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/*
* Copyright (C) 2014 Red Hat Inc.
*
* 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.
* * The names of contributors to this software may not be
* used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 THE
* COPYRIGHT OWNER 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.
*
* Author: Stef Walter <stefw@redhat.com>
*/
#include "config.h"
#include "buffer.h"
#include "compat.h"
#include "debug.h"
#include "message.h"
#include "rpc.h"
#include "remote.h"
#include "virtual.h"
#include <assert.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
int
p11_kit_remote_serve_module (CK_FUNCTION_LIST *module,
int in_fd,
int out_fd)
{
p11_rpc_status status;
unsigned char version;
p11_virtual virt;
p11_buffer options;
p11_buffer buffer;
size_t state;
int ret = 1;
int code;
return_val_if_fail (module != NULL, 1);
p11_buffer_init (&options, 0);
p11_buffer_init (&buffer, 0);
p11_virtual_init (&virt, &p11_virtual_base, module, NULL);
switch (read (in_fd, &version, 1)) {
case 0:
goto out;
case 1:
if (version != 0) {
p11_message ("unspported version received: %d", (int)version);
goto out;
}
break;
default:
p11_message_err (errno, "couldn't read credential byte");
goto out;
}
version = 0;
switch (write (out_fd, &version, out_fd)) {
case 1:
break;
default:
p11_message_err (errno, "couldn't write credential byte");
goto out;
}
status = P11_RPC_OK;
while (status == P11_RPC_OK) {
state = 0;
code = 0;
do {
status = p11_rpc_transport_read (in_fd, &state, &code,
&options, &buffer);
} while (status == P11_RPC_AGAIN);
switch (status) {
case P11_RPC_OK:
break;
case P11_RPC_EOF:
ret = 0;
continue;
case P11_RPC_AGAIN:
assert_not_reached ();
case P11_RPC_ERROR:
p11_message_err (errno, "failed to read rpc message");
goto out;
}
if (!p11_rpc_server_handle (&virt.funcs, &buffer, &buffer)) {
p11_message ("unexpected error handling rpc message");
goto out;
}
state = 0;
options.len = 0;
do {
status = p11_rpc_transport_write (out_fd, &state, code,
&options, &buffer);
} while (status == P11_RPC_AGAIN);
switch (status) {
case P11_RPC_OK:
break;
case P11_RPC_EOF:
case P11_RPC_AGAIN:
assert_not_reached ();
case P11_RPC_ERROR:
p11_message_err (errno, "failed to write rpc message");
goto out;
}
}
out:
p11_buffer_uninit (&buffer);
p11_buffer_uninit (&options);
p11_virtual_uninit (&virt);
return ret;
}
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