Commit: 5 - bmpStation (svn)

bmpStation is server of BGP monitoring protocol.

Commit MetaInfo

• Revision: 5 (tree)
• Zeit: 2015-01-18 14:02:58
• Autor: yuki0220

Log Message

making

Ändern Zusammenfassung

• modified: trunk/libbgp/bgp.h
• modified: trunk/libbgp/getBGPmessages.c

Diff

--- trunk/libbgp/bgp.h	(revision 4)
+++ trunk/libbgp/bgp.h	(revision 5)
@@ -85,6 +85,15 @@
  *| BGP Info                                                                 |**
  *+==========================================================================+*/
 /*******************************************************************************
+ * Union: AS Number area ********************************************************/
+#ifndef UNION_AS_PathArea
+#  define UNION_AS_PathArea
+union AS_PathArea {
+  u_int16_t AS2;
+  u_int32_t AS4;
+};
+#endif
+/*******************************************************************************
  * Union: address area ********************************************************/
 #ifndef UNION_ADDRAREA
 #  define UNION_ADDRAREA
@@ -117,6 +126,19 @@
 
   /*****************************************************************************
    * pathAttribute ************************************************************/
+  /* type: 1, Origin */
+  u_int8_t        PAOrigin;
+  /* type: 2, AS PAth */
+  int               PAPathNum;
+  union AS_PathArea *PAPathList;
+  /* type: 4, MED */
+  int             PAMedBool;
+  u_int32_t       PAMed;
+  /* type: 5, Local pref */
+  int             PALPBool;
+  u_int32_t       PALP;
+  
+  
   /* type: 14, MP_REACH_NLRI */
   u_int16_t       PANLRIAFI; /* [IANA-AF]  "Address Family Numbers" */
   u_int8_t        PANLRIAFIsub;
@@ -213,7 +235,7 @@
 #if 0
 typedef u_int8_t  BGPUpdatePathAttr_Origin_Unit;
 typedef u_int8_t  BGPUpdatePathAttr_AsPath_Type;
-typedef u_int16_t BGPUpdatePathAttr_AsPath_Unit;
+ typedef u_int16_t BGPUpdatePathAttr_AsPath_Unit;
 
 #define BGP_UPDATE_PATHATTR_TYPE_ORIGIN         1
 #define BGP_UPDATE_PATHATTR_TYPE_AS_PATH        2
@@ -227,6 +249,21 @@
 #define BGP_UPDATE_PATHATTR_TYPE_CLUSTER_LIST   10
 #endif
 
+
+/* AS_PATH (Type Code 2):
+ *  0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 3 3
+ *  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Address Family Identifier     | SubsequentAFI | Length        |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Network Address of Next Hop (variable)                        |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Reserved      | NLRI (variable)                               |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * http://www.iana.org/assignments/bgp-parameters/bgp-parameters.xhtml
+ * http://tools.ietf.org/html/rfc4760
+ ******************************************************************************/
+
 /* Multiprotocol Reachable NLRI - MP_REACH_NLRI (Type Code 14):
  *  0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 3 3
  *  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1

--- trunk/libbgp/getBGPmessages.c	(revision 4)
+++ trunk/libbgp/getBGPmessages.c	(revision 5)
@@ -39,6 +39,9 @@
 #endif
 
 
+static int BGPUpdateAS_Path                    (u_int8_t *, ssize_t, BGPUpdateInfo *);
+static int BGPUpdateMED                        (u_int8_t *, ssize_t, BGPUpdateInfo *);
+static int BGPUpdateLP                         (u_int8_t *, ssize_t, BGPUpdateInfo *);
 static int BGPUpdatePathAttributeMPreachNLRI   (u_int8_t *, ssize_t, BGPUpdateInfo *);
 static int BGPUpdatePathAttributeMPUnreachNLRI (u_int8_t *, ssize_t, BGPUpdateInfo *);
 /*%''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''%**
@@ -203,14 +206,23 @@
     case 0: /* reserved */
       return -1;
       break;
-#if 0
     case 1: /* ORIGIN */
+      bgpInfo->PAOrigin = *(pProc + PAHlen);
+      ret = 1;
       break;
+#if 0
     case 2: /* AS_PATH */
+      ret = BGPUpdateAS_Path ((pProc + PAHlen), lenAttr, bgpInfo);
       break;
     case 3: /* NEXT_HOP */
       break;
 #endif
+    case 4: /* MED */
+      ret = BGPUpdateMED ((pProc + PAHlen), lenAttr, bgpInfo);
+      break;
+    case 5: /* LP */
+      ret = BGPUpdateLP ((pProc + PAHlen), lenAttr, bgpInfo);
+      break;
     case 14: /* MP_REACH_NLRI */
       ret = BGPUpdatePathAttributeMPreachNLRI ((pProc + PAHlen), lenAttr, bgpInfo);
       break;
@@ -235,6 +247,78 @@
 }
 
