wrap every unlink call to check for != /dev/null

[apt.git] / methods / ftp.cc

diff --git a/methods/ftp.cc b/methods/ftp.cc
index 70bf4f6079b2a42b4f56d336611953c8c1fe3f2c..360333107bdeac352181dc241ce53169baef17fc 100644 (file)
--- a/methods/ftp.cc
+++ b/methods/ftp.cc
@@ -3,7 +3,7 @@
 // $Id: ftp.cc,v 1.31.2.1 2004/01/16 18:58:50 mdz Exp $
 /* ######################################################################
 
-   FTP Aquire Method - This is the FTP aquire method for APT.
+   FTP Acquire Method - This is the FTP acquire method for APT.
 
    This is a very simple implementation that does not try to optimize
    at all. Commands are sent syncronously with the FTP server (as the
@@ -23,7 +23,11 @@
 #include <apt-pkg/hashes.h>
 #include <apt-pkg/netrc.h>
 #include <apt-pkg/configuration.h>
+#include <apt-pkg/strutl.h>
 
+#include <ctype.h>
+#include <stdlib.h>
+#include <string.h>
 #include <sys/stat.h>
 #include <sys/time.h>
 #include <unistd.h>
@@ -35,13 +39,13 @@
 
 // Internet stuff
 #include <netinet/in.h>
-#include <sys/socket.h>
 #include <arpa/inet.h>
 #include <netdb.h>
 
 #include "rfc2553emu.h"
 #include "connect.h"
 #include "ftp.h"
+
 #include <apti18n.h>
                                                                        /*}}}*/
 
@@ -56,9 +60,9 @@ struct AFMap
 };
 
 #ifndef AF_INET6
-struct AFMap AFMap[] = {{AF_INET,1},{}};
+struct AFMap AFMap[] = {{AF_INET,1},{0, 0}};
 #else
-struct AFMap AFMap[] = {{AF_INET,1},{AF_INET6,2},{}};
+struct AFMap AFMap[] = {{AF_INET,1},{AF_INET6,2},{0, 0}};
 #endif
 
 unsigned long TimeOut = 120;
@@ -70,9 +74,10 @@ time_t FtpMethod::FailTime = 0;
 // FTPConn::FTPConn - Constructor                                      /*{{{*/
 // ---------------------------------------------------------------------
 /* */
-FTPConn::FTPConn(URI Srv) : Len(0), ServerFd(-1), DataFd(-1), 
+FTPConn::FTPConn(URI Srv) : Len(0), ServerFd(-1), DataFd(-1),
                             DataListenFd(-1), ServerName(Srv),
-                           ForceExtended(false), TryPassive(true)
+                           ForceExtended(false), TryPassive(true),
+                           PeerAddrLen(0), ServerAddrLen(0)
 {
    Debug = _config->FindB("Debug::Acquire::Ftp",false);
    PasvAddr = 0;
@@ -253,19 +258,21 @@ bool FTPConn::Login()
       {
         if (Opts->Value.empty() == true)
            continue;
-        
+
         // Substitute the variables into the command
-        char SitePort[20];
-        if (ServerName.Port != 0)
-           sprintf(SitePort,"%u",ServerName.Port);
-        else
-           strcpy(SitePort,"21");
         string Tmp = Opts->Value;
         Tmp = SubstVar(Tmp,"$(PROXY_USER)",Proxy.User);
         Tmp = SubstVar(Tmp,"$(PROXY_PASS)",Proxy.Password);
         Tmp = SubstVar(Tmp,"$(SITE_USER)",User);
         Tmp = SubstVar(Tmp,"$(SITE_PASS)",Pass);
-        Tmp = SubstVar(Tmp,"$(SITE_PORT)",SitePort);
+        if (ServerName.Port != 0)
+        {
+           std::string SitePort;
+           strprintf(SitePort, "%u", ServerName.Port);
+           Tmp = SubstVar(Tmp,"$(SITE_PORT)", SitePort);
+        }
+        else
+           Tmp = SubstVar(Tmp,"$(SITE_PORT)", "21");
         Tmp = SubstVar(Tmp,"$(SITE)",ServerName.Host);
 
