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/* nbdkit
* Copyright Red Hat
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* * Neither the name of Red Hat nor the names of its contributors may be
* used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/* This is a test of recovering from broken redirects to a mirror
* service. See the following bug for background:
* https://bugzilla.redhat.com/show_bug.cgi?id=2013000
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <stdint.h>
#include <inttypes.h>
#include <string.h>
#include <unistd.h>
#include <libnbd.h>
#include "cleanup.h"
#include "web-server.h"
#include "requires.h"
#include "test.h"
int
main (int argc, char *argv[])
{
const char *sockpath;
CLEANUP_FREE char *usp_param = NULL;
int i, j;
char state;
struct nbd_handle *nbd = NULL;
#ifndef HAVE_CURLOPT_UNIX_SOCKET_PATH
skip_because ("curl does not support CURLOPT_UNIX_SOCKET_PATH");
#endif
requires_exists ("disk");
sockpath = web_server ("disk" /* not used but must be set */, NULL, false);
if (sockpath == NULL) {
fprintf (stderr, "%s: could not start web server thread\n", argv[0]);
exit (EXIT_FAILURE);
}
/* Start nbdkit. */
if (asprintf (&usp_param, "unix-socket-path=%s", sockpath) == -1) {
perror ("asprintf");
exit (EXIT_FAILURE);
}
if (test_start_nbdkit ("--filter=retry-request",
"curl", usp_param, "http://localhost/mirror",
"retry-request-delay=1",
NULL) == -1)
exit (EXIT_FAILURE);
/* The way the test works is we fetch the magic "/mirror" path (see
* web-server.c). This redirects to /mirror1, /mirror2, /mirror3
* round robin on each request. /mirror1 returns all 1's, /mirror2
* returns all 2's, and /mirror3 returns a 404 error. The 404 error
* should be transparently skipped by the filter, so we should see
* alternating 1's and 2's buffers.
*/
for (j = 0; j < 5; ++j) {
/* Connect to the NBD socket. */
nbd = nbd_create ();
if (nbd == NULL)
goto nbd_error;
if (nbd_connect_unix (nbd, sock /* NBD socket */) == -1)
goto nbd_error;
state = 0;
for (i = 0; i < 7 /* not divisible by 2 or 3 */; ++i) {
char buf[512];
if (nbd_pread (nbd, buf, sizeof buf, 0, 0) == -1)
goto nbd_error;
if (state == 0) {
/* First time, set the state to 1 or 2 depending on what
* we just read.
*/
state = buf[0];
}
else {
/* Subsequent times, check that the mirror flipped to the
* other state.
*/
if (buf[0] != state || buf[1] != state || buf[511] != state) {
fprintf (stderr, "%s: unexpected state: expecting %d but found %d\n",
argv[0], (int) state, (int) buf[0]);
nbd_close (nbd);
exit (EXIT_FAILURE);
}
}
state++;
if (state == 3)
state = 1;
}
nbd_close (nbd);
}
exit (EXIT_SUCCESS);
nbd_error:
fprintf (stderr, "%s: %s\n", argv[0], nbd_get_error ());
if (nbd) nbd_close (nbd);
exit (EXIT_FAILURE);
}
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