Esempio n. 1
0
static void
apply_entry(kadm5_server_context *server_context,
	    uint32_t ver,
	    time_t timestamp,
	    enum kadm_ops op,
	    uint32_t len,
	    krb5_storage *sp,
	    void *ctx)
{
    struct replay_options *opt = ctx;
    krb5_error_code ret;

    if((opt->start_version_integer != -1 && ver < (uint32_t)opt->start_version_integer) ||
       (opt->end_version_integer != -1 && ver > (uint32_t)opt->end_version_integer)) {
	/* XXX skip this entry */
	krb5_storage_seek(sp, len, SEEK_CUR);
	return;
    }
    printf ("ver %u... ", ver);
    fflush (stdout);

    ret = kadm5_log_replay (server_context,
			    op, ver, len, sp);
    if (ret)
	krb5_warn (server_context->context, ret, "kadm5_log_replay");

    printf ("done\n");
}
Esempio n. 2
0
static void
receive_loop (krb5_context context,
	      krb5_storage *sp,
	      kadm5_server_context *server_context)
{
    int ret;
    off_t left, right;
    void *buf;
    int32_t vers, vers2;
    ssize_t sret;

    /*
     * Seek to the current version of the local database.
     */
    do {
	int32_t len, timestamp, tmp;
	enum kadm_ops op;

	if(krb5_ret_int32 (sp, &vers) != 0)
	    return;
	krb5_ret_int32 (sp, &timestamp);
	krb5_ret_int32 (sp, &tmp);
	op = tmp;
	krb5_ret_int32 (sp, &len);
	if (vers <= server_context->log_context.version)
	    krb5_storage_seek(sp, len + 8, SEEK_CUR);
    } while(vers <= server_context->log_context.version);

    /*
     * Read up rest of the entires into the memory...
     */
    left  = krb5_storage_seek (sp, -16, SEEK_CUR);
    right = krb5_storage_seek (sp, 0, SEEK_END);
    buf = malloc (right - left);
    if (buf == NULL && (right - left) != 0)
	krb5_errx (context, 1, "malloc: no memory");

    /*
     * ...and then write them out to the on-disk log.
     */
    krb5_storage_seek (sp, left, SEEK_SET);
    krb5_storage_read (sp, buf, right - left);
    sret = write (server_context->log_context.log_fd, buf, right-left);
    if (sret != right - left)
	krb5_err(context, 1, errno, "Failed to write log to disk");
    ret = fsync (server_context->log_context.log_fd);
    if (ret)
	krb5_err(context, 1, errno, "Failed to sync log to disk");
    free (buf);

    /*
     * Go back to the startpoint and start to commit the entires to
     * the database.
     */
    krb5_storage_seek (sp, left, SEEK_SET);

    for(;;) {
	int32_t len, len2, timestamp, tmp;
	off_t cur, cur2;
	enum kadm_ops op;

	if(krb5_ret_int32 (sp, &vers) != 0)
	    break;
	ret = krb5_ret_int32 (sp, &timestamp);
	if (ret) krb5_errx(context, 1, "entry %ld: too short", (long)vers);
	ret = krb5_ret_int32 (sp, &tmp);
	if (ret) krb5_errx(context, 1, "entry %ld: too short", (long)vers);
	op = tmp;
	ret = krb5_ret_int32 (sp, &len);
	if (ret) krb5_errx(context, 1, "entry %ld: too short", (long)vers);
	if (len < 0)
	    krb5_errx(context, 1, "log is corrupted, "
		      "negative length of entry version %ld: %ld",
		      (long)vers, (long)len);
	cur = krb5_storage_seek(sp, 0, SEEK_CUR);

	krb5_warnx (context, "replaying entry %d", (int)vers);

	ret = kadm5_log_replay (server_context,
				op, vers, len, sp);
	if (ret) {
	    const char *s = krb5_get_error_message(server_context->context, ret);
	    krb5_warnx (context,
			"kadm5_log_replay: %ld. Lost entry entry, "
			"Database out of sync ?: %s (%d)",
			(long)vers, s ? s : "unknown error", ret);
	    krb5_free_error_message(context, s);
	}

	{
	    /*
	     * Make sure the krb5_log_replay does the right thing wrt
	     * reading out data from the sp.
	     */
	    cur2 = krb5_storage_seek(sp, 0, SEEK_CUR);
	    if (cur + len != cur2)
		krb5_errx(context, 1,
			  "kadm5_log_reply version: %ld didn't read the whole entry",
			  (long)vers);
	}

	if (krb5_ret_int32 (sp, &len2) != 0)
	    krb5_errx(context, 1, "entry %ld: postamble too short", (long)vers);
	if(krb5_ret_int32 (sp, &vers2) != 0)
	    krb5_errx(context, 1, "entry %ld: postamble too short", (long)vers);

	if (len != len2)
	    krb5_errx(context, 1, "entry %ld: len != len2", (long)vers);
	if (vers != vers2)
	    krb5_errx(context, 1, "entry %ld: vers != vers2", (long)vers);
    }

    /*
     * Update version
     */

    server_context->log_context.version = vers;
}