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5cb1ffb0c3d7995ab8dca76e30c2da3ff0b9ede5
ncpfs/sutil/ncpm_common.c
Mario Fetka 5cb1ffb0c3 Apply patch: ncpfs-2.2.6-missing-includes.patch
2026-04-28 20:56:04 +02:00

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/*
ncplogin.c ncpmap.c and possibly ncpmount.c
Copyright (C) 1995, 1997 by Volker Lendecke
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Revision history:
1.00 2001 February 26 Patrick Pollet <patrick.pollet@insa-lyon.fr>
Initial release
This program is based on ncpmount.c release 1.07 2001, February 25 by Petr Vandrovec <vandrove@vc.cvut.cz>
Basically it substitute the -S server parameter with -T tree -X context options
Source code of ncplogin AND ncpmap (AND eventually ncpmount) should stays the same.
See the Makefile.in for compile flags.
CFLAGS_ncplogin.o = -DNWMSG=\"$(sbindir)/nwmsg\"
CFLAGS_ncpmap.o = -DNWMSG=\"$(sbindir)/nwmsg\" -DNCPMAP=1
CFLAGS_ncpmount.o = -DNWMSG=\"$(sbindir)/nwmsg\" -DNCPMOUNT=1
1.01 2001 March 10 Patrick Pollet <patrick.pollet@insa-lyon.fr>
Added failed in all error messages for easier TCL/tk parsing
Added -'E' option to echo mount_point in case of success (for TCL/Tk)
Shuffled some blocks of code to mimize #ifdef #ifndef
Corrected:#1135 (make_unique_dir= forgot to autocreate ~/ncp!
Corrected:#1397 wrong list of possible arguments to getopt()
Corrected:#1754 else was missing.
Corrected:#2147 ncplogin cannot use NWDSWhoami since we are not yet authenticated
Corrected:forgot to free context at various errors points
Corrected:incomplete help ncplogin,ncpmap (-X missing)
1.02 2001 March 12 Patrick Pollet <patrick.pollet@insa-lyon.fr>
Corrected #1668 info.resourcename was not set to SYS with -S option.
Note that with ncplogin/ncpmap: if volume is already mounted
the message already mounted:name of mount point will be printed and exitcode=0 (#2201)
1.03 2001 March 16 Patrick Pollet <patrick.pollet@insa-lyon.fr>
Added Default user logic if missing from command line (ncplogin only in TREE mode)
1.04 2001 August 11 Petr Vandrovec
Modified ncpmount part to match ncpmount v 1.08
1.05 2001 October 25 Patrick Pollet <patrick.pollet@insa-lyon.fr>
Added a signal(SIGPIPE, SIG_IGN) in process_connexion to match ncpmount v 1.08
In progress: ncpmap does not complains in case of multiple connexions and mount it twice
(2 entries in /etc/mtab)???
not a problem with ncplogin since it check that user is not currently authenticated ...
1.06 2001 December 8 Patrick Pollet <patrick.pollet@insa-lyon.fr>
ncplogin with -S option did not searched for missing -U user argument in environnment/nwclient
file if not supplied on the command line. Code moved from the -T case to all cases.
1.07 2002 January 20 Petr Vandrovec <vandrove@vc.cvut.cz>
Apply checks on uid/gid/owner value, so normal user can no longer mount filesystem
with someone else's uid.
Convert fprintf(stderr, "failed:yyy"...) to eprintf("yyy"...). Now ncpmount and ncplogin
use same .po entries.
Convert eprintf() + exit() => errexit()
1.08 2002, February 27 Petr Vandrovec <vandrove@vc.cvut.cz>
Fix core dump when no username is specified to ncplogin.
1.09 2002, February 27 Petr Vandrovec <vandrove@vc.cvut.cz>
Erase password quickly from command line.
Clear command line completely.
Simpler command line handling.
1.10 2002, April 19 Peter Schwindt <schwindt@ba-loerrach.de>
Add option -A to the help text.
*/
#include "ncpm_common.h"
#include <stddef.h>
#include <stdio.h>
#include <string.h>
#include <signal.h>
#include <pwd.h>
#include <grp.h>
#include <ncp/ext/socket.h>
#include <sys/param.h>
#include <netinet/in.h>
#include <netdb.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/errno.h>
#include <sys/time.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <ctype.h>
#include <stdlib.h>
#include <stdarg.h>
#include <sys/mount.h>
#include <mntent.h>
#include <ncp/kernel/ipx.h>
#include <sys/ioctl.h>
#if MOUNT3
#include <utmp.h>
#include <syslog.h>
#endif
#ifdef CONFIG_NATIVE_UNIX
#include <linux/un.h>
#endif
#include <ncp/kernel/ncp.h>
#include <ncp/kernel/ncp_fs.h>
#include <ncp/nwcalls.h>
#include <ncp/nwnet.h>
#include <sys/utsname.h>
#include "private/libintl.h"
#define _(X) gettext(X)
#include "../lib/ncpi.h"
#ifndef NR_OPEN
/* getrlimit... */
#define NR_OPEN 1024
#endif
#ifndef MS_MANDLOCK
#define MS_MANDLOCK 64
#endif
#ifndef MS_NOATIME
#define MS_NOATIME 1024
#endif
#ifndef MS_NODIRATIME
#define MS_NODIRATIME 2048
#endif
#include "ncpmount.h"
#include "mount_login.h"
#define ncp_array_size(x) (sizeof(x)/sizeof((x)[0]))
void eprintf(const char* message, ...) {
va_list ap;
va_start(ap, message);
veprintf(message, ap);
va_end(ap);
}
void errexit(int ecode, const char* message, ...) {
va_list ap;
va_start(ap, message);
veprintf(message, ap);
va_end(ap);
exit(ecode);
}
void mycom_err(int err, const char* message, ...) {
eprintf("%s: %s ", progname, strnwerror(err));
if (message) {
va_list ap;
va_start(ap, message);
vfprintf(stderr, message, ap);
va_end(ap);
}
fprintf(stderr, "\n");
}
#ifdef MOUNT2
/* Returns 0 if the filesystem is in the kernel after this routine
completes */
static int load_ncpfs(void)
{
FILE *fs;
char s[1024];
char *p, *p1;
pid_t pid;
int status;
/* Check if ncpfs is in the kernel */
fs = fopen("/proc/filesystems", "r");
if (fs == NULL)
{
perror(_("Error: \"/proc/filesystems\" could not be read:"));
return -1;
}
p = NULL;
while (!feof(fs))
{
p1 = fgets(s, sizeof(s), fs);
if (p1)
{
p = strstr(s, "ncpfs");
if (p)
{
break;
}
}
}
fclose(fs);
if (p)
{
return 0;
}
/* system() function without signal handling, from Stevens */
if ((pid = fork()) < 0)
{
return 1;
} else if (pid == 0)
{
const char *myenv[] = {
"PATH=/sbin:/usr/sbin:/bin:/usr/bin",
NULL
};
/* child */
execle("/sbin/modprobe", "modprobe", "ncpfs", NULL, myenv);
_exit(127); /* execl error */
} else
{
/* parent */
while (waitpid(pid, &status, 0) < 0)
{
if (errno != EINTR)
{
status = -1;
break;
}
}
}
return status;
}
#endif /* MOUNT2 */
static int getmountver(void) {
struct utsname name;
int maj, mid, rev;
int ver;
if (uname(&name)) {
errexit(1, _("Cannot get kernel release\n"));
}
if (sscanf(name.release, "%d.%d.%d", &maj, &mid, &rev) != 3) {
errexit(2, _("Cannot convert kernel release \"%s\" to number\n"), name.release);
}
ver = maj*0x10000 + mid*0x100 + rev;
if (ver < 0x20100)
return 2;
if (ver < 0x20328)
return 3;
if (ver < 0x2051F)
return 4;
return 5;
}
/* Check whether user is allowed to mount on the specified mount point */
int mount_ok(struct stat *st)
{
if (!S_ISDIR(st->st_mode))
{
errno = ENOTDIR;
return -1;
}
if (suser()) {
return 0;
}
if ((myuid != st->st_uid)
|| ((st->st_mode & S_IRWXU) != S_IRWXU))
{
errno = EPERM;
return -1;
}
return 0;
}
#ifdef MOUNT3
/*
* This function changes the processes name as shown by the system.
