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+/* -*-C++-*- */
+#ifndef ASN1
+#define ASN1
+//=============================================================================
+/**
+ * @file asn1.h
+ *
+ * $Id$
+ *
+ * Abstract Syntax Notation One, ASN.1
+ * As defined in ISO/IS 8824 and ISO/IS 8825
+ * This implements a subset of the above International Standards that
+ * is sufficient to implement SNMP.
+ *
+ *
+ * @author Steve Waldbusser/CMU ?
+ */
+//=============================================================================
+
+
+/**********************************************************************
+ Copyright 1988, 1989, 1991, 1992 by Carnegie Mellon University
+
+ All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in
+supporting documentation, and that the name of CMU not be
+used in advertising or publicity pertaining to distribution of the
+software without specific, written prior permission.
+
+CMU DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+CMU BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
+ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+SOFTWARE.
+******************************************************************/
+
+#include "ace/config-all.h"
+
+#if !defined (ACE_LACKS_PRAGMA_ONCE)
+# pragma once
+#endif /* ACE_LACKS_PRAGMA_ONCE */
+
+#include "asnmp/snmp.h"
+
+// CMU code to define "oid" typedef (old C style)
+#ifndef EIGHTBIT_SUBIDS
+typedef unsigned long oid;
+#define MAX_SUBID 0xFFFFFFFF
+#else
+typedef unsigned char oid;
+#define MAX_SUBID 0xFF
+#endif
+
+#define MAX_OID_LEN 64 /* max subid's in an oid */
+
+
+// asn.1 values
+#define ASN_BOOLEAN (0x01)
+#define ASN_INTEGER (0x02)
+#define ASN_BIT_STR (0x03)
+#define ASN_OCTET_STR (0x04)
+#define ASN_NULL (0x05)
+#define ASN_OBJECT_ID (0x06)
+#define ASN_SEQUENCE (0x10)
+#define ASN_SET (0x11)
+#define ASN_UNIVERSAL (0x00)
+#define ASN_APPLICATION (0x40)
+#define ASN_CONTEXT (0x80)
+#define ASN_PRIVATE (0xC0)
+#define ASN_PRIMITIVE (0x00)
+#define ASN_CONSTRUCTOR (0x20)
+#define ASN_LONG_LEN (0x80)
+#define ASN_EXTENSION_ID (0x1F)
+#define ASN_BIT8 (0x80)
+
+#define IS_CONSTRUCTOR(byte) ((byte) & ASN_CONSTRUCTOR)
+#define IS_EXTENSION_ID(byte) (((byte) & ASN_EXTENSION_ID) == ASN_EXTENSION_ID)
+
+#define ASNERROR( string)
+#define MAX_NAME_LEN 64
+#define SNMP_VERSION_1 0
+#define SNMP_VERSION_2C 1
+
+
+// defined types (from the SMI, RFC 1065)
+#define SMI_IPADDRESS (ASN_APPLICATION | 0)
+#define SMI_COUNTER (ASN_APPLICATION | 1)
+#define SMI_GAUGE (ASN_APPLICATION | 2)
+#define SMI_TIMETICKS (ASN_APPLICATION | 3)
+#define SMI_OPAQUE (ASN_APPLICATION | 4)
+#define SMI_NSAP (ASN_APPLICATION | 5)
+#define SMI_COUNTER64 (ASN_APPLICATION | 6)
+#define SMI_UINTEGER (ASN_APPLICATION | 7)
+
+#define GET_REQ_MSG (ASN_CONTEXT | ASN_CONSTRUCTOR | 0x0)
+#define GETNEXT_REQ_MSG (ASN_CONTEXT | ASN_CONSTRUCTOR | 0x1)
+#define GET_RSP_MSG (ASN_CONTEXT | ASN_CONSTRUCTOR | 0x2)
+#define SET_REQ_MSG (ASN_CONTEXT | ASN_CONSTRUCTOR | 0x3)
+#define TRP_REQ_MSG (ASN_CONTEXT | ASN_CONSTRUCTOR | 0x4)
+
+#define GETBULK_REQ_MSG (ASN_CONTEXT | ASN_CONSTRUCTOR | 0x5)
+#define INFORM_REQ_MSG (ASN_CONTEXT | ASN_CONSTRUCTOR | 0x6)
+#define TRP2_REQ_MSG (ASN_CONTEXT | ASN_CONSTRUCTOR | 0x7)
+#define REPORT_MSG (ASN_CONTEXT | ASN_CONSTRUCTOR | 0x8)
+
+#define SNMP_NOSUCHOBJECT (ASN_CONTEXT | ASN_PRIMITIVE | 0x0)
+#define SNMP_NOSUCHINSTANCE (ASN_CONTEXT | ASN_PRIMITIVE | 0x1)
+#define SNMP_ENDOFMIBVIEW (ASN_CONTEXT | ASN_PRIMITIVE | 0x2)
+
+#define SNMP_MSG_LENGTH 1500
+
+typedef struct sockaddr_in ipaddr;
+
+// pdu
+struct snmp_pdu {
+ int command; // pdu type
+ unsigned long reqid; // Request id
+ unsigned long errstat; // Error status
+ unsigned long errindex; // Error index
+
+ // Trap information
+ oid *enterprise; // System OID
+ int enterprise_length;
+ ipaddr agent_addr; // address of object generating trap
+ int trap_type; // trap type
+ int specific_type; // specific type
+ unsigned long time; // Uptime
+
+ // vb list
+ struct variable_list *variables;
+};
+
+// vb list
+struct variable_list {
+ struct variable_list *next_variable; // 0 for last variable
+ oid *name; // Object identifier of variable
+ int name_length; // number of subid's in name
+ unsigned char type; // ASN type of variable
+ union { // value of variable
+ long *integer;
+ unsigned char *string;
+ oid *objid;
+ unsigned char *bitstring;
+ struct counter64 *counter64;
+ } val;
+ int val_len;
+};
+
+struct counter64 {
+ unsigned long high;
+ unsigned long low;
+};
+
+// CMU Interface class for ASN.1 routines
+/**
+ * @class asn1
+ *
