X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/05f64ca2e483709faa6bc69dfa79129d2d4c679e..2853201580944cb4e5a2a8a810e800e89e9a0475:/methods/server.cc?ds=sidebyside diff --git a/methods/server.cc b/methods/server.cc index 2116926b0..b323ef4f3 100644 --- a/methods/server.cc +++ b/methods/server.cc @@ -54,7 +54,7 @@ ServerState::RunHeadersResult ServerState::RunHeaders(FileFd * const File, Major = 0; Minor = 0; Result = 0; - Size = 0; + TotalFileSize = 0; JunkSize = 0; StartPos = 0; Encoding = Closes; @@ -114,7 +114,7 @@ bool ServerState::HeaderLine(string Line) // Parse off any trailing spaces between the : and the next word. string::size_type Pos2 = Pos; - while (Pos2 < Line.length() && isspace(Line[Pos2]) != 0) + while (Pos2 < Line.length() && isspace_ascii(Line[Pos2]) != 0) Pos2++; string Tag = string(Line,0,Pos); @@ -150,9 +150,15 @@ bool ServerState::HeaderLine(string Line) else { if (Major == 1 && Minor == 0) + { Persistent = false; + } else + { Persistent = true; + if (PipelineAllowed) + Pipeline = true; + } } return true; @@ -164,15 +170,22 @@ bool ServerState::HeaderLine(string Line) Encoding = Stream; HaveContent = true; - unsigned long long * SizePtr = &Size; + unsigned long long * DownloadSizePtr = &DownloadSize; if (Result == 416) - SizePtr = &JunkSize; + DownloadSizePtr = &JunkSize; - *SizePtr = strtoull(Val.c_str(), NULL, 10); - if (*SizePtr >= std::numeric_limits::max()) + *DownloadSizePtr = strtoull(Val.c_str(), NULL, 10); + if (*DownloadSizePtr >= std::numeric_limits::max()) return _error->Errno("HeaderLine", _("The HTTP server sent an invalid Content-Length header")); - else if (*SizePtr == 0) + else if (*DownloadSizePtr == 0) HaveContent = false; + + // On partial content (206) the Content-Length less than the real + // size, so do not set it here but leave that to the Content-Range + // header instead + if(Result != 206 && TotalFileSize == 0) + TotalFileSize = DownloadSize; + return true; } @@ -187,12 +200,15 @@ bool ServerState::HeaderLine(string Line) HaveContent = true; // §14.16 says 'byte-range-resp-spec' should be a '*' in case of 416 - if (Result == 416 && sscanf(Val.c_str(), "bytes */%llu",&Size) == 1) + if (Result == 416 && sscanf(Val.c_str(), "bytes */%llu",&TotalFileSize) == 1) ; // we got the expected filesize which is all we wanted - else if (sscanf(Val.c_str(),"bytes %llu-%*u/%llu",&StartPos,&Size) != 2) + else if (sscanf(Val.c_str(),"bytes %llu-%*u/%llu",&StartPos,&TotalFileSize) != 2) return _error->Error(_("The HTTP server sent an invalid Content-Range header")); - if ((unsigned long long)StartPos > Size) + if ((unsigned long long)StartPos > TotalFileSize) return _error->Error(_("This HTTP server has broken range support")); + + // figure out what we will download + DownloadSize = TotalFileSize - StartPos; return true; } @@ -230,7 +246,8 @@ bool ServerState::HeaderLine(string Line) } /*}}}*/ // ServerState::ServerState - Constructor /*{{{*/ -ServerState::ServerState(URI Srv, ServerMethod *Owner) : ServerName(Srv), TimeOut(120), Owner(Owner) +ServerState::ServerState(URI Srv, ServerMethod *Owner) : + DownloadSize(0), ServerName(Srv), TimeOut(120), Owner(Owner) { Reset(); } @@ -242,17 +259,6 @@ bool ServerState::AddPartialFileToHashes(FileFd &File) /*{{{*/ } /*}}}*/ -bool ServerMethod::Configuration(string Message) /*{{{*/ -{ - if (pkgAcqMethod::Configuration(Message) == false) - return false; - - DropPrivsOrDie(); - - return true; -} - /*}}}*/ - // ServerMethod::DealWithHeaders - Handle the retrieved header data /*{{{*/ // --------------------------------------------------------------------- /* We look at the header data we got back from the server and decide what @@ -264,12 +270,12 @@ ServerMethod::DealWithHeaders(FetchResult &Res) // Not Modified if (Server->Result == 304) { - unlink(Queue->DestFile.c_str()); + RemoveFile("server", Queue->DestFile); Res.IMSHit = true; Res.LastModified = Queue->LastModified; return IMS_HIT; } - + /* Redirect * * Note that it is only OK for us to treat all redirection the same @@ -314,7 +320,20 @@ ServerMethod::DealWithHeaders(FetchResult &Res) struct stat SBuf; if (stat(Queue->DestFile.c_str(),&SBuf) >= 0 && SBuf.st_size > 0) { - if ((unsigned long long)SBuf.st_size == Server->Size) + bool partialHit = false; + if (Queue->ExpectedHashes.usable() == true) + { + Hashes resultHashes(Queue->ExpectedHashes); + FileFd file(Queue->DestFile, FileFd::ReadOnly); + Server->TotalFileSize = file.FileSize(); + Server->Date = file.ModificationTime(); + resultHashes.AddFD(file); + HashStringList const hashList = resultHashes.GetHashStringList(); + partialHit = (Queue->ExpectedHashes == hashList); + } + else if ((unsigned long long)SBuf.st_size == Server->TotalFileSize) + partialHit = true; + if (partialHit == true) { // the file is completely downloaded, but was not moved if (Server->HaveContent == true) @@ -324,10 +343,10 @@ ServerMethod::DealWithHeaders(FetchResult &Res) Server->RunData(&DevNull); } Server->HaveContent = false; - Server->StartPos = Server->Size; + Server->StartPos = Server->TotalFileSize; Server->Result = 200; } - else if (unlink(Queue->DestFile.c_str()) == 0) + else if (RemoveFile("server", Queue->DestFile)) { NextURI = Queue->Uri; return TRY_AGAIN_OR_REDIRECT; @@ -335,7 +354,7 @@ ServerMethod::DealWithHeaders(FetchResult &Res) } } - /* We have a reply we dont handle. This should indicate a perm server + /* We have a reply we don't handle. This should indicate a perm server failure */ if (Server->Result < 200 || Server->Result >= 300) { @@ -350,7 +369,7 @@ ServerMethod::DealWithHeaders(FetchResult &Res) // This is some sort of 2xx 'data follows' reply Res.LastModified = Server->Date; - Res.Size = Server->Size; + Res.Size = Server->TotalFileSize; // Open the file delete File; @@ -359,7 +378,7 @@ ServerMethod::DealWithHeaders(FetchResult &Res) return ERROR_NOT_FROM_SERVER; FailFile = Queue->DestFile; - FailFile.c_str(); // Make sure we dont do a malloc in the signal handler + FailFile.c_str(); // Make sure we don't do a malloc in the signal handler FailFd = File->Fd(); FailTime = Server->Date; @@ -400,36 +419,66 @@ void ServerMethod::SigTerm(int) depth. */ bool ServerMethod::Fetch(FetchItem *) { - if (Server == 0) + if (Server == nullptr || QueueBack == nullptr) return true; - // Queue the requests - int Depth = -1; - for (FetchItem *I = Queue; I != 0 && Depth < (signed)PipelineDepth; - I = I->Next, Depth++) - { - if (Depth >= 0) - { - // If pipelining is disabled, we only queue 1 request - if (Server->Pipeline == false) - break; - // if we have no hashes, do at most one such request - // as we can't fixup pipeling misbehaviors otherwise - else if (I->ExpectedHashes.usable() == false) - break; - } - + // If pipelining is disabled, we only queue 1 request + auto const AllowedDepth = Server->Pipeline ? PipelineDepth : 0; + // how deep is our pipeline currently? + decltype(PipelineDepth) CurrentDepth = 