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-rw-r--r--apt-pkg/acquire-worker.cc818
1 files changed, 818 insertions, 0 deletions
diff --git a/apt-pkg/acquire-worker.cc b/apt-pkg/acquire-worker.cc
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+// -*- mode: cpp; mode: fold -*-
+// Description /*{{{*/
+// $Id: acquire-worker.cc,v 1.34 2001/05/22 04:42:54 jgg Exp $
+/* ######################################################################
+
+ Acquire Worker
+
+ The worker process can startup either as a Configuration prober
+ or as a queue runner. As a configuration prober it only reads the
+ configuration message and
+
+ ##################################################################### */
+ /*}}}*/
+// Include Files /*{{{*/
+#include <config.h>
+
+#include <apt-pkg/acquire.h>
+#include <apt-pkg/acquire-worker.h>
+#include <apt-pkg/acquire-item.h>
+#include <apt-pkg/configuration.h>
+#include <apt-pkg/error.h>
+#include <apt-pkg/fileutl.h>
+#include <apt-pkg/strutl.h>
+#include <apt-pkg/hashes.h>
+
+#include <algorithm>
+#include <string>
+#include <vector>
+#include <iostream>
+
+#include <sys/stat.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <signal.h>
+#include <stdio.h>
+#include <errno.h>
+#include <sstream>
+
+#include <apti18n.h>
+ /*}}}*/
+
+using namespace std;
+
+// Worker::Worker - Constructor for Queue startup /*{{{*/
+pkgAcquire::Worker::Worker(Queue *Q, MethodConfig *Cnf, pkgAcquireStatus *log) :
+ d(NULL), OwnerQ(Q), Log(log), Config(Cnf), Access(Cnf->Access),
+ CurrentItem(nullptr), CurrentSize(0), TotalSize(0)
+{
+ Construct();
+}
+ /*}}}*/
+// Worker::Worker - Constructor for method config startup /*{{{*/
+pkgAcquire::Worker::Worker(MethodConfig *Cnf) : Worker(nullptr, Cnf, nullptr)
+{
+}
+ /*}}}*/
+// Worker::Construct - Constructor helper /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+void pkgAcquire::Worker::Construct()
+{
+ NextQueue = 0;
+ NextAcquire = 0;
+ Process = -1;
+ InFd = -1;
+ OutFd = -1;
+ OutReady = false;
+ InReady = false;
+ Debug = _config->FindB("Debug::pkgAcquire::Worker",false);
+}
+ /*}}}*/
+// Worker::~Worker - Destructor /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+pkgAcquire::Worker::~Worker()
+{
+ close(InFd);
+ close(OutFd);
+
+ if (Process > 0)
+ {
+ /* Closing of stdin is the signal to exit and die when the process
+ indicates it needs cleanup */
+ if (Config->NeedsCleanup == false)
+ kill(Process,SIGINT);
+ ExecWait(Process,Access.c_str(),true);
+ }
+}
+ /*}}}*/
+// Worker::Start - Start the worker process /*{{{*/
+// ---------------------------------------------------------------------
+/* This forks the method and inits the communication channel */
+bool pkgAcquire::Worker::Start()
+{
+ // Get the method path
+ constexpr char const * const methodsDir = "Dir::Bin::Methods";
+ std::string const confItem = std::string(methodsDir) + "::" + Access;
+ std::string Method;
+ if (_config->Exists(confItem))
+ Method = _config->FindFile(confItem.c_str());
+ else
+ Method = _config->FindDir(methodsDir) + Access;
+ if (FileExists(Method) == false)
+ {
+ if (flNotDir(Method) == "false")
+ {
+ _error->Error(_("The method '%s' is explicitly disabled via configuration."), Access.c_str());
+ if (Access == "http" || Access == "https")
+ _error->Notice(_("If you meant to use Tor remember to use %s instead of %s."), ("tor+" + Access).c_str(), Access.c_str());
+ return false;
+ }
