]> git.saurik.com Git - apt.git/blobdiff - apt-pkg/acquire.cc
some more coverity fixes
[apt.git] / apt-pkg / acquire.cc
index fff1b2b6ad379b28603de987933b4523dc5c3f36..a8a5abd344d3ab720ae0a590f2b6ad5bb5fdc1e2 100644 (file)
    ##################################################################### */
                                                                        /*}}}*/
 // Include Files                                                       /*{{{*/
-#ifdef __GNUG__
-#pragma implementation "apt-pkg/acquire.h"
-#endif       
+#include <config.h>
+
 #include <apt-pkg/acquire.h>
 #include <apt-pkg/acquire-item.h>
 #include <apt-pkg/acquire-worker.h>
 #include <apt-pkg/configuration.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/strutl.h>
-
-#include <apti18n.h>
+#include <apt-pkg/fileutl.h>
 
 #include <iostream>
 #include <sstream>
-    
+#include <stdio.h>
+
 #include <dirent.h>
 #include <sys/time.h>
 #include <errno.h>
-#include <sys/stat.h>
+
+#include <apti18n.h>
                                                                        /*}}}*/
 
 using namespace std;
@@ -39,32 +39,60 @@ using namespace std;
 // Acquire::pkgAcquire - Constructor                                   /*{{{*/
 // ---------------------------------------------------------------------
 /* We grab some runtime state from the configuration space */
-pkgAcquire::pkgAcquire(pkgAcquireStatus *Log) : Log(Log)
+pkgAcquire::pkgAcquire() : LockFD(-1), Queues(0), Workers(0), Configs(0), Log(NULL), ToFetch(0),
+                          Debug(_config->FindB("Debug::pkgAcquire",false)),
+                          Running(false)
 {
-   Queues = 0;
-   Configs = 0;
-   Workers = 0;
-   ToFetch = 0;
-   Running = false;
-   
-   string Mode = _config->Find("Acquire::Queue-Mode","host");
+   string const Mode = _config->Find("Acquire::Queue-Mode","host");
+   if (strcasecmp(Mode.c_str(),"host") == 0)
+      QueueMode = QueueHost;
+   if (strcasecmp(Mode.c_str(),"access") == 0)
+      QueueMode = QueueAccess;
+}
+pkgAcquire::pkgAcquire(pkgAcquireStatus *Progress) :  LockFD(-1), Queues(0), Workers(0),
+                          Configs(0), Log(Progress), ToFetch(0),
+                          Debug(_config->FindB("Debug::pkgAcquire",false)),
+                          Running(false)
+{
+   string const Mode = _config->Find("Acquire::Queue-Mode","host");
    if (strcasecmp(Mode.c_str(),"host") == 0)
       QueueMode = QueueHost;
    if (strcasecmp(Mode.c_str(),"access") == 0)
-      QueueMode = QueueAccess;   
+      QueueMode = QueueAccess;
+   Setup(Progress, "");
+}
+                                                                       /*}}}*/
+// Acquire::Setup - Delayed Constructor                                        /*{{{*/
+// ---------------------------------------------------------------------
+/* Do everything needed to be a complete Acquire object and report the
+   success (or failure) back so the user knows that something is wrong… */
+bool pkgAcquire::Setup(pkgAcquireStatus *Progress, string const &Lock)
+{
+   Log = Progress;
 
