juniper route-filter-lists (junos 16.2+).

CHANGES

@@ -1,4 +1,5 @@
-untagged yet (2017-07-19)
+untagged yet (2017-09-08)
+    - initial support for Juniper route-filter-lists (JunOS 16.2+).
     - too large (>124bytes) sources list was not handled correctly.
     Reported by Pier Carlo Chiodi.
 

README.md

@@ -7,7 +7,7 @@ SYNOPSIS
 --------
 
 ```
-	bgpq3 [-h host[:port]] [-S sources] [-EP] [-f asn | -F fmt | -G asn] [-2346ABbDdJjpsX] [-a asn] [-r len] [-R len] [-m max] [-W len] OBJECTS [...] EXCEPT OBJECTS
+	bgpq3 [-h host[:port]] [-S sources] [-EPz] [-f asn | -F fmt | -G asn] [-2346ABbDdJjpsX] [-a asn] [-r len] [-R len] [-m max] [-W len] OBJECTS [...] EXCEPT OBJECTS
 ```
 
 DESCRIPTION
@@ -149,6 +149,10 @@ Generate as-path strings of a given length maximum (0 for infinity).
 
 Generate config for Cisco IOS XR devices (plain IOS by default).
 
+#### -z
+
+Generate Juniper route-filter-list (JunOS 16.2+).
+
 ####  `OBJECTS`
 
 `OBJECTS` means networks (in prefix format), autonomous systems, as-sets and

bgpq3.8

@@ -32,7 +32,7 @@
 .Nm
 .Op Fl h Ar host[:port]
 .Op Fl S Ar sources
-.Op Fl EP
+.Op Fl EPz
 .Oo
 .Fl f Ar asn |
 .Fl F Ar fmt |
@@ -120,6 +120,8 @@ disable pipelining.
 generate as-path strings of no more than len items (use 0 for inifinity).
 .It Fl X
 generate config for Cisco IOS XR devices (plain IOS by default).
+.It Fl z
+generate route-filter-lists (JunOS 16.2+).
 .It Ar OBJECTS 
 means networks (in prefix format), autonomous systems, as-sets and route-sets.
 .It Ar EXCEPT OBJECTS

bgpq3.c

@@ -137,7 +137,7 @@ main(int argc, char* argv[])
 	if (getenv("IRRD_SOURCES"))
 		expander.sources=getenv("IRRD_SOURCES");
 
-	while((c=getopt(argc,argv,"2346a:AbBdDEF:S:jJf:l:L:m:M:NW:Ppr:R:G:Th:Xs"))
+	while((c=getopt(argc,argv,"2346a:AbBdDEF:S:jJf:l:L:m:M:NW:Ppr:R:G:Th:Xsz"))
 		!=EOF) {
 	switch(c) {
 		case '2':
@@ -308,6 +308,10 @@ main(int argc, char* argv[])
 		case 'X': if(expander.vendor) vendor_exclusive();
 			expander.vendor=V_CISCO_XR;
 			break;
+		case 'z':
+			if(expander.generation) exclusive();
+			expander.generation=T_ROUTE_FILTER_LIST;
+			break;
 		default : usage(1);
 	};
 	};
@@ -368,6 +372,10 @@ main(int argc, char* argv[])
 			"compatible with -R/-r options\n");
 		exit(1);
 	};
+	if(expander.generation==T_ROUTE_FILTER_LIST && expander.vendor!=V_JUNIPER) {
+		sx_report(SX_FATAL, "Route-filter-lists (-z) supported for Juniper (-J)"
+			" output only\n");
+	};
 
 	if(expander.asdot && expander.vendor!=V_CISCO) {
 		sx_report(SX_FATAL,"asdot notation supported only for Cisco, "
@@ -381,8 +389,9 @@ main(int argc, char* argv[])
 	if(aggregate && expander.vendor==V_JUNIPER &&
 		expander.generation==T_PREFIXLIST) {
 		sx_report(SX_FATAL, "Sorry, aggregation (-A) does not work in"
-			" Juniper prefix-lists\nYou can try route-filters (-E) instead"
-			" of prefix-lists (-P, default)\n");
+			" Juniper prefix-lists\nYou can try route-filters (-E) "
+			"or route-filter-lists (-z) instead of prefix-lists "
+			"(-P, default)\n");
 		exit(1);
 	};
 
@@ -447,11 +456,13 @@ main(int argc, char* argv[])
 			if(refine) {
 				sx_report(SX_FATAL, "Sorry, more-specific filters (-R %u) "
 					"is not supported for Juniper prefix-lists.\n"
-					"Use router-filters (-E) instead\n", refine);
+					"Use router-filters (-E) or route-filter-lists (-z) "
+					"instead\n", refine);
 			} else {
 				sx_report(SX_FATAL, "Sorry, more-specific filters (-r %u) "
 					"is not supported for Juniper prefix-lists.\n"
-					"Use route-filters (-E) instead\n", refineLow);
+					"Use route-filters (-E) or route-filter-lists (-z) "
+					"instead\n", refineLow);
 			};
 		};
 
