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