diff options
Diffstat (limited to 'contrib/netbsd-tests/fs/nfs/nfsservice/rpcbind/check_bound.c')
| -rw-r--r-- | contrib/netbsd-tests/fs/nfs/nfsservice/rpcbind/check_bound.c | 231 |
1 files changed, 231 insertions, 0 deletions
diff --git a/contrib/netbsd-tests/fs/nfs/nfsservice/rpcbind/check_bound.c b/contrib/netbsd-tests/fs/nfs/nfsservice/rpcbind/check_bound.c new file mode 100644 index 000000000000..2ea7c31d16ca --- /dev/null +++ b/contrib/netbsd-tests/fs/nfs/nfsservice/rpcbind/check_bound.c @@ -0,0 +1,231 @@ +/* $NetBSD: check_bound.c,v 1.1 2010/07/26 15:53:00 pooka Exp $ */ + +/* + * Sun RPC is a product of Sun Microsystems, Inc. and is provided for + * unrestricted use provided that this legend is included on all tape + * media and as a part of the software program in whole or part. Users + * may copy or modify Sun RPC without charge, but are not authorized + * to license or distribute it to anyone else except as part of a product or + * program developed by the user. + * + * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE + * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR + * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. + * + * Sun RPC is provided with no support and without any obligation on the + * part of Sun Microsystems, Inc. to assist in its use, correction, + * modification or enhancement. + * + * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE + * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC + * OR ANY PART THEREOF. + * + * In no event will Sun Microsystems, Inc. be liable for any lost revenue + * or profits or other special, indirect and consequential damages, even if + * Sun has been advised of the possibility of such damages. + * + * Sun Microsystems, Inc. + * 2550 Garcia Avenue + * Mountain View, California 94043 + */ +/* + * Copyright (c) 1986 - 1991 by Sun Microsystems, Inc. + */ + +/* #ident "@(#)check_bound.c 1.15 93/07/05 SMI" */ + +#if 0 +#ifndef lint +static char sccsid[] = "@(#)check_bound.c 1.11 89/04/21 Copyr 1989 Sun Micro"; +#endif +#endif + +/* + * check_bound.c + * Checks to see whether the program is still bound to the + * claimed address and returns the univeral merged address + * + */ + +#include <sys/types.h> +#include <sys/socket.h> +#include <rpc/rpc.h> +#include <stdio.h> +#include <netconfig.h> +#include <syslog.h> +#include <string.h> +#include <unistd.h> +#include <stdlib.h> + +#include <rump/rump.h> +#include <rump/rump_syscalls.h> + +#include "rpcbind.h" + +struct fdlist { + int fd; + struct netconfig *nconf; + struct fdlist *next; + int check_binding; +}; + +static struct fdlist *fdhead; /* Link list of the check fd's */ +static struct fdlist *fdtail; +static const char emptystring[] = ""; + +static bool_t check_bound(struct fdlist *, const char *uaddr); + +/* + * Returns 1 if the given address is bound for the given addr & transport + * For all error cases, we assume that the address is bound + * Returns 0 for success. + */ +static bool_t +check_bound(struct fdlist *fdl, const char *uaddr) +{ + int fd; + struct netbuf *na; + int ans; + + if (fdl->check_binding == FALSE) + return (TRUE); + + na = uaddr2taddr(fdl->nconf, uaddr); + if (!na) + return (TRUE); /* punt, should never happen */ + + fd = __rpc_nconf2fd(fdl->nconf); + if (fd < 0) { + free(na); + return (TRUE); + } + + ans = bind(fd, (struct sockaddr *)na->buf, na->len); + + rump_sys_close(fd); + free(na); + + return (ans == 0 ? FALSE : TRUE); +} + +int +add_bndlist(struct netconfig *nconf, struct netbuf *baddr) +{ + struct fdlist *fdl; + struct netconfig *newnconf; + + newnconf = getnetconfigent(nconf->nc_netid); + if (newnconf == NULL) + return (-1); + fdl = (struct fdlist *)malloc((u_int)sizeof (struct fdlist)); + if (fdl == NULL) { + freenetconfigent(newnconf); + syslog(LOG_ERR, "no memory!"); + return (-1); + } + fdl->nconf = newnconf; + fdl->next = NULL; + if (fdhead == NULL) { + fdhead = fdl; + fdtail = fdl; + } else { + fdtail->next = fdl; + fdtail = fdl; + } + /* XXX no bound checking for now */ + fdl->check_binding = FALSE; + + return 0; +} + +bool_t +is_bound(const char *netid, const char *uaddr) +{ + struct fdlist *fdl; + + for (fdl = fdhead; fdl; fdl = fdl->next) + if (strcmp(fdl->nconf->nc_netid, netid) == 0) + break; + if (fdl == NULL) + return (TRUE); + return (check_bound(fdl, uaddr)); +} + +/* + * Returns NULL if there was some system error. + * Returns "" if the address was not bound, i.e the server crashed. + * Returns the merged address otherwise. + */ +char * +mergeaddr(SVCXPRT *xprt, char *netid, char *uaddr, char *saddr) +{ + struct fdlist *fdl; + char *c_uaddr, *s_uaddr, *m_uaddr, *allocated_uaddr = NULL; + + for (fdl = fdhead; fdl; fdl = fdl->next) + if (strcmp(fdl->nconf->nc_netid, netid) == 0) + break; + if (fdl == NULL) + return (NULL); + if (check_bound(fdl, uaddr) == FALSE) + /* that server died */ + return strdup(emptystring); + /* + * If saddr is not NULL, the remote client may have included the + * address by which it contacted us. Use that for the "client" uaddr, + * otherwise use the info from the SVCXPRT. + */ + if (saddr != NULL) { + c_uaddr = saddr; + } else { + c_uaddr = taddr2uaddr(fdl->nconf, svc_getrpccaller(xprt)); + if (c_uaddr == NULL) { + syslog(LOG_ERR, "taddr2uaddr failed for %s", + fdl->nconf->nc_netid); + return (NULL); + } + allocated_uaddr = c_uaddr; + } + +#ifdef RPCBIND_DEBUG + if (debugging) { + if (saddr == NULL) { + fprintf(stderr, "mergeaddr: client uaddr = %s\n", + c_uaddr); + } else { + fprintf(stderr, "mergeaddr: contact uaddr = %s\n", + c_uaddr); + } + } +#endif + s_uaddr = uaddr; + /* + * This is all we should need for IP 4 and 6 + */ + m_uaddr = addrmerge(svc_getrpccaller(xprt), s_uaddr, c_uaddr, netid); +#ifdef RPCBIND_DEBUG + if (debugging) + fprintf(stderr, "mergeaddr: uaddr = %s, merged uaddr = %s\n", + uaddr, m_uaddr); +#endif + if (allocated_uaddr != NULL) + free(allocated_uaddr); + return (m_uaddr); +} + +/* + * Returns a netconf structure from its internal list. This + * structure should not be freed. + */ +struct netconfig * +rpcbind_get_conf(const char *netid) +{ + struct fdlist *fdl; + + for (fdl = fdhead; fdl; fdl = fdl->next) + if (strcmp(fdl->nconf->nc_netid, netid) == 0) + break; + if (fdl == NULL) + return (NULL); + return (fdl->nconf); +} |