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@@ -0,0 +1,143 @@
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+// -*- mode: cpp; mode: fold -*-
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+// Description /*{{{*/
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+// $Id: connect.cc,v 1.1 1999/05/29 03:25:03 jgg Exp $
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+/* ######################################################################
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+
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+ Connect - Replacement connect call
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+
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+ ##################################################################### */
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+ /*}}}*/
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+// Include Files /*{{{*/
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+#include "connect.h"
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+#include <apt-pkg/error.h>
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+#include <apt-pkg/fileutl.h>
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+
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+#include <stdio.h>
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+#include <errno.h>
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+#include <unistd.h>
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+
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+// Internet stuff
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+#include <netinet/in.h>
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+#include <sys/socket.h>
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+#include <arpa/inet.h>
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+#include <netdb.h>
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+
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+#include "rfc2553emu.h"
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+ /*}}}*/
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+
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+static string LastHost;
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+static int LastPort = 0;
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+static struct addrinfo *LastHostAddr = 0;
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+static struct addrinfo *LastUsed = 0;
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+
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+// DoConnect - Attempt a connect operation /*{{{*/
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+// ---------------------------------------------------------------------
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+/* This helper function attempts a connection to a single address. */
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+static bool DoConnect(struct addrinfo *Addr,string Host,
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+ unsigned long TimeOut,int &Fd,pkgAcqMethod *Owner)
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+{
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+ // Show a status indicator
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+ char Name[NI_MAXHOST];
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+ Name[0] = 0;
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+ getnameinfo(Addr->ai_addr,Addr->ai_addrlen,
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+ Name,sizeof(Name),0,0,NI_NUMERICHOST);
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+ Owner->Status("Connecting to %s (%s)",Host.c_str(),Name);
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+
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+ // Get a socket
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+ if ((Fd = socket(Addr->ai_family,Addr->ai_socktype,
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+ Addr->ai_protocol)) < 0)
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+ return _error->Errno("socket","Could not create a socket");
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+
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+ SetNonBlock(Fd,true);
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+ if (connect(Fd,Addr->ai_addr,Addr->ai_addrlen) < 0 &&
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+ errno != EINPROGRESS)
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+ return _error->Errno("connect","Cannot initiate the connection "
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+ "to %s (%s).",Host.c_str(),Name);
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+
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+ /* This implements a timeout for connect by opening the connection
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+ nonblocking */
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+ if (WaitFd(Fd,true,TimeOut) == false)
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+ return _error->Error("Could not connect to %s (%s), "
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+ "connection timed out",Host.c_str(),Name);
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+
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+ // Check the socket for an error condition
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+ unsigned int Err;
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+ unsigned int Len = sizeof(Err);
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+ if (getsockopt(Fd,SOL_SOCKET,SO_ERROR,&Err,&Len) != 0)
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+ return _error->Errno("getsockopt","Failed");
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+
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+ if (Err != 0)
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+ return _error->Error("Could not connect to %s (%s).",Host.c_str(),Name);
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+
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+ return true;
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+}
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+ /*}}}*/
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+// Connect - Connect to a server /*{{{*/
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+// ---------------------------------------------------------------------
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+/* Performs a connection to the server */
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+bool Connect(string Host,int Port,const char *Service,int &Fd,
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+ unsigned long TimeOut,pkgAcqMethod *Owner)
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+{
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+ if (_error->PendingError() == true)
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+ return false;
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+
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+ /* We used a cached address record.. Yes this is against the spec but
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+ the way we have setup our rotating dns suggests that this is more
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+ sensible */
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+ if (LastHost != Host || LastPort != Port)
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+ {
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+ Owner->Status("Connecting to %s",Host.c_str());
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+
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+ // Lookup the host
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+ char S[300];
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+ if (Port != 0)
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+ snprintf(S,sizeof(S),"%u",Port);
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+ else
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+ snprintf(S,sizeof(S),"%s",Service);
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+
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+ // Free the old address structure
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+ if (LastHostAddr != 0)
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+ {
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+ freeaddrinfo(LastHostAddr);
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+ LastHostAddr = 0;
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+ }
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+
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+ // We only understand SOCK_STREAM sockets.
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+ struct addrinfo Hints;
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+ memset(&Hints,0,sizeof(Hints));
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+ Hints.ai_socktype = SOCK_STREAM;
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+
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+ // Resolve both the host and service simultaneously
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+ if (getaddrinfo(Host.c_str(),S,&Hints,&LastHostAddr) != 0 ||
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+ LastHostAddr == 0)
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+ return _error->Error("Could not resolve '%s'",Host.c_str());
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+
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+ LastHost = Host;
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+ LastPort = Port;
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+ LastUsed = 0;
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+ }
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+
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+ // Get the printable IP address
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+ struct addrinfo *CurHost = LastHostAddr;
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+ if (LastUsed != 0)
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+ CurHost = LastUsed;
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+
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+ while (CurHost != 0)
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+ {
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+ if (DoConnect(CurHost,Host,TimeOut,Fd,Owner) == true)
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+ {
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+ LastUsed = CurHost;
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+ return true;
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+ }
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+ close(Fd);
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+ Fd = -1;
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+
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+ CurHost = CurHost->ai_next;
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+ LastUsed = 0;
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+ if (CurHost != 0)
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+ _error->Discard();
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+ }
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+
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+ return false;
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+}
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+ /*}}}*/
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