openjpeg/applications/jpip/opj_server/session_manager.c

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/*
* $Id: session_manager.c 44 2011-02-15 12:32:29Z kaori $
*
* Copyright (c) 2002-2011, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
* Copyright (c) 2002-2011, Professor Benoit Macq
* Copyright (c) 2010-2011, Kaori Hagihara
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* 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.
*/
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include "session_manager.h"
#ifdef SERVER
#include "fcgi_stdio.h"
#define logstream FCGI_stdout
#else
#define FCGI_stdout stdout
#define FCGI_stderr stderr
#define logstream stderr
#endif //SERVER
sessionlist_param_t * gene_sessionlist()
{
sessionlist_param_t *sessionlist;
sessionlist = (sessionlist_param_t *)malloc( sizeof(sessionlist_param_t));
sessionlist->first = NULL;
sessionlist->last = NULL;
return sessionlist;
}
session_param_t * gene_session( sessionlist_param_t *sessionlist)
{
session_param_t *session;
session = (session_param_t *)malloc( sizeof(session_param_t));
session->channellist = gene_channellist();
session->targetlist = gene_targetlist();
session->next = NULL;
if( sessionlist->first) // there are one or more entries
sessionlist->last->next = session;
else // first entry
sessionlist->first = session;
sessionlist->last = session;
return session;
}
bool search_session_and_channel( char cid[],
sessionlist_param_t *sessionlist,
session_param_t **foundsession,
channel_param_t **foundchannel)
{
*foundsession = sessionlist->first;
while( *foundsession != NULL){
*foundchannel = (*foundsession)->channellist->first;
while( *foundchannel != NULL){
if( strcmp( cid, (*foundchannel)->cid) == 0)
return true;
*foundchannel = (*foundchannel)->next;
}
*foundsession = (*foundsession)->next;
}
fprintf( FCGI_stdout, "Status: 503\r\n");
fprintf( FCGI_stdout, "Reason: Channel %s not found\r\n", cid);
return false;
}
void insert_target_into_session( session_param_t *session, target_param_t *target)
{
if(!target)
return;
#ifndef SERVER
fprintf( logstream, "local log: insert target into session %p\n", (void *)session);
#endif
if( session->targetlist->first != NULL)
session->targetlist->last->next = target;
else
session->targetlist->first = target;
session->targetlist->last = target;
}
bool delete_session( session_param_t **session, sessionlist_param_t *sessionlist)
{
session_param_t *ptr;
if( *session == NULL)
return false;
if( *session == sessionlist->first)
sessionlist->first = (*session)->next;
else{
ptr = sessionlist->first;
while( ptr->next != *session)
ptr = ptr->next;
ptr->next = (*session)->next;
if( *session == sessionlist->last)
sessionlist->last = ptr;
}
delete_channellist( &((*session)->channellist));
delete_targetlist ( &((*session)->targetlist));
#ifndef SERVER
fprintf( logstream, "local log: session: %p deleted!\n", (void *)(*session));
#endif
free( *session);
return true;
}
void delete_sessionlist( sessionlist_param_t **sessionlist)
{
session_param_t *sessionPtr, *sessionNext;
sessionPtr = (*sessionlist)->first;
while( sessionPtr != NULL){
sessionNext=sessionPtr->next;
delete_channellist( &(sessionPtr->channellist));
delete_targetlist ( &(sessionPtr->targetlist));
#ifndef SERVER
fprintf( logstream, "local log: session: %p deleted!\n", (void *)sessionPtr);
#endif
free( sessionPtr);
sessionPtr=sessionNext;
}
(*sessionlist)->first = NULL;
(*sessionlist)->last = NULL;
free(*sessionlist);
}
void print_allsession( sessionlist_param_t *sessionlist)
{
session_param_t *ptr;
int i=0;
fprintf( logstream, "SESSIONS info:\n");
ptr = sessionlist->first;
while( ptr != NULL){
fprintf( logstream, "session No.%d\n", i++);
print_allchannel( ptr->channellist);
print_alltarget( ptr->targetlist);
ptr=ptr->next;
}
}