You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
88 lines
2.1 KiB
Diff
88 lines
2.1 KiB
Diff
--- a/tdlookup.c
|
|
+++ b/tdlookup.c
|
|
@@ -103,12 +103,13 @@ static int doname(void)
|
|
return response_addname(d1);
|
|
}
|
|
|
|
-static int doit(char *q,char qtype[2])
|
|
+static int doit1(char **pqname,char qtype[2])
|
|
{
|
|
unsigned int bpos;
|
|
unsigned int anpos;
|
|
unsigned int aupos;
|
|
unsigned int arpos;
|
|
+ char *q;
|
|
char *control;
|
|
char *wild;
|
|
int flaggavesoa;
|
|
@@ -122,6 +123,12 @@ static int doit(char *q,char qtype[2])
|
|
int addrnum;
|
|
uint32 addrttl;
|
|
int i;
|
|
+ int loop = 0 ;
|
|
+
|
|
+RESTART:
|
|
+ if (loop++ >= 100) return 0 ;
|
|
+
|
|
+ q = *pqname ;
|
|
|
|
anpos = response_len;
|
|
|
|
@@ -136,7 +143,14 @@ static int doit(char *q,char qtype[2])
|
|
if (byte_equal(type,2,DNS_T_NS)) flagns = 1;
|
|
}
|
|
if (flagns) break;
|
|
- if (!*control) return 0; /* q is not within our bailiwick */
|
|
+ if (!*control) { /* q is not within our bailiwick */
|
|
+ if (loop <= 1)
|
|
+ return 0 ;
|
|
+ else {
|
|
+ response[2] &= ~4;
|
|
+ goto DONE; /* The administrator has issued contradictory instructions */
|
|
+ }
|
|
+ }
|
|
control += *control;
|
|
control += 1;
|
|
}
|
|
@@ -172,9 +186,17 @@ static int doit(char *q,char qtype[2])
|
|
continue;
|
|
}
|
|
if (!response_rstart(q,type,ttl)) return 0;
|
|
- if (byte_equal(type,2,DNS_T_NS) || byte_equal(type,2,DNS_T_CNAME) || byte_equal(type,2,DNS_T_PTR)) {
|
|
+ if (byte_equal(type,2,DNS_T_NS) || byte_equal(type,2,DNS_T_PTR)) {
|
|
if (!doname()) return 0;
|
|
}
|
|
+ else if (byte_equal(type,2,DNS_T_CNAME)) {
|
|
+ if (!doname()) return 0;
|
|
+ if (byte_diff(type,2,qtype)) {
|
|
+ response_rfinish(RESPONSE_ANSWER);
|
|
+ if (!dns_domain_copy(pqname,d1)) return 0 ;
|
|
+ goto RESTART ;
|
|
+ }
|
|
+ }
|
|
else if (byte_equal(type,2,DNS_T_MX)) {
|
|
if (!dobytes(2)) return 0;
|
|
if (!doname()) return 0;
|
|
@@ -275,9 +297,21 @@ static int doit(char *q,char qtype[2])
|
|
}
|
|
}
|
|
|
|
+DONE:
|
|
return 1;
|
|
}
|
|
|
|
+static int doit(char *qname,char qtype[2])
|
|
+{
|
|
+ int r ;
|
|
+ char * q = 0 ;
|
|
+
|
|
+ if (!dns_domain_copy(&q, qname)) return 0 ;
|
|
+ r = doit1(&q, qtype) ;
|
|
+ dns_domain_free(&q) ;
|
|
+ return r ;
|
|
+}
|
|
+
|
|
int respond(char *q,char qtype[2],char ip[4])
|
|
{
|
|
static struct tai cdb_valid = { 0 };
|