-/******************************************************************************
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
- * Copyright (C) 2000 Pierangelo Masarati, <ando@sys-net.it>
+ * Copyright 2000-2017 The OpenLDAP Foundation.
* All rights reserved.
*
- * Permission is granted to anyone to use this software for any purpose
- * on any computer system, and to alter it and redistribute it, subject
- * to the following restrictions:
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
*
- * 1. The author is not responsible for the consequences of use of this
- * software, no matter how awful, even if they arise from flaws in it.
- *
- * 2. The origin of this software must not be misrepresented, either by
- * explicit claim or by omission. Since few users ever read sources,
- * credits should appear in the documentation.
- *
- * 3. Altered versions must be plainly marked as such, and must not be
- * misrepresented as being the original software. Since few users
- * ever read sources, credits should appear in the documentation.
- *
- * 4. This notice may not be removed or altered.
- *
- ******************************************************************************/
+ * 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>.
+ */
+/* ACKNOWLEDGEMENT:
+ * This work was initially developed by Pierangelo Masarati for
+ * inclusion in OpenLDAP Software.
+ */
#include <portable.h>
struct rewrite_subst *
rewrite_subst_compile(
struct rewrite_info *info,
- const char *result
+ const char *str
)
{
size_t subs_len;
- struct berval **subs = NULL, **tmps;
- struct rewrite_submatch **submatch = NULL;
+ struct berval *subs = NULL, *tmps;
+ struct rewrite_submatch *submatch = NULL;
struct rewrite_subst *s = NULL;
- const char *begin, *p;
+ char *result, *begin, *p;
int nsub = 0, l;
assert( info != NULL );
- assert( result != NULL );
+ assert( str != NULL );
+
+ result = strdup( str );
+ if ( result == NULL ) {
+ return NULL;
+ }
/*
* Take care of substitution string
*/
for ( p = begin = result, subs_len = 0; p[ 0 ] != '\0'; p++ ) {
-
+
/*
* Keep only single escapes '%'
*/
- if ( p[ 0 ] != REWRITE_SUBMATCH_ESCAPE ) {
+ if ( !IS_REWRITE_SUBMATCH_ESCAPE( p[ 0 ] ) ) {
continue;
}
- if ( p[ 1 ] == REWRITE_SUBMATCH_ESCAPE ) {
- AC_MEMCPY((char *)p, p + 1, strlen( p ) );
+
+ if ( IS_REWRITE_SUBMATCH_ESCAPE( p[ 1 ] ) ) {
+ /* Pull &p[1] over p, including the trailing '\0' */
+ AC_MEMCPY((char *)p, &p[ 1 ], strlen( p ) );
continue;
}
- nsub++;
-
- tmps = (struct berval **)realloc( subs,
- sizeof( struct berval * )*( nsub + 1 ) );
+ tmps = ( struct berval * )realloc( subs,
+ sizeof( struct berval )*( nsub + 1 ) );
if ( tmps == NULL ) {
- /* cleanup */
- return NULL;
+ goto cleanup;
}
subs = tmps;
- subs[ nsub ] = NULL;
/*
* I think an `if l > 0' at runtime is better outside than
l = p - begin;
if ( l > 0 ) {
subs_len += l;
- subs[ nsub - 1 ] =
- calloc( sizeof( struct berval ), 1 );
- if ( subs[ nsub - 1 ] == NULL ) {
