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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-15 17:54:12 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-15 17:54:12 +0000
commitb527294153be3b79563c82c66102adc0004736c0 (patch)
tree9b423a224848441885190b5ea7cf0feb23510c9d /servers/slapd/entry.c
parentInitial commit. (diff)
downloadopenldap-b527294153be3b79563c82c66102adc0004736c0.tar.xz
openldap-b527294153be3b79563c82c66102adc0004736c0.zip
Adding upstream version 2.6.7+dfsg.upstream/2.6.7+dfsg
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'servers/slapd/entry.c')
-rw-r--r--servers/slapd/entry.c1025
1 files changed, 1025 insertions, 0 deletions
diff --git a/servers/slapd/entry.c b/servers/slapd/entry.c
new file mode 100644
index 0000000..8e1463c
--- /dev/null
+++ b/servers/slapd/entry.c
@@ -0,0 +1,1025 @@
+/* entry.c - routines for dealing with entries */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2022 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) 1995 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.
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+
+#include <ac/ctype.h>
+#include <ac/errno.h>
+#include <ac/socket.h>
+#include <ac/string.h>
+
+#include "slap.h"
+#include "ldif.h"
+
+static char *ebuf; /* buf returned by entry2str */
+static char *ecur; /* pointer to end of currently used ebuf */
+static int emaxsize;/* max size of ebuf */
+
+/*
+ * Empty root entry
+ */
+const Entry slap_entry_root = {
+ NOID, { 0, "" }, { 0, "" }, NULL, 0, { 0, "" }, NULL
+};
+
+/*
+ * these mutexes must be used when calling the entry2str()
+ * routine since it returns a pointer to static data.
+ */
+ldap_pvt_thread_mutex_t entry2str_mutex;
+
+static const struct berval dn_bv = BER_BVC("dn");
+
+/*
+ * Entry free list
+ *
+ * Allocate in chunks, minimum of 1000 at a time.
+ */
+#define CHUNK_SIZE 1000
+typedef struct slap_list {
+ struct slap_list *next;
+} slap_list;
+static slap_list *entry_chunks;
+static Entry *entry_list;
+static ldap_pvt_thread_mutex_t entry_mutex;
+
+int entry_destroy(void)
+{
+ slap_list *e;
+ if ( ebuf ) free( ebuf );
+ ebuf = NULL;
+ ecur = NULL;
+ emaxsize = 0;
+
+ for ( e=entry_chunks; e; e=entry_chunks ) {
+ entry_chunks = e->next;
+ free( e );
+ }
+
+ ldap_pvt_thread_mutex_destroy( &entry_mutex );
+ ldap_pvt_thread_mutex_destroy( &entry2str_mutex );
+ return attr_destroy();
+}
+
+int
+entry_init(void)
+{
+ ldap_pvt_thread_mutex_init( &entry2str_mutex );
+ ldap_pvt_thread_mutex_init( &entry_mutex );
+ return attr_init();
+}
+
+Entry *
+str2entry( char *s )
+{
+ return str2entry2( s, 1 );
+}
+
+#define bvcasematch(bv1, bv2) (ber_bvstrcasecmp(bv1, bv2) == 0)
+
+Entry *
+str2entry2( char *s, int checkvals )
+{
+ int rc;
+ Entry *e;
+ struct berval *type, *vals, *nvals;
+ char *freeval;
+ AttributeDescription *ad, *ad_prev;
+ const char *text;
+ char *next;
+ int attr_cnt;
+ int i, lines;
+ Attribute ahead, *atail;
+
+ /*
+ * LDIF is used as the string format.
+ * An entry looks like this:
+ *
+ * dn: <dn>\n
+ * [<attr>:[:] <value>\n]
+ * [<tab><continuedvalue>\n]*
+ * ...
+ *
+ * If a double colon is used after a type, it means the
+ * following value is encoded as a base 64 string. This
+ * happens if the value contains a non-printing character
+ * or newline.
