diff options
Diffstat (limited to 'apt-pkg/edsp.cc')
| -rw-r--r-- | apt-pkg/edsp.cc | 309 |
1 files changed, 309 insertions, 0 deletions
diff --git a/apt-pkg/edsp.cc b/apt-pkg/edsp.cc new file mode 100644 index 000000000..e6dc16536 --- /dev/null +++ b/apt-pkg/edsp.cc @@ -0,0 +1,309 @@ +// -*- mode: cpp; mode: fold -*- +// Description /*{{{*/ +/* ###################################################################### + Set of methods to help writing and reading everything needed for EDSP + ##################################################################### */ + /*}}}*/ +// Include Files /*{{{*/ +#include <apt-pkg/edsp.h> +#include <apt-pkg/error.h> +#include <apt-pkg/configuration.h> +#include <apt-pkg/version.h> +#include <apt-pkg/policy.h> +#include <apt-pkg/tagfile.h> + +#include <apti18n.h> +#include <limits> + +#include <stdio.h> + /*}}}*/ + +// EDSP::WriteScenario - to the given file descriptor /*{{{*/ +bool EDSP::WriteScenario(pkgDepCache &Cache, FILE* output) +{ + // we could use pkgCache::DepType and ::Priority, but these would be lokalized strings… + const char * const PrioMap[] = {0, "important", "required", "standard", + "optional", "extra"}; + const char * const DepMap[] = {"", "Depends", "PreDepends", "Suggests", + "Recommends" , "Conflicts", "Replaces", + "Obsoletes", "Breaks", "Enhances"}; + + for (pkgCache::PkgIterator Pkg = Cache.PkgBegin(); Pkg.end() == false; ++Pkg) + { + for (pkgCache::VerIterator Ver = Pkg.VersionList(); Ver.end() == false; ++Ver) + { + fprintf(output, "Package: %s\n", Pkg.Name()); + fprintf(output, "Architecture: %s\n", Ver.Arch()); + fprintf(output, "Version: %s\n", Ver.VerStr()); + if (Pkg.CurrentVer() == Ver) + fprintf(output, "Installed: yes\n"); + if (Pkg->SelectedState == pkgCache::State::Hold) + fprintf(output, "Hold: yes\n"); + fprintf(output, "APT-ID: %u\n", Ver->ID); + fprintf(output, "Priority: %s\n", PrioMap[Ver->Priority]); + if ((Pkg->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential) + fprintf(output, "Essential: yes\n"); + fprintf(output, "Section: %s\n", Ver.Section()); + if (Ver->MultiArch == pkgCache::Version::Allowed || Ver->MultiArch == pkgCache::Version::AllAllowed) + fprintf(output, "Multi-Arch: allowed\n"); + else if (Ver->MultiArch == pkgCache::Version::Foreign || Ver->MultiArch == pkgCache::Version::AllForeign) + fprintf(output, "Multi-Arch: foreign\n"); + else if (Ver->MultiArch == pkgCache::Version::Same) + fprintf(output, "Multi-Arch: same\n"); + signed short Pin = std::numeric_limits<signed short>::min(); + for (pkgCache::VerFileIterator File = Ver.FileList(); File.end() == false; ++File) { + signed short const p = Cache.GetPolicy().GetPriority(File.File()); + if (Pin < p) + Pin = p; + } + fprintf(output, "APT-Pin: %d\n", Pin); + if (Cache.GetCandidateVer(Pkg) == Ver) + fprintf(output, "APT-Candidate: yes\n"); + if ((Cache[Pkg].Flags & pkgCache::Flag::Auto) == pkgCache::Flag::Auto) + fprintf(output, "APT-Automatic: yes\n"); + std::string dependencies[pkgCache::Dep::Enhances + 1]; + bool orGroup = false; + for (pkgCache::DepIterator Dep = Ver.DependsList(); Dep.end() == false; ++Dep) + { + // Ignore implicit dependencies for multiarch here + if (strcmp(Pkg.Arch(), Dep.TargetPkg().Arch()) != 0) + continue; + if (orGroup == false) + dependencies[Dep->Type].append(", "); + dependencies[Dep->Type].append(Dep.TargetPkg().Name()); + if (Dep->Version != 0) + dependencies[Dep->Type].append(" (").append(pkgCache::CompTypeDeb(Dep->CompareOp)).append(" ").append(Dep.TargetVer()).append(")"); + if ((Dep->CompareOp & pkgCache::Dep::Or) == pkgCache::Dep::Or) + { + dependencies[Dep->Type].append(" | "); + orGroup = true; + } + else + orGroup = false; + } + for (int i = 1; i < pkgCache::Dep::Enhances + 1; ++i) + if (dependencies[i].empty() == false) + fprintf(output, "%s: %s\n", DepMap[i], dependencies[i].c_str()+2); + string provides; + for (pkgCache::PrvIterator Prv = Ver.ProvidesList(); Prv.end() == false; ++Prv) + { + // Ignore implicit provides for multiarch here + if (strcmp(Pkg.Arch(), Prv.ParentPkg().Arch()) != 0 || strcmp(Pkg.Name(),Prv.Name()) == 0) + continue; + provides.append(", ").append(Prv.Name()); + } + if (provides.empty() == false) + fprintf(output, "Provides: %s\n", provides.c_str()+2); + + + fprintf(output, "\n"); + } + } + return true; +} + /*}}}*/ +// EDSP::WriteRequest - to the given file descriptor /*{{{*/ +bool EDSP::WriteRequest(pkgDepCache &Cache, FILE* output, bool const Upgrade, + bool const DistUpgrade, bool const AutoRemove) +{ + string del, inst; + for (pkgCache::PkgIterator Pkg = Cache.PkgBegin(); Pkg.end() == false; ++Pkg) + { + string* req; + if (Cache[Pkg].Delete() == true) + req = &del; + else if (Cache[Pkg].NewInstall() == true || Cache[Pkg].Upgrade() == true) + req = &inst; + else + continue; + req->append(" ").append(Pkg.FullName()); + } + fprintf(output, "Request: EDSP 0.2\n"); + if (del.empty() == false) + fprintf(output, "Remove: %s\n", del.c_str()+1); + if (inst.empty() == false) + fprintf(output, "Install: %s\n", inst.c_str()+1); + if (Upgrade == true) + fprintf(output, "Upgrade: yes\n"); + if (DistUpgrade == true) + fprintf(output, "Dist-Upgrade: yes\n"); + if (AutoRemove == true) + fprintf(output, "Autoremove: yes\n"); + if (_config->FindB("APT::Solver::Strict-Pinning", true) == false) + fprintf(output, "Strict-Pinning: no\n"); + string solverpref("APT::Solver::"); + solverpref.append(_config->Find("APT::Solver::Name", "internal")).append("::Preferences"); + if (_config->Exists(solverpref) == true) + fprintf(output, "Preferences: %s\n", _config->Find(solverpref,"").c_str()); + fprintf(output, "\n"); + + return true; +} + /*}}}*/ +// EDSP::ReadResponse - from the given file descriptor /*{{{*/ +bool EDSP::ReadResponse(int const input, pkgDepCache &Cache) { + FileFd in; + in.OpenDescriptor(input, FileFd::ReadOnly); + pkgTagFile response(&in); + pkgTagSection section; + while (response.Step(section) == true) { + std::string type; + if (section.Exists("Install") == true) + type = "Install"; + else if (section.Exists("Remove") == true) + type = "Remove"; + //FIXME: handle progress + else + continue; + + int const id = section.FindI(type.c_str(), -1); + if (id == -1) + return _error->Error("Unable to parse %s request!", type.c_str()); + + //FIXME: find version by id and mark it correctly + } + return true; +} + /*}}}*/ +// EDSP::ReadLine - first line from the given file descriptor /*{{{*/ +// --------------------------------------------------------------------- +/* Little helper method to read a complete line into a string. Similar to + fgets but we need to use the low-level read() here as otherwise the + listparser will be confused later on as mixing of fgets and read isn't + a supported action according to the manpages and results are undefined */ +bool EDSP::ReadLine(int const input, std::string &line) { + char one; + ssize_t data = 0; + line.erase(); + line.reserve(100); + while ((data = read(input, &one, sizeof(one))) != -1) { + if (data != 1) + continue; + if (one == '\n') + return true; + if (one == '\r') + continue; + if (line.empty() == true && isblank(one) != 0) + continue; + line += one; + } + return false; +} + /*}}}*/ +// EDSP::StringToBool - convert yes/no to bool /*{{{*/ +// --------------------------------------------------------------------- +/* we are not as lazy as we are in the global StringToBool as we really + only accept yes/no here - but we will ignore leading spaces */ +bool EDSP::StringToBool(char const *answer, bool const defValue) { + for (; isspace(*answer) != 0; ++answer); + if (strncasecmp(answer, "yes", 3) == 0) + return true; + else if (strncasecmp(answer, "no", 2) == 0) + return false; + else + _error->Warning("Value '%s' is not a boolean 'yes' or 'no'!", answer); + return defValue; +} + /*}}}*/ +// EDSP::ReadRequest - first stanza from the given file descriptor /*{{{*/ +bool EDSP::ReadRequest(int const input, std::list<std::string> &install, + std::list<std::string> &remove, bool &upgrade, + bool &distUpgrade, bool &autoRemove) +{ + install.clear(); + remove.clear(); + upgrade = false; + distUpgrade = false; + autoRemove = false; + std::string line; + while (ReadLine(input, line) == true) + { + // Skip empty lines before request + if (line.empty() == true) + continue; + // The first Tag must be a request, so search for it + if (line.compare(0, 8, "Request:") != 0) + continue; + + while (ReadLine(input, line) == true) + { + // empty lines are the end of the request + if (line.empty() == true) + return true; + + std::list<std::string> *request = NULL; + if (line.compare(0, 8, "Install:") == 0) + { + line.erase(0, 8); + request = &install; + } + else if (line.compare(0, 7, "Remove:") == 0) + { + line.erase(0, 7); + request = &remove; + } + else if (line.compare(0, 8, "Upgrade:") == 0) + upgrade = EDSP::StringToBool(line.c_str() + 9, false); + else if (line.compare(0, 13, "Dist-Upgrade:") == 0) + distUpgrade = EDSP::StringToBool(line.c_str() + 14, false); + else if (line.compare(0, 11, "Autoremove:") == 0) + autoRemove = EDSP::StringToBool(line.c_str() + 12, false); + else + _error->Warning("Unknown line in EDSP Request stanza: %s", line.c_str()); + + if (request == NULL) + continue; + size_t end = line.length(); + do { + size_t begin = line.rfind(' '); + if (begin == std::string::npos) + { + request->push_back(line.substr(0, end)); + break; + } + else if (begin < end) + request->push_back(line.substr(begin + 1, end)); + line.erase(begin); + end = line.find_last_not_of(' '); + } while (end != std::string::npos); + } + } + return false; +} + /*}}}*/ +// EDSP::ApplyRequest - first stanza from the given file descriptor /*{{{*/ +bool EDSP::ApplyRequest(std::list<std::string> const &install, + std::list<std::string> const &remove, + pkgDepCache &Cache) +{ + for (std::list<std::string>::const_iterator i = install.begin(); + i != install.end(); ++i) + Cache.MarkInstall(Cache.FindPkg(*i), false); + + for (std::list<std::string>::const_iterator i = remove.begin(); + i != remove.end(); ++i) + Cache.MarkDelete(Cache.FindPkg(*i)); + return true; +} + /*}}}*/ +// EDSP::WriteSolution - to the given file descriptor /*{{{*/ +bool EDSP::WriteSolution(pkgDepCache &Cache, FILE* output) +{ + bool const Debug = _config->FindB("Debug::EDSP::WriteSolution", false); + for (pkgCache::PkgIterator Pkg = Cache.PkgBegin(); Pkg.end() == false; ++Pkg) + { + if (Cache[Pkg].Delete() == true) + fprintf(output, "Remove: %d\n", Cache.GetCandidateVer(Pkg)->ID); + else if (Cache[Pkg].NewInstall() == true || Cache[Pkg].Upgrade() == true) + fprintf(output, "Install: %d\n", Cache.GetCandidateVer(Pkg)->ID); + else + continue; + if (Debug == true) + fprintf(output, "Package: %s\nVersion: %s\n", Pkg.FullName().c_str(), Cache.GetCandidateVer(Pkg).VerStr()); + fprintf(output, "\n"); + } + + return true; +} + /*}}}*/ +bool EDSP::WriteError(std::string const &message, FILE* output) { return false; } |