Add a more or less useful README file for everything related to MultiArch

[apt.git] / methods / ftp.cc

diff --git a/methods/ftp.cc b/methods/ftp.cc
index b14e7dc4620e52e5175600a14210b33940a24239..c91600ad5388f7cc675922ce731e37ad43faf59e 100644 (file)
--- a/methods/ftp.cc
+++ b/methods/ftp.cc
@@ -1,22 +1,24 @@
 // -*- mode: cpp; mode: fold -*-
 // Description                                                         /*{{{*/
 // -*- mode: cpp; mode: fold -*-
 // Description                                                         /*{{{*/

-// $Id: ftp.cc,v 1.2 1999/03/15 07:20:41 jgg Exp $
+// $Id: ftp.cc,v 1.31.2.1 2004/01/16 18:58:50 mdz Exp $

 /* ######################################################################
 
 /* ######################################################################
 

-   HTTP Aquire Method - This is the FTP aquire method for APT.
+   FTP Aquire Method - This is the FTP aquire 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
    rfc recommends, but it is not really necessary..) and no tricks are
    done to speed things along.
 
    This is a very simple implementation that does not try to optimize
    at all. Commands are sent syncronously with the FTP server (as the
    rfc recommends, but it is not really necessary..) and no tricks are
    done to speed things along.

-                                                              
+                       
+   RFC 2428 describes the IPv6 FTP behavior
+   

    ##################################################################### */
                                                                        /*}}}*/
 // Include Files                                                       /*{{{*/
 #include <apt-pkg/fileutl.h>
 #include <apt-pkg/acquire-method.h>
 #include <apt-pkg/error.h>
    ##################################################################### */
                                                                        /*}}}*/
 // Include Files                                                       /*{{{*/
 #include <apt-pkg/fileutl.h>
 #include <apt-pkg/acquire-method.h>
 #include <apt-pkg/error.h>

-#include <apt-pkg/md5.h>
+#include <apt-pkg/hashes.h>

 
 #include <sys/stat.h>
 #include <sys/time.h>
 
 #include <sys/stat.h>
 #include <sys/time.h>


@@ -26,6 +28,8 @@
 #include <stdio.h>
 #include <errno.h>
 #include <stdarg.h>
 #include <stdio.h>
 #include <errno.h>
 #include <stdarg.h>

+#include <iostream>
+#include <apti18n.h>

 
 // Internet stuff
 #include <netinet/in.h>
 
 // Internet stuff
 #include <netinet/in.h>


@@ -33,10 +37,26 @@
 #include <arpa/inet.h>
 #include <netdb.h>
 
 #include <arpa/inet.h>
 #include <netdb.h>
 

+#include "rfc2553emu.h"
+#include "connect.h"

 #include "ftp.h"
 #include "ftp.h"

+                                                                       /*}}}*/

 
 

+using namespace std;

 
 

-                                                                       /*}}}*/
+/* This table is for the EPRT and EPSV commands, it maps the OS address
+   family to the IETF address families */
+struct AFMap
+{
+   unsigned long Family;
+   unsigned long IETFFamily;
+};
+
+#ifndef AF_INET6
+struct AFMap AFMap[] = {{AF_INET,1},{}};
+#else
+struct AFMap AFMap[] = {{AF_INET,1},{AF_INET6,2},{}};
+#endif

 
 unsigned long TimeOut = 120;
 URI Proxy;
 
 unsigned long TimeOut = 120;
 URI Proxy;


@@ -51,7 +71,7 @@ FTPConn::FTPConn(URI Srv) : Len(0), ServerFd(-1), DataFd(-1),
                             DataListenFd(-1), ServerName(Srv)
 {
    Debug = _config->FindB("Debug::Acquire::Ftp",false);
                             DataListenFd(-1), ServerName(Srv)
 {
    Debug = _config->FindB("Debug::Acquire::Ftp",false);

-   memset(&PasvAddr,0,sizeof(PasvAddr));
+   PasvAddr = 0;

 }
                                                                        /*}}}*/
 // FTPConn::~FTPConn - Destructor                                      /*{{{*/
 }
                                                                        /*}}}*/
 // FTPConn::~FTPConn - Destructor                                      /*{{{*/


@@ -73,15 +93,16 @@ void FTPConn::Close()
    DataFd = -1;
    close(DataListenFd);
    DataListenFd = -1;
    DataFd = -1;
    close(DataListenFd);
    DataListenFd = -1;

-   memset(&PasvAddr,0,sizeof(PasvAddr));
+   
+   if (PasvAddr != 0)
+      freeaddrinfo(PasvAddr);
+   PasvAddr = 0;

 }
                                                                        /*}}}*/
 // FTPConn::Open - Open a new connection                               /*{{{*/
 // ---------------------------------------------------------------------
 /* Connect to the server using a non-blocking connection and perform a 
    login. */
 }
                                                                        /*}}}*/
 // FTPConn::Open - Open a new connection                               /*{{{*/
 // ---------------------------------------------------------------------
 /* Connect to the server using a non-blocking connection and perform a 
    login. */

-string LastHost;
-in_addr LastHostA;

 bool FTPConn::Open(pkgAcqMethod *Owner)
 {
    // Use the already open connection if possible.
 bool FTPConn::Open(pkgAcqMethod *Owner)
 {
    // Use the already open connection if possible.


@@ -89,27 +110,39 @@ bool FTPConn::Open(pkgAcqMethod *Owner)
       return true;
    
    Close();
       return true;
    
    Close();

-
+   

    // Determine the proxy setting
    // Determine the proxy setting

-   if (getenv("ftp_proxy") == 0)
+   string SpecificProxy = _config->Find("Acquire::ftp::Proxy::" + ServerName.Host);
+   if (!SpecificProxy.empty())

    {
    {

-      string DefProxy = _config->Find("Acquire::ftp::Proxy");
-      string SpecificProxy = _config->Find("Acquire::ftp::Proxy::" + ServerName.Host);
-      if (SpecificProxy.empty() == false)
-      {
-        if (SpecificProxy == "DIRECT")
-           Proxy = "";
-        else
-           Proxy = SpecificProxy;
-      }   
-      else
-        Proxy = DefProxy;
+          if (SpecificProxy == "DIRECT")
+                  Proxy = "";
+          else
+                  Proxy = SpecificProxy;

