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Now works really: types are supported and the request goes to the proper nameserver.

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Stephane Bortzmeyer 2004-04-07 13:28:41 +00:00
parent 75818c9b63
commit 5b3b44da62
1 changed files with 31 additions and 5 deletions
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36
SRC/plugins/dns.c
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@ -41,10 +41,10 @@ nsError (error, domain)
(void) fprintf (stderr, "Unknown domain: %s\n", domain);
break;
case NO_DATA:
(void) fprintf (stderr, "No NS records for %s\n", domain);
(void) fprintf (stderr, "No records for %s\n", domain);
break;
case TRY_AGAIN:
(void) fprintf (stderr, "No response for NS query\n");
(void) fprintf (stderr, "No response for query\n");
break;
default:
(void) fprintf (stderr, "Unexpected error\n");
@ -68,7 +68,7 @@ init (const int argc, const char **argv)
{
int value;
char *msg = malloc (256);
char *type_name;
char *type_name = NULL;
/* popt variables */
struct poptOption options[] = {
{"request", 'r', POPT_ARG_STRING, &request, 0,
@ -93,16 +93,41 @@ init (const int argc, const char **argv)
}
if (request == NULL)
dns_usage ("Mandatory request missing");
if (type_name == NULL)
type = T_A;
else
{ /* TODO: a better algorithm. Use dns_rdatatype_fromtext in BIND ? */
if (!strcmp (type_name, "A"))
type = T_A;
else if (!strcmp (type_name, "NS"))
type = T_NS;
else if (!strcmp (type_name, "SOA"))
type = T_SOA;
else if (!strcmp (type_name, "MX"))
type = T_MX;
else if (!strcmp (type_name, "AAAA"))
type = T_AAAA;
else
dns_usage ("Unknown type");
}
return "domain";
}
void
start (struct addrinfo *res)
{
struct sockaddr name_server_sockaddr;
struct sockaddr_in name_server_sockaddr_in;
name_server = *res;
name_server_sockaddr = *name_server.ai_addr;
/* Converts a generic sockaddr to an IPv4 sockaddr_in */
(void) memcpy ((void *) &name_server_sockaddr_in, &name_server_sockaddr,
sizeof (struct sockaddr));
if (res_init () < 0)
err_sys ("res_init");
_res.nsaddr_list[0] = name_server_sockaddr_in; /* TODO: and IPv6? */
_res.nscount = 1;
_res.options &= ~(RES_DNSRCH | RES_DEFNAMES | RES_NOALIASES);
}
int
@ -116,7 +141,7 @@ execute ()
int response_length; /* buffer length */
if ((response_length = res_query (request, /* the domain we care about */
C_IN, /* Internet class records */
T_NS, /* Look up name server records */
type, /* Look up name server records */
(u_char *) & response, /*response buffer */
sizeof (response))) /*buffer size */
< 0)
@ -124,6 +149,7 @@ execute ()
nsError (h_errno, request); /* report the error */
return -1; /* and quit */
}
/* TODO: better analysis of the replies. For instance, replies can be in the authority section (delegation info) */
return 0;
}