]> git.saurik.com Git - apt.git/blobdiff - apt-pkg/acquire-worker.cc
abstract the code to iterate over all targets a bit
[apt.git] / apt-pkg / acquire-worker.cc
index 77e2fc3119d5c430effb8940569c6015ac0cb96f..099a1f87d2e277b525b3c80af32cc8271d59f8c7 100644 (file)
 // 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 <string>
+#include <vector>
 #include <iostream>
 #include <sstream>
-#include <fstream>
 
 #include <sys/stat.h>
+#include <stdlib.h>
 #include <unistd.h>
-#include <fcntl.h>
 #include <signal.h>
 #include <stdio.h>
 #include <errno.h>
+#include <sys/types.h>
+#include <pwd.h>
+#include <grp.h>
 
 #include <apti18n.h>
                                                                        /*}}}*/
@@ -49,8 +55,8 @@ pkgAcquire::Worker::Worker(Queue *Q,MethodConfig *Cnf,
    CurrentItem = 0;
    TotalSize = 0;
    CurrentSize = 0;
-   
-   Construct();   
+
+   Construct();
 }
                                                                        /*}}}*/
 // Worker::Worker - Constructor for method config startup              /*{{{*/
@@ -64,8 +70,8 @@ pkgAcquire::Worker::Worker(MethodConfig *Cnf)
    CurrentItem = 0;
    TotalSize = 0;
    CurrentSize = 0;
-   
-   Construct();   
+
+   Construct();
 }
                                                                        /*}}}*/
 // Worker::Construct - Constructor helper                              /*{{{*/
@@ -109,7 +115,12 @@ bool pkgAcquire::Worker::Start()
    // Get the method path
    string Method = _config->FindDir("Dir::Bin::Methods") + Access;
    if (FileExists(Method) == false)
-      return _error->Error(_("The method driver %s could not be found."),Method.c_str());
+   {
+      _error->Error(_("The method driver %s could not be found."),Method.c_str());
+      if (Access == "https")
+        _error->Notice(_("Is the package %s installed?"), "apt-transport-https");
+      return false;
+   }
 
    if (Debug == true)
       clog << "Starting method '" << Method << '\'' << endl;
@@ -125,7 +136,7 @@ bool pkgAcquire::Worker::Start()
    }
    for (int I = 0; I != 4; I++)
       SetCloseExec(Pipes[I],true);
-   
+
    // Fork off the process
    Process = ExecFork();
    if (Process == 0)
@@ -134,9 +145,9 @@ bool pkgAcquire::Worker::Start()
       dup2(Pipes[1],STDOUT_FILENO);
       dup2(Pipes[2],STDIN_FILENO);
       SetCloseExec(STDOUT_FILENO,false);
-      SetCloseExec(STDIN_FILENO,false);      
+      SetCloseExec(STDIN_FILENO,false);
       SetCloseExec(STDERR_FILENO,false);
-      
+
       const char *Args[2];
       Args[0] = Method.c_str();
       Args[1] = 0;
@@ -154,7 +165,7 @@ bool pkgAcquire::Worker::Start()
    close(Pipes[2]);
    OutReady = false;
    InReady = true;
-   
+
    // Read the configuration data
    if (WaitFd(InFd) == false ||
        ReadMessages() == false)
@@ -163,7 +174,7 @@ bool pkgAcquire::Worker::Start()
    RunMessages();
    if (OwnerQ != 0)
       SendConfiguration();
-   
+
    return true;
 }
                                                                        /*}}}*/
@@ -190,7 +201,7 @@ bool pkgAcquire::Worker::RunMessages()
 
       if (Debug == true)
         clog << " <- " << Access << ':' << QuoteString(Message,"\n") << endl;
-      
+
       // Fetch the message number
       char *End;
       int Number = strtol(Message.c_str(),&End,10);
@@ -204,15 +215,15 @@ bool pkgAcquire::Worker::RunMessages()
 
