snmp support

1 files changed, 946 insertions, 0 deletions

diff --git a/accel-pppd/extra/net-snmp/sessionTable_interface.c b/accel-pppd/extra/net-snmp/sessionTable_interface.c
new file mode 100644
index 00000000..cf60f910
--- /dev/null
+++ b/accel-pppd/extra/net-snmp/sessionTable_interface.c
@@ -0,0 +1,946 @@
+/*
+ * Note: this file originally auto-generated by mib2c using
+ *       version : 15899 $ of $ 
+ *
+ * $Id:$
+ */
+/*
+ * *********************************************************************
+ * *********************************************************************
+ * *********************************************************************
+ * ***                                                               ***
+ * ***  NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE  ***
+ * ***                                                               ***
+ * ***                                                               ***
+ * ***       THIS FILE DOES NOT CONTAIN ANY USER EDITABLE CODE.      ***
+ * ***                                                               ***
+ * ***                                                               ***
+ * ***       THE GENERATED CODE IS INTERNAL IMPLEMENTATION, AND      ***
+ * ***                                                               ***
+ * ***                                                               ***
+ * ***    IS SUBJECT TO CHANGE WITHOUT WARNING IN FUTURE RELEASES.   ***
+ * ***                                                               ***
+ * ***                                                               ***
+ * *********************************************************************
+ * *********************************************************************
+ * *********************************************************************
+ */
+
+/* standard Net-SNMP includes */
+#include <net-snmp/net-snmp-config.h>
+#include <net-snmp/net-snmp-includes.h>
+#include <net-snmp/agent/net-snmp-agent-includes.h>
+
+/* include our parent header */
+#include "sessionTable.h"
+
+
+#include <net-snmp/agent/table_container.h>
+#include <net-snmp/library/container.h>
+
+#include "sessionTable_interface.h"
+
+#include <ctype.h>
+
+/**********************************************************************
+ **********************************************************************
+ ***
+ *** Table sessionTable
+ ***
+ **********************************************************************
+ **********************************************************************/
+/*
+ * ACCEL-PPP-MIB::sessionTable is subid 1 of accelPPPSessions.
+ * Its status is Current.
+ * OID: .1.3.6.1.4.1.8072.100.2.1, length: 10
+*/
+typedef struct sessionTable_interface_ctx_s {
+
+   netsnmp_container              *container;
+   netsnmp_cache                  *cache;
+
+   sessionTable_registration *      user_ctx;
+   
+   netsnmp_table_registration_info  tbl_info;
+
+   netsnmp_baby_steps_access_methods access_multiplexer;
+
+} sessionTable_interface_ctx;
+
+static sessionTable_interface_ctx sessionTable_if_ctx;
+
+static void _sessionTable_container_init(
+    sessionTable_interface_ctx *if_ctx);
+static void _sessionTable_container_shutdown(
+    sessionTable_interface_ctx *if_ctx);
+
+
+netsnmp_container *
+sessionTable_container_get( void )
+{
+    return sessionTable_if_ctx.container;
+}
+
+sessionTable_registration *
+sessionTable_registration_get( void )
+{
+    return sessionTable_if_ctx.user_ctx;
+}
+
+sessionTable_registration *
+sessionTable_registration_set( sessionTable_registration * newreg )
+{
+    sessionTable_registration * old = sessionTable_if_ctx.user_ctx;
+    sessionTable_if_ctx.user_ctx = newreg;
+    return old;
+}
+
+int
