Adding upstream version 2.5.13+dfsg.upstream/2.5.13+dfsgupstream

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

1 files changed, 572 insertions, 0 deletions

diff --git a/servers/slapd/back-sql/util.c b/servers/slapd/back-sql/util.c
new file mode 100644
index 0000000..94a00ca
--- /dev/null
+++ b/servers/slapd/back-sql/util.c
@@ -0,0 +1,572 @@
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1999-2022 The OpenLDAP Foundation.
+ * Portions Copyright 1999 Dmitry Kovalev.
+ * Portions Copyright 2002 Pierangelo Masarati.
+ * 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>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This work was initially developed by Dmitry Kovalev for inclusion
+ * by OpenLDAP Software.  Additional significant contributors include
+ * Pierangelo Masarati.
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+#include <sys/types.h>
+#include "ac/string.h"
+#include "ac/ctype.h"
+#include "ac/stdarg.h"
+
+#include "slap.h"
+#include "proto-sql.h"
+#include "lutil.h"
+
+#define BACKSQL_MAX(a,b) ((a)>(b)?(a):(b))
+#define BACKSQL_MIN(a,b) ((a)<(b)?(a):(b))
+
+#define BACKSQL_STR_GROW 256
+
+const char backsql_def_oc_query[] = 
+	"SELECT id,name,keytbl,keycol,create_proc,delete_proc,expect_return "
+	"FROM ldap_oc_mappings";
+const char backsql_def_needs_select_oc_query[] = 
+	"SELECT id,name,keytbl,keycol,create_proc,create_keyval,delete_proc,"
+	"expect_return FROM ldap_oc_mappings";
+const char backsql_def_at_query[] = 
+	"SELECT name,sel_expr,from_tbls,join_where,add_proc,delete_proc,"
+	"param_order,expect_return,sel_expr_u FROM ldap_attr_mappings "
+	"WHERE oc_map_id=?";
+const char backsql_def_delentry_stmt[] = "DELETE FROM ldap_entries WHERE id=?";
+const char backsql_def_renentry_stmt[] =
+	"UPDATE ldap_entries SET dn=?,parent=?,keyval=? WHERE id=?";
+const char backsql_def_insentry_stmt[] = 
+	"INSERT INTO ldap_entries (dn,oc_map_id,parent,keyval) "
+	"VALUES (?,?,?,?)";
+const char backsql_def_delobjclasses_stmt[] = "DELETE FROM ldap_entry_objclasses "
+	"WHERE entry_id=?";
+const char backsql_def_subtree_cond[] = "ldap_entries.dn LIKE CONCAT('%',?)";
+const char backsql_def_upper_subtree_cond[] = "(ldap_entries.dn) LIKE CONCAT('%',?)";
+const char backsql_id_query[] = "SELECT id,keyval,oc_map_id,dn FROM ldap_entries WHERE ";
+/* better ?||? or cast(?||? as varchar) */ 
+const char backsql_def_concat_func[] = "CONCAT(?,?)";
+
+/* TimesTen */
+const char backsql_check_dn_ru_query[] = "SELECT dn_ru FROM ldap_entries";
+
+struct berbuf *
+backsql_strcat_x( struct berbuf *dest, void *memctx, ... )
+{
+	va_list		strs;
+	ber_len_t	cdlen, cslen, grow;
+	char		*cstr;
+
+	assert( dest != NULL );
+	assert( dest->bb_val.bv_val == NULL 
+			|| dest->bb_val.bv_len == strlen( dest->bb_val.bv_val ) );
+ 
+#ifdef BACKSQL_TRACE
+	Debug( LDAP_DEBUG_TRACE, "==>backsql_strcat()\n" );
+#endif /* BACKSQL_TRACE */
