Adding upstream version 2.4.47+dfsg.upstream/2.4.47+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 944 insertions, 0 deletions

diff --git a/libraries/libldap/ldif.c b/libraries/libldap/ldif.c
new file mode 100644
index 0000000..ba36c22
--- /dev/null
+++ b/libraries/libldap/ldif.c
@@ -0,0 +1,944 @@
+/* ldif.c - routines for dealing with LDIF files */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2018 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* Portions Copyright (c) 1992-1996 Regents of the University of Michigan.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that this notice is preserved and that due credit is given
+ * to the University of Michigan at Ann Arbor.  The name of the
+ * University may not be used to endorse or promote products derived
+ * from this software without specific prior written permission.  This
+ * software is provided ``as is'' without express or implied warranty.
+ */
+/* This work was originally developed by the University of Michigan
+ * and distributed as part of U-MICH LDAP.
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+
+#include <ac/stdlib.h>
+#include <ac/ctype.h>
+
+#include <ac/string.h>
+#include <ac/socket.h>
+#include <ac/time.h>
+
+int ldif_debug = 0;
+
+#include "ldap_log.h"
+#include "lber_pvt.h"
+#include "ldif.h"
+
+#define RIGHT2			0x03
+#define RIGHT4			0x0f
+#define CONTINUED_LINE_MARKER	'\r'
+
+#ifdef CSRIMALLOC
+#define ber_memalloc malloc
+#define ber_memcalloc calloc
+#define ber_memrealloc realloc
+#define ber_strdup strdup
+#endif
+
+static const char nib2b64[0x40] =
+        "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+
+static const unsigned char b642nib[0x80] = {
+	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+	0xff, 0xff, 0xff, 0x3e, 0xff, 0xff, 0xff, 0x3f,
+	0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b,
+	0x3c, 0x3d, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+	0xff, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,
+	0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e,
+	0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16,
+	0x17, 0x18, 0x19, 0xff, 0xff, 0xff, 0xff, 0xff,
+	0xff, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20,
+	0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28,
+	0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30,
+	0x31, 0x32, 0x33, 0xff, 0xff, 0xff, 0xff, 0xff
+};
+
+/*
+ * ldif_parse_line - takes a line of the form "type:[:] value" and splits it
+ * into components "type" and "value".  if a double colon separates type from
+ * value, then value is encoded in base 64, and parse_line un-decodes it
+ * (in place) before returning. The type and value are stored in malloc'd
+ * memory which must be freed by the caller.
+ *
+ * ldif_parse_line2 - operates in-place on input buffer, returning type
+ * in-place. Will return value in-place if possible, (must malloc for
+ * fetched URLs). If freeval is NULL, all return data will be malloc'd