-   Debug = _config->FindB("Debug::pkgAcquire",false);
-   
-   // This is really a stupid place for this
-   struct stat St;
-   if (stat((_config->FindDir("Dir::State::lists") + "partial/").c_str(),&St) != 0 ||
-       S_ISDIR(St.st_mode) == 0)
-      _error->Error(_("Lists directory %spartial is missing."),
-                   _config->FindDir("Dir::State::lists").c_str());
-   if (stat((_config->FindDir("Dir::Cache::Archives") + "partial/").c_str(),&St) != 0 ||
-       S_ISDIR(St.st_mode) == 0)
-      _error->Error(_("Archive directory %spartial is missing."),
-                   _config->FindDir("Dir::Cache::Archives").c_str());
+   // check for existence and possibly create auxiliary directories
+   string const listDir = _config->FindDir("Dir::State::lists");
+   string const partialListDir = listDir + "partial/";
+   string const archivesDir = _config->FindDir("Dir::Cache::Archives");
+   string const partialArchivesDir = archivesDir + "partial/";
+
+   if (CreateAPTDirectoryIfNeeded(_config->FindDir("Dir::State"), partialListDir) == false &&
+       CreateAPTDirectoryIfNeeded(listDir, partialListDir) == false)
+      return _error->Errno("Acquire", _("List directory %spartial is missing."), listDir.c_str());
+
+   if (CreateAPTDirectoryIfNeeded(_config->FindDir("Dir::Cache"), partialArchivesDir) == false &&
+       CreateAPTDirectoryIfNeeded(archivesDir, partialArchivesDir) == false)
+      return _error->Errno("Acquire", _("Archives directory %spartial is missing."), archivesDir.c_str());
+
+   if (Lock.empty() == true || _config->FindB("Debug::NoLocking", false) == true)
+      return true;
+
+   // Lock the directory this acquire object will work in
+   LockFD = GetLock(flCombine(Lock, "lock"));
+   if (LockFD == -1)
+      return _error->Error(_("Unable to lock directory %s"), Lock.c_str());
+
+   return true;
 }
                                                                        /*}}}*/
 // Acquire::~pkgAcquire        - Destructor                                    /*{{{*/
@@ -73,7 +101,10 @@ pkgAcquire::pkgAcquire(pkgAcquireStatus *Log) : Log(Log)
 pkgAcquire::~pkgAcquire()
 {
    Shutdown();
-   
+
+   if (LockFD != -1)
+      close(LockFD);
+
    while (Configs != 0)
    {
       MethodConfig *Jnk = Configs;
@@ -87,7 +118,7 @@ pkgAcquire::~pkgAcquire()
 /* */
 void pkgAcquire::Shutdown()
 {
-   while (Items.size() != 0)
+   while (Items.empty() == false)
    {
       if (Items[0]->Status == Item::StatFetching)
          Items[0]->Status = Item::StatError;
@@ -126,7 +157,7 @@ void pkgAcquire::Remove(Item *Itm)
         I = Items.begin();
       }      
       else 
-        I++;
+        ++I;
    }
 }
                                                                        /*}}}*/
@@ -193,9 +224,9 @@ void pkgAcquire::Enqueue(ItemDesc &Item)
    Item.Owner->Status = Item::StatIdle;
    
    // Queue it into the named queue
-   I->Enqueue(Item);
-   ToFetch++;
-         
+   if(I->Enqueue(Item)) 
+      ToFetch++;
+            
    // Some trace stuff
    if (Debug == true)
    {
@@ -213,11 +244,19 @@ void pkgAcquire::Dequeue(Item *Itm)
 {
    Queue *I = Queues;
    bool Res = false;
-   for (; I != 0; I = I->Next)
-      Res |= I->Dequeue(Itm);
-   
    if (Debug == true)
       clog << "Dequeuing " << Itm->DestFile << endl;
+
+   for (; I != 0; I = I->Next)
+   {
+      if (I->Dequeue(Itm))
+      {
+         Res = true;
+        if (Debug == true)
+           clog << "Dequeued from " << I->Name << endl;
+      }
+   }
+
    if (Res == true)
       ToFetch--;
 }
@@ -238,9 +277,30 @@ string pkgAcquire::QueueName(string Uri,MethodConfig const *&Config)
    /* Single-Instance methods get exactly one queue per URI. This is
       also used for the Access queue method  */
    if (Config->SingleInstance == true || QueueMode == QueueAccess)
-       return U.Access;
+      return U.Access;
+
+   string AccessSchema = U.Access + ':',
+       FullQueueName = AccessSchema + U.Host;
+   unsigned int Instances = 0, SchemaLength = AccessSchema.length();
+
+   Queue *I = Queues;
+   for (; I != 0; I = I->Next) {
+      // if the queue already exists, re-use it
+      if (I->Name == FullQueueName)
+        return FullQueueName;
+
+      if (I->Name.compare(0, SchemaLength, AccessSchema) == 0)
+        Instances++;
+   }
+
+   if (Debug) {
+      clog << "Found " << Instances << " instances of " << U.Access << endl;
+   }
 
