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ok, asn32 now fully supported (for Juniper only).

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This commit is contained in:
snar
2008-05-19 11:35:15 +00:00
parent 3d314388cf
commit 0753d92063
3 changed files with 62 additions and 42 deletions
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3
CHANGES
View File

@@ -1,3 +1,6 @@
0.1.2 (2008-05-19):
- final support for asn32, now with correct syntax for Juniper.
0.1.1 (2008-05-16):
- initial support for asn32 added (flag -3). By default it's off,
and when bgpq sees 32-bit asn in resolver queue, it either replaces

53
bgpq3.c
View File

@@ -47,6 +47,41 @@ exclusive()
exit(1);
};
int
parseasnumber(struct bgpq_expander* expander, char* optarg)
{
char* eon=NULL;
expander->asnumber=strtoul(optarg,&eon,10);
if(expander->asnumber<0 || expander->asnumber>(65535ul*65535)) {
sx_report(SX_FATAL,"Invalid AS number: %s\n", optarg);
exit(1);
};
if(eon && *eon=='.') {
/* -f 3.3, for example */
uint32_t loas=strtoul(eon+1,&eon,10);
if(expander->asnumber>65535) {
/* should prevent incorrect numbers like 65537.1 */
sx_report(SX_FATAL,"Invalid AS number: %s\n", optarg);
exit(1);
};
if(loas<0 || loas>65536) {
sx_report(SX_FATAL,"Invalid AS number: %s\n", optarg);
exit(1);
};
if(eon && *eon) {
sx_report(SX_FATAL,"Invalid symbol in AS number: %c (%s)\n",
*eon, optarg);
exit(1);
};
expander->asnumber=(expander->asnumber<<16)+loas;
} else if(eon && *eon) {
sx_report(SX_FATAL,"Invalid symbol in AS number: %c (%s)\n",
*eon, optarg);
exit(1);
};
return 0;
};
int
main(int argc, char* argv[])
{
@@ -71,21 +106,15 @@ main(int argc, char* argv[])
break;
case 'J': expander.vendor=V_JUNIPER;
break;
case 'f': expander.asnumber=atoi(optarg);
if(expander.asnumber<0 || expander.asnumber>65535) {
sx_report(SX_FATAL,"Invalid AS number: %s\n", optarg);
exit(1);
};
case 'f':
if(expander.generation) exclusive();
expander.generation=T_ASPATH;
parseasnumber(&expander,optarg);
break;
case 'G': expander.asnumber=atoi(optarg);
if(expander.asnumber<0 || expander.asnumber>65535) {
sx_report(SX_FATAL,"Invalid AS number: %s\n", optarg);
exit(1);
};
case 'G':
if(expander.generation) exclusive();
expander.generation=T_OASPATH;
parseasnumber(&expander,optarg);
break;
case 'P':
if(expander.generation) exclusive();
@@ -135,7 +164,9 @@ main(int argc, char* argv[])
sx_report(SX_FATAL,"Sorry, AS32-safety is not yet ready for Cisco\n");
};
if(!expander.asn32 && expander.asnumber>=65536) {
expander.asnumber=23456;
};
if(!argv[0]) usage(1);

46
bgpq3_printer.c
View File

@@ -82,8 +82,10 @@ bgpq3_print_juniper_aspath(FILE* f, struct bgpq_expander* b)
fprintf(f,"policy-options {\nreplace:\n as-path-group %s {\n",
b->name?b->name:"NN");
if(b->asn32s[0][b->asnumber/8]&(0x80>>(b->asnumber%8))) {
fprintf(f," as-path a%i \"^%i(%i)*$\";\n", lineNo, b->asnumber,
if(b->asn32s[b->asnumber/65536] &&
b->asn32s[b->asnumber/65535][(b->asnumber/65536)/8]&
(0x80>>(b->asnumber%8))) {
fprintf(f," as-path a%i \"^%u(%u)*$\";\n", lineNo, b->asnumber,
b->asnumber);
lineNo++;
};
@@ -92,21 +94,12 @@ bgpq3_print_juniper_aspath(FILE* f, struct bgpq_expander* b)
for(i=0;i<8192;i++) {
for(j=0;j<8;j++) {
if(b->asn32s[k][i]&(0x80>>j)) {
if(i*8+j==b->asnumber) continue;
if(k*65536+i*8+j==b->asnumber) continue;
if(!nc) {
if(k) {
fprintf(f," as-path a%i \"^%i(.)*(%u.%u",
lineNo,b->asnumber,k,i*8+j);
} else {
fprintf(f," as-path a%i \"^%i(.)*(%u",
lineNo,b->asnumber,i*8+j);
};
fprintf(f," as-path a%i \"^%u(.)*(%u",
lineNo,b->asnumber,k*65536+i*8+j);
} else {
if(k) {
fprintf(f,"|%u.%u",k,i*8+j);
} else {
fprintf(f,"|%u",i*8+j);
};
fprintf(f,"|%u",k*65536+i*8+j);
};
nc++;
if(nc==b->aswidth) {
@@ -130,8 +123,10 @@ bgpq3_print_juniper_oaspath(FILE* f, struct bgpq_expander* b)
fprintf(f,"policy-options {\nreplace:\n as-path-group %s {\n",
b->name?b->name:"NN");
if(b->asn32s[0][b->asnumber/8]&(0x80>>(b->asnumber%8))) {
fprintf(f," as-path a%i \"^%i(%i)*$\";\n", lineNo, b->asnumber,
if(b->asn32s[b->asnumber/65536] &&
b->asn32s[b->asnumber/65536][(b->asnumber/65536)/8]&
(0x80>>(b->asnumber%8))) {
fprintf(f," as-path a%i \"^%u(%u)*$\";\n", lineNo, b->asnumber,
b->asnumber);
lineNo++;
};
@@ -141,21 +136,12 @@ bgpq3_print_juniper_oaspath(FILE* f, struct bgpq_expander* b)
for(i=0;i<8192;i++) {
for(j=0;j<8;j++) {
if(b->asn32s[k][i]&(0x80>>j)) {
if(i*8+j==b->asnumber) continue;
if(k*65536+i*8+j==b->asnumber) continue;
if(!nc) {
if(!k) {
fprintf(f," as-path a%i \"^(.)*(%u",
lineNo,i*8+j);
} else {
fprintf(f," as-path a%i \"^(.)*(%u.%u",
lineNo,k,i*8+j);
};
fprintf(f," as-path a%i \"^(.)*(%u",
lineNo,k*65536+i*8+j);
} else {
if(!k) {
fprintf(f,"|%u",i*8+j);
} else {
fprintf(f,"|%u.%u",k,i*8+j);
};
fprintf(f,"|%u",k*65536+i*8+j);
}
nc++;
if(nc==b->aswidth) {