int btContent::CreateMetainfoFile(const char *mifn) { FILE *fp; fp = fopen(mifn, "r"); if( fp ){ fprintf(stderr,"error, file %s already exist.\n",mifn); return -1; }else if( ENOENT != errno ){ fprintf(stderr,"error, couldn't create %s.\n",mifn); return -1; } fp = fopen(mifn, "w"); if( !fp ){ fprintf(stderr,"error, open %s failed. %s\n",mifn, strerror(errno)); return -1; } if( bencode_begin_dict(fp) != 1 ) goto err; // announce if( bencode_str("announce", fp) != 1 ) goto err; if( bencode_str(m_announce, fp) !=1 ) goto err; // create date if( bencode_str("creation date", fp) != 1) goto err; if( bencode_int(m_create_date, fp) != 1 ) goto err; // info dict if( bencode_str("info", fp) != 1) goto err; if( bencode_begin_dict(fp) != 1 ) goto err; if( m_btfiles.FillMetaInfo(fp) != 1 ) goto err; // piece length if( bencode_str("piece length", fp) != 1 ) goto err; if( bencode_int(m_piece_length, fp) != 1 ) goto err; // hash table; if( bencode_str("pieces", fp) != 1) goto err; if( bencode_buf((const char*) m_hash_table, m_hashtable_length, fp) != 1 ) goto err; if( bencode_end_dict_list(fp) != 1 ) goto err; // end info if( bencode_end_dict_list(fp) != 1 ) goto err; // end torrent fclose(fp); return 0; err: if( fp ) fclose(fp); return -1; }
size_t btFiles::FillMetaInfo(FILE* fp) { BTFILE *p; if( m_directory ){ // multi files if( bencode_str("files", fp) != 1 ) return 0; if( bencode_begin_list(fp) != 1) return 0; for( p = m_btfhead; p; p = p->bf_next){ if( bencode_begin_dict(fp) != 1) return 0; if( bencode_str("length", fp) != 1 ) return 0; if( bencode_int(p->bf_length, fp) != 1) return 0; if( bencode_str("path", fp) != 1) return 0; if( bencode_path2list(p->bf_filename, fp) != 1 ) return 0; if( bencode_end_dict_list(fp) != 1) return 0; } if(bencode_end_dict_list(fp) != 1 ) return 0; if(bencode_str("name", fp) != 1) return 0; return bencode_str(m_directory, fp); }else{ if( bencode_str("length", fp) != 1 ) return 0; if( bencode_int(m_btfhead->bf_length, fp) != 1) return 0; if( bencode_str("name", fp) != 1 ) return 0; return bencode_str(m_btfhead->bf_filename, fp); } return 1; }