+ */
+
+ Debug( LDAP_DEBUG_TRACE, "=> str2entry: \"%s\"\n",
+ s ? s : "NULL" );
+
+ e = entry_alloc();
+
+ if( e == NULL ) {
+ Debug( LDAP_DEBUG_ANY,
+ "<= str2entry NULL (entry allocation failed)\n" );
+ return( NULL );
+ }
+
+ /* initialize entry */
+ e->e_id = NOID;
+
+ /* dn + attributes */
+ atail = &ahead;
+ ahead.a_next = NULL;
+ ad = NULL;
+ ad_prev = NULL;
+ attr_cnt = 0;
+ next = s;
+
+ lines = ldif_countlines( s );
+ type = ch_calloc( 1, (lines+1)*3*sizeof(struct berval)+lines );
+ vals = type+lines+1;
+ nvals = vals+lines+1;
+ freeval = (char *)(nvals+lines+1);
+ i = -1;
+
+ /* parse into individual values, record DN */
+ while ( (s = ldif_getline( &next )) != NULL ) {
+ int freev;
+ if ( *s == '\n' || *s == '\0' ) {
+ break;
+ }
+ i++;
+ if (i >= lines) {
+ Debug( LDAP_DEBUG_TRACE,
+ "<= str2entry ran past end of entry\n" );
+ goto fail;
+ }
+
+ rc = ldif_parse_line2( s, type+i, vals+i, &freev );
+ freeval[i] = freev;
+ if ( rc ) {
+ Debug( LDAP_DEBUG_TRACE,
+ "<= str2entry NULL (parse_line)\n" );
+ continue;
+ }
+
+ if ( bvcasematch( &type[i], &dn_bv ) ) {
+ if ( e->e_dn != NULL ) {
+ Debug( LDAP_DEBUG_ANY, "str2entry: "
+ "entry %ld has multiple DNs \"%s\" and \"%s\"\n",
+ (long) e->e_id, e->e_dn, vals[i].bv_val );
+ goto fail;
+ }
+
+ rc = dnPrettyNormal( NULL, &vals[i], &e->e_name, &e->e_nname, NULL );
+ if( rc != LDAP_SUCCESS ) {
+ Debug( LDAP_DEBUG_ANY, "str2entry: "
+ "entry %ld has invalid DN \"%s\"\n",
+ (long) e->e_id, vals[i].bv_val );
+ goto fail;
+ }
+ if ( freeval[i] ) free( vals[i].bv_val );
+ vals[i].bv_val = NULL;
+ i--;
+ continue;
+ }
+ }
+ lines = i+1;
+
+ /* check to make sure there was a dn: line */
+ if ( BER_BVISNULL( &e->e_name )) {
+ Debug( LDAP_DEBUG_ANY, "str2entry: entry %ld has no dn\n",
+ (long) e->e_id );
+ goto fail;
+ }
+
+ /* Make sure all attributes with multiple values are contiguous */
+ if ( checkvals ) {
+ int j, k;
+ struct berval bv;
+ int fv;
+
+ for (i=0; i<lines; i++) {
+ for ( j=i+1; j<lines; j++ ) {
+ if ( bvcasematch( type+i, type+j )) {
+ /* out of order, move intervening attributes down */
+ if ( j != i+1 ) {
+ bv = vals[j];
+ fv = freeval[j];
+ for ( k=j; k>i; k-- ) {
+ type[k] = type[k-1];
+ vals[k] = vals[k-1];
+ freeval[k] = freeval[k-1];
+ }
+ k++;
+ type[k] = type[i];
+ vals[k] = bv;
+ freeval[k] = fv;
+ }
+ i++;
+ }
+ }
+ }
+ }
+
+ if ( lines > 0 ) {
+ for ( i=0; i<=lines; i++ ) {
+ ad_prev = ad;
+ if ( !ad || ( i<lines && !bvcasematch( type+i, &ad->ad_cname ))) {
+ ad = NULL;
+ rc = slap_bv2ad( type+i, &ad, &text );
+
+ if( rc != LDAP_SUCCESS ) {
+ int wtool = ( slapMode & (SLAP_TOOL_MODE|SLAP_TOOL_READONLY|SLAP_TOOL_NO_SCHEMA_CHECK) ) == SLAP_TOOL_MODE;
+ Debug( wtool ? LDAP_DEBUG_ANY : LDAP_DEBUG_TRACE,
+ "<= str2entry: str2ad(%s): %s\n", type[i].bv_val, text );
+ if( wtool ) {
+ goto fail;
+ }
+
+ rc = slap_bv2undef_ad( type+i, &ad, &text, 0 );
+ if( rc != LDAP_SUCCESS ) {
+ Debug( LDAP_DEBUG_ANY,
+ "<= str2entry: slap_str2undef_ad(%s): %s\n",
+ type[i].bv_val, text );
+ goto fail;
+ }
+ }
+