+ _error->Error(_("The method driver %s could not be found."),Method.c_str());
+ std::string const A(Access.cbegin(), std::find(Access.cbegin(), Access.cend(), '+'));
+ std::string pkg;
+ strprintf(pkg, "apt-transport-%s", A.c_str());
+ _error->Notice(_("Is the package %s installed?"), pkg.c_str());
+ return false;
+ }
+ std::string const Calling = _config->FindDir(methodsDir) + Access;
+
+ if (Debug == true)
+ {
+ std::clog << "Starting method '" << Calling << "'";
+ if (Calling != Method)
+ std::clog << " ( via " << Method << " )";
+ std::clog << endl;
+ }
+
+ // Create the pipes
+ int Pipes[4] = {-1,-1,-1,-1};
+ if (pipe(Pipes) != 0 || pipe(Pipes+2) != 0)
+ {
+ _error->Errno("pipe","Failed to create IPC pipe to subprocess");
+ for (int I = 0; I != 4; I++)
+ close(Pipes[I]);
+ return false;
+ }
+ for (int I = 0; I != 4; I++)
+ SetCloseExec(Pipes[I],true);
+
+ // Fork off the process
+ Process = ExecFork();
+ if (Process == 0)
+ {
+ // Setup the FDs
+ dup2(Pipes[1],STDOUT_FILENO);
+ dup2(Pipes[2],STDIN_FILENO);
+ SetCloseExec(STDOUT_FILENO,false);
+ SetCloseExec(STDIN_FILENO,false);
+ SetCloseExec(STDERR_FILENO,false);
+
+ const char * const Args[] = { Calling.c_str(), nullptr };
+ execv(Method.c_str() ,const_cast<char **>(Args));
+ std::cerr << "Failed to exec method " << Calling << " ( via " << Method << ")" << endl;
+ _exit(100);
+ }
+
+ // Fix up our FDs
+ InFd = Pipes[0];
+ OutFd = Pipes[3];
+ SetNonBlock(Pipes[0],true);
+ SetNonBlock(Pipes[3],true);
+ close(Pipes[1]);
+ close(Pipes[2]);
+ OutReady = false;
+ InReady = true;
+
+ // Read the configuration data
+ if (WaitFd(InFd) == false ||
+ ReadMessages() == false)
+ return _error->Error(_("Method %s did not start correctly"),Method.c_str());
+
+ RunMessages();
+ if (OwnerQ != 0)
+ SendConfiguration();
+
+ return true;
+}
+ /*}}}*/
+// Worker::ReadMessages - Read all pending messages into the list /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool pkgAcquire::Worker::ReadMessages()
+{
+ if (::ReadMessages(InFd,MessageQueue) == false)
+ return MethodFailure();
+ return true;
+}
+ /*}}}*/
+// Worker::RunMessage - Empty the message queue /*{{{*/
+// ---------------------------------------------------------------------
+/* This takes the messages from the message queue and runs them through
+ the parsers in order. */
+enum class APT_HIDDEN MessageType {
+ CAPABILITIES = 100,
+ LOG = 101,
+ STATUS = 102,
+ REDIRECT = 103,
+ WARNING = 104,
+ URI_START = 200,
+ URI_DONE = 201,
+ URI_FAILURE = 400,
+ GENERAL_FAILURE = 401,
+ MEDIA_CHANGE = 403
+};
+static bool isDoomedItem(pkgAcquire::Item const * const Itm)
+{
+ auto const TransItm = dynamic_cast<pkgAcqTransactionItem const * const>(Itm);
+ if (TransItm == nullptr)
+ return false;
+ return TransItm->TransactionManager->State != pkgAcqTransactionItem::TransactionStarted;
+}
+bool pkgAcquire::Worker::RunMessages()
+{
+ while (MessageQueue.empty() == false)
+ {
+ string Message = MessageQueue.front();
+ MessageQueue.erase(MessageQueue.begin());
+
+ if (Debug == true)
+ clog << " <- " << Access << ':' << QuoteString(Message,"\n") << endl;
+
+ // Fetch the message number
+ char *End;
+ MessageType const Number = static_cast<MessageType>(strtoul(Message.c_str(),&End,10));
+ if (End == Message.c_str())
+ return _error->Error("Invalid message from method %s: %s",Access.c_str(),Message.c_str());
+
+ string URI = LookupTag(Message,"URI");
+ pkgAcquire::Queue::QItem *Itm = NULL;
+ if (URI.empty() == false)
+ Itm = OwnerQ->FindItem(URI,this);
