, msg); - if (debug) { - if (_rpcpmstart) - vsyslog(LOG_ERR, msg, ap); - else - vwarnx(msg, ap); - } else - vsyslog(LOG_ERR, msg, ap); - va_end(ap); -} - -pid_t yp_pid; - -static void -yp_svc_run(void) -{ -#ifdef FD_SETSIZE - fd_set readfds; -#else - int readfds; -#endif /* def FD_SETSIZE */ - int fd_setsize = _rpc_dtablesize(); - struct timeval timeout; - - /* Establish the identity of the parent ypserv process. */ - yp_pid = getpid(); - - for (;;) { -#ifdef FD_SETSIZE - readfds = svc_fdset; -#else - readfds = svc_fds; -#endif /* def FD_SETSIZE */ - - FD_SET(resfd, &readfds); - - timeout.tv_sec = RESOLVER_TIMEOUT; - timeout.tv_usec = 0; - switch (select(fd_setsize, &readfds, NULL, NULL, - &timeout)) { - case -1: - if (errno == EINTR) { - continue; - } - warn("svc_run: - select failed"); - return; - case 0: - if (getpid() == yp_pid) - yp_prune_dnsq(); - break; - default: - if (getpid() == yp_pid) { - if (FD_ISSET(resfd, &readfds)) { - yp_run_dnsq(); - FD_CLR(resfd, &readfds); - } - svc_getreqset(&readfds); - } - } - if (yp_pid != getpid()) - _exit(0); - } -} - -static void -unregister(void) -{ - (void)svc_unreg(YPPROG, YPVERS); - (void)svc_unreg(YPPROG, YPOLDVERS); -} - -static void -reaper(int sig) -{ - int status; - int saved_errno; - - saved_errno = errno; - - if (sig == SIGHUP) { - load_securenets(); -#ifdef DB_CACHE - yp_flush_all(); -#endif - errno = saved_errno; - return; - } - - if (sig == SIGCHLD) { - while (wait3(&status, WNOHANG, NULL) > 0) - children--; - } else { - unregister(); - exit(0); - } - errno = saved_errno; - return; -} - -static void -usage(void) -{ - fprintf(stderr, "usage: ypserv [-h] [-d] [-n] [-p path] [-P port]\n"); - exit(1); -} - -static void -closedown(int sig) -{ - if (_rpcsvcstate == _IDLE) { - extern fd_set svc_fdset; - static int size; - int i, openfd; - - if (_rpcfdtype == SOCK_DGRAM) { - unregister(); - exit(0); - } - if (size == 0) { - size = getdtablesize(); - } - for (i = 0, openfd = 0; i < size && openfd < 2; i++) - if (FD_ISSET(i, &svc_fdset)) - openfd++; - if (openfd <= 1) { - unregister(); - exit(0); - } - } - if (_rpcsvcstate == _SERVED) - _rpcsvcstate = _IDLE; - - (void) signal(SIGALRM, (SIG_PF) closedown); - (void) alarm(_RPCSVC_CLOSEDOWN/2); -} - -static int -create_service(const int sock, const struct netconfig *nconf, - const struct __rpc_sockinfo *si) -{ - int error; - - SVCXPRT *transp; - struct addrinfo hints, *res, *res0; - struct socklistent *slep; - struct bindaddrlistent *blep; - struct netbuf svcaddr; - - SLIST_INIT(&sle_head); - memset(&hints, 0, sizeof(hints)); - memset(&svcaddr, 0, sizeof(svcaddr)); - - hints.ai_family = si->si_af; - hints.ai_socktype = si->si_socktype; - hints.ai_protocol = si->si_proto; - - /* - * Build socketlist from bindaddrlist. - */ - if (sock == RPC_ANYFD) { - SLIST_FOREACH(blep, &ble_head, ble_next) { - if (blep->ble_hostname == NULL) - hints.ai_flags = AI_PASSIVE; - else - hints.ai_flags = 0; - error = getaddrinfo(blep->ble_hostname, servname, - &hints, &res0); - if (error) { - _msgout("getaddrinfo(): %s", - gai_strerror(error)); - return -1; - } - for (res = res0; res; res = res->ai_next) { - int s; - - s = __rpc_nconf2fd(nconf); - if (s < 0) { - if (errno == EPROTONOSUPPORT) - _msgout("unsupported" - " transport: %s", - nconf->nc_netid); - else - _msgout("cannot create" - " %s socket: %s", - nconf->nc_netid, - strerror(errno)); - freeaddrinfo(res0); - return -1; - } - if (bindresvport_sa(s, res->ai_addr) == -1) { - if ((errno != EPERM) || - (bind(s, res->ai_addr, - res->ai_addrlen) == -1)) { - _msgout("cannot bind " - "%s socket: %s", - nconf->nc_netid, - strerror(errno)); - freeaddrinfo(res0); - close(sock); - return -1; - } - } - if (nconf->nc_semantics != NC_TPI_CLTS) - listen(s, SOMAXCONN); - - slep = malloc(sizeof(*slep)); - if (slep == NULL) { - _msgout("malloc failed: %s", - strerror(errno)); - freeaddrinfo(res0); - close(s); - return -1; - } - memset(slep, 0, sizeof(*slep)); - memcpy(&slep->sle_ss, - (struct sockaddr *)(res->ai_addr), - sizeof(res->ai_addr)); - slep->sle_sock = s; - SLIST_INSERT_HEAD(&sle_head, slep, sle_next); - - /* - * If servname == "0", redefine it by using - * the bound socket. - */ - if (strncmp("0", servname, 1) == 0) { - struct sockaddr *sap; - socklen_t slen; - char *sname; - - sname = malloc(NI_MAXSERV); - if (sname == NULL) { - _msgout("malloc(): %s", - strerror(errno)); - freeaddrinfo(res0); - close(s); - return -1; - } - memset(sname, 0, NI_MAXSERV); - - sap = (struct sockaddr *)&slep->sle_ss; - slen = sizeof(*sap); - error = getsockname(s, sap, &slen); - if (error) { - _msgout("getsockname(): %s", - strerror(errno)); - freeaddrinfo(res0); - close(s); - return -1; - } - error = getnameinfo(sap, slen, - NULL, 0, - sname, NI_MAXSERV, - NI_NUMERICHOST | NI_NUMERICSERV); - if (error) { - _msgout("getnameinfo(): %s", - strerror(errno)); - freeaddrinfo(res0); - close(s); - return -1; - } - servname = sname; - } - } - freeaddrinfo(res0); - } - } else { - slep = malloc(sizeof(*slep)); - if (slep == NULL) { - _msgout("malloc failed: %s", strerror(errno)); - return -1; - } - memset(slep, 0, sizeof(*slep)); - slep->sle_sock = sock; - SLIST_INSERT_HEAD(&sle_head, slep, sle_next); - } - - /* - * Traverse socketlist and create rpc service handles for each socket. - */ - SLIST_FOREACH(slep, &sle_head, sle_next) { - if (nconf->nc_semantics == NC_TPI_CLTS) - transp = svc_dg_create(slep->sle_sock, 0, 0); - else - transp = svc_vc_create(slep->sle_sock, RPC_MAXDATASIZE, - RPC_MAXDATASIZE); - if (transp == NULL) { - _msgout("unable to create service: %s", - nconf->nc_netid); - continue; - } - if (!svc_reg(transp, YPPROG, YPOLDVERS, ypprog_1, NULL)) { - svc_destroy(transp); - close(slep->sle_sock); - _msgout("unable to register (YPPROG, YPOLDVERS, %s):" - " %s", nconf->nc_netid, strerror(errno)); - continue; - } - if (!svc_reg(transp, YPPROG, YPVERS, ypprog_2, NULL)) { - svc_destroy(transp); - close(slep->sle_sock); - _msgout("unable to register (YPPROG, YPVERS, %s): %s", - nconf->nc_netid, strerror(errno)); - continue; - } - } - while(!