    }
    else
    }
    else

-      Proxy = getenv("ftp_proxy");
+   {
+          string DefProxy = _config->Find("Acquire::ftp::Proxy");
+          if (!DefProxy.empty())
+          {
+                  Proxy = DefProxy;
+          }
+          else
+          {
+                  char* result = getenv("ftp_proxy");
+                  Proxy = result ? result : "";
+          }
+   }
+
+   // Parse no_proxy, a , separated list of domains
+   if (getenv("no_proxy") != 0)
+   {
+      if (CheckDomainList(ServerName.Host,getenv("no_proxy")) == true)
+        Proxy = "";
+   }

    
    // Determine what host and port to use based on the proxy settings
    
    // Determine what host and port to use based on the proxy settings

-   int Port = 21;
+   int Port = 0;

    string Host;   
    if (Proxy.empty() == true)
    {
    string Host;   
    if (Proxy.empty() == true)
    {


@@ -123,52 +156,28 @@ bool FTPConn::Open(pkgAcqMethod *Owner)
         Port = Proxy.Port;
       Host = Proxy.Host;
    }
         Port = Proxy.Port;
       Host = Proxy.Host;
    }

+
+   /* Connect to the remote server. Since FTP is connection oriented we
+      want to make sure we get a new server every time we reconnect */
+   RotateDNS();
+   if (Connect(Host,Port,"ftp",21,ServerFd,TimeOut,Owner) == false)
+      return false;
+
+   // Login must be before getpeername otherwise dante won't work.
+   Owner->Status(_("Logging in"));
+   bool Res = Login();

    
    

-   /* We used a cached address record.. Yes this is against the spec but
-      the way we have setup our rotating dns suggests that this is more
-      sensible */
-   if (LastHost != Host)
-   {
-      Owner->Status("Connecting to %s",Host.c_str());
-
-      // Lookup the host
-      hostent *Addr = gethostbyname(Host.c_str());
-      if (Addr == 0 || Addr->h_addr_list[0] == 0)
-        return _error->Error("Could not resolve '%s'",Host.c_str());
-      LastHost = Host;
-      LastHostA = *(in_addr *)(Addr->h_addr_list[0]);
-   }
-   
-   Owner->Status("Connecting to %s (%s)",Host.c_str(),inet_ntoa(LastHostA));
+   // Get the remote server's address
+   PeerAddrLen = sizeof(PeerAddr);
+   if (getpeername(ServerFd,(sockaddr *)&PeerAddr,&PeerAddrLen) != 0)
+      return _error->Errno("getpeername",_("Unable to determine the peer name"));

    
    

-   // Get a socket
-   if ((ServerFd = socket(AF_INET,SOCK_STREAM,0)) < 0)
-      return _error->Errno("socket","Could not create a socket");
+   // Get the local machine's address
+   ServerAddrLen = sizeof(ServerAddr);
+   if (getsockname(ServerFd,(sockaddr *)&ServerAddr,&ServerAddrLen) != 0)
+      return _error->Errno("getsockname",_("Unable to determine the local name"));

    
    

-   // Connect to the server
-   struct sockaddr_in server;
-   server.sin_family = AF_INET;
-   server.sin_port = htons(Port);
-   server.sin_addr = LastHostA;
-   SetNonBlock(ServerFd,true);
-   if (connect(ServerFd,(sockaddr *)&server,sizeof(server)) < 0 &&
-       errno != EINPROGRESS)
-      return _error->Errno("socket","Could not create a socket");
-   Peer = server;
-   
-   /* This implements a timeout for connect by opening the connection
-      nonblocking */
-   if (WaitFd(ServerFd,true,TimeOut) == false)
-      return _error->Error("Could not connect, connection timed out");
-   unsigned int Err;
-   unsigned int Len = sizeof(Err);
-   if (getsockopt(ServerFd,SOL_SOCKET,SO_ERROR,&Err,&Len) != 0)
-      return _error->Errno("getsockopt","Failed");
-   if (Err != 0)
-      return _error->Error("Could not connect.");
-
-   Owner->Status("Logging in");
-   return Login();
+   return Res;

 }
                                                                        /*}}}*/
 // FTPConn::Login - Login to the remote server                         /*{{{*/
 }
                                                                        /*}}}*/
 // FTPConn::Login - Login to the remote server                         /*{{{*/


@@ -182,7 +191,7 @@ bool FTPConn::Login()
    
    // Setup the variables needed for authentication
    string User = "anonymous";
    
    // Setup the variables needed for authentication
    string User = "anonymous";

-   string Pass = "apt_get_ftp_2.0@debian.linux.user";
+   string Pass = "apt_get_ftp_2.1@debian.linux.user";

 
    // Fill in the user/pass
    if (ServerName.User.empty() == false)
 
    // Fill in the user/pass
    if (ServerName.User.empty() == false)


@@ -197,32 +206,27 @@ bool FTPConn::Login()
       if (ReadResp(Tag,Msg) == false)
         return false;
       if (Tag >= 400)
       if (ReadResp(Tag,Msg) == false)
         return false;
       if (Tag >= 400)

-        return _error->Error("Server refused our connection and said: %s",Msg.c_str());
+        return _error->Error(_("The server refused the connection and said: %s"),Msg.c_str());

       
       // Send the user
       if (WriteMsg(Tag,Msg,"USER %s",User.c_str()) == false)
         return false;
       if (Tag >= 400)
       
       // Send the user
       if (WriteMsg(Tag,Msg,"USER %s",User.c_str()) == false)
         return false;
       if (Tag >= 400)

-        return _error->Error("USER failed, server said: %s",Msg.c_str());
+        return _error->Error(_("USER failed, server said: %s"),Msg.c_str());

       
       

-      // Send the Password
-      if (WriteMsg(Tag,Msg,"PASS %s",Pass.c_str()) == false)
-        return false;
-      if (Tag >= 400)
-        return _error->Error("PASS failed, server said: %s",Msg.c_str());
+      if (Tag == 331) { // 331 User name okay, need password.
+         // Send the Password
+         if (WriteMsg(Tag,Msg,"PASS %s",Pass.c_str()) == false)
+            return false;
+         if (Tag >= 400)
+            return _error->Error(_("PASS failed, server said: %s"),Msg.c_str());
+      }

