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/*
* $FreeBSD$
* $Source: /home/ncvs/src/eBones/lib/librkinit/rk_util.c,v $
* $Author: gibbs $
*
* This file contains internal routines for general use by the rkinit
* library and server.
*
* See the comment at the top of rk_lib.c for a description of the naming
* conventions used within the rkinit library.
*/
#if !defined(lint) && !defined(SABER) && !defined(LOCORE) && defined(RCS_HDRS)
static char *rcsid = "$FreeBSD$";
#endif /* lint || SABER || LOCORE || RCS_HDRS */
#include <stdio.h>
#include <sys/types.h>
#include <string.h>
#include <setjmp.h>
#include <signal.h>
#include <sys/time.h>
#ifdef DEBUG
#include <syslog.h>
#endif /* DEBUG */
#include <rkinit.h>
#include <rkinit_private.h>
#include <rkinit_err.h>
#define RKINIT_TIMEOUTVAL 60
static char errbuf[BUFSIZ];
static jmp_buf timeout_env;
#ifdef DEBUG
static int _rkinit_server_ = FALSE;
#ifdef __STDC__
void rki_dmsg(char *string)
#else
void rki_dmsg(string)
char *string;
#endif /* __STDC__ */
{
if (_rkinit_server_)
syslog(LOG_NOTICE, string);
else
printf("%s\n", string);
}
#ifdef __STDC__
void rki_i_am_server(void)
#else
void rki_i_am_server()
#endif /* __STDC__ */
{
_rkinit_server_ = TRUE;
}
#else /* DEBUG */
#ifdef __STDC__
void rki_dmsg(char *string)
#else
void rki_dmsg(string)
char *string;
#endif /* __STDC__ */
{
return;
}
#endif /* DEBUG */
#ifdef __STDC__
const char *rki_mt_to_string(int mt)
#else
const char *rki_mt_to_string(mt)
int mt;
#endif /* __STDC__ */
{
char *string = 0;
switch(mt) {
case MT_STATUS:
string = "Status message";
break;
case MT_CVERSION:
string = "Client version";
break;
case MT_SVERSION:
string = "Server version";
break;
case MT_RKINIT_INFO:
string = "Rkinit information";
break;
case MT_SKDC:
string = "Server kdc packet";
break;
case MT_CKDC:
string = "Client kdc packet";
break;
case MT_AUTH:
string = "Authenticator";
break;
case MT_DROP:
string = "Drop server";
break;
default:
string = "Unknown message type";
break;
}
return(string);
}
#ifdef __STDC__
int rki_choose_version(int *version)
#else
int rki_choose_version(version)
int *version;
#endif /* __STDC__ */
{
int s_lversion; /* lowest version number server supports */
int s_hversion; /* highest version number server supports */
int status = RKINIT_SUCCESS;
if ((status =
rki_rpc_exchange_version_info(RKINIT_LVERSION, RKINIT_HVERSION,
&s_lversion,
&s_hversion)) != RKINIT_SUCCESS)
return(status);
*version = min(RKINIT_HVERSION, s_hversion);
if (*version < max(RKINIT_LVERSION, s_lversion)) {
sprintf(errbuf,
"Can't run version %d client against version %d server.",
RKINIT_HVERSION, s_hversion);
rkinit_errmsg(errbuf);
status = RKINIT_VERSION;
}
return(status);
}
#ifdef __STDC__
int rki_send_rkinit_info(int version, rkinit_info *info)
#else
int rki_send_rkinit_info(version, info)
int version;
rkinit_info *info;
#endif /* __STDC__ */
{
int status = 0;
if ((status = rki_rpc_send_rkinit_info(info)) != RKINIT_SUCCESS)
return(status);
return(rki_rpc_get_status());
}
#ifdef __STDC__
static void rki_timeout(int signal)
#else
static void rki_timeout(signal)
int signal;
#endif /* __STDC__ */
{
sprintf(errbuf, "%d seconds exceeded.", RKINIT_TIMEOUTVAL);
rkinit_errmsg(errbuf);
longjmp(timeout_env, RKINIT_TIMEOUT);
return;
}
#ifdef __STDC__
static void set_timer(int secs)
#else
static void set_timer(secs)
int secs;
#endif /* __STDC__ */
{
struct itimerval timer; /* Time structure for timeout */
/* Set up an itimer structure to send an alarm signal after TIMEOUT
seconds. */
timer.it_interval.tv_sec = secs;
timer.it_interval.tv_usec = 0;
timer.it_value = timer.it_interval;
(void) setitimer (ITIMER_REAL, &timer, (struct itimerval *)0);
}
#ifdef __STDC__
void (*rki_setup_timer(jmp_buf env))(int)
#else
void (*rki_setup_timer(env))(int)
jmp_buf env;
#endif /* __STDC__ */
{
bcopy((char *)env, (char *)timeout_env, sizeof(jmp_buf));
set_timer(RKINIT_TIMEOUTVAL);
return(signal(SIGALRM, rki_timeout));
}
#ifdef __STDC__
void rki_restore_timer(void (*old_alrm)(int))
#else
void rki_restore_timer(old_alrm)
void (*old_alrm)(int);
#endif /* __STDC__ */
{
set_timer(0);
(void) signal(SIGALRM, old_alrm);
}
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