/* $OpenLDAP$ */
/*
 * Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
 * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
 */

#include "portable.h"

#include <stdio.h>

#include <ac/ctype.h>
#include <ac/stdarg.h>
#include <ac/string.h>

#include "lber-int.h"

#define	ber_log_check(errlvl, loglvl)	((errlvl) & (loglvl))

BER_LOG_FN ber_int_log_proc = NULL;

/*
 * We don't just set ber_pvt_err_file to stderr here, because in NT,
 * stderr is a symbol imported from a DLL. As such, the compiler
 * doesn't recognize the symbol as having a constant address. Thus
 * we set ber_pvt_err_file to stderr later, when it first gets
 * referenced.
 */
FILE *ber_pvt_err_file = NULL;

/*
 * ber errno
 */
BER_ERRNO_FN ber_int_errno_fn = NULL;

int * ber_errno_addr(void)
{
	static int ber_int_errno = LBER_ERROR_NONE;

	if( ber_int_errno_fn ) {
		return (*ber_int_errno_fn)();
	}

	return &ber_int_errno;
}

/*
 * Print stuff
 */
void ber_error_print( LDAP_CONST char *data )
{
	assert( data != NULL );

	if (!ber_pvt_err_file) ber_pvt_err_file = stderr;

	fputs( data, ber_pvt_err_file );

	/* Print to both streams */
	if (ber_pvt_err_file != stderr) {
		fputs( data, stderr );
		fflush( stderr );
	}

	fflush( ber_pvt_err_file );
}

BER_LOG_PRINT_FN ber_pvt_log_print = ber_error_print;

/*
 * lber log 
 */

int ber_pvt_log_output(
	const char *subsystem,
	int level,
	const char *fmt,
	... )
{
	char buf[ 1024 ];
	va_list vl;
	va_start( vl, fmt );

	if ( ber_int_log_proc != NULL )
	{
		ber_int_log_proc( ber_pvt_err_file, subsystem, level, fmt, vl );
	}
	else
	{
            int level;
            ber_get_option( NULL, LBER_OPT_BER_DEBUG, &level );
#ifdef HAVE_VSNPRINTF
            buf[sizeof(buf) - 1] = '\0';
            vsnprintf( buf, sizeof(buf)-1, fmt, vl );
#elif HAVE_VSPRINTF
            vsprintf( buf, fmt, vl ); /* hope it's not too long */
#else
                /* use doprnt() */
#error "vsprintf() required.";
#endif
            if ( ber_log_check( LDAP_DEBUG_BER, level ) )
                (*ber_pvt_log_print)( buf );
        }
	va_end(vl);

	return 1;
}
	
int ber_pvt_log_printf( int errlvl, int loglvl, const char *fmt, ... )
{
	char buf[ 1024 ];
	va_list ap;

	assert( fmt != NULL );

	if ( !ber_log_check( errlvl, loglvl )) {
		return 0;
	}

	va_start( ap, fmt );

#ifdef HAVE_VSNPRINTF
	buf[sizeof(buf) - 1] = '\0';
	vsnprintf( buf, sizeof(buf)-1, fmt, ap );
#elif HAVE_VSPRINTF
	vsprintf( buf, fmt, ap ); /* hope it's not too long */
#else
	/* use doprnt() */
#error "vsprintf() required."
#endif

	va_end(ap);

	(*ber_pvt_log_print)( buf );
	return 1;
}

#if 0
static int ber_log_puts(int errlvl, int loglvl, char *buf)
{
	assert( buf != NULL );

	if ( !ber_log_check( errlvl, loglvl )) {
		return 0;
	}

	(*ber_pvt_log_print)( buf );
	return 1;
}
#endif

/*
 * Print arbitrary stuff, for debugging.
 */

int
ber_log_bprint(int errlvl,
	int loglvl,
	const char *data,
	ber_len_t len )
{
	assert( data != NULL );

	if ( !ber_log_check( errlvl, loglvl )) {
		return 0;
	}

	ber_bprint(data, len);
	return 1;
}

void
ber_bprint(
	LDAP_CONST char *data,
	ber_len_t len )
{
	static const char	hexdig[] = "0123456789abcdef";
#define BP_OFFSET 9
#define BP_GRAPH 60
#define BP_LEN	80
	char	line[ BP_LEN ];
	ber_len_t i;

	assert( data != NULL );

	/* in case len is zero */
	line[0] = '\n';
	line[1] = '\0';
	
	for ( i = 0 ; i < len ; i++ ) {
		int n = i % 16;
		unsigned off;

		if( !n ) {
			if( i ) (*ber_pvt_log_print)( line );
			memset( line, ' ', sizeof(line)-2 );
			line[sizeof(line)-2] = '\n';
			line[sizeof(line)-1] = '\0';

			off = i % 0x0ffffU;

			line[ 2 ] = hexdig[ 0x0f & (off >> 12) ];
			line[ 3 ] = hexdig[ 0x0f & (off >>  8) ];
			line[ 4 ] = hexdig[ 0x0f & (off >>  4) ];
			line[ 5 ] = hexdig[ 0x0f & off ];
			line[ 6 ] = ':';
		}

		off = BP_OFFSET + n*3 + ((n >= 8)?1:0);
		line[ off   ] = hexdig[ 0x0f & ( data[i] >> 4 ) ];
		line[ off+1 ] = hexdig[ 0x0f & data[i] ];
		
		off = BP_GRAPH + n + ((n >= 8)?1:0);

		if ( isprint( data[i] )) {
			line[ BP_GRAPH + n ] = data[i];
		} else {
			line[ BP_GRAPH + n ] = '.';
		}
	}