       
       // Enter passive mode
       
       // Enter passive mode

-      TryPassive = false;
-      if (_config->Exists("Acquire::FTP::Passive::" + ServerName.Host) == true &&
-         _config->FindB("Acquire::FTP::Passive::" + ServerName.Host,true) == true)
-      {
-        TryPassive = true;
-      }      
+      if (_config->Exists("Acquire::FTP::Passive::" + ServerName.Host) == true)
+        TryPassive = _config->FindB("Acquire::FTP::Passive::" + ServerName.Host,true);

       else
       else

-      {
-        if (_config->FindB("Acquire::FTP::Passive",true) == true)
-           TryPassive = true;
-      }      
+        TryPassive = _config->FindB("Acquire::FTP::Passive",true);      

    }
    else
    {      
    }
    else
    {      


@@ -230,13 +234,13 @@ bool FTPConn::Login()
       if (ReadResp(Tag,Msg) == false)
         return false;
       if (Tag >= 400)
       if (ReadResp(Tag,Msg) == false)
         return false;
       if (Tag >= 400)

-        return _error->Error("Server refused our connection and said: %s",Msg.c_str());
+        return _error->Error(_("The server refused the connection and said: %s"),Msg.c_str());

       
       // Perform proxy script execution
       Configuration::Item const *Opts = _config->Tree("Acquire::ftp::ProxyLogin");
       if (Opts == 0 || Opts->Child == 0)
       
       // Perform proxy script execution
       Configuration::Item const *Opts = _config->Tree("Acquire::ftp::ProxyLogin");
       if (Opts == 0 || Opts->Child == 0)

-        return _error->Error("A proxy server was specified but no login "
-                             "script, Acquire::ftp::ProxyLogin is empty.");
+        return _error->Error(_("A proxy server was specified but no login "
+                             "script, Acquire::ftp::ProxyLogin is empty."));

       Opts = Opts->Child;
 
       // Iterate over the entire login script
       Opts = Opts->Child;
 
       // Iterate over the entire login script


@@ -250,7 +254,7 @@ bool FTPConn::Login()
         if (ServerName.Port != 0)
            sprintf(SitePort,"%u",ServerName.Port);
         else
         if (ServerName.Port != 0)
            sprintf(SitePort,"%u",ServerName.Port);
         else

-           strcat("21",SitePort);
+           strcpy(SitePort,"21");

         string Tmp = Opts->Value;
         Tmp = SubstVar(Tmp,"$(PROXY_USER)",Proxy.User);
         Tmp = SubstVar(Tmp,"$(PROXY_PASS)",Proxy.Password);
         string Tmp = Opts->Value;
         Tmp = SubstVar(Tmp,"$(PROXY_USER)",Proxy.User);
         Tmp = SubstVar(Tmp,"$(PROXY_PASS)",Proxy.Password);


@@ -263,32 +267,33 @@ bool FTPConn::Login()
         if (WriteMsg(Tag,Msg,"%s",Tmp.c_str()) == false)
            return false;
         if (Tag >= 400)
         if (WriteMsg(Tag,Msg,"%s",Tmp.c_str()) == false)
            return false;
         if (Tag >= 400)

-           return _error->Error("Login script command '%s' failed, server said: %s",Tmp.c_str(),Msg.c_str());   
+           return _error->Error(_("Login script command '%s' failed, server said: %s"),Tmp.c_str(),Msg.c_str());        

       }
       
       // Enter passive mode
       TryPassive = false;
       }
       
       // Enter passive mode
       TryPassive = false;

-      if (_config->Exists("Acquire::FTP::Passive::" + ServerName.Host) == true &&
-         _config->FindB("Acquire::FTP::Passive::" + ServerName.Host,true) == true)
-      {
-        TryPassive = true;
-      }      
+      if (_config->Exists("Acquire::FTP::Passive::" + ServerName.Host) == true)
+        TryPassive = _config->FindB("Acquire::FTP::Passive::" + ServerName.Host,true);

       else
       {
       else
       {

-        if (_config->Exists("Acquire::FTP::Proxy::Passive") == true &&
-            _config->FindB("Acquire::FTP::Proxy::Passive",true) == true)
-           TryPassive = true;
+        if (_config->Exists("Acquire::FTP::Proxy::Passive") == true)
+           TryPassive = _config->FindB("Acquire::FTP::Proxy::Passive",true);

         else
         else

-           if (_config->FindB("Acquire::FTP::Passive",true) == true)
-              TryPassive = true;              
+           TryPassive = _config->FindB("Acquire::FTP::Passive",true);

       }            
    }
 
       }            
    }
 

+   // Force the use of extended commands
+   if (_config->Exists("Acquire::FTP::ForceExtended::" + ServerName.Host) == true)
+      ForceExtended = _config->FindB("Acquire::FTP::ForceExtended::" + ServerName.Host,true);
+   else
+      ForceExtended = _config->FindB("Acquire::FTP::ForceExtended",false);
+   

    // Binary mode
    if (WriteMsg(Tag,Msg,"TYPE I") == false)
       return false;
    if (Tag >= 400)
    // Binary mode
    if (WriteMsg(Tag,Msg,"TYPE I") == false)
       return false;
    if (Tag >= 400)

-      return _error->Error("TYPE failed, server said: %s",Msg.c_str());
+      return _error->Error(_("TYPE failed, server said: %s"),Msg.c_str());

    
    return true;
 }
    
    return true;
 }


@@ -298,6 +303,9 @@ bool FTPConn::Login()
 /* This performs a very simple buffered read. */
 bool FTPConn::ReadLine(string &Text)
 {
 /* This performs a very simple buffered read. */
 bool FTPConn::ReadLine(string &Text)
 {

+   if (ServerFd == -1)
+      return false;
+   

    // Suck in a line
    while (Len < sizeof(Buffer))
    {
    // Suck in a line
    while (Len < sizeof(Buffer))
    {


@@ -323,20 +331,23 @@ bool FTPConn::ReadLine(string &Text)
       if (WaitFd(ServerFd,false,TimeOut) == false)
       {
         Close();
       if (WaitFd(ServerFd,false,TimeOut) == false)
       {
         Close();

-        return _error->Error("Connection timeout");
+        return _error->Error(_("Connection timeout"));

