openjpeg/applications/jpip/libopenjpip/box_manager.c

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/*
* $Id: box_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 <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <ctype.h>
#include "box_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
boxlist_param_t * gene_boxlist()
{
boxlist_param_t *boxlist;
boxlist = (boxlist_param_t *)malloc( sizeof(boxlist_param_t));
boxlist->first = NULL;
boxlist->last = NULL;
return boxlist;
}
boxlist_param_t * get_boxstructure( int fd, Byte8_t offset, Byte8_t length)
{
boxlist_param_t *boxlist;
box_param_t *box;
int pos;
boxlist = NULL;
pos = offset;
do{
if(!(box = gene_boxbyOffset( fd, pos)))
break;
pos += box->length;
if( !boxlist)
boxlist = gene_boxlist();
insert_box_into_list( box, boxlist);
}while( pos < offset+length);
return boxlist;
}
box_param_t * gene_boxbyOffset( int fd, Byte8_t offset)
{
Byte_t *data;
Byte8_t boxlen, headlen;
char *boxtype;
box_param_t *box;
// read LBox and TBox
if(!(data = fetch_bytes( fd, offset, 8))){
fprintf( FCGI_stderr, "Error: error in gene_boxbyOffset( %d, %lld)\n", fd, offset);
return NULL;
}
headlen = 8;
boxlen = (Byte8_t)big4(data);
boxtype = (char *)(data+4);
// box type constraint
if( !isalpha(boxtype[0]) || !isalpha(boxtype[1]) ||
(!isalnum(boxtype[2])&&!isblank(boxtype[2])) ||
(!isalpha(boxtype[3])&&!isblank(boxtype[3]))){
free( data);
return NULL;
}
if( boxlen == 1){
Byte_t *data2;
headlen = 16;
// read XLBox
if((data2 = fetch_bytes( fd, offset+8, 8))){
boxlen = big8(data2);
free(data2);
}
else{
fprintf( FCGI_stderr, "Error: error in gene_boxbyOffset( %d, %lld)\n", fd, offset);
free( data);
return NULL;
}
}
box = (box_param_t *)malloc( sizeof( box_param_t));
box->fd = fd;
box->offset = offset;
box->headlen = headlen;
box->length = boxlen;
strncpy( box->type, boxtype, 4);
box->next = NULL;
free( data);
return box;
}
box_param_t * gene_boxbyOffinStream( Byte_t *stream, Byte8_t offset)
{
Byte8_t boxlen, headlen;
char *boxtype;
box_param_t *box;
// read LBox and TBox
headlen = 8;
boxlen = (Byte8_t)big4( stream);
boxtype = (char *)( stream+4);
// box type constraint
if( !isalpha(boxtype[0]) || !isalpha(boxtype[1]) ||
(!isalnum(boxtype[2])&&!isblank(boxtype[2])) ||
(!isalpha(boxtype[3])&&!isblank(boxtype[3]))){
return NULL;
}
if( boxlen == 1){
headlen = 16;
boxlen = big8( stream+8); // read XLBox
}
box = (box_param_t *)malloc( sizeof( box_param_t));
box->fd = -1;
box->offset = offset;
box->headlen = headlen;
box->length = boxlen;
strncpy( box->type, boxtype, 4);
box->next = NULL;
return box;
}
box_param_t * gene_boxbyType( int fd, Byte8_t offset, Byte8_t length, char TBox[])
{
Byte8_t pos;
Byte_t *data;
Byte8_t boxlen, headlen;
char *boxtype;
box_param_t *foundbox;
if( length==0){ // set the max length
struct stat sb;
if( fstat( fd, &sb) == -1){
fprintf( FCGI_stdout, "Reason: Target broken (fstat error)\r\n");
return NULL;
}
length = (Byte8_t)sb.st_size - offset;
}
pos = offset;
while( pos < offset+length-7){ // LBox+TBox-1=7
// read LBox and TBox
if((data = fetch_bytes( fd, pos, 8))){
headlen = 8;
boxlen = (Byte8_t)big4(data);
boxtype = (char *)(data+4);
if( boxlen == 1){
Byte_t *data2;
headlen = 16;
// read XLBox
if((data2 = fetch_bytes( fd, pos+8, 8))){
boxlen = big8(data2);
free(data2);
}
else{
fprintf( FCGI_stderr, "Error: error in gene_boxbyType( %d, %lld, %lld, %s)\n", fd, offset, length, TBox);
return NULL;
}
}
if( strncmp ( boxtype, TBox, 4) == 0){
foundbox = (box_param_t *)malloc( sizeof( box_param_t));
foundbox->fd = fd;
foundbox->offset = pos;
foundbox->headlen = headlen;
foundbox->length = boxlen;
strncpy( foundbox->type, TBox, 4);
foundbox->next = NULL;
free( data);
return foundbox;
}
free( data);
}
else{
fprintf( FCGI_stderr, "Error: error in gene_boxbyType( %d, %lld, %lld, %s)\n", fd, offset, length, TBox);
return NULL;
}
pos+= boxlen;
}
fprintf( FCGI_stderr, "Error: Box %s not found\n", TBox);
return NULL;
}
box_param_t * gene_boxbyTypeinStream( Byte_t *stream, Byte8_t offset, Byte8_t length, char TBox[])
{
Byte8_t pos;
Byte_t *data;
Byte8_t boxlen, headlen;
char *boxtype;
box_param_t *foundbox;
if( length<=0){ // set the max length
fprintf( FCGI_stderr, "func gene_boxbyTypeinStream(), max length must be more than 0\n");
return NULL;
}
pos = offset;
while( pos < offset+length-7){ // LBox+TBox-1=7
// read LBox and TBox
data = stream + pos;
headlen = 8;
boxlen = (Byte8_t)big4(data);
boxtype = (char *)(data+4);
if( boxlen == 1){
// read XLBox
headlen = 16;
boxlen = big8( data+8);
}
if( strncmp ( boxtype, TBox, 4) == 0){
foundbox = (box_param_t *)malloc( sizeof( box_param_t));
foundbox->fd = -1;
foundbox->offset = pos;
foundbox->headlen = headlen;
foundbox->length = boxlen;
strncpy( foundbox->type, TBox, 4);
foundbox->next = NULL;
return foundbox;
}
pos+= boxlen;
}
fprintf( FCGI_stderr, "Error: Box %s not found\n", TBox);
return NULL;
}
box_param_t * gene_childboxbyOffset( box_param_t *superbox, Byte8_t offset)
{
return gene_boxbyOffset( superbox->fd, get_DBoxoff( superbox)+offset);
}
box_param_t * gene_childboxbyType( box_param_t *superbox, Byte8_t offset, char TBox[])
{
return gene_boxbyType( superbox->fd, get_DBoxoff( superbox)+offset, get_DBoxlen( superbox)-offset, TBox);
}
Byte8_t get_DBoxoff( box_param_t *box)
{
return box->offset+box->headlen;
}
Byte8_t get_DBoxlen( box_param_t *box)
{
return box->length-box->headlen;
}
Byte_t * fetch_headbytes( box_param_t *box)
{
return fetch_bytes( box->fd, box->offset, box->headlen);
}
Byte_t * fetch_DBoxbytes( box_param_t *box, long offset, int size)
{
return fetch_bytes( box->fd, get_DBoxoff( box)+offset, size);
}
Byte_t fetch_DBox1byte( box_param_t *box, long offset)
{
return fetch_1byte( box->fd, get_DBoxoff( box)+offset);
}
Byte2_t fetch_DBox2bytebigendian( box_param_t *box, long offset)
{
return fetch_2bytebigendian( box->fd, get_DBoxoff( box)+offset);
}
Byte4_t fetch_DBox4bytebigendian( box_param_t *box, long offset)
{
return fetch_4bytebigendian( box->fd, get_DBoxoff( box)+offset);
}
Byte8_t fetch_DBox8bytebigendian( box_param_t *box, long offset)
{
return fetch_8bytebigendian( box->fd, get_DBoxoff( box)+offset);
}
box_param_t * search_box( char type[], boxlist_param_t *boxlist)
{
box_param_t *foundbox;
foundbox = boxlist->first;
while( foundbox != NULL){
if( strncmp( type, foundbox->type, 4) == 0)
return foundbox;
foundbox = foundbox->next;
}
fprintf( FCGI_stderr, "Error: Box %s not found\n", type);
return NULL;
}
void print_box( box_param_t *box)
{
fprintf( logstream, "box info:\n"
"\t type: %.4s\n"
"\t offset: %lld %#llx\n"
"\t header length: %d\n"
"\t length: %lld %#llx\n", box->type, box->offset, box->offset, box->headlen, box->length, box->length);
}
void print_allbox( boxlist_param_t *boxlist)
{
box_param_t *ptr;
if( !boxlist)
return;
ptr = boxlist->first;
if( !ptr)
fprintf( logstream, "no box\n");
fprintf( logstream, "all box info: \n");
while( ptr != NULL){
print_box( ptr);
ptr=ptr->next;
}
}
void delete_box_in_list( box_param_t **box, boxlist_param_t *boxlist)
{
box_param_t *ptr;
if( *box == boxlist->first)
boxlist->first = (*box)->next;
else{
ptr = boxlist->first;
while( ptr->next != *box){
ptr=ptr->next;
}
ptr->next = (*box)->next;
if( *box == boxlist->last)
boxlist->last = ptr;
}
free( *box);
}
void delete_box_in_list_by_type( char type[], boxlist_param_t *boxlist)
{
box_param_t *box;
box = search_box( type, boxlist);
delete_box_in_list( &box, boxlist);
}
void delete_boxlist( boxlist_param_t **boxlist)
{
box_param_t *boxPtr, *boxNext;
if(!(*boxlist))
return;
boxPtr = (*boxlist)->first;
while( boxPtr != NULL){
boxNext=boxPtr->next;
free( boxPtr);
boxPtr=boxNext;
}
free( *boxlist);
}
void insert_box_into_list( box_param_t *box, boxlist_param_t *boxlist)
{
if( boxlist->first)
boxlist->last->next = box;
else
boxlist->first = box;
boxlist->last = box;
}