	(*ber_pvt_log_print)( line );
}

#ifdef NEW_LOGGING
int ber_output_dump(
	const char *subsys,
	int level,
	BerElement *ber,
	int inout )
{
    static const char	hexdig[] = "0123456789abcdef";
    char buf[132];
    ber_len_t len;
    char	line[ BP_LEN ];
    ber_len_t i;
    char *data = ber->ber_ptr;

    if ( inout == 1 ) {
        len = ber_pvt_ber_remaining(ber);
    } else {
        len = ber_pvt_ber_write(ber);
    }

    sprintf( buf, "ber_dump: buf=0x%08lx ptr=0x%08lx end=0x%08lx len=%ld\n",
             (long) ber->ber_buf,
             (long) ber->ber_ptr,
             (long) ber->ber_end,
             (long) len );

    (void) ber_pvt_log_output( subsys, level, "%s", buf );

#define BP_OFFSET 9
#define BP_GRAPH 60
#define BP_LEN	80

    assert( data != NULL );
        
    /* in case len is zero */
    line[0] = '\n';
    line[1] = '\0';
	
    for ( i = 0 ; i < len ; i++ ) {
        int n = i % 16;
        unsigned off;
        
        if( !n ) {
            if( i ) {
				(void) ber_pvt_log_output( subsys, level, "%s", line );
			}
            memset( line, ' ', sizeof(line)-2 );
            line[sizeof(line)-2] = '\n';
            line[sizeof(line)-1] = '\0';
            
            off = i % 0x0ffffU;

            line[ 2 ] = hexdig[ 0x0f & (off >> 12) ];
            line[ 3 ] = hexdig[ 0x0f & (off >>  8) ];
            line[ 4 ] = hexdig[ 0x0f & (off >>  4) ];
            line[ 5 ] = hexdig[ 0x0f & off ];
            line[ 6 ] = ':';
        }

        off = BP_OFFSET + n*3 + ((n >= 8)?1:0);
        line[ off   ] = hexdig[ 0x0f & ( data[i] >> 4 ) ];
        line[ off+1 ] = hexdig[ 0x0f & data[i] ];
        
        off = BP_GRAPH + n + ((n >= 8)?1:0);
        
        if ( isprint( data[i] )) {
            line[ BP_GRAPH + n ] = data[i];
        } else {
            line[ BP_GRAPH + n ] = '.';
        }
    }

    return ber_pvt_log_output( subsys, level, "%s", line );
}
#endif

int
ber_log_dump(
	int errlvl,
	int loglvl,
	BerElement *ber,
	int inout )
{
	assert( ber != NULL );
	assert( LBER_VALID( ber ) );

	if ( !ber_log_check( errlvl, loglvl )) {
		return 0;
	}

	ber_dump(ber, inout);
	return 1;
}

void
ber_dump(
	BerElement *ber,
	int inout )
{
	char buf[132];
	ber_len_t len;

	assert( ber != NULL );
	assert( LBER_VALID( ber ) );

	if ( inout == 1 ) {
		len = ber_pvt_ber_remaining(ber);
	} else {
		len = ber_pvt_ber_write(ber);
	}

	sprintf( buf, "ber_dump: buf=0x%08lx ptr=0x%08lx end=0x%08lx len=%ld\n",
	    (long) ber->ber_buf,
		(long) ber->ber_ptr,
		(long) ber->ber_end,
		(long) len );

	(void) (*ber_pvt_log_print)( buf );

	ber_bprint( ber->ber_ptr, len );
}

int
ber_log_sos_dump(
	int errlvl,
	int loglvl,
	Seqorset *sos )
{
	assert( sos != NULL );

	if ( !ber_log_check( errlvl, loglvl )) {
		return 0;
	}

	ber_sos_dump( sos );
	return 1;
}

void
ber_sos_dump(
	Seqorset *sos )
{
	char buf[132];

	assert( sos != NULL );

	(*ber_pvt_log_print)( "*** sos dump ***\n" );

	while ( sos != NULL ) {
		sprintf( buf, "ber_sos_dump: clen %ld first 0x%lx ptr 0x%lx\n",
		    (long) sos->sos_clen,
			(long) sos->sos_first,
			(long) sos->sos_ptr );
		(*ber_pvt_log_print)( buf );

		sprintf( buf, "              current len %ld contents:\n",
		    (long) (sos->sos_ptr - sos->sos_first) );
		(*ber_pvt_log_print)( buf );

		ber_bprint( sos->sos_first, sos->sos_ptr - sos->sos_first );

		sos = sos->sos_next;
	}

	(*ber_pvt_log_print)( "*** end dump ***\n" );
}