From: Adam Dickmeiss <adam@indexdata.dk>
Date: Mon, 1 Nov 2004 20:13:02 +0000 (+0000)
Subject: Fixed bug #148: CQL parser may leak. CQL nodes now allocated using
X-Git-Tag: YAZ.2.0.28~20
X-Git-Url: http://jsfdemo.indexdata.com/cgi-bin?a=commitdiff_plain;h=87ca9b11fd146605fc3b54fcafbcad9869487295;p=yaz-moved-to-github.git

Fixed bug #148: CQL parser may leak. CQL nodes now allocated using
NMEM instead of xmalloc. For this reason, few prototypes were changed in
include/yaz/cql.h.
---

diff --git a/NEWS b/NEWS
index 79b5056..053b98d 100644
--- a/NEWS
+++ b/NEWS
@@ -1,6 +1,10 @@
 Possible compatibility problems with earlier versions marked with '*'.
 
---- 2.0.27 2004/10/XX
+--- 2.0.27 2004/11/01
+
+Fixed bug #148: CQL parser may leak.
+
+* A few prototypes were changed in include/yaz/cql.h.
 
 Fixed bug #176: Dont throw diagnostics on empty SRU args.
 
@@ -11,7 +15,7 @@ Fixed bug #172: RPM builds does not enable SSL.
 Doxyfile.in part of dist. Doxyfile generated by configure.
 
 Configure aborts if any of --with-xml2, --with-openssl, --enable-tcpd 
-ares given and the given component does not exist.
+are given and the corresponding component does not exist.
 
 Extend CCL documentation in YAZ reference. Describe r=r.
 
diff --git a/include/yaz/cql.h b/include/yaz/cql.h
index 73c242e..827693b 100644
--- a/include/yaz/cql.h
+++ b/include/yaz/cql.h
@@ -1,4 +1,4 @@
-/* $Id: cql.h,v 1.9 2004-10-03 22:34:07 adam Exp $
+/* $Id: cql.h,v 1.10 2004-11-01 20:13:02 adam Exp $
    Copyright (C) 2002-2004
    Index Data Aps
 
@@ -14,7 +14,7 @@ See the file LICENSE.
 #ifndef CQL_H_INCLUDED
 #define CQL_H_INCLUDED
 #include <stdio.h>
-#include <yaz/yconfig.h>
+#include <yaz/nmem.h>
 
 YAZ_BEGIN_CDECL
 
@@ -141,10 +141,8 @@ void cql_node_print(struct cql_node *cn);
  * This function creates a search clause node (st).
  */
 YAZ_EXPORT
-struct cql_node *cql_node_mk_sc(const char *index,
-                                const char *relation,
-                                const char *term);
-
+struct cql_node *cql_node_mk_sc(NMEM nmem, const char *index,
+                                const char *relation, const char *term);
 
 /**
  * This function applies a prefix+uri to "unresolved" index and relation
@@ -154,15 +152,14 @@ struct cql_node *cql_node_mk_sc(const char *index,
  * is NULL.
  */
 YAZ_EXPORT
-struct cql_node *cql_apply_prefix(struct cql_node *cn,
-				  const char *prefix,
-				  const char *uri);
+struct cql_node *cql_apply_prefix(NMEM nmem, struct cql_node *cn,
+				  const char *prefix, const char *uri);
 
 /**
  * This function creates a boolean node.
  */
 YAZ_EXPORT
-struct cql_node *cql_node_mk_boolean(const char *op);
+struct cql_node *cql_node_mk_boolean(NMEM nmem, const char *op);
 
 /**
  * Destroys a node and its children.
@@ -174,7 +171,7 @@ void cql_node_destroy(struct cql_node *cn);
  * Duplicate a node (returns a copy of supplied node) .
  */
 YAZ_EXPORT
-struct cql_node *cql_node_dup (struct cql_node *cp);
+struct cql_node *cql_node_dup (NMEM nmem, struct cql_node *cp);
 
 /**
  * This function returns the parse tree of the most recently parsed
diff --git a/src/cql.y b/src/cql.y
index 1206f21..1086549 100644
--- a/src/cql.y
+++ b/src/cql.y
@@ -1,4 +1,4 @@
-/* $Id: cql.y,v 1.7 2004-10-15 00:19:00 adam Exp $
+/* $Id: cql.y,v 1.8 2004-11-01 20:13:02 adam Exp $
    Copyright (C) 2002-2004
    Index Data Aps
 
