107 lines
7.1 KiB
C++
107 lines
7.1 KiB
C++
#include "lan.h"
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#include "lan_pairing.h"
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#include <iostream>
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#include <tlhelp32.h>
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namespace
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{
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int passed{};
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void check(bool ok,const char *name) {if(!ok) throw std::runtime_error(name);++passed;}
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template<class F> void rejects(F f,const char *name) {bool failed=false;try{f();}catch(...){failed=true;}check(failed,name);}
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unsigned threads()
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{
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HANDLE snapshot=CreateToolhelp32Snapshot(TH32CS_SNAPTHREAD,0);
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if(snapshot==INVALID_HANDLE_VALUE) throw std::runtime_error("Cannot inspect test threads");
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THREADENTRY32 entry{sizeof(entry)};unsigned count=0;
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if(Thread32First(snapshot,&entry)) do {if(entry.th32OwnerProcessID==GetCurrentProcessId()) ++count;} while(Thread32Next(snapshot,&entry));
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CloseHandle(snapshot);return count;
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}
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}
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int main(int argc,char **argv)
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{
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using namespace ks;using namespace ks::lan;
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try
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{
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const std::string a(32,'a'),b(32,'b'),c(32,'c'),code="0123456789abcdef0123456789abcdef";
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check(normalizeCode("0123-4567-89AB-CDEF-0123-4567-89ab-cdef")==code,"code accepts groups and case");
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rejects([]{normalizeCode("123456");},"short guessable codes rejected");
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rejects([]{normalizeCode(std::string(32,'x'));},"invalid code rejected");
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check(identifier(randomHex(16)),"cryptographic instance ID");
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check(mac("key","The quick brown fox jumps over the lazy dog")=="f7bc83f430538424b13298e6aa6fb143ef4d59a14946175997479dbc2d1a3cd8", "HMAC SHA256 known vector");
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check(equal("abc","abc")&&!equal("abc","abd")&&!equal("abc","ab"),"proof comparison");
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Pairing left(a,b,code,100),right(b,a,code,100),wrong(b,a,std::string(32,'f'),100);
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check(wrong.receive(left.offer(),101).empty(),"different code cannot acknowledge");
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auto forged=left.offer();forged["id"]=c;
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check(right.receive(forged,101).empty(),"identity substitution rejected");
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forged=left.offer();forged["version"]=2;
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check(right.receive(forged,101).empty(),"unsupported protocol rejected");
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forged=left.offer();forged["to"]=c;
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check(right.receive(forged,101).empty(),"wrong destination rejected");
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auto ackR=right.receive(left.offer(),101),ackL=left.receive(right.offer(),101);
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check(ackR.size()==1&&ackL.size()==1,"mutual offers acknowledged");
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check(!left.confirmed&&!right.confirmed,"discovery and offers are not trust");
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auto confirmL=left.receive(ackR[0],102),confirmR=right.receive(ackL[0],102);
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check(confirmL.size()==1&&confirmR.size()==1,"authenticated challenges confirmed");
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left.receive(confirmR[0],103);right.receive(confirmL[0],103);
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check(left.confirmed&&right.confirmed&&left.derived==right.derived,"both endpoints derive same pair key");
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check(left.derived!=code&&left.derived.size()==64,"pair key separate from setup code");
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Pairing retry(a,b,code,200);
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check(retry.receive(ackR[0],201).empty()&&!retry.confirmed,"old ACK cannot pair new attempt");
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check(retry.receive(confirmR[0],201).empty()&&!retry.confirmed,"old confirmation cannot pair new attempt");
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Pairing expired(b,a,code,100);
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check(expired.receive(left.offer(),100+PairLifetime).empty(),"pairing window expires");
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check(left.receive(right.offer(),104).size()==1,"duplicate UDP offer is safely acknowledged");
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rejects([&]{Pairing self(a,a,code,0);},"self-pair rejected");
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auto root=std::filesystem::temp_directory_path()/wide("ks-lan-test-"+randomHex(16));
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std::filesystem::create_directory(root);
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struct Cleanup{std::filesystem::path p;~Cleanup(){std::error_code ec;std::filesystem::remove_all(p,ec);}} cleanup{root};
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auto request=[](LanService &service,Json j){auto s=j.dump();return Json::parse(service.command(Bytes(s.begin(),s.end())));};
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std::string identity;
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{
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auto idleThreads=threads();
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LanService service(root);
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check(threads()==idleThreads,"disabled LAN creates no worker thread");
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auto state=request(service,{{"action","status"}});
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check(!state.at("enabled").get<bool>()&&state.at("peers").empty(),"disabled by default");
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identity=state.at("id");
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check(!std::filesystem::exists(root/L"lan-pairing.bin"),"viewing disabled status does not create config");
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auto generated=request(service,{{"action","code"}}).at("code").get<std::string>();
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check(identifier(generated),"generated pairing code has 128 bits");
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rejects([&]{request(service,{{"action","pair"},{"peer",b},{"code",code}});},"cannot pair undiscovered peer while disabled");
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request(service,{{"action","enable"},{"enabled",false}});
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auto sealed=readFile(root/L"lan-pairing.bin",256*1024);
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check(std::string(sealed.begin(),sealed.end()).find(identity)==std::string::npos,"local configuration protected by DPAPI");
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if(argc>1&&std::string(argv[1])=="--network")
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{
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request(service,{{"action","enable"},{"enabled",true}});
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Sleep(400);
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auto active=request(service,{{"action","status"}});
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check(active.at("enabled").get<bool>() && active.at("status").get<std::string>().find("LAN stopped:")==std::string::npos,"opt-in discovery starts successfully");
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check(threads()>idleThreads,"enabled discovery has a worker");
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request(service,{{"action","enable"},{"enabled",false}});
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check(threads()==idleThreads,"disabling discovery joins its worker");
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// Reopening immediately exercises socket cleanup and exclusive bind.
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request(service,{{"action","enable"},{"enabled",true}});Sleep(200);
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check(request(service,{{"action","status"}}).at("status").get<std::string>().find("LAN stopped:")==std::string::npos,"discovery port released and reusable");
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request(service,{{"action","enable"},{"enabled",false}});
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}
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}
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{
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LanService restored(root);auto state=request(restored,{{"action","status"}});
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check(state.at("id")==identity&&!state.at("enabled").get<bool>(),"stable local instance ID and disabled state restored");
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}
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{
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auto saved=Json::parse(unprotect(readFile(root/L"lan-pairing.bin",256*1024)));
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saved["trusted"][b]={{"name","Other KSwitcher"},{"key",left.derived}};
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auto json=saved.dump();atomicWrite(root/L"lan-pairing.bin",protect(Bytes(json.begin(),json.end())));
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LanService restored(root);auto state=request(restored,{{"action","status"}});
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check(state["peers"].size()==1 && state["peers"][0].at("paired").get<bool>() && !state["peers"][0].at("online").get<bool>(),"saved pair remains visible offline");
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check(state.dump().find(left.derived)==std::string::npos,"status never exposes stored pair keys");
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request(restored,{{"action","forget"},{"peer",b}});
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check(request(restored,{{"action","status"}})["peers"].empty(),"forget removes offline pair");
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}
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std::cout<<"Passed "<<passed<<" LAN discovery/pairing checks\n";
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}
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catch(const std::exception &e){std::cerr<<"FAIL: "<<e.what()<<'\n';return 1;}
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}
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