       }
       
       // Suck it back
       }
       
       // Suck it back

-      int Res = read(ServerFd,Buffer,sizeof(Buffer) - Len);
+      int Res = read(ServerFd,Buffer + Len,sizeof(Buffer) - Len);
+      if (Res == 0)
+        _error->Error(_("Server closed the connection"));

       if (Res <= 0)
       {
       if (Res <= 0)
       {

+        _error->Errno("read",_("Read error"));

         Close();
         Close();

-        return _error->Errno("read","Read error");
+        return false;

       }      
       Len += Res;
    }
 
       }      
       Len += Res;
    }
 

-   return _error->Error("A response overflowed the buffer.");
+   return _error->Error(_("A response overflowed the buffer."));

 }
                                                                        /*}}}*/
 // FTPConn::ReadResp - Read a full response from the server            /*{{{*/
 }
                                                                        /*}}}*/
 // FTPConn::ReadResp - Read a full response from the server            /*{{{*/


@@ -353,7 +364,7 @@ bool FTPConn::ReadResp(unsigned int &Ret,string &Text)
    char *End;   
    Ret = strtol(Msg.c_str(),&End,10);
    if (End - Msg.c_str() != 3)
    char *End;   
    Ret = strtol(Msg.c_str(),&End,10);
    if (End - Msg.c_str() != 3)

-      return _error->Error("Protocol corruption");
+      return _error->Error(_("Protocol corruption"));

 
    // All done ?
    Text = Msg.c_str()+4;
 
    // All done ?
    Text = Msg.c_str()+4;


@@ -365,7 +376,7 @@ bool FTPConn::ReadResp(unsigned int &Ret,string &Text)
    }
    
    if (*End != '-')
    }
    
    if (*End != '-')

-      return _error->Error("Protocol corruption");
+      return _error->Error(_("Protocol corruption"));

    
    /* Okay, here we do the continued message trick. This is foolish, but
       proftpd follows the protocol as specified and wu-ftpd doesn't, so 
    
    /* Okay, here we do the continued message trick. This is foolish, but
       proftpd follows the protocol as specified and wu-ftpd doesn't, so 


@@ -431,14 +442,15 @@ bool FTPConn::WriteMsg(unsigned int &Ret,string &Text,const char *Fmt,...)
       if (WaitFd(ServerFd,true,TimeOut) == false)
       {
         Close();
       if (WaitFd(ServerFd,true,TimeOut) == false)
       {
         Close();

-        return _error->Error("Connection timeout");
+        return _error->Error(_("Connection timeout"));

       }
       
       int Res = write(ServerFd,S + Start,Len);
       if (Res <= 0)
       {
       }
       
       int Res = write(ServerFd,S + Start,Len);
       if (Res <= 0)
       {

+        _error->Errno("write",_("Write error"));

         Close();
         Close();

-        return _error->Errno("write","Write Error");
+        return false;

       }
       
       Len -= Res;
       }
       
       Len -= Res;


@@ -452,10 +464,19 @@ bool FTPConn::WriteMsg(unsigned int &Ret,string &Text,const char *Fmt,...)
 // ---------------------------------------------------------------------
 /* Try to enter passive mode, the return code does not indicate if passive
    mode could or could not be established, only if there was a fatal error. 
 // ---------------------------------------------------------------------
 /* Try to enter passive mode, the return code does not indicate if passive
    mode could or could not be established, only if there was a fatal error. 

-   Borrowed mostly from lftp. We have to enter passive mode every time 
- we make a data connection :| */
+   We have to enter passive mode every time we make a data connection :| */

 bool FTPConn::GoPasv()
 {
 bool FTPConn::GoPasv()
 {

+   /* The PASV command only works on IPv4 sockets, even though it could
+      in theory suppory IPv6 via an all zeros reply */
+   if (((struct sockaddr *)&PeerAddr)->sa_family != AF_INET || 
+       ForceExtended == true)
+      return ExtGoPasv();
+   
+   if (PasvAddr != 0)
+      freeaddrinfo(PasvAddr);
+   PasvAddr = 0;
+   

    // Try to enable pasv mode
    unsigned int Tag;
    string Msg;
    // Try to enable pasv mode
    unsigned int Tag;
    string Msg;


@@ -465,41 +486,139 @@ bool FTPConn::GoPasv()
    // Unsupported function
    string::size_type Pos = Msg.find('(');
    if (Tag >= 400 || Pos == string::npos)
    // Unsupported function
    string::size_type Pos = Msg.find('(');
    if (Tag >= 400 || Pos == string::npos)

-   {
-      memset(&PasvAddr,0,sizeof(PasvAddr));

       return true;
       return true;

-   }

 
    // Scan it
    unsigned a0,a1,a2,a3,p0,p1;
    if (sscanf(Msg.c_str() + Pos,"(%u,%u,%u,%u,%u,%u)",&a0,&a1,&a2,&a3,&p0,&p1) != 6)
 
    // Scan it
    unsigned a0,a1,a2,a3,p0,p1;
    if (sscanf(Msg.c_str() + Pos,"(%u,%u,%u,%u,%u,%u)",&a0,&a1,&a2,&a3,&p0,&p1) != 6)

+      return true;
+   
+   /* Some evil servers return 0 to mean their addr. We can actually speak
+      to these servers natively using IPv6 */
+   if (a0 == 0 && a1 == 0 && a2 == 0 && a3 == 0)

    {
    {

-      memset(&PasvAddr,0,sizeof(PasvAddr));
+      // Get the IP in text form
+      char Name[NI_MAXHOST];
+      char Service[NI_MAXSERV];
+      getnameinfo((struct sockaddr *)&PeerAddr,PeerAddrLen,
+                 Name,sizeof(Name),Service,sizeof(Service),
+                 NI_NUMERICHOST|NI_NUMERICSERV);
+      
+      struct addrinfo Hints;
+      memset(&Hints,0,sizeof(Hints));
+      Hints.ai_socktype = SOCK_STREAM;
+      Hints.ai_family = ((struct sockaddr *)&PeerAddr)->sa_family;
+      Hints.ai_flags |= AI_NUMERICHOST;
+      
+      // Get a new passive address.
+      char Port[100];
+      snprintf(Port,sizeof(Port),"%u",(p0 << 8) + p1);
+      if (getaddrinfo(Name,Port,&Hints,&PasvAddr) != 0)
+        return true;

       return true;
    }
    
       return true;
    }
    

-   // lftp used this horrid byte order manipulation.. Ik.
-   PasvAddr.sin_family = AF_INET;
-   unsigned char *a;
-   unsigned char *p;
-   a = (unsigned char *)&PasvAddr.sin_addr;
-   p = (unsigned char *)&PasvAddr.sin_port;
+   struct addrinfo Hints;
+   memset(&Hints,0,sizeof(Hints));
+   Hints.ai_socktype = SOCK_STREAM;
+   Hints.ai_family = AF_INET;
+   Hints.ai_flags |= AI_NUMERICHOST;