@@ -64,7 +64,8 @@ See the file LICENSE.
 %%
 
 top: { 
-    $$.rel = cql_node_mk_sc("cql.serverChoice", "scr", 0);
+    $$.rel = cql_node_mk_sc(((CQL_parser) parm)->nmem,
+			    "cql.serverChoice", "scr", 0);
     ((CQL_parser) parm)->top = 0;
 } cqlQuery1 {
     cql_node_destroy($$.rel);
@@ -85,7 +86,8 @@ cqlQuery:
   cqlQuery boolean modifiers { 
       $$.rel = $0.rel;
   } searchClause {
-      struct cql_node *cn = cql_node_mk_boolean($2.buf);
+      struct cql_node *cn = cql_node_mk_boolean(((CQL_parser) parm)->nmem,
+						$2.buf);
       
       cn->u.boolean.modifiers = $3.cql;
       cn->u.boolean.left = $1.cql;
@@ -104,13 +106,13 @@ searchClause:
   }
 |
   searchTerm {
-      struct cql_node *st = cql_node_dup ($0.rel);
-      st->u.st.term = xstrdup($1.buf);
+      struct cql_node *st = cql_node_dup (((CQL_parser) parm)->nmem, $0.rel);
+      st->u.st.term = nmem_strdup(((CQL_parser)parm)->nmem, $1.buf);
       $$.cql = st;
   }
 | 
   index relation modifiers {
-      $$.rel = cql_node_mk_sc($1.buf, $2.buf, 0);
+      $$.rel = cql_node_mk_sc(((CQL_parser) parm)->nmem, $1.buf, $2.buf, 0);
       $$.rel->u.st.modifiers = $3.cql;
   } searchClause {
       $$.cql = $5.cql;
@@ -119,12 +121,14 @@ searchClause:
 | '>' searchTerm '=' searchTerm {
       $$.rel = $0.rel;
   } cqlQuery {
-    $$.cql = cql_apply_prefix($6.cql, $2.buf, $4.buf);
+    $$.cql = cql_apply_prefix(((CQL_parser) parm)->nmem,
+			      $6.cql, $2.buf, $4.buf);
   }
 | '>' searchTerm {
       $$.rel = $0.rel;
   } cqlQuery {
-    $$.cql = cql_apply_prefix($4.cql, 0, $2.buf);
+    $$.cql = cql_apply_prefix(((CQL_parser) parm)->nmem, 
+			      $4.cql, 0, $2.buf);
    }
 ;
 
@@ -136,7 +140,8 @@ boolean:
 
 modifiers: modifiers '/' searchTerm
 { 
-    struct cql_node *mod = cql_node_mk_sc($3.buf, "=", 0);
+    struct cql_node *mod = cql_node_mk_sc(((CQL_parser)parm)->nmem,
+					  $3.buf, "=", 0);
 
     mod->u.st.modifiers = $1.cql;
     $$.cql = mod;
@@ -144,7 +149,8 @@ modifiers: modifiers '/' searchTerm
 |
 modifiers '/' searchTerm mrelation searchTerm
 {
-    struct cql_node *mod = cql_node_mk_sc($3.buf, $4.buf, $5.buf);
+    struct cql_node *mod = cql_node_mk_sc(((CQL_parser)parm)->nmem,
+					  $3.buf, $4.buf, $5.buf);
 
     mod->u.st.modifiers = $1.cql;
     $$.cql = mod;
diff --git a/src/cqltransform.c b/src/cqltransform.c
index 5cca9a6..57284be 100644
--- a/src/cqltransform.c
+++ b/src/cqltransform.c
@@ -1,4 +1,4 @@
-/* $Id: cqltransform.c,v 1.11 2004-10-03 22:34:07 adam Exp $
+/* $Id: cqltransform.c,v 1.12 2004-11-01 20:13:02 adam Exp $
    Copyright (C) 2002-2004
    Index Data Aps
 