+ /* require ';binary' when appropriate (ITS#5071) */
+ if ( slap_syntax_is_binary( ad->ad_type->sat_syntax ) && !slap_ad_is_binary( ad ) ) {
+ Debug( LDAP_DEBUG_ANY,
+ "str2entry: attributeType %s #%d: "
+ "needs ';binary' transfer as per syntax %s\n",
+ ad->ad_cname.bv_val, 0,
+ ad->ad_type->sat_syntax->ssyn_oid );
+ goto fail;
+ }
+ }
+
+ if (( ad_prev && ad != ad_prev ) || ( i == lines )) {
+ int j, k;
+ atail->a_next = attr_alloc( NULL );
+ atail = atail->a_next;
+ atail->a_flags = 0;
+ atail->a_numvals = attr_cnt;
+ atail->a_desc = ad_prev;
+ atail->a_vals = ch_malloc( (attr_cnt + 1) * sizeof(struct berval));
+ if( ad_prev->ad_type->sat_equality &&
+ ad_prev->ad_type->sat_equality->smr_normalize )
+ atail->a_nvals = ch_malloc( (attr_cnt + 1) * sizeof(struct berval));
+ else
+ atail->a_nvals = NULL;
+ k = i - attr_cnt;
+ for ( j=0; j<attr_cnt; j++ ) {
+ if ( freeval[k] )
+ atail->a_vals[j] = vals[k];
+ else
+ ber_dupbv( atail->a_vals+j, &vals[k] );
+ vals[k].bv_val = NULL;
+ if ( atail->a_nvals ) {
+ atail->a_nvals[j] = nvals[k];
+ nvals[k].bv_val = NULL;
+ }
+ k++;
+ }
+ BER_BVZERO( &atail->a_vals[j] );
+ if ( atail->a_nvals ) {
+ BER_BVZERO( &atail->a_nvals[j] );
+ } else {
+ atail->a_nvals = atail->a_vals;
+ }
+ attr_cnt = 0;
+ /* FIXME: we only need this when migrating from an unsorted DB */
+ if ( atail->a_desc->ad_type->sat_flags & SLAP_AT_SORTED_VAL ) {
+ rc = slap_sort_vals( (Modifications *)atail, &text, &j, NULL );
+ if ( rc == LDAP_SUCCESS ) {
+ atail->a_flags |= SLAP_ATTR_SORTED_VALS;
+ } else if ( rc == LDAP_TYPE_OR_VALUE_EXISTS ) {
+ Debug( LDAP_DEBUG_ANY,
+ "str2entry: attributeType %s value #%d provided more than once\n",
+ atail->a_desc->ad_cname.bv_val, j );
+ goto fail;
+ }
+ }
+ if ( i == lines ) break;
+ }
+
+ if ( BER_BVISNULL( &vals[i] ) ) {
+ Debug( LDAP_DEBUG_ANY,
+ "str2entry: attributeType %s #%d: "
+ "no value\n",
+ ad->ad_cname.bv_val, attr_cnt );
+ goto fail;
+ }
+
+ if ( ad->ad_type->sat_equality &&
+ ad->ad_type->sat_equality->smr_normalize )
+ {
+ rc = ordered_value_normalize(
+ SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
+ ad,
+ ad->ad_type->sat_equality,
+ &vals[i], &nvals[i], NULL );
+
+ if ( rc ) {
+ Debug( LDAP_DEBUG_ANY,
+ "<= str2entry NULL (smr_normalize %s %d)\n", ad->ad_cname.bv_val, rc );
+ goto fail;
+ }
+ }
+
+ attr_cnt++;
+ }
+ }
+
+ free( type );
+ atail->a_next = NULL;
+ e->e_attrs = ahead.a_next;
+
+ Debug(LDAP_DEBUG_TRACE, "<= str2entry(%s) -> 0x%lx\n",
+ e->e_dn, (unsigned long) e );
+ return( e );
+
+fail:
+ for ( i=0; i<lines; i++ ) {
+ if ( freeval[i] ) free( vals[i].bv_val );
+ free( nvals[i].bv_val );
+ }
+ free( type );
+ entry_free( e );
+ return NULL;
+}
+
+
+#define GRABSIZE BUFSIZ
+
+#define MAKE_SPACE( n ) { \
+ while ( ecur + (n) > ebuf + emaxsize ) { \
+ ptrdiff_t offset; \
+ offset = (int) (ecur - ebuf); \
+ ebuf = ch_realloc( ebuf, \
+ emaxsize + GRABSIZE ); \
+ emaxsize += GRABSIZE; \
+ ecur = ebuf + offset; \
+ } \
+ }
+
+/* NOTE: only preserved for binary compatibility */
+char *
+entry2str(
+ Entry *e,
