mirror of
https://git.openldap.org/openldap/openldap.git
synced 2024-12-21 03:10:25 +08:00
461 lines
7.4 KiB
C
461 lines
7.4 KiB
C
/* $OpenLDAP$ */
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/*
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* Copyright 1998-1999 The OpenLDAP Foundation, All Rights Reserved.
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* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
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*/
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#include "portable.h"
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#include <ac/stdlib.h>
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#include <ac/string.h>
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#include "lber-int.h"
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#if LDAP_MEMORY_DEBUG
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/*
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* LDAP_MEMORY_DEBUG should only be enabled for the purposes of
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* debugging memory management within OpenLDAP libraries and slapd.
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* It should only be enabled by an experienced developer as it
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* causes the inclusion of numerous assert()'s, many of which may
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* be triggered by a prefectly valid program.
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*
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* The code behind this macro is subject to change as needed to
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* support this testing.
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*/
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struct ber_mem_hdr {
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union bmu_align_u {
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ber_len_t bmu_len_t;
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ber_tag_t bmu_tag_t;
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ber_int_t bmu_int_t;
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size_t bmu_size_t;
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void * bmu_voidp;
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double bmu_double;
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long bmu_long;
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long (*bmu_funcp)( double );
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char bmu_char[4];
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} ber_align;
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#define bm_junk ber_align.bmu_len_t
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#define bm_data ber_align.bmu_char[1]
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};
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#define BER_MEM_JUNK 0xdeaddadaU
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static const struct ber_mem_hdr ber_int_mem_hdr = { BER_MEM_JUNK };
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#define BER_MEM_BADADDR ((void *) &ber_int_mem_hdr.bm_data)
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#define BER_MEM_VALID(p) do { \
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assert( (p) != BER_MEM_BADADDR ); \
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assert( (p) != (void *) &ber_int_mem_hdr ); \
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} while(0)
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#else
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#define BER_MEM_VALID(p) /* no-op */
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#endif
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BerMemoryFunctions *ber_int_memory_fns = NULL;
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#if 0 && defined( LDAP_MEMORY_DEBUG )
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void
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ber_int_memfree( void **p )
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{
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assert( p != NULL );
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BER_MEM_VALID( *p );
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ber_memfree( p );
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*p = BER_MEM_BADADDR;
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}
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#endif
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void
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ber_memfree( void *p )
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{
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ber_int_options.lbo_valid = LBER_INITIALIZED;
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if( p == NULL ) {
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return;
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}
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BER_MEM_VALID( p );
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if( ber_int_memory_fns == NULL ) {
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#ifdef LDAP_MEMORY_DEBUG
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struct ber_mem_hdr *mh = (struct ber_mem_hdr *)
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((char *)p - sizeof(struct ber_mem_hdr));
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assert( mh->bm_junk == BER_MEM_JUNK );
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mh->bm_junk = ~BER_MEM_JUNK;
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free( mh );
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#else
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free( p );
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#endif
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return;
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}
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assert( ber_int_memory_fns->bmf_free );
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(*ber_int_memory_fns->bmf_free)( p );
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}
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void
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ber_memvfree( void **vec )
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{
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int i;
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ber_int_options.lbo_valid = LBER_INITIALIZED;
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if( vec == NULL ) {
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return;
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}
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BER_MEM_VALID( vec );
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for ( i = 0; vec[i] != NULL; i++ ) {
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LBER_FREE( vec[i] );
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}
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LBER_FREE( vec );
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}
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void *
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ber_memalloc( ber_len_t s )
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{
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void *new;
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ber_int_options.lbo_valid = LBER_INITIALIZED;
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#ifdef LDAP_MEMORY_DEBUG
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assert( s != 0 );
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#endif
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if( s == 0 ) {
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return NULL;
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}
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if( ber_int_memory_fns == NULL ) {
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#ifdef LDAP_MEMORY_DEBUG
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struct ber_mem_hdr *mh = malloc(s + sizeof(struct ber_mem_hdr));
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if( mh == NULL ) return NULL;
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mh->bm_junk = BER_MEM_JUNK;
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BER_MEM_VALID( &mh[1] );
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new = &mh[1];
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#else
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new = malloc( s );
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#endif
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} else {
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new = (*ber_int_memory_fns->bmf_malloc)( s );
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}
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if( new == NULL ) {
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ber_errno = LBER_ERROR_MEMORY;
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}
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return new;
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}
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void *
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ber_memcalloc( ber_len_t n, ber_len_t s )
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{
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void *new;
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ber_int_options.lbo_valid = LBER_INITIALIZED;
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#ifdef LDAP_MEMORY_DEBUG
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assert( n != 0 && s != 0);
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#endif
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if( n == 0 || s == 0 ) {
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return NULL;
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}
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if( ber_int_memory_fns == NULL ) {
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#ifdef LDAP_MEMORY_DEBUG
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struct ber_mem_hdr *mh = calloc(1,
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(n * s) + sizeof(struct ber_mem_hdr) );
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mh->bm_junk = BER_MEM_JUNK;
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BER_MEM_VALID( &mh[1] );
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new = &mh[1];
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#else
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new = calloc( n, s );
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#endif
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} else {
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new = (*ber_int_memory_fns->bmf_calloc)( n, s );
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}
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if( new == NULL ) {
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ber_errno = LBER_ERROR_MEMORY;
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}
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return new;
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}
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void *
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ber_memrealloc( void* p, ber_len_t s )
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{
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void *new;
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ber_int_options.lbo_valid = LBER_INITIALIZED;
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/* realloc(NULL,s) -> malloc(s) */
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if( p == NULL ) {
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return ber_memalloc( s );
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}
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/* realloc(p,0) -> free(p) */
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if( s == 0 ) {
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ber_memfree( p );
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return NULL;
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}
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BER_MEM_VALID( p );
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if( ber_int_memory_fns == NULL ) {
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#ifdef LDAP_MEMORY_DEBUG
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struct ber_mem_hdr *mh = (struct ber_mem_hdr *)