-   return U.Access + ':' + U.Host;
+   if (Instances >= (unsigned int)_config->FindI("Acquire::QueueHost::Limit",10))
+      return U.Access;
+
+   return FullQueueName;
 }
                                                                        /*}}}*/
 // Acquire::GetConfig - Fetch the configuration information            /*{{{*/
@@ -268,7 +328,7 @@ pkgAcquire::MethodConfig *pkgAcquire::GetConfig(string Access)
       return 0;
 
    /* if a method uses DownloadLimit, we switch to SingleInstance mode */
-   if(_config->FindI("Acquire::"+Access+"::DlLimit",0) > 0)
+   if(_config->FindI("Acquire::"+Access+"::Dl-Limit",0) > 0)
       Conf->SingleInstance = true;
     
    return Conf;
@@ -382,7 +442,7 @@ pkgAcquire::RunResult pkgAcquire::Run(int PulseIntervall)
       I->Shutdown(false);
 
    // Shut down the items
-   for (ItemIterator I = Items.begin(); I != Items.end(); I++)
+   for (ItemIterator I = Items.begin(); I != Items.end(); ++I)
       (*I)->Finished(); 
    
    if (_error->PendingError())
@@ -416,6 +476,10 @@ pkgAcquire::Worker *pkgAcquire::WorkerStep(Worker *I)
    if it is part of the download set. */
 bool pkgAcquire::Clean(string Dir)
 {
+   // non-existing directories are by definition clean…
+   if (DirectoryExists(Dir) == false)
+      return true;
+
    DIR *D = opendir(Dir.c_str());   
    if (D == 0)
       return _error->Errno("opendir",_("Unable to read %s"),Dir.c_str());
@@ -438,7 +502,7 @@ bool pkgAcquire::Clean(string Dir)
       
       // Look in the get list
       ItemCIterator I = Items.begin();
-      for (; I != Items.end(); I++)
+      for (; I != Items.end(); ++I)
         if (flNotDir((*I)->DestFile) == Dir->d_name)
            break;
       
@@ -447,18 +511,19 @@ bool pkgAcquire::Clean(string Dir)
         unlink(Dir->d_name);
    };
    
