bool MetaInfo::parse(string& content) { clear(); bencode_t ben, ben2; BencodeParser parser; parser.bencode_init(&ben, content.c_str(), (int)content.length()); const char* buf; long int number; int len; totalSizeSingleFile = content.length(); if(!parser.bencode_is_dict(&ben)){ std::cout<<"not a dictionary"; return false; } while(parser.bencode_dict_has_next(&ben)) { if(parser.bencode_dict_get_next(&ben, &ben2, &buf, &len) == 0) { std::cout<<"breaking the loop\n"; break; } std::string key(buf, len); if(key == "announce"){ parser.bencode_string_value(&ben2, &buf, &len); metaInfoAnnounce= string(buf, len); std::cout<<key<<"="<<metaInfoAnnounce<<std::endl; } else if(key == "comment"){ parser.bencode_string_value(&ben2, &buf, &len); metaInfoComment = string(buf, len); std::cout<<key<<"="<<metaInfoComment<<std::endl; } else if(key == "creation date"){ parser.bencode_int_value(&ben2, &number); std::cout<<key<<"="<<number<<std::endl; // metaInfoCreationDate } else if(key == "httpseeds"){ cout<<key<<std::endl; if(parser.bencode_is_list(&ben2)){ bencode_t ben3; while(parser.bencode_list_has_next(&ben2)){ if(!parser.bencode_list_get_next(&ben2, &ben3)) { std::cout<<"error getting list element\n"; return false; } std::string val; parser.bencode_string_value(&ben3, &buf, &len); val = string(buf, len); std::cout<<val<<std::endl; metaInfoHTTPseeds.push_back(val); } } } else if(key == "info") { //get info section std::cout<<key<<std::endl; int infoSectionLength=strlen("d"); infoData = string(ben2.str, ben2.len); if(parser.bencode_is_dict(&ben2)){ metaInfoFileForm = SingleFileForm; bencode_t ben3; while(parser.bencode_dict_has_next(&ben2)){ if(!parser.bencode_dict_get_next(&ben2, &ben3, &buf, &len)){ std::cout<<"error getting dictionary element\n"; return false; } std::string key(buf, len); infoSectionLength = infoSectionLength+numberOfDigits(len)+len+1; if(key == "files"){ metaInfoFileForm = MultiFileForm; } else if(key=="length"){ parser.bencode_int_value(&ben3, &number); infoSectionLength = infoSectionLength + numberOfDigits(number) + 2; metaInfoSingleFile.length = number; std::cout<<key<<"="<<number<<std::endl; } else if(key=="name"){ parser.bencode_string_value(&ben3, &buf, &len); infoSectionLength = infoSectionLength+len+numberOfDigits(len)+1; metaInfoSingleFile.name=string(buf, len); std::cout<<key<<"="<<metaInfoSingleFile.name<<std::endl; } else if(key=="piece length"){ parser.bencode_int_value(&ben3, &number); infoSectionLength = infoSectionLength + numberOfDigits(number)+2; metaInfoSingleFile.pieceLength=number; std::cout<<key<<"="<<metaInfoSingleFile.pieceLength<<std::endl; } else if(key=="md5sum"){ parser.bencode_string_value(&ben3, &buf, &len); infoSectionLength = infoSectionLength+len+numberOfDigits(len)+1; metaInfoSingleFile.md5sum = string(buf, len).c_str(); std::cout<<key<<"="<<metaInfoSingleFile.md5sum<<std::endl; } else if(key=="pieces"){ std::cout<<key<<std::endl; parser.bencode_string_value(&ben3, &buf, &len); infoSectionLength = infoSectionLength+len+numberOfDigits(len)+1; const char* sha1Data=string(buf, len).c_str(); for(int i=0; i<len; i+=20){ char* sha1Sum= (char*)malloc(20); memcpy(sha1Sum, sha1Data, 20); std::cout<<sha1Sum<<std::endl; metaInfoSingleFile.sha1Sums.push_back(sha1Sum); sha1Data=sha1Data+20; } } } } infoSectionLength = infoSectionLength+1; infoData = string(infoData.c_str(), infoSectionLength); std::cout<<"infoSectionLength = "<<infoSectionLength<<std::endl; } } return true; }
/** * Move to next item * @param sp The bencode string we are processing * @return Pointer to string on success, otherwise NULL */ static const char *__iterate_to_next_string_pos( bencode_t * be, const char *sp ) { BencodeParser bp; bencode_t iter; bp.bencode_init(&iter, sp, __carry_length(be, sp)); if (bp.bencode_is_dict(&iter)) { /* navigate to the end of the dictionary */ while (bp.bencode_dict_has_next(&iter)) { /* ERROR: input string is invalid */ if (0 == bp.bencode_dict_get_next(&iter, NULL, NULL, NULL)) return NULL; } return iter.str + 1; } else if (bp.bencode_is_list(&iter)) { /* navigate to the end of the list */ while (bp.bencode_list_has_next(&iter)) { /* ERROR: input string is invalid */ if (-1 == bp.bencode_list_get_next(&iter, NULL)) return NULL; } return iter.str + 1; } else if (bp.bencode_is_string(&iter)) { int len; const char *str; /* ERROR: input string is invalid */ if (0 == bp.bencode_string_value(&iter, &str, &len)) return NULL; return str + len; } else if (bp.bencode_is_int(&iter)) { const char *end; long int val; if (0 == __read_string_int(&iter.str[1], &end, &val)) return NULL; assert(end[0] == 'e'); return end + 1; } /* input string is invalid */ return NULL; }