+
+ if (Itm != NULL)
+ {
+ // update used mirror
+ string UsedMirror = LookupTag(Message,"UsedMirror", "");
+ if (UsedMirror.empty() == false)
+ {
+ for (pkgAcquire::Queue::QItem::owner_iterator O = Itm->Owners.begin(); O != Itm->Owners.end(); ++O)
+ (*O)->UsedMirror = UsedMirror;
+
+ if (Itm->Description.find(" ") != string::npos)
+ Itm->Description.replace(0, Itm->Description.find(" "), UsedMirror);
+ }
+ }
+
+ // Determine the message number and dispatch
+ switch (Number)
+ {
+ case MessageType::CAPABILITIES:
+ if (Capabilities(Message) == false)
+ return _error->Error("Unable to process Capabilities message from %s",Access.c_str());
+ break;
+
+ case MessageType::LOG:
+ if (Debug == true)
+ clog << " <- (log) " << LookupTag(Message,"Message") << endl;
+ break;
+
+ case MessageType::STATUS:
+ Status = LookupTag(Message,"Message");
+ break;
+
+ case MessageType::REDIRECT:
+ {
+ if (Itm == nullptr)
+ {
+ _error->Error("Method gave invalid 103 Redirect message");
+ break;
+ }
+
+ std::string const NewURI = LookupTag(Message,"New-URI",URI.c_str());
+ Itm->URI = NewURI;
+
+ ItemDone();
+
+ // Change the status so that it can be dequeued
+ for (auto const &O: Itm->Owners)
+ O->Status = pkgAcquire::Item::StatIdle;
+ // Mark the item as done (taking care of all queues)
+ // and then put it in the main queue again
+ std::vector<Item*> const ItmOwners = Itm->Owners;
+ OwnerQ->ItemDone(Itm);
+ Itm = nullptr;
+ for (auto const &Owner: ItmOwners)
+ {
+ pkgAcquire::ItemDesc &desc = Owner->GetItemDesc();
+ if (Owner->IsRedirectionLoop(NewURI))
+ {
+ std::string msg = Message;
+ msg.append("\nFailReason: RedirectionLoop");
+ Owner->Failed(msg, Config);
+ if (Log != nullptr)
+ Log->Fail(Owner->GetItemDesc());
+ continue;
+ }
+
+ if (Log != nullptr)
+ Log->Done(desc);
+
+ // if we change site, treat it as a mirror change
+ if (URI::SiteOnly(NewURI) != URI::SiteOnly(desc.URI))
+ {
+ auto const firstSpace = desc.Description.find(" ");
+ if (firstSpace != std::string::npos)
+ {
+ std::string const OldSite = desc.Description.substr(0, firstSpace);
+ if (likely(APT::String::Startswith(desc.URI, OldSite)))
+ {
+ std::string const OldExtra = desc.URI.substr(OldSite.length() + 1);
+ if (likely(APT::String::Endswith(NewURI, OldExtra)))
+ {
+ std::string const NewSite = NewURI.substr(0, NewURI.length() - OldExtra.length());
+ Owner->UsedMirror = URI::ArchiveOnly(NewSite);
+ desc.Description.replace(0, firstSpace, Owner->UsedMirror);
+ }
+ }
+ }
+ }
+ desc.URI = NewURI;
+ if (isDoomedItem(Owner) == false)
+ OwnerQ->Owner->Enqueue(desc);
+ }
+ break;
+ }
+
+ case MessageType::WARNING:
+ _error->Warning("%s: %s", Itm->Owner->DescURI().c_str(), LookupTag(Message,"Message").c_str());
+ break;
+
+ case MessageType::URI_START:
+ {
+ if (Itm == nullptr)
+ {
+ _error->Error("Method gave invalid 200 URI Start message");
+ break;
+ }
+
+ CurrentItem = Itm;
+ CurrentSize = 0;
+ TotalSize = strtoull(LookupTag(Message,"Size","0").c_str(), NULL, 10);
+ ResumePoint = strtoull(LookupTag(Message,"Resume-Point","0").c_str(), NULL, 10);
+ for (auto const Owner: Itm->Owners)
+ {
+ Owner->Start(Message, TotalSize);
+ // Display update before completion
+ if (Log != nullptr)
+ {
+ if (Log->MorePulses == true)
+ Log->Pulse(Owner->GetOwner());
+ Log->Fetch(Owner->GetItemDesc());
+ }
+ }
+
+ break;
+ }
+
+ case MessageType::URI_DONE:
+ {
+ if (Itm == nullptr)
+ {
+ _error->Error("Method gave invalid 201 URI Done message");