- /* cleanup */
- return NULL;
- }
- subs[ nsub - 1 ]->bv_len = l;
- subs[ nsub - 1 ]->bv_val = malloc( l + 1 );
- if ( subs[ nsub - 1 ]->bv_val == NULL ) {
- return NULL;
+ subs[ nsub ].bv_len = l;
+ subs[ nsub ].bv_val = malloc( l + 1 );
+ if ( subs[ nsub ].bv_val == NULL ) {
+ goto cleanup;
}
- AC_MEMCPY( subs[ nsub - 1 ]->bv_val, begin, l );
- subs[ nsub - 1 ]->bv_val[ l ] = '\0';
+ AC_MEMCPY( subs[ nsub ].bv_val, begin, l );
+ subs[ nsub ].bv_val[ l ] = '\0';
} else {
- subs[ nsub - 1 ] = NULL;
+ subs[ nsub ].bv_val = NULL;
+ subs[ nsub ].bv_len = 0;
}
/*
* Substitution pattern
*/
if ( isdigit( (unsigned char) p[ 1 ] ) ) {
+ struct rewrite_submatch *tmpsm;
int d = p[ 1 ] - '0';
- struct rewrite_submatch **tmpsm;
/*
* Add a new value substitution scheme
*/
- tmpsm = realloc( submatch,
- sizeof( struct rewrite_submatch * )*( nsub + 1 ) );
+
+ tmpsm = ( struct rewrite_submatch * )realloc( submatch,
+ sizeof( struct rewrite_submatch )*( nsub + 1 ) );
if ( tmpsm == NULL ) {
- /* cleanup */
- return NULL;
+ goto cleanup;
}
submatch = tmpsm;
- submatch[ nsub ] = NULL;
-
- submatch[ nsub - 1 ] =
- calloc( sizeof( struct rewrite_submatch ), 1 );
- if ( submatch[ nsub - 1 ] == NULL ) {
- /* cleanup */
- return NULL;
- }
- submatch[ nsub - 1 ]->ls_submatch = d;
+ submatch[ nsub ].ls_submatch = d;
/*
* If there is no argument, use default
* (substitute substring as is)
*/
if ( p[ 2 ] != '{' ) {
- submatch[ nsub - 1 ]->ls_type =
+ submatch[ nsub ].ls_type =
REWRITE_SUBMATCH_ASIS;
+ submatch[ nsub ].ls_map = NULL;
begin = ++p + 1;
+
} else {
struct rewrite_map *map;
- submatch[ nsub - 1 ]->ls_type =
+ submatch[ nsub ].ls_type =
REWRITE_SUBMATCH_XMAP;
map = rewrite_xmap_parse( info,
- p + 3, &begin );
+ p + 3, (const char **)&begin );
if ( map == NULL ) {
- /* cleanup */
- return NULL;
+ goto cleanup;
}
+ submatch[ nsub ].ls_map = map;
p = begin - 1;
-
- submatch[ nsub - 1 ]->ls_map = map;
}
/*
*/
} else if ( p[ 1 ] == '{' ) {
struct rewrite_map *map;
- struct rewrite_submatch **tmpsm;
+ struct rewrite_submatch *tmpsm;
- map = rewrite_map_parse( info, p + 2, &begin );
+ map = rewrite_map_parse( info, p + 2,
+ (const char **)&begin );
if ( map == NULL ) {
- /* cleanup */
- return NULL;
+ goto cleanup;
}
p = begin - 1;
/*
* Add a new value substitution scheme
*/
- tmpsm = realloc( submatch,
- sizeof( struct rewrite_submatch * )*( nsub + 1 ) );
+ tmpsm = ( struct rewrite_submatch * )realloc( submatch,
+ sizeof( struct rewrite_submatch )*( nsub + 1 ) );
if ( tmpsm == NULL ) {
- /* cleanup */
- return NULL;
+ rewrite_map_destroy( &map );
+ goto cleanup;
}
submatch = tmpsm;
- submatch[ nsub ] = NULL;
- submatch[ nsub - 1 ] =
- calloc( sizeof( struct rewrite_submatch ), 1 );
- if ( submatch[ nsub - 1 ] == NULL ) {
- /* cleanup */
- return NULL;
- }
-
- submatch[ nsub - 1 ]->ls_type =
+ submatch[ nsub ].ls_type =
REWRITE_SUBMATCH_MAP_W_ARG;
-
- submatch[ nsub - 1 ]->ls_map = map;
+ submatch[ nsub ].ls_map = map;
+
+ /*
+ * Escape '%' ...
