X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/0149949bce07d3a15cb8a197df1240d56f7bcd26..59e4486eb632f4e56eb336fe5a7dc694059e741c:/apt-pkg/deb/deblistparser.cc diff --git a/apt-pkg/deb/deblistparser.cc b/apt-pkg/deb/deblistparser.cc index 97ee88183..c2b26b5eb 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 1.2 1998/07/04 22:32:17 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. @@ -10,52 +10,31 @@ ##################################################################### */ /*}}}*/ // Include Files /*{{{*/ -#include -#include +#include +#include +#include +#include +#include +#include + +#include + #include /*}}}*/ +static debListParser::WordList PrioList[] = {{"important",pkgCache::State::Important}, + {"required",pkgCache::State::Required}, + {"standard",pkgCache::State::Standard}, + {"optional",pkgCache::State::Optional}, + {"extra",pkgCache::State::Extra}, + {}}; + // ListParser::debListParser - Constructor /*{{{*/ // --------------------------------------------------------------------- /* */ -debListParser::debListParser(File &File) : Tags(File) -{ -} - /*}}}*/ -// ListParser::FindTag - Find the tag and return a string /*{{{*/ -// --------------------------------------------------------------------- -/* */ -string debListParser::FindTag(const char *Tag) +debListParser::debListParser(FileFd *File) : Tags(File) { - const char *Start; - const char *Stop; - if (Section.Find(Tag,Start,Stop) == false) - return string(); - return string(Start,Stop - Start); -} - /*}}}*/ -// ListParser::FindTagI - Find the tag and return an int /*{{{*/ -// --------------------------------------------------------------------- -/* */ -signed long debListParser::FindTagI(const char *Tag,signed long Default) -{ - const char *Start; - const char *Stop; - if (Section.Find(Tag,Start,Stop) == false) - return Default; - - // Copy it into a temp buffer so we can use strtol - char S[300]; - if ((unsigned)(Stop - Start) >= sizeof(S)) - return Default; - strncpy(S,Start,Stop-Start); - S[Stop - Start] = 0; - - char *End; - signed long Result = strtol(S,&End,10); - if (S == End) - return Default; - return Result; + Arch = _config->Find("APT::architecture"); } /*}}}*/ // ListParser::UniqFindTagWrite - Find the tag and write a unq string /*{{{*/ @@ -70,47 +49,14 @@ 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"); + string Result = Section.FindS("Package"); if (Result.empty() == true) - _error->Error("Encoutered a section with no Package: header"); + _error->Error("Encountered a section with no Package: header"); return Result; } /*}}}*/ @@ -121,17 +67,7 @@ string debListParser::Package() entry is assumed to only describe package properties */ string debListParser::Version() { - return FindTag("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) -{ - // Debian doesnt have anything, everything is condionally megered - return true; + return Section.FindS("Version"); } /*}}}*/ // ListParser::NewVersion - Fill in the version structure /*{{{*/ @@ -140,36 +76,90 @@ bool debListParser::NewPackage(pkgCache::PkgIterator Pkg) bool debListParser::NewVersion(pkgCache::VerIterator Ver) { // Parse the section - if ((Ver->Section = UniqFindTagWrite("Section")) == 0) - return _error->Warning("Missing Section tag"); + Ver->Section = UniqFindTagWrite("Section"); + Ver->Arch = UniqFindTagWrite("Architecture"); // Archive Size - if ((Ver->Size = (unsigned)FindTagI("Size")) == 0) - return _error->Error("Unparsable Size field"); + Ver->Size = (unsigned)Section.FindI("Size"); // Unpacked Size (in K) - if ((Ver->InstalledSize = (unsigned)FindTagI("Installed-Size")) == 0) - return _error->Error("Unparsable Installed-Size field"); + Ver->InstalledSize = (unsigned)Section.FindI("Installed-Size"); Ver->InstalledSize *= 1024; // Priority const char *Start; const char *Stop; if (Section.Find("Priority",Start,Stop) == true) - { - WordList PrioList[] = {{"important",pkgCache::Important}, - {"required",pkgCache::Required}, - {"standard",pkgCache::Standard}, - {"optional",pkgCache::Optional}, - {"extra",pkgCache::Extra}}; - if (GrabWord(string(Start,Stop-Start),PrioList, - _count(PrioList),Ver->Priority) == false) - return _error->Error("Malformed Priority line"); + { + 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,"Replaces",pkgCache::Dep::Replaces) == 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() +{ + if (DescriptionLanguage().empty()) + return Section.FindS("Description"); + else + return Section.FindS(("Description-" + pkgIndexFile::LanguageCode()).c_str()); +} + /*}}}*/ +// ListParser::DescriptionLanguage - Return the description lang string /*{{{*/ +// --------------------------------------------------------------------- +/* This is to return the string describing the language of + description. If this returns the blank string then the entry is + assumed to describe original description. */ +string debListParser::DescriptionLanguage() +{ + return Section.FindS("Description").empty() ? pkgIndexFile::LanguageCode() : ""; +} + /*}}}*/ +// ListParser::Description - 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 value = Section.FindS("Description-md5"); + + if (value.empty()) + { + MD5Summation md5; + md5.Add((Description() + "\n").c_str()); + return md5.Result(); + } else + return MD5SumValue(value); +} + /*}}}*/ // ListParser::UsePackage - Update a package structure /*{{{*/ // --------------------------------------------------------------------- /* This is called to update the package with any new information @@ -178,24 +168,68 @@ bool debListParser::UsePackage(pkgCache::PkgIterator Pkg, pkgCache::VerIterator Ver) { if (Pkg->Section == 0) - if ((Pkg->Section = UniqFindTagWrite("Section")) == 0) - return false; - if (HandleFlag("Essential",Pkg->Flags,pkgCache::Essential) == false) + Pkg->Section = UniqFindTagWrite("Section"); + if (Section.FindFlag("Essential",Pkg->Flags,pkgCache::Flag::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) + 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", + "Replaces",0}; + unsigned long Result = INIT_FCS; + char S[1024]; + for (const char **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 *I = S; + for (; Start != End; Start++) + { + if (isspace(*Start) == 0) + *I++ = tolower(*Start); + if (*Start == '<' && Start[1] != '<' && Start[1] != '=') + *I++ = '='; + if (*Start == '>' && Start[1] != '>' && Start[1] != '=') + *I++ = '='; + } + + Result = AddCRC16(Result,S,I - 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 @@ -217,13 +251,13 @@ 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}, + {}}; + if (GrabWord(string(Start,I-Start),WantList,Pkg->SelectedState) == false) return _error->Error("Malformed 1st word in the Status line"); // Isloate the next word @@ -234,12 +268,12 @@ 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}, + {}}; + if (GrabWord(string(Start,I-Start),FlagList,Pkg->InstState) == false) return _error->Error("Malformed 2nd word in the Status line"); // Isloate the last word @@ -250,25 +284,24 @@ 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}, + {"post-inst-failed",pkgCache::State::HalfConfigured}, + {"removal-failed",pkgCache::State::HalfInstalled}, + {}}; + 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"); @@ -276,16 +309,264 @@ 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, + string &Package,string &Ver, + unsigned int &Op, bool ParseArchFlags) +{ + // 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++); + + // Malformed, no '(' + if (I != Stop && *I == ')') + return 0; + + if (I == Start) + return 0; + + // Stash the package name + Package.assign(Start,I - Start); + + // 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; + for (;I != Stop && *I != ')'; I++); + if (I == Stop || 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) + { + string arch = _config->Find("APT::Architecture"); + + // Parse an architecture + if (I != Stop && *I == '[') + { + // malformed + I++; + if (I == Stop) + return 0; + + const char *End = I; + bool Found = false; + bool NegArch = false; + while (I != Stop) + { + // look for whitespace or ending ']' + while (End != Stop && !isspace(*End) && *End != ']') + End++; + + if (End == Stop) + return 0; + + if (*I == '!') + { + NegArch = true; + I++; + } + + if (stringcmp(arch,I,End) == 0) + Found = true; + + if (*End++ == ']') { + I = End; + break; + } + + I = End; + for (;I != Stop && isspace(*I) != 0; I++); + } + + if (NegArch) + Found = !Found; + + if (Found == false) + Package = ""; /* not for this arch */ + } + + // 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 Package; + string Version; + unsigned int Op; + + while (1) + { + Start = ParseDepends(Start,Stop,Package,Version,Op); + if (Start == 0) + return _error->Error("Problem parsing dependency %s",Tag); + + if (NewDepends(Ver,Package,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) == false) + return true; + + string Package; + string Version; + 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 (NewProvides(Ver,Package,Version) == false) + return false; + } + + if (Start == Stop) + break; + } + 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) { @@ -301,23 +582,77 @@ bool debListParser::GrabWord(string Word,WordList *List,int Count, /* This has to be carefull to only process the correct architecture */ bool debListParser::Step() { + iOffset = Tags.Offset(); while (Tags.Step(Section) == true) - { - /* See if this is the correct Architecture, if it isnt then we - drop the whole section */ + { + /* 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 */ const char *Start; const char *Stop; if (Section.Find("Architecture",Start,Stop) == false) return true; - - if (strncmp(Start,"i386",Stop - Start) == 0 && - strlen("i386") == (unsigned)(Stop - Start)) + + if (stringcmp(Arch,Start,Stop) == 0) return true; - if (strncmp(Start,"all",Stop - Start) == 0 && - 3 == (unsigned)(Stop - Start)) + if (stringcmp(Start,Stop,"all") == 0) return true; + + iOffset = Tags.Offset(); } return false; } /*}}}*/ +// ListParser::LoadReleaseInfo - Load the release information /*{{{*/ +// --------------------------------------------------------------------- +/* */ +bool debListParser::LoadReleaseInfo(pkgCache::PkgFileIterator FileI, + FileFd &File, string component) +{ + pkgTagFile Tags(&File, File.Size() + 256); // XXX + pkgTagSection Section; + if (Tags.Step(Section) == false) + return false; + + //mvo: I don't think we need to fill that in (it's unused since apt-0.6) + //FileI->Architecture = WriteUniqString(Arch); + + // apt-secure does no longer download individual (per-section) Release + // file. to provide Component pinning we use the section name now + FileI->Component = WriteUniqString(component); + + const char *Start; + const char *Stop; + if (Section.Find("Suite",Start,Stop) == true) + FileI->Archive = WriteUniqString(Start,Stop - Start); + if (Section.Find("Component",Start,Stop) == true) + FileI->Component = WriteUniqString(Start,Stop - Start); + if (Section.Find("Version",Start,Stop) == true) + FileI->Version = WriteUniqString(Start,Stop - Start); + if (Section.Find("Origin",Start,Stop) == true) + FileI->Origin = WriteUniqString(Start,Stop - Start); + if (Section.Find("Label",Start,Stop) == true) + FileI->Label = WriteUniqString(Start,Stop - Start); + if (Section.Find("Architecture",Start,Stop) == true) + FileI->Architecture = WriteUniqString(Start,Stop - Start); + + if (Section.FindFlag("NotAutomatic",FileI->Flags, + pkgCache::Flag::NotAutomatic) == false) + _error->Warning("Bad NotAutomatic flag"); + + 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; +} + /*}}}*/