       // update used mirror
       string UsedMirror = LookupTag(Message,"UsedMirror", "");
-      if (!UsedMirror.empty() && 
+      if (!UsedMirror.empty() &&
           Itm && 
-          Itm->Description.find(" ") != string::npos) 
+          Itm->Description.find(" ") != string::npos)
       {
          Itm->Description.replace(0, Itm->Description.find(" "), UsedMirror);
          // FIXME: will we need this as well?
          //Itm->ShortDesc = UsedMirror;
       }
-      
+
       // Determine the message number and dispatch
       switch (Number)
       {
@@ -221,18 +232,18 @@ bool pkgAcquire::Worker::RunMessages()
         if (Capabilities(Message) == false)
            return _error->Error("Unable to process Capabilities message from %s",Access.c_str());
         break;
-        
+
         // 101 Log
         case 101:
         if (Debug == true)
            clog << " <- (log) " << LookupTag(Message,"Message") << endl;
         break;
-        
+
         // 102 Status
         case 102:
         Status = LookupTag(Message,"Message");
         break;
-           
+
          // 103 Redirect
          case 103:
          {
@@ -241,12 +252,27 @@ bool pkgAcquire::Worker::RunMessages()
                _error->Error("Method gave invalid 103 Redirect message");
                break;
             }
+
             string NewURI = LookupTag(Message,"New-URI",URI.c_str());
             Itm->URI = NewURI;
+
+           ItemDone();
+
+           pkgAcquire::Item *Owner = Itm->Owner;
+           pkgAcquire::ItemDesc Desc = *Itm;
+
+           // Change the status so that it can be dequeued
+           Owner->Status = pkgAcquire::Item::StatIdle;
+           // Mark the item as done (taking care of all queues)
+           // and then put it in the main queue again
+           OwnerQ->ItemDone(Itm);
+           OwnerQ->Owner->Enqueue(Desc);
+
+           if (Log != 0)
+              Log->Done(Desc);
             break;
          }
-   
+
         // 200 URI Start
         case 200:
         {
@@ -255,23 +281,23 @@ bool pkgAcquire::Worker::RunMessages()
               _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);
-           Itm->Owner->Start(Message,strtoull(LookupTag(Message,"Size","0").c_str(), NULL, 10));
+           Itm->Owner->Start(Message, TotalSize);
 
            // Display update before completion
            if (Log != 0 && Log->MorePulses == true)
               Log->Pulse(Itm->Owner->GetOwner());
-           
+
            if (Log != 0)
               Log->Fetch(*Itm);
 
            break;
         }
-        
+
         // 201 URI Done
         case 201:
         {
@@ -280,72 +306,129 @@ bool pkgAcquire::Worker::RunMessages()
               _error->Error("Method gave invalid 201 URI Done message");
               break;
            }
-           
+
            pkgAcquire::Item *Owner = Itm->Owner;
            pkgAcquire::ItemDesc Desc = *Itm;
-           
+
+           if (RealFileExists(Owner->DestFile))
+              ChangeOwnerAndPermissionOfFile("201::URIDone", Owner->DestFile.c_str(), "root", "root", 0644);
+
            // Display update before completion
            if (Log != 0 && Log->MorePulses == true)
               Log->Pulse(Owner->GetOwner());
-           
+
            OwnerQ->ItemDone(Itm);
-           unsigned long long const ServerSize = strtoull(LookupTag(Message,"Size","0").c_str(), NULL, 10);
-           if (TotalSize != 0 && ServerSize != TotalSize)
-              _error->Warning("Size of file %s is not what the server reported %s %llu",
-                              Owner->DestFile.c_str(), LookupTag(Message,"Size","0").c_str(),TotalSize);
-
-           // see if there is a hash to verify
-           string RecivedHash;
-           HashString expectedHash(Owner->HashSum());
-           if(!expectedHash.empty()) 
+
+           HashStringList const ExpectedHashes = Owner->GetExpectedHashes();
+           // see if we got hashes to verify
+           HashStringList ReceivedHashes;
+           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 (ExpectedHashes.usable() == true && ReceivedHashes.usable() == false)
            {
-              string hashTag = expectedHash.HashType()+"-Hash";
-              string hashSum = LookupTag(Message, hashTag.c_str());
-              if(!hashSum.empty())
-                 RecivedHash = expectedHash.HashType() + ":" + hashSum;
-              if(_config->FindB("Debug::pkgAcquire::Auth", false) == true)
+              std::string const filename = LookupTag(Message, "Filename", Owner->DestFile.c_str());
+              if (filename.empty() == false && RealFileExists(filename))
               {
-                 clog << "201 URI Done: " << Owner->DescURI() << endl
-                      << "RecivedHash: " << RecivedHash << endl
-                      << "ExpectedHash: " << expectedHash.toStr() 
-                      << endl << endl;
+                 Hashes calc(ExpectedHashes);
+                 FileFd file(filename, FileFd::ReadOnly, FileFd::None);
+                 calc.AddFD(file);
+                 ReceivedHashes = calc.GetHashStringList();
               }
            }
-           Owner->Done(Message, ServerSize, RecivedHash.c_str(), Config);
-           ItemDone();
-           
-           // Log that we are done
-           if (Log != 0)
+
+           if(_config->FindB("Debug::pkgAcquire::Auth", false) == true)
            {
-              if (StringToBool(LookupTag(Message,"IMS-Hit"),false) == true ||
-                  StringToBool(LookupTag(Message,"Alt-IMS-Hit"),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;
+           bool const isIMSHit = StringToBool(LookupTag(Message,"IMS-Hit"),false) ||
+              StringToBool(LookupTag(Message,"Alt-IMS-Hit"),false);
+           if (ExpectedHashes.usable())
+           {
+              if (ReceivedHashes.usable() == false)
               {
-                 /* Hide 'hits' for local only sources - we also manage to
-                    hide gets */
-                 if (Config->LocalOnly == false)
-                    Log->IMSHit(Desc);
-              }               
+                 /* 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
-                 Log->Done(Desc);
+                 consideredOkay = false;
+
+           }
+           else if (Owner->HashesRequired() == true)
+              consideredOkay = false;
+           else
+              consideredOkay = true;
+
+           if (consideredOkay == true)
+           {
+              Owner->Done(Message, ReceivedHashes, Config);
+              ItemDone();
+
+              // Log that we are done
+              if (Log != 0)
+              {
+                 if (isIMSHit)
+                 {
+                    /* Hide 'hits' for local only sources - we also manage to
+                       hide gets */
+                    if (Config->LocalOnly == false)
+                       Log->IMSHit(Desc);
+                 }
+                 else
+                    Log->Done(Desc);
+              }
+           }
+           else
+           {
+              Owner->Status = pkgAcquire::Item::StatAuthError;
+              Owner->Failed(Message,Config);
+              ItemDone();
+
+              if (Log != 0)
+                 Log->Fail(Desc);
            }
            break;
-        }       
-        
+        }
+
         // 400 URI Failure
         case 400:
         {
            if (Itm == 0)
            {
-              _error->Error("Method gave invalid 400 URI Failure message");
+              std::string const msg = LookupTag(Message,"Message");
+              _error->Error("Method gave invalid 400 URI Failure message: %s", msg.c_str());
               break;
            }
 
