diff options
Diffstat (limited to 'rfc1035')
| -rw-r--r-- | rfc1035/rfc1035resolve.c | 84 |
1 files changed, 59 insertions, 25 deletions
diff --git a/rfc1035/rfc1035resolve.c b/rfc1035/rfc1035resolve.c index ecd353c..f438719 100644 --- a/rfc1035/rfc1035resolve.c +++ b/rfc1035/rfc1035resolve.c @@ -85,8 +85,6 @@ struct rfc1035_reply static struct rfc1035_reply *rfc1035_resolve_multiple_attempt(struct rfc1035_res *res, int opcode, - const struct rfc1035_query *queries, - unsigned nqueries, struct querybuf *qbuf, int udpfd, int af, @@ -94,6 +92,15 @@ static struct rfc1035_reply unsigned current_timeout); static struct rfc1035_reply +*rfc1035_resolve_multiple_attempt_tcp(struct rfc1035_res *res, + int opcode, + struct querybuf *qbuf, + int af, + const RFC1035_ADDR *sin, + int isaxfr, + unsigned current_timeout); + +static struct rfc1035_reply *rfc1035_resolve_multiple_idna(struct rfc1035_res *res, int opcode, const struct rfc1035_query *queries, @@ -107,6 +114,9 @@ static struct rfc1035_reply unsigned current_timeout, timeout_backoff; unsigned nbackoff, backoff_num; int af; + unsigned i; + int isaxfr=0; + struct rfc1035_reply *rfcreply=0; static const char fakereply[]={0, 0, 0, RFC1035_RCODE_SERVFAIL, 0, 0, @@ -128,6 +138,16 @@ static struct rfc1035_reply return (0); } + for (i=0; i<nqueries; i++) + if (queries[i].qtype == RFC1035_TYPE_AXFR) + { + isaxfr=1; + break; + } + + if (isaxfr && nqueries > 1) + return rfc1035_replyparse(fakereply, sizeof(fakereply)); + /* Prepare the UDP socket */ if ((udpfd=rfc1035_open_udp(&af)) < 0) return (0); @@ -149,11 +169,18 @@ static struct rfc1035_reply const RFC1035_ADDR *sin= &ns[(res->rfc1035_good_ns+attempt) % nscount]; - rfcreply=rfc1035_resolve_multiple_attempt + rfcreply=isaxfr ? + rfc1035_resolve_multiple_attempt_tcp + (res, + opcode, + &qbuf, + af, + sin, + 1, + current_timeout) + : rfc1035_resolve_multiple_attempt (res, opcode, - queries, - nqueries, &qbuf, udpfd, af, @@ -184,8 +211,6 @@ static struct rfc1035_reply static struct rfc1035_reply *rfc1035_resolve_multiple_attempt(struct rfc1035_res *res, int opcode, - const struct rfc1035_query *queries, - unsigned nqueries, struct querybuf *qbuf, int udpfd, int af, @@ -198,19 +223,8 @@ static struct rfc1035_reply int sin_len=sizeof(*sin); - int dotcp=0, isaxfr=0; - unsigned i; - - for (i=0; i<nqueries; i++) - if (queries[i].qtype == RFC1035_TYPE_AXFR) - { - dotcp=1; - isaxfr=1; - break; - } + int dotcp=0; - if (isaxfr && nqueries > 1) - return NULL; if (!dotcp) { @@ -253,6 +267,30 @@ static struct rfc1035_reply if (dotcp) { + rfcreply=rfc1035_resolve_multiple_attempt_tcp + (res, opcode, qbuf, af, sin, 0, + current_timeout); + if (!rfcreply) + return NULL; + } + + memcpy(&rfcreply->server_addr, sin, sin_len); + return (rfcreply); +} + +static struct rfc1035_reply +*rfc1035_resolve_multiple_attempt_tcp(struct rfc1035_res *res, + int opcode, + struct querybuf *qbuf, + int af, + const RFC1035_ADDR *sin, + int isaxfr, + unsigned current_timeout) +{ + int nbytes; + char *reply; + struct rfc1035_reply *rfcreply; + int tcpfd; struct rfc1035_reply *firstreply=0, *lastreply=0; @@ -304,12 +342,8 @@ static struct rfc1035_reply break; } sox_close(tcpfd); - if (!firstreply) - return NULL; - rfcreply=firstreply; - } - memcpy(&rfcreply->server_addr, sin, sin_len); - return (rfcreply); + + return firstreply; } struct rfc1035_reply *rfc1035_resolve( |