--- /dev/null
+/*
+ * $Id: snmp_bgp.c,v 5.0 2002/04/20 07:30:06 hardaker Exp $
+ */
+
+/*
+ * 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_bgp.h"
+
+struct variable13 bgp_variables[] = {
+ {BGPVERSION, ASN_OCTET_STR, RONLY, var_bgp, 1, {1}},
+ {BGPLOCALAS, ASN_INTEGER, RONLY, var_bgp, 1, {2}},
+ {BGPIDENTIFIER, ASN_IPADDRESS, RONLY, var_bgp, 1, {4}},
+ {BGPPEERIDENTIFIER, ASN_IPADDRESS, RONLY, var_bgp, 3, {3, 1, 1}},
+ {BGPPEERSTATE, ASN_INTEGER, RONLY, var_bgp, 3, {3, 1, 2}},
+ {BGPPEERADMINSTATUS, ASN_INTEGER, RONLY, var_bgp, 3, {3, 1, 3}},
+ {BGPPEERNEGOTIATEDVERSION, ASN_INTEGER, RONLY, var_bgp, 3, {3, 1, 4}},
+ {BGPPEERLOCALADDR, ASN_IPADDRESS, RONLY, var_bgp, 3, {3, 1, 5}},
+ {BGPPEERLOCALPORT, ASN_INTEGER, RONLY, var_bgp, 3, {3, 1, 6}},
+ {BGPPEERREMOTEADDR, ASN_IPADDRESS, RONLY, var_bgp, 3, {3, 1, 7}},
+ {BGPPEERREMOTEPORT, ASN_INTEGER, RONLY, var_bgp, 3, {3, 1, 8}},
+ {BGPPEERREMOTEAS, ASN_INTEGER, RONLY, var_bgp, 3, {3, 1, 9}},
+ {BGPPEERINUPDATES, ASN_COUNTER, RONLY, var_bgp, 3, {3, 1, 10}},
+ {BGPPEEROUTUPDATES, ASN_COUNTER, RONLY, var_bgp, 3, {3, 1, 11}},
+ {BGPPEERINTOTALMESSAGES, ASN_COUNTER, RONLY, var_bgp, 3, {3, 1, 12}},
+ {BGPPEEROUTTOTALMESSAGES, ASN_COUNTER, RONLY, var_bgp, 3, {3, 1, 13}},
+ {BGPPEERLASTERROR, ASN_OCTET_STR, RONLY, var_bgp, 3, {3, 1, 14}},
+ {BGPPATHATTRPEER, ASN_IPADDRESS, RONLY, var_bgp, 3, {5, 1, 1}},
+ {BGPPATHATTRDESTNETWORK, ASN_IPADDRESS, RONLY, var_bgp, 3, {5, 1, 2}},
+ {BGPPATHATTRORIGIN, ASN_INTEGER, RONLY, var_bgp, 3, {5, 1, 3}},
+ {BGPPATHATTRASPATH, ASN_OCTET_STR, RONLY, var_bgp, 3, {5, 1, 4}},
+ {BGPPATHATTRNEXTHOP, ASN_INTEGER, RONLY, var_bgp, 3, {5, 1, 5}},
+ {BGPPATHATTRINTERASMETRIC, ASN_OCTET_STR, RONLY, var_bgp, 3, {5, 1, 6}}
+};
+
+oid bgp_variables_oid[] = { MIB, 15 };
+
+void
+init_snmp_bdp(void)
+{
+ REGISTER_MIB("smux/snmp_bgp", bgp_variables, variable13,
+ bgp_variables_oid);
+}
+
+
+#endif
+static oid max_bgp_mib[] =
+ { 1, 3, 6, 1, 2, 1, 15, 5, 1, 6, 255, 255, 255, 255 };
+static oid min_bgp_mib[] = { 1, 3, 6, 1, 2, 1, 15, 1, 0 };
+extern u_char smux_type;
+
+u_char *
+var_bgp(struct variable *vp,
+ oid * name,
+ int *length, int exact, int *var_len, WriteMethod ** write_method)
+{
+ u_char *var;
+ int result;
+
+ DEBUGMSGTL(("smux/snmp_bgp",
+ "[var_bgp] var len %d, oid requested Len %d-", *var_len,
+ *length));
+ DEBUGMSGOID(("smux/snmp_bgp", name, *length));
+ DEBUGMSG(("smux/snmp_bgp", "\n"));
+
+ /*
+ * Pass on the request to Gated.
+ * If the request sent out was a get next, check to see if
+ * it lies in the bgp 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 bgpifconf range
+ */
+ result = snmp_oid_compare(name, *length, max_bgp_mib,
+ sizeof(max_bgp_mib) / sizeof(u_int));
+
+ if (result >= 0) {
+ DEBUGMSGTL(("smux/snmp_bgp", "Over shot\n"));
+ return NULL;
+ }
+
+ /*
+ * for GETs we need to be in the bgp range so reject anything below
+ */
+ result = snmp_oid_compare(name, *length, min_bgp_mib,
+ sizeof(min_bgp_mib) / sizeof(u_int));
+ if (exact && (result < 0)) {
+ DEBUGMSGTL(("smux/snmp_bgp",
+ "Exact but doesn't match length %d, size %d\n",
+ *length, sizeof(min_bgp_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_bgp",
+ "[var_bgp] var len %d, oid obtained Len %d-", *var_len,
+ *length));
+ DEBUGMSGOID(("smux/snmp_bgp", name, *length));
+ DEBUGMSG(("smux/snmp_bgp", "\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 bgp tree.
+ * bgp_mib - static u_int bgp_mib[] = {1, 3, 6, 1, 2, 1, 15};
+ */
+ if (memcmp(bgp_mib, name, sizeof(bgp_mib)) != 0) {
+ return NULL;
+ } else {
+ return var;
+ }
+}
projects / bcm963xx.git / blobdiff