+ * and the input line will be unmodified. Otherwise freeval is set to
+ * True if the value was malloc'd.
+ */
+
+int
+ldif_parse_line(
+    LDAP_CONST char	*line,
+    char	**typep,
+    char	**valuep,
+    ber_len_t *vlenp
+)
+{
+	struct berval type, value;
+	int rc = ldif_parse_line2( (char *)line, &type, &value, NULL );
+
+	*typep = type.bv_val;
+	*valuep = value.bv_val;
+	*vlenp = value.bv_len;
+	return rc;
+}
+
+int
+ldif_parse_line2(
+    char	*line,
+	struct berval *type,
+	struct berval *value,
+	int		*freeval
+)
+{
+	char	*s, *p, *d; 
+	char	nib;
+	int	b64, url;
+
+	BER_BVZERO( type );
+	BER_BVZERO( value );
+
+	/* skip any leading space */
+	while ( isspace( (unsigned char) *line ) ) {
+		line++;
+	}
+
+	if ( freeval ) {
+		*freeval = 0;
+	} else {
+		line = ber_strdup( line );
+
+		if( line == NULL ) {
+			ber_pvt_log_printf( LDAP_DEBUG_ANY, ldif_debug,
+				_("ldif_parse_line: line malloc failed\n"));
+			return( -1 );
+		}
+	}
+
+	type->bv_val = line;
+
+	s = strchr( type->bv_val, ':' );
+
+	if ( s == NULL ) {
+		ber_pvt_log_printf( LDAP_DEBUG_PARSE, ldif_debug,
+			_("ldif_parse_line: missing ':' after %s\n"),
+			type->bv_val );
+		if ( !freeval ) ber_memfree( line );
+		return( -1 );
+	}
+
+	/* trim any space between type and : */
+	for ( p = &s[-1]; p > type->bv_val && isspace( * (unsigned char *) p ); p-- ) {
+		*p = '\0';
+	}
+	*s++ = '\0';
+	type->bv_len = s - type->bv_val - 1;
+
+	url = 0;
+	b64 = 0;
+
+	if ( *s == '<' ) {
+		s++;
+		url = 1;
+
+	} else if ( *s == ':' ) {
+		/* base 64 encoded value */
+		s++;
+		b64 = 1;
+	}
+
+	/* skip space between : and value */
+	while ( isspace( (unsigned char) *s ) ) {
+		s++;
+	}
+
+	/* check for continued line markers that should be deleted */
+	for ( p = s, d = s; *p; p++ ) {
+		if ( *p != CONTINUED_LINE_MARKER )
+			*d++ = *p;
+	}
+	*d = '\0';
+
+	if ( b64 ) {
+		char *byte = s;
+
+		if ( *s == '\0' ) {
+			/* no value is present, error out */
+			ber_pvt_log_printf( LDAP_DEBUG_PARSE, ldif_debug,
+				_("ldif_parse_line: %s missing base64 value\n"),
+				type->bv_val );
+			if ( !freeval ) ber_memfree( line );
+			return( -1 );
+		}
+
+		byte = value->bv_val = s;
+
+		for ( p = s, value->bv_len = 0; p < d; p += 4, value->bv_len += 3 ) {
+			int i;
+			for ( i = 0; i < 4; i++ ) {
+				if ( p[i] != '=' && (p[i] & 0x80 ||
+				    b642nib[ p[i] & 0x7f ] > 0x3f) ) {
+					ber_pvt_log_printf( LDAP_DEBUG_ANY, ldif_debug,
+						_("ldif_parse_line: %s: invalid base64 encoding"
+						" char (%c) 0x%x\n"),
+					    type->bv_val, p[i], p[i] );
+					if ( !freeval ) ber_memfree( line );
+					return( -1 );
+				}
+			}
+
+			/* first digit */
+			nib = b642nib[ p[0] & 0x7f ];
+			byte[0] = nib << 2;
+			/* second digit */
+			nib = b642nib[ p[1] & 0x7f ];
+			byte[0] |= nib >> 4;
+			byte[1] = (nib & RIGHT4) << 4;
+			/* third digit */
+			if ( p[2] == '=' ) {
+				value->bv_len += 1;
+				break;
+			}
+			nib = b642nib[ p[2] & 0x7f ];
+			byte[1] |= nib >> 2;
+			byte[2] = (nib & RIGHT2) << 6;
