From 11cb620266035ffbe17b21c4a174380cb8b6a521 Mon Sep 17 00:00:00 2001
From: Ondrej Zajicek <santiago@crfreenet.org>
Date: Sun, 26 Oct 2008 22:36:08 +0100
Subject: Implementation of 4B ASN support for BGP

---
 filter/config.Y | 11 ++++-------
 filter/filter.c | 26 +++++++++++++++++++++++++-
 2 files changed, 29 insertions(+), 8 deletions(-)

(limited to 'filter')

diff --git a/filter/config.Y b/filter/config.Y
index d4bf44c..fdfb2e7 100644
--- a/filter/config.Y
+++ b/filter/config.Y
@@ -39,7 +39,6 @@ CF_KEYWORDS(FUNCTION, PRINT, PRINTN, UNSET, RETURN,
 %type <v> set_atom fprefix fprefix_s fipa
 %type <s> decls declsn one_decl function_params 
 %type <h> bgp_path
-%type <i> bgp_one
 
 CF_GRAMMAR
 
@@ -273,14 +272,12 @@ switch_body: /* EMPTY */ { $$ = NULL; }
 
 /* CONST '(' expr ')' { $$ = f_new_inst(); $$->code = 'c'; $$->aux = T_INT; $$->a2.i = $3; } */
 
-bgp_one:
-   NUM { $$ = $1; }
- | '?' { $$ = PM_ANY; }
- ;
 
 bgp_path: 
-   bgp_one          { $$ = cfg_alloc(sizeof(struct f_path_mask)); $$->next = NULL; $$->val  = $1; }
- | bgp_one bgp_path { $$ = cfg_alloc(sizeof(struct f_path_mask)); $$->next = $2;   $$->val  = $1; }
+   NUM          { $$ = cfg_alloc(sizeof(struct f_path_mask)); $$->next = NULL; $$->val  = $1; $$->any = 0; }
+ | '?'          { $$ = cfg_alloc(sizeof(struct f_path_mask)); $$->next = NULL; $$->val  = 0;  $$->any = 1; }
+ | NUM bgp_path { $$ = cfg_alloc(sizeof(struct f_path_mask)); $$->next = $2;   $$->val  = $1; $$->any = 0; }
+ | '?' bgp_path { $$ = cfg_alloc(sizeof(struct f_path_mask)); $$->next = $2;   $$->val  = 0;  $$->any = 1; }
  ;
 
 constant:
diff --git a/filter/filter.c b/filter/filter.c
index 9cde3d9..7893d9a 100644
--- a/filter/filter.c
+++ b/filter/filter.c
@@ -69,6 +69,30 @@ pm_path_compare(struct f_path_mask *m1, struct f_path_mask *m2)
   }
 }
 
+static void
+pm_format(struct f_path_mask *p, byte *buf, unsigned int size)
+{
+  byte *end = buf + size - 16;
+
+  while (p)
+    {
+      if (buf > end)
+	{
+	  strcpy(buf, " ...");
+	  return;
+	}
+
+      if (p->any)
+	buf += bsprintf(buf, "? ");
+      else
+	buf += bsprintf(buf, "%u ", p->val);
+
+      p = p->next;
+    }
+
+  *buf = 0;
+}
+
 /**
  * val_compare - compare two values
  * @v1: first value
@@ -224,7 +248,7 @@ val_print(struct f_val v)
   case T_ENUM: PRINTF( "(enum %x)%d", v.type, v.val.i ); break;
   case T_PATH: as_path_format(v.val.ad, buf2, 1020); PRINTF( "(path %s)", buf2 ); break;
   case T_CLIST: int_set_format(v.val.ad, buf2, 1020); PRINTF( "(clist %s)", buf2 ); break;
-  case T_PATH_MASK: debug( "(pathmask " ); { struct f_path_mask *p = v.val.path_mask; while (p) { debug("%d ", p->val); p=p->next; } debug(")" ); } break;
+  case T_PATH_MASK: pm_format(v.val.path_mask, buf2, 1020); PRINTF( "(pathmask %s)", buf2 ); break;
   default: PRINTF( "[unknown type %x]", v.type );
 #undef PRINTF
   }
-- 
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