* Stolen from Marcin Dalecki's modald :-)
*/
struct {
int argc;
char **argv;
struct {
size_t len;
char* base;
} arg, env;
} iv;
static void inststr(const char *src)
{
/* stolen from the source to perl 4.036 (assigning to $0) */
int count;
strncpy(iv.arg.base, src, iv.arg.len);
for (count = 1; count < iv.argc; count++) {
iv.argv[count] = NULL;
}
}
void verify_argv(int argc, char* argv[]) {
char *ptr;
int count;
progname = argv[0];
ptr = strrchr(progname, '/');
if (ptr) {
progname = ptr + 1;
}
iv.argv = argv;
iv.argc = argc;
ptr = argv[0] + strlen(argv[0]);
for (count = 1; count < argc; count++) {
if (argv[count] == ptr + 1) {
ptr++;
ptr += strlen(ptr);
}
}
iv.arg.base = argv[0];
iv.arg.len = ptr - argv[0];
ptr = environ[0];
if (ptr) {
ptr += strlen(ptr);
for (count = 1; environ[count]; count++) {
if (environ[count] == ptr + 1) {
ptr++;
ptr += strlen(ptr);
}
}
}
iv.env.base = environ[0];
iv.env.len = ptr - environ[0];
}
#else
void verify_argv(int argc, char* argv[]) {
char *ptr;
progname = argv[0];
ptr = strrchr(progname, '/');
if (ptr) {
progname = ptr + 1;
}
}
#endif
static inline int ncpm_suser(void) {
return setresuid(0, 0, myuid);
}
static int ncpm_normal(void) {
int e;
int v;
e = errno;
v = setresuid(myuid, myuid, 0);
errno = e;
return v;
}
void block_sigs(void) {
sigset_t mask, orig_mask;
sigfillset(&mask);
if(sigprocmask(SIG_SETMASK, &mask, &orig_mask) < 0) {
errexit(-1, _("Blocking signals failed.\n"));
}
}
void unblock_sigs(void) {
sigset_t mask, orig_mask;
sigemptyset(&mask);
if (sigprocmask(SIG_SETMASK, &mask, &orig_mask) < 0) {
errexit(-1, _("Un-blocking signals failed.\n"));
}
}
static int proc_ncpm_mount(const char* source, const char* target, const char* filesystem, unsigned long mountflags, const void* data) {
int v;
int e;
if (ncpm_suser()) {
return errno;
}
v = mount(source, target, filesystem, mountflags, data);
if (ncpm_normal()) {
/* We cannot handle this situation gracefully, so do what we can */
e = errno;
/* If mount suceeded, undo it */
if (v) {
umount(target);
}
errexit(88, _("Cannot relinquish superuser rights: %s\n"), strerror(e));
}
return v;
}
int proc_ncpm_umount(const char* target) {
int v;
if (ncpm_suser()) {
return errno;
}
v = umount(target);
if (ncpm_normal()) {
errexit(89, _("Cannot relinquish superuser rights: %s\n"), strerror(errno));
}
return v;
}
#ifdef MOUNT2
static int ncp_mount_v2(const char* mount_name, unsigned long flags, const struct ncp_mount_data_independent* data) {
struct ncp_mount_data_v2 datav2;
int err;
if (data->serv_addr.sipx_family != AF_IPX) {
return EPROTONOSUPPORT;
}
datav2.version = NCP_MOUNT_VERSION_V2;
datav2.ncp_fd = data->ncp_fd;
datav2.wdog_fd = data->wdog_fd;
datav2.message_fd = data->message_fd;
datav2.mounted_uid = data->mounted_uid;
memcpy(&datav2.serv_addr, &data->serv_addr, sizeof(datav2.serv_addr));
strncpy(datav2.server_name, data->server_name, sizeof(datav2.server_name));
strncpy(datav2.mount_point, data->mount_point, sizeof(datav2.mount_point));
strncpy(datav2.mounted_vol, data->mounted_vol, sizeof(datav2.mounted_vol));
datav2.time_out = data->time_out;
datav2.retry_count = data->retry_count;
datav2.flags = 0;
datav2.flags |= data->flags.mount_soft?NCP_MOUNT2_SOFT:0;
datav2.flags |= data->flags.mount_intr?NCP_MOUNT2_INTR:0;
datav2.flags |= data->flags.mount_strong?NCP_MOUNT2_STRONG:0;
datav2.flags |= data->flags.mount_no_os2?NCP_MOUNT2_NO_OS2:0;
datav2.flags |= data->flags.mount_no_nfs?NCP_MOUNT2_NO_NFS:0;
if (data->flags.mount_extras || data->flags.mount_symlinks || data->flags.mount_nfs_extras) {
return EINVAL;
}
datav2.uid = data->uid;
datav2.gid = data->gid;
if ((datav2.mounted_uid != data->mounted_uid) ||
(datav2.uid != data->uid) ||
(datav2.gid != data->gid)) {
return EINVAL;
}
datav2.file_mode = data->file_mode;
datav2.dir_mode = data->dir_mode;
err = proc_ncpm_mount(mount_name, ".", "ncpfs", flags, (void*) &datav2);
if (err)
return errno;
return 0;
}
#endif
#ifdef MOUNT3
static int
process_connection (const struct ncp_mount_data_independent* mnt, int pipe_fd);
static void notify_slave(int info_fd, int version) {
unsigned char p[12];
DSET_HL(p, 0, 12);
DSET_HL(p, 4, 1);
DSET_HL(p, 8, version);
write(info_fd, p, 12);
}
static int ncp_mount_v3(const char* mount_name, unsigned long flags, const struct ncp_mount_data_independent* data) {
int pp[2];
struct ncp_mount_data_v3 datav3;
int err;
datav3.version = NCP_MOUNT_VERSION_V3;
datav3.ncp_fd = data->ncp_fd;
datav3.mounted_uid = data->mounted_uid;
strncpy(datav3.mounted_vol, data->mounted_vol, sizeof(datav3.mounted_vol));
datav3.time_out = data->time_out;
datav3.retry_count = data->retry_count;
datav3.flags = 0;
datav3.flags |= data->flags.mount_soft?NCP_MOUNT3_SOFT:0;
datav3.flags |= data->flags.mount_intr?NCP_MOUNT3_INTR:0;
datav3.flags |= data->flags.mount_strong?NCP_MOUNT3_STRONG:0;
datav3.flags |= data->flags.mount_no_os2?NCP_MOUNT3_NO_OS2:0;
datav3.flags |= data->flags.mount_no_nfs?NCP_MOUNT3_NO_NFS:0;
datav3.flags |= data->flags.mount_extras?NCP_MOUNT3_EXTRAS:0;
datav3.flags |= data->flags.mount_symlinks?NCP_MOUNT3_SYMLINKS:0;
datav3.flags |= data->flags.mount_nfs_extras?NCP_MOUNT3_NFS_EXTRAS:0;
datav3.uid = data->uid;
datav3.gid = data->gid;
datav3.file_mode = data->file_mode;
datav3.dir_mode = data->dir_mode;
if ((datav3.mounted_uid != data->mounted_uid) ||
(datav3.uid != data->uid) ||
(datav3.gid != data->gid)) {
return EINVAL;
}
connect(datav3.ncp_fd, (const struct sockaddr *)&data->serv_addr, sizeof(data->serv_addr));
if (pipe(pp)) {
errexit(64, _("Could not create pipe: %s\n"), strerror(errno));
}
datav3.wdog_pid = fork();
if (datav3.wdog_pid < 0) {
errexit(5, _("Could not fork: %s\n"), strerror(errno));
}
if (datav3.wdog_pid == 0) {
/* Child */
close(pp[1]);
process_connection(data, pp[0]);
exit(0); /* Should not return from process_connection */
}
close(pp[0]);