+ int *len )
+{
+ return entry2str_wrap( e, len, LDIF_LINE_WIDTH );
+}
+
+char *
+entry2str_wrap(
+ Entry *e,
+ int *len,
+ ber_len_t wrap )
+{
+ Attribute *a;
+ struct berval *bv;
+ int i;
+ ber_len_t tmplen;
+
+ assert( e != NULL );
+
+ /*
+ * In string format, an entry looks like this:
+ * dn: <dn>\n
+ * [<attr>: <value>\n]*
+ */
+
+ ecur = ebuf;
+
+ /* put the dn */
+ if ( e->e_dn != NULL ) {
+ /* put "dn: <dn>" */
+ tmplen = e->e_name.bv_len;
+ MAKE_SPACE( LDIF_SIZE_NEEDED( 2, tmplen ));
+ ldif_sput_wrap( &ecur, LDIF_PUT_VALUE, "dn", e->e_dn, tmplen, wrap );
+ }
+
+ /* put the attributes */
+ for ( a = e->e_attrs; a != NULL; a = a->a_next ) {
+ /* put "<type>:[:] <value>" line for each value */
+ for ( i = 0; a->a_vals[i].bv_val != NULL; i++ ) {
+ bv = &a->a_vals[i];
+ tmplen = a->a_desc->ad_cname.bv_len;
+ MAKE_SPACE( LDIF_SIZE_NEEDED( tmplen, bv->bv_len ));
+ ldif_sput_wrap( &ecur, LDIF_PUT_VALUE,
+ a->a_desc->ad_cname.bv_val,
+ bv->bv_val, bv->bv_len, wrap );
+ }
+ }
+ MAKE_SPACE( 1 );
+ *ecur = '\0';
+ *len = ecur - ebuf;
+
+ return( ebuf );
+}
+
+void
+entry_clean( Entry *e )
+{
+ /* free an entry structure */
+ assert( e != NULL );
+
+ /* e_private must be freed by the caller */
+ assert( e->e_private == NULL );
+
+ e->e_id = 0;
+
+ /* free DNs */
+ if ( !BER_BVISNULL( &e->e_name ) ) {
+ free( e->e_name.bv_val );
+ BER_BVZERO( &e->e_name );
+ }
+ if ( !BER_BVISNULL( &e->e_nname ) ) {
+ free( e->e_nname.bv_val );
+ BER_BVZERO( &e->e_nname );
+ }
+
+ if ( !BER_BVISNULL( &e->e_bv ) ) {
+ free( e->e_bv.bv_val );
+ BER_BVZERO( &e->e_bv );
+ }
+
+ /* free attributes */
+ if ( e->e_attrs ) {
+ attrs_free( e->e_attrs );
+ e->e_attrs = NULL;
+ }
+
+ e->e_ocflags = 0;
+}
+
+void
+entry_free( Entry *e )
+{
+ entry_clean( e );
+
+ ldap_pvt_thread_mutex_lock( &entry_mutex );
+ e->e_private = entry_list;
+ entry_list = e;
+ ldap_pvt_thread_mutex_unlock( &entry_mutex );
+}
+
+/* These parameters work well on AMD64 */
+#if 0
+#define STRIDE 8
+#define STRIPE 5
+#else
+#define STRIDE 1
+#define STRIPE 1
+#endif
+#define STRIDE_FACTOR (STRIDE*STRIPE)
+
+int
+entry_prealloc( int num )
+{
+ Entry *e, **prev, *tmp;
+ slap_list *s;
+ int i, j;
+
+ if (!num) return 0;
+
+#if STRIDE_FACTOR > 1
+ /* Round up to our stride factor */
+ num += STRIDE_FACTOR-1;
+ num /= STRIDE_FACTOR;
+ num *= STRIDE_FACTOR;
+#endif
+
+ s = ch_calloc( 1, sizeof(slap_list) + num * sizeof(Entry));
+ s->next = entry_chunks;
+ entry_chunks = s;
+
+ prev = &tmp;
+ for (i=0; i<STRIPE; i++) {
+ e = (Entry *)(s+1);
+ e += i;
+ for (j=i; j<num; j+= STRIDE) {
+ *prev = e;
+ prev = (Entry **)&e->e_private;
+ e += STRIDE;
+ }
+ }
+ *prev = entry_list;
+ entry_list = (Entry *)(s+1);
+
+ return 0;
+}
+
+Entry *
+entry_alloc( void )
+{
+ Entry *e;
+
+ ldap_pvt_thread_mutex_lock( &entry_mutex );
+ if ( !entry_list )
+ entry_prealloc( CHUNK_SIZE );
+ e = entry_list;
+ entry_list = e->e_private;
+ e->e_private = NULL;
+ ldap_pvt_thread_mutex_unlock( &entry_mutex );
+
+ return e;
+}
+
+
+/*
+ * These routines are used only by Backend.
