Fix conffile prompt regression (LP: #1260297)

This fixes a regression in the conffile prompt for the progress-fd
and adds a testcase to ensure this does not regress again.

apt-pkg/deb/dpkgpm.cc

@@ -44,6 +44,7 @@
 #include <unistd.h>
 #include <sys/ioctl.h>
 #include <pty.h>
+#include <stdio.h>
 
 #include <apti18n.h>
 									/*}}}*/
@@ -596,7 +597,7 @@ void pkgDPkgPM::ProcessDpkgStatusLine(char *line)
       errors look like this:
       'status: /var/cache/apt/archives/krecipes_0.8.1-0ubuntu1_i386.deb : error : trying to overwrite `/usr/share/doc/kde/HTML/en/krecipes/krectip.png', which is also in package krecipes-data 
       and conffile-prompt like this
-      'status: conffile-prompt: conffile : 'current-conffile' 'new-conffile' useredited distedited
+      'status:/etc/compiz.conf/compiz.conf :  conffile-prompt: 'current-conffile' 'new-conffile' useredited distedited
    */
    if (prefix == "status")
    {
@@ -608,7 +609,7 @@ void pkgDPkgPM::ProcessDpkgStatusLine(char *line)
          WriteApportReport(list[1].c_str(), list[3].c_str());
          return;
       }
-      else if(action == "conffile")
+      else if(action == "conffile-prompt")
       {
          d->progress->ConffilePrompt(list[1], PackagesDone, PackagesTotal,
                                      list[3]);
@@ -1036,7 +1037,10 @@ void pkgDPkgPM::StartPtyMagic()
    if (tcgetattr(STDOUT_FILENO, &d->tt) == 0)
    {
        ioctl(1, TIOCGWINSZ, (char *)&win);
-       if (openpty(&d->master, &d->slave, NULL, &d->tt, &win) < 0)
+       if (_config->FindB("Dpkg::Use-Pty", true) == false)
+       {
+           d->master = d->slave = -1;
+       } else if (openpty(&d->master, &d->slave, NULL, &d->tt, &win) < 0)
        {
            _error->Errno("openpty", _("Can not write log (%s)"), _("Is /dev/pts mounted?"));
            d->master = d->slave = -1;

apt-pkg/install-progress.cc

@@ -9,7 +9,7 @@
 #include <sys/ioctl.h>
 #include <sstream>
 #include <fcntl.h>
-
+#include <stdio.h>
 
 namespace APT {
 namespace Progress {

test/integration/test-apt-progress-fd-conffile

@@ -0,0 +1,43 @@
+#!/bin/sh
+set -e
+
+TESTDIR=$(readlink -f $(dirname $0))
+. $TESTDIR/framework
+
+setupenvironment
+configarchitecture 'native'
+
+# old conffile
+setupsimplenativepackage 'compiz-core' 'native' '1.0' 'unstable'
+BUILDDIR='incoming/compiz-core-1.0'
+mkdir -p ${BUILDDIR}/debian/compiz-core/etc
+echo 'foo=bar;' > ${BUILDDIR}/compiz.conf
+echo 'compiz.conf	/etc/compiz.conf' >> ${BUILDDIR}/debian/install
+buildpackage "$BUILDDIR" 'unstable' 'main' 'native'
+rm -rf "$BUILDDIR"
+
+# new conffile
+setupsimplenativepackage 'compiz-core' 'native' '2.0' 'unstable'
+BUILDDIR='incoming/compiz-core-2.0'
+mkdir -p ${BUILDDIR}/debian/compiz-core/etc
+echo 'foo2=bar2;' > ${BUILDDIR}/compiz.conf
+echo 'compiz.conf	/etc/compiz.conf' >> ${BUILDDIR}/debian/install
+buildpackage "$BUILDDIR" 'unstable' 'main' 'native'
+rm -rf "$BUILDDIR"
+
+setupaptarchive
+
+testsuccess aptget install compiz-core=1.0
+
+# fake conffile change
+echo "meep" >> rootdir/etc/compiz.conf/compiz.conf
+
+# install
+exec 3> apt-progress.log
+echo n | aptget install compiz-core=2.0  -o APT::Status-Fd=3 -o Dpkg::Use-Pty=false
+
+# and ensure there is a conffile message in the file
+msgtest "Conffile prompt in apt-progress.log"
+grep -q "pmconffile:/etc/compiz.conf/compiz.conf" apt-progress.log && msgpass || (cat apt-progress.log && msgfail)
+
+cat apt-progress.log