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Send a lookip NOT_FOUND reply if a lookup yields no results

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This commit is contained in:
Martin Willi 2012-10-09 11:16:07 +02:00
parent f6fb2b98e9
commit 9d422bb1b0
3 changed files with 32 additions and 11 deletions
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5
src/libcharon/plugins/lookip/lookip.c
View File

@ -102,6 +102,9 @@ static int receive(int fd, int block)
case LOOKIP_ENTRY:
label = "lookup:";
break;
case LOOKIP_NOT_FOUND:
label = "not found:";
break;
case LOOKIP_NOTIFY_UP:
label = "up:";
break;
@ -117,7 +120,7 @@ static int receive(int fd, int block)
resp.id[sizeof(resp.id) - 1] = '\0';
resp.name[sizeof(resp.name) - 1] = '\0';
printf("%-8s %16s %16s %20s %s\n",
printf("%-12s %16s %16s %20s %s\n",
label, resp.vip, resp.ip, resp.name, resp.id);
}
}

20
src/libcharon/plugins/lookip/lookip_msg.h
View File

@ -40,19 +40,21 @@ enum {
/** request a dump of all entries */
LOOKIP_DUMP = 1,
/** lookup a specific virtual IP */
LOOKIP_LOOKUP = 2,
LOOKIP_LOOKUP,
/** reply message for DUMP and LOOKUP */
LOOKIP_ENTRY = 3,
LOOKIP_ENTRY,
/** reply message for LOOKUP if no such IP found */
LOOKIP_NOT_FOUND,
/** register for notifications about new virtual IPs */
LOOKIP_REGISTER_UP = 4,
LOOKIP_REGISTER_UP,
/** register for notifications about virtual IPs released */
LOOKIP_REGISTER_DOWN = 5,
LOOKIP_REGISTER_DOWN,
/** notify reply message for REGISTER_UP */
LOOKIP_NOTIFY_UP = 6,
LOOKIP_NOTIFY_UP,
/** notify reply message for REGISTER_DOWN */
LOOKIP_NOTIFY_DOWN = 7,
LOOKIP_NOTIFY_DOWN,
/** end of request batch */
LOOKIP_END = 8,
LOOKIP_END,
};
/**
@ -72,7 +74,9 @@ struct lookip_request_t {
/**
* Response message sent to client.
*
* Valid response message types are ENTRY and NOTIFY_UP/DOWN.
* Valid response message types are ENTRY, NOT_FOUND and NOTIFY_UP/DOWN.
*
* All fields are set in all messages, except in NOT_FOUND: Only vip is set.
*/
struct lookip_response_t {
/** response message type */

16
src/libcharon/plugins/lookip/lookip_socket.c
View File

@ -188,6 +188,7 @@ static void query(private_lookip_socket_t *this, int fd, lookip_request_t *req)
.type = LOOKIP_ENTRY,
};
host_t *vip = NULL;
int matches = 0;
if (req)
{ /* lookup */
@ -195,10 +196,23 @@ static void query(private_lookip_socket_t *this, int fd, lookip_request_t *req)
vip = host_create_from_string(req->vip, 0);
if (vip)
{
this->listener->lookup(this->listener, vip,
matches = this->listener->lookup(this->listener, vip,
(void*)listener_cb, &entry);
vip->destroy(vip);
}
if (matches == 0)
{
lookip_response_t resp = {
.type = LOOKIP_NOT_FOUND,
};
snprintf(resp.vip, sizeof(resp.vip), "%s", req->vip);
if (send(fd, &resp, sizeof(resp), 0) < 0)
{
DBG1(DBG_CFG, "sending lookip not-found failed: %s",
strerror(errno));
}
}
}
else
{ /* dump */