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ndb/cs: handle v4 only case for rudp

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This commit is contained in:
cinap_lenrek 2018-01-28 17:58:16 +01:00
parent 1d10ecdaae
commit b3b938d5ec
1 changed files with 27 additions and 27 deletions
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54
sys/src/cmd/ndb/cs.c
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@ -146,8 +146,12 @@ struct Network
char *net;
Ndbtuple *(*lookup)(Network*, char*, char*);
char *(*trans)(Ndbtuple*, Network*, char*, char*, int);
int considered; /* flag: ignored for "net!"? */
int fasttimeouthack; /* flag. was for IL */
char considered; /* flag: ignored for "net!"? */
char fasttimeouthack; /* flag. was for IL */
char v4only;
char v6only;
Network *next;
};
@ -159,15 +163,15 @@ enum {
* net doesn't apply to (r)udp, icmp(v6), or telco (for speed).
*/
Network network[] = {
{ "il", iplookup, iptrans, 0, 1, },
{ "tcp", iplookup, iptrans, 0, 0, },
{ "il", iplookup, iptrans, 0, 0, },
{ "udp", iplookup, iptrans, 1, 0, },
{ "icmp", iplookup, iptrans, 1, 0, },
{ "icmpv6", iplookup, iptrans, 1, 0, },
{ "rudp", iplookup, iptrans, 1, 0, },
{ "ssh", iplookup, iptrans, 1, 0, },
{ "telco", telcolookup, telcotrans, 1, 0, },
{ "il", iplookup, iptrans, 0, 1, 1, 0, },
{ "tcp", iplookup, iptrans, 0, 0, 0, 0, },
{ "il", iplookup, iptrans, 0, 0, 1, 0, },
{ "udp", iplookup, iptrans, 1, 0, 0, 0, },
{ "icmp", iplookup, iptrans, 1, 0, 1, 0, },
{ "icmpv6", iplookup, iptrans, 1, 0, 0, 1, },
{ "rudp", iplookup, iptrans, 1, 0, 1, 0, },
{ "ssh", iplookup, iptrans, 1, 0, 0, 0, },
{ "telco", telcolookup, telcotrans, 1, 0, 0, 0, },
{ 0 },
};
@ -1369,6 +1373,13 @@ ipattrlookup(Ndb *db, char *ipa, char *attr, char *val, int vlen)
return 0;
}
static int
isv4str(char *s)
{
uchar ip[IPaddrlen];
return parseip(ip, s) != -1 && isv4(ip);
}
/*
* lookup (and translate) an ip destination
*/
@ -1385,7 +1396,6 @@ iplookup(Network *np, char *host, char *serv)
uchar tnet[IPaddrlen];
Ipifc *ifc;
Iplifc *lifc;
int v6;
/*
* start with the service since it's the most likely to fail
@ -1444,20 +1454,19 @@ iplookup(Network *np, char *host, char *serv)
*/
t = 0;
werrstr("can't translate address");
v6 = strcmp(np->net, "il") != 0;
if(strcmp(attr, "dom") == 0)
t = dnsiplookup(host, &s, v6);
t = dnsiplookup(host, &s, !np->v4only);
if(t == nil)
free(ndbgetvalue(db, &s, attr, host, "ip", &t));
if(t == nil){
dnsname = ndbgetvalue(db, &s, attr, host, "dom", nil);
if(dnsname){
t = dnsiplookup(dnsname, &s, v6);
t = dnsiplookup(dnsname, &s, !np->v4only);
free(dnsname);
}
}
if(t == nil)
t = dnsiplookup(host, &s, v6);
t = dnsiplookup(host, &s, !np->v4only);
if(t == nil)
return nil;
@ -1492,13 +1501,6 @@ iplookup(Network *np, char *host, char *serv)
return t;
}
static int
isv4str(char *s)
{
uchar ip[IPaddrlen];
return parseip(ip, s) != -1 && isv4(ip);
}
/*
* translate an ip address
*/
@ -1525,12 +1527,10 @@ iptrans(Ndbtuple *t, Network *np, char *serv, char *rem, int hack)
snprint(reply, sizeof(reply), "%s/%s/clone %s%s",
mntpt, np->net, ts, x);
else {
/* il and icmp only supports ipv4 addresses */
if((strcmp(np->net, "il") == 0 || strcmp(np->net, "icmp") == 0) && !isv4str(t->val))
if(np->v4only && !isv4str(t->val))
return nil;
/* icmpv6 does not support ipv4 addresses */
if(strcmp(np->net, "icmpv6") == 0 && isv4str(t->val))
if(np->v6only && isv4str(t->val))
return nil;
snprint(reply, sizeof(reply), "%s/%s/clone %s!%s%s%s",