+sessionTable_container_size( void )
+{
+    return CONTAINER_SIZE(sessionTable_if_ctx.container);
+}
+
+/*
+ * mfd multiplexer modes
+ */
+static Netsnmp_Node_Handler _mfd_sessionTable_pre_request;
+static Netsnmp_Node_Handler _mfd_sessionTable_post_request;
+static Netsnmp_Node_Handler _mfd_sessionTable_object_lookup;
+static Netsnmp_Node_Handler _mfd_sessionTable_get_values;
+/**
+ * @internal
+ * Initialize the table sessionTable 
+ *    (Define its contents and how it's structured)
+ */
+void
+_sessionTable_initialize_interface(sessionTable_registration * reg_ptr,  u_long flags)
+{
+    netsnmp_baby_steps_access_methods *access_multiplexer =
+        &sessionTable_if_ctx.access_multiplexer;
+    netsnmp_table_registration_info *tbl_info = &sessionTable_if_ctx.tbl_info;
+    netsnmp_handler_registration *reginfo;
+    netsnmp_mib_handler *handler;
+    int    mfd_modes = 0;
+
+    DEBUGMSGTL(("internal:sessionTable:_sessionTable_initialize_interface","called\n"));
+
+
+    /*************************************************
+     *
+     * save interface context for sessionTable
+     */
+    /*
+     * Setting up the table's definition
+     */
+    netsnmp_table_helper_add_indexes(tbl_info,
+                                  ASN_OCTET_STR, /** index: sesSID */
+                             0);
+
+    /*  Define the minimum and maximum accessible columns.  This
+        optimizes retrival. */
+    tbl_info->min_column = SESSIONTABLE_MIN_COL;
+    tbl_info->max_column = SESSIONTABLE_MAX_COL;
+
+    /*
+     * save users context
+     */
+    sessionTable_if_ctx.user_ctx = reg_ptr;
+
+    /*
+     * call data access initialization code
+     */
+    sessionTable_init_data(reg_ptr);
+
+    /*
+     * set up the container
+     */
+    _sessionTable_container_init(&sessionTable_if_ctx);
+    if (NULL == sessionTable_if_ctx.container) {
+        snmp_log(LOG_ERR,"could not initialize container for sessionTable\n");
+        return;
+    }
+    
+    /*
+     * access_multiplexer: REQUIRED wrapper for get request handling
+     */
+    access_multiplexer->object_lookup = _mfd_sessionTable_object_lookup;
+    access_multiplexer->get_values = _mfd_sessionTable_get_values;
+
+    /*
+     * no wrappers yet
+     */
+    access_multiplexer->pre_request = _mfd_sessionTable_pre_request;
+    access_multiplexer->post_request = _mfd_sessionTable_post_request;
+
+
+    /*************************************************
+     *
+     * Create a registration, save our reg data, register table.
+     */
+    DEBUGMSGTL(("sessionTable:init_sessionTable",
+                "Registering sessionTable as a mibs-for-dummies table.\n"));		 
+    handler = netsnmp_baby_steps_access_multiplexer_get(access_multiplexer);
+    reginfo = netsnmp_handler_registration_create("sessionTable", handler,
+                                                  sessionTable_oid,
+                                                  sessionTable_oid_size,
+                                                  HANDLER_CAN_BABY_STEP |
+                                                  HANDLER_CAN_RONLY
+                                                  );
+    if(NULL == reginfo) {
+        snmp_log(LOG_ERR,"error registering table sessionTable\n");
+        return;
+    }
+    reginfo->my_reg_void = &sessionTable_if_ctx;
+
+    /*************************************************
+     *
+     * set up baby steps handler, create it and inject it
+     */
+    if( access_multiplexer->object_lookup )
+        mfd_modes |= BABY_STEP_OBJECT_LOOKUP;
+    if( access_multiplexer->set_values )
+        mfd_modes |= BABY_STEP_SET_VALUES;
+    if( access_multiplexer->irreversible_commit )
+        mfd_modes |= BABY_STEP_IRREVERSIBLE_COMMIT;