+			/* fourth digit */
+			if ( p[3] == '=' ) {
+				value->bv_len += 2;
+				break;
+			}
+			nib = b642nib[ p[3] & 0x7f ];
+			byte[2] |= nib;
+
+			byte += 3;
+		}
+		s[ value->bv_len ] = '\0';
+
+	} else if ( url ) {
+		if ( *s == '\0' ) {
+			/* no value is present, error out */
+			ber_pvt_log_printf( LDAP_DEBUG_PARSE, ldif_debug,
+				_("ldif_parse_line: %s missing URL value\n"),
+				type->bv_val );
+			if ( !freeval ) ber_memfree( line );
+			return( -1 );
+		}
+
+		if( ldif_fetch_url( s, &value->bv_val, &value->bv_len ) ) {
+			ber_pvt_log_printf( LDAP_DEBUG_ANY, ldif_debug,
+				_("ldif_parse_line: %s: URL \"%s\" fetch failed\n"),
+				type->bv_val, s );
+			if ( !freeval ) ber_memfree( line );
+			return( -1 );
+		}
+		if ( freeval ) *freeval = 1;
+
+	} else {
+		value->bv_val = s;
+		value->bv_len = (int) (d - s);
+	}
+
+	if ( !freeval ) {
+		struct berval bv = *type;
+
+		ber_dupbv( type, &bv );
+
+		if( BER_BVISNULL( type )) {
+			ber_pvt_log_printf( LDAP_DEBUG_ANY, ldif_debug,
+				_("ldif_parse_line: type malloc failed\n"));
+			if( url ) ber_memfree( value->bv_val );
+			ber_memfree( line );
+			return( -1 );
+		}
+
+		if( !url ) {
+			bv = *value;
+			ber_dupbv( value, &bv );
+			if( BER_BVISNULL( value )) {
+				ber_pvt_log_printf( LDAP_DEBUG_ANY, ldif_debug,
+					_("ldif_parse_line: value malloc failed\n"));
+				ber_memfree( type->bv_val );
+				ber_memfree( line );
+				return( -1 );
+			}
+		}
+
+		ber_memfree( line );
+	}
+
+	return( 0 );
+}
+
+/*
+ * ldif_getline - return the next "line" (minus newline) of input from a
+ * string buffer of lines separated by newlines, terminated by \n\n
+ * or \0.  this routine handles continued lines, bundling them into
+ * a single big line before returning.  if a line begins with a white
+ * space character, it is a continuation of the previous line. the white
+ * space character (nb: only one char), and preceeding newline are changed
+ * into CONTINUED_LINE_MARKER chars, to be deleted later by the
+ * ldif_parse_line() routine above.
+ *
+ * ldif_getline will skip over any line which starts '#'.
+ *
+ * ldif_getline takes a pointer to a pointer to the buffer on the first call,
+ * which it updates and must be supplied on subsequent calls.
+ */
+
+int
+ldif_countlines( LDAP_CONST char *buf )
+{
+	char *nl;
+	int ret = 0;
+
+	if ( !buf ) return ret;
+
+	for ( nl = strchr(buf, '\n'); nl; nl = strchr(nl, '\n') ) {
+		nl++;
+		if ( *nl != ' ' ) ret++;
+	}
+	return ret;
+}
+
+char *
+ldif_getline( char **next )
+{
+	char *line;
+
+	do {
+		if ( *next == NULL || **next == '\n' || **next == '\0' ) {
+			return( NULL );
+		}
+
+		line = *next;
+
+		while ( (*next = strchr( *next, '\n' )) != NULL ) {
+#if CONTINUED_LINE_MARKER != '\r'
+			if ( (*next)[-1] == '\r' ) {
+				(*next)[-1] = CONTINUED_LINE_MARKER;
+			}
+#endif
+
+			if ( (*next)[1] != ' ' ) {
+				if ( (*next)[1] == '\r' && (*next)[2] == '\n' ) {
+					*(*next)++ = '\0';
+				}
+				*(*next)++ = '\0';