err=proc_ncpm_mount(mount_name, ".", "ncpfs", flags, (void*) &datav3);
if (err) {
err = errno;
/* Mount unsuccesful so we have to kill daemon */
/* If mount succeeds, kernel kills daemon */
close(pp[1]);
kill(datav3.wdog_pid, SIGTERM);
return err;
}
notify_slave(pp[1], NCP_MOUNT_VERSION_V3);
close(pp[1]);
return 0;
}
static int ncp_mount_v4(const char* mount_name, unsigned long flags, struct ncp_mount_data_independent* data, int trytext) {
int pp[2];
int err;
unsigned int ncpflags;
int wdog_pid;
char mountopts[1024];
ncpflags = 0;
ncpflags |= data->flags.mount_soft?NCP_MOUNT3_SOFT:0;
ncpflags |= data->flags.mount_intr?NCP_MOUNT3_INTR:0;
ncpflags |= data->flags.mount_strong?NCP_MOUNT3_STRONG:0;
ncpflags |= data->flags.mount_no_os2?NCP_MOUNT3_NO_OS2:0;
ncpflags |= data->flags.mount_no_nfs?NCP_MOUNT3_NO_NFS:0;
ncpflags |= data->flags.mount_extras?NCP_MOUNT3_EXTRAS:0;
ncpflags |= data->flags.mount_symlinks?NCP_MOUNT3_SYMLINKS:0;
ncpflags |= data->flags.mount_nfs_extras?NCP_MOUNT3_NFS_EXTRAS:0;
if (socketpair(PF_UNIX, SOCK_STREAM, 0, pp)) {
errexit(64, _("Could not create pipe: %s\n"), strerror(errno));
}
connect(data->ncp_fd, (const struct sockaddr *)&data->serv_addr, sizeof(data->serv_addr));
wdog_pid = fork();
if (wdog_pid < 0) {
errexit(6, _("Could not fork: %s\n"), strerror(errno));
}
if (wdog_pid == 0) {
/* Child */
close(pp[1]);
process_connection(data, pp[0]);
exit(0); /* Should not return from process_connection */
}
close(pp[0]);
if (trytext) {
sprintf(mountopts, "version=%u,flags=%u,owner=%u,uid=%u,gid=%u,mode=%u,dirmode=%u,timeout=%u,retry=%u,wdogpid=%u,ncpfd=%u,infofd=%u",
NCP_MOUNT_VERSION_V5, ncpflags, data->mounted_uid, data->uid, data->gid, data->file_mode,
data->dir_mode, data->time_out, data->retry_count, wdog_pid, data->ncp_fd, pp[1]);
err=proc_ncpm_mount(mount_name, ".", "ncpfs", flags, mountopts);
} else {
err=-1;
}
if (err) {
struct ncp_mount_data_v4 datav4;
datav4.version = NCP_MOUNT_VERSION_V4;
datav4.ncp_fd = data->ncp_fd;
datav4.mounted_uid = data->mounted_uid;
datav4.time_out = data->time_out;
datav4.retry_count = data->retry_count;
datav4.flags = ncpflags;
datav4.uid = data->uid;
datav4.gid = data->gid;
datav4.file_mode = data->file_mode;
datav4.dir_mode = data->dir_mode;
datav4.wdog_pid = wdog_pid;
err = proc_ncpm_mount(mount_name, ".", "ncpfs", flags, (void*)&datav4);
if (err) {
err = errno;
/* Mount unsuccesful so we have to kill daemon */
/* If mount succeeds, kernel kills daemon */
close(pp[1]);
kill(wdog_pid, SIGTERM);
return err;
}
notify_slave(pp[1], NCP_MOUNT_VERSION_V4);
} else {
notify_slave(pp[1], NCP_MOUNT_VERSION_V5);
}
close(pp[1]);
return 0;
}
#endif
void init_mount_info(struct ncp_mount_info *info) {
mode_t um;
myuid = getuid();
myeuid = geteuid();
if (myeuid == 0) {
if (setreuid(-1, myuid)) {
errexit(87, _("Cannot relinquish superuser rights: %s\n"), strerror(errno));
}
}
memset(info, 0, sizeof(*info));
info->version = -1;
info->flags = MS_MGC_VAL;
info->sig_level = -1;
info->remote_path = "/";
info->dentry_ttl = 0;
info->NWpath[0] = 0;
info->pathlen = 1;
info->passwd_fd = ~0;
info->mdata.mounted_uid = myuid;
info->mdata.uid = myuid;
info->mdata.gid = getgid();
um = umask(0);
umask(um);
info->mdata.file_mode = (S_IRWXU | S_IRWXG | S_IRWXO) & ~um;
info->mdata.dir_mode = 0;
info->mdata.flags.mount_soft = 1;
info->mdata.flags.mount_intr = 0;
info->mdata.flags.mount_strong = 0;
info->mdata.flags.mount_no_os2 = 0;
info->mdata.flags.mount_no_nfs = 0;
info->mdata.flags.mount_extras = 0;
info->mdata.flags.mount_symlinks = 0;
info->mdata.time_out = 60;
info->mdata.retry_count = 5;
info->mdata.mounted_vol = "";
info->upcase_password = 1;
info->bcastmode = NWCC_BCAST_PERMIT_ALL; /* all broadcasts by default */
if (!suser()) {
info->flags |= MS_NODEV | MS_NOEXEC | MS_NOSUID;
}
}
int ncp_mount(const char* mount_name, struct ncp_mount_info* info) {
if (info->version < 0) {
info->version = getmountver();
}
switch (info->version) {
#ifdef MOUNT2
case 2:
/* Check if the ncpfs filesystem is in the kernel. If not, attempt
* to load the ncpfs module */
if (load_ncpfs()) {
return ENXIO;
}
return ncp_mount_v2(mount_name, info->flags, &info->mdata);
#endif /* MOUNT2 */
#ifdef MOUNT3
case 3:
return ncp_mount_v3(mount_name, info->flags, &info->mdata);
case 4:
return ncp_mount_v4(mount_name, info->flags, &info->mdata, 0);
case 5:
return ncp_mount_v4(mount_name, info->flags, &info->mdata, 1);
#endif /* MOUNT3 */
default:
errexit(50, _("Unsupported mount protocol version %d\n"), info->version);
}
}
int
ncp_mount_specific(struct ncp_conn* conn, int pathNS, const unsigned char* NWpath, int pathlen) {
int result;
#ifdef NCP_IOC_SETROOT
{
struct ncp_setroot_ioctl sr;
if (pathlen == 1) {
sr.volNumber = -1;
sr.name_space = -1;
sr.dirEntNum = 0;
} else {
struct nw_info_struct2 dirinfo;
if (pathNS < 0) {
static const unsigned int nspcs[] = { NW_NS_NFS, NW_NS_LONG, NW_NS_DOS };
unsigned int i = 0;
do {
result = ncp_ns_obtain_entry_info(conn, nspcs[i], SA_ALL, NCP_DIRSTYLE_NOHANDLE,
0, 0, NWpath, pathlen, NW_NS_DOS, RIM_ALL,
&dirinfo, sizeof(dirinfo));
} while (result && ++i < ncp_array_size(nspcs));
} else {
result = ncp_ns_obtain_entry_info(conn, pathNS, SA_ALL, NCP_DIRSTYLE_NOHANDLE, 0, 0,
NWpath, pathlen, NW_NS_DOS, RIM_ALL, &dirinfo, sizeof(dirinfo));
}
if (result) {
return -ENOENT;
}
if (!(dirinfo.Attributes.Attributes & A_DIRECTORY)) {
return -ENOTDIR;
}
sr.volNumber = dirinfo.Directory.volNumber;
sr.name_space = NW_NS_DOS;
sr.dirEntNum = DVAL_LH(&dirinfo.Directory.dirEntNum, 0);
}
if (ncpm_suser()) {
return -errno;
}
result = ioctl(ncp_get_fid(conn), NCP_IOC_SETROOT, &sr);
if (ncpm_normal()) {
/* Just continue, otherwise we cannot unmount directory */
return result ? -errno : -EPERM;
}
if (!result) {
return 0;
}
}
#endif
if ((pathlen != 1) && (*NWpath != 1)) {
#ifdef NCP_IOC_SETROOT
