504 lines
11 KiB
C
504 lines
11 KiB
C
/* $NetBSD: amq_subr.c,v 1.1.1.1 2000/06/07 00:52:22 dogcow Exp $ */
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/*
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* Copyright (c) 1997-2000 Erez Zadok
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* Copyright (c) 1990 Jan-Simon Pendry
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* Copyright (c) 1990 Imperial College of Science, Technology & Medicine
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Jan-Simon Pendry at Imperial College, London.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgment:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* %W% (Berkeley) %G%
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*
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* Id: amq_subr.c,v 1.6 2000/01/12 16:44:16 ezk Exp
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*
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*/
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/*
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* Auxiliary routines for amq tool
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*/
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif /* HAVE_CONFIG_H */
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#include <am_defs.h>
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#include <amd.h>
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/* forward definitions */
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bool_t xdr_amq_mount_tree_node(XDR *xdrs, amq_mount_tree *objp);
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bool_t xdr_amq_mount_subtree(XDR *xdrs, amq_mount_tree *objp);
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voidp
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amqproc_null_1_svc(voidp argp, struct svc_req *rqstp)
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{
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static char res;
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return (voidp) &res;
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}
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/*
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* Return a sub-tree of mounts
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*/
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amq_mount_tree_p *
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amqproc_mnttree_1_svc(voidp argp, struct svc_req *rqstp)
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{
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static am_node *mp;
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mp = find_ap(*(char **) argp);
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return (amq_mount_tree_p *) ∓
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}
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/*
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* Unmount a single node
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*/
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voidp
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amqproc_umnt_1_svc(voidp argp, struct svc_req *rqstp)
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{
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static char res;
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am_node *mp = find_ap(*(char **) argp);
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if (mp)
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forcibly_timeout_mp(mp);
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return (voidp) &res;
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}
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/*
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* Return global statistics
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*/
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amq_mount_stats *
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amqproc_stats_1_svc(voidp argp, struct svc_req *rqstp)
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{
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return (amq_mount_stats *) &amd_stats;
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}
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/*
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* Return the entire tree of mount nodes
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*/
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amq_mount_tree_list *
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amqproc_export_1_svc(voidp argp, struct svc_req *rqstp)
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{
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static amq_mount_tree_list aml;
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aml.amq_mount_tree_list_val = (amq_mount_tree_p *) &exported_ap[0];
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aml.amq_mount_tree_list_len = 1; /* XXX */
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return &aml;
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}
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int *
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amqproc_setopt_1_svc(voidp argp, struct svc_req *rqstp)
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{
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static int rc;
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amq_setopt *opt = (amq_setopt *) argp;
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rc = 0;
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switch (opt->as_opt) {
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case AMOPT_DEBUG:
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#ifdef DEBUG
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if (debug_option(opt->as_str))
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#endif /* DEBUG */
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rc = EINVAL;
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break;
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case AMOPT_LOGFILE:
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if (gopt.logfile && opt->as_str
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&& STREQ(gopt.logfile, opt->as_str)) {
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if (switch_to_logfile(opt->as_str, orig_umask))
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rc = EINVAL;
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} else {
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rc = EACCES;
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}
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break;
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case AMOPT_XLOG:
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if (switch_option(opt->as_str))
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rc = EINVAL;
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break;
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case AMOPT_FLUSHMAPC:
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if (amd_state == Run) {
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plog(XLOG_INFO, "amq says flush cache");
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do_mapc_reload = 0;
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flush_nfs_fhandle_cache((fserver *) 0);
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flush_srvr_nfs_cache();
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}
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break;
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}
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return &rc;
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}
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amq_mount_info_list *
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amqproc_getmntfs_1_svc(voidp argp, struct svc_req *rqstp)
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{
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return (amq_mount_info_list *) &mfhead; /* XXX */
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}
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#ifdef ENABLE_AMQ_MOUNT
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/*
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* This is code that is vulnerable to IP spoofing attacks. Unless you
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* absolutely need it, I suggest you do not enable it
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* (using configure --enable-amq-mount)
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*/
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static int
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ok_security(struct svc_req *rqstp)
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{
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struct sockaddr_in *sin = (struct sockaddr_in *) NULL;
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if ((sin = amu_svc_getcaller(rqstp->rq_xprt)) == NULL) {
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plog(XLOG_ERROR, "amu_svc_getcaller returned NULL");
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return(0); /* assume security is therefore not OK */
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}
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if (ntohs(sin->sin_port) >= IPPORT_RESERVED ||
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!(sin->sin_addr.s_addr == htonl(0x7f000001) ||
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sin->sin_addr.s_addr == myipaddr.s_addr)) {
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char dq[20];
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plog(XLOG_INFO, "AMQ request from %s.%d DENIED",
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inet_dquad(dq, sin->sin_addr.s_addr),
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ntohs(sin->sin_port));
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return (0);
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}
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return (1);
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}
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int *
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amqproc_mount_1_svc(voidp argp, struct svc_req *rqstp)
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{
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static int rc = EINVAL;
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char s[AMQ_STRLEN];
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char *cp;
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char dq[20];
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struct sockaddr_in *sin;
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if ((sin = amu_svc_getcaller(rqstp->rq_xprt)) == NULL) {
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plog(XLOG_ERROR, "amu_svc_getcaller returned NULL");
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return &rc;
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}
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strncpy(s, *(amq_string *) argp, AMQ_STRLEN-1);
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s[AMQ_STRLEN-1] = '\0'; /* null terminate, to be sure */
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plog(XLOG_ERROR,
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"amq requested mount of %s from %s.%d",
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s, inet_dquad(dq, sin->sin_addr.s_addr),
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ntohs(sin->sin_port));
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/*
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* Minimalist security check.
