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/*
* Test for basic lbcd server functionality.
*
* Written by Russ Allbery <eagle@eyrie.org>
* Copyright 2013, 2014
* The Board of Trustees of the Leland Stanford Junior University
*
* See LICENSE for licensing terms.
*/
#include <config.h>
#include <portable/socket.h>
#include <portable/system.h>
#include <time.h>
#include <server/protocol.h>
#include <tests/tap/basic.h>
#include <tests/tap/lbcd.h>
#include <util/network.h>
/*
* Check a reply packet given a request packet. We don't check the actual
* values of most of the parameters other than insuring that they're basically
* sane (load below 200, for instance). Takes the request, the reply, the
* reply size, and a short string to use to name this test.
*/
static void
is_sane_reply(struct lbcd_request *request, struct lbcd_reply *reply,
size_t size, const char *name)
{
int services, protocol;
size_t expected;
time_t now;
/* Determine the expected number of services and size of response. */
protocol = ntohs(request->h.version);
services = (protocol == 3) ? ntohs(request->h.status) : 0;
expected = sizeof(*reply);
expected -= sizeof(reply->weights[0]) * (LBCD_MAX_SERVICES - services);
/* Check the size of the reply. */
is_int(expected, size, "Reply to %s is correct size", name);
/* Check the reply header. */
is_int(ntohs(request->h.version), ntohs(reply->h.version),
"...and has correct version");
is_int(ntohs(request->h.id), ntohs(reply->h.id),
"...and has correct id");
is_int(LBCD_OP_LBINFO, ntohs(reply->h.op),
"...and has correct operation");
is_int(LBCD_STATUS_OK, ntohs(reply->h.status),
"...and has correct status");
/* Check the general system information. */
now = time(NULL);
ok((time_t) ntohl(reply->boot_time) > 946713600,
"...boot time later than 2000-01-01");
ok((time_t) ntohl(reply->boot_time) < now,
"...boot time before the current time");
ok(labs((time_t) ntohl(reply->current_time) - now) < 2,
"...current time within two seconds");
ok((time_t) ntohl(reply->user_mtime) < now,
"...user mtime before the current time");
ok(ntohs(reply->l1) < 20000, "...1 minute load less than 200");
ok(ntohs(reply->l5) < 20000, "...1 minute load less than 200");
ok(ntohs(reply->l15) < 20000, "...1 minute load less than 200");
ok(ntohs(reply->uniq_users) <= ntohs(reply->tot_users),
"...unique users <= total users");
ok(reply->on_console == 0 || reply->on_console == 1,
"...on_console is either 0 or 1");
is_int(0, reply->reserved, "...reserved field is zero");
ok(reply->tmp_full <= 100, "...tmp_full <= 100");
ok(reply->tmpdir_full <= 100, "...tmpdir_full <= 100");
is_int(0, reply->pad, "...padding field is zero");
is_int(services, reply->services, "...correct number of extra services");
/* For protocol three replies, check the first service. */
if (protocol == 3)
is_int(200, ntohl(reply->weights[0].host_incr),
"...default service increment is correct");
}
int
main(void)
{
socket_type fd;
struct sockaddr_in sin;
size_t size;
ssize_t result;
struct lbcd_reply reply;
struct lbcd_request request;
/* Declare a plan. */
plan(65);
/* Start the lbcd daemon, allowing load and rr services. */
lbcd_start("-a", "load", "-a", "rr", NULL);
/* Set up our client socket. */
fd = network_client_create(PF_INET, SOCK_DGRAM, "127.0.0.1");
if (fd == INVALID_SOCKET)
sysbail("cannot create client socket");
memset(&sin, 0, sizeof(sin));
sin.sin_family = AF_INET;
sin.sin_port = htons(14330);
sin.sin_addr.s_addr = htonl(0x7f000001UL);
if (connect(fd, (struct sockaddr *) &sin, sizeof(sin)) < 0)
sysbail("cannot connect client socket");
/* Send a simple version three query and get the reply. */
memset(&request, 0, sizeof(request));
request.h.version = htons(3);
request.h.id = htons(10);
request.h.op = htons(LBCD_OP_LBINFO);
result = send(fd, &request, sizeof(struct lbcd_header), 0);
if (result != (ssize_t) sizeof(struct lbcd_header))
sysbail("cannot send simple version 3 query");
memset(&reply, 0, sizeof(reply));
result = recv(fd, &reply, sizeof(reply), 0);
/* Check that the reply is what we expect. */
is_sane_reply(&request, &reply, result, "simple protocol three query");
/* Send a version two query and get the reply. */
request.h.version = htons(2);
request.h.id = htons(20);
request.h.status = htons(200);
result = send(fd, &request, sizeof(struct lbcd_header), 0);
if (result != (ssize_t) sizeof(struct lbcd_header))
sysbail("cannot send version 2 query");
memset(&reply, 0, sizeof(reply));
result = recv(fd, &reply, sizeof(reply), 0);
/* Check that the reply is what we expect. */
is_sane_reply(&request, &reply, result, "protocol two query");
/*
* Send a more complex version three query with three requested services:
* default, which should always be allowed, load, which should match
* default, and rr.
*/
request.h.version = htons(3);
request.h.status = htons(3);
strlcpy(request.names[0], "default", sizeof(request.names[0]));
strlcpy(request.names[1], "load", sizeof(request.names[0]));
strlcpy(request.names[2], "rr", sizeof(request.names[0]));
size = sizeof(struct lbcd_header) + 3 * sizeof(lbcd_name_type);
result = send(fd, &request, size, 0);
if (result != (ssize_t) size)
sysbail("cannot send complex version 3 query");
memset(&reply, 0, sizeof(reply));
result = recv(fd, &reply, sizeof(reply), 0);
/* Check that the reply is what we expect. */
is_sane_reply(&request, &reply, result, "complex protocol three query");
is_int(ntohl(reply.weights[0].host_weight),
ntohl(reply.weights[1].host_weight),
"...default service weight matches first weight");
is_int(ntohl(reply.weights[0].host_incr),
ntohl(reply.weights[1].host_incr),
"...default service increment matches first increment");
is_int(ntohl(reply.weights[0].host_weight),
ntohl(reply.weights[2].host_weight),
"...load service weight matches first weight");
is_int(ntohl(reply.weights[0].host_incr),
ntohl(reply.weights[2].host_incr),
"...load service increment matches first increment");
is_int(1, ntohl(reply.weights[3].host_weight),
"...rr service weight is 1");
is_int(1, ntohl(reply.weights[3].host_incr),
"...rr service increment is 1");
/* All done. Clean up and return. */
close(fd);
return 0;
}
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