(SLIST_EMPTY(&sle_head))) - SLIST_REMOVE_HEAD(&sle_head, sle_next); - - /* - * Register RPC service to rpcbind by using AI_PASSIVE address. - */ - hints.ai_flags = AI_PASSIVE; - error = getaddrinfo(NULL, servname, &hints, &res0); - if (error) { - _msgout("getaddrinfo(): %s", gai_strerror(error)); - return -1; - } - svcaddr.buf = res0->ai_addr; - svcaddr.len = res0->ai_addrlen; - - if (si->si_af == AF_INET) { - /* XXX: ignore error intentionally */ - rpcb_set(YPPROG, YPOLDVERS, nconf, &svcaddr); - } - /* XXX: ignore error intentionally */ - rpcb_set(YPPROG, YPVERS, nconf, &svcaddr); - - freeaddrinfo(res0); - return 0; -} - -int -main(int argc, char *argv[]) -{ - int ch; - int error; - int ntrans; - - void *nc_handle; - struct netconfig *nconf; - struct __rpc_sockinfo si; - struct bindaddrlistent *blep; - - memset(&si, 0, sizeof(si)); - SLIST_INIT(&ble_head); - - while ((ch = getopt(argc, argv, "dh:np:P:")) != -1) { - switch (ch) { - case 'd': - debug = ypdb_debug = 1; - break; - case 'h': - blep = malloc(sizeof(*blep)); - if (blep == NULL) - err(1, "malloc() failed: -h %s", optarg); - blep->ble_hostname = optarg; - SLIST_INSERT_HEAD(&ble_head, blep, ble_next); - break; - case 'n': - do_dns = 1; - break; - case 'p': - yp_dir = optarg; - break; - case 'P': - servname = optarg; - break; - default: - usage(); - } - } - /* - * Add "anyaddr" entry if no -h is specified. - */ - if (SLIST_EMPTY(&ble_head)) { - blep = malloc(sizeof(*blep)); - if (blep == NULL) - err(1, "malloc() failed"); - memset(blep, 0, sizeof(*blep)); - SLIST_INSERT_HEAD(&ble_head, blep, ble_next); - } - - load_securenets(); - yp_init_resolver(); -#ifdef DB_CACHE - yp_init_dbs(); -#endif - nc_handle = setnetconfig(); - if (nc_handle == NULL) - err(1, "cannot read %s", NETCONFIG); - if (__rpc_fd2sockinfo(0, &si) != 0) { - /* invoked from inetd */ - _rpcpmstart = 1; - _rpcfdtype = si.si_socktype; - _rpcaf = si.si_af; - _rpcfd = 0; - openlog("ypserv", LOG_PID, LOG_DAEMON); - } else { - /* standalone mode */ - if (!debug) { - if (daemon(0,0)) { - err(1,"cannot fork"); - } - openlog("ypserv", LOG_PID, LOG_DAEMON); - } - _rpcpmstart = 0; - _rpcaf = AF_INET; - _rpcfd = RPC_ANYFD; - unregister(); - } - - /* - * Create RPC service for each transport. - */ - ntrans = 0; - while((nconf = getnetconfig(nc_handle))) { - if ((nconf->nc_flag & NC_VISIBLE)) { - if (__rpc_nconf2sockinfo(nconf, &si) == 0) { - _msgout("cannot get information for %s. " - "Ignored.", nconf->nc_netid); - continue; - } - if (_rpcpmstart) { - if (si.si_socktype != _rpcfdtype || - si.si_af != _rpcaf) - continue; - } else if (si.si_af != _rpcaf) - continue; - error = create_service(_rpcfd, nconf, &si); - if (error) { - endnetconfig(nc_handle); - exit(1); - } - ntrans++; - } - } - endnetconfig(nc_handle); - while(!(SLIST_EMPTY(&ble_head))) - SLIST_REMOVE_HEAD(&ble_head, ble_next); - if (ntrans == 0) { - _msgout("no transport is available. Aborted."); - exit(1); - } - if (_rpcpmstart) { - (void) signal(SIGALRM, (SIG_PF) closedown); - (void) alarm(_RPCSVC_CLOSEDOWN/2); - } -/* - * Make sure SIGPIPE doesn't blow us away while servicing TCP - * connections. - */ - (void) signal(SIGPIPE, SIG_IGN); - (void) signal(SIGCHLD, (SIG_PF) reaper); - (void) signal(SIGTERM, (SIG_PF) reaper); - (void) signal(SIGINT, (SIG_PF) reaper); - (void) signal(SIGHUP, (SIG_PF) reaper); - yp_svc_run(); - _msgout("svc_run returned"); - exit(1); - /* NOTREACHED */ -} |