eprintf(_("Remote directory is specified but kernel"
" does not support subdir mounts\n"));
#else
eprintf(_("Remote directory is specified but ncpmount"
" does not support subdir mounts\n"));
#endif
return -ENOPKG;
}
if (ncpm_suser()) {
return -errno;
}
result = ioctl(ncp_get_fid(conn), NCP_IOC_CONN_LOGGED_IN, NULL);
if (ncpm_normal()) {
/* Just continue, otherwise we cannot umount directory */
return result ? -errno : -EPERM;
}
if (result != 0) {
return -errno;
}
return 0;
}
#ifdef MOUNT3
static void
msg_received (void)
{
struct ncp_conn *conn;
int err;
err = fork();
if (err > 0)
return;
if (err == 0)
execl(NWMSG, NWMSG, mount_point, NULL);
/* fork or exec failed; get rid of message */
if (ncp_open_mount(mount_point, &conn) == 0) {
char message[256];
if (!ncp_get_broadcast_message(conn, message)) {
/* drop message to wastebasket */
}
ncp_close(conn);
}
if (err == 0)
exit(0);
}
static inline void confirm_wait(void) {
NWCONN_HANDLE conn;
if (ncp_open_mount(mount_point, &conn) == 0) {
NWCancelWait(conn);
ncp_close(conn);
}
}
/* MSG_DONTWAIT defined and module can run only on 2.1.x kernel */
#if defined(MSG_DONTWAIT) && !defined(MOUNT2)
#define recvfrom_notm(fd,buf,ln,sender,addrlen) recvfrom(fd,buf,ln,MSG_DONTWAIT,sender,addrlen)
#else
static int recvfrom_notm(int fd, void* buf, size_t len, struct sockaddr* sender, socklen_t* addrlen) {
int ret;
int flg;
flg = fcntl(fd, F_GETFL);
if (flg == -1) return -1;
fcntl(fd, F_SETFL, flg | O_NONBLOCK);
ret = recvfrom(fd, buf, len, 0, sender, addrlen);
fcntl(fd, F_SETFL, flg);
return ret;
}
#endif /* MSG_DONTWAIT && !MOUNT2 */
static void
process_msg_packet (int msg_fd)
{
struct sockaddr_ipx sender;
socklen_t addrlen = sizeof(sender);
char buf[1024];
if (recvfrom_notm(msg_fd, buf, sizeof(buf),
(struct sockaddr *) &sender, &addrlen) <= 0) {
return;
}
msg_received();
}
static void
process_wdog_packet (int wdog_fd)
{
struct sockaddr_ipx sender;
socklen_t addrlen = sizeof(sender);
char buf[2];
if (recvfrom_notm(wdog_fd, buf, sizeof(buf),
(struct sockaddr *) &sender, &addrlen) < (int)sizeof(buf)) {
return;
}
if (buf[1] != '?') {
return;
}
buf[1] = 'Y';
sendto(wdog_fd, buf, 2, 0, (struct sockaddr *) &sender, addrlen);
}
static void reapChld(UNUSED(int dummy)) {
signal(SIGCHLD, reapChld);
/* reap all exited childrens... */
while (wait4(-1, NULL, WNOHANG, NULL) > 0) ;
}
/* permanent connection globals */
static int nwcc_bcast_state = NWCC_BCAST_PERMIT_ALL;
static const char* nwcc_mount_point;
static NWCONN_NUM nwcc_connnum;
static int mount_version_rcvd;
static int mount_version;
static void ncp_ctl_cmd(unsigned int cmd, const unsigned char* data, size_t datalen) {
switch (cmd) {
case 0:
if (datalen < 10)
break;
if (nwcc_connnum != (NWCONN_NUM)(BVAL(data, 3) | (BVAL(data, 5) << 8)))
break;
switch (WVAL_HL(data, 0)) {
case 0xBBBB:
switch (BVAL(data, 9)) {
case 0x21:
msg_received();
return;
case 0x4C:
confirm_wait();
return;
}
break;
}
break;
case 1:
if (datalen != 4)
break;
mount_version = DVAL_HL(data, 0);
mount_version_rcvd = 1;
return;
default:
return;
}
{
char xxx[1024]; /* "cmd=XXXXXXXXXXX, len=XXXXXXXXX, data:" + 3x300 chars */
char* p;
sprintf(xxx, "cmd=%u, len=%zu, data:", cmd, datalen);
p = xxx + strlen(xxx);
if (datalen > 300) {
datalen = 300;
}
while (datalen--) {
sprintf(p, " %02X", *data++);
p += 3;
}
syslog(LOG_INFO, "%s", xxx);
}
}
static int prepare_unixfd(struct sockaddr_un* unix_addr, size_t unix_len) {
int f;
int unix_fd;
unix_fd = socket(PF_UNIX, SOCK_STREAM, 0);
if (unix_fd < 0)
return -1;
if (bind(unix_fd, (struct sockaddr*)unix_addr, unix_len))
goto quit;
if (listen(unix_fd, 5))
goto quit;
f = fcntl(unix_fd, F_GETFL);
if (f == -1)
goto quit;
if (fcntl(unix_fd, F_SETFL, f | O_NONBLOCK))
goto quit;
return unix_fd;
quit:;
close(unix_fd);
return -1;
}
struct ncp_ctl_client {
int fd;
int istate;
unsigned char* rcvptr;
size_t received;
size_t toreceive;
unsigned char hdr[4];
};
static void ncp_ctl_init(struct ncp_ctl_client* clnt, int fd) {
clnt->fd = fd;
clnt->rcvptr = clnt->hdr;
clnt->received = 0;
clnt->toreceive = 4;
clnt->istate = 0;
}
static void ncp_ctl_read(struct ncp_ctl_client* clnt) {
unsigned int len;
int r;
r = read(clnt->fd, clnt->rcvptr + clnt->received, clnt->toreceive - clnt->received);
if (r == 0) {
goto abort;
}
if (r < 0) {
return;
}
clnt->received += r;
if (clnt->received < clnt->toreceive) {
return;
}
switch (clnt->istate) {
case 0:
len = DVAL_HL(clnt->hdr, 0);
if (len < 8) {
goto abort;
}
if (len > 4096) {
goto abort;
}
len -= 4;
clnt->rcvptr = malloc(len);
if (!clnt->rcvptr) {
goto abort;
}
clnt->received = 0;
clnt->toreceive = len;
clnt->istate = 1;
break;
case 1:
ncp_ctl_cmd(DVAL_HL(clnt->rcvptr, 0), clnt->rcvptr + 4, clnt->toreceive - 4);
free(clnt->rcvptr);
clnt->rcvptr = clnt->hdr;
clnt->received = 0;
clnt->toreceive = 4;
clnt->istate = 0;
break;
}
return;
abort:;
close(clnt->fd);
clnt->fd = -1;
}
struct ncp_ext_client {
struct ncp_ext_client* next;
int fd;
int istate;
struct ucred peercred;
unsigned char* rcvptr;
size_t received;
size_t toreceive;
unsigned char hdr[16];
unsigned char* sndptr;
size_t sent;
size_t tosend;
};
static struct ncp_ext_client* accept_new_conn(int fd) {
struct ncp_ext_client* n;
struct sockaddr_un sun;
socklen_t sunlen;
int newfd;
int f;
sunlen = sizeof(sun);
newfd = accept(fd, (struct sockaddr*)&sun, &sunlen);
if (newfd < 0)
return NULL;
f = fcntl(newfd, F_GETFL);
if (f == -1)
goto quit;
if (fcntl(newfd, F_SETFL, f | O_NONBLOCK))
goto quit;
n = malloc(sizeof(*n));
if (!n)
goto quit;
memset(n, 0, sizeof(*n));
n->fd = newfd;
sunlen = sizeof(n->peercred);
if (getsockopt(newfd, SOL_SOCKET, SO_PEERCRED, &n->peercred, &sunlen))
goto quitfree;
if (sunlen != sizeof(n->peercred))
goto quitfree;
/* for now only root/suid can do that... */
if (n->peercred.uid)
goto quitfree;
return n;
quitfree:;
free(n);
quit:;
close(newfd);