    
    

-   // Some evil servers return 0 to mean their addr
-   if (a0 == 0 && a1 == 0 && a2 == 0 && a3 == 0)
+   // Get a new passive address.
+   char Port[100];
+   snprintf(Port,sizeof(Port),"%u",(p0 << 8) + p1);
+   char Name[100];
+   snprintf(Name,sizeof(Name),"%u.%u.%u.%u",a0,a1,a2,a3);
+   if (getaddrinfo(Name,Port,&Hints,&PasvAddr) != 0)
+      return true;
+   return true;
+}
+                                                                       /*}}}*/
+// FTPConn::ExtGoPasv - Enter Extended Passive mode                    /*{{{*/
+// ---------------------------------------------------------------------
+/* Try to enter extended passive mode. See GoPasv above and RFC 2428 */
+bool FTPConn::ExtGoPasv()
+{
+   if (PasvAddr != 0)
+      freeaddrinfo(PasvAddr);
+   PasvAddr = 0;
+   
+   // Try to enable pasv mode
+   unsigned int Tag;
+   string Msg;
+   if (WriteMsg(Tag,Msg,"EPSV") == false)
+      return false;
+   
+   // Unsupported function
+   string::size_type Pos = Msg.find('(');
+   if (Tag >= 400 || Pos == string::npos)
+      return true;
+
+   // Scan it   
+   string::const_iterator List[4];
+   unsigned Count = 0;
+   Pos++;
+   for (string::const_iterator I = Msg.begin() + Pos; I < Msg.end(); I++)

    {
    {

-      PasvAddr.sin_addr = Peer.sin_addr;
+      if (*I != Msg[Pos])
+        continue;
+      if (Count >= 4)
+        return true;
+      List[Count++] = I;
+   }
+   if (Count != 4)
+      return true;
+   
+   // Break it up ..
+   unsigned long Proto = 0;
+   unsigned long Port = 0;
+   string IP;
+   IP = string(List[1]+1,List[2]);
+   Port = atoi(string(List[2]+1,List[3]).c_str());
+   if (IP.empty() == false)
+      Proto = atoi(string(List[0]+1,List[1]).c_str());
+   
+   if (Port == 0)
+      return false;
+
+   // String version of the port
+   char PStr[100];
+   snprintf(PStr,sizeof(PStr),"%lu",Port);
+
+   // Get the IP in text form
+   struct addrinfo Hints;
+   memset(&Hints,0,sizeof(Hints));
+   Hints.ai_socktype = SOCK_STREAM;
+   Hints.ai_flags |= AI_NUMERICHOST;
+   
+   /* The RFC defined case, connect to the old IP/protocol using the
+      new port. */
+   if (IP.empty() == true)
+   {
+      // Get the IP in text form
+      char Name[NI_MAXHOST];
+      char Service[NI_MAXSERV];
+      getnameinfo((struct sockaddr *)&PeerAddr,PeerAddrLen,
+                 Name,sizeof(Name),Service,sizeof(Service),
+                 NI_NUMERICHOST|NI_NUMERICSERV);
+      IP = Name;
+      Hints.ai_family = ((struct sockaddr *)&PeerAddr)->sa_family;

    }
    else
    {
    }
    else
    {

-      a[0] = a0; 
-      a[1] = a1; 
-      a[2] = a2; 
-      a[3] = a3;
+      // Get the family..
+      Hints.ai_family = 0;
+      for (unsigned J = 0; AFMap[J].Family != 0; J++)
+        if (AFMap[J].IETFFamily == Proto)
+           Hints.ai_family = AFMap[J].Family;
+      if (Hints.ai_family == 0)
+        return true;

    }
    
    }
    

-   p[0] = p0;
-   p[1] = p1;
+   // Get a new passive address.
+   int Res;
+   if ((Res = getaddrinfo(IP.c_str(),PStr,&Hints,&PasvAddr)) != 0)
+      return true;

    
    return true;
 }
    
    return true;
 }


@@ -541,18 +660,7 @@ bool FTPConn::ModTime(const char *Path, time_t &Time)
       return true;
    
    // Parse it
       return true;
    
    // Parse it

-   struct tm tm;
-   memset(&tm,0,sizeof(tm));   
-   if (sscanf(Msg.c_str(),"%4d%2d%2d%2d%2d%2d",&tm.tm_year,&tm.tm_mon,
-             &tm.tm_mday,&tm.tm_hour,&tm.tm_min,&tm.tm_sec) != 6)
-      return true;
-   
-   tm.tm_year -= 1900;
-   tm.tm_mon--;
-   
-   /* We use timegm from the GNU C library, libapt-pkg will provide this
-      symbol if it does not exist */
-   Time = timegm(&tm);
+   StrToTime(Msg,Time);

    return true;
 }
                                                                        /*}}}*/
    return true;
 }
                                                                        /*}}}*/


@@ -571,79 +679,128 @@ bool FTPConn::CreateDataFd()
         return false;
       
       // Oops, didn't work out, don't bother trying again.
         return false;
       
       // Oops, didn't work out, don't bother trying again.

-      if (PasvAddr.sin_port == 0)
+      if (PasvAddr == 0)

         TryPassive = false;
    }
    
    // Passive mode?
         TryPassive = false;
    }
    
    // Passive mode?

