258 lines
6.5 KiB
C
258 lines
6.5 KiB
C
/*
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* $Id: target_manager.c 44 2011-02-15 12:32:29Z kaori $
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*
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* Copyright (c) 2002-2011, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
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* Copyright (c) 2002-2011, Professor Benoit Macq
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* Copyright (c) 2010-2011, Kaori Hagihara
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <time.h>
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#include "target_manager.h"
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#ifdef SERVER
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#include "fcgi_stdio.h"
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#define logstream FCGI_stdout
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#else
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#define FCGI_stdout stdout
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#define FCGI_stderr stderr
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#define logstream stderr
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#endif //SERVER
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targetlist_param_t * gene_targetlist()
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{
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targetlist_param_t *targetlist;
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targetlist = (targetlist_param_t *)malloc( sizeof(targetlist_param_t));
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targetlist->first = NULL;
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targetlist->last = NULL;
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return targetlist;
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}
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/**
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* open jp2 format image file
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*
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* @param[in] filename file name (.jp2)
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* @return file descriptor
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*/
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int open_jp2file( char filename[]);
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target_param_t * gene_target( targetlist_param_t *targetlist, char *targetname)
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{
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target_param_t *target;
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int fd;
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index_param_t *jp2idx;
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static int last_csn = 0;
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if( targetname[0]=='\0'){
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fprintf( FCGI_stderr, "Error: exception, no targetname in gene_target()\n");
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return NULL;
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}
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if((fd = open_jp2file( targetname)) == -1){
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fprintf( FCGI_stdout, "Status: 404\r\n");
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return NULL;
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}
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if( !(jp2idx = parse_jp2file( fd))){
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fprintf( FCGI_stdout, "Status: 501\r\n");
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return NULL;
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}
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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());
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strcpy( target->filename, targetname);
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target->fd = fd;
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target->csn = last_csn++;
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target->codeidx = jp2idx;
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target->num_of_use = 0;
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target->next=NULL;
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if( targetlist->first) // there are one or more entries
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targetlist->last->next = target;
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else // first entry
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targetlist->first = target;
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targetlist->last = target;
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#ifndef SERVER
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fprintf( logstream, "local log: target %s generated\n", targetname);
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#endif
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return target;
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}
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void refer_target( target_param_t *reftarget, target_param_t **ptr)
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{
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*ptr = reftarget;
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reftarget->num_of_use++;
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}
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void unrefer_target( target_param_t *target)
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{
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target->num_of_use--;
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}
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void delete_target( target_param_t **target)
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{
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close( (*target)->fd);
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delete_index ( &(*target)->codeidx);
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#ifndef SERVER
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fprintf( logstream, "local log: target: %s deleted\n", (*target)->filename);
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#endif
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free(*target);
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}
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void delete_target_in_list( target_param_t **target, targetlist_param_t *targetlist)
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{
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target_param_t *ptr;
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if( *target == targetlist->first)
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targetlist->first = (*target)->next;
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else{
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ptr = targetlist->first;
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while( ptr->next != *target){
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ptr=ptr->next;
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}
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ptr->next = (*target)->next;
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if( *target == targetlist->last)
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targetlist->last = ptr;
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}
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delete_target( target);
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}
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void delete_targetlist(targetlist_param_t **targetlist)
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{
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target_param_t *targetPtr, *targetNext;
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targetPtr = (*targetlist)->first;
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while( targetPtr != NULL){
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targetNext=targetPtr->next;
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delete_target( &targetPtr);
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targetPtr=targetNext;
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}
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free( *targetlist);
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}
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void print_target( target_param_t *target)
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{
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fprintf( logstream, "target:\n");
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fprintf( logstream, "\t tid=%s\n", target->tid);
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fprintf( logstream, "\t csn=%d\n", target->csn);
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fprintf( logstream, "\t target=%s\n\n", target->filename);
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}
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void print_alltarget( targetlist_param_t *targetlist)
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{
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target_param_t *ptr;
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ptr = targetlist->first;
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while( ptr != NULL){
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print_target( ptr);
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ptr=ptr->next;
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}
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}
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target_param_t * search_target( char targetname[], targetlist_param_t *targetlist)
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{
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target_param_t *foundtarget;
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foundtarget = targetlist->first;
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while( foundtarget != NULL){
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if( strcmp( targetname, foundtarget->filename) == 0)
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return foundtarget;
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foundtarget = foundtarget->next;
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}
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return NULL;
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}
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target_param_t * search_targetBytid( char tid[], targetlist_param_t *targetlist)
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{
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target_param_t *foundtarget;
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foundtarget = targetlist->first;
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while( foundtarget != NULL){
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if( strcmp( tid, foundtarget->tid) == 0)
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return foundtarget;
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foundtarget = foundtarget->next;
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}
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return NULL;
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}
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int open_jp2file( char filename[])
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{
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int fd;
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char *data;
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if( (fd = open( filename, O_RDONLY)) == -1){
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fprintf( FCGI_stdout, "Reason: Target %s not found\r\n", filename);
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return -1;
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}
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// Check resource is a JP family file.
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if( lseek( fd, 0, SEEK_SET)==-1){
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close(fd);
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fprintf( FCGI_stdout, "Reason: Target %s broken (lseek error)\r\n", filename);
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return -1;
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}
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data = (char *)malloc( 12); // size of header
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if( read( fd, data, 12) != 12){
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free( data);
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close(fd);
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fprintf( FCGI_stdout, "Reason: Target %s broken (read error)\r\n", filename);
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return -1;
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}
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if( *data || *(data + 1) || *(data + 2) ||
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*(data + 3) != 12 || strncmp (data + 4, "jP \r\n\x87\n", 8)){
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free( data);
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close(fd);
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fprintf( FCGI_stdout, "Reason: No JPEG 2000 Signature box in target %s\r\n", filename);
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return -1;
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}
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free( data);
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return fd;
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}
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