merged from apt-get-changelog

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

diff --git a/cmdline/apt-get.cc b/cmdline/apt-get.cc
index 53def383de0071279dfd4f18e23bac2e5cb75f8c..eb3ac425b052d01120b30a8a6823fca64c1392c6 100644 (file)
--- a/cmdline/apt-get.cc
+++ b/cmdline/apt-get.cc
@@ -2165,6 +2165,60 @@ bool DoAutoClean(CommandLine &CmdL)
       Cleaner.Go(_config->FindDir("Dir::Cache::archives") + "partial/",*Cache);
 }
                                                                        /*}}}*/
       Cleaner.Go(_config->FindDir("Dir::Cache::archives") + "partial/",*Cache);
 }
                                                                        /*}}}*/

+// DoDownload - download a binary                                      /*{{{*/
+// ---------------------------------------------------------------------
+bool DoDownload(CommandLine &CmdL)
+{
+   CacheFile Cache;
+   if (Cache.ReadOnlyOpen() == false)
+      return false;
+   
+   APT::CacheSetHelper helper(c0out);
+   APT::VersionSet verset = APT::VersionSet::FromCommandLine(Cache,
+               CmdL.FileList + 1, APT::VersionSet::CANDIDATE, helper);
+   pkgAcquire Fetcher;
+   AcqTextStatus Stat(ScreenWidth, _config->FindI("quiet",0));
+   Fetcher.Setup(&Stat);
+
+   if (verset.empty() == true)
+      return false;
+
+   bool result = true;
+   pkgRecords Recs(Cache);
+   pkgSourceList *SrcList = Cache.GetSourceList();
+   for (APT::VersionSet::const_iterator Ver = verset.begin(); 
+        Ver != verset.end(); 
+        ++Ver) 
+   {
+      string descr;
+      // get the right version
+      pkgCache::PkgIterator Pkg = Ver.ParentPkg();
+      pkgRecords::Parser &rec=Recs.Lookup(Ver.FileList());
+      pkgCache::VerFileIterator Vf = Ver.FileList();
+      if (Vf.end() == true)
+         return _error->Error("Can not find VerFile");
+      pkgCache::PkgFileIterator F = Vf.File();
+      pkgIndexFile *index;
+      if(SrcList->FindIndex(F, index) == false)
+         return _error->Error("FindIndex failed");
+      string uri = index->ArchiveURI(rec.FileName());
+      strprintf(descr, _("Downloading %s %s"), Pkg.Name(), Ver.VerStr());
+      // get the most appropriate hash
+      HashString hash;
+      if (rec.SHA256Hash() != "")
+         hash = HashString("sha256", rec.SHA256Hash());
+      else if (rec.SHA1Hash() != "")
+         hash = HashString("sha1", rec.SHA1Hash());
+      else if (rec.MD5Hash() != "")
+         hash = HashString("md5", rec.MD5Hash());
+      // get the file
+      new pkgAcqFile(&Fetcher, uri, hash.toStr(), (*Ver)->Size, descr, Pkg.Name(), ".");
+      result &= (Fetcher.Run() == pkgAcquire::Continue);
+   }
+
+   return result;
+}
+                                                                       /*}}}*/

 // DoCheck - Perform the check operation                               /*{{{*/
 // ---------------------------------------------------------------------
 /* Opening automatically checks the system, this command is mostly used
 // DoCheck - Perform the check operation                               /*{{{*/
 // ---------------------------------------------------------------------
 /* Opening automatically checks the system, this command is mostly used


@@ -2733,49 +2787,105 @@ bool DoBuildDep(CommandLine &CmdL)
    return true;
 }
                                                                        /*}}}*/
    return true;
 }
                                                                        /*}}}*/