-   if (PasvAddr.sin_port != 0)
+   if (PasvAddr != 0)

    {
       // Get a socket
    {
       // Get a socket

-      if ((DataFd = socket(AF_INET,SOCK_STREAM,0)) < 0)
-        return _error->Errno("socket","Could not create a socket");
+      if ((DataFd = socket(PasvAddr->ai_family,PasvAddr->ai_socktype,
+                          PasvAddr->ai_protocol)) < 0)
+        return _error->Errno("socket",_("Could not create a socket"));

       
       // Connect to the server
       SetNonBlock(DataFd,true);
       
       // Connect to the server
       SetNonBlock(DataFd,true);

-      if (connect(DataFd,(sockaddr *)&PasvAddr,sizeof(PasvAddr)) < 0 &&
+      if (connect(DataFd,PasvAddr->ai_addr,PasvAddr->ai_addrlen) < 0 &&

          errno != EINPROGRESS)
          errno != EINPROGRESS)

-        return _error->Errno("socket","Could not create a socket");
+        return _error->Errno("socket",_("Could not create a socket"));

    
       /* This implements a timeout for connect by opening the connection
    
       /* This implements a timeout for connect by opening the connection

-       nonblocking */
-      if (WaitFd(ServerFd,true,TimeOut) == false)
-        return _error->Error("Could not connect data socket, connection timed out");
+         nonblocking */
+      if (WaitFd(DataFd,true,TimeOut) == false)
+        return _error->Error(_("Could not connect data socket, connection timed out"));

       unsigned int Err;
       unsigned int Len = sizeof(Err);
       unsigned int Err;
       unsigned int Len = sizeof(Err);

-      if (getsockopt(ServerFd,SOL_SOCKET,SO_ERROR,&Err,&Len) != 0)
-        return _error->Errno("getsockopt","Failed");
+      if (getsockopt(DataFd,SOL_SOCKET,SO_ERROR,&Err,&Len) != 0)
+        return _error->Errno("getsockopt",_("Failed"));

       if (Err != 0)
       if (Err != 0)

-        return _error->Error("Could not connect.");
-      
+        return _error->Error(_("Could not connect passive socket."));
+

       return true;
    }
    
    // Port mode :<
       return true;
    }
    
    // Port mode :<

-   if (DataListenFd == -1)
+   close(DataListenFd);
+   DataListenFd = -1;
+
+   // Get the information for a listening socket.
+   struct addrinfo *BindAddr = 0;
+   struct addrinfo Hints;
+   memset(&Hints,0,sizeof(Hints));
+   Hints.ai_socktype = SOCK_STREAM;
+   Hints.ai_flags |= AI_PASSIVE;
+   Hints.ai_family = ((struct sockaddr *)&ServerAddr)->sa_family;
+   int Res;
+   if ((Res = getaddrinfo(0,"0",&Hints,&BindAddr)) != 0)
+      return _error->Error(_("getaddrinfo was unable to get a listening socket"));
+   
+   // Construct the socket
+   if ((DataListenFd = socket(BindAddr->ai_family,BindAddr->ai_socktype,
+                             BindAddr->ai_protocol)) < 0)

    {
    {

-      // Get a socket
-      if ((DataListenFd = socket(AF_INET,SOCK_STREAM,0)) < 0)
-        return _error->Errno("socket","Could not create a socket");
-      
-      // Bind and listen
-      sockaddr_in Addr;
-      memset(&Addr,0,sizeof(Addr));
-      if (bind(DataListenFd,(sockaddr *)&Addr,sizeof(Addr)) < 0)
-        return _error->Errno("bind","Could not bind a socket");
-      if (listen(DataListenFd,1) < 0)
-        return _error->Errno("listen","Could not listen on the socket");
-      SetNonBlock(DataListenFd,true);
+      freeaddrinfo(BindAddr);
+      return _error->Errno("socket",_("Could not create a socket"));

    }
    
    }
    

+   // Bind and listen
+   if (bind(DataListenFd,BindAddr->ai_addr,BindAddr->ai_addrlen) < 0)
+   {
+      freeaddrinfo(BindAddr);
+      return _error->Errno("bind",_("Could not bind a socket"));
+   }
+   freeaddrinfo(BindAddr);   
+   if (listen(DataListenFd,1) < 0)
+      return _error->Errno("listen",_("Could not listen on the socket"));
+   SetNonBlock(DataListenFd,true);
+   

    // Determine the name to send to the remote
    // Determine the name to send to the remote

-   sockaddr_in Addr;
-   sockaddr_in Addr2;
-   socklen_t Jnk = sizeof(Addr);
-   if (getsockname(DataListenFd,(sockaddr *)&Addr,&Jnk) < 0)
-      return _error->Errno("getsockname","Could not determine the socket's name");
-   Jnk = sizeof(Addr2);
-   if (getsockname(ServerFd,(sockaddr *)&Addr2,&Jnk) < 0)
-      return _error->Errno("getsockname","Could not determine the socket's name");
-   
-   // This bit ripped from qftp
-   unsigned long badr = ntohl(*(unsigned long *)&Addr2.sin_addr);
-   unsigned long bp = ntohs(Addr.sin_port);
-
-   // Send the port command
+   struct sockaddr_storage Addr;
+   socklen_t AddrLen = sizeof(Addr);
+   if (getsockname(DataListenFd,(sockaddr *)&Addr,&AddrLen) < 0)
+      return _error->Errno("getsockname",_("Could not determine the socket's name"));
+
+
+   // Reverse the address. We need the server address and the data port.
+   char Name[NI_MAXHOST];
+   char Service[NI_MAXSERV];
+   char Service2[NI_MAXSERV];
+   getnameinfo((struct sockaddr *)&Addr,AddrLen,
+              Name,sizeof(Name),Service,sizeof(Service),
+              NI_NUMERICHOST|NI_NUMERICSERV);
+   getnameinfo((struct sockaddr *)&ServerAddr,ServerAddrLen,
+              Name,sizeof(Name),Service2,sizeof(Service2),
+              NI_NUMERICHOST|NI_NUMERICSERV);
+
+   // Send off an IPv4 address in the old port format
+   if (((struct sockaddr *)&Addr)->sa_family == AF_INET && 
+       ForceExtended == false)
+   {
+      // Convert the dots in the quad into commas
+      for (char *I = Name; *I != 0; I++)
+        if (*I == '.')
+           *I = ',';
+      unsigned long Port = atoi(Service);
+      
+      // Send the port command
+      unsigned int Tag;
+      string Msg;
+      if (WriteMsg(Tag,Msg,"PORT %s,%d,%d",
+                  Name,
+                  (int)(Port >> 8) & 0xff, (int)(Port & 0xff)) == false)
+        return false;
+      if (Tag >= 400)
+        return _error->Error(_("Unable to send PORT command"));
+      return true;
+   }
+
+   // Construct an EPRT command
+   unsigned Proto = 0;
+   for (unsigned J = 0; AFMap[J].Family != 0; J++)
+      if (AFMap[J].Family == ((struct sockaddr *)&Addr)->sa_family)
+        Proto = AFMap[J].IETFFamily;
+   if (Proto == 0)
+      return _error->Error(_("Unknown address family %u (AF_*)"),
+                          ((struct sockaddr *)&Addr)->sa_family);
+   
+   // Send the EPRT command

    unsigned int Tag;
    string Msg;
    unsigned int Tag;
    string Msg;