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((char *)p - sizeof(struct ber_mem_hdr));
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assert( mh->bm_junk == BER_MEM_JUNK );
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p = realloc( mh, s + sizeof(struct ber_mem_hdr) );
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if( p != NULL ) {
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mh = p;
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assert( mh->bm_junk == BER_MEM_JUNK );
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BER_MEM_VALID( &mh[1] );
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new = &mh[1];
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}
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#else
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new = realloc( p, s );
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#endif
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} else {
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new = (*ber_int_memory_fns->bmf_realloc)( p, s );
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}
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if( new == NULL ) {
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ber_errno = LBER_ERROR_MEMORY;
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}
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return new;
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}
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void
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ber_bvfree( struct berval *bv )
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{
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ber_int_options.lbo_valid = LBER_INITIALIZED;
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if( bv == NULL ) {
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return;
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}
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BER_MEM_VALID( bv );
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if ( bv->bv_val != NULL )
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LBER_FREE( bv->bv_val );
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LBER_FREE( (char *) bv );
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}
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void
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ber_bvecfree( struct berval **bv )
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{
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int i;
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ber_int_options.lbo_valid = LBER_INITIALIZED;
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if( bv == NULL ) {
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return;
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}
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BER_MEM_VALID( bv );
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for ( i = 0; bv[i] != NULL; i++ )
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ber_bvfree( bv[i] );
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LBER_FREE( (char *) bv );
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}
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int
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ber_bvecadd( struct berval ***bvec, struct berval *bv )
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{
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ber_len_t i;
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struct berval **new;
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ber_int_options.lbo_valid = LBER_INITIALIZED;
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if( bvec == NULL ) {
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if( bv == NULL ) {
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/* nothing to add */
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return 0;
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}
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*bvec = ber_memalloc( 2 * sizeof(struct berval *) );
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if( *bvec == NULL ) {
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return -1;
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}
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(*bvec)[0] = bv;
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(*bvec)[1] = NULL;
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return 1;
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}
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BER_MEM_VALID( bvec );
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/* count entries */
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for ( i = 0; bvec[i] != NULL; i++ ) {
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/* EMPTY */;
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}
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if( bv == NULL ) {
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return i;
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}
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new = ber_memrealloc( *bvec, (i+2) * sizeof(struct berval *));
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if( new == NULL ) {
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return -1;
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}
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*bvec = new;
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(*bvec)[i++] = bv;
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(*bvec)[i] = NULL;
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return i;
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}
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struct berval *
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ber_bvdup(
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LDAP_CONST struct berval *bv )
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{
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struct berval *new;
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ber_int_options.lbo_valid = LBER_INITIALIZED;
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if( bv == NULL ) {
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ber_errno = LBER_ERROR_PARAM;
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return NULL;
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}
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if(( new = LBER_MALLOC( sizeof(struct berval) )) == NULL ) {
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ber_errno = LBER_ERROR_MEMORY;
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return NULL;
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}
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if ( bv->bv_val == NULL ) {
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new->bv_val = NULL;
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new->bv_len = 0;
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return new;
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}
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if(( new->bv_val = LBER_MALLOC( bv->bv_len + 1 )) == NULL ) {
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ber_errno = LBER_ERROR_MEMORY;
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LBER_FREE( new );
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return NULL;
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}
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SAFEMEMCPY( new->bv_val, bv->bv_val, bv->bv_len );
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new->bv_val[bv->bv_len] = '\0';
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new->bv_len = bv->bv_len;
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return( new );
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}
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struct berval *
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ber_bvstr(
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LDAP_CONST char *s )
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{
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struct berval *new;
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ber_int_options.lbo_valid = LBER_INITIALIZED;
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if( s == NULL ) {
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ber_errno = LBER_ERROR_PARAM;
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return NULL;
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}
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if(( new = LBER_MALLOC( sizeof(struct berval) )) == NULL ) {
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ber_errno = LBER_ERROR_MEMORY;
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return NULL;
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}
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if ( *s == '\0' ) {
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new->bv_val = NULL;
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new->bv_len = 0;
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return new;
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}
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new->bv_val = (char *) s;
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new->bv_len = strlen( s );
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return( new );
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}
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struct berval *
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ber_bvstrdup(
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LDAP_CONST char *s )
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{
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struct berval *new;
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char *p;
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ber_int_options.lbo_valid = LBER_INITIALIZED;
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if( s == NULL ) {
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ber_errno = LBER_ERROR_PARAM;
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return NULL;
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}
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p = LBER_STRDUP( s );
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if( p == NULL ) {
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ber_errno = LBER_ERROR_MEMORY;
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return NULL;
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}
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new = ber_bvstr( p );
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if( new == NULL || *p == '\0' ) {
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LBER_FREE( p );
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}
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return( new );
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}
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char *
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ber_strdup( LDAP_CONST char *s )
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{
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char *p;
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size_t len;
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ber_int_options.lbo_valid = LBER_INITIALIZED;
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#ifdef LDAP_MEMORY_DEBUG
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assert(s != NULL); /* bv damn better point to something */
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#endif
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if( s == NULL ) {
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ber_errno = LBER_ERROR_PARAM;
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return( NULL );
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}
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len = strlen( s ) + 1;
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if ( (p = LBER_MALLOC( len )) == NULL ) {
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ber_errno = LBER_ERROR_MEMORY;
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return( NULL );
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}
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SAFEMEMCPY( p, s, len );
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return( p );
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}
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