X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/a1e68c33ac15be454984b00d62c7fc331bd0b32b..60cb4b09173ef64528dfbe92f016240c6fec3605:/apt-pkg/deb/deblistparser.cc diff --git a/apt-pkg/deb/deblistparser.cc b/apt-pkg/deb/deblistparser.cc index a36857cb5..e93e51af3 100644 --- a/apt-pkg/deb/deblistparser.cc +++ b/apt-pkg/deb/deblistparser.cc @@ -15,6 +15,7 @@ #include #include #include +#include #include #include #include @@ -22,7 +23,6 @@ #include #include -#include #include /*}}}*/ @@ -215,15 +215,22 @@ string debListParser::DescriptionLanguage() */ MD5SumValue debListParser::Description_md5() { - string value = Section.FindS("Description-md5"); - - if (value.empty()) + string const value = Section.FindS("Description-md5"); + if (value.empty() == true) { MD5Summation md5; md5.Add((Description() + "\n").c_str()); return md5.Result(); - } else - return MD5SumValue(value); + } + 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 /*{{{*/ @@ -236,21 +243,26 @@ bool debListParser::UsePackage(pkgCache::PkgIterator &Pkg, if (Pkg->Section == 0) Pkg->Section = UniqFindTagWrite("Section"); - // Packages which are not from the "native" arch doesn't get the essential flag - // in the default "native" mode - it is also possible to mark "all" or "none". - // The "installed" mode is handled by ParseStatus(), See #544481 and friends. string const static myArch = _config->Find("APT::Architecture"); - string const static essential = _config->Find("pkgCacheGen::Essential", "native"); - if ((essential == "native" && Pkg->Arch != 0 && myArch == Pkg.Arch()) || - essential == "all") + // 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 (Section.FindFlag("Important",Pkg->Flags,pkgCache::Flag::Important) == false) return false; if (strcmp(Pkg.Name(),"apt") == 0) - Pkg->Flags |= pkgCache::Flag::Important; - + { + 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; @@ -452,22 +464,6 @@ const char *debListParser::ConvertRelation(const char *I,unsigned int &Op) } return I; } - -/* - * CompleteArch: - * - * The complete architecture, consisting of -. - */ -static string CompleteArch(std::string const &arch) { - if (arch == "armel") return "linux-arm"; - if (arch == "armhf") return "linux-arm"; - if (arch == "lpia") return "linux-i386"; - if (arch == "powerpcspe") return "linux-powerpc"; - if (arch == "uclibc-linux-armel") return "linux-arm"; - if (arch == "uclinux-armel") return "uclinux-arm"; - - return (arch.find("-") != string::npos) ? arch : "linux-" + arch; -} /*}}}*/ // ListParser::ParseDepends - Parse a dependency element /*{{{*/ // --------------------------------------------------------------------- @@ -522,9 +518,9 @@ const char *debListParser::ParseDepends(const char *Start,const char *Stop, // Skip whitespace for (;I != Stop && isspace(*I) != 0; I++); Start = I; - for (;I != Stop && *I != ')'; I++); - if (I == Stop || Start == I) - return 0; + I = (const char*) memchr(I, ')', Stop - I); + if (I == NULL || Start == I) + return 0; // Skip trailing whitespace const char *End = I; @@ -544,58 +540,59 @@ const char *debListParser::ParseDepends(const char *Start,const char *Stop, if (ParseArchFlags == true) { - string completeArch = CompleteArch(arch); + APT::CacheFilter::PackageArchitectureMatchesSpecification matchesArch(arch, false); // Parse an architecture if (I != Stop && *I == '[') { + ++I; // malformed - I++; - if (I == Stop) - return 0; - - const char *End = I; - bool Found = false; - bool NegArch = false; - while (I != Stop) + if (unlikely(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) + // look for whitespace or ending ']' + for (;End != Stop && !isspace(*End) && *End != ']'; ++End); + + if (unlikely(End == Stop)) return 0; if (*I == '!') - { + { NegArch = true; - I++; - } + ++I; + } - if (stringcmp(arch,I,End) == 0) { + std::string arch(I, End); + if (arch.empty() == false && matchesArch(arch.c_str()) == true) + { Found = true; - } else { - std::string wildcard = SubstVar(string(I, End), "any", "*"); - if (fnmatch(wildcard.c_str(), completeArch.c_str(), 0) == 0) - 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) + if (NegArch == true) Found = !Found; - - if (Found == false) + + if (Found == false) Package = ""; /* not for this arch */ } - + // Skip whitespace for (;I != Stop && isspace(*I) != 0; I++); } @@ -625,16 +622,18 @@ bool debListParser::ParseDepends(pkgCache::VerIterator &Ver, if (Section.Find(Tag,Start,Stop) == false) return true; - string Package; string const pkgArch = Ver.Arch(); - string Version; - unsigned int Op; while (1) { + string Package; + string Version; + unsigned int Op; + Start = ParseDepends(Start,Stop,Package,Version,Op,false,!MultiArchEnabled); if (Start == 0) return _error->Error("Problem parsing dependency %s",Tag); + size_t const found = Package.rfind(':'); if (MultiArchEnabled == true && (Type == pkgCache::Dep::Conflicts || @@ -646,6 +645,18 @@ bool debListParser::ParseDepends(pkgCache::VerIterator &Ver, if (NewDepends(Ver,Package,*a,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 (Start == Stop) @@ -675,6 +686,9 @@ bool debListParser::ParseProvides(pkgCache::VerIterator &Ver) 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; @@ -768,8 +782,10 @@ bool debListParser::LoadReleaseInfo(pkgCache::PkgFileIterator &FileI, { // 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); + map_ptrloc const storage = WriteUniqString(component); + FileI->Component = storage; + // FIXME: Code depends on the fact that Release files aren't compressed FILE* release = fdopen(dup(File.Fd()), "r"); if (release == NULL) return false; @@ -797,21 +813,16 @@ bool debListParser::LoadReleaseInfo(pkgCache::PkgFileIterator &FileI, } // seperate the tag from the data - for (; buffer[len] != ':' && buffer[len] != '\0'; ++len) - /* nothing */ - ; - if (buffer[len] == '\0') + const char* dataStart = strchr(buffer + len, ':'); + if (dataStart == NULL) continue; - char* dataStart = buffer + len; + len = dataStart - buffer; for (++dataStart; *dataStart == ' '; ++dataStart) /* nothing */ ; - char* dataEnd = dataStart; - for (++dataEnd; *dataEnd != '\0'; ++dataEnd) - /* nothing */ - ; + const char* dataEnd = (const char*)rawmemchr(dataStart, '\0'); // The last char should be a newline, but we can never be sure: #633350 - char* lineEnd = dataEnd; + const char* lineEnd = dataEnd; for (--lineEnd; *lineEnd == '\r' || *lineEnd == '\n'; --lineEnd) /* nothing */ ; @@ -859,13 +870,14 @@ bool debListParser::LoadReleaseInfo(pkgCache::PkgFileIterator &FileI, break; *s = '\0'; } + map_ptrloc const storage = WriteUniqString(data); switch (writeTo) { - case Suite: FileI->Archive = WriteUniqString(data); break; - case Component: FileI->Component = WriteUniqString(data); break; - case Version: FileI->Version = WriteUniqString(data); break; - case Origin: FileI->Origin = WriteUniqString(data); break; - case Codename: FileI->Codename = WriteUniqString(data); break; - case Label: FileI->Label = WriteUniqString(data); break; + case Suite: FileI->Archive = storage; break; + case Component: FileI->Component = storage; break; + case Version: FileI->Version = storage; break; + case Origin: FileI->Origin = storage; break; + case Codename: FileI->Codename = storage; break; + case Label: FileI->Label = storage; break; case None: break; } }