/* snmpEngine.c: implement's the SNMP-FRAMEWORK-MIB. */#include <config.h>#if HAVE_WINSOCK_H#include <winsock.h>#endif#include "mibincl.h"#include "snmpv3.h"#include "util_funcs.h"#include "lcd_time.h"#include "../mibII/sysORTable.h"#include "snmpEngine.h"struct variable2 snmpEngine_variables[] = {  { SNMPENGINEID        , ASN_OCTET_STR  , RONLY , var_snmpEngine, 1, { 1 } },#ifdef SNMP_TESTING_CODE   { SNMPENGINEBOOTS     , ASN_INTEGER    , RWRITE, var_snmpEngine, 1, { 2 } },  { SNMPENGINETIME      , ASN_INTEGER    , RWRITE, var_snmpEngine, 1, { 3 } },#else /* !SNMP_TESTING_CODE */   { SNMPENGINEBOOTS     , ASN_INTEGER    , RONLY , var_snmpEngine, 1, { 2 } },  { SNMPENGINETIME      , ASN_INTEGER    , RONLY , var_snmpEngine, 1, { 3 } },#endif /* SNMP_TESTING_CODE */  { SNMPENGINEMAXMESSAGESIZE, ASN_INTEGER, RONLY , var_snmpEngine, 1, { 4 } },};/* now load this mib into the agents mib table */oid snmpEngine_variables_oid[] = {1,3,6,1,6,3,10,2,1};void init_snmpEngine (void) {#ifdef USING_MIBII_SYSORTABLE_MODULE  static oid reg[] = {1,3,6,1,6,3,10,3,1,1};  register_sysORTable(reg,10,"The SNMP Management Architecture MIB.");#endif  REGISTER_MIB("snmpv3/snmpEngine", snmpEngine_variables, variable2,		 snmpEngine_variables_oid);/* place any initialization routines needed here */}extern struct timeval starttime;#ifdef SNMP_TESTING_CODEint write_engineBoots(int, u_char *,u_char, size_t, u_char *,oid*, size_t);int write_engineTime(int, u_char *,u_char, size_t, u_char *,oid*, size_t);#endif /* SNMP_TESTING_CODE */u_char *var_snmpEngine(    struct variable *vp,    oid     *name,    size_t  *length,    int     exact,    size_t  *var_len,    WriteMethod **write_method){  /* variables we may use later */  static long long_ret;  static unsigned char engineID[SNMP_MAXBUF];  *write_method = 0;           /* assume it isnt writable for the time being */  *var_len = sizeof(long_ret); /* assume an integer and change later if not */  if (header_generic(vp,name,length,exact,var_len,write_method))      return 0;  /* this is where we do the value assignments for the mib results. */  switch(vp->magic) {    case SNMPENGINEID:      *var_len = snmpv3_get_engineID(engineID, SNMP_MAXBUF);      /* XXX  Set ERROR_MSG() upon error? */      return (unsigned char *) engineID;    case SNMPENGINEBOOTS:#ifdef SNMP_TESTING_CODE      *write_method = write_engineBoots;#endif /* SNMP_TESTING_CODE */      long_ret = snmpv3_local_snmpEngineBoots();      return (unsigned char *) &long_ret;    case SNMPENGINETIME:#ifdef SNMP_TESTING_CODE      *write_method = write_engineTime;#endif /* SNMP_TESTING_CODE */      long_ret = snmpv3_local_snmpEngineTime();      return (unsigned char *) &long_ret;    case SNMPENGINEMAXMESSAGESIZE:      long_ret = 1500;      return (unsigned char *) &long_ret;    default:      DEBUGMSGTL(("snmpd", "unknown sub-id %d in var_snmpEngine\n", vp->magic));  }  return 0;}#ifdef SNMP_TESTING_CODE/* write_engineBoots():   This is technically not writable a writable mib object, but we   allow it so we can run some time synchronization tests.*/intwrite_engineBoots(   int      action,   u_char   *var_val,   u_char   var_val_type,   size_t   var_val_len,   u_char   *statP,   oid      *name,   size_t   name_len){  /* variables we may use later */  static long long_ret;  size_t size;  int bigsize=SNMP_MAXBUF_MEDIUM;  u_char engineIDBuf[SNMP_MAXBUF_MEDIUM];  int engineIDBufLen = 0;  if (var_val_type != ASN_INTEGER){      DEBUGMSGTL(("snmpEngine","write to engineBoots not ASN_INTEGER\n"));      return SNMP_ERR_WRONGTYPE;  }  if (var_val_len > sizeof(long_ret)){      DEBUGMSGTL(("snmpEngine","write to engineBoots: bad length\n"));      return SNMP_ERR_WRONGLENGTH;  }  long_ret = *((long *) var_val);  if (action == COMMIT) {    engineIDBufLen = snmpv3_get_engineID(engineIDBuf, SNMP_MAXBUF_MEDIUM);    /* set our local engineTime in the LCD timing cache */    snmpv3_set_engineBootsAndTime(long_ret, snmpv3_local_snmpEngineTime());    set_enginetime(engineIDBuf, engineIDBufLen,                    snmpv3_local_snmpEngineBoots(),                    snmpv3_local_snmpEngineTime(),                   TRUE);  }  return SNMP_ERR_NOERROR;}/* write_engineTime():   This is technically not writable a writable mib object, but we   allow it so we can run some time synchronization tests.*/intwrite_engineTime(   int      action,   u_char   *var_val,   u_char   var_val_type,   size_t   var_val_len,   u_char   *statP,   oid      *name,   size_t   name_len){  /* variables we may use later */  static long long_ret;  size_t size;  int bigsize=SNMP_MAXBUF_MEDIUM;  u_char engineIDBuf[SNMP_MAXBUF_MEDIUM];  int engineIDBufLen = 0;  if (var_val_type != ASN_INTEGER){      DEBUGMSGTL(("snmpEngine","write to engineTime not ASN_INTEGER\n"));      return SNMP_ERR_WRONGTYPE;  }  if (var_val_len > sizeof(long_ret)){      DEBUGMSGTL(("snmpEngine","write to engineTime: bad length\n"));      return SNMP_ERR_WRONGLENGTH;  }  long_ret = *((long *) var_val);  if (action == COMMIT) {    engineIDBufLen = snmpv3_get_engineID(engineIDBuf, SNMP_MAXBUF_MEDIUM);    /* set our local engineTime in the LCD timing cache */    snmpv3_set_engineBootsAndTime(snmpv3_local_snmpEngineBoots(), long_ret);    set_enginetime(engineIDBuf, engineIDBufLen,                    snmpv3_local_snmpEngineBoots(),                    snmpv3_local_snmpEngineTime(),                   TRUE);  }  return SNMP_ERR_NOERROR;}#endif /* SNMP_TESTING_CODE */