merge with lp:~mvo/apt/apt-sid to get the complete fr

[apt.git] / cmdline / apt-extracttemplates.cc

diff --git a/cmdline/apt-extracttemplates.cc b/cmdline/apt-extracttemplates.cc
index b7af0300586d46491d2afb50e13121b198142701..21ef1a0508d043b19af7d3fc5642922c11fe4070 100644 (file)
--- a/cmdline/apt-extracttemplates.cc
+++ b/cmdline/apt-extracttemplates.cc
@@ -1,142 +1,393 @@
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-#include <unistd.h>
-#define _GNU_SOURCE
-#include <getopt.h>
-#include <wait.h>
-#include <fstream.h>
+// -*- mode: cpp; mode: fold -*-
+// Description                                                         /*{{{*/
+// $Id: apt-extracttemplates.cc,v 1.15 2003/07/26 00:00:11 mdz Exp $
+/* ######################################################################
+   
+   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 <apt-pkg/init.h>
 #include <apt-pkg/init.h>

-#if APT_PKG_MAJOR >= 3
-#define APT_COMPATIBILITY 986
-#include <apt-pkg/debversion.h>
-#endif
+#include <apt-pkg/cmndline.h>

 #include <apt-pkg/pkgcache.h>
 #include <apt-pkg/configuration.h>
 #include <apt-pkg/progress.h>
 #include <apt-pkg/sourcelist.h>
 #include <apt-pkg/pkgcachegen.h>
 #include <apt-pkg/version.h>
 #include <apt-pkg/pkgcache.h>
 #include <apt-pkg/configuration.h>
 #include <apt-pkg/progress.h>
 #include <apt-pkg/sourcelist.h>
 #include <apt-pkg/pkgcachegen.h>
 #include <apt-pkg/version.h>

-#include "debfile.h"
+#include <apt-pkg/tagfile.h>
+#include <apt-pkg/extracttar.h>
+#include <apt-pkg/arfile.h>
+#include <apt-pkg/deblistparser.h>
+#include <apt-pkg/error.h>
+#include <apt-pkg/strutl.h>
+#include <apt-pkg/fileutl.h>

        
        

-#define TMPDIR "/var/lib/debconf/"
-#define STR(x) (x ? x : "")
-//#define TMPDIR "tmp/"
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fstream>

 
 

-void help(void)
-{
-       fprintf(stderr, "apt-extracttemplates deb [deb]\n");
-       exit(0);
-}
+#include <locale.h>
+#include <config.h>
+#include <apti18n.h>
+#include "apt-extracttemplates.h"
+                                                                       /*}}}*/

 
 

-char *writefile(const char *prefix, const char *data)
-{
-       char fn[512];
-       static int i;
-       snprintf(fn, sizeof(fn), "%s%s.%u%d", TMPDIR, prefix, getpid(), i++);
+using namespace std;

 
 

-       if (data == NULL) data = "";
+#define TMPDIR         "/tmp"

 
 

-       ofstream ofs(fn);
-       if (!ofs) return NULL;
-       ofs << data;
-       ofs.close();
-       return strdup(fn);
-}
+pkgCache *DebFile::Cache = 0;

 
 

-void writeconfig(const DebFile &file)
+// DebFile::DebFile - Construct the DebFile object                     /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+DebFile::DebFile(const char *debfile)
+       : File(debfile, FileFd::ReadOnly), Control(0), DepOp(0), 
+          PreDepOp(0), Config(0), Template(0), Which(None)

 {
 {

-       char *templatefile = writefile("template", file.Template);
-       char *configscript = writefile("config", file.Config);
+}
+                                                                       /*}}}*/
+// 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();
+               }
+       }

 
 

-       if (templatefile == 0 || configscript == 0)
+       return string();
+}
+                                                                       /*}}}*/
+// DebFile::Go - Start extracting a debian package                     /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool DebFile::Go()
+{
+       ARArchive AR(File);
+       if (_error->PendingError() == true)
+               return false;
+               
+       const ARArchive::Member *Member = AR.FindMember("control.tar.gz");
+       if (Member == 0)
+               return _error->Error(_("%s not a valid DEB package."),File.Name().c_str());
+       
+       if (File.Seek(Member->Start) == false)
+               return false;
+       ExtractTar Tar(File, Member->Size,"gzip");
+       return Tar.Go(*this);
+}
+                                                                       /*}}}*/
+// DebFile::DoItem examine element in package and mark                 /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool DebFile::DoItem(Item &I, int &Fd)
+{
+       if (strcmp(I.Name, "control") == 0)