+ *
+ * the Entry has three entry points (ways to find things):
+ *
+ * by entry e.g., if you already have an entry from the cache
+ * and want to delete it. (really by entry ptr)
+ * by dn e.g., when looking for the base object of a search
+ * by id e.g., for search candidates
+ *
+ * these correspond to three different avl trees that are maintained.
+ */
+
+int
+entry_cmp( Entry *e1, Entry *e2 )
+{
+ return SLAP_PTRCMP( e1, e2 );
+}
+
+int
+entry_dn_cmp( const void *v_e1, const void *v_e2 )
+{
+ /* compare their normalized UPPERCASED dn's */
+ const Entry *e1 = v_e1, *e2 = v_e2;
+
+ return ber_bvcmp( &e1->e_nname, &e2->e_nname );
+}
+
+int
+entry_id_cmp( const void *v_e1, const void *v_e2 )
+{
+ const Entry *e1 = v_e1, *e2 = v_e2;
+ return( e1->e_id < e2->e_id ? -1 : (e1->e_id > e2->e_id ? 1 : 0) );
+}
+
+/* This is like a ber_len */
+#define entry_lenlen(l) (((l) < 0x80) ? 1 : ((l) < 0x100) ? 2 : \
+ ((l) < 0x10000) ? 3 : ((l) < 0x1000000) ? 4 : 5)
+
+static void
+entry_putlen(unsigned char **buf, ber_len_t len)
+{
+ ber_len_t lenlen = entry_lenlen(len);
+
+ if (lenlen == 1) {
+ **buf = (unsigned char) len;
+ } else {
+ int i;
+ **buf = 0x80 | ((unsigned char) lenlen - 1);
+ for (i=lenlen-1; i>0; i--) {
+ (*buf)[i] = (unsigned char) len;
+ len >>= 8;
+ }
+ }
+ *buf += lenlen;
+}
+
+static ber_len_t
+entry_getlen(unsigned char **buf)
+{
+ ber_len_t len;
+ int i;
+
+ len = *(*buf)++;
+ if (len <= 0x7f)
+ return len;
+ i = len & 0x7f;
+ len = 0;
+ for (;i > 0; i--) {
+ len <<= 8;
+ len |= *(*buf)++;
+ }
+ return len;
+}
+
+/* Count up the sizes of the components of an entry */
+void entry_partsize(Entry *e, ber_len_t *plen,
+ int *pnattrs, int *pnvals, int norm)
+{
+ ber_len_t len, dnlen, ndnlen;
+ int i, nat = 0, nval = 0;
+ Attribute *a;
+
+ dnlen = e->e_name.bv_len;
+ len = dnlen + 1; /* trailing NUL byte */
+ len += entry_lenlen(dnlen);
+ if (norm) {
+ ndnlen = e->e_nname.bv_len;
+ len += ndnlen + 1;
+ len += entry_lenlen(ndnlen);
+ }
+ for (a=e->e_attrs; a; a=a->a_next) {
+ /* For AttributeDesc, we only store the attr name */
+ nat++;
+ len += a->a_desc->ad_cname.bv_len+1;
+ len += entry_lenlen(a->a_desc->ad_cname.bv_len);
+ for (i=0; a->a_vals[i].bv_val; i++) {
+ nval++;
+ len += a->a_vals[i].bv_len + 1;
+ len += entry_lenlen(a->a_vals[i].bv_len);
+ }
+ len += entry_lenlen(i);
+ nval++; /* empty berval at end */
+ if (norm && a->a_nvals != a->a_vals) {
+ for (i=0; a->a_nvals[i].bv_val; i++) {
+ nval++;
+ len += a->a_nvals[i].bv_len + 1;
+ len += entry_lenlen(a->a_nvals[i].bv_len);
+ }
+ len += entry_lenlen(i); /* i nvals */
+ nval++;
+ } else {
+ len += entry_lenlen(0); /* 0 nvals */
+ }
+ }
+ len += entry_lenlen(nat);
+ len += entry_lenlen(nval);
+ *plen = len;
+ *pnattrs = nat;
+ *pnvals = nval;
+}
+
+/* Add up the size of the entry for a flattened buffer */
+ber_len_t entry_flatsize(Entry *e, int norm)
+{
+ ber_len_t len;
+ int nattrs, nvals;
+
+ entry_partsize(e, &len, &nattrs, &nvals, norm);
+ len += sizeof(Entry) + (nattrs * sizeof(Attribute)) +
+ (nvals * sizeof(struct berval));
+ return len;
+}
+
+/* Flatten an Entry into a buffer. The buffer is filled with just the
+ * strings/bervals of all the entry components. Each field is preceded
+ * by its length, encoded the way ber_put_len works. Every field is NUL
+ * terminated. The entire buffer size is precomputed so that a single
+ * malloc can be performed. The entry size is also recorded,
+ * to aid in entry_decode.
