data_sync_common.c
/*
* libsyncml - A syncml protocol implementation
* Copyright (C) 2008 Michael Bell <michael.bell@opensync.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include "data_sync_common.h"
#include "libsyncml/syncml_internals.h"
#include "libsyncml/sml_error_internals.h"
#include "data_sync_devinf.h"
SmlBool smlDataSyncIsTimestamp(const char *anchor, SmlBool timestampDefault)
{
smlTrace(TRACE_ENTRY, "%s(%s, %d)", __func__, VA_STRING(anchor), timestampDefault);
if (anchor == NULL || strlen(anchor) < 1)
{
/* there is no anchor, so the default is sent */
smlTrace(TRACE_EXIT, "%s - default", __func__);
return timestampDefault;
} else {
/* last is set in the anchor database */
if (strstr(anchor, "Z")) {
/* anchor is a timestamp */
smlTrace(TRACE_EXIT, "%s - TRUE", __func__);
return TRUE;
} else {
/* last is a number */
smlTrace(TRACE_EXIT, "%s - FALSE", __func__);
return FALSE;
}
}
}
char *smlDataSyncGetNextAnchor(
SmlDataSyncDatastore *datastore,
const char *last,
SmlError **error)
{
smlTrace(TRACE_ENTRY, "%s(%s)", __func__, VA_STRING(last));
CHECK_ERROR_REF
SmlBool use_timestamp = TRUE;
char *next = NULL;
use_timestamp = smlDataSyncIsTimestamp(last,
datastore->dsObject->useTimestampAnchor);
smlTrace(TRACE_INTERNAL, "%s: use timestamp is %d", __func__, use_timestamp);
if (use_timestamp)
{
/* It is necessary to be sure that the remote device supports UTC. */
smlTrace(TRACE_INTERNAL,
"%s: session %p, localtime %d, remoteDevInf %p",
__func__,
datastore->dsObject->session,
datastore->dsObject->onlyLocaltime,
datastore->dsObject->remoteDevInf);
if (datastore->dsObject->session &&
!datastore->dsObject->onlyLocaltime &&
!datastore->dsObject->remoteDevInf &&
!smlDataSyncManageDevInf(datastore->dsObject, FALSE, error))
{
goto error;
}
next = smlTryMalloc0(sizeof(char)*17, error);
if (!next)
goto error;
time_t htime = time(NULL);
if (datastore->dsObject->onlyLocaltime) {
smlTrace(TRACE_INTERNAL, "%s: use localtime", __func__);
strftime(next, 17, "%Y%m%dT%H%M%SZ", localtime(&htime));
} else {
smlTrace(TRACE_INTERNAL, "%s: use UTC", __func__);
strftime(next, 17, "%Y%m%dT%H%M%SZ", gmtime(&htime));
}
} else {
if (last == NULL)
{
next = g_strdup("1");
} else {
unsigned long count = strtoul(last, NULL, 10);
count++;
next = g_strdup_printf("%lu", count);
}
}
smlTrace(TRACE_EXIT, "%s(%s)", __func__, VA_STRING(next));
return next;
error:
smlTrace(TRACE_EXIT_ERROR, "%s - %s", __func__, smlErrorPrint(error));
return NULL;
}
SmlDataSyncDatastore
This object represents an OMA DS datastore.
Definition: data_sync.h:93
smlErrorPrint
const char * smlErrorPrint(SmlError **error)
Returns the message of the error.
Definition: sml_error.c:299
smlTrace
void smlTrace(SmlTraceType type, const char *message,...)
Used for tracing the application.
Definition: sml_support.c:120
smlTryMalloc0
void * smlTryMalloc0(long n_bytes, SmlError **error)
Safely mallocs.
Definition: sml_support.c:335
SmlError
Represent an error.
Definition: sml_error_internals.h:29