ossp-pkg/xds/regression-tests/xds-engine-restart.c
1.2
/*
XDS - OSSP Extensible Data Serialization Library
Copyright (c) 2001 The OSSP Project (http://www.ossp.org/)
Copyright (c) 2001 Cable & Wireless Deutschland (http://www.cw.com/de/)
This file is part of OSSP XDS, an extensible data serialization
library which can be found at http://www.ossp.com/pkg/xds/.
Permission to use, copy, modify, and distribute this software for
any purpose with or without fee is hereby granted, provided that
the above copyright notice and this permission notice appear in all
copies.
THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 AUTHORS AND COPYRIGHT HOLDERS AND THEIR
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.
*/
#include <stdio.h>
#include <string.h>
#include "../internal.h"
static int dummy_engine(xds_t* xds, void* engine_context,
void* buffer, size_t buffer_size, size_t* used_buffer_size,
va_list* args)
{
if (xds == NULL)
{
printf("XDS context isn't passed through to registered engine.\n");
exit(1);
}
if (engine_context != (void*)42)
{
printf("Engine context isn't passed through to registered engine.\n");
exit(1);
}
if (buffer == NULL)
{
printf("Buffer passed to engine is NULL.\n");
exit(1);
}
if (buffer_size == 0)
{
printf("Buffer size passed to engine is zero!\n");
exit(1);
}
if (used_buffer_size == NULL)
{
printf("used_buffer_size pointer passed to engine is NULL!\n");
exit(1);
}
if (args == NULL)
{
printf("args pointer passed to engine is NULL!\n");
exit(1);
}
if (va_arg(*args, int) != 42)
{
printf("The varadic argument is not what the engine expected!\n");
exit(1);
}
if (buffer_size < 64)
return XDS_ERR_OVERFLOW;
else
*used_buffer_size = 64;
return XDS_OK;
}
int main()
{
xds_t* xds;
char* buffer;
size_t buffer_size;
/* Create an XDS context and set a buffer that's too small for the
first encode() call. Then call encode() with two parameters:
the one the engine is expecting and a different one after that.
The engine will complain if it sees the second value -- what
would mean that the args parameter was not resetted to the
original value before the engine is restarted after buffer
enlargement. */
xds = xds_init(XDS_ENCODE);
if (xds == NULL)
{
printf("Failed to initialize XDS context.\n");
return 1;
}
if (xds_register(xds, "int", &dummy_engine, (void*)42) != XDS_OK)
{
printf("Failed to register my encoding engines.\n");
return 1;
}
buffer = malloc(32);
if (buffer == NULL)
{
printf("malloc() failed!\n");
return 1;
}
buffer_size = 32;
if (xds_setbuffer(xds, XDS_GIFT, buffer, buffer_size) != XDS_OK)
{
printf("xds_setbuffer() failed!\n");
return 1;
}
if (xds_encode(xds, "int", 42, 13) != XDS_OK)
{
printf("xds_encode() failed!");
return 1;
}
xds_destroy(xds);
return 0;
}
