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@@ -1,12 +1,18 @@
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-#include <stdio.h>
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-#include <string.h>
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-#include <stdlib.h>
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-#include <unistd.h>
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-#define _GNU_SOURCE
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-#include <getopt.h>
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-#include <wait.h>
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-#include <fstream.h>
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+// -*- mode: cpp; mode: fold -*-
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+// Description /*{{{*/
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+// $Id: apt-extracttemplates.cc,v 1.2 2001/02/25 04:53:59 tausq Exp $
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+/* ######################################################################
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+
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+ APT Extract Templates - Program to extract debconf config and template
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+ files
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+ This is a simple program to extract config and template information
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+ from Debian packages. It can be used to speed up the preconfiguration
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+ process for debconf-enabled packages
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+
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+ ##################################################################### */
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+ /*}}}*/
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+// Include Files /*{{{*/
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#include <apt-pkg/init.h>
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#if APT_PKG_MAJOR >= 3
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#define APT_COMPATIBILITY 986
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@@ -18,65 +24,274 @@
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#include <apt-pkg/sourcelist.h>
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#include <apt-pkg/pkgcachegen.h>
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#include <apt-pkg/version.h>
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-#include "debfile.h"
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+#include <apt-pkg/tagfile.h>
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+#include <apt-pkg/extracttar.h>
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+#include <apt-pkg/arfile.h>
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+#include <apt-pkg/deblistparser.h>
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+#include <apt-pkg/error.h>
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+#include <apt-pkg/strutl.h>
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-#define TMPDIR "/var/lib/debconf/"
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-#define STR(x) (x ? x : "")
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-//#define TMPDIR "tmp/"
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+#include <stdio.h>
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+#include <string.h>
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+#include <stdlib.h>
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+#include <unistd.h>
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+#define _GNU_SOURCE
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+#include <getopt.h>
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+#include <wait.h>
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+#include <fstream.h>
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+
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+#include <config.h>
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+#include <apti18n.h>
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+#include "apt-extracttemplates.h"
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+
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+#define TMPDIR "/var/lib/debconf/"
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-void help(void)
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+pkgCache *DebFile::Cache = 0;
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+
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+// DebFile::DebFile - Construct the DebFile object /*{{{*/
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+// ---------------------------------------------------------------------
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+/* */
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+DebFile::DebFile(const char *debfile)
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+ : File(debfile, FileFd::ReadOnly), Control(0), DepOp(0), PreDepOp(0),
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+ Config(0), Template(0), Which(None)
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{
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- fprintf(stderr, "apt-extracttemplates deb [deb]\n");
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- exit(0);
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}
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+ /*}}}*/
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+// DebFile::~DebFile - Destruct the DebFile object /*{{{*/
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+// ---------------------------------------------------------------------
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+/* */
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+DebFile::~DebFile()
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+{
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+ delete [] Control;
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+ delete [] Config;
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+ delete [] Template;
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+}
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+ /*}}}*/
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+// DebFile::GetInstalledVer - Find out the installed version of a pkg /*{{{*/
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+// ---------------------------------------------------------------------
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+/* */
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+char *DebFile::GetInstalledVer(const string &package)
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+{
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+ char *ver = 0;
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+
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+ pkgCache::PkgIterator Pkg = Cache->FindPkg(package);
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+ if (Pkg.end() == false)
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+ {
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+ pkgCache::VerIterator V = Pkg.CurrentVer();
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+ if (V.end() == false)
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+ {
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+ ver = strdup(V.VerStr());
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+ }
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+ }
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-char *writefile(const char *prefix, const char *data)
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+ return ver;
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+}
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+ /*}}}*/
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+// DebFile::Go - Start extracting a debian package /*{{{*/
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+// ---------------------------------------------------------------------
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+/* */
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+bool DebFile::Go()
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+{
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+ ARArchive AR(File);
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+ const ARArchive::Member *Member = AR.FindMember("control.tar.gz");
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+ if (Member == 0)
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+ {
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+ fprintf(stderr, _("This is not a valid DEB package.\n"));
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+ return false;
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+ }
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+
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+ if (File.Seek(Member->Start) == false)
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+ {
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+ return false;
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+ }
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+
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+ ExtractTar Tar(File, Member->Size);
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+ return Tar.Go(*this);
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+}
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+ /*}}}*/
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+// DebFile::DoItem examine element in package and mark /*{{{*/
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+// ---------------------------------------------------------------------
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+/* */
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+bool DebFile::DoItem(Item &I, int &Fd)
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+{
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+ if (strcmp(I.Name, "control") == 0)
