linamh/net-analyzer/net-snmp/files/net-snmp-5.4.1-ipAddressTable-crash-with-double-free.patch

r16804 | magfr | 2008-02-14 02:37:48 +0300 (Чтв, 14 Фев 2008) | 2 lines

NEWS: snmplib: Change CONTAINER_INSERT to not do partial inserts in containers with multiple indices when one insert fails.

http://sourceforge.net/tracker/index.php?func=detail&aid=1733344&group_id=12694&atid=112694

http://bugs.gentoo.org/show_bug.cgi?id=203127

Index: snmplib/container.c
===================================================================
--- snmplib/container.c	(revision 16803)
+++ snmplib/container.c	(revision 16804)
@@ -282,31 +282,41 @@
  * These functions should EXACTLY match the inline version in
  * container.h. If you change one, change them both.
  */
-int CONTAINER_INSERT(netsnmp_container *x, const void *k)
-{ 
-    int rc2, rc = 0;
-    
-    /** start at first container */
-    while(x->prev)
-        x = x->prev;
-    for(; x; x = x->next) {
-        if ((NULL != x->insert_filter) &&
-            (x->insert_filter(x,k) == 1))
-            continue;
-        rc2 = x->insert(x,k);
-        if (rc2) {
+int CONTAINER_INSERT_HELPER(netsnmp_container* x, const void* k)
+{
+    while(x && x->insert_filter && x->insert_filter(x,k) == 1)
+        x = x->next;
+    if(x) {
+        int rc = x->insert(x,k);
+        if(rc)
             snmp_log(LOG_ERR,"error on subcontainer '%s' insert (%d)\n",
-                     x->container_name ? x->container_name : "", rc2);
-            rc = rc2;
+                     x->container_name ? x->container_name : "", rc);
+        else {
+            rc = CONTAINER_INSERT_HELPER(x->next, k);
+            if(rc)
+                x->remove(x,k);
         }
+        return rc;
     }
-    return rc;
+    return 0;
 }
 
 /*------------------------------------------------------------------
  * These functions should EXACTLY match the inline version in
  * container.h. If you change one, change them both.
  */
+int CONTAINER_INSERT(netsnmp_container* x, const void* k)
+{
+    /** start at first container */
+    while(x->prev)
+        x = x->prev;
+    return CONTAINER_INSERT_HELPER(x, k);
+}
+
+/*------------------------------------------------------------------
+ * These functions should EXACTLY match the inline version in
+ * container.h. If you change one, change them both.
+ */
 int CONTAINER_REMOVE(netsnmp_container *x, const void *k)
 {
     int rc2, rc = 0;
Index: include/net-snmp/library/container.h
===================================================================
--- include/net-snmp/library/container.h	(revision 16803)
+++ include/net-snmp/library/container.h	(revision 16804)
@@ -364,32 +364,43 @@
      * container.c. If you change one, change them both.
      */
     NETSNMP_STATIC_INLINE /* gcc docs recommend static w/inline */
-    int CONTAINER_INSERT(netsnmp_container *x, const void *k)
+    int CONTAINER_INSERT_HELPER(netsnmp_container* x, const void* k)
     {
-        int rc2, rc = 0;
-        
-        /** start at first container */
-        while(x->prev)
-            x = x->prev;
-        for(; x; x = x->next) {
-            if ((NULL != x->insert_filter) &&
-                (x->insert_filter(x,k) == 1))
-                continue;
-            rc2 = x->insert(x,k);
-            if (rc2) {
+        while(x && x->insert_filter && x->insert_filter(x,k) == 1)
+            x = x->next;
+        if(x) {
+            int rc = x->insert(x,k);
+            if(rc)
                 snmp_log(LOG_ERR,"error on subcontainer '%s' insert (%d)\n",
-                         x->container_name ? x->container_name : "", rc2);
-                rc = rc2;
+                         x->container_name ? x->container_name : "", rc);
+            else {
+                rc = CONTAINER_INSERT_HELPER(x->next, k);
+                if(rc)
+                    x->remove(x,k);
             }
+            return rc;
         }
-        return rc;
+        return 0;
     }
-    
+
     /*------------------------------------------------------------------
      * These functions should EXACTLY match the function version in
      * container.c. If you change one, change them both.
      */
     NETSNMP_STATIC_INLINE /* gcc docs recommend static w/inline */
+    int CONTAINER_INSERT(netsnmp_container* x, const void* k)
+    {
+        /** start at first container */
+        while(x->prev)
+            x = x->prev;
+        return CONTAINER_INSERT_HELPER(x, k);
+    }
+
+    /*------------------------------------------------------------------
+     * These functions should EXACTLY match the function version in
+     * container.c. If you change one, change them both.
+     */
+    NETSNMP_STATIC_INLINE /* gcc docs recommend static w/inline */
     int CONTAINER_REMOVE(netsnmp_container *x, const void *k)
     {
         int rc2, rc = 0;