return NULL;
}
static void ncp_ext_destroy(struct ncp_ext_client* clnt) {
if (clnt->rcvptr && clnt->rcvptr != clnt->hdr)
free(clnt->rcvptr);
if (clnt->sndptr && clnt->sndptr != clnt->hdr)
free(clnt->sndptr);
close(clnt->fd);
}
static int ncp_ext_init(struct ncp_ext_client* clnt) {
clnt->rcvptr = clnt->hdr;
clnt->received = 0;
clnt->toreceive = 16;
clnt->istate = 0;
return 0;
}
static int ncp_ext_send(struct ncp_ext_client* clnt) {
if (clnt->sndptr && clnt->sndptr != clnt->hdr)
free(clnt->sndptr);
return ncp_ext_init(clnt);
}
static int getconn(NWCONN_HANDLE* cn) {
return ncp_open_mount(nwcc_mount_point, cn);
}
static int ncp_ext_perform(struct ncp_ext_client* clnt, UNUSED(const unsigned char* data), UNUSED(size_t rqlen)) {
NWCONN_HANDLE cn;
int err;
clnt->sndptr = clnt->hdr;
clnt->tosend = 12;
switch (DVAL_LH(clnt->rcvptr, 0)) {
case NCPI_OP_GETVERSION:
DSET_LH(clnt->hdr, 12, 1); /* version 1 */
clnt->tosend = 16;
break;
case NCPI_OP_GETBCASTSTATE:
DSET_LH(clnt->hdr, 12, nwcc_bcast_state); /* state... */
clnt->tosend = 16;
break;
case NCPI_OP_SETBCASTSTATE:
{
int op;
if (clnt->toreceive < 8)
return NCPE_SHORT;
switch (op = DVAL_LH(clnt->rcvptr, 4)) {
case NWCC_BCAST_PERMIT_ALL:
case NWCC_BCAST_PERMIT_SYSTEM:
case NWCC_BCAST_PERMIT_NONE:
break;
case NWCC_BCAST_PERMIT_POLL:
default:
return NCPE_BAD_VALUE;
}
err = getconn(&cn);
if (err)
return err;
if (op == NWCC_BCAST_PERMIT_NONE || op == NWCC_BCAST_PERMIT_SYSTEM)
err = __NWDisableBroadcasts(cn);
else
err = __NWEnableBroadcasts(cn);
NWCCCloseConn(cn);
if (err)
return err;
nwcc_bcast_state = op;
}
break;
default:
return NCPE_BAD_COMMAND;
}
DSET_LH(clnt->sndptr, 4, clnt->tosend);
DSET_LH(clnt->sndptr, 8, 0);
return 0;
}
static int ncp_ext_receive(struct ncp_ext_client* clnt) {
switch (clnt->istate) {
case 0: {
size_t ln;
size_t rpln;
unsigned char* p;
int r;
if (DVAL_LH(clnt->hdr, 0) != NCPI_REQUEST_SIGNATURE)
return 1; /* unknown flag, kill it */
if (DVAL_LH(clnt->hdr, 8) != 1)
return 1; /* unknown version, kill it */
rpln = DVAL_LH(clnt->hdr, 12);
if (rpln < 12)
return 1;
ln = DVAL_LH(clnt->hdr, 4);
if (ln < 20)
return 1;
if (ln > 4096) /* FIX for largest possible command */
return 1;
p = (unsigned char*)malloc(ln - 16);
if (!p)
return 1;
clnt->rcvptr = p;
clnt->received = 0;
clnt->toreceive = ln - 16;
clnt->istate = 1;
r = read(clnt->fd, clnt->rcvptr, clnt->toreceive);
if (r == 0)
return 1;
if (r < 0)
return 0;
clnt->received += r;
if (clnt->received < clnt->toreceive)
return 0;
if (clnt->received != clnt->toreceive)
return 1;
}
/* FALLTHROUGH */
case 1: {
int w;
DSET_LH(clnt->hdr, 0, NCPI_REPLY_SIGNATURE);
w = ncp_ext_perform(clnt, clnt->rcvptr, clnt->toreceive);
if (w) {
DSET_LH(clnt->hdr, 4, 12);
DSET_LH(clnt->hdr, 8, NCPE_BAD_COMMAND);
clnt->sndptr = clnt->hdr;
clnt->tosend = 12;
}
if (clnt->rcvptr && clnt->rcvptr != clnt->hdr) {
free(clnt->rcvptr);
clnt->rcvptr = NULL;
}
clnt->sent = 0;
w = write(clnt->fd, clnt->sndptr, clnt->tosend);
if (w == 0)
return 1;
if (w < 0)
return 0;
clnt->sent += w;
if (clnt->sent > clnt->tosend)
return 1;
if (clnt->sent == clnt->tosend)
return ncp_ext_send(clnt);
return 0;
}
}
return 1;
}
static int
process_connection (const struct ncp_mount_data_independent* mnt, int pipe_fd)
{
int i;
int result;
int max;
int ncp_fd = mnt->ncp_fd;
int wdog_fd = mnt->wdog_fd;
int msg_fd = mnt->message_fd;
int unix_fd;
size_t unix_len;
struct sockaddr_un unix_addr;
struct stat stb;
struct timeval timeout;
struct timeval* tmv = NULL;
struct ncp_ext_client* clnts = NULL;
struct ncp_ctl_client infoctl;
chdir("/");
setsid();
inststr("ncpd");
{
sigset_t newsigset;
signal(SIGCHLD, reapChld);
signal(SIGTERM, SIG_DFL);
signal(SIGPIPE, SIG_IGN); /*added as per ncpmount 1.08 */
sigemptyset(&newsigset);
sigaddset(&newsigset, SIGTERM);
sigaddset(&newsigset, SIGCHLD);
sigprocmask(SIG_UNBLOCK, &newsigset, NULL);
}
for (i = 0; i < NR_OPEN; i++) {
if ((i == ncp_fd) || (i == wdog_fd) || (i == msg_fd) || (i == pipe_fd)) {
continue;
}
close(i);
}
/* Make something reasonable with descriptors 0, 1 and 2 */
for (i = 0; i < 3; i++) {
open("/dev/null", O_RDWR);
}
mount_version_rcvd = 0;
ncp_ctl_init(&infoctl, pipe_fd);
while (!mount_version_rcvd) {
ncp_ctl_read(&infoctl);
if (infoctl.fd < 0)
return 1;
}
unix_fd = -1;
if (!stat(mnt->mount_point, &stb)) {
unix_len = offsetof(struct sockaddr_un, sun_path) + sprintf(unix_addr.sun_path, "%cncpfs.permanent.mount.%lu", 0, (unsigned long)stb.st_dev) + 1;
unix_addr.sun_family = AF_UNIX;
unix_fd = prepare_unixfd(&unix_addr, unix_len);
}
nwcc_mount_point = mnt->mount_point;
{
NWCONN_HANDLE conn;
NWCCODE err;
err = ncp_open_mount(mnt->mount_point, &conn);
if (err)
return 1; /* Give up */
err = NWGetConnectionNumber(conn, &nwcc_connnum);
ncp_close(conn);
if (err)
return 1; /* Give up */
}
#if defined(CONFIG_NATIVE_IP) || defined(CONFIG_NATIVE_UNIX)
if (mnt->nt_type == NT_UDP) {
if (mount_version != 5) {
timeout.tv_sec = 180;
timeout.tv_usec = 0;
tmv = &timeout;
close(wdog_fd);
close(msg_fd);
wdog_fd = -1;
msg_fd = -1;
} else {
close(wdog_fd);
close(msg_fd);
close(ncp_fd);
wdog_fd = -1;
msg_fd = -1;
ncp_fd = -1;
}
} else if (mnt->nt_type == NT_TCP) {
close(wdog_fd);
close(msg_fd);
close(ncp_fd);
wdog_fd = -1;
msg_fd = -1;
ncp_fd = -1;
} else
#endif /* CONFIG_NATIVE_IP || CONFIG_NATIVE_UNIX */
{
close(ncp_fd);
ncp_fd = -1;
}
max = wdog_fd;
if (max < msg_fd)
max = msg_fd;
if (max < unix_fd)
max = unix_fd;
if (max < infoctl.fd)
max = infoctl.fd;
max += 1;
while (1) {
fd_set rd;
fd_set wr;
struct ncp_ext_client* tmpc;
struct ncp_ext_client** dtmpc;
FD_ZERO(&rd);
FD_ZERO(&wr);
if (wdog_fd >= 0)
FD_SET(wdog_fd, &rd);
if (msg_fd >= 0)
FD_SET(msg_fd, &rd);
if (unix_fd >= 0)
FD_SET(unix_fd, &rd);
if (infoctl.fd >= 0)
FD_SET(infoctl.fd, &rd);
for (tmpc = clnts; tmpc; tmpc = tmpc->next) {
if (tmpc->toreceive != tmpc->received)