+				break;
+			}
+
+			**next = CONTINUED_LINE_MARKER;
+			(*next)[1] = CONTINUED_LINE_MARKER;
+			(*next)++;
+		}
+	} while( *line == '#' );
+
+	return( line );
+}
+
+/*
+ * name and OID of attributeTypes that must be base64 encoded in any case
+ */
+typedef struct must_b64_encode_s {
+	struct berval	name;
+	struct berval	oid;
+} must_b64_encode_s;
+
+static must_b64_encode_s	default_must_b64_encode[] = {
+	{ BER_BVC( "userPassword" ), BER_BVC( "2.5.4.35" ) },
+	{ BER_BVNULL, BER_BVNULL }
+};
+
+static must_b64_encode_s	*must_b64_encode = default_must_b64_encode;
+
+/*
+ * register name and OID of attributeTypes that must always be base64 
+ * encoded
+ *
+ * NOTE: this routine mallocs memory in a static struct which must 
+ * be explicitly freed when no longer required
+ */
+int
+ldif_must_b64_encode_register( LDAP_CONST char *name, LDAP_CONST char *oid )
+{
+	int		i;
+	ber_len_t	len;
+
+	assert( must_b64_encode != NULL );
+	assert( name != NULL );
+	assert( oid != NULL );
+
+	len = strlen( name );
+
+	for ( i = 0; !BER_BVISNULL( &must_b64_encode[i].name ); i++ ) {
+		if ( len != must_b64_encode[i].name.bv_len ) {
+			continue;
+		}
+
+		if ( strcasecmp( name, must_b64_encode[i].name.bv_val ) == 0 ) {
+			break;
+		}
+	}
+
+	if ( !BER_BVISNULL( &must_b64_encode[i].name ) ) {
+		return 1;
+	}
+
+	for ( i = 0; !BER_BVISNULL( &must_b64_encode[i].name ); i++ )
+		/* just count */ ;
+
+	if ( must_b64_encode == default_must_b64_encode ) {
+		must_b64_encode = ber_memalloc( sizeof( must_b64_encode_s ) * ( i + 2 ) );
+
+		for ( i = 0; !BER_BVISNULL( &default_must_b64_encode[i].name ); i++ ) {
+			ber_dupbv( &must_b64_encode[i].name, &default_must_b64_encode[i].name );
+			ber_dupbv( &must_b64_encode[i].oid, &default_must_b64_encode[i].oid );
+		}
+
+	} else {
+		must_b64_encode_s	*tmp;
+
+		tmp = ber_memrealloc( must_b64_encode,
+			sizeof( must_b64_encode_s ) * ( i + 2 ) );
+		if ( tmp == NULL ) {
+			return 1;
+		}
+		must_b64_encode = tmp;
+	}
+
+	ber_str2bv( name, len, 1, &must_b64_encode[i].name );
+	ber_str2bv( oid, 0, 1, &must_b64_encode[i].oid );
+
+	BER_BVZERO( &must_b64_encode[i + 1].name );
+
+	return 0;
+}
+
+void
+ldif_must_b64_encode_release( void )
+{
+	int	i;
+
+	assert( must_b64_encode != NULL );
+
+	if ( must_b64_encode == default_must_b64_encode ) {
+		return;
+	}
+
+	for ( i = 0; !BER_BVISNULL( &must_b64_encode[i].name ); i++ ) {
+		ber_memfree( must_b64_encode[i].name.bv_val );
+		ber_memfree( must_b64_encode[i].oid.bv_val );
+	}
+
+	ber_memfree( must_b64_encode );
+
+	must_b64_encode = default_must_b64_encode;
+}
+
+/*
+ * returns 1 iff the string corresponds to the name or the OID of any 
+ * of the attributeTypes listed in must_b64_encode
+ */
+static int
+ldif_must_b64_encode( LDAP_CONST char *s )
+{
+	int		i;
+	struct berval	bv;
+
+	assert( must_b64_encode != NULL );
+	assert( s != NULL );
+
+	ber_str2bv( s, 0, 0, &bv );
+
+	for ( i = 0; !BER_BVISNULL( &must_b64_encode[i].name ); i++ ) {