+ * @brief Defines the member functions for the asn1 concrete interface class
+ * CMU routines for performing ASN.1 data marshalling / representation
+ */
+class ASNMP_Export asn1
+
+{
+public:
+static unsigned char *parse_int( unsigned char *data,
+ int *datalength,
+ unsigned char *type,
+ long int *intp,
+ int intsize);
+static unsigned char *parse_unsigned_int( unsigned char *data,
+ int *datalength,
+ unsigned char *type,
+ unsigned long *intp,
+ int intsize);
+static unsigned char *build_int( unsigned char *data,
+ int *datalength,
+ unsigned char type,
+ long *intp,
+ int intsize);
+
+static unsigned char *build_unsigned_int( unsigned char *data,
+ int *datalength,
+ unsigned char type,
+ unsigned long *intp,
+ int intsize);
+
+static unsigned char *parse_string( unsigned char *data,
+ int *datalength,
+ unsigned char *type,
+ unsigned char *string,
+ int *strlength);
+
+static unsigned char *build_string( unsigned char *data,
+ int *datalength,
+ unsigned char type,
+ unsigned char *string,
+ int strlength);
+
+static unsigned char *parse_header( unsigned char *data,
+ int *datalength,
+ unsigned char *type);
+
+static unsigned char * build_header( unsigned char *data,
+ int *datalength,
+ unsigned char type,
+ int length);
+
+static unsigned char * build_sequence( unsigned char *data,
+ int *datalength,
+ unsigned char type,
+ int length);
+
+static unsigned char * parse_length( unsigned char *data,
+ unsigned long *length);
+
+static unsigned char *build_length( unsigned char *data,
+ int *datalength,
+ int length);
+
+static unsigned char *build_objid( unsigned char *data,
+ int *datalength,
+ unsigned char type,
+ oid *objid,
+ int objidlength);
+
+static unsigned char *parse_objid( unsigned char *data,
+ int *datalength,
+ unsigned char *type,
+ oid *objid,
+ int *objidlength);
+
+static unsigned char *parse_null(unsigned char *data,
+ int *datalength, unsigned
+ char *type);
+
+static unsigned char *build_null( unsigned char *data,
+ int *datalength,
+ unsigned char type);
+
+static unsigned char *parse_bitstring( unsigned char *data,
+ int *datalength,
+ unsigned char *type,
+ unsigned char *string,
+ int *strlength);
+
+static unsigned char *build_bitstring( unsigned char *data,
+ int *datalength,
+ unsigned char type,
+ unsigned char *string,
+ int strlength);
+
+static unsigned char * parse_unsigned_int64(unsigned char *data,
+ int *datalength,
+ unsigned char *type,
+ struct counter64 *cp,
+ int countersize);
+
+static unsigned char * build_unsigned_int64( unsigned char *data,
+ int *datalength,
+ unsigned char type,
+ struct counter64 *cp,
+ int countersize);
+
+};
+
+
+// CMU Interface class for SNMPv1, SNMPv2c routines
+/**
+ * @class cmu_snmp
+ *
+ * @brief Defines the static functions for the cmu_snmp concrete class.
+ * These routine create cmu pdu's that can be sent/received on/from agents
+ */
+class ASNMP_Export cmu_snmp
+{
+ public:
+ static struct snmp_pdu *pdu_create( int command);
+ static void free_pdu( struct snmp_pdu *pdu);
+ static int build( struct snmp_pdu *pdu,
+ unsigned char *packet,
+ int *out_length,
+ long version,
+ unsigned char* community,
+ int community_len);
+
+ static void add_var(struct snmp_pdu *pdu,
+ oid *name,
+ int name_length,
+ SmiVALUE *smival);
+
+ static int parse( struct snmp_pdu *pdu,
+ unsigned char *data,
+ unsigned char *community_name,
+ unsigned long &community_len,
+ snmp_version &version,
+ int length);
+ static unsigned char *auth_build( unsigned char *data,
+ int *length,
+ long int version,
+ unsigned char *community,
+ int community_len,
+ int messagelen);
+
+ static unsigned char *build_var_op(unsigned char *data,
+ oid * var_name,
+ int *var_name_len,
+ unsigned char var_val_type,
+ int var_val_len,
+ unsigned char *var_val,
+ int *listlength);
+
+
+static unsigned char *auth_parse(unsigned char *data,
+ int *length,
+ unsigned char *sid,
+ int *slen,
+ long *version);
+
+/*
+ @params data, IN - pointer to the start of object
+ var_name OUT - object id of variable
+ var_name_len IN/OUT - length of variable name
+ var_val_type OUT - type of variable (int or octet string) (one byte)
+ var_val_len OUT - length of variable
+ var_val, OUT - pointer to ASN1 encoded value of variable
+ listlength IN/OUT - number of valid bytes left in var_op_list
+*/
+static unsigned char *parse_var_op( unsigned char *data,
+ oid *var_name,
+ int *var_name_len,
+ unsigned char *var_val_type,
+ int *var_val_len,
+ unsigned char **var_val,
+ int *listlength);
+
+};
+
+#endif // ASN1
+
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