-   chdir(StartDir.c_str());
    closedir(D);
+   if (chdir(StartDir.c_str()) != 0)
+      return _error->Errno("chdir",_("Unable to change to %s"),StartDir.c_str());
    return true;   
 }
                                                                        /*}}}*/
 // Acquire::TotalNeeded - Number of bytes to fetch                     /*{{{*/
 // ---------------------------------------------------------------------
 /* This is the total number of bytes needed */
-double pkgAcquire::TotalNeeded()
+unsigned long long pkgAcquire::TotalNeeded()
 {
-   double Total = 0;
-   for (ItemCIterator I = ItemsBegin(); I != ItemsEnd(); I++)
+   unsigned long long Total = 0;
+   for (ItemCIterator I = ItemsBegin(); I != ItemsEnd(); ++I)
       Total += (*I)->FileSize;
    return Total;
 }
@@ -466,10 +531,10 @@ double pkgAcquire::TotalNeeded()
 // Acquire::FetchNeeded - Number of bytes needed to get                        /*{{{*/
 // ---------------------------------------------------------------------
 /* This is the number of bytes that is not local */
-double pkgAcquire::FetchNeeded()
+unsigned long long pkgAcquire::FetchNeeded()
 {
-   double Total = 0;
-   for (ItemCIterator I = ItemsBegin(); I != ItemsEnd(); I++)
+   unsigned long long Total = 0;
+   for (ItemCIterator I = ItemsBegin(); I != ItemsEnd(); ++I)
       if ((*I)->Local == false)
         Total += (*I)->FileSize;
    return Total;
@@ -478,15 +543,15 @@ double pkgAcquire::FetchNeeded()
 // Acquire::PartialPresent - Number of partial bytes we already have   /*{{{*/
 // ---------------------------------------------------------------------
 /* This is the number of bytes that is not local */
-double pkgAcquire::PartialPresent()
+unsigned long long pkgAcquire::PartialPresent()
 {
-  double Total = 0;
-   for (ItemCIterator I = ItemsBegin(); I != ItemsEnd(); I++)
+  unsigned long long Total = 0;
+   for (ItemCIterator I = ItemsBegin(); I != ItemsEnd(); ++I)
       if ((*I)->Local == false)
         Total += (*I)->PartialSize;
    return Total;
 }
-
+                                                                       /*}}}*/
 // Acquire::UriBegin - Start iterator for the uri list                 /*{{{*/
 // ---------------------------------------------------------------------
 /* */
@@ -503,7 +568,6 @@ pkgAcquire::UriIterator pkgAcquire::UriEnd()
    return UriIterator(0);
 }
                                                                        /*}}}*/
-
 // Acquire::MethodConfig::MethodConfig - Constructor                   /*{{{*/
 // ---------------------------------------------------------------------
 /* */
@@ -517,7 +581,6 @@ pkgAcquire::MethodConfig::MethodConfig()
    Next = 0;
 }
                                                                        /*}}}*/
-
 // Queue::Queue - Constructor                                          /*{{{*/
 // ---------------------------------------------------------------------
 /* */
@@ -549,11 +612,17 @@ pkgAcquire::Queue::~Queue()
 // Queue::Enqueue - Queue an item to the queue                         /*{{{*/
 // ---------------------------------------------------------------------
 /* */
-void pkgAcquire::Queue::Enqueue(ItemDesc &Item)
+bool pkgAcquire::Queue::Enqueue(ItemDesc &Item)
 {
    QItem **I = &Items;
-   for (; *I != 0; I = &(*I)->Next);
-   
+   // move to the end of the queue and check for duplicates here
+   for (; *I != 0; I = &(*I)->Next)
+      if (Item.URI == (*I)->URI) 
+      {
+        Item.Owner->Status = Item::StatDone;
+        return false;
+      }
+
    // Create a new item
    QItem *Itm = new QItem;
    *Itm = Item;
@@ -563,6 +632,7 @@ void pkgAcquire::Queue::Enqueue(ItemDesc &Item)
    Item.Owner->QueueCounter++;   
    if (Items->Next == 0)
       Cycle();
+   return true;
 }
                                                                        /*}}}*/
 // Queue::Dequeue - Remove an item from the queue                      /*{{{*/
@@ -615,7 +685,7 @@ bool pkgAcquire::Queue::Startup()
          added other source retry to have cycle maintain a pipeline depth
          on its own. */
       if (Cnf->Pipeline == true)
-        MaxPipeDepth = 10;
+        MaxPipeDepth = _config->FindI("Acquire::Max-Pipeline-Depth",10);
       else
         MaxPipeDepth = 1;
    }
@@ -722,11 +792,10 @@ void pkgAcquire::Queue::Bump()
    Cycle();
 }
                                                                        /*}}}*/
-
 // AcquireStatus::pkgAcquireStatus - Constructor                       /*{{{*/
 // ---------------------------------------------------------------------
 /* */
-pkgAcquireStatus::pkgAcquireStatus() : Update(true), MorePulses(false)
+pkgAcquireStatus::pkgAcquireStatus() : d(NULL), Update(true), MorePulses(false)
 {
    Start();
 }
@@ -747,11 +816,11 @@ bool pkgAcquireStatus::Pulse(pkgAcquire *Owner)
    unsigned int Unknown = 0;
    unsigned int Count = 0;
    for (pkgAcquire::ItemCIterator I = Owner->ItemsBegin(); I != Owner->ItemsEnd();
-       I++, Count++)
+       ++I, ++Count)
    {
       TotalItems++;
       if ((*I)->Status == pkgAcquire::Item::StatDone)
-        CurrentItems++;
+        ++CurrentItems;
       