@@ -568,7 +579,6 @@ main(int argc, char* argv[])
 		sx_radix_tree_aggregate(expander.tree);
 
 	switch(expander.generation) {
-		default    :
 		case T_NONE: sx_report(SX_FATAL,"Unreachable point... call snar\n");
 			exit(1);
 		case T_ASPATH: bgpq3_print_aspath(stdout,&expander);
@@ -579,6 +589,9 @@ main(int argc, char* argv[])
 			break;
 		case T_EACL: bgpq3_print_eacl(stdout,&expander);
 			break;
+		case T_ROUTE_FILTER_LIST:
+			bgpq3_print_route_filter_list(stdout, &expander);
+			break;
 	};
 
 	return 0;

bgpq3.h

@@ -26,7 +26,8 @@ typedef enum {
 	T_ASPATH,
 	T_OASPATH,
 	T_PREFIXLIST,	
-	T_EACL
+	T_EACL,
+	T_ROUTE_FILTER_LIST
 } bgpq_gen_t;
 
 struct bgpq_expander;
@@ -82,6 +83,7 @@ int bgpq3_print_prefixlist(FILE* f, struct bgpq_expander* b);
 int bgpq3_print_eacl(FILE* f, struct bgpq_expander* b);
 int bgpq3_print_aspath(FILE* f, struct bgpq_expander* b);
 int bgpq3_print_oaspath(FILE* f, struct bgpq_expander* b);
+int bgpq3_print_route_filter_list(FILE* f, struct bgpq_expander* b);
 
 #ifndef HAVE_STRLCPY
 size_t strlcpy(char* dst, const char* src, size_t size);

bgpq3_printer.c

@@ -639,6 +639,8 @@ bgpq3_print_openbgpd_aspath(FILE* f, struct bgpq_expander* b)
 	return 0;
 };
 
+static int jrfilter_prefixed=1;
+
 void
 bgpq3_print_jrfilter(struct sx_radix_node* n, void* ff)
 {
@@ -648,13 +650,17 @@ bgpq3_print_jrfilter(struct sx_radix_node* n, void* ff)
 	if(!f) f=stdout;
 	sx_prefix_snprintf(&n->prefix,prefix,sizeof(prefix));
 	if(!n->isAggregate) {
-		fprintf(f,"    route-filter %s exact;\n", prefix);
+		fprintf(f,"    %s%s exact;\n",
+			jrfilter_prefixed ? "route-filter " : "", prefix);
 	} else {
 		if(n->aggregateLow>n->prefix.masklen) {
-			fprintf(f,"    route-filter %s prefix-length-range /%u-/%u;\n",
+			fprintf(f,"    %s%s prefix-length-range /%u-/%u;\n",
+				jrfilter_prefixed ? "route-filter " : "",
 				prefix,n->aggregateLow,n->aggregateHi);
 		} else {
-			fprintf(f,"    route-filter %s upto /%u;\n", prefix,n->aggregateHi);
+			fprintf(f,"    %s%s upto /%u;\n",
+				jrfilter_prefixed ? "route-filter " : "",
+				prefix,n->aggregateHi);
 		};
 	};
 checkSon:
@@ -852,6 +858,7 @@ bgpq3_print_juniper_routefilter(FILE* f, struct bgpq_expander* b)
 			fprintf(f,"    %s;\n",b->match);
 	};
 	if(!sx_radix_tree_empty(b->tree)) {
+		jrfilter_prefixed=1;
 		sx_radix_tree_foreach(b->tree,bgpq3_print_jrfilter,f);
 	} else {
 		fprintf(f,"    route-filter %s/0 orlonger reject;\n",
@@ -1057,3 +1064,29 @@ bgpq3_print_eacl(FILE* f, struct bgpq_expander* b)
 	};
 	return 0;
 };
+
+int
+bgpq3_print_juniper_route_filter_list(FILE* f, struct bgpq_expander* b)
+{
+	fprintf(f, "policy-options {\nreplace:\n  route-filter-list %s {\n",
+		b->name?b->name:"NN");
+	if (sx_radix_tree_empty(b->tree)) {
+		fprintf(f, "    route-filter %s/0 orlonger reject;\n",
+			b->tree->family == AF_INET ? "0.0.0.0" : "::");
+	} else {
+		jrfilter_prefixed=0;
+		sx_radix_tree_foreach(b->tree,bgpq3_print_jrfilter,f);
+	};
+	fprintf(f, "  }\n}\n");
+	return 0;
+};
+
+int
+bgpq3_print_route_filter_list(FILE* f, struct bgpq_expander* b)
+{
+	switch(b->vendor) {
+		case V_JUNIPER: return bgpq3_print_juniper_route_filter_list(f,b);
+		default: sx_report(SX_FATAL, "unreachable point\n");
+	};
+	return 0;
+};