+		if ( ber_bvstrcasecmp( &must_b64_encode[i].name, &bv ) == 0
+			|| ber_bvcmp( &must_b64_encode[i].oid, &bv ) == 0 )
+		{
+			return 1;
+		}
+	}
+
+	return 0;
+}
+
+/* compatibility with U-Mich off by two bug */
+#define LDIF_KLUDGE 2
+
+/* NOTE: only preserved for binary compatibility */
+void
+ldif_sput(
+	char **out,
+	int type,
+	LDAP_CONST char *name,
+	LDAP_CONST char *val,
+	ber_len_t vlen )
+{
+	ldif_sput_wrap( out, type, name, val, vlen, LDIF_LINE_WIDTH+LDIF_KLUDGE );
+}
+
+void
+ldif_sput_wrap(
+	char **out,
+	int type,
+	LDAP_CONST char *name,
+	LDAP_CONST char *val,
+	ber_len_t vlen,
+        ber_len_t wrap )
+{
+	const unsigned char *byte, *stop;
+	unsigned char	buf[3];
+	unsigned long	bits;
+	char		*save;
+	int		pad;
+	int		namelen = 0;
+
+	ber_len_t savelen;
+	ber_len_t len=0;
+	ber_len_t i;
+
+	if ( !wrap )
+		wrap = LDIF_LINE_WIDTH+LDIF_KLUDGE;
+
+	/* prefix */
+	switch( type ) {
+	case LDIF_PUT_COMMENT:
+		*(*out)++ = '#';
+		len++;
+
+		if( vlen ) {
+			*(*out)++ = ' ';
+			len++;
+		}
+
+		break;
+
+	case LDIF_PUT_SEP:
+		*(*out)++ = '\n';
+		return;
+	}
+
+	/* name (attribute type) */
+	if( name != NULL ) {
+		/* put the name + ":" */
+		namelen = strlen(name);
+		strcpy(*out, name);
+		*out += namelen;
+		len += namelen;
+
+		if( type != LDIF_PUT_COMMENT ) {
+			*(*out)++ = ':';
+			len++;
+		}
+
+	}
+#ifdef LDAP_DEBUG
+	else {
+		assert( type == LDIF_PUT_COMMENT );
+	}
+#endif
+
+	if( vlen == 0 ) {
+		*(*out)++ = '\n';
+		return;
+	}
+
+	switch( type ) {
+	case LDIF_PUT_NOVALUE:
+		*(*out)++ = '\n';
+		return;
+
+	case LDIF_PUT_URL: /* url value */
+		*(*out)++ = '<';
+		len++;
+		break;
+
+	case LDIF_PUT_B64: /* base64 value */
+		*(*out)++ = ':';
+		len++;
+		break;
+	}
+
+	switch( type ) {
+	case LDIF_PUT_TEXT:
+	case LDIF_PUT_URL:
+	case LDIF_PUT_B64:
+		*(*out)++ = ' ';
+		len++;
+		/* fall-thru */
+
+	case LDIF_PUT_COMMENT:
+		/* pre-encoded names */
+		for ( i=0; i < vlen; i++ ) {
+			if ( len > wrap ) {
+				*(*out)++ = '\n';
+				*(*out)++ = ' ';
+				len = 1;
+			}
+
+			*(*out)++ = val[i];
+			len++;
+		}
+		*(*out)++ = '\n';
+		return;
+	}
+
+	save = *out;
+	savelen = len;
+
+	*(*out)++ = ' ';
+	len++;
+
+	stop = (const unsigned char *) (val + vlen);
+
+	if ( type == LDIF_PUT_VALUE
+		&& isgraph( (unsigned char) val[0] ) && val[0] != ':' && val[0] != '<'
+		&& isgraph( (unsigned char) val[vlen-1] )
+#ifndef LDAP_BINARY_DEBUG
+		&& strstr( name, ";binary" ) == NULL
+#endif
+#ifndef LDAP_PASSWD_DEBUG
+		&& !ldif_must_b64_encode( name )
+#endif
+	) {
+		int b64 = 0;
+
+		for ( byte = (const unsigned char *) val; byte < stop;
+		    byte++, len++ )
+		{
+			if ( !isascii( *byte ) || !isprint( *byte ) ) {
+				b64 = 1;
+				break;
+			}
+			if ( len >= wrap ) {
+				*(*out)++ = '\n';
+				*(*out)++ = ' ';
+				len = 1;
+			}
+			*(*out)++ = *byte;
+		}
+
+		if( !b64 ) {
+			*(*out)++ = '\n';
+			return;
+		}
+	}
+
+	*out = save;
+	*(*out)++ = ':';
+	*(*out)++ = ' ';
+	len = savelen + 2;
+