+ */
+ } else if ( p[ 1 ] == '%' ) {
+ AC_MEMCPY( &p[ 1 ], &p[ 2 ], strlen( &p[ 1 ] ) );
+ continue;
+
+ } else {
+ goto cleanup;
}
+
+ nsub++;
}
/*
* Last part of string
*/
- tmps = realloc( subs, sizeof( struct berval *)*( nsub + 2 ) );
+ tmps = (struct berval * )realloc( subs, sizeof( struct berval )*( nsub + 1 ) );
if ( tmps == NULL ) {
/*
* XXX need to free the value subst stuff!
*/
- free( submatch );
- return NULL;
+ free( subs );
+ goto cleanup;
}
-
subs = tmps;
- subs[ nsub + 1 ] = NULL;
l = p - begin;
if ( l > 0 ) {
- subs[ nsub ] = calloc( sizeof( struct berval ), 1 );
subs_len += l;
- subs[ nsub ]->bv_len = l;
- subs[ nsub ]->bv_val = malloc( l + 1 );
- AC_MEMCPY( subs[ nsub ]->bv_val, begin, l );
- subs[ nsub ]->bv_val[ l ] = '\0';
+ subs[ nsub ].bv_len = l;
+ subs[ nsub ].bv_val = malloc( l + 1 );
+ if ( subs[ nsub ].bv_val == NULL ) {
+ goto cleanup;
+ }
+ AC_MEMCPY( subs[ nsub ].bv_val, begin, l );
+ subs[ nsub ].bv_val[ l ] = '\0';
} else {
- subs[ nsub ] = NULL;
+ subs[ nsub ].bv_val = NULL;
+ subs[ nsub ].bv_len = 0;
}
s = calloc( sizeof( struct rewrite_subst ), 1 );
if ( s == NULL ) {
- /* cleanup */
- return NULL;
+ goto cleanup;
}
s->lt_subs_len = subs_len;
- s->lt_subs = subs;
- s->lt_num_submatch = nsub;
- s->lt_submatch = submatch;
+ s->lt_subs = subs;
+ s->lt_num_submatch = nsub;
+ s->lt_submatch = submatch;
+ subs = NULL;
+ submatch = NULL;
+
+cleanup:;
+ if ( subs ) {
+ for ( l=0; l<nsub; l++ ) {
+ free( subs[nsub].bv_val );
+ }
+ free( subs );
+ }
+ if ( submatch ) {
+ for ( l=0; l<nsub; l++ ) {
+ free( submatch[nsub].ls_map );
+ }
+ free( submatch );
+ }
+ free( result );
return s;
}
struct berval *val
)
{
- int c, l;
- const char *s;
+ int c, l;
+ const char *s;
assert( submatch != NULL );
assert( submatch->ls_type == REWRITE_SUBMATCH_ASIS
assert( string != NULL );
assert( match != NULL );
assert( val != NULL );
+ assert( val->bv_val == NULL );
c = submatch->ls_submatch;
s = string + match[ c ].rm_so;
l = match[ c ].rm_eo - match[ c ].rm_so;
- val->bv_val = NULL;
val->bv_len = l;
- val->bv_val = calloc( sizeof( char ), l + 1 );
+ val->bv_val = malloc( l + 1 );
if ( val->bv_val == NULL ) {
return REWRITE_ERR;
}
{
struct berval *submatch = NULL;
char *res = NULL;
- int n, l, cl;
+ int n = 0, l, cl;
int rc = REWRITE_REGEXEC_OK;
assert( info != NULL );
assert( match != NULL );
assert( val != NULL );
+ assert( val->bv_val == NULL );
+
val->bv_val = NULL;
val->bv_len = 0;
/*
* Prepare room for submatch expansion
*/
- submatch = calloc( sizeof( struct berval ),
- subst->lt_num_submatch );
- if ( submatch == NULL ) {
- return REWRITE_REGEXEC_ERR;
+ if ( subst->lt_num_submatch > 0 ) {
+ submatch = calloc( sizeof( struct berval ),
+ subst->lt_num_submatch );
+ if ( submatch == NULL ) {
+ return REWRITE_REGEXEC_ERR;
+ }
}
/*
* Resolve submatches (simple subst, map expansion and so).
