src/snmp_core.h

   1 /*
   2  * Copyright (C) 1996-2018 The Squid Software Foundation and contributors
   3  *
   4  * Squid software is distributed under GPLv2+ license and includes
   5  * contributions from numerous individuals and organizations.
   6  * Please see the COPYING and CONTRIBUTORS files for details.
   7  */
   8
   9 /* DEBUG: section 49    SNMP Interface */
  10
  11 #ifndef SQUID_SNMP_CORE_H
  12 #define SQUID_SNMP_CORE_H
  13
  14 #include "acl/Strategy.h"
  15 #include "cache_snmp.h"
  16 #include "comm/forward.h"
  17 #include "ip/forward.h"
  18
  19 class MemBuf;
  20
  21 #define SNMP_REQUEST_SIZE 4096
  22 #define MAX_PROTOSTAT 5
  23
  24 typedef variable_list *(oid_ParseFn) (variable_list *, snint *);
  25 typedef struct _mib_tree_entry mib_tree_entry;
  26 typedef oid *(instance_Fn) (oid * name, snint * len, mib_tree_entry * current, oid_ParseFn ** Fn);
  27 typedef enum {atNone = 0, atSum, atAverage, atMax, atMin} AggrType;
  28
  29 struct _mib_tree_entry {
  30     oid *name;
  31     int len;
  32     oid_ParseFn *parsefunction;
  33     instance_Fn *instancefunction;
  34     int children;
  35
  36     struct _mib_tree_entry **leaves;
  37
  38     struct _mib_tree_entry *parent;
  39     AggrType aggrType;
  40 };
  41
  42 struct snmp_pdu* snmpAgentResponse(struct snmp_pdu* PDU);
  43 AggrType snmpAggrType(oid* Current, snint CurrentLen);
  44
  45 extern Comm::ConnectionPointer snmpOutgoingConn;
  46
  47 extern PF snmpHandleUdp;
  48 void snmpInit(void);
  49 void snmpOpenPorts(void);
  50 void snmpClosePorts(void);
  51 const char * snmpDebugOid(oid * Name, snint Len, MemBuf &outbuf);
  52 void addr2oid(Ip::Address &addr, oid *Dest);
  53 void oid2addr(oid *Dest, Ip::Address &addr, u_int code);
  54
  55 class ACLSNMPCommunityStrategy: public ACLStrategy<char const *>
  56 {
  57 public:
  58     virtual int match (ACLData<MatchType> *&data, ACLFilledChecklist *checklist) override;
  59 };
  60
  61 #endif /* SQUID_SNMP_CORE_H */
  62