+ break;
+ }
+
+ PrepareFiles("201::URIDone", Itm);
+
+ // Display update before completion
+ if (Log != 0 && Log->MorePulses == true)
+ for (pkgAcquire::Queue::QItem::owner_iterator O = Itm->Owners.begin(); O != Itm->Owners.end(); ++O)
+ Log->Pulse((*O)->GetOwner());
+
+ HashStringList ReceivedHashes;
+ {
+ std::string const givenfilename = LookupTag(Message, "Filename");
+ std::string const filename = givenfilename.empty() ? Itm->Owner->DestFile : givenfilename;
+ // see if we got hashes to verify
+ for (char const * const * type = HashString::SupportedHashes(); *type != NULL; ++type)
+ {
+ std::string const tagname = std::string(*type) + "-Hash";
+ std::string const hashsum = LookupTag(Message, tagname.c_str());
+ if (hashsum.empty() == false)
+ ReceivedHashes.push_back(HashString(*type, hashsum));
+ }
+ // not all methods always sent Hashes our way
+ if (ReceivedHashes.usable() == false)
+ {
+ HashStringList const ExpectedHashes = Itm->GetExpectedHashes();
+ if (ExpectedHashes.usable() == true && RealFileExists(filename))
+ {
+ Hashes calc(ExpectedHashes);
+ FileFd file(filename, FileFd::ReadOnly, FileFd::None);
+ calc.AddFD(file);
+ ReceivedHashes = calc.GetHashStringList();
+ }
+ }
+
+ // only local files can refer other filenames and counting them as fetched would be unfair
+ if (Log != NULL && Itm->Owner->Complete == false && Itm->Owner->Local == false && givenfilename == filename)
+ Log->Fetched(ReceivedHashes.FileSize(),atoi(LookupTag(Message,"Resume-Point","0").c_str()));
+ }
+
+ std::vector<Item*> const ItmOwners = Itm->Owners;
+ OwnerQ->ItemDone(Itm);
+ Itm = NULL;
+
+ bool const isIMSHit = StringToBool(LookupTag(Message,"IMS-Hit"),false) ||
+ StringToBool(LookupTag(Message,"Alt-IMS-Hit"),false);
+ auto const forcedHash = _config->Find("Acquire::ForceHash");
+ for (auto const Owner: ItmOwners)
+ {
+ HashStringList const ExpectedHashes = Owner->GetExpectedHashes();
+ if(_config->FindB("Debug::pkgAcquire::Auth", false) == true)
+ {
+ std::clog << "201 URI Done: " << Owner->DescURI() << endl
+ << "ReceivedHash:" << endl;
+ for (HashStringList::const_iterator hs = ReceivedHashes.begin(); hs != ReceivedHashes.end(); ++hs)
+ std::clog << "\t- " << hs->toStr() << std::endl;
+ std::clog << "ExpectedHash:" << endl;
+ for (HashStringList::const_iterator hs = ExpectedHashes.begin(); hs != ExpectedHashes.end(); ++hs)
+ std::clog << "\t- " << hs->toStr() << std::endl;
+ std::clog << endl;
+ }
+
+ // decide if what we got is what we expected
+ bool consideredOkay = false;
+ if ((forcedHash.empty() && ExpectedHashes.empty() == false) ||
+ (forcedHash.empty() == false && ExpectedHashes.usable()))
+ {
+ if (ReceivedHashes.empty())
+ {
+ /* IMS-Hits can't be checked here as we will have uncompressed file,
+ but the hashes for the compressed file. What we have was good through
+ so all we have to ensure later is that we are not stalled. */
+ consideredOkay = isIMSHit;
+ }
+ else if (ReceivedHashes == ExpectedHashes)
+ consideredOkay = true;
+ else
+ consideredOkay = false;
+
+ }
+ else
+ consideredOkay = !Owner->HashesRequired();
+
+ if (consideredOkay == true)
+ consideredOkay = Owner->VerifyDone(Message, Config);
+ else // hashsum mismatch
+ Owner->Status = pkgAcquire::Item::StatAuthError;
+
+
+ if (consideredOkay == true)
+ {
+ if (isDoomedItem(Owner) == false)
+ Owner->Done(Message, ReceivedHashes, Config);
+ if (Log != nullptr)
+ {
+ if (isIMSHit)
+ Log->IMSHit(Owner->GetItemDesc());