+// GetChangelogPath - return a path pointing to a changelog file or dir /*{{{*/
+// ---------------------------------------------------------------------
+/* This returns a "path" string for the changelog url construction.
+ * Please note that its not complete, it either needs a "/changelog"
+ * appended (for the packages.debian.org/changelogs site) or a
+ * ".changelog" (for third party sites that store the changelog in the
+ * pool/ next to the deb itself)
+ * Example return: "pool/main/a/apt/apt_0.8.8ubuntu3" 
+ */
+string GetChangelogPath(CacheFile &Cache, 
+                        pkgCache::PkgIterator Pkg,
+                        pkgCache::VerIterator Ver)
+{
+   string path;
+
+   pkgRecords Recs(Cache);
+   pkgRecords::Parser &rec=Recs.Lookup(Ver.FileList());
+   string srcpkg = rec.SourcePkg().empty() ? Pkg.Name() : rec.SourcePkg();
+   string ver = Ver.VerStr();
+   // if there is a source version it always wins
+   if (rec.SourceVer() != "")
+      ver = rec.SourceVer();
+   path = flNotFile(rec.FileName());
+   path += srcpkg + "_" + StripEpoch(ver);
+   return path;
+}
+                                                                       /*}}}*/
+// GuessThirdPartyChangelogUri - return url                            /*{{{*/
+// ---------------------------------------------------------------------
+/* Contruct a changelog file path for third party sites that do not use
+ * packages.debian.org/changelogs
+ * This simply uses the ArchiveURI() of the source pkg and looks for
+ * a .changelog file there, Example for "mediabuntu":
+ * apt-get changelog mplayer-doc:
+ *  http://packages.medibuntu.org/pool/non-free/m/mplayer/mplayer_1.0~rc4~try1.dsfg1-1ubuntu1+medibuntu1.changelog
+ */
+bool GuessThirdPartyChangelogUri(CacheFile &Cache, 
+                                 pkgCache::PkgIterator Pkg,
+                                 pkgCache::VerIterator Ver,
+                                 string &out_uri)
+{
+   // get the binary deb server path
+   pkgCache::VerFileIterator Vf = Ver.FileList();
+   if (Vf.end() == true)
+      return false;
+   pkgCache::PkgFileIterator F = Vf.File();
+   pkgIndexFile *index;
+   pkgSourceList *SrcList = Cache.GetSourceList();
+   if(SrcList->FindIndex(F, index) == false)
+      return false;
+
+   // get archive uri for the binary deb
+   string path_without_dot_changelog = GetChangelogPath(Cache, Pkg, Ver);
+   out_uri = index->ArchiveURI(path_without_dot_changelog + ".changelog");
+
+   // now strip away the filename and add srcpkg_srcver.changelog
+   return true;
+}

 // DownloadChangelog - Download the changelog                          /*{{{*/
 // ---------------------------------------------------------------------
 // DownloadChangelog - Download the changelog                          /*{{{*/
 // ---------------------------------------------------------------------

-bool DownloadChangelog(CacheFile &CacheFile, pkgAcquire &Fetcher, pkgCache::VerIterator V, string targetfile)
+bool DownloadChangelog(CacheFile &CacheFile, pkgAcquire &Fetcher, 
+                       pkgCache::VerIterator Ver, string targetfile)
+/* Download a changelog file for the given package version to
+ * targetfile. This will first try the server from Apt::Changelogs::Server
+ * (http://packages.debian.org/changelogs by default) and if that gives
+ * a 404 tries to get it from the archive directly (see 
+ * GuessThirdPartyChangelogUri for details how)
+ */

 {
 {

-   string srcpkg;
-   string prefix;
+   string path;

    string descr;
    string descr;

-   string src_section;
-   string verstr;

    string server;
    string server;

-   string path;
+   string changelog_uri;

 
    // data structures we need
 
    // data structures we need

-   pkgRecords Recs(CacheFile);
-   pkgCache::PkgIterator Pkg = V.ParentPkg();
-   pkgRecords::Parser &rec=Recs.Lookup(V.FileList());
-
-   // build uri
-   srcpkg = rec.SourcePkg().empty() ? Pkg.Name() : rec.SourcePkg();
-   strprintf(descr, _("Changelog for %s"), srcpkg.c_str());
-   // FIXME: we actually need the source section here
-   src_section= Pkg.Section();
-   if(src_section.find('/')!=src_section.npos)
-      src_section=string(src_section, 0, src_section.find('/'));
-   else
-      src_section="main";
+   pkgCache::PkgIterator Pkg = Ver.ParentPkg();