0; + for (FetchItem const *I = Queue; I != QueueBack; I = I->Next) + ++CurrentDepth; + + do { // Make sure we stick with the same server - if (Server->Comp(I->Uri) == false) + if (Server->Comp(QueueBack->Uri) == false) + break; + + bool const UsableHashes = QueueBack->ExpectedHashes.usable(); + // if we have no hashes, do at most one such request + // as we can't fixup pipeling misbehaviors otherwise + if (CurrentDepth != 0 && UsableHashes == false) break; - if (QueueBack == I) + + if (UsableHashes && FileExists(QueueBack->DestFile)) { - QueueBack = I->Next; - SendReq(I); - continue; + FileFd partial(QueueBack->DestFile, FileFd::ReadOnly); + Hashes wehave(QueueBack->ExpectedHashes); + if (QueueBack->ExpectedHashes.FileSize() == partial.FileSize()) + { + if (wehave.AddFD(partial) && + wehave.GetHashStringList() == QueueBack->ExpectedHashes) + { + FetchResult Res; + Res.Filename = QueueBack->DestFile; + Res.ResumePoint = QueueBack->ExpectedHashes.FileSize(); + URIStart(Res); + // move item to the start of the queue as URIDone will + // always dequeued the first item in the queue + if (Queue != QueueBack) + { + FetchItem *Prev = Queue; + for (; Prev->Next != QueueBack; Prev = Prev->Next) + /* look for the previous queue item */; + Prev->Next = QueueBack->Next; + QueueBack->Next = Queue; + Queue = QueueBack; + QueueBack = Prev->Next; + } + Res.TakeHashes(wehave); + URIDone(Res); + continue; + } + else + RemoveFile("Fetch-Partial", QueueBack->DestFile); + } } - } - + auto const Tmp = QueueBack; + QueueBack = QueueBack->Next; + SendReq(Tmp); + ++CurrentDepth; + } while (CurrentDepth <= AllowedDepth && QueueBack != nullptr); + return true; } /*}}}*/ @@ -472,10 +521,8 @@ int ServerMethod::Loop() // Connect to the server if (Server == 0 || Server->Comp(Queue->Uri) == false) - { - delete Server; Server = CreateServerState(Queue->Uri); - } + /* If the server has explicitly said this is the last connection then we pre-emptively shut down the pipeline and tear down the connection. This will speed up HTTP/1.0 servers a tad @@ -492,8 +539,7 @@ int ServerMethod::Loop() if (Server->Open() == false) { Fail(true); - delete Server; - Server = 0; + Server = nullptr; continue; } @@ -523,6 +569,7 @@ int ServerMethod::Loop() _error->Discard(); Server->Close(); Server->Pipeline = false; + Server->PipelineAllowed = false; if (FailCounter >= 2) { @@ -595,6 +642,7 @@ int ServerMethod::Loop() strprintf(out, _("Automatically disabled %s due to incorrect response from server/proxy. (man 5 apt.conf)"), "Acquire::http::PipelineDepth"); std::cerr << "W: " << out << std::endl; Server->Pipeline = false; + Server->PipelineAllowed = false; // we keep the PipelineDepth value so that the rest of the queue can be fixed up as well } Rename(Res.Filename, I->DestFile); @@ -725,9 +773,7 @@ int ServerMethod::Loop() return 0; } /*}}}*/ - /*{{{*/ -unsigned long long -ServerMethod::FindMaximumObjectSizeInQueue() const +unsigned long long ServerMethod::FindMaximumObjectSizeInQueue() const /*{{{*/ { unsigned long long MaxSizeInQueue = 0; for (FetchItem *I = Queue; I != 0 && I != QueueBack; I = I->Next) @@ -735,3 +781,9 @@ ServerMethod::FindMaximumObjectSizeInQueue() const return MaxSizeInQueue; } /*}}}*/ +ServerMethod::ServerMethod(char const * const Binary, char const * const Ver,unsigned long const Flags) :/*{{{*/ + aptMethod(Binary, Ver, Flags), Server(nullptr), File(NULL), PipelineDepth(10), + AllowRedirect(false), Debug(false) +{ +} + /*}}}*/