+ else
+ Log->Done(Owner->GetItemDesc());
+ }
+ }
+ else
+ {
+ auto SavedDesc = Owner->GetItemDesc();
+ if (isDoomedItem(Owner) == false)
+ {
+ if (Message.find("\nFailReason:") == std::string::npos)
+ {
+ if (ReceivedHashes != ExpectedHashes)
+ Message.append("\nFailReason: HashSumMismatch");
+ else
+ Message.append("\nFailReason: WeakHashSums");
+ }
+ Owner->Failed(Message,Config);
+ }
+ if (Log != nullptr)
+ Log->Fail(SavedDesc);
+ }
+ }
+ ItemDone();
+ break;
+ }
+
+ case MessageType::URI_FAILURE:
+ {
+ if (Itm == nullptr)
+ {
+ std::string const msg = LookupTag(Message,"Message");
+ _error->Error("Method gave invalid 400 URI Failure message: %s", msg.c_str());
+ break;
+ }
+
+ PrepareFiles("400::URIFailure", Itm);
+
+ // Display update before completion
+ if (Log != nullptr && Log->MorePulses == true)
+ for (pkgAcquire::Queue::QItem::owner_iterator O = Itm->Owners.begin(); O != Itm->Owners.end(); ++O)
+ Log->Pulse((*O)->GetOwner());
+
+ std::vector<Item*> const ItmOwners = Itm->Owners;
+ OwnerQ->ItemDone(Itm);
+ Itm = nullptr;
+
+ bool errTransient = false, errAuthErr = false;
+ {
+ std::string const failReason = LookupTag(Message, "FailReason");
+ {
+ auto const reasons = { "Timeout", "ConnectionRefused",
+ "ConnectionTimedOut", "ResolveFailure", "TmpResolveFailure" };
+ errTransient = std::find(std::begin(reasons), std::end(reasons), failReason) != std::end(reasons);
+ }
+ if (errTransient == false)
+ {
+ auto const reasons = { "HashSumMismatch", "WeakHashSums", "MaximumSizeExceeded" };
+ errAuthErr = std::find(std::begin(reasons), std::end(reasons), failReason) != std::end(reasons);
+ }
+ }
+
+ for (auto const Owner: ItmOwners)
+ {
+ if (errAuthErr && Owner->GetExpectedHashes().empty() == false)
+ Owner->Status = pkgAcquire::Item::StatAuthError;
+ else if (errTransient)
+ Owner->Status = pkgAcquire::Item::StatTransientNetworkError;
+ auto SavedDesc = Owner->GetItemDesc();
+ if (isDoomedItem(Owner) == false)
+ Owner->Failed(Message,Config);
+ if (Log != nullptr)
+ Log->Fail(SavedDesc);
+ }
+ ItemDone();
+
+ break;
+ }
+
+ case MessageType::GENERAL_FAILURE:
+ _error->Error("Method %s General failure: %s",Access.c_str(),LookupTag(Message,"Message").c_str());
+ break;
+
+ case MessageType::MEDIA_CHANGE:
+ MediaChange(Message);
+ break;
+ }
+ }
+ return true;
+}
+ /*}}}*/
+// Worker::Capabilities - 100 Capabilities handler /*{{{*/
+// ---------------------------------------------------------------------
+/* This parses the capabilities message and dumps it into the configuration
+ structure. */
+bool pkgAcquire::Worker::Capabilities(string Message)
+{
+ if (Config == 0)
+ return true;
+
+ Config->Version = LookupTag(Message,"Version");
+ Config->SingleInstance = StringToBool(LookupTag(Message,"Single-Instance"),false);
+ Config->Pipeline = StringToBool(LookupTag(Message,"Pipeline"),false);
+ Config->SendConfig = StringToBool(LookupTag(Message,"Send-Config"),false);
+ Config->LocalOnly = StringToBool(LookupTag(Message,"Local-Only"),false);
+ Config->NeedsCleanup = StringToBool(LookupTag(Message,"Needs-Cleanup"),false);
+ Config->Removable = StringToBool(LookupTag(Message,"Removable"),false);
+
+ // Some debug text
+ if (Debug == true)
+ {
+ clog << "Configured access method " << Config->Access << endl;
+ clog << "Version:" << Config->Version <<
+ " SingleInstance:" << Config->SingleInstance <<
+ " Pipeline:" << Config->Pipeline <<
+ " SendConfig:" << Config->SendConfig <<