FD_SET(tmpc->fd, &rd);
if (tmpc->tosend != tmpc->sent)
FD_SET(tmpc->fd, &wr);
}
if ((result = select(max, &rd, &wr, NULL, tmv)) == -1) {
if (errno == EAGAIN || errno == EINTR || errno == EWOULDBLOCK)
continue;
exit(0);
}
if (wdog_fd >= 0 && FD_ISSET(wdog_fd, &rd)) {
process_wdog_packet(wdog_fd);
}
if (msg_fd >= 0 && FD_ISSET(msg_fd, &rd)) {
process_msg_packet(msg_fd);
}
if (unix_fd >= 0 && FD_ISSET(unix_fd, &rd)) {
tmpc = accept_new_conn(unix_fd);
if (tmpc) {
if (ncp_ext_init(tmpc)) {
ncp_ext_destroy(tmpc);
free(tmpc);
} else {
tmpc->next = clnts;
clnts = tmpc;
if (max <= tmpc->fd)
max = tmpc->fd + 1;
}
}
}
if (infoctl.fd >= 0 && FD_ISSET(infoctl.fd, &rd)) {
ncp_ctl_read(&infoctl);
}
if (tmv && !tmv->tv_sec && !tmv->tv_usec) {
unsigned char buf[]={0x3E, 0x3E, 0, 0, 0, 0, 0, 0, 0, 'Y'};
buf[3] = buf[8] = nwcc_connnum&0xFF;
buf[5] = buf[7] = (nwcc_connnum>>8)&0xFF;
send(ncp_fd, buf, sizeof(buf), 0);
tmv->tv_sec = 180;
}
dtmpc = &clnts;
while (1) {
int dead;
tmpc = *dtmpc;
if (!tmpc)
break;
dead = 0;
if (FD_ISSET(tmpc->fd, &rd)) {
int r;
r = read(tmpc->fd, tmpc->rcvptr + tmpc->received, tmpc->toreceive);
if (r == 0)
dead = 1;
else if (r > 0) {
tmpc->received += r;
if (tmpc->received > tmpc->toreceive)
dead = 1;
else if (tmpc->received == tmpc->toreceive) {
dead = ncp_ext_receive(tmpc);
}
}
}
if (!dead && FD_ISSET(tmpc->fd, &wr)) {
int w;
w = write(tmpc->fd, tmpc->sndptr + tmpc->sent, tmpc->tosend);
if (w == 0)
dead = 1;
else if (w > 0) {
tmpc->sent += w;
if (tmpc->sent > tmpc->tosend)
dead = 1;
else if (tmpc->sent == tmpc->tosend) {
dead = ncp_ext_send(tmpc);
}
}
}
if (dead) {
ncp_ext_destroy(tmpc);
*dtmpc = tmpc->next;
free(tmpc);
} else {
dtmpc = &tmpc->next;
}
}
}
return 0;
}
#endif /* MOUNT3 */
static int check_name(const char *name)
{
char *s;
for (s = "\n\t\\"; *s; s++) {
if (strchr(name, *s)) {
return -1;
}
}
return 0;
}
static const struct smntflags {
unsigned int flag;
const char* name;
} mntflags[] = {
{MS_NOEXEC, "noexec"},
{MS_NOSUID, "nosuid"},
{MS_NODEV, "nodev"},
{MS_SYNCHRONOUS, "sync"},
{MS_MANDLOCK, "mand"},
{MS_NOATIME, "noatime"},
{MS_NODIRATIME, "nodiratime"},
{0, NULL}};
void add_mnt_entry(char* mount_name, char* mpnt, unsigned long flags) {
const struct smntflags* sf;
char mnt_opts[80];
char* p;
struct mntent ment;
int fd;
FILE* mtab;
off_t goodoffset;
if (check_name(mount_name) == -1 || check_name(mpnt) == -1)
errexit(107, _("Illegal character in mount entry\n"));
ment.mnt_fsname = mount_name;
ment.mnt_dir = mpnt;
ment.mnt_type = (char*)"ncpfs";
ment.mnt_opts = mnt_opts;
ment.mnt_freq = 0;
ment.mnt_passno = 0;
p = mnt_opts;
*p++ = 'r';
*p++ = (flags & MS_RDONLY)?'o':'w';
for (sf = mntflags; sf->flag; sf++) {
if (flags & sf->flag) {
*p++ = ',';
strcpy(p, sf->name);
p += strlen(p);
}
}
*p = 0;
if (ncpm_suser()) {
errexit(91, _("Cannot switch to superuser: %s\n"), strerror(errno));
}
if ((fd = open(MOUNTED "~", O_RDWR | O_CREAT | O_EXCL, 0600)) == -1)
{
errexit(58, _("Can't get %s~ lock file\n"), MOUNTED);
}
close(fd);
if ((mtab = setmntent(MOUNTED, "a+")) == NULL)
{
unlink(MOUNTED "~");
errexit(59, _("Can't open %s\n"), MOUNTED);
}
fseek (mtab, 0, SEEK_END);
goodoffset = ftell(mtab);
if (addmntent(mtab, &ment) == 1)
{
/* restore good state */
ftruncate(fileno(mtab), goodoffset);
endmntent(mtab);
unlink(MOUNTED "~");
errexit(60, _("Can't write mount entry\n"));
}
if (fchmod(fileno(mtab), 0644) == -1)
{
/* restore good state */
ftruncate(fileno(mtab), goodoffset);
endmntent(mtab);
unlink(MOUNTED "~");
errexit(61, _("Can't set perms on %s\n"), MOUNTED);
}
endmntent(mtab);
if (unlink(MOUNTED "~") == -1)
{
errexit(62, _("Can't remove %s~\n"), MOUNTED);
}
if (ncpm_normal()) {
errexit(90, _("Cannot relinquish superuser rights: %s\n"), strerror(EPERM));
}
}
static int __proc_option(const struct optinfo* opts, struct ncp_mount_info* info, const char* opt, const char* param) {
const struct optinfo* optr;
for (optr = opts; optr->option; optr++) {
if (!strcmp(optr->option, opt) || ((opt[0] == optr->shortopt) && (opt[1] == 0))) {
if (param) {
if (optr->flags & FN_STRING)
((void (*)(struct ncp_mount_info*, const char*))(optr->proc))(info, param);
else if (optr->flags & FN_INT) {
unsigned int i;
char* end;
i = strtoul(param, &end, 10);
if (end && *end && !isspace(*end)) {
errexit(24, _("Value `%s' for option `%s' is not a number\n"), param, opt);
}
((void (*)(struct ncp_mount_info*, unsigned int))(optr->proc))(info, i);
} else {
fprintf(stderr, _("Ignoring unneeded value for option `%s'\n"), opt);
((void (*)(struct ncp_mount_info*, unsigned int))(optr->proc))(info, optr->param);
}
} else {
if (!(optr->flags & FN_NOPARAM)) {
errexit(25, _("Required parameter for option `%s' missing\n"), opt);
}
((void (*)(struct ncp_mount_info*, unsigned int))(optr->proc))(info, optr->param);
}
return 0;
}
}
return -1;
}
static void opt_set_flags(struct ncp_mount_info* info, unsigned int param) {
info->flags |= param;
}
static void opt_clear_flags(struct ncp_mount_info* info, unsigned int param) {
info->flags &= ~param;
}
static void opt_clear_flags_su(struct ncp_mount_info* info, unsigned int param) {
if (info->flags & param) {
if (suser()) {
info->flags &= ~param;
return;
}
errexit(82, _("You are not allowed to clear nosuid and nodev flags\n"));
}
}
static void opt_clear_noexec(struct ncp_mount_info* info, unsigned int param) {
if (info->flags & param) {
if (suser() || myuid == info->mdata.uid) {
info->flags &= ~param;
return;
}
errexit(83, _("You are not allowed to clear noexec flag\n"));
}
}
static void opt_remount(struct ncp_mount_info* info, unsigned int param) __attribute__((noreturn));
static void opt_remount(UNUSED(struct ncp_mount_info* info), UNUSED(unsigned int param)) {
errexit(7, _("Remounting not supported, sorry\n"));
}
static void opt_set_mount_soft(struct ncp_mount_info* info, unsigned int param) {
