/*
* Copyright (c) 1999, 2000, 2001 Boris Popov
* 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 Boris Popov.
* 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 THE AUTHOR 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 THE AUTHOR 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.
*
* $FreeBSD$
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/sysproto.h>
#include <sys/sysent.h>
#include <sys/proc.h>
#include <sys/kernel.h>
#include <sys/sysctl.h>
#include <sys/malloc.h>
#include <sys/uio.h>
#include <netncp/ncp.h>
#include <netncp/ncp_conn.h>
#include <netncp/ncp_subr.h>
#include <netncp/ncp_ncp.h>
#include <netncp/ncp_user.h>
#include <netncp/ncp_rq.h>
#include <netncp/ncp_nls.h>
int ncp_version = NCP_VERSION;
static int ncp_sysent;
SYSCTL_NODE(_net, OID_AUTO, ncp, CTLFLAG_RW, NULL, "NetWare requester");
SYSCTL_INT(_net_ncp, OID_AUTO, sysent, CTLFLAG_RD, &ncp_sysent, 0, "");
SYSCTL_INT(_net_ncp, OID_AUTO, version, CTLFLAG_RD, &ncp_version, 0, "");
MODULE_VERSION(ncp, 1);
MODULE_DEPEND(ncp, libmchain, 1, 1, 1);
static int
ncp_conn_frag_rq(struct ncp_conn *conn, struct proc *p, struct ncp_conn_frag *nfp);
/*
* Attach to NCP server
*/
struct sncp_connect_args {
struct ncp_conn_args *li;
int *connHandle;
};
static int
sncp_connect(struct proc *p, struct sncp_connect_args *uap)
{
int connHandle = 0, error;
struct ncp_conn *conn;
struct ncp_handle *handle;
struct ncp_conn_args li;
checkbad(copyin(uap->li,&li,sizeof(li)));
checkbad(copyout(&connHandle,uap->connHandle,sizeof(connHandle))); /* check before */
li.password = li.user = NULL;
error = ncp_conn_getattached(&li, p, p->p_ucred, NCPM_WRITE | NCPM_EXECUTE, &conn);
if (error) {
error = ncp_conn_alloc(&li, p, p->p_ucred, &conn);
if (error)
goto bad;
error = ncp_conn_reconnect(conn);
if (error)
ncp_conn_free(conn);
}
if (!error) {
error = ncp_conn_gethandle(conn, p, &handle);
copyout(&handle->nh_id, uap->connHandle, sizeof(uap->connHandle));
ncp_conn_unlock(conn,p);
}
bad:
p->p_retval[0]=error;
return error;
}
struct sncp_request_args {
int connHandle;
int fn;
struct ncp_buf *ncpbuf;
};
static int ncp_conn_handler(struct proc *p, struct sncp_request_args *uap,
struct ncp_conn *conn, struct ncp_handle *handle);
static int
sncp_request(struct proc *p, struct sncp_request_args *uap)
{
struct ncp_rq *rqp;
struct ncp_conn *conn;
struct ncp_handle *handle;
int error = 0, rqsize;
error = ncp_conn_findhandle(uap->connHandle,p,&handle);
if (error)
return error;
conn = handle->nh_conn;
if (uap->fn == NCP_CONN)
return ncp_conn_handler(p, uap, conn, handle);
error = copyin(&uap->ncpbuf->rqsize, &rqsize, sizeof(int));
if (error)
return(error);
error = ncp_rq_alloc(uap->fn, conn, p, p->p_ucred, &rqp);
if (error)
return error;
if (rqsize) {
error = mb_put_mem(&rqp->rq, (caddr_t)uap->ncpbuf->packet,
rqsize, MB_MUSER);
if (error)
goto bad;
}
rqp->nr_flags |= NCPR_DONTFREEONERR;
error = ncp_request(rqp);
if (error == 0 && rqp->nr_rpsize)
error = md_get_mem(&rqp->rp, (caddr_t)uap->ncpbuf->packet,
rqp->nr_rpsize, MB_MUSER);