-   if (WriteMsg(Tag,Msg,"PORT %d,%d,%d,%d,%d,%d", 
-               (int) (badr >> 24) & 0xff, (int) (badr >> 16) & 0xff, 
-               (int) (badr >> 8) & 0xff,  (int) badr & 0xff, 
-               (int) (bp >> 8) & 0xff, (int) bp & 0xff) == false)
+   if (WriteMsg(Tag,Msg,"EPRT |%u|%s|%s|",Proto,Name,Service) == false)

       return false;
    if (Tag >= 400)
       return false;
    if (Tag >= 400)

-      return _error->Error("Unable to send port command");
-
+      return _error->Error(_("EPRT failed, server said: %s"),Msg.c_str());

    return true;
 }
                                                                        /*}}}*/
    return true;
 }
                                                                        /*}}}*/


@@ -654,7 +811,7 @@ bool FTPConn::CreateDataFd()
 bool FTPConn::Finalize()
 {
    // Passive mode? Do nothing
 bool FTPConn::Finalize()
 {
    // Passive mode? Do nothing

-   if (PasvAddr.sin_port != 0)
+   if (PasvAddr != 0)

       return true;
    
    // Close any old socket..
       return true;
    
    // Close any old socket..


@@ -663,15 +820,18 @@ bool FTPConn::Finalize()
    
    // Wait for someone to connect..
    if (WaitFd(DataListenFd,false,TimeOut) == false)
    
    // Wait for someone to connect..
    if (WaitFd(DataListenFd,false,TimeOut) == false)

-      return _error->Error("Data socket connect timed out");
+      return _error->Error(_("Data socket connect timed out"));

       
    // Accept the connection
    struct sockaddr_in Addr;
    socklen_t Len = sizeof(Addr);
    DataFd = accept(DataListenFd,(struct sockaddr *)&Addr,&Len);
    if (DataFd < 0)
       
    // Accept the connection
    struct sockaddr_in Addr;
    socklen_t Len = sizeof(Addr);
    DataFd = accept(DataListenFd,(struct sockaddr *)&Addr,&Len);
    if (DataFd < 0)

-      return _error->Errno("accept","Unable to accept connection");
+      return _error->Errno("accept",_("Unable to accept connection"));

 
 

+   close(DataListenFd);
+   DataListenFd = -1;
+   

    return true;
 }
                                                                        /*}}}*/
    return true;
 }
                                                                        /*}}}*/


@@ -680,7 +840,7 @@ 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 Resume,
 /* 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 Resume,

-                 MD5Summation &MD5,bool &Missing)
+                 Hashes &Hash,bool &Missing)

 {
    Missing = false;
    if (CreateDataFd() == false)
 {
    Missing = false;
    if (CreateDataFd() == false)


@@ -698,6 +858,18 @@ bool FTPConn::Get(const char *Path,FileFd &To,unsigned long Resume,
    
    if (To.Truncate(Resume) == false)
       return false;
    
    if (To.Truncate(Resume) == false)
       return false;

+
+   if (To.Seek(0) == false)
+      return false;
+   
+   if (Resume != 0)
+   {
+      if (Hash.AddFD(To.Fd(),Resume) == false)
+      {
+        _error->Errno("read",_("Problem hashing file"));
+        return false;
+      }
+   }

    
    // Send the get command
    if (WriteMsg(Tag,Msg,"RETR %s",Path) == false)
    
    // Send the get command
    if (WriteMsg(Tag,Msg,"RETR %s",Path) == false)


@@ -707,7 +879,7 @@ bool FTPConn::Get(const char *Path,FileFd &To,unsigned long Resume,
    {
       if (Tag == 550)
         Missing = true;
    {
       if (Tag == 550)
         Missing = true;

-      return _error->Error("Unable to fetch file, server said '%s'",Msg.c_str());
+      return _error->Error(_("Unable to fetch file, server said '%s'"),Msg.c_str());

    }
    
    // Finish off the data connection
    }
    
    // Finish off the data connection


@@ -720,8 +892,11 @@ bool FTPConn::Get(const char *Path,FileFd &To,unsigned long Resume,
    {
       // Wait for some data..
       if (WaitFd(DataFd,false,TimeOut) == false)
    {
       // Wait for some data..
       if (WaitFd(DataFd,false,TimeOut) == false)

-        return _error->Error("Data socket connect timed out");
-    
+      {
+        Close();
+        return _error->Error(_("Data socket timed out"));
+      }
+      

       // Read the data..
       int Res = read(DataFd,Buffer,sizeof(Buffer));
       if (Res == 0)
       // Read the data..
       int Res = read(DataFd,Buffer,sizeof(Buffer));
       if (Res == 0)


@@ -732,9 +907,13 @@ bool FTPConn::Get(const char *Path,FileFd &To,unsigned long Resume,
            continue;
         break;
       }
            continue;
         break;
       }

-      
+   
+      Hash.Add(Buffer,Res);

       if (To.Write(Buffer,Res) == false)
       if (To.Write(Buffer,Res) == false)

+      {
+        Close();

         return false;
         return false;

+      }      

    }
 
    // All done
    }
 
    // All done


@@ -745,7 +924,7 @@ bool FTPConn::Get(const char *Path,FileFd &To,unsigned long Resume,
    if (ReadResp(Tag,Msg) == false)
       return false;
    if (Tag >= 400)
    if (ReadResp(Tag,Msg) == false)
       return false;
    if (Tag >= 400)

-      return _error->Error("Data transfer failed, server said '%s'",Msg.c_str());
+      return _error->Error(_("Data transfer failed, server said '%s'"),Msg.c_str());

    return true;
 }
                                                                        /*}}}*/
    return true;
 }
                                                                        /*}}}*/