+ " LocalOnly: " << Config->LocalOnly <<
+ " NeedsCleanup: " << Config->NeedsCleanup <<
+ " Removable: " << Config->Removable << endl;
+ }
+
+ return true;
+}
+ /*}}}*/
+// Worker::MediaChange - Request a media change /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool pkgAcquire::Worker::MediaChange(string Message)
+{
+ int status_fd = _config->FindI("APT::Status-Fd",-1);
+ if(status_fd > 0)
+ {
+ string Media = LookupTag(Message,"Media");
+ string Drive = LookupTag(Message,"Drive");
+ ostringstream msg,status;
+ ioprintf(msg,_("Please insert the disc labeled: "
+ "'%s' "
+ "in the drive '%s' and press [Enter]."),
+ Media.c_str(),Drive.c_str());
+ status << "media-change: " // message
+ << Media << ":" // media
+ << Drive << ":" // drive
+ << msg.str() // l10n message
+ << endl;
+
+ std::string const dlstatus = status.str();
+ FileFd::Write(status_fd, dlstatus.c_str(), dlstatus.size());
+ }
+
+ if (Log == 0 || Log->MediaChange(LookupTag(Message,"Media"),
+ LookupTag(Message,"Drive")) == false)
+ {
+ char S[300];
+ snprintf(S,sizeof(S),"603 Media Changed\nFailed: true\n\n");
+ if (Debug == true)
+ clog << " -> " << Access << ':' << QuoteString(S,"\n") << endl;
+ OutQueue += S;
+ OutReady = true;
+ return true;
+ }
+
+ char S[300];
+ snprintf(S,sizeof(S),"603 Media Changed\n\n");
+ if (Debug == true)
+ clog << " -> " << Access << ':' << QuoteString(S,"\n") << endl;
+ OutQueue += S;
+ OutReady = true;
+ return true;
+}
+ /*}}}*/
+// Worker::SendConfiguration - Send the config to the method /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool pkgAcquire::Worker::SendConfiguration()
+{
+ if (Config->SendConfig == false)
+ return true;
+
+ if (OutFd == -1)
+ return false;
+
+ /* Write out all of the configuration directives by walking the
+ configuration tree */
+ std::ostringstream Message;
+ Message << "601 Configuration\n";
+ _config->Dump(Message, NULL, "Config-Item: %F=%V\n", false);
+ Message << '\n';
+
+ if (Debug == true)
+ clog << " -> " << Access << ':' << QuoteString(Message.str(),"\n") << endl;
+ OutQueue += Message.str();
+ OutReady = true;
+
+ return true;
+}
+ /*}}}*/
+// Worker::QueueItem - Add an item to the outbound queue /*{{{*/
+// ---------------------------------------------------------------------
+/* Send a URI Acquire message to the method */
+bool pkgAcquire::Worker::QueueItem(pkgAcquire::Queue::QItem *Item)
+{
+ if (OutFd == -1)
+ return false;
+
+ if (isDoomedItem(Item->Owner))
+ return true;
+
+ Item->SyncDestinationFiles();
+
+ string Message = "600 URI Acquire\n";
+ Message.reserve(300);
+ Message += "URI: " + Item->URI;
+ Message += "\nFilename: " + Item->Owner->DestFile;
+
+ HashStringList const hsl = Item->GetExpectedHashes();
+ for (HashStringList::const_iterator hs = hsl.begin(); hs != hsl.end(); ++hs)
+ Message += "\nExpected-" + hs->HashType() + ": " + hs->HashValue();
+
+ Message += Item->Custom600Headers();
+
+ if (hsl.FileSize() == 0 && Message.find("\nMaximum-Size: ") == std::string::npos)
+ {
+ unsigned long long FileSize = Item->GetMaximumSize();
+ if(FileSize > 0)
+ {
+ string MaximumSize;
+ strprintf(MaximumSize, "%llu", FileSize);
+ Message += "\nMaximum-Size: " + MaximumSize;
+ }
+ }
+
+ Message += "\n\n";
+
+ if (RealFileExists(Item->Owner->DestFile))
+ {
+ std::string const SandboxUser = _config->Find("APT::Sandbox::User");
+ ChangeOwnerAndPermissionOfFile("Item::QueueURI", Item->Owner->DestFile.c_str(),
+ SandboxUser.c_str(), ROOT_GROUP, 0600);
+ }