@@ -455,6 +455,7 @@ int cql_transform(cql_transform_t ct,
                   void *client_data)
 {
     struct cql_prop_entry *e;
+    NMEM nmem = nmem_create();
 
     ct->error = 0;
     if (ct->addinfo)
@@ -464,11 +465,12 @@ int cql_transform(cql_transform_t ct,
     for (e = ct->entry; e ; e = e->next)
     {
         if (!memcmp(e->pattern, "set.", 4))
-	    cql_apply_prefix(cn, e->pattern+4, e->value);
+	    cql_apply_prefix(nmem, cn, e->pattern+4, e->value);
         else if (!strcmp(e->pattern, "set"))
-	    cql_apply_prefix(cn, 0, e->value);
+	    cql_apply_prefix(nmem, cn, 0, e->value);
     }
     cql_transform_r (ct, cn, pr, client_data);
+    nmem_destroy(nmem);
     return ct->error;
 }
 
diff --git a/src/cqlutil.c b/src/cqlutil.c
index 2061325..577844e 100644
--- a/src/cqlutil.c
+++ b/src/cqlutil.c
@@ -1,4 +1,4 @@
-/* $Id: cqlutil.c,v 1.5 2004-10-03 22:34:07 adam Exp $
+/* $Id: cqlutil.c,v 1.6 2004-11-01 20:13:02 adam Exp $
    Copyright (C) 2002-2004
    Index Data Aps
 
@@ -15,7 +15,6 @@ See the file LICENSE for details.
 #include <stdlib.h>
 #include <string.h>
 
-#include <yaz/xmalloc.h>
 #include <yaz/cql.h>
 
 void cql_fputs(const char *buf, void *client_data)
@@ -24,7 +23,7 @@ void cql_fputs(const char *buf, void *client_data)
     fputs(buf, f);
 }
 
-struct cql_node *cql_node_dup (struct cql_node *cp)
+struct cql_node *cql_node_dup (NMEM nmem, struct cql_node *cp)
 {
     struct cql_node *cn = 0;
 
@@ -33,51 +32,52 @@ struct cql_node *cql_node_dup (struct cql_node *cp)
     switch (cp->which)
     {
     case CQL_NODE_ST:
-        cn = cql_node_mk_sc(cp->u.st.index,
+        cn = cql_node_mk_sc(nmem, cp->u.st.index,
                             cp->u.st.relation,
                             cp->u.st.term);
-        cn->u.st.modifiers = cql_node_dup(cp->u.st.modifiers);
+        cn->u.st.modifiers = cql_node_dup(nmem, cp->u.st.modifiers);
 	cn->u.st.index_uri = cp->u.st.index_uri ? 
-	    xstrdup(cp->u.st.index_uri) : 0;
+	    nmem_strdup(nmem, cp->u.st.index_uri) : 0;
 	cn->u.st.relation_uri = cp->u.st.relation_uri ?
-	    xstrdup(cp->u.st.relation_uri) : 0;
+	    nmem_strdup(nmem, cp->u.st.relation_uri) : 0;
         break;
     case CQL_NODE_BOOL:
-        cn = cql_node_mk_boolean(cp->u.boolean.value);
-        cn->u.boolean.left = cql_node_dup(cp->u.boolean.left);
-        cn->u.boolean.right = cql_node_dup(cp->u.boolean.right);
+        cn = cql_node_mk_boolean(nmem, cp->u.boolean.value);
+        cn->u.boolean.left = cql_node_dup(nmem, cp->u.boolean.left);
+        cn->u.boolean.right = cql_node_dup(nmem, cp->u.boolean.right);
     }
     return cn;
 }
 
-struct cql_node *cql_node_mk_sc(const char *index,
+struct cql_node *cql_node_mk_sc(NMEM nmem,
+				const char *index,
                                 const char *relation,
                                 const char *term)
 {
-    struct cql_node *p = (struct cql_node *) xmalloc(sizeof(*p));
+    struct cql_node *p = (struct cql_node *) nmem_malloc(nmem, sizeof(*p));
     p->which = CQL_NODE_ST;
     p->u.st.index = 0;
     if (index)
-        p->u.st.index = xstrdup(index);
+        p->u.st.index = nmem_strdup(nmem, index);
     p->u.st.index_uri = 0;
     p->u.st.term = 0;
     if (term)
-        p->u.st.term = xstrdup(term);
+        p->u.st.term = nmem_strdup(nmem, term);
     p->u.st.relation = 0;
     if (relation)
-        p->u.st.relation = xstrdup(relation);
+        p->u.st.relation = nmem_strdup(nmem, relation);
     p->u.st.relation_uri = 0;
     p->u.st.modifiers = 0;
     return p;
 }
 