+    if( access_multiplexer->object_syntax_checks )
+        mfd_modes |= BABY_STEP_CHECK_OBJECT;
+
+    if( access_multiplexer->pre_request )
+        mfd_modes |= BABY_STEP_PRE_REQUEST;
+    if( access_multiplexer->post_request )
+        mfd_modes |= BABY_STEP_POST_REQUEST;
+    
+    if( access_multiplexer->undo_setup )
+        mfd_modes |= BABY_STEP_UNDO_SETUP;
+    if( access_multiplexer->undo_cleanup )
+        mfd_modes |= BABY_STEP_UNDO_CLEANUP;
+    if( access_multiplexer->undo_sets )
+        mfd_modes |= BABY_STEP_UNDO_SETS;
+    
+    if( access_multiplexer->row_creation )
+        mfd_modes |= BABY_STEP_ROW_CREATE;
+    if( access_multiplexer->consistency_checks )
+        mfd_modes |= BABY_STEP_CHECK_CONSISTENCY;
+    if( access_multiplexer->commit )
+        mfd_modes |= BABY_STEP_COMMIT;
+    if( access_multiplexer->undo_commit )
+        mfd_modes |= BABY_STEP_UNDO_COMMIT;
+    
+    handler = netsnmp_baby_steps_handler_get(mfd_modes);
+    netsnmp_inject_handler(reginfo, handler);
+
+    /*************************************************
+     *
+     * inject row_merge helper with prefix rootoid_len + 2 (entry.col)
+     */
+    handler = netsnmp_get_row_merge_handler(reginfo->rootoid_len + 2);
+    netsnmp_inject_handler(reginfo, handler);
+
+    /*************************************************
+     *
+     * inject container_table helper
+     */
+    handler =
+        netsnmp_container_table_handler_get(tbl_info,
+                                            sessionTable_if_ctx.container,
+                                            TABLE_CONTAINER_KEY_NETSNMP_INDEX);
+    netsnmp_inject_handler( reginfo, handler );
+
+    /*************************************************
+     *
+     * inject cache helper
+     */
+    if(NULL != sessionTable_if_ctx.cache) {
+        handler = netsnmp_cache_handler_get(sessionTable_if_ctx.cache);
+        netsnmp_inject_handler( reginfo, handler );
+    }
+
+    /*
+     * register table
+     */
+    netsnmp_register_table(reginfo, tbl_info);
+
+} /* _sessionTable_initialize_interface */
+
+/**
+ * @internal
+ * Shutdown the table sessionTable
+ */
+void
+_sessionTable_shutdown_interface(sessionTable_registration * reg_ptr)
+{
+    /*
+     * shutdown the container
+     */
+    _sessionTable_container_shutdown(&sessionTable_if_ctx);
+}
+
+void
+sessionTable_valid_columns_set(netsnmp_column_info *vc)
+{
+    sessionTable_if_ctx.tbl_info.valid_columns = vc;
+} /* sessionTable_valid_columns_set */
+
+/**
+ * @internal
+ * convert the index component stored in the context to an oid
+ */
+int
+sessionTable_index_to_oid(netsnmp_index *oid_idx,
+                         sessionTable_mib_index *mib_idx)
+{
+    int err = SNMP_ERR_NOERROR;
+    
+    /*
+     * temp storage for parsing indexes
+     */
+    /*
+     * sesSID(1)/OCTETSTR/ASN_OCTET_STR/char(char)//L/A/w/e/R/d/h
+     */
+    netsnmp_variable_list var_sesSID;
+
+    /*
+     * set up varbinds
+     */
+    memset( &var_sesSID, 0x00, sizeof(var_sesSID) );
+    var_sesSID.type = ASN_OCTET_STR;
+
+    /*
+     * chain temp index varbinds together
+     */
+    var_sesSID.next_variable =  NULL;
+
+
+    DEBUGMSGTL(("verbose:sessionTable:sessionTable_index_to_oid","called\n"));
+
+        /* sesSID(1)/OCTETSTR/ASN_OCTET_STR/char(char)//L/A/w/e/R/d/h */
+    snmp_set_var_value(&var_sesSID, (u_char*)&mib_idx->sesSID,
+                       mib_idx->sesSID_len * sizeof(mib_idx->sesSID[0]));
+
+
+    err = build_oid_noalloc(oid_idx->oids, oid_idx->len, &oid_idx->len,
+                           NULL, 0, &var_sesSID);
+    if(err)
+        snmp_log(LOG_ERR,"error %d converting index to oid\n", err);
+
+    /*
+     * parsing may have allocated memory. free it.