            // Display update before completion
            if (Log != 0 && Log->MorePulses == true)
               Log->Pulse(Itm->Owner->GetOwner());
-           
+
            pkgAcquire::Item *Owner = Itm->Owner;
            pkgAcquire::ItemDesc Desc = *Itm;
+
+           if (RealFileExists(Owner->DestFile))
+              ChangeOwnerAndPermissionOfFile("400::URIFailure", Owner->DestFile.c_str(), "root", "root", 0644);
+
            OwnerQ->ItemDone(Itm);
 
            // set some status
@@ -362,18 +445,18 @@ bool pkgAcquire::Worker::RunMessages()
               Log->Fail(Desc);
 
            break;
-        }       
-        
+        }
+
         // 401 General Failure
         case 401:
         _error->Error("Method %s General failure: %s",Access.c_str(),LookupTag(Message,"Message").c_str());
         break;
-        
+
         // 403 Media Change
         case 403:
-        MediaChange(Message); 
+        MediaChange(Message);
         break;
-      }      
+      }
    }
    return true;
 }
@@ -386,7 +469,7 @@ 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);
@@ -401,13 +484,13 @@ bool pkgAcquire::Worker::Capabilities(string Message)
       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 << 
+             " Pipeline:" << Config->Pipeline <<
+             " SendConfig:" << Config->SendConfig <<
+             " LocalOnly: " << Config->LocalOnly <<
+             " NeedsCleanup: " << Config->NeedsCleanup <<
              " Removable: " << Config->Removable << endl;
    }
-   
+
    return true;
 }
                                                                        /*}}}*/
@@ -417,10 +500,10 @@ bool pkgAcquire::Worker::Capabilities(string Message)
 bool pkgAcquire::Worker::MediaChange(string Message)
 {
    int status_fd = _config->FindI("APT::Status-Fd",-1);
-   if(status_fd > 0) 
+   if(status_fd > 0)
    {
       string Media = LookupTag(Message,"Media");
-      string Drive = LookupTag(Message,"Drive"); 
+      string Drive = LookupTag(Message,"Drive");
       ostringstream msg,status;
       ioprintf(msg,_("Please insert the disc labeled: "
                     "'%s' "
@@ -467,40 +550,19 @@ bool pkgAcquire::Worker::SendConfiguration()
 
    if (OutFd == -1)
       return false;
-   
-   string Message = "601 Configuration\n";
-   Message.reserve(2000);
 