 /*******************************************************************************
+ * Path attribute type 2: *****************************************************
+ *
+ ******************************************************************************/
+static int BGPUpdateAS_Path (u_int8_t *msg, ssize_t size, BGPUpdateInfo *bgpInfo)
+{
+  int     ret, i;
+  ssize_t areaSize;
+  u_int8_t          *psegType;
+  u_int16_t         *pAS;
+  union AS_PathArea *pt;
+
+  if (size==0) {return 1;}
+  psegType           = msg;
+  bgpInfo->PAPathNum = (int)(*(msg+1));
+  areaSize = bgpInfo->PAPathNum * sizeof (union AS_PathArea);
+
+  pt = malloc (areaSize);
+  if (pt==NULL) {return -1;}
+  (void) memset (pt, 0, areaSize);
+  pAS = (u_int16_t *)(msg+2);
+
+  for (i=0; i<bgpInfo->PAPathNum; i++) {
+    (pt+i)->AS2 = be16toh (*(pAS+i));
+    printf ("AS[%d]: %d\n", i, (pt+i)->AS2);
+  }
+
+  return 1;
+}
+
+/*******************************************************************************
+ * Path attribute type 4: *****************************************************
+ *
+ ******************************************************************************/
+static int BGPUpdateMED (u_int8_t *msg, ssize_t size, BGPUpdateInfo *bgpInfo)
+{
+  int     ret, i;
+  ssize_t areaSize;
+  u_int8_t          *psegType;
+  u_int16_t         *pAS;
+  union AS_PathArea *pt;
+
+  bgpInfo->PAMedBool = 0;
+  if (size!=4) {return 0;}
+  bgpInfo->PAMedBool = 1;
+  bgpInfo->PAMed     = be32toh (*(u_int32_t *)msg);
+  printf ("MED: %d\n", bgpInfo->PAMed);
+
+  return 1;
+}
+
+/*******************************************************************************
+ * Path attribute type 5: *****************************************************
+ *
+ ******************************************************************************/
+static int BGPUpdateLP (u_int8_t *msg, ssize_t size, BGPUpdateInfo *bgpInfo)
+{
+  int     ret, i;
+  ssize_t areaSize;
+  u_int8_t          *psegType;
+  u_int16_t         *pAS;
+  union AS_PathArea *pt;
+
+  bgpInfo->PALPBool = 0;
+  if (size!=4) {return 0;}
+  bgpInfo->PALPBool = 1;
+  bgpInfo->PALP     = be32toh (*(u_int32_t *)msg);
+  printf ("LP: %d\n", bgpInfo->PALP);
+
+  return 1;
+}
+
+/*******************************************************************************
  * Path attribute type 14: *****************************************************
  *
  ******************************************************************************/
@@ -285,6 +369,7 @@
 void freeBGPupdateInfo (BGPUpdateInfo *bgpInfo)
 {
   if (bgpInfo->withdrawnList  !=NULL) {free (bgpInfo->withdrawnList  );}
+  if (bgpInfo->PAPathList     !=NULL) {free (bgpInfo->PAPathList     );}
   if (bgpInfo->PANLRIList     !=NULL) {free (bgpInfo->PANLRIList     );}
   if (bgpInfo->PAwithdrawnList!=NULL) {free (bgpInfo->PAwithdrawnList);}
   if (bgpInfo->NLRIList       !=NULL) {free (bgpInfo->NLRIList       );}