        {
        {

-               fprintf(stderr, "Cannot write config script or templates\n");
-               return;
+               delete [] Control;
+               Control = new char[I.Size+1];
+               Control[I.Size] = 0;
+               Which = IsControl;
+               ControlLen = I.Size;
+               // make it call the Process method below. this is so evil
+               Fd = -2;

        }
        }

-       printf("%s %s %s %s\n",
-               STR(file.Package),      // Package
-               STR(file.Version),      // Version
-               templatefile,   // Template
-               configscript    // Config
-       );
+       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;

 }
 }

-
-void init(MMap *&Map, pkgCache *&Cache)
+                                                                       /*}}}*/
+// DebFile::Process examine element in package and copy                        /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool DebFile::Process(Item &I, const unsigned char *data, 
+               unsigned long size, unsigned long pos)

 {
 {

-       // Initialize the apt cache
-       if (pkgInitConfig(*_config) == false || pkgInitSystem(*_config, _system) == false)
+       switch (Which)

        {
        {

-               fprintf(stderr, "Cannot initialize apt cache\n");
-               return;
+       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 */ ;

        }
        }

-       pkgSourceList List;
-       List.ReadMainList();
-       OpProgress Prog;
-       pkgMakeStatusCache(List,Prog,&Map,true);
-       Cache = new pkgCache(Map);
+       return true;

 }
 }

-
-int main(int argc, char **argv, char **env)
+                                                                       /*}}}*/
+// DebFile::ParseInfo - Parse control file for dependency info         /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool DebFile::ParseInfo()

 {
 {

-       int idx = 0;
-       char **debs = 0;
-       int numdebs = 0;
-       MMap *Map = 0;
-       const char *debconfver = NULL;
+       if (Control == NULL) return false;
+       
+       pkgTagSection Section;
+       Section.Scan(Control, ControlLen);

 
 

-       init(Map, DebFile::Cache);
-       if (Map == 0 || DebFile::Cache == 0)
+       Package = Section.FindS("Package");
+       Version = GetInstalledVer(Package);
+
+       const char *Start, *Stop;
+       if (Section.Find("Depends", Start, Stop) == true)

        {
        {

-               fprintf(stderr, "Cannot initialize APT cache\n");
-               return 1;
+               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;
+               }

        }
        }

-
-       debconfver = DebFile::GetInstalledVer("debconf");

        
        

-       if (debconfver == NULL) 
+       if (Section.Find("Pre-Depends", Start, Stop) == true)

        {
        {

-               fprintf(stderr, "Cannot get debconf version. Is debconf installed?\n");
-               return 1;
+               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;
+}
+                                                                       /*}}}*/
+// ShowHelp - show a short help text                                   /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+int ShowHelp(void)
+{
+       ioprintf(cout,_("%s %s for %s compiled on %s %s\n"),PACKAGE,VERSION,
+           COMMON_ARCH,__DATE__,__TIME__);
+
+       if (_config->FindB("version") == true) 
+               return 0;
+
+       cout << 
+               _("Usage: apt-extracttemplates file1 [file2 ...]\n"
+               "\n"
+               "apt-extracttemplates is a tool to extract config and template info\n"
+               "from debian packages\n"
+               "\n"
+               "Options:\n"
+               "  -h   This help text\n"
+               "  -t   Set the temp dir\n"
+               "  -c=? Read this configuration file\n"
+               "  -o=? Set an arbitrary configuration option, eg -o dir::cache=/tmp\n");
+       return 0;
+}
+                                                                       /*}}}*/
+// WriteFile - write the contents of the passed string to a file       /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+string WriteFile(const char *package, const char *prefix, const char *data)
+{
+       char fn[512];
+       static int i;
+       const char *tempdir = NULL;
+
+        tempdir = getenv("TMPDIR");
+        if (tempdir == NULL)
+             tempdir = TMPDIR;

 
 

