diff options
Diffstat (limited to 'agent/mibgroup/smux/snmp_rip2.c')
| -rw-r--r-- | agent/mibgroup/smux/snmp_rip2.c | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/agent/mibgroup/smux/snmp_rip2.c b/agent/mibgroup/smux/snmp_rip2.c new file mode 100644 index 0000000..b987a09 --- /dev/null +++ b/agent/mibgroup/smux/snmp_rip2.c @@ -0,0 +1,206 @@ +/* + * $Id$ + */ + +/* + * Smux module authored by Rohit Dube. + */ + +#include <net-snmp/net-snmp-config.h> + +#include <stdio.h> +#if HAVE_STDLIB_H +#include <stdlib.h> +#endif +#if HAVE_STRING_H +#include <string.h> +#else +#include <strings.h> +#endif +#if HAVE_UNISTD_H +#include <unistd.h> +#endif +#if HAVE_ERR_H +#include <err.h> +#endif +#if TIME_WITH_SYS_TIME +# include <sys/time.h> +# include <time.h> +#else +# if HAVE_SYS_TIME_H +# include <sys/time.h> +# else +# include <time.h> +# endif +#endif +#include <errno.h> +#include <netdb.h> + +#include <sys/stat.h> +#include <sys/socket.h> +#if HAVE_SYS_FILIO_H +#include <sys/filio.h> +#endif + +#if HAVE_NETINET_IN_H +#include <netinet/in.h> +#endif + +#include <net-snmp/net-snmp-includes.h> +#include <net-snmp/agent/net-snmp-agent-includes.h> +#include "smux.h" +#include "snmp_rip2.h" + +static oid max_rip_mib[] = + { 1, 3, 6, 1, 2, 1, 23, 3, 1, 9, 255, 255, 255, 255 }; +static oid min_rip_mib[] = { 1, 3, 6, 1, 2, 1, 23, 1, 1, 0 }; +extern u_char smux_type; + +struct variable13 rip2_variables[] = { + {RIP2GLOBALROUTECHANGES, ASN_COUNTER, NETSNMP_OLDAPI_RONLY, + var_rip2, 2, {1, 1}}, + {RIP2GLOBALQUERIES, ASN_COUNTER, NETSNMP_OLDAPI_RONLY, + var_rip2, 2, {1, 2}}, + {RIP2IFSTATADDRESS, ASN_IPADDRESS, NETSNMP_OLDAPI_RONLY, + var_rip2, 3, {2, 1, 1}}, + {RIP2IFSTATRCVBADPKTS, ASN_COUNTER, NETSNMP_OLDAPI_RONLY, + var_rip2, 3, {2, 1, 2}}, + {RIP2IFSTATRCVBADROUTES, ASN_COUNTER, NETSNMP_OLDAPI_RONLY, + var_rip2, 3, {2, 1, 3}}, + {RIP2IFSTATSENTUPDATES, ASN_COUNTER, NETSNMP_OLDAPI_RONLY, + var_rip2, 3, {2, 1, 4}}, + {RIP2IFSTATSTATUS, ASN_INTEGER, NETSNMP_OLDAPI_RWRITE, + var_rip2, 3, {2, 1, 5}}, + {RIP2IFCONFADDRESS, ASN_IPADDRESS, NETSNMP_OLDAPI_RONLY, + var_rip2, 3, {3, 1, 1}}, + {RIP2IFCONFDOMAIN, ASN_OCTET_STR, NETSNMP_OLDAPI_RWRITE, + var_rip2, 3, {3, 1, 2}}, + {RIP2IFCONFAUTHTYPE, ASN_INTEGER, NETSNMP_OLDAPI_RWRITE, + var_rip2, 3, {3, 1, 3}}, + {RIP2IFCONFAUTHKEY, ASN_OCTET_STR, NETSNMP_OLDAPI_RWRITE, + var_rip2, 3, {3, 1, 4}}, + {RIP2IFCONFSEND, ASN_INTEGER, NETSNMP_OLDAPI_RWRITE, + var_rip2, 3, {3, 1, 5}}, + {RIP2IFCONFRECEIVE, ASN_INTEGER, NETSNMP_OLDAPI_RWRITE, + var_rip2, 3, {3, 1, 6}}, + {RIP2IFCONFDEFAULTMETRIC, ASN_INTEGER, NETSNMP_OLDAPI_RWRITE, + var_rip2, 3, {3, 1, 7}}, + {RIP2IFCONFSTATUS, ASN_INTEGER, NETSNMP_OLDAPI_RWRITE, + var_rip2, 3, {3, 1, 8}}, + {RIP2IFCONFSRCADDRESS, ASN_IPADDRESS, NETSNMP_OLDAPI_RWRITE, + var_rip2, 3, {3, 1, 9}}, + {RIP2PEERADDRESS, ASN_IPADDRESS, NETSNMP_OLDAPI_RONLY, + var_rip2, 3, {4, 1, 1}}, + {RIP2PEERDOMAIN, ASN_OCTET_STR, NETSNMP_OLDAPI_RONLY, + var_rip2, 3, {4, 1, 2}}, + {RIP2PEERLASTUPDATE, ASN_TIMETICKS, NETSNMP_OLDAPI_RONLY, + var_rip2, 