+ */
+int entry_encode(Entry *e, struct berval *bv)
+{
+ ber_len_t len, dnlen, ndnlen, i;
+ int nattrs, nvals;
+ Attribute *a;
+ unsigned char *ptr;
+
+ Debug( LDAP_DEBUG_TRACE, "=> entry_encode(0x%08lx): %s\n",
+ (long) e->e_id, e->e_dn );
+
+ dnlen = e->e_name.bv_len;
+ ndnlen = e->e_nname.bv_len;
+
+ entry_partsize( e, &len, &nattrs, &nvals, 1 );
+
+ bv->bv_len = len;
+ bv->bv_val = ch_malloc(len);
+ ptr = (unsigned char *)bv->bv_val;
+ entry_putlen(&ptr, nattrs);
+ entry_putlen(&ptr, nvals);
+ entry_putlen(&ptr, dnlen);
+ AC_MEMCPY(ptr, e->e_dn, dnlen);
+ ptr += dnlen;
+ *ptr++ = '\0';
+ entry_putlen(&ptr, ndnlen);
+ AC_MEMCPY(ptr, e->e_ndn, ndnlen);
+ ptr += ndnlen;
+ *ptr++ = '\0';
+
+ for (a=e->e_attrs; a; a=a->a_next) {
+ entry_putlen(&ptr, a->a_desc->ad_cname.bv_len);
+ AC_MEMCPY(ptr, a->a_desc->ad_cname.bv_val,
+ a->a_desc->ad_cname.bv_len);
+ ptr += a->a_desc->ad_cname.bv_len;
+ *ptr++ = '\0';
+ if (a->a_vals) {
+ for (i=0; a->a_vals[i].bv_val; i++);
+ assert( i == a->a_numvals );
+ entry_putlen(&ptr, i);
+ for (i=0; a->a_vals[i].bv_val; i++) {
+ entry_putlen(&ptr, a->a_vals[i].bv_len);
+ AC_MEMCPY(ptr, a->a_vals[i].bv_val,
+ a->a_vals[i].bv_len);
+ ptr += a->a_vals[i].bv_len;
+ *ptr++ = '\0';
+ }
+ if (a->a_nvals != a->a_vals) {
+ entry_putlen(&ptr, i);
+ for (i=0; a->a_nvals[i].bv_val; i++) {
+ entry_putlen(&ptr, a->a_nvals[i].bv_len);
+ AC_MEMCPY(ptr, a->a_nvals[i].bv_val,
+ a->a_nvals[i].bv_len);
+ ptr += a->a_nvals[i].bv_len;
+ *ptr++ = '\0';
+ }
+ } else {
+ entry_putlen(&ptr, 0);
+ }
+ }
+ }
+
+ Debug( LDAP_DEBUG_TRACE, "<= entry_encode(0x%08lx): %s\n",
+ (long) e->e_id, e->e_dn );
+
+ return 0;
+}
+
+/* Retrieve an Entry that was stored using entry_encode above.
+ * First entry_header must be called to decode the size of the entry.
+ * Then a single block of memory must be malloc'd to accommodate the
+ * bervals and the bulk data. Next the bulk data is retrieved from
+ * the DB and parsed by entry_decode.
+ *
+ * Note: everything is stored in a single contiguous block, so
+ * you can not free individual attributes or names from this
+ * structure. Attempting to do so will likely corrupt memory.
+ */
+int entry_header(EntryHeader *eh)
+{
+ unsigned char *ptr = (unsigned char *)eh->bv.bv_val;
+
+ /* Some overlays can create empty entries
+ * so don't check for zeros here.
