diff options
Diffstat (limited to 'cmdline/apt-get.cc')
| -rw-r--r-- | cmdline/apt-get.cc | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/cmdline/apt-get.cc b/cmdline/apt-get.cc index 116f4a07e..b645da878 100644 --- a/cmdline/apt-get.cc +++ b/cmdline/apt-get.cc @@ -2787,6 +2787,158 @@ bool DoBuildDep(CommandLine &CmdL) return true; } /*}}}*/ +// GuessThirdPartyChangelogUri - return url /*{{{*/ +// --------------------------------------------------------------------- +bool GuessThirdPartyChangelogUri(CacheFile &Cache, + pkgCache::PkgIterator Pkg, + pkgCache::VerIterator Ver, + string &out_uri) +{ + pkgRecords Recs(Cache); + pkgSourceList *SrcList = Cache.GetSourceList(); + + // get the binary deb server path + pkgRecords::Parser &rec=Recs.Lookup(Ver.FileList()); + string srcpkg = rec.SourcePkg().empty() ? Pkg.Name() : rec.SourcePkg(); + // FIXME: deal with cases like gcc-defaults (srcver != binver) + string srcver = StripEpoch(Ver.VerStr()); + + pkgCache::VerFileIterator Vf = Ver.FileList(); + if (Vf.end() == true) + return false; + pkgCache::PkgFileIterator F = Vf.File(); + pkgIndexFile *index; + if(SrcList->FindIndex(F, index) == false) + return false; + // get archive uri for the binary deb + string deb_uri = index->ArchiveURI(rec.FileName()); + + // now strip away the filename and add srcpkg_srcver.changelog + out_uri = flNotFile(deb_uri); + out_uri += srcpkg + "_" + srcver + ".changelog"; + return true; +} +// DownloadChangelog - Download the changelog /*{{{*/ +// --------------------------------------------------------------------- +bool DownloadChangelog(CacheFile &CacheFile, pkgAcquire &Fetcher, pkgCache::VerIterator V, string targetfile) +{ + string srcpkg; + string prefix; + string descr; + string src_section; + string verstr; + string server; + string path; + + // 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(); + // 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"; + + 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 + 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()); + // queue it + string changelog_uri = server+path; + strprintf(descr, _("Changelog for %s (%s)"), srcpkg.c_str(), changelog_uri.c_str()); + new pkgAcqFile(&Fetcher, uri, "", 0, descr, srcpkg, "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(); + if (!FileExists(targetfile)) + { + string third_party_uri; + if (GuessThirdPartyChangelogUri(CacheFile, Pkg, V, third_party_uri)) + { + strprintf(descr, _("Changelog for %s (%s)"), srcpkg.c_str(), third_party_uri.c_str()); + new pkgAcqFile(&Fetcher, third_party_uri, "", 0, descr, srcpkg, "ignored", targetfile); + res = Fetcher.Run(); + } + } + + if (FileExists(targetfile)) + return true; + + // error + return _error->Error("changelog download failed"); +} + /*}}}*/ +// DisplayFileInPager - Display File with pager /*{{{*/ +void DisplayFileInPager(string filename) +{ + pid_t Process = ExecFork(); + if (Process == 0) + { + const char *Args[3]; + Args[0] = "/usr/bin/sensible-pager"; + Args[1] = filename.c_str(); + Args[2] = 0; + execvp(Args[0],(char **)Args); + exit(100); + } + + // Wait for the subprocess + ExecWait(Process, "sensible-pager", false); +} + /*}}}*/ +// DoChangelog - Get changelog from the command line /*{{{*/ +// --------------------------------------------------------------------- +bool DoChangelog(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; + char *tmpdir = mkdtemp(strdup("/tmp/apt-changelog-XXXXXX")); + if (tmpdir == NULL) { + return _error->Errno("mkdtemp", "mkdtemp failed"); + } + + for (APT::VersionSet::const_iterator Ver = verset.begin(); + Ver != verset.end(); + ++Ver) + { + string changelogfile = string(tmpdir) + "changelog"; + if (DownloadChangelog(Cache, Fetcher, Ver, changelogfile)) + DisplayFileInPager(changelogfile); + // cleanup temp file + unlink(changelogfile.c_str()); + } + // clenaup tmp dir + rmdir(tmpdir); + free(tmpdir); + return true; +} + /*}}}*/ // DoMoo - Never Ask, Never Tell /*{{{*/ // --------------------------------------------------------------------- /* */ @@ -2978,6 +3130,7 @@ int main(int argc,const char *argv[]) /*{{{*/ {"check",&DoCheck}, {"source",&DoSource}, {"download",&DoDownload}, + {"changelog",&DoChangelog}, {"moo",&DoMoo}, {"help",&ShowHelp}, {0,0}}; |