unsigned int TorrentFile::GetSize()
{
unsigned int size = 0;
unsigned int len = (unsigned int)v_announce_list.size(); // announce list
vector <string>::iterator v1_Iter;
for(v1_Iter = v_announce_list.begin(); v1_Iter != v_announce_list.end( ) ;v1_Iter++) {
size+= (unsigned int)(*v1_Iter).size() + 1;
}
//size +=
size += 20*sizeof(m_info_hash); // m_info_hash;
size += 256; // m_url[256];
size += 256; // char m_name[256];
size += (unsigned int)m_info_hash_string.size() + 1; // m_info_hash_string
size += (unsigned int)v_pieces.size()*20*sizeof(unsigned short);
PeerList * curr = m_peers;
while(curr != NULL) {
size += curr->GetSize()+sizeof(int);
curr = curr->GetNext();
}
size += sizeof(bool);
return size+sizeof(TorrentFileHeader);
}
char * TorrentFile::GetBuffer()
{
int size = GetSize();
int cur_pos = 0;
char * buf = new char[size];
memset(buf,0,size);
char * ptr = buf;
TorrentFileHeader header;
header.SetAnnounceLength((int)GetAnnounceList().size());
header.SetNumPieces((int)GetNumPieces());
header.m_creationdate = m_creationdate;
header.m_length = m_length;
header.m_piecelength = m_piecelength;
header.m_numpieces = m_numpieces;
header.info_len = info_len;
header.info_start = info_start;
header.m_size = 0;//m_size;
memcpy(ptr, &header, sizeof(TorrentFileHeader));
ptr += sizeof(TorrentFileHeader);
vector <string>::iterator v1_Iter;
for(v1_Iter = v_announce_list.begin(); v1_Iter != v_announce_list.end( ) ;v1_Iter++) {
strcpy(ptr, (*v1_Iter).c_str());
ptr += (*v1_Iter).size() + 1;
}
memcpy(ptr, m_info_hash, 20*sizeof(unsigned short));
ptr += 20*sizeof(unsigned short); // m_info_hash;
memcpy(ptr, m_url, 256);
ptr += 256; // m_url[256];
memcpy(ptr, m_name, 256);
ptr += 256; // char m_name[256];
strcpy(ptr, m_info_hash_string.c_str());
ptr += (int)m_info_hash_string.size() + 1; // m_info_hash_string
*((bool *)ptr) = b_is_valid;
ptr+=sizeof(bool);
vector <unsigned short*>::iterator v2_Iter;
for(v2_Iter = v_pieces.begin(); v2_Iter != v_pieces.end( ) ;v2_Iter++) {
memcpy(ptr, (*v2_Iter), 20);
ptr += 20*sizeof(unsigned short);
}
PeerList * curr = m_peers;
while(curr != NULL) {
curr->GetBuffer(ptr);
ptr += curr->GetSize();
curr = curr->GetNext();
}
return buf;
}