copyout(&rqp->nr_cs, &uap->ncpbuf->cs, sizeof(rqp->nr_cs));
copyout(&rqp->nr_cc, &uap->ncpbuf->cc, sizeof(rqp->nr_cc));
copyout(&rqp->nr_rpsize, &uap->ncpbuf->rpsize, sizeof(rqp->nr_rpsize));
bad:
ncp_rq_done(rqp);
return error;
}
static int
ncp_mod_login(struct ncp_conn *conn, char *user, int objtype, char *password,
struct proc *p, struct ucred *cred)
{
int error;
if (ncp_suser(cred) != 0 && cred->cr_uid != conn->nc_owner->cr_uid)
return EACCES;
conn->li.user = ncp_str_dup(user);
if (conn->li.user == NULL)
return ENOMEM;
conn->li.password = ncp_str_dup(password);
if (conn->li.password == NULL) {
error = ENOMEM;
goto bad;
}
ncp_str_upper(conn->li.user);
if ((conn->li.opt & NCP_OPT_NOUPCASEPASS) == 0)
ncp_str_upper(conn->li.password);
conn->li.objtype = objtype;
error = ncp_conn_login(conn, p, cred);
return error;
bad:
if (conn->li.user) {
free(conn->li.user, M_NCPDATA);
conn->li.user = NULL;
}
if (conn->li.password) {
free(conn->li.password, M_NCPDATA);
conn->li.password = NULL;
}
return error;
}
static int
ncp_conn_handler(struct proc *p, struct sncp_request_args *uap,
struct ncp_conn *conn, struct ncp_handle *hp)
{
int error=0, rqsize, subfn;
struct ucred *cred;
char *pdata;
cred = p->p_ucred;
error = copyin(&uap->ncpbuf->rqsize, &rqsize, sizeof(int));
if (error) return(error);
error = 0;
pdata = uap->ncpbuf->packet;
subfn = *(pdata++) & 0xff;
rqsize--;
switch (subfn) {
case NCP_CONN_READ: case NCP_CONN_WRITE: {
struct ncp_rw rwrq;
struct uio auio;
struct iovec iov;
if (rqsize != sizeof(rwrq)) return (EBADRPC);
error = copyin(pdata,&rwrq,rqsize);
if (error) return (error);
iov.iov_base = rwrq.nrw_base;
iov.iov_len = rwrq.nrw_cnt;
auio.uio_iov = &iov;
auio.uio_iovcnt = 1;
auio.uio_offset = rwrq.nrw_offset;
auio.uio_resid = rwrq.nrw_cnt;
auio.uio_segflg = UIO_USERSPACE;
auio.uio_rw = (subfn == NCP_CONN_READ) ? UIO_READ : UIO_WRITE;
auio.uio_procp = p;
if (subfn == NCP_CONN_READ)
error = ncp_read(conn, &rwrq.nrw_fh, &auio, cred);
else
error = ncp_write(conn, &rwrq.nrw_fh, &auio, cred);
rwrq.nrw_cnt -= auio.uio_resid;
p->p_retval[0] = rwrq.nrw_cnt;
break;
} /* case int_read/write */
case NCP_CONN_SETFLAGS: {
u_int16_t mask, flags;
error = copyin(pdata,&mask, sizeof(mask));
if (error) return error;
pdata += sizeof(mask);
error = copyin(pdata,&flags,sizeof(flags));
if (error) return error;
error = ncp_conn_lock(conn,p,cred,NCPM_WRITE);
if (error) return error;
if (mask & NCPFL_PERMANENT) {
conn->flags &= ~NCPFL_PERMANENT;
conn->flags |= (flags & NCPFL_PERMANENT);
}
if (mask & NCPFL_PRIMARY) {
error = ncp_conn_setprimary(conn, flags & NCPFL_PRIMARY);
if (error) {
ncp_conn_unlock(conn,p);
break;
}
}
ncp_conn_unlock(conn,p);
break;
}
case NCP_CONN_LOGIN: {
struct ncp_conn_login la;
if (rqsize != sizeof(la))
return EBADRPC;
if (conn->flags & NCPFL_LOGGED)
return EALREADY;
if ((error = copyin(pdata,&la,rqsize)) != 0)
break;
error = ncp_conn_lock(conn, p, cred, NCPM_EXECUTE | NCPM_WRITE);
if (error) return error;
error = ncp_mod_login(conn, la.username, la.objtype, la.password, p, p->p_ucred);
ncp_conn_unlock(conn, p);
p->p_retval[0] = error;