-   /* Write out all of the configuration directives by walking the 
+   /* Write out all of the configuration directives by walking the
       configuration tree */
-   const Configuration::Item *Top = _config->Tree(0);
-   for (; Top != 0;)
-   {
-      if (Top->Value.empty() == false)
-      {
-        string Line = "Config-Item: " + QuoteString(Top->FullTag(),"=\"\n") + "=";
-        Line += QuoteString(Top->Value,"\n") + '\n';
-        Message += Line;
-      }
-      
-      if (Top->Child != 0)
-      {
-        Top = Top->Child;
-        continue;
-      }
-      
-      while (Top != 0 && Top->Next == 0)
-        Top = Top->Parent;
-      if (Top != 0)
-        Top = Top->Next;
-   }   
-   Message += '\n';
+   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,"\n") << endl;
-   OutQueue += Message;
-   OutReady = true; 
-   
+      clog << " -> " << Access << ':' << QuoteString(Message.str(),"\n") << endl;
+   OutQueue += Message.str();
+   OutReady = true;
+
    return true;
 }
                                                                        /*}}}*/
@@ -511,19 +573,35 @@ bool pkgAcquire::Worker::QueueItem(pkgAcquire::Queue::QItem *Item)
 {
    if (OutFd == -1)
       return false;
-   
+
    string Message = "600 URI Acquire\n";
    Message.reserve(300);
    Message += "URI: " + Item->URI;
    Message += "\nFilename: " + Item->Owner->DestFile;
+   HashStringList const hsl = Item->Owner->GetExpectedHashes();
+   for (HashStringList::const_iterator hs = hsl.begin(); hs != hsl.end(); ++hs)
+      Message += "\nExpected-" + hs->HashType() + ": " + hs->HashValue();
+   if(Item->Owner->FileSize > 0)
+   {
+      string MaximumSize;
+      strprintf(MaximumSize, "%llu", Item->Owner->FileSize);
+      Message += "\nMaximum-Size: " + MaximumSize;
+   }
    Message += Item->Owner->Custom600Headers();
    Message += "\n\n";
-   
+
+   if (RealFileExists(Item->Owner->DestFile))
+   {
+      std::string SandboxUser = _config->Find("APT::Sandbox::User");
+      ChangeOwnerAndPermissionOfFile("Item::QueueURI", Item->Owner->DestFile.c_str(),
+                                     SandboxUser.c_str(), "root", 0600);
+   }
+
    if (Debug == true)
       clog << " -> " << Access << ':' << QuoteString(Message,"\n") << endl;
    OutQueue += Message;
    OutReady = true;
-   
+
    return true;
 }
                                                                        /*}}}*/
@@ -532,13 +610,20 @@ bool pkgAcquire::Worker::QueueItem(pkgAcquire::Queue::QItem *Item)
 /* */
 bool pkgAcquire::Worker::OutFdReady()
 {
-   if (FileFd::Write(OutFd,OutQueue.c_str(),OutQueue.length()) == false)
+   int Res;
+   do
+   {
+      Res = write(OutFd,OutQueue.c_str(),OutQueue.length());
+   }
+   while (Res < 0 && errno == EINTR);
+
+   if (Res <= 0)
       return MethodFailure();
-   
-   OutQueue.clear();
+
+   OutQueue.erase(0,Res);
    if (OutQueue.empty() == true)
       OutReady = false;
-   
+
    return true;
 }
                                                                        /*}}}*/
@@ -555,12 +640,12 @@ bool pkgAcquire::Worker::InFdReady()
                                                                        /*}}}*/
 // Worker::MethodFailure - Called when the method fails                        /*{{{*/
 // ---------------------------------------------------------------------
-/* This is called when the method is belived to have failed, probably because
+/* 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;
@@ -572,26 +657,22 @@ bool pkgAcquire::Worker::MethodFailure()
    InReady = false;
    OutQueue = string();
    MessageQueue.erase(MessageQueue.begin(),MessageQueue.end());
-   
+
    return false;
 }
                                                                        /*}}}*/
-// Worker::Pulse - Called periodically                                         /*{{{*/
+// 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;
-   
-   // Hmm? Should not happen...
-   if (CurrentSize > TotalSize && TotalSize != 0)
-      TotalSize = CurrentSize;
 }
                                                                        /*}}}*/
 // Worker::ItemDone - Called when the current item is finished         /*{{{*/