+ */
+ eh->nattrs = entry_getlen(&ptr);
+ eh->nvals = entry_getlen(&ptr);
+ eh->data = (char *)ptr;
+ return LDAP_SUCCESS;
+}
+
+int
+entry_decode_dn( EntryHeader *eh, struct berval *dn, struct berval *ndn )
+{
+ int i;
+ unsigned char *ptr = (unsigned char *)eh->bv.bv_val;
+
+ assert( dn != NULL || ndn != NULL );
+
+ ptr = (unsigned char *)eh->data;
+ i = entry_getlen(&ptr);
+ if ( dn != NULL ) {
+ dn->bv_val = (char *) ptr;
+ dn->bv_len = i;
+ }
+
+ if ( ndn != NULL ) {
+ ptr += i + 1;
+ i = entry_getlen(&ptr);
+ ndn->bv_val = (char *) ptr;
+ ndn->bv_len = i;
+ }
+
+ Debug( LDAP_DEBUG_TRACE,
+ "entry_decode_dn: \"%s\"\n",
+ dn ? dn->bv_val : ndn->bv_val );
+
+ return 0;
+}
+
+#ifdef SLAP_ZONE_ALLOC
+int entry_decode(EntryHeader *eh, Entry **e, void *ctx)
+#else
+int entry_decode(EntryHeader *eh, Entry **e)
+#endif
+{
+ int i, j, nattrs, nvals;
+ int rc;
+ Attribute *a;
+ Entry *x;
+ const char *text;
+ AttributeDescription *ad;
+ unsigned char *ptr = (unsigned char *)eh->bv.bv_val;
+ BerVarray bptr;
+
+ nattrs = eh->nattrs;
+ nvals = eh->nvals;
+ x = entry_alloc();
+ x->e_attrs = attrs_alloc( nattrs );
+ ptr = (unsigned char *)eh->data;
+ i = entry_getlen(&ptr);
+ x->e_name.bv_val = (char *) ptr;
+ x->e_name.bv_len = i;
+ ptr += i+1;
+ i = entry_getlen(&ptr);
+ x->e_nname.bv_val = (char *) ptr;
+ x->e_nname.bv_len = i;
+ ptr += i+1;
+ Debug( LDAP_DEBUG_TRACE,
+ "entry_decode: \"%s\"\n",
+ x->e_dn );
+ x->e_bv = eh->bv;
+
+ a = x->e_attrs;
+ bptr = (BerVarray)eh->bv.bv_val;
+
+ while (((char *)ptr - eh->bv.bv_val < eh->bv.bv_len) &&
+ (i = entry_getlen(&ptr))) {
+ struct berval bv;
+ bv.bv_len = i;
+ bv.bv_val = (char *) ptr;
+ ad = NULL;
+ rc = slap_bv2ad( &bv, &ad, &text );
+
+ if( rc != LDAP_SUCCESS ) {
+ Debug( LDAP_DEBUG_TRACE,
+ "<= entry_decode: str2ad(%s): %s\n", ptr, text );
+ rc = slap_bv2undef_ad( &bv, &ad, &text, 0 );
+
+ if( rc != LDAP_SUCCESS ) {
+ Debug( LDAP_DEBUG_ANY,
+ "<= entry_decode: slap_str2undef_ad(%s): %s\n",
+ ptr, text );
+ return rc;
+ }
+ }
+ ptr += i + 1;
+ a->a_desc = ad;
+ a->a_flags = SLAP_ATTR_DONT_FREE_DATA | SLAP_ATTR_DONT_FREE_VALS;
+ j = entry_getlen(&ptr);
+ a->a_numvals = j;
+ a->a_vals = bptr;
+
+ while (j) {
+ i = entry_getlen(&ptr);
+ bptr->bv_len = i;
+ bptr->bv_val = (char *)ptr;
+ ptr += i+1;
+ bptr++;
+ j--;
+ }
+ bptr->bv_val = NULL;
+ bptr->bv_len = 0;
+ bptr++;
+
+ j = entry_getlen(&ptr);
+ if (j) {
+ a->a_nvals = bptr;
+ while (j) {
+ i = entry_getlen(&ptr);
+ bptr->bv_len = i;
+ bptr->bv_val = (char *)ptr;
+ ptr += i+1;
+ bptr++;
+ j--;
+ }
+ bptr->bv_val = NULL;
+ bptr->bv_len = 0;
+ bptr++;
+ } else {
+ a->a_nvals = a->a_vals;
+ }
+ /* FIXME: This is redundant once a sorted entry is saved into the DB */
+ if ( a->a_desc->ad_type->sat_flags & SLAP_AT_SORTED_VAL ) {
+ rc = slap_sort_vals( (Modifications *)a, &text, &j, NULL );
+ if ( rc == LDAP_SUCCESS ) {