       // Totally ignore local items
       if ((*I)->Local == true)
@@ -761,11 +830,11 @@ bool pkgAcquireStatus::Pulse(pkgAcquire *Owner)
       if ((*I)->Complete == true)
         CurrentBytes += (*I)->FileSize;
       if ((*I)->FileSize == 0 && (*I)->Complete == false)
-        Unknown++;
+        ++Unknown;
    }
    
    // Compute the current completion
-   unsigned long ResumeSize = 0;
+   unsigned long long ResumeSize = 0;
    for (pkgAcquire::Worker *I = Owner->WorkersBegin(); I != 0;
        I = Owner->WorkerStep(I))
       if (I->CurrentItem != 0 && I->CurrentItem->Owner->Complete == false)
@@ -792,7 +861,7 @@ bool pkgAcquireStatus::Pulse(pkgAcquire *Owner)
    // Compute the CPS
    struct timeval NewTime;
    gettimeofday(&NewTime,0);
-   if (NewTime.tv_sec - Time.tv_sec == 6 && NewTime.tv_usec > Time.tv_usec ||
+   if ((NewTime.tv_sec - Time.tv_sec == 6 && NewTime.tv_usec > Time.tv_usec) ||
        NewTime.tv_sec - Time.tv_sec > 6)
    {    
       double Delta = NewTime.tv_sec - Time.tv_sec + 
@@ -804,7 +873,7 @@ bool pkgAcquireStatus::Pulse(pkgAcquire *Owner)
       else
         CurrentCPS = ((CurrentBytes - ResumeSize) - LastBytes)/Delta;
       LastBytes = CurrentBytes - ResumeSize;
-      ElapsedTime = (unsigned long)Delta;
+      ElapsedTime = (unsigned long long)Delta;
       Time = NewTime;
    }
 
@@ -815,8 +884,9 @@ bool pkgAcquireStatus::Pulse(pkgAcquire *Owner)
 
       char msg[200];
       long i = CurrentItems < TotalItems ? CurrentItems + 1 : CurrentItems;
-      unsigned long ETA =
-        (unsigned long)((TotalBytes - CurrentBytes) / CurrentCPS);
+      unsigned long long ETA = 0;
+      if(CurrentCPS > 0)
+         ETA = (TotalBytes - CurrentBytes) / CurrentCPS;
 
       // only show the ETA if it makes sense
       if (ETA > 0 && ETA < 172800 /* two days */ )
@@ -831,7 +901,9 @@ bool pkgAcquireStatus::Pulse(pkgAcquire *Owner)
             << ":"  << (CurrentBytes/float(TotalBytes)*100.0) 
             << ":" << msg 
             << endl;
-      write(fd, status.str().c_str(), status.str().size());
+
+      std::string const dlstatus = status.str();
+      FileFd::Write(fd, dlstatus.c_str(), dlstatus.size());
    }
 
    return true;
@@ -872,13 +944,13 @@ void pkgAcquireStatus::Stop()
    else
       CurrentCPS = FetchedBytes/Delta;
    LastBytes = CurrentBytes;
-   ElapsedTime = (unsigned int)Delta;
+   ElapsedTime = (unsigned long long)Delta;
 }
                                                                        /*}}}*/
 // AcquireStatus::Fetched - Called when a byte set has been fetched    /*{{{*/
 // ---------------------------------------------------------------------
 /* This is used to get accurate final transfer rate reporting. */
-void pkgAcquireStatus::Fetched(unsigned long Size,unsigned long Resume)
+void pkgAcquireStatus::Fetched(unsigned long long Size,unsigned long long Resume)
 {   
    FetchedBytes += Size - Resume;
 }