b789954d34
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@125 ec53bebd-3082-4978-b11e-865c3cabbd6b
331 lines
6.9 KiB
C
331 lines
6.9 KiB
C
#include "config.h"
|
|
#include "protos.h"
|
|
|
|
#include <stdio.h>
|
|
#include <sys/types.h>
|
|
#include <unistd.h>
|
|
#include <sys/ioctl.h>
|
|
#ifdef HAVE_SYS_FILIO_H
|
|
#include <sys/filio.h>
|
|
#endif
|
|
|
|
#include <signal.h>
|
|
#include <setjmp.h>
|
|
#include <errno.h>
|
|
|
|
#include <krb.h>
|
|
#include <kafs.h>
|
|
|
|
#include "afssysdefs.h"
|
|
|
|
#define AUTH_SUPERUSER "afs"
|
|
|
|
/*
|
|
* Here only ASCII characters are relevant.
|
|
*/
|
|
|
|
#define IsAsciiLower(c) ('a' <= (c) && (c) <= 'z')
|
|
|
|
#define ToAsciiUpper(c) ((c) - 'a' + 'A')
|
|
|
|
static void
|
|
foldup(a, b)
|
|
char *a, *b;
|
|
{
|
|
for (; *b; a++, b++)
|
|
if (IsAsciiLower(*b))
|
|
*a = ToAsciiUpper(*b);
|
|
else
|
|
*a = *b;
|
|
*a = '\0';
|
|
}
|
|
|
|
#define _PATH_THISCELL "/usr/vice/etc/ThisCell"
|
|
|
|
static char *
|
|
k_cell()
|
|
{
|
|
static char cell[64];
|
|
FILE *f = fopen(_PATH_THISCELL, "r");
|
|
if (f == 0)
|
|
return 0;
|
|
fscanf(f, "%s\n", cell);
|
|
if (cell[0] != 0)
|
|
return cell;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
get_cred(char *princ, char *inst, char *krealm, CREDENTIALS *c, KTEXT_ST *tkt)
|
|
{
|
|
int k_errno = krb_get_cred(princ, inst, krealm, c);
|
|
if (k_errno != KSUCCESS)
|
|
{
|
|
k_errno = krb_mk_req(tkt, princ, inst, krealm, 0);
|
|
if (k_errno == KSUCCESS)
|
|
k_errno = krb_get_cred(princ, inst, krealm, c);
|
|
}
|
|
return k_errno;
|
|
}
|
|
|
|
int
|
|
k_afsklog(char *cell, char *krealm)
|
|
{
|
|
int k_errno;
|
|
CREDENTIALS c;
|
|
KTEXT_ST ticket;
|
|
char realm[REALM_SZ];
|
|
char CELL[64];
|
|
|
|
if (!k_hasafs())
|
|
return KSUCCESS;
|
|
|
|
if (cell == 0 || cell[0] == 0)
|
|
cell = k_cell();
|
|
if (cell == 0)
|
|
return KSUCCESS; /* Not running AFS */
|
|
foldup(CELL, cell);
|
|
|
|
if (krealm == 0 || krealm[0] == 0)
|
|
{
|
|
k_errno = krb_get_lrealm(realm, 0);
|
|
if (k_errno != KSUCCESS)
|
|
return k_errno;
|
|
krealm = realm;
|
|
}
|
|
|
|
/* First we try afs.cell@REALM, if there is no such thing try
|
|
* afs@CELL instead. */
|
|
k_errno = get_cred(AUTH_SUPERUSER, cell, krealm, &c, &ticket);
|
|
if (k_errno != KSUCCESS)
|
|
k_errno = get_cred(AUTH_SUPERUSER, "", CELL, &c, &ticket);
|
|
|
|
if (k_errno == KSUCCESS)
|
|
{
|
|
struct ViceIoctl parms;
|
|
struct ClearToken ct;
|
|
int32_t sizeof_x;
|
|
char buf[2048], *t;
|
|
|
|
/*
|
|
* Build a struct ClearToken
|
|
*/
|
|
ct.AuthHandle = c.kvno;
|
|