+ a->a_flags |= SLAP_ATTR_SORTED_VALS;
+ } else if ( rc == LDAP_TYPE_OR_VALUE_EXISTS ) {
+ /* should never happen */
+ Debug( LDAP_DEBUG_ANY,
+ "entry_decode: attributeType %s value #%d provided more than once\n",
+ a->a_desc->ad_cname.bv_val, j );
+ return rc;
+ }
+ }
+ a = a->a_next;
+ nattrs--;
+ if ( !nattrs )
+ break;
+ }
+
+ Debug(LDAP_DEBUG_TRACE, "<= entry_decode(%s)\n",
+ x->e_dn );
+ *e = x;
+ return 0;
+}
+
+Entry *
+entry_dup2( Entry *dest, Entry *source )
+{
+ assert( dest != NULL );
+ assert( source != NULL );
+
+ assert( dest->e_private == NULL );
+
+ dest->e_id = source->e_id;
+ ber_dupbv( &dest->e_name, &source->e_name );
+ ber_dupbv( &dest->e_nname, &source->e_nname );
+ dest->e_attrs = attrs_dup( source->e_attrs );
+ dest->e_ocflags = source->e_ocflags;
+
+ return dest;
+}
+
+Entry *
+entry_dup( Entry *e )
+{
+ return entry_dup2( entry_alloc(), e );
+}
+
+#if 1
+/* Duplicates an entry using a single malloc. Saves CPU time, increases
+ * heap usage because a single large malloc is harder to satisfy than
+ * lots of small ones, and the freed space isn't as easily reusable.
+ *
+ * Probably not worth using this function.
+ */
+Entry *entry_dup_bv( Entry *e )
+{
+ ber_len_t len;
+ int nattrs, nvals;
+ Entry *ret;
+ struct berval *bvl;
+ char *ptr;
+ Attribute *src, *dst;
+
+ ret = entry_alloc();
+
+ entry_partsize(e, &len, &nattrs, &nvals, 1);
+ ret->e_id = e->e_id;
+ ret->e_attrs = attrs_alloc( nattrs );
+ ret->e_ocflags = e->e_ocflags;
+ ret->e_bv.bv_len = len + nvals * sizeof(struct berval);
+ ret->e_bv.bv_val = ch_malloc( ret->e_bv.bv_len );
+
+ bvl = (struct berval *)ret->e_bv.bv_val;
+ ptr = (char *)(bvl + nvals);
+
+ ret->e_name.bv_len = e->e_name.bv_len;
+ ret->e_name.bv_val = ptr;
+ AC_MEMCPY( ptr, e->e_name.bv_val, e->e_name.bv_len );
+ ptr += e->e_name.bv_len;
+ *ptr++ = '\0';
+
+ ret->e_nname.bv_len = e->e_nname.bv_len;
+ ret->e_nname.bv_val = ptr;
+ AC_MEMCPY( ptr, e->e_nname.bv_val, e->e_nname.bv_len );
+ ptr += e->e_name.bv_len;
+ *ptr++ = '\0';
+
+ dst = ret->e_attrs;
+ for (src = e->e_attrs; src; src=src->a_next,dst=dst->a_next ) {
+ int i;
+ dst->a_desc = src->a_desc;
+ dst->a_flags = SLAP_ATTR_DONT_FREE_DATA | SLAP_ATTR_DONT_FREE_VALS;
+ dst->a_vals = bvl;
+ dst->a_numvals = src->a_numvals;
+ for ( i=0; src->a_vals[i].bv_val; i++ ) {
+ bvl->bv_len = src->a_vals[i].bv_len;
+ bvl->bv_val = ptr;
+ AC_MEMCPY( ptr, src->a_vals[i].bv_val, bvl->bv_len );
+ ptr += bvl->bv_len;
+ *ptr++ = '\0';
+ bvl++;
+ }
+ BER_BVZERO(bvl);
+ bvl++;
+ if ( src->a_vals != src->a_nvals ) {
+ dst->a_nvals = bvl;
+ for ( i=0; src->a_nvals[i].bv_val; i++ ) {
+ bvl->bv_len = src->a_nvals[i].bv_len;
+ bvl->bv_val = ptr;
+ AC_MEMCPY( ptr, src->a_nvals[i].bv_val, bvl->bv_len );
+ ptr += bvl->bv_len;
+ *ptr++ = '\0';
+ bvl++;
+ }
+ BER_BVZERO(bvl);
+ bvl++;
+ }
+ }
+ return ret;
+}
+#endif