*/
for ( n = 0, l = 0; n < subst->lt_num_submatch; n++ ) {
- struct berval key;
- int rc;
+ struct berval key = { 0, NULL };
+
+ submatch[ n ].bv_val = NULL;
/*
* Get key
*/
- switch( subst->lt_submatch[ n ]->ls_type ) {
+ switch ( subst->lt_submatch[ n ].ls_type ) {
case REWRITE_SUBMATCH_ASIS:
case REWRITE_SUBMATCH_XMAP:
- rc = submatch_copy( subst->lt_submatch[ n ],
+ rc = submatch_copy( &subst->lt_submatch[ n ],
string, match, &key );
if ( rc != REWRITE_SUCCESS ) {
- free( submatch );
- return REWRITE_REGEXEC_ERR;
+ rc = REWRITE_REGEXEC_ERR;
+ goto cleanup;
}
break;
case REWRITE_SUBMATCH_MAP_W_ARG:
- switch ( subst->lt_submatch[ n ]->ls_map->lm_type ) {
+ switch ( subst->lt_submatch[ n ].ls_map->lm_type ) {
case REWRITE_MAP_GET_OP_VAR:
case REWRITE_MAP_GET_SESN_VAR:
case REWRITE_MAP_GET_PARAM:
rc = REWRITE_SUCCESS;
break;
+
default:
rc = rewrite_subst_apply( info, op,
- subst->lt_submatch[ n ]->ls_map->lm_subst,
+ subst->lt_submatch[ n ].ls_map->lm_subst,
string, match, &key);
}
if ( rc != REWRITE_SUCCESS ) {
- free( submatch );
- return REWRITE_REGEXEC_ERR;
+ goto cleanup;
}
break;
default:
- Debug( LDAP_DEBUG_ANY, "Not Implemented\n%s%s%s",
- "", "", "" );
+ Debug( LDAP_DEBUG_ANY, "Not Implemented\n", 0, 0, 0 );
rc = REWRITE_ERR;
break;
}
if ( rc != REWRITE_SUCCESS ) {
- free( submatch );
- return REWRITE_REGEXEC_ERR;
+ rc = REWRITE_REGEXEC_ERR;
+ goto cleanup;
}
/*
* Resolve key
*/
- switch ( subst->lt_submatch[ n ]->ls_type ) {
+ switch ( subst->lt_submatch[ n ].ls_type ) {
case REWRITE_SUBMATCH_ASIS:
submatch[ n ] = key;
rc = REWRITE_SUCCESS;
case REWRITE_SUBMATCH_XMAP:
rc = rewrite_xmap_apply( info, op,
- subst->lt_submatch[ n ]->ls_map,
+ subst->lt_submatch[ n ].ls_map,
&key, &submatch[ n ] );
+ free( key.bv_val );
+ key.bv_val = NULL;
break;
case REWRITE_SUBMATCH_MAP_W_ARG:
rc = rewrite_map_apply( info, op,
- subst->lt_submatch[ n ]->ls_map,
+ subst->lt_submatch[ n ].ls_map,
&key, &submatch[ n ] );
+ free( key.bv_val );
+ key.bv_val = NULL;
break;
-
+
default:
/*
* When implemented, this might return the
rc = REWRITE_ERR;
break;
}
-
+
if ( rc != REWRITE_SUCCESS ) {
- free( submatch );
- return REWRITE_REGEXEC_ERR;
+ rc = REWRITE_REGEXEC_ERR;
+ goto cleanup;
}
/*
}
/*
- * Alloc result buffer as big as the constant part
- * of the subst pattern and initialize it
+ * Alloc result buffer
*/
l += subst->lt_subs_len;
