#include <errno.h>
#include <string.h>
#include <stdlib.h>
+#include <assert.h>
#include <arpa/nameser.h>
#include <sys/socket.h>
}
static void addserver(adns_state ads, struct in_addr addr) {
+ int i;
+
+ for (i=0; i<ads->nservers; i++) {
+ if (ads->servers[i].addr.s_addr == addr.s_addr) {
+ debug(ads,"duplicate nameserver %s ignored",inet_ntoa(addr));
+ return;
+ }
+ }
+
if (ads->nservers>=MAXSERVERS) {
diag(ads,"too many nameservers, ignoring %s",inet_ntoa(addr));
- } else {
- ads->servers[ads->nservers].addr= addr;
- ads->servers[ads->nservers].tcpsocket= -1;
- ads->nservers++;
+ return;
}
+
+ ads->servers[ads->nservers].addr= addr;
+ ads->servers[ads->nservers].tcpsocket= -1;
+ ads->nservers++;
}
static void configparseerr(adns_state ads, const char *fn, int lno,
const char *value;
value= getenv(envvar);
- if (!value) debug(ads,"environment variable `%s' not set",envvar);
- else debug(ads,"environment variable `%s' set to `%s'",envvar,value);
+ if (!value) debug(ads,"environment variable %s not set",envvar);
+ else debug(ads,"environment variable %s set to `%s'",envvar,value);
return value;
}
}
static void query_fail(adns_state ads, adns_query qu, adns_status stat) {
- struct adns_answer *ans;
+ adns_answer *ans;
ans= qu->answer;
if (!ans) ans= malloc(sizeof(*qu->answer));
LIST_LINK_TAIL(ads->input,qu);
}
-void adns_interest(adns_state ads,
+void adns_interest(adns_state ads, int *maxfd,
fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
- int *maxfd, struct timeval **tv_io, struct timeval *tvbuf) {
+ struct timeval **tv_io, struct timeval *tvbuf) {
abort(); /* FIXME */
}
+static void autosys(adns_state ads) {
+ if (ads->iflags & adns_if_noautosys) return;
+ adns_callback(ads,-1,0,0,0);
+}
+
+void adns_cancel(adns_state ads, adns_query query) {
+ abort(); /* FIXME */
+}
+
+int adns_callback(adns_state ads, int maxfd,
+ const fd_set *readfds, const fd_set *writefds,
+ const fd_set *exceptfds) {
+ abort(); /* FIXME */
+}
+
+static int internal_check(adns_state ads,
+ adns_query *query_io,
+ adns_answer *answer,
+ void *context_r) {
+ abort(); /* FIXME */
+}
+
+int adns_wait(adns_state ads,
+ adns_query *query_io,
+ adns_answer *answer,
+ void *context_r) {
+ int r, maxfd, rsel, rcb;
+ fd_set readfds, writefds, exceptfds;
+ struct timeval tvbuf, *tvp;
+
+ for (;;) {
+ r= internal_check(ads,query_io,answer,context_r);
+ if (r && r != EWOULDBLOCK) return r;
+ FD_ZERO(&readfds); FD_ZERO(&writefds); FD_ZERO(&exceptfds);
+ maxfd= 0; tvp= 0;
+ adns_interest(ads,&maxfd,&readfds,&writefds,&exceptfds,&tvp,&tvbuf);
+ rsel= select(maxfd,&readfds,&writefds,&exceptfds,tvp);
+ if (rsel==-1) return r;
+ rcb= adns_callback(ads,maxfd,&readfds,&writefds,&exceptfds);
+ assert(rcb==rsel);
+ }
+}
+
+int adns_check(adns_state ads,
+ adns_query *query_io,
+ adns_answer *answer,
+ void *context_r) {
+ autosys(ads);
+ return internal_check(ads,query_io,answer,context_r);
+}
+
+int adns_synchronous(adns_state ads,
+ const char *owner,
+ adns_rrtype type,
+ int flags,
+ adns_answer *answer) {
+ adns_query qu;
+ int r;
+
+ r= adns_submit(ads,owner,type,flags,0,&qu);
+ if (r) return r;
+
+ r= adns_wait(ads,&qu,answer,0);
+ if (r) adns_cancel(ads,qu);
+ return r;
+}
+
int adns_submit(adns_state ads,
const char *owner,
adns_rrtype type,
query_fail(ads,qu,stat);
} else {
LIST_LINK_TAIL(ads->input,qu);
- adns_interest(ads,0,0,0,0,0,0);
+ autosys(ads);
}
*query_r= qu;
-
- abort(); /* FIXME */
+ return 0;
}