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+ {
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+ delete [] Control;
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+ Control = new char[I.Size+1];
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+ Control[I.Size] = 0;
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+ Which = IsControl;
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+ ControlLen = I.Size;
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+ // make it call the Process method below. this is so evil
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+ Fd = -2;
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+ }
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+ else if (strcmp(I.Name, "config") == 0)
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+ {
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+ delete [] Config;
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+ Config = new char[I.Size+1];
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+ Config[I.Size] = 0;
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+ Which = IsConfig;
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+ Fd = -2;
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+ }
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+ else if (strcmp(I.Name, "templates") == 0)
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+ {
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+ delete [] Template;
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+ Template = new char[I.Size+1];
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+ Template[I.Size] = 0;
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+ Which = IsTemplate;
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+ Fd = -2;
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+ }
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+ else
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+ {
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+ Fd = -1;
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+ }
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+ return true;
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+}
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+ /*}}}*/
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+// DebFile::Process examine element in package and copy /*{{{*/
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+// ---------------------------------------------------------------------
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+/* */
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+bool DebFile::Process(Item &I, const unsigned char *data,
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+ unsigned long size, unsigned long pos)
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+{
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+ switch (Which)
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+ {
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+ case IsControl:
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+ memcpy(Control + pos, data, size);
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+ break;
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+ case IsConfig:
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+ memcpy(Config + pos, data, size);
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+ break;
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+ case IsTemplate:
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+ memcpy(Template + pos, data, size);
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+ break;
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+ default: /* throw it away */ ;
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+ }
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+ return true;
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+}
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+ /*}}}*/
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+// DebFile::ParseInfo - Parse control file for dependency info /*{{{*/
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+// ---------------------------------------------------------------------
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+/* */
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+bool DebFile::ParseInfo()
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+{
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+ if (Control == NULL) return false;
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+ pkgTagSection Section;
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+ Section.Scan(Control, ControlLen);
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+
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+ Package = Section.FindS("Package");
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+ Version = GetInstalledVer(Package);
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+
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+ const char *Start, *Stop;
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+ if (Section.Find("Depends", Start, Stop) == true)
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+ {
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+ while (1)
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+ {
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+ string P, V;
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+ unsigned int Op;
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+ Start = debListParser::ParseDepends(Start, Stop, P, V, Op);
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+ if (Start == 0) return false;
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+ if (P == "debconf")
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+ {
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+ DepVer = V;
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+ DepOp = Op;
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+ break;
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+ }
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+ if (Start == Stop) break;
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+ }
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+ }
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+
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+ if (Section.Find("Pre-Depends", Start, Stop) == true)
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+ {
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+ while (1)
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+ {
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+ string P, V;
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+ unsigned int Op;
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+ Start = debListParser::ParseDepends(Start, Stop, P, V, Op);
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+ if (Start == 0) return false;
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+ if (P == "debconf")
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+ {
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+ PreDepVer = V;
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+ PreDepOp = Op;
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+ break;
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+ }
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+ if (Start == Stop) break;
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+ }
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+ }
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+
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+ return true;
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+}
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+ /*}}}*/
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+// ShowHelp - show a short help text /*{{{*/
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+// ---------------------------------------------------------------------
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+/* */
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+void ShowHelp(void)
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+{
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+ ioprintf(cout,_("%s %s for %s %s compiled on %s %s\n"),PACKAGE,VERSION,
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+ COMMON_OS,COMMON_CPU,__DATE__,__TIME__);
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+
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+ fprintf(stderr,
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+ _("Usage: apt-extracttemplates file1 [file2 ...]\n"
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+ "\n"
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+ "apt-extracttemplates is a tool to extract config and template info\n"
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+ "from debian packages\n"));
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+ exit(0);
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+}
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+ /*}}}*/
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+// WriteFile - write the contents of the passed string to a file /*{{{*/
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+// ---------------------------------------------------------------------
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+/* */
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+char *WriteFile(const char *prefix, const char *data)
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{
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char fn[512];
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static int i;
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snprintf(fn, sizeof(fn), "%s%s.%u%d", TMPDIR, prefix, getpid(), i++);
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- if (data == NULL) data = "";
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-
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ofstream ofs(fn);
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if (!ofs) return NULL;