+     */
+    snmp_reset_var_buffers( &var_sesSID );
+
+    return err;
+} /* sessionTable_index_to_oid */
+
+/**
+ * extract sessionTable indexes from a netsnmp_index
+ *
+ * @retval SNMP_ERR_NOERROR  : no error
+ * @retval SNMP_ERR_GENERR   : error
+ */
+int
+sessionTable_index_from_oid(netsnmp_index *oid_idx,
+                         sessionTable_mib_index *mib_idx)
+{
+    int err = SNMP_ERR_NOERROR;
+    
+    /*
+     * temp storage for parsing indexes
+     */
+    /*
+     * sesSID(1)/OCTETSTR/ASN_OCTET_STR/char(char)//L/A/w/e/R/d/h
+     */
+    netsnmp_variable_list var_sesSID;
+
+    /*
+     * set up varbinds
+     */
+    memset( &var_sesSID, 0x00, sizeof(var_sesSID) );
+    var_sesSID.type = ASN_OCTET_STR;
+
+    /*
+     * chain temp index varbinds together
+     */
+    var_sesSID.next_variable =  NULL;
+
+
+    DEBUGMSGTL(("verbose:sessionTable:sessionTable_index_from_oid","called\n"));
+
+    /*
+     * parse the oid into the individual index components
+     */
+    err = parse_oid_indexes( oid_idx->oids, oid_idx->len,
+                             &var_sesSID );
+    if (err == SNMP_ERR_NOERROR) {
+        /*
+         * copy out values
+         */
+    /*
+     * NOTE: val_len is in bytes, sesSID_len might not be
+     */
+         if(var_sesSID.val_len > sizeof(mib_idx->sesSID))
+             err = SNMP_ERR_GENERR;
+         else {
+             memcpy(mib_idx->sesSID, var_sesSID.val.string, var_sesSID.val_len);
+             mib_idx->sesSID_len = var_sesSID.val_len / sizeof(mib_idx->sesSID[0]);
+         }
+
+
+    }
+
+    /*
+     * parsing may have allocated memory. free it.
+     */
+    snmp_reset_var_buffers( &var_sesSID );
+
+    return err;
+} /* sessionTable_index_from_oid */
+
+
+/* *********************************************************************
+ * @internal
+ * allocate resources for a sessionTable_rowreq_ctx
+ */
+sessionTable_rowreq_ctx *
+sessionTable_allocate_rowreq_ctx(sessionTable_data *data, void *user_init_ctx)
+{
+    sessionTable_rowreq_ctx *rowreq_ctx =
+                  SNMP_MALLOC_TYPEDEF(sessionTable_rowreq_ctx);
+
+    DEBUGMSGTL(("internal:sessionTable:sessionTable_allocate_rowreq_ctx","called\n"));
+
+    if(NULL == rowreq_ctx) {
+        snmp_log(LOG_ERR,"Couldn't allocate memory for a "
+                 "sessionTable_rowreq_ctx.\n");
+        return NULL;
+    }
+    else {
+        if(NULL != data) {
+            /*
+             * track if we got data from user
+             */
+            rowreq_ctx->rowreq_flags |= MFD_ROW_DATA_FROM_USER;
+            rowreq_ctx->data = data;
+        }
+        else if (NULL == (rowreq_ctx->data = sessionTable_allocate_data())) {
+            SNMP_FREE(rowreq_ctx);
+            return NULL;
+        }
+    }
+
+    /*
+     * undo context will be allocated when needed (in *_undo_setup)
+     */
+
+    rowreq_ctx->oid_idx.oids = rowreq_ctx->oid_tmp;
+
+    rowreq_ctx->sessionTable_data_list = NULL;
+
+    /*
+     * if we allocated data, call init routine
+     */
+    if (!(rowreq_ctx->rowreq_flags & MFD_ROW_DATA_FROM_USER)) {
+        if(SNMPERR_SUCCESS !=
+            sessionTable_rowreq_ctx_init(rowreq_ctx, user_init_ctx)) {
+           sessionTable_release_rowreq_ctx(rowreq_ctx);
+           rowreq_ctx = NULL;
+        }
+    }
+
+    return rowreq_ctx;
+} /* sessionTable_allocate_rowreq_ctx */
+
+/*
+ * @internal
+ * release resources for a sessionTable_rowreq_ctx
+ */
+void
+sessionTable_release_rowreq_ctx(sessionTable_rowreq_ctx *rowreq_ctx)
+{
+    DEBUGMSGTL(("internal:sessionTable:sessionTable_release_rowreq_ctx","called\n"));
+
+    netsnmp_assert(NULL != rowreq_ctx);
+    
+    sessionTable_rowreq_ctx_cleanup(rowreq_ctx);
+
+    /*
+     * for non-transient data, don't free data we got from the user