info->mdata.flags.mount_soft = param;
}
static void opt_set_mount_timeout(struct ncp_mount_info* info, unsigned int param) {
if ((param < 1) || (param > 900)) {
errexit(8, _("Timeout must be between 1 and 900 secs inclusive\n"));
}
info->mdata.time_out = param;
}
static void opt_set_mount_retry(struct ncp_mount_info* info, unsigned int param) {
if ((param < 1) || (param > 0x10000)) {
errexit(9, _("Retry count must be between 1 and 65536 inclusive\n"));
}
info->mdata.retry_count = param;
}
static void opt_set_mount_strong(struct ncp_mount_info* info, unsigned int param) {
info->mdata.flags.mount_strong = param;
}
static void opt_set_mount_extras(struct ncp_mount_info* info, unsigned int param) {
info->mdata.flags.mount_extras = param;
}
static void opt_set_mount_symlinks(struct ncp_mount_info* info, unsigned int param) {
info->mdata.flags.mount_symlinks = param;
}
static void opt_set_mount_no_nfs(struct ncp_mount_info* info, unsigned int param) {
info->mdata.flags.mount_no_nfs = param;
}
static void opt_set_mount_no_os2(struct ncp_mount_info* info, unsigned int param) {
info->mdata.flags.mount_no_os2 = param;
}
static void opt_set_mount_nfs_extras(struct ncp_mount_info* info, unsigned int param) {
info->mdata.flags.mount_nfs_extras = param;
}
static void opt_set_server(struct ncp_mount_info* info, const char* param) {
if (strlen(param) >= sizeof(((const struct ncp_conn_spec*)param)->server)) {
errexit(17, _("Specified server name `%s' is too long\n"), param);
}
info->server = param;
}
static void opt_set_server_name(struct ncp_mount_info* info, const char* param) {
info->server_name = param;
}
static void opt_set_sig_level(struct ncp_mount_info* info, unsigned int param) {
if (param > 3) {
errexit(20, _("NCP signature level must be number between 0 and 3. You specified %u\n"), param);
}
info->sig_level = param;
}
static void opt_set_ttl(struct ncp_mount_info* info, unsigned int param) {
if (param > 20000) {
errexit(21, _("NCP cache time to live must be less than 20000 ms. You specified %u\n"), param);
}
info->dentry_ttl = param;
}
static void opt_set_file_mode(struct ncp_mount_info* info, const char* param) {
char* end;
info->mdata.file_mode = strtoul(param, &end, 8);
if (end && *end && !isspace(*end)) {
errexit(22, _("File mode `%s' is not valid octal number\n"), param);
}
}
static void opt_set_dir_mode(struct ncp_mount_info* info, const char* param) {
char* end;
info->mdata.dir_mode = strtoul(param, &end, 8);
if (end && *end && !isspace(*end)) {
errexit(23, _("Directory mode `%s' is not valid octal number\n"), param);
}
}
static void opt_set_iocharset(struct ncp_mount_info* info, const char* param) {
if (strlen(param) >= sizeof(info->nls_cs.iocharset)) {
errexit(128, _("I/O charset name `%s' is too long\n"), param);
}
strcpy(info->nls_cs.iocharset, param);
}
static void opt_set_codepage(struct ncp_mount_info* info, const char* param) {
if (strlen(param) >= sizeof(info->nls_cs.codepage)) {
errexit(128, _("Codepage name `%s' is too long\n"), param);
}
strcpy(info->nls_cs.codepage, param);
}
static void opt_not_implemented(UNUSED(struct ncp_mount_info* info), UNUSED(unsigned int param)) {
/* noop */
}
static void opt_set_transport(struct ncp_mount_info* info, unsigned int param) {
info->nt.value = param;
info->nt.valid = 1;
}
static void opt_set_version(struct ncp_mount_info* info, unsigned int param) {
info->version = param;
}
static struct optinfo globopts[] = {
{0, "ro", FN_NOPARAM, opt_set_flags, MS_RDONLY},
{0, "rw", FN_NOPARAM, opt_clear_flags, MS_RDONLY},
{0, "nosuid", FN_NOPARAM, opt_set_flags, MS_NOSUID},
{0, "suid", FN_NOPARAM, opt_clear_flags_su, MS_NOSUID},
{0, "nodev", FN_NOPARAM, opt_set_flags, MS_NODEV},
{0, "dev", FN_NOPARAM, opt_clear_flags_su, MS_NODEV},
{0, "noexec", FN_NOPARAM, opt_set_flags, MS_NOEXEC},
{0, "exec", FN_NOPARAM, opt_clear_noexec, MS_NOEXEC},
{0, "sync", FN_NOPARAM, opt_set_flags, MS_SYNCHRONOUS},
{0, "async", FN_NOPARAM, opt_clear_flags, MS_SYNCHRONOUS},
{0, "mand", FN_NOPARAM, opt_set_flags, MS_MANDLOCK},
{0, "nomand", FN_NOPARAM, opt_clear_flags, MS_MANDLOCK},
{0, "noatime", FN_NOPARAM, opt_set_flags, MS_NOATIME},
{0, "atime", FN_NOPARAM, opt_clear_flags, MS_NOATIME},
{0, "nodiratime", FN_NOPARAM, opt_not_implemented, MS_NODIRATIME}, /* does not exist in 2.0 kernel */
{0, "remount", FN_NOPARAM, opt_remount, 0},
{0, "soft", FN_NOPARAM, opt_set_mount_soft, 1},
{0, "hard", FN_NOPARAM, opt_set_mount_soft, 0},
{'t', "timeo", FN_INT, opt_set_mount_timeout, 60},
{'t', "timeout", FN_INT, opt_set_mount_timeout, 60},
{'r', "retry", FN_INT, opt_set_mount_retry, 5},
{'S', "server", FN_STRING, opt_set_server, 0},
{'s', "strong", FN_NOPARAM, opt_set_mount_strong, 1},
{0, "nostrong", FN_NOPARAM, opt_set_mount_strong, 0},
{0, "symlinks", FN_NOPARAM, opt_set_mount_symlinks, 1},
{0, "nosymlinks", FN_NOPARAM, opt_set_mount_symlinks, 0},
{0, "extras", FN_NOPARAM, opt_set_mount_extras, 1},
{0, "noextras", FN_NOPARAM, opt_set_mount_extras, 0},
{0, "nfsextras", FN_NOPARAM, opt_set_mount_nfs_extras, 1},
{0, "nonfsextras", FN_NOPARAM, opt_set_mount_nfs_extras, 0},
{0, "nonfs", FN_NOPARAM, opt_set_mount_no_nfs, 1},
{0, "noos2", FN_NOPARAM, opt_set_mount_no_os2, 1},
{0, "nolong", FN_NOPARAM, opt_set_mount_no_os2, 1},
{'A', "ipserver", FN_STRING, opt_set_server_name, 0},
{'i', "signature", FN_INT, opt_set_sig_level, 0},
{'f', "mode", FN_STRING, opt_set_file_mode, 0},
{'f', "filemode", FN_STRING, opt_set_file_mode, 0},
{'d', "dirmode", FN_STRING, opt_set_dir_mode, 0},
{'y', "iocharset", FN_STRING, opt_set_iocharset, 0},
{'p', "codepage", FN_STRING, opt_set_codepage, 0},
{0, "ttl", FN_INT, opt_set_ttl, 0},
{0, "tcp", FN_NOPARAM, opt_set_transport, NT_TCP},
{0, "udp", FN_NOPARAM, opt_set_transport, NT_UDP},
{0, "ipx", FN_NOPARAM, opt_set_transport, NT_IPX},
{0, "version", FN_INT, opt_set_version, 0},
