X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/a4221092e50af0b74040f5b4ee800c78b05fd84e..2853201580944cb4e5a2a8a810e800e89e9a0475:/methods/https.cc diff --git a/methods/https.cc b/methods/https.cc index 366148e19..fc439bef8 100644 --- a/methods/https.cc +++ b/methods/https.cc @@ -37,24 +37,22 @@ /*}}}*/ using namespace std; -bool HttpsMethod::Configuration(std::string Message) -{ - if (pkgAcqMethod::Configuration(Message) == false) - return false; - - DropPrivsOrDie(); - - return true; -} +struct APT_HIDDEN CURLUserPointer { + HttpsMethod * const https; + HttpsMethod::FetchResult * const Res; + HttpsMethod::FetchItem const * const Itm; + CURLUserPointer(HttpsMethod * const https, HttpsMethod::FetchResult * const Res, + HttpsMethod::FetchItem const * const Itm) : https(https), Res(Res), Itm(Itm) {} +}; size_t HttpsMethod::parse_header(void *buffer, size_t size, size_t nmemb, void *userp) { size_t len = size * nmemb; - HttpsMethod *me = (HttpsMethod *)userp; + CURLUserPointer *me = static_cast(userp); std::string line((char*) buffer, len); for (--len; len > 0; --len) - if (isspace(line[len]) == 0) + if (isspace_ascii(line[len]) == 0) { ++len; break; @@ -63,20 +61,52 @@ HttpsMethod::parse_header(void *buffer, size_t size, size_t nmemb, void *userp) if (line.empty() == true) { - if (me->Server->Result != 416 && me->Server->StartPos != 0) + if (me->https->Server->Result != 416 && me->https->Server->StartPos != 0) ; - else if (me->Server->Result == 416 && me->Server->Size == me->File->FileSize()) + else if (me->https->Server->Result == 416) { - me->Server->Result = 200; - me->Server->StartPos = me->Server->Size; + bool partialHit = false; + if (me->Itm->ExpectedHashes.usable() == true) + { + Hashes resultHashes(me->Itm->ExpectedHashes); + FileFd file(me->Itm->DestFile, FileFd::ReadOnly); + me->https->Server->TotalFileSize = file.FileSize(); + me->https->Server->Date = file.ModificationTime(); + resultHashes.AddFD(file); + HashStringList const hashList = resultHashes.GetHashStringList(); + partialHit = (me->Itm->ExpectedHashes == hashList); + } + else if (me->https->Server->Result == 416 && me->https->Server->TotalFileSize == me->https->File->FileSize()) + partialHit = true; + + if (partialHit == true) + { + me->https->Server->Result = 200; + me->https->Server->StartPos = me->https->Server->TotalFileSize; + // the actual size is not important for https as curl will deal with it + // by itself and e.g. doesn't bother us with transport-encoding… + me->https->Server->JunkSize = std::numeric_limits::max(); + } + else + me->https->Server->StartPos = 0; } else - me->Server->StartPos = 0; + me->https->Server->StartPos = 0; - me->File->Truncate(me->Server->StartPos); - me->File->Seek(me->Server->StartPos); + me->Res->LastModified = me->https->Server->Date; + me->Res->Size = me->https->Server->TotalFileSize; + me->Res->ResumePoint = me->https->Server->StartPos; + + // we expect valid data, so tell our caller we get the file now + if (me->https->Server->Result >= 200 && me->https->Server->Result < 300) + { + if (me->https->Server->JunkSize == 0 && me->Res->Size != 0 && me->Res->Size > me->Res->ResumePoint) + me->https->URIStart(*me->Res); + if (me->https->Server->AddPartialFileToHashes(*(me->https->File)) == false) + return 0; + } } - else if (me->Server->HeaderLine(line) == false) + else if (me->https->Server->HeaderLine(line) == false) return 0; return size*nmemb; @@ -85,42 +115,55 @@ HttpsMethod::parse_header(void *buffer, size_t size, size_t nmemb, void *userp) size_t HttpsMethod::write_data(void *buffer, size_t size, size_t nmemb, void *userp) { - HttpsMethod *me = (HttpsMethod *)userp; - - if (me->Res.Size == 0) - me->URIStart(me->Res); - if(me->File->Write(buffer, size*nmemb) != true) - return false; + HttpsMethod *me = static_cast(userp); + size_t buffer_size = size * nmemb; + // we don't need to count the junk here, just drop anything we get as + // we don't always know how long it would be, e.g. in chunked encoding. + if (me->Server->JunkSize != 0) + return buffer_size; + + if(me->File->Write(buffer, buffer_size) != true) + return 0; - if(me->Queue->MaximumSize > 0 && me->File->Tell() > me->Queue->MaximumSize) + if(me->Queue->MaximumSize > 0) { - me->SetFailReason("MaximumSizeExceeded"); - return _error->Error("Writing more data than expected (%llu > %llu)", - me->TotalWritten, me->Queue->MaximumSize); + unsigned long long const TotalWritten = me->File->Tell(); + if (TotalWritten > me->Queue->MaximumSize) + { + me->SetFailReason("MaximumSizeExceeded"); + _error->Error("Writing more data than expected (%llu > %llu)", + TotalWritten, me->Queue->MaximumSize); + return 0; + } } - return size*nmemb; -} -int -HttpsMethod::progress_callback(void *clientp, double dltotal, double /*dlnow*/, - double /*ultotal*/, double /*ulnow*/) -{ - HttpsMethod *me = (HttpsMethod *)clientp; - if(dltotal > 0 && me->Res.Size == 0) { - me->Res.Size = (unsigned long long)dltotal; - } - return 0; + if (me->Server->GetHashes()->Add((unsigned char const * const)buffer, buffer_size) == false) + return 0; + + return buffer_size; } // HttpsServerState::HttpsServerState - Constructor /*{{{*/ -HttpsServerState::HttpsServerState(URI Srv,HttpsMethod * /*Owner*/) : ServerState(Srv, NULL) +HttpsServerState::HttpsServerState(URI Srv,HttpsMethod * Owner) : ServerState(Srv, Owner), Hash(NULL) { TimeOut = _config->FindI("Acquire::https::Timeout",TimeOut); Reset(); } /*}}}*/ +bool HttpsServerState::InitHashes(HashStringList const &ExpectedHashes) /*{{{*/ +{ + delete Hash; + Hash = new Hashes(ExpectedHashes); + return true; +} + /*}}}*/ +APT_PURE Hashes * HttpsServerState::GetHashes() /*{{{*/ +{ + return Hash; +} + /*}}}*/ -void HttpsMethod::SetupProxy() /*{{{*/ +void HttpsMethod::SetupProxy() /*{{{*/ { URI ServerName = Queue->Uri; @@ -144,13 +187,13 @@ void HttpsMethod::SetupProxy() /*{{{*/ if (UseProxy == "DIRECT") return; - if (UseProxy.empty() == false) + // Parse no_proxy, a comma (,) separated list of domains we don't want to use + // a proxy for so we stop right here if it is in the list + if (getenv("no_proxy") != 0 && CheckDomainList(ServerName.Host,getenv("no_proxy")) == true) + return; + + if (UseProxy.empty() == true) { - // Parse no_proxy, a comma (,) separated list of domains we don't want to use - // a proxy for so we stop right here if it is in the list - if (getenv("no_proxy") != 0 && CheckDomainList(ServerName.Host,getenv("no_proxy")) == true) - return; - } else { const char* result = getenv("https_proxy"); // FIXME: Fall back to http_proxy is to remain compatible with // existing setups and behaviour of apt.conf. This should be @@ -183,7 +226,7 @@ void HttpsMethod::SetupProxy() /*{{{*/ bool HttpsMethod::Fetch(FetchItem *Itm) { struct stat SBuf; - struct curl_slist *headers=NULL; + struct curl_slist *headers=NULL; char curl_errorstr[CURL_ERROR_SIZE]; URI Uri = Itm->Uri; string remotehost = Uri.Host; @@ -198,16 +241,16 @@ bool HttpsMethod::Fetch(FetchItem *Itm) maybe_add_auth (Uri, _config->FindFile("Dir::Etc::netrc")); + FetchResult Res; + CURLUserPointer userp(this, &Res, Itm); // callbacks curl_easy_setopt(curl, CURLOPT_URL, static_cast(Uri).c_str()); curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION, parse_header); - curl_easy_setopt(curl, CURLOPT_WRITEHEADER, this); + curl_easy_setopt(curl, CURLOPT_WRITEHEADER, &userp); curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_data); curl_easy_setopt(curl, CURLOPT_WRITEDATA, this); - curl_easy_setopt(curl, CURLOPT_PROGRESSFUNCTION, progress_callback); - curl_easy_setopt(curl, CURLOPT_PROGRESSDATA, this); // options - curl_easy_setopt(curl, CURLOPT_NOPROGRESS, false); + curl_easy_setopt(curl, CURLOPT_NOPROGRESS, true); curl_easy_setopt(curl, CURLOPT_FILETIME, true); // only allow curl to handle https, not the other stuff it supports