-       numdebs = argc - 1;
-       debs = new char *[numdebs];
-       memcpy(debs, &argv[1], sizeof(char *) * numdebs);
+       snprintf(fn, sizeof(fn), "%s/%s.%s.%u%d",
+                 _config->Find("APT::ExtractTemplates::TempDir", tempdir).c_str(),
+                 package, prefix, getpid(), i++);
+       FileFd f;
+       if (data == NULL)
+               data = "";

 
 

-       if (numdebs < 1) 
+       if (!f.Open(fn, FileFd::WriteTemp, 0600))

        {
        {

-               fprintf(stderr, "apt-extracttemplates foo.deb [...]\n");
-               return 0;
+               _error->Errno("ofstream::ofstream",_("Unable to write to %s"),fn);
+               return string();

        }
 
        }
 

-       for (idx = 0; idx < numdebs; idx++)
+       f.Write(data, strlen(data));
+       f.Close();
+       return fn;
+}
+                                                                       /*}}}*/
+// WriteConfig - write out the config data from a debian package file  /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+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                            /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool Go(CommandLine &CmdL)
+{      
+       // Initialize the apt cache
+       MMap *Map = 0;
+       pkgSourceList List;
+       List.ReadMainList();
+       OpProgress Prog;
+       pkgMakeStatusCache(List,Prog,&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?"));
+
+       // Process each package passsed in
+       for (unsigned int I = 0; I != CmdL.FileSize(); I++)

        {
        {

-               DebFile file(debs[idx]);
-               if (file.Go() == false) 
+               // Will pick up the errors later..
+               DebFile file(CmdL.FileList[I]);
+               if (file.Go() == false)

                {
                {

-                       fprintf(stderr, "Cannot read %s\n", debs[idx]);
+                       _error->Error("Prior errors apply to %s",CmdL.FileList[I]);

                        continue;
                }
                        continue;
                }

+
+               // Does the package have templates?

                if (file.Template != 0 && file.ParseInfo() == true)
                {
                if (file.Template != 0 && file.ParseInfo() == true)
                {

-                       if (file.DepVer != 0 && *file.DepVer != 0 &&
-                           pkgCheckDep(file.DepVer, 
-                                       debconfver, file.DepOp) == false) 
+                       // 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;
                                continue;

-                       if (file.PreDepVer != 0 && *file.PreDepVer != 0 &&
-                           pkgCheckDep(file.PreDepVer, 
-                                       debconfver, file.PreDepOp) == false) 
+                       if (file.PreDepVer != "" &&
+                           DebFile::Cache->VS->CheckDep(debconfver.c_str(),
+                                       file.PreDepOp,file.PreDepVer.c_str()
+                                                        ) == false) 

                                continue;
 
                                continue;
 

-                       writeconfig(file);
+                       WriteConfig(file);

                }
        }
        
 
        delete Map;
        delete DebFile::Cache;
                }
        }
        
 
        delete Map;
        delete DebFile::Cache;

+       
+       return !_error->PendingError();
+}
+                                                                       /*}}}*/
+int main(int argc, const char **argv)                                  /*{{{*/
+{
+       CommandLine::Args Args[] = {
+               {'h',"help","help",0},
+               {'v',"version","version",0},
+               {'t',"tempdir","APT::ExtractTemplates::TempDir",CommandLine::HasArg},
+               {'c',"config-file",0,CommandLine::ConfigFile},
+               {'o',"option",0,CommandLine::ArbItem},
+               {0,0,0,0}};
+
+       // Set up gettext support
+       setlocale(LC_ALL,"");
+       textdomain(PACKAGE);
+
+       // Parse the command line and initialize the package library
+       CommandLine CmdL(Args,_config);
+       if (pkgInitConfig(*_config) == false ||
+           CmdL.Parse(argc,argv) == false ||
+           pkgInitSystem(*_config,_system) == false)
+       {
+               _error->DumpErrors();
+               return 100;
+       }
+       
+       // See if the help should be shown
+       if (_config->FindB("help") == true ||
+           CmdL.FileSize() == 0)
+               return ShowHelp();
+       
+       Go(CmdL);

 
 

+       // Print any errors or warnings found during operation
+       if (_error->empty() == false)
+       {
+               // This goes to stderr..
+               bool Errors = _error->PendingError();
+               _error->DumpErrors();
+               return Errors == true?100:0;
+       }
+       

        return 0;
 }
        return 0;
 }

+                                                                       /*}}}*/