*/
#include <sys/types.h>
-#include <netinet/in.h>
#include <arpa/nameser.h>
#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
#include <resolv.h>
#include <glob.h>
#include "dns.h"
#include "service.h"
#include "util.h"
+#include "interface.h"
enum {
SERVICE_PORT,
[SERVICE_TXT] = { .name = "txt", .type = BLOBMSG_TYPE_ARRAY },
};
-static const struct uci_blob_param_list service_attr_list = {
- .n_params = __SERVICE_MAX,
- .params = service_policy,
-};
-
static void
service_update(struct vlist_tree *tree, struct vlist_node *node_new,
struct vlist_node *node_old);
static struct blob_buf b;
static VLIST_TREE(services, avl_strcmp, service_update, false, false);
-char *hostname = NULL;
static char *sdudp = "_services._dns-sd._udp.local";
static char *sdtcp = "_services._dns-sd._tcp.local";
-char *
+static const char *
service_name(const char *domain)
{
static char buffer[256];
- snprintf(buffer, sizeof(buffer), "%s.%s", hostname, domain);
+ snprintf(buffer, sizeof(buffer), "%s.%s", mdns_hostname, domain);
return buffer;
}
static void
-service_send_ptr(struct uloop_fd *u, struct service *s)
+service_add_ptr(const char *host)
{
- unsigned char buffer[MAX_NAME_LEN];
- const char *host = service_name(s->service);
- int len = dn_comp(host, buffer, MAX_NAME_LEN, NULL, NULL);
+ int len = dn_comp(host, mdns_buf, sizeof(mdns_buf), NULL, NULL);
if (len < 1)
return;
- dns_add_answer(TYPE_PTR, buffer, len);
+ dns_add_answer(TYPE_PTR, mdns_buf, len);
}
static void
-service_send_ptr_c(struct uloop_fd *u, const char *host)
+service_add_srv(struct service *s)
{
- unsigned char buffer[MAX_NAME_LEN];
- int len = dn_comp(host, buffer, MAX_NAME_LEN, NULL, NULL);
+ struct dns_srv_data *sd = (struct dns_srv_data *) mdns_buf;
+ int len = sizeof(*sd);
- if (len < 1)
- return;
-
- dns_add_answer(TYPE_PTR, buffer, len);
-}
-
-static void
-service_send_a(struct uloop_fd *u)
-{
- unsigned char buffer[MAX_NAME_LEN];
- char *host = service_name("local");
- int len = dn_comp(host, buffer, MAX_NAME_LEN, NULL, NULL);
- struct in_addr in;
-
- if (!inet_aton(iface_ip, &in)) {
- fprintf(stderr, "%s is not valid\n", iface_ip);
- return;
- }
-
- if (len < 1)
- return;
-
- dns_add_answer(TYPE_A, (uint8_t *) &in.s_addr, 4);
-}
-
-static void
-service_send_srv(struct uloop_fd *u, struct service *s)
-{
- unsigned char buffer[MAX_NAME_LEN];
- struct dns_srv_data *sd;
- char *host = service_name("local");
- int len = dn_comp(host, buffer, MAX_NAME_LEN, NULL, NULL);
-
- if (len < 1)
- return;
-
- sd = calloc(1, len + sizeof(struct dns_srv_data));
- if (!sd)
+ len += dn_comp(mdns_hostname_local, mdns_buf + len, sizeof(mdns_buf) - len, NULL, NULL);
+ if (len <= sizeof(*sd))
return;
sd->port = cpu_to_be16(s->port);
- memcpy(&sd[1], buffer, len);
- host = service_name(s->service);
- dns_add_answer(TYPE_SRV, (uint8_t *) sd, len + sizeof(struct dns_srv_data));
- free(sd);
+ dns_add_answer(TYPE_SRV, mdns_buf, len);
}
#define TOUT_LOOKUP 60
}
void
-service_reply_a(struct uloop_fd *u, int type)
+service_reply_a(struct interface *iface, int type)
{
if (type != TYPE_A)
return;
dns_init_answer();
- service_send_a(u);
- dns_send_answer(u, service_name("local"));
+ dns_add_answer(TYPE_A, (uint8_t *) &iface->v4_addr.s_addr, 4);
+ dns_send_answer(iface, mdns_hostname_local);
}
void
-service_reply(struct uloop_fd *u, const char *match)
+service_reply(struct interface *iface, const char *match)
{
struct service *s;
vlist_for_each_element(&services, s, node) {
- char *host = service_name(s->service);
+ const char *host = service_name(s->service);
char *service = strstr(host, "._");
if (!s->active || !service || !service_timeout(s))
continue;
dns_init_answer();
- service_send_ptr(u, s);
- dns_send_answer(u, service);
+ service_add_ptr(service_name(s->service));
+ dns_send_answer(iface, service);
dns_init_answer();
- service_send_srv(u, s);
+ service_add_srv(s);
if (s->txt && s->txt_len)
dns_add_answer(TYPE_TXT, (uint8_t *) s->txt, s->txt_len);
- dns_send_answer(u, host);
+ dns_send_answer(iface, host);
}
if (match)
return;
- dns_init_answer();
- service_send_a(u);
- dns_send_answer(u, service_name("local"));
+ service_reply_a(iface, TYPE_A);
}
void
-service_announce_services(struct uloop_fd *u, const char *service)
+service_announce_services(struct interface *iface, const char *service)
{
struct service *s;
int tcp = 1;
continue;
s->t = 0;
dns_init_answer();
- service_send_ptr_c(u, s->service);
+ service_add_ptr(s->service);
if (tcp)
- dns_send_answer(u, sdtcp);
+ dns_send_answer(iface, sdtcp);
else
- dns_send_answer(u, sdudp);
- service_reply(u, s->service);
+ dns_send_answer(iface, sdudp);
+ service_reply(iface, s->service);
}
}
void
-service_announce(struct uloop_fd *u)
+service_announce(struct interface *iface)
{
- service_announce_services(u, sdudp);
- service_announce_services(u, sdtcp);
+ service_announce_services(iface, sdudp);
+ service_announce_services(iface, sdtcp);
}
static void
void
service_init(void)
{
- if (!hostname)
- hostname = get_hostname();
+ get_hostname();
vlist_update(&services);
service_load("/tmp/run/mdnsd/*");
service_cleanup(void)
{
vlist_flush(&services);
+ blob_buf_free(&b);
}