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*** 0 ****
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+ /*
+ 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 <assert.h>
+ #include "../internal.h"
+
+ static int dummy_engine(xds_t* xds, void* engine_context, void* buffer, size_t buffer_size, va_list* args)
+ {
+ assert(xds != NULL);
+ assert(buffer != NULL);
+ assert(buffer_size != 0);
+ if (buffer_size >= 64)
+ memset(buffer, 'a', 64);
+ return 64;
+ }
+
+ int main()
+ {
+ xds_t* xds;
+ char* buffer;
+ size_t buffer_size;
+
+ /* Create XDS context. */
+
+ xds = xds_init(XDS_ENCODE);
+ if (xds == NULL)
+ {
+ printf("Failed to initialize XDS context.\n");
+ return 1;
+ }
+
+ /* Register the callback. */
+
+ if (xds_register(xds, "dummy", &dummy_engine, NULL) != XDS_OK)
+ {
+ printf("Failed to register my encoding engine.\n");
+ return 1;
+ }
+
+ /* Give the library a buffer of 64 byte, call the engine once, get
+ the buffer back and see whether it has been enlarged or not. */
+
+ buffer = malloc(64);
+ if (buffer == NULL)
+ {
+ printf("Failed to allocate my memory.\n");
+ return 1;
+ }
+ buffer_size = 64;
+ if (xds_setbuffer(xds, XDS_GIFT, buffer, buffer_size) != XDS_OK)
+ {
+ printf("xds_setbuffer() failed!\n");
+ return 1;
+ }
+ if (xds_encode(xds, "dummy") != XDS_OK)
+ {
+ printf("xds_encode() failed!\n");
+ return 1;
+ }
+ if (xds_getbuffer(xds, XDS_GIFT, (void**)&buffer, &buffer_size) != XDS_OK)
+ {
+ printf("xds_getbuffer() failed!\n");
+ return 1;
+ }
+ if (buffer_size == 64)
+ {
+ printf("xds_encode() did not enlarge the buffer after processing the callback\n");
+ printf("even though all capacity was used up!\n");
+ return 1;
+ }
+
+ /* Loan the library a buffer we own, call the engine once to
+ exceed the buffer's capacity and check, whether the library
+ returns the correct error code. */
+
+ buffer = malloc(32);
+ if (buffer == NULL)
+ {
+ printf("Failed to allocate my memory.\n");
+ return 1;
+ }
+ buffer_size = 32;
+ if (xds_setbuffer(xds, XDS_LOAN, buffer, buffer_size) != XDS_OK)
+ {
+ printf("xds_setbuffer() failed!\n");
+ return 1;
+ }
+ if (xds_encode(xds, "dummy") != XDS_ERR_OVERFLOW)
+ {
+ printf("xds_encode() was supposed to fail with XDS_ERR_OVERFLOW!\n");
+ return 1;
+ }
+ free(buffer);
+
+ /* Clean up. */
+
+ xds_destroy(xds);
+
+ /* Everything went fine. */
+
+ return 0;
+ }
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