// -*- mode: cpp; mode: fold -*- // Description /*{{{*/ // $Id: debsrcrecords.cc,v 1.6 2004/03/17 05:58:54 mdz Exp $ /* ###################################################################### Debian Source Package Records - Parser implementation for Debian style source indexes ##################################################################### */ /*}}}*/ // Include Files /*{{{*/ #include <config.h> #include <apt-pkg/aptconfiguration.h> #include <apt-pkg/deblistparser.h> #include <apt-pkg/debsrcrecords.h> #include <apt-pkg/error.h> #include <apt-pkg/gpgv.h> #include <apt-pkg/hashes.h> #include <apt-pkg/srcrecords.h> #include <apt-pkg/strutl.h> #include <apt-pkg/tagfile-keys.h> #include <apt-pkg/tagfile.h> #include <algorithm> #include <string> #include <vector> #include <ctype.h> #include <stdlib.h> #include <string.h> /*}}}*/ using std::max; using std::string; debSrcRecordParser::debSrcRecordParser(std::string const &File,pkgIndexFile const *Index) : Parser(Index), d(NULL), Tags(&Fd), iOffset(0), Buffer(NULL) { if (File.empty() == false) { if (Fd.Open(File, FileFd::ReadOnly, FileFd::Extension)) Tags.Init(&Fd, 102400); } } std::string debSrcRecordParser::Package() const /*{{{*/ { auto const name = Sect.Find(pkgTagSection::Key::Package); if (iIndex != nullptr || name.empty() == false) return name.to_string(); return Sect.Find(pkgTagSection::Key::Source).to_string(); } /*}}}*/ // SrcRecordParser::Binaries - Return the binaries field /*{{{*/ // --------------------------------------------------------------------- /* This member parses the binaries field into a pair of class arrays and returns a list of strings representing all of the components of the binaries field. The returned array need not be freed and will be reused by the next Binaries function call. This function is commonly used during scanning to find the right package */ const char **debSrcRecordParser::Binaries() { const char *Start, *End; if (Sect.Find(pkgTagSection::Key::Binary, Start, End) == false) return NULL; for (; isspace_ascii(*Start) != 0; ++Start); if (Start >= End) return NULL; StaticBinList.clear(); free(Buffer); Buffer = strndup(Start, End - Start); char* bin = Buffer; do { char* binStartNext = strchrnul(bin, ','); // Found a comma, clean up any space before it if (binStartNext > Buffer) { char* binEnd = binStartNext - 1; for (; binEnd > Buffer && isspace_ascii(*binEnd) != 0; --binEnd) *binEnd = 0; } StaticBinList.push_back(bin); if (*binStartNext != ',') break; *binStartNext = '\0'; for (bin = binStartNext + 1; isspace_ascii(*bin) != 0; ++bin) ; } while (*bin != '\0'); StaticBinList.push_back(NULL); return &StaticBinList[0]; } /*}}}*/ // SrcRecordParser::BuildDepends - Return the Build-Depends information /*{{{*/ // --------------------------------------------------------------------- /* This member parses the build-depends information and returns a list of package/version records representing the build dependency. The returned array need not be freed and will be reused by the next call to this function */ bool debSrcRecordParser::BuildDepends(std::vector<pkgSrcRecords::Parser::BuildDepRec> &BuildDeps, bool const &ArchOnly, bool const &StripMultiArch) { BuildDeps.clear(); pkgTagSection::Key const fields[] = { pkgTagSection::Key::Build_Depends, pkgTagSection::Key::Build_Depends_Indep, pkgTagSection::Key::Build_Conflicts, pkgTagSection::Key::Build_Conflicts_Indep, pkgTagSection::Key::Build_Depends_Arch, pkgTagSection::Key::Build_Conflicts_Arch, }; for (unsigned short I = 0; I < sizeof(fields) / sizeof(fields[0]); ++I) { if (ArchOnly && (fields[I] == pkgTagSection::Key::Build_Depends_Indep || fields[I] == pkgTagSection::Key::Build_Conflicts_Indep)) continue; const char *Start, *Stop; if (Sect.Find(fields[I], Start, Stop) == false) continue; if (Start == Stop) continue; while (1) { BuildDepRec rec; Start = debListParser::ParseDepends(Start, Stop, rec.Package, rec.Version, rec.Op, true, StripMultiArch, true); if (Start == 0) return _error->Error("Problem parsing dependency: %s", BuildDepType(I)); rec.Type = I; // We parsed a package that was ignored (wrong architecture restriction // or something). if (rec.Package.empty()) { // If we are in an OR group, we need to set the "Or" flag of the // previous entry to our value. if (BuildDeps.empty() == false && (BuildDeps[BuildDeps.size() - 1].Op & pkgCache::Dep::Or) == pkgCache::Dep::Or) { BuildDeps[BuildDeps.size() - 1].Op &= ~pkgCache::Dep::Or; BuildDeps[BuildDeps.size() - 1].Op |= (rec.Op & pkgCache::Dep::Or); } } else { BuildDeps.emplace_back(std::move(rec)); } if (Start == Stop) break; } } return true; } /*}}}*/ // SrcRecordParser::Files - Return a list of files for this source /*{{{*/ // --------------------------------------------------------------------- /* This parses the list of files and returns it, each file is required to have a complete source package */ bool debSrcRecordParser::Files(std::vector<pkgSrcRecords::File> &F) { std::vector<pkgSrcRecords::File2> F2; if (Files2(F2) == false) return false; for (std::vector<pkgSrcRecords::File2>::const_iterator f2 = F2.begin(); f2 != F2.end(); ++f2) { pkgSrcRecords::File2 f; #if __GNUC__ >= 4 #pragma GCC diagnostic push #pragma GCC diagnostic ignored "-Wdeprecated-declarations" #endif f.MD5Hash = f2->MD5Hash; f.Size = f2->Size; #if __GNUC__ >= 4 #pragma GCC diagnostic pop #endif f.Path = f2->Path; f.Type = f2->Type; F.push_back(f); } return true; } bool debSrcRecordParser::Files2(std::vector<pkgSrcRecords::File2> &List) { List.clear(); // Stash the / terminated directory prefix std::string Base = Sect.Find(pkgTagSection::Key::Directory).to_string(); if (Base.empty() == false && Base[Base.length()-1] != '/') Base += '/'; std::vector<std::string> const compExts = APT::Configuration::getCompressorExtensions(); for (char const * const * type = HashString::SupportedHashes(); *type != NULL; ++type) { // derive field from checksum type std::string checksumField("Checksums-"); if (strcmp(*type, "MD5Sum") == 0) checksumField = "Files"; // historic name for MD5 checksums else checksumField.append(*type); string const Files = Sect.FindS(checksumField.c_str()); if (Files.empty() == true) continue; // Iterate over the entire list grabbing each triplet const char *C = Files.c_str(); while (*C != 0) { string hash, size, path; // Parse each of the elements if (ParseQuoteWord(C, hash) == false || ParseQuoteWord(C, size) == false || ParseQuoteWord(C, path) == false) return _error->Error("Error parsing file record in %s of source package %s", checksumField.c_str(), Package().c_str()); if (iIndex == nullptr && checksumField == "Files") { // the Files field has a different format than the rest in deb-changes files std::string ignore; if (ParseQuoteWord(C, ignore) == false || ParseQuoteWord(C, path) == false) return _error->Error("Error parsing file record in %s of source package %s", checksumField.c_str(), Package().c_str()); } HashString const hashString(*type, hash); if (Base.empty() == false) path = Base + path; // look if we have a record for this file already std::vector<pkgSrcRecords::File2>::iterator file = List.begin(); for (; file != List.end(); ++file) if (file->Path == path) break; // we have it already, store the new hash and be done if (file != List.end()) { if (checksumField == "Files") APT_IGNORE_DEPRECATED(file->MD5Hash = hash;) // an error here indicates that we have two different hashes for the same file if (file->Hashes.push_back(hashString) == false) return _error->Error("Error parsing checksum in %s of source package %s", checksumField.c_str(), Package().c_str()); continue; } // we haven't seen this file yet pkgSrcRecords::File2 F; F.Path = path; F.FileSize = strtoull(size.c_str(), NULL, 10); F.Hashes.push_back(hashString); F.Hashes.FileSize(F.FileSize); APT_IGNORE_DEPRECATED_PUSH F.Size = F.FileSize; if (checksumField == "Files") F.MD5Hash = hash; APT_IGNORE_DEPRECATED_POP // Try to guess what sort of file it is we are getting. string::size_type Pos = F.Path.length()-1; while (1) { string::size_type Tmp = F.Path.rfind('.',Pos); if (Tmp == string::npos) break; if (F.Type == "tar") { // source v3 has extension 'debian.tar.*' instead of 'diff.*' if (string(F.Path, Tmp+1, Pos-Tmp) == "debian") F.Type = "diff"; break; } F.Type = string(F.Path,Tmp+1,Pos-Tmp); if (std::find(compExts.begin(), compExts.end(), std::string(".").append(F.Type)) != compExts.end() || F.Type == "tar") { Pos = Tmp-1; continue; } break; } List.push_back(F); } } return true; } /*}}}*/ // SrcRecordParser::~SrcRecordParser - Destructor /*{{{*/ // --------------------------------------------------------------------- /* */ debSrcRecordParser::~debSrcRecordParser() { // was allocated via strndup() free(Buffer); } /*}}}*/ debDscRecordParser::debDscRecordParser(std::string const &DscFile, pkgIndexFile const *Index) : debSrcRecordParser("", Index) { // support clear signed files if (OpenMaybeClearSignedFile(DscFile, Fd) == false) { _error->Error("Failed to open %s", DscFile.c_str()); return; } // re-init to ensure the updated Fd is used Tags.Init(&Fd, pkgTagFile::SUPPORT_COMMENTS); // read the first (and only) record Step(); }