+	/* convert to base 64 (3 bytes => 4 base 64 digits) */
+	for ( byte = (const unsigned char *) val;
+		byte < stop - 2;
+	    byte += 3 )
+	{
+		bits = (byte[0] & 0xff) << 16;
+		bits |= (byte[1] & 0xff) << 8;
+		bits |= (byte[2] & 0xff);
+
+		for ( i = 0; i < 4; i++, len++, bits <<= 6 ) {
+			if ( len >= wrap ) {
+				*(*out)++ = '\n';
+				*(*out)++ = ' ';
+				len = 1;
+			}
+
+			/* get b64 digit from high order 6 bits */
+			*(*out)++ = nib2b64[ (bits & 0xfc0000L) >> 18 ];
+		}
+	}
+
+	/* add padding if necessary */
+	if ( byte < stop ) {
+		for ( i = 0; byte + i < stop; i++ ) {
+			buf[i] = byte[i];
+		}
+		for ( pad = 0; i < 3; i++, pad++ ) {
+			buf[i] = '\0';
+		}
+		byte = buf;
+		bits = (byte[0] & 0xff) << 16;
+		bits |= (byte[1] & 0xff) << 8;
+		bits |= (byte[2] & 0xff);
+
+		for ( i = 0; i < 4; i++, len++, bits <<= 6 ) {
+			if ( len >= wrap ) {
+				*(*out)++ = '\n';
+				*(*out)++ = ' ';
+				len = 1;
+			}
+
+			if( i + pad < 4 ) {
+				/* get b64 digit from low order 6 bits */
+				*(*out)++ = nib2b64[ (bits & 0xfc0000L) >> 18 ];
+			} else {
+				*(*out)++ = '=';
+			}
+		}
+	}
+	*(*out)++ = '\n';
+}
+
+
+/*
+ * ldif_type_and_value return BER malloc'd, zero-terminated LDIF line
+ */
+
+/* NOTE: only preserved for binary compatibility */
+char *
+ldif_put(
+	int type,
+	LDAP_CONST char *name,
+	LDAP_CONST char *val,
+	ber_len_t vlen )
+{
+	return ldif_put_wrap( type, name, val, vlen, LDIF_LINE_WIDTH );
+}
+
+char *
+ldif_put_wrap(
+	int type,
+	LDAP_CONST char *name,
+	LDAP_CONST char *val,
+	ber_len_t vlen,
+	ber_len_t wrap )
+{
+    char	*buf, *p;
+    ber_len_t nlen;
+
+    nlen = ( name != NULL ) ? strlen( name ) : 0;
+
+	buf = (char *) ber_memalloc( LDIF_SIZE_NEEDED_WRAP( nlen, vlen, wrap ) + 1 );
+
+    if ( buf == NULL ) {
+		ber_pvt_log_printf( LDAP_DEBUG_ANY, ldif_debug,
+			_("ldif_type_and_value: malloc failed!"));
+		return NULL;
+    }
+
+    p = buf;
+    ldif_sput_wrap( &p, type, name, val, vlen, wrap );
+    *p = '\0';
+
+    return( buf );
+}
+
+int ldif_is_not_printable(
+	LDAP_CONST char *val,
+	ber_len_t vlen )
+{
+	if( vlen == 0 || val == NULL  ) {
+		return -1;
+	}
+
+	if( isgraph( (unsigned char) val[0] ) && val[0] != ':' && val[0] != '<' &&
+		isgraph( (unsigned char) val[vlen-1] ) )
+	{
+		ber_len_t i;
+
+		for ( i = 0; val[i]; i++ ) {
+			if ( !isascii( val[i] ) || !isprint( (unsigned char) val[i] ) ) {
+				return 1;
+			}
+		}
+
+		return 0;
+	}
+
+	return 1;
+}
+
+LDIFFP *
+ldif_open(
+	LDAP_CONST char *file,
+	LDAP_CONST char *mode
+)
+{
+	FILE *fp = fopen( file, mode );
+	LDIFFP *lfp = NULL;
+
+	if ( fp ) {
+		lfp = ber_memalloc( sizeof( LDIFFP ));
+		lfp->fp = fp;
+		lfp->prev = NULL;
+	}
+	return lfp;
+}
+
+void
+ldif_close(
+	LDIFFP *lfp
+)
+{
+	LDIFFP *prev;
+
+	while ( lfp ) {
+		fclose( lfp->fp );
+		prev = lfp->prev;
+		ber_memfree( lfp );
+		lfp = prev;
+	}
+}
+
+#define	LDIF_MAXLINE	4096
+
+/*
+ * ldif_read_record - read an ldif record.  Return 1 for success, 0 for EOF,
+ * -1 for error.
