Adding upstream version 1.8.2.3.upstream/1.8.2.3upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 335 insertions, 0 deletions

diff --git a/cmdline/apt-extracttemplates.cc b/cmdline/apt-extracttemplates.cc
new file mode 100644
index 0000000..bc8a27d
--- /dev/null
+++ b/cmdline/apt-extracttemplates.cc
@@ -0,0 +1,335 @@
+// -*- mode: cpp; mode: fold -*-
+// Description								/*{{{*/
+/* ######################################################################
+   
+   APT Extract Templates - Program to extract debconf config and template
+                           files
+
+   This is a simple program to extract config and template information 
+   from Debian packages. It can be used to speed up the preconfiguration
+   process for debconf-enabled packages
+   
+   ##################################################################### */
+									/*}}}*/
+// Include Files							/*{{{*/
+#include <config.h>
+
+#include <apt-pkg/cmndline.h>
+#include <apt-pkg/configuration.h>
+#include <apt-pkg/debfile.h>
+#include <apt-pkg/deblistparser.h>
+#include <apt-pkg/dirstream.h>
+#include <apt-pkg/error.h>
+#include <apt-pkg/fileutl.h>
+#include <apt-pkg/init.h>
+#include <apt-pkg/mmap.h>
+#include <apt-pkg/pkgcache.h>
+#include <apt-pkg/pkgcachegen.h>
+#include <apt-pkg/pkgsystem.h>
+#include <apt-pkg/sourcelist.h>
+#include <apt-pkg/strutl.h>
+#include <apt-pkg/tagfile.h>
+#include <apt-pkg/version.h>
+
+#include <apt-private/private-cmndline.h>
+#include <apt-private/private-main.h>
+
+#include <iostream>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "apt-extracttemplates.h"
+
+#include <apti18n.h>
+									/*}}}*/
+
+using namespace std;
+
+pkgCache *DebFile::Cache = 0;
+
+// DebFile::DebFile - Construct the DebFile object			/*{{{*/
+// ---------------------------------------------------------------------
+/* */
+DebFile::DebFile(const char *debfile)
+	: File(debfile, FileFd::ReadOnly), Control(NULL), ControlLen(0),
+	  DepOp(0), PreDepOp(0), Config(0), Template(0), Which(None)
+{
+}
+									/*}}}*/
+// DebFile::~DebFile - Destruct the DebFile object			/*{{{*/
+// ---------------------------------------------------------------------
+/* */
+DebFile::~DebFile()
+{
+	delete [] Control;
+	delete [] Config;
+	delete [] Template;
+}
+									/*}}}*/
+// DebFile::GetInstalledVer - Find out the installed version of a pkg	/*{{{*/
+// ---------------------------------------------------------------------
+/* */
+string DebFile::GetInstalledVer(const string &package)
+{
+	pkgCache::PkgIterator Pkg = Cache->FindPkg(package);
+	if (Pkg.end() == false) 
+	{
+		pkgCache::VerIterator V = Pkg.CurrentVer();
+		if (V.end() == false)
+		{
+			return V.VerStr();
+		}
+	}
+
+	return string();
+}
+									/*}}}*/
+// DebFile::Go - Start extracting a debian package			/*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool DebFile::Go()
+{
+	debDebFile Deb(File);
+
+	return Deb.ExtractTarMember(*this, "control.tar");
+}
+									/*}}}*/
+// DebFile::DoItem examine element in package and mark			/*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool DebFile::DoItem(Item &I, int &Fd)
+{
+	if (strcmp(I.Name, "control") == 0)
+	{
+		delete [] Control;
+		Control = new char[I.Size+3];
+		Control[I.Size] = '\n';
+		Control[I.Size + 1] = '\n';
+		Control[I.Size + 2] = '\0';
+		Which = IsControl;
+		ControlLen = I.Size + 3;
+		// make it call the Process method below. this is so evil
+		Fd = -2;
+	}
+	else if (strcmp(I.Name, "config") == 0)
+	{
+		delete [] Config;
+		Config = new char[I.Size+1];
+		Config[I.Size] = 0;
+		Which = IsConfig;
+		Fd = -2; 
+	} 
+	else if (strcmp(I.Name, "templates") == 0)
+	{
+		delete [] Template;
+		Template = new char[I.Size+1];
+		Template[I.Size] = 0;
+		Which = IsTemplate;
+		Fd = -2;
+	} 
+	else 
+	{
+		// Ignore it
+		Fd = -1;
+	}
+	return true;
+}
+									/*}}}*/
+// DebFile::Process examine element in package and copy			/*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool DebFile::Process(Item &/*I*/, const unsigned char *data,
+		unsigned long long size, unsigned long long pos)
+{
+	switch (Which)
+	{
+	case IsControl:
+		memcpy(Control + pos, data, size);
+		break;
+	case IsConfig:
+		memcpy(Config + pos, data, size);
+		break;
+	case IsTemplate:
+		memcpy(Template + pos, data, size);
+		break;
+	default: /* throw it away */ ;
+	}
+	return true;
+}
+									/*}}}*/
+// DebFile::ParseInfo - Parse control file for dependency info		/*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool DebFile::ParseInfo()
+{
+	if (Control == NULL) return false;
+
+	pkgTagSection Section;