bcopy((char *)c.session, ct.HandShakeKey, sizeof(c.session));
|
|
ct.ViceId = getuid(); /* is this always valid? */
|
|
ct.BeginTimestamp = 1 + c.issue_date;
|
|
ct.EndTimestamp = krb_life_to_time(c.issue_date, c.lifetime);
|
|
|
|
t = buf;
|
|
/*
|
|
* length of secret token followed by secret token
|
|
*/
|
|
sizeof_x = c.ticket_st.length;
|
|
bcopy((char *)&sizeof_x, t, sizeof(sizeof_x));
|
|
t += sizeof(sizeof_x);
|
|
bcopy((char *)c.ticket_st.dat, t, sizeof_x);
|
|
t += sizeof_x;
|
|
/*
|
|
* length of clear token followed by clear token
|
|
*/
|
|
sizeof_x = sizeof(ct);
|
|
bcopy((char *)&sizeof_x, t, sizeof(sizeof_x));
|
|
t += sizeof(sizeof_x);
|
|
bcopy((char *)&ct, t, sizeof_x);
|
|
t += sizeof_x;
|
|
|
|
/*
|
|
* do *not* mark as primary cell
|
|
*/
|
|
sizeof_x = 0;
|
|
bcopy((char *)&sizeof_x, t, sizeof(sizeof_x));
|
|
t += sizeof(sizeof_x);
|
|
/*
|
|
* follow with cell name
|
|
*/
|
|
sizeof_x = strlen(cell) + 1;
|
|
bcopy(cell, t, sizeof_x);
|
|
t += sizeof_x;
|
|
|
|
/*
|
|
* Build argument block
|
|
*/
|
|
parms.in = buf;
|
|
parms.in_size = t - buf;
|
|
parms.out = 0;
|
|
parms.out_size = 0;
|
|
(void) k_pioctl(0, VIOCSETTOK, &parms, 0);
|
|
}
|
|
return k_errno;
|
|
}
|
|
|
|
#define NO_ENTRY_POINT 0
|
|
#define SINGLE_ENTRY_POINT 1
|
|
#define MULTIPLE_ENTRY_POINT 2
|
|
#define SINGLE_ENTRY_POINT2 3
|
|
#define AIX_ENTRY_POINTS 4
|
|
#define UNKNOWN_ENTRY_POINT 5
|
|
static int afs_entry_point = UNKNOWN_ENTRY_POINT;
|
|
|
|
int
|
|
k_pioctl(char *a_path,
|
|
int o_opcode,
|
|
struct ViceIoctl *a_paramsP,
|
|
int a_followSymlinks)
|
|
{
|
|
#ifdef AFS_SYSCALL
|
|
if (afs_entry_point == SINGLE_ENTRY_POINT)
|
|
return syscall(AFS_SYSCALL, AFSCALL_PIOCTL,
|
|
a_path, o_opcode, a_paramsP, a_followSymlinks);
|
|
#endif
|
|
|
|
#ifdef AFS_PIOCTL
|
|
if (afs_entry_point == MULTIPLE_ENTRY_POINT)
|
|
return syscall(AFS_PIOCTL,
|
|
a_path, o_opcode, a_paramsP, a_followSymlinks);
|
|
#endif
|
|
|
|
#ifdef AFS_SYSCALL2
|
|
if (afs_entry_point == SINGLE_ENTRY_POINT2)
|
|
return syscall(AFS_SYSCALL2, AFSCALL_PIOCTL,
|
|
a_path, o_opcode, a_paramsP, a_followSymlinks);
|
|
#endif
|
|
|
|
#ifdef _AIX
|
|
if (afs_entry_point == AIX_ENTRY_POINTS)
|
|
return lpioctl(a_path, o_opcode, a_paramsP, a_followSymlinks);
|
|
#endif
|
|
|
|
errno = ENOSYS;
|
|
kill(getpid(), SIGSYS); /* You loose! */
|
|
return -1;
|
|
}
|
|
|
|
int
|
|
k_unlog(void)
|
|
{
|
|
struct ViceIoctl parms;
|
|
bzero((char *)&parms, sizeof(parms));
|
|
return k_pioctl(0, VIOCUNLOG, &parms, 0);
|
|
}
|
|
|
|
int
|
|
k_setpag(void)
|
|
{
|
|
#ifdef AFS_SYSCALL
|
|
if (afs_entry_point == SINGLE_ENTRY_POINT)