+
+ if (Debug == true)
+ clog << " -> " << Access << ':' << QuoteString(Message,"\n") << endl;
+ OutQueue += Message;
+ OutReady = true;
+
+ return true;
+}
+ /*}}}*/
+// Worker::OutFdRead - Out bound FD is ready /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool pkgAcquire::Worker::OutFdReady()
+{
+ int Res;
+ do
+ {
+ Res = write(OutFd,OutQueue.c_str(),OutQueue.length());
+ }
+ while (Res < 0 && errno == EINTR);
+
+ if (Res <= 0)
+ return MethodFailure();
+
+ OutQueue.erase(0,Res);
+ if (OutQueue.empty() == true)
+ OutReady = false;
+
+ return true;
+}
+ /*}}}*/
+// Worker::InFdRead - In bound FD is ready /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool pkgAcquire::Worker::InFdReady()
+{
+ if (ReadMessages() == false)
+ return false;
+ RunMessages();
+ return true;
+}
+ /*}}}*/
+// Worker::MethodFailure - Called when the method fails /*{{{*/
+// ---------------------------------------------------------------------
+/* This is called when the method is believed to have failed, probably because
+ read returned -1. */
+bool pkgAcquire::Worker::MethodFailure()
+{
+ _error->Error("Method %s has died unexpectedly!",Access.c_str());
+
+ // do not reap the child here to show meaningfull error to the user
+ ExecWait(Process,Access.c_str(),false);
+ Process = -1;
+ close(InFd);
+ close(OutFd);
+ InFd = -1;
+ OutFd = -1;
+ OutReady = false;
+ InReady = false;
+ OutQueue = string();
+ MessageQueue.erase(MessageQueue.begin(),MessageQueue.end());
+
+ return false;
+}
+ /*}}}*/
+// Worker::Pulse - Called periodically /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+void pkgAcquire::Worker::Pulse()
+{
+ if (CurrentItem == 0)
+ return;
+
+ struct stat Buf;
+ if (stat(CurrentItem->Owner->DestFile.c_str(),&Buf) != 0)
+ return;
+ CurrentSize = Buf.st_size;
+}
+ /*}}}*/
+// Worker::ItemDone - Called when the current item is finished /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+void pkgAcquire::Worker::ItemDone()
+{
+ CurrentItem = 0;
+ CurrentSize = 0;
+ TotalSize = 0;
+ Status = string();
+}
+ /*}}}*/
+void pkgAcquire::Worker::PrepareFiles(char const * const caller, pkgAcquire::Queue::QItem const * const Itm)/*{{{*/
+{
+ if (RealFileExists(Itm->Owner->DestFile))
+ {
+ ChangeOwnerAndPermissionOfFile(caller, Itm->Owner->DestFile.c_str(), "root", ROOT_GROUP, 0644);
+ std::string const filename = Itm->Owner->DestFile;
+ for (pkgAcquire::Queue::QItem::owner_iterator O = Itm->Owners.begin(); O != Itm->Owners.end(); ++O)
+ {
+ pkgAcquire::Item const * const Owner = *O;
+ if (Owner->DestFile == filename || filename == "/dev/null")
+ continue;
+ RemoveFile("PrepareFiles", Owner->DestFile);
+ if (link(filename.c_str(), Owner->DestFile.c_str()) != 0)
+ {
+ // different mounts can't happen for us as we download to lists/ by default,
+ // but if the system is reused by others the locations can potentially be on
+ // different disks, so use symlink as poor-men replacement.
+ // FIXME: Real copying as last fallback, but that is costly, so offload to a method preferable
+ if (symlink(filename.c_str(), Owner->DestFile.c_str()) != 0)
+ _error->Error("Can't create (sym)link of file %s to %s", filename.c_str(), Owner->DestFile.c_str());
+ }
+ }
+ }
+ else
+ {
+ for (pkgAcquire::Queue::QItem::owner_iterator O = Itm->Owners.begin(); O != Itm->Owners.end(); ++O)
+ RemoveFile("PrepareFiles", (*O)->DestFile);
+ }
+}
+ /*}}}*/
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-20 09:25:41 +0000