+	if (Section.Scan(Control, ControlLen) == false)
+		return false;
+
+	Package = Section.FindS("Package");
+	Version = GetInstalledVer(Package);
+
+	const char *Start, *Stop;
+	if (Section.Find("Depends", Start, Stop) == true)
+	{
+		while (1)
+		{
+			string P, V;
+			unsigned int Op;
+			Start = debListParser::ParseDepends(Start, Stop, P, V, Op);
+			if (Start == 0) return false;
+			if (P == "debconf")
+			{
+				DepVer = V;
+				DepOp = Op;
+				break;
+			}
+			if (Start == Stop) break;
+		}
+	}
+	
+	if (Section.Find("Pre-Depends", Start, Stop) == true)
+	{
+		while (1)
+		{
+			string P, V;
+			unsigned int Op;
+			Start = debListParser::ParseDepends(Start, Stop, P, V, Op);
+			if (Start == 0) return false;
+			if (P == "debconf")
+			{
+				PreDepVer = V;
+				PreDepOp = Op;
+				break;
+			}
+			if (Start == Stop) break;
+		}
+	}
+	
+	return true;
+}
+									/*}}}*/
+static bool ShowHelp(CommandLine &)					/*{{{*/
+{
+	cout <<
+		_("Usage: apt-extracttemplates file1 [file2 ...]\n"
+		"\n"
+		"apt-extracttemplates is used to extract config and template files\n"
+		"from debian packages. It is used mainly by debconf(1) to prompt for\n"
+		"configuration questions before installation of packages.\n");
+	return true;
+}
+									/*}}}*/
+// WriteFile - write the contents of the passed string to a file	/*{{{*/
+// ---------------------------------------------------------------------
+/* */
+static string WriteFile(const char *package, const char *prefix, const char *data)
+{
+   FileFd f;
+   std::string tplname;
+   strprintf(tplname, "%s.%s", package, prefix);
+   GetTempFile(tplname, false, &f);
+   if (data != nullptr)
+      f.Write(data, strlen(data));
+   return f.Name();
+}
+									/*}}}*/
+// WriteConfig - write out the config data from a debian package file	/*{{{*/
+// ---------------------------------------------------------------------
+/* */
+static void WriteConfig(const DebFile &file)
+{
+	string templatefile = WriteFile(file.Package.c_str(), "template", file.Template);
+	string configscript = WriteFile(file.Package.c_str(), "config", file.Config);
+
+	if (templatefile.empty() == true || configscript.empty() == true)
+		return;
+	cout << file.Package << " " << file.Version << " " 
+	     << templatefile << " " << configscript << endl;
+}
+									/*}}}*/
+// InitCache - initialize the package cache				/*{{{*/
+// ---------------------------------------------------------------------
+/* */
+static bool Go(CommandLine &CmdL)
+{	
+	// Initialize the apt cache
+	MMap *Map = 0;
+	pkgSourceList List;
+	List.ReadMainList();
+	pkgCacheGenerator::MakeStatusCache(List,NULL,&Map,true);
+	if (Map == 0)
+	   return false;
+	DebFile::Cache = new pkgCache(Map);
+	if (_error->PendingError() == true)
+		return false;
+
+	// Find out what version of debconf is currently installed
+	string debconfver = DebFile::GetInstalledVer("debconf");
+	if (debconfver.empty() == true)
+		return _error->Error( _("Cannot get debconf version. Is debconf installed?"));
+
+	auto const tmpdir = _config->Find("APT::ExtractTemplates::TempDir");
+	if (tmpdir.empty() == false)
+	   setenv("TMPDIR", tmpdir.c_str(), 1);
+
+	// Process each package passsed in
+	for (unsigned int I = 0; I != CmdL.FileSize(); I++)
+	{
+		// Will pick up the errors later..
+		DebFile file(CmdL.FileList[I]);
+		if (file.Go() == false)
+		{
+		        _error->Error("Prior errors apply to %s",CmdL.FileList[I]);
+			continue;
+		}
+
+		// Does the package have templates?
+		if (file.Template != 0 && file.ParseInfo() == true)
+		{
+			// Check to make sure debconf dependencies are
+			// satisfied
+			// cout << "Check " << file.DepVer << ',' << debconfver << endl;
+			if (file.DepVer != "" &&
+			    DebFile::Cache->VS->CheckDep(debconfver.c_str(),
+					file.DepOp,file.DepVer.c_str()
+							 ) == false)
+				continue;
+			if (file.PreDepVer != "" &&
+			    DebFile::Cache->VS->CheckDep(debconfver.c_str(),
+			                file.PreDepOp,file.PreDepVer.c_str()
+							 ) == false) 
+				continue;
+
+			WriteConfig(file);
+		}
+	}
+	
+
+	delete Map;
+	delete DebFile::Cache;
+	
+	return !_error->PendingError();
+}
+									/*}}}*/
+static std::vector<aptDispatchWithHelp> GetCommands()			/*{{{*/
+{
+   return {
+	{nullptr, nullptr, nullptr}
+   };
+}
+									/*}}}*/
+int main(int argc, const char **argv)					/*{{{*/
+{
+	CommandLine CmdL;
+	auto const Cmds = ParseCommandLine(CmdL, APT_CMD::APT_EXTRACTTEMPLATES, &_config, &_system, argc, argv, &ShowHelp, &GetCommands);
+
+	Go(CmdL);
+
+	return DispatchCommandLine(CmdL, {});
+}
+									/*}}}*/