|
|
return syscall(AFS_SYSCALL, AFSCALL_SETPAG);
|
|
#endif
|
|
|
|
#ifdef AFS_SETPAG
|
|
if (afs_entry_point == MULTIPLE_ENTRY_POINT)
|
|
return syscall(AFS_SETPAG);
|
|
#endif
|
|
|
|
#ifdef AFS_SYSCALL2
|
|
if (afs_entry_point == SINGLE_ENTRY_POINT2)
|
|
return syscall(AFS_SYSCALL2, AFSCALL_SETPAG);
|
|
#endif
|
|
|
|
#ifdef _AIX
|
|
if (afs_entry_point == AIX_ENTRY_POINTS)
|
|
return lsetpag();
|
|
#endif
|
|
|
|
errno = ENOSYS;
|
|
kill(getpid(), SIGSYS); /* You loose! */
|
|
return -1;
|
|
}
|
|
|
|
static jmp_buf catch_SIGSYS;
|
|
|
|
static void
|
|
SIGSYS_handler()
|
|
{
|
|
errno = 0;
|
|
signal(SIGSYS, SIGSYS_handler); /* Need to reinstall handler on SYSV */
|
|
longjmp(catch_SIGSYS, 1);
|
|
}
|
|
|
|
int
|
|
k_hasafs(void)
|
|
{
|
|
int saved_errno;
|
|
RETSIGTYPE (*saved_func)();
|
|
struct ViceIoctl parms;
|
|
|
|
/*
|
|
* Already checked presence of AFS syscalls?
|
|
*/
|
|
if (afs_entry_point != UNKNOWN_ENTRY_POINT)
|
|
return afs_entry_point != NO_ENTRY_POINT;
|
|
|
|
/*
|
|
* Probe kernel for AFS specific syscalls,
|
|
* they (currently) come in two flavors.
|
|
* If the syscall is absent we recive a SIGSYS.
|
|
*/
|
|
afs_entry_point = NO_ENTRY_POINT;
|
|
bzero(&parms, sizeof(parms));
|
|
|
|
saved_errno = errno;
|
|
saved_func = signal(SIGSYS, SIGSYS_handler);
|
|
|
|
#ifdef AFS_SYSCALL
|
|
if (setjmp(catch_SIGSYS) == 0)
|
|
{
|
|
syscall(AFS_SYSCALL, AFSCALL_PIOCTL,
|
|
0, VIOCSETTOK, &parms, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
|
|
if (errno == EINVAL)
|
|
{
|
|
afs_entry_point = SINGLE_ENTRY_POINT;
|
|
goto done;
|
|
}
|
|
}
|
|
#endif /* AFS_SYSCALL */
|
|
|
|
#ifdef AFS_PIOCTL
|
|
if (setjmp(catch_SIGSYS) == 0)
|
|
{
|
|
syscall(AFS_PIOCTL,
|
|
0, VIOCSETTOK, &parms, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
|
|
if (errno == EINVAL)
|
|
{
|
|
afs_entry_point = MULTIPLE_ENTRY_POINT;
|
|
goto done;
|
|
}
|
|
}
|
|
#endif /* AFS_PIOCTL */
|
|
|
|
#ifdef AFS_SYSCALL2
|
|
if (setjmp(catch_SIGSYS) == 0)
|
|
{
|
|
syscall(AFS_SYSCALL2, AFSCALL_PIOCTL,
|
|
0, VIOCSETTOK, &parms, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
|
|
if (errno == EINVAL)
|
|
{
|
|
afs_entry_point = SINGLE_ENTRY_POINT2;
|
|
goto done;
|
|
}
|
|
}
|
|
#endif /* AFS_SYSCALL */
|
|
|
|
#ifdef _AIX
|
|
if (setjmp(catch_SIGSYS) == 0)
|
|
{
|
|
lpioctl(0, 0, 0, 0);
|
|
if (errno == EINVAL)
|
|
{
|
|
afs_entry_point = AIX_ENTRY_POINTS;
|
|
goto done;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
done:
|
|
(void) signal(SIGSYS, saved_func);
|
|
errno = saved_errno;
|
|
return afs_entry_point != NO_ENTRY_POINT;
|
|
}
|