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*/
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if (!ok_security(rqstp)) {
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rc = EACCES;
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return &rc;
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}
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/*
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* Find end of key
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*/
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for (cp = (char *) s; *cp && (!isascii(*cp) || !isspace(*cp)); cp++) ;
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if (!*cp) {
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plog(XLOG_INFO, "amqproc_mount: Invalid arguments");
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rc = EINVAL;
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return &rc;
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}
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*cp++ = '\0';
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/*
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* Find start of value
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*/
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while (*cp && isascii(*cp) && isspace(*cp))
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cp++;
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root_newmap(s, cp, (char *) 0, NULL);
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rc = mount_auto_node(s, (voidp) root_node);
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if (rc < 0)
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return 0;
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return &rc;
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}
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#endif /* ENABLE_AMQ_MOUNT */
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amq_string *
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amqproc_getvers_1_svc(voidp argp, struct svc_req *rqstp)
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{
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static amq_string res;
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res = get_version_string();
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return &res;
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}
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/* get PID of remote amd */
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int *
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amqproc_getpid_1_svc(voidp argp, struct svc_req *rqstp)
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{
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static int res;
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res = getpid();
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return &res;
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}
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/*
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* XDR routines.
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*/
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bool_t
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xdr_amq_setopt(XDR *xdrs, amq_setopt *objp)
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{
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if (!xdr_enum(xdrs, (enum_t *) & objp->as_opt)) {
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return (FALSE);
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}
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if (!xdr_string(xdrs, &objp->as_str, AMQ_STRLEN)) {
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return (FALSE);
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}
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return (TRUE);
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}
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/*
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* More XDR routines - Should be used for OUTPUT ONLY.
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*/
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bool_t
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xdr_amq_mount_tree_node(XDR *xdrs, amq_mount_tree *objp)
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{
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am_node *mp = (am_node *) objp;
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long mtime;
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if (!xdr_amq_string(xdrs, &mp->am_mnt->mf_info)) {
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return (FALSE);
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}
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if (!xdr_amq_string(xdrs, &mp->am_path)) {
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return (FALSE);
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}
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if (!xdr_amq_string(xdrs, mp->am_link ? &mp->am_link : &mp->am_mnt->mf_mount)) {
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return (FALSE);
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}
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if (!xdr_amq_string(xdrs, &mp->am_mnt->mf_ops->fs_type)) {
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return (FALSE);
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}
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mtime = mp->am_stats.s_mtime;
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if (!xdr_long(xdrs, &mtime)) {
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return (FALSE);
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}
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if (!xdr_u_short(xdrs, &mp->am_stats.s_uid)) {
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return (FALSE);
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}
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if (!xdr_int(xdrs, &mp->am_stats.s_getattr)) {
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return (FALSE);
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}
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if (!xdr_int(xdrs, &mp->am_stats.s_lookup)) {
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return (FALSE);
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}
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if (!xdr_int(xdrs, &mp->am_stats.s_readdir)) {
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return (FALSE);
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}
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if (!xdr_int(xdrs, &mp->am_stats.s_readlink)) {
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return (FALSE);
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}
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if (!xdr_int(xdrs, &mp->am_stats.s_statfs)) {
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return (FALSE);
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}
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return (TRUE);
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}
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bool_t
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xdr_amq_mount_subtree(XDR *xdrs, amq_mount_tree *objp)
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{
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am_node *mp = (am_node *) objp;
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if (!xdr_amq_mount_tree_node(xdrs, objp)) {
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return (FALSE);
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}
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if (!xdr_pointer(xdrs, (char **) &mp->am_osib, sizeof(amq_mount_tree), (XDRPROC_T_TYPE) xdr_amq_mount_subtree)) {
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return (FALSE);
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}
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if (!xdr_pointer(xdrs, (char **) &mp->am_child, sizeof(amq_mount_tree), (XDRPROC_T_TYPE) xdr_amq_mount_subtree)) {
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return (FALSE);
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}
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return (TRUE);
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}
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bool_t
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xdr_amq_mount_tree(XDR *xdrs, amq_mount_tree *objp)
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{
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am_node *mp = (am_node *) objp;