+
+	va_start( strs, memctx );
+	if ( dest->bb_val.bv_val == NULL || dest->bb_len == 0 ) {
+		dest->bb_val.bv_val = (char *)ber_memalloc_x( BACKSQL_STR_GROW * sizeof( char ), memctx );
+		dest->bb_val.bv_len = 0;
+		dest->bb_len = BACKSQL_STR_GROW;
+	}
+	cdlen = dest->bb_val.bv_len;
+	while ( ( cstr = va_arg( strs, char * ) ) != NULL ) {
+		cslen = strlen( cstr );
+		grow = BACKSQL_MAX( BACKSQL_STR_GROW, cslen );
+		if ( dest->bb_len - cdlen <= cslen ) {
+			char	*tmp_dest;
+
+#ifdef BACKSQL_TRACE
+			Debug( LDAP_DEBUG_TRACE, "backsql_strcat(): "
+				"buflen=%d, cdlen=%d, cslen=%d "
+				"-- reallocating dest\n",
+				dest->bb_len, cdlen + 1, cslen );
+#endif /* BACKSQL_TRACE */
+
+			tmp_dest = (char *)ber_memrealloc_x( dest->bb_val.bv_val,
+					dest->bb_len + grow * sizeof( char ), memctx );
+			if ( tmp_dest == NULL ) {
+				Debug( LDAP_DEBUG_ANY, "backsql_strcat(): "
+					"could not reallocate string buffer.\n" );
+				va_end( strs );
+				return NULL;
+			}
+			dest->bb_val.bv_val = tmp_dest;
+			dest->bb_len += grow;
+
+#ifdef BACKSQL_TRACE
+			Debug( LDAP_DEBUG_TRACE, "backsql_strcat(): "
+				"new buflen=%d, dest=%p\n",
+				dest->bb_len, dest );
+#endif /* BACKSQL_TRACE */
+		}
+		AC_MEMCPY( dest->bb_val.bv_val + cdlen, cstr, cslen + 1 );
+		cdlen += cslen;
+	}
+	va_end( strs );
+
+#ifdef BACKSQL_TRACE
+	Debug( LDAP_DEBUG_TRACE, "<==backsql_strcat() (dest=\"%s\")\n", 
+			dest->bb_val.bv_val );
+#endif /* BACKSQL_TRACE */
+
+	dest->bb_val.bv_len = cdlen;
+
+	return dest;
+} 
+
+struct berbuf *
+backsql_strfcat_x( struct berbuf *dest, void *memctx, const char *fmt, ... )
+{
+	va_list		strs;
+	ber_len_t	cdlen;
+
+	assert( dest != NULL );
+	assert( fmt != NULL );
+	assert( dest->bb_len == 0 || dest->bb_len > dest->bb_val.bv_len );
+	assert( dest->bb_val.bv_val == NULL 
+			|| dest->bb_val.bv_len == strlen( dest->bb_val.bv_val ) );
+ 
+#ifdef BACKSQL_TRACE
+	Debug( LDAP_DEBUG_TRACE, "==>backsql_strfcat()\n" );
+#endif /* BACKSQL_TRACE */
+
+	va_start( strs, fmt );
+	if ( dest->bb_val.bv_val == NULL || dest->bb_len == 0 ) {
+		dest->bb_val.bv_val = (char *)ber_memalloc_x( BACKSQL_STR_GROW * sizeof( char ), memctx );
+		dest->bb_val.bv_len = 0;
+		dest->bb_len = BACKSQL_STR_GROW;
+	}
+
+	cdlen = dest->bb_val.bv_len;
+	for ( ; fmt[0]; fmt++ ) {
+		ber_len_t	cslen, grow;
+		char		*cstr, cc[ 2 ] = { '\0', '\0' };
+		struct berval	*cbv;
+
+		switch ( fmt[ 0 ] ) {
+
+		/* berval */
+		case 'b':
+			cbv = va_arg( strs, struct berval * );
+			cstr = cbv->bv_val;
+			cslen = cbv->bv_len;
+			break;
+
+		/* length + string */
+		case 'l':
+			cslen = va_arg( strs, ber_len_t );
+			cstr = va_arg( strs, char * );
+			break;
+
+		/* string */
+		case 's':
+			cstr = va_arg( strs, char * );
+			cslen = strlen( cstr );
+			break;
+
+		/* char */
+		case 'c':
+			/* 
+			 * `char' is promoted to `int' when passed through `...'