 
 

-   prefix+=srcpkg[0];
-   if(srcpkg.size()>3 && srcpkg[0]=='l' && srcpkg[1]=='i' && srcpkg[2]=='b')
-      prefix=std::string("lib")+srcpkg[3];
-
-   verstr = V.VerStr();
-   if(verstr.find(':')!=verstr.npos)
-      verstr=string(verstr, verstr.find(':')+1);
-
-   // make the server configurable
+   // make the server root configurable

    server = _config->Find("Apt::Changelogs::Server",
    server = _config->Find("Apt::Changelogs::Server",

-                          "http://packages.debian.org/");
-   // ... but not the format string to avoid all possible attacks
-   strprintf(path, "/changelogs/pool/%s/%s/%s/%s_%s/changelog", src_section.c_str(), prefix.c_str(), srcpkg.c_str(), srcpkg.c_str(), verstr.c_str());
-   // get it
-   new pkgAcqFile(&Fetcher, server+path, "", 0, descr, srcpkg, "ignored", targetfile);
+                          "http://packages.debian.org/changelogs");
+   path = GetChangelogPath(CacheFile, Pkg, Ver);
+   strprintf(changelog_uri, "%s/%s/changelog", server.c_str(), path.c_str());
+   strprintf(descr, _("Changelog for %s (%s)"), Pkg.Name(), changelog_uri.c_str());
+   // queue it
+   new pkgAcqFile(&Fetcher, changelog_uri, "", 0, descr, Pkg.Name(), "ignored", targetfile);
+
+   // try downloading it, if that fails, they third-party-changelogs location
+   // FIXME: res is "Continue" even if I get a 404?!?

    int res = Fetcher.Run();
    int res = Fetcher.Run();

+   if (!FileExists(targetfile))
+   {
+      string third_party_uri;
+      if (GuessThirdPartyChangelogUri(CacheFile, Pkg, Ver, third_party_uri))
+      {
+         strprintf(descr, _("Changelog for %s (%s)"), Pkg.Name(), third_party_uri.c_str());
+         new pkgAcqFile(&Fetcher, third_party_uri, "", 0, descr, Pkg.Name(), "ignored", targetfile);
+         res = Fetcher.Run();
+      }
+   }

 
    if (FileExists(targetfile))
       return true;
 
    if (FileExists(targetfile))
       return true;


@@ -2932,6 +3042,8 @@ bool ShowHelp(CommandLine &CmdL)
       "   check - Verify that there are no broken dependencies\n"
       "   markauto - Mark the given packages as automatically installed\n"
       "   unmarkauto - Mark the given packages as manually installed\n"
       "   check - Verify that there are no broken dependencies\n"
       "   markauto - Mark the given packages as automatically installed\n"
       "   unmarkauto - Mark the given packages as manually installed\n"

+      "   changelog - Download and display the changelog for the given package\n"
+      "   download - Download the binary package into the current directory\n"

       "\n"
       "Options:\n"
       "  -h  This help text.\n"
       "\n"
       "Options:\n"
       "  -h  This help text.\n"


@@ -3030,6 +3142,7 @@ int main(int argc,const char *argv[])                                     /*{{{*/
                                    {"autoclean",&DoAutoClean},
                                    {"check",&DoCheck},
                                   {"source",&DoSource},
                                    {"autoclean",&DoAutoClean},
                                    {"check",&DoCheck},
                                   {"source",&DoSource},

+                                   {"download",&DoDownload},

                                    {"changelog",&DoChangelog},
                                   {"moo",&DoMoo},
                                   {"help",&ShowHelp},
                                    {"changelog",&DoChangelog},
                                   {"moo",&DoMoo},
                                   {"help",&ShowHelp},