X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/f55a958ff2251f0061ab907157c99a350e56025f..e5fefea6ec93746376bf42733ee84a9fafeab764:/apt-pkg/deb/deblistparser.cc diff --git a/apt-pkg/deb/deblistparser.cc b/apt-pkg/deb/deblistparser.cc index 28298aa36..192a281db 100644 --- a/apt-pkg/deb/deblistparser.cc +++ b/apt-pkg/deb/deblistparser.cc @@ -1,6 +1,6 @@ // -*- mode: cpp; mode: fold -*- // Description /*{{{*/ -// $Id: deblistparser.cc,v 1.1 1998/07/04 05:58:08 jgg Exp $ +// $Id: deblistparser.cc,v 1.29.2.5 2004/01/06 01:43:44 mdz Exp $ /* ###################################################################### Package Cache Generator - Generator for the cache structure. @@ -10,35 +10,58 @@ ##################################################################### */ /*}}}*/ // Include Files /*{{{*/ -#include -#include -#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include /*}}}*/ +using std::string; + +static debListParser::WordList PrioList[] = { + {"required",pkgCache::State::Required}, + {"important",pkgCache::State::Important}, + {"standard",pkgCache::State::Standard}, + {"optional",pkgCache::State::Optional}, + {"extra",pkgCache::State::Extra}, + {NULL, 0}}; + // ListParser::debListParser - Constructor /*{{{*/ // --------------------------------------------------------------------- -/* */ -debListParser::debListParser(File &File) : Tags(File) -{ - Step(); -} - /*}}}*/ -// ListParser::FindTag - Find the tag and return a string /*{{{*/ -// --------------------------------------------------------------------- -/* */ -string debListParser::FindTag(const char *Tag) -{ - const char *Start; - const char *Stop; - if (Section.Find(Tag,Start,Stop) == false) - return string(); - return string(Start,Stop - Start); +/* Provide an architecture and only this one and "all" will be accepted + in Step(), if no Architecture is given we will accept every arch + we would accept in general with checkArchitecture() */ +debListParser::debListParser(FileFd *File, string const &Arch) : Tags(File), + Arch(Arch) { + if (Arch == "native") + this->Arch = _config->Find("APT::Architecture"); + Architectures = APT::Configuration::getArchitectures(); + MultiArchEnabled = Architectures.size() > 1; } /*}}}*/ // ListParser::UniqFindTagWrite - Find the tag and write a unq string /*{{{*/ // --------------------------------------------------------------------- /* */ -unsigned long debListParser::UniqFindTagWrite(const char *Tag) +map_stringitem_t debListParser::UniqFindTagWrite(const char *Tag) { const char *Start; const char *Stop; @@ -47,50 +70,30 @@ unsigned long debListParser::UniqFindTagWrite(const char *Tag) return WriteUniqString(Start,Stop - Start); } /*}}}*/ -// ListParser::HandleFlag - Sets a flag variable based on a tag /*{{{*/ -// --------------------------------------------------------------------- -/* This checks the tag for true/false yes/no etc */ -bool debListParser::HandleFlag(const char *Tag,unsigned long &Flags, - unsigned long Flag) -{ - const char *Start; - const char *Stop; - if (Section.Find(Tag,Start,Stop) == false) - return true; - - int Set = 2; - if (strncasecmp(Start,"yes",Stop - Start) == 0) - Set = 1; - if (strncasecmp(Start,"true",Stop - Start) == 0) - Set = 1; - if (strncasecmp(Start,"no",Stop - Start) == 0) - Set = 0; - if (strncasecmp(Start,"false",Stop - Start) == 0) - Set = 0; - if (Set == 2) - { - _error->Warning("Unknown flag value"); - return true; - } - - if (Set == 0) - Flags &= ~Flag; - if (Set == 1) - Flags |= Flag; - return true; -} - /*}}}*/ // ListParser::Package - Return the package name /*{{{*/ // --------------------------------------------------------------------- /* This is to return the name of the package this section describes */ -string debListParser::Package() -{ - string Result = FindTag("Package"); - if (Result.empty() == true) - _error->Error("Encoutered a section with no Package: header"); +string debListParser::Package() { + string const Result = Section.FindS("Package"); + if(unlikely(Result.empty() == true)) + _error->Error("Encountered a section with no Package: header"); return Result; } /*}}}*/ +// ListParser::Architecture - Return the package arch /*{{{*/ +// --------------------------------------------------------------------- +/* This will return the Architecture of the package this section describes */ +string debListParser::Architecture() { + return Section.FindS("Architecture"); +} + /*}}}*/ +// ListParser::ArchitectureAll /*{{{*/ +// --------------------------------------------------------------------- +/* */ +bool debListParser::ArchitectureAll() { + return Section.FindS("Architecture") == "all"; +} + /*}}}*/ // ListParser::Version - Return the version string /*{{{*/ // --------------------------------------------------------------------- /* This is to return the string describing the version in debian form, @@ -98,67 +101,254 @@ string debListParser::Package() entry is assumed to only describe package properties */ string debListParser::Version() { - return FindTag("Version"); + return Section.FindS("Version"); } /*}}}*/ -// ListParser::NewPackage - Fill in the package structure /*{{{*/ -// --------------------------------------------------------------------- -/* This is called when a new package structure is created. It must fill - in the static package information. */ -bool debListParser::NewPackage(pkgCache::PkgIterator Pkg) +unsigned char debListParser::ParseMultiArch(bool const showErrors) /*{{{*/ { - // Debian doesnt have anything, everything is condionally megered - return true; + unsigned char MA; + string const MultiArch = Section.FindS("Multi-Arch"); + if (MultiArch.empty() == true) + MA = pkgCache::Version::None; + else if (MultiArch == "same") { + if (ArchitectureAll() == true) + { + if (showErrors == true) + _error->Warning("Architecture: all package '%s' can't be Multi-Arch: same", + Section.FindS("Package").c_str()); + MA = pkgCache::Version::None; + } + else + MA = pkgCache::Version::Same; + } + else if (MultiArch == "foreign") + MA = pkgCache::Version::Foreign; + else if (MultiArch == "allowed") + MA = pkgCache::Version::Allowed; + else + { + if (showErrors == true) + _error->Warning("Unknown Multi-Arch type '%s' for package '%s'", + MultiArch.c_str(), Section.FindS("Package").c_str()); + MA = pkgCache::Version::None; + } + + if (ArchitectureAll() == true) + MA |= pkgCache::Version::All; + + return MA; } /*}}}*/ // ListParser::NewVersion - Fill in the version structure /*{{{*/ // --------------------------------------------------------------------- /* */ -bool debListParser::NewVersion(pkgCache::VerIterator Ver) -{ +bool debListParser::NewVersion(pkgCache::VerIterator &Ver) +{ + // Parse the section + Ver->Section = UniqFindTagWrite("Section"); + Ver->MultiArch = ParseMultiArch(true); + // Archive Size + Ver->Size = Section.FindULL("Size"); + // Unpacked Size (in K) + Ver->InstalledSize = Section.FindULL("Installed-Size"); + Ver->InstalledSize *= 1024; + + // Priority + const char *Start; + const char *Stop; + if (Section.Find("Priority",Start,Stop) == true) + { + if (GrabWord(string(Start,Stop-Start),PrioList,Ver->Priority) == false) + Ver->Priority = pkgCache::State::Extra; + } + + if (ParseDepends(Ver,"Depends",pkgCache::Dep::Depends) == false) + return false; + if (ParseDepends(Ver,"Pre-Depends",pkgCache::Dep::PreDepends) == false) + return false; + if (ParseDepends(Ver,"Suggests",pkgCache::Dep::Suggests) == false) + return false; + if (ParseDepends(Ver,"Recommends",pkgCache::Dep::Recommends) == false) + return false; + if (ParseDepends(Ver,"Conflicts",pkgCache::Dep::Conflicts) == false) + return false; + if (ParseDepends(Ver,"Breaks",pkgCache::Dep::DpkgBreaks) == false) + return false; + if (ParseDepends(Ver,"Replaces",pkgCache::Dep::Replaces) == false) + return false; + if (ParseDepends(Ver,"Enhances",pkgCache::Dep::Enhances) == false) + return false; + + // Obsolete. + if (ParseDepends(Ver,"Optional",pkgCache::Dep::Suggests) == false) + return false; + + if (ParseProvides(Ver) == false) + return false; + return true; } /*}}}*/ +// ListParser::Description - Return the description string /*{{{*/ +// --------------------------------------------------------------------- +/* This is to return the string describing the package in debian + form. If this returns the blank string then the entry is assumed to + only describe package properties */ +string debListParser::Description(std::string const &lang) +{ + if (lang.empty()) + return Section.FindS("Description"); + else + return Section.FindS(string("Description-").append(lang).c_str()); +} + /*}}}*/ +// ListParser::AvailableDescriptionLanguages /*{{{*/ +std::vector debListParser::AvailableDescriptionLanguages() +{ + std::vector const understood = APT::Configuration::getLanguages(); + std::vector avail; + if (Section.Exists("Description") == true) + avail.push_back(""); + for (std::vector::const_iterator lang = understood.begin(); lang != understood.end(); ++lang) + { + std::string const tagname = "Description-" + *lang; + if (Section.Exists(tagname.c_str()) == true) + avail.push_back(*lang); + } + return avail; +} + /*}}}*/ +// ListParser::Description_md5 - Return the description_md5 MD5SumValue /*{{{*/ +// --------------------------------------------------------------------- +/* This is to return the md5 string to allow the check if it is the right + description. If no Description-md5 is found in the section it will be + calculated. + */ +MD5SumValue debListParser::Description_md5() +{ + string const value = Section.FindS("Description-md5"); + if (value.empty() == true) + { + std::string const desc = Description("") + "\n"; + if (desc == "\n") + return MD5SumValue(); + + MD5Summation md5; + md5.Add(desc.c_str()); + return md5.Result(); + } + else if (likely(value.size() == 32)) + { + if (likely(value.find_first_not_of("0123456789abcdefABCDEF") == string::npos)) + return MD5SumValue(value); + _error->Error("Malformed Description-md5 line; includes invalid character '%s'", value.c_str()); + return MD5SumValue(); + } + _error->Error("Malformed Description-md5 line; doesn't have the required length (32 != %d) '%s'", (int)value.size(), value.c_str()); + return MD5SumValue(); +} + /*}}}*/ // ListParser::UsePackage - Update a package structure /*{{{*/ // --------------------------------------------------------------------- /* This is called to update the package with any new information that might be found in the section */ -bool debListParser::UsePackage(pkgCache::PkgIterator Pkg, - pkgCache::VerIterator Ver) +bool debListParser::UsePackage(pkgCache::PkgIterator &Pkg, + pkgCache::VerIterator &Ver) { - if (Pkg->Section == 0) - if ((Pkg->Section = UniqFindTagWrite("Section")) == 0) + string const static myArch = _config->Find("APT::Architecture"); + // Possible values are: "all", "native", "installed" and "none" + // The "installed" mode is handled by ParseStatus(), See #544481 and friends. + string const static essential = _config->Find("pkgCacheGen::Essential", "all"); + if (essential == "all" || + (essential == "native" && Pkg->Arch != 0 && myArch == Pkg.Arch())) + if (Section.FindFlag("Essential",Pkg->Flags,pkgCache::Flag::Essential) == false) return false; - if (HandleFlag("Essential",Pkg->Flags,pkgCache::Essential) == false) - return false; - if (HandleFlag("Immediate-Configure",Pkg->Flags,pkgCache::ImmediateConf) == false) + if (Section.FindFlag("Important",Pkg->Flags,pkgCache::Flag::Important) == false) return false; + + if (strcmp(Pkg.Name(),"apt") == 0) + { + if ((essential == "native" && Pkg->Arch != 0 && myArch == Pkg.Arch()) || + essential == "all") + Pkg->Flags |= pkgCache::Flag::Essential | pkgCache::Flag::Important; + else + Pkg->Flags |= pkgCache::Flag::Important; + } + if (ParseStatus(Pkg,Ver) == false) return false; return true; } /*}}}*/ -// ListParser::ParseStatus - Parse the status feild /*{{{*/ +// ListParser::VersionHash - Compute a unique hash for this version /*{{{*/ +// --------------------------------------------------------------------- +/* */ +unsigned short debListParser::VersionHash() +{ + const char *Sections[] ={"Installed-Size", + "Depends", + "Pre-Depends", +// "Suggests", +// "Recommends", + "Conflicts", + "Breaks", + "Replaces",0}; + unsigned long Result = INIT_FCS; + char S[1024]; + for (const char * const *I = Sections; *I != 0; ++I) + { + const char *Start; + const char *End; + if (Section.Find(*I,Start,End) == false || End - Start >= (signed)sizeof(S)) + continue; + + /* Strip out any spaces from the text, this undoes dpkgs reformatting + of certain fields. dpkg also has the rather interesting notion of + reformatting depends operators < -> <= */ + char *J = S; + for (; Start != End; ++Start) + { + if (isspace(*Start) != 0) + continue; + *J++ = tolower_ascii(*Start); + + if ((*Start == '<' || *Start == '>') && Start[1] != *Start && Start[1] != '=') + *J++ = '='; + } + + Result = AddCRC16(Result,S,J - S); + } + + return Result; +} + /*}}}*/ +// ListParser::ParseStatus - Parse the status field /*{{{*/ // --------------------------------------------------------------------- /* Status lines are of the form, Status: want flag status want = unknown, install, hold, deinstall, purge flag = ok, reinstreq, hold, hold-reinstreq - status = not-installed, unpacked, half-configured, uninstalled, + status = not-installed, unpacked, half-configured, half-installed, config-files, post-inst-failed, removal-failed, installed Some of the above are obsolete (I think?) flag = hold-* and status = post-inst-failed, removal-failed at least. */ -bool debListParser::ParseStatus(pkgCache::PkgIterator Pkg, - pkgCache::VerIterator Ver) +bool debListParser::ParseStatus(pkgCache::PkgIterator &Pkg, + pkgCache::VerIterator &Ver) { const char *Start; const char *Stop; if (Section.Find("Status",Start,Stop) == false) return true; - + + // UsePackage() is responsible for setting the flag in the default case + bool const static essential = _config->Find("pkgCacheGen::Essential", "") == "installed"; + if (essential == true && + Section.FindFlag("Essential",Pkg->Flags,pkgCache::Flag::Essential) == false) + return false; + // Isolate the first word const char *I = Start; for(; I < Stop && *I != ' '; I++); @@ -166,13 +356,13 @@ bool debListParser::ParseStatus(pkgCache::PkgIterator Pkg, return _error->Error("Malformed Status line"); // Process the want field - WordList WantList[] = {{"unknown",pkgCache::Unknown}, - {"install",pkgCache::Install}, - {"hold",pkgCache::Hold}, - {"deinstall",pkgCache::DeInstall}, - {"purge",pkgCache::Purge}}; - if (GrabWord(string(Start,I-Start),WantList, - _count(WantList),Pkg->SelectedState) == false) + WordList WantList[] = {{"unknown",pkgCache::State::Unknown}, + {"install",pkgCache::State::Install}, + {"hold",pkgCache::State::Hold}, + {"deinstall",pkgCache::State::DeInstall}, + {"purge",pkgCache::State::Purge}, + {NULL, 0}}; + if (GrabWord(string(Start,I-Start),WantList,Pkg->SelectedState) == false) return _error->Error("Malformed 1st word in the Status line"); // Isloate the next word @@ -183,12 +373,12 @@ bool debListParser::ParseStatus(pkgCache::PkgIterator Pkg, return _error->Error("Malformed status line, no 2nd word"); // Process the flag field - WordList FlagList[] = {{"ok",pkgCache::Ok}, - {"reinstreq",pkgCache::ReInstReq}, - {"hold",pkgCache::HoldInst}, - {"hold-reinstreq",pkgCache::HoldReInstReq}}; - if (GrabWord(string(Start,I-Start),FlagList, - _count(FlagList),Pkg->InstState) == false) + WordList FlagList[] = {{"ok",pkgCache::State::Ok}, + {"reinstreq",pkgCache::State::ReInstReq}, + {"hold",pkgCache::State::HoldInst}, + {"hold-reinstreq",pkgCache::State::HoldReInstReq}, + {NULL, 0}}; + if (GrabWord(string(Start,I-Start),FlagList,Pkg->InstState) == false) return _error->Error("Malformed 2nd word in the Status line"); // Isloate the last word @@ -199,25 +389,26 @@ bool debListParser::ParseStatus(pkgCache::PkgIterator Pkg, return _error->Error("Malformed Status line, no 3rd word"); // Process the flag field - WordList StatusList[] = {{"not-installed",pkgCache::NotInstalled}, - {"unpacked",pkgCache::UnPacked}, - {"half-configured",pkgCache::HalfConfigured}, - {"installed",pkgCache::Installed}, - {"uninstalled",pkgCache::UnInstalled}, - {"half-installed",pkgCache::HalfInstalled}, - {"config-files",pkgCache::ConfigFiles}, - {"post-inst-failed",pkgCache::HalfConfigured}, - {"removal-failed",pkgCache::HalfInstalled}}; - if (GrabWord(string(Start,I-Start),StatusList, - _count(StatusList),Pkg->CurrentState) == false) + WordList StatusList[] = {{"not-installed",pkgCache::State::NotInstalled}, + {"unpacked",pkgCache::State::UnPacked}, + {"half-configured",pkgCache::State::HalfConfigured}, + {"installed",pkgCache::State::Installed}, + {"half-installed",pkgCache::State::HalfInstalled}, + {"config-files",pkgCache::State::ConfigFiles}, + {"triggers-awaited",pkgCache::State::TriggersAwaited}, + {"triggers-pending",pkgCache::State::TriggersPending}, + {"post-inst-failed",pkgCache::State::HalfConfigured}, + {"removal-failed",pkgCache::State::HalfInstalled}, + {NULL, 0}}; + if (GrabWord(string(Start,I-Start),StatusList,Pkg->CurrentState) == false) return _error->Error("Malformed 3rd word in the Status line"); /* A Status line marks the package as indicating the current version as well. Only if it is actually installed.. Otherwise the interesting dpkg handling of the status file creates bogus entries. */ - if (!(Pkg->CurrentState == pkgCache::NotInstalled || - Pkg->CurrentState == pkgCache::ConfigFiles)) + if (!(Pkg->CurrentState == pkgCache::State::NotInstalled || + Pkg->CurrentState == pkgCache::State::ConfigFiles)) { if (Ver.end() == true) _error->Warning("Encountered status field in a non-version description"); @@ -225,16 +416,426 @@ bool debListParser::ParseStatus(pkgCache::PkgIterator Pkg, Pkg->CurrentVer = Ver.Index(); } + return true; +} + +const char *debListParser::ConvertRelation(const char *I,unsigned int &Op) +{ + // Determine the operator + switch (*I) + { + case '<': + I++; + if (*I == '=') + { + I++; + Op = pkgCache::Dep::LessEq; + break; + } + + if (*I == '<') + { + I++; + Op = pkgCache::Dep::Less; + break; + } + + // < is the same as <= and << is really Cs < for some reason + Op = pkgCache::Dep::LessEq; + break; + + case '>': + I++; + if (*I == '=') + { + I++; + Op = pkgCache::Dep::GreaterEq; + break; + } + + if (*I == '>') + { + I++; + Op = pkgCache::Dep::Greater; + break; + } + + // > is the same as >= and >> is really Cs > for some reason + Op = pkgCache::Dep::GreaterEq; + break; + + case '=': + Op = pkgCache::Dep::Equals; + I++; + break; + + // HACK around bad package definitions + default: + Op = pkgCache::Dep::Equals; + break; + } + return I; +} + /*}}}*/ +// ListParser::ParseDepends - Parse a dependency element /*{{{*/ +// --------------------------------------------------------------------- +/* This parses the dependency elements out of a standard string in place, + bit by bit. */ +const char *debListParser::ParseDepends(const char *Start,const char *Stop, + std::string &Package,std::string &Ver,unsigned int &Op) + { return ParseDepends(Start, Stop, Package, Ver, Op, false, true, false); } +const char *debListParser::ParseDepends(const char *Start,const char *Stop, + std::string &Package,std::string &Ver,unsigned int &Op, + bool const &ParseArchFlags) + { return ParseDepends(Start, Stop, Package, Ver, Op, ParseArchFlags, true, false); } +const char *debListParser::ParseDepends(const char *Start,const char *Stop, + std::string &Package,std::string &Ver,unsigned int &Op, + bool const &ParseArchFlags, bool const &StripMultiArch) + { return ParseDepends(Start, Stop, Package, Ver, Op, ParseArchFlags, StripMultiArch, false); } +const char *debListParser::ParseDepends(const char *Start,const char *Stop, + string &Package,string &Ver, + unsigned int &Op, bool const &ParseArchFlags, + bool const &StripMultiArch, + bool const &ParseRestrictionsList) +{ + // Strip off leading space + for (;Start != Stop && isspace(*Start) != 0; ++Start); + + // Parse off the package name + const char *I = Start; + for (;I != Stop && isspace(*I) == 0 && *I != '(' && *I != ')' && + *I != ',' && *I != '|' && *I != '[' && *I != ']' && + *I != '<' && *I != '>'; ++I); + + // Malformed, no '(' + if (I != Stop && *I == ')') + return 0; + + if (I == Start) + return 0; + + // Stash the package name + Package.assign(Start,I - Start); + + // We don't want to confuse library users which can't handle MultiArch + string const arch = _config->Find("APT::Architecture"); + if (StripMultiArch == true) { + size_t const found = Package.rfind(':'); + if (found != string::npos && + (strcmp(Package.c_str() + found, ":any") == 0 || + strcmp(Package.c_str() + found, ":native") == 0 || + strcmp(Package.c_str() + found + 1, arch.c_str()) == 0)) + Package = Package.substr(0,found); + } + + // Skip white space to the '(' + for (;I != Stop && isspace(*I) != 0 ; I++); + + // Parse a version + if (I != Stop && *I == '(') + { + // Skip the '(' + for (I++; I != Stop && isspace(*I) != 0 ; I++); + if (I + 3 >= Stop) + return 0; + I = ConvertRelation(I,Op); + + // Skip whitespace + for (;I != Stop && isspace(*I) != 0; I++); + Start = I; + I = (const char*) memchr(I, ')', Stop - I); + if (I == NULL || Start == I) + return 0; + + // Skip trailing whitespace + const char *End = I; + for (; End > Start && isspace(End[-1]); End--); + + Ver.assign(Start,End-Start); + I++; + } + else + { + Ver.clear(); + Op = pkgCache::Dep::NoOp; + } + + // Skip whitespace + for (;I != Stop && isspace(*I) != 0; I++); + + if (ParseArchFlags == true) + { + APT::CacheFilter::PackageArchitectureMatchesSpecification matchesArch(arch, false); + + // Parse an architecture + if (I != Stop && *I == '[') + { + ++I; + // malformed + if (unlikely(I == Stop)) + return 0; + + const char *End = I; + bool Found = false; + bool NegArch = false; + while (I != Stop) + { + // look for whitespace or ending ']' + for (;End != Stop && !isspace(*End) && *End != ']'; ++End); + + if (unlikely(End == Stop)) + return 0; + + if (*I == '!') + { + NegArch = true; + ++I; + } + + std::string arch(I, End); + if (arch.empty() == false && matchesArch(arch.c_str()) == true) + { + Found = true; + if (I[-1] != '!') + NegArch = false; + // we found a match, so fast-forward to the end of the wildcards + for (; End != Stop && *End != ']'; ++End); + } + + if (*End++ == ']') { + I = End; + break; + } + + I = End; + for (;I != Stop && isspace(*I) != 0; I++); + } + + if (NegArch == true) + Found = !Found; + + if (Found == false) + Package = ""; /* not for this arch */ + } + + // Skip whitespace + for (;I != Stop && isspace(*I) != 0; I++); + } + + if (ParseRestrictionsList == true) + { + // Parse a restrictions list + if (I != Stop && *I == '<') + { + ++I; + // malformed + if (unlikely(I == Stop)) + return 0; + + std::vector const profiles = APT::Configuration::getBuildProfiles(); + + const char *End = I; + bool Found = false; + bool NegRestriction = false; + while (I != Stop) + { + // look for whitespace or ending '>' + for (;End != Stop && !isspace(*End) && *End != '>'; ++End); + + if (unlikely(End == Stop)) + return 0; + + if (*I == '!') + { + NegRestriction = true; + ++I; + } + + std::string restriction(I, End); + + std::string prefix = "profile."; + // only support for "profile" prefix, ignore others + if (restriction.size() > prefix.size() && + restriction.substr(0, prefix.size()) == prefix) + { + // get the name of the profile + restriction = restriction.substr(prefix.size()); + + if (restriction.empty() == false && profiles.empty() == false && + std::find(profiles.begin(), profiles.end(), restriction) != profiles.end()) + { + Found = true; + if (I[-1] != '!') + NegRestriction = false; + // we found a match, so fast-forward to the end of the wildcards + for (; End != Stop && *End != '>'; ++End); + } + } + + if (*End++ == '>') { + I = End; + break; + } + + I = End; + for (;I != Stop && isspace(*I) != 0; I++); + } + + if (NegRestriction == true) + Found = !Found; + + if (Found == false) + Package = ""; /* not for this restriction */ + } + + // Skip whitespace + for (;I != Stop && isspace(*I) != 0; I++); + } + + if (I != Stop && *I == '|') + Op |= pkgCache::Dep::Or; + + if (I == Stop || *I == ',' || *I == '|') + { + if (I != Stop) + for (I++; I != Stop && isspace(*I) != 0; I++); + return I; + } + + return 0; +} + /*}}}*/ +// ListParser::ParseDepends - Parse a dependency list /*{{{*/ +// --------------------------------------------------------------------- +/* This is the higher level depends parser. It takes a tag and generates + a complete depends tree for the given version. */ +bool debListParser::ParseDepends(pkgCache::VerIterator &Ver, + const char *Tag,unsigned int Type) +{ + const char *Start; + const char *Stop; + if (Section.Find(Tag,Start,Stop) == false) + return true; + + string const pkgArch = Ver.Arch(); + + while (1) + { + string Package; + string Version; + unsigned int Op; + + Start = ParseDepends(Start, Stop, Package, Version, Op, false, false, false); + if (Start == 0) + return _error->Error("Problem parsing dependency %s",Tag); + size_t const found = Package.rfind(':'); + + // If negative is unspecific it needs to apply on all architectures + if (MultiArchEnabled == true && found == string::npos && + (Type == pkgCache::Dep::Conflicts || + Type == pkgCache::Dep::DpkgBreaks || + Type == pkgCache::Dep::Replaces)) + { + for (std::vector::const_iterator a = Architectures.begin(); + a != Architectures.end(); ++a) + if (NewDepends(Ver,Package,*a,Version,Op,Type) == false) + return false; + if (NewDepends(Ver,Package,"none",Version,Op,Type) == false) + return false; + } + else if (MultiArchEnabled == true && found != string::npos && + strcmp(Package.c_str() + found, ":any") != 0) + { + string Arch = Package.substr(found+1, string::npos); + Package = Package.substr(0, found); + // Such dependencies are not supposed to be accepted … + // … but this is probably the best thing to do. + if (Arch == "native") + Arch = _config->Find("APT::Architecture"); + if (NewDepends(Ver,Package,Arch,Version,Op,Type) == false) + return false; + } + else + { + if (NewDepends(Ver,Package,pkgArch,Version,Op,Type) == false) + return false; + if ((Type == pkgCache::Dep::Conflicts || + Type == pkgCache::Dep::DpkgBreaks || + Type == pkgCache::Dep::Replaces) && + NewDepends(Ver, Package, + (pkgArch != "none") ? "none" : _config->Find("APT::Architecture"), + Version,Op,Type) == false) + return false; + } + if (Start == Stop) + break; + } + return true; +} + /*}}}*/ +// ListParser::ParseProvides - Parse the provides list /*{{{*/ +// --------------------------------------------------------------------- +/* */ +bool debListParser::ParseProvides(pkgCache::VerIterator &Ver) +{ + const char *Start; + const char *Stop; + if (Section.Find("Provides",Start,Stop) == true) + { + string Package; + string Version; + string const Arch = Ver.Arch(); + unsigned int Op; + + while (1) + { + Start = ParseDepends(Start,Stop,Package,Version,Op); + if (Start == 0) + return _error->Error("Problem parsing Provides line"); + if (Op != pkgCache::Dep::NoOp) { + _error->Warning("Ignoring Provides line with DepCompareOp for package %s", Package.c_str()); + } else if ((Ver->MultiArch & pkgCache::Version::Foreign) == pkgCache::Version::Foreign) { + if (NewProvidesAllArch(Ver, Package, Version) == false) + return false; + } else { + if (NewProvides(Ver, Package, Arch, Version) == false) + return false; + } + + if (Start == Stop) + break; + } + } + + if ((Ver->MultiArch & pkgCache::Version::Allowed) == pkgCache::Version::Allowed) + { + string const Package = string(Ver.ParentPkg().Name()).append(":").append("any"); + return NewProvidesAllArch(Ver, Package, Ver.VerStr()); + } + else if ((Ver->MultiArch & pkgCache::Version::Foreign) == pkgCache::Version::Foreign) + return NewProvidesAllArch(Ver, Ver.ParentPkg().Name(), Ver.VerStr()); + + return true; +} + /*}}}*/ +// ListParser::NewProvides - add provides for all architectures /*{{{*/ +bool debListParser::NewProvidesAllArch(pkgCache::VerIterator &Ver, string const &Package, + string const &Version) { + for (std::vector::const_iterator a = Architectures.begin(); + a != Architectures.end(); ++a) + { + if (NewProvides(Ver, Package, *a, Version) == false) + return false; + } return true; } /*}}}*/ // ListParser::GrabWord - Matches a word and returns /*{{{*/ // --------------------------------------------------------------------- /* Looks for a word in a list of words - for ParseStatus */ -bool debListParser::GrabWord(string Word,WordList *List,int Count, - unsigned char &Out) +bool debListParser::GrabWord(string Word,WordList *List,unsigned char &Out) { - for (int C = 0; C != Count; C++) + for (unsigned int C = 0; List[C].Str != 0; C++) { if (strcasecmp(Word.c_str(),List[C].Str) == 0) { @@ -247,9 +848,127 @@ bool debListParser::GrabWord(string Word,WordList *List,int Count, /*}}}*/ // ListParser::Step - Move to the next section in the file /*{{{*/ // --------------------------------------------------------------------- -/* */ +/* This has to be careful to only process the correct architecture */ bool debListParser::Step() { - return Tags.Step(Section); + iOffset = Tags.Offset(); + while (Tags.Step(Section) == true) + { + /* See if this is the correct Architecture, if it isn't then we + drop the whole section. A missing arch tag only happens (in theory) + inside the Status file, so that is a positive return */ + string const Architecture = Section.FindS("Architecture"); + + if (Arch.empty() == true || Arch == "any" || MultiArchEnabled == false) + { + if (APT::Configuration::checkArchitecture(Architecture) == true) + return true; + /* parse version stanzas without an architecture only in the status file + (and as misfortune bycatch flat-archives) */ + if ((Arch.empty() == true || Arch == "any") && Architecture.empty() == true) + return true; + } + else + { + if (Architecture == Arch) + return true; + + if (Architecture == "all" && Arch == _config->Find("APT::Architecture")) + return true; + } + + iOffset = Tags.Offset(); + } + return false; +} + /*}}}*/ +// ListParser::LoadReleaseInfo - Load the release information /*{{{*/ +// --------------------------------------------------------------------- +/* */ +bool debListParser::LoadReleaseInfo(pkgCache::PkgFileIterator &FileI, + FileFd &File, string component) +{ + // apt-secure does no longer download individual (per-section) Release + // file. to provide Component pinning we use the section name now + map_stringitem_t const storage = WriteUniqString(component); + FileI->Component = storage; + + pkgTagFile TagFile(&File, File.Size()); + pkgTagSection Section; + if (_error->PendingError() == true || TagFile.Step(Section) == false) + return false; + + std::string data; + #define APT_INRELEASE(TAG, STORE) \ + data = Section.FindS(TAG); \ + if (data.empty() == false) \ + { \ + map_stringitem_t const storage = WriteUniqString(data); \ + STORE = storage; \ + } + APT_INRELEASE("Suite", FileI->Archive) + APT_INRELEASE("Component", FileI->Component) + APT_INRELEASE("Version", FileI->Version) + APT_INRELEASE("Origin", FileI->Origin) + APT_INRELEASE("Codename", FileI->Codename) + APT_INRELEASE("Label", FileI->Label) + #undef APT_INRELEASE + Section.FindFlag("NotAutomatic", FileI->Flags, pkgCache::Flag::NotAutomatic); + Section.FindFlag("ButAutomaticUpgrades", FileI->Flags, pkgCache::Flag::ButAutomaticUpgrades); + + return !_error->PendingError(); } /*}}}*/ +// ListParser::GetPrio - Convert the priority from a string /*{{{*/ +// --------------------------------------------------------------------- +/* */ +unsigned char debListParser::GetPrio(string Str) +{ + unsigned char Out; + if (GrabWord(Str,PrioList,Out) == false) + Out = pkgCache::State::Extra; + + return Out; +} + /*}}}*/ +#if (APT_PKG_MAJOR >= 4 && APT_PKG_MINOR >= 13) +bool debListParser::SameVersion(unsigned short const Hash, /*{{{*/ + pkgCache::VerIterator const &Ver) +{ + if (pkgCacheGenerator::ListParser::SameVersion(Hash, Ver) == false) + return false; + // status file has no (Download)Size, but all others are fair game + // status file is parsed last, so the first version we encounter is + // probably also the version we have downloaded + unsigned long long const Size = Section.FindULL("Size"); + if (Size != 0 && Size != Ver->Size) + return false; + // available everywhere, but easier to check here than to include in VersionHash + unsigned char MultiArch = ParseMultiArch(false); + if (MultiArch != Ver->MultiArch) + return false; + // for all practical proposes (we can check): same version + return true; +} + /*}}}*/ +#endif + + +debDebFileParser::debDebFileParser(FileFd *File, std::string const &DebFile) + : debListParser(File, ""), DebFile(DebFile) +{ +} + +bool debDebFileParser::UsePackage(pkgCache::PkgIterator &Pkg, + pkgCache::VerIterator &Ver) +{ + bool res = debListParser::UsePackage(Pkg, Ver); + // we use the full file path as a provides so that the file is found + // by its name + if(NewProvidesAllArch(Ver, DebFile, Ver.VerStr()) == false) + return false; + return res; +} + + +