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Add support to output in BIRD prefix-list style

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This commit is contained in:
Job Snijders
2014-06-04 18:10:59 +02:00
parent 407ed02205
commit e3abb19109
5 changed files with 59 additions and 6 deletions
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4
README.md
View File

@@ -34,6 +34,10 @@ The options are as follows:
> try to aggregate generated filters as much as possible (not all
output formats supported).
- -b
> generate output in BIRD format (default: Cisco).
- -d
> enable some debugging output.

2
bgpq3.8
View File

@@ -60,6 +60,8 @@ generate IPv6 prefix/access-lists (IPv4 by default).
.It Fl A
try to aggregate prefix-lists as much as possible (not all output
formats supported).
.It Fl b
generate output in BIRD format (default: Cisco).
.It Fl d
enable some debugging output.
.It Fl D

18
bgpq3.c
View File

@@ -24,12 +24,13 @@ int
usage(int ecode)
{
printf("\nUsage: bgpq3 [-h host] [-S sources] [-P|E|G <num>|f <num>]"
" [-346ADJjXd] [-R len] <OBJECTS>...\n");
" [-346AbDJjXd] [-R len] <OBJECTS>...\n");
printf(" -3 : assume that your device is asn32-safe\n");
printf(" -4 : generate IPv4 prefix-lists (default)\n");
printf(" -6 : generate IPv6 prefix-lists (IPv4 by default)\n");
printf(" -A : try to aggregate Cisco prefix-lists or Juniper "
"route-filters\n as much as possible\n");
printf(" -b : generate BIRD output (Cisco IOS by default)\n");
printf(" -d : generate some debugging output\n");
printf(" -D : use asdot notation in as-path\n");
printf(" -E : generate extended access-list(Cisco) or "
@@ -69,8 +70,8 @@ exclusive()
void
vendor_exclusive()
{
fprintf(stderr, "-J (JunOS), -j (JSON) and -X (IOS XR) options are mutually"
" exclusive\n");
fprintf(stderr, "-b (BIRD), -J (JunOS), -j (JSON) and -X (IOS XR) options are "
"mutually exclusive\n");
exit(1);
};
@@ -121,7 +122,7 @@ main(int argc, char* argv[])
bgpq_expander_init(&expander,af);
expander.sources=getenv("IRRD_SOURCES");
while((c=getopt(argc,argv,"346AdDES:jJf:l:m:M:W:Pr:R:G:Th:X"))!=EOF) {
while((c=getopt(argc,argv,"346AbdDES:jJf:l:m:M:W:Pr:R:G:Th:X"))!=EOF) {
switch(c) {
case '3':
expander.asn32=1;
@@ -147,6 +148,9 @@ main(int argc, char* argv[])
if(aggregate) debug_aggregation++;
aggregate=1;
break;
case 'b': if(expander.vendor) vendor_exclusive();
expander.vendor=V_BIRD;
break;
case 'd': debug_expander++;
break;
case 'D': expander.asdot=1;
@@ -268,9 +272,13 @@ main(int argc, char* argv[])
expander.generation=T_PREFIXLIST;
};
if(expander.vendor==V_CISCO_XR && expander.generation!=T_PREFIXLIST) {
if(expander.vendor==V_CISCO_XR && expander.generation!=T_PREFIXLIST) {
sx_report(SX_FATAL, "Sorry, only prefix-sets supported for IOS XR\n");
};
if(expander.vendor==V_BIRD && expander.generation!=T_PREFIXLIST) {
sx_report(SX_FATAL, "Sorry, only prefix-lists supported for BIRD "
"output\n");
};
if(expander.vendor==V_JSON && expander.generation!=T_PREFIXLIST) {
sx_report(SX_FATAL, "Sorry, only prefix-lists supported for JSON "
"output\n");

3
bgpq3.h
View File

@@ -8,7 +8,8 @@ typedef enum {
V_CISCO = 0,
V_JUNIPER,
V_CISCO_XR,
V_JSON
V_JSON,
V_BIRD
} bgpq_vendor_t;
typedef enum {

38
bgpq3_printer.c
View File

@@ -270,6 +270,32 @@ checkSon:
bgpq3_print_json_prefix(n->son, ff);
};
void
bgpq3_print_bird_prefix(struct sx_radix_node* n, void* ff)
{
char prefix[128];
FILE* f=(FILE*)ff;
if(n->isGlue)
goto checkSon;
if(!f)
f=stdout;
sx_prefix_snprintf(&n->prefix, prefix, sizeof(prefix));
if (!n->isAggregate) {
fprintf(f, "%s\n %s",
needscomma?",":"", prefix);
} else if (n->aggregateLow > n->prefix.masklen) {
fprintf(f, "%s\n %s{%u,%u}",
needscomma?",":"", prefix, n->aggregateLow, n->aggregateHi);
} else {
fprintf(f, "%s\n %s{%u,%u}",
needscomma?",":"", prefix, n->prefix.masklen, n->aggregateHi);
};
needscomma=1;
checkSon:
if(n->son)
bgpq3_print_bird_prefix(n->son, ff);
};
void
bgpq3_print_jrfilter(struct sx_radix_node* n, void* ff)
{
@@ -479,6 +505,16 @@ bgpq3_print_json_prefixlist(FILE* f, struct bgpq_expander* b)
return 0;
};
int
bgpq3_print_bird_prefixlist(FILE* f, struct bgpq_expander* b)
{
fprintf(f,"%s = [",
b->name?b->name:"NN");
sx_radix_tree_foreach(b->tree,bgpq3_print_bird_prefix,f);
fprintf(f,"\n];\n");
return 0;
};
int
bgpq3_print_cisco_eacl(FILE* f, struct bgpq_expander* b)
{
@@ -497,6 +533,7 @@ bgpq3_print_prefixlist(FILE* f, struct bgpq_expander* b)
case V_CISCO: return bgpq3_print_cisco_prefixlist(f,b);
case V_CISCO_XR: return bgpq3_print_ciscoxr_prefixlist(f,b);
case V_JSON: return bgpq3_print_json_prefixlist(f,b);
case V_BIRD: return bgpq3_print_bird_prefixlist(f,b);
};
return 0;
};
@@ -509,6 +546,7 @@ bgpq3_print_eacl(FILE* f, struct bgpq_expander* b)
case V_CISCO: return bgpq3_print_cisco_eacl(f,b);
case V_CISCO_XR: sx_report(SX_FATAL, "unreachable point\n");
case V_JSON: sx_report(SX_FATAL, "unreachable point\n");
case V_BIRD: sx_report(SX_FATAL, "unreachable point\n");
};
return 0;
};