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am_node *mnil = 0;
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if (!xdr_amq_mount_tree_node(xdrs, objp)) {
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return (FALSE);
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}
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if (!xdr_pointer(xdrs, (char **) &mnil, sizeof(amq_mount_tree), (XDRPROC_T_TYPE) xdr_amq_mount_subtree)) {
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return (FALSE);
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}
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if (!xdr_pointer(xdrs, (char **) &mp->am_child, sizeof(amq_mount_tree), (XDRPROC_T_TYPE) xdr_amq_mount_subtree)) {
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return (FALSE);
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}
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return (TRUE);
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}
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bool_t
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xdr_amq_mount_tree_p(XDR *xdrs, amq_mount_tree_p *objp)
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{
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if (!xdr_pointer(xdrs, (char **) objp, sizeof(amq_mount_tree), (XDRPROC_T_TYPE) xdr_amq_mount_tree)) {
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return (FALSE);
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}
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return (TRUE);
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}
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bool_t
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xdr_amq_mount_stats(XDR *xdrs, amq_mount_stats *objp)
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{
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if (!xdr_int(xdrs, &objp->as_drops)) {
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return (FALSE);
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}
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if (!xdr_int(xdrs, &objp->as_stale)) {
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return (FALSE);
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}
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if (!xdr_int(xdrs, &objp->as_mok)) {
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return (FALSE);
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}
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if (!xdr_int(xdrs, &objp->as_merr)) {
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return (FALSE);
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}
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if (!xdr_int(xdrs, &objp->as_uerr)) {
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return (FALSE);
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}
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return (TRUE);
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}
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bool_t
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xdr_amq_mount_tree_list(XDR *xdrs, amq_mount_tree_list *objp)
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{
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if (!xdr_array(xdrs,
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(char **) &objp->amq_mount_tree_list_val,
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(u_int *) &objp->amq_mount_tree_list_len,
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~0,
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sizeof(amq_mount_tree_p),
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(XDRPROC_T_TYPE) xdr_amq_mount_tree_p)) {
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return (FALSE);
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}
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return (TRUE);
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}
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/*
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* Compute length of list
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*/
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bool_t
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xdr_amq_mount_info_qelem(XDR *xdrs, qelem *qhead)
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{
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mntfs *mf;
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u_int len = 0;
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for (mf = AM_LAST(mntfs, qhead); mf != HEAD(mntfs, qhead); mf = PREV(mntfs, mf)) {
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if (!(mf->mf_ops->fs_flags & FS_AMQINFO))
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continue;
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len++;
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}
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xdr_u_int(xdrs, &len);
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/*
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* Send individual data items
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*/
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for (mf = AM_LAST(mntfs, qhead); mf != HEAD(mntfs, qhead); mf = PREV(mntfs, mf)) {
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int up;
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if (!(mf->mf_ops->fs_flags & FS_AMQINFO))
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continue;
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if (!xdr_amq_string(xdrs, &mf->mf_ops->fs_type)) {
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return (FALSE);
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}
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if (!xdr_amq_string(xdrs, &mf->mf_mount)) {
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return (FALSE);
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}
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if (!xdr_amq_string(xdrs, &mf->mf_info)) {
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return (FALSE);
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}
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if (!xdr_amq_string(xdrs, &mf->mf_server->fs_host)) {
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return (FALSE);
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}
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if (!xdr_int(xdrs, &mf->mf_error)) {
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return (FALSE);
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}
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if (!xdr_int(xdrs, &mf->mf_refc)) {
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return (FALSE);
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}
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if (mf->mf_server->fs_flags & FSF_ERROR)
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up = 0;
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else
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switch (mf->mf_server->fs_flags & (FSF_DOWN | FSF_VALID)) {
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case FSF_DOWN | FSF_VALID:
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up = 0;
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break;
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case FSF_VALID:
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up = 1;
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break;
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default:
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up = -1;
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break;
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}
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if (!xdr_int(xdrs, &up)) {
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return (FALSE);
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}
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}
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return (TRUE);
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}
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bool_t
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xdr_pri_free(XDRPROC_T_TYPE xdr_args, caddr_t args_ptr)
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{
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XDR xdr;
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xdr.x_op = XDR_FREE;
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return ((*xdr_args) (&xdr, (caddr_t *) args_ptr));
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}
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