openjpeg/applications/jpip/libopenjpip/target_manager.c

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/*
* $Id: target_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 <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
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#include <time.h>
#include "target_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
targetlist_param_t * gene_targetlist()
{
targetlist_param_t *targetlist;
targetlist = (targetlist_param_t *)malloc( sizeof(targetlist_param_t));
targetlist->first = NULL;
targetlist->last = NULL;
return targetlist;
}
/**
* open jp2 format image file
*
* @param[in] filename file name (.jp2)
* @return file descriptor
*/
int open_jp2file( char filename[]);
target_param_t * gene_target( targetlist_param_t *targetlist, char *targetname)
{
target_param_t *target;
int fd;
index_param_t *jp2idx;
static int last_csn = 0;
if( targetname[0]=='\0'){
fprintf( FCGI_stderr, "Error: exception, no targetname in gene_target()\n");
return NULL;
}
if((fd = open_jp2file( targetname)) == -1){
fprintf( FCGI_stdout, "Status: 404\r\n");
return NULL;
}
if( !(jp2idx = parse_jp2file( fd))){
fprintf( FCGI_stdout, "Status: 501\r\n");
return NULL;
}
target = (target_param_t *)malloc( sizeof(target_param_t));
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snprintf( target->tid, MAX_LENOFTID, "%x-%x", (unsigned int)time(NULL), (unsigned int)rand());
strcpy( target->filename, targetname);
target->fd = fd;
target->csn = last_csn++;
target->codeidx = jp2idx;
target->num_of_use = 0;
target->next=NULL;
if( targetlist->first) // there are one or more entries
targetlist->last->next = target;
else // first entry
targetlist->first = target;
targetlist->last = target;
#ifndef SERVER
fprintf( logstream, "local log: target %s generated\n", targetname);
#endif
return target;
}
void refer_target( target_param_t *reftarget, target_param_t **ptr)
{
*ptr = reftarget;
reftarget->num_of_use++;
}
void unrefer_target( target_param_t *target)
{
target->num_of_use--;
}
void delete_target( target_param_t **target)
{
close( (*target)->fd);
delete_index ( &(*target)->codeidx);
#ifndef SERVER
fprintf( logstream, "local log: target: %s deleted\n", (*target)->filename);
#endif
free(*target);
}
void delete_target_in_list( target_param_t **target, targetlist_param_t *targetlist)
{
target_param_t *ptr;
if( *target == targetlist->first)
targetlist->first = (*target)->next;
else{
ptr = targetlist->first;
while( ptr->next != *target){
ptr=ptr->next;
}
ptr->next = (*target)->next;
if( *target == targetlist->last)
targetlist->last = ptr;
}
delete_target( target);
}
void delete_targetlist(targetlist_param_t **targetlist)
{
target_param_t *targetPtr, *targetNext;
targetPtr = (*targetlist)->first;
while( targetPtr != NULL){
targetNext=targetPtr->next;
delete_target( &targetPtr);
targetPtr=targetNext;
}
free( *targetlist);
}
void print_target( target_param_t *target)
{
fprintf( logstream, "target:\n");
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fprintf( logstream, "\t tid=%s\n", target->tid);
fprintf( logstream, "\t csn=%d\n", target->csn);
fprintf( logstream, "\t target=%s\n\n", target->filename);
}
void print_alltarget( targetlist_param_t *targetlist)
{
target_param_t *ptr;
ptr = targetlist->first;
while( ptr != NULL){
print_target( ptr);
ptr=ptr->next;
}
}
target_param_t * search_target( char targetname[], targetlist_param_t *targetlist)
{
target_param_t *foundtarget;
foundtarget = targetlist->first;
while( foundtarget != NULL){
if( strcmp( targetname, foundtarget->filename) == 0)
return foundtarget;
foundtarget = foundtarget->next;
}
return NULL;
}
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target_param_t * search_targetBytid( char tid[], targetlist_param_t *targetlist)
{
target_param_t *foundtarget;
foundtarget = targetlist->first;
while( foundtarget != NULL){
if( strcmp( tid, foundtarget->tid) == 0)
return foundtarget;
foundtarget = foundtarget->next;
}
return NULL;
}
int open_jp2file( char filename[])
{
int fd;
char *data;
if( (fd = open( filename, O_RDONLY)) == -1){
fprintf( FCGI_stdout, "Reason: Target %s not found\r\n", filename);
return -1;
}
// Check resource is a JP family file.
if( lseek( fd, 0, SEEK_SET)==-1){
close(fd);
fprintf( FCGI_stdout, "Reason: Target %s broken (lseek error)\r\n", filename);
return -1;
}
data = (char *)malloc( 12); // size of header
if( read( fd, data, 12) != 12){
free( data);
close(fd);
fprintf( FCGI_stdout, "Reason: Target %s broken (read error)\r\n", filename);
return -1;
}
if( *data || *(data + 1) || *(data + 2) ||
*(data + 3) != 12 || strncmp (data + 4, "jP \r\n\x87\n", 8)){
free( data);
close(fd);
fprintf( FCGI_stdout, "Reason: No JPEG 2000 Signature box in target %s\r\n", filename);
return -1;
}
free( data);
return fd;
}