-struct cql_node *cql_node_mk_boolean(const char *op)
+struct cql_node *cql_node_mk_boolean(NMEM nmem, const char *op)
 {
-    struct cql_node *p = (struct cql_node *) xmalloc(sizeof(*p));
+    struct cql_node *p = (struct cql_node *) nmem_malloc(nmem, sizeof(*p));
     p->which = CQL_NODE_BOOL;
     p->u.boolean.value = 0;
     if (op)
-        p->u.boolean.value = xstrdup(op);
+        p->u.boolean.value = nmem_strdup(nmem, op);
     p->u.boolean.left = 0;
     p->u.boolean.right = 0;
     p->u.boolean.modifiers = 0;
@@ -89,7 +89,8 @@ const char *cql_uri()
     return "info:srw/cql-context-set/1/cql-v1.1";
 }
 
-struct cql_node *cql_apply_prefix(struct cql_node *n, const char *prefix,
+struct cql_node *cql_apply_prefix(NMEM nmem,
+				  struct cql_node *n, const char *prefix,
 				  const char *uri)
 {
     if (n->which == CQL_NODE_ST)
@@ -101,14 +102,13 @@ struct cql_node *cql_apply_prefix(struct cql_node *n, const char *prefix,
 		strlen(prefix) == (size_t) (cp - n->u.st.index) &&
 		!memcmp(n->u.st.index, prefix, strlen(prefix)))
 	    {
-		char *nval = xstrdup(cp+1);
-		n->u.st.index_uri = xstrdup(uri);
-		xfree (n->u.st.index);
+		char *nval = nmem_strdup(nmem, cp+1);
+		n->u.st.index_uri = nmem_strdup(nmem, uri);
 		n->u.st.index = nval;
 	    }
 	    else if (!prefix && !cp)
 	    {
-		n->u.st.index_uri = xstrdup(uri);
+		n->u.st.index_uri = nmem_strdup(nmem, uri);
 	    }
 	}
 	if (!n->u.st.relation_uri && n->u.st.relation)
@@ -118,17 +118,16 @@ struct cql_node *cql_apply_prefix(struct cql_node *n, const char *prefix,
 		strlen(prefix) == (size_t)(cp - n->u.st.relation) &&
 		!memcmp(n->u.st.relation, prefix, strlen(prefix)))
 	    {
-		char *nval = xstrdup(cp+1);
-		n->u.st.relation_uri = xstrdup(uri);
-		xfree (n->u.st.relation);
+		char *nval = nmem_strdup(nmem, cp+1);
+		n->u.st.relation_uri = nmem_strdup(nmem, uri);
 		n->u.st.relation = nval;
 	    }
 	}
     }
     else if (n->which == CQL_NODE_BOOL)
     {
-	cql_apply_prefix(n->u.boolean.left, prefix, uri);
-	cql_apply_prefix(n->u.boolean.right, prefix, uri);
+	cql_apply_prefix(nmem, n->u.boolean.left, prefix, uri);
+	cql_apply_prefix(nmem, n->u.boolean.right, prefix, uri);
     }
     return n;
 }
@@ -140,18 +139,11 @@ void cql_node_destroy(struct cql_node *cn)
     switch (cn->which)
     {
     case CQL_NODE_ST:
-        xfree (cn->u.st.index);
-        xfree (cn->u.st.relation);
-        xfree (cn->u.st.term);
-	xfree (cn->u.st.index_uri);
-	xfree (cn->u.st.relation_uri);
         cql_node_destroy(cn->u.st.modifiers);
         break;
     case CQL_NODE_BOOL:
-        xfree (cn->u.boolean.value);
         cql_node_destroy(cn->u.boolean.left);
         cql_node_destroy(cn->u.boolean.right);
         cql_node_destroy(cn->u.boolean.modifiers);
     }
-    xfree (cn);
 }