diff options
Diffstat (limited to 'apt-pkg/deb/debsrcrecords.cc')
| -rw-r--r-- | apt-pkg/deb/debsrcrecords.cc | 324 |
1 files changed, 324 insertions, 0 deletions
diff --git a/apt-pkg/deb/debsrcrecords.cc b/apt-pkg/deb/debsrcrecords.cc new file mode 100644 index 0000000..9656fca --- /dev/null +++ b/apt-pkg/deb/debsrcrecords.cc @@ -0,0 +1,324 @@ +// -*- mode: cpp; mode: fold -*- +// Description /*{{{*/ +/* ###################################################################### + + 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_PUSH + file->MD5Hash = hash; + APT_IGNORE_DEPRECATED_POP + } + // 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(); + +} |