curl_easy_setopt(curl, CURLOPT_PROTOCOLS, CURLPROTO_HTTPS); @@ -316,13 +359,11 @@ bool HttpsMethod::Fetch(FetchItem *Itm) curl_easy_setopt(curl, CURLOPT_LOW_SPEED_TIME, timeout); // set redirect options and default to 10 redirects - bool const AllowRedirect = _config->FindB("Acquire::https::AllowRedirect", - _config->FindB("Acquire::http::AllowRedirect",true)); curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, AllowRedirect); curl_easy_setopt(curl, CURLOPT_MAXREDIRS, 10); // debug - if(_config->FindB("Debug::Acquire::https", false)) + if (Debug == true) curl_easy_setopt(curl, CURLOPT_VERBOSE, true); // error handling @@ -359,7 +400,9 @@ bool HttpsMethod::Fetch(FetchItem *Itm) // go for it - if the file exists, append on it File = new FileFd(Itm->DestFile, FileFd::WriteAny); - Server = new HttpsServerState(Itm->Uri, this); + Server = CreateServerState(Itm->Uri); + if (Server->InitHashes(Itm->ExpectedHashes) == false) + return false; // keep apt updated Res.Filename = Itm->DestFile; @@ -376,17 +419,31 @@ bool HttpsMethod::Fetch(FetchItem *Itm) curl_slist_free_all(headers); // cleanup - if (success != 0) + if (success != CURLE_OK) { - _error->Error("%s", curl_errorstr); - unlink(File->Name().c_str()); - return false; +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wswitch" + switch (success) + { + case CURLE_COULDNT_RESOLVE_PROXY: + case CURLE_COULDNT_RESOLVE_HOST: + SetFailReason("ResolveFailure"); + break; + case CURLE_COULDNT_CONNECT: + SetFailReason("ConnectionRefused"); + break; + case CURLE_OPERATION_TIMEDOUT: + SetFailReason("Timeout"); + break; + } +#pragma GCC diagnostic pop + return _error->Error("%s", curl_errorstr); } // server says file not modified if (Server->Result == 304 || curl_condition_unmet == 1) { - unlink(File->Name().c_str()); + RemoveFile("https", File->Name()); Res.IMSHit = true; Res.LastModified = Itm->LastModified; Res.Size = 0; @@ -402,30 +459,29 @@ bool HttpsMethod::Fetch(FetchItem *Itm) char err[255]; snprintf(err, sizeof(err) - 1, "HttpError%i", Server->Result); SetFailReason(err); - _error->Error("%s", err); + _error->Error("%i %s", Server->Result, Server->Code); // unlink, no need keep 401/404 page content in partial/ - unlink(File->Name().c_str()); - return false; - } - - struct stat resultStat; - if (unlikely(stat(File->Name().c_str(), &resultStat) != 0)) - { - _error->Errno("stat", "Unable to access file %s", File->Name().c_str()); + RemoveFile("https", File->Name()); return false; } - Res.Size = resultStat.st_size; // invalid range-request if (Server->Result == 416) { - unlink(File->Name().c_str()); - Res.Size = 0; + RemoveFile("https", File->Name()); delete File; Redirect(Itm->Uri); return true; } + struct stat resultStat; + if (unlikely(stat(File->Name().c_str(), &resultStat) != 0)) + { + _error->Errno("stat", "Unable to access file %s", File->Name().c_str()); + return false; + } + Res.Size = resultStat.st_size; + // Timestamp curl_easy_getinfo(curl, CURLINFO_FILETIME, &Res.LastModified); if (Res.LastModified != -1) @@ -440,20 +496,35 @@ bool HttpsMethod::Fetch(FetchItem *Itm) Res.LastModified = resultStat.st_mtime; // take hashes - Hashes Hash; - FileFd Fd(Res.Filename, FileFd::ReadOnly); - Hash.AddFD(Fd); - Res.TakeHashes(Hash); + Res.TakeHashes(*(Server->GetHashes())); // keep apt updated URIDone(Res); // cleanup - Res.Size = 0; delete File; return true; } + /*}}}*/ +// HttpsMethod::Configuration - Handle a configuration message /*{{{*/ +bool HttpsMethod::Configuration(string Message) +{ + if (ServerMethod::Configuration(Message) == false) + return false; + + AllowRedirect = _config->FindB("Acquire::https::AllowRedirect", + _config->FindB("Acquire::http::AllowRedirect", true)); + Debug = _config->FindB("Debug::Acquire::https",false); + + return true; +} + /*}}}*/ +std::unique_ptr HttpsMethod::CreateServerState(URI const &uri)/*{{{*/ +{ + return std::unique_ptr(new HttpsServerState(uri, this)); +} + /*}}}*/ int main() {