+     */
+    if ((rowreq_ctx->data) &&
+        !(rowreq_ctx->rowreq_flags & MFD_ROW_DATA_FROM_USER))
+        sessionTable_release_data(rowreq_ctx->data);
+ 
+    /*
+     * free index oid pointer
+     */
+    if(rowreq_ctx->oid_idx.oids != rowreq_ctx->oid_tmp)
+        free(rowreq_ctx->oid_idx.oids);
+
+    SNMP_FREE(rowreq_ctx);
+} /* sessionTable_release_rowreq_ctx */
+
+/**
+ * @internal
+ * wrapper
+ */
+static int
+_mfd_sessionTable_pre_request(netsnmp_mib_handler *handler,
+                            netsnmp_handler_registration *reginfo,
+                            netsnmp_agent_request_info *agtreq_info,
+                            netsnmp_request_info *requests)
+{
+    int rc;
+
+    DEBUGMSGTL(("internal:sessionTable:_mfd_sessionTable_pre_request",
+                "called\n"));
+    
+    if (1 != netsnmp_row_merge_status_first(reginfo, agtreq_info)) {
+        DEBUGMSGTL(("internal:sessionTable",
+                    "skipping additional pre_request\n"));
+        return SNMP_ERR_NOERROR;
+    }
+        
+    rc = sessionTable_pre_request(sessionTable_if_ctx.user_ctx);
+    if (MFD_SUCCESS != rc) {
+        /*
+         * nothing we can do about it but log it
+         */
+        DEBUGMSGTL(("sessionTable","error %d from "
+                    "sessionTable_pre_request\n", rc));
+        netsnmp_request_set_error_all(requests, SNMP_VALIDATE_ERR(rc));
+    }
+    
+    return SNMP_ERR_NOERROR;
+} /* _mfd_sessionTable_pre_request */
+
+/**
+ * @internal
+ * wrapper
+ */
+static int
+_mfd_sessionTable_post_request(netsnmp_mib_handler *handler,
+                             netsnmp_handler_registration *reginfo,
+                             netsnmp_agent_request_info *agtreq_info,
+                             netsnmp_request_info *requests)
+{
+    sessionTable_rowreq_ctx *rowreq_ctx =
+                  netsnmp_container_table_row_extract(requests);
+    int rc, packet_rc;
+
+    DEBUGMSGTL(("internal:sessionTable:_mfd_sessionTable_post_request",
+                "called\n"));
+
+    /*
+     * release row context, if deleted
+     */
+    if (rowreq_ctx && (rowreq_ctx->rowreq_flags & MFD_ROW_DELETED))
+        sessionTable_release_rowreq_ctx(rowreq_ctx);
+
+    /*
+     * wait for last call before calling user
+     */
+    if (1 != netsnmp_row_merge_status_last(reginfo, agtreq_info)) {
+        DEBUGMSGTL(("internal:sessionTable",
+                    "waiting for last post_request\n"));
+        return SNMP_ERR_NOERROR;
+    }
+    
+    packet_rc = netsnmp_check_all_requests_error(agtreq_info->asp, 0);
+    rc = sessionTable_post_request(sessionTable_if_ctx.user_ctx,packet_rc);
+    if (MFD_SUCCESS != rc) {
+        /*
+         * nothing we can do about it but log it
+         */
+        DEBUGMSGTL(("sessionTable","error %d from "
+                    "sessionTable_post_request\n", rc));
+    }
+    
+    return SNMP_ERR_NOERROR;
+} /* _mfd_sessionTable_post_request */
+
+/**
+ * @internal
+ * wrapper
+ */
+static int
+_mfd_sessionTable_object_lookup(netsnmp_mib_handler *handler,
+                         netsnmp_handler_registration *reginfo,
+                         netsnmp_agent_request_info *agtreq_info,
+                         netsnmp_request_info *requests)
+{
+    int                    rc = SNMP_ERR_NOERROR;
+    sessionTable_rowreq_ctx *rowreq_ctx =
+                  netsnmp_container_table_row_extract(requests);
+    
+    DEBUGMSGTL(("internal:sessionTable:_mfd_sessionTable_object_lookup","called\n"));
+
+    /*
+     * get our context from mfd
+     * sessionTable_interface_ctx *if_ctx =
+     *             (sessionTable_interface_ctx *)reginfo->my_reg_void;
+     */
+
+    if(NULL == rowreq_ctx) {
+        rc = SNMP_ERR_NOCREATION;
+    }
+