- res = calloc( sizeof( char ), l + 1 );
+ res = malloc( l + 1 );
if ( res == NULL ) {
- free( submatch );
- return REWRITE_REGEXEC_ERR;
+ rc = REWRITE_REGEXEC_ERR;
+ goto cleanup;
}
/*
- * Apply submatches (possibly resolved thru maps
+ * Apply submatches (possibly resolved thru maps)
*/
for ( n = 0, cl = 0; n < subst->lt_num_submatch; n++ ) {
- if ( subst->lt_subs[ n ] != NULL ) {
- AC_MEMCPY( res + cl, subst->lt_subs[ n ]->bv_val,
- subst->lt_subs[ n ]->bv_len );
- cl += subst->lt_subs[ n ]->bv_len;
+ if ( subst->lt_subs[ n ].bv_val != NULL ) {
+ AC_MEMCPY( res + cl, subst->lt_subs[ n ].bv_val,
+ subst->lt_subs[ n ].bv_len );
+ cl += subst->lt_subs[ n ].bv_len;
}
AC_MEMCPY( res + cl, submatch[ n ].bv_val,
submatch[ n ].bv_len );
cl += submatch[ n ].bv_len;
- free( submatch[ n ].bv_val );
}
- if ( subst->lt_subs[ n ] != NULL ) {
- AC_MEMCPY( res + cl, subst->lt_subs[ n ]->bv_val,
- subst->lt_subs[ n ]->bv_len );
+ if ( subst->lt_subs[ n ].bv_val != NULL ) {
+ AC_MEMCPY( res + cl, subst->lt_subs[ n ].bv_val,
+ subst->lt_subs[ n ].bv_len );
+ cl += subst->lt_subs[ n ].bv_len;
}
+ res[ cl ] = '\0';
val->bv_val = res;
val->bv_len = l;
-
+
+cleanup:;
+ if ( submatch ) {
+ for ( ; --n >= 0; ) {
+ if ( submatch[ n ].bv_val ) {
+ free( submatch[ n ].bv_val );
+ }
+ }
+ free( submatch );
+ }
+
return rc;
}
+/*
+ * frees data
+ */
+int
+rewrite_subst_destroy(
+ struct rewrite_subst **psubst
+)
+{
+ int n;
+ struct rewrite_subst *subst;
+
+ assert( psubst != NULL );
+ assert( *psubst != NULL );
+
+ subst = *psubst;
+
+ for ( n = 0; n < subst->lt_num_submatch; n++ ) {
+ if ( subst->lt_subs[ n ].bv_val ) {
+ free( subst->lt_subs[ n ].bv_val );
+ subst->lt_subs[ n ].bv_val = NULL;
+ }
+
+ switch ( subst->lt_submatch[ n ].ls_type ) {
+ case REWRITE_SUBMATCH_ASIS:
+ break;
+
+ case REWRITE_SUBMATCH_XMAP:
+ rewrite_xmap_destroy( &subst->lt_submatch[ n ].ls_map );
+ break;
+
+ case REWRITE_SUBMATCH_MAP_W_ARG:
+ rewrite_map_destroy( &subst->lt_submatch[ n ].ls_map );
+ break;
+
+ default:
+ break;
+ }
+ }
+
+ free( subst->lt_submatch );
+ subst->lt_submatch = NULL;
+
+ /* last one */
+ if ( subst->lt_subs[ n ].bv_val ) {
+ free( subst->lt_subs[ n ].bv_val );
+ subst->lt_subs[ n ].bv_val = NULL;
+ }
+
+ free( subst->lt_subs );
+ subst->lt_subs = NULL;
+
+ free( subst );
+ *psubst = NULL;
+
+ return 0;
+}
+
projects / openldap / blobdiff