]> git.saurik.com Git - apt.git/blobdiff - methods/server.cc
Revert "Handle ERRSIG in the gpgv method like BADSIG"
[apt.git] / methods / server.cc
index 6c05700a57ecc20ccc9840b541c778c5cb8732bd..322b8d94ca1dfcdd98f20ff20715aa1659437a97 100644 (file)
@@ -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;
@@ -240,15 +246,16 @@ 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();
 }
                                                                        /*}}}*/
-
-bool ServerMethod::Configuration(string Message)                       /*{{{*/
+bool ServerState::AddPartialFileToHashes(FileFd &File)                 /*{{{*/
 {
-   return pkgAcqMethod::Configuration(Message);
+   File.Truncate(StartPos);
+   return GetHashes()->AddFD(File, StartPos);
 }
                                                                        /*}}}*/
 
@@ -263,12 +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
@@ -313,7 +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->TotalFileSize)
+        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)
@@ -326,7 +346,7 @@ ServerMethod::DealWithHeaders(FetchResult &Res)
            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;
@@ -334,14 +354,14 @@ 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)
    {
-      char err[255];
-      snprintf(err,sizeof(err)-1,"HttpError%i",Server->Result);
+      std::string err;
+      strprintf(err, "HttpError%u", Server->Result);
       SetFailReason(err);
-      _error->Error("%u %s",Server->Result,Server->Code);
+      _error->Error("%u %s", Server->Result, Server->Code);
       if (Server->HaveContent == true)
         return ERROR_WITH_CONTENT_PAGE;
       return ERROR_UNRECOVERABLE;
@@ -358,11 +378,11 @@ 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;
 
-   if (Server->InitHashes(*File) == false)
+   if (Server->InitHashes(Queue->ExpectedHashes) == false || Server->AddPartialFileToHashes(*File) == false)
    {
       _error->Errno("read",_("Problem hashing file"));
       return ERROR_NOT_FROM_SERVER;
@@ -407,9 +427,16 @@ bool ServerMethod::Fetch(FetchItem *)
    for (FetchItem *I = Queue; I != 0 && Depth < (signed)PipelineDepth; 
        I = I->Next, Depth++)
    {
-      // If pipelining is disabled, we only queue 1 request
-      if (Server->Pipeline == false && Depth >= 0)
-        break;
+      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;
+      }
       
       // Make sure we stick with the same server
       if (Server->Comp(I->Uri) == false)
@@ -464,10 +491,8 @@ 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
@@ -484,8 +509,7 @@ int ServerMethod::Loop()
       if (Server->Open() == false)
       {
         Fail(true);
-        delete Server;
-        Server = 0;
+        Server = nullptr;
         continue;
       }
 
@@ -515,6 +539,7 @@ int ServerMethod::Loop()
            _error->Discard();
            Server->Close();
            Server->Pipeline = false;
+           Server->PipelineAllowed = false;
            
            if (FailCounter >= 2)
            {
@@ -539,6 +564,13 @@ int ServerMethod::Loop()
 
            // Run the data
            bool Result = true;
+
+            // ensure we don't fetch too much
+            // we could do "Server->MaximumSize = Queue->MaximumSize" here
+            // but that would break the clever pipeline messup detection
+            // so instead we use the size of the biggest item in the queue
+            Server->MaximumSize = FindMaximumObjectSizeInQueue();
+
             if (Server->HaveContent)
               Result = Server->RunData(File);
 
@@ -561,7 +593,39 @@ int ServerMethod::Loop()
            // Send status to APT
            if (Result == true)
            {
-              Res.TakeHashes(*Server->GetHashes());
+              Hashes * const resultHashes = Server->GetHashes();
+              HashStringList const hashList = resultHashes->GetHashStringList();
+              if (PipelineDepth != 0 && Queue->ExpectedHashes.usable() == true && Queue->ExpectedHashes != hashList)
+              {
+                 // we did not get the expected hash… mhhh:
+                 // could it be that server/proxy messed up pipelining?
+                 FetchItem * BeforeI = Queue;
+                 for (FetchItem *I = Queue->Next; I != 0 && I != QueueBack; I = I->Next)
+                 {
+                    if (I->ExpectedHashes.usable() == true && I->ExpectedHashes == hashList)
+                    {
+                       // yes, he did! Disable pipelining and rewrite queue
+                       if (Server->Pipeline == true)
+                       {
+                          // FIXME: fake a warning message as we have no proper way of communicating here
+                          std::string out;
+                          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);
+                       Res.Filename = I->DestFile;
+                       BeforeI->Next = I->Next;
+                       I->Next = Queue;
+                       Queue = I;
+                       break;
+                    }
+                    BeforeI = I;
+                 }
+              }
+              Res.TakeHashes(*resultHashes);
               URIDone(Res);
            }
            else
@@ -581,7 +645,10 @@ int ServerMethod::Loop()
                  QueueBack = Queue;
               }
               else
+               {
+                  Server->Close();
                  Fail(true);
+               }
            }
            break;
         }
@@ -676,3 +743,17 @@ int ServerMethod::Loop()
    return 0;
 }
                                                                        /*}}}*/
+unsigned long long ServerMethod::FindMaximumObjectSizeInQueue() const  /*{{{*/
+{
+   unsigned long long MaxSizeInQueue = 0;
+   for (FetchItem *I = Queue; I != 0 && I != QueueBack; I = I->Next)
+      MaxSizeInQueue = std::max(MaxSizeInQueue, I->MaximumSize);
+   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)
+{
+}
+                                                                       /*}}}*/