+    if (MFD_SUCCESS != rc)
+        netsnmp_request_set_error_all(requests, rc);
+    else
+        sessionTable_row_prep(rowreq_ctx);
+
+    return SNMP_VALIDATE_ERR(rc);
+} /* _mfd_sessionTable_object_lookup */
+
+/***********************************************************************
+ *
+ * GET processing
+ *
+ ***********************************************************************/
+/*
+ * @internal
+ * Retrieve the value for a particular column
+ */
+NETSNMP_STATIC_INLINE int
+_sessionTable_get_column( sessionTable_rowreq_ctx *rowreq_ctx,
+                       netsnmp_variable_list *var, int column )
+{
+    int rc = SNMPERR_SUCCESS;
+    
+    DEBUGMSGTL(("internal:sessionTable:_mfd_sessionTable_get_column",
+                "called for %d\n", column));
+
+
+    netsnmp_assert(NULL != rowreq_ctx);
+
+    switch(column) {
+
+    /* (INDEX) sesSID(1)/OCTETSTR/ASN_OCTET_STR/char(char)//L/A/w/e/R/d/h */
+    case COLUMN_SESSID:
+    var->type = ASN_OCTET_STR;
+    /*
+     * NOTE: val_len is in bytes, sesSID_len might not be (e.g. oids)
+     */
+        if (var->val_len < (rowreq_ctx->tbl_idx.sesSID_len *
+                            sizeof(rowreq_ctx->tbl_idx.sesSID[0]))) {
+           var->val.string = malloc(rowreq_ctx->tbl_idx.sesSID_len *
+                                    sizeof(rowreq_ctx->tbl_idx.sesSID[0]));
+        }
+        var->val_len = rowreq_ctx->tbl_idx.sesSID_len * sizeof(rowreq_ctx->tbl_idx.sesSID[0]);
+        memcpy( var->val.string, rowreq_ctx->tbl_idx.sesSID, var->val_len );
+        break;
+
+    /* sesIfName(2)/OCTETSTR/ASN_OCTET_STR/char(char)//L/A/w/e/r/d/h */
+    case COLUMN_SESIFNAME:
+    var->type = ASN_OCTET_STR;
+rc = sesIfName_get(rowreq_ctx, (char **)&var->val.string, &var->val_len );
+        break;
+
+    /* sesUsername(3)/OCTETSTR/ASN_OCTET_STR/char(char)//L/A/w/e/r/d/h */
+    case COLUMN_SESUSERNAME:
+    var->type = ASN_OCTET_STR;
+rc = sesUsername_get(rowreq_ctx, (char **)&var->val.string, &var->val_len );
+        break;
+
+    /* sesIP(4)/InetAddressIPv4/ASN_OCTET_STR/char(char)//L/A/w/e/R/d/H */
+    case COLUMN_SESIP:
+    var->type = ASN_OCTET_STR;
+rc = sesIP_get(rowreq_ctx, (char **)&var->val.string, &var->val_len );
+        break;
+
+    /* sesType(5)/INTEGER/ASN_INTEGER/long(u_long)//l/A/w/E/r/d/h */
+    case COLUMN_SESTYPE:
+    var->val_len = sizeof(u_long);
+    var->type = ASN_INTEGER;
+rc = sesType_get(rowreq_ctx, (u_long *)var->val.string );
+        break;
+
+    /* sesState(6)/INTEGER/ASN_INTEGER/long(u_long)//l/A/w/E/r/d/h */
+    case COLUMN_SESSTATE:
+    var->val_len = sizeof(u_long);
+    var->type = ASN_INTEGER;
+rc = sesState_get(rowreq_ctx, (u_long *)var->val.string );
+        break;
+
+    /* sesUptime(7)/GAUGE/ASN_GAUGE/u_long(u_long)//l/A/w/e/r/d/h */
+    case COLUMN_SESUPTIME:
+    var->val_len = sizeof(u_long);
+    var->type = ASN_GAUGE;
+rc = sesUptime_get(rowreq_ctx, (u_long *)var->val.string );
+        break;
+
+    /* sesCallingSID(8)/OCTETSTR/ASN_OCTET_STR/char(char)//L/A/w/e/r/d/h */
+    case COLUMN_SESCALLINGSID:
+    var->type = ASN_OCTET_STR;
+rc = sesCallingSID_get(rowreq_ctx, (char **)&var->val.string, &var->val_len );
+        break;
+
+    /* sesCalledSID(9)/OCTETSTR/ASN_OCTET_STR/char(char)//L/A/w/e/r/d/h */
+    case COLUMN_SESCALLEDSID:
+    var->type = ASN_OCTET_STR;
+rc = sesCalledSID_get(rowreq_ctx, (char **)&var->val.string, &var->val_len );
+        break;
+
+     default:
+        if (SESSIONTABLE_MIN_COL <= column && column <= SESSIONTABLE_MAX_COL) {
+            DEBUGMSGTL(("internal:sessionTable:_mfd_sessionTable_get_column",
+                "assume column %d is reserved\n", column));
+            rc = MFD_SKIP;
+        } else {
+            snmp_log(LOG_ERR,
+                "unknown column %d in _sessionTable_get_column\n", column);