+ */
+int
+ldif_read_record(
+	LDIFFP      *lfp,
+	unsigned long *lno,		/* ptr to line number counter              */
+	char        **bufp,     /* ptr to malloced output buffer           */
+	int         *buflenp )  /* ptr to length of *bufp                  */
+{
+	char        line[LDIF_MAXLINE], *nbufp;
+	ber_len_t   lcur = 0, len;
+	int         last_ch = '\n', found_entry = 0, stop, top_comment = 0;
+
+	for ( stop = 0;  !stop;  last_ch = line[len-1] ) {
+		/* If we're at the end of this file, see if we should pop
+		 * back to a previous file. (return from an include)
+		 */
+		while ( feof( lfp->fp )) {
+			if ( lfp->prev ) {
+				LDIFFP *tmp = lfp->prev;
+				fclose( lfp->fp );
+				*lfp = *tmp;
+				ber_memfree( tmp );
+			} else {
+				stop = 1;
+				break;
+			}
+		}
+		if ( !stop ) {
+			if ( fgets( line, sizeof( line ), lfp->fp ) == NULL ) {
+				stop = 1;
+				len = 0;
+			} else {
+				len = strlen( line );
+			}
+		}
+
+		if ( stop ) {
+			/* Add \n in case the file does not end with newline */
+			if (last_ch != '\n') {
+				len = 1;
+				line[0] = '\n';
+				line[1] = '\0';
+				goto last;
+			}
+			break;
+		}
+
+		/* Squash \r\n to \n */
+		if ( len > 1 && line[len-2] == '\r' ) {
+			len--;
+			line[len-1] = '\n';
+		}
+
+		if ( last_ch == '\n' ) {
+			(*lno)++;
+
+			if ( line[0] == '\n' ) {
+				if ( !found_entry ) {
+					lcur = 0;
+					top_comment = 0;
+					continue;
+				}
+				break;
+			}
+
+			if ( !found_entry ) {
+				if ( line[0] == '#' ) {
+					top_comment = 1;
+				} else if ( ! ( top_comment && line[0] == ' ' ) ) {
+					/* Found a new entry */
+					found_entry = 1;
+
+					if ( isdigit( (unsigned char) line[0] ) ) {
+						/* skip index */
+						continue;
+					}
+					if ( !strncasecmp( line, "include:",
+						STRLENOF("include:"))) {
+						FILE *fp2;
+						char *ptr;
+						found_entry = 0;
+
+						if ( line[len-1] == '\n' ) {
+							len--;
+							line[len] = '\0';
+						}
+
+						ptr = line + STRLENOF("include:");
+						while (isspace((unsigned char) *ptr)) ptr++;
+						fp2 = ldif_open_url( ptr );
+						if ( fp2 ) {
+							LDIFFP *lnew = ber_memalloc( sizeof( LDIFFP ));
+							if ( lnew == NULL ) {
+								fclose( fp2 );
+								return 0;
+							}
+							lnew->prev = lfp->prev;
+							lnew->fp = lfp->fp;
+							lfp->prev = lnew;
+							lfp->fp = fp2;
+							line[len] = '\n';
+							len++;
+							continue;
+						} else {
+							/* We failed to open the file, this should
+							 * be reported as an error somehow.
+							 */
+							ber_pvt_log_printf( LDAP_DEBUG_ANY, ldif_debug,
+								_("ldif_read_record: include %s failed\n"), ptr );
+							return -1;
+						}
+					}
+				}
+			}
+		}
+
+last:
+		if ( *buflenp - lcur <= len ) {
+			*buflenp += len + LDIF_MAXLINE;
+			nbufp = ber_memrealloc( *bufp, *buflenp );
+			if( nbufp == NULL ) {
+				return 0;
+			}
+			*bufp = nbufp;
+		}
+		strcpy( *bufp + lcur, line );
+		lcur += len;
+	}
+
+	return( found_entry );
+}