3, {4, 1, 3}}, + {RIP2PEERVERSION, ASN_INTEGER, NETSNMP_OLDAPI_RONLY, + var_rip2, 3, {4, 1, 4}}, + {RIP2PEERRCVBADPKTS, ASN_COUNTER, NETSNMP_OLDAPI_RONLY, + var_rip2, 3, {4, 1, 5}}, + {RIP2PEERRCVBADROUTES, ASN_COUNTER, NETSNMP_OLDAPI_RONLY, + var_rip2, 3, {4, 1, 6}} +}; + +oid rip2_variables_oid[] = { NETSNMP_MIB2_OID, 23 }; + +void +init_snmp_rip2(void) +{ + REGISTER_MIB("smux/snmp_rip2", rip2_variables, variable13, + rip2_variables_oid); +} + +u_char * +var_rip2(struct variable *vp, + oid * name, + int *length, int exact, int *var_len, WriteMethod ** write_method) +{ + u_char *var; + int result; + + DEBUGMSGTL(("smux/snmp_rip2", + "[var_rip2] var len %d, oid requested Len %d-", *var_len, + *length)); + DEBUGMSGOID(("smux/snmp_rip2", name, *length)); + DEBUGMSG(("smux/snmp_rip2", "\n")); + + /* + * Pass on the request to Gated. + * If the request sent out was a get next, check to see if + * it lies in the rip2 range. If it doesn't, return NULL. + * In either case, make sure that errors are checked on the + * returned packets. + */ + + /* + * No writes for now + */ + *write_method = NULL; + + /* + * Donot allow access to the peer stuff as it crashes gated. + * However A GetNext on the last 23.3.1.9 variable will force gated into + * the peer stuff and cause it to crash. + * The only way to fix this is to either solve the Gated problem, or + * remove the peer variables from Gated itself and cause it to return + * NULL at the crossing. Currently doing the later. + */ + + /* + * Reject GET and GETNEXT for anything above rip2ifconf range + */ + result = snmp_oid_compare(name, *length, max_rip_mib, + sizeof(max_rip_mib) / sizeof(u_int)); + + if (result >= 0) { + DEBUGMSGTL(("smux/snmp_rip2", "Over shot\n")); + return NULL; + } + + /* + * for GETs we need to be in the rip2 range so reject anything below + */ + result = snmp_oid_compare(name, *length, min_rip_mib, + sizeof(min_rip_mib) / sizeof(u_int)); + if (exact && (result < 0)) { + DEBUGMSGTL(("smux/snmp_rip2", + "Exact but doesn't match length %d, size %d\n", + *length, sizeof(min_rip_mib))); + return NULL; + } + + /* + * On return, 'var' points to the value returned which is of length + * '*var_len'. 'name' points to the new (same as the one passed in for + * GETs) oid which has 'length' suboids. + * 'smux_type' contains the type of the variable. + */ + var = smux_snmp_process(exact, name, length, var_len); + + DEBUGMSGTL(("smux/snmp_rip2", + "[var_rip2] var len %d, oid obtained Len %d-", *var_len, + *length)); + DEBUGMSGOID(("smux/snmp_rip2", name, *length)); + DEBUGMSG(("smux/snmp_rip2", "\n")); + + vp->type = smux_type; + + /* + * XXX Need a mechanism to return errors in gated's responses + */ + + if (var == NULL) + return NULL; + + /* + * Any resullt returned should be within the rip2 tree. + * rip_mib - static u_int rip_mib[] = {1, 3, 6, 1, 2, 1, 23}; + */ + if (memcmp(rip_mib, name, sizeof(rip_mib)) != 0) { + return NULL; + } else { + return var; + } +} |