+        }
+        break;
+    }
+
+    return rc;
+} /* _sessionTable_get_column */
+
+int
+_mfd_sessionTable_get_values(netsnmp_mib_handler *handler,
+                         netsnmp_handler_registration *reginfo,
+                         netsnmp_agent_request_info *agtreq_info,
+                         netsnmp_request_info *requests)
+{
+    sessionTable_rowreq_ctx *rowreq_ctx =
+                  netsnmp_container_table_row_extract(requests);
+    netsnmp_table_request_info * tri;
+    u_char                     * old_string;
+    void                      (*dataFreeHook)(void *);
+    int                        rc;
+
+    DEBUGMSGTL(("internal:sessionTable:_mfd_sessionTable_get_values","called\n"));
+
+    netsnmp_assert(NULL != rowreq_ctx);
+    
+    for(;requests; requests = requests->next) {
+        /*
+         * save old pointer, so we can free it if replaced
+         */
+        old_string = requests->requestvb->val.string;
+        dataFreeHook = requests->requestvb->dataFreeHook;
+        if(NULL == requests->requestvb->val.string) {
+            requests->requestvb->val.string = requests->requestvb->buf;
+            requests->requestvb->val_len = sizeof(requests->requestvb->buf);
+        }
+        else if(requests->requestvb->buf == requests->requestvb->val.string) {
+            if(requests->requestvb->val_len != sizeof(requests->requestvb->buf))
+                requests->requestvb->val_len = sizeof(requests->requestvb->buf);
+        }
+
+        /*
+         * get column data
+         */
+        tri = netsnmp_extract_table_info(requests);
+        if(NULL == tri)
+            continue;
+        
+        rc = _sessionTable_get_column(rowreq_ctx, requests->requestvb, tri->colnum);
+        if(rc) {
+            if(MFD_SKIP == rc) {
+                requests->requestvb->type = SNMP_NOSUCHINSTANCE;
+                rc = SNMP_ERR_NOERROR;
+            }
+        }
+        else if (NULL == requests->requestvb->val.string) {
+            snmp_log(LOG_ERR,"NULL varbind data pointer!\n");
+            rc = SNMP_ERR_GENERR;
+        }
+        if(rc)
+            netsnmp_request_set_error(requests, SNMP_VALIDATE_ERR(rc));
+
+        /*
+         * if the buffer wasn't used previously for the old data (i.e. it
+         * was allcoated memory)  and the get routine replaced the pointer,
+         * we need to free the previous pointer.
+         */
+        if(old_string && (old_string != requests->requestvb->buf) &&
+           (requests->requestvb->val.string != old_string)) {
+            if(dataFreeHook)
+                (*dataFreeHook)(old_string);
+            else
+                free(old_string);
+        }
+    } /* for results */
+
+    return SNMP_ERR_NOERROR;
+} /* _mfd_sessionTable_get_values */
+
+
+/***********************************************************************
+ *
+ * SET processing
+ *
+ ***********************************************************************/
+
+/*
+ * SET PROCESSING NOT APPLICABLE (per MIB or user setting)
+ */
+/***********************************************************************
+ *
+ * DATA ACCESS
+ *
+ ***********************************************************************/
+static void _container_free(netsnmp_container *container);
+
+/**
+ * @internal
+ */
+static int
+_cache_load(netsnmp_cache *cache, void *vmagic)
+{
+    DEBUGMSGTL(("internal:sessionTable:_cache_load","called\n"));
+
+    if((NULL == cache) || (NULL == cache->magic)) {
+        snmp_log(LOG_ERR, "invalid cache for sessionTable_cache_load\n");
+        return -1;
+    }
+
+    /** should only be called for an invalid or expired cache */
+    netsnmp_assert((0 == cache->valid) || (1 == cache->expired));
+    
+    /*
+     * call user code