         // Send the command
@@ -738,7 +745,7 @@ bool FTPConn::CreateDataFd()
    }
    
    // Bind and listen
-   if (bind(DataListenFd,BindAddr->ai_addr,BindAddr->ai_addrlen) < 0)
+   if (::bind(DataListenFd,BindAddr->ai_addr,BindAddr->ai_addrlen) < 0)
    {
       freeaddrinfo(BindAddr);
       return _error->Errno("bind",_("Could not bind a socket"));
@@ -843,7 +850,8 @@ bool FTPConn::Finalize()
 /* This opens a data connection, sends REST and RETR and then
    transfers the file over. */
 bool FTPConn::Get(const char *Path,FileFd &To,unsigned long long Resume,
-                 Hashes &Hash,bool &Missing)
+                 Hashes &Hash,bool &Missing, unsigned long long MaximumSize,
+                  pkgAcqMethod *Owner)
 {
    Missing = false;
    if (CreateDataFd() == false)
@@ -916,7 +924,14 @@ bool FTPConn::Get(const char *Path,FileFd &To,unsigned long long Resume,
       {
         Close();
         return false;
-      }      
+      }
+
+      if (MaximumSize > 0 && To.Tell() > MaximumSize)
+      {
+         Owner->SetFailReason("MaximumSizeExceeded");
+         return _error->Error("Writing more data than expected (%llu > %llu)",
+                              To.Tell(), MaximumSize);
+      }
    }
 
    // All done
@@ -946,7 +961,7 @@ FtpMethod::FtpMethod() : pkgAcqMethod("1.0",SendConfig)
                                                                        /*}}}*/
 // FtpMethod::SigTerm - Handle a fatal signal                          /*{{{*/
 // ---------------------------------------------------------------------
-/* This closes and timestamps the open file. This is neccessary to get 
+/* This closes and timestamps the open file. This is necessary to get
    resume behavoir on user abort */
 void FtpMethod::SigTerm(int)
 {
@@ -974,6 +989,10 @@ bool FtpMethod::Configuration(string Message)
       return false;
    
    TimeOut = _config->FindI("Acquire::Ftp::Timeout",TimeOut);
+
+   // no more active ftp, sorry
+   DropPrivsOrDie();
+
    return true;
 }
                                                                        /*}}}*/
@@ -1044,7 +1063,7 @@ bool FtpMethod::Fetch(FetchItem *Itm)
    }
    
    // Open the file
-   Hashes Hash;
+   Hashes Hash(Itm->ExpectedHashes);
    {
       FileFd Fd(Itm->DestFile,FileFd::WriteAny);
       if (_error->PendingError() == true)
@@ -1053,11 +1072,11 @@ bool FtpMethod::Fetch(FetchItem *Itm)
       URIStart(Res);
       
       FailFile = Itm->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 = Fd.Fd();
       
       bool Missing;
-      if (Server->Get(File,Fd,Res.ResumePoint,Hash,Missing) == false)
+      if (Server->Get(File,Fd,Res.ResumePoint,Hash,Missing,Itm->MaximumSize,this) == false)
       {
         Fd.Close();
 
@@ -1071,7 +1090,7 @@ bool FtpMethod::Fetch(FetchItem *Itm)
         // If the file is missing we hard fail and delete the destfile
         // otherwise transient fail
         if (Missing == true) {
-           unlink(FailFile.c_str());
+           RemoveFile("ftp", FailFile);
            return false;
         }
         Fail(true);
@@ -1098,7 +1117,7 @@ bool FtpMethod::Fetch(FetchItem *Itm)
 }
                                                                        /*}}}*/
 
-int main(int argc,const char *argv[])
+int main(int, const char *argv[])
 { 
    setlocale(LC_ALL, "");
 
@@ -1126,6 +1145,6 @@ int main(int argc,const char *argv[])
    }
    
    FtpMethod Mth;
-   
+
    return Mth.Run();
 }