static void process_path(const image_process &p,string path,scanner_params::PrintOptions &po)
{
/* Check for "/r" in path which means print raw */
if(path.size()>2 && path.substr(path.size()-2,2)=="/r"){
path = path.substr(0,path.size()-2);
}
string prefix = get_and_remove_token(path);
int64_t offset = stoi64(prefix);
/* Get the offset. process */
u_char *buf = (u_char *)calloc(opt_pagesize,1);
if(!buf) errx(1,"Cannot allocate buffer");
int count = p.pread(buf,opt_pagesize,offset);
if(count<0){
cerr << p.image_fname() << ": " << strerror(errno) << " (Read Error)\n";
return;
}
/* make up a bogus feature recorder set and feature recorder */
feature_recorder_set fs(feature_recorder_set::DISABLED);
pos0_t pos0(path+"-PRINT"); // insert the PRINT token
sbuf_t sbuf(pos0,buf,count,count,true); // sbuf system will free
scanner_params sp(scanner_params::scan,sbuf,fs,po);
process_path_printer(sp);
}
static void process_open_path(const image_process &p,std::string path,scanner_params::PrintOptions &po,
const size_t process_path_bufsize)
{
/* Check for "/r" in path which means print raw */
if(path.size()>2 && path.substr(path.size()-2,2)=="/r"){
path = path.substr(0,path.size()-2);
}
std::string prefix = get_and_remove_token(path);
int64_t offset = stoi64(prefix);
/* Get the offset into the buffer process */
u_char *buf = (u_char *)calloc(process_path_bufsize,1);
if(!buf){
std::cerr << "Cannot allocate " << process_path_bufsize << " buffer\n";
return;
}
int count = p.pread(buf,process_path_bufsize,offset);
if(count<0){
std::cerr << p.image_fname() << ": " << strerror(errno) << " (Read Error)\n";
return;
}
/* make up a bogus feature recorder set and with a disabled feature recorder.
* Then we call the path printer, which throws an exception after the printing
* to prevent further printing.
*
* The printer is called when a PRINT token is found in the
* forensic path, so that has to be added.
*/
feature_recorder_set fs(feature_recorder_set::SET_DISABLED,feature_recorder_set::null_hasher,
feature_recorder_set::NO_INPUT,feature_recorder_set::NO_OUTDIR);
pos0_t pos0(path+"-PRINT"); // insert the PRINT token
sbuf_t sbuf(pos0,buf,count,count,true); // sbuf system will free
scanner_params sp(scanner_params::PHASE_SCAN,sbuf,fs,po);
try {
process_path_printer(sp);
}
catch (path_printer_finished &e) {
}
}