+			 */
+			cc[0] = va_arg( strs, int );
+			cstr = cc;
+			cslen = 1;
+			break;
+
+		default:
+			assert( 0 );
+		}
+
+		grow = BACKSQL_MAX( BACKSQL_STR_GROW, cslen );
+		if ( dest->bb_len - cdlen <= cslen ) {
+			char	*tmp_dest;
+
+#ifdef BACKSQL_TRACE
+			Debug( LDAP_DEBUG_TRACE, "backsql_strfcat(): "
+				"buflen=%d, cdlen=%d, cslen=%d "
+				"-- reallocating dest\n",
+				dest->bb_len, cdlen + 1, cslen );
+#endif /* BACKSQL_TRACE */
+
+			tmp_dest = (char *)ber_memrealloc_x( dest->bb_val.bv_val,
+					( dest->bb_len ) + grow * sizeof( char ), memctx );
+			if ( tmp_dest == NULL ) {
+				Debug( LDAP_DEBUG_ANY, "backsql_strfcat(): "
+					"could not reallocate string buffer.\n" );
+				va_end( strs );
+				return NULL;
+			}
+			dest->bb_val.bv_val = tmp_dest;
+			dest->bb_len += grow * sizeof( char );
+
+#ifdef BACKSQL_TRACE
+			Debug( LDAP_DEBUG_TRACE, "backsql_strfcat(): "
+				"new buflen=%d, dest=%p\n", dest->bb_len, dest );
+#endif /* BACKSQL_TRACE */
+		}
+
+		assert( cstr != NULL );
+		
+		AC_MEMCPY( dest->bb_val.bv_val + cdlen, cstr, cslen + 1 );
+		cdlen += cslen;
+	}
+
+	va_end( strs );
+
+#ifdef BACKSQL_TRACE
+	Debug( LDAP_DEBUG_TRACE, "<==backsql_strfcat() (dest=\"%s\")\n", 
+			dest->bb_val.bv_val );
+#endif /* BACKSQL_TRACE */
+
+	dest->bb_val.bv_len = cdlen;
+
+	return dest;
+} 
+
+int
+backsql_entry_addattr(
+	Entry			*e,
+	AttributeDescription	*ad,
+	struct berval		*val,
+	void			*memctx )
+{
+	int			rc;
+
+#ifdef BACKSQL_TRACE
+	Debug( LDAP_DEBUG_TRACE, "backsql_entry_addattr(\"%s\"): %s=%s\n", 
+		e->e_name.bv_val, ad->ad_cname.bv_val, val->bv_val );
+#endif /* BACKSQL_TRACE */
+
+	rc = attr_merge_normalize_one( e, ad, val, memctx );
+
+	if ( rc != LDAP_SUCCESS ) {
+		Debug( LDAP_DEBUG_TRACE, "backsql_entry_addattr(\"%s\"): "
+			"failed to merge value \"%s\" for attribute \"%s\"\n",
+			e->e_name.bv_val, val->bv_val, ad->ad_cname.bv_val );
+		return rc;
+	}
+
+#ifdef BACKSQL_TRACE
+	Debug( LDAP_DEBUG_TRACE, "<==backsql_entry_addattr(\"%s\")\n",
+		e->e_name.bv_val );
+#endif /* BACKSQL_TRACE */
+
+	return LDAP_SUCCESS;
+}
+
+static char *
+backsql_get_table_spec( backsql_info *bi, char **p )
+{
+	char		*s, *q;
+	struct berbuf	res = BB_NULL;
+
+	assert( p != NULL );
+	assert( *p != NULL );
+
+	s = *p;
+	while ( **p && **p != ',' ) {
+		(*p)++;
+	}
+
+	if ( **p ) {
+		*(*p)++ = '\0';
+	}
+	
+#define BACKSQL_NEXT_WORD { \
+		while ( *s && isspace( (unsigned char)*s ) ) s++; \
+		if ( !*s ) return res.bb_val.bv_val; \
+		q = s; \
+		while ( *q && !isspace( (unsigned char)*q ) ) q++; \
+		if ( *q ) *q++='\0'; \
+	}
+
+	BACKSQL_NEXT_WORD;
+	/* table name */
+	backsql_strcat_x( &res, NULL, s, NULL );
+	s = q;
+
+	BACKSQL_NEXT_WORD;
+	if ( strcasecmp( s, "AS" ) == 0 ) {
+		s = q;
+		BACKSQL_NEXT_WORD;
+	}
+
+	/* oracle doesn't understand "AS" :( and other RDBMSes don't need it */
+	backsql_strfcat_x( &res, NULL, "lbbsb",
+			STRLENOF( " " ), " ",