/* silently ignore "auto" and "noauto". They are used by 'mount -a',
but they are passed down to mount.ncp by bug in mount */
{0, "auto", FN_NOPARAM, opt_set_flags, 0},
{0, "noauto", FN_NOPARAM, opt_set_flags, 0},
{0, NULL, 0, NULL, 0}
};
void proc_option(const struct optinfo* opts, struct ncp_mount_info* info, const char* opt, const char* param) {
if (__proc_option(opts, info, opt, param) &&
__proc_option(extopts, info, opt, param) &&
__proc_option(globopts, info, opt, param)) {
fprintf(stderr, _("Unknown option `%s', ignoring it\n"), opt);
}
}
int proc_aftermount(const struct ncp_mount_info* info, NWCONN_HANDLE* pconn) {
NWCONN_HANDLE conn;
int err;
if ((err = ncp_open_mount(info->mdata.mount_point, &conn)) != 0) {
mycom_err(err, _("attempt to open mount point"));
return 52;
}
if ((info->nls_cs.codepage[0] != 0) || (info->nls_cs.iocharset[0] != 0)) {
int i;
if (ncpm_suser()) {
fprintf(stderr, _("Cannot switch to superuser: %s\n"), strerror(errno));
return 90;
}
i = ioctl(ncp_get_fid(conn), NCP_IOC_SETCHARSETS, &info->nls_cs);
if (i && (errno == EINVAL)) {
struct ncp_nls_ioctl_old old_nls;
const char* p = info->nls_cs.codepage;
/* skip `cp' */
while (*p && !isdigit(*p)) p++;
old_nls.codepage = strtoul(p, NULL, 0);
strcpy(old_nls.iocharset, info->nls_cs.iocharset);
i = ioctl(ncp_get_fid(conn), NCP_IOC_SETCHARSETS_OLD, &old_nls);
}
if (ncpm_normal()) {
fprintf(stderr, _("Cannot relinquish superuser rights: %s\n"), strerror(-errno));
return 91;
}
if (i) {
if (errno == EINVAL || errno == ENOTTY) {
fprintf(stderr, _("Your kernel does not support character mapping. You should upgrade to latest version.\n"));
} else {
perror(_("Warning: Unable to load NLS charsets"));
}
}
}
if (info->dentry_ttl) {
err = ncp_set_dentry_ttl(conn, info->dentry_ttl);
if (err == EINVAL) {
fprintf(stderr, _("Your kernel does not support filename caching. You should upgrade to latest kernel version.\n"));
} else if (err != 0) {
fprintf(stderr, _("Warning: Cannot enable filename caching: %s\n"), strnwerror(err));
}
}
if (info->sig_level >= 0) {
size_t ln;
err = NWCCGetConnInfo(conn, NWCC_INFO_MAX_PACKET_SIZE, sizeof(ln), &ln);
if (!err)
err = ncp_renegotiate_siglevel(conn, ln, info->sig_level);
if (err) {
ncp_close(conn);
eprintf( _("Unable to negotiate requested security level: %s\n"), strnwerror(err));
return 53;
}
}
*pconn = conn;
return 0;
}
int proc_buildconn(struct ncp_mount_info* info) {
struct sockaddr_ipx addr;
socklen_t addrlen;
#ifdef CONFIG_NATIVE_UNIX
if (info->mdata.serv_addr.sipx_family == AF_UNIX) {
info->mdata.ncp_fd = socket(PF_UNIX, SOCK_DGRAM, 0);
if (info->mdata.ncp_fd == -1) {
mycom_err(errno, _("opening ncp_socket"));
return 37;
}
info->mdata.wdog_fd = -1;
info->mdata.message_fd = -1;
memset(&addr, 0, sizeof(addr));
addr.sipx_family = AF_UNIX;
addrlen = 2;
} else
#endif
#ifdef CONFIG_NATIVE_IP
if (info->mdata.serv_addr.sipx_family == AF_INET) {
if (info->nt.valid && info->nt.value == NT_TCP) {
info->mdata.ncp_fd = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
info->mdata.nt_type = NT_TCP;
} else if (info->nt.valid && info->nt.value != NT_UDP) {
eprintf("%s: %s\n", progname, _("Invalid transport requested"));
return 38;
} else {
info->mdata.ncp_fd = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP);
info->mdata.nt_type = NT_UDP;
}
if (info->mdata.ncp_fd == -1) {
mycom_err(errno, _("opening ncp_socket"));
return 39;
}
info->mdata.wdog_fd = -1;
info->mdata.message_fd = -1;
memset(&addr, 0, sizeof(addr));
addr.sipx_family = AF_INET;
addrlen = 16;
} else
#endif /* CONFIG_NATIVE_IP */
#ifdef CONFIG_NATIVE_IPX
if (info->mdata.serv_addr.sipx_family == AF_IPX) {
if (info->nt.valid && info->nt.value != NT_IPX) {
eprintf("%s: %s\n", progname, _("Invalid transport requested"));
return 40;
}
info->mdata.nt_type = NT_IPX;
info->mdata.ncp_fd = socket(AF_IPX, SOCK_DGRAM, PF_IPX);
if (info->mdata.ncp_fd == -1)
{
mycom_err(errno, _("opening ncp_socket"));
return 41;
}
info->mdata.wdog_fd = socket(AF_IPX, SOCK_DGRAM, PF_IPX);
if (info->mdata.wdog_fd == -1)
{
eprintf(_("%s: Could not open wdog socket: %s\n"),
progname,strerror(errno));
return 42;
}
memset(&addr, 0, sizeof(addr));
addr.sipx_family = AF_IPX;
addr.sipx_type = NCP_PTYPE;
addrlen = 16;
} else
#endif /* CONFIG_NATIVE_IPX */
{
eprintf(_("No transport available\n"));
return 43;
}
if (bind(info->mdata.ncp_fd, (struct sockaddr *) &addr, addrlen) == -1)
{
eprintf(_("bind failed: %s\n"), strerror(errno));
fprintf(stderr,
_("\nMaybe you want to use \n"
"ipx_configure --auto_interface=on --auto_primary=on\n"
"and try again after waiting a minute.\n\n"));
return 44;
}
#ifdef CONFIG_NATIVE_IPX
if (info->mdata.serv_addr.sipx_family == AF_IPX) {
addrlen = sizeof(addr);
if (getsockname(info->mdata.ncp_fd, (struct sockaddr *) &addr, &addrlen) == -1)
{
perror(_("getsockname ncp socketfailed"));
close(info->mdata.ncp_fd);
close(info->mdata.wdog_fd);
return 45;
}
addr.sipx_port = htons(ntohs(addr.sipx_port) + 1);
if (bind(info->mdata.wdog_fd, (struct sockaddr *) &addr, sizeof(addr)) == -1)
{
eprintf(_("bind(wdog_sock, ): %s\n"),
strerror(errno));
return 46;
}
info->mdata.message_fd = socket(AF_IPX, SOCK_DGRAM, PF_IPX);
if (info->mdata.message_fd == -1)
{
eprintf(_("Could not open message socket: %s\n"),
strerror(errno));
return 47;
}
addr.sipx_port = htons(ntohs(addr.sipx_port) + 1);
if (bind(info->mdata.message_fd, (struct sockaddr *) &addr, sizeof(addr)) == -1)
{
eprintf(_("bind(message_sock, ): %s\n"),
strerror(errno));
return 48;
}
}
#endif /* CONFIG_NATIVE_IPX */
#ifdef CONFIG_NATIVE_UNIX
if (info->mdata.serv_addr.sipx_family == AF_UNIX) {
if (connect(info->mdata.ncp_fd, (struct sockaddr *) &info->mdata.serv_addr, 2 + 6)) {
eprintf(_("connect(ncp_fd, ): %s\n"), strerror(errno));
return 49;
}
}
#endif
return 0;
}
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