break;
}
case NCP_CONN_GETINFO: {
struct ncp_conn_stat ncs;
int len = sizeof(ncs);
error = ncp_conn_lock(conn, p, p->p_ucred, NCPM_READ);
if (error) return error;
ncp_conn_getinfo(conn, &ncs);
copyout(&len, &uap->ncpbuf->rpsize, sizeof(int));
error = copyout(&ncs, &uap->ncpbuf->packet, len);
ncp_conn_unlock(conn, p);
break;
}
case NCP_CONN_GETUSER: {
int len;
error = ncp_conn_lock(conn, p, p->p_ucred, NCPM_READ);
if (error) return error;
len = (conn->li.user) ? strlen(conn->li.user) + 1 : 0;
copyout(&len, &uap->ncpbuf->rpsize, sizeof(int));
if (len) {
error = copyout(conn->li.user, &uap->ncpbuf->packet, len);
}
ncp_conn_unlock(conn, p);
break;
}
case NCP_CONN_CONN2REF: {
int len = sizeof(int);
error = ncp_conn_lock(conn, p, p->p_ucred, NCPM_READ);
if (error) return error;
copyout(&len, &uap->ncpbuf->rpsize, sizeof(int));
if (len) {
error = copyout(&conn->nc_id, &uap->ncpbuf->packet, len);
}
ncp_conn_unlock(conn, p);
break;
}
case NCP_CONN_FRAG: {
struct ncp_conn_frag nf;
if (rqsize != sizeof(nf)) return (EBADRPC);
if ((error = copyin(pdata, &nf, rqsize)) != 0) break;
error = ncp_conn_lock(conn, p, cred, NCPM_EXECUTE);
if (error) return error;
error = ncp_conn_frag_rq(conn, p, &nf);
ncp_conn_unlock(conn, p);
copyout(&nf, &pdata, sizeof(nf));
p->p_retval[0] = error;
break;
}
case NCP_CONN_DUP: {
struct ncp_handle *newhp;
int len = sizeof(NWCONN_HANDLE);
error = ncp_conn_lock(conn, p, cred, NCPM_READ);
if (error) break;
copyout(&len, &uap->ncpbuf->rpsize, len);
error = ncp_conn_gethandle(conn, p, &newhp);
if (!error)
error = copyout(&newhp->nh_id, uap->ncpbuf->packet, len);
ncp_conn_unlock(conn,p);
break;
}
case NCP_CONN_CONNCLOSE: {
error = ncp_conn_lock(conn, p, cred, NCPM_EXECUTE);
if (error) break;
ncp_conn_puthandle(hp, p, 0);
error = ncp_conn_free(conn);
if (error)
ncp_conn_unlock(conn, p);
break;
}
default:
error = EOPNOTSUPP;
}
return error;
}
struct sncp_conn_scan_args {
struct ncp_conn_args *li;
int *connHandle;
};
static int
sncp_conn_scan(struct proc *p, struct sncp_conn_scan_args *uap)
{
int connHandle = 0, error;
struct ncp_conn_args li, *lip;
struct ncp_conn *conn;
struct ncp_handle *hp;
char *user = NULL, *password = NULL;
if (uap->li) {
if (copyin(uap->li,&li,sizeof(li))) return EFAULT;
lip = &li;
} else {
lip = NULL;
}
if (lip != NULL) {
lip->server[sizeof(lip->server)-1]=0; /* just to make sure */
ncp_str_upper(lip->server);
if (lip->user) {
user = ncp_str_dup(lip->user);
if (user == NULL) return EINVAL;
ncp_str_upper(user);
}
if (lip->password) {
password = ncp_str_dup(lip->password);
if (password == NULL) {
if (user)
free(user, M_NCPDATA);
return EINVAL;
}
ncp_str_upper(password);
}
lip->user = user;
lip->password = password;
}
error = ncp_conn_getbyli(lip,p,p->p_ucred,NCPM_EXECUTE,&conn);
if (!error) { /* already have this login */
ncp_conn_gethandle(conn, p, &hp);
connHandle = hp->nh_id;
ncp_conn_unlock(conn,p);
copyout(&connHandle,uap->connHandle,sizeof(connHandle));
}
if (user) free(user, M_NCPDATA);
if (password) free(password, M_NCPDATA);
p->p_retval[0] = error;
return error;