+     */
+    return sessionTable_container_load((netsnmp_container*)cache->magic);
+} /* _cache_load */
+
+/**
+ * @internal
+ */
+static void
+_cache_free(netsnmp_cache *cache, void *magic)
+{
+    netsnmp_container *container;
+
+    DEBUGMSGTL(("internal:sessionTable:_cache_free","called\n"));
+
+    if((NULL == cache) || (NULL == cache->magic)) {
+        snmp_log(LOG_ERR, "invalid cache in sessionTable_cache_free\n");
+        return;
+    }
+
+    container = (netsnmp_container*)cache->magic;
+
+    _container_free(container);
+} /* _cache_free */
+
+/**
+ * @internal
+ */
+static void
+_container_item_free(sessionTable_rowreq_ctx *rowreq_ctx, void *context)
+{
+    DEBUGMSGTL(("internal:sessionTable:_container_item_free","called\n"));
+
+    if(NULL == rowreq_ctx)
+        return;
+
+    sessionTable_release_rowreq_ctx(rowreq_ctx);
+} /* _container_item_free */
+
+/**
+ * @internal
+ */
+static void
+_container_free(netsnmp_container *container)
+{
+    DEBUGMSGTL(("internal:sessionTable:_container_free","called\n"));
+
+    if (NULL == container) {
+        snmp_log(LOG_ERR, "invalid container in sessionTable_container_free\n");
+        return;
+    }
+
+    /*
+     * call user code
+     */
+    sessionTable_container_free(container);
+    
+    /*
+     * free all items. inefficient, but easy.
+     */
+    CONTAINER_CLEAR(container,
+                    (netsnmp_container_obj_func *)_container_item_free,
+                    NULL);
+} /* _container_free */
+
+/**
+ * @internal
+ * initialize the container with functions or wrappers
+ */
+void
+_sessionTable_container_init(sessionTable_interface_ctx *if_ctx)
+{
+    DEBUGMSGTL(("internal:sessionTable:_sessionTable_container_init","called\n"));
+
+    /*
+     * cache init
+     */
+    if_ctx->cache = netsnmp_cache_create(30, /* timeout in seconds */
+                                         _cache_load, _cache_free,
+                                         sessionTable_oid,
+                                         sessionTable_oid_size);
+
+    if(NULL == if_ctx->cache) {
+        snmp_log(LOG_ERR, "error creating cache for sessionTable\n");
+        return;
+    }
+
+    if_ctx->cache->flags = NETSNMP_CACHE_DONT_INVALIDATE_ON_SET;
+
+    sessionTable_container_init(&if_ctx->container, if_ctx->cache);
+    if(NULL == if_ctx->container)
+        if_ctx->container = netsnmp_container_find("sessionTable:table_container");
+    if(NULL == if_ctx->container) {
+        snmp_log(LOG_ERR,"error creating container in "
+                 "sessionTable_container_init\n");
+        return;
+    }
+
+    if (NULL != if_ctx->cache)
+        if_ctx->cache->magic = (void*)if_ctx->container;
+} /* _sessionTable_container_init */
+
+/**
+ * @internal
+ * shutdown the container with functions or wrappers
+ */
+void
+_sessionTable_container_shutdown(sessionTable_interface_ctx *if_ctx)
+{
+    DEBUGMSGTL(("internal:sessionTable:_sessionTable_container_shutdown","called\n"));
+
+    sessionTable_container_shutdown(if_ctx->container);
+
+    _container_free(if_ctx->container);
+
+} /* _sessionTable_container_shutdown */
+
+
+sessionTable_rowreq_ctx *
+sessionTable_row_find_by_mib_index(sessionTable_mib_index *mib_idx)
+{
+    sessionTable_rowreq_ctx   *rowreq_ctx;
+    oid                      oid_tmp[MAX_OID_LEN];
+    netsnmp_index            oid_idx;
+    int                      rc;
+
+    /*
+     * set up storage for OID
+     */
+    oid_idx.oids = oid_tmp;
+    oid_idx.len = sizeof(oid_tmp)/sizeof(oid);
+
+    /*
+     * convert
+     */
+    rc = sessionTable_index_to_oid(&oid_idx, mib_idx);
+    if (MFD_SUCCESS != rc)
+        return NULL;
+
+    rowreq_ctx = CONTAINER_FIND(sessionTable_if_ctx.container, &oid_idx);
+
+    return rowreq_ctx;
+}
+