@@ -769,7 +948,7 @@ FtpMethod::FtpMethod() : pkgAcqMethod("1.0",SendConfig)
 void FtpMethod::SigTerm(int)
 {
    if (FailFd == -1)
 void FtpMethod::SigTerm(int)
 {
    if (FailFd == -1)

-      exit(100);
+      _exit(100);

    close(FailFd);
    
    // Timestamp
    close(FailFd);
    
    // Timestamp


@@ -778,7 +957,7 @@ void FtpMethod::SigTerm(int)
    UBuf.modtime = FailTime;
    utime(FailFile.c_str(),&UBuf);
    
    UBuf.modtime = FailTime;
    utime(FailFile.c_str(),&UBuf);
    

-   exit(100);
+   _exit(100);

 }
                                                                        /*}}}*/
 // FtpMethod::Configuration - Handle a configuration message           /*{{{*/
 }
                                                                        /*}}}*/
 // FtpMethod::Configuration - Handle a configuration message           /*{{{*/


@@ -795,7 +974,7 @@ bool FtpMethod::Configuration(string Message)
                                                                        /*}}}*/
 // FtpMethod::Fetch - Fetch a file                                     /*{{{*/
 // ---------------------------------------------------------------------
                                                                        /*}}}*/
 // FtpMethod::Fetch - Fetch a file                                     /*{{{*/
 // ---------------------------------------------------------------------

-/* */
+/* Fetch a single file, called by the base class..  */

 bool FtpMethod::Fetch(FetchItem *Itm)
 {
    URI Get = Itm->Uri;
 bool FtpMethod::Fetch(FetchItem *Itm)
 {
    URI Get = Itm->Uri;


@@ -814,11 +993,13 @@ bool FtpMethod::Fetch(FetchItem *Itm)
    // Could not connect is a transient error..
    if (Server->Open(this) == false)
    {
    // Could not connect is a transient error..
    if (Server->Open(this) == false)
    {

+      Server->Close();

       Fail(true);
       return true;
    }
    
    // Get the files information
       Fail(true);
       return true;
    }
    
    // Get the files information

+   Status(_("Query"));

    unsigned long Size;
    if (Server->Size(File,Size) == false ||
        Server->ModTime(File,FailTime) == false)
    unsigned long Size;
    if (Server->Size(File,Size) == false ||
        Server->ModTime(File,FailTime) == false)


@@ -845,17 +1026,18 @@ bool FtpMethod::Fetch(FetchItem *Itm)
       {
         Res.Size = Buf.st_size;
         Res.LastModified = Buf.st_mtime;
       {
         Res.Size = Buf.st_size;
         Res.LastModified = Buf.st_mtime;

+        Res.ResumePoint = Buf.st_size;

         URIDone(Res);
         return true;
       }
       
       // Resume?
         URIDone(Res);
         return true;
       }
       
       // Resume?

-      if (FailTime == Buf.st_mtime && Size < (unsigned)Buf.st_size)
+      if (FailTime == Buf.st_mtime && Size > (unsigned)Buf.st_size)

         Res.ResumePoint = Buf.st_size;
    }
    
    // Open the file
         Res.ResumePoint = Buf.st_size;
    }
    
    // Open the file

-   MD5Summation MD5;
+   Hashes Hash;

    {
       FileFd Fd(Itm->DestFile,FileFd::WriteAny);
       if (_error->PendingError() == true)
    {
       FileFd Fd(Itm->DestFile,FileFd::WriteAny);
       if (_error->PendingError() == true)


@@ -868,11 +1050,22 @@ bool FtpMethod::Fetch(FetchItem *Itm)
       FailFd = Fd.Fd();
       
       bool Missing;
       FailFd = Fd.Fd();
       
       bool Missing;

-      if (Server->Get(File,Fd,Res.ResumePoint,MD5,Missing) == false)
+      if (Server->Get(File,Fd,Res.ResumePoint,Hash,Missing) == false)

       {
       {

-        // If the file is missing we hard fail otherwise transient fail
-        if (Missing == true)
+        Fd.Close();
+        
+        // Timestamp
+        struct utimbuf UBuf;
+        UBuf.actime = FailTime;
+        UBuf.modtime = FailTime;
+        utime(FailFile.c_str(),&UBuf);
+        
+        // If the file is missing we hard fail and delete the destfile
+        // otherwise transient fail
+        if (Missing == true) {
+           unlink(FailFile.c_str());

            return false;
            return false;

+        }

         Fail(true);
         return true;
       }
         Fail(true);
         return true;
       }


@@ -881,11 +1074,10 @@ bool FtpMethod::Fetch(FetchItem *Itm)
    }
    
    Res.LastModified = FailTime;
    }
    
    Res.LastModified = FailTime;

-   Res.MD5Sum = MD5.Result();
+   Res.TakeHashes(Hash);

    
    // Timestamp
    struct utimbuf UBuf;
    
    // Timestamp
    struct utimbuf UBuf;

-   time(&UBuf.actime);

    UBuf.actime = FailTime;
    UBuf.modtime = FailTime;
    utime(Queue->DestFile.c_str(),&UBuf);
    UBuf.actime = FailTime;
    UBuf.modtime = FailTime;
    utime(Queue->DestFile.c_str(),&UBuf);


@@ -897,8 +1089,33 @@ bool FtpMethod::Fetch(FetchItem *Itm)
 }
                                                                        /*}}}*/
 
 }
                                                                        /*}}}*/
 

-int main()
+int main(int argc,const char *argv[])

 { 
 { 

+   setlocale(LC_ALL, "");
+
+   /* See if we should be come the http client - we do this for http
+      proxy urls */
+   if (getenv("ftp_proxy") != 0)
+   {
+      URI Proxy = string(getenv("ftp_proxy"));
+      
+      // Run the HTTP method
+      if (Proxy.Access == "http")
+      {
+        // Copy over the environment setting
+        char S[300];
+        snprintf(S,sizeof(S),"http_proxy=%s",getenv("ftp_proxy"));
+        putenv(S);
+        putenv((char *)"no_proxy=");
+        
+        // Run the http method
+        string Path = flNotFile(argv[0]) + "http";
+        execl(Path.c_str(),Path.c_str(),(char *)NULL);
+        cerr << _("Unable to invoke ") << Path << endl;
+        exit(100);
+      }      
+   }
+   

    FtpMethod Mth;
    
    return Mth.Run();
    FtpMethod Mth;
    
    return Mth.Run();