}
int
ncp_conn_frag_rq(struct ncp_conn *conn, struct proc *p, struct ncp_conn_frag *nfp)
{
NW_FRAGMENT *fp;
struct ncp_rq *rqp;
u_int32_t fsize;
int error, i, rpsize;
error = ncp_rq_alloc(nfp->fn, conn, p, p->p_ucred, &rqp);
if (error)
return error;
for(fp = nfp->rqf, i = 0; i < nfp->rqfcnt; i++, fp++) {
error = mb_put_mem(&rqp->rq, (caddr_t)fp->fragAddress, fp->fragSize, MB_MUSER);
if (error)
goto bad;
}
rqp->nr_flags |= NCPR_DONTFREEONERR;
error = ncp_request(rqp);
if (error)
goto bad;
rpsize = rqp->nr_rpsize;
if (rpsize && nfp->rpfcnt) {
for(fp = nfp->rpf, i = 0; i < nfp->rpfcnt; i++, fp++) {
error = copyin(&fp->fragSize, &fsize, sizeof (fsize));
if (error)
break;
fsize = min(fsize, rpsize);
error = md_get_mem(&rqp->rp, (caddr_t)fp->fragAddress, fsize, MB_MUSER);
if (error)
break;
rpsize -= fsize;
error = copyout(&fsize, &fp->fragSize, sizeof (fsize));
if (error)
break;
}
}
nfp->cs = rqp->nr_cs;
nfp->cc = rqp->nr_cc;
bad:
ncp_rq_done(rqp);
return error;
}
/*
* Internal functions, here should be all calls that do not require connection.
* To simplify possible future movement to cdev, we use IOCTL macros.
* Pretty much of this stolen from ioctl() function.
*/
struct sncp_intfn_args {
u_long com;
caddr_t data;
};
static int
sncp_intfn(struct proc *p, struct sncp_intfn_args *uap)
{
return ENOSYS;
}
/*
* define our new system calls
*/
static struct sysent newent[] = {
{2, (sy_call_t*)sncp_conn_scan},
{2, (sy_call_t*)sncp_connect},
{2, (sy_call_t*)sncp_intfn},
{3, (sy_call_t*)sncp_request}
};
#define SC_SIZE sizeof(newent)/sizeof(struct sysent)
/*
* Miscellaneous modules must have their own save areas...
*/
static struct sysent oldent[SC_SIZE]; /* save are for old callslot entry*/
/*
* Number of syscall entries for a.out executables
*/
/*#define nsysent SYS_MAXSYSCALL*/
#define nsysent (aout_sysvec.sv_size)
static int
ncp_load(void) {
int i, ff, scnt, err=0;
while(1) {
/* Search the table looking for an enough number of slots... */
for (scnt=0, ff = -1, i = 0; i < nsysent; i++) {
if (sysent[i].sy_call == (sy_call_t *)lkmnosys) {
if (ff == -1) {
ff = i;
scnt = 1;
} else {
scnt++;
if (scnt == SC_SIZE) break;
}
} else {
ff = -1;
}
}
/* out of allocable slots?*/
if(i == nsysent || ff == -1) {
err = ENFILE;
break;
}
err = ncp_init();
if (err) break;
bcopy(&sysent[ff], &oldent, sizeof(struct sysent)*SC_SIZE);
bcopy(&newent, &sysent[ff], sizeof(struct sysent)*SC_SIZE);
ncp_sysent = ff; /* slot in sysent[]*/
printf("ncp_load: [%d-%d]\n",ff,i);
break;
}
return( err);
}
static int
ncp_unload(void)
{
int error;
error = ncp_done();
if (error)
return error;
bcopy(&oldent, &sysent[ncp_sysent], sizeof(struct sysent) * SC_SIZE);
printf( "ncp_unload: unloaded\n");
return 0;
}
static int
ncp_mod_handler(module_t mod, int type, void *data)
{
int error;
switch (type) {
case MOD_LOAD:
error = ncp_load();
break;
case MOD_UNLOAD:
error = ncp_unload();
break;
default:
error = EINVAL;
}
return error;
}
\
static moduledata_t ncp_mod = {
"ncp",
ncp_mod_handler,
NULL
};
DECLARE_MODULE(ncp, ncp_mod, SI_SUB_PROTO_DOMAIN, SI_ORDER_ANY);