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- ofs << data;
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+ ofs << (data ? data : "");
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ofs.close();
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return strdup(fn);
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}
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-
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-void writeconfig(const DebFile &file)
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+ /*}}}*/
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+// WriteConfig - write out the config data from a debian package file /*{{{*/
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+// ---------------------------------------------------------------------
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+/* */
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+void WriteConfig(const DebFile &file)
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{
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- char *templatefile = writefile("template", file.Template);
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- char *configscript = writefile("config", file.Config);
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+ char *templatefile = WriteFile("template", file.Template);
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+ char *configscript = WriteFile("config", file.Config);
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if (templatefile == 0 || configscript == 0)
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{
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- fprintf(stderr, "Cannot write config script or templates\n");
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+ fprintf(stderr, _("Cannot write config script or templates\n"));
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return;
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}
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- printf("%s %s %s %s\n",
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- STR(file.Package), // Package
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- STR(file.Version), // Version
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- templatefile, // Template
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- configscript // Config
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- );
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-}
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+ cout << file.Package << " " << file.Version << " "
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+ << templatefile << " " << configscript << endl;
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-void init(MMap *&Map, pkgCache *&Cache)
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+ free(templatefile);
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+ free(configscript);
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+}
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+ /*}}}*/
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+// InitCache - initialize the package cache /*{{{*/
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+// ---------------------------------------------------------------------
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+/* */
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+int InitCache(MMap *&Map, pkgCache *&Cache)
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{
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// Initialize the apt cache
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if (pkgInitConfig(*_config) == false || pkgInitSystem(*_config, _system) == false)
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{
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- fprintf(stderr, "Cannot initialize apt cache\n");
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- return;
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+ _error->DumpErrors();
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+ return -1;
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}
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pkgSourceList List;
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List.ReadMainList();
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OpProgress Prog;
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pkgMakeStatusCache(List,Prog,&Map,true);
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Cache = new pkgCache(Map);
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+ return 0;
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}
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+ /*}}}*/
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int main(int argc, char **argv, char **env)
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{
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@@ -86,51 +301,50 @@ int main(int argc, char **argv, char **env)
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MMap *Map = 0;
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const char *debconfver = NULL;
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- init(Map, DebFile::Cache);
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- if (Map == 0 || DebFile::Cache == 0)
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+ // Initialize the package cache
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+ if (InitCache(Map, DebFile::Cache) < 0 || Map == 0 || DebFile::Cache == 0)
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{
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- fprintf(stderr, "Cannot initialize APT cache\n");
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- return 1;
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+ fprintf(stderr, _("Cannot initialize APT cache\n"));
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+ return 100;
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}
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- debconfver = DebFile::GetInstalledVer("debconf");
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-
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- if (debconfver == NULL)
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+ // Find out what version of debconf is currently installed
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+ if ((debconfver = DebFile::GetInstalledVer("debconf")) == NULL)
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{
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- fprintf(stderr, "Cannot get debconf version. Is debconf installed?\n");
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+ fprintf(stderr, _("Cannot get debconf version. Is debconf installed?\n"));
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return 1;
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}
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+ // Process each package passsed in
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numdebs = argc - 1;
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debs = new char *[numdebs];
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memcpy(debs, &argv[1], sizeof(char *) * numdebs);
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- if (numdebs < 1)
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- {
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- fprintf(stderr, "apt-extracttemplates foo.deb [...]\n");
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- return 0;
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- }
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+ if (numdebs < 1) ShowHelp();
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for (idx = 0; idx < numdebs; idx++)
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{
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DebFile file(debs[idx]);
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if (file.Go() == false)
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{
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- fprintf(stderr, "Cannot read %s\n", debs[idx]);
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+ fprintf(stderr, _("Cannot read %s\n"), debs[idx]);
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continue;
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}
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+ // Does the package have templates?
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if (file.Template != 0 && file.ParseInfo() == true)
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{
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- if (file.DepVer != 0 && *file.DepVer != 0 &&
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- pkgCheckDep(file.DepVer,
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+ // Check to make sure debconf dependencies are
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+ // satisfied
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+ if (file.DepVer != "" &&
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+ pkgCheckDep(file.DepVer.c_str(),
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debconfver, file.DepOp) == false)
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continue;
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- if (file.PreDepVer != 0 && *file.PreDepVer != 0 &&
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- pkgCheckDep(file.PreDepVer,
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+ if (file.PreDepVer != "" &&
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+ pkgCheckDep(file.PreDepVer.c_str(),
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debconfver, file.PreDepOp) == false)
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continue;
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- writeconfig(file);
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+ WriteConfig(file);
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}
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}
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