+			&bi->sql_aliasing,
+			&bi->sql_aliasing_quote,
+			s,
+			&bi->sql_aliasing_quote );
+
+	return res.bb_val.bv_val;
+}
+
+int
+backsql_merge_from_clause( 
+	backsql_info	*bi,
+	struct berbuf	*dest_from,
+	struct berval	*src_from )
+{
+	char		*s, *p, *srcc, *pos, e;
+	struct berbuf	res = BB_NULL;
+
+#ifdef BACKSQL_TRACE
+	Debug( LDAP_DEBUG_TRACE, "==>backsql_merge_from_clause(): "
+		"dest_from=\"%s\",src_from=\"%s\"\n",
+ 		dest_from ? dest_from->bb_val.bv_val : "<NULL>",
+		src_from->bv_val );
+#endif /* BACKSQL_TRACE */
+
+	srcc = ch_strdup( src_from->bv_val );
+	p = srcc;
+
+	if ( dest_from != NULL ) {
+		res = *dest_from;
+	}
+	
+	while ( *p ) {
+		s = backsql_get_table_spec( bi, &p );
+
+#ifdef BACKSQL_TRACE
+		Debug( LDAP_DEBUG_TRACE, "backsql_merge_from_clause(): "
+			"p=\"%s\" s=\"%s\"\n", p, s );
+#endif /* BACKSQL_TRACE */
+
+		if ( BER_BVISNULL( &res.bb_val ) ) {
+			backsql_strcat_x( &res, NULL, s, NULL );
+
+		} else {
+			pos = strstr( res.bb_val.bv_val, s );
+			if ( pos == NULL || ( ( e = pos[ strlen( s ) ] ) != '\0' && e != ',' ) ) {
+				backsql_strfcat_x( &res, NULL, "cs", ',', s );
+			}
+		}
+		
+		if ( s ) {
+			ch_free( s );
+		}
+	}
+
+#ifdef BACKSQL_TRACE
+	Debug( LDAP_DEBUG_TRACE, "<==backsql_merge_from_clause()\n" );
+#endif /* BACKSQL_TRACE */
+
+	free( srcc );
+	*dest_from = res;
+
+	return 1;
+}
+
+/*
+ * splits a pattern in components separated by '?'
+ * (double ?? are turned into single ? and left in the string)
+ * expected contains the number of expected occurrences of '?'
+ * (a negative value means parse as many as possible)
+ */
+
+int
+backsql_split_pattern(
+	const char	*_pattern,
+	BerVarray	*split_pattern,
+	int		expected )
+{
+	char		*pattern, *start, *end;
+	struct berval	bv;
+	int		rc = 0;
+
+#define SPLIT_CHAR	'?'
+	
+	assert( _pattern != NULL );
+	assert( split_pattern != NULL );
+
+	pattern = ch_strdup( _pattern );
+
+	start = pattern;
+	end = strchr( start, SPLIT_CHAR );
+	for ( ; start; expected-- ) {
+		char		*real_end = end;
+		ber_len_t	real_len;
+		
+		if ( real_end == NULL ) {
+			real_end = start + strlen( start );
+
+		} else if ( real_end[ 1 ] == SPLIT_CHAR ) {
+			expected++;
+			AC_MEMCPY( real_end, real_end + 1, strlen( real_end ) );
+			end = strchr( real_end + 1, SPLIT_CHAR );
+			continue;
+		}
+
+		real_len = real_end - start;
+		if ( real_len == 0 ) {
+			ber_str2bv( "", 0, 1, &bv );
+		} else {
+			ber_str2bv( start, real_len, 1, &bv );
+		}
+
+		ber_bvarray_add( split_pattern, &bv );
+
+		if ( expected == 0 ) {
+			if ( end != NULL ) {
+				rc = -1;
+				goto done;
+			}
+			break;
+		}
+
+		if ( end != NULL ) {
+			start = end + 1;
+			end = strchr( start, SPLIT_CHAR );
+		}
+	}
+
+done:;
+
+     	ch_free( pattern );
+
+	return rc;
+}
+
+int
+backsql_prepare_pattern(
+	BerVarray	split_pattern,
+	BerVarray	values,
+	struct berval	*res )
+{
+	int		i;
+	struct berbuf	bb = BB_NULL;
+
+	assert( res != NULL );
+
+	for ( i = 0; values[i].bv_val; i++ ) {
+		if ( split_pattern[i].bv_val == NULL ) {
+			ch_free( bb.bb_val.bv_val );
+			return -1;
+		}
+		backsql_strfcat_x( &bb, NULL, "b", &split_pattern[ i ] );
+		backsql_strfcat_x( &bb, NULL, "b", &values[ i ] );
+	}
+
+	if ( split_pattern[ i ].bv_val == NULL ) {
+		ch_free( bb.bb_val.bv_val );
+		return -1;
+	}
+
+	backsql_strfcat_x( &bb, NULL, "b", &split_pattern[ i ] );
+
+	*res = bb.bb_val;
+
+	return 0;
+}
+
+int
+backsql_entryUUID(
+	backsql_info	*bi,
+	backsql_entryID	*id,
+	struct berval	*entryUUID,
+	void		*memctx )
+{
+	char		uuidbuf[ LDAP_LUTIL_UUIDSTR_BUFSIZE ];
+	struct berval	uuid;
+#ifdef BACKSQL_ARBITRARY_KEY
+	int		i;
+	ber_len_t	l, lmax;
+#endif /* BACKSQL_ARBITRARY_KEY */
+
+	/* entryUUID is generated as "%08x-%04x-%04x-0000-eaddrXXX"
+	 * with eid_oc_id as %08x and hi and lo eid_id as %04x-%04x */
+	assert( bi != NULL );
+	assert( id != NULL );
+	assert( entryUUID != NULL );
+
+#ifdef BACKSQL_ARBITRARY_KEY
+	snprintf( uuidbuf, sizeof( uuidbuf ),
+			"%08x-0000-0000-0000-000000000000",
+			( id->eid_oc_id & 0xFFFFFFFF ) );
+	lmax = id->eid_keyval.bv_len < 12 ? id->eid_keyval.bv_len : 12;
+	for ( l = 0, i = 9; l < lmax; l++, i += 2 ) {
+		switch ( i ) {
+		case STRLENOF( "00000000-0000" ):
+		case STRLENOF( "00000000-0000-0000" ):
+		case STRLENOF( "00000000-0000-0000-0000" ):
+			uuidbuf[ i++ ] = '-';
+		/* FALLTHRU */
+
+		default:
+			snprintf( &uuidbuf[ i ], 3, "%2x", id->eid_keyval.bv_val[ l ] );
+			break;
+		}
+	}
+#else /* ! BACKSQL_ARBITRARY_KEY */
+	/* note: works only with 32 bit architectures... */
+	snprintf( uuidbuf, sizeof( uuidbuf ),
+			"%08x-%04x-%04x-0000-000000000000",
+			( (unsigned)id->eid_oc_id & 0xFFFFFFFF ),
+			( ( (unsigned)id->eid_keyval & 0xFFFF0000 ) >> 020 /* 16 */ ),
+			( (unsigned)id->eid_keyval & 0xFFFF ) );
+#endif /* ! BACKSQL_ARBITRARY_KEY */
+
+	uuid.bv_val = uuidbuf;
+	uuid.bv_len = strlen( uuidbuf );
+
+	ber_dupbv_x( entryUUID, &uuid, memctx );
+
+	return 0;
+}
+
+int
+backsql_entryUUID_decode(
+	struct berval	*entryUUID,
+	unsigned long	*oc_id,
+#ifdef BACKSQL_ARBITRARY_KEY
+	struct berval	*keyval
+#else /* ! BACKSQL_ARBITRARY_KEY */
+	unsigned long	*keyval
+#endif /* ! BACKSQL_ARBITRARY_KEY */
+	)
+{
+#if 0
+	fprintf( stderr, "==> backsql_entryUUID_decode()\n" );
+#endif
+
+	*oc_id = ( entryUUID->bv_val[0] << 030 /* 24 */ )
+		+ ( entryUUID->bv_val[1] << 020 /* 16 */ )
+		+ ( entryUUID->bv_val[2] << 010 /* 8 */ )
+		+ entryUUID->bv_val[3];
+
+#ifdef BACKSQL_ARBITRARY_KEY
+	/* FIXME */
+#else /* ! BACKSQL_ARBITRARY_KEY */
+	*keyval = ( entryUUID->bv_val[4] << 030 /* 24 */ )
+		+ ( entryUUID->bv_val[5] << 020 /* 16 */ )
+		+ ( entryUUID->bv_val[6] << 010 /* 8 */ )
+		+ entryUUID->bv_val[7];
+#endif /* ! BACKSQL_ARBITRARY_KEY */
+
+#if 0
+	fprintf( stderr, "<== backsql_entryUUID_decode(): oc=%lu id=%lu\n",
+			*oc_id, *keyval );
+#endif
+
+	return LDAP_SUCCESS;
+}
+