/* The code is another part of my ipv6-calc. This code traslate from the abbreviated ipv6-address to full ipv6-address notation (Ну вы поняли) github: https://github.com/Spybull If you liked it don't forget to give +1. By Matthew Benjamin */ #include #include #include using namespace std; vector SplitIPv6Address(string); string CreateFullIPv6Address(vector); int main(int argc, char **argv) { string examples[] = { "FF80::123:1234:ABCD:EF12", "2001:db8::1", "2001:db8::2:1", "2607:f0d0:1002:51::", "2001:db8:1::ab9:C0A8:102", "::1" }; for(auto i : examples) { cout << "Before: " << i << endl; vector splitAddr = SplitIPv6Address(i); cout << "After: " << CreateFullIPv6Address(splitAddr) << endl << endl; } return 0; } vector SplitIPv6Address(string IPv6) { vector hextetsIPv6; size_t last{0}, next{0}; if(IPv6.find("::") == 0) { hextetsIPv6.push_back(""); hextetsIPv6.push_back(IPv6.substr(2)); return hextetsIPv6; } while(true) { next = IPv6.find(":", last); string new_str = IPv6.substr(last, next-last); hextetsIPv6.push_back(new_str); last = next + 1; if(next == string::npos) break; } if(IPv6.find("::")+2 == IPv6.length()) { hextetsIPv6.pop_back(); return hextetsIPv6; } return hextetsIPv6; } string CreateFullIPv6Address(vector splitAddr) { const int hex_max = 8; string IPv6Address{}; vector fullIPv6Addr; int curSize = splitAddr.size()-1; int zIns = hex_max - curSize; for(auto i = 0; i < splitAddr.size(); i++) { size_t len = splitAddr[i].length(); if(len == 0) { if(!splitAddr[curSize].size()) { for(int j = 0; j < zIns-1; j++) fullIPv6Addr.push_back("0000:"); fullIPv6Addr.push_back("0000"); } else { for(int j = 0; j < zIns; j++) fullIPv6Addr.push_back("0000:"); } continue; } if(len < 4 && len != 0) { if(len == 3) splitAddr[i].insert(0, "0"); else if(len == 2) splitAddr[i].insert(0, "00"); else splitAddr[i].insert(0, "000"); } if(i == curSize) fullIPv6Addr.push_back(splitAddr[i]); else fullIPv6Addr.push_back(splitAddr[i]+":"); } for(auto i : fullIPv6Addr) IPv6Address += i; return IPv6Address; }

IPv6 address (expansion)