openjpeg/applications/jpip/opj_server/query_parser.c

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/*
* $Id: query_parser.c 53 2011-05-09 16:55:39Z 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
* Copyright (c) 2011, Lucian Corlaciu, GSoC
* 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.
*/
#ifdef _WIN32
#include <windows.h>
#define strcasecmp _stricmp
#else
#include <strings.h>
#endif
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "query_parser.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
/**
* initialize query parameters
*
* @param[in,out] query_param query parameters
*/
void init_queryparam( query_param_t *query_param);
/*
* get a pair of field name and value from the string starting fieldname=fieldval&... format
*
* @param[in] stringptr pointer to the beginning of the parsing string
* @param[out] fieldname string to copy the field name, if not found, NULL
* @param[out] fieldval string to copy the field value, if not found, NULL
* @return pointer to the next field string, if there is none, NULL
*/
char * get_fieldparam( char *stringptr, char *fieldname, char *fieldval);
/**
* parse string to string array
*
* @param[in] src src string
* @param[out] cclose parsed string array
*/
void str2cclose( char *src, char cclose[][MAX_LENOFCID]);
void parse_metareq( char *field, query_param_t *query_param);
// parse the requested components (parses forms like:a; a,b; a-b; a-b,c; a,b-c)
void parse_comps( char *field, query_param_t *query_param);
//! maximum length of field name
#define MAX_LENOFFIELDNAME 10
//! maximum length of field value
#define MAX_LENOFFIELDVAL 128
void parse_query( char *query_string, query_param_t *query_param)
{
char *pquery, fieldname[MAX_LENOFFIELDNAME], fieldval[MAX_LENOFFIELDVAL];
init_queryparam( query_param);
pquery = query_string;
while( pquery!=NULL) {
pquery = get_fieldparam( pquery, fieldname, fieldval);
if( fieldname[0] != '\0'){
if( strcasecmp( fieldname, "target") == 0)
strcpy( query_param->target,fieldval);
else if( strcasecmp( fieldname, "tid") == 0)
strcpy( query_param->tid, fieldval);
else if( strcasecmp( fieldname, "fsiz") == 0)
sscanf( fieldval, "%d,%d", &query_param->fx, &query_param->fy);
else if( strcasecmp( fieldname, "roff") == 0)
sscanf( fieldval, "%d,%d", &query_param->rx, &query_param->ry);
else if( strcasecmp( fieldname, "rsiz") == 0)
sscanf( fieldval, "%d,%d", &query_param->rw, &query_param->rh);
else if( strcasecmp( fieldname, "layers") == 0)
sscanf( fieldval, "%d", &query_param->layers);
else if( strcasecmp( fieldname, "cid") == 0)
strcpy( query_param->cid, fieldval);
else if( strcasecmp( fieldname, "cnew") == 0)
query_param->cnew = true;
else if( strcasecmp( fieldname, "cclose") == 0)
str2cclose( fieldval, query_param->cclose);
else if( strcasecmp( fieldname, "metareq") == 0)
parse_metareq( fieldval, query_param);
else if( strcasecmp( fieldname, "comps") == 0)
parse_comps( fieldval, query_param);
else if( strcasecmp( fieldname, "type") == 0){
if( strncasecmp( fieldval, "jpp-stream", 10) == 0)
query_param->return_type = JPPstream;
else if( strncasecmp( fieldval, "jpt-stream", 10) == 0)
query_param->return_type = JPTstream;
}
else if( strcasecmp( fieldname, "len") == 0)
sscanf( fieldval, "%d", &query_param->len);
}
}
}
void init_queryparam( query_param_t *query_param)
{
int i;
query_param->target[0] = '\0';
query_param->tid[0] = '\0';
query_param->fx = -1;
query_param->fy = -1;
query_param->rx = -1;
query_param->ry = -1;
query_param->rw = -1;
query_param->rh = -1;
query_param->layers = -1;
query_param->lastcomp = -1;
query_param->comps = NULL;
query_param->cid[0] = '\0';
query_param->cnew = false;
memset( query_param->cclose, 0, MAX_NUMOFCCLOSE*MAX_LENOFCID);
memset( query_param->box_type, 0, MAX_NUMOFBOX*4);
memset( query_param->limit, 0, MAX_NUMOFBOX*sizeof(int));
for( i=0; i<MAX_NUMOFBOX; i++){
query_param->w[i] = false;
query_param->s[i] = false;
query_param->g[i] = false;
query_param->a[i] = false;
query_param->priority[i] = false;
}
query_param->root_bin = 0;
query_param->max_depth = -1;
query_param->metadata_only = false;
query_param->return_type = UNKNOWN;
query_param->len = -1;
}
char * get_fieldparam( char *stringptr, char *fieldname, char *fieldval)
{
char *eqp, *andp, *nexfieldptr;
if((eqp = strchr( stringptr, '='))==NULL){
fprintf( stderr, "= not found\n");
strcpy( fieldname, "");
strcpy( fieldval, "");
return NULL;
}
if((andp = strchr( stringptr, '&'))==NULL){
andp = strchr( stringptr, '\0');
nexfieldptr = NULL;
}
else
nexfieldptr = andp+1;
strncpy( fieldname, stringptr, eqp-stringptr);
fieldname[eqp-stringptr]='\0';
strncpy( fieldval, eqp+1, andp-eqp-1);
fieldval[andp-eqp-1]='\0';
return nexfieldptr;
}
void print_queryparam( query_param_t query_param)
{
int i;
fprintf( logstream, "query parameters:\n");
fprintf( logstream, "\t target: %s\n", query_param.target);
fprintf( logstream, "\t tid: %s\n", query_param.tid);
fprintf( logstream, "\t fx,fy: %d, %d\n", query_param.fx, query_param.fy);
fprintf( logstream, "\t rx,ry: %d, %d \t rw,rh: %d, %d\n", query_param.rx, query_param.ry, query_param.rw, query_param.rh);
fprintf( logstream, "\t layers: %d\n", query_param.layers);
fprintf( logstream, "\t components: ");
if( query_param.lastcomp == -1)
fprintf( logstream, "ALL\n");
else{
for( i=0; i<=query_param.lastcomp; i++)
if( query_param.comps[i])
fprintf( logstream, "%d ", i);
fprintf( logstream, "\n");
}
fprintf( logstream, "\t cnew: %d\n", query_param.cnew);
fprintf( logstream, "\t cid: %s\n", query_param.cid);
fprintf( logstream, "\t cclose: ");
for( i=0; query_param.cclose[i][0]!=0 && i<MAX_NUMOFCCLOSE; i++)
fprintf( logstream, "%s ", query_param.cclose[i]);
fprintf(logstream, "\n");
fprintf( logstream, "\t req-box-prop\n");
for( i=0; query_param.box_type[i][0]!=0 && i<MAX_NUMOFBOX; i++){
fprintf( logstream, "\t\t box_type: %.4s limit: %d w:%d s:%d g:%d a:%d priority:%d\n", query_param.box_type[i], query_param.limit[i], query_param.w[i], query_param.s[i], query_param.g[i], query_param.a[i], query_param.priority[i]);
}
fprintf( logstream, "\t root-bin: %d\n", query_param.root_bin);
fprintf( logstream, "\t max-depth: %d\n", query_param.max_depth);
fprintf( logstream, "\t metadata-only: %d\n", query_param.metadata_only);
fprintf( logstream, "\t image return type: %d, [JPP-stream=0, JPT-stream=1, UNKNOWN=-1]\n", query_param.return_type);
fprintf( logstream, "\t len: %d\n", query_param.len);
}
void str2cclose( char *src, char cclose[][MAX_LENOFCID])
{
int i, u, v;
size_t len = strlen( src);
for( i=0, u=0, v=0; i<len; i++){
if( src[i]==','){
u++;
v=0;
}
else
cclose[u][v++] = src[i];
}
}
void parse_req_box_prop( char *req_box_prop, int idx, query_param_t *query_param);
void parse_metareq( char *field, query_param_t *query_param)
{
char req_box_prop[20];
char *ptr, *src;
int numofboxreq = 0;
memset( req_box_prop, 0, 20);
// req-box-prop
ptr = strchr( field, '[');
ptr++;
src = ptr;
while( *ptr != ']'){
if( *ptr == ';'){
strncpy( req_box_prop, src, ptr-src);
parse_req_box_prop( req_box_prop, numofboxreq++, query_param);
ptr++;
src = ptr;
memset( req_box_prop, 0, 20);
}
ptr++;
}
strncpy( req_box_prop, src, ptr-src);
parse_req_box_prop( req_box_prop, numofboxreq++, query_param);
if(( ptr = strchr( field, 'R')))
sscanf( ptr+1, "%d", &(query_param->root_bin));
if(( ptr = strchr( field, 'D')))
sscanf( ptr+1, "%d", &(query_param->max_depth));
if(( ptr = strstr( field, "!!")))
query_param->metadata_only = true;
}
void parse_req_box_prop( char *req_box_prop, int idx, query_param_t *query_param)
{
char *ptr;
if( *req_box_prop == '*')
query_param->box_type[idx][0]='*';
else
strncpy( query_param->box_type[idx], req_box_prop, 4);
if(( ptr = strchr( req_box_prop, ':'))){
if( *(ptr+1)=='r')
query_param->limit[idx] = -1;
else
sscanf( ptr+1, "%d", &(query_param->limit[idx]));
}
if(( ptr = strchr( req_box_prop, '/'))){
ptr++;
while( *ptr=='w' || *ptr=='s' || *ptr=='g' || *ptr=='a'){
switch( *ptr){
case 'w': query_param->w[idx] = true; break;
case 's': query_param->s[idx] = true; break;
case 'g': query_param->g[idx] = true; break;
case 'a': query_param->a[idx] = true; break;
}
ptr++;
}
}
else{
query_param->g[idx] = true;
query_param->s[idx] = true;
query_param->w[idx] = true;
}
if((ptr = strchr( req_box_prop, '!')))
query_param->priority[idx] = true;
idx++;
}
void parse_comps( char *field, query_param_t *query_param)
{
int i,start,stop,aux = -1;
char *ptr1,*ptr2;
ptr1 = strchr( field, '-');
ptr2 = strchr( field, ',');
if( ptr1 && ptr2)
if( ptr1 > ptr2)
sscanf( field, "%d,%d-%d",&aux, &start, &stop);
else
sscanf( field, "%d-%d,%d", &start, &stop, &aux);
else
if(ptr1)
sscanf( field, "%d-%d", &start, &stop);
else if(ptr2){
sscanf( field, "%d,%d", &start, &stop);
aux = start;
start = stop;
}
else{
sscanf( field, "%d", &stop);
start = stop;
}
query_param->lastcomp = stop > aux ? stop : aux;
query_param->comps = (bool *)calloc( 1, (query_param->lastcomp+1)*sizeof(bool));
for( i=start; i<=stop; i++)
